1 /* SPDX-License-Identifier: GPL-2.0-or-later */
2 /* SMBUS 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 smbus
9
10 #if !defined(_TRACE_SMBUS_H) || defined(TRACE_HEADER_MULTI_READ)
11 #define _TRACE_SMBUS_H
12
13 #include <linux/i2c.h>
14 #include <linux/tracepoint.h>
15
16 /*
17 * drivers/i2c/i2c-core-smbus.c
18 */
19
20 /*
21 * i2c_smbus_xfer() write data or procedure call request
22 */
23 TRACE_EVENT_CONDITION(smbus_write,
24 TP_PROTO(const struct i2c_adapter *adap,
25 u16 addr, unsigned short flags,
26 char read_write, u8 command, int protocol,
27 const union i2c_smbus_data *data),
28 TP_ARGS(adap, addr, flags, read_write, command, protocol, data),
29 TP_CONDITION(read_write == I2C_SMBUS_WRITE ||
30 protocol == I2C_SMBUS_PROC_CALL ||
31 protocol == I2C_SMBUS_BLOCK_PROC_CALL),
32 TP_STRUCT__entry(
33 __field(int, adapter_nr )
34 __field(__u16, addr )
35 __field(__u16, flags )
36 __field(__u8, command )
37 __field(__u8, len )
38 __field(__u32, protocol )
39 __array(__u8, buf, I2C_SMBUS_BLOCK_MAX + 2) ),
40 TP_fast_assign(
41 __entry->adapter_nr = adap->nr;
42 __entry->addr = addr;
43 __entry->flags = flags;
44 __entry->command = command;
45 __entry->protocol = protocol;
46
47 switch (protocol) {
48 case I2C_SMBUS_BYTE_DATA:
49 __entry->len = 1;
50 goto copy;
51 case I2C_SMBUS_WORD_DATA:
52 case I2C_SMBUS_PROC_CALL:
53 __entry->len = 2;
54 goto copy;
55 case I2C_SMBUS_BLOCK_DATA:
56 case I2C_SMBUS_BLOCK_PROC_CALL:
57 case I2C_SMBUS_I2C_BLOCK_DATA:
58 __entry->len = data->block[0] + 1;
59 copy:
60 memcpy(__entry->buf, data->block, __entry->len);
61 break;
62 case I2C_SMBUS_QUICK:
63 case I2C_SMBUS_BYTE:
64 case I2C_SMBUS_I2C_BLOCK_BROKEN:
65 default:
66 __entry->len = 0;
67 }
68 ),
69 TP_printk("i2c-%d a=%03x f=%04x c=%x %s l=%u [%*phD]",
70 __entry->adapter_nr,
71 __entry->addr,
72 __entry->flags,
73 __entry->command,
74 __print_symbolic(__entry->protocol,
75 { I2C_SMBUS_QUICK, "QUICK" },
76 { I2C_SMBUS_BYTE, "BYTE" },
77 { I2C_SMBUS_BYTE_DATA, "BYTE_DATA" },
78 { I2C_SMBUS_WORD_DATA, "WORD_DATA" },
79 { I2C_SMBUS_PROC_CALL, "PROC_CALL" },
80 { I2C_SMBUS_BLOCK_DATA, "BLOCK_DATA" },
81 { I2C_SMBUS_I2C_BLOCK_BROKEN, "I2C_BLOCK_BROKEN" },
82 { I2C_SMBUS_BLOCK_PROC_CALL, "BLOCK_PROC_CALL" },
83 { I2C_SMBUS_I2C_BLOCK_DATA, "I2C_BLOCK_DATA" }),
84 __entry->len,
85 __entry->len, __entry->buf
86 ));
87
88 /*
89 * i2c_smbus_xfer() read data request
90 */
91 TRACE_EVENT_CONDITION(smbus_read,
92 TP_PROTO(const struct i2c_adapter *adap,
93 u16 addr, unsigned short flags,
94 char read_write, u8 command, int protocol),
95 TP_ARGS(adap, addr, flags, read_write, command, protocol),
96 TP_CONDITION(!(read_write == I2C_SMBUS_WRITE ||
97 protocol == I2C_SMBUS_PROC_CALL ||
98 protocol == I2C_SMBUS_BLOCK_PROC_CALL)),
99 TP_STRUCT__entry(
100 __field(int, adapter_nr )
101 __field(__u16, flags )
102 __field(__u16, addr )
103 __field(__u8, command )
104 __field(__u32, protocol )
105 __array(__u8, buf, I2C_SMBUS_BLOCK_MAX + 2) ),
106 TP_fast_assign(
107 __entry->adapter_nr = adap->nr;
108 __entry->addr = addr;
109 __entry->flags = flags;
110 __entry->command = command;
111 __entry->protocol = protocol;
112 ),
113 TP_printk("i2c-%d a=%03x f=%04x c=%x %s",
114 __entry->adapter_nr,
115 __entry->addr,
116 __entry->flags,
117 __entry->command,
118 __print_symbolic(__entry->protocol,
119 { I2C_SMBUS_QUICK, "QUICK" },
120 { I2C_SMBUS_BYTE, "BYTE" },
121 { I2C_SMBUS_BYTE_DATA, "BYTE_DATA" },
122 { I2C_SMBUS_WORD_DATA, "WORD_DATA" },
123 { I2C_SMBUS_PROC_CALL, "PROC_CALL" },
124 { I2C_SMBUS_BLOCK_DATA, "BLOCK_DATA" },
125 { I2C_SMBUS_I2C_BLOCK_BROKEN, "I2C_BLOCK_BROKEN" },
126 { I2C_SMBUS_BLOCK_PROC_CALL, "BLOCK_PROC_CALL" },
127 { I2C_SMBUS_I2C_BLOCK_DATA, "I2C_BLOCK_DATA" })
128 ));
129
130 /*
131 * i2c_smbus_xfer() read data or procedure call reply
132 */
133 TRACE_EVENT_CONDITION(smbus_reply,
134 TP_PROTO(const struct i2c_adapter *adap,
135 u16 addr, unsigned short flags,
136 char read_write, u8 command, int protocol,
137 const union i2c_smbus_data *data, int res),
138 TP_ARGS(adap, addr, flags, read_write, command, protocol, data, res),
139 TP_CONDITION(res >= 0 && read_write == I2C_SMBUS_READ),
140 TP_STRUCT__entry(
141 __field(int, adapter_nr )
142 __field(__u16, addr )
143 __field(__u16, flags )
144 __field(__u8, command )
145 __field(__u8, len )
146 __field(__u32, protocol )
147 __array(__u8, buf, I2C_SMBUS_BLOCK_MAX + 2) ),
148 TP_fast_assign(
149 __entry->adapter_nr = adap->nr;
150 __entry->addr = addr;
151 __entry->flags = flags;
152 __entry->command = command;
153 __entry->protocol = protocol;
154
155 switch (protocol) {
156 case I2C_SMBUS_BYTE:
157 case I2C_SMBUS_BYTE_DATA:
158 __entry->len = 1;
159 goto copy;
160 case I2C_SMBUS_WORD_DATA:
161 case I2C_SMBUS_PROC_CALL:
162 __entry->len = 2;
163 goto copy;
164 case I2C_SMBUS_BLOCK_DATA:
165 case I2C_SMBUS_BLOCK_PROC_CALL:
166 case I2C_SMBUS_I2C_BLOCK_DATA:
167 __entry->len = data->block[0] + 1;
168 copy:
169 memcpy(__entry->buf, data->block, __entry->len);
170 break;
171 case I2C_SMBUS_QUICK:
172 case I2C_SMBUS_I2C_BLOCK_BROKEN:
173 default:
174 __entry->len = 0;
175 }
176 ),
177 TP_printk("i2c-%d a=%03x f=%04x c=%x %s l=%u [%*phD]",
178 __entry->adapter_nr,
179 __entry->addr,
180 __entry->flags,
181 __entry->command,
182 __print_symbolic(__entry->protocol,
183 { I2C_SMBUS_QUICK, "QUICK" },
184 { I2C_SMBUS_BYTE, "BYTE" },
185 { I2C_SMBUS_BYTE_DATA, "BYTE_DATA" },
186 { I2C_SMBUS_WORD_DATA, "WORD_DATA" },
187 { I2C_SMBUS_PROC_CALL, "PROC_CALL" },
188 { I2C_SMBUS_BLOCK_DATA, "BLOCK_DATA" },
189 { I2C_SMBUS_I2C_BLOCK_BROKEN, "I2C_BLOCK_BROKEN" },
190 { I2C_SMBUS_BLOCK_PROC_CALL, "BLOCK_PROC_CALL" },
191 { I2C_SMBUS_I2C_BLOCK_DATA, "I2C_BLOCK_DATA" }),
192 __entry->len,
193 __entry->len, __entry->buf
194 ));
195
196 /*
197 * i2c_smbus_xfer() result
198 */
199 TRACE_EVENT(smbus_result,
200 TP_PROTO(const struct i2c_adapter *adap,
201 u16 addr, unsigned short flags,
202 char read_write, u8 command, int protocol,
203 int res),
204 TP_ARGS(adap, addr, flags, read_write, command, protocol, res),
205 TP_STRUCT__entry(
206 __field(int, adapter_nr )
207 __field(__u16, addr )
208 __field(__u16, flags )
209 __field(__u8, read_write )
210 __field(__u8, command )
211 __field(__s16, res )
212 __field(__u32, protocol )
213 ),
214 TP_fast_assign(
215 __entry->adapter_nr = adap->nr;
216 __entry->addr = addr;
217 __entry->flags = flags;
218 __entry->read_write = read_write;
219 __entry->command = command;
220 __entry->protocol = protocol;
221 __entry->res = res;
222 ),
223 TP_printk("i2c-%d a=%03x f=%04x c=%x %s %s res=%d",
224 __entry->adapter_nr,
225 __entry->addr,
226 __entry->flags,
227 __entry->command,
228 __print_symbolic(__entry->protocol,
229 { I2C_SMBUS_QUICK, "QUICK" },
230 { I2C_SMBUS_BYTE, "BYTE" },
231 { I2C_SMBUS_BYTE_DATA, "BYTE_DATA" },
232 { I2C_SMBUS_WORD_DATA, "WORD_DATA" },
233 { I2C_SMBUS_PROC_CALL, "PROC_CALL" },
234 { I2C_SMBUS_BLOCK_DATA, "BLOCK_DATA" },
235 { I2C_SMBUS_I2C_BLOCK_BROKEN, "I2C_BLOCK_BROKEN" },
236 { I2C_SMBUS_BLOCK_PROC_CALL, "BLOCK_PROC_CALL" },
237 { I2C_SMBUS_I2C_BLOCK_DATA, "I2C_BLOCK_DATA" }),
238 __entry->read_write == I2C_SMBUS_WRITE ? "wr" : "rd",
239 __entry->res
240 ));
241
242 #endif /* _TRACE_SMBUS_H */
243
244 /* This part must be outside protection */
245 #include <trace/define_trace.h>
246
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