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usb: dwc3: gadget: add dwc3_request status tracking 

This patch starts tracking dwc3_request status. A following patch will
build on top of this to prevent a request from being queued twice.

Signed-off-by: Felipe Balbi <felipe.balbi@linux.intel.com>
This commit is contained in:
Felipe Balbi 2019-01-11 12:57:09 +02:00
parent 546970fdab
commit a3af5e3ad3
3 changed files with 14 additions and 0 deletions
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9
drivers/usb/dwc3/core.h
View File

@ -863,6 +863,7 @@ struct dwc3_hwparams {
* @num_pending_sgs: counter to pending sgs
* @num_queued_sgs: counter to the number of sgs which already got queued
* @remaining: amount of data remaining
* @status: internal dwc3 request status tracking
* @epnum: endpoint number to which this request refers
* @trb: pointer to struct dwc3_trb
* @trb_dma: DMA address of @trb
@ -883,6 +884,14 @@ struct dwc3_request {
unsigned num_pending_sgs;
unsigned int num_queued_sgs;
unsigned remaining;
unsigned int status;
#define DWC3_REQUEST_STATUS_QUEUED 0
#define DWC3_REQUEST_STATUS_STARTED 1
#define DWC3_REQUEST_STATUS_CANCELLED 2
#define DWC3_REQUEST_STATUS_COMPLETED 3
#define DWC3_REQUEST_STATUS_UNKNOWN -1
u8 epnum;
struct dwc3_trb *trb;
dma_addr_t trb_dma;

3
drivers/usb/dwc3/gadget.c
View File

@ -209,6 +209,7 @@ void dwc3_gadget_giveback(struct dwc3_ep *dep, struct dwc3_request *req,
struct dwc3 *dwc = dep->dwc;
dwc3_gadget_del_and_unmap_request(dep, req, status);
req->status = DWC3_REQUEST_STATUS_COMPLETED;
spin_unlock(&dwc->lock);
usb_gadget_giveback_request(&dep->endpoint, &req->request);
@ -847,6 +848,7 @@ static struct usb_request *dwc3_gadget_ep_alloc_request(struct usb_ep *ep,
req->direction = dep->direction;
req->epnum = dep->number;
req->dep = dep;
req->status = DWC3_REQUEST_STATUS_UNKNOWN;
trace_dwc3_alloc_request(req);
@ -1443,6 +1445,7 @@ static int __dwc3_gadget_ep_queue(struct dwc3_ep *dep, struct dwc3_request *req)
trace_dwc3_ep_queue(req);
list_add_tail(&req->list, &dep->pending_list);
req->status = DWC3_REQUEST_STATUS_QUEUED;
/*
* NOTICE: Isochronous endpoints should NEVER be prestarted. We must

2
drivers/usb/dwc3/gadget.h
View File

@ -76,6 +76,7 @@ static inline void dwc3_gadget_move_started_request(struct dwc3_request *req)
struct dwc3_ep *dep = req->dep;
req->started = true;
req->status = DWC3_REQUEST_STATUS_STARTED;
list_move_tail(&req->list, &dep->started_list);
}
@ -91,6 +92,7 @@ static inline void dwc3_gadget_move_cancelled_request(struct dwc3_request *req)
struct dwc3_ep *dep = req->dep;
req->started = false;
req->status = DWC3_REQUEST_STATUS_CANCELLED;
list_move_tail(&req->list, &dep->cancelled_list);
}