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22c78d1c WS |
1 | /* SMBUS message transfer tracepoints |
2 | * | |
3 | * Copyright (C) 2013 Red Hat, Inc. All Rights Reserved. | |
4 | * Written by David Howells (dhowells@redhat.com) | |
5 | * | |
6 | * This program is free software; you can redistribute it and/or | |
7 | * modify it under the terms of the GNU General Public Licence | |
8 | * as published by the Free Software Foundation; either version | |
9 | * 2 of the Licence, or (at your option) any later version. | |
10 | */ | |
11 | #undef TRACE_SYSTEM | |
12 | #define TRACE_SYSTEM smbus | |
13 | ||
14 | #if !defined(_TRACE_SMBUS_H) || defined(TRACE_HEADER_MULTI_READ) | |
15 | #define _TRACE_SMBUS_H | |
16 | ||
17 | #include <linux/i2c.h> | |
18 | #include <linux/tracepoint.h> | |
19 | ||
20 | /* | |
21 | * drivers/i2c/i2c-core-smbus.c | |
22 | */ | |
23 | ||
24 | /* | |
25 | * i2c_smbus_xfer() write data or procedure call request | |
26 | */ | |
27 | TRACE_EVENT_CONDITION(smbus_write, | |
28 | TP_PROTO(const struct i2c_adapter *adap, | |
29 | u16 addr, unsigned short flags, | |
30 | char read_write, u8 command, int protocol, | |
31 | const union i2c_smbus_data *data), | |
32 | TP_ARGS(adap, addr, flags, read_write, command, protocol, data), | |
33 | TP_CONDITION(read_write == I2C_SMBUS_WRITE || | |
34 | protocol == I2C_SMBUS_PROC_CALL || | |
35 | protocol == I2C_SMBUS_BLOCK_PROC_CALL), | |
36 | TP_STRUCT__entry( | |
37 | __field(int, adapter_nr ) | |
38 | __field(__u16, addr ) | |
39 | __field(__u16, flags ) | |
40 | __field(__u8, command ) | |
41 | __field(__u8, len ) | |
42 | __field(__u32, protocol ) | |
43 | __array(__u8, buf, I2C_SMBUS_BLOCK_MAX + 2) ), | |
44 | TP_fast_assign( | |
45 | __entry->adapter_nr = adap->nr; | |
46 | __entry->addr = addr; | |
47 | __entry->flags = flags; | |
48 | __entry->command = command; | |
49 | __entry->protocol = protocol; | |
50 | ||
51 | switch (protocol) { | |
52 | case I2C_SMBUS_BYTE_DATA: | |
53 | __entry->len = 1; | |
54 | goto copy; | |
55 | case I2C_SMBUS_WORD_DATA: | |
56 | case I2C_SMBUS_PROC_CALL: | |
57 | __entry->len = 2; | |
58 | goto copy; | |
59 | case I2C_SMBUS_BLOCK_DATA: | |
60 | case I2C_SMBUS_BLOCK_PROC_CALL: | |
61 | case I2C_SMBUS_I2C_BLOCK_DATA: | |
62 | __entry->len = data->block[0] + 1; | |
63 | copy: | |
64 | memcpy(__entry->buf, data->block, __entry->len); | |
65 | break; | |
66 | case I2C_SMBUS_QUICK: | |
67 | case I2C_SMBUS_BYTE: | |
68 | case I2C_SMBUS_I2C_BLOCK_BROKEN: | |
69 | default: | |
70 | __entry->len = 0; | |
71 | } | |
72 | ), | |
73 | TP_printk("i2c-%d a=%03x f=%04x c=%x %s l=%u [%*phD]", | |
74 | __entry->adapter_nr, | |
75 | __entry->addr, | |
76 | __entry->flags, | |
77 | __entry->command, | |
78 | __print_symbolic(__entry->protocol, | |
79 | { I2C_SMBUS_QUICK, "QUICK" }, | |
80 | { I2C_SMBUS_BYTE, "BYTE" }, | |
81 | { I2C_SMBUS_BYTE_DATA, "BYTE_DATA" }, | |
82 | { I2C_SMBUS_WORD_DATA, "WORD_DATA" }, | |
83 | { I2C_SMBUS_PROC_CALL, "PROC_CALL" }, | |
84 | { I2C_SMBUS_BLOCK_DATA, "BLOCK_DATA" }, | |
85 | { I2C_SMBUS_I2C_BLOCK_BROKEN, "I2C_BLOCK_BROKEN" }, | |
86 | { I2C_SMBUS_BLOCK_PROC_CALL, "BLOCK_PROC_CALL" }, | |
87 | { I2C_SMBUS_I2C_BLOCK_DATA, "I2C_BLOCK_DATA" }), | |
88 | __entry->len, | |
89 | __entry->len, __entry->buf | |
90 | )); | |
91 | ||
92 | /* | |
93 | * i2c_smbus_xfer() read data request | |
94 | */ | |
95 | TRACE_EVENT_CONDITION(smbus_read, | |
96 | TP_PROTO(const struct i2c_adapter *adap, | |
97 | u16 addr, unsigned short flags, | |
98 | char read_write, u8 command, int protocol), | |
99 | TP_ARGS(adap, addr, flags, read_write, command, protocol), | |
100 | TP_CONDITION(!(read_write == I2C_SMBUS_WRITE || | |
101 | protocol == I2C_SMBUS_PROC_CALL || | |
102 | protocol == I2C_SMBUS_BLOCK_PROC_CALL)), | |
103 | TP_STRUCT__entry( | |
104 | __field(int, adapter_nr ) | |
105 | __field(__u16, flags ) | |
106 | __field(__u16, addr ) | |
107 | __field(__u8, command ) | |
108 | __field(__u32, protocol ) | |
109 | __array(__u8, buf, I2C_SMBUS_BLOCK_MAX + 2) ), | |
110 | TP_fast_assign( | |
111 | __entry->adapter_nr = adap->nr; | |
112 | __entry->addr = addr; | |
113 | __entry->flags = flags; | |
114 | __entry->command = command; | |
115 | __entry->protocol = protocol; | |
116 | ), | |
117 | TP_printk("i2c-%d a=%03x f=%04x c=%x %s", | |
118 | __entry->adapter_nr, | |
119 | __entry->addr, | |
120 | __entry->flags, | |
121 | __entry->command, | |
122 | __print_symbolic(__entry->protocol, | |
123 | { I2C_SMBUS_QUICK, "QUICK" }, | |
124 | { I2C_SMBUS_BYTE, "BYTE" }, | |
125 | { I2C_SMBUS_BYTE_DATA, "BYTE_DATA" }, | |
126 | { I2C_SMBUS_WORD_DATA, "WORD_DATA" }, | |
127 | { I2C_SMBUS_PROC_CALL, "PROC_CALL" }, | |
128 | { I2C_SMBUS_BLOCK_DATA, "BLOCK_DATA" }, | |
129 | { I2C_SMBUS_I2C_BLOCK_BROKEN, "I2C_BLOCK_BROKEN" }, | |
130 | { I2C_SMBUS_BLOCK_PROC_CALL, "BLOCK_PROC_CALL" }, | |
131 | { I2C_SMBUS_I2C_BLOCK_DATA, "I2C_BLOCK_DATA" }) | |
132 | )); | |
133 | ||
134 | /* | |
135 | * i2c_smbus_xfer() read data or procedure call reply | |
136 | */ | |
137 | TRACE_EVENT_CONDITION(smbus_reply, | |
138 | TP_PROTO(const struct i2c_adapter *adap, | |
139 | u16 addr, unsigned short flags, | |
140 | char read_write, u8 command, int protocol, | |
141 | const union i2c_smbus_data *data), | |
142 | TP_ARGS(adap, addr, flags, read_write, command, protocol, data), | |
143 | TP_CONDITION(read_write == I2C_SMBUS_READ), | |
144 | TP_STRUCT__entry( | |
145 | __field(int, adapter_nr ) | |
146 | __field(__u16, addr ) | |
147 | __field(__u16, flags ) | |
148 | __field(__u8, command ) | |
149 | __field(__u8, len ) | |
150 | __field(__u32, protocol ) | |
151 | __array(__u8, buf, I2C_SMBUS_BLOCK_MAX + 2) ), | |
152 | TP_fast_assign( | |
153 | __entry->adapter_nr = adap->nr; | |
154 | __entry->addr = addr; | |
155 | __entry->flags = flags; | |
156 | __entry->command = command; | |
157 | __entry->protocol = protocol; | |
158 | ||
159 | switch (protocol) { | |
160 | case I2C_SMBUS_BYTE: | |
161 | case I2C_SMBUS_BYTE_DATA: | |
162 | __entry->len = 1; | |
163 | goto copy; | |
164 | case I2C_SMBUS_WORD_DATA: | |
165 | case I2C_SMBUS_PROC_CALL: | |
166 | __entry->len = 2; | |
167 | goto copy; | |
168 | case I2C_SMBUS_BLOCK_DATA: | |
169 | case I2C_SMBUS_BLOCK_PROC_CALL: | |
170 | case I2C_SMBUS_I2C_BLOCK_DATA: | |
171 | __entry->len = data->block[0] + 1; | |
172 | copy: | |
173 | memcpy(__entry->buf, data->block, __entry->len); | |
174 | break; | |
175 | case I2C_SMBUS_QUICK: | |
176 | case I2C_SMBUS_I2C_BLOCK_BROKEN: | |
177 | default: | |
178 | __entry->len = 0; | |
179 | } | |
180 | ), | |
181 | TP_printk("i2c-%d a=%03x f=%04x c=%x %s l=%u [%*phD]", | |
182 | __entry->adapter_nr, | |
183 | __entry->addr, | |
184 | __entry->flags, | |
185 | __entry->command, | |
186 | __print_symbolic(__entry->protocol, | |
187 | { I2C_SMBUS_QUICK, "QUICK" }, | |
188 | { I2C_SMBUS_BYTE, "BYTE" }, | |
189 | { I2C_SMBUS_BYTE_DATA, "BYTE_DATA" }, | |
190 | { I2C_SMBUS_WORD_DATA, "WORD_DATA" }, | |
191 | { I2C_SMBUS_PROC_CALL, "PROC_CALL" }, | |
192 | { I2C_SMBUS_BLOCK_DATA, "BLOCK_DATA" }, | |
193 | { I2C_SMBUS_I2C_BLOCK_BROKEN, "I2C_BLOCK_BROKEN" }, | |
194 | { I2C_SMBUS_BLOCK_PROC_CALL, "BLOCK_PROC_CALL" }, | |
195 | { I2C_SMBUS_I2C_BLOCK_DATA, "I2C_BLOCK_DATA" }), | |
196 | __entry->len, | |
197 | __entry->len, __entry->buf | |
198 | )); | |
199 | ||
200 | /* | |
201 | * i2c_smbus_xfer() result | |
202 | */ | |
203 | TRACE_EVENT(smbus_result, | |
204 | TP_PROTO(const struct i2c_adapter *adap, | |
205 | u16 addr, unsigned short flags, | |
206 | char read_write, u8 command, int protocol, | |
207 | int res), | |
208 | TP_ARGS(adap, addr, flags, read_write, command, protocol, res), | |
209 | TP_STRUCT__entry( | |
210 | __field(int, adapter_nr ) | |
211 | __field(__u16, addr ) | |
212 | __field(__u16, flags ) | |
213 | __field(__u8, read_write ) | |
214 | __field(__u8, command ) | |
215 | __field(__s16, res ) | |
216 | __field(__u32, protocol ) | |
217 | ), | |
218 | TP_fast_assign( | |
219 | __entry->adapter_nr = adap->nr; | |
220 | __entry->addr = addr; | |
221 | __entry->flags = flags; | |
222 | __entry->read_write = read_write; | |
223 | __entry->command = command; | |
224 | __entry->protocol = protocol; | |
225 | __entry->res = res; | |
226 | ), | |
227 | TP_printk("i2c-%d a=%03x f=%04x c=%x %s %s res=%d", | |
228 | __entry->adapter_nr, | |
229 | __entry->addr, | |
230 | __entry->flags, | |
231 | __entry->command, | |
232 | __print_symbolic(__entry->protocol, | |
233 | { I2C_SMBUS_QUICK, "QUICK" }, | |
234 | { I2C_SMBUS_BYTE, "BYTE" }, | |
235 | { I2C_SMBUS_BYTE_DATA, "BYTE_DATA" }, | |
236 | { I2C_SMBUS_WORD_DATA, "WORD_DATA" }, | |
237 | { I2C_SMBUS_PROC_CALL, "PROC_CALL" }, | |
238 | { I2C_SMBUS_BLOCK_DATA, "BLOCK_DATA" }, | |
239 | { I2C_SMBUS_I2C_BLOCK_BROKEN, "I2C_BLOCK_BROKEN" }, | |
240 | { I2C_SMBUS_BLOCK_PROC_CALL, "BLOCK_PROC_CALL" }, | |
241 | { I2C_SMBUS_I2C_BLOCK_DATA, "I2C_BLOCK_DATA" }), | |
242 | __entry->read_write == I2C_SMBUS_WRITE ? "wr" : "rd", | |
243 | __entry->res | |
244 | )); | |
245 | ||
246 | #endif /* _TRACE_SMBUS_H */ | |
247 | ||
248 | /* This part must be outside protection */ | |
249 | #include <trace/define_trace.h> |