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Commit 22f2c619 authored by Janusz Dziedzic's avatar Janusz Dziedzic Committed by Felipe Balbi
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usb: dwc3: trace: pretty-print TRB's ctrl field 



Improve trb tracing by showing trb flags, interrupts
trb type.

trb flags:
- h - hardware owner of descriptor
- l - last TRB
- c - chain buffers
- s - continue on short packet

interrupt flags:
- s - interrupt on short packet
- c - interrupt on complete

Capital letter means that bit is set, while
lowercase letter means bit is cleared.

Signed-off-by: default avatarJanusz Dziedzic <januszx.dziedzic@linux.intel.com>
Signed-off-by: default avatarFelipe Balbi <felipe.balbi@linux.intel.com>
parent 74674cbf

drivers/usb/dwc3/trace.h

+38 −2
Original line number Diff line number Diff line
@@ -237,9 +237,45 @@ DECLARE_EVENT_CLASS(dwc3_log_trb, 
		__entry->size = trb->size;

		__entry->ctrl = trb->ctrl;

	),

	TP_printk("%s: trb %p bph %08x bpl %08x size %08x ctrl %08x",

	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,

		__entry->size, __entry->ctrl

		__entry->size, __entry->ctrl,

		__entry->ctrl & DWC3_TRB_CTRL_HWO ? 'H' : 'h',

		__entry->ctrl & DWC3_TRB_CTRL_LST ? 'L' : 'l',

		__entry->ctrl & DWC3_TRB_CTRL_CHN ? 'C' : 'c',

		__entry->ctrl & DWC3_TRB_CTRL_CSP ? 'S' : 's',

		__entry->ctrl & DWC3_TRB_CTRL_ISP_IMI ? 'S' : 's',

		__entry->ctrl & DWC3_TRB_CTRL_IOC ? 'C' : 'c',

		({char *s;

		switch (__entry->ctrl & 0x3f0) {

		case DWC3_TRBCTL_NORMAL:

			s = "normal";

			break;

		case DWC3_TRBCTL_CONTROL_SETUP:

			s = "setup";

			break;

		case DWC3_TRBCTL_CONTROL_STATUS2:

			s = "status2";

			break;

		case DWC3_TRBCTL_CONTROL_STATUS3:

			s = "status3";

			break;

		case DWC3_TRBCTL_CONTROL_DATA:

			s = "data";

			break;

		case DWC3_TRBCTL_ISOCHRONOUS_FIRST:

			s = "isoc-first";

			break;

		case DWC3_TRBCTL_ISOCHRONOUS:

			s = "isoc";

			break;

		case DWC3_TRBCTL_LINK_TRB:

			s = "link";

			break;

		default:

			s = "UNKNOWN";

			break;

		} s; })

	)

);