root / hw / scsi-generic.c @ 40f16dd1
History | View | Annotate | Download (15.6 kB)
1 |
/*
|
---|---|
2 |
* Generic SCSI Device support
|
3 |
*
|
4 |
* Copyright (c) 2007 Bull S.A.S.
|
5 |
* Based on code by Paul Brook
|
6 |
* Based on code by Fabrice Bellard
|
7 |
*
|
8 |
* Written by Laurent Vivier <Laurent.Vivier@bull.net>
|
9 |
*
|
10 |
* This code is licenced under the LGPL.
|
11 |
*
|
12 |
*/
|
13 |
|
14 |
#include "qemu-common.h" |
15 |
#include "qemu-error.h" |
16 |
#include "scsi.h" |
17 |
#include "blockdev.h" |
18 |
|
19 |
#ifdef __linux__
|
20 |
|
21 |
//#define DEBUG_SCSI
|
22 |
|
23 |
#ifdef DEBUG_SCSI
|
24 |
#define DPRINTF(fmt, ...) \
|
25 |
do { printf("scsi-generic: " fmt , ## __VA_ARGS__); } while (0) |
26 |
#else
|
27 |
#define DPRINTF(fmt, ...) do {} while(0) |
28 |
#endif
|
29 |
|
30 |
#define BADF(fmt, ...) \
|
31 |
do { fprintf(stderr, "scsi-generic: " fmt , ## __VA_ARGS__); } while (0) |
32 |
|
33 |
#include <stdio.h> |
34 |
#include <sys/types.h> |
35 |
#include <sys/stat.h> |
36 |
#include <unistd.h> |
37 |
#include <scsi/sg.h> |
38 |
#include "scsi-defs.h" |
39 |
|
40 |
#define SCSI_SENSE_BUF_SIZE 96 |
41 |
|
42 |
#define SG_ERR_DRIVER_TIMEOUT 0x06 |
43 |
#define SG_ERR_DRIVER_SENSE 0x08 |
44 |
|
45 |
#ifndef MAX_UINT
|
46 |
#define MAX_UINT ((unsigned int)-1) |
47 |
#endif
|
48 |
|
49 |
typedef struct SCSIGenericState SCSIGenericState; |
50 |
|
51 |
typedef struct SCSIGenericReq { |
52 |
SCSIRequest req; |
53 |
uint8_t *buf; |
54 |
int buflen;
|
55 |
int len;
|
56 |
sg_io_hdr_t io_header; |
57 |
} SCSIGenericReq; |
58 |
|
59 |
struct SCSIGenericState
|
60 |
{ |
61 |
SCSIDevice qdev; |
62 |
BlockDriverState *bs; |
63 |
int lun;
|
64 |
int driver_status;
|
65 |
uint8_t sensebuf[SCSI_SENSE_BUF_SIZE]; |
66 |
uint8_t senselen; |
67 |
}; |
68 |
|
69 |
static SCSIGenericReq *scsi_new_request(SCSIDevice *d, uint32_t tag, uint32_t lun)
|
70 |
{ |
71 |
SCSIRequest *req; |
72 |
|
73 |
req = scsi_req_alloc(sizeof(SCSIGenericReq), d, tag, lun);
|
74 |
return DO_UPCAST(SCSIGenericReq, req, req);
|
75 |
} |
76 |
|
77 |
static void scsi_remove_request(SCSIGenericReq *r) |
78 |
{ |
79 |
qemu_free(r->buf); |
80 |
scsi_req_free(&r->req); |
81 |
} |
82 |
|
83 |
static SCSIGenericReq *scsi_find_request(SCSIGenericState *s, uint32_t tag)
|
84 |
{ |
85 |
return DO_UPCAST(SCSIGenericReq, req, scsi_req_find(&s->qdev, tag));
|
86 |
} |
87 |
|
88 |
/* Helper function for command completion. */
|
89 |
static void scsi_command_complete(void *opaque, int ret) |
90 |
{ |
91 |
SCSIGenericReq *r = (SCSIGenericReq *)opaque; |
92 |
SCSIGenericState *s = DO_UPCAST(SCSIGenericState, qdev, r->req.dev); |
93 |
|
94 |
s->driver_status = r->io_header.driver_status; |
95 |
if (s->driver_status & SG_ERR_DRIVER_SENSE)
|
96 |
s->senselen = r->io_header.sb_len_wr; |
97 |
|
98 |
if (ret != 0) |
99 |
r->req.status = BUSY; |
100 |
else {
|
101 |
if (s->driver_status & SG_ERR_DRIVER_TIMEOUT) {
|
102 |
r->req.status = BUSY; |
103 |
BADF("Driver Timeout\n");
|
104 |
} else if (r->io_header.status) |
105 |
r->req.status = r->io_header.status; |
106 |
else if (s->driver_status & SG_ERR_DRIVER_SENSE) |
107 |
r->req.status = CHECK_CONDITION; |
108 |
else
|
109 |
r->req.status = GOOD; |
110 |
} |
111 |
DPRINTF("Command complete 0x%p tag=0x%x status=%d\n",
|
112 |
r, r->req.tag, r->req.status); |
113 |
|
114 |
scsi_req_complete(&r->req); |
115 |
scsi_remove_request(r); |
116 |
} |
117 |
|
118 |
/* Cancel a pending data transfer. */
|
119 |
static void scsi_cancel_io(SCSIDevice *d, uint32_t tag) |
120 |
{ |
121 |
DPRINTF("scsi_cancel_io 0x%x\n", tag);
|
122 |
SCSIGenericState *s = DO_UPCAST(SCSIGenericState, qdev, d); |
123 |
SCSIGenericReq *r; |
124 |
DPRINTF("Cancel tag=0x%x\n", tag);
|
125 |
r = scsi_find_request(s, tag); |
126 |
if (r) {
|
127 |
if (r->req.aiocb)
|
128 |
bdrv_aio_cancel(r->req.aiocb); |
129 |
r->req.aiocb = NULL;
|
130 |
scsi_remove_request(r); |
131 |
} |
132 |
} |
133 |
|
134 |
static int execute_command(BlockDriverState *bdrv, |
135 |
SCSIGenericReq *r, int direction,
|
136 |
BlockDriverCompletionFunc *complete) |
137 |
{ |
138 |
SCSIGenericState *s = DO_UPCAST(SCSIGenericState, qdev, r->req.dev); |
139 |
|
140 |
r->io_header.interface_id = 'S';
|
141 |
r->io_header.dxfer_direction = direction; |
142 |
r->io_header.dxferp = r->buf; |
143 |
r->io_header.dxfer_len = r->buflen; |
144 |
r->io_header.cmdp = r->req.cmd.buf; |
145 |
r->io_header.cmd_len = r->req.cmd.len; |
146 |
r->io_header.mx_sb_len = sizeof(s->sensebuf);
|
147 |
r->io_header.sbp = s->sensebuf; |
148 |
r->io_header.timeout = MAX_UINT; |
149 |
r->io_header.usr_ptr = r; |
150 |
r->io_header.flags |= SG_FLAG_DIRECT_IO; |
151 |
|
152 |
r->req.aiocb = bdrv_aio_ioctl(bdrv, SG_IO, &r->io_header, complete, r); |
153 |
if (r->req.aiocb == NULL) { |
154 |
BADF("execute_command: read failed !\n");
|
155 |
return -1; |
156 |
} |
157 |
|
158 |
return 0; |
159 |
} |
160 |
|
161 |
static void scsi_read_complete(void * opaque, int ret) |
162 |
{ |
163 |
SCSIGenericReq *r = (SCSIGenericReq *)opaque; |
164 |
int len;
|
165 |
|
166 |
if (ret) {
|
167 |
DPRINTF("IO error ret %d\n", ret);
|
168 |
scsi_command_complete(r, ret); |
169 |
return;
|
170 |
} |
171 |
len = r->io_header.dxfer_len - r->io_header.resid; |
172 |
DPRINTF("Data ready tag=0x%x len=%d\n", r->req.tag, len);
|
173 |
|
174 |
r->len = -1;
|
175 |
if (len == 0) { |
176 |
scsi_command_complete(r, 0);
|
177 |
} else {
|
178 |
r->req.bus->complete(r->req.bus, SCSI_REASON_DATA, r->req.tag, len); |
179 |
} |
180 |
} |
181 |
|
182 |
/* Read more data from scsi device into buffer. */
|
183 |
static void scsi_read_data(SCSIDevice *d, uint32_t tag) |
184 |
{ |
185 |
SCSIGenericState *s = DO_UPCAST(SCSIGenericState, qdev, d); |
186 |
SCSIGenericReq *r; |
187 |
int ret;
|
188 |
|
189 |
DPRINTF("scsi_read_data 0x%x\n", tag);
|
190 |
r = scsi_find_request(s, tag); |
191 |
if (!r) {
|
192 |
BADF("Bad read tag 0x%x\n", tag);
|
193 |
/* ??? This is the wrong error. */
|
194 |
scsi_command_complete(r, -EINVAL); |
195 |
return;
|
196 |
} |
197 |
|
198 |
if (r->len == -1) { |
199 |
scsi_command_complete(r, 0);
|
200 |
return;
|
201 |
} |
202 |
|
203 |
if (r->req.cmd.buf[0] == REQUEST_SENSE && s->driver_status & SG_ERR_DRIVER_SENSE) |
204 |
{ |
205 |
s->senselen = MIN(r->len, s->senselen); |
206 |
memcpy(r->buf, s->sensebuf, s->senselen); |
207 |
r->io_header.driver_status = 0;
|
208 |
r->io_header.status = 0;
|
209 |
r->io_header.dxfer_len = s->senselen; |
210 |
r->len = -1;
|
211 |
DPRINTF("Data ready tag=0x%x len=%d\n", r->req.tag, s->senselen);
|
212 |
DPRINTF("Sense: %d %d %d %d %d %d %d %d\n",
|
213 |
r->buf[0], r->buf[1], r->buf[2], r->buf[3], |
214 |
r->buf[4], r->buf[5], r->buf[6], r->buf[7]); |
215 |
r->req.bus->complete(r->req.bus, SCSI_REASON_DATA, r->req.tag, s->senselen); |
216 |
return;
|
217 |
} |
218 |
|
219 |
ret = execute_command(s->bs, r, SG_DXFER_FROM_DEV, scsi_read_complete); |
220 |
if (ret == -1) { |
221 |
scsi_command_complete(r, -EINVAL); |
222 |
return;
|
223 |
} |
224 |
} |
225 |
|
226 |
static void scsi_write_complete(void * opaque, int ret) |
227 |
{ |
228 |
SCSIGenericReq *r = (SCSIGenericReq *)opaque; |
229 |
SCSIGenericState *s = DO_UPCAST(SCSIGenericState, qdev, r->req.dev); |
230 |
|
231 |
DPRINTF("scsi_write_complete() ret = %d\n", ret);
|
232 |
if (ret) {
|
233 |
DPRINTF("IO error\n");
|
234 |
scsi_command_complete(r, ret); |
235 |
return;
|
236 |
} |
237 |
|
238 |
if (r->req.cmd.buf[0] == MODE_SELECT && r->req.cmd.buf[4] == 12 && |
239 |
s->qdev.type == TYPE_TAPE) { |
240 |
s->qdev.blocksize = (r->buf[9] << 16) | (r->buf[10] << 8) | r->buf[11]; |
241 |
DPRINTF("block size %d\n", s->qdev.blocksize);
|
242 |
} |
243 |
|
244 |
scsi_command_complete(r, ret); |
245 |
} |
246 |
|
247 |
/* Write data to a scsi device. Returns nonzero on failure.
|
248 |
The transfer may complete asynchronously. */
|
249 |
static int scsi_write_data(SCSIDevice *d, uint32_t tag) |
250 |
{ |
251 |
SCSIGenericState *s = DO_UPCAST(SCSIGenericState, qdev, d); |
252 |
SCSIGenericReq *r; |
253 |
int ret;
|
254 |
|
255 |
DPRINTF("scsi_write_data 0x%x\n", tag);
|
256 |
r = scsi_find_request(s, tag); |
257 |
if (!r) {
|
258 |
BADF("Bad write tag 0x%x\n", tag);
|
259 |
/* ??? This is the wrong error. */
|
260 |
scsi_command_complete(r, -EINVAL); |
261 |
return 0; |
262 |
} |
263 |
|
264 |
if (r->len == 0) { |
265 |
r->len = r->buflen; |
266 |
r->req.bus->complete(r->req.bus, SCSI_REASON_DATA, r->req.tag, r->len); |
267 |
return 0; |
268 |
} |
269 |
|
270 |
ret = execute_command(s->bs, r, SG_DXFER_TO_DEV, scsi_write_complete); |
271 |
if (ret == -1) { |
272 |
scsi_command_complete(r, -EINVAL); |
273 |
return 1; |
274 |
} |
275 |
|
276 |
return 0; |
277 |
} |
278 |
|
279 |
/* Return a pointer to the data buffer. */
|
280 |
static uint8_t *scsi_get_buf(SCSIDevice *d, uint32_t tag)
|
281 |
{ |
282 |
SCSIGenericState *s = DO_UPCAST(SCSIGenericState, qdev, d); |
283 |
SCSIGenericReq *r; |
284 |
r = scsi_find_request(s, tag); |
285 |
if (!r) {
|
286 |
BADF("Bad buffer tag 0x%x\n", tag);
|
287 |
return NULL; |
288 |
} |
289 |
return r->buf;
|
290 |
} |
291 |
|
292 |
static void scsi_req_fixup(SCSIRequest *req) |
293 |
{ |
294 |
switch(req->cmd.buf[0]) { |
295 |
case WRITE_10:
|
296 |
req->cmd.buf[1] &= ~0x08; /* disable FUA */ |
297 |
break;
|
298 |
case READ_10:
|
299 |
req->cmd.buf[1] &= ~0x08; /* disable FUA */ |
300 |
break;
|
301 |
case REWIND:
|
302 |
case START_STOP:
|
303 |
if (req->dev->type == TYPE_TAPE) {
|
304 |
/* force IMMED, otherwise qemu waits end of command */
|
305 |
req->cmd.buf[1] = 0x01; |
306 |
} |
307 |
break;
|
308 |
} |
309 |
} |
310 |
|
311 |
/* Execute a scsi command. Returns the length of the data expected by the
|
312 |
command. This will be Positive for data transfers from the device
|
313 |
(eg. disk reads), negative for transfers to the device (eg. disk writes),
|
314 |
and zero if the command does not transfer any data. */
|
315 |
|
316 |
static int32_t scsi_send_command(SCSIDevice *d, uint32_t tag,
|
317 |
uint8_t *cmd, int lun)
|
318 |
{ |
319 |
SCSIGenericState *s = DO_UPCAST(SCSIGenericState, qdev, d); |
320 |
SCSIGenericReq *r; |
321 |
SCSIBus *bus; |
322 |
int ret;
|
323 |
|
324 |
if (cmd[0] != REQUEST_SENSE && |
325 |
(lun != s->lun || (cmd[1] >> 5) != s->lun)) { |
326 |
DPRINTF("Unimplemented LUN %d\n", lun ? lun : cmd[1] >> 5); |
327 |
|
328 |
s->sensebuf[0] = 0x70; |
329 |
s->sensebuf[1] = 0x00; |
330 |
s->sensebuf[2] = ILLEGAL_REQUEST;
|
331 |
s->sensebuf[3] = 0x00; |
332 |
s->sensebuf[4] = 0x00; |
333 |
s->sensebuf[5] = 0x00; |
334 |
s->sensebuf[6] = 0x00; |
335 |
s->senselen = 7;
|
336 |
s->driver_status = SG_ERR_DRIVER_SENSE; |
337 |
bus = scsi_bus_from_device(d); |
338 |
bus->complete(bus, SCSI_REASON_DONE, tag, CHECK_CONDITION); |
339 |
return 0; |
340 |
} |
341 |
|
342 |
r = scsi_find_request(s, tag); |
343 |
if (r) {
|
344 |
BADF("Tag 0x%x already in use %p\n", tag, r);
|
345 |
scsi_cancel_io(d, tag); |
346 |
} |
347 |
r = scsi_new_request(d, tag, lun); |
348 |
|
349 |
if (-1 == scsi_req_parse(&r->req, cmd)) { |
350 |
BADF("Unsupported command length, command %x\n", cmd[0]); |
351 |
scsi_remove_request(r); |
352 |
return 0; |
353 |
} |
354 |
scsi_req_fixup(&r->req); |
355 |
|
356 |
DPRINTF("Command: lun=%d tag=0x%x len %zd data=0x%02x", lun, tag,
|
357 |
r->req.cmd.xfer, cmd[0]);
|
358 |
|
359 |
#ifdef DEBUG_SCSI
|
360 |
{ |
361 |
int i;
|
362 |
for (i = 1; i < r->req.cmd.len; i++) { |
363 |
printf(" 0x%02x", cmd[i]);
|
364 |
} |
365 |
printf("\n");
|
366 |
} |
367 |
#endif
|
368 |
|
369 |
if (r->req.cmd.xfer == 0) { |
370 |
if (r->buf != NULL) |
371 |
qemu_free(r->buf); |
372 |
r->buflen = 0;
|
373 |
r->buf = NULL;
|
374 |
ret = execute_command(s->bs, r, SG_DXFER_NONE, scsi_command_complete); |
375 |
if (ret == -1) { |
376 |
scsi_command_complete(r, -EINVAL); |
377 |
return 0; |
378 |
} |
379 |
return 0; |
380 |
} |
381 |
|
382 |
if (r->buflen != r->req.cmd.xfer) {
|
383 |
if (r->buf != NULL) |
384 |
qemu_free(r->buf); |
385 |
r->buf = qemu_malloc(r->req.cmd.xfer); |
386 |
r->buflen = r->req.cmd.xfer; |
387 |
} |
388 |
|
389 |
memset(r->buf, 0, r->buflen);
|
390 |
r->len = r->req.cmd.xfer; |
391 |
if (r->req.cmd.mode == SCSI_XFER_TO_DEV) {
|
392 |
r->len = 0;
|
393 |
return -r->req.cmd.xfer;
|
394 |
} |
395 |
|
396 |
return r->req.cmd.xfer;
|
397 |
} |
398 |
|
399 |
static int get_blocksize(BlockDriverState *bdrv) |
400 |
{ |
401 |
uint8_t cmd[10];
|
402 |
uint8_t buf[8];
|
403 |
uint8_t sensebuf[8];
|
404 |
sg_io_hdr_t io_header; |
405 |
int ret;
|
406 |
|
407 |
memset(cmd, 0, sizeof(cmd)); |
408 |
memset(buf, 0, sizeof(buf)); |
409 |
cmd[0] = READ_CAPACITY;
|
410 |
|
411 |
memset(&io_header, 0, sizeof(io_header)); |
412 |
io_header.interface_id = 'S';
|
413 |
io_header.dxfer_direction = SG_DXFER_FROM_DEV; |
414 |
io_header.dxfer_len = sizeof(buf);
|
415 |
io_header.dxferp = buf; |
416 |
io_header.cmdp = cmd; |
417 |
io_header.cmd_len = sizeof(cmd);
|
418 |
io_header.mx_sb_len = sizeof(sensebuf);
|
419 |
io_header.sbp = sensebuf; |
420 |
io_header.timeout = 6000; /* XXX */ |
421 |
|
422 |
ret = bdrv_ioctl(bdrv, SG_IO, &io_header); |
423 |
if (ret < 0) |
424 |
return -1; |
425 |
|
426 |
return (buf[4] << 24) | (buf[5] << 16) | (buf[6] << 8) | buf[7]; |
427 |
} |
428 |
|
429 |
static int get_stream_blocksize(BlockDriverState *bdrv) |
430 |
{ |
431 |
uint8_t cmd[6];
|
432 |
uint8_t buf[12];
|
433 |
uint8_t sensebuf[8];
|
434 |
sg_io_hdr_t io_header; |
435 |
int ret;
|
436 |
|
437 |
memset(cmd, 0, sizeof(cmd)); |
438 |
memset(buf, 0, sizeof(buf)); |
439 |
cmd[0] = MODE_SENSE;
|
440 |
cmd[4] = sizeof(buf); |
441 |
|
442 |
memset(&io_header, 0, sizeof(io_header)); |
443 |
io_header.interface_id = 'S';
|
444 |
io_header.dxfer_direction = SG_DXFER_FROM_DEV; |
445 |
io_header.dxfer_len = sizeof(buf);
|
446 |
io_header.dxferp = buf; |
447 |
io_header.cmdp = cmd; |
448 |
io_header.cmd_len = sizeof(cmd);
|
449 |
io_header.mx_sb_len = sizeof(sensebuf);
|
450 |
io_header.sbp = sensebuf; |
451 |
io_header.timeout = 6000; /* XXX */ |
452 |
|
453 |
ret = bdrv_ioctl(bdrv, SG_IO, &io_header); |
454 |
if (ret < 0) |
455 |
return -1; |
456 |
|
457 |
return (buf[9] << 16) | (buf[10] << 8) | buf[11]; |
458 |
} |
459 |
|
460 |
static void scsi_generic_purge_requests(SCSIGenericState *s) |
461 |
{ |
462 |
SCSIGenericReq *r; |
463 |
|
464 |
while (!QTAILQ_EMPTY(&s->qdev.requests)) {
|
465 |
r = DO_UPCAST(SCSIGenericReq, req, QTAILQ_FIRST(&s->qdev.requests)); |
466 |
if (r->req.aiocb) {
|
467 |
bdrv_aio_cancel(r->req.aiocb); |
468 |
} |
469 |
scsi_remove_request(r); |
470 |
} |
471 |
} |
472 |
|
473 |
static void scsi_generic_reset(DeviceState *dev) |
474 |
{ |
475 |
SCSIGenericState *s = DO_UPCAST(SCSIGenericState, qdev.qdev, dev); |
476 |
|
477 |
scsi_generic_purge_requests(s); |
478 |
} |
479 |
|
480 |
static void scsi_destroy(SCSIDevice *d) |
481 |
{ |
482 |
SCSIGenericState *s = DO_UPCAST(SCSIGenericState, qdev, d); |
483 |
|
484 |
scsi_generic_purge_requests(s); |
485 |
blockdev_mark_auto_del(s->qdev.conf.bs); |
486 |
} |
487 |
|
488 |
static int scsi_generic_initfn(SCSIDevice *dev) |
489 |
{ |
490 |
SCSIGenericState *s = DO_UPCAST(SCSIGenericState, qdev, dev); |
491 |
int sg_version;
|
492 |
struct sg_scsi_id scsiid;
|
493 |
|
494 |
if (!s->qdev.conf.bs) {
|
495 |
error_report("scsi-generic: drive property not set");
|
496 |
return -1; |
497 |
} |
498 |
s->bs = s->qdev.conf.bs; |
499 |
|
500 |
/* check we are really using a /dev/sg* file */
|
501 |
if (!bdrv_is_sg(s->bs)) {
|
502 |
error_report("scsi-generic: not /dev/sg*");
|
503 |
return -1; |
504 |
} |
505 |
|
506 |
if (bdrv_get_on_error(s->bs, 0) != BLOCK_ERR_STOP_ENOSPC) { |
507 |
error_report("Device doesn't support drive option werror");
|
508 |
return -1; |
509 |
} |
510 |
if (bdrv_get_on_error(s->bs, 1) != BLOCK_ERR_REPORT) { |
511 |
error_report("Device doesn't support drive option rerror");
|
512 |
return -1; |
513 |
} |
514 |
|
515 |
/* check we are using a driver managing SG_IO (version 3 and after */
|
516 |
if (bdrv_ioctl(s->bs, SG_GET_VERSION_NUM, &sg_version) < 0 || |
517 |
sg_version < 30000) {
|
518 |
error_report("scsi-generic: scsi generic interface too old");
|
519 |
return -1; |
520 |
} |
521 |
|
522 |
/* get LUN of the /dev/sg? */
|
523 |
if (bdrv_ioctl(s->bs, SG_GET_SCSI_ID, &scsiid)) {
|
524 |
error_report("scsi-generic: SG_GET_SCSI_ID ioctl failed");
|
525 |
return -1; |
526 |
} |
527 |
|
528 |
/* define device state */
|
529 |
s->lun = scsiid.lun; |
530 |
DPRINTF("LUN %d\n", s->lun);
|
531 |
s->qdev.type = scsiid.scsi_type; |
532 |
DPRINTF("device type %d\n", s->qdev.type);
|
533 |
if (s->qdev.type == TYPE_TAPE) {
|
534 |
s->qdev.blocksize = get_stream_blocksize(s->bs); |
535 |
if (s->qdev.blocksize == -1) |
536 |
s->qdev.blocksize = 0;
|
537 |
} else {
|
538 |
s->qdev.blocksize = get_blocksize(s->bs); |
539 |
/* removable media returns 0 if not present */
|
540 |
if (s->qdev.blocksize <= 0) { |
541 |
if (s->qdev.type == TYPE_ROM || s->qdev.type == TYPE_WORM)
|
542 |
s->qdev.blocksize = 2048;
|
543 |
else
|
544 |
s->qdev.blocksize = 512;
|
545 |
} |
546 |
} |
547 |
DPRINTF("block size %d\n", s->qdev.blocksize);
|
548 |
s->driver_status = 0;
|
549 |
memset(s->sensebuf, 0, sizeof(s->sensebuf)); |
550 |
bdrv_set_removable(s->bs, 0);
|
551 |
return 0; |
552 |
} |
553 |
|
554 |
static SCSIDeviceInfo scsi_generic_info = {
|
555 |
.qdev.name = "scsi-generic",
|
556 |
.qdev.desc = "pass through generic scsi device (/dev/sg*)",
|
557 |
.qdev.size = sizeof(SCSIGenericState),
|
558 |
.qdev.reset = scsi_generic_reset, |
559 |
.init = scsi_generic_initfn, |
560 |
.destroy = scsi_destroy, |
561 |
.send_command = scsi_send_command, |
562 |
.read_data = scsi_read_data, |
563 |
.write_data = scsi_write_data, |
564 |
.cancel_io = scsi_cancel_io, |
565 |
.get_buf = scsi_get_buf, |
566 |
.qdev.props = (Property[]) { |
567 |
DEFINE_BLOCK_PROPERTIES(SCSIGenericState, qdev.conf), |
568 |
DEFINE_PROP_END_OF_LIST(), |
569 |
}, |
570 |
}; |
571 |
|
572 |
static void scsi_generic_register_devices(void) |
573 |
{ |
574 |
scsi_qdev_register(&scsi_generic_info); |
575 |
} |
576 |
device_init(scsi_generic_register_devices) |
577 |
|
578 |
#endif /* __linux__ */ |