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bf816235 KT |
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 | ||
c446c1f9 MP |
22 | #define SERVICE_ACTION16(cdb) (cdb[1] & 0x1f) |
23 | #define SERVICE_ACTION32(cdb) ((cdb[8] << 8) | cdb[9]) | |
bf816235 KT |
24 | |
25 | static const char * | |
26 | scsi_trace_misc(struct trace_seq *, unsigned char *, int); | |
27 | ||
28 | static const char * | |
29 | scsi_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 | ||
46 | static const char * | |
47 | scsi_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 | ||
c446c1f9 MP |
59 | trace_seq_printf(p, "lba=%llu txlen=%llu protect=%u", |
60 | (unsigned long long)lba, (unsigned long long)txlen, | |
61 | cdb[1] >> 5); | |
c498bf1a MP |
62 | |
63 | if (cdb[0] == WRITE_SAME) | |
64 | trace_seq_printf(p, " unmap=%u", cdb[1] >> 3 & 1); | |
65 | ||
bf816235 KT |
66 | trace_seq_putc(p, 0); |
67 | ||
68 | return ret; | |
69 | } | |
70 | ||
71 | static const char * | |
72 | scsi_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 | ||
c446c1f9 MP |
86 | trace_seq_printf(p, "lba=%llu txlen=%llu protect=%u", |
87 | (unsigned long long)lba, (unsigned long long)txlen, | |
88 | cdb[1] >> 5); | |
bf816235 KT |
89 | trace_seq_putc(p, 0); |
90 | ||
91 | return ret; | |
92 | } | |
93 | ||
94 | static const char * | |
95 | scsi_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 | ||
c446c1f9 MP |
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 | ||
bf816235 KT |
120 | trace_seq_putc(p, 0); |
121 | ||
122 | return ret; | |
123 | } | |
124 | ||
125 | static const char * | |
126 | scsi_trace_rw32(struct trace_seq *p, unsigned char *cdb, int len) | |
127 | { | |
c446c1f9 | 128 | const char *ret = p->buffer + p->len, *cmd; |
bf816235 | 129 | sector_t lba = 0, txlen = 0; |
c446c1f9 MP |
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 | } | |
bf816235 KT |
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]; | |
c446c1f9 MP |
158 | ei_lbrt |= (cdb[20] << 24); |
159 | ei_lbrt |= (cdb[21] << 16); | |
160 | ei_lbrt |= (cdb[22] << 8); | |
161 | ei_lbrt |= cdb[23]; | |
bf816235 KT |
162 | txlen |= (cdb[28] << 24); |
163 | txlen |= (cdb[29] << 16); | |
164 | txlen |= (cdb[30] << 8); | |
165 | txlen |= cdb[31]; | |
166 | ||
c446c1f9 MP |
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 | ||
174 | out: | |
175 | trace_seq_putc(p, 0); | |
176 | ||
177 | return ret; | |
178 | } | |
179 | ||
180 | static const char * | |
181 | scsi_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 | ||
192 | static const char * | |
193 | scsi_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); | |
bf816235 | 226 | |
c446c1f9 | 227 | out: |
bf816235 KT |
228 | trace_seq_putc(p, 0); |
229 | ||
230 | return ret; | |
231 | } | |
232 | ||
233 | static const char * | |
234 | scsi_trace_varlen(struct trace_seq *p, unsigned char *cdb, int len) | |
235 | { | |
c446c1f9 | 236 | switch (SERVICE_ACTION32(cdb)) { |
bf816235 | 237 | case READ_32: |
c446c1f9 | 238 | case VERIFY_32: |
bf816235 | 239 | case WRITE_32: |
c446c1f9 | 240 | case WRITE_SAME_32: |
bf816235 KT |
241 | return scsi_trace_rw32(p, cdb, len); |
242 | default: | |
243 | return scsi_trace_misc(p, cdb, len); | |
244 | } | |
245 | } | |
246 | ||
247 | static const char * | |
248 | scsi_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 | ||
258 | const char * | |
259 | scsi_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: | |
c446c1f9 | 266 | case VERIFY: |
bf816235 | 267 | case WRITE_10: |
c446c1f9 | 268 | case WRITE_SAME: |
bf816235 KT |
269 | return scsi_trace_rw10(p, cdb, len); |
270 | case READ_12: | |
c446c1f9 | 271 | case VERIFY_12: |
bf816235 KT |
272 | case WRITE_12: |
273 | return scsi_trace_rw12(p, cdb, len); | |
274 | case READ_16: | |
c446c1f9 | 275 | case VERIFY_16: |
bf816235 | 276 | case WRITE_16: |
c446c1f9 | 277 | case WRITE_SAME_16: |
bf816235 | 278 | return scsi_trace_rw16(p, cdb, len); |
c446c1f9 MP |
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); | |
bf816235 KT |
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 | } |