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Merge "USB: dwc3: gadget: Queue data for 16 micro frames ahead in future"

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QCTECMDR Service 2025-01-02 00:40:25 -08:00 • committed by Gerrit - the friendly Code Review server
commit 9d163aee48
3 changed files with 22 additions and 4 deletions
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2
drivers/usb/dwc3/core.h
View file

@ -735,6 +735,7 @@ struct dwc3_ep_events {
* @desc: usb_endpoint_descriptor pointer
* @dwc: pointer to DWC controller
* @saved_state: ep state saved during hibernation
* @missed_isoc_packets: counter for missed packets sent
* @flags: endpoint flags (wedged, stalled, ...)
* @number: endpoint number (1 - 15)
* @type: set to bmAttributes & USB_ENDPOINT_XFERTYPE_MASK
@ -768,6 +769,7 @@ struct dwc3_ep {
struct dwc3 *dwc;
u32 saved_state;
u32 missed_isoc_packets;
unsigned flags;
#define DWC3_EP_ENABLED BIT(0)
#define DWC3_EP_STALL BIT(1)

6
drivers/usb/dwc3/debug_ipc.c
View file

@ -1,6 +1,7 @@
// SPDX-License-Identifier: GPL-2.0-only
/*
* Copyright (c) 2018-2019 The Linux Foundation. All rights reserved.
* Copyright (c) 2021, Qualcomm Innovation Center, Inc. All rights reserved.
*/
#include "debug.h"
@ -150,10 +151,11 @@ void dwc3_dbg_dma_unmap(struct dwc3 *dwc, u8 ep_num, struct dwc3_request *req)
req->trb->ctrl & DWC3_TRB_CTRL_HWO);
} else {
ipc_log_string(dwc->dwc_dma_ipc_log_ctxt,
"%02X-%-3.3s %-25.25s 0x%pK 0x%lx %u 0x%lx %d",
"%02X-%-3.3s %-25.25s 0x%pK 0x%lx %u 0x%lx %d %u",
ep_num >> 1, ep_num & 1 ? "IN":"OUT", "UNMAP",
&req->request, req->request.dma, req->request.length,
req->trb_dma, req->trb->ctrl & DWC3_TRB_CTRL_HWO);
req->trb_dma, req->trb->ctrl & DWC3_TRB_CTRL_HWO,
req->request.actual);
}
}

18
drivers/usb/dwc3/gadget.c
View file

@ -309,6 +309,12 @@ void dwc3_gadget_giveback(struct dwc3_ep *dep, struct dwc3_request *req,
dwc3_gadget_del_and_unmap_request(dep, req, status);
req->status = DWC3_REQUEST_STATUS_COMPLETED;
if (usb_endpoint_xfer_isoc(dep->endpoint.desc) &&
(list_empty(&dep->started_list))) {
dep->flags |= DWC3_EP_PENDING_REQUEST;
dbg_event(dep->number, "STARTEDLISTEMPTY", 0);
}
spin_unlock(&dwc->lock);
usb_gadget_giveback_request(&dep->endpoint, &req->request);
spin_lock(&dwc->lock);
@ -984,6 +990,8 @@ static int dwc3_gadget_ep_disable(struct usb_ep *ep)
spin_lock_irqsave(&dwc->lock, flags);
ret = __dwc3_gadget_ep_disable(dep);
dbg_event(dep->number, "DISABLE", ret);
dbg_event(dep->number, "MISSEDISOCPKTS", dep->missed_isoc_packets);
dep->missed_isoc_packets = 0;
spin_unlock_irqrestore(&dwc->lock, flags);
return ret;
@ -1662,6 +1670,7 @@ static int __dwc3_gadget_start_isoc(struct dwc3_ep *dep)
}
for (i = 0; i < DWC3_ISOC_MAX_RETRIES; i++) {
dep->frame_number = __dwc3_gadget_get_frame(dep->dwc) + 16;
dep->frame_number = DWC3_ALIGN_FRAME(dep, i + 1);
ret = __dwc3_gadget_kick_transfer(dep);
@ -1728,8 +1737,10 @@ static int __dwc3_gadget_ep_queue(struct dwc3_ep *dep, struct dwc3_request *req)
if ((dep->flags & DWC3_EP_PENDING_REQUEST)) {
if (!(dep->flags & DWC3_EP_TRANSFER_STARTED)) {
dep->flags &= ~DWC3_EP_PENDING_REQUEST;
return __dwc3_gadget_start_isoc(dep);
}
return 0;
}
}
@ -3399,15 +3410,18 @@ static void dwc3_gadget_endpoint_transfer_in_progress(struct dwc3_ep *dep,
if (event->status & DEPEVT_STATUS_BUSERR)
status = -ECONNRESET;
dwc3_gadget_ep_cleanup_completed_requests(dep, event, status);
if (event->status & DEPEVT_STATUS_MISSED_ISOC) {
status = -EXDEV;
dep->missed_isoc_packets++;
dbg_event(dep->number, "MISSEDISOC", 0);
if (list_empty(&dep->started_list))
stop = true;
}
dwc3_gadget_ep_cleanup_completed_requests(dep, event, status);
if (dep->flags & DWC3_EP_END_TRANSFER_PENDING)
goto out;