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1/* SPDX-License-Identifier: GPL-2.0-or-later */
2/* I2C message transfer tracepoints
3 *
4 * Copyright (C) 2013 Red Hat, Inc. All Rights Reserved.
5 * Written by David Howells (dhowells@redhat.com)
6 */
7#undef TRACE_SYSTEM
8#define TRACE_SYSTEM i2c
9
10#if !defined(_TRACE_I2C_H) || defined(TRACE_HEADER_MULTI_READ)
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 */
19extern int i2c_transfer_trace_reg(void);
20extern void i2c_transfer_trace_unreg(void);
21
22/*
23 * __i2c_transfer() write request
24 */
25TRACE_EVENT_FN(i2c_write,
26 TP_PROTO(const struct i2c_adapter *adap, const struct i2c_msg *msg,
27 int num),
28 TP_ARGS(adap, msg, num),
29 TP_STRUCT__entry(
30 __field(int, adapter_nr )
31 __field(__u16, msg_nr )
32 __field(__u16, addr )
33 __field(__u16, flags )
34 __field(__u16, len )
35 __dynamic_array(__u8, buf, msg->len) ),
36 TP_fast_assign(
37 __entry->adapter_nr = adap->nr;
38 __entry->msg_nr = num;
39 __entry->addr = msg->addr;
40 __entry->flags = msg->flags;
41 __entry->len = msg->len;
42 memcpy(__get_dynamic_array(buf), msg->buf, msg->len);
43 ),
44 TP_printk("i2c-%d #%u a=%03x f=%04x l=%u [%*phD]",
45 __entry->adapter_nr,
46 __entry->msg_nr,
47 __entry->addr,
48 __entry->flags,
49 __entry->len,
50 __entry->len, __get_dynamic_array(buf)
51 ),
52 i2c_transfer_trace_reg,
53 i2c_transfer_trace_unreg);
54
55/*
56 * __i2c_transfer() read request
57 */
58TRACE_EVENT_FN(i2c_read,
59 TP_PROTO(const struct i2c_adapter *adap, const struct i2c_msg *msg,
60 int num),
61 TP_ARGS(adap, msg, num),
62 TP_STRUCT__entry(
63 __field(int, adapter_nr )
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 = adap->nr;
71 __entry->msg_nr = num;
72 __entry->addr = msg->addr;
73 __entry->flags = msg->flags;
74 __entry->len = msg->len;
75 ),
76 TP_printk("i2c-%d #%u a=%03x f=%04x l=%u",
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_unreg);
85
86/*
87 * __i2c_transfer() read reply
88 */
89TRACE_EVENT_FN(i2c_reply,
90 TP_PROTO(const struct i2c_adapter *adap, const struct i2c_msg *msg,
91 int num),
92 TP_ARGS(adap, msg, num),
93 TP_STRUCT__entry(
94 __field(int, adapter_nr )
95 __field(__u16, msg_nr )
96 __field(__u16, addr )
97 __field(__u16, flags )
98 __field(__u16, len )
99 __dynamic_array(__u8, buf, msg->len) ),
100 TP_fast_assign(
101 __entry->adapter_nr = adap->nr;
102 __entry->msg_nr = num;
103 __entry->addr = msg->addr;
104 __entry->flags = msg->flags;
105 __entry->len = msg->len;
106 memcpy(__get_dynamic_array(buf), msg->buf, msg->len);
107 ),
108 TP_printk("i2c-%d #%u a=%03x f=%04x l=%u [%*phD]",
109 __entry->adapter_nr,
110 __entry->msg_nr,
111 __entry->addr,
112 __entry->flags,
113 __entry->len,
114 __entry->len, __get_dynamic_array(buf)
115 ),
116 i2c_transfer_trace_reg,
117 i2c_transfer_trace_unreg);
118
119/*
120 * __i2c_transfer() result
121 */
122TRACE_EVENT_FN(i2c_result,
123 TP_PROTO(const struct i2c_adapter *adap, int num, int ret),
124 TP_ARGS(adap, num, ret),
125 TP_STRUCT__entry(
126 __field(int, adapter_nr )
127 __field(__u16, nr_msgs )
128 __field(__s16, ret )
129 ),
130 TP_fast_assign(
131 __entry->adapter_nr = adap->nr;
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>
1/* I2C and 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 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 */
23extern void i2c_transfer_trace_reg(void);
24extern void i2c_transfer_trace_unreg(void);
25
26/*
27 * __i2c_transfer() write request
28 */
29TRACE_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 */
62TRACE_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 */
93TRACE_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 */
126TRACE_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
147/*
148 * i2c_smbus_xfer() write data or procedure call request
149 */
150TRACE_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 */
218TRACE_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 */
260TRACE_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 */
326TRACE_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
369#endif /* _TRACE_I2C_H */
370
371/* This part must be outside protection */
372#include <trace/define_trace.h>