--- a/arch/mips/Kconfig +++ b/arch/mips/Kconfig @@ -120,6 +120,19 @@ config BCM63XX help Support for BCM63XX based boards +config ATHEROS_AR231X + bool "Atheros 231x/531x SoC support" + select CEVT_R4K + select CSRC_R4K + select DMA_NONCOHERENT + select IRQ_CPU + select SYS_HAS_CPU_MIPS32_R1 + select SYS_SUPPORTS_BIG_ENDIAN + select SYS_SUPPORTS_32BIT_KERNEL + select ARCH_REQUIRE_GPIOLIB + help + Support for AR231x and AR531x based boards + config MIPS_COBALT bool "Cobalt Server" select CEVT_R4K @@ -813,6 +826,7 @@ config NLM_XLP_BOARD endchoice +source "arch/mips/ar231x/Kconfig" source "arch/mips/alchemy/Kconfig" source "arch/mips/ath79/Kconfig" source "arch/mips/bcm47xx/Kconfig" --- a/arch/mips/Kbuild.platforms +++ b/arch/mips/Kbuild.platforms @@ -6,6 +6,7 @@ platforms += ath79 platforms += bcm47xx platforms += bcm63xx platforms += cavium-octeon +platforms += ar231x platforms += cobalt platforms += dec platforms += emma --- /dev/null +++ b/arch/mips/ar231x/Platform @@ -0,0 +1,6 @@ +# +# Atheros AR5312/AR2312 WiSoC +# +platform-$(CONFIG_ATHEROS_AR231X) += ar231x/ +cflags-$(CONFIG_ATHEROS_AR231X) += -I$(srctree)/arch/mips/include/asm/mach-ar231x +load-$(CONFIG_ATHEROS_AR231X) += 0xffffffff80041000 --- /dev/null +++ b/arch/mips/ar231x/Kconfig @@ -0,0 +1,16 @@ +config ATHEROS_AR5312 + bool "Atheros 5312/2312+ support" + depends on ATHEROS_AR231X + default y + +config ATHEROS_AR2315 + bool "Atheros 2315+ support" + depends on ATHEROS_AR231X + select DMA_NONCOHERENT + select CEVT_R4K + select CSRC_R4K + select IRQ_CPU + select SYS_HAS_CPU_MIPS32_R1 + select SYS_SUPPORTS_32BIT_KERNEL + select SYS_SUPPORTS_BIG_ENDIAN + default y --- /dev/null +++ b/arch/mips/ar231x/Makefile @@ -0,0 +1,13 @@ +# +# This file is subject to the terms and conditions of the GNU General Public +# License. See the file "COPYING" in the main directory of this archive +# for more details. +# +# Copyright (C) 2006 FON Technology, SL. +# Copyright (C) 2006 Imre Kaloz <kaloz@openwrt.org> +# Copyright (C) 2006-2009 Felix Fietkau <nbd@openwrt.org> +# + +obj-y += board.o prom.o devices.o +obj-$(CONFIG_ATHEROS_AR5312) += ar5312.o +obj-$(CONFIG_ATHEROS_AR2315) += ar2315.o --- /dev/null +++ b/arch/mips/ar231x/board.c @@ -0,0 +1,259 @@ +/* + * This file is subject to the terms and conditions of the GNU General Public + * License. See the file "COPYING" in the main directory of this archive + * for more details. + * + * Copyright (C) 2003 Atheros Communications, Inc., All Rights Reserved. + * Copyright (C) 2006 FON Technology, SL. + * Copyright (C) 2006 Imre Kaloz <kaloz@openwrt.org> + * Copyright (C) 2006-2009 Felix Fietkau <nbd@openwrt.org> + */ + +#include <generated/autoconf.h> +#include <linux/init.h> +#include <linux/module.h> +#include <linux/types.h> +#include <linux/string.h> +#include <linux/platform_device.h> +#include <linux/kernel.h> +#include <linux/random.h> +#include <linux/etherdevice.h> +#include <linux/irq.h> +#include <asm/irq_cpu.h> +#include <asm/reboot.h> +#include <asm/io.h> + +#include <ar231x_platform.h> +#include "devices.h" +#include "ar5312.h" +#include "ar2315.h" + +void (*ar231x_irq_dispatch)(void); + +static inline bool +check_radio_magic(u8 *addr) +{ + addr += 0x7a; /* offset for flash magic */ + if ((addr[0] == 0x5a) && (addr[1] == 0xa5)) { + return 1; + } + return 0; +} + +static inline bool +check_board_data(u8 *flash_limit, u8 *addr, bool broken) +{ + /* config magic found */ + if (*((u32 *)addr) == AR531X_BD_MAGIC) + return 1; + + if (!broken) + return 0; + + if (check_radio_magic(addr + 0xf8)) + ar231x_board.radio = addr + 0xf8; + if ((addr < flash_limit + 0x10000) && + check_radio_magic(addr + 0x10000)) + ar231x_board.radio = addr + 0x10000; + + if (ar231x_board.radio) { + /* broken board data detected, use radio data to find the offset, + * user will fix this */ + return 1; + } + return 0; +} + +static u8 * +find_board_config(u8 *flash_limit, bool broken) +{ + u8 *addr; + int found = 0; + + for (addr = flash_limit - 0x1000; + addr >= flash_limit - 0x30000; + addr -= 0x1000) { + + if (check_board_data(flash_limit, addr, broken)) { + found = 1; + break; + } + } + + if (!found) + addr = NULL; + + return addr; +} + +static u8 * +find_radio_config(u8 *flash_limit, u8 *board_config) +{ + int found; + u8 *radio_config; + + /* + * Now find the start of Radio Configuration data, using heuristics: + * Search forward from Board Configuration data by 0x1000 bytes + * at a time until we find non-0xffffffff. + */ + found = 0; + for (radio_config = board_config + 0x1000; + (radio_config < flash_limit); + radio_config += 0x1000) { + if ((*(u32 *)radio_config != 0xffffffff) && + check_radio_magic(radio_config)) { + found = 1; + break; + } + } + + /* AR2316 relocates radio config to new location */ + if (!found) { + for (radio_config = board_config + 0xf8; + (radio_config < flash_limit - 0x1000 + 0xf8); + radio_config += 0x1000) { + if ((*(u32 *)radio_config != 0xffffffff) && + check_radio_magic(radio_config)) { + found = 1; + break; + } + } + } + + if (!found) { + printk("Could not find Radio Configuration data\n"); + radio_config = 0; + } + + return (u8 *) radio_config; +} + +int __init +ar231x_find_config(u8 *flash_limit) +{ + struct ar231x_boarddata *config; + unsigned int rcfg_size; + int broken_boarddata = 0; + u8 *bcfg, *rcfg; + u8 *board_data; + u8 *radio_data; + u8 *mac_addr; + u32 offset; + + ar231x_board.config = NULL; + ar231x_board.radio = NULL; + /* Copy the board and radio data to RAM, because accessing the mapped + * memory of the flash directly after booting is not safe */ + + /* Try to find valid board and radio data */ + bcfg = find_board_config(flash_limit, false); + + /* If that fails, try to at least find valid radio data */ + if (!bcfg) { + bcfg = find_board_config(flash_limit, true); + broken_boarddata = 1; + } + + if (!bcfg) { + printk(KERN_WARNING "WARNING: No board configuration data found!\n"); + return -ENODEV; + } + + board_data = kzalloc(BOARD_CONFIG_BUFSZ, GFP_KERNEL); + ar231x_board.config = (struct ar231x_boarddata *) board_data; + memcpy(board_data, bcfg, 0x100); + if (broken_boarddata) { + printk(KERN_WARNING "WARNING: broken board data detected\n"); + config = ar231x_board.config; + if (!memcmp(config->enet0_mac, "\x00\x00\x00\x00\x00\x00", 6)) { + printk(KERN_INFO "Fixing up empty mac addresses\n"); + config->resetConfigGpio = 0xffff; + config->sysLedGpio = 0xffff; + random_ether_addr(config->wlan0_mac); + config->wlan0_mac[0] &= ~0x06; + random_ether_addr(config->enet0_mac); + random_ether_addr(config->enet1_mac); + } + } + + + /* Radio config starts 0x100 bytes after board config, regardless + * of what the physical layout on the flash chip looks like */ + + if (ar231x_board.radio) + rcfg = (u8 *) ar231x_board.radio; + else + rcfg = find_radio_config(flash_limit, bcfg); + + if (!rcfg) + return -ENODEV; + + radio_data = board_data + 0x100 + ((rcfg - bcfg) & 0xfff); + ar231x_board.radio = radio_data; + offset = radio_data - board_data; + printk(KERN_INFO "Radio config found at offset 0x%x(0x%x)\n", rcfg - bcfg, offset); + rcfg_size = BOARD_CONFIG_BUFSZ - offset; + memcpy(radio_data, rcfg, rcfg_size); + + mac_addr = &radio_data[0x1d * 2]; + if (is_broadcast_ether_addr(mac_addr)) { + printk(KERN_INFO "Radio MAC is blank; using board-data\n"); + memcpy(mac_addr, ar231x_board.config->wlan0_mac, ETH_ALEN); + } + + return 0; +} + +static void +ar231x_halt(void) +{ + local_irq_disable(); + while (1); +} + +void __init +plat_mem_setup(void) +{ + _machine_halt = ar231x_halt; + pm_power_off = ar231x_halt; + + ar5312_plat_setup(); + ar2315_plat_setup(); + + /* Disable data watchpoints */ + write_c0_watchlo0(0); +} + + +asmlinkage void +plat_irq_dispatch(void) +{ + ar231x_irq_dispatch(); +} + +void __init +plat_time_init(void) +{ + ar5312_time_init(); + ar2315_time_init(); +} + +unsigned int __cpuinit +get_c0_compare_int(void) +{ + return CP0_LEGACY_COMPARE_IRQ; +} + +void __init +arch_init_irq(void) +{ + clear_c0_status(ST0_IM); + mips_cpu_irq_init(); + + /* Initialize interrupt controllers */ + ar5312_irq_init(); + ar2315_irq_init(); +} + + --- /dev/null +++ b/arch/mips/ar231x/prom.c @@ -0,0 +1,37 @@ +/* + * This file is subject to the terms and conditions of the GNU General Public + * License. See the file "COPYING" in the main directory of this archive + * for more details. + * + * Copyright MontaVista Software Inc + * Copyright (C) 2003 Atheros Communications, Inc., All Rights Reserved. + * Copyright (C) 2006 FON Technology, SL. + * Copyright (C) 2006 Imre Kaloz <kaloz@openwrt.org> + * Copyright (C) 2006 Felix Fietkau <nbd@openwrt.org> + */ + +/* + * Prom setup file for ar531x + */ + +#include <linux/init.h> +#include <generated/autoconf.h> +#include <linux/kernel.h> +#include <linux/string.h> +#include <linux/mm.h> +#include <linux/bootmem.h> + +#include <asm/bootinfo.h> +#include <asm/addrspace.h> +#include "ar5312.h" +#include "ar2315.h" + +void __init prom_init(void) +{ + ar5312_prom_init(); + ar2315_prom_init(); +} + +void __init prom_free_prom_memory(void) +{ +} --- /dev/null +++ b/arch/mips/include/asm/mach-ar231x/ar231x_platform.h @@ -0,0 +1,83 @@ +#ifndef __AR531X_PLATFORM_H +#define __AR531X_PLATFORM_H + +/* + * This is board-specific data that is stored in a "fixed" location in flash. + * It is shared across operating systems, so it should not be changed lightly. + * The main reason we need it is in order to extract the ethernet MAC + * address(es). + */ +struct ar231x_boarddata { + u32 magic; /* board data is valid */ +#define AR531X_BD_MAGIC 0x35333131 /* "5311", for all 531x platforms */ + u16 cksum; /* checksum (starting with BD_REV 2) */ + u16 rev; /* revision of this struct */ +#define BD_REV 4 + char boardName[64]; /* Name of board */ + u16 major; /* Board major number */ + u16 minor; /* Board minor number */ + u32 flags; /* Board configuration */ +#define BD_ENET0 0x00000001 /* ENET0 is stuffed */ +#define BD_ENET1 0x00000002 /* ENET1 is stuffed */ +#define BD_UART1 0x00000004 /* UART1 is stuffed */ +#define BD_UART0 0x00000008 /* UART0 is stuffed (dma) */ +#define BD_RSTFACTORY 0x00000010 /* Reset factory defaults stuffed */ +#define BD_SYSLED 0x00000020 /* System LED stuffed */ +#define BD_EXTUARTCLK 0x00000040 /* External UART clock */ +#define BD_CPUFREQ 0x00000080 /* cpu freq is valid in nvram */ +#define BD_SYSFREQ 0x00000100 /* sys freq is set in nvram */ +#define BD_WLAN0 0x00000200 /* Enable WLAN0 */ +#define BD_MEMCAP 0x00000400 /* CAP SDRAM @ memCap for testing */ +#define BD_DISWATCHDOG 0x00000800 /* disable system watchdog */ +#define BD_WLAN1 0x00001000 /* Enable WLAN1 (ar5212) */ +#define BD_ISCASPER 0x00002000 /* FLAG for AR2312 */ +#define BD_WLAN0_2G_EN 0x00004000 /* FLAG for radio0_2G */ +#define BD_WLAN0_5G_EN 0x00008000 /* FLAG for radio0_2G */ +#define BD_WLAN1_2G_EN 0x00020000 /* FLAG for radio0_2G */ +#define BD_WLAN1_5G_EN 0x00040000 /* FLAG for radio0_2G */ + u16 resetConfigGpio; /* Reset factory GPIO pin */ + u16 sysLedGpio; /* System LED GPIO pin */ + + u32 cpuFreq; /* CPU core frequency in Hz */ + u32 sysFreq; /* System frequency in Hz */ + u32 cntFreq; /* Calculated C0_COUNT frequency */ + + u8 wlan0_mac[6]; + u8 enet0_mac[6]; + u8 enet1_mac[6]; + + u16 pciId; /* Pseudo PCIID for common code */ + u16 memCap; /* cap bank1 in MB */ + + /* version 3 */ + u8 wlan1_mac[6]; /* (ar5212) */ +}; + +#define BOARD_CONFIG_BUFSZ 0x1000 + +/* + * Platform device information for the Wireless MAC + */ +struct ar231x_board_config { + u16 devid; + + /* board config data */ + struct ar231x_boarddata *config; + + /* radio calibration data */ + const char *radio; +}; + +/* + * Platform device information for the Ethernet MAC + */ +struct ar231x_eth { + u32 reset_base; + u32 reset_mac; + u32 reset_phy; + u32 phy_base; + struct ar231x_board_config *config; + char *macaddr; +}; + +#endif /* __AR531X_PLATFORM_H */ --- /dev/null +++ b/arch/mips/include/asm/mach-ar231x/cpu-feature-overrides.h @@ -0,0 +1,84 @@ +/* + * Atheros SoC specific CPU feature overrides + * + * Copyright (C) 2008 Gabor Juhos <juhosg@openwrt.org> + * + * This file was derived from: include/asm-mips/cpu-features.h + * Copyright (C) 2003, 2004 Ralf Baechle + * Copyright (C) 2004 Maciej W. Rozycki + * + * This program is free software; you can redistribute it and/or modify it + * under the terms of the GNU General Public License version 2 as published + * by the Free Software Foundation. + * + */ +#ifndef __ASM_MACH_ATHEROS_CPU_FEATURE_OVERRIDES_H +#define __ASM_MACH_ATHEROS_CPU_FEATURE_OVERRIDES_H + +/* + * The ATHEROS SoCs have MIPS 4Kc/4KEc core. + */ +#define cpu_has_tlb 1 +#define cpu_has_4kex 1 +#define cpu_has_3k_cache 0 +#define cpu_has_4k_cache 1 +#define cpu_has_tx39_cache 0 +#define cpu_has_sb1_cache 0 +#define cpu_has_fpu 0 +#define cpu_has_32fpr 0 +#define cpu_has_counter 1 +/* #define cpu_has_watch ? */ +/* #define cpu_has_divec ? */ +/* #define cpu_has_vce ? */ +/* #define cpu_has_cache_cdex_p ? */ +/* #define cpu_has_cache_cdex_s ? */ +/* #define cpu_has_prefetch ? */ +/* #define cpu_has_mcheck ? */ +#define cpu_has_ejtag 1 + +#if !defined(CONFIG_ATHEROS_AR5312) +# define cpu_has_llsc 1 +#else +/* + * The MIPS 4Kc V0.9 core in the AR5312/AR2312 have problems with the + * ll/sc instructions. + */ +# define cpu_has_llsc 0 +#endif + +#define cpu_has_mips16 0 +#define cpu_has_mdmx 0 +#define cpu_has_mips3d 0 +#define cpu_has_smartmips 0 + +/* #define cpu_has_vtag_icache ? */ +/* #define cpu_has_dc_aliases ? */ +/* #define cpu_has_ic_fills_f_dc ? */ +/* #define cpu_has_pindexed_dcache ? */ + +/* #define cpu_icache_snoops_remote_store ? */ + +#define cpu_has_mips32r1 1 + +#if !defined(CONFIG_ATHEROS_AR5312) +# define cpu_has_mips32r2 1 +#endif + +#define cpu_has_mips64r1 0 +#define cpu_has_mips64r2 0 + +#define cpu_has_dsp 0 +#define cpu_has_mipsmt 0 + +/* #define cpu_has_nofpuex ? */ +#define cpu_has_64bits 0 +#define cpu_has_64bit_zero_reg 0 +#define cpu_has_64bit_gp_regs 0 +#define cpu_has_64bit_addresses 0 + +/* #define cpu_has_inclusive_pcaches ? */ + +/* #define cpu_dcache_line_size() ? */ +/* #define cpu_icache_line_size() ? */ + +#endif /* __ASM_MACH_ATHEROS_CPU_FEATURE_OVERRIDES_H */ --- /dev/null +++ b/arch/mips/include/asm/mach-ar231x/dma-coherence.h @@ -0,0 +1,76 @@ +/* + * This file is subject to the terms and conditions of the GNU General Public + * License. See the file "COPYING" in the main directory of this archive + * for more details. + * + * Copyright (C) 2006 Ralf Baechle <ralf@linux-mips.org> + * Copyright (C) 2007 Felix Fietkau <nbd@openwrt.org> + * + */ +#ifndef __ASM_MACH_GENERIC_DMA_COHERENCE_H +#define __ASM_MACH_GENERIC_DMA_COHERENCE_H + +#define PCI_DMA_OFFSET 0x20000000 + +#include <linux/device.h> + +static inline dma_addr_t ar231x_dev_offset(struct device *dev) +{ +#ifdef CONFIG_PCI + extern struct bus_type pci_bus_type; + + if (dev && dev->bus == &pci_bus_type) + return PCI_DMA_OFFSET; + else +#endif + return 0; +} + +static inline dma_addr_t plat_map_dma_mem(struct device *dev, void *addr, size_t size) +{ + return virt_to_phys(addr) + ar231x_dev_offset(dev); +} + +static inline dma_addr_t plat_map_dma_mem_page(struct device *dev, struct page *page) +{ + return page_to_phys(page) + ar231x_dev_offset(dev); +} + +static inline unsigned long plat_dma_addr_to_phys(struct device *dev, + dma_addr_t dma_addr) +{ + return dma_addr - ar231x_dev_offset(dev); +} + +static inline void plat_unmap_dma_mem(struct device *dev, dma_addr_t dma_addr, + size_t size, enum dma_data_direction direction) +{ +} + +static inline int plat_dma_supported(struct device *dev, u64 mask) +{ + return 1; +} + +static inline void plat_extra_sync_for_device(struct device *dev) +{ + return; +} + +static inline int plat_dma_mapping_error(struct device *dev, + dma_addr_t dma_addr) +{ + return 0; +} + +static inline int plat_device_is_coherent(struct device *dev) +{ +#ifdef CONFIG_DMA_COHERENT + return 1; +#endif +#ifdef CONFIG_DMA_NONCOHERENT + return 0; +#endif +} + +#endif /* __ASM_MACH_GENERIC_DMA_COHERENCE_H */ --- /dev/null +++ b/arch/mips/include/asm/mach-ar231x/gpio.h @@ -0,0 +1,28 @@ +#ifndef _ATHEROS_GPIO_H_ +#define _ATHEROS_GPIO_H_ + +#include <ar231x.h> + +#define gpio_get_value __gpio_get_value +#define gpio_set_value __gpio_set_value +#define gpio_cansleep __gpio_cansleep + +/* + * Wrappers for the generic GPIO layer + */ + +/* not sure if these are used? */ + +/* Returns IRQ to attach for gpio. Unchecked function */ +static inline int gpio_to_irq(unsigned gpio) { + return AR531X_GPIO_IRQ(gpio); +} + +/* Returns gpio for IRQ attached. Unchecked function */ +static inline int irq_to_gpio(unsigned irq) { + return (irq - (AR531X_GPIO_IRQ(0))); +} + +#include <asm-generic/gpio.h> /* cansleep wrappers */ + +#endif --- /dev/null +++ b/arch/mips/include/asm/mach-ar231x/reset.h @@ -0,0 +1,6 @@ +#ifndef __AR531X_RESET_H +#define __AR531X_RESET_H + +void ar531x_disable_reset_button(void); + +#endif /* __AR531X_RESET_H */ --- /dev/null +++ b/arch/mips/include/asm/mach-ar231x/war.h @@ -0,0 +1,25 @@ +/* + * This file is subject to the terms and conditions of the GNU General Public + * License. See the file "COPYING" in the main directory of this archive + * for more details. + * + * Copyright (C) 2008 Felix Fietkau <nbd@openwrt.org> + */ +#ifndef __ASM_MIPS_MACH_ATHEROS_WAR_H +#define __ASM_MIPS_MACH_ATHEROS_WAR_H + +#define R4600_V1_INDEX_ICACHEOP_WAR 0 +#define R4600_V1_HIT_CACHEOP_WAR 0 +#define R4600_V2_HIT_CACHEOP_WAR 0 +#define R5432_CP0_INTERRUPT_WAR 0 +#define BCM1250_M3_WAR 0 +#define SIBYTE_1956_WAR 0 +#define MIPS4K_ICACHE_REFILL_WAR 0 +#define MIPS_CACHE_SYNC_WAR 0 +#define TX49XX_ICACHE_INDEX_INV_WAR 0 +#define RM9000_CDEX_SMP_WAR 0 +#define ICACHE_REFILLS_WORKAROUND_WAR 0 +#define R10000_LLSC_WAR 0 +#define MIPS34K_MISSED_ITLB_WAR 0 + +#endif /* __ASM_MIPS_MACH_ATHEROS_WAR_H */ --- /dev/null +++ b/arch/mips/include/asm/mach-ar231x/ar2315_regs.h @@ -0,0 +1,580 @@ +/* + * Register definitions for AR2315+ + * + * This file is subject to the terms and conditions of the GNU General Public + * License. See the file "COPYING" in the main directory of this archive + * for more details. + * + * Copyright (C) 2003 Atheros Communications, Inc., All Rights Reserved. + * Copyright (C) 2006 FON Technology, SL. + * Copyright (C) 2006 Imre Kaloz <kaloz@openwrt.org> + * Copyright (C) 2006-2008 Felix Fietkau <nbd@openwrt.org> + */ + +#ifndef __AR2315_REG_H +#define __AR2315_REG_H + +/* + * IRQs + */ +#define AR2315_IRQ_MISC_INTRS MIPS_CPU_IRQ_BASE+2 /* C0_CAUSE: 0x0400 */ +#define AR2315_IRQ_WLAN0_INTRS MIPS_CPU_IRQ_BASE+3 /* C0_CAUSE: 0x0800 */ +#define AR2315_IRQ_ENET0_INTRS MIPS_CPU_IRQ_BASE+4 /* C0_CAUSE: 0x1000 */ +#define AR2315_IRQ_LCBUS_PCI MIPS_CPU_IRQ_BASE+5 /* C0_CAUSE: 0x2000 */ +#define AR2315_IRQ_WLAN0_POLL MIPS_CPU_IRQ_BASE+6 /* C0_CAUSE: 0x4000 */ + +/* + * Address map + */ +#define AR2315_SPI_READ 0x08000000 /* SPI FLASH */ +#define AR2315_WLAN0 0x10000000 /* Wireless MMR */ +#define AR2315_PCI 0x10100000 /* PCI MMR */ +#define AR2315_SDRAMCTL 0x10300000 /* SDRAM MMR */ +#define AR2315_LOCAL 0x10400000 /* LOCAL BUS MMR */ +#define AR2315_ENET0 0x10500000 /* ETHERNET MMR */ +#define AR2315_DSLBASE 0x11000000 /* RESET CONTROL MMR */ +#define AR2315_UART0 0x11100003 /* UART MMR */ +#define AR2315_SPI 0x11300000 /* SPI FLASH MMR */ +#define AR2315_PCIEXT 0x80000000 /* pci external */ + +/* + * Reset Register + */ +#define AR2315_COLD_RESET (AR2315_DSLBASE + 0x0000) + +#define AR2315_RESET_COLD_AHB 0x00000001 +#define AR2315_RESET_COLD_APB 0x00000002 +#define AR2315_RESET_COLD_CPU 0x00000004 +#define AR2315_RESET_COLD_CPUWARM 0x00000008 +#define AR2315_RESET_SYSTEM (RESET_COLD_CPU | RESET_COLD_APB | RESET_COLD_AHB) /* full system */ +#define AR2317_RESET_SYSTEM 0x00000010 + + +#define AR2315_RESET (AR2315_DSLBASE + 0x0004) + +#define AR2315_RESET_WARM_WLAN0_MAC 0x00000001 /* warm reset WLAN0 MAC */ +#define AR2315_RESET_WARM_WLAN0_BB 0x00000002 /* warm reset WLAN0 BaseBand */ +#define AR2315_RESET_MPEGTS_RSVD 0x00000004 /* warm reset MPEG-TS */ +#define AR2315_RESET_PCIDMA 0x00000008 /* warm reset PCI ahb/dma */ +#define AR2315_RESET_MEMCTL 0x00000010 /* warm reset memory controller */ +#define AR2315_RESET_LOCAL 0x00000020 /* warm reset local bus */ +#define AR2315_RESET_I2C_RSVD 0x00000040 /* warm reset I2C bus */ +#define AR2315_RESET_SPI 0x00000080 /* warm reset SPI interface */ +#define AR2315_RESET_UART0 0x00000100 /* warm reset UART0 */ +#define AR2315_RESET_IR_RSVD 0x00000200 /* warm reset IR interface */ +#define AR2315_RESET_EPHY0 0x00000400 /* cold reset ENET0 phy */ +#define AR2315_RESET_ENET0 0x00000800 /* cold reset ENET0 mac */ + +/* + * AHB master arbitration control + */ +#define AR2315_AHB_ARB_CTL (AR2315_DSLBASE + 0x0008) + +#define AR2315_ARB_CPU 0x00000001 /* CPU, default */ +#define AR2315_ARB_WLAN 0x00000002 /* WLAN */ +#define AR2315_ARB_MPEGTS_RSVD 0x00000004 /* MPEG-TS */ +#define AR2315_ARB_LOCAL 0x00000008 /* LOCAL */ +#define AR2315_ARB_PCI 0x00000010 /* PCI */ +#define AR2315_ARB_ETHERNET 0x00000020 /* Ethernet */ +#define AR2315_ARB_RETRY 0x00000100 /* retry policy, debug only */ + +/* + * Config Register + */ +#define AR2315_ENDIAN_CTL (AR2315_DSLBASE + 0x000c) + +#define AR2315_CONFIG_AHB 0x00000001 /* EC - AHB bridge endianess */ +#define AR2315_CONFIG_WLAN 0x00000002 /* WLAN byteswap */ +#define AR2315_CONFIG_MPEGTS_RSVD 0x00000004 /* MPEG-TS byteswap */ +#define AR2315_CONFIG_PCI 0x00000008 /* PCI byteswap */ +#define AR2315_CONFIG_MEMCTL 0x00000010 /* Memory controller endianess */ +#define AR2315_CONFIG_LOCAL 0x00000020 /* Local bus byteswap */ +#define AR2315_CONFIG_ETHERNET 0x00000040 /* Ethernet byteswap */ + +#define AR2315_CONFIG_MERGE 0x00000200 /* CPU write buffer merge */ +#define AR2315_CONFIG_CPU 0x00000400 /* CPU big endian */ +#define AR2315_CONFIG_PCIAHB 0x00000800 +#define AR2315_CONFIG_PCIAHB_BRIDGE 0x00001000 +#define AR2315_CONFIG_SPI 0x00008000 /* SPI byteswap */ +#define AR2315_CONFIG_CPU_DRAM 0x00010000 +#define AR2315_CONFIG_CPU_PCI 0x00020000 +#define AR2315_CONFIG_CPU_MMR 0x00040000 +#define AR2315_CONFIG_BIG 0x00000400 + + +/* + * NMI control + */ +#define AR2315_NMI_CTL (AR2315_DSLBASE + 0x0010) + +#define AR2315_NMI_EN 1 + +/* + * Revision Register - Initial value is 0x3010 (WMAC 3.0, AR531X 1.0). + */ +#define AR2315_SREV (AR2315_DSLBASE + 0x0014) + +#define AR2315_REV_MAJ 0x00f0 +#define AR2315_REV_MAJ_S 4 +#define AR2315_REV_MIN 0x000f +#define AR2315_REV_MIN_S 0 +#define AR2315_REV_CHIP (AR2315_REV_MAJ|AR2315_REV_MIN) + +/* + * Interface Enable + */ +#define AR2315_IF_CTL (AR2315_DSLBASE + 0x0018) + +#define AR2315_IF_MASK 0x00000007 +#define AR2315_IF_DISABLED 0 +#define AR2315_IF_PCI 1 +#define AR2315_IF_TS_LOCAL 2 +#define AR2315_IF_ALL 3 /* only for emulation with separate pins */ +#define AR2315_IF_LOCAL_HOST 0x00000008 +#define AR2315_IF_PCI_HOST 0x00000010 +#define AR2315_IF_PCI_INTR 0x00000020 +#define AR2315_IF_PCI_CLK_MASK 0x00030000 +#define AR2315_IF_PCI_CLK_INPUT 0 +#define AR2315_IF_PCI_CLK_OUTPUT_LOW 1 +#define AR2315_IF_PCI_CLK_OUTPUT_CLK 2 +#define AR2315_IF_PCI_CLK_OUTPUT_HIGH 3 +#define AR2315_IF_PCI_CLK_SHIFT 16 + +/* + * APB Interrupt control + */ + +#define AR2315_ISR (AR2315_DSLBASE + 0x0020) +#define AR2315_IMR (AR2315_DSLBASE + 0x0024) +#define AR2315_GISR (AR2315_DSLBASE + 0x0028) + +#define AR2315_ISR_UART0 0x0001 /* high speed UART */ +#define AR2315_ISR_I2C_RSVD 0x0002 /* I2C bus */ +#define AR2315_ISR_SPI 0x0004 /* SPI bus */ +#define AR2315_ISR_AHB 0x0008 /* AHB error */ +#define AR2315_ISR_APB 0x0010 /* APB error */ +#define AR2315_ISR_TIMER 0x0020 /* timer */ +#define AR2315_ISR_GPIO 0x0040 /* GPIO */ +#define AR2315_ISR_WD 0x0080 /* watchdog */ +#define AR2315_ISR_IR_RSVD 0x0100 /* IR */ + +#define AR2315_GISR_MISC 0x0001 +#define AR2315_GISR_WLAN0 0x0002 +#define AR2315_GISR_MPEGTS_RSVD 0x0004 +#define AR2315_GISR_LOCALPCI 0x0008 +#define AR2315_GISR_WMACPOLL 0x0010 +#define AR2315_GISR_TIMER 0x0020 +#define AR2315_GISR_ETHERNET 0x0040 + +/* + * Interrupt routing from IO to the processor IP bits + * Define our inter mask and level + */ +#define AR2315_INTR_MISCIO SR_IBIT3 +#define AR2315_INTR_WLAN0 SR_IBIT4 +#define AR2315_INTR_ENET0 SR_IBIT5 +#define AR2315_INTR_LOCALPCI SR_IBIT6 +#define AR2315_INTR_WMACPOLL SR_IBIT7 +#define AR2315_INTR_COMPARE SR_IBIT8 + +/* + * Timers + */ +#define AR2315_TIMER (AR2315_DSLBASE + 0x0030) +#define AR2315_RELOAD (AR2315_DSLBASE + 0x0034) +#define AR2315_WD (AR2315_DSLBASE + 0x0038) +#define AR2315_WDC (AR2315_DSLBASE + 0x003c) + +#define AR2315_WDC_IGNORE_EXPIRATION 0x00000000 +#define AR2315_WDC_NMI 0x00000001 /* NMI on watchdog */ +#define AR2315_WDC_RESET 0x00000002 /* reset on watchdog */ + +/* + * CPU Performance Counters + */ +#define AR2315_PERFCNT0 (AR2315_DSLBASE + 0x0048) +#define AR2315_PERFCNT1 (AR2315_DSLBASE + 0x004c) + +#define AR2315_PERF0_DATAHIT 0x0001 /* Count Data Cache Hits */ +#define AR2315_PERF0_DATAMISS 0x0002 /* Count Data Cache Misses */ +#define AR2315_PERF0_INSTHIT 0x0004 /* Count Instruction Cache Hits */ +#define AR2315_PERF0_INSTMISS 0x0008 /* Count Instruction Cache Misses */ +#define AR2315_PERF0_ACTIVE 0x0010 /* Count Active Processor Cycles */ +#define AR2315_PERF0_WBHIT 0x0020 /* Count CPU Write Buffer Hits */ +#define AR2315_PERF0_WBMISS 0x0040 /* Count CPU Write Buffer Misses */ + +#define AR2315_PERF1_EB_ARDY 0x0001 /* Count EB_ARdy signal */ +#define AR2315_PERF1_EB_AVALID 0x0002 /* Count EB_AValid signal */ +#define AR2315_PERF1_EB_WDRDY 0x0004 /* Count EB_WDRdy signal */ +#define AR2315_PERF1_EB_RDVAL 0x0008 /* Count EB_RdVal signal */ +#define AR2315_PERF1_VRADDR 0x0010 /* Count valid read address cycles */ +#define AR2315_PERF1_VWADDR 0x0020 /* Count valid write address cycles */ +#define AR2315_PERF1_VWDATA 0x0040 /* Count valid write data cycles */ + +/* + * AHB Error Reporting. + */ +#define AR2315_AHB_ERR0 (AR2315_DSLBASE + 0x0050) /* error */ +#define AR2315_AHB_ERR1 (AR2315_DSLBASE + 0x0054) /* haddr */ +#define AR2315_AHB_ERR2 (AR2315_DSLBASE + 0x0058) /* hwdata */ +#define AR2315_AHB_ERR3 (AR2315_DSLBASE + 0x005c) /* hrdata */ +#define AR2315_AHB_ERR4 (AR2315_DSLBASE + 0x0060) /* status */ + +#define AHB_ERROR_DET 1 /* AHB Error has been detected, */ + /* write 1 to clear all bits in ERR0 */ +#define AHB_ERROR_OVR 2 /* AHB Error overflow has been detected */ +#define AHB_ERROR_WDT 4 /* AHB Error due to wdt instead of hresp */ + +#define AR2315_PROCERR_HMAST 0x0000000f +#define AR2315_PROCERR_HMAST_DFLT 0 +#define AR2315_PROCERR_HMAST_WMAC 1 +#define AR2315_PROCERR_HMAST_ENET 2 +#define AR2315_PROCERR_HMAST_PCIENDPT 3 +#define AR2315_PROCERR_HMAST_LOCAL 4 +#define AR2315_PROCERR_HMAST_CPU 5 +#define AR2315_PROCERR_HMAST_PCITGT 6 + +#define AR2315_PROCERR_HMAST_S 0 +#define AR2315_PROCERR_HWRITE 0x00000010 +#define AR2315_PROCERR_HSIZE 0x00000060 +#define AR2315_PROCERR_HSIZE_S 5 +#define AR2315_PROCERR_HTRANS 0x00000180 +#define AR2315_PROCERR_HTRANS_S 7 +#define AR2315_PROCERR_HBURST 0x00000e00 +#define AR2315_PROCERR_HBURST_S 9 + +/* + * Clock Control + */ +#define AR2315_PLLC_CTL (AR2315_DSLBASE + 0x0064) +#define AR2315_PLLV_CTL (AR2315_DSLBASE + 0x0068) +#define AR2315_CPUCLK (AR2315_DSLBASE + 0x006c) +#define AR2315_AMBACLK (AR2315_DSLBASE + 0x0070) +#define AR2315_SYNCCLK (AR2315_DSLBASE + 0x0074) +#define AR2315_DSL_SLEEP_CTL (AR2315_DSLBASE + 0x0080) +#define AR2315_DSL_SLEEP_DUR (AR2315_DSLBASE + 0x0084) + +/* PLLc Control fields */ +#define PLLC_REF_DIV_M 0x00000003 +#define PLLC_REF_DIV_S 0 +#define PLLC_FDBACK_DIV_M 0x0000007C +#define PLLC_FDBACK_DIV_S 2 +#define PLLC_ADD_FDBACK_DIV_M 0x00000080 +#define PLLC_ADD_FDBACK_DIV_S 7 +#define PLLC_CLKC_DIV_M 0x0001c000 +#define PLLC_CLKC_DIV_S 14 +#define PLLC_CLKM_DIV_M 0x00700000 +#define PLLC_CLKM_DIV_S 20 + +/* CPU CLK Control fields */ +#define CPUCLK_CLK_SEL_M 0x00000003 +#define CPUCLK_CLK_SEL_S 0 +#define CPUCLK_CLK_DIV_M 0x0000000c +#define CPUCLK_CLK_DIV_S 2 + +/* AMBA CLK Control fields */ +#define AMBACLK_CLK_SEL_M 0x00000003 +#define AMBACLK_CLK_SEL_S 0 +#define AMBACLK_CLK_DIV_M 0x0000000c +#define AMBACLK_CLK_DIV_S 2 + +/* + * GPIO + */ +#define AR2315_GPIO_DI (AR2315_DSLBASE + 0x0088) +#define AR2315_GPIO_DO (AR2315_DSLBASE + 0x0090) +#define AR2315_GPIO_CR (AR2315_DSLBASE + 0x0098) +#define AR2315_GPIO_INT (AR2315_DSLBASE + 0x00a0) + +#define AR2315_GPIO_CR_M(x) (1 << (x)) /* mask for i/o */ +#define AR2315_GPIO_CR_O(x) (1 << (x)) /* output */ +#define AR2315_GPIO_CR_I(x) (0) /* input */ + +#define AR2315_GPIO_INT_S(x) (x) /* interrupt enable */ +#define AR2315_GPIO_INT_M (0x3F) /* mask for int */ +#define AR2315_GPIO_INT_LVL(x) ((x) << 6) /* interrupt level */ +#define AR2315_GPIO_INT_LVL_M ((0x3) << 6) /* mask for int level */ + +#define AR2315_GPIO_INT_MAX_Y 1 /* Maximum value of Y for AR5313_GPIO_INT_* macros */ +#define AR2315_GPIO_INT_LVL_OFF 0 /* Triggerring off */ +#define AR2315_GPIO_INT_LVL_LOW 1 /* Low Level Triggered */ +#define AR2315_GPIO_INT_LVL_HIGH 2 /* High Level Triggered */ +#define AR2315_GPIO_INT_LVL_EDGE 3 /* Edge Triggered */ + +#define AR2315_RESET_GPIO 5 +#define AR2315_NUM_GPIO 22 + +/* + * PCI Clock Control + */ +#define AR2315_PCICLK (AR2315_DSLBASE + 0x00a4) + +#define AR2315_PCICLK_INPUT_M 0x3 +#define AR2315_PCICLK_INPUT_S 0 + +#define AR2315_PCICLK_PLLC_CLKM 0 +#define AR2315_PCICLK_PLLC_CLKM1 1 +#define AR2315_PCICLK_PLLC_CLKC 2 +#define AR2315_PCICLK_REF_CLK 3 + +#define AR2315_PCICLK_DIV_M 0xc +#define AR2315_PCICLK_DIV_S 2 + +#define AR2315_PCICLK_IN_FREQ 0 +#define AR2315_PCICLK_IN_FREQ_DIV_6 1 +#define AR2315_PCICLK_IN_FREQ_DIV_8 2 +#define AR2315_PCICLK_IN_FREQ_DIV_10 3 + +/* + * Observation Control Register + */ +#define AR2315_OCR (AR2315_DSLBASE + 0x00b0) +#define OCR_GPIO0_IRIN 0x0040 +#define OCR_GPIO1_IROUT 0x0080 +#define OCR_GPIO3_RXCLR 0x0200 + +/* + * General Clock Control + */ + +#define AR2315_MISCCLK (AR2315_DSLBASE + 0x00b4) +#define MISCCLK_PLLBYPASS_EN 0x00000001 +#define MISCCLK_PROCREFCLK 0x00000002 + +/* + * SDRAM Controller + * - No read or write buffers are included. + */ +#define AR2315_MEM_CFG (AR2315_SDRAMCTL + 0x00) +#define AR2315_MEM_CTRL (AR2315_SDRAMCTL + 0x0c) +#define AR2315_MEM_REF (AR2315_SDRAMCTL + 0x10) + +#define SDRAM_DATA_WIDTH_M 0x00006000 +#define SDRAM_DATA_WIDTH_S 13 + +#define SDRAM_COL_WIDTH_M 0x00001E00 +#define SDRAM_COL_WIDTH_S 9 + +#define SDRAM_ROW_WIDTH_M 0x000001E0 +#define SDRAM_ROW_WIDTH_S 5 + +#define SDRAM_BANKADDR_BITS_M 0x00000018 +#define SDRAM_BANKADDR_BITS_S 3 + +/* + * SPI Flash Interface Registers + */ + +#define AR2315_SPI_CTL (AR2315_SPI + 0x00) +#define AR2315_SPI_OPCODE (AR2315_SPI + 0x04) +#define AR2315_SPI_DATA (AR2315_SPI + 0x08) + +#define SPI_CTL_START 0x00000100 +#define SPI_CTL_BUSY 0x00010000 +#define SPI_CTL_TXCNT_MASK 0x0000000f +#define SPI_CTL_RXCNT_MASK 0x000000f0 +#define SPI_CTL_TX_RX_CNT_MASK 0x000000ff +#define SPI_CTL_SIZE_MASK 0x00060000 + +#define SPI_CTL_CLK_SEL_MASK 0x03000000 +#define SPI_OPCODE_MASK 0x000000ff + +/* + * PCI Bus Interface Registers + */ +#define AR2315_PCI_1MS_REG (AR2315_PCI + 0x0008) +#define AR2315_PCI_1MS_MASK 0x3FFFF /* # of AHB clk cycles in 1ms */ + +#define AR2315_PCI_MISC_CONFIG (AR2315_PCI + 0x000c) +#define AR2315_PCIMISC_TXD_EN 0x00000001 /* Enable TXD for fragments */ +#define AR2315_PCIMISC_CFG_SEL 0x00000002 /* mem or config cycles */ +#define AR2315_PCIMISC_GIG_MASK 0x0000000C /* bits 31-30 for pci req */ +#define AR2315_PCIMISC_RST_MODE 0x00000030 +#define AR2315_PCIRST_INPUT 0x00000000 /* 4:5=0 rst is input */ +#define AR2315_PCIRST_LOW 0x00000010 /* 4:5=1 rst to GND */ +#define AR2315_PCIRST_HIGH 0x00000020 /* 4:5=2 rst to VDD */ +#define AR2315_PCIGRANT_EN 0x00000000 /* 6:7=0 early grant en */ +#define AR2315_PCIGRANT_FRAME 0x00000040 /* 6:7=1 grant waits 4 frame */ +#define AR2315_PCIGRANT_IDLE 0x00000080 /* 6:7=2 grant waits 4 idle */ +#define AR2315_PCIGRANT_GAP 0x00000000 /* 6:7=2 grant waits 4 idle */ +#define AR2315_PCICACHE_DIS 0x00001000 /* PCI external access cache disable */ + +#define AR2315_PCI_OUT_TSTAMP (AR2315_PCI + 0x0010) + +#define AR2315_PCI_UNCACHE_CFG (AR2315_PCI + 0x0014) + +#define AR2315_PCI_IN_EN (AR2315_PCI + 0x0100) +#define AR2315_PCI_IN_EN0 0x01 /* Enable chain 0 */ +#define AR2315_PCI_IN_EN1 0x02 /* Enable chain 1 */ +#define AR2315_PCI_IN_EN2 0x04 /* Enable chain 2 */ +#define AR2315_PCI_IN_EN3 0x08 /* Enable chain 3 */ + +#define AR2315_PCI_IN_DIS (AR2315_PCI + 0x0104) +#define AR2315_PCI_IN_DIS0 0x01 /* Disable chain 0 */ +#define AR2315_PCI_IN_DIS1 0x02 /* Disable chain 1 */ +#define AR2315_PCI_IN_DIS2 0x04 /* Disable chain 2 */ +#define AR2315_PCI_IN_DIS3 0x08 /* Disable chain 3 */ + +#define AR2315_PCI_IN_PTR (AR2315_PCI + 0x0200) + +#define AR2315_PCI_OUT_EN (AR2315_PCI + 0x0400) +#define AR2315_PCI_OUT_EN0 0x01 /* Enable chain 0 */ + +#define AR2315_PCI_OUT_DIS (AR2315_PCI + 0x0404) +#define AR2315_PCI_OUT_DIS0 0x01 /* Disable chain 0 */ + +#define AR2315_PCI_OUT_PTR (AR2315_PCI + 0x0408) + +#define AR2315_PCI_INT_STATUS (AR2315_PCI + 0x0500) /* write one to clr */ +#define AR2315_PCI_TXINT 0x00000001 /* Desc In Completed */ +#define AR2315_PCI_TXOK 0x00000002 /* Desc In OK */ +#define AR2315_PCI_TXERR 0x00000004 /* Desc In ERR */ +#define AR2315_PCI_TXEOL 0x00000008 /* Desc In End-of-List */ +#define AR2315_PCI_RXINT 0x00000010 /* Desc Out Completed */ +#define AR2315_PCI_RXOK 0x00000020 /* Desc Out OK */ +#define AR2315_PCI_RXERR 0x00000040 /* Desc Out ERR */ +#define AR2315_PCI_RXEOL 0x00000080 /* Desc Out EOL */ +#define AR2315_PCI_TXOOD 0x00000200 /* Desc In Out-of-Desc */ +#define AR2315_PCI_MASK 0x0000FFFF /* Desc Mask */ +#define AR2315_PCI_EXT_INT 0x02000000 +#define AR2315_PCI_ABORT_INT 0x04000000 + +#define AR2315_PCI_INT_MASK (AR2315_PCI + 0x0504) /* same as INT_STATUS */ + +#define AR2315_PCI_INTEN_REG (AR2315_PCI + 0x0508) +#define AR2315_PCI_INT_DISABLE 0x00 /* disable pci interrupts */ +#define AR2315_PCI_INT_ENABLE 0x01 /* enable pci interrupts */ + +#define AR2315_PCI_HOST_IN_EN (AR2315_PCI + 0x0800) +#define AR2315_PCI_HOST_IN_DIS (AR2315_PCI + 0x0804) +#define AR2315_PCI_HOST_IN_PTR (AR2315_PCI + 0x0810) +#define AR2315_PCI_HOST_OUT_EN (AR2315_PCI + 0x0900) +#define AR2315_PCI_HOST_OUT_DIS (AR2315_PCI + 0x0904) +#define AR2315_PCI_HOST_OUT_PTR (AR2315_PCI + 0x0908) + + +/* + * Local Bus Interface Registers + */ +#define AR2315_LB_CONFIG (AR2315_LOCAL + 0x0000) +#define AR2315_LBCONF_OE 0x00000001 /* =1 OE is low-true */ +#define AR2315_LBCONF_CS0 0x00000002 /* =1 first CS is low-true */ +#define AR2315_LBCONF_CS1 0x00000004 /* =1 2nd CS is low-true */ +#define AR2315_LBCONF_RDY 0x00000008 /* =1 RDY is low-true */ +#define AR2315_LBCONF_WE 0x00000010 /* =1 Write En is low-true */ +#define AR2315_LBCONF_WAIT 0x00000020 /* =1 WAIT is low-true */ +#define AR2315_LBCONF_ADS 0x00000040 /* =1 Adr Strobe is low-true */ +#define AR2315_LBCONF_MOT 0x00000080 /* =0 Intel, =1 Motorola */ +#define AR2315_LBCONF_8CS 0x00000100 /* =1 8 bits CS, 0= 16bits */ +#define AR2315_LBCONF_8DS 0x00000200 /* =1 8 bits Data S, 0=16bits */ +#define AR2315_LBCONF_ADS_EN 0x00000400 /* =1 Enable ADS */ +#define AR2315_LBCONF_ADR_OE 0x00000800 /* =1 Adr cap on OE, WE or DS */ +#define AR2315_LBCONF_ADDT_MUX 0x00001000 /* =1 Adr and Data share bus */ +#define AR2315_LBCONF_DATA_OE 0x00002000 /* =1 Data cap on OE, WE, DS */ +#define AR2315_LBCONF_16DATA 0x00004000 /* =1 Data is 16 bits wide */ +#define AR2315_LBCONF_SWAPDT 0x00008000 /* =1 Byte swap data */ +#define AR2315_LBCONF_SYNC 0x00010000 /* =1 Bus synchronous to clk */ +#define AR2315_LBCONF_INT 0x00020000 /* =1 Intr is low true */ +#define AR2315_LBCONF_INT_CTR0 0x00000000 /* GND high-Z, Vdd is high-Z */ +#define AR2315_LBCONF_INT_CTR1 0x00040000 /* GND drive, Vdd is high-Z */ +#define AR2315_LBCONF_INT_CTR2 0x00080000 /* GND high-Z, Vdd drive */ +#define AR2315_LBCONF_INT_CTR3 0x000C0000 /* GND drive, Vdd drive */ +#define AR2315_LBCONF_RDY_WAIT 0x00100000 /* =1 RDY is negative of WAIT */ +#define AR2315_LBCONF_INT_PULSE 0x00200000 /* =1 Interrupt is a pulse */ +#define AR2315_LBCONF_ENABLE 0x00400000 /* =1 Falcon respond to LB */ + +#define AR2315_LB_CLKSEL (AR2315_LOCAL + 0x0004) +#define AR2315_LBCLK_EXT 0x0001 /* use external clk for lb */ + +#define AR2315_LB_1MS (AR2315_LOCAL + 0x0008) +#define AR2315_LB1MS_MASK 0x3FFFF /* # of AHB clk cycles in 1ms */ + +#define AR2315_LB_MISCCFG (AR2315_LOCAL + 0x000C) +#define AR2315_LBM_TXD_EN 0x00000001 /* Enable TXD for fragments */ +#define AR2315_LBM_RX_INTEN 0x00000002 /* Enable LB ints on RX ready */ +#define AR2315_LBM_MBOXWR_INTEN 0x00000004 /* Enable LB ints on mbox wr */ +#define AR2315_LBM_MBOXRD_INTEN 0x00000008 /* Enable LB ints on mbox rd */ +#define AR2315_LMB_DESCSWAP_EN 0x00000010 /* Byte swap desc enable */ +#define AR2315_LBM_TIMEOUT_MASK 0x00FFFF80 +#define AR2315_LBM_TIMEOUT_SHFT 7 +#define AR2315_LBM_PORTMUX 0x07000000 + + +#define AR2315_LB_RXTSOFF (AR2315_LOCAL + 0x0010) + +#define AR2315_LB_TX_CHAIN_EN (AR2315_LOCAL + 0x0100) +#define AR2315_LB_TXEN_0 0x01 +#define AR2315_LB_TXEN_1 0x02 +#define AR2315_LB_TXEN_2 0x04 +#define AR2315_LB_TXEN_3 0x08 + +#define AR2315_LB_TX_CHAIN_DIS (AR2315_LOCAL + 0x0104) +#define AR2315_LB_TX_DESC_PTR (AR2315_LOCAL + 0x0200) + +#define AR2315_LB_RX_CHAIN_EN (AR2315_LOCAL + 0x0400) +#define AR2315_LB_RXEN 0x01 + +#define AR2315_LB_RX_CHAIN_DIS (AR2315_LOCAL + 0x0404) +#define AR2315_LB_RX_DESC_PTR (AR2315_LOCAL + 0x0408) + +#define AR2315_LB_INT_STATUS (AR2315_LOCAL + 0x0500) +#define AR2315_INT_TX_DESC 0x0001 +#define AR2315_INT_TX_OK 0x0002 +#define AR2315_INT_TX_ERR 0x0004 +#define AR2315_INT_TX_EOF 0x0008 +#define AR2315_INT_RX_DESC 0x0010 +#define AR2315_INT_RX_OK 0x0020 +#define AR2315_INT_RX_ERR 0x0040 +#define AR2315_INT_RX_EOF 0x0080 +#define AR2315_INT_TX_TRUNC 0x0100 +#define AR2315_INT_TX_STARVE 0x0200 +#define AR2315_INT_LB_TIMEOUT 0x0400 +#define AR2315_INT_LB_ERR 0x0800 +#define AR2315_INT_MBOX_WR 0x1000 +#define AR2315_INT_MBOX_RD 0x2000 + +/* Bit definitions for INT MASK are the same as INT_STATUS */ +#define AR2315_LB_INT_MASK (AR2315_LOCAL + 0x0504) + +#define AR2315_LB_INT_EN (AR2315_LOCAL + 0x0508) +#define AR2315_LB_MBOX (AR2315_LOCAL + 0x0600) + +/* + * IR Interface Registers + */ +#define AR2315_IR_PKTDATA (AR2315_IR + 0x0000) + +#define AR2315_IR_PKTLEN (AR2315_IR + 0x07fc) /* 0 - 63 */ + +#define AR2315_IR_CONTROL (AR2315_IR + 0x0800) +#define AR2315_IRCTL_TX 0x00000000 /* use as tranmitter */ +#define AR2315_IRCTL_RX 0x00000001 /* use as receiver */ +#define AR2315_IRCTL_SAMPLECLK_MASK 0x00003ffe /* Sample clk divisor mask */ +#define AR2315_IRCTL_SAMPLECLK_SHFT 1 +#define AR2315_IRCTL_OUTPUTCLK_MASK 0x03ffc000 /* Output clk divisor mask */ +#define AR2315_IRCTL_OUTPUTCLK_SHFT 14 + +#define AR2315_IR_STATUS (AR2315_IR + 0x0804) +#define AR2315_IRSTS_RX 0x00000001 /* receive in progress */ +#define AR2315_IRSTS_TX 0x00000002 /* transmit in progress */ + +#define AR2315_IR_CONFIG (AR2315_IR + 0x0808) +#define AR2315_IRCFG_INVIN 0x00000001 /* invert input polarity */ +#define AR2315_IRCFG_INVOUT 0x00000002 /* invert output polarity */ +#define AR2315_IRCFG_SEQ_START_WIN_SEL 0x00000004 /* 1 => 28, 0 => 7 */ +#define AR2315_IRCFG_SEQ_START_THRESH 0x000000f0 /* */ +#define AR2315_IRCFG_SEQ_END_UNIT_SEL 0x00000100 /* */ +#define AR2315_IRCFG_SEQ_END_UNIT_THRESH 0x00007e00 /* */ +#define AR2315_IRCFG_SEQ_END_WIN_SEL 0x00008000 /* */ +#define AR2315_IRCFG_SEQ_END_WIN_THRESH 0x001f0000 /* */ +#define AR2315_IRCFG_NUM_BACKOFF_WORDS 0x01e00000 /* */ + +#define HOST_PCI_DEV_ID 3 +#define HOST_PCI_MBAR0 0x10000000 +#define HOST_PCI_MBAR1 0x20000000 +#define HOST_PCI_MBAR2 0x30000000 + +#define HOST_PCI_SDRAM_BASEADDR HOST_PCI_MBAR1 +#define PCI_DEVICE_MEM_SPACE 0x800000 + +#endif /* __AR2315_REG_H */ --- /dev/null +++ b/arch/mips/include/asm/mach-ar231x/ar5312_regs.h @@ -0,0 +1,232 @@ +/* + * This file is subject to the terms and conditions of the GNU General Public + * License. See the file "COPYING" in the main directory of this archive + * for more details. + * + * Copyright (C) 2003 Atheros Communications, Inc., All Rights Reserved. + * Copyright (C) 2006 Imre Kaloz <kaloz@openwrt.org> + * Copyright (C) 2006 Felix Fietkau <nbd@openwrt.org> + */ + +#ifndef AR5312_H +#define AR5312_H + +#include <asm/addrspace.h> + +/* + * IRQs + */ + +#define AR5312_IRQ_WLAN0_INTRS MIPS_CPU_IRQ_BASE+2 /* C0_CAUSE: 0x0400 */ +#define AR5312_IRQ_ENET0_INTRS MIPS_CPU_IRQ_BASE+3 /* C0_CAUSE: 0x0800 */ +#define AR5312_IRQ_ENET1_INTRS MIPS_CPU_IRQ_BASE+4 /* C0_CAUSE: 0x1000 */ +#define AR5312_IRQ_WLAN1_INTRS MIPS_CPU_IRQ_BASE+5 /* C0_CAUSE: 0x2000 */ +#define AR5312_IRQ_MISC_INTRS MIPS_CPU_IRQ_BASE+6 /* C0_CAUSE: 0x4000 */ + + +/* Address Map */ +#define AR531X_WLAN0 0x18000000 +#define AR531X_WLAN1 0x18500000 +#define AR531X_ENET0 0x18100000 +#define AR531X_ENET1 0x18200000 +#define AR531X_SDRAMCTL 0x18300000 +#define AR531X_FLASHCTL 0x18400000 +#define AR531X_APBBASE 0x1c000000 +#define AR531X_FLASH 0x1e000000 +#define AR531X_UART0 0xbc000003 /* UART MMR */ + +/* + * AR531X_NUM_ENET_MAC defines the number of ethernet MACs that + * should be considered available. The AR5312 supports 2 enet MACS, + * even though many reference boards only actually use 1 of them + * (i.e. Only MAC 0 is actually connected to an enet PHY or PHY switch. + * The AR2312 supports 1 enet MAC. + */ +#define AR531X_NUM_ENET_MAC 2 + +/* + * Need these defines to determine true number of ethernet MACs + */ +#define AR5212_AR5312_REV2 0x0052 /* AR5312 WMAC (AP31) */ +#define AR5212_AR5312_REV7 0x0057 /* AR5312 WMAC (AP30-040) */ +#define AR5212_AR2313_REV8 0x0058 /* AR2313 WMAC (AP43-030) */ + +/* + * AR531X_NUM_WMAC defines the number of Wireless MACs that\ + * should be considered available. + */ +#define AR531X_NUM_WMAC 2 + +/* Reset/Timer Block Address Map */ +#define AR531X_RESETTMR (AR531X_APBBASE + 0x3000) +#define AR531X_TIMER (AR531X_RESETTMR + 0x0000) /* countdown timer */ +#define AR531X_WD_CTRL (AR531X_RESETTMR + 0x0008) /* watchdog cntrl */ +#define AR531X_WD_TIMER (AR531X_RESETTMR + 0x000c) /* watchdog timer */ +#define AR531X_ISR (AR531X_RESETTMR + 0x0010) /* Intr Status Reg */ +#define AR531X_IMR (AR531X_RESETTMR + 0x0014) /* Intr Mask Reg */ +#define AR531X_RESET (AR531X_RESETTMR + 0x0020) +#define AR5312_CLOCKCTL1 (AR531X_RESETTMR + 0x0064) +#define AR5312_SCRATCH (AR531X_RESETTMR + 0x006c) +#define AR531X_PROCADDR (AR531X_RESETTMR + 0x0070) +#define AR531X_PROC1 (AR531X_RESETTMR + 0x0074) +#define AR531X_DMAADDR (AR531X_RESETTMR + 0x0078) +#define AR531X_DMA1 (AR531X_RESETTMR + 0x007c) +#define AR531X_ENABLE (AR531X_RESETTMR + 0x0080) /* interface enb */ +#define AR531X_REV (AR531X_RESETTMR + 0x0090) /* revision */ + +/* AR531X_WD_CTRL register bit field definitions */ +#define AR531X_WD_CTRL_IGNORE_EXPIRATION 0x0000 +#define AR531X_WD_CTRL_NMI 0x0001 +#define AR531X_WD_CTRL_RESET 0x0002 + +/* AR531X_ISR register bit field definitions */ +#define AR531X_ISR_NONE 0x0000 +#define AR531X_ISR_TIMER 0x0001 +#define AR531X_ISR_AHBPROC 0x0002 +#define AR531X_ISR_AHBDMA 0x0004 +#define AR531X_ISR_GPIO 0x0008 +#define AR531X_ISR_UART0 0x0010 +#define AR531X_ISR_UART0DMA 0x0020 +#define AR531X_ISR_WD 0x0040 +#define AR531X_ISR_LOCAL 0x0080 + +/* AR531X_RESET register bit field definitions */ +#define AR531X_RESET_SYSTEM 0x00000001 /* cold reset full system */ +#define AR531X_RESET_PROC 0x00000002 /* cold reset MIPS core */ +#define AR531X_RESET_WLAN0 0x00000004 /* cold reset WLAN MAC and BB */ +#define AR531X_RESET_EPHY0 0x00000008 /* cold reset ENET0 phy */ +#define AR531X_RESET_EPHY1 0x00000010 /* cold reset ENET1 phy */ +#define AR531X_RESET_ENET0 0x00000020 /* cold reset ENET0 mac */ +#define AR531X_RESET_ENET1 0x00000040 /* cold reset ENET1 mac */ +#define AR531X_RESET_UART0 0x00000100 /* cold reset UART0 (high speed) */ +#define AR531X_RESET_WLAN1 0x00000200 /* cold reset WLAN MAC/BB */ +#define AR531X_RESET_APB 0x00000400 /* cold reset APB (ar5312) */ +#define AR531X_RESET_WARM_PROC 0x00001000 /* warm reset MIPS core */ +#define AR531X_RESET_WARM_WLAN0_MAC 0x00002000 /* warm reset WLAN0 MAC */ +#define AR531X_RESET_WARM_WLAN0_BB 0x00004000 /* warm reset WLAN0 BaseBand */ +#define AR531X_RESET_NMI 0x00010000 /* send an NMI to the processor */ +#define AR531X_RESET_WARM_WLAN1_MAC 0x00020000 /* warm reset WLAN1 mac */ +#define AR531X_RESET_WARM_WLAN1_BB 0x00040000 /* warm reset WLAN1 baseband */ +#define AR531X_RESET_LOCAL_BUS 0x00080000 /* reset local bus */ +#define AR531X_RESET_WDOG 0x00100000 /* last reset was a watchdog */ + +#define AR531X_RESET_WMAC0_BITS \ + AR531X_RESET_WLAN0 |\ + AR531X_RESET_WARM_WLAN0_MAC |\ + AR531X_RESET_WARM_WLAN0_BB + +#define AR531X_RESERT_WMAC1_BITS \ + AR531X_RESET_WLAN1 |\ + AR531X_RESET_WARM_WLAN1_MAC |\ + AR531X_RESET_WARM_WLAN1_BB + +/* AR5312_CLOCKCTL1 register bit field definitions */ +#define AR5312_CLOCKCTL1_PREDIVIDE_MASK 0x00000030 +#define AR5312_CLOCKCTL1_PREDIVIDE_SHIFT 4 +#define AR5312_CLOCKCTL1_MULTIPLIER_MASK 0x00001f00 +#define AR5312_CLOCKCTL1_MULTIPLIER_SHIFT 8 +#define AR5312_CLOCKCTL1_DOUBLER_MASK 0x00010000 + +/* Valid for AR5312 and AR2312 */ +#define AR5312_CLOCKCTL1_PREDIVIDE_MASK 0x00000030 +#define AR5312_CLOCKCTL1_PREDIVIDE_SHIFT 4 +#define AR5312_CLOCKCTL1_MULTIPLIER_MASK 0x00001f00 +#define AR5312_CLOCKCTL1_MULTIPLIER_SHIFT 8 +#define AR5312_CLOCKCTL1_DOUBLER_MASK 0x00010000 + +/* Valid for AR2313 */ +#define AR2313_CLOCKCTL1_PREDIVIDE_MASK 0x00003000 +#define AR2313_CLOCKCTL1_PREDIVIDE_SHIFT 12 +#define AR2313_CLOCKCTL1_MULTIPLIER_MASK 0x001f0000 +#define AR2313_CLOCKCTL1_MULTIPLIER_SHIFT 16 +#define AR2313_CLOCKCTL1_DOUBLER_MASK 0x00000000 + + +/* AR531X_ENABLE register bit field definitions */ +#define AR531X_ENABLE_WLAN0 0x0001 +#define AR531X_ENABLE_ENET0 0x0002 +#define AR531X_ENABLE_ENET1 0x0004 +#define AR531X_ENABLE_UART_AND_WLAN1_PIO 0x0008 /* UART, and WLAN1 PIOs */ +#define AR531X_ENABLE_WLAN1_DMA 0x0010 /* WLAN1 DMAs */ +#define AR531X_ENABLE_WLAN1 \ + (AR531X_ENABLE_UART_AND_WLAN1_PIO | AR531X_ENABLE_WLAN1_DMA) + +/* AR531X_REV register bit field definitions */ +#define AR531X_REV_WMAC_MAJ 0xf000 +#define AR531X_REV_WMAC_MAJ_S 12 +#define AR531X_REV_WMAC_MIN 0x0f00 +#define AR531X_REV_WMAC_MIN_S 8 +#define AR531X_REV_MAJ 0x00f0 +#define AR531X_REV_MAJ_S 4 +#define AR531X_REV_MIN 0x000f +#define AR531X_REV_MIN_S 0 +#define AR531X_REV_CHIP (AR531X_REV_MAJ|AR531X_REV_MIN) + +/* Major revision numbers, bits 7..4 of Revision ID register */ +#define AR531X_REV_MAJ_AR5312 0x4 +#define AR531X_REV_MAJ_AR2313 0x5 + +/* Minor revision numbers, bits 3..0 of Revision ID register */ +#define AR5312_REV_MIN_DUAL 0x0 /* Dual WLAN version */ +#define AR5312_REV_MIN_SINGLE 0x1 /* Single WLAN version */ + +/* AR531X_FLASHCTL register bit field definitions */ +#define FLASHCTL_IDCY 0x0000000f /* Idle cycle turn around time */ +#define FLASHCTL_IDCY_S 0 +#define FLASHCTL_WST1 0x000003e0 /* Wait state 1 */ +#define FLASHCTL_WST1_S 5 +#define FLASHCTL_RBLE 0x00000400 /* Read byte lane enable */ +#define FLASHCTL_WST2 0x0000f800 /* Wait state 2 */ +#define FLASHCTL_WST2_S 11 +#define FLASHCTL_AC 0x00070000 /* Flash address check (added) */ +#define FLASHCTL_AC_S 16 +#define FLASHCTL_AC_128K 0x00000000 +#define FLASHCTL_AC_256K 0x00010000 +#define FLASHCTL_AC_512K 0x00020000 +#define FLASHCTL_AC_1M 0x00030000 +#define FLASHCTL_AC_2M 0x00040000 +#define FLASHCTL_AC_4M 0x00050000 +#define FLASHCTL_AC_8M 0x00060000 +#define FLASHCTL_AC_RES 0x00070000 /* 16MB is not supported */ +#define FLASHCTL_E 0x00080000 /* Flash bank enable (added) */ +#define FLASHCTL_BUSERR 0x01000000 /* Bus transfer error status flag */ +#define FLASHCTL_WPERR 0x02000000 /* Write protect error status flag */ +#define FLASHCTL_WP 0x04000000 /* Write protect */ +#define FLASHCTL_BM 0x08000000 /* Burst mode */ +#define FLASHCTL_MW 0x30000000 /* Memory width */ +#define FLASHCTL_MWx8 0x00000000 /* Memory width x8 */ +#define FLASHCTL_MWx16 0x10000000 /* Memory width x16 */ +#define FLASHCTL_MWx32 0x20000000 /* Memory width x32 (not supported) */ +#define FLASHCTL_ATNR 0x00000000 /* Access type == no retry */ +#define FLASHCTL_ATR 0x80000000 /* Access type == retry every */ +#define FLASHCTL_ATR4 0xc0000000 /* Access type == retry every 4 */ + +/* ARM Flash Controller -- 3 flash banks with either x8 or x16 devices. */ +#define AR531X_FLASHCTL0 (AR531X_FLASHCTL + 0x00) +#define AR531X_FLASHCTL1 (AR531X_FLASHCTL + 0x04) +#define AR531X_FLASHCTL2 (AR531X_FLASHCTL + 0x08) + +/* ARM SDRAM Controller -- just enough to determine memory size */ +#define AR531X_MEM_CFG1 (AR531X_SDRAMCTL + 0x04) +#define MEM_CFG1_AC0 0x00000700 /* bank 0: SDRAM addr check (added) */ +#define MEM_CFG1_AC0_S 8 +#define MEM_CFG1_AC1 0x00007000 /* bank 1: SDRAM addr check (added) */ +#define MEM_CFG1_AC1_S 12 + +/* GPIO Address Map */ +#define AR531X_GPIO (AR531X_APBBASE + 0x2000) +#define AR531X_GPIO_DO (AR531X_GPIO + 0x00) /* output register */ +#define AR531X_GPIO_DI (AR531X_GPIO + 0x04) /* intput register */ +#define AR531X_GPIO_CR (AR531X_GPIO + 0x08) /* control register */ + +/* GPIO Control Register bit field definitions */ +#define AR531X_GPIO_CR_M(x) (1 << (x)) /* mask for i/o */ +#define AR531X_GPIO_CR_O(x) (0 << (x)) /* mask for output */ +#define AR531X_GPIO_CR_I(x) (1 << (x)) /* mask for input */ +#define AR531X_GPIO_CR_INT(x) (1 << ((x)+8)) /* mask for interrupt */ +#define AR531X_GPIO_CR_UART(x) (1 << ((x)+16)) /* uart multiplex */ +#define AR531X_NUM_GPIO 8 + + +#endif + --- /dev/null +++ b/arch/mips/ar231x/ar5312.c @@ -0,0 +1,579 @@ +/* + * This file is subject to the terms and conditions of the GNU General Public + * License. See the file "COPYING" in the main directory of this archive + * for more details. + * + * Copyright (C) 2003 Atheros Communications, Inc., All Rights Reserved. + * Copyright (C) 2006 FON Technology, SL. + * Copyright (C) 2006 Imre Kaloz <kaloz@openwrt.org> + * Copyright (C) 2006-2009 Felix Fietkau <nbd@openwrt.org> + * Copyright (C) 2012 Alexandros C. Couloumbis <alex@ozo.com> + */ + +/* + * Platform devices for Atheros SoCs + */ + +#include <generated/autoconf.h> +#include <linux/init.h> +#include <linux/module.h> +#include <linux/types.h> +#include <linux/string.h> +#include <linux/mtd/physmap.h> +#include <linux/platform_device.h> +#include <linux/kernel.h> +#include <linux/reboot.h> +#include <linux/leds.h> +#include <linux/gpio.h> +#include <asm/bootinfo.h> +#include <asm/reboot.h> +#include <asm/time.h> +#include <linux/irq.h> +#include <asm/io.h> + +#include <ar231x_platform.h> +#include <ar5312_regs.h> +#include <ar231x.h> +#include "devices.h" +#include "ar5312.h" + +static void +ar5312_misc_irq_dispatch(void) +{ + unsigned int ar231x_misc_intrs = ar231x_read_reg(AR531X_ISR) & ar231x_read_reg(AR531X_IMR); + + if (ar231x_misc_intrs & AR531X_ISR_TIMER) { + do_IRQ(AR531X_MISC_IRQ_TIMER); + (void)ar231x_read_reg(AR531X_TIMER); + } else if (ar231x_misc_intrs & AR531X_ISR_AHBPROC) + do_IRQ(AR531X_MISC_IRQ_AHB_PROC); + else if ((ar231x_misc_intrs & AR531X_ISR_UART0)) + do_IRQ(AR531X_MISC_IRQ_UART0); + else if (ar231x_misc_intrs & AR531X_ISR_WD) + do_IRQ(AR531X_MISC_IRQ_WATCHDOG); + else + do_IRQ(AR531X_MISC_IRQ_NONE); +} + +static asmlinkage void +ar5312_irq_dispatch(void) +{ + int pending = read_c0_status() & read_c0_cause(); + + if (pending & CAUSEF_IP2) + do_IRQ(AR5312_IRQ_WLAN0_INTRS); + else if (pending & CAUSEF_IP3) + do_IRQ(AR5312_IRQ_ENET0_INTRS); + else if (pending & CAUSEF_IP4) + do_IRQ(AR5312_IRQ_ENET1_INTRS); + else if (pending & CAUSEF_IP5) + do_IRQ(AR5312_IRQ_WLAN1_INTRS); + else if (pending & CAUSEF_IP6) + ar5312_misc_irq_dispatch(); + else if (pending & CAUSEF_IP7) + do_IRQ(AR531X_IRQ_CPU_CLOCK); +} + + +/* Enable the specified AR531X_MISC_IRQ interrupt */ +static void +ar5312_misc_intr_enable(struct irq_data *d) +{ + unsigned int imr; + + imr = ar231x_read_reg(AR531X_IMR); + imr |= (1 << (d->irq - AR531X_MISC_IRQ_BASE - 1)); + ar231x_write_reg(AR531X_IMR, imr); +} + +/* Disable the specified AR531X_MISC_IRQ interrupt */ +static void +ar5312_misc_intr_disable(struct irq_data *d) +{ + unsigned int imr; + + imr = ar231x_read_reg(AR531X_IMR); + imr &= ~(1 << (d->irq - AR531X_MISC_IRQ_BASE - 1)); + ar231x_write_reg(AR531X_IMR, imr); + ar231x_read_reg(AR531X_IMR); /* flush write buffer */ +} + +static struct irq_chip ar5312_misc_intr_controller = { + .irq_mask = ar5312_misc_intr_disable, + .irq_unmask = ar5312_misc_intr_enable, +}; + + +static irqreturn_t ar5312_ahb_proc_handler(int cpl, void *dev_id) +{ + u32 proc1 = ar231x_read_reg(AR531X_PROC1); + u32 procAddr = ar231x_read_reg(AR531X_PROCADDR); /* clears error state */ + u32 dma1 = ar231x_read_reg(AR531X_DMA1); + u32 dmaAddr = ar231x_read_reg(AR531X_DMAADDR); /* clears error state */ + + printk("AHB interrupt: PROCADDR=0x%8.8x PROC1=0x%8.8x DMAADDR=0x%8.8x DMA1=0x%8.8x\n", + procAddr, proc1, dmaAddr, dma1); + + machine_restart("AHB error"); /* Catastrophic failure */ + return IRQ_HANDLED; +} + + +static struct irqaction ar5312_ahb_proc_interrupt = { + .handler = ar5312_ahb_proc_handler, + .name = "ar5312_ahb_proc_interrupt", +}; + + +static struct irqaction cascade = { + .handler = no_action, + .name = "cascade", +}; + +void __init ar5312_irq_init(void) +{ + int i; + + if (!is_5312()) + return; + + ar231x_irq_dispatch = ar5312_irq_dispatch; + for (i = 0; i < AR531X_MISC_IRQ_COUNT; i++) { + int irq = AR531X_MISC_IRQ_BASE + i; + irq_set_chip_and_handler(irq, &ar5312_misc_intr_controller, + handle_level_irq); + } + setup_irq(AR531X_MISC_IRQ_AHB_PROC, &ar5312_ahb_proc_interrupt); + setup_irq(AR5312_IRQ_MISC_INTRS, &cascade); +} + +static u32 +ar5312_gpio_set_output(u32 mask, u32 val) +{ + u32 reg; + + reg = ar231x_read_reg(AR531X_GPIO_CR); + reg |= mask; + reg &= ~val; + ar231x_write_reg(AR531X_GPIO_CR, reg); + return reg; +} + +static u32 +ar5312_gpio_get(u32 valid_mask) +{ + u32 reg; + reg = ar231x_read_reg(AR531X_GPIO_DI); + reg &= valid_mask; + return reg; +} + +static u32 +ar5312_gpio_set(u32 mask, u32 value) +{ + u32 reg; + reg = ar231x_read_reg(AR531X_GPIO_DO); + reg &= ~mask; + reg |= value; + ar231x_write_reg(AR531X_GPIO_DO, reg); + return reg; +} + +/* + * gpiolib implementations. Original mask based methods preserved + */ +static int +ar5312_gpio_get_value(struct gpio_chip *chip, unsigned gpio) +{ + struct ar231x_gpio_chip *gpch = + container_of(chip, struct ar231x_gpio_chip, chip); + u32 mask = 1 << gpio; + u32 rett; + if (!(gpch->valid_mask & mask)) + return 0; + rett = ar5312_gpio_get(gpch->valid_mask); + return !!(rett & mask); +} + +static void +ar5312_gpio_set_value(struct gpio_chip *chip, unsigned gpio, int value) +{ + struct ar231x_gpio_chip *gpch = + container_of(chip, struct ar231x_gpio_chip, chip); + u32 mask = 1 << gpio; + if (!(gpch->valid_mask & mask)) + return; + ar5312_gpio_set(mask, (!!value) * mask); +} + +static int +ar5312_gpio_direction_input(struct gpio_chip *chip, unsigned gpio) +{ + struct ar231x_gpio_chip *gpch = + container_of(chip, struct ar231x_gpio_chip, chip); + u32 mask = 1 << gpio; + if (!(gpch->valid_mask & mask)) + return -ENXIO; + ar5312_gpio_set_output(mask, 0); + return 0; +} +static int +ar5312_gpio_direction_output(struct gpio_chip *chip, unsigned gpio, int value) +{ + struct ar231x_gpio_chip *gpch = + container_of(chip, struct ar231x_gpio_chip, chip); + u32 mask = 1 << gpio; + if (!(gpch->valid_mask & mask)) + return -ENXIO; + ar5312_gpio_set_output(mask, mask); + ar5312_gpio_set(mask, (!!value) * mask); + return 0; +} + +static struct ar231x_gpio_chip ar5312_gpio_chip = { + .valid_mask = (1 << 22) - 1, + .chip = { + .label = "ar5312-gpio", + .direction_input = ar5312_gpio_direction_input, + .direction_output = ar5312_gpio_direction_output, + .set = ar5312_gpio_set_value, + .get = ar5312_gpio_get_value, + .base = 0, + .ngpio = AR531X_GPIO_IRQ_COUNT, // 22 + } +}; + +// end of gpiolib + +static struct physmap_flash_data ar5312_flash_data = { + .width = 2, +}; + +static struct resource ar5312_flash_resource = { + .start = AR531X_FLASH, + .end = AR531X_FLASH + 0x800000 - 1, + .flags = IORESOURCE_MEM, +}; + +static struct ar231x_eth ar5312_eth0_data = { + .reset_base = AR531X_RESET, + .reset_mac = AR531X_RESET_ENET0, + .reset_phy = AR531X_RESET_EPHY0, + .phy_base = KSEG1ADDR(AR531X_ENET0), + .config = &ar231x_board, +}; + +static struct ar231x_eth ar5312_eth1_data = { + .reset_base = AR531X_RESET, + .reset_mac = AR531X_RESET_ENET1, + .reset_phy = AR531X_RESET_EPHY1, + .phy_base = KSEG1ADDR(AR531X_ENET1), + .config = &ar231x_board, +}; + +static struct platform_device ar5312_physmap_flash = { + .name = "physmap-flash", + .id = 0, + .dev.platform_data = &ar5312_flash_data, + .resource = &ar5312_flash_resource, + .num_resources = 1, +}; + +#ifdef CONFIG_LEDS_GPIO +static struct gpio_led ar5312_leds[] = { + { .name = "wlan", .gpio = 0, .active_low = 1, }, +}; + +static const struct gpio_led_platform_data ar5312_led_data = { + .num_leds = ARRAY_SIZE(ar5312_leds), + .leds = (void *) ar5312_leds, +}; + +static struct platform_device ar5312_gpio_leds = { + .name = "leds-gpio", + .id = -1, + .dev.platform_data = (void *) &ar5312_led_data, +}; +#endif + +/* + * NB: This mapping size is larger than the actual flash size, + * but this shouldn't be a problem here, because the flash + * will simply be mapped multiple times. + */ +static char __init *ar5312_flash_limit(void) +{ + u32 ctl; + /* + * Configure flash bank 0. + * Assume 8M window size. Flash will be aliased if it's smaller + */ + ctl = FLASHCTL_E | + FLASHCTL_AC_8M | + FLASHCTL_RBLE | + (0x01 << FLASHCTL_IDCY_S) | + (0x07 << FLASHCTL_WST1_S) | + (0x07 << FLASHCTL_WST2_S) | + (ar231x_read_reg(AR531X_FLASHCTL0) & FLASHCTL_MW); + + ar231x_write_reg(AR531X_FLASHCTL0, ctl); + + /* Disable other flash banks */ + ar231x_write_reg(AR531X_FLASHCTL1, + ar231x_read_reg(AR531X_FLASHCTL1) & ~(FLASHCTL_E | FLASHCTL_AC)); + + ar231x_write_reg(AR531X_FLASHCTL2, + ar231x_read_reg(AR531X_FLASHCTL2) & ~(FLASHCTL_E | FLASHCTL_AC)); + + return (char *) KSEG1ADDR(AR531X_FLASH + 0x800000); +} + +int __init ar5312_init_devices(void) +{ + struct ar231x_boarddata *config; + u32 fctl = 0; + u8 *c; + + if (!is_5312()) + return 0; + + /* Locate board/radio config data */ + ar231x_find_config(ar5312_flash_limit()); + config = ar231x_board.config; + + /* AR2313 has CPU minor rev. 10 */ + if ((current_cpu_data.processor_id & 0xff) == 0x0a) + ar231x_devtype = DEV_TYPE_AR2313; + + /* AR2312 shares the same Silicon ID as AR5312 */ + else if (config->flags & BD_ISCASPER) + ar231x_devtype = DEV_TYPE_AR2312; + + /* Everything else is probably AR5312 or compatible */ + else + ar231x_devtype = DEV_TYPE_AR5312; + + /* fixup flash width */ + fctl = ar231x_read_reg(AR531X_FLASHCTL) & FLASHCTL_MW; + switch (fctl) { + case FLASHCTL_MWx16: + ar5312_flash_data.width = 2; + break; + case FLASHCTL_MWx8: + default: + ar5312_flash_data.width = 1; + break; + } + + platform_device_register(&ar5312_physmap_flash); + +#ifdef CONFIG_LEDS_GPIO + ar5312_leds[0].gpio = config->sysLedGpio; + platform_device_register(&ar5312_gpio_leds); +#endif + + /* Fix up MAC addresses if necessary */ + if (!memcmp(config->enet0_mac, "\xff\xff\xff\xff\xff\xff", 6)) + memcpy(config->enet0_mac, config->enet1_mac, 6); + + /* If ENET0 and ENET1 have the same mac address, + * increment the one from ENET1 */ + if (memcmp(config->enet0_mac, config->enet1_mac, 6) == 0) { + c = config->enet1_mac + 5; + while ((c >= config->enet1_mac) && !(++(*c))) + c--; + } + + switch(ar231x_devtype) { + case DEV_TYPE_AR5312: + ar5312_eth0_data.macaddr = config->enet0_mac; + ar231x_add_ethernet(0, KSEG1ADDR(AR531X_ENET0), + AR5312_IRQ_ENET0_INTRS, &ar5312_eth0_data); + + ar5312_eth1_data.macaddr = config->enet1_mac; + ar231x_add_ethernet(1, KSEG1ADDR(AR531X_ENET1), + AR5312_IRQ_ENET1_INTRS, &ar5312_eth1_data); + + if (!ar231x_board.radio) + return 0; + + if (!(config->flags & BD_WLAN0)) + break; + + ar231x_add_wmac(0, AR531X_WLAN0, AR5312_IRQ_WLAN0_INTRS); + break; + /* + * AR2312/3 ethernet uses the PHY of ENET0, but the MAC + * of ENET1. Atheros calls it 'twisted' for a reason :) + */ + case DEV_TYPE_AR2312: + case DEV_TYPE_AR2313: + ar5312_eth1_data.phy_base = ar5312_eth0_data.phy_base; + ar5312_eth1_data.reset_phy = ar5312_eth0_data.reset_phy; + ar5312_eth1_data.macaddr = config->enet0_mac; + ar231x_add_ethernet(0, KSEG1ADDR(AR531X_ENET1), + AR5312_IRQ_ENET1_INTRS, &ar5312_eth1_data); + + if (!ar231x_board.radio) + return 0; + break; + default: + break; + } + + if (config->flags & BD_WLAN1) + ar231x_add_wmac(1, AR531X_WLAN1, AR5312_IRQ_WLAN1_INTRS); + + return 0; +} + + +static void ar5312_restart(char *command) +{ + /* reset the system */ + local_irq_disable(); + while(1) { + ar231x_write_reg(AR531X_RESET, AR531X_RESET_SYSTEM); + } +} + + +/* + * This table is indexed by bits 5..4 of the CLOCKCTL1 register + * to determine the predevisor value. + */ +static int __initdata CLOCKCTL1_PREDIVIDE_TABLE[4] = { 1, 2, 4, 5 }; + + +static int __init +ar5312_cpu_frequency(void) +{ + unsigned int result; + unsigned int predivide_mask, predivide_shift; + unsigned int multiplier_mask, multiplier_shift; + unsigned int clockCtl1, preDivideSelect, preDivisor, multiplier; + unsigned int doubler_mask; + u16 devid; + + /* Trust the bootrom's idea of cpu frequency. */ + if ((result = ar231x_read_reg(AR5312_SCRATCH))) + return result; + + devid = ar231x_read_reg(AR531X_REV); + devid &= AR531X_REV_MAJ; + devid >>= AR531X_REV_MAJ_S; + if (devid == AR531X_REV_MAJ_AR2313) { + predivide_mask = AR2313_CLOCKCTL1_PREDIVIDE_MASK; + predivide_shift = AR2313_CLOCKCTL1_PREDIVIDE_SHIFT; + multiplier_mask = AR2313_CLOCKCTL1_MULTIPLIER_MASK; + multiplier_shift = AR2313_CLOCKCTL1_MULTIPLIER_SHIFT; + doubler_mask = AR2313_CLOCKCTL1_DOUBLER_MASK; + } else { /* AR5312 and AR2312 */ + predivide_mask = AR5312_CLOCKCTL1_PREDIVIDE_MASK; + predivide_shift = AR5312_CLOCKCTL1_PREDIVIDE_SHIFT; + multiplier_mask = AR5312_CLOCKCTL1_MULTIPLIER_MASK; + multiplier_shift = AR5312_CLOCKCTL1_MULTIPLIER_SHIFT; + doubler_mask = AR5312_CLOCKCTL1_DOUBLER_MASK; + } + + /* + * Clocking is derived from a fixed 40MHz input clock. + * + * cpuFreq = InputClock * MULT (where MULT is PLL multiplier) + * sysFreq = cpuFreq / 4 (used for APB clock, serial, + * flash, Timer, Watchdog Timer) + * + * cntFreq = cpuFreq / 2 (use for CPU count/compare) + * + * So, for example, with a PLL multiplier of 5, we have + * + * cpuFreq = 200MHz + * sysFreq = 50MHz + * cntFreq = 100MHz + * + * We compute the CPU frequency, based on PLL settings. + */ + + clockCtl1 = ar231x_read_reg(AR5312_CLOCKCTL1); + preDivideSelect = (clockCtl1 & predivide_mask) >> predivide_shift; + preDivisor = CLOCKCTL1_PREDIVIDE_TABLE[preDivideSelect]; + multiplier = (clockCtl1 & multiplier_mask) >> multiplier_shift; + + if (clockCtl1 & doubler_mask) { + multiplier = multiplier << 1; + } + return (40000000 / preDivisor) * multiplier; +} + +static inline int +ar5312_sys_frequency(void) +{ + return ar5312_cpu_frequency() / 4; +} + +void __init +ar5312_time_init(void) +{ + if (!is_5312()) + return; + + mips_hpt_frequency = ar5312_cpu_frequency() / 2; +} + +int __init +ar5312_gpio_init(void) +{ + int ret; + struct ar231x_gpio_chip *gpch; + gpch = &ar5312_gpio_chip; + ret = gpiochip_add(&gpch->chip); + if (ret) { + printk(KERN_ERR "%s: failed to add gpiochip\n", + gpch->chip.label); + return ret; + } + printk(KERN_INFO "%s: registered %d GPIOs\n", + gpch->chip.label, gpch->chip.ngpio); + return ret; +} + +void __init +ar5312_prom_init(void) +{ + u32 memsize, memcfg, bank0AC, bank1AC; + u32 devid; + + if (!is_5312()) + return; + + /* Detect memory size */ + memcfg = ar231x_read_reg(AR531X_MEM_CFG1); + bank0AC = (memcfg & MEM_CFG1_AC0) >> MEM_CFG1_AC0_S; + bank1AC = (memcfg & MEM_CFG1_AC1) >> MEM_CFG1_AC1_S; + memsize = (bank0AC ? (1 << (bank0AC+1)) : 0) + + (bank1AC ? (1 << (bank1AC+1)) : 0); + memsize <<= 20; + add_memory_region(0, memsize, BOOT_MEM_RAM); + + devid = ar231x_read_reg(AR531X_REV); + devid >>= AR531X_REV_WMAC_MIN_S; + devid &= AR531X_REV_CHIP; + ar231x_board.devid = (u16) devid; + ar5312_gpio_init(); +} + +void __init +ar5312_plat_setup(void) +{ + if (!is_5312()) + return; + + /* Clear any lingering AHB errors */ + ar231x_read_reg(AR531X_PROCADDR); + ar231x_read_reg(AR531X_DMAADDR); + ar231x_write_reg(AR531X_WD_CTRL, AR531X_WD_CTRL_IGNORE_EXPIRATION); + + _machine_restart = ar5312_restart; + ar231x_serial_setup(KSEG1ADDR(AR531X_UART0), ar5312_sys_frequency()); +} + --- /dev/null +++ b/arch/mips/ar231x/ar2315.c @@ -0,0 +1,694 @@ +/* + * This file is subject to the terms and conditions of the GNU General Public + * License. See the file "COPYING" in the main directory of this archive + * for more details. + * + * Copyright (C) 2003 Atheros Communications, Inc., All Rights Reserved. + * Copyright (C) 2006 FON Technology, SL. + * Copyright (C) 2006 Imre Kaloz <kaloz@openwrt.org> + * Copyright (C) 2006 Felix Fietkau <nbd@openwrt.org> + * Copyright (C) 2012 Alexandros C. Couloumbis <alex@ozo.com> + */ + +/* + * Platform devices for Atheros SoCs + */ + +#include <generated/autoconf.h> +#include <linux/init.h> +#include <linux/module.h> +#include <linux/types.h> +#include <linux/string.h> +#include <linux/platform_device.h> +#include <linux/kernel.h> +#include <linux/reboot.h> +#include <linux/delay.h> +#include <linux/leds.h> +#include <linux/gpio.h> +#include <asm/bootinfo.h> +#include <asm/reboot.h> +#include <asm/time.h> +#include <linux/irq.h> +#include <asm/io.h> + +#include <ar231x_platform.h> +#include <ar2315_regs.h> +#include <ar231x.h> +#include "devices.h" +#include "ar2315.h" + +static u32 gpiointmask = 0, gpiointval = 0; + +static inline void ar2315_gpio_irq(void) +{ + u32 pend; + int bit = -1; + + /* only do one gpio interrupt at a time */ + pend = (ar231x_read_reg(AR2315_GPIO_DI) ^ gpiointval) & gpiointmask; + + if (pend) { + bit = fls(pend) - 1; + pend &= ~(1 << bit); + gpiointval ^= (1 << bit); + } + + if (!pend) + ar231x_write_reg(AR2315_ISR, AR2315_ISR_GPIO); + + /* Enable interrupt with edge detection */ + if ((ar231x_read_reg(AR2315_GPIO_CR) & AR2315_GPIO_CR_M(bit)) != AR2315_GPIO_CR_I(bit)) + return; + + if (bit >= 0) + do_IRQ(AR531X_GPIO_IRQ_BASE + bit); +} + + +/* + * Called when an interrupt is received, this function + * determines exactly which interrupt it was, and it + * invokes the appropriate handler. + * + * Implicitly, we also define interrupt priority by + * choosing which to dispatch first. + */ +static asmlinkage void +ar2315_irq_dispatch(void) +{ + int pending = read_c0_status() & read_c0_cause(); + + if (pending & CAUSEF_IP3) + do_IRQ(AR2315_IRQ_WLAN0_INTRS); + else if (pending & CAUSEF_IP4) + do_IRQ(AR2315_IRQ_ENET0_INTRS); + else if (pending & CAUSEF_IP2) { + unsigned int misc_intr = ar231x_read_reg(AR2315_ISR) & ar231x_read_reg(AR2315_IMR); + + if (misc_intr & AR2315_ISR_SPI) + do_IRQ(AR531X_MISC_IRQ_SPI); + else if (misc_intr & AR2315_ISR_TIMER) + do_IRQ(AR531X_MISC_IRQ_TIMER); + else if (misc_intr & AR2315_ISR_AHB) + do_IRQ(AR531X_MISC_IRQ_AHB_PROC); + else if (misc_intr & AR2315_ISR_GPIO) + ar2315_gpio_irq(); + else if (misc_intr & AR2315_ISR_UART0) + do_IRQ(AR531X_MISC_IRQ_UART0); + else if (misc_intr & AR2315_ISR_WD) + do_IRQ(AR531X_MISC_IRQ_WATCHDOG); + else + do_IRQ(AR531X_MISC_IRQ_NONE); + } else if (pending & CAUSEF_IP7) + do_IRQ(AR531X_IRQ_CPU_CLOCK); +} + +static void ar2315_set_gpiointmask(int gpio, int level) +{ + u32 reg; + + reg = ar231x_read_reg(AR2315_GPIO_INT); + reg &= ~(AR2315_GPIO_INT_M | AR2315_GPIO_INT_LVL_M); + reg |= gpio | AR2315_GPIO_INT_LVL(level); + ar231x_write_reg(AR2315_GPIO_INT, reg); +} + +static void ar2315_gpio_intr_enable(struct irq_data *d) +{ + unsigned int gpio = d->irq - AR531X_GPIO_IRQ_BASE; + + /* Enable interrupt with edge detection */ + if ((ar231x_read_reg(AR2315_GPIO_CR) & AR2315_GPIO_CR_M(gpio)) != AR2315_GPIO_CR_I(gpio)) + return; + + gpiointmask |= (1 << gpio); + ar2315_set_gpiointmask(gpio, 3); +} + +static void ar2315_gpio_intr_disable(struct irq_data *d) +{ + unsigned int gpio = d->irq - AR531X_GPIO_IRQ_BASE; + + /* Disable interrupt */ + gpiointmask &= ~(1 << gpio); + ar2315_set_gpiointmask(gpio, 0); +} + +static struct irq_chip ar2315_gpio_intr_controller = { + .irq_mask = ar2315_gpio_intr_disable, + .irq_unmask = ar2315_gpio_intr_enable, +}; + +static void +ar2315_misc_intr_enable(struct irq_data *d) +{ + unsigned int imr; + + imr = ar231x_read_reg(AR2315_IMR); + switch(d->irq) { + case AR531X_MISC_IRQ_SPI: + imr |= AR2315_ISR_SPI; + break; + case AR531X_MISC_IRQ_TIMER: + imr |= AR2315_ISR_TIMER; + break; + case AR531X_MISC_IRQ_AHB_PROC: + imr |= AR2315_ISR_AHB; + break; + case AR531X_MISC_IRQ_GPIO: + imr |= AR2315_ISR_GPIO; + break; + case AR531X_MISC_IRQ_UART0: + imr |= AR2315_ISR_UART0; + break; + case AR531X_MISC_IRQ_WATCHDOG: + imr |= AR2315_ISR_WD; + break; + default: + break; + } + ar231x_write_reg(AR2315_IMR, imr); +} + +static void +ar2315_misc_intr_disable(struct irq_data *d) +{ + unsigned int imr; + + imr = ar231x_read_reg(AR2315_IMR); + switch(d->irq) { + case AR531X_MISC_IRQ_SPI: + imr &= ~AR2315_ISR_SPI; + break; + case AR531X_MISC_IRQ_TIMER: + imr &= ~AR2315_ISR_TIMER; + break; + case AR531X_MISC_IRQ_AHB_PROC: + imr &= ~AR2315_ISR_AHB; + break; + case AR531X_MISC_IRQ_GPIO: + imr &= ~AR2315_ISR_GPIO; + break; + case AR531X_MISC_IRQ_UART0: + imr &= ~AR2315_ISR_UART0; + break; + case AR531X_MISC_IRQ_WATCHDOG: + imr &= ~AR2315_ISR_WD; + break; + default: + break; + } + ar231x_write_reg(AR2315_IMR, imr); +} + +static struct irq_chip ar2315_misc_intr_controller = { + .irq_mask = ar2315_misc_intr_disable, + .irq_unmask = ar2315_misc_intr_enable, +}; + +static irqreturn_t ar2315_ahb_proc_handler(int cpl, void *dev_id) +{ + ar231x_write_reg(AR2315_AHB_ERR0, AHB_ERROR_DET); + ar231x_read_reg(AR2315_AHB_ERR1); + + printk(KERN_ERR "AHB fatal error\n"); + machine_restart("AHB error"); /* Catastrophic failure */ + + return IRQ_HANDLED; +} + +static struct irqaction ar2315_ahb_proc_interrupt = { + .handler = ar2315_ahb_proc_handler, + .name = "ar2315_ahb_proc_interrupt", +}; + +static struct irqaction cascade = { + .handler = no_action, + .name = "cascade", +}; + +void +ar2315_irq_init(void) +{ + int i; + + if (!is_2315()) + return; + + ar231x_irq_dispatch = ar2315_irq_dispatch; + gpiointval = ar231x_read_reg(AR2315_GPIO_DI); + for (i = 0; i < AR531X_MISC_IRQ_COUNT; i++) { + int irq = AR531X_MISC_IRQ_BASE + i; + irq_set_chip_and_handler(irq, &ar2315_misc_intr_controller, + handle_level_irq); + } + for (i = 0; i < AR531X_GPIO_IRQ_COUNT; i++) { + int irq = AR531X_GPIO_IRQ_BASE + i; + irq_set_chip_and_handler(irq, &ar2315_gpio_intr_controller, + handle_level_irq); + } + setup_irq(AR531X_MISC_IRQ_GPIO, &cascade); + setup_irq(AR531X_MISC_IRQ_AHB_PROC, &ar2315_ahb_proc_interrupt); + setup_irq(AR2315_IRQ_MISC_INTRS, &cascade); +} + +static u32 +ar2315_gpio_set_output(u32 mask, u32 val) +{ + u32 reg; + + reg = ar231x_read_reg(AR2315_GPIO_CR); + reg &= ~mask; + reg |= val; + ar231x_write_reg(AR2315_GPIO_CR, reg); + return reg; +} + +static u32 +ar2315_gpio_get(u32 valid_mask) +{ + u32 reg; + reg = ar231x_read_reg(AR2315_GPIO_DI); + reg &= valid_mask; + return reg; +} + +static u32 +ar2315_gpio_set(u32 mask, u32 value) +{ + u32 reg; + reg = ar231x_read_reg(AR2315_GPIO_DO); + reg &= ~mask; + reg |= value; + ar231x_write_reg(AR2315_GPIO_DO, reg); + return reg; +} + +/* + * gpiolib implementation. Original legacy mask based methods + * preserved for now. + */ +static int +ar2315_gpio_get_value(struct gpio_chip *chip, unsigned gpio) +{ + struct ar231x_gpio_chip *gpch = + container_of(chip, struct ar231x_gpio_chip, chip); + u32 mask = 1 << gpio; + u32 rett; + if (!(gpch->valid_mask & mask)) + return 0; + rett = ar2315_gpio_get(gpch->valid_mask); // legacy code + return !!(rett & mask); +} + +static void +ar2315_gpio_set_value(struct gpio_chip *chip, unsigned gpio, int value) +{ + struct ar231x_gpio_chip *gpch = + container_of(chip, struct ar231x_gpio_chip, chip); + u32 mask = 1 << gpio; + if (!(gpch->valid_mask & mask)) + return; + ar2315_gpio_set(mask, (!!value) * mask); // legacy +} + +static int +ar2315_gpio_direction_input(struct gpio_chip *chip, unsigned gpio) +{ + struct ar231x_gpio_chip *gpch = + container_of(chip, struct ar231x_gpio_chip, chip); + u32 mask = 1 << gpio; + if (!(gpch->valid_mask & mask)) + return -ENXIO; + ar2315_gpio_set_output(mask, 0); // legacy + return 0; +} + +static int +ar2315_gpio_direction_output(struct gpio_chip *chip, unsigned gpio, int value) +{ + struct ar231x_gpio_chip *gpch = + container_of(chip, struct ar231x_gpio_chip, chip); + u32 mask = 1 << gpio; + if (!(gpch->valid_mask & mask)) + return -ENXIO; + ar2315_gpio_set_output(mask, mask); // both legacy + ar2315_gpio_set(mask, (!!value) * mask); + return 0; +} + +static struct ar231x_gpio_chip ar2315_gpio_chip = { + .valid_mask = (1 << 22) - 1, + .chip = { + .label = "ar2315-gpio", + .direction_input = ar2315_gpio_direction_input, + .direction_output = ar2315_gpio_direction_output, + .set = ar2315_gpio_set_value, + .get = ar2315_gpio_get_value, + .base = 0, + .ngpio = AR531X_GPIO_IRQ_COUNT, // 22 + } +}; + +// end of gpiolib + + +static struct ar231x_eth ar2315_eth_data = { + .reset_base = AR2315_RESET, + .reset_mac = AR2315_RESET_ENET0, + .reset_phy = AR2315_RESET_EPHY0, + .phy_base = KSEG1ADDR(AR2315_ENET0), + .config = &ar231x_board, +}; + +static struct resource ar2315_spiflash_res[] = { + { + .name = "flash_base", + .flags = IORESOURCE_MEM, + .start = KSEG1ADDR(AR2315_SPI_READ), + .end = KSEG1ADDR(AR2315_SPI_READ) + 0x1000000 - 1, + }, + { + .name = "flash_regs", + .flags = IORESOURCE_MEM, + .start = 0x11300000, + .end = 0x11300012, + }, +}; + +static struct platform_device ar2315_spiflash = { + .id = 0, + .name = "spiflash", + .resource = ar2315_spiflash_res, + .num_resources = ARRAY_SIZE(ar2315_spiflash_res) +}; + +static struct platform_device ar2315_wdt = { + .id = 0, + .name = "ar2315_wdt", +}; + +#define SPI_FLASH_CTL 0x00 +#define SPI_FLASH_OPCODE 0x04 +#define SPI_FLASH_DATA 0x08 + +static inline u32 +spiflash_read_reg(int reg) +{ + return ar231x_read_reg(AR2315_SPI + reg); +} + +static inline void +spiflash_write_reg(int reg, u32 data) +{ + ar231x_write_reg(AR2315_SPI + reg, data); +} + +static u32 +spiflash_wait_status(void) +{ + u32 reg; + + do { + reg = spiflash_read_reg(SPI_FLASH_CTL); + } while (reg & SPI_CTL_BUSY); + + return reg; +} + +static u8 +spiflash_probe(void) +{ + u32 reg; + + reg = spiflash_wait_status(); + reg &= ~SPI_CTL_TX_RX_CNT_MASK; + reg |= (1 << 4) | 4 | SPI_CTL_START; + + spiflash_write_reg(SPI_FLASH_OPCODE, 0xab); + spiflash_write_reg(SPI_FLASH_CTL, reg); + + reg = spiflash_wait_status(); + reg = spiflash_read_reg(SPI_FLASH_DATA); + reg &= 0xff; + + return (u8) reg; +} + + +#define STM_8MBIT_SIGNATURE 0x13 +#define STM_16MBIT_SIGNATURE 0x14 +#define STM_32MBIT_SIGNATURE 0x15 +#define STM_64MBIT_SIGNATURE 0x16 +#define STM_128MBIT_SIGNATURE 0x17 + +static u8 __init * +ar2315_flash_limit(void) +{ + u32 flash_size = 0; + + /* probe the flash chip size */ + switch(spiflash_probe()) { + case STM_8MBIT_SIGNATURE: + flash_size = 0x00100000; + break; + case STM_16MBIT_SIGNATURE: + flash_size = 0x00200000; + break; + case STM_32MBIT_SIGNATURE: + flash_size = 0x00400000; + break; + case STM_64MBIT_SIGNATURE: + flash_size = 0x00800000; + break; + case STM_128MBIT_SIGNATURE: + flash_size = 0x01000000; + break; + } + + ar2315_spiflash_res[0].end = ar2315_spiflash_res[0].start + + flash_size - 1; + return (u8 *) ar2315_spiflash_res[0].end + 1; +} + +#ifdef CONFIG_LEDS_GPIO +static struct gpio_led ar2315_leds[6]; +static struct gpio_led_platform_data ar2315_led_data = { + .leds = (void *) ar2315_leds, +}; + +static struct platform_device ar2315_gpio_leds = { + .name = "leds-gpio", + .id = -1, + .dev = { + .platform_data = (void *) &ar2315_led_data, + } +}; + +static void __init +ar2315_init_gpio_leds(void) +{ + static char led_names[6][6]; + int i, led = 0; + + ar2315_led_data.num_leds = 0; + for(i = 1; i < 8; i++) + { + if((i == AR2315_RESET_GPIO) || + (i == ar231x_board.config->resetConfigGpio)) + continue; + + if(i == ar231x_board.config->sysLedGpio) + strcpy(led_names[led], "wlan"); + else + sprintf(led_names[led], "gpio%d", i); + + ar2315_leds[led].name = led_names[led]; + ar2315_leds[led].gpio = i; + ar2315_leds[led].active_low = 0; + led++; + } + ar2315_led_data.num_leds = led; + platform_device_register(&ar2315_gpio_leds); +} +#else +static inline void ar2315_init_gpio_leds(void) +{ +} +#endif + +int __init +ar2315_init_devices(void) +{ + if (!is_2315()) + return 0; + + /* Find board configuration */ + ar231x_find_config(ar2315_flash_limit()); + ar2315_eth_data.macaddr = ar231x_board.config->enet0_mac; + + ar2315_init_gpio_leds(); + platform_device_register(&ar2315_wdt); + platform_device_register(&ar2315_spiflash); + ar231x_add_ethernet(0, KSEG1ADDR(AR2315_ENET0), AR2315_IRQ_ENET0_INTRS, + &ar2315_eth_data); + ar231x_add_wmac(0, AR2315_WLAN0, AR2315_IRQ_WLAN0_INTRS); + + return 0; +} + +static void +ar2315_restart(char *command) +{ + void (*mips_reset_vec)(void) = (void *) 0xbfc00000; + + local_irq_disable(); + + /* try reset the system via reset control */ + ar231x_write_reg(AR2315_COLD_RESET,AR2317_RESET_SYSTEM); + + /* Cold reset does not work on the AR2315/6, use the GPIO reset bits a workaround. + * give it some time to attempt a gpio based hardware reset + * (atheros reference design workaround) */ + gpio_direction_output(AR2315_RESET_GPIO, 0); + mdelay(100); + + /* Some boards (e.g. Senao EOC-2610) don't implement the reset logic + * workaround. Attempt to jump to the mips reset location - + * the boot loader itself might be able to recover the system */ + mips_reset_vec(); +} + + +/* + * This table is indexed by bits 5..4 of the CLOCKCTL1 register + * to determine the predevisor value. + */ +static int __initdata CLOCKCTL1_PREDIVIDE_TABLE[4] = { 1, 2, 4, 5 }; +static int __initdata PLLC_DIVIDE_TABLE[5] = { 2, 3, 4, 6, 3 }; + +static unsigned int __init +ar2315_sys_clk(unsigned int clockCtl) +{ + unsigned int pllcCtrl,cpuDiv; + unsigned int pllcOut,refdiv,fdiv,divby2; + unsigned int clkDiv; + + pllcCtrl = ar231x_read_reg(AR2315_PLLC_CTL); + refdiv = (pllcCtrl & PLLC_REF_DIV_M) >> PLLC_REF_DIV_S; + refdiv = CLOCKCTL1_PREDIVIDE_TABLE[refdiv]; + fdiv = (pllcCtrl & PLLC_FDBACK_DIV_M) >> PLLC_FDBACK_DIV_S; + divby2 = (pllcCtrl & PLLC_ADD_FDBACK_DIV_M) >> PLLC_ADD_FDBACK_DIV_S; + divby2 += 1; + pllcOut = (40000000/refdiv)*(2*divby2)*fdiv; + + + /* clkm input selected */ + switch(clockCtl & CPUCLK_CLK_SEL_M) { + case 0: + case 1: + clkDiv = PLLC_DIVIDE_TABLE[(pllcCtrl & PLLC_CLKM_DIV_M) >> PLLC_CLKM_DIV_S]; + break; + case 2: + clkDiv = PLLC_DIVIDE_TABLE[(pllcCtrl & PLLC_CLKC_DIV_M) >> PLLC_CLKC_DIV_S]; + break; + default: + pllcOut = 40000000; + clkDiv = 1; + break; + } + cpuDiv = (clockCtl & CPUCLK_CLK_DIV_M) >> CPUCLK_CLK_DIV_S; + cpuDiv = cpuDiv * 2 ?: 1; + return (pllcOut/(clkDiv * cpuDiv)); +} + +static inline unsigned int +ar2315_cpu_frequency(void) +{ + return ar2315_sys_clk(ar231x_read_reg(AR2315_CPUCLK)); +} + +static inline unsigned int +ar2315_apb_frequency(void) +{ + return ar2315_sys_clk(ar231x_read_reg(AR2315_AMBACLK)); +} + +void __init +ar2315_time_init(void) +{ + if (!is_2315()) + return; + + mips_hpt_frequency = ar2315_cpu_frequency() / 2; +} + +int __init +ar2315_gpio_init(void) +{ + int ret; + struct ar231x_gpio_chip *gpch; + gpch = &ar2315_gpio_chip; + ret = gpiochip_add(&gpch->chip); + if (ret) { + printk(KERN_ERR "%s: failed to add gpiochip\n", + gpch->chip.label); + return ret; + } + printk(KERN_INFO "%s: registered %d GPIOs\n", + gpch->chip.label, gpch->chip.ngpio); + return ret; +} + + + +void __init +ar2315_prom_init(void) +{ + u32 memsize, memcfg, devid; + + if (!is_2315()) + return; + + memcfg = ar231x_read_reg(AR2315_MEM_CFG); + memsize = 1 + ((memcfg & SDRAM_DATA_WIDTH_M) >> SDRAM_DATA_WIDTH_S); + memsize <<= 1 + ((memcfg & SDRAM_COL_WIDTH_M) >> SDRAM_COL_WIDTH_S); + memsize <<= 1 + ((memcfg & SDRAM_ROW_WIDTH_M) >> SDRAM_ROW_WIDTH_S); + memsize <<= 3; + add_memory_region(0, memsize, BOOT_MEM_RAM); + + /* Detect the hardware based on the device ID */ + devid = ar231x_read_reg(AR2315_SREV) & AR2315_REV_CHIP; + switch(devid) { + case 0x90: + case 0x91: + ar231x_devtype = DEV_TYPE_AR2317; + break; + default: + ar231x_devtype = DEV_TYPE_AR2315; + break; + } + ar2315_gpio_init(); + ar231x_board.devid = devid; +} + +void __init +ar2315_plat_setup(void) +{ + u32 config; + + if (!is_2315()) + return; + + gpio_request(AR2315_RESET_GPIO, "reset"); + + /* Clear any lingering AHB errors */ + config = read_c0_config(); + write_c0_config(config & ~0x3); + ar231x_write_reg(AR2315_AHB_ERR0,AHB_ERROR_DET); + ar231x_read_reg(AR2315_AHB_ERR1); + ar231x_write_reg(AR2315_WDC, AR2315_WDC_IGNORE_EXPIRATION); + + _machine_restart = ar2315_restart; + ar231x_serial_setup(KSEG1ADDR(AR2315_UART0), ar2315_apb_frequency()); +} --- /dev/null +++ b/arch/mips/ar231x/ar2315.h @@ -0,0 +1,37 @@ +#ifndef __AR2315_H +#define __AR2315_H + +#ifdef CONFIG_ATHEROS_AR2315 + +extern void ar2315_irq_init(void); +extern int ar2315_init_devices(void); +extern void ar2315_prom_init(void); +extern void ar2315_plat_setup(void); +extern void ar2315_time_init(void); + +#else + +static inline void ar2315_irq_init(void) +{ +} + +static inline int ar2315_init_devices(void) +{ + return 0; +} + +static inline void ar2315_prom_init(void) +{ +} + +static inline void ar2315_plat_setup(void) +{ +} + +static inline void ar2315_time_init(void) +{ +} + +#endif + +#endif --- /dev/null +++ b/arch/mips/ar231x/ar5312.h @@ -0,0 +1,38 @@ +#ifndef __AR5312_H +#define __AR5312_H + +#ifdef CONFIG_ATHEROS_AR5312 + +extern void ar5312_irq_init(void); +extern int ar5312_init_devices(void); +extern void ar5312_prom_init(void); +extern void ar5312_plat_setup(void); +extern void ar5312_time_init(void); +extern void ar5312_time_init(void); + +#else + +static inline void ar5312_irq_init(void) +{ +} + +static inline int ar5312_init_devices(void) +{ + return 0; +} + +static inline void ar5312_prom_init(void) +{ +} + +static inline void ar5312_plat_setup(void) +{ +} + +static inline void ar5312_time_init(void) +{ +} + +#endif + +#endif --- /dev/null +++ b/arch/mips/include/asm/mach-ar231x/ar231x.h @@ -0,0 +1,57 @@ +#ifndef __AR531X_H +#define __AR531X_H + +#include <linux/types.h> +#include <linux/io.h> + +#define AR531X_MISC_IRQ_BASE 0x20 +#define AR531X_GPIO_IRQ_BASE 0x30 + +/* Software's idea of interrupts handled by "CPU Interrupt Controller" */ +#define AR531X_IRQ_NONE MIPS_CPU_IRQ_BASE+0 +#define AR531X_IRQ_CPU_CLOCK MIPS_CPU_IRQ_BASE+7 /* C0_CAUSE: 0x8000 */ + +/* Miscellaneous interrupts, which share IP6 */ +#define AR531X_MISC_IRQ_NONE AR531X_MISC_IRQ_BASE+0 +#define AR531X_MISC_IRQ_TIMER AR531X_MISC_IRQ_BASE+1 +#define AR531X_MISC_IRQ_AHB_PROC AR531X_MISC_IRQ_BASE+2 +#define AR531X_MISC_IRQ_AHB_DMA AR531X_MISC_IRQ_BASE+3 +#define AR531X_MISC_IRQ_GPIO AR531X_MISC_IRQ_BASE+4 +#define AR531X_MISC_IRQ_UART0 AR531X_MISC_IRQ_BASE+5 +#define AR531X_MISC_IRQ_UART0_DMA AR531X_MISC_IRQ_BASE+6 +#define AR531X_MISC_IRQ_WATCHDOG AR531X_MISC_IRQ_BASE+7 +#define AR531X_MISC_IRQ_LOCAL AR531X_MISC_IRQ_BASE+8 +#define AR531X_MISC_IRQ_SPI AR531X_MISC_IRQ_BASE+9 +#define AR531X_MISC_IRQ_COUNT 10 + +/* GPIO Interrupts [0..7], share AR531X_MISC_IRQ_GPIO */ +#define AR531X_GPIO_IRQ_NONE AR531X_GPIO_IRQ_BASE+0 +#define AR531X_GPIO_IRQ(n) AR531X_GPIO_IRQ_BASE+n +#define AR531X_GPIO_IRQ_COUNT 22 + +static inline u32 +ar231x_read_reg(u32 reg) +{ + return __raw_readl((u32 *) KSEG1ADDR(reg)); +} + +static inline void +ar231x_write_reg(u32 reg, u32 val) +{ + __raw_writel(val, (u32 *) KSEG1ADDR(reg)); +} + +static inline u32 +ar231x_mask_reg(u32 reg, u32 mask, u32 val) +{ + u32 ret; + + ret = ar231x_read_reg(reg); + ret &= ~mask; + ret |= val; + ar231x_write_reg(reg, ret); + + return ret; +} + +#endif --- /dev/null +++ b/arch/mips/ar231x/devices.h @@ -0,0 +1,42 @@ +#ifndef __AR231X_DEVICES_H +#define __AR231X_DEVICES_H +#include <linux/gpio.h> + +enum { + /* handled by ar5312.c */ + DEV_TYPE_AR2312, + DEV_TYPE_AR2313, + DEV_TYPE_AR5312, + + /* handled by ar2315.c */ + DEV_TYPE_AR2315, + DEV_TYPE_AR2316, + DEV_TYPE_AR2317, + + DEV_TYPE_UNKNOWN +}; + +extern int ar231x_devtype; +extern struct ar231x_board_config ar231x_board; +extern asmlinkage void (*ar231x_irq_dispatch)(void); + +extern int ar231x_find_config(u8 *flash_limit); +extern void ar231x_serial_setup(u32 mapbase, unsigned int uartclk); +extern int ar231x_add_wmac(int nr, u32 base, int irq); +extern int ar231x_add_ethernet(int nr, u32 base, int irq, void *pdata); + +static inline bool is_2315(void) +{ + return (current_cpu_data.cputype == CPU_4KEC); +} + +static inline bool is_5312(void) +{ + return !is_2315(); +} + +struct ar231x_gpio_chip { + u32 valid_mask; + struct gpio_chip chip; +}; +#endif --- /dev/null +++ b/arch/mips/ar231x/devices.c @@ -0,0 +1,173 @@ +#include <linux/kernel.h> +#include <linux/init.h> +#include <linux/serial.h> +#include <linux/serial_core.h> +#include <linux/serial_8250.h> +#include <linux/platform_device.h> +#include <ar231x_platform.h> +#include <ar231x.h> +#include "devices.h" +#include "ar5312.h" +#include "ar2315.h" + +struct ar231x_board_config ar231x_board; +int ar231x_devtype = DEV_TYPE_UNKNOWN; + +static struct resource ar231x_eth0_res[] = { + { + .name = "eth0_membase", + .flags = IORESOURCE_MEM, + }, + { + .name = "eth0_irq", + .flags = IORESOURCE_IRQ, + } +}; + +static struct resource ar231x_eth1_res[] = { + { + .name = "eth1_membase", + .flags = IORESOURCE_MEM, + }, + { + .name = "eth1_irq", + .flags = IORESOURCE_IRQ, + } +}; + +static struct platform_device ar231x_eth[] = { + { + .id = 0, + .name = "ar231x-eth", + .resource = ar231x_eth0_res, + .num_resources = ARRAY_SIZE(ar231x_eth0_res) + }, + { + .id = 1, + .name = "ar231x-eth", + .resource = ar231x_eth1_res, + .num_resources = ARRAY_SIZE(ar231x_eth1_res) + } +}; + +static struct resource ar231x_wmac0_res[] = { + { + .name = "wmac0_membase", + .flags = IORESOURCE_MEM, + }, + { + .name = "wmac0_irq", + .flags = IORESOURCE_IRQ, + } +}; + +static struct resource ar231x_wmac1_res[] = { + { + .name = "wmac1_membase", + .flags = IORESOURCE_MEM, + }, + { + .name = "wmac1_irq", + .flags = IORESOURCE_IRQ, + } +}; + + +static struct platform_device ar231x_wmac[] = { + { + .id = 0, + .name = "ar231x-wmac", + .resource = ar231x_wmac0_res, + .num_resources = ARRAY_SIZE(ar231x_wmac0_res), + .dev.platform_data = &ar231x_board, + }, + { + .id = 1, + .name = "ar231x-wmac", + .resource = ar231x_wmac1_res, + .num_resources = ARRAY_SIZE(ar231x_wmac1_res), + .dev.platform_data = &ar231x_board, + }, +}; + +static const char *devtype_strings[] = { + [DEV_TYPE_AR5312] = "Atheros AR5312", + [DEV_TYPE_AR2312] = "Atheros AR2312", + [DEV_TYPE_AR2313] = "Atheros AR2313", + [DEV_TYPE_AR2315] = "Atheros AR2315", + [DEV_TYPE_AR2316] = "Atheros AR2316", + [DEV_TYPE_AR2317] = "Atheros AR2317", + [DEV_TYPE_UNKNOWN] = "Atheros (unknown)", +}; + +const char *get_system_type(void) +{ + if ((ar231x_devtype >= ARRAY_SIZE(devtype_strings)) || + !devtype_strings[ar231x_devtype]) + return devtype_strings[DEV_TYPE_UNKNOWN]; + return devtype_strings[ar231x_devtype]; +} + + +int __init +ar231x_add_ethernet(int nr, u32 base, int irq, void *pdata) +{ + struct resource *res; + + ar231x_eth[nr].dev.platform_data = pdata; + res = &ar231x_eth[nr].resource[0]; + res->start = base; + res->end = base + 0x2000 - 1; + res++; + res->start = irq; + res->end = irq; + return platform_device_register(&ar231x_eth[nr]); +} + +void __init +ar231x_serial_setup(u32 mapbase, unsigned int uartclk) +{ + struct uart_port s; + + memset(&s, 0, sizeof(s)); + + s.flags = UPF_BOOT_AUTOCONF | UPF_SKIP_TEST; + s.iotype = UPIO_MEM; + s.irq = AR531X_MISC_IRQ_UART0; + s.regshift = 2; + s.mapbase = mapbase; + s.uartclk = uartclk; + s.membase = (void __iomem *)s.mapbase; + + early_serial_setup(&s); +} + +int __init +ar231x_add_wmac(int nr, u32 base, int irq) +{ + struct resource *res; + + ar231x_wmac[nr].dev.platform_data = &ar231x_board; + res = &ar231x_wmac[nr].resource[0]; + res->start = base; + res->end = base + 0x10000 - 1; + res++; + res->start = irq; + res->end = irq; + return platform_device_register(&ar231x_wmac[nr]); +} + +static int __init ar231x_register_devices(void) +{ + static struct resource res = { + .start = 0xFFFFFFFF, + }; + + platform_device_register_simple("GPIODEV", 0, &res, 1); + ar5312_init_devices(); + ar2315_init_devices(); + + return 0; +} + +device_initcall(ar231x_register_devices);