root / hw / scsi / scsi-disk.c @ 49ab747f
History | View | Annotate | Download (74.7 kB)
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-common.h" |
32 |
#include "qemu/error-report.h" |
33 |
#include "hw/scsi/scsi.h" |
34 |
#include "block/scsi.h" |
35 |
#include "sysemu/sysemu.h" |
36 |
#include "sysemu/blockdev.h" |
37 |
#include "hw/block/block.h" |
38 |
#include "sysemu/dma.h" |
39 |
|
40 |
#ifdef __linux
|
41 |
#include <scsi/sg.h> |
42 |
#endif
|
43 |
|
44 |
#define SCSI_DMA_BUF_SIZE 131072 |
45 |
#define SCSI_MAX_INQUIRY_LEN 256 |
46 |
#define SCSI_MAX_MODE_LEN 256 |
47 |
|
48 |
#define DEFAULT_DISCARD_GRANULARITY 4096 |
49 |
|
50 |
typedef struct SCSIDiskState SCSIDiskState; |
51 |
|
52 |
typedef struct SCSIDiskReq { |
53 |
SCSIRequest req; |
54 |
/* Both sector and sector_count are in terms of qemu 512 byte blocks. */
|
55 |
uint64_t sector; |
56 |
uint32_t sector_count; |
57 |
uint32_t buflen; |
58 |
bool started;
|
59 |
struct iovec iov;
|
60 |
QEMUIOVector qiov; |
61 |
BlockAcctCookie acct; |
62 |
} SCSIDiskReq; |
63 |
|
64 |
#define SCSI_DISK_F_REMOVABLE 0 |
65 |
#define SCSI_DISK_F_DPOFUA 1 |
66 |
|
67 |
struct SCSIDiskState
|
68 |
{ |
69 |
SCSIDevice qdev; |
70 |
uint32_t features; |
71 |
bool media_changed;
|
72 |
bool media_event;
|
73 |
bool eject_request;
|
74 |
uint64_t wwn; |
75 |
QEMUBH *bh; |
76 |
char *version;
|
77 |
char *serial;
|
78 |
char *vendor;
|
79 |
char *product;
|
80 |
bool tray_open;
|
81 |
bool tray_locked;
|
82 |
}; |
83 |
|
84 |
static int scsi_handle_rw_error(SCSIDiskReq *r, int error); |
85 |
|
86 |
static void scsi_free_request(SCSIRequest *req) |
87 |
{ |
88 |
SCSIDiskReq *r = DO_UPCAST(SCSIDiskReq, req, req); |
89 |
|
90 |
qemu_vfree(r->iov.iov_base); |
91 |
} |
92 |
|
93 |
/* Helper function for command completion with sense. */
|
94 |
static void scsi_check_condition(SCSIDiskReq *r, SCSISense sense) |
95 |
{ |
96 |
DPRINTF("Command complete tag=0x%x sense=%d/%d/%d\n",
|
97 |
r->req.tag, sense.key, sense.asc, sense.ascq); |
98 |
scsi_req_build_sense(&r->req, sense); |
99 |
scsi_req_complete(&r->req, CHECK_CONDITION); |
100 |
} |
101 |
|
102 |
/* Cancel a pending data transfer. */
|
103 |
static void scsi_cancel_io(SCSIRequest *req) |
104 |
{ |
105 |
SCSIDiskReq *r = DO_UPCAST(SCSIDiskReq, req, req); |
106 |
|
107 |
DPRINTF("Cancel tag=0x%x\n", req->tag);
|
108 |
if (r->req.aiocb) {
|
109 |
bdrv_aio_cancel(r->req.aiocb); |
110 |
|
111 |
/* This reference was left in by scsi_*_data. We take ownership of
|
112 |
* it the moment scsi_req_cancel is called, independent of whether
|
113 |
* bdrv_aio_cancel completes the request or not. */
|
114 |
scsi_req_unref(&r->req); |
115 |
} |
116 |
r->req.aiocb = NULL;
|
117 |
} |
118 |
|
119 |
static uint32_t scsi_init_iovec(SCSIDiskReq *r, size_t size)
|
120 |
{ |
121 |
SCSIDiskState *s = DO_UPCAST(SCSIDiskState, qdev, r->req.dev); |
122 |
|
123 |
if (!r->iov.iov_base) {
|
124 |
r->buflen = size; |
125 |
r->iov.iov_base = qemu_blockalign(s->qdev.conf.bs, r->buflen); |
126 |
} |
127 |
r->iov.iov_len = MIN(r->sector_count * 512, r->buflen);
|
128 |
qemu_iovec_init_external(&r->qiov, &r->iov, 1);
|
129 |
return r->qiov.size / 512; |
130 |
} |
131 |
|
132 |
static void scsi_disk_save_request(QEMUFile *f, SCSIRequest *req) |
133 |
{ |
134 |
SCSIDiskReq *r = DO_UPCAST(SCSIDiskReq, req, req); |
135 |
|
136 |
qemu_put_be64s(f, &r->sector); |
137 |
qemu_put_be32s(f, &r->sector_count); |
138 |
qemu_put_be32s(f, &r->buflen); |
139 |
if (r->buflen) {
|
140 |
if (r->req.cmd.mode == SCSI_XFER_TO_DEV) {
|
141 |
qemu_put_buffer(f, r->iov.iov_base, r->iov.iov_len); |
142 |
} else if (!req->retry) { |
143 |
uint32_t len = r->iov.iov_len; |
144 |
qemu_put_be32s(f, &len); |
145 |
qemu_put_buffer(f, r->iov.iov_base, r->iov.iov_len); |
146 |
} |
147 |
} |
148 |
} |
149 |
|
150 |
static void scsi_disk_load_request(QEMUFile *f, SCSIRequest *req) |
151 |
{ |
152 |
SCSIDiskReq *r = DO_UPCAST(SCSIDiskReq, req, req); |
153 |
|
154 |
qemu_get_be64s(f, &r->sector); |
155 |
qemu_get_be32s(f, &r->sector_count); |
156 |
qemu_get_be32s(f, &r->buflen); |
157 |
if (r->buflen) {
|
158 |
scsi_init_iovec(r, r->buflen); |
159 |
if (r->req.cmd.mode == SCSI_XFER_TO_DEV) {
|
160 |
qemu_get_buffer(f, r->iov.iov_base, r->iov.iov_len); |
161 |
} else if (!r->req.retry) { |
162 |
uint32_t len; |
163 |
qemu_get_be32s(f, &len); |
164 |
r->iov.iov_len = len; |
165 |
assert(r->iov.iov_len <= r->buflen); |
166 |
qemu_get_buffer(f, r->iov.iov_base, r->iov.iov_len); |
167 |
} |
168 |
} |
169 |
|
170 |
qemu_iovec_init_external(&r->qiov, &r->iov, 1);
|
171 |
} |
172 |
|
173 |
static void scsi_aio_complete(void *opaque, int ret) |
174 |
{ |
175 |
SCSIDiskReq *r = (SCSIDiskReq *)opaque; |
176 |
SCSIDiskState *s = DO_UPCAST(SCSIDiskState, qdev, r->req.dev); |
177 |
|
178 |
assert(r->req.aiocb != NULL);
|
179 |
r->req.aiocb = NULL;
|
180 |
bdrv_acct_done(s->qdev.conf.bs, &r->acct); |
181 |
if (r->req.io_canceled) {
|
182 |
goto done;
|
183 |
} |
184 |
|
185 |
if (ret < 0) { |
186 |
if (scsi_handle_rw_error(r, -ret)) {
|
187 |
goto done;
|
188 |
} |
189 |
} |
190 |
|
191 |
scsi_req_complete(&r->req, GOOD); |
192 |
|
193 |
done:
|
194 |
if (!r->req.io_canceled) {
|
195 |
scsi_req_unref(&r->req); |
196 |
} |
197 |
} |
198 |
|
199 |
static bool scsi_is_cmd_fua(SCSICommand *cmd) |
200 |
{ |
201 |
switch (cmd->buf[0]) { |
202 |
case READ_10:
|
203 |
case READ_12:
|
204 |
case READ_16:
|
205 |
case WRITE_10:
|
206 |
case WRITE_12:
|
207 |
case WRITE_16:
|
208 |
return (cmd->buf[1] & 8) != 0; |
209 |
|
210 |
case VERIFY_10:
|
211 |
case VERIFY_12:
|
212 |
case VERIFY_16:
|
213 |
case WRITE_VERIFY_10:
|
214 |
case WRITE_VERIFY_12:
|
215 |
case WRITE_VERIFY_16:
|
216 |
return true; |
217 |
|
218 |
case READ_6:
|
219 |
case WRITE_6:
|
220 |
default:
|
221 |
return false; |
222 |
} |
223 |
} |
224 |
|
225 |
static void scsi_write_do_fua(SCSIDiskReq *r) |
226 |
{ |
227 |
SCSIDiskState *s = DO_UPCAST(SCSIDiskState, qdev, r->req.dev); |
228 |
|
229 |
if (r->req.io_canceled) {
|
230 |
goto done;
|
231 |
} |
232 |
|
233 |
if (scsi_is_cmd_fua(&r->req.cmd)) {
|
234 |
bdrv_acct_start(s->qdev.conf.bs, &r->acct, 0, BDRV_ACCT_FLUSH);
|
235 |
r->req.aiocb = bdrv_aio_flush(s->qdev.conf.bs, scsi_aio_complete, r); |
236 |
return;
|
237 |
} |
238 |
|
239 |
scsi_req_complete(&r->req, GOOD); |
240 |
|
241 |
done:
|
242 |
if (!r->req.io_canceled) {
|
243 |
scsi_req_unref(&r->req); |
244 |
} |
245 |
} |
246 |
|
247 |
static void scsi_dma_complete(void *opaque, int ret) |
248 |
{ |
249 |
SCSIDiskReq *r = (SCSIDiskReq *)opaque; |
250 |
SCSIDiskState *s = DO_UPCAST(SCSIDiskState, qdev, r->req.dev); |
251 |
|
252 |
assert(r->req.aiocb != NULL);
|
253 |
r->req.aiocb = NULL;
|
254 |
bdrv_acct_done(s->qdev.conf.bs, &r->acct); |
255 |
if (r->req.io_canceled) {
|
256 |
goto done;
|
257 |
} |
258 |
|
259 |
if (ret < 0) { |
260 |
if (scsi_handle_rw_error(r, -ret)) {
|
261 |
goto done;
|
262 |
} |
263 |
} |
264 |
|
265 |
r->sector += r->sector_count; |
266 |
r->sector_count = 0;
|
267 |
if (r->req.cmd.mode == SCSI_XFER_TO_DEV) {
|
268 |
scsi_write_do_fua(r); |
269 |
return;
|
270 |
} else {
|
271 |
scsi_req_complete(&r->req, GOOD); |
272 |
} |
273 |
|
274 |
done:
|
275 |
if (!r->req.io_canceled) {
|
276 |
scsi_req_unref(&r->req); |
277 |
} |
278 |
} |
279 |
|
280 |
static void scsi_read_complete(void * opaque, int ret) |
281 |
{ |
282 |
SCSIDiskReq *r = (SCSIDiskReq *)opaque; |
283 |
SCSIDiskState *s = DO_UPCAST(SCSIDiskState, qdev, r->req.dev); |
284 |
int n;
|
285 |
|
286 |
assert(r->req.aiocb != NULL);
|
287 |
r->req.aiocb = NULL;
|
288 |
bdrv_acct_done(s->qdev.conf.bs, &r->acct); |
289 |
if (r->req.io_canceled) {
|
290 |
goto done;
|
291 |
} |
292 |
|
293 |
if (ret < 0) { |
294 |
if (scsi_handle_rw_error(r, -ret)) {
|
295 |
goto done;
|
296 |
} |
297 |
} |
298 |
|
299 |
DPRINTF("Data ready tag=0x%x len=%zd\n", r->req.tag, r->qiov.size);
|
300 |
|
301 |
n = r->qiov.size / 512;
|
302 |
r->sector += n; |
303 |
r->sector_count -= n; |
304 |
scsi_req_data(&r->req, r->qiov.size); |
305 |
|
306 |
done:
|
307 |
if (!r->req.io_canceled) {
|
308 |
scsi_req_unref(&r->req); |
309 |
} |
310 |
} |
311 |
|
312 |
/* Actually issue a read to the block device. */
|
313 |
static void scsi_do_read(void *opaque, int ret) |
314 |
{ |
315 |
SCSIDiskReq *r = opaque; |
316 |
SCSIDiskState *s = DO_UPCAST(SCSIDiskState, qdev, r->req.dev); |
317 |
uint32_t n; |
318 |
|
319 |
if (r->req.aiocb != NULL) { |
320 |
r->req.aiocb = NULL;
|
321 |
bdrv_acct_done(s->qdev.conf.bs, &r->acct); |
322 |
} |
323 |
if (r->req.io_canceled) {
|
324 |
goto done;
|
325 |
} |
326 |
|
327 |
if (ret < 0) { |
328 |
if (scsi_handle_rw_error(r, -ret)) {
|
329 |
goto done;
|
330 |
} |
331 |
} |
332 |
|
333 |
/* The request is used as the AIO opaque value, so add a ref. */
|
334 |
scsi_req_ref(&r->req); |
335 |
|
336 |
if (r->req.sg) {
|
337 |
dma_acct_start(s->qdev.conf.bs, &r->acct, r->req.sg, BDRV_ACCT_READ); |
338 |
r->req.resid -= r->req.sg->size; |
339 |
r->req.aiocb = dma_bdrv_read(s->qdev.conf.bs, r->req.sg, r->sector, |
340 |
scsi_dma_complete, r); |
341 |
} else {
|
342 |
n = scsi_init_iovec(r, SCSI_DMA_BUF_SIZE); |
343 |
bdrv_acct_start(s->qdev.conf.bs, &r->acct, n * BDRV_SECTOR_SIZE, BDRV_ACCT_READ); |
344 |
r->req.aiocb = bdrv_aio_readv(s->qdev.conf.bs, r->sector, &r->qiov, n, |
345 |
scsi_read_complete, r); |
346 |
} |
347 |
|
348 |
done:
|
349 |
if (!r->req.io_canceled) {
|
350 |
scsi_req_unref(&r->req); |
351 |
} |
352 |
} |
353 |
|
354 |
/* Read more data from scsi device into buffer. */
|
355 |
static void scsi_read_data(SCSIRequest *req) |
356 |
{ |
357 |
SCSIDiskReq *r = DO_UPCAST(SCSIDiskReq, req, req); |
358 |
SCSIDiskState *s = DO_UPCAST(SCSIDiskState, qdev, r->req.dev); |
359 |
bool first;
|
360 |
|
361 |
DPRINTF("Read sector_count=%d\n", r->sector_count);
|
362 |
if (r->sector_count == 0) { |
363 |
/* This also clears the sense buffer for REQUEST SENSE. */
|
364 |
scsi_req_complete(&r->req, GOOD); |
365 |
return;
|
366 |
} |
367 |
|
368 |
/* No data transfer may already be in progress */
|
369 |
assert(r->req.aiocb == NULL);
|
370 |
|
371 |
/* The request is used as the AIO opaque value, so add a ref. */
|
372 |
scsi_req_ref(&r->req); |
373 |
if (r->req.cmd.mode == SCSI_XFER_TO_DEV) {
|
374 |
DPRINTF("Data transfer direction invalid\n");
|
375 |
scsi_read_complete(r, -EINVAL); |
376 |
return;
|
377 |
} |
378 |
|
379 |
if (s->tray_open) {
|
380 |
scsi_read_complete(r, -ENOMEDIUM); |
381 |
return;
|
382 |
} |
383 |
|
384 |
first = !r->started; |
385 |
r->started = true;
|
386 |
if (first && scsi_is_cmd_fua(&r->req.cmd)) {
|
387 |
bdrv_acct_start(s->qdev.conf.bs, &r->acct, 0, BDRV_ACCT_FLUSH);
|
388 |
r->req.aiocb = bdrv_aio_flush(s->qdev.conf.bs, scsi_do_read, r); |
389 |
} else {
|
390 |
scsi_do_read(r, 0);
|
391 |
} |
392 |
} |
393 |
|
394 |
/*
|
395 |
* scsi_handle_rw_error has two return values. 0 means that the error
|
396 |
* must be ignored, 1 means that the error has been processed and the
|
397 |
* caller should not do anything else for this request. Note that
|
398 |
* scsi_handle_rw_error always manages its reference counts, independent
|
399 |
* of the return value.
|
400 |
*/
|
401 |
static int scsi_handle_rw_error(SCSIDiskReq *r, int error) |
402 |
{ |
403 |
bool is_read = (r->req.cmd.xfer == SCSI_XFER_FROM_DEV);
|
404 |
SCSIDiskState *s = DO_UPCAST(SCSIDiskState, qdev, r->req.dev); |
405 |
BlockErrorAction action = bdrv_get_error_action(s->qdev.conf.bs, is_read, error); |
406 |
|
407 |
if (action == BDRV_ACTION_REPORT) {
|
408 |
switch (error) {
|
409 |
case ENOMEDIUM:
|
410 |
scsi_check_condition(r, SENSE_CODE(NO_MEDIUM)); |
411 |
break;
|
412 |
case ENOMEM:
|
413 |
scsi_check_condition(r, SENSE_CODE(TARGET_FAILURE)); |
414 |
break;
|
415 |
case EINVAL:
|
416 |
scsi_check_condition(r, SENSE_CODE(INVALID_FIELD)); |
417 |
break;
|
418 |
default:
|
419 |
scsi_check_condition(r, SENSE_CODE(IO_ERROR)); |
420 |
break;
|
421 |
} |
422 |
} |
423 |
bdrv_error_action(s->qdev.conf.bs, action, is_read, error); |
424 |
if (action == BDRV_ACTION_STOP) {
|
425 |
scsi_req_retry(&r->req); |
426 |
} |
427 |
return action != BDRV_ACTION_IGNORE;
|
428 |
} |
429 |
|
430 |
static void scsi_write_complete(void * opaque, int ret) |
431 |
{ |
432 |
SCSIDiskReq *r = (SCSIDiskReq *)opaque; |
433 |
SCSIDiskState *s = DO_UPCAST(SCSIDiskState, qdev, r->req.dev); |
434 |
uint32_t n; |
435 |
|
436 |
if (r->req.aiocb != NULL) { |
437 |
r->req.aiocb = NULL;
|
438 |
bdrv_acct_done(s->qdev.conf.bs, &r->acct); |
439 |
} |
440 |
if (r->req.io_canceled) {
|
441 |
goto done;
|
442 |
} |
443 |
|
444 |
if (ret < 0) { |
445 |
if (scsi_handle_rw_error(r, -ret)) {
|
446 |
goto done;
|
447 |
} |
448 |
} |
449 |
|
450 |
n = r->qiov.size / 512;
|
451 |
r->sector += n; |
452 |
r->sector_count -= n; |
453 |
if (r->sector_count == 0) { |
454 |
scsi_write_do_fua(r); |
455 |
return;
|
456 |
} else {
|
457 |
scsi_init_iovec(r, SCSI_DMA_BUF_SIZE); |
458 |
DPRINTF("Write complete tag=0x%x more=%zd\n", r->req.tag, r->qiov.size);
|
459 |
scsi_req_data(&r->req, r->qiov.size); |
460 |
} |
461 |
|
462 |
done:
|
463 |
if (!r->req.io_canceled) {
|
464 |
scsi_req_unref(&r->req); |
465 |
} |
466 |
} |
467 |
|
468 |
static void scsi_write_data(SCSIRequest *req) |
469 |
{ |
470 |
SCSIDiskReq *r = DO_UPCAST(SCSIDiskReq, req, req); |
471 |
SCSIDiskState *s = DO_UPCAST(SCSIDiskState, qdev, r->req.dev); |
472 |
uint32_t n; |
473 |
|
474 |
/* No data transfer may already be in progress */
|
475 |
assert(r->req.aiocb == NULL);
|
476 |
|
477 |
/* The request is used as the AIO opaque value, so add a ref. */
|
478 |
scsi_req_ref(&r->req); |
479 |
if (r->req.cmd.mode != SCSI_XFER_TO_DEV) {
|
480 |
DPRINTF("Data transfer direction invalid\n");
|
481 |
scsi_write_complete(r, -EINVAL); |
482 |
return;
|
483 |
} |
484 |
|
485 |
if (!r->req.sg && !r->qiov.size) {
|
486 |
/* Called for the first time. Ask the driver to send us more data. */
|
487 |
r->started = true;
|
488 |
scsi_write_complete(r, 0);
|
489 |
return;
|
490 |
} |
491 |
if (s->tray_open) {
|
492 |
scsi_write_complete(r, -ENOMEDIUM); |
493 |
return;
|
494 |
} |
495 |
|
496 |
if (r->req.cmd.buf[0] == VERIFY_10 || r->req.cmd.buf[0] == VERIFY_12 || |
497 |
r->req.cmd.buf[0] == VERIFY_16) {
|
498 |
if (r->req.sg) {
|
499 |
scsi_dma_complete(r, 0);
|
500 |
} else {
|
501 |
scsi_write_complete(r, 0);
|
502 |
} |
503 |
return;
|
504 |
} |
505 |
|
506 |
if (r->req.sg) {
|
507 |
dma_acct_start(s->qdev.conf.bs, &r->acct, r->req.sg, BDRV_ACCT_WRITE); |
508 |
r->req.resid -= r->req.sg->size; |
509 |
r->req.aiocb = dma_bdrv_write(s->qdev.conf.bs, r->req.sg, r->sector, |
510 |
scsi_dma_complete, r); |
511 |
} else {
|
512 |
n = r->qiov.size / 512;
|
513 |
bdrv_acct_start(s->qdev.conf.bs, &r->acct, n * BDRV_SECTOR_SIZE, BDRV_ACCT_WRITE); |
514 |
r->req.aiocb = bdrv_aio_writev(s->qdev.conf.bs, r->sector, &r->qiov, n, |
515 |
scsi_write_complete, r); |
516 |
} |
517 |
} |
518 |
|
519 |
/* Return a pointer to the data buffer. */
|
520 |
static uint8_t *scsi_get_buf(SCSIRequest *req)
|
521 |
{ |
522 |
SCSIDiskReq *r = DO_UPCAST(SCSIDiskReq, req, req); |
523 |
|
524 |
return (uint8_t *)r->iov.iov_base;
|
525 |
} |
526 |
|
527 |
static int scsi_disk_emulate_inquiry(SCSIRequest *req, uint8_t *outbuf) |
528 |
{ |
529 |
SCSIDiskState *s = DO_UPCAST(SCSIDiskState, qdev, req->dev); |
530 |
int buflen = 0; |
531 |
int start;
|
532 |
|
533 |
if (req->cmd.buf[1] & 0x1) { |
534 |
/* Vital product data */
|
535 |
uint8_t page_code = req->cmd.buf[2];
|
536 |
|
537 |
outbuf[buflen++] = s->qdev.type & 0x1f;
|
538 |
outbuf[buflen++] = page_code ; // this page
|
539 |
outbuf[buflen++] = 0x00;
|
540 |
outbuf[buflen++] = 0x00;
|
541 |
start = buflen; |
542 |
|
543 |
switch (page_code) {
|
544 |
case 0x00: /* Supported page codes, mandatory */ |
545 |
{ |
546 |
DPRINTF("Inquiry EVPD[Supported pages] "
|
547 |
"buffer size %zd\n", req->cmd.xfer);
|
548 |
outbuf[buflen++] = 0x00; // list of supported pages (this page) |
549 |
if (s->serial) {
|
550 |
outbuf[buflen++] = 0x80; // unit serial number |
551 |
} |
552 |
outbuf[buflen++] = 0x83; // device identification |
553 |
if (s->qdev.type == TYPE_DISK) {
|
554 |
outbuf[buflen++] = 0xb0; // block limits |
555 |
outbuf[buflen++] = 0xb2; // thin provisioning |
556 |
} |
557 |
break;
|
558 |
} |
559 |
case 0x80: /* Device serial number, optional */ |
560 |
{ |
561 |
int l;
|
562 |
|
563 |
if (!s->serial) {
|
564 |
DPRINTF("Inquiry (EVPD[Serial number] not supported\n");
|
565 |
return -1; |
566 |
} |
567 |
|
568 |
l = strlen(s->serial); |
569 |
if (l > 20) { |
570 |
l = 20;
|
571 |
} |
572 |
|
573 |
DPRINTF("Inquiry EVPD[Serial number] "
|
574 |
"buffer size %zd\n", req->cmd.xfer);
|
575 |
memcpy(outbuf+buflen, s->serial, l); |
576 |
buflen += l; |
577 |
break;
|
578 |
} |
579 |
|
580 |
case 0x83: /* Device identification page, mandatory */ |
581 |
{ |
582 |
const char *str = s->serial ?: bdrv_get_device_name(s->qdev.conf.bs); |
583 |
int max_len = s->serial ? 20 : 255 - 8; |
584 |
int id_len = strlen(str);
|
585 |
|
586 |
if (id_len > max_len) {
|
587 |
id_len = max_len; |
588 |
} |
589 |
DPRINTF("Inquiry EVPD[Device identification] "
|
590 |
"buffer size %zd\n", req->cmd.xfer);
|
591 |
|
592 |
outbuf[buflen++] = 0x2; // ASCII |
593 |
outbuf[buflen++] = 0; // not officially assigned |
594 |
outbuf[buflen++] = 0; // reserved |
595 |
outbuf[buflen++] = id_len; // length of data following
|
596 |
memcpy(outbuf+buflen, str, id_len); |
597 |
buflen += id_len; |
598 |
|
599 |
if (s->wwn) {
|
600 |
outbuf[buflen++] = 0x1; // Binary |
601 |
outbuf[buflen++] = 0x3; // NAA |
602 |
outbuf[buflen++] = 0; // reserved |
603 |
outbuf[buflen++] = 8;
|
604 |
stq_be_p(&outbuf[buflen], s->wwn); |
605 |
buflen += 8;
|
606 |
} |
607 |
break;
|
608 |
} |
609 |
case 0xb0: /* block limits */ |
610 |
{ |
611 |
unsigned int unmap_sectors = |
612 |
s->qdev.conf.discard_granularity / s->qdev.blocksize; |
613 |
unsigned int min_io_size = |
614 |
s->qdev.conf.min_io_size / s->qdev.blocksize; |
615 |
unsigned int opt_io_size = |
616 |
s->qdev.conf.opt_io_size / s->qdev.blocksize; |
617 |
|
618 |
if (s->qdev.type == TYPE_ROM) {
|
619 |
DPRINTF("Inquiry (EVPD[%02X] not supported for CDROM\n",
|
620 |
page_code); |
621 |
return -1; |
622 |
} |
623 |
/* required VPD size with unmap support */
|
624 |
buflen = 0x40;
|
625 |
memset(outbuf + 4, 0, buflen - 4); |
626 |
|
627 |
/* optimal transfer length granularity */
|
628 |
outbuf[6] = (min_io_size >> 8) & 0xff; |
629 |
outbuf[7] = min_io_size & 0xff; |
630 |
|
631 |
/* optimal transfer length */
|
632 |
outbuf[12] = (opt_io_size >> 24) & 0xff; |
633 |
outbuf[13] = (opt_io_size >> 16) & 0xff; |
634 |
outbuf[14] = (opt_io_size >> 8) & 0xff; |
635 |
outbuf[15] = opt_io_size & 0xff; |
636 |
|
637 |
/* optimal unmap granularity */
|
638 |
outbuf[28] = (unmap_sectors >> 24) & 0xff; |
639 |
outbuf[29] = (unmap_sectors >> 16) & 0xff; |
640 |
outbuf[30] = (unmap_sectors >> 8) & 0xff; |
641 |
outbuf[31] = unmap_sectors & 0xff; |
642 |
break;
|
643 |
} |
644 |
case 0xb2: /* thin provisioning */ |
645 |
{ |
646 |
buflen = 8;
|
647 |
outbuf[4] = 0; |
648 |
outbuf[5] = 0xe0; /* unmap & write_same 10/16 all supported */ |
649 |
outbuf[6] = s->qdev.conf.discard_granularity ? 2 : 1; |
650 |
outbuf[7] = 0; |
651 |
break;
|
652 |
} |
653 |
default:
|
654 |
return -1; |
655 |
} |
656 |
/* done with EVPD */
|
657 |
assert(buflen - start <= 255);
|
658 |
outbuf[start - 1] = buflen - start;
|
659 |
return buflen;
|
660 |
} |
661 |
|
662 |
/* Standard INQUIRY data */
|
663 |
if (req->cmd.buf[2] != 0) { |
664 |
return -1; |
665 |
} |
666 |
|
667 |
/* PAGE CODE == 0 */
|
668 |
buflen = req->cmd.xfer; |
669 |
if (buflen > SCSI_MAX_INQUIRY_LEN) {
|
670 |
buflen = SCSI_MAX_INQUIRY_LEN; |
671 |
} |
672 |
|
673 |
outbuf[0] = s->qdev.type & 0x1f; |
674 |
outbuf[1] = (s->features & (1 << SCSI_DISK_F_REMOVABLE)) ? 0x80 : 0; |
675 |
|
676 |
strpadcpy((char *) &outbuf[16], 16, s->product, ' '); |
677 |
strpadcpy((char *) &outbuf[8], 8, s->vendor, ' '); |
678 |
|
679 |
memset(&outbuf[32], 0, 4); |
680 |
memcpy(&outbuf[32], s->version, MIN(4, strlen(s->version))); |
681 |
/*
|
682 |
* We claim conformance to SPC-3, which is required for guests
|
683 |
* to ask for modern features like READ CAPACITY(16) or the
|
684 |
* block characteristics VPD page by default. Not all of SPC-3
|
685 |
* is actually implemented, but we're good enough.
|
686 |
*/
|
687 |
outbuf[2] = 5; |
688 |
outbuf[3] = 2 | 0x10; /* Format 2, HiSup */ |
689 |
|
690 |
if (buflen > 36) { |
691 |
outbuf[4] = buflen - 5; /* Additional Length = (Len - 1) - 4 */ |
692 |
} else {
|
693 |
/* If the allocation length of CDB is too small,
|
694 |
the additional length is not adjusted */
|
695 |
outbuf[4] = 36 - 5; |
696 |
} |
697 |
|
698 |
/* Sync data transfer and TCQ. */
|
699 |
outbuf[7] = 0x10 | (req->bus->info->tcq ? 0x02 : 0); |
700 |
return buflen;
|
701 |
} |
702 |
|
703 |
static inline bool media_is_dvd(SCSIDiskState *s) |
704 |
{ |
705 |
uint64_t nb_sectors; |
706 |
if (s->qdev.type != TYPE_ROM) {
|
707 |
return false; |
708 |
} |
709 |
if (!bdrv_is_inserted(s->qdev.conf.bs)) {
|
710 |
return false; |
711 |
} |
712 |
bdrv_get_geometry(s->qdev.conf.bs, &nb_sectors); |
713 |
return nb_sectors > CD_MAX_SECTORS;
|
714 |
} |
715 |
|
716 |
static inline bool media_is_cd(SCSIDiskState *s) |
717 |
{ |
718 |
uint64_t nb_sectors; |
719 |
if (s->qdev.type != TYPE_ROM) {
|
720 |
return false; |
721 |
} |
722 |
if (!bdrv_is_inserted(s->qdev.conf.bs)) {
|
723 |
return false; |
724 |
} |
725 |
bdrv_get_geometry(s->qdev.conf.bs, &nb_sectors); |
726 |
return nb_sectors <= CD_MAX_SECTORS;
|
727 |
} |
728 |
|
729 |
static int scsi_read_disc_information(SCSIDiskState *s, SCSIDiskReq *r, |
730 |
uint8_t *outbuf) |
731 |
{ |
732 |
uint8_t type = r->req.cmd.buf[1] & 7; |
733 |
|
734 |
if (s->qdev.type != TYPE_ROM) {
|
735 |
return -1; |
736 |
} |
737 |
|
738 |
/* Types 1/2 are only defined for Blu-Ray. */
|
739 |
if (type != 0) { |
740 |
scsi_check_condition(r, SENSE_CODE(INVALID_FIELD)); |
741 |
return -1; |
742 |
} |
743 |
|
744 |
memset(outbuf, 0, 34); |
745 |
outbuf[1] = 32; |
746 |
outbuf[2] = 0xe; /* last session complete, disc finalized */ |
747 |
outbuf[3] = 1; /* first track on disc */ |
748 |
outbuf[4] = 1; /* # of sessions */ |
749 |
outbuf[5] = 1; /* first track of last session */ |
750 |
outbuf[6] = 1; /* last track of last session */ |
751 |
outbuf[7] = 0x20; /* unrestricted use */ |
752 |
outbuf[8] = 0x00; /* CD-ROM or DVD-ROM */ |
753 |
/* 9-10-11: most significant byte corresponding bytes 4-5-6 */
|
754 |
/* 12-23: not meaningful for CD-ROM or DVD-ROM */
|
755 |
/* 24-31: disc bar code */
|
756 |
/* 32: disc application code */
|
757 |
/* 33: number of OPC tables */
|
758 |
|
759 |
return 34; |
760 |
} |
761 |
|
762 |
static int scsi_read_dvd_structure(SCSIDiskState *s, SCSIDiskReq *r, |
763 |
uint8_t *outbuf) |
764 |
{ |
765 |
static const int rds_caps_size[5] = { |
766 |
[0] = 2048 + 4, |
767 |
[1] = 4 + 4, |
768 |
[3] = 188 + 4, |
769 |
[4] = 2048 + 4, |
770 |
}; |
771 |
|
772 |
uint8_t media = r->req.cmd.buf[1];
|
773 |
uint8_t layer = r->req.cmd.buf[6];
|
774 |
uint8_t format = r->req.cmd.buf[7];
|
775 |
int size = -1; |
776 |
|
777 |
if (s->qdev.type != TYPE_ROM) {
|
778 |
return -1; |
779 |
} |
780 |
if (media != 0) { |
781 |
scsi_check_condition(r, SENSE_CODE(INVALID_FIELD)); |
782 |
return -1; |
783 |
} |
784 |
|
785 |
if (format != 0xff) { |
786 |
if (s->tray_open || !bdrv_is_inserted(s->qdev.conf.bs)) {
|
787 |
scsi_check_condition(r, SENSE_CODE(NO_MEDIUM)); |
788 |
return -1; |
789 |
} |
790 |
if (media_is_cd(s)) {
|
791 |
scsi_check_condition(r, SENSE_CODE(INCOMPATIBLE_FORMAT)); |
792 |
return -1; |
793 |
} |
794 |
if (format >= ARRAY_SIZE(rds_caps_size)) {
|
795 |
return -1; |
796 |
} |
797 |
size = rds_caps_size[format]; |
798 |
memset(outbuf, 0, size);
|
799 |
} |
800 |
|
801 |
switch (format) {
|
802 |
case 0x00: { |
803 |
/* Physical format information */
|
804 |
uint64_t nb_sectors; |
805 |
if (layer != 0) { |
806 |
goto fail;
|
807 |
} |
808 |
bdrv_get_geometry(s->qdev.conf.bs, &nb_sectors); |
809 |
|
810 |
outbuf[4] = 1; /* DVD-ROM, part version 1 */ |
811 |
outbuf[5] = 0xf; /* 120mm disc, minimum rate unspecified */ |
812 |
outbuf[6] = 1; /* one layer, read-only (per MMC-2 spec) */ |
813 |
outbuf[7] = 0; /* default densities */ |
814 |
|
815 |
stl_be_p(&outbuf[12], (nb_sectors >> 2) - 1); /* end sector */ |
816 |
stl_be_p(&outbuf[16], (nb_sectors >> 2) - 1); /* l0 end sector */ |
817 |
break;
|
818 |
} |
819 |
|
820 |
case 0x01: /* DVD copyright information, all zeros */ |
821 |
break;
|
822 |
|
823 |
case 0x03: /* BCA information - invalid field for no BCA info */ |
824 |
return -1; |
825 |
|
826 |
case 0x04: /* DVD disc manufacturing information, all zeros */ |
827 |
break;
|
828 |
|
829 |
case 0xff: { /* List capabilities */ |
830 |
int i;
|
831 |
size = 4;
|
832 |
for (i = 0; i < ARRAY_SIZE(rds_caps_size); i++) { |
833 |
if (!rds_caps_size[i]) {
|
834 |
continue;
|
835 |
} |
836 |
outbuf[size] = i; |
837 |
outbuf[size + 1] = 0x40; /* Not writable, readable */ |
838 |
stw_be_p(&outbuf[size + 2], rds_caps_size[i]);
|
839 |
size += 4;
|
840 |
} |
841 |
break;
|
842 |
} |
843 |
|
844 |
default:
|
845 |
return -1; |
846 |
} |
847 |
|
848 |
/* Size of buffer, not including 2 byte size field */
|
849 |
stw_be_p(outbuf, size - 2);
|
850 |
return size;
|
851 |
|
852 |
fail:
|
853 |
return -1; |
854 |
} |
855 |
|
856 |
static int scsi_event_status_media(SCSIDiskState *s, uint8_t *outbuf) |
857 |
{ |
858 |
uint8_t event_code, media_status; |
859 |
|
860 |
media_status = 0;
|
861 |
if (s->tray_open) {
|
862 |
media_status = MS_TRAY_OPEN; |
863 |
} else if (bdrv_is_inserted(s->qdev.conf.bs)) { |
864 |
media_status = MS_MEDIA_PRESENT; |
865 |
} |
866 |
|
867 |
/* Event notification descriptor */
|
868 |
event_code = MEC_NO_CHANGE; |
869 |
if (media_status != MS_TRAY_OPEN) {
|
870 |
if (s->media_event) {
|
871 |
event_code = MEC_NEW_MEDIA; |
872 |
s->media_event = false;
|
873 |
} else if (s->eject_request) { |
874 |
event_code = MEC_EJECT_REQUESTED; |
875 |
s->eject_request = false;
|
876 |
} |
877 |
} |
878 |
|
879 |
outbuf[0] = event_code;
|
880 |
outbuf[1] = media_status;
|
881 |
|
882 |
/* These fields are reserved, just clear them. */
|
883 |
outbuf[2] = 0; |
884 |
outbuf[3] = 0; |
885 |
return 4; |
886 |
} |
887 |
|
888 |
static int scsi_get_event_status_notification(SCSIDiskState *s, SCSIDiskReq *r, |
889 |
uint8_t *outbuf) |
890 |
{ |
891 |
int size;
|
892 |
uint8_t *buf = r->req.cmd.buf; |
893 |
uint8_t notification_class_request = buf[4];
|
894 |
if (s->qdev.type != TYPE_ROM) {
|
895 |
return -1; |
896 |
} |
897 |
if ((buf[1] & 1) == 0) { |
898 |
/* asynchronous */
|
899 |
return -1; |
900 |
} |
901 |
|
902 |
size = 4;
|
903 |
outbuf[0] = outbuf[1] = 0; |
904 |
outbuf[3] = 1 << GESN_MEDIA; /* supported events */ |
905 |
if (notification_class_request & (1 << GESN_MEDIA)) { |
906 |
outbuf[2] = GESN_MEDIA;
|
907 |
size += scsi_event_status_media(s, &outbuf[size]); |
908 |
} else {
|
909 |
outbuf[2] = 0x80; |
910 |
} |
911 |
stw_be_p(outbuf, size - 4);
|
912 |
return size;
|
913 |
} |
914 |
|
915 |
static int scsi_get_configuration(SCSIDiskState *s, uint8_t *outbuf) |
916 |
{ |
917 |
int current;
|
918 |
|
919 |
if (s->qdev.type != TYPE_ROM) {
|
920 |
return -1; |
921 |
} |
922 |
current = media_is_dvd(s) ? MMC_PROFILE_DVD_ROM : MMC_PROFILE_CD_ROM; |
923 |
memset(outbuf, 0, 40); |
924 |
stl_be_p(&outbuf[0], 36); /* Bytes after the data length field */ |
925 |
stw_be_p(&outbuf[6], current);
|
926 |
/* outbuf[8] - outbuf[19]: Feature 0 - Profile list */
|
927 |
outbuf[10] = 0x03; /* persistent, current */ |
928 |
outbuf[11] = 8; /* two profiles */ |
929 |
stw_be_p(&outbuf[12], MMC_PROFILE_DVD_ROM);
|
930 |
outbuf[14] = (current == MMC_PROFILE_DVD_ROM);
|
931 |
stw_be_p(&outbuf[16], MMC_PROFILE_CD_ROM);
|
932 |
outbuf[18] = (current == MMC_PROFILE_CD_ROM);
|
933 |
/* outbuf[20] - outbuf[31]: Feature 1 - Core feature */
|
934 |
stw_be_p(&outbuf[20], 1); |
935 |
outbuf[22] = 0x08 | 0x03; /* version 2, persistent, current */ |
936 |
outbuf[23] = 8; |
937 |
stl_be_p(&outbuf[24], 1); /* SCSI */ |
938 |
outbuf[28] = 1; /* DBE = 1, mandatory */ |
939 |
/* outbuf[32] - outbuf[39]: Feature 3 - Removable media feature */
|
940 |
stw_be_p(&outbuf[32], 3); |
941 |
outbuf[34] = 0x08 | 0x03; /* version 2, persistent, current */ |
942 |
outbuf[35] = 4; |
943 |
outbuf[36] = 0x39; /* tray, load=1, eject=1, unlocked at powerup, lock=1 */ |
944 |
/* TODO: Random readable, CD read, DVD read, drive serial number,
|
945 |
power management */
|
946 |
return 40; |
947 |
} |
948 |
|
949 |
static int scsi_emulate_mechanism_status(SCSIDiskState *s, uint8_t *outbuf) |
950 |
{ |
951 |
if (s->qdev.type != TYPE_ROM) {
|
952 |
return -1; |
953 |
} |
954 |
memset(outbuf, 0, 8); |
955 |
outbuf[5] = 1; /* CD-ROM */ |
956 |
return 8; |
957 |
} |
958 |
|
959 |
static int mode_sense_page(SCSIDiskState *s, int page, uint8_t **p_outbuf, |
960 |
int page_control)
|
961 |
{ |
962 |
static const int mode_sense_valid[0x3f] = { |
963 |
[MODE_PAGE_HD_GEOMETRY] = (1 << TYPE_DISK),
|
964 |
[MODE_PAGE_FLEXIBLE_DISK_GEOMETRY] = (1 << TYPE_DISK),
|
965 |
[MODE_PAGE_CACHING] = (1 << TYPE_DISK) | (1 << TYPE_ROM), |
966 |
[MODE_PAGE_R_W_ERROR] = (1 << TYPE_DISK) | (1 << TYPE_ROM), |
967 |
[MODE_PAGE_AUDIO_CTL] = (1 << TYPE_ROM),
|
968 |
[MODE_PAGE_CAPABILITIES] = (1 << TYPE_ROM),
|
969 |
}; |
970 |
|
971 |
uint8_t *p = *p_outbuf + 2;
|
972 |
int length;
|
973 |
|
974 |
if ((mode_sense_valid[page] & (1 << s->qdev.type)) == 0) { |
975 |
return -1; |
976 |
} |
977 |
|
978 |
/*
|
979 |
* If Changeable Values are requested, a mask denoting those mode parameters
|
980 |
* that are changeable shall be returned. As we currently don't support
|
981 |
* parameter changes via MODE_SELECT all bits are returned set to zero.
|
982 |
* The buffer was already menset to zero by the caller of this function.
|
983 |
*
|
984 |
* The offsets here are off by two compared to the descriptions in the
|
985 |
* SCSI specs, because those include a 2-byte header. This is unfortunate,
|
986 |
* but it is done so that offsets are consistent within our implementation
|
987 |
* of MODE SENSE and MODE SELECT. MODE SELECT has to deal with both
|
988 |
* 2-byte and 4-byte headers.
|
989 |
*/
|
990 |
switch (page) {
|
991 |
case MODE_PAGE_HD_GEOMETRY:
|
992 |
length = 0x16;
|
993 |
if (page_control == 1) { /* Changeable Values */ |
994 |
break;
|
995 |
} |
996 |
/* if a geometry hint is available, use it */
|
997 |
p[0] = (s->qdev.conf.cyls >> 16) & 0xff; |
998 |
p[1] = (s->qdev.conf.cyls >> 8) & 0xff; |
999 |
p[2] = s->qdev.conf.cyls & 0xff; |
1000 |
p[3] = s->qdev.conf.heads & 0xff; |
1001 |
/* Write precomp start cylinder, disabled */
|
1002 |
p[4] = (s->qdev.conf.cyls >> 16) & 0xff; |
1003 |
p[5] = (s->qdev.conf.cyls >> 8) & 0xff; |
1004 |
p[6] = s->qdev.conf.cyls & 0xff; |
1005 |
/* Reduced current start cylinder, disabled */
|
1006 |
p[7] = (s->qdev.conf.cyls >> 16) & 0xff; |
1007 |
p[8] = (s->qdev.conf.cyls >> 8) & 0xff; |
1008 |
p[9] = s->qdev.conf.cyls & 0xff; |
1009 |
/* Device step rate [ns], 200ns */
|
1010 |
p[10] = 0; |
1011 |
p[11] = 200; |
1012 |
/* Landing zone cylinder */
|
1013 |
p[12] = 0xff; |
1014 |
p[13] = 0xff; |
1015 |
p[14] = 0xff; |
1016 |
/* Medium rotation rate [rpm], 5400 rpm */
|
1017 |
p[18] = (5400 >> 8) & 0xff; |
1018 |
p[19] = 5400 & 0xff; |
1019 |
break;
|
1020 |
|
1021 |
case MODE_PAGE_FLEXIBLE_DISK_GEOMETRY:
|
1022 |
length = 0x1e;
|
1023 |
if (page_control == 1) { /* Changeable Values */ |
1024 |
break;
|
1025 |
} |
1026 |
/* Transfer rate [kbit/s], 5Mbit/s */
|
1027 |
p[0] = 5000 >> 8; |
1028 |
p[1] = 5000 & 0xff; |
1029 |
/* if a geometry hint is available, use it */
|
1030 |
p[2] = s->qdev.conf.heads & 0xff; |
1031 |
p[3] = s->qdev.conf.secs & 0xff; |
1032 |
p[4] = s->qdev.blocksize >> 8; |
1033 |
p[6] = (s->qdev.conf.cyls >> 8) & 0xff; |
1034 |
p[7] = s->qdev.conf.cyls & 0xff; |
1035 |
/* Write precomp start cylinder, disabled */
|
1036 |
p[8] = (s->qdev.conf.cyls >> 8) & 0xff; |
1037 |
p[9] = s->qdev.conf.cyls & 0xff; |
1038 |
/* Reduced current start cylinder, disabled */
|
1039 |
p[10] = (s->qdev.conf.cyls >> 8) & 0xff; |
1040 |
p[11] = s->qdev.conf.cyls & 0xff; |
1041 |
/* Device step rate [100us], 100us */
|
1042 |
p[12] = 0; |
1043 |
p[13] = 1; |
1044 |
/* Device step pulse width [us], 1us */
|
1045 |
p[14] = 1; |
1046 |
/* Device head settle delay [100us], 100us */
|
1047 |
p[15] = 0; |
1048 |
p[16] = 1; |
1049 |
/* Motor on delay [0.1s], 0.1s */
|
1050 |
p[17] = 1; |
1051 |
/* Motor off delay [0.1s], 0.1s */
|
1052 |
p[18] = 1; |
1053 |
/* Medium rotation rate [rpm], 5400 rpm */
|
1054 |
p[26] = (5400 >> 8) & 0xff; |
1055 |
p[27] = 5400 & 0xff; |
1056 |
break;
|
1057 |
|
1058 |
case MODE_PAGE_CACHING:
|
1059 |
length = 0x12;
|
1060 |
if (page_control == 1 || /* Changeable Values */ |
1061 |
bdrv_enable_write_cache(s->qdev.conf.bs)) { |
1062 |
p[0] = 4; /* WCE */ |
1063 |
} |
1064 |
break;
|
1065 |
|
1066 |
case MODE_PAGE_R_W_ERROR:
|
1067 |
length = 10;
|
1068 |
if (page_control == 1) { /* Changeable Values */ |
1069 |
break;
|
1070 |
} |
1071 |
p[0] = 0x80; /* Automatic Write Reallocation Enabled */ |
1072 |
if (s->qdev.type == TYPE_ROM) {
|
1073 |
p[1] = 0x20; /* Read Retry Count */ |
1074 |
} |
1075 |
break;
|
1076 |
|
1077 |
case MODE_PAGE_AUDIO_CTL:
|
1078 |
length = 14;
|
1079 |
break;
|
1080 |
|
1081 |
case MODE_PAGE_CAPABILITIES:
|
1082 |
length = 0x14;
|
1083 |
if (page_control == 1) { /* Changeable Values */ |
1084 |
break;
|
1085 |
} |
1086 |
|
1087 |
p[0] = 0x3b; /* CD-R & CD-RW read */ |
1088 |
p[1] = 0; /* Writing not supported */ |
1089 |
p[2] = 0x7f; /* Audio, composite, digital out, |
1090 |
mode 2 form 1&2, multi session */
|
1091 |
p[3] = 0xff; /* CD DA, DA accurate, RW supported, |
1092 |
RW corrected, C2 errors, ISRC,
|
1093 |
UPC, Bar code */
|
1094 |
p[4] = 0x2d | (s->tray_locked ? 2 : 0); |
1095 |
/* Locking supported, jumper present, eject, tray */
|
1096 |
p[5] = 0; /* no volume & mute control, no |
1097 |
changer */
|
1098 |
p[6] = (50 * 176) >> 8; /* 50x read speed */ |
1099 |
p[7] = (50 * 176) & 0xff; |
1100 |
p[8] = 2 >> 8; /* Two volume levels */ |
1101 |
p[9] = 2 & 0xff; |
1102 |
p[10] = 2048 >> 8; /* 2M buffer */ |
1103 |
p[11] = 2048 & 0xff; |
1104 |
p[12] = (16 * 176) >> 8; /* 16x read speed current */ |
1105 |
p[13] = (16 * 176) & 0xff; |
1106 |
p[16] = (16 * 176) >> 8; /* 16x write speed */ |
1107 |
p[17] = (16 * 176) & 0xff; |
1108 |
p[18] = (16 * 176) >> 8; /* 16x write speed current */ |
1109 |
p[19] = (16 * 176) & 0xff; |
1110 |
break;
|
1111 |
|
1112 |
default:
|
1113 |
return -1; |
1114 |
} |
1115 |
|
1116 |
assert(length < 256);
|
1117 |
(*p_outbuf)[0] = page;
|
1118 |
(*p_outbuf)[1] = length;
|
1119 |
*p_outbuf += length + 2;
|
1120 |
return length + 2; |
1121 |
} |
1122 |
|
1123 |
static int scsi_disk_emulate_mode_sense(SCSIDiskReq *r, uint8_t *outbuf) |
1124 |
{ |
1125 |
SCSIDiskState *s = DO_UPCAST(SCSIDiskState, qdev, r->req.dev); |
1126 |
uint64_t nb_sectors; |
1127 |
bool dbd;
|
1128 |
int page, buflen, ret, page_control;
|
1129 |
uint8_t *p; |
1130 |
uint8_t dev_specific_param; |
1131 |
|
1132 |
dbd = (r->req.cmd.buf[1] & 0x8) != 0; |
1133 |
page = r->req.cmd.buf[2] & 0x3f; |
1134 |
page_control = (r->req.cmd.buf[2] & 0xc0) >> 6; |
1135 |
DPRINTF("Mode Sense(%d) (page %d, xfer %zd, page_control %d)\n",
|
1136 |
(r->req.cmd.buf[0] == MODE_SENSE) ? 6 : 10, page, r->req.cmd.xfer, page_control); |
1137 |
memset(outbuf, 0, r->req.cmd.xfer);
|
1138 |
p = outbuf; |
1139 |
|
1140 |
if (s->qdev.type == TYPE_DISK) {
|
1141 |
dev_specific_param = s->features & (1 << SCSI_DISK_F_DPOFUA) ? 0x10 : 0; |
1142 |
if (bdrv_is_read_only(s->qdev.conf.bs)) {
|
1143 |
dev_specific_param |= 0x80; /* Readonly. */ |
1144 |
} |
1145 |
} else {
|
1146 |
/* MMC prescribes that CD/DVD drives have no block descriptors,
|
1147 |
* and defines no device-specific parameter. */
|
1148 |
dev_specific_param = 0x00;
|
1149 |
dbd = true;
|
1150 |
} |
1151 |
|
1152 |
if (r->req.cmd.buf[0] == MODE_SENSE) { |
1153 |
p[1] = 0; /* Default media type. */ |
1154 |
p[2] = dev_specific_param;
|
1155 |
p[3] = 0; /* Block descriptor length. */ |
1156 |
p += 4;
|
1157 |
} else { /* MODE_SENSE_10 */ |
1158 |
p[2] = 0; /* Default media type. */ |
1159 |
p[3] = dev_specific_param;
|
1160 |
p[6] = p[7] = 0; /* Block descriptor length. */ |
1161 |
p += 8;
|
1162 |
} |
1163 |
|
1164 |
bdrv_get_geometry(s->qdev.conf.bs, &nb_sectors); |
1165 |
if (!dbd && nb_sectors) {
|
1166 |
if (r->req.cmd.buf[0] == MODE_SENSE) { |
1167 |
outbuf[3] = 8; /* Block descriptor length */ |
1168 |
} else { /* MODE_SENSE_10 */ |
1169 |
outbuf[7] = 8; /* Block descriptor length */ |
1170 |
} |
1171 |
nb_sectors /= (s->qdev.blocksize / 512);
|
1172 |
if (nb_sectors > 0xffffff) { |
1173 |
nb_sectors = 0;
|
1174 |
} |
1175 |
p[0] = 0; /* media density code */ |
1176 |
p[1] = (nb_sectors >> 16) & 0xff; |
1177 |
p[2] = (nb_sectors >> 8) & 0xff; |
1178 |
p[3] = nb_sectors & 0xff; |
1179 |
p[4] = 0; /* reserved */ |
1180 |
p[5] = 0; /* bytes 5-7 are the sector size in bytes */ |
1181 |
p[6] = s->qdev.blocksize >> 8; |
1182 |
p[7] = 0; |
1183 |
p += 8;
|
1184 |
} |
1185 |
|
1186 |
if (page_control == 3) { |
1187 |
/* Saved Values */
|
1188 |
scsi_check_condition(r, SENSE_CODE(SAVING_PARAMS_NOT_SUPPORTED)); |
1189 |
return -1; |
1190 |
} |
1191 |
|
1192 |
if (page == 0x3f) { |
1193 |
for (page = 0; page <= 0x3e; page++) { |
1194 |
mode_sense_page(s, page, &p, page_control); |
1195 |
} |
1196 |
} else {
|
1197 |
ret = mode_sense_page(s, page, &p, page_control); |
1198 |
if (ret == -1) { |
1199 |
return -1; |
1200 |
} |
1201 |
} |
1202 |
|
1203 |
buflen = p - outbuf; |
1204 |
/*
|
1205 |
* The mode data length field specifies the length in bytes of the
|
1206 |
* following data that is available to be transferred. The mode data
|
1207 |
* length does not include itself.
|
1208 |
*/
|
1209 |
if (r->req.cmd.buf[0] == MODE_SENSE) { |
1210 |
outbuf[0] = buflen - 1; |
1211 |
} else { /* MODE_SENSE_10 */ |
1212 |
outbuf[0] = ((buflen - 2) >> 8) & 0xff; |
1213 |
outbuf[1] = (buflen - 2) & 0xff; |
1214 |
} |
1215 |
return buflen;
|
1216 |
} |
1217 |
|
1218 |
static int scsi_disk_emulate_read_toc(SCSIRequest *req, uint8_t *outbuf) |
1219 |
{ |
1220 |
SCSIDiskState *s = DO_UPCAST(SCSIDiskState, qdev, req->dev); |
1221 |
int start_track, format, msf, toclen;
|
1222 |
uint64_t nb_sectors; |
1223 |
|
1224 |
msf = req->cmd.buf[1] & 2; |
1225 |
format = req->cmd.buf[2] & 0xf; |
1226 |
start_track = req->cmd.buf[6];
|
1227 |
bdrv_get_geometry(s->qdev.conf.bs, &nb_sectors); |
1228 |
DPRINTF("Read TOC (track %d format %d msf %d)\n", start_track, format, msf >> 1); |
1229 |
nb_sectors /= s->qdev.blocksize / 512;
|
1230 |
switch (format) {
|
1231 |
case 0: |
1232 |
toclen = cdrom_read_toc(nb_sectors, outbuf, msf, start_track); |
1233 |
break;
|
1234 |
case 1: |
1235 |
/* multi session : only a single session defined */
|
1236 |
toclen = 12;
|
1237 |
memset(outbuf, 0, 12); |
1238 |
outbuf[1] = 0x0a; |
1239 |
outbuf[2] = 0x01; |
1240 |
outbuf[3] = 0x01; |
1241 |
break;
|
1242 |
case 2: |
1243 |
toclen = cdrom_read_toc_raw(nb_sectors, outbuf, msf, start_track); |
1244 |
break;
|
1245 |
default:
|
1246 |
return -1; |
1247 |
} |
1248 |
return toclen;
|
1249 |
} |
1250 |
|
1251 |
static int scsi_disk_emulate_start_stop(SCSIDiskReq *r) |
1252 |
{ |
1253 |
SCSIRequest *req = &r->req; |
1254 |
SCSIDiskState *s = DO_UPCAST(SCSIDiskState, qdev, req->dev); |
1255 |
bool start = req->cmd.buf[4] & 1; |
1256 |
bool loej = req->cmd.buf[4] & 2; /* load on start, eject on !start */ |
1257 |
int pwrcnd = req->cmd.buf[4] & 0xf0; |
1258 |
|
1259 |
if (pwrcnd) {
|
1260 |
/* eject/load only happens for power condition == 0 */
|
1261 |
return 0; |
1262 |
} |
1263 |
|
1264 |
if ((s->features & (1 << SCSI_DISK_F_REMOVABLE)) && loej) { |
1265 |
if (!start && !s->tray_open && s->tray_locked) {
|
1266 |
scsi_check_condition(r, |
1267 |
bdrv_is_inserted(s->qdev.conf.bs) |
1268 |
? SENSE_CODE(ILLEGAL_REQ_REMOVAL_PREVENTED) |
1269 |
: SENSE_CODE(NOT_READY_REMOVAL_PREVENTED)); |
1270 |
return -1; |
1271 |
} |
1272 |
|
1273 |
if (s->tray_open != !start) {
|
1274 |
bdrv_eject(s->qdev.conf.bs, !start); |
1275 |
s->tray_open = !start; |
1276 |
} |
1277 |
} |
1278 |
return 0; |
1279 |
} |
1280 |
|
1281 |
static void scsi_disk_emulate_read_data(SCSIRequest *req) |
1282 |
{ |
1283 |
SCSIDiskReq *r = DO_UPCAST(SCSIDiskReq, req, req); |
1284 |
int buflen = r->iov.iov_len;
|
1285 |
|
1286 |
if (buflen) {
|
1287 |
DPRINTF("Read buf_len=%d\n", buflen);
|
1288 |
r->iov.iov_len = 0;
|
1289 |
r->started = true;
|
1290 |
scsi_req_data(&r->req, buflen); |
1291 |
return;
|
1292 |
} |
1293 |
|
1294 |
/* This also clears the sense buffer for REQUEST SENSE. */
|
1295 |
scsi_req_complete(&r->req, GOOD); |
1296 |
} |
1297 |
|
1298 |
static int scsi_disk_check_mode_select(SCSIDiskState *s, int page, |
1299 |
uint8_t *inbuf, int inlen)
|
1300 |
{ |
1301 |
uint8_t mode_current[SCSI_MAX_MODE_LEN]; |
1302 |
uint8_t mode_changeable[SCSI_MAX_MODE_LEN]; |
1303 |
uint8_t *p; |
1304 |
int len, expected_len, changeable_len, i;
|
1305 |
|
1306 |
/* The input buffer does not include the page header, so it is
|
1307 |
* off by 2 bytes.
|
1308 |
*/
|
1309 |
expected_len = inlen + 2;
|
1310 |
if (expected_len > SCSI_MAX_MODE_LEN) {
|
1311 |
return -1; |
1312 |
} |
1313 |
|
1314 |
p = mode_current; |
1315 |
memset(mode_current, 0, inlen + 2); |
1316 |
len = mode_sense_page(s, page, &p, 0);
|
1317 |
if (len < 0 || len != expected_len) { |
1318 |
return -1; |
1319 |
} |
1320 |
|
1321 |
p = mode_changeable; |
1322 |
memset(mode_changeable, 0, inlen + 2); |
1323 |
changeable_len = mode_sense_page(s, page, &p, 1);
|
1324 |
assert(changeable_len == len); |
1325 |
|
1326 |
/* Check that unchangeable bits are the same as what MODE SENSE
|
1327 |
* would return.
|
1328 |
*/
|
1329 |
for (i = 2; i < len; i++) { |
1330 |
if (((mode_current[i] ^ inbuf[i - 2]) & ~mode_changeable[i]) != 0) { |
1331 |
return -1; |
1332 |
} |
1333 |
} |
1334 |
return 0; |
1335 |
} |
1336 |
|
1337 |
static void scsi_disk_apply_mode_select(SCSIDiskState *s, int page, uint8_t *p) |
1338 |
{ |
1339 |
switch (page) {
|
1340 |
case MODE_PAGE_CACHING:
|
1341 |
bdrv_set_enable_write_cache(s->qdev.conf.bs, (p[0] & 4) != 0); |
1342 |
break;
|
1343 |
|
1344 |
default:
|
1345 |
break;
|
1346 |
} |
1347 |
} |
1348 |
|
1349 |
static int mode_select_pages(SCSIDiskReq *r, uint8_t *p, int len, bool change) |
1350 |
{ |
1351 |
SCSIDiskState *s = DO_UPCAST(SCSIDiskState, qdev, r->req.dev); |
1352 |
|
1353 |
while (len > 0) { |
1354 |
int page, subpage, page_len;
|
1355 |
|
1356 |
/* Parse both possible formats for the mode page headers. */
|
1357 |
page = p[0] & 0x3f; |
1358 |
if (p[0] & 0x40) { |
1359 |
if (len < 4) { |
1360 |
goto invalid_param_len;
|
1361 |
} |
1362 |
subpage = p[1];
|
1363 |
page_len = lduw_be_p(&p[2]);
|
1364 |
p += 4;
|
1365 |
len -= 4;
|
1366 |
} else {
|
1367 |
if (len < 2) { |
1368 |
goto invalid_param_len;
|
1369 |
} |
1370 |
subpage = 0;
|
1371 |
page_len = p[1];
|
1372 |
p += 2;
|
1373 |
len -= 2;
|
1374 |
} |
1375 |
|
1376 |
if (subpage) {
|
1377 |
goto invalid_param;
|
1378 |
} |
1379 |
if (page_len > len) {
|
1380 |
goto invalid_param_len;
|
1381 |
} |
1382 |
|
1383 |
if (!change) {
|
1384 |
if (scsi_disk_check_mode_select(s, page, p, page_len) < 0) { |
1385 |
goto invalid_param;
|
1386 |
} |
1387 |
} else {
|
1388 |
scsi_disk_apply_mode_select(s, page, p); |
1389 |
} |
1390 |
|
1391 |
p += page_len; |
1392 |
len -= page_len; |
1393 |
} |
1394 |
return 0; |
1395 |
|
1396 |
invalid_param:
|
1397 |
scsi_check_condition(r, SENSE_CODE(INVALID_PARAM)); |
1398 |
return -1; |
1399 |
|
1400 |
invalid_param_len:
|
1401 |
scsi_check_condition(r, SENSE_CODE(INVALID_PARAM_LEN)); |
1402 |
return -1; |
1403 |
} |
1404 |
|
1405 |
static void scsi_disk_emulate_mode_select(SCSIDiskReq *r, uint8_t *inbuf) |
1406 |
{ |
1407 |
SCSIDiskState *s = DO_UPCAST(SCSIDiskState, qdev, r->req.dev); |
1408 |
uint8_t *p = inbuf; |
1409 |
int cmd = r->req.cmd.buf[0]; |
1410 |
int len = r->req.cmd.xfer;
|
1411 |
int hdr_len = (cmd == MODE_SELECT ? 4 : 8); |
1412 |
int bd_len;
|
1413 |
int pass;
|
1414 |
|
1415 |
/* We only support PF=1, SP=0. */
|
1416 |
if ((r->req.cmd.buf[1] & 0x11) != 0x10) { |
1417 |
goto invalid_field;
|
1418 |
} |
1419 |
|
1420 |
if (len < hdr_len) {
|
1421 |
goto invalid_param_len;
|
1422 |
} |
1423 |
|
1424 |
bd_len = (cmd == MODE_SELECT ? p[3] : lduw_be_p(&p[6])); |
1425 |
len -= hdr_len; |
1426 |
p += hdr_len; |
1427 |
if (len < bd_len) {
|
1428 |
goto invalid_param_len;
|
1429 |
} |
1430 |
if (bd_len != 0 && bd_len != 8) { |
1431 |
goto invalid_param;
|
1432 |
} |
1433 |
|
1434 |
len -= bd_len; |
1435 |
p += bd_len; |
1436 |
|
1437 |
/* Ensure no change is made if there is an error! */
|
1438 |
for (pass = 0; pass < 2; pass++) { |
1439 |
if (mode_select_pages(r, p, len, pass == 1) < 0) { |
1440 |
assert(pass == 0);
|
1441 |
return;
|
1442 |
} |
1443 |
} |
1444 |
if (!bdrv_enable_write_cache(s->qdev.conf.bs)) {
|
1445 |
/* The request is used as the AIO opaque value, so add a ref. */
|
1446 |
scsi_req_ref(&r->req); |
1447 |
bdrv_acct_start(s->qdev.conf.bs, &r->acct, 0, BDRV_ACCT_FLUSH);
|
1448 |
r->req.aiocb = bdrv_aio_flush(s->qdev.conf.bs, scsi_aio_complete, r); |
1449 |
return;
|
1450 |
} |
1451 |
|
1452 |
scsi_req_complete(&r->req, GOOD); |
1453 |
return;
|
1454 |
|
1455 |
invalid_param:
|
1456 |
scsi_check_condition(r, SENSE_CODE(INVALID_PARAM)); |
1457 |
return;
|
1458 |
|
1459 |
invalid_param_len:
|
1460 |
scsi_check_condition(r, SENSE_CODE(INVALID_PARAM_LEN)); |
1461 |
return;
|
1462 |
|
1463 |
invalid_field:
|
1464 |
scsi_check_condition(r, SENSE_CODE(INVALID_FIELD)); |
1465 |
} |
1466 |
|
1467 |
static inline bool check_lba_range(SCSIDiskState *s, |
1468 |
uint64_t sector_num, uint32_t nb_sectors) |
1469 |
{ |
1470 |
/*
|
1471 |
* The first line tests that no overflow happens when computing the last
|
1472 |
* sector. The second line tests that the last accessed sector is in
|
1473 |
* range.
|
1474 |
*
|
1475 |
* Careful, the computations should not underflow for nb_sectors == 0,
|
1476 |
* and a 0-block read to the first LBA beyond the end of device is
|
1477 |
* valid.
|
1478 |
*/
|
1479 |
return (sector_num <= sector_num + nb_sectors &&
|
1480 |
sector_num + nb_sectors <= s->qdev.max_lba + 1);
|
1481 |
} |
1482 |
|
1483 |
typedef struct UnmapCBData { |
1484 |
SCSIDiskReq *r; |
1485 |
uint8_t *inbuf; |
1486 |
int count;
|
1487 |
} UnmapCBData; |
1488 |
|
1489 |
static void scsi_unmap_complete(void *opaque, int ret) |
1490 |
{ |
1491 |
UnmapCBData *data = opaque; |
1492 |
SCSIDiskReq *r = data->r; |
1493 |
SCSIDiskState *s = DO_UPCAST(SCSIDiskState, qdev, r->req.dev); |
1494 |
uint64_t sector_num; |
1495 |
uint32_t nb_sectors; |
1496 |
|
1497 |
r->req.aiocb = NULL;
|
1498 |
if (r->req.io_canceled) {
|
1499 |
goto done;
|
1500 |
} |
1501 |
|
1502 |
if (ret < 0) { |
1503 |
if (scsi_handle_rw_error(r, -ret)) {
|
1504 |
goto done;
|
1505 |
} |
1506 |
} |
1507 |
|
1508 |
if (data->count > 0) { |
1509 |
sector_num = ldq_be_p(&data->inbuf[0]);
|
1510 |
nb_sectors = ldl_be_p(&data->inbuf[8]) & 0xffffffffULL; |
1511 |
if (!check_lba_range(s, sector_num, nb_sectors)) {
|
1512 |
scsi_check_condition(r, SENSE_CODE(LBA_OUT_OF_RANGE)); |
1513 |
goto done;
|
1514 |
} |
1515 |
|
1516 |
r->req.aiocb = bdrv_aio_discard(s->qdev.conf.bs, |
1517 |
sector_num * (s->qdev.blocksize / 512),
|
1518 |
nb_sectors * (s->qdev.blocksize / 512),
|
1519 |
scsi_unmap_complete, data); |
1520 |
data->count--; |
1521 |
data->inbuf += 16;
|
1522 |
return;
|
1523 |
} |
1524 |
|
1525 |
scsi_req_complete(&r->req, GOOD); |
1526 |
|
1527 |
done:
|
1528 |
if (!r->req.io_canceled) {
|
1529 |
scsi_req_unref(&r->req); |
1530 |
} |
1531 |
g_free(data); |
1532 |
} |
1533 |
|
1534 |
static void scsi_disk_emulate_unmap(SCSIDiskReq *r, uint8_t *inbuf) |
1535 |
{ |
1536 |
uint8_t *p = inbuf; |
1537 |
int len = r->req.cmd.xfer;
|
1538 |
UnmapCBData *data; |
1539 |
|
1540 |
if (len < 8) { |
1541 |
goto invalid_param_len;
|
1542 |
} |
1543 |
if (len < lduw_be_p(&p[0]) + 2) { |
1544 |
goto invalid_param_len;
|
1545 |
} |
1546 |
if (len < lduw_be_p(&p[2]) + 8) { |
1547 |
goto invalid_param_len;
|
1548 |
} |
1549 |
if (lduw_be_p(&p[2]) & 15) { |
1550 |
goto invalid_param_len;
|
1551 |
} |
1552 |
|
1553 |
data = g_new0(UnmapCBData, 1);
|
1554 |
data->r = r; |
1555 |
data->inbuf = &p[8];
|
1556 |
data->count = lduw_be_p(&p[2]) >> 4; |
1557 |
|
1558 |
/* The matching unref is in scsi_unmap_complete, before data is freed. */
|
1559 |
scsi_req_ref(&r->req); |
1560 |
scsi_unmap_complete(data, 0);
|
1561 |
return;
|
1562 |
|
1563 |
invalid_param_len:
|
1564 |
scsi_check_condition(r, SENSE_CODE(INVALID_PARAM_LEN)); |
1565 |
} |
1566 |
|
1567 |
static void scsi_disk_emulate_write_data(SCSIRequest *req) |
1568 |
{ |
1569 |
SCSIDiskReq *r = DO_UPCAST(SCSIDiskReq, req, req); |
1570 |
|
1571 |
if (r->iov.iov_len) {
|
1572 |
int buflen = r->iov.iov_len;
|
1573 |
DPRINTF("Write buf_len=%d\n", buflen);
|
1574 |
r->iov.iov_len = 0;
|
1575 |
scsi_req_data(&r->req, buflen); |
1576 |
return;
|
1577 |
} |
1578 |
|
1579 |
switch (req->cmd.buf[0]) { |
1580 |
case MODE_SELECT:
|
1581 |
case MODE_SELECT_10:
|
1582 |
/* This also clears the sense buffer for REQUEST SENSE. */
|
1583 |
scsi_disk_emulate_mode_select(r, r->iov.iov_base); |
1584 |
break;
|
1585 |
|
1586 |
case UNMAP:
|
1587 |
scsi_disk_emulate_unmap(r, r->iov.iov_base); |
1588 |
break;
|
1589 |
|
1590 |
default:
|
1591 |
abort(); |
1592 |
} |
1593 |
} |
1594 |
|
1595 |
static int32_t scsi_disk_emulate_command(SCSIRequest *req, uint8_t *buf)
|
1596 |
{ |
1597 |
SCSIDiskReq *r = DO_UPCAST(SCSIDiskReq, req, req); |
1598 |
SCSIDiskState *s = DO_UPCAST(SCSIDiskState, qdev, req->dev); |
1599 |
uint64_t nb_sectors; |
1600 |
uint8_t *outbuf; |
1601 |
int buflen;
|
1602 |
|
1603 |
switch (req->cmd.buf[0]) { |
1604 |
case INQUIRY:
|
1605 |
case MODE_SENSE:
|
1606 |
case MODE_SENSE_10:
|
1607 |
case RESERVE:
|
1608 |
case RESERVE_10:
|
1609 |
case RELEASE:
|
1610 |
case RELEASE_10:
|
1611 |
case START_STOP:
|
1612 |
case ALLOW_MEDIUM_REMOVAL:
|
1613 |
case GET_CONFIGURATION:
|
1614 |
case GET_EVENT_STATUS_NOTIFICATION:
|
1615 |
case MECHANISM_STATUS:
|
1616 |
case REQUEST_SENSE:
|
1617 |
break;
|
1618 |
|
1619 |
default:
|
1620 |
if (s->tray_open || !bdrv_is_inserted(s->qdev.conf.bs)) {
|
1621 |
scsi_check_condition(r, SENSE_CODE(NO_MEDIUM)); |
1622 |
return 0; |
1623 |
} |
1624 |
break;
|
1625 |
} |
1626 |
|
1627 |
/*
|
1628 |
* FIXME: we shouldn't return anything bigger than 4k, but the code
|
1629 |
* requires the buffer to be as big as req->cmd.xfer in several
|
1630 |
* places. So, do not allow CDBs with a very large ALLOCATION
|
1631 |
* LENGTH. The real fix would be to modify scsi_read_data and
|
1632 |
* dma_buf_read, so that they return data beyond the buflen
|
1633 |
* as all zeros.
|
1634 |
*/
|
1635 |
if (req->cmd.xfer > 65536) { |
1636 |
goto illegal_request;
|
1637 |
} |
1638 |
r->buflen = MAX(4096, req->cmd.xfer);
|
1639 |
|
1640 |
if (!r->iov.iov_base) {
|
1641 |
r->iov.iov_base = qemu_blockalign(s->qdev.conf.bs, r->buflen); |
1642 |
} |
1643 |
|
1644 |
buflen = req->cmd.xfer; |
1645 |
outbuf = r->iov.iov_base; |
1646 |
memset(outbuf, 0, r->buflen);
|
1647 |
switch (req->cmd.buf[0]) { |
1648 |
case TEST_UNIT_READY:
|
1649 |
assert(!s->tray_open && bdrv_is_inserted(s->qdev.conf.bs)); |
1650 |
break;
|
1651 |
case INQUIRY:
|
1652 |
buflen = scsi_disk_emulate_inquiry(req, outbuf); |
1653 |
if (buflen < 0) { |
1654 |
goto illegal_request;
|
1655 |
} |
1656 |
break;
|
1657 |
case MODE_SENSE:
|
1658 |
case MODE_SENSE_10:
|
1659 |
buflen = scsi_disk_emulate_mode_sense(r, outbuf); |
1660 |
if (buflen < 0) { |
1661 |
goto illegal_request;
|
1662 |
} |
1663 |
break;
|
1664 |
case READ_TOC:
|
1665 |
buflen = scsi_disk_emulate_read_toc(req, outbuf); |
1666 |
if (buflen < 0) { |
1667 |
goto illegal_request;
|
1668 |
} |
1669 |
break;
|
1670 |
case RESERVE:
|
1671 |
if (req->cmd.buf[1] & 1) { |
1672 |
goto illegal_request;
|
1673 |
} |
1674 |
break;
|
1675 |
case RESERVE_10:
|
1676 |
if (req->cmd.buf[1] & 3) { |
1677 |
goto illegal_request;
|
1678 |
} |
1679 |
break;
|
1680 |
case RELEASE:
|
1681 |
if (req->cmd.buf[1] & 1) { |
1682 |
goto illegal_request;
|
1683 |
} |
1684 |
break;
|
1685 |
case RELEASE_10:
|
1686 |
if (req->cmd.buf[1] & 3) { |
1687 |
goto illegal_request;
|
1688 |
} |
1689 |
break;
|
1690 |
case START_STOP:
|
1691 |
if (scsi_disk_emulate_start_stop(r) < 0) { |
1692 |
return 0; |
1693 |
} |
1694 |
break;
|
1695 |
case ALLOW_MEDIUM_REMOVAL:
|
1696 |
s->tray_locked = req->cmd.buf[4] & 1; |
1697 |
bdrv_lock_medium(s->qdev.conf.bs, req->cmd.buf[4] & 1); |
1698 |
break;
|
1699 |
case READ_CAPACITY_10:
|
1700 |
/* The normal LEN field for this command is zero. */
|
1701 |
memset(outbuf, 0, 8); |
1702 |
bdrv_get_geometry(s->qdev.conf.bs, &nb_sectors); |
1703 |
if (!nb_sectors) {
|
1704 |
scsi_check_condition(r, SENSE_CODE(LUN_NOT_READY)); |
1705 |
return 0; |
1706 |
} |
1707 |
if ((req->cmd.buf[8] & 1) == 0 && req->cmd.lba) { |
1708 |
goto illegal_request;
|
1709 |
} |
1710 |
nb_sectors /= s->qdev.blocksize / 512;
|
1711 |
/* Returned value is the address of the last sector. */
|
1712 |
nb_sectors--; |
1713 |
/* Remember the new size for read/write sanity checking. */
|
1714 |
s->qdev.max_lba = nb_sectors; |
1715 |
/* Clip to 2TB, instead of returning capacity modulo 2TB. */
|
1716 |
if (nb_sectors > UINT32_MAX) {
|
1717 |
nb_sectors = UINT32_MAX; |
1718 |
} |
1719 |
outbuf[0] = (nb_sectors >> 24) & 0xff; |
1720 |
outbuf[1] = (nb_sectors >> 16) & 0xff; |
1721 |
outbuf[2] = (nb_sectors >> 8) & 0xff; |
1722 |
outbuf[3] = nb_sectors & 0xff; |
1723 |
outbuf[4] = 0; |
1724 |
outbuf[5] = 0; |
1725 |
outbuf[6] = s->qdev.blocksize >> 8; |
1726 |
outbuf[7] = 0; |
1727 |
break;
|
1728 |
case REQUEST_SENSE:
|
1729 |
/* Just return "NO SENSE". */
|
1730 |
buflen = scsi_build_sense(NULL, 0, outbuf, r->buflen, |
1731 |
(req->cmd.buf[1] & 1) == 0); |
1732 |
if (buflen < 0) { |
1733 |
goto illegal_request;
|
1734 |
} |
1735 |
break;
|
1736 |
case MECHANISM_STATUS:
|
1737 |
buflen = scsi_emulate_mechanism_status(s, outbuf); |
1738 |
if (buflen < 0) { |
1739 |
goto illegal_request;
|
1740 |
} |
1741 |
break;
|
1742 |
case GET_CONFIGURATION:
|
1743 |
buflen = scsi_get_configuration(s, outbuf); |
1744 |
if (buflen < 0) { |
1745 |
goto illegal_request;
|
1746 |
} |
1747 |
break;
|
1748 |
case GET_EVENT_STATUS_NOTIFICATION:
|
1749 |
buflen = scsi_get_event_status_notification(s, r, outbuf); |
1750 |
if (buflen < 0) { |
1751 |
goto illegal_request;
|
1752 |
} |
1753 |
break;
|
1754 |
case READ_DISC_INFORMATION:
|
1755 |
buflen = scsi_read_disc_information(s, r, outbuf); |
1756 |
if (buflen < 0) { |
1757 |
goto illegal_request;
|
1758 |
} |
1759 |
break;
|
1760 |
case READ_DVD_STRUCTURE:
|
1761 |
buflen = scsi_read_dvd_structure(s, r, outbuf); |
1762 |
if (buflen < 0) { |
1763 |
goto illegal_request;
|
1764 |
} |
1765 |
break;
|
1766 |
case SERVICE_ACTION_IN_16:
|
1767 |
/* Service Action In subcommands. */
|
1768 |
if ((req->cmd.buf[1] & 31) == SAI_READ_CAPACITY_16) { |
1769 |
DPRINTF("SAI READ CAPACITY(16)\n");
|
1770 |
memset(outbuf, 0, req->cmd.xfer);
|
1771 |
bdrv_get_geometry(s->qdev.conf.bs, &nb_sectors); |
1772 |
if (!nb_sectors) {
|
1773 |
scsi_check_condition(r, SENSE_CODE(LUN_NOT_READY)); |
1774 |
return 0; |
1775 |
} |
1776 |
if ((req->cmd.buf[14] & 1) == 0 && req->cmd.lba) { |
1777 |
goto illegal_request;
|
1778 |
} |
1779 |
nb_sectors /= s->qdev.blocksize / 512;
|
1780 |
/* Returned value is the address of the last sector. */
|
1781 |
nb_sectors--; |
1782 |
/* Remember the new size for read/write sanity checking. */
|
1783 |
s->qdev.max_lba = nb_sectors; |
1784 |
outbuf[0] = (nb_sectors >> 56) & 0xff; |
1785 |
outbuf[1] = (nb_sectors >> 48) & 0xff; |
1786 |
outbuf[2] = (nb_sectors >> 40) & 0xff; |
1787 |
outbuf[3] = (nb_sectors >> 32) & 0xff; |
1788 |
outbuf[4] = (nb_sectors >> 24) & 0xff; |
1789 |
outbuf[5] = (nb_sectors >> 16) & 0xff; |
1790 |
outbuf[6] = (nb_sectors >> 8) & 0xff; |
1791 |
outbuf[7] = nb_sectors & 0xff; |
1792 |
outbuf[8] = 0; |
1793 |
outbuf[9] = 0; |
1794 |
outbuf[10] = s->qdev.blocksize >> 8; |
1795 |
outbuf[11] = 0; |
1796 |
outbuf[12] = 0; |
1797 |
outbuf[13] = get_physical_block_exp(&s->qdev.conf);
|
1798 |
|
1799 |
/* set TPE bit if the format supports discard */
|
1800 |
if (s->qdev.conf.discard_granularity) {
|
1801 |
outbuf[14] = 0x80; |
1802 |
} |
1803 |
|
1804 |
/* Protection, exponent and lowest lba field left blank. */
|
1805 |
break;
|
1806 |
} |
1807 |
DPRINTF("Unsupported Service Action In\n");
|
1808 |
goto illegal_request;
|
1809 |
case SYNCHRONIZE_CACHE:
|
1810 |
/* The request is used as the AIO opaque value, so add a ref. */
|
1811 |
scsi_req_ref(&r->req); |
1812 |
bdrv_acct_start(s->qdev.conf.bs, &r->acct, 0, BDRV_ACCT_FLUSH);
|
1813 |
r->req.aiocb = bdrv_aio_flush(s->qdev.conf.bs, scsi_aio_complete, r); |
1814 |
return 0; |
1815 |
case SEEK_10:
|
1816 |
DPRINTF("Seek(10) (sector %" PRId64 ")\n", r->req.cmd.lba); |
1817 |
if (r->req.cmd.lba > s->qdev.max_lba) {
|
1818 |
goto illegal_lba;
|
1819 |
} |
1820 |
break;
|
1821 |
case MODE_SELECT:
|
1822 |
DPRINTF("Mode Select(6) (len %lu)\n", (long)r->req.cmd.xfer); |
1823 |
break;
|
1824 |
case MODE_SELECT_10:
|
1825 |
DPRINTF("Mode Select(10) (len %lu)\n", (long)r->req.cmd.xfer); |
1826 |
break;
|
1827 |
case UNMAP:
|
1828 |
DPRINTF("Unmap (len %lu)\n", (long)r->req.cmd.xfer); |
1829 |
break;
|
1830 |
case WRITE_SAME_10:
|
1831 |
case WRITE_SAME_16:
|
1832 |
nb_sectors = scsi_data_cdb_length(r->req.cmd.buf); |
1833 |
if (bdrv_is_read_only(s->qdev.conf.bs)) {
|
1834 |
scsi_check_condition(r, SENSE_CODE(WRITE_PROTECTED)); |
1835 |
return 0; |
1836 |
} |
1837 |
if (!check_lba_range(s, r->req.cmd.lba, nb_sectors)) {
|
1838 |
goto illegal_lba;
|
1839 |
} |
1840 |
|
1841 |
/*
|
1842 |
* We only support WRITE SAME with the unmap bit set for now.
|
1843 |
*/
|
1844 |
if (!(req->cmd.buf[1] & 0x8)) { |
1845 |
goto illegal_request;
|
1846 |
} |
1847 |
|
1848 |
/* The request is used as the AIO opaque value, so add a ref. */
|
1849 |
scsi_req_ref(&r->req); |
1850 |
r->req.aiocb = bdrv_aio_discard(s->qdev.conf.bs, |
1851 |
r->req.cmd.lba * (s->qdev.blocksize / 512),
|
1852 |
nb_sectors * (s->qdev.blocksize / 512),
|
1853 |
scsi_aio_complete, r); |
1854 |
return 0; |
1855 |
default:
|
1856 |
DPRINTF("Unknown SCSI command (%2.2x)\n", buf[0]); |
1857 |
scsi_check_condition(r, SENSE_CODE(INVALID_OPCODE)); |
1858 |
return 0; |
1859 |
} |
1860 |
assert(!r->req.aiocb); |
1861 |
r->iov.iov_len = MIN(r->buflen, req->cmd.xfer); |
1862 |
if (r->iov.iov_len == 0) { |
1863 |
scsi_req_complete(&r->req, GOOD); |
1864 |
} |
1865 |
if (r->req.cmd.mode == SCSI_XFER_TO_DEV) {
|
1866 |
assert(r->iov.iov_len == req->cmd.xfer); |
1867 |
return -r->iov.iov_len;
|
1868 |
} else {
|
1869 |
return r->iov.iov_len;
|
1870 |
} |
1871 |
|
1872 |
illegal_request:
|
1873 |
if (r->req.status == -1) { |
1874 |
scsi_check_condition(r, SENSE_CODE(INVALID_FIELD)); |
1875 |
} |
1876 |
return 0; |
1877 |
|
1878 |
illegal_lba:
|
1879 |
scsi_check_condition(r, SENSE_CODE(LBA_OUT_OF_RANGE)); |
1880 |
return 0; |
1881 |
} |
1882 |
|
1883 |
/* Execute a scsi command. Returns the length of the data expected by the
|
1884 |
command. This will be Positive for data transfers from the device
|
1885 |
(eg. disk reads), negative for transfers to the device (eg. disk writes),
|
1886 |
and zero if the command does not transfer any data. */
|
1887 |
|
1888 |
static int32_t scsi_disk_dma_command(SCSIRequest *req, uint8_t *buf)
|
1889 |
{ |
1890 |
SCSIDiskReq *r = DO_UPCAST(SCSIDiskReq, req, req); |
1891 |
SCSIDiskState *s = DO_UPCAST(SCSIDiskState, qdev, req->dev); |
1892 |
uint32_t len; |
1893 |
uint8_t command; |
1894 |
|
1895 |
command = buf[0];
|
1896 |
|
1897 |
if (s->tray_open || !bdrv_is_inserted(s->qdev.conf.bs)) {
|
1898 |
scsi_check_condition(r, SENSE_CODE(NO_MEDIUM)); |
1899 |
return 0; |
1900 |
} |
1901 |
|
1902 |
len = scsi_data_cdb_length(r->req.cmd.buf); |
1903 |
switch (command) {
|
1904 |
case READ_6:
|
1905 |
case READ_10:
|
1906 |
case READ_12:
|
1907 |
case READ_16:
|
1908 |
DPRINTF("Read (sector %" PRId64 ", count %u)\n", r->req.cmd.lba, len); |
1909 |
if (r->req.cmd.buf[1] & 0xe0) { |
1910 |
goto illegal_request;
|
1911 |
} |
1912 |
if (!check_lba_range(s, r->req.cmd.lba, len)) {
|
1913 |
goto illegal_lba;
|
1914 |
} |
1915 |
r->sector = r->req.cmd.lba * (s->qdev.blocksize / 512);
|
1916 |
r->sector_count = len * (s->qdev.blocksize / 512);
|
1917 |
break;
|
1918 |
case WRITE_6:
|
1919 |
case WRITE_10:
|
1920 |
case WRITE_12:
|
1921 |
case WRITE_16:
|
1922 |
case WRITE_VERIFY_10:
|
1923 |
case WRITE_VERIFY_12:
|
1924 |
case WRITE_VERIFY_16:
|
1925 |
if (bdrv_is_read_only(s->qdev.conf.bs)) {
|
1926 |
scsi_check_condition(r, SENSE_CODE(WRITE_PROTECTED)); |
1927 |
return 0; |
1928 |
} |
1929 |
/* fallthrough */
|
1930 |
case VERIFY_10:
|
1931 |
case VERIFY_12:
|
1932 |
case VERIFY_16:
|
1933 |
DPRINTF("Write %s(sector %" PRId64 ", count %u)\n", |
1934 |
(command & 0xe) == 0xe ? "And Verify " : "", |
1935 |
r->req.cmd.lba, len); |
1936 |
if (r->req.cmd.buf[1] & 0xe0) { |
1937 |
goto illegal_request;
|
1938 |
} |
1939 |
if (!check_lba_range(s, r->req.cmd.lba, len)) {
|
1940 |
goto illegal_lba;
|
1941 |
} |
1942 |
r->sector = r->req.cmd.lba * (s->qdev.blocksize / 512);
|
1943 |
r->sector_count = len * (s->qdev.blocksize / 512);
|
1944 |
break;
|
1945 |
default:
|
1946 |
abort(); |
1947 |
illegal_request:
|
1948 |
scsi_check_condition(r, SENSE_CODE(INVALID_FIELD)); |
1949 |
return 0; |
1950 |
illegal_lba:
|
1951 |
scsi_check_condition(r, SENSE_CODE(LBA_OUT_OF_RANGE)); |
1952 |
return 0; |
1953 |
} |
1954 |
if (r->sector_count == 0) { |
1955 |
scsi_req_complete(&r->req, GOOD); |
1956 |
} |
1957 |
assert(r->iov.iov_len == 0);
|
1958 |
if (r->req.cmd.mode == SCSI_XFER_TO_DEV) {
|
1959 |
return -r->sector_count * 512; |
1960 |
} else {
|
1961 |
return r->sector_count * 512; |
1962 |
} |
1963 |
} |
1964 |
|
1965 |
static void scsi_disk_reset(DeviceState *dev) |
1966 |
{ |
1967 |
SCSIDiskState *s = DO_UPCAST(SCSIDiskState, qdev.qdev, dev); |
1968 |
uint64_t nb_sectors; |
1969 |
|
1970 |
scsi_device_purge_requests(&s->qdev, SENSE_CODE(RESET)); |
1971 |
|
1972 |
bdrv_get_geometry(s->qdev.conf.bs, &nb_sectors); |
1973 |
nb_sectors /= s->qdev.blocksize / 512;
|
1974 |
if (nb_sectors) {
|
1975 |
nb_sectors--; |
1976 |
} |
1977 |
s->qdev.max_lba = nb_sectors; |
1978 |
} |
1979 |
|
1980 |
static void scsi_destroy(SCSIDevice *dev) |
1981 |
{ |
1982 |
SCSIDiskState *s = DO_UPCAST(SCSIDiskState, qdev, dev); |
1983 |
|
1984 |
scsi_device_purge_requests(&s->qdev, SENSE_CODE(NO_SENSE)); |
1985 |
blockdev_mark_auto_del(s->qdev.conf.bs); |
1986 |
} |
1987 |
|
1988 |
static void scsi_disk_resize_cb(void *opaque) |
1989 |
{ |
1990 |
SCSIDiskState *s = opaque; |
1991 |
|
1992 |
/* SPC lists this sense code as available only for
|
1993 |
* direct-access devices.
|
1994 |
*/
|
1995 |
if (s->qdev.type == TYPE_DISK) {
|
1996 |
scsi_device_report_change(&s->qdev, SENSE_CODE(CAPACITY_CHANGED)); |
1997 |
} |
1998 |
} |
1999 |
|
2000 |
static void scsi_cd_change_media_cb(void *opaque, bool load) |
2001 |
{ |
2002 |
SCSIDiskState *s = opaque; |
2003 |
|
2004 |
/*
|
2005 |
* When a CD gets changed, we have to report an ejected state and
|
2006 |
* then a loaded state to guests so that they detect tray
|
2007 |
* open/close and media change events. Guests that do not use
|
2008 |
* GET_EVENT_STATUS_NOTIFICATION to detect such tray open/close
|
2009 |
* states rely on this behavior.
|
2010 |
*
|
2011 |
* media_changed governs the state machine used for unit attention
|
2012 |
* report. media_event is used by GET EVENT STATUS NOTIFICATION.
|
2013 |
*/
|
2014 |
s->media_changed = load; |
2015 |
s->tray_open = !load; |
2016 |
scsi_device_set_ua(&s->qdev, SENSE_CODE(UNIT_ATTENTION_NO_MEDIUM)); |
2017 |
s->media_event = true;
|
2018 |
s->eject_request = false;
|
2019 |
} |
2020 |
|
2021 |
static void scsi_cd_eject_request_cb(void *opaque, bool force) |
2022 |
{ |
2023 |
SCSIDiskState *s = opaque; |
2024 |
|
2025 |
s->eject_request = true;
|
2026 |
if (force) {
|
2027 |
s->tray_locked = false;
|
2028 |
} |
2029 |
} |
2030 |
|
2031 |
static bool scsi_cd_is_tray_open(void *opaque) |
2032 |
{ |
2033 |
return ((SCSIDiskState *)opaque)->tray_open;
|
2034 |
} |
2035 |
|
2036 |
static bool scsi_cd_is_medium_locked(void *opaque) |
2037 |
{ |
2038 |
return ((SCSIDiskState *)opaque)->tray_locked;
|
2039 |
} |
2040 |
|
2041 |
static const BlockDevOps scsi_disk_removable_block_ops = { |
2042 |
.change_media_cb = scsi_cd_change_media_cb, |
2043 |
.eject_request_cb = scsi_cd_eject_request_cb, |
2044 |
.is_tray_open = scsi_cd_is_tray_open, |
2045 |
.is_medium_locked = scsi_cd_is_medium_locked, |
2046 |
|
2047 |
.resize_cb = scsi_disk_resize_cb, |
2048 |
}; |
2049 |
|
2050 |
static const BlockDevOps scsi_disk_block_ops = { |
2051 |
.resize_cb = scsi_disk_resize_cb, |
2052 |
}; |
2053 |
|
2054 |
static void scsi_disk_unit_attention_reported(SCSIDevice *dev) |
2055 |
{ |
2056 |
SCSIDiskState *s = DO_UPCAST(SCSIDiskState, qdev, dev); |
2057 |
if (s->media_changed) {
|
2058 |
s->media_changed = false;
|
2059 |
scsi_device_set_ua(&s->qdev, SENSE_CODE(MEDIUM_CHANGED)); |
2060 |
} |
2061 |
} |
2062 |
|
2063 |
static int scsi_initfn(SCSIDevice *dev) |
2064 |
{ |
2065 |
SCSIDiskState *s = DO_UPCAST(SCSIDiskState, qdev, dev); |
2066 |
|
2067 |
if (!s->qdev.conf.bs) {
|
2068 |
error_report("drive property not set");
|
2069 |
return -1; |
2070 |
} |
2071 |
|
2072 |
if (!(s->features & (1 << SCSI_DISK_F_REMOVABLE)) && |
2073 |
!bdrv_is_inserted(s->qdev.conf.bs)) { |
2074 |
error_report("Device needs media, but drive is empty");
|
2075 |
return -1; |
2076 |
} |
2077 |
|
2078 |
blkconf_serial(&s->qdev.conf, &s->serial); |
2079 |
if (dev->type == TYPE_DISK
|
2080 |
&& blkconf_geometry(&dev->conf, NULL, 65535, 255, 255) < 0) { |
2081 |
return -1; |
2082 |
} |
2083 |
|
2084 |
if (s->qdev.conf.discard_granularity == -1) { |
2085 |
s->qdev.conf.discard_granularity = |
2086 |
MAX(s->qdev.conf.logical_block_size, DEFAULT_DISCARD_GRANULARITY); |
2087 |
} |
2088 |
|
2089 |
if (!s->version) {
|
2090 |
s->version = g_strdup(qemu_get_version()); |
2091 |
} |
2092 |
if (!s->vendor) {
|
2093 |
s->vendor = g_strdup("QEMU");
|
2094 |
} |
2095 |
|
2096 |
if (bdrv_is_sg(s->qdev.conf.bs)) {
|
2097 |
error_report("unwanted /dev/sg*");
|
2098 |
return -1; |
2099 |
} |
2100 |
|
2101 |
if (s->features & (1 << SCSI_DISK_F_REMOVABLE)) { |
2102 |
bdrv_set_dev_ops(s->qdev.conf.bs, &scsi_disk_removable_block_ops, s); |
2103 |
} else {
|
2104 |
bdrv_set_dev_ops(s->qdev.conf.bs, &scsi_disk_block_ops, s); |
2105 |
} |
2106 |
bdrv_set_buffer_alignment(s->qdev.conf.bs, s->qdev.blocksize); |
2107 |
|
2108 |
bdrv_iostatus_enable(s->qdev.conf.bs); |
2109 |
add_boot_device_path(s->qdev.conf.bootindex, &dev->qdev, NULL);
|
2110 |
return 0; |
2111 |
} |
2112 |
|
2113 |
static int scsi_hd_initfn(SCSIDevice *dev) |
2114 |
{ |
2115 |
SCSIDiskState *s = DO_UPCAST(SCSIDiskState, qdev, dev); |
2116 |
s->qdev.blocksize = s->qdev.conf.logical_block_size; |
2117 |
s->qdev.type = TYPE_DISK; |
2118 |
if (!s->product) {
|
2119 |
s->product = g_strdup("QEMU HARDDISK");
|
2120 |
} |
2121 |
return scsi_initfn(&s->qdev);
|
2122 |
} |
2123 |
|
2124 |
static int scsi_cd_initfn(SCSIDevice *dev) |
2125 |
{ |
2126 |
SCSIDiskState *s = DO_UPCAST(SCSIDiskState, qdev, dev); |
2127 |
s->qdev.blocksize = 2048;
|
2128 |
s->qdev.type = TYPE_ROM; |
2129 |
s->features |= 1 << SCSI_DISK_F_REMOVABLE;
|
2130 |
if (!s->product) {
|
2131 |
s->product = g_strdup("QEMU CD-ROM");
|
2132 |
} |
2133 |
return scsi_initfn(&s->qdev);
|
2134 |
} |
2135 |
|
2136 |
static int scsi_disk_initfn(SCSIDevice *dev) |
2137 |
{ |
2138 |
DriveInfo *dinfo; |
2139 |
|
2140 |
if (!dev->conf.bs) {
|
2141 |
return scsi_initfn(dev); /* ... and die there */ |
2142 |
} |
2143 |
|
2144 |
dinfo = drive_get_by_blockdev(dev->conf.bs); |
2145 |
if (dinfo->media_cd) {
|
2146 |
return scsi_cd_initfn(dev);
|
2147 |
} else {
|
2148 |
return scsi_hd_initfn(dev);
|
2149 |
} |
2150 |
} |
2151 |
|
2152 |
static const SCSIReqOps scsi_disk_emulate_reqops = { |
2153 |
.size = sizeof(SCSIDiskReq),
|
2154 |
.free_req = scsi_free_request, |
2155 |
.send_command = scsi_disk_emulate_command, |
2156 |
.read_data = scsi_disk_emulate_read_data, |
2157 |
.write_data = scsi_disk_emulate_write_data, |
2158 |
.get_buf = scsi_get_buf, |
2159 |
}; |
2160 |
|
2161 |
static const SCSIReqOps scsi_disk_dma_reqops = { |
2162 |
.size = sizeof(SCSIDiskReq),
|
2163 |
.free_req = scsi_free_request, |
2164 |
.send_command = scsi_disk_dma_command, |
2165 |
.read_data = scsi_read_data, |
2166 |
.write_data = scsi_write_data, |
2167 |
.cancel_io = scsi_cancel_io, |
2168 |
.get_buf = scsi_get_buf, |
2169 |
.load_request = scsi_disk_load_request, |
2170 |
.save_request = scsi_disk_save_request, |
2171 |
}; |
2172 |
|
2173 |
static const SCSIReqOps *const scsi_disk_reqops_dispatch[256] = { |
2174 |
[TEST_UNIT_READY] = &scsi_disk_emulate_reqops, |
2175 |
[INQUIRY] = &scsi_disk_emulate_reqops, |
2176 |
[MODE_SENSE] = &scsi_disk_emulate_reqops, |
2177 |
[MODE_SENSE_10] = &scsi_disk_emulate_reqops, |
2178 |
[START_STOP] = &scsi_disk_emulate_reqops, |
2179 |
[ALLOW_MEDIUM_REMOVAL] = &scsi_disk_emulate_reqops, |
2180 |
[READ_CAPACITY_10] = &scsi_disk_emulate_reqops, |
2181 |
[READ_TOC] = &scsi_disk_emulate_reqops, |
2182 |
[READ_DVD_STRUCTURE] = &scsi_disk_emulate_reqops, |
2183 |
[READ_DISC_INFORMATION] = &scsi_disk_emulate_reqops, |
2184 |
[GET_CONFIGURATION] = &scsi_disk_emulate_reqops, |
2185 |
[GET_EVENT_STATUS_NOTIFICATION] = &scsi_disk_emulate_reqops, |
2186 |
[MECHANISM_STATUS] = &scsi_disk_emulate_reqops, |
2187 |
[SERVICE_ACTION_IN_16] = &scsi_disk_emulate_reqops, |
2188 |
[REQUEST_SENSE] = &scsi_disk_emulate_reqops, |
2189 |
[SYNCHRONIZE_CACHE] = &scsi_disk_emulate_reqops, |
2190 |
[SEEK_10] = &scsi_disk_emulate_reqops, |
2191 |
[MODE_SELECT] = &scsi_disk_emulate_reqops, |
2192 |
[MODE_SELECT_10] = &scsi_disk_emulate_reqops, |
2193 |
[UNMAP] = &scsi_disk_emulate_reqops, |
2194 |
[WRITE_SAME_10] = &scsi_disk_emulate_reqops, |
2195 |
[WRITE_SAME_16] = &scsi_disk_emulate_reqops, |
2196 |
|
2197 |
[READ_6] = &scsi_disk_dma_reqops, |
2198 |
[READ_10] = &scsi_disk_dma_reqops, |
2199 |
[READ_12] = &scsi_disk_dma_reqops, |
2200 |
[READ_16] = &scsi_disk_dma_reqops, |
2201 |
[VERIFY_10] = &scsi_disk_dma_reqops, |
2202 |
[VERIFY_12] = &scsi_disk_dma_reqops, |
2203 |
[VERIFY_16] = &scsi_disk_dma_reqops, |
2204 |
[WRITE_6] = &scsi_disk_dma_reqops, |
2205 |
[WRITE_10] = &scsi_disk_dma_reqops, |
2206 |
[WRITE_12] = &scsi_disk_dma_reqops, |
2207 |
[WRITE_16] = &scsi_disk_dma_reqops, |
2208 |
[WRITE_VERIFY_10] = &scsi_disk_dma_reqops, |
2209 |
[WRITE_VERIFY_12] = &scsi_disk_dma_reqops, |
2210 |
[WRITE_VERIFY_16] = &scsi_disk_dma_reqops, |
2211 |
}; |
2212 |
|
2213 |
static SCSIRequest *scsi_new_request(SCSIDevice *d, uint32_t tag, uint32_t lun,
|
2214 |
uint8_t *buf, void *hba_private)
|
2215 |
{ |
2216 |
SCSIDiskState *s = DO_UPCAST(SCSIDiskState, qdev, d); |
2217 |
SCSIRequest *req; |
2218 |
const SCSIReqOps *ops;
|
2219 |
uint8_t command; |
2220 |
|
2221 |
command = buf[0];
|
2222 |
ops = scsi_disk_reqops_dispatch[command]; |
2223 |
if (!ops) {
|
2224 |
ops = &scsi_disk_emulate_reqops; |
2225 |
} |
2226 |
req = scsi_req_alloc(ops, &s->qdev, tag, lun, hba_private); |
2227 |
|
2228 |
#ifdef DEBUG_SCSI
|
2229 |
DPRINTF("Command: lun=%d tag=0x%x data=0x%02x", lun, tag, buf[0]); |
2230 |
{ |
2231 |
int i;
|
2232 |
for (i = 1; i < req->cmd.len; i++) { |
2233 |
printf(" 0x%02x", buf[i]);
|
2234 |
} |
2235 |
printf("\n");
|
2236 |
} |
2237 |
#endif
|
2238 |
|
2239 |
return req;
|
2240 |
} |
2241 |
|
2242 |
#ifdef __linux__
|
2243 |
static int get_device_type(SCSIDiskState *s) |
2244 |
{ |
2245 |
BlockDriverState *bdrv = s->qdev.conf.bs; |
2246 |
uint8_t cmd[16];
|
2247 |
uint8_t buf[36];
|
2248 |
uint8_t sensebuf[8];
|
2249 |
sg_io_hdr_t io_header; |
2250 |
int ret;
|
2251 |
|
2252 |
memset(cmd, 0, sizeof(cmd)); |
2253 |
memset(buf, 0, sizeof(buf)); |
2254 |
cmd[0] = INQUIRY;
|
2255 |
cmd[4] = sizeof(buf); |
2256 |
|
2257 |
memset(&io_header, 0, sizeof(io_header)); |
2258 |
io_header.interface_id = 'S';
|
2259 |
io_header.dxfer_direction = SG_DXFER_FROM_DEV; |
2260 |
io_header.dxfer_len = sizeof(buf);
|
2261 |
io_header.dxferp = buf; |
2262 |
io_header.cmdp = cmd; |
2263 |
io_header.cmd_len = sizeof(cmd);
|
2264 |
io_header.mx_sb_len = sizeof(sensebuf);
|
2265 |
io_header.sbp = sensebuf; |
2266 |
io_header.timeout = 6000; /* XXX */ |
2267 |
|
2268 |
ret = bdrv_ioctl(bdrv, SG_IO, &io_header); |
2269 |
if (ret < 0 || io_header.driver_status || io_header.host_status) { |
2270 |
return -1; |
2271 |
} |
2272 |
s->qdev.type = buf[0];
|
2273 |
if (buf[1] & 0x80) { |
2274 |
s->features |= 1 << SCSI_DISK_F_REMOVABLE;
|
2275 |
} |
2276 |
return 0; |
2277 |
} |
2278 |
|
2279 |
static int scsi_block_initfn(SCSIDevice *dev) |
2280 |
{ |
2281 |
SCSIDiskState *s = DO_UPCAST(SCSIDiskState, qdev, dev); |
2282 |
int sg_version;
|
2283 |
int rc;
|
2284 |
|
2285 |
if (!s->qdev.conf.bs) {
|
2286 |
error_report("scsi-block: drive property not set");
|
2287 |
return -1; |
2288 |
} |
2289 |
|
2290 |
/* check we are using a driver managing SG_IO (version 3 and after) */
|
2291 |
if (bdrv_ioctl(s->qdev.conf.bs, SG_GET_VERSION_NUM, &sg_version) < 0 || |
2292 |
sg_version < 30000) {
|
2293 |
error_report("scsi-block: scsi generic interface too old");
|
2294 |
return -1; |
2295 |
} |
2296 |
|
2297 |
/* get device type from INQUIRY data */
|
2298 |
rc = get_device_type(s); |
2299 |
if (rc < 0) { |
2300 |
error_report("scsi-block: INQUIRY failed");
|
2301 |
return -1; |
2302 |
} |
2303 |
|
2304 |
/* Make a guess for the block size, we'll fix it when the guest sends.
|
2305 |
* READ CAPACITY. If they don't, they likely would assume these sizes
|
2306 |
* anyway. (TODO: check in /sys).
|
2307 |
*/
|
2308 |
if (s->qdev.type == TYPE_ROM || s->qdev.type == TYPE_WORM) {
|
2309 |
s->qdev.blocksize = 2048;
|
2310 |
} else {
|
2311 |
s->qdev.blocksize = 512;
|
2312 |
} |
2313 |
return scsi_initfn(&s->qdev);
|
2314 |
} |
2315 |
|
2316 |
static SCSIRequest *scsi_block_new_request(SCSIDevice *d, uint32_t tag,
|
2317 |
uint32_t lun, uint8_t *buf, |
2318 |
void *hba_private)
|
2319 |
{ |
2320 |
SCSIDiskState *s = DO_UPCAST(SCSIDiskState, qdev, d); |
2321 |
|
2322 |
switch (buf[0]) { |
2323 |
case READ_6:
|
2324 |
case READ_10:
|
2325 |
case READ_12:
|
2326 |
case READ_16:
|
2327 |
case VERIFY_10:
|
2328 |
case VERIFY_12:
|
2329 |
case VERIFY_16:
|
2330 |
case WRITE_6:
|
2331 |
case WRITE_10:
|
2332 |
case WRITE_12:
|
2333 |
case WRITE_16:
|
2334 |
case WRITE_VERIFY_10:
|
2335 |
case WRITE_VERIFY_12:
|
2336 |
case WRITE_VERIFY_16:
|
2337 |
/* If we are not using O_DIRECT, we might read stale data from the
|
2338 |
* host cache if writes were made using other commands than these
|
2339 |
* ones (such as WRITE SAME or EXTENDED COPY, etc.). So, without
|
2340 |
* O_DIRECT everything must go through SG_IO.
|
2341 |
*/
|
2342 |
if (bdrv_get_flags(s->qdev.conf.bs) & BDRV_O_NOCACHE) {
|
2343 |
break;
|
2344 |
} |
2345 |
|
2346 |
/* MMC writing cannot be done via pread/pwrite, because it sometimes
|
2347 |
* involves writing beyond the maximum LBA or to negative LBA (lead-in).
|
2348 |
* And once you do these writes, reading from the block device is
|
2349 |
* unreliable, too. It is even possible that reads deliver random data
|
2350 |
* from the host page cache (this is probably a Linux bug).
|
2351 |
*
|
2352 |
* We might use scsi_disk_dma_reqops as long as no writing commands are
|
2353 |
* seen, but performance usually isn't paramount on optical media. So,
|
2354 |
* just make scsi-block operate the same as scsi-generic for them.
|
2355 |
*/
|
2356 |
if (s->qdev.type != TYPE_ROM) {
|
2357 |
return scsi_req_alloc(&scsi_disk_dma_reqops, &s->qdev, tag, lun,
|
2358 |
hba_private); |
2359 |
} |
2360 |
} |
2361 |
|
2362 |
return scsi_req_alloc(&scsi_generic_req_ops, &s->qdev, tag, lun,
|
2363 |
hba_private); |
2364 |
} |
2365 |
#endif
|
2366 |
|
2367 |
#define DEFINE_SCSI_DISK_PROPERTIES() \
|
2368 |
DEFINE_BLOCK_PROPERTIES(SCSIDiskState, qdev.conf), \ |
2369 |
DEFINE_PROP_STRING("ver", SCSIDiskState, version), \
|
2370 |
DEFINE_PROP_STRING("serial", SCSIDiskState, serial), \
|
2371 |
DEFINE_PROP_STRING("vendor", SCSIDiskState, vendor), \
|
2372 |
DEFINE_PROP_STRING("product", SCSIDiskState, product)
|
2373 |
|
2374 |
static Property scsi_hd_properties[] = {
|
2375 |
DEFINE_SCSI_DISK_PROPERTIES(), |
2376 |
DEFINE_PROP_BIT("removable", SCSIDiskState, features,
|
2377 |
SCSI_DISK_F_REMOVABLE, false),
|
2378 |
DEFINE_PROP_BIT("dpofua", SCSIDiskState, features,
|
2379 |
SCSI_DISK_F_DPOFUA, false),
|
2380 |
DEFINE_PROP_HEX64("wwn", SCSIDiskState, wwn, 0), |
2381 |
DEFINE_BLOCK_CHS_PROPERTIES(SCSIDiskState, qdev.conf), |
2382 |
DEFINE_PROP_END_OF_LIST(), |
2383 |
}; |
2384 |
|
2385 |
static const VMStateDescription vmstate_scsi_disk_state = { |
2386 |
.name = "scsi-disk",
|
2387 |
.version_id = 1,
|
2388 |
.minimum_version_id = 1,
|
2389 |
.minimum_version_id_old = 1,
|
2390 |
.fields = (VMStateField[]) { |
2391 |
VMSTATE_SCSI_DEVICE(qdev, SCSIDiskState), |
2392 |
VMSTATE_BOOL(media_changed, SCSIDiskState), |
2393 |
VMSTATE_BOOL(media_event, SCSIDiskState), |
2394 |
VMSTATE_BOOL(eject_request, SCSIDiskState), |
2395 |
VMSTATE_BOOL(tray_open, SCSIDiskState), |
2396 |
VMSTATE_BOOL(tray_locked, SCSIDiskState), |
2397 |
VMSTATE_END_OF_LIST() |
2398 |
} |
2399 |
}; |
2400 |
|
2401 |
static void scsi_hd_class_initfn(ObjectClass *klass, void *data) |
2402 |
{ |
2403 |
DeviceClass *dc = DEVICE_CLASS(klass); |
2404 |
SCSIDeviceClass *sc = SCSI_DEVICE_CLASS(klass); |
2405 |
|
2406 |
sc->init = scsi_hd_initfn; |
2407 |
sc->destroy = scsi_destroy; |
2408 |
sc->alloc_req = scsi_new_request; |
2409 |
sc->unit_attention_reported = scsi_disk_unit_attention_reported; |
2410 |
dc->fw_name = "disk";
|
2411 |
dc->desc = "virtual SCSI disk";
|
2412 |
dc->reset = scsi_disk_reset; |
2413 |
dc->props = scsi_hd_properties; |
2414 |
dc->vmsd = &vmstate_scsi_disk_state; |
2415 |
} |
2416 |
|
2417 |
static const TypeInfo scsi_hd_info = { |
2418 |
.name = "scsi-hd",
|
2419 |
.parent = TYPE_SCSI_DEVICE, |
2420 |
.instance_size = sizeof(SCSIDiskState),
|
2421 |
.class_init = scsi_hd_class_initfn, |
2422 |
}; |
2423 |
|
2424 |
static Property scsi_cd_properties[] = {
|
2425 |
DEFINE_SCSI_DISK_PROPERTIES(), |
2426 |
DEFINE_PROP_HEX64("wwn", SCSIDiskState, wwn, 0), |
2427 |
DEFINE_PROP_END_OF_LIST(), |
2428 |
}; |
2429 |
|
2430 |
static void scsi_cd_class_initfn(ObjectClass *klass, void *data) |
2431 |
{ |
2432 |
DeviceClass *dc = DEVICE_CLASS(klass); |
2433 |
SCSIDeviceClass *sc = SCSI_DEVICE_CLASS(klass); |
2434 |
|
2435 |
sc->init = scsi_cd_initfn; |
2436 |
sc->destroy = scsi_destroy; |
2437 |
sc->alloc_req = scsi_new_request; |
2438 |
sc->unit_attention_reported = scsi_disk_unit_attention_reported; |
2439 |
dc->fw_name = "disk";
|
2440 |
dc->desc = "virtual SCSI CD-ROM";
|
2441 |
dc->reset = scsi_disk_reset; |
2442 |
dc->props = scsi_cd_properties; |
2443 |
dc->vmsd = &vmstate_scsi_disk_state; |
2444 |
} |
2445 |
|
2446 |
static const TypeInfo scsi_cd_info = { |
2447 |
.name = "scsi-cd",
|
2448 |
.parent = TYPE_SCSI_DEVICE, |
2449 |
.instance_size = sizeof(SCSIDiskState),
|
2450 |
.class_init = scsi_cd_class_initfn, |
2451 |
}; |
2452 |
|
2453 |
#ifdef __linux__
|
2454 |
static Property scsi_block_properties[] = {
|
2455 |
DEFINE_PROP_DRIVE("drive", SCSIDiskState, qdev.conf.bs),
|
2456 |
DEFINE_PROP_INT32("bootindex", SCSIDiskState, qdev.conf.bootindex, -1), |
2457 |
DEFINE_PROP_END_OF_LIST(), |
2458 |
}; |
2459 |
|
2460 |
static void scsi_block_class_initfn(ObjectClass *klass, void *data) |
2461 |
{ |
2462 |
DeviceClass *dc = DEVICE_CLASS(klass); |
2463 |
SCSIDeviceClass *sc = SCSI_DEVICE_CLASS(klass); |
2464 |
|
2465 |
sc->init = scsi_block_initfn; |
2466 |
sc->destroy = scsi_destroy; |
2467 |
sc->alloc_req = scsi_block_new_request; |
2468 |
dc->fw_name = "disk";
|
2469 |
dc->desc = "SCSI block device passthrough";
|
2470 |
dc->reset = scsi_disk_reset; |
2471 |
dc->props = scsi_block_properties; |
2472 |
dc->vmsd = &vmstate_scsi_disk_state; |
2473 |
} |
2474 |
|
2475 |
static const TypeInfo scsi_block_info = { |
2476 |
.name = "scsi-block",
|
2477 |
.parent = TYPE_SCSI_DEVICE, |
2478 |
.instance_size = sizeof(SCSIDiskState),
|
2479 |
.class_init = scsi_block_class_initfn, |
2480 |
}; |
2481 |
#endif
|
2482 |
|
2483 |
static Property scsi_disk_properties[] = {
|
2484 |
DEFINE_SCSI_DISK_PROPERTIES(), |
2485 |
DEFINE_PROP_BIT("removable", SCSIDiskState, features,
|
2486 |
SCSI_DISK_F_REMOVABLE, false),
|
2487 |
DEFINE_PROP_BIT("dpofua", SCSIDiskState, features,
|
2488 |
SCSI_DISK_F_DPOFUA, false),
|
2489 |
DEFINE_PROP_HEX64("wwn", SCSIDiskState, wwn, 0), |
2490 |
DEFINE_PROP_END_OF_LIST(), |
2491 |
}; |
2492 |
|
2493 |
static void scsi_disk_class_initfn(ObjectClass *klass, void *data) |
2494 |
{ |
2495 |
DeviceClass *dc = DEVICE_CLASS(klass); |
2496 |
SCSIDeviceClass *sc = SCSI_DEVICE_CLASS(klass); |
2497 |
|
2498 |
sc->init = scsi_disk_initfn; |
2499 |
sc->destroy = scsi_destroy; |
2500 |
sc->alloc_req = scsi_new_request; |
2501 |
sc->unit_attention_reported = scsi_disk_unit_attention_reported; |
2502 |
dc->fw_name = "disk";
|
2503 |
dc->desc = "virtual SCSI disk or CD-ROM (legacy)";
|
2504 |
dc->reset = scsi_disk_reset; |
2505 |
dc->props = scsi_disk_properties; |
2506 |
dc->vmsd = &vmstate_scsi_disk_state; |
2507 |
} |
2508 |
|
2509 |
static const TypeInfo scsi_disk_info = { |
2510 |
.name = "scsi-disk",
|
2511 |
.parent = TYPE_SCSI_DEVICE, |
2512 |
.instance_size = sizeof(SCSIDiskState),
|
2513 |
.class_init = scsi_disk_class_initfn, |
2514 |
}; |
2515 |
|
2516 |
static void scsi_disk_register_types(void) |
2517 |
{ |
2518 |
type_register_static(&scsi_hd_info); |
2519 |
type_register_static(&scsi_cd_info); |
2520 |
#ifdef __linux__
|
2521 |
type_register_static(&scsi_block_info); |
2522 |
#endif
|
2523 |
type_register_static(&scsi_disk_info); |
2524 |
} |
2525 |
|
2526 |
type_init(scsi_disk_register_types) |