1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
|
// SPDX-License-Identifier: GPL-2.0-only
/*
* Copyright (C) 2010 FUJITSU LIMITED
* Copyright (C) 2010 Tomohiro Kusumi <kusumi.tomohiro@jp.fujitsu.com>
*/
#include <linux/kernel.h>
#include <linux/trace_seq.h>
#include <asm/unaligned.h>
#include <trace/events/scsi.h>
#define SERVICE_ACTION16(cdb) (cdb[1] & 0x1f)
#define SERVICE_ACTION32(cdb) (get_unaligned_be16(&cdb[8]))
static const char *
scsi_trace_misc(struct trace_seq *, unsigned char *, int);
static const char *
scsi_trace_rw6(struct trace_seq *p, unsigned char *cdb, int len)
{
const char *ret = trace_seq_buffer_ptr(p);
u32 lba = 0, txlen;
lba |= ((cdb[1] & 0x1F) << 16);
lba |= (cdb[2] << 8);
lba |= cdb[3];
/*
* From SBC-2: a TRANSFER LENGTH field set to zero specifies that 256
* logical blocks shall be read (READ(6)) or written (WRITE(6)).
*/
txlen = cdb[4] ? cdb[4] : 256;
trace_seq_printf(p, "lba=%u txlen=%u", lba, txlen);
trace_seq_putc(p, 0);
return ret;
}
static const char *
scsi_trace_rw10(struct trace_seq *p, unsigned char *cdb, int len)
{
const char *ret = trace_seq_buffer_ptr(p);
u32 lba, txlen;
lba = get_unaligned_be32(&cdb[2]);
txlen = get_unaligned_be16(&cdb[7]);
trace_seq_printf(p, "lba=%u txlen=%u protect=%u", lba, txlen,
cdb[1] >> 5);
if (cdb[0] == WRITE_SAME)
trace_seq_printf(p, " unmap=%u", cdb[1] >> 3 & 1);
trace_seq_putc(p, 0);
return ret;
}
static const char *
scsi_trace_rw12(struct trace_seq *p, unsigned char *cdb, int len)
{
const char *ret = trace_seq_buffer_ptr(p);
u32 lba, txlen;
lba = get_unaligned_be32(&cdb[2]);
txlen = get_unaligned_be32(&cdb[6]);
trace_seq_printf(p, "lba=%u txlen=%u protect=%u", lba, txlen,
cdb[1] >> 5);
trace_seq_putc(p, 0);
return ret;
}
static const char *
scsi_trace_rw16(struct trace_seq *p, unsigned char *cdb, int len)
{
const char *ret = trace_seq_buffer_ptr(p);
u64 lba;
u32 txlen;
lba = get_unaligned_be64(&cdb[2]);
txlen = get_unaligned_be32(&cdb[10]);
trace_seq_printf(p, "lba=%llu txlen=%u protect=%u", lba, txlen,
cdb[1] >> 5);
if (cdb[0] == WRITE_SAME_16)
trace_seq_printf(p, " unmap=%u", cdb[1] >> 3 & 1);
trace_seq_putc(p, 0);
return ret;
}
static const char *
scsi_trace_rw32(struct trace_seq *p, unsigned char *cdb, int len)
{
const char *ret = trace_seq_buffer_ptr(p), *cmd;
u64 lba;
u32 ei_lbrt, txlen;
switch (SERVICE_ACTION32(cdb)) {
case READ_32:
cmd = "READ";
break;
case VERIFY_32:
cmd = "VERIFY";
break;
case WRITE_32:
cmd = "WRITE";
break;
case WRITE_SAME_32:
cmd = "WRITE_SAME";
break;
default:
trace_seq_puts(p, "UNKNOWN");
goto out;
}
lba = get_unaligned_be64(&cdb[12]);
ei_lbrt = get_unaligned_be32(&cdb[20]);
txlen = get_unaligned_be32(&cdb[28]);
trace_seq_printf(p, "%s_32 lba=%llu txlen=%u protect=%u ei_lbrt=%u",
cmd, lba, txlen, cdb[10] >> 5, ei_lbrt);
if (SERVICE_ACTION32(cdb) == WRITE_SAME_32)
trace_seq_printf(p, " unmap=%u", cdb[10] >> 3 & 1);
out:
trace_seq_putc(p, 0);
return ret;
}
static const char *
scsi_trace_unmap(struct trace_seq *p, unsigned char *cdb, int len)
{
const char *ret = trace_seq_buffer_ptr(p);
unsigned int regions = get_unaligned_be16(&cdb[7]);
trace_seq_printf(p, "regions=%u", (regions - 8) / 16);
trace_seq_putc(p, 0);
return ret;
}
static const char *
scsi_trace_service_action_in(struct trace_seq *p, unsigned char *cdb, int len)
{
const char *ret = trace_seq_buffer_ptr(p), *cmd;
u64 lba;
u32 alloc_len;
switch (SERVICE_ACTION16(cdb)) {
case SAI_READ_CAPACITY_16:
cmd = "READ_CAPACITY_16";
break;
case SAI_GET_LBA_STATUS:
cmd = "GET_LBA_STATUS";
break;
default:
trace_seq_puts(p, "UNKNOWN");
goto out;
}
lba = get_unaligned_be64(&cdb[2]);
alloc_len = get_unaligned_be32(&cdb[10]);
trace_seq_printf(p, "%s lba=%llu alloc_len=%u", cmd, lba, alloc_len);
out:
trace_seq_putc(p, 0);
return ret;
}
static const char *
scsi_trace_maintenance_in(struct trace_seq *p, unsigned char *cdb, int len)
{
const char *ret = trace_seq_buffer_ptr(p), *cmd;
u32 alloc_len;
switch (SERVICE_ACTION16(cdb)) {
case MI_REPORT_IDENTIFYING_INFORMATION:
cmd = "REPORT_IDENTIFYING_INFORMATION";
break;
case MI_REPORT_TARGET_PGS:
cmd = "REPORT_TARGET_PORT_GROUPS";
break;
case MI_REPORT_ALIASES:
cmd = "REPORT_ALIASES";
break;
case MI_REPORT_SUPPORTED_OPERATION_CODES:
cmd = "REPORT_SUPPORTED_OPERATION_CODES";
break;
case MI_REPORT_SUPPORTED_TASK_MANAGEMENT_FUNCTIONS:
cmd = "REPORT_SUPPORTED_TASK_MANAGEMENT_FUNCTIONS";
break;
case MI_REPORT_PRIORITY:
cmd = "REPORT_PRIORITY";
break;
case MI_REPORT_TIMESTAMP:
cmd = "REPORT_TIMESTAMP";
break;
case MI_MANAGEMENT_PROTOCOL_IN:
cmd = "MANAGEMENT_PROTOCOL_IN";
break;
default:
trace_seq_puts(p, "UNKNOWN");
goto out;
}
alloc_len = get_unaligned_be32(&cdb[6]);
trace_seq_printf(p, "%s alloc_len=%u", cmd, alloc_len);
out:
trace_seq_putc(p, 0);
return ret;
}
static const char *
scsi_trace_maintenance_out(struct trace_seq *p, unsigned char *cdb, int len)
{
const char *ret = trace_seq_buffer_ptr(p), *cmd;
u32 alloc_len;
switch (SERVICE_ACTION16(cdb)) {
case MO_SET_IDENTIFYING_INFORMATION:
cmd = "SET_IDENTIFYING_INFORMATION";
break;
case MO_SET_TARGET_PGS:
cmd = "SET_TARGET_PORT_GROUPS";
break;
case MO_CHANGE_ALIASES:
cmd = "CHANGE_ALIASES";
break;
case MO_SET_PRIORITY:
cmd = "SET_PRIORITY";
break;
case MO_SET_TIMESTAMP:
cmd = "SET_TIMESTAMP";
break;
case MO_MANAGEMENT_PROTOCOL_OUT:
cmd = "MANAGEMENT_PROTOCOL_OUT";
break;
default:
trace_seq_puts(p, "UNKNOWN");
goto out;
}
alloc_len = get_unaligned_be32(&cdb[6]);
trace_seq_printf(p, "%s alloc_len=%u", cmd, alloc_len);
out:
trace_seq_putc(p, 0);
return ret;
}
static const char *
scsi_trace_zbc_in(struct trace_seq *p, unsigned char *cdb, int len)
{
const char *ret = trace_seq_buffer_ptr(p), *cmd;
u64 zone_id;
u32 alloc_len;
u8 options;
switch (SERVICE_ACTION16(cdb)) {
case ZI_REPORT_ZONES:
cmd = "REPORT_ZONES";
break;
default:
trace_seq_puts(p, "UNKNOWN");
goto out;
}
zone_id = get_unaligned_be64(&cdb[2]);
alloc_len = get_unaligned_be32(&cdb[10]);
options = cdb[14] & 0x3f;
trace_seq_printf(p, "%s zone=%llu alloc_len=%u options=%u partial=%u",
cmd, (unsigned long long)zone_id, alloc_len,
options, (cdb[14] >> 7) & 1);
out:
trace_seq_putc(p, 0);
return ret;
}
static const char *
scsi_trace_zbc_out(struct trace_seq *p, unsigned char *cdb, int len)
{
const char *ret = trace_seq_buffer_ptr(p), *cmd;
u64 zone_id;
switch (SERVICE_ACTION16(cdb)) {
case ZO_CLOSE_ZONE:
cmd = "CLOSE_ZONE";
break;
case ZO_FINISH_ZONE:
cmd = "FINISH_ZONE";
break;
case ZO_OPEN_ZONE:
cmd = "OPEN_ZONE";
break;
case ZO_RESET_WRITE_POINTER:
cmd = "RESET_WRITE_POINTER";
break;
default:
trace_seq_puts(p, "UNKNOWN");
goto out;
}
zone_id = get_unaligned_be64(&cdb[2]);
trace_seq_printf(p, "%s zone=%llu all=%u", cmd,
(unsigned long long)zone_id, cdb[14] & 1);
out:
trace_seq_putc(p, 0);
return ret;
}
static const char *
scsi_trace_varlen(struct trace_seq *p, unsigned char *cdb, int len)
{
switch (SERVICE_ACTION32(cdb)) {
case READ_32:
case VERIFY_32:
case WRITE_32:
case WRITE_SAME_32:
return scsi_trace_rw32(p, cdb, len);
default:
return scsi_trace_misc(p, cdb, len);
}
}
static const char *
scsi_trace_misc(struct trace_seq *p, unsigned char *cdb, int len)
{
const char *ret = trace_seq_buffer_ptr(p);
trace_seq_putc(p, '-');
trace_seq_putc(p, 0);
return ret;
}
const char *
scsi_trace_parse_cdb(struct trace_seq *p, unsigned char *cdb, int len)
{
switch (cdb[0]) {
case READ_6:
case WRITE_6:
return scsi_trace_rw6(p, cdb, len);
case READ_10:
case VERIFY:
case WRITE_10:
case WRITE_SAME:
return scsi_trace_rw10(p, cdb, len);
case READ_12:
case VERIFY_12:
case WRITE_12:
return scsi_trace_rw12(p, cdb, len);
case READ_16:
case VERIFY_16:
case WRITE_16:
case WRITE_SAME_16:
return scsi_trace_rw16(p, cdb, len);
case UNMAP:
return scsi_trace_unmap(p, cdb, len);
case SERVICE_ACTION_IN_16:
return scsi_trace_service_action_in(p, cdb, len);
case VARIABLE_LENGTH_CMD:
return scsi_trace_varlen(p, cdb, len);
case MAINTENANCE_IN:
return scsi_trace_maintenance_in(p, cdb, len);
case MAINTENANCE_OUT:
return scsi_trace_maintenance_out(p, cdb, len);
case ZBC_IN:
return scsi_trace_zbc_in(p, cdb, len);
case ZBC_OUT:
return scsi_trace_zbc_out(p, cdb, len);
default:
return scsi_trace_misc(p, cdb, len);
}
}
|
