From 378c3a70f81ddfbbddf3656977f81b7dfd8f96cd Mon Sep 17 00:00:00 2001 From: Marti Bolivar Date: Sun, 3 Jun 2012 06:00:41 -0400 Subject: Slightly improve and generify the USB infrastructure. The good news is that and did turn out generic enough in what they specify to go on unchanged. However, we can't just go on assuming that there's USB just because we're on an F1. Now that there's value line in the tree, we need to be more careful (value line F1s don't have USB peripherals). To that end, make all the F1 board-includes/*.mk files specify what line their MCU is with an MCU_F1_LINE variable. Use that to hack libmaple/usb/rules.mk so we only try to build the USB module under appropriate circumstances. While we're at it, add a vector_symbols.inc for value line MCUs under support/ld/. We need this to get the target-config.mk modifications implied by the addition of MCU_F1_LINE. We'll fix up some other performance-line-isms under libmaple/stm32f1 in a separate commit. Also in libmaple/usb/: - Move everything into a new stm32f1 directory. Due to aforementioned rules.mk hacks, there is no immediate need for an stm32f2 directory (USB support doesn't exist there). - Update the README for style and content. Signed-off-by: Marti Bolivar --- libmaple/usb/README | 69 ++- libmaple/usb/rules.mk | 27 +- libmaple/usb/stm32f1/usb.c | 381 +++++++++++++++++ libmaple/usb/stm32f1/usb_cdcacm.c | 762 +++++++++++++++++++++++++++++++++ libmaple/usb/stm32f1/usb_descriptors.h | 148 +++++++ libmaple/usb/stm32f1/usb_lib_globals.h | 55 +++ libmaple/usb/stm32f1/usb_reg_map.c | 79 ++++ libmaple/usb/stm32f1/usb_reg_map.h | 433 +++++++++++++++++++ libmaple/usb/usb.c | 381 ----------------- libmaple/usb/usb_cdcacm.c | 762 --------------------------------- libmaple/usb/usb_descriptors.h | 148 ------- libmaple/usb/usb_lib_globals.h | 55 --- libmaple/usb/usb_reg_map.c | 79 ---- libmaple/usb/usb_reg_map.h | 433 ------------------- 14 files changed, 1906 insertions(+), 1906 deletions(-) create mode 100644 libmaple/usb/stm32f1/usb.c create mode 100644 libmaple/usb/stm32f1/usb_cdcacm.c create mode 100644 libmaple/usb/stm32f1/usb_descriptors.h create mode 100644 libmaple/usb/stm32f1/usb_lib_globals.h create mode 100644 libmaple/usb/stm32f1/usb_reg_map.c create mode 100644 libmaple/usb/stm32f1/usb_reg_map.h delete mode 100644 libmaple/usb/usb.c delete mode 100644 libmaple/usb/usb_cdcacm.c delete mode 100644 libmaple/usb/usb_descriptors.h delete mode 100644 libmaple/usb/usb_lib_globals.h delete mode 100644 libmaple/usb/usb_reg_map.c delete mode 100644 libmaple/usb/usb_reg_map.h (limited to 'libmaple/usb') diff --git a/libmaple/usb/README b/libmaple/usb/README index 2c55364..d0fca8d 100644 --- a/libmaple/usb/README +++ b/libmaple/usb/README @@ -1,35 +1,24 @@ -The USB submodule of libmaple is responsible for: - - Initializing the USB peripheral, scaling the peripheral clocks - appropriately, enabling the interrupt channels to USB, defining - the USB IRQ, resetting the USB DISC pin (used to tell the host - were alive). Additionally, the USB submodule defines the virtual - COM port interface that is exposed to user sketches via SerialUSB. - -To use it: - - SerialUSB.print/ln, available(), read(), write() implement the same - interface as Serial1/2/3. +The USB submodule of libmaple is a separate piece of the codebase for +reasons that are largely historical. Current Status: - Currently, the USB submodule relies on the low level core library - provided by ST to implement the USB transfer protocol for control - endpoint transfers. The high level virtual com port application - is unfortunately hard to untangle from this low level dependence, - and when a new USB core library is written (to nix ST dependence) - changes will likely have to be made to virtual com application - code. Ideally, the new core library should mimic the form of MyUSB - (LUFA), since this library (USB for AVR) is growing in popularity - and in example applications. + There's only support for the USB device peripheral found on + STM32F103s. - The virtual com port serves two important purposes. + We rely on the low level core library provided by ST to implement + the USB transfer protocol for control endpoint transfers. - 1) It allows serial data transfers between user sketches an a - host computer. + The virtual com port (which is exposed via + ) serves two important purposes. - 2) It allows the host machine to issue a system reset by - asserting the DTR signal. + 1) It allows serial data transfers between user sketches an a + host computer. + + 2) It allows the host PC to issue a system reset into the DFU + bootloader with the DTR + RTS + "1EAF" sequence (see + leaflabs.com/docs/bootloader.html for more information on + this). After reset, Maple will run the DFU bootloader for a few seconds, during which the user can begin a DFU upload operation (uploads @@ -38,11 +27,11 @@ Current Status: the chip in order to enable the bootloader. If you would like to develop your own USB application for whatever - reason (uses faster isochronous enpoints for streaming audio, or - implements the USB HID or Mass Storage specs for examples) then + reason (e.g. to use faster isochronous enpoints for streaming + audio, or implement the USB HID or Mass Storage specs), then ensure that you leave some hook for resetting Maple remotely in - order to spin up the DFU bootloader. Please make sure to give - yourself a unique vendor/product ID pair in your application, as + order to spin up the DFU bootloader. Please make sure to get + yourself a unique vendor/product ID pair for your application, as some operating systems will assign a host-side driver based on these tags. @@ -52,21 +41,23 @@ Current Status: be a burden from the host driver side, as Windows and *nix handle compound USB devices quite differently. - Be mindful that enabling the USB peripheral isnt "free." The + Be mindful that enabling the USB peripheral isn't "free." The device must respond to periodic bus activity (every few milliseconds) by servicing an ISR. Therefore, the USB application - should be disabled inside of timing critical applications. In - order to disconnect the device from the host, the USB_DISC pin can - be asserted (on Maple this is GPIO C12). Alternatively, the NVIC + should be disabled inside of timing critical applications. + + In order to disconnect the device from the host, a USB_DISC pin is + asserted (e.g. on Maple, this is PC12). Alternatively, the NVIC can be directly configured to disable the USB LP/HP IRQ's. The files inside of usb_lib were provided by ST and are subject to their own license, all other files were written by the LeafLabs team and fall under the MIT license. -Todo: +TODO: - - write custom low level USB stack to strip out any remaining - dependence on ST code - - add a high level USB application library that would allow users - to make their own HID/Mass Storage/Audio/Video devices. + - Generic USB driver core with series-provided backends, like + libopencm3 has. + - Strip out ST code. + - Integration with a high level USB library (like LUFA/MyUSB) to + allow users to write custom USB applications. diff --git a/libmaple/usb/rules.mk b/libmaple/usb/rules.mk index 816fad6..e8ccc15 100644 --- a/libmaple/usb/rules.mk +++ b/libmaple/usb/rules.mk @@ -3,20 +3,29 @@ sp := $(sp).x dirstack_$(sp) := $(d) d := $(dir) BUILDDIRS += $(BUILD_PATH)/$(d) -BUILDDIRS += $(BUILD_PATH)/$(d)/usb_lib # Local flags -CFLAGS_$(d) = -I$(d) -I$(d)/usb_lib $(LIBMAPLE_INCLUDES) $(LIBMAPLE_PRIVATE_INCLUDES) -Wall +CFLAGS_$(d) = -I$(d) -I$(d)/$(MCU_SERIES) -I$(d)/usb_lib $(LIBMAPLE_INCLUDES) $(LIBMAPLE_PRIVATE_INCLUDES) -Wall + +# Add usblib and series subdirectory to BUILDDIRS. +BUILDDIRS += $(BUILD_PATH)/$(d)/$(MCU_SERIES) +BUILDDIRS += $(BUILD_PATH)/$(d)/usb_lib # Local rules and targets sSRCS_$(d) := -cSRCS_$(d) := usb.c \ - usb_reg_map.c \ - usb_cdcacm.c \ - usb_lib/usb_core.c \ - usb_lib/usb_init.c \ - usb_lib/usb_mem.c \ - usb_lib/usb_regs.c +cSRCS_$(d) := +# We currently only have F1 performance line support. Sigh. +ifeq ($(MCU_SERIES), stm32f1) +ifeq ($(MCU_F1_LINE), performance) +cSRCS_$(d) += $(MCU_SERIES)/usb.c +cSRCS_$(d) += $(MCU_SERIES)/usb_reg_map.c +cSRCS_$(d) += $(MCU_SERIES)/usb_cdcacm.c +cSRCS_$(d) += usb_lib/usb_core.c +cSRCS_$(d) += usb_lib/usb_init.c +cSRCS_$(d) += usb_lib/usb_mem.c +cSRCS_$(d) += usb_lib/usb_regs.c +endif +endif sFILES_$(d) := $(sSRCS_$(d):%=$(d)/%) cFILES_$(d) := $(cSRCS_$(d):%=$(d)/%) diff --git a/libmaple/usb/stm32f1/usb.c b/libmaple/usb/stm32f1/usb.c new file mode 100644 index 0000000..0130bab --- /dev/null +++ b/libmaple/usb/stm32f1/usb.c @@ -0,0 +1,381 @@ +/****************************************************************************** + * The MIT License + * + * Copyright (c) 2010 LeafLabs LLC. + * + * Permission is hereby granted, free of charge, to any person + * obtaining a copy of this software and associated documentation + * files (the "Software"), to deal in the Software without + * restriction, including without limitation the rights to use, copy, + * modify, merge, publish, distribute, sublicense, and/or sell copies + * of the Software, and to permit persons to whom the Software is + * furnished to do so, subject to the following conditions: + * + * The above copyright notice and this permission notice shall be included in + * all copies or substantial portions of the Software. + * + * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, + * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF + * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND + * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS + * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN + * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN + * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE + * SOFTWARE. + *****************************************************************************/ + +/** + * @file libmaple/usb/usb.c + * @brief USB support. + * + * This is a mess. What we need almost amounts to a ground-up rewrite. + */ + +#include + +#include +#include + +/* Private headers */ +#include "usb_reg_map.h" +#include "usb_lib_globals.h" + +/* usb_lib headers */ +#include "usb_type.h" +#include "usb_core.h" + +static void dispatch_ctr_lp(void); + +/* + * usb_lib/ globals + */ + +uint16 SaveTState; /* caches TX status for later use */ +uint16 SaveRState; /* caches RX status for later use */ + +/* + * Other state + */ + +typedef enum { + RESUME_EXTERNAL, + RESUME_INTERNAL, + RESUME_LATER, + RESUME_WAIT, + RESUME_START, + RESUME_ON, + RESUME_OFF, + RESUME_ESOF +} RESUME_STATE; + +struct { + volatile RESUME_STATE eState; + volatile uint8 bESOFcnt; +} ResumeS; + +static usblib_dev usblib = { + .irq_mask = USB_ISR_MSK, + .state = USB_UNCONNECTED, + .clk_id = RCC_USB, +}; +usblib_dev *USBLIB = &usblib; + +/* + * Routines + */ + +void usb_init_usblib(usblib_dev *dev, + void (**ep_int_in)(void), + void (**ep_int_out)(void)) { + rcc_clk_enable(dev->clk_id); + + dev->ep_int_in = ep_int_in; + dev->ep_int_out = ep_int_out; + + /* usb_lib/ declares both and then assumes that pFoo points to Foo + * (even though the names don't always match), which is stupid for + * all of the obvious reasons, but whatever. Here we are. */ + pInformation = &Device_Info; + pProperty = &Device_Property; + pUser_Standard_Requests = &User_Standard_Requests; + + pInformation->ControlState = 2; /* FIXME [0.0.12] use + CONTROL_STATE enumerator */ + pProperty->Init(); +} + +static void usb_suspend(void) { + uint16 cntr; + + /* TODO decide if read/modify/write is really what we want + * (e.g. usb_resume_init() reconfigures CNTR). */ + cntr = USB_BASE->CNTR; + cntr |= USB_CNTR_FSUSP; + USB_BASE->CNTR = cntr; + cntr |= USB_CNTR_LP_MODE; + USB_BASE->CNTR = cntr; + + USBLIB->state = USB_SUSPENDED; +} + +static void usb_resume_init(void) { + uint16 cntr; + + cntr = USB_BASE->CNTR; + cntr &= ~USB_CNTR_LP_MODE; + USB_BASE->CNTR = cntr; + + /* Enable interrupt lines */ + USB_BASE->CNTR = USB_ISR_MSK; +} + +static void usb_resume(RESUME_STATE eResumeSetVal) { + uint16 cntr; + + if (eResumeSetVal != RESUME_ESOF) + ResumeS.eState = eResumeSetVal; + + switch (ResumeS.eState) + { + case RESUME_EXTERNAL: + usb_resume_init(); + ResumeS.eState = RESUME_OFF; + break; + case RESUME_INTERNAL: + usb_resume_init(); + ResumeS.eState = RESUME_START; + break; + case RESUME_LATER: + ResumeS.bESOFcnt = 2; + ResumeS.eState = RESUME_WAIT; + break; + case RESUME_WAIT: + ResumeS.bESOFcnt--; + if (ResumeS.bESOFcnt == 0) + ResumeS.eState = RESUME_START; + break; + case RESUME_START: + cntr = USB_BASE->CNTR; + cntr |= USB_CNTR_RESUME; + USB_BASE->CNTR = cntr; + ResumeS.eState = RESUME_ON; + ResumeS.bESOFcnt = 10; + break; + case RESUME_ON: + ResumeS.bESOFcnt--; + if (ResumeS.bESOFcnt == 0) { + cntr = USB_BASE->CNTR; + cntr &= ~USB_CNTR_RESUME; + USB_BASE->CNTR = cntr; + ResumeS.eState = RESUME_OFF; + } + break; + case RESUME_OFF: + case RESUME_ESOF: + default: + ResumeS.eState = RESUME_OFF; + break; + } +} + +#define SUSPEND_ENABLED 1 +void __irq_usb_lp_can_rx0(void) { + uint16 istr = USB_BASE->ISTR; + + /* Use USB_ISR_MSK to only include code for bits we care about. */ + +#if (USB_ISR_MSK & USB_ISTR_RESET) + if (istr & USB_ISTR_RESET & USBLIB->irq_mask) { + USB_BASE->ISTR = ~USB_ISTR_RESET; + pProperty->Reset(); + } +#endif + +#if (USB_ISR_MSK & USB_ISTR_PMAOVR) + if (istr & ISTR_PMAOVR & USBLIB->irq_mask) { + USB_BASE->ISTR = ~USB_ISTR_PMAOVR; + } +#endif + +#if (USB_ISR_MSK & USB_ISTR_ERR) + if (istr & USB_ISTR_ERR & USBLIB->irq_mask) { + USB_BASE->ISTR = ~USB_ISTR_ERR; + } +#endif + +#if (USB_ISR_MSK & USB_ISTR_WKUP) + if (istr & USB_ISTR_WKUP & USBLIB->irq_mask) { + USB_BASE->ISTR = ~USB_ISTR_WKUP; + usb_resume(RESUME_EXTERNAL); + } +#endif + +#if (USB_ISR_MSK & USB_ISTR_SUSP) + if (istr & USB_ISTR_SUSP & USBLIB->irq_mask) { + /* check if SUSPEND is possible */ + if (SUSPEND_ENABLED) { + usb_suspend(); + } else { + /* if not possible then resume after xx ms */ + usb_resume(RESUME_LATER); + } + /* clear of the ISTR bit must be done after setting of CNTR_FSUSP */ + USB_BASE->ISTR = ~USB_ISTR_SUSP; +} +#endif + +#if (USB_ISR_MSK & USB_ISTR_SOF) + if (istr & USB_ISTR_SOF & USBLIB->irq_mask) { + USB_BASE->ISTR = ~USB_ISTR_SOF; + } +#endif + +#if (USB_ISR_MSK & USB_ISTR_ESOF) + if (istr & USB_ISTR_ESOF & USBLIB->irq_mask) { + USB_BASE->ISTR = ~USB_ISTR_ESOF; + /* resume handling timing is made with ESOFs */ + usb_resume(RESUME_ESOF); /* request without change of the machine state */ + } +#endif + + /* + * Service the correct transfer interrupt. + */ + +#if (USB_ISR_MSK & USB_ISTR_CTR) + if (istr & USB_ISTR_CTR & USBLIB->irq_mask) { + dispatch_ctr_lp(); + } +#endif +} + +/* + * Auxiliary routines + */ + +static inline uint8 dispatch_endpt_zero(uint16 istr_dir); +static inline void dispatch_endpt(uint8 ep); +static inline void set_rx_tx_status0(uint16 rx, uint16 tx); + +static void handle_setup0(void); +static void handle_in0(void); +static void handle_out0(void); + +static void dispatch_ctr_lp() { + uint16 istr; + while (((istr = USB_BASE->ISTR) & USB_ISTR_CTR) != 0) { + /* TODO WTF, figure this out: RM0008 says CTR is read-only, + * but ST's firmware claims it's clear-only, and emphasizes + * the importance of clearing it in more than one place. */ + USB_BASE->ISTR = ~USB_ISTR_CTR; + uint8 ep_id = istr & USB_ISTR_EP_ID; + if (ep_id == 0) { + /* TODO figure out why it's OK to break out of the loop + * once we're done serving endpoint zero, but not okay if + * there are multiple nonzero endpoint transfers to + * handle. */ + if (dispatch_endpt_zero(istr & USB_ISTR_DIR)) + return; + } else { + dispatch_endpt(ep_id); + } + } +} + +/* FIXME Dataflow on endpoint 0 RX/TX status is based off of ST's + * code, and is ugly/confusing in its use of SaveRState/SaveTState. + * Fixing this requires filling in handle_in0(), handle_setup0(), + * handle_out0(). */ +static inline uint8 dispatch_endpt_zero(uint16 istr_dir) { + uint32 epr = (uint16)USB_BASE->EP[0]; + + if (!(epr & (USB_EP_CTR_TX | USB_EP_SETUP | USB_EP_CTR_RX))) { + return 0; + } + + /* Cache RX/TX statuses in SaveRState/SaveTState, respectively. + * The various handle_foo0() may clobber these values + * before we reset them at the end of this routine. */ + SaveRState = epr & USB_EP_STAT_RX; + SaveTState = epr & USB_EP_STAT_TX; + + /* Set actual RX/TX statuses to NAK while we're thinking */ + set_rx_tx_status0(USB_EP_STAT_RX_NAK, USB_EP_STAT_TX_NAK); + + if (istr_dir == 0) { + /* ST RM0008: "If DIR bit=0, CTR_TX bit is set in the USB_EPnR + * register related to the interrupting endpoint. The + * interrupting transaction is of IN type (data transmitted by + * the USB peripheral to the host PC)." */ + ASSERT_FAULT(epr & USB_EP_CTR_TX); + usb_clear_ctr_tx(USB_EP0); + handle_in0(); + } else { + /* RM0008: "If DIR bit=1, CTR_RX bit or both CTR_TX/CTR_RX + * are set in the USB_EPnR register related to the + * interrupting endpoint. The interrupting transaction is of + * OUT type (data received by the USB peripheral from the host + * PC) or two pending transactions are waiting to be + * processed." + * + * [mbolivar] Note how the following control flow (which + * replicates ST's) doesn't seem to actually handle both + * interrupts that are ostensibly pending when both CTR_RX and + * CTR_TX are set. + * + * TODO sort this mess out. + */ + if (epr & USB_EP_CTR_TX) { + usb_clear_ctr_tx(USB_EP0); + handle_in0(); + } else { /* SETUP or CTR_RX */ + /* SETUP is held constant while CTR_RX is set, so clear it + * either way */ + usb_clear_ctr_rx(USB_EP0); + if (epr & USB_EP_SETUP) { + handle_setup0(); + } else { /* CTR_RX */ + handle_out0(); + } + } + } + + set_rx_tx_status0(SaveRState, SaveTState); + return 1; +} + +static inline void dispatch_endpt(uint8 ep) { + uint32 epr = USB_BASE->EP[ep]; + /* If ISTR_CTR is set and the ISTR gave us this EP_ID to handle, + * then presumably at least one of CTR_RX and CTR_TX is set, but + * again, ST's control flow allows for the possibility of neither. + * + * TODO try to find out if neither being set is possible. */ + if (epr & USB_EP_CTR_RX) { + usb_clear_ctr_rx(ep); + (USBLIB->ep_int_out[ep - 1])(); + } + if (epr & USB_EP_CTR_TX) { + usb_clear_ctr_tx(ep); + (USBLIB->ep_int_in[ep - 1])(); + } +} + +static inline void set_rx_tx_status0(uint16 rx, uint16 tx) { + usb_set_ep_rx_stat(USB_EP0, rx); + usb_set_ep_tx_stat(USB_EP0, tx); +} + +/* TODO Rip out usb_lib/ dependency from the following functions: */ + +static void handle_setup0(void) { + Setup0_Process(); +} + +static void handle_in0(void) { + In0_Process(); +} + +static void handle_out0(void) { + Out0_Process(); +} diff --git a/libmaple/usb/stm32f1/usb_cdcacm.c b/libmaple/usb/stm32f1/usb_cdcacm.c new file mode 100644 index 0000000..6ef4806 --- /dev/null +++ b/libmaple/usb/stm32f1/usb_cdcacm.c @@ -0,0 +1,762 @@ +/****************************************************************************** + * The MIT License + * + * Copyright (c) 2011 LeafLabs LLC. + * + * Permission is hereby granted, free of charge, to any person + * obtaining a copy of this software and associated documentation + * files (the "Software"), to deal in the Software without + * restriction, including without limitation the rights to use, copy, + * modify, merge, publish, distribute, sublicense, and/or sell copies + * of the Software, and to permit persons to whom the Software is + * furnished to do so, subject to the following conditions: + * + * The above copyright notice and this permission notice shall be included in + * all copies or substantial portions of the Software. + * + * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, + * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF + * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND + * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS + * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN + * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN + * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE + * SOFTWARE. + *****************************************************************************/ + +/** + * @file libmaple/usb/usb_cdcacm.c + * @brief USB CDC ACM (a.k.a. virtual serial terminal, VCOM). + * + * FIXME: this works on the STM32F1 USB peripherals, and probably no + * place else. Nonportable bits really need to be factored out, and + * the result made cleaner. + */ + +#include + +#include +#include +#include + +/* Private headers */ +#include "usb_descriptors.h" +#include "usb_lib_globals.h" +#include "usb_reg_map.h" + +/* usb_lib headers */ +#include "usb_type.h" +#include "usb_core.h" +#include "usb_def.h" + +/****************************************************************************** + ****************************************************************************** + *** + *** HACK ALERT! FIXME FIXME FIXME FIXME! + *** + *** A bunch of LeafLabs-specific configuration lives in here for + *** now. This mess REALLY needs to get teased apart, with + *** appropriate pieces moved into Wirish. + *** + ****************************************************************************** + *****************************************************************************/ + +#if !(defined(BOARD_maple) || defined(BOARD_maple_RET6) || \ + defined(BOARD_maple_mini) || defined(BOARD_maple_native)) +#warning USB CDC ACM relies on LeafLabs board-specific configuration.\ + You may have problems on non-LeafLabs boards. +#endif + +static void vcomDataTxCb(void); +static void vcomDataRxCb(void); +static uint8* vcomGetSetLineCoding(uint16); + +static void usbInit(void); +static void usbReset(void); +static RESULT usbDataSetup(uint8 request); +static RESULT usbNoDataSetup(uint8 request); +static RESULT usbGetInterfaceSetting(uint8 interface, uint8 alt_setting); +static uint8* usbGetDeviceDescriptor(uint16 length); +static uint8* usbGetConfigDescriptor(uint16 length); +static uint8* usbGetStringDescriptor(uint16 length); +static void usbSetConfiguration(void); +static void usbSetDeviceAddress(void); + +static void wait_reset(void); + +/* + * VCOM config + */ + +#define VCOM_CTRL_EPNUM 0x00 +#define VCOM_CTRL_RX_ADDR 0x40 +#define VCOM_CTRL_TX_ADDR 0x80 +#define VCOM_CTRL_EPSIZE 0x40 + +#define VCOM_TX_ENDP 1 +#define VCOM_TX_EPNUM 0x01 +#define VCOM_TX_ADDR 0xC0 +#define VCOM_TX_EPSIZE 0x40 + +#define VCOM_NOTIFICATION_ENDP 2 +#define VCOM_NOTIFICATION_EPNUM 0x02 +#define VCOM_NOTIFICATION_ADDR 0x100 +#define VCOM_NOTIFICATION_EPSIZE 0x40 + +#define VCOM_RX_ENDP 3 +#define VCOM_RX_EPNUM 0x03 +#define VCOM_RX_ADDR 0x110 +#define VCOM_RX_EPSIZE 0x40 +#define VCOM_RX_BUFLEN (VCOM_RX_EPSIZE*3) + +/* + * CDC ACM Requests + */ + +#define SET_LINE_CODING 0x20 +#define GET_LINE_CODING 0x21 +#define SET_COMM_FEATURE 0x02 +#define SET_CONTROL_LINE_STATE 0x22 +#define CONTROL_LINE_DTR (0x01) +#define CONTROL_LINE_RTS (0x02) + +/* + * Descriptors + */ + +#define USB_DEVICE_CLASS_CDC 0x02 +#define USB_DEVICE_SUBCLASS_CDC 0x00 +#define LEAFLABS_ID_VENDOR 0x1EAF +#define MAPLE_ID_PRODUCT 0x0004 +const USB_Descriptor_Device usbVcomDescriptor_Device = { + .bLength = sizeof(USB_Descriptor_Device), + .bDescriptorType = USB_DESCRIPTOR_TYPE_DEVICE, + .bcdUSB = 0x0200, + .bDeviceClass = USB_DEVICE_CLASS_CDC, + .bDeviceSubClass = USB_DEVICE_SUBCLASS_CDC, + .bDeviceProtocol = 0x00, + .bMaxPacketSize0 = 0x40, + .idVendor = LEAFLABS_ID_VENDOR, + .idProduct = MAPLE_ID_PRODUCT, + .bcdDevice = 0x0200, + .iManufacturer = 0x01, + .iProduct = 0x02, + .iSerialNumber = 0x00, + .bNumConfigurations = 0x01, +}; + +#define MAX_POWER (100 >> 1) +const USB_Descriptor_Config usbVcomDescriptor_Config = { + .Config_Header = { + .bLength = sizeof(USB_Descriptor_Config_Header), + .bDescriptorType = USB_DESCRIPTOR_TYPE_CONFIGURATION, + .wTotalLength = sizeof(USB_Descriptor_Config), + .bNumInterfaces = 0x02, + .bConfigurationValue = 0x01, + .iConfiguration = 0x00, + .bmAttributes = (USB_CONFIG_ATTR_BUSPOWERED | + USB_CONFIG_ATTR_SELF_POWERED), + .bMaxPower = MAX_POWER, + }, + + .CCI_Interface = { + .bLength = sizeof(USB_Descriptor_Interface), + .bDescriptorType = USB_DESCRIPTOR_TYPE_INTERFACE, + .bInterfaceNumber = 0x00, + .bAlternateSetting = 0x00, + .bNumEndpoints = 0x01, + .bInterfaceClass = USB_INTERFACE_CLASS_CDC, + .bInterfaceSubClass = USB_INTERFACE_SUBCLASS_CDC_ACM, + .bInterfaceProtocol = 0x01, /* Common AT Commands */ + .iInterface = 0x00, + }, + + .CDC_Functional_IntHeader = { + .bLength = CDC_FUNCTIONAL_DESCRIPTOR_SIZE(2), + .bDescriptorType = 0x24, + .SubType = 0x00, + .Data = {0x01, 0x10}, + }, + + .CDC_Functional_CallManagement = { + .bLength = CDC_FUNCTIONAL_DESCRIPTOR_SIZE(2), + .bDescriptorType = 0x24, + .SubType = 0x01, + .Data = {0x03, 0x01}, + }, + + .CDC_Functional_ACM = { + .bLength = CDC_FUNCTIONAL_DESCRIPTOR_SIZE(1), + .bDescriptorType = 0x24, + .SubType = 0x02, + .Data = {0x06}, + }, + + .CDC_Functional_Union = { + .bLength = CDC_FUNCTIONAL_DESCRIPTOR_SIZE(2), + .bDescriptorType = 0x24, + .SubType = 0x06, + .Data = {0x00, 0x01}, + }, + + .ManagementEndpoint = { + .bLength = sizeof(USB_Descriptor_Endpoint), + .bDescriptorType = USB_DESCRIPTOR_TYPE_ENDPOINT, + .bEndpointAddress = (USB_DESCRIPTOR_ENDPOINT_IN | + VCOM_NOTIFICATION_EPNUM), + .bmAttributes = EP_TYPE_INTERRUPT, + .wMaxPacketSize = VCOM_NOTIFICATION_EPSIZE, + .bInterval = 0xFF, + }, + + .DCI_Interface = { + .bLength = sizeof(USB_Descriptor_Interface), + .bDescriptorType = USB_DESCRIPTOR_TYPE_INTERFACE, + .bInterfaceNumber = 0x01, + .bAlternateSetting = 0x00, + .bNumEndpoints = 0x02, + .bInterfaceClass = USB_INTERFACE_CLASS_DIC, + .bInterfaceSubClass = 0x00, /* None */ + .bInterfaceProtocol = 0x00, /* None */ + .iInterface = 0x00, + }, + + .DataOutEndpoint = { + .bLength = sizeof(USB_Descriptor_Endpoint), + .bDescriptorType = USB_DESCRIPTOR_TYPE_ENDPOINT, + .bEndpointAddress = (USB_DESCRIPTOR_ENDPOINT_OUT | VCOM_RX_EPNUM), + .bmAttributes = EP_TYPE_BULK, + .wMaxPacketSize = VCOM_RX_EPSIZE, + .bInterval = 0x00, + }, + + .DataInEndpoint = { + .bLength = sizeof(USB_Descriptor_Endpoint), + .bDescriptorType = USB_DESCRIPTOR_TYPE_ENDPOINT, + .bEndpointAddress = (USB_DESCRIPTOR_ENDPOINT_IN | VCOM_TX_EPNUM), + .bmAttributes = EP_TYPE_BULK, + .wMaxPacketSize = VCOM_TX_EPSIZE, + .bInterval = 0x00, + }, +}; + +/* + String Identifiers: + + we may choose to specify any or none of the following string + identifiers: + + iManufacturer: LeafLabs + iProduct: Maple + iSerialNumber: NONE + iConfiguration: NONE + iInterface(CCI): NONE + iInterface(DCI): NONE + + additionally we must provide the unicode language identifier, + which is 0x0409 for US English +*/ + +const uint8 usbVcomDescriptor_LangID[USB_DESCRIPTOR_STRING_LEN(1)] = { + USB_DESCRIPTOR_STRING_LEN(1), + USB_DESCRIPTOR_TYPE_STRING, + 0x09, + 0x04, +}; + +const uint8 usbVcomDescriptor_iManufacturer[USB_DESCRIPTOR_STRING_LEN(8)] = { + USB_DESCRIPTOR_STRING_LEN(8), + USB_DESCRIPTOR_TYPE_STRING, + 'L', 0, 'e', 0, 'a', 0, 'f', 0, + 'L', 0, 'a', 0, 'b', 0, 's', 0, +}; + +const uint8 usbVcomDescriptor_iProduct[USB_DESCRIPTOR_STRING_LEN(8)] = { + USB_DESCRIPTOR_STRING_LEN(8), + USB_DESCRIPTOR_TYPE_STRING, + 'M', 0, 'a', 0, 'p', 0, 'l', 0, + 'e', 0, ' ', 0, ' ', 0, ' ', 0 +}; + +ONE_DESCRIPTOR Device_Descriptor = { + (uint8*)&usbVcomDescriptor_Device, + sizeof(USB_Descriptor_Device) +}; + +ONE_DESCRIPTOR Config_Descriptor = { + (uint8*)&usbVcomDescriptor_Config, + sizeof(USB_Descriptor_Config) +}; + +ONE_DESCRIPTOR String_Descriptor[3] = { + {(uint8*)&usbVcomDescriptor_LangID, USB_DESCRIPTOR_STRING_LEN(1)}, + {(uint8*)&usbVcomDescriptor_iManufacturer,USB_DESCRIPTOR_STRING_LEN(8)}, + {(uint8*)&usbVcomDescriptor_iProduct, USB_DESCRIPTOR_STRING_LEN(8)} +}; + +/* + * Etc. + */ + +typedef enum { + DTR_UNSET, + DTR_HIGH, + DTR_NEGEDGE, + DTR_LOW +} RESET_STATE; + +typedef struct { + uint32 bitrate; + uint8 format; + uint8 paritytype; + uint8 datatype; +} USB_Line_Coding; + +uint8 last_request = 0; +USB_Line_Coding line_coding = { + .bitrate = 115200, + .format = 0x00, /* stop bits-1 */ + .paritytype = 0x00, + .datatype = 0x08 +}; +uint8 vcomBufferRx[VCOM_RX_BUFLEN]; +volatile uint32 countTx = 0; +volatile uint32 recvBufIn = 0; +volatile uint32 recvBufOut = 0; +volatile uint32 maxNewBytes = VCOM_RX_BUFLEN; +volatile uint32 newBytes = 0; +RESET_STATE reset_state = DTR_UNSET; +uint8 line_dtr_rts = 0; + +/* + * Endpoint callbacks + */ + +static void (*ep_int_in[7])(void) = + {vcomDataTxCb, + NOP_Process, + NOP_Process, + NOP_Process, + NOP_Process, + NOP_Process, + NOP_Process}; + +static void (*ep_int_out[7])(void) = + {NOP_Process, + NOP_Process, + vcomDataRxCb, + NOP_Process, + NOP_Process, + NOP_Process, + NOP_Process}; + +/* + * Globals required by usb_lib/ + */ + +#define NUM_ENDPTS 0x04 +DEVICE Device_Table = { + .Total_Endpoint = NUM_ENDPTS, + .Total_Configuration = 1 +}; + +#define MAX_PACKET_SIZE 0x40 /* 64B, maximum for USB FS Devices */ +DEVICE_PROP Device_Property = { + .Init = usbInit, + .Reset = usbReset, + .Process_Status_IN = NOP_Process, + .Process_Status_OUT = NOP_Process, + .Class_Data_Setup = usbDataSetup, + .Class_NoData_Setup = usbNoDataSetup, + .Class_Get_Interface_Setting = usbGetInterfaceSetting, + .GetDeviceDescriptor = usbGetDeviceDescriptor, + .GetConfigDescriptor = usbGetConfigDescriptor, + .GetStringDescriptor = usbGetStringDescriptor, + .RxEP_buffer = NULL, + .MaxPacketSize = MAX_PACKET_SIZE +}; + +USER_STANDARD_REQUESTS User_Standard_Requests = { + .User_GetConfiguration = NOP_Process, + .User_SetConfiguration = usbSetConfiguration, + .User_GetInterface = NOP_Process, + .User_SetInterface = NOP_Process, + .User_GetStatus = NOP_Process, + .User_ClearFeature = NOP_Process, + .User_SetEndPointFeature = NOP_Process, + .User_SetDeviceFeature = NOP_Process, + .User_SetDeviceAddress = usbSetDeviceAddress +}; + +/* + * CDC ACM interface + */ + +void usb_cdcacm_enable(gpio_dev *disc_dev, uint8 disc_bit) { + /* Present ourselves to the host */ + gpio_set_mode(disc_dev, disc_bit, GPIO_OUTPUT_PP); + gpio_write_bit(disc_dev, disc_bit, 0); // presents us to the host + + /* initialize USB peripheral */ + usb_init_usblib(USBLIB, ep_int_in, ep_int_out); +} + +void usb_cdcacm_disable(gpio_dev *disc_dev, uint8 disc_bit) { + // These are just guesses about how to do this, but it seems to work. + // TODO: verify this with USB spec + nvic_irq_disable(NVIC_USB_LP_CAN_RX0); + gpio_write_bit(disc_dev, disc_bit, 1); +} + +void usb_cdcacm_putc(char ch) { + while (!usb_cdcacm_tx((uint8*)&ch, 1)) + ; +} + +/* This function is non-blocking. + * + * It copies data from a usercode buffer into the USB peripheral TX + * buffer and return the number placed in that buffer. + */ +uint32 usb_cdcacm_tx(const uint8* buf, uint32 len) { + /* Last transmission hasn't finished, abort */ + if (countTx) { + return 0; + } + + // We can only put VCOM_TX_EPSIZE bytes in the buffer + /* FIXME then why are we only copying half as many? */ + if (len > VCOM_TX_EPSIZE / 2) { + len = VCOM_TX_EPSIZE / 2; + } + + // Try to load some bytes if we can + if (len) { + usb_copy_to_pma(buf, len, VCOM_TX_ADDR); + usb_set_ep_tx_count(VCOM_TX_ENDP, len); + countTx += len; + usb_set_ep_tx_stat(VCOM_TX_ENDP, USB_EP_STAT_TX_VALID); + } + + return len; +} + +/* returns the number of available bytes are in the recv FIFO */ +uint32 usb_cdcacm_data_available(void) { + return newBytes; +} + +uint16 usb_cdcacm_get_pending() { + return countTx; +} + +/* Nonblocking byte receive. + * + * Copies up to len bytes from our private data buffer (*NOT* the PMA) + * into buf and deq's the FIFO. */ +uint32 usb_cdcacm_rx(uint8* buf, uint32 len) { + static int offset = 0; + int i; + + if (len > newBytes) { + len = newBytes; + } + + for (i = 0; i < len; i++) { + buf[i] = vcomBufferRx[i + offset]; + } + + newBytes -= len; + offset += len; + + /* Re-enable the RX endpoint, which we had set to receive 0 bytes */ + if (newBytes == 0) { + usb_set_ep_rx_count(VCOM_RX_ENDP, VCOM_RX_EPSIZE); + usb_set_ep_rx_stat(VCOM_RX_ENDP, USB_EP_STAT_RX_VALID); + offset = 0; + } + + return len; +} + +uint8 usb_cdcacm_get_dtr() { + return ((line_dtr_rts & CONTROL_LINE_DTR) != 0); +} + +uint8 usb_cdcacm_get_rts() { + return ((line_dtr_rts & CONTROL_LINE_RTS) != 0); +} + +/* + * Callbacks + */ + +static void vcomDataTxCb(void) { + /* assumes tx transactions are atomic 64 bytes (nearly certain they are) */ + countTx = 0; +} + +#define EXC_RETURN 0xFFFFFFF9 +#define DEFAULT_CPSR 0x61000000 +static void vcomDataRxCb(void) { + /* FIXME this is mad buggy */ + + /* setEPRxCount on the previous cycle should garuntee + we havnt received more bytes than we can fit */ + newBytes = usb_get_ep_rx_count(VCOM_RX_ENDP); + usb_set_ep_rx_stat(VCOM_RX_ENDP, USB_EP_STAT_RX_NAK); + + /* magic number, {0x31, 0x45, 0x41, 0x46} is "1EAF" */ + uint8 chkBuf[4]; + uint8 cmpBuf[4] = {0x31, 0x45, 0x41, 0x46}; + if (reset_state == DTR_NEGEDGE) { + reset_state = DTR_LOW; + + if (newBytes >= 4) { + unsigned int target = (unsigned int)wait_reset | 0x1; + + usb_copy_from_pma(chkBuf, 4, VCOM_RX_ADDR); + + int i; + USB_Bool cmpMatch = TRUE; + for (i = 0; i < 4; i++) { + if (chkBuf[i] != cmpBuf[i]) { + cmpMatch = FALSE; + } + } + + if (cmpMatch) { + asm volatile("mov r0, %[stack_top] \n\t" // Reset stack + "mov sp, r0 \n\t" + "mov r0, #1 \n\t" + "mov r1, %[target_addr] \n\t" + "mov r2, %[cpsr] \n\t" + "push {r2} \n\t" // Fake xPSR + "push {r1} \n\t" // PC target addr + "push {r0} \n\t" // Fake LR + "push {r0} \n\t" // Fake R12 + "push {r0} \n\t" // Fake R3 + "push {r0} \n\t" // Fake R2 + "push {r0} \n\t" // Fake R1 + "push {r0} \n\t" // Fake R0 + "mov lr, %[exc_return] \n\t" + "bx lr" + : + : [stack_top] "r" (STACK_TOP), + [target_addr] "r" (target), + [exc_return] "r" (EXC_RETURN), + [cpsr] "r" (DEFAULT_CPSR) + : "r0", "r1", "r2"); + /* should never get here */ + } + } + } + + usb_copy_from_pma(vcomBufferRx, newBytes, VCOM_RX_ADDR); +} + +static uint8* vcomGetSetLineCoding(uint16 length) { + if (length == 0) { + pInformation->Ctrl_Info.Usb_wLength = sizeof(USB_Line_Coding); + } + return (uint8*)&line_coding; +} + +static void usbInit(void) { + pInformation->Current_Configuration = 0; + + USB_BASE->CNTR = USB_CNTR_FRES; + + USBLIB->irq_mask = 0; + USB_BASE->CNTR = USBLIB->irq_mask; + USB_BASE->ISTR = 0; + USBLIB->irq_mask = USB_CNTR_RESETM | USB_CNTR_SUSPM | USB_CNTR_WKUPM; + USB_BASE->CNTR = USBLIB->irq_mask; + + USB_BASE->ISTR = 0; + USBLIB->irq_mask = USB_ISR_MSK; + USB_BASE->CNTR = USBLIB->irq_mask; + + nvic_irq_enable(NVIC_USB_LP_CAN_RX0); + USBLIB->state = USB_UNCONNECTED; +} + +/* choose addresses to give endpoints the max 64 byte buffers */ +#define BTABLE_ADDRESS 0x00 +static void usbReset(void) { + pInformation->Current_Configuration = 0; + + /* current feature is current bmAttributes */ + pInformation->Current_Feature = (USB_CONFIG_ATTR_BUSPOWERED | + USB_CONFIG_ATTR_SELF_POWERED); + + USB_BASE->BTABLE = BTABLE_ADDRESS; + + /* setup control endpoint 0 */ + usb_set_ep_type(USB_EP0, USB_EP_EP_TYPE_CONTROL); + usb_set_ep_tx_stat(USB_EP0, USB_EP_STAT_TX_STALL); + usb_set_ep_rx_addr(USB_EP0, VCOM_CTRL_RX_ADDR); + usb_set_ep_tx_addr(USB_EP0, VCOM_CTRL_TX_ADDR); + usb_clear_status_out(USB_EP0); + + usb_set_ep_rx_count(USB_EP0, pProperty->MaxPacketSize); + usb_set_ep_rx_stat(USB_EP0, USB_EP_STAT_RX_VALID); + + /* setup management endpoint 1 */ + usb_set_ep_type(VCOM_NOTIFICATION_ENDP, USB_EP_EP_TYPE_INTERRUPT); + usb_set_ep_tx_addr(VCOM_NOTIFICATION_ENDP, VCOM_NOTIFICATION_ADDR); + usb_set_ep_tx_stat(VCOM_NOTIFICATION_ENDP, USB_EP_STAT_TX_NAK); + usb_set_ep_rx_stat(VCOM_NOTIFICATION_ENDP, USB_EP_STAT_RX_DISABLED); + + /* TODO figure out differences in style between RX/TX EP setup */ + + /* set up data endpoint OUT (RX) */ + usb_set_ep_type(VCOM_RX_ENDP, USB_EP_EP_TYPE_BULK); + usb_set_ep_rx_addr(VCOM_RX_ENDP, 0x110); + usb_set_ep_rx_count(VCOM_RX_ENDP, 64); + usb_set_ep_rx_stat(VCOM_RX_ENDP, USB_EP_STAT_RX_VALID); + + /* set up data endpoint IN (TX) */ + usb_set_ep_type(VCOM_TX_ENDP, USB_EP_EP_TYPE_BULK); + usb_set_ep_tx_addr(VCOM_TX_ENDP, VCOM_TX_ADDR); + usb_set_ep_tx_stat(VCOM_TX_ENDP, USB_EP_STAT_TX_NAK); + usb_set_ep_rx_stat(VCOM_TX_ENDP, USB_EP_STAT_RX_DISABLED); + + USBLIB->state = USB_ATTACHED; + SetDeviceAddress(0); + + /* reset the rx fifo */ + recvBufIn = 0; + recvBufOut = 0; + maxNewBytes = VCOM_RX_EPSIZE; + countTx = 0; +} + +static RESULT usbDataSetup(uint8 request) { + uint8 *(*CopyRoutine)(uint16); + CopyRoutine = NULL; + + if (Type_Recipient == (CLASS_REQUEST | INTERFACE_RECIPIENT)) { + switch (request) { + case (GET_LINE_CODING): + CopyRoutine = vcomGetSetLineCoding; + last_request = GET_LINE_CODING; + break; + case (SET_LINE_CODING): + CopyRoutine = vcomGetSetLineCoding; + last_request = SET_LINE_CODING; + break; + default: + break; + } + } + + if (CopyRoutine == NULL) { + return USB_UNSUPPORT; + } + + pInformation->Ctrl_Info.CopyData = CopyRoutine; + pInformation->Ctrl_Info.Usb_wOffset = 0; + (*CopyRoutine)(0); + return USB_SUCCESS; +} + +static RESULT usbNoDataSetup(uint8 request) { + uint8 new_signal; + + /* we support set com feature but dont handle it */ + if (Type_Recipient == (CLASS_REQUEST | INTERFACE_RECIPIENT)) { + + switch (request) { + case (SET_COMM_FEATURE): + return USB_SUCCESS; + case (SET_CONTROL_LINE_STATE): + /* to reset the board, pull both dtr and rts low + then pulse dtr by itself */ + new_signal = (pInformation->USBwValues.bw.bb0 & + (CONTROL_LINE_DTR | CONTROL_LINE_RTS)); + line_dtr_rts = new_signal & 0x03; + + switch (reset_state) { + /* no default, covered enum */ + case DTR_UNSET: + if ((new_signal & CONTROL_LINE_DTR) == 0 ) { + reset_state = DTR_LOW; + } else { + reset_state = DTR_HIGH; + } + break; + + case DTR_HIGH: + if ((new_signal & CONTROL_LINE_DTR) == 0 ) { + reset_state = DTR_NEGEDGE; + } else { + reset_state = DTR_HIGH; + } + break; + + case DTR_NEGEDGE: + if ((new_signal & CONTROL_LINE_DTR) == 0 ) { + reset_state = DTR_LOW; + } else { + reset_state = DTR_HIGH; + } + break; + + case DTR_LOW: + if ((new_signal & CONTROL_LINE_DTR) == 0 ) { + reset_state = DTR_LOW; + } else { + reset_state = DTR_HIGH; + } + break; + } + + return USB_SUCCESS; + } + } + return USB_UNSUPPORT; +} + +static RESULT usbGetInterfaceSetting(uint8 interface, uint8 alt_setting) { + if (alt_setting > 0) { + return USB_UNSUPPORT; + } else if (interface > 1) { + return USB_UNSUPPORT; + } + + return USB_SUCCESS; +} + +static uint8* usbGetDeviceDescriptor(uint16 length) { + return Standard_GetDescriptorData(length, &Device_Descriptor); +} + +static uint8* usbGetConfigDescriptor(uint16 length) { + return Standard_GetDescriptorData(length, &Config_Descriptor); +} + +static uint8* usbGetStringDescriptor(uint16 length) { + uint8 wValue0 = pInformation->USBwValue0; + + if (wValue0 > 2) { + return NULL; + } + return Standard_GetDescriptorData(length, &String_Descriptor[wValue0]); +} + +static void usbSetConfiguration(void) { + if (pInformation->Current_Configuration != 0) { + USBLIB->state = USB_CONFIGURED; + } +} + +static void usbSetDeviceAddress(void) { + USBLIB->state = USB_ADDRESSED; +} + +#define RESET_DELAY 100000 +static void wait_reset(void) { + delay_us(RESET_DELAY); + nvic_sys_reset(); +} diff --git a/libmaple/usb/stm32f1/usb_descriptors.h b/libmaple/usb/stm32f1/usb_descriptors.h new file mode 100644 index 0000000..9bcb2b6 --- /dev/null +++ b/libmaple/usb/stm32f1/usb_descriptors.h @@ -0,0 +1,148 @@ +/****************************************************************************** + * The MIT License + * + * Copyright (c) 2010 LeafLabs LLC. + * + * Permission is hereby granted, free of charge, to any person + * obtaining a copy of this software and associated documentation + * files (the "Software"), to deal in the Software without + * restriction, including without limitation the rights to use, copy, + * modify, merge, publish, distribute, sublicense, and/or sell copies + * of the Software, and to permit persons to whom the Software is + * furnished to do so, subject to the following conditions: + * + * The above copyright notice and this permission notice shall be + * included in all copies or substantial portions of the Software. + * + * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, + * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF + * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND + * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS + * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN + * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN + * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE + * SOFTWARE. + *****************************************************************************/ + +#ifndef _USB_DESCRIPTORS_H_ +#define _USB_DESCRIPTORS_H_ + +#include + +#define USB_DESCRIPTOR_TYPE_DEVICE 0x01 +#define USB_DESCRIPTOR_TYPE_CONFIGURATION 0x02 +#define USB_DESCRIPTOR_TYPE_STRING 0x03 +#define USB_DESCRIPTOR_TYPE_INTERFACE 0x04 +#define USB_DESCRIPTOR_TYPE_ENDPOINT 0x05 + +#define USB_DEVICE_CLASS_CDC 0x02 +#define USB_DEVICE_SUBCLASS_CDC 0x00 +#define USB_INTERFACE_CLASS_CDC 0x02 +/* CDC Abstract Control Model */ +#define USB_INTERFACE_SUBCLASS_CDC_ACM 0x02 +#define USB_INTERFACE_CLASS_DIC 0x0A + +#define USB_CONFIG_ATTR_BUSPOWERED 0b10000000 +#define USB_CONFIG_ATTR_SELF_POWERED 0b11000000 + +#define EP_TYPE_INTERRUPT 0x03 +#define EP_TYPE_BULK 0x02 + +#define USB_DESCRIPTOR_ENDPOINT_IN 0x80 +#define USB_DESCRIPTOR_ENDPOINT_OUT 0x00 + +#define USB_DESCRIPTOR_STRING_LEN(x) (2 + (x << 1)) + +#if defined(__cplusplus) +extern "C" { +#endif + +#define USB_DESCRIPTOR_STRING(len) \ + struct { \ + uint8 bLength; \ + uint8 bDescriptorType; \ + uint16 bString[len]; \ + } __packed + +#define CDC_FUNCTIONAL_DESCRIPTOR_SIZE(DataSize) (3 + DataSize) +#define CDC_FUNCTIONAL_DESCRIPTOR(DataSize) \ + struct { \ + uint8 bLength; \ + uint8 bDescriptorType; \ + uint8 SubType; \ + uint8 Data[DataSize]; \ + } __packed + +typedef struct { + uint8 bLength; + uint8 bDescriptorType; + uint16 bcdUSB; + uint8 bDeviceClass; + uint8 bDeviceSubClass; + uint8 bDeviceProtocol; + uint8 bMaxPacketSize0; + uint16 idVendor; + uint16 idProduct; + uint16 bcdDevice; + uint8 iManufacturer; + uint8 iProduct; + uint8 iSerialNumber; + uint8 bNumConfigurations; +} __packed USB_Descriptor_Device; + +typedef struct { + uint8 bLength; + uint8 bDescriptorType; + uint16 wTotalLength; + uint8 bNumInterfaces; + uint8 bConfigurationValue; + uint8 iConfiguration; + uint8 bmAttributes; + uint8 bMaxPower; +} __packed USB_Descriptor_Config_Header; + +typedef struct { + uint8 bLength; + uint8 bDescriptorType; + uint8 bInterfaceNumber; + uint8 bAlternateSetting; + uint8 bNumEndpoints; + uint8 bInterfaceClass; + uint8 bInterfaceSubClass; + uint8 bInterfaceProtocol; + uint8 iInterface; +} __packed USB_Descriptor_Interface; + +typedef struct { + uint8 bLength; + uint8 bDescriptorType; + uint8 bEndpointAddress; + uint8 bmAttributes; + uint16 wMaxPacketSize; + uint8 bInterval; +} __packed USB_Descriptor_Endpoint; + +typedef struct { + USB_Descriptor_Config_Header Config_Header; + USB_Descriptor_Interface CCI_Interface; + CDC_FUNCTIONAL_DESCRIPTOR(2) CDC_Functional_IntHeader; + CDC_FUNCTIONAL_DESCRIPTOR(2) CDC_Functional_CallManagement; + CDC_FUNCTIONAL_DESCRIPTOR(1) CDC_Functional_ACM; + CDC_FUNCTIONAL_DESCRIPTOR(2) CDC_Functional_Union; + USB_Descriptor_Endpoint ManagementEndpoint; + USB_Descriptor_Interface DCI_Interface; + USB_Descriptor_Endpoint DataOutEndpoint; + USB_Descriptor_Endpoint DataInEndpoint; +} __packed USB_Descriptor_Config; + +typedef struct { + uint8 bLength; + uint8 bDescriptorType; + uint16 bString[]; +} USB_Descriptor_String; + +#if defined(__cplusplus) +} +#endif + +#endif diff --git a/libmaple/usb/stm32f1/usb_lib_globals.h b/libmaple/usb/stm32f1/usb_lib_globals.h new file mode 100644 index 0000000..1cd2754 --- /dev/null +++ b/libmaple/usb/stm32f1/usb_lib_globals.h @@ -0,0 +1,55 @@ +/****************************************************************************** + * The MIT License + * + * Copyright (c) 2011 LeafLabs LLC. + * + * Permission is hereby granted, free of charge, to any person + * obtaining a copy of this software and associated documentation + * files (the "Software"), to deal in the Software without + * restriction, including without limitation the rights to use, copy, + * modify, merge, publish, distribute, sublicense, and/or sell copies + * of the Software, and to permit persons to whom the Software is + * furnished to do so, subject to the following conditions: + * + * The above copyright notice and this permission notice shall be included in + * all copies or substantial portions of the Software. + * + * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, + * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF + * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND + * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS + * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN + * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN + * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE + * SOFTWARE. + *****************************************************************************/ + +#ifndef _USB_LIB_GLOBALS_H_ +#define _USB_LIB_GLOBALS_H_ + +/* usb_lib headers */ +#include "usb_type.h" +#include "usb_core.h" + +#ifdef __cplusplus +extern "C" { +#endif + +extern USER_STANDARD_REQUESTS User_Standard_Requests; +extern USER_STANDARD_REQUESTS *pUser_Standard_Requests; + +extern DEVICE_PROP Device_Property; +extern DEVICE_PROP *pProperty; + +extern DEVICE_INFO Device_Info; +extern DEVICE_INFO *pInformation; + +extern DEVICE Device_Table; +extern u16 SaveRState; +extern u16 SaveTState; + +#ifdef __cplusplus +} +#endif + +#endif diff --git a/libmaple/usb/stm32f1/usb_reg_map.c b/libmaple/usb/stm32f1/usb_reg_map.c new file mode 100644 index 0000000..75562e1 --- /dev/null +++ b/libmaple/usb/stm32f1/usb_reg_map.c @@ -0,0 +1,79 @@ +/****************************************************************************** + * The MIT License + * + * Copyright (c) 2011 LeafLabs, LLC. + * + * Permission is hereby granted, free of charge, to any person + * obtaining a copy of this software and associated documentation + * files (the "Software"), to deal in the Software without + * restriction, including without limitation the rights to use, copy, + * modify, merge, publish, distribute, sublicense, and/or sell copies + * of the Software, and to permit persons to whom the Software is + * furnished to do so, subject to the following conditions: + * + * The above copyright notice and this permission notice shall be + * included in all copies or substantial portions of the Software. + * + * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, + * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF + * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND + * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS + * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN + * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN + * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE + * SOFTWARE. + *****************************************************************************/ + +#include "usb_reg_map.h" + +/* TODO these could use some improvement; they're fairly + * straightforward ports of the analogous ST code. The PMA blit + * routines in particular are obvious targets for performance + * measurement and tuning. */ + +void usb_copy_to_pma(const uint8 *buf, uint16 len, uint16 pma_offset) { + uint16 *dst = (uint16*)usb_pma_ptr(pma_offset); + uint16 n = len >> 1; + uint16 i; + for (i = 0; i < n; i++) { + *dst = (uint16)(*buf) | *(buf + 1) << 8; + buf += 2; + dst += 2; + } + if (len & 1) { + *dst = *buf; + } +} + +void usb_copy_from_pma(uint8 *buf, uint16 len, uint16 pma_offset) { + uint32 *src = (uint32*)usb_pma_ptr(pma_offset); + uint16 *dst = (uint16*)buf; + uint16 n = len >> 1; + uint16 i; + for (i = 0; i < n; i++) { + *dst++ = *src++; + } + if (len & 1) { + *dst = *src & 0xFF; + } +} + +void usb_set_ep_rx_count(uint8 ep, uint16 count) { + uint32 *rxc = usb_ep_rx_count_ptr(ep); + uint16 nblocks; + if (count > 62) { + /* use 32-byte memory block size */ + nblocks = count >> 5; + if ((count & 0x1F) == 0) { + nblocks--; + } + *rxc = (nblocks << 10) | 0x8000; + } else { + /* use 2-byte memory block size */ + nblocks = count >> 1; + if ((count & 0x1) != 0) { + nblocks++; + } + *rxc = nblocks << 10; + } +} diff --git a/libmaple/usb/stm32f1/usb_reg_map.h b/libmaple/usb/stm32f1/usb_reg_map.h new file mode 100644 index 0000000..ce80842 --- /dev/null +++ b/libmaple/usb/stm32f1/usb_reg_map.h @@ -0,0 +1,433 @@ +/****************************************************************************** + * The MIT License + * + * Copyright (c) 2011 LeafLabs, LLC. + * + * Permission is hereby granted, free of charge, to any person + * obtaining a copy of this software and associated documentation + * files (the "Software"), to deal in the Software without + * restriction, including without limitation the rights to use, copy, + * modify, merge, publish, distribute, sublicense, and/or sell copies + * of the Software, and to permit persons to whom the Software is + * furnished to do so, subject to the following conditions: + * + * The above copyright notice and this permission notice shall be + * included in all copies or substantial portions of the Software. + * + * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, + * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF + * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND + * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS + * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN + * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN + * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE + * SOFTWARE. + *****************************************************************************/ + +#include +#include + +#ifndef _USB_REG_MAP_H_ +#define _USB_REG_MAP_H_ + +/* TODO: + * - Pick one of "endp", "ep" "endpt" + */ + +/* + * Register map and base pointer + */ + +#define USB_NR_EP_REGS 8 + +/** USB register map type */ +typedef struct usb_reg_map { + __io uint32 EP[USB_NR_EP_REGS]; /**< Endpoint registers */ + const uint32 RESERVED[8]; /**< Reserved */ + __io uint32 CNTR; /**< Control register */ + __io uint32 ISTR; /**< Interrupt status register */ + __io uint32 FNR; /**< Frame number register */ + __io uint32 DADDR; /**< Device address */ + __io uint32 BTABLE; /**< @brief Buffer table address + * + * Address offset within the USB + * packet memory area which points + * to the base of the buffer + * descriptor table. Must be + * aligned to an 8 byte boundary. + */ +} usb_reg_map; + +/** USB register map base pointer */ +#define USB_BASE ((struct usb_reg_map*)0x40005C00) + +/* + * Register bit definitions + */ + +/* Endpoint registers (USB_EPnR) */ + +#define USB_EP_CTR_RX_BIT 15 +#define USB_EP_DTOG_RX_BIT 14 +#define USB_EP_SETUP_BIT 11 +#define USB_EP_EP_KIND_BIT 8 +#define USB_EP_CTR_TX_BIT 7 +#define USB_EP_DTOG_TX_BIT 6 + +#define USB_EP_CTR_RX BIT(USB_EP_CTR_RX_BIT) +#define USB_EP_DTOG_RX BIT(USB_EP_DTOG_RX_BIT) +#define USB_EP_STAT_RX (0x3 << 12) +#define USB_EP_STAT_RX_DISABLED (0x0 << 12) +#define USB_EP_STAT_RX_STALL (0x1 << 12) +#define USB_EP_STAT_RX_NAK (0x2 << 12) +#define USB_EP_STAT_RX_VALID (0x3 << 12) +#define USB_EP_SETUP BIT(USB_EP_SETUP_BIT) +#define USB_EP_EP_TYPE (0x3 << 9) +#define USB_EP_EP_TYPE_BULK (0x0 << 9) +#define USB_EP_EP_TYPE_CONTROL (0x1 << 9) +#define USB_EP_EP_TYPE_ISO (0x2 << 9) +#define USB_EP_EP_TYPE_INTERRUPT (0x3 << 9) +#define USB_EP_EP_KIND BIT(USB_EP_EP_KIND_BIT) +#define USB_EP_CTR_TX BIT(USB_EP_CTR_TX_BIT) +#define USB_EP_DTOG_TX BIT(USB_EP_DTOG_TX_BIT) +#define USB_EP_STAT_TX (0x3 << 4) +#define USB_EP_STAT_TX_DISABLED (0x0 << 4) +#define USB_EP_STAT_TX_STALL (0x1 << 4) +#define USB_EP_STAT_TX_NAK (0x2 << 4) +#define USB_EP_STAT_TX_VALID (0x3 << 4) +#define USB_EP_EA 0xF + +/* Control register (USB_CNTR) */ + +#define USB_CNTR_CTRM_BIT 15 +#define USB_CNTR_PMAOVERM_BIT 14 +#define USB_CNTR_ERRM_BIT 13 +#define USB_CNTR_WKUPM_BIT 12 +#define USB_CNTR_SUSPM_BIT 11 +#define USB_CNTR_RESETM_BIT 10 +#define USB_CNTR_SOFM_BIT 9 +#define USB_CNTR_ESOFM_BIT 8 +#define USB_CNTR_RESUME_BIT 4 +#define USB_CNTR_FSUSP_BIT 3 +#define USB_CNTR_LP_MODE_BIT 2 +#define USB_CNTR_PDWN_BIT 1 +#define USB_CNTR_FRES_BIT 0 + +#define USB_CNTR_CTRM BIT(USB_CNTR_CTRM_BIT) +#define USB_CNTR_PMAOVERM BIT(USB_CNTR_PMAOVERM_BIT) +#define USB_CNTR_ERRM BIT(USB_CNTR_ERRM_BIT) +#define USB_CNTR_WKUPM BIT(USB_CNTR_WKUPM_BIT) +#define USB_CNTR_SUSPM BIT(USB_CNTR_SUSPM_BIT) +#define USB_CNTR_RESETM BIT(USB_CNTR_RESETM_BIT) +#define USB_CNTR_SOFM BIT(USB_CNTR_SOFM_BIT) +#define USB_CNTR_ESOFM BIT(USB_CNTR_ESOFM_BIT) +#define USB_CNTR_RESUME BIT(USB_CNTR_RESUME_BIT) +#define USB_CNTR_FSUSP BIT(USB_CNTR_FSUSP_BIT) +#define USB_CNTR_LP_MODE BIT(USB_CNTR_LP_MODE_BIT) +#define USB_CNTR_PDWN BIT(USB_CNTR_PDWN_BIT) +#define USB_CNTR_FRES BIT(USB_CNTR_FRES_BIT) + +/* Interrupt status register (USB_ISTR) */ + +#define USB_ISTR_CTR_BIT 15 +#define USB_ISTR_PMAOVR_BIT 14 +#define USB_ISTR_ERR_BIT 13 +#define USB_ISTR_WKUP_BIT 12 +#define USB_ISTR_SUSP_BIT 11 +#define USB_ISTR_RESET_BIT 10 +#define USB_ISTR_SOF_BIT 9 +#define USB_ISTR_ESOF_BIT 8 +#define USB_ISTR_DIR_BIT 4 + +#define USB_ISTR_CTR BIT(USB_ISTR_CTR_BIT) +#define USB_ISTR_PMAOVR BIT(USB_ISTR_PMAOVR_BIT) +#define USB_ISTR_ERR BIT(USB_ISTR_ERR_BIT) +#define USB_ISTR_WKUP BIT(USB_ISTR_WKUP_BIT) +#define USB_ISTR_SUSP BIT(USB_ISTR_SUSP_BIT) +#define USB_ISTR_RESET BIT(USB_ISTR_RESET_BIT) +#define USB_ISTR_SOF BIT(USB_ISTR_SOF_BIT) +#define USB_ISTR_ESOF BIT(USB_ISTR_ESOF_BIT) +#define USB_ISTR_DIR BIT(USB_ISTR_DIR_BIT) +#define USB_ISTR_EP_ID 0xF + +/* Frame number register (USB_FNR) */ + +#define USB_FNR_RXDP_BIT 15 +#define USB_FNR_RXDM_BIT 14 +#define USB_FNR_LCK_BIT 13 + +#define USB_FNR_RXDP BIT(USB_FNR_RXDP_BIT) +#define USB_FNR_RXDM BIT(USB_FNR_RXDM_BIT) +#define USB_FNR_LCK BIT(USB_FNR_LCK_BIT) +#define USB_FNR_LSOF (0x3 << 11) +#define USB_FNR_FN 0x7FF + +/* Device address (USB_DADDR) */ + +#define USB_DADDR_EF_BIT 7 +#define USB_DADDR_ADD6_BIT 6 +#define USB_DADDR_ADD5_BIT 5 +#define USB_DADDR_ADD4_BIT 4 +#define USB_DADDR_ADD3_BIT 3 +#define USB_DADDR_ADD2_BIT 2 +#define USB_DADDR_ADD1_BIT 1 +#define USB_DADDR_ADD0_BIT 0 + +#define USB_DADDR_EF BIT(USB_DADDR_EF_BIT) +#define USB_DADDR_ADD6 BIT(USB_DADDR_ADD6_BIT) +#define USB_DADDR_ADD5 BIT(USB_DADDR_ADD5_BIT) +#define USB_DADDR_ADD4 BIT(USB_DADDR_ADD4_BIT) +#define USB_DADDR_ADD3 BIT(USB_DADDR_ADD3_BIT) +#define USB_DADDR_ADD2 BIT(USB_DADDR_ADD2_BIT) +#define USB_DADDR_ADD1 BIT(USB_DADDR_ADD1_BIT) +#define USB_DADDR_ADD0 BIT(USB_DADDR_ADD0_BIT) + +/* Buffer table address (USB_BTABLE) */ + +#define USB_BTABLE_BTABLE (0x1FFF << 3) + +/* + * Register convenience routines + */ + +#define __EP_CTR_NOP (USB_EP_CTR_RX | USB_EP_CTR_TX) +#define __EP_NONTOGGLE (USB_EP_CTR_RX | USB_EP_SETUP | \ + USB_EP_EP_TYPE | USB_EP_EP_KIND | \ + USB_EP_CTR_TX | USB_EP_EA) + +static inline void usb_clear_ctr_rx(uint8 ep) { + uint32 epr = USB_BASE->EP[ep]; + USB_BASE->EP[ep] = epr & ~USB_EP_CTR_RX & __EP_NONTOGGLE; +} + +static inline void usb_clear_ctr_tx(uint8 ep) { + uint32 epr = USB_BASE->EP[ep]; + USB_BASE->EP[ep] = epr & ~USB_EP_CTR_TX & __EP_NONTOGGLE; +} + +static inline void usb_set_ep_rx_stat(uint8 ep, uint32 status) { + uint32 epr = USB_BASE->EP[ep]; + epr &= ~(USB_EP_STAT_TX | USB_EP_DTOG_RX | USB_EP_DTOG_TX); + epr |= __EP_CTR_NOP; + epr ^= status; + USB_BASE->EP[ep] = epr; +} + +static inline void usb_set_ep_tx_stat(uint8 ep, uint32 status) { + uint32 epr = USB_BASE->EP[ep]; + epr &= ~(USB_EP_STAT_RX | USB_EP_DTOG_RX | USB_EP_DTOG_TX); + epr |= __EP_CTR_NOP; + epr ^= status; + USB_BASE->EP[ep] = epr; +} + +static inline void usb_set_ep_type(uint8 ep, uint32 type) { + uint32 epr = USB_BASE->EP[ep]; + epr &= ~USB_EP_EP_TYPE & __EP_NONTOGGLE; + epr |= type; + USB_BASE->EP[ep] = epr; +} + +static inline void usb_set_ep_kind(uint8 ep, uint32 kind) { + uint32 epr = USB_BASE->EP[ep]; + epr &= ~USB_EP_EP_KIND & __EP_NONTOGGLE; + epr |= kind; + USB_BASE->EP[ep] = epr; +} + +static inline void usb_clear_status_out(uint8 ep) { + usb_set_ep_kind(ep, 0); +} + +/* + * Packet memory area (PMA) base pointer + */ + +/** + * @brief USB packet memory area (PMA) base pointer. + * + * The USB PMA is SRAM shared between USB and CAN. The USB peripheral + * accesses this memory directly via the packet buffer interface. */ +#define USB_PMA_BASE ((__io void*)0x40006000) + +/* + * PMA conveniences + */ + +void usb_copy_to_pma(const uint8 *buf, uint16 len, uint16 pma_offset); +void usb_copy_from_pma(uint8 *buf, uint16 len, uint16 pma_offset); + +static inline void* usb_pma_ptr(uint32 offset) { + return (void*)(USB_PMA_BASE + 2 * offset); +} + +/* + * BTABLE + */ + +/* (Forward-declared) BTABLE entry. + * + * The BTABLE can be viewed as an array of usb_btable_ent values; + * these vary in structure according to the configuration of the + * endpoint. + */ +union usb_btable_ent; + +/* Bidirectional endpoint BTABLE entry */ +typedef struct usb_btable_bidi { + __io uint16 addr_tx; const uint16 PAD1; + __io uint16 count_tx; const uint16 PAD2; + __io uint16 addr_rx; const uint16 PAD3; + __io uint16 count_rx; const uint16 PAD4; +} usb_btable_bidi; + +/* Unidirectional receive-only endpoint BTABLE entry */ +typedef struct usb_btable_uni_rx { + __io uint16 empty1; const uint16 PAD1; + __io uint16 empty2; const uint16 PAD2; + __io uint16 addr_rx; const uint16 PAD3; + __io uint16 count_rx; const uint16 PAD4; +} usb_btable_uni_rx; + +/* Unidirectional transmit-only endpoint BTABLE entry */ +typedef struct usb_btable_uni_tx { + __io uint16 addr_tx; const uint16 PAD1; + __io uint16 count_tx; const uint16 PAD2; + __io uint16 empty1; const uint16 PAD3; + __io uint16 empty2; const uint16 PAD4; +} usb_btable_uni_tx; + +/* Double-buffered transmission endpoint BTABLE entry */ +typedef struct usb_btable_dbl_tx { + __io uint16 addr_tx0; const uint16 PAD1; + __io uint16 count_tx0; const uint16 PAD2; + __io uint16 addr_tx1; const uint16 PAD3; + __io uint16 count_tx1; const uint16 PAD4; +} usb_btable_dbl_tx; + +/* Double-buffered reception endpoint BTABLE entry */ +typedef struct usb_btable_dbl_rx { + __io uint16 addr_rx0; const uint16 PAD1; + __io uint16 count_rx0; const uint16 PAD2; + __io uint16 addr_rx1; const uint16 PAD3; + __io uint16 count_rx1; const uint16 PAD4; +} usb_btable_dbl_rx; + +/* TODO isochronous endpoint entries */ + +/* Definition for above forward-declared BTABLE entry. */ +typedef union usb_btable_ent { + usb_btable_bidi bidi; + usb_btable_uni_rx u_rx; + usb_btable_uni_tx u_tx; + usb_btable_dbl_tx d_tx; + usb_btable_dbl_rx d_rx; +} usb_btable_ent; + +/* + * BTABLE conveniences + */ + +/* TODO (?) Convert usages of the many (and lengthily-named) + * accessors/mutators below to just manipulating usb_btable_entry + * values. */ + +static inline uint32* usb_btable_ptr(uint32 offset) { + return (uint32*)usb_pma_ptr(USB_BASE->BTABLE + offset); +} + +static inline usb_btable_ent *usb_btable(void) { + return (usb_btable_ent*)usb_btable_ptr(0); +} + +/* TX address */ + +static inline uint32* usb_ep_tx_addr_ptr(uint8 ep) { + return usb_btable_ptr(ep * 8); +} + +static inline uint16 usb_get_ep_tx_addr(uint8 ep) { + return (uint16)*usb_ep_tx_addr_ptr(ep); +} + +static inline void usb_set_ep_tx_addr(uint8 ep, uint16 addr) { + uint32 *tx_addr = usb_ep_tx_addr_ptr(ep); + *tx_addr = addr & ~0x1; +} + +/* RX address */ + +static inline uint32* usb_ep_rx_addr_ptr(uint8 ep) { + return usb_btable_ptr(ep * 8 + 4); +} + +static inline uint16 usb_get_ep_rx_addr(uint8 ep) { + return (uint16)*usb_ep_rx_addr_ptr(ep); +} + +static inline void usb_set_ep_rx_addr(uint8 ep, uint16 addr) { + uint32 *rx_addr = usb_ep_rx_addr_ptr(ep); + *rx_addr = addr & ~0x1; +} + +/* TX count (doesn't cover double-buffered and isochronous in) */ + +static inline uint32* usb_ep_tx_count_ptr(uint8 ep) { + return usb_btable_ptr(ep * 8 + 2); +} + +static inline uint16 usb_get_ep_tx_count(uint8 ep) { + return (uint16)*usb_ep_tx_count_ptr(ep); +} + +static inline void usb_set_ep_tx_count(uint8 ep, uint16 count) { + uint32 *txc = usb_ep_tx_count_ptr(ep); + *txc = count; +} + +/* RX count */ + +static inline uint32* usb_ep_rx_count_ptr(uint8 ep) { + return usb_btable_ptr(ep * 8 + 6); +} + +static inline uint16 usb_get_ep_rx_count(uint8 ep) { + return (uint16)*usb_ep_rx_count_ptr(ep) & 0x3FF; +} + +void usb_set_ep_rx_count(uint8 ep, uint16 count); + +/* + * Misc. types + */ + +typedef enum usb_ep { + USB_EP0, + USB_EP1, + USB_EP2, + USB_EP3, + USB_EP4, + USB_EP5, + USB_EP6, + USB_EP7, +} usb_ep; + +typedef enum usb_ep_type { + USB_EP_T_CTL = USB_EP_EP_TYPE_CONTROL, + USB_EP_T_BULK = USB_EP_EP_TYPE_BULK, + USB_EP_T_INT = USB_EP_EP_TYPE_INTERRUPT, + USB_EP_T_ISO = USB_EP_EP_TYPE_ISO +} usb_ep_type; + +typedef enum usb_ep_stat { + USB_EP_ST_RX_DIS = USB_EP_STAT_RX_DISABLED, + USB_EP_ST_RX_STL = USB_EP_STAT_RX_STALL, + USB_EP_ST_RX_NAK = USB_EP_STAT_RX_NAK, + USB_EP_ST_RX_VAL = USB_EP_STAT_RX_VALID, + USB_EP_ST_TX_DIS = USB_EP_STAT_TX_DISABLED, + USB_EP_ST_TX_STL = USB_EP_STAT_TX_STALL, + USB_EP_ST_TX_NAK = USB_EP_STAT_TX_NAK, + USB_EP_ST_TX_VAL = USB_EP_STAT_TX_VALID +} usb_ep_stat; + +#endif diff --git a/libmaple/usb/usb.c b/libmaple/usb/usb.c deleted file mode 100644 index 0130bab..0000000 --- a/libmaple/usb/usb.c +++ /dev/null @@ -1,381 +0,0 @@ -/****************************************************************************** - * The MIT License - * - * Copyright (c) 2010 LeafLabs LLC. - * - * Permission is hereby granted, free of charge, to any person - * obtaining a copy of this software and associated documentation - * files (the "Software"), to deal in the Software without - * restriction, including without limitation the rights to use, copy, - * modify, merge, publish, distribute, sublicense, and/or sell copies - * of the Software, and to permit persons to whom the Software is - * furnished to do so, subject to the following conditions: - * - * The above copyright notice and this permission notice shall be included in - * all copies or substantial portions of the Software. - * - * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, - * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF - * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND - * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS - * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN - * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN - * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE - * SOFTWARE. - *****************************************************************************/ - -/** - * @file libmaple/usb/usb.c - * @brief USB support. - * - * This is a mess. What we need almost amounts to a ground-up rewrite. - */ - -#include - -#include -#include - -/* Private headers */ -#include "usb_reg_map.h" -#include "usb_lib_globals.h" - -/* usb_lib headers */ -#include "usb_type.h" -#include "usb_core.h" - -static void dispatch_ctr_lp(void); - -/* - * usb_lib/ globals - */ - -uint16 SaveTState; /* caches TX status for later use */ -uint16 SaveRState; /* caches RX status for later use */ - -/* - * Other state - */ - -typedef enum { - RESUME_EXTERNAL, - RESUME_INTERNAL, - RESUME_LATER, - RESUME_WAIT, - RESUME_START, - RESUME_ON, - RESUME_OFF, - RESUME_ESOF -} RESUME_STATE; - -struct { - volatile RESUME_STATE eState; - volatile uint8 bESOFcnt; -} ResumeS; - -static usblib_dev usblib = { - .irq_mask = USB_ISR_MSK, - .state = USB_UNCONNECTED, - .clk_id = RCC_USB, -}; -usblib_dev *USBLIB = &usblib; - -/* - * Routines - */ - -void usb_init_usblib(usblib_dev *dev, - void (**ep_int_in)(void), - void (**ep_int_out)(void)) { - rcc_clk_enable(dev->clk_id); - - dev->ep_int_in = ep_int_in; - dev->ep_int_out = ep_int_out; - - /* usb_lib/ declares both and then assumes that pFoo points to Foo - * (even though the names don't always match), which is stupid for - * all of the obvious reasons, but whatever. Here we are. */ - pInformation = &Device_Info; - pProperty = &Device_Property; - pUser_Standard_Requests = &User_Standard_Requests; - - pInformation->ControlState = 2; /* FIXME [0.0.12] use - CONTROL_STATE enumerator */ - pProperty->Init(); -} - -static void usb_suspend(void) { - uint16 cntr; - - /* TODO decide if read/modify/write is really what we want - * (e.g. usb_resume_init() reconfigures CNTR). */ - cntr = USB_BASE->CNTR; - cntr |= USB_CNTR_FSUSP; - USB_BASE->CNTR = cntr; - cntr |= USB_CNTR_LP_MODE; - USB_BASE->CNTR = cntr; - - USBLIB->state = USB_SUSPENDED; -} - -static void usb_resume_init(void) { - uint16 cntr; - - cntr = USB_BASE->CNTR; - cntr &= ~USB_CNTR_LP_MODE; - USB_BASE->CNTR = cntr; - - /* Enable interrupt lines */ - USB_BASE->CNTR = USB_ISR_MSK; -} - -static void usb_resume(RESUME_STATE eResumeSetVal) { - uint16 cntr; - - if (eResumeSetVal != RESUME_ESOF) - ResumeS.eState = eResumeSetVal; - - switch (ResumeS.eState) - { - case RESUME_EXTERNAL: - usb_resume_init(); - ResumeS.eState = RESUME_OFF; - break; - case RESUME_INTERNAL: - usb_resume_init(); - ResumeS.eState = RESUME_START; - break; - case RESUME_LATER: - ResumeS.bESOFcnt = 2; - ResumeS.eState = RESUME_WAIT; - break; - case RESUME_WAIT: - ResumeS.bESOFcnt--; - if (ResumeS.bESOFcnt == 0) - ResumeS.eState = RESUME_START; - break; - case RESUME_START: - cntr = USB_BASE->CNTR; - cntr |= USB_CNTR_RESUME; - USB_BASE->CNTR = cntr; - ResumeS.eState = RESUME_ON; - ResumeS.bESOFcnt = 10; - break; - case RESUME_ON: - ResumeS.bESOFcnt--; - if (ResumeS.bESOFcnt == 0) { - cntr = USB_BASE->CNTR; - cntr &= ~USB_CNTR_RESUME; - USB_BASE->CNTR = cntr; - ResumeS.eState = RESUME_OFF; - } - break; - case RESUME_OFF: - case RESUME_ESOF: - default: - ResumeS.eState = RESUME_OFF; - break; - } -} - -#define SUSPEND_ENABLED 1 -void __irq_usb_lp_can_rx0(void) { - uint16 istr = USB_BASE->ISTR; - - /* Use USB_ISR_MSK to only include code for bits we care about. */ - -#if (USB_ISR_MSK & USB_ISTR_RESET) - if (istr & USB_ISTR_RESET & USBLIB->irq_mask) { - USB_BASE->ISTR = ~USB_ISTR_RESET; - pProperty->Reset(); - } -#endif - -#if (USB_ISR_MSK & USB_ISTR_PMAOVR) - if (istr & ISTR_PMAOVR & USBLIB->irq_mask) { - USB_BASE->ISTR = ~USB_ISTR_PMAOVR; - } -#endif - -#if (USB_ISR_MSK & USB_ISTR_ERR) - if (istr & USB_ISTR_ERR & USBLIB->irq_mask) { - USB_BASE->ISTR = ~USB_ISTR_ERR; - } -#endif - -#if (USB_ISR_MSK & USB_ISTR_WKUP) - if (istr & USB_ISTR_WKUP & USBLIB->irq_mask) { - USB_BASE->ISTR = ~USB_ISTR_WKUP; - usb_resume(RESUME_EXTERNAL); - } -#endif - -#if (USB_ISR_MSK & USB_ISTR_SUSP) - if (istr & USB_ISTR_SUSP & USBLIB->irq_mask) { - /* check if SUSPEND is possible */ - if (SUSPEND_ENABLED) { - usb_suspend(); - } else { - /* if not possible then resume after xx ms */ - usb_resume(RESUME_LATER); - } - /* clear of the ISTR bit must be done after setting of CNTR_FSUSP */ - USB_BASE->ISTR = ~USB_ISTR_SUSP; -} -#endif - -#if (USB_ISR_MSK & USB_ISTR_SOF) - if (istr & USB_ISTR_SOF & USBLIB->irq_mask) { - USB_BASE->ISTR = ~USB_ISTR_SOF; - } -#endif - -#if (USB_ISR_MSK & USB_ISTR_ESOF) - if (istr & USB_ISTR_ESOF & USBLIB->irq_mask) { - USB_BASE->ISTR = ~USB_ISTR_ESOF; - /* resume handling timing is made with ESOFs */ - usb_resume(RESUME_ESOF); /* request without change of the machine state */ - } -#endif - - /* - * Service the correct transfer interrupt. - */ - -#if (USB_ISR_MSK & USB_ISTR_CTR) - if (istr & USB_ISTR_CTR & USBLIB->irq_mask) { - dispatch_ctr_lp(); - } -#endif -} - -/* - * Auxiliary routines - */ - -static inline uint8 dispatch_endpt_zero(uint16 istr_dir); -static inline void dispatch_endpt(uint8 ep); -static inline void set_rx_tx_status0(uint16 rx, uint16 tx); - -static void handle_setup0(void); -static void handle_in0(void); -static void handle_out0(void); - -static void dispatch_ctr_lp() { - uint16 istr; - while (((istr = USB_BASE->ISTR) & USB_ISTR_CTR) != 0) { - /* TODO WTF, figure this out: RM0008 says CTR is read-only, - * but ST's firmware claims it's clear-only, and emphasizes - * the importance of clearing it in more than one place. */ - USB_BASE->ISTR = ~USB_ISTR_CTR; - uint8 ep_id = istr & USB_ISTR_EP_ID; - if (ep_id == 0) { - /* TODO figure out why it's OK to break out of the loop - * once we're done serving endpoint zero, but not okay if - * there are multiple nonzero endpoint transfers to - * handle. */ - if (dispatch_endpt_zero(istr & USB_ISTR_DIR)) - return; - } else { - dispatch_endpt(ep_id); - } - } -} - -/* FIXME Dataflow on endpoint 0 RX/TX status is based off of ST's - * code, and is ugly/confusing in its use of SaveRState/SaveTState. - * Fixing this requires filling in handle_in0(), handle_setup0(), - * handle_out0(). */ -static inline uint8 dispatch_endpt_zero(uint16 istr_dir) { - uint32 epr = (uint16)USB_BASE->EP[0]; - - if (!(epr & (USB_EP_CTR_TX | USB_EP_SETUP | USB_EP_CTR_RX))) { - return 0; - } - - /* Cache RX/TX statuses in SaveRState/SaveTState, respectively. - * The various handle_foo0() may clobber these values - * before we reset them at the end of this routine. */ - SaveRState = epr & USB_EP_STAT_RX; - SaveTState = epr & USB_EP_STAT_TX; - - /* Set actual RX/TX statuses to NAK while we're thinking */ - set_rx_tx_status0(USB_EP_STAT_RX_NAK, USB_EP_STAT_TX_NAK); - - if (istr_dir == 0) { - /* ST RM0008: "If DIR bit=0, CTR_TX bit is set in the USB_EPnR - * register related to the interrupting endpoint. The - * interrupting transaction is of IN type (data transmitted by - * the USB peripheral to the host PC)." */ - ASSERT_FAULT(epr & USB_EP_CTR_TX); - usb_clear_ctr_tx(USB_EP0); - handle_in0(); - } else { - /* RM0008: "If DIR bit=1, CTR_RX bit or both CTR_TX/CTR_RX - * are set in the USB_EPnR register related to the - * interrupting endpoint. The interrupting transaction is of - * OUT type (data received by the USB peripheral from the host - * PC) or two pending transactions are waiting to be - * processed." - * - * [mbolivar] Note how the following control flow (which - * replicates ST's) doesn't seem to actually handle both - * interrupts that are ostensibly pending when both CTR_RX and - * CTR_TX are set. - * - * TODO sort this mess out. - */ - if (epr & USB_EP_CTR_TX) { - usb_clear_ctr_tx(USB_EP0); - handle_in0(); - } else { /* SETUP or CTR_RX */ - /* SETUP is held constant while CTR_RX is set, so clear it - * either way */ - usb_clear_ctr_rx(USB_EP0); - if (epr & USB_EP_SETUP) { - handle_setup0(); - } else { /* CTR_RX */ - handle_out0(); - } - } - } - - set_rx_tx_status0(SaveRState, SaveTState); - return 1; -} - -static inline void dispatch_endpt(uint8 ep) { - uint32 epr = USB_BASE->EP[ep]; - /* If ISTR_CTR is set and the ISTR gave us this EP_ID to handle, - * then presumably at least one of CTR_RX and CTR_TX is set, but - * again, ST's control flow allows for the possibility of neither. - * - * TODO try to find out if neither being set is possible. */ - if (epr & USB_EP_CTR_RX) { - usb_clear_ctr_rx(ep); - (USBLIB->ep_int_out[ep - 1])(); - } - if (epr & USB_EP_CTR_TX) { - usb_clear_ctr_tx(ep); - (USBLIB->ep_int_in[ep - 1])(); - } -} - -static inline void set_rx_tx_status0(uint16 rx, uint16 tx) { - usb_set_ep_rx_stat(USB_EP0, rx); - usb_set_ep_tx_stat(USB_EP0, tx); -} - -/* TODO Rip out usb_lib/ dependency from the following functions: */ - -static void handle_setup0(void) { - Setup0_Process(); -} - -static void handle_in0(void) { - In0_Process(); -} - -static void handle_out0(void) { - Out0_Process(); -} diff --git a/libmaple/usb/usb_cdcacm.c b/libmaple/usb/usb_cdcacm.c deleted file mode 100644 index 6ef4806..0000000 --- a/libmaple/usb/usb_cdcacm.c +++ /dev/null @@ -1,762 +0,0 @@ -/****************************************************************************** - * The MIT License - * - * Copyright (c) 2011 LeafLabs LLC. - * - * Permission is hereby granted, free of charge, to any person - * obtaining a copy of this software and associated documentation - * files (the "Software"), to deal in the Software without - * restriction, including without limitation the rights to use, copy, - * modify, merge, publish, distribute, sublicense, and/or sell copies - * of the Software, and to permit persons to whom the Software is - * furnished to do so, subject to the following conditions: - * - * The above copyright notice and this permission notice shall be included in - * all copies or substantial portions of the Software. - * - * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, - * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF - * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND - * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS - * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN - * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN - * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE - * SOFTWARE. - *****************************************************************************/ - -/** - * @file libmaple/usb/usb_cdcacm.c - * @brief USB CDC ACM (a.k.a. virtual serial terminal, VCOM). - * - * FIXME: this works on the STM32F1 USB peripherals, and probably no - * place else. Nonportable bits really need to be factored out, and - * the result made cleaner. - */ - -#include - -#include -#include -#include - -/* Private headers */ -#include "usb_descriptors.h" -#include "usb_lib_globals.h" -#include "usb_reg_map.h" - -/* usb_lib headers */ -#include "usb_type.h" -#include "usb_core.h" -#include "usb_def.h" - -/****************************************************************************** - ****************************************************************************** - *** - *** HACK ALERT! FIXME FIXME FIXME FIXME! - *** - *** A bunch of LeafLabs-specific configuration lives in here for - *** now. This mess REALLY needs to get teased apart, with - *** appropriate pieces moved into Wirish. - *** - ****************************************************************************** - *****************************************************************************/ - -#if !(defined(BOARD_maple) || defined(BOARD_maple_RET6) || \ - defined(BOARD_maple_mini) || defined(BOARD_maple_native)) -#warning USB CDC ACM relies on LeafLabs board-specific configuration.\ - You may have problems on non-LeafLabs boards. -#endif - -static void vcomDataTxCb(void); -static void vcomDataRxCb(void); -static uint8* vcomGetSetLineCoding(uint16); - -static void usbInit(void); -static void usbReset(void); -static RESULT usbDataSetup(uint8 request); -static RESULT usbNoDataSetup(uint8 request); -static RESULT usbGetInterfaceSetting(uint8 interface, uint8 alt_setting); -static uint8* usbGetDeviceDescriptor(uint16 length); -static uint8* usbGetConfigDescriptor(uint16 length); -static uint8* usbGetStringDescriptor(uint16 length); -static void usbSetConfiguration(void); -static void usbSetDeviceAddress(void); - -static void wait_reset(void); - -/* - * VCOM config - */ - -#define VCOM_CTRL_EPNUM 0x00 -#define VCOM_CTRL_RX_ADDR 0x40 -#define VCOM_CTRL_TX_ADDR 0x80 -#define VCOM_CTRL_EPSIZE 0x40 - -#define VCOM_TX_ENDP 1 -#define VCOM_TX_EPNUM 0x01 -#define VCOM_TX_ADDR 0xC0 -#define VCOM_TX_EPSIZE 0x40 - -#define VCOM_NOTIFICATION_ENDP 2 -#define VCOM_NOTIFICATION_EPNUM 0x02 -#define VCOM_NOTIFICATION_ADDR 0x100 -#define VCOM_NOTIFICATION_EPSIZE 0x40 - -#define VCOM_RX_ENDP 3 -#define VCOM_RX_EPNUM 0x03 -#define VCOM_RX_ADDR 0x110 -#define VCOM_RX_EPSIZE 0x40 -#define VCOM_RX_BUFLEN (VCOM_RX_EPSIZE*3) - -/* - * CDC ACM Requests - */ - -#define SET_LINE_CODING 0x20 -#define GET_LINE_CODING 0x21 -#define SET_COMM_FEATURE 0x02 -#define SET_CONTROL_LINE_STATE 0x22 -#define CONTROL_LINE_DTR (0x01) -#define CONTROL_LINE_RTS (0x02) - -/* - * Descriptors - */ - -#define USB_DEVICE_CLASS_CDC 0x02 -#define USB_DEVICE_SUBCLASS_CDC 0x00 -#define LEAFLABS_ID_VENDOR 0x1EAF -#define MAPLE_ID_PRODUCT 0x0004 -const USB_Descriptor_Device usbVcomDescriptor_Device = { - .bLength = sizeof(USB_Descriptor_Device), - .bDescriptorType = USB_DESCRIPTOR_TYPE_DEVICE, - .bcdUSB = 0x0200, - .bDeviceClass = USB_DEVICE_CLASS_CDC, - .bDeviceSubClass = USB_DEVICE_SUBCLASS_CDC, - .bDeviceProtocol = 0x00, - .bMaxPacketSize0 = 0x40, - .idVendor = LEAFLABS_ID_VENDOR, - .idProduct = MAPLE_ID_PRODUCT, - .bcdDevice = 0x0200, - .iManufacturer = 0x01, - .iProduct = 0x02, - .iSerialNumber = 0x00, - .bNumConfigurations = 0x01, -}; - -#define MAX_POWER (100 >> 1) -const USB_Descriptor_Config usbVcomDescriptor_Config = { - .Config_Header = { - .bLength = sizeof(USB_Descriptor_Config_Header), - .bDescriptorType = USB_DESCRIPTOR_TYPE_CONFIGURATION, - .wTotalLength = sizeof(USB_Descriptor_Config), - .bNumInterfaces = 0x02, - .bConfigurationValue = 0x01, - .iConfiguration = 0x00, - .bmAttributes = (USB_CONFIG_ATTR_BUSPOWERED | - USB_CONFIG_ATTR_SELF_POWERED), - .bMaxPower = MAX_POWER, - }, - - .CCI_Interface = { - .bLength = sizeof(USB_Descriptor_Interface), - .bDescriptorType = USB_DESCRIPTOR_TYPE_INTERFACE, - .bInterfaceNumber = 0x00, - .bAlternateSetting = 0x00, - .bNumEndpoints = 0x01, - .bInterfaceClass = USB_INTERFACE_CLASS_CDC, - .bInterfaceSubClass = USB_INTERFACE_SUBCLASS_CDC_ACM, - .bInterfaceProtocol = 0x01, /* Common AT Commands */ - .iInterface = 0x00, - }, - - .CDC_Functional_IntHeader = { - .bLength = CDC_FUNCTIONAL_DESCRIPTOR_SIZE(2), - .bDescriptorType = 0x24, - .SubType = 0x00, - .Data = {0x01, 0x10}, - }, - - .CDC_Functional_CallManagement = { - .bLength = CDC_FUNCTIONAL_DESCRIPTOR_SIZE(2), - .bDescriptorType = 0x24, - .SubType = 0x01, - .Data = {0x03, 0x01}, - }, - - .CDC_Functional_ACM = { - .bLength = CDC_FUNCTIONAL_DESCRIPTOR_SIZE(1), - .bDescriptorType = 0x24, - .SubType = 0x02, - .Data = {0x06}, - }, - - .CDC_Functional_Union = { - .bLength = CDC_FUNCTIONAL_DESCRIPTOR_SIZE(2), - .bDescriptorType = 0x24, - .SubType = 0x06, - .Data = {0x00, 0x01}, - }, - - .ManagementEndpoint = { - .bLength = sizeof(USB_Descriptor_Endpoint), - .bDescriptorType = USB_DESCRIPTOR_TYPE_ENDPOINT, - .bEndpointAddress = (USB_DESCRIPTOR_ENDPOINT_IN | - VCOM_NOTIFICATION_EPNUM), - .bmAttributes = EP_TYPE_INTERRUPT, - .wMaxPacketSize = VCOM_NOTIFICATION_EPSIZE, - .bInterval = 0xFF, - }, - - .DCI_Interface = { - .bLength = sizeof(USB_Descriptor_Interface), - .bDescriptorType = USB_DESCRIPTOR_TYPE_INTERFACE, - .bInterfaceNumber = 0x01, - .bAlternateSetting = 0x00, - .bNumEndpoints = 0x02, - .bInterfaceClass = USB_INTERFACE_CLASS_DIC, - .bInterfaceSubClass = 0x00, /* None */ - .bInterfaceProtocol = 0x00, /* None */ - .iInterface = 0x00, - }, - - .DataOutEndpoint = { - .bLength = sizeof(USB_Descriptor_Endpoint), - .bDescriptorType = USB_DESCRIPTOR_TYPE_ENDPOINT, - .bEndpointAddress = (USB_DESCRIPTOR_ENDPOINT_OUT | VCOM_RX_EPNUM), - .bmAttributes = EP_TYPE_BULK, - .wMaxPacketSize = VCOM_RX_EPSIZE, - .bInterval = 0x00, - }, - - .DataInEndpoint = { - .bLength = sizeof(USB_Descriptor_Endpoint), - .bDescriptorType = USB_DESCRIPTOR_TYPE_ENDPOINT, - .bEndpointAddress = (USB_DESCRIPTOR_ENDPOINT_IN | VCOM_TX_EPNUM), - .bmAttributes = EP_TYPE_BULK, - .wMaxPacketSize = VCOM_TX_EPSIZE, - .bInterval = 0x00, - }, -}; - -/* - String Identifiers: - - we may choose to specify any or none of the following string - identifiers: - - iManufacturer: LeafLabs - iProduct: Maple - iSerialNumber: NONE - iConfiguration: NONE - iInterface(CCI): NONE - iInterface(DCI): NONE - - additionally we must provide the unicode language identifier, - which is 0x0409 for US English -*/ - -const uint8 usbVcomDescriptor_LangID[USB_DESCRIPTOR_STRING_LEN(1)] = { - USB_DESCRIPTOR_STRING_LEN(1), - USB_DESCRIPTOR_TYPE_STRING, - 0x09, - 0x04, -}; - -const uint8 usbVcomDescriptor_iManufacturer[USB_DESCRIPTOR_STRING_LEN(8)] = { - USB_DESCRIPTOR_STRING_LEN(8), - USB_DESCRIPTOR_TYPE_STRING, - 'L', 0, 'e', 0, 'a', 0, 'f', 0, - 'L', 0, 'a', 0, 'b', 0, 's', 0, -}; - -const uint8 usbVcomDescriptor_iProduct[USB_DESCRIPTOR_STRING_LEN(8)] = { - USB_DESCRIPTOR_STRING_LEN(8), - USB_DESCRIPTOR_TYPE_STRING, - 'M', 0, 'a', 0, 'p', 0, 'l', 0, - 'e', 0, ' ', 0, ' ', 0, ' ', 0 -}; - -ONE_DESCRIPTOR Device_Descriptor = { - (uint8*)&usbVcomDescriptor_Device, - sizeof(USB_Descriptor_Device) -}; - -ONE_DESCRIPTOR Config_Descriptor = { - (uint8*)&usbVcomDescriptor_Config, - sizeof(USB_Descriptor_Config) -}; - -ONE_DESCRIPTOR String_Descriptor[3] = { - {(uint8*)&usbVcomDescriptor_LangID, USB_DESCRIPTOR_STRING_LEN(1)}, - {(uint8*)&usbVcomDescriptor_iManufacturer,USB_DESCRIPTOR_STRING_LEN(8)}, - {(uint8*)&usbVcomDescriptor_iProduct, USB_DESCRIPTOR_STRING_LEN(8)} -}; - -/* - * Etc. - */ - -typedef enum { - DTR_UNSET, - DTR_HIGH, - DTR_NEGEDGE, - DTR_LOW -} RESET_STATE; - -typedef struct { - uint32 bitrate; - uint8 format; - uint8 paritytype; - uint8 datatype; -} USB_Line_Coding; - -uint8 last_request = 0; -USB_Line_Coding line_coding = { - .bitrate = 115200, - .format = 0x00, /* stop bits-1 */ - .paritytype = 0x00, - .datatype = 0x08 -}; -uint8 vcomBufferRx[VCOM_RX_BUFLEN]; -volatile uint32 countTx = 0; -volatile uint32 recvBufIn = 0; -volatile uint32 recvBufOut = 0; -volatile uint32 maxNewBytes = VCOM_RX_BUFLEN; -volatile uint32 newBytes = 0; -RESET_STATE reset_state = DTR_UNSET; -uint8 line_dtr_rts = 0; - -/* - * Endpoint callbacks - */ - -static void (*ep_int_in[7])(void) = - {vcomDataTxCb, - NOP_Process, - NOP_Process, - NOP_Process, - NOP_Process, - NOP_Process, - NOP_Process}; - -static void (*ep_int_out[7])(void) = - {NOP_Process, - NOP_Process, - vcomDataRxCb, - NOP_Process, - NOP_Process, - NOP_Process, - NOP_Process}; - -/* - * Globals required by usb_lib/ - */ - -#define NUM_ENDPTS 0x04 -DEVICE Device_Table = { - .Total_Endpoint = NUM_ENDPTS, - .Total_Configuration = 1 -}; - -#define MAX_PACKET_SIZE 0x40 /* 64B, maximum for USB FS Devices */ -DEVICE_PROP Device_Property = { - .Init = usbInit, - .Reset = usbReset, - .Process_Status_IN = NOP_Process, - .Process_Status_OUT = NOP_Process, - .Class_Data_Setup = usbDataSetup, - .Class_NoData_Setup = usbNoDataSetup, - .Class_Get_Interface_Setting = usbGetInterfaceSetting, - .GetDeviceDescriptor = usbGetDeviceDescriptor, - .GetConfigDescriptor = usbGetConfigDescriptor, - .GetStringDescriptor = usbGetStringDescriptor, - .RxEP_buffer = NULL, - .MaxPacketSize = MAX_PACKET_SIZE -}; - -USER_STANDARD_REQUESTS User_Standard_Requests = { - .User_GetConfiguration = NOP_Process, - .User_SetConfiguration = usbSetConfiguration, - .User_GetInterface = NOP_Process, - .User_SetInterface = NOP_Process, - .User_GetStatus = NOP_Process, - .User_ClearFeature = NOP_Process, - .User_SetEndPointFeature = NOP_Process, - .User_SetDeviceFeature = NOP_Process, - .User_SetDeviceAddress = usbSetDeviceAddress -}; - -/* - * CDC ACM interface - */ - -void usb_cdcacm_enable(gpio_dev *disc_dev, uint8 disc_bit) { - /* Present ourselves to the host */ - gpio_set_mode(disc_dev, disc_bit, GPIO_OUTPUT_PP); - gpio_write_bit(disc_dev, disc_bit, 0); // presents us to the host - - /* initialize USB peripheral */ - usb_init_usblib(USBLIB, ep_int_in, ep_int_out); -} - -void usb_cdcacm_disable(gpio_dev *disc_dev, uint8 disc_bit) { - // These are just guesses about how to do this, but it seems to work. - // TODO: verify this with USB spec - nvic_irq_disable(NVIC_USB_LP_CAN_RX0); - gpio_write_bit(disc_dev, disc_bit, 1); -} - -void usb_cdcacm_putc(char ch) { - while (!usb_cdcacm_tx((uint8*)&ch, 1)) - ; -} - -/* This function is non-blocking. - * - * It copies data from a usercode buffer into the USB peripheral TX - * buffer and return the number placed in that buffer. - */ -uint32 usb_cdcacm_tx(const uint8* buf, uint32 len) { - /* Last transmission hasn't finished, abort */ - if (countTx) { - return 0; - } - - // We can only put VCOM_TX_EPSIZE bytes in the buffer - /* FIXME then why are we only copying half as many? */ - if (len > VCOM_TX_EPSIZE / 2) { - len = VCOM_TX_EPSIZE / 2; - } - - // Try to load some bytes if we can - if (len) { - usb_copy_to_pma(buf, len, VCOM_TX_ADDR); - usb_set_ep_tx_count(VCOM_TX_ENDP, len); - countTx += len; - usb_set_ep_tx_stat(VCOM_TX_ENDP, USB_EP_STAT_TX_VALID); - } - - return len; -} - -/* returns the number of available bytes are in the recv FIFO */ -uint32 usb_cdcacm_data_available(void) { - return newBytes; -} - -uint16 usb_cdcacm_get_pending() { - return countTx; -} - -/* Nonblocking byte receive. - * - * Copies up to len bytes from our private data buffer (*NOT* the PMA) - * into buf and deq's the FIFO. */ -uint32 usb_cdcacm_rx(uint8* buf, uint32 len) { - static int offset = 0; - int i; - - if (len > newBytes) { - len = newBytes; - } - - for (i = 0; i < len; i++) { - buf[i] = vcomBufferRx[i + offset]; - } - - newBytes -= len; - offset += len; - - /* Re-enable the RX endpoint, which we had set to receive 0 bytes */ - if (newBytes == 0) { - usb_set_ep_rx_count(VCOM_RX_ENDP, VCOM_RX_EPSIZE); - usb_set_ep_rx_stat(VCOM_RX_ENDP, USB_EP_STAT_RX_VALID); - offset = 0; - } - - return len; -} - -uint8 usb_cdcacm_get_dtr() { - return ((line_dtr_rts & CONTROL_LINE_DTR) != 0); -} - -uint8 usb_cdcacm_get_rts() { - return ((line_dtr_rts & CONTROL_LINE_RTS) != 0); -} - -/* - * Callbacks - */ - -static void vcomDataTxCb(void) { - /* assumes tx transactions are atomic 64 bytes (nearly certain they are) */ - countTx = 0; -} - -#define EXC_RETURN 0xFFFFFFF9 -#define DEFAULT_CPSR 0x61000000 -static void vcomDataRxCb(void) { - /* FIXME this is mad buggy */ - - /* setEPRxCount on the previous cycle should garuntee - we havnt received more bytes than we can fit */ - newBytes = usb_get_ep_rx_count(VCOM_RX_ENDP); - usb_set_ep_rx_stat(VCOM_RX_ENDP, USB_EP_STAT_RX_NAK); - - /* magic number, {0x31, 0x45, 0x41, 0x46} is "1EAF" */ - uint8 chkBuf[4]; - uint8 cmpBuf[4] = {0x31, 0x45, 0x41, 0x46}; - if (reset_state == DTR_NEGEDGE) { - reset_state = DTR_LOW; - - if (newBytes >= 4) { - unsigned int target = (unsigned int)wait_reset | 0x1; - - usb_copy_from_pma(chkBuf, 4, VCOM_RX_ADDR); - - int i; - USB_Bool cmpMatch = TRUE; - for (i = 0; i < 4; i++) { - if (chkBuf[i] != cmpBuf[i]) { - cmpMatch = FALSE; - } - } - - if (cmpMatch) { - asm volatile("mov r0, %[stack_top] \n\t" // Reset stack - "mov sp, r0 \n\t" - "mov r0, #1 \n\t" - "mov r1, %[target_addr] \n\t" - "mov r2, %[cpsr] \n\t" - "push {r2} \n\t" // Fake xPSR - "push {r1} \n\t" // PC target addr - "push {r0} \n\t" // Fake LR - "push {r0} \n\t" // Fake R12 - "push {r0} \n\t" // Fake R3 - "push {r0} \n\t" // Fake R2 - "push {r0} \n\t" // Fake R1 - "push {r0} \n\t" // Fake R0 - "mov lr, %[exc_return] \n\t" - "bx lr" - : - : [stack_top] "r" (STACK_TOP), - [target_addr] "r" (target), - [exc_return] "r" (EXC_RETURN), - [cpsr] "r" (DEFAULT_CPSR) - : "r0", "r1", "r2"); - /* should never get here */ - } - } - } - - usb_copy_from_pma(vcomBufferRx, newBytes, VCOM_RX_ADDR); -} - -static uint8* vcomGetSetLineCoding(uint16 length) { - if (length == 0) { - pInformation->Ctrl_Info.Usb_wLength = sizeof(USB_Line_Coding); - } - return (uint8*)&line_coding; -} - -static void usbInit(void) { - pInformation->Current_Configuration = 0; - - USB_BASE->CNTR = USB_CNTR_FRES; - - USBLIB->irq_mask = 0; - USB_BASE->CNTR = USBLIB->irq_mask; - USB_BASE->ISTR = 0; - USBLIB->irq_mask = USB_CNTR_RESETM | USB_CNTR_SUSPM | USB_CNTR_WKUPM; - USB_BASE->CNTR = USBLIB->irq_mask; - - USB_BASE->ISTR = 0; - USBLIB->irq_mask = USB_ISR_MSK; - USB_BASE->CNTR = USBLIB->irq_mask; - - nvic_irq_enable(NVIC_USB_LP_CAN_RX0); - USBLIB->state = USB_UNCONNECTED; -} - -/* choose addresses to give endpoints the max 64 byte buffers */ -#define BTABLE_ADDRESS 0x00 -static void usbReset(void) { - pInformation->Current_Configuration = 0; - - /* current feature is current bmAttributes */ - pInformation->Current_Feature = (USB_CONFIG_ATTR_BUSPOWERED | - USB_CONFIG_ATTR_SELF_POWERED); - - USB_BASE->BTABLE = BTABLE_ADDRESS; - - /* setup control endpoint 0 */ - usb_set_ep_type(USB_EP0, USB_EP_EP_TYPE_CONTROL); - usb_set_ep_tx_stat(USB_EP0, USB_EP_STAT_TX_STALL); - usb_set_ep_rx_addr(USB_EP0, VCOM_CTRL_RX_ADDR); - usb_set_ep_tx_addr(USB_EP0, VCOM_CTRL_TX_ADDR); - usb_clear_status_out(USB_EP0); - - usb_set_ep_rx_count(USB_EP0, pProperty->MaxPacketSize); - usb_set_ep_rx_stat(USB_EP0, USB_EP_STAT_RX_VALID); - - /* setup management endpoint 1 */ - usb_set_ep_type(VCOM_NOTIFICATION_ENDP, USB_EP_EP_TYPE_INTERRUPT); - usb_set_ep_tx_addr(VCOM_NOTIFICATION_ENDP, VCOM_NOTIFICATION_ADDR); - usb_set_ep_tx_stat(VCOM_NOTIFICATION_ENDP, USB_EP_STAT_TX_NAK); - usb_set_ep_rx_stat(VCOM_NOTIFICATION_ENDP, USB_EP_STAT_RX_DISABLED); - - /* TODO figure out differences in style between RX/TX EP setup */ - - /* set up data endpoint OUT (RX) */ - usb_set_ep_type(VCOM_RX_ENDP, USB_EP_EP_TYPE_BULK); - usb_set_ep_rx_addr(VCOM_RX_ENDP, 0x110); - usb_set_ep_rx_count(VCOM_RX_ENDP, 64); - usb_set_ep_rx_stat(VCOM_RX_ENDP, USB_EP_STAT_RX_VALID); - - /* set up data endpoint IN (TX) */ - usb_set_ep_type(VCOM_TX_ENDP, USB_EP_EP_TYPE_BULK); - usb_set_ep_tx_addr(VCOM_TX_ENDP, VCOM_TX_ADDR); - usb_set_ep_tx_stat(VCOM_TX_ENDP, USB_EP_STAT_TX_NAK); - usb_set_ep_rx_stat(VCOM_TX_ENDP, USB_EP_STAT_RX_DISABLED); - - USBLIB->state = USB_ATTACHED; - SetDeviceAddress(0); - - /* reset the rx fifo */ - recvBufIn = 0; - recvBufOut = 0; - maxNewBytes = VCOM_RX_EPSIZE; - countTx = 0; -} - -static RESULT usbDataSetup(uint8 request) { - uint8 *(*CopyRoutine)(uint16); - CopyRoutine = NULL; - - if (Type_Recipient == (CLASS_REQUEST | INTERFACE_RECIPIENT)) { - switch (request) { - case (GET_LINE_CODING): - CopyRoutine = vcomGetSetLineCoding; - last_request = GET_LINE_CODING; - break; - case (SET_LINE_CODING): - CopyRoutine = vcomGetSetLineCoding; - last_request = SET_LINE_CODING; - break; - default: - break; - } - } - - if (CopyRoutine == NULL) { - return USB_UNSUPPORT; - } - - pInformation->Ctrl_Info.CopyData = CopyRoutine; - pInformation->Ctrl_Info.Usb_wOffset = 0; - (*CopyRoutine)(0); - return USB_SUCCESS; -} - -static RESULT usbNoDataSetup(uint8 request) { - uint8 new_signal; - - /* we support set com feature but dont handle it */ - if (Type_Recipient == (CLASS_REQUEST | INTERFACE_RECIPIENT)) { - - switch (request) { - case (SET_COMM_FEATURE): - return USB_SUCCESS; - case (SET_CONTROL_LINE_STATE): - /* to reset the board, pull both dtr and rts low - then pulse dtr by itself */ - new_signal = (pInformation->USBwValues.bw.bb0 & - (CONTROL_LINE_DTR | CONTROL_LINE_RTS)); - line_dtr_rts = new_signal & 0x03; - - switch (reset_state) { - /* no default, covered enum */ - case DTR_UNSET: - if ((new_signal & CONTROL_LINE_DTR) == 0 ) { - reset_state = DTR_LOW; - } else { - reset_state = DTR_HIGH; - } - break; - - case DTR_HIGH: - if ((new_signal & CONTROL_LINE_DTR) == 0 ) { - reset_state = DTR_NEGEDGE; - } else { - reset_state = DTR_HIGH; - } - break; - - case DTR_NEGEDGE: - if ((new_signal & CONTROL_LINE_DTR) == 0 ) { - reset_state = DTR_LOW; - } else { - reset_state = DTR_HIGH; - } - break; - - case DTR_LOW: - if ((new_signal & CONTROL_LINE_DTR) == 0 ) { - reset_state = DTR_LOW; - } else { - reset_state = DTR_HIGH; - } - break; - } - - return USB_SUCCESS; - } - } - return USB_UNSUPPORT; -} - -static RESULT usbGetInterfaceSetting(uint8 interface, uint8 alt_setting) { - if (alt_setting > 0) { - return USB_UNSUPPORT; - } else if (interface > 1) { - return USB_UNSUPPORT; - } - - return USB_SUCCESS; -} - -static uint8* usbGetDeviceDescriptor(uint16 length) { - return Standard_GetDescriptorData(length, &Device_Descriptor); -} - -static uint8* usbGetConfigDescriptor(uint16 length) { - return Standard_GetDescriptorData(length, &Config_Descriptor); -} - -static uint8* usbGetStringDescriptor(uint16 length) { - uint8 wValue0 = pInformation->USBwValue0; - - if (wValue0 > 2) { - return NULL; - } - return Standard_GetDescriptorData(length, &String_Descriptor[wValue0]); -} - -static void usbSetConfiguration(void) { - if (pInformation->Current_Configuration != 0) { - USBLIB->state = USB_CONFIGURED; - } -} - -static void usbSetDeviceAddress(void) { - USBLIB->state = USB_ADDRESSED; -} - -#define RESET_DELAY 100000 -static void wait_reset(void) { - delay_us(RESET_DELAY); - nvic_sys_reset(); -} diff --git a/libmaple/usb/usb_descriptors.h b/libmaple/usb/usb_descriptors.h deleted file mode 100644 index 9bcb2b6..0000000 --- a/libmaple/usb/usb_descriptors.h +++ /dev/null @@ -1,148 +0,0 @@ -/****************************************************************************** - * The MIT License - * - * Copyright (c) 2010 LeafLabs LLC. - * - * Permission is hereby granted, free of charge, to any person - * obtaining a copy of this software and associated documentation - * files (the "Software"), to deal in the Software without - * restriction, including without limitation the rights to use, copy, - * modify, merge, publish, distribute, sublicense, and/or sell copies - * of the Software, and to permit persons to whom the Software is - * furnished to do so, subject to the following conditions: - * - * The above copyright notice and this permission notice shall be - * included in all copies or substantial portions of the Software. - * - * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, - * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF - * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND - * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS - * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN - * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN - * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE - * SOFTWARE. - *****************************************************************************/ - -#ifndef _USB_DESCRIPTORS_H_ -#define _USB_DESCRIPTORS_H_ - -#include - -#define USB_DESCRIPTOR_TYPE_DEVICE 0x01 -#define USB_DESCRIPTOR_TYPE_CONFIGURATION 0x02 -#define USB_DESCRIPTOR_TYPE_STRING 0x03 -#define USB_DESCRIPTOR_TYPE_INTERFACE 0x04 -#define USB_DESCRIPTOR_TYPE_ENDPOINT 0x05 - -#define USB_DEVICE_CLASS_CDC 0x02 -#define USB_DEVICE_SUBCLASS_CDC 0x00 -#define USB_INTERFACE_CLASS_CDC 0x02 -/* CDC Abstract Control Model */ -#define USB_INTERFACE_SUBCLASS_CDC_ACM 0x02 -#define USB_INTERFACE_CLASS_DIC 0x0A - -#define USB_CONFIG_ATTR_BUSPOWERED 0b10000000 -#define USB_CONFIG_ATTR_SELF_POWERED 0b11000000 - -#define EP_TYPE_INTERRUPT 0x03 -#define EP_TYPE_BULK 0x02 - -#define USB_DESCRIPTOR_ENDPOINT_IN 0x80 -#define USB_DESCRIPTOR_ENDPOINT_OUT 0x00 - -#define USB_DESCRIPTOR_STRING_LEN(x) (2 + (x << 1)) - -#if defined(__cplusplus) -extern "C" { -#endif - -#define USB_DESCRIPTOR_STRING(len) \ - struct { \ - uint8 bLength; \ - uint8 bDescriptorType; \ - uint16 bString[len]; \ - } __packed - -#define CDC_FUNCTIONAL_DESCRIPTOR_SIZE(DataSize) (3 + DataSize) -#define CDC_FUNCTIONAL_DESCRIPTOR(DataSize) \ - struct { \ - uint8 bLength; \ - uint8 bDescriptorType; \ - uint8 SubType; \ - uint8 Data[DataSize]; \ - } __packed - -typedef struct { - uint8 bLength; - uint8 bDescriptorType; - uint16 bcdUSB; - uint8 bDeviceClass; - uint8 bDeviceSubClass; - uint8 bDeviceProtocol; - uint8 bMaxPacketSize0; - uint16 idVendor; - uint16 idProduct; - uint16 bcdDevice; - uint8 iManufacturer; - uint8 iProduct; - uint8 iSerialNumber; - uint8 bNumConfigurations; -} __packed USB_Descriptor_Device; - -typedef struct { - uint8 bLength; - uint8 bDescriptorType; - uint16 wTotalLength; - uint8 bNumInterfaces; - uint8 bConfigurationValue; - uint8 iConfiguration; - uint8 bmAttributes; - uint8 bMaxPower; -} __packed USB_Descriptor_Config_Header; - -typedef struct { - uint8 bLength; - uint8 bDescriptorType; - uint8 bInterfaceNumber; - uint8 bAlternateSetting; - uint8 bNumEndpoints; - uint8 bInterfaceClass; - uint8 bInterfaceSubClass; - uint8 bInterfaceProtocol; - uint8 iInterface; -} __packed USB_Descriptor_Interface; - -typedef struct { - uint8 bLength; - uint8 bDescriptorType; - uint8 bEndpointAddress; - uint8 bmAttributes; - uint16 wMaxPacketSize; - uint8 bInterval; -} __packed USB_Descriptor_Endpoint; - -typedef struct { - USB_Descriptor_Config_Header Config_Header; - USB_Descriptor_Interface CCI_Interface; - CDC_FUNCTIONAL_DESCRIPTOR(2) CDC_Functional_IntHeader; - CDC_FUNCTIONAL_DESCRIPTOR(2) CDC_Functional_CallManagement; - CDC_FUNCTIONAL_DESCRIPTOR(1) CDC_Functional_ACM; - CDC_FUNCTIONAL_DESCRIPTOR(2) CDC_Functional_Union; - USB_Descriptor_Endpoint ManagementEndpoint; - USB_Descriptor_Interface DCI_Interface; - USB_Descriptor_Endpoint DataOutEndpoint; - USB_Descriptor_Endpoint DataInEndpoint; -} __packed USB_Descriptor_Config; - -typedef struct { - uint8 bLength; - uint8 bDescriptorType; - uint16 bString[]; -} USB_Descriptor_String; - -#if defined(__cplusplus) -} -#endif - -#endif diff --git a/libmaple/usb/usb_lib_globals.h b/libmaple/usb/usb_lib_globals.h deleted file mode 100644 index 1cd2754..0000000 --- a/libmaple/usb/usb_lib_globals.h +++ /dev/null @@ -1,55 +0,0 @@ -/****************************************************************************** - * The MIT License - * - * Copyright (c) 2011 LeafLabs LLC. - * - * Permission is hereby granted, free of charge, to any person - * obtaining a copy of this software and associated documentation - * files (the "Software"), to deal in the Software without - * restriction, including without limitation the rights to use, copy, - * modify, merge, publish, distribute, sublicense, and/or sell copies - * of the Software, and to permit persons to whom the Software is - * furnished to do so, subject to the following conditions: - * - * The above copyright notice and this permission notice shall be included in - * all copies or substantial portions of the Software. - * - * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, - * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF - * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND - * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS - * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN - * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN - * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE - * SOFTWARE. - *****************************************************************************/ - -#ifndef _USB_LIB_GLOBALS_H_ -#define _USB_LIB_GLOBALS_H_ - -/* usb_lib headers */ -#include "usb_type.h" -#include "usb_core.h" - -#ifdef __cplusplus -extern "C" { -#endif - -extern USER_STANDARD_REQUESTS User_Standard_Requests; -extern USER_STANDARD_REQUESTS *pUser_Standard_Requests; - -extern DEVICE_PROP Device_Property; -extern DEVICE_PROP *pProperty; - -extern DEVICE_INFO Device_Info; -extern DEVICE_INFO *pInformation; - -extern DEVICE Device_Table; -extern u16 SaveRState; -extern u16 SaveTState; - -#ifdef __cplusplus -} -#endif - -#endif diff --git a/libmaple/usb/usb_reg_map.c b/libmaple/usb/usb_reg_map.c deleted file mode 100644 index 75562e1..0000000 --- a/libmaple/usb/usb_reg_map.c +++ /dev/null @@ -1,79 +0,0 @@ -/****************************************************************************** - * The MIT License - * - * Copyright (c) 2011 LeafLabs, LLC. - * - * Permission is hereby granted, free of charge, to any person - * obtaining a copy of this software and associated documentation - * files (the "Software"), to deal in the Software without - * restriction, including without limitation the rights to use, copy, - * modify, merge, publish, distribute, sublicense, and/or sell copies - * of the Software, and to permit persons to whom the Software is - * furnished to do so, subject to the following conditions: - * - * The above copyright notice and this permission notice shall be - * included in all copies or substantial portions of the Software. - * - * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, - * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF - * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND - * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS - * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN - * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN - * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE - * SOFTWARE. - *****************************************************************************/ - -#include "usb_reg_map.h" - -/* TODO these could use some improvement; they're fairly - * straightforward ports of the analogous ST code. The PMA blit - * routines in particular are obvious targets for performance - * measurement and tuning. */ - -void usb_copy_to_pma(const uint8 *buf, uint16 len, uint16 pma_offset) { - uint16 *dst = (uint16*)usb_pma_ptr(pma_offset); - uint16 n = len >> 1; - uint16 i; - for (i = 0; i < n; i++) { - *dst = (uint16)(*buf) | *(buf + 1) << 8; - buf += 2; - dst += 2; - } - if (len & 1) { - *dst = *buf; - } -} - -void usb_copy_from_pma(uint8 *buf, uint16 len, uint16 pma_offset) { - uint32 *src = (uint32*)usb_pma_ptr(pma_offset); - uint16 *dst = (uint16*)buf; - uint16 n = len >> 1; - uint16 i; - for (i = 0; i < n; i++) { - *dst++ = *src++; - } - if (len & 1) { - *dst = *src & 0xFF; - } -} - -void usb_set_ep_rx_count(uint8 ep, uint16 count) { - uint32 *rxc = usb_ep_rx_count_ptr(ep); - uint16 nblocks; - if (count > 62) { - /* use 32-byte memory block size */ - nblocks = count >> 5; - if ((count & 0x1F) == 0) { - nblocks--; - } - *rxc = (nblocks << 10) | 0x8000; - } else { - /* use 2-byte memory block size */ - nblocks = count >> 1; - if ((count & 0x1) != 0) { - nblocks++; - } - *rxc = nblocks << 10; - } -} diff --git a/libmaple/usb/usb_reg_map.h b/libmaple/usb/usb_reg_map.h deleted file mode 100644 index ce80842..0000000 --- a/libmaple/usb/usb_reg_map.h +++ /dev/null @@ -1,433 +0,0 @@ -/****************************************************************************** - * The MIT License - * - * Copyright (c) 2011 LeafLabs, LLC. - * - * Permission is hereby granted, free of charge, to any person - * obtaining a copy of this software and associated documentation - * files (the "Software"), to deal in the Software without - * restriction, including without limitation the rights to use, copy, - * modify, merge, publish, distribute, sublicense, and/or sell copies - * of the Software, and to permit persons to whom the Software is - * furnished to do so, subject to the following conditions: - * - * The above copyright notice and this permission notice shall be - * included in all copies or substantial portions of the Software. - * - * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, - * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF - * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND - * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS - * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN - * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN - * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE - * SOFTWARE. - *****************************************************************************/ - -#include -#include - -#ifndef _USB_REG_MAP_H_ -#define _USB_REG_MAP_H_ - -/* TODO: - * - Pick one of "endp", "ep" "endpt" - */ - -/* - * Register map and base pointer - */ - -#define USB_NR_EP_REGS 8 - -/** USB register map type */ -typedef struct usb_reg_map { - __io uint32 EP[USB_NR_EP_REGS]; /**< Endpoint registers */ - const uint32 RESERVED[8]; /**< Reserved */ - __io uint32 CNTR; /**< Control register */ - __io uint32 ISTR; /**< Interrupt status register */ - __io uint32 FNR; /**< Frame number register */ - __io uint32 DADDR; /**< Device address */ - __io uint32 BTABLE; /**< @brief Buffer table address - * - * Address offset within the USB - * packet memory area which points - * to the base of the buffer - * descriptor table. Must be - * aligned to an 8 byte boundary. - */ -} usb_reg_map; - -/** USB register map base pointer */ -#define USB_BASE ((struct usb_reg_map*)0x40005C00) - -/* - * Register bit definitions - */ - -/* Endpoint registers (USB_EPnR) */ - -#define USB_EP_CTR_RX_BIT 15 -#define USB_EP_DTOG_RX_BIT 14 -#define USB_EP_SETUP_BIT 11 -#define USB_EP_EP_KIND_BIT 8 -#define USB_EP_CTR_TX_BIT 7 -#define USB_EP_DTOG_TX_BIT 6 - -#define USB_EP_CTR_RX BIT(USB_EP_CTR_RX_BIT) -#define USB_EP_DTOG_RX BIT(USB_EP_DTOG_RX_BIT) -#define USB_EP_STAT_RX (0x3 << 12) -#define USB_EP_STAT_RX_DISABLED (0x0 << 12) -#define USB_EP_STAT_RX_STALL (0x1 << 12) -#define USB_EP_STAT_RX_NAK (0x2 << 12) -#define USB_EP_STAT_RX_VALID (0x3 << 12) -#define USB_EP_SETUP BIT(USB_EP_SETUP_BIT) -#define USB_EP_EP_TYPE (0x3 << 9) -#define USB_EP_EP_TYPE_BULK (0x0 << 9) -#define USB_EP_EP_TYPE_CONTROL (0x1 << 9) -#define USB_EP_EP_TYPE_ISO (0x2 << 9) -#define USB_EP_EP_TYPE_INTERRUPT (0x3 << 9) -#define USB_EP_EP_KIND BIT(USB_EP_EP_KIND_BIT) -#define USB_EP_CTR_TX BIT(USB_EP_CTR_TX_BIT) -#define USB_EP_DTOG_TX BIT(USB_EP_DTOG_TX_BIT) -#define USB_EP_STAT_TX (0x3 << 4) -#define USB_EP_STAT_TX_DISABLED (0x0 << 4) -#define USB_EP_STAT_TX_STALL (0x1 << 4) -#define USB_EP_STAT_TX_NAK (0x2 << 4) -#define USB_EP_STAT_TX_VALID (0x3 << 4) -#define USB_EP_EA 0xF - -/* Control register (USB_CNTR) */ - -#define USB_CNTR_CTRM_BIT 15 -#define USB_CNTR_PMAOVERM_BIT 14 -#define USB_CNTR_ERRM_BIT 13 -#define USB_CNTR_WKUPM_BIT 12 -#define USB_CNTR_SUSPM_BIT 11 -#define USB_CNTR_RESETM_BIT 10 -#define USB_CNTR_SOFM_BIT 9 -#define USB_CNTR_ESOFM_BIT 8 -#define USB_CNTR_RESUME_BIT 4 -#define USB_CNTR_FSUSP_BIT 3 -#define USB_CNTR_LP_MODE_BIT 2 -#define USB_CNTR_PDWN_BIT 1 -#define USB_CNTR_FRES_BIT 0 - -#define USB_CNTR_CTRM BIT(USB_CNTR_CTRM_BIT) -#define USB_CNTR_PMAOVERM BIT(USB_CNTR_PMAOVERM_BIT) -#define USB_CNTR_ERRM BIT(USB_CNTR_ERRM_BIT) -#define USB_CNTR_WKUPM BIT(USB_CNTR_WKUPM_BIT) -#define USB_CNTR_SUSPM BIT(USB_CNTR_SUSPM_BIT) -#define USB_CNTR_RESETM BIT(USB_CNTR_RESETM_BIT) -#define USB_CNTR_SOFM BIT(USB_CNTR_SOFM_BIT) -#define USB_CNTR_ESOFM BIT(USB_CNTR_ESOFM_BIT) -#define USB_CNTR_RESUME BIT(USB_CNTR_RESUME_BIT) -#define USB_CNTR_FSUSP BIT(USB_CNTR_FSUSP_BIT) -#define USB_CNTR_LP_MODE BIT(USB_CNTR_LP_MODE_BIT) -#define USB_CNTR_PDWN BIT(USB_CNTR_PDWN_BIT) -#define USB_CNTR_FRES BIT(USB_CNTR_FRES_BIT) - -/* Interrupt status register (USB_ISTR) */ - -#define USB_ISTR_CTR_BIT 15 -#define USB_ISTR_PMAOVR_BIT 14 -#define USB_ISTR_ERR_BIT 13 -#define USB_ISTR_WKUP_BIT 12 -#define USB_ISTR_SUSP_BIT 11 -#define USB_ISTR_RESET_BIT 10 -#define USB_ISTR_SOF_BIT 9 -#define USB_ISTR_ESOF_BIT 8 -#define USB_ISTR_DIR_BIT 4 - -#define USB_ISTR_CTR BIT(USB_ISTR_CTR_BIT) -#define USB_ISTR_PMAOVR BIT(USB_ISTR_PMAOVR_BIT) -#define USB_ISTR_ERR BIT(USB_ISTR_ERR_BIT) -#define USB_ISTR_WKUP BIT(USB_ISTR_WKUP_BIT) -#define USB_ISTR_SUSP BIT(USB_ISTR_SUSP_BIT) -#define USB_ISTR_RESET BIT(USB_ISTR_RESET_BIT) -#define USB_ISTR_SOF BIT(USB_ISTR_SOF_BIT) -#define USB_ISTR_ESOF BIT(USB_ISTR_ESOF_BIT) -#define USB_ISTR_DIR BIT(USB_ISTR_DIR_BIT) -#define USB_ISTR_EP_ID 0xF - -/* Frame number register (USB_FNR) */ - -#define USB_FNR_RXDP_BIT 15 -#define USB_FNR_RXDM_BIT 14 -#define USB_FNR_LCK_BIT 13 - -#define USB_FNR_RXDP BIT(USB_FNR_RXDP_BIT) -#define USB_FNR_RXDM BIT(USB_FNR_RXDM_BIT) -#define USB_FNR_LCK BIT(USB_FNR_LCK_BIT) -#define USB_FNR_LSOF (0x3 << 11) -#define USB_FNR_FN 0x7FF - -/* Device address (USB_DADDR) */ - -#define USB_DADDR_EF_BIT 7 -#define USB_DADDR_ADD6_BIT 6 -#define USB_DADDR_ADD5_BIT 5 -#define USB_DADDR_ADD4_BIT 4 -#define USB_DADDR_ADD3_BIT 3 -#define USB_DADDR_ADD2_BIT 2 -#define USB_DADDR_ADD1_BIT 1 -#define USB_DADDR_ADD0_BIT 0 - -#define USB_DADDR_EF BIT(USB_DADDR_EF_BIT) -#define USB_DADDR_ADD6 BIT(USB_DADDR_ADD6_BIT) -#define USB_DADDR_ADD5 BIT(USB_DADDR_ADD5_BIT) -#define USB_DADDR_ADD4 BIT(USB_DADDR_ADD4_BIT) -#define USB_DADDR_ADD3 BIT(USB_DADDR_ADD3_BIT) -#define USB_DADDR_ADD2 BIT(USB_DADDR_ADD2_BIT) -#define USB_DADDR_ADD1 BIT(USB_DADDR_ADD1_BIT) -#define USB_DADDR_ADD0 BIT(USB_DADDR_ADD0_BIT) - -/* Buffer table address (USB_BTABLE) */ - -#define USB_BTABLE_BTABLE (0x1FFF << 3) - -/* - * Register convenience routines - */ - -#define __EP_CTR_NOP (USB_EP_CTR_RX | USB_EP_CTR_TX) -#define __EP_NONTOGGLE (USB_EP_CTR_RX | USB_EP_SETUP | \ - USB_EP_EP_TYPE | USB_EP_EP_KIND | \ - USB_EP_CTR_TX | USB_EP_EA) - -static inline void usb_clear_ctr_rx(uint8 ep) { - uint32 epr = USB_BASE->EP[ep]; - USB_BASE->EP[ep] = epr & ~USB_EP_CTR_RX & __EP_NONTOGGLE; -} - -static inline void usb_clear_ctr_tx(uint8 ep) { - uint32 epr = USB_BASE->EP[ep]; - USB_BASE->EP[ep] = epr & ~USB_EP_CTR_TX & __EP_NONTOGGLE; -} - -static inline void usb_set_ep_rx_stat(uint8 ep, uint32 status) { - uint32 epr = USB_BASE->EP[ep]; - epr &= ~(USB_EP_STAT_TX | USB_EP_DTOG_RX | USB_EP_DTOG_TX); - epr |= __EP_CTR_NOP; - epr ^= status; - USB_BASE->EP[ep] = epr; -} - -static inline void usb_set_ep_tx_stat(uint8 ep, uint32 status) { - uint32 epr = USB_BASE->EP[ep]; - epr &= ~(USB_EP_STAT_RX | USB_EP_DTOG_RX | USB_EP_DTOG_TX); - epr |= __EP_CTR_NOP; - epr ^= status; - USB_BASE->EP[ep] = epr; -} - -static inline void usb_set_ep_type(uint8 ep, uint32 type) { - uint32 epr = USB_BASE->EP[ep]; - epr &= ~USB_EP_EP_TYPE & __EP_NONTOGGLE; - epr |= type; - USB_BASE->EP[ep] = epr; -} - -static inline void usb_set_ep_kind(uint8 ep, uint32 kind) { - uint32 epr = USB_BASE->EP[ep]; - epr &= ~USB_EP_EP_KIND & __EP_NONTOGGLE; - epr |= kind; - USB_BASE->EP[ep] = epr; -} - -static inline void usb_clear_status_out(uint8 ep) { - usb_set_ep_kind(ep, 0); -} - -/* - * Packet memory area (PMA) base pointer - */ - -/** - * @brief USB packet memory area (PMA) base pointer. - * - * The USB PMA is SRAM shared between USB and CAN. The USB peripheral - * accesses this memory directly via the packet buffer interface. */ -#define USB_PMA_BASE ((__io void*)0x40006000) - -/* - * PMA conveniences - */ - -void usb_copy_to_pma(const uint8 *buf, uint16 len, uint16 pma_offset); -void usb_copy_from_pma(uint8 *buf, uint16 len, uint16 pma_offset); - -static inline void* usb_pma_ptr(uint32 offset) { - return (void*)(USB_PMA_BASE + 2 * offset); -} - -/* - * BTABLE - */ - -/* (Forward-declared) BTABLE entry. - * - * The BTABLE can be viewed as an array of usb_btable_ent values; - * these vary in structure according to the configuration of the - * endpoint. - */ -union usb_btable_ent; - -/* Bidirectional endpoint BTABLE entry */ -typedef struct usb_btable_bidi { - __io uint16 addr_tx; const uint16 PAD1; - __io uint16 count_tx; const uint16 PAD2; - __io uint16 addr_rx; const uint16 PAD3; - __io uint16 count_rx; const uint16 PAD4; -} usb_btable_bidi; - -/* Unidirectional receive-only endpoint BTABLE entry */ -typedef struct usb_btable_uni_rx { - __io uint16 empty1; const uint16 PAD1; - __io uint16 empty2; const uint16 PAD2; - __io uint16 addr_rx; const uint16 PAD3; - __io uint16 count_rx; const uint16 PAD4; -} usb_btable_uni_rx; - -/* Unidirectional transmit-only endpoint BTABLE entry */ -typedef struct usb_btable_uni_tx { - __io uint16 addr_tx; const uint16 PAD1; - __io uint16 count_tx; const uint16 PAD2; - __io uint16 empty1; const uint16 PAD3; - __io uint16 empty2; const uint16 PAD4; -} usb_btable_uni_tx; - -/* Double-buffered transmission endpoint BTABLE entry */ -typedef struct usb_btable_dbl_tx { - __io uint16 addr_tx0; const uint16 PAD1; - __io uint16 count_tx0; const uint16 PAD2; - __io uint16 addr_tx1; const uint16 PAD3; - __io uint16 count_tx1; const uint16 PAD4; -} usb_btable_dbl_tx; - -/* Double-buffered reception endpoint BTABLE entry */ -typedef struct usb_btable_dbl_rx { - __io uint16 addr_rx0; const uint16 PAD1; - __io uint16 count_rx0; const uint16 PAD2; - __io uint16 addr_rx1; const uint16 PAD3; - __io uint16 count_rx1; const uint16 PAD4; -} usb_btable_dbl_rx; - -/* TODO isochronous endpoint entries */ - -/* Definition for above forward-declared BTABLE entry. */ -typedef union usb_btable_ent { - usb_btable_bidi bidi; - usb_btable_uni_rx u_rx; - usb_btable_uni_tx u_tx; - usb_btable_dbl_tx d_tx; - usb_btable_dbl_rx d_rx; -} usb_btable_ent; - -/* - * BTABLE conveniences - */ - -/* TODO (?) Convert usages of the many (and lengthily-named) - * accessors/mutators below to just manipulating usb_btable_entry - * values. */ - -static inline uint32* usb_btable_ptr(uint32 offset) { - return (uint32*)usb_pma_ptr(USB_BASE->BTABLE + offset); -} - -static inline usb_btable_ent *usb_btable(void) { - return (usb_btable_ent*)usb_btable_ptr(0); -} - -/* TX address */ - -static inline uint32* usb_ep_tx_addr_ptr(uint8 ep) { - return usb_btable_ptr(ep * 8); -} - -static inline uint16 usb_get_ep_tx_addr(uint8 ep) { - return (uint16)*usb_ep_tx_addr_ptr(ep); -} - -static inline void usb_set_ep_tx_addr(uint8 ep, uint16 addr) { - uint32 *tx_addr = usb_ep_tx_addr_ptr(ep); - *tx_addr = addr & ~0x1; -} - -/* RX address */ - -static inline uint32* usb_ep_rx_addr_ptr(uint8 ep) { - return usb_btable_ptr(ep * 8 + 4); -} - -static inline uint16 usb_get_ep_rx_addr(uint8 ep) { - return (uint16)*usb_ep_rx_addr_ptr(ep); -} - -static inline void usb_set_ep_rx_addr(uint8 ep, uint16 addr) { - uint32 *rx_addr = usb_ep_rx_addr_ptr(ep); - *rx_addr = addr & ~0x1; -} - -/* TX count (doesn't cover double-buffered and isochronous in) */ - -static inline uint32* usb_ep_tx_count_ptr(uint8 ep) { - return usb_btable_ptr(ep * 8 + 2); -} - -static inline uint16 usb_get_ep_tx_count(uint8 ep) { - return (uint16)*usb_ep_tx_count_ptr(ep); -} - -static inline void usb_set_ep_tx_count(uint8 ep, uint16 count) { - uint32 *txc = usb_ep_tx_count_ptr(ep); - *txc = count; -} - -/* RX count */ - -static inline uint32* usb_ep_rx_count_ptr(uint8 ep) { - return usb_btable_ptr(ep * 8 + 6); -} - -static inline uint16 usb_get_ep_rx_count(uint8 ep) { - return (uint16)*usb_ep_rx_count_ptr(ep) & 0x3FF; -} - -void usb_set_ep_rx_count(uint8 ep, uint16 count); - -/* - * Misc. types - */ - -typedef enum usb_ep { - USB_EP0, - USB_EP1, - USB_EP2, - USB_EP3, - USB_EP4, - USB_EP5, - USB_EP6, - USB_EP7, -} usb_ep; - -typedef enum usb_ep_type { - USB_EP_T_CTL = USB_EP_EP_TYPE_CONTROL, - USB_EP_T_BULK = USB_EP_EP_TYPE_BULK, - USB_EP_T_INT = USB_EP_EP_TYPE_INTERRUPT, - USB_EP_T_ISO = USB_EP_EP_TYPE_ISO -} usb_ep_type; - -typedef enum usb_ep_stat { - USB_EP_ST_RX_DIS = USB_EP_STAT_RX_DISABLED, - USB_EP_ST_RX_STL = USB_EP_STAT_RX_STALL, - USB_EP_ST_RX_NAK = USB_EP_STAT_RX_NAK, - USB_EP_ST_RX_VAL = USB_EP_STAT_RX_VALID, - USB_EP_ST_TX_DIS = USB_EP_STAT_TX_DISABLED, - USB_EP_ST_TX_STL = USB_EP_STAT_TX_STALL, - USB_EP_ST_TX_NAK = USB_EP_STAT_TX_NAK, - USB_EP_ST_TX_VAL = USB_EP_STAT_TX_VALID -} usb_ep_stat; - -#endif -- cgit v1.2.3