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: Janusz Dziedzic <januszx.dziedzic@linux.intel.com>
Signed-off-by: Felipe Balbi <felipe.balbi@linux.intel.com>

diff --git a/drivers/usb/dwc3/trace.h b/drivers/usb/dwc3/trace.h
index 3ac7252f44275e7bb9287f92c5fc946d7063967f..8cbe1fc9c8d449964756be12a7212cc10782b81b 100644 (file)
--- a/drivers/usb/dwc3/trace.h
+++ b/drivers/usb/dwc3/trace.h
@@ -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; })
        )
 );