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target/arm: Define an IDAU interface
[qemu/ar7.git] / hw / scsi / scsi-disk.c
blob49d2559d93ffd1a0e39b1a10e54ddcda27eda110
1 /*
2 * SCSI Device emulation
3 *
4 * Copyright (c) 2006 CodeSourcery.
5 * Based on code by Fabrice Bellard
6 *
7 * Written by Paul Brook
8 * Modifications:
9 * 2009-Dec-12 Artyom Tarasenko : implemented stamdard inquiry for the case
10 * when the allocation length of CDB is smaller
11 * than 36.
12 * 2009-Oct-13 Artyom Tarasenko : implemented the block descriptor in the
13 * MODE SENSE response.
14 *
15 * This code is licensed under the LGPL.
16 *
17 * Note that this file only handles the SCSI architecture model and device
18 * commands. Emulation of interface/link layer protocols is handled by
19 * the host adapter emulator.
20 */
21
22 //#define DEBUG_SCSI
23
24 #ifdef DEBUG_SCSI
25 #define DPRINTF(fmt, ...) \
26 do { printf("scsi-disk: " fmt , ## __VA_ARGS__); } while (0)
27 #else
28 #define DPRINTF(fmt, ...) do {} while(0)
29 #endif
30
31 #include "qemu/osdep.h"
32 #include "qapi/error.h"
33 #include "qemu/error-report.h"
34 #include "hw/scsi/scsi.h"
35 #include "scsi/constants.h"
36 #include "sysemu/sysemu.h"
37 #include "sysemu/block-backend.h"
38 #include "sysemu/blockdev.h"
39 #include "hw/block/block.h"
40 #include "sysemu/dma.h"
41 #include "qemu/cutils.h"
42
43 #ifdef __linux
44 #include <scsi/sg.h>
45 #endif
46
47 #define SCSI_WRITE_SAME_MAX 524288
48 #define SCSI_DMA_BUF_SIZE 131072
49 #define SCSI_MAX_INQUIRY_LEN 256
50 #define SCSI_MAX_MODE_LEN 256
51
52 #define DEFAULT_DISCARD_GRANULARITY 4096
53 #define DEFAULT_MAX_UNMAP_SIZE (1 << 30) /* 1 GB */
54 #define DEFAULT_MAX_IO_SIZE INT_MAX /* 2 GB - 1 block */
55
56 #define TYPE_SCSI_DISK_BASE "scsi-disk-base"
57
58 #define SCSI_DISK_BASE(obj) \
59 OBJECT_CHECK(SCSIDiskState, (obj), TYPE_SCSI_DISK_BASE)
60 #define SCSI_DISK_BASE_CLASS(klass) \
61 OBJECT_CLASS_CHECK(SCSIDiskClass, (klass), TYPE_SCSI_DISK_BASE)
62 #define SCSI_DISK_BASE_GET_CLASS(obj) \
63 OBJECT_GET_CLASS(SCSIDiskClass, (obj), TYPE_SCSI_DISK_BASE)
64
65 typedef struct SCSIDiskClass {
66 SCSIDeviceClass parent_class;
67 DMAIOFunc *dma_readv;
68 DMAIOFunc *dma_writev;
69 bool (*need_fua_emulation)(SCSICommand *cmd);
70 } SCSIDiskClass;
71
72 typedef struct SCSIDiskReq {
73 SCSIRequest req;
74 /* Both sector and sector_count are in terms of qemu 512 byte blocks. */
75 uint64_t sector;
76 uint32_t sector_count;
77 uint32_t buflen;
78 bool started;
79 bool need_fua_emulation;
80 struct iovec iov;
81 QEMUIOVector qiov;
82 BlockAcctCookie acct;
83 unsigned char *status;
84 } SCSIDiskReq;
85
86 #define SCSI_DISK_F_REMOVABLE 0
87 #define SCSI_DISK_F_DPOFUA 1
88 #define SCSI_DISK_F_NO_REMOVABLE_DEVOPS 2
89
90 typedef struct SCSIDiskState
91 {
92 SCSIDevice qdev;
93 uint32_t features;
94 bool media_changed;
95 bool media_event;
96 bool eject_request;
97 uint16_t port_index;
98 uint64_t max_unmap_size;
99 uint64_t max_io_size;
100 QEMUBH *bh;
101 char *version;
102 char *serial;
103 char *vendor;
104 char *product;
105 bool tray_open;
106 bool tray_locked;
107 /*
108 * 0x0000 - rotation rate not reported
109 * 0x0001 - non-rotating medium (SSD)
110 * 0x0002-0x0400 - reserved
111 * 0x0401-0xffe - rotations per minute
112 * 0xffff - reserved
113 */
114 uint16_t rotation_rate;
115 } SCSIDiskState;
116
117 static bool scsi_handle_rw_error(SCSIDiskReq *r, int error, bool acct_failed);
118
119 static void scsi_free_request(SCSIRequest *req)
120 {
121 SCSIDiskReq *r = DO_UPCAST(SCSIDiskReq, req, req);
122
123 qemu_vfree(r->iov.iov_base);
124 }
125
126 /* Helper function for command completion with sense. */
127 static void scsi_check_condition(SCSIDiskReq *r, SCSISense sense)
128 {
129 DPRINTF("Command complete tag=0x%x sense=%d/%d/%d\n",
130 r->req.tag, sense.key, sense.asc, sense.ascq);
131 scsi_req_build_sense(&r->req, sense);
132 scsi_req_complete(&r->req, CHECK_CONDITION);
133 }
134
135 static void scsi_init_iovec(SCSIDiskReq *r, size_t size)
136 {
137 SCSIDiskState *s = DO_UPCAST(SCSIDiskState, qdev, r->req.dev);
138
139 if (!r->iov.iov_base) {
140 r->buflen = size;
141 r->iov.iov_base = blk_blockalign(s->qdev.conf.blk, r->buflen);
142 }
143 r->iov.iov_len = MIN(r->sector_count * 512, r->buflen);
144 qemu_iovec_init_external(&r->qiov, &r->iov, 1);
145 }
146
147 static void scsi_disk_save_request(QEMUFile *f, SCSIRequest *req)
148 {
149 SCSIDiskReq *r = DO_UPCAST(SCSIDiskReq, req, req);
150
151 qemu_put_be64s(f, &r->sector);
152 qemu_put_be32s(f, &r->sector_count);
153 qemu_put_be32s(f, &r->buflen);
154 if (r->buflen) {
155 if (r->req.cmd.mode == SCSI_XFER_TO_DEV) {
156 qemu_put_buffer(f, r->iov.iov_base, r->iov.iov_len);
157 } else if (!req->retry) {
158 uint32_t len = r->iov.iov_len;
159 qemu_put_be32s(f, &len);
160 qemu_put_buffer(f, r->iov.iov_base, r->iov.iov_len);
161 }
162 }
163 }
164
165 static void scsi_disk_load_request(QEMUFile *f, SCSIRequest *req)
166 {
167 SCSIDiskReq *r = DO_UPCAST(SCSIDiskReq, req, req);
168
169 qemu_get_be64s(f, &r->sector);
170 qemu_get_be32s(f, &r->sector_count);
171 qemu_get_be32s(f, &r->buflen);
172 if (r->buflen) {
173 scsi_init_iovec(r, r->buflen);
174 if (r->req.cmd.mode == SCSI_XFER_TO_DEV) {
175 qemu_get_buffer(f, r->iov.iov_base, r->iov.iov_len);
176 } else if (!r->req.retry) {
177 uint32_t len;
178 qemu_get_be32s(f, &len);
179 r->iov.iov_len = len;
180 assert(r->iov.iov_len <= r->buflen);
181 qemu_get_buffer(f, r->iov.iov_base, r->iov.iov_len);
182 }
183 }
184
185 qemu_iovec_init_external(&r->qiov, &r->iov, 1);
186 }
187
188 static bool scsi_disk_req_check_error(SCSIDiskReq *r, int ret, bool acct_failed)
189 {
190 if (r->req.io_canceled) {
191 scsi_req_cancel_complete(&r->req);
192 return true;
193 }
194
195 if (ret < 0 || (r->status && *r->status)) {
196 return scsi_handle_rw_error(r, -ret, acct_failed);
197 }
198
199 return false;
200 }
201
202 static void scsi_aio_complete(void *opaque, int ret)
203 {
204 SCSIDiskReq *r = (SCSIDiskReq *)opaque;
205 SCSIDiskState *s = DO_UPCAST(SCSIDiskState, qdev, r->req.dev);
206
207 assert(r->req.aiocb != NULL);
208 r->req.aiocb = NULL;
209 aio_context_acquire(blk_get_aio_context(s->qdev.conf.blk));
210 if (scsi_disk_req_check_error(r, ret, true)) {
211 goto done;
212 }
213
214 block_acct_done(blk_get_stats(s->qdev.conf.blk), &r->acct);
215 scsi_req_complete(&r->req, GOOD);
216
217 done:
218 aio_context_release(blk_get_aio_context(s->qdev.conf.blk));
219 scsi_req_unref(&r->req);
220 }
221
222 static bool scsi_is_cmd_fua(SCSICommand *cmd)
223 {
224 switch (cmd->buf[0]) {
225 case READ_10:
226 case READ_12:
227 case READ_16:
228 case WRITE_10:
229 case WRITE_12:
230 case WRITE_16:
231 return (cmd->buf[1] & 8) != 0;
232
233 case VERIFY_10:
234 case VERIFY_12:
235 case VERIFY_16:
236 case WRITE_VERIFY_10:
237 case WRITE_VERIFY_12:
238 case WRITE_VERIFY_16:
239 return true;
240
241 case READ_6:
242 case WRITE_6:
243 default:
244 return false;
245 }
246 }
247
248 static void scsi_write_do_fua(SCSIDiskReq *r)
249 {
250 SCSIDiskState *s = DO_UPCAST(SCSIDiskState, qdev, r->req.dev);
251
252 assert(r->req.aiocb == NULL);
253 assert(!r->req.io_canceled);
254
255 if (r->need_fua_emulation) {
256 block_acct_start(blk_get_stats(s->qdev.conf.blk), &r->acct, 0,
257 BLOCK_ACCT_FLUSH);
258 r->req.aiocb = blk_aio_flush(s->qdev.conf.blk, scsi_aio_complete, r);
259 return;
260 }
261
262 scsi_req_complete(&r->req, GOOD);
263 scsi_req_unref(&r->req);
264 }
265
266 static void scsi_dma_complete_noio(SCSIDiskReq *r, int ret)
267 {
268 assert(r->req.aiocb == NULL);
269 if (scsi_disk_req_check_error(r, ret, false)) {
270 goto done;
271 }
272
273 r->sector += r->sector_count;
274 r->sector_count = 0;
275 if (r->req.cmd.mode == SCSI_XFER_TO_DEV) {
276 scsi_write_do_fua(r);
277 return;
278 } else {
279 scsi_req_complete(&r->req, GOOD);
280 }
281
282 done:
283 scsi_req_unref(&r->req);
284 }
285
286 static void scsi_dma_complete(void *opaque, int ret)
287 {
288 SCSIDiskReq *r = (SCSIDiskReq *)opaque;
289 SCSIDiskState *s = DO_UPCAST(SCSIDiskState, qdev, r->req.dev);
290
291 assert(r->req.aiocb != NULL);
292 r->req.aiocb = NULL;
293
294 aio_context_acquire(blk_get_aio_context(s->qdev.conf.blk));
295 if (ret < 0) {
296 block_acct_failed(blk_get_stats(s->qdev.conf.blk), &r->acct);
297 } else {
298 block_acct_done(blk_get_stats(s->qdev.conf.blk), &r->acct);
299 }
300 scsi_dma_complete_noio(r, ret);
301 aio_context_release(blk_get_aio_context(s->qdev.conf.blk));
302 }
303
304 static void scsi_read_complete(void * opaque, int ret)
305 {
306 SCSIDiskReq *r = (SCSIDiskReq *)opaque;
307 SCSIDiskState *s = DO_UPCAST(SCSIDiskState, qdev, r->req.dev);
308 int n;
309
310 assert(r->req.aiocb != NULL);
311 r->req.aiocb = NULL;
312 aio_context_acquire(blk_get_aio_context(s->qdev.conf.blk));
313 if (scsi_disk_req_check_error(r, ret, true)) {
314 goto done;
315 }
316
317 block_acct_done(blk_get_stats(s->qdev.conf.blk), &r->acct);
318 DPRINTF("Data ready tag=0x%x len=%zd\n", r->req.tag, r->qiov.size);
319
320 n = r->qiov.size / 512;
321 r->sector += n;
322 r->sector_count -= n;
323 scsi_req_data(&r->req, r->qiov.size);
324
325 done:
326 scsi_req_unref(&r->req);
327 aio_context_release(blk_get_aio_context(s->qdev.conf.blk));
328 }
329
330 /* Actually issue a read to the block device. */
331 static void scsi_do_read(SCSIDiskReq *r, int ret)
332 {
333 SCSIDiskState *s = DO_UPCAST(SCSIDiskState, qdev, r->req.dev);
334 SCSIDiskClass *sdc = (SCSIDiskClass *) object_get_class(OBJECT(s));
335
336 assert (r->req.aiocb == NULL);
337 if (scsi_disk_req_check_error(r, ret, false)) {
338 goto done;
339 }
340
341 /* The request is used as the AIO opaque value, so add a ref. */
342 scsi_req_ref(&r->req);
343
344 if (r->req.sg) {
345 dma_acct_start(s->qdev.conf.blk, &r->acct, r->req.sg, BLOCK_ACCT_READ);
346 r->req.resid -= r->req.sg->size;
347 r->req.aiocb = dma_blk_io(blk_get_aio_context(s->qdev.conf.blk),
348 r->req.sg, r->sector << BDRV_SECTOR_BITS,
349 BDRV_SECTOR_SIZE,
350 sdc->dma_readv, r, scsi_dma_complete, r,
351 DMA_DIRECTION_FROM_DEVICE);
352 } else {
353 scsi_init_iovec(r, SCSI_DMA_BUF_SIZE);
354 block_acct_start(blk_get_stats(s->qdev.conf.blk), &r->acct,
355 r->qiov.size, BLOCK_ACCT_READ);
356 r->req.aiocb = sdc->dma_readv(r->sector << BDRV_SECTOR_BITS, &r->qiov,
357 scsi_read_complete, r, r);
358 }
359
360 done:
361 scsi_req_unref(&r->req);
362 }
363
364 static void scsi_do_read_cb(void *opaque, int ret)
365 {
366 SCSIDiskReq *r = (SCSIDiskReq *)opaque;
367 SCSIDiskState *s = DO_UPCAST(SCSIDiskState, qdev, r->req.dev);
368
369 assert (r->req.aiocb != NULL);
370 r->req.aiocb = NULL;
371
372 aio_context_acquire(blk_get_aio_context(s->qdev.conf.blk));
373 if (ret < 0) {
374 block_acct_failed(blk_get_stats(s->qdev.conf.blk), &r->acct);
375 } else {
376 block_acct_done(blk_get_stats(s->qdev.conf.blk), &r->acct);
377 }
378 scsi_do_read(opaque, ret);
379 aio_context_release(blk_get_aio_context(s->qdev.conf.blk));
380 }
381
382 /* Read more data from scsi device into buffer. */
383 static void scsi_read_data(SCSIRequest *req)
384 {
385 SCSIDiskReq *r = DO_UPCAST(SCSIDiskReq, req, req);
386 SCSIDiskState *s = DO_UPCAST(SCSIDiskState, qdev, r->req.dev);
387 bool first;
388
389 DPRINTF("Read sector_count=%d\n", r->sector_count);
390 if (r->sector_count == 0) {
391 /* This also clears the sense buffer for REQUEST SENSE. */
392 scsi_req_complete(&r->req, GOOD);
393 return;
394 }
395
396 /* No data transfer may already be in progress */
397 assert(r->req.aiocb == NULL);
398
399 /* The request is used as the AIO opaque value, so add a ref. */
400 scsi_req_ref(&r->req);
401 if (r->req.cmd.mode == SCSI_XFER_TO_DEV) {
402 DPRINTF("Data transfer direction invalid\n");
403 scsi_read_complete(r, -EINVAL);
404 return;
405 }
406
407 if (!blk_is_available(req->dev->conf.blk)) {
408 scsi_read_complete(r, -ENOMEDIUM);
409 return;
410 }
411
412 first = !r->started;
413 r->started = true;
414 if (first && r->need_fua_emulation) {
415 block_acct_start(blk_get_stats(s->qdev.conf.blk), &r->acct, 0,
416 BLOCK_ACCT_FLUSH);
417 r->req.aiocb = blk_aio_flush(s->qdev.conf.blk, scsi_do_read_cb, r);
418 } else {
419 scsi_do_read(r, 0);
420 }
421 }
422
423 /*
424 * scsi_handle_rw_error has two return values. False means that the error
425 * must be ignored, true means that the error has been processed and the
426 * caller should not do anything else for this request. Note that
427 * scsi_handle_rw_error always manages its reference counts, independent
428 * of the return value.
429 */
430 static bool scsi_handle_rw_error(SCSIDiskReq *r, int error, bool acct_failed)
431 {
432 bool is_read = (r->req.cmd.mode == SCSI_XFER_FROM_DEV);
433 SCSIDiskState *s = DO_UPCAST(SCSIDiskState, qdev, r->req.dev);
434 BlockErrorAction action = blk_get_error_action(s->qdev.conf.blk,
435 is_read, error);
436
437 if (action == BLOCK_ERROR_ACTION_REPORT) {
438 if (acct_failed) {
439 block_acct_failed(blk_get_stats(s->qdev.conf.blk), &r->acct);
440 }
441 switch (error) {
442 case 0:
443 /* The command has run, no need to fake sense. */
444 assert(r->status && *r->status);
445 scsi_req_complete(&r->req, *r->status);
446 break;
447 case ENOMEDIUM:
448 scsi_check_condition(r, SENSE_CODE(NO_MEDIUM));
449 break;
450 case ENOMEM:
451 scsi_check_condition(r, SENSE_CODE(TARGET_FAILURE));
452 break;
453 case EINVAL:
454 scsi_check_condition(r, SENSE_CODE(INVALID_FIELD));
455 break;
456 case ENOSPC:
457 scsi_check_condition(r, SENSE_CODE(SPACE_ALLOC_FAILED));
458 break;
459 default:
460 scsi_check_condition(r, SENSE_CODE(IO_ERROR));
461 break;
462 }
463 }
464 if (!error) {
465 assert(r->status && *r->status);
466 error = scsi_sense_buf_to_errno(r->req.sense, sizeof(r->req.sense));
467
468 if (error == ECANCELED || error == EAGAIN || error == ENOTCONN ||
469 error == 0) {
470 /* These errors are handled by guest. */
471 scsi_req_complete(&r->req, *r->status);
472 return true;
473 }
474 }
475
476 blk_error_action(s->qdev.conf.blk, action, is_read, error);
477 if (action == BLOCK_ERROR_ACTION_STOP) {
478 scsi_req_retry(&r->req);
479 }
480 return action != BLOCK_ERROR_ACTION_IGNORE;
481 }
482
483 static void scsi_write_complete_noio(SCSIDiskReq *r, int ret)
484 {
485 uint32_t n;
486
487 assert (r->req.aiocb == NULL);
488 if (scsi_disk_req_check_error(r, ret, false)) {
489 goto done;
490 }
491
492 n = r->qiov.size / 512;
493 r->sector += n;
494 r->sector_count -= n;
495 if (r->sector_count == 0) {
496 scsi_write_do_fua(r);
497 return;
498 } else {
499 scsi_init_iovec(r, SCSI_DMA_BUF_SIZE);
500 DPRINTF("Write complete tag=0x%x more=%zd\n", r->req.tag, r->qiov.size);
501 scsi_req_data(&r->req, r->qiov.size);
502 }
503
504 done:
505 scsi_req_unref(&r->req);
506 }
507
508 static void scsi_write_complete(void * opaque, int ret)
509 {
510 SCSIDiskReq *r = (SCSIDiskReq *)opaque;
511 SCSIDiskState *s = DO_UPCAST(SCSIDiskState, qdev, r->req.dev);
512
513 assert (r->req.aiocb != NULL);
514 r->req.aiocb = NULL;
515
516 aio_context_acquire(blk_get_aio_context(s->qdev.conf.blk));
517 if (ret < 0) {
518 block_acct_failed(blk_get_stats(s->qdev.conf.blk), &r->acct);
519 } else {
520 block_acct_done(blk_get_stats(s->qdev.conf.blk), &r->acct);
521 }
522 scsi_write_complete_noio(r, ret);
523 aio_context_release(blk_get_aio_context(s->qdev.conf.blk));
524 }
525
526 static void scsi_write_data(SCSIRequest *req)
527 {
528 SCSIDiskReq *r = DO_UPCAST(SCSIDiskReq, req, req);
529 SCSIDiskState *s = DO_UPCAST(SCSIDiskState, qdev, r->req.dev);
530 SCSIDiskClass *sdc = (SCSIDiskClass *) object_get_class(OBJECT(s));
531
532 /* No data transfer may already be in progress */
533 assert(r->req.aiocb == NULL);
534
535 /* The request is used as the AIO opaque value, so add a ref. */
536 scsi_req_ref(&r->req);
537 if (r->req.cmd.mode != SCSI_XFER_TO_DEV) {
538 DPRINTF("Data transfer direction invalid\n");
539 scsi_write_complete_noio(r, -EINVAL);
540 return;
541 }
542
543 if (!r->req.sg && !r->qiov.size) {
544 /* Called for the first time. Ask the driver to send us more data. */
545 r->started = true;
546 scsi_write_complete_noio(r, 0);
547 return;
548 }
549 if (!blk_is_available(req->dev->conf.blk)) {
550 scsi_write_complete_noio(r, -ENOMEDIUM);
551 return;
552 }
553
554 if (r->req.cmd.buf[0] == VERIFY_10 || r->req.cmd.buf[0] == VERIFY_12 ||
555 r->req.cmd.buf[0] == VERIFY_16) {
556 if (r->req.sg) {
557 scsi_dma_complete_noio(r, 0);
558 } else {
559 scsi_write_complete_noio(r, 0);
560 }
561 return;
562 }
563
564 if (r->req.sg) {
565 dma_acct_start(s->qdev.conf.blk, &r->acct, r->req.sg, BLOCK_ACCT_WRITE);
566 r->req.resid -= r->req.sg->size;
567 r->req.aiocb = dma_blk_io(blk_get_aio_context(s->qdev.conf.blk),
568 r->req.sg, r->sector << BDRV_SECTOR_BITS,
569 BDRV_SECTOR_SIZE,
570 sdc->dma_writev, r, scsi_dma_complete, r,
571 DMA_DIRECTION_TO_DEVICE);
572 } else {
573 block_acct_start(blk_get_stats(s->qdev.conf.blk), &r->acct,
574 r->qiov.size, BLOCK_ACCT_WRITE);
575 r->req.aiocb = sdc->dma_writev(r->sector << BDRV_SECTOR_BITS, &r->qiov,
576 scsi_write_complete, r, r);
577 }
578 }
579
580 /* Return a pointer to the data buffer. */
581 static uint8_t *scsi_get_buf(SCSIRequest *req)
582 {
583 SCSIDiskReq *r = DO_UPCAST(SCSIDiskReq, req, req);
584
585 return (uint8_t *)r->iov.iov_base;
586 }
587
588 static int scsi_disk_emulate_inquiry(SCSIRequest *req, uint8_t *outbuf)
589 {
590 SCSIDiskState *s = DO_UPCAST(SCSIDiskState, qdev, req->dev);
591 int buflen = 0;
592 int start;
593
594 if (req->cmd.buf[1] & 0x1) {
595 /* Vital product data */
596 uint8_t page_code = req->cmd.buf[2];
597
598 outbuf[buflen++] = s->qdev.type & 0x1f;
599 outbuf[buflen++] = page_code ; // this page
600 outbuf[buflen++] = 0x00;
601 outbuf[buflen++] = 0x00;
602 start = buflen;
603
604 switch (page_code) {
605 case 0x00: /* Supported page codes, mandatory */
606 {
607 DPRINTF("Inquiry EVPD[Supported pages] "
608 "buffer size %zd\n", req->cmd.xfer);
609 outbuf[buflen++] = 0x00; // list of supported pages (this page)
610 if (s->serial) {
611 outbuf[buflen++] = 0x80; // unit serial number
612 }
613 outbuf[buflen++] = 0x83; // device identification
614 if (s->qdev.type == TYPE_DISK) {
615 outbuf[buflen++] = 0xb0; // block limits
616 outbuf[buflen++] = 0xb1; /* block device characteristics */
617 outbuf[buflen++] = 0xb2; // thin provisioning
618 }
619 break;
620 }
621 case 0x80: /* Device serial number, optional */
622 {
623 int l;
624
625 if (!s->serial) {
626 DPRINTF("Inquiry (EVPD[Serial number] not supported\n");
627 return -1;
628 }
629
630 l = strlen(s->serial);
631 if (l > 36) {
632 l = 36;
633 }
634
635 DPRINTF("Inquiry EVPD[Serial number] "
636 "buffer size %zd\n", req->cmd.xfer);
637 memcpy(outbuf+buflen, s->serial, l);
638 buflen += l;
639 break;
640 }
641
642 case 0x83: /* Device identification page, mandatory */
643 {
644 const char *str = s->serial ?: blk_name(s->qdev.conf.blk);
645 int max_len = s->serial ? 20 : 255 - 8;
646 int id_len = strlen(str);
647
648 if (id_len > max_len) {
649 id_len = max_len;
650 }
651 DPRINTF("Inquiry EVPD[Device identification] "
652 "buffer size %zd\n", req->cmd.xfer);
653
654 outbuf[buflen++] = 0x2; // ASCII
655 outbuf[buflen++] = 0; // not officially assigned
656 outbuf[buflen++] = 0; // reserved
657 outbuf[buflen++] = id_len; // length of data following
658 memcpy(outbuf+buflen, str, id_len);
659 buflen += id_len;
660
661 if (s->qdev.wwn) {
662 outbuf[buflen++] = 0x1; // Binary
663 outbuf[buflen++] = 0x3; // NAA
664 outbuf[buflen++] = 0; // reserved
665 outbuf[buflen++] = 8;
666 stq_be_p(&outbuf[buflen], s->qdev.wwn);
667 buflen += 8;
668 }
669
670 if (s->qdev.port_wwn) {
671 outbuf[buflen++] = 0x61; // SAS / Binary
672 outbuf[buflen++] = 0x93; // PIV / Target port / NAA
673 outbuf[buflen++] = 0; // reserved
674 outbuf[buflen++] = 8;
675 stq_be_p(&outbuf[buflen], s->qdev.port_wwn);
676 buflen += 8;
677 }
678
679 if (s->port_index) {
680 outbuf[buflen++] = 0x61; // SAS / Binary
681 outbuf[buflen++] = 0x94; // PIV / Target port / relative target port
682 outbuf[buflen++] = 0; // reserved
683 outbuf[buflen++] = 4;
684 stw_be_p(&outbuf[buflen + 2], s->port_index);
685 buflen += 4;
686 }
687 break;
688 }
689 case 0xb0: /* block limits */
690 {
691 unsigned int unmap_sectors =
692 s->qdev.conf.discard_granularity / s->qdev.blocksize;
693 unsigned int min_io_size =
694 s->qdev.conf.min_io_size / s->qdev.blocksize;
695 unsigned int opt_io_size =
696 s->qdev.conf.opt_io_size / s->qdev.blocksize;
697 unsigned int max_unmap_sectors =
698 s->max_unmap_size / s->qdev.blocksize;
699 unsigned int max_io_sectors =
700 s->max_io_size / s->qdev.blocksize;
701
702 if (s->qdev.type == TYPE_ROM) {
703 DPRINTF("Inquiry (EVPD[%02X] not supported for CDROM\n",
704 page_code);
705 return -1;
706 }
707 /* required VPD size with unmap support */
708 buflen = 0x40;
709 memset(outbuf + 4, 0, buflen - 4);
710
711 outbuf[4] = 0x1; /* wsnz */
712
713 /* optimal transfer length granularity */
714 outbuf[6] = (min_io_size >> 8) & 0xff;
715 outbuf[7] = min_io_size & 0xff;
716
717 /* maximum transfer length */
718 outbuf[8] = (max_io_sectors >> 24) & 0xff;
719 outbuf[9] = (max_io_sectors >> 16) & 0xff;
720 outbuf[10] = (max_io_sectors >> 8) & 0xff;
721 outbuf[11] = max_io_sectors & 0xff;
722
723 /* optimal transfer length */
724 outbuf[12] = (opt_io_size >> 24) & 0xff;
725 outbuf[13] = (opt_io_size >> 16) & 0xff;
726 outbuf[14] = (opt_io_size >> 8) & 0xff;
727 outbuf[15] = opt_io_size & 0xff;
728
729 /* max unmap LBA count, default is 1GB */
730 outbuf[20] = (max_unmap_sectors >> 24) & 0xff;
731 outbuf[21] = (max_unmap_sectors >> 16) & 0xff;
732 outbuf[22] = (max_unmap_sectors >> 8) & 0xff;
733 outbuf[23] = max_unmap_sectors & 0xff;
734
735 /* max unmap descriptors, 255 fit in 4 kb with an 8-byte header. */
736 outbuf[24] = 0;
737 outbuf[25] = 0;
738 outbuf[26] = 0;
739 outbuf[27] = 255;
740
741 /* optimal unmap granularity */
742 outbuf[28] = (unmap_sectors >> 24) & 0xff;
743 outbuf[29] = (unmap_sectors >> 16) & 0xff;
744 outbuf[30] = (unmap_sectors >> 8) & 0xff;
745 outbuf[31] = unmap_sectors & 0xff;
746
747 /* max write same size */
748 outbuf[36] = 0;
749 outbuf[37] = 0;
750 outbuf[38] = 0;
751 outbuf[39] = 0;
752
753 outbuf[40] = (max_io_sectors >> 24) & 0xff;
754 outbuf[41] = (max_io_sectors >> 16) & 0xff;
755 outbuf[42] = (max_io_sectors >> 8) & 0xff;
756 outbuf[43] = max_io_sectors & 0xff;
757 break;
758 }
759 case 0xb1: /* block device characteristics */
760 {
761 buflen = 8;
762 outbuf[4] = (s->rotation_rate >> 8) & 0xff;
763 outbuf[5] = s->rotation_rate & 0xff;
764 outbuf[6] = 0;
765 outbuf[7] = 0;
766 break;
767 }
768 case 0xb2: /* thin provisioning */
769 {
770 buflen = 8;
771 outbuf[4] = 0;
772 outbuf[5] = 0xe0; /* unmap & write_same 10/16 all supported */
773 outbuf[6] = s->qdev.conf.discard_granularity ? 2 : 1;
774 outbuf[7] = 0;
775 break;
776 }
777 default:
778 return -1;
779 }
780 /* done with EVPD */
781 assert(buflen - start <= 255);
782 outbuf[start - 1] = buflen - start;
783 return buflen;
784 }
785
786 /* Standard INQUIRY data */
787 if (req->cmd.buf[2] != 0) {
788 return -1;
789 }
790
791 /* PAGE CODE == 0 */
792 buflen = req->cmd.xfer;
793 if (buflen > SCSI_MAX_INQUIRY_LEN) {
794 buflen = SCSI_MAX_INQUIRY_LEN;
795 }
796
797 outbuf[0] = s->qdev.type & 0x1f;
798 outbuf[1] = (s->features & (1 << SCSI_DISK_F_REMOVABLE)) ? 0x80 : 0;
799
800 strpadcpy((char *) &outbuf[16], 16, s->product, ' ');
801 strpadcpy((char *) &outbuf[8], 8, s->vendor, ' ');
802
803 memset(&outbuf[32], 0, 4);
804 memcpy(&outbuf[32], s->version, MIN(4, strlen(s->version)));
805 /*
806 * We claim conformance to SPC-3, which is required for guests
807 * to ask for modern features like READ CAPACITY(16) or the
808 * block characteristics VPD page by default. Not all of SPC-3
809 * is actually implemented, but we're good enough.
810 */
811 outbuf[2] = 5;
812 outbuf[3] = 2 | 0x10; /* Format 2, HiSup */
813
814 if (buflen > 36) {
815 outbuf[4] = buflen - 5; /* Additional Length = (Len - 1) - 4 */
816 } else {
817 /* If the allocation length of CDB is too small,
818 the additional length is not adjusted */
819 outbuf[4] = 36 - 5;
820 }
821
822 /* Sync data transfer and TCQ. */
823 outbuf[7] = 0x10 | (req->bus->info->tcq ? 0x02 : 0);
824 return buflen;
825 }
826
827 static inline bool media_is_dvd(SCSIDiskState *s)
828 {
829 uint64_t nb_sectors;
830 if (s->qdev.type != TYPE_ROM) {
831 return false;
832 }
833 if (!blk_is_available(s->qdev.conf.blk)) {
834 return false;
835 }
836 blk_get_geometry(s->qdev.conf.blk, &nb_sectors);
837 return nb_sectors > CD_MAX_SECTORS;
838 }
839
840 static inline bool media_is_cd(SCSIDiskState *s)
841 {
842 uint64_t nb_sectors;
843 if (s->qdev.type != TYPE_ROM) {
844 return false;
845 }
846 if (!blk_is_available(s->qdev.conf.blk)) {
847 return false;
848 }
849 blk_get_geometry(s->qdev.conf.blk, &nb_sectors);
850 return nb_sectors <= CD_MAX_SECTORS;
851 }
852
853 static int scsi_read_disc_information(SCSIDiskState *s, SCSIDiskReq *r,
854 uint8_t *outbuf)
855 {
856 uint8_t type = r->req.cmd.buf[1] & 7;
857
858 if (s->qdev.type != TYPE_ROM) {
859 return -1;
860 }
861
862 /* Types 1/2 are only defined for Blu-Ray. */
863 if (type != 0) {
864 scsi_check_condition(r, SENSE_CODE(INVALID_FIELD));
865 return -1;
866 }
867
868 memset(outbuf, 0, 34);
869 outbuf[1] = 32;
870 outbuf[2] = 0xe; /* last session complete, disc finalized */
871 outbuf[3] = 1; /* first track on disc */
872 outbuf[4] = 1; /* # of sessions */
873 outbuf[5] = 1; /* first track of last session */
874 outbuf[6] = 1; /* last track of last session */
875 outbuf[7] = 0x20; /* unrestricted use */
876 outbuf[8] = 0x00; /* CD-ROM or DVD-ROM */
877 /* 9-10-11: most significant byte corresponding bytes 4-5-6 */
878 /* 12-23: not meaningful for CD-ROM or DVD-ROM */
879 /* 24-31: disc bar code */
880 /* 32: disc application code */
881 /* 33: number of OPC tables */
882
883 return 34;
884 }
885
886 static int scsi_read_dvd_structure(SCSIDiskState *s, SCSIDiskReq *r,
887 uint8_t *outbuf)
888 {
889 static const int rds_caps_size[5] = {
890 [0] = 2048 + 4,
891 [1] = 4 + 4,
892 [3] = 188 + 4,
893 [4] = 2048 + 4,
894 };
895
896 uint8_t media = r->req.cmd.buf[1];
897 uint8_t layer = r->req.cmd.buf[6];
898 uint8_t format = r->req.cmd.buf[7];
899 int size = -1;
900
901 if (s->qdev.type != TYPE_ROM) {
902 return -1;
903 }
904 if (media != 0) {
905 scsi_check_condition(r, SENSE_CODE(INVALID_FIELD));
906 return -1;
907 }
908
909 if (format != 0xff) {
910 if (!blk_is_available(s->qdev.conf.blk)) {
911 scsi_check_condition(r, SENSE_CODE(NO_MEDIUM));
912 return -1;
913 }
914 if (media_is_cd(s)) {
915 scsi_check_condition(r, SENSE_CODE(INCOMPATIBLE_FORMAT));
916 return -1;
917 }
918 if (format >= ARRAY_SIZE(rds_caps_size)) {
919 return -1;
920 }
921 size = rds_caps_size[format];
922 memset(outbuf, 0, size);
923 }
924
925 switch (format) {
926 case 0x00: {
927 /* Physical format information */
928 uint64_t nb_sectors;
929 if (layer != 0) {
930 goto fail;
931 }
932 blk_get_geometry(s->qdev.conf.blk, &nb_sectors);
933
934 outbuf[4] = 1; /* DVD-ROM, part version 1 */
935 outbuf[5] = 0xf; /* 120mm disc, minimum rate unspecified */
936 outbuf[6] = 1; /* one layer, read-only (per MMC-2 spec) */
937 outbuf[7] = 0; /* default densities */
938
939 stl_be_p(&outbuf[12], (nb_sectors >> 2) - 1); /* end sector */
940 stl_be_p(&outbuf[16], (nb_sectors >> 2) - 1); /* l0 end sector */
941 break;
942 }
943
944 case 0x01: /* DVD copyright information, all zeros */
945 break;
946
947 case 0x03: /* BCA information - invalid field for no BCA info */
948 return -1;
949
950 case 0x04: /* DVD disc manufacturing information, all zeros */
951 break;
952
953 case 0xff: { /* List capabilities */
954 int i;
955 size = 4;
956 for (i = 0; i < ARRAY_SIZE(rds_caps_size); i++) {
957 if (!rds_caps_size[i]) {
958 continue;
959 }
960 outbuf[size] = i;
961 outbuf[size + 1] = 0x40; /* Not writable, readable */
962 stw_be_p(&outbuf[size + 2], rds_caps_size[i]);
963 size += 4;
964 }
965 break;
966 }
967
968 default:
969 return -1;
970 }
971
972 /* Size of buffer, not including 2 byte size field */
973 stw_be_p(outbuf, size - 2);
974 return size;
975
976 fail:
977 return -1;
978 }
979
980 static int scsi_event_status_media(SCSIDiskState *s, uint8_t *outbuf)
981 {
982 uint8_t event_code, media_status;
983
984 media_status = 0;
985 if (s->tray_open) {
986 media_status = MS_TRAY_OPEN;
987 } else if (blk_is_inserted(s->qdev.conf.blk)) {
988 media_status = MS_MEDIA_PRESENT;
989 }
990
991 /* Event notification descriptor */
992 event_code = MEC_NO_CHANGE;
993 if (media_status != MS_TRAY_OPEN) {
994 if (s->media_event) {
995 event_code = MEC_NEW_MEDIA;
996 s->media_event = false;
997 } else if (s->eject_request) {
998 event_code = MEC_EJECT_REQUESTED;
999 s->eject_request = false;
1000 }
1001 }
1002
1003 outbuf[0] = event_code;
1004 outbuf[1] = media_status;
1005
1006 /* These fields are reserved, just clear them. */
1007 outbuf[2] = 0;
1008 outbuf[3] = 0;
1009 return 4;
1010 }
1011
1012 static int scsi_get_event_status_notification(SCSIDiskState *s, SCSIDiskReq *r,
1013 uint8_t *outbuf)
1014 {
1015 int size;
1016 uint8_t *buf = r->req.cmd.buf;
1017 uint8_t notification_class_request = buf[4];
1018 if (s->qdev.type != TYPE_ROM) {
1019 return -1;
1020 }
1021 if ((buf[1] & 1) == 0) {
1022 /* asynchronous */
1023 return -1;
1024 }
1025
1026 size = 4;
1027 outbuf[0] = outbuf[1] = 0;
1028 outbuf[3] = 1 << GESN_MEDIA; /* supported events */
1029 if (notification_class_request & (1 << GESN_MEDIA)) {
1030 outbuf[2] = GESN_MEDIA;
1031 size += scsi_event_status_media(s, &outbuf[size]);
1032 } else {
1033 outbuf[2] = 0x80;
1034 }
1035 stw_be_p(outbuf, size - 4);
1036 return size;
1037 }
1038
1039 static int scsi_get_configuration(SCSIDiskState *s, uint8_t *outbuf)
1040 {
1041 int current;
1042
1043 if (s->qdev.type != TYPE_ROM) {
1044 return -1;
1045 }
1046
1047 if (media_is_dvd(s)) {
1048 current = MMC_PROFILE_DVD_ROM;
1049 } else if (media_is_cd(s)) {
1050 current = MMC_PROFILE_CD_ROM;
1051 } else {
1052 current = MMC_PROFILE_NONE;
1053 }
1054
1055 memset(outbuf, 0, 40);
1056 stl_be_p(&outbuf[0], 36); /* Bytes after the data length field */
1057 stw_be_p(&outbuf[6], current);
1058 /* outbuf[8] - outbuf[19]: Feature 0 - Profile list */
1059 outbuf[10] = 0x03; /* persistent, current */
1060 outbuf[11] = 8; /* two profiles */
1061 stw_be_p(&outbuf[12], MMC_PROFILE_DVD_ROM);
1062 outbuf[14] = (current == MMC_PROFILE_DVD_ROM);
1063 stw_be_p(&outbuf[16], MMC_PROFILE_CD_ROM);
1064 outbuf[18] = (current == MMC_PROFILE_CD_ROM);
1065 /* outbuf[20] - outbuf[31]: Feature 1 - Core feature */
1066 stw_be_p(&outbuf[20], 1);
1067 outbuf[22] = 0x08 | 0x03; /* version 2, persistent, current */
1068 outbuf[23] = 8;
1069 stl_be_p(&outbuf[24], 1); /* SCSI */
1070 outbuf[28] = 1; /* DBE = 1, mandatory */
1071 /* outbuf[32] - outbuf[39]: Feature 3 - Removable media feature */
1072 stw_be_p(&outbuf[32], 3);
1073 outbuf[34] = 0x08 | 0x03; /* version 2, persistent, current */
1074 outbuf[35] = 4;
1075 outbuf[36] = 0x39; /* tray, load=1, eject=1, unlocked at powerup, lock=1 */
1076 /* TODO: Random readable, CD read, DVD read, drive serial number,
1077 power management */
1078 return 40;
1079 }
1080
1081 static int scsi_emulate_mechanism_status(SCSIDiskState *s, uint8_t *outbuf)
1082 {
1083 if (s->qdev.type != TYPE_ROM) {
1084 return -1;
1085 }
1086 memset(outbuf, 0, 8);
1087 outbuf[5] = 1; /* CD-ROM */
1088 return 8;
1089 }
1090
1091 static int mode_sense_page(SCSIDiskState *s, int page, uint8_t **p_outbuf,
1092 int page_control)
1093 {
1094 static const int mode_sense_valid[0x3f] = {
1095 [MODE_PAGE_HD_GEOMETRY] = (1 << TYPE_DISK),
1096 [MODE_PAGE_FLEXIBLE_DISK_GEOMETRY] = (1 << TYPE_DISK),
1097 [MODE_PAGE_CACHING] = (1 << TYPE_DISK) | (1 << TYPE_ROM),
1098 [MODE_PAGE_R_W_ERROR] = (1 << TYPE_DISK) | (1 << TYPE_ROM),
1099 [MODE_PAGE_AUDIO_CTL] = (1 << TYPE_ROM),
1100 [MODE_PAGE_CAPABILITIES] = (1 << TYPE_ROM),
1101 };
1102
1103 uint8_t *p = *p_outbuf + 2;
1104 int length;
1105
1106 if ((mode_sense_valid[page] & (1 << s->qdev.type)) == 0) {
1107 return -1;
1108 }
1109
1110 /*
1111 * If Changeable Values are requested, a mask denoting those mode parameters
1112 * that are changeable shall be returned. As we currently don't support
1113 * parameter changes via MODE_SELECT all bits are returned set to zero.
1114 * The buffer was already menset to zero by the caller of this function.
1115 *
1116 * The offsets here are off by two compared to the descriptions in the
1117 * SCSI specs, because those include a 2-byte header. This is unfortunate,
1118 * but it is done so that offsets are consistent within our implementation
1119 * of MODE SENSE and MODE SELECT. MODE SELECT has to deal with both
1120 * 2-byte and 4-byte headers.
1121 */
1122 switch (page) {
1123 case MODE_PAGE_HD_GEOMETRY:
1124 length = 0x16;
1125 if (page_control == 1) { /* Changeable Values */
1126 break;
1127 }
1128 /* if a geometry hint is available, use it */
1129 p[0] = (s->qdev.conf.cyls >> 16) & 0xff;
1130 p[1] = (s->qdev.conf.cyls >> 8) & 0xff;
1131 p[2] = s->qdev.conf.cyls & 0xff;
1132 p[3] = s->qdev.conf.heads & 0xff;
1133 /* Write precomp start cylinder, disabled */
1134 p[4] = (s->qdev.conf.cyls >> 16) & 0xff;
1135 p[5] = (s->qdev.conf.cyls >> 8) & 0xff;
1136 p[6] = s->qdev.conf.cyls & 0xff;
1137 /* Reduced current start cylinder, disabled */
1138 p[7] = (s->qdev.conf.cyls >> 16) & 0xff;
1139 p[8] = (s->qdev.conf.cyls >> 8) & 0xff;
1140 p[9] = s->qdev.conf.cyls & 0xff;
1141 /* Device step rate [ns], 200ns */
1142 p[10] = 0;
1143 p[11] = 200;
1144 /* Landing zone cylinder */
1145 p[12] = 0xff;
1146 p[13] = 0xff;
1147 p[14] = 0xff;
1148 /* Medium rotation rate [rpm], 5400 rpm */
1149 p[18] = (5400 >> 8) & 0xff;
1150 p[19] = 5400 & 0xff;
1151 break;
1152
1153 case MODE_PAGE_FLEXIBLE_DISK_GEOMETRY:
1154 length = 0x1e;
1155 if (page_control == 1) { /* Changeable Values */
1156 break;
1157 }
1158 /* Transfer rate [kbit/s], 5Mbit/s */
1159 p[0] = 5000 >> 8;
1160 p[1] = 5000 & 0xff;
1161 /* if a geometry hint is available, use it */
1162 p[2] = s->qdev.conf.heads & 0xff;
1163 p[3] = s->qdev.conf.secs & 0xff;
1164 p[4] = s->qdev.blocksize >> 8;
1165 p[6] = (s->qdev.conf.cyls >> 8) & 0xff;
1166 p[7] = s->qdev.conf.cyls & 0xff;
1167 /* Write precomp start cylinder, disabled */
1168 p[8] = (s->qdev.conf.cyls >> 8) & 0xff;
1169 p[9] = s->qdev.conf.cyls & 0xff;
1170 /* Reduced current start cylinder, disabled */
1171 p[10] = (s->qdev.conf.cyls >> 8) & 0xff;
1172 p[11] = s->qdev.conf.cyls & 0xff;
1173 /* Device step rate [100us], 100us */
1174 p[12] = 0;
1175 p[13] = 1;
1176 /* Device step pulse width [us], 1us */
1177 p[14] = 1;
1178 /* Device head settle delay [100us], 100us */
1179 p[15] = 0;
1180 p[16] = 1;
1181 /* Motor on delay [0.1s], 0.1s */
1182 p[17] = 1;
1183 /* Motor off delay [0.1s], 0.1s */
1184 p[18] = 1;
1185 /* Medium rotation rate [rpm], 5400 rpm */
1186 p[26] = (5400 >> 8) & 0xff;
1187 p[27] = 5400 & 0xff;
1188 break;
1189
1190 case MODE_PAGE_CACHING:
1191 length = 0x12;
1192 if (page_control == 1 || /* Changeable Values */
1193 blk_enable_write_cache(s->qdev.conf.blk)) {
1194 p[0] = 4; /* WCE */
1195 }
1196 break;
1197
1198 case MODE_PAGE_R_W_ERROR:
1199 length = 10;
1200 if (page_control == 1) { /* Changeable Values */
1201 break;
1202 }
1203 p[0] = 0x80; /* Automatic Write Reallocation Enabled */
1204 if (s->qdev.type == TYPE_ROM) {
1205 p[1] = 0x20; /* Read Retry Count */
1206 }
1207 break;
1208
1209 case MODE_PAGE_AUDIO_CTL:
1210 length = 14;
1211 break;
1212
1213 case MODE_PAGE_CAPABILITIES:
1214 length = 0x14;
1215 if (page_control == 1) { /* Changeable Values */
1216 break;
1217 }
1218
1219 p[0] = 0x3b; /* CD-R & CD-RW read */
1220 p[1] = 0; /* Writing not supported */
1221 p[2] = 0x7f; /* Audio, composite, digital out,
1222 mode 2 form 1&2, multi session */
1223 p[3] = 0xff; /* CD DA, DA accurate, RW supported,
1224 RW corrected, C2 errors, ISRC,
1225 UPC, Bar code */
1226 p[4] = 0x2d | (s->tray_locked ? 2 : 0);
1227 /* Locking supported, jumper present, eject, tray */
1228 p[5] = 0; /* no volume & mute control, no
1229 changer */
1230 p[6] = (50 * 176) >> 8; /* 50x read speed */
1231 p[7] = (50 * 176) & 0xff;
1232 p[8] = 2 >> 8; /* Two volume levels */
1233 p[9] = 2 & 0xff;
1234 p[10] = 2048 >> 8; /* 2M buffer */
1235 p[11] = 2048 & 0xff;
1236 p[12] = (16 * 176) >> 8; /* 16x read speed current */
1237 p[13] = (16 * 176) & 0xff;
1238 p[16] = (16 * 176) >> 8; /* 16x write speed */
1239 p[17] = (16 * 176) & 0xff;
1240 p[18] = (16 * 176) >> 8; /* 16x write speed current */
1241 p[19] = (16 * 176) & 0xff;
1242 break;
1243
1244 default:
1245 return -1;
1246 }
1247
1248 assert(length < 256);
1249 (*p_outbuf)[0] = page;
1250 (*p_outbuf)[1] = length;
1251 *p_outbuf += length + 2;
1252 return length + 2;
1253 }
1254
1255 static int scsi_disk_emulate_mode_sense(SCSIDiskReq *r, uint8_t *outbuf)
1256 {
1257 SCSIDiskState *s = DO_UPCAST(SCSIDiskState, qdev, r->req.dev);
1258 uint64_t nb_sectors;
1259 bool dbd;
1260 int page, buflen, ret, page_control;
1261 uint8_t *p;
1262 uint8_t dev_specific_param;
1263
1264 dbd = (r->req.cmd.buf[1] & 0x8) != 0;
1265 page = r->req.cmd.buf[2] & 0x3f;
1266 page_control = (r->req.cmd.buf[2] & 0xc0) >> 6;
1267 DPRINTF("Mode Sense(%d) (page %d, xfer %zd, page_control %d)\n",
1268 (r->req.cmd.buf[0] == MODE_SENSE) ? 6 : 10, page, r->req.cmd.xfer, page_control);
1269 memset(outbuf, 0, r->req.cmd.xfer);
1270 p = outbuf;
1271
1272 if (s->qdev.type == TYPE_DISK) {
1273 dev_specific_param = s->features & (1 << SCSI_DISK_F_DPOFUA) ? 0x10 : 0;
1274 if (blk_is_read_only(s->qdev.conf.blk)) {
1275 dev_specific_param |= 0x80; /* Readonly. */
1276 }
1277 } else {
1278 /* MMC prescribes that CD/DVD drives have no block descriptors,
1279 * and defines no device-specific parameter. */
1280 dev_specific_param = 0x00;
1281 dbd = true;
1282 }
1283
1284 if (r->req.cmd.buf[0] == MODE_SENSE) {
1285 p[1] = 0; /* Default media type. */
1286 p[2] = dev_specific_param;
1287 p[3] = 0; /* Block descriptor length. */
1288 p += 4;
1289 } else { /* MODE_SENSE_10 */
1290 p[2] = 0; /* Default media type. */
1291 p[3] = dev_specific_param;
1292 p[6] = p[7] = 0; /* Block descriptor length. */
1293 p += 8;
1294 }
1295
1296 blk_get_geometry(s->qdev.conf.blk, &nb_sectors);
1297 if (!dbd && nb_sectors) {
1298 if (r->req.cmd.buf[0] == MODE_SENSE) {
1299 outbuf[3] = 8; /* Block descriptor length */
1300 } else { /* MODE_SENSE_10 */
1301 outbuf[7] = 8; /* Block descriptor length */
1302 }
1303 nb_sectors /= (s->qdev.blocksize / 512);
1304 if (nb_sectors > 0xffffff) {
1305 nb_sectors = 0;
1306 }
1307 p[0] = 0; /* media density code */
1308 p[1] = (nb_sectors >> 16) & 0xff;
1309 p[2] = (nb_sectors >> 8) & 0xff;
1310 p[3] = nb_sectors & 0xff;
1311 p[4] = 0; /* reserved */
1312 p[5] = 0; /* bytes 5-7 are the sector size in bytes */
1313 p[6] = s->qdev.blocksize >> 8;
1314 p[7] = 0;
1315 p += 8;
1316 }
1317
1318 if (page_control == 3) {
1319 /* Saved Values */
1320 scsi_check_condition(r, SENSE_CODE(SAVING_PARAMS_NOT_SUPPORTED));
1321 return -1;
1322 }
1323
1324 if (page == 0x3f) {
1325 for (page = 0; page <= 0x3e; page++) {
1326 mode_sense_page(s, page, &p, page_control);
1327 }
1328 } else {
1329 ret = mode_sense_page(s, page, &p, page_control);
1330 if (ret == -1) {
1331 return -1;
1332 }
1333 }
1334
1335 buflen = p - outbuf;
1336 /*
1337 * The mode data length field specifies the length in bytes of the
1338 * following data that is available to be transferred. The mode data
1339 * length does not include itself.
1340 */
1341 if (r->req.cmd.buf[0] == MODE_SENSE) {
1342 outbuf[0] = buflen - 1;
1343 } else { /* MODE_SENSE_10 */
1344 outbuf[0] = ((buflen - 2) >> 8) & 0xff;
1345 outbuf[1] = (buflen - 2) & 0xff;
1346 }
1347 return buflen;
1348 }
1349
1350 static int scsi_disk_emulate_read_toc(SCSIRequest *req, uint8_t *outbuf)
1351 {
1352 SCSIDiskState *s = DO_UPCAST(SCSIDiskState, qdev, req->dev);
1353 int start_track, format, msf, toclen;
1354 uint64_t nb_sectors;
1355
1356 msf = req->cmd.buf[1] & 2;
1357 format = req->cmd.buf[2] & 0xf;
1358 start_track = req->cmd.buf[6];
1359 blk_get_geometry(s->qdev.conf.blk, &nb_sectors);
1360 DPRINTF("Read TOC (track %d format %d msf %d)\n", start_track, format, msf >> 1);
1361 nb_sectors /= s->qdev.blocksize / 512;
1362 switch (format) {
1363 case 0:
1364 toclen = cdrom_read_toc(nb_sectors, outbuf, msf, start_track);
1365 break;
1366 case 1:
1367 /* multi session : only a single session defined */
1368 toclen = 12;
1369 memset(outbuf, 0, 12);
1370 outbuf[1] = 0x0a;
1371 outbuf[2] = 0x01;
1372 outbuf[3] = 0x01;
1373 break;
1374 case 2:
1375 toclen = cdrom_read_toc_raw(nb_sectors, outbuf, msf, start_track);
1376 break;
1377 default:
1378 return -1;
1379 }
1380 return toclen;
1381 }
1382
1383 static int scsi_disk_emulate_start_stop(SCSIDiskReq *r)
1384 {
1385 SCSIRequest *req = &r->req;
1386 SCSIDiskState *s = DO_UPCAST(SCSIDiskState, qdev, req->dev);
1387 bool start = req->cmd.buf[4] & 1;
1388 bool loej = req->cmd.buf[4] & 2; /* load on start, eject on !start */
1389 int pwrcnd = req->cmd.buf[4] & 0xf0;
1390
1391 if (pwrcnd) {
1392 /* eject/load only happens for power condition == 0 */
1393 return 0;
1394 }
1395
1396 if ((s->features & (1 << SCSI_DISK_F_REMOVABLE)) && loej) {
1397 if (!start && !s->tray_open && s->tray_locked) {
1398 scsi_check_condition(r,
1399 blk_is_inserted(s->qdev.conf.blk)
1400 ? SENSE_CODE(ILLEGAL_REQ_REMOVAL_PREVENTED)
1401 : SENSE_CODE(NOT_READY_REMOVAL_PREVENTED));
1402 return -1;
1403 }
1404
1405 if (s->tray_open != !start) {
1406 blk_eject(s->qdev.conf.blk, !start);
1407 s->tray_open = !start;
1408 }
1409 }
1410 return 0;
1411 }
1412
1413 static void scsi_disk_emulate_read_data(SCSIRequest *req)
1414 {
1415 SCSIDiskReq *r = DO_UPCAST(SCSIDiskReq, req, req);
1416 int buflen = r->iov.iov_len;
1417
1418 if (buflen) {
1419 DPRINTF("Read buf_len=%d\n", buflen);
1420 r->iov.iov_len = 0;
1421 r->started = true;
1422 scsi_req_data(&r->req, buflen);
1423 return;
1424 }
1425
1426 /* This also clears the sense buffer for REQUEST SENSE. */
1427 scsi_req_complete(&r->req, GOOD);
1428 }
1429
1430 static int scsi_disk_check_mode_select(SCSIDiskState *s, int page,
1431 uint8_t *inbuf, int inlen)
1432 {
1433 uint8_t mode_current[SCSI_MAX_MODE_LEN];
1434 uint8_t mode_changeable[SCSI_MAX_MODE_LEN];
1435 uint8_t *p;
1436 int len, expected_len, changeable_len, i;
1437
1438 /* The input buffer does not include the page header, so it is
1439 * off by 2 bytes.
1440 */
1441 expected_len = inlen + 2;
1442 if (expected_len > SCSI_MAX_MODE_LEN) {
1443 return -1;
1444 }
1445
1446 p = mode_current;
1447 memset(mode_current, 0, inlen + 2);
1448 len = mode_sense_page(s, page, &p, 0);
1449 if (len < 0 || len != expected_len) {
1450 return -1;
1451 }
1452
1453 p = mode_changeable;
1454 memset(mode_changeable, 0, inlen + 2);
1455 changeable_len = mode_sense_page(s, page, &p, 1);
1456 assert(changeable_len == len);
1457
1458 /* Check that unchangeable bits are the same as what MODE SENSE
1459 * would return.
1460 */
1461 for (i = 2; i < len; i++) {
1462 if (((mode_current[i] ^ inbuf[i - 2]) & ~mode_changeable[i]) != 0) {
1463 return -1;
1464 }
1465 }
1466 return 0;
1467 }
1468
1469 static void scsi_disk_apply_mode_select(SCSIDiskState *s, int page, uint8_t *p)
1470 {
1471 switch (page) {
1472 case MODE_PAGE_CACHING:
1473 blk_set_enable_write_cache(s->qdev.conf.blk, (p[0] & 4) != 0);
1474 break;
1475
1476 default:
1477 break;
1478 }
1479 }
1480
1481 static int mode_select_pages(SCSIDiskReq *r, uint8_t *p, int len, bool change)
1482 {
1483 SCSIDiskState *s = DO_UPCAST(SCSIDiskState, qdev, r->req.dev);
1484
1485 while (len > 0) {
1486 int page, subpage, page_len;
1487
1488 /* Parse both possible formats for the mode page headers. */
1489 page = p[0] & 0x3f;
1490 if (p[0] & 0x40) {
1491 if (len < 4) {
1492 goto invalid_param_len;
1493 }
1494 subpage = p[1];
1495 page_len = lduw_be_p(&p[2]);
1496 p += 4;
1497 len -= 4;
1498 } else {
1499 if (len < 2) {
1500 goto invalid_param_len;
1501 }
1502 subpage = 0;
1503 page_len = p[1];
1504 p += 2;
1505 len -= 2;
1506 }
1507
1508 if (subpage) {
1509 goto invalid_param;
1510 }
1511 if (page_len > len) {
1512 goto invalid_param_len;
1513 }
1514
1515 if (!change) {
1516 if (scsi_disk_check_mode_select(s, page, p, page_len) < 0) {
1517 goto invalid_param;
1518 }
1519 } else {
1520 scsi_disk_apply_mode_select(s, page, p);
1521 }
1522
1523 p += page_len;
1524 len -= page_len;
1525 }
1526 return 0;
1527
1528 invalid_param:
1529 scsi_check_condition(r, SENSE_CODE(INVALID_PARAM));
1530 return -1;
1531
1532 invalid_param_len:
1533 scsi_check_condition(r, SENSE_CODE(INVALID_PARAM_LEN));
1534 return -1;
1535 }
1536
1537 static void scsi_disk_emulate_mode_select(SCSIDiskReq *r, uint8_t *inbuf)
1538 {
1539 SCSIDiskState *s = DO_UPCAST(SCSIDiskState, qdev, r->req.dev);
1540 uint8_t *p = inbuf;
1541 int cmd = r->req.cmd.buf[0];
1542 int len = r->req.cmd.xfer;
1543 int hdr_len = (cmd == MODE_SELECT ? 4 : 8);
1544 int bd_len;
1545 int pass;
1546
1547 /* We only support PF=1, SP=0. */
1548 if ((r->req.cmd.buf[1] & 0x11) != 0x10) {
1549 goto invalid_field;
1550 }
1551
1552 if (len < hdr_len) {
1553 goto invalid_param_len;
1554 }
1555
1556 bd_len = (cmd == MODE_SELECT ? p[3] : lduw_be_p(&p[6]));
1557 len -= hdr_len;
1558 p += hdr_len;
1559 if (len < bd_len) {
1560 goto invalid_param_len;
1561 }
1562 if (bd_len != 0 && bd_len != 8) {
1563 goto invalid_param;
1564 }
1565
1566 len -= bd_len;
1567 p += bd_len;
1568
1569 /* Ensure no change is made if there is an error! */
1570 for (pass = 0; pass < 2; pass++) {
1571 if (mode_select_pages(r, p, len, pass == 1) < 0) {
1572 assert(pass == 0);
1573 return;
1574 }
1575 }
1576 if (!blk_enable_write_cache(s->qdev.conf.blk)) {
1577 /* The request is used as the AIO opaque value, so add a ref. */
1578 scsi_req_ref(&r->req);
1579 block_acct_start(blk_get_stats(s->qdev.conf.blk), &r->acct, 0,
1580 BLOCK_ACCT_FLUSH);
1581 r->req.aiocb = blk_aio_flush(s->qdev.conf.blk, scsi_aio_complete, r);
1582 return;
1583 }
1584
1585 scsi_req_complete(&r->req, GOOD);
1586 return;
1587
1588 invalid_param:
1589 scsi_check_condition(r, SENSE_CODE(INVALID_PARAM));
1590 return;
1591
1592 invalid_param_len:
1593 scsi_check_condition(r, SENSE_CODE(INVALID_PARAM_LEN));
1594 return;
1595
1596 invalid_field:
1597 scsi_check_condition(r, SENSE_CODE(INVALID_FIELD));
1598 }
1599
1600 static inline bool check_lba_range(SCSIDiskState *s,
1601 uint64_t sector_num, uint32_t nb_sectors)
1602 {
1603 /*
1604 * The first line tests that no overflow happens when computing the last
1605 * sector. The second line tests that the last accessed sector is in
1606 * range.
1607 *
1608 * Careful, the computations should not underflow for nb_sectors == 0,
1609 * and a 0-block read to the first LBA beyond the end of device is
1610 * valid.
1611 */
1612 return (sector_num <= sector_num + nb_sectors &&
1613 sector_num + nb_sectors <= s->qdev.max_lba + 1);
1614 }
1615
1616 typedef struct UnmapCBData {
1617 SCSIDiskReq *r;
1618 uint8_t *inbuf;
1619 int count;
1620 } UnmapCBData;
1621
1622 static void scsi_unmap_complete(void *opaque, int ret);
1623
1624 static void scsi_unmap_complete_noio(UnmapCBData *data, int ret)
1625 {
1626 SCSIDiskReq *r = data->r;
1627 SCSIDiskState *s = DO_UPCAST(SCSIDiskState, qdev, r->req.dev);
1628 uint64_t sector_num;
1629 uint32_t nb_sectors;
1630
1631 assert(r->req.aiocb == NULL);
1632 if (scsi_disk_req_check_error(r, ret, false)) {
1633 goto done;
1634 }
1635
1636 if (data->count > 0) {
1637 sector_num = ldq_be_p(&data->inbuf[0]);
1638 nb_sectors = ldl_be_p(&data->inbuf[8]) & 0xffffffffULL;
1639 if (!check_lba_range(s, sector_num, nb_sectors)) {
1640 scsi_check_condition(r, SENSE_CODE(LBA_OUT_OF_RANGE));
1641 goto done;
1642 }
1643
1644 r->req.aiocb = blk_aio_pdiscard(s->qdev.conf.blk,
1645 sector_num * s->qdev.blocksize,
1646 nb_sectors * s->qdev.blocksize,
1647 scsi_unmap_complete, data);
1648 data->count--;
1649 data->inbuf += 16;
1650 return;
1651 }
1652
1653 scsi_req_complete(&r->req, GOOD);
1654
1655 done:
1656 scsi_req_unref(&r->req);
1657 g_free(data);
1658 }
1659
1660 static void scsi_unmap_complete(void *opaque, int ret)
1661 {
1662 UnmapCBData *data = opaque;
1663 SCSIDiskReq *r = data->r;
1664 SCSIDiskState *s = DO_UPCAST(SCSIDiskState, qdev, r->req.dev);
1665
1666 assert(r->req.aiocb != NULL);
1667 r->req.aiocb = NULL;
1668
1669 aio_context_acquire(blk_get_aio_context(s->qdev.conf.blk));
1670 scsi_unmap_complete_noio(data, ret);
1671 aio_context_release(blk_get_aio_context(s->qdev.conf.blk));
1672 }
1673
1674 static void scsi_disk_emulate_unmap(SCSIDiskReq *r, uint8_t *inbuf)
1675 {
1676 SCSIDiskState *s = DO_UPCAST(SCSIDiskState, qdev, r->req.dev);
1677 uint8_t *p = inbuf;
1678 int len = r->req.cmd.xfer;
1679 UnmapCBData *data;
1680
1681 /* Reject ANCHOR=1. */
1682 if (r->req.cmd.buf[1] & 0x1) {
1683 goto invalid_field;
1684 }
1685
1686 if (len < 8) {
1687 goto invalid_param_len;
1688 }
1689 if (len < lduw_be_p(&p[0]) + 2) {
1690 goto invalid_param_len;
1691 }
1692 if (len < lduw_be_p(&p[2]) + 8) {
1693 goto invalid_param_len;
1694 }
1695 if (lduw_be_p(&p[2]) & 15) {
1696 goto invalid_param_len;
1697 }
1698
1699 if (blk_is_read_only(s->qdev.conf.blk)) {
1700 scsi_check_condition(r, SENSE_CODE(WRITE_PROTECTED));
1701 return;
1702 }
1703
1704 data = g_new0(UnmapCBData, 1);
1705 data->r = r;
1706 data->inbuf = &p[8];
1707 data->count = lduw_be_p(&p[2]) >> 4;
1708
1709 /* The matching unref is in scsi_unmap_complete, before data is freed. */
1710 scsi_req_ref(&r->req);
1711 scsi_unmap_complete_noio(data, 0);
1712 return;
1713
1714 invalid_param_len:
1715 scsi_check_condition(r, SENSE_CODE(INVALID_PARAM_LEN));
1716 return;
1717
1718 invalid_field:
1719 scsi_check_condition(r, SENSE_CODE(INVALID_FIELD));
1720 }
1721
1722 typedef struct WriteSameCBData {
1723 SCSIDiskReq *r;
1724 int64_t sector;
1725 int nb_sectors;
1726 QEMUIOVector qiov;
1727 struct iovec iov;
1728 } WriteSameCBData;
1729
1730 static void scsi_write_same_complete(void *opaque, int ret)
1731 {
1732 WriteSameCBData *data = opaque;
1733 SCSIDiskReq *r = data->r;
1734 SCSIDiskState *s = DO_UPCAST(SCSIDiskState, qdev, r->req.dev);
1735
1736 assert(r->req.aiocb != NULL);
1737 r->req.aiocb = NULL;
1738 aio_context_acquire(blk_get_aio_context(s->qdev.conf.blk));
1739 if (scsi_disk_req_check_error(r, ret, true)) {
1740 goto done;
1741 }
1742
1743 block_acct_done(blk_get_stats(s->qdev.conf.blk), &r->acct);
1744
1745 data->nb_sectors -= data->iov.iov_len / 512;
1746 data->sector += data->iov.iov_len / 512;
1747 data->iov.iov_len = MIN(data->nb_sectors * 512, data->iov.iov_len);
1748 if (data->iov.iov_len) {
1749 block_acct_start(blk_get_stats(s->qdev.conf.blk), &r->acct,
1750 data->iov.iov_len, BLOCK_ACCT_WRITE);
1751 /* Reinitialize qiov, to handle unaligned WRITE SAME request
1752 * where final qiov may need smaller size */
1753 qemu_iovec_init_external(&data->qiov, &data->iov, 1);
1754 r->req.aiocb = blk_aio_pwritev(s->qdev.conf.blk,
1755 data->sector << BDRV_SECTOR_BITS,
1756 &data->qiov, 0,
1757 scsi_write_same_complete, data);
1758 aio_context_release(blk_get_aio_context(s->qdev.conf.blk));
1759 return;
1760 }
1761
1762 scsi_req_complete(&r->req, GOOD);
1763
1764 done:
1765 scsi_req_unref(&r->req);
1766 qemu_vfree(data->iov.iov_base);
1767 g_free(data);
1768 aio_context_release(blk_get_aio_context(s->qdev.conf.blk));
1769 }
1770
1771 static void scsi_disk_emulate_write_same(SCSIDiskReq *r, uint8_t *inbuf)
1772 {
1773 SCSIRequest *req = &r->req;
1774 SCSIDiskState *s = DO_UPCAST(SCSIDiskState, qdev, req->dev);
1775 uint32_t nb_sectors = scsi_data_cdb_xfer(r->req.cmd.buf);
1776 WriteSameCBData *data;
1777 uint8_t *buf;
1778 int i;
1779
1780 /* Fail if PBDATA=1 or LBDATA=1 or ANCHOR=1. */
1781 if (nb_sectors == 0 || (req->cmd.buf[1] & 0x16)) {
1782 scsi_check_condition(r, SENSE_CODE(INVALID_FIELD));
1783 return;
1784 }
1785
1786 if (blk_is_read_only(s->qdev.conf.blk)) {
1787 scsi_check_condition(r, SENSE_CODE(WRITE_PROTECTED));
1788 return;
1789 }
1790 if (!check_lba_range(s, r->req.cmd.lba, nb_sectors)) {
1791 scsi_check_condition(r, SENSE_CODE(LBA_OUT_OF_RANGE));
1792 return;
1793 }
1794
1795 if (buffer_is_zero(inbuf, s->qdev.blocksize)) {
1796 int flags = (req->cmd.buf[1] & 0x8) ? BDRV_REQ_MAY_UNMAP : 0;
1797
1798 /* The request is used as the AIO opaque value, so add a ref. */
1799 scsi_req_ref(&r->req);
1800 block_acct_start(blk_get_stats(s->qdev.conf.blk), &r->acct,
1801 nb_sectors * s->qdev.blocksize,
1802 BLOCK_ACCT_WRITE);
1803 r->req.aiocb = blk_aio_pwrite_zeroes(s->qdev.conf.blk,
1804 r->req.cmd.lba * s->qdev.blocksize,
1805 nb_sectors * s->qdev.blocksize,
1806 flags, scsi_aio_complete, r);
1807 return;
1808 }
1809
1810 data = g_new0(WriteSameCBData, 1);
1811 data->r = r;
1812 data->sector = r->req.cmd.lba * (s->qdev.blocksize / 512);
1813 data->nb_sectors = nb_sectors * (s->qdev.blocksize / 512);
1814 data->iov.iov_len = MIN(data->nb_sectors * 512, SCSI_WRITE_SAME_MAX);
1815 data->iov.iov_base = buf = blk_blockalign(s->qdev.conf.blk,
1816 data->iov.iov_len);
1817 qemu_iovec_init_external(&data->qiov, &data->iov, 1);
1818
1819 for (i = 0; i < data->iov.iov_len; i += s->qdev.blocksize) {
1820 memcpy(&buf[i], inbuf, s->qdev.blocksize);
1821 }
1822
1823 scsi_req_ref(&r->req);
1824 block_acct_start(blk_get_stats(s->qdev.conf.blk), &r->acct,
1825 data->iov.iov_len, BLOCK_ACCT_WRITE);
1826 r->req.aiocb = blk_aio_pwritev(s->qdev.conf.blk,
1827 data->sector << BDRV_SECTOR_BITS,
1828 &data->qiov, 0,
1829 scsi_write_same_complete, data);
1830 }
1831
1832 static void scsi_disk_emulate_write_data(SCSIRequest *req)
1833 {
1834 SCSIDiskReq *r = DO_UPCAST(SCSIDiskReq, req, req);
1835
1836 if (r->iov.iov_len) {
1837 int buflen = r->iov.iov_len;
1838 DPRINTF("Write buf_len=%d\n", buflen);
1839 r->iov.iov_len = 0;
1840 scsi_req_data(&r->req, buflen);
1841 return;
1842 }
1843
1844 switch (req->cmd.buf[0]) {
1845 case MODE_SELECT:
1846 case MODE_SELECT_10:
1847 /* This also clears the sense buffer for REQUEST SENSE. */
1848 scsi_disk_emulate_mode_select(r, r->iov.iov_base);
1849 break;
1850
1851 case UNMAP:
1852 scsi_disk_emulate_unmap(r, r->iov.iov_base);
1853 break;
1854
1855 case VERIFY_10:
1856 case VERIFY_12:
1857 case VERIFY_16:
1858 if (r->req.status == -1) {
1859 scsi_check_condition(r, SENSE_CODE(INVALID_FIELD));
1860 }
1861 break;
1862
1863 case WRITE_SAME_10:
1864 case WRITE_SAME_16:
1865 scsi_disk_emulate_write_same(r, r->iov.iov_base);
1866 break;
1867
1868 default:
1869 abort();
1870 }
1871 }
1872
1873 static int32_t scsi_disk_emulate_command(SCSIRequest *req, uint8_t *buf)
1874 {
1875 SCSIDiskReq *r = DO_UPCAST(SCSIDiskReq, req, req);
1876 SCSIDiskState *s = DO_UPCAST(SCSIDiskState, qdev, req->dev);
1877 uint64_t nb_sectors;
1878 uint8_t *outbuf;
1879 int buflen;
1880
1881 switch (req->cmd.buf[0]) {
1882 case INQUIRY:
1883 case MODE_SENSE:
1884 case MODE_SENSE_10:
1885 case RESERVE:
1886 case RESERVE_10:
1887 case RELEASE:
1888 case RELEASE_10:
1889 case START_STOP:
1890 case ALLOW_MEDIUM_REMOVAL:
1891 case GET_CONFIGURATION:
1892 case GET_EVENT_STATUS_NOTIFICATION:
1893 case MECHANISM_STATUS:
1894 case REQUEST_SENSE:
1895 break;
1896
1897 default:
1898 if (!blk_is_available(s->qdev.conf.blk)) {
1899 scsi_check_condition(r, SENSE_CODE(NO_MEDIUM));
1900 return 0;
1901 }
1902 break;
1903 }
1904
1905 /*
1906 * FIXME: we shouldn't return anything bigger than 4k, but the code
1907 * requires the buffer to be as big as req->cmd.xfer in several
1908 * places. So, do not allow CDBs with a very large ALLOCATION
1909 * LENGTH. The real fix would be to modify scsi_read_data and
1910 * dma_buf_read, so that they return data beyond the buflen
1911 * as all zeros.
1912 */
1913 if (req->cmd.xfer > 65536) {
1914 goto illegal_request;
1915 }
1916 r->buflen = MAX(4096, req->cmd.xfer);
1917
1918 if (!r->iov.iov_base) {
1919 r->iov.iov_base = blk_blockalign(s->qdev.conf.blk, r->buflen);
1920 }
1921
1922 buflen = req->cmd.xfer;
1923 outbuf = r->iov.iov_base;
1924 memset(outbuf, 0, r->buflen);
1925 switch (req->cmd.buf[0]) {
1926 case TEST_UNIT_READY:
1927 assert(blk_is_available(s->qdev.conf.blk));
1928 break;
1929 case INQUIRY:
1930 buflen = scsi_disk_emulate_inquiry(req, outbuf);
1931 if (buflen < 0) {
1932 goto illegal_request;
1933 }
1934 break;
1935 case MODE_SENSE:
1936 case MODE_SENSE_10:
1937 buflen = scsi_disk_emulate_mode_sense(r, outbuf);
1938 if (buflen < 0) {
1939 goto illegal_request;
1940 }
1941 break;
1942 case READ_TOC:
1943 buflen = scsi_disk_emulate_read_toc(req, outbuf);
1944 if (buflen < 0) {
1945 goto illegal_request;
1946 }
1947 break;
1948 case RESERVE:
1949 if (req->cmd.buf[1] & 1) {
1950 goto illegal_request;
1951 }
1952 break;
1953 case RESERVE_10:
1954 if (req->cmd.buf[1] & 3) {
1955 goto illegal_request;
1956 }
1957 break;
1958 case RELEASE:
1959 if (req->cmd.buf[1] & 1) {
1960 goto illegal_request;
1961 }
1962 break;
1963 case RELEASE_10:
1964 if (req->cmd.buf[1] & 3) {
1965 goto illegal_request;
1966 }
1967 break;
1968 case START_STOP:
1969 if (scsi_disk_emulate_start_stop(r) < 0) {
1970 return 0;
1971 }
1972 break;
1973 case ALLOW_MEDIUM_REMOVAL:
1974 s->tray_locked = req->cmd.buf[4] & 1;
1975 blk_lock_medium(s->qdev.conf.blk, req->cmd.buf[4] & 1);
1976 break;
1977 case READ_CAPACITY_10:
1978 /* The normal LEN field for this command is zero. */
1979 memset(outbuf, 0, 8);
1980 blk_get_geometry(s->qdev.conf.blk, &nb_sectors);
1981 if (!nb_sectors) {
1982 scsi_check_condition(r, SENSE_CODE(LUN_NOT_READY));
1983 return 0;
1984 }
1985 if ((req->cmd.buf[8] & 1) == 0 && req->cmd.lba) {
1986 goto illegal_request;
1987 }
1988 nb_sectors /= s->qdev.blocksize / 512;
1989 /* Returned value is the address of the last sector. */
1990 nb_sectors--;
1991 /* Remember the new size for read/write sanity checking. */
1992 s->qdev.max_lba = nb_sectors;
1993 /* Clip to 2TB, instead of returning capacity modulo 2TB. */
1994 if (nb_sectors > UINT32_MAX) {
1995 nb_sectors = UINT32_MAX;
1996 }
1997 outbuf[0] = (nb_sectors >> 24) & 0xff;
1998 outbuf[1] = (nb_sectors >> 16) & 0xff;
1999 outbuf[2] = (nb_sectors >> 8) & 0xff;
2000 outbuf[3] = nb_sectors & 0xff;
2001 outbuf[4] = 0;
2002 outbuf[5] = 0;
2003 outbuf[6] = s->qdev.blocksize >> 8;
2004 outbuf[7] = 0;
2005 break;
2006 case REQUEST_SENSE:
2007 /* Just return "NO SENSE". */
2008 buflen = scsi_convert_sense(NULL, 0, outbuf, r->buflen,
2009 (req->cmd.buf[1] & 1) == 0);
2010 if (buflen < 0) {
2011 goto illegal_request;
2012 }
2013 break;
2014 case MECHANISM_STATUS:
2015 buflen = scsi_emulate_mechanism_status(s, outbuf);
2016 if (buflen < 0) {
2017 goto illegal_request;
2018 }
2019 break;
2020 case GET_CONFIGURATION:
2021 buflen = scsi_get_configuration(s, outbuf);
2022 if (buflen < 0) {
2023 goto illegal_request;
2024 }
2025 break;
2026 case GET_EVENT_STATUS_NOTIFICATION:
2027 buflen = scsi_get_event_status_notification(s, r, outbuf);
2028 if (buflen < 0) {
2029 goto illegal_request;
2030 }
2031 break;
2032 case READ_DISC_INFORMATION:
2033 buflen = scsi_read_disc_information(s, r, outbuf);
2034 if (buflen < 0) {
2035 goto illegal_request;
2036 }
2037 break;
2038 case READ_DVD_STRUCTURE:
2039 buflen = scsi_read_dvd_structure(s, r, outbuf);
2040 if (buflen < 0) {
2041 goto illegal_request;
2042 }
2043 break;
2044 case SERVICE_ACTION_IN_16:
2045 /* Service Action In subcommands. */
2046 if ((req->cmd.buf[1] & 31) == SAI_READ_CAPACITY_16) {
2047 DPRINTF("SAI READ CAPACITY(16)\n");
2048 memset(outbuf, 0, req->cmd.xfer);
2049 blk_get_geometry(s->qdev.conf.blk, &nb_sectors);
2050 if (!nb_sectors) {
2051 scsi_check_condition(r, SENSE_CODE(LUN_NOT_READY));
2052 return 0;
2053 }
2054 if ((req->cmd.buf[14] & 1) == 0 && req->cmd.lba) {
2055 goto illegal_request;
2056 }
2057 nb_sectors /= s->qdev.blocksize / 512;
2058 /* Returned value is the address of the last sector. */
2059 nb_sectors--;
2060 /* Remember the new size for read/write sanity checking. */
2061 s->qdev.max_lba = nb_sectors;
2062 outbuf[0] = (nb_sectors >> 56) & 0xff;
2063 outbuf[1] = (nb_sectors >> 48) & 0xff;
2064 outbuf[2] = (nb_sectors >> 40) & 0xff;
2065 outbuf[3] = (nb_sectors >> 32) & 0xff;
2066 outbuf[4] = (nb_sectors >> 24) & 0xff;
2067 outbuf[5] = (nb_sectors >> 16) & 0xff;
2068 outbuf[6] = (nb_sectors >> 8) & 0xff;
2069 outbuf[7] = nb_sectors & 0xff;
2070 outbuf[8] = 0;
2071 outbuf[9] = 0;
2072 outbuf[10] = s->qdev.blocksize >> 8;
2073 outbuf[11] = 0;
2074 outbuf[12] = 0;
2075 outbuf[13] = get_physical_block_exp(&s->qdev.conf);
2076
2077 /* set TPE bit if the format supports discard */
2078 if (s->qdev.conf.discard_granularity) {
2079 outbuf[14] = 0x80;
2080 }
2081
2082 /* Protection, exponent and lowest lba field left blank. */
2083 break;
2084 }
2085 DPRINTF("Unsupported Service Action In\n");
2086 goto illegal_request;
2087 case SYNCHRONIZE_CACHE:
2088 /* The request is used as the AIO opaque value, so add a ref. */
2089 scsi_req_ref(&r->req);
2090 block_acct_start(blk_get_stats(s->qdev.conf.blk), &r->acct, 0,
2091 BLOCK_ACCT_FLUSH);
2092 r->req.aiocb = blk_aio_flush(s->qdev.conf.blk, scsi_aio_complete, r);
2093 return 0;
2094 case SEEK_10:
2095 DPRINTF("Seek(10) (sector %" PRId64 ")\n", r->req.cmd.lba);
2096 if (r->req.cmd.lba > s->qdev.max_lba) {
2097 goto illegal_lba;
2098 }
2099 break;
2100 case MODE_SELECT:
2101 DPRINTF("Mode Select(6) (len %lu)\n", (unsigned long)r->req.cmd.xfer);
2102 break;
2103 case MODE_SELECT_10:
2104 DPRINTF("Mode Select(10) (len %lu)\n", (unsigned long)r->req.cmd.xfer);
2105 break;
2106 case UNMAP:
2107 DPRINTF("Unmap (len %lu)\n", (unsigned long)r->req.cmd.xfer);
2108 break;
2109 case VERIFY_10:
2110 case VERIFY_12:
2111 case VERIFY_16:
2112 DPRINTF("Verify (bytchk %d)\n", (req->cmd.buf[1] >> 1) & 3);
2113 if (req->cmd.buf[1] & 6) {
2114 goto illegal_request;
2115 }
2116 break;
2117 case WRITE_SAME_10:
2118 case WRITE_SAME_16:
2119 DPRINTF("WRITE SAME %d (len %lu)\n",
2120 req->cmd.buf[0] == WRITE_SAME_10 ? 10 : 16,
2121 (unsigned long)r->req.cmd.xfer);
2122 break;
2123 default:
2124 DPRINTF("Unknown SCSI command (%2.2x=%s)\n", buf[0],
2125 scsi_command_name(buf[0]));
2126 scsi_check_condition(r, SENSE_CODE(INVALID_OPCODE));
2127 return 0;
2128 }
2129 assert(!r->req.aiocb);
2130 r->iov.iov_len = MIN(r->buflen, req->cmd.xfer);
2131 if (r->iov.iov_len == 0) {
2132 scsi_req_complete(&r->req, GOOD);
2133 }
2134 if (r->req.cmd.mode == SCSI_XFER_TO_DEV) {
2135 assert(r->iov.iov_len == req->cmd.xfer);
2136 return -r->iov.iov_len;
2137 } else {
2138 return r->iov.iov_len;
2139 }
2140
2141 illegal_request:
2142 if (r->req.status == -1) {
2143 scsi_check_condition(r, SENSE_CODE(INVALID_FIELD));
2144 }
2145 return 0;
2146
2147 illegal_lba:
2148 scsi_check_condition(r, SENSE_CODE(LBA_OUT_OF_RANGE));
2149 return 0;
2150 }
2151
2152 /* Execute a scsi command. Returns the length of the data expected by the
2153 command. This will be Positive for data transfers from the device
2154 (eg. disk reads), negative for transfers to the device (eg. disk writes),
2155 and zero if the command does not transfer any data. */
2156
2157 static int32_t scsi_disk_dma_command(SCSIRequest *req, uint8_t *buf)
2158 {
2159 SCSIDiskReq *r = DO_UPCAST(SCSIDiskReq, req, req);
2160 SCSIDiskState *s = DO_UPCAST(SCSIDiskState, qdev, req->dev);
2161 SCSIDiskClass *sdc = (SCSIDiskClass *) object_get_class(OBJECT(s));
2162 uint32_t len;
2163 uint8_t command;
2164
2165 command = buf[0];
2166
2167 if (!blk_is_available(s->qdev.conf.blk)) {
2168 scsi_check_condition(r, SENSE_CODE(NO_MEDIUM));
2169 return 0;
2170 }
2171
2172 len = scsi_data_cdb_xfer(r->req.cmd.buf);
2173 switch (command) {
2174 case READ_6:
2175 case READ_10:
2176 case READ_12:
2177 case READ_16:
2178 DPRINTF("Read (sector %" PRId64 ", count %u)\n", r->req.cmd.lba, len);
2179 if (r->req.cmd.buf[1] & 0xe0) {
2180 goto illegal_request;
2181 }
2182 if (!check_lba_range(s, r->req.cmd.lba, len)) {
2183 goto illegal_lba;
2184 }
2185 r->sector = r->req.cmd.lba * (s->qdev.blocksize / 512);
2186 r->sector_count = len * (s->qdev.blocksize / 512);
2187 break;
2188 case WRITE_6:
2189 case WRITE_10:
2190 case WRITE_12:
2191 case WRITE_16:
2192 case WRITE_VERIFY_10:
2193 case WRITE_VERIFY_12:
2194 case WRITE_VERIFY_16:
2195 if (blk_is_read_only(s->qdev.conf.blk)) {
2196 scsi_check_condition(r, SENSE_CODE(WRITE_PROTECTED));
2197 return 0;
2198 }
2199 DPRINTF("Write %s(sector %" PRId64 ", count %u)\n",
2200 (command & 0xe) == 0xe ? "And Verify " : "",
2201 r->req.cmd.lba, len);
2202 /* fall through */
2203 case VERIFY_10:
2204 case VERIFY_12:
2205 case VERIFY_16:
2206 /* We get here only for BYTCHK == 0x01 and only for scsi-block.
2207 * As far as DMA is concerned, we can treat it the same as a write;
2208 * scsi_block_do_sgio will send VERIFY commands.
2209 */
2210 if (r->req.cmd.buf[1] & 0xe0) {
2211 goto illegal_request;
2212 }
2213 if (!check_lba_range(s, r->req.cmd.lba, len)) {
2214 goto illegal_lba;
2215 }
2216 r->sector = r->req.cmd.lba * (s->qdev.blocksize / 512);
2217 r->sector_count = len * (s->qdev.blocksize / 512);
2218 break;
2219 default:
2220 abort();
2221 illegal_request:
2222 scsi_check_condition(r, SENSE_CODE(INVALID_FIELD));
2223 return 0;
2224 illegal_lba:
2225 scsi_check_condition(r, SENSE_CODE(LBA_OUT_OF_RANGE));
2226 return 0;
2227 }
2228 r->need_fua_emulation = sdc->need_fua_emulation(&r->req.cmd);
2229 if (r->sector_count == 0) {
2230 scsi_req_complete(&r->req, GOOD);
2231 }
2232 assert(r->iov.iov_len == 0);
2233 if (r->req.cmd.mode == SCSI_XFER_TO_DEV) {
2234 return -r->sector_count * 512;
2235 } else {
2236 return r->sector_count * 512;
2237 }
2238 }
2239
2240 static void scsi_disk_reset(DeviceState *dev)
2241 {
2242 SCSIDiskState *s = DO_UPCAST(SCSIDiskState, qdev.qdev, dev);
2243 uint64_t nb_sectors;
2244
2245 scsi_device_purge_requests(&s->qdev, SENSE_CODE(RESET));
2246
2247 blk_get_geometry(s->qdev.conf.blk, &nb_sectors);
2248 nb_sectors /= s->qdev.blocksize / 512;
2249 if (nb_sectors) {
2250 nb_sectors--;
2251 }
2252 s->qdev.max_lba = nb_sectors;
2253 /* reset tray statuses */
2254 s->tray_locked = 0;
2255 s->tray_open = 0;
2256 }
2257
2258 static void scsi_disk_resize_cb(void *opaque)
2259 {
2260 SCSIDiskState *s = opaque;
2261
2262 /* SPC lists this sense code as available only for
2263 * direct-access devices.
2264 */
2265 if (s->qdev.type == TYPE_DISK) {
2266 scsi_device_report_change(&s->qdev, SENSE_CODE(CAPACITY_CHANGED));
2267 }
2268 }
2269
2270 static void scsi_cd_change_media_cb(void *opaque, bool load, Error **errp)
2271 {
2272 SCSIDiskState *s = opaque;
2273
2274 /*
2275 * When a CD gets changed, we have to report an ejected state and
2276 * then a loaded state to guests so that they detect tray
2277 * open/close and media change events. Guests that do not use
2278 * GET_EVENT_STATUS_NOTIFICATION to detect such tray open/close
2279 * states rely on this behavior.
2280 *
2281 * media_changed governs the state machine used for unit attention
2282 * report. media_event is used by GET EVENT STATUS NOTIFICATION.
2283 */
2284 s->media_changed = load;
2285 s->tray_open = !load;
2286 scsi_device_set_ua(&s->qdev, SENSE_CODE(UNIT_ATTENTION_NO_MEDIUM));
2287 s->media_event = true;
2288 s->eject_request = false;
2289 }
2290
2291 static void scsi_cd_eject_request_cb(void *opaque, bool force)
2292 {
2293 SCSIDiskState *s = opaque;
2294
2295 s->eject_request = true;
2296 if (force) {
2297 s->tray_locked = false;
2298 }
2299 }
2300
2301 static bool scsi_cd_is_tray_open(void *opaque)
2302 {
2303 return ((SCSIDiskState *)opaque)->tray_open;
2304 }
2305
2306 static bool scsi_cd_is_medium_locked(void *opaque)
2307 {
2308 return ((SCSIDiskState *)opaque)->tray_locked;
2309 }
2310
2311 static const BlockDevOps scsi_disk_removable_block_ops = {
2312 .change_media_cb = scsi_cd_change_media_cb,
2313 .eject_request_cb = scsi_cd_eject_request_cb,
2314 .is_tray_open = scsi_cd_is_tray_open,
2315 .is_medium_locked = scsi_cd_is_medium_locked,
2316
2317 .resize_cb = scsi_disk_resize_cb,
2318 };
2319
2320 static const BlockDevOps scsi_disk_block_ops = {
2321 .resize_cb = scsi_disk_resize_cb,
2322 };
2323
2324 static void scsi_disk_unit_attention_reported(SCSIDevice *dev)
2325 {
2326 SCSIDiskState *s = DO_UPCAST(SCSIDiskState, qdev, dev);
2327 if (s->media_changed) {
2328 s->media_changed = false;
2329 scsi_device_set_ua(&s->qdev, SENSE_CODE(MEDIUM_CHANGED));
2330 }
2331 }
2332
2333 static void scsi_realize(SCSIDevice *dev, Error **errp)
2334 {
2335 SCSIDiskState *s = DO_UPCAST(SCSIDiskState, qdev, dev);
2336
2337 if (!s->qdev.conf.blk) {
2338 error_setg(errp, "drive property not set");
2339 return;
2340 }
2341
2342 if (!(s->features & (1 << SCSI_DISK_F_REMOVABLE)) &&
2343 !blk_is_inserted(s->qdev.conf.blk)) {
2344 error_setg(errp, "Device needs media, but drive is empty");
2345 return;
2346 }
2347
2348 blkconf_serial(&s->qdev.conf, &s->serial);
2349 blkconf_blocksizes(&s->qdev.conf);
2350
2351 if (s->qdev.conf.logical_block_size >
2352 s->qdev.conf.physical_block_size) {
2353 error_setg(errp,
2354 "logical_block_size > physical_block_size not supported");
2355 return;
2356 }
2357
2358 if (dev->type == TYPE_DISK) {
2359 if (!blkconf_geometry(&dev->conf, NULL, 65535, 255, 255, errp)) {
2360 return;
2361 }
2362 }
2363 if (!blkconf_apply_backend_options(&dev->conf,
2364 blk_is_read_only(s->qdev.conf.blk),
2365 dev->type == TYPE_DISK, errp)) {
2366 return;
2367 }
2368
2369 if (s->qdev.conf.discard_granularity == -1) {
2370 s->qdev.conf.discard_granularity =
2371 MAX(s->qdev.conf.logical_block_size, DEFAULT_DISCARD_GRANULARITY);
2372 }
2373
2374 if (!s->version) {
2375 s->version = g_strdup(qemu_hw_version());
2376 }
2377 if (!s->vendor) {
2378 s->vendor = g_strdup("QEMU");
2379 }
2380
2381 if (blk_is_sg(s->qdev.conf.blk)) {
2382 error_setg(errp, "unwanted /dev/sg*");
2383 return;
2384 }
2385
2386 if ((s->features & (1 << SCSI_DISK_F_REMOVABLE)) &&
2387 !(s->features & (1 << SCSI_DISK_F_NO_REMOVABLE_DEVOPS))) {
2388 blk_set_dev_ops(s->qdev.conf.blk, &scsi_disk_removable_block_ops, s);
2389 } else {
2390 blk_set_dev_ops(s->qdev.conf.blk, &scsi_disk_block_ops, s);
2391 }
2392 blk_set_guest_block_size(s->qdev.conf.blk, s->qdev.blocksize);
2393
2394 blk_iostatus_enable(s->qdev.conf.blk);
2395 }
2396
2397 static void scsi_hd_realize(SCSIDevice *dev, Error **errp)
2398 {
2399 SCSIDiskState *s = DO_UPCAST(SCSIDiskState, qdev, dev);
2400 /* can happen for devices without drive. The error message for missing
2401 * backend will be issued in scsi_realize
2402 */
2403 if (s->qdev.conf.blk) {
2404 blkconf_blocksizes(&s->qdev.conf);
2405 }
2406 s->qdev.blocksize = s->qdev.conf.logical_block_size;
2407 s->qdev.type = TYPE_DISK;
2408 if (!s->product) {
2409 s->product = g_strdup("QEMU HARDDISK");
2410 }
2411 scsi_realize(&s->qdev, errp);
2412 }
2413
2414 static void scsi_cd_realize(SCSIDevice *dev, Error **errp)
2415 {
2416 SCSIDiskState *s = DO_UPCAST(SCSIDiskState, qdev, dev);
2417 int ret;
2418
2419 if (!dev->conf.blk) {
2420 /* Anonymous BlockBackend for an empty drive. As we put it into
2421 * dev->conf, qdev takes care of detaching on unplug. */
2422 dev->conf.blk = blk_new(0, BLK_PERM_ALL);
2423 ret = blk_attach_dev(dev->conf.blk, &dev->qdev);
2424 assert(ret == 0);
2425 }
2426
2427 s->qdev.blocksize = 2048;
2428 s->qdev.type = TYPE_ROM;
2429 s->features |= 1 << SCSI_DISK_F_REMOVABLE;
2430 if (!s->product) {
2431 s->product = g_strdup("QEMU CD-ROM");
2432 }
2433 scsi_realize(&s->qdev, errp);
2434 }
2435
2436 static void scsi_disk_realize(SCSIDevice *dev, Error **errp)
2437 {
2438 DriveInfo *dinfo;
2439 Error *local_err = NULL;
2440
2441 if (!dev->conf.blk) {
2442 scsi_realize(dev, &local_err);
2443 assert(local_err);
2444 error_propagate(errp, local_err);
2445 return;
2446 }
2447
2448 dinfo = blk_legacy_dinfo(dev->conf.blk);
2449 if (dinfo && dinfo->media_cd) {
2450 scsi_cd_realize(dev, errp);
2451 } else {
2452 scsi_hd_realize(dev, errp);
2453 }
2454 }
2455
2456 static const SCSIReqOps scsi_disk_emulate_reqops = {
2457 .size = sizeof(SCSIDiskReq),
2458 .free_req = scsi_free_request,
2459 .send_command = scsi_disk_emulate_command,
2460 .read_data = scsi_disk_emulate_read_data,
2461 .write_data = scsi_disk_emulate_write_data,
2462 .get_buf = scsi_get_buf,
2463 };
2464
2465 static const SCSIReqOps scsi_disk_dma_reqops = {
2466 .size = sizeof(SCSIDiskReq),
2467 .free_req = scsi_free_request,
2468 .send_command = scsi_disk_dma_command,
2469 .read_data = scsi_read_data,
2470 .write_data = scsi_write_data,
2471 .get_buf = scsi_get_buf,
2472 .load_request = scsi_disk_load_request,
2473 .save_request = scsi_disk_save_request,
2474 };
2475
2476 static const SCSIReqOps *const scsi_disk_reqops_dispatch[256] = {
2477 [TEST_UNIT_READY] = &scsi_disk_emulate_reqops,
2478 [INQUIRY] = &scsi_disk_emulate_reqops,
2479 [MODE_SENSE] = &scsi_disk_emulate_reqops,
2480 [MODE_SENSE_10] = &scsi_disk_emulate_reqops,
2481 [START_STOP] = &scsi_disk_emulate_reqops,
2482 [ALLOW_MEDIUM_REMOVAL] = &scsi_disk_emulate_reqops,
2483 [READ_CAPACITY_10] = &scsi_disk_emulate_reqops,
2484 [READ_TOC] = &scsi_disk_emulate_reqops,
2485 [READ_DVD_STRUCTURE] = &scsi_disk_emulate_reqops,
2486 [READ_DISC_INFORMATION] = &scsi_disk_emulate_reqops,
2487 [GET_CONFIGURATION] = &scsi_disk_emulate_reqops,
2488 [GET_EVENT_STATUS_NOTIFICATION] = &scsi_disk_emulate_reqops,
2489 [MECHANISM_STATUS] = &scsi_disk_emulate_reqops,
2490 [SERVICE_ACTION_IN_16] = &scsi_disk_emulate_reqops,
2491 [REQUEST_SENSE] = &scsi_disk_emulate_reqops,
2492 [SYNCHRONIZE_CACHE] = &scsi_disk_emulate_reqops,
2493 [SEEK_10] = &scsi_disk_emulate_reqops,
2494 [MODE_SELECT] = &scsi_disk_emulate_reqops,
2495 [MODE_SELECT_10] = &scsi_disk_emulate_reqops,
2496 [UNMAP] = &scsi_disk_emulate_reqops,
2497 [WRITE_SAME_10] = &scsi_disk_emulate_reqops,
2498 [WRITE_SAME_16] = &scsi_disk_emulate_reqops,
2499 [VERIFY_10] = &scsi_disk_emulate_reqops,
2500 [VERIFY_12] = &scsi_disk_emulate_reqops,
2501 [VERIFY_16] = &scsi_disk_emulate_reqops,
2502
2503 [READ_6] = &scsi_disk_dma_reqops,
2504 [READ_10] = &scsi_disk_dma_reqops,
2505 [READ_12] = &scsi_disk_dma_reqops,
2506 [READ_16] = &scsi_disk_dma_reqops,
2507 [WRITE_6] = &scsi_disk_dma_reqops,
2508 [WRITE_10] = &scsi_disk_dma_reqops,
2509 [WRITE_12] = &scsi_disk_dma_reqops,
2510 [WRITE_16] = &scsi_disk_dma_reqops,
2511 [WRITE_VERIFY_10] = &scsi_disk_dma_reqops,
2512 [WRITE_VERIFY_12] = &scsi_disk_dma_reqops,
2513 [WRITE_VERIFY_16] = &scsi_disk_dma_reqops,
2514 };
2515
2516 static SCSIRequest *scsi_new_request(SCSIDevice *d, uint32_t tag, uint32_t lun,
2517 uint8_t *buf, void *hba_private)
2518 {
2519 SCSIDiskState *s = DO_UPCAST(SCSIDiskState, qdev, d);
2520 SCSIRequest *req;
2521 const SCSIReqOps *ops;
2522 uint8_t command;
2523
2524 command = buf[0];
2525 ops = scsi_disk_reqops_dispatch[command];
2526 if (!ops) {
2527 ops = &scsi_disk_emulate_reqops;
2528 }
2529 req = scsi_req_alloc(ops, &s->qdev, tag, lun, hba_private);
2530
2531 #ifdef DEBUG_SCSI
2532 DPRINTF("Command: lun=%d tag=0x%x data=0x%02x", lun, tag, buf[0]);
2533 {
2534 int i;
2535 for (i = 1; i < scsi_cdb_length(buf); i++) {
2536 printf(" 0x%02x", buf[i]);
2537 }
2538 printf("\n");
2539 }
2540 #endif
2541
2542 return req;
2543 }
2544
2545 #ifdef __linux__
2546 static int get_device_type(SCSIDiskState *s)
2547 {
2548 uint8_t cmd[16];
2549 uint8_t buf[36];
2550 uint8_t sensebuf[8];
2551 sg_io_hdr_t io_header;
2552 int ret;
2553
2554 memset(cmd, 0, sizeof(cmd));
2555 memset(buf, 0, sizeof(buf));
2556 cmd[0] = INQUIRY;
2557 cmd[4] = sizeof(buf);
2558
2559 memset(&io_header, 0, sizeof(io_header));
2560 io_header.interface_id = 'S';
2561 io_header.dxfer_direction = SG_DXFER_FROM_DEV;
2562 io_header.dxfer_len = sizeof(buf);
2563 io_header.dxferp = buf;
2564 io_header.cmdp = cmd;
2565 io_header.cmd_len = sizeof(cmd);
2566 io_header.mx_sb_len = sizeof(sensebuf);
2567 io_header.sbp = sensebuf;
2568 io_header.timeout = 6000; /* XXX */
2569
2570 ret = blk_ioctl(s->qdev.conf.blk, SG_IO, &io_header);
2571 if (ret < 0 || io_header.driver_status || io_header.host_status) {
2572 return -1;
2573 }
2574 s->qdev.type = buf[0];
2575 if (buf[1] & 0x80) {
2576 s->features |= 1 << SCSI_DISK_F_REMOVABLE;
2577 }
2578 return 0;
2579 }
2580
2581 static void scsi_block_realize(SCSIDevice *dev, Error **errp)
2582 {
2583 SCSIDiskState *s = DO_UPCAST(SCSIDiskState, qdev, dev);
2584 int sg_version;
2585 int rc;
2586
2587 if (!s->qdev.conf.blk) {
2588 error_setg(errp, "drive property not set");
2589 return;
2590 }
2591
2592 /* check we are using a driver managing SG_IO (version 3 and after) */
2593 rc = blk_ioctl(s->qdev.conf.blk, SG_GET_VERSION_NUM, &sg_version);
2594 if (rc < 0) {
2595 error_setg(errp, "cannot get SG_IO version number: %s. "
2596 "Is this a SCSI device?",
2597 strerror(-rc));
2598 return;
2599 }
2600 if (sg_version < 30000) {
2601 error_setg(errp, "scsi generic interface too old");
2602 return;
2603 }
2604
2605 /* get device type from INQUIRY data */
2606 rc = get_device_type(s);
2607 if (rc < 0) {
2608 error_setg(errp, "INQUIRY failed");
2609 return;
2610 }
2611
2612 /* Make a guess for the block size, we'll fix it when the guest sends.
2613 * READ CAPACITY. If they don't, they likely would assume these sizes
2614 * anyway. (TODO: check in /sys).
2615 */
2616 if (s->qdev.type == TYPE_ROM || s->qdev.type == TYPE_WORM) {
2617 s->qdev.blocksize = 2048;
2618 } else {
2619 s->qdev.blocksize = 512;
2620 }
2621
2622 /* Makes the scsi-block device not removable by using HMP and QMP eject
2623 * command.
2624 */
2625 s->features |= (1 << SCSI_DISK_F_NO_REMOVABLE_DEVOPS);
2626
2627 scsi_realize(&s->qdev, errp);
2628 scsi_generic_read_device_identification(&s->qdev);
2629 }
2630
2631 typedef struct SCSIBlockReq {
2632 SCSIDiskReq req;
2633 sg_io_hdr_t io_header;
2634
2635 /* Selected bytes of the original CDB, copied into our own CDB. */
2636 uint8_t cmd, cdb1, group_number;
2637
2638 /* CDB passed to SG_IO. */
2639 uint8_t cdb[16];
2640 } SCSIBlockReq;
2641
2642 static BlockAIOCB *scsi_block_do_sgio(SCSIBlockReq *req,
2643 int64_t offset, QEMUIOVector *iov,
2644 int direction,
2645 BlockCompletionFunc *cb, void *opaque)
2646 {
2647 sg_io_hdr_t *io_header = &req->io_header;
2648 SCSIDiskReq *r = &req->req;
2649 SCSIDiskState *s = DO_UPCAST(SCSIDiskState, qdev, r->req.dev);
2650 int nb_logical_blocks;
2651 uint64_t lba;
2652 BlockAIOCB *aiocb;
2653
2654 /* This is not supported yet. It can only happen if the guest does
2655 * reads and writes that are not aligned to one logical sectors
2656 * _and_ cover multiple MemoryRegions.
2657 */
2658 assert(offset % s->qdev.blocksize == 0);
2659 assert(iov->size % s->qdev.blocksize == 0);
2660
2661 io_header->interface_id = 'S';
2662
2663 /* The data transfer comes from the QEMUIOVector. */
2664 io_header->dxfer_direction = direction;
2665 io_header->dxfer_len = iov->size;
2666 io_header->dxferp = (void *)iov->iov;
2667 io_header->iovec_count = iov->niov;
2668 assert(io_header->iovec_count == iov->niov); /* no overflow! */
2669
2670 /* Build a new CDB with the LBA and length patched in, in case
2671 * DMA helpers split the transfer in multiple segments. Do not
2672 * build a CDB smaller than what the guest wanted, and only build
2673 * a larger one if strictly necessary.
2674 */
2675 io_header->cmdp = req->cdb;
2676 lba = offset / s->qdev.blocksize;
2677 nb_logical_blocks = io_header->dxfer_len / s->qdev.blocksize;
2678
2679 if ((req->cmd >> 5) == 0 && lba <= 0x1ffff) {
2680 /* 6-byte CDB */
2681 stl_be_p(&req->cdb[0], lba | (req->cmd << 24));
2682 req->cdb[4] = nb_logical_blocks;
2683 req->cdb[5] = 0;
2684 io_header->cmd_len = 6;
2685 } else if ((req->cmd >> 5) <= 1 && lba <= 0xffffffffULL) {
2686 /* 10-byte CDB */
2687 req->cdb[0] = (req->cmd & 0x1f) | 0x20;
2688 req->cdb[1] = req->cdb1;
2689 stl_be_p(&req->cdb[2], lba);
2690 req->cdb[6] = req->group_number;
2691 stw_be_p(&req->cdb[7], nb_logical_blocks);
2692 req->cdb[9] = 0;
2693 io_header->cmd_len = 10;
2694 } else if ((req->cmd >> 5) != 4 && lba <= 0xffffffffULL) {
2695 /* 12-byte CDB */
2696 req->cdb[0] = (req->cmd & 0x1f) | 0xA0;
2697 req->cdb[1] = req->cdb1;
2698 stl_be_p(&req->cdb[2], lba);
2699 stl_be_p(&req->cdb[6], nb_logical_blocks);
2700 req->cdb[10] = req->group_number;
2701 req->cdb[11] = 0;
2702 io_header->cmd_len = 12;
2703 } else {
2704 /* 16-byte CDB */
2705 req->cdb[0] = (req->cmd & 0x1f) | 0x80;
2706 req->cdb[1] = req->cdb1;
2707 stq_be_p(&req->cdb[2], lba);
2708 stl_be_p(&req->cdb[10], nb_logical_blocks);
2709 req->cdb[14] = req->group_number;
2710 req->cdb[15] = 0;
2711 io_header->cmd_len = 16;
2712 }
2713
2714 /* The rest is as in scsi-generic.c. */
2715 io_header->mx_sb_len = sizeof(r->req.sense);
2716 io_header->sbp = r->req.sense;
2717 io_header->timeout = UINT_MAX;
2718 io_header->usr_ptr = r;
2719 io_header->flags |= SG_FLAG_DIRECT_IO;
2720
2721 aiocb = blk_aio_ioctl(s->qdev.conf.blk, SG_IO, io_header, cb, opaque);
2722 assert(aiocb != NULL);
2723 return aiocb;
2724 }
2725
2726 static bool scsi_block_no_fua(SCSICommand *cmd)
2727 {
2728 return false;
2729 }
2730
2731 static BlockAIOCB *scsi_block_dma_readv(int64_t offset,
2732 QEMUIOVector *iov,
2733 BlockCompletionFunc *cb, void *cb_opaque,
2734 void *opaque)
2735 {
2736 SCSIBlockReq *r = opaque;
2737 return scsi_block_do_sgio(r, offset, iov,
2738 SG_DXFER_FROM_DEV, cb, cb_opaque);
2739 }
2740
2741 static BlockAIOCB *scsi_block_dma_writev(int64_t offset,
2742 QEMUIOVector *iov,
2743 BlockCompletionFunc *cb, void *cb_opaque,
2744 void *opaque)
2745 {
2746 SCSIBlockReq *r = opaque;
2747 return scsi_block_do_sgio(r, offset, iov,
2748 SG_DXFER_TO_DEV, cb, cb_opaque);
2749 }
2750
2751 static bool scsi_block_is_passthrough(SCSIDiskState *s, uint8_t *buf)
2752 {
2753 switch (buf[0]) {
2754 case VERIFY_10:
2755 case VERIFY_12:
2756 case VERIFY_16:
2757 /* Check if BYTCHK == 0x01 (data-out buffer contains data
2758 * for the number of logical blocks specified in the length
2759 * field). For other modes, do not use scatter/gather operation.
2760 */
2761 if ((buf[1] & 6) == 2) {
2762 return false;
2763 }
2764 break;
2765
2766 case READ_6:
2767 case READ_10:
2768 case READ_12:
2769 case READ_16:
2770 case WRITE_6:
2771 case WRITE_10:
2772 case WRITE_12:
2773 case WRITE_16:
2774 case WRITE_VERIFY_10:
2775 case WRITE_VERIFY_12:
2776 case WRITE_VERIFY_16:
2777 /* MMC writing cannot be done via DMA helpers, because it sometimes
2778 * involves writing beyond the maximum LBA or to negative LBA (lead-in).
2779 * We might use scsi_block_dma_reqops as long as no writing commands are
2780 * seen, but performance usually isn't paramount on optical media. So,
2781 * just make scsi-block operate the same as scsi-generic for them.
2782 */
2783 if (s->qdev.type != TYPE_ROM) {
2784 return false;
2785 }
2786 break;
2787
2788 default:
2789 break;
2790 }
2791
2792 return true;
2793 }
2794
2795
2796 static int32_t scsi_block_dma_command(SCSIRequest *req, uint8_t *buf)
2797 {
2798 SCSIBlockReq *r = (SCSIBlockReq *)req;
2799 r->cmd = req->cmd.buf[0];
2800 switch (r->cmd >> 5) {
2801 case 0:
2802 /* 6-byte CDB. */
2803 r->cdb1 = r->group_number = 0;
2804 break;
2805 case 1:
2806 /* 10-byte CDB. */
2807 r->cdb1 = req->cmd.buf[1];
2808 r->group_number = req->cmd.buf[6];
2809 break;
2810 case 4:
2811 /* 12-byte CDB. */
2812 r->cdb1 = req->cmd.buf[1];
2813 r->group_number = req->cmd.buf[10];
2814 break;
2815 case 5:
2816 /* 16-byte CDB. */
2817 r->cdb1 = req->cmd.buf[1];
2818 r->group_number = req->cmd.buf[14];
2819 break;
2820 default:
2821 abort();
2822 }
2823
2824 if (r->cdb1 & 0xe0) {
2825 /* Protection information is not supported. */
2826 scsi_check_condition(&r->req, SENSE_CODE(INVALID_FIELD));
2827 return 0;
2828 }
2829
2830 r->req.status = &r->io_header.status;
2831 return scsi_disk_dma_command(req, buf);
2832 }
2833
2834 static const SCSIReqOps scsi_block_dma_reqops = {
2835 .size = sizeof(SCSIBlockReq),
2836 .free_req = scsi_free_request,
2837 .send_command = scsi_block_dma_command,
2838 .read_data = scsi_read_data,
2839 .write_data = scsi_write_data,
2840 .get_buf = scsi_get_buf,
2841 .load_request = scsi_disk_load_request,
2842 .save_request = scsi_disk_save_request,
2843 };
2844
2845 static SCSIRequest *scsi_block_new_request(SCSIDevice *d, uint32_t tag,
2846 uint32_t lun, uint8_t *buf,
2847 void *hba_private)
2848 {
2849 SCSIDiskState *s = DO_UPCAST(SCSIDiskState, qdev, d);
2850
2851 if (scsi_block_is_passthrough(s, buf)) {
2852 return scsi_req_alloc(&scsi_generic_req_ops, &s->qdev, tag, lun,
2853 hba_private);
2854 } else {
2855 return scsi_req_alloc(&scsi_block_dma_reqops, &s->qdev, tag, lun,
2856 hba_private);
2857 }
2858 }
2859
2860 static int scsi_block_parse_cdb(SCSIDevice *d, SCSICommand *cmd,
2861 uint8_t *buf, void *hba_private)
2862 {
2863 SCSIDiskState *s = DO_UPCAST(SCSIDiskState, qdev, d);
2864
2865 if (scsi_block_is_passthrough(s, buf)) {
2866 return scsi_bus_parse_cdb(&s->qdev, cmd, buf, hba_private);
2867 } else {
2868 return scsi_req_parse_cdb(&s->qdev, cmd, buf);
2869 }
2870 }
2871
2872 #endif
2873
2874 static
2875 BlockAIOCB *scsi_dma_readv(int64_t offset, QEMUIOVector *iov,
2876 BlockCompletionFunc *cb, void *cb_opaque,
2877 void *opaque)
2878 {
2879 SCSIDiskReq *r = opaque;
2880 SCSIDiskState *s = DO_UPCAST(SCSIDiskState, qdev, r->req.dev);
2881 return blk_aio_preadv(s->qdev.conf.blk, offset, iov, 0, cb, cb_opaque);
2882 }
2883
2884 static
2885 BlockAIOCB *scsi_dma_writev(int64_t offset, QEMUIOVector *iov,
2886 BlockCompletionFunc *cb, void *cb_opaque,
2887 void *opaque)
2888 {
2889 SCSIDiskReq *r = opaque;
2890 SCSIDiskState *s = DO_UPCAST(SCSIDiskState, qdev, r->req.dev);
2891 return blk_aio_pwritev(s->qdev.conf.blk, offset, iov, 0, cb, cb_opaque);
2892 }
2893
2894 static void scsi_disk_base_class_initfn(ObjectClass *klass, void *data)
2895 {
2896 DeviceClass *dc = DEVICE_CLASS(klass);
2897 SCSIDiskClass *sdc = SCSI_DISK_BASE_CLASS(klass);
2898
2899 dc->fw_name = "disk";
2900 dc->reset = scsi_disk_reset;
2901 sdc->dma_readv = scsi_dma_readv;
2902 sdc->dma_writev = scsi_dma_writev;
2903 sdc->need_fua_emulation = scsi_is_cmd_fua;
2904 }
2905
2906 static const TypeInfo scsi_disk_base_info = {
2907 .name = TYPE_SCSI_DISK_BASE,
2908 .parent = TYPE_SCSI_DEVICE,
2909 .class_init = scsi_disk_base_class_initfn,
2910 .instance_size = sizeof(SCSIDiskState),
2911 .class_size = sizeof(SCSIDiskClass),
2912 .abstract = true,
2913 };
2914
2915 #define DEFINE_SCSI_DISK_PROPERTIES() \
2916 DEFINE_BLOCK_PROPERTIES(SCSIDiskState, qdev.conf), \
2917 DEFINE_BLOCK_ERROR_PROPERTIES(SCSIDiskState, qdev.conf), \
2918 DEFINE_PROP_STRING("ver", SCSIDiskState, version), \
2919 DEFINE_PROP_STRING("serial", SCSIDiskState, serial), \
2920 DEFINE_PROP_STRING("vendor", SCSIDiskState, vendor), \
2921 DEFINE_PROP_STRING("product", SCSIDiskState, product)
2922
2923 static Property scsi_hd_properties[] = {
2924 DEFINE_SCSI_DISK_PROPERTIES(),
2925 DEFINE_PROP_BIT("removable", SCSIDiskState, features,
2926 SCSI_DISK_F_REMOVABLE, false),
2927 DEFINE_PROP_BIT("dpofua", SCSIDiskState, features,
2928 SCSI_DISK_F_DPOFUA, false),
2929 DEFINE_PROP_UINT64("wwn", SCSIDiskState, qdev.wwn, 0),
2930 DEFINE_PROP_UINT64("port_wwn", SCSIDiskState, qdev.port_wwn, 0),
2931 DEFINE_PROP_UINT16("port_index", SCSIDiskState, port_index, 0),
2932 DEFINE_PROP_UINT64("max_unmap_size", SCSIDiskState, max_unmap_size,
2933 DEFAULT_MAX_UNMAP_SIZE),
2934 DEFINE_PROP_UINT64("max_io_size", SCSIDiskState, max_io_size,
2935 DEFAULT_MAX_IO_SIZE),
2936 DEFINE_PROP_UINT16("rotation_rate", SCSIDiskState, rotation_rate, 0),
2937 DEFINE_BLOCK_CHS_PROPERTIES(SCSIDiskState, qdev.conf),
2938 DEFINE_PROP_END_OF_LIST(),
2939 };
2940
2941 static const VMStateDescription vmstate_scsi_disk_state = {
2942 .name = "scsi-disk",
2943 .version_id = 1,
2944 .minimum_version_id = 1,
2945 .fields = (VMStateField[]) {
2946 VMSTATE_SCSI_DEVICE(qdev, SCSIDiskState),
2947 VMSTATE_BOOL(media_changed, SCSIDiskState),
2948 VMSTATE_BOOL(media_event, SCSIDiskState),
2949 VMSTATE_BOOL(eject_request, SCSIDiskState),
2950 VMSTATE_BOOL(tray_open, SCSIDiskState),
2951 VMSTATE_BOOL(tray_locked, SCSIDiskState),
2952 VMSTATE_END_OF_LIST()
2953 }
2954 };
2955
2956 static void scsi_hd_class_initfn(ObjectClass *klass, void *data)
2957 {
2958 DeviceClass *dc = DEVICE_CLASS(klass);
2959 SCSIDeviceClass *sc = SCSI_DEVICE_CLASS(klass);
2960
2961 sc->realize = scsi_hd_realize;
2962 sc->alloc_req = scsi_new_request;
2963 sc->unit_attention_reported = scsi_disk_unit_attention_reported;
2964 dc->desc = "virtual SCSI disk";
2965 dc->props = scsi_hd_properties;
2966 dc->vmsd = &vmstate_scsi_disk_state;
2967 }
2968
2969 static const TypeInfo scsi_hd_info = {
2970 .name = "scsi-hd",
2971 .parent = TYPE_SCSI_DISK_BASE,
2972 .class_init = scsi_hd_class_initfn,
2973 };
2974
2975 static Property scsi_cd_properties[] = {
2976 DEFINE_SCSI_DISK_PROPERTIES(),
2977 DEFINE_PROP_UINT64("wwn", SCSIDiskState, qdev.wwn, 0),
2978 DEFINE_PROP_UINT64("port_wwn", SCSIDiskState, qdev.port_wwn, 0),
2979 DEFINE_PROP_UINT16("port_index", SCSIDiskState, port_index, 0),
2980 DEFINE_PROP_UINT64("max_io_size", SCSIDiskState, max_io_size,
2981 DEFAULT_MAX_IO_SIZE),
2982 DEFINE_PROP_END_OF_LIST(),
2983 };
2984
2985 static void scsi_cd_class_initfn(ObjectClass *klass, void *data)
2986 {
2987 DeviceClass *dc = DEVICE_CLASS(klass);
2988 SCSIDeviceClass *sc = SCSI_DEVICE_CLASS(klass);
2989
2990 sc->realize = scsi_cd_realize;
2991 sc->alloc_req = scsi_new_request;
2992 sc->unit_attention_reported = scsi_disk_unit_attention_reported;
2993 dc->desc = "virtual SCSI CD-ROM";
2994 dc->props = scsi_cd_properties;
2995 dc->vmsd = &vmstate_scsi_disk_state;
2996 }
2997
2998 static const TypeInfo scsi_cd_info = {
2999 .name = "scsi-cd",
3000 .parent = TYPE_SCSI_DISK_BASE,
3001 .class_init = scsi_cd_class_initfn,
3002 };
3003
3004 #ifdef __linux__
3005 static Property scsi_block_properties[] = {
3006 DEFINE_BLOCK_ERROR_PROPERTIES(SCSIDiskState, qdev.conf), \
3007 DEFINE_PROP_DRIVE("drive", SCSIDiskState, qdev.conf.blk),
3008 DEFINE_PROP_BOOL("share-rw", SCSIDiskState, qdev.conf.share_rw, false),
3009 DEFINE_PROP_UINT16("rotation_rate", SCSIDiskState, rotation_rate, 0),
3010 DEFINE_PROP_END_OF_LIST(),
3011 };
3012
3013 static void scsi_block_class_initfn(ObjectClass *klass, void *data)
3014 {
3015 DeviceClass *dc = DEVICE_CLASS(klass);
3016 SCSIDeviceClass *sc = SCSI_DEVICE_CLASS(klass);
3017 SCSIDiskClass *sdc = SCSI_DISK_BASE_CLASS(klass);
3018
3019 sc->realize = scsi_block_realize;
3020 sc->alloc_req = scsi_block_new_request;
3021 sc->parse_cdb = scsi_block_parse_cdb;
3022 sdc->dma_readv = scsi_block_dma_readv;
3023 sdc->dma_writev = scsi_block_dma_writev;
3024 sdc->need_fua_emulation = scsi_block_no_fua;
3025 dc->desc = "SCSI block device passthrough";
3026 dc->props = scsi_block_properties;
3027 dc->vmsd = &vmstate_scsi_disk_state;
3028 }
3029
3030 static const TypeInfo scsi_block_info = {
3031 .name = "scsi-block",
3032 .parent = TYPE_SCSI_DISK_BASE,
3033 .class_init = scsi_block_class_initfn,
3034 };
3035 #endif
3036
3037 static Property scsi_disk_properties[] = {
3038 DEFINE_SCSI_DISK_PROPERTIES(),
3039 DEFINE_PROP_BIT("removable", SCSIDiskState, features,
3040 SCSI_DISK_F_REMOVABLE, false),
3041 DEFINE_PROP_BIT("dpofua", SCSIDiskState, features,
3042 SCSI_DISK_F_DPOFUA, false),
3043 DEFINE_PROP_UINT64("wwn", SCSIDiskState, qdev.wwn, 0),
3044 DEFINE_PROP_UINT64("port_wwn", SCSIDiskState, qdev.port_wwn, 0),
3045 DEFINE_PROP_UINT16("port_index", SCSIDiskState, port_index, 0),
3046 DEFINE_PROP_UINT64("max_unmap_size", SCSIDiskState, max_unmap_size,
3047 DEFAULT_MAX_UNMAP_SIZE),
3048 DEFINE_PROP_UINT64("max_io_size", SCSIDiskState, max_io_size,
3049 DEFAULT_MAX_IO_SIZE),
3050 DEFINE_PROP_END_OF_LIST(),
3051 };
3052
3053 static void scsi_disk_class_initfn(ObjectClass *klass, void *data)
3054 {
3055 DeviceClass *dc = DEVICE_CLASS(klass);
3056 SCSIDeviceClass *sc = SCSI_DEVICE_CLASS(klass);
3057
3058 sc->realize = scsi_disk_realize;
3059 sc->alloc_req = scsi_new_request;
3060 sc->unit_attention_reported = scsi_disk_unit_attention_reported;
3061 dc->fw_name = "disk";
3062 dc->desc = "virtual SCSI disk or CD-ROM (legacy)";
3063 dc->reset = scsi_disk_reset;
3064 dc->props = scsi_disk_properties;
3065 dc->vmsd = &vmstate_scsi_disk_state;
3066 }
3067
3068 static const TypeInfo scsi_disk_info = {
3069 .name = "scsi-disk",
3070 .parent = TYPE_SCSI_DISK_BASE,
3071 .class_init = scsi_disk_class_initfn,
3072 };
3073
3074 static void scsi_disk_register_types(void)
3075 {
3076 type_register_static(&scsi_disk_base_info);
3077 type_register_static(&scsi_hd_info);
3078 type_register_static(&scsi_cd_info);
3079 #ifdef __linux__
3080 type_register_static(&scsi_block_info);
3081 #endif
3082 type_register_static(&scsi_disk_info);
3083 }
3084
3085 type_init(scsi_disk_register_types)
AR7 emulation for QEMU