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-rw-r--r--src/portable/synopsys/dwc2/hcd_dwc2.c88
1 files changed, 72 insertions, 16 deletions
diff --git a/src/portable/synopsys/dwc2/hcd_dwc2.c b/src/portable/synopsys/dwc2/hcd_dwc2.c
index 7fbefff86..05efacbee 100644
--- a/src/portable/synopsys/dwc2/hcd_dwc2.c
+++ b/src/portable/synopsys/dwc2/hcd_dwc2.c
@@ -37,7 +37,8 @@ enum {
};
enum {
- HCD_XFER_PERIOD_SPLIT_NYET_MAX = 3
+ HCD_XFER_PERIOD_SPLIT_NYET_MAX = 3,
+ HCD_FRAME_NUMBER_MASK = 0x3fff
};
//--------------------------------------------------------------------
@@ -56,18 +57,21 @@ typedef struct {
};
struct TU_ATTR_PACKED {
- uint32_t uframe_interval : 18; // micro-frame interval
+ uint32_t uframe_interval : 19; // micro-frame interval
uint32_t speed : 2;
uint32_t next_pid : 2; // PID for next transfer
uint32_t next_do_ping : 1; // Do PING for next transfer if possible (highspeed OUT)
uint32_t closing : 1; // endpoint is closing
- // uint32_t : 8;
+ uint32_t periodic_phase : 1; // periodic transfer phase is established
+ uint32_t xfer_pending : 1; // periodic transfer waiting for its service interval
+ // uint32_t : 5;
};
- uint32_t uframe_countdown; // micro-frame count down to transfer for periodic, only need 18-bit
+ uint32_t uframe_countdown; // micro-frame count down to transfer for periodic, only need 19-bit
uint8_t* buffer;
uint16_t buflen;
+ uint16_t periodic_frame; // frame/microframe number of the last scheduled periodic transaction
} hcd_endpoint_t;
// Additional info for each channel when it is active
@@ -547,7 +551,7 @@ bool hcd_edpt_open(uint8_t rhport, uint8_t dev_addr, const tusb_desc_endpoint_t*
edpt->next_pid = HCTSIZ_PID_DATA0;
switch (desc_ep->bmAttributes.xfer) {
case TUSB_XFER_ISOCHRONOUS:
- edpt->uframe_interval = 1 << (desc_ep->bInterval - 1);
+ edpt->uframe_interval = 1u << (desc_ep->bInterval - 1);
if (bus_info.speed == TUSB_SPEED_FULL) {
edpt->uframe_interval <<= 3;
}
@@ -555,7 +559,7 @@ bool hcd_edpt_open(uint8_t rhport, uint8_t dev_addr, const tusb_desc_endpoint_t*
case TUSB_XFER_INTERRUPT:
if (bus_info.speed == TUSB_SPEED_HIGH) {
- edpt->uframe_interval = 1 << (desc_ep->bInterval - 1);
+ edpt->uframe_interval = 1u << (desc_ep->bInterval - 1);
} else {
edpt->uframe_interval = desc_ep->bInterval << 3;
}
@@ -701,7 +705,44 @@ static bool edpt_xfer_kickoff(dwc2_regs_t* dwc2, uint8_t ep_id) {
xfer->ep_id = ep_id;
xfer->result = XFER_RESULT_INVALID;
- return channel_xfer_start(dwc2, ch_id);
+ const bool result = channel_xfer_start(dwc2, ch_id);
+ if (result && channel_is_periodic(_hcd_data.edpt[ep_id].hcchar)) {
+ hcd_endpoint_t* edpt = &_hcd_data.edpt[ep_id];
+ edpt->periodic_frame = (uint16_t) ((dwc2->hfnum + 1u) & HCD_FRAME_NUMBER_MASK);
+ edpt->periodic_phase = 1;
+ edpt->xfer_pending = 0;
+ }
+ return result;
+}
+
+static uint32_t periodic_xfer_countdown(dwc2_regs_t* dwc2, hcd_endpoint_t const* edpt) {
+ const uint32_t ucount = (hprt_speed_get(dwc2) == TUSB_SPEED_HIGH) ? 1u : 8u;
+ const uint16_t frame = (uint16_t) (dwc2->hfnum & HCD_FRAME_NUMBER_MASK);
+ const uint16_t elapsed_frames = (uint16_t) (frame - edpt->periodic_frame) & HCD_FRAME_NUMBER_MASK;
+ const uint32_t elapsed_uframes = (uint32_t) elapsed_frames * ucount;
+
+ if (elapsed_uframes < edpt->uframe_interval) {
+ return edpt->uframe_interval - elapsed_uframes - ucount;
+ }
+
+ // The service opportunity was missed. Keep the established phase and use
+ // the next interval rather than starting a new interval from this request.
+ return edpt->uframe_interval - (elapsed_uframes % edpt->uframe_interval) - ucount;
+}
+
+static void periodic_xfer_defer(dwc2_regs_t* dwc2, hcd_endpoint_t* edpt, uint32_t uframe_countdown) {
+ const uint32_t gahbcfg = dwc2->gahbcfg;
+ dwc2->gahbcfg = gahbcfg & ~GAHBCFG_GINT;
+
+ edpt->uframe_countdown = uframe_countdown;
+ edpt->xfer_pending = 1;
+
+ if (0 == (dwc2->gintmsk & GINTMSK_SOFM)) {
+ dwc2->gintsts = GINTSTS_SOF;
+ dwc2->gintmsk |= GINTMSK_SOFM;
+ }
+
+ dwc2->gahbcfg = gahbcfg;
}
bool hcd_edpt_xfer(uint8_t rhport, uint8_t dev_addr, uint8_t ep_addr, uint8_t * buffer, uint16_t buflen) {
@@ -722,6 +763,17 @@ bool hcd_edpt_xfer(uint8_t rhport, uint8_t dev_addr, uint8_t ep_addr, uint8_t *
edpt->hcchar_bm.ep_dir = ep_dir;
}
+ if (channel_is_periodic(edpt->hcchar) && edpt->periodic_phase) {
+ const uint32_t ucount = (hprt_speed_get(dwc2) == TUSB_SPEED_HIGH) ? 1u : 8u;
+ if (edpt->uframe_interval > ucount) {
+ const uint32_t countdown = periodic_xfer_countdown(dwc2, edpt);
+ if (countdown > 0) {
+ periodic_xfer_defer(dwc2, edpt, countdown);
+ return true;
+ }
+ }
+ }
+
return edpt_xfer_kickoff(dwc2, ep_id);
}
@@ -733,6 +785,13 @@ bool hcd_edpt_abort_xfer(uint8_t rhport, uint8_t dev_addr, uint8_t ep_addr) {
const uint8_t ep_dir = tu_edpt_dir(ep_addr);
const uint8_t ep_id = edpt_find_opened(dev_addr, ep_num, ep_dir);
TU_VERIFY(ep_id < CFG_TUH_DWC2_ENDPOINT_MAX);
+ hcd_endpoint_t* edpt = &_hcd_data.edpt[ep_id];
+
+ if (edpt->xfer_pending) {
+ edpt->xfer_pending = 0;
+ edpt->uframe_countdown = 0;
+ return true;
+ }
// hcd_int_disable(rhport);
@@ -812,12 +871,7 @@ static void channel_xfer_in_retry(dwc2_regs_t* dwc2, uint8_t ch_id, uint32_t hci
if (hcchar.ep_type != HCCHAR_EPTYPE_ISOCHRONOUS) {
edpt->next_pid = hctsiz.pid; // save PID
}
- edpt->uframe_countdown = edpt->uframe_interval - ucount;
- // enable SOF interrupt if not already enabled
- if (0 == (dwc2->gintmsk & GINTMSK_SOFM)) {
- dwc2->gintsts = GINTSTS_SOF;
- dwc2->gintmsk |= GINTMSK_SOFM;
- }
+ periodic_xfer_defer(dwc2, edpt, periodic_xfer_countdown(dwc2, edpt));
// already halted, de-allocate channel (called from DMA isr)
channel_dealloc(dwc2, ch_id);
}
@@ -1384,15 +1438,17 @@ static bool handle_sof_irq(uint8_t rhport, bool in_isr) {
for(uint8_t ep_id = 0; ep_id < CFG_TUH_DWC2_ENDPOINT_MAX; ep_id++) {
hcd_endpoint_t *edpt = &_hcd_data.edpt[ep_id];
if (edpt->closing == 0) {
- if (edpt->hcchar_bm.enable && channel_is_periodic(edpt->hcchar) && edpt->uframe_countdown > 0) {
- edpt->uframe_countdown -= tu_min32(ucount, edpt->uframe_countdown);
+ if (edpt->hcchar_bm.enable && channel_is_periodic(edpt->hcchar) && edpt->xfer_pending) {
+ if (edpt->uframe_countdown > 0) {
+ edpt->uframe_countdown -= tu_min32(ucount, edpt->uframe_countdown);
+ }
if (edpt->uframe_countdown == 0) {
if (!edpt_xfer_kickoff(dwc2, ep_id)) {
edpt->uframe_countdown = ucount; // failed to start, try again next frame
}
}
- more_isr = true;
+ more_isr = more_isr || edpt->xfer_pending;
}
}
}
generated by cgit v1.3.1 (git 2.54.0) at 2026-09-05 16:17:16 +0000