 2c4cbe6e5a
			
		
	
	
	2c4cbe6e5a
	
	
	
		
			
			When we're debugging hard-to-reproduce and time-sensitive use cases, printk() poses too much overhead. That's when the kernel's tracing infrastructure comes into play. This patch implements a few initial tracepoints for the dwc3 driver. More traces can be added as necessary in order to ease the task of debugging dwc3. Reviewed-by: Paul Zimmerman <paulz@synopsys.com> Signed-off-by: Felipe Balbi <balbi@ti.com>
		
			
				
	
	
		
			220 lines
		
	
	
	
		
			5.3 KiB
			
		
	
	
	
		
			C
		
	
	
	
	
	
			
		
		
	
	
			220 lines
		
	
	
	
		
			5.3 KiB
			
		
	
	
	
		
			C
		
	
	
	
	
	
| /**
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|  * trace.h - DesignWare USB3 DRD Controller Trace Support
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|  *
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|  * Copyright (C) 2014 Texas Instruments Incorporated - http://www.ti.com
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|  *
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|  * Author: Felipe Balbi <balbi@ti.com>
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|  *
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|  * This program is free software: you can redistribute it and/or modify
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|  * it under the terms of the GNU General Public License version 2  of
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|  * the License as published by the Free Software Foundation.
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|  *
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|  * This program is distributed in the hope that it will be useful,
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|  * but WITHOUT ANY WARRANTY; without even the implied warranty of
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|  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
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|  * GNU General Public License for more details.
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|  */
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| 
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| #undef TRACE_SYSTEM
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| #define TRACE_SYSTEM dwc3
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| 
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| #if !defined(__DWC3_TRACE_H) || defined(TRACE_HEADER_MULTI_READ)
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| #define __DWC3_TRACE_H
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| 
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| #include <linux/types.h>
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| #include <linux/tracepoint.h>
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| #include <asm/byteorder.h>
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| #include "core.h"
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| #include "debug.h"
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| 
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| DECLARE_EVENT_CLASS(dwc3_log_msg,
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| 	TP_PROTO(struct va_format *vaf),
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| 	TP_ARGS(vaf),
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| 	TP_STRUCT__entry(__dynamic_array(char, msg, DWC3_MSG_MAX)),
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| 	TP_fast_assign(
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| 		vsnprintf(__get_str(msg), DWC3_MSG_MAX, vaf->fmt, *vaf->va);
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| 	),
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| 	TP_printk("%s", __get_str(msg))
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| );
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| 
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| DEFINE_EVENT(dwc3_log_msg, dwc3_readl,
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| 	TP_PROTO(struct va_format *vaf),
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| 	TP_ARGS(vaf)
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| );
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| 
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| DEFINE_EVENT(dwc3_log_msg, dwc3_writel,
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| 	TP_PROTO(struct va_format *vaf),
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| 	TP_ARGS(vaf)
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| );
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| 
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| DEFINE_EVENT(dwc3_log_msg, dwc3_ep0,
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| 	TP_PROTO(struct va_format *vaf),
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| 	TP_ARGS(vaf)
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| );
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| 
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| DECLARE_EVENT_CLASS(dwc3_log_event,
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| 	TP_PROTO(u32 event),
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| 	TP_ARGS(event),
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| 	TP_STRUCT__entry(
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| 		__field(u32, event)
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| 	),
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| 	TP_fast_assign(
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| 		__entry->event = event;
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| 	),
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| 	TP_printk("event %08x\n", __entry->event)
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| );
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| 
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| DEFINE_EVENT(dwc3_log_event, dwc3_event,
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| 	TP_PROTO(u32 event),
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| 	TP_ARGS(event)
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| );
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| 
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| DECLARE_EVENT_CLASS(dwc3_log_ctrl,
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| 	TP_PROTO(struct usb_ctrlrequest *ctrl),
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| 	TP_ARGS(ctrl),
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| 	TP_STRUCT__entry(
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| 		__field(struct usb_ctrlrequest *, ctrl)
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| 	),
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| 	TP_fast_assign(
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| 		__entry->ctrl = ctrl;
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| 	),
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| 	TP_printk("bRequestType %02x bRequest %02x wValue %04x wIndex %04x wLength %d",
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| 		__entry->ctrl->bRequestType, __entry->ctrl->bRequest,
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| 		le16_to_cpu(__entry->ctrl->wValue), le16_to_cpu(__entry->ctrl->wIndex),
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| 		le16_to_cpu(__entry->ctrl->wLength)
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| 	)
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| );
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| 
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| DEFINE_EVENT(dwc3_log_ctrl, dwc3_ctrl_req,
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| 	TP_PROTO(struct usb_ctrlrequest *ctrl),
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| 	TP_ARGS(ctrl)
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| );
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| 
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| DECLARE_EVENT_CLASS(dwc3_log_request,
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| 	TP_PROTO(struct dwc3_request *req),
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| 	TP_ARGS(req),
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| 	TP_STRUCT__entry(
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| 		__field(struct dwc3_request *, req)
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| 	),
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| 	TP_fast_assign(
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| 		__entry->req = req;
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| 	),
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| 	TP_printk("%s: req %p length %u/%u ==> %d",
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| 		__entry->req->dep->name, __entry->req,
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| 		__entry->req->request.actual, __entry->req->request.length,
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| 		__entry->req->request.status
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| 	)
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| );
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| 
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| DEFINE_EVENT(dwc3_log_request, dwc3_alloc_request,
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| 	TP_PROTO(struct dwc3_request *req),
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| 	TP_ARGS(req)
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| );
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| 
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| DEFINE_EVENT(dwc3_log_request, dwc3_free_request,
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| 	TP_PROTO(struct dwc3_request *req),
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| 	TP_ARGS(req)
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| );
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| 
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| DEFINE_EVENT(dwc3_log_request, dwc3_ep_queue,
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| 	TP_PROTO(struct dwc3_request *req),
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| 	TP_ARGS(req)
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| );
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| 
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| DEFINE_EVENT(dwc3_log_request, dwc3_ep_dequeue,
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| 	TP_PROTO(struct dwc3_request *req),
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| 	TP_ARGS(req)
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| );
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| 
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| DEFINE_EVENT(dwc3_log_request, dwc3_gadget_giveback,
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| 	TP_PROTO(struct dwc3_request *req),
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| 	TP_ARGS(req)
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| );
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| 
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| DECLARE_EVENT_CLASS(dwc3_log_generic_cmd,
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| 	TP_PROTO(unsigned int cmd, u32 param),
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| 	TP_ARGS(cmd, param),
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| 	TP_STRUCT__entry(
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| 		__field(unsigned int, cmd)
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| 		__field(u32, param)
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| 	),
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| 	TP_fast_assign(
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| 		__entry->cmd = cmd;
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| 		__entry->param = param;
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| 	),
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| 	TP_printk("cmd '%s' [%d] param %08x\n",
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| 		dwc3_gadget_generic_cmd_string(__entry->cmd),
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| 		__entry->cmd, __entry->param
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| 	)
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| );
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| 
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| DEFINE_EVENT(dwc3_log_generic_cmd, dwc3_gadget_generic_cmd,
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| 	TP_PROTO(unsigned int cmd, u32 param),
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| 	TP_ARGS(cmd, param)
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| );
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| 
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| DECLARE_EVENT_CLASS(dwc3_log_gadget_ep_cmd,
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| 	TP_PROTO(struct dwc3_ep *dep, unsigned int cmd,
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| 		struct dwc3_gadget_ep_cmd_params *params),
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| 	TP_ARGS(dep, cmd, params),
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| 	TP_STRUCT__entry(
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| 		__field(struct dwc3_ep *, dep)
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| 		__field(unsigned int, cmd)
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| 		__field(struct dwc3_gadget_ep_cmd_params *, params)
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| 	),
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| 	TP_fast_assign(
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| 		__entry->dep = dep;
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| 		__entry->cmd = cmd;
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| 		__entry->params = params;
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| 	),
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| 	TP_printk("%s: cmd '%s' [%d] params %08x %08x %08x\n",
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| 		__entry->dep->name, dwc3_gadget_ep_cmd_string(__entry->cmd),
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| 		__entry->cmd, __entry->params->param0,
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| 		__entry->params->param1, __entry->params->param2
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| 	)
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| );
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| 
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| DEFINE_EVENT(dwc3_log_gadget_ep_cmd, dwc3_gadget_ep_cmd,
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| 	TP_PROTO(struct dwc3_ep *dep, unsigned int cmd,
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| 		struct dwc3_gadget_ep_cmd_params *params),
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| 	TP_ARGS(dep, cmd, params)
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| );
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| 
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| DECLARE_EVENT_CLASS(dwc3_log_trb,
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| 	TP_PROTO(struct dwc3_ep *dep, struct dwc3_trb *trb),
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| 	TP_ARGS(dep, trb),
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| 	TP_STRUCT__entry(
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| 		__field(struct dwc3_ep *, dep)
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| 		__field(struct dwc3_trb *, trb)
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| 	),
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| 	TP_fast_assign(
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| 		__entry->dep = dep;
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| 		__entry->trb = trb;
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| 	),
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| 	TP_printk("%s: trb %p bph %08x bpl %08x size %08x ctrl %08x\n",
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| 		__entry->dep->name, __entry->trb, __entry->trb->bph,
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| 		__entry->trb->bpl, __entry->trb->size, __entry->trb->ctrl
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| 	)
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| );
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| 
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| DEFINE_EVENT(dwc3_log_trb, dwc3_prepare_trb,
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| 	TP_PROTO(struct dwc3_ep *dep, struct dwc3_trb *trb),
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| 	TP_ARGS(dep, trb)
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| );
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| 
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| DEFINE_EVENT(dwc3_log_trb, dwc3_complete_trb,
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| 	TP_PROTO(struct dwc3_ep *dep, struct dwc3_trb *trb),
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| 	TP_ARGS(dep, trb)
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| );
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| 
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| #endif /* __DWC3_TRACE_H */
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| 
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| /* this part has to be here */
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| 
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| #undef TRACE_INCLUDE_PATH
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| #define TRACE_INCLUDE_PATH .
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| 
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| #undef TRACE_INCLUDE_FILE
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| #define TRACE_INCLUDE_FILE trace
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| 
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| #include <trace/define_trace.h>
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