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Commit 2870e501 authored by Felipe Balbi's avatar Felipe Balbi
Browse files

usb: dwc3: trace: add a tracepoint for ep enable/disable 



instead of using a simple trace_printk() wrapper,
let's add an actual tracepoint and print further
details about the endpoint being operated upon.

Signed-off-by: default avatarFelipe Balbi <felipe.balbi@linux.intel.com>
parent 9cecca75

drivers/usb/dwc3/gadget.c

+6 −4
Original line number Diff line number Diff line
@@ -587,8 +587,6 @@ static int __dwc3_gadget_ep_enable(struct dwc3_ep *dep, 
	u32			reg;

	int			ret;



	dwc3_trace(trace_dwc3_gadget, "Enabling %s", dep->name);



	if (!(dep->flags & DWC3_EP_ENABLED)) {

		ret = dwc3_gadget_start_config(dwc, dep);

		if (ret)
@@ -617,7 +615,7 @@ static int __dwc3_gadget_ep_enable(struct dwc3_ep *dep, 
		init_waitqueue_head(&dep->wait_end_transfer);



		if (usb_endpoint_xfer_control(desc))

			return 0;

			goto out;



		/* Initialize the TRB ring */

		dep->trb_dequeue = 0;
@@ -664,6 +662,10 @@ static int __dwc3_gadget_ep_enable(struct dwc3_ep *dep, 
		WARN_ON_ONCE(!dep->resource_index);

	}





out:

	trace_dwc3_gadget_ep_enable(dep);



	return 0;

}
@@ -701,7 +703,7 @@ static int __dwc3_gadget_ep_disable(struct dwc3_ep *dep) 
	struct dwc3		*dwc = dep->dwc;

	u32			reg;



	dwc3_trace(trace_dwc3_gadget, "Disabling %s", dep->name);

	trace_dwc3_gadget_ep_disable(dep);



	dwc3_remove_requests(dwc, dep);

drivers/usb/dwc3/trace.h

+51 −0
Original line number Diff line number Diff line
@@ -341,6 +341,57 @@ DEFINE_EVENT(dwc3_log_trb, dwc3_complete_trb, 
	TP_ARGS(dep, trb)

);



DECLARE_EVENT_CLASS(dwc3_log_ep,

	TP_PROTO(struct dwc3_ep *dep),

	TP_ARGS(dep),

	TP_STRUCT__entry(

		__dynamic_array(char, name, DWC3_MSG_MAX)

		__field(unsigned, maxpacket)

		__field(unsigned, maxpacket_limit)

		__field(unsigned, max_streams)

		__field(unsigned, maxburst)

		__field(unsigned, flags)

		__field(unsigned, direction)

		__field(u8, trb_enqueue)

		__field(u8, trb_dequeue)

	),

	TP_fast_assign(

		snprintf(__get_str(name), DWC3_MSG_MAX, "%s", dep->name);

		__entry->maxpacket = dep->endpoint.maxpacket;

		__entry->maxpacket_limit = dep->endpoint.maxpacket_limit;

		__entry->max_streams = dep->endpoint.max_streams;

		__entry->maxburst = dep->endpoint.maxburst;

		__entry->flags = dep->flags;

		__entry->direction = dep->direction;

		__entry->trb_enqueue = dep->trb_enqueue;

		__entry->trb_dequeue = dep->trb_dequeue;

	),

	TP_printk("%s: mps %d/%d streams %d burst %d ring %d/%d flags %c:%c%c%c%c%c:%c:%c",

		__get_str(name), __entry->maxpacket,

		__entry->maxpacket_limit, __entry->max_streams,

		__entry->maxburst, __entry->trb_enqueue,

		__entry->trb_dequeue,

		__entry->flags & DWC3_EP_ENABLED ? 'E' : 'e',

		__entry->flags & DWC3_EP_STALL ? 'S' : 's',

		__entry->flags & DWC3_EP_WEDGE ? 'W' : 'w',

		__entry->flags & DWC3_EP_BUSY ? 'B' : 'b',

		__entry->flags & DWC3_EP_PENDING_REQUEST ? 'P' : 'p',

		__entry->flags & DWC3_EP_MISSED_ISOC ? 'M' : 'm',

		__entry->flags & DWC3_EP_END_TRANSFER_PENDING ? 'E' : 'e',

		__entry->direction ? '<' : '>'

	)

);



DEFINE_EVENT(dwc3_log_ep, dwc3_gadget_ep_enable,

	TP_PROTO(struct dwc3_ep *dep),

	TP_ARGS(dep)

);



DEFINE_EVENT(dwc3_log_ep, dwc3_gadget_ep_disable,

	TP_PROTO(struct dwc3_ep *dep),

	TP_ARGS(dep)

);



#endif /* __DWC3_TRACE_H */



/* this part has to be here */