Loading...
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/*
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}