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refactor dcd_ep_ctr_handler

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This commit is contained in:
hathach
2024-07-31 17:10:43 +07:00
parent ee831d27ac
commit ce0fdc5609
2 changed files with 17 additions and 22 deletions
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37
src/portable/st/stm32_fsdev/dcd_stm32_fsdev.c
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@@ -166,7 +166,6 @@ static uint8_t remoteWakeCountdown; // When wake is requested
static void handle_bus_reset(uint8_t rhport);
static void dcd_transmit_packet(xfer_ctl_t *xfer, uint16_t ep_ix);
static bool edpt_xfer(uint8_t rhport, uint8_t ep_addr);
static void dcd_ep_ctr_handler(void);
// PMA allocation/access
static uint16_t ep_buf_ptr; ///< Points to first free memory location
@@ -285,7 +284,7 @@ static void handle_bus_reset(uint8_t rhport) {
}
// Handle CTR interrupt for the TX/IN direction
static void dcd_ep_ctr_tx_handler(uint32_t ep_id) {
static void handle_ctr_tx(uint32_t ep_id) {
uint32_t ep_reg = ep_read(ep_id) & USB_EPREG_MASK;
// Verify the CTR bit is set. This was in the ST Micro code, but I'm not sure it's actually necessary?
@@ -319,7 +318,7 @@ static void dcd_ep_ctr_tx_handler(uint32_t ep_id) {
}
// Handle CTR interrupt for the RX/OUT direction
static void dcd_ep_ctr_rx_handler(uint32_t ep_id) {
static void handle_ctr_rx(uint32_t ep_id) {
#ifdef FSDEV_BUS_32BIT
/* https://www.st.com/resource/en/errata_sheet/es0561-stm32h503cbebkbrb-device-errata-stmicroelectronics.pdf
* From STM32H503 errata 2.15.1: Buffer description table update completes after CTR interrupt triggers
@@ -416,19 +415,6 @@ static void dcd_ep_ctr_rx_handler(uint32_t ep_id) {
ep_write(ep_id, ep_reg);
}
static void dcd_ep_ctr_handler(void) {
uint32_t wIstr;
/* stay in loop while pending interrupts */
while (((wIstr = USB->ISTR) & USB_ISTR_CTR) != 0U) {
uint32_t ep_id = wIstr & USB_ISTR_EP_ID;
if ((wIstr & USB_ISTR_DIR) == 0U) {
dcd_ep_ctr_tx_handler(ep_id); // TX/IN
} else {
dcd_ep_ctr_rx_handler(ep_id); // RX/OUT
}
}
}
void dcd_int_handler(uint8_t rhport) {
uint32_t int_status = USB->ISTR;
// const uint32_t handled_ints = USB_ISTR_CTR | USB_ISTR_RESET | USB_ISTR_WKUP
@@ -453,12 +439,6 @@ void dcd_int_handler(uint8_t rhport) {
return; // Don't do the rest of the things here; perhaps they've been cleared?
}
if (int_status & USB_ISTR_CTR) {
/* servicing of the endpoint correct transfer interrupt */
/* clear of the CTR flag into the sub */
dcd_ep_ctr_handler();
}
if (int_status & USB_ISTR_WKUP) {
USB->CNTR &= ~USB_CNTR_LPMODE;
USB->CNTR &= ~USB_CNTR_FSUSP;
@@ -489,6 +469,19 @@ void dcd_int_handler(uint8_t rhport) {
}
USB->ISTR = (fsdev_bus_t)~USB_ISTR_ESOF;
}
// loop to handle all pending CTR interrupts
while (int_status & USB_ISTR_CTR) {
uint32_t const ep_id = int_status & USB_ISTR_EP_ID;
if ((int_status & USB_ISTR_DIR) == 0U) {
handle_ctr_tx(ep_id); // TX/IN
} else {
handle_ctr_rx(ep_id); // RX/OUT or both (RX/TX !!)
}
int_status = USB->ISTR;
}
}
//--------------------------------------------------------------------+