/* SPDX-License-Identifier: GPL-2.0-or-later */
/* I2C message transfer tracepoints
 *
 * Copyright (C) 2013 Red Hat, Inc. All Rights Reserved.
 * Written by David Howells (dhowells@redhat.com)
 */
#undef TRACE_SYSTEM
#define TRACE_SYSTEM i2c

#if !defined(_TRACE_I2C_H) || defined(TRACE_HEADER_MULTI_READ)
#define _TRACE_I2C_H

#include <linux/i2c.h>
#include <linux/tracepoint.h>

/*
 * drivers/i2c/i2c-core-base.c
 */
extern int i2c_transfer_trace_reg(void);
extern void i2c_transfer_trace_unreg(void);

/*
 * __i2c_transfer() write request
 */
TRACE_EVENT_FN(i2c_write,
               TP_PROTO(const struct i2c_adapter *adap, const struct i2c_msg *msg,
                        int num),
               TP_ARGS(adap, msg, num),
               TP_STRUCT__entry(
                       __field(int,     adapter_nr              )
                       __field(__u16,   msg_nr                  )
                       __field(__u16,   addr                    )
                       __field(__u16,   flags                   )
                       __field(__u16,   len                     )
                       __dynamic_array(__u8, buf, msg->len)     ),
               TP_fast_assign(
                       __entry->adapter_nr = adap->nr;
                       __entry->msg_nr = num;
                       __entry->addr = msg->addr;
                       __entry->flags = msg->flags;
                       __entry->len = msg->len;
                       memcpy(__get_dynamic_array(buf), msg->buf, msg->len);
                              ),
               TP_printk("i2c-%d #%u a=%03x f=%04x l=%u [%*phD]",
                         __entry->adapter_nr,
                         __entry->msg_nr,
                         __entry->addr,
                         __entry->flags,
                         __entry->len,
                         __entry->len, __get_dynamic_array(buf)
                         ),
               i2c_transfer_trace_reg,
               i2c_transfer_trace_unreg);

/*
 * __i2c_transfer() read request
 */
TRACE_EVENT_FN(i2c_read,
               TP_PROTO(const struct i2c_adapter *adap, const struct i2c_msg *msg,
                        int num),
               TP_ARGS(adap, msg, num),
               TP_STRUCT__entry(
                       __field(int,     adapter_nr              )
                       __field(__u16,   msg_nr                  )
                       __field(__u16,   addr                    )
                       __field(__u16,   flags                   )
                       __field(__u16,   len                     )
                                ),
               TP_fast_assign(
                       __entry->adapter_nr = adap->nr;
                       __entry->msg_nr = num;
                       __entry->addr = msg->addr;
                       __entry->flags = msg->flags;
                       __entry->len = msg->len;
                              ),
               TP_printk("i2c-%d #%u a=%03x f=%04x l=%u",
                         __entry->adapter_nr,
                         __entry->msg_nr,
                         __entry->addr,
                         __entry->flags,
                         __entry->len
                         ),
               i2c_transfer_trace_reg,
                       i2c_transfer_trace_unreg);

/*
 * __i2c_transfer() read reply
 */
TRACE_EVENT_FN(i2c_reply,
               TP_PROTO(const struct i2c_adapter *adap, const struct i2c_msg *msg,
                        int num),
               TP_ARGS(adap, msg, num),
               TP_STRUCT__entry(
                       __field(int,     adapter_nr              )
                       __field(__u16,   msg_nr                  )
                       __field(__u16,   addr                    )
                       __field(__u16,   flags                   )
                       __field(__u16,   len                     )
                       __dynamic_array(__u8, buf, msg->len)     ),
               TP_fast_assign(
                       __entry->adapter_nr = adap->nr;
                       __entry->msg_nr = num;
                       __entry->addr = msg->addr;
                       __entry->flags = msg->flags;
                       __entry->len = msg->len;
                       memcpy(__get_dynamic_array(buf), msg->buf, msg->len);
                              ),
               TP_printk("i2c-%d #%u a=%03x f=%04x l=%u [%*phD]",
                         __entry->adapter_nr,
                         __entry->msg_nr,
                         __entry->addr,
                         __entry->flags,
                         __entry->len,
                         __entry->len, __get_dynamic_array(buf)
                         ),
               i2c_transfer_trace_reg,
               i2c_transfer_trace_unreg);

/*
 * __i2c_transfer() result
 */
TRACE_EVENT_FN(i2c_result,
               TP_PROTO(const struct i2c_adapter *adap, int num, int ret),
               TP_ARGS(adap, num, ret),
               TP_STRUCT__entry(
                       __field(int,     adapter_nr              )
                       __field(__u16,   nr_msgs                 )
                       __field(__s16,   ret                     )
                                ),
               TP_fast_assign(
                       __entry->adapter_nr = adap->nr;
                       __entry->nr_msgs = num;
                       __entry->ret = ret;
                              ),
               TP_printk("i2c-%d n=%u ret=%d",
                         __entry->adapter_nr,
                         __entry->nr_msgs,
                         __entry->ret
                         ),
               i2c_transfer_trace_reg,
               i2c_transfer_trace_unreg);

#endif /* _TRACE_I2C_H */

/* This part must be outside protection */
#include <trace/define_trace.h>