1 /* SPDX-License-Identifier: GPL-2.0-or-later * 1
2 /* I2C message transfer tracepoints
3 *
4 * Copyright (C) 2013 Red Hat, Inc. All Rights
5 * Written by David Howells (dhowells@redhat.c
6 */
7 #undef TRACE_SYSTEM
8 #define TRACE_SYSTEM i2c
9
10 #if !defined(_TRACE_I2C_H) || defined(TRACE_HE
11 #define _TRACE_I2C_H
12
13 #include <linux/i2c.h>
14 #include <linux/tracepoint.h>
15
16 /*
17 * drivers/i2c/i2c-core-base.c
18 */
19 extern int i2c_transfer_trace_reg(void);
20 extern void i2c_transfer_trace_unreg(void);
21
22 /*
23 * __i2c_transfer() write request
24 */
25 TRACE_EVENT_FN(i2c_write,
26 TP_PROTO(const struct i2c_adapt
27 int num),
28 TP_ARGS(adap, msg, num),
29 TP_STRUCT__entry(
30 __field(int, adapte
31 __field(__u16, msg_nr
32 __field(__u16, addr
33 __field(__u16, flags
34 __field(__u16, len
35 __dynamic_array(__u8, b
36 TP_fast_assign(
37 __entry->adapter_nr = a
38 __entry->msg_nr = num;
39 __entry->addr = msg->ad
40 __entry->flags = msg->f
41 __entry->len = msg->len
42 memcpy(__get_dynamic_ar
43 ),
44 TP_printk("i2c-%d #%u a=%03x f=
45 __entry->adapter_nr,
46 __entry->msg_nr,
47 __entry->addr,
48 __entry->flags,
49 __entry->len,
50 __entry->len, __get_d
51 ),
52 i2c_transfer_trace_reg,
53 i2c_transfer_trace_unreg);
54
55 /*
56 * __i2c_transfer() read request
57 */
58 TRACE_EVENT_FN(i2c_read,
59 TP_PROTO(const struct i2c_adapt
60 int num),
61 TP_ARGS(adap, msg, num),
62 TP_STRUCT__entry(
63 __field(int, adapte
64 __field(__u16, msg_nr
65 __field(__u16, addr
66 __field(__u16, flags
67 __field(__u16, len
68 ),
69 TP_fast_assign(
70 __entry->adapter_nr = a
71 __entry->msg_nr = num;
72 __entry->addr = msg->ad
73 __entry->flags = msg->f
74 __entry->len = msg->len
75 ),
76 TP_printk("i2c-%d #%u a=%03x f=
77 __entry->adapter_nr,
78 __entry->msg_nr,
79 __entry->addr,
80 __entry->flags,
81 __entry->len
82 ),
83 i2c_transfer_trace_reg,
84 i2c_transfer_trace_unre
85
86 /*
87 * __i2c_transfer() read reply
88 */
89 TRACE_EVENT_FN(i2c_reply,
90 TP_PROTO(const struct i2c_adapt
91 int num),
92 TP_ARGS(adap, msg, num),
93 TP_STRUCT__entry(
94 __field(int, adapte
95 __field(__u16, msg_nr
96 __field(__u16, addr
97 __field(__u16, flags
98 __field(__u16, len
99 __dynamic_array(__u8, b
100 TP_fast_assign(
101 __entry->adapter_nr = a
102 __entry->msg_nr = num;
103 __entry->addr = msg->ad
104 __entry->flags = msg->f
105 __entry->len = msg->len
106 memcpy(__get_dynamic_ar
107 ),
108 TP_printk("i2c-%d #%u a=%03x f=
109 __entry->adapter_nr,
110 __entry->msg_nr,
111 __entry->addr,
112 __entry->flags,
113 __entry->len,
114 __entry->len, __get_d
115 ),
116 i2c_transfer_trace_reg,
117 i2c_transfer_trace_unreg);
118
119 /*
120 * __i2c_transfer() result
121 */
122 TRACE_EVENT_FN(i2c_result,
123 TP_PROTO(const struct i2c_adapt
124 TP_ARGS(adap, num, ret),
125 TP_STRUCT__entry(
126 __field(int, adapte
127 __field(__u16, nr_msg
128 __field(__s16, ret
129 ),
130 TP_fast_assign(
131 __entry->adapter_nr = a
132 __entry->nr_msgs = num;
133 __entry->ret = ret;
134 ),
135 TP_printk("i2c-%d n=%u ret=%d",
136 __entry->adapter_nr,
137 __entry->nr_msgs,
138 __entry->ret
139 ),
140 i2c_transfer_trace_reg,
141 i2c_transfer_trace_unreg);
142
143 #endif /* _TRACE_I2C_H */
144
145 /* This part must be outside protection */
146 #include <trace/define_trace.h>
147
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