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- /*
- * Copyright (c) 2022, sakumisu
- *
- * SPDX-License-Identifier: Apache-2.0
- */
- #include "usbd_core.h"
- #include "usb_ch32_usbfs_reg.h"
- #ifdef CONFIG_USB_HS
- #error "usb fs do not support hs"
- #endif
- #ifndef USBD_IRQHandler
- #define USBD_IRQHandler OTG_FS_IRQHandler //use actual usb irq name instead
- #endif
- #ifndef USB_NUM_BIDIR_ENDPOINTS
- #define USB_NUM_BIDIR_ENDPOINTS 8
- #endif
- #define USB_SET_DMA(ep_idx, addr) (*(volatile uint32_t *)((uint32_t)(&USBFS_DEVICE->UEP0_DMA) + 4 * ep_idx) = addr)
- #define USB_SET_TX_LEN(ep_idx, len) (*(volatile uint16_t *)((uint32_t)(&USBFS_DEVICE->UEP0_TX_LEN) + 4 * ep_idx) = len)
- #define USB_GET_TX_LEN(ep_idx) (*(volatile uint16_t *)((uint32_t)(&USBFS_DEVICE->UEP0_TX_LEN) + 4 * ep_idx))
- #define USB_SET_TX_CTRL(ep_idx, val) (*(volatile uint8_t *)((uint32_t)(&USBFS_DEVICE->UEP0_TX_CTRL) + 4 * ep_idx) = val)
- #define USB_GET_TX_CTRL(ep_idx) (*(volatile uint8_t *)((uint32_t)(&USBFS_DEVICE->UEP0_TX_CTRL) + 4 * ep_idx))
- #define USB_SET_RX_CTRL(ep_idx, val) (*(volatile uint8_t *)((uint32_t)(&USBFS_DEVICE->UEP0_RX_CTRL) + 4 * ep_idx) = val)
- #define USB_GET_RX_CTRL(ep_idx) (*(volatile uint8_t *)((uint32_t)(&USBFS_DEVICE->UEP0_RX_CTRL) + 4 * ep_idx))
- /* Endpoint state */
- struct ch32_usbfs_ep_state {
- uint16_t ep_mps; /* Endpoint max packet size */
- uint8_t ep_type; /* Endpoint type */
- uint8_t ep_stalled; /* Endpoint stall flag */
- uint8_t ep_enable; /* Endpoint enable */
- uint8_t *xfer_buf;
- uint32_t xfer_len;
- uint32_t actual_xfer_len;
- };
- /* Driver state */
- struct ch32_usbfs_udc {
- __attribute__((aligned(4))) struct usb_setup_packet setup;
- volatile uint8_t dev_addr;
- struct ch32_usbfs_ep_state in_ep[USB_NUM_BIDIR_ENDPOINTS]; /*!< IN endpoint parameters*/
- struct ch32_usbfs_ep_state out_ep[USB_NUM_BIDIR_ENDPOINTS]; /*!< OUT endpoint parameters */
- __attribute__((aligned(4))) uint8_t ep_databuf[USB_NUM_BIDIR_ENDPOINTS - 1][64 + 64]; //epx_out(64)+epx_in(64)
- } g_ch32_usbfs_udc;
- volatile bool ep0_rx_data_toggle;
- volatile bool ep0_tx_data_toggle;
- void USBD_IRQHandler(void) __attribute__((interrupt("WCH-Interrupt-fast")));
- __WEAK void usb_dc_low_level_init(void)
- {
- }
- __WEAK void usb_dc_low_level_deinit(void)
- {
- }
- int usb_dc_init(uint8_t busid)
- {
- usb_dc_low_level_init();
- USBFS_DEVICE->BASE_CTRL = 0x00;
- USBFS_DEVICE->UEP4_1_MOD = USBFS_UEP4_RX_EN | USBFS_UEP4_TX_EN | USBFS_UEP1_RX_EN | USBFS_UEP1_TX_EN;
- USBFS_DEVICE->UEP2_3_MOD = USBFS_UEP2_RX_EN | USBFS_UEP2_TX_EN | USBFS_UEP3_RX_EN | USBFS_UEP3_TX_EN;
- USBFS_DEVICE->UEP5_6_MOD = USBFS_UEP5_RX_EN | USBFS_UEP5_TX_EN | USBFS_UEP6_RX_EN | USBFS_UEP6_TX_EN;
- USBFS_DEVICE->UEP7_MOD = USBFS_UEP7_RX_EN | USBFS_UEP7_TX_EN;
- USBFS_DEVICE->UEP1_DMA = (uint32_t)g_ch32_usbfs_udc.ep_databuf[0];
- USBFS_DEVICE->UEP2_DMA = (uint32_t)g_ch32_usbfs_udc.ep_databuf[1];
- USBFS_DEVICE->UEP3_DMA = (uint32_t)g_ch32_usbfs_udc.ep_databuf[2];
- USBFS_DEVICE->UEP4_DMA = (uint32_t)g_ch32_usbfs_udc.ep_databuf[3];
- USBFS_DEVICE->UEP5_DMA = (uint32_t)g_ch32_usbfs_udc.ep_databuf[4];
- USBFS_DEVICE->UEP6_DMA = (uint32_t)g_ch32_usbfs_udc.ep_databuf[5];
- USBFS_DEVICE->UEP7_DMA = (uint32_t)g_ch32_usbfs_udc.ep_databuf[6];
- USBFS_DEVICE->INT_FG = 0xFF;
- USBFS_DEVICE->INT_EN = USBFS_UIE_SUSPEND | USBFS_UIE_BUS_RST | USBFS_UIE_TRANSFER;
- USBFS_DEVICE->DEV_ADDR = 0x00;
- USBFS_DEVICE->BASE_CTRL = USBFS_UC_DEV_PU_EN | USBFS_UC_INT_BUSY | USBFS_UC_DMA_EN;
- USBFS_DEVICE->UDEV_CTRL = USBFS_UD_PD_DIS | USBFS_UD_PORT_EN;
- return 0;
- }
- int usb_dc_deinit(uint8_t busid)
- {
- return 0;
- }
- int usbd_set_address(uint8_t busid, const uint8_t addr)
- {
- if (addr == 0) {
- USBFS_DEVICE->DEV_ADDR = (USBFS_DEVICE->DEV_ADDR & USBFS_UDA_GP_BIT) | 0;
- }
- g_ch32_usbfs_udc.dev_addr = addr;
- return 0;
- }
- int usbd_set_remote_wakeup(uint8_t busid)
- {
- return -1;
- }
- uint8_t usbd_get_port_speed(uint8_t busid)
- {
- return USB_SPEED_FULL;
- }
- int usbd_ep_open(uint8_t busid, const struct usb_endpoint_descriptor *ep)
- {
- uint8_t ep_idx = USB_EP_GET_IDX(ep->bEndpointAddress);
- if (USB_EP_DIR_IS_OUT(ep->bEndpointAddress)) {
- g_ch32_usbfs_udc.out_ep[ep_idx].ep_mps = USB_GET_MAXPACKETSIZE(ep->wMaxPacketSize);
- g_ch32_usbfs_udc.out_ep[ep_idx].ep_type = USB_GET_ENDPOINT_TYPE(ep->bmAttributes);
- g_ch32_usbfs_udc.out_ep[ep_idx].ep_enable = true;
- USB_SET_RX_CTRL(ep_idx, USBFS_UEP_R_RES_NAK | USBFS_UEP_AUTO_TOG);
- } else {
- g_ch32_usbfs_udc.in_ep[ep_idx].ep_mps = USB_GET_MAXPACKETSIZE(ep->wMaxPacketSize);
- g_ch32_usbfs_udc.in_ep[ep_idx].ep_type = USB_GET_ENDPOINT_TYPE(ep->bmAttributes);
- g_ch32_usbfs_udc.in_ep[ep_idx].ep_enable = true;
- USB_SET_TX_CTRL(ep_idx, USBFS_UEP_T_RES_NAK | USBFS_UEP_AUTO_TOG);
- }
- return 0;
- }
- int usbd_ep_close(uint8_t busid, const uint8_t ep)
- {
- return 0;
- }
- int usbd_ep_set_stall(uint8_t busid, const uint8_t ep)
- {
- uint8_t ep_idx = USB_EP_GET_IDX(ep);
- if (USB_EP_DIR_IS_OUT(ep)) {
- if (ep_idx == 0) {
- USBFS_DEVICE->UEP0_RX_CTRL = USBFS_UEP_R_TOG | USBFS_UEP_R_RES_STALL;
- } else {
- USB_SET_RX_CTRL(ep_idx, (USB_GET_RX_CTRL(ep_idx) & ~USBFS_UEP_R_RES_MASK) | USBFS_UEP_R_RES_STALL);
- }
- } else {
- if (ep_idx == 0) {
- USBFS_DEVICE->UEP0_TX_CTRL = USBFS_UEP_T_TOG | USBFS_UEP_T_RES_STALL;
- } else {
- USB_SET_TX_CTRL(ep_idx, (USB_GET_TX_CTRL(ep_idx) & ~USBFS_UEP_T_RES_MASK) | USBFS_UEP_T_RES_STALL);
- }
- }
- if (ep_idx == 0) {
- USB_SET_DMA(ep_idx, (uint32_t)&g_ch32_usbfs_udc.setup);
- USB_SET_RX_CTRL(ep_idx, USBFS_UEP_R_RES_ACK);
- }
- return 0;
- }
- int usbd_ep_clear_stall(uint8_t busid, const uint8_t ep)
- {
- uint8_t ep_idx = USB_EP_GET_IDX(ep);
- if (ep_idx == 0) {
- return 0;
- }
- if (USB_EP_DIR_IS_OUT(ep)) {
- USB_SET_RX_CTRL(ep_idx, (USB_GET_RX_CTRL(ep_idx) & ~(USBFS_UEP_R_TOG | USBFS_UEP_R_RES_MASK)) | USBFS_UEP_R_RES_ACK);
- } else {
- USB_SET_TX_CTRL(ep_idx, (USB_GET_TX_CTRL(ep_idx) & ~(USBFS_UEP_T_TOG | USBFS_UEP_T_RES_MASK)) | USBFS_UEP_T_RES_NAK);
- }
- return 0;
- }
- int usbd_ep_is_stalled(uint8_t busid, const uint8_t ep, uint8_t *stalled)
- {
- return 0;
- }
- int usbd_ep_start_write(uint8_t busid, const uint8_t ep, const uint8_t *data, uint32_t data_len)
- {
- uint8_t ep_idx = USB_EP_GET_IDX(ep);
- if (!data && data_len) {
- return -1;
- }
- if (!g_ch32_usbfs_udc.in_ep[ep_idx].ep_enable) {
- return -2;
- }
- if ((uint32_t)data & 0x03) {
- printf("data do not align4\r\n");
- return -3;
- }
- g_ch32_usbfs_udc.in_ep[ep_idx].xfer_buf = (uint8_t *)data;
- g_ch32_usbfs_udc.in_ep[ep_idx].xfer_len = data_len;
- g_ch32_usbfs_udc.in_ep[ep_idx].actual_xfer_len = 0;
- if (ep_idx == 0) {
- if (data_len == 0) {
- USB_SET_TX_LEN(ep_idx, 0);
- } else {
- data_len = MIN(data_len, g_ch32_usbfs_udc.in_ep[ep_idx].ep_mps);
- USB_SET_TX_LEN(ep_idx, data_len);
- USB_SET_DMA(ep_idx, (uint32_t)data);
- }
- if (ep0_tx_data_toggle) {
- USB_SET_TX_CTRL(ep_idx, USBFS_UEP_T_TOG | USBFS_UEP_T_RES_ACK);
- } else {
- USB_SET_TX_CTRL(ep_idx, USBFS_UEP_T_RES_ACK);
- }
- } else {
- if (data_len == 0) {
- USB_SET_TX_LEN(ep_idx, 0);
- } else {
- data_len = MIN(data_len, g_ch32_usbfs_udc.in_ep[ep_idx].ep_mps);
- USB_SET_TX_LEN(ep_idx, data_len);
- memcpy(&g_ch32_usbfs_udc.ep_databuf[ep_idx - 1][64], data, data_len);
- }
- USB_SET_TX_CTRL(ep_idx, (USB_GET_TX_CTRL(ep_idx) & ~USBFS_UEP_T_RES_MASK) | USBFS_UEP_T_RES_ACK);
- }
- return 0;
- }
- int usbd_ep_start_read(uint8_t busid, const uint8_t ep, uint8_t *data, uint32_t data_len)
- {
- uint8_t ep_idx = USB_EP_GET_IDX(ep);
- if (!data && data_len) {
- return -1;
- }
- if (!g_ch32_usbfs_udc.out_ep[ep_idx].ep_enable) {
- return -2;
- }
- if ((uint32_t)data & 0x03) {
- printf("data do not align4\r\n");
- return -3;
- }
- g_ch32_usbfs_udc.out_ep[ep_idx].xfer_buf = (uint8_t *)data;
- g_ch32_usbfs_udc.out_ep[ep_idx].xfer_len = data_len;
- g_ch32_usbfs_udc.out_ep[ep_idx].actual_xfer_len = 0;
- if (ep_idx == 0) {
- if (data_len == 0) {
- } else {
- USB_SET_DMA(ep_idx, (uint32_t)data);
- }
- if (ep0_rx_data_toggle) {
- USB_SET_RX_CTRL(ep_idx, USBFS_UEP_R_TOG | USBFS_UEP_R_RES_ACK);
- } else {
- USB_SET_RX_CTRL(ep_idx, USBFS_UEP_R_RES_ACK);
- }
- return 0;
- } else {
- USB_SET_RX_CTRL(ep_idx, (USB_GET_RX_CTRL(ep_idx) & ~USBFS_UEP_R_RES_MASK) | USBFS_UEP_R_RES_ACK);
- }
- return 0;
- }
- void USBD_IRQHandler(void)
- {
- uint32_t ep_idx = 0, token, write_count, read_count;
- uint8_t intflag = 0;
- intflag = USBFS_DEVICE->INT_FG;
- if (intflag & USBFS_UIF_TRANSFER) {
- token = USBFS_DEVICE->INT_ST & USBFS_UIS_TOKEN_MASK;
- ep_idx = USBFS_DEVICE->INT_ST & USBFS_UIS_ENDP_MASK;
- switch (token) {
- case USBFS_UIS_TOKEN_SETUP:
- USB_SET_RX_CTRL(ep_idx, USBFS_UEP_R_RES_NAK);
- usbd_event_ep0_setup_complete_handler(0, (uint8_t *)&g_ch32_usbfs_udc.setup);
- break;
- case USBFS_UIS_TOKEN_IN:
- if (ep_idx == 0x00) {
- if (g_ch32_usbfs_udc.in_ep[ep_idx].xfer_len >= g_ch32_usbfs_udc.in_ep[ep_idx].ep_mps) {
- g_ch32_usbfs_udc.in_ep[ep_idx].xfer_len -= g_ch32_usbfs_udc.in_ep[ep_idx].ep_mps;
- g_ch32_usbfs_udc.in_ep[ep_idx].actual_xfer_len += g_ch32_usbfs_udc.in_ep[ep_idx].ep_mps;
- ep0_tx_data_toggle ^= 1;
- } else {
- g_ch32_usbfs_udc.in_ep[ep_idx].actual_xfer_len += g_ch32_usbfs_udc.in_ep[ep_idx].xfer_len;
- g_ch32_usbfs_udc.in_ep[ep_idx].xfer_len = 0;
- ep0_tx_data_toggle = true;
- }
- usbd_event_ep_in_complete_handler(0, ep_idx | 0x80, g_ch32_usbfs_udc.in_ep[ep_idx].actual_xfer_len);
- if (g_ch32_usbfs_udc.dev_addr > 0) {
- USBFS_DEVICE->DEV_ADDR = (USBFS_DEVICE->DEV_ADDR & USBFS_UDA_GP_BIT) | g_ch32_usbfs_udc.dev_addr;
- g_ch32_usbfs_udc.dev_addr = 0;
- }
- if (g_ch32_usbfs_udc.setup.wLength && ((g_ch32_usbfs_udc.setup.bmRequestType & USB_REQUEST_DIR_MASK) == USB_REQUEST_DIR_OUT)) {
- /* In status, start reading setup */
- USB_SET_DMA(ep_idx, (uint32_t)&g_ch32_usbfs_udc.setup);
- USB_SET_RX_CTRL(ep_idx, USBFS_UEP_R_RES_ACK);
- ep0_tx_data_toggle = true;
- } else if (g_ch32_usbfs_udc.setup.wLength == 0) {
- /* In status, start reading setup */
- USB_SET_DMA(ep_idx, (uint32_t)&g_ch32_usbfs_udc.setup);
- USB_SET_RX_CTRL(ep_idx, USBFS_UEP_R_RES_ACK);
- ep0_tx_data_toggle = true;
- }
- } else {
- USB_SET_TX_CTRL(ep_idx, (USB_GET_TX_CTRL(ep_idx) & ~USBFS_UEP_T_RES_MASK) | USBFS_UEP_T_RES_NAK);
- if (g_ch32_usbfs_udc.in_ep[ep_idx].xfer_len > g_ch32_usbfs_udc.in_ep[ep_idx].ep_mps) {
- g_ch32_usbfs_udc.in_ep[ep_idx].xfer_buf += g_ch32_usbfs_udc.in_ep[ep_idx].ep_mps;
- g_ch32_usbfs_udc.in_ep[ep_idx].xfer_len -= g_ch32_usbfs_udc.in_ep[ep_idx].ep_mps;
- g_ch32_usbfs_udc.in_ep[ep_idx].actual_xfer_len += g_ch32_usbfs_udc.in_ep[ep_idx].ep_mps;
- write_count = MIN(g_ch32_usbfs_udc.in_ep[ep_idx].xfer_len, g_ch32_usbfs_udc.in_ep[ep_idx].ep_mps);
- USB_SET_TX_LEN(ep_idx, write_count);
- memcpy(&g_ch32_usbfs_udc.ep_databuf[ep_idx - 1][64], g_ch32_usbfs_udc.in_ep[ep_idx].xfer_buf, write_count);
- USB_SET_TX_CTRL(ep_idx, (USB_GET_TX_CTRL(ep_idx) & ~USBFS_UEP_T_RES_MASK) | USBFS_UEP_T_RES_ACK);
- } else {
- g_ch32_usbfs_udc.in_ep[ep_idx].actual_xfer_len += g_ch32_usbfs_udc.in_ep[ep_idx].xfer_len;
- g_ch32_usbfs_udc.in_ep[ep_idx].xfer_len = 0;
- usbd_event_ep_in_complete_handler(0, ep_idx | 0x80, g_ch32_usbfs_udc.in_ep[ep_idx].actual_xfer_len);
- }
- }
- break;
- case USBFS_UIS_TOKEN_OUT:
- if (ep_idx == 0x00) {
- USB_SET_RX_CTRL(ep_idx, USBFS_UEP_R_RES_NAK);
- read_count = USBFS_DEVICE->RX_LEN;
- g_ch32_usbfs_udc.out_ep[ep_idx].actual_xfer_len += read_count;
- g_ch32_usbfs_udc.out_ep[ep_idx].xfer_len -= read_count;
- usbd_event_ep_out_complete_handler(0, 0x00, g_ch32_usbfs_udc.out_ep[ep_idx].actual_xfer_len);
- if (read_count == 0) {
- /* Out status, start reading setup */
- USB_SET_DMA(ep_idx, (uint32_t)&g_ch32_usbfs_udc.setup);
- USB_SET_RX_CTRL(ep_idx, USBFS_UEP_R_RES_ACK);
- ep0_rx_data_toggle = true;
- ep0_tx_data_toggle = true;
- } else {
- ep0_rx_data_toggle ^= 1;
- }
- } else {
- if (USBFS_DEVICE->INT_ST & USBFS_UIS_TOG_OK) {
- USB_SET_RX_CTRL(ep_idx, (USB_GET_RX_CTRL(ep_idx) & ~USBFS_UEP_R_RES_MASK) | USBFS_UEP_R_RES_NAK);
- read_count = USBFS_DEVICE->RX_LEN;
- memcpy(g_ch32_usbfs_udc.out_ep[ep_idx].xfer_buf, &g_ch32_usbfs_udc.ep_databuf[ep_idx - 1][0], read_count);
- g_ch32_usbfs_udc.out_ep[ep_idx].xfer_buf += read_count;
- g_ch32_usbfs_udc.out_ep[ep_idx].actual_xfer_len += read_count;
- g_ch32_usbfs_udc.out_ep[ep_idx].xfer_len -= read_count;
- if ((read_count < g_ch32_usbfs_udc.out_ep[ep_idx].ep_mps) || (g_ch32_usbfs_udc.out_ep[ep_idx].xfer_len == 0)) {
- usbd_event_ep_out_complete_handler(0, ep_idx, g_ch32_usbfs_udc.out_ep[ep_idx].actual_xfer_len);
- } else {
- USB_SET_RX_CTRL(ep_idx, (USB_GET_RX_CTRL(ep_idx) & ~USBFS_UEP_R_RES_MASK) | USBFS_UEP_R_RES_ACK);
- }
- }
- }
- break;
- case USBFS_UIS_TOKEN_SOF:
- break;
- default:
- break;
- }
- USBFS_DEVICE->INT_FG = USBFS_UIF_TRANSFER;
- } else if (intflag & USBFS_UIF_BUS_RST) {
- USBFS_DEVICE->UEP0_TX_LEN = 0;
- USBFS_DEVICE->UEP0_TX_CTRL = USBFS_UEP_T_RES_NAK;
- USBFS_DEVICE->UEP0_RX_CTRL = USBFS_UEP_R_RES_NAK;
- for (uint8_t ep_idx = 1; ep_idx < USB_NUM_BIDIR_ENDPOINTS; ep_idx++) {
- USB_SET_TX_LEN(ep_idx, 0);
- USB_SET_TX_CTRL(ep_idx, USBFS_UEP_T_RES_NAK | USBFS_UEP_AUTO_TOG);
- USB_SET_RX_CTRL(ep_idx, USBFS_UEP_R_RES_NAK | USBFS_UEP_AUTO_TOG);
- }
- ep0_tx_data_toggle = true;
- ep0_rx_data_toggle = true;
- memset(&g_ch32_usbfs_udc, 0, sizeof(struct ch32_usbfs_udc));
- usbd_event_reset_handler(0);
- USB_SET_DMA(ep_idx, (uint32_t)&g_ch32_usbfs_udc.setup);
- USB_SET_RX_CTRL(ep_idx, USBFS_UEP_R_RES_ACK);
- USBFS_DEVICE->INT_FG |= USBFS_UIF_BUS_RST;
- } else if (intflag & USBFS_UIF_SUSPEND) {
- if (USBFS_DEVICE->MIS_ST & USBFS_UMS_SUSPEND) {
- } else {
- }
- USBFS_DEVICE->INT_FG = USBFS_UIF_SUSPEND;
- } else {
- USBFS_DEVICE->INT_FG = intflag;
- }
- }
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