595 lines
18 KiB
C
595 lines
18 KiB
C
/*
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* The MIT License (MIT)
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*
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* Copyright (c) 2021 XMOS LIMITED
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*
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* Permission is hereby granted, free of charge, to any person obtaining a copy
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* of this software and associated documentation files (the "Software"), to deal
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* in the Software without restriction, including without limitation the rights
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* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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* copies of the Software, and to permit persons to whom the Software is
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* furnished to do so, subject to the following conditions:
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*
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* The above copyright notice and this permission notice shall be included in
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* all copies or substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
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* THE SOFTWARE.
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*
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* This file is part of the TinyUSB stack.
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*/
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#include "tusb_option.h"
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#if (TUSB_OPT_DEVICE_ENABLED && CFG_TUD_DFU_MODE)
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#include "device/usbd.h"
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#include "device/usbd_pvt.h"
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#include "dfu_device.h"
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//--------------------------------------------------------------------+
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// MACRO CONSTANT TYPEDEF
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//--------------------------------------------------------------------+
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//--------------------------------------------------------------------+
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// INTERNAL OBJECT & FUNCTION DECLARATION
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//--------------------------------------------------------------------+
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typedef struct
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{
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dfu_device_status_t status;
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dfu_state_t state;
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uint8_t attrs;
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bool blk_transfer_in_proc;
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uint8_t alt_num;
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uint16_t block;
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uint16_t length;
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CFG_TUSB_MEM_ALIGN uint8_t transfer_buf[CFG_TUD_DFU_TRANSFER_BUFFER_SIZE];
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} dfu_state_ctx_t;
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// Only a single dfu state is allowed
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CFG_TUSB_MEM_SECTION static dfu_state_ctx_t _dfu_ctx;
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static void dfu_req_dnload_setup(uint8_t rhport, tusb_control_request_t const * request);
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static void dfu_req_getstatus_reply(uint8_t rhport, tusb_control_request_t const * request);
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static void dfu_req_dnload_reply(uint8_t rhport, tusb_control_request_t const * request);
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static bool dfu_state_machine(uint8_t rhport, tusb_control_request_t const * request);
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static void reset_state(void)
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{
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_dfu_ctx.state = DFU_IDLE;
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_dfu_ctx.status = DFU_STATUS_OK;
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_dfu_ctx.blk_transfer_in_proc = false;
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}
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//--------------------------------------------------------------------+
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// Debug
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//--------------------------------------------------------------------+
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#if CFG_TUSB_DEBUG >= 2
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static tu_lookup_entry_t const _dfu_request_lookup[] =
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{
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{ .key = DFU_REQUEST_DETACH , .data = "DETACH" },
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{ .key = DFU_REQUEST_DNLOAD , .data = "DNLOAD" },
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{ .key = DFU_REQUEST_UPLOAD , .data = "UPLOAD" },
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{ .key = DFU_REQUEST_GETSTATUS , .data = "GETSTATUS" },
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{ .key = DFU_REQUEST_CLRSTATUS , .data = "CLRSTATUS" },
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{ .key = DFU_REQUEST_GETSTATE , .data = "GETSTATE" },
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{ .key = DFU_REQUEST_ABORT , .data = "ABORT" },
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};
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static tu_lookup_table_t const _dfu_request_table =
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{
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.count = TU_ARRAY_SIZE(_dfu_request_lookup),
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.items = _dfu_request_lookup
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};
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static tu_lookup_entry_t const _dfu_state_lookup[] =
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{
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{ .key = APP_IDLE , .data = "APP_IDLE" },
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{ .key = APP_DETACH , .data = "APP_DETACH" },
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{ .key = DFU_IDLE , .data = "DFU_IDLE" },
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{ .key = DFU_DNLOAD_SYNC , .data = "DFU_DNLOAD_SYNC" },
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{ .key = DFU_DNBUSY , .data = "DFU_DNBUSY" },
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{ .key = DFU_DNLOAD_IDLE , .data = "DFU_DNLOAD_IDLE" },
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{ .key = DFU_MANIFEST_SYNC , .data = "DFU_MANIFEST_SYNC" },
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{ .key = DFU_MANIFEST , .data = "DFU_MANIFEST" },
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{ .key = DFU_MANIFEST_WAIT_RESET , .data = "DFU_MANIFEST_WAIT_RESET" },
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{ .key = DFU_UPLOAD_IDLE , .data = "DFU_UPLOAD_IDLE" },
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{ .key = DFU_ERROR , .data = "DFU_ERROR" },
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};
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static tu_lookup_table_t const _dfu_state_table =
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{
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.count = TU_ARRAY_SIZE(_dfu_state_lookup),
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.items = _dfu_state_lookup
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};
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static tu_lookup_entry_t const _dfu_status_lookup[] =
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{
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{ .key = DFU_STATUS_OK , .data = "OK" },
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{ .key = DFU_STATUS_ERRTARGET , .data = "errTARGET" },
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{ .key = DFU_STATUS_ERRFILE , .data = "errFILE" },
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{ .key = DFU_STATUS_ERRWRITE , .data = "errWRITE" },
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{ .key = DFU_STATUS_ERRERASE , .data = "errERASE" },
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{ .key = DFU_STATUS_ERRCHECK_ERASED , .data = "errCHECK_ERASED" },
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{ .key = DFU_STATUS_ERRPROG , .data = "errPROG" },
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{ .key = DFU_STATUS_ERRVERIFY , .data = "errVERIFY" },
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{ .key = DFU_STATUS_ERRADDRESS , .data = "errADDRESS" },
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{ .key = DFU_STATUS_ERRNOTDONE , .data = "errNOTDONE" },
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{ .key = DFU_STATUS_ERRFIRMWARE , .data = "errFIRMWARE" },
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{ .key = DFU_STATUS_ERRVENDOR , .data = "errVENDOR" },
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{ .key = DFU_STATUS_ERRUSBR , .data = "errUSBR" },
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{ .key = DFU_STATUS_ERRPOR , .data = "errPOR" },
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{ .key = DFU_STATUS_ERRUNKNOWN , .data = "errUNKNOWN" },
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{ .key = DFU_STATUS_ERRSTALLEDPKT , .data = "errSTALLEDPKT" },
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};
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static tu_lookup_table_t const _dfu_status_table =
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{
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.count = TU_ARRAY_SIZE(_dfu_status_lookup),
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.items = _dfu_status_lookup
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};
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#endif
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#define dfu_debug_print_context() \
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{ \
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TU_LOG2(" DFU at State: %s\r\n Status: %s\r\n", \
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tu_lookup_find(&_dfu_state_table, _dfu_ctx.state), \
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tu_lookup_find(&_dfu_status_table, _dfu_ctx.status) ); \
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}
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//--------------------------------------------------------------------+
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// USBD Driver API
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//--------------------------------------------------------------------+
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void dfu_moded_init(void)
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{
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_dfu_ctx.state = DFU_IDLE;
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_dfu_ctx.status = DFU_STATUS_OK;
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_dfu_ctx.attrs = 0;
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_dfu_ctx.blk_transfer_in_proc = false;
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_dfu_ctx.alt_num = 0;
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dfu_debug_print_context();
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}
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void dfu_moded_reset(uint8_t rhport)
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{
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(void) rhport;
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_dfu_ctx.state = DFU_IDLE;
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_dfu_ctx.status = DFU_STATUS_OK;
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_dfu_ctx.attrs = 0;
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_dfu_ctx.blk_transfer_in_proc = false;
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_dfu_ctx.alt_num = 0;
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dfu_debug_print_context();
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}
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uint16_t dfu_moded_open(uint8_t rhport, tusb_desc_interface_t const * itf_desc, uint16_t max_len)
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{
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(void) rhport;
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//------------- Interface (with Alt) descriptor -------------//
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uint8_t const itf_num = itf_desc->bInterfaceNumber;
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uint8_t alt_count = 0;
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uint16_t drv_len = 0;
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while(itf_desc->bInterfaceSubClass == TUD_DFU_APP_SUBCLASS && itf_desc->bInterfaceProtocol == DFU_PROTOCOL_DFU)
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{
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TU_ASSERT(max_len > drv_len, 0);
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// Alternate must have the same interface number
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TU_ASSERT(itf_desc->bInterfaceNumber == itf_num, 0);
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// Alt should increase by one every time
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TU_ASSERT(itf_desc->bAlternateSetting == alt_count, 0);
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alt_count++;
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drv_len += tu_desc_len(itf_desc);
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itf_desc = (tusb_desc_interface_t const *) tu_desc_next(itf_desc);
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}
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//------------- DFU Functional descriptor -------------//
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tusb_desc_dfu_functional_t const *func_desc = (tusb_desc_dfu_functional_t const *) itf_desc;
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TU_ASSERT(tu_desc_type(func_desc) == TUSB_DESC_FUNCTIONAL, 0);
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drv_len += sizeof(tusb_desc_dfu_functional_t);
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_dfu_ctx.attrs = func_desc->bAttributes;
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// CFG_TUD_DFU_TRANSFER_BUFFER_SIZE has to be set to the buffer size used in TUD_DFU_DESCRIPTOR
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uint16_t const transfer_size = tu_le16toh( tu_unaligned_read16(&func_desc->wTransferSize) );
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TU_ASSERT(transfer_size <= CFG_TUD_DFU_TRANSFER_BUFFER_SIZE, drv_len);
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return drv_len;
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}
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// Invoked when a control transfer occurred on an interface of this class
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// Driver response accordingly to the request and the transfer stage (setup/data/ack)
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// return false to stall control endpoint (e.g unsupported request)
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bool dfu_moded_control_xfer_cb(uint8_t rhport, uint8_t stage, tusb_control_request_t const * request)
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{
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// nothing to do with DATA stage
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if ( stage == CONTROL_STAGE_DATA ) return true;
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TU_VERIFY(request->bmRequestType_bit.recipient == TUSB_REQ_RCPT_INTERFACE);
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if ( request->bmRequestType_bit.type == TUSB_REQ_TYPE_STANDARD )
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{
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// Standard request include GET/SET_INTERFACE
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switch ( request->bRequest )
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{
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case TUSB_REQ_SET_INTERFACE:
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if ( stage == CONTROL_STAGE_SETUP )
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{
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// Switch Alt interface and Re-initalize state machine
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_dfu_ctx.alt_num = (uint8_t) request->wValue;
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reset_state();
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return tud_control_status(rhport, request);
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}
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break;
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case TUSB_REQ_GET_INTERFACE:
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if(stage == CONTROL_STAGE_SETUP)
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{
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return tud_control_xfer(rhport, request, &_dfu_ctx.alt_num, 1);
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}
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break;
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// unsupported request
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default: return false;
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}
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}
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else if ( request->bmRequestType_bit.type == TUSB_REQ_TYPE_CLASS )
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{
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// Class request
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switch ( request->bRequest )
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{
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case DFU_REQUEST_DETACH:
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if ( stage == CONTROL_STAGE_SETUP )
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{
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tud_control_status(rhport, request);
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}
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else if ( stage == CONTROL_STAGE_ACK )
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{
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if (tud_dfu_detach_cb) tud_dfu_detach_cb();
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}
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break;
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case DFU_REQUEST_ABORT:
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if ( stage == CONTROL_STAGE_SETUP )
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{
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if (tud_dfu_abort_cb) tud_dfu_abort_cb(_dfu_ctx.alt_num);
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reset_state();
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tud_control_status(rhport, request);
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}
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break;
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case DFU_REQUEST_CLRSTATUS:
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if ( stage == CONTROL_STAGE_SETUP )
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{
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reset_state();
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tud_control_status(rhport, request);
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}
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break;
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case DFU_REQUEST_GETSTATE:
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if ( stage == CONTROL_STAGE_SETUP )
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{
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tud_control_xfer(rhport, request, &_dfu_ctx.state, 1);
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}
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break;
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case DFU_REQUEST_UPLOAD:
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if ( stage == CONTROL_STAGE_SETUP )
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{
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TU_VERIFY(_dfu_ctx.attrs & DFU_FUNC_ATTR_CAN_UPLOAD_BITMASK);
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TU_VERIFY(tud_dfu_upload_cb);
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TU_VERIFY(request->wLength <= CFG_TUD_DFU_TRANSFER_BUFFER_SIZE);
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uint16_t const xfer_len = tud_dfu_upload_cb(_dfu_ctx.alt_num, request->wValue, _dfu_ctx.transfer_buf, request->wLength);
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tud_control_xfer(rhport, request, _dfu_ctx.transfer_buf, xfer_len);
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}
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break;
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case DFU_REQUEST_DNLOAD:
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{
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if ( (stage == CONTROL_STAGE_ACK)
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&& ((_dfu_ctx.attrs & DFU_FUNC_ATTR_CAN_DOWNLOAD_BITMASK) != 0)
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&& (_dfu_ctx.state == DFU_DNLOAD_SYNC))
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{
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_dfu_ctx.block = request->wValue;
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_dfu_ctx.length = request->wLength;
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return true;
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}
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}
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// fallthrough
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case DFU_REQUEST_GETSTATUS:
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{
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if(stage == CONTROL_STAGE_SETUP)
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{
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return dfu_state_machine(rhport, request);
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}
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}
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break;
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default:
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return false; // stall unsupported request
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break;
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}
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}else
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{
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return false; // unsupported request
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}
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return true;
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}
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static void dfu_req_getstatus_reply(uint8_t rhport, tusb_control_request_t const * request)
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{
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uint32_t timeout = 0;
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if ( tud_dfu_get_status_cb )
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{
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timeout = tud_dfu_get_status_cb(_dfu_ctx.alt_num, _dfu_ctx.state);
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}
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dfu_status_req_payload_t resp;
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resp.bStatus = _dfu_ctx.status;
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resp.bwPollTimeout[0] = TU_U32_BYTE0(timeout);
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resp.bwPollTimeout[1] = TU_U32_BYTE1(timeout);
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resp.bwPollTimeout[2] = TU_U32_BYTE2(timeout);
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resp.bState = _dfu_ctx.state;
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resp.iString = 0;
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tud_control_xfer(rhport, request, &resp, sizeof(dfu_status_req_payload_t));
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}
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static void dfu_req_dnload_setup(uint8_t rhport, tusb_control_request_t const * request)
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{
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// TODO: add "zero" copy mode so the buffer we read into can be provided by the user
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// if they wish, there still will be the internal control buffer copy to this buffer
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// but this mode would provide zero copy from the class driver to the application
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TU_VERIFY( request->wLength <= CFG_TUD_DFU_TRANSFER_BUFFER_SIZE, );
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// setup for data phase
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tud_control_xfer(rhport, request, _dfu_ctx.transfer_buf, request->wLength);
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}
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static void dfu_req_dnload_reply(uint8_t rhport, tusb_control_request_t const * request)
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{
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(void) rhport;
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TU_VERIFY( request->wLength <= CFG_TUD_DFU_TRANSFER_BUFFER_SIZE, );
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tud_dfu_download_cb(_dfu_ctx.alt_num,_dfu_ctx.block, (uint8_t *)_dfu_ctx.transfer_buf, _dfu_ctx.length);
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_dfu_ctx.blk_transfer_in_proc = false;
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}
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void tud_dfu_download_complete(void)
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{
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if (_dfu_ctx.state == DFU_DNBUSY)
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{
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_dfu_ctx.state = DFU_DNLOAD_SYNC;
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} else if (_dfu_ctx.state == DFU_MANIFEST)
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{
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_dfu_ctx.state = ((_dfu_ctx.attrs & DFU_FUNC_ATTR_MANIFESTATION_TOLERANT_BITMASK) == 0)
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? DFU_MANIFEST_WAIT_RESET : DFU_MANIFEST_SYNC;
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}
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}
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static bool dfu_state_machine(uint8_t rhport, tusb_control_request_t const * request)
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{
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TU_LOG2(" DFU Request: %s\r\n", tu_lookup_find(&_dfu_request_table, request->bRequest));
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TU_LOG2(" DFU State Machine: %s\r\n", tu_lookup_find(&_dfu_state_table, _dfu_ctx.state));
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switch (_dfu_ctx.state)
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{
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case DFU_IDLE:
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{
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switch (request->bRequest)
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{
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case DFU_REQUEST_DNLOAD:
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{
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if( ((_dfu_ctx.attrs & DFU_FUNC_ATTR_CAN_DOWNLOAD_BITMASK) != 0)
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&& (request->wLength > 0) )
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{
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_dfu_ctx.state = DFU_DNLOAD_SYNC;
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_dfu_ctx.blk_transfer_in_proc = true;
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dfu_req_dnload_setup(rhport, request);
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} else {
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_dfu_ctx.state = DFU_ERROR;
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}
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}
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break;
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case DFU_REQUEST_GETSTATUS:
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dfu_req_getstatus_reply(rhport, request);
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break;
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default:
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_dfu_ctx.state = DFU_ERROR;
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return false; // stall on all other requests
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break;
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}
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}
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break;
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case DFU_DNLOAD_SYNC:
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{
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switch (request->bRequest)
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{
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case DFU_REQUEST_GETSTATUS:
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{
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if ( _dfu_ctx.blk_transfer_in_proc )
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{
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_dfu_ctx.state = DFU_DNBUSY;
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dfu_req_getstatus_reply(rhport, request);
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dfu_req_dnload_reply(rhport, request);
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} else {
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_dfu_ctx.state = DFU_DNLOAD_IDLE;
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dfu_req_getstatus_reply(rhport, request);
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}
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}
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break;
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default:
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_dfu_ctx.state = DFU_ERROR;
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return false; // stall on all other requests
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break;
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}
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}
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break;
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case DFU_DNBUSY:
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{
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switch (request->bRequest)
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{
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default:
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_dfu_ctx.state = DFU_ERROR;
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return false; // stall on all other requests
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break;
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}
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}
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break;
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case DFU_DNLOAD_IDLE:
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{
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switch (request->bRequest)
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{
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case DFU_REQUEST_DNLOAD:
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{
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if( ((_dfu_ctx.attrs & DFU_FUNC_ATTR_CAN_DOWNLOAD_BITMASK) != 0)
|
|
&& (request->wLength > 0) )
|
|
{
|
|
_dfu_ctx.state = DFU_DNLOAD_SYNC;
|
|
_dfu_ctx.blk_transfer_in_proc = true;
|
|
dfu_req_dnload_setup(rhport, request);
|
|
} else {
|
|
if ( tud_dfu_device_data_done_check_cb(_dfu_ctx.alt_num) )
|
|
{
|
|
_dfu_ctx.state = DFU_MANIFEST_SYNC;
|
|
tud_control_status(rhport, request);
|
|
} else {
|
|
_dfu_ctx.state = DFU_ERROR;
|
|
return false; // stall
|
|
}
|
|
}
|
|
}
|
|
break;
|
|
|
|
case DFU_REQUEST_GETSTATUS:
|
|
dfu_req_getstatus_reply(rhport, request);
|
|
break;
|
|
|
|
default:
|
|
_dfu_ctx.state = DFU_ERROR;
|
|
return false; // stall on all other requests
|
|
break;
|
|
}
|
|
}
|
|
break;
|
|
|
|
case DFU_MANIFEST_SYNC:
|
|
{
|
|
switch (request->bRequest)
|
|
{
|
|
case DFU_REQUEST_GETSTATUS:
|
|
{
|
|
if ((_dfu_ctx.attrs & DFU_FUNC_ATTR_MANIFESTATION_TOLERANT_BITMASK) == 0)
|
|
{
|
|
_dfu_ctx.state = DFU_MANIFEST;
|
|
dfu_req_getstatus_reply(rhport, request);
|
|
} else
|
|
{
|
|
if ( tud_dfu_firmware_valid_check_cb(_dfu_ctx.alt_num) )
|
|
{
|
|
_dfu_ctx.state = DFU_IDLE;
|
|
}
|
|
dfu_req_getstatus_reply(rhport, request);
|
|
}
|
|
}
|
|
break;
|
|
|
|
default:
|
|
_dfu_ctx.state = DFU_ERROR;
|
|
return false; // stall on all other requests
|
|
break;
|
|
}
|
|
}
|
|
break;
|
|
|
|
case DFU_MANIFEST:
|
|
{
|
|
switch (request->bRequest)
|
|
{
|
|
// stall on all other requests
|
|
default:
|
|
return false;
|
|
break;
|
|
}
|
|
}
|
|
break;
|
|
|
|
case DFU_MANIFEST_WAIT_RESET:
|
|
{
|
|
// technically we should never even get here, but we will handle it just in case
|
|
TU_LOG2(" DFU was in DFU_MANIFEST_WAIT_RESET and got unexpected request: %u\r\n", request->bRequest);
|
|
switch (request->bRequest)
|
|
{
|
|
default:
|
|
return false; // stall on all other requests
|
|
break;
|
|
}
|
|
}
|
|
break;
|
|
|
|
case DFU_UPLOAD_IDLE:
|
|
{
|
|
switch (request->bRequest)
|
|
{
|
|
case DFU_REQUEST_GETSTATUS:
|
|
dfu_req_getstatus_reply(rhport, request);
|
|
break;
|
|
|
|
default:
|
|
return false; // stall on all other requests
|
|
break;
|
|
}
|
|
}
|
|
break;
|
|
|
|
case DFU_ERROR:
|
|
{
|
|
switch (request->bRequest)
|
|
{
|
|
case DFU_REQUEST_GETSTATUS:
|
|
dfu_req_getstatus_reply(rhport, request);
|
|
break;
|
|
|
|
default:
|
|
return false; // stall on all other requests
|
|
break;
|
|
}
|
|
}
|
|
break;
|
|
|
|
default:
|
|
_dfu_ctx.state = DFU_ERROR;
|
|
TU_LOG2(" DFU ERROR: Unexpected state\r\nStalling control pipe\r\n");
|
|
return false; // Unexpected state, stall and change to error
|
|
}
|
|
|
|
return true;
|
|
}
|
|
|
|
|
|
#endif
|