From 68d34c8a744d16ae449577a71c67b19a4b1100d0 Mon Sep 17 00:00:00 2001 From: Felipe Balbi Date: Mon, 30 May 2016 13:34:58 +0300 Subject: [PATCH] usb: dwc3: gadget: keep track of allocated and queued reqs We will be using this information to change how we figure out when we need LST bit. For now, just update our counters. Signed-off-by: Felipe Balbi --- drivers/usb/dwc3/core.h | 4 ++++ drivers/usb/dwc3/gadget.c | 7 +++++++ drivers/usb/dwc3/trace.h | 9 +++++++-- 3 files changed, 18 insertions(+), 2 deletions(-) diff --git a/drivers/usb/dwc3/core.h b/drivers/usb/dwc3/core.h index dcdba14e10f0..45d6de5107c7 100644 --- a/drivers/usb/dwc3/core.h +++ b/drivers/usb/dwc3/core.h @@ -497,6 +497,8 @@ struct dwc3_event_buffer { * @type: set to bmAttributes & USB_ENDPOINT_XFERTYPE_MASK * @resource_index: Resource transfer index * @interval: the interval on which the ISOC transfer is started + * @allocated_requests: number of requests allocated + * @queued_requests: number of requests queued for transfer * @name: a human readable name e.g. ep1out-bulk * @direction: true for TX, false for RX * @stream_capable: true when streams are enabled @@ -541,6 +543,8 @@ struct dwc3_ep { u8 number; u8 type; u8 resource_index; + u32 allocated_requests; + u32 queued_requests; u32 interval; char name[20]; diff --git a/drivers/usb/dwc3/gadget.c b/drivers/usb/dwc3/gadget.c index e7e493b45084..1cd4b50cf35b 100644 --- a/drivers/usb/dwc3/gadget.c +++ b/drivers/usb/dwc3/gadget.c @@ -741,6 +741,8 @@ static struct usb_request *dwc3_gadget_ep_alloc_request(struct usb_ep *ep, req->epnum = dep->number; req->dep = dep; + dep->allocated_requests++; + trace_dwc3_alloc_request(req); return &req->request; @@ -750,7 +752,9 @@ static void dwc3_gadget_ep_free_request(struct usb_ep *ep, struct usb_request *request) { struct dwc3_request *req = to_dwc3_request(request); + struct dwc3_ep *dep = to_dwc3_ep(ep); + dep->allocated_requests--; trace_dwc3_free_request(req); kfree(req); } @@ -831,6 +835,8 @@ static void dwc3_prepare_one_trb(struct dwc3_ep *dep, trb->ctrl |= DWC3_TRB_CTRL_HWO; + dep->queued_requests++; + trace_dwc3_prepare_trb(dep, trb); } @@ -1936,6 +1942,7 @@ static int __dwc3_cleanup_done_trbs(struct dwc3 *dwc, struct dwc3_ep *dep, unsigned int s_pkt = 0; unsigned int trb_status; + dep->queued_requests--; trace_dwc3_complete_trb(dep, trb); if ((trb->ctrl & DWC3_TRB_CTRL_HWO) && status != -ESHUTDOWN) diff --git a/drivers/usb/dwc3/trace.h b/drivers/usb/dwc3/trace.h index cafd69fc7eb8..d24cefd191b5 100644 --- a/drivers/usb/dwc3/trace.h +++ b/drivers/usb/dwc3/trace.h @@ -231,6 +231,8 @@ DECLARE_EVENT_CLASS(dwc3_log_trb, TP_STRUCT__entry( __dynamic_array(char, name, DWC3_MSG_MAX) __field(struct dwc3_trb *, trb) + __field(u32, allocated) + __field(u32, queued) __field(u32, bpl) __field(u32, bph) __field(u32, size) @@ -239,13 +241,16 @@ DECLARE_EVENT_CLASS(dwc3_log_trb, TP_fast_assign( snprintf(__get_str(name), DWC3_MSG_MAX, "%s", dep->name); __entry->trb = trb; + __entry->allocated = dep->allocated_requests; + __entry->queued = dep->queued_requests; __entry->bpl = trb->bpl; __entry->bph = trb->bph; __entry->size = trb->size; __entry->ctrl = trb->ctrl; ), - TP_printk("%s: trb %p buf %08x%08x size %d ctrl %08x (%c%c%c%c:%c%c:%s)", - __get_str(name), __entry->trb, __entry->bph, __entry->bpl, + TP_printk("%s: %d/%d trb %p buf %08x%08x size %d ctrl %08x (%c%c%c%c:%c%c:%s)", + __get_str(name), __entry->queued, __entry->allocated, + __entry->trb, __entry->bph, __entry->bpl, __entry->size, __entry->ctrl, __entry->ctrl & DWC3_TRB_CTRL_HWO ? 'H' : 'h', __entry->ctrl & DWC3_TRB_CTRL_LST ? 'L' : 'l', -- 2.11.0