summaryrefslogtreecommitdiffstats
path: root/tools/lib/traceevent/plugin_scsi.c
blob: 3727de48c8d50267c4c9cd1df33af69a1ff12643 (plain)
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
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
#include <stdio.h>
#include <string.h>
#include <inttypes.h>
#include "event-parse.h"

typedef unsigned long sector_t;
typedef uint64_t u64;
typedef unsigned int u32;

/*
 *      SCSI opcodes
 */
#define TEST_UNIT_READY			0x00
#define REZERO_UNIT			0x01
#define REQUEST_SENSE			0x03
#define FORMAT_UNIT			0x04
#define READ_BLOCK_LIMITS		0x05
#define REASSIGN_BLOCKS			0x07
#define INITIALIZE_ELEMENT_STATUS	0x07
#define READ_6				0x08
#define WRITE_6				0x0a
#define SEEK_6				0x0b
#define READ_REVERSE			0x0f
#define WRITE_FILEMARKS			0x10
#define SPACE				0x11
#define INQUIRY				0x12
#define RECOVER_BUFFERED_DATA		0x14
#define MODE_SELECT			0x15
#define RESERVE				0x16
#define RELEASE				0x17
#define COPY				0x18
#define ERASE				0x19
#define MODE_SENSE			0x1a
#define START_STOP			0x1b
#define RECEIVE_DIAGNOSTIC		0x1c
#define SEND_DIAGNOSTIC			0x1d
#define ALLOW_MEDIUM_REMOVAL		0x1e

#define READ_FORMAT_CAPACITIES		0x23
#define SET_WINDOW			0x24
#define READ_CAPACITY			0x25
#define READ_10				0x28
#define WRITE_10			0x2a
#define SEEK_10				0x2b
#define POSITION_TO_ELEMENT		0x2b
#define WRITE_VERIFY			0x2e
#define VERIFY				0x2f
#define SEARCH_HIGH			0x30
#define SEARCH_EQUAL			0x31
#define SEARCH_LOW			0x32
#define SET_LIMITS			0x33
#define PRE_FETCH			0x34
#define READ_POSITION			0x34
#define SYNCHRONIZE_CACHE		0x35
#define LOCK_UNLOCK_CACHE		0x36
#define READ_DEFECT_DATA		0x37
#define MEDIUM_SCAN			0x38
#define COMPARE				0x39
#define COPY_VERIFY			0x3a
#define WRITE_BUFFER			0x3b
#define READ_BUFFER			0x3c
#define UPDATE_BLOCK			0x3d
#define READ_LONG			0x3e
#define WRITE_LONG			0x3f
#define CHANGE_DEFINITION		0x40
#define WRITE_SAME			0x41
#define UNMAP				0x42
#define READ_TOC			0x43
#define READ_HEADER			0x44
#define GET_EVENT_STATUS_NOTIFICATION	0x4a
#define LOG_SELECT			0x4c
#define LOG_SENSE			0x4d
#define XDWRITEREAD_10			0x53
#define MODE_SELECT_10			0x55
#define RESERVE_10			0x56
#define RELEASE_10			0x57
#define MODE_SENSE_10			0x5a
#define PERSISTENT_RESERVE_IN		0x5e
#define PERSISTENT_RESERVE_OUT		0x5f
#define VARIABLE_LENGTH_CMD		0x7f
#define REPORT_LUNS			0xa0
#define SECURITY_PROTOCOL_IN		0xa2
#define MAINTENANCE_IN			0xa3
#define MAINTENANCE_OUT			0xa4
#define MOVE_MEDIUM			0xa5
#define EXCHANGE_MEDIUM			0xa6
#define READ_12				0xa8
#define SERVICE_ACTION_OUT_12		0xa9
#define WRITE_12			0xaa
#define SERVICE_ACTION_IN_12		0xab
#define WRITE_VERIFY_12			0xae
#define VERIFY_12			0xaf
#define SEARCH_HIGH_12			0xb0
#define SEARCH_EQUAL_12			0xb1
#define SEARCH_LOW_12			0xb2
#define SECURITY_PROTOCOL_OUT		0xb5
#define READ_ELEMENT_STATUS		0xb8
#define SEND_VOLUME_TAG			0xb6
#define WRITE_LONG_2			0xea
#define EXTENDED_COPY			0x83
#define RECEIVE_COPY_RESULTS		0x84
#define ACCESS_CONTROL_IN		0x86
#define ACCESS_CONTROL_OUT		0x87
#define READ_16				0x88
#define WRITE_16			0x8a
#define READ_ATTRIBUTE			0x8c
#define WRITE_ATTRIBUTE			0x8d
#define VERIFY_16			0x8f
#define SYNCHRONIZE_CACHE_16		0x91
#define WRITE_SAME_16			0x93
#define SERVICE_ACTION_BIDIRECTIONAL	0x9d
#define SERVICE_ACTION_IN_16		0x9e
#define SERVICE_ACTION_OUT_16		0x9f
/* values for service action in */
#define	SAI_READ_CAPACITY_16		0x10
#define SAI_GET_LBA_STATUS		0x12
/* values for VARIABLE_LENGTH_CMD service action codes
 * see spc4r17 Section D.3.5, table D.7 and D.8 */
#define VLC_SA_RECEIVE_CREDENTIAL	0x1800
/* values for maintenance in */
#define MI_REPORT_IDENTIFYING_INFORMATION		0x05
#define MI_REPORT_TARGET_PGS				0x0a
#define MI_REPORT_ALIASES				0x0b
#define MI_REPORT_SUPPORTED_OPERATION_CODES		0x0c
#define MI_REPORT_SUPPORTED_TASK_MANAGEMENT_FUNCTIONS	0x0d
#define MI_REPORT_PRIORITY				0x0e
#define MI_REPORT_TIMESTAMP				0x0f
#define MI_MANAGEMENT_PROTOCOL_IN			0x10
/* value for MI_REPORT_TARGET_PGS ext header */
#define MI_EXT_HDR_PARAM_FMT		0x20
/* values for maintenance out */
#define MO_SET_IDENTIFYING_INFORMATION	0x06
#define MO_SET_TARGET_PGS		0x0a
#define MO_CHANGE_ALIASES		0x0b
#define MO_SET_PRIORITY			0x0e
#define MO_SET_TIMESTAMP		0x0f
#define MO_MANAGEMENT_PROTOCOL_OUT	0x10
/* values for variable length command */
#define XDREAD_32			0x03
#define XDWRITE_32			0x04
#define XPWRITE_32			0x06
#define XDWRITEREAD_32			0x07
#define READ_32				0x09
#define VERIFY_32			0x0a
#define WRITE_32			0x0b
#define WRITE_SAME_32			0x0d

#define SERVICE_ACTION16(cdb) (cdb[1] & 0x1f)
#define SERVICE_ACTION32(cdb) ((cdb[8] << 8) | cdb[9])

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 = p->buffer + p->len;
	sector_t lba = 0, txlen = 0;

	lba |= ((cdb[1] & 0x1F) << 16);
	lba |=  (cdb[2] << 8);
	lba |=   cdb[3];
	txlen = cdb[4];

	trace_seq_printf(p, "lba=%llu txlen=%llu",
			 (unsigned long long)lba, (unsigned long long)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 = p->buffer + p->len;
	sector_t lba = 0, txlen = 0;

	lba |= (cdb[2] << 24);
	lba |= (cdb[3] << 16);
	lba |= (cdb[4] << 8);
	lba |=  cdb[5];
	txlen |= (cdb[7] << 8);
	txlen |=  cdb[8];

	trace_seq_printf(p, "lba=%llu txlen=%llu protect=%u",
			 (unsigned long long)lba, (unsigned long long)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 = p->buffer + p->len;
	sector_t lba = 0, txlen = 0;

	lba |= (cdb[2] << 24);
	lba |= (cdb[3] << 16);
	lba |= (cdb[4] << 8);
	lba |=  cdb[5];
	txlen |= (cdb[6] << 24);
	txlen |= (cdb[7] << 16);
	txlen |= (cdb[8] << 8);
	txlen |=  cdb[9];

	trace_seq_printf(p, "lba=%llu txlen=%llu protect=%u",
			 (unsigned long long)lba, (unsigned long long)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 = p->buffer + p->len;
	sector_t lba = 0, txlen = 0;

	lba |= ((u64)cdb[2] << 56);
	lba |= ((u64)cdb[3] << 48);
	lba |= ((u64)cdb[4] << 40);
	lba |= ((u64)cdb[5] << 32);
	lba |= (cdb[6] << 24);
	lba |= (cdb[7] << 16);
	lba |= (cdb[8] << 8);
	lba |=  cdb[9];
	txlen |= (cdb[10] << 24);
	txlen |= (cdb[11] << 16);
	txlen |= (cdb[12] << 8);
	txlen |=  cdb[13];

	trace_seq_printf(p, "lba=%llu txlen=%llu protect=%u",
			 (unsigned long long)lba, (unsigned long long)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 = p->buffer + p->len, *cmd;
	sector_t lba = 0, txlen = 0;
	u32 ei_lbrt = 0;

	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_printf(p, "UNKNOWN");
		goto out;
	}

	lba |= ((u64)cdb[12] << 56);
	lba |= ((u64)cdb[13] << 48);
	lba |= ((u64)cdb[14] << 40);
	lba |= ((u64)cdb[15] << 32);
	lba |= (cdb[16] << 24);
	lba |= (cdb[17] << 16);
	lba |= (cdb[18] << 8);
	lba |=  cdb[19];
	ei_lbrt |= (cdb[20] << 24);
	ei_lbrt |= (cdb[21] << 16);
	ei_lbrt |= (cdb[22] << 8);
	ei_lbrt |=  cdb[23];
	txlen |= (cdb[28] << 24);
	txlen |= (cdb[29] << 16);
	txlen |= (cdb[30] << 8);
	txlen |=  cdb[31];

	trace_seq_printf(p, "%s_32 lba=%llu txlen=%llu protect=%u ei_lbrt=%u",
			 cmd, (unsigned long long)lba,
			 (unsigned long long)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 = p->buffer + p->len;
	unsigned int regions = cdb[7] << 8 | cdb[8];

	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 = p->buffer + p->len, *cmd;
	sector_t lba = 0;
	u32 alloc_len = 0;

	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_printf(p, "UNKNOWN");
		goto out;
	}

	lba |= ((u64)cdb[2] << 56);
	lba |= ((u64)cdb[3] << 48);
	lba |= ((u64)cdb[4] << 40);
	lba |= ((u64)cdb[5] << 32);
	lba |= (cdb[6] << 24);
	lba |= (cdb[7] << 16);
	lba |= (cdb[8] << 8);
	lba |=  cdb[9];
	alloc_len |= (cdb[10] << 24);
	alloc_len |= (cdb[11] << 16);
	alloc_len |= (cdb[12] << 8);
	alloc_len |=  cdb[13];

	trace_seq_printf(p, "%s lba=%llu alloc_len=%u", cmd,
			 (unsigned long long)lba, alloc_len);

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 = p->buffer + p->len;

	trace_seq_printf(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);
	default:
		return scsi_trace_misc(p, cdb, len);
	}
}

unsigned long long process_scsi_trace_parse_cdb(struct trace_seq *s,
						unsigned long long *args)
{
	scsi_trace_parse_cdb(s, (unsigned char *) (unsigned long) args[1], args[2]);
	return 0;
}

int PEVENT_PLUGIN_LOADER(struct pevent *pevent)
{
	pevent_register_print_function(pevent,
				       process_scsi_trace_parse_cdb,
				       PEVENT_FUNC_ARG_STRING,
				       "scsi_trace_parse_cdb",
				       PEVENT_FUNC_ARG_PTR,
				       PEVENT_FUNC_ARG_PTR,
				       PEVENT_FUNC_ARG_INT,
				       PEVENT_FUNC_ARG_VOID);
	return 0;
}

void PEVENT_PLUGIN_UNLOADER(struct pevent *pevent)
{
	pevent_unregister_print_function(pevent, process_scsi_trace_parse_cdb,
					 "scsi_trace_parse_cdb");
}