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1/*
2 * Copyright (C) 2010 FUJITSU LIMITED
3 * Copyright (C) 2010 Tomohiro Kusumi <kusumi.tomohiro@jp.fujitsu.com>
4 *
5 * This program is free software; you can redistribute it and/or modify
6 * it under the terms of the GNU General Public License version 2 as
7 * published by the Free Software Foundation.
8 *
9 * This program is distributed in the hope that it will be useful,
10 * but WITHOUT ANY WARRANTY; without even the implied warranty of
11 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
12 * GNU General Public License for more details.
13 *
14 * You should have received a copy of the GNU General Public License
15 * along with this program; if not, write to the Free Software
16 * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
17 */
18#include <linux/kernel.h>
19#include <linux/trace_seq.h>
20#include <trace/events/scsi.h>
21
22#define SERVICE_ACTION16(cdb) (cdb[1] & 0x1f)
23#define SERVICE_ACTION32(cdb) ((cdb[8] << 8) | cdb[9])
24
25static const char *
26scsi_trace_misc(struct trace_seq *, unsigned char *, int);
27
28static const char *
29scsi_trace_rw6(struct trace_seq *p, unsigned char *cdb, int len)
30{
31 const char *ret = p->buffer + p->len;
32 sector_t lba = 0, txlen = 0;
33
34 lba |= ((cdb[1] & 0x1F) << 16);
35 lba |= (cdb[2] << 8);
36 lba |= cdb[3];
37 txlen = cdb[4];
38
39 trace_seq_printf(p, "lba=%llu txlen=%llu",
40 (unsigned long long)lba, (unsigned long long)txlen);
41 trace_seq_putc(p, 0);
42
43 return ret;
44}
45
46static const char *
47scsi_trace_rw10(struct trace_seq *p, unsigned char *cdb, int len)
48{
49 const char *ret = p->buffer + p->len;
50 sector_t lba = 0, txlen = 0;
51
52 lba |= (cdb[2] << 24);
53 lba |= (cdb[3] << 16);
54 lba |= (cdb[4] << 8);
55 lba |= cdb[5];
56 txlen |= (cdb[7] << 8);
57 txlen |= cdb[8];
58
59 trace_seq_printf(p, "lba=%llu txlen=%llu protect=%u",
60 (unsigned long long)lba, (unsigned long long)txlen,
61 cdb[1] >> 5);
62
63 if (cdb[0] == WRITE_SAME)
64 trace_seq_printf(p, " unmap=%u", cdb[1] >> 3 & 1);
65
66 trace_seq_putc(p, 0);
67
68 return ret;
69}
70
71static const char *
72scsi_trace_rw12(struct trace_seq *p, unsigned char *cdb, int len)
73{
74 const char *ret = p->buffer + p->len;
75 sector_t lba = 0, txlen = 0;
76
77 lba |= (cdb[2] << 24);
78 lba |= (cdb[3] << 16);
79 lba |= (cdb[4] << 8);
80 lba |= cdb[5];
81 txlen |= (cdb[6] << 24);
82 txlen |= (cdb[7] << 16);
83 txlen |= (cdb[8] << 8);
84 txlen |= cdb[9];
85
86 trace_seq_printf(p, "lba=%llu txlen=%llu protect=%u",
87 (unsigned long long)lba, (unsigned long long)txlen,
88 cdb[1] >> 5);
89 trace_seq_putc(p, 0);
90
91 return ret;
92}
93
94static const char *
95scsi_trace_rw16(struct trace_seq *p, unsigned char *cdb, int len)
96{
97 const char *ret = p->buffer + p->len;
98 sector_t lba = 0, txlen = 0;
99
100 lba |= ((u64)cdb[2] << 56);
101 lba |= ((u64)cdb[3] << 48);
102 lba |= ((u64)cdb[4] << 40);
103 lba |= ((u64)cdb[5] << 32);
104 lba |= (cdb[6] << 24);
105 lba |= (cdb[7] << 16);
106 lba |= (cdb[8] << 8);
107 lba |= cdb[9];
108 txlen |= (cdb[10] << 24);
109 txlen |= (cdb[11] << 16);
110 txlen |= (cdb[12] << 8);
111 txlen |= cdb[13];
112
113 trace_seq_printf(p, "lba=%llu txlen=%llu protect=%u",
114 (unsigned long long)lba, (unsigned long long)txlen,
115 cdb[1] >> 5);
116
117 if (cdb[0] == WRITE_SAME_16)
118 trace_seq_printf(p, " unmap=%u", cdb[1] >> 3 & 1);
119
120 trace_seq_putc(p, 0);
121
122 return ret;
123}
124
125static const char *
126scsi_trace_rw32(struct trace_seq *p, unsigned char *cdb, int len)
127{
128 const char *ret = p->buffer + p->len, *cmd;
129 sector_t lba = 0, txlen = 0;
130 u32 ei_lbrt = 0;
131
132 switch (SERVICE_ACTION32(cdb)) {
133 case READ_32:
134 cmd = "READ";
135 break;
136 case VERIFY_32:
137 cmd = "VERIFY";
138 break;
139 case WRITE_32:
140 cmd = "WRITE";
141 break;
142 case WRITE_SAME_32:
143 cmd = "WRITE_SAME";
144 break;
145 default:
146 trace_seq_printf(p, "UNKNOWN");
147 goto out;
148 }
149
150 lba |= ((u64)cdb[12] << 56);
151 lba |= ((u64)cdb[13] << 48);
152 lba |= ((u64)cdb[14] << 40);
153 lba |= ((u64)cdb[15] << 32);
154 lba |= (cdb[16] << 24);
155 lba |= (cdb[17] << 16);
156 lba |= (cdb[18] << 8);
157 lba |= cdb[19];
158 ei_lbrt |= (cdb[20] << 24);
159 ei_lbrt |= (cdb[21] << 16);
160 ei_lbrt |= (cdb[22] << 8);
161 ei_lbrt |= cdb[23];
162 txlen |= (cdb[28] << 24);
163 txlen |= (cdb[29] << 16);
164 txlen |= (cdb[30] << 8);
165 txlen |= cdb[31];
166
167 trace_seq_printf(p, "%s_32 lba=%llu txlen=%llu protect=%u ei_lbrt=%u",
168 cmd, (unsigned long long)lba,
169 (unsigned long long)txlen, cdb[10] >> 5, ei_lbrt);
170
171 if (SERVICE_ACTION32(cdb) == WRITE_SAME_32)
172 trace_seq_printf(p, " unmap=%u", cdb[10] >> 3 & 1);
173
174out:
175 trace_seq_putc(p, 0);
176
177 return ret;
178}
179
180static const char *
181scsi_trace_unmap(struct trace_seq *p, unsigned char *cdb, int len)
182{
183 const char *ret = p->buffer + p->len;
184 unsigned int regions = cdb[7] << 8 | cdb[8];
185
186 trace_seq_printf(p, "regions=%u", (regions - 8) / 16);
187 trace_seq_putc(p, 0);
188
189 return ret;
190}
191
192static const char *
193scsi_trace_service_action_in(struct trace_seq *p, unsigned char *cdb, int len)
194{
195 const char *ret = p->buffer + p->len, *cmd;
196 sector_t lba = 0;
197 u32 alloc_len = 0;
198
199 switch (SERVICE_ACTION16(cdb)) {
200 case SAI_READ_CAPACITY_16:
201 cmd = "READ_CAPACITY_16";
202 break;
203 case SAI_GET_LBA_STATUS:
204 cmd = "GET_LBA_STATUS";
205 break;
206 default:
207 trace_seq_printf(p, "UNKNOWN");
208 goto out;
209 }
210
211 lba |= ((u64)cdb[2] << 56);
212 lba |= ((u64)cdb[3] << 48);
213 lba |= ((u64)cdb[4] << 40);
214 lba |= ((u64)cdb[5] << 32);
215 lba |= (cdb[6] << 24);
216 lba |= (cdb[7] << 16);
217 lba |= (cdb[8] << 8);
218 lba |= cdb[9];
219 alloc_len |= (cdb[10] << 24);
220 alloc_len |= (cdb[11] << 16);
221 alloc_len |= (cdb[12] << 8);
222 alloc_len |= cdb[13];
223
224 trace_seq_printf(p, "%s lba=%llu alloc_len=%u", cmd,
225 (unsigned long long)lba, alloc_len);
226
227out:
228 trace_seq_putc(p, 0);
229
230 return ret;
231}
232
233static const char *
234scsi_trace_varlen(struct trace_seq *p, unsigned char *cdb, int len)
235{
236 switch (SERVICE_ACTION32(cdb)) {
237 case READ_32:
238 case VERIFY_32:
239 case WRITE_32:
240 case WRITE_SAME_32:
241 return scsi_trace_rw32(p, cdb, len);
242 default:
243 return scsi_trace_misc(p, cdb, len);
244 }
245}
246
247static const char *
248scsi_trace_misc(struct trace_seq *p, unsigned char *cdb, int len)
249{
250 const char *ret = p->buffer + p->len;
251
252 trace_seq_printf(p, "-");
253 trace_seq_putc(p, 0);
254
255 return ret;
256}
257
258const char *
259scsi_trace_parse_cdb(struct trace_seq *p, unsigned char *cdb, int len)
260{
261 switch (cdb[0]) {
262 case READ_6:
263 case WRITE_6:
264 return scsi_trace_rw6(p, cdb, len);
265 case READ_10:
266 case VERIFY:
267 case WRITE_10:
268 case WRITE_SAME:
269 return scsi_trace_rw10(p, cdb, len);
270 case READ_12:
271 case VERIFY_12:
272 case WRITE_12:
273 return scsi_trace_rw12(p, cdb, len);
274 case READ_16:
275 case VERIFY_16:
276 case WRITE_16:
277 case WRITE_SAME_16:
278 return scsi_trace_rw16(p, cdb, len);
279 case UNMAP:
280 return scsi_trace_unmap(p, cdb, len);
281 case SERVICE_ACTION_IN:
282 return scsi_trace_service_action_in(p, cdb, len);
283 case VARIABLE_LENGTH_CMD:
284 return scsi_trace_varlen(p, cdb, len);
285 default:
286 return scsi_trace_misc(p, cdb, len);
287 }
288}
1// SPDX-License-Identifier: GPL-2.0-only
2/*
3 * Copyright (C) 2010 FUJITSU LIMITED
4 * Copyright (C) 2010 Tomohiro Kusumi <kusumi.tomohiro@jp.fujitsu.com>
5 */
6#include <linux/kernel.h>
7#include <linux/trace_seq.h>
8#include <asm/unaligned.h>
9#include <trace/events/scsi.h>
10
11#define SERVICE_ACTION16(cdb) (cdb[1] & 0x1f)
12#define SERVICE_ACTION32(cdb) (get_unaligned_be16(&cdb[8]))
13
14static const char *
15scsi_trace_misc(struct trace_seq *, unsigned char *, int);
16
17static const char *
18scsi_trace_rw6(struct trace_seq *p, unsigned char *cdb, int len)
19{
20 const char *ret = trace_seq_buffer_ptr(p);
21 u32 lba, txlen;
22
23 lba = get_unaligned_be24(&cdb[1]) & 0x1fffff;
24 /*
25 * From SBC-2: a TRANSFER LENGTH field set to zero specifies that 256
26 * logical blocks shall be read (READ(6)) or written (WRITE(6)).
27 */
28 txlen = cdb[4] ? cdb[4] : 256;
29
30 trace_seq_printf(p, "lba=%u txlen=%u", lba, txlen);
31 trace_seq_putc(p, 0);
32
33 return ret;
34}
35
36static const char *
37scsi_trace_rw10(struct trace_seq *p, unsigned char *cdb, int len)
38{
39 const char *ret = trace_seq_buffer_ptr(p);
40 u32 lba, txlen;
41
42 lba = get_unaligned_be32(&cdb[2]);
43 txlen = get_unaligned_be16(&cdb[7]);
44
45 trace_seq_printf(p, "lba=%u txlen=%u protect=%u", lba, txlen,
46 cdb[1] >> 5);
47
48 if (cdb[0] == WRITE_SAME)
49 trace_seq_printf(p, " unmap=%u", cdb[1] >> 3 & 1);
50
51 trace_seq_putc(p, 0);
52
53 return ret;
54}
55
56static const char *
57scsi_trace_rw12(struct trace_seq *p, unsigned char *cdb, int len)
58{
59 const char *ret = trace_seq_buffer_ptr(p);
60 u32 lba, txlen;
61
62 lba = get_unaligned_be32(&cdb[2]);
63 txlen = get_unaligned_be32(&cdb[6]);
64
65 trace_seq_printf(p, "lba=%u txlen=%u protect=%u", lba, txlen,
66 cdb[1] >> 5);
67 trace_seq_putc(p, 0);
68
69 return ret;
70}
71
72static const char *
73scsi_trace_rw16(struct trace_seq *p, unsigned char *cdb, int len)
74{
75 const char *ret = trace_seq_buffer_ptr(p);
76 u64 lba;
77 u32 txlen;
78
79 lba = get_unaligned_be64(&cdb[2]);
80 txlen = get_unaligned_be32(&cdb[10]);
81
82 trace_seq_printf(p, "lba=%llu txlen=%u protect=%u", lba, txlen,
83 cdb[1] >> 5);
84
85 if (cdb[0] == WRITE_SAME_16)
86 trace_seq_printf(p, " unmap=%u", cdb[1] >> 3 & 1);
87
88 trace_seq_putc(p, 0);
89
90 return ret;
91}
92
93static const char *
94scsi_trace_rw32(struct trace_seq *p, unsigned char *cdb, int len)
95{
96 const char *ret = trace_seq_buffer_ptr(p), *cmd;
97 u64 lba;
98 u32 ei_lbrt, txlen;
99
100 switch (SERVICE_ACTION32(cdb)) {
101 case READ_32:
102 cmd = "READ";
103 break;
104 case VERIFY_32:
105 cmd = "VERIFY";
106 break;
107 case WRITE_32:
108 cmd = "WRITE";
109 break;
110 case WRITE_SAME_32:
111 cmd = "WRITE_SAME";
112 break;
113 default:
114 trace_seq_puts(p, "UNKNOWN");
115 goto out;
116 }
117
118 lba = get_unaligned_be64(&cdb[12]);
119 ei_lbrt = get_unaligned_be32(&cdb[20]);
120 txlen = get_unaligned_be32(&cdb[28]);
121
122 trace_seq_printf(p, "%s_32 lba=%llu txlen=%u protect=%u ei_lbrt=%u",
123 cmd, lba, txlen, cdb[10] >> 5, ei_lbrt);
124
125 if (SERVICE_ACTION32(cdb) == WRITE_SAME_32)
126 trace_seq_printf(p, " unmap=%u", cdb[10] >> 3 & 1);
127
128out:
129 trace_seq_putc(p, 0);
130
131 return ret;
132}
133
134static const char *
135scsi_trace_unmap(struct trace_seq *p, unsigned char *cdb, int len)
136{
137 const char *ret = trace_seq_buffer_ptr(p);
138 unsigned int regions = get_unaligned_be16(&cdb[7]);
139
140 trace_seq_printf(p, "regions=%u", (regions - 8) / 16);
141 trace_seq_putc(p, 0);
142
143 return ret;
144}
145
146static const char *
147scsi_trace_service_action_in(struct trace_seq *p, unsigned char *cdb, int len)
148{
149 const char *ret = trace_seq_buffer_ptr(p), *cmd;
150 u64 lba;
151 u32 alloc_len;
152
153 switch (SERVICE_ACTION16(cdb)) {
154 case SAI_READ_CAPACITY_16:
155 cmd = "READ_CAPACITY_16";
156 break;
157 case SAI_GET_LBA_STATUS:
158 cmd = "GET_LBA_STATUS";
159 break;
160 default:
161 trace_seq_puts(p, "UNKNOWN");
162 goto out;
163 }
164
165 lba = get_unaligned_be64(&cdb[2]);
166 alloc_len = get_unaligned_be32(&cdb[10]);
167
168 trace_seq_printf(p, "%s lba=%llu alloc_len=%u", cmd, lba, alloc_len);
169
170out:
171 trace_seq_putc(p, 0);
172
173 return ret;
174}
175
176static const char *
177scsi_trace_maintenance_in(struct trace_seq *p, unsigned char *cdb, int len)
178{
179 const char *ret = trace_seq_buffer_ptr(p), *cmd;
180 u32 alloc_len;
181
182 switch (SERVICE_ACTION16(cdb)) {
183 case MI_REPORT_IDENTIFYING_INFORMATION:
184 cmd = "REPORT_IDENTIFYING_INFORMATION";
185 break;
186 case MI_REPORT_TARGET_PGS:
187 cmd = "REPORT_TARGET_PORT_GROUPS";
188 break;
189 case MI_REPORT_ALIASES:
190 cmd = "REPORT_ALIASES";
191 break;
192 case MI_REPORT_SUPPORTED_OPERATION_CODES:
193 cmd = "REPORT_SUPPORTED_OPERATION_CODES";
194 break;
195 case MI_REPORT_SUPPORTED_TASK_MANAGEMENT_FUNCTIONS:
196 cmd = "REPORT_SUPPORTED_TASK_MANAGEMENT_FUNCTIONS";
197 break;
198 case MI_REPORT_PRIORITY:
199 cmd = "REPORT_PRIORITY";
200 break;
201 case MI_REPORT_TIMESTAMP:
202 cmd = "REPORT_TIMESTAMP";
203 break;
204 case MI_MANAGEMENT_PROTOCOL_IN:
205 cmd = "MANAGEMENT_PROTOCOL_IN";
206 break;
207 default:
208 trace_seq_puts(p, "UNKNOWN");
209 goto out;
210 }
211
212 alloc_len = get_unaligned_be32(&cdb[6]);
213
214 trace_seq_printf(p, "%s alloc_len=%u", cmd, alloc_len);
215
216out:
217 trace_seq_putc(p, 0);
218
219 return ret;
220}
221
222static const char *
223scsi_trace_maintenance_out(struct trace_seq *p, unsigned char *cdb, int len)
224{
225 const char *ret = trace_seq_buffer_ptr(p), *cmd;
226 u32 alloc_len;
227
228 switch (SERVICE_ACTION16(cdb)) {
229 case MO_SET_IDENTIFYING_INFORMATION:
230 cmd = "SET_IDENTIFYING_INFORMATION";
231 break;
232 case MO_SET_TARGET_PGS:
233 cmd = "SET_TARGET_PORT_GROUPS";
234 break;
235 case MO_CHANGE_ALIASES:
236 cmd = "CHANGE_ALIASES";
237 break;
238 case MO_SET_PRIORITY:
239 cmd = "SET_PRIORITY";
240 break;
241 case MO_SET_TIMESTAMP:
242 cmd = "SET_TIMESTAMP";
243 break;
244 case MO_MANAGEMENT_PROTOCOL_OUT:
245 cmd = "MANAGEMENT_PROTOCOL_OUT";
246 break;
247 default:
248 trace_seq_puts(p, "UNKNOWN");
249 goto out;
250 }
251
252 alloc_len = get_unaligned_be32(&cdb[6]);
253
254 trace_seq_printf(p, "%s alloc_len=%u", cmd, alloc_len);
255
256out:
257 trace_seq_putc(p, 0);
258
259 return ret;
260}
261
262static const char *
263scsi_trace_zbc_in(struct trace_seq *p, unsigned char *cdb, int len)
264{
265 const char *ret = trace_seq_buffer_ptr(p), *cmd;
266 u64 zone_id;
267 u32 alloc_len;
268 u8 options;
269
270 switch (SERVICE_ACTION16(cdb)) {
271 case ZI_REPORT_ZONES:
272 cmd = "REPORT_ZONES";
273 break;
274 default:
275 trace_seq_puts(p, "UNKNOWN");
276 goto out;
277 }
278
279 zone_id = get_unaligned_be64(&cdb[2]);
280 alloc_len = get_unaligned_be32(&cdb[10]);
281 options = cdb[14] & 0x3f;
282
283 trace_seq_printf(p, "%s zone=%llu alloc_len=%u options=%u partial=%u",
284 cmd, (unsigned long long)zone_id, alloc_len,
285 options, (cdb[14] >> 7) & 1);
286
287out:
288 trace_seq_putc(p, 0);
289
290 return ret;
291}
292
293static const char *
294scsi_trace_zbc_out(struct trace_seq *p, unsigned char *cdb, int len)
295{
296 const char *ret = trace_seq_buffer_ptr(p), *cmd;
297 u64 zone_id;
298
299 switch (SERVICE_ACTION16(cdb)) {
300 case ZO_CLOSE_ZONE:
301 cmd = "CLOSE_ZONE";
302 break;
303 case ZO_FINISH_ZONE:
304 cmd = "FINISH_ZONE";
305 break;
306 case ZO_OPEN_ZONE:
307 cmd = "OPEN_ZONE";
308 break;
309 case ZO_RESET_WRITE_POINTER:
310 cmd = "RESET_WRITE_POINTER";
311 break;
312 default:
313 trace_seq_puts(p, "UNKNOWN");
314 goto out;
315 }
316
317 zone_id = get_unaligned_be64(&cdb[2]);
318
319 trace_seq_printf(p, "%s zone=%llu all=%u", cmd,
320 (unsigned long long)zone_id, cdb[14] & 1);
321
322out:
323 trace_seq_putc(p, 0);
324
325 return ret;
326}
327
328static const char *
329scsi_trace_varlen(struct trace_seq *p, unsigned char *cdb, int len)
330{
331 switch (SERVICE_ACTION32(cdb)) {
332 case READ_32:
333 case VERIFY_32:
334 case WRITE_32:
335 case WRITE_SAME_32:
336 return scsi_trace_rw32(p, cdb, len);
337 default:
338 return scsi_trace_misc(p, cdb, len);
339 }
340}
341
342static const char *
343scsi_trace_misc(struct trace_seq *p, unsigned char *cdb, int len)
344{
345 const char *ret = trace_seq_buffer_ptr(p);
346
347 trace_seq_putc(p, '-');
348 trace_seq_putc(p, 0);
349
350 return ret;
351}
352
353const char *
354scsi_trace_parse_cdb(struct trace_seq *p, unsigned char *cdb, int len)
355{
356 switch (cdb[0]) {
357 case READ_6:
358 case WRITE_6:
359 return scsi_trace_rw6(p, cdb, len);
360 case READ_10:
361 case VERIFY:
362 case WRITE_10:
363 case WRITE_SAME:
364 return scsi_trace_rw10(p, cdb, len);
365 case READ_12:
366 case VERIFY_12:
367 case WRITE_12:
368 return scsi_trace_rw12(p, cdb, len);
369 case READ_16:
370 case VERIFY_16:
371 case WRITE_16:
372 case WRITE_SAME_16:
373 return scsi_trace_rw16(p, cdb, len);
374 case UNMAP:
375 return scsi_trace_unmap(p, cdb, len);
376 case SERVICE_ACTION_IN_16:
377 return scsi_trace_service_action_in(p, cdb, len);
378 case VARIABLE_LENGTH_CMD:
379 return scsi_trace_varlen(p, cdb, len);
380 case MAINTENANCE_IN:
381 return scsi_trace_maintenance_in(p, cdb, len);
382 case MAINTENANCE_OUT:
383 return scsi_trace_maintenance_out(p, cdb, len);
384 case ZBC_IN:
385 return scsi_trace_zbc_in(p, cdb, len);
386 case ZBC_OUT:
387 return scsi_trace_zbc_out(p, cdb, len);
388 default:
389 return scsi_trace_misc(p, cdb, len);
390 }
391}