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authorblogic <blogic@3c298f89-4303-0410-b956-a3cf2f4a3e73>2012-10-05 10:12:53 +0000
committerblogic <blogic@3c298f89-4303-0410-b956-a3cf2f4a3e73>2012-10-05 10:12:53 +0000
commit5c105d9f3fd086aff195d3849dcf847d6b0bd927 (patch)
tree1229a11f725bfa58aa7c57a76898553bb5f6654a /target/linux/brcm2708/patches-3.3/0005-bcm2708-vchiq-driver.patch
downloadopenwrt-5c105d9f3fd086aff195d3849dcf847d6b0bd927.tar.gz
openwrt-5c105d9f3fd086aff195d3849dcf847d6b0bd927.zip
branch Attitude Adjustment
git-svn-id: svn://svn.openwrt.org/openwrt/branches/attitude_adjustment@33625 3c298f89-4303-0410-b956-a3cf2f4a3e73
Diffstat (limited to 'target/linux/brcm2708/patches-3.3/0005-bcm2708-vchiq-driver.patch')
-rw-r--r--target/linux/brcm2708/patches-3.3/0005-bcm2708-vchiq-driver.patch16383
1 files changed, 16383 insertions, 0 deletions
diff --git a/target/linux/brcm2708/patches-3.3/0005-bcm2708-vchiq-driver.patch b/target/linux/brcm2708/patches-3.3/0005-bcm2708-vchiq-driver.patch
new file mode 100644
index 000000000..47c6d8e87
--- /dev/null
+++ b/target/linux/brcm2708/patches-3.3/0005-bcm2708-vchiq-driver.patch
@@ -0,0 +1,16383 @@
+From a2e42fbc97cde9e851f5b036f46b8f34a5be6eb9 Mon Sep 17 00:00:00 2001
+From: popcornmix <popcornmix@gmail.com>
+Date: Tue, 17 Jan 2012 19:22:19 +0000
+Subject: [PATCH 5/7] bcm2708 vchiq driver
+
+Signed-off-by: popcornmix <popcornmix@gmail.com>
+---
+ drivers/misc/Kconfig | 1 +
+ drivers/misc/Makefile | 1 +
+ drivers/misc/vc04_services/Kconfig | 7 +
+ drivers/misc/vc04_services/Makefile | 19 +
+ .../misc/vc04_services/interface/vchi/vchi_mh.h | 19 +
+ .../misc/vc04_services/interface/vchiq_arm/vchiq.h | 27 +
+ .../vc04_services/interface/vchiq_arm/vchiq_2835.h | 27 +
+ .../interface/vchiq_arm/vchiq_2835_arm.c | 487 ++++
+ .../vc04_services/interface/vchiq_arm/vchiq_arm.c | 1293 ++++++++++
+ .../vc04_services/interface/vchiq_arm/vchiq_arm.h | 38 +
+ .../vc04_services/interface/vchiq_arm/vchiq_cfg.h | 43 +
+ .../interface/vchiq_arm/vchiq_connected.c | 101 +
+ .../interface/vchiq_arm/vchiq_connected.h | 32 +
+ .../vc04_services/interface/vchiq_arm/vchiq_core.c | 2604 ++++++++++++++++++++
+ .../vc04_services/interface/vchiq_arm/vchiq_core.h | 480 ++++
+ .../vc04_services/interface/vchiq_arm/vchiq_if.h | 148 ++
+ .../interface/vchiq_arm/vchiq_ioctl.h | 105 +
+ .../interface/vchiq_arm/vchiq_kern_lib.c | 297 +++
+ .../vc04_services/interface/vchiq_arm/vchiq_lib.c | 1518 ++++++++++++
+ .../interface/vchiq_arm/vchiq_memdrv.h | 45 +
+ .../interface/vchiq_arm/vchiq_pagelist.h | 43 +
+ .../vc04_services/interface/vchiq_arm/vchiq_shim.c | 970 ++++++++
+ .../vc04_services/interface/vchiq_arm/vchiq_util.c | 97 +
+ .../vc04_services/interface/vchiq_arm/vchiq_util.h | 47 +
+ .../interface/vcos/generic/vcos_cmd.c | 681 +++++
+ .../interface/vcos/generic/vcos_common.h | 76 +
+ .../vcos/generic/vcos_generic_blockpool.h | 260 ++
+ .../vcos/generic/vcos_generic_event_flags.c | 297 +++
+ .../vcos/generic/vcos_generic_event_flags.h | 104 +
+ .../vcos/generic/vcos_generic_named_sem.h | 81 +
+ .../vcos/generic/vcos_generic_quickslow_mutex.h | 75 +
+ .../vcos/generic/vcos_generic_reentrant_mtx.h | 75 +
+ .../interface/vcos/generic/vcos_generic_tls.h | 144 ++
+ .../vcos/generic/vcos_joinable_thread_from_plain.h | 202 ++
+ .../interface/vcos/generic/vcos_latch_from_sem.h | 48 +
+ .../interface/vcos/generic/vcos_logcat.c | 549 +++++
+ .../interface/vcos/generic/vcos_mem_from_malloc.c | 73 +
+ .../interface/vcos/generic/vcos_mem_from_malloc.h | 54 +
+ .../vcos/generic/vcos_mutexes_are_reentrant.h | 68 +
+ .../interface/vcos/generic/vcos_thread_reaper.h | 35 +
+ .../interface/vcos/linuxkernel/stdint.h | 17 +
+ .../interface/vcos/linuxkernel/vcos_linuxkernel.c | 616 +++++
+ .../vcos/linuxkernel/vcos_linuxkernel_cfg.c | 332 +++
+ .../vcos/linuxkernel/vcos_linuxkernel_misc.c | 113 +
+ .../interface/vcos/linuxkernel/vcos_mod_init.c | 64 +
+ .../interface/vcos/linuxkernel/vcos_platform.h | 496 ++++
+ .../vcos/linuxkernel/vcos_platform_types.h | 47 +
+ .../interface/vcos/linuxkernel/vcos_thread_map.c | 129 +
+ .../interface/vcos/linuxkernel/vcos_thread_map.h | 39 +
+ drivers/misc/vc04_services/interface/vcos/vcos.h | 201 ++
+ .../vc04_services/interface/vcos/vcos_assert.h | 269 ++
+ .../interface/vcos/vcos_atomic_flags.h | 72 +
+ .../vc04_services/interface/vcos/vcos_build_info.h | 5 +
+ .../misc/vc04_services/interface/vcos/vcos_cfg.h | 113 +
+ .../misc/vc04_services/interface/vcos/vcos_cmd.h | 98 +
+ .../misc/vc04_services/interface/vcos/vcos_ctype.h | 29 +
+ .../misc/vc04_services/interface/vcos/vcos_dlfcn.h | 69 +
+ .../misc/vc04_services/interface/vcos/vcos_event.h | 97 +
+ .../interface/vcos/vcos_event_flags.h | 98 +
+ .../misc/vc04_services/interface/vcos/vcos_init.h | 43 +
+ .../vc04_services/interface/vcos/vcos_logging.h | 279 +++
+ .../interface/vcos/vcos_lowlevel_thread.h | 107 +
+ .../misc/vc04_services/interface/vcos/vcos_mem.h | 81 +
+ .../vc04_services/interface/vcos/vcos_msgqueue.h | 157 ++
+ .../misc/vc04_services/interface/vcos/vcos_mutex.h | 92 +
+ .../misc/vc04_services/interface/vcos/vcos_once.h | 42 +
+ .../vc04_services/interface/vcos/vcos_semaphore.h | 115 +
+ .../vc04_services/interface/vcos/vcos_stdbool.h | 17 +
+ .../vc04_services/interface/vcos/vcos_stdint.h | 193 ++
+ .../vc04_services/interface/vcos/vcos_string.h | 73 +
+ .../vc04_services/interface/vcos/vcos_thread.h | 259 ++
+ .../interface/vcos/vcos_thread_attr.h | 73 +
+ .../misc/vc04_services/interface/vcos/vcos_timer.h | 95 +
+ .../misc/vc04_services/interface/vcos/vcos_types.h | 197 ++
+ 74 files changed, 15998 insertions(+), 0 deletions(-)
+ create mode 100644 drivers/misc/vc04_services/Kconfig
+ create mode 100644 drivers/misc/vc04_services/Makefile
+ create mode 100644 drivers/misc/vc04_services/interface/vchi/vchi_mh.h
+ create mode 100644 drivers/misc/vc04_services/interface/vchiq_arm/vchiq.h
+ create mode 100644 drivers/misc/vc04_services/interface/vchiq_arm/vchiq_2835.h
+ create mode 100644 drivers/misc/vc04_services/interface/vchiq_arm/vchiq_2835_arm.c
+ create mode 100644 drivers/misc/vc04_services/interface/vchiq_arm/vchiq_arm.c
+ create mode 100644 drivers/misc/vc04_services/interface/vchiq_arm/vchiq_arm.h
+ create mode 100644 drivers/misc/vc04_services/interface/vchiq_arm/vchiq_cfg.h
+ create mode 100644 drivers/misc/vc04_services/interface/vchiq_arm/vchiq_connected.c
+ create mode 100644 drivers/misc/vc04_services/interface/vchiq_arm/vchiq_connected.h
+ create mode 100644 drivers/misc/vc04_services/interface/vchiq_arm/vchiq_core.c
+ create mode 100644 drivers/misc/vc04_services/interface/vchiq_arm/vchiq_core.h
+ create mode 100644 drivers/misc/vc04_services/interface/vchiq_arm/vchiq_if.h
+ create mode 100644 drivers/misc/vc04_services/interface/vchiq_arm/vchiq_ioctl.h
+ create mode 100644 drivers/misc/vc04_services/interface/vchiq_arm/vchiq_kern_lib.c
+ create mode 100644 drivers/misc/vc04_services/interface/vchiq_arm/vchiq_lib.c
+ create mode 100644 drivers/misc/vc04_services/interface/vchiq_arm/vchiq_memdrv.h
+ create mode 100644 drivers/misc/vc04_services/interface/vchiq_arm/vchiq_pagelist.h
+ create mode 100644 drivers/misc/vc04_services/interface/vchiq_arm/vchiq_shim.c
+ create mode 100644 drivers/misc/vc04_services/interface/vchiq_arm/vchiq_util.c
+ create mode 100644 drivers/misc/vc04_services/interface/vchiq_arm/vchiq_util.h
+ create mode 100644 drivers/misc/vc04_services/interface/vcos/generic/vcos_cmd.c
+ create mode 100644 drivers/misc/vc04_services/interface/vcos/generic/vcos_common.h
+ create mode 100644 drivers/misc/vc04_services/interface/vcos/generic/vcos_generic_blockpool.h
+ create mode 100644 drivers/misc/vc04_services/interface/vcos/generic/vcos_generic_event_flags.c
+ create mode 100644 drivers/misc/vc04_services/interface/vcos/generic/vcos_generic_event_flags.h
+ create mode 100644 drivers/misc/vc04_services/interface/vcos/generic/vcos_generic_named_sem.h
+ create mode 100644 drivers/misc/vc04_services/interface/vcos/generic/vcos_generic_quickslow_mutex.h
+ create mode 100644 drivers/misc/vc04_services/interface/vcos/generic/vcos_generic_reentrant_mtx.h
+ create mode 100644 drivers/misc/vc04_services/interface/vcos/generic/vcos_generic_tls.h
+ create mode 100644 drivers/misc/vc04_services/interface/vcos/generic/vcos_joinable_thread_from_plain.h
+ create mode 100644 drivers/misc/vc04_services/interface/vcos/generic/vcos_latch_from_sem.h
+ create mode 100644 drivers/misc/vc04_services/interface/vcos/generic/vcos_logcat.c
+ create mode 100644 drivers/misc/vc04_services/interface/vcos/generic/vcos_mem_from_malloc.c
+ create mode 100644 drivers/misc/vc04_services/interface/vcos/generic/vcos_mem_from_malloc.h
+ create mode 100644 drivers/misc/vc04_services/interface/vcos/generic/vcos_mutexes_are_reentrant.h
+ create mode 100644 drivers/misc/vc04_services/interface/vcos/generic/vcos_thread_reaper.h
+ create mode 100644 drivers/misc/vc04_services/interface/vcos/linuxkernel/stdint.h
+ create mode 100644 drivers/misc/vc04_services/interface/vcos/linuxkernel/vcos_linuxkernel.c
+ create mode 100644 drivers/misc/vc04_services/interface/vcos/linuxkernel/vcos_linuxkernel_cfg.c
+ create mode 100644 drivers/misc/vc04_services/interface/vcos/linuxkernel/vcos_linuxkernel_misc.c
+ create mode 100644 drivers/misc/vc04_services/interface/vcos/linuxkernel/vcos_mod_init.c
+ create mode 100644 drivers/misc/vc04_services/interface/vcos/linuxkernel/vcos_platform.h
+ create mode 100644 drivers/misc/vc04_services/interface/vcos/linuxkernel/vcos_platform_types.h
+ create mode 100644 drivers/misc/vc04_services/interface/vcos/linuxkernel/vcos_thread_map.c
+ create mode 100644 drivers/misc/vc04_services/interface/vcos/linuxkernel/vcos_thread_map.h
+ create mode 100644 drivers/misc/vc04_services/interface/vcos/vcos.h
+ create mode 100644 drivers/misc/vc04_services/interface/vcos/vcos_assert.h
+ create mode 100644 drivers/misc/vc04_services/interface/vcos/vcos_atomic_flags.h
+ create mode 100644 drivers/misc/vc04_services/interface/vcos/vcos_build_info.h
+ create mode 100644 drivers/misc/vc04_services/interface/vcos/vcos_cfg.h
+ create mode 100644 drivers/misc/vc04_services/interface/vcos/vcos_cmd.h
+ create mode 100644 drivers/misc/vc04_services/interface/vcos/vcos_ctype.h
+ create mode 100644 drivers/misc/vc04_services/interface/vcos/vcos_dlfcn.h
+ create mode 100644 drivers/misc/vc04_services/interface/vcos/vcos_event.h
+ create mode 100644 drivers/misc/vc04_services/interface/vcos/vcos_event_flags.h
+ create mode 100644 drivers/misc/vc04_services/interface/vcos/vcos_init.h
+ create mode 100644 drivers/misc/vc04_services/interface/vcos/vcos_logging.h
+ create mode 100644 drivers/misc/vc04_services/interface/vcos/vcos_lowlevel_thread.h
+ create mode 100644 drivers/misc/vc04_services/interface/vcos/vcos_mem.h
+ create mode 100644 drivers/misc/vc04_services/interface/vcos/vcos_msgqueue.h
+ create mode 100644 drivers/misc/vc04_services/interface/vcos/vcos_mutex.h
+ create mode 100644 drivers/misc/vc04_services/interface/vcos/vcos_once.h
+ create mode 100644 drivers/misc/vc04_services/interface/vcos/vcos_semaphore.h
+ create mode 100644 drivers/misc/vc04_services/interface/vcos/vcos_stdbool.h
+ create mode 100644 drivers/misc/vc04_services/interface/vcos/vcos_stdint.h
+ create mode 100644 drivers/misc/vc04_services/interface/vcos/vcos_string.h
+ create mode 100644 drivers/misc/vc04_services/interface/vcos/vcos_thread.h
+ create mode 100644 drivers/misc/vc04_services/interface/vcos/vcos_thread_attr.h
+ create mode 100644 drivers/misc/vc04_services/interface/vcos/vcos_timer.h
+ create mode 100644 drivers/misc/vc04_services/interface/vcos/vcos_types.h
+
+--- a/drivers/misc/Kconfig
++++ b/drivers/misc/Kconfig
+@@ -506,4 +506,5 @@ source "drivers/misc/ti-st/Kconfig"
+ source "drivers/misc/lis3lv02d/Kconfig"
+ source "drivers/misc/carma/Kconfig"
+ source "drivers/misc/altera-stapl/Kconfig"
++source "drivers/misc/vc04_services/Kconfig"
+ endmenu
+--- a/drivers/misc/Makefile
++++ b/drivers/misc/Makefile
+@@ -49,3 +49,5 @@ obj-y += carma/
+ obj-$(CONFIG_USB_SWITCH_FSA9480) += fsa9480.o
+ obj-$(CONFIG_ALTERA_STAPL) +=altera-stapl/
+ obj-$(CONFIG_MAX8997_MUIC) += max8997-muic.o
++obj-y += vc04_services/
++
+--- /dev/null
++++ b/drivers/misc/vc04_services/Kconfig
+@@ -0,0 +1,7 @@
++config BCM2708_VCHIQ
++ tristate "Videocore VCHIQ"
++ depends on MACH_BCM2708
++ default y
++ help
++ Helper for communication for VideoCore.
++
+--- /dev/null
++++ b/drivers/misc/vc04_services/Makefile
+@@ -0,0 +1,19 @@
++obj-$(CONFIG_BCM2708_VCHIQ) += vchiq.o
++
++vchiq-objs := \
++ interface/vchiq_arm/vchiq_core.o \
++ interface/vchiq_arm/vchiq_arm.o \
++ interface/vchiq_arm/vchiq_kern_lib.o \
++ interface/vchiq_arm/vchiq_2835_arm.o \
++ interface/vcos/linuxkernel/vcos_linuxkernel.o \
++ interface/vcos/linuxkernel/vcos_thread_map.o \
++ interface/vcos/linuxkernel/vcos_linuxkernel_cfg.o \
++ interface/vcos/generic/vcos_generic_event_flags.o \
++ interface/vcos/generic/vcos_logcat.o \
++ interface/vcos/generic/vcos_mem_from_malloc.o \
++ interface/vcos/generic/vcos_cmd.o
++
++EXTRA_CFLAGS += -DVCOS_VERIFY_BKPTS=1 -Idrivers/misc/vc04_services -Idrivers/misc/vc04_services/interface/vcos/linuxkernel
++
++
++
+--- /dev/null
++++ b/drivers/misc/vc04_services/interface/vchi/vchi_mh.h
+@@ -0,0 +1,19 @@
++/*=============================================================================
++Copyright (c) 2010 Broadcom Europe Limited. All rights reserved.
++
++Project : vchi
++Module : vchi
++
++FILE DESCRIPTION:
++Definitions for memory handle types.
++=============================================================================*/
++
++#ifndef VCHI_MH_H_
++#define VCHI_MH_H_
++
++#include <interface/vcos/vcos.h>
++
++typedef int32_t VCHI_MEM_HANDLE_T;
++#define VCHI_MEM_HANDLE_INVALID 0
++
++#endif
+--- /dev/null
++++ b/drivers/misc/vc04_services/interface/vchiq_arm/vchiq.h
+@@ -0,0 +1,27 @@
++/*
++ * Copyright (c) 2010-2011 Broadcom. All rights reserved.
++ *
++ * This program is free software; you can redistribute it and/or modify
++ * it under the terms of the GNU General Public License as published by
++ * the Free Software Foundation; either version 2 of the License, or
++ * (at your option) any later version.
++ *
++ * This program is distributed in the hope that it will be useful,
++ * but WITHOUT ANY WARRANTY; without even the implied warranty of
++ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
++ * GNU General Public License for more details.
++ *
++ * You should have received a copy of the GNU General Public License
++ * along with this program; if not, write to the Free Software
++ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
++ */
++
++#ifndef VCHIQ_VCHIQ_H
++#define VCHIQ_VCHIQ_H
++
++#include "vchiq_if.h"
++#include "vchiq_util.h"
++#include "interface/vcos/vcos.h"
++
++#endif
++
+--- /dev/null
++++ b/drivers/misc/vc04_services/interface/vchiq_arm/vchiq_2835.h
+@@ -0,0 +1,27 @@
++/*
++ * Copyright (c) 2010-2011 Broadcom Corporation. All rights reserved.
++ *
++ * This program is free software; you can redistribute it and/or modify
++ * it under the terms of the GNU General Public License as published by
++ * the Free Software Foundation; either version 2 of the License, or
++ * (at your option) any later version.
++ *
++ * This program is distributed in the hope that it will be useful,
++ * but WITHOUT ANY WARRANTY; without even the implied warranty of
++ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
++ * GNU General Public License for more details.
++ *
++ * You should have received a copy of the GNU General Public License
++ * along with this program; if not, write to the Free Software
++ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
++ */
++
++#ifndef VCHIQ_2835_H
++#define VCHIQ_2835_H
++
++#include "vchiq_pagelist.h"
++
++#define VCHIQ_PLATFORM_FRAGMENTS_OFFSET_IDX 0
++#define VCHIQ_PLATFORM_FRAGMENTS_COUNT_IDX 1
++
++#endif /* VCHIQ_2835_H */
+--- /dev/null
++++ b/drivers/misc/vc04_services/interface/vchiq_arm/vchiq_2835_arm.c
+@@ -0,0 +1,487 @@
++/*
++ * Copyright (c) 2010-2011 Broadcom Corporation. All rights reserved.
++ *
++ * This program is free software; you can redistribute it and/or modify
++ * it under the terms of the GNU General Public License as published by
++ * the Free Software Foundation; either version 2 of the License, or
++ * (at your option) any later version.
++ *
++ * This program is distributed in the hope that it will be useful,
++ * but WITHOUT ANY WARRANTY; without even the implied warranty of
++ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
++ * GNU General Public License for more details.
++ *
++ * You should have received a copy of the GNU General Public License
++ * along with this program; if not, write to the Free Software
++ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
++ */
++
++#include <linux/kernel.h>
++#include <linux/types.h>
++#include <linux/errno.h>
++#include <linux/interrupt.h>
++#include <linux/irq.h>
++#include <linux/pagemap.h>
++#include <linux/dma-mapping.h>
++#include <linux/version.h>
++#include <asm/pgtable.h>
++#include <asm/io.h>
++#include <asm/uaccess.h>
++
++#include <mach/irqs.h>
++
++#include <mach/platform.h>
++#include <mach/vcio.h>
++
++#define TOTAL_SLOTS (VCHIQ_SLOT_ZERO_SLOTS + 2 * 32)
++
++#define VCHIQ_DOORBELL_IRQ IRQ_ARM_DOORBELL_0
++#define VCHIQ_ARM_ADDRESS(x) __virt_to_bus(x)
++
++#include "vchiq_arm.h"
++#include "vchiq_2835.h"
++
++#define MAX_FRAGMENTS (VCHIQ_NUM_CURRENT_BULKS * 2)
++
++#define VCOS_LOG_CATEGORY (&vchiq_arm_log_category)
++
++static char *g_slot_mem;
++static int g_slot_mem_size;
++dma_addr_t g_slot_phys;
++static FRAGMENTS_T *g_fragments_base;
++static FRAGMENTS_T *g_free_fragments;
++struct semaphore g_free_fragments_sema;
++
++#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,36)
++static DEFINE_SEMAPHORE(g_free_fragments_mutex);
++#else
++static DECLARE_MUTEX(g_free_fragments_mutex);
++#endif
++
++static irqreturn_t
++vchiq_doorbell_irq(int irq, void *dev_id);
++
++static int
++create_pagelist(char __user *buf, size_t count, unsigned short type,
++ struct task_struct *task, PAGELIST_T ** ppagelist);
++
++static void
++free_pagelist(PAGELIST_T *pagelist, int actual);
++
++int __init
++vchiq_platform_vcos_init(void)
++{
++ return (vcos_init() == VCOS_SUCCESS) ? 0 : -EINVAL;
++}
++
++int __init
++vchiq_platform_init(VCHIQ_STATE_T *state)
++{
++ VCHIQ_SLOT_ZERO_T *vchiq_slot_zero;
++ int frag_mem_size;
++ int err;
++ int i;
++
++ /* Allocate space for the channels in coherent memory */
++ g_slot_mem_size = PAGE_ALIGN(TOTAL_SLOTS * VCHIQ_SLOT_SIZE);
++ frag_mem_size = PAGE_ALIGN(sizeof(FRAGMENTS_T) * MAX_FRAGMENTS);
++
++ g_slot_mem = dma_alloc_coherent(NULL, g_slot_mem_size + frag_mem_size,
++ &g_slot_phys, GFP_ATOMIC);
++
++ if (!g_slot_mem) {
++ vcos_log_error("Unable to allocate channel memory");
++ err = -ENOMEM;
++ goto failed_alloc;
++ }
++
++ vcos_assert(((int)g_slot_mem & (PAGE_SIZE - 1)) == 0);
++
++ vchiq_slot_zero = vchiq_init_slots(g_slot_mem, g_slot_mem_size);
++ if (!vchiq_slot_zero)
++ {
++ err = -EINVAL;
++ goto failed_init_slots;
++ }
++
++ vchiq_slot_zero->platform_data[VCHIQ_PLATFORM_FRAGMENTS_OFFSET_IDX] = (int)g_slot_phys + g_slot_mem_size;
++ vchiq_slot_zero->platform_data[VCHIQ_PLATFORM_FRAGMENTS_COUNT_IDX] = MAX_FRAGMENTS;
++
++ g_fragments_base = (FRAGMENTS_T *)(g_slot_mem + g_slot_mem_size);
++ g_slot_mem_size += frag_mem_size;
++
++ g_free_fragments = g_fragments_base;
++ for (i = 0; i < (MAX_FRAGMENTS - 1); i++) {
++ *(FRAGMENTS_T **) & g_fragments_base[i] =
++ &g_fragments_base[i + 1];
++ }
++ *(FRAGMENTS_T **) & g_fragments_base[i] = NULL;
++ sema_init(&g_free_fragments_sema, MAX_FRAGMENTS);
++
++ if (vchiq_init_state(state, vchiq_slot_zero, 0/*slave*/) !=
++ VCHIQ_SUCCESS)
++ {
++ err = -EINVAL;
++ goto failed_vchiq_init;
++ }
++
++ err = request_irq(VCHIQ_DOORBELL_IRQ, vchiq_doorbell_irq,
++ IRQF_IRQPOLL, "VCHIQ doorbell",
++ state);
++ if (err < 0)
++ {
++ printk( KERN_ERR "%s: failed to register irq=%d err=%d\n", __func__,
++ VCHIQ_DOORBELL_IRQ, err );
++ goto failed_request_irq;
++ }
++
++ /* Send the base address of the slots to VideoCore */
++
++ dsb(); /* Ensure all writes have completed */
++
++ bcm_mailbox_write(MBOX_CHAN_VCHIQ, (unsigned int)g_slot_phys);
++
++ vcos_log_info("vchiq_init - done (slots %x, phys %x)",
++ (unsigned int)vchiq_slot_zero, g_slot_phys);
++
++ return 0;
++
++failed_request_irq:
++failed_vchiq_init:
++failed_init_slots:
++ dma_free_coherent(NULL, g_slot_mem_size, g_slot_mem, g_slot_phys);
++
++failed_alloc:
++ return err;
++}
++
++void __exit
++vchiq_platform_exit(VCHIQ_STATE_T *state)
++{
++ free_irq(VCHIQ_DOORBELL_IRQ, state);
++ dma_free_coherent(NULL, g_slot_mem_size,
++ g_slot_mem, g_slot_phys);
++}
++
++void
++remote_event_signal(REMOTE_EVENT_T *event)
++{
++ event->fired = 1;
++
++ /* The test on the next line also ensures the write on the previous line
++ has completed */
++
++ if (event->armed) {
++ /* trigger vc interrupt */
++ dsb(); /* data barrier operation */
++
++ writel(0, __io_address(ARM_0_BELL2));
++ }
++}
++
++int
++vchiq_copy_from_user(void *dst, const void *src, int size)
++{
++ return copy_from_user(dst, src, size);
++}
++
++VCHIQ_STATUS_T
++vchiq_prepare_bulk_data(VCHIQ_BULK_T *bulk, VCHI_MEM_HANDLE_T memhandle,
++ void *offset, int size, int dir)
++{
++ PAGELIST_T *pagelist;
++ int ret;
++
++ vcos_assert(memhandle == VCHI_MEM_HANDLE_INVALID);
++
++ ret = create_pagelist((char __user *)offset, size,
++ (dir == VCHIQ_BULK_RECEIVE)
++ ? PAGELIST_READ
++ : PAGELIST_WRITE,
++ current,
++ &pagelist);
++ if (ret != 0)
++ return VCHIQ_ERROR;
++
++ bulk->handle = memhandle;
++ bulk->data = VCHIQ_ARM_ADDRESS(pagelist);
++
++ /* Store the pagelist address in remote_data, which isn't used by the
++ slave. */
++ bulk->remote_data = pagelist;
++
++ return VCHIQ_SUCCESS;
++}
++
++void
++vchiq_complete_bulk(VCHIQ_BULK_T *bulk)
++{
++ free_pagelist((PAGELIST_T *)bulk->remote_data, bulk->actual);
++}
++
++void
++vchiq_transfer_bulk(VCHIQ_BULK_T *bulk)
++{
++ /*
++ * This should only be called on the master (VideoCore) side, but
++ * provide an implementation to avoid the need for ifdefery.
++ */
++ vcos_assert(!"This code should not be called by the ARM on BCM2835");
++}
++
++void
++vchiq_dump_platform_state(void *dump_context)
++{
++ char buf[80];
++ int len;
++ len = vcos_snprintf(buf, sizeof(buf),
++ " Platform: 2835 (VC master)");
++ vchiq_dump(dump_context, buf, len + 1);
++}
++
++void
++vchiq_platform_paused(VCHIQ_STATE_T *state)
++{
++ vcos_unused(state);
++ vcos_assert_msg(0, "Suspend/resume not supported");
++}
++
++void
++vchiq_platform_resumed(VCHIQ_STATE_T *state)
++{
++ vcos_unused(state);
++ vcos_assert_msg(0, "Suspend/resume not supported");
++}
++
++VCHIQ_STATUS_T
++vchiq_use_service(VCHIQ_SERVICE_HANDLE_T handle)
++{
++ VCHIQ_SERVICE_T *service = (VCHIQ_SERVICE_T *)handle;
++ if (!service)
++ return VCHIQ_ERROR;
++ return VCHIQ_SUCCESS;
++}
++
++VCHIQ_STATUS_T
++vchiq_release_service(VCHIQ_SERVICE_HANDLE_T handle)
++{
++ VCHIQ_SERVICE_T *service = (VCHIQ_SERVICE_T *)handle;
++ if (!service)
++ return VCHIQ_ERROR;
++ return VCHIQ_SUCCESS;
++}
++
++VCHIQ_STATUS_T
++vchiq_check_service(VCHIQ_SERVICE_HANDLE_T handle)
++{
++ VCHIQ_SERVICE_T *service = (VCHIQ_SERVICE_T *)handle;
++ if (!service)
++ return VCHIQ_ERROR;
++ return VCHIQ_SUCCESS;
++}
++
++/*
++ * Local functions
++ */
++
++static irqreturn_t
++vchiq_doorbell_irq(int irq, void *dev_id)
++{
++ VCHIQ_STATE_T *state = dev_id;
++ irqreturn_t ret = IRQ_NONE;
++ unsigned int status;
++
++ /* Read (and clear) the doorbell */
++ status = readl(__io_address(ARM_0_BELL0));
++
++ if (status & 0x4) { /* Was the doorbell rung? */
++ remote_event_pollall(state);
++ ret = IRQ_HANDLED;
++ }
++
++ return ret;
++}
++
++/* There is a potential problem with partial cache lines (pages?)
++ at the ends of the block when reading. If the CPU accessed anything in
++ the same line (page?) then it may have pulled old data into the cache,
++ obscuring the new data underneath. We can solve this by transferring the
++ partial cache lines separately, and allowing the ARM to copy into the
++ cached area.
++
++ N.B. This implementation plays slightly fast and loose with the Linux
++ driver programming rules, e.g. its use of __virt_to_bus instead of
++ dma_map_single, but it isn't a multi-platform driver and it benefits
++ from increased speed as a result.
++ */
++
++static int
++create_pagelist(char __user *buf, size_t count, unsigned short type,
++ struct task_struct *task, PAGELIST_T ** ppagelist)
++{
++ PAGELIST_T *pagelist;
++ struct page **pages;
++ struct page *page;
++ unsigned long *addrs;
++ unsigned int num_pages, offset, i;
++ char *addr, *base_addr, *next_addr;
++ int run, addridx, actual_pages;
++
++ offset = (unsigned int)buf & (PAGE_SIZE - 1);
++ num_pages = (count + offset + PAGE_SIZE - 1) / PAGE_SIZE;
++
++ *ppagelist = NULL;
++
++ /* Allocate enough storage to hold the page pointers and the page list */
++ pagelist = (PAGELIST_T *) kmalloc(sizeof(PAGELIST_T) +
++ (num_pages * sizeof(unsigned long)) +
++ (num_pages * sizeof(pages[0])),
++ GFP_KERNEL);
++
++ vcos_log_trace("create_pagelist - %x", (unsigned int)pagelist);
++ if (!pagelist)
++ return -ENOMEM;
++
++ addrs = pagelist->addrs;
++ pages = (struct page **)(addrs + num_pages);
++
++ down_read(&task->mm->mmap_sem);
++ actual_pages = get_user_pages(task, task->mm,
++ (unsigned long)buf & ~(PAGE_SIZE - 1), num_pages,
++ (type == PAGELIST_READ) /*Write */ , 0 /*Force */ ,
++ pages, NULL /*vmas */ );
++ up_read(&task->mm->mmap_sem);
++
++ if (actual_pages != num_pages)
++ {
++ for (i = 0; i < actual_pages; i++) {
++ page_cache_release(pages[i]);
++ }
++ kfree(pagelist);
++ return -EINVAL;
++ }
++
++ pagelist->length = count;
++ pagelist->type = type;
++ pagelist->offset = offset;
++
++ /* Group the pages into runs of contiguous pages */
++
++ base_addr = VCHIQ_ARM_ADDRESS(page_address(pages[0]));
++ next_addr = base_addr + PAGE_SIZE;
++ addridx = 0;
++ run = 0;
++
++ for (i = 1; i < num_pages; i++) {
++ addr = VCHIQ_ARM_ADDRESS(page_address(pages[i]));
++ if ((addr == next_addr) && (run < (PAGE_SIZE - 1))) {
++ next_addr += PAGE_SIZE;
++ run++;
++ } else {
++ addrs[addridx] = (unsigned long)base_addr + run;
++ addridx++;
++ base_addr = addr;
++ next_addr = addr + PAGE_SIZE;
++ run = 0;
++ }
++ }
++
++ addrs[addridx] = (unsigned long)base_addr + run;
++ addridx++;
++
++ /* Partial cache lines (fragments) require special measures */
++ if ((type == PAGELIST_READ) &&
++ ((pagelist->offset & (CACHE_LINE_SIZE - 1)) ||
++ ((pagelist->offset + pagelist->length) & (CACHE_LINE_SIZE - 1)))) {
++ FRAGMENTS_T *fragments;
++
++ if (down_interruptible(&g_free_fragments_sema) != 0) {
++ kfree(pagelist);
++ return -EINTR;
++ }
++
++ vcos_assert(g_free_fragments != NULL);
++
++ down(&g_free_fragments_mutex);
++ fragments = (FRAGMENTS_T *) g_free_fragments;
++ vcos_assert(fragments != NULL);
++ g_free_fragments = *(FRAGMENTS_T **) g_free_fragments;
++ up(&g_free_fragments_mutex);
++ pagelist->type =
++ PAGELIST_READ_WITH_FRAGMENTS + (fragments -
++ g_fragments_base);
++ }
++
++ for (page = virt_to_page(pagelist);
++ page <= virt_to_page(addrs + num_pages - 1); page++) {
++ flush_dcache_page(page);
++ }
++
++ *ppagelist = pagelist;
++
++ return 0;
++}
++
++static void
++free_pagelist(PAGELIST_T *pagelist, int actual)
++{
++ struct page **pages;
++ unsigned int num_pages, i;
++
++ vcos_log_trace("free_pagelist - %x, %d", (unsigned int)pagelist, actual);
++
++ num_pages =
++ (pagelist->length + pagelist->offset + PAGE_SIZE - 1) / PAGE_SIZE;
++
++ pages = (struct page **)(pagelist->addrs + num_pages);
++
++ /* Deal with any partial cache lines (fragments) */
++ if (pagelist->type >= PAGELIST_READ_WITH_FRAGMENTS) {
++ FRAGMENTS_T *fragments =
++ g_fragments_base + (pagelist->type -
++ PAGELIST_READ_WITH_FRAGMENTS);
++ int head_bytes, tail_bytes;
++
++ if (actual >= 0)
++ {
++ if ((head_bytes = (CACHE_LINE_SIZE - pagelist->offset) & (CACHE_LINE_SIZE - 1)) != 0) {
++ if (head_bytes > actual)
++ head_bytes = actual;
++
++ memcpy((char *)page_address(pages[0]) +
++ pagelist->offset, fragments->headbuf,
++ head_bytes);
++ }
++ if ((head_bytes < actual) &&
++ (tail_bytes =
++ (pagelist->offset + actual) & (CACHE_LINE_SIZE -
++ 1)) != 0) {
++ memcpy((char *)page_address(pages[num_pages - 1]) +
++ ((pagelist->offset + actual) & (PAGE_SIZE -
++ 1) & ~(CACHE_LINE_SIZE - 1)),
++ fragments->tailbuf, tail_bytes);
++ }
++ }
++
++ down(&g_free_fragments_mutex);
++ *(FRAGMENTS_T **) fragments = g_free_fragments;
++ g_free_fragments = fragments;
++ up(&g_free_fragments_mutex);
++ up(&g_free_fragments_sema);
++ }
++
++ for (i = 0; i < num_pages; i++) {
++ if (pagelist->type != PAGELIST_WRITE)
++ set_page_dirty(pages[i]);
++ page_cache_release(pages[i]);
++ }
++
++ kfree(pagelist);
++}
++
++VCHIQ_STATUS_T
++vchiq_platform_suspend(VCHIQ_STATE_T *state)
++{
++ vcos_unused(state);
++ return VCHIQ_ERROR;
++}
+--- /dev/null
++++ b/drivers/misc/vc04_services/interface/vchiq_arm/vchiq_arm.c
+@@ -0,0 +1,1293 @@
++/*
++ * Copyright (c) 2010-2011 Broadcom Corporation. All rights reserved.
++ *
++ * This program is free software; you can redistribute it and/or modify
++ * it under the terms of the GNU General Public License as published by
++ * the Free Software Foundation; either version 2 of the License, or
++ * (at your option) any later version.
++ *
++ * This program is distributed in the hope that it will be useful,
++ * but WITHOUT ANY WARRANTY; without even the implied warranty of
++ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
++ * GNU General Public License for more details.
++ *
++ * You should have received a copy of the GNU General Public License
++ * along with this program; if not, write to the Free Software
++ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
++ */
++
++#include <linux/kernel.h>
++#include <linux/module.h>
++#include <linux/types.h>
++#include <linux/errno.h>
++#include <linux/cdev.h>
++#include <linux/fs.h>
++#include <linux/device.h>
++
++#include "vchiq_core.h"
++#include "vchiq_ioctl.h"
++#include "vchiq_arm.h"
++
++#define DEVICE_NAME "vchiq"
++
++/* Override the default prefix, which would be vchiq_arm (from the filename) */
++#undef MODULE_PARAM_PREFIX
++#define MODULE_PARAM_PREFIX DEVICE_NAME "."
++
++#define VCHIQ_MINOR 0
++
++/* Some per-instance constants */
++#define MAX_COMPLETIONS 16
++#define MAX_SERVICES 64
++#define MAX_ELEMENTS 8
++#define MSG_QUEUE_SIZE 64
++
++#define VCOS_LOG_CATEGORY (&vchiq_arm_log_category)
++
++typedef struct client_service_struct {
++ VCHIQ_SERVICE_T *service;
++ void *userdata;
++ VCHIQ_INSTANCE_T instance;
++ int handle;
++ int is_vchi;
++ volatile int dequeue_pending;
++ volatile int message_available_pos;
++ volatile int msg_insert;
++ volatile int msg_remove;
++ VCOS_EVENT_T insert_event;
++ VCOS_EVENT_T remove_event;
++ VCHIQ_HEADER_T *msg_queue[MSG_QUEUE_SIZE];
++} USER_SERVICE_T;
++
++struct vchiq_instance_struct {
++ VCHIQ_STATE_T *state;
++ VCHIQ_COMPLETION_DATA_T completions[MAX_COMPLETIONS];
++ volatile int completion_insert;
++ volatile int completion_remove;
++ VCOS_EVENT_T insert_event;
++ VCOS_EVENT_T remove_event;
++
++ USER_SERVICE_T services[MAX_SERVICES];
++
++ int connected;
++ int closing;
++ int pid;
++ int mark;
++};
++
++typedef struct dump_context_struct
++{
++ char __user *buf;
++ size_t actual;
++ size_t space;
++ loff_t offset;
++} DUMP_CONTEXT_T;
++
++VCOS_LOG_CAT_T vchiq_arm_log_category;
++
++static struct cdev vchiq_cdev;
++static dev_t vchiq_devid;
++static VCHIQ_STATE_T g_state;
++static struct class *vchiq_class;
++static struct device *vchiq_dev;
++
++static const char *ioctl_names[] =
++{
++ "CONNECT",
++ "SHUTDOWN",
++ "CREATE_SERVICE",
++ "REMOVE_SERVICE",
++ "QUEUE_MESSAGE",
++ "QUEUE_BULK_TRANSMIT",
++ "QUEUE_BULK_RECEIVE",
++ "AWAIT_COMPLETION",
++ "DEQUEUE_MESSAGE",
++ "GET_CLIENT_ID",
++ "GET_CONFIG",
++ "CLOSE_SERVICE",
++ "USE_SERVICE",
++ "RELEASE_SERIVCE"
++};
++
++VCOS_LOG_LEVEL_T vchiq_default_arm_log_level = VCOS_LOG_WARN;
++
++/****************************************************************************
++*
++* find_service_by_handle
++*
++***************************************************************************/
++
++static inline USER_SERVICE_T *find_service_by_handle(
++ VCHIQ_INSTANCE_T instance, int handle )
++{
++ USER_SERVICE_T *user_service;
++
++ if (( handle >= 0 )
++ && ( handle < MAX_SERVICES ))
++ {
++ user_service = &instance->services[ handle ];
++
++ if ( user_service->service != NULL )
++ {
++ return user_service;
++ }
++ }
++
++ return NULL;
++}
++
++/****************************************************************************
++*
++* find_avail_service_handle
++*
++***************************************************************************/
++
++static inline USER_SERVICE_T *find_avail_service_handle(
++ VCHIQ_INSTANCE_T instance)
++{
++ int handle;
++
++ for ( handle = 0; handle < MAX_SERVICES; handle++ )
++ {
++ if ( instance->services[handle].service == NULL )
++ {
++ instance->services[handle].instance = instance;
++ instance->services[handle].handle = handle;
++
++ return &instance->services[handle];
++ }
++ }
++ return NULL;
++}
++
++/****************************************************************************
++*
++* add_completion
++*
++***************************************************************************/
++
++static VCHIQ_STATUS_T
++add_completion(VCHIQ_INSTANCE_T instance, VCHIQ_REASON_T reason,
++ VCHIQ_HEADER_T *header, USER_SERVICE_T *service, void *bulk_userdata)
++{
++ VCHIQ_COMPLETION_DATA_T *completion;
++ DEBUG_INITIALISE(g_state.local)
++
++ while (instance->completion_insert ==
++ (instance->completion_remove + MAX_COMPLETIONS)) {
++ /* Out of space - wait for the client */
++ DEBUG_TRACE(SERVICE_CALLBACK_LINE);
++ vcos_log_trace("add_completion - completion queue full");
++ DEBUG_COUNT(COMPLETION_QUEUE_FULL_COUNT);
++ if (vcos_event_wait(&instance->remove_event) != VCOS_SUCCESS) {
++ vcos_log_info("service_callback interrupted");
++ return VCHIQ_RETRY;
++ } else if (instance->closing) {
++ vcos_log_info("service_callback closing");
++ return VCHIQ_ERROR;
++ }
++ DEBUG_TRACE(SERVICE_CALLBACK_LINE);
++ }
++
++ completion =
++ &instance->
++ completions[instance->completion_insert & (MAX_COMPLETIONS - 1)];
++
++ completion->header = header;
++ completion->reason = reason;
++ completion->service_userdata = service;
++ completion->bulk_userdata = bulk_userdata;
++
++ /* A write barrier is needed here to ensure that the entire completion
++ record is written out before the insert point. */
++ vcos_wmb(&completion->bulk_userdata);
++
++ if (reason == VCHIQ_MESSAGE_AVAILABLE)
++ service->message_available_pos = instance->completion_insert;
++ instance->completion_insert++;
++
++ vcos_event_signal(&instance->insert_event);
++
++ return VCHIQ_SUCCESS;
++}
++
++/****************************************************************************
++*
++* service_callback
++*
++***************************************************************************/
++
++static VCHIQ_STATUS_T
++service_callback(VCHIQ_REASON_T reason, VCHIQ_HEADER_T *header,
++ VCHIQ_SERVICE_HANDLE_T handle, void *bulk_userdata)
++{
++ /* How do we ensure the callback goes to the right client?
++ The service_user data points to a USER_SERVICE_T record containing the
++ original callback and the user state structure, which contains a circular
++ buffer for completion records.
++ */
++ USER_SERVICE_T *service =
++ (USER_SERVICE_T *) VCHIQ_GET_SERVICE_USERDATA(handle);
++ VCHIQ_INSTANCE_T instance = service->instance;
++ DEBUG_INITIALISE(g_state.local)
++
++ DEBUG_TRACE(SERVICE_CALLBACK_LINE);
++ vcos_log_trace
++ ("service_callback - service %lx(%d), reason %d, header %lx, "
++ "instance %lx, bulk_userdata %lx",
++ (unsigned long)service, ((VCHIQ_SERVICE_T *) handle)->localport,
++ reason, (unsigned long)header,
++ (unsigned long)instance, (unsigned long)bulk_userdata);
++
++ if (!instance || instance->closing) {
++ return VCHIQ_SUCCESS;
++ }
++
++ if (header && service->is_vchi)
++ {
++ while (service->msg_insert == (service->msg_remove + MSG_QUEUE_SIZE))
++ {
++ DEBUG_TRACE(SERVICE_CALLBACK_LINE);
++ DEBUG_COUNT(MSG_QUEUE_FULL_COUNT);
++ vcos_log_trace("service_callback - msg queue full");
++ /* If there is no MESSAGE_AVAILABLE in the completion queue, add one */
++ if ((service->message_available_pos - instance->completion_remove) < 0)
++ {
++ VCHIQ_STATUS_T status;
++ vcos_log_warn("Inserting extra MESSAGE_AVAILABLE");
++ DEBUG_TRACE(SERVICE_CALLBACK_LINE);
++ status = add_completion(instance, reason, NULL, service, bulk_userdata);
++ if (status != VCHIQ_SUCCESS)
++ {
++ DEBUG_TRACE(SERVICE_CALLBACK_LINE);
++ return status;
++ }
++ }
++
++ DEBUG_TRACE(SERVICE_CALLBACK_LINE);
++ if (vcos_event_wait(&service->remove_event) != VCOS_SUCCESS) {
++ vcos_log_info("service_callback interrupted");
++ DEBUG_TRACE(SERVICE_CALLBACK_LINE);
++ return VCHIQ_RETRY;
++ } else if (instance->closing) {
++ vcos_log_info("service_callback closing");
++ DEBUG_TRACE(SERVICE_CALLBACK_LINE);
++ return VCHIQ_ERROR;
++ }
++ DEBUG_TRACE(SERVICE_CALLBACK_LINE);
++ }
++
++ service->msg_queue[service->msg_insert & (MSG_QUEUE_SIZE - 1)] =
++ header;
++
++ /* A write memory barrier is needed to ensure that the store of header
++ is completed before the insertion point is updated */
++ vcos_wmb(&service->msg_queue[service->msg_insert & (MSG_QUEUE_SIZE - 1)]);
++
++ service->msg_insert++;
++ vcos_event_signal(&service->insert_event);
++
++ /* If there is a thread waiting in DEQUEUE_MESSAGE, or if
++ there is a MESSAGE_AVAILABLE in the completion queue then
++ bypass the completion queue. */
++ if (((service->message_available_pos - instance->completion_remove) >= 0) ||
++ service->dequeue_pending)
++ {
++ DEBUG_TRACE(SERVICE_CALLBACK_LINE);
++ service->dequeue_pending = 0;
++ return VCHIQ_SUCCESS;
++ }
++
++ header = NULL;
++ }
++ DEBUG_TRACE(SERVICE_CALLBACK_LINE);
++
++ return add_completion(instance, reason, header, service, bulk_userdata);
++}
++
++/****************************************************************************
++*
++* vchiq_ioctl
++*
++***************************************************************************/
++
++static long
++vchiq_ioctl(struct file *file, unsigned int cmd, unsigned long arg)
++{
++ VCHIQ_INSTANCE_T instance = file->private_data;
++ VCHIQ_STATUS_T status = VCHIQ_SUCCESS;
++ long ret = 0;
++ int i, rc;
++ DEBUG_INITIALISE(g_state.local)
++
++ vcos_log_trace("vchiq_ioctl - instance %x, cmd %s, arg %lx",
++ (unsigned int)instance,
++ ((_IOC_TYPE(cmd) == VCHIQ_IOC_MAGIC) && (_IOC_NR(cmd) <= VCHIQ_IOC_MAX)) ?
++ ioctl_names[_IOC_NR(cmd)] : "<invalid>", arg);
++
++ switch (cmd) {
++ case VCHIQ_IOC_SHUTDOWN:
++ if (!instance->connected)
++ break;
++
++ /* Remove all services */
++ for (i = 0; i < MAX_SERVICES; i++) {
++ USER_SERVICE_T *service = &instance->services[i];
++ if (service->service != NULL) {
++ status = vchiq_remove_service(&service->service->base);
++ if (status != VCHIQ_SUCCESS)
++ break;
++ service->service = NULL;
++ }
++ }
++
++ if (status == VCHIQ_SUCCESS) {
++ /* Wake the completion thread and ask it to exit */
++ instance->closing = 1;
++ vcos_event_signal(&instance->insert_event);
++ }
++
++ break;
++
++ case VCHIQ_IOC_CONNECT:
++ if (instance->connected) {
++ ret = -EINVAL;
++ break;
++ }
++ if ((rc=vcos_mutex_lock(&instance->state->mutex)) != VCOS_SUCCESS) {
++ vcos_log_error("vchiq: connect: could not lock mutex for state %d: %d",
++ instance->state->id, rc);
++ ret = -EINTR;
++ break;
++ }
++ status = vchiq_connect_internal(instance->state, instance);
++ vcos_mutex_unlock(&instance->state->mutex);
++
++ if (status == VCHIQ_SUCCESS)
++ instance->connected = 1;
++ else
++ vcos_log_error("vchiq: could not connect: %d", status);
++ break;
++
++ case VCHIQ_IOC_CREATE_SERVICE:
++ {
++ VCHIQ_CREATE_SERVICE_T args;
++ VCHIQ_SERVICE_T *service = NULL;
++ USER_SERVICE_T *user_service = NULL;
++ void *userdata;
++ int srvstate;
++
++ if (copy_from_user
++ (&args, (const void __user *)arg,
++ sizeof(args)) != 0) {
++ ret = -EFAULT;
++ break;
++ }
++
++ for (i = 0; i < MAX_SERVICES; i++) {
++ if (instance->services[i].service == NULL) {
++ user_service = &instance->services[i];
++ break;
++ }
++ }
++
++ if (!user_service) {
++ ret = -EMFILE;
++ break;
++ }
++
++ if (args.is_open) {
++ if (instance->connected)
++ srvstate = VCHIQ_SRVSTATE_OPENING;
++ else {
++ ret = -ENOTCONN;
++ break;
++ }
++ } else {
++ srvstate =
++ instance->connected ?
++ VCHIQ_SRVSTATE_LISTENING :
++ VCHIQ_SRVSTATE_HIDDEN;
++ }
++
++ vcos_mutex_lock(&instance->state->mutex);
++
++ userdata = args.params.userdata;
++ args.params.callback = service_callback;
++ args.params.userdata = user_service;
++ service =
++ vchiq_add_service_internal(instance->state,
++ &args.params, srvstate,
++ instance);
++
++ vcos_mutex_unlock(&instance->state->mutex);
++
++ if (service != NULL) {
++ user_service->service = service;
++ user_service->userdata = userdata;
++ user_service->instance = instance;
++ user_service->handle = i;
++ user_service->is_vchi = args.is_vchi;
++ user_service->dequeue_pending = 0;
++ user_service->message_available_pos = instance->completion_remove - 1;
++ user_service->msg_insert = 0;
++ user_service->msg_remove = 0;
++ vcos_event_create(&user_service->insert_event, "insert_event");
++ vcos_event_create(&user_service->remove_event, "remove_event");
++
++ if (args.is_open) {
++ status =
++ vchiq_open_service_internal
++ (service, instance->pid);
++ if (status != VCHIQ_SUCCESS) {
++ vchiq_remove_service
++ (&service->base);
++ ret =
++ (status ==
++ VCHIQ_RETRY) ? -EINTR :
++ -EIO;
++ user_service->service = NULL;
++ user_service->instance = NULL;
++ vcos_event_delete(&user_service->insert_event);
++ vcos_event_delete(&user_service->remove_event);
++ break;
++ }
++ }
++
++ if (copy_to_user((void __user *)
++ &(((VCHIQ_CREATE_SERVICE_T __user
++ *) arg)->handle),
++ (const void *)&user_service->
++ handle,
++ sizeof(user_service->
++ handle)) != 0)
++ ret = -EFAULT;
++ } else {
++ ret = -EEXIST;
++ }
++ }
++ break;
++
++ case VCHIQ_IOC_CLOSE_SERVICE:
++ {
++ USER_SERVICE_T *user_service;
++ int handle = (int)arg;
++
++ user_service = find_service_by_handle(instance, handle);
++ if (user_service != NULL)
++ {
++ int is_server = (user_service->service->public_fourcc != VCHIQ_FOURCC_INVALID);
++
++ status =
++ vchiq_close_service(&user_service->service->base);
++ if ((status == VCHIQ_SUCCESS) && !is_server)
++ {
++ vcos_event_delete(&user_service->insert_event);
++ vcos_event_delete(&user_service->remove_event);
++ user_service->service = NULL;
++ }
++ } else
++ ret = -EINVAL;
++ }
++ break;
++
++ case VCHIQ_IOC_REMOVE_SERVICE:
++ {
++ USER_SERVICE_T *user_service;
++ int handle = (int)arg;
++
++ user_service = find_service_by_handle(instance, handle);
++ if (user_service != NULL)
++ {
++ status =
++ vchiq_remove_service(&user_service->service->base);
++ if (status == VCHIQ_SUCCESS)
++ {
++ vcos_event_delete(&user_service->insert_event);
++ vcos_event_delete(&user_service->remove_event);
++ user_service->service = NULL;
++ }
++ } else
++ ret = -EINVAL;
++ }
++ break;
++
++ case VCHIQ_IOC_USE_SERVICE:
++ case VCHIQ_IOC_RELEASE_SERVICE:
++ {
++ USER_SERVICE_T *user_service;
++ int handle = (int)arg;
++
++ user_service = find_service_by_handle(instance, handle);
++ if (user_service != NULL)
++ {
++ status = (cmd == VCHIQ_IOC_USE_SERVICE) ? vchiq_use_service(&user_service->service->base) : vchiq_release_service(&user_service->service->base);
++ if (status != VCHIQ_SUCCESS)
++ {
++ ret = -EINVAL; // ???
++ }
++ }
++ }
++ break;
++
++ case VCHIQ_IOC_QUEUE_MESSAGE:
++ {
++ VCHIQ_QUEUE_MESSAGE_T args;
++ USER_SERVICE_T *user_service;
++
++ if (copy_from_user
++ (&args, (const void __user *)arg,
++ sizeof(args)) != 0) {
++ ret = -EFAULT;
++ break;
++ }
++ user_service = find_service_by_handle(instance, args.handle);
++ if ((user_service != NULL) && (args.count <= MAX_ELEMENTS))
++ {
++ /* Copy elements into kernel space */
++ VCHIQ_ELEMENT_T elements[MAX_ELEMENTS];
++ if (copy_from_user
++ (elements, args.elements,
++ args.count * sizeof(VCHIQ_ELEMENT_T)) == 0)
++ status =
++ vchiq_queue_message
++ (&user_service->service->base,
++ elements, args.count);
++ else
++ ret = -EFAULT;
++ } else {
++ ret = -EINVAL;
++ }
++ }
++ break;
++
++ case VCHIQ_IOC_QUEUE_BULK_TRANSMIT:
++ case VCHIQ_IOC_QUEUE_BULK_RECEIVE:
++ {
++ VCHIQ_QUEUE_BULK_TRANSFER_T args;
++ USER_SERVICE_T *user_service;
++ VCHIQ_BULK_DIR_T dir =
++ (cmd == VCHIQ_IOC_QUEUE_BULK_TRANSMIT) ?
++ VCHIQ_BULK_TRANSMIT : VCHIQ_BULK_RECEIVE;
++
++ if (copy_from_user
++ (&args, (const void __user *)arg,
++ sizeof(args)) != 0) {
++ ret = -EFAULT;
++ break;
++ }
++ user_service = find_service_by_handle(instance, args.handle);
++ if (user_service != NULL)
++ {
++ status =
++ vchiq_bulk_transfer
++ ((VCHIQ_SERVICE_T *)user_service->service,
++ VCHI_MEM_HANDLE_INVALID,
++ args.data, args.size,
++ args.userdata, args.mode,
++ dir);
++ } else {
++ ret = -EINVAL;
++ }
++ }
++ break;
++
++ case VCHIQ_IOC_AWAIT_COMPLETION:
++ {
++ VCHIQ_AWAIT_COMPLETION_T args;
++
++ DEBUG_TRACE(AWAIT_COMPLETION_LINE);
++ if (!instance->connected) {
++ ret = -ENOTCONN;
++ break;
++ }
++
++ if (copy_from_user
++ (&args, (const void __user *)arg,
++ sizeof(args)) != 0) {
++ ret = -EFAULT;
++ break;
++ }
++ DEBUG_TRACE(AWAIT_COMPLETION_LINE);
++ while ((instance->completion_remove ==
++ instance->completion_insert)
++ && !instance->closing) {
++ DEBUG_TRACE(AWAIT_COMPLETION_LINE);
++ if (vcos_event_wait(&instance->insert_event) !=
++ VCOS_SUCCESS) {
++ DEBUG_TRACE(AWAIT_COMPLETION_LINE);
++ vcos_log_info
++ ("AWAIT_COMPLETION interrupted");
++ ret = -EINTR;
++ break;
++ }
++ }
++ DEBUG_TRACE(AWAIT_COMPLETION_LINE);
++
++ /* A read memory barrier is needed to stop prefetch of a stale
++ completion record */
++ vcos_rmb();
++
++ if (ret == 0) {
++ int msgbufcount = args.msgbufcount;
++ for (ret = 0; ret < args.count; ret++) {
++ VCHIQ_COMPLETION_DATA_T *completion;
++ USER_SERVICE_T *service;
++ VCHIQ_HEADER_T *header;
++ if (instance->completion_remove ==
++ instance->completion_insert)
++ break;
++ completion =
++ &instance->
++ completions
++ [instance->completion_remove &
++ (MAX_COMPLETIONS - 1)];
++
++ service = (USER_SERVICE_T *)completion->service_userdata;
++ completion->service_userdata = service->userdata;
++
++ header = completion->header;
++ if (header)
++ {
++ void __user *msgbuf;
++ int msglen;
++
++ msglen = header->size + sizeof(VCHIQ_HEADER_T);
++ /* This must be a VCHIQ-style service */
++ if (args.msgbufsize < msglen)
++ {
++ vcos_log_error("header %x: msgbufsize %x < msglen %x",
++ (unsigned int)header, args.msgbufsize, msglen);
++ vcos_assert(0);
++ if (ret == 0)
++ ret = -EMSGSIZE;
++ break;
++ }
++ if (msgbufcount <= 0)
++ {
++ /* Stall here for lack of a buffer for the message */
++ break;
++ }
++ /* Get the pointer from user space */
++ msgbufcount--;
++ if (copy_from_user(&msgbuf,
++ (const void __user *)&args.msgbufs[msgbufcount],
++ sizeof(msgbuf)) != 0)
++ {
++ if (ret == 0)
++ ret = -EFAULT;
++ break;
++ }
++
++ /* Copy the message to user space */
++ if (copy_to_user(msgbuf, header, msglen) != 0)
++ {
++ if (ret == 0)
++ ret = -EFAULT;
++ break;
++ }
++
++ /* Now it has been copied, the message can be released. */
++ vchiq_release_message(&service->service->base, header);
++
++ /* The completion must point to the msgbuf */
++ completion->header = msgbuf;
++ }
++
++ if (copy_to_user
++ ((void __user *)((size_t) args.buf +
++ ret *
++ sizeof
++ (VCHIQ_COMPLETION_DATA_T)),
++ completion,
++ sizeof(VCHIQ_COMPLETION_DATA_T)) !=
++ 0) {
++ if (ret == 0)
++ ret = -EFAULT;
++ break;
++ }
++ instance->completion_remove++;
++ }
++
++ if (msgbufcount != args.msgbufcount)
++ {
++ if (copy_to_user((void __user *)
++ &((VCHIQ_AWAIT_COMPLETION_T *)arg)->msgbufcount,
++ &msgbufcount, sizeof(msgbufcount)) != 0)
++ {
++ ret = -EFAULT;
++ break;
++ }
++ }
++ }
++
++ if (ret != 0)
++ vcos_event_signal(&instance->remove_event);
++ DEBUG_TRACE(AWAIT_COMPLETION_LINE);
++ }
++ break;
++
++ case VCHIQ_IOC_DEQUEUE_MESSAGE:
++ {
++ VCHIQ_DEQUEUE_MESSAGE_T args;
++ USER_SERVICE_T *user_service;
++ VCHIQ_HEADER_T *header;
++
++ DEBUG_TRACE(DEQUEUE_MESSAGE_LINE);
++ if (copy_from_user
++ (&args, (const void __user *)arg,
++ sizeof(args)) != 0) {
++ ret = -EFAULT;
++ break;
++ }
++ user_service = &instance->services[args.handle];
++ if ((args.handle < 0) || (args.handle >= MAX_SERVICES) ||
++ (user_service->service == NULL) ||
++ (user_service->is_vchi == 0)) {
++ ret = -EINVAL;
++ break;
++ }
++ if (user_service->msg_remove == user_service->msg_insert)
++ {
++ if (!args.blocking)
++ {
++ DEBUG_TRACE(DEQUEUE_MESSAGE_LINE);
++ ret = -EWOULDBLOCK;
++ break;
++ }
++ user_service->dequeue_pending = 1;
++ do {
++ DEBUG_TRACE(DEQUEUE_MESSAGE_LINE);
++ if (vcos_event_wait(&user_service->insert_event) !=
++ VCOS_SUCCESS) {
++ vcos_log_info("DEQUEUE_MESSAGE interrupted");
++ ret = -EINTR;
++ break;
++ }
++ }
++ while (user_service->msg_remove == user_service->msg_insert);
++ }
++
++ /* A read memory barrier is needed to stop prefetch of a stale
++ header value */
++ vcos_rmb();
++
++ header = user_service->msg_queue[user_service->msg_remove &
++ (MSG_QUEUE_SIZE - 1)];
++ if (header == NULL)
++ ret = -ENOTCONN;
++ else if (header->size <= args.bufsize)
++ {
++ /* Copy to user space if msgbuf is not NULL */
++ if ((args.buf == NULL) ||
++ (copy_to_user((void __user *)args.buf, header->data,
++ header->size) == 0))
++ {
++ ret = header->size;
++ vchiq_release_message(&user_service->service->base,
++ header);
++ user_service->msg_remove++;
++ vcos_event_signal(&user_service->remove_event);
++ }
++ else
++ ret = -EFAULT;
++ }
++ else
++ {
++ vcos_log_error("header %x: bufsize %x < size %x",
++ (unsigned int)header, args.bufsize, header->size);
++ vcos_assert(0);
++ ret = -EMSGSIZE;
++ }
++ DEBUG_TRACE(DEQUEUE_MESSAGE_LINE);
++ }
++ break;
++
++ case VCHIQ_IOC_GET_CLIENT_ID:
++ {
++ USER_SERVICE_T *user_service;
++ int handle = (int)arg;
++
++ user_service = find_service_by_handle(instance, handle);
++ if (user_service != NULL)
++ ret = vchiq_get_client_id(&user_service->service->base);
++ else
++ ret = 0;
++ }
++ break;
++
++ case VCHIQ_IOC_GET_CONFIG:
++ {
++ VCHIQ_GET_CONFIG_T args;
++ VCHIQ_CONFIG_T config;
++
++ if (copy_from_user
++ (&args, (const void __user *)arg,
++ sizeof(args)) != 0) {
++ ret = -EFAULT;
++ break;
++ }
++ if (args.config_size > sizeof(config))
++ {
++ ret = -EINVAL;
++ break;
++ }
++ status = vchiq_get_config(instance, args.config_size, &config);
++ if (status == VCHIQ_SUCCESS)
++ {
++ if (copy_to_user((void __user *)args.pconfig,
++ &config, args.config_size) != 0)
++ {
++ ret = -EFAULT;
++ break;
++ }
++ }
++ }
++ break;
++
++ case VCHIQ_IOC_SET_SERVICE_OPTION:
++ {
++ VCHIQ_SET_SERVICE_OPTION_T args;
++ USER_SERVICE_T *user_service;
++
++ if (copy_from_user(
++ &args, (const void __user *)arg,
++ sizeof(args)) != 0)
++ {
++ ret = -EFAULT;
++ break;
++ }
++
++ user_service = find_service_by_handle(instance, args.handle);
++ if (user_service != NULL)
++ {
++ status = vchiq_set_service_option(
++ &user_service->service->base,
++ args.option, args.value);
++ }
++ else
++ {
++ ret = -EINVAL;
++ }
++ }
++ break;
++
++ default:
++ ret = -ENOTTY;
++ break;
++ }
++
++ if (ret == 0) {
++ if (status == VCHIQ_ERROR)
++ ret = -EIO;
++ else if (status == VCHIQ_RETRY)
++ ret = -EINTR;
++ }
++
++ if ((ret < 0) && (ret != -EINTR) && (ret != -EWOULDBLOCK))
++ vcos_log_warn(" ioctl instance %lx, cmd %s -> status %d, %ld",
++ (unsigned long)instance,
++ (_IOC_NR(cmd) <= VCHIQ_IOC_MAX) ? ioctl_names[_IOC_NR(cmd)] :
++ "<invalid>", status, ret);
++ else
++ vcos_log_trace(" ioctl instance %lx, cmd %s -> status %d, %ld",
++ (unsigned long)instance,
++ (_IOC_NR(cmd) <= VCHIQ_IOC_MAX) ? ioctl_names[_IOC_NR(cmd)] :
++ "<invalid>", status, ret);
++
++ return ret;
++}
++
++/****************************************************************************
++*
++* vchiq_open
++*
++***************************************************************************/
++
++static int
++vchiq_open(struct inode *inode, struct file *file)
++{
++ int dev = iminor(inode) & 0x0f;
++ vcos_log_info("vchiq_open");
++ switch (dev) {
++ case VCHIQ_MINOR:
++ {
++ VCHIQ_STATE_T *state = vchiq_get_state();
++ VCHIQ_INSTANCE_T instance;
++
++ if (!state)
++ {
++ vcos_log_error( "vchiq has no connection to VideoCore");
++ return -ENOTCONN;
++ }
++
++ instance = kzalloc(sizeof(*instance), GFP_KERNEL);
++ if (!instance)
++ return -ENOMEM;
++
++ instance->state = state;
++ instance->pid = current->tgid;
++ vcos_event_create(&instance->insert_event, DEVICE_NAME);
++ vcos_event_create(&instance->remove_event, DEVICE_NAME);
++
++ file->private_data = instance;
++ }
++ break;
++
++ default:
++ vcos_log_error("Unknown minor device: %d", dev);
++ return -ENXIO;
++ }
++
++ return 0;
++}
++
++/****************************************************************************
++*
++* vchiq_release
++*
++***************************************************************************/
++
++static int
++vchiq_release(struct inode *inode, struct file *file)
++{
++ int dev = iminor(inode) & 0x0f;
++ int ret = 0;
++ switch (dev) {
++ case VCHIQ_MINOR:
++ {
++ VCHIQ_INSTANCE_T instance = file->private_data;
++ int i;
++
++ vcos_log_info("vchiq_release: instance=%lx",
++ (unsigned long)instance);
++
++ instance->closing = 1;
++
++ /* Wake the slot handler if the completion queue is full */
++ vcos_event_signal(&instance->remove_event);
++
++ /* Mark all services for termination... */
++
++ for (i = 0; i < MAX_SERVICES; i++) {
++ USER_SERVICE_T *user_service =
++ &instance->services[i];
++ if (user_service->service != NULL)
++ {
++ /* Wake the slot handler if the msg queue is full */
++ vcos_event_signal(&user_service->remove_event);
++
++ if ((user_service->service->srvstate != VCHIQ_SRVSTATE_CLOSEWAIT) &&
++ (user_service->service->srvstate != VCHIQ_SRVSTATE_LISTENING))
++ {
++ vchiq_terminate_service_internal(user_service->service);
++ }
++ }
++ }
++
++ /* ...and wait for them to die */
++
++ for (i = 0; i < MAX_SERVICES; i++) {
++ USER_SERVICE_T *user_service =
++ &instance->services[i];
++ if (user_service->service != NULL)
++ {
++ /* Wait in this non-portable fashion because interruptible
++ calls will not block in this context. */
++ while ((user_service->service->srvstate != VCHIQ_SRVSTATE_CLOSEWAIT) &&
++ (user_service->service->srvstate != VCHIQ_SRVSTATE_LISTENING))
++ {
++ down(&user_service->service->remove_event);
++ }
++
++ vchiq_free_service_internal
++ (user_service->service);
++ }
++ }
++
++ vcos_event_delete(&instance->insert_event);
++ vcos_event_delete(&instance->remove_event);
++
++ kfree(instance);
++ file->private_data = NULL;
++ }
++ break;
++
++ default:
++ vcos_log_error("Unknown minor device: %d", dev);
++ ret = -ENXIO;
++ }
++
++ return ret;
++}
++
++/****************************************************************************
++*
++* vchiq_dump
++*
++***************************************************************************/
++
++void
++vchiq_dump(void *dump_context, const char *str, int len)
++{
++ DUMP_CONTEXT_T *context = (DUMP_CONTEXT_T *)dump_context;
++
++ if ((context->actual >= 0) && (context->actual < context->space))
++ {
++ int copy_bytes;
++ if (context->offset > 0)
++ {
++ int skip_bytes = vcos_min(len, context->offset);
++ str += skip_bytes;
++ len -= skip_bytes;
++ context->offset -= skip_bytes;
++ if (context->offset > 0)
++ return;
++ }
++ copy_bytes = vcos_min(len, context->space - context->actual);
++ if (copy_bytes == 0)
++ return;
++ if (copy_to_user(context->buf + context->actual, str, copy_bytes))
++ context->actual = -EFAULT;
++ context->actual += copy_bytes;
++ len -= copy_bytes;
++
++ /* If tne terminating NUL is included in the length, then it marks
++ * the end of a line and should be replaced with a carriage return.
++ */
++ if ((len == 0) && (str[copy_bytes - 1] == '\0'))
++ {
++ char cr = '\n';
++ if (copy_to_user(context->buf + context->actual - 1, &cr, 1))
++ {
++ context->actual = -EFAULT;
++ }
++ }
++ }
++}
++
++/****************************************************************************
++*
++* vchiq_dump_platform_instance_state
++*
++***************************************************************************/
++
++void
++vchiq_dump_platform_instances(void *dump_context)
++{
++ VCHIQ_STATE_T *state = vchiq_get_state();
++ char buf[80];
++ int len;
++ int i;
++
++ /* There is no list of instances, so instead scan all services,
++ marking those that have been dumped. */
++
++ for (i = 0; i < state->unused_service; i++)
++ {
++ VCHIQ_SERVICE_T *service = state->services[i];
++ VCHIQ_INSTANCE_T instance;
++
++ if (service
++ && ((instance = service->instance) != NULL)
++ && (service->base.callback == service_callback))
++ instance->mark = 0;
++ }
++
++ for (i = 0; i < state->unused_service; i++)
++ {
++ VCHIQ_SERVICE_T *service = state->services[i];
++ VCHIQ_INSTANCE_T instance;
++
++ if (service
++ && ((instance = service->instance) != NULL)
++ && (service->base.callback == service_callback))
++ {
++ if (!instance->mark)
++ {
++ len = vcos_snprintf(buf, sizeof(buf),
++ "Instance %x: pid %d,%s completions %d/%d",
++ (unsigned int)instance, instance->pid,
++ instance->connected ? " connected," : "",
++ instance->completion_insert - instance->completion_remove,
++ MAX_COMPLETIONS);
++
++ vchiq_dump(dump_context, buf, len + 1);
++
++ instance->mark = 1;
++ }
++ }
++ }
++}
++
++/****************************************************************************
++*
++* vchiq_dump_platform_service_state
++*
++***************************************************************************/
++
++void
++vchiq_dump_platform_service_state(void *dump_context, VCHIQ_SERVICE_T *service)
++{
++ USER_SERVICE_T *user_service = (USER_SERVICE_T *)service->base.userdata;
++ char buf[80];
++ int len;
++
++ len = vcos_snprintf(buf, sizeof(buf), " instance %x",
++ service->instance);
++
++ if ((service->base.callback == service_callback) && user_service->is_vchi)
++ {
++ len += vcos_snprintf(buf + len, sizeof(buf) - len,
++ ", %d/%d messages",
++ user_service->msg_insert - user_service->msg_remove,
++ MSG_QUEUE_SIZE);
++
++ if (user_service->dequeue_pending)
++ len += vcos_snprintf(buf + len, sizeof(buf) - len,
++ " (dequeue pending)");
++ }
++
++ vchiq_dump(dump_context, buf, len + 1);
++}
++
++/****************************************************************************
++*
++* vchiq_read
++*
++***************************************************************************/
++
++static ssize_t
++vchiq_read(struct file * file, char __user * buf,
++ size_t count, loff_t *ppos)
++{
++ DUMP_CONTEXT_T context;
++ context.buf = buf;
++ context.actual = 0;
++ context.space = count;
++ context.offset = *ppos;
++
++ vchiq_dump_state(&context, &g_state);
++
++ if (context.actual >= 0)
++ *ppos += context.actual;
++
++ return context.actual;
++}
++
++VCHIQ_STATE_T *
++vchiq_get_state(void)
++{
++
++ if (g_state.remote == NULL)
++ {
++ printk( "%s: g_state.remote == NULL\n", __func__ );
++ }
++ else
++ {
++ if ( g_state.remote->initialised != 1)
++ {
++ printk( "%s: g_state.remote->initialised != 1 (%d)\n", __func__, g_state.remote->initialised );
++ }
++ }
++
++ return ((g_state.remote != NULL) &&
++ (g_state.remote->initialised == 1)) ? &g_state : NULL;
++}
++
++static const struct file_operations
++vchiq_fops = {
++ .owner = THIS_MODULE,
++ .unlocked_ioctl = vchiq_ioctl,
++ .open = vchiq_open,
++ .release = vchiq_release,
++ .read = vchiq_read
++};
++
++/****************************************************************************
++*
++* vchiq_init - called when the module is loaded.
++*
++***************************************************************************/
++
++static int __init
++vchiq_init(void)
++{
++ int err;
++ void *ptr_err;
++
++ err = vchiq_platform_vcos_init();
++ if (err != 0)
++ goto failed_platform_vcos_init;
++
++ vcos_log_set_level(VCOS_LOG_CATEGORY, vchiq_default_arm_log_level);
++ vcos_log_register("vchiq_arm", VCOS_LOG_CATEGORY);
++
++ if ((err =
++ alloc_chrdev_region(&vchiq_devid, VCHIQ_MINOR, 1,
++ DEVICE_NAME)) != 0) {
++ vcos_log_error("Unable to allocate device number");
++ goto failed_alloc_chrdev;
++ }
++ cdev_init(&vchiq_cdev, &vchiq_fops);
++ vchiq_cdev.owner = THIS_MODULE;
++ if ((err = cdev_add(&vchiq_cdev, vchiq_devid, 1)) != 0) {
++ vcos_log_error("Unable to register device");
++ goto failed_cdev_add;
++ }
++
++ /* create sysfs entries */
++ vchiq_class = class_create(THIS_MODULE, DEVICE_NAME);
++ if (IS_ERR(ptr_err = vchiq_class))
++ goto failed_class_create;
++
++ vchiq_dev = device_create(vchiq_class, NULL,
++ vchiq_devid, NULL, "vchiq");
++ if (IS_ERR(ptr_err = vchiq_dev))
++ goto failed_device_create;
++
++ err = vchiq_platform_init(&g_state);
++ if (err != 0)
++ goto failed_platform_init;
++
++ vcos_log_error("vchiq: initialised - version %d (min %d), device %d.%d",
++ VCHIQ_VERSION, VCHIQ_VERSION_MIN,
++ MAJOR(vchiq_devid), MINOR(vchiq_devid));
++
++ return 0;
++
++failed_platform_init:
++ device_destroy(vchiq_class, vchiq_devid);
++failed_device_create:
++ class_destroy(vchiq_class);
++failed_class_create:
++ cdev_del(&vchiq_cdev);
++ err = PTR_ERR(ptr_err);
++failed_cdev_add:
++ unregister_chrdev_region(vchiq_devid, 1);
++failed_alloc_chrdev:
++failed_platform_vcos_init:
++ printk(KERN_WARNING "could not load vchiq\n");
++ return err;
++}
++/****************************************************************************
++*
++* vchiq_exit - called when the module is unloaded.
++*
++***************************************************************************/
++
++static void __exit
++vchiq_exit(void)
++{
++ vchiq_platform_exit(&g_state);
++ device_destroy(vchiq_class, vchiq_devid);
++ class_destroy(vchiq_class);
++ cdev_del(&vchiq_cdev);
++ unregister_chrdev_region(vchiq_devid, 1);
++ vcos_log_unregister(VCOS_LOG_CATEGORY);
++}
++
++module_init(vchiq_init);
++module_exit(vchiq_exit);
++MODULE_LICENSE("GPL");
++MODULE_AUTHOR("Broadcom Corporation");
+--- /dev/null
++++ b/drivers/misc/vc04_services/interface/vchiq_arm/vchiq_arm.h
+@@ -0,0 +1,38 @@
++/*
++ * Copyright (c) 2010-2011 Broadcom Corporation. All rights reserved.
++ *
++ * This program is free software; you can redistribute it and/or modify
++ * it under the terms of the GNU General Public License as published by
++ * the Free Software Foundation; either version 2 of the License, or
++ * (at your option) any later version.
++ *
++ * This program is distributed in the hope that it will be useful,
++ * but WITHOUT ANY WARRANTY; without even the implied warranty of
++ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
++ * GNU General Public License for more details.
++ *
++ * You should have received a copy of the GNU General Public License
++ * along with this program; if not, write to the Free Software
++ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
++ */
++
++#ifndef VCHIQ_ARM_H
++#define VCHIQ_ARM_H
++
++#include "vchiq_core.h"
++
++extern VCOS_LOG_CAT_T vchiq_arm_log_category;
++
++extern int __init
++vchiq_platform_vcos_init(void);
++
++extern int __init
++vchiq_platform_init(VCHIQ_STATE_T *state);
++
++extern void __exit
++vchiq_platform_exit(VCHIQ_STATE_T *state);
++
++extern VCHIQ_STATE_T *
++vchiq_get_state(void);
++
++#endif /* VCHIQ_ARM_H */
+--- /dev/null
++++ b/drivers/misc/vc04_services/interface/vchiq_arm/vchiq_cfg.h
+@@ -0,0 +1,43 @@
++/*
++ * Copyright (c) 2010-2011 Broadcom Corporation. All rights reserved.
++ *
++ * This program is free software; you can redistribute it and/or modify
++ * it under the terms of the GNU General Public License as published by
++ * the Free Software Foundation; either version 2 of the License, or
++ * (at your option) any later version.
++ *
++ * This program is distributed in the hope that it will be useful,
++ * but WITHOUT ANY WARRANTY; without even the implied warranty of
++ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
++ * GNU General Public License for more details.
++ *
++ * You should have received a copy of the GNU General Public License
++ * along with this program; if not, write to the Free Software
++ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
++ */
++
++#ifndef VCHIQ_CFG_H
++#define VCHIQ_CFG_H
++
++#define VCHIQ_MAGIC VCHIQ_MAKE_FOURCC('V','C','H','I')
++/* The version of VCHIQ - change with any non-trivial change */
++#define VCHIQ_VERSION 2
++/* The minimum compatible version - update to match VCHIQ_VERSION with any incompatible change */
++#define VCHIQ_VERSION_MIN 2
++
++#define VCHIQ_MAX_SERVICES 4096
++#define VCHIQ_MAX_SLOTS 128
++#define VCHIQ_MAX_SLOTS_PER_SIDE 64
++
++#define VCHIQ_NUM_CURRENT_BULKS 32
++#define VCHIQ_NUM_SERVICE_BULKS 4
++
++#ifndef VCHIQ_ENABLE_DEBUG
++#define VCHIQ_ENABLE_DEBUG 1
++#endif
++
++#ifndef VCHIQ_ENABLE_STATS
++#define VCHIQ_ENABLE_STATS 1
++#endif
++
++#endif /* VCHIQ_CFG_H */
+--- /dev/null
++++ b/drivers/misc/vc04_services/interface/vchiq_arm/vchiq_connected.c
+@@ -0,0 +1,101 @@
++/*****************************************************************************
++* Copyright 2001 - 2010 Broadcom Corporation. All rights reserved.
++*
++* Unless you and Broadcom execute a separate written software license
++* agreement governing use of this software, this software is licensed to you
++* under the terms of the GNU General Public License version 2, available at
++* http://www.broadcom.com/licenses/GPLv2.php (the "GPL").
++*
++* Notwithstanding the above, under no circumstances may you combine this
++* software in any way with any other Broadcom software provided under a
++* license other than the GPL, without Broadcom's express prior written
++* consent.
++*****************************************************************************/
++
++#include "vcos.h"
++#include "vchiq_connected.h"
++#include <linux/module.h>
++
++#define MAX_CALLBACKS 10
++
++static int g_connected = 0;
++static int g_num_deferred_callbacks;
++static VCHIQ_CONNECTED_CALLBACK_T g_deferred_callback[ MAX_CALLBACKS ];
++static VCOS_ONCE_T g_once_init;
++static VCOS_MUTEX_T g_connected_mutex;
++
++extern VCOS_LOG_CAT_T vchiq_core_log_category;
++#define VCOS_LOG_CATEGORY (&vchiq_core_log_category)
++
++/****************************************************************************
++*
++* Function to initialize our lock.
++*
++***************************************************************************/
++
++static void connected_init( void )
++{
++ vcos_mutex_create( &g_connected_mutex, "connected_mutex");
++}
++
++/****************************************************************************
++*
++* This function is used to defer initialization until the vchiq stack is
++* initialized. If the stack is already initialized, then the callback will
++* be made immediately, otherwise it will be deferred until
++* vchiq_call_connected_callbacks is called.
++*
++***************************************************************************/
++
++void vchiq_add_connected_callback( VCHIQ_CONNECTED_CALLBACK_T callback )
++{
++ vcos_once( &g_once_init, connected_init );
++
++ vcos_mutex_lock( &g_connected_mutex );
++
++ if ( g_connected )
++ {
++ // We're already connected. Call the callback immediately.
++
++ callback();
++ }
++ else
++ {
++ if ( g_num_deferred_callbacks >= MAX_CALLBACKS )
++ {
++ vcos_log_error( "There already %d callback registered - please increase MAX_CALLBACKS",
++ g_num_deferred_callbacks );
++ }
++ else
++ {
++ g_deferred_callback[ g_num_deferred_callbacks ] = callback;
++ g_num_deferred_callbacks++;
++ }
++ }
++ vcos_mutex_unlock( &g_connected_mutex );
++}
++
++/****************************************************************************
++*
++* This function is called by the vchiq stack once it has been connected to
++* the videocore and clients can start to use the stack.
++*
++***************************************************************************/
++
++void vchiq_call_connected_callbacks( void )
++{
++ int i;
++
++ vcos_once( &g_once_init, connected_init );
++
++ vcos_mutex_lock( &g_connected_mutex );
++ for ( i = 0; i < g_num_deferred_callbacks; i++ )\
++ {
++ g_deferred_callback[i]();
++ }
++ g_num_deferred_callbacks = 0;
++ g_connected = 1;
++ vcos_mutex_unlock( &g_connected_mutex );
++}
++
++EXPORT_SYMBOL( vchiq_add_connected_callback );
+--- /dev/null
++++ b/drivers/misc/vc04_services/interface/vchiq_arm/vchiq_connected.h
+@@ -0,0 +1,32 @@
++/*****************************************************************************
++* Copyright 2001 - 2010 Broadcom Corporation. All rights reserved.
++*
++* Unless you and Broadcom execute a separate written software license
++* agreement governing use of this software, this software is licensed to you
++* under the terms of the GNU General Public License version 2, available at
++* http://www.broadcom.com/licenses/GPLv2.php (the "GPL").
++*
++* Notwithstanding the above, under no circumstances may you combine this
++* software in any way with any other Broadcom software provided under a
++* license other than the GPL, without Broadcom's express prior written
++* consent.
++*****************************************************************************/
++
++#ifndef VCHIQ_CONNECTED_H
++#define VCHIQ_CONNECTED_H
++
++/* ---- Include Files ----------------------------------------------------- */
++
++/* ---- Constants and Types ---------------------------------------------- */
++
++typedef void (*VCHIQ_CONNECTED_CALLBACK_T)( void );
++
++/* ---- Variable Externs ------------------------------------------------- */
++
++/* ---- Function Prototypes ---------------------------------------------- */
++
++void vchiq_add_connected_callback( VCHIQ_CONNECTED_CALLBACK_T callback );
++void vchiq_call_connected_callbacks( void );
++
++#endif /* VCHIQ_CONNECTED_H */
++
+--- /dev/null
++++ b/drivers/misc/vc04_services/interface/vchiq_arm/vchiq_core.c
+@@ -0,0 +1,2604 @@
++/*
++ * Copyright (c) 2010-2011 Broadcom Corporation. All rights reserved.
++ *
++ * This program is free software; you can redistribute it and/or modify
++ * it under the terms of the GNU General Public License as published by
++ * the Free Software Foundation; either version 2 of the License, or
++ * (at your option) any later version.
++ *
++ * This program is distributed in the hope that it will be useful,
++ * but WITHOUT ANY WARRANTY; without even the implied warranty of
++ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
++ * GNU General Public License for more details.
++ *
++ * You should have received a copy of the GNU General Public License
++ * along with this program; if not, write to the Free Software
++ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
++ */
++
++#include "vchiq_core.h"
++
++#define VCHIQ_SLOT_HANDLER_STACK 8192
++
++#define SLOT_INFO_FROM_INDEX(state, index) (state->slot_info + (index))
++#define SLOT_DATA_FROM_INDEX(state, index) (state->slot_data + (index))
++#define SLOT_INDEX_FROM_DATA(state, data) (((unsigned int)((char *)data - (char *)state->slot_data)) / VCHIQ_SLOT_SIZE)
++#define SLOT_INDEX_FROM_INFO(state, info) ((unsigned int)(info - state->slot_info))
++#define SLOT_QUEUE_INDEX_FROM_POS(pos) ((int)((unsigned int)(pos) / VCHIQ_SLOT_SIZE))
++
++#define VCOS_LOG_CATEGORY (&vchiq_core_log_category)
++
++#define BULK_INDEX(x) (x & (VCHIQ_NUM_SERVICE_BULKS - 1))
++
++typedef struct bulk_waiter_struct
++{
++ VCOS_EVENT_T event;
++ int actual;
++} BULK_WAITER_T;
++
++typedef struct vchiq_open_payload_struct{
++ int fourcc;
++ int client_id;
++ short version;
++ short version_min;
++} VCHIQ_OPEN_PAYLOAD_T;
++
++vcos_static_assert(sizeof(VCHIQ_HEADER_T) == 8); /* we require this for consistency between endpoints */
++vcos_static_assert(IS_POW2(sizeof(VCHIQ_HEADER_T)));
++vcos_static_assert(IS_POW2(VCHIQ_NUM_CURRENT_BULKS));
++vcos_static_assert(IS_POW2(VCHIQ_NUM_SERVICE_BULKS));
++
++VCOS_LOG_CAT_T vchiq_core_log_category;
++VCOS_LOG_CAT_T vchiq_core_msg_log_category;
++VCOS_LOG_LEVEL_T vchiq_default_core_log_level = VCOS_LOG_WARN;
++VCOS_LOG_LEVEL_T vchiq_default_core_msg_log_level = VCOS_LOG_WARN;
++
++static const char *const srvstate_names[] =
++{
++ "FREE",
++ "HIDDEN",
++ "LISTENING",
++ "OPENING",
++ "OPEN",
++ "CLOSESENT",
++ "CLOSING",
++ "CLOSEWAIT"
++};
++
++static const char *const reason_names[] =
++{
++ "SERVICE_OPENED",
++ "SERVICE_CLOSED",
++ "MESSAGE_AVAILABLE",
++ "BULK_TRANSMIT_DONE",
++ "BULK_RECEIVE_DONE",
++ "BULK_TRANSMIT_ABORTED",
++ "BULK_RECEIVE_ABORTED"
++};
++
++static const char *const conn_state_names[] =
++{
++ "DISCONNECTED",
++ "CONNECTED",
++ "PAUSING",
++ "PAUSE_SENT",
++ "PAUSED",
++ "RESUMING"
++};
++
++static const char *msg_type_str( unsigned int msg_type )
++{
++ switch (msg_type) {
++ case VCHIQ_MSG_PADDING: return "PADDING";
++ case VCHIQ_MSG_CONNECT: return "CONNECT";
++ case VCHIQ_MSG_OPEN: return "OPEN";
++ case VCHIQ_MSG_OPENACK: return "OPENACK";
++ case VCHIQ_MSG_CLOSE: return "CLOSE";
++ case VCHIQ_MSG_DATA: return "DATA";
++ case VCHIQ_MSG_BULK_RX: return "BULK_RX";
++ case VCHIQ_MSG_BULK_TX: return "BULK_TX";
++ case VCHIQ_MSG_BULK_RX_DONE: return "BULK_RX_DONE";
++ case VCHIQ_MSG_BULK_TX_DONE: return "BULK_TX_DONE";
++ case VCHIQ_MSG_PAUSE: return "PAUSE";
++ case VCHIQ_MSG_RESUME: return "RESUME";
++ }
++ return "???";
++}
++
++static inline void
++vchiq_set_service_state(VCHIQ_SERVICE_T *service, int newstate)
++{
++ vcos_log_info("%d: srv:%d %s->%s", service->state->id, service->localport,
++ srvstate_names[service->srvstate],
++ srvstate_names[newstate]);
++ service->srvstate = newstate;
++}
++
++static inline VCHIQ_STATUS_T
++make_service_callback(VCHIQ_SERVICE_T *service, VCHIQ_REASON_T reason,
++ VCHIQ_HEADER_T *header, void *bulk_userdata)
++{
++ vcos_log_trace("%d: callback:%d (%s, %x, %x)", service->state->id,
++ service->localport, reason_names[reason],
++ (unsigned int)header, (unsigned int)bulk_userdata);
++ return service->base.callback(reason, header, &service->base, bulk_userdata);
++}
++
++static inline void
++vchiq_set_conn_state(VCHIQ_STATE_T *state, VCHIQ_CONNSTATE_T newstate)
++{
++ vcos_log_info("%d: %s->%s", state->id,
++ conn_state_names[state->conn_state],
++ conn_state_names[newstate]);
++ state->conn_state = newstate;
++}
++
++static inline void
++remote_event_create(REMOTE_EVENT_T *event)
++{
++ event->armed = 0;
++ /* Don't clear the 'fired' flag because it may already have been set by the other side */
++ vcos_event_create(event->event, "vchiq");
++}
++
++static inline void
++remote_event_destroy(REMOTE_EVENT_T *event)
++{
++ vcos_event_delete(event->event);
++}
++
++static inline int
++remote_event_wait(REMOTE_EVENT_T *event)
++{
++ if (!event->fired)
++ {
++ event->armed = 1;
++ if (event->fired) /* Also ensures the write has completed */
++ event->armed = 0;
++ else if (vcos_event_wait(event->event) != VCOS_SUCCESS)
++ return 0;
++ }
++
++ event->fired = 0;
++ return 1;
++}
++
++static inline void
++remote_event_signal_local(REMOTE_EVENT_T *event)
++{
++ event->armed = 0;
++ vcos_event_signal(event->event);
++}
++
++static inline void
++remote_event_poll(REMOTE_EVENT_T *event)
++{
++ if (event->armed)
++ remote_event_signal_local(event);
++}
++
++void
++remote_event_pollall(VCHIQ_STATE_T *state)
++{
++ remote_event_poll(&state->local->trigger);
++ remote_event_poll(&state->local->recycle);
++}
++
++/* Round up message sizes so that any space at the end of a slot is always big
++ enough for a header. This relies on header size being a power of two, which
++ has been verified earlier by a static assertion. */
++
++static inline unsigned int
++calc_stride(unsigned int size)
++{
++ /* Allow room for the header */
++ size += sizeof(VCHIQ_HEADER_T);
++
++ /* Round up */
++ return (size + sizeof(VCHIQ_HEADER_T) - 1) & ~(sizeof(VCHIQ_HEADER_T) - 1);
++}
++
++static VCHIQ_SERVICE_T *
++get_listening_service(VCHIQ_STATE_T *state, int fourcc)
++{
++ int i;
++
++ vcos_assert(fourcc != VCHIQ_FOURCC_INVALID);
++
++ for (i = 0; i < state->unused_service; i++)
++ {
++ VCHIQ_SERVICE_T *service = state->services[i];
++ if (service &&
++ (service->public_fourcc == fourcc) &&
++ ((service->srvstate == VCHIQ_SRVSTATE_LISTENING) ||
++ ((service->srvstate == VCHIQ_SRVSTATE_OPEN) &&
++ (service->remoteport == VCHIQ_PORT_FREE))))
++ return service;
++ }
++
++ return NULL;
++}
++
++static VCHIQ_SERVICE_T *
++get_connected_service(VCHIQ_STATE_T *state, unsigned int port)
++{
++ int i;
++ for (i = 0; i < state->unused_service; i++) {
++ VCHIQ_SERVICE_T *service = state->services[i];
++ if (service && (service->srvstate == VCHIQ_SRVSTATE_OPEN)
++ && (service->remoteport == port)) {
++ return service;
++ }
++ }
++ return NULL;
++}
++
++static inline void
++request_poll(VCHIQ_STATE_T *state, VCHIQ_SERVICE_T *service, int poll_type)
++{
++ if (service)
++ {
++ vcos_atomic_flags_or(&service->poll_flags, (1 << poll_type));
++ vcos_atomic_flags_or(&state->poll_services[service->localport>>5],
++ (1 <<(service->localport & 0x1f)));
++ }
++
++ state->poll_needed = 1;
++ vcos_wmb(&state->poll_needed);
++
++ /* ... and ensure the slot handler runs. */
++ remote_event_signal_local(&state->local->trigger);
++}
++
++/* Called from queue_message, by the slot handler and application threads,
++ with slot_mutex held */
++static VCHIQ_HEADER_T *
++reserve_space(VCHIQ_STATE_T *state, int space, int is_blocking)
++{
++ VCHIQ_SHARED_STATE_T *local = state->local;
++ int tx_pos = state->local_tx_pos;
++ int slot_space = VCHIQ_SLOT_SIZE - (tx_pos & VCHIQ_SLOT_MASK);
++
++ if (space > slot_space) {
++ VCHIQ_HEADER_T *header;
++ /* Fill the remaining space with padding */
++ vcos_assert(state->tx_data != NULL);
++ header = (VCHIQ_HEADER_T *) (state->tx_data + (tx_pos & VCHIQ_SLOT_MASK));
++ header->msgid = VCHIQ_MSGID_PADDING;
++ header->size = slot_space - sizeof(VCHIQ_HEADER_T);
++
++ tx_pos += slot_space;
++ }
++
++ /* If necessary, get the next slot. */
++ if ((tx_pos & VCHIQ_SLOT_MASK) == 0)
++ {
++ int slot_index;
++
++ /* If there is no free slot... */
++ if (tx_pos == (state->slot_queue_available * VCHIQ_SLOT_SIZE))
++ {
++ /* ...wait for one. */
++ VCHIQ_STATS_INC(state, slot_stalls);
++
++ /* But first, flush through the last slot. */
++ local->tx_pos = tx_pos;
++ remote_event_signal(&state->remote->trigger);
++
++ do {
++ if (!is_blocking ||
++ (vcos_event_wait(&state->slot_available_event) != VCOS_SUCCESS))
++ {
++ return NULL; /* No space available now */
++ }
++ }
++ while (tx_pos == (state->slot_queue_available * VCHIQ_SLOT_SIZE));
++ }
++
++ slot_index = local->slot_queue[SLOT_QUEUE_INDEX_FROM_POS(tx_pos) & VCHIQ_SLOT_QUEUE_MASK];
++ state->tx_data = (char *)SLOT_DATA_FROM_INDEX(state, slot_index);
++ }
++
++ state->local_tx_pos = tx_pos + space;
++
++ return (VCHIQ_HEADER_T *)(state->tx_data + (tx_pos & VCHIQ_SLOT_MASK));
++}
++
++/* Called with slot_mutex held */
++static void
++process_free_queue(VCHIQ_STATE_T *state)
++{
++ VCHIQ_SHARED_STATE_T *local = state->local;
++ BITSET_T service_found[BITSET_SIZE(VCHIQ_MAX_SERVICES)];
++ int slot_queue_available;
++
++ /* Use a read memory barrier to ensure that any state that may have
++ been modified by another thread is not masked by stale prefetched
++ values. */
++ vcos_rmb();
++
++ /* Find slots which have been freed by the other side, and return them to
++ the available queue. */
++ slot_queue_available = state->slot_queue_available;
++
++ while (slot_queue_available != local->slot_queue_recycle)
++ {
++ int pos;
++ int slot_index = local->slot_queue[slot_queue_available++ & VCHIQ_SLOT_QUEUE_MASK];
++ char *data = (char *)SLOT_DATA_FROM_INDEX(state, slot_index);
++
++ vcos_log_trace("%d: pfq %d=%x %x %x", state->id, slot_index,
++ (unsigned int)data, local->slot_queue_recycle,
++ slot_queue_available);
++
++ /* Initialise the bitmask for services which have used this slot */
++ BITSET_ZERO(service_found);
++
++ pos = 0;
++
++ while (pos < VCHIQ_SLOT_SIZE)
++ {
++ VCHIQ_HEADER_T *header = (VCHIQ_HEADER_T *)(data + pos);
++ int msgid = header->msgid;
++ if (VCHIQ_MSG_TYPE(msgid) == VCHIQ_MSG_DATA)
++ {
++ int port = VCHIQ_MSG_SRCPORT(msgid);
++ if (!BITSET_IS_SET(service_found, port))
++ {
++ VCHIQ_SERVICE_QUOTA_T *service_quota =
++ &state->service_quotas[port];
++
++ /* Set the found bit for this service */
++ BITSET_SET(service_found, port);
++
++ if (service_quota->slot_use_count > 0)
++ {
++ service_quota->slot_use_count--;
++ /* Signal the service in case it has dropped below its quota */
++ vcos_event_signal(&service_quota->quota_event);
++ vcos_log_trace("%d: pfq:%d %x@%x - slot_use->%d",
++ state->id, port,
++ header->size, (unsigned int)header,
++ service_quota->slot_use_count);
++ }
++ else
++ {
++ vcos_log_error("service %d slot_use_count=%d (header %x,"
++ " msgid %x, header->msgid %x, header->size %x)",
++ port, service_quota->slot_use_count,
++ (unsigned int)header, msgid, header->msgid,
++ header->size);
++ vcos_assert(0);
++ }
++ }
++ }
++
++ pos += calc_stride(header->size);
++ if (pos > VCHIQ_SLOT_SIZE)
++ {
++ vcos_log_error("pos %x: header %x, msgid %x, header->msgid %x, header->size %x",
++ pos, (unsigned int)header, msgid, header->msgid, header->size);
++ vcos_assert(0);
++ }
++ }
++ }
++
++ if (slot_queue_available != state->slot_queue_available)
++ {
++ state->slot_queue_available = slot_queue_available;
++ vcos_wmb(&state->slot_queue_available);
++ vcos_event_signal(&state->slot_available_event);
++ }
++}
++
++/* Called by the slot handler and application threads */
++static VCHIQ_STATUS_T
++queue_message(VCHIQ_STATE_T *state, VCHIQ_SERVICE_T *service,
++ int msgid, const VCHIQ_ELEMENT_T *elements,
++ int count, int size, int is_blocking)
++{
++ VCHIQ_SHARED_STATE_T *local;
++ VCHIQ_SERVICE_QUOTA_T *service_quota = NULL;
++ VCHIQ_HEADER_T *header;
++
++ unsigned int stride;
++
++ local = state->local;
++
++ stride = calc_stride(size);
++
++ vcos_assert(stride <= VCHIQ_SLOT_SIZE);
++
++ /* On platforms where vcos_mutex_lock cannot fail, the return will never
++ be taken and the compiler may optimise out that code. Let Coverity
++ know this is intentional.
++ */
++ /* coverity[constant_expression_result] */
++ if ((VCHIQ_MSG_TYPE(msgid) != VCHIQ_MSG_RESUME) &&
++ (vcos_mutex_lock(&state->slot_mutex) != VCOS_SUCCESS))
++ return VCHIQ_RETRY;
++
++ if (service)
++ {
++ int tx_end_index = SLOT_QUEUE_INDEX_FROM_POS(state->local_tx_pos + stride - 1);
++
++ if (service->srvstate != VCHIQ_SRVSTATE_OPEN)
++ {
++ /* The service has been closed, probably while waiting for the mutex */
++ vcos_mutex_unlock(&state->slot_mutex);
++ return VCHIQ_ERROR;
++ }
++
++ service_quota = &state->service_quotas[service->localport];
++
++ /* ...ensure it doesn't use more than its quota of slots */
++ while ((tx_end_index != service_quota->previous_tx_index) &&
++ (service_quota->slot_use_count == service_quota->slot_quota))
++ {
++ vcos_log_trace("%d: qm:%d %s,%x - quota stall",
++ state->id, service->localport,
++ msg_type_str(VCHIQ_MSG_TYPE(msgid)), size);
++ VCHIQ_SERVICE_STATS_INC(service, quota_stalls);
++ vcos_mutex_unlock(&state->slot_mutex);
++ if (vcos_event_wait(&service_quota->quota_event) != VCOS_SUCCESS)
++ return VCHIQ_RETRY;
++ if (vcos_mutex_lock(&state->slot_mutex) != VCOS_SUCCESS)
++ return VCHIQ_RETRY;
++ vcos_assert(service_quota->slot_use_count <= service_quota->slot_quota);
++ tx_end_index = SLOT_QUEUE_INDEX_FROM_POS(state->local_tx_pos + stride - 1);
++ }
++ }
++
++ header = reserve_space(state, stride, is_blocking);
++
++ if (!header) {
++ if (service)
++ VCHIQ_SERVICE_STATS_INC(service, slot_stalls);
++ vcos_mutex_unlock(&state->slot_mutex);
++ return VCHIQ_RETRY;
++ }
++
++ if (service) {
++ int i, pos;
++ int tx_end_index;
++
++ vcos_log_info("%d: qm %s@%x,%x (%d->%d)", state->id,
++ msg_type_str(VCHIQ_MSG_TYPE(msgid)),
++ (unsigned int)header, size,
++ VCHIQ_MSG_SRCPORT(msgid),
++ VCHIQ_MSG_DSTPORT(msgid));
++
++ for (i = 0, pos = 0; i < (unsigned int)count;
++ pos += elements[i++].size)
++ if (elements[i].size) {
++ if (vchiq_copy_from_user
++ (header->data + pos, elements[i].data,
++ (size_t) elements[i].size) !=
++ VCHIQ_SUCCESS) {
++ vcos_mutex_unlock(&state->slot_mutex);
++ VCHIQ_SERVICE_STATS_INC(service, error_count);
++ return VCHIQ_ERROR;
++ }
++ if (i == 0) {
++ vcos_log_dump_mem( &vchiq_core_msg_log_category,
++ "Sent", 0, header->data + pos,
++ vcos_min( 64, elements[0].size ));
++ }
++ }
++
++ /* If this transmission can't fit in the last slot used by this service... */
++ tx_end_index = SLOT_QUEUE_INDEX_FROM_POS(state->local_tx_pos - 1);
++ if (tx_end_index != service_quota->previous_tx_index)
++ {
++ service_quota->slot_use_count++;
++ vcos_log_trace("%d: qm:%d %s,%x - slot_use->%d",
++ state->id, service->localport,
++ msg_type_str(VCHIQ_MSG_TYPE(msgid)), size,
++ service_quota->slot_use_count);
++ }
++
++ service_quota->previous_tx_index = tx_end_index;
++ VCHIQ_SERVICE_STATS_INC(service, ctrl_tx_count);
++ VCHIQ_SERVICE_STATS_ADD(service, ctrl_tx_bytes, size);
++ } else {
++ vcos_log_info("%d: qm %s@%x,%x (%d->%d)", state->id,
++ msg_type_str(VCHIQ_MSG_TYPE(msgid)),
++ (unsigned int)header, size,
++ VCHIQ_MSG_SRCPORT(msgid),
++ VCHIQ_MSG_DSTPORT(msgid));
++ if (size != 0)
++ {
++ vcos_assert((count == 1) && (size == elements[0].size));
++ memcpy(header->data, elements[0].data, elements[0].size);
++ }
++ VCHIQ_STATS_INC(state, ctrl_tx_count);
++ }
++
++ header->msgid = msgid;
++ header->size = size;
++
++ if (vcos_is_log_enabled( &vchiq_core_msg_log_category, VCOS_LOG_INFO))
++ {
++ int svc_fourcc;
++
++ svc_fourcc = service
++ ? service->base.fourcc
++ : VCHIQ_MAKE_FOURCC('?','?','?','?');
++
++ vcos_log_impl( &vchiq_core_msg_log_category,
++ VCOS_LOG_INFO,
++ "Sent Msg %s(%u) to %c%c%c%c s:%u d:%d len:%d",
++ msg_type_str(VCHIQ_MSG_TYPE(msgid)),
++ VCHIQ_MSG_TYPE(msgid),
++ VCHIQ_FOURCC_AS_4CHARS(svc_fourcc),
++ VCHIQ_MSG_SRCPORT(msgid),
++ VCHIQ_MSG_DSTPORT(msgid),
++ size );
++ }
++
++ /* Make the new tx_pos visible to the peer. */
++ local->tx_pos = state->local_tx_pos;
++ vcos_wmb(&local->tx_pos);
++
++ if (VCHIQ_MSG_TYPE(msgid) != VCHIQ_MSG_PAUSE)
++ vcos_mutex_unlock(&state->slot_mutex);
++
++ remote_event_signal(&state->remote->trigger);
++
++ return VCHIQ_SUCCESS;
++}
++
++static inline void
++claim_slot(VCHIQ_SLOT_INFO_T *slot)
++{
++ slot->use_count++;
++}
++
++static void
++release_slot(VCHIQ_STATE_T *state, VCHIQ_SLOT_INFO_T *slot_info)
++{
++ int release_count;
++ vcos_mutex_lock(&state->recycle_mutex);
++
++ release_count = slot_info->release_count;
++ slot_info->release_count = ++release_count;
++
++ if (release_count == slot_info->use_count)
++ {
++ int slot_queue_recycle;
++ /* Add to the freed queue */
++
++ /* A read barrier is necessary here to prevent speculative fetches of
++ remote->slot_queue_recycle from overtaking the mutex. */
++ vcos_rmb();
++
++ slot_queue_recycle = state->remote->slot_queue_recycle;
++ state->remote->slot_queue[slot_queue_recycle & VCHIQ_SLOT_QUEUE_MASK] =
++ SLOT_INDEX_FROM_INFO(state, slot_info);
++ state->remote->slot_queue_recycle = slot_queue_recycle + 1;
++ vcos_log_info("%d: release_slot %d - recycle->%x",
++ state->id, SLOT_INDEX_FROM_INFO(state, slot_info),
++ state->remote->slot_queue_recycle);
++
++ /* A write barrier is necessary, but remote_event_signal contains one. */
++ remote_event_signal(&state->remote->recycle);
++ }
++
++ vcos_mutex_unlock(&state->recycle_mutex);
++}
++
++/* Called by the slot handler - don't hold the bulk mutex */
++static VCHIQ_STATUS_T
++notify_bulks(VCHIQ_SERVICE_T *service, VCHIQ_BULK_QUEUE_T *queue)
++{
++ VCHIQ_STATUS_T status = VCHIQ_SUCCESS;
++
++ vcos_log_trace("%d: nb:%d %cx - p=%x rn=%x r=%x",
++ service->state->id, service->localport,
++ (queue == &service->bulk_tx) ? 't' : 'r',
++ queue->process, queue->remote_notify, queue->remove);
++
++ if (service->state->is_master)
++ {
++ while (queue->remote_notify != queue->process)
++ {
++ VCHIQ_BULK_T *bulk = &queue->bulks[BULK_INDEX(queue->remote_notify)];
++ int msgtype = (bulk->dir == VCHIQ_BULK_TRANSMIT) ?
++ VCHIQ_MSG_BULK_RX_DONE : VCHIQ_MSG_BULK_TX_DONE;
++ int msgid = VCHIQ_MAKE_MSG(msgtype, service->localport, service->remoteport);
++ VCHIQ_ELEMENT_T element = { &bulk->actual, 4 };
++ /* Only reply to non-dummy bulk requests */
++ if (bulk->remote_data)
++ {
++ status = queue_message(service->state, NULL, msgid, &element, 1, 4, 0);
++ if (status != VCHIQ_SUCCESS)
++ break;
++ }
++ queue->remote_notify++;
++ }
++ }
++ else
++ {
++ queue->remote_notify = queue->process;
++ }
++
++ if (status == VCHIQ_SUCCESS)
++ {
++ while (queue->remove != queue->remote_notify)
++ {
++ VCHIQ_BULK_T *bulk = &queue->bulks[BULK_INDEX(queue->remove)];
++
++ /* Only generate callbacks for non-dummy bulk requests */
++ if (bulk->data)
++ {
++ if (bulk->actual != VCHIQ_BULK_ACTUAL_ABORTED)
++ {
++ if (bulk->dir == VCHIQ_BULK_TRANSMIT)
++ {
++ VCHIQ_SERVICE_STATS_INC(service, bulk_tx_count);
++ VCHIQ_SERVICE_STATS_ADD(service, bulk_tx_bytes, bulk->actual);
++ }
++ else
++ {
++ VCHIQ_SERVICE_STATS_INC(service, bulk_rx_count);
++ VCHIQ_SERVICE_STATS_ADD(service, bulk_rx_bytes, bulk->actual);
++ }
++ }
++ else
++ {
++ VCHIQ_SERVICE_STATS_INC(service, bulk_aborted_count);
++ }
++ if (bulk->mode == VCHIQ_BULK_MODE_BLOCKING)
++ {
++ BULK_WAITER_T *waiter = (BULK_WAITER_T *)bulk->userdata;
++ if (waiter)
++ {
++ waiter->actual = bulk->actual;
++ vcos_event_signal(&waiter->event);
++ }
++ }
++ else if (bulk->mode == VCHIQ_BULK_MODE_CALLBACK)
++ {
++ VCHIQ_REASON_T reason = (bulk->dir == VCHIQ_BULK_TRANSMIT) ?
++ ((bulk->actual == VCHIQ_BULK_ACTUAL_ABORTED) ?
++ VCHIQ_BULK_TRANSMIT_ABORTED : VCHIQ_BULK_TRANSMIT_DONE) :
++ ((bulk->actual == VCHIQ_BULK_ACTUAL_ABORTED) ?
++ VCHIQ_BULK_RECEIVE_ABORTED : VCHIQ_BULK_RECEIVE_DONE);
++ status = make_service_callback(service, reason,
++ NULL, bulk->userdata);
++ if (status == VCHIQ_RETRY)
++ break;
++ }
++ }
++
++ queue->remove++;
++ vcos_event_signal(&service->bulk_remove_event);
++ }
++ }
++
++ if (status != VCHIQ_SUCCESS)
++ request_poll(service->state, service, (queue == &service->bulk_tx) ?
++ VCHIQ_POLL_TXNOTIFY : VCHIQ_POLL_RXNOTIFY);
++
++ return status;
++}
++
++/* Called by the slot handler thread */
++static void
++poll_services(VCHIQ_STATE_T *state)
++{
++ int group, i;
++
++ for (group = 0; group < BITSET_SIZE(state->unused_service); group++)
++ {
++ uint32_t flags;
++ flags = vcos_atomic_flags_get_and_clear(&state->poll_services[group]);
++ for (i = 0; flags; i++)
++ {
++ if (flags & (1 << i))
++ {
++ VCHIQ_SERVICE_T *service = state->services[(group<<5) + i];
++ uint32_t service_flags =
++ vcos_atomic_flags_get_and_clear(&service->poll_flags);
++ if (service_flags & (1 << VCHIQ_POLL_TERMINATE))
++ {
++ vcos_log_info("%d: ps - terminate %d<->%d", state->id, service->localport, service->remoteport);
++ if (vchiq_close_service_internal(service, 0/*!close_recvd*/) != VCHIQ_SUCCESS)
++ request_poll(state, service, VCHIQ_POLL_TERMINATE);
++ }
++ if (service_flags & (1 << VCHIQ_POLL_TXNOTIFY))
++ notify_bulks(service, &service->bulk_tx);
++ if (service_flags & (1 << VCHIQ_POLL_RXNOTIFY))
++ notify_bulks(service, &service->bulk_rx);
++ flags &= ~(1 << i);
++ }
++ }
++ }
++}
++
++/* Called by the slot handler or application threads, holding the bulk mutex. */
++static int
++resolve_bulks(VCHIQ_SERVICE_T *service, VCHIQ_BULK_QUEUE_T *queue)
++{
++ VCHIQ_STATE_T *state = service->state;
++ int resolved = 0;
++
++ while ((queue->process != queue->local_insert) &&
++ (queue->process != queue->remote_insert))
++ {
++ VCHIQ_BULK_T *bulk = &queue->bulks[BULK_INDEX(queue->process)];
++
++ vcos_log_trace("%d: rb:%d %cx - li=%x ri=%x p=%x",
++ state->id, service->localport,
++ (queue == &service->bulk_tx) ? 't' : 'r',
++ queue->local_insert, queue->remote_insert,
++ queue->process);
++
++ vcos_assert((int)(queue->local_insert - queue->process) > 0);
++ vcos_assert((int)(queue->remote_insert - queue->process) > 0);
++ vchiq_transfer_bulk(bulk);
++
++ if (vcos_is_log_enabled( &vchiq_core_msg_log_category, VCOS_LOG_INFO))
++ {
++ const char *header = (queue == &service->bulk_tx) ?
++ "Send Bulk to" : "Recv Bulk from";
++ if (bulk->actual != VCHIQ_BULK_ACTUAL_ABORTED)
++ vcos_log_impl( &vchiq_core_msg_log_category,
++ VCOS_LOG_INFO,
++ "%s %c%c%c%c d:%d len:%d %x<->%x",
++ header,
++ VCHIQ_FOURCC_AS_4CHARS(service->base.fourcc),
++ service->remoteport,
++ bulk->size,
++ (unsigned int)bulk->data,
++ (unsigned int)bulk->remote_data );
++ else
++ vcos_log_impl( &vchiq_core_msg_log_category,
++ VCOS_LOG_INFO,
++ "%s %c%c%c%c d:%d ABORTED - tx len:%d, rx len:%d %x<->%x",
++ header,
++ VCHIQ_FOURCC_AS_4CHARS(service->base.fourcc),
++ service->remoteport,
++ bulk->size,
++ bulk->remote_size,
++ (unsigned int)bulk->data,
++ (unsigned int)bulk->remote_data );
++ }
++
++ vchiq_complete_bulk(bulk);
++ queue->process++;
++ resolved++;
++ }
++ return resolved;
++}
++
++/* Called with the bulk_mutex held */
++static void
++abort_outstanding_bulks(VCHIQ_SERVICE_T *service, VCHIQ_BULK_QUEUE_T *queue)
++{
++ int is_tx = (queue == &service->bulk_tx);
++ vcos_log_trace("%d: aob:%d %cx - li=%x ri=%x p=%x",
++ service->state->id, service->localport, is_tx ? 't' : 'r',
++ queue->local_insert, queue->remote_insert, queue->process);
++
++ vcos_assert((int)(queue->local_insert - queue->process) >= 0);
++ vcos_assert((int)(queue->remote_insert - queue->process) >= 0);
++
++ while ((queue->process != queue->local_insert) ||
++ (queue->process != queue->remote_insert))
++ {
++ VCHIQ_BULK_T *bulk = &queue->bulks[BULK_INDEX(queue->process)];
++
++ if (queue->process == queue->remote_insert)
++ {
++ /* fabricate a matching dummy bulk */
++ bulk->remote_data = NULL;
++ bulk->remote_size = 0;
++ queue->remote_insert++;
++ }
++
++ if (queue->process != queue->local_insert)
++ {
++ vchiq_complete_bulk(bulk);
++
++ if (vcos_is_log_enabled( &vchiq_core_msg_log_category, VCOS_LOG_INFO))
++ {
++ vcos_log_impl( &vchiq_core_msg_log_category,
++ VCOS_LOG_INFO,
++ "%s %c%c%c%c d:%d ABORTED - tx len:%d, rx len:%d",
++ is_tx ? "Send Bulk to" : "Recv Bulk from",
++ VCHIQ_FOURCC_AS_4CHARS(service->base.fourcc),
++ service->remoteport,
++ bulk->size,
++ bulk->remote_size );
++ }
++ }
++ else
++ {
++ /* fabricate a matching dummy bulk */
++ bulk->data = NULL;
++ bulk->size = 0;
++ bulk->actual = VCHIQ_BULK_ACTUAL_ABORTED;
++ bulk->dir = is_tx ? VCHIQ_BULK_TRANSMIT : VCHIQ_BULK_RECEIVE;
++ queue->local_insert++;
++ }
++
++ queue->process++;
++ }
++}
++
++static void
++pause_bulks(VCHIQ_STATE_T *state)
++{
++ int i;
++
++ /* Block bulk transfers from all services */
++ for (i = 0; i < state->unused_service; i++)
++ {
++ VCHIQ_SERVICE_T *service = state->services[i];
++ if (!service || (service->srvstate != VCHIQ_SRVSTATE_OPEN))
++ continue;
++
++ vcos_log_trace("locking bulk_mutex for service %d", i);
++ vcos_mutex_lock(&service->bulk_mutex);
++ }
++}
++
++static void
++resume_bulks(VCHIQ_STATE_T *state)
++{
++ int i;
++
++ /* Poll all services in case any bulk transfers have been
++ deferred */
++ for (i = 0; i < state->unused_service; i++)
++ {
++ VCHIQ_SERVICE_T *service = state->services[i];
++ if (!service || (service->srvstate != VCHIQ_SRVSTATE_OPEN))
++ continue;
++
++ if (resolve_bulks(service, &service->bulk_tx))
++ request_poll(state, service, VCHIQ_POLL_TXNOTIFY);
++ if (resolve_bulks(service, &service->bulk_rx))
++ request_poll(state, service, VCHIQ_POLL_RXNOTIFY);
++ vcos_log_trace("unlocking bulk_mutex for service %d", i);
++ vcos_mutex_unlock(&service->bulk_mutex);
++ }
++}
++
++/* Called by the slot handler thread */
++static void
++parse_rx_slots(VCHIQ_STATE_T *state)
++{
++ VCHIQ_SHARED_STATE_T *remote = state->remote;
++ int tx_pos;
++ DEBUG_INITIALISE(state->local)
++
++ tx_pos = remote->tx_pos;
++
++ while (state->rx_pos != tx_pos) {
++ VCHIQ_SERVICE_T *service = NULL;
++ VCHIQ_HEADER_T *header;
++ int msgid, size;
++ int type;
++ unsigned int localport, remoteport;
++
++ DEBUG_TRACE(PARSE_LINE);
++ if (!state->rx_data)
++ {
++ int rx_index;
++ vcos_assert((state->rx_pos & VCHIQ_SLOT_MASK) == 0);
++ rx_index = remote->slot_queue[SLOT_QUEUE_INDEX_FROM_POS(state->rx_pos) & VCHIQ_SLOT_QUEUE_MASK];
++ state->rx_data = (char *)SLOT_DATA_FROM_INDEX(state, rx_index);
++ state->rx_info = SLOT_INFO_FROM_INDEX(state, rx_index);
++
++ /* Initialise use_count to one, and increment release_count at the end
++ of the slot to avoid releasing the slot prematurely. */
++ state->rx_info->use_count = 1;
++ state->rx_info->release_count = 0;
++ }
++
++ header = (VCHIQ_HEADER_T *)(state->rx_data + (state->rx_pos & VCHIQ_SLOT_MASK));
++ DEBUG_VALUE(PARSE_HEADER, (int)header);
++ msgid = header->msgid;
++ DEBUG_VALUE(PARSE_MSGID, msgid);
++ size = header->size;
++ type = VCHIQ_MSG_TYPE(msgid);
++ localport = VCHIQ_MSG_DSTPORT(msgid);
++ remoteport = VCHIQ_MSG_SRCPORT(msgid);
++
++ if (type != VCHIQ_MSG_DATA)
++ {
++ VCHIQ_STATS_INC(state, ctrl_rx_count);
++ }
++
++ switch (type)
++ {
++ case VCHIQ_MSG_OPENACK:
++ case VCHIQ_MSG_CLOSE:
++ case VCHIQ_MSG_DATA:
++ case VCHIQ_MSG_BULK_RX:
++ case VCHIQ_MSG_BULK_TX:
++ case VCHIQ_MSG_BULK_RX_DONE:
++ case VCHIQ_MSG_BULK_TX_DONE:
++ if (localport <= VCHIQ_PORT_MAX)
++ {
++ service = state->services[localport];
++ if (service && (service->srvstate == VCHIQ_SRVSTATE_FREE))
++ service = NULL;
++ }
++ if (!service)
++ {
++ vcos_log_error(
++ "%d: prs %s@%x (%d->%d) - invalid/closed service %d",
++ state->id, msg_type_str(type), (unsigned int)header,
++ remoteport, localport, localport);
++ goto skip_message;
++ }
++ default:
++ break;
++ }
++
++ if ( vcos_is_log_enabled( &vchiq_core_msg_log_category, VCOS_LOG_INFO))
++ {
++ int svc_fourcc;
++
++ svc_fourcc = service
++ ? service->base.fourcc
++ : VCHIQ_MAKE_FOURCC('?','?','?','?');
++ vcos_log_impl( &vchiq_core_msg_log_category,
++ VCOS_LOG_INFO,
++ "Rcvd Msg %s(%u) from %c%c%c%c s:%d d:%d len:%d",
++ msg_type_str(type), type,
++ VCHIQ_FOURCC_AS_4CHARS(svc_fourcc),
++ remoteport, localport, size );
++ if (size > 0) {
++ vcos_log_dump_mem( &vchiq_core_msg_log_category,
++ "Rcvd", 0, header->data,
++ vcos_min( 64, size ));
++ }
++ }
++
++ if (((unsigned int)header & VCHIQ_SLOT_MASK) + calc_stride(size) > VCHIQ_SLOT_SIZE)
++ {
++ vcos_log_error("header %x (msgid %x) - size %x too big for slot",
++ (unsigned int)header, (unsigned int)msgid, (unsigned int)size);
++ vcos_assert(0);
++ }
++
++ switch (type) {
++ case VCHIQ_MSG_OPEN:
++ vcos_assert(VCHIQ_MSG_DSTPORT(msgid) == 0);
++ if (vcos_verify(size == sizeof(VCHIQ_OPEN_PAYLOAD_T))) {
++ const VCHIQ_OPEN_PAYLOAD_T *payload = (VCHIQ_OPEN_PAYLOAD_T *)header->data;
++ unsigned int fourcc;
++
++ fourcc = payload->fourcc;
++ vcos_log_info("%d: prs OPEN@%x (%d->'%c%c%c%c')",
++ state->id, (unsigned int)header,
++ localport,
++ VCHIQ_FOURCC_AS_4CHARS(fourcc));
++
++ service = get_listening_service(state, fourcc);
++
++ if (service)
++ {
++ /* A matching service exists */
++ short version = payload->version;
++ short version_min = payload->version_min;
++ if ((service->version < version_min) ||
++ (version < service->version_min))
++ {
++ /* Version mismatch */
++ vcos_log_error("%d: service %d (%c%c%c%c) version mismatch -"
++ " local (%d, min %d) vs. remote (%d, min %d)",
++ state->id, service->localport,
++ VCHIQ_FOURCC_AS_4CHARS(fourcc),
++ service->version, service->version_min,
++ version, version_min);
++ goto fail_open;
++ }
++ if (service->srvstate == VCHIQ_SRVSTATE_LISTENING)
++ {
++ /* Acknowledge the OPEN */
++ if (queue_message(state, NULL,
++ VCHIQ_MAKE_MSG(VCHIQ_MSG_OPENACK, service->localport, remoteport),
++ NULL, 0, 0, 0) == VCHIQ_RETRY)
++ return; /* Bail out if not ready */
++
++ /* The service is now open */
++ vchiq_set_service_state(service, VCHIQ_SRVSTATE_OPEN);
++ }
++
++ service->remoteport = remoteport;
++ service->client_id = ((int *)header->data)[1];
++ if (make_service_callback(service, VCHIQ_SERVICE_OPENED,
++ NULL, NULL) == VCHIQ_RETRY)
++ {
++ /* Bail out if not ready */
++ service->remoteport = VCHIQ_PORT_FREE;
++ return;
++ }
++
++ /* Break out, and skip the failure handling */
++ break;
++ }
++ }
++ fail_open:
++ /* No available service, or an invalid request - send a CLOSE */
++ if (queue_message(state, NULL,
++ VCHIQ_MAKE_MSG(VCHIQ_MSG_CLOSE, 0, VCHIQ_MSG_SRCPORT(msgid)),
++ NULL, 0, 0, 0) == VCHIQ_RETRY)
++ return; /* Bail out if not ready */
++ break;
++ case VCHIQ_MSG_OPENACK:
++ {
++ vcos_log_info("%d: prs OPENACK@%x (%d->%d)",
++ state->id, (unsigned int)header,
++ remoteport, localport);
++ if (service->srvstate == VCHIQ_SRVSTATE_OPENING) {
++ service->remoteport = remoteport;
++ vchiq_set_service_state(service,
++ VCHIQ_SRVSTATE_OPEN);
++ vcos_event_signal(&service->remove_event);
++ }
++ }
++ break;
++ case VCHIQ_MSG_CLOSE:
++ {
++ vcos_assert(size == 0); /* There should be no data */
++
++ vcos_log_info("%d: prs CLOSE@%x (%d->%d)",
++ state->id, (unsigned int)header,
++ remoteport, localport);
++
++ if ((service->remoteport != remoteport) &&
++ VCHIQ_PORT_IS_VALID(service->remoteport)) {
++ /* This could be from a client which hadn't yet received
++ the OPENACK - look for the connected service */
++ service = get_connected_service(state, remoteport);
++ if (!service)
++ break;
++ }
++
++ if (vchiq_close_service_internal(service,
++ 1/*close_recvd*/) == VCHIQ_RETRY)
++ return; /* Bail out if not ready */
++
++ if (vcos_is_log_enabled( &vchiq_core_msg_log_category, VCOS_LOG_INFO))
++ {
++ vcos_log_impl( &vchiq_core_msg_log_category,
++ VCOS_LOG_INFO,
++ "Close Service %c%c%c%c s:%u d:%d",
++ VCHIQ_FOURCC_AS_4CHARS(service->base.fourcc),
++ service->localport,
++ service->remoteport );
++ }
++ }
++ break;
++ case VCHIQ_MSG_DATA:
++ {
++ vcos_log_trace("%d: prs DATA@%x,%x (%d->%d)",
++ state->id, (unsigned int)header, size,
++ remoteport, localport);
++
++ if ((service->remoteport == remoteport)
++ && (service->srvstate ==
++ VCHIQ_SRVSTATE_OPEN)) {
++ header->msgid = msgid | VCHIQ_MSGID_CLAIMED;
++ claim_slot(state->rx_info);
++ DEBUG_TRACE(PARSE_LINE);
++ if (make_service_callback(service,
++ VCHIQ_MESSAGE_AVAILABLE, header,
++ NULL) == VCHIQ_RETRY)
++ {
++ DEBUG_TRACE(PARSE_LINE);
++ return; /* Bail out if not ready */
++ }
++ VCHIQ_SERVICE_STATS_INC(service, ctrl_rx_count);
++ VCHIQ_SERVICE_STATS_ADD(service, ctrl_rx_bytes, size);
++ }
++ else
++ {
++ VCHIQ_STATS_INC(state, error_count);
++ }
++ }
++ break;
++ case VCHIQ_MSG_CONNECT:
++ vcos_log_info("%d: prs CONNECT@%x",
++ state->id, (unsigned int)header);
++ vcos_event_signal(&state->connect);
++ break;
++ case VCHIQ_MSG_BULK_RX:
++ case VCHIQ_MSG_BULK_TX:
++ {
++ VCHIQ_BULK_QUEUE_T *queue;
++ vcos_assert(state->is_master);
++ queue = (type == VCHIQ_MSG_BULK_RX) ?
++ &service->bulk_tx : &service->bulk_rx;
++ if ((service->remoteport == remoteport)
++ && (service->srvstate ==
++ VCHIQ_SRVSTATE_OPEN))
++ {
++ VCHIQ_BULK_T *bulk;
++ int resolved;
++
++ vcos_assert(queue->remote_insert < queue->remove +
++ VCHIQ_NUM_SERVICE_BULKS);
++ bulk = &queue->bulks[BULK_INDEX(queue->remote_insert)];
++ bulk->remote_data = (void *)((int *)header->data)[0];
++ bulk->remote_size = ((int *)header->data)[1];
++
++ vcos_log_info("%d: prs %s@%x (%d->%d) %x@%x",
++ state->id, msg_type_str(type),
++ (unsigned int)header,
++ remoteport, localport,
++ bulk->remote_size,
++ (unsigned int)bulk->remote_data);
++
++ queue->remote_insert++;
++
++ if (state->conn_state != VCHIQ_CONNSTATE_CONNECTED)
++ break;
++
++ DEBUG_TRACE(PARSE_LINE);
++ if (vcos_mutex_lock(&service->bulk_mutex) != VCOS_SUCCESS)
++ {
++ DEBUG_TRACE(PARSE_LINE);
++ return;
++ }
++ DEBUG_TRACE(PARSE_LINE);
++ resolved = resolve_bulks(service, queue);
++ vcos_mutex_unlock(&service->bulk_mutex);
++ if (resolved)
++ notify_bulks(service, queue);
++ }
++ }
++ break;
++ case VCHIQ_MSG_BULK_RX_DONE:
++ case VCHIQ_MSG_BULK_TX_DONE:
++ {
++ vcos_assert(!state->is_master);
++ if ((service->remoteport == remoteport)
++ && (service->srvstate !=
++ VCHIQ_SRVSTATE_FREE)) {
++ VCHIQ_BULK_QUEUE_T *queue;
++ VCHIQ_BULK_T *bulk;
++
++ queue = (type == VCHIQ_MSG_BULK_RX_DONE) ?
++ &service->bulk_rx : &service->bulk_tx;
++
++ bulk = &queue->bulks[BULK_INDEX(queue->process)];
++ bulk->actual = *(int *)header->data;
++
++ vcos_log_info("%d: prs %s@%x (%d->%d) %x@%x",
++ state->id, msg_type_str(type),
++ (unsigned int)header,
++ remoteport, localport,
++ bulk->actual, (unsigned int)bulk->data);
++
++ vcos_log_trace("%d: prs:%d %cx li=%x ri=%x p=%x",
++ state->id, localport,
++ (type == VCHIQ_MSG_BULK_RX_DONE) ? 'r' : 't',
++ queue->local_insert,
++ queue->remote_insert, queue->process);
++
++ DEBUG_TRACE(PARSE_LINE);
++ if (vcos_mutex_lock(&service->bulk_mutex) != VCOS_SUCCESS)
++ {
++ DEBUG_TRACE(PARSE_LINE);
++ return;
++ }
++ DEBUG_TRACE(PARSE_LINE);
++ vcos_assert(queue->process != queue->local_insert);
++ vchiq_complete_bulk(bulk);
++ queue->process++;
++ vcos_mutex_unlock(&service->bulk_mutex);
++ DEBUG_TRACE(PARSE_LINE);
++ notify_bulks(service, queue);
++ DEBUG_TRACE(PARSE_LINE);
++ }
++ }
++ break;
++ case VCHIQ_MSG_PADDING:
++ vcos_log_trace("%d: prs PADDING@%x,%x",
++ state->id, (unsigned int)header, size);
++ break;
++ case VCHIQ_MSG_PAUSE:
++ /* If initiated, signal the application thread */
++ vcos_log_trace("%d: prs PAUSE@%x,%x",
++ state->id, (unsigned int)header, size);
++ if (state->conn_state != VCHIQ_CONNSTATE_PAUSE_SENT)
++ {
++ /* Send a PAUSE in response */
++ if (queue_message(state, NULL,
++ VCHIQ_MAKE_MSG(VCHIQ_MSG_PAUSE, 0, 0),
++ NULL, 0, 0, 0) == VCHIQ_RETRY)
++ return; /* Bail out if not ready */
++ if (state->is_master)
++ pause_bulks(state);
++ }
++ /* At this point slot_mutex is held */
++ vchiq_set_conn_state(state, VCHIQ_CONNSTATE_PAUSED);
++ vchiq_platform_paused(state);
++ break;
++ case VCHIQ_MSG_RESUME:
++ vcos_log_trace("%d: prs RESUME@%x,%x",
++ state->id, (unsigned int)header, size);
++ /* Release the slot mutex */
++ vcos_mutex_unlock(&state->slot_mutex);
++ if (state->is_master)
++ resume_bulks(state);
++ vchiq_set_conn_state(state, VCHIQ_CONNSTATE_CONNECTED);
++ vchiq_platform_resumed(state);
++ break;
++ default:
++ vcos_log_error("%d: prs invalid msgid %x@%x,%x",
++ state->id, msgid, (unsigned int)header, size);
++ vcos_assert(0);
++ break;
++ }
++
++ skip_message:
++ state->rx_pos += calc_stride(size);
++
++ DEBUG_TRACE(PARSE_LINE);
++ /* Perform some housekeeping when the end of the slot is reached. */
++ if ((state->rx_pos & VCHIQ_SLOT_MASK) == 0)
++ {
++ /* Remove the extra reference count. */
++ release_slot(state, state->rx_info);
++ state->rx_data = NULL;
++ }
++ }
++}
++
++/* Called by the slot handler thread */
++static void *
++slot_handler_func(void *v)
++{
++ VCHIQ_STATE_T *state = (VCHIQ_STATE_T *) v;
++ VCHIQ_SHARED_STATE_T *local = state->local;
++ DEBUG_INITIALISE(local)
++
++ while (1) {
++ DEBUG_COUNT(SLOT_HANDLER_COUNT);
++ DEBUG_TRACE(SLOT_HANDLER_LINE);
++ remote_event_wait(&local->trigger);
++
++ vcos_rmb();
++
++ DEBUG_TRACE(SLOT_HANDLER_LINE);
++ if (state->poll_needed)
++ {
++ state->poll_needed = 0;
++
++ /* Handle service polling and other rare conditions here out
++ of the mainline code */
++ switch (state->conn_state)
++ {
++ case VCHIQ_CONNSTATE_CONNECTED:
++ /* Poll the services as requested */
++ poll_services(state);
++ break;
++
++ case VCHIQ_CONNSTATE_PAUSING:
++ if (queue_message(state, NULL,
++ VCHIQ_MAKE_MSG(VCHIQ_MSG_PAUSE, 0, 0), NULL, 0, 0, 0)
++ != VCHIQ_RETRY)
++ {
++ if (state->is_master)
++ pause_bulks(state);
++ vchiq_set_conn_state(state, VCHIQ_CONNSTATE_PAUSE_SENT);
++ }
++ else
++ {
++ state->poll_needed = 1; /* Retry later */
++ }
++ break;
++
++ case VCHIQ_CONNSTATE_RESUMING:
++ if (queue_message(state, NULL,
++ VCHIQ_MAKE_MSG(VCHIQ_MSG_RESUME, 0, 0), NULL, 0, 0, 0)
++ != VCHIQ_RETRY)
++ {
++ if (state->is_master)
++ resume_bulks(state);
++ vchiq_set_conn_state(state, VCHIQ_CONNSTATE_CONNECTED);
++ vchiq_platform_resumed(state);
++ }
++ else
++ {
++ /* This should really be impossible, since the PAUSE should
++ have flushed through outstanding messages. */
++ vcos_log_error("Failed to send RESUME message");
++ vcos_demand(0);
++ }
++ break;
++ default:
++ break;
++ }
++ }
++
++ DEBUG_TRACE(SLOT_HANDLER_LINE);
++ parse_rx_slots(state);
++ }
++ return NULL;
++}
++
++extern VCHIQ_STATUS_T
++vchiq_platform_suspend(VCHIQ_STATE_T *state);
++
++/* Called by the recycle thread */
++static void *
++recycle_func(void *v)
++{
++ VCHIQ_STATE_T *state = (VCHIQ_STATE_T *) v;
++ VCHIQ_SHARED_STATE_T *local = state->local;
++
++ while (1) {
++ remote_event_wait(&local->recycle);
++
++ vcos_mutex_lock(&state->slot_mutex);
++
++ process_free_queue(state);
++
++ vcos_mutex_unlock(&state->slot_mutex);
++ }
++ return NULL;
++}
++
++/* Called by the lp thread */
++static void *
++lp_func(void *v)
++{
++ VCHIQ_STATE_T *state = (VCHIQ_STATE_T *) v;
++
++ while (1) {
++ vcos_event_wait(&state->lp_evt);
++ vcos_mutex_lock(&state->use_count_mutex);
++ if (state->videocore_use_count == 0)
++ {
++ vchiq_platform_suspend(state);
++ }
++ vcos_mutex_unlock(&state->use_count_mutex);
++ }
++ return NULL;
++}
++
++static void
++init_bulk_queue(VCHIQ_BULK_QUEUE_T *queue)
++{
++ queue->local_insert = 0;
++ queue->remote_insert = 0;
++ queue->process = 0;
++ queue->remote_notify = 0;
++ queue->remove = 0;
++}
++
++VCHIQ_SLOT_ZERO_T *
++vchiq_init_slots(void *mem_base, int mem_size)
++{
++ int mem_align = (VCHIQ_SLOT_SIZE - (int)mem_base) & VCHIQ_SLOT_MASK;
++ VCHIQ_SLOT_ZERO_T *slot_zero = (VCHIQ_SLOT_ZERO_T *)((char *)mem_base + mem_align);
++ int num_slots = (mem_size - mem_align)/VCHIQ_SLOT_SIZE;
++ int first_data_slot = VCHIQ_SLOT_ZERO_SLOTS;
++
++ /* Ensure there is enough memory to run an absolutely minimum system */
++ num_slots -= first_data_slot;
++
++ if (num_slots < 4)
++ {
++ vcos_log_error("vchiq_init_slots - insufficient memory %x bytes", mem_size);
++ return NULL;
++ }
++
++ memset(slot_zero, 0, sizeof(VCHIQ_SLOT_ZERO_T));
++
++ slot_zero->magic = VCHIQ_MAGIC;
++ slot_zero->version = VCHIQ_VERSION;
++ slot_zero->version_min = VCHIQ_VERSION_MIN;
++ slot_zero->slot_zero_size = sizeof(VCHIQ_SLOT_ZERO_T);
++ slot_zero->slot_size = VCHIQ_SLOT_SIZE;
++ slot_zero->max_slots = VCHIQ_MAX_SLOTS;
++ slot_zero->max_slots_per_side = VCHIQ_MAX_SLOTS_PER_SIDE;
++
++ slot_zero->master.slot_first = first_data_slot;
++ slot_zero->slave.slot_first = first_data_slot + (num_slots/2);
++ slot_zero->master.slot_last = slot_zero->slave.slot_first - 1;
++ slot_zero->slave.slot_last = first_data_slot + num_slots - 1;
++
++ return slot_zero;
++}
++
++VCHIQ_STATUS_T
++vchiq_init_state(VCHIQ_STATE_T *state, VCHIQ_SLOT_ZERO_T *slot_zero, int is_master)
++{
++ VCHIQ_SHARED_STATE_T *local;
++ VCHIQ_SHARED_STATE_T *remote;
++ VCOS_THREAD_ATTR_T attrs;
++ char threadname[10];
++ static int id = 0;
++ int i;
++
++ vcos_log_set_level(&vchiq_core_log_category, vchiq_default_core_log_level);
++ vcos_log_set_level(&vchiq_core_msg_log_category, vchiq_default_core_msg_log_level);
++ vcos_log_register("vchiq_core", &vchiq_core_log_category);
++ vcos_log_register("vchiq_core_msg", &vchiq_core_msg_log_category);
++
++ vcos_log_warn( "%s: slot_zero = 0x%08lx, is_master = %d\n", __func__, (unsigned long)slot_zero, is_master );
++
++ /* Check the input configuration */
++
++ if (slot_zero->magic != VCHIQ_MAGIC)
++ {
++ vcos_log_error("slot_zero=%x: magic=%x (expected %x)",
++ (unsigned int)slot_zero, slot_zero->magic, VCHIQ_MAGIC);
++ return VCHIQ_ERROR;
++ }
++
++ if (slot_zero->version < VCHIQ_VERSION_MIN)
++ {
++ vcos_log_error("slot_zero=%x: peer_version=%x (minimum %x)",
++ (unsigned int)slot_zero, slot_zero->version, VCHIQ_VERSION_MIN);
++ return VCHIQ_ERROR;
++ }
++
++ if (VCHIQ_VERSION < slot_zero->version_min)
++ {
++ vcos_log_error("slot_zero=%x: version=%x (peer minimum %x)",
++ (unsigned int)slot_zero, VCHIQ_VERSION, slot_zero->version_min);
++ return VCHIQ_ERROR;
++ }
++
++ if (slot_zero->slot_zero_size != sizeof(VCHIQ_SLOT_ZERO_T))
++ {
++ vcos_log_error("slot_zero=%x: slot_zero_size=%x (expected %x)",
++ (unsigned int)slot_zero, slot_zero->slot_zero_size, sizeof(VCHIQ_SLOT_ZERO_T));
++ return VCHIQ_ERROR;
++ }
++
++ if (slot_zero->slot_size != VCHIQ_SLOT_SIZE)
++ {
++ vcos_log_error("slot_zero=%x: slot_size=%d (expected %d",
++ (unsigned int)slot_zero, slot_zero->slot_size, VCHIQ_SLOT_SIZE);
++ return VCHIQ_ERROR;
++ }
++
++ if (slot_zero->max_slots != VCHIQ_MAX_SLOTS)
++ {
++ vcos_log_error("slot_zero=%x: max_slots=%d (expected %d)",
++ (unsigned int)slot_zero, slot_zero->max_slots, VCHIQ_MAX_SLOTS);
++ return VCHIQ_ERROR;
++ }
++
++ if (slot_zero->max_slots_per_side != VCHIQ_MAX_SLOTS_PER_SIDE)
++ {
++ vcos_log_error("slot_zero=%x: max_slots_per_side=%d (expected %d)",
++ (unsigned int)slot_zero, slot_zero->max_slots_per_side,
++ VCHIQ_MAX_SLOTS_PER_SIDE);
++ return VCHIQ_ERROR;
++ }
++
++ if (is_master)
++ {
++ local = &slot_zero->master;
++ remote = &slot_zero->slave;
++ }
++ else
++ {
++ local = &slot_zero->slave;
++ remote = &slot_zero->master;
++ }
++
++ if (local->initialised)
++ {
++ if (remote->initialised)
++ vcos_log_error("vchiq: FATAL: local state has already been initialised");
++ else
++ vcos_log_error("vchiq: FATAL: master/slave mismatch - two %ss", is_master ? "master" : "slave");
++ return VCHIQ_ERROR;
++ }
++
++ memset(state, 0, sizeof(VCHIQ_STATE_T));
++ state->id = id++;
++ state->is_master = is_master;
++
++ /*
++ initialize shared state pointers
++ */
++
++ state->local = local;
++ state->remote = remote;
++ state->slot_data = (VCHIQ_SLOT_T *)slot_zero;
++
++ /*
++ initialize events and mutexes
++ */
++
++ vcos_event_create(&state->connect, "v.connect");
++ vcos_mutex_create(&state->mutex, "v.mutex");
++ vcos_event_create(&state->trigger_event, "v.trigger_event");
++ vcos_event_create(&state->recycle_event, "v.recycle_event");
++
++ vcos_mutex_create(&state->slot_mutex, "v.slot_mutex");
++ vcos_mutex_create(&state->recycle_mutex, "v.recycle_mutex");
++ vcos_mutex_create(&state->use_count_mutex, "v.use_count_mutex");
++ vcos_mutex_create(&state->suspend_resume_mutex, "v.susp_res_mutex");
++
++ vcos_event_create(&state->slot_available_event, "v.slot_available_event");
++ vcos_event_create(&state->slot_remove_event, "v.slot_remove_event");
++
++ state->slot_queue_available = 0;
++
++ for (i = 0; i < VCHIQ_MAX_SERVICES; i++)
++ {
++ VCHIQ_SERVICE_QUOTA_T *service_quota = &state->service_quotas[i];
++ vcos_event_create(&service_quota->quota_event, "v.quota_event");
++ }
++
++ for (i = local->slot_first; i <= local->slot_last; i++)
++ {
++ local->slot_queue[state->slot_queue_available++] = i;
++ }
++
++ state->default_slot_quota = state->slot_queue_available/2;
++
++ local->trigger.event = &state->trigger_event;
++ remote_event_create(&local->trigger);
++ local->tx_pos = 0;
++
++ local->recycle.event = &state->recycle_event;
++ remote_event_create(&local->recycle);
++ local->slot_queue_recycle = state->slot_queue_available;
++
++ vcos_event_create(&state->lp_evt, "LP_EVT");
++
++ local->debug[DEBUG_ENTRIES] = DEBUG_MAX;
++
++ /*
++ bring up slot handler thread
++ */
++
++ vcos_thread_attr_init(&attrs);
++ vcos_thread_attr_setstacksize(&attrs, VCHIQ_SLOT_HANDLER_STACK);
++ vcos_thread_attr_setpriority(&attrs, VCOS_THREAD_PRI_REALTIME);
++ vcos_snprintf(threadname, sizeof(threadname), "VCHIQ-%d", state->id);
++ if (vcos_thread_create(&state->slot_handler_thread, threadname,
++ &attrs, slot_handler_func, state) != VCOS_SUCCESS)
++ return VCHIQ_ERROR;
++
++ vcos_thread_attr_init(&attrs);
++ vcos_thread_attr_setstacksize(&attrs, VCHIQ_SLOT_HANDLER_STACK);
++ vcos_thread_attr_setpriority(&attrs, VCOS_THREAD_PRI_REALTIME);
++ vcos_snprintf(threadname, sizeof(threadname), "VCHIQr-%d", state->id);
++ if (vcos_thread_create(&state->recycle_thread, threadname,
++ &attrs, recycle_func, state) != VCOS_SUCCESS)
++ return VCHIQ_ERROR;
++
++ vcos_thread_attr_init(&attrs);
++ vcos_thread_attr_setstacksize(&attrs, VCHIQ_SLOT_HANDLER_STACK);
++ vcos_thread_attr_setpriority(&attrs, VCOS_THREAD_PRI_LOWEST);
++ vcos_snprintf(threadname, sizeof(threadname), "VCHIQl-%d", state->id);
++ if (vcos_thread_create(&state->lp_thread, threadname,
++ &attrs, lp_func, state) != VCOS_SUCCESS)
++ return VCHIQ_ERROR;
++
++ /* Indicate readiness to the other side */
++ local->initialised = 1;
++
++ return VCHIQ_SUCCESS;
++}
++
++/* Called from application thread when a client or server service is created. */
++VCHIQ_SERVICE_T *
++vchiq_add_service_internal(VCHIQ_STATE_T *state,
++ const VCHIQ_SERVICE_PARAMS_T *params, int srvstate,
++ VCHIQ_INSTANCE_T instance)
++{
++ VCHIQ_SERVICE_T **pservice = NULL;
++ VCHIQ_SERVICE_T *service = NULL;
++ int i;
++
++ /* Prepare to use a previously unused service */
++ if (state->unused_service < VCHIQ_MAX_SERVICES)
++ {
++ pservice = &state->services[state->unused_service];
++ }
++
++ if (srvstate == VCHIQ_SRVSTATE_OPENING) {
++ for (i = 0; i < state->unused_service; i++) {
++ VCHIQ_SERVICE_T *srv = state->services[i];
++ if (!srv)
++ {
++ pservice = &state->services[i];
++ break;
++ }
++ if (srv->srvstate == VCHIQ_SRVSTATE_FREE) {
++ service = srv;
++ break;
++ }
++ }
++ } else {
++ for (i = (state->unused_service - 1); i >= 0; i--) {
++ VCHIQ_SERVICE_T *srv = state->services[i];
++ if (!srv)
++ pservice = &state->services[i];
++ else if (srv->srvstate == VCHIQ_SRVSTATE_FREE) {
++ service = srv;
++ } else if ((srv->public_fourcc == params->fourcc) &&
++ ((srv->instance != instance)
++ || (srv->base.callback != params->callback))) {
++ /* There is another server using this fourcc which doesn't match */
++ pservice = NULL;
++ service = NULL;
++ }
++ }
++ }
++
++ if (pservice && !service)
++ {
++ service = vcos_malloc(sizeof(VCHIQ_SERVICE_T), "VCHIQ service");
++ if (service)
++ {
++ service->srvstate = VCHIQ_SRVSTATE_FREE;
++ service->localport = (pservice - state->services);
++ vcos_event_create(&service->remove_event, "v.remove_event");
++ vcos_event_create(&service->bulk_remove_event, "v.bulk_remove_event");
++ vcos_mutex_create(&service->bulk_mutex, "v.bulk_mutex");
++ *pservice = service;
++ }
++ else
++ {
++ vcos_log_error("vchiq: Out of memory");
++ }
++ }
++
++ if (service) {
++ VCHIQ_SERVICE_QUOTA_T *service_quota =
++ &state->service_quotas[service->localport];
++ if (vcos_is_log_enabled( &vchiq_core_msg_log_category, VCOS_LOG_INFO)) {
++ vcos_log_impl( &vchiq_core_msg_log_category,
++ VCOS_LOG_INFO,
++ "%s Service %c%c%c%c SrcPort:%d",
++ ( srvstate == VCHIQ_SRVSTATE_OPENING )
++ ? "Open" : "Add",
++ VCHIQ_FOURCC_AS_4CHARS(params->fourcc),
++ service->localport );
++ }
++ service->state = state;
++ service->base.fourcc = params->fourcc;
++ service->base.callback = params->callback;
++ service->base.userdata = params->userdata;
++ service->version = params->version;
++ service->version_min = params->version_min;
++ vchiq_set_service_state(service, srvstate);
++ service->public_fourcc =
++ (srvstate ==
++ VCHIQ_SRVSTATE_OPENING) ? VCHIQ_FOURCC_INVALID : params->fourcc;
++ service->instance = instance;
++ service->remoteport = VCHIQ_PORT_FREE;
++ service->client_id = 0;
++ service->auto_close = 1;
++ service->service_use_count = 0;
++ init_bulk_queue(&service->bulk_tx);
++ init_bulk_queue(&service->bulk_rx);
++ service_quota->slot_quota = state->default_slot_quota;
++ if (service_quota->slot_use_count == 0)
++ service_quota->previous_tx_index =
++ SLOT_QUEUE_INDEX_FROM_POS(state->local_tx_pos) - 1;
++ memset(&service->stats, 0, sizeof(service->stats));
++ vcos_atomic_flags_create(&service->poll_flags);
++
++ /* Ensure the events are unsignalled */
++ while (vcos_event_try(&service->remove_event) == VCOS_SUCCESS)
++ continue;
++ while (vcos_event_try(&service_quota->quota_event) == VCOS_SUCCESS)
++ continue;
++
++ if (pservice == &state->services[state->unused_service])
++ state->unused_service++;
++ }
++
++ return service;
++}
++
++VCHIQ_STATUS_T
++vchiq_open_service_internal(VCHIQ_SERVICE_T *service, int client_id)
++{
++ VCHIQ_OPEN_PAYLOAD_T payload = {
++ service->base.fourcc,
++ client_id,
++ service->version,
++ service->version_min
++ };
++ VCHIQ_ELEMENT_T body = { &payload, sizeof(payload) };
++ VCHIQ_STATUS_T status = VCHIQ_SUCCESS;
++
++ service->client_id = client_id;
++ vchiq_use_service(&service->base);
++ status = queue_message(service->state, NULL,
++ VCHIQ_MAKE_MSG(VCHIQ_MSG_OPEN, service->localport, 0),
++ &body, 1, sizeof(payload), 1);
++ if (status == VCHIQ_SUCCESS) {
++ if (vcos_event_wait(&service->remove_event) != VCOS_SUCCESS) {
++ status = VCHIQ_RETRY;
++ vchiq_release_service(&service->base);
++ } else if (service->srvstate != VCHIQ_SRVSTATE_OPEN) {
++ vcos_log_info("%d: osi - srvstate = %d", service->state->id, service->srvstate);
++ vcos_assert(service->srvstate == VCHIQ_SRVSTATE_CLOSEWAIT);
++ status = VCHIQ_ERROR;
++ VCHIQ_SERVICE_STATS_INC(service, error_count);
++ vchiq_release_service(&service->base);
++ }
++ }
++ return status;
++}
++
++/* Called by the slot handler */
++VCHIQ_STATUS_T
++vchiq_close_service_internal(VCHIQ_SERVICE_T *service, int close_recvd)
++{
++ VCHIQ_STATE_T *state = service->state;
++ VCHIQ_STATUS_T status = VCHIQ_SUCCESS;
++
++ vcos_log_trace("%d: csi:%d (%s)",
++ service->state->id, service->localport,
++ srvstate_names[service->srvstate]);
++
++ switch (service->srvstate)
++ {
++ case VCHIQ_SRVSTATE_OPENING:
++ if (close_recvd)
++ {
++ /* The open was rejected - tell the user */
++ vchiq_set_service_state(service, VCHIQ_SRVSTATE_CLOSEWAIT);
++ vcos_event_signal(&service->remove_event);
++ }
++ else
++ {
++ /* Shutdown mid-open - let the other side know */
++ status = queue_message(state, NULL,
++ VCHIQ_MAKE_MSG
++ (VCHIQ_MSG_CLOSE,
++ service->localport,
++ VCHIQ_MSG_DSTPORT(service->remoteport)),
++ NULL, 0, 0, 0);
++
++ if (status == VCHIQ_SUCCESS)
++ vchiq_set_service_state(service, VCHIQ_SRVSTATE_CLOSESENT);
++ }
++ break;
++
++ case VCHIQ_SRVSTATE_OPEN:
++ if (state->is_master)
++ {
++ /* Abort any outstanding bulk transfers */
++ vcos_mutex_lock(&service->bulk_mutex);
++ abort_outstanding_bulks(service, &service->bulk_tx);
++ abort_outstanding_bulks(service, &service->bulk_rx);
++ status = notify_bulks(service, &service->bulk_tx);
++ if (status == VCHIQ_SUCCESS)
++ status = notify_bulks(service, &service->bulk_rx);
++ vcos_mutex_unlock(&service->bulk_mutex);
++ }
++
++ if (status == VCHIQ_SUCCESS)
++ status = queue_message(state, NULL,
++ VCHIQ_MAKE_MSG
++ (VCHIQ_MSG_CLOSE,
++ service->localport,
++ VCHIQ_MSG_DSTPORT(service->remoteport)),
++ NULL, 0, 0, 0);
++
++ if (status == VCHIQ_SUCCESS)
++ {
++ if (close_recvd)
++ vchiq_set_service_state(service, VCHIQ_SRVSTATE_CLOSING);
++ else
++ vchiq_set_service_state(service, VCHIQ_SRVSTATE_CLOSESENT);
++ }
++ break;
++
++ case VCHIQ_SRVSTATE_CLOSESENT:
++ vcos_assert(close_recvd);
++
++ if (!state->is_master)
++ {
++ /* Abort any outstanding bulk transfers */
++ vcos_mutex_lock(&service->bulk_mutex);
++ abort_outstanding_bulks(service, &service->bulk_tx);
++ abort_outstanding_bulks(service, &service->bulk_rx);
++ status = notify_bulks(service, &service->bulk_tx);
++ if (status == VCHIQ_SUCCESS)
++ status = notify_bulks(service, &service->bulk_rx);
++ vcos_mutex_unlock(&service->bulk_mutex);
++ }
++
++ if (status == VCHIQ_SUCCESS)
++ vchiq_set_service_state(service, VCHIQ_SRVSTATE_CLOSING);
++ break;
++
++ case VCHIQ_SRVSTATE_CLOSING:
++ /* We may come here after a retry */
++ vcos_assert(!close_recvd);
++ break;
++
++ default:
++ vcos_log_error("vchiq_close_service_internal(%d) called in state %s",
++ close_recvd, srvstate_names[service->srvstate]);
++ vcos_assert(0);
++ break;
++ }
++
++ if (service->srvstate == VCHIQ_SRVSTATE_CLOSING)
++ {
++ /* Complete the close process */
++ vchiq_release_service(&service->base);
++
++ service->client_id = 0;
++
++ /* Now tell the client that the services is closed */
++ if (service->instance)
++ {
++ int oldstate = service->srvstate;
++
++ /* Change the service state now for the benefit of the callback */
++ vchiq_set_service_state(service,
++ ((service->public_fourcc == VCHIQ_FOURCC_INVALID) ||
++ !service->auto_close) ?
++ VCHIQ_SRVSTATE_CLOSEWAIT :
++ VCHIQ_SRVSTATE_LISTENING);
++
++ status = make_service_callback(service, VCHIQ_SERVICE_CLOSED, NULL, NULL);
++
++ if (status == VCHIQ_RETRY)
++ {
++ /* Restore the old state, to be retried later */
++ vchiq_set_service_state(service, oldstate);
++ }
++ else
++ {
++ if (status == VCHIQ_ERROR) {
++ /* Signal an error (fatal, since the other end will probably have closed) */
++ vchiq_set_service_state(service, VCHIQ_SRVSTATE_OPEN);
++ }
++ }
++ }
++
++ if (status != VCHIQ_RETRY)
++ {
++ if (service->srvstate == VCHIQ_SRVSTATE_CLOSING)
++ vchiq_set_service_state(service, VCHIQ_SRVSTATE_CLOSEWAIT);
++ vcos_event_signal(&service->remove_event);
++ }
++ }
++
++ return status;
++}
++
++/* Called from the application process upon process death */
++void
++vchiq_terminate_service_internal(VCHIQ_SERVICE_T *service)
++{
++ VCHIQ_STATE_T *state = service->state;
++
++ vcos_log_info("%d: tsi - (%d<->%d)", state->id, service->localport, service->remoteport);
++
++ /* Disconnect from the instance, to prevent any callbacks */
++ service->instance = NULL;
++
++ /* Mark the service for termination by the slot handler */
++ request_poll(state, service, VCHIQ_POLL_TERMINATE);
++}
++
++/* Called from the application process upon process death, and from
++ vchiq_remove_service */
++void
++vchiq_free_service_internal(VCHIQ_SERVICE_T *service)
++{
++ VCHIQ_STATE_T *state = service->state;
++ int slot_last = state->remote->slot_last;
++ int i;
++
++ vcos_log_info("%d: fsi - (%d)", state->id, service->localport);
++
++ vcos_mutex_lock(&state->mutex);
++
++ /* Release any claimed messages */
++ for (i = state->remote->slot_first; i <= slot_last; i++)
++ {
++ VCHIQ_SLOT_INFO_T *slot_info = SLOT_INFO_FROM_INDEX(state, i);
++ if (slot_info->release_count != slot_info->use_count)
++ {
++ char *data = (char *)SLOT_DATA_FROM_INDEX(state, i);
++ int pos, end;
++
++ end = VCHIQ_SLOT_SIZE;
++ if (data == state->rx_data)
++ {
++ /* This buffer is still being read from - stop at the current read position */
++ end = state->rx_pos & VCHIQ_SLOT_MASK;
++ }
++
++ pos = 0;
++
++ while (pos < end)
++ {
++ VCHIQ_HEADER_T *header = (VCHIQ_HEADER_T *)(data + pos);
++ int msgid = header->msgid;
++ int port = VCHIQ_MSG_DSTPORT(msgid);
++ if (port == service->localport)
++ {
++ if (msgid & VCHIQ_MSGID_CLAIMED)
++ {
++ header->msgid = msgid & ~VCHIQ_MSGID_CLAIMED;
++ vcos_log_info(" fsi - hdr %x", (unsigned int)header);
++ release_slot(state, slot_info);
++ }
++ }
++ pos += calc_stride(header->size);
++ }
++ }
++ }
++
++ vcos_assert(state->services[service->localport] == service);
++ vchiq_set_service_state(service, VCHIQ_SRVSTATE_FREE);
++ state->services[service->localport] = NULL;
++ vcos_free(service);
++ vcos_mutex_unlock(&state->mutex);
++}
++
++VCHIQ_STATUS_T
++vchiq_connect_internal(VCHIQ_STATE_T *state, VCHIQ_INSTANCE_T instance)
++{
++ int i;
++
++ /* Find all services registered to this client and enable them. */
++ for (i = 0; i < state->unused_service; i++)
++ {
++ VCHIQ_SERVICE_T *service = state->services[i];
++ if (service && (service->instance == instance)) {
++ if (service->srvstate == VCHIQ_SRVSTATE_HIDDEN)
++ vchiq_set_service_state(service,
++ VCHIQ_SRVSTATE_LISTENING);
++ }
++ }
++
++ if (state->conn_state == VCHIQ_CONNSTATE_DISCONNECTED) {
++ if (queue_message(state, NULL,
++ VCHIQ_MAKE_MSG(VCHIQ_MSG_CONNECT, 0, 0), NULL, 0,
++ 0, 1) == VCHIQ_RETRY)
++ return VCHIQ_RETRY;
++ vcos_event_wait(&state->connect);
++
++ vchiq_set_conn_state(state, VCHIQ_CONNSTATE_CONNECTED);
++ }
++
++ return VCHIQ_SUCCESS;
++}
++
++VCHIQ_STATUS_T
++vchiq_shutdown_internal(VCHIQ_STATE_T *state, VCHIQ_INSTANCE_T instance)
++{
++ VCHIQ_STATUS_T status = VCHIQ_SUCCESS;
++ int i;
++
++ /* Find all services registered to this client and close them. */
++ for (i = 0; i < state->unused_service; i++)
++ {
++ VCHIQ_SERVICE_T *service = state->services[i];
++ if (service && (service->instance == instance) &&
++ ((service->srvstate == VCHIQ_SRVSTATE_OPEN) ||
++ (service->srvstate == VCHIQ_SRVSTATE_LISTENING)))
++ {
++ status = vchiq_remove_service(&service->base);
++ if (status != VCHIQ_SUCCESS)
++ break;
++ }
++ }
++
++ return status;
++}
++
++VCHIQ_STATUS_T
++vchiq_pause_internal(VCHIQ_STATE_T *state)
++{
++ VCHIQ_STATUS_T status = VCHIQ_SUCCESS;
++
++ switch (state->conn_state)
++ {
++ case VCHIQ_CONNSTATE_CONNECTED:
++ /* Request a pause */
++ vchiq_set_conn_state(state, VCHIQ_CONNSTATE_PAUSING);
++ request_poll(state, NULL, 0);
++ break;
++ case VCHIQ_CONNSTATE_PAUSED:
++ break;
++ default:
++ status = VCHIQ_ERROR;
++ VCHIQ_STATS_INC(state, error_count);
++ break;
++ }
++
++ return status;
++}
++
++VCHIQ_STATUS_T
++vchiq_resume_internal(VCHIQ_STATE_T *state)
++{
++ VCHIQ_STATUS_T status = VCHIQ_SUCCESS;
++
++ if (state->conn_state == VCHIQ_CONNSTATE_PAUSED)
++ {
++ vchiq_set_conn_state(state, VCHIQ_CONNSTATE_RESUMING);
++ request_poll(state, NULL, 0);
++ }
++ else
++ {
++ status = VCHIQ_ERROR;
++ VCHIQ_STATS_INC(state, error_count);
++ }
++
++ return status;
++}
++
++VCHIQ_STATUS_T
++vchiq_close_service(VCHIQ_SERVICE_HANDLE_T handle)
++{
++ /* Unregister the service */
++ VCHIQ_SERVICE_T *service = (VCHIQ_SERVICE_T *) handle;
++ VCHIQ_STATUS_T status = VCHIQ_ERROR;
++
++ if (service == NULL)
++ return VCHIQ_ERROR;
++
++ vcos_log_info("%d: close_service:%d", service->state->id, service->localport);
++
++ if (service->public_fourcc != VCHIQ_FOURCC_INVALID)
++ {
++ if (service->srvstate == VCHIQ_SRVSTATE_CLOSEWAIT)
++ {
++ /* This is a non-auto-close server */
++ vchiq_set_service_state(service, VCHIQ_SRVSTATE_LISTENING);
++ status = VCHIQ_SUCCESS;
++ }
++ }
++ else
++ {
++ /* For clients, make it an alias of vchiq_remove_service */
++ status = vchiq_remove_service(handle);
++ }
++
++ return status;
++}
++
++VCHIQ_STATUS_T
++vchiq_remove_service(VCHIQ_SERVICE_HANDLE_T handle)
++{
++ /* Unregister the service */
++ VCHIQ_SERVICE_T *service = (VCHIQ_SERVICE_T *) handle;
++ VCHIQ_STATUS_T status = VCHIQ_SUCCESS;
++
++ if (service == NULL)
++ return VCHIQ_ERROR;
++
++ vcos_log_info("%d: remove_service:%d", service->state->id, service->localport);
++
++ switch (service->srvstate)
++ {
++ case VCHIQ_SRVSTATE_OPENING:
++ case VCHIQ_SRVSTATE_OPEN:
++ /* Mark the service for termination by the slot handler */
++ request_poll(service->state, service, VCHIQ_POLL_TERMINATE);
++
++ /* Drop through... */
++ case VCHIQ_SRVSTATE_CLOSESENT:
++ case VCHIQ_SRVSTATE_CLOSING:
++ while ((service->srvstate != VCHIQ_SRVSTATE_CLOSEWAIT) &&
++ (service->srvstate != VCHIQ_SRVSTATE_LISTENING))
++ {
++ if (vcos_event_wait(&service->remove_event) != VCOS_SUCCESS) {
++ status = VCHIQ_RETRY;
++ break;
++ }
++ }
++ break;
++
++ default:
++ break;
++ }
++
++ if (status == VCHIQ_SUCCESS) {
++ if (service->srvstate == VCHIQ_SRVSTATE_OPEN)
++ status = VCHIQ_ERROR;
++ else
++ {
++ service->instance = NULL;
++ vchiq_free_service_internal(service);
++ }
++ }
++
++ return status;
++}
++
++
++VCHIQ_STATUS_T
++vchiq_bulk_transfer(VCHIQ_SERVICE_T *service,
++ VCHI_MEM_HANDLE_T memhandle, void *offset, int size, void *userdata,
++ VCHIQ_BULK_MODE_T mode, VCHIQ_BULK_DIR_T dir)
++{
++ VCHIQ_BULK_QUEUE_T *queue = (dir == VCHIQ_BULK_TRANSMIT) ?
++ &service->bulk_tx : &service->bulk_rx;
++ VCHIQ_BULK_T *bulk;
++ VCHIQ_STATE_T *state;
++ BULK_WAITER_T bulk_waiter;
++ const char dir_char = (dir == VCHIQ_BULK_TRANSMIT) ? 't' : 'r';
++ const int dir_msgtype = (dir == VCHIQ_BULK_TRANSMIT) ? VCHIQ_MSG_BULK_TX : VCHIQ_MSG_BULK_RX;
++ VCHIQ_STATUS_T status = VCHIQ_ERROR;
++
++ if ((service == NULL) ||
++ ((memhandle == VCHI_MEM_HANDLE_INVALID) && (offset == NULL)))
++ return VCHIQ_ERROR;
++
++ state = service->state;
++
++ if (service->srvstate != VCHIQ_SRVSTATE_OPEN)
++ return VCHIQ_ERROR; /* Must be connected */
++
++ if (vcos_mutex_lock(&service->bulk_mutex) != VCOS_SUCCESS)
++ return VCHIQ_RETRY;
++
++ if (queue->local_insert == queue->remove + VCHIQ_NUM_SERVICE_BULKS)
++ {
++ VCHIQ_SERVICE_STATS_INC(service, bulk_stalls);
++ do {
++ vcos_mutex_unlock(&service->bulk_mutex);
++ if (vcos_event_wait(&service->bulk_remove_event) != VCOS_SUCCESS)
++ return VCHIQ_RETRY;
++ if (vcos_mutex_lock(&service->bulk_mutex) != VCOS_SUCCESS)
++ return VCHIQ_RETRY;
++ } while (queue->local_insert == queue->remove + VCHIQ_NUM_SERVICE_BULKS);
++ }
++
++ bulk = &queue->bulks[BULK_INDEX(queue->local_insert)];
++
++ if (mode == VCHIQ_BULK_MODE_BLOCKING)
++ {
++ vcos_event_create(&bulk_waiter.event, "bulk_waiter");
++ bulk_waiter.actual = 0;
++ userdata = &bulk_waiter;
++ }
++
++ bulk->mode = mode;
++ bulk->dir = dir;
++ bulk->userdata = userdata;
++ bulk->size = size;
++ bulk->actual = VCHIQ_BULK_ACTUAL_ABORTED;
++
++ if (vchiq_prepare_bulk_data(bulk, memhandle, offset, size, dir) != VCHIQ_SUCCESS)
++ {
++ goto error_exit;
++ }
++
++ vcos_log_info("%d: bt (%d->%d) %cx %x@%x %x", state->id,
++ service->localport, service->remoteport, dir_char,
++ size, (unsigned int)bulk->data, (unsigned int)userdata);
++
++ if (state->is_master)
++ {
++ queue->local_insert++;
++ if (resolve_bulks(service, queue))
++ request_poll(state, service, (dir == VCHIQ_BULK_TRANSMIT) ?
++ VCHIQ_POLL_TXNOTIFY : VCHIQ_POLL_RXNOTIFY);
++ }
++ else
++ {
++ int payload[2] = { (int)bulk->data, bulk->size };
++ VCHIQ_ELEMENT_T element = { payload, sizeof(payload) };
++
++ if (queue_message(state, NULL,
++ VCHIQ_MAKE_MSG(dir_msgtype,
++ service->localport, service->remoteport),
++ &element, 1, sizeof(payload), 1) != VCHIQ_SUCCESS)
++ {
++ vchiq_complete_bulk(bulk);
++ goto error_exit;
++ }
++ queue->local_insert++;
++ queue->remote_insert++;
++ }
++
++ vcos_mutex_unlock(&service->bulk_mutex);
++
++ vcos_log_trace("%d: bt:%d %cx li=%x ri=%x p=%x", state->id,
++ service->localport, dir_char,
++ queue->local_insert, queue->remote_insert, queue->process);
++
++ status = VCHIQ_SUCCESS;
++
++ if (mode == VCHIQ_BULK_MODE_BLOCKING)
++ {
++ if (vcos_event_wait(&bulk_waiter.event) != VCOS_SUCCESS)
++ {
++ vcos_log_info("bulk wait interrupted");
++ /* Stop notify_bulks signalling a non-existent waiter */
++ bulk->userdata = NULL;
++ status = VCHIQ_ERROR;
++ }
++ else if (bulk_waiter.actual == VCHIQ_BULK_ACTUAL_ABORTED)
++ status = VCHIQ_ERROR;
++
++ vcos_event_delete(&bulk_waiter.event);
++ }
++
++ return status;
++
++error_exit:
++ if (mode == VCHIQ_BULK_MODE_BLOCKING)
++ vcos_event_delete(&bulk_waiter.event);
++ vcos_mutex_unlock(&service->bulk_mutex);
++
++ return status;
++}
++
++VCHIQ_STATUS_T
++vchiq_queue_bulk_transmit(VCHIQ_SERVICE_HANDLE_T handle,
++ const void *data, int size, void *userdata)
++{
++ return vchiq_bulk_transfer((VCHIQ_SERVICE_T *)handle,
++ VCHI_MEM_HANDLE_INVALID, (void *)data, size, userdata,
++ VCHIQ_BULK_MODE_CALLBACK, VCHIQ_BULK_TRANSMIT);
++}
++
++VCHIQ_STATUS_T
++vchiq_queue_bulk_receive(VCHIQ_SERVICE_HANDLE_T handle, void *data, int size,
++ void *userdata)
++{
++ return vchiq_bulk_transfer((VCHIQ_SERVICE_T *)handle,
++ VCHI_MEM_HANDLE_INVALID, data, size, userdata,
++ VCHIQ_BULK_MODE_CALLBACK, VCHIQ_BULK_RECEIVE);
++}
++
++VCHIQ_STATUS_T
++vchiq_queue_bulk_transmit_handle(VCHIQ_SERVICE_HANDLE_T handle,
++ VCHI_MEM_HANDLE_T memhandle, const void *offset, int size, void *userdata)
++{
++ return vchiq_bulk_transfer((VCHIQ_SERVICE_T *)handle,
++ memhandle, (void *)offset, size, userdata,
++ VCHIQ_BULK_MODE_CALLBACK, VCHIQ_BULK_TRANSMIT);
++}
++
++VCHIQ_STATUS_T
++vchiq_queue_bulk_receive_handle(VCHIQ_SERVICE_HANDLE_T handle,
++ VCHI_MEM_HANDLE_T memhandle, void *offset, int size, void *userdata)
++{
++ return vchiq_bulk_transfer((VCHIQ_SERVICE_T *)handle,
++ memhandle, offset, size, userdata,
++ VCHIQ_BULK_MODE_CALLBACK, VCHIQ_BULK_RECEIVE);
++}
++
++VCHIQ_STATUS_T
++vchiq_bulk_transmit(VCHIQ_SERVICE_HANDLE_T handle, const void *data, int size,
++ void *userdata, VCHIQ_BULK_MODE_T mode)
++{
++ return vchiq_bulk_transfer((VCHIQ_SERVICE_T *)handle,
++ VCHI_MEM_HANDLE_INVALID, (void *)data, size, userdata,
++ mode, VCHIQ_BULK_TRANSMIT);
++}
++
++VCHIQ_STATUS_T
++vchiq_bulk_receive(VCHIQ_SERVICE_HANDLE_T handle, void *data, int size,
++ void *userdata, VCHIQ_BULK_MODE_T mode)
++{
++ return vchiq_bulk_transfer((VCHIQ_SERVICE_T *)handle,
++ VCHI_MEM_HANDLE_INVALID, data, size, userdata,
++ mode, VCHIQ_BULK_RECEIVE);
++}
++
++VCHIQ_STATUS_T
++vchiq_bulk_transmit_handle(VCHIQ_SERVICE_HANDLE_T handle,
++ VCHI_MEM_HANDLE_T memhandle, const void *offset, int size, void *userdata,
++ VCHIQ_BULK_MODE_T mode)
++{
++ return vchiq_bulk_transfer((VCHIQ_SERVICE_T *)handle,
++ memhandle, (void *)offset, size, userdata,
++ mode, VCHIQ_BULK_TRANSMIT);
++}
++
++VCHIQ_STATUS_T
++vchiq_bulk_receive_handle(VCHIQ_SERVICE_HANDLE_T handle,
++ VCHI_MEM_HANDLE_T memhandle, void *offset, int size, void *userdata,
++ VCHIQ_BULK_MODE_T mode)
++{
++ return vchiq_bulk_transfer((VCHIQ_SERVICE_T *)handle,
++ memhandle, offset, size, userdata,
++ mode, VCHIQ_BULK_RECEIVE);
++}
++
++VCHIQ_STATUS_T
++vchiq_queue_message(VCHIQ_SERVICE_HANDLE_T handle,
++ const VCHIQ_ELEMENT_T *elements, int count)
++{
++ VCHIQ_SERVICE_T *service = (VCHIQ_SERVICE_T *) handle;
++
++ unsigned int size = 0;
++ unsigned int i;
++
++ if ((service == NULL) ||
++ (service->srvstate != VCHIQ_SRVSTATE_OPEN))
++ return VCHIQ_ERROR;
++
++ for (i = 0; i < (unsigned int)count; i++)
++ {
++ if (elements[i].size)
++ {
++ if (elements[i].data == NULL)
++ {
++ VCHIQ_SERVICE_STATS_INC(service, error_count);
++ return VCHIQ_ERROR;
++ }
++ size += elements[i].size;
++ }
++ }
++
++ if (size > VCHIQ_MAX_MSG_SIZE)
++ {
++ VCHIQ_SERVICE_STATS_INC(service, error_count);
++ return VCHIQ_ERROR;
++ }
++
++ return queue_message(service->state, service,
++ VCHIQ_MAKE_MSG(VCHIQ_MSG_DATA, service->localport,
++ service->remoteport), elements, count, size, 1);
++}
++
++void
++vchiq_release_message(VCHIQ_SERVICE_HANDLE_T handle, VCHIQ_HEADER_T *header)
++{
++ VCHIQ_SERVICE_T *service = (VCHIQ_SERVICE_T *)handle;
++ VCHIQ_STATE_T *state;
++ int slot_index;
++ int msgid;
++
++ if (service == NULL)
++ return;
++
++ state = service->state;
++
++ slot_index = SLOT_INDEX_FROM_DATA(state, (void *)header);
++
++ if ((slot_index >= state->remote->slot_first) &&
++ (slot_index <= state->remote->slot_last) &&
++ ((msgid = header->msgid) & VCHIQ_MSGID_CLAIMED))
++ {
++ VCHIQ_SLOT_INFO_T *slot_info = SLOT_INFO_FROM_INDEX(state, slot_index);
++
++ /* Rewrite the message header to prevent a double release */
++ header->msgid = msgid & ~VCHIQ_MSGID_CLAIMED;
++
++ release_slot(state, slot_info);
++ }
++}
++
++int
++vchiq_get_client_id(VCHIQ_SERVICE_HANDLE_T handle)
++{
++ VCHIQ_SERVICE_T *service = (VCHIQ_SERVICE_T *)handle;
++ return service ? service->client_id : 0;
++}
++
++VCHIQ_STATUS_T
++vchiq_get_config(VCHIQ_INSTANCE_T instance,
++ int config_size, VCHIQ_CONFIG_T *pconfig)
++{
++ VCHIQ_CONFIG_T config;
++
++ vcos_unused(instance);
++
++ config.max_msg_size = VCHIQ_MAX_MSG_SIZE;
++ config.bulk_threshold = VCHIQ_MAX_MSG_SIZE;
++ config.max_outstanding_bulks = VCHIQ_NUM_SERVICE_BULKS;
++ config.max_services = VCHIQ_MAX_SERVICES;
++ config.version = VCHIQ_VERSION;
++ config.version_min = VCHIQ_VERSION_MIN;
++
++ if (config_size > sizeof(VCHIQ_CONFIG_T))
++ return VCHIQ_ERROR;
++
++ memcpy(pconfig, &config, vcos_min(config_size, sizeof(VCHIQ_CONFIG_T)));
++
++ return VCHIQ_SUCCESS;
++}
++
++VCHIQ_STATUS_T
++vchiq_set_service_option(VCHIQ_SERVICE_HANDLE_T handle,
++ VCHIQ_SERVICE_OPTION_T option, int value)
++{
++ VCHIQ_SERVICE_T *service = (VCHIQ_SERVICE_T *)handle;
++ VCHIQ_STATUS_T status = VCHIQ_ERROR;
++
++ if (service)
++ {
++ switch (option)
++ {
++ case VCHIQ_SERVICE_OPTION_AUTOCLOSE:
++ service->auto_close = value;
++ status = VCHIQ_SUCCESS;
++ break;
++
++ default:
++ break;
++ }
++ }
++
++ return status;
++}
++
++void
++vchiq_dump_shared_state(void *dump_context, VCHIQ_STATE_T *state,
++ VCHIQ_SHARED_STATE_T *shared, const char *label)
++{
++ static const char *const debug_names[] =
++ {
++ "<entries>",
++ "SLOT_HANDLER_COUNT",
++ "SLOT_HANDLER_LINE",
++ "PARSE_LINE",
++ "PARSE_HEADER",
++ "PARSE_MSGID",
++ "AWAIT_COMPLETION_LINE",
++ "DEQUEUE_MESSAGE_LINE",
++ "SERVICE_CALLBACK_LINE",
++ "MSG_QUEUE_FULL_COUNT",
++ "COMPLETION_QUEUE_FULL_COUNT"
++ };
++ int i;
++
++ char buf[80];
++ int len;
++ len = vcos_snprintf(buf, sizeof(buf),
++ " %s: slots %d-%d tx_pos=%x recycle=%x",
++ label, shared->slot_first, shared->slot_last,
++ shared->tx_pos, shared->slot_queue_recycle);
++ vchiq_dump(dump_context, buf, len + 1);
++
++ len = vcos_snprintf(buf, sizeof(buf),
++ " Slots claimed:");
++ vchiq_dump(dump_context, buf, len + 1);
++
++ for (i = shared->slot_first; i <= shared->slot_last; i++)
++ {
++ VCHIQ_SLOT_INFO_T slot_info = *SLOT_INFO_FROM_INDEX(state, i);
++ if (slot_info.use_count != slot_info.release_count)
++ {
++ len = vcos_snprintf(buf, sizeof(buf),
++ " %d: %d/%d", i, slot_info.use_count, slot_info.release_count);
++ vchiq_dump(dump_context, buf, len + 1);
++ }
++ }
++
++ for (i = 1; i < shared->debug[DEBUG_ENTRIES]; i++)
++ {
++ len = vcos_snprintf(buf, sizeof(buf), " DEBUG: %s = %d(%x)",
++ debug_names[i], shared->debug[i], shared->debug[i]);
++ vchiq_dump(dump_context, buf, len + 1);
++ }
++}
++
++void
++vchiq_dump_state(void *dump_context, VCHIQ_STATE_T *state)
++{
++ char buf[80];
++ int len;
++ int i;
++
++ len = vcos_snprintf(buf, sizeof(buf), "State %d: %s", state->id,
++ conn_state_names[state->conn_state]);
++ vchiq_dump(dump_context, buf, len + 1);
++
++ len = vcos_snprintf(buf, sizeof(buf),
++ " tx_pos=%x(@%x), rx_pos=%x(@%x)",
++ state->id, state->local->tx_pos,
++ (uint32_t)state->tx_data + (state->local_tx_pos & VCHIQ_SLOT_MASK),
++ state->rx_pos,
++ (uint32_t)state->rx_data + (state->rx_pos & VCHIQ_SLOT_MASK));
++ vchiq_dump(dump_context, buf, len + 1);
++
++ len = vcos_snprintf(buf, sizeof(buf),
++ " Version: %d (min %d)",
++ VCHIQ_VERSION, VCHIQ_VERSION_MIN);
++ vchiq_dump(dump_context, buf, len + 1);
++
++ if (VCHIQ_ENABLE_STATS)
++ {
++ len = vcos_snprintf(buf, sizeof(buf),
++ " Stats: ctrl_tx_count=%d, ctrl_rx_count=%d, error_count=%d",
++ state->stats.ctrl_tx_count, state->stats.ctrl_rx_count,
++ state->stats.slot_stalls);
++ vchiq_dump(dump_context, buf, len + 1);
++ }
++
++ len = vcos_snprintf(buf, sizeof(buf),
++ " Slots: %d available, %d recyclable, %d stalls",
++ state->slot_queue_available - SLOT_QUEUE_INDEX_FROM_POS(state->local_tx_pos),
++ state->local->slot_queue_recycle - state->slot_queue_available,
++ state->stats.slot_stalls);
++ vchiq_dump(dump_context, buf, len + 1);
++
++ vchiq_dump_platform_state(dump_context);
++
++ vchiq_dump_shared_state(dump_context, state, state->local, "Local");
++ vchiq_dump_shared_state(dump_context, state, state->remote, "Remote");
++
++ vchiq_dump_platform_instances(dump_context);
++
++ for (i = 0; i < state->unused_service; i++) {
++ VCHIQ_SERVICE_T *service = state->services[i];
++
++ if (service && (service->srvstate != VCHIQ_SRVSTATE_FREE))
++ vchiq_dump_service_state(dump_context, service);
++ }
++}
++
++void
++vchiq_dump_service_state(void *dump_context, VCHIQ_SERVICE_T *service)
++{
++ char buf[80];
++ int len;
++
++ len = vcos_snprintf(buf, sizeof(buf), "Service %d: %s",
++ service->localport, srvstate_names[service->srvstate]);
++
++ if (service->srvstate != VCHIQ_SRVSTATE_FREE)
++ {
++ char remoteport[30];
++ VCHIQ_SERVICE_QUOTA_T *service_quota =
++ &service->state->service_quotas[service->localport];
++ int fourcc = service->base.fourcc;
++ if (service->remoteport != VCHIQ_PORT_FREE)
++ {
++ int len2 = vcos_snprintf(remoteport, sizeof(remoteport), "%d",
++ service->remoteport);
++ if (service->public_fourcc != VCHIQ_FOURCC_INVALID)
++ vcos_snprintf(remoteport + len2, sizeof(remoteport) - len2,
++ " (client %x)", service->client_id);
++ }
++ else
++ vcos_strcpy(remoteport, "n/a");
++
++ len += vcos_snprintf(buf + len, sizeof(buf) - len,
++ " '%c%c%c%c' remote %s (slot use %d/%d)",
++ VCHIQ_FOURCC_AS_4CHARS(fourcc),
++ remoteport,
++ service_quota->slot_use_count,
++ service_quota->slot_quota);
++
++ if (VCHIQ_ENABLE_STATS)
++ {
++ vchiq_dump(dump_context, buf, len + 1);
++
++ len = vcos_snprintf(buf, sizeof(buf),
++ " Ctrl: tx_count=%d, tx_bytes=%" PRIu64 ", rx_count=%d, rx_bytes=%" PRIu64,
++ service->stats.ctrl_tx_count, service->stats.ctrl_tx_bytes,
++ service->stats.ctrl_rx_count, service->stats.ctrl_rx_bytes);
++ vchiq_dump(dump_context, buf, len + 1);
++
++ len = vcos_snprintf(buf, sizeof(buf),
++ " Bulk: tx_count=%d, tx_bytes=%" PRIu64 ", rx_count=%d, rx_bytes=%" PRIu64,
++ service->stats.bulk_tx_count, service->stats.bulk_tx_bytes,
++ service->stats.bulk_rx_count, service->stats.bulk_rx_bytes);
++ vchiq_dump(dump_context, buf, len + 1);
++
++ len = vcos_snprintf(buf, sizeof(buf),
++ " %d quota stalls, %d slot stalls, %d bulk stalls, %d aborted, %d errors",
++ service->stats.quota_stalls, service->stats.slot_stalls,
++ service->stats.bulk_stalls, service->stats.bulk_aborted_count,
++ service->stats.error_count);
++ }
++ }
++
++ vchiq_dump(dump_context, buf, len + 1);
++
++ vchiq_dump_platform_service_state(dump_context, service);
++}
+--- /dev/null
++++ b/drivers/misc/vc04_services/interface/vchiq_arm/vchiq_core.h
+@@ -0,0 +1,480 @@
++/*
++ * Copyright (c) 2010-2011 Broadcom Corporation. All rights reserved.
++ *
++ * This program is free software; you can redistribute it and/or modify
++ * it under the terms of the GNU General Public License as published by
++ * the Free Software Foundation; either version 2 of the License, or
++ * (at your option) any later version.
++ *
++ * This program is distributed in the hope that it will be useful,
++ * but WITHOUT ANY WARRANTY; without even the implied warranty of
++ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
++ * GNU General Public License for more details.
++ *
++ * You should have received a copy of the GNU General Public License
++ * along with this program; if not, write to the Free Software
++ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
++ */
++
++#ifndef VCHIQ_CORE_H
++#define VCHIQ_CORE_H
++
++#include "vchiq_cfg.h"
++
++#include "vchiq.h"
++
++#define IS_POW2(x) (x && ((x & (x - 1)) == 0))
++
++/* Ensure that the slot size and maximum number of slots are powers of 2 */
++vcos_static_assert(IS_POW2(VCHIQ_SLOT_SIZE));
++vcos_static_assert(IS_POW2(VCHIQ_MAX_SLOTS));
++vcos_static_assert(IS_POW2(VCHIQ_MAX_SLOTS_PER_SIDE));
++
++#define VCHIQ_SLOT_MASK (VCHIQ_SLOT_SIZE - 1)
++#define VCHIQ_SLOT_QUEUE_MASK (VCHIQ_MAX_SLOTS_PER_SIDE - 1)
++#define VCHIQ_SLOT_ZERO_SLOTS ((sizeof(VCHIQ_SLOT_ZERO_T) + \
++ VCHIQ_SLOT_SIZE - 1) / VCHIQ_SLOT_SIZE)
++
++#define VCHIQ_MSG_PADDING 0 // -
++#define VCHIQ_MSG_CONNECT 1 // -
++#define VCHIQ_MSG_OPEN 2 // + (srcport, -), fourcc, client_id
++#define VCHIQ_MSG_OPENACK 3 // + (srcport, dstport)
++#define VCHIQ_MSG_CLOSE 4 // + (srcport, dstport)
++#define VCHIQ_MSG_DATA 5 // + (srcport, dstport)
++#define VCHIQ_MSG_BULK_RX 6 // + (srcport, dstport), data, size
++#define VCHIQ_MSG_BULK_TX 7 // + (srcport, dstport), data, size
++#define VCHIQ_MSG_BULK_RX_DONE 8 // + (srcport, dstport), actual
++#define VCHIQ_MSG_BULK_TX_DONE 9 // + (srcport, dstport), actual
++#define VCHIQ_MSG_PAUSE 10 // -
++#define VCHIQ_MSG_RESUME 11 // -
++
++#define VCHIQ_PORT_MAX (VCHIQ_MAX_SERVICES - 1)
++#define VCHIQ_PORT_FREE 0x1000
++#define VCHIQ_PORT_IS_VALID(port) (port < VCHIQ_PORT_FREE)
++#define VCHIQ_MAKE_MSG(type,srcport,dstport) ((type<<24) | (srcport<<12) | (dstport<<0))
++#define VCHIQ_MSG_TYPE(msgid) ((unsigned int)msgid >> 24)
++#define VCHIQ_MSG_SRCPORT(msgid) (unsigned short)(((unsigned int)msgid >> 12) & 0xfff)
++#define VCHIQ_MSG_DSTPORT(msgid) ((unsigned short)msgid & 0xfff)
++
++#define VCHIQ_FOURCC_AS_4CHARS(fourcc) \
++ ((fourcc) >> 24) & 0xff, \
++ ((fourcc) >> 16) & 0xff, \
++ ((fourcc) >> 8) & 0xff, \
++ ((fourcc) ) & 0xff
++
++/* Ensure the fields are wide enough */
++vcos_static_assert(VCHIQ_MSG_SRCPORT(VCHIQ_MAKE_MSG(0,0,VCHIQ_PORT_MAX)) == 0);
++vcos_static_assert(VCHIQ_MSG_TYPE(VCHIQ_MAKE_MSG(0,VCHIQ_PORT_MAX,0)) == 0);
++vcos_static_assert((unsigned int)VCHIQ_PORT_MAX < (unsigned int)VCHIQ_PORT_FREE);
++
++#define VCHIQ_MSGID_PADDING VCHIQ_MAKE_MSG(VCHIQ_MSG_PADDING,0,0)
++#define VCHIQ_MSGID_CLAIMED 0x40000000
++
++#define VCHIQ_FOURCC_INVALID 0x00000000
++#define VCHIQ_FOURCC_IS_LEGAL(fourcc) (fourcc != VCHIQ_FOURCC_INVALID)
++
++#define VCHIQ_BULK_ACTUAL_ABORTED -1
++
++typedef uint32_t BITSET_T;
++
++vcos_static_assert((sizeof(BITSET_T) * 8) == 32);
++
++#define BITSET_SIZE(b) ((b + 31) >> 5)
++#define BITSET_WORD(b) (b >> 5)
++#define BITSET_BIT(b) (1 << (b & 31))
++#define BITSET_ZERO(bs) memset(bs, 0, sizeof(bs))
++#define BITSET_IS_SET(bs, b) (bs[BITSET_WORD(b)] & BITSET_BIT(b))
++#define BITSET_SET(bs, b) (bs[BITSET_WORD(b)] |= BITSET_BIT(b))
++#define BITSET_CLR(bs, b) (bs[BITSET_WORD(b)] &= ~BITSET_BIT(b))
++
++#if VCHIQ_ENABLE_STATS
++#define VCHIQ_STATS_INC(state, stat) (state->stats. stat ++)
++#define VCHIQ_SERVICE_STATS_INC(service, stat) (service->stats. stat ++)
++#define VCHIQ_SERVICE_STATS_ADD(service, stat, addend) (service->stats. stat += addend)
++#else
++#define VCHIQ_STATS_INC(state, stat) ((void)0)
++#define VCHIQ_SERVICE_STATS_INC(service, stat) ((void)0)
++#define VCHIQ_SERVICE_STATS_ADD(service, stat, addend) ((void)0)
++#endif
++
++enum
++{
++ DEBUG_ENTRIES,
++#if VCHIQ_ENABLE_DEBUG
++ DEBUG_SLOT_HANDLER_COUNT,
++ DEBUG_SLOT_HANDLER_LINE,
++ DEBUG_PARSE_LINE,
++ DEBUG_PARSE_HEADER,
++ DEBUG_PARSE_MSGID,
++ DEBUG_AWAIT_COMPLETION_LINE,
++ DEBUG_DEQUEUE_MESSAGE_LINE,
++ DEBUG_SERVICE_CALLBACK_LINE,
++ DEBUG_MSG_QUEUE_FULL_COUNT,
++ DEBUG_COMPLETION_QUEUE_FULL_COUNT,
++#endif
++ DEBUG_MAX
++};
++
++#if VCHIQ_ENABLE_DEBUG
++
++#define DEBUG_INITIALISE(local) volatile int *debug_ptr = (local)->debug;
++#define DEBUG_TRACE(d) debug_ptr[DEBUG_ ## d] = __LINE__
++#define DEBUG_VALUE(d,v) debug_ptr[DEBUG_ ## d] = (v)
++#define DEBUG_COUNT(d) debug_ptr[DEBUG_ ## d]++
++
++#else /* VCHIQ_ENABLE_DEBUG */
++
++#define DEBUG_INITIALISE(local)
++#define DEBUG_TRACE(d)
++#define DEBUG_VALUE(d,v)
++#define DEBUG_COUNT(d)
++
++#endif /* VCHIQ_ENABLE_DEBUG */
++
++typedef enum
++{
++ VCHIQ_CONNSTATE_DISCONNECTED,
++ VCHIQ_CONNSTATE_CONNECTED,
++ VCHIQ_CONNSTATE_PAUSING,
++ VCHIQ_CONNSTATE_PAUSE_SENT,
++ VCHIQ_CONNSTATE_PAUSED,
++ VCHIQ_CONNSTATE_RESUMING
++} VCHIQ_CONNSTATE_T;
++
++enum
++{
++ VCHIQ_SRVSTATE_FREE,
++ VCHIQ_SRVSTATE_HIDDEN,
++ VCHIQ_SRVSTATE_LISTENING,
++ VCHIQ_SRVSTATE_OPENING,
++ VCHIQ_SRVSTATE_OPEN,
++ VCHIQ_SRVSTATE_CLOSESENT,
++ VCHIQ_SRVSTATE_CLOSING,
++ VCHIQ_SRVSTATE_CLOSEWAIT
++};
++
++enum
++{
++ VCHIQ_POLL_TERMINATE,
++ VCHIQ_POLL_TXNOTIFY,
++ VCHIQ_POLL_RXNOTIFY,
++ VCHIQ_POLL_COUNT
++};
++
++typedef enum
++{
++ VCHIQ_BULK_TRANSMIT,
++ VCHIQ_BULK_RECEIVE
++} VCHIQ_BULK_DIR_T;
++
++typedef struct vchiq_bulk_struct {
++ short mode;
++ short dir;
++ void *userdata;
++ VCHI_MEM_HANDLE_T handle;
++ void *data;
++ int size;
++ void *remote_data;
++ int remote_size;
++ int actual;
++} VCHIQ_BULK_T;
++
++typedef struct vchiq_bulk_queue_struct {
++ int local_insert; /* Where to insert the next local bulk */
++ int remote_insert; /* Where to insert the next remote bulk (master) */
++ int process; /* Bulk to transfer next */
++ int remote_notify; /* Bulk to notify the remote client of next (master) */
++ int remove; /* Bulk to notify the local client of, and remove, next */
++ VCHIQ_BULK_T bulks[VCHIQ_NUM_SERVICE_BULKS];
++} VCHIQ_BULK_QUEUE_T;
++
++typedef struct remote_event_struct {
++ volatile int armed;
++ volatile int fired;
++ VCOS_EVENT_T * event;
++} REMOTE_EVENT_T;
++
++typedef struct vchiq_state_struct VCHIQ_STATE_T;
++
++typedef struct vchiq_slot_struct {
++ char data[VCHIQ_SLOT_SIZE];
++} VCHIQ_SLOT_T;
++
++typedef struct vchiq_slot_info_struct {
++ /* Use two counters rather than one to avoid the need for a mutex. */
++ volatile short use_count;
++ volatile short release_count;
++} VCHIQ_SLOT_INFO_T;
++
++typedef struct vchiq_service_struct {
++ VCHIQ_SERVICE_BASE_T base;
++ volatile int srvstate;
++ unsigned int localport;
++ unsigned int remoteport;
++ int public_fourcc;
++ int client_id;
++ int auto_close;
++ VCOS_ATOMIC_FLAGS_T poll_flags;
++ short version;
++ short version_min;
++
++ VCHIQ_STATE_T *state;
++ VCHIQ_INSTANCE_T instance;
++
++ int service_use_count;
++
++ VCHIQ_BULK_QUEUE_T bulk_tx;
++ VCHIQ_BULK_QUEUE_T bulk_rx;
++
++ VCOS_EVENT_T remove_event;
++ VCOS_EVENT_T bulk_remove_event;
++ VCOS_MUTEX_T bulk_mutex;
++
++ struct service_stats_struct
++ {
++ int quota_stalls;
++ int slot_stalls;
++ int bulk_stalls;
++ int error_count;
++ int ctrl_tx_count;
++ int ctrl_rx_count;
++ int bulk_tx_count;
++ int bulk_rx_count;
++ int bulk_aborted_count;
++ uint64_t ctrl_tx_bytes;
++ uint64_t ctrl_rx_bytes;
++ uint64_t bulk_tx_bytes;
++ uint64_t bulk_rx_bytes;
++ } stats;
++} VCHIQ_SERVICE_T;
++
++/* The quota information is outside VCHIQ_SERVICE_T so that it can be
++ statically allocated, since for accounting reasons a service's slot
++ usage is carried over between users of the same port number.
++ */
++typedef struct vchiq_service_quota_struct {
++ int slot_quota;
++ int slot_use_count;
++ VCOS_EVENT_T quota_event;
++ int previous_tx_index;
++} VCHIQ_SERVICE_QUOTA_T;
++
++typedef struct vchiq_shared_state_struct {
++
++ /* A non-zero value here indicates that the content is valid. */
++ int initialised;
++
++ /* The first and last (inclusive) slots allocated to the owner. */
++ int slot_first;
++ int slot_last;
++
++ /* Signalling this event indicates that owner's slot handler thread should
++ run. */
++ REMOTE_EVENT_T trigger;
++
++ /* Indicates the byte position within the stream where the next message
++ will be written. The least significant bits are an index into the slot.
++ The next bits are the index of the slot in slot_queue. */
++ volatile int tx_pos;
++
++ /* This event should be signalled when a slot is recycled. */
++ REMOTE_EVENT_T recycle;
++
++ /* The slot_queue index where the next recycled slot will be written. */
++ volatile int slot_queue_recycle;
++
++ /* A circular buffer of slot indexes. */
++ int slot_queue[VCHIQ_MAX_SLOTS_PER_SIDE];
++
++ /* Debugging state */
++ volatile int debug[DEBUG_MAX];
++} VCHIQ_SHARED_STATE_T;
++
++typedef struct vchiq_slot_zero_struct {
++ int magic;
++ short version;
++ short version_min;
++ int slot_zero_size;
++ int slot_size;
++ int max_slots;
++ int max_slots_per_side;
++ int platform_data[2];
++ VCHIQ_SHARED_STATE_T master;
++ VCHIQ_SHARED_STATE_T slave;
++ VCHIQ_SLOT_INFO_T slots[VCHIQ_MAX_SLOTS];
++} VCHIQ_SLOT_ZERO_T;
++
++struct vchiq_state_struct {
++ int id;
++ int initialised;
++ VCHIQ_CONNSTATE_T conn_state;
++ int is_master;
++
++ VCHIQ_SHARED_STATE_T *local;
++ VCHIQ_SHARED_STATE_T *remote;
++ VCHIQ_SLOT_T *slot_data;
++
++ int default_slot_quota;
++
++ VCOS_EVENT_T connect; // event indicating connect message received
++ VCOS_MUTEX_T mutex; // mutex protecting services
++ VCHIQ_INSTANCE_T *instance;
++
++ VCOS_THREAD_T slot_handler_thread; // processes incoming messages
++ VCOS_THREAD_T recycle_thread; // processes recycled slots
++ VCOS_THREAD_T lp_thread; // processes low priority messages (eg suspend)
++
++ /* Local implementation of the trigger remote event */
++ VCOS_EVENT_T trigger_event;
++
++ /* Local implementation of the recycle remote event */
++ VCOS_EVENT_T recycle_event;
++
++ VCOS_EVENT_T lp_evt;
++
++ char *tx_data;
++ char *rx_data;
++ VCHIQ_SLOT_INFO_T *rx_info;
++
++ VCOS_MUTEX_T slot_mutex;
++
++ VCOS_MUTEX_T recycle_mutex;
++
++ VCOS_MUTEX_T suspend_resume_mutex;
++ VCOS_MUTEX_T use_count_mutex;
++
++ /* Global use count for videocore.
++ * This is equal to the sum of the use counts for all services. When this hits
++ * zero the videocore suspend procedure will be initiated. */
++ int videocore_use_count;
++
++ /* Flag to indicate whether videocore is currently suspended */
++ int videocore_suspended;
++
++ /* Indicates the byte position within the stream from where the next message
++ will be read. The least significant bits are an index into the slot.
++ The next bits are the index of the slot in remote->slot_queue. */
++ int rx_pos;
++
++ /* A cached copy of local->tx_pos. Only write to local->tx_pos, and read
++ from remote->tx_pos. */
++ int local_tx_pos;
++
++ /* The slot_queue index of the slot to become available next. */
++ int slot_queue_available;
++
++ /* A flag to indicate if any poll has been requested */
++ int poll_needed;
++
++ /* An array of bit sets indicating which services must be polled. */
++ VCOS_ATOMIC_FLAGS_T poll_services[BITSET_SIZE(VCHIQ_MAX_SERVICES)];
++
++ /* The number of the first unused service */
++ int unused_service;
++
++ /* Signalled when a free slot becomes available. */
++ VCOS_EVENT_T slot_available_event;
++
++ VCOS_EVENT_T slot_remove_event;
++
++ struct state_stats_struct
++ {
++ int slot_stalls;
++ int ctrl_tx_count;
++ int ctrl_rx_count;
++ int error_count;
++ } stats;
++
++ VCHIQ_SERVICE_T *services[VCHIQ_MAX_SERVICES];
++ VCHIQ_SERVICE_QUOTA_T service_quotas[VCHIQ_MAX_SERVICES];
++ VCHIQ_SLOT_INFO_T slot_info[VCHIQ_MAX_SLOTS];
++};
++
++extern VCHIQ_SLOT_ZERO_T *
++vchiq_init_slots(void *mem_base, int mem_size);
++
++extern VCHIQ_STATUS_T
++vchiq_init_state(VCHIQ_STATE_T *state, VCHIQ_SLOT_ZERO_T *slot_zero, int is_master);
++
++extern VCHIQ_STATUS_T
++vchiq_connect_internal(VCHIQ_STATE_T *state, VCHIQ_INSTANCE_T instance);
++
++extern VCHIQ_SERVICE_T *
++vchiq_add_service_internal(VCHIQ_STATE_T *state,
++ const VCHIQ_SERVICE_PARAMS_T *params, int srvstate,
++ VCHIQ_INSTANCE_T instance);
++
++extern VCHIQ_STATUS_T
++vchiq_open_service_internal(VCHIQ_SERVICE_T *service, int client_id);
++
++extern VCHIQ_STATUS_T
++vchiq_close_service_internal(VCHIQ_SERVICE_T *service, int close_recvd);
++
++extern void
++vchiq_terminate_service_internal(VCHIQ_SERVICE_T *service);
++
++extern void
++vchiq_free_service_internal(VCHIQ_SERVICE_T *service);
++
++extern VCHIQ_STATUS_T
++vchiq_shutdown_internal(VCHIQ_STATE_T *state, VCHIQ_INSTANCE_T instance);
++
++extern VCHIQ_STATUS_T
++vchiq_pause_internal(VCHIQ_STATE_T *state);
++
++extern VCHIQ_STATUS_T
++vchiq_resume_internal(VCHIQ_STATE_T *state);
++
++extern void
++remote_event_pollall(VCHIQ_STATE_T *state);
++
++extern VCHIQ_STATUS_T
++vchiq_bulk_transfer(VCHIQ_SERVICE_T *service,
++ VCHI_MEM_HANDLE_T memhandle, void *offset, int size, void *userdata,
++ VCHIQ_BULK_MODE_T mode, VCHIQ_BULK_DIR_T dir);
++
++extern void
++vchiq_dump_state(void *dump_context, VCHIQ_STATE_T *state);
++
++extern void
++vchiq_dump_service_state(void *dump_context, VCHIQ_SERVICE_T *service);
++
++/* The following functions are called from vchiq_core, and external
++ implementations must be provided. */
++
++extern VCHIQ_STATUS_T
++vchiq_prepare_bulk_data(VCHIQ_BULK_T *bulk,
++ VCHI_MEM_HANDLE_T memhandle, void *offset, int size, int dir);
++
++extern void
++vchiq_transfer_bulk(VCHIQ_BULK_T *bulk);
++
++extern void
++vchiq_complete_bulk(VCHIQ_BULK_T *bulk);
++
++extern VCHIQ_STATUS_T
++vchiq_copy_from_user(void *dst, const void *src, int size);
++
++extern void
++remote_event_signal(REMOTE_EVENT_T *event);
++
++extern void
++vchiq_platform_paused(VCHIQ_STATE_T *state);
++
++extern void
++vchiq_platform_resumed(VCHIQ_STATE_T *state);
++
++extern void
++vchiq_dump(void *dump_context, const char *str, int len);
++
++extern void
++vchiq_dump_platform_state(void *dump_context);
++
++extern void
++vchiq_dump_platform_instances(void *dump_context);
++
++extern void
++vchiq_dump_platform_service_state(void *dump_context,
++ VCHIQ_SERVICE_T *service);
++
++#endif
+--- /dev/null
++++ b/drivers/misc/vc04_services/interface/vchiq_arm/vchiq_if.h
+@@ -0,0 +1,148 @@
++/*
++ * Copyright (c) 2010-2011 Broadcom Corporation. All rights reserved.
++ *
++ * This program is free software; you can redistribute it and/or modify
++ * it under the terms of the GNU General Public License as published by
++ * the Free Software Foundation; either version 2 of the License, or
++ * (at your option) any later version.
++ *
++ * This program is distributed in the hope that it will be useful,
++ * but WITHOUT ANY WARRANTY; without even the implied warranty of
++ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
++ * GNU General Public License for more details.
++ *
++ * You should have received a copy of the GNU General Public License
++ * along with this program; if not, write to the Free Software
++ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
++ */
++
++#ifndef VCHIQ_IF_H
++#define VCHIQ_IF_H
++
++#include "interface/vchi/vchi_mh.h"
++
++#define VCHIQ_SLOT_SIZE 4096
++#define VCHIQ_MAX_MSG_SIZE (VCHIQ_SLOT_SIZE - sizeof(VCHIQ_HEADER_T))
++#define VCHIQ_CHANNEL_SIZE VCHIQ_MAX_MSG_SIZE /* For backwards compatibility */
++
++#define VCHIQ_MAKE_FOURCC(x0, x1, x2, x3) (((x0) << 24) | ((x1) << 16) | ((x2) << 8) | (x3))
++#define VCHIQ_GET_SERVICE_USERDATA(service) (service->userdata)
++#define VCHIQ_GET_SERVICE_FOURCC(service) (service->fourcc)
++
++typedef enum {
++ VCHIQ_SERVICE_OPENED, // service, -, -
++ VCHIQ_SERVICE_CLOSED, // service, -, -
++ VCHIQ_MESSAGE_AVAILABLE, // service, header, -
++ VCHIQ_BULK_TRANSMIT_DONE, // service, -, bulk_userdata
++ VCHIQ_BULK_RECEIVE_DONE, // service, -, bulk_userdata
++ VCHIQ_BULK_TRANSMIT_ABORTED, // service, -, bulk_userdata
++ VCHIQ_BULK_RECEIVE_ABORTED // service, -, bulk_userdata
++} VCHIQ_REASON_T;
++
++typedef enum
++{
++ VCHIQ_ERROR = -1,
++ VCHIQ_SUCCESS = 0,
++ VCHIQ_RETRY = 1
++} VCHIQ_STATUS_T;
++
++typedef enum
++{
++ VCHIQ_BULK_MODE_CALLBACK,
++ VCHIQ_BULK_MODE_BLOCKING,
++ VCHIQ_BULK_MODE_NOCALLBACK
++} VCHIQ_BULK_MODE_T;
++
++typedef enum
++{
++ VCHIQ_SERVICE_OPTION_AUTOCLOSE
++} VCHIQ_SERVICE_OPTION_T;
++
++#ifdef __HIGHC__
++/* Allow zero-sized arrays without warnings */
++#pragma warning (push)
++#pragma warning (disable : 4200)
++#endif
++
++typedef struct vchiq_header_struct {
++ /* The message identifier - opaque to applications. */
++ int msgid;
++
++ /* Size of message data. */
++ unsigned int size;
++
++ char data[0]; /* message */
++} VCHIQ_HEADER_T;
++
++#ifdef __HIGHC__
++#pragma warning (pop)
++#endif
++
++typedef struct {
++ const void *data;
++ int size;
++} VCHIQ_ELEMENT_T;
++
++typedef const struct vchiq_service_base_struct *VCHIQ_SERVICE_HANDLE_T;
++
++typedef VCHIQ_STATUS_T (*VCHIQ_CALLBACK_T)(VCHIQ_REASON_T, VCHIQ_HEADER_T *, VCHIQ_SERVICE_HANDLE_T, void *);
++
++typedef struct vchiq_service_base_struct {
++ int fourcc;
++ VCHIQ_CALLBACK_T callback;
++ void *userdata;
++} VCHIQ_SERVICE_BASE_T;
++
++typedef struct vchiq_service_params_struct {
++ int fourcc;
++ VCHIQ_CALLBACK_T callback;
++ void *userdata;
++ short version; /* Increment for non-trivial changes */
++ short version_min; /* Update for incompatible changes */
++} VCHIQ_SERVICE_PARAMS_T;
++
++typedef struct vchiq_config_struct {
++ int max_msg_size;
++ int bulk_threshold; /* The message size aboce which it is better to use
++ a bulk transfer (<= max_msg_size) */
++ int max_outstanding_bulks;
++ int max_services;
++ short version; /* The version of VCHIQ */
++ short version_min; /* The minimum compatible version of VCHIQ */
++} VCHIQ_CONFIG_T;
++
++typedef struct vchiq_instance_struct *VCHIQ_INSTANCE_T;
++
++extern VCHIQ_STATUS_T vchiq_initialise(VCHIQ_INSTANCE_T *pinstance);
++extern VCHIQ_STATUS_T vchiq_shutdown(VCHIQ_INSTANCE_T instance);
++extern VCHIQ_STATUS_T vchiq_connect(VCHIQ_INSTANCE_T instance);
++extern VCHIQ_STATUS_T vchiq_add_service(VCHIQ_INSTANCE_T instance, int fourcc, VCHIQ_CALLBACK_T callback, void *userdata, VCHIQ_SERVICE_HANDLE_T *pservice);
++extern VCHIQ_STATUS_T vchiq_open_service(VCHIQ_INSTANCE_T instance, int fourcc, VCHIQ_CALLBACK_T callback, void *userdata, VCHIQ_SERVICE_HANDLE_T *pservice);
++extern VCHIQ_STATUS_T vchiq_add_service_params(VCHIQ_INSTANCE_T instance,
++ const VCHIQ_SERVICE_PARAMS_T *params,
++ VCHIQ_SERVICE_HANDLE_T *pservice);
++extern VCHIQ_STATUS_T vchiq_open_service_params(VCHIQ_INSTANCE_T instance,
++ const VCHIQ_SERVICE_PARAMS_T *params,
++ VCHIQ_SERVICE_HANDLE_T *pservice);
++extern VCHIQ_STATUS_T vchiq_close_service(VCHIQ_SERVICE_HANDLE_T service);
++extern VCHIQ_STATUS_T vchiq_remove_service(VCHIQ_SERVICE_HANDLE_T service);
++extern VCHIQ_STATUS_T vchiq_use_service(VCHIQ_SERVICE_HANDLE_T service);
++extern VCHIQ_STATUS_T vchiq_release_service(VCHIQ_SERVICE_HANDLE_T service);
++
++extern VCHIQ_STATUS_T vchiq_queue_message(VCHIQ_SERVICE_HANDLE_T service, const VCHIQ_ELEMENT_T *elements, int count);
++extern void vchiq_release_message(VCHIQ_SERVICE_HANDLE_T service, VCHIQ_HEADER_T *header);
++extern VCHIQ_STATUS_T vchiq_queue_bulk_transmit(VCHIQ_SERVICE_HANDLE_T service, const void *data, int size, void *userdata);
++extern VCHIQ_STATUS_T vchiq_queue_bulk_receive(VCHIQ_SERVICE_HANDLE_T service, void *data, int size, void *userdata);
++extern VCHIQ_STATUS_T vchiq_queue_bulk_transmit_handle(VCHIQ_SERVICE_HANDLE_T service, VCHI_MEM_HANDLE_T handle, const void *offset, int size, void *userdata);
++extern VCHIQ_STATUS_T vchiq_queue_bulk_receive_handle(VCHIQ_SERVICE_HANDLE_T service, VCHI_MEM_HANDLE_T handle, void *offset, int size, void *userdata);
++extern VCHIQ_STATUS_T vchiq_bulk_transmit(VCHIQ_SERVICE_HANDLE_T service, const void *data, int size, void *userdata, VCHIQ_BULK_MODE_T mode);
++extern VCHIQ_STATUS_T vchiq_bulk_receive(VCHIQ_SERVICE_HANDLE_T service, void *data, int size, void *userdata, VCHIQ_BULK_MODE_T mode);
++extern VCHIQ_STATUS_T vchiq_bulk_transmit_handle(VCHIQ_SERVICE_HANDLE_T service, VCHI_MEM_HANDLE_T handle, const void *offset, int size, void *userdata, VCHIQ_BULK_MODE_T mode);
++extern VCHIQ_STATUS_T vchiq_bulk_receive_handle(VCHIQ_SERVICE_HANDLE_T service, VCHI_MEM_HANDLE_T handle, void *offset, int size, void *userdata, VCHIQ_BULK_MODE_T mode);
++extern int vchiq_get_client_id(VCHIQ_SERVICE_HANDLE_T service);
++extern VCHIQ_STATUS_T vchiq_get_config(VCHIQ_INSTANCE_T instance, int config_size, VCHIQ_CONFIG_T *pconfig);
++extern VCHIQ_STATUS_T vchiq_set_service_option(VCHIQ_SERVICE_HANDLE_T service, VCHIQ_SERVICE_OPTION_T option, int value);
++
++extern VCHIQ_STATUS_T vchiq_dump_phys_mem( VCHIQ_SERVICE_HANDLE_T service, void *ptr, size_t num_bytes );
++
++#endif /* VCHIQ_IF_H */
+--- /dev/null
++++ b/drivers/misc/vc04_services/interface/vchiq_arm/vchiq_ioctl.h
+@@ -0,0 +1,105 @@
++/*
++ * Copyright (c) 2010-2011 Broadcom Corporation. All rights reserved.
++ *
++ * This program is free software; you can redistribute it and/or modify
++ * it under the terms of the GNU General Public License as published by
++ * the Free Software Foundation; either version 2 of the License, or
++ * (at your option) any later version.
++ *
++ * This program is distributed in the hope that it will be useful,
++ * but WITHOUT ANY WARRANTY; without even the implied warranty of
++ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
++ * GNU General Public License for more details.
++ *
++ * You should have received a copy of the GNU General Public License
++ * along with this program; if not, write to the Free Software
++ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
++ */
++
++#ifndef VCHIQ_IOCTLS_H
++#define VCHIQ_IOCTLS_H
++
++#include <linux/ioctl.h>
++#include "vchiq_if.h"
++
++#define VCHIQ_IOC_MAGIC 0xc4
++#define VCHIQ_INVALID_HANDLE -1
++
++typedef struct {
++ VCHIQ_SERVICE_PARAMS_T params;
++ int is_open;
++ int is_vchi;
++ int handle; /* OUT */
++} VCHIQ_CREATE_SERVICE_T;
++
++typedef struct {
++ int handle;
++ int count;
++ const VCHIQ_ELEMENT_T *elements;
++} VCHIQ_QUEUE_MESSAGE_T;
++
++typedef struct {
++ int handle;
++ void *data;
++ int size;
++ void *userdata;
++ VCHIQ_BULK_MODE_T mode;
++} VCHIQ_QUEUE_BULK_TRANSFER_T;
++
++typedef struct {
++ VCHIQ_REASON_T reason;
++ VCHIQ_HEADER_T *header;
++ void *service_userdata;
++ void *bulk_userdata;
++} VCHIQ_COMPLETION_DATA_T;
++
++typedef struct {
++ int count;
++ VCHIQ_COMPLETION_DATA_T *buf;
++ int msgbufsize;
++ int msgbufcount; /* IN/OUT */
++ void **msgbufs;
++} VCHIQ_AWAIT_COMPLETION_T;
++
++typedef struct {
++ int handle;
++ int blocking;
++ int bufsize;
++ void *buf;
++} VCHIQ_DEQUEUE_MESSAGE_T;
++
++typedef struct {
++ int config_size;
++ VCHIQ_CONFIG_T *pconfig;
++} VCHIQ_GET_CONFIG_T;
++
++typedef struct {
++ int handle;
++ VCHIQ_SERVICE_OPTION_T option;
++ int value;
++} VCHIQ_SET_SERVICE_OPTION_T;
++
++typedef struct {
++ void *virt_addr;
++ size_t num_bytes;
++} VCHIQ_DUMP_MEM_T;
++
++#define VCHIQ_IOC_CONNECT _IO(VCHIQ_IOC_MAGIC, 0)
++#define VCHIQ_IOC_SHUTDOWN _IO(VCHIQ_IOC_MAGIC, 1)
++#define VCHIQ_IOC_CREATE_SERVICE _IOWR(VCHIQ_IOC_MAGIC, 2, VCHIQ_CREATE_SERVICE_T)
++#define VCHIQ_IOC_REMOVE_SERVICE _IO(VCHIQ_IOC_MAGIC, 3)
++#define VCHIQ_IOC_QUEUE_MESSAGE _IOW(VCHIQ_IOC_MAGIC, 4, VCHIQ_QUEUE_MESSAGE_T)
++#define VCHIQ_IOC_QUEUE_BULK_TRANSMIT _IOW(VCHIQ_IOC_MAGIC, 5, VCHIQ_QUEUE_BULK_TRANSFER_T)
++#define VCHIQ_IOC_QUEUE_BULK_RECEIVE _IOW(VCHIQ_IOC_MAGIC, 6, VCHIQ_QUEUE_BULK_TRANSFER_T)
++#define VCHIQ_IOC_AWAIT_COMPLETION _IOW(VCHIQ_IOC_MAGIC, 7, VCHIQ_AWAIT_COMPLETION_T)
++#define VCHIQ_IOC_DEQUEUE_MESSAGE _IOW(VCHIQ_IOC_MAGIC, 8, VCHIQ_DEQUEUE_MESSAGE_T)
++#define VCHIQ_IOC_GET_CLIENT_ID _IO(VCHIQ_IOC_MAGIC, 9)
++#define VCHIQ_IOC_GET_CONFIG _IOW(VCHIQ_IOC_MAGIC, 10, VCHIQ_GET_CONFIG_T)
++#define VCHIQ_IOC_CLOSE_SERVICE _IO(VCHIQ_IOC_MAGIC, 11)
++#define VCHIQ_IOC_USE_SERVICE _IO(VCHIQ_IOC_MAGIC, 12)
++#define VCHIQ_IOC_RELEASE_SERVICE _IO(VCHIQ_IOC_MAGIC, 13)
++#define VCHIQ_IOC_SET_SERVICE_OPTION _IOW(VCHIQ_IOC_MAGIC, 14, VCHIQ_SET_SERVICE_OPTION_T)
++#define VCHIQ_IOC_DUMP_PHYS_MEM _IOW(VCHIQ_IOC_MAGIC, 15, VCHIQ_DUMP_MEM_T)
++#define VCHIQ_IOC_MAX 15
++
++#endif
+--- /dev/null
++++ b/drivers/misc/vc04_services/interface/vchiq_arm/vchiq_kern_lib.c
+@@ -0,0 +1,297 @@
++/*****************************************************************************
++* Copyright 2001 - 2011 Broadcom Corporation. All rights reserved.
++*
++* Unless you and Broadcom execute a separate written software license
++* agreement governing use of this software, this software is licensed to you
++* under the terms of the GNU General Public License version 2, available at
++* http://www.broadcom.com/licenses/GPLv2.php (the "GPL").
++*
++* Notwithstanding the above, under no circumstances may you combine this
++* software in any way with any other Broadcom software provided under a
++* license other than the GPL, without Broadcom's express prior written
++* consent.
++*****************************************************************************/
++
++/* ---- Include Files ---------------------------------------------------- */
++
++#include <linux/kernel.h>
++#include <linux/module.h>
++
++#include "vchiq_core.h"
++#include "vchiq_arm.h"
++#include "interface/vcos/vcos_logging.h"
++
++/* ---- Public Variables ------------------------------------------------- */
++
++extern VCOS_LOG_CAT_T vchiq_core_log_category;
++#define VCOS_LOG_CATEGORY (&vchiq_core_log_category)
++
++/* ---- Private Constants and Types -------------------------------------- */
++
++struct vchiq_instance_struct {
++ VCHIQ_STATE_T *state;
++
++ int connected;
++};
++
++/****************************************************************************
++*
++* vchiq_initialise
++*
++***************************************************************************/
++
++VCHIQ_STATUS_T vchiq_initialise( VCHIQ_INSTANCE_T *instanceOut )
++{
++ VCHIQ_STATUS_T status = VCHIQ_ERROR;
++ VCHIQ_STATE_T *state;
++ VCHIQ_INSTANCE_T instance = NULL;
++
++ vcos_log_trace( "%s called", __func__ );
++
++ state = vchiq_get_state();
++ if (!state)
++ {
++ printk( KERN_ERR "%s: videocore not initialized\n", __func__ );
++ goto failed;
++ }
++
++ instance = kzalloc( sizeof(*instance), GFP_KERNEL );
++ if( !instance )
++ {
++ printk( KERN_ERR "%s: error allocating vchiq instance\n", __func__ );
++ goto failed;
++ }
++
++ instance->connected = 0;
++ instance->state = state;
++
++ *instanceOut = instance;
++
++ status = VCHIQ_SUCCESS;
++
++failed:
++ vcos_log_trace( "%s(%p): returning %d", __func__, instance, status );
++
++ return status;
++}
++
++/****************************************************************************
++*
++* vchiq_shutdown
++*
++***************************************************************************/
++
++VCHIQ_STATUS_T vchiq_shutdown( VCHIQ_INSTANCE_T instance )
++{
++ VCHIQ_STATUS_T status;
++ VCHIQ_STATE_T *state = instance->state;
++
++ vcos_log_trace( "%s(%p) called", __func__, instance );
++
++ vcos_mutex_lock(&state->mutex);
++
++ /* Remove all services */
++ status = vchiq_shutdown_internal(state, instance);
++
++ vcos_mutex_unlock(&state->mutex);
++
++ if (status == VCHIQ_SUCCESS)
++ kfree(instance);
++
++ vcos_log_trace( "%s(%p): returning %d", __func__, instance, status );
++
++ return status;
++}
++
++/****************************************************************************
++*
++* vchiq_is_connected
++*
++***************************************************************************/
++
++int vchiq_is_connected(VCHIQ_INSTANCE_T instance)
++{
++ return instance->connected;
++}
++
++/****************************************************************************
++*
++* vchiq_connect
++*
++***************************************************************************/
++
++VCHIQ_STATUS_T vchiq_connect(VCHIQ_INSTANCE_T instance)
++{
++ VCHIQ_STATUS_T status;
++ VCHIQ_STATE_T *state = instance->state;
++
++ vcos_log_trace( "%s(%p) called", __func__, instance );
++
++ if (vcos_mutex_lock(&state->mutex) != VCOS_SUCCESS) {
++ vcos_log_trace( "%s: call to vcos_mutex_lock failed", __func__ );
++ status = VCHIQ_RETRY;
++ goto failed;
++ }
++ status = vchiq_connect_internal(state, instance);
++
++ if (status == VCHIQ_SUCCESS)
++ instance->connected = 1;
++
++ vcos_mutex_unlock(&state->mutex);
++
++failed:
++ vcos_log_trace( "%s(%p): returning %d", __func__, instance, status );
++
++ return status;
++}
++
++/****************************************************************************
++*
++* vchiq_add_service
++*
++***************************************************************************/
++
++VCHIQ_STATUS_T vchiq_add_service(
++ VCHIQ_INSTANCE_T instance,
++ int fourcc,
++ VCHIQ_CALLBACK_T callback,
++ void *userdata,
++ VCHIQ_SERVICE_HANDLE_T *pservice)
++{
++ VCHIQ_SERVICE_PARAMS_T params;
++
++ params.fourcc = fourcc;
++ params.callback = callback;
++ params.userdata = userdata;
++ params.version = 0;
++ params.version_min = 0;
++
++ return vchiq_add_service_params(instance, &params, pservice);
++}
++
++/****************************************************************************
++*
++* vchiq_open_service
++*
++***************************************************************************/
++
++VCHIQ_STATUS_T vchiq_open_service(
++ VCHIQ_INSTANCE_T instance,
++ int fourcc,
++ VCHIQ_CALLBACK_T callback,
++ void *userdata,
++ VCHIQ_SERVICE_HANDLE_T *pservice)
++{
++ VCHIQ_SERVICE_PARAMS_T params;
++
++ params.fourcc = fourcc;
++ params.callback = callback;
++ params.userdata = userdata;
++ params.version = 0;
++ params.version_min = 0;
++
++ return vchiq_open_service_params(instance, &params, pservice);
++}
++
++/****************************************************************************
++*
++* vchiq_add_service_params
++*
++***************************************************************************/
++
++VCHIQ_STATUS_T vchiq_add_service_params(
++ VCHIQ_INSTANCE_T instance,
++ const VCHIQ_SERVICE_PARAMS_T *params,
++ VCHIQ_SERVICE_HANDLE_T *pservice)
++{
++ VCHIQ_STATUS_T status;
++ VCHIQ_STATE_T *state = instance->state;
++ VCHIQ_SERVICE_T *service;
++ int srvstate;
++
++ vcos_log_trace( "%s(%p) called", __func__, instance );
++
++ *pservice = NULL;
++
++ srvstate = vchiq_is_connected( instance )
++ ? VCHIQ_SRVSTATE_LISTENING
++ : VCHIQ_SRVSTATE_HIDDEN;
++
++ vcos_mutex_lock(&state->mutex);
++
++ service = vchiq_add_service_internal(
++ state,
++ params,
++ srvstate,
++ instance);
++
++ vcos_mutex_unlock(&state->mutex);
++
++ if ( service )
++ {
++ *pservice = &service->base;
++ status = VCHIQ_SUCCESS;
++ }
++ else
++ {
++ status = VCHIQ_ERROR;
++ }
++
++ vcos_log_trace( "%s(%p): returning %d", __func__, instance, status );
++
++ return status;
++}
++
++/****************************************************************************
++*
++* vchiq_open_service_params
++*
++***************************************************************************/
++
++VCHIQ_STATUS_T vchiq_open_service_params(
++ VCHIQ_INSTANCE_T instance,
++ const VCHIQ_SERVICE_PARAMS_T *params,
++ VCHIQ_SERVICE_HANDLE_T *pservice)
++{
++ VCHIQ_STATUS_T status = VCHIQ_ERROR;
++ VCHIQ_STATE_T *state = instance->state;
++ VCHIQ_SERVICE_T *service;
++
++ vcos_log_trace( "%s(%p) called", __func__, instance );
++
++ *pservice = NULL;
++
++ if (!vchiq_is_connected(instance))
++ goto failed;
++
++ vcos_mutex_lock(&state->mutex);
++
++ service = vchiq_add_service_internal(state,
++ params,
++ VCHIQ_SRVSTATE_OPENING,
++ instance);
++
++ vcos_mutex_unlock(&state->mutex);
++
++ if ( service )
++ {
++ status = vchiq_open_service_internal(service, current->pid);
++ if ( status == VCHIQ_SUCCESS )
++ *pservice = &service->base;
++ else
++ vchiq_remove_service(&service->base);
++ }
++
++failed:
++ vcos_log_trace( "%s(%p): returning %d", __func__, instance, status );
++
++ return status;
++}
++
++EXPORT_SYMBOL(vchiq_initialise);
++EXPORT_SYMBOL(vchiq_shutdown);
++EXPORT_SYMBOL(vchiq_connect);
++EXPORT_SYMBOL(vchiq_add_service);
++EXPORT_SYMBOL(vchiq_open_service);
++EXPORT_SYMBOL(vchiq_add_service_params);
++EXPORT_SYMBOL(vchiq_open_service_params);
+--- /dev/null
++++ b/drivers/misc/vc04_services/interface/vchiq_arm/vchiq_lib.c
+@@ -0,0 +1,1518 @@
++/*
++ * Copyright (c) 2010-2011 Broadcom Corporation. All rights reserved.
++ *
++ * This program is free software; you can redistribute it and/or modify
++ * it under the terms of the GNU General Public License as published by
++ * the Free Software Foundation; either version 2 of the License, or
++ * (at your option) any later version.
++ *
++ * This program is distributed in the hope that it will be useful,
++ * but WITHOUT ANY WARRANTY; without even the implied warranty of
++ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
++ * GNU General Public License for more details.
++ *
++ * You should have received a copy of the GNU General Public License
++ * along with this program; if not, write to the Free Software
++ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
++ */
++
++#include <unistd.h>
++#include <fcntl.h>
++#include <sys/ioctl.h>
++#include <stdio.h>
++
++#include "vchiq.h"
++#include "vchiq_cfg.h"
++#include "vchiq_ioctl.h"
++#include "interface/vchi/vchi.h"
++#include "interface/vchi/common/endian.h"
++#include "interface/vcos/vcos.h"
++
++#define VCHIQ_MAX_INSTANCE_SERVICES 32
++#define MSGBUF_SIZE (VCHIQ_MAX_MSG_SIZE + sizeof(VCHIQ_HEADER_T))
++
++#define RETRY(r,x) do { r = x; } while ((r == -1) && (errno == EINTR))
++
++#define VCOS_LOG_CATEGORY (&vchiq_lib_log_category)
++
++typedef struct vchiq_service_struct
++{
++ VCHIQ_SERVICE_BASE_T base;
++ int handle;
++ int fd;
++ VCHI_CALLBACK_T vchi_callback;
++ void *peek_buf;
++ int peek_size;
++ int client_id;
++} VCHIQ_SERVICE_T;
++
++typedef struct vchiq_service_struct VCHI_SERVICE_T;
++
++struct vchiq_instance_struct
++{
++ int fd;
++ int initialised;
++ int connected;
++ VCOS_THREAD_T completion_thread;
++ VCOS_MUTEX_T mutex;
++ int used_services;
++ VCHIQ_SERVICE_T services[VCHIQ_MAX_INSTANCE_SERVICES];
++} vchiq_instance;
++
++typedef struct vchiq_instance_struct VCHI_STATE_T;
++
++/* Local data */
++static VCOS_LOG_LEVEL_T vchiq_default_lib_log_level = VCOS_LOG_WARN;
++static VCOS_LOG_CAT_T vchiq_lib_log_category;
++static VCOS_MUTEX_T vchiq_lib_mutex;
++static void *free_msgbufs;
++
++
++/* Local utility functions */
++static VCHIQ_INSTANCE_T
++vchiq_lib_init(void);
++
++static void *completion_thread(void *);
++
++static VCHIQ_STATUS_T
++create_service(VCHIQ_INSTANCE_T instance,
++ const VCHIQ_SERVICE_PARAMS_T *params,
++ VCHI_CALLBACK_T vchi_callback,
++ int is_open,
++ VCHIQ_SERVICE_HANDLE_T *pservice);
++
++static int
++fill_peek_buf(VCHI_SERVICE_T *service,
++ VCHI_FLAGS_T flags);
++
++static void *
++alloc_msgbuf(void);
++
++static void
++free_msgbuf(void *buf);
++
++static __inline int
++is_valid_instance(VCHIQ_INSTANCE_T instance)
++{
++ return (instance == &vchiq_instance) && (instance->initialised > 0);
++}
++
++/*
++ * VCHIQ API
++ */
++
++VCHIQ_STATUS_T
++vchiq_initialise(VCHIQ_INSTANCE_T *pinstance)
++{
++ VCHIQ_INSTANCE_T instance;
++
++ instance = vchiq_lib_init();
++
++ vcos_log_trace( "%s: returning instance handle %p", __func__, instance );
++
++ *pinstance = instance;
++
++ return (instance != NULL) ? VCHIQ_SUCCESS : VCHIQ_ERROR;
++}
++
++VCHIQ_STATUS_T
++vchiq_shutdown(VCHIQ_INSTANCE_T instance)
++{
++ vcos_log_trace( "%s called", __func__ );
++
++ if (!is_valid_instance(instance))
++ return VCHIQ_ERROR;
++
++ vcos_mutex_lock(&instance->mutex);
++
++ if (instance->initialised == 1)
++ {
++ int i;
++
++ instance->initialised = -1; /* Enter limbo */
++
++ /* Remove all services */
++
++ for (i = 0; i < instance->used_services; i++)
++ {
++ if (instance->services[i].handle != VCHIQ_INVALID_HANDLE)
++ {
++ vchiq_remove_service(&instance->services[i].base);
++ instance->services[i].handle = VCHIQ_INVALID_HANDLE;
++ }
++ }
++
++ if (instance->connected)
++ {
++ int ret;
++ RETRY(ret, ioctl(instance->fd, VCHIQ_IOC_SHUTDOWN, 0));
++ vcos_assert(ret == 0);
++ vcos_thread_join(&instance->completion_thread, NULL);
++ instance->connected = 0;
++ }
++
++ close(instance->fd);
++ instance->fd = -1;
++ }
++ else if (instance->initialised > 1)
++ {
++ instance->initialised--;
++ }
++
++ vcos_mutex_unlock(&instance->mutex);
++
++ vcos_global_lock();
++
++ if (instance->initialised == -1)
++ {
++ vcos_mutex_delete(&instance->mutex);
++ instance->initialised = 0;
++ }
++
++ vcos_global_unlock();
++
++ vcos_log_trace( "%s returning", __func__ );
++
++ return VCHIQ_SUCCESS;
++}
++
++VCHIQ_STATUS_T
++vchiq_connect(VCHIQ_INSTANCE_T instance)
++{
++ VCHIQ_STATUS_T status = VCHIQ_SUCCESS;
++
++ vcos_log_trace( "%s called", __func__ );
++
++ if (!is_valid_instance(instance))
++ return VCHIQ_ERROR;
++
++ vcos_mutex_lock(&instance->mutex);
++
++ if (!instance->connected)
++ {
++ int ret = ioctl(instance->fd, VCHIQ_IOC_CONNECT, 0);
++ if (ret == 0)
++ {
++ VCOS_THREAD_ATTR_T attrs;
++ instance->connected = 1;
++ vcos_thread_attr_init(&attrs);
++ vcos_thread_create(&instance->completion_thread, "VCHIQ completion",
++ &attrs, completion_thread, instance);
++ }
++ else
++ {
++ status = VCHIQ_ERROR;
++ }
++ }
++
++ vcos_mutex_unlock(&instance->mutex);
++
++ return status;
++}
++
++VCHIQ_STATUS_T
++vchiq_add_service(VCHIQ_INSTANCE_T instance,
++ int fourcc,
++ VCHIQ_CALLBACK_T callback,
++ void *userdata,
++ VCHIQ_SERVICE_HANDLE_T *pservice)
++{
++ VCHIQ_SERVICE_PARAMS_T params;
++
++ params.fourcc = fourcc;
++ params.callback = callback;
++ params.userdata = userdata;
++ params.version = 0;
++ params.version_min = 0;
++
++ return vchiq_add_service_params(instance, &params, pservice);
++}
++
++VCHIQ_STATUS_T
++vchiq_open_service(VCHIQ_INSTANCE_T instance,
++ int fourcc,
++ VCHIQ_CALLBACK_T callback,
++ void *userdata,
++ VCHIQ_SERVICE_HANDLE_T *pservice)
++{
++ VCHIQ_SERVICE_PARAMS_T params;
++
++ params.fourcc = fourcc;
++ params.callback = callback;
++ params.userdata = userdata;
++ params.version = 0;
++ params.version_min = 0;
++
++ return vchiq_open_service_params(instance, &params, pservice);
++}
++
++VCHIQ_STATUS_T
++vchiq_add_service_params(VCHIQ_INSTANCE_T instance,
++ const VCHIQ_SERVICE_PARAMS_T *params,
++ VCHIQ_SERVICE_HANDLE_T *pservice)
++{
++ VCHIQ_STATUS_T status;
++
++ vcos_log_trace( "%s called fourcc = 0x%08x (%c%c%c%c)",
++ __func__,
++ params->fourcc,
++ (params->fourcc >> 24) & 0xff,
++ (params->fourcc >> 16) & 0xff,
++ (params->fourcc >> 8) & 0xff,
++ (params->fourcc ) & 0xff );
++
++ if (!params->callback)
++ return VCHIQ_ERROR;
++
++ if (!is_valid_instance(instance))
++ return VCHIQ_ERROR;
++
++ status = create_service(instance,
++ params,
++ NULL/*vchi_callback*/,
++ 0/*!open*/,
++ pservice);
++
++ vcos_log_trace( "%s returning service handle = 0x%08x", __func__, (uint32_t)*pservice );
++
++ return status;
++}
++
++VCHIQ_STATUS_T
++vchiq_open_service_params(VCHIQ_INSTANCE_T instance,
++ const VCHIQ_SERVICE_PARAMS_T *params,
++ VCHIQ_SERVICE_HANDLE_T *pservice)
++{
++ VCHIQ_STATUS_T status;
++
++ vcos_log_trace( "%s called fourcc = 0x%08x (%c%c%c%c)",
++ __func__,
++ params->fourcc,
++ (params->fourcc >> 24) & 0xff,
++ (params->fourcc >> 16) & 0xff,
++ (params->fourcc >> 8) & 0xff,
++ (params->fourcc ) & 0xff );
++
++ if (!params->callback)
++ return VCHIQ_ERROR;
++
++ if (!is_valid_instance(instance))
++ return VCHIQ_ERROR;
++
++ status = create_service(instance,
++ params,
++ NULL/*vchi_callback*/,
++ 1/*open*/,
++ pservice);
++
++ vcos_log_trace( "%s returning service handle = 0x%08x", __func__, (uint32_t)*pservice );
++
++ return status;
++}
++
++VCHIQ_STATUS_T
++vchiq_close_service(VCHIQ_SERVICE_HANDLE_T handle)
++{
++ VCHIQ_SERVICE_T *service = (VCHIQ_SERVICE_T *)handle;
++ int ret;
++
++ vcos_log_trace( "%s called service handle = 0x%08x", __func__, (uint32_t)handle );
++
++ RETRY(ret,ioctl(service->fd, VCHIQ_IOC_CLOSE_SERVICE, service->handle));
++
++ if (ret != 0)
++ return VCHIQ_ERROR;
++
++ service->handle = VCHIQ_INVALID_HANDLE;
++ return VCHIQ_SUCCESS;
++}
++
++VCHIQ_STATUS_T
++vchiq_remove_service(VCHIQ_SERVICE_HANDLE_T handle)
++{
++ VCHIQ_SERVICE_T *service = (VCHIQ_SERVICE_T *)handle;
++ int ret;
++
++ vcos_log_trace( "%s called service handle = 0x%08x", __func__, (uint32_t)handle );
++
++ RETRY(ret,ioctl(service->fd, VCHIQ_IOC_REMOVE_SERVICE, service->handle));
++
++ if (ret != 0)
++ return VCHIQ_ERROR;
++
++ service->handle = VCHIQ_INVALID_HANDLE;
++ return VCHIQ_SUCCESS;
++}
++
++VCHIQ_STATUS_T
++vchiq_queue_message(VCHIQ_SERVICE_HANDLE_T handle,
++ const VCHIQ_ELEMENT_T *elements,
++ int count)
++{
++ VCHIQ_SERVICE_T *service = (VCHIQ_SERVICE_T *)handle;
++ VCHIQ_QUEUE_MESSAGE_T args;
++ int ret;
++
++ vcos_log_trace( "%s called service handle = 0x%08x", __func__, (uint32_t)handle );
++
++ args.handle = service->handle;
++ args.elements = elements;
++ args.count = count;
++ RETRY(ret, ioctl(service->fd, VCHIQ_IOC_QUEUE_MESSAGE, &args));
++
++ return (ret >= 0) ? VCHIQ_SUCCESS : VCHIQ_ERROR;
++}
++
++void
++vchiq_release_message(VCHIQ_SERVICE_HANDLE_T handle,
++ VCHIQ_HEADER_T *header)
++{
++ vcos_log_trace( "%s handle=%08x, header=%x", __func__, (uint32_t)handle, (uint32_t)header );
++
++ free_msgbuf(header);
++}
++
++VCHIQ_STATUS_T
++vchiq_queue_bulk_transmit(VCHIQ_SERVICE_HANDLE_T handle,
++ const void *data,
++ int size,
++ void *userdata)
++{
++ VCHIQ_SERVICE_T *service = (VCHIQ_SERVICE_T *)handle;
++ VCHIQ_QUEUE_BULK_TRANSFER_T args;
++ int ret;
++
++ vcos_log_trace( "%s called service handle = 0x%08x", __func__, (uint32_t)handle );
++
++ args.handle = service->handle;
++ args.data = (void *)data;
++ args.size = size;
++ args.userdata = userdata;
++ args.mode = VCHIQ_BULK_MODE_CALLBACK;
++ RETRY(ret, ioctl(service->fd, VCHIQ_IOC_QUEUE_BULK_TRANSMIT, &args));
++
++ return (ret >= 0) ? VCHIQ_SUCCESS : VCHIQ_ERROR;
++}
++
++VCHIQ_STATUS_T
++vchiq_queue_bulk_receive(VCHIQ_SERVICE_HANDLE_T handle,
++ void *data,
++ int size,
++ void *userdata)
++{
++ VCHIQ_SERVICE_T *service = (VCHIQ_SERVICE_T *)handle;
++ VCHIQ_QUEUE_BULK_TRANSFER_T args;
++ int ret;
++
++ vcos_log_trace( "%s called service handle = 0x%08x", __func__, (uint32_t)handle );
++
++ args.handle = service->handle;
++ args.data = data;
++ args.size = size;
++ args.userdata = userdata;
++ args.mode = VCHIQ_BULK_MODE_CALLBACK;
++ RETRY(ret, ioctl(service->fd, VCHIQ_IOC_QUEUE_BULK_RECEIVE, &args));
++
++ return (ret >= 0) ? VCHIQ_SUCCESS : VCHIQ_ERROR;
++}
++
++VCHIQ_STATUS_T
++vchiq_queue_bulk_transmit_handle(VCHIQ_SERVICE_HANDLE_T handle,
++ VCHI_MEM_HANDLE_T memhandle,
++ const void *offset,
++ int size,
++ void *userdata)
++{
++ vcos_assert(memhandle == VCHI_MEM_HANDLE_INVALID);
++
++ vcos_log_trace( "%s called service handle = 0x%08x", __func__, (uint32_t)handle );
++
++ return vchiq_queue_bulk_transmit(handle, offset, size, userdata);
++}
++
++VCHIQ_STATUS_T
++vchiq_queue_bulk_receive_handle(VCHIQ_SERVICE_HANDLE_T handle,
++ VCHI_MEM_HANDLE_T memhandle,
++ void *offset,
++ int size,
++ void *userdata)
++{
++ vcos_assert(memhandle == VCHI_MEM_HANDLE_INVALID);
++
++ vcos_log_trace( "%s called service handle = 0x%08x", __func__, (uint32_t)handle );
++
++ return vchiq_queue_bulk_receive(handle, offset, size, userdata);
++}
++
++VCHIQ_STATUS_T
++vchiq_bulk_transmit(VCHIQ_SERVICE_HANDLE_T handle,
++ const void *data,
++ int size,
++ void *userdata,
++ VCHIQ_BULK_MODE_T mode)
++{
++ VCHIQ_SERVICE_T *service = (VCHIQ_SERVICE_T *)handle;
++ VCHIQ_QUEUE_BULK_TRANSFER_T args;
++ int ret;
++
++ vcos_log_trace( "%s called service handle = 0x%08x", __func__, (uint32_t)handle );
++
++ args.handle = service->handle;
++ args.data = (void *)data;
++ args.size = size;
++ args.userdata = userdata;
++ args.mode = mode;
++ RETRY(ret, ioctl(service->fd, VCHIQ_IOC_QUEUE_BULK_TRANSMIT, &args));
++
++ return (ret >= 0) ? VCHIQ_SUCCESS : VCHIQ_ERROR;
++}
++
++VCHIQ_STATUS_T
++vchiq_bulk_receive(VCHIQ_SERVICE_HANDLE_T handle,
++ void *data,
++ int size,
++ void *userdata,
++ VCHIQ_BULK_MODE_T mode)
++{
++ VCHIQ_SERVICE_T *service = (VCHIQ_SERVICE_T *)handle;
++ VCHIQ_QUEUE_BULK_TRANSFER_T args;
++ int ret;
++
++ vcos_log_trace( "%s called service handle = 0x%08x", __func__, (uint32_t)handle );
++
++ args.handle = service->handle;
++ args.data = data;
++ args.size = size;
++ args.userdata = userdata;
++ args.mode = mode;
++ RETRY(ret, ioctl(service->fd, VCHIQ_IOC_QUEUE_BULK_RECEIVE, &args));
++
++ return (ret >= 0) ? VCHIQ_SUCCESS : VCHIQ_ERROR;
++}
++
++VCHIQ_STATUS_T
++vchiq_bulk_transmit_handle(VCHIQ_SERVICE_HANDLE_T handle,
++ VCHI_MEM_HANDLE_T memhandle,
++ const void *offset,
++ int size,
++ void *userdata,
++ VCHIQ_BULK_MODE_T mode)
++{
++ vcos_assert(memhandle == VCHI_MEM_HANDLE_INVALID);
++
++ return vchiq_bulk_transmit(handle, offset, size, userdata, mode);
++}
++
++VCHIQ_STATUS_T
++vchiq_bulk_receive_handle(VCHIQ_SERVICE_HANDLE_T handle,
++ VCHI_MEM_HANDLE_T memhandle,
++ void *offset,
++ int size,
++ void *userdata,
++ VCHIQ_BULK_MODE_T mode)
++{
++ vcos_assert(memhandle == VCHI_MEM_HANDLE_INVALID);
++
++ return vchiq_bulk_receive(handle, offset, size, userdata, mode);
++}
++
++int
++vchiq_get_client_id(VCHIQ_SERVICE_HANDLE_T handle)
++{
++ VCHIQ_SERVICE_T *service = (VCHIQ_SERVICE_T *)handle;
++
++ return ioctl(service->fd, VCHIQ_IOC_GET_CLIENT_ID, service->handle);
++}
++
++VCHIQ_STATUS_T
++vchiq_get_config(VCHIQ_INSTANCE_T instance,
++ int config_size,
++ VCHIQ_CONFIG_T *pconfig)
++{
++ VCHIQ_GET_CONFIG_T args;
++ int ret;
++
++ if (!is_valid_instance(instance))
++ return VCHIQ_ERROR;
++
++ args.config_size = config_size;
++ args.pconfig = pconfig;
++
++ RETRY(ret, ioctl(instance->fd, VCHIQ_IOC_GET_CONFIG, &args));
++
++ return (ret >= 0) ? VCHIQ_SUCCESS : VCHIQ_ERROR;
++}
++
++int32_t
++vchiq_use_service( const VCHIQ_SERVICE_HANDLE_T handle )
++{
++ VCHIQ_SERVICE_T *service = (VCHIQ_SERVICE_T *)handle;
++ int ret;
++ RETRY(ret,ioctl(service->fd, VCHIQ_IOC_USE_SERVICE, service->handle));
++ return ret;
++}
++
++int32_t
++vchiq_release_service( const VCHIQ_SERVICE_HANDLE_T handle )
++{
++ VCHIQ_SERVICE_T *service = (VCHIQ_SERVICE_T *)handle;
++ int ret;
++ RETRY(ret,ioctl(service->fd, VCHIQ_IOC_RELEASE_SERVICE, service->handle));
++ return ret;
++}
++
++VCHIQ_STATUS_T
++vchiq_set_service_option(VCHIQ_SERVICE_HANDLE_T handle,
++ VCHIQ_SERVICE_OPTION_T option, int value)
++{
++ VCHIQ_SET_SERVICE_OPTION_T args;
++ VCHIQ_SERVICE_T *service = (VCHIQ_SERVICE_T *)handle;
++ int ret;
++
++ args.handle = service->handle;
++ args.option = option;
++ args.value = value;
++
++ RETRY(ret, ioctl(service->fd, VCHIQ_IOC_SET_SERVICE_OPTION, &args));
++
++ return (ret >= 0) ? VCHIQ_SUCCESS : VCHIQ_ERROR;
++}
++
++/*
++ * VCHI API
++ */
++
++/* ----------------------------------------------------------------------
++ * return pointer to the mphi message driver function table
++ * -------------------------------------------------------------------- */
++const VCHI_MESSAGE_DRIVER_T *
++vchi_mphi_message_driver_func_table( void )
++{
++ return NULL;
++}
++
++/* ----------------------------------------------------------------------
++ * return a pointer to the 'single' connection driver fops
++ * -------------------------------------------------------------------- */
++const VCHI_CONNECTION_API_T *
++single_get_func_table( void )
++{
++ return NULL;
++}
++
++VCHI_CONNECTION_T *
++vchi_create_connection( const VCHI_CONNECTION_API_T * function_table,
++ const VCHI_MESSAGE_DRIVER_T * low_level )
++{
++ vcos_unused(function_table);
++ vcos_unused(low_level);
++
++ return NULL;
++}
++
++/***********************************************************
++ * Name: vchi_msg_peek
++ *
++ * Arguments: const VCHI_SERVICE_HANDLE_T handle,
++ * void **data,
++ * uint32_t *msg_size,
++ * VCHI_FLAGS_T flags
++ *
++ * Description: Routine to return a pointer to the current message (to allow in place processing)
++ * The message can be removed using vchi_msg_remove when you're finished
++ *
++ * Returns: int32_t - success == 0
++ *
++ ***********************************************************/
++int32_t
++vchi_msg_peek( VCHI_SERVICE_HANDLE_T handle,
++ void **data,
++ uint32_t *msg_size,
++ VCHI_FLAGS_T flags )
++{
++ VCHI_SERVICE_T *service = (VCHI_SERVICE_T *)handle;
++ int ret;
++
++ ret = fill_peek_buf(service, flags);
++
++ if (ret == 0)
++ {
++ *data = service->peek_buf;
++ *msg_size = service->peek_size;
++ }
++
++ return ret;
++}
++
++/***********************************************************
++ * Name: vchi_msg_remove
++ *
++ * Arguments: const VCHI_SERVICE_HANDLE_T handle,
++ *
++ * Description: Routine to remove a message (after it has been read with vchi_msg_peek)
++ *
++ * Returns: int32_t - success == 0
++ *
++ ***********************************************************/
++int32_t
++vchi_msg_remove( VCHI_SERVICE_HANDLE_T handle )
++{
++ VCHI_SERVICE_T *service = (VCHI_SERVICE_T *)handle;
++
++ /* Why would you call vchi_msg_remove without calling vchi_msg_peek first? */
++ vcos_assert(service->peek_size >= 0);
++
++ /* Invalidate the content but reuse the buffer */
++ service->peek_size = -1;
++
++ return 0;
++}
++
++/***********************************************************
++ * Name: vchi_msg_queue
++ *
++ * Arguments: VCHI_SERVICE_HANDLE_T handle,
++ * const void *data,
++ * uint32_t data_size,
++ * VCHI_FLAGS_T flags,
++ * void *msg_handle,
++ *
++ * Description: Thin wrapper to queue a message onto a connection
++ *
++ * Returns: int32_t - success == 0
++ *
++ ***********************************************************/
++int32_t
++vchi_msg_queue( VCHI_SERVICE_HANDLE_T handle,
++ const void * data,
++ uint32_t data_size,
++ VCHI_FLAGS_T flags,
++ void * msg_handle )
++{
++ VCHI_SERVICE_T *service = (VCHI_SERVICE_T *)handle;
++ VCHIQ_QUEUE_MESSAGE_T args;
++ VCHIQ_ELEMENT_T element = {data, data_size};
++ int ret;
++
++ vcos_unused(msg_handle);
++ vcos_assert(flags == VCHI_FLAGS_BLOCK_UNTIL_QUEUED);
++
++ args.handle = service->handle;
++ args.elements = &element;
++ args.count = 1;
++ RETRY(ret, ioctl(service->fd, VCHIQ_IOC_QUEUE_MESSAGE, &args));
++
++ return ret;
++}
++
++/***********************************************************
++ * Name: vchi_bulk_queue_receive
++ *
++ * Arguments: VCHI_BULK_HANDLE_T handle,
++ * void *data_dst,
++ * const uint32_t data_size,
++ * VCHI_FLAGS_T flags
++ * void *bulk_handle
++ *
++ * Description: Routine to setup a rcv buffer
++ *
++ * Returns: int32_t - success == 0
++ *
++ ***********************************************************/
++int32_t
++vchi_bulk_queue_receive( VCHI_SERVICE_HANDLE_T handle,
++ void * data_dst,
++ uint32_t data_size,
++ VCHI_FLAGS_T flags,
++ void * bulk_handle )
++{
++ VCHI_SERVICE_T *service = (VCHI_SERVICE_T *)handle;
++ VCHIQ_QUEUE_BULK_TRANSFER_T args;
++ int ret;
++
++ switch ((int)flags) {
++ case VCHI_FLAGS_CALLBACK_WHEN_OP_COMPLETE | VCHI_FLAGS_BLOCK_UNTIL_QUEUED:
++ args.mode = VCHIQ_BULK_MODE_CALLBACK;
++ break;
++ case VCHI_FLAGS_BLOCK_UNTIL_OP_COMPLETE:
++ args.mode = VCHIQ_BULK_MODE_BLOCKING;
++ break;
++ case VCHI_FLAGS_BLOCK_UNTIL_QUEUED:
++ case VCHI_FLAGS_NONE:
++ args.mode = VCHIQ_BULK_MODE_NOCALLBACK;
++ break;
++ default:
++ vcos_assert(0);
++ break;
++ }
++
++ args.handle = service->handle;
++ args.data = data_dst;
++ args.size = data_size;
++ args.userdata = bulk_handle;
++ RETRY(ret, ioctl(service->fd, VCHIQ_IOC_QUEUE_BULK_RECEIVE, &args));
++
++ return ret;
++}
++
++/***********************************************************
++ * Name: vchi_bulk_queue_transmit
++ *
++ * Arguments: VCHI_BULK_HANDLE_T handle,
++ * const void *data_src,
++ * uint32_t data_size,
++ * VCHI_FLAGS_T flags,
++ * void *bulk_handle
++ *
++ * Description: Routine to transmit some data
++ *
++ * Returns: int32_t - success == 0
++ *
++ ***********************************************************/
++int32_t
++vchi_bulk_queue_transmit( VCHI_SERVICE_HANDLE_T handle,
++ const void * data_src,
++ uint32_t data_size,
++ VCHI_FLAGS_T flags,
++ void * bulk_handle )
++{
++ VCHI_SERVICE_T *service = (VCHI_SERVICE_T *)handle;
++ VCHIQ_QUEUE_BULK_TRANSFER_T args;
++ int ret;
++
++ switch ((int)flags) {
++ case VCHI_FLAGS_CALLBACK_WHEN_OP_COMPLETE | VCHI_FLAGS_BLOCK_UNTIL_QUEUED:
++ args.mode = VCHIQ_BULK_MODE_CALLBACK;
++ break;
++ case VCHI_FLAGS_BLOCK_UNTIL_DATA_READ:
++ case VCHI_FLAGS_BLOCK_UNTIL_OP_COMPLETE:
++ args.mode = VCHIQ_BULK_MODE_BLOCKING;
++ break;
++ case VCHI_FLAGS_BLOCK_UNTIL_QUEUED:
++ case VCHI_FLAGS_NONE:
++ args.mode = VCHIQ_BULK_MODE_NOCALLBACK;
++ break;
++ default:
++ vcos_assert(0);
++ break;
++ }
++
++ args.handle = service->handle;
++ args.data = (void *)data_src;
++ args.size = data_size;
++ args.userdata = bulk_handle;
++ RETRY(ret, ioctl(service->fd, VCHIQ_IOC_QUEUE_BULK_TRANSMIT, &args));
++
++ return ret;
++}
++
++/***********************************************************
++ * Name: vchi_msg_dequeue
++ *
++ * Arguments: VCHI_SERVICE_HANDLE_T handle,
++ * void *data,
++ * uint32_t max_data_size_to_read,
++ * uint32_t *actual_msg_size
++ * VCHI_FLAGS_T flags
++ *
++ * Description: Routine to dequeue a message into the supplied buffer
++ *
++ * Returns: int32_t - success == 0
++ *
++ ***********************************************************/
++int32_t
++vchi_msg_dequeue( VCHI_SERVICE_HANDLE_T handle,
++ void *data,
++ uint32_t max_data_size_to_read,
++ uint32_t *actual_msg_size,
++ VCHI_FLAGS_T flags )
++{
++ VCHI_SERVICE_T *service = (VCHI_SERVICE_T *)handle;
++ VCHIQ_DEQUEUE_MESSAGE_T args;
++ int ret;
++
++ vcos_assert(flags == VCHI_FLAGS_NONE || flags == VCHI_FLAGS_BLOCK_UNTIL_OP_COMPLETE);
++
++ if (service->peek_size >= 0)
++ {
++ fprintf(stderr, "vchi_msg_dequeue -> using peek buffer\n");
++ if ((uint32_t)service->peek_size <= max_data_size_to_read)
++ {
++ memcpy(data, service->peek_buf, service->peek_size);
++ *actual_msg_size = service->peek_size;
++ /* Invalidate the peek data, but retain the buffer */
++ service->peek_size = -1;
++ ret = 0;
++ }
++ else
++ {
++ ret = -1;
++ }
++ }
++ else
++ {
++ args.handle = service->handle;
++ args.blocking = (flags == VCHI_FLAGS_BLOCK_UNTIL_OP_COMPLETE);
++ args.bufsize = max_data_size_to_read;
++ args.buf = data;
++ RETRY(ret, ioctl(service->fd, VCHIQ_IOC_DEQUEUE_MESSAGE, &args));
++ if (ret >= 0)
++ {
++ *actual_msg_size = ret;
++ ret = 0;
++ }
++ }
++
++ if ((ret < 0) && (errno != EWOULDBLOCK))
++ fprintf(stderr, "vchi_msg_dequeue -> %d(%d)\n", ret, errno);
++
++ return ret;
++}
++
++/***********************************************************
++ * Name: vchi_msg_queuev
++ *
++ * Arguments: VCHI_SERVICE_HANDLE_T handle,
++ * const void *data,
++ * uint32_t data_size,
++ * VCHI_FLAGS_T flags,
++ * void *msg_handle
++ *
++ * Description: Thin wrapper to queue a message onto a connection
++ *
++ * Returns: int32_t - success == 0
++ *
++ ***********************************************************/
++
++vcos_static_assert(sizeof(VCHI_MSG_VECTOR_T) == sizeof(VCHIQ_ELEMENT_T));
++vcos_static_assert(offsetof(VCHI_MSG_VECTOR_T, vec_base) == offsetof(VCHIQ_ELEMENT_T, data));
++vcos_static_assert(offsetof(VCHI_MSG_VECTOR_T, vec_len) == offsetof(VCHIQ_ELEMENT_T, size));
++
++int32_t
++vchi_msg_queuev( VCHI_SERVICE_HANDLE_T handle,
++ VCHI_MSG_VECTOR_T * vector,
++ uint32_t count,
++ VCHI_FLAGS_T flags,
++ void *msg_handle )
++{
++ VCHI_SERVICE_T *service = (VCHI_SERVICE_T *)handle;
++ VCHIQ_QUEUE_MESSAGE_T args;
++ int ret;
++
++ vcos_unused(msg_handle);
++
++ vcos_assert(flags == VCHI_FLAGS_BLOCK_UNTIL_QUEUED);
++
++ args.handle = service->handle;
++ args.elements = (const VCHIQ_ELEMENT_T *)vector;
++ args.count = count;
++ RETRY(ret, ioctl(service->fd, VCHIQ_IOC_QUEUE_MESSAGE, &args));
++
++ return ret;
++}
++
++/***********************************************************
++ * Name: vchi_held_msg_release
++ *
++ * Arguments: VCHI_HELD_MSG_T *message
++ *
++ * Description: Routine to release a held message (after it has been read with vchi_msg_hold)
++ *
++ * Returns: int32_t - success == 0
++ *
++ ***********************************************************/
++int32_t
++vchi_held_msg_release( VCHI_HELD_MSG_T *message )
++{
++ int ret = -1;
++
++ if (message && message->message && !message->service)
++ {
++ free_msgbuf(message->message);
++ ret = 0;
++ }
++
++ return ret;
++}
++
++/***********************************************************
++ * Name: vchi_msg_hold
++ *
++ * Arguments: VCHI_SERVICE_HANDLE_T handle,
++ * void **data,
++ * uint32_t *msg_size,
++ * VCHI_FLAGS_T flags,
++ * VCHI_HELD_MSG_T *message_handle
++ *
++ * Description: Routine to return a pointer to the current message (to allow in place processing)
++ * The message is dequeued - don't forget to release the message using
++ * vchi_held_msg_release when you're finished
++ *
++ * Returns: int32_t - success == 0
++ *
++ ***********************************************************/
++int32_t
++vchi_msg_hold( VCHI_SERVICE_HANDLE_T handle,
++ void **data,
++ uint32_t *msg_size,
++ VCHI_FLAGS_T flags,
++ VCHI_HELD_MSG_T *message_handle )
++{
++ VCHI_SERVICE_T *service = (VCHI_SERVICE_T *)handle;
++ int ret;
++
++ ret = fill_peek_buf(service, flags);
++
++ if (ret == 0)
++ {
++ *data = service->peek_buf;
++ *msg_size = service->peek_size;
++
++ message_handle->message = service->peek_buf;
++ message_handle->service = NULL;
++
++ service->peek_size = -1;
++ service->peek_buf = NULL;
++ }
++
++ return 0;
++}
++
++/***********************************************************
++ * Name: vchi_initialise
++ *
++ * Arguments: VCHI_INSTANCE_T *instance_handle
++ * VCHI_CONNECTION_T **connections
++ * const uint32_t num_connections
++ *
++ * Description: Initialises the hardware but does not transmit anything
++ * When run as a Host App this will be called twice hence the need
++ * to malloc the state information
++ *
++ * Returns: 0 if successful, failure otherwise
++ *
++ ***********************************************************/
++int32_t
++vchi_initialise( VCHI_INSTANCE_T *instance_handle )
++{
++ VCHIQ_INSTANCE_T instance;
++
++ instance = vchiq_lib_init();
++
++ vcos_log_trace( "%s: returning instance handle %p", __func__, instance );
++
++ *instance_handle = (VCHI_INSTANCE_T)instance;
++
++ return (instance != NULL) ? 0 : -1;
++}
++
++/***********************************************************
++ * Name: vchi_connect
++ *
++ * Arguments: VCHI_CONNECTION_T **connections
++ * const uint32_t num_connections
++ * VCHI_INSTANCE_T instance_handle )
++ *
++ * Description: Starts the command service on each connection,
++ * causing INIT messages to be pinged back and forth
++ *
++ * Returns: 0 if successful, failure otherwise
++ *
++ ***********************************************************/
++int32_t
++vchi_connect( VCHI_CONNECTION_T **connections,
++ const uint32_t num_connections,
++ VCHI_INSTANCE_T instance_handle )
++{
++ VCHIQ_STATUS_T status;
++
++ vcos_unused(connections);
++ vcos_unused(num_connections);
++
++ status = vchiq_connect((VCHIQ_INSTANCE_T)instance_handle);
++
++ return (status == VCHIQ_SUCCESS) ? 0 : -1;
++}
++
++
++/***********************************************************
++ * Name: vchi_disconnect
++ *
++ * Arguments: VCHI_INSTANCE_T instance_handle
++ *
++ * Description: Stops the command service on each connection,
++ * causing DE-INIT messages to be pinged back and forth
++ *
++ * Returns: 0 if successful, failure otherwise
++ *
++ ***********************************************************/
++int32_t
++vchi_disconnect( VCHI_INSTANCE_T instance_handle )
++{
++ VCHIQ_STATUS_T status;
++
++ status = vchiq_shutdown((VCHIQ_INSTANCE_T)instance_handle);
++
++ return (status == VCHIQ_SUCCESS) ? 0 : -1;
++}
++
++
++/***********************************************************
++ * Name: vchi_service_open
++ * Name: vchi_service_create
++ *
++ * Arguments: VCHI_INSTANCE_T *instance_handle
++ * SERVICE_CREATION_T *setup,
++ * VCHI_SERVICE_HANDLE_T *handle
++ *
++ * Description: Routine to open a service
++ *
++ * Returns: int32_t - success == 0
++ *
++ ***********************************************************/
++int32_t
++vchi_service_open( VCHI_INSTANCE_T instance_handle,
++ SERVICE_CREATION_T *setup,
++ VCHI_SERVICE_HANDLE_T *handle )
++{
++ VCHIQ_SERVICE_PARAMS_T params;
++ VCHIQ_STATUS_T status;
++
++ memset(&params, 0, sizeof(params));
++ params.fourcc = setup->service_id;
++ params.userdata = setup->callback_param;
++
++ status = create_service((VCHIQ_INSTANCE_T)instance_handle,
++ &params,
++ setup->callback,
++ 1/*open*/,
++ (VCHIQ_SERVICE_HANDLE_T *)handle);
++
++ return (status == VCHIQ_SUCCESS) ? 0 : -1;
++}
++
++int32_t
++vchi_service_create( VCHI_INSTANCE_T instance_handle,
++ SERVICE_CREATION_T *setup, VCHI_SERVICE_HANDLE_T *handle )
++{
++ VCHIQ_SERVICE_PARAMS_T params;
++ VCHIQ_STATUS_T status;
++
++ memset(&params, 0, sizeof(params));
++ params.fourcc = setup->service_id;
++ params.userdata = setup->callback_param;
++
++ status = create_service((VCHIQ_INSTANCE_T)instance_handle,
++ &params,
++ setup->callback,
++ 0/*!open*/,
++ (VCHIQ_SERVICE_HANDLE_T *)handle);
++
++ return (status == VCHIQ_SUCCESS) ? 0 : -1;
++}
++
++int32_t
++vchi_service_close( const VCHI_SERVICE_HANDLE_T handle )
++{
++ VCHI_SERVICE_T *service = (VCHI_SERVICE_T *)handle;
++ int ret;
++ RETRY(ret,ioctl(service->fd, VCHIQ_IOC_REMOVE_SERVICE, service->handle));
++
++ if (ret == 0)
++ service->handle = VCHIQ_INVALID_HANDLE;
++
++ return ret;
++}
++
++int32_t
++vchi_service_destroy( const VCHI_SERVICE_HANDLE_T handle )
++{
++ VCHI_SERVICE_T *service = (VCHI_SERVICE_T *)handle;
++ int ret;
++ RETRY(ret,ioctl(service->fd, VCHIQ_IOC_REMOVE_SERVICE, service->handle));
++
++ if (ret == 0)
++ service->handle = VCHIQ_INVALID_HANDLE;
++
++ return ret;
++}
++
++/* ----------------------------------------------------------------------
++ * read a uint32_t from buffer.
++ * network format is defined to be little endian
++ * -------------------------------------------------------------------- */
++uint32_t
++vchi_readbuf_uint32( const void *_ptr )
++{
++ const unsigned char *ptr = _ptr;
++ return ptr[0] | (ptr[1] << 8) | (ptr[2] << 16) | (ptr[3] << 24);
++}
++
++/* ----------------------------------------------------------------------
++ * write a uint32_t to buffer.
++ * network format is defined to be little endian
++ * -------------------------------------------------------------------- */
++void
++vchi_writebuf_uint32( void *_ptr, uint32_t value )
++{
++ unsigned char *ptr = _ptr;
++ ptr[0] = (unsigned char)((value >> 0) & 0xFF);
++ ptr[1] = (unsigned char)((value >> 8) & 0xFF);
++ ptr[2] = (unsigned char)((value >> 16) & 0xFF);
++ ptr[3] = (unsigned char)((value >> 24) & 0xFF);
++}
++
++/* ----------------------------------------------------------------------
++ * read a uint16_t from buffer.
++ * network format is defined to be little endian
++ * -------------------------------------------------------------------- */
++uint16_t
++vchi_readbuf_uint16( const void *_ptr )
++{
++ const unsigned char *ptr = _ptr;
++ return ptr[0] | (ptr[1] << 8);
++}
++
++/* ----------------------------------------------------------------------
++ * write a uint16_t into the buffer.
++ * network format is defined to be little endian
++ * -------------------------------------------------------------------- */
++void
++vchi_writebuf_uint16( void *_ptr, uint16_t value )
++{
++ unsigned char *ptr = _ptr;
++ ptr[0] = (value >> 0) & 0xFF;
++ ptr[1] = (value >> 8) & 0xFF;
++}
++
++/***********************************************************
++ * Name: vchi_service_use
++ *
++ * Arguments: const VCHI_SERVICE_HANDLE_T handle
++ *
++ * Description: Routine to increment refcount on a service
++ *
++ * Returns: void
++ *
++ ***********************************************************/
++int32_t
++vchi_service_use( const VCHI_SERVICE_HANDLE_T handle )
++{
++ VCHI_SERVICE_T *service = (VCHI_SERVICE_T *)handle;
++ int ret;
++ RETRY(ret,ioctl(service->fd, VCHIQ_IOC_USE_SERVICE, service->handle));
++ return ret;
++}
++
++/***********************************************************
++ * Name: vchi_service_release
++ *
++ * Arguments: const VCHI_SERVICE_HANDLE_T handle
++ *
++ * Description: Routine to decrement refcount on a service
++ *
++ * Returns: void
++ *
++ ***********************************************************/
++int32_t vchi_service_release( const VCHI_SERVICE_HANDLE_T handle )
++{
++ VCHI_SERVICE_T *service = (VCHI_SERVICE_T *)handle;
++ int ret;
++ RETRY(ret,ioctl(service->fd, VCHIQ_IOC_RELEASE_SERVICE, service->handle));
++ return ret;
++}
++
++/*
++ * Support functions
++ */
++
++static VCHIQ_INSTANCE_T
++vchiq_lib_init(void)
++{
++ static int mutex_initialised = 0;
++ static VCOS_MUTEX_T vchiq_lib_mutex;
++ VCHIQ_INSTANCE_T instance = &vchiq_instance;
++
++ vcos_global_lock();
++ if (!mutex_initialised)
++ {
++ vcos_mutex_create(&vchiq_lib_mutex, "vchiq-init");
++
++ vcos_log_set_level( &vchiq_lib_log_category, vchiq_default_lib_log_level );
++ vcos_log_register( "vchiq_lib", &vchiq_lib_log_category );
++
++ mutex_initialised = 1;
++ }
++ vcos_global_unlock();
++
++ vcos_mutex_lock(&vchiq_lib_mutex);
++
++ if (instance->initialised == 0)
++ {
++ instance->fd = open("/dev/vchiq", O_RDWR);
++ if (instance->fd >= 0)
++ {
++ VCHIQ_GET_CONFIG_T args;
++ VCHIQ_CONFIG_T config;
++ int ret;
++ args.config_size = sizeof(config);
++ args.pconfig = &config;
++ RETRY(ret, ioctl(instance->fd, VCHIQ_IOC_GET_CONFIG, &args));
++ if ((ret == 0) && (config.version >= VCHIQ_VERSION_MIN) && (config.version_min <= VCHIQ_VERSION))
++ {
++ instance->used_services = 0;
++ vcos_mutex_create(&instance->mutex, "VCHIQ instance");
++ instance->initialised = 1;
++ }
++ else
++ {
++ if (ret == 0)
++ {
++ vcos_log_error("Incompatible VCHIQ library - driver version %d (min %d), library version %d (min %d)",
++ config.version, config.version_min, VCHIQ_VERSION, VCHIQ_VERSION_MIN);
++ }
++ else
++ {
++ vcos_log_error("Very incompatible VCHIQ library - cannot retrieve driver version");
++ }
++ close(instance->fd);
++ instance = NULL;
++ }
++ }
++ else
++ {
++ instance = NULL;
++ }
++ }
++ else if (instance->initialised > 0)
++ {
++ instance->initialised++;
++ }
++
++ vcos_mutex_unlock(&vchiq_lib_mutex);
++
++ return instance;
++}
++
++static void *
++completion_thread(void *arg)
++{
++ VCHIQ_INSTANCE_T instance = (VCHIQ_INSTANCE_T)arg;
++ VCHIQ_AWAIT_COMPLETION_T args;
++ VCHIQ_COMPLETION_DATA_T completions[8];
++ void *msgbufs[8];
++
++ static const VCHI_CALLBACK_REASON_T vchiq_reason_to_vchi[] =
++ {
++ VCHI_CALLBACK_SERVICE_OPENED, // VCHIQ_SERVICE_OPENED
++ VCHI_CALLBACK_SERVICE_CLOSED, // VCHIQ_SERVICE_CLOSED
++ VCHI_CALLBACK_MSG_AVAILABLE, // VCHIQ_MESSAGE_AVAILABLE
++ VCHI_CALLBACK_BULK_SENT, // VCHIQ_BULK_TRANSMIT_DONE
++ VCHI_CALLBACK_BULK_RECEIVED, // VCHIQ_BULK_RECEIVE_DONE
++ VCHI_CALLBACK_BULK_TRANSMIT_ABORTED, // VCHIQ_BULK_TRANSMIT_ABORTED
++ VCHI_CALLBACK_BULK_RECEIVE_ABORTED, // VCHIQ_BULK_RECEIVE_ABORTED
++ };
++
++ args.count = vcos_countof(completions);
++ args.buf = completions;
++ args.msgbufsize = MSGBUF_SIZE;
++ args.msgbufcount = 0;
++ args.msgbufs = msgbufs;
++
++ while (1)
++ {
++ int ret, i;
++
++ while ((unsigned int)args.msgbufcount < vcos_countof(msgbufs))
++ {
++ void *msgbuf = alloc_msgbuf();
++ if (msgbuf)
++ {
++ msgbufs[args.msgbufcount++] = msgbuf;
++ }
++ else
++ {
++ fprintf(stderr, "vchiq_lib: failed to allocate a message buffer\n");
++ vcos_demand(args.msgbufcount != 0);
++ }
++ }
++
++ RETRY(ret, ioctl(instance->fd, VCHIQ_IOC_AWAIT_COMPLETION, &args));
++
++ if (ret <= 0)
++ break;
++
++ for (i = 0; i < ret; i++)
++ {
++ VCHIQ_COMPLETION_DATA_T *completion = &completions[i];
++ VCHIQ_SERVICE_T *service = (VCHIQ_SERVICE_T *)completion->service_userdata;
++ if (service->base.callback)
++ {
++ vcos_log_trace( "callback(%x, %x, %x, %x)",
++ completion->reason, (uint32_t)completion->header,
++ (uint32_t)&service->base, (uint32_t)completion->bulk_userdata );
++ service->base.callback(completion->reason, completion->header,
++ &service->base, completion->bulk_userdata);
++ }
++ else if (service->vchi_callback)
++ {
++ VCHI_CALLBACK_REASON_T vchi_reason =
++ vchiq_reason_to_vchi[completion->reason];
++ service->vchi_callback(service->base.userdata, vchi_reason, completion->bulk_userdata);
++ }
++ }
++ }
++ return NULL;
++}
++
++static VCHIQ_STATUS_T
++create_service(VCHIQ_INSTANCE_T instance,
++ const VCHIQ_SERVICE_PARAMS_T *params,
++ VCHI_CALLBACK_T vchi_callback,
++ int is_open,
++ VCHIQ_SERVICE_HANDLE_T *pservice)
++{
++ VCHIQ_SERVICE_T *service = NULL;
++ VCHIQ_STATUS_T status = VCHIQ_SUCCESS;
++ int i;
++
++ if (!is_valid_instance(instance))
++ return VCHIQ_ERROR;
++
++ vcos_mutex_lock(&instance->mutex);
++
++ /* Find a free service */
++ if (is_open)
++ {
++ /* Find a free service */
++ for (i = 0; i < instance->used_services; i++)
++ {
++ if (instance->services[i].handle == VCHIQ_INVALID_HANDLE)
++ {
++ service = &instance->services[i];
++ break;
++ }
++ }
++ }
++ else
++ {
++ for (i = (instance->used_services - 1); i >= 0; i--)
++ {
++ VCHIQ_SERVICE_T *srv = &instance->services[i];
++ if (srv->handle == VCHIQ_INVALID_HANDLE)
++ {
++ service = srv;
++ }
++ else if (
++ (srv->base.fourcc == params->fourcc) &&
++ ((srv->base.callback != params->callback) ||
++ (srv->vchi_callback != vchi_callback)))
++ {
++ /* There is another server using this fourcc which doesn't match */
++ service = NULL;
++ status = VCHIQ_ERROR;
++ break;
++ }
++ }
++ }
++
++ if (!service && (status == VCHIQ_SUCCESS) &&
++ (instance->used_services < VCHIQ_MAX_INSTANCE_SERVICES))
++ service = &instance->services[instance->used_services++];
++
++ if (service)
++ {
++ VCHIQ_CREATE_SERVICE_T args;
++ int ret;
++ service->base.fourcc = params->fourcc;
++ service->base.callback = params->callback;
++ service->vchi_callback = vchi_callback;
++ service->base.userdata = params->userdata;
++ service->fd = instance->fd;
++ service->peek_size = -1;
++ service->peek_buf = NULL;
++
++ args.params = *params;
++ args.params.userdata = service;
++ args.is_open = is_open;
++ args.is_vchi = (params->callback == NULL);
++ args.handle = -1; /* OUT parameter */
++ RETRY(ret, ioctl(instance->fd, VCHIQ_IOC_CREATE_SERVICE, &args));
++ if (ret == 0)
++ service->handle = args.handle;
++ else
++ status = VCHIQ_ERROR;
++ }
++
++ *pservice = (status == VCHIQ_SUCCESS) ? &service->base : NULL;
++
++ vcos_mutex_unlock(&instance->mutex);
++
++ return status;
++}
++
++static int
++fill_peek_buf(VCHI_SERVICE_T *service,
++ VCHI_FLAGS_T flags)
++{
++ VCHIQ_DEQUEUE_MESSAGE_T args;
++ int ret = 0;
++
++ vcos_assert(flags == VCHI_FLAGS_NONE || flags == VCHI_FLAGS_BLOCK_UNTIL_OP_COMPLETE);
++
++ if (service->peek_size < 0)
++ {
++ if (!service->peek_buf)
++ service->peek_buf = alloc_msgbuf();
++
++ if (service->peek_buf)
++ {
++ args.handle = service->handle;
++ args.blocking = (flags == VCHI_FLAGS_BLOCK_UNTIL_OP_COMPLETE);
++ args.bufsize = MSGBUF_SIZE;
++ args.buf = service->peek_buf;
++
++ RETRY(ret, ioctl(service->fd, VCHIQ_IOC_DEQUEUE_MESSAGE, &args));
++
++ if (ret >= 0)
++ {
++ service->peek_size = ret;
++ ret = 0;
++ }
++ else
++ {
++ ret = -1;
++ }
++ }
++ else
++ {
++ ret = -1;
++ }
++ }
++
++ return ret;
++}
++
++
++static void *
++alloc_msgbuf(void)
++{
++ void *msgbuf;
++ vcos_mutex_lock(&vchiq_lib_mutex);
++ msgbuf = free_msgbufs;
++ if (msgbuf)
++ free_msgbufs = *(void **)msgbuf;
++ vcos_mutex_unlock(&vchiq_lib_mutex);
++ if (!msgbuf)
++ msgbuf = malloc(MSGBUF_SIZE);
++ return msgbuf;
++}
++
++static void
++free_msgbuf(void *buf)
++{
++ vcos_mutex_lock(&vchiq_lib_mutex);
++ *(void **)buf = free_msgbufs;
++ free_msgbufs = buf;
++ vcos_mutex_unlock(&vchiq_lib_mutex);
++}
+--- /dev/null
++++ b/drivers/misc/vc04_services/interface/vchiq_arm/vchiq_memdrv.h
+@@ -0,0 +1,45 @@
++/*****************************************************************************
++* Copyright 2001 - 2010 Broadcom Corporation. All rights reserved.
++*
++* Unless you and Broadcom execute a separate written software license
++* agreement governing use of this software, this software is licensed to you
++* under the terms of the GNU General Public License version 2, available at
++* http://www.broadcom.com/licenses/GPLv2.php (the "GPL").
++*
++* Notwithstanding the above, under no circumstances may you combine this
++* software in any way with any other Broadcom software provided under a
++* license other than the GPL, without Broadcom's express prior written
++* consent.
++*****************************************************************************/
++
++#ifndef VCHIQ_MEMDRV_H
++#define VCHIQ_MEMDRV_H
++
++/* ---- Include Files ----------------------------------------------------- */
++
++#include <linux/kernel.h>
++#include "vchiq_if.h"
++
++/* ---- Constants and Types ---------------------------------------------- */
++
++typedef struct
++{
++ void *armSharedMemVirt;
++ dma_addr_t armSharedMemPhys;
++ size_t armSharedMemSize;
++
++ void *vcSharedMemVirt;
++ dma_addr_t vcSharedMemPhys;
++ size_t vcSharedMemSize;
++
++} VCHIQ_SHARED_MEM_INFO_T;
++
++/* ---- Variable Externs ------------------------------------------------- */
++
++/* ---- Function Prototypes ---------------------------------------------- */
++
++void vchiq_get_shared_mem_info( VCHIQ_SHARED_MEM_INFO_T *info );
++
++VCHIQ_STATUS_T vchiq_memdrv_initialise(void);
++
++#endif
+--- /dev/null
++++ b/drivers/misc/vc04_services/interface/vchiq_arm/vchiq_pagelist.h
+@@ -0,0 +1,43 @@
++/*
++ * Copyright (c) 2010-2011 Broadcom Corporation. All rights reserved.
++ *
++ * This program is free software; you can redistribute it and/or modify
++ * it under the terms of the GNU General Public License as published by
++ * the Free Software Foundation; either version 2 of the License, or
++ * (at your option) any later version.
++ *
++ * This program is distributed in the hope that it will be useful,
++ * but WITHOUT ANY WARRANTY; without even the implied warranty of
++ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
++ * GNU General Public License for more details.
++ *
++ * You should have received a copy of the GNU General Public License
++ * along with this program; if not, write to the Free Software
++ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
++ */
++
++#ifndef VCHIQ_PAGELIST_H
++#define VCHIQ_PAGELIST_H
++
++#ifndef PAGE_SIZE
++#define PAGE_SIZE 4096
++#endif
++#define CACHE_LINE_SIZE 32
++#define PAGELIST_WRITE 0
++#define PAGELIST_READ 1
++#define PAGELIST_READ_WITH_FRAGMENTS 2
++
++typedef struct pagelist_struct {
++ unsigned long length;
++ unsigned short type;
++ unsigned short offset;
++ unsigned long addrs[1]; /* N.B. 12 LSBs hold the number of following
++ pages at consecutive addresses. */
++} PAGELIST_T;
++
++typedef struct fragments_struct {
++ char headbuf[CACHE_LINE_SIZE];
++ char tailbuf[CACHE_LINE_SIZE];
++} FRAGMENTS_T;
++
++#endif /* VCHIQ_PAGELIST_H */
+--- /dev/null
++++ b/drivers/misc/vc04_services/interface/vchiq_arm/vchiq_shim.c
+@@ -0,0 +1,970 @@
++/*
++ * Copyright (c) 2010-2011 Broadcom Corporation. All rights reserved.
++ *
++ * This program is free software; you can redistribute it and/or modify
++ * it under the terms of the GNU General Public License as published by
++ * the Free Software Foundation; either version 2 of the License, or
++ * (at your option) any later version.
++ *
++ * This program is distributed in the hope that it will be useful,
++ * but WITHOUT ANY WARRANTY; without even the implied warranty of
++ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
++ * GNU General Public License for more details.
++ *
++ * You should have received a copy of the GNU General Public License
++ * along with this program; if not, write to the Free Software
++ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
++ */
++
++#include "interface/vchi/vchi.h"
++#include "vchiq.h"
++#include "vchiq_core.h"
++
++#include "vchiq_util.h"
++
++#include <stddef.h>
++
++#if defined(__KERNEL__)
++#include <linux/module.h>
++#endif
++
++#define vchiq_status_to_vchi(status) ((int32_t)status)
++
++typedef struct {
++ VCHIQ_SERVICE_HANDLE_T handle;
++
++ VCHIU_QUEUE_T queue;
++
++ VCHI_CALLBACK_T callback;
++ void *callback_param;
++} SHIM_SERVICE_T;
++
++/* ----------------------------------------------------------------------
++ * return pointer to the mphi message driver function table
++ * -------------------------------------------------------------------- */
++#ifdef WIN32
++const VCHI_MESSAGE_DRIVER_T *
++mphi_get_func_table( void )
++{
++ return NULL;
++}
++#endif
++
++/* ----------------------------------------------------------------------
++ * return pointer to the mphi message driver function table
++ * -------------------------------------------------------------------- */
++const VCHI_MESSAGE_DRIVER_T *
++vchi_mphi_message_driver_func_table( void )
++{
++ return NULL;
++}
++
++/* ----------------------------------------------------------------------
++ * return a pointer to the 'single' connection driver fops
++ * -------------------------------------------------------------------- */
++const VCHI_CONNECTION_API_T *
++single_get_func_table( void )
++{
++ return NULL;
++}
++
++VCHI_CONNECTION_T * vchi_create_connection( const VCHI_CONNECTION_API_T * function_table,
++ const VCHI_MESSAGE_DRIVER_T * low_level)
++{
++ vcos_unused(function_table);
++ vcos_unused(low_level);
++ return NULL;
++}
++
++/***********************************************************
++ * Name: vchi_msg_peek
++ *
++ * Arguments: const VCHI_SERVICE_HANDLE_T handle,
++ * void **data,
++ * uint32_t *msg_size,
++ * VCHI_FLAGS_T flags
++ *
++ * Description: Routine to return a pointer to the current message (to allow in place processing)
++ * The message can be removed using vchi_msg_remove when you're finished
++ *
++ * Returns: int32_t - success == 0
++ *
++ ***********************************************************/
++int32_t vchi_msg_peek( VCHI_SERVICE_HANDLE_T handle,
++ void **data,
++ uint32_t *msg_size,
++ VCHI_FLAGS_T flags )
++{
++ SHIM_SERVICE_T *service = (SHIM_SERVICE_T *)handle;
++ VCHIQ_HEADER_T *header;
++
++ vcos_assert(flags == VCHI_FLAGS_NONE || flags == VCHI_FLAGS_BLOCK_UNTIL_OP_COMPLETE);
++
++ if (flags == VCHI_FLAGS_NONE)
++ if (vchiu_queue_is_empty(&service->queue))
++ return -1;
++
++ header = vchiu_queue_peek(&service->queue);
++
++ *data = header->data;
++ *msg_size = header->size;
++
++ return 0;
++}
++
++/***********************************************************
++ * Name: vchi_msg_remove
++ *
++ * Arguments: const VCHI_SERVICE_HANDLE_T handle,
++ *
++ * Description: Routine to remove a message (after it has been read with vchi_msg_peek)
++ *
++ * Returns: int32_t - success == 0
++ *
++ ***********************************************************/
++int32_t vchi_msg_remove( VCHI_SERVICE_HANDLE_T handle )
++{
++ SHIM_SERVICE_T *service = (SHIM_SERVICE_T *)handle;
++ VCHIQ_HEADER_T *header;
++
++ header = vchiu_queue_pop(&service->queue);
++
++ vchiq_release_message(service->handle, header);
++
++ return 0;
++}
++
++/***********************************************************
++ * Name: vchi_msg_queue
++ *
++ * Arguments: VCHI_SERVICE_HANDLE_T handle,
++ * const void *data,
++ * uint32_t data_size,
++ * VCHI_FLAGS_T flags,
++ * void *msg_handle,
++ *
++ * Description: Thin wrapper to queue a message onto a connection
++ *
++ * Returns: int32_t - success == 0
++ *
++ ***********************************************************/
++int32_t vchi_msg_queue( VCHI_SERVICE_HANDLE_T handle,
++ const void * data,
++ uint32_t data_size,
++ VCHI_FLAGS_T flags,
++ void * msg_handle )
++{
++ SHIM_SERVICE_T *service = (SHIM_SERVICE_T *)handle;
++ VCHIQ_ELEMENT_T element = {data, data_size};
++ VCHIQ_STATUS_T status;
++
++ vcos_unused(msg_handle);
++
++ vcos_assert(flags == VCHI_FLAGS_BLOCK_UNTIL_QUEUED);
++
++ status = vchiq_queue_message(service->handle, &element, 1);
++
++ // On some platforms, like linux kernel, vchiq_queue_message() may return
++ // VCHIQ_RETRY, so we need to implment a retry mechanism since this
++ // function is supposed to block until queued
++ while ( status == VCHIQ_RETRY )
++ {
++ vcos_sleep( 1 );
++ status = vchiq_queue_message(service->handle, &element, 1);
++ }
++
++ return vchiq_status_to_vchi(status);
++}
++
++/***********************************************************
++ * Name: vchi_bulk_queue_receive
++ *
++ * Arguments: VCHI_BULK_HANDLE_T handle,
++ * void *data_dst,
++ * const uint32_t data_size,
++ * VCHI_FLAGS_T flags
++ * void *bulk_handle
++ *
++ * Description: Routine to setup a rcv buffer
++ *
++ * Returns: int32_t - success == 0
++ *
++ ***********************************************************/
++int32_t vchi_bulk_queue_receive( VCHI_SERVICE_HANDLE_T handle,
++ void * data_dst,
++ uint32_t data_size,
++ VCHI_FLAGS_T flags,
++ void * bulk_handle )
++{
++ SHIM_SERVICE_T *service = (SHIM_SERVICE_T *)handle;
++ VCHIQ_BULK_MODE_T mode;
++ VCHIQ_STATUS_T status;
++
++ switch ((int)flags) {
++ case VCHI_FLAGS_CALLBACK_WHEN_OP_COMPLETE | VCHI_FLAGS_BLOCK_UNTIL_QUEUED:
++ vcos_assert(service->callback);
++ mode = VCHIQ_BULK_MODE_CALLBACK;
++ break;
++ case VCHI_FLAGS_BLOCK_UNTIL_OP_COMPLETE:
++ mode = VCHIQ_BULK_MODE_BLOCKING;
++ break;
++ case VCHI_FLAGS_BLOCK_UNTIL_QUEUED:
++ case VCHI_FLAGS_NONE:
++ mode = VCHIQ_BULK_MODE_NOCALLBACK;
++ break;
++ default:
++ vcos_assert(0);
++ return vchiq_status_to_vchi(VCHIQ_ERROR);
++ }
++
++ status = vchiq_bulk_receive(service->handle, data_dst, data_size,
++ bulk_handle, mode);
++
++ // On some platforms, like linux kernel, vchiq_bulk_receive() may return
++ // VCHIQ_RETRY, so we need to implment a retry mechanism since this
++ // function is supposed to block until queued
++ while ( status == VCHIQ_RETRY )
++ {
++ vcos_sleep( 1 );
++ status = vchiq_bulk_receive(service->handle, data_dst, data_size,
++ bulk_handle, mode);
++ }
++
++ return vchiq_status_to_vchi(status);
++}
++
++/***********************************************************
++ * Name: vchi_bulk_queue_receive_reloc
++ *
++ * Arguments: VCHI_BULK_HANDLE_T handle,
++ * VCHI_MEM_HANDLE_T h
++ * uint32_t offset
++ * const uint32_t data_size,
++ * VCHI_FLAGS_T flags
++ * void *bulk_handle
++ *
++ * Description: Routine to setup a relocatable rcv buffer
++ *
++ * Returns: int32_t - success == 0
++ *
++ ***********************************************************/
++int32_t vchi_bulk_queue_receive_reloc( const VCHI_SERVICE_HANDLE_T handle,
++ VCHI_MEM_HANDLE_T h,
++ uint32_t offset,
++ uint32_t data_size,
++ const VCHI_FLAGS_T flags,
++ void * const bulk_handle )
++{
++ SHIM_SERVICE_T *service = (SHIM_SERVICE_T *)handle;
++ VCHIQ_BULK_MODE_T mode;
++ VCHIQ_STATUS_T status;
++
++ switch ((int)flags) {
++ case VCHI_FLAGS_CALLBACK_WHEN_OP_COMPLETE | VCHI_FLAGS_BLOCK_UNTIL_QUEUED:
++ vcos_assert(service->callback);
++ mode = VCHIQ_BULK_MODE_CALLBACK;
++ break;
++ case VCHI_FLAGS_BLOCK_UNTIL_OP_COMPLETE:
++ mode = VCHIQ_BULK_MODE_BLOCKING;
++ break;
++ case VCHI_FLAGS_BLOCK_UNTIL_QUEUED:
++ case VCHI_FLAGS_NONE:
++ mode = VCHIQ_BULK_MODE_NOCALLBACK;
++ break;
++ default:
++ vcos_assert(0);
++ return vchiq_status_to_vchi(VCHIQ_ERROR);
++ }
++
++ status = vchiq_bulk_receive_handle(service->handle, h, (void*)offset,
++ data_size, bulk_handle, mode);
++
++ // On some platforms, like linux kernel, vchiq_bulk_receive_handle() may
++ // return VCHIQ_RETRY, so we need to implment a retry mechanism since
++ // this function is supposed to block until queued
++ while ( status == VCHIQ_RETRY )
++ {
++ vcos_sleep( 1 );
++ status = vchiq_bulk_receive_handle(service->handle, h, (void*)offset,
++ data_size, bulk_handle, mode);
++ }
++
++ return vchiq_status_to_vchi(status);
++}
++
++/***********************************************************
++ * Name: vchi_bulk_queue_transmit
++ *
++ * Arguments: VCHI_BULK_HANDLE_T handle,
++ * const void *data_src,
++ * uint32_t data_size,
++ * VCHI_FLAGS_T flags,
++ * void *bulk_handle
++ *
++ * Description: Routine to transmit some data
++ *
++ * Returns: int32_t - success == 0
++ *
++ ***********************************************************/
++int32_t vchi_bulk_queue_transmit( VCHI_SERVICE_HANDLE_T handle,
++ const void * data_src,
++ uint32_t data_size,
++ VCHI_FLAGS_T flags,
++ void * bulk_handle )
++{
++ SHIM_SERVICE_T *service = (SHIM_SERVICE_T *)handle;
++ VCHIQ_BULK_MODE_T mode;
++ VCHIQ_STATUS_T status;
++
++ switch ((int)flags) {
++ case VCHI_FLAGS_CALLBACK_WHEN_OP_COMPLETE | VCHI_FLAGS_BLOCK_UNTIL_QUEUED:
++ vcos_assert(service->callback);
++ mode = VCHIQ_BULK_MODE_CALLBACK;
++ break;
++ case VCHI_FLAGS_BLOCK_UNTIL_DATA_READ:
++ case VCHI_FLAGS_BLOCK_UNTIL_OP_COMPLETE:
++ mode = VCHIQ_BULK_MODE_BLOCKING;
++ break;
++ case VCHI_FLAGS_BLOCK_UNTIL_QUEUED:
++ case VCHI_FLAGS_NONE:
++ mode = VCHIQ_BULK_MODE_NOCALLBACK;
++ break;
++ default:
++ vcos_assert(0);
++ return vchiq_status_to_vchi(VCHIQ_ERROR);
++ }
++
++ status = vchiq_bulk_transmit(service->handle, data_src, data_size,
++ bulk_handle, mode);
++
++ // On some platforms, like linux kernel, vchiq_bulk_transmit() may return
++ // VCHIQ_RETRY, so we need to implment a retry mechanism since this
++ // function is supposed to block until queued
++ while ( status == VCHIQ_RETRY )
++ {
++ vcos_sleep( 1 );
++ status = vchiq_bulk_transmit(service->handle, data_src, data_size,
++ bulk_handle, mode);
++ }
++
++ return vchiq_status_to_vchi(status);
++}
++
++/***********************************************************
++ * Name: vchi_bulk_queue_transmit_reloc
++ *
++ * Arguments: VCHI_BULK_HANDLE_T handle,
++ * VCHI_MEM_HANDLE_T h_src,
++ * uint32_t offset,
++ * uint32_t data_size,
++ * VCHI_FLAGS_T flags,
++ * void *bulk_handle
++ *
++ * Description: Routine to transmit some data from a relocatable buffer
++ *
++ * Returns: int32_t - success == 0
++ *
++ ***********************************************************/
++
++int32_t vchi_bulk_queue_transmit_reloc( VCHI_SERVICE_HANDLE_T handle,
++ VCHI_MEM_HANDLE_T h_src,
++ uint32_t offset,
++ uint32_t data_size,
++ VCHI_FLAGS_T flags,
++ void * const bulk_handle )
++{
++ SHIM_SERVICE_T *service = (SHIM_SERVICE_T *)handle;
++ VCHIQ_BULK_MODE_T mode;
++ VCHIQ_STATUS_T status;
++
++ switch ((int)flags) {
++ case VCHI_FLAGS_CALLBACK_WHEN_OP_COMPLETE | VCHI_FLAGS_BLOCK_UNTIL_QUEUED:
++ vcos_assert(service->callback);
++ mode = VCHIQ_BULK_MODE_CALLBACK;
++ break;
++ case VCHI_FLAGS_BLOCK_UNTIL_DATA_READ:
++ case VCHI_FLAGS_BLOCK_UNTIL_OP_COMPLETE:
++ mode = VCHIQ_BULK_MODE_BLOCKING;
++ break;
++ case VCHI_FLAGS_BLOCK_UNTIL_QUEUED:
++ case VCHI_FLAGS_NONE:
++ mode = VCHIQ_BULK_MODE_NOCALLBACK;
++ break;
++ default:
++ vcos_assert(0);
++ return vchiq_status_to_vchi(VCHIQ_ERROR);
++ }
++
++ status = vchiq_bulk_transmit_handle(service->handle, h_src, (void*)offset,
++ data_size, bulk_handle, mode);
++
++ // On some platforms, like linux kernel, vchiq_bulk_transmit_handle() may
++ // return VCHIQ_RETRY, so we need to implment a retry mechanism since this
++ // function is supposed to block until queued
++ while ( status == VCHIQ_RETRY )
++ {
++ vcos_sleep( 1 );
++ status = vchiq_bulk_transmit_handle(service->handle, h_src, (void*)offset,
++ data_size, bulk_handle, mode);
++ }
++
++ return vchiq_status_to_vchi(status);
++}
++
++/***********************************************************
++ * Name: vchi_msg_dequeue
++ *
++ * Arguments: VCHI_SERVICE_HANDLE_T handle,
++ * void *data,
++ * uint32_t max_data_size_to_read,
++ * uint32_t *actual_msg_size
++ * VCHI_FLAGS_T flags
++ *
++ * Description: Routine to dequeue a message into the supplied buffer
++ *
++ * Returns: int32_t - success == 0
++ *
++ ***********************************************************/
++int32_t vchi_msg_dequeue( VCHI_SERVICE_HANDLE_T handle,
++ void *data,
++ uint32_t max_data_size_to_read,
++ uint32_t *actual_msg_size,
++ VCHI_FLAGS_T flags )
++{
++ SHIM_SERVICE_T *service = (SHIM_SERVICE_T *)handle;
++ VCHIQ_HEADER_T *header;
++
++ vcos_assert(flags == VCHI_FLAGS_NONE || flags == VCHI_FLAGS_BLOCK_UNTIL_OP_COMPLETE);
++
++ if (flags == VCHI_FLAGS_NONE)
++ if (vchiu_queue_is_empty(&service->queue))
++ return -1;
++
++ header = vchiu_queue_pop(&service->queue);
++
++ memcpy(data, header->data, header->size < max_data_size_to_read ? header->size : max_data_size_to_read);
++
++ *actual_msg_size = header->size;
++
++ vchiq_release_message(service->handle, header);
++
++ return 0;
++}
++
++/***********************************************************
++ * Name: vchi_msg_queuev
++ *
++ * Arguments: VCHI_SERVICE_HANDLE_T handle,
++ * const void *data,
++ * uint32_t data_size,
++ * VCHI_FLAGS_T flags,
++ * void *msg_handle
++ *
++ * Description: Thin wrapper to queue a message onto a connection
++ *
++ * Returns: int32_t - success == 0
++ *
++ ***********************************************************/
++
++vcos_static_assert(sizeof(VCHI_MSG_VECTOR_T) == sizeof(VCHIQ_ELEMENT_T));
++vcos_static_assert(offsetof(VCHI_MSG_VECTOR_T, vec_base) == offsetof(VCHIQ_ELEMENT_T, data));
++vcos_static_assert(offsetof(VCHI_MSG_VECTOR_T, vec_len) == offsetof(VCHIQ_ELEMENT_T, size));
++
++int32_t vchi_msg_queuev( VCHI_SERVICE_HANDLE_T handle,
++ VCHI_MSG_VECTOR_T * vector,
++ uint32_t count,
++ VCHI_FLAGS_T flags,
++ void *msg_handle )
++{
++ SHIM_SERVICE_T *service = (SHIM_SERVICE_T *)handle;
++
++ vcos_unused(msg_handle);
++
++ vcos_assert(flags == VCHI_FLAGS_BLOCK_UNTIL_QUEUED);
++
++ return vchiq_status_to_vchi(vchiq_queue_message(service->handle, (const VCHIQ_ELEMENT_T *)vector, count));
++}
++
++#ifdef USE_MEMMGR
++
++/***********************************************************
++ * Name: vchi_msg_queuev_ex
++ *
++ * Arguments: VCHI_SERVICE_HANDLE_T handle,
++ * VCHI_MSG_VECTOR_EX_T *vector
++ * uint32_t count
++ * VCHI_FLAGS_T flags,
++ * void *msg_handle
++ *
++ * Description: Thin wrapper to queue an array of messages onto a connection
++ * Supports resolving MEM_HANDLE's at last possible moment to avoid deadlocks.
++ *
++ * Currently just a shim, so deadlocks are still possible!
++ *
++ * Returns: int32_t - success == 0
++ *
++ ***********************************************************/
++int32_t vchi_msg_queuev_ex( const VCHI_SERVICE_HANDLE_T handle,
++ VCHI_MSG_VECTOR_EX_T * const vector,
++ const uint32_t count,
++ const VCHI_FLAGS_T flags,
++ void * const msg_handle )
++{
++ int32_t success = -1;
++ // For now, we don't actually support sending anything other than
++ // a pointer, so handles have to be patched up; this is likely
++ // to cause deadlocks. This code is not designed to be either
++ // pretty, efficient, or deadlock-free.
++
++ #define max_vecs 16
++ VCHI_MSG_VECTOR_T copy[max_vecs];
++ const uint8_t *orig[max_vecs];
++
++ int i;
++ vcos_unused(msg_handle);
++
++ if (count > sizeof(copy)/sizeof(copy[0]))
++ {
++ vcos_assert(0);
++ return -1;
++ }
++
++ for (i=0; i<count; i++)
++ {
++ VCHI_MSG_VECTOR_EX_T *v = vector+i;
++
++ switch (vector[i].type)
++ {
++ case VCHI_VEC_POINTER:
++ copy[i].vec_base = v->u.ptr.vec_base;
++ copy[i].vec_len = v->u.ptr.vec_len;
++ break;
++ case VCHI_VEC_HANDLE:
++ vcos_assert(v->u.handle.offset+v->u.handle.vec_len <= mem_get_size(v->u.handle.handle));
++ copy[i].vec_base = (uint8_t*)mem_lock(v->u.handle.handle) + v->u.handle.offset;
++ orig[i] = copy[i].vec_base;
++ copy[i].vec_len = v->u.handle.vec_len;
++ break;
++ case VCHI_VEC_LIST:
++ vcos_assert(0); // FIXME: implement this
++ break;
++ default:
++ vcos_assert(0);
++ }
++ }
++ success = vchi_msg_queuev( handle,
++ copy,
++ count,
++ flags &~ VCHI_FLAGS_INTERNAL,
++ msg_handle );
++ if (vcos_verify(success == 0))
++ {
++ // now we need to patch up the vectors if any have been only partially consumed, and
++ // unlock memory handles.
++
++ for (i=0; i<count; i++)
++ {
++ VCHI_MSG_VECTOR_EX_T *v = vector+i;
++
++ switch (vector[i].type)
++ {
++ case VCHI_VEC_POINTER:
++ if (flags & VCHI_FLAGS_ALLOW_PARTIAL)
++ {
++ v->u.ptr.vec_base = copy[i].vec_base;
++ v->u.ptr.vec_len = copy[i].vec_len;
++ }
++ break;
++ case VCHI_VEC_HANDLE:
++ mem_unlock(v->u.handle.handle);
++ if (flags & VCHI_FLAGS_ALLOW_PARTIAL)
++ {
++ const uint8_t *old = orig[i];
++ uint32_t change = (const uint8_t*)copy[i].vec_base-old;
++ v->u.handle.offset += change;
++ v->u.handle.vec_len -= change;
++ }
++ break;
++ default:
++ vcos_assert(0);
++ }
++ }
++ }
++
++ return vchiq_status_to_vchi(success);
++}
++
++#endif
++
++/***********************************************************
++ * Name: vchi_held_msg_release
++ *
++ * Arguments: VCHI_HELD_MSG_T *message
++ *
++ * Description: Routine to release a held message (after it has been read with vchi_msg_hold)
++ *
++ * Returns: int32_t - success == 0
++ *
++ ***********************************************************/
++int32_t vchi_held_msg_release( VCHI_HELD_MSG_T *message )
++{
++ vchiq_release_message((VCHIQ_SERVICE_HANDLE_T)message->service, (VCHIQ_HEADER_T *)message->message);
++
++ return 0;
++}
++
++/***********************************************************
++ * Name: vchi_msg_hold
++ *
++ * Arguments: VCHI_SERVICE_HANDLE_T handle,
++ * void **data,
++ * uint32_t *msg_size,
++ * VCHI_FLAGS_T flags,
++ * VCHI_HELD_MSG_T *message_handle
++ *
++ * Description: Routine to return a pointer to the current message (to allow in place processing)
++ * The message is dequeued - don't forget to release the message using
++ * vchi_held_msg_release when you're finished
++ *
++ * Returns: int32_t - success == 0
++ *
++ ***********************************************************/
++int32_t vchi_msg_hold( VCHI_SERVICE_HANDLE_T handle,
++ void **data,
++ uint32_t *msg_size,
++ VCHI_FLAGS_T flags,
++ VCHI_HELD_MSG_T *message_handle )
++{
++ SHIM_SERVICE_T *service = (SHIM_SERVICE_T *)handle;
++ VCHIQ_HEADER_T *header;
++
++ vcos_assert(flags == VCHI_FLAGS_NONE || flags == VCHI_FLAGS_BLOCK_UNTIL_OP_COMPLETE);
++
++ if (flags == VCHI_FLAGS_NONE)
++ if (vchiu_queue_is_empty(&service->queue))
++ return -1;
++
++ header = vchiu_queue_pop(&service->queue);
++
++ *data = header->data;
++ *msg_size = header->size;
++
++ message_handle->service = (struct opaque_vchi_service_t *)service->handle;
++ message_handle->message = header;
++
++ return 0;
++}
++
++/***********************************************************
++ * Name: vchi_initialise
++ *
++ * Arguments: VCHI_INSTANCE_T *instance_handle
++ * VCHI_CONNECTION_T **connections
++ * const uint32_t num_connections
++ *
++ * Description: Initialises the hardware but does not transmit anything
++ * When run as a Host App this will be called twice hence the need
++ * to malloc the state information
++ *
++ * Returns: 0 if successful, failure otherwise
++ *
++ ***********************************************************/
++
++int32_t vchi_initialise( VCHI_INSTANCE_T *instance_handle )
++{
++ VCHIQ_INSTANCE_T instance;
++ VCHIQ_STATUS_T status;
++
++ status = vchiq_initialise(&instance);
++
++ *instance_handle = (VCHI_INSTANCE_T)instance;
++
++ return vchiq_status_to_vchi(status);
++}
++
++/***********************************************************
++ * Name: vchi_connect
++ *
++ * Arguments: VCHI_CONNECTION_T **connections
++ * const uint32_t num_connections
++ * VCHI_INSTANCE_T instance_handle )
++ *
++ * Description: Starts the command service on each connection,
++ * causing INIT messages to be pinged back and forth
++ *
++ * Returns: 0 if successful, failure otherwise
++ *
++ ***********************************************************/
++int32_t vchi_connect( VCHI_CONNECTION_T **connections,
++ const uint32_t num_connections,
++ VCHI_INSTANCE_T instance_handle )
++{
++ VCHIQ_INSTANCE_T instance = (VCHIQ_INSTANCE_T)instance_handle;
++
++ vcos_unused(connections);
++ vcos_unused(num_connections);
++
++ return vchiq_connect(instance);
++}
++
++
++/***********************************************************
++ * Name: vchi_disconnect
++ *
++ * Arguments: VCHI_INSTANCE_T instance_handle
++ *
++ * Description: Stops the command service on each connection,
++ * causing DE-INIT messages to be pinged back and forth
++ *
++ * Returns: 0 if successful, failure otherwise
++ *
++ ***********************************************************/
++int32_t vchi_disconnect( VCHI_INSTANCE_T instance_handle )
++{
++ VCHIQ_INSTANCE_T instance = (VCHIQ_INSTANCE_T)instance_handle;
++ return vchiq_status_to_vchi(vchiq_shutdown(instance));
++}
++
++
++/***********************************************************
++ * Name: vchi_service_open
++ * Name: vchi_service_create
++ *
++ * Arguments: VCHI_INSTANCE_T *instance_handle
++ * SERVICE_CREATION_T *setup,
++ * VCHI_SERVICE_HANDLE_T *handle
++ *
++ * Description: Routine to open a service
++ *
++ * Returns: int32_t - success == 0
++ *
++ ***********************************************************/
++
++static VCHIQ_STATUS_T shim_callback(VCHIQ_REASON_T reason, VCHIQ_HEADER_T *header, VCHIQ_SERVICE_HANDLE_T handle, void *bulk_user)
++{
++ SHIM_SERVICE_T *service = (SHIM_SERVICE_T *)VCHIQ_GET_SERVICE_USERDATA(handle);
++
++ switch (reason) {
++ case VCHIQ_MESSAGE_AVAILABLE:
++ vchiu_queue_push(&service->queue, header);
++
++ if (service->callback)
++ service->callback(service->callback_param, VCHI_CALLBACK_MSG_AVAILABLE, NULL);
++ break;
++ case VCHIQ_BULK_TRANSMIT_DONE:
++ if (service->callback)
++ service->callback(service->callback_param, VCHI_CALLBACK_BULK_SENT, bulk_user);
++ break;
++ case VCHIQ_BULK_RECEIVE_DONE:
++ if (service->callback)
++ service->callback(service->callback_param, VCHI_CALLBACK_BULK_RECEIVED, bulk_user);
++ break;
++ case VCHIQ_SERVICE_CLOSED:
++ if (service->callback)
++ service->callback(service->callback_param, VCHI_CALLBACK_SERVICE_CLOSED, NULL);
++ break;
++ case VCHIQ_SERVICE_OPENED:
++ /* No equivalent VCHI reason */
++ break;
++ case VCHIQ_BULK_TRANSMIT_ABORTED:
++ if (service->callback)
++ service->callback(service->callback_param, VCHI_CALLBACK_BULK_TRANSMIT_ABORTED, bulk_user);
++ break;
++ case VCHIQ_BULK_RECEIVE_ABORTED:
++ if (service->callback)
++ service->callback(service->callback_param, VCHI_CALLBACK_BULK_RECEIVE_ABORTED, bulk_user);
++ break;
++ default:
++ vcos_assert(0);
++ break;
++ }
++
++ return VCHIQ_SUCCESS;
++}
++
++static SHIM_SERVICE_T *service_alloc(VCHIQ_INSTANCE_T instance,
++ SERVICE_CREATION_T *setup)
++{
++ SHIM_SERVICE_T *service = vcos_calloc(1, sizeof(SHIM_SERVICE_T), "vchiq_shim");
++
++ vcos_unused(instance);
++
++ if (service)
++ {
++ if (vchiu_queue_init(&service->queue, 64))
++ {
++ service->callback = setup->callback;
++ service->callback_param = setup->callback_param;
++ }
++ else
++ {
++ vcos_free(service);
++ service = NULL;
++ }
++ }
++
++ return service;
++}
++
++static void service_free(SHIM_SERVICE_T *service)
++{
++ if (service)
++ {
++ vchiu_queue_delete(&service->queue);
++ vcos_free((void*)service);
++ }
++}
++
++int32_t vchi_service_open( VCHI_INSTANCE_T instance_handle,
++ SERVICE_CREATION_T *setup,
++ VCHI_SERVICE_HANDLE_T *handle)
++{
++ VCHIQ_INSTANCE_T instance = (VCHIQ_INSTANCE_T)instance_handle;
++ SHIM_SERVICE_T *service = service_alloc(instance, setup);
++ if (service)
++ {
++ VCHIQ_STATUS_T status = vchiq_open_service(instance, setup->service_id, shim_callback, service, &service->handle);
++ if (status != VCHIQ_SUCCESS)
++ {
++ service_free(service);
++ service = NULL;
++ }
++ }
++
++ *handle = (VCHI_SERVICE_HANDLE_T)service;
++
++ return (service != NULL) ? 0 : -1;
++}
++
++int32_t vchi_service_create( VCHI_INSTANCE_T instance_handle,
++ SERVICE_CREATION_T *setup,
++ VCHI_SERVICE_HANDLE_T *handle )
++{
++ VCHIQ_INSTANCE_T instance = (VCHIQ_INSTANCE_T)instance_handle;
++ SHIM_SERVICE_T *service = service_alloc(instance, setup);
++ if (service)
++ {
++ VCHIQ_STATUS_T status = vchiq_add_service(instance, setup->service_id, shim_callback, service, &service->handle);
++ if (status != VCHIQ_SUCCESS)
++ {
++ service_free(service);
++ service = NULL;
++ }
++ }
++
++ *handle = (VCHI_SERVICE_HANDLE_T)service;
++
++ return (service != NULL) ? 0 : -1;
++}
++
++int32_t vchi_service_close( const VCHI_SERVICE_HANDLE_T handle )
++{
++ vcos_unused(handle);
++
++ // YTI??
++ return 0;
++}
++
++/* ----------------------------------------------------------------------
++ * read a uint32_t from buffer.
++ * network format is defined to be little endian
++ * -------------------------------------------------------------------- */
++uint32_t
++vchi_readbuf_uint32( const void *_ptr )
++{
++ const unsigned char *ptr = _ptr;
++ return ptr[0] | (ptr[1] << 8) | (ptr[2] << 16) | (ptr[3] << 24);
++}
++
++/* ----------------------------------------------------------------------
++ * write a uint32_t to buffer.
++ * network format is defined to be little endian
++ * -------------------------------------------------------------------- */
++void
++vchi_writebuf_uint32( void *_ptr, uint32_t value )
++{
++ unsigned char *ptr = _ptr;
++ ptr[0] = (unsigned char)((value >> 0) & 0xFF);
++ ptr[1] = (unsigned char)((value >> 8) & 0xFF);
++ ptr[2] = (unsigned char)((value >> 16) & 0xFF);
++ ptr[3] = (unsigned char)((value >> 24) & 0xFF);
++}
++
++/* ----------------------------------------------------------------------
++ * read a uint16_t from buffer.
++ * network format is defined to be little endian
++ * -------------------------------------------------------------------- */
++uint16_t
++vchi_readbuf_uint16( const void *_ptr )
++{
++ const unsigned char *ptr = _ptr;
++ return ptr[0] | (ptr[1] << 8);
++}
++
++/* ----------------------------------------------------------------------
++ * write a uint16_t into the buffer.
++ * network format is defined to be little endian
++ * -------------------------------------------------------------------- */
++void
++vchi_writebuf_uint16( void *_ptr, uint16_t value )
++{
++ unsigned char *ptr = _ptr;
++ ptr[0] = (value >> 0) & 0xFF;
++ ptr[1] = (value >> 8) & 0xFF;
++}
++
++/***********************************************************
++ * Name: vchi_service_use
++ *
++ * Arguments: const VCHI_SERVICE_HANDLE_T handle
++ *
++ * Description: Routine to increment refcount on a service
++ *
++ * Returns: void
++ *
++ ***********************************************************/
++int32_t vchi_service_use( const VCHI_SERVICE_HANDLE_T handle )
++{
++ int32_t ret = -1;
++ SHIM_SERVICE_T *service = (SHIM_SERVICE_T *)handle;
++ if(service)
++ {
++ ret = vchiq_status_to_vchi(vchiq_use_service(service->handle));
++ }
++ return ret;
++}
++
++/***********************************************************
++ * Name: vchi_service_release
++ *
++ * Arguments: const VCHI_SERVICE_HANDLE_T handle
++ *
++ * Description: Routine to decrement refcount on a service
++ *
++ * Returns: void
++ *
++ ***********************************************************/
++int32_t vchi_service_release( const VCHI_SERVICE_HANDLE_T handle )
++{
++ int32_t ret = -1;
++ SHIM_SERVICE_T *service = (SHIM_SERVICE_T *)handle;
++ if(service)
++ {
++ ret = vchiq_status_to_vchi(vchiq_release_service(service->handle));
++ }
++ return ret;
++}
++
++#if defined(__KERNEL__)
++EXPORT_SYMBOL(vchi_initialise);
++EXPORT_SYMBOL(vchi_connect);
++EXPORT_SYMBOL(vchi_bulk_queue_transmit);
++EXPORT_SYMBOL(vchi_msg_dequeue);
++EXPORT_SYMBOL(vchi_msg_queue);
++EXPORT_SYMBOL(vchi_msg_queuev);
++EXPORT_SYMBOL(vchi_service_close);
++EXPORT_SYMBOL(vchi_service_open);
++EXPORT_SYMBOL(vchi_service_create);
++EXPORT_SYMBOL(vchi_service_use);
++EXPORT_SYMBOL(vchi_service_release);
++#endif
+--- /dev/null
++++ b/drivers/misc/vc04_services/interface/vchiq_arm/vchiq_util.c
+@@ -0,0 +1,97 @@
++/*
++ * Copyright (c) 2010-2011 Broadcom Corporation. All rights reserved.
++ *
++ * This program is free software; you can redistribute it and/or modify
++ * it under the terms of the GNU General Public License as published by
++ * the Free Software Foundation; either version 2 of the License, or
++ * (at your option) any later version.
++ *
++ * This program is distributed in the hope that it will be useful,
++ * but WITHOUT ANY WARRANTY; without even the implied warranty of
++ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
++ * GNU General Public License for more details.
++ *
++ * You should have received a copy of the GNU General Public License
++ * along with this program; if not, write to the Free Software
++ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
++ */
++
++#include "vchiq_util.h"
++
++#if !defined(__KERNEL__)
++#include <stdlib.h>
++#endif
++
++static __inline int is_pow2(int i)
++{
++ return i && !(i & (i - 1));
++}
++
++int vchiu_queue_init(VCHIU_QUEUE_T *queue, int size)
++{
++ vcos_assert(is_pow2(size));
++
++ queue->size = size;
++ queue->read = 0;
++ queue->write = 0;
++
++ vcos_event_create(&queue->pop, "vchiu");
++ vcos_event_create(&queue->push, "vchiu");
++
++ queue->storage = vcos_malloc(size * sizeof(VCHIQ_HEADER_T *), VCOS_FUNCTION);
++ if (queue->storage == NULL)
++ {
++ vchiu_queue_delete(queue);
++ return 0;
++ }
++ return 1;
++}
++
++void vchiu_queue_delete(VCHIU_QUEUE_T *queue)
++{
++ vcos_event_delete(&queue->pop);
++ vcos_event_delete(&queue->push);
++ if (queue->storage != NULL)
++ vcos_free(queue->storage);
++}
++
++int vchiu_queue_is_empty(VCHIU_QUEUE_T *queue)
++{
++ return queue->read == queue->write;
++}
++
++void vchiu_queue_push(VCHIU_QUEUE_T *queue, VCHIQ_HEADER_T *header)
++{
++ while (queue->write == queue->read + queue->size)
++ vcos_event_wait(&queue->pop);
++
++ queue->storage[queue->write & (queue->size - 1)] = header;
++
++ queue->write++;
++
++ vcos_event_signal(&queue->push);
++}
++
++VCHIQ_HEADER_T *vchiu_queue_peek(VCHIU_QUEUE_T *queue)
++{
++ while (queue->write == queue->read)
++ vcos_event_wait(&queue->push);
++
++ return queue->storage[queue->read & (queue->size - 1)];
++}
++
++VCHIQ_HEADER_T *vchiu_queue_pop(VCHIU_QUEUE_T *queue)
++{
++ VCHIQ_HEADER_T *header;
++
++ while (queue->write == queue->read)
++ vcos_event_wait(&queue->push);
++
++ header = queue->storage[queue->read & (queue->size - 1)];
++
++ queue->read++;
++
++ vcos_event_signal(&queue->pop);
++
++ return header;
++}
+--- /dev/null
++++ b/drivers/misc/vc04_services/interface/vchiq_arm/vchiq_util.h
+@@ -0,0 +1,47 @@
++/*
++ * Copyright (c) 2010-2011 Broadcom Corporation. All rights reserved.
++ *
++ * This program is free software; you can redistribute it and/or modify
++ * it under the terms of the GNU General Public License as published by
++ * the Free Software Foundation; either version 2 of the License, or
++ * (at your option) any later version.
++ *
++ * This program is distributed in the hope that it will be useful,
++ * but WITHOUT ANY WARRANTY; without even the implied warranty of
++ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
++ * GNU General Public License for more details.
++ *
++ * You should have received a copy of the GNU General Public License
++ * along with this program; if not, write to the Free Software
++ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
++ */
++
++#ifndef VCHIQ_UTIL_H
++#define VCHIQ_UTIL_H
++
++#include "vchiq_if.h"
++#include "interface/vcos/vcos.h"
++
++typedef struct {
++ int size;
++ int read;
++ int write;
++
++ VCOS_EVENT_T pop;
++ VCOS_EVENT_T push;
++
++ VCHIQ_HEADER_T **storage;
++} VCHIU_QUEUE_T;
++
++extern int vchiu_queue_init(VCHIU_QUEUE_T *queue, int size);
++extern void vchiu_queue_delete(VCHIU_QUEUE_T *queue);
++
++extern int vchiu_queue_is_empty(VCHIU_QUEUE_T *queue);
++
++extern void vchiu_queue_push(VCHIU_QUEUE_T *queue, VCHIQ_HEADER_T *header);
++
++extern VCHIQ_HEADER_T *vchiu_queue_peek(VCHIU_QUEUE_T *queue);
++extern VCHIQ_HEADER_T *vchiu_queue_pop(VCHIU_QUEUE_T *queue);
++
++#endif
++
+--- /dev/null
++++ b/drivers/misc/vc04_services/interface/vcos/generic/vcos_cmd.c
+@@ -0,0 +1,681 @@
++/*****************************************************************************
++* Copyright 2009 - 2011 Broadcom Corporation. All rights reserved.
++*
++* Unless you and Broadcom execute a separate written software license
++* agreement governing use of this software, this software is licensed to you
++* under the terms of the GNU General Public License version 2, available at
++* http://www.broadcom.com/licenses/GPLv2.php (the "GPL").
++*
++* Notwithstanding the above, under no circumstances may you combine this
++* software in any way with any other Broadcom software provided under a
++* license other than the GPL, without Broadcom's express prior written
++* consent.
++*****************************************************************************/
++
++/*****************************************************************************
++*
++* This file provides a generic command line interface which allows
++* vcos internals to be manipulated and/or displayed.
++*
++*****************************************************************************/
++
++/* ---- Include Files ---------------------------------------------------- */
++
++#include "interface/vcos/vcos.h"
++
++#ifdef HAVE_VCOS_VERSION
++#include "interface/vcos/vcos_build_info.h"
++#endif
++
++ #ifdef _VIDEOCORE
++#include vcfw/logging/logging.h
++#endif
++
++/* ---- Public Variables ------------------------------------------------- */
++
++/* ---- Private Constants and Types -------------------------------------- */
++
++#define VCOS_LOG_CATEGORY (&vcos_cmd_log_category)
++VCOS_LOG_CAT_T vcos_cmd_log_category;
++
++/* ---- Private Variables ------------------------------------------------ */
++
++static struct VCOS_CMD_GLOBALS_T
++{
++ VCOS_MUTEX_T lock;
++ VCOS_ONCE_T initialized;
++
++ unsigned num_cmd_entries;
++ unsigned num_cmd_alloc;
++ VCOS_CMD_T *cmd_entry;
++
++ VCOS_LOG_CAT_T *log_category;
++} cmd_globals;
++
++/* ---- Private Function Prototypes -------------------------------------- */
++
++static VCOS_STATUS_T help_cmd( VCOS_CMD_PARAM_T *param );
++
++/* ---- Functions ------------------------------------------------------- */
++
++/*****************************************************************************
++*
++* Walks through the commands looking for a particular command
++*
++*****************************************************************************/
++
++static VCOS_CMD_T *find_cmd( VCOS_CMD_T *cmd_entry, const char *name )
++{
++ VCOS_CMD_T *scan_entry = cmd_entry;
++
++ while ( scan_entry->name != NULL )
++ {
++ if ( vcos_strcmp( scan_entry->name, name ) == 0 )
++ {
++ return scan_entry;
++ }
++ scan_entry++;
++ }
++
++ return NULL;
++}
++
++/*****************************************************************************
++*
++* Saves away
++* each line individually.
++*
++*****************************************************************************/
++
++void vcos_cmd_always_log_output( VCOS_LOG_CAT_T *log_category )
++{
++ cmd_globals.log_category = log_category;
++}
++
++/*****************************************************************************
++*
++* Walks through a buffer containing newline separated lines, and logs
++* each line individually.
++*
++*****************************************************************************/
++
++static void cmd_log_results( VCOS_CMD_PARAM_T *param )
++{
++ char *start;
++ char *end;
++
++ start = end = param->result_buf;
++
++ while ( *start != '\0' )
++ {
++ while (( *end != '\0' ) && ( *end != '\n' ))
++ end++;
++
++ if ( *end == '\n' )
++ {
++ *end++ = '\0';
++ }
++
++ if ( cmd_globals.log_category != NULL )
++ {
++ if ( vcos_is_log_enabled( cmd_globals.log_category, VCOS_LOG_INFO ))
++ {
++ vcos_log_impl( cmd_globals.log_category, VCOS_LOG_INFO, "%s", start );
++ }
++ }
++ else
++ {
++ vcos_log_info( "%s", start );
++ }
++
++ start = end;
++ }
++
++ /* Since we logged the buffer, reset the pointer back to the beginning. */
++
++ param->result_ptr = param->result_buf;
++ param->result_buf[0] = '\0';
++}
++
++/*****************************************************************************
++*
++* Since we may have limited output space, we create a generic routine
++* which tries to use the result space, but will switch over to using
++* logging if the output is too large.
++*
++*****************************************************************************/
++
++void vcos_cmd_vprintf( VCOS_CMD_PARAM_T *param, const char *fmt, va_list args )
++{
++ int bytes_written;
++ int bytes_remaining;
++
++ bytes_remaining = (int)(param->result_size - ( param->result_ptr - param->result_buf ));
++
++ bytes_written = vcos_vsnprintf( param->result_ptr, bytes_remaining, fmt, args );
++
++ if ( cmd_globals.log_category != NULL )
++ {
++ /* We're going to log each line as we encounter it. If the buffer
++ * doesn't end in a newline, then we'll wait for one first.
++ */
++
++ if ( (( bytes_written + 1 ) >= bytes_remaining )
++ || ( param->result_ptr[ bytes_written - 1 ] == '\n' ))
++ {
++ cmd_log_results( param );
++ }
++ else
++ {
++ param->result_ptr += bytes_written;
++ }
++ }
++ else
++ {
++ if (( bytes_written + 1 ) >= bytes_remaining )
++ {
++ /* Output doesn't fit - switch over to logging */
++
++ param->use_log = 1;
++
++ *param->result_ptr = '\0'; /* Zap the partial line that didn't fit above. */
++
++ cmd_log_results( param ); /* resets result_ptr */
++
++ bytes_written = vcos_vsnprintf( param->result_ptr, bytes_remaining, fmt, args );
++ }
++ param->result_ptr += bytes_written;
++ }
++}
++
++/*****************************************************************************
++*
++* Prints the output.
++*
++*****************************************************************************/
++
++void vcos_cmd_printf( VCOS_CMD_PARAM_T *param, const char *fmt, ... )
++{
++ va_list args;
++
++ va_start( args, fmt );
++ vcos_cmd_vprintf( param, fmt, args );
++ va_end( args );
++}
++
++/*****************************************************************************
++*
++* Prints the arguments which were on the command line prior to ours.
++*
++*****************************************************************************/
++
++static void print_argument_prefix( VCOS_CMD_PARAM_T *param )
++{
++ int arg_idx;
++
++ for ( arg_idx = 0; &param->argv_orig[arg_idx] != param->argv; arg_idx++ )
++ {
++ vcos_cmd_printf( param, "%s ", param->argv_orig[arg_idx] );
++ }
++}
++
++/*****************************************************************************
++*
++* Prints an error message, prefixed by the command chain required to get
++* to where we're at.
++*
++*****************************************************************************/
++
++void vcos_cmd_error( VCOS_CMD_PARAM_T *param, const char *fmt, ... )
++{
++ va_list args;
++
++ print_argument_prefix( param );
++
++ va_start( args, fmt );
++ vcos_cmd_vprintf( param, fmt, args );
++ va_end( args );
++ vcos_cmd_printf( param, "\n" );
++}
++
++/****************************************************************************
++*
++* usage - prints command usage for an array of commands.
++*
++***************************************************************************/
++
++static void usage( VCOS_CMD_PARAM_T *param, VCOS_CMD_T *cmd_entry )
++{
++ int cmd_idx;
++ int nameWidth = 0;
++ int argsWidth = 0;
++ VCOS_CMD_T *scan_entry;
++
++ vcos_cmd_printf( param, "Usage: " );
++ print_argument_prefix( param );
++ vcos_cmd_printf( param, "command [args ...]\n" );
++ vcos_cmd_printf( param, "\n" );
++ vcos_cmd_printf( param, "Where command is one of the following:\n" );
++
++ for ( cmd_idx = 0; cmd_entry[cmd_idx].name != NULL; cmd_idx++ )
++ {
++ int aw;
++ int nw;
++
++ scan_entry = &cmd_entry[cmd_idx];
++
++ nw = vcos_strlen( scan_entry->name );
++ aw = vcos_strlen( scan_entry->args );
++
++ if ( nw > nameWidth )
++ {
++ nameWidth = nw;
++ }
++ if ( aw > argsWidth )
++ {
++ argsWidth = aw;
++ }
++ }
++
++ for ( cmd_idx = 0; cmd_entry[cmd_idx].name != NULL; cmd_idx++ )
++ {
++ scan_entry = &cmd_entry[cmd_idx];
++
++ vcos_cmd_printf( param, " %-*s %-*s - %s\n",
++ nameWidth, scan_entry->name,
++ argsWidth, scan_entry->args,
++ scan_entry->descr );
++ }
++}
++
++/****************************************************************************
++*
++* Prints the usage for the current command.
++*
++***************************************************************************/
++
++void vcos_cmd_usage( VCOS_CMD_PARAM_T *param )
++{
++ VCOS_CMD_T *cmd_entry;
++
++ cmd_entry = param->cmd_entry;
++
++ if ( cmd_entry->sub_cmd_entry != NULL )
++ {
++ /* This command is command with sub-commands */
++
++ usage( param, param->cmd_entry->sub_cmd_entry );
++ }
++ else
++ {
++ vcos_cmd_printf( param, "Usage: " );
++ print_argument_prefix( param );
++ vcos_cmd_printf( param, "%s - %s\n",
++ param->cmd_entry->args,
++ param->cmd_entry->descr );
++ }
++}
++
++/*****************************************************************************
++*
++* Command to print out the help
++*
++* This help command is only called from the main menu.
++*
++*****************************************************************************/
++
++static VCOS_STATUS_T help_cmd( VCOS_CMD_PARAM_T *param )
++{
++ VCOS_CMD_T *found_entry;
++
++#if 0
++ {
++ int arg_idx;
++
++ vcos_log_trace( "%s: argc = %d", __func__, param->argc );
++ for ( arg_idx = 0; arg_idx < param->argc; arg_idx++ )
++ {
++ vcos_log_trace( "%s: argv[%d] = '%s'", __func__, arg_idx, param->argv[arg_idx] );
++ }
++ }
++#endif
++
++ /* If there is an argument after the word help, then we want to print
++ * help for that command.
++ */
++
++ if ( param->argc == 1 )
++ {
++ if ( param->cmd_parent_entry == cmd_globals.cmd_entry )
++ {
++ /* Bare help - print the command usage for the root */
++
++ usage( param, cmd_globals.cmd_entry );
++ return VCOS_SUCCESS;
++ }
++
++ /* For all other cases help requires an argument */
++
++ vcos_cmd_error( param, "%s requires an argument", param->argv[0] );
++ return VCOS_EINVAL;
++ }
++
++ /* We were given an argument. */
++
++ if (( found_entry = find_cmd( param->cmd_parent_entry, param->argv[1] )) != NULL )
++ {
++ /* Make it look like the command that was specified is the one that's
++ * currently running
++ */
++
++ param->cmd_entry = found_entry;
++ param->argv[0] = param->argv[1];
++ param->argv++;
++ param->argc--;
++
++ vcos_cmd_usage( param );
++ return VCOS_SUCCESS;
++ }
++
++ vcos_cmd_error( param, "- unrecognized command: '%s'", param->argv[1] );
++ return VCOS_ENOENT;
++}
++
++/*****************************************************************************
++*
++* Command to print out the version/build information.
++*
++*****************************************************************************/
++
++#ifdef HAVE_VCOS_VERSION
++
++static VCOS_STATUS_T version_cmd( VCOS_CMD_PARAM_T *param )
++{
++ static const char* copyright = "Copyright (c) 2011 Broadcom";
++
++ vcos_cmd_printf( param, "%s %s\n%s\nversion %s\n",
++ vcos_get_build_date(),
++ vcos_get_build_time(),
++ copyright,
++ vcos_get_build_version() );
++
++ return VCOS_SUCCESS;
++}
++
++#endif
++
++/*****************************************************************************
++*
++* Internal commands
++*
++*****************************************************************************/
++
++static VCOS_CMD_T cmd_help = { "help", "[command]", help_cmd, NULL, "Prints command help information" };
++
++#ifdef HAVE_VCOS_VERSION
++static VCOS_CMD_T cmd_version = { "version", "", version_cmd, NULL, "Prints build/version information" };
++#endif
++
++/*****************************************************************************
++*
++* Walks the command table and executes the commands
++*
++*****************************************************************************/
++
++static VCOS_STATUS_T execute_cmd( VCOS_CMD_PARAM_T *param, VCOS_CMD_T *cmd_entry )
++{
++ const char *cmdStr;
++ VCOS_CMD_T *found_entry;
++
++#if 0
++ {
++ int arg_idx;
++
++ vcos_cmd_printf( param, "%s: argc = %d", __func__, param->argc );
++ for ( arg_idx = 0; arg_idx < param->argc; arg_idx++ )
++ {
++ vcos_cmd_printf( param, " argv[%d] = '%s'", arg_idx, param->argv[arg_idx] );
++ }
++ vcos_cmd_printf( param, "\n" );
++ }
++#endif
++
++ if ( param->argc <= 1 )
++ {
++ /* No command specified */
++
++ vcos_cmd_error( param, "%s - no command specified", param->argv[0] );
++ return VCOS_EINVAL;
++ }
++
++ /* argv[0] is the command/program that caused us to get invoked, so we strip
++ * it off.
++ */
++
++ param->argc--;
++ param->argv++;
++ param->cmd_parent_entry = cmd_entry;
++
++ /* Not the help command, scan for the command and execute it. */
++
++ cmdStr = param->argv[0];
++
++ if (( found_entry = find_cmd( cmd_entry, cmdStr )) != NULL )
++ {
++ if ( found_entry->sub_cmd_entry != NULL )
++ {
++ return execute_cmd( param, found_entry->sub_cmd_entry );
++ }
++
++ param->cmd_entry = found_entry;
++ return found_entry->cmd_fn( param );
++ }
++
++ /* Unrecognized command - check to see if it was the help command */
++
++ if ( vcos_strcmp( cmdStr, cmd_help.name ) == 0 )
++ {
++ return help_cmd( param );
++ }
++
++ vcos_cmd_error( param, "- unrecognized command: '%s'", cmdStr );
++ return VCOS_ENOENT;
++}
++
++/*****************************************************************************
++*
++* Initializes the command line parser.
++*
++*****************************************************************************/
++
++static void vcos_cmd_init( void )
++{
++ vcos_mutex_create( &cmd_globals.lock, "vcos_cmd" );
++
++ cmd_globals.num_cmd_entries = 0;
++ cmd_globals.num_cmd_alloc = 0;
++ cmd_globals.cmd_entry = NULL;
++}
++
++/*****************************************************************************
++*
++* Command line processor.
++*
++*****************************************************************************/
++
++VCOS_STATUS_T vcos_cmd_execute( int argc, char **argv, size_t result_size, char *result_buf )
++{
++ VCOS_STATUS_T rc = VCOS_EINVAL;
++ VCOS_CMD_PARAM_T param;
++
++ vcos_once( &cmd_globals.initialized, vcos_cmd_init );
++
++ param.argc = argc;
++ param.argv = param.argv_orig = argv;
++
++ param.use_log = 0;
++ param.result_size = result_size;
++ param.result_ptr = result_buf;
++ param.result_buf = result_buf;
++
++ result_buf[0] = '\0';
++
++ vcos_mutex_lock( &cmd_globals.lock );
++
++ rc = execute_cmd( &param, cmd_globals.cmd_entry );
++
++ if ( param.use_log )
++ {
++ cmd_log_results( &param );
++ vcos_snprintf( result_buf, result_size, "results logged" );
++ }
++ else
++ if ( cmd_globals.log_category != NULL )
++ {
++ if ( result_buf[0] != '\0' )
++ {
++ /* There is a partial line still buffered. */
++
++ vcos_cmd_printf( &param, "\n" );
++ }
++ }
++
++ vcos_mutex_unlock( &cmd_globals.lock );
++
++ return rc;
++}
++
++/*****************************************************************************
++*
++* Registers a command entry with the command line processor
++*
++*****************************************************************************/
++
++VCOS_STATUS_T vcos_cmd_register( VCOS_CMD_T *cmd_entry )
++{
++ VCOS_STATUS_T rc;
++ VCOS_UNSIGNED new_num_cmd_alloc;
++ VCOS_CMD_T *new_cmd_entry;
++ VCOS_CMD_T *old_cmd_entry;
++ VCOS_CMD_T *scan_entry;
++
++ vcos_once( &cmd_globals.initialized, vcos_cmd_init );
++
++ vcos_assert( cmd_entry != NULL );
++ vcos_assert( cmd_entry->name != NULL );
++
++ vcos_log_trace( "%s: cmd '%s'", __FUNCTION__, cmd_entry->name );
++
++ vcos_assert( cmd_entry->args != NULL );
++ vcos_assert(( cmd_entry->cmd_fn != NULL ) || ( cmd_entry->sub_cmd_entry != NULL ));
++ vcos_assert( cmd_entry->descr != NULL );
++
++ /* We expect vcos_cmd_init to be called before vcos_logging_init, so we
++ * need to defer registering our logging category until someplace
++ * like right here.
++ */
++
++ if ( vcos_cmd_log_category.name == NULL )
++ {
++ /*
++ * If you're using the command interface, you pretty much always want
++ * log messages from this file to show up. So we change the default
++ * from ERROR to be the more reasonable INFO level.
++ */
++
++ vcos_log_set_level(&vcos_cmd_log_category, VCOS_LOG_INFO);
++ vcos_log_register("vcos_cmd", &vcos_cmd_log_category);
++
++ /* We register a help command so that it shows up in the usage. */
++
++ vcos_cmd_register( &cmd_help );
++#ifdef HAVE_VCOS_VERSION
++ vcos_cmd_register( &cmd_version );
++#endif
++ }
++
++ vcos_mutex_lock( &cmd_globals.lock );
++
++ if ( cmd_globals.num_cmd_entries >= cmd_globals.num_cmd_alloc )
++ {
++ if ( cmd_globals.num_cmd_alloc == 0 )
++ {
++ /* We haven't allocated a table yet */
++ }
++
++ /* The number 8 is rather arbitrary. */
++
++ new_num_cmd_alloc = cmd_globals.num_cmd_alloc + 8;
++
++ /* The + 1 is to ensure that we always have a NULL entry at the end. */
++
++ new_cmd_entry = (VCOS_CMD_T *)vcos_calloc( new_num_cmd_alloc + 1, sizeof( *cmd_entry ), "vcos_cmd_entries" );
++ if ( new_cmd_entry == NULL )
++ {
++ rc = VCOS_ENOMEM;
++ goto out;
++ }
++ memcpy( new_cmd_entry, cmd_globals.cmd_entry, cmd_globals.num_cmd_entries * sizeof( *cmd_entry ));
++ cmd_globals.num_cmd_alloc = new_num_cmd_alloc;
++ old_cmd_entry = cmd_globals.cmd_entry;
++ cmd_globals.cmd_entry = new_cmd_entry;
++ vcos_free( old_cmd_entry );
++ }
++
++ if ( cmd_globals.num_cmd_entries == 0 )
++ {
++ /* This is the first command being registered */
++
++ cmd_globals.cmd_entry[0] = *cmd_entry;
++ }
++ else
++ {
++ /* Keep the list in alphabetical order. We start at the end and work backwards
++ * shuffling entries up one until we find an insertion point.
++ */
++
++ for ( scan_entry = &cmd_globals.cmd_entry[cmd_globals.num_cmd_entries - 1];
++ scan_entry >= cmd_globals.cmd_entry; scan_entry-- )
++ {
++ if ( vcos_strcmp( cmd_entry->name, scan_entry->name ) > 0 )
++ {
++ /* We found an insertion point. */
++
++ break;
++ }
++
++ scan_entry[1] = scan_entry[0];
++ }
++ scan_entry[1] = *cmd_entry;
++ }
++ cmd_globals.num_cmd_entries++;
++
++ rc = VCOS_SUCCESS;
++
++out:
++
++ vcos_mutex_unlock( &cmd_globals.lock );
++ return rc;
++}
++
++/*****************************************************************************
++*
++* Registers multiple commands.
++*
++*****************************************************************************/
++
++VCOS_STATUS_T vcos_cmd_register_multiple( VCOS_CMD_T *cmd_entry )
++{
++ VCOS_STATUS_T status;
++
++ while ( cmd_entry->name != NULL )
++ {
++ if (( status = vcos_cmd_register( cmd_entry )) != VCOS_SUCCESS )
++ {
++ return status;
++ }
++ cmd_entry++;
++ }
++ return VCOS_SUCCESS;
++}
++
+--- /dev/null
++++ b/drivers/misc/vc04_services/interface/vcos/generic/vcos_common.h
+@@ -0,0 +1,76 @@
++/*=============================================================================
++Copyright (c) 2009 Broadcom Europe Limited.
++All rights reserved.
++
++Project : vcfw
++Module : chip driver
++
++FILE DESCRIPTION
++VideoCore OS Abstraction Layer - common postamble code
++=============================================================================*/
++
++/** \file
++ *
++ * Postamble code included by the platform-specific header files
++ */
++
++#define VCOS_THREAD_PRI_DEFAULT VCOS_THREAD_PRI_NORMAL
++
++#if !defined(VCOS_THREAD_PRI_INCREASE)
++#error Which way to thread priorities go?
++#endif
++
++#if VCOS_THREAD_PRI_INCREASE < 0
++/* smaller numbers are higher priority */
++#define VCOS_THREAD_PRI_LESS(x) ((x)<VCOS_THREAD_PRI_MAX?(x)+1:VCOS_THREAD_PRI_MAX)
++#define VCOS_THREAD_PRI_MORE(x) ((x)>VCOS_THREAD_PRI_MIN?(x)-1:VCOS_THREAD_PRI_MIN)
++#else
++/* bigger numbers are lower priority */
++#define VCOS_THREAD_PRI_MORE(x) ((x)<VCOS_THREAD_PRI_MAX?(x)+1:VCOS_THREAD_PRI_MAX)
++#define VCOS_THREAD_PRI_LESS(x) ((x)>VCOS_THREAD_PRI_MIN?(x)-1:VCOS_THREAD_PRI_MIN)
++#endif
++
++/* Convenience for Brits: */
++#define VCOS_APPLICATION_INITIALISE VCOS_APPLICATION_INITIALIZE
++
++/*
++ * Check for constant definitions
++ */
++#ifndef VCOS_TICKS_PER_SECOND
++#error VCOS_TICKS_PER_SECOND not defined
++#endif
++
++#if !defined(VCOS_THREAD_PRI_MIN) || !defined(VCOS_THREAD_PRI_MAX)
++#error Priority range not defined
++#endif
++
++#if !defined(VCOS_THREAD_PRI_HIGHEST) || !defined(VCOS_THREAD_PRI_LOWEST) || !defined(VCOS_THREAD_PRI_NORMAL)
++#error Priority ordering not defined
++#endif
++
++#if !defined(VCOS_CAN_SET_STACK_ADDR)
++#error Can stack addresses be set on this platform? Please set this macro to either 0 or 1.
++#endif
++
++#if (_VCOS_AFFINITY_CPU0|_VCOS_AFFINITY_CPU1) & (~_VCOS_AFFINITY_MASK)
++#error _VCOS_AFFINITY_CPUxxx values are not consistent with _VCOS_AFFINITY_MASK
++#endif
++
++/** Append to the end of a singly-linked queue, O(1). Works with
++ * any structure where list has members 'head' and 'tail' and
++ * item has a 'next' pointer.
++ */
++#define VCOS_QUEUE_APPEND_TAIL(list, item) {\
++ (item)->next = NULL;\
++ if (!(list)->head) {\
++ (list)->head = (list)->tail = (item); \
++ } else {\
++ (list)->tail->next = (item); \
++ (list)->tail = (item); \
++ } \
++}
++
++#ifndef VCOS_HAVE_TIMER
++VCOSPRE_ void VCOSPOST_ vcos_timer_init(void);
++#endif
++
+--- /dev/null
++++ b/drivers/misc/vc04_services/interface/vcos/generic/vcos_generic_blockpool.h
+@@ -0,0 +1,260 @@
++/*=============================================================================
++Copyright (c) 2011 Broadcom Europe Limited.
++All rights reserved.
++
++Project : vcfw
++Module : chip driver
++
++FILE DESCRIPTION
++VideoCore OS Abstraction Layer - event flags implemented via a semaphore
++=============================================================================*/
++
++#ifndef VCOS_GENERIC_BLOCKPOOL_H
++#define VCOS_GENERIC_BLOCKPOOL_H
++
++/**
++ * \file
++ *
++ * This provides a generic, thread safe implementation of a VCOS block pool
++ * fixed size memory allocator.
++ */
++
++#ifdef __cplusplus
++extern "C" {
++#endif
++
++#include "interface/vcos/vcos_types.h"
++
++/** Bits 0 to (VCOS_BLOCKPOOL_SUBPOOL_BITS - 1) are used to store the
++ * subpool id. */
++#define VCOS_BLOCKPOOL_SUBPOOL_BITS 3
++#define VCOS_BLOCKPOOL_MAX_SUBPOOLS (1 << VCOS_BLOCKPOOL_SUBPOOL_BITS)
++
++/* Make zero an invalid handle at the cost of decreasing the maximum
++ * number of blocks (2^28) by 1. Alternatively, a spare bit could be
++ * used to indicated valid blocks but there are likely to be better
++ * uses for spare bits. e.g. allowing more subpools
++ */
++#define INDEX_OFFSET 1
++
++#define VCOS_BLOCKPOOL_HANDLE_GET_INDEX(h) \
++ (((h) >> VCOS_BLOCKPOOL_SUBPOOL_BITS) - INDEX_OFFSET)
++
++#define VCOS_BLOCKPOOL_HANDLE_GET_SUBPOOL(h) \
++ ((h) & ((1 << VCOS_BLOCKPOOL_SUBPOOL_BITS) - 1))
++
++#define VCOS_BLOCKPOOL_HANDLE_CREATE(i,s) \
++ ((((i) + INDEX_OFFSET) << VCOS_BLOCKPOOL_SUBPOOL_BITS) | (s))
++
++#define VCOS_BLOCKPOOL_INVALID_HANDLE 0
++
++typedef struct VCOS_BLOCKPOOL_HEADER_TAG
++{
++ /* Blocks either refer to to the pool if they are allocated
++ * or the free list if they are available.
++ */
++ union {
++ struct VCOS_BLOCKPOOL_HEADER_TAG *next;
++ struct VCOS_BLOCKPOOL_SUBPOOL_TAG* subpool;
++ } owner;
++} VCOS_BLOCKPOOL_HEADER_T;
++
++typedef struct VCOS_BLOCKPOOL_SUBPOOL_TAG
++{
++ /** VCOS_BLOCKPOOL_SUBPOOL_MAGIC */
++ uint32_t magic;
++ VCOS_BLOCKPOOL_HEADER_T* free_list;
++ /* The start of the pool memory */
++ void *mem;
++ /* Address of the first block header */
++ void *start;
++ /** The number of blocks in this sub-pool */
++ VCOS_UNSIGNED num_blocks;
++ /** Current number of available blocks in this sub-pool */
++ VCOS_UNSIGNED available_blocks;
++ /** Pointers to the pool that owns this sub-pool */
++ struct VCOS_BLOCKPOOL_TAG* owner;
++ /** Define properties such as memory ownership */
++ uint32_t flags;
++} VCOS_BLOCKPOOL_SUBPOOL_T;
++
++typedef struct VCOS_BLOCKPOOL_TAG
++{
++ /** VCOS_BLOCKPOOL_MAGIC */
++ uint32_t magic;
++ /** Thread safety for Alloc, Free, Delete, Stats */
++ VCOS_MUTEX_T mutex;
++ /** The size of the block data */
++ size_t block_data_size;
++ /** Block size inc overheads */
++ size_t block_size;
++ /** Name for debugging */
++ const char *name;
++ /* The number of subpools that may be used */
++ VCOS_UNSIGNED num_subpools;
++ /** Number of blocks in each dynamically allocated subpool */
++ VCOS_UNSIGNED num_extension_blocks;
++ /** Array of subpools. Subpool zero is is not deleted until the pool is
++ * destroed. If the index of the pool is < num_subpools and
++ * subpool[index.mem] is null then the subpool entry is valid but
++ * "not currently allocated" */
++ VCOS_BLOCKPOOL_SUBPOOL_T subpools[VCOS_BLOCKPOOL_MAX_SUBPOOLS];
++} VCOS_BLOCKPOOL_T;
++
++#define VCOS_BLOCKPOOL_ROUND_UP(x,s) (((x) + ((s) - 1)) & ~((s) - 1))
++/**
++ * Calculates the size in bytes required for a block pool containing
++ * num_blocks of size block_size plus any overheads.
++ *
++ * The block pool header (VCOS_BLOCKPOOL_T) is allocated separately
++ *
++ * Overheads:
++ * block_size + header must be a multiple of sizeof(void*)
++ * The start of the first block may need to be up to wordsize - 1 bytes
++ * into the given buffer because statically allocated buffers within structures
++ * are not guaranteed to be word aligned.
++ */
++#define VCOS_BLOCKPOOL_SIZE(num_blocks, block_size) \
++ ((VCOS_BLOCKPOOL_ROUND_UP((block_size) + sizeof(VCOS_BLOCKPOOL_HEADER_T), \
++ sizeof(void*)) * (num_blocks)) + sizeof(void*))
++
++/**
++ * Sanity check to verify whether a handle is potentially a blockpool handle
++ * when the pool pointer is not available.
++ *
++ * If the pool pointer is availabe use vcos_blockpool_elem_to_handle instead.
++ *
++ * @param handle the handle to verify
++ * @param max_blocks the expected maximum number of block in the pool
++ * that the handle belongs to.
++ */
++#define VCOS_BLOCKPOOL_IS_VALID_HANDLE_FORMAT(handle, max_blocks) \
++ ((handle) != VCOS_BLOCKPOOL_INVALID_HANDLE \
++ && VCOS_BLOCKPOOL_HANDLE_GET_INDEX((handle)) < (max_blocks))
++
++VCOSPRE_
++ VCOS_STATUS_T VCOSPOST_ vcos_generic_blockpool_init(VCOS_BLOCKPOOL_T *pool,
++ VCOS_UNSIGNED num_blocks, VCOS_UNSIGNED block_size,
++ void *start, VCOS_UNSIGNED pool_size, const char *name);
++
++VCOSPRE_
++ VCOS_STATUS_T VCOSPOST_ vcos_generic_blockpool_create_on_heap(
++ VCOS_BLOCKPOOL_T *pool, VCOS_UNSIGNED num_blocks,
++ VCOS_UNSIGNED block_size, const char *name);
++
++VCOSPRE_
++ VCOS_STATUS_T VCOSPOST_ vcos_generic_blockpool_extend(VCOS_BLOCKPOOL_T *pool,
++ VCOS_UNSIGNED num_extensions, VCOS_UNSIGNED num_blocks);
++
++VCOSPRE_ void VCOSPOST_ *vcos_generic_blockpool_alloc(VCOS_BLOCKPOOL_T *pool);
++
++VCOSPRE_ void VCOSPOST_ *vcos_generic_blockpool_calloc(VCOS_BLOCKPOOL_T *pool);
++
++VCOSPRE_ void VCOSPOST_ vcos_generic_blockpool_free(void *block);
++
++VCOSPRE_
++ VCOS_UNSIGNED VCOSPOST_ vcos_generic_blockpool_available_count(
++ VCOS_BLOCKPOOL_T *pool);
++
++VCOSPRE_
++ VCOS_UNSIGNED VCOSPOST_ vcos_generic_blockpool_used_count(
++ VCOS_BLOCKPOOL_T *pool);
++
++VCOSPRE_ void VCOSPOST_ vcos_generic_blockpool_delete(VCOS_BLOCKPOOL_T *pool);
++
++VCOSPRE_ uint32_t VCOSPOST_ vcos_generic_blockpool_elem_to_handle(void *block);
++
++VCOSPRE_ void VCOSPOST_
++ *vcos_generic_blockpool_elem_from_handle(
++ VCOS_BLOCKPOOL_T *pool, uint32_t handle);
++
++VCOSPRE_ uint32_t VCOSPOST_
++ vcos_generic_blockpool_is_valid_elem(
++ VCOS_BLOCKPOOL_T *pool, const void *block);
++#if defined(VCOS_INLINE_BODIES)
++
++VCOS_INLINE_IMPL
++VCOS_STATUS_T vcos_blockpool_init(VCOS_BLOCKPOOL_T *pool,
++ VCOS_UNSIGNED num_blocks, VCOS_UNSIGNED block_size,
++ void *start, VCOS_UNSIGNED pool_size, const char *name)
++{
++ return vcos_generic_blockpool_init(pool, num_blocks, block_size,
++ start, pool_size, name);
++}
++
++VCOS_INLINE_IMPL
++VCOS_STATUS_T vcos_blockpool_create_on_heap(VCOS_BLOCKPOOL_T *pool,
++ VCOS_UNSIGNED num_blocks, VCOS_UNSIGNED block_size, const char *name)
++{
++ return vcos_generic_blockpool_create_on_heap(
++ pool, num_blocks, block_size, name);
++}
++
++VCOS_INLINE_IMPL
++ VCOS_STATUS_T VCOSPOST_ vcos_blockpool_extend(VCOS_BLOCKPOOL_T *pool,
++ VCOS_UNSIGNED num_extensions, VCOS_UNSIGNED num_blocks)
++{
++ return vcos_generic_blockpool_extend(pool, num_extensions, num_blocks);
++}
++
++VCOS_INLINE_IMPL
++void *vcos_blockpool_alloc(VCOS_BLOCKPOOL_T *pool)
++{
++ return vcos_generic_blockpool_alloc(pool);
++}
++
++VCOS_INLINE_IMPL
++void *vcos_blockpool_calloc(VCOS_BLOCKPOOL_T *pool)
++{
++ return vcos_generic_blockpool_calloc(pool);
++}
++
++VCOS_INLINE_IMPL
++void vcos_blockpool_free(void *block)
++{
++ vcos_generic_blockpool_free(block);
++}
++
++VCOS_INLINE_IMPL
++VCOS_UNSIGNED vcos_blockpool_available_count(VCOS_BLOCKPOOL_T *pool)
++{
++ return vcos_generic_blockpool_available_count(pool);
++}
++
++VCOS_INLINE_IMPL
++VCOS_UNSIGNED vcos_blockpool_used_count(VCOS_BLOCKPOOL_T *pool)
++{
++ return vcos_generic_blockpool_used_count(pool);
++}
++
++VCOS_INLINE_IMPL
++void vcos_blockpool_delete(VCOS_BLOCKPOOL_T *pool)
++{
++ vcos_generic_blockpool_delete(pool);
++}
++
++VCOS_INLINE_IMPL
++uint32_t vcos_blockpool_elem_to_handle(void *block)
++{
++ return vcos_generic_blockpool_elem_to_handle(block);
++}
++
++VCOS_INLINE_IMPL
++void *vcos_blockpool_elem_from_handle(VCOS_BLOCKPOOL_T *pool, uint32_t handle)
++{
++ return vcos_generic_blockpool_elem_from_handle(pool, handle);
++}
++
++VCOS_INLINE_IMPL
++uint32_t vcos_blockpool_is_valid_elem(VCOS_BLOCKPOOL_T *pool, const void *block)
++{
++ return vcos_generic_blockpool_is_valid_elem(pool, block);
++}
++#endif /* VCOS_INLINE_BODIES */
++
++
++#ifdef __cplusplus
++}
++#endif
++#endif /* VCOS_GENERIC_BLOCKPOOL_H */
++
+--- /dev/null
++++ b/drivers/misc/vc04_services/interface/vcos/generic/vcos_generic_event_flags.c
+@@ -0,0 +1,297 @@
++/*=============================================================================
++Copyright (c) 2009 Broadcom Europe Limited.
++All rights reserved.
++
++FILE DESCRIPTION
++VideoCore OS Abstraction Layer - event flags implemented via mutexes
++=============================================================================*/
++
++#include "interface/vcos/vcos.h"
++#include "interface/vcos/generic/vcos_generic_event_flags.h"
++
++#include <stddef.h>
++
++/** A structure created by a thread that waits on the event flags
++ * for a particular combination of flags to arrive.
++ */
++typedef struct VCOS_EVENT_WAITER_T
++{
++ VCOS_UNSIGNED requested_events; /**< The events wanted */
++ VCOS_UNSIGNED actual_events; /**< Actual events found */
++ VCOS_UNSIGNED op; /**< The event operation to be used */
++ VCOS_STATUS_T return_status; /**< The return status the waiter should pass back */
++ VCOS_EVENT_FLAGS_T *flags; /**< Pointer to the original 'flags' structure */
++ VCOS_THREAD_T *thread; /**< Thread waiting */
++ struct VCOS_EVENT_WAITER_T *next;
++} VCOS_EVENT_WAITER_T;
++
++#ifndef NDEBUG
++static int waiter_list_valid(VCOS_EVENT_FLAGS_T *flags);
++#endif
++static void event_flags_timer_expired(void *cxt);
++
++VCOS_STATUS_T vcos_generic_event_flags_create(VCOS_EVENT_FLAGS_T *flags, const char *name)
++{
++ VCOS_STATUS_T rc;
++ if ((rc=vcos_mutex_create(&flags->lock, name)) != VCOS_SUCCESS)
++ {
++ return rc;
++ }
++
++ flags->events = 0;
++ flags->waiters.head = flags->waiters.tail = 0;
++ return rc;
++}
++
++void vcos_generic_event_flags_set(VCOS_EVENT_FLAGS_T *flags,
++ VCOS_UNSIGNED bitmask,
++ VCOS_OPTION op)
++{
++ vcos_assert(flags);
++ vcos_mutex_lock(&flags->lock);
++ if (op == VCOS_OR)
++ {
++ flags->events |= bitmask;
++ }
++ else if (op == VCOS_AND)
++ {
++ flags->events &= bitmask;
++ }
++ else
++ {
++ vcos_assert(0);
++ }
++
++ /* Now wake up any threads that have now become signalled. */
++ if (flags->waiters.head != NULL)
++ {
++ VCOS_UNSIGNED consumed_events = 0;
++ VCOS_EVENT_WAITER_T **pcurrent_waiter = &flags->waiters.head;
++ VCOS_EVENT_WAITER_T *prev_waiter = NULL;
++
++ /* Walk the chain of tasks suspend on this event flag group to determine
++ * if any of their requests can be satisfied.
++ */
++ while ((*pcurrent_waiter) != NULL)
++ {
++ VCOS_EVENT_WAITER_T *curr_waiter = *pcurrent_waiter;
++
++ /* Determine if this request has been satisfied */
++
++ /* First, find the event flags in common. */
++ VCOS_UNSIGNED waiter_satisfied = flags->events & curr_waiter->requested_events;
++
++ /* Second, determine if all the event flags must match */
++ if (curr_waiter->op & VCOS_AND)
++ {
++ /* All requested events must be present */
++ waiter_satisfied = (waiter_satisfied == curr_waiter->requested_events);
++ }
++
++ /* Wake this one up? */
++ if (waiter_satisfied)
++ {
++
++ if (curr_waiter->op & VCOS_CONSUME)
++ {
++ consumed_events |= curr_waiter->requested_events;
++ }
++
++ /* remove this block from the list, taking care at the end */
++ *pcurrent_waiter = curr_waiter->next;
++ if (curr_waiter->next == NULL)
++ flags->waiters.tail = prev_waiter;
++
++ vcos_assert(waiter_list_valid(flags));
++
++ curr_waiter->return_status = VCOS_SUCCESS;
++ curr_waiter->actual_events = flags->events;
++
++ _vcos_thread_sem_post(curr_waiter->thread);
++ }
++ else
++ {
++ /* move to next element in the list */
++ prev_waiter = *pcurrent_waiter;
++ pcurrent_waiter = &(curr_waiter->next);
++ }
++ }
++
++ flags->events &= ~consumed_events;
++
++ }
++
++ vcos_mutex_unlock(&flags->lock);
++}
++
++void vcos_generic_event_flags_delete(VCOS_EVENT_FLAGS_T *flags)
++{
++ vcos_mutex_delete(&flags->lock);
++}
++
++extern VCOS_STATUS_T vcos_generic_event_flags_get(VCOS_EVENT_FLAGS_T *flags,
++ VCOS_UNSIGNED bitmask,
++ VCOS_OPTION op,
++ VCOS_UNSIGNED suspend,
++ VCOS_UNSIGNED *retrieved_bits)
++{
++ VCOS_EVENT_WAITER_T waitreq;
++ VCOS_STATUS_T rc = VCOS_EAGAIN;
++ int satisfied = 0;
++
++ vcos_assert(flags);
++
++ /* default retrieved bits to 0 */
++ *retrieved_bits = 0;
++
++ vcos_mutex_lock(&flags->lock);
++ switch (op & VCOS_EVENT_FLAG_OP_MASK)
++ {
++ case VCOS_AND:
++ if ((flags->events & bitmask) == bitmask)
++ {
++ *retrieved_bits = flags->events;
++ rc = VCOS_SUCCESS;
++ satisfied = 1;
++ if (op & VCOS_CONSUME)
++ flags->events &= ~bitmask;
++ }
++ break;
++
++ case VCOS_OR:
++ if (flags->events & bitmask)
++ {
++ *retrieved_bits = flags->events;
++ rc = VCOS_SUCCESS;
++ satisfied = 1;
++ if (op & VCOS_CONSUME)
++ flags->events &= ~bitmask;
++ }
++ break;
++
++ default:
++ vcos_assert(0);
++ rc = VCOS_EINVAL;
++ break;
++ }
++
++ if (!satisfied && suspend)
++ {
++ /* Have to go to sleep.
++ *
++ * Append to tail so we get FIFO ordering.
++ */
++ waitreq.requested_events = bitmask;
++ waitreq.op = op;
++ waitreq.return_status = VCOS_EAGAIN;
++ waitreq.flags = flags;
++ waitreq.actual_events = 0;
++ waitreq.thread = vcos_thread_current();
++ waitreq.next = 0;
++ vcos_assert(waitreq.thread != (VCOS_THREAD_T*)-1);
++ VCOS_QUEUE_APPEND_TAIL(&flags->waiters, &waitreq);
++
++ if (suspend != (VCOS_UNSIGNED)-1)
++ _vcos_task_timer_set(event_flags_timer_expired, &waitreq, suspend);
++
++ vcos_mutex_unlock(&flags->lock);
++ /* go to sleep and wait to be signalled or timeout */
++
++ _vcos_thread_sem_wait();
++
++ *retrieved_bits = waitreq.actual_events;
++ rc = waitreq.return_status;
++
++ /* cancel the timer - do not do this while holding the mutex as it
++ * might be waiting for the timeout function to complete, which will
++ * try to take the mutex.
++ */
++ if (suspend != (VCOS_UNSIGNED)-1)
++ _vcos_task_timer_cancel();
++ }
++ else
++ {
++ vcos_mutex_unlock(&flags->lock);
++ }
++
++ return rc;
++}
++
++
++/** Called when a get call times out. Remove this thread's
++ * entry from the waiting queue, then resume the thread.
++ */
++static void event_flags_timer_expired(void *cxt)
++{
++ VCOS_EVENT_WAITER_T *waitreq = (VCOS_EVENT_WAITER_T *)cxt;
++ VCOS_EVENT_FLAGS_T *flags = waitreq->flags;
++ VCOS_EVENT_WAITER_T **plist;
++ VCOS_EVENT_WAITER_T *prev = NULL;
++ VCOS_THREAD_T *thread = 0;
++
++ vcos_assert(flags);
++
++ vcos_mutex_lock(&flags->lock);
++
++ /* walk the list of waiting threads on this event group, and remove
++ * the one that has expired.
++ *
++ * FIXME: could use doubly-linked list if lots of threads are found
++ * to be waiting on a single event flag instance.
++ */
++ plist = &flags->waiters.head;
++ while (*plist != NULL)
++ {
++ if (*plist == waitreq)
++ {
++ int at_end;
++ /* found it */
++ thread = (*plist)->thread;
++ at_end = ((*plist)->next == NULL);
++
++ /* link past */
++ *plist = (*plist)->next;
++ if (at_end)
++ flags->waiters.tail = prev;
++
++ break;
++ }
++ prev = *plist;
++ plist = &(*plist)->next;
++ }
++ vcos_assert(waiter_list_valid(flags));
++
++ vcos_mutex_unlock(&flags->lock);
++
++ if (thread)
++ {
++ _vcos_thread_sem_post(thread);
++ }
++}
++
++#ifndef NDEBUG
++
++static int waiter_list_valid(VCOS_EVENT_FLAGS_T *flags)
++{
++ int valid;
++ /* Either both head and tail are NULL, or neither are NULL */
++ if (flags->waiters.head == NULL)
++ {
++ valid = (flags->waiters.tail == NULL);
++ }
++ else
++ {
++ valid = (flags->waiters.tail != NULL);
++ }
++
++ /* If head and tail point at the same non-NULL element, then there
++ * is only one element in the list.
++ */
++ if (flags->waiters.head && (flags->waiters.head == flags->waiters.tail))
++ {
++ valid = (flags->waiters.head->next == NULL);
++ }
++ return valid;
++}
++
++#endif
+--- /dev/null
++++ b/drivers/misc/vc04_services/interface/vcos/generic/vcos_generic_event_flags.h
+@@ -0,0 +1,104 @@
++/*=============================================================================
++Copyright (c) 2009 Broadcom Europe Limited.
++All rights reserved.
++
++FILE DESCRIPTION
++VideoCore OS Abstraction Layer - event flags implemented via a semaphore
++=============================================================================*/
++
++#ifndef VCOS_GENERIC_EVENT_FLAGS_H
++#define VCOS_GENERIC_EVENT_FLAGS_H
++
++#ifdef __cplusplus
++extern "C" {
++#endif
++
++#include "interface/vcos/vcos_types.h"
++
++/**
++ * \file
++ *
++ * This provides event flags (as per Nucleus Event Groups) based on a
++ * mutex, a semaphore (per waiting thread) and a timer (per waiting
++ * thread).
++ *
++ * The data structure is a 32 bit unsigned int (the current set of
++ * flags) and a linked list of clients waiting to be 'satisfied'.
++ *
++ * The mutex merely locks access to the data structure. If a client
++ * calls vcos_event_flags_get() and the requested bits are not already
++ * present, it then sleeps on its per-thread semaphore after adding
++ * this semaphore to the queue waiting. It also sets up a timer.
++ *
++ * The per-thread semaphore and timer are actually stored in the
++ * thread context (joinable thread). In future it may become necessary
++ * to support non-VCOS threads by using thread local storage to
++ * create these objects and associate them with the thread.
++ */
++
++struct VCOS_EVENT_WAITER_T;
++
++typedef struct VCOS_EVENT_FLAGS_T
++{
++ VCOS_UNSIGNED events; /**< Events currently set */
++ VCOS_MUTEX_T lock; /**< Serialize access */
++ struct
++ {
++ struct VCOS_EVENT_WAITER_T *head; /**< List of threads waiting */
++ struct VCOS_EVENT_WAITER_T *tail; /**< List of threads waiting */
++ } waiters;
++} VCOS_EVENT_FLAGS_T;
++
++#define VCOS_OR 1
++#define VCOS_AND 2
++#define VCOS_CONSUME 4
++#define VCOS_OR_CONSUME (VCOS_OR | VCOS_CONSUME)
++#define VCOS_AND_CONSUME (VCOS_AND | VCOS_CONSUME)
++#define VCOS_EVENT_FLAG_OP_MASK (VCOS_OR|VCOS_AND)
++
++VCOSPRE_ VCOS_STATUS_T VCOSPOST_ vcos_generic_event_flags_create(VCOS_EVENT_FLAGS_T *flags, const char *name);
++VCOSPRE_ void VCOSPOST_ vcos_generic_event_flags_set(VCOS_EVENT_FLAGS_T *flags,
++ VCOS_UNSIGNED events,
++ VCOS_OPTION op);
++VCOSPRE_ void VCOSPOST_ vcos_generic_event_flags_delete(VCOS_EVENT_FLAGS_T *);
++VCOSPRE_ VCOS_STATUS_T VCOSPOST_ vcos_generic_event_flags_get(VCOS_EVENT_FLAGS_T *flags,
++ VCOS_UNSIGNED requested_events,
++ VCOS_OPTION op,
++ VCOS_UNSIGNED suspend,
++ VCOS_UNSIGNED *retrieved_events);
++
++#ifdef VCOS_INLINE_BODIES
++
++VCOS_INLINE_IMPL
++VCOS_STATUS_T vcos_event_flags_create(VCOS_EVENT_FLAGS_T *flags, const char *name) {
++ return vcos_generic_event_flags_create(flags, name);
++}
++
++VCOS_INLINE_IMPL
++void vcos_event_flags_set(VCOS_EVENT_FLAGS_T *flags,
++ VCOS_UNSIGNED events,
++ VCOS_OPTION op) {
++ vcos_generic_event_flags_set(flags, events, op);
++}
++
++VCOS_INLINE_IMPL
++void vcos_event_flags_delete(VCOS_EVENT_FLAGS_T *f) {
++ vcos_generic_event_flags_delete(f);
++}
++
++VCOS_INLINE_IMPL
++VCOS_STATUS_T vcos_event_flags_get(VCOS_EVENT_FLAGS_T *flags,
++ VCOS_UNSIGNED requested_events,
++ VCOS_OPTION op,
++ VCOS_UNSIGNED suspend,
++ VCOS_UNSIGNED *retrieved_events) {
++ return vcos_generic_event_flags_get(flags, requested_events, op, suspend, retrieved_events);
++}
++
++#endif /* VCOS_INLINE_BODIES */
++
++#ifdef __cplusplus
++}
++#endif
++#endif
++
+--- /dev/null
++++ b/drivers/misc/vc04_services/interface/vcos/generic/vcos_generic_named_sem.h
+@@ -0,0 +1,81 @@
++/*=============================================================================
++Copyright (c) 2009 Broadcom Europe Limited.
++All rights reserved.
++
++Project : vcfw
++Module : chip driver
++
++FILE DESCRIPTION
++VideoCore OS Abstraction Layer - named semaphores
++=============================================================================*/
++
++#ifndef VCOS_GENERIC_NAMED_SEM_H
++#define VCOS_GENERIC_NAMED_SEM_H
++
++#ifdef __cplusplus
++extern "C" {
++#endif
++
++#include "interface/vcos/vcos_types.h"
++
++/**
++ * \file
++ *
++ * Generic support for named semaphores, using regular ones. This is only
++ * suitable for emulating them on an embedded MMUless system, since there is
++ * no support for opening semaphores across process boundaries.
++ *
++ */
++
++#define VCOS_NAMED_SEMAPHORE_NAMELEN 64
++
++/* In theory we could use the name facility provided within Nucleus. However, this
++ * is hard to do as semaphores are constantly being created and destroyed; we
++ * would need to stop everything while allocating the memory for the semaphore
++ * list and then walking it. So keep our own list.
++ */
++typedef struct VCOS_NAMED_SEMAPHORE_T
++{
++ struct VCOS_NAMED_SEMAPHORE_IMPL_T *actual; /**< There are 'n' named semaphores per 1 actual semaphore */
++ VCOS_SEMAPHORE_T *sem; /**< Pointer to actual underlying semaphore */
++} VCOS_NAMED_SEMAPHORE_T;
++
++VCOSPRE_ VCOS_STATUS_T VCOSPOST_
++vcos_generic_named_semaphore_create(VCOS_NAMED_SEMAPHORE_T *sem, const char *name, VCOS_UNSIGNED count);
++
++VCOSPRE_ void VCOSPOST_ vcos_named_semaphore_delete(VCOS_NAMED_SEMAPHORE_T *sem);
++
++VCOSPRE_ VCOS_STATUS_T VCOSPOST_ _vcos_named_semaphore_init(void);
++VCOSPRE_ void VCOSPOST_ _vcos_named_semaphore_deinit(void);
++
++#if defined(VCOS_INLINE_BODIES)
++
++VCOS_INLINE_IMPL
++VCOS_STATUS_T vcos_named_semaphore_create(VCOS_NAMED_SEMAPHORE_T *sem, const char *name, VCOS_UNSIGNED count) {
++ return vcos_generic_named_semaphore_create(sem, name, count);
++}
++
++VCOS_INLINE_IMPL
++void vcos_named_semaphore_wait(VCOS_NAMED_SEMAPHORE_T *sem) {
++ vcos_semaphore_wait(sem->sem);
++}
++
++VCOS_INLINE_IMPL
++VCOS_STATUS_T vcos_named_semaphore_trywait(VCOS_NAMED_SEMAPHORE_T *sem) {
++ return vcos_semaphore_trywait(sem->sem);
++}
++
++VCOS_INLINE_IMPL
++void vcos_named_semaphore_post(VCOS_NAMED_SEMAPHORE_T *sem) {
++ vcos_semaphore_post(sem->sem);
++}
++
++
++#endif
++
++#ifdef __cplusplus
++}
++#endif
++#endif
++
++
+--- /dev/null
++++ b/drivers/misc/vc04_services/interface/vcos/generic/vcos_generic_quickslow_mutex.h
+@@ -0,0 +1,75 @@
++/*=============================================================================
++Copyright (c) 2009 Broadcom Europe Limited.
++All rights reserved.
++
++Project : vcfw
++Module : chip driver
++
++FILE DESCRIPTION
++VideoCore OS Abstraction Layer - reentrant mutexes created from regular ones.
++=============================================================================*/
++
++#ifndef VCOS_GENERIC_QUICKSLOW_MUTEX_H
++#define VCOS_GENERIC_QUICKSLOW_MUTEX_H
++
++#ifdef __cplusplus
++extern "C" {
++#endif
++
++#include "interface/vcos/vcos_types.h"
++
++/**
++ * \file
++ *
++ * Quickslow Mutexes implemented as regular ones (i.e. quick and slow modes are the same).
++ *
++ */
++
++typedef VCOS_MUTEX_T VCOS_QUICKSLOW_MUTEX_T;
++
++#if defined(VCOS_INLINE_BODIES)
++VCOS_INLINE_IMPL
++VCOS_STATUS_T vcos_quickslow_mutex_create(VCOS_QUICKSLOW_MUTEX_T *m, const char *name)
++{
++ return vcos_mutex_create(m, name);
++}
++
++VCOS_INLINE_IMPL
++void vcos_quickslow_mutex_delete(VCOS_QUICKSLOW_MUTEX_T *m)
++{
++ vcos_mutex_delete(m);
++}
++
++VCOS_INLINE_IMPL
++void vcos_quickslow_mutex_lock(VCOS_QUICKSLOW_MUTEX_T *m)
++{
++ while (vcos_mutex_lock(m) == VCOS_EAGAIN);
++}
++
++VCOS_INLINE_IMPL
++void vcos_quickslow_mutex_unlock(VCOS_QUICKSLOW_MUTEX_T *m)
++{
++ vcos_mutex_unlock(m);
++}
++
++VCOS_INLINE_IMPL
++void vcos_quickslow_mutex_lock_quick(VCOS_QUICKSLOW_MUTEX_T *m)
++{
++ while (vcos_mutex_lock(m) == VCOS_EAGAIN);
++}
++
++VCOS_INLINE_IMPL
++void vcos_quickslow_mutex_unlock_quick(VCOS_QUICKSLOW_MUTEX_T *m)
++{
++ vcos_mutex_unlock(m);
++}
++
++#endif
++
++
++#ifdef __cplusplus
++}
++#endif
++#endif
++
++
+--- /dev/null
++++ b/drivers/misc/vc04_services/interface/vcos/generic/vcos_generic_reentrant_mtx.h
+@@ -0,0 +1,75 @@
++/*=============================================================================
++Copyright (c) 2009 Broadcom Europe Limited.
++All rights reserved.
++
++Project : vcfw
++Module : chip driver
++
++FILE DESCRIPTION
++VideoCore OS Abstraction Layer - reentrant mutexes created from regular ones.
++=============================================================================*/
++
++#ifndef VCOS_GENERIC_REENTRANT_MUTEX_H
++#define VCOS_GENERIC_REENTRANT_MUTEX_H
++
++#ifdef __cplusplus
++extern "C" {
++#endif
++
++#include "interface/vcos/vcos_types.h"
++
++/**
++ * \file
++ *
++ * Reentrant Mutexes from regular ones.
++ *
++ */
++
++typedef struct VCOS_REENTRANT_MUTEX_T
++{
++ VCOS_MUTEX_T mutex;
++ VCOS_THREAD_T *owner;
++ unsigned count;
++} VCOS_REENTRANT_MUTEX_T;
++
++/* Extern definitions of functions that do the actual work */
++
++VCOSPRE_ VCOS_STATUS_T VCOSPOST_ vcos_generic_reentrant_mutex_create(VCOS_REENTRANT_MUTEX_T *m, const char *name);
++
++VCOSPRE_ void VCOSPOST_ vcos_generic_reentrant_mutex_delete(VCOS_REENTRANT_MUTEX_T *m);
++
++VCOSPRE_ void VCOSPOST_ vcos_generic_reentrant_mutex_lock(VCOS_REENTRANT_MUTEX_T *m);
++
++VCOSPRE_ void VCOSPOST_ vcos_generic_reentrant_mutex_unlock(VCOS_REENTRANT_MUTEX_T *m);
++
++/* Inline forwarding functions */
++
++#if defined(VCOS_INLINE_BODIES)
++
++VCOS_INLINE_IMPL
++VCOS_STATUS_T vcos_reentrant_mutex_create(VCOS_REENTRANT_MUTEX_T *m, const char *name) {
++ return vcos_generic_reentrant_mutex_create(m,name);
++}
++
++VCOS_INLINE_IMPL
++void vcos_reentrant_mutex_delete(VCOS_REENTRANT_MUTEX_T *m) {
++ vcos_generic_reentrant_mutex_delete(m);
++}
++
++VCOS_INLINE_IMPL
++void vcos_reentrant_mutex_lock(VCOS_REENTRANT_MUTEX_T *m) {
++ vcos_generic_reentrant_mutex_lock(m);
++}
++
++VCOS_INLINE_IMPL
++void vcos_reentrant_mutex_unlock(VCOS_REENTRANT_MUTEX_T *m) {
++ vcos_generic_reentrant_mutex_unlock(m);
++}
++#endif
++
++#ifdef __cplusplus
++}
++#endif
++#endif
++
++
+--- /dev/null
++++ b/drivers/misc/vc04_services/interface/vcos/generic/vcos_generic_tls.h
+@@ -0,0 +1,144 @@
++/*=============================================================================
++Copyright (c) 2009 Broadcom Europe Limited.
++All rights reserved.
++
++Project : vcfw
++Module : chip driver
++
++FILE DESCRIPTION
++VideoCore OS Abstraction Layer - generic thread local storage
++=============================================================================*/
++
++#ifndef VCOS_GENERIC_TLS_H
++#define VCOS_GENERIC_TLS_H
++
++#ifdef __cplusplus
++extern "C" {
++#endif
++
++#include "interface/vcos/vcos_types.h"
++
++/**
++ * \file
++ *
++ * Do an emulation of Thread Local Storage. The platform needs to
++ * provide a way to set and get a per-thread pointer which is
++ * where the TLS data itself is stored.
++ *
++ *
++ * Each thread that wants to join in this scheme needs to call
++ * vcos_tls_thread_register().
++ *
++ * The platform needs to support the macros/functions
++ * _vcos_tls_thread_ptr_set() and _vcos_tls_thread_ptr_get().
++ */
++
++#ifndef VCOS_WANT_TLS_EMULATION
++#error Should not be included unless TLS emulation is defined
++#endif
++
++/** Number of slots to reserve per thread. This results in an overhead
++ * of this many words per thread.
++ */
++#define VCOS_TLS_MAX_SLOTS 4
++
++/** TLS key. Allocating one of these reserves the client one of the
++ * available slots.
++ */
++typedef VCOS_UNSIGNED VCOS_TLS_KEY_T;
++
++/** TLS per-thread structure. Each thread gets one of these
++ * if TLS emulation (rather than native TLS support) is
++ * being used.
++ */
++typedef struct VCOS_TLS_THREAD_T
++{
++ void *slots[VCOS_TLS_MAX_SLOTS];
++} VCOS_TLS_THREAD_T;
++
++/*
++ * Internal APIs
++ */
++
++/** Register this thread's TLS storage area. */
++VCOSPRE_ void VCOSPOST_ vcos_tls_thread_register(VCOS_TLS_THREAD_T *);
++
++/** Create a new TLS key */
++VCOSPRE_ VCOS_STATUS_T VCOSPOST_ vcos_generic_tls_create(VCOS_TLS_KEY_T *key);
++
++/** Delete a TLS key */
++VCOSPRE_ void VCOSPOST_ vcos_generic_tls_delete(VCOS_TLS_KEY_T tls);
++
++/** Initialise the TLS library */
++VCOSPRE_ VCOS_STATUS_T VCOSPOST_ vcos_tls_init(void);
++
++/** Deinitialise the TLS library */
++VCOSPRE_ void VCOSPOST_ vcos_tls_deinit(void);
++
++#if defined(VCOS_INLINE_BODIES)
++
++#undef VCOS_ASSERT_LOGGING_DISABLE
++#define VCOS_ASSERT_LOGGING_DISABLE 1
++
++/*
++ * Implementations of public API functions
++ */
++
++/** Set the given value. Since everything is per-thread, there is no need
++ * for any locking.
++ */
++VCOS_INLINE_IMPL
++VCOS_STATUS_T vcos_tls_set(VCOS_TLS_KEY_T tls, void *v) {
++ VCOS_TLS_THREAD_T *tlsdata = _vcos_tls_thread_ptr_get();
++ vcos_assert(tlsdata); /* Fires if this thread has not been registered */
++ if (tls<VCOS_TLS_MAX_SLOTS)
++ {
++ tlsdata->slots[tls] = v;
++ return VCOS_SUCCESS;
++ }
++ else
++ {
++ vcos_assert(0);
++ return VCOS_EINVAL;
++ }
++}
++
++/** Get the given value. No locking required.
++ */
++VCOS_INLINE_IMPL
++void *vcos_tls_get(VCOS_TLS_KEY_T tls) {
++ VCOS_TLS_THREAD_T *tlsdata = _vcos_tls_thread_ptr_get();
++ vcos_assert(tlsdata); /* Fires if this thread has not been registered */
++ if (tls<VCOS_TLS_MAX_SLOTS)
++ {
++ return tlsdata->slots[tls];
++ }
++ else
++ {
++ vcos_assert(0);
++ return NULL;
++ }
++}
++
++VCOS_INLINE_IMPL
++VCOS_STATUS_T vcos_tls_create(VCOS_TLS_KEY_T *key) {
++ return vcos_generic_tls_create(key);
++}
++
++VCOS_INLINE_IMPL
++void vcos_tls_delete(VCOS_TLS_KEY_T tls) {
++ vcos_generic_tls_delete(tls);
++}
++
++#undef VCOS_ASSERT_LOGGING_DISABLE
++#define VCOS_ASSERT_LOGGING_DISABLE 0
++
++#endif /* VCOS_INLINE_BODIES */
++
++#ifdef __cplusplus
++}
++#endif
++
++#endif
++
++
+--- /dev/null
++++ b/drivers/misc/vc04_services/interface/vcos/generic/vcos_joinable_thread_from_plain.h
+@@ -0,0 +1,202 @@
++/*=============================================================================
++Copyright (c) 2009 Broadcom Europe Limited.
++All rights reserved.
++
++Module : vcos
++
++FILE DESCRIPTION
++VideoCore OS Abstraction Layer - implementation: joinable thread from plain
++=============================================================================*/
++
++/** \file
++ *
++ * Header file for platforms creating the joinable thread from a lowlevel
++ * thread.
++ *
++ * In addition to the actual thread, the following are also created:
++ *
++ * - a semaphore to wait on when joining the thread
++ * - a semaphore to support counted suspend/resume (used by event group)
++ * - a per-thread timer (used by event group, but could be removed)
++ */
++
++#ifndef VCOS_JOINABLE_THREAD_FROM_PLAIN_H
++#define VCOS_JOINABLE_THREAD_FROM_PLAIN_H
++
++#ifdef __cplusplus
++extern "C" {
++#endif
++
++#include "interface/vcos/vcos_semaphore.h"
++#include "interface/vcos/vcos_lowlevel_thread.h"
++#include "interface/vcos/vcos_timer.h"
++
++#ifdef VCOS_WANT_TLS_EMULATION
++#include "interface/vcos/generic/vcos_generic_tls.h"
++#endif
++
++#define VCOS_THREAD_MAGIC 0x56436a74
++
++#define VCOS_THREAD_VALID(t) (t->magic == VCOS_THREAD_MAGIC)
++#define VCOS_HAVE_THREAD_AT_EXIT 1
++
++/** Thread attribute structure. Clients should not manipulate this directly, but
++ * should instead use the provided functions.
++ */
++typedef struct VCOS_THREAD_ATTR_T
++{
++ void *ta_stackaddr;
++ VCOS_UNSIGNED ta_stacksz;
++ VCOS_UNSIGNED ta_priority;
++ VCOS_UNSIGNED ta_affinity;
++ VCOS_UNSIGNED ta_timeslice;
++ VCOS_UNSIGNED legacy;
++ VCOS_UNSIGNED ta_autostart;
++} VCOS_THREAD_ATTR_T;
++
++/** Each thread gets a timer, which is for internal VCOS use.
++ */
++typedef struct _VCOS_THREAD_TIMER_T
++{
++ VCOS_TIMER_T timer;
++ void (*pfn)(void *);
++ void *cxt;
++} _VCOS_THREAD_TIMER_T;
++
++typedef void (*VCOS_THREAD_EXIT_HANDLER_T)(void *);
++/** Called at thread exit.
++ */
++typedef struct VCOS_THREAD_EXIT_T
++{
++ VCOS_THREAD_EXIT_HANDLER_T pfn;
++ void *cxt;
++} VCOS_THREAD_EXIT_T;
++#define VCOS_MAX_EXIT_HANDLERS 8
++
++/* The name field isn't used for anything, so we can just copy the
++ * the pointer. Nucleus makes its own copy.
++ */
++typedef const char * VCOS_LLTHREAD_T_NAME;
++#define _VCOS_LLTHREAD_NAME(dst,src) (dst)=(src)
++
++/*
++ * Simulated TLS support
++ */
++
++
++/** Thread structure.
++ *
++ * \warning Do not access the members of this structure directly!
++ */
++typedef struct VCOS_THREAD_T
++{
++ VCOS_LLTHREAD_T thread; /**< The underlying thread */
++ char name[16]; /**< The name */
++ unsigned int magic; /**< For debug */
++ void *exit_data; /**< Exit data passed out in vcos_joinable_thread_exit() */
++ void *stack; /**< Stack, if not supplied by caller */
++ VCOS_SEMAPHORE_T wait; /**< Semaphore to wait on at join */
++ VCOS_SEMAPHORE_T suspend; /**< Semaphore to wait on for counted suspend */
++ int16_t joined; /**< Joined yet? For debug. */
++ VCOS_UNSIGNED legacy; /**< Use (argc,argv) for entry point arguments */
++ void *(*entry)(void*); /**< Entry point */
++ void *arg; /**< Argument passed to entry point */
++ void *(*term)(void*); /**< Termination function, used by reaper */
++ void *term_arg; /**< Argument passed to termination function */
++ _VCOS_THREAD_TIMER_T _timer; /**< Internal timer, mainly for event groups */
++#ifdef VCOS_WANT_TLS_EMULATION
++ VCOS_TLS_THREAD_T _tls; /**< TLS data when native TLS not available, or NULL */
++#endif
++ /** Array of functions to call at thread exit */
++ VCOS_THREAD_EXIT_T at_exit[VCOS_MAX_EXIT_HANDLERS];
++
++ struct VCOS_THREAD_T *next; /**< For linked lists of threads */
++} VCOS_THREAD_T;
++
++#if defined(VCOS_INLINE_BODIES)
++
++VCOS_INLINE_IMPL
++void vcos_thread_attr_setstack(VCOS_THREAD_ATTR_T *attrs, void *addr, VCOS_UNSIGNED stacksz) {
++ attrs->ta_stackaddr = addr;
++ attrs->ta_stacksz = stacksz;
++}
++
++VCOS_INLINE_IMPL
++void vcos_thread_attr_setstacksize(VCOS_THREAD_ATTR_T *attrs, VCOS_UNSIGNED stacksz) {
++ attrs->ta_stacksz = stacksz;
++}
++
++VCOS_INLINE_IMPL
++void vcos_thread_attr_setpriority(VCOS_THREAD_ATTR_T *attrs, VCOS_UNSIGNED pri) {
++ attrs->ta_priority = pri;
++}
++
++VCOS_INLINE_IMPL
++void vcos_thread_attr_setaffinity(VCOS_THREAD_ATTR_T *attrs, VCOS_UNSIGNED affinity) {
++ attrs->ta_affinity = affinity;
++}
++
++VCOS_INLINE_IMPL
++void vcos_thread_attr_settimeslice(VCOS_THREAD_ATTR_T *attrs, VCOS_UNSIGNED ts) {
++ attrs->ta_timeslice = ts;
++}
++
++VCOS_INLINE_IMPL
++void _vcos_thread_attr_setlegacyapi(VCOS_THREAD_ATTR_T *attrs, VCOS_UNSIGNED legacy) {
++ attrs->legacy = legacy;
++}
++
++VCOS_INLINE_IMPL
++void vcos_thread_attr_setautostart(VCOS_THREAD_ATTR_T *attrs, VCOS_UNSIGNED autostart) {
++ attrs->ta_autostart = autostart;
++}
++
++VCOS_INLINE_IMPL
++VCOS_THREAD_T *vcos_thread_current(void) {
++ VCOS_THREAD_T *ret = (VCOS_THREAD_T*)vcos_llthread_current();
++ /*If we're called from a non-vcos thread, this assert will fail.
++ *XXX FIXME why is this commented out?
++ *vcos_assert(ret->magic == VCOS_THREAD_MAGIC);
++ */
++ return ret;
++}
++
++VCOS_INLINE_IMPL
++int vcos_thread_running(VCOS_THREAD_T *thread) {
++ return vcos_llthread_running(&thread->thread);
++}
++
++VCOS_INLINE_IMPL
++void vcos_thread_resume(VCOS_THREAD_T *thread) {
++ vcos_llthread_resume(&thread->thread);
++}
++
++#endif /* VCOS_INLINE_BODIES */
++
++/**
++ * \brief Create a VCOS_THREAD_T for the current thread. This is so we can have
++ * VCOS_THREAD_Ts even for threads not originally created by VCOS (eg the
++ * thread that calls vcos_init)
++ */
++extern VCOS_STATUS_T _vcos_thread_create_attach(VCOS_THREAD_T *thread,
++ const char *name);
++
++/**
++ * \brief Deletes the VCOS_THREAD_T, but does not wait for the underlying
++ * thread to exit. This will cleanup everything created by
++ * _vcos_thread_create_attach
++ */
++extern void _vcos_thread_delete(VCOS_THREAD_T *thread);
++
++/** Register a function to be called when the current thread exits.
++ */
++extern VCOS_STATUS_T vcos_thread_at_exit(void (*pfn)(void*), void *cxt);
++
++/** Deregister a previously registered at-exit function.
++ */
++extern void vcos_thread_deregister_at_exit(void (*pfn)(void*), void *cxt);
++
++#ifdef __cplusplus
++}
++#endif
++#endif /* VCOS_JOINABLE_THREAD_FROM_PLAIN_H */
+--- /dev/null
++++ b/drivers/misc/vc04_services/interface/vcos/generic/vcos_latch_from_sem.h
+@@ -0,0 +1,48 @@
++/*=============================================================================
++Copyright (c) 2009 Broadcom Europe Limited.
++All rights reserved.
++
++Project : vcfw
++Module : vcos
++
++FILE DESCRIPTION
++VideoCore OS Abstraction Layer - Construct a latch from a semaphore
++=============================================================================*/
++
++/** FIXME: rename to vcos_mutex_from_sem.c
++ */
++
++typedef struct VCOS_MUTEX_T {
++ VCOS_SEMAPHORE_T sem;
++ struct VCOS_THREAD_T *owner;
++} VCOS_MUTEX_T;
++
++extern VCOS_STATUS_T vcos_generic_mutex_create(VCOS_MUTEX_T *latch, const char *name);
++extern void vcos_generic_mutex_delete(VCOS_MUTEX_T *latch);
++extern VCOS_STATUS_T vcos_generic_mutex_lock(VCOS_MUTEX_T *latch);
++extern void vcos_generic_mutex_unlock(VCOS_MUTEX_T *latch);
++
++#if defined(VCOS_INLINE_BODIES)
++
++VCOS_INLINE_IMPL
++VCOS_STATUS_T vcos_mutex_create(VCOS_MUTEX_T *latch, const char *name) {
++ return vcos_generic_mutex_create(latch,name);
++}
++
++VCOS_INLINE_IMPL
++void vcos_mutex_delete(VCOS_MUTEX_T *latch) {
++ vcos_generic_mutex_delete(latch);
++}
++
++VCOS_INLINE_IMPL
++VCOS_STATUS_T vcos_mutex_lock(VCOS_MUTEX_T *latch) {
++ return vcos_generic_mutex_lock(latch);
++}
++
++VCOS_INLINE_IMPL
++void vcos_mutex_unlock(VCOS_MUTEX_T *latch) {
++ vcos_generic_mutex_unlock(latch);
++}
++
++#endif /* VCOS_INLINE_BODIES */
++
+--- /dev/null
++++ b/drivers/misc/vc04_services/interface/vcos/generic/vcos_logcat.c
+@@ -0,0 +1,549 @@
++/*=============================================================================
++Copyright (c) 2010 Broadcom Europe Limited.
++All rights reserved.
++
++Project : vcfw
++Module : vcos
++
++FILE DESCRIPTION
++Categorized logging for VCOS - a generic implementation.
++=============================================================================*/
++
++#include "interface/vcos/vcos.h"
++#include "interface/vcos/vcos_ctype.h"
++#include "interface/vcos/vcos_string.h"
++
++static VCOS_MUTEX_T lock;
++static int warned_loglevel; /* only warn about invalid log level once */
++static VCOS_VLOG_IMPL_FUNC_T vcos_vlog_impl_func = vcos_vlog_default_impl;
++
++#define VCOS_LOG_CATEGORY (&dflt_log_category)
++static VCOS_LOG_CAT_T dflt_log_category;
++VCOS_LOG_CAT_T *vcos_logging_categories = NULL;
++static int inited;
++
++#if VCOS_HAVE_CMD
++
++/*
++ * For kernel or videocore purposes, we generally want the log command. For
++ * user-space apps, they might want to provide their own log command, so we
++ * don't include the built in on.
++ *
++ * So pthreads/vcos_platform.h defines VCOS_WANT_LOG_CMD to be 0. It is
++ * undefined elsewhere.
++ */
++
++# if !defined( VCOS_WANT_LOG_CMD )
++# define VCOS_WANT_LOG_CMD 1
++# endif
++#else
++# define VCOS_WANT_LOG_CMD 0
++#endif
++
++#if VCOS_WANT_LOG_CMD
++
++/*****************************************************************************
++*
++* Does a vcos_assert(0), which is useful to test logging.
++*
++*****************************************************************************/
++
++VCOS_STATUS_T vcos_log_assert_cmd( VCOS_CMD_PARAM_T *param )
++{
++ (void)param;
++
++#if defined( NDEBUG ) && !defined( VCOS_RELEASE_ASSERTS )
++ vcos_log_error( "vcos_asserts have been compiled out" );
++ vcos_cmd_printf( param, "vcos_asserts have been compiled out - did a vcos_log_error instead\n" );
++#else
++ vcos_assert(0);
++ vcos_cmd_printf( param, "Executed vcos_assert(0)\n" );
++#endif
++
++ return VCOS_SUCCESS;
++}
++
++/*****************************************************************************
++*
++* Sets a vcos logging level
++*
++*****************************************************************************/
++
++VCOS_STATUS_T vcos_log_set_cmd( VCOS_CMD_PARAM_T *param )
++{
++ VCOS_LOG_CAT_T *cat;
++ char *name;
++ char *levelStr;
++ VCOS_LOG_LEVEL_T level;
++ VCOS_STATUS_T status;
++
++ if ( param->argc != 3 )
++ {
++ vcos_cmd_usage( param );
++ return VCOS_EINVAL;
++ }
++
++ name = param->argv[1];
++ levelStr = param->argv[2];
++
++ if ( vcos_string_to_log_level( levelStr, &level ) != VCOS_SUCCESS )
++ {
++ vcos_cmd_printf( param, "Unrecognized logging level: '%s'\n", levelStr );
++ return VCOS_EINVAL;
++ }
++
++ vcos_mutex_lock(&lock);
++
++ status = VCOS_SUCCESS;
++ for ( cat = vcos_logging_categories; cat != NULL; cat = cat->next )
++ {
++ if ( vcos_strcmp( name, cat->name ) == 0 )
++ {
++ cat->level = level;
++ vcos_cmd_printf( param, "Category %s level set to %s\n", name, levelStr );
++ break;
++ }
++ }
++ if ( cat == NULL )
++ {
++ vcos_cmd_printf( param, "Unrecognized category: '%s'\n", name );
++ status = VCOS_ENOENT;
++ }
++
++ vcos_mutex_unlock(&lock);
++
++ return status;
++}
++
++/*****************************************************************************
++*
++* Prints out the current settings for a given category (or all cvategories)
++*
++*****************************************************************************/
++
++VCOS_STATUS_T vcos_log_status_cmd( VCOS_CMD_PARAM_T *param )
++{
++ VCOS_LOG_CAT_T *cat;
++ VCOS_STATUS_T status;
++
++ vcos_mutex_lock(&lock);
++
++ if ( param->argc == 1)
++ {
++ int nw;
++ int nameWidth = 0;
++
++ /* Print information about all of the categories. */
++
++ for ( cat = vcos_logging_categories; cat != NULL; cat = cat->next )
++ {
++ nw = (int)strlen( cat->name );
++
++ if ( nw > nameWidth )
++ {
++ nameWidth = nw;
++ }
++ }
++
++ for ( cat = vcos_logging_categories; cat != NULL; cat = cat->next )
++ {
++ vcos_cmd_printf( param, "%-*s - %s\n", nameWidth, cat->name, vcos_log_level_to_string( cat->level ));
++ }
++ }
++ else
++ {
++ /* Print information about a particular category */
++
++ for ( cat = vcos_logging_categories; cat != NULL; cat = cat->next )
++ {
++ if ( vcos_strcmp( cat->name, param->argv[1] ) == 0 )
++ {
++ vcos_cmd_printf( param, "%s - %s\n", cat->name, vcos_log_level_to_string( cat->level ));
++ break;
++ }
++ }
++ if ( cat == NULL )
++ {
++ vcos_cmd_printf( param, "Unrecognized logging category: '%s'\n", param->argv[1] );
++ status = VCOS_ENOENT;
++ goto out;
++ }
++ }
++
++ status = VCOS_SUCCESS;
++out:
++ vcos_mutex_unlock(&lock);
++
++ return status;
++}
++
++/*****************************************************************************
++*
++* Prints out the current settings for a given category (or all cvategories)
++*
++*****************************************************************************/
++
++VCOS_STATUS_T vcos_log_test_cmd( VCOS_CMD_PARAM_T *param )
++{
++ if ( param->argc == 1 )
++ {
++ static int seq_num = 100;
++
++ /* No additional arguments - generate a message with an incrementing number */
++
++ vcos_log_error( "Test message %d", seq_num );
++
++ seq_num++;
++ vcos_cmd_printf( param, "Logged 'Test message %d'\n", seq_num );
++ }
++ else
++ {
++ int arg_idx;
++
++ /* Arguments supplied - log these */
++
++ for ( arg_idx = 0; arg_idx < param->argc; arg_idx++ )
++ {
++ vcos_log_error( "argv[%d] = '%s'", arg_idx, param->argv[arg_idx] );
++ }
++ vcos_cmd_printf( param, "Logged %d line(s) of test data\n", param->argc );
++ }
++ return VCOS_SUCCESS;
++}
++
++/*****************************************************************************
++*
++* Internal commands
++*
++*****************************************************************************/
++
++static VCOS_CMD_T log_cmd_entry[] =
++{
++ { "assert", "", vcos_log_assert_cmd, NULL, "Does a vcos_assert(0) to test logging" },
++ { "set", "category level", vcos_log_set_cmd, NULL, "Sets the vcos logging level for a category" },
++ { "status", "[category]", vcos_log_status_cmd, NULL, "Prints the vcos log status for a (or all) categories" },
++ { "test", "[arbitrary text]", vcos_log_test_cmd, NULL, "Does a vcos_log to test logging" },
++
++ { NULL, NULL, NULL, NULL, NULL }
++};
++
++static VCOS_CMD_T cmd_log =
++ { "log", "command [args]", NULL, log_cmd_entry, "Commands related to vcos logging" };
++
++#endif
++
++void vcos_logging_init(void)
++{
++ if (inited)
++ {
++ /* FIXME: should print a warning or something here */
++ return;
++ }
++ vcos_mutex_create(&lock, "vcos_log");
++
++ vcos_log_platform_init();
++
++ vcos_log_register("default", &dflt_log_category);
++
++#if VCOS_WANT_LOG_CMD
++ vcos_cmd_register( &cmd_log );
++#endif
++
++ vcos_assert(!inited);
++ inited = 1;
++}
++
++/** Read an alphanumeric token, returning True if we succeeded.
++ */
++
++static int read_tok(char *tok, size_t toklen, const char **pstr, char sep)
++{
++ const char *str = *pstr;
++ size_t n = 0;
++ char ch;
++
++ /* skip past any whitespace */
++ while (str[0] && isspace((int)(str[0])))
++ str++;
++
++ while ((ch = *str) != '\0' &&
++ ch != sep &&
++ (isalnum((int)ch) || (ch == '_')) &&
++ n != toklen-1)
++ {
++ tok[n++] = ch;
++ str++;
++ }
++
++ /* did it work out? */
++ if (ch == '\0' || ch == sep)
++ {
++ if (ch) str++; /* move to next token if not at end */
++ /* yes */
++ tok[n] = '\0';
++ *pstr = str;
++ return 1;
++ }
++ else
++ {
++ /* no */
++ return 0;
++ }
++}
++
++const char *vcos_log_level_to_string( VCOS_LOG_LEVEL_T level )
++{
++ switch (level)
++ {
++ case VCOS_LOG_UNINITIALIZED: return "uninit";
++ case VCOS_LOG_NEVER: return "never";
++ case VCOS_LOG_ERROR: return "error";
++ case VCOS_LOG_WARN: return "warn";
++ case VCOS_LOG_INFO: return "info";
++ case VCOS_LOG_TRACE: return "trace";
++ }
++ return "???";
++}
++
++VCOS_STATUS_T vcos_string_to_log_level( const char *str, VCOS_LOG_LEVEL_T *level )
++{
++ if (strcmp(str,"error") == 0)
++ *level = VCOS_LOG_ERROR;
++ else if (strcmp(str,"never") == 0)
++ *level = VCOS_LOG_NEVER;
++ else if (strcmp(str,"warn") == 0)
++ *level = VCOS_LOG_WARN;
++ else if (strcmp(str,"warning") == 0)
++ *level = VCOS_LOG_WARN;
++ else if (strcmp(str,"info") == 0)
++ *level = VCOS_LOG_INFO;
++ else if (strcmp(str,"trace") == 0)
++ *level = VCOS_LOG_TRACE;
++ else
++ return VCOS_EINVAL;
++
++ return VCOS_SUCCESS;
++}
++
++static int read_level(VCOS_LOG_LEVEL_T *level, const char **pstr, char sep)
++{
++ char buf[16];
++ int ret = 1;
++ if (read_tok(buf,sizeof(buf),pstr,sep))
++ {
++ if (vcos_string_to_log_level(buf,level) != VCOS_SUCCESS)
++ {
++ vcos_log("Invalid trace level '%s'\n", buf);
++ ret = 0;
++ }
++ }
++ else
++ {
++ ret = 0;
++ }
++ return ret;
++}
++
++void vcos_log_register(const char *name, VCOS_LOG_CAT_T *category)
++{
++ const char *env;
++ VCOS_LOG_CAT_T *i;
++
++ category->name = name;
++ if ( category->level == VCOS_LOG_UNINITIALIZED )
++ {
++ category->level = VCOS_LOG_ERROR;
++ }
++ category->flags.want_prefix = (category != &dflt_log_category );
++
++ vcos_mutex_lock(&lock);
++
++ /* is it already registered? */
++ for (i = vcos_logging_categories; i ; i = i->next )
++ {
++ if (i == category)
++ {
++ i->refcount++;
++ break;
++ }
++ }
++
++ if (!i)
++ {
++ /* not yet registered */
++ category->next = vcos_logging_categories;
++ vcos_logging_categories = category;
++ category->refcount++;
++
++ vcos_log_platform_register(category);
++ }
++
++ vcos_mutex_unlock(&lock);
++
++ /* Check to see if this log level has been enabled. Look for
++ * (<category:level>,)*
++ *
++ * VC_LOGLEVEL=ilcs:info,vchiq:warn
++ */
++
++ env = _VCOS_LOG_LEVEL();
++ if (env)
++ {
++ do
++ {
++ char env_name[64];
++ VCOS_LOG_LEVEL_T level;
++ if (read_tok(env_name, sizeof(env_name), &env, ':') &&
++ read_level(&level, &env, ','))
++ {
++ if (strcmp(env_name, name) == 0)
++ {
++ category->level = level;
++ break;
++ }
++ }
++ else
++ {
++ if (!warned_loglevel)
++ {
++ vcos_log("VC_LOGLEVEL format invalid at %s\n", env);
++ warned_loglevel = 1;
++ }
++ return;
++ }
++ } while (env[0] != '\0');
++ }
++
++ vcos_log_info( "Registered log category '%s' with level %s",
++ category->name,
++ vcos_log_level_to_string( category->level ));
++}
++
++void vcos_log_unregister(VCOS_LOG_CAT_T *category)
++{
++ VCOS_LOG_CAT_T **pcat;
++ vcos_mutex_lock(&lock);
++ category->refcount--;
++ if (category->refcount == 0)
++ {
++ pcat = &vcos_logging_categories;
++ while (*pcat != category)
++ {
++ if (!*pcat)
++ break; /* possibly deregistered twice? */
++ if ((*pcat)->next == NULL)
++ {
++ vcos_assert(0); /* already removed! */
++ vcos_mutex_unlock(&lock);
++ return;
++ }
++ pcat = &(*pcat)->next;
++ }
++ if (*pcat)
++ *pcat = category->next;
++
++ vcos_log_platform_unregister(category);
++ }
++ vcos_mutex_unlock(&lock);
++}
++
++VCOSPRE_ const VCOS_LOG_CAT_T * VCOSPOST_ vcos_log_get_default_category(void)
++{
++ return &dflt_log_category;
++}
++
++void vcos_set_log_options(const char *opt)
++{
++ (void)opt;
++}
++
++void vcos_log_dump_mem_impl( const VCOS_LOG_CAT_T *cat,
++ const char *label,
++ uint32_t addr,
++ const void *voidMem,
++ size_t numBytes )
++{
++ const uint8_t *mem = (const uint8_t *)voidMem;
++ size_t offset;
++ char lineBuf[ 100 ];
++ char *s;
++
++ while ( numBytes > 0 )
++ {
++ s = lineBuf;
++
++ for ( offset = 0; offset < 16; offset++ )
++ {
++ if ( offset < numBytes )
++ {
++ s += vcos_snprintf( s, 4, "%02x ", mem[ offset ]);
++ }
++ else
++ {
++ s += vcos_snprintf( s, 4, " " );
++ }
++ }
++
++ for ( offset = 0; offset < 16; offset++ )
++ {
++ if ( offset < numBytes )
++ {
++ uint8_t ch = mem[ offset ];
++
++ if (( ch < ' ' ) || ( ch > '~' ))
++ {
++ ch = '.';
++ }
++ *s++ = (char)ch;
++ }
++ }
++ *s++ = '\0';
++
++ if (( label != NULL ) && ( *label != '\0' ))
++ {
++ vcos_log_impl( cat, VCOS_LOG_INFO, "%s: %08x: %s", label, addr, lineBuf );
++ }
++ else
++ {
++ vcos_log_impl( cat, VCOS_LOG_INFO, "%08x: %s", addr, lineBuf );
++ }
++
++ addr += 16;
++ mem += 16;
++ if ( numBytes > 16 )
++ {
++ numBytes -= 16;
++ }
++ else
++ {
++ numBytes = 0;
++ }
++ }
++
++}
++
++void vcos_log_impl(const VCOS_LOG_CAT_T *cat, VCOS_LOG_LEVEL_T _level, const char *fmt, ...)
++{
++ va_list ap;
++ va_start(ap,fmt);
++ vcos_vlog_impl( cat, _level, fmt, ap );
++ va_end(ap);
++}
++
++void vcos_vlog_impl(const VCOS_LOG_CAT_T *cat, VCOS_LOG_LEVEL_T _level, const char *fmt, va_list args)
++{
++ vcos_vlog_impl_func( cat, _level, fmt, args );
++}
++
++void vcos_set_vlog_impl( VCOS_VLOG_IMPL_FUNC_T vlog_impl_func )
++{
++ if ( vlog_impl_func == NULL )
++ {
++ vcos_vlog_impl_func = vcos_vlog_default_impl;
++ }
++ else
++ {
++ vcos_vlog_impl_func = vlog_impl_func;
++ }
++}
++
+--- /dev/null
++++ b/drivers/misc/vc04_services/interface/vcos/generic/vcos_mem_from_malloc.c
+@@ -0,0 +1,73 @@
++/*=============================================================================
++Copyright (c) 2009 Broadcom Europe Limited.
++All rights reserved.
++
++Project : vcfw
++Module : vcos
++
++FILE DESCRIPTION
++VideoCore OS Abstraction Layer - memory alloc implementation
++=============================================================================*/
++
++#include "interface/vcos/vcos.h"
++
++#ifndef _vcos_platform_malloc
++#include <stdlib.h>
++#define _vcos_platform_malloc malloc
++#define _vcos_platform_free free
++#endif
++
++typedef struct malloc_header_s {
++ uint32_t guardword;
++ uint32_t size;
++ const char *description;
++ void *ptr;
++} MALLOC_HEADER_T;
++
++
++#define MIN_ALIGN sizeof(MALLOC_HEADER_T)
++
++#define GUARDWORDHEAP 0xa55a5aa5
++
++void *vcos_generic_mem_alloc_aligned(VCOS_UNSIGNED size, VCOS_UNSIGNED align, const char *desc)
++{
++ int local_align = align == 0 ? 1 : align;
++ int required_size = size + local_align + sizeof(MALLOC_HEADER_T);
++ void *ptr = _vcos_platform_malloc(required_size);
++ void *ret = (void *)VCOS_ALIGN_UP(((char *)ptr)+sizeof(MALLOC_HEADER_T), local_align);
++ MALLOC_HEADER_T *h = ((MALLOC_HEADER_T *)ret)-1;
++
++ h->size = size;
++ h->description = desc;
++ h->guardword = GUARDWORDHEAP;
++ h->ptr = ptr;
++
++ return ret;
++}
++
++void *vcos_generic_mem_alloc(VCOS_UNSIGNED size, const char *desc)
++{
++ return vcos_generic_mem_alloc_aligned(size,MIN_ALIGN,desc);
++}
++
++void *vcos_generic_mem_calloc(VCOS_UNSIGNED count, VCOS_UNSIGNED sz, const char *desc)
++{
++ uint32_t size = count*sz;
++ void *ptr = vcos_generic_mem_alloc_aligned(size,MIN_ALIGN,desc);
++ if (ptr)
++ {
++ memset(ptr, 0, size);
++ }
++ return ptr;
++}
++
++void vcos_generic_mem_free(void *ptr)
++{
++ MALLOC_HEADER_T *h;
++ if (! ptr) return;
++
++ h = ((MALLOC_HEADER_T *)ptr)-1;
++ vcos_assert(h->guardword == GUARDWORDHEAP);
++ _vcos_platform_free(h->ptr);
++}
++
+--- /dev/null
++++ b/drivers/misc/vc04_services/interface/vcos/generic/vcos_mem_from_malloc.h
+@@ -0,0 +1,54 @@
++/*=============================================================================
++Copyright (c) 2009 Broadcom Europe Limited.
++All rights reserved.
++
++Project : VMCS Host Apps
++Module : Framework - VMCS
++
++FILE DESCRIPTION
++Create the vcos_malloc API from the regular system malloc/free
++=============================================================================*/
++
++/**
++ * \file
++ *
++ * Create the vcos malloc API from a regular system malloc/free library.
++ *
++ * The API lets callers specify an alignment.
++ *
++ * Under VideoCore this is not needed, as we can simply use the rtos_malloc routines.
++ * But on host platforms that won't be the case.
++ *
++ */
++
++VCOSPRE_ void * VCOSPOST_ vcos_generic_mem_alloc(VCOS_UNSIGNED sz, const char *desc);
++VCOSPRE_ void * VCOSPOST_ vcos_generic_mem_calloc(VCOS_UNSIGNED count, VCOS_UNSIGNED sz, const char *descr);
++VCOSPRE_ void VCOSPOST_ vcos_generic_mem_free(void *ptr);
++VCOSPRE_ void * VCOSPOST_ vcos_generic_mem_alloc_aligned(VCOS_UNSIGNED sz, VCOS_UNSIGNED align, const char *desc);
++
++#ifdef VCOS_INLINE_BODIES
++
++VCOS_INLINE_IMPL
++void *vcos_malloc(VCOS_UNSIGNED size, const char *description) {
++ return vcos_generic_mem_alloc(size, description);
++}
++
++VCOS_INLINE_IMPL
++void *vcos_calloc(VCOS_UNSIGNED num, VCOS_UNSIGNED size, const char *description) {
++ return vcos_generic_mem_calloc(num, size, description);
++}
++
++VCOS_INLINE_IMPL
++void vcos_free(void *ptr) {
++ vcos_generic_mem_free(ptr);
++}
++
++VCOS_INLINE_IMPL
++void * vcos_malloc_aligned(VCOS_UNSIGNED size, VCOS_UNSIGNED align, const char *description) {
++ return vcos_generic_mem_alloc_aligned(size, align, description);
++}
++
++
++#endif /* VCOS_INLINE_BODIES */
++
++
+--- /dev/null
++++ b/drivers/misc/vc04_services/interface/vcos/generic/vcos_mutexes_are_reentrant.h
+@@ -0,0 +1,68 @@
++/*=============================================================================
++Copyright (c) 2009 Broadcom Europe Limited.
++All rights reserved.
++
++Project : vcfw
++Module : chip driver
++
++FILE DESCRIPTION
++VideoCore OS Abstraction Layer - reentrant mutexes mapped directly to regular ones
++=============================================================================*/
++
++#ifndef VCOS_GENERIC_REENTRANT_MUTEX_H
++#define VCOS_GENERIC_REENTRANT_MUTEX_H
++
++#ifdef __cplusplus
++extern "C" {
++#endif
++
++#include "interface/vcos/vcos_types.h"
++#include "interface/vcos/vcos_mutex.h"
++
++/**
++ * \file
++ *
++ * Reentrant Mutexes directly using the native re-entrant mutex.
++ *
++ */
++
++typedef VCOS_MUTEX_T VCOS_REENTRANT_MUTEX_T;
++
++/* Inline forwarding functions */
++
++#if defined(VCOS_INLINE_BODIES)
++
++VCOS_INLINE_IMPL
++VCOS_STATUS_T vcos_reentrant_mutex_create(VCOS_REENTRANT_MUTEX_T *m, const char *name) {
++ return vcos_mutex_create(m,name);
++}
++
++VCOS_INLINE_IMPL
++void vcos_reentrant_mutex_delete(VCOS_REENTRANT_MUTEX_T *m) {
++ vcos_mutex_delete(m);
++}
++
++VCOS_INLINE_IMPL
++void vcos_reentrant_mutex_lock(VCOS_REENTRANT_MUTEX_T *m) {
++ vcos_mutex_lock(m);
++}
++
++VCOS_INLINE_IMPL
++void vcos_reentrant_mutex_unlock(VCOS_REENTRANT_MUTEX_T *m) {
++ vcos_mutex_unlock(m);
++}
++
++VCOS_INLINE_IMPL
++int vcos_reentrant_mutex_is_locked(VCOS_REENTRANT_MUTEX_T *m) {
++ return vcos_mutex_is_locked(m);
++}
++
++#endif
++
++#ifdef __cplusplus
++}
++#endif
++#endif
++
++
++
+--- /dev/null
++++ b/drivers/misc/vc04_services/interface/vcos/generic/vcos_thread_reaper.h
+@@ -0,0 +1,35 @@
++/*=============================================================================
++Copyright (c) 2010 Broadcom Europe Limited.
++All rights reserved.
++
++Project : vcfw
++Module : vcos
++
++FILE DESCRIPTION
++VideoCore OS Abstraction Layer - thread reaping
++=============================================================================*/
++
++#ifndef VCOS_THREAD_REAPER_H
++#define VCOS_THREAD_REAPER_H
++
++#define VCOS_HAVE_THREAD_REAPER
++
++/** Initialise the thread reaper.
++ */
++VCOS_STATUS_T vcos_thread_reaper_init(void);
++
++/** Reap a thread. Arranges for the thread to be automatically
++ * joined.
++ *
++ * @sa vcos_thread_join().
++ *
++ * @param thread the thread to terminate
++ * @param on_terminated called after the thread has exited
++ * @param cxt pass back to the callback
++ *
++ */
++void vcos_thread_reap(VCOS_THREAD_T *thread, void (*on_terminated)(void*), void *cxt);
++
++#endif
++
++
+--- /dev/null
++++ b/drivers/misc/vc04_services/interface/vcos/linuxkernel/stdint.h
+@@ -0,0 +1,17 @@
++/*=============================================================================
++Copyright (c) 2010 Broadcom Europe Limited.
++All rights reserved.
++
++FILE DESCRIPTION
++VideoCore OS fAbstraction Layer - stdint.h C standard header
++=============================================================================*/
++
++#ifndef _VCOS_PLATFORM_LINUX_STDINT_H
++#define _VCOS_PLATFORM_LINUX_STDINT_H
++
++/* The Linux kernel does not have a <stdint.h> so we have to provide one of
++ our own. */
++
++#include <linux/types.h> /* includes integer types */
++
++#endif /* _VCOS_PLATFORM_LINUX_STDINT_H */
+--- /dev/null
++++ b/drivers/misc/vc04_services/interface/vcos/linuxkernel/vcos_linuxkernel.c
+@@ -0,0 +1,616 @@
++/*=============================================================================
++Copyright (c) 2009 Broadcom Europe Limited.
++All rights reserved.
++
++Project : vcfw
++Module : vcos
++
++FILE DESCRIPTION
++VideoCore OS Abstraction Layer - pthreads types
++=============================================================================*/
++
++#define VCOS_INLINE_BODIES
++#include <linux/module.h>
++#include <linux/kernel.h>
++#include <linux/time.h>
++#include <linux/pid.h>
++#include <linux/mm.h>
++#include <linux/version.h>
++
++#if defined( CONFIG_BCM_KNLLOG_SUPPORT )
++#include <linux/broadcom/knllog.h>
++#endif
++#include "interface/vcos/vcos.h"
++#ifdef HAVE_VCOS_VERSION
++#include "interface/vcos/vcos_build_info.h"
++#endif
++
++VCOS_CFG_ENTRY_T vcos_cfg_dir;
++VCOS_CFG_ENTRY_T vcos_logging_cfg_dir;
++VCOS_CFG_ENTRY_T vcos_version_cfg;
++
++#ifndef VCOS_DEFAULT_STACK_SIZE
++#define VCOS_DEFAULT_STACK_SIZE 4096
++#endif
++
++static VCOS_THREAD_ATTR_T default_attrs = {
++ 0,
++ VCOS_DEFAULT_STACK_SIZE,
++};
++
++#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,36)
++static DEFINE_SEMAPHORE(lock);
++#else
++static DECLARE_MUTEX(lock);
++#endif
++
++typedef void (*LEGACY_ENTRY_FN_T)(int, void *);
++
++/** Wrapper function around the real thread function. Posts the semaphore
++ * when completed.
++ */
++static int vcos_thread_wrapper(void *arg)
++{
++ void *ret;
++ VCOS_THREAD_T *thread = arg;
++
++ vcos_assert(thread->magic == VCOS_THREAD_MAGIC);
++
++ thread->thread.thread = current;
++
++ vcos_add_thread(thread);
++
++#ifdef VCOS_WANT_TLS_EMULATION
++ vcos_tls_thread_register(&thread->_tls);
++#endif
++
++ if (thread->legacy)
++ {
++ LEGACY_ENTRY_FN_T fn = (LEGACY_ENTRY_FN_T)thread->entry;
++ fn(0,thread->arg);
++ ret = 0;
++ }
++ else
++ {
++ ret = thread->entry(thread->arg);
++ }
++
++ thread->exit_data = ret;
++
++ vcos_remove_thread(current);
++
++ /* For join and cleanup */
++ vcos_semaphore_post(&thread->wait);
++
++ return 0;
++}
++
++VCOS_STATUS_T vcos_thread_create(VCOS_THREAD_T *thread,
++ const char *name,
++ VCOS_THREAD_ATTR_T *attrs,
++ VCOS_THREAD_ENTRY_FN_T entry,
++ void *arg)
++{
++ VCOS_STATUS_T st;
++ struct task_struct *kthread;
++
++ memset(thread, 0, sizeof(*thread));
++ thread->magic = VCOS_THREAD_MAGIC;
++ strlcpy( thread->name, name, sizeof( thread->name ));
++ thread->legacy = attrs ? attrs->legacy : 0;
++ thread->entry = entry;
++ thread->arg = arg;
++
++ if (!name)
++ {
++ vcos_assert(0);
++ return VCOS_EINVAL;
++ }
++
++ st = vcos_semaphore_create(&thread->wait, NULL, 0);
++ if (st != VCOS_SUCCESS)
++ {
++ return st;
++ }
++
++ st = vcos_semaphore_create(&thread->suspend, NULL, 0);
++ if (st != VCOS_SUCCESS)
++ {
++ return st;
++ }
++
++ /*required for event groups */
++ vcos_timer_create(&thread->_timer.timer, thread->name, NULL, NULL);
++
++ kthread = kthread_create((int (*)(void *))vcos_thread_wrapper, (void*)thread, name);
++ vcos_assert(kthread != NULL);
++ set_user_nice(kthread, attrs->ta_priority);
++ thread->thread.thread = kthread;
++ wake_up_process(kthread);
++ return VCOS_SUCCESS;
++}
++
++void vcos_thread_join(VCOS_THREAD_T *thread,
++ void **pData)
++{
++ vcos_assert(thread);
++ vcos_assert(thread->magic == VCOS_THREAD_MAGIC);
++
++ thread->joined = 1;
++
++ vcos_semaphore_wait(&thread->wait);
++
++ if (pData)
++ {
++ *pData = thread->exit_data;
++ }
++
++ /* Clean up */
++ if (thread->stack)
++ vcos_free(thread->stack);
++
++ vcos_semaphore_delete(&thread->wait);
++ vcos_semaphore_delete(&thread->suspend);
++
++}
++
++uint32_t vcos_getmicrosecs( void )
++{
++ struct timeval tv;
++/*XXX FIX ME! switch to ktime_get_ts to use MONOTONIC clock */
++ do_gettimeofday(&tv);
++ return (tv.tv_sec*1000000) + tv.tv_usec;
++}
++
++VCOS_STATUS_T vcos_timer_init(void)
++{
++ return VCOS_SUCCESS;
++}
++
++static const char *log_prefix[] =
++{
++ "", /* VCOS_LOG_UNINITIALIZED */
++ "", /* VCOS_LOG_NEVER */
++ KERN_ERR, /* VCOS_LOG_ERROR */
++ KERN_WARNING, /* VCOS_LOG_WARN */
++ KERN_INFO, /* VCOS_LOG_INFO */
++ KERN_INFO /* VCOS_LOG_TRACE */
++};
++
++void vcos_vlog_default_impl(const VCOS_LOG_CAT_T *cat, VCOS_LOG_LEVEL_T _level, const char *fmt, va_list args)
++{
++ char *newline = strchr( fmt, '\n' );
++ const char *prefix;
++ const char *real_fmt;
++
++ preempt_disable();
++ {
++ if ( *fmt == '<' )
++ {
++ prefix = fmt;
++ real_fmt= &fmt[3];
++ }
++ else
++ {
++ prefix = log_prefix[_level];
++ real_fmt = fmt;
++ }
++#if defined( CONFIG_BCM_KNLLOG_SUPPORT )
++ knllog_ventry( "vcos", real_fmt, args );
++#endif
++ printk( "%.3svcos: [%d]: ", prefix, current->pid );
++ vprintk( real_fmt, args );
++
++ if ( newline == NULL )
++ {
++ printk("\n");
++ }
++ }
++ preempt_enable();
++}
++
++
++const char * _vcos_log_level(void)
++{
++ return NULL;
++}
++
++/*****************************************************************************
++*
++* Displays the version information in /proc/vcos/version
++*
++*****************************************************************************/
++
++#ifdef HAVE_VCOS_VERSION
++
++static void show_version( VCOS_CFG_BUF_T buf, void *data )
++{
++ static const char* copyright = "Copyright (c) 2011 Broadcom";
++
++ vcos_cfg_buf_printf( buf, "Built %s %s on %s\n%s\nversion %s\n",
++ vcos_get_build_date(),
++ vcos_get_build_time(),
++ vcos_get_build_hostname(),
++ copyright,
++ vcos_get_build_version() );
++}
++
++#endif
++
++/*****************************************************************************
++*
++* Initialises vcos
++*
++*****************************************************************************/
++
++VCOS_STATUS_T vcos_init(void)
++{
++ if ( vcos_cfg_mkdir( &vcos_cfg_dir, NULL, "vcos" ) != VCOS_SUCCESS )
++ {
++ printk( KERN_ERR "%s: Unable to create vcos cfg entry\n", __func__ );
++ }
++ vcos_logging_init();
++
++#ifdef HAVE_VCOS_VERSION
++ if ( vcos_cfg_create_entry( &vcos_version_cfg, &vcos_cfg_dir, "version",
++ show_version, NULL, NULL ) != VCOS_SUCCESS )
++ {
++ printk( KERN_ERR "%s: Unable to create vcos cfg entry 'version'\n", __func__ );
++ }
++#endif
++
++ return VCOS_SUCCESS;
++}
++
++/*****************************************************************************
++*
++* Deinitializes vcos
++*
++*****************************************************************************/
++
++void vcos_deinit(void)
++{
++#ifdef HAVE_VCOS_VERSION
++ vcos_cfg_remove_entry( &vcos_version_cfg );
++#endif
++ vcos_cfg_remove_entry( &vcos_cfg_dir );
++}
++
++void vcos_global_lock(void)
++{
++ down(&lock);
++}
++
++void vcos_global_unlock(void)
++{
++ up(&lock);
++}
++
++/* vcos_thread_exit() doesn't really stop this thread here
++ *
++ * At the moment, call to do_exit() will leak task_struct for
++ * current thread, so we let the vcos_thread_wrapper() do the
++ * cleanup and exit job, and we return w/o actually stopping the thread.
++ *
++ * ToDo: Kernel v2.6.31 onwards, it is considered safe to call do_exit()
++ * from kthread, the implementation of which is combined in 2 patches
++ * with commit-ids "63706172" and "cdd140bd" in oss Linux kernel tree
++ */
++
++void vcos_thread_exit(void *arg)
++{
++ VCOS_THREAD_T *thread = vcos_thread_current();
++
++ vcos_assert(thread);
++ vcos_assert(thread->magic == VCOS_THREAD_MAGIC);
++
++ thread->exit_data = arg;
++}
++
++void vcos_thread_attr_init(VCOS_THREAD_ATTR_T *attrs)
++{
++ *attrs = default_attrs;
++}
++
++void _vcos_task_timer_set(void (*pfn)(void *), void *cxt, VCOS_UNSIGNED ms)
++{
++ VCOS_THREAD_T *self = vcos_thread_current();
++ vcos_assert(self);
++ vcos_assert(self->_timer.pfn == NULL);
++
++ vcos_timer_create( &self->_timer.timer, "TaskTimer", pfn, cxt );
++ vcos_timer_set(&self->_timer.timer, ms);
++}
++
++void _vcos_task_timer_cancel(void)
++{
++ VCOS_THREAD_T *self = vcos_thread_current();
++ if (self->_timer.timer.linux_timer.function)
++ {
++ vcos_timer_cancel(&self->_timer.timer);
++ vcos_timer_delete(&self->_timer.timer);
++ }
++}
++
++int vcos_vsnprintf( char *buf, size_t buflen, const char *fmt, va_list ap )
++{
++ return vsnprintf( buf, buflen, fmt, ap );
++}
++
++int vcos_snprintf(char *buf, size_t buflen, const char *fmt, ...)
++{
++ int ret;
++ va_list ap;
++ va_start(ap,fmt);
++ ret = vsnprintf(buf, buflen, fmt, ap);
++ va_end(ap);
++ return ret;
++}
++
++int vcos_llthread_running(VCOS_LLTHREAD_T *t) {
++ vcos_assert(0); /* this function only exists as a nasty hack for the video codecs! */
++ return 1;
++}
++
++static int vcos_verify_bkpts = 1;
++
++int vcos_verify_bkpts_enabled(void)
++{
++ return vcos_verify_bkpts;
++}
++
++/*****************************************************************************
++*
++* _vcos_log_platform_init is called from vcos_logging_init
++*
++*****************************************************************************/
++
++void _vcos_log_platform_init(void)
++{
++ if ( vcos_cfg_mkdir( &vcos_logging_cfg_dir, &vcos_cfg_dir, "logging" ) != VCOS_SUCCESS )
++ {
++ printk( KERN_ERR "%s: Unable to create logging cfg entry\n", __func__ );
++ }
++}
++
++/*****************************************************************************
++*
++* Called to display the contents of a logging category.
++*
++*****************************************************************************/
++
++static void logging_show_category( VCOS_CFG_BUF_T buf, void *data )
++{
++ VCOS_LOG_CAT_T *category = data;
++
++ vcos_cfg_buf_printf( buf, "%s\n", vcos_log_level_to_string( category->level ));
++}
++
++/*****************************************************************************
++*
++* Called to parse content for a logging category.
++*
++*****************************************************************************/
++
++static void logging_parse_category( VCOS_CFG_BUF_T buf, void *data )
++{
++ VCOS_LOG_CAT_T *category = data;
++ const char *str = vcos_cfg_buf_get_str( buf );
++ VCOS_LOG_LEVEL_T level;
++
++ if ( vcos_string_to_log_level( str, &level ) == VCOS_SUCCESS )
++ {
++ category->level = level;
++ }
++ else
++ {
++ printk( KERN_ERR "%s: Unrecognized logging level: '%s'\n",
++ __func__, str );
++ }
++}
++
++/*****************************************************************************
++*
++* _vcos_log_platform_register is called from vcos_log_register whenever
++* a new category is registered.
++*
++*****************************************************************************/
++
++void _vcos_log_platform_register(VCOS_LOG_CAT_T *category)
++{
++ VCOS_CFG_ENTRY_T entry;
++
++ if ( vcos_cfg_create_entry( &entry, &vcos_logging_cfg_dir, category->name,
++ logging_show_category, logging_parse_category,
++ category ) != VCOS_SUCCESS )
++ {
++ printk( KERN_ERR "%s: Unable to create cfg entry for logging category '%s'\n",
++ __func__, category->name );
++ category->platform_data = NULL;
++ }
++ else
++ {
++ category->platform_data = entry;
++ }
++}
++
++/*****************************************************************************
++*
++* _vcos_log_platform_unregister is called from vcos_log_unregister whenever
++* a new category is unregistered.
++*
++*****************************************************************************/
++
++void _vcos_log_platform_unregister(VCOS_LOG_CAT_T *category)
++{
++ VCOS_CFG_ENTRY_T entry;
++
++ entry = category->platform_data;
++ if ( entry != NULL )
++ {
++ if ( vcos_cfg_remove_entry( &entry ) != VCOS_SUCCESS )
++ {
++ printk( KERN_ERR "%s: Unable to remove cfg entry for logging category '%s'\n",
++ __func__, category->name );
++ }
++ }
++}
++
++/*****************************************************************************
++*
++* Allocate memory.
++*
++*****************************************************************************/
++
++void *vcos_platform_malloc( VCOS_UNSIGNED required_size )
++{
++ if ( required_size >= ( 2 * PAGE_SIZE ))
++ {
++ /* For larger allocations, use vmalloc, whose underlying allocator
++ * returns pages
++ */
++
++ return vmalloc( required_size );
++ }
++
++ /* For smaller allocation, use kmalloc */
++
++ return kmalloc( required_size, GFP_KERNEL );
++}
++
++/*****************************************************************************
++*
++* Free previously allocated memory
++*
++*****************************************************************************/
++
++void vcos_platform_free( void *ptr )
++{
++ if (((unsigned long)ptr >= VMALLOC_START )
++ && ((unsigned long)ptr < VMALLOC_END ))
++ {
++ vfree( ptr );
++ }
++ else
++ {
++ kfree( ptr );
++ }
++}
++
++/*****************************************************************************
++*
++* Execute a routine exactly once.
++*
++*****************************************************************************/
++
++VCOS_STATUS_T vcos_once(VCOS_ONCE_T *once_control,
++ void (*init_routine)(void))
++{
++ /* In order to be thread-safe we need to re-test *once_control
++ * inside the lock. The outer test is basically an optimization
++ * so that once it is initialized we don't need to waste time
++ * trying to acquire the lock.
++ */
++
++ if ( *once_control == 0 )
++ {
++ vcos_global_lock();
++ if ( *once_control == 0 )
++ {
++ init_routine();
++ *once_control = 1;
++ }
++ vcos_global_unlock();
++ }
++
++ return VCOS_SUCCESS;
++}
++
++/*****************************************************************************
++*
++* String duplication routine.
++*
++*****************************************************************************/
++
++char *vcos_strdup(const char *str)
++{
++ return kstrdup(str, GFP_KERNEL);
++}
++
++
++/* Export functions for modules to use */
++EXPORT_SYMBOL( vcos_init );
++
++EXPORT_SYMBOL( vcos_semaphore_trywait );
++EXPORT_SYMBOL( vcos_semaphore_post );
++EXPORT_SYMBOL( vcos_semaphore_create );
++EXPORT_SYMBOL( vcos_semaphore_wait );
++EXPORT_SYMBOL( vcos_semaphore_delete );
++
++EXPORT_SYMBOL( vcos_log_impl );
++EXPORT_SYMBOL( vcos_vlog_impl );
++EXPORT_SYMBOL( vcos_vlog_default_impl );
++EXPORT_SYMBOL( vcos_log_get_default_category );
++EXPORT_SYMBOL( vcos_log_register );
++EXPORT_SYMBOL( vcos_log_unregister );
++EXPORT_SYMBOL( vcos_logging_init );
++EXPORT_SYMBOL( vcos_log_level_to_string );
++EXPORT_SYMBOL( vcos_string_to_log_level );
++EXPORT_SYMBOL( vcos_log_dump_mem_impl );
++
++EXPORT_SYMBOL( vcos_event_create );
++EXPORT_SYMBOL( vcos_event_delete );
++EXPORT_SYMBOL( vcos_event_flags_set );
++EXPORT_SYMBOL( vcos_event_signal );
++EXPORT_SYMBOL( vcos_event_wait );
++EXPORT_SYMBOL( vcos_event_try );
++
++EXPORT_SYMBOL( vcos_getmicrosecs );
++
++EXPORT_SYMBOL( vcos_strcasecmp );
++EXPORT_SYMBOL( vcos_snprintf );
++EXPORT_SYMBOL( vcos_vsnprintf );
++
++EXPORT_SYMBOL( vcos_thread_current );
++EXPORT_SYMBOL( vcos_thread_join );
++EXPORT_SYMBOL( vcos_thread_create );
++EXPORT_SYMBOL( vcos_thread_set_priority );
++EXPORT_SYMBOL( vcos_thread_exit );
++EXPORT_SYMBOL( vcos_once );
++
++EXPORT_SYMBOL( vcos_thread_attr_init );
++EXPORT_SYMBOL( vcos_thread_attr_setpriority );
++EXPORT_SYMBOL( vcos_thread_attr_settimeslice );
++EXPORT_SYMBOL( vcos_thread_attr_setstacksize );
++EXPORT_SYMBOL( _vcos_thread_attr_setlegacyapi );
++
++EXPORT_SYMBOL( vcos_event_flags_create );
++EXPORT_SYMBOL( vcos_event_flags_delete );
++EXPORT_SYMBOL( vcos_event_flags_get );
++
++EXPORT_SYMBOL( vcos_sleep );
++
++EXPORT_SYMBOL( vcos_calloc );
++EXPORT_SYMBOL( vcos_malloc );
++EXPORT_SYMBOL( vcos_malloc_aligned );
++EXPORT_SYMBOL( vcos_free );
++
++EXPORT_SYMBOL( vcos_mutex_create );
++EXPORT_SYMBOL( vcos_mutex_delete );
++EXPORT_SYMBOL( vcos_mutex_lock );
++EXPORT_SYMBOL( vcos_mutex_unlock );
++EXPORT_SYMBOL( vcos_mutex_trylock );
++
++EXPORT_SYMBOL( vcos_timer_cancel );
++EXPORT_SYMBOL( vcos_timer_create );
++EXPORT_SYMBOL( vcos_timer_delete );
++EXPORT_SYMBOL( vcos_timer_set );
++
++EXPORT_SYMBOL( vcos_atomic_flags_create );
++EXPORT_SYMBOL( vcos_atomic_flags_delete );
++EXPORT_SYMBOL( vcos_atomic_flags_or );
++EXPORT_SYMBOL( vcos_atomic_flags_get_and_clear );
++
++EXPORT_SYMBOL( vcos_verify_bkpts_enabled );
++
++EXPORT_SYMBOL( vcos_strdup );
+--- /dev/null
++++ b/drivers/misc/vc04_services/interface/vcos/linuxkernel/vcos_linuxkernel_cfg.c
+@@ -0,0 +1,332 @@
++/*****************************************************************************
++* Copyright 2009 - 2010 Broadcom Corporation. All rights reserved.
++*
++* Unless you and Broadcom execute a separate written software license
++* agreement governing use of this software, this software is licensed to you
++* under the terms of the GNU General Public License version 2, available at
++* http://www.broadcom.com/licenses/GPLv2.php (the "GPL").
++*
++* Notwithstanding the above, under no circumstances may you combine this
++* software in any way with any other Broadcom software provided under a
++* license other than the GPL, without Broadcom's express prior written
++* consent.
++*****************************************************************************/
++
++#include "interface/vcos/vcos.h"
++#include <linux/module.h>
++#include <linux/proc_fs.h>
++#include <linux/seq_file.h>
++#include <asm/uaccess.h>
++
++struct opaque_vcos_cfg_buf_t
++{
++ struct seq_file *seq;
++ char *charBuf;
++};
++
++struct opaque_vcos_cfg_entry_t
++{
++ struct proc_dir_entry *pde;
++ struct proc_dir_entry *parent_pde;
++ VCOS_CFG_SHOW_FPTR showFunc;
++ VCOS_CFG_PARSE_FPTR parseFunc;
++ void *data;
++ const char *name;
++};
++
++/*****************************************************************************
++*
++* cfg_proc_show
++*
++*****************************************************************************/
++
++static int cfg_proc_show( struct seq_file *s, void *v )
++{
++ VCOS_CFG_ENTRY_T entry;
++ struct opaque_vcos_cfg_buf_t buf;
++
++ entry = s->private;
++
++ if ( entry->showFunc )
++ {
++ memset( &buf, 0, sizeof( buf ));
++ buf.seq = s;
++
++ entry->showFunc( &buf, entry->data );
++ }
++
++ return 0;
++}
++
++/*****************************************************************************
++*
++* cfg_proc_write
++*
++*****************************************************************************/
++
++static ssize_t cfg_proc_write( struct file *file, const char __user *buffer, size_t count, loff_t *ppos)
++{
++ VCOS_CFG_ENTRY_T entry = PDE(file->f_path.dentry->d_inode)->data;
++ char *charBuf;
++ struct opaque_vcos_cfg_buf_t buf;
++ size_t len;
++
++ if ( entry->parseFunc != NULL )
++ {
++ /* The number 4000 is rather arbitrary. It just needs to be bigger than any input
++ * string we expect to use.
++ */
++
++ len = count;
++ if ( count > 4000 )
++ {
++ len = 4000;
++ }
++
++ /* Allocate a kernel buffer to contain the string being written. */
++
++ charBuf = kmalloc( len + 1, GFP_KERNEL );
++ if ( copy_from_user( charBuf, buffer, len ))
++ {
++ kfree( charBuf );
++ return -EFAULT;
++ }
++
++ /* echo puts a trailing newline in the buffer - strip it out. */
++
++ if (( len > 0 ) && ( charBuf[ len - 1 ] == '\n' ))
++ {
++ len--;
++ }
++ charBuf[len] = '\0';
++
++ memset( &buf, 0, sizeof( buf ));
++ buf.charBuf = charBuf;
++
++ entry->parseFunc( &buf, entry->data );
++ kfree( charBuf );
++ }
++ return count;
++}
++
++/*****************************************************************************
++*
++* cfg_proc_open
++*
++*****************************************************************************/
++
++static int cfg_proc_open( struct inode *inode, struct file *file )
++{
++ return single_open( file, cfg_proc_show, PDE(inode)->data );
++}
++
++static const struct file_operations cfg_proc_fops =
++{
++ .open = cfg_proc_open,
++ .read = seq_read,
++ .llseek = seq_lseek,
++ .release = single_release,
++ .write = cfg_proc_write,
++};
++
++/*****************************************************************************
++*
++* vcos_cfg_mkdir
++*
++*****************************************************************************/
++
++VCOS_STATUS_T vcos_cfg_mkdir( VCOS_CFG_ENTRY_T *entryp,
++ VCOS_CFG_ENTRY_T *parent,
++ const char *dirName )
++{
++ VCOS_CFG_ENTRY_T entry;
++
++ if (( entry = kzalloc( sizeof( *entry ), GFP_KERNEL )) == NULL )
++ {
++ return VCOS_ENOMEM;
++ }
++
++ if ( parent == NULL )
++ {
++ entry->pde = proc_mkdir( dirName, NULL );
++ }
++ else
++ {
++ entry->pde = proc_mkdir( dirName, (*parent)->pde );
++ entry->parent_pde = (*parent)->pde;
++ }
++ if ( entry->pde == NULL )
++ {
++ kfree( entry );
++ return VCOS_ENOMEM;
++ }
++
++ entry->name = dirName;
++
++ *entryp = entry;
++ return VCOS_SUCCESS;
++}
++
++/*****************************************************************************
++*
++* vcos_cfg_create_entry
++*
++*****************************************************************************/
++
++VCOS_STATUS_T vcos_cfg_create_entry( VCOS_CFG_ENTRY_T *entryp,
++ VCOS_CFG_ENTRY_T *parent,
++ const char *entryName,
++ VCOS_CFG_SHOW_FPTR showFunc,
++ VCOS_CFG_PARSE_FPTR parseFunc,
++ void *data )
++{
++ VCOS_CFG_ENTRY_T entry;
++ mode_t mode;
++
++ *entryp = NULL;
++
++ if (( entry = kzalloc( sizeof( *entry ), GFP_KERNEL )) == NULL )
++ {
++ return VCOS_ENOMEM;
++ }
++
++ mode = 0;
++ if ( showFunc != NULL )
++ {
++ mode |= 0444;
++ }
++ if ( parseFunc != NULL )
++ {
++ mode |= 0200;
++ }
++
++ if ( parent == NULL )
++ {
++ entry->pde = create_proc_entry( entryName, mode, NULL );
++ }
++ else
++ {
++ entry->pde = create_proc_entry( entryName, mode, (*parent)->pde );
++ entry->parent_pde = (*parent)->pde;
++ }
++ if ( entry->pde == NULL )
++ {
++ kfree( entry );
++ return -ENOMEM;
++ }
++ entry->showFunc = showFunc;
++ entry->parseFunc = parseFunc;
++ entry->data = data;
++ entry->name = entryName;
++
++ entry->pde->data = entry;
++ entry->pde->proc_fops = &cfg_proc_fops;
++
++ *entryp = entry;
++ return VCOS_SUCCESS;
++}
++
++/*****************************************************************************
++*
++* vcos_cfg_remove_entry
++*
++*****************************************************************************/
++
++VCOS_STATUS_T vcos_cfg_remove_entry( VCOS_CFG_ENTRY_T *entryp )
++{
++ if (( entryp != NULL ) && ( *entryp != NULL ))
++ {
++ remove_proc_entry( (*entryp)->name, (*entryp)->parent_pde );
++
++ kfree( *entryp );
++ *entryp = NULL;
++ }
++
++ return VCOS_SUCCESS;
++}
++
++/*****************************************************************************
++*
++* vcos_cfg_is_entry_created
++*
++*****************************************************************************/
++
++int vcos_cfg_is_entry_created( VCOS_CFG_ENTRY_T entry )
++{
++ return ( entry != NULL ) && ( entry->pde != NULL );
++}
++
++/*****************************************************************************
++*
++* vcos_cfg_buf_printf
++*
++*****************************************************************************/
++
++void vcos_cfg_buf_printf( VCOS_CFG_BUF_T buf, const char *fmt, ... )
++{
++ struct seq_file *m = buf->seq;
++
++ /* Bah - there is no seq_vprintf */
++
++ va_list args;
++ int len;
++
++ if (m->count < m->size) {
++ va_start(args, fmt);
++ len = vsnprintf(m->buf + m->count, m->size - m->count, fmt, args);
++ va_end(args);
++ if (m->count + len < m->size) {
++ m->count += len;
++ return;
++ }
++ }
++ m->count = m->size;
++}
++
++/*****************************************************************************
++*
++* vcos_cfg_buf_get_str
++*
++*****************************************************************************/
++
++char *vcos_cfg_buf_get_str( VCOS_CFG_BUF_T buf )
++{
++ return buf->charBuf;
++}
++
++/*****************************************************************************
++*
++* vcos_cfg_get_proc_entry
++*
++* This function is only created for a couple of backwards compatibility '
++* issues and shouldn't normally be used.
++*
++*****************************************************************************/
++
++void *vcos_cfg_get_proc_entry( VCOS_CFG_ENTRY_T entry )
++{
++ return entry->pde;
++}
++
++/*****************************************************************************
++*
++* vcos_cfg_get_entry_name
++*
++*****************************************************************************/
++
++const char *vcos_cfg_get_entry_name( VCOS_CFG_ENTRY_T entry )
++{
++ return entry->pde->name;
++}
++
++
++EXPORT_SYMBOL( vcos_cfg_mkdir );
++EXPORT_SYMBOL( vcos_cfg_create_entry );
++EXPORT_SYMBOL( vcos_cfg_remove_entry );
++EXPORT_SYMBOL( vcos_cfg_get_entry_name );
++EXPORT_SYMBOL( vcos_cfg_is_entry_created );
++EXPORT_SYMBOL( vcos_cfg_buf_printf );
++EXPORT_SYMBOL( vcos_cfg_buf_get_str );
++
++EXPORT_SYMBOL_GPL( vcos_cfg_get_proc_entry );
++
+--- /dev/null
++++ b/drivers/misc/vc04_services/interface/vcos/linuxkernel/vcos_linuxkernel_misc.c
+@@ -0,0 +1,113 @@
++// #############################################################################
++// START #######################################################################
++/*****************************************************************************
++* Copyright 2009 - 2010 Broadcom Corporation. All rights reserved.
++*
++* Unless you and Broadcom execute a separate written software license
++* agreement governing use of this software, this software is licensed to you
++* under the terms of the GNU General Public License version 2, available at
++* http://www.broadcom.com/licenses/GPLv2.php (the "GPL").
++*
++* Notwithstanding the above, under no circumstances may you combine this
++* software in any way with any other Broadcom software provided under a
++* license other than the GPL, without Broadcom's express prior written
++* consent.
++*****************************************************************************/
++
++#include "interface/vcos/vcos.h"
++#include <linux/sched.h>
++#include <linux/module.h>
++#include <linux/freezer.h>
++#include <linux/string.h>
++#include <linux/slab.h>
++
++/*****************************************************************************
++*
++* vcos_semaphore_wait_freezable
++*
++*****************************************************************************/
++
++VCOS_STATUS_T vcos_semaphore_wait_freezable(VCOS_SEMAPHORE_T *sem)
++{
++ int rval, sig_pended = 0;
++ unsigned long flags;
++ struct task_struct *task = current;
++
++ while (1) {
++ rval = down_interruptible((struct semaphore *)sem);
++ if (rval == 0) { /* down now */
++ break;
++ } else {
++ if (freezing(current)) {
++ try_to_freeze();
++ } else {
++ spin_lock_irqsave(&task->sighand->siglock, flags);
++ if (test_tsk_thread_flag(task, TIF_SIGPENDING)) {
++ clear_tsk_thread_flag(task, TIF_SIGPENDING);
++ sig_pended = 1;
++ }
++ spin_unlock_irqrestore(&task->sighand->siglock, flags);
++ }
++ }
++ }
++
++ if (sig_pended) {
++ spin_lock_irqsave(&task->sighand->siglock, flags);
++ set_tsk_thread_flag(task, TIF_SIGPENDING);
++ spin_unlock_irqrestore(&task->sighand->siglock, flags);
++ }
++
++ return 0;
++}
++
++EXPORT_SYMBOL( vcos_semaphore_wait_freezable );
++
++/*****************************************************************************
++*
++* vcos_kmalloc
++*
++* We really need to convert malloc to do kmalloc or vmalloc based on the
++* size, but for now we'll add a separate function.
++*
++*****************************************************************************/
++
++void *vcos_kmalloc(VCOS_UNSIGNED size, const char *description)
++{
++ (void)description;
++
++ return kmalloc( size, GFP_KERNEL );
++}
++
++/*****************************************************************************
++*
++* vcos_kmalloc
++*
++* We really need to convert malloc to do kmalloc or vmalloc based on the
++* size, but for now we'll add a separate function.
++*
++*****************************************************************************/
++
++void *vcos_kcalloc(VCOS_UNSIGNED num, VCOS_UNSIGNED size, const char *description)
++{
++ (void)description;
++
++ return kzalloc( num * size, GFP_KERNEL );
++}
++
++/*****************************************************************************
++*
++* vcos_kfree
++*
++*****************************************************************************/
++
++void vcos_kfree(void *ptr)
++{
++ kfree( ptr );
++}
++
++EXPORT_SYMBOL( vcos_kmalloc );
++EXPORT_SYMBOL( vcos_kcalloc );
++EXPORT_SYMBOL( vcos_kfree );
++
++// END #########################################################################
++// #############################################################################
+--- /dev/null
++++ b/drivers/misc/vc04_services/interface/vcos/linuxkernel/vcos_mod_init.c
+@@ -0,0 +1,64 @@
++/*****************************************************************************
++* Copyright 2006 - 2008 Broadcom Corporation. All rights reserved.
++*
++* Unless you and Broadcom execute a separate written software license
++* agreement governing use of this software, this software is licensed to you
++* under the terms of the GNU General Public License version 2, available at
++* http://www.broadcom.com/licenses/GPLv2.php (the "GPL").
++*
++* Notwithstanding the above, under no circumstances may you combine this
++* software in any way with any other Broadcom software provided under a
++* license other than the GPL, without Broadcom's express prior written
++* consent.
++****************************************************************************/
++
++/* ---- Include Files ---------------------------------------------------- */
++
++#include "interface/vcos/vcos.h"
++#include <linux/module.h>
++
++/* ---- Public Variables ------------------------------------------------- */
++
++/* ---- Private Constants and Types -------------------------------------- */
++
++/* ---- Private Variables ------------------------------------------------ */
++
++/* ---- Private Function Prototypes -------------------------------------- */
++
++/* ---- Functions -------------------------------------------------------- */
++
++/****************************************************************************
++*
++* Called to perform module initialization when the module is loaded
++*
++***************************************************************************/
++
++static int __init vcos_mod_init( void )
++{
++ printk( KERN_INFO "VCOS Module\n" );
++
++ vcos_init();
++ return 0;
++}
++
++/****************************************************************************
++*
++* Called to perform module cleanup when the module is unloaded.
++*
++***************************************************************************/
++
++static void __exit vcos_mod_exit( void )
++{
++ vcos_deinit();
++}
++
++/****************************************************************************/
++
++module_init( vcos_mod_init );
++module_exit( vcos_mod_exit );
++
++MODULE_AUTHOR("Broadcom");
++MODULE_DESCRIPTION( "VCOS Module Functions" );
++MODULE_LICENSE( "GPL" );
++MODULE_VERSION( "1.0" );
++
+--- /dev/null
++++ b/drivers/misc/vc04_services/interface/vcos/linuxkernel/vcos_platform.h
+@@ -0,0 +1,496 @@
++/*=============================================================================
++Copyright (c) 2009 Broadcom Europe Limited.
++All rights reserved.
++
++Project : vcfw
++Module : vcos
++
++FILE DESCRIPTION
++VideoCore OS Abstraction Layer - Linux kernel (partial) implementation.
++=============================================================================*/
++
++/* Do not include this file directly - instead include it via vcos.h */
++
++/** @file
++ *
++ * Linux kernel (partial) implementation of VCOS.
++ *
++ */
++
++#ifndef VCOS_PLATFORM_H
++#define VCOS_PLATFORM_H
++
++#include <linux/types.h>
++#include <linux/semaphore.h>
++#include <linux/mutex.h>
++#include <asm/bitops.h>
++#include <linux/kthread.h>
++#include <linux/wait.h>
++#include <linux/vmalloc.h>
++#include <linux/jiffies.h>
++#include <linux/delay.h>
++#include <linux/string.h>
++#include <linux/types.h>
++#include <linux/interrupt.h>
++#include <linux/random.h>
++#include <linux/sched.h>
++#include <linux/ctype.h>
++#include <linux/uaccess.h>
++#include <linux/time.h> /* for time_t */
++#include <linux/slab.h>
++#include <linux/vmalloc.h>
++
++#define VCOS_HAVE_RTOS 1
++#define VCOS_HAVE_SEMAPHORE 1
++#define VCOS_HAVE_EVENT 1
++#define VCOS_HAVE_QUEUE 0
++#define VCOS_HAVE_LEGACY_ISR 0
++#define VCOS_HAVE_TIMER 1
++#define VCOS_HAVE_CANCELLATION_SAFE_TIMER 0
++#define VCOS_HAVE_MEMPOOL 0
++#define VCOS_HAVE_ISR 0
++#define VCOS_HAVE_ATOMIC_FLAGS 1
++#define VCOS_HAVE_BLOCK_POOL 0
++#define VCOS_HAVE_ONCE 1
++#define VCOS_HAVE_FILE 0
++#define VCOS_HAVE_USER_BUF 0
++#define VCOS_HAVE_CFG 1
++#define VCOS_HAVE_SPINLOCK 0
++#define VCOS_HAVE_CMD 1
++#define VCOS_HAVE_EVENT_FLAGS 1
++
++/* Exclude many VCOS classes which don't have predicates */
++#define VCOS_TLS_H
++#define VCOS_NAMED_MUTEX_H
++#define VCOS_REENTRANT_MUTEX_H
++#define VCOS_NAMED_SEMAPHORE_H
++#define VCOS_QUICKSLOW_MUTEX_H
++/*#define VCOS_INIT_H */
++/*#define VCOS_MEM_H */
++/*#define VCOS_STRING_H */
++
++typedef struct semaphore VCOS_SEMAPHORE_T;
++typedef struct semaphore VCOS_EVENT_T;
++typedef struct mutex VCOS_MUTEX_T;
++typedef volatile int VCOS_ONCE_T;
++
++typedef unsigned int VCOS_UNSIGNED;
++typedef unsigned int VCOS_OPTION;
++typedef atomic_t VCOS_ATOMIC_FLAGS_T;
++
++typedef struct
++{
++ struct timer_list linux_timer;
++ void *context;
++ void (*expiration_routine)(void *context);
++
++} VCOS_TIMER_T;
++
++typedef struct VCOS_LLTHREAD_T
++{
++ struct task_struct *thread; /**< The thread itself */
++ VCOS_SEMAPHORE_T suspend; /**< For support event groups and similar - a per thread semaphore */
++} VCOS_LLTHREAD_T;
++
++typedef enum
++{
++ VCOS_O_RDONLY = 00000000,
++ VCOS_O_WRONLY = 00000001,
++ VCOS_O_RDWR = 00000002,
++ VCOS_O_TRUNC = 00001000,
++} VCOS_FILE_FLAGS_T;
++
++typedef struct file *VCOS_FILE_T;
++
++#define VCOS_SUSPEND -1
++#define VCOS_NO_SUSPEND 0
++
++#define VCOS_START 1
++#define VCOS_NO_START 0
++
++#define VCOS_THREAD_PRI_MIN -20
++#define VCOS_THREAD_PRI_MAX 19
++
++#define VCOS_THREAD_PRI_INCREASE -1
++#define VCOS_THREAD_PRI_HIGHEST VCOS_THREAD_PRI_MIN
++#define VCOS_THREAD_PRI_LOWEST VCOS_THREAD_PRI_MAX
++#define VCOS_THREAD_PRI_NORMAL ((VCOS_THREAD_PRI_MAX+VCOS_THREAD_PRI_MIN)/2)
++#define VCOS_THREAD_PRI_ABOVE_NORMAL (VCOS_THREAD_PRI_NORMAL + VCOS_THREAD_PRI_INCREASE)
++#define VCOS_THREAD_PRI_REALTIME VCOS_THREAD_PRI_HIGHEST
++
++#define _VCOS_AFFINITY_DEFAULT 0
++#define _VCOS_AFFINITY_CPU0 0
++#define _VCOS_AFFINITY_CPU1 0
++#define _VCOS_AFFINITY_MASK 0
++#define VCOS_CAN_SET_STACK_ADDR 0
++
++#define VCOS_TICKS_PER_SECOND HZ
++
++#include "interface/vcos/generic/vcos_generic_event_flags.h"
++#include "interface/vcos/generic/vcos_mem_from_malloc.h"
++#include "interface/vcos/generic/vcos_joinable_thread_from_plain.h"
++
++/***********************************************************
++ *
++ * Memory allcoation
++ *
++ ***********************************************************/
++
++#define _vcos_platform_malloc vcos_platform_malloc
++#define _vcos_platform_free vcos_platform_free
++
++void *vcos_platform_malloc( VCOS_UNSIGNED required_size );
++void vcos_platform_free( void *ptr );
++
++#if defined(VCOS_INLINE_BODIES)
++
++#undef VCOS_ASSERT_LOGGING_DISABLE
++#define VCOS_ASSERT_LOGGING_DISABLE 1
++
++/***********************************************************
++ *
++ * Counted Semaphores
++ *
++ ***********************************************************/
++
++VCOS_INLINE_IMPL
++VCOS_STATUS_T vcos_semaphore_wait(VCOS_SEMAPHORE_T *sem) {
++ int ret = down_interruptible(sem);
++ if ( ret == 0 )
++ /* Success */
++ return VCOS_SUCCESS;
++ else if ( ret == -EINTR )
++ /* Interrupted */
++ return VCOS_EINTR;
++ else
++ /* Default (timeout) */
++ return VCOS_EAGAIN;
++}
++
++VCOS_INLINE_IMPL
++VCOS_STATUS_T vcos_semaphore_trywait(VCOS_SEMAPHORE_T *sem) {
++ if (down_trylock(sem) != 0)
++ return VCOS_EAGAIN;
++ return VCOS_SUCCESS;
++}
++
++VCOS_INLINE_IMPL
++VCOS_STATUS_T vcos_semaphore_create(VCOS_SEMAPHORE_T *sem,
++ const char *name,
++ VCOS_UNSIGNED initial_count) {
++ sema_init(sem, initial_count);
++ return VCOS_SUCCESS;
++}
++
++VCOS_INLINE_IMPL
++void vcos_semaphore_delete(VCOS_SEMAPHORE_T *sem) {
++}
++
++VCOS_INLINE_IMPL
++VCOS_STATUS_T vcos_semaphore_post(VCOS_SEMAPHORE_T *sem) {
++ up(sem);
++ return VCOS_SUCCESS;
++}
++
++/***********************************************************
++ *
++ * Threads
++ *
++ ***********************************************************/
++
++#include "vcos_thread_map.h"
++
++VCOS_INLINE_IMPL
++VCOS_LLTHREAD_T *vcos_llthread_current(void) {
++ return &vcos_kthread_current()->thread;
++}
++
++VCOS_INLINE_IMPL
++void vcos_llthread_resume(VCOS_LLTHREAD_T *thread) {
++ vcos_assert(0);
++}
++
++VCOS_INLINE_IMPL
++void vcos_sleep(uint32_t ms) {
++ msleep(ms);
++}
++
++VCOS_INLINE_IMPL
++void vcos_thread_set_priority(VCOS_THREAD_T *thread, VCOS_UNSIGNED p) {
++ /* not implemented */
++}
++VCOS_INLINE_IMPL
++VCOS_UNSIGNED vcos_thread_get_priority(VCOS_THREAD_T *thread) {
++ /* not implemented */
++ return 0;
++}
++
++/***********************************************************
++ *
++ * Miscellaneous
++ *
++ ***********************************************************/
++
++VCOS_INLINE_IMPL
++int vcos_strcasecmp(const char *s1, const char *s2) {
++ return strcasecmp(s1,s2);
++}
++
++
++/***********************************************************
++ *
++ * Mutexes
++ *
++ ***********************************************************/
++
++VCOS_INLINE_IMPL
++VCOS_STATUS_T vcos_mutex_create(VCOS_MUTEX_T *m, const char *name) {
++ mutex_init(m);
++ return VCOS_SUCCESS;
++}
++
++VCOS_INLINE_IMPL
++void vcos_mutex_delete(VCOS_MUTEX_T *m) {
++}
++
++VCOS_INLINE_IMPL
++VCOS_STATUS_T vcos_mutex_lock(VCOS_MUTEX_T *m) {
++ int ret = mutex_lock_interruptible(m);
++ if ( ret == 0 )
++ /* Success */
++ return VCOS_SUCCESS;
++ else if ( ret == -EINTR )
++ /* Interrupted */
++ return VCOS_EINTR;
++ else
++ /* Default */
++ return VCOS_EAGAIN;
++}
++
++VCOS_INLINE_IMPL
++void vcos_mutex_unlock(VCOS_MUTEX_T *m) {
++ mutex_unlock(m);
++}
++
++VCOS_INLINE_IMPL
++int vcos_mutex_is_locked(VCOS_MUTEX_T *m) {
++ if (mutex_trylock(m) != 0)
++ return 1; /* it was locked */
++ mutex_unlock(m);
++ /* it wasn't locked */
++ return 0;
++}
++
++VCOS_INLINE_IMPL
++VCOS_STATUS_T vcos_mutex_trylock(VCOS_MUTEX_T *m) {
++ if (mutex_trylock(m) == 0)
++ return VCOS_SUCCESS;
++ else
++ return VCOS_EAGAIN;
++}
++
++/* For supporting event groups - per thread semaphore */
++VCOS_INLINE_IMPL
++void _vcos_thread_sem_wait(void) {
++ VCOS_THREAD_T *t = vcos_thread_current();
++ vcos_semaphore_wait(&t->suspend);
++}
++
++VCOS_INLINE_IMPL
++void _vcos_thread_sem_post(VCOS_THREAD_T *target) {
++ vcos_semaphore_post(&target->suspend);
++}
++
++/***********************************************************
++ *
++ * Events
++ *
++ ***********************************************************/
++
++VCOS_INLINE_IMPL
++VCOS_STATUS_T vcos_event_create(VCOS_EVENT_T *event, const char *debug_name)
++{
++ sema_init(event, 0);
++ return VCOS_SUCCESS;
++}
++
++VCOS_INLINE_IMPL
++void vcos_event_signal(VCOS_EVENT_T *event)
++{
++ up(event);
++}
++
++VCOS_INLINE_IMPL
++VCOS_STATUS_T vcos_event_wait(VCOS_EVENT_T *event)
++{
++ int ret = down_interruptible(event);
++ if ( ret == -EINTR )
++ /* Interrupted */
++ return VCOS_EINTR;
++ else if (ret != 0)
++ /* Default (timeout) */
++ return VCOS_EAGAIN;
++ /* Emulate a maximum count of 1 by removing any extra upness */
++ while (down_trylock(event) == 0) continue;
++ return VCOS_SUCCESS;
++}
++
++VCOS_INLINE_DECL
++VCOS_STATUS_T vcos_event_try(VCOS_EVENT_T *event)
++{
++ return (down_trylock(event) == 0) ? VCOS_SUCCESS : VCOS_EAGAIN;
++}
++
++VCOS_INLINE_IMPL
++void vcos_event_delete(VCOS_EVENT_T *event)
++{
++}
++
++/***********************************************************
++ *
++ * Timers
++ *
++ ***********************************************************/
++
++VCOS_INLINE_DECL
++void vcos_timer_linux_func(unsigned long data)
++{
++ VCOS_TIMER_T *vcos_timer = (VCOS_TIMER_T *)data;
++
++ vcos_timer->expiration_routine( vcos_timer->context );
++}
++
++VCOS_INLINE_DECL
++VCOS_STATUS_T vcos_timer_create(VCOS_TIMER_T *timer,
++ const char *name,
++ void (*expiration_routine)(void *context),
++ void *context) {
++ init_timer(&timer->linux_timer);
++ timer->linux_timer.data = (unsigned long)timer;
++ timer->linux_timer.function = vcos_timer_linux_func;
++
++ timer->context = context;
++ timer->expiration_routine = expiration_routine;
++
++ return VCOS_SUCCESS;
++}
++
++VCOS_INLINE_IMPL
++void vcos_timer_set(VCOS_TIMER_T *timer, VCOS_UNSIGNED delay_ms) {
++ timer->linux_timer.expires = jiffies + msecs_to_jiffies(delay_ms);
++ add_timer(&timer->linux_timer);
++}
++
++VCOS_INLINE_IMPL
++void vcos_timer_cancel(VCOS_TIMER_T *timer) {
++ del_timer(&timer->linux_timer);
++}
++
++VCOS_INLINE_IMPL
++void vcos_timer_reset(VCOS_TIMER_T *timer, VCOS_UNSIGNED delay_ms) {
++ del_timer_sync(&timer->linux_timer);
++ timer->linux_timer.expires = jiffies + msecs_to_jiffies(delay_ms);
++ add_timer(&timer->linux_timer);
++}
++
++VCOS_INLINE_IMPL
++void vcos_timer_delete(VCOS_TIMER_T *timer) {
++ timer->context = NULL;
++ timer->expiration_routine = NULL;
++ timer->linux_timer.function = NULL;
++ timer->linux_timer.data = 0;
++ return;
++}
++
++VCOS_INLINE_IMPL
++VCOS_UNSIGNED vcos_process_id_current(void) {
++ return (VCOS_UNSIGNED)current->pid;
++}
++
++
++VCOS_INLINE_IMPL
++int vcos_in_interrupt(void) {
++ return in_interrupt();
++}
++
++/***********************************************************
++ *
++ * Atomic flags
++ *
++ ***********************************************************/
++
++VCOS_INLINE_IMPL
++VCOS_STATUS_T vcos_atomic_flags_create(VCOS_ATOMIC_FLAGS_T *atomic_flags)
++{
++ atomic_set(atomic_flags, 0);
++ return VCOS_SUCCESS;
++}
++
++VCOS_INLINE_IMPL
++void vcos_atomic_flags_or(VCOS_ATOMIC_FLAGS_T *atomic_flags, uint32_t flags)
++{
++ uint32_t value;
++ do {
++ value = atomic_read(atomic_flags);
++ } while (atomic_cmpxchg(atomic_flags, value, value | flags) != value);
++}
++
++VCOS_INLINE_IMPL
++uint32_t vcos_atomic_flags_get_and_clear(VCOS_ATOMIC_FLAGS_T *atomic_flags)
++{
++ return atomic_xchg(atomic_flags, 0);
++}
++
++VCOS_INLINE_IMPL
++void vcos_atomic_flags_delete(VCOS_ATOMIC_FLAGS_T *atomic_flags)
++{
++}
++
++#undef VCOS_ASSERT_LOGGING_DISABLE
++#define VCOS_ASSERT_LOGGING_DISABLE 0
++
++#endif /* VCOS_INLINE_BODIES */
++
++VCOS_INLINE_DECL void _vcos_thread_sem_wait(void);
++VCOS_INLINE_DECL void _vcos_thread_sem_post(VCOS_THREAD_T *);
++
++/***********************************************************
++ *
++ * Misc
++ *
++ ***********************************************************/
++VCOS_INLINE_DECL char *vcos_strdup(const char *str);
++
++/***********************************************************
++ *
++ * Logging
++ *
++ ***********************************************************/
++
++VCOSPRE_ const char * VCOSPOST_ _vcos_log_level(void);
++#define _VCOS_LOG_LEVEL() _vcos_log_level()
++
++#define vcos_log_platform_init() _vcos_log_platform_init()
++#define vcos_log_platform_register(category) _vcos_log_platform_register(category)
++#define vcos_log_platform_unregister(category) _vcos_log_platform_unregister(category)
++
++struct VCOS_LOG_CAT_T; /* Forward declaration since vcos_logging.h hasn't been included yet */
++
++void _vcos_log_platform_init(void);
++void _vcos_log_platform_register(struct VCOS_LOG_CAT_T *category);
++void _vcos_log_platform_unregister(struct VCOS_LOG_CAT_T *category);
++
++/***********************************************************
++ *
++ * Memory barriers
++ *
++ ***********************************************************/
++
++#define vcos_wmb(x) wmb()
++#define vcos_rmb() rmb()
++
++#include "interface/vcos/generic/vcos_common.h"
++/*#include "interface/vcos/generic/vcos_generic_quickslow_mutex.h" */
++
++#endif /* VCOS_PLATFORM_H */
++
+--- /dev/null
++++ b/drivers/misc/vc04_services/interface/vcos/linuxkernel/vcos_platform_types.h
+@@ -0,0 +1,47 @@
++/*=============================================================================
++Copyright (c) 2009 Broadcom Europe Limited.
++All rights reserved.
++
++Project : vcfw
++Module : osal
++
++FILE DESCRIPTION
++VideoCore OS Abstraction Layer - platform-specific types and defines
++=============================================================================*/
++
++#ifndef VCOS_PLATFORM_TYPES_H
++#define VCOS_PLATFORM_TYPES_H
++
++#include <stddef.h>
++#include <linux/types.h>
++#include <linux/bug.h>
++
++#define VCOSPRE_ extern
++#define VCOSPOST_
++
++#if defined(__GNUC__) && (( __GNUC__ > 2 ) || (( __GNUC__ == 2 ) && ( __GNUC_MINOR__ >= 3 )))
++#define VCOS_FORMAT_ATTR_(ARCHETYPE, STRING_INDEX, FIRST_TO_CHECK) __attribute__ ((format (ARCHETYPE, STRING_INDEX, FIRST_TO_CHECK)))
++#else
++#define VCOS_FORMAT_ATTR_(ARCHETYPE, STRING_INDEX, FIRST_TO_CHECK)
++#endif
++
++#if !defined( __STDC_VERSION__ )
++#define __STDC_VERSION__ 199901L
++#endif
++
++#if !defined( __STDC_VERSION )
++#define __STDC_VERSION __STDC_VERSION__
++#endif
++
++static inline void __vcos_bkpt( void ) { BUG(); }
++#define VCOS_BKPT __vcos_bkpt()
++
++#define VCOS_ASSERT_MSG(...) printk( KERN_ERR "vcos_assert: " __VA_ARGS__ )
++
++#define PRId64 "lld"
++#define PRIi64 "lli"
++#define PRIo64 "llo"
++#define PRIu64 "llu"
++#define PRIx64 "llx"
++
++#endif
+--- /dev/null
++++ b/drivers/misc/vc04_services/interface/vcos/linuxkernel/vcos_thread_map.c
+@@ -0,0 +1,129 @@
++/*****************************************************************************
++* Copyright 2009 - 2010 Broadcom Corporation. All rights reserved.
++*
++* Unless you and Broadcom execute a separate written software license
++* agreement governing use of this software, this software is licensed to you
++* under the terms of the GNU General Public License version 2, available at
++* http://www.broadcom.com/licenses/GPLv2.php (the "GPL").
++*
++* Notwithstanding the above, under no circumstances may you combine this
++* software in any way with any other Broadcom software provided under a
++* license other than the GPL, without Broadcom's express prior written
++* consent.
++*****************************************************************************/
++
++/** Support to allow VCOS thread-related functions to be called from
++ * threads that were not created by VCOS.
++ */
++
++#include <linux/semaphore.h>
++#include <linux/vmalloc.h>
++#include <linux/list.h>
++#include <linux/sched.h>
++
++#include "vcos_thread_map.h"
++#include "interface/vcos/vcos_logging.h"
++
++/*
++ * Store the vcos_thread pointer at the end of
++ * current kthread stack, right after the thread_info
++ * structure.
++ *
++ * I belive we should be safe here to steal these 4 bytes
++ * from the stack, as long as the vcos thread does not use up
++ * all the stack available
++ *
++ * NOTE: This scheme will not work on architectures with stack growing up
++ */
++
++/* Shout, if we are not being compiled for ARM kernel */
++
++#ifndef CONFIG_ARM
++#error " **** The vcos kthread implementation may not work for non-ARM kernel ****"
++#endif
++
++static inline void *to_current_vcos_thread(void)
++{
++ unsigned long *vcos_data;
++
++ vcos_data = (unsigned long *)((char *)current_thread_info() + sizeof(struct thread_info));
++
++ return (void *)vcos_data;
++}
++
++
++static inline void *to_vcos_thread(struct task_struct *tsk)
++{
++ unsigned long *vcos_data;
++
++ vcos_data = (unsigned long *)((char *)tsk->stack + sizeof(struct thread_info));
++
++ return (void *)vcos_data;
++}
++
++/**
++ @fn uint32_t vcos_add_thread(THREAD_MAP_T *vcos_thread);
++*/
++uint32_t vcos_add_thread(VCOS_THREAD_T *vcos_thread)
++{
++ VCOS_THREAD_T **vcos_thread_storage = (VCOS_THREAD_T **)to_current_vcos_thread();
++
++ *vcos_thread_storage = vcos_thread;
++
++ return(0);
++}
++
++
++/**
++ @fn uint32_t vcos_remove_thread(struct task_struct * thread_id);
++*/
++uint32_t vcos_remove_thread(struct task_struct *thread_id)
++{
++ /* Remove thread_id -> VCOS_THREAD_T relationship */
++ VCOS_THREAD_T **vcos_thread_storage;
++
++ /*
++ * We want to be able to build vcos as a loadable module, which
++ * means that we can't call get_task_struct. So we assert if we're
++ * ever called with thread_id != current.
++ */
++
++ BUG_ON( thread_id != current );
++
++ vcos_thread_storage = (VCOS_THREAD_T **)to_vcos_thread(thread_id);
++
++ *(unsigned long *)vcos_thread_storage = 0xCAFEBABE;
++
++ return(0);
++}
++
++
++VCOS_THREAD_T *vcos_kthread_current(void)
++{
++ VCOS_THREAD_T **vcos_thread_storage = (VCOS_THREAD_T **)to_current_vcos_thread();
++
++ /* If we find this, either the thread is already dead or stack pages of a
++ * dead vcos thread are re-allocated to this one.
++ *
++ * Since there's no way to differentiate between these 2 cases, we just dump
++ * the current task name to the log.
++ *
++ * If the current thread is created using VCOS API, you should *never* see this
++ * print.
++ *
++ * If its a non-VCOS thread, just let it go ...
++ *
++ * To debug VCOS, uncomment printk's under the "if" condition below
++ *
++ */
++ if (*vcos_thread_storage == (void *)0xCAFEBABE)
++ {
++ #if 0
++ printk(KERN_DEBUG"****************************************************\n");
++ printk(KERN_DEBUG"%s : You have a problem, if \"%s\" is a VCOS thread\n",__func__, current->comm);
++ printk(KERN_DEBUG"****************************************************\n");
++ #endif
++ }
++
++ return *vcos_thread_storage;
++}
+--- /dev/null
++++ b/drivers/misc/vc04_services/interface/vcos/linuxkernel/vcos_thread_map.h
+@@ -0,0 +1,39 @@
++/*****************************************************************************
++* Copyright 2009 - 2010 Broadcom Corporation. All rights reserved.
++*
++* Unless you and Broadcom execute a separate written software license
++* agreement governing use of this software, this software is licensed to you
++* under the terms of the GNU General Public License version 2, available at
++* http://www.broadcom.com/licenses/GPLv2.php (the "GPL").
++*
++* Notwithstanding the above, under no circumstances may you combine this
++* software in any way with any other Broadcom software provided under a
++* license other than the GPL, without Broadcom's express prior written
++* consent.
++*****************************************************************************/
++
++
++#ifndef VCOS_THREAD_MAP_H
++#define VCOS_THREAD_MAP_H
++
++#include <linux/string.h>
++
++#include "vcos_platform.h"
++
++static inline void vcos_thread_map_init(void)
++{
++ return;
++}
++
++static inline void vcos_thread_map_cleanup(void)
++{
++ return;
++}
++
++uint32_t vcos_add_thread(VCOS_THREAD_T *vcos_thread);
++
++uint32_t vcos_remove_thread(struct task_struct *thread_id);
++
++VCOS_THREAD_T *vcos_kthread_current(void);
++
++#endif /*VCOS_THREAD_MAP_H */
+--- /dev/null
++++ b/drivers/misc/vc04_services/interface/vcos/vcos.h
+@@ -0,0 +1,201 @@
++/*=============================================================================
++Copyright (c) 2009 Broadcom Europe Limited.
++All rights reserved.
++
++Project : vcfw
++Module : chip driver
++
++FILE DESCRIPTION
++VideoCore OS Abstraction Layer - public header file
++=============================================================================*/
++
++/**
++ * \mainpage OS Abstraction Layer
++ *
++ * \section intro Introduction
++ *
++ * This abstraction layer is here to allow the underlying OS to be easily changed (e.g. from
++ * Nucleus to ThreadX) and to aid in porting host applications to new targets.
++ *
++ * \subsection error Error handling
++ *
++ * Wherever possible, VCOS functions assert internally and return void. The only exceptions
++ * are creation functions (which might fail due to lack of resources) and functions that
++ * might timeout or fail due to lack of space. Errors that might be reported by the underlying
++ * OS API (e.g. invalid mutex) are treated as a programming error, and are merely asserted on.
++ *
++ * \section thread_synch Threads and synchronisation
++ *
++ * \subsection thread Threads
++ *
++ * The thread API is somewhat different to that found in Nucleus. In particular, threads
++ * cannot just be destroyed at arbitrary times and nor can they merely exit. This is so
++ * that the same API can be implemented across all interesting platforms without too much
++ * difficulty. See vcos_thread.h for details. Thread attributes are configured via
++ * the VCOS_THREAD_ATTR_T structure, found in vcos_thread_attr.h.
++ *
++ * \subsection sema Semaphores
++ *
++ * Counted semaphores (c.f. Nucleus NU_SEMAPHORE) are created with VCOS_SEMAPHORE_T.
++ * Under ThreadX on VideoCore, semaphores are implemented using VideoCore spinlocks, and
++ * so are quite a lot faster than ordinary ThreadX semaphores. See vcos_semaphore.h.
++ *
++ * \subsection mtx Mutexes
++ *
++ * Mutexes are used for locking. Attempts to take a mutex twice, or to unlock it
++ * in a different thread to the one in which it was locked should be expected to fail.
++ * Mutexes are not re-entrant (see vcos_reentrant_mutex.h for a slightly slower
++ * re-entrant mutex).
++ *
++ * \subsection evflags Event flags
++ *
++ * Event flags (the ThreadX name - also known as event groups under Nucleus) provide
++ * 32 flags which can be waited on by multiple clients, and signalled by multiple clients.
++ * A timeout can be specified. See vcos_event_flags.h. An alternative to this is the
++ * VCOS_EVENT_T (see vcos_event.h) which is akin to the Win32 auto-reset event, or a
++ * saturating counted semaphore.
++ *
++ * \subsection event Events
++ *
++ * A VCOS_EVENT_T is a bit like a saturating semaphore. No matter how many times it
++ * is signalled, the waiter will only wake up once. See vcos_event.h. You might think this
++ * is useful if you suspect that the cost of reading the semaphore count (perhaps via a
++ * system call) is expensive on your platform.
++ *
++ * \subsection tls Thread local storage
++ *
++ * Thread local storage is supported using vcos_tls.h. This is emulated on Nucleus
++ * and ThreadX.
++ *
++ * \section int Interrupts
++ *
++ * The legacy LISR/HISR scheme found in Nucleus is supported via the legacy ISR API,
++ * which is also supported on ThreadX. New code should avoid this, and old code should
++ * be migrated away from it, since it is slow. See vcos_legacy_isr.h.
++ *
++ * Registering an interrupt handler, and disabling/restoring interrupts, is handled
++ * using the functions in vcos_isr.h.
++ *
++ */
++
++/**
++ * \file vcos.h
++ *
++ * This is the top level header file. Clients include this. It pulls in the platform-specific
++ * header file (vcos_platform.h) together with header files defining the expected APIs, such
++ * as vcos_mutex.h, vcos_semaphore.h, etc. It is also possible to include these header files
++ * directly.
++ *
++ */
++
++#ifndef VCOS_H
++#define VCOS_H
++
++#include "interface/vcos/vcos_assert.h"
++#include "vcos_types.h"
++#include "vcos_platform.h"
++
++#ifndef VCOS_INIT_H
++#include "interface/vcos/vcos_init.h"
++#endif
++
++#ifndef VCOS_SEMAPHORE_H
++#include "interface/vcos/vcos_semaphore.h"
++#endif
++
++#ifndef VCOS_THREAD_H
++#include "interface/vcos/vcos_thread.h"
++#endif
++
++#ifndef VCOS_MUTEX_H
++#include "interface/vcos/vcos_mutex.h"
++#endif
++
++#ifndef VCOS_MEM_H
++#include "interface/vcos/vcos_mem.h"
++#endif
++
++#ifndef VCOS_LOGGING_H
++#include "interface/vcos/vcos_logging.h"
++#endif
++
++#ifndef VCOS_STRING_H
++#include "interface/vcos/vcos_string.h"
++#endif
++
++#ifndef VCOS_EVENT_H
++#include "interface/vcos/vcos_event.h"
++#endif
++
++#ifndef VCOS_THREAD_ATTR_H
++#include "interface/vcos/vcos_thread_attr.h"
++#endif
++
++#ifndef VCOS_TLS_H
++#include "interface/vcos/vcos_tls.h"
++#endif
++
++#ifndef VCOS_REENTRANT_MUTEX_H
++#include "interface/vcos/vcos_reentrant_mutex.h"
++#endif
++
++#ifndef VCOS_NAMED_SEMAPHORE_H
++#include "interface/vcos/vcos_named_semaphore.h"
++#endif
++
++#ifndef VCOS_QUICKSLOW_MUTEX_H
++#include "interface/vcos/vcos_quickslow_mutex.h"
++#endif
++
++/* Headers with predicates */
++
++#if VCOS_HAVE_EVENT_FLAGS
++#include "interface/vcos/vcos_event_flags.h"
++#endif
++
++#if VCOS_HAVE_QUEUE
++#include "interface/vcos/vcos_queue.h"
++#endif
++
++#if VCOS_HAVE_LEGACY_ISR
++#include "interface/vcos/vcos_legacy_isr.h"
++#endif
++
++#if VCOS_HAVE_TIMER
++#include "interface/vcos/vcos_timer.h"
++#endif
++
++#if VCOS_HAVE_MEMPOOL
++#include "interface/vcos/vcos_mempool.h"
++#endif
++
++#if VCOS_HAVE_ISR
++#include "interface/vcos/vcos_isr.h"
++#endif
++
++#if VCOS_HAVE_ATOMIC_FLAGS
++#include "interface/vcos/vcos_atomic_flags.h"
++#endif
++
++#if VCOS_HAVE_ONCE
++#include "interface/vcos/vcos_once.h"
++#endif
++
++#if VCOS_HAVE_BLOCK_POOL
++#include "interface/vcos/vcos_blockpool.h"
++#endif
++
++#if VCOS_HAVE_FILE
++#include "interface/vcos/vcos_file.h"
++#endif
++
++#if VCOS_HAVE_CFG
++#include "interface/vcos/vcos_cfg.h"
++#endif
++
++#if VCOS_HAVE_CMD
++#include "interface/vcos/vcos_cmd.h"
++#endif
++
++#endif /* VCOS_H */
++
+--- /dev/null
++++ b/drivers/misc/vc04_services/interface/vcos/vcos_assert.h
+@@ -0,0 +1,269 @@
++/*=============================================================================
++Copyright (c) 2009 Broadcom Europe Limited.
++All rights reserved.
++
++Project : vcfw
++Module : osal
++
++FILE DESCRIPTION
++VideoCore OS Abstraction Layer - Assertion and error-handling macros.
++=============================================================================*/
++
++
++#ifndef VCOS_ASSERT_H
++#define VCOS_ASSERT_H
++
++/*
++ * Macro:
++ * vcos_assert(cond)
++ * vcos_assert_msg(cond, fmt, ...)
++ * Use:
++ * Detecting programming errors by ensuring that assumptions are correct.
++ * On failure:
++ * Performs a platform-dependent "breakpoint", usually with an assert-style
++ * message. The '_msg' variant expects a printf-style format string and
++ * parameters.
++ * If a failure is detected, the code should be fixed and rebuilt.
++ * In release builds:
++ * Generates no code, i.e. does not evaluate 'cond'.
++ * Returns:
++ * Nothing.
++ *
++ * Macro:
++ * vcos_demand(cond)
++ * vcos_demand_msg(cond, fmt, ...)
++ * Use:
++ * Detecting fatal system errors that require a reboot.
++ * On failure:
++ * Performs a platform-dependent "breakpoint", usually with an assert-style
++ * message, then calls vcos_abort (see below).
++ * In release builds:
++ * Calls vcos_abort() if 'cond' is false.
++ * Returns:
++ * Nothing (never, on failure).
++ *
++ * Macro:
++ * vcos_verify(cond)
++ * vcos_verify_msg(cond, fmt, ...)
++ * Use:
++ * Detecting run-time errors and interesting conditions, normally within an
++ * 'if' statement to catch the failures, i.e.
++ * if (!vcos_verify(cond)) handle_error();
++ * On failure:
++ * Generates a message and optionally stops at a platform-dependent
++ * "breakpoint" (usually disabled). See vcos_verify_bkpts_enable below.
++ * In release builds:
++ * Just evaluates and returns 'cond'.
++ * Returns:
++ * Non-zero if 'cond' is true, otherwise zero.
++ *
++ * Macro:
++ * vcos_static_assert(cond)
++ * Use:
++ * Detecting compile-time errors.
++ * On failure:
++ * Generates a compiler error.
++ * In release builds:
++ * Generates a compiler error.
++ *
++ * Function:
++ * void vcos_abort(void)
++ * Use:
++ * Invokes the fatal error handling mechanism, alerting the host where
++ * applicable.
++ * Returns:
++ * Never.
++ *
++ * Macro:
++ * VCOS_VERIFY_BKPTS
++ * Use:
++ * Define in a module (before including vcos.h) to specify an alternative
++ * flag to control breakpoints on vcos_verify() failures.
++ * Returns:
++ * Non-zero values enable breakpoints.
++ *
++ * Function:
++ * int vcos_verify_bkpts_enable(int enable);
++ * Use:
++ * Sets the global flag controlling breakpoints on vcos_verify failures,
++ * enabling the breakpoints iff 'enable' is non-zero.
++ * Returns:
++ * The previous state of the flag.
++ *
++ * Function:
++ * int vcos_verify_bkpts_enabled(void);
++ * Use:
++ * Queries the state of the global flag enabling breakpoints on vcos_verify
++ * failures.
++ * Returns:
++ * The current state of the flag.
++ *
++ * Examples:
++ *
++ * int my_breakpoint_enable_flag = 1;
++ *
++ * #define VCOS_VERIFY_BKPTS my_breakpoint_enable_flag
++ *
++ * #include "interface/vcos/vcos.h"
++ *
++ * vcos_static_assert((sizeof(object) % 32) == 0);
++ *
++ * // ...
++ *
++ * vcos_assert_msg(postcondition_is_true, "Coding error");
++ *
++ * if (!vcos_verify_msg(buf, "Buffer allocation failed (%d bytes)", size))
++ * {
++ * // Tidy up
++ * // ...
++ * return OUT_OF_MEMORY;
++ * }
++ *
++ * vcos_demand(*p++==GUARDWORDHEAP);
++ */
++
++#ifdef __cplusplus
++extern "C" {
++#endif
++
++#include "interface/vcos/vcos_types.h"
++
++#ifdef __COVERITY__
++#undef VCOS_ASSERT_BKPT
++#define VCOS_ASSERT_BKPT __coverity_panic__()
++#endif
++
++#ifndef VCOS_VERIFY_BKPTS
++#define VCOS_VERIFY_BKPTS vcos_verify_bkpts_enabled()
++#endif
++
++#ifndef VCOS_BKPT
++#if defined(__VIDEOCORE__) && !defined(VCOS_ASSERT_NO_BKPTS)
++#define VCOS_BKPT _bkpt()
++#else
++#define VCOS_BKPT (void )0
++#endif
++#endif
++
++#ifndef VCOS_ASSERT_BKPT
++#define VCOS_ASSERT_BKPT VCOS_BKPT
++#endif
++
++#ifndef VCOS_VERIFY_BKPT
++#define VCOS_VERIFY_BKPT (VCOS_VERIFY_BKPTS ? VCOS_BKPT : (void)0)
++#endif
++
++VCOSPRE_ int VCOSPOST_ vcos_verify_bkpts_enabled(void);
++VCOSPRE_ int VCOSPOST_ vcos_verify_bkpts_enable(int enable);
++VCOSPRE_ void VCOSPOST_ vcos_abort(void);
++
++#ifndef VCOS_ASSERT_MSG
++#ifdef LOGGING
++extern void logging_assert(const char *file, const char *func, int line, const char *format, ...);
++#define VCOS_ASSERT_MSG(...) ((VCOS_ASSERT_LOGGING && !VCOS_ASSERT_LOGGING_DISABLE) ? logging_assert(__FILE__, __func__, __LINE__, __VA_ARGS__) : (void)0)
++#else
++#define VCOS_ASSERT_MSG(...) ((void)0)
++#endif
++#endif
++
++#ifndef VCOS_VERIFY_MSG
++#define VCOS_VERIFY_MSG(...) VCOS_ASSERT_MSG(__VA_ARGS__)
++#endif
++
++#ifndef VCOS_ASSERT_LOGGING
++#define VCOS_ASSERT_LOGGING 0
++#endif
++
++#ifndef VCOS_ASSERT_LOGGING_DISABLE
++#define VCOS_ASSERT_LOGGING_DISABLE 0
++#endif
++
++#if !defined(NDEBUG) || defined(VCOS_RELEASE_ASSERTS)
++
++#ifndef vcos_assert
++#define vcos_assert(cond) \
++ ( (cond) ? (void)0 : (VCOS_ASSERT_MSG("%s", #cond), VCOS_ASSERT_BKPT) )
++#endif
++
++#ifndef vcos_assert_msg
++#define vcos_assert_msg(cond, ...) \
++ ( (cond) ? (void)0 : (VCOS_ASSERT_MSG(__VA_ARGS__), VCOS_ASSERT_BKPT) )
++#endif
++
++#else /* !defined(NDEBUG) || defined(VCOS_RELEASE_ASSERTS) */
++
++#ifndef vcos_assert
++#define vcos_assert(cond) (void)0
++#endif
++
++#ifndef vcos_assert_msg
++#define vcos_assert_msg(cond, ...) (void)0
++#endif
++
++#endif /* !defined(NDEBUG) || defined(VCOS_RELEASE_ASSERTS) */
++
++#if !defined(NDEBUG)
++
++#ifndef vcos_demand
++#define vcos_demand(cond) \
++ ( (cond) ? (void)0 : (VCOS_ASSERT_MSG("%s", #cond), VCOS_ASSERT_BKPT, vcos_abort()) )
++#endif
++
++#ifndef vcos_demand_msg
++#define vcos_demand_msg(cond, ...) \
++ ( (cond) ? (void)0 : (VCOS_ASSERT_MSG(__VA_ARGS__), VCOS_ASSERT_BKPT, vcos_abort()) )
++#endif
++
++#ifndef vcos_verify
++#define vcos_verify(cond) \
++ ( (cond) ? 1 : (VCOS_VERIFY_MSG("%s", #cond), VCOS_VERIFY_BKPT, 0) )
++#endif
++
++#ifndef vcos_verify_msg
++#define vcos_verify_msg(cond, ...) \
++ ( (cond) ? 1 : (VCOS_VERIFY_MSG(__VA_ARGS__), VCOS_VERIFY_BKPT, 0) )
++#endif
++
++#else /* !defined(NDEBUG) */
++
++#ifndef vcos_demand
++#define vcos_demand(cond) \
++ ( (cond) ? (void)0 : vcos_abort() )
++#endif
++
++#ifndef vcos_demand_msg
++#define vcos_demand_msg(cond, ...) \
++ ( (cond) ? (void)0 : vcos_abort() )
++#endif
++
++#ifndef vcos_verify
++#define vcos_verify(cond) (cond)
++#endif
++
++#ifndef vcos_verify_msg
++#define vcos_verify_msg(cond, ...) (cond)
++#endif
++
++#endif /* !defined(NDEBUG) */
++
++#ifndef vcos_static_assert
++#if defined(__GNUC__)
++#define vcos_static_assert(cond) __attribute__((unused)) extern int vcos_static_assert[(cond)?1:-1]
++#else
++#define vcos_static_assert(cond) extern int vcos_static_assert[(cond)?1:-1]
++#endif
++#endif
++
++#ifndef vc_assert
++#define vc_assert(cond) vcos_assert(cond)
++#endif
++
++/** Print out a backtrace, on supported platforms.
++ */
++extern void vcos_backtrace_self(void);
++
++#ifdef __cplusplus
++}
++#endif
++
++#endif /* VCOS_ASSERT_H */
+--- /dev/null
++++ b/drivers/misc/vc04_services/interface/vcos/vcos_atomic_flags.h
+@@ -0,0 +1,72 @@
++/*=============================================================================
++Copyright (c) 2009 Broadcom Europe Limited.
++All rights reserved.
++
++Project : vcfw
++Module : chip driver (just for consistency with the rest of vcos ;)
++
++FILE DESCRIPTION
++VideoCore OS Abstraction Layer - public header file
++=============================================================================*/
++
++#ifndef VCOS_ATOMIC_FLAGS_H
++#define VCOS_ATOMIC_FLAGS_H
++
++#ifdef __cplusplus
++extern "C" {
++#endif
++
++#include "interface/vcos/vcos_types.h"
++#include "vcos_platform.h"
++
++/**
++ * \file vcos_atomic_flags.h
++ *
++ * Defines atomic flags API.
++ *
++ * 32 flags. Atomic "or" and "get and clear" operations
++ */
++
++/**
++ * Create an atomic flags instance.
++ *
++ * @param atomic_flags Pointer to atomic flags instance, filled in on return
++ *
++ * @return VCOS_SUCCESS if succeeded.
++ */
++VCOS_INLINE_DECL
++VCOS_STATUS_T vcos_atomic_flags_create(VCOS_ATOMIC_FLAGS_T *atomic_flags);
++
++/**
++ * Atomically set the specified flags.
++ *
++ * @param atomic_flags Instance to set flags on
++ * @param flags Mask of flags to set
++ */
++VCOS_INLINE_DECL
++void vcos_atomic_flags_or(VCOS_ATOMIC_FLAGS_T *atomic_flags, uint32_t flags);
++
++/**
++ * Retrieve the current flags and then clear them. The entire operation is
++ * atomic.
++ *
++ * @param atomic_flags Instance to get/clear flags from/on
++ *
++ * @return Mask of flags which were set (and we cleared)
++ */
++VCOS_INLINE_DECL
++uint32_t vcos_atomic_flags_get_and_clear(VCOS_ATOMIC_FLAGS_T *atomic_flags);
++
++/**
++ * Delete an atomic flags instance.
++ *
++ * @param atomic_flags Instance to delete
++ */
++VCOS_INLINE_DECL
++void vcos_atomic_flags_delete(VCOS_ATOMIC_FLAGS_T *atomic_flags);
++
++#ifdef __cplusplus
++}
++#endif
++
++#endif
+--- /dev/null
++++ b/drivers/misc/vc04_services/interface/vcos/vcos_build_info.h
+@@ -0,0 +1,5 @@
++const char *vcos_get_build_hostname( void );
++const char *vcos_get_build_version( void );
++const char *vcos_get_build_time( void );
++const char *vcos_get_build_date( void );
++
+--- /dev/null
++++ b/drivers/misc/vc04_services/interface/vcos/vcos_cfg.h
+@@ -0,0 +1,113 @@
++/*****************************************************************************
++* Copyright 2009 - 2011 Broadcom Corporation. All rights reserved.
++*
++* Unless you and Broadcom execute a separate written software license
++* agreement governing use of this software, this software is licensed to you
++* under the terms of the GNU General Public License version 2, available at
++* http://www.broadcom.com/licenses/GPLv2.php (the "GPL").
++*
++* Notwithstanding the above, under no circumstances may you combine this
++* software in any way with any other Broadcom software provided under a
++* license other than the GPL, without Broadcom's express prior written
++* consent.
++*****************************************************************************/
++
++#if !defined( VCOS_CFG_H )
++#define VCOS_CFG_H
++
++#ifdef __cplusplus
++extern "C" {
++#endif
++
++#include "interface/vcos/vcos_types.h"
++#include "vcos_platform.h"
++
++typedef struct opaque_vcos_cfg_buf_t *VCOS_CFG_BUF_T;
++typedef struct opaque_vcos_cfg_entry_t *VCOS_CFG_ENTRY_T;
++
++/** \file vcos_file.h
++ *
++ * API for accessing configuration/statistics information. This
++ * is loosely modelled on the linux proc entries.
++ */
++
++typedef void (*VCOS_CFG_SHOW_FPTR)( VCOS_CFG_BUF_T buf, void *data );
++typedef void (*VCOS_CFG_PARSE_FPTR)( VCOS_CFG_BUF_T buf, void *data );
++
++/** Create a configuration directory.
++ *
++ * @param entry Place to store the created config entry.
++ * @param parent Parent entry (for directory like config
++ * options).
++ * @param entryName Name of the directory.
++ */
++
++VCOS_STATUS_T vcos_cfg_mkdir( VCOS_CFG_ENTRY_T *entry,
++ VCOS_CFG_ENTRY_T *parent,
++ const char *dirName );
++
++/** Create a configuration entry.
++ *
++ * @param entry Place to store the created config entry.
++ * @param parent Parent entry (for directory like config
++ * options).
++ * @param entryName Name of the configuration entry.
++ * @param showFunc Function pointer to show configuration
++ * data.
++ * @param parseFunc Function pointer to parse new data.
++ */
++
++VCOS_STATUS_T vcos_cfg_create_entry( VCOS_CFG_ENTRY_T *entry,
++ VCOS_CFG_ENTRY_T *parent,
++ const char *entryName,
++ VCOS_CFG_SHOW_FPTR showFunc,
++ VCOS_CFG_PARSE_FPTR parseFunc,
++ void *data );
++
++/** Determines if a configuration entry has been created or not.
++ *
++ * @param entry Configuration entry to query.
++ */
++
++int vcos_cfg_is_entry_created( VCOS_CFG_ENTRY_T entry );
++
++/** Returns the name of a configuration entry.
++ *
++ * @param entry Configuration entry to query.
++ */
++
++const char *vcos_cfg_get_entry_name( VCOS_CFG_ENTRY_T entry );
++
++/** Removes a configuration entry.
++ *
++ * @param entry Configuration entry to remove.
++ */
++
++VCOS_STATUS_T vcos_cfg_remove_entry( VCOS_CFG_ENTRY_T *entry );
++
++
++/** Writes data into a configuration buffer. Only valid inside
++ * the show function.
++ *
++ * @param buf Buffer to write data into.
++ * @param fmt printf style format string.
++ */
++
++void vcos_cfg_buf_printf( VCOS_CFG_BUF_T buf, const char *fmt, ... );
++
++/** Retrieves a null terminated string of the data associated
++ * with the buffer. Only valid inside the parse function.
++ *
++ * @param buf Buffer to get data from.
++ * @param fmt printf style format string.
++ */
++
++char *vcos_cfg_buf_get_str( VCOS_CFG_BUF_T buf );
++
++void *vcos_cfg_get_proc_entry( VCOS_CFG_ENTRY_T entry );
++
++#ifdef __cplusplus
++}
++#endif
++#endif
++
+--- /dev/null
++++ b/drivers/misc/vc04_services/interface/vcos/vcos_cmd.h
+@@ -0,0 +1,98 @@
++/*****************************************************************************
++* Copyright 2009 - 2011 Broadcom Corporation. All rights reserved.
++*
++* Unless you and Broadcom execute a separate written software license
++* agreement governing use of this software, this software is licensed to you
++* under the terms of the GNU General Public License version 2, available at
++* http://www.broadcom.com/licenses/GPLv2.php (the "GPL").
++*
++* Notwithstanding the above, under no circumstances may you combine this
++* software in any way with any other Broadcom software provided under a
++* license other than the GPL, without Broadcom's express prior written
++* consent.
++*****************************************************************************/
++
++#if !defined( VCOS_CMD_H )
++#define VCOS_CMD_H
++
++/* ---- Include Files ----------------------------------------------------- */
++
++#include "interface/vcos/vcos.h"
++#include "interface/vcos/vcos_stdint.h"
++
++
++/* ---- Constants and Types ---------------------------------------------- */
++
++struct VCOS_CMD_S;
++typedef struct VCOS_CMD_S VCOS_CMD_T;
++
++typedef struct
++{
++ int argc; /* Number of arguments (includes the command/sub-command) */
++ char **argv; /* Array of arguments */
++ char **argv_orig; /* Original array of arguments */
++
++ VCOS_CMD_T *cmd_entry;
++ VCOS_CMD_T *cmd_parent_entry;
++
++ int use_log; /* Output being logged? */
++ size_t result_size; /* Size of result buffer. */
++ char *result_ptr; /* Next place to put output. */
++ char *result_buf; /* Start of the buffer. */
++
++} VCOS_CMD_PARAM_T;
++
++typedef VCOS_STATUS_T (*VCOS_CMD_FUNC_T)( VCOS_CMD_PARAM_T *param );
++
++struct VCOS_CMD_S
++{
++ const char *name;
++ const char *args;
++ VCOS_CMD_FUNC_T cmd_fn;
++ VCOS_CMD_T *sub_cmd_entry;
++ const char *descr;
++
++};
++
++/* ---- Variable Externs ------------------------------------------------- */
++
++/* ---- Function Prototypes ---------------------------------------------- */
++
++/*
++ * Common printing routine for generating command output.
++ */
++VCOSPRE_ void VCOSPOST_ vcos_cmd_error( VCOS_CMD_PARAM_T *param, const char *fmt, ... ) VCOS_FORMAT_ATTR_(printf, 2, 3);
++VCOSPRE_ void VCOSPOST_ vcos_cmd_printf( VCOS_CMD_PARAM_T *param, const char *fmt, ... ) VCOS_FORMAT_ATTR_(printf, 2, 3);
++VCOSPRE_ void VCOSPOST_ vcos_cmd_vprintf( VCOS_CMD_PARAM_T *param, const char *fmt, va_list args ) VCOS_FORMAT_ATTR_(printf, 2, 0);
++
++/*
++ * Cause vcos_cmd_error, printf and vprintf to always log to the provided
++ * category. When this call is made, the results buffer passed into
++ * vcos_cmd_execute is used as a line buffer and does not need to be
++ * output by the caller.
++ */
++VCOSPRE_ void VCOSPOST_ vcos_cmd_always_log_output( VCOS_LOG_CAT_T *log_category );
++
++/*
++ * Prints command usage for the current command.
++ */
++VCOSPRE_ void VCOSPOST_ vcos_cmd_usage( VCOS_CMD_PARAM_T *param );
++
++/*
++ * Register commands to be processed
++ */
++VCOSPRE_ VCOS_STATUS_T VCOSPOST_ vcos_cmd_register( VCOS_CMD_T *cmd_entry );
++
++/*
++ * Registers multiple commands to be processed. The array should
++ * be terminated by an entry with all zeros.
++ */
++VCOSPRE_ VCOS_STATUS_T VCOSPOST_ vcos_cmd_register_multiple( VCOS_CMD_T *cmd_entry );
++
++/*
++ * Executes a command based on a command line.
++ */
++VCOSPRE_ VCOS_STATUS_T VCOSPOST_ vcos_cmd_execute( int argc, char **argv, size_t result_size, char *result_buf );
++
++#endif /* VCOS_CMD_H */
++
+--- /dev/null
++++ b/drivers/misc/vc04_services/interface/vcos/vcos_ctype.h
+@@ -0,0 +1,29 @@
++/*=============================================================================
++Copyright (c) 2009 Broadcom Europe Limited.
++All rights reserved.
++
++Project : vcfw
++Module : chip driver
++
++FILE DESCRIPTION
++VideoCore OS Abstraction Layer - public header file
++=============================================================================*/
++
++#ifndef VCOS_CTYPE_H
++#define VCOS_CTYPE_H
++
++/**
++ * \file
++ *
++ * ctype functions.
++ *
++ */
++
++#ifdef __KERNEL__
++#include <linux/ctype.h>
++#else
++#include <ctype.h>
++#endif
++
++#endif
++
+--- /dev/null
++++ b/drivers/misc/vc04_services/interface/vcos/vcos_dlfcn.h
+@@ -0,0 +1,69 @@
++/*=============================================================================
++Copyright (c) 2010 Broadcom Europe Limited.
++All rights reserved.
++
++Project : vcfw
++Module : chip driver
++
++FILE DESCRIPTION
++VCOS - abstraction over dynamic library opening
++=============================================================================*/
++
++#ifndef VCOS_DLFCN_H
++#define VCOS_DLFCN_H
++
++#include "interface/vcos/vcos_types.h"
++#include "vcos_platform.h"
++
++#ifdef __cplusplus
++extern "C" {
++#endif
++
++#define VCOS_DL_LAZY 1
++#define VCOS_DL_NOW 2
++
++/**
++ * \file
++ *
++ * Loading dynamic libraries. See also dlfcn.h.
++ */
++
++/** Open a dynamic library.
++ *
++ * @param name name of the library
++ * @param mode Load lazily or immediately (VCOS_DL_LAZY, VCOS_DL_NOW).
++ *
++ * @return A handle for use in subsequent calls.
++ */
++VCOSPRE_ void * VCOSPOST_ vcos_dlopen(const char *name, int mode);
++
++/** Look up a symbol.
++ *
++ * @param handle Handle to open
++ * @param name Name of function
++ *
++ * @return Function pointer, or NULL.
++ */
++VCOSPRE_ void VCOSPOST_ (*vcos_dlsym(void *handle, const char *name))(void);
++
++/** Close a library
++ *
++ * @param handle Handle to close
++ */
++VCOSPRE_ int VCOSPOST_ vcos_dlclose (void *handle);
++
++/** Return error message from library.
++ *
++ * @param err On return, set to non-zero if an error has occurred
++ * @param buf Buffer to write error to
++ * @param len Size of buffer (including terminating NUL).
++ */
++VCOSPRE_ int VCOSPOST_ vcos_dlerror(int *err, char *buf, size_t buflen);
++
++
++#ifdef __cplusplus
++}
++#endif
++#endif
++
++
+--- /dev/null
++++ b/drivers/misc/vc04_services/interface/vcos/vcos_event.h
+@@ -0,0 +1,97 @@
++/*=============================================================================
++Copyright (c) 2009 Broadcom Europe Limited.
++All rights reserved.
++
++Project : vcfw
++Module : chip driver
++
++FILE DESCRIPTION
++VideoCore OS Abstraction Layer - public header file for events
++=============================================================================*/
++
++#ifndef VCOS_EVENT_H
++#define VCOS_EVENT_H
++
++#ifdef __cplusplus
++extern "C" {
++#endif
++
++#include "interface/vcos/vcos_types.h"
++#include "vcos_platform.h"
++
++/**
++ * \file
++ *
++ * An event is akin to the Win32 auto-reset event.
++ *
++ *
++ * Signalling an event will wake up one waiting thread only. Once one
++ * thread has been woken the event atomically returns to the unsignalled
++ * state.
++ *
++ * If no threads are waiting on the event when it is signalled it remains
++ * signalled.
++ *
++ * This is almost, but not quite, completely unlike the "event flags"
++ * object based on Nucleus event groups and ThreadX event flags.
++ *
++ * In particular, it should be similar in speed to a semaphore, unlike
++ * the event flags.
++ */
++
++/**
++ * Create an event instance.
++ *
++ * @param event Filled in with constructed event.
++ * @param name Name of the event (for debugging)
++ *
++ * @return VCOS_SUCCESS on success, or error code.
++ */
++VCOS_INLINE_DECL
++VCOS_STATUS_T vcos_event_create(VCOS_EVENT_T *event, const char *name);
++
++#ifndef vcos_event_signal
++
++/**
++ * Signal the event. The event will return to being unsignalled
++ * after exactly one waiting thread has been woken up. If no
++ * threads are waiting it remains signalled.
++ *
++ * @param event The event to signal
++ */
++VCOS_INLINE_DECL
++void vcos_event_signal(VCOS_EVENT_T *event);
++
++/**
++ * Wait for the event.
++ *
++ * @param event The event to wait for
++ * @return VCOS_SUCCESS on success, VCOS_EAGAIN if the wait was interrupted.
++ */
++VCOS_INLINE_DECL
++VCOS_STATUS_T vcos_event_wait(VCOS_EVENT_T *event);
++
++/**
++ * Try event, but don't block.
++ *
++ * @param event The event to try
++ * @return VCOS_SUCCESS on success, VCOS_EAGAIN if the event is not currently signalled
++ */
++VCOS_INLINE_DECL
++VCOS_STATUS_T vcos_event_try(VCOS_EVENT_T *event);
++
++#endif
++
++/*
++ * Destroy an event.
++ */
++VCOS_INLINE_DECL
++void vcos_event_delete(VCOS_EVENT_T *event);
++
++#ifdef __cplusplus
++}
++#endif
++
++#endif
++
++
+--- /dev/null
++++ b/drivers/misc/vc04_services/interface/vcos/vcos_event_flags.h
+@@ -0,0 +1,98 @@
++/*=============================================================================
++Copyright (c) 2009 Broadcom Europe Limited.
++All rights reserved.
++
++Project : vcfw
++Module : chip driver
++
++FILE DESCRIPTION
++VideoCore OS Abstraction Layer - public header file
++=============================================================================*/
++
++#ifndef VCOS_EVENT_FLAGS_H
++#define VCOS_EVENT_FLAGS_H
++
++
++#ifdef __cplusplus
++extern "C" {
++#endif
++
++#include "interface/vcos/vcos_types.h"
++#include "vcos_platform.h"
++
++#define VCOS_EVENT_FLAGS_SUSPEND VCOS_SUSPEND
++#define VCOS_EVENT_FLAGS_NO_SUSPEND VCOS_NO_SUSPEND
++typedef VCOS_OPTION VCOS_EVENTGROUP_OPERATION_T;
++
++/**
++ * \file vcos_event_flags.h
++ *
++ * Defines event flags API.
++ *
++ * Similar to Nucleus event groups.
++ *
++ * These have the same semantics as Nucleus event groups and ThreadX event
++ * flags. As such, they are quite complex internally; if speed is important
++ * they might not be your best choice.
++ *
++ */
++
++/**
++ * Create an event flags instance.
++ *
++ * @param flags Pointer to event flags instance, filled in on return.
++ * @param name Name for the event flags, used for debug.
++ *
++ * @return VCOS_SUCCESS if succeeded.
++ */
++
++VCOS_INLINE_DECL
++VCOS_STATUS_T vcos_event_flags_create(VCOS_EVENT_FLAGS_T *flags, const char *name);
++
++/**
++ * Set some events.
++ *
++ * @param flags Instance to set flags on
++ * @param events Bitmask of the flags to actually set
++ * @param op How the flags should be set. VCOS_OR will OR in the flags; VCOS_AND
++ * will AND them in, possibly clearing existing flags.
++ */
++VCOS_INLINE_DECL
++void vcos_event_flags_set(VCOS_EVENT_FLAGS_T *flags,
++ VCOS_UNSIGNED events,
++ VCOS_OPTION op);
++
++/**
++ * Retrieve some events.
++ *
++ * Waits until the specified events have been set.
++ *
++ * @param flags Instance to wait on
++ * @param requested_events The bitmask to wait for
++ * @param op VCOS_OR - get any; VCOS_AND - get all.
++ * @param ms_suspend How long to wait, in milliseconds
++ * @param retrieved_events the events actually retrieved.
++ *
++ * @return VCOS_SUCCESS if events were retrieved. VCOS_EAGAIN if the
++ * timeout expired.
++ */
++VCOS_INLINE_DECL
++VCOS_STATUS_T vcos_event_flags_get(VCOS_EVENT_FLAGS_T *flags,
++ VCOS_UNSIGNED requested_events,
++ VCOS_OPTION op,
++ VCOS_UNSIGNED ms_suspend,
++ VCOS_UNSIGNED *retrieved_events);
++
++
++/**
++ * Delete an event flags instance.
++ */
++VCOS_INLINE_DECL
++void vcos_event_flags_delete(VCOS_EVENT_FLAGS_T *);
++
++#ifdef __cplusplus
++}
++#endif
++
++#endif
++
+--- /dev/null
++++ b/drivers/misc/vc04_services/interface/vcos/vcos_init.h
+@@ -0,0 +1,43 @@
++/*=============================================================================
++Copyright (c) 2009 Broadcom Europe Limited.
++All rights reserved.
++
++Project : vcfw
++Module : chip driver
++
++FILE DESCRIPTION
++VideoCore OS Abstraction Layer - initialization routines
++=============================================================================*/
++
++
++#include "interface/vcos/vcos_types.h"
++#include "vcos_platform.h"
++
++#ifdef __cplusplus
++extern "C" {
++#endif
++
++/** \file
++ *
++ * Some OS support libraries need some initialization. To support this, call this
++ * function at the start of day.
++ */
++
++VCOSPRE_ VCOS_STATUS_T VCOSPOST_ vcos_init(void);
++VCOSPRE_ void VCOSPOST_ vcos_deinit(void);
++VCOSPRE_ void VCOSPOST_ vcos_global_lock(void);
++VCOSPRE_ void VCOSPOST_ vcos_global_unlock(void);
++
++/** Pass in the argv/argc arguments passed to main() */
++VCOSPRE_ void VCOSPOST_ vcos_set_args(int argc, const char **argv);
++
++/** Return argc. */
++VCOSPRE_ int VCOSPOST_ vcos_get_argc(void);
++
++/** Return argv. */
++VCOSPRE_ const char ** VCOSPOST_ vcos_get_argv(void);
++
++#ifdef __cplusplus
++}
++#endif
++
+--- /dev/null
++++ b/drivers/misc/vc04_services/interface/vcos/vcos_logging.h
+@@ -0,0 +1,279 @@
++/*=============================================================================
++Copyright (c) 2009-2011 Broadcom Europe Limited.
++All rights reserved.
++
++Project : vcfw
++Module : chip driver
++
++FILE DESCRIPTION
++VideoCore OS Abstraction Layer - logging support
++=============================================================================*/
++
++#ifndef VCOS_LOGGING_H
++#define VCOS_LOGGING_H
++
++#ifdef __cplusplus
++extern "C" {
++#endif
++
++#include <stdarg.h>
++
++#include "interface/vcos/vcos_types.h"
++#include "vcos_platform.h"
++
++/**
++ * \file
++ *
++ * Logging support
++ *
++ * This provides categorised logging. Clients register
++ * a category, and then get a number of logging levels for
++ * that category.
++ *
++ * The logging level flag is tested using a flag *before* the
++ * function call, which makes logging very fast when disabled - there
++ * is no function call overhead just to find out that this log
++ * message is disabled.
++ *
++ * \section VCOS_LOG_CATEGORY
++ *
++ * As a convenience, clients define VCOS_LOG_CATEGORY to point to
++ * their category; the various vcos_log_xxx() macros then expand to
++ * use this.
++ *
++ * e.g.
++ *
++ * #define VCOS_LOG_CATEGORY (&my_category)
++ *
++ * #include <interface/vcos/vcos.h>
++ *
++ * VCOS_LOG_CAT_T my_category;
++ *
++ * ....
++ *
++ * vcos_log_trace("Stuff happened: %d", n_stuff);
++ *
++ */
++
++/** Logging levels */
++typedef enum VCOS_LOG_LEVEL_T
++{
++ VCOS_LOG_UNINITIALIZED = 0,
++ VCOS_LOG_NEVER,
++ VCOS_LOG_ERROR,
++ VCOS_LOG_WARN,
++ VCOS_LOG_INFO,
++ VCOS_LOG_TRACE,
++} VCOS_LOG_LEVEL_T;
++
++
++/** Initialize a logging category without going through vcos_log_register().
++ *
++ * This is useful for the case where there is no obvious point to do the
++ * registration (no initialization function for the module). However, it
++ * means that your logging category is not registered, so cannot be easily
++ * changed at run-time.
++ */
++#define VCOS_LOG_INIT(n,l) { l, n, 0, {0}, 0, 0 }
++
++/** A registered logging category.
++ */
++typedef struct VCOS_LOG_CAT_T
++{
++ VCOS_LOG_LEVEL_T level; /** Which levels are enabled for this category */
++ const char *name; /** Name for this category. */
++ struct VCOS_LOG_CAT_T *next;
++ struct {
++ unsigned int want_prefix:1;
++ } flags;
++ unsigned int refcount;
++ void *platform_data; /** platform specific data */
++} VCOS_LOG_CAT_T;
++
++typedef void (*VCOS_VLOG_IMPL_FUNC_T)(const VCOS_LOG_CAT_T *cat, VCOS_LOG_LEVEL_T _level, const char *fmt, va_list args);
++
++/** Convert a VCOS_LOG_LEVEL_T into a printable string.
++ * The platform needs to implement this function.
++ */
++VCOSPRE_ const char * VCOSPOST_ vcos_log_level_to_string( VCOS_LOG_LEVEL_T level );
++
++/** Convert a string into a VCOS_LOG_LEVEL_T
++ * The platform needs to implement this function.
++ */
++VCOSPRE_ VCOS_STATUS_T VCOSPOST_ vcos_string_to_log_level( const char *str, VCOS_LOG_LEVEL_T *level );
++
++/** Log a message. Basic API. Normal code should not use this.
++ * The platform needs to implement this function.
++ */
++VCOSPRE_ void VCOSPOST_ vcos_log_impl(const VCOS_LOG_CAT_T *cat, VCOS_LOG_LEVEL_T _level, const char *fmt, ...) VCOS_FORMAT_ATTR_(printf, 3, 4);
++
++/** Log a message using a varargs parameter list. Normal code should
++ * not use this.
++ */
++VCOSPRE_ void VCOSPOST_ vcos_vlog_impl(const VCOS_LOG_CAT_T *cat, VCOS_LOG_LEVEL_T _level, const char *fmt, va_list args) VCOS_FORMAT_ATTR_(printf, 3, 0);
++
++/** Set the function which does the actual logging output.
++ * Passing in NULL causes the default logging function to be
++ * used.
++ */
++VCOSPRE_ void VCOSPOST_ vcos_set_vlog_impl( VCOS_VLOG_IMPL_FUNC_T vlog_impl_func );
++
++/** The default logging function, which is provided by each
++ * platform.
++ */
++
++VCOSPRE_ void VCOSPOST_ vcos_vlog_default_impl(const VCOS_LOG_CAT_T *cat, VCOS_LOG_LEVEL_T _level, const char *fmt, va_list args) VCOS_FORMAT_ATTR_(printf, 3, 0);
++
++/*
++ * Initialise the logging subsystem. This is called from
++ * vcos_init() so you don't normally need to call it.
++ */
++VCOSPRE_ void VCOSPOST_ vcos_logging_init(void);
++
++/** Register a logging category.
++ *
++ * @param name the name of this category.
++ * @param category the category to register.
++ */
++VCOSPRE_ void VCOSPOST_ vcos_log_register(const char *name, VCOS_LOG_CAT_T *category);
++
++/** Unregister a logging category.
++ */
++VCOSPRE_ void VCOSPOST_ vcos_log_unregister(VCOS_LOG_CAT_T *category);
++
++/** Return a default logging category, for people too lazy to create their own.
++ *
++ * Using the default category will be slow (there's an extra function
++ * call overhead). Don't do this in normal code.
++ */
++VCOSPRE_ const VCOS_LOG_CAT_T * VCOSPOST_ vcos_log_get_default_category(void);
++
++VCOSPRE_ void VCOSPOST_ vcos_set_log_options(const char *opt);
++
++/** Set the logging level for a category at run time. Without this, the level
++ * will be that set by vcos_log_register from a platform-specific source.
++ *
++ * @param category the category to modify.
++ * @param level the new logging level for this category.
++ */
++VCOS_STATIC_INLINE void vcos_log_set_level(VCOS_LOG_CAT_T *category, VCOS_LOG_LEVEL_T level)
++{
++ category->level = level;
++}
++
++#define vcos_log_dump_mem(cat,label,addr,voidMem,numBytes) do { if (vcos_is_log_enabled(cat,VCOS_LOG_TRACE)) vcos_log_dump_mem_impl(cat,label,addr,voidMem,numBytes); } while (0)
++
++void vcos_log_dump_mem_impl( const VCOS_LOG_CAT_T *cat,
++ const char *label,
++ uint32_t addr,
++ const void *voidMem,
++ size_t numBytes );
++
++/*
++ * Platform specific hooks (optional).
++ */
++#ifndef vcos_log_platform_init
++#define vcos_log_platform_init() (void)0
++#endif
++
++#ifndef vcos_log_platform_register
++#define vcos_log_platform_register(category) (void)0
++#endif
++
++#ifndef vcos_log_platform_unregister
++#define vcos_log_platform_unregister(category) (void)0
++#endif
++
++/* VCOS_TRACE() - deprecated macro which just outputs in a debug build and
++ * is a no-op in a release build.
++ *
++ * _VCOS_LOG_X() - internal macro which outputs if the current level for the
++ * particular category is higher than the supplied message level.
++ */
++
++#define VCOS_LOG_DFLT_CATEGORY vcos_log_get_default_category()
++
++#define _VCOS_LEVEL(x) (x)
++
++#define vcos_is_log_enabled(cat,_level) (_VCOS_LEVEL((cat)->level) >= _VCOS_LEVEL(_level))
++
++#if defined(_VCOS_METAWARE) || defined(__GNUC__)
++
++# if !defined(NDEBUG) || defined(VCOS_ALWAYS_WANT_LOGGING)
++# define VCOS_LOGGING_ENABLED
++# define _VCOS_LOG_X(cat, _level, fmt...) do { if (vcos_is_log_enabled(cat,_level)) vcos_log_impl(cat,_level,fmt); } while (0)
++# define _VCOS_VLOG_X(cat, _level, fmt, ap) do { if (vcos_is_log_enabled(cat,_level)) vcos_vlog_impl(cat,_level,fmt,ap); } while (0)
++# else
++# define _VCOS_LOG_X(cat, _level, fmt...) (void)0
++# define _VCOS_VLOG_X(cat, _level, fmt, ap) (void)0
++# endif
++
++
++
++# define vcos_log_error(...) _VCOS_LOG_X(VCOS_LOG_CATEGORY, VCOS_LOG_ERROR, __VA_ARGS__)
++# define vcos_log_warn(...) _VCOS_LOG_X(VCOS_LOG_CATEGORY, VCOS_LOG_WARN, __VA_ARGS__)
++# define vcos_log_info(...) _VCOS_LOG_X(VCOS_LOG_CATEGORY, VCOS_LOG_INFO, __VA_ARGS__)
++# define vcos_log_trace(...) _VCOS_LOG_X(VCOS_LOG_CATEGORY, VCOS_LOG_TRACE, __VA_ARGS__)
++
++# define vcos_vlog_error(fmt,ap) _VCOS_VLOG_X(VCOS_LOG_CATEGORY, VCOS_LOG_ERROR, fmt, ap)
++# define vcos_vlog_warn(fmt,ap) _VCOS_VLOG_X(VCOS_LOG_CATEGORY, VCOS_LOG_WARN, fmt, ap)
++# define vcos_vlog_info(fmt,ap) _VCOS_VLOG_X(VCOS_LOG_CATEGORY, VCOS_LOG_INFO, fmt, ap)
++# define vcos_vlog_trace(fmt,ap) _VCOS_VLOG_X(VCOS_LOG_CATEGORY, VCOS_LOG_TRACE, fmt, ap)
++
++# define vcos_log(...) _VCOS_LOG_X(VCOS_LOG_DFLT_CATEGORY, VCOS_LOG_INFO, __VA_ARGS__)
++# define vcos_vlog(fmt,ap) _VCOS_VLOG_X(VCOS_LOG_DFLT_CATEGORY, VCOS_LOG_INFO, fmt, ap)
++# define VCOS_ALERT(...) _VCOS_LOG_X(VCOS_LOG_DFLT_CATEGORY, VCOS_LOG_ERROR, __VA_ARGS__)
++# define VCOS_TRACE(...) _VCOS_LOG_X(VCOS_LOG_DFLT_CATEGORY, VCOS_LOG_INFO, __VA_ARGS__)
++
++/*
++ * MS Visual Studio - pre 2005 does not grok variadic macros
++ */
++#elif defined(_MSC_VER)
++
++# if _MSC_VER >= 1400
++
++# if !defined(NDEBUG) || defined(VCOS_ALWAYS_WANT_LOGGING)
++# define VCOS_LOGGING_ENABLED
++# define _VCOS_LOG_X(cat, _level, fmt,...) do { if (vcos_is_log_enabled(cat,_level)) vcos_log_impl(cat, _level, fmt, __VA_ARGS__); } while (0)
++# else
++# define _VCOS_LOG_X(cat, _level, fmt,...) (void)0
++# endif
++
++# define vcos_log_error(fmt,...) _VCOS_LOG_X(VCOS_LOG_CATEGORY, VCOS_LOG_ERROR, fmt, __VA_ARGS__)
++# define vcos_log_warn(fmt,...) _VCOS_LOG_X(VCOS_LOG_CATEGORY, VCOS_LOG_WARN, fmt, __VA_ARGS__)
++# define vcos_log_info(fmt,...) _VCOS_LOG_X(VCOS_LOG_CATEGORY, VCOS_LOG_INFO, fmt, __VA_ARGS__)
++# define vcos_log_trace(fmt,...) _VCOS_LOG_X(VCOS_LOG_CATEGORY, VCOS_LOG_TRACE, fmt, __VA_ARGS__)
++
++# define vcos_log(fmt,...) _VCOS_LOG_X(VCOS_LOG_DFLT_CATEGORY, VCOS_LOG_INFO, fmt)
++# define VCOS_ALERT(fmt,...) _VCOS_LOG_X(VCOS_LOG_DFLT_CATEGORY, VCOS_LOG_ERROR, fmt)
++# define VCOS_TRACE(fmt,...) _VCOS_LOG_X(VCOS_LOG_DFLT_CATEGORY, VCOS_LOG_INFO, fmt)
++
++# else /* _MSC_VER >= 1400 */
++
++/* do not define these */
++
++# endif /* _MSC_VER >= 1400 */
++
++#endif
++
++#if VCOS_HAVE_CMD
++
++#include "interface/vcos/vcos_cmd.h"
++
++/*
++ * These are the log sub-commands. They're exported here for user-mode apps which
++ * may want to call these, since the "log" command isn't registered for user-mode
++ * apps (vcdbg for example, has its own log command).
++ */
++VCOSPRE_ VCOS_STATUS_T VCOSPOST_ vcos_log_assert_cmd( VCOS_CMD_PARAM_T *param );
++VCOSPRE_ VCOS_STATUS_T VCOSPOST_ vcos_log_set_cmd( VCOS_CMD_PARAM_T *param );
++VCOSPRE_ VCOS_STATUS_T VCOSPOST_ vcos_log_status_cmd( VCOS_CMD_PARAM_T *param );
++VCOSPRE_ VCOS_STATUS_T VCOSPOST_ vcos_log_test_cmd( VCOS_CMD_PARAM_T *param );
++#endif
++
++#ifdef __cplusplus
++}
++#endif
++#endif /* VCOS_LOGGING_H */
++
++
+--- /dev/null
++++ b/drivers/misc/vc04_services/interface/vcos/vcos_lowlevel_thread.h
+@@ -0,0 +1,107 @@
++/*=============================================================================
++Copyright (c) 2009 Broadcom Europe Limited.
++All rights reserved.
++
++Project : vcfw
++Module : chip driver
++
++FILE DESCRIPTION
++VideoCore OS Abstraction Layer - low level thread support
++=============================================================================*/
++
++#ifndef VCOS_LOWLEVEL_THREAD_H
++#define VCOS_LOWLEVEL_THREAD_H
++
++#ifdef __cplusplus
++extern "C" {
++#endif
++
++#include "interface/vcos/vcos_types.h"
++#include "vcos_platform.h"
++
++/**
++ * \file
++ *
++ * This defines a low level thread API that is supported by *some* operating systems
++ * and can be used to construct the regular "joinable thread" API on those operating
++ * systems.
++ *
++ * Most clients will not need to use this code.
++ *
++ * \sa vcos_joinable_thread.h
++ */
++
++/**
++ * \brief Create a thread.
++ *
++ * This creates a thread which can be stopped either by returning from the
++ * entry point function or by calling vcos_llthread_exit from within the entry
++ * point function. The thread must be cleaned up by calling
++ * vcos_llthread_delete. vcos_llthread_delete may or may not terminate the
++ * thread.
++ *
++ * The preemptible parameter familiar from Nucleus is removed, as it is unused in
++ * VideoCore code. Affinity is added, since we do use this.
++ *
++ * @param thread Filled in with thread instance
++ * @param name An optional name for the thread. "" may be used (but
++ * a name will aid in debugging).
++ * @param entry Entry point
++ * @param arg A single argument passed to the entry point function
++ * @param stack Pointer to stack address
++ * @param stacksz Size of stack in bytes
++ * @param priority Priority of task, between VCOS_PRI_LOW and VCOS_PRI_HIGH
++ * @param affinity CPU affinity
++ *
++ * @sa vcos_llthread_terminate vcos_llthread_delete
++ */
++VCOSPRE_ VCOS_STATUS_T VCOSPOST_ vcos_llthread_create(VCOS_LLTHREAD_T *thread,
++ const char *name,
++ VCOS_LLTHREAD_ENTRY_FN_T entry,
++ void *arg,
++ void *stack,
++ VCOS_UNSIGNED stacksz,
++ VCOS_UNSIGNED priority,
++ VCOS_UNSIGNED affinity,
++ VCOS_UNSIGNED timeslice,
++ VCOS_UNSIGNED autostart);
++
++/**
++ * \brief Exits the current thread.
++ */
++VCOSPRE_ void VCOSPOST_ vcos_llthread_exit(void);
++
++/**
++ * \brief Delete a thread. This must be called to cleanup after
++ * vcos_llthread_create. This may or may not terminate the thread.
++ * It does not clean up any resources that may have been
++ * allocated by the thread.
++ */
++VCOSPRE_ void VCOSPOST_ vcos_llthread_delete(VCOS_LLTHREAD_T *thread);
++
++/**
++ * \brief Return current lowlevel thread pointer.
++ */
++VCOS_INLINE_DECL
++VCOS_LLTHREAD_T *vcos_llthread_current(void);
++
++/**
++ * Resume a thread.
++ */
++VCOS_INLINE_DECL
++void vcos_llthread_resume(VCOS_LLTHREAD_T *thread);
++
++VCOSPRE_ int VCOSPOST_ vcos_llthread_running(VCOS_LLTHREAD_T *thread);
++
++/**
++ * \brief Create a VCOS_LLTHREAD_T for the current thread. This is so we can
++ * have VCOS_LLTHREAD_Ts even for threads not originally created by VCOS (eg
++ * the thread that calls vcos_init).
++ */
++extern VCOS_STATUS_T _vcos_llthread_create_attach(VCOS_LLTHREAD_T *thread);
++
++#ifdef __cplusplus
++}
++#endif
++#endif
++
+--- /dev/null
++++ b/drivers/misc/vc04_services/interface/vcos/vcos_mem.h
+@@ -0,0 +1,81 @@
++/*=============================================================================
++Copyright (c) 2009 Broadcom Europe Limited.
++All rights reserved.
++
++Project : vcfw
++Module : chip driver
++
++FILE DESCRIPTION
++VideoCore OS Abstraction Layer - memory support
++=============================================================================*/
++
++#ifndef VCOS_MEM_H
++#define VCOS_MEM_H
++
++#ifdef __cplusplus
++extern "C" {
++#endif
++
++#include "interface/vcos/vcos_types.h"
++#include "vcos_platform.h"
++
++/** \file
++ *
++ * Memory allocation api (malloc/free equivalents) is for benefit of host
++ * applications. VideoCore code should use rtos_XXX functions.
++ *
++ */
++
++
++/** Allocate memory
++ *
++ * @param size Size of memory to allocate
++ * @param description Description, to aid in debugging. May be ignored internally on some platforms.
++ */
++VCOS_INLINE_DECL
++void *vcos_malloc(VCOS_UNSIGNED size, const char *description);
++
++void *vcos_kmalloc(VCOS_UNSIGNED size, const char *description);
++void *vcos_kcalloc(VCOS_UNSIGNED num, VCOS_UNSIGNED size, const char *description);
++
++/** Allocate cleared memory
++ *
++ * @param num Number of items to allocate.
++ * @param size Size of each item in bytes.
++ * @param description Description, to aid in debugging. May be ignored internally on some platforms.
++ */
++VCOS_INLINE_DECL
++void *vcos_calloc(VCOS_UNSIGNED num, VCOS_UNSIGNED size, const char *description);
++
++/** Free memory
++ *
++ * Free memory that has been allocated.
++ */
++VCOS_INLINE_DECL
++void vcos_free(void *ptr);
++
++void vcos_kfree(void *ptr);
++
++/** Allocate aligned memory
++ *
++ * Allocate memory aligned on the specified boundary.
++ *
++ * @param size Size of memory to allocate
++ * @param description Description, to aid in debugging. May be ignored internally on some platforms.
++ */
++VCOS_INLINE_DECL
++void *vcos_malloc_aligned(VCOS_UNSIGNED size, VCOS_UNSIGNED align, const char *description);
++
++/** Return the amount of free heap memory
++ *
++ */
++VCOS_INLINE_DECL
++unsigned long vcos_get_free_mem(void);
++
++#ifdef __cplusplus
++}
++#endif
++
++#endif
++
++
+--- /dev/null
++++ b/drivers/misc/vc04_services/interface/vcos/vcos_msgqueue.h
+@@ -0,0 +1,157 @@
++/*=============================================================================
++Copyright (c) 2009 Broadcom Europe Limited.
++All rights reserved.
++
++Project : vcfw
++Module : chip driver
++
++FILE DESCRIPTION
++VCOS - packet-like messages, based loosely on those found in TRIPOS.
++=============================================================================*/
++
++#ifndef VCOS_MSGQUEUE_H
++#define VCOS_MSGQUEUE_H
++
++#ifdef __cplusplus
++extern "C" {
++#endif
++
++#include "interface/vcos/vcos_types.h"
++#include "vcos_platform.h"
++
++/**
++ * \file
++ *
++ * Packet-like messages, based loosely on those found in TRIPOS and
++ * derivatives thereof.
++ *
++ * A task can send a message *pointer* to another task, where it is
++ * queued on a linked list and the task woken up. The receiving task
++ * consumes all of the messages on its input queue, and optionally
++ * sends back replies using the original message memory.
++ *
++ * A caller can wait for the reply to a specific message - any other
++ * messages that arrive in the meantime are queued separately.
++ *
++ *
++ * All messages have a standard common layout, but the payload area can
++ * be used freely to extend this.
++ */
++
++/** Map the payload portion of a message to a structure pointer.
++ */
++#define VCOS_MSG_DATA(_msg) (void*)((_msg)->data)
++
++/** Standard message ids - FIXME - these need to be done properly! */
++#define VCOS_MSG_N_QUIT 1
++#define VCOS_MSG_N_OPEN 2
++#define VCOS_MSG_N_CLOSE 3
++#define VCOS_MSG_N_PRIVATE (1<<20)
++
++#define VCOS_MSG_REPLY_BIT (1<<31)
++
++/** Make gnuc compiler be happy about pointer punning */
++#ifdef __GNUC__
++#define __VCOS_MAY_ALIAS __attribute__((__may_alias__))
++#else
++#define __VCOS_MAY_ALIAS
++#endif
++
++/** A single message queue.
++ */
++typedef struct VCOS_MSGQUEUE_T
++{
++ struct VCOS_MSG_T *head; /**< head of linked list of messages waiting on this queue */
++ struct VCOS_MSG_T *tail; /**< tail of message queue */
++ VCOS_SEMAPHORE_T sem; /**< thread waits on this for new messages */
++ VCOS_MUTEX_T lock; /**< locks the messages list */
++} VCOS_MSGQUEUE_T;
++
++/** A single message
++ */
++typedef struct VCOS_MSG_T
++{
++ uint32_t code; /**< message code */
++ int error; /**< error status signalled back to caller */
++ VCOS_MSGQUEUE_T *dst; /**< destination queue */
++ VCOS_MSGQUEUE_T *src; /**< source; replies go back to here */
++ struct VCOS_MSG_T *next; /**< next in queue */
++ VCOS_THREAD_T *src_thread; /**< for debug */
++ uint32_t data[25]; /**< payload area */
++} VCOS_MSG_T;
++
++/** An endpoint
++ */
++typedef struct VCOS_MSG_ENDPOINT_T
++{
++ VCOS_MSGQUEUE_T primary; /**< incoming messages */
++ VCOS_MSGQUEUE_T secondary; /**< this is used for waitspecific */
++ char name[32]; /**< name of this endpoint, for find() */
++ struct VCOS_MSG_ENDPOINT_T *next; /**< next in global list of endpoints */
++} VCOS_MSG_ENDPOINT_T;
++#define MSG_REPLY_BIT (1<<31)
++
++/** Initalise the library. Normally called from vcos_init().
++ */
++extern VCOS_STATUS_T vcos_msgq_init(void);
++
++/** Find a message queue by name and get a handle to it.
++ *
++ * @param name the name of the queue to find
++ *
++ * @return The message queue, or NULL if not found.
++ */
++VCOSPRE_ VCOS_MSGQUEUE_T VCOSPOST_ *vcos_msgq_find(const char *name);
++
++/** Wait for a message queue to come into existence. If it already exists,
++ * return immediately, otherwise block.
++ *
++ * On the whole, if you find yourself using this, it is probably a sign
++ * of poor design, since you should create all the server threads first,
++ * and then the client threads. But it is sometimes useful.
++ *
++ * @param name the name of the queue to find
++ * @return The message queue
++ */
++VCOSPRE_ VCOS_MSGQUEUE_T VCOSPOST_ *vcos_msgq_wait(const char *name);
++
++/** Send a message.
++ */
++VCOSPRE_ void VCOSPOST_ vcos_msg_send(VCOS_MSGQUEUE_T *dest, uint32_t code, VCOS_MSG_T *msg);
++
++/** Send a message and wait for a reply.
++ */
++VCOSPRE_ void VCOSPOST_ vcos_msg_sendwait(VCOS_MSGQUEUE_T *queue, uint32_t code, VCOS_MSG_T *msg);
++
++/** Wait for a message on this thread's endpoint.
++ */
++VCOSPRE_ VCOS_MSG_T * VCOSPOST_ vcos_msg_wait(void);
++
++/** Wait for a specific message.
++ */
++VCOS_MSG_T * vcos_msg_wait_specific(VCOS_MSGQUEUE_T *queue, VCOS_MSG_T *msg);
++
++/** Peek for a message on this thread's endpoint, if a message is not available, NULL is
++ returned. If a message is available it will be removed from the endpoint and returned.
++ */
++VCOSPRE_ VCOS_MSG_T * VCOSPOST_ vcos_msg_peek(void);
++
++/** Send a reply to a message
++ */
++VCOSPRE_ void VCOSPOST_ vcos_msg_reply(VCOS_MSG_T *msg);
++
++/** Create an endpoint. Each thread should need no more than one of these - if you
++ * find yourself needing a second one, you've done something wrong.
++ */
++VCOSPRE_ VCOS_STATUS_T VCOSPOST_ vcos_msgq_endpoint_create(VCOS_MSG_ENDPOINT_T *ep, const char *name);
++
++/** Destroy an endpoint.
++ */
++VCOSPRE_ void VCOSPOST_ vcos_msgq_endpoint_delete(VCOS_MSG_ENDPOINT_T *ep);
++
++#ifdef __cplusplus
++}
++#endif
++#endif
++
++
+--- /dev/null
++++ b/drivers/misc/vc04_services/interface/vcos/vcos_mutex.h
+@@ -0,0 +1,92 @@
++/*=============================================================================
++Copyright (c) 2009 Broadcom Europe Limited.
++All rights reserved.
++
++Project : vcfw
++Module : chip driver
++
++FILE DESCRIPTION
++VideoCore OS Abstraction Layer - mutex public header file
++=============================================================================*/
++
++#ifndef VCOS_MUTEX_H
++#define VCOS_MUTEX_H
++
++#ifdef __cplusplus
++extern "C" {
++#endif
++
++#include "interface/vcos/vcos_types.h"
++#include "vcos_platform.h"
++
++/**
++ * \file vcos_mutex.h
++ *
++ * Mutex API. Mutexes are not re-entrant, as supporting this adds extra code
++ * that slows down clients which have been written sensibly.
++ *
++ * \sa vcos_reentrant_mutex.h
++ *
++ */
++
++/** Create a mutex.
++ *
++ * @param m Filled in with mutex on return
++ * @param name A non-null name for the mutex, used for diagnostics.
++ *
++ * @return VCOS_SUCCESS if mutex was created, or error code.
++ */
++VCOS_INLINE_DECL
++VCOS_STATUS_T vcos_mutex_create(VCOS_MUTEX_T *m, const char *name);
++
++/** Delete the mutex.
++ */
++VCOS_INLINE_DECL
++void vcos_mutex_delete(VCOS_MUTEX_T *m);
++
++/**
++ * \brief Wait to claim the mutex.
++ *
++ * On most platforms this always returns VCOS_SUCCESS, and so would ideally be
++ * a void function, however some platforms allow a wait to be interrupted so
++ * it remains non-void.
++ *
++ * Try to obtain the mutex.
++ * @param m Mutex to wait on
++ * @return VCOS_SUCCESS - mutex was taken.
++ * VCOS_EAGAIN - could not take mutex.
++ */
++#ifndef vcos_mutex_lock
++VCOS_INLINE_DECL
++VCOS_STATUS_T vcos_mutex_lock(VCOS_MUTEX_T *m);
++
++/** Release the mutex.
++ */
++VCOS_INLINE_DECL
++void vcos_mutex_unlock(VCOS_MUTEX_T *m);
++#endif
++
++/** Test if the mutex is already locked.
++ *
++ * @return 1 if mutex is locked, 0 if it is unlocked.
++ */
++VCOS_INLINE_DECL
++int vcos_mutex_is_locked(VCOS_MUTEX_T *m);
++
++/** Obtain the mutex if possible.
++ *
++ * @param m the mutex to try to obtain
++ *
++ * @return VCOS_SUCCESS if mutex is succesfully obtained, or VCOS_EAGAIN
++ * if it is already in use by another thread.
++ */
++#ifndef vcos_mutex_trylock
++VCOS_INLINE_DECL
++VCOS_STATUS_T vcos_mutex_trylock(VCOS_MUTEX_T *m);
++#endif
++
++
++#ifdef __cplusplus
++}
++#endif
++#endif
+--- /dev/null
++++ b/drivers/misc/vc04_services/interface/vcos/vcos_once.h
+@@ -0,0 +1,42 @@
++/*=============================================================================
++Copyright (c) 2011 Broadcom Europe Limited.
++All rights reserved.
++
++Project : vcfw
++Module : chip driver
++
++FILE DESCRIPTION
++VideoCore OS Abstraction Layer - 'once'
++=============================================================================*/
++
++#ifndef VCOS_ONCE_H
++#define VCOS_ONCE_H
++
++#ifdef __cplusplus
++extern "C" {
++#endif
++
++#include "interface/vcos/vcos_types.h"
++#include "vcos_platform.h"
++
++/**
++ * \file vcos_once.h
++ *
++ * Ensure something is called only once.
++ *
++ * Initialize once_control to VCOS_ONCE_INIT. The first
++ * time this is called, the init_routine will be called. Thereafter
++ * it won't.
++ *
++ * \sa pthread_once()
++ *
++ */
++
++VCOS_STATUS_T vcos_once(VCOS_ONCE_T *once_control,
++ void (*init_routine)(void));
++
++#ifdef __cplusplus
++}
++#endif
++#endif
++
+--- /dev/null
++++ b/drivers/misc/vc04_services/interface/vcos/vcos_semaphore.h
+@@ -0,0 +1,115 @@
++/*=============================================================================
++Copyright (c) 2009 Broadcom Europe Limited.
++All rights reserved.
++
++Project : vcfw
++Module : chip driver
++
++FILE DESCRIPTION
++VideoCore OS Abstraction Layer - public header file
++=============================================================================*/
++
++#ifndef VCOS_SEMAPHORE_H
++#define VCOS_SEMAPHORE_H
++
++#ifdef __cplusplus
++extern "C" {
++#endif
++
++#include "interface/vcos/vcos_types.h"
++#include "vcos_platform.h"
++
++/**
++ * \file vcos_semaphore.h
++ *
++ * \section sem Semaphores
++ *
++ * This provides counting semaphores. Semaphores are not re-entrant. On sensible
++ * operating systems a semaphore can always be posted but can only be taken in
++ * thread (not interrupt) context. Under Nucleus, a LISR cannot post a semaphore,
++ * although it would not be hard to lift this restriction.
++ *
++ * \subsection timeout Timeout
++ *
++ * On both Nucleus and ThreadX a semaphore can be taken with a timeout. This is
++ * not supported by VCOS because it makes the non-timeout code considerably more
++ * complicated (and hence slower). In the unlikely event that you need a timeout
++ * with a semaphore, and you cannot simply redesign your code to avoid it, use
++ * an event flag (vcos_event_flags.h).
++ *
++ * \subsection sem_nucleus Changes from Nucleus:
++ *
++ * Semaphores are always "FIFO" - i.e. sleeping threads are woken in FIFO order. That's
++ * because:
++ * \arg there's no support for NU_PRIORITY in threadx (though it can be emulated, slowly)
++ * \arg we don't appear to actually consciously use it - for example, Dispmanx uses
++ * it, but all threads waiting are the same priority.
++ *
++ */
++
++/**
++ * \brief Create a semaphore.
++ *
++ * Create a semaphore.
++ *
++ * @param sem Pointer to memory to be initialized
++ * @param name A name for this semaphore. The name may be truncated internally.
++ * @param count The initial count for the semaphore.
++ *
++ * @return VCOS_SUCCESS if the semaphore was created.
++ *
++ */
++VCOS_INLINE_DECL
++VCOS_STATUS_T vcos_semaphore_create(VCOS_SEMAPHORE_T *sem, const char *name, VCOS_UNSIGNED count);
++
++/**
++ * \brief Wait on a semaphore.
++ *
++ * There is no timeout option on a semaphore, as adding this will slow down
++ * implementations on some platforms. If you need that kind of behaviour, use
++ * an event group.
++ *
++ * On most platforms this always returns VCOS_SUCCESS, and so would ideally be
++ * a void function, however some platforms allow a wait to be interrupted so
++ * it remains non-void.
++ *
++ * @param sem Semaphore to wait on
++ * @return VCOS_SUCCESS - semaphore was taken.
++ * VCOS_EAGAIN - could not take semaphore
++ *
++ */
++VCOS_INLINE_DECL
++VCOS_STATUS_T vcos_semaphore_wait(VCOS_SEMAPHORE_T *sem);
++
++/**
++ * \brief Try to wait for a semaphore.
++ *
++ * Try to obtain the semaphore. If it is already taken, return VCOS_TIMEOUT.
++ * @param sem Semaphore to wait on
++ * @return VCOS_SUCCESS - semaphore was taken.
++ * VCOS_EAGAIN - could not take semaphore
++ */
++VCOS_INLINE_DECL
++VCOS_STATUS_T vcos_semaphore_trywait(VCOS_SEMAPHORE_T *sem);
++
++/**
++ * \brief Post a semaphore.
++ *
++ * @param sem Semaphore to wait on
++ */
++VCOS_INLINE_DECL
++VCOS_STATUS_T vcos_semaphore_post(VCOS_SEMAPHORE_T *sem);
++
++/**
++ * \brief Delete a semaphore, releasing any resources consumed by it.
++ *
++ * @param sem Semaphore to wait on
++ */
++VCOS_INLINE_DECL
++void vcos_semaphore_delete(VCOS_SEMAPHORE_T *sem);
++
++#ifdef __cplusplus
++}
++#endif
++#endif
++
+--- /dev/null
++++ b/drivers/misc/vc04_services/interface/vcos/vcos_stdbool.h
+@@ -0,0 +1,17 @@
++#ifndef VCOS_STDBOOL_H
++#define VCOS_STDBOOL_H
++
++#ifndef __cplusplus
++
++#if defined(__STDC__) && (__STDC_VERSION__ >= 199901L)
++#include <stdbool.h>
++#else
++typedef enum {
++ false,
++ true
++} bool;
++#endif
++
++#endif /* __cplusplus */
++
++#endif
+--- /dev/null
++++ b/drivers/misc/vc04_services/interface/vcos/vcos_stdint.h
+@@ -0,0 +1,193 @@
++/*=============================================================================
++Copyright (c) 2011 Broadcom Europe Limited.
++All rights reserved.
++
++FILE DESCRIPTION
++
++=============================================================================*/
++
++#ifndef VCOS_STDINT_H
++#define VCOS_STDINT_H
++
++/* Attempt to provide the types defined in stdint.h.
++ *
++ * Ideally this would either call out to a platform-specific
++ * header file (e.g. stdint.h) or define the types on a
++ * per-architecture/compiler basis. But for now we just
++ * use #ifdefs.
++ */
++
++#ifdef __cplusplus
++extern "C" {
++#endif
++
++#ifdef __SYMBIAN32__
++
++typedef signed char int8_t;
++typedef unsigned char uint8_t;
++
++typedef signed short int16_t;
++typedef unsigned short uint16_t;
++
++typedef int16_t int_least16_t;
++
++typedef signed long int32_t;
++typedef unsigned long uint32_t;
++
++typedef signed long long int64_t;
++typedef unsigned long long uint64_t;
++
++typedef int32_t intptr_t;
++typedef uint32_t uintptr_t;
++
++typedef int64_t intmax_t;
++typedef uint64_t uintmax_t;
++
++#define INT8_MIN SCHAR_MIN
++#define INT8_MAX SCHAR_MAX
++#define UINT8_MAX UCHAR_MAX
++#define INT16_MIN SHRT_MIN
++#define INT16_MAX SHRT_MAX
++#define UINT16_MAX USHRT_MAX
++#define INT32_MIN LONG_MIN
++#define INT32_MAX LONG_MAX
++#define UINT32_MAX ULONG_MAX
++#define INT64_MIN LLONG_MIN
++#define INT64_MAX LLONG_MAX
++#define UINT64_MAX ULLONG_MAX
++
++#define INTPTR_MIN INT32_MIN
++#define INTPTR_MAX INT32_MAX
++#define UINTPTR_MAX UINT32_MAX
++#define INTMAX_MIN INT64_MIN
++#define INTMAX_MAX INT64_MAX
++#define INT_LEAST16_MAX INT16_MAX
++#define INT_LEAST16_MAX INT16_MAX
++
++/*{{{ C99 types - THIS WHOLE SECTION IS INCOMPATIBLE WITH C99. IT SHOULD RESIDE IN A STDINT.H SINCE THIS FILE GETS USED ON HOST SIDE */
++
++#elif defined( __STDC__ ) && __STDC_VERSION__ >= 199901L
++
++#include <stdint.h>
++
++#elif defined( __GNUC__ )
++
++#include <stdint.h>
++
++#elif defined(_MSC_VER) /* Visual C define equivalent types */
++
++#include <stddef.h> /* Avoids intptr_t being defined in vadefs.h */
++
++typedef __int8 int8_t;
++typedef unsigned __int8 uint8_t;
++
++typedef __int16 int16_t;
++typedef unsigned __int16 uint16_t;
++
++typedef __int32 int32_t;
++typedef unsigned __int32 uint32_t;
++
++typedef __int64 int64_t;
++typedef unsigned __int64 uint64_t;
++typedef uint32_t uintptr_t;
++typedef int64_t intmax_t;
++typedef uint64_t uintmax_t;
++typedef int16_t int_least16_t;
++
++#elif defined (VCMODS_LCC)
++#include <limits.h>
++
++typedef signed char int8_t;
++typedef unsigned char uint8_t;
++
++typedef signed short int16_t;
++typedef unsigned short uint16_t;
++
++typedef signed long int32_t;
++typedef unsigned long uint32_t;
++
++typedef signed long int64_t; /*!!!! PFCD, this means code using 64bit numbers will be broken on the VCE */
++typedef unsigned long uint64_t; /* !!!! PFCD */
++
++typedef int32_t intptr_t;
++typedef uint32_t uintptr_t;
++typedef int64_t intmax_t;
++typedef uint64_t uintmax_t;
++typedef int16_t int_least16_t;
++
++#define INT8_MIN SCHAR_MIN
++#define INT8_MAX SCHAR_MAX
++#define UINT8_MAX UCHAR_MAX
++#define INT16_MIN SHRT_MIN
++#define INT16_MAX SHRT_MAX
++#define UINT16_MAX USHRT_MAX
++#define INT32_MIN LONG_MIN
++#define INT32_MAX LONG_MAX
++#define UINT32_MAX ULONG_MAX
++#define INT64_MIN LONG_MIN /* !!!! PFCD */
++#define INT64_MAX LONG_MAX /* !!!! PFCD */
++#define UINT64_MAX ULONG_MAX /* !!!! PFCD */
++
++#define INTPTR_MIN INT32_MIN
++#define INTPTR_MAX INT32_MAX
++#define UINTPTR_MAX UINT32_MAX
++#define INTMAX_MIN INT64_MIN
++#define INTMAX_MIN INT64_MIN
++#define INT_LEAST16_MAX INT16_MAX
++#define INT_LEAST16_MAX INT16_MAX
++
++#elif defined(__VIDEOCORE__)
++
++typedef signed char int8_t;
++typedef unsigned char uint8_t;
++
++typedef signed short int16_t;
++typedef unsigned short uint16_t;
++
++typedef signed long int32_t;
++typedef unsigned long uint32_t;
++
++typedef signed long long int64_t;
++typedef unsigned long long uint64_t;
++
++typedef int32_t intptr_t;
++typedef uint32_t uintptr_t;
++typedef int64_t intmax_t;
++typedef uint64_t uintmax_t;
++typedef int16_t int_least16_t;
++
++#define INT8_MIN SCHAR_MIN
++#define INT8_MAX SCHAR_MAX
++#define UINT8_MAX UCHAR_MAX
++#define INT16_MIN SHRT_MIN
++#define INT16_MAX SHRT_MAX
++#define UINT16_MAX USHRT_MAX
++#define INT32_MIN LONG_MIN
++#define INT32_MAX LONG_MAX
++#define UINT32_MAX ULONG_MAX
++#define INT64_MIN LLONG_MIN
++#define INT64_MAX LLONG_MAX
++#define UINT64_MAX ULLONG_MAX
++
++#define INTPTR_MIN INT32_MIN
++#define INTPTR_MAX INT32_MAX
++#define UINTPTR_MAX UINT32_MAX
++#define INTMAX_MIN INT64_MIN
++#define INTMAX_MAX INT64_MAX
++#define INT_LEAST16_MAX INT16_MAX
++#define INT_LEAST16_MAX INT16_MAX
++
++#elif defined (__HIGHC__) && defined(_I386)
++
++#include <stdint.h>
++
++#else
++#error Unknown platform
++#endif
++
++#ifdef __cplusplus
++}
++#endif
++#endif /* VCOS_STDINT_H */
++
++
+--- /dev/null
++++ b/drivers/misc/vc04_services/interface/vcos/vcos_string.h
+@@ -0,0 +1,73 @@
++/*=============================================================================
++Copyright (c) 2009 Broadcom Europe Limited.
++All rights reserved.
++
++Project : vcfw
++Module : chip driver
++
++FILE DESCRIPTION
++VideoCore OS Abstraction Layer - public header file
++=============================================================================*/
++
++#ifndef VCOS_STRING_H
++#define VCOS_STRING_H
++
++/**
++ * \file
++ *
++ * String functions.
++ *
++ */
++
++#ifdef __cplusplus
++extern "C" {
++#endif
++
++#include "interface/vcos/vcos_types.h"
++#include "vcos_platform.h"
++
++#ifdef __KERNEL__
++#include <linux/string.h>
++#else
++#include <string.h>
++#endif
++
++/** Case insensitive string comparison.
++ *
++ */
++
++VCOS_INLINE_DECL
++int vcos_strcasecmp(const char *s1, const char *s2);
++
++VCOS_INLINE_DECL
++int vcos_strncasecmp(const char *s1, const char *s2, size_t n);
++
++VCOSPRE_ int VCOSPOST_ vcos_vsnprintf( char *buf, size_t buflen, const char *fmt, va_list ap );
++
++VCOSPRE_ int VCOSPOST_ vcos_snprintf(char *buf, size_t buflen, const char *fmt, ...);
++
++VCOS_STATIC_INLINE
++int vcos_strlen(const char *s) { return (int)strlen(s); }
++
++VCOS_STATIC_INLINE
++int vcos_strcmp(const char *s1, const char *s2) { return strcmp(s1,s2); }
++
++VCOS_STATIC_INLINE
++int vcos_strncmp(const char *cs, const char *ct, size_t count) { return strncmp(cs, ct, count); }
++
++VCOS_STATIC_INLINE
++char *vcos_strcpy(char *dst, const char *src) { return strcpy(dst, src); }
++
++VCOS_STATIC_INLINE
++char *vcos_strncpy(char *dst, const char *src, size_t count) { return strncpy(dst, src, count); }
++
++VCOS_STATIC_INLINE
++void *vcos_memcpy(void *dst, const void *src, size_t n) { memcpy(dst, src, n); return dst; }
++
++VCOS_STATIC_INLINE
++void *vcos_memset(void *p, int c, size_t n) { return memset(p, c, n); }
++
++#ifdef __cplusplus
++}
++#endif
++#endif
+--- /dev/null
++++ b/drivers/misc/vc04_services/interface/vcos/vcos_thread.h
+@@ -0,0 +1,259 @@
++/*=============================================================================
++Copyright (c) 2009 Broadcom Europe Limited.
++All rights reserved.
++
++Project : vcfw
++Module : chip driver
++
++FILE DESCRIPTION
++VideoCore OS Abstraction Layer - public header file
++=============================================================================*/
++
++#ifndef VCOS_THREAD_H
++#define VCOS_THREAD_H
++
++#ifdef __cplusplus
++extern "C" {
++#endif
++
++#include "interface/vcos/vcos_types.h"
++#include "vcos_platform.h"
++
++/**
++ * \file vcos_thread.h
++ *
++ * \section thread Threads
++ *
++ * Under Nucleus, a thread is created by NU_Create_Task, passing in the stack
++ * and various other parameters. To stop the thread, NU_Terminate_Thread() and
++ * NU_Delete_Thread() are called.
++ *
++ * Unfortunately it's not possible to emulate this API under some fairly common
++ * operating systems. Under Windows you can't pass in the stack, and you can't
++ * safely terminate a thread.
++ *
++ * Therefore, an API which is similar to the pthreads API is used instead. This
++ * API can (mostly) be emulated under all interesting operating systems.
++ *
++ * Obviously this makes the code somewhat more complicated on VideoCore than it
++ * would otherwise be - we end up with an extra mutex per thread, and some code
++ * that waits for it. The benefit is that we have a single way of creating
++ * threads that works consistently on all platforms (apart from stack supplying).
++ *
++ * \subsection stack Stack
++ *
++ * It's still not possible to pass in the stack address, but this can be made
++ * much more obvious in the API: the relevant function is missing and the
++ * CPP symbol VCOS_CAN_SET_STACK_ADDR is zero rather than one.
++ *
++ * \subsection thr_create Creating a thread
++ *
++ * The simplest way to create a thread is with vcos_thread_create() passing in a
++ * NULL thread parameter argument. To wait for the thread to exit, call
++ * vcos_thread_join().
++ *
++ * \subsection back Backward compatibility
++ *
++ * To ease migration, a "classic" thread creation API is provided for code
++ * that used to make use of Nucleus, vcos_thread_create_classic(). The
++ * arguments are not exactly the same, as the PREEMPT parameter is dropped.
++ *
++ */
++
++#define VCOS_AFFINITY_CPU0 _VCOS_AFFINITY_CPU0
++#define VCOS_AFFINITY_CPU1 _VCOS_AFFINITY_CPU1
++#define VCOS_AFFINITY_MASK _VCOS_AFFINITY_MASK
++#define VCOS_AFFINITY_DEFAULT _VCOS_AFFINITY_DEFAULT
++#define VCOS_AFFINITY_THISCPU _VCOS_AFFINITY_THISCPU
++
++/** Report whether or not we have an RTOS at all, and hence the ability to
++ * create threads.
++ */
++VCOSPRE_ int VCOSPOST_ vcos_have_rtos(void);
++
++/** Create a thread. It must be cleaned up by calling vcos_thread_join().
++ *
++ * @param thread Filled in on return with thread
++ * @param name A name for the thread. May be the empty string.
++ * @param attrs Attributes; default attributes will be used if this is NULL.
++ * @param entry Entry point.
++ * @param arg Argument passed to the entry point.
++ */
++VCOSPRE_ VCOS_STATUS_T VCOSPOST_ vcos_thread_create(VCOS_THREAD_T *thread,
++ const char *name,
++ VCOS_THREAD_ATTR_T *attrs,
++ VCOS_THREAD_ENTRY_FN_T entry,
++ void *arg);
++
++/** Exit the thread from within the thread function itself.
++ * Resources must still be cleaned up via a call to thread_join().
++ *
++ * The thread can also be terminated by simply exiting the thread function.
++ *
++ * @param data Data passed to thread_join. May be NULL.
++ */
++VCOSPRE_ void VCOSPOST_ vcos_thread_exit(void *data);
++
++/** Wait for a thread to terminate and then clean up its resources.
++ *
++ * @param thread Thread to wait for
++ * @param pData Updated to point at data provided in vcos_thread_exit or exit
++ * code of thread function.
++ */
++VCOSPRE_ void VCOSPOST_ vcos_thread_join(VCOS_THREAD_T *thread,
++ void **pData);
++
++
++/**
++ * \brief Create a thread using an API similar to the one "traditionally"
++ * used under Nucleus.
++ *
++ * This creates a thread which must be cleaned up by calling vcos_thread_join().
++ * The thread cannot be simply terminated (as in Nucleus and ThreadX) as thread
++ * termination is not universally supported.
++ *
++ * @param thread Filled in with thread instance
++ * @param name An optional name for the thread. NULL or "" may be used (but
++ * a name will aid in debugging).
++ * @param entry Entry point
++ * @param arg A single argument passed to the entry point function
++ * @param stack Pointer to stack address
++ * @param stacksz Size of stack in bytes
++ * @param priaff Priority of task, between VCOS_PRI_LOW and VCOS_PRI_HIGH, ORed with the CPU affinity
++ * @param autostart If non-zero the thread will start immediately.
++ * @param timeslice Timeslice (system ticks) for this thread.
++ *
++ * @sa vcos_thread_terminate vcos_thread_delete
++ */
++VCOSPRE_ VCOS_STATUS_T VCOSPOST_ vcos_thread_create_classic(VCOS_THREAD_T *thread,
++ const char *name,
++ void *(*entry)(void *arg),
++ void *arg,
++ void *stack,
++ VCOS_UNSIGNED stacksz,
++ VCOS_UNSIGNED priaff,
++ VCOS_UNSIGNED timeslice,
++ VCOS_UNSIGNED autostart);
++
++/**
++ * \brief Set a thread's priority
++ *
++ * Set the priority for a thread.
++ *
++ * @param thread The thread
++ * @param pri Thread priority in VCOS_PRI_MASK bits; affinity in VCOS_AFFINITY_MASK bits.
++ */
++VCOS_INLINE_DECL
++void vcos_thread_set_priority(VCOS_THREAD_T *thread, VCOS_UNSIGNED pri);
++
++/**
++ * \brief Return the currently executing thread.
++ *
++ */
++VCOS_INLINE_DECL
++VCOS_THREAD_T *vcos_thread_current(void);
++
++/**
++ * \brief Return the thread's priority.
++ */
++VCOS_INLINE_DECL
++VCOS_UNSIGNED vcos_thread_get_priority(VCOS_THREAD_T *thread);
++
++/**
++ * \brief Return the thread's cpu affinity.
++ */
++VCOS_INLINE_DECL
++VCOS_UNSIGNED vcos_thread_get_affinity(VCOS_THREAD_T *thread);
++
++/**
++ * \brief Set the thread's cpu affinity.
++ */
++
++VCOS_INLINE_DECL
++void vcos_thread_set_affinity(VCOS_THREAD_T *thread, VCOS_UNSIGNED affinity);
++
++/**
++ * \brief Query whether we are in an interrupt.
++ *
++ * @return 1 if in interrupt context.
++ */
++VCOS_INLINE_DECL
++int vcos_in_interrupt(void);
++
++/**
++ * \brief Sleep a while.
++ *
++ * @param ms Number of milliseconds to sleep for
++ *
++ * This may actually sleep a whole number of ticks.
++ */
++VCOS_INLINE_DECL
++void vcos_sleep(uint32_t ms);
++
++/**
++ * \brief Return the value of the hardware microsecond counter.
++ *
++ */
++VCOS_INLINE_DECL
++uint32_t vcos_getmicrosecs(void);
++
++#define vcos_get_ms() (vcos_getmicrosecs()/1000)
++
++/**
++ * \brief Return a unique identifier for the current process
++ *
++ */
++VCOS_INLINE_DECL
++VCOS_UNSIGNED vcos_process_id_current(void);
++
++/** Relinquish this time slice. */
++VCOS_INLINE_DECL
++void vcos_thread_relinquish(void);
++
++/** Return the name of the given thread.
++ */
++VCOSPRE_ const char * VCOSPOST_ vcos_thread_get_name(const VCOS_THREAD_T *thread);
++
++/** Change preemption. This is almost certainly not what you want, as it won't
++ * work reliably in a multicore system: although you can affect the preemption
++ * on *this* core, you won't affect what's happening on the other core(s).
++ *
++ * It's mainly here to ease migration. If you're using it in new code, you
++ * probably need to think again.
++ *
++ * @param pe New preemption, VCOS_PREEMPT or VCOS_NO_PREEMPT
++ * @return Old value of preemption.
++ */
++VCOS_INLINE_DECL
++VCOS_UNSIGNED vcos_change_preemption(VCOS_UNSIGNED pe);
++
++/** Is a thread still running, or has it exited?
++ *
++ * Note: this exists for some fairly scary code in the video codec tests. Don't
++ * try to use it for anything else, as it may well not do what you expect.
++ *
++ * @param thread thread to query
++ * @return non-zero if thread is running, or zero if it has exited.
++ */
++VCOS_INLINE_DECL
++int vcos_thread_running(VCOS_THREAD_T *thread);
++
++/** Resume a thread.
++ *
++ * @param thread thread to resume
++ */
++VCOS_INLINE_DECL
++void vcos_thread_resume(VCOS_THREAD_T *thread);
++
++/*
++ * Internal APIs - may not always be present and should not be used in
++ * client code.
++ */
++
++extern void _vcos_task_timer_set(void (*pfn)(void*), void *, VCOS_UNSIGNED ms);
++extern void _vcos_task_timer_cancel(void);
++
++#ifdef __cplusplus
++}
++#endif
++#endif
+--- /dev/null
++++ b/drivers/misc/vc04_services/interface/vcos/vcos_thread_attr.h
+@@ -0,0 +1,73 @@
++/*=============================================================================
++Copyright (c) 2009 Broadcom Europe Limited.
++All rights reserved.
++
++FILE DESCRIPTION
++VideoCore OS Abstraction Layer - thread attributes
++=============================================================================*/
++
++#ifndef VCOS_THREAD_ATTR_H
++#define VCOS_THREAD_ATTR_H
++
++#ifdef __cplusplus
++extern "C" {
++#endif
++
++/**
++ * \file
++ *
++ * Attributes for thread creation.
++ *
++ */
++
++/** Initialize thread attribute struct. This call does not allocate memory,
++ * and so cannot fail.
++ *
++ */
++VCOSPRE_ void VCOSPOST_ vcos_thread_attr_init(VCOS_THREAD_ATTR_T *attrs);
++
++/** Set the stack address and size. If not set, a stack will be allocated automatically.
++ *
++ * This can only be set on some platforms. It will always be possible to set the stack
++ * address on VideoCore, but on host platforms, support may well not be available.
++ */
++#if VCOS_CAN_SET_STACK_ADDR
++VCOS_INLINE_DECL
++void vcos_thread_attr_setstack(VCOS_THREAD_ATTR_T *attrs, void *addr, VCOS_UNSIGNED sz);
++#endif
++
++/** Set the stack size. If not set, a default size will be used. Attempting to call this after having
++ * set the stack location with vcos_thread_attr_setstack() will result in undefined behaviour.
++ */
++VCOS_INLINE_DECL
++void vcos_thread_attr_setstacksize(VCOS_THREAD_ATTR_T *attrs, VCOS_UNSIGNED sz);
++
++/** Set the task priority. If not set, a default value will be used.
++ */
++VCOS_INLINE_DECL
++void vcos_thread_attr_setpriority(VCOS_THREAD_ATTR_T *attrs, VCOS_UNSIGNED pri);
++
++/** Set the task cpu affinity. If not set, the default will be used.
++ */
++VCOS_INLINE_DECL
++void vcos_thread_attr_setaffinity(VCOS_THREAD_ATTR_T *attrs, VCOS_UNSIGNED aff);
++
++/** Set the timeslice. If not set the default will be used.
++ */
++VCOS_INLINE_DECL
++void vcos_thread_attr_settimeslice(VCOS_THREAD_ATTR_T *attrs, VCOS_UNSIGNED ts);
++
++/** The thread entry function takes (argc,argv), as per Nucleus, with
++ * argc being 0. This may be withdrawn in a future release and should not
++ * be used in new code.
++ */
++VCOS_INLINE_DECL
++void _vcos_thread_attr_setlegacyapi(VCOS_THREAD_ATTR_T *attrs, VCOS_UNSIGNED legacy);
++
++VCOS_INLINE_DECL
++void vcos_thread_attr_setautostart(VCOS_THREAD_ATTR_T *attrs, VCOS_UNSIGNED autostart);
++
++#ifdef __cplusplus
++}
++#endif
++#endif
+--- /dev/null
++++ b/drivers/misc/vc04_services/interface/vcos/vcos_timer.h
+@@ -0,0 +1,95 @@
++/*=============================================================================
++Copyright (c) 2009 Broadcom Europe Limited.
++All rights reserved.
++
++Project : vcfw
++Module : chip driver
++
++FILE DESCRIPTION
++VideoCore OS Abstraction Layer - timer support
++=============================================================================*/
++
++#ifndef VCOS_TIMER_H
++#define VCOS_TIMER_H
++
++#ifdef __cplusplus
++extern "C" {
++#endif
++
++#include "interface/vcos/vcos_types.h"
++#include "vcos_platform.h"
++
++/** \file vcos_timer.h
++ *
++ * Timers are single shot.
++ *
++ * Timer times are in milliseconds.
++ *
++ * \note that timer callback functions are called from an arbitrary thread
++ * context. The expiration function should do its work as quickly as possible;
++ * blocking should be avoided.
++ *
++ * \note On Windows, the separate function vcos_timer_init() must be called
++ * as timer initialization from DllMain is not possible.
++ */
++
++/** Perform timer subsystem initialization. This function is not needed
++ * on non-Windows platforms but is still present so that it can be
++ * called. On Windows it is needed because vcos_init() gets called
++ * from DLL initialization where it is not possible to create a
++ * time queue (deadlock occurs if you try).
++ *
++ * @return VCOS_SUCCESS on success. VCOS_EEXIST if this has already been called
++ * once. VCOS_ENOMEM if resource allocation failed.
++ */
++VCOSPRE_ VCOS_STATUS_T VCOSPOST_ vcos_timer_init(void);
++
++/** Create a timer in a disabled state.
++ *
++ * The timer is initially disabled.
++ *
++ * @param timer timer handle
++ * @param name name for timer
++ * @param expiration_routine function to call when timer expires
++ * @param context context passed to expiration routine
++ *
++ */
++VCOS_INLINE_DECL
++VCOS_STATUS_T vcos_timer_create(VCOS_TIMER_T *timer,
++ const char *name,
++ void (*expiration_routine)(void *context),
++ void *context);
++
++
++
++/** Start a timer running.
++ *
++ * Timer must be stopped.
++ *
++ * @param timer timer handle
++ * @param delay Delay to wait for, in ms
++ */
++VCOS_INLINE_DECL
++void vcos_timer_set(VCOS_TIMER_T *timer, VCOS_UNSIGNED delay);
++
++/** Stop an already running timer.
++ *
++ * @param timer timer handle
++ */
++VCOS_INLINE_DECL
++void vcos_timer_cancel(VCOS_TIMER_T *timer);
++
++/** Stop a timer and restart it.
++ * @param timer timer handle
++ * @param delay delay in ms
++ */
++VCOS_INLINE_DECL
++void vcos_timer_reset(VCOS_TIMER_T *timer, VCOS_UNSIGNED delay);
++
++VCOS_INLINE_DECL
++void vcos_timer_delete(VCOS_TIMER_T *timer);
++
++#ifdef __cplusplus
++}
++#endif
++#endif
+--- /dev/null
++++ b/drivers/misc/vc04_services/interface/vcos/vcos_types.h
+@@ -0,0 +1,197 @@
++/*=============================================================================
++Copyright (c) 2009 Broadcom Europe Limited.
++All rights reserved.
++
++FILE DESCRIPTION
++VideoCore OS Abstraction Layer - basic types
++=============================================================================*/
++
++#ifndef VCOS_TYPES_H
++#define VCOS_TYPES_H
++
++#define VCOS_VERSION 1
++
++#include "vcos_platform_types.h"
++
++#if !defined(VCOSPRE_) || !defined(VCOSPOST_)
++#error VCOSPRE_ and VCOSPOST_ not defined!
++#endif
++
++/* Redefine these here; this means that existing header files can carry on
++ * using the VCHPOST/VCHPRE macros rather than having huge changes, which
++ * could cause nasty merge problems.
++ */
++#ifndef VCHPOST_
++#define VCHPOST_ VCOSPOST_
++#endif
++#ifndef VCHPRE_
++#define VCHPRE_ VCOSPRE_
++#endif
++
++/** Entry function for a lowlevel thread.
++ *
++ * Returns void for consistency with Nucleus/ThreadX.
++ */
++typedef void (*VCOS_LLTHREAD_ENTRY_FN_T)(void *);
++
++/** Thread entry point. Returns a void* for consistency
++ * with pthreads.
++ */
++typedef void *(*VCOS_THREAD_ENTRY_FN_T)(void*);
++
++
++/* Error return codes - chosen to be similar to errno values */
++typedef enum
++{
++ VCOS_SUCCESS,
++ VCOS_EAGAIN,
++ VCOS_ENOENT,
++ VCOS_ENOSPC,
++ VCOS_EINVAL,
++ VCOS_EACCESS,
++ VCOS_ENOMEM,
++ VCOS_ENOSYS,
++ VCOS_EEXIST,
++ VCOS_ENXIO,
++ VCOS_EINTR
++} VCOS_STATUS_T;
++
++/* Some compilers (MetaWare) won't inline with -g turned on, which then results
++ * in a lot of code bloat. To overcome this, inline functions are forward declared
++ * with the prefix VCOS_INLINE_DECL, and implemented with the prefix VCOS_INLINE_IMPL.
++ *
++ * That then means that in a release build, "static inline" can be used in the obvious
++ * way, but in a debug build the implementations can be skipped in all but one file,
++ * by using VCOS_INLINE_BODIES.
++ *
++ * VCOS_INLINE_DECL - put this at the start of an inline forward declaration of a VCOS
++ * function.
++ *
++ * VCOS_INLINE_IMPL - put this at the start of an inlined implementation of a VCOS
++ * function.
++ *
++ */
++
++/* VCOS_EXPORT - it turns out that in some circumstances we need the implementation of
++ * a function even if it is usually inlined.
++ *
++ * In particular, if we have a codec that is usually provided in object form, if it
++ * was built for a debug build it will be full of calls to vcos_XXX(). If this is used
++ * in a *release* build, then there won't be any of these calls around in the main image
++ * as they will all have been inlined. The problem also exists for vcos functions called
++ * from assembler.
++ *
++ * VCOS_EXPORT ensures that the named function will be emitted as a regular (not static-inline)
++ * function inside vcos_<platform>.c so that it can be linked against. Doing this for every
++ * VCOS function would be a bit code-bloat-tastic, so it is only done for those that need it.
++ *
++ */
++
++#ifdef __cplusplus
++#define _VCOS_INLINE inline
++#else
++#define _VCOS_INLINE __inline
++#endif
++
++#if defined(NDEBUG)
++
++#ifdef __GNUC__
++# define VCOS_INLINE_DECL extern __inline__
++# define VCOS_INLINE_IMPL static __inline__
++#else
++# define VCOS_INLINE_DECL static _VCOS_INLINE /* declare a func */
++# define VCOS_INLINE_IMPL static _VCOS_INLINE /* implement a func inline */
++#endif
++
++# if defined(VCOS_WANT_IMPL)
++# define VCOS_EXPORT
++# else
++# define VCOS_EXPORT VCOS_INLINE_IMPL
++# endif /* VCOS_WANT_IMPL */
++
++#define VCOS_INLINE_BODIES
++
++#else /* NDEBUG */
++
++#if !defined(VCOS_INLINE_DECL)
++ #define VCOS_INLINE_DECL extern
++#endif
++#if !defined(VCOS_INLINE_IMPL)
++ #define VCOS_INLINE_IMPL
++#endif
++#define VCOS_EXPORT VCOS_INLINE_IMPL
++#endif
++
++#define VCOS_STATIC_INLINE static _VCOS_INLINE
++
++#if defined(__HIGHC__) || defined(__HIGHC_ANSI__)
++#define _VCOS_METAWARE
++#endif
++
++/** It seems that __FUNCTION__ isn't standard!
++ */
++#if __STDC_VERSION__ < 199901L
++# if __GNUC__ >= 2 || defined(__VIDEOCORE__)
++# define VCOS_FUNCTION __FUNCTION__
++# else
++# define VCOS_FUNCTION "<unknown>"
++# endif
++#else
++# define VCOS_FUNCTION __func__
++#endif
++
++#define _VCOS_MS_PER_TICK (1000/VCOS_TICKS_PER_SECOND)
++
++/* Convert a number of milliseconds to a tick count. Internal use only - fails to
++ * convert VCOS_SUSPEND correctly.
++ */
++#define _VCOS_MS_TO_TICKS(ms) (((ms)+_VCOS_MS_PER_TICK-1)/_VCOS_MS_PER_TICK)
++
++#define VCOS_TICKS_TO_MS(ticks) ((ticks) * _VCOS_MS_PER_TICK)
++
++/** VCOS version of DATESTR, from pcdisk.h. Used by the hostreq service.
++ */
++typedef struct vcos_datestr
++{
++ uint8_t cmsec; /**< Centesimal mili second */
++ uint16_t date; /**< Date */
++ uint16_t time; /**< Time */
++
++} VCOS_DATESTR;
++
++/* Compile-time assert - declares invalid array length if condition
++ * not met, or array of length one if OK.
++ */
++#define VCOS_CASSERT(e) extern char vcos_compile_time_check[1/(e)]
++
++#define vcos_min(x,y) ((x) < (y) ? (x) : (y))
++#define vcos_max(x,y) ((x) > (y) ? (x) : (y))
++
++/** Return the count of an array. FIXME: under gcc we could make
++ * this report an error for pointers using __builtin_types_compatible().
++ */
++#define vcos_countof(x) (sizeof((x)) / sizeof((x)[0]))
++
++/* for backward compatibility */
++#define countof(x) (sizeof((x)) / sizeof((x)[0]))
++
++#define VCOS_ALIGN_DOWN(p,n) (((ptrdiff_t)(p)) & ~((n)-1))
++#define VCOS_ALIGN_UP(p,n) VCOS_ALIGN_DOWN((ptrdiff_t)(p)+(n)-1,(n))
++
++/** bool_t is not a POSIX type so cannot rely on it. Define it here.
++ * It's not even defined in stdbool.h.
++ */
++typedef int32_t vcos_bool_t;
++typedef int32_t vcos_fourcc_t;
++
++#define VCOS_FALSE 0
++#define VCOS_TRUE (!VCOS_FALSE)
++
++/** Mark unused arguments to keep compilers quiet */
++#define vcos_unused(x) (void)(x)
++
++/** For backward compatibility */
++typedef vcos_fourcc_t fourcc_t;
++typedef vcos_fourcc_t FOURCC_T;
++
++#endif
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