diff options
Diffstat (limited to 'tinyusb/src/class/dfu/dfu_device.c')
| -rwxr-xr-x | tinyusb/src/class/dfu/dfu_device.c | 458 |
1 files changed, 458 insertions, 0 deletions
diff --git a/tinyusb/src/class/dfu/dfu_device.c b/tinyusb/src/class/dfu/dfu_device.c new file mode 100755 index 00000000..28abf6e8 --- /dev/null +++ b/tinyusb/src/class/dfu/dfu_device.c @@ -0,0 +1,458 @@ +/* + * The MIT License (MIT) + * + * Copyright (c) 2021 XMOS LIMITED + * + * 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. + * + * This file is part of the TinyUSB stack. + */ + +#include "tusb_option.h" + +#if (TUSB_OPT_DEVICE_ENABLED && CFG_TUD_DFU) + +#include "device/usbd.h" +#include "device/usbd_pvt.h" + +#include "dfu_device.h" + +//--------------------------------------------------------------------+ +// MACRO CONSTANT TYPEDEF +//--------------------------------------------------------------------+ + +//--------------------------------------------------------------------+ +// INTERNAL OBJECT & FUNCTION DECLARATION +//--------------------------------------------------------------------+ +typedef struct +{ + uint8_t attrs; + uint8_t alt; + + dfu_state_t state; + dfu_status_t status; + + bool flashing_in_progress; + uint16_t block; + uint16_t length; + + CFG_TUSB_MEM_ALIGN uint8_t transfer_buf[CFG_TUD_DFU_XFER_BUFSIZE]; +} dfu_state_ctx_t; + +// Only a single dfu state is allowed +CFG_TUSB_MEM_SECTION static dfu_state_ctx_t _dfu_ctx; + +static void reset_state(void) +{ + _dfu_ctx.state = DFU_IDLE; + _dfu_ctx.status = DFU_STATUS_OK; + _dfu_ctx.flashing_in_progress = false; +} + +static bool reply_getstatus(uint8_t rhport, tusb_control_request_t const * request, dfu_state_t state, dfu_status_t status, uint32_t timeout); +static bool process_download_get_status(uint8_t rhport, uint8_t stage, tusb_control_request_t const * request); +static bool process_manifest_get_status(uint8_t rhport, uint8_t stage, tusb_control_request_t const * request); + +//--------------------------------------------------------------------+ +// Debug +//--------------------------------------------------------------------+ +#if CFG_TUSB_DEBUG >= 2 + +static tu_lookup_entry_t const _dfu_request_lookup[] = +{ + { .key = DFU_REQUEST_DETACH , .data = "DETACH" }, + { .key = DFU_REQUEST_DNLOAD , .data = "DNLOAD" }, + { .key = DFU_REQUEST_UPLOAD , .data = "UPLOAD" }, + { .key = DFU_REQUEST_GETSTATUS , .data = "GETSTATUS" }, + { .key = DFU_REQUEST_CLRSTATUS , .data = "CLRSTATUS" }, + { .key = DFU_REQUEST_GETSTATE , .data = "GETSTATE" }, + { .key = DFU_REQUEST_ABORT , .data = "ABORT" }, +}; + +static tu_lookup_table_t const _dfu_request_table = +{ + .count = TU_ARRAY_SIZE(_dfu_request_lookup), + .items = _dfu_request_lookup +}; + +static tu_lookup_entry_t const _dfu_state_lookup[] = +{ + { .key = APP_IDLE , .data = "APP_IDLE" }, + { .key = APP_DETACH , .data = "APP_DETACH" }, + { .key = DFU_IDLE , .data = "IDLE" }, + { .key = DFU_DNLOAD_SYNC , .data = "DNLOAD_SYNC" }, + { .key = DFU_DNBUSY , .data = "DNBUSY" }, + { .key = DFU_DNLOAD_IDLE , .data = "DNLOAD_IDLE" }, + { .key = DFU_MANIFEST_SYNC , .data = "MANIFEST_SYNC" }, + { .key = DFU_MANIFEST , .data = "MANIFEST" }, + { .key = DFU_MANIFEST_WAIT_RESET , .data = "MANIFEST_WAIT_RESET" }, + { .key = DFU_UPLOAD_IDLE , .data = "UPLOAD_IDLE" }, + { .key = DFU_ERROR , .data = "ERROR" }, +}; + +static tu_lookup_table_t const _dfu_state_table = +{ + .count = TU_ARRAY_SIZE(_dfu_state_lookup), + .items = _dfu_state_lookup +}; + +static tu_lookup_entry_t const _dfu_status_lookup[] = +{ + { .key = DFU_STATUS_OK , .data = "OK" }, + { .key = DFU_STATUS_ERR_TARGET , .data = "errTARGET" }, + { .key = DFU_STATUS_ERR_FILE , .data = "errFILE" }, + { .key = DFU_STATUS_ERR_WRITE , .data = "errWRITE" }, + { .key = DFU_STATUS_ERR_ERASE , .data = "errERASE" }, + { .key = DFU_STATUS_ERR_CHECK_ERASED , .data = "errCHECK_ERASED" }, + { .key = DFU_STATUS_ERR_PROG , .data = "errPROG" }, + { .key = DFU_STATUS_ERR_VERIFY , .data = "errVERIFY" }, + { .key = DFU_STATUS_ERR_ADDRESS , .data = "errADDRESS" }, + { .key = DFU_STATUS_ERR_NOTDONE , .data = "errNOTDONE" }, + { .key = DFU_STATUS_ERR_FIRMWARE , .data = "errFIRMWARE" }, + { .key = DFU_STATUS_ERR_VENDOR , .data = "errVENDOR" }, + { .key = DFU_STATUS_ERR_USBR , .data = "errUSBR" }, + { .key = DFU_STATUS_ERR_POR , .data = "errPOR" }, + { .key = DFU_STATUS_ERR_UNKNOWN , .data = "errUNKNOWN" }, + { .key = DFU_STATUS_ERR_STALLEDPKT , .data = "errSTALLEDPKT" }, +}; + +static tu_lookup_table_t const _dfu_status_table = +{ + .count = TU_ARRAY_SIZE(_dfu_status_lookup), + .items = _dfu_status_lookup +}; + +#endif + +//--------------------------------------------------------------------+ +// USBD Driver API +//--------------------------------------------------------------------+ +void dfu_moded_reset(uint8_t rhport) +{ + (void) rhport; + + _dfu_ctx.attrs = 0; + _dfu_ctx.alt = 0; + + reset_state(); +} + +void dfu_moded_init(void) +{ + dfu_moded_reset(0); +} + +uint16_t dfu_moded_open(uint8_t rhport, tusb_desc_interface_t const * itf_desc, uint16_t max_len) +{ + (void) rhport; + + //------------- Interface (with Alt) descriptor -------------// + uint8_t const itf_num = itf_desc->bInterfaceNumber; + uint8_t alt_count = 0; + + uint16_t drv_len = 0; + while(itf_desc->bInterfaceSubClass == TUD_DFU_APP_SUBCLASS && itf_desc->bInterfaceProtocol == DFU_PROTOCOL_DFU) + { + TU_ASSERT(max_len > drv_len, 0); + + // Alternate must have the same interface number + TU_ASSERT(itf_desc->bInterfaceNumber == itf_num, 0); + + // Alt should increase by one every time + TU_ASSERT(itf_desc->bAlternateSetting == alt_count, 0); + alt_count++; + + drv_len += tu_desc_len(itf_desc); + itf_desc = (tusb_desc_interface_t const *) tu_desc_next(itf_desc); + } + + //------------- DFU Functional descriptor -------------// + tusb_desc_dfu_functional_t const *func_desc = (tusb_desc_dfu_functional_t const *) itf_desc; + TU_ASSERT(tu_desc_type(func_desc) == TUSB_DESC_FUNCTIONAL, 0); + drv_len += sizeof(tusb_desc_dfu_functional_t); + + _dfu_ctx.attrs = func_desc->bAttributes; + + // CFG_TUD_DFU_XFER_BUFSIZE has to be set to the buffer size used in TUD_DFU_DESCRIPTOR + uint16_t const transfer_size = tu_le16toh( tu_unaligned_read16((uint8_t*) func_desc + offsetof(tusb_desc_dfu_functional_t, wTransferSize)) ); + TU_ASSERT(transfer_size <= CFG_TUD_DFU_XFER_BUFSIZE, drv_len); + + return drv_len; +} + +// Invoked when a control transfer occurred on an interface of this class +// Driver response accordingly to the request and the transfer stage (setup/data/ack) +// return false to stall control endpoint (e.g unsupported request) +bool dfu_moded_control_xfer_cb(uint8_t rhport, uint8_t stage, tusb_control_request_t const * request) +{ + TU_VERIFY(request->bmRequestType_bit.recipient == TUSB_REQ_RCPT_INTERFACE); + + TU_LOG2(" DFU State : %s, Status: %s\r\n", tu_lookup_find(&_dfu_state_table, _dfu_ctx.state), tu_lookup_find(&_dfu_status_table, _dfu_ctx.status)); + + if ( request->bmRequestType_bit.type == TUSB_REQ_TYPE_STANDARD ) + { + // Standard request include GET/SET_INTERFACE + switch ( request->bRequest ) + { + case TUSB_REQ_SET_INTERFACE: + if ( stage == CONTROL_STAGE_SETUP ) + { + // Switch Alt interface and reset state machine + _dfu_ctx.alt = (uint8_t) request->wValue; + reset_state(); + return tud_control_status(rhport, request); + } + break; + + case TUSB_REQ_GET_INTERFACE: + if(stage == CONTROL_STAGE_SETUP) + { + return tud_control_xfer(rhport, request, &_dfu_ctx.alt, 1); + } + break; + + // unsupported request + default: return false; + } + } + else if ( request->bmRequestType_bit.type == TUSB_REQ_TYPE_CLASS ) + { + TU_LOG2(" DFU Request: %s\r\n", tu_lookup_find(&_dfu_request_table, request->bRequest)); + + // Class request + switch ( request->bRequest ) + { + case DFU_REQUEST_DETACH: + if ( stage == CONTROL_STAGE_SETUP ) + { + tud_control_status(rhport, request); + } + else if ( stage == CONTROL_STAGE_ACK ) + { + if ( tud_dfu_detach_cb ) tud_dfu_detach_cb(); + } + break; + + case DFU_REQUEST_CLRSTATUS: + if ( stage == CONTROL_STAGE_SETUP ) + { + reset_state(); + tud_control_status(rhport, request); + } + break; + + case DFU_REQUEST_GETSTATE: + if ( stage == CONTROL_STAGE_SETUP ) + { + tud_control_xfer(rhport, request, &_dfu_ctx.state, 1); + } + break; + + case DFU_REQUEST_ABORT: + if ( stage == CONTROL_STAGE_SETUP ) + { + reset_state(); + tud_control_status(rhport, request); + } + else if ( stage == CONTROL_STAGE_ACK ) + { + if ( tud_dfu_abort_cb ) tud_dfu_abort_cb(_dfu_ctx.alt); + } + break; + + case DFU_REQUEST_UPLOAD: + if ( stage == CONTROL_STAGE_SETUP ) + { + TU_VERIFY(_dfu_ctx.attrs & DFU_ATTR_CAN_UPLOAD); + TU_VERIFY(tud_dfu_upload_cb); + TU_VERIFY(request->wLength <= CFG_TUD_DFU_XFER_BUFSIZE); + + uint16_t const xfer_len = tud_dfu_upload_cb(_dfu_ctx.alt, request->wValue, _dfu_ctx.transfer_buf, request->wLength); + + return tud_control_xfer(rhport, request, _dfu_ctx.transfer_buf, xfer_len); + } + break; + + case DFU_REQUEST_DNLOAD: + if ( stage == CONTROL_STAGE_SETUP ) + { + TU_VERIFY(_dfu_ctx.attrs & DFU_ATTR_CAN_DOWNLOAD); + TU_VERIFY(_dfu_ctx.state == DFU_IDLE || _dfu_ctx.state == DFU_DNLOAD_IDLE); + TU_VERIFY(request->wLength <= CFG_TUD_DFU_XFER_BUFSIZE); + + // set to true for both download and manifest + _dfu_ctx.flashing_in_progress = true; + + // save block and length for flashing + _dfu_ctx.block = request->wValue; + _dfu_ctx.length = request->wLength; + + if ( request->wLength ) + { + // Download with payload -> transition to DOWNLOAD SYNC + _dfu_ctx.state = DFU_DNLOAD_SYNC; + return tud_control_xfer(rhport, request, _dfu_ctx.transfer_buf, request->wLength); + } + else + { + // Download is complete -> transition to MANIFEST SYNC + _dfu_ctx.state = DFU_MANIFEST_SYNC; + return tud_control_status(rhport, request); + } + } + break; + + case DFU_REQUEST_GETSTATUS: + switch ( _dfu_ctx.state ) + { + case DFU_DNLOAD_SYNC: + return process_download_get_status(rhport, stage, request); + break; + + case DFU_MANIFEST_SYNC: + return process_manifest_get_status(rhport, stage, request); + break; + + default: + if ( stage == CONTROL_STAGE_SETUP ) return reply_getstatus(rhport, request, _dfu_ctx.state, _dfu_ctx.status, 0); + break; + } + break; + + default: return false; // stall unsupported request + } + }else + { + return false; // unsupported request + } + + return true; +} + +void tud_dfu_finish_flashing(uint8_t status) +{ + _dfu_ctx.flashing_in_progress = false; + + if ( status == DFU_STATUS_OK ) + { + if (_dfu_ctx.state == DFU_DNBUSY) + { + _dfu_ctx.state = DFU_DNLOAD_SYNC; + } + else if (_dfu_ctx.state == DFU_MANIFEST) + { + _dfu_ctx.state = (_dfu_ctx.attrs & DFU_ATTR_MANIFESTATION_TOLERANT) + ? DFU_MANIFEST_SYNC : DFU_MANIFEST_WAIT_RESET; + } + } + else + { + // failed while flashing, move to dfuError + _dfu_ctx.state = DFU_ERROR; + _dfu_ctx.status = (dfu_status_t)status; + } +} + +static bool process_download_get_status(uint8_t rhport, uint8_t stage, tusb_control_request_t const * request) +{ + if ( stage == CONTROL_STAGE_SETUP ) + { + // only transition to next state on CONTROL_STAGE_ACK + dfu_state_t next_state; + uint32_t timeout; + + if ( _dfu_ctx.flashing_in_progress ) + { + next_state = DFU_DNBUSY; + timeout = tud_dfu_get_timeout_cb(_dfu_ctx.alt, (uint8_t) next_state); + } + else + { + next_state = DFU_DNLOAD_IDLE; + timeout = 0; + } + + return reply_getstatus(rhport, request, next_state, _dfu_ctx.status, timeout); + } + else if ( stage == CONTROL_STAGE_ACK ) + { + if ( _dfu_ctx.flashing_in_progress ) + { + _dfu_ctx.state = DFU_DNBUSY; + tud_dfu_download_cb(_dfu_ctx.alt, _dfu_ctx.block, _dfu_ctx.transfer_buf, _dfu_ctx.length); + }else + { + _dfu_ctx.state = DFU_DNLOAD_IDLE; + } + } + + return true; +} + +static bool process_manifest_get_status(uint8_t rhport, uint8_t stage, tusb_control_request_t const * request) +{ + if ( stage == CONTROL_STAGE_SETUP ) + { + // only transition to next state on CONTROL_STAGE_ACK + dfu_state_t next_state; + uint32_t timeout; + + if ( _dfu_ctx.flashing_in_progress ) + { + next_state = DFU_MANIFEST; + timeout = tud_dfu_get_timeout_cb(_dfu_ctx.alt, next_state); + } + else + { + next_state = DFU_IDLE; + timeout = 0; + } + + return reply_getstatus(rhport, request, next_state, _dfu_ctx.status, timeout); + } + else if ( stage == CONTROL_STAGE_ACK ) + { + if ( _dfu_ctx.flashing_in_progress ) + { + _dfu_ctx.state = DFU_MANIFEST; + tud_dfu_manifest_cb(_dfu_ctx.alt); + } + else + { + _dfu_ctx.state = DFU_IDLE; + } + } + + return true; +} + +static bool reply_getstatus(uint8_t rhport, tusb_control_request_t const * request, dfu_state_t state, dfu_status_t status, uint32_t timeout) +{ + dfu_status_response_t resp; + resp.bStatus = (uint8_t) status; + resp.bwPollTimeout[0] = TU_U32_BYTE0(timeout); + resp.bwPollTimeout[1] = TU_U32_BYTE1(timeout); + resp.bwPollTimeout[2] = TU_U32_BYTE2(timeout); + resp.bState = (uint8_t) state; + resp.iString = 0; + + return tud_control_xfer(rhport, request, &resp, sizeof(dfu_status_response_t)); +} + +#endif |