700 lines
22 KiB
C
700 lines
22 KiB
C
/*!
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\file usbd_std.c
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\brief USB 2.0 standard handler driver
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*/
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/*
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Copyright (C) 2016 GigaDevice
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2016-08-15, V1.0.0, firmware for GD32F4xx
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*/
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#include "usbd_std.h"
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#include "usb_core.h"
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static usbd_status_enum usbd_standard_request (usb_core_handle_struct *pudev, usb_device_req_struct *req);
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static usbd_status_enum usbd_device_class_request (usb_core_handle_struct *pudev, usb_device_req_struct *req);
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static usbd_status_enum usbd_vendor_request (usb_core_handle_struct *pudev, usb_device_req_struct *req);
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static void usbd_setup_request_parse(usb_core_handle_struct *pudev, usb_device_req_struct *req);
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static void usbd_getdescriptor (usb_core_handle_struct *pudev, usb_device_req_struct *req);
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static void usbd_setaddress (usb_core_handle_struct *pudev, usb_device_req_struct *req);
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static void usbd_setconfig (usb_core_handle_struct *pudev, usb_device_req_struct *req);
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static void usbd_getconfig (usb_core_handle_struct *pudev, usb_device_req_struct *req);
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static void usbd_getstatus (usb_core_handle_struct *pudev, usb_device_req_struct *req);
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static void usbd_setfeature (usb_core_handle_struct *pudev, usb_device_req_struct *req);
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static void usbd_clrfeature (usb_core_handle_struct *pudev, usb_device_req_struct *req);
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static void usbd_reserved (usb_core_handle_struct *pudev, usb_device_req_struct *req);
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static void usbd_setdescriptor (usb_core_handle_struct *pudev, usb_device_req_struct *req);
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static void usbd_getinterface (usb_core_handle_struct *pudev, usb_device_req_struct *req);
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static void usbd_setinterface (usb_core_handle_struct *pudev, usb_device_req_struct *req);
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static void usbd_synchframe (usb_core_handle_struct *pudev, usb_device_req_struct *req);
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static uint8_t* usbd_device_descriptor_get (usb_core_handle_struct *pudev, uint8_t index, uint16_t *pLen);
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static uint8_t* usbd_configuration_descriptor_get (usb_core_handle_struct *pudev, uint8_t index, uint16_t *pLen);
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static uint8_t* usbd_string_descriptor_get (usb_core_handle_struct *pudev, uint8_t index, uint16_t *pLen);
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static void (*StandardDeviceRequest[])(usb_core_handle_struct *pudev, usb_device_req_struct *req) =
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{
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usbd_getstatus,
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usbd_clrfeature,
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usbd_reserved,
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usbd_setfeature,
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usbd_reserved,
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usbd_setaddress,
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usbd_getdescriptor,
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usbd_setdescriptor,
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usbd_getconfig,
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usbd_setconfig,
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usbd_getinterface,
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usbd_setinterface,
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usbd_synchframe,
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};
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/* get standard descriptor handler */
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static uint8_t* (*standard_descriptor_get[])(usb_core_handle_struct *pudev, uint8_t index, uint16_t *pLen) =
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{
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usbd_device_descriptor_get,
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usbd_configuration_descriptor_get,
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usbd_string_descriptor_get
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};
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/*!
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\brief USB setup stage processing
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\param[in] pudev: pointer to USB device instance
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\param[out] none
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\retval USB device operation status
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*/
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usbd_status_enum usbd_setup_transaction(usb_core_handle_struct *pudev)
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{
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usb_device_req_struct req;
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usbd_setup_request_parse(pudev, &req);
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switch (req.bmRequestType & USB_REQ_MASK) {
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/* standard device request */
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case USB_STANDARD_REQ:
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usbd_standard_request(pudev, &req);
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break;
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/* device class request */
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case USB_CLASS_REQ:
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usbd_device_class_request(pudev, &req);
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break;
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/* vendor defined request */
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case USB_VENDOR_REQ:
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usbd_vendor_request(pudev, &req);
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break;
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default:
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usbd_ep_stall(pudev, req.bmRequestType & 0x80U);
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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 data out stage processing
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\param[in] pudev: pointer to USB device instance
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\param[in] ep_id: endpoint identifier(0..7)
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\param[out] none
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\retval USB device operation status
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*/
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usbd_status_enum usbd_out_transaction (usb_core_handle_struct *pudev, uint8_t endp_num)
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{
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usb_ep_struct *ep;
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if (0U == endp_num) {
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ep = &pudev->dev.out_ep[0];
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if (USB_CTRL_DATA_OUT == pudev->dev.ctl_status) {
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if (pudev->dev.remain_len > ep->endp_mps) {
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pudev->dev.remain_len -= ep->endp_mps;
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if (1U == pudev->cfg.dma_enable) {
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/* update buffer location */
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ep->xfer_buff += ep->endp_mps;
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}
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usbd_ep_rx (pudev,
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0U,
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ep->xfer_buff,
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(uint16_t)USB_MIN(pudev->dev.remain_len, ep->endp_mps));
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} else {
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if (USB_STATUS_CONFIGURED == pudev->dev.status) {
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pudev->dev.class_data_handler(pudev, USBD_RX, 0U);
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}
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usbd_ctlstatus_tx(pudev);
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}
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}
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} else if (USB_STATUS_CONFIGURED == pudev->dev.status) {
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pudev->dev.class_data_handler(pudev, USBD_RX, endp_num);
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} else {
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/* no operation */
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}
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return USBD_OK;
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}
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/*!
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\brief data in stage processing
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\param[in] pudev: pointer to USB device instance
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\param[in] ep_id: endpoint identifier(0..7)
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\param[out] none
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\retval USB device operation status
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*/
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usbd_status_enum usbd_in_transaction (usb_core_handle_struct *pudev, uint8_t endp_num)
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{
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usb_ep_struct *ep;
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if (0U == endp_num) {
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ep = &pudev->dev.in_ep[0];
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if (USB_CTRL_DATA_IN == pudev->dev.ctl_status) {
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if (pudev->dev.remain_len > ep->endp_mps) {
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pudev->dev.remain_len -= ep->endp_mps;
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if (1U == pudev->cfg.dma_enable) {
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/* update buffer location */
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ep->xfer_buff += ep->endp_mps;
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}
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usbd_ep_tx (pudev, 0U, ep->xfer_buff, pudev->dev.remain_len);
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} else {
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/* last packet is MPS multiple, so send ZLP packet */
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if ((pudev->dev.sum_len % ep->endp_mps == 0U) &&
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(pudev->dev.sum_len >= ep->endp_mps) &&
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(pudev->dev.sum_len < pudev->dev.ctl_len)) {
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usbd_ep_tx (pudev, 0U, NULL, 0U);
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pudev->dev.ctl_len = 0U;
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} else {
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if (USB_STATUS_CONFIGURED == pudev->dev.status) {
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pudev->dev.class_data_handler(pudev, USBD_TX, 0U);
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}
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usbd_ctlstatus_rx(pudev);
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}
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}
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}
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} else if (USB_STATUS_CONFIGURED == pudev->dev.status) {
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pudev->dev.class_data_handler(pudev, USBD_TX, endp_num);
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} else {
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/* no operation */
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}
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return USBD_OK;
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}
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/*!
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\brief handle USB standard device request
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\param[in] pudev: pointer to USB device instance
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\param[in] req: pointer to USB device request
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\param[out] none
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\retval USB device operation status
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*/
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static usbd_status_enum usbd_standard_request (usb_core_handle_struct *pudev, usb_device_req_struct *req)
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{
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/* call device request handle function */
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(*StandardDeviceRequest[req->bRequest])(pudev, req);
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return USBD_OK;
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}
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/*!
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\brief handle USB device class request
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\param[in] pudev: pointer to USB device instance
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\param[in] req: pointer to USB device class request
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\param[out] none
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\retval USB device operation status
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*/
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static usbd_status_enum usbd_device_class_request (usb_core_handle_struct *pudev, usb_device_req_struct *req)
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{
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usbd_status_enum ret = USBD_OK;
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switch (pudev->dev.status) {
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case USB_STATUS_CONFIGURED:
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if (LOWBYTE(req->wIndex) <= USBD_ITF_MAX_NUM) {
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ret = (usbd_status_enum)(pudev->dev.class_req_handler(pudev, req));
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if ((0U == req->wLength) && (USBD_OK == ret)) {
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/* no data stage */
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usbd_ctlstatus_tx(pudev);
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}
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} else {
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usbd_enum_error(pudev, req);
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}
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break;
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default:
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usbd_enum_error(pudev, 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 handle USB vendor request
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\param[in] pudev: pointer to USB device instance
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\param[in] req: pointer to USB vendor request
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\param[out] none
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\retval USB device operation status
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*/
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static usbd_status_enum usbd_vendor_request (usb_core_handle_struct *pudev, usb_device_req_struct *req)
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{
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/* added by user... */
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return USBD_OK;
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}
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/*!
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\brief no operation, just for reserved
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\param[in] pudev: pointer to USB device instance
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\param[in] req: pointer to USB device request
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\param[out] none
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\retval none
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*/
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static void usbd_reserved (usb_core_handle_struct *pudev, usb_device_req_struct *req)
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{
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/* no operation... */
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}
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/*!
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\brief get the device descriptor
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\brief[in] index: no use
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\param[in] none
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\param[out] pLen: data length pointer
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\retval descriptor buffer pointer
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*/
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static uint8_t* usbd_device_descriptor_get (usb_core_handle_struct *pudev, uint8_t index, uint16_t *pLen)
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{
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*pLen = pudev->dev.dev_desc[0];
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return pudev->dev.dev_desc;
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}
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/*!
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\brief get the configuration descriptor
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\brief[in] index: no use
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\param[in] none
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\param[out] pLen: data length pointer
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\retval descriptor buffer pointer
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*/
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static uint8_t* usbd_configuration_descriptor_get (usb_core_handle_struct *pudev, uint8_t index, uint16_t *pLen)
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{
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*pLen = pudev->dev.config_desc[2];
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return pudev->dev.config_desc;
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}
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/*!
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\brief get string descriptor
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\param[in] index: string descriptor index
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\param[in] pLen: pointer to string length
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\param[out] none
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\retval none
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*/
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static uint8_t* usbd_string_descriptor_get (usb_core_handle_struct *pudev, uint8_t index, uint16_t *pLen)
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{
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uint8_t *desc = pudev->dev.strings[index];
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*pLen = desc[0];
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return desc;
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}
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/*!
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\brief handle Get_Status request
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\param[in] pudev: pointer to USB device instance
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\param[in] req: pointer to USB device request
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\param[out] none
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\retval none
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*/
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static void usbd_getstatus (usb_core_handle_struct *pudev, usb_device_req_struct *req)
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{
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}
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/*!
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\brief handle USB Clear_Feature request
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\param[in] pudev: pointer to USB device instance
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\param[in] req: USB device request
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\param[out] none
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\retval none
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*/
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static void usbd_clrfeature (usb_core_handle_struct *pudev, usb_device_req_struct *req)
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{
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uint8_t ep_addr = 0U;
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switch (req->bmRequestType & USB_REQTYPE_MASK) {
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case USB_REQTYPE_DEVICE:
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switch (pudev->dev.status) {
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case USB_STATUS_ADDRESSED:
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case USB_STATUS_CONFIGURED:
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if (USB_FEATURE_REMOTE_WAKEUP == req->wValue) {
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pudev->dev.remote_wakeup = 0U;
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pudev->dev.class_req_handler(pudev, req);
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usbd_ctlstatus_tx(pudev);
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}
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break;
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default:
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usbd_enum_error(pudev, req);
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break;
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}
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break;
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case USB_REQTYPE_INTERFACE:
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switch (pudev->dev.status) {
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case USB_STATUS_ADDRESSED:
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usbd_enum_error(pudev, req);
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break;
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case USB_STATUS_CONFIGURED:
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if (LOWBYTE(req->wIndex) <= USBD_ITF_MAX_NUM) {
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/* no operation */
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} else {
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usbd_enum_error(pudev, req);
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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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break;
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case USB_REQTYPE_ENDPOINT:
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ep_addr = LOWBYTE(req->wIndex);
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switch (pudev->dev.status) {
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case USB_STATUS_ADDRESSED:
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if (IS_NOT_EP0(ep_addr)) {
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usbd_ep_stall(pudev, ep_addr);
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}
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break;
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case USB_STATUS_CONFIGURED:
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if (USB_FEATURE_ENDP_HALT == req->wValue) {
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if (IS_NOT_EP0(ep_addr)) {
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usbd_ep_clear_stall(pudev, ep_addr);
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pudev->dev.class_req_handler(pudev, req);
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}
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}
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usbd_ctlstatus_tx(pudev);
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break;
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default:
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break;
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}
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break;
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default:
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usbd_enum_error(pudev, req);
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break;
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}
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}
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/*!
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\brief handle USB Set_Feature request
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\param[in] pudev: pointer to USB device instance
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\param[in] req: pointer to USB device request
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\param[out] none
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\retval none
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*/
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static void usbd_setfeature (usb_core_handle_struct *pudev, usb_device_req_struct *req)
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{
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uint8_t ep_addr = 0U;
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__IO uint32_t DctlrStatus;
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switch (req->bmRequestType & USB_REQ_MASK) {
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case USB_REQTYPE_DEVICE:
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switch (pudev->dev.status) {
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case USB_STATUS_ADDRESSED:
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case USB_STATUS_CONFIGURED:
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if (USB_FEATURE_REMOTE_WAKEUP == req->wValue) {
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pudev->dev.remote_wakeup = 1U;
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pudev->dev.class_req_handler(pudev, req);
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usbd_ctlstatus_tx(pudev);
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} else if ((req->wValue == USB_FEATURE_TEST_MODE) &&
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(0U == (req->wIndex & 0xFFU))) {
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DctlrStatus = USB_DCTL;
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usbd_ctlstatus_tx(pudev);
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} else {
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/* no operation */
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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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break;
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case USB_REQTYPE_INTERFACE:
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switch (pudev->dev.status) {
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case USB_STATUS_ADDRESSED:
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usbd_enum_error(pudev, req);
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break;
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case USB_STATUS_CONFIGURED:
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if (LOWBYTE(req->wIndex) <= USBD_ITF_MAX_NUM) {
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/* no operation */
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} else {
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usbd_enum_error(pudev, req);
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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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break;
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case USB_REQTYPE_ENDPOINT:
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switch (pudev->dev.status) {
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case USB_STATUS_ADDRESSED:
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if (IS_NOT_EP0(ep_addr)) {
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usbd_ep_stall(pudev, ep_addr);
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}
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break;
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case USB_STATUS_CONFIGURED:
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if (USB_FEATURE_ENDP_HALT == req->wValue) {
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if (IS_NOT_EP0(ep_addr)) {
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usbd_ep_stall(pudev, ep_addr);
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}
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}
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pudev->dev.class_req_handler(pudev, req);
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usbd_ctlstatus_tx(pudev);
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break;
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default:
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break;
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}
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break;
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default:
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usbd_enum_error(pudev, req);
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break;
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}
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}
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/*!
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\brief handle USB Set_Address request
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\param[in] pudev: pointer to USB device instance
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\param[in] req: pointer to USB device request
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\param[out] none
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\retval none
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*/
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static void usbd_setaddress (usb_core_handle_struct *pudev, usb_device_req_struct *req)
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{
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uint8_t DevAddr;
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if ((0U == req->wIndex) && (0U == req->wLength)) {
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DevAddr = (uint8_t)(req->wValue) & 0x7FU;
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if (USB_STATUS_CONFIGURED == pudev->dev.status) {
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usbd_enum_error(pudev, req);
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} else {
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USB_SET_DEVADDR((uint32_t)DevAddr);
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usbd_ctlstatus_tx(pudev);
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if (0U != DevAddr) {
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pudev->dev.status = USB_STATUS_ADDRESSED;
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} else {
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pudev->dev.status = USB_STATUS_DEFAULT;
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}
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}
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} else {
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usbd_enum_error(pudev, req);
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}
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}
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/*!
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\brief handle USB Get_Descriptor request
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\param[in] pudev: pointer to USB device instance
|
|
\param[in] req: pointer to USB device request
|
|
\param[out] none
|
|
\retval none
|
|
*/
|
|
static void usbd_getdescriptor (usb_core_handle_struct *pudev, usb_device_req_struct *req)
|
|
{
|
|
if (USB_REQTYPE_DEVICE == (req->bmRequestType & USB_REQTYPE_MASK)) {
|
|
uint8_t desc_index = (uint8_t)(req->wValue >> 8U);
|
|
|
|
if (desc_index <= 0x03U) {
|
|
uint16_t len;
|
|
uint8_t *pbuf;
|
|
|
|
/* call corresponding descriptor get function */
|
|
pbuf = standard_descriptor_get[desc_index - 1U](pudev, (uint8_t)(req->wValue) & 0xFFU, &len);
|
|
|
|
if ((0U != len) && (0U != req->wLength)) {
|
|
len = USB_MIN(len, req->wLength);
|
|
|
|
if ((1U == desc_index) && (64U == req->wLength)) {
|
|
len = 8U;
|
|
}
|
|
|
|
usbd_ctltx(pudev, pbuf, len);
|
|
}
|
|
} else {
|
|
usbd_enum_error(pudev, req);
|
|
}
|
|
} else if (USB_REQTYPE_INTERFACE == (req->bmRequestType & USB_REQTYPE_MASK)) {
|
|
pudev->dev.class_req_handler(pudev, req);
|
|
} else {
|
|
/* no operation */
|
|
}
|
|
}
|
|
|
|
/*!
|
|
\brief handle USB Set_Descriptor request
|
|
\param[in] pudev: pointer to USB device instance
|
|
\param[in] req: pointer to USB device request
|
|
\param[out] none
|
|
\retval none
|
|
*/
|
|
static void usbd_setdescriptor (usb_core_handle_struct *pudev, usb_device_req_struct *req)
|
|
{
|
|
/* no handle... */
|
|
}
|
|
|
|
/*!
|
|
\brief handle USB Get_Configuration request
|
|
\param[in] pudev: pointer to USB device instance
|
|
\param[in] req: pointer to USB device request
|
|
\param[out] none
|
|
\retval none
|
|
*/
|
|
static void usbd_getconfig (usb_core_handle_struct *pudev, usb_device_req_struct *req)
|
|
{
|
|
uint32_t USBD_default_config = 0U;
|
|
|
|
if (1U != req->wLength) {
|
|
usbd_enum_error(pudev, req);
|
|
} else {
|
|
switch (pudev->dev.status) {
|
|
case USB_STATUS_ADDRESSED:
|
|
usbd_ctltx(pudev, (uint8_t *)&USBD_default_config, 1U);
|
|
break;
|
|
case USB_STATUS_CONFIGURED:
|
|
usbd_ctltx(pudev, &pudev->dev.config_num, 1U);
|
|
break;
|
|
default:
|
|
usbd_enum_error(pudev, req);
|
|
break;
|
|
}
|
|
}
|
|
}
|
|
|
|
/*!
|
|
\brief handle USB Set_Configuration request
|
|
\param[in] pudev: pointer to USB device instance
|
|
\param[in] req: pointer to USB device request
|
|
\param[out] none
|
|
\retval none
|
|
*/
|
|
static void usbd_setconfig (usb_core_handle_struct *pudev, usb_device_req_struct *req)
|
|
{
|
|
static uint8_t cfgidx;
|
|
|
|
cfgidx = (uint8_t)(req->wValue);
|
|
|
|
if (cfgidx > USBD_CFG_MAX_NUM) {
|
|
usbd_enum_error(pudev, req);
|
|
} else {
|
|
switch (pudev->dev.status) {
|
|
case USB_STATUS_ADDRESSED:
|
|
if (cfgidx) {
|
|
pudev->dev.config_num = cfgidx;
|
|
pudev->dev.status = USB_STATUS_CONFIGURED;
|
|
pudev->dev.class_init(pudev, cfgidx);
|
|
}
|
|
|
|
usbd_ctlstatus_tx(pudev);
|
|
break;
|
|
case USB_STATUS_CONFIGURED:
|
|
if (0U == cfgidx) {
|
|
pudev->dev.status = USB_STATUS_ADDRESSED;
|
|
pudev->dev.config_num = cfgidx;
|
|
pudev->dev.class_deinit(pudev, cfgidx);
|
|
} else if (cfgidx != pudev->dev.config_num) {
|
|
/* clear old configuration */
|
|
pudev->dev.class_deinit(pudev, pudev->dev.config_num);
|
|
|
|
/* set new configuration */
|
|
pudev->dev.config_num = cfgidx;
|
|
pudev->dev.class_init(pudev, cfgidx);
|
|
} else {
|
|
/* no operation */
|
|
}
|
|
|
|
usbd_ctlstatus_tx(pudev);
|
|
break;
|
|
default:
|
|
usbd_enum_error(pudev, req);
|
|
break;
|
|
}
|
|
}
|
|
}
|
|
|
|
/*!
|
|
\brief handle USB Get_Interface request
|
|
\param[in] pudev: pointer to USB device instance
|
|
\param[in] req: pointer to USB device request
|
|
\param[out] none
|
|
\retval none
|
|
*/
|
|
static void usbd_getinterface (usb_core_handle_struct *pudev, usb_device_req_struct *req)
|
|
{
|
|
pudev->dev.class_req_handler(pudev, req);
|
|
}
|
|
|
|
/*!
|
|
\brief handle USB Set_Interface request
|
|
\param[in] pudev: pointer to USB device instance
|
|
\param[in] req: pointer to USB device request
|
|
\param[out] none
|
|
\retval none
|
|
*/
|
|
static void usbd_setinterface (usb_core_handle_struct *pudev, usb_device_req_struct *req)
|
|
{
|
|
pudev->dev.class_req_handler(pudev, req);
|
|
}
|
|
|
|
/*!
|
|
\brief handle USB SynchFrame request
|
|
\param[in] pudev: pointer to USB device instance
|
|
\param[in] req: pointer to USB device request
|
|
\param[out] none
|
|
\retval none
|
|
*/
|
|
static void usbd_synchframe (usb_core_handle_struct *pudev, usb_device_req_struct *req)
|
|
{
|
|
/* no handle... */
|
|
}
|
|
|
|
/*!
|
|
\brief decode setup data packet
|
|
\param[in] pudev: pointer to USB device instance
|
|
\param[in] req: pointer to USB device request
|
|
\param[out] none
|
|
\retval none
|
|
*/
|
|
static void usbd_setup_request_parse(usb_core_handle_struct *pudev, usb_device_req_struct *req)
|
|
{
|
|
uint8_t *psetup = pudev->dev.setup_packet;
|
|
|
|
req->bmRequestType = *psetup;
|
|
req->bRequest = *(uint8_t *)(psetup + 1U);
|
|
req->wValue = SWAPBYTE (psetup + 2U);
|
|
req->wIndex = SWAPBYTE (psetup + 4U);
|
|
req->wLength = SWAPBYTE (psetup + 6U);
|
|
|
|
pudev->dev.ctl_len = req->wLength;
|
|
}
|
|
|
|
/*!
|
|
\brief handle USB low level error event
|
|
\param[in] pudev: pointer to USB device instance
|
|
\param[in] req: pointer to USB device request
|
|
\param[out] none
|
|
\retval none
|
|
*/
|
|
void usbd_enum_error(usb_core_handle_struct *pudev, usb_device_req_struct *req)
|
|
{
|
|
usbd_ep_stall(pudev, 0x80U);
|
|
usbd_ep_stall(pudev, 0x00U);
|
|
usb_ep0_startout(pudev);
|
|
}
|