Unverified Commit b4c5d446 authored by Peter Chen's avatar Peter Chen
Browse files

usb: chipidea: add tracepoint support for udc 



Add basic tracepoint support for udc driver.

Reviewed-by: default avatarJun Li <jun.li@nxp.com>
Signed-off-by: default avatarPeter Chen <peter.chen@nxp.com>
parent 1bc514df

drivers/usb/chipidea/Makefile

+4 −1
Original line number Diff line number Diff line 
# SPDX-License-Identifier: GPL-2.0



# define_trace.h needs to know how to find our header

CFLAGS_trace.o			:= -I$(src)

obj-$(CONFIG_USB_CHIPIDEA)		+= ci_hdrc.o



ci_hdrc-y				:= core.o otg.o debug.o ulpi.o

ci_hdrc-$(CONFIG_USB_CHIPIDEA_UDC)	+= udc.o

ci_hdrc-$(CONFIG_USB_CHIPIDEA_UDC)	+= udc.o trace.o

ci_hdrc-$(CONFIG_USB_CHIPIDEA_HOST)	+= host.o

ci_hdrc-$(CONFIG_USB_OTG_FSM)		+= otg_fsm.o

drivers/usb/chipidea/trace.c

0 → 100644
+23 −0
Original line number Diff line number Diff line 
// SPDX-License-Identifier: GPL-2.0

/*

 * Chipidea Device Mode Trace Support

 *

 * Copyright (C) 2020 NXP

 *

 * Author: Peter Chen <peter.chen@nxp.com>

 */



#define CREATE_TRACE_POINTS

#include "trace.h"



void ci_log(struct ci_hdrc *ci, const char *fmt, ...)

{

	struct va_format vaf;

	va_list args;



	va_start(args, fmt);

	vaf.fmt = fmt;

	vaf.va = &args;

	trace_ci_log(ci, &vaf);

	va_end(args);

}

drivers/usb/chipidea/trace.h

0 → 100644
+92 −0
Original line number Diff line number Diff line 
/* SPDX-License-Identifier: GPL-2.0 */

/*

 * Trace support header file for device mode

 *

 * Copyright (C) 2020 NXP

 *

 * Author: Peter Chen <peter.chen@nxp.com>

 */



#undef TRACE_SYSTEM

#define TRACE_SYSTEM chipidea



#if !defined(__LINUX_CHIPIDEA_TRACE) || defined(TRACE_HEADER_MULTI_READ)

#define __LINUX_CHIPIDEA_TRACE



#include <linux/types.h>

#include <linux/tracepoint.h>

#include <linux/usb/chipidea.h>

#include "ci.h"

#include "udc.h"



#define CHIPIDEA_MSG_MAX	500



void ci_log(struct ci_hdrc *ci, const char *fmt, ...);



TRACE_EVENT(ci_log,

	TP_PROTO(struct ci_hdrc *ci, struct va_format *vaf),

	TP_ARGS(ci, vaf),

	TP_STRUCT__entry(

		__string(name, dev_name(ci->dev))

		__dynamic_array(char, msg, CHIPIDEA_MSG_MAX)

	),

	TP_fast_assign(

		__assign_str(name, dev_name(ci->dev));

		vsnprintf(__get_str(msg), CHIPIDEA_MSG_MAX, vaf->fmt, *vaf->va);

	),

	TP_printk("%s: %s", __get_str(name), __get_str(msg))

);



DECLARE_EVENT_CLASS(ci_log_trb,

	TP_PROTO(struct ci_hw_ep *hwep, struct ci_hw_req *hwreq, struct td_node *td),

	TP_ARGS(hwep, hwreq, td),

	TP_STRUCT__entry(

		__string(name, hwep->name)

		__field(struct td_node *, td)

		__field(struct usb_request *, req)

		__field(dma_addr_t, dma)

		__field(s32, td_remaining_size)

		__field(u32, next)

		__field(u32, token)

		__field(u32, type)

	),

	TP_fast_assign(

		__assign_str(name, hwep->name);

		__entry->req = &hwreq->req;

		__entry->td = td;

		__entry->dma = td->dma;

		__entry->td_remaining_size = td->td_remaining_size;

		__entry->next = td->ptr->next;

		__entry->token = td->ptr->token;

		__entry->type = usb_endpoint_type(hwep->ep.desc);

	),

	TP_printk("%s: req: %p, td: %p, td_dma_address: %pad, remaining_size: %d, "

	       "next: %x, total bytes: %d, status: %lx",

		__get_str(name), __entry->req, __entry->td, &__entry->dma,

		__entry->td_remaining_size, __entry->next,

		(int)((__entry->token & TD_TOTAL_BYTES) >> __ffs(TD_TOTAL_BYTES)),

		__entry->token & TD_STATUS

	)

);



DEFINE_EVENT(ci_log_trb, ci_prepare_td,

	TP_PROTO(struct ci_hw_ep *hwep, struct ci_hw_req *hwreq, struct td_node *td),

	TP_ARGS(hwep, hwreq, td)

);



DEFINE_EVENT(ci_log_trb, ci_complete_td,

	TP_PROTO(struct ci_hw_ep *hwep, struct ci_hw_req *hwreq, struct td_node *td),

	TP_ARGS(hwep, hwreq, td)

);



#endif /* __LINUX_CHIPIDEA_TRACE */



/* this part must be outside header guard */



#undef TRACE_INCLUDE_PATH

#define TRACE_INCLUDE_PATH .



#undef TRACE_INCLUDE_FILE

#define TRACE_INCLUDE_FILE trace



#include <trace/define_trace.h>

drivers/usb/chipidea/udc.c

+8 −2
Original line number Diff line number Diff line
@@ -26,6 +26,7 @@ 
#include "bits.h"

#include "otg.h"

#include "otg_fsm.h"

#include "trace.h"



/* control endpoint description */

static const struct usb_endpoint_descriptor
@@ -569,14 +570,18 @@ static int _hardware_enqueue(struct ci_hw_ep *hwep, struct ci_hw_req *hwreq) 
	if (ret)

		return ret;



	firstnode = list_first_entry(&hwreq->tds, struct td_node, td);



	lastnode = list_entry(hwreq->tds.prev,

		struct td_node, td);



	lastnode->ptr->next = cpu_to_le32(TD_TERMINATE);

	if (!hwreq->req.no_interrupt)

		lastnode->ptr->token |= cpu_to_le32(TD_IOC);



	list_for_each_entry_safe(firstnode, lastnode, &hwreq->tds, td)

		trace_ci_prepare_td(hwep, hwreq, firstnode);



	firstnode = list_first_entry(&hwreq->tds, struct td_node, td);



	wmb();



	hwreq->req.actual = 0;
@@ -671,6 +676,7 @@ static int _hardware_dequeue(struct ci_hw_ep *hwep, struct ci_hw_req *hwreq) 


	list_for_each_entry_safe(node, tmpnode, &hwreq->tds, td) {

		tmptoken = le32_to_cpu(node->ptr->token);

		trace_ci_complete_td(hwep, hwreq, node);

		if ((TD_STATUS_ACTIVE & tmptoken) != 0) {

			int n = hw_ep_bit(hwep->num, hwep->dir);