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linux/drivers/usb/dwc3/trace.h
Prashanth K 0a06917432 usb: dwc3: Log dwc3 address in traces 
When multiple DWC3 controllers are being used, trace events from
different instances get mixed up making debugging difficult as
there's no way to distinguish which instance generated the trace.

Use the register base address of dwc3 controller and append it to
trace events, so that the source instance is clearly identifiable.

Example trace output,
before ->  dwc3_event: event (00000101): Reset [U0]
after  ->  dwc3_event: 0x000000000a600000: event (00000101): Reset [U0]

Signed-off-by: Prashanth K <prashanth.k@oss.qualcomm.com>
Acked-by: Thinh Nguyen <Thinh.Nguyen@synopsys.com>
Link: https://patch.msgid.link/20260122105000.4126769-1-prashanth.k@oss.qualcomm.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2026-01-27 15:52:45 +01:00

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/* SPDX-License-Identifier: GPL-2.0 */
/*
* trace.h - DesignWare USB3 DRD Controller Trace Support
*
* Copyright (C) 2014 Texas Instruments Incorporated - https://www.ti.com
*
* Author: Felipe Balbi <balbi@ti.com>
*/
#undef TRACE_SYSTEM
#define TRACE_SYSTEM dwc3
#if !defined(__DWC3_TRACE_H) || defined(TRACE_HEADER_MULTI_READ)
#define __DWC3_TRACE_H
#include <linux/types.h>
#include <linux/tracepoint.h>
#include <asm/byteorder.h>
#include "core.h"
#include "debug.h"
DECLARE_EVENT_CLASS(dwc3_log_set_prtcap,
TP_PROTO(struct dwc3 *dwc, u32 mode),
TP_ARGS(dwc, mode),
TP_STRUCT__entry(
__field(phys_addr_t, base_address)
__field(u32, mode)
),
TP_fast_assign(
__entry->base_address = dwc->xhci_resources[0].start;
__entry->mode = mode;
),
TP_printk("%pa: mode %s", &__entry->base_address, dwc3_mode_string(__entry->mode))
);
DEFINE_EVENT(dwc3_log_set_prtcap, dwc3_set_prtcap,
TP_PROTO(struct dwc3 *dwc, u32 mode),
TP_ARGS(dwc, mode)
);
DECLARE_EVENT_CLASS(dwc3_log_io,
TP_PROTO(struct dwc3 *dwc, void *base, u32 offset, u32 value),
TP_ARGS(dwc, base, offset, value),
TP_STRUCT__entry(
__field(phys_addr_t, base_address)
__field(void *, base)
__field(u32, offset)
__field(u32, value)
),
TP_fast_assign(
__entry->base_address = dwc->xhci_resources[0].start;
__entry->base = base;
__entry->offset = offset;
__entry->value = value;
),
TP_printk("%pa: addr %p offset %04x value %08x",
&__entry->base_address,
__entry->base + __entry->offset,
__entry->offset,
__entry->value)
);
DEFINE_EVENT(dwc3_log_io, dwc3_readl,
TP_PROTO(struct dwc3 *dwc, void __iomem *base, u32 offset, u32 value),
TP_ARGS(dwc, base, offset, value)
);
DEFINE_EVENT(dwc3_log_io, dwc3_writel,
TP_PROTO(struct dwc3 *dwc, void __iomem *base, u32 offset, u32 value),
TP_ARGS(dwc, base, offset, value)
);
DECLARE_EVENT_CLASS(dwc3_log_event,
TP_PROTO(u32 event, struct dwc3 *dwc),
TP_ARGS(event, dwc),
TP_STRUCT__entry(
__field(phys_addr_t, base_address)
__field(u32, event)
__field(u32, ep0state)
),
TP_fast_assign(
__entry->base_address = dwc->xhci_resources[0].start;
__entry->event = event;
__entry->ep0state = dwc->ep0state;
),
TP_printk("%pa: event (%08x): %s", &__entry->base_address, __entry->event,
dwc3_decode_event(__get_buf(DWC3_MSG_MAX), DWC3_MSG_MAX,
__entry->event, __entry->ep0state))
);
DEFINE_EVENT(dwc3_log_event, dwc3_event,
TP_PROTO(u32 event, struct dwc3 *dwc),
TP_ARGS(event, dwc)
);
DECLARE_EVENT_CLASS(dwc3_log_ctrl,
TP_PROTO(struct dwc3 *dwc, struct usb_ctrlrequest *ctrl),
TP_ARGS(dwc, ctrl),
TP_STRUCT__entry(
__field(phys_addr_t, base_address)
__field(__u8, bRequestType)
__field(__u8, bRequest)
__field(__u16, wValue)
__field(__u16, wIndex)
__field(__u16, wLength)
),
TP_fast_assign(
__entry->base_address = dwc->xhci_resources[0].start;
__entry->bRequestType = ctrl->bRequestType;
__entry->bRequest = ctrl->bRequest;
__entry->wValue = le16_to_cpu(ctrl->wValue);
__entry->wIndex = le16_to_cpu(ctrl->wIndex);
__entry->wLength = le16_to_cpu(ctrl->wLength);
),
TP_printk("%pa: %s", &__entry->base_address, usb_decode_ctrl(__get_buf(DWC3_MSG_MAX),
DWC3_MSG_MAX,
__entry->bRequestType,
__entry->bRequest, __entry->wValue,
__entry->wIndex, __entry->wLength)
)
);
DEFINE_EVENT(dwc3_log_ctrl, dwc3_ctrl_req,
TP_PROTO(struct dwc3 *dwc, struct usb_ctrlrequest *ctrl),
TP_ARGS(dwc, ctrl)
);
DECLARE_EVENT_CLASS(dwc3_log_request,
TP_PROTO(struct dwc3_request *req),
TP_ARGS(req),
TP_STRUCT__entry(
__field(phys_addr_t, base_address)
__string(name, req->dep->name)
__field(struct dwc3_request *, req)
__field(unsigned int, actual)
__field(unsigned int, length)
__field(int, status)
__field(int, zero)
__field(int, short_not_ok)
__field(int, no_interrupt)
),
TP_fast_assign(
__entry->base_address = req->dep->dwc->xhci_resources[0].start;
__entry->req = req;
__entry->actual = req->request.actual;
__entry->length = req->request.length;
__entry->status = req->request.status;
__entry->zero = req->request.zero;
__entry->short_not_ok = req->request.short_not_ok;
__entry->no_interrupt = req->request.no_interrupt;
),
TP_printk("%pa: %s: req %p length %u/%u %s%s%s ==> %d",
&__entry->base_address,
__get_str(name), __entry->req,
__entry->actual, __entry->length,
__entry->zero ? "Z" : "z",
__entry->short_not_ok ? "S" : "s",
__entry->no_interrupt ? "i" : "I",
__entry->status
)
);
DEFINE_EVENT(dwc3_log_request, dwc3_alloc_request,
TP_PROTO(struct dwc3_request *req),
TP_ARGS(req)
);
DEFINE_EVENT(dwc3_log_request, dwc3_free_request,
TP_PROTO(struct dwc3_request *req),
TP_ARGS(req)
);
DEFINE_EVENT(dwc3_log_request, dwc3_ep_queue,
TP_PROTO(struct dwc3_request *req),
TP_ARGS(req)
);
DEFINE_EVENT(dwc3_log_request, dwc3_ep_dequeue,
TP_PROTO(struct dwc3_request *req),
TP_ARGS(req)
);
DEFINE_EVENT(dwc3_log_request, dwc3_gadget_giveback,
TP_PROTO(struct dwc3_request *req),
TP_ARGS(req)
);
DECLARE_EVENT_CLASS(dwc3_log_generic_cmd,
TP_PROTO(struct dwc3 *dwc, unsigned int cmd, u32 param, int status),
TP_ARGS(dwc, cmd, param, status),
TP_STRUCT__entry(
__field(phys_addr_t, base_address)
__field(unsigned int, cmd)
__field(u32, param)
__field(int, status)
),
TP_fast_assign(
__entry->base_address = dwc->xhci_resources[0].start;
__entry->cmd = cmd;
__entry->param = param;
__entry->status = status;
),
TP_printk("%pa: cmd '%s' [%x] param %08x --> status: %s",
&__entry->base_address, dwc3_gadget_generic_cmd_string(__entry->cmd),
__entry->cmd, __entry->param,
dwc3_gadget_generic_cmd_status_string(__entry->status)
)
);
DEFINE_EVENT(dwc3_log_generic_cmd, dwc3_gadget_generic_cmd,
TP_PROTO(struct dwc3 *dwc, unsigned int cmd, u32 param, int status),
TP_ARGS(dwc, cmd, param, status)
);
DECLARE_EVENT_CLASS(dwc3_log_gadget_ep_cmd,
TP_PROTO(struct dwc3_ep *dep, unsigned int cmd,
struct dwc3_gadget_ep_cmd_params *params, int cmd_status),
TP_ARGS(dep, cmd, params, cmd_status),
TP_STRUCT__entry(
__field(phys_addr_t, base_address)
__string(name, dep->name)
__field(unsigned int, cmd)
__field(u32, param0)
__field(u32, param1)
__field(u32, param2)
__field(int, cmd_status)
),
TP_fast_assign(
__entry->base_address = dep->dwc->xhci_resources[0].start;
__assign_str(name);
__entry->cmd = cmd;
__entry->param0 = params->param0;
__entry->param1 = params->param1;
__entry->param2 = params->param2;
__entry->cmd_status = cmd_status;
),
TP_printk("%pa: %s: cmd '%s' [%x] params %08x %08x %08x --> status: %s",
&__entry->base_address, __get_str(name),
dwc3_gadget_ep_cmd_string(__entry->cmd),
__entry->cmd, __entry->param0,
__entry->param1, __entry->param2,
dwc3_ep_cmd_status_string(__entry->cmd_status)
)
);
DEFINE_EVENT(dwc3_log_gadget_ep_cmd, dwc3_gadget_ep_cmd,
TP_PROTO(struct dwc3_ep *dep, unsigned int cmd,
struct dwc3_gadget_ep_cmd_params *params, int cmd_status),
TP_ARGS(dep, cmd, params, cmd_status)
);
DECLARE_EVENT_CLASS(dwc3_log_trb,
TP_PROTO(struct dwc3_ep *dep, struct dwc3_trb *trb),
TP_ARGS(dep, trb),
TP_STRUCT__entry(
__field(phys_addr_t, base_address)
__string(name, dep->name)
__field(struct dwc3_trb *, trb)
__field(u32, bpl)
__field(u32, bph)
__field(u32, size)
__field(u32, ctrl)
__field(u32, type)
__field(u32, enqueue)
__field(u32, dequeue)
),
TP_fast_assign(
__entry->base_address = dep->dwc->xhci_resources[0].start;
__assign_str(name);
__entry->trb = trb;
__entry->bpl = trb->bpl;
__entry->bph = trb->bph;
__entry->size = trb->size;
__entry->ctrl = trb->ctrl;
__entry->type = usb_endpoint_type(dep->endpoint.desc);
__entry->enqueue = dep->trb_enqueue;
__entry->dequeue = dep->trb_dequeue;
),
TP_printk("%pa: %s: trb %p (E%d:D%d) buf %08x%08x size %s%d ctrl %08x sofn %08x (%c%c%c%c:%c%c:%s)",
&__entry->base_address, __get_str(name), __entry->trb, __entry->enqueue,
__entry->dequeue, __entry->bph, __entry->bpl,
({char *s;
int pcm = ((__entry->size >> 24) & 3) + 1;
switch (__entry->type) {
case USB_ENDPOINT_XFER_INT:
case USB_ENDPOINT_XFER_ISOC:
switch (pcm) {
case 1:
s = "1x ";
break;
case 2:
s = "2x ";
break;
case 3:
default:
s = "3x ";
break;
}
break;
default:
s = "";
} s; }),
DWC3_TRB_SIZE_LENGTH(__entry->size), __entry->ctrl,
DWC3_TRB_CTRL_GET_SID_SOFN(__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',
dwc3_trb_type_string(DWC3_TRBCTL_TYPE(__entry->ctrl))
)
);
DEFINE_EVENT(dwc3_log_trb, dwc3_prepare_trb,
TP_PROTO(struct dwc3_ep *dep, struct dwc3_trb *trb),
TP_ARGS(dep, trb)
);
DEFINE_EVENT(dwc3_log_trb, dwc3_complete_trb,
TP_PROTO(struct dwc3_ep *dep, struct dwc3_trb *trb),
TP_ARGS(dep, trb)
);
DECLARE_EVENT_CLASS(dwc3_log_ep,
TP_PROTO(struct dwc3_ep *dep),
TP_ARGS(dep),
TP_STRUCT__entry(
__field(phys_addr_t, base_address)
__string(name, dep->name)
__field(unsigned int, maxpacket)
__field(unsigned int, maxpacket_limit)
__field(unsigned int, max_streams)
__field(unsigned int, maxburst)
__field(unsigned int, flags)
__field(unsigned int, direction)
__field(u8, trb_enqueue)
__field(u8, trb_dequeue)
),
TP_fast_assign(
__entry->base_address = dep->dwc->xhci_resources[0].start;
__assign_str(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("%pa: %s: mps %d/%d streams %d burst %d ring %d/%d flags %c:%c%c%c%c:%c",
&__entry->base_address, __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_TRANSFER_STARTED ? 'B' : 'b',
__entry->flags & DWC3_EP_PENDING_REQUEST ? 'P' : 'p',
__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 */
#undef TRACE_INCLUDE_PATH
#define TRACE_INCLUDE_PATH .
#undef TRACE_INCLUDE_FILE
#define TRACE_INCLUDE_FILE trace
#include <trace/define_trace.h>
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