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>

Author: prashk-oss

drivers/usb/dwc3/core.c

@@ -158,7 +158,7 @@ void dwc3_set_prtcap(struct dwc3 *dwc, u32 mode, bool ignore_susphy)
 	dwc3_writel(dwc, DWC3_GCTL, reg);
 
 	dwc->current_dr_role = mode;
-	trace_dwc3_set_prtcap(mode);
+	trace_dwc3_set_prtcap(dwc, mode);
 }
 EXPORT_SYMBOL_GPL(dwc3_set_prtcap);
 

drivers/usb/dwc3/ep0.c

@@ -833,7 +833,7 @@ static void dwc3_ep0_inspect_setup(struct dwc3 *dwc,
 	if (!dwc->gadget_driver || !dwc->softconnect || !dwc->connected)
 		goto out;
 
-	trace_dwc3_ctrl_req(ctrl);
+	trace_dwc3_ctrl_req(dwc, ctrl);
 
 	len = le16_to_cpu(ctrl->wLength);
 	if (!len) {

drivers/usb/dwc3/gadget.c

@@ -278,7 +278,7 @@ int dwc3_send_gadget_generic_command(struct dwc3 *dwc, unsigned int cmd,
 		status = -ETIMEDOUT;
 	}
 
-	trace_dwc3_gadget_generic_cmd(cmd, param, status);
+	trace_dwc3_gadget_generic_cmd(dwc, cmd, param, status);
 
 	return ret;
 }

drivers/usb/dwc3/io.h

@@ -33,7 +33,7 @@ static inline u32 dwc3_readl(struct dwc3 *dwc, u32 offset)
 	 * documentation, so we revert it back to the proper addresses, the
 	 * same way they are described on SNPS documentation
 	 */
-	trace_dwc3_readl(base - DWC3_GLOBALS_REGS_START, offset, value);
+	trace_dwc3_readl(dwc, base - DWC3_GLOBALS_REGS_START, offset, value);
 
 	return value;
 }
@@ -54,7 +54,7 @@ static inline void dwc3_writel(struct dwc3 *dwc, u32 offset, u32 value)
 	 * documentation, so we revert it back to the proper addresses, the
 	 * same way they are described on SNPS documentation
 	 */
-	trace_dwc3_writel(base - DWC3_GLOBALS_REGS_START, offset, value);
+	trace_dwc3_writel(dwc, base - DWC3_GLOBALS_REGS_START, offset, value);
 }
 
 #endif /* __DRIVERS_USB_DWC3_IO_H */

drivers/usb/dwc3/trace.h

@@ -20,63 +20,70 @@
 #include "debug.h"
 
 DECLARE_EVENT_CLASS(dwc3_log_set_prtcap,
-	TP_PROTO(u32 mode),
-	TP_ARGS(mode),
+	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("mode %s", dwc3_mode_string(__entry->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(u32 mode),
-	TP_ARGS(mode)
+	TP_PROTO(struct dwc3 *dwc, u32 mode),
+	TP_ARGS(dwc, mode)
 );
 
 DECLARE_EVENT_CLASS(dwc3_log_io,
-	TP_PROTO(void *base, u32 offset, u32 value),
-	TP_ARGS(base, offset, value),
+	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("addr %p offset %04x value %08x",
+	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(void __iomem *base, u32 offset, u32 value),
-	TP_ARGS(base, offset, value)
+	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(void __iomem *base, u32 offset, u32 value),
-	TP_ARGS(base, offset, value)
+	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("event (%08x): %s", __entry->event,
+	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))
 );
@@ -87,38 +94,42 @@ DEFINE_EVENT(dwc3_log_event, dwc3_event,
 );
 
 DECLARE_EVENT_CLASS(dwc3_log_ctrl,
-	TP_PROTO(struct usb_ctrlrequest *ctrl),
-	TP_ARGS(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("%s", usb_decode_ctrl(__get_buf(DWC3_MSG_MAX), DWC3_MSG_MAX,
+	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 usb_ctrlrequest *ctrl),
-	TP_ARGS(ctrl)
+	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)
@@ -129,7 +140,7 @@ DECLARE_EVENT_CLASS(dwc3_log_request,
 		__field(int, no_interrupt)
 	),
 	TP_fast_assign(
-		__assign_str(name);
+		__entry->base_address = req->dep->dwc->xhci_resources[0].start;
 		__entry->req = req;
 		__entry->actual = req->request.actual;
 		__entry->length = req->request.length;
@@ -138,8 +149,10 @@ DECLARE_EVENT_CLASS(dwc3_log_request,
 		__entry->short_not_ok = req->request.short_not_ok;
 		__entry->no_interrupt = req->request.no_interrupt;
 	),
-	TP_printk("%s: req %p length %u/%u %s%s%s ==> %d",
-		__get_str(name), __entry->req, __entry->actual, __entry->length,
+	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",
@@ -173,35 +186,38 @@ DEFINE_EVENT(dwc3_log_request, dwc3_gadget_giveback,
 );
 
 DECLARE_EVENT_CLASS(dwc3_log_generic_cmd,
-	TP_PROTO(unsigned int cmd, u32 param, int status),
-	TP_ARGS(cmd, param, status),
+	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("cmd '%s' [%x] param %08x --> status: %s",
-		dwc3_gadget_generic_cmd_string(__entry->cmd),
+	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(unsigned int cmd, u32 param, int status),
-	TP_ARGS(cmd, param, status)
+	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)
@@ -210,15 +226,17 @@ DECLARE_EVENT_CLASS(dwc3_log_gadget_ep_cmd,
 		__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("%s: cmd '%s' [%x] params %08x %08x %08x --> status: %s",
-		__get_str(name), dwc3_gadget_ep_cmd_string(__entry->cmd),
+	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)
@@ -235,6 +253,7 @@ 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)
@@ -246,6 +265,7 @@ DECLARE_EVENT_CLASS(dwc3_log_trb,
 		__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;
@@ -256,8 +276,8 @@ DECLARE_EVENT_CLASS(dwc3_log_trb,
 		__entry->enqueue = dep->trb_enqueue;
 		__entry->dequeue = dep->trb_dequeue;
 	),
-	TP_printk("%s: trb %p (E%d:D%d) buf %08x%08x size %s%d ctrl %08x sofn %08x (%c%c%c%c:%c%c:%s)",
-		__get_str(name), __entry->trb, __entry->enqueue,
+	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;
@@ -307,6 +327,7 @@ 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)
@@ -318,6 +339,7 @@ DECLARE_EVENT_CLASS(dwc3_log_ep,
 		__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;
@@ -328,8 +350,8 @@ DECLARE_EVENT_CLASS(dwc3_log_ep,
 		__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",
-		__get_str(name), __entry->maxpacket,
+	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,