root / hw / scsi-generic.c @ d4970b07
History | View | Annotate | Download (15.4 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 void scsi_set_sense(SCSIGenericState *s, SCSISense sense) |
70 |
{ |
71 |
s->senselen = scsi_build_sense(sense, s->sensebuf, SCSI_SENSE_BUF_SIZE, 0);
|
72 |
s->driver_status = SG_ERR_DRIVER_SENSE; |
73 |
} |
74 |
|
75 |
static void scsi_clear_sense(SCSIGenericState *s) |
76 |
{ |
77 |
memset(s->sensebuf, 0, SCSI_SENSE_BUF_SIZE);
|
78 |
s->senselen = 0;
|
79 |
s->driver_status = 0;
|
80 |
} |
81 |
|
82 |
static int scsi_get_sense(SCSIRequest *req, uint8_t *outbuf, int len) |
83 |
{ |
84 |
SCSIGenericState *s = DO_UPCAST(SCSIGenericState, qdev, req->dev); |
85 |
int size = SCSI_SENSE_BUF_SIZE;
|
86 |
|
87 |
if (!(s->driver_status & SG_ERR_DRIVER_SENSE)) {
|
88 |
size = scsi_build_sense(SENSE_CODE(NO_SENSE), s->sensebuf, |
89 |
SCSI_SENSE_BUF_SIZE, 0);
|
90 |
} |
91 |
if (size > len) {
|
92 |
size = len; |
93 |
} |
94 |
memcpy(outbuf, s->sensebuf, size); |
95 |
|
96 |
return size;
|
97 |
} |
98 |
|
99 |
static SCSIRequest *scsi_new_request(SCSIDevice *d, uint32_t tag, uint32_t lun)
|
100 |
{ |
101 |
SCSIRequest *req; |
102 |
|
103 |
req = scsi_req_alloc(sizeof(SCSIGenericReq), d, tag, lun);
|
104 |
return req;
|
105 |
} |
106 |
|
107 |
static void scsi_free_request(SCSIRequest *req) |
108 |
{ |
109 |
SCSIGenericReq *r = DO_UPCAST(SCSIGenericReq, req, req); |
110 |
|
111 |
qemu_free(r->buf); |
112 |
} |
113 |
|
114 |
/* Helper function for command completion. */
|
115 |
static void scsi_command_complete(void *opaque, int ret) |
116 |
{ |
117 |
SCSIGenericReq *r = (SCSIGenericReq *)opaque; |
118 |
SCSIGenericState *s = DO_UPCAST(SCSIGenericState, qdev, r->req.dev); |
119 |
|
120 |
r->req.aiocb = NULL;
|
121 |
s->driver_status = r->io_header.driver_status; |
122 |
if (s->driver_status & SG_ERR_DRIVER_SENSE)
|
123 |
s->senselen = r->io_header.sb_len_wr; |
124 |
|
125 |
if (ret != 0) { |
126 |
switch (ret) {
|
127 |
case -EDOM:
|
128 |
r->req.status = TASK_SET_FULL; |
129 |
break;
|
130 |
case -EINVAL:
|
131 |
r->req.status = CHECK_CONDITION; |
132 |
scsi_set_sense(s, SENSE_CODE(INVALID_FIELD)); |
133 |
break;
|
134 |
case -ENOMEM:
|
135 |
r->req.status = CHECK_CONDITION; |
136 |
scsi_set_sense(s, SENSE_CODE(TARGET_FAILURE)); |
137 |
break;
|
138 |
default:
|
139 |
r->req.status = CHECK_CONDITION; |
140 |
scsi_set_sense(s, SENSE_CODE(IO_ERROR)); |
141 |
break;
|
142 |
} |
143 |
} else {
|
144 |
if (s->driver_status & SG_ERR_DRIVER_TIMEOUT) {
|
145 |
r->req.status = BUSY; |
146 |
BADF("Driver Timeout\n");
|
147 |
} else if (r->io_header.status) |
148 |
r->req.status = r->io_header.status; |
149 |
else if (s->driver_status & SG_ERR_DRIVER_SENSE) |
150 |
r->req.status = CHECK_CONDITION; |
151 |
else
|
152 |
r->req.status = GOOD; |
153 |
} |
154 |
DPRINTF("Command complete 0x%p tag=0x%x status=%d\n",
|
155 |
r, r->req.tag, r->req.status); |
156 |
|
157 |
scsi_req_complete(&r->req); |
158 |
} |
159 |
|
160 |
/* Cancel a pending data transfer. */
|
161 |
static void scsi_cancel_io(SCSIRequest *req) |
162 |
{ |
163 |
SCSIGenericReq *r = DO_UPCAST(SCSIGenericReq, req, req); |
164 |
|
165 |
DPRINTF("Cancel tag=0x%x\n", req->tag);
|
166 |
if (r->req.aiocb) {
|
167 |
bdrv_aio_cancel(r->req.aiocb); |
168 |
} |
169 |
r->req.aiocb = NULL;
|
170 |
} |
171 |
|
172 |
static int execute_command(BlockDriverState *bdrv, |
173 |
SCSIGenericReq *r, int direction,
|
174 |
BlockDriverCompletionFunc *complete) |
175 |
{ |
176 |
SCSIGenericState *s = DO_UPCAST(SCSIGenericState, qdev, r->req.dev); |
177 |
|
178 |
r->io_header.interface_id = 'S';
|
179 |
r->io_header.dxfer_direction = direction; |
180 |
r->io_header.dxferp = r->buf; |
181 |
r->io_header.dxfer_len = r->buflen; |
182 |
r->io_header.cmdp = r->req.cmd.buf; |
183 |
r->io_header.cmd_len = r->req.cmd.len; |
184 |
r->io_header.mx_sb_len = sizeof(s->sensebuf);
|
185 |
r->io_header.sbp = s->sensebuf; |
186 |
r->io_header.timeout = MAX_UINT; |
187 |
r->io_header.usr_ptr = r; |
188 |
r->io_header.flags |= SG_FLAG_DIRECT_IO; |
189 |
|
190 |
r->req.aiocb = bdrv_aio_ioctl(bdrv, SG_IO, &r->io_header, complete, r); |
191 |
if (r->req.aiocb == NULL) { |
192 |
BADF("execute_command: read failed !\n");
|
193 |
return -ENOMEM;
|
194 |
} |
195 |
|
196 |
return 0; |
197 |
} |
198 |
|
199 |
static void scsi_read_complete(void * opaque, int ret) |
200 |
{ |
201 |
SCSIGenericReq *r = (SCSIGenericReq *)opaque; |
202 |
int len;
|
203 |
|
204 |
r->req.aiocb = NULL;
|
205 |
if (ret) {
|
206 |
DPRINTF("IO error ret %d\n", ret);
|
207 |
scsi_command_complete(r, ret); |
208 |
return;
|
209 |
} |
210 |
len = r->io_header.dxfer_len - r->io_header.resid; |
211 |
DPRINTF("Data ready tag=0x%x len=%d\n", r->req.tag, len);
|
212 |
|
213 |
r->len = -1;
|
214 |
if (len == 0) { |
215 |
scsi_command_complete(r, 0);
|
216 |
} else {
|
217 |
scsi_req_data(&r->req, len); |
218 |
} |
219 |
} |
220 |
|
221 |
/* Read more data from scsi device into buffer. */
|
222 |
static void scsi_read_data(SCSIRequest *req) |
223 |
{ |
224 |
SCSIGenericReq *r = DO_UPCAST(SCSIGenericReq, req, req); |
225 |
SCSIGenericState *s = DO_UPCAST(SCSIGenericState, qdev, r->req.dev); |
226 |
int ret;
|
227 |
|
228 |
DPRINTF("scsi_read_data 0x%x\n", req->tag);
|
229 |
if (r->len == -1) { |
230 |
scsi_command_complete(r, 0);
|
231 |
return;
|
232 |
} |
233 |
|
234 |
if (r->req.cmd.buf[0] == REQUEST_SENSE && s->driver_status & SG_ERR_DRIVER_SENSE) |
235 |
{ |
236 |
s->senselen = MIN(r->len, s->senselen); |
237 |
memcpy(r->buf, s->sensebuf, s->senselen); |
238 |
r->io_header.driver_status = 0;
|
239 |
r->io_header.status = 0;
|
240 |
r->io_header.dxfer_len = s->senselen; |
241 |
r->len = -1;
|
242 |
DPRINTF("Data ready tag=0x%x len=%d\n", r->req.tag, s->senselen);
|
243 |
DPRINTF("Sense: %d %d %d %d %d %d %d %d\n",
|
244 |
r->buf[0], r->buf[1], r->buf[2], r->buf[3], |
245 |
r->buf[4], r->buf[5], r->buf[6], r->buf[7]); |
246 |
scsi_req_data(&r->req, s->senselen); |
247 |
/* Clear sensebuf after REQUEST_SENSE */
|
248 |
scsi_clear_sense(s); |
249 |
return;
|
250 |
} |
251 |
|
252 |
ret = execute_command(s->bs, r, SG_DXFER_FROM_DEV, scsi_read_complete); |
253 |
if (ret < 0) { |
254 |
scsi_command_complete(r, ret); |
255 |
return;
|
256 |
} |
257 |
} |
258 |
|
259 |
static void scsi_write_complete(void * opaque, int ret) |
260 |
{ |
261 |
SCSIGenericReq *r = (SCSIGenericReq *)opaque; |
262 |
SCSIGenericState *s = DO_UPCAST(SCSIGenericState, qdev, r->req.dev); |
263 |
|
264 |
DPRINTF("scsi_write_complete() ret = %d\n", ret);
|
265 |
r->req.aiocb = NULL;
|
266 |
if (ret) {
|
267 |
DPRINTF("IO error\n");
|
268 |
scsi_command_complete(r, ret); |
269 |
return;
|
270 |
} |
271 |
|
272 |
if (r->req.cmd.buf[0] == MODE_SELECT && r->req.cmd.buf[4] == 12 && |
273 |
s->qdev.type == TYPE_TAPE) { |
274 |
s->qdev.blocksize = (r->buf[9] << 16) | (r->buf[10] << 8) | r->buf[11]; |
275 |
DPRINTF("block size %d\n", s->qdev.blocksize);
|
276 |
} |
277 |
|
278 |
scsi_command_complete(r, ret); |
279 |
} |
280 |
|
281 |
/* Write data to a scsi device. Returns nonzero on failure.
|
282 |
The transfer may complete asynchronously. */
|
283 |
static void scsi_write_data(SCSIRequest *req) |
284 |
{ |
285 |
SCSIGenericState *s = DO_UPCAST(SCSIGenericState, qdev, req->dev); |
286 |
SCSIGenericReq *r = DO_UPCAST(SCSIGenericReq, req, req); |
287 |
int ret;
|
288 |
|
289 |
DPRINTF("scsi_write_data 0x%x\n", req->tag);
|
290 |
if (r->len == 0) { |
291 |
r->len = r->buflen; |
292 |
scsi_req_data(&r->req, r->len); |
293 |
return;
|
294 |
} |
295 |
|
296 |
ret = execute_command(s->bs, r, SG_DXFER_TO_DEV, scsi_write_complete); |
297 |
if (ret < 0) { |
298 |
scsi_command_complete(r, ret); |
299 |
} |
300 |
} |
301 |
|
302 |
/* Return a pointer to the data buffer. */
|
303 |
static uint8_t *scsi_get_buf(SCSIRequest *req)
|
304 |
{ |
305 |
SCSIGenericReq *r = DO_UPCAST(SCSIGenericReq, req, req); |
306 |
|
307 |
return r->buf;
|
308 |
} |
309 |
|
310 |
static void scsi_req_fixup(SCSIRequest *req) |
311 |
{ |
312 |
switch(req->cmd.buf[0]) { |
313 |
case WRITE_10:
|
314 |
req->cmd.buf[1] &= ~0x08; /* disable FUA */ |
315 |
break;
|
316 |
case READ_10:
|
317 |
req->cmd.buf[1] &= ~0x08; /* disable FUA */ |
318 |
break;
|
319 |
case REWIND:
|
320 |
case START_STOP:
|
321 |
if (req->dev->type == TYPE_TAPE) {
|
322 |
/* force IMMED, otherwise qemu waits end of command */
|
323 |
req->cmd.buf[1] = 0x01; |
324 |
} |
325 |
break;
|
326 |
} |
327 |
} |
328 |
|
329 |
/* Execute a scsi command. Returns the length of the data expected by the
|
330 |
command. This will be Positive for data transfers from the device
|
331 |
(eg. disk reads), negative for transfers to the device (eg. disk writes),
|
332 |
and zero if the command does not transfer any data. */
|
333 |
|
334 |
static int32_t scsi_send_command(SCSIRequest *req, uint8_t *cmd)
|
335 |
{ |
336 |
SCSIGenericState *s = DO_UPCAST(SCSIGenericState, qdev, req->dev); |
337 |
SCSIGenericReq *r = DO_UPCAST(SCSIGenericReq, req, req); |
338 |
int ret;
|
339 |
|
340 |
if (cmd[0] != REQUEST_SENSE && req->lun != s->lun) { |
341 |
DPRINTF("Unimplemented LUN %d\n", req->lun);
|
342 |
scsi_set_sense(s, SENSE_CODE(LUN_NOT_SUPPORTED)); |
343 |
r->req.status = CHECK_CONDITION; |
344 |
scsi_req_complete(&r->req); |
345 |
return 0; |
346 |
} |
347 |
|
348 |
if (-1 == scsi_req_parse(&r->req, cmd)) { |
349 |
BADF("Unsupported command length, command %x\n", cmd[0]); |
350 |
scsi_command_complete(r, -EINVAL); |
351 |
return 0; |
352 |
} |
353 |
scsi_req_fixup(&r->req); |
354 |
|
355 |
DPRINTF("Command: lun=%d tag=0x%x len %zd data=0x%02x", lun, tag,
|
356 |
r->req.cmd.xfer, cmd[0]);
|
357 |
|
358 |
#ifdef DEBUG_SCSI
|
359 |
{ |
360 |
int i;
|
361 |
for (i = 1; i < r->req.cmd.len; i++) { |
362 |
printf(" 0x%02x", cmd[i]);
|
363 |
} |
364 |
printf("\n");
|
365 |
} |
366 |
#endif
|
367 |
|
368 |
if (r->req.cmd.xfer == 0) { |
369 |
if (r->buf != NULL) |
370 |
qemu_free(r->buf); |
371 |
r->buflen = 0;
|
372 |
r->buf = NULL;
|
373 |
ret = execute_command(s->bs, r, SG_DXFER_NONE, scsi_command_complete); |
374 |
if (ret < 0) { |
375 |
scsi_command_complete(r, ret); |
376 |
return 0; |
377 |
} |
378 |
return 0; |
379 |
} |
380 |
|
381 |
if (r->buflen != r->req.cmd.xfer) {
|
382 |
if (r->buf != NULL) |
383 |
qemu_free(r->buf); |
384 |
r->buf = qemu_malloc(r->req.cmd.xfer); |
385 |
r->buflen = r->req.cmd.xfer; |
386 |
} |
387 |
|
388 |
memset(r->buf, 0, r->buflen);
|
389 |
r->len = r->req.cmd.xfer; |
390 |
if (r->req.cmd.mode == SCSI_XFER_TO_DEV) {
|
391 |
r->len = 0;
|
392 |
return -r->req.cmd.xfer;
|
393 |
} else {
|
394 |
return r->req.cmd.xfer;
|
395 |
} |
396 |
} |
397 |
|
398 |
static int get_blocksize(BlockDriverState *bdrv) |
399 |
{ |
400 |
uint8_t cmd[10];
|
401 |
uint8_t buf[8];
|
402 |
uint8_t sensebuf[8];
|
403 |
sg_io_hdr_t io_header; |
404 |
int ret;
|
405 |
|
406 |
memset(cmd, 0, sizeof(cmd)); |
407 |
memset(buf, 0, sizeof(buf)); |
408 |
cmd[0] = READ_CAPACITY;
|
409 |
|
410 |
memset(&io_header, 0, sizeof(io_header)); |
411 |
io_header.interface_id = 'S';
|
412 |
io_header.dxfer_direction = SG_DXFER_FROM_DEV; |
413 |
io_header.dxfer_len = sizeof(buf);
|
414 |
io_header.dxferp = buf; |
415 |
io_header.cmdp = cmd; |
416 |
io_header.cmd_len = sizeof(cmd);
|
417 |
io_header.mx_sb_len = sizeof(sensebuf);
|
418 |
io_header.sbp = sensebuf; |
419 |
io_header.timeout = 6000; /* XXX */ |
420 |
|
421 |
ret = bdrv_ioctl(bdrv, SG_IO, &io_header); |
422 |
if (ret < 0) |
423 |
return -1; |
424 |
|
425 |
return (buf[4] << 24) | (buf[5] << 16) | (buf[6] << 8) | buf[7]; |
426 |
} |
427 |
|
428 |
static int get_stream_blocksize(BlockDriverState *bdrv) |
429 |
{ |
430 |
uint8_t cmd[6];
|
431 |
uint8_t buf[12];
|
432 |
uint8_t sensebuf[8];
|
433 |
sg_io_hdr_t io_header; |
434 |
int ret;
|
435 |
|
436 |
memset(cmd, 0, sizeof(cmd)); |
437 |
memset(buf, 0, sizeof(buf)); |
438 |
cmd[0] = MODE_SENSE;
|
439 |
cmd[4] = sizeof(buf); |
440 |
|
441 |
memset(&io_header, 0, sizeof(io_header)); |
442 |
io_header.interface_id = 'S';
|
443 |
io_header.dxfer_direction = SG_DXFER_FROM_DEV; |
444 |
io_header.dxfer_len = sizeof(buf);
|
445 |
io_header.dxferp = buf; |
446 |
io_header.cmdp = cmd; |
447 |
io_header.cmd_len = sizeof(cmd);
|
448 |
io_header.mx_sb_len = sizeof(sensebuf);
|
449 |
io_header.sbp = sensebuf; |
450 |
io_header.timeout = 6000; /* XXX */ |
451 |
|
452 |
ret = bdrv_ioctl(bdrv, SG_IO, &io_header); |
453 |
if (ret < 0) |
454 |
return -1; |
455 |
|
456 |
return (buf[9] << 16) | (buf[10] << 8) | buf[11]; |
457 |
} |
458 |
|
459 |
static void scsi_generic_reset(DeviceState *dev) |
460 |
{ |
461 |
SCSIGenericState *s = DO_UPCAST(SCSIGenericState, qdev.qdev, dev); |
462 |
|
463 |
scsi_device_purge_requests(&s->qdev); |
464 |
} |
465 |
|
466 |
static void scsi_destroy(SCSIDevice *d) |
467 |
{ |
468 |
SCSIGenericState *s = DO_UPCAST(SCSIGenericState, qdev, d); |
469 |
|
470 |
scsi_device_purge_requests(&s->qdev); |
471 |
blockdev_mark_auto_del(s->qdev.conf.bs); |
472 |
} |
473 |
|
474 |
static int scsi_generic_initfn(SCSIDevice *dev) |
475 |
{ |
476 |
SCSIGenericState *s = DO_UPCAST(SCSIGenericState, qdev, dev); |
477 |
int sg_version;
|
478 |
struct sg_scsi_id scsiid;
|
479 |
|
480 |
if (!s->qdev.conf.bs) {
|
481 |
error_report("scsi-generic: drive property not set");
|
482 |
return -1; |
483 |
} |
484 |
s->bs = s->qdev.conf.bs; |
485 |
|
486 |
/* check we are really using a /dev/sg* file */
|
487 |
if (!bdrv_is_sg(s->bs)) {
|
488 |
error_report("scsi-generic: not /dev/sg*");
|
489 |
return -1; |
490 |
} |
491 |
|
492 |
if (bdrv_get_on_error(s->bs, 0) != BLOCK_ERR_STOP_ENOSPC) { |
493 |
error_report("Device doesn't support drive option werror");
|
494 |
return -1; |
495 |
} |
496 |
if (bdrv_get_on_error(s->bs, 1) != BLOCK_ERR_REPORT) { |
497 |
error_report("Device doesn't support drive option rerror");
|
498 |
return -1; |
499 |
} |
500 |
|
501 |
/* check we are using a driver managing SG_IO (version 3 and after */
|
502 |
if (bdrv_ioctl(s->bs, SG_GET_VERSION_NUM, &sg_version) < 0 || |
503 |
sg_version < 30000) {
|
504 |
error_report("scsi-generic: scsi generic interface too old");
|
505 |
return -1; |
506 |
} |
507 |
|
508 |
/* get LUN of the /dev/sg? */
|
509 |
if (bdrv_ioctl(s->bs, SG_GET_SCSI_ID, &scsiid)) {
|
510 |
error_report("scsi-generic: SG_GET_SCSI_ID ioctl failed");
|
511 |
return -1; |
512 |
} |
513 |
|
514 |
/* define device state */
|
515 |
s->lun = scsiid.lun; |
516 |
DPRINTF("LUN %d\n", s->lun);
|
517 |
s->qdev.type = scsiid.scsi_type; |
518 |
DPRINTF("device type %d\n", s->qdev.type);
|
519 |
if (s->qdev.type == TYPE_TAPE) {
|
520 |
s->qdev.blocksize = get_stream_blocksize(s->bs); |
521 |
if (s->qdev.blocksize == -1) |
522 |
s->qdev.blocksize = 0;
|
523 |
} else {
|
524 |
s->qdev.blocksize = get_blocksize(s->bs); |
525 |
/* removable media returns 0 if not present */
|
526 |
if (s->qdev.blocksize <= 0) { |
527 |
if (s->qdev.type == TYPE_ROM || s->qdev.type == TYPE_WORM)
|
528 |
s->qdev.blocksize = 2048;
|
529 |
else
|
530 |
s->qdev.blocksize = 512;
|
531 |
} |
532 |
} |
533 |
DPRINTF("block size %d\n", s->qdev.blocksize);
|
534 |
s->driver_status = 0;
|
535 |
memset(s->sensebuf, 0, sizeof(s->sensebuf)); |
536 |
bdrv_set_removable(s->bs, 0);
|
537 |
return 0; |
538 |
} |
539 |
|
540 |
static SCSIDeviceInfo scsi_generic_info = {
|
541 |
.qdev.name = "scsi-generic",
|
542 |
.qdev.desc = "pass through generic scsi device (/dev/sg*)",
|
543 |
.qdev.size = sizeof(SCSIGenericState),
|
544 |
.qdev.reset = scsi_generic_reset, |
545 |
.init = scsi_generic_initfn, |
546 |
.destroy = scsi_destroy, |
547 |
.alloc_req = scsi_new_request, |
548 |
.free_req = scsi_free_request, |
549 |
.send_command = scsi_send_command, |
550 |
.read_data = scsi_read_data, |
551 |
.write_data = scsi_write_data, |
552 |
.cancel_io = scsi_cancel_io, |
553 |
.get_buf = scsi_get_buf, |
554 |
.get_sense = scsi_get_sense, |
555 |
.qdev.props = (Property[]) { |
556 |
DEFINE_BLOCK_PROPERTIES(SCSIGenericState, qdev.conf), |
557 |
DEFINE_PROP_END_OF_LIST(), |
558 |
}, |
559 |
}; |
560 |
|
561 |
static void scsi_generic_register_devices(void) |
562 |
{ |
563 |
scsi_qdev_register(&scsi_generic_info); |
564 |
} |
565 |
device_init(scsi_generic_register_devices) |
566 |
|
567 |
#endif /* __linux__ */ |