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usb: chipidea: add tracepoint support for udc

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Add basic tracepoint support for udc driver.

Reviewed-by: Jun Li <jun.li@nxp.com>
Signed-off-by: Peter Chen <peter.chen@nxp.com>
This commit is contained in:
Peter Chen 2020-03-25 15:52:29 +08:00
parent 1bc514dfd1
commit b4c5d446a6
No known key found for this signature in database
GPG Key ID: 4859298150D671BB
4 changed files with 127 additions and 3 deletions
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5
drivers/usb/chipidea/Makefile
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@ -1,8 +1,11 @@
# 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

23
drivers/usb/chipidea/trace.c Normal file
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@ -0,0 +1,23 @@
// 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);
}

92
drivers/usb/chipidea/trace.h Normal file
View File

@ -0,0 +1,92 @@
/* 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>

10
drivers/usb/chipidea/udc.c
View File

@ -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);