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8a325997 | 1 | /* I2C and SMBUS message transfer tracepoints |
d9a83d62 DH |
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 i2c | |
13 | ||
14 | #if !defined(_TRACE_I2C_H) || defined(TRACE_HEADER_MULTI_READ) | |
15 | #define _TRACE_I2C_H | |
16 | ||
17 | #include <linux/i2c.h> | |
18 | #include <linux/tracepoint.h> | |
19 | ||
20 | /* | |
21 | * drivers/i2c/i2c-core.c | |
22 | */ | |
23 | extern void i2c_transfer_trace_reg(void); | |
24 | extern void i2c_transfer_trace_unreg(void); | |
25 | ||
26 | /* | |
27 | * __i2c_transfer() write request | |
28 | */ | |
29 | TRACE_EVENT_FN(i2c_write, | |
30 | TP_PROTO(const struct i2c_adapter *adap, const struct i2c_msg *msg, | |
31 | int num), | |
32 | TP_ARGS(adap, msg, num), | |
33 | TP_STRUCT__entry( | |
34 | __field(int, adapter_nr ) | |
35 | __field(__u16, msg_nr ) | |
36 | __field(__u16, addr ) | |
37 | __field(__u16, flags ) | |
38 | __field(__u16, len ) | |
39 | __dynamic_array(__u8, buf, msg->len) ), | |
40 | TP_fast_assign( | |
41 | __entry->adapter_nr = adap->nr; | |
42 | __entry->msg_nr = num; | |
43 | __entry->addr = msg->addr; | |
44 | __entry->flags = msg->flags; | |
45 | __entry->len = msg->len; | |
46 | memcpy(__get_dynamic_array(buf), msg->buf, msg->len); | |
47 | ), | |
48 | TP_printk("i2c-%d #%u a=%03x f=%04x l=%u [%*phD]", | |
49 | __entry->adapter_nr, | |
50 | __entry->msg_nr, | |
51 | __entry->addr, | |
52 | __entry->flags, | |
53 | __entry->len, | |
54 | __entry->len, __get_dynamic_array(buf) | |
55 | ), | |
56 | i2c_transfer_trace_reg, | |
57 | i2c_transfer_trace_unreg); | |
58 | ||
59 | /* | |
60 | * __i2c_transfer() read request | |
61 | */ | |
62 | TRACE_EVENT_FN(i2c_read, | |
63 | TP_PROTO(const struct i2c_adapter *adap, const struct i2c_msg *msg, | |
64 | int num), | |
65 | TP_ARGS(adap, msg, num), | |
66 | TP_STRUCT__entry( | |
67 | __field(int, adapter_nr ) | |
68 | __field(__u16, msg_nr ) | |
69 | __field(__u16, addr ) | |
70 | __field(__u16, flags ) | |
71 | __field(__u16, len ) | |
72 | ), | |
73 | TP_fast_assign( | |
74 | __entry->adapter_nr = adap->nr; | |
75 | __entry->msg_nr = num; | |
76 | __entry->addr = msg->addr; | |
77 | __entry->flags = msg->flags; | |
78 | __entry->len = msg->len; | |
79 | ), | |
80 | TP_printk("i2c-%d #%u a=%03x f=%04x l=%u", | |
81 | __entry->adapter_nr, | |
82 | __entry->msg_nr, | |
83 | __entry->addr, | |
84 | __entry->flags, | |
85 | __entry->len | |
86 | ), | |
87 | i2c_transfer_trace_reg, | |
88 | i2c_transfer_trace_unreg); | |
89 | ||
90 | /* | |
91 | * __i2c_transfer() read reply | |
92 | */ | |
93 | TRACE_EVENT_FN(i2c_reply, | |
94 | TP_PROTO(const struct i2c_adapter *adap, const struct i2c_msg *msg, | |
95 | int num), | |
96 | TP_ARGS(adap, msg, num), | |
97 | TP_STRUCT__entry( | |
98 | __field(int, adapter_nr ) | |
99 | __field(__u16, msg_nr ) | |
100 | __field(__u16, addr ) | |
101 | __field(__u16, flags ) | |
102 | __field(__u16, len ) | |
103 | __dynamic_array(__u8, buf, msg->len) ), | |
104 | TP_fast_assign( | |
105 | __entry->adapter_nr = adap->nr; | |
106 | __entry->msg_nr = num; | |
107 | __entry->addr = msg->addr; | |
108 | __entry->flags = msg->flags; | |
109 | __entry->len = msg->len; | |
110 | memcpy(__get_dynamic_array(buf), msg->buf, msg->len); | |
111 | ), | |
112 | TP_printk("i2c-%d #%u a=%03x f=%04x l=%u [%*phD]", | |
113 | __entry->adapter_nr, | |
114 | __entry->msg_nr, | |
115 | __entry->addr, | |
116 | __entry->flags, | |
117 | __entry->len, | |
118 | __entry->len, __get_dynamic_array(buf) | |
119 | ), | |
120 | i2c_transfer_trace_reg, | |
121 | i2c_transfer_trace_unreg); | |
122 | ||
123 | /* | |
124 | * __i2c_transfer() result | |
125 | */ | |
126 | TRACE_EVENT_FN(i2c_result, | |
127 | TP_PROTO(const struct i2c_adapter *adap, int num, int ret), | |
128 | TP_ARGS(adap, num, ret), | |
129 | TP_STRUCT__entry( | |
130 | __field(int, adapter_nr ) | |
131 | __field(__u16, nr_msgs ) | |
132 | __field(__s16, ret ) | |
133 | ), | |
134 | TP_fast_assign( | |
135 | __entry->adapter_nr = adap->nr; | |
136 | __entry->nr_msgs = num; | |
137 | __entry->ret = ret; | |
138 | ), | |
139 | TP_printk("i2c-%d n=%u ret=%d", | |
140 | __entry->adapter_nr, | |
141 | __entry->nr_msgs, | |
142 | __entry->ret | |
143 | ), | |
144 | i2c_transfer_trace_reg, | |
145 | i2c_transfer_trace_unreg); | |
146 | ||
8a325997 DH |
147 | /* |
148 | * i2c_smbus_xfer() write data or procedure call request | |
149 | */ | |
150 | TRACE_EVENT_CONDITION(smbus_write, | |
151 | TP_PROTO(const struct i2c_adapter *adap, | |
152 | u16 addr, unsigned short flags, | |
153 | char read_write, u8 command, int protocol, | |
154 | const union i2c_smbus_data *data), | |
155 | TP_ARGS(adap, addr, flags, read_write, command, protocol, data), | |
156 | TP_CONDITION(read_write == I2C_SMBUS_WRITE || | |
157 | protocol == I2C_SMBUS_PROC_CALL || | |
158 | protocol == I2C_SMBUS_BLOCK_PROC_CALL), | |
159 | TP_STRUCT__entry( | |
160 | __field(int, adapter_nr ) | |
161 | __field(__u16, addr ) | |
162 | __field(__u16, flags ) | |
163 | __field(__u8, command ) | |
164 | __field(__u8, len ) | |
165 | __field(__u32, protocol ) | |
166 | __array(__u8, buf, I2C_SMBUS_BLOCK_MAX + 2) ), | |
167 | TP_fast_assign( | |
168 | __entry->adapter_nr = adap->nr; | |
169 | __entry->addr = addr; | |
170 | __entry->flags = flags; | |
171 | __entry->command = command; | |
172 | __entry->protocol = protocol; | |
173 | ||
174 | switch (protocol) { | |
175 | case I2C_SMBUS_BYTE_DATA: | |
176 | __entry->len = 1; | |
177 | goto copy; | |
178 | case I2C_SMBUS_WORD_DATA: | |
179 | case I2C_SMBUS_PROC_CALL: | |
180 | __entry->len = 2; | |
181 | goto copy; | |
182 | case I2C_SMBUS_BLOCK_DATA: | |
183 | case I2C_SMBUS_BLOCK_PROC_CALL: | |
184 | case I2C_SMBUS_I2C_BLOCK_DATA: | |
185 | __entry->len = data->block[0] + 1; | |
186 | copy: | |
187 | memcpy(__entry->buf, data->block, __entry->len); | |
188 | break; | |
189 | case I2C_SMBUS_QUICK: | |
190 | case I2C_SMBUS_BYTE: | |
191 | case I2C_SMBUS_I2C_BLOCK_BROKEN: | |
192 | default: | |
193 | __entry->len = 0; | |
194 | } | |
195 | ), | |
196 | TP_printk("i2c-%d a=%03x f=%04x c=%x %s l=%u [%*phD]", | |
197 | __entry->adapter_nr, | |
198 | __entry->addr, | |
199 | __entry->flags, | |
200 | __entry->command, | |
201 | __print_symbolic(__entry->protocol, | |
202 | { I2C_SMBUS_QUICK, "QUICK" }, | |
203 | { I2C_SMBUS_BYTE, "BYTE" }, | |
204 | { I2C_SMBUS_BYTE_DATA, "BYTE_DATA" }, | |
205 | { I2C_SMBUS_WORD_DATA, "WORD_DATA" }, | |
206 | { I2C_SMBUS_PROC_CALL, "PROC_CALL" }, | |
207 | { I2C_SMBUS_BLOCK_DATA, "BLOCK_DATA" }, | |
208 | { I2C_SMBUS_I2C_BLOCK_BROKEN, "I2C_BLOCK_BROKEN" }, | |
209 | { I2C_SMBUS_BLOCK_PROC_CALL, "BLOCK_PROC_CALL" }, | |
210 | { I2C_SMBUS_I2C_BLOCK_DATA, "I2C_BLOCK_DATA" }), | |
211 | __entry->len, | |
212 | __entry->len, __entry->buf | |
213 | )); | |
214 | ||
215 | /* | |
216 | * i2c_smbus_xfer() read data request | |
217 | */ | |
218 | TRACE_EVENT_CONDITION(smbus_read, | |
219 | TP_PROTO(const struct i2c_adapter *adap, | |
220 | u16 addr, unsigned short flags, | |
221 | char read_write, u8 command, int protocol), | |
222 | TP_ARGS(adap, addr, flags, read_write, command, protocol), | |
223 | TP_CONDITION(!(read_write == I2C_SMBUS_WRITE || | |
224 | protocol == I2C_SMBUS_PROC_CALL || | |
225 | protocol == I2C_SMBUS_BLOCK_PROC_CALL)), | |
226 | TP_STRUCT__entry( | |
227 | __field(int, adapter_nr ) | |
228 | __field(__u16, flags ) | |
229 | __field(__u16, addr ) | |
230 | __field(__u8, command ) | |
231 | __field(__u32, protocol ) | |
232 | __array(__u8, buf, I2C_SMBUS_BLOCK_MAX + 2) ), | |
233 | TP_fast_assign( | |
234 | __entry->adapter_nr = adap->nr; | |
235 | __entry->addr = addr; | |
236 | __entry->flags = flags; | |
237 | __entry->command = command; | |
238 | __entry->protocol = protocol; | |
239 | ), | |
240 | TP_printk("i2c-%d a=%03x f=%04x c=%x %s", | |
241 | __entry->adapter_nr, | |
242 | __entry->addr, | |
243 | __entry->flags, | |
244 | __entry->command, | |
245 | __print_symbolic(__entry->protocol, | |
246 | { I2C_SMBUS_QUICK, "QUICK" }, | |
247 | { I2C_SMBUS_BYTE, "BYTE" }, | |
248 | { I2C_SMBUS_BYTE_DATA, "BYTE_DATA" }, | |
249 | { I2C_SMBUS_WORD_DATA, "WORD_DATA" }, | |
250 | { I2C_SMBUS_PROC_CALL, "PROC_CALL" }, | |
251 | { I2C_SMBUS_BLOCK_DATA, "BLOCK_DATA" }, | |
252 | { I2C_SMBUS_I2C_BLOCK_BROKEN, "I2C_BLOCK_BROKEN" }, | |
253 | { I2C_SMBUS_BLOCK_PROC_CALL, "BLOCK_PROC_CALL" }, | |
254 | { I2C_SMBUS_I2C_BLOCK_DATA, "I2C_BLOCK_DATA" }) | |
255 | )); | |
256 | ||
257 | /* | |
258 | * i2c_smbus_xfer() read data or procedure call reply | |
259 | */ | |
260 | TRACE_EVENT_CONDITION(smbus_reply, | |
261 | TP_PROTO(const struct i2c_adapter *adap, | |
262 | u16 addr, unsigned short flags, | |
263 | char read_write, u8 command, int protocol, | |
264 | const union i2c_smbus_data *data), | |
265 | TP_ARGS(adap, addr, flags, read_write, command, protocol, data), | |
266 | TP_CONDITION(read_write == I2C_SMBUS_READ), | |
267 | TP_STRUCT__entry( | |
268 | __field(int, adapter_nr ) | |
269 | __field(__u16, addr ) | |
270 | __field(__u16, flags ) | |
271 | __field(__u8, command ) | |
272 | __field(__u8, len ) | |
273 | __field(__u32, protocol ) | |
274 | __array(__u8, buf, I2C_SMBUS_BLOCK_MAX + 2) ), | |
275 | TP_fast_assign( | |
276 | __entry->adapter_nr = adap->nr; | |
277 | __entry->addr = addr; | |
278 | __entry->flags = flags; | |
279 | __entry->command = command; | |
280 | __entry->protocol = protocol; | |
281 | ||
282 | switch (protocol) { | |
283 | case I2C_SMBUS_BYTE: | |
284 | case I2C_SMBUS_BYTE_DATA: | |
285 | __entry->len = 1; | |
286 | goto copy; | |
287 | case I2C_SMBUS_WORD_DATA: | |
288 | case I2C_SMBUS_PROC_CALL: | |
289 | __entry->len = 2; | |
290 | goto copy; | |
291 | case I2C_SMBUS_BLOCK_DATA: | |
292 | case I2C_SMBUS_BLOCK_PROC_CALL: | |
293 | case I2C_SMBUS_I2C_BLOCK_DATA: | |
294 | __entry->len = data->block[0] + 1; | |
295 | copy: | |
296 | memcpy(__entry->buf, data->block, __entry->len); | |
297 | break; | |
298 | case I2C_SMBUS_QUICK: | |
299 | case I2C_SMBUS_I2C_BLOCK_BROKEN: | |
300 | default: | |
301 | __entry->len = 0; | |
302 | } | |
303 | ), | |
304 | TP_printk("i2c-%d a=%03x f=%04x c=%x %s l=%u [%*phD]", | |
305 | __entry->adapter_nr, | |
306 | __entry->addr, | |
307 | __entry->flags, | |
308 | __entry->command, | |
309 | __print_symbolic(__entry->protocol, | |
310 | { I2C_SMBUS_QUICK, "QUICK" }, | |
311 | { I2C_SMBUS_BYTE, "BYTE" }, | |
312 | { I2C_SMBUS_BYTE_DATA, "BYTE_DATA" }, | |
313 | { I2C_SMBUS_WORD_DATA, "WORD_DATA" }, | |
314 | { I2C_SMBUS_PROC_CALL, "PROC_CALL" }, | |
315 | { I2C_SMBUS_BLOCK_DATA, "BLOCK_DATA" }, | |
316 | { I2C_SMBUS_I2C_BLOCK_BROKEN, "I2C_BLOCK_BROKEN" }, | |
317 | { I2C_SMBUS_BLOCK_PROC_CALL, "BLOCK_PROC_CALL" }, | |
318 | { I2C_SMBUS_I2C_BLOCK_DATA, "I2C_BLOCK_DATA" }), | |
319 | __entry->len, | |
320 | __entry->len, __entry->buf | |
321 | )); | |
322 | ||
323 | /* | |
324 | * i2c_smbus_xfer() result | |
325 | */ | |
326 | TRACE_EVENT(smbus_result, | |
327 | TP_PROTO(const struct i2c_adapter *adap, | |
328 | u16 addr, unsigned short flags, | |
329 | char read_write, u8 command, int protocol, | |
330 | int res), | |
331 | TP_ARGS(adap, addr, flags, read_write, command, protocol, res), | |
332 | TP_STRUCT__entry( | |
333 | __field(int, adapter_nr ) | |
334 | __field(__u16, addr ) | |
335 | __field(__u16, flags ) | |
336 | __field(__u8, read_write ) | |
337 | __field(__u8, command ) | |
338 | __field(__s16, res ) | |
339 | __field(__u32, protocol ) | |
340 | ), | |
341 | TP_fast_assign( | |
342 | __entry->adapter_nr = adap->nr; | |
343 | __entry->addr = addr; | |
344 | __entry->flags = flags; | |
345 | __entry->read_write = read_write; | |
346 | __entry->command = command; | |
347 | __entry->protocol = protocol; | |
348 | __entry->res = res; | |
349 | ), | |
350 | TP_printk("i2c-%d a=%03x f=%04x c=%x %s %s res=%d", | |
351 | __entry->adapter_nr, | |
352 | __entry->addr, | |
353 | __entry->flags, | |
354 | __entry->command, | |
355 | __print_symbolic(__entry->protocol, | |
356 | { I2C_SMBUS_QUICK, "QUICK" }, | |
357 | { I2C_SMBUS_BYTE, "BYTE" }, | |
358 | { I2C_SMBUS_BYTE_DATA, "BYTE_DATA" }, | |
359 | { I2C_SMBUS_WORD_DATA, "WORD_DATA" }, | |
360 | { I2C_SMBUS_PROC_CALL, "PROC_CALL" }, | |
361 | { I2C_SMBUS_BLOCK_DATA, "BLOCK_DATA" }, | |
362 | { I2C_SMBUS_I2C_BLOCK_BROKEN, "I2C_BLOCK_BROKEN" }, | |
363 | { I2C_SMBUS_BLOCK_PROC_CALL, "BLOCK_PROC_CALL" }, | |
364 | { I2C_SMBUS_I2C_BLOCK_DATA, "I2C_BLOCK_DATA" }), | |
365 | __entry->read_write == I2C_SMBUS_WRITE ? "wr" : "rd", | |
366 | __entry->res | |
367 | )); | |
368 | ||
d9a83d62 DH |
369 | #endif /* _TRACE_I2C_H */ |
370 | ||
371 | /* This part must be outside protection */ | |
372 | #include <trace/define_trace.h> |