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move buffer and buflen to hcd_endpoint_t to support periodic endpoint

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This commit is contained in:
hathach
2024-11-01 20:58:29 +07:00
parent b1182de872
commit 4f288c030a
2 changed files with 109 additions and 78 deletions
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12
src/portable/synopsys/dwc2/dwc2_common.c
View File

@@ -224,15 +224,9 @@ bool dwc2_core_init(uint8_t rhport, bool is_highspeed) {
dfifo_flush_tx(dwc2, 0x10); // all tx fifo dfifo_flush_tx(dwc2, 0x10); // all tx fifo
dfifo_flush_rx(dwc2); dfifo_flush_rx(dwc2);
// Clear all pending interrupts // Clear pending and disable all interrupts
uint32_t int_mask; dwc2->gintsts = 0xFFFFFFFFU;
dwc2->gotgint = 0xFFFFFFFFU;
int_mask = dwc2->gintsts;
dwc2->gintsts |= int_mask;
int_mask = dwc2->gotgint;
dwc2->gotgint |= int_mask;
dwc2->gintmsk = 0; dwc2->gintmsk = 0;
return true; return true;

175
src/portable/synopsys/dwc2/hcd_dwc2.c
View File

@@ -66,9 +66,13 @@ typedef struct {
uint32_t hcsplt; uint32_t hcsplt;
dwc2_channel_split_t hcsplt_bm; dwc2_channel_split_t hcsplt_bm;
}; };
uint8_t next_pid; uint8_t next_pid;
uint16_t frame_interval; uint16_t frame_interval;
uint16_t frame_countdown; uint16_t frame_countdown;
uint8_t* buffer;
uint16_t buflen;
} hcd_endpoint_t; } hcd_endpoint_t;
// Additional info for each channel when it is active // Additional info for each channel when it is active
@@ -83,8 +87,6 @@ typedef struct {
uint16_t xferred_bytes; // bytes that accumulate transferred though USB bus for the whole hcd_edpt_xfer(), which can uint16_t xferred_bytes; // bytes that accumulate transferred though USB bus for the whole hcd_edpt_xfer(), which can
// be composed of multiple channel_xfer_start() (retry with NAK/NYET) // be composed of multiple channel_xfer_start() (retry with NAK/NYET)
uint16_t buf_len;
uint8_t* buf_start;
uint16_t out_fifo_bytes; // bytes written to TX FIFO (may not be transferred on USB bus). uint16_t out_fifo_bytes; // bytes written to TX FIFO (may not be transferred on USB bus).
} hcd_xfer_t; } hcd_xfer_t;
@@ -490,7 +492,6 @@ bool hcd_edpt_open(uint8_t rhport, uint8_t dev_addr, const tusb_desc_endpoint_t*
static void channel_xfer_cleanup(dwc2_regs_t* dwc2, uint8_t ch_id) { static void channel_xfer_cleanup(dwc2_regs_t* dwc2, uint8_t ch_id) {
hcd_xfer_t* xfer = &_hcd_data.xfer[ch_id]; hcd_xfer_t* xfer = &_hcd_data.xfer[ch_id];
dwc2_channel_t* channel = &dwc2->channel[ch_id]; dwc2_channel_t* channel = &dwc2->channel[ch_id];
TU_ASSERT(xfer->ep_id < CFG_TUH_DWC2_ENDPOINT_MAX, );
hcd_endpoint_t* edpt = &_hcd_data.edpt[xfer->ep_id]; hcd_endpoint_t* edpt = &_hcd_data.edpt[xfer->ep_id];
edpt->next_pid = channel->hctsiz_bm.pid; // save PID edpt->next_pid = channel->hctsiz_bm.pid; // save PID
@@ -500,12 +501,12 @@ static void channel_xfer_cleanup(dwc2_regs_t* dwc2, uint8_t ch_id) {
* was halted before its normal completion. (Can't use the hctsiz.xfersize field because that reflects the number of * was halted before its normal completion. (Can't use the hctsiz.xfersize field because that reflects the number of
* bytes transferred via the AHB, not the USB). */ * bytes transferred via the AHB, not the USB). */
const uint16_t remain_packets = channel->hctsiz_bm.packet_count; const uint16_t remain_packets = channel->hctsiz_bm.packet_count;
const uint16_t total_packets = cal_packet_count(xfer->buf_len, channel->hcchar_bm.ep_size); const uint16_t total_packets = cal_packet_count(edpt->buflen, channel->hcchar_bm.ep_size);
const uint16_t actual_bytes = (total_packets - remain_packets) * channel->hcchar_bm.ep_size; const uint16_t actual_bytes = (total_packets - remain_packets) * channel->hcchar_bm.ep_size;
xfer->xferred_bytes += actual_bytes; xfer->xferred_bytes += actual_bytes;
xfer->buf_start += actual_bytes;
xfer->buf_len -= actual_bytes;
xfer->out_fifo_bytes = 0; xfer->out_fifo_bytes = 0;
edpt->buffer += actual_bytes;
edpt->buflen -= actual_bytes;
} }
static bool channel_xfer_start(dwc2_regs_t* dwc2, uint8_t ch_id) { static bool channel_xfer_start(dwc2_regs_t* dwc2, uint8_t ch_id) {
@@ -525,8 +526,8 @@ static bool channel_xfer_start(dwc2_regs_t* dwc2, uint8_t ch_id) {
channel->hcchar = (edpt->hcchar & ~HCCHAR_CHENA); channel->hcchar = (edpt->hcchar & ~HCCHAR_CHENA);
// hctsiz: zero length packet still count as 1 // hctsiz: zero length packet still count as 1
const uint16_t packet_count = cal_packet_count(xfer->buf_len, hcchar_bm->ep_size); const uint16_t packet_count = cal_packet_count(edpt->buflen, hcchar_bm->ep_size);
uint32_t hctsiz = (edpt->next_pid << HCTSIZ_PID_Pos) | (packet_count << HCTSIZ_PKTCNT_Pos) | xfer->buf_len; uint32_t hctsiz = (edpt->next_pid << HCTSIZ_PID_Pos) | (packet_count << HCTSIZ_PKTCNT_Pos) | edpt->buflen;
if (xfer->do_ping && edpt->next_pid != HCTSIZ_PID_SETUP && hcchar_bm->ep_dir == TUSB_DIR_OUT) { if (xfer->do_ping && edpt->next_pid != HCTSIZ_PID_SETUP && hcchar_bm->ep_dir == TUSB_DIR_OUT) {
hcd_devtree_info_t devtree_info; hcd_devtree_info_t devtree_info;
hcd_devtree_get_info(hcchar_bm->dev_addr, &devtree_info); hcd_devtree_get_info(hcchar_bm->dev_addr, &devtree_info);
@@ -547,14 +548,14 @@ static bool channel_xfer_start(dwc2_regs_t* dwc2, uint8_t ch_id) {
// split: TODO support later // split: TODO support later
channel->hcsplt = edpt->hcsplt; channel->hcsplt = edpt->hcsplt;
channel->hcint = 0xFFFFFFFF; // clear all channel interrupts channel->hcint = 0xFFFFFFFFU; // clear all channel interrupts
if (dma_host_enabled(dwc2)) { if (dma_host_enabled(dwc2)) {
uint32_t hcintmsk = HCINT_HALTED; uint32_t hcintmsk = HCINT_HALTED;
channel->hcintmsk = hcintmsk; channel->hcintmsk = hcintmsk;
dwc2->haintmsk |= TU_BIT(ch_id); dwc2->haintmsk |= TU_BIT(ch_id);
channel->hcdma = (uint32_t) xfer->buf_start; channel->hcdma = (uint32_t) edpt->buffer;
if (hcchar_bm->ep_dir == TUSB_DIR_IN) { if (hcchar_bm->ep_dir == TUSB_DIR_IN) {
channel_send_in_token(dwc2, channel); channel_send_in_token(dwc2, channel);
@@ -580,7 +581,7 @@ static bool channel_xfer_start(dwc2_regs_t* dwc2, uint8_t ch_id) {
channel_send_in_token(dwc2, channel); channel_send_in_token(dwc2, channel);
} else { } else {
channel->hcchar |= HCCHAR_CHENA; channel->hcchar |= HCCHAR_CHENA;
if (xfer->buf_len > 0) { if (edpt->buflen > 0) {
// To prevent conflict with other channel, we will enable periodic/non-periodic FIFO empty interrupt accordingly // To prevent conflict with other channel, we will enable periodic/non-periodic FIFO empty interrupt accordingly
// And write packet in the interrupt handler // And write packet in the interrupt handler
dwc2->gintmsk |= (is_period ? GINTSTS_PTX_FIFO_EMPTY : GINTSTS_NPTX_FIFO_EMPTY); dwc2->gintmsk |= (is_period ? GINTSTS_PTX_FIFO_EMPTY : GINTSTS_NPTX_FIFO_EMPTY);
@@ -605,9 +606,9 @@ bool hcd_edpt_xfer(uint8_t rhport, uint8_t dev_addr, uint8_t ep_addr, uint8_t *
TU_ASSERT(ch_id < 16); // all channel are in used TU_ASSERT(ch_id < 16); // all channel are in used
hcd_xfer_t* xfer = &_hcd_data.xfer[ch_id]; hcd_xfer_t* xfer = &_hcd_data.xfer[ch_id];
xfer->ep_id = ep_id; xfer->ep_id = ep_id;
xfer->buf_start = buffer;
xfer->buf_len = buflen;
xfer->result = XFER_RESULT_INVALID; xfer->result = XFER_RESULT_INVALID;
edpt->buffer = buffer;
edpt->buflen = buflen;
if (ep_num == 0) { if (ep_num == 0) {
// update ep_dir since control endpoint can switch direction // update ep_dir since control endpoint can switch direction
@@ -681,8 +682,10 @@ static void handle_rxflvl_irq(uint8_t rhport) {
// In packet received // In packet received
const uint16_t byte_count = grxstsp_bm.byte_count; const uint16_t byte_count = grxstsp_bm.byte_count;
hcd_xfer_t* xfer = &_hcd_data.xfer[ch_id]; hcd_xfer_t* xfer = &_hcd_data.xfer[ch_id];
TU_ASSERT(xfer->ep_id < CFG_TUH_DWC2_ENDPOINT_MAX,);
hcd_endpoint_t* edpt = &_hcd_data.edpt[xfer->ep_id];
dfifo_read_packet(dwc2, xfer->buf_start + xfer->xferred_bytes, byte_count); dfifo_read_packet(dwc2, edpt->buffer + xfer->xferred_bytes, byte_count);
xfer->xferred_bytes += byte_count; xfer->xferred_bytes += byte_count;
const uint16_t remain_bytes = (uint16_t) channel->hctsiz_bm.xfer_size; const uint16_t remain_bytes = (uint16_t) channel->hctsiz_bm.xfer_size;
@@ -692,8 +695,6 @@ static void handle_rxflvl_irq(uint8_t rhport) {
xfer->xferred_bytes -= remain_bytes; xfer->xferred_bytes -= remain_bytes;
// update PID based on remain packets count // update PID based on remain packets count
TU_ASSERT(xfer->ep_id < CFG_TUH_DWC2_ENDPOINT_MAX,);
hcd_endpoint_t* edpt = &_hcd_data.edpt[xfer->ep_id]; // update PID
edpt->next_pid = cal_next_pid(edpt->next_pid, remain_packets); edpt->next_pid = cal_next_pid(edpt->next_pid, remain_packets);
} else { } else {
if (remain_packets) { if (remain_packets) {
@@ -721,6 +722,40 @@ static void handle_rxflvl_irq(uint8_t rhport) {
} }
} }
// return true if there is still pending data and need more ISR
static bool handle_txfifo_empty(dwc2_regs_t* dwc2, bool is_periodic) {
// Use period txsts for both p/np to get request queue space available (1-bit difference, it is small enough)
volatile dwc2_hptxsts_t* txsts_bm = (volatile dwc2_hptxsts_t*) (is_periodic ? &dwc2->hptxsts : &dwc2->hnptxsts);
const uint8_t max_channel = DWC2_CHANNEL_COUNT(dwc2);
for (uint8_t ch_id = 0; ch_id < max_channel; ch_id++) {
dwc2_channel_t* channel = &dwc2->channel[ch_id];
// skip writing to FIFO if channel is expecting halted.
if (!(channel->hcintmsk & HCINT_HALTED) && (channel->hcchar_bm.ep_dir == TUSB_DIR_OUT)) {
hcd_xfer_t* xfer = &_hcd_data.xfer[ch_id];
TU_ASSERT(xfer->ep_id < CFG_TUH_DWC2_ENDPOINT_MAX);
hcd_endpoint_t* edpt = &_hcd_data.edpt[xfer->ep_id];
const uint16_t remain_packets = channel->hctsiz_bm.packet_count;
for (uint16_t i = 0; i < remain_packets; i++) {
const uint16_t remain_bytes = edpt->buflen - xfer->out_fifo_bytes;
const uint16_t xact_bytes = tu_min16(remain_bytes, channel->hcchar_bm.ep_size);
// skip if there is not enough space in FIFO and RequestQueue.
// Packet's last word written to FIFO will trigger a request queue
if ((xact_bytes > (txsts_bm->fifo_available << 2)) || (txsts_bm->req_queue_available == 0)) {
return true;
}
dfifo_write_packet(dwc2, ch_id, edpt->buffer + xfer->out_fifo_bytes, xact_bytes);
xfer->out_fifo_bytes += xact_bytes;
}
}
}
return false; // all data written
}
static bool handle_channel_in_slave(dwc2_regs_t* dwc2, uint8_t ch_id, uint32_t hcint) { static bool handle_channel_in_slave(dwc2_regs_t* dwc2, uint8_t ch_id, uint32_t hcint) {
hcd_xfer_t* xfer = &_hcd_data.xfer[ch_id]; hcd_xfer_t* xfer = &_hcd_data.xfer[ch_id];
dwc2_channel_t* channel = &dwc2->channel[ch_id]; dwc2_channel_t* channel = &dwc2->channel[ch_id];
@@ -812,6 +847,8 @@ static bool handle_channel_out_slave(dwc2_regs_t* dwc2, uint8_t ch_id, uint32_t
static bool handle_channel_in_dma(dwc2_regs_t* dwc2, uint8_t ch_id, uint32_t hcint) { static bool handle_channel_in_dma(dwc2_regs_t* dwc2, uint8_t ch_id, uint32_t hcint) {
hcd_xfer_t* xfer = &_hcd_data.xfer[ch_id]; hcd_xfer_t* xfer = &_hcd_data.xfer[ch_id];
dwc2_channel_t* channel = &dwc2->channel[ch_id]; dwc2_channel_t* channel = &dwc2->channel[ch_id];
hcd_endpoint_t* edpt = &_hcd_data.edpt[xfer->ep_id];
bool is_done = false; bool is_done = false;
if (hcint & HCINT_HALTED) { if (hcint & HCINT_HALTED) {
@@ -819,7 +856,7 @@ static bool handle_channel_in_dma(dwc2_regs_t* dwc2, uint8_t ch_id, uint32_t hci
is_done = true; is_done = true;
xfer->err_count = 0; xfer->err_count = 0;
const uint16_t remain_bytes = (uint16_t) channel->hctsiz_bm.xfer_size; const uint16_t remain_bytes = (uint16_t) channel->hctsiz_bm.xfer_size;
xfer->xferred_bytes += (xfer->buf_len - remain_bytes); xfer->xferred_bytes += (edpt->buflen - remain_bytes);
if (hcint & HCINT_STALL) { if (hcint & HCINT_STALL) {
xfer->result = XFER_RESULT_STALLED; xfer->result = XFER_RESULT_STALLED;
} else if (hcint & HCINT_BABBLE_ERR) { } else if (hcint & HCINT_BABBLE_ERR) {
@@ -838,14 +875,23 @@ static bool handle_channel_in_dma(dwc2_regs_t* dwc2, uint8_t ch_id, uint32_t hci
// re-init channel // re-init channel
TU_ASSERT(false); TU_ASSERT(false);
} }
} else if (hcint & (HCINT_ACK | HCINT_NAK | HCINT_DATATOGGLE_ERR)) {
xfer->err_count = 0;
channel->hcintmsk &= ~(HCINT_ACK | HCINT_NAK | HCINT_DATATOGGLE_ERR);
if ((hcint & (HCINT_NAK | HCINT_DATATOGGLE_ERR))) {
edpt->next_pid = channel->hctsiz_bm.pid; // save PID
if (edpt_is_periodic(channel->hcchar_bm.ep_type)){
// for periodic, de-allocate channel, enable SOF set frame counter for later transfer
channel_dealloc(dwc2, ch_id);
edpt->frame_countdown = edpt->frame_interval;
dwc2->gintmsk |= GINTSTS_SOF;
} else {
// for control/bulk: try again immediately
TU_ASSERT(false);
}
}
} }
} else if (hcint & (HCINT_ACK | HCINT_NAK | HCINT_DATATOGGLE_ERR)) {
xfer->err_count = 0;
channel->hcintmsk &= ~(HCINT_ACK | HCINT_NAK | HCINT_DATATOGGLE_ERR);
// if (hcint & (HCINT_NAK | HCINT_DATATOGGLE_ERR)) {
// TU_ASSERT(xfer->ep_id < CFG_TUH_DWC2_ENDPOINT_MAX,);
// hcd_endpoint_t* edpt = &_hcd_data.edpt[xfer->ep_id];
// }
} }
return is_done; return is_done;
@@ -854,6 +900,8 @@ static bool handle_channel_in_dma(dwc2_regs_t* dwc2, uint8_t ch_id, uint32_t hci
static bool handle_channel_out_dma(dwc2_regs_t* dwc2, uint8_t ch_id, uint32_t hcint) { static bool handle_channel_out_dma(dwc2_regs_t* dwc2, uint8_t ch_id, uint32_t hcint) {
hcd_xfer_t* xfer = &_hcd_data.xfer[ch_id]; hcd_xfer_t* xfer = &_hcd_data.xfer[ch_id];
dwc2_channel_t* channel = &dwc2->channel[ch_id]; dwc2_channel_t* channel = &dwc2->channel[ch_id];
hcd_endpoint_t* edpt = &_hcd_data.edpt[xfer->ep_id];
bool is_done = false; bool is_done = false;
if (hcint & HCINT_HALTED) { if (hcint & HCINT_HALTED) {
@@ -862,7 +910,7 @@ static bool handle_channel_out_dma(dwc2_regs_t* dwc2, uint8_t ch_id, uint32_t hc
xfer->err_count = 0; xfer->err_count = 0;
if (hcint & HCINT_XFER_COMPLETE) { if (hcint & HCINT_XFER_COMPLETE) {
xfer->result = XFER_RESULT_SUCCESS; xfer->result = XFER_RESULT_SUCCESS;
xfer->xferred_bytes += xfer->buf_len; xfer->xferred_bytes += edpt->buflen;
} else { } else {
xfer->result = XFER_RESULT_STALLED; xfer->result = XFER_RESULT_STALLED;
channel_xfer_cleanup(dwc2, ch_id); channel_xfer_cleanup(dwc2, ch_id);
@@ -904,6 +952,7 @@ static void handle_channel_irq(uint8_t rhport, bool in_isr) {
if (tu_bit_test(dwc2->haint, ch_id)) { if (tu_bit_test(dwc2->haint, ch_id)) {
dwc2_channel_t* channel = &dwc2->channel[ch_id]; dwc2_channel_t* channel = &dwc2->channel[ch_id];
hcd_xfer_t* xfer = &_hcd_data.xfer[ch_id]; hcd_xfer_t* xfer = &_hcd_data.xfer[ch_id];
TU_ASSERT(xfer->ep_id < CFG_TUH_DWC2_ENDPOINT_MAX,);
dwc2_channel_char_t hcchar_bm = channel->hcchar_bm; dwc2_channel_char_t hcchar_bm = channel->hcchar_bm;
uint32_t hcint = channel->hcint; uint32_t hcint = channel->hcint;
@@ -937,35 +986,21 @@ static void handle_channel_irq(uint8_t rhport, bool in_isr) {
} }
} }
// return true if there is still pending data and need more ISR // SOF is enabled for scheduled periodic transfer
static bool handle_txfifo_empty(dwc2_regs_t* dwc2, bool is_periodic) { static void handle_sof_irq(uint8_t rhport, bool in_isr) {
// Use period txsts for both p/np to get request queue space available (1-bit difference, it is small enough) (void) in_isr;
volatile dwc2_hptxsts_t* txsts_bm = (volatile dwc2_hptxsts_t*) (is_periodic ? &dwc2->hptxsts : &dwc2->hnptxsts); dwc2_regs_t* dwc2 = DWC2_REG(rhport);
(void) dwc2;
const uint8_t max_channel = DWC2_CHANNEL_COUNT(dwc2); // for(uint8_t ep_id; ep_id < CFG_TUH_DWC2_ENDPOINT_MAX; ep_id++) {
for (uint8_t ch_id = 0; ch_id < max_channel; ch_id++) { // hcd_endpoint_t* edpt = &_hcd_data.edpt[ep_id];
dwc2_channel_t* channel = &dwc2->channel[ch_id]; // if (edpt->hcchar_bm.enable && edpt_is_periodic(edpt->hcchar_bm.ep_type) && edpt->frame_countdown > 0) {
// skip writing to FIFO if channel is expecting halted. //
if (!(channel->hcintmsk & HCINT_HALTED) && (channel->hcchar_bm.ep_dir == TUSB_DIR_OUT)) { // edpt->frame_countdown--;
hcd_xfer_t* xfer = &_hcd_data.xfer[ch_id]; // if (edpt->frame_countdown == 0) {
const uint16_t remain_packets = channel->hctsiz_bm.packet_count; // channel_xfer_start(dwc2, ep_id);
for (uint16_t i = 0; i < remain_packets; i++) { // }
const uint16_t remain_bytes = xfer->buf_len - xfer->out_fifo_bytes; // }
const uint16_t xact_bytes = tu_min16(remain_bytes, channel->hcchar_bm.ep_size); // }
// skip if there is not enough space in FIFO and RequestQueue.
// Packet's last word written to FIFO will trigger a request queue
if ((xact_bytes > (txsts_bm->fifo_available << 2)) || (txsts_bm->req_queue_available == 0)) {
return true;
}
dfifo_write_packet(dwc2, ch_id, xfer->buf_start + xfer->out_fifo_bytes, xact_bytes);
xfer->out_fifo_bytes += xact_bytes;
}
}
}
return false; // all data written
} }
/* Handle Host Port interrupt, possible source are: /* Handle Host Port interrupt, possible source are:
@@ -1034,22 +1069,20 @@ static void handle_hprt_irq(uint8_t rhport, bool in_isr) {
} }
/* Interrupt Hierarchy /* Interrupt Hierarchy
HCINTn HPRT HCINTn HPRT
| | | |
HAINT.CHn | HAINT.CHn |
| | | |
GINTSTS : HCInt PrtInt NPTxFEmp PTxFEmpp RXFLVL GINTSTS : HCInt | PrtInt | NPTxFEmp | PTxFEmpp | RXFLVL | SOF
*/ */
void hcd_int_handler(uint8_t rhport, bool in_isr) { void hcd_int_handler(uint8_t rhport, bool in_isr) {
dwc2_regs_t* dwc2 = DWC2_REG(rhport); dwc2_regs_t* dwc2 = DWC2_REG(rhport);
const uint32_t int_mask = dwc2->gintmsk; const uint32_t gintmsk = dwc2->gintmsk;
const uint32_t int_status = dwc2->gintsts & int_mask; const uint32_t gintsts = dwc2->gintsts & gintmsk;
// TU_LOG1_HEX(int_status); // TU_LOG1_HEX(int_status);
if (int_status & GINTSTS_CONIDSTSCHNG) { if (gintsts & GINTSTS_CONIDSTSCHNG) {
// Connector ID status change // Connector ID status change
dwc2->gintsts = GINTSTS_CONIDSTSCHNG; dwc2->gintsts = GINTSTS_CONIDSTSCHNG;
@@ -1059,7 +1092,11 @@ void hcd_int_handler(uint8_t rhport, bool in_isr) {
// TODO wait for SRP if OTG // TODO wait for SRP if OTG
} }
if (int_status & GINTSTS_HPRTINT) { if (gintsts & GINTSTS_SOF) {
handle_sof_irq(rhport, in_isr);
}
if (gintsts & GINTSTS_HPRTINT) {
// Host port interrupt: source is cleared in HPRT register // Host port interrupt: source is cleared in HPRT register
// TU_LOG1_HEX(dwc2->hprt); // TU_LOG1_HEX(dwc2->hprt);
handle_hprt_irq(rhport, in_isr); handle_hprt_irq(rhport, in_isr);
@@ -1067,7 +1104,7 @@ void hcd_int_handler(uint8_t rhport, bool in_isr) {
#if CFG_TUH_DWC2_SLAVE_ENABLE #if CFG_TUH_DWC2_SLAVE_ENABLE
// RxFIFO non-empty interrupt handling, must be handled before HCINT // RxFIFO non-empty interrupt handling, must be handled before HCINT
if (int_status & GINTSTS_RXFLVL) { if (gintsts & GINTSTS_RXFLVL) {
// RXFLVL bit is read-only // RXFLVL bit is read-only
dwc2->gintmsk &= ~GINTSTS_RXFLVL; // disable RXFLVL interrupt while reading dwc2->gintmsk &= ~GINTSTS_RXFLVL; // disable RXFLVL interrupt while reading
@@ -1077,9 +1114,8 @@ void hcd_int_handler(uint8_t rhport, bool in_isr) {
dwc2->gintmsk |= GINTSTS_RXFLVL; dwc2->gintmsk |= GINTSTS_RXFLVL;
} }
#endif
if (int_status & GINTSTS_NPTX_FIFO_EMPTY) { if (gintsts & GINTSTS_NPTX_FIFO_EMPTY) {
// NPTX FIFO empty interrupt, this is read-only and cleared by hardware when FIFO is written // NPTX FIFO empty interrupt, this is read-only and cleared by hardware when FIFO is written
const bool more_isr = handle_txfifo_empty(dwc2, false); const bool more_isr = handle_txfifo_empty(dwc2, false);
if (!more_isr) { if (!more_isr) {
@@ -1087,8 +1123,9 @@ void hcd_int_handler(uint8_t rhport, bool in_isr) {
dwc2->gintmsk &= ~GINTSTS_NPTX_FIFO_EMPTY; dwc2->gintmsk &= ~GINTSTS_NPTX_FIFO_EMPTY;
} }
} }
#endif
if (int_status & GINTSTS_HCINT) { if (gintsts & GINTSTS_HCINT) {
// Host Channel interrupt: source is cleared in HCINT register // Host Channel interrupt: source is cleared in HCINT register
// must bee handled after TX FIFO empty // must bee handled after TX FIFO empty
handle_channel_irq(rhport, in_isr); handle_channel_irq(rhport, in_isr);