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c3cc33281fee64fd4c181aa86c5f738832bee5b8
CherryUSB/port/ch32/usb_dc_usbfs.c
sakumisu c3cc33281f optimise usbfs and usbhs driver
2022-07-03 10:29:58 +08:00

320 lines
10 KiB
C
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#include "usbd_core.h"
#include "usb_ch32_usbfs_reg.h"
#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_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 {
/** Endpoint max packet size */
uint16_t ep_mps;
/** Endpoint Transfer Type.
* May be Bulk, Interrupt, Control or Isochronous
*/
uint8_t ep_type;
uint8_t ep_stalled; /** Endpoint stall flag */
};
/* Driver state */
struct ch32_usbfs_udc {
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;
/* Endpoint0 Buffer */
__attribute__((aligned(4))) uint8_t EP0_DatabufHD[64]; //ep0(64)
void USBD_IRQHandler(void) __attribute__((interrupt("WCH-Interrupt-fast")));
volatile uint8_t mps_over_flag = 0;
__WEAK void usb_dc_low_level_init(void)
{
}
__WEAK void usb_dc_low_level_deinit(void)
{
}
int usb_dc_init(void)
{
memset(&g_ch32_usbfs_udc, 0, sizeof(struct ch32_usbfs_udc));
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->UEP0_DMA = (uint32_t)EP0_DatabufHD;
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(void)
{
return 0;
}
int usbd_set_address(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_ep_open(const struct usbd_endpoint_cfg *ep_cfg)
{
uint8_t ep_idx = USB_EP_GET_IDX(ep_cfg->ep_addr);
if (USB_EP_DIR_IS_OUT(ep_cfg->ep_addr)) {
g_ch32_usbfs_udc.out_ep[ep_idx].ep_mps = ep_cfg->ep_mps;
g_ch32_usbfs_udc.out_ep[ep_idx].ep_type = ep_cfg->ep_type;
} else {
g_ch32_usbfs_udc.in_ep[ep_idx].ep_mps = ep_cfg->ep_mps;
g_ch32_usbfs_udc.in_ep[ep_idx].ep_type = ep_cfg->ep_type;
}
return 0;
}
int usbd_ep_close(const uint8_t ep)
{
return 0;
}
int usbd_ep_set_stall(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);
}
}
return 0;
}
int usbd_ep_clear_stall(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(const uint8_t ep, uint8_t *stalled)
{
return 0;
}
int usbd_ep_write(const uint8_t ep, const uint8_t *data, uint32_t data_len, uint32_t *ret_bytes)
{
uint8_t ep_idx = USB_EP_GET_IDX(ep);
if (!data && data_len) {
return -1;
}
while (((USB_GET_TX_CTRL(ep_idx) & USBFS_UEP_T_RES_MASK) == USBFS_UEP_T_RES_ACK) && (ep_idx != 0)) {
}
if (!data_len) {
if (ep_idx == 0) {
USB_SET_TX_LEN(ep_idx, 0);
} else {
USB_SET_TX_LEN(ep_idx, 0);
USB_SET_TX_CTRL(ep_idx, (USB_GET_TX_CTRL(ep_idx) & ~USBFS_UEP_T_RES_MASK) | USBFS_UEP_T_RES_ACK);
}
return 0;
}
if (data_len > g_ch32_usbfs_udc.in_ep[ep_idx].ep_mps) {
data_len = g_ch32_usbfs_udc.in_ep[ep_idx].ep_mps;
if (ep_idx == 0) {
mps_over_flag = 1;
}
}
if (ep_idx == 0) {
memcpy(&EP0_DatabufHD[0], data, data_len);
USB_SET_TX_LEN(ep_idx, data_len);
} else {
memcpy(&g_ch32_usbfs_udc.ep_databuf[ep_idx - 1][64], data, data_len);
USB_SET_TX_LEN(ep_idx, data_len);
USB_SET_TX_CTRL(ep_idx, (USB_GET_TX_CTRL(ep_idx) & ~USBFS_UEP_T_RES_MASK) | USBFS_UEP_T_RES_ACK);
}
if (ret_bytes) {
*ret_bytes = data_len;
}
return 0;
}
int usbd_ep_read(const uint8_t ep, uint8_t *data, uint32_t max_data_len, uint32_t *read_bytes)
{
uint8_t ep_idx = USB_EP_GET_IDX(ep);
uint32_t read_count;
if (!data && max_data_len) {
return -1;
}
if (!max_data_len) {
if (ep_idx) {
USB_SET_RX_CTRL(ep_idx, (USB_GET_RX_CTRL(ep_idx) & ~USBFS_UEP_R_RES_MASK) | USBFS_UEP_R_RES_ACK);
}
return 0;
}
read_count = USBFS_DEVICE->RX_LEN;
read_count = MIN(read_count, max_data_len);
if (ep_idx == 0x00) {
if ((max_data_len == 8) && !read_bytes) {
read_count = 8;
memcpy(data, &EP0_DatabufHD[0], 8);
} else {
memcpy(data, &EP0_DatabufHD[0], read_count);
}
} else {
memcpy(data, &g_ch32_usbfs_udc.ep_databuf[ep_idx - 1][0], read_count);
}
if (read_bytes) {
*read_bytes = read_count;
}
return 0;
}
void USBD_IRQHandler(void)
{
uint32_t ep_idx, token;
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:
USBFS_DEVICE->UEP0_TX_CTRL = USBFS_UEP_T_TOG | USBFS_UEP_T_RES_NAK;
usbd_event_notify_handler(USBD_EVENT_SETUP_NOTIFY, NULL);
USBFS_DEVICE->UEP0_TX_CTRL = USBFS_UEP_T_TOG | USBFS_UEP_T_RES_ACK;
USBFS_DEVICE->UEP0_RX_CTRL = USBFS_UEP_R_TOG | USBFS_UEP_R_RES_ACK;
break;
case USBFS_UIS_TOKEN_IN:
if (ep_idx == 0x00) {
usbd_event_notify_handler(USBD_EVENT_EP0_IN_NOTIFY, NULL);
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 (mps_over_flag) {
mps_over_flag = 0;
USBFS_DEVICE->UEP0_TX_CTRL ^= USBFS_UEP_T_TOG;
} else {
USBFS_DEVICE->UEP0_TX_CTRL = USBFS_UEP_T_RES_NAK;
USBFS_DEVICE->UEP0_RX_CTRL = USBFS_UEP_R_RES_ACK;
}
} else {
USB_SET_TX_CTRL(ep_idx, (USB_GET_TX_CTRL(ep_idx) & ~USBFS_UEP_T_RES_MASK) | USBFS_UEP_T_RES_NAK);
usbd_event_notify_handler(USBD_EVENT_EP_IN_NOTIFY, (void *)(ep_idx | 0x80));
}
break;
case USBFS_UIS_TOKEN_OUT:
if (ep_idx == 0x00) {
usbd_event_notify_handler(USBD_EVENT_EP0_OUT_NOTIFY, NULL);
} 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);
usbd_event_notify_handler(USBD_EVENT_EP_OUT_NOTIFY, (void *)(ep_idx));
}
}
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_ACK;
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_ACK | USBFS_UEP_AUTO_TOG);
}
usbd_event_notify_handler(USBD_EVENT_RESET, NULL);
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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