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 #include "qemu/osdep.h" 23 #include "qemu/units.h" 24 #include "qapi/error.h" 25 #include "qemu/error-report.h" 26 #include "qemu/main-loop.h" 27 #include "qemu/module.h" 28 #include "hw/scsi/scsi.h" 29 #include "migration/qemu-file-types.h" 30 #include "migration/vmstate.h" 31 #include "hw/scsi/emulation.h" 32 #include "scsi/constants.h" 33 #include "sysemu/block-backend.h" 34 #include "sysemu/blockdev.h" 35 #include "hw/block/block.h" 36 #include "hw/qdev-properties.h" 37 #include "sysemu/dma.h" 38 #include "sysemu/sysemu.h" 39 #include "qemu/cutils.h" 40 #include "trace.h" 41 42 #ifdef __linux 43 #include <scsi/sg.h> 44 #endif 45 46 #define SCSI_WRITE_SAME_MAX (512 * KiB) 47 #define SCSI_DMA_BUF_SIZE (128 * KiB) 48 #define SCSI_MAX_INQUIRY_LEN 256 49 #define SCSI_MAX_MODE_LEN 256 50 51 #define DEFAULT_DISCARD_GRANULARITY (4 * KiB) 52 #define DEFAULT_MAX_UNMAP_SIZE (1 * GiB) 53 #define DEFAULT_MAX_IO_SIZE INT_MAX /* 2 GB - 1 block */ 54 55 #define TYPE_SCSI_DISK_BASE "scsi-disk-base" 56 57 #define SCSI_DISK_BASE(obj) \ 58 OBJECT_CHECK(SCSIDiskState, (obj), TYPE_SCSI_DISK_BASE) 59 #define SCSI_DISK_BASE_CLASS(klass) \ 60 OBJECT_CLASS_CHECK(SCSIDiskClass, (klass), TYPE_SCSI_DISK_BASE) 61 #define SCSI_DISK_BASE_GET_CLASS(obj) \ 62 OBJECT_GET_CLASS(SCSIDiskClass, (obj), TYPE_SCSI_DISK_BASE) 63 64 typedef struct SCSIDiskClass { 65 SCSIDeviceClass parent_class; 66 DMAIOFunc *dma_readv; 67 DMAIOFunc *dma_writev; 68 bool (*need_fua_emulation)(SCSICommand *cmd); 69 void (*update_sense)(SCSIRequest *r); 70 } SCSIDiskClass; 71 72 typedef struct SCSIDiskReq { 73 SCSIRequest req; 74 /* Both sector and sector_count are in terms of BDRV_SECTOR_SIZE bytes. */ 75 uint64_t sector; 76 uint32_t sector_count; 77 uint32_t buflen; 78 bool started; 79 bool need_fua_emulation; 80 struct iovec iov; 81 QEMUIOVector qiov; 82 BlockAcctCookie acct; 83 unsigned char *status; 84 } SCSIDiskReq; 85 86 #define SCSI_DISK_F_REMOVABLE 0 87 #define SCSI_DISK_F_DPOFUA 1 88 #define SCSI_DISK_F_NO_REMOVABLE_DEVOPS 2 89 90 typedef struct SCSIDiskState 91 { 92 SCSIDevice qdev; 93 uint32_t features; 94 bool media_changed; 95 bool media_event; 96 bool eject_request; 97 uint16_t port_index; 98 uint64_t max_unmap_size; 99 uint64_t max_io_size; 100 QEMUBH *bh; 101 char *version; 102 char *serial; 103 char *vendor; 104 char *product; 105 char *device_id; 106 bool tray_open; 107 bool tray_locked; 108 /* 109 * 0x0000 - rotation rate not reported 110 * 0x0001 - non-rotating medium (SSD) 111 * 0x0002-0x0400 - reserved 112 * 0x0401-0xffe - rotations per minute 113 * 0xffff - reserved 114 */ 115 uint16_t rotation_rate; 116 } SCSIDiskState; 117 118 static bool scsi_handle_rw_error(SCSIDiskReq *r, int error, bool acct_failed); 119 120 static void scsi_free_request(SCSIRequest *req) 121 { 122 SCSIDiskReq *r = DO_UPCAST(SCSIDiskReq, req, req); 123 124 qemu_vfree(r->iov.iov_base); 125 } 126 127 /* Helper function for command completion with sense. */ 128 static void scsi_check_condition(SCSIDiskReq *r, SCSISense sense) 129 { 130 trace_scsi_disk_check_condition(r->req.tag, sense.key, sense.asc, 131 sense.ascq); 132 scsi_req_build_sense(&r->req, sense); 133 scsi_req_complete(&r->req, CHECK_CONDITION); 134 } 135 136 static void scsi_init_iovec(SCSIDiskReq *r, size_t size) 137 { 138 SCSIDiskState *s = DO_UPCAST(SCSIDiskState, qdev, r->req.dev); 139 140 if (!r->iov.iov_base) { 141 r->buflen = size; 142 r->iov.iov_base = blk_blockalign(s->qdev.conf.blk, r->buflen); 143 } 144 r->iov.iov_len = MIN(r->sector_count * BDRV_SECTOR_SIZE, r->buflen); 145 qemu_iovec_init_external(&r->qiov, &r->iov, 1); 146 } 147 148 static void scsi_disk_save_request(QEMUFile *f, SCSIRequest *req) 149 { 150 SCSIDiskReq *r = DO_UPCAST(SCSIDiskReq, req, req); 151 152 qemu_put_be64s(f, &r->sector); 153 qemu_put_be32s(f, &r->sector_count); 154 qemu_put_be32s(f, &r->buflen); 155 if (r->buflen) { 156 if (r->req.cmd.mode == SCSI_XFER_TO_DEV) { 157 qemu_put_buffer(f, r->iov.iov_base, r->iov.iov_len); 158 } else if (!req->retry) { 159 uint32_t len = r->iov.iov_len; 160 qemu_put_be32s(f, &len); 161 qemu_put_buffer(f, r->iov.iov_base, r->iov.iov_len); 162 } 163 } 164 } 165 166 static void scsi_disk_load_request(QEMUFile *f, SCSIRequest *req) 167 { 168 SCSIDiskReq *r = DO_UPCAST(SCSIDiskReq, req, req); 169 170 qemu_get_be64s(f, &r->sector); 171 qemu_get_be32s(f, &r->sector_count); 172 qemu_get_be32s(f, &r->buflen); 173 if (r->buflen) { 174 scsi_init_iovec(r, r->buflen); 175 if (r->req.cmd.mode == SCSI_XFER_TO_DEV) { 176 qemu_get_buffer(f, r->iov.iov_base, r->iov.iov_len); 177 } else if (!r->req.retry) { 178 uint32_t len; 179 qemu_get_be32s(f, &len); 180 r->iov.iov_len = len; 181 assert(r->iov.iov_len <= r->buflen); 182 qemu_get_buffer(f, r->iov.iov_base, r->iov.iov_len); 183 } 184 } 185 186 qemu_iovec_init_external(&r->qiov, &r->iov, 1); 187 } 188 189 static bool scsi_disk_req_check_error(SCSIDiskReq *r, int ret, bool acct_failed) 190 { 191 if (r->req.io_canceled) { 192 scsi_req_cancel_complete(&r->req); 193 return true; 194 } 195 196 if (ret < 0 || (r->status && *r->status)) { 197 return scsi_handle_rw_error(r, -ret, acct_failed); 198 } 199 200 return false; 201 } 202 203 static void scsi_aio_complete(void *opaque, int ret) 204 { 205 SCSIDiskReq *r = (SCSIDiskReq *)opaque; 206 SCSIDiskState *s = DO_UPCAST(SCSIDiskState, qdev, r->req.dev); 207 208 assert(r->req.aiocb != NULL); 209 r->req.aiocb = NULL; 210 aio_context_acquire(blk_get_aio_context(s->qdev.conf.blk)); 211 if (scsi_disk_req_check_error(r, ret, true)) { 212 goto done; 213 } 214 215 block_acct_done(blk_get_stats(s->qdev.conf.blk), &r->acct); 216 scsi_req_complete(&r->req, GOOD); 217 218 done: 219 aio_context_release(blk_get_aio_context(s->qdev.conf.blk)); 220 scsi_req_unref(&r->req); 221 } 222 223 static bool scsi_is_cmd_fua(SCSICommand *cmd) 224 { 225 switch (cmd->buf[0]) { 226 case READ_10: 227 case READ_12: 228 case READ_16: 229 case WRITE_10: 230 case WRITE_12: 231 case WRITE_16: 232 return (cmd->buf[1] & 8) != 0; 233 234 case VERIFY_10: 235 case VERIFY_12: 236 case VERIFY_16: 237 case WRITE_VERIFY_10: 238 case WRITE_VERIFY_12: 239 case WRITE_VERIFY_16: 240 return true; 241 242 case READ_6: 243 case WRITE_6: 244 default: 245 return false; 246 } 247 } 248 249 static void scsi_write_do_fua(SCSIDiskReq *r) 250 { 251 SCSIDiskState *s = DO_UPCAST(SCSIDiskState, qdev, r->req.dev); 252 253 assert(r->req.aiocb == NULL); 254 assert(!r->req.io_canceled); 255 256 if (r->need_fua_emulation) { 257 block_acct_start(blk_get_stats(s->qdev.conf.blk), &r->acct, 0, 258 BLOCK_ACCT_FLUSH); 259 r->req.aiocb = blk_aio_flush(s->qdev.conf.blk, scsi_aio_complete, r); 260 return; 261 } 262 263 scsi_req_complete(&r->req, GOOD); 264 scsi_req_unref(&r->req); 265 } 266 267 static void scsi_dma_complete_noio(SCSIDiskReq *r, int ret) 268 { 269 assert(r->req.aiocb == NULL); 270 if (scsi_disk_req_check_error(r, ret, false)) { 271 goto done; 272 } 273 274 r->sector += r->sector_count; 275 r->sector_count = 0; 276 if (r->req.cmd.mode == SCSI_XFER_TO_DEV) { 277 scsi_write_do_fua(r); 278 return; 279 } else { 280 scsi_req_complete(&r->req, GOOD); 281 } 282 283 done: 284 scsi_req_unref(&r->req); 285 } 286 287 static void scsi_dma_complete(void *opaque, int ret) 288 { 289 SCSIDiskReq *r = (SCSIDiskReq *)opaque; 290 SCSIDiskState *s = DO_UPCAST(SCSIDiskState, qdev, r->req.dev); 291 292 assert(r->req.aiocb != NULL); 293 r->req.aiocb = NULL; 294 295 aio_context_acquire(blk_get_aio_context(s->qdev.conf.blk)); 296 if (ret < 0) { 297 block_acct_failed(blk_get_stats(s->qdev.conf.blk), &r->acct); 298 } else { 299 block_acct_done(blk_get_stats(s->qdev.conf.blk), &r->acct); 300 } 301 scsi_dma_complete_noio(r, ret); 302 aio_context_release(blk_get_aio_context(s->qdev.conf.blk)); 303 } 304 305 static void scsi_read_complete_noio(SCSIDiskReq *r, int ret) 306 { 307 uint32_t n; 308 309 assert(r->req.aiocb == NULL); 310 if (scsi_disk_req_check_error(r, ret, false)) { 311 goto done; 312 } 313 314 n = r->qiov.size / BDRV_SECTOR_SIZE; 315 r->sector += n; 316 r->sector_count -= n; 317 scsi_req_data(&r->req, r->qiov.size); 318 319 done: 320 scsi_req_unref(&r->req); 321 } 322 323 static void scsi_read_complete(void *opaque, int ret) 324 { 325 SCSIDiskReq *r = (SCSIDiskReq *)opaque; 326 SCSIDiskState *s = DO_UPCAST(SCSIDiskState, qdev, r->req.dev); 327 328 assert(r->req.aiocb != NULL); 329 r->req.aiocb = NULL; 330 331 aio_context_acquire(blk_get_aio_context(s->qdev.conf.blk)); 332 if (ret < 0) { 333 block_acct_failed(blk_get_stats(s->qdev.conf.blk), &r->acct); 334 } else { 335 block_acct_done(blk_get_stats(s->qdev.conf.blk), &r->acct); 336 trace_scsi_disk_read_complete(r->req.tag, r->qiov.size); 337 } 338 scsi_read_complete_noio(r, ret); 339 aio_context_release(blk_get_aio_context(s->qdev.conf.blk)); 340 } 341 342 /* Actually issue a read to the block device. */ 343 static void scsi_do_read(SCSIDiskReq *r, int ret) 344 { 345 SCSIDiskState *s = DO_UPCAST(SCSIDiskState, qdev, r->req.dev); 346 SCSIDiskClass *sdc = (SCSIDiskClass *) object_get_class(OBJECT(s)); 347 348 assert (r->req.aiocb == NULL); 349 if (scsi_disk_req_check_error(r, ret, false)) { 350 goto done; 351 } 352 353 /* The request is used as the AIO opaque value, so add a ref. */ 354 scsi_req_ref(&r->req); 355 356 if (r->req.sg) { 357 dma_acct_start(s->qdev.conf.blk, &r->acct, r->req.sg, BLOCK_ACCT_READ); 358 r->req.resid -= r->req.sg->size; 359 r->req.aiocb = dma_blk_io(blk_get_aio_context(s->qdev.conf.blk), 360 r->req.sg, r->sector << BDRV_SECTOR_BITS, 361 BDRV_SECTOR_SIZE, 362 sdc->dma_readv, r, scsi_dma_complete, r, 363 DMA_DIRECTION_FROM_DEVICE); 364 } else { 365 scsi_init_iovec(r, SCSI_DMA_BUF_SIZE); 366 block_acct_start(blk_get_stats(s->qdev.conf.blk), &r->acct, 367 r->qiov.size, BLOCK_ACCT_READ); 368 r->req.aiocb = sdc->dma_readv(r->sector << BDRV_SECTOR_BITS, &r->qiov, 369 scsi_read_complete, r, r); 370 } 371 372 done: 373 scsi_req_unref(&r->req); 374 } 375 376 static void scsi_do_read_cb(void *opaque, int ret) 377 { 378 SCSIDiskReq *r = (SCSIDiskReq *)opaque; 379 SCSIDiskState *s = DO_UPCAST(SCSIDiskState, qdev, r->req.dev); 380 381 assert (r->req.aiocb != NULL); 382 r->req.aiocb = NULL; 383 384 aio_context_acquire(blk_get_aio_context(s->qdev.conf.blk)); 385 if (ret < 0) { 386 block_acct_failed(blk_get_stats(s->qdev.conf.blk), &r->acct); 387 } else { 388 block_acct_done(blk_get_stats(s->qdev.conf.blk), &r->acct); 389 } 390 scsi_do_read(opaque, ret); 391 aio_context_release(blk_get_aio_context(s->qdev.conf.blk)); 392 } 393 394 /* Read more data from scsi device into buffer. */ 395 static void scsi_read_data(SCSIRequest *req) 396 { 397 SCSIDiskReq *r = DO_UPCAST(SCSIDiskReq, req, req); 398 SCSIDiskState *s = DO_UPCAST(SCSIDiskState, qdev, r->req.dev); 399 bool first; 400 401 trace_scsi_disk_read_data_count(r->sector_count); 402 if (r->sector_count == 0) { 403 /* This also clears the sense buffer for REQUEST SENSE. */ 404 scsi_req_complete(&r->req, GOOD); 405 return; 406 } 407 408 /* No data transfer may already be in progress */ 409 assert(r->req.aiocb == NULL); 410 411 /* The request is used as the AIO opaque value, so add a ref. */ 412 scsi_req_ref(&r->req); 413 if (r->req.cmd.mode == SCSI_XFER_TO_DEV) { 414 trace_scsi_disk_read_data_invalid(); 415 scsi_read_complete_noio(r, -EINVAL); 416 return; 417 } 418 419 if (!blk_is_available(req->dev->conf.blk)) { 420 scsi_read_complete_noio(r, -ENOMEDIUM); 421 return; 422 } 423 424 first = !r->started; 425 r->started = true; 426 if (first && r->need_fua_emulation) { 427 block_acct_start(blk_get_stats(s->qdev.conf.blk), &r->acct, 0, 428 BLOCK_ACCT_FLUSH); 429 r->req.aiocb = blk_aio_flush(s->qdev.conf.blk, scsi_do_read_cb, r); 430 } else { 431 scsi_do_read(r, 0); 432 } 433 } 434 435 /* 436 * scsi_handle_rw_error has two return values. False means that the error 437 * must be ignored, true means that the error has been processed and the 438 * caller should not do anything else for this request. Note that 439 * scsi_handle_rw_error always manages its reference counts, independent 440 * of the return value. 441 */ 442 static bool scsi_handle_rw_error(SCSIDiskReq *r, int error, bool acct_failed) 443 { 444 bool is_read = (r->req.cmd.mode == SCSI_XFER_FROM_DEV); 445 SCSIDiskState *s = DO_UPCAST(SCSIDiskState, qdev, r->req.dev); 446 SCSIDiskClass *sdc = (SCSIDiskClass *) object_get_class(OBJECT(s)); 447 BlockErrorAction action = blk_get_error_action(s->qdev.conf.blk, 448 is_read, error); 449 450 if (action == BLOCK_ERROR_ACTION_REPORT) { 451 if (acct_failed) { 452 block_acct_failed(blk_get_stats(s->qdev.conf.blk), &r->acct); 453 } 454 switch (error) { 455 case 0: 456 /* A passthrough command has run and has produced sense data; check 457 * whether the error has to be handled by the guest or should rather 458 * pause the host. 459 */ 460 assert(r->status && *r->status); 461 if (scsi_sense_buf_is_guest_recoverable(r->req.sense, sizeof(r->req.sense))) { 462 /* These errors are handled by guest. */ 463 sdc->update_sense(&r->req); 464 scsi_req_complete(&r->req, *r->status); 465 return true; 466 } 467 error = scsi_sense_buf_to_errno(r->req.sense, sizeof(r->req.sense)); 468 break; 469 case ENOMEDIUM: 470 scsi_check_condition(r, SENSE_CODE(NO_MEDIUM)); 471 break; 472 case ENOMEM: 473 scsi_check_condition(r, SENSE_CODE(TARGET_FAILURE)); 474 break; 475 case EINVAL: 476 scsi_check_condition(r, SENSE_CODE(INVALID_FIELD)); 477 break; 478 case ENOSPC: 479 scsi_check_condition(r, SENSE_CODE(SPACE_ALLOC_FAILED)); 480 break; 481 default: 482 scsi_check_condition(r, SENSE_CODE(IO_ERROR)); 483 break; 484 } 485 } 486 487 blk_error_action(s->qdev.conf.blk, action, is_read, error); 488 if (action == BLOCK_ERROR_ACTION_IGNORE) { 489 scsi_req_complete(&r->req, 0); 490 return true; 491 } 492 493 if (action == BLOCK_ERROR_ACTION_STOP) { 494 scsi_req_retry(&r->req); 495 } 496 return true; 497 } 498 499 static void scsi_write_complete_noio(SCSIDiskReq *r, int ret) 500 { 501 uint32_t n; 502 503 assert (r->req.aiocb == NULL); 504 if (scsi_disk_req_check_error(r, ret, false)) { 505 goto done; 506 } 507 508 n = r->qiov.size / BDRV_SECTOR_SIZE; 509 r->sector += n; 510 r->sector_count -= n; 511 if (r->sector_count == 0) { 512 scsi_write_do_fua(r); 513 return; 514 } else { 515 scsi_init_iovec(r, SCSI_DMA_BUF_SIZE); 516 trace_scsi_disk_write_complete_noio(r->req.tag, r->qiov.size); 517 scsi_req_data(&r->req, r->qiov.size); 518 } 519 520 done: 521 scsi_req_unref(&r->req); 522 } 523 524 static void scsi_write_complete(void * opaque, int ret) 525 { 526 SCSIDiskReq *r = (SCSIDiskReq *)opaque; 527 SCSIDiskState *s = DO_UPCAST(SCSIDiskState, qdev, r->req.dev); 528 529 assert (r->req.aiocb != NULL); 530 r->req.aiocb = NULL; 531 532 aio_context_acquire(blk_get_aio_context(s->qdev.conf.blk)); 533 if (ret < 0) { 534 block_acct_failed(blk_get_stats(s->qdev.conf.blk), &r->acct); 535 } else { 536 block_acct_done(blk_get_stats(s->qdev.conf.blk), &r->acct); 537 } 538 scsi_write_complete_noio(r, ret); 539 aio_context_release(blk_get_aio_context(s->qdev.conf.blk)); 540 } 541 542 static void scsi_write_data(SCSIRequest *req) 543 { 544 SCSIDiskReq *r = DO_UPCAST(SCSIDiskReq, req, req); 545 SCSIDiskState *s = DO_UPCAST(SCSIDiskState, qdev, r->req.dev); 546 SCSIDiskClass *sdc = (SCSIDiskClass *) object_get_class(OBJECT(s)); 547 548 /* No data transfer may already be in progress */ 549 assert(r->req.aiocb == NULL); 550 551 /* The request is used as the AIO opaque value, so add a ref. */ 552 scsi_req_ref(&r->req); 553 if (r->req.cmd.mode != SCSI_XFER_TO_DEV) { 554 trace_scsi_disk_write_data_invalid(); 555 scsi_write_complete_noio(r, -EINVAL); 556 return; 557 } 558 559 if (!r->req.sg && !r->qiov.size) { 560 /* Called for the first time. Ask the driver to send us more data. */ 561 r->started = true; 562 scsi_write_complete_noio(r, 0); 563 return; 564 } 565 if (!blk_is_available(req->dev->conf.blk)) { 566 scsi_write_complete_noio(r, -ENOMEDIUM); 567 return; 568 } 569 570 if (r->req.cmd.buf[0] == VERIFY_10 || r->req.cmd.buf[0] == VERIFY_12 || 571 r->req.cmd.buf[0] == VERIFY_16) { 572 if (r->req.sg) { 573 scsi_dma_complete_noio(r, 0); 574 } else { 575 scsi_write_complete_noio(r, 0); 576 } 577 return; 578 } 579 580 if (r->req.sg) { 581 dma_acct_start(s->qdev.conf.blk, &r->acct, r->req.sg, BLOCK_ACCT_WRITE); 582 r->req.resid -= r->req.sg->size; 583 r->req.aiocb = dma_blk_io(blk_get_aio_context(s->qdev.conf.blk), 584 r->req.sg, r->sector << BDRV_SECTOR_BITS, 585 BDRV_SECTOR_SIZE, 586 sdc->dma_writev, r, scsi_dma_complete, r, 587 DMA_DIRECTION_TO_DEVICE); 588 } else { 589 block_acct_start(blk_get_stats(s->qdev.conf.blk), &r->acct, 590 r->qiov.size, BLOCK_ACCT_WRITE); 591 r->req.aiocb = sdc->dma_writev(r->sector << BDRV_SECTOR_BITS, &r->qiov, 592 scsi_write_complete, r, r); 593 } 594 } 595 596 /* Return a pointer to the data buffer. */ 597 static uint8_t *scsi_get_buf(SCSIRequest *req) 598 { 599 SCSIDiskReq *r = DO_UPCAST(SCSIDiskReq, req, req); 600 601 return (uint8_t *)r->iov.iov_base; 602 } 603 604 static int scsi_disk_emulate_vpd_page(SCSIRequest *req, uint8_t *outbuf) 605 { 606 SCSIDiskState *s = DO_UPCAST(SCSIDiskState, qdev, req->dev); 607 uint8_t page_code = req->cmd.buf[2]; 608 int start, buflen = 0; 609 610 outbuf[buflen++] = s->qdev.type & 0x1f; 611 outbuf[buflen++] = page_code; 612 outbuf[buflen++] = 0x00; 613 outbuf[buflen++] = 0x00; 614 start = buflen; 615 616 switch (page_code) { 617 case 0x00: /* Supported page codes, mandatory */ 618 { 619 trace_scsi_disk_emulate_vpd_page_00(req->cmd.xfer); 620 outbuf[buflen++] = 0x00; /* list of supported pages (this page) */ 621 if (s->serial) { 622 outbuf[buflen++] = 0x80; /* unit serial number */ 623 } 624 outbuf[buflen++] = 0x83; /* device identification */ 625 if (s->qdev.type == TYPE_DISK) { 626 outbuf[buflen++] = 0xb0; /* block limits */ 627 outbuf[buflen++] = 0xb1; /* block device characteristics */ 628 outbuf[buflen++] = 0xb2; /* thin provisioning */ 629 } 630 break; 631 } 632 case 0x80: /* Device serial number, optional */ 633 { 634 int l; 635 636 if (!s->serial) { 637 trace_scsi_disk_emulate_vpd_page_80_not_supported(); 638 return -1; 639 } 640 641 l = strlen(s->serial); 642 if (l > 36) { 643 l = 36; 644 } 645 646 trace_scsi_disk_emulate_vpd_page_80(req->cmd.xfer); 647 memcpy(outbuf + buflen, s->serial, l); 648 buflen += l; 649 break; 650 } 651 652 case 0x83: /* Device identification page, mandatory */ 653 { 654 int id_len = s->device_id ? MIN(strlen(s->device_id), 255 - 8) : 0; 655 656 trace_scsi_disk_emulate_vpd_page_83(req->cmd.xfer); 657 658 if (id_len) { 659 outbuf[buflen++] = 0x2; /* ASCII */ 660 outbuf[buflen++] = 0; /* not officially assigned */ 661 outbuf[buflen++] = 0; /* reserved */ 662 outbuf[buflen++] = id_len; /* length of data following */ 663 memcpy(outbuf + buflen, s->device_id, id_len); 664 buflen += id_len; 665 } 666 667 if (s->qdev.wwn) { 668 outbuf[buflen++] = 0x1; /* Binary */ 669 outbuf[buflen++] = 0x3; /* NAA */ 670 outbuf[buflen++] = 0; /* reserved */ 671 outbuf[buflen++] = 8; 672 stq_be_p(&outbuf[buflen], s->qdev.wwn); 673 buflen += 8; 674 } 675 676 if (s->qdev.port_wwn) { 677 outbuf[buflen++] = 0x61; /* SAS / Binary */ 678 outbuf[buflen++] = 0x93; /* PIV / Target port / NAA */ 679 outbuf[buflen++] = 0; /* reserved */ 680 outbuf[buflen++] = 8; 681 stq_be_p(&outbuf[buflen], s->qdev.port_wwn); 682 buflen += 8; 683 } 684 685 if (s->port_index) { 686 outbuf[buflen++] = 0x61; /* SAS / Binary */ 687 688 /* PIV/Target port/relative target port */ 689 outbuf[buflen++] = 0x94; 690 691 outbuf[buflen++] = 0; /* reserved */ 692 outbuf[buflen++] = 4; 693 stw_be_p(&outbuf[buflen + 2], s->port_index); 694 buflen += 4; 695 } 696 break; 697 } 698 case 0xb0: /* block limits */ 699 { 700 SCSIBlockLimits bl = {}; 701 702 if (s->qdev.type == TYPE_ROM) { 703 trace_scsi_disk_emulate_vpd_page_b0_not_supported(); 704 return -1; 705 } 706 bl.wsnz = 1; 707 bl.unmap_sectors = 708 s->qdev.conf.discard_granularity / s->qdev.blocksize; 709 bl.min_io_size = 710 s->qdev.conf.min_io_size / s->qdev.blocksize; 711 bl.opt_io_size = 712 s->qdev.conf.opt_io_size / s->qdev.blocksize; 713 bl.max_unmap_sectors = 714 s->max_unmap_size / s->qdev.blocksize; 715 bl.max_io_sectors = 716 s->max_io_size / s->qdev.blocksize; 717 /* 255 descriptors fit in 4 KiB with an 8-byte header */ 718 bl.max_unmap_descr = 255; 719 720 if (s->qdev.type == TYPE_DISK) { 721 int max_transfer_blk = blk_get_max_transfer(s->qdev.conf.blk); 722 int max_io_sectors_blk = 723 max_transfer_blk / s->qdev.blocksize; 724 725 bl.max_io_sectors = 726 MIN_NON_ZERO(max_io_sectors_blk, bl.max_io_sectors); 727 } 728 buflen += scsi_emulate_block_limits(outbuf + buflen, &bl); 729 break; 730 } 731 case 0xb1: /* block device characteristics */ 732 { 733 buflen = 0x40; 734 outbuf[4] = (s->rotation_rate >> 8) & 0xff; 735 outbuf[5] = s->rotation_rate & 0xff; 736 outbuf[6] = 0; /* PRODUCT TYPE */ 737 outbuf[7] = 0; /* WABEREQ | WACEREQ | NOMINAL FORM FACTOR */ 738 outbuf[8] = 0; /* VBULS */ 739 break; 740 } 741 case 0xb2: /* thin provisioning */ 742 { 743 buflen = 8; 744 outbuf[4] = 0; 745 outbuf[5] = 0xe0; /* unmap & write_same 10/16 all supported */ 746 outbuf[6] = s->qdev.conf.discard_granularity ? 2 : 1; 747 outbuf[7] = 0; 748 break; 749 } 750 default: 751 return -1; 752 } 753 /* done with EVPD */ 754 assert(buflen - start <= 255); 755 outbuf[start - 1] = buflen - start; 756 return buflen; 757 } 758 759 static int scsi_disk_emulate_inquiry(SCSIRequest *req, uint8_t *outbuf) 760 { 761 SCSIDiskState *s = DO_UPCAST(SCSIDiskState, qdev, req->dev); 762 int buflen = 0; 763 764 if (req->cmd.buf[1] & 0x1) { 765 /* Vital product data */ 766 return scsi_disk_emulate_vpd_page(req, outbuf); 767 } 768 769 /* Standard INQUIRY data */ 770 if (req->cmd.buf[2] != 0) { 771 return -1; 772 } 773 774 /* PAGE CODE == 0 */ 775 buflen = req->cmd.xfer; 776 if (buflen > SCSI_MAX_INQUIRY_LEN) { 777 buflen = SCSI_MAX_INQUIRY_LEN; 778 } 779 780 outbuf[0] = s->qdev.type & 0x1f; 781 outbuf[1] = (s->features & (1 << SCSI_DISK_F_REMOVABLE)) ? 0x80 : 0; 782 783 strpadcpy((char *) &outbuf[16], 16, s->product, ' '); 784 strpadcpy((char *) &outbuf[8], 8, s->vendor, ' '); 785 786 memset(&outbuf[32], 0, 4); 787 memcpy(&outbuf[32], s->version, MIN(4, strlen(s->version))); 788 /* 789 * We claim conformance to SPC-3, which is required for guests 790 * to ask for modern features like READ CAPACITY(16) or the 791 * block characteristics VPD page by default. Not all of SPC-3 792 * is actually implemented, but we're good enough. 793 */ 794 outbuf[2] = s->qdev.default_scsi_version; 795 outbuf[3] = 2 | 0x10; /* Format 2, HiSup */ 796 797 if (buflen > 36) { 798 outbuf[4] = buflen - 5; /* Additional Length = (Len - 1) - 4 */ 799 } else { 800 /* If the allocation length of CDB is too small, 801 the additional length is not adjusted */ 802 outbuf[4] = 36 - 5; 803 } 804 805 /* Sync data transfer and TCQ. */ 806 outbuf[7] = 0x10 | (req->bus->info->tcq ? 0x02 : 0); 807 return buflen; 808 } 809 810 static inline bool media_is_dvd(SCSIDiskState *s) 811 { 812 uint64_t nb_sectors; 813 if (s->qdev.type != TYPE_ROM) { 814 return false; 815 } 816 if (!blk_is_available(s->qdev.conf.blk)) { 817 return false; 818 } 819 blk_get_geometry(s->qdev.conf.blk, &nb_sectors); 820 return nb_sectors > CD_MAX_SECTORS; 821 } 822 823 static inline bool media_is_cd(SCSIDiskState *s) 824 { 825 uint64_t nb_sectors; 826 if (s->qdev.type != TYPE_ROM) { 827 return false; 828 } 829 if (!blk_is_available(s->qdev.conf.blk)) { 830 return false; 831 } 832 blk_get_geometry(s->qdev.conf.blk, &nb_sectors); 833 return nb_sectors <= CD_MAX_SECTORS; 834 } 835 836 static int scsi_read_disc_information(SCSIDiskState *s, SCSIDiskReq *r, 837 uint8_t *outbuf) 838 { 839 uint8_t type = r->req.cmd.buf[1] & 7; 840 841 if (s->qdev.type != TYPE_ROM) { 842 return -1; 843 } 844 845 /* Types 1/2 are only defined for Blu-Ray. */ 846 if (type != 0) { 847 scsi_check_condition(r, SENSE_CODE(INVALID_FIELD)); 848 return -1; 849 } 850 851 memset(outbuf, 0, 34); 852 outbuf[1] = 32; 853 outbuf[2] = 0xe; /* last session complete, disc finalized */ 854 outbuf[3] = 1; /* first track on disc */ 855 outbuf[4] = 1; /* # of sessions */ 856 outbuf[5] = 1; /* first track of last session */ 857 outbuf[6] = 1; /* last track of last session */ 858 outbuf[7] = 0x20; /* unrestricted use */ 859 outbuf[8] = 0x00; /* CD-ROM or DVD-ROM */ 860 /* 9-10-11: most significant byte corresponding bytes 4-5-6 */ 861 /* 12-23: not meaningful for CD-ROM or DVD-ROM */ 862 /* 24-31: disc bar code */ 863 /* 32: disc application code */ 864 /* 33: number of OPC tables */ 865 866 return 34; 867 } 868 869 static int scsi_read_dvd_structure(SCSIDiskState *s, SCSIDiskReq *r, 870 uint8_t *outbuf) 871 { 872 static const int rds_caps_size[5] = { 873 [0] = 2048 + 4, 874 [1] = 4 + 4, 875 [3] = 188 + 4, 876 [4] = 2048 + 4, 877 }; 878 879 uint8_t media = r->req.cmd.buf[1]; 880 uint8_t layer = r->req.cmd.buf[6]; 881 uint8_t format = r->req.cmd.buf[7]; 882 int size = -1; 883 884 if (s->qdev.type != TYPE_ROM) { 885 return -1; 886 } 887 if (media != 0) { 888 scsi_check_condition(r, SENSE_CODE(INVALID_FIELD)); 889 return -1; 890 } 891 892 if (format != 0xff) { 893 if (!blk_is_available(s->qdev.conf.blk)) { 894 scsi_check_condition(r, SENSE_CODE(NO_MEDIUM)); 895 return -1; 896 } 897 if (media_is_cd(s)) { 898 scsi_check_condition(r, SENSE_CODE(INCOMPATIBLE_FORMAT)); 899 return -1; 900 } 901 if (format >= ARRAY_SIZE(rds_caps_size)) { 902 return -1; 903 } 904 size = rds_caps_size[format]; 905 memset(outbuf, 0, size); 906 } 907 908 switch (format) { 909 case 0x00: { 910 /* Physical format information */ 911 uint64_t nb_sectors; 912 if (layer != 0) { 913 goto fail; 914 } 915 blk_get_geometry(s->qdev.conf.blk, &nb_sectors); 916 917 outbuf[4] = 1; /* DVD-ROM, part version 1 */ 918 outbuf[5] = 0xf; /* 120mm disc, minimum rate unspecified */ 919 outbuf[6] = 1; /* one layer, read-only (per MMC-2 spec) */ 920 outbuf[7] = 0; /* default densities */ 921 922 stl_be_p(&outbuf[12], (nb_sectors >> 2) - 1); /* end sector */ 923 stl_be_p(&outbuf[16], (nb_sectors >> 2) - 1); /* l0 end sector */ 924 break; 925 } 926 927 case 0x01: /* DVD copyright information, all zeros */ 928 break; 929 930 case 0x03: /* BCA information - invalid field for no BCA info */ 931 return -1; 932 933 case 0x04: /* DVD disc manufacturing information, all zeros */ 934 break; 935 936 case 0xff: { /* List capabilities */ 937 int i; 938 size = 4; 939 for (i = 0; i < ARRAY_SIZE(rds_caps_size); i++) { 940 if (!rds_caps_size[i]) { 941 continue; 942 } 943 outbuf[size] = i; 944 outbuf[size + 1] = 0x40; /* Not writable, readable */ 945 stw_be_p(&outbuf[size + 2], rds_caps_size[i]); 946 size += 4; 947 } 948 break; 949 } 950 951 default: 952 return -1; 953 } 954 955 /* Size of buffer, not including 2 byte size field */ 956 stw_be_p(outbuf, size - 2); 957 return size; 958 959 fail: 960 return -1; 961 } 962 963 static int scsi_event_status_media(SCSIDiskState *s, uint8_t *outbuf) 964 { 965 uint8_t event_code, media_status; 966 967 media_status = 0; 968 if (s->tray_open) { 969 media_status = MS_TRAY_OPEN; 970 } else if (blk_is_inserted(s->qdev.conf.blk)) { 971 media_status = MS_MEDIA_PRESENT; 972 } 973 974 /* Event notification descriptor */ 975 event_code = MEC_NO_CHANGE; 976 if (media_status != MS_TRAY_OPEN) { 977 if (s->media_event) { 978 event_code = MEC_NEW_MEDIA; 979 s->media_event = false; 980 } else if (s->eject_request) { 981 event_code = MEC_EJECT_REQUESTED; 982 s->eject_request = false; 983 } 984 } 985 986 outbuf[0] = event_code; 987 outbuf[1] = media_status; 988 989 /* These fields are reserved, just clear them. */ 990 outbuf[2] = 0; 991 outbuf[3] = 0; 992 return 4; 993 } 994 995 static int scsi_get_event_status_notification(SCSIDiskState *s, SCSIDiskReq *r, 996 uint8_t *outbuf) 997 { 998 int size; 999 uint8_t *buf = r->req.cmd.buf; 1000 uint8_t notification_class_request = buf[4]; 1001 if (s->qdev.type != TYPE_ROM) { 1002 return -1; 1003 } 1004 if ((buf[1] & 1) == 0) { 1005 /* asynchronous */ 1006 return -1; 1007 } 1008 1009 size = 4; 1010 outbuf[0] = outbuf[1] = 0; 1011 outbuf[3] = 1 << GESN_MEDIA; /* supported events */ 1012 if (notification_class_request & (1 << GESN_MEDIA)) { 1013 outbuf[2] = GESN_MEDIA; 1014 size += scsi_event_status_media(s, &outbuf[size]); 1015 } else { 1016 outbuf[2] = 0x80; 1017 } 1018 stw_be_p(outbuf, size - 4); 1019 return size; 1020 } 1021 1022 static int scsi_get_configuration(SCSIDiskState *s, uint8_t *outbuf) 1023 { 1024 int current; 1025 1026 if (s->qdev.type != TYPE_ROM) { 1027 return -1; 1028 } 1029 1030 if (media_is_dvd(s)) { 1031 current = MMC_PROFILE_DVD_ROM; 1032 } else if (media_is_cd(s)) { 1033 current = MMC_PROFILE_CD_ROM; 1034 } else { 1035 current = MMC_PROFILE_NONE; 1036 } 1037 1038 memset(outbuf, 0, 40); 1039 stl_be_p(&outbuf[0], 36); /* Bytes after the data length field */ 1040 stw_be_p(&outbuf[6], current); 1041 /* outbuf[8] - outbuf[19]: Feature 0 - Profile list */ 1042 outbuf[10] = 0x03; /* persistent, current */ 1043 outbuf[11] = 8; /* two profiles */ 1044 stw_be_p(&outbuf[12], MMC_PROFILE_DVD_ROM); 1045 outbuf[14] = (current == MMC_PROFILE_DVD_ROM); 1046 stw_be_p(&outbuf[16], MMC_PROFILE_CD_ROM); 1047 outbuf[18] = (current == MMC_PROFILE_CD_ROM); 1048 /* outbuf[20] - outbuf[31]: Feature 1 - Core feature */ 1049 stw_be_p(&outbuf[20], 1); 1050 outbuf[22] = 0x08 | 0x03; /* version 2, persistent, current */ 1051 outbuf[23] = 8; 1052 stl_be_p(&outbuf[24], 1); /* SCSI */ 1053 outbuf[28] = 1; /* DBE = 1, mandatory */ 1054 /* outbuf[32] - outbuf[39]: Feature 3 - Removable media feature */ 1055 stw_be_p(&outbuf[32], 3); 1056 outbuf[34] = 0x08 | 0x03; /* version 2, persistent, current */ 1057 outbuf[35] = 4; 1058 outbuf[36] = 0x39; /* tray, load=1, eject=1, unlocked at powerup, lock=1 */ 1059 /* TODO: Random readable, CD read, DVD read, drive serial number, 1060 power management */ 1061 return 40; 1062 } 1063 1064 static int scsi_emulate_mechanism_status(SCSIDiskState *s, uint8_t *outbuf) 1065 { 1066 if (s->qdev.type != TYPE_ROM) { 1067 return -1; 1068 } 1069 memset(outbuf, 0, 8); 1070 outbuf[5] = 1; /* CD-ROM */ 1071 return 8; 1072 } 1073 1074 static int mode_sense_page(SCSIDiskState *s, int page, uint8_t **p_outbuf, 1075 int page_control) 1076 { 1077 static const int mode_sense_valid[0x3f] = { 1078 [MODE_PAGE_HD_GEOMETRY] = (1 << TYPE_DISK), 1079 [MODE_PAGE_FLEXIBLE_DISK_GEOMETRY] = (1 << TYPE_DISK), 1080 [MODE_PAGE_CACHING] = (1 << TYPE_DISK) | (1 << TYPE_ROM), 1081 [MODE_PAGE_R_W_ERROR] = (1 << TYPE_DISK) | (1 << TYPE_ROM), 1082 [MODE_PAGE_AUDIO_CTL] = (1 << TYPE_ROM), 1083 [MODE_PAGE_CAPABILITIES] = (1 << TYPE_ROM), 1084 }; 1085 1086 uint8_t *p = *p_outbuf + 2; 1087 int length; 1088 1089 if ((mode_sense_valid[page] & (1 << s->qdev.type)) == 0) { 1090 return -1; 1091 } 1092 1093 /* 1094 * If Changeable Values are requested, a mask denoting those mode parameters 1095 * that are changeable shall be returned. As we currently don't support 1096 * parameter changes via MODE_SELECT all bits are returned set to zero. 1097 * The buffer was already menset to zero by the caller of this function. 1098 * 1099 * The offsets here are off by two compared to the descriptions in the 1100 * SCSI specs, because those include a 2-byte header. This is unfortunate, 1101 * but it is done so that offsets are consistent within our implementation 1102 * of MODE SENSE and MODE SELECT. MODE SELECT has to deal with both 1103 * 2-byte and 4-byte headers. 1104 */ 1105 switch (page) { 1106 case MODE_PAGE_HD_GEOMETRY: 1107 length = 0x16; 1108 if (page_control == 1) { /* Changeable Values */ 1109 break; 1110 } 1111 /* if a geometry hint is available, use it */ 1112 p[0] = (s->qdev.conf.cyls >> 16) & 0xff; 1113 p[1] = (s->qdev.conf.cyls >> 8) & 0xff; 1114 p[2] = s->qdev.conf.cyls & 0xff; 1115 p[3] = s->qdev.conf.heads & 0xff; 1116 /* Write precomp start cylinder, disabled */ 1117 p[4] = (s->qdev.conf.cyls >> 16) & 0xff; 1118 p[5] = (s->qdev.conf.cyls >> 8) & 0xff; 1119 p[6] = s->qdev.conf.cyls & 0xff; 1120 /* Reduced current start cylinder, disabled */ 1121 p[7] = (s->qdev.conf.cyls >> 16) & 0xff; 1122 p[8] = (s->qdev.conf.cyls >> 8) & 0xff; 1123 p[9] = s->qdev.conf.cyls & 0xff; 1124 /* Device step rate [ns], 200ns */ 1125 p[10] = 0; 1126 p[11] = 200; 1127 /* Landing zone cylinder */ 1128 p[12] = 0xff; 1129 p[13] = 0xff; 1130 p[14] = 0xff; 1131 /* Medium rotation rate [rpm], 5400 rpm */ 1132 p[18] = (5400 >> 8) & 0xff; 1133 p[19] = 5400 & 0xff; 1134 break; 1135 1136 case MODE_PAGE_FLEXIBLE_DISK_GEOMETRY: 1137 length = 0x1e; 1138 if (page_control == 1) { /* Changeable Values */ 1139 break; 1140 } 1141 /* Transfer rate [kbit/s], 5Mbit/s */ 1142 p[0] = 5000 >> 8; 1143 p[1] = 5000 & 0xff; 1144 /* if a geometry hint is available, use it */ 1145 p[2] = s->qdev.conf.heads & 0xff; 1146 p[3] = s->qdev.conf.secs & 0xff; 1147 p[4] = s->qdev.blocksize >> 8; 1148 p[6] = (s->qdev.conf.cyls >> 8) & 0xff; 1149 p[7] = s->qdev.conf.cyls & 0xff; 1150 /* Write precomp start cylinder, disabled */ 1151 p[8] = (s->qdev.conf.cyls >> 8) & 0xff; 1152 p[9] = s->qdev.conf.cyls & 0xff; 1153 /* Reduced current start cylinder, disabled */ 1154 p[10] = (s->qdev.conf.cyls >> 8) & 0xff; 1155 p[11] = s->qdev.conf.cyls & 0xff; 1156 /* Device step rate [100us], 100us */ 1157 p[12] = 0; 1158 p[13] = 1; 1159 /* Device step pulse width [us], 1us */ 1160 p[14] = 1; 1161 /* Device head settle delay [100us], 100us */ 1162 p[15] = 0; 1163 p[16] = 1; 1164 /* Motor on delay [0.1s], 0.1s */ 1165 p[17] = 1; 1166 /* Motor off delay [0.1s], 0.1s */ 1167 p[18] = 1; 1168 /* Medium rotation rate [rpm], 5400 rpm */ 1169 p[26] = (5400 >> 8) & 0xff; 1170 p[27] = 5400 & 0xff; 1171 break; 1172 1173 case MODE_PAGE_CACHING: 1174 length = 0x12; 1175 if (page_control == 1 || /* Changeable Values */ 1176 blk_enable_write_cache(s->qdev.conf.blk)) { 1177 p[0] = 4; /* WCE */ 1178 } 1179 break; 1180 1181 case MODE_PAGE_R_W_ERROR: 1182 length = 10; 1183 if (page_control == 1) { /* Changeable Values */ 1184 break; 1185 } 1186 p[0] = 0x80; /* Automatic Write Reallocation Enabled */ 1187 if (s->qdev.type == TYPE_ROM) { 1188 p[1] = 0x20; /* Read Retry Count */ 1189 } 1190 break; 1191 1192 case MODE_PAGE_AUDIO_CTL: 1193 length = 14; 1194 break; 1195 1196 case MODE_PAGE_CAPABILITIES: 1197 length = 0x14; 1198 if (page_control == 1) { /* Changeable Values */ 1199 break; 1200 } 1201 1202 p[0] = 0x3b; /* CD-R & CD-RW read */ 1203 p[1] = 0; /* Writing not supported */ 1204 p[2] = 0x7f; /* Audio, composite, digital out, 1205 mode 2 form 1&2, multi session */ 1206 p[3] = 0xff; /* CD DA, DA accurate, RW supported, 1207 RW corrected, C2 errors, ISRC, 1208 UPC, Bar code */ 1209 p[4] = 0x2d | (s->tray_locked ? 2 : 0); 1210 /* Locking supported, jumper present, eject, tray */ 1211 p[5] = 0; /* no volume & mute control, no 1212 changer */ 1213 p[6] = (50 * 176) >> 8; /* 50x read speed */ 1214 p[7] = (50 * 176) & 0xff; 1215 p[8] = 2 >> 8; /* Two volume levels */ 1216 p[9] = 2 & 0xff; 1217 p[10] = 2048 >> 8; /* 2M buffer */ 1218 p[11] = 2048 & 0xff; 1219 p[12] = (16 * 176) >> 8; /* 16x read speed current */ 1220 p[13] = (16 * 176) & 0xff; 1221 p[16] = (16 * 176) >> 8; /* 16x write speed */ 1222 p[17] = (16 * 176) & 0xff; 1223 p[18] = (16 * 176) >> 8; /* 16x write speed current */ 1224 p[19] = (16 * 176) & 0xff; 1225 break; 1226 1227 default: 1228 return -1; 1229 } 1230 1231 assert(length < 256); 1232 (*p_outbuf)[0] = page; 1233 (*p_outbuf)[1] = length; 1234 *p_outbuf += length + 2; 1235 return length + 2; 1236 } 1237 1238 static int scsi_disk_emulate_mode_sense(SCSIDiskReq *r, uint8_t *outbuf) 1239 { 1240 SCSIDiskState *s = DO_UPCAST(SCSIDiskState, qdev, r->req.dev); 1241 uint64_t nb_sectors; 1242 bool dbd; 1243 int page, buflen, ret, page_control; 1244 uint8_t *p; 1245 uint8_t dev_specific_param; 1246 1247 dbd = (r->req.cmd.buf[1] & 0x8) != 0; 1248 page = r->req.cmd.buf[2] & 0x3f; 1249 page_control = (r->req.cmd.buf[2] & 0xc0) >> 6; 1250 1251 trace_scsi_disk_emulate_mode_sense((r->req.cmd.buf[0] == MODE_SENSE) ? 6 : 1252 10, page, r->req.cmd.xfer, page_control); 1253 memset(outbuf, 0, r->req.cmd.xfer); 1254 p = outbuf; 1255 1256 if (s->qdev.type == TYPE_DISK) { 1257 dev_specific_param = s->features & (1 << SCSI_DISK_F_DPOFUA) ? 0x10 : 0; 1258 if (blk_is_read_only(s->qdev.conf.blk)) { 1259 dev_specific_param |= 0x80; /* Readonly. */ 1260 } 1261 } else { 1262 /* MMC prescribes that CD/DVD drives have no block descriptors, 1263 * and defines no device-specific parameter. */ 1264 dev_specific_param = 0x00; 1265 dbd = true; 1266 } 1267 1268 if (r->req.cmd.buf[0] == MODE_SENSE) { 1269 p[1] = 0; /* Default media type. */ 1270 p[2] = dev_specific_param; 1271 p[3] = 0; /* Block descriptor length. */ 1272 p += 4; 1273 } else { /* MODE_SENSE_10 */ 1274 p[2] = 0; /* Default media type. */ 1275 p[3] = dev_specific_param; 1276 p[6] = p[7] = 0; /* Block descriptor length. */ 1277 p += 8; 1278 } 1279 1280 blk_get_geometry(s->qdev.conf.blk, &nb_sectors); 1281 if (!dbd && nb_sectors) { 1282 if (r->req.cmd.buf[0] == MODE_SENSE) { 1283 outbuf[3] = 8; /* Block descriptor length */ 1284 } else { /* MODE_SENSE_10 */ 1285 outbuf[7] = 8; /* Block descriptor length */ 1286 } 1287 nb_sectors /= (s->qdev.blocksize / BDRV_SECTOR_SIZE); 1288 if (nb_sectors > 0xffffff) { 1289 nb_sectors = 0; 1290 } 1291 p[0] = 0; /* media density code */ 1292 p[1] = (nb_sectors >> 16) & 0xff; 1293 p[2] = (nb_sectors >> 8) & 0xff; 1294 p[3] = nb_sectors & 0xff; 1295 p[4] = 0; /* reserved */ 1296 p[5] = 0; /* bytes 5-7 are the sector size in bytes */ 1297 p[6] = s->qdev.blocksize >> 8; 1298 p[7] = 0; 1299 p += 8; 1300 } 1301 1302 if (page_control == 3) { 1303 /* Saved Values */ 1304 scsi_check_condition(r, SENSE_CODE(SAVING_PARAMS_NOT_SUPPORTED)); 1305 return -1; 1306 } 1307 1308 if (page == 0x3f) { 1309 for (page = 0; page <= 0x3e; page++) { 1310 mode_sense_page(s, page, &p, page_control); 1311 } 1312 } else { 1313 ret = mode_sense_page(s, page, &p, page_control); 1314 if (ret == -1) { 1315 return -1; 1316 } 1317 } 1318 1319 buflen = p - outbuf; 1320 /* 1321 * The mode data length field specifies the length in bytes of the 1322 * following data that is available to be transferred. The mode data 1323 * length does not include itself. 1324 */ 1325 if (r->req.cmd.buf[0] == MODE_SENSE) { 1326 outbuf[0] = buflen - 1; 1327 } else { /* MODE_SENSE_10 */ 1328 outbuf[0] = ((buflen - 2) >> 8) & 0xff; 1329 outbuf[1] = (buflen - 2) & 0xff; 1330 } 1331 return buflen; 1332 } 1333 1334 static int scsi_disk_emulate_read_toc(SCSIRequest *req, uint8_t *outbuf) 1335 { 1336 SCSIDiskState *s = DO_UPCAST(SCSIDiskState, qdev, req->dev); 1337 int start_track, format, msf, toclen; 1338 uint64_t nb_sectors; 1339 1340 msf = req->cmd.buf[1] & 2; 1341 format = req->cmd.buf[2] & 0xf; 1342 start_track = req->cmd.buf[6]; 1343 blk_get_geometry(s->qdev.conf.blk, &nb_sectors); 1344 trace_scsi_disk_emulate_read_toc(start_track, format, msf >> 1); 1345 nb_sectors /= s->qdev.blocksize / BDRV_SECTOR_SIZE; 1346 switch (format) { 1347 case 0: 1348 toclen = cdrom_read_toc(nb_sectors, outbuf, msf, start_track); 1349 break; 1350 case 1: 1351 /* multi session : only a single session defined */ 1352 toclen = 12; 1353 memset(outbuf, 0, 12); 1354 outbuf[1] = 0x0a; 1355 outbuf[2] = 0x01; 1356 outbuf[3] = 0x01; 1357 break; 1358 case 2: 1359 toclen = cdrom_read_toc_raw(nb_sectors, outbuf, msf, start_track); 1360 break; 1361 default: 1362 return -1; 1363 } 1364 return toclen; 1365 } 1366 1367 static int scsi_disk_emulate_start_stop(SCSIDiskReq *r) 1368 { 1369 SCSIRequest *req = &r->req; 1370 SCSIDiskState *s = DO_UPCAST(SCSIDiskState, qdev, req->dev); 1371 bool start = req->cmd.buf[4] & 1; 1372 bool loej = req->cmd.buf[4] & 2; /* load on start, eject on !start */ 1373 int pwrcnd = req->cmd.buf[4] & 0xf0; 1374 1375 if (pwrcnd) { 1376 /* eject/load only happens for power condition == 0 */ 1377 return 0; 1378 } 1379 1380 if ((s->features & (1 << SCSI_DISK_F_REMOVABLE)) && loej) { 1381 if (!start && !s->tray_open && s->tray_locked) { 1382 scsi_check_condition(r, 1383 blk_is_inserted(s->qdev.conf.blk) 1384 ? SENSE_CODE(ILLEGAL_REQ_REMOVAL_PREVENTED) 1385 : SENSE_CODE(NOT_READY_REMOVAL_PREVENTED)); 1386 return -1; 1387 } 1388 1389 if (s->tray_open != !start) { 1390 blk_eject(s->qdev.conf.blk, !start); 1391 s->tray_open = !start; 1392 } 1393 } 1394 return 0; 1395 } 1396 1397 static void scsi_disk_emulate_read_data(SCSIRequest *req) 1398 { 1399 SCSIDiskReq *r = DO_UPCAST(SCSIDiskReq, req, req); 1400 int buflen = r->iov.iov_len; 1401 1402 if (buflen) { 1403 trace_scsi_disk_emulate_read_data(buflen); 1404 r->iov.iov_len = 0; 1405 r->started = true; 1406 scsi_req_data(&r->req, buflen); 1407 return; 1408 } 1409 1410 /* This also clears the sense buffer for REQUEST SENSE. */ 1411 scsi_req_complete(&r->req, GOOD); 1412 } 1413 1414 static int scsi_disk_check_mode_select(SCSIDiskState *s, int page, 1415 uint8_t *inbuf, int inlen) 1416 { 1417 uint8_t mode_current[SCSI_MAX_MODE_LEN]; 1418 uint8_t mode_changeable[SCSI_MAX_MODE_LEN]; 1419 uint8_t *p; 1420 int len, expected_len, changeable_len, i; 1421 1422 /* The input buffer does not include the page header, so it is 1423 * off by 2 bytes. 1424 */ 1425 expected_len = inlen + 2; 1426 if (expected_len > SCSI_MAX_MODE_LEN) { 1427 return -1; 1428 } 1429 1430 p = mode_current; 1431 memset(mode_current, 0, inlen + 2); 1432 len = mode_sense_page(s, page, &p, 0); 1433 if (len < 0 || len != expected_len) { 1434 return -1; 1435 } 1436 1437 p = mode_changeable; 1438 memset(mode_changeable, 0, inlen + 2); 1439 changeable_len = mode_sense_page(s, page, &p, 1); 1440 assert(changeable_len == len); 1441 1442 /* Check that unchangeable bits are the same as what MODE SENSE 1443 * would return. 1444 */ 1445 for (i = 2; i < len; i++) { 1446 if (((mode_current[i] ^ inbuf[i - 2]) & ~mode_changeable[i]) != 0) { 1447 return -1; 1448 } 1449 } 1450 return 0; 1451 } 1452 1453 static void scsi_disk_apply_mode_select(SCSIDiskState *s, int page, uint8_t *p) 1454 { 1455 switch (page) { 1456 case MODE_PAGE_CACHING: 1457 blk_set_enable_write_cache(s->qdev.conf.blk, (p[0] & 4) != 0); 1458 break; 1459 1460 default: 1461 break; 1462 } 1463 } 1464 1465 static int mode_select_pages(SCSIDiskReq *r, uint8_t *p, int len, bool change) 1466 { 1467 SCSIDiskState *s = DO_UPCAST(SCSIDiskState, qdev, r->req.dev); 1468 1469 while (len > 0) { 1470 int page, subpage, page_len; 1471 1472 /* Parse both possible formats for the mode page headers. */ 1473 page = p[0] & 0x3f; 1474 if (p[0] & 0x40) { 1475 if (len < 4) { 1476 goto invalid_param_len; 1477 } 1478 subpage = p[1]; 1479 page_len = lduw_be_p(&p[2]); 1480 p += 4; 1481 len -= 4; 1482 } else { 1483 if (len < 2) { 1484 goto invalid_param_len; 1485 } 1486 subpage = 0; 1487 page_len = p[1]; 1488 p += 2; 1489 len -= 2; 1490 } 1491 1492 if (subpage) { 1493 goto invalid_param; 1494 } 1495 if (page_len > len) { 1496 goto invalid_param_len; 1497 } 1498 1499 if (!change) { 1500 if (scsi_disk_check_mode_select(s, page, p, page_len) < 0) { 1501 goto invalid_param; 1502 } 1503 } else { 1504 scsi_disk_apply_mode_select(s, page, p); 1505 } 1506 1507 p += page_len; 1508 len -= page_len; 1509 } 1510 return 0; 1511 1512 invalid_param: 1513 scsi_check_condition(r, SENSE_CODE(INVALID_PARAM)); 1514 return -1; 1515 1516 invalid_param_len: 1517 scsi_check_condition(r, SENSE_CODE(INVALID_PARAM_LEN)); 1518 return -1; 1519 } 1520 1521 static void scsi_disk_emulate_mode_select(SCSIDiskReq *r, uint8_t *inbuf) 1522 { 1523 SCSIDiskState *s = DO_UPCAST(SCSIDiskState, qdev, r->req.dev); 1524 uint8_t *p = inbuf; 1525 int cmd = r->req.cmd.buf[0]; 1526 int len = r->req.cmd.xfer; 1527 int hdr_len = (cmd == MODE_SELECT ? 4 : 8); 1528 int bd_len; 1529 int pass; 1530 1531 /* We only support PF=1, SP=0. */ 1532 if ((r->req.cmd.buf[1] & 0x11) != 0x10) { 1533 goto invalid_field; 1534 } 1535 1536 if (len < hdr_len) { 1537 goto invalid_param_len; 1538 } 1539 1540 bd_len = (cmd == MODE_SELECT ? p[3] : lduw_be_p(&p[6])); 1541 len -= hdr_len; 1542 p += hdr_len; 1543 if (len < bd_len) { 1544 goto invalid_param_len; 1545 } 1546 if (bd_len != 0 && bd_len != 8) { 1547 goto invalid_param; 1548 } 1549 1550 len -= bd_len; 1551 p += bd_len; 1552 1553 /* Ensure no change is made if there is an error! */ 1554 for (pass = 0; pass < 2; pass++) { 1555 if (mode_select_pages(r, p, len, pass == 1) < 0) { 1556 assert(pass == 0); 1557 return; 1558 } 1559 } 1560 if (!blk_enable_write_cache(s->qdev.conf.blk)) { 1561 /* The request is used as the AIO opaque value, so add a ref. */ 1562 scsi_req_ref(&r->req); 1563 block_acct_start(blk_get_stats(s->qdev.conf.blk), &r->acct, 0, 1564 BLOCK_ACCT_FLUSH); 1565 r->req.aiocb = blk_aio_flush(s->qdev.conf.blk, scsi_aio_complete, r); 1566 return; 1567 } 1568 1569 scsi_req_complete(&r->req, GOOD); 1570 return; 1571 1572 invalid_param: 1573 scsi_check_condition(r, SENSE_CODE(INVALID_PARAM)); 1574 return; 1575 1576 invalid_param_len: 1577 scsi_check_condition(r, SENSE_CODE(INVALID_PARAM_LEN)); 1578 return; 1579 1580 invalid_field: 1581 scsi_check_condition(r, SENSE_CODE(INVALID_FIELD)); 1582 } 1583 1584 static inline bool check_lba_range(SCSIDiskState *s, 1585 uint64_t sector_num, uint32_t nb_sectors) 1586 { 1587 /* 1588 * The first line tests that no overflow happens when computing the last 1589 * sector. The second line tests that the last accessed sector is in 1590 * range. 1591 * 1592 * Careful, the computations should not underflow for nb_sectors == 0, 1593 * and a 0-block read to the first LBA beyond the end of device is 1594 * valid. 1595 */ 1596 return (sector_num <= sector_num + nb_sectors && 1597 sector_num + nb_sectors <= s->qdev.max_lba + 1); 1598 } 1599 1600 typedef struct UnmapCBData { 1601 SCSIDiskReq *r; 1602 uint8_t *inbuf; 1603 int count; 1604 } UnmapCBData; 1605 1606 static void scsi_unmap_complete(void *opaque, int ret); 1607 1608 static void scsi_unmap_complete_noio(UnmapCBData *data, int ret) 1609 { 1610 SCSIDiskReq *r = data->r; 1611 SCSIDiskState *s = DO_UPCAST(SCSIDiskState, qdev, r->req.dev); 1612 1613 assert(r->req.aiocb == NULL); 1614 1615 if (data->count > 0) { 1616 r->sector = ldq_be_p(&data->inbuf[0]) 1617 * (s->qdev.blocksize / BDRV_SECTOR_SIZE); 1618 r->sector_count = (ldl_be_p(&data->inbuf[8]) & 0xffffffffULL) 1619 * (s->qdev.blocksize / BDRV_SECTOR_SIZE); 1620 if (!check_lba_range(s, r->sector, r->sector_count)) { 1621 block_acct_invalid(blk_get_stats(s->qdev.conf.blk), 1622 BLOCK_ACCT_UNMAP); 1623 scsi_check_condition(r, SENSE_CODE(LBA_OUT_OF_RANGE)); 1624 goto done; 1625 } 1626 1627 block_acct_start(blk_get_stats(s->qdev.conf.blk), &r->acct, 1628 r->sector_count * BDRV_SECTOR_SIZE, 1629 BLOCK_ACCT_UNMAP); 1630 1631 r->req.aiocb = blk_aio_pdiscard(s->qdev.conf.blk, 1632 r->sector * BDRV_SECTOR_SIZE, 1633 r->sector_count * BDRV_SECTOR_SIZE, 1634 scsi_unmap_complete, data); 1635 data->count--; 1636 data->inbuf += 16; 1637 return; 1638 } 1639 1640 scsi_req_complete(&r->req, GOOD); 1641 1642 done: 1643 scsi_req_unref(&r->req); 1644 g_free(data); 1645 } 1646 1647 static void scsi_unmap_complete(void *opaque, int ret) 1648 { 1649 UnmapCBData *data = opaque; 1650 SCSIDiskReq *r = data->r; 1651 SCSIDiskState *s = DO_UPCAST(SCSIDiskState, qdev, r->req.dev); 1652 1653 assert(r->req.aiocb != NULL); 1654 r->req.aiocb = NULL; 1655 1656 aio_context_acquire(blk_get_aio_context(s->qdev.conf.blk)); 1657 if (scsi_disk_req_check_error(r, ret, true)) { 1658 scsi_req_unref(&r->req); 1659 g_free(data); 1660 } else { 1661 block_acct_done(blk_get_stats(s->qdev.conf.blk), &r->acct); 1662 scsi_unmap_complete_noio(data, ret); 1663 } 1664 aio_context_release(blk_get_aio_context(s->qdev.conf.blk)); 1665 } 1666 1667 static void scsi_disk_emulate_unmap(SCSIDiskReq *r, uint8_t *inbuf) 1668 { 1669 SCSIDiskState *s = DO_UPCAST(SCSIDiskState, qdev, r->req.dev); 1670 uint8_t *p = inbuf; 1671 int len = r->req.cmd.xfer; 1672 UnmapCBData *data; 1673 1674 /* Reject ANCHOR=1. */ 1675 if (r->req.cmd.buf[1] & 0x1) { 1676 goto invalid_field; 1677 } 1678 1679 if (len < 8) { 1680 goto invalid_param_len; 1681 } 1682 if (len < lduw_be_p(&p[0]) + 2) { 1683 goto invalid_param_len; 1684 } 1685 if (len < lduw_be_p(&p[2]) + 8) { 1686 goto invalid_param_len; 1687 } 1688 if (lduw_be_p(&p[2]) & 15) { 1689 goto invalid_param_len; 1690 } 1691 1692 if (blk_is_read_only(s->qdev.conf.blk)) { 1693 block_acct_invalid(blk_get_stats(s->qdev.conf.blk), BLOCK_ACCT_UNMAP); 1694 scsi_check_condition(r, SENSE_CODE(WRITE_PROTECTED)); 1695 return; 1696 } 1697 1698 data = g_new0(UnmapCBData, 1); 1699 data->r = r; 1700 data->inbuf = &p[8]; 1701 data->count = lduw_be_p(&p[2]) >> 4; 1702 1703 /* The matching unref is in scsi_unmap_complete, before data is freed. */ 1704 scsi_req_ref(&r->req); 1705 scsi_unmap_complete_noio(data, 0); 1706 return; 1707 1708 invalid_param_len: 1709 block_acct_invalid(blk_get_stats(s->qdev.conf.blk), BLOCK_ACCT_UNMAP); 1710 scsi_check_condition(r, SENSE_CODE(INVALID_PARAM_LEN)); 1711 return; 1712 1713 invalid_field: 1714 block_acct_invalid(blk_get_stats(s->qdev.conf.blk), BLOCK_ACCT_UNMAP); 1715 scsi_check_condition(r, SENSE_CODE(INVALID_FIELD)); 1716 } 1717 1718 typedef struct WriteSameCBData { 1719 SCSIDiskReq *r; 1720 int64_t sector; 1721 int nb_sectors; 1722 QEMUIOVector qiov; 1723 struct iovec iov; 1724 } WriteSameCBData; 1725 1726 static void scsi_write_same_complete(void *opaque, int ret) 1727 { 1728 WriteSameCBData *data = opaque; 1729 SCSIDiskReq *r = data->r; 1730 SCSIDiskState *s = DO_UPCAST(SCSIDiskState, qdev, r->req.dev); 1731 1732 assert(r->req.aiocb != NULL); 1733 r->req.aiocb = NULL; 1734 aio_context_acquire(blk_get_aio_context(s->qdev.conf.blk)); 1735 if (scsi_disk_req_check_error(r, ret, true)) { 1736 goto done; 1737 } 1738 1739 block_acct_done(blk_get_stats(s->qdev.conf.blk), &r->acct); 1740 1741 data->nb_sectors -= data->iov.iov_len / BDRV_SECTOR_SIZE; 1742 data->sector += data->iov.iov_len / BDRV_SECTOR_SIZE; 1743 data->iov.iov_len = MIN(data->nb_sectors * BDRV_SECTOR_SIZE, 1744 data->iov.iov_len); 1745 if (data->iov.iov_len) { 1746 block_acct_start(blk_get_stats(s->qdev.conf.blk), &r->acct, 1747 data->iov.iov_len, BLOCK_ACCT_WRITE); 1748 /* Reinitialize qiov, to handle unaligned WRITE SAME request 1749 * where final qiov may need smaller size */ 1750 qemu_iovec_init_external(&data->qiov, &data->iov, 1); 1751 r->req.aiocb = blk_aio_pwritev(s->qdev.conf.blk, 1752 data->sector << BDRV_SECTOR_BITS, 1753 &data->qiov, 0, 1754 scsi_write_same_complete, data); 1755 aio_context_release(blk_get_aio_context(s->qdev.conf.blk)); 1756 return; 1757 } 1758 1759 scsi_req_complete(&r->req, GOOD); 1760 1761 done: 1762 scsi_req_unref(&r->req); 1763 qemu_vfree(data->iov.iov_base); 1764 g_free(data); 1765 aio_context_release(blk_get_aio_context(s->qdev.conf.blk)); 1766 } 1767 1768 static void scsi_disk_emulate_write_same(SCSIDiskReq *r, uint8_t *inbuf) 1769 { 1770 SCSIRequest *req = &r->req; 1771 SCSIDiskState *s = DO_UPCAST(SCSIDiskState, qdev, req->dev); 1772 uint32_t nb_sectors = scsi_data_cdb_xfer(r->req.cmd.buf); 1773 WriteSameCBData *data; 1774 uint8_t *buf; 1775 int i; 1776 1777 /* Fail if PBDATA=1 or LBDATA=1 or ANCHOR=1. */ 1778 if (nb_sectors == 0 || (req->cmd.buf[1] & 0x16)) { 1779 scsi_check_condition(r, SENSE_CODE(INVALID_FIELD)); 1780 return; 1781 } 1782 1783 if (blk_is_read_only(s->qdev.conf.blk)) { 1784 scsi_check_condition(r, SENSE_CODE(WRITE_PROTECTED)); 1785 return; 1786 } 1787 if (!check_lba_range(s, r->req.cmd.lba, nb_sectors)) { 1788 scsi_check_condition(r, SENSE_CODE(LBA_OUT_OF_RANGE)); 1789 return; 1790 } 1791 1792 if ((req->cmd.buf[1] & 0x1) || buffer_is_zero(inbuf, s->qdev.blocksize)) { 1793 int flags = (req->cmd.buf[1] & 0x8) ? BDRV_REQ_MAY_UNMAP : 0; 1794 1795 /* The request is used as the AIO opaque value, so add a ref. */ 1796 scsi_req_ref(&r->req); 1797 block_acct_start(blk_get_stats(s->qdev.conf.blk), &r->acct, 1798 nb_sectors * s->qdev.blocksize, 1799 BLOCK_ACCT_WRITE); 1800 r->req.aiocb = blk_aio_pwrite_zeroes(s->qdev.conf.blk, 1801 r->req.cmd.lba * s->qdev.blocksize, 1802 nb_sectors * s->qdev.blocksize, 1803 flags, scsi_aio_complete, r); 1804 return; 1805 } 1806 1807 data = g_new0(WriteSameCBData, 1); 1808 data->r = r; 1809 data->sector = r->req.cmd.lba * (s->qdev.blocksize / BDRV_SECTOR_SIZE); 1810 data->nb_sectors = nb_sectors * (s->qdev.blocksize / BDRV_SECTOR_SIZE); 1811 data->iov.iov_len = MIN(data->nb_sectors * BDRV_SECTOR_SIZE, 1812 SCSI_WRITE_SAME_MAX); 1813 data->iov.iov_base = buf = blk_blockalign(s->qdev.conf.blk, 1814 data->iov.iov_len); 1815 qemu_iovec_init_external(&data->qiov, &data->iov, 1); 1816 1817 for (i = 0; i < data->iov.iov_len; i += s->qdev.blocksize) { 1818 memcpy(&buf[i], inbuf, s->qdev.blocksize); 1819 } 1820 1821 scsi_req_ref(&r->req); 1822 block_acct_start(blk_get_stats(s->qdev.conf.blk), &r->acct, 1823 data->iov.iov_len, BLOCK_ACCT_WRITE); 1824 r->req.aiocb = blk_aio_pwritev(s->qdev.conf.blk, 1825 data->sector << BDRV_SECTOR_BITS, 1826 &data->qiov, 0, 1827 scsi_write_same_complete, data); 1828 } 1829 1830 static void scsi_disk_emulate_write_data(SCSIRequest *req) 1831 { 1832 SCSIDiskReq *r = DO_UPCAST(SCSIDiskReq, req, req); 1833 1834 if (r->iov.iov_len) { 1835 int buflen = r->iov.iov_len; 1836 trace_scsi_disk_emulate_write_data(buflen); 1837 r->iov.iov_len = 0; 1838 scsi_req_data(&r->req, buflen); 1839 return; 1840 } 1841 1842 switch (req->cmd.buf[0]) { 1843 case MODE_SELECT: 1844 case MODE_SELECT_10: 1845 /* This also clears the sense buffer for REQUEST SENSE. */ 1846 scsi_disk_emulate_mode_select(r, r->iov.iov_base); 1847 break; 1848 1849 case UNMAP: 1850 scsi_disk_emulate_unmap(r, r->iov.iov_base); 1851 break; 1852 1853 case VERIFY_10: 1854 case VERIFY_12: 1855 case VERIFY_16: 1856 if (r->req.status == -1) { 1857 scsi_check_condition(r, SENSE_CODE(INVALID_FIELD)); 1858 } 1859 break; 1860 1861 case WRITE_SAME_10: 1862 case WRITE_SAME_16: 1863 scsi_disk_emulate_write_same(r, r->iov.iov_base); 1864 break; 1865 1866 default: 1867 abort(); 1868 } 1869 } 1870 1871 static int32_t scsi_disk_emulate_command(SCSIRequest *req, uint8_t *buf) 1872 { 1873 SCSIDiskReq *r = DO_UPCAST(SCSIDiskReq, req, req); 1874 SCSIDiskState *s = DO_UPCAST(SCSIDiskState, qdev, req->dev); 1875 uint64_t nb_sectors; 1876 uint8_t *outbuf; 1877 int buflen; 1878 1879 switch (req->cmd.buf[0]) { 1880 case INQUIRY: 1881 case MODE_SENSE: 1882 case MODE_SENSE_10: 1883 case RESERVE: 1884 case RESERVE_10: 1885 case RELEASE: 1886 case RELEASE_10: 1887 case START_STOP: 1888 case ALLOW_MEDIUM_REMOVAL: 1889 case GET_CONFIGURATION: 1890 case GET_EVENT_STATUS_NOTIFICATION: 1891 case MECHANISM_STATUS: 1892 case REQUEST_SENSE: 1893 break; 1894 1895 default: 1896 if (!blk_is_available(s->qdev.conf.blk)) { 1897 scsi_check_condition(r, SENSE_CODE(NO_MEDIUM)); 1898 return 0; 1899 } 1900 break; 1901 } 1902 1903 /* 1904 * FIXME: we shouldn't return anything bigger than 4k, but the code 1905 * requires the buffer to be as big as req->cmd.xfer in several 1906 * places. So, do not allow CDBs with a very large ALLOCATION 1907 * LENGTH. The real fix would be to modify scsi_read_data and 1908 * dma_buf_read, so that they return data beyond the buflen 1909 * as all zeros. 1910 */ 1911 if (req->cmd.xfer > 65536) { 1912 goto illegal_request; 1913 } 1914 r->buflen = MAX(4096, req->cmd.xfer); 1915 1916 if (!r->iov.iov_base) { 1917 r->iov.iov_base = blk_blockalign(s->qdev.conf.blk, r->buflen); 1918 } 1919 1920 outbuf = r->iov.iov_base; 1921 memset(outbuf, 0, r->buflen); 1922 switch (req->cmd.buf[0]) { 1923 case TEST_UNIT_READY: 1924 assert(blk_is_available(s->qdev.conf.blk)); 1925 break; 1926 case INQUIRY: 1927 buflen = scsi_disk_emulate_inquiry(req, outbuf); 1928 if (buflen < 0) { 1929 goto illegal_request; 1930 } 1931 break; 1932 case MODE_SENSE: 1933 case MODE_SENSE_10: 1934 buflen = scsi_disk_emulate_mode_sense(r, outbuf); 1935 if (buflen < 0) { 1936 goto illegal_request; 1937 } 1938 break; 1939 case READ_TOC: 1940 buflen = scsi_disk_emulate_read_toc(req, outbuf); 1941 if (buflen < 0) { 1942 goto illegal_request; 1943 } 1944 break; 1945 case RESERVE: 1946 if (req->cmd.buf[1] & 1) { 1947 goto illegal_request; 1948 } 1949 break; 1950 case RESERVE_10: 1951 if (req->cmd.buf[1] & 3) { 1952 goto illegal_request; 1953 } 1954 break; 1955 case RELEASE: 1956 if (req->cmd.buf[1] & 1) { 1957 goto illegal_request; 1958 } 1959 break; 1960 case RELEASE_10: 1961 if (req->cmd.buf[1] & 3) { 1962 goto illegal_request; 1963 } 1964 break; 1965 case START_STOP: 1966 if (scsi_disk_emulate_start_stop(r) < 0) { 1967 return 0; 1968 } 1969 break; 1970 case ALLOW_MEDIUM_REMOVAL: 1971 s->tray_locked = req->cmd.buf[4] & 1; 1972 blk_lock_medium(s->qdev.conf.blk, req->cmd.buf[4] & 1); 1973 break; 1974 case READ_CAPACITY_10: 1975 /* The normal LEN field for this command is zero. */ 1976 memset(outbuf, 0, 8); 1977 blk_get_geometry(s->qdev.conf.blk, &nb_sectors); 1978 if (!nb_sectors) { 1979 scsi_check_condition(r, SENSE_CODE(LUN_NOT_READY)); 1980 return 0; 1981 } 1982 if ((req->cmd.buf[8] & 1) == 0 && req->cmd.lba) { 1983 goto illegal_request; 1984 } 1985 nb_sectors /= s->qdev.blocksize / BDRV_SECTOR_SIZE; 1986 /* Returned value is the address of the last sector. */ 1987 nb_sectors--; 1988 /* Remember the new size for read/write sanity checking. */ 1989 s->qdev.max_lba = nb_sectors; 1990 /* Clip to 2TB, instead of returning capacity modulo 2TB. */ 1991 if (nb_sectors > UINT32_MAX) { 1992 nb_sectors = UINT32_MAX; 1993 } 1994 outbuf[0] = (nb_sectors >> 24) & 0xff; 1995 outbuf[1] = (nb_sectors >> 16) & 0xff; 1996 outbuf[2] = (nb_sectors >> 8) & 0xff; 1997 outbuf[3] = nb_sectors & 0xff; 1998 outbuf[4] = 0; 1999 outbuf[5] = 0; 2000 outbuf[6] = s->qdev.blocksize >> 8; 2001 outbuf[7] = 0; 2002 break; 2003 case REQUEST_SENSE: 2004 /* Just return "NO SENSE". */ 2005 buflen = scsi_convert_sense(NULL, 0, outbuf, r->buflen, 2006 (req->cmd.buf[1] & 1) == 0); 2007 if (buflen < 0) { 2008 goto illegal_request; 2009 } 2010 break; 2011 case MECHANISM_STATUS: 2012 buflen = scsi_emulate_mechanism_status(s, outbuf); 2013 if (buflen < 0) { 2014 goto illegal_request; 2015 } 2016 break; 2017 case GET_CONFIGURATION: 2018 buflen = scsi_get_configuration(s, outbuf); 2019 if (buflen < 0) { 2020 goto illegal_request; 2021 } 2022 break; 2023 case GET_EVENT_STATUS_NOTIFICATION: 2024 buflen = scsi_get_event_status_notification(s, r, outbuf); 2025 if (buflen < 0) { 2026 goto illegal_request; 2027 } 2028 break; 2029 case READ_DISC_INFORMATION: 2030 buflen = scsi_read_disc_information(s, r, outbuf); 2031 if (buflen < 0) { 2032 goto illegal_request; 2033 } 2034 break; 2035 case READ_DVD_STRUCTURE: 2036 buflen = scsi_read_dvd_structure(s, r, outbuf); 2037 if (buflen < 0) { 2038 goto illegal_request; 2039 } 2040 break; 2041 case SERVICE_ACTION_IN_16: 2042 /* Service Action In subcommands. */ 2043 if ((req->cmd.buf[1] & 31) == SAI_READ_CAPACITY_16) { 2044 trace_scsi_disk_emulate_command_SAI_16(); 2045 memset(outbuf, 0, req->cmd.xfer); 2046 blk_get_geometry(s->qdev.conf.blk, &nb_sectors); 2047 if (!nb_sectors) { 2048 scsi_check_condition(r, SENSE_CODE(LUN_NOT_READY)); 2049 return 0; 2050 } 2051 if ((req->cmd.buf[14] & 1) == 0 && req->cmd.lba) { 2052 goto illegal_request; 2053 } 2054 nb_sectors /= s->qdev.blocksize / BDRV_SECTOR_SIZE; 2055 /* Returned value is the address of the last sector. */ 2056 nb_sectors--; 2057 /* Remember the new size for read/write sanity checking. */ 2058 s->qdev.max_lba = nb_sectors; 2059 outbuf[0] = (nb_sectors >> 56) & 0xff; 2060 outbuf[1] = (nb_sectors >> 48) & 0xff; 2061 outbuf[2] = (nb_sectors >> 40) & 0xff; 2062 outbuf[3] = (nb_sectors >> 32) & 0xff; 2063 outbuf[4] = (nb_sectors >> 24) & 0xff; 2064 outbuf[5] = (nb_sectors >> 16) & 0xff; 2065 outbuf[6] = (nb_sectors >> 8) & 0xff; 2066 outbuf[7] = nb_sectors & 0xff; 2067 outbuf[8] = 0; 2068 outbuf[9] = 0; 2069 outbuf[10] = s->qdev.blocksize >> 8; 2070 outbuf[11] = 0; 2071 outbuf[12] = 0; 2072 outbuf[13] = get_physical_block_exp(&s->qdev.conf); 2073 2074 /* set TPE bit if the format supports discard */ 2075 if (s->qdev.conf.discard_granularity) { 2076 outbuf[14] = 0x80; 2077 } 2078 2079 /* Protection, exponent and lowest lba field left blank. */ 2080 break; 2081 } 2082 trace_scsi_disk_emulate_command_SAI_unsupported(); 2083 goto illegal_request; 2084 case SYNCHRONIZE_CACHE: 2085 /* The request is used as the AIO opaque value, so add a ref. */ 2086 scsi_req_ref(&r->req); 2087 block_acct_start(blk_get_stats(s->qdev.conf.blk), &r->acct, 0, 2088 BLOCK_ACCT_FLUSH); 2089 r->req.aiocb = blk_aio_flush(s->qdev.conf.blk, scsi_aio_complete, r); 2090 return 0; 2091 case SEEK_10: 2092 trace_scsi_disk_emulate_command_SEEK_10(r->req.cmd.lba); 2093 if (r->req.cmd.lba > s->qdev.max_lba) { 2094 goto illegal_lba; 2095 } 2096 break; 2097 case MODE_SELECT: 2098 trace_scsi_disk_emulate_command_MODE_SELECT(r->req.cmd.xfer); 2099 break; 2100 case MODE_SELECT_10: 2101 trace_scsi_disk_emulate_command_MODE_SELECT_10(r->req.cmd.xfer); 2102 break; 2103 case UNMAP: 2104 trace_scsi_disk_emulate_command_UNMAP(r->req.cmd.xfer); 2105 break; 2106 case VERIFY_10: 2107 case VERIFY_12: 2108 case VERIFY_16: 2109 trace_scsi_disk_emulate_command_VERIFY((req->cmd.buf[1] >> 1) & 3); 2110 if (req->cmd.buf[1] & 6) { 2111 goto illegal_request; 2112 } 2113 break; 2114 case WRITE_SAME_10: 2115 case WRITE_SAME_16: 2116 trace_scsi_disk_emulate_command_WRITE_SAME( 2117 req->cmd.buf[0] == WRITE_SAME_10 ? 10 : 16, r->req.cmd.xfer); 2118 break; 2119 default: 2120 trace_scsi_disk_emulate_command_UNKNOWN(buf[0], 2121 scsi_command_name(buf[0])); 2122 scsi_check_condition(r, SENSE_CODE(INVALID_OPCODE)); 2123 return 0; 2124 } 2125 assert(!r->req.aiocb); 2126 r->iov.iov_len = MIN(r->buflen, req->cmd.xfer); 2127 if (r->iov.iov_len == 0) { 2128 scsi_req_complete(&r->req, GOOD); 2129 } 2130 if (r->req.cmd.mode == SCSI_XFER_TO_DEV) { 2131 assert(r->iov.iov_len == req->cmd.xfer); 2132 return -r->iov.iov_len; 2133 } else { 2134 return r->iov.iov_len; 2135 } 2136 2137 illegal_request: 2138 if (r->req.status == -1) { 2139 scsi_check_condition(r, SENSE_CODE(INVALID_FIELD)); 2140 } 2141 return 0; 2142 2143 illegal_lba: 2144 scsi_check_condition(r, SENSE_CODE(LBA_OUT_OF_RANGE)); 2145 return 0; 2146 } 2147 2148 /* Execute a scsi command. Returns the length of the data expected by the 2149 command. This will be Positive for data transfers from the device 2150 (eg. disk reads), negative for transfers to the device (eg. disk writes), 2151 and zero if the command does not transfer any data. */ 2152 2153 static int32_t scsi_disk_dma_command(SCSIRequest *req, uint8_t *buf) 2154 { 2155 SCSIDiskReq *r = DO_UPCAST(SCSIDiskReq, req, req); 2156 SCSIDiskState *s = DO_UPCAST(SCSIDiskState, qdev, req->dev); 2157 SCSIDiskClass *sdc = (SCSIDiskClass *) object_get_class(OBJECT(s)); 2158 uint32_t len; 2159 uint8_t command; 2160 2161 command = buf[0]; 2162 2163 if (!blk_is_available(s->qdev.conf.blk)) { 2164 scsi_check_condition(r, SENSE_CODE(NO_MEDIUM)); 2165 return 0; 2166 } 2167 2168 len = scsi_data_cdb_xfer(r->req.cmd.buf); 2169 switch (command) { 2170 case READ_6: 2171 case READ_10: 2172 case READ_12: 2173 case READ_16: 2174 trace_scsi_disk_dma_command_READ(r->req.cmd.lba, len); 2175 /* Protection information is not supported. For SCSI versions 2 and 2176 * older (as determined by snooping the guest's INQUIRY commands), 2177 * there is no RD/WR/VRPROTECT, so skip this check in these versions. 2178 */ 2179 if (s->qdev.scsi_version > 2 && (r->req.cmd.buf[1] & 0xe0)) { 2180 goto illegal_request; 2181 } 2182 if (!check_lba_range(s, r->req.cmd.lba, len)) { 2183 goto illegal_lba; 2184 } 2185 r->sector = r->req.cmd.lba * (s->qdev.blocksize / BDRV_SECTOR_SIZE); 2186 r->sector_count = len * (s->qdev.blocksize / BDRV_SECTOR_SIZE); 2187 break; 2188 case WRITE_6: 2189 case WRITE_10: 2190 case WRITE_12: 2191 case WRITE_16: 2192 case WRITE_VERIFY_10: 2193 case WRITE_VERIFY_12: 2194 case WRITE_VERIFY_16: 2195 if (blk_is_read_only(s->qdev.conf.blk)) { 2196 scsi_check_condition(r, SENSE_CODE(WRITE_PROTECTED)); 2197 return 0; 2198 } 2199 trace_scsi_disk_dma_command_WRITE( 2200 (command & 0xe) == 0xe ? "And Verify " : "", 2201 r->req.cmd.lba, len); 2202 /* fall through */ 2203 case VERIFY_10: 2204 case VERIFY_12: 2205 case VERIFY_16: 2206 /* We get here only for BYTCHK == 0x01 and only for scsi-block. 2207 * As far as DMA is concerned, we can treat it the same as a write; 2208 * scsi_block_do_sgio will send VERIFY commands. 2209 */ 2210 if (s->qdev.scsi_version > 2 && (r->req.cmd.buf[1] & 0xe0)) { 2211 goto illegal_request; 2212 } 2213 if (!check_lba_range(s, r->req.cmd.lba, len)) { 2214 goto illegal_lba; 2215 } 2216 r->sector = r->req.cmd.lba * (s->qdev.blocksize / BDRV_SECTOR_SIZE); 2217 r->sector_count = len * (s->qdev.blocksize / BDRV_SECTOR_SIZE); 2218 break; 2219 default: 2220 abort(); 2221 illegal_request: 2222 scsi_check_condition(r, SENSE_CODE(INVALID_FIELD)); 2223 return 0; 2224 illegal_lba: 2225 scsi_check_condition(r, SENSE_CODE(LBA_OUT_OF_RANGE)); 2226 return 0; 2227 } 2228 r->need_fua_emulation = sdc->need_fua_emulation(&r->req.cmd); 2229 if (r->sector_count == 0) { 2230 scsi_req_complete(&r->req, GOOD); 2231 } 2232 assert(r->iov.iov_len == 0); 2233 if (r->req.cmd.mode == SCSI_XFER_TO_DEV) { 2234 return -r->sector_count * BDRV_SECTOR_SIZE; 2235 } else { 2236 return r->sector_count * BDRV_SECTOR_SIZE; 2237 } 2238 } 2239 2240 static void scsi_disk_reset(DeviceState *dev) 2241 { 2242 SCSIDiskState *s = DO_UPCAST(SCSIDiskState, qdev.qdev, dev); 2243 uint64_t nb_sectors; 2244 2245 scsi_device_purge_requests(&s->qdev, SENSE_CODE(RESET)); 2246 2247 blk_get_geometry(s->qdev.conf.blk, &nb_sectors); 2248 nb_sectors /= s->qdev.blocksize / BDRV_SECTOR_SIZE; 2249 if (nb_sectors) { 2250 nb_sectors--; 2251 } 2252 s->qdev.max_lba = nb_sectors; 2253 /* reset tray statuses */ 2254 s->tray_locked = 0; 2255 s->tray_open = 0; 2256 2257 s->qdev.scsi_version = s->qdev.default_scsi_version; 2258 } 2259 2260 static void scsi_disk_resize_cb(void *opaque) 2261 { 2262 SCSIDiskState *s = opaque; 2263 2264 /* SPC lists this sense code as available only for 2265 * direct-access devices. 2266 */ 2267 if (s->qdev.type == TYPE_DISK) { 2268 scsi_device_report_change(&s->qdev, SENSE_CODE(CAPACITY_CHANGED)); 2269 } 2270 } 2271 2272 static void scsi_cd_change_media_cb(void *opaque, bool load, Error **errp) 2273 { 2274 SCSIDiskState *s = opaque; 2275 2276 /* 2277 * When a CD gets changed, we have to report an ejected state and 2278 * then a loaded state to guests so that they detect tray 2279 * open/close and media change events. Guests that do not use 2280 * GET_EVENT_STATUS_NOTIFICATION to detect such tray open/close 2281 * states rely on this behavior. 2282 * 2283 * media_changed governs the state machine used for unit attention 2284 * report. media_event is used by GET EVENT STATUS NOTIFICATION. 2285 */ 2286 s->media_changed = load; 2287 s->tray_open = !load; 2288 scsi_device_set_ua(&s->qdev, SENSE_CODE(UNIT_ATTENTION_NO_MEDIUM)); 2289 s->media_event = true; 2290 s->eject_request = false; 2291 } 2292 2293 static void scsi_cd_eject_request_cb(void *opaque, bool force) 2294 { 2295 SCSIDiskState *s = opaque; 2296 2297 s->eject_request = true; 2298 if (force) { 2299 s->tray_locked = false; 2300 } 2301 } 2302 2303 static bool scsi_cd_is_tray_open(void *opaque) 2304 { 2305 return ((SCSIDiskState *)opaque)->tray_open; 2306 } 2307 2308 static bool scsi_cd_is_medium_locked(void *opaque) 2309 { 2310 return ((SCSIDiskState *)opaque)->tray_locked; 2311 } 2312 2313 static const BlockDevOps scsi_disk_removable_block_ops = { 2314 .change_media_cb = scsi_cd_change_media_cb, 2315 .eject_request_cb = scsi_cd_eject_request_cb, 2316 .is_tray_open = scsi_cd_is_tray_open, 2317 .is_medium_locked = scsi_cd_is_medium_locked, 2318 2319 .resize_cb = scsi_disk_resize_cb, 2320 }; 2321 2322 static const BlockDevOps scsi_disk_block_ops = { 2323 .resize_cb = scsi_disk_resize_cb, 2324 }; 2325 2326 static void scsi_disk_unit_attention_reported(SCSIDevice *dev) 2327 { 2328 SCSIDiskState *s = DO_UPCAST(SCSIDiskState, qdev, dev); 2329 if (s->media_changed) { 2330 s->media_changed = false; 2331 scsi_device_set_ua(&s->qdev, SENSE_CODE(MEDIUM_CHANGED)); 2332 } 2333 } 2334 2335 static void scsi_realize(SCSIDevice *dev, Error **errp) 2336 { 2337 SCSIDiskState *s = DO_UPCAST(SCSIDiskState, qdev, dev); 2338 bool read_only; 2339 2340 if (!s->qdev.conf.blk) { 2341 error_setg(errp, "drive property not set"); 2342 return; 2343 } 2344 2345 if (!(s->features & (1 << SCSI_DISK_F_REMOVABLE)) && 2346 !blk_is_inserted(s->qdev.conf.blk)) { 2347 error_setg(errp, "Device needs media, but drive is empty"); 2348 return; 2349 } 2350 2351 if (!blkconf_blocksizes(&s->qdev.conf, errp)) { 2352 return; 2353 } 2354 2355 if (blk_get_aio_context(s->qdev.conf.blk) != qemu_get_aio_context() && 2356 !s->qdev.hba_supports_iothread) 2357 { 2358 error_setg(errp, "HBA does not support iothreads"); 2359 return; 2360 } 2361 2362 if (dev->type == TYPE_DISK) { 2363 if (!blkconf_geometry(&dev->conf, NULL, 65535, 255, 255, errp)) { 2364 return; 2365 } 2366 } 2367 2368 read_only = blk_is_read_only(s->qdev.conf.blk); 2369 if (dev->type == TYPE_ROM) { 2370 read_only = true; 2371 } 2372 2373 if (!blkconf_apply_backend_options(&dev->conf, read_only, 2374 dev->type == TYPE_DISK, errp)) { 2375 return; 2376 } 2377 2378 if (s->qdev.conf.discard_granularity == -1) { 2379 s->qdev.conf.discard_granularity = 2380 MAX(s->qdev.conf.logical_block_size, DEFAULT_DISCARD_GRANULARITY); 2381 } 2382 2383 if (!s->version) { 2384 s->version = g_strdup(qemu_hw_version()); 2385 } 2386 if (!s->vendor) { 2387 s->vendor = g_strdup("QEMU"); 2388 } 2389 if (!s->device_id) { 2390 if (s->serial) { 2391 s->device_id = g_strdup_printf("%.20s", s->serial); 2392 } else { 2393 const char *str = blk_name(s->qdev.conf.blk); 2394 if (str && *str) { 2395 s->device_id = g_strdup(str); 2396 } 2397 } 2398 } 2399 2400 if (blk_is_sg(s->qdev.conf.blk)) { 2401 error_setg(errp, "unwanted /dev/sg*"); 2402 return; 2403 } 2404 2405 if ((s->features & (1 << SCSI_DISK_F_REMOVABLE)) && 2406 !(s->features & (1 << SCSI_DISK_F_NO_REMOVABLE_DEVOPS))) { 2407 blk_set_dev_ops(s->qdev.conf.blk, &scsi_disk_removable_block_ops, s); 2408 } else { 2409 blk_set_dev_ops(s->qdev.conf.blk, &scsi_disk_block_ops, s); 2410 } 2411 blk_set_guest_block_size(s->qdev.conf.blk, s->qdev.blocksize); 2412 2413 blk_iostatus_enable(s->qdev.conf.blk); 2414 2415 add_boot_device_lchs(&dev->qdev, NULL, 2416 dev->conf.lcyls, 2417 dev->conf.lheads, 2418 dev->conf.lsecs); 2419 } 2420 2421 static void scsi_unrealize(SCSIDevice *dev) 2422 { 2423 del_boot_device_lchs(&dev->qdev, NULL); 2424 } 2425 2426 static void scsi_hd_realize(SCSIDevice *dev, Error **errp) 2427 { 2428 SCSIDiskState *s = DO_UPCAST(SCSIDiskState, qdev, dev); 2429 AioContext *ctx = NULL; 2430 /* can happen for devices without drive. The error message for missing 2431 * backend will be issued in scsi_realize 2432 */ 2433 if (s->qdev.conf.blk) { 2434 ctx = blk_get_aio_context(s->qdev.conf.blk); 2435 aio_context_acquire(ctx); 2436 if (!blkconf_blocksizes(&s->qdev.conf, errp)) { 2437 goto out; 2438 } 2439 } 2440 s->qdev.blocksize = s->qdev.conf.logical_block_size; 2441 s->qdev.type = TYPE_DISK; 2442 if (!s->product) { 2443 s->product = g_strdup("QEMU HARDDISK"); 2444 } 2445 scsi_realize(&s->qdev, errp); 2446 out: 2447 if (ctx) { 2448 aio_context_release(ctx); 2449 } 2450 } 2451 2452 static void scsi_cd_realize(SCSIDevice *dev, Error **errp) 2453 { 2454 SCSIDiskState *s = DO_UPCAST(SCSIDiskState, qdev, dev); 2455 AioContext *ctx; 2456 int ret; 2457 2458 if (!dev->conf.blk) { 2459 /* Anonymous BlockBackend for an empty drive. As we put it into 2460 * dev->conf, qdev takes care of detaching on unplug. */ 2461 dev->conf.blk = blk_new(qemu_get_aio_context(), 0, BLK_PERM_ALL); 2462 ret = blk_attach_dev(dev->conf.blk, &dev->qdev); 2463 assert(ret == 0); 2464 } 2465 2466 ctx = blk_get_aio_context(dev->conf.blk); 2467 aio_context_acquire(ctx); 2468 s->qdev.blocksize = 2048; 2469 s->qdev.type = TYPE_ROM; 2470 s->features |= 1 << SCSI_DISK_F_REMOVABLE; 2471 if (!s->product) { 2472 s->product = g_strdup("QEMU CD-ROM"); 2473 } 2474 scsi_realize(&s->qdev, errp); 2475 aio_context_release(ctx); 2476 } 2477 2478 static void scsi_disk_realize(SCSIDevice *dev, Error **errp) 2479 { 2480 DriveInfo *dinfo; 2481 Error *local_err = NULL; 2482 2483 warn_report("'scsi-disk' is deprecated, " 2484 "please use 'scsi-hd' or 'scsi-cd' instead"); 2485 2486 if (!dev->conf.blk) { 2487 scsi_realize(dev, &local_err); 2488 assert(local_err); 2489 error_propagate(errp, local_err); 2490 return; 2491 } 2492 2493 dinfo = blk_legacy_dinfo(dev->conf.blk); 2494 if (dinfo && dinfo->media_cd) { 2495 scsi_cd_realize(dev, errp); 2496 } else { 2497 scsi_hd_realize(dev, errp); 2498 } 2499 } 2500 2501 static const SCSIReqOps scsi_disk_emulate_reqops = { 2502 .size = sizeof(SCSIDiskReq), 2503 .free_req = scsi_free_request, 2504 .send_command = scsi_disk_emulate_command, 2505 .read_data = scsi_disk_emulate_read_data, 2506 .write_data = scsi_disk_emulate_write_data, 2507 .get_buf = scsi_get_buf, 2508 }; 2509 2510 static const SCSIReqOps scsi_disk_dma_reqops = { 2511 .size = sizeof(SCSIDiskReq), 2512 .free_req = scsi_free_request, 2513 .send_command = scsi_disk_dma_command, 2514 .read_data = scsi_read_data, 2515 .write_data = scsi_write_data, 2516 .get_buf = scsi_get_buf, 2517 .load_request = scsi_disk_load_request, 2518 .save_request = scsi_disk_save_request, 2519 }; 2520 2521 static const SCSIReqOps *const scsi_disk_reqops_dispatch[256] = { 2522 [TEST_UNIT_READY] = &scsi_disk_emulate_reqops, 2523 [INQUIRY] = &scsi_disk_emulate_reqops, 2524 [MODE_SENSE] = &scsi_disk_emulate_reqops, 2525 [MODE_SENSE_10] = &scsi_disk_emulate_reqops, 2526 [START_STOP] = &scsi_disk_emulate_reqops, 2527 [ALLOW_MEDIUM_REMOVAL] = &scsi_disk_emulate_reqops, 2528 [READ_CAPACITY_10] = &scsi_disk_emulate_reqops, 2529 [READ_TOC] = &scsi_disk_emulate_reqops, 2530 [READ_DVD_STRUCTURE] = &scsi_disk_emulate_reqops, 2531 [READ_DISC_INFORMATION] = &scsi_disk_emulate_reqops, 2532 [GET_CONFIGURATION] = &scsi_disk_emulate_reqops, 2533 [GET_EVENT_STATUS_NOTIFICATION] = &scsi_disk_emulate_reqops, 2534 [MECHANISM_STATUS] = &scsi_disk_emulate_reqops, 2535 [SERVICE_ACTION_IN_16] = &scsi_disk_emulate_reqops, 2536 [REQUEST_SENSE] = &scsi_disk_emulate_reqops, 2537 [SYNCHRONIZE_CACHE] = &scsi_disk_emulate_reqops, 2538 [SEEK_10] = &scsi_disk_emulate_reqops, 2539 [MODE_SELECT] = &scsi_disk_emulate_reqops, 2540 [MODE_SELECT_10] = &scsi_disk_emulate_reqops, 2541 [UNMAP] = &scsi_disk_emulate_reqops, 2542 [WRITE_SAME_10] = &scsi_disk_emulate_reqops, 2543 [WRITE_SAME_16] = &scsi_disk_emulate_reqops, 2544 [VERIFY_10] = &scsi_disk_emulate_reqops, 2545 [VERIFY_12] = &scsi_disk_emulate_reqops, 2546 [VERIFY_16] = &scsi_disk_emulate_reqops, 2547 2548 [READ_6] = &scsi_disk_dma_reqops, 2549 [READ_10] = &scsi_disk_dma_reqops, 2550 [READ_12] = &scsi_disk_dma_reqops, 2551 [READ_16] = &scsi_disk_dma_reqops, 2552 [WRITE_6] = &scsi_disk_dma_reqops, 2553 [WRITE_10] = &scsi_disk_dma_reqops, 2554 [WRITE_12] = &scsi_disk_dma_reqops, 2555 [WRITE_16] = &scsi_disk_dma_reqops, 2556 [WRITE_VERIFY_10] = &scsi_disk_dma_reqops, 2557 [WRITE_VERIFY_12] = &scsi_disk_dma_reqops, 2558 [WRITE_VERIFY_16] = &scsi_disk_dma_reqops, 2559 }; 2560 2561 static void scsi_disk_new_request_dump(uint32_t lun, uint32_t tag, uint8_t *buf) 2562 { 2563 int i; 2564 int len = scsi_cdb_length(buf); 2565 char *line_buffer, *p; 2566 2567 line_buffer = g_malloc(len * 5 + 1); 2568 2569 for (i = 0, p = line_buffer; i < len; i++) { 2570 p += sprintf(p, " 0x%02x", buf[i]); 2571 } 2572 trace_scsi_disk_new_request(lun, tag, line_buffer); 2573 2574 g_free(line_buffer); 2575 } 2576 2577 static SCSIRequest *scsi_new_request(SCSIDevice *d, uint32_t tag, uint32_t lun, 2578 uint8_t *buf, void *hba_private) 2579 { 2580 SCSIDiskState *s = DO_UPCAST(SCSIDiskState, qdev, d); 2581 SCSIRequest *req; 2582 const SCSIReqOps *ops; 2583 uint8_t command; 2584 2585 command = buf[0]; 2586 ops = scsi_disk_reqops_dispatch[command]; 2587 if (!ops) { 2588 ops = &scsi_disk_emulate_reqops; 2589 } 2590 req = scsi_req_alloc(ops, &s->qdev, tag, lun, hba_private); 2591 2592 if (trace_event_get_state_backends(TRACE_SCSI_DISK_NEW_REQUEST)) { 2593 scsi_disk_new_request_dump(lun, tag, buf); 2594 } 2595 2596 return req; 2597 } 2598 2599 #ifdef __linux__ 2600 static int get_device_type(SCSIDiskState *s) 2601 { 2602 uint8_t cmd[16]; 2603 uint8_t buf[36]; 2604 int ret; 2605 2606 memset(cmd, 0, sizeof(cmd)); 2607 memset(buf, 0, sizeof(buf)); 2608 cmd[0] = INQUIRY; 2609 cmd[4] = sizeof(buf); 2610 2611 ret = scsi_SG_IO_FROM_DEV(s->qdev.conf.blk, cmd, sizeof(cmd), 2612 buf, sizeof(buf)); 2613 if (ret < 0) { 2614 return -1; 2615 } 2616 s->qdev.type = buf[0]; 2617 if (buf[1] & 0x80) { 2618 s->features |= 1 << SCSI_DISK_F_REMOVABLE; 2619 } 2620 return 0; 2621 } 2622 2623 static void scsi_block_realize(SCSIDevice *dev, Error **errp) 2624 { 2625 SCSIDiskState *s = DO_UPCAST(SCSIDiskState, qdev, dev); 2626 AioContext *ctx; 2627 int sg_version; 2628 int rc; 2629 2630 if (!s->qdev.conf.blk) { 2631 error_setg(errp, "drive property not set"); 2632 return; 2633 } 2634 2635 if (s->rotation_rate) { 2636 error_report_once("rotation_rate is specified for scsi-block but is " 2637 "not implemented. This option is deprecated and will " 2638 "be removed in a future version"); 2639 } 2640 2641 ctx = blk_get_aio_context(s->qdev.conf.blk); 2642 aio_context_acquire(ctx); 2643 2644 /* check we are using a driver managing SG_IO (version 3 and after) */ 2645 rc = blk_ioctl(s->qdev.conf.blk, SG_GET_VERSION_NUM, &sg_version); 2646 if (rc < 0) { 2647 error_setg_errno(errp, -rc, "cannot get SG_IO version number"); 2648 if (rc != -EPERM) { 2649 error_append_hint(errp, "Is this a SCSI device?\n"); 2650 } 2651 goto out; 2652 } 2653 if (sg_version < 30000) { 2654 error_setg(errp, "scsi generic interface too old"); 2655 goto out; 2656 } 2657 2658 /* get device type from INQUIRY data */ 2659 rc = get_device_type(s); 2660 if (rc < 0) { 2661 error_setg(errp, "INQUIRY failed"); 2662 goto out; 2663 } 2664 2665 /* Make a guess for the block size, we'll fix it when the guest sends. 2666 * READ CAPACITY. If they don't, they likely would assume these sizes 2667 * anyway. (TODO: check in /sys). 2668 */ 2669 if (s->qdev.type == TYPE_ROM || s->qdev.type == TYPE_WORM) { 2670 s->qdev.blocksize = 2048; 2671 } else { 2672 s->qdev.blocksize = 512; 2673 } 2674 2675 /* Makes the scsi-block device not removable by using HMP and QMP eject 2676 * command. 2677 */ 2678 s->features |= (1 << SCSI_DISK_F_NO_REMOVABLE_DEVOPS); 2679 2680 scsi_realize(&s->qdev, errp); 2681 scsi_generic_read_device_inquiry(&s->qdev); 2682 2683 out: 2684 aio_context_release(ctx); 2685 } 2686 2687 typedef struct SCSIBlockReq { 2688 SCSIDiskReq req; 2689 sg_io_hdr_t io_header; 2690 2691 /* Selected bytes of the original CDB, copied into our own CDB. */ 2692 uint8_t cmd, cdb1, group_number; 2693 2694 /* CDB passed to SG_IO. */ 2695 uint8_t cdb[16]; 2696 } SCSIBlockReq; 2697 2698 static BlockAIOCB *scsi_block_do_sgio(SCSIBlockReq *req, 2699 int64_t offset, QEMUIOVector *iov, 2700 int direction, 2701 BlockCompletionFunc *cb, void *opaque) 2702 { 2703 sg_io_hdr_t *io_header = &req->io_header; 2704 SCSIDiskReq *r = &req->req; 2705 SCSIDiskState *s = DO_UPCAST(SCSIDiskState, qdev, r->req.dev); 2706 int nb_logical_blocks; 2707 uint64_t lba; 2708 BlockAIOCB *aiocb; 2709 2710 /* This is not supported yet. It can only happen if the guest does 2711 * reads and writes that are not aligned to one logical sectors 2712 * _and_ cover multiple MemoryRegions. 2713 */ 2714 assert(offset % s->qdev.blocksize == 0); 2715 assert(iov->size % s->qdev.blocksize == 0); 2716 2717 io_header->interface_id = 'S'; 2718 2719 /* The data transfer comes from the QEMUIOVector. */ 2720 io_header->dxfer_direction = direction; 2721 io_header->dxfer_len = iov->size; 2722 io_header->dxferp = (void *)iov->iov; 2723 io_header->iovec_count = iov->niov; 2724 assert(io_header->iovec_count == iov->niov); /* no overflow! */ 2725 2726 /* Build a new CDB with the LBA and length patched in, in case 2727 * DMA helpers split the transfer in multiple segments. Do not 2728 * build a CDB smaller than what the guest wanted, and only build 2729 * a larger one if strictly necessary. 2730 */ 2731 io_header->cmdp = req->cdb; 2732 lba = offset / s->qdev.blocksize; 2733 nb_logical_blocks = io_header->dxfer_len / s->qdev.blocksize; 2734 2735 if ((req->cmd >> 5) == 0 && lba <= 0x1ffff) { 2736 /* 6-byte CDB */ 2737 stl_be_p(&req->cdb[0], lba | (req->cmd << 24)); 2738 req->cdb[4] = nb_logical_blocks; 2739 req->cdb[5] = 0; 2740 io_header->cmd_len = 6; 2741 } else if ((req->cmd >> 5) <= 1 && lba <= 0xffffffffULL) { 2742 /* 10-byte CDB */ 2743 req->cdb[0] = (req->cmd & 0x1f) | 0x20; 2744 req->cdb[1] = req->cdb1; 2745 stl_be_p(&req->cdb[2], lba); 2746 req->cdb[6] = req->group_number; 2747 stw_be_p(&req->cdb[7], nb_logical_blocks); 2748 req->cdb[9] = 0; 2749 io_header->cmd_len = 10; 2750 } else if ((req->cmd >> 5) != 4 && lba <= 0xffffffffULL) { 2751 /* 12-byte CDB */ 2752 req->cdb[0] = (req->cmd & 0x1f) | 0xA0; 2753 req->cdb[1] = req->cdb1; 2754 stl_be_p(&req->cdb[2], lba); 2755 stl_be_p(&req->cdb[6], nb_logical_blocks); 2756 req->cdb[10] = req->group_number; 2757 req->cdb[11] = 0; 2758 io_header->cmd_len = 12; 2759 } else { 2760 /* 16-byte CDB */ 2761 req->cdb[0] = (req->cmd & 0x1f) | 0x80; 2762 req->cdb[1] = req->cdb1; 2763 stq_be_p(&req->cdb[2], lba); 2764 stl_be_p(&req->cdb[10], nb_logical_blocks); 2765 req->cdb[14] = req->group_number; 2766 req->cdb[15] = 0; 2767 io_header->cmd_len = 16; 2768 } 2769 2770 /* The rest is as in scsi-generic.c. */ 2771 io_header->mx_sb_len = sizeof(r->req.sense); 2772 io_header->sbp = r->req.sense; 2773 io_header->timeout = UINT_MAX; 2774 io_header->usr_ptr = r; 2775 io_header->flags |= SG_FLAG_DIRECT_IO; 2776 2777 aiocb = blk_aio_ioctl(s->qdev.conf.blk, SG_IO, io_header, cb, opaque); 2778 assert(aiocb != NULL); 2779 return aiocb; 2780 } 2781 2782 static bool scsi_block_no_fua(SCSICommand *cmd) 2783 { 2784 return false; 2785 } 2786 2787 static BlockAIOCB *scsi_block_dma_readv(int64_t offset, 2788 QEMUIOVector *iov, 2789 BlockCompletionFunc *cb, void *cb_opaque, 2790 void *opaque) 2791 { 2792 SCSIBlockReq *r = opaque; 2793 return scsi_block_do_sgio(r, offset, iov, 2794 SG_DXFER_FROM_DEV, cb, cb_opaque); 2795 } 2796 2797 static BlockAIOCB *scsi_block_dma_writev(int64_t offset, 2798 QEMUIOVector *iov, 2799 BlockCompletionFunc *cb, void *cb_opaque, 2800 void *opaque) 2801 { 2802 SCSIBlockReq *r = opaque; 2803 return scsi_block_do_sgio(r, offset, iov, 2804 SG_DXFER_TO_DEV, cb, cb_opaque); 2805 } 2806 2807 static bool scsi_block_is_passthrough(SCSIDiskState *s, uint8_t *buf) 2808 { 2809 switch (buf[0]) { 2810 case VERIFY_10: 2811 case VERIFY_12: 2812 case VERIFY_16: 2813 /* Check if BYTCHK == 0x01 (data-out buffer contains data 2814 * for the number of logical blocks specified in the length 2815 * field). For other modes, do not use scatter/gather operation. 2816 */ 2817 if ((buf[1] & 6) == 2) { 2818 return false; 2819 } 2820 break; 2821 2822 case READ_6: 2823 case READ_10: 2824 case READ_12: 2825 case READ_16: 2826 case WRITE_6: 2827 case WRITE_10: 2828 case WRITE_12: 2829 case WRITE_16: 2830 case WRITE_VERIFY_10: 2831 case WRITE_VERIFY_12: 2832 case WRITE_VERIFY_16: 2833 /* MMC writing cannot be done via DMA helpers, because it sometimes 2834 * involves writing beyond the maximum LBA or to negative LBA (lead-in). 2835 * We might use scsi_block_dma_reqops as long as no writing commands are 2836 * seen, but performance usually isn't paramount on optical media. So, 2837 * just make scsi-block operate the same as scsi-generic for them. 2838 */ 2839 if (s->qdev.type != TYPE_ROM) { 2840 return false; 2841 } 2842 break; 2843 2844 default: 2845 break; 2846 } 2847 2848 return true; 2849 } 2850 2851 2852 static int32_t scsi_block_dma_command(SCSIRequest *req, uint8_t *buf) 2853 { 2854 SCSIBlockReq *r = (SCSIBlockReq *)req; 2855 SCSIDiskState *s = DO_UPCAST(SCSIDiskState, qdev, req->dev); 2856 2857 r->cmd = req->cmd.buf[0]; 2858 switch (r->cmd >> 5) { 2859 case 0: 2860 /* 6-byte CDB. */ 2861 r->cdb1 = r->group_number = 0; 2862 break; 2863 case 1: 2864 /* 10-byte CDB. */ 2865 r->cdb1 = req->cmd.buf[1]; 2866 r->group_number = req->cmd.buf[6]; 2867 break; 2868 case 4: 2869 /* 12-byte CDB. */ 2870 r->cdb1 = req->cmd.buf[1]; 2871 r->group_number = req->cmd.buf[10]; 2872 break; 2873 case 5: 2874 /* 16-byte CDB. */ 2875 r->cdb1 = req->cmd.buf[1]; 2876 r->group_number = req->cmd.buf[14]; 2877 break; 2878 default: 2879 abort(); 2880 } 2881 2882 /* Protection information is not supported. For SCSI versions 2 and 2883 * older (as determined by snooping the guest's INQUIRY commands), 2884 * there is no RD/WR/VRPROTECT, so skip this check in these versions. 2885 */ 2886 if (s->qdev.scsi_version > 2 && (req->cmd.buf[1] & 0xe0)) { 2887 scsi_check_condition(&r->req, SENSE_CODE(INVALID_FIELD)); 2888 return 0; 2889 } 2890 2891 r->req.status = &r->io_header.status; 2892 return scsi_disk_dma_command(req, buf); 2893 } 2894 2895 static const SCSIReqOps scsi_block_dma_reqops = { 2896 .size = sizeof(SCSIBlockReq), 2897 .free_req = scsi_free_request, 2898 .send_command = scsi_block_dma_command, 2899 .read_data = scsi_read_data, 2900 .write_data = scsi_write_data, 2901 .get_buf = scsi_get_buf, 2902 .load_request = scsi_disk_load_request, 2903 .save_request = scsi_disk_save_request, 2904 }; 2905 2906 static SCSIRequest *scsi_block_new_request(SCSIDevice *d, uint32_t tag, 2907 uint32_t lun, uint8_t *buf, 2908 void *hba_private) 2909 { 2910 SCSIDiskState *s = DO_UPCAST(SCSIDiskState, qdev, d); 2911 2912 if (scsi_block_is_passthrough(s, buf)) { 2913 return scsi_req_alloc(&scsi_generic_req_ops, &s->qdev, tag, lun, 2914 hba_private); 2915 } else { 2916 return scsi_req_alloc(&scsi_block_dma_reqops, &s->qdev, tag, lun, 2917 hba_private); 2918 } 2919 } 2920 2921 static int scsi_block_parse_cdb(SCSIDevice *d, SCSICommand *cmd, 2922 uint8_t *buf, void *hba_private) 2923 { 2924 SCSIDiskState *s = DO_UPCAST(SCSIDiskState, qdev, d); 2925 2926 if (scsi_block_is_passthrough(s, buf)) { 2927 return scsi_bus_parse_cdb(&s->qdev, cmd, buf, hba_private); 2928 } else { 2929 return scsi_req_parse_cdb(&s->qdev, cmd, buf); 2930 } 2931 } 2932 2933 static void scsi_block_update_sense(SCSIRequest *req) 2934 { 2935 SCSIDiskReq *r = DO_UPCAST(SCSIDiskReq, req, req); 2936 SCSIBlockReq *br = DO_UPCAST(SCSIBlockReq, req, r); 2937 r->req.sense_len = MIN(br->io_header.sb_len_wr, sizeof(r->req.sense)); 2938 } 2939 #endif 2940 2941 static 2942 BlockAIOCB *scsi_dma_readv(int64_t offset, QEMUIOVector *iov, 2943 BlockCompletionFunc *cb, void *cb_opaque, 2944 void *opaque) 2945 { 2946 SCSIDiskReq *r = opaque; 2947 SCSIDiskState *s = DO_UPCAST(SCSIDiskState, qdev, r->req.dev); 2948 return blk_aio_preadv(s->qdev.conf.blk, offset, iov, 0, cb, cb_opaque); 2949 } 2950 2951 static 2952 BlockAIOCB *scsi_dma_writev(int64_t offset, QEMUIOVector *iov, 2953 BlockCompletionFunc *cb, void *cb_opaque, 2954 void *opaque) 2955 { 2956 SCSIDiskReq *r = opaque; 2957 SCSIDiskState *s = DO_UPCAST(SCSIDiskState, qdev, r->req.dev); 2958 return blk_aio_pwritev(s->qdev.conf.blk, offset, iov, 0, cb, cb_opaque); 2959 } 2960 2961 static void scsi_disk_base_class_initfn(ObjectClass *klass, void *data) 2962 { 2963 DeviceClass *dc = DEVICE_CLASS(klass); 2964 SCSIDiskClass *sdc = SCSI_DISK_BASE_CLASS(klass); 2965 2966 dc->fw_name = "disk"; 2967 dc->reset = scsi_disk_reset; 2968 sdc->dma_readv = scsi_dma_readv; 2969 sdc->dma_writev = scsi_dma_writev; 2970 sdc->need_fua_emulation = scsi_is_cmd_fua; 2971 } 2972 2973 static const TypeInfo scsi_disk_base_info = { 2974 .name = TYPE_SCSI_DISK_BASE, 2975 .parent = TYPE_SCSI_DEVICE, 2976 .class_init = scsi_disk_base_class_initfn, 2977 .instance_size = sizeof(SCSIDiskState), 2978 .class_size = sizeof(SCSIDiskClass), 2979 .abstract = true, 2980 }; 2981 2982 #define DEFINE_SCSI_DISK_PROPERTIES() \ 2983 DEFINE_PROP_DRIVE_IOTHREAD("drive", SCSIDiskState, qdev.conf.blk), \ 2984 DEFINE_BLOCK_PROPERTIES_BASE(SCSIDiskState, qdev.conf), \ 2985 DEFINE_BLOCK_ERROR_PROPERTIES(SCSIDiskState, qdev.conf), \ 2986 DEFINE_PROP_STRING("ver", SCSIDiskState, version), \ 2987 DEFINE_PROP_STRING("serial", SCSIDiskState, serial), \ 2988 DEFINE_PROP_STRING("vendor", SCSIDiskState, vendor), \ 2989 DEFINE_PROP_STRING("product", SCSIDiskState, product), \ 2990 DEFINE_PROP_STRING("device_id", SCSIDiskState, device_id) 2991 2992 2993 static Property scsi_hd_properties[] = { 2994 DEFINE_SCSI_DISK_PROPERTIES(), 2995 DEFINE_PROP_BIT("removable", SCSIDiskState, features, 2996 SCSI_DISK_F_REMOVABLE, false), 2997 DEFINE_PROP_BIT("dpofua", SCSIDiskState, features, 2998 SCSI_DISK_F_DPOFUA, false), 2999 DEFINE_PROP_UINT64("wwn", SCSIDiskState, qdev.wwn, 0), 3000 DEFINE_PROP_UINT64("port_wwn", SCSIDiskState, qdev.port_wwn, 0), 3001 DEFINE_PROP_UINT16("port_index", SCSIDiskState, port_index, 0), 3002 DEFINE_PROP_UINT64("max_unmap_size", SCSIDiskState, max_unmap_size, 3003 DEFAULT_MAX_UNMAP_SIZE), 3004 DEFINE_PROP_UINT64("max_io_size", SCSIDiskState, max_io_size, 3005 DEFAULT_MAX_IO_SIZE), 3006 DEFINE_PROP_UINT16("rotation_rate", SCSIDiskState, rotation_rate, 0), 3007 DEFINE_PROP_INT32("scsi_version", SCSIDiskState, qdev.default_scsi_version, 3008 5), 3009 DEFINE_BLOCK_CHS_PROPERTIES(SCSIDiskState, qdev.conf), 3010 DEFINE_PROP_END_OF_LIST(), 3011 }; 3012 3013 static const VMStateDescription vmstate_scsi_disk_state = { 3014 .name = "scsi-disk", 3015 .version_id = 1, 3016 .minimum_version_id = 1, 3017 .fields = (VMStateField[]) { 3018 VMSTATE_SCSI_DEVICE(qdev, SCSIDiskState), 3019 VMSTATE_BOOL(media_changed, SCSIDiskState), 3020 VMSTATE_BOOL(media_event, SCSIDiskState), 3021 VMSTATE_BOOL(eject_request, SCSIDiskState), 3022 VMSTATE_BOOL(tray_open, SCSIDiskState), 3023 VMSTATE_BOOL(tray_locked, SCSIDiskState), 3024 VMSTATE_END_OF_LIST() 3025 } 3026 }; 3027 3028 static void scsi_hd_class_initfn(ObjectClass *klass, void *data) 3029 { 3030 DeviceClass *dc = DEVICE_CLASS(klass); 3031 SCSIDeviceClass *sc = SCSI_DEVICE_CLASS(klass); 3032 3033 sc->realize = scsi_hd_realize; 3034 sc->unrealize = scsi_unrealize; 3035 sc->alloc_req = scsi_new_request; 3036 sc->unit_attention_reported = scsi_disk_unit_attention_reported; 3037 dc->desc = "virtual SCSI disk"; 3038 device_class_set_props(dc, scsi_hd_properties); 3039 dc->vmsd = &vmstate_scsi_disk_state; 3040 } 3041 3042 static const TypeInfo scsi_hd_info = { 3043 .name = "scsi-hd", 3044 .parent = TYPE_SCSI_DISK_BASE, 3045 .class_init = scsi_hd_class_initfn, 3046 }; 3047 3048 static Property scsi_cd_properties[] = { 3049 DEFINE_SCSI_DISK_PROPERTIES(), 3050 DEFINE_PROP_UINT64("wwn", SCSIDiskState, qdev.wwn, 0), 3051 DEFINE_PROP_UINT64("port_wwn", SCSIDiskState, qdev.port_wwn, 0), 3052 DEFINE_PROP_UINT16("port_index", SCSIDiskState, port_index, 0), 3053 DEFINE_PROP_UINT64("max_io_size", SCSIDiskState, max_io_size, 3054 DEFAULT_MAX_IO_SIZE), 3055 DEFINE_PROP_INT32("scsi_version", SCSIDiskState, qdev.default_scsi_version, 3056 5), 3057 DEFINE_PROP_END_OF_LIST(), 3058 }; 3059 3060 static void scsi_cd_class_initfn(ObjectClass *klass, void *data) 3061 { 3062 DeviceClass *dc = DEVICE_CLASS(klass); 3063 SCSIDeviceClass *sc = SCSI_DEVICE_CLASS(klass); 3064 3065 sc->realize = scsi_cd_realize; 3066 sc->alloc_req = scsi_new_request; 3067 sc->unit_attention_reported = scsi_disk_unit_attention_reported; 3068 dc->desc = "virtual SCSI CD-ROM"; 3069 device_class_set_props(dc, scsi_cd_properties); 3070 dc->vmsd = &vmstate_scsi_disk_state; 3071 } 3072 3073 static const TypeInfo scsi_cd_info = { 3074 .name = "scsi-cd", 3075 .parent = TYPE_SCSI_DISK_BASE, 3076 .class_init = scsi_cd_class_initfn, 3077 }; 3078 3079 #ifdef __linux__ 3080 static Property scsi_block_properties[] = { 3081 DEFINE_BLOCK_ERROR_PROPERTIES(SCSIDiskState, qdev.conf), 3082 DEFINE_PROP_DRIVE("drive", SCSIDiskState, qdev.conf.blk), 3083 DEFINE_PROP_BOOL("share-rw", SCSIDiskState, qdev.conf.share_rw, false), 3084 DEFINE_PROP_UINT16("rotation_rate", SCSIDiskState, rotation_rate, 0), 3085 DEFINE_PROP_UINT64("max_unmap_size", SCSIDiskState, max_unmap_size, 3086 DEFAULT_MAX_UNMAP_SIZE), 3087 DEFINE_PROP_UINT64("max_io_size", SCSIDiskState, max_io_size, 3088 DEFAULT_MAX_IO_SIZE), 3089 DEFINE_PROP_INT32("scsi_version", SCSIDiskState, qdev.default_scsi_version, 3090 -1), 3091 DEFINE_PROP_END_OF_LIST(), 3092 }; 3093 3094 static void scsi_block_class_initfn(ObjectClass *klass, void *data) 3095 { 3096 DeviceClass *dc = DEVICE_CLASS(klass); 3097 SCSIDeviceClass *sc = SCSI_DEVICE_CLASS(klass); 3098 SCSIDiskClass *sdc = SCSI_DISK_BASE_CLASS(klass); 3099 3100 sc->realize = scsi_block_realize; 3101 sc->alloc_req = scsi_block_new_request; 3102 sc->parse_cdb = scsi_block_parse_cdb; 3103 sdc->dma_readv = scsi_block_dma_readv; 3104 sdc->dma_writev = scsi_block_dma_writev; 3105 sdc->update_sense = scsi_block_update_sense; 3106 sdc->need_fua_emulation = scsi_block_no_fua; 3107 dc->desc = "SCSI block device passthrough"; 3108 device_class_set_props(dc, scsi_block_properties); 3109 dc->vmsd = &vmstate_scsi_disk_state; 3110 } 3111 3112 static const TypeInfo scsi_block_info = { 3113 .name = "scsi-block", 3114 .parent = TYPE_SCSI_DISK_BASE, 3115 .class_init = scsi_block_class_initfn, 3116 }; 3117 #endif 3118 3119 static Property scsi_disk_properties[] = { 3120 DEFINE_SCSI_DISK_PROPERTIES(), 3121 DEFINE_PROP_BIT("removable", SCSIDiskState, features, 3122 SCSI_DISK_F_REMOVABLE, false), 3123 DEFINE_PROP_BIT("dpofua", SCSIDiskState, features, 3124 SCSI_DISK_F_DPOFUA, false), 3125 DEFINE_PROP_UINT64("wwn", SCSIDiskState, qdev.wwn, 0), 3126 DEFINE_PROP_UINT64("port_wwn", SCSIDiskState, qdev.port_wwn, 0), 3127 DEFINE_PROP_UINT16("port_index", SCSIDiskState, port_index, 0), 3128 DEFINE_PROP_UINT64("max_unmap_size", SCSIDiskState, max_unmap_size, 3129 DEFAULT_MAX_UNMAP_SIZE), 3130 DEFINE_PROP_UINT64("max_io_size", SCSIDiskState, max_io_size, 3131 DEFAULT_MAX_IO_SIZE), 3132 DEFINE_PROP_INT32("scsi_version", SCSIDiskState, qdev.default_scsi_version, 3133 5), 3134 DEFINE_PROP_END_OF_LIST(), 3135 }; 3136 3137 static void scsi_disk_class_initfn(ObjectClass *klass, void *data) 3138 { 3139 DeviceClass *dc = DEVICE_CLASS(klass); 3140 SCSIDeviceClass *sc = SCSI_DEVICE_CLASS(klass); 3141 3142 sc->realize = scsi_disk_realize; 3143 sc->alloc_req = scsi_new_request; 3144 sc->unit_attention_reported = scsi_disk_unit_attention_reported; 3145 dc->fw_name = "disk"; 3146 dc->desc = "virtual SCSI disk or CD-ROM (legacy)"; 3147 dc->reset = scsi_disk_reset; 3148 device_class_set_props(dc, scsi_disk_properties); 3149 dc->vmsd = &vmstate_scsi_disk_state; 3150 } 3151 3152 static const TypeInfo scsi_disk_info = { 3153 .name = "scsi-disk", 3154 .parent = TYPE_SCSI_DISK_BASE, 3155 .class_init = scsi_disk_class_initfn, 3156 }; 3157 3158 static void scsi_disk_register_types(void) 3159 { 3160 type_register_static(&scsi_disk_base_info); 3161 type_register_static(&scsi_hd_info); 3162 type_register_static(&scsi_cd_info); 3163 #ifdef __linux__ 3164 type_register_static(&scsi_block_info); 3165 #endif 3166 type_register_static(&scsi_disk_info); 3167 } 3168 3169 type_init(scsi_disk_register_types) 3170