Commit | Line | Data |
---|---|---|
2866c82d | 1 | /* |
da751ca9 JA |
2 | * sg engine |
3 | * | |
4 | * IO engine that uses the Linux SG v3 interface to talk to SCSI devices | |
2866c82d | 5 | * |
b4b9665e VF |
6 | * This ioengine can operate in two modes: |
7 | * sync with block devices (/dev/sdX) or | |
8 | * with character devices (/dev/sgY) with direct=1 or sync=1 | |
9 | * async with character devices with direct=0 and sync=0 | |
10 | * | |
11 | * What value does queue() return for the different cases? | |
12 | * queue() return value | |
13 | * In sync mode: | |
14 | * /dev/sdX RWT FIO_Q_COMPLETED | |
15 | * /dev/sgY RWT FIO_Q_COMPLETED | |
16 | * with direct=1 or sync=1 | |
17 | * | |
18 | * In async mode: | |
19 | * /dev/sgY RWT FIO_Q_QUEUED | |
20 | * direct=0 and sync=0 | |
21 | * | |
22 | * Because FIO_SYNCIO is set for this ioengine td_io_queue() will fill in | |
23 | * issue_time *before* each IO is sent to queue() | |
24 | * | |
25 | * Where are the IO counting functions called for the different cases? | |
26 | * | |
27 | * In sync mode: | |
28 | * /dev/sdX (commit==NULL) | |
29 | * RWT | |
30 | * io_u_mark_depth() called in td_io_queue() | |
31 | * io_u_mark_submit/complete() called in td_io_queue() | |
32 | * issue_time set in td_io_queue() | |
33 | * | |
34 | * /dev/sgY with direct=1 or sync=1 (commit does nothing) | |
35 | * RWT | |
36 | * io_u_mark_depth() called in td_io_queue() | |
37 | * io_u_mark_submit/complete() called in queue() | |
38 | * issue_time set in td_io_queue() | |
39 | * | |
40 | * In async mode: | |
41 | * /dev/sgY with direct=0 and sync=0 | |
42 | * RW: read and write operations are submitted in queue() | |
43 | * io_u_mark_depth() called in td_io_commit() | |
44 | * io_u_mark_submit() called in queue() | |
45 | * issue_time set in td_io_queue() | |
46 | * T: trim operations are queued in queue() and submitted in commit() | |
47 | * io_u_mark_depth() called in td_io_commit() | |
48 | * io_u_mark_submit() called in commit() | |
49 | * issue_time set in commit() | |
50 | * | |
2866c82d JA |
51 | */ |
52 | #include <stdio.h> | |
53 | #include <stdlib.h> | |
54 | #include <unistd.h> | |
55 | #include <errno.h> | |
8393ca93 | 56 | #include <poll.h> |
5f350952 JA |
57 | |
58 | #include "../fio.h" | |
52b81b7c | 59 | #include "../optgroup.h" |
2866c82d | 60 | |
34cfcdaf JA |
61 | #ifdef FIO_HAVE_SGIO |
62 | ||
b0dc148e DG |
63 | #ifndef SGV4_FLAG_HIPRI |
64 | #define SGV4_FLAG_HIPRI 0x800 | |
65 | #endif | |
66 | ||
cbdc9353 VF |
67 | enum { |
68 | FIO_SG_WRITE = 1, | |
e8ab121c VF |
69 | FIO_SG_WRITE_VERIFY, |
70 | FIO_SG_WRITE_SAME, | |
91e13ff5 | 71 | FIO_SG_WRITE_SAME_NDOB, |
9917adb5 | 72 | FIO_SG_WRITE_STREAM, |
e8ab121c VF |
73 | FIO_SG_VERIFY_BYTCHK_00, |
74 | FIO_SG_VERIFY_BYTCHK_01, | |
75 | FIO_SG_VERIFY_BYTCHK_11, | |
cbdc9353 | 76 | }; |
52b81b7c KD |
77 | |
78 | struct sg_options { | |
79 | void *pad; | |
b0dc148e | 80 | unsigned int hipri; |
52b81b7c KD |
81 | unsigned int readfua; |
82 | unsigned int writefua; | |
cbdc9353 | 83 | unsigned int write_mode; |
9917adb5 | 84 | uint16_t stream_id; |
52b81b7c KD |
85 | }; |
86 | ||
87 | static struct fio_option options[] = { | |
b0dc148e DG |
88 | { |
89 | .name = "hipri", | |
90 | .lname = "High Priority", | |
91 | .type = FIO_OPT_STR_SET, | |
92 | .off1 = offsetof(struct sg_options, hipri), | |
93 | .help = "Use polled IO completions", | |
94 | .category = FIO_OPT_C_ENGINE, | |
95 | .group = FIO_OPT_G_SG, | |
96 | }, | |
52b81b7c KD |
97 | { |
98 | .name = "readfua", | |
99 | .lname = "sg engine read fua flag support", | |
100 | .type = FIO_OPT_BOOL, | |
101 | .off1 = offsetof(struct sg_options, readfua), | |
102 | .help = "Set FUA flag (force unit access) for all Read operations", | |
103 | .def = "0", | |
104 | .category = FIO_OPT_C_ENGINE, | |
105 | .group = FIO_OPT_G_SG, | |
106 | }, | |
107 | { | |
108 | .name = "writefua", | |
109 | .lname = "sg engine write fua flag support", | |
110 | .type = FIO_OPT_BOOL, | |
111 | .off1 = offsetof(struct sg_options, writefua), | |
112 | .help = "Set FUA flag (force unit access) for all Write operations", | |
113 | .def = "0", | |
114 | .category = FIO_OPT_C_ENGINE, | |
115 | .group = FIO_OPT_G_SG, | |
116 | }, | |
cbdc9353 VF |
117 | { |
118 | .name = "sg_write_mode", | |
119 | .lname = "specify sg write mode", | |
120 | .type = FIO_OPT_STR, | |
121 | .off1 = offsetof(struct sg_options, write_mode), | |
122 | .help = "Specify SCSI WRITE mode", | |
123 | .def = "write", | |
124 | .posval = { | |
125 | { .ival = "write", | |
126 | .oval = FIO_SG_WRITE, | |
127 | .help = "Issue standard SCSI WRITE commands", | |
128 | }, | |
eadf3260 | 129 | { .ival = "write_and_verify", |
cbdc9353 VF |
130 | .oval = FIO_SG_WRITE_VERIFY, |
131 | .help = "Issue SCSI WRITE AND VERIFY commands", | |
132 | }, | |
eadf3260 VF |
133 | { .ival = "verify", |
134 | .oval = FIO_SG_WRITE_VERIFY, | |
135 | .help = "Issue SCSI WRITE AND VERIFY commands. This " | |
136 | "option is deprecated. Use write_and_verify instead.", | |
137 | }, | |
138 | { .ival = "write_same", | |
cbdc9353 VF |
139 | .oval = FIO_SG_WRITE_SAME, |
140 | .help = "Issue SCSI WRITE SAME commands", | |
141 | }, | |
eadf3260 VF |
142 | { .ival = "same", |
143 | .oval = FIO_SG_WRITE_SAME, | |
144 | .help = "Issue SCSI WRITE SAME commands. This " | |
145 | "option is deprecated. Use write_same instead.", | |
146 | }, | |
91e13ff5 VF |
147 | { .ival = "write_same_ndob", |
148 | .oval = FIO_SG_WRITE_SAME_NDOB, | |
149 | .help = "Issue SCSI WRITE SAME(16) commands with NDOB flag set", | |
150 | }, | |
e8ab121c VF |
151 | { .ival = "verify_bytchk_00", |
152 | .oval = FIO_SG_VERIFY_BYTCHK_00, | |
153 | .help = "Issue SCSI VERIFY commands with BYTCHK set to 00", | |
154 | }, | |
155 | { .ival = "verify_bytchk_01", | |
156 | .oval = FIO_SG_VERIFY_BYTCHK_01, | |
157 | .help = "Issue SCSI VERIFY commands with BYTCHK set to 01", | |
158 | }, | |
159 | { .ival = "verify_bytchk_11", | |
160 | .oval = FIO_SG_VERIFY_BYTCHK_11, | |
161 | .help = "Issue SCSI VERIFY commands with BYTCHK set to 11", | |
162 | }, | |
9917adb5 VF |
163 | { .ival = "write_stream", |
164 | .oval = FIO_SG_WRITE_STREAM, | |
165 | .help = "Issue SCSI WRITE STREAM(16) commands", | |
166 | }, | |
cbdc9353 VF |
167 | }, |
168 | .category = FIO_OPT_C_ENGINE, | |
169 | .group = FIO_OPT_G_SG, | |
170 | }, | |
9917adb5 VF |
171 | { |
172 | .name = "stream_id", | |
173 | .lname = "stream id for WRITE STREAM(16) commands", | |
174 | .type = FIO_OPT_INT, | |
175 | .off1 = offsetof(struct sg_options, stream_id), | |
176 | .help = "Stream ID for WRITE STREAM(16) commands", | |
177 | .def = "0", | |
178 | .category = FIO_OPT_C_ENGINE, | |
179 | .group = FIO_OPT_G_SG, | |
180 | }, | |
52b81b7c KD |
181 | { |
182 | .name = NULL, | |
183 | }, | |
184 | }; | |
185 | ||
5ad7be56 KD |
186 | #define MAX_10B_LBA 0xFFFFFFFFULL |
187 | #define SCSI_TIMEOUT_MS 30000 // 30 second timeout; currently no method to override | |
188 | #define MAX_SB 64 // sense block maximum return size | |
aa18e0ec VF |
189 | /* |
190 | #define FIO_SGIO_DEBUG | |
191 | */ | |
5ad7be56 | 192 | |
2866c82d | 193 | struct sgio_cmd { |
fde57152 | 194 | unsigned char cdb[16]; // enhanced from 10 to support 16 byte commands |
5ad7be56 | 195 | unsigned char sb[MAX_SB]; // add sense block to commands |
2866c82d JA |
196 | int nr; |
197 | }; | |
198 | ||
b4b9665e | 199 | struct sgio_trim { |
a824149a | 200 | uint8_t *unmap_param; |
b4b9665e VF |
201 | unsigned int unmap_range_count; |
202 | struct io_u **trim_io_us; | |
203 | }; | |
204 | ||
2866c82d JA |
205 | struct sgio_data { |
206 | struct sgio_cmd *cmds; | |
207 | struct io_u **events; | |
dc0deca2 JA |
208 | struct pollfd *pfds; |
209 | int *fd_flags; | |
210 | void *sgbuf; | |
2866c82d | 211 | unsigned int bs; |
b5af8293 | 212 | int type_checked; |
b4b9665e VF |
213 | struct sgio_trim **trim_queues; |
214 | int current_queue; | |
aa18e0ec | 215 | #ifdef FIO_SGIO_DEBUG |
b4b9665e | 216 | unsigned int *trim_queue_map; |
aa18e0ec | 217 | #endif |
2866c82d JA |
218 | }; |
219 | ||
5f647ee9 VF |
220 | static inline uint16_t sgio_get_be16(uint8_t *buf) |
221 | { | |
222 | return be16_to_cpu(*((uint16_t *) buf)); | |
223 | } | |
224 | ||
a824149a DF |
225 | static inline uint32_t sgio_get_be32(uint8_t *buf) |
226 | { | |
227 | return be32_to_cpu(*((uint32_t *) buf)); | |
228 | } | |
229 | ||
230 | static inline uint64_t sgio_get_be64(uint8_t *buf) | |
231 | { | |
232 | return be64_to_cpu(*((uint64_t *) buf)); | |
233 | } | |
234 | ||
235 | static inline void sgio_set_be16(uint16_t val, uint8_t *buf) | |
236 | { | |
237 | uint16_t t = cpu_to_be16(val); | |
238 | ||
239 | memcpy(buf, &t, sizeof(uint16_t)); | |
240 | } | |
241 | ||
242 | static inline void sgio_set_be32(uint32_t val, uint8_t *buf) | |
243 | { | |
244 | uint32_t t = cpu_to_be32(val); | |
245 | ||
246 | memcpy(buf, &t, sizeof(uint32_t)); | |
247 | } | |
248 | ||
249 | static inline void sgio_set_be64(uint64_t val, uint8_t *buf) | |
250 | { | |
251 | uint64_t t = cpu_to_be64(val); | |
252 | ||
253 | memcpy(buf, &t, sizeof(uint64_t)); | |
254 | } | |
255 | ||
b4b9665e VF |
256 | static inline bool sgio_unbuffered(struct thread_data *td) |
257 | { | |
258 | return (td->o.odirect || td->o.sync_io); | |
259 | } | |
260 | ||
2866c82d JA |
261 | static void sgio_hdr_init(struct sgio_data *sd, struct sg_io_hdr *hdr, |
262 | struct io_u *io_u, int fs) | |
263 | { | |
264 | struct sgio_cmd *sc = &sd->cmds[io_u->index]; | |
265 | ||
266 | memset(hdr, 0, sizeof(*hdr)); | |
267 | memset(sc->cdb, 0, sizeof(sc->cdb)); | |
268 | ||
269 | hdr->interface_id = 'S'; | |
270 | hdr->cmdp = sc->cdb; | |
271 | hdr->cmd_len = sizeof(sc->cdb); | |
5ad7be56 KD |
272 | hdr->sbp = sc->sb; |
273 | hdr->mx_sb_len = sizeof(sc->sb); | |
2866c82d JA |
274 | hdr->pack_id = io_u->index; |
275 | hdr->usr_ptr = io_u; | |
b4b9665e | 276 | hdr->timeout = SCSI_TIMEOUT_MS; |
2866c82d JA |
277 | |
278 | if (fs) { | |
cec6b55d JA |
279 | hdr->dxferp = io_u->xfer_buf; |
280 | hdr->dxfer_len = io_u->xfer_buflen; | |
2866c82d JA |
281 | } |
282 | } | |
283 | ||
adee86c5 JA |
284 | static int pollin_events(struct pollfd *pfds, int fds) |
285 | { | |
286 | int i; | |
287 | ||
288 | for (i = 0; i < fds; i++) | |
289 | if (pfds[i].revents & POLLIN) | |
290 | return 1; | |
291 | ||
292 | return 0; | |
293 | } | |
2866c82d | 294 | |
14d0261e JA |
295 | static int sg_fd_read(int fd, void *data, size_t size) |
296 | { | |
297 | int err = 0; | |
298 | ||
299 | while (size) { | |
300 | ssize_t ret; | |
301 | ||
302 | ret = read(fd, data, size); | |
303 | if (ret < 0) { | |
304 | if (errno == EAGAIN || errno == EINTR) | |
305 | continue; | |
306 | err = errno; | |
307 | break; | |
308 | } else if (!ret) | |
309 | break; | |
310 | else { | |
311 | data += ret; | |
312 | size -= ret; | |
313 | } | |
314 | } | |
315 | ||
316 | if (err) | |
317 | return err; | |
318 | if (size) | |
319 | return EAGAIN; | |
320 | ||
321 | return 0; | |
322 | } | |
323 | ||
e7d2e616 | 324 | static int fio_sgio_getevents(struct thread_data *td, unsigned int min, |
1f440ece JA |
325 | unsigned int max, |
326 | const struct timespec fio_unused *t) | |
2866c82d | 327 | { |
565e784d | 328 | struct sgio_data *sd = td->io_ops_data; |
b4b9665e | 329 | int left = max, eventNum, ret, r = 0, trims = 0; |
dc0deca2 | 330 | void *buf = sd->sgbuf; |
b4b9665e | 331 | unsigned int i, j, events; |
946ff865 | 332 | struct fio_file *f; |
b4b9665e | 333 | struct io_u *io_u; |
2866c82d JA |
334 | |
335 | /* | |
adee86c5 | 336 | * Fill in the file descriptors |
2866c82d | 337 | */ |
adee86c5 JA |
338 | for_each_file(td, f, i) { |
339 | /* | |
340 | * don't block for min events == 0 | |
341 | */ | |
4a851614 | 342 | if (!min) |
3a35845f JA |
343 | sd->fd_flags[i] = fio_set_fd_nonblocking(f->fd, "sg"); |
344 | else | |
345 | sd->fd_flags[i] = -1; | |
4a851614 | 346 | |
dc0deca2 JA |
347 | sd->pfds[i].fd = f->fd; |
348 | sd->pfds[i].events = POLLIN; | |
2866c82d JA |
349 | } |
350 | ||
b4b9665e VF |
351 | /* |
352 | ** There are two counters here: | |
353 | ** - number of SCSI commands completed | |
354 | ** - number of io_us completed | |
355 | ** | |
356 | ** These are the same with reads and writes, but | |
357 | ** could differ with trim/unmap commands because | |
358 | ** a single unmap can include multiple io_us | |
359 | */ | |
360 | ||
361 | while (left > 0) { | |
c97e3cb0 | 362 | char *p; |
adee86c5 | 363 | |
b4b9665e | 364 | dprint(FD_IO, "sgio_getevents: sd %p: min=%d, max=%d, left=%d\n", sd, min, max, left); |
5ad7be56 | 365 | |
2866c82d JA |
366 | do { |
367 | if (!min) | |
368 | break; | |
adee86c5 | 369 | |
2dc1bbeb | 370 | ret = poll(sd->pfds, td->o.nr_files, -1); |
adee86c5 | 371 | if (ret < 0) { |
adee86c5 | 372 | if (!r) |
22819ec2 | 373 | r = -errno; |
e1161c32 | 374 | td_verror(td, errno, "poll"); |
adee86c5 JA |
375 | break; |
376 | } else if (!ret) | |
377 | continue; | |
378 | ||
2dc1bbeb | 379 | if (pollin_events(sd->pfds, td->o.nr_files)) |
2866c82d JA |
380 | break; |
381 | } while (1); | |
382 | ||
adee86c5 | 383 | if (r < 0) |
2866c82d | 384 | break; |
adee86c5 JA |
385 | |
386 | re_read: | |
387 | p = buf; | |
388 | events = 0; | |
389 | for_each_file(td, f, i) { | |
5ad7be56 | 390 | for (eventNum = 0; eventNum < left; eventNum++) { |
14d0261e | 391 | ret = sg_fd_read(f->fd, p, sizeof(struct sg_io_hdr)); |
b4b9665e | 392 | dprint(FD_IO, "sgio_getevents: sg_fd_read ret: %d\n", ret); |
14d0261e JA |
393 | if (ret) { |
394 | r = -ret; | |
395 | td_verror(td, r, "sg_read"); | |
5ad7be56 | 396 | break; |
5ad7be56 | 397 | } |
b4b9665e VF |
398 | io_u = ((struct sg_io_hdr *)p)->usr_ptr; |
399 | if (io_u->ddir == DDIR_TRIM) { | |
400 | events += sd->trim_queues[io_u->index]->unmap_range_count; | |
401 | eventNum += sd->trim_queues[io_u->index]->unmap_range_count - 1; | |
402 | } else | |
403 | events++; | |
404 | ||
14d0261e | 405 | p += sizeof(struct sg_io_hdr); |
b4b9665e | 406 | dprint(FD_IO, "sgio_getevents: events: %d, eventNum: %d, left: %d\n", events, eventNum, left); |
adee86c5 JA |
407 | } |
408 | } | |
409 | ||
14d0261e | 410 | if (r < 0 && !events) |
2866c82d | 411 | break; |
adee86c5 JA |
412 | if (!events) { |
413 | usleep(1000); | |
414 | goto re_read; | |
415 | } | |
2866c82d | 416 | |
2866c82d JA |
417 | left -= events; |
418 | r += events; | |
419 | ||
420 | for (i = 0; i < events; i++) { | |
421 | struct sg_io_hdr *hdr = (struct sg_io_hdr *) buf + i; | |
b4b9665e VF |
422 | sd->events[i + trims] = hdr->usr_ptr; |
423 | io_u = (struct io_u *)(hdr->usr_ptr); | |
5ad7be56 | 424 | |
5ad7be56 | 425 | if (hdr->info & SG_INFO_CHECK) { |
b4b9665e | 426 | /* record if an io error occurred, ignore resid */ |
be660713 | 427 | memcpy(&io_u->hdr, hdr, sizeof(struct sg_io_hdr)); |
b4b9665e VF |
428 | sd->events[i + trims]->error = EIO; |
429 | } | |
430 | ||
431 | if (io_u->ddir == DDIR_TRIM) { | |
432 | struct sgio_trim *st = sd->trim_queues[io_u->index]; | |
aa18e0ec | 433 | #ifdef FIO_SGIO_DEBUG |
b4b9665e | 434 | assert(st->trim_io_us[0] == io_u); |
aa18e0ec | 435 | assert(sd->trim_queue_map[io_u->index] == io_u->index); |
b4b9665e VF |
436 | dprint(FD_IO, "sgio_getevents: reaping %d io_us from trim queue %d\n", st->unmap_range_count, io_u->index); |
437 | dprint(FD_IO, "sgio_getevents: reaped io_u %d and stored in events[%d]\n", io_u->index, i+trims); | |
aa18e0ec | 438 | #endif |
b4b9665e VF |
439 | for (j = 1; j < st->unmap_range_count; j++) { |
440 | ++trims; | |
441 | sd->events[i + trims] = st->trim_io_us[j]; | |
aa18e0ec | 442 | #ifdef FIO_SGIO_DEBUG |
b4b9665e | 443 | dprint(FD_IO, "sgio_getevents: reaped io_u %d and stored in events[%d]\n", st->trim_io_us[j]->index, i+trims); |
aa18e0ec VF |
444 | assert(sd->trim_queue_map[st->trim_io_us[j]->index] == io_u->index); |
445 | #endif | |
b4b9665e VF |
446 | if (hdr->info & SG_INFO_CHECK) { |
447 | /* record if an io error occurred, ignore resid */ | |
448 | memcpy(&st->trim_io_us[j]->hdr, hdr, sizeof(struct sg_io_hdr)); | |
449 | sd->events[i + trims]->error = EIO; | |
450 | } | |
451 | } | |
452 | events -= st->unmap_range_count - 1; | |
453 | st->unmap_range_count = 0; | |
5ad7be56 | 454 | } |
2866c82d JA |
455 | } |
456 | } | |
457 | ||
adee86c5 | 458 | if (!min) { |
affe05a9 | 459 | for_each_file(td, f, i) { |
3a35845f JA |
460 | if (sd->fd_flags[i] == -1) |
461 | continue; | |
462 | ||
affe05a9 JA |
463 | if (fcntl(f->fd, F_SETFL, sd->fd_flags[i]) < 0) |
464 | log_err("fio: sg failed to restore fcntl flags: %s\n", strerror(errno)); | |
465 | } | |
adee86c5 | 466 | } |
2866c82d | 467 | |
2866c82d JA |
468 | return r; |
469 | } | |
470 | ||
2e4ef4fb JA |
471 | static enum fio_q_status fio_sgio_ioctl_doio(struct thread_data *td, |
472 | struct fio_file *f, | |
473 | struct io_u *io_u) | |
2866c82d | 474 | { |
565e784d | 475 | struct sgio_data *sd = td->io_ops_data; |
2866c82d | 476 | struct sg_io_hdr *hdr = &io_u->hdr; |
36167d82 | 477 | int ret; |
2866c82d JA |
478 | |
479 | sd->events[0] = io_u; | |
480 | ||
36167d82 JA |
481 | ret = ioctl(f->fd, SG_IO, hdr); |
482 | if (ret < 0) | |
a05bd42d | 483 | return ret; |
36167d82 | 484 | |
5ad7be56 KD |
485 | /* record if an io error occurred */ |
486 | if (hdr->info & SG_INFO_CHECK) | |
487 | io_u->error = EIO; | |
488 | ||
36167d82 | 489 | return FIO_Q_COMPLETED; |
2866c82d JA |
490 | } |
491 | ||
a999bc49 JA |
492 | static enum fio_q_status fio_sgio_rw_doio(struct thread_data *td, |
493 | struct fio_file *f, | |
b4b9665e | 494 | struct io_u *io_u, int do_sync) |
2866c82d JA |
495 | { |
496 | struct sg_io_hdr *hdr = &io_u->hdr; | |
497 | int ret; | |
498 | ||
53cdc686 | 499 | ret = write(f->fd, hdr, sizeof(*hdr)); |
2866c82d | 500 | if (ret < 0) |
a05bd42d | 501 | return ret; |
2866c82d | 502 | |
2b13e716 | 503 | if (do_sync) { |
a999bc49 JA |
504 | /* |
505 | * We can't just read back the first command that completes | |
506 | * and assume it's the one we need, it could be any command | |
507 | * that is inflight. | |
508 | */ | |
509 | do { | |
510 | struct io_u *__io_u; | |
511 | ||
512 | ret = read(f->fd, hdr, sizeof(*hdr)); | |
513 | if (ret < 0) | |
514 | return ret; | |
515 | ||
7508b394 JA |
516 | __io_u = hdr->usr_ptr; |
517 | ||
a999bc49 JA |
518 | /* record if an io error occurred */ |
519 | if (hdr->info & SG_INFO_CHECK) | |
7508b394 | 520 | __io_u->error = EIO; |
5ad7be56 | 521 | |
a999bc49 JA |
522 | if (__io_u == io_u) |
523 | break; | |
524 | ||
691df596 | 525 | if (io_u_sync_complete(td, __io_u)) |
a999bc49 | 526 | break; |
691df596 | 527 | |
a999bc49 | 528 | } while (1); |
5ad7be56 | 529 | |
36167d82 | 530 | return FIO_Q_COMPLETED; |
2866c82d JA |
531 | } |
532 | ||
36167d82 | 533 | return FIO_Q_QUEUED; |
2866c82d JA |
534 | } |
535 | ||
b4b9665e VF |
536 | static enum fio_q_status fio_sgio_doio(struct thread_data *td, |
537 | struct io_u *io_u, int do_sync) | |
2866c82d | 538 | { |
53cdc686 | 539 | struct fio_file *f = io_u->file; |
b4b9665e | 540 | enum fio_q_status ret; |
53cdc686 | 541 | |
686fbd31 | 542 | if (f->filetype == FIO_TYPE_BLOCK) { |
5ad7be56 | 543 | ret = fio_sgio_ioctl_doio(td, f, io_u); |
a999bc49 JA |
544 | if (io_u->error) |
545 | td_verror(td, io_u->error, __func__); | |
5ad7be56 | 546 | } else { |
a999bc49 JA |
547 | ret = fio_sgio_rw_doio(td, f, io_u, do_sync); |
548 | if (io_u->error && do_sync) | |
c9aeb797 | 549 | td_verror(td, io_u->error, __func__); |
5ad7be56 | 550 | } |
2866c82d | 551 | |
5ad7be56 | 552 | return ret; |
2866c82d JA |
553 | } |
554 | ||
b4b9665e | 555 | static void fio_sgio_rw_lba(struct sg_io_hdr *hdr, unsigned long long lba, |
91e13ff5 | 556 | unsigned long long nr_blocks, bool override16) |
b4b9665e | 557 | { |
91e13ff5 | 558 | if (lba < MAX_10B_LBA && !override16) { |
a824149a DF |
559 | sgio_set_be32((uint32_t) lba, &hdr->cmdp[2]); |
560 | sgio_set_be16((uint16_t) nr_blocks, &hdr->cmdp[7]); | |
b4b9665e | 561 | } else { |
a824149a DF |
562 | sgio_set_be64(lba, &hdr->cmdp[2]); |
563 | sgio_set_be32((uint32_t) nr_blocks, &hdr->cmdp[10]); | |
b4b9665e VF |
564 | } |
565 | ||
566 | return; | |
567 | } | |
568 | ||
2866c82d JA |
569 | static int fio_sgio_prep(struct thread_data *td, struct io_u *io_u) |
570 | { | |
571 | struct sg_io_hdr *hdr = &io_u->hdr; | |
52b81b7c | 572 | struct sg_options *o = td->eo; |
565e784d | 573 | struct sgio_data *sd = td->io_ops_data; |
b4b9665e VF |
574 | unsigned long long nr_blocks, lba; |
575 | int offset; | |
2866c82d | 576 | |
cec6b55d | 577 | if (io_u->xfer_buflen & (sd->bs - 1)) { |
2866c82d JA |
578 | log_err("read/write not sector aligned\n"); |
579 | return EINVAL; | |
580 | } | |
581 | ||
5ad7be56 KD |
582 | nr_blocks = io_u->xfer_buflen / sd->bs; |
583 | lba = io_u->offset / sd->bs; | |
584 | ||
2866c82d | 585 | if (io_u->ddir == DDIR_READ) { |
87dc1ab1 JA |
586 | sgio_hdr_init(sd, hdr, io_u, 1); |
587 | ||
2866c82d | 588 | hdr->dxfer_direction = SG_DXFER_FROM_DEV; |
5ad7be56 KD |
589 | if (lba < MAX_10B_LBA) |
590 | hdr->cmdp[0] = 0x28; // read(10) | |
591 | else | |
592 | hdr->cmdp[0] = 0x88; // read(16) | |
52b81b7c | 593 | |
b0dc148e DG |
594 | if (o->hipri) |
595 | hdr->flags |= SGV4_FLAG_HIPRI; | |
52b81b7c KD |
596 | if (o->readfua) |
597 | hdr->cmdp[1] |= 0x08; | |
598 | ||
91e13ff5 | 599 | fio_sgio_rw_lba(hdr, lba, nr_blocks, false); |
b4b9665e | 600 | |
87dc1ab1 JA |
601 | } else if (io_u->ddir == DDIR_WRITE) { |
602 | sgio_hdr_init(sd, hdr, io_u, 1); | |
603 | ||
2866c82d | 604 | hdr->dxfer_direction = SG_DXFER_TO_DEV; |
cbdc9353 VF |
605 | switch(o->write_mode) { |
606 | case FIO_SG_WRITE: | |
607 | if (lba < MAX_10B_LBA) | |
608 | hdr->cmdp[0] = 0x2a; // write(10) | |
609 | else | |
610 | hdr->cmdp[0] = 0x8a; // write(16) | |
b0dc148e DG |
611 | if (o->hipri) |
612 | hdr->flags |= SGV4_FLAG_HIPRI; | |
cbdc9353 VF |
613 | if (o->writefua) |
614 | hdr->cmdp[1] |= 0x08; | |
615 | break; | |
616 | case FIO_SG_WRITE_VERIFY: | |
617 | if (lba < MAX_10B_LBA) | |
618 | hdr->cmdp[0] = 0x2e; // write and verify(10) | |
619 | else | |
620 | hdr->cmdp[0] = 0x8e; // write and verify(16) | |
621 | break; | |
622 | // BYTCHK is disabled by virtue of the memset in sgio_hdr_init | |
623 | case FIO_SG_WRITE_SAME: | |
624 | hdr->dxfer_len = sd->bs; | |
625 | if (lba < MAX_10B_LBA) | |
626 | hdr->cmdp[0] = 0x41; // write same(10) | |
627 | else | |
628 | hdr->cmdp[0] = 0x93; // write same(16) | |
629 | break; | |
91e13ff5 VF |
630 | case FIO_SG_WRITE_SAME_NDOB: |
631 | hdr->cmdp[0] = 0x93; // write same(16) | |
632 | hdr->cmdp[1] |= 0x1; // no data output buffer | |
633 | hdr->dxfer_len = 0; | |
634 | break; | |
9917adb5 VF |
635 | case FIO_SG_WRITE_STREAM: |
636 | hdr->cmdp[0] = 0x9a; // write stream (16) | |
637 | if (o->writefua) | |
638 | hdr->cmdp[1] |= 0x08; | |
639 | sgio_set_be64(lba, &hdr->cmdp[2]); | |
5f647ee9 | 640 | sgio_set_be16((uint16_t) io_u->file->engine_pos, &hdr->cmdp[10]); |
9917adb5 VF |
641 | sgio_set_be16((uint16_t) nr_blocks, &hdr->cmdp[12]); |
642 | break; | |
e8ab121c VF |
643 | case FIO_SG_VERIFY_BYTCHK_00: |
644 | if (lba < MAX_10B_LBA) | |
645 | hdr->cmdp[0] = 0x2f; // VERIFY(10) | |
646 | else | |
647 | hdr->cmdp[0] = 0x8f; // VERIFY(16) | |
648 | hdr->dxfer_len = 0; | |
649 | break; | |
650 | case FIO_SG_VERIFY_BYTCHK_01: | |
651 | if (lba < MAX_10B_LBA) | |
652 | hdr->cmdp[0] = 0x2f; // VERIFY(10) | |
653 | else | |
654 | hdr->cmdp[0] = 0x8f; // VERIFY(16) | |
655 | hdr->cmdp[1] |= 0x02; // BYTCHK = 01b | |
656 | break; | |
657 | case FIO_SG_VERIFY_BYTCHK_11: | |
658 | if (lba < MAX_10B_LBA) | |
659 | hdr->cmdp[0] = 0x2f; // VERIFY(10) | |
660 | else | |
661 | hdr->cmdp[0] = 0x8f; // VERIFY(16) | |
662 | hdr->cmdp[1] |= 0x06; // BYTCHK = 11b | |
663 | hdr->dxfer_len = sd->bs; | |
664 | break; | |
cbdc9353 | 665 | }; |
b4b9665e | 666 | |
9917adb5 VF |
667 | if (o->write_mode != FIO_SG_WRITE_STREAM) |
668 | fio_sgio_rw_lba(hdr, lba, nr_blocks, | |
669 | o->write_mode == FIO_SG_WRITE_SAME_NDOB); | |
b4b9665e VF |
670 | |
671 | } else if (io_u->ddir == DDIR_TRIM) { | |
672 | struct sgio_trim *st; | |
673 | ||
674 | if (sd->current_queue == -1) { | |
675 | sgio_hdr_init(sd, hdr, io_u, 0); | |
676 | ||
677 | hdr->cmd_len = 10; | |
678 | hdr->dxfer_direction = SG_DXFER_TO_DEV; | |
679 | hdr->cmdp[0] = 0x42; // unmap | |
680 | sd->current_queue = io_u->index; | |
681 | st = sd->trim_queues[sd->current_queue]; | |
682 | hdr->dxferp = st->unmap_param; | |
aa18e0ec | 683 | #ifdef FIO_SGIO_DEBUG |
b4b9665e VF |
684 | assert(sd->trim_queues[io_u->index]->unmap_range_count == 0); |
685 | dprint(FD_IO, "sg: creating new queue based on io_u %d\n", io_u->index); | |
aa18e0ec | 686 | #endif |
b4b9665e VF |
687 | } |
688 | else | |
689 | st = sd->trim_queues[sd->current_queue]; | |
690 | ||
691 | dprint(FD_IO, "sg: adding io_u %d to trim queue %d\n", io_u->index, sd->current_queue); | |
692 | st->trim_io_us[st->unmap_range_count] = io_u; | |
aa18e0ec | 693 | #ifdef FIO_SGIO_DEBUG |
b4b9665e | 694 | sd->trim_queue_map[io_u->index] = sd->current_queue; |
aa18e0ec | 695 | #endif |
b4b9665e VF |
696 | |
697 | offset = 8 + 16 * st->unmap_range_count; | |
a824149a DF |
698 | sgio_set_be64(lba, &st->unmap_param[offset]); |
699 | sgio_set_be32((uint32_t) nr_blocks, &st->unmap_param[offset + 8]); | |
b4b9665e VF |
700 | |
701 | st->unmap_range_count++; | |
702 | ||
703 | } else if (ddir_sync(io_u->ddir)) { | |
87dc1ab1 | 704 | sgio_hdr_init(sd, hdr, io_u, 0); |
87dc1ab1 | 705 | hdr->dxfer_direction = SG_DXFER_NONE; |
5ad7be56 KD |
706 | if (lba < MAX_10B_LBA) |
707 | hdr->cmdp[0] = 0x35; // synccache(10) | |
708 | else | |
709 | hdr->cmdp[0] = 0x91; // synccache(16) | |
b4b9665e VF |
710 | } else |
711 | assert(0); | |
2866c82d | 712 | |
2866c82d JA |
713 | return 0; |
714 | } | |
715 | ||
b4b9665e VF |
716 | static void fio_sgio_unmap_setup(struct sg_io_hdr *hdr, struct sgio_trim *st) |
717 | { | |
a824149a | 718 | uint16_t cnt = st->unmap_range_count * 16; |
b4b9665e | 719 | |
a824149a DF |
720 | hdr->dxfer_len = cnt + 8; |
721 | sgio_set_be16(cnt + 8, &hdr->cmdp[7]); | |
722 | sgio_set_be16(cnt + 6, st->unmap_param); | |
723 | sgio_set_be16(cnt, &st->unmap_param[2]); | |
b4b9665e VF |
724 | |
725 | return; | |
726 | } | |
727 | ||
2e4ef4fb JA |
728 | static enum fio_q_status fio_sgio_queue(struct thread_data *td, |
729 | struct io_u *io_u) | |
2866c82d JA |
730 | { |
731 | struct sg_io_hdr *hdr = &io_u->hdr; | |
b4b9665e | 732 | struct sgio_data *sd = td->io_ops_data; |
f6db4fa5 | 733 | int ret, do_sync = 0; |
2866c82d | 734 | |
7101d9c2 JA |
735 | fio_ro_check(td, io_u); |
736 | ||
b4b9665e | 737 | if (sgio_unbuffered(td) || ddir_sync(io_u->ddir)) |
f6db4fa5 JA |
738 | do_sync = 1; |
739 | ||
b4b9665e VF |
740 | if (io_u->ddir == DDIR_TRIM) { |
741 | if (do_sync || io_u->file->filetype == FIO_TYPE_BLOCK) { | |
742 | struct sgio_trim *st = sd->trim_queues[sd->current_queue]; | |
743 | ||
744 | /* finish cdb setup for unmap because we are | |
745 | ** doing unmap commands synchronously */ | |
aa18e0ec | 746 | #ifdef FIO_SGIO_DEBUG |
b4b9665e VF |
747 | assert(st->unmap_range_count == 1); |
748 | assert(io_u == st->trim_io_us[0]); | |
aa18e0ec | 749 | #endif |
b4b9665e VF |
750 | hdr = &io_u->hdr; |
751 | ||
752 | fio_sgio_unmap_setup(hdr, st); | |
753 | ||
754 | st->unmap_range_count = 0; | |
755 | sd->current_queue = -1; | |
756 | } else | |
757 | /* queue up trim ranges and submit in commit() */ | |
758 | return FIO_Q_QUEUED; | |
759 | } | |
760 | ||
f6db4fa5 | 761 | ret = fio_sgio_doio(td, io_u, do_sync); |
2866c82d JA |
762 | |
763 | if (ret < 0) | |
764 | io_u->error = errno; | |
765 | else if (hdr->status) { | |
766 | io_u->resid = hdr->resid; | |
767 | io_u->error = EIO; | |
b4b9665e VF |
768 | } else if (td->io_ops->commit != NULL) { |
769 | if (do_sync && !ddir_sync(io_u->ddir)) { | |
770 | io_u_mark_submit(td, 1); | |
771 | io_u_mark_complete(td, 1); | |
772 | } else if (io_u->ddir == DDIR_READ || io_u->ddir == DDIR_WRITE) { | |
773 | io_u_mark_submit(td, 1); | |
774 | io_u_queued(td, io_u); | |
775 | } | |
2866c82d JA |
776 | } |
777 | ||
95bcd815 | 778 | if (io_u->error) { |
e1161c32 | 779 | td_verror(td, io_u->error, "xfer"); |
36167d82 | 780 | return FIO_Q_COMPLETED; |
95bcd815 JA |
781 | } |
782 | ||
36167d82 | 783 | return ret; |
2866c82d JA |
784 | } |
785 | ||
b4b9665e VF |
786 | static int fio_sgio_commit(struct thread_data *td) |
787 | { | |
788 | struct sgio_data *sd = td->io_ops_data; | |
789 | struct sgio_trim *st; | |
790 | struct io_u *io_u; | |
791 | struct sg_io_hdr *hdr; | |
792 | struct timespec now; | |
793 | unsigned int i; | |
794 | int ret; | |
795 | ||
796 | if (sd->current_queue == -1) | |
797 | return 0; | |
798 | ||
799 | st = sd->trim_queues[sd->current_queue]; | |
800 | io_u = st->trim_io_us[0]; | |
801 | hdr = &io_u->hdr; | |
802 | ||
803 | fio_sgio_unmap_setup(hdr, st); | |
804 | ||
805 | sd->current_queue = -1; | |
806 | ||
a999bc49 | 807 | ret = fio_sgio_rw_doio(td, io_u->file, io_u, 0); |
b4b9665e | 808 | |
53ee8c17 VF |
809 | if (ret < 0 || hdr->status) { |
810 | int error; | |
811 | ||
812 | if (ret < 0) | |
813 | error = errno; | |
814 | else { | |
815 | error = EIO; | |
816 | ret = -EIO; | |
b4b9665e | 817 | } |
53ee8c17 VF |
818 | |
819 | for (i = 0; i < st->unmap_range_count; i++) { | |
820 | st->trim_io_us[i]->error = error; | |
821 | clear_io_u(td, st->trim_io_us[i]); | |
822 | if (hdr->status) | |
823 | st->trim_io_us[i]->resid = hdr->resid; | |
b4b9665e | 824 | } |
53ee8c17 VF |
825 | |
826 | td_verror(td, error, "xfer"); | |
827 | return ret; | |
b4b9665e VF |
828 | } |
829 | ||
53ee8c17 VF |
830 | if (fio_fill_issue_time(td)) { |
831 | fio_gettime(&now, NULL); | |
832 | for (i = 0; i < st->unmap_range_count; i++) { | |
833 | memcpy(&st->trim_io_us[i]->issue_time, &now, sizeof(now)); | |
834 | io_u_queued(td, io_u); | |
835 | } | |
b4b9665e | 836 | } |
53ee8c17 | 837 | io_u_mark_submit(td, st->unmap_range_count); |
b4b9665e | 838 | |
53ee8c17 | 839 | return 0; |
b4b9665e VF |
840 | } |
841 | ||
2866c82d JA |
842 | static struct io_u *fio_sgio_event(struct thread_data *td, int event) |
843 | { | |
565e784d | 844 | struct sgio_data *sd = td->io_ops_data; |
2866c82d JA |
845 | |
846 | return sd->events[event]; | |
847 | } | |
848 | ||
5ad7be56 KD |
849 | static int fio_sgio_read_capacity(struct thread_data *td, unsigned int *bs, |
850 | unsigned long long *max_lba) | |
2866c82d | 851 | { |
5ad7be56 KD |
852 | /* |
853 | * need to do read capacity operation w/o benefit of sd or | |
854 | * io_u structures, which are not initialized until later. | |
855 | */ | |
856 | struct sg_io_hdr hdr; | |
02ae7bd8 DF |
857 | unsigned long long hlba; |
858 | unsigned int blksz = 0; | |
5ad7be56 KD |
859 | unsigned char cmd[16]; |
860 | unsigned char sb[64]; | |
861 | unsigned char buf[32]; // read capacity return | |
2866c82d | 862 | int ret; |
5ad7be56 | 863 | int fd = -1; |
2866c82d | 864 | |
5ad7be56 | 865 | struct fio_file *f = td->files[0]; |
2866c82d | 866 | |
5ad7be56 KD |
867 | /* open file independent of rest of application */ |
868 | fd = open(f->file_name, O_RDONLY); | |
869 | if (fd < 0) | |
870 | return -errno; | |
2866c82d | 871 | |
5ad7be56 KD |
872 | memset(&hdr, 0, sizeof(hdr)); |
873 | memset(cmd, 0, sizeof(cmd)); | |
874 | memset(sb, 0, sizeof(sb)); | |
875 | memset(buf, 0, sizeof(buf)); | |
2866c82d | 876 | |
5ad7be56 KD |
877 | /* First let's try a 10 byte read capacity. */ |
878 | hdr.interface_id = 'S'; | |
879 | hdr.cmdp = cmd; | |
880 | hdr.cmd_len = 10; | |
881 | hdr.sbp = sb; | |
882 | hdr.mx_sb_len = sizeof(sb); | |
883 | hdr.timeout = SCSI_TIMEOUT_MS; | |
884 | hdr.cmdp[0] = 0x25; // Read Capacity(10) | |
885 | hdr.dxfer_direction = SG_DXFER_FROM_DEV; | |
886 | hdr.dxferp = buf; | |
887 | hdr.dxfer_len = sizeof(buf); | |
888 | ||
889 | ret = ioctl(fd, SG_IO, &hdr); | |
890 | if (ret < 0) { | |
891 | close(fd); | |
2866c82d | 892 | return ret; |
5ad7be56 | 893 | } |
2866c82d | 894 | |
02ae7bd8 DF |
895 | if (hdr.info & SG_INFO_CHECK) { |
896 | /* RCAP(10) might be unsupported by device. Force RCAP(16) */ | |
897 | hlba = MAX_10B_LBA; | |
898 | } else { | |
a824149a DF |
899 | blksz = sgio_get_be32(&buf[4]); |
900 | hlba = sgio_get_be32(buf); | |
02ae7bd8 | 901 | } |
5ad7be56 KD |
902 | |
903 | /* | |
fde57152 TK |
904 | * If max lba masked by MAX_10B_LBA equals MAX_10B_LBA, |
905 | * then need to retry with 16 byte Read Capacity command. | |
5ad7be56 | 906 | */ |
02ae7bd8 | 907 | if (hlba == MAX_10B_LBA) { |
5ad7be56 | 908 | hdr.cmd_len = 16; |
28c43a89 TK |
909 | hdr.cmdp[0] = 0x9e; // service action |
910 | hdr.cmdp[1] = 0x10; // Read Capacity(16) | |
a824149a | 911 | sgio_set_be32(sizeof(buf), &hdr.cmdp[10]); |
5ad7be56 KD |
912 | |
913 | hdr.dxfer_direction = SG_DXFER_FROM_DEV; | |
914 | hdr.dxferp = buf; | |
915 | hdr.dxfer_len = sizeof(buf); | |
916 | ||
917 | ret = ioctl(fd, SG_IO, &hdr); | |
918 | if (ret < 0) { | |
919 | close(fd); | |
920 | return ret; | |
921 | } | |
922 | ||
923 | /* record if an io error occurred */ | |
924 | if (hdr.info & SG_INFO_CHECK) | |
925 | td_verror(td, EIO, "fio_sgio_read_capacity"); | |
926 | ||
a824149a DF |
927 | blksz = sgio_get_be32(&buf[8]); |
928 | hlba = sgio_get_be64(buf); | |
02ae7bd8 DF |
929 | } |
930 | ||
931 | if (blksz) { | |
932 | *bs = blksz; | |
933 | *max_lba = hlba; | |
934 | ret = 0; | |
935 | } else { | |
936 | ret = EIO; | |
5ad7be56 KD |
937 | } |
938 | ||
939 | close(fd); | |
02ae7bd8 | 940 | return ret; |
2866c82d JA |
941 | } |
942 | ||
943 | static void fio_sgio_cleanup(struct thread_data *td) | |
944 | { | |
565e784d | 945 | struct sgio_data *sd = td->io_ops_data; |
b4b9665e | 946 | int i; |
dc0deca2 JA |
947 | |
948 | if (sd) { | |
949 | free(sd->events); | |
950 | free(sd->cmds); | |
951 | free(sd->fd_flags); | |
952 | free(sd->pfds); | |
953 | free(sd->sgbuf); | |
aa18e0ec | 954 | #ifdef FIO_SGIO_DEBUG |
b4b9665e | 955 | free(sd->trim_queue_map); |
aa18e0ec | 956 | #endif |
b4b9665e VF |
957 | |
958 | for (i = 0; i < td->o.iodepth; i++) { | |
959 | free(sd->trim_queues[i]->unmap_param); | |
960 | free(sd->trim_queues[i]->trim_io_us); | |
961 | free(sd->trim_queues[i]); | |
962 | } | |
963 | ||
964 | free(sd->trim_queues); | |
dc0deca2 | 965 | free(sd); |
2866c82d JA |
966 | } |
967 | } | |
968 | ||
969 | static int fio_sgio_init(struct thread_data *td) | |
970 | { | |
971 | struct sgio_data *sd; | |
b4b9665e | 972 | struct sgio_trim *st; |
b0dc148e | 973 | struct sg_io_hdr *h3p; |
b4b9665e | 974 | int i; |
2866c82d | 975 | |
b4b9665e VF |
976 | sd = calloc(1, sizeof(*sd)); |
977 | sd->cmds = calloc(td->o.iodepth, sizeof(struct sgio_cmd)); | |
978 | sd->sgbuf = calloc(td->o.iodepth, sizeof(struct sg_io_hdr)); | |
979 | sd->events = calloc(td->o.iodepth, sizeof(struct io_u *)); | |
980 | sd->pfds = calloc(td->o.nr_files, sizeof(struct pollfd)); | |
981 | sd->fd_flags = calloc(td->o.nr_files, sizeof(int)); | |
5ad7be56 | 982 | sd->type_checked = 0; |
b4b9665e VF |
983 | |
984 | sd->trim_queues = calloc(td->o.iodepth, sizeof(struct sgio_trim *)); | |
985 | sd->current_queue = -1; | |
aa18e0ec | 986 | #ifdef FIO_SGIO_DEBUG |
b4b9665e | 987 | sd->trim_queue_map = calloc(td->o.iodepth, sizeof(int)); |
aa18e0ec | 988 | #endif |
b0dc148e | 989 | for (i = 0, h3p = sd->sgbuf; i < td->o.iodepth; i++, ++h3p) { |
b4b9665e VF |
990 | sd->trim_queues[i] = calloc(1, sizeof(struct sgio_trim)); |
991 | st = sd->trim_queues[i]; | |
992 | st->unmap_param = calloc(td->o.iodepth + 1, sizeof(char[16])); | |
993 | st->unmap_range_count = 0; | |
994 | st->trim_io_us = calloc(td->o.iodepth, sizeof(struct io_u *)); | |
b0dc148e | 995 | h3p->interface_id = 'S'; |
b4b9665e VF |
996 | } |
997 | ||
565e784d | 998 | td->io_ops_data = sd; |
2866c82d | 999 | |
b5af8293 JA |
1000 | /* |
1001 | * we want to do it, regardless of whether odirect is set or not | |
1002 | */ | |
2dc1bbeb | 1003 | td->o.override_sync = 1; |
b5af8293 JA |
1004 | return 0; |
1005 | } | |
1006 | ||
1007 | static int fio_sgio_type_check(struct thread_data *td, struct fio_file *f) | |
1008 | { | |
565e784d | 1009 | struct sgio_data *sd = td->io_ops_data; |
5ad7be56 KD |
1010 | unsigned int bs = 0; |
1011 | unsigned long long max_lba = 0; | |
1012 | ||
686fbd31 | 1013 | if (f->filetype == FIO_TYPE_BLOCK) { |
53cdc686 | 1014 | if (ioctl(f->fd, BLKSSZGET, &bs) < 0) { |
e1161c32 | 1015 | td_verror(td, errno, "ioctl"); |
b5af8293 | 1016 | return 1; |
2866c82d | 1017 | } |
af52b345 | 1018 | } else if (f->filetype == FIO_TYPE_CHAR) { |
b5af8293 | 1019 | int version, ret; |
2866c82d | 1020 | |
53cdc686 | 1021 | if (ioctl(f->fd, SG_GET_VERSION_NUM, &version) < 0) { |
e1161c32 | 1022 | td_verror(td, errno, "ioctl"); |
b5af8293 | 1023 | return 1; |
2866c82d JA |
1024 | } |
1025 | ||
5ad7be56 KD |
1026 | ret = fio_sgio_read_capacity(td, &bs, &max_lba); |
1027 | if (ret) { | |
1028 | td_verror(td, td->error, "fio_sgio_read_capacity"); | |
1029 | log_err("ioengine sg unable to read capacity successfully\n"); | |
b5af8293 | 1030 | return 1; |
5ad7be56 | 1031 | } |
2866c82d | 1032 | } else { |
16ada754 | 1033 | td_verror(td, EINVAL, "wrong file type"); |
30dac136 | 1034 | log_err("ioengine sg only works on block or character devices\n"); |
b5af8293 | 1035 | return 1; |
2866c82d JA |
1036 | } |
1037 | ||
1038 | sd->bs = bs; | |
5ad7be56 | 1039 | // Determine size of commands needed based on max_lba |
166c6b42 TK |
1040 | if (max_lba >= MAX_10B_LBA) { |
1041 | dprint(FD_IO, "sgio_type_check: using 16 byte read/write " | |
1042 | "commands for lba above 0x%016llx/0x%016llx\n", | |
1043 | MAX_10B_LBA, max_lba); | |
5ad7be56 KD |
1044 | } |
1045 | ||
686fbd31 | 1046 | if (f->filetype == FIO_TYPE_BLOCK) { |
36167d82 JA |
1047 | td->io_ops->getevents = NULL; |
1048 | td->io_ops->event = NULL; | |
b4b9665e VF |
1049 | td->io_ops->commit = NULL; |
1050 | /* | |
1051 | ** Setting these functions to null may cause problems | |
1052 | ** with filename=/dev/sda:/dev/sg0 since we are only | |
1053 | ** considering a single file | |
1054 | */ | |
36167d82 | 1055 | } |
5ad7be56 | 1056 | sd->type_checked = 1; |
2866c82d | 1057 | |
2866c82d | 1058 | return 0; |
b5af8293 JA |
1059 | } |
1060 | ||
5f647ee9 VF |
1061 | static int fio_sgio_stream_control(struct fio_file *f, bool open_stream, uint16_t *stream_id) |
1062 | { | |
1063 | struct sg_io_hdr hdr; | |
1064 | unsigned char cmd[16]; | |
1065 | unsigned char sb[64]; | |
1066 | unsigned char buf[8]; | |
1067 | int ret; | |
1068 | ||
1069 | memset(&hdr, 0, sizeof(hdr)); | |
1070 | memset(cmd, 0, sizeof(cmd)); | |
1071 | memset(sb, 0, sizeof(sb)); | |
1072 | memset(buf, 0, sizeof(buf)); | |
1073 | ||
1074 | hdr.interface_id = 'S'; | |
1075 | hdr.cmdp = cmd; | |
1076 | hdr.cmd_len = 16; | |
1077 | hdr.sbp = sb; | |
1078 | hdr.mx_sb_len = sizeof(sb); | |
1079 | hdr.timeout = SCSI_TIMEOUT_MS; | |
1080 | hdr.cmdp[0] = 0x9e; | |
1081 | hdr.dxfer_direction = SG_DXFER_FROM_DEV; | |
1082 | hdr.dxferp = buf; | |
1083 | hdr.dxfer_len = sizeof(buf); | |
1084 | sgio_set_be32(sizeof(buf), &hdr.cmdp[10]); | |
1085 | ||
1086 | if (open_stream) | |
1087 | hdr.cmdp[1] = 0x34; | |
1088 | else { | |
1089 | hdr.cmdp[1] = 0x54; | |
1090 | sgio_set_be16(*stream_id, &hdr.cmdp[4]); | |
1091 | } | |
1092 | ||
1093 | ret = ioctl(f->fd, SG_IO, &hdr); | |
1094 | ||
1095 | if (ret < 0) | |
1096 | return ret; | |
1097 | ||
1098 | if (hdr.info & SG_INFO_CHECK) | |
1099 | return 1; | |
1100 | ||
1101 | if (open_stream) { | |
1102 | *stream_id = sgio_get_be16(&buf[4]); | |
1103 | dprint(FD_FILE, "sgio_stream_control: opened stream %u\n", (unsigned int) *stream_id); | |
1104 | assert(*stream_id != 0); | |
1105 | } else | |
1106 | dprint(FD_FILE, "sgio_stream_control: closed stream %u\n", (unsigned int) *stream_id); | |
1107 | ||
1108 | return 0; | |
1109 | } | |
1110 | ||
b5af8293 JA |
1111 | static int fio_sgio_open(struct thread_data *td, struct fio_file *f) |
1112 | { | |
565e784d | 1113 | struct sgio_data *sd = td->io_ops_data; |
5f647ee9 | 1114 | struct sg_options *o = td->eo; |
b5af8293 JA |
1115 | int ret; |
1116 | ||
1117 | ret = generic_open_file(td, f); | |
1118 | if (ret) | |
1119 | return ret; | |
1120 | ||
15ba640a | 1121 | if (sd && !sd->type_checked && fio_sgio_type_check(td, f)) { |
6977bcd0 | 1122 | ret = generic_close_file(td, f); |
67486df3 | 1123 | return ret; |
b5af8293 JA |
1124 | } |
1125 | ||
5f647ee9 VF |
1126 | if (o->write_mode == FIO_SG_WRITE_STREAM) { |
1127 | if (o->stream_id) | |
1128 | f->engine_pos = o->stream_id; | |
1129 | else { | |
1130 | ret = fio_sgio_stream_control(f, true, (uint16_t *) &f->engine_pos); | |
1131 | if (ret) | |
1132 | return ret; | |
1133 | } | |
1134 | } | |
1135 | ||
b5af8293 | 1136 | return 0; |
2866c82d JA |
1137 | } |
1138 | ||
5f647ee9 VF |
1139 | int fio_sgio_close(struct thread_data *td, struct fio_file *f) |
1140 | { | |
1141 | struct sg_options *o = td->eo; | |
1142 | int ret; | |
1143 | ||
1144 | if (!o->stream_id && o->write_mode == FIO_SG_WRITE_STREAM) { | |
1145 | ret = fio_sgio_stream_control(f, false, (uint16_t *) &f->engine_pos); | |
1146 | if (ret) | |
1147 | return ret; | |
1148 | } | |
1149 | ||
1150 | return generic_close_file(td, f); | |
1151 | } | |
1152 | ||
5ad7be56 KD |
1153 | /* |
1154 | * Build an error string with details about the driver, host or scsi | |
1155 | * error contained in the sg header Caller will use as necessary. | |
1156 | */ | |
0c89abc1 | 1157 | static char *fio_sgio_errdetails(struct thread_data *td, struct io_u *io_u) |
5ad7be56 KD |
1158 | { |
1159 | struct sg_io_hdr *hdr = &io_u->hdr; | |
1160 | #define MAXERRDETAIL 1024 | |
1161 | #define MAXMSGCHUNK 128 | |
fd04fa03 | 1162 | char *msg, msgchunk[MAXMSGCHUNK]; |
5ad7be56 KD |
1163 | int i; |
1164 | ||
efa72f25 | 1165 | msg = calloc(1, MAXERRDETAIL); |
fd04fa03 | 1166 | strcpy(msg, ""); |
5ad7be56 KD |
1167 | |
1168 | /* | |
1169 | * can't seem to find sg_err.h, so I'll just echo the define values | |
1170 | * so others can search on internet to find clearer clues of meaning. | |
1171 | */ | |
1172 | if (hdr->info & SG_INFO_CHECK) { | |
5ad7be56 KD |
1173 | if (hdr->host_status) { |
1174 | snprintf(msgchunk, MAXMSGCHUNK, "SG Host Status: 0x%02x; ", hdr->host_status); | |
1175 | strlcat(msg, msgchunk, MAXERRDETAIL); | |
1176 | switch (hdr->host_status) { | |
1177 | case 0x01: | |
1178 | strlcat(msg, "SG_ERR_DID_NO_CONNECT", MAXERRDETAIL); | |
1179 | break; | |
1180 | case 0x02: | |
1181 | strlcat(msg, "SG_ERR_DID_BUS_BUSY", MAXERRDETAIL); | |
1182 | break; | |
1183 | case 0x03: | |
1184 | strlcat(msg, "SG_ERR_DID_TIME_OUT", MAXERRDETAIL); | |
1185 | break; | |
1186 | case 0x04: | |
1187 | strlcat(msg, "SG_ERR_DID_BAD_TARGET", MAXERRDETAIL); | |
1188 | break; | |
1189 | case 0x05: | |
1190 | strlcat(msg, "SG_ERR_DID_ABORT", MAXERRDETAIL); | |
1191 | break; | |
1192 | case 0x06: | |
1193 | strlcat(msg, "SG_ERR_DID_PARITY", MAXERRDETAIL); | |
1194 | break; | |
1195 | case 0x07: | |
1196 | strlcat(msg, "SG_ERR_DID_ERROR (internal error)", MAXERRDETAIL); | |
1197 | break; | |
1198 | case 0x08: | |
1199 | strlcat(msg, "SG_ERR_DID_RESET", MAXERRDETAIL); | |
1200 | break; | |
1201 | case 0x09: | |
1202 | strlcat(msg, "SG_ERR_DID_BAD_INTR (unexpected)", MAXERRDETAIL); | |
1203 | break; | |
1204 | case 0x0a: | |
1205 | strlcat(msg, "SG_ERR_DID_PASSTHROUGH", MAXERRDETAIL); | |
1206 | break; | |
1207 | case 0x0b: | |
1208 | strlcat(msg, "SG_ERR_DID_SOFT_ERROR (driver retry?)", MAXERRDETAIL); | |
1209 | break; | |
1210 | case 0x0c: | |
1211 | strlcat(msg, "SG_ERR_DID_IMM_RETRY", MAXERRDETAIL); | |
1212 | break; | |
1213 | case 0x0d: | |
1214 | strlcat(msg, "SG_ERR_DID_REQUEUE", MAXERRDETAIL); | |
1215 | break; | |
2ce6c6e5 TK |
1216 | case 0x0e: |
1217 | strlcat(msg, "SG_ERR_DID_TRANSPORT_DISRUPTED", MAXERRDETAIL); | |
1218 | break; | |
1219 | case 0x0f: | |
1220 | strlcat(msg, "SG_ERR_DID_TRANSPORT_FAILFAST", MAXERRDETAIL); | |
1221 | break; | |
1222 | case 0x10: | |
1223 | strlcat(msg, "SG_ERR_DID_TARGET_FAILURE", MAXERRDETAIL); | |
1224 | break; | |
1225 | case 0x11: | |
1226 | strlcat(msg, "SG_ERR_DID_NEXUS_FAILURE", MAXERRDETAIL); | |
1227 | break; | |
1228 | case 0x12: | |
1229 | strlcat(msg, "SG_ERR_DID_ALLOC_FAILURE", MAXERRDETAIL); | |
1230 | break; | |
1231 | case 0x13: | |
1232 | strlcat(msg, "SG_ERR_DID_MEDIUM_ERROR", MAXERRDETAIL); | |
1233 | break; | |
5ad7be56 KD |
1234 | default: |
1235 | strlcat(msg, "Unknown", MAXERRDETAIL); | |
1236 | break; | |
1237 | } | |
1238 | strlcat(msg, ". ", MAXERRDETAIL); | |
1239 | } | |
1240 | if (hdr->driver_status) { | |
1241 | snprintf(msgchunk, MAXMSGCHUNK, "SG Driver Status: 0x%02x; ", hdr->driver_status); | |
1242 | strlcat(msg, msgchunk, MAXERRDETAIL); | |
1243 | switch (hdr->driver_status & 0x0F) { | |
1244 | case 0x01: | |
1245 | strlcat(msg, "SG_ERR_DRIVER_BUSY", MAXERRDETAIL); | |
1246 | break; | |
1247 | case 0x02: | |
1248 | strlcat(msg, "SG_ERR_DRIVER_SOFT", MAXERRDETAIL); | |
1249 | break; | |
1250 | case 0x03: | |
1251 | strlcat(msg, "SG_ERR_DRIVER_MEDIA", MAXERRDETAIL); | |
1252 | break; | |
1253 | case 0x04: | |
1254 | strlcat(msg, "SG_ERR_DRIVER_ERROR", MAXERRDETAIL); | |
1255 | break; | |
1256 | case 0x05: | |
1257 | strlcat(msg, "SG_ERR_DRIVER_INVALID", MAXERRDETAIL); | |
1258 | break; | |
1259 | case 0x06: | |
1260 | strlcat(msg, "SG_ERR_DRIVER_TIMEOUT", MAXERRDETAIL); | |
1261 | break; | |
1262 | case 0x07: | |
1263 | strlcat(msg, "SG_ERR_DRIVER_HARD", MAXERRDETAIL); | |
1264 | break; | |
1265 | case 0x08: | |
1266 | strlcat(msg, "SG_ERR_DRIVER_SENSE", MAXERRDETAIL); | |
1267 | break; | |
1268 | default: | |
1269 | strlcat(msg, "Unknown", MAXERRDETAIL); | |
1270 | break; | |
1271 | } | |
1272 | strlcat(msg, "; ", MAXERRDETAIL); | |
1273 | switch (hdr->driver_status & 0xF0) { | |
1274 | case 0x10: | |
1275 | strlcat(msg, "SG_ERR_SUGGEST_RETRY", MAXERRDETAIL); | |
1276 | break; | |
1277 | case 0x20: | |
1278 | strlcat(msg, "SG_ERR_SUGGEST_ABORT", MAXERRDETAIL); | |
1279 | break; | |
1280 | case 0x30: | |
1281 | strlcat(msg, "SG_ERR_SUGGEST_REMAP", MAXERRDETAIL); | |
1282 | break; | |
1283 | case 0x40: | |
1284 | strlcat(msg, "SG_ERR_SUGGEST_DIE", MAXERRDETAIL); | |
1285 | break; | |
1286 | case 0x80: | |
1287 | strlcat(msg, "SG_ERR_SUGGEST_SENSE", MAXERRDETAIL); | |
1288 | break; | |
1289 | } | |
1290 | strlcat(msg, ". ", MAXERRDETAIL); | |
1291 | } | |
1292 | if (hdr->status) { | |
1293 | snprintf(msgchunk, MAXMSGCHUNK, "SG SCSI Status: 0x%02x; ", hdr->status); | |
1294 | strlcat(msg, msgchunk, MAXERRDETAIL); | |
1295 | // SCSI 3 status codes | |
1296 | switch (hdr->status) { | |
1297 | case 0x02: | |
1298 | strlcat(msg, "CHECK_CONDITION", MAXERRDETAIL); | |
1299 | break; | |
1300 | case 0x04: | |
1301 | strlcat(msg, "CONDITION_MET", MAXERRDETAIL); | |
1302 | break; | |
1303 | case 0x08: | |
1304 | strlcat(msg, "BUSY", MAXERRDETAIL); | |
1305 | break; | |
1306 | case 0x10: | |
1307 | strlcat(msg, "INTERMEDIATE", MAXERRDETAIL); | |
1308 | break; | |
1309 | case 0x14: | |
1310 | strlcat(msg, "INTERMEDIATE_CONDITION_MET", MAXERRDETAIL); | |
1311 | break; | |
1312 | case 0x18: | |
1313 | strlcat(msg, "RESERVATION_CONFLICT", MAXERRDETAIL); | |
1314 | break; | |
1315 | case 0x22: | |
1316 | strlcat(msg, "COMMAND_TERMINATED", MAXERRDETAIL); | |
1317 | break; | |
1318 | case 0x28: | |
1319 | strlcat(msg, "TASK_SET_FULL", MAXERRDETAIL); | |
1320 | break; | |
1321 | case 0x30: | |
1322 | strlcat(msg, "ACA_ACTIVE", MAXERRDETAIL); | |
1323 | break; | |
1324 | case 0x40: | |
1325 | strlcat(msg, "TASK_ABORTED", MAXERRDETAIL); | |
1326 | break; | |
1327 | default: | |
1328 | strlcat(msg, "Unknown", MAXERRDETAIL); | |
1329 | break; | |
1330 | } | |
1331 | strlcat(msg, ". ", MAXERRDETAIL); | |
1332 | } | |
1333 | if (hdr->sb_len_wr) { | |
ac0a7e39 BVA |
1334 | const uint8_t *const sbp = hdr->sbp; |
1335 | ||
5ad7be56 KD |
1336 | snprintf(msgchunk, MAXMSGCHUNK, "Sense Data (%d bytes):", hdr->sb_len_wr); |
1337 | strlcat(msg, msgchunk, MAXERRDETAIL); | |
1338 | for (i = 0; i < hdr->sb_len_wr; i++) { | |
ac0a7e39 | 1339 | snprintf(msgchunk, MAXMSGCHUNK, " %02x", sbp[i]); |
5ad7be56 KD |
1340 | strlcat(msg, msgchunk, MAXERRDETAIL); |
1341 | } | |
1342 | strlcat(msg, ". ", MAXERRDETAIL); | |
1343 | } | |
1344 | if (hdr->resid != 0) { | |
1345 | snprintf(msgchunk, MAXMSGCHUNK, "SG Driver: %d bytes out of %d not transferred. ", hdr->resid, hdr->dxfer_len); | |
1346 | strlcat(msg, msgchunk, MAXERRDETAIL); | |
5ad7be56 | 1347 | } |
b4dbb3ce VF |
1348 | if (hdr->cmdp) { |
1349 | strlcat(msg, "cdb:", MAXERRDETAIL); | |
1350 | for (i = 0; i < hdr->cmd_len; i++) { | |
1351 | snprintf(msgchunk, MAXMSGCHUNK, " %02x", hdr->cmdp[i]); | |
1352 | strlcat(msg, msgchunk, MAXERRDETAIL); | |
1353 | } | |
1354 | strlcat(msg, ". ", MAXERRDETAIL); | |
1355 | if (io_u->ddir == DDIR_TRIM) { | |
1356 | unsigned char *param_list = hdr->dxferp; | |
1357 | strlcat(msg, "dxferp:", MAXERRDETAIL); | |
1358 | for (i = 0; i < hdr->dxfer_len; i++) { | |
1359 | snprintf(msgchunk, MAXMSGCHUNK, " %02x", param_list[i]); | |
1360 | strlcat(msg, msgchunk, MAXERRDETAIL); | |
1361 | } | |
1362 | strlcat(msg, ". ", MAXERRDETAIL); | |
1363 | } | |
1364 | } | |
5ad7be56 KD |
1365 | } |
1366 | ||
fd04fa03 | 1367 | if (!(hdr->info & SG_INFO_CHECK) && !strlen(msg)) |
36833fb0 BVA |
1368 | snprintf(msg, MAXERRDETAIL, "%s", |
1369 | "SG Driver did not report a Host, Driver or Device check"); | |
5ad7be56 | 1370 | |
fd04fa03 | 1371 | return msg; |
5ad7be56 KD |
1372 | } |
1373 | ||
1374 | /* | |
1375 | * get max file size from read capacity. | |
1376 | */ | |
1377 | static int fio_sgio_get_file_size(struct thread_data *td, struct fio_file *f) | |
1378 | { | |
1379 | /* | |
1380 | * get_file_size is being called even before sgio_init is | |
1381 | * called, so none of the sg_io structures are | |
1382 | * initialized in the thread_data yet. So we need to do the | |
1383 | * ReadCapacity without any of those helpers. One of the effects | |
1384 | * is that ReadCapacity may get called 4 times on each open: | |
1385 | * readcap(10) followed by readcap(16) if needed - just to get | |
1386 | * the file size after the init occurs - it will be called | |
1387 | * again when "type_check" is called during structure | |
1388 | * initialization I'm not sure how to prevent this little | |
1389 | * inefficiency. | |
1390 | */ | |
1391 | unsigned int bs = 0; | |
1392 | unsigned long long max_lba = 0; | |
1393 | int ret; | |
1394 | ||
1395 | if (fio_file_size_known(f)) | |
1396 | return 0; | |
1397 | ||
686fbd31 | 1398 | if (f->filetype != FIO_TYPE_BLOCK && f->filetype != FIO_TYPE_CHAR) { |
30dac136 TK |
1399 | td_verror(td, EINVAL, "wrong file type"); |
1400 | log_err("ioengine sg only works on block or character devices\n"); | |
1401 | return 1; | |
1402 | } | |
1403 | ||
5ad7be56 KD |
1404 | ret = fio_sgio_read_capacity(td, &bs, &max_lba); |
1405 | if (ret ) { | |
1406 | td_verror(td, td->error, "fio_sgio_read_capacity"); | |
1407 | log_err("ioengine sg unable to successfully execute read capacity to get block size and maximum lba\n"); | |
1408 | return 1; | |
1409 | } | |
1410 | ||
1411 | f->real_file_size = (max_lba + 1) * bs; | |
1412 | fio_file_set_size_known(f); | |
1413 | return 0; | |
1414 | } | |
1415 | ||
1416 | ||
5f350952 | 1417 | static struct ioengine_ops ioengine = { |
2866c82d JA |
1418 | .name = "sg", |
1419 | .version = FIO_IOOPS_VERSION, | |
1420 | .init = fio_sgio_init, | |
1421 | .prep = fio_sgio_prep, | |
1422 | .queue = fio_sgio_queue, | |
b4b9665e | 1423 | .commit = fio_sgio_commit, |
2866c82d | 1424 | .getevents = fio_sgio_getevents, |
5ad7be56 | 1425 | .errdetails = fio_sgio_errdetails, |
2866c82d JA |
1426 | .event = fio_sgio_event, |
1427 | .cleanup = fio_sgio_cleanup, | |
b5af8293 | 1428 | .open_file = fio_sgio_open, |
5f647ee9 | 1429 | .close_file = fio_sgio_close, |
fde57152 | 1430 | .get_file_size = fio_sgio_get_file_size, |
d72b10e3 | 1431 | .flags = FIO_SYNCIO | FIO_RAWIO | FIO_RO_NEEDS_RW_OPEN, |
52b81b7c KD |
1432 | .options = options, |
1433 | .option_struct_size = sizeof(struct sg_options) | |
2866c82d | 1434 | }; |
34cfcdaf JA |
1435 | |
1436 | #else /* FIO_HAVE_SGIO */ | |
1437 | ||
1438 | /* | |
1439 | * When we have a proper configure system in place, we simply wont build | |
1440 | * and install this io engine. For now install a crippled version that | |
1441 | * just complains and fails to load. | |
1442 | */ | |
1443 | static int fio_sgio_init(struct thread_data fio_unused *td) | |
1444 | { | |
a3edaf76 | 1445 | log_err("fio: ioengine sg not available\n"); |
34cfcdaf JA |
1446 | return 1; |
1447 | } | |
1448 | ||
5f350952 | 1449 | static struct ioengine_ops ioengine = { |
d0c70934 | 1450 | .name = "sg", |
34cfcdaf JA |
1451 | .version = FIO_IOOPS_VERSION, |
1452 | .init = fio_sgio_init, | |
1453 | }; | |
1454 | ||
1455 | #endif | |
5f350952 JA |
1456 | |
1457 | static void fio_init fio_sgio_register(void) | |
1458 | { | |
1459 | register_ioengine(&ioengine); | |
1460 | } | |
1461 | ||
1462 | static void fio_exit fio_sgio_unregister(void) | |
1463 | { | |
1464 | unregister_ioengine(&ioengine); | |
1465 | } |