mirror of
https://github.com/trezor/trezor-firmware.git
synced 2024-11-18 13:38:12 +00:00
783 lines
16 KiB
C
783 lines
16 KiB
C
/**
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******************************************************************************
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* @file usbd_req.c
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* @author MCD Application Team
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* @version V2.4.2
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* @date 11-December-2015
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* @brief This file provides the standard USB requests following chapter 9.
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******************************************************************************
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* @attention
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*
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* <h2><center>© COPYRIGHT 2015 STMicroelectronics</center></h2>
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*
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* Licensed under MCD-ST Liberty SW License Agreement V2, (the "License");
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* You may not use this file except in compliance with the License.
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* You may obtain a copy of the License at:
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*
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* http://www.st.com/software_license_agreement_liberty_v2
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*
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******************************************************************************
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*/
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/* Includes ------------------------------------------------------------------*/
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#include "usbd_ctlreq.h"
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#include "usbd_ioreq.h"
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/** @addtogroup STM32_USBD_STATE_DEVICE_LIBRARY
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* @{
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*/
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/** @defgroup USBD_REQ
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* @brief USB standard requests module
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* @{
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*/
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/** @defgroup USBD_REQ_Private_TypesDefinitions
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* @{
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*/
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/**
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* @}
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*/
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/** @defgroup USBD_REQ_Private_Defines
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* @{
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*/
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/**
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* @}
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*/
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/** @defgroup USBD_REQ_Private_Macros
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* @{
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*/
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/**
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* @}
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*/
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/** @defgroup USBD_REQ_Private_Variables
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* @{
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*/
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/**
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* @}
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*/
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/** @defgroup USBD_REQ_Private_FunctionPrototypes
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* @{
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*/
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static void USBD_GetDescriptor(USBD_HandleTypeDef *pdev ,
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USBD_SetupReqTypedef *req);
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static void USBD_SetAddress(USBD_HandleTypeDef *pdev ,
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USBD_SetupReqTypedef *req);
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static void USBD_SetConfig(USBD_HandleTypeDef *pdev ,
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USBD_SetupReqTypedef *req);
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static void USBD_GetConfig(USBD_HandleTypeDef *pdev ,
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USBD_SetupReqTypedef *req);
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static void USBD_GetStatus(USBD_HandleTypeDef *pdev ,
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USBD_SetupReqTypedef *req);
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static void USBD_SetFeature(USBD_HandleTypeDef *pdev ,
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USBD_SetupReqTypedef *req);
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static void USBD_ClrFeature(USBD_HandleTypeDef *pdev ,
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USBD_SetupReqTypedef *req);
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static uint8_t USBD_GetLen(uint8_t *buf);
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/**
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* @}
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*/
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/** @defgroup USBD_REQ_Private_Functions
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* @{
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*/
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/**
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* @brief USBD_StdDevReq
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* Handle standard usb device requests
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* @param pdev: device instance
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* @param req: usb request
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* @retval status
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*/
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USBD_StatusTypeDef USBD_StdDevReq (USBD_HandleTypeDef *pdev , USBD_SetupReqTypedef *req)
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{
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USBD_StatusTypeDef ret = USBD_OK;
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switch (req->bRequest)
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{
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case USB_REQ_GET_DESCRIPTOR:
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USBD_GetDescriptor (pdev, req) ;
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break;
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case USB_REQ_SET_ADDRESS:
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USBD_SetAddress(pdev, req);
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break;
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case USB_REQ_SET_CONFIGURATION:
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USBD_SetConfig (pdev , req);
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break;
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case USB_REQ_GET_CONFIGURATION:
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USBD_GetConfig (pdev , req);
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break;
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case USB_REQ_GET_STATUS:
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USBD_GetStatus (pdev , req);
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break;
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case USB_REQ_SET_FEATURE:
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USBD_SetFeature (pdev , req);
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break;
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case USB_REQ_CLEAR_FEATURE:
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USBD_ClrFeature (pdev , req);
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break;
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default:
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USBD_CtlError(pdev , req);
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break;
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}
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return ret;
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}
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/**
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* @brief USBD_StdItfReq
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* Handle standard usb interface requests
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* @param pdev: device instance
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* @param req: usb request
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* @retval status
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*/
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USBD_StatusTypeDef USBD_StdItfReq (USBD_HandleTypeDef *pdev , USBD_SetupReqTypedef *req)
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{
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USBD_StatusTypeDef ret = USBD_OK;
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switch (pdev->dev_state)
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{
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case USBD_STATE_CONFIGURED:
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if (LOBYTE(req->wIndex) <= USBD_MAX_NUM_INTERFACES)
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{
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pdev->pClass->Setup (pdev, req);
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if((req->wLength == 0)&& (ret == USBD_OK))
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{
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USBD_CtlSendStatus(pdev);
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}
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}
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else
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{
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USBD_CtlError(pdev , req);
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}
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break;
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default:
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USBD_CtlError(pdev , req);
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break;
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}
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return USBD_OK;
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}
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/**
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* @brief USBD_StdEPReq
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* Handle standard usb endpoint requests
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* @param pdev: device instance
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* @param req: usb request
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* @retval status
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*/
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USBD_StatusTypeDef USBD_StdEPReq (USBD_HandleTypeDef *pdev , USBD_SetupReqTypedef *req)
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{
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uint8_t ep_addr;
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USBD_StatusTypeDef ret = USBD_OK;
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USBD_EndpointTypeDef *pep;
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ep_addr = LOBYTE(req->wIndex);
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/* Check if it is a class request */
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if ((req->bmRequest & 0x60) == 0x20)
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{
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pdev->pClass->Setup (pdev, req);
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return USBD_OK;
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}
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switch (req->bRequest)
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{
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case USB_REQ_SET_FEATURE :
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switch (pdev->dev_state)
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{
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case USBD_STATE_ADDRESSED:
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if ((ep_addr != 0x00) && (ep_addr != 0x80))
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{
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USBD_LL_StallEP(pdev , ep_addr);
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}
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break;
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case USBD_STATE_CONFIGURED:
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if (req->wValue == USB_FEATURE_EP_HALT)
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{
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if ((ep_addr != 0x00) && (ep_addr != 0x80))
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{
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USBD_LL_StallEP(pdev , ep_addr);
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}
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}
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pdev->pClass->Setup (pdev, req);
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USBD_CtlSendStatus(pdev);
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break;
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default:
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USBD_CtlError(pdev , req);
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break;
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}
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break;
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case USB_REQ_CLEAR_FEATURE :
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switch (pdev->dev_state)
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{
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case USBD_STATE_ADDRESSED:
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if ((ep_addr != 0x00) && (ep_addr != 0x80))
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{
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USBD_LL_StallEP(pdev , ep_addr);
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}
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break;
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case USBD_STATE_CONFIGURED:
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if (req->wValue == USB_FEATURE_EP_HALT)
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{
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if ((ep_addr & 0x7F) != 0x00)
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{
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USBD_LL_ClearStallEP(pdev , ep_addr);
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pdev->pClass->Setup (pdev, req);
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}
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USBD_CtlSendStatus(pdev);
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}
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break;
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default:
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USBD_CtlError(pdev , req);
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break;
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}
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break;
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case USB_REQ_GET_STATUS:
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switch (pdev->dev_state)
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{
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case USBD_STATE_ADDRESSED:
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if ((ep_addr & 0x7F) != 0x00)
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{
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USBD_LL_StallEP(pdev , ep_addr);
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}
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break;
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case USBD_STATE_CONFIGURED:
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pep = ((ep_addr & 0x80) == 0x80) ? &pdev->ep_in[ep_addr & 0x7F]:\
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&pdev->ep_out[ep_addr & 0x7F];
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if(USBD_LL_IsStallEP(pdev, ep_addr))
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{
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pep->status = 0x0001;
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}
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else
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{
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pep->status = 0x0000;
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}
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USBD_CtlSendData (pdev,
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(uint8_t *)&pep->status,
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2);
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break;
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default:
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USBD_CtlError(pdev , req);
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break;
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}
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break;
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default:
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break;
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}
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return ret;
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}
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/**
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* @brief USBD_GetDescriptor
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* Handle Get Descriptor requests
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* @param pdev: device instance
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* @param req: usb request
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* @retval status
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*/
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static void USBD_GetDescriptor(USBD_HandleTypeDef *pdev ,
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USBD_SetupReqTypedef *req)
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{
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uint16_t len;
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uint8_t *pbuf;
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switch (req->wValue >> 8)
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{
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#if (USBD_LPM_ENABLED == 1)
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case USB_DESC_TYPE_BOS:
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pbuf = pdev->pDesc->GetBOSDescriptor(pdev->dev_speed, &len);
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break;
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#endif
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case USB_DESC_TYPE_DEVICE:
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pbuf = pdev->pDesc->GetDeviceDescriptor(pdev->dev_speed, &len);
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break;
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case USB_DESC_TYPE_CONFIGURATION:
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if(pdev->dev_speed == USBD_SPEED_HIGH )
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{
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pbuf = (uint8_t *)pdev->pClass->GetHSConfigDescriptor(&len);
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pbuf[1] = USB_DESC_TYPE_CONFIGURATION;
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}
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else
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{
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pbuf = (uint8_t *)pdev->pClass->GetFSConfigDescriptor(&len);
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pbuf[1] = USB_DESC_TYPE_CONFIGURATION;
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}
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break;
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case USB_DESC_TYPE_STRING:
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switch ((uint8_t)(req->wValue))
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{
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case USBD_IDX_LANGID_STR:
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pbuf = pdev->pDesc->GetLangIDStrDescriptor(pdev->dev_speed, &len);
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break;
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case USBD_IDX_MFC_STR:
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pbuf = pdev->pDesc->GetManufacturerStrDescriptor(pdev->dev_speed, &len);
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break;
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case USBD_IDX_PRODUCT_STR:
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pbuf = pdev->pDesc->GetProductStrDescriptor(pdev->dev_speed, &len);
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break;
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case USBD_IDX_SERIAL_STR:
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pbuf = pdev->pDesc->GetSerialStrDescriptor(pdev->dev_speed, &len);
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break;
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case USBD_IDX_CONFIG_STR:
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pbuf = pdev->pDesc->GetConfigurationStrDescriptor(pdev->dev_speed, &len);
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break;
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case USBD_IDX_INTERFACE_STR:
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pbuf = pdev->pDesc->GetInterfaceStrDescriptor(pdev->dev_speed, &len);
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break;
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default:
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#if (USBD_SUPPORT_USER_STRING == 1)
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pbuf = pdev->pClass->GetUsrStrDescriptor(pdev, (req->wValue) , &len);
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break;
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#else
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USBD_CtlError(pdev , req);
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return;
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#endif
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}
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break;
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case USB_DESC_TYPE_DEVICE_QUALIFIER:
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if(pdev->dev_speed == USBD_SPEED_HIGH )
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{
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pbuf = (uint8_t *)pdev->pClass->GetDeviceQualifierDescriptor(&len);
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break;
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}
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else
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{
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USBD_CtlError(pdev , req);
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return;
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}
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case USB_DESC_TYPE_OTHER_SPEED_CONFIGURATION:
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if(pdev->dev_speed == USBD_SPEED_HIGH )
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{
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pbuf = (uint8_t *)pdev->pClass->GetOtherSpeedConfigDescriptor(&len);
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pbuf[1] = USB_DESC_TYPE_OTHER_SPEED_CONFIGURATION;
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break;
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}
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else
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{
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USBD_CtlError(pdev , req);
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return;
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}
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default:
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USBD_CtlError(pdev , req);
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return;
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}
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if((len != 0)&& (req->wLength != 0))
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{
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len = MIN(len , req->wLength);
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USBD_CtlSendData (pdev,
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pbuf,
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len);
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}
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}
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/**
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* @brief USBD_SetAddress
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* Set device address
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* @param pdev: device instance
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* @param req: usb request
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* @retval status
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*/
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static void USBD_SetAddress(USBD_HandleTypeDef *pdev ,
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USBD_SetupReqTypedef *req)
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{
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uint8_t dev_addr;
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if ((req->wIndex == 0) && (req->wLength == 0))
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{
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dev_addr = (uint8_t)(req->wValue) & 0x7F;
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if (pdev->dev_state == USBD_STATE_CONFIGURED)
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{
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USBD_CtlError(pdev , req);
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}
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else
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{
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pdev->dev_address = dev_addr;
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USBD_LL_SetUSBAddress(pdev, dev_addr);
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USBD_CtlSendStatus(pdev);
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if (dev_addr != 0)
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{
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pdev->dev_state = USBD_STATE_ADDRESSED;
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}
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else
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{
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pdev->dev_state = USBD_STATE_DEFAULT;
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}
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}
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}
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else
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{
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USBD_CtlError(pdev , req);
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}
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}
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/**
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* @brief USBD_SetConfig
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* Handle Set device configuration request
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* @param pdev: device instance
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* @param req: usb request
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* @retval status
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*/
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static void USBD_SetConfig(USBD_HandleTypeDef *pdev ,
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USBD_SetupReqTypedef *req)
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{
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static uint8_t cfgidx;
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cfgidx = (uint8_t)(req->wValue);
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if (cfgidx > USBD_MAX_NUM_CONFIGURATION )
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{
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USBD_CtlError(pdev , req);
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}
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else
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{
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switch (pdev->dev_state)
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{
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case USBD_STATE_ADDRESSED:
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if (cfgidx)
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{
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pdev->dev_config = cfgidx;
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pdev->dev_state = USBD_STATE_CONFIGURED;
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if(USBD_SetClassConfig(pdev , cfgidx) == USBD_FAIL)
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{
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USBD_CtlError(pdev , req);
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return;
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}
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USBD_CtlSendStatus(pdev);
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}
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else
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{
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USBD_CtlSendStatus(pdev);
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}
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break;
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case USBD_STATE_CONFIGURED:
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if (cfgidx == 0)
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{
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pdev->dev_state = USBD_STATE_ADDRESSED;
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pdev->dev_config = cfgidx;
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USBD_ClrClassConfig(pdev , cfgidx);
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USBD_CtlSendStatus(pdev);
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}
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else if (cfgidx != pdev->dev_config)
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{
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/* Clear old configuration */
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USBD_ClrClassConfig(pdev , pdev->dev_config);
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/* set new configuration */
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pdev->dev_config = cfgidx;
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if(USBD_SetClassConfig(pdev , cfgidx) == USBD_FAIL)
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{
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USBD_CtlError(pdev , req);
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return;
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}
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USBD_CtlSendStatus(pdev);
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}
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else
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{
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USBD_CtlSendStatus(pdev);
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}
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break;
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default:
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USBD_CtlError(pdev , req);
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break;
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}
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}
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}
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/**
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* @brief USBD_GetConfig
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* Handle Get device configuration request
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* @param pdev: device instance
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* @param req: usb request
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* @retval status
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*/
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static void USBD_GetConfig(USBD_HandleTypeDef *pdev ,
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USBD_SetupReqTypedef *req)
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{
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if (req->wLength != 1)
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{
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USBD_CtlError(pdev , req);
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}
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else
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{
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switch (pdev->dev_state )
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{
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case USBD_STATE_ADDRESSED:
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pdev->dev_default_config = 0;
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USBD_CtlSendData (pdev,
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(uint8_t *)&pdev->dev_default_config,
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1);
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break;
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case USBD_STATE_CONFIGURED:
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USBD_CtlSendData (pdev,
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(uint8_t *)&pdev->dev_config,
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1);
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break;
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default:
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USBD_CtlError(pdev , req);
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break;
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}
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}
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}
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/**
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* @brief USBD_GetStatus
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* Handle Get Status request
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* @param pdev: device instance
|
|
* @param req: usb request
|
|
* @retval status
|
|
*/
|
|
static void USBD_GetStatus(USBD_HandleTypeDef *pdev ,
|
|
USBD_SetupReqTypedef *req)
|
|
{
|
|
|
|
|
|
switch (pdev->dev_state)
|
|
{
|
|
case USBD_STATE_ADDRESSED:
|
|
case USBD_STATE_CONFIGURED:
|
|
|
|
#if ( USBD_SELF_POWERED == 1)
|
|
pdev->dev_config_status = USB_CONFIG_SELF_POWERED;
|
|
#else
|
|
pdev->dev_config_status = 0;
|
|
#endif
|
|
|
|
if (pdev->dev_remote_wakeup)
|
|
{
|
|
pdev->dev_config_status |= USB_CONFIG_REMOTE_WAKEUP;
|
|
}
|
|
|
|
USBD_CtlSendData (pdev,
|
|
(uint8_t *)& pdev->dev_config_status,
|
|
2);
|
|
break;
|
|
|
|
default :
|
|
USBD_CtlError(pdev , req);
|
|
break;
|
|
}
|
|
}
|
|
|
|
|
|
/**
|
|
* @brief USBD_SetFeature
|
|
* Handle Set device feature request
|
|
* @param pdev: device instance
|
|
* @param req: usb request
|
|
* @retval status
|
|
*/
|
|
static void USBD_SetFeature(USBD_HandleTypeDef *pdev ,
|
|
USBD_SetupReqTypedef *req)
|
|
{
|
|
|
|
if (req->wValue == USB_FEATURE_REMOTE_WAKEUP)
|
|
{
|
|
pdev->dev_remote_wakeup = 1;
|
|
pdev->pClass->Setup (pdev, req);
|
|
USBD_CtlSendStatus(pdev);
|
|
}
|
|
|
|
}
|
|
|
|
|
|
/**
|
|
* @brief USBD_ClrFeature
|
|
* Handle clear device feature request
|
|
* @param pdev: device instance
|
|
* @param req: usb request
|
|
* @retval status
|
|
*/
|
|
static void USBD_ClrFeature(USBD_HandleTypeDef *pdev ,
|
|
USBD_SetupReqTypedef *req)
|
|
{
|
|
switch (pdev->dev_state)
|
|
{
|
|
case USBD_STATE_ADDRESSED:
|
|
case USBD_STATE_CONFIGURED:
|
|
if (req->wValue == USB_FEATURE_REMOTE_WAKEUP)
|
|
{
|
|
pdev->dev_remote_wakeup = 0;
|
|
pdev->pClass->Setup (pdev, req);
|
|
USBD_CtlSendStatus(pdev);
|
|
}
|
|
break;
|
|
|
|
default :
|
|
USBD_CtlError(pdev , req);
|
|
break;
|
|
}
|
|
}
|
|
|
|
/**
|
|
* @brief USBD_ParseSetupRequest
|
|
* Copy buffer into setup structure
|
|
* @param pdev: device instance
|
|
* @param req: usb request
|
|
* @retval None
|
|
*/
|
|
|
|
void USBD_ParseSetupRequest(USBD_SetupReqTypedef *req, uint8_t *pdata)
|
|
{
|
|
req->bmRequest = *(uint8_t *) (pdata);
|
|
req->bRequest = *(uint8_t *) (pdata + 1);
|
|
req->wValue = SWAPBYTE (pdata + 2);
|
|
req->wIndex = SWAPBYTE (pdata + 4);
|
|
req->wLength = SWAPBYTE (pdata + 6);
|
|
|
|
}
|
|
|
|
/**
|
|
* @brief USBD_CtlError
|
|
* Handle USB low level Error
|
|
* @param pdev: device instance
|
|
* @param req: usb request
|
|
* @retval None
|
|
*/
|
|
|
|
void USBD_CtlError( USBD_HandleTypeDef *pdev ,
|
|
USBD_SetupReqTypedef *req)
|
|
{
|
|
USBD_LL_StallEP(pdev , 0x80);
|
|
USBD_LL_StallEP(pdev , 0);
|
|
}
|
|
|
|
|
|
/**
|
|
* @brief USBD_GetString
|
|
* Convert Ascii string into unicode one
|
|
* @param desc : descriptor buffer
|
|
* @param unicode : Formatted string buffer (unicode)
|
|
* @param len : descriptor length
|
|
* @retval None
|
|
*/
|
|
void USBD_GetString(uint8_t *desc, uint8_t *unicode, uint16_t *len)
|
|
{
|
|
uint8_t idx = 0;
|
|
|
|
if (desc != NULL)
|
|
{
|
|
*len = USBD_GetLen(desc) * 2 + 2;
|
|
unicode[idx++] = *len;
|
|
unicode[idx++] = USB_DESC_TYPE_STRING;
|
|
|
|
while (*desc != '\0')
|
|
{
|
|
unicode[idx++] = *desc++;
|
|
unicode[idx++] = 0x00;
|
|
}
|
|
}
|
|
}
|
|
|
|
/**
|
|
* @brief USBD_GetLen
|
|
* return the string length
|
|
* @param buf : pointer to the ascii string buffer
|
|
* @retval string length
|
|
*/
|
|
static uint8_t USBD_GetLen(uint8_t *buf)
|
|
{
|
|
uint8_t len = 0;
|
|
|
|
while (*buf != '\0')
|
|
{
|
|
len++;
|
|
buf++;
|
|
}
|
|
|
|
return len;
|
|
}
|
|
/**
|
|
* @}
|
|
*/
|
|
|
|
|
|
/**
|
|
* @}
|
|
*/
|
|
|
|
|
|
/**
|
|
* @}
|
|
*/
|
|
|
|
/************************ (C) COPYRIGHT STMicroelectronics *****END OF FILE****/
|