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Commit | Line | Data |
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2cc977e2 TS |
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 | * | |
8e31bf38 | 10 | * This code is licensed under the LGPL. |
2cc977e2 TS |
11 | * |
12 | */ | |
13 | ||
14 | #include "qemu-common.h" | |
1de7afc9 | 15 | #include "qemu/error-report.h" |
0d09e41a | 16 | #include "hw/scsi/scsi.h" |
9c17d615 | 17 | #include "sysemu/blockdev.h" |
2cc977e2 | 18 | |
d52affa7 | 19 | #ifdef __linux__ |
2cc977e2 TS |
20 | |
21 | //#define DEBUG_SCSI | |
22 | ||
23 | #ifdef DEBUG_SCSI | |
001faf32 BS |
24 | #define DPRINTF(fmt, ...) \ |
25 | do { printf("scsi-generic: " fmt , ## __VA_ARGS__); } while (0) | |
2cc977e2 | 26 | #else |
001faf32 | 27 | #define DPRINTF(fmt, ...) do {} while(0) |
2cc977e2 TS |
28 | #endif |
29 | ||
001faf32 BS |
30 | #define BADF(fmt, ...) \ |
31 | do { fprintf(stderr, "scsi-generic: " fmt , ## __VA_ARGS__); } while (0) | |
2cc977e2 TS |
32 | |
33 | #include <stdio.h> | |
34 | #include <sys/types.h> | |
35 | #include <sys/stat.h> | |
36 | #include <unistd.h> | |
37 | #include <scsi/sg.h> | |
0d09e41a | 38 | #include "block/scsi.h" |
2cc977e2 | 39 | |
a9dd6843 | 40 | #define SCSI_SENSE_BUF_SIZE 96 |
2cc977e2 | 41 | |
a3b16e71 PB |
42 | #define SG_ERR_DRIVER_TIMEOUT 0x06 |
43 | #define SG_ERR_DRIVER_SENSE 0x08 | |
44 | ||
45 | #define SG_ERR_DID_OK 0x00 | |
46 | #define SG_ERR_DID_NO_CONNECT 0x01 | |
47 | #define SG_ERR_DID_BUS_BUSY 0x02 | |
48 | #define SG_ERR_DID_TIME_OUT 0x03 | |
2cc977e2 TS |
49 | |
50 | #ifndef MAX_UINT | |
51 | #define MAX_UINT ((unsigned int)-1) | |
52 | #endif | |
53 | ||
4c41d2ef GH |
54 | typedef struct SCSIGenericReq { |
55 | SCSIRequest req; | |
2cc977e2 TS |
56 | uint8_t *buf; |
57 | int buflen; | |
58 | int len; | |
59 | sg_io_hdr_t io_header; | |
4c41d2ef | 60 | } SCSIGenericReq; |
2cc977e2 | 61 | |
56b1fc48 PB |
62 | static void scsi_generic_save_request(QEMUFile *f, SCSIRequest *req) |
63 | { | |
64 | SCSIGenericReq *r = DO_UPCAST(SCSIGenericReq, req, req); | |
65 | ||
66 | qemu_put_sbe32s(f, &r->buflen); | |
67 | if (r->buflen && r->req.cmd.mode == SCSI_XFER_TO_DEV) { | |
68 | assert(!r->req.sg); | |
69 | qemu_put_buffer(f, r->buf, r->req.cmd.xfer); | |
70 | } | |
71 | } | |
72 | ||
73 | static void scsi_generic_load_request(QEMUFile *f, SCSIRequest *req) | |
74 | { | |
75 | SCSIGenericReq *r = DO_UPCAST(SCSIGenericReq, req, req); | |
76 | ||
77 | qemu_get_sbe32s(f, &r->buflen); | |
78 | if (r->buflen && r->req.cmd.mode == SCSI_XFER_TO_DEV) { | |
79 | assert(!r->req.sg); | |
80 | qemu_get_buffer(f, r->buf, r->req.cmd.xfer); | |
81 | } | |
82 | } | |
83 | ||
ad2d30f7 | 84 | static void scsi_free_request(SCSIRequest *req) |
2cc977e2 | 85 | { |
ad2d30f7 PB |
86 | SCSIGenericReq *r = DO_UPCAST(SCSIGenericReq, req, req); |
87 | ||
7267c094 | 88 | g_free(r->buf); |
2cc977e2 TS |
89 | } |
90 | ||
2cc977e2 TS |
91 | /* Helper function for command completion. */ |
92 | static void scsi_command_complete(void *opaque, int ret) | |
93 | { | |
682a9b21 | 94 | int status; |
4c41d2ef | 95 | SCSIGenericReq *r = (SCSIGenericReq *)opaque; |
2cc977e2 | 96 | |
d33e0ce2 | 97 | r->req.aiocb = NULL; |
a3b16e71 | 98 | if (r->io_header.driver_status & SG_ERR_DRIVER_SENSE) { |
b45ef674 | 99 | r->req.sense_len = r->io_header.sb_len_wr; |
a3b16e71 | 100 | } |
89c0f643 | 101 | |
a1f0cce2 HR |
102 | if (ret != 0) { |
103 | switch (ret) { | |
2e7cc4d6 | 104 | case -EDOM: |
682a9b21 | 105 | status = TASK_SET_FULL; |
2e7cc4d6 | 106 | break; |
a1f0cce2 | 107 | case -ENOMEM: |
682a9b21 | 108 | status = CHECK_CONDITION; |
b45ef674 | 109 | scsi_req_build_sense(&r->req, SENSE_CODE(TARGET_FAILURE)); |
a1f0cce2 HR |
110 | break; |
111 | default: | |
682a9b21 | 112 | status = CHECK_CONDITION; |
b45ef674 | 113 | scsi_req_build_sense(&r->req, SENSE_CODE(IO_ERROR)); |
a1f0cce2 HR |
114 | break; |
115 | } | |
116 | } else { | |
a3b16e71 PB |
117 | if (r->io_header.host_status == SG_ERR_DID_NO_CONNECT || |
118 | r->io_header.host_status == SG_ERR_DID_BUS_BUSY || | |
119 | r->io_header.host_status == SG_ERR_DID_TIME_OUT || | |
120 | (r->io_header.driver_status & SG_ERR_DRIVER_TIMEOUT)) { | |
682a9b21 | 121 | status = BUSY; |
2cc977e2 | 122 | BADF("Driver Timeout\n"); |
a3b16e71 PB |
123 | } else if (r->io_header.host_status) { |
124 | status = CHECK_CONDITION; | |
125 | scsi_req_build_sense(&r->req, SENSE_CODE(I_T_NEXUS_LOSS)); | |
682a9b21 PB |
126 | } else if (r->io_header.status) { |
127 | status = r->io_header.status; | |
b45ef674 | 128 | } else if (r->io_header.driver_status & SG_ERR_DRIVER_SENSE) { |
682a9b21 PB |
129 | status = CHECK_CONDITION; |
130 | } else { | |
131 | status = GOOD; | |
132 | } | |
2cc977e2 | 133 | } |
89c0f643 | 134 | DPRINTF("Command complete 0x%p tag=0x%x status=%d\n", |
682a9b21 | 135 | r, r->req.tag, status); |
ed3a34a3 | 136 | |
682a9b21 | 137 | scsi_req_complete(&r->req, status); |
c9501c95 PB |
138 | if (!r->req.io_canceled) { |
139 | scsi_req_unref(&r->req); | |
140 | } | |
2cc977e2 TS |
141 | } |
142 | ||
143 | /* Cancel a pending data transfer. */ | |
5c6c0e51 | 144 | static void scsi_cancel_io(SCSIRequest *req) |
2cc977e2 | 145 | { |
5c6c0e51 HR |
146 | SCSIGenericReq *r = DO_UPCAST(SCSIGenericReq, req, req); |
147 | ||
148 | DPRINTF("Cancel tag=0x%x\n", req->tag); | |
149 | if (r->req.aiocb) { | |
150 | bdrv_aio_cancel(r->req.aiocb); | |
c9501c95 PB |
151 | |
152 | /* This reference was left in by scsi_*_data. We take ownership of | |
153 | * it independent of whether bdrv_aio_cancel completes the request | |
154 | * or not. */ | |
155 | scsi_req_unref(&r->req); | |
2cc977e2 | 156 | } |
5c6c0e51 | 157 | r->req.aiocb = NULL; |
2cc977e2 TS |
158 | } |
159 | ||
160 | static int execute_command(BlockDriverState *bdrv, | |
4c41d2ef | 161 | SCSIGenericReq *r, int direction, |
2cc977e2 TS |
162 | BlockDriverCompletionFunc *complete) |
163 | { | |
2cc977e2 TS |
164 | r->io_header.interface_id = 'S'; |
165 | r->io_header.dxfer_direction = direction; | |
166 | r->io_header.dxferp = r->buf; | |
167 | r->io_header.dxfer_len = r->buflen; | |
29362ebe GH |
168 | r->io_header.cmdp = r->req.cmd.buf; |
169 | r->io_header.cmd_len = r->req.cmd.len; | |
b45ef674 PB |
170 | r->io_header.mx_sb_len = sizeof(r->req.sense); |
171 | r->io_header.sbp = r->req.sense; | |
2cc977e2 TS |
172 | r->io_header.timeout = MAX_UINT; |
173 | r->io_header.usr_ptr = r; | |
174 | r->io_header.flags |= SG_FLAG_DIRECT_IO; | |
175 | ||
4c41d2ef | 176 | r->req.aiocb = bdrv_aio_ioctl(bdrv, SG_IO, &r->io_header, complete, r); |
d836f8d3 PH |
177 | if (r->req.aiocb == NULL) { |
178 | return -EIO; | |
179 | } | |
2cc977e2 TS |
180 | |
181 | return 0; | |
182 | } | |
183 | ||
184 | static void scsi_read_complete(void * opaque, int ret) | |
185 | { | |
4c41d2ef | 186 | SCSIGenericReq *r = (SCSIGenericReq *)opaque; |
9b6eef8a | 187 | SCSIDevice *s = r->req.dev; |
2cc977e2 TS |
188 | int len; |
189 | ||
d33e0ce2 | 190 | r->req.aiocb = NULL; |
2cc977e2 | 191 | if (ret) { |
aa2b1e89 | 192 | DPRINTF("IO error ret %d\n", ret); |
2cc977e2 TS |
193 | scsi_command_complete(r, ret); |
194 | return; | |
195 | } | |
196 | len = r->io_header.dxfer_len - r->io_header.resid; | |
4c41d2ef | 197 | DPRINTF("Data ready tag=0x%x len=%d\n", r->req.tag, len); |
2cc977e2 TS |
198 | |
199 | r->len = -1; | |
40f16dd1 | 200 | if (len == 0) { |
89c0f643 | 201 | scsi_command_complete(r, 0); |
40f16dd1 | 202 | } else { |
9b6eef8a | 203 | /* Snoop READ CAPACITY output to set the blocksize. */ |
53254e56 PB |
204 | if (r->req.cmd.buf[0] == READ_CAPACITY_10 && |
205 | (ldl_be_p(&r->buf[0]) != 0xffffffffU || s->max_lba == 0)) { | |
9b6eef8a | 206 | s->blocksize = ldl_be_p(&r->buf[4]); |
53254e56 | 207 | s->max_lba = ldl_be_p(&r->buf[0]) & 0xffffffffULL; |
9b6eef8a PB |
208 | } else if (r->req.cmd.buf[0] == SERVICE_ACTION_IN_16 && |
209 | (r->req.cmd.buf[1] & 31) == SAI_READ_CAPACITY_16) { | |
210 | s->blocksize = ldl_be_p(&r->buf[8]); | |
7877903a | 211 | s->max_lba = ldq_be_p(&r->buf[0]); |
9b6eef8a PB |
212 | } |
213 | bdrv_set_buffer_alignment(s->conf.bs, s->blocksize); | |
214 | ||
ab9adc88 | 215 | scsi_req_data(&r->req, len); |
c9501c95 PB |
216 | if (!r->req.io_canceled) { |
217 | scsi_req_unref(&r->req); | |
218 | } | |
40f16dd1 | 219 | } |
2cc977e2 TS |
220 | } |
221 | ||
222 | /* Read more data from scsi device into buffer. */ | |
5c6c0e51 | 223 | static void scsi_read_data(SCSIRequest *req) |
2cc977e2 | 224 | { |
5c6c0e51 | 225 | SCSIGenericReq *r = DO_UPCAST(SCSIGenericReq, req, req); |
8869e103 | 226 | SCSIDevice *s = r->req.dev; |
2cc977e2 TS |
227 | int ret; |
228 | ||
5c6c0e51 | 229 | DPRINTF("scsi_read_data 0x%x\n", req->tag); |
c9501c95 PB |
230 | |
231 | /* The request is used as the AIO opaque value, so add a ref. */ | |
232 | scsi_req_ref(&r->req); | |
2cc977e2 TS |
233 | if (r->len == -1) { |
234 | scsi_command_complete(r, 0); | |
235 | return; | |
236 | } | |
237 | ||
8869e103 | 238 | ret = execute_command(s->conf.bs, r, SG_DXFER_FROM_DEV, scsi_read_complete); |
a1f0cce2 HR |
239 | if (ret < 0) { |
240 | scsi_command_complete(r, ret); | |
2cc977e2 TS |
241 | } |
242 | } | |
243 | ||
244 | static void scsi_write_complete(void * opaque, int ret) | |
245 | { | |
4c41d2ef | 246 | SCSIGenericReq *r = (SCSIGenericReq *)opaque; |
8869e103 | 247 | SCSIDevice *s = r->req.dev; |
2cc977e2 TS |
248 | |
249 | DPRINTF("scsi_write_complete() ret = %d\n", ret); | |
d33e0ce2 | 250 | r->req.aiocb = NULL; |
2cc977e2 TS |
251 | if (ret) { |
252 | DPRINTF("IO error\n"); | |
253 | scsi_command_complete(r, ret); | |
254 | return; | |
255 | } | |
256 | ||
29362ebe | 257 | if (r->req.cmd.buf[0] == MODE_SELECT && r->req.cmd.buf[4] == 12 && |
8869e103 PB |
258 | s->type == TYPE_TAPE) { |
259 | s->blocksize = (r->buf[9] << 16) | (r->buf[10] << 8) | r->buf[11]; | |
260 | DPRINTF("block size %d\n", s->blocksize); | |
89c0f643 AJ |
261 | } |
262 | ||
2cc977e2 TS |
263 | scsi_command_complete(r, ret); |
264 | } | |
265 | ||
266 | /* Write data to a scsi device. Returns nonzero on failure. | |
267 | The transfer may complete asynchronously. */ | |
42741212 | 268 | static void scsi_write_data(SCSIRequest *req) |
2cc977e2 | 269 | { |
5c6c0e51 | 270 | SCSIGenericReq *r = DO_UPCAST(SCSIGenericReq, req, req); |
8869e103 | 271 | SCSIDevice *s = r->req.dev; |
2cc977e2 TS |
272 | int ret; |
273 | ||
5c6c0e51 | 274 | DPRINTF("scsi_write_data 0x%x\n", req->tag); |
2cc977e2 TS |
275 | if (r->len == 0) { |
276 | r->len = r->buflen; | |
ab9adc88 | 277 | scsi_req_data(&r->req, r->len); |
42741212 | 278 | return; |
2cc977e2 TS |
279 | } |
280 | ||
c9501c95 PB |
281 | /* The request is used as the AIO opaque value, so add a ref. */ |
282 | scsi_req_ref(&r->req); | |
8869e103 | 283 | ret = execute_command(s->conf.bs, r, SG_DXFER_TO_DEV, scsi_write_complete); |
a1f0cce2 HR |
284 | if (ret < 0) { |
285 | scsi_command_complete(r, ret); | |
2cc977e2 | 286 | } |
2cc977e2 TS |
287 | } |
288 | ||
289 | /* Return a pointer to the data buffer. */ | |
5c6c0e51 | 290 | static uint8_t *scsi_get_buf(SCSIRequest *req) |
2cc977e2 | 291 | { |
5c6c0e51 HR |
292 | SCSIGenericReq *r = DO_UPCAST(SCSIGenericReq, req, req); |
293 | ||
2cc977e2 TS |
294 | return r->buf; |
295 | } | |
296 | ||
2cc977e2 TS |
297 | /* Execute a scsi command. Returns the length of the data expected by the |
298 | command. This will be Positive for data transfers from the device | |
299 | (eg. disk reads), negative for transfers to the device (eg. disk writes), | |
300 | and zero if the command does not transfer any data. */ | |
301 | ||
5c6c0e51 | 302 | static int32_t scsi_send_command(SCSIRequest *req, uint8_t *cmd) |
2cc977e2 | 303 | { |
5c6c0e51 | 304 | SCSIGenericReq *r = DO_UPCAST(SCSIGenericReq, req, req); |
8869e103 | 305 | SCSIDevice *s = r->req.dev; |
2cc977e2 TS |
306 | int ret; |
307 | ||
aa2b1e89 BK |
308 | DPRINTF("Command: lun=%d tag=0x%x len %zd data=0x%02x", lun, tag, |
309 | r->req.cmd.xfer, cmd[0]); | |
310 | ||
311 | #ifdef DEBUG_SCSI | |
312 | { | |
313 | int i; | |
314 | for (i = 1; i < r->req.cmd.len; i++) { | |
315 | printf(" 0x%02x", cmd[i]); | |
316 | } | |
317 | printf("\n"); | |
318 | } | |
319 | #endif | |
2cc977e2 | 320 | |
2ec749cb | 321 | if (r->req.cmd.xfer == 0) { |
2cc977e2 | 322 | if (r->buf != NULL) |
7267c094 | 323 | g_free(r->buf); |
2cc977e2 TS |
324 | r->buflen = 0; |
325 | r->buf = NULL; | |
c9501c95 PB |
326 | /* The request is used as the AIO opaque value, so add a ref. */ |
327 | scsi_req_ref(&r->req); | |
8869e103 | 328 | ret = execute_command(s->conf.bs, r, SG_DXFER_NONE, scsi_command_complete); |
a1f0cce2 HR |
329 | if (ret < 0) { |
330 | scsi_command_complete(r, ret); | |
331 | return 0; | |
2cc977e2 TS |
332 | } |
333 | return 0; | |
334 | } | |
335 | ||
2ec749cb | 336 | if (r->buflen != r->req.cmd.xfer) { |
2cc977e2 | 337 | if (r->buf != NULL) |
7267c094 AL |
338 | g_free(r->buf); |
339 | r->buf = g_malloc(r->req.cmd.xfer); | |
2ec749cb | 340 | r->buflen = r->req.cmd.xfer; |
2cc977e2 TS |
341 | } |
342 | ||
343 | memset(r->buf, 0, r->buflen); | |
2ec749cb | 344 | r->len = r->req.cmd.xfer; |
97a06435 | 345 | if (r->req.cmd.mode == SCSI_XFER_TO_DEV) { |
2cc977e2 | 346 | r->len = 0; |
5c6c0e51 | 347 | return -r->req.cmd.xfer; |
ad2d30f7 | 348 | } else { |
5c6c0e51 | 349 | return r->req.cmd.xfer; |
2cc977e2 | 350 | } |
2cc977e2 TS |
351 | } |
352 | ||
89c0f643 AJ |
353 | static int get_stream_blocksize(BlockDriverState *bdrv) |
354 | { | |
355 | uint8_t cmd[6]; | |
356 | uint8_t buf[12]; | |
357 | uint8_t sensebuf[8]; | |
358 | sg_io_hdr_t io_header; | |
359 | int ret; | |
360 | ||
361 | memset(cmd, 0, sizeof(cmd)); | |
362 | memset(buf, 0, sizeof(buf)); | |
363 | cmd[0] = MODE_SENSE; | |
364 | cmd[4] = sizeof(buf); | |
365 | ||
366 | memset(&io_header, 0, sizeof(io_header)); | |
367 | io_header.interface_id = 'S'; | |
368 | io_header.dxfer_direction = SG_DXFER_FROM_DEV; | |
369 | io_header.dxfer_len = sizeof(buf); | |
370 | io_header.dxferp = buf; | |
371 | io_header.cmdp = cmd; | |
372 | io_header.cmd_len = sizeof(cmd); | |
373 | io_header.mx_sb_len = sizeof(sensebuf); | |
374 | io_header.sbp = sensebuf; | |
375 | io_header.timeout = 6000; /* XXX */ | |
376 | ||
221f715d | 377 | ret = bdrv_ioctl(bdrv, SG_IO, &io_header); |
fe0ed712 | 378 | if (ret < 0 || io_header.driver_status || io_header.host_status) { |
89c0f643 | 379 | return -1; |
fe0ed712 | 380 | } |
89c0f643 AJ |
381 | return (buf[9] << 16) | (buf[10] << 8) | buf[11]; |
382 | } | |
383 | ||
f8b6d672 BK |
384 | static void scsi_generic_reset(DeviceState *dev) |
385 | { | |
b9eea3e6 | 386 | SCSIDevice *s = SCSI_DEVICE(dev); |
f8b6d672 | 387 | |
8869e103 | 388 | scsi_device_purge_requests(s, SENSE_CODE(RESET)); |
f8b6d672 BK |
389 | } |
390 | ||
8869e103 | 391 | static void scsi_destroy(SCSIDevice *s) |
f8b6d672 | 392 | { |
8869e103 PB |
393 | scsi_device_purge_requests(s, SENSE_CODE(NO_SENSE)); |
394 | blockdev_mark_auto_del(s->conf.bs); | |
2cc977e2 TS |
395 | } |
396 | ||
8869e103 | 397 | static int scsi_generic_initfn(SCSIDevice *s) |
2cc977e2 TS |
398 | { |
399 | int sg_version; | |
2cc977e2 TS |
400 | struct sg_scsi_id scsiid; |
401 | ||
8869e103 | 402 | if (!s->conf.bs) { |
6a84cb1f | 403 | error_report("drive property not set"); |
d52affa7 GH |
404 | return -1; |
405 | } | |
2cc977e2 | 406 | |
92aa5c6d | 407 | if (bdrv_get_on_error(s->conf.bs, 0) != BLOCKDEV_ON_ERROR_ENOSPC) { |
620f862e MA |
408 | error_report("Device doesn't support drive option werror"); |
409 | return -1; | |
410 | } | |
92aa5c6d | 411 | if (bdrv_get_on_error(s->conf.bs, 1) != BLOCKDEV_ON_ERROR_REPORT) { |
620f862e MA |
412 | error_report("Device doesn't support drive option rerror"); |
413 | return -1; | |
414 | } | |
415 | ||
2cc977e2 | 416 | /* check we are using a driver managing SG_IO (version 3 and after */ |
98392453 RS |
417 | if (bdrv_ioctl(s->conf.bs, SG_GET_VERSION_NUM, &sg_version) < 0) { |
418 | error_report("scsi generic interface not supported"); | |
419 | return -1; | |
420 | } | |
421 | if (sg_version < 30000) { | |
6a84cb1f | 422 | error_report("scsi generic interface too old"); |
d52affa7 GH |
423 | return -1; |
424 | } | |
2cc977e2 TS |
425 | |
426 | /* get LUN of the /dev/sg? */ | |
8869e103 | 427 | if (bdrv_ioctl(s->conf.bs, SG_GET_SCSI_ID, &scsiid)) { |
6a84cb1f | 428 | error_report("SG_GET_SCSI_ID ioctl failed"); |
d52affa7 GH |
429 | return -1; |
430 | } | |
2cc977e2 TS |
431 | |
432 | /* define device state */ | |
8869e103 PB |
433 | s->type = scsiid.scsi_type; |
434 | DPRINTF("device type %d\n", s->type); | |
28b77657 PB |
435 | if (s->type == TYPE_DISK || s->type == TYPE_ROM) { |
436 | add_boot_device_path(s->conf.bootindex, &s->qdev, NULL); | |
437 | } | |
438 | ||
9b6eef8a PB |
439 | switch (s->type) { |
440 | case TYPE_TAPE: | |
8869e103 PB |
441 | s->blocksize = get_stream_blocksize(s->conf.bs); |
442 | if (s->blocksize == -1) { | |
443 | s->blocksize = 0; | |
444 | } | |
9b6eef8a PB |
445 | break; |
446 | ||
447 | /* Make a guess for block devices, we'll fix it when the guest sends. | |
448 | * READ CAPACITY. If they don't, they likely would assume these sizes | |
449 | * anyway. (TODO: they could also send MODE SENSE). | |
450 | */ | |
451 | case TYPE_ROM: | |
452 | case TYPE_WORM: | |
453 | s->blocksize = 2048; | |
454 | break; | |
455 | default: | |
456 | s->blocksize = 512; | |
457 | break; | |
89c0f643 | 458 | } |
8869e103 PB |
459 | |
460 | DPRINTF("block size %d\n", s->blocksize); | |
d52affa7 GH |
461 | return 0; |
462 | } | |
2cc977e2 | 463 | |
765d1525 | 464 | const SCSIReqOps scsi_generic_req_ops = { |
8dbd4574 | 465 | .size = sizeof(SCSIGenericReq), |
12010e7b PB |
466 | .free_req = scsi_free_request, |
467 | .send_command = scsi_send_command, | |
468 | .read_data = scsi_read_data, | |
469 | .write_data = scsi_write_data, | |
470 | .cancel_io = scsi_cancel_io, | |
471 | .get_buf = scsi_get_buf, | |
56b1fc48 PB |
472 | .load_request = scsi_generic_load_request, |
473 | .save_request = scsi_generic_save_request, | |
8dbd4574 PB |
474 | }; |
475 | ||
476 | static SCSIRequest *scsi_new_request(SCSIDevice *d, uint32_t tag, uint32_t lun, | |
63db0f0e | 477 | uint8_t *buf, void *hba_private) |
8dbd4574 PB |
478 | { |
479 | SCSIRequest *req; | |
480 | ||
481 | req = scsi_req_alloc(&scsi_generic_req_ops, d, tag, lun, hba_private); | |
482 | return req; | |
483 | } | |
484 | ||
39bffca2 | 485 | static Property scsi_generic_properties[] = { |
0f1da449 PB |
486 | DEFINE_PROP_DRIVE("drive", SCSIDevice, conf.bs), |
487 | DEFINE_PROP_INT32("bootindex", SCSIDevice, conf.bootindex, -1), | |
39bffca2 AL |
488 | DEFINE_PROP_END_OF_LIST(), |
489 | }; | |
490 | ||
b9eea3e6 AL |
491 | static void scsi_generic_class_initfn(ObjectClass *klass, void *data) |
492 | { | |
39bffca2 | 493 | DeviceClass *dc = DEVICE_CLASS(klass); |
b9eea3e6 AL |
494 | SCSIDeviceClass *sc = SCSI_DEVICE_CLASS(klass); |
495 | ||
496 | sc->init = scsi_generic_initfn; | |
497 | sc->destroy = scsi_destroy; | |
498 | sc->alloc_req = scsi_new_request; | |
39bffca2 AL |
499 | dc->fw_name = "disk"; |
500 | dc->desc = "pass through generic scsi device (/dev/sg*)"; | |
501 | dc->reset = scsi_generic_reset; | |
502 | dc->props = scsi_generic_properties; | |
56b1fc48 | 503 | dc->vmsd = &vmstate_scsi_device; |
b9eea3e6 AL |
504 | } |
505 | ||
8c43a6f0 | 506 | static const TypeInfo scsi_generic_info = { |
39bffca2 AL |
507 | .name = "scsi-generic", |
508 | .parent = TYPE_SCSI_DEVICE, | |
509 | .instance_size = sizeof(SCSIDevice), | |
510 | .class_init = scsi_generic_class_initfn, | |
d52affa7 | 511 | }; |
2cc977e2 | 512 | |
83f7d43a | 513 | static void scsi_generic_register_types(void) |
d52affa7 | 514 | { |
39bffca2 | 515 | type_register_static(&scsi_generic_info); |
2cc977e2 | 516 | } |
83f7d43a AF |
517 | |
518 | type_init(scsi_generic_register_types) | |
d52affa7 | 519 | |
2cc977e2 | 520 | #endif /* __linux__ */ |