From 22f2c619a116f120fe57de1225cfe7fdeb0b12d2 Mon Sep 17 00:00:00 2001 From: Janusz Dziedzic Date: Fri, 20 May 2016 10:37:13 +0200 Subject: [PATCH] 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 Signed-off-by: Felipe Balbi --- drivers/usb/dwc3/trace.h | 40 ++++++++++++++++++++++++++++++++++++++-- 1 file changed, 38 insertions(+), 2 deletions(-) diff --git a/drivers/usb/dwc3/trace.h b/drivers/usb/dwc3/trace.h index 3ac7252f4427..8cbe1fc9c8d4 100644 --- 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; }) ) ); -- 2.20.1