1 /* 2 * QEMU PowerPC pSeries Logical Partition (aka sPAPR) hardware System Emulator 3 * 4 * PAPR Virtual SCSI, aka ibmvscsi 5 * 6 * Copyright (c) 2010,2011 Benjamin Herrenschmidt, IBM Corporation. 7 * 8 * Permission is hereby granted, free of charge, to any person obtaining a copy 9 * of this software and associated documentation files (the "Software"), to deal 10 * in the Software without restriction, including without limitation the rights 11 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell 12 * copies of the Software, and to permit persons to whom the Software is 13 * furnished to do so, subject to the following conditions: 14 * 15 * The above copyright notice and this permission notice shall be included in 16 * all copies or substantial portions of the Software. 17 * 18 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR 19 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, 20 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL 21 * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER 22 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, 23 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN 24 * THE SOFTWARE. 25 * 26 * TODO: 27 * 28 * - Cleanups :-) 29 * - Sort out better how to assign devices to VSCSI instances 30 * - Fix residual counts 31 * - Add indirect descriptors support 32 * - Maybe do autosense (PAPR seems to mandate it, linux doesn't care) 33 */ 34 #include "hw/hw.h" 35 #include "hw/scsi/scsi.h" 36 #include "block/scsi.h" 37 #include "srp.h" 38 #include "hw/qdev.h" 39 #include "hw/ppc/spapr.h" 40 #include "hw/ppc/spapr_vio.h" 41 #include "viosrp.h" 42 43 #include <libfdt.h> 44 45 /*#define DEBUG_VSCSI*/ 46 47 #ifdef DEBUG_VSCSI 48 #define DPRINTF(fmt, ...) \ 49 do { fprintf(stderr, fmt, ## __VA_ARGS__); } while (0) 50 #else 51 #define DPRINTF(fmt, ...) \ 52 do { } while (0) 53 #endif 54 55 /* 56 * Virtual SCSI device 57 */ 58 59 /* Random numbers */ 60 #define VSCSI_MAX_SECTORS 4096 61 #define VSCSI_REQ_LIMIT 24 62 63 #define SRP_RSP_SENSE_DATA_LEN 18 64 65 #define SRP_REPORT_LUNS_WLUN 0xc10100000000000ULL 66 67 typedef union vscsi_crq { 68 struct viosrp_crq s; 69 uint8_t raw[16]; 70 } vscsi_crq; 71 72 typedef struct vscsi_req { 73 vscsi_crq crq; 74 union viosrp_iu iu; 75 76 /* SCSI request tracking */ 77 SCSIRequest *sreq; 78 uint32_t qtag; /* qemu tag != srp tag */ 79 bool active; 80 uint32_t data_len; 81 bool writing; 82 uint32_t senselen; 83 uint8_t sense[SCSI_SENSE_BUF_SIZE]; 84 85 /* RDMA related bits */ 86 uint8_t dma_fmt; 87 uint16_t local_desc; 88 uint16_t total_desc; 89 uint16_t cdb_offset; 90 uint16_t cur_desc_num; 91 uint16_t cur_desc_offset; 92 } vscsi_req; 93 94 #define TYPE_VIO_SPAPR_VSCSI_DEVICE "spapr-vscsi" 95 #define VIO_SPAPR_VSCSI_DEVICE(obj) \ 96 OBJECT_CHECK(VSCSIState, (obj), TYPE_VIO_SPAPR_VSCSI_DEVICE) 97 98 typedef struct { 99 VIOsPAPRDevice vdev; 100 SCSIBus bus; 101 vscsi_req reqs[VSCSI_REQ_LIMIT]; 102 } VSCSIState; 103 104 static struct vscsi_req *vscsi_get_req(VSCSIState *s) 105 { 106 vscsi_req *req; 107 int i; 108 109 for (i = 0; i < VSCSI_REQ_LIMIT; i++) { 110 req = &s->reqs[i]; 111 if (!req->active) { 112 memset(req, 0, sizeof(*req)); 113 req->qtag = i; 114 req->active = 1; 115 return req; 116 } 117 } 118 return NULL; 119 } 120 121 static struct vscsi_req *vscsi_find_req(VSCSIState *s, uint64_t srp_tag) 122 { 123 vscsi_req *req; 124 int i; 125 126 for (i = 0; i < VSCSI_REQ_LIMIT; i++) { 127 req = &s->reqs[i]; 128 if (req->iu.srp.cmd.tag == srp_tag) { 129 return req; 130 } 131 } 132 return NULL; 133 } 134 135 static void vscsi_put_req(vscsi_req *req) 136 { 137 if (req->sreq != NULL) { 138 scsi_req_unref(req->sreq); 139 } 140 req->sreq = NULL; 141 req->active = 0; 142 } 143 144 static SCSIDevice *vscsi_device_find(SCSIBus *bus, uint64_t srp_lun, int *lun) 145 { 146 int channel = 0, id = 0; 147 148 retry: 149 switch (srp_lun >> 62) { 150 case 0: 151 if ((srp_lun >> 56) != 0) { 152 channel = (srp_lun >> 56) & 0x3f; 153 id = (srp_lun >> 48) & 0xff; 154 srp_lun <<= 16; 155 goto retry; 156 } 157 *lun = (srp_lun >> 48) & 0xff; 158 break; 159 160 case 1: 161 *lun = (srp_lun >> 48) & 0x3fff; 162 break; 163 case 2: 164 channel = (srp_lun >> 53) & 0x7; 165 id = (srp_lun >> 56) & 0x3f; 166 *lun = (srp_lun >> 48) & 0x1f; 167 break; 168 case 3: 169 *lun = -1; 170 return NULL; 171 default: 172 abort(); 173 } 174 175 return scsi_device_find(bus, channel, id, *lun); 176 } 177 178 static int vscsi_send_iu(VSCSIState *s, vscsi_req *req, 179 uint64_t length, uint8_t format) 180 { 181 long rc, rc1; 182 183 /* First copy the SRP */ 184 rc = spapr_vio_dma_write(&s->vdev, req->crq.s.IU_data_ptr, 185 &req->iu, length); 186 if (rc) { 187 fprintf(stderr, "vscsi_send_iu: DMA write failure !\n"); 188 } 189 190 req->crq.s.valid = 0x80; 191 req->crq.s.format = format; 192 req->crq.s.reserved = 0x00; 193 req->crq.s.timeout = cpu_to_be16(0x0000); 194 req->crq.s.IU_length = cpu_to_be16(length); 195 req->crq.s.IU_data_ptr = req->iu.srp.rsp.tag; /* right byte order */ 196 197 if (rc == 0) { 198 req->crq.s.status = VIOSRP_OK; 199 } else { 200 req->crq.s.status = VIOSRP_ADAPTER_FAIL; 201 } 202 203 rc1 = spapr_vio_send_crq(&s->vdev, req->crq.raw); 204 if (rc1) { 205 fprintf(stderr, "vscsi_send_iu: Error sending response\n"); 206 return rc1; 207 } 208 209 return rc; 210 } 211 212 static void vscsi_makeup_sense(VSCSIState *s, vscsi_req *req, 213 uint8_t key, uint8_t asc, uint8_t ascq) 214 { 215 req->senselen = SRP_RSP_SENSE_DATA_LEN; 216 217 /* Valid bit and 'current errors' */ 218 req->sense[0] = (0x1 << 7 | 0x70); 219 /* Sense key */ 220 req->sense[2] = key; 221 /* Additional sense length */ 222 req->sense[7] = 0xa; /* 10 bytes */ 223 /* Additional sense code */ 224 req->sense[12] = asc; 225 req->sense[13] = ascq; 226 } 227 228 static int vscsi_send_rsp(VSCSIState *s, vscsi_req *req, 229 uint8_t status, int32_t res_in, int32_t res_out) 230 { 231 union viosrp_iu *iu = &req->iu; 232 uint64_t tag = iu->srp.rsp.tag; 233 int total_len = sizeof(iu->srp.rsp); 234 uint8_t sol_not = iu->srp.cmd.sol_not; 235 236 DPRINTF("VSCSI: Sending resp status: 0x%x, " 237 "res_in: %d, res_out: %d\n", status, res_in, res_out); 238 239 memset(iu, 0, sizeof(struct srp_rsp)); 240 iu->srp.rsp.opcode = SRP_RSP; 241 iu->srp.rsp.req_lim_delta = cpu_to_be32(1); 242 iu->srp.rsp.tag = tag; 243 244 /* Handle residuals */ 245 if (res_in < 0) { 246 iu->srp.rsp.flags |= SRP_RSP_FLAG_DIUNDER; 247 res_in = -res_in; 248 } else if (res_in) { 249 iu->srp.rsp.flags |= SRP_RSP_FLAG_DIOVER; 250 } 251 if (res_out < 0) { 252 iu->srp.rsp.flags |= SRP_RSP_FLAG_DOUNDER; 253 res_out = -res_out; 254 } else if (res_out) { 255 iu->srp.rsp.flags |= SRP_RSP_FLAG_DOOVER; 256 } 257 iu->srp.rsp.data_in_res_cnt = cpu_to_be32(res_in); 258 iu->srp.rsp.data_out_res_cnt = cpu_to_be32(res_out); 259 260 /* We don't do response data */ 261 /* iu->srp.rsp.flags &= ~SRP_RSP_FLAG_RSPVALID; */ 262 iu->srp.rsp.resp_data_len = cpu_to_be32(0); 263 264 /* Handle success vs. failure */ 265 iu->srp.rsp.status = status; 266 if (status) { 267 iu->srp.rsp.sol_not = (sol_not & 0x04) >> 2; 268 if (req->senselen) { 269 req->iu.srp.rsp.flags |= SRP_RSP_FLAG_SNSVALID; 270 req->iu.srp.rsp.sense_data_len = cpu_to_be32(req->senselen); 271 memcpy(req->iu.srp.rsp.data, req->sense, req->senselen); 272 total_len += req->senselen; 273 } 274 } else { 275 iu->srp.rsp.sol_not = (sol_not & 0x02) >> 1; 276 } 277 278 vscsi_send_iu(s, req, total_len, VIOSRP_SRP_FORMAT); 279 return 0; 280 } 281 282 static inline struct srp_direct_buf vscsi_swap_desc(struct srp_direct_buf desc) 283 { 284 desc.va = be64_to_cpu(desc.va); 285 desc.len = be32_to_cpu(desc.len); 286 return desc; 287 } 288 289 static int vscsi_fetch_desc(VSCSIState *s, struct vscsi_req *req, 290 unsigned n, unsigned buf_offset, 291 struct srp_direct_buf *ret) 292 { 293 struct srp_cmd *cmd = &req->iu.srp.cmd; 294 295 switch (req->dma_fmt) { 296 case SRP_NO_DATA_DESC: { 297 DPRINTF("VSCSI: no data descriptor\n"); 298 return 0; 299 } 300 case SRP_DATA_DESC_DIRECT: { 301 memcpy(ret, cmd->add_data + req->cdb_offset, sizeof(*ret)); 302 assert(req->cur_desc_num == 0); 303 DPRINTF("VSCSI: direct segment\n"); 304 break; 305 } 306 case SRP_DATA_DESC_INDIRECT: { 307 struct srp_indirect_buf *tmp = (struct srp_indirect_buf *) 308 (cmd->add_data + req->cdb_offset); 309 if (n < req->local_desc) { 310 *ret = tmp->desc_list[n]; 311 DPRINTF("VSCSI: indirect segment local tag=0x%x desc#%d/%d\n", 312 req->qtag, n, req->local_desc); 313 314 } else if (n < req->total_desc) { 315 int rc; 316 struct srp_direct_buf tbl_desc = vscsi_swap_desc(tmp->table_desc); 317 unsigned desc_offset = n * sizeof(struct srp_direct_buf); 318 319 if (desc_offset >= tbl_desc.len) { 320 DPRINTF("VSCSI: #%d is ouf of range (%d bytes)\n", 321 n, desc_offset); 322 return -1; 323 } 324 rc = spapr_vio_dma_read(&s->vdev, tbl_desc.va + desc_offset, 325 ret, sizeof(struct srp_direct_buf)); 326 if (rc) { 327 DPRINTF("VSCSI: spapr_vio_dma_read -> %d reading ext_desc\n", 328 rc); 329 return -1; 330 } 331 DPRINTF("VSCSI: indirect segment ext. tag=0x%x desc#%d/%d { va=%"PRIx64" len=%x }\n", 332 req->qtag, n, req->total_desc, tbl_desc.va, tbl_desc.len); 333 } else { 334 DPRINTF("VSCSI: Out of descriptors !\n"); 335 return 0; 336 } 337 break; 338 } 339 default: 340 fprintf(stderr, "VSCSI: Unknown format %x\n", req->dma_fmt); 341 return -1; 342 } 343 344 *ret = vscsi_swap_desc(*ret); 345 if (buf_offset > ret->len) { 346 DPRINTF(" offset=%x is out of a descriptor #%d boundary=%x\n", 347 buf_offset, req->cur_desc_num, ret->len); 348 return -1; 349 } 350 ret->va += buf_offset; 351 ret->len -= buf_offset; 352 353 DPRINTF(" cur=%d offs=%x ret { va=%"PRIx64" len=%x }\n", 354 req->cur_desc_num, req->cur_desc_offset, ret->va, ret->len); 355 356 return ret->len ? 1 : 0; 357 } 358 359 static int vscsi_srp_direct_data(VSCSIState *s, vscsi_req *req, 360 uint8_t *buf, uint32_t len) 361 { 362 struct srp_direct_buf md; 363 uint32_t llen; 364 int rc = 0; 365 366 rc = vscsi_fetch_desc(s, req, req->cur_desc_num, req->cur_desc_offset, &md); 367 if (rc < 0) { 368 return -1; 369 } else if (rc == 0) { 370 return 0; 371 } 372 373 llen = MIN(len, md.len); 374 if (llen) { 375 if (req->writing) { /* writing = to device = reading from memory */ 376 rc = spapr_vio_dma_read(&s->vdev, md.va, buf, llen); 377 } else { 378 rc = spapr_vio_dma_write(&s->vdev, md.va, buf, llen); 379 } 380 } 381 382 if (rc) { 383 return -1; 384 } 385 req->cur_desc_offset += llen; 386 387 return llen; 388 } 389 390 static int vscsi_srp_indirect_data(VSCSIState *s, vscsi_req *req, 391 uint8_t *buf, uint32_t len) 392 { 393 struct srp_direct_buf md; 394 int rc = 0; 395 uint32_t llen, total = 0; 396 397 DPRINTF("VSCSI: indirect segment 0x%x bytes\n", len); 398 399 /* While we have data ... */ 400 while (len) { 401 rc = vscsi_fetch_desc(s, req, req->cur_desc_num, req->cur_desc_offset, &md); 402 if (rc < 0) { 403 return -1; 404 } else if (rc == 0) { 405 break; 406 } 407 408 /* Perform transfer */ 409 llen = MIN(len, md.len); 410 if (req->writing) { /* writing = to device = reading from memory */ 411 rc = spapr_vio_dma_read(&s->vdev, md.va, buf, llen); 412 } else { 413 rc = spapr_vio_dma_write(&s->vdev, md.va, buf, llen); 414 } 415 if (rc) { 416 DPRINTF("VSCSI: spapr_vio_dma_r/w(%d) -> %d\n", req->writing, rc); 417 break; 418 } 419 DPRINTF("VSCSI: data: %02x %02x %02x %02x...\n", 420 buf[0], buf[1], buf[2], buf[3]); 421 422 len -= llen; 423 buf += llen; 424 425 total += llen; 426 427 /* Update current position in the current descriptor */ 428 req->cur_desc_offset += llen; 429 if (md.len == llen) { 430 /* Go to the next descriptor if the current one finished */ 431 ++req->cur_desc_num; 432 req->cur_desc_offset = 0; 433 } 434 } 435 436 return rc ? -1 : total; 437 } 438 439 static int vscsi_srp_transfer_data(VSCSIState *s, vscsi_req *req, 440 int writing, uint8_t *buf, uint32_t len) 441 { 442 int err = 0; 443 444 switch (req->dma_fmt) { 445 case SRP_NO_DATA_DESC: 446 DPRINTF("VSCSI: no data desc transfer, skipping 0x%x bytes\n", len); 447 break; 448 case SRP_DATA_DESC_DIRECT: 449 err = vscsi_srp_direct_data(s, req, buf, len); 450 break; 451 case SRP_DATA_DESC_INDIRECT: 452 err = vscsi_srp_indirect_data(s, req, buf, len); 453 break; 454 } 455 return err; 456 } 457 458 /* Bits from linux srp */ 459 static int data_out_desc_size(struct srp_cmd *cmd) 460 { 461 int size = 0; 462 uint8_t fmt = cmd->buf_fmt >> 4; 463 464 switch (fmt) { 465 case SRP_NO_DATA_DESC: 466 break; 467 case SRP_DATA_DESC_DIRECT: 468 size = sizeof(struct srp_direct_buf); 469 break; 470 case SRP_DATA_DESC_INDIRECT: 471 size = sizeof(struct srp_indirect_buf) + 472 sizeof(struct srp_direct_buf)*cmd->data_out_desc_cnt; 473 break; 474 default: 475 break; 476 } 477 return size; 478 } 479 480 static int vscsi_preprocess_desc(vscsi_req *req) 481 { 482 struct srp_cmd *cmd = &req->iu.srp.cmd; 483 484 req->cdb_offset = cmd->add_cdb_len & ~3; 485 486 if (req->writing) { 487 req->dma_fmt = cmd->buf_fmt >> 4; 488 } else { 489 req->cdb_offset += data_out_desc_size(cmd); 490 req->dma_fmt = cmd->buf_fmt & ((1U << 4) - 1); 491 } 492 493 switch (req->dma_fmt) { 494 case SRP_NO_DATA_DESC: 495 break; 496 case SRP_DATA_DESC_DIRECT: 497 req->total_desc = req->local_desc = 1; 498 break; 499 case SRP_DATA_DESC_INDIRECT: { 500 struct srp_indirect_buf *ind_tmp = (struct srp_indirect_buf *) 501 (cmd->add_data + req->cdb_offset); 502 503 req->total_desc = be32_to_cpu(ind_tmp->table_desc.len) / 504 sizeof(struct srp_direct_buf); 505 req->local_desc = req->writing ? cmd->data_out_desc_cnt : 506 cmd->data_in_desc_cnt; 507 break; 508 } 509 default: 510 fprintf(stderr, 511 "vscsi_preprocess_desc: Unknown format %x\n", req->dma_fmt); 512 return -1; 513 } 514 515 return 0; 516 } 517 518 /* Callback to indicate that the SCSI layer has completed a transfer. */ 519 static void vscsi_transfer_data(SCSIRequest *sreq, uint32_t len) 520 { 521 VSCSIState *s = VIO_SPAPR_VSCSI_DEVICE(sreq->bus->qbus.parent); 522 vscsi_req *req = sreq->hba_private; 523 uint8_t *buf; 524 int rc = 0; 525 526 DPRINTF("VSCSI: SCSI xfer complete tag=0x%x len=0x%x, req=%p\n", 527 sreq->tag, len, req); 528 if (req == NULL) { 529 fprintf(stderr, "VSCSI: Can't find request for tag 0x%x\n", sreq->tag); 530 return; 531 } 532 533 if (len) { 534 buf = scsi_req_get_buf(sreq); 535 rc = vscsi_srp_transfer_data(s, req, req->writing, buf, len); 536 } 537 if (rc < 0) { 538 fprintf(stderr, "VSCSI: RDMA error rc=%d!\n", rc); 539 vscsi_makeup_sense(s, req, HARDWARE_ERROR, 0, 0); 540 scsi_req_abort(req->sreq, CHECK_CONDITION); 541 return; 542 } 543 544 /* Start next chunk */ 545 req->data_len -= rc; 546 scsi_req_continue(sreq); 547 } 548 549 /* Callback to indicate that the SCSI layer has completed a transfer. */ 550 static void vscsi_command_complete(SCSIRequest *sreq, uint32_t status, size_t resid) 551 { 552 VSCSIState *s = VIO_SPAPR_VSCSI_DEVICE(sreq->bus->qbus.parent); 553 vscsi_req *req = sreq->hba_private; 554 int32_t res_in = 0, res_out = 0; 555 556 DPRINTF("VSCSI: SCSI cmd complete, tag=0x%x status=0x%x, req=%p\n", 557 sreq->tag, status, req); 558 if (req == NULL) { 559 fprintf(stderr, "VSCSI: Can't find request for tag 0x%x\n", sreq->tag); 560 return; 561 } 562 563 if (status == CHECK_CONDITION) { 564 req->senselen = scsi_req_get_sense(req->sreq, req->sense, 565 sizeof(req->sense)); 566 DPRINTF("VSCSI: Sense data, %d bytes:\n", req->senselen); 567 DPRINTF(" %02x %02x %02x %02x %02x %02x %02x %02x\n", 568 req->sense[0], req->sense[1], req->sense[2], req->sense[3], 569 req->sense[4], req->sense[5], req->sense[6], req->sense[7]); 570 DPRINTF(" %02x %02x %02x %02x %02x %02x %02x %02x\n", 571 req->sense[8], req->sense[9], req->sense[10], req->sense[11], 572 req->sense[12], req->sense[13], req->sense[14], req->sense[15]); 573 } 574 575 DPRINTF("VSCSI: Command complete err=%d\n", status); 576 if (status == 0) { 577 /* We handle overflows, not underflows for normal commands, 578 * but hopefully nobody cares 579 */ 580 if (req->writing) { 581 res_out = req->data_len; 582 } else { 583 res_in = req->data_len; 584 } 585 } 586 vscsi_send_rsp(s, req, status, res_in, res_out); 587 vscsi_put_req(req); 588 } 589 590 static void vscsi_request_cancelled(SCSIRequest *sreq) 591 { 592 vscsi_req *req = sreq->hba_private; 593 594 vscsi_put_req(req); 595 } 596 597 static const VMStateDescription vmstate_spapr_vscsi_req = { 598 .name = "spapr_vscsi_req", 599 .version_id = 1, 600 .minimum_version_id = 1, 601 .fields = (VMStateField[]) { 602 VMSTATE_BUFFER(crq.raw, vscsi_req), 603 VMSTATE_BUFFER(iu.srp.reserved, vscsi_req), 604 VMSTATE_UINT32(qtag, vscsi_req), 605 VMSTATE_BOOL(active, vscsi_req), 606 VMSTATE_UINT32(data_len, vscsi_req), 607 VMSTATE_BOOL(writing, vscsi_req), 608 VMSTATE_UINT32(senselen, vscsi_req), 609 VMSTATE_BUFFER(sense, vscsi_req), 610 VMSTATE_UINT8(dma_fmt, vscsi_req), 611 VMSTATE_UINT16(local_desc, vscsi_req), 612 VMSTATE_UINT16(total_desc, vscsi_req), 613 VMSTATE_UINT16(cdb_offset, vscsi_req), 614 /*Restart SCSI request from the beginning for now */ 615 /*VMSTATE_UINT16(cur_desc_num, vscsi_req), 616 VMSTATE_UINT16(cur_desc_offset, vscsi_req),*/ 617 VMSTATE_END_OF_LIST() 618 }, 619 }; 620 621 static void vscsi_save_request(QEMUFile *f, SCSIRequest *sreq) 622 { 623 vscsi_req *req = sreq->hba_private; 624 assert(req->active); 625 626 vmstate_save_state(f, &vmstate_spapr_vscsi_req, req); 627 628 DPRINTF("VSCSI: saving tag=%u, current desc#%d, offset=%x\n", 629 req->qtag, req->cur_desc_num, req->cur_desc_offset); 630 } 631 632 static void *vscsi_load_request(QEMUFile *f, SCSIRequest *sreq) 633 { 634 SCSIBus *bus = sreq->bus; 635 VSCSIState *s = VIO_SPAPR_VSCSI_DEVICE(bus->qbus.parent); 636 vscsi_req *req; 637 int rc; 638 639 assert(sreq->tag < VSCSI_REQ_LIMIT); 640 req = &s->reqs[sreq->tag]; 641 assert(!req->active); 642 643 memset(req, 0, sizeof(*req)); 644 rc = vmstate_load_state(f, &vmstate_spapr_vscsi_req, req, 1); 645 if (rc) { 646 fprintf(stderr, "VSCSI: failed loading request tag#%u\n", sreq->tag); 647 return NULL; 648 } 649 assert(req->active); 650 651 req->sreq = scsi_req_ref(sreq); 652 653 DPRINTF("VSCSI: restoring tag=%u, current desc#%d, offset=%x\n", 654 req->qtag, req->cur_desc_num, req->cur_desc_offset); 655 656 return req; 657 } 658 659 static void vscsi_process_login(VSCSIState *s, vscsi_req *req) 660 { 661 union viosrp_iu *iu = &req->iu; 662 struct srp_login_rsp *rsp = &iu->srp.login_rsp; 663 uint64_t tag = iu->srp.rsp.tag; 664 665 DPRINTF("VSCSI: Got login, sendin response !\n"); 666 667 /* TODO handle case that requested size is wrong and 668 * buffer format is wrong 669 */ 670 memset(iu, 0, sizeof(struct srp_login_rsp)); 671 rsp->opcode = SRP_LOGIN_RSP; 672 /* Don't advertise quite as many request as we support to 673 * keep room for management stuff etc... 674 */ 675 rsp->req_lim_delta = cpu_to_be32(VSCSI_REQ_LIMIT-2); 676 rsp->tag = tag; 677 rsp->max_it_iu_len = cpu_to_be32(sizeof(union srp_iu)); 678 rsp->max_ti_iu_len = cpu_to_be32(sizeof(union srp_iu)); 679 /* direct and indirect */ 680 rsp->buf_fmt = cpu_to_be16(SRP_BUF_FORMAT_DIRECT | SRP_BUF_FORMAT_INDIRECT); 681 682 vscsi_send_iu(s, req, sizeof(*rsp), VIOSRP_SRP_FORMAT); 683 } 684 685 static void vscsi_inquiry_no_target(VSCSIState *s, vscsi_req *req) 686 { 687 uint8_t *cdb = req->iu.srp.cmd.cdb; 688 uint8_t resp_data[36]; 689 int rc, len, alen; 690 691 /* We dont do EVPD. Also check that page_code is 0 */ 692 if ((cdb[1] & 0x01) || cdb[2] != 0) { 693 /* Send INVALID FIELD IN CDB */ 694 vscsi_makeup_sense(s, req, ILLEGAL_REQUEST, 0x24, 0); 695 vscsi_send_rsp(s, req, CHECK_CONDITION, 0, 0); 696 return; 697 } 698 alen = cdb[3]; 699 alen = (alen << 8) | cdb[4]; 700 len = MIN(alen, 36); 701 702 /* Fake up inquiry using PQ=3 */ 703 memset(resp_data, 0, 36); 704 resp_data[0] = 0x7f; /* Not capable of supporting a device here */ 705 resp_data[2] = 0x06; /* SPS-4 */ 706 resp_data[3] = 0x02; /* Resp data format */ 707 resp_data[4] = 36 - 5; /* Additional length */ 708 resp_data[7] = 0x10; /* Sync transfers */ 709 memcpy(&resp_data[16], "QEMU EMPTY ", 16); 710 memcpy(&resp_data[8], "QEMU ", 8); 711 712 req->writing = 0; 713 vscsi_preprocess_desc(req); 714 rc = vscsi_srp_transfer_data(s, req, 0, resp_data, len); 715 if (rc < 0) { 716 vscsi_makeup_sense(s, req, HARDWARE_ERROR, 0, 0); 717 vscsi_send_rsp(s, req, CHECK_CONDITION, 0, 0); 718 } else { 719 vscsi_send_rsp(s, req, 0, 36 - rc, 0); 720 } 721 } 722 723 static void vscsi_report_luns(VSCSIState *s, vscsi_req *req) 724 { 725 BusChild *kid; 726 int i, len, n, rc; 727 uint8_t *resp_data; 728 bool found_lun0; 729 730 n = 0; 731 found_lun0 = false; 732 QTAILQ_FOREACH(kid, &s->bus.qbus.children, sibling) { 733 SCSIDevice *dev = SCSI_DEVICE(kid->child); 734 735 n += 8; 736 if (dev->channel == 0 && dev->id == 0 && dev->lun == 0) { 737 found_lun0 = true; 738 } 739 } 740 if (!found_lun0) { 741 n += 8; 742 } 743 len = n+8; 744 745 resp_data = g_malloc0(len); 746 memset(resp_data, 0, len); 747 stl_be_p(resp_data, n); 748 i = found_lun0 ? 8 : 16; 749 QTAILQ_FOREACH(kid, &s->bus.qbus.children, sibling) { 750 DeviceState *qdev = kid->child; 751 SCSIDevice *dev = SCSI_DEVICE(qdev); 752 753 if (dev->id == 0 && dev->channel == 0) { 754 resp_data[i] = 0; /* Use simple LUN for 0 (SAM5 4.7.7.1) */ 755 } else { 756 resp_data[i] = (2 << 6); /* Otherwise LUN addressing (4.7.7.4) */ 757 } 758 resp_data[i] |= dev->id; 759 resp_data[i+1] = (dev->channel << 5); 760 resp_data[i+1] |= dev->lun; 761 i += 8; 762 } 763 764 vscsi_preprocess_desc(req); 765 rc = vscsi_srp_transfer_data(s, req, 0, resp_data, len); 766 g_free(resp_data); 767 if (rc < 0) { 768 vscsi_makeup_sense(s, req, HARDWARE_ERROR, 0, 0); 769 vscsi_send_rsp(s, req, CHECK_CONDITION, 0, 0); 770 } else { 771 vscsi_send_rsp(s, req, 0, len - rc, 0); 772 } 773 } 774 775 static int vscsi_queue_cmd(VSCSIState *s, vscsi_req *req) 776 { 777 union srp_iu *srp = &req->iu.srp; 778 SCSIDevice *sdev; 779 int n, lun; 780 781 if ((srp->cmd.lun == 0 || be64_to_cpu(srp->cmd.lun) == SRP_REPORT_LUNS_WLUN) 782 && srp->cmd.cdb[0] == REPORT_LUNS) { 783 vscsi_report_luns(s, req); 784 return 0; 785 } 786 787 sdev = vscsi_device_find(&s->bus, be64_to_cpu(srp->cmd.lun), &lun); 788 if (!sdev) { 789 DPRINTF("VSCSI: Command for lun %08" PRIx64 " with no drive\n", 790 be64_to_cpu(srp->cmd.lun)); 791 if (srp->cmd.cdb[0] == INQUIRY) { 792 vscsi_inquiry_no_target(s, req); 793 } else { 794 vscsi_makeup_sense(s, req, ILLEGAL_REQUEST, 0x24, 0x00); 795 vscsi_send_rsp(s, req, CHECK_CONDITION, 0, 0); 796 } return 1; 797 } 798 799 req->sreq = scsi_req_new(sdev, req->qtag, lun, srp->cmd.cdb, req); 800 n = scsi_req_enqueue(req->sreq); 801 802 DPRINTF("VSCSI: Queued command tag 0x%x CMD 0x%x LUN %d ret: %d\n", 803 req->qtag, srp->cmd.cdb[0], lun, n); 804 805 if (n) { 806 /* Transfer direction must be set before preprocessing the 807 * descriptors 808 */ 809 req->writing = (n < 1); 810 811 /* Preprocess RDMA descriptors */ 812 vscsi_preprocess_desc(req); 813 814 /* Get transfer direction and initiate transfer */ 815 if (n > 0) { 816 req->data_len = n; 817 } else if (n < 0) { 818 req->data_len = -n; 819 } 820 scsi_req_continue(req->sreq); 821 } 822 /* Don't touch req here, it may have been recycled already */ 823 824 return 0; 825 } 826 827 static int vscsi_process_tsk_mgmt(VSCSIState *s, vscsi_req *req) 828 { 829 union viosrp_iu *iu = &req->iu; 830 vscsi_req *tmpreq; 831 int i, lun = 0, resp = SRP_TSK_MGMT_COMPLETE; 832 SCSIDevice *d; 833 uint64_t tag = iu->srp.rsp.tag; 834 uint8_t sol_not = iu->srp.cmd.sol_not; 835 836 fprintf(stderr, "vscsi_process_tsk_mgmt %02x\n", 837 iu->srp.tsk_mgmt.tsk_mgmt_func); 838 839 d = vscsi_device_find(&s->bus, be64_to_cpu(req->iu.srp.tsk_mgmt.lun), &lun); 840 if (!d) { 841 resp = SRP_TSK_MGMT_FIELDS_INVALID; 842 } else { 843 switch (iu->srp.tsk_mgmt.tsk_mgmt_func) { 844 case SRP_TSK_ABORT_TASK: 845 if (d->lun != lun) { 846 resp = SRP_TSK_MGMT_FIELDS_INVALID; 847 break; 848 } 849 850 tmpreq = vscsi_find_req(s, req->iu.srp.tsk_mgmt.task_tag); 851 if (tmpreq && tmpreq->sreq) { 852 assert(tmpreq->sreq->hba_private); 853 scsi_req_cancel(tmpreq->sreq); 854 } 855 break; 856 857 case SRP_TSK_LUN_RESET: 858 if (d->lun != lun) { 859 resp = SRP_TSK_MGMT_FIELDS_INVALID; 860 break; 861 } 862 863 qdev_reset_all(&d->qdev); 864 break; 865 866 case SRP_TSK_ABORT_TASK_SET: 867 case SRP_TSK_CLEAR_TASK_SET: 868 if (d->lun != lun) { 869 resp = SRP_TSK_MGMT_FIELDS_INVALID; 870 break; 871 } 872 873 for (i = 0; i < VSCSI_REQ_LIMIT; i++) { 874 tmpreq = &s->reqs[i]; 875 if (tmpreq->iu.srp.cmd.lun != req->iu.srp.tsk_mgmt.lun) { 876 continue; 877 } 878 if (!tmpreq->active || !tmpreq->sreq) { 879 continue; 880 } 881 assert(tmpreq->sreq->hba_private); 882 scsi_req_cancel(tmpreq->sreq); 883 } 884 break; 885 886 case SRP_TSK_CLEAR_ACA: 887 resp = SRP_TSK_MGMT_NOT_SUPPORTED; 888 break; 889 890 default: 891 resp = SRP_TSK_MGMT_FIELDS_INVALID; 892 break; 893 } 894 } 895 896 /* Compose the response here as */ 897 memset(iu, 0, sizeof(struct srp_rsp) + 4); 898 iu->srp.rsp.opcode = SRP_RSP; 899 iu->srp.rsp.req_lim_delta = cpu_to_be32(1); 900 iu->srp.rsp.tag = tag; 901 iu->srp.rsp.flags |= SRP_RSP_FLAG_RSPVALID; 902 iu->srp.rsp.resp_data_len = cpu_to_be32(4); 903 if (resp) { 904 iu->srp.rsp.sol_not = (sol_not & 0x04) >> 2; 905 } else { 906 iu->srp.rsp.sol_not = (sol_not & 0x02) >> 1; 907 } 908 909 iu->srp.rsp.status = GOOD; 910 iu->srp.rsp.data[3] = resp; 911 912 vscsi_send_iu(s, req, sizeof(iu->srp.rsp) + 4, VIOSRP_SRP_FORMAT); 913 914 return 1; 915 } 916 917 static int vscsi_handle_srp_req(VSCSIState *s, vscsi_req *req) 918 { 919 union srp_iu *srp = &req->iu.srp; 920 int done = 1; 921 uint8_t opcode = srp->rsp.opcode; 922 923 switch (opcode) { 924 case SRP_LOGIN_REQ: 925 vscsi_process_login(s, req); 926 break; 927 case SRP_TSK_MGMT: 928 done = vscsi_process_tsk_mgmt(s, req); 929 break; 930 case SRP_CMD: 931 done = vscsi_queue_cmd(s, req); 932 break; 933 case SRP_LOGIN_RSP: 934 case SRP_I_LOGOUT: 935 case SRP_T_LOGOUT: 936 case SRP_RSP: 937 case SRP_CRED_REQ: 938 case SRP_CRED_RSP: 939 case SRP_AER_REQ: 940 case SRP_AER_RSP: 941 fprintf(stderr, "VSCSI: Unsupported opcode %02x\n", opcode); 942 break; 943 default: 944 fprintf(stderr, "VSCSI: Unknown type %02x\n", opcode); 945 } 946 947 return done; 948 } 949 950 static int vscsi_send_adapter_info(VSCSIState *s, vscsi_req *req) 951 { 952 struct viosrp_adapter_info *sinfo; 953 struct mad_adapter_info_data info; 954 int rc; 955 956 sinfo = &req->iu.mad.adapter_info; 957 958 #if 0 /* What for ? */ 959 rc = spapr_vio_dma_read(&s->vdev, be64_to_cpu(sinfo->buffer), 960 &info, be16_to_cpu(sinfo->common.length)); 961 if (rc) { 962 fprintf(stderr, "vscsi_send_adapter_info: DMA read failure !\n"); 963 } 964 #endif 965 memset(&info, 0, sizeof(info)); 966 strcpy(info.srp_version, SRP_VERSION); 967 memcpy(info.partition_name, "qemu", sizeof("qemu")); 968 info.partition_number = cpu_to_be32(0); 969 info.mad_version = cpu_to_be32(1); 970 info.os_type = cpu_to_be32(2); 971 info.port_max_txu[0] = cpu_to_be32(VSCSI_MAX_SECTORS << 9); 972 973 rc = spapr_vio_dma_write(&s->vdev, be64_to_cpu(sinfo->buffer), 974 &info, be16_to_cpu(sinfo->common.length)); 975 if (rc) { 976 fprintf(stderr, "vscsi_send_adapter_info: DMA write failure !\n"); 977 } 978 979 sinfo->common.status = rc ? cpu_to_be32(1) : 0; 980 981 return vscsi_send_iu(s, req, sizeof(*sinfo), VIOSRP_MAD_FORMAT); 982 } 983 984 static int vscsi_send_capabilities(VSCSIState *s, vscsi_req *req) 985 { 986 struct viosrp_capabilities *vcap; 987 struct capabilities cap = { }; 988 uint16_t len, req_len; 989 uint64_t buffer; 990 int rc; 991 992 vcap = &req->iu.mad.capabilities; 993 req_len = len = be16_to_cpu(vcap->common.length); 994 buffer = be64_to_cpu(vcap->buffer); 995 if (len > sizeof(cap)) { 996 fprintf(stderr, "vscsi_send_capabilities: capabilities size mismatch !\n"); 997 998 /* 999 * Just read and populate the structure that is known. 1000 * Zero rest of the structure. 1001 */ 1002 len = sizeof(cap); 1003 } 1004 rc = spapr_vio_dma_read(&s->vdev, buffer, &cap, len); 1005 if (rc) { 1006 fprintf(stderr, "vscsi_send_capabilities: DMA read failure !\n"); 1007 } 1008 1009 /* 1010 * Current implementation does not suppport any migration or 1011 * reservation capabilities. Construct the response telling the 1012 * guest not to use them. 1013 */ 1014 cap.flags = 0; 1015 cap.migration.ecl = 0; 1016 cap.reserve.type = 0; 1017 cap.migration.common.server_support = 0; 1018 cap.reserve.common.server_support = 0; 1019 1020 rc = spapr_vio_dma_write(&s->vdev, buffer, &cap, len); 1021 if (rc) { 1022 fprintf(stderr, "vscsi_send_capabilities: DMA write failure !\n"); 1023 } 1024 if (req_len > len) { 1025 /* 1026 * Being paranoid and lets not worry about the error code 1027 * here. Actual write of the cap is done above. 1028 */ 1029 spapr_vio_dma_set(&s->vdev, (buffer + len), 0, (req_len - len)); 1030 } 1031 vcap->common.status = rc ? cpu_to_be32(1) : 0; 1032 return vscsi_send_iu(s, req, sizeof(*vcap), VIOSRP_MAD_FORMAT); 1033 } 1034 1035 static int vscsi_handle_mad_req(VSCSIState *s, vscsi_req *req) 1036 { 1037 union mad_iu *mad = &req->iu.mad; 1038 bool request_handled = false; 1039 uint64_t retlen = 0; 1040 1041 switch (be32_to_cpu(mad->empty_iu.common.type)) { 1042 case VIOSRP_EMPTY_IU_TYPE: 1043 fprintf(stderr, "Unsupported EMPTY MAD IU\n"); 1044 retlen = sizeof(mad->empty_iu); 1045 break; 1046 case VIOSRP_ERROR_LOG_TYPE: 1047 fprintf(stderr, "Unsupported ERROR LOG MAD IU\n"); 1048 retlen = sizeof(mad->error_log); 1049 break; 1050 case VIOSRP_ADAPTER_INFO_TYPE: 1051 vscsi_send_adapter_info(s, req); 1052 request_handled = true; 1053 break; 1054 case VIOSRP_HOST_CONFIG_TYPE: 1055 retlen = sizeof(mad->host_config); 1056 break; 1057 case VIOSRP_CAPABILITIES_TYPE: 1058 vscsi_send_capabilities(s, req); 1059 request_handled = true; 1060 break; 1061 default: 1062 fprintf(stderr, "VSCSI: Unknown MAD type %02x\n", 1063 be32_to_cpu(mad->empty_iu.common.type)); 1064 /* 1065 * PAPR+ says that "The length field is set to the length 1066 * of the data structure(s) used in the command". 1067 * As we did not recognize the request type, put zero there. 1068 */ 1069 retlen = 0; 1070 } 1071 1072 if (!request_handled) { 1073 mad->empty_iu.common.status = cpu_to_be16(VIOSRP_MAD_NOT_SUPPORTED); 1074 vscsi_send_iu(s, req, retlen, VIOSRP_MAD_FORMAT); 1075 } 1076 1077 return 1; 1078 } 1079 1080 static void vscsi_got_payload(VSCSIState *s, vscsi_crq *crq) 1081 { 1082 vscsi_req *req; 1083 int done; 1084 1085 req = vscsi_get_req(s); 1086 if (req == NULL) { 1087 fprintf(stderr, "VSCSI: Failed to get a request !\n"); 1088 return; 1089 } 1090 1091 /* We only support a limited number of descriptors, we know 1092 * the ibmvscsi driver uses up to 10 max, so it should fit 1093 * in our 256 bytes IUs. If not we'll have to increase the size 1094 * of the structure. 1095 */ 1096 if (crq->s.IU_length > sizeof(union viosrp_iu)) { 1097 fprintf(stderr, "VSCSI: SRP IU too long (%d bytes) !\n", 1098 crq->s.IU_length); 1099 vscsi_put_req(req); 1100 return; 1101 } 1102 1103 /* XXX Handle failure differently ? */ 1104 if (spapr_vio_dma_read(&s->vdev, crq->s.IU_data_ptr, &req->iu, 1105 crq->s.IU_length)) { 1106 fprintf(stderr, "vscsi_got_payload: DMA read failure !\n"); 1107 vscsi_put_req(req); 1108 return; 1109 } 1110 memcpy(&req->crq, crq, sizeof(vscsi_crq)); 1111 1112 if (crq->s.format == VIOSRP_MAD_FORMAT) { 1113 done = vscsi_handle_mad_req(s, req); 1114 } else { 1115 done = vscsi_handle_srp_req(s, req); 1116 } 1117 1118 if (done) { 1119 vscsi_put_req(req); 1120 } 1121 } 1122 1123 1124 static int vscsi_do_crq(struct VIOsPAPRDevice *dev, uint8_t *crq_data) 1125 { 1126 VSCSIState *s = VIO_SPAPR_VSCSI_DEVICE(dev); 1127 vscsi_crq crq; 1128 1129 memcpy(crq.raw, crq_data, 16); 1130 crq.s.timeout = be16_to_cpu(crq.s.timeout); 1131 crq.s.IU_length = be16_to_cpu(crq.s.IU_length); 1132 crq.s.IU_data_ptr = be64_to_cpu(crq.s.IU_data_ptr); 1133 1134 DPRINTF("VSCSI: do_crq %02x %02x ...\n", crq.raw[0], crq.raw[1]); 1135 1136 switch (crq.s.valid) { 1137 case 0xc0: /* Init command/response */ 1138 1139 /* Respond to initialization request */ 1140 if (crq.s.format == 0x01) { 1141 memset(crq.raw, 0, 16); 1142 crq.s.valid = 0xc0; 1143 crq.s.format = 0x02; 1144 spapr_vio_send_crq(dev, crq.raw); 1145 } 1146 1147 /* Note that in hotplug cases, we might get a 0x02 1148 * as a result of us emitting the init request 1149 */ 1150 1151 break; 1152 case 0xff: /* Link event */ 1153 1154 /* Not handled for now */ 1155 1156 break; 1157 case 0x80: /* Payloads */ 1158 switch (crq.s.format) { 1159 case VIOSRP_SRP_FORMAT: /* AKA VSCSI request */ 1160 case VIOSRP_MAD_FORMAT: /* AKA VSCSI response */ 1161 vscsi_got_payload(s, &crq); 1162 break; 1163 case VIOSRP_OS400_FORMAT: 1164 case VIOSRP_AIX_FORMAT: 1165 case VIOSRP_LINUX_FORMAT: 1166 case VIOSRP_INLINE_FORMAT: 1167 fprintf(stderr, "vscsi_do_srq: Unsupported payload format %02x\n", 1168 crq.s.format); 1169 break; 1170 default: 1171 fprintf(stderr, "vscsi_do_srq: Unknown payload format %02x\n", 1172 crq.s.format); 1173 } 1174 break; 1175 default: 1176 fprintf(stderr, "vscsi_do_crq: unknown CRQ %02x %02x ...\n", 1177 crq.raw[0], crq.raw[1]); 1178 }; 1179 1180 return 0; 1181 } 1182 1183 static const struct SCSIBusInfo vscsi_scsi_info = { 1184 .tcq = true, 1185 .max_channel = 7, /* logical unit addressing format */ 1186 .max_target = 63, 1187 .max_lun = 31, 1188 1189 .transfer_data = vscsi_transfer_data, 1190 .complete = vscsi_command_complete, 1191 .cancel = vscsi_request_cancelled, 1192 .save_request = vscsi_save_request, 1193 .load_request = vscsi_load_request, 1194 }; 1195 1196 static void spapr_vscsi_reset(VIOsPAPRDevice *dev) 1197 { 1198 VSCSIState *s = VIO_SPAPR_VSCSI_DEVICE(dev); 1199 int i; 1200 1201 memset(s->reqs, 0, sizeof(s->reqs)); 1202 for (i = 0; i < VSCSI_REQ_LIMIT; i++) { 1203 s->reqs[i].qtag = i; 1204 } 1205 } 1206 1207 static int spapr_vscsi_init(VIOsPAPRDevice *dev) 1208 { 1209 VSCSIState *s = VIO_SPAPR_VSCSI_DEVICE(dev); 1210 Error *err = NULL; 1211 1212 dev->crq.SendFunc = vscsi_do_crq; 1213 1214 scsi_bus_new(&s->bus, sizeof(s->bus), DEVICE(dev), 1215 &vscsi_scsi_info, NULL); 1216 if (!dev->qdev.hotplugged) { 1217 scsi_bus_legacy_handle_cmdline(&s->bus, &err); 1218 if (err != NULL) { 1219 error_free(err); 1220 return -1; 1221 } 1222 } 1223 1224 return 0; 1225 } 1226 1227 void spapr_vscsi_create(VIOsPAPRBus *bus) 1228 { 1229 DeviceState *dev; 1230 1231 dev = qdev_create(&bus->bus, "spapr-vscsi"); 1232 1233 qdev_init_nofail(dev); 1234 } 1235 1236 static int spapr_vscsi_devnode(VIOsPAPRDevice *dev, void *fdt, int node_off) 1237 { 1238 int ret; 1239 1240 ret = fdt_setprop_cell(fdt, node_off, "#address-cells", 2); 1241 if (ret < 0) { 1242 return ret; 1243 } 1244 1245 ret = fdt_setprop_cell(fdt, node_off, "#size-cells", 0); 1246 if (ret < 0) { 1247 return ret; 1248 } 1249 1250 return 0; 1251 } 1252 1253 static Property spapr_vscsi_properties[] = { 1254 DEFINE_SPAPR_PROPERTIES(VSCSIState, vdev), 1255 DEFINE_PROP_END_OF_LIST(), 1256 }; 1257 1258 static const VMStateDescription vmstate_spapr_vscsi = { 1259 .name = "spapr_vscsi", 1260 .version_id = 1, 1261 .minimum_version_id = 1, 1262 .fields = (VMStateField[]) { 1263 VMSTATE_SPAPR_VIO(vdev, VSCSIState), 1264 /* VSCSI state */ 1265 /* ???? */ 1266 1267 VMSTATE_END_OF_LIST() 1268 }, 1269 }; 1270 1271 static void spapr_vscsi_class_init(ObjectClass *klass, void *data) 1272 { 1273 DeviceClass *dc = DEVICE_CLASS(klass); 1274 VIOsPAPRDeviceClass *k = VIO_SPAPR_DEVICE_CLASS(klass); 1275 1276 k->init = spapr_vscsi_init; 1277 k->reset = spapr_vscsi_reset; 1278 k->devnode = spapr_vscsi_devnode; 1279 k->dt_name = "v-scsi"; 1280 k->dt_type = "vscsi"; 1281 k->dt_compatible = "IBM,v-scsi"; 1282 k->signal_mask = 0x00000001; 1283 set_bit(DEVICE_CATEGORY_STORAGE, dc->categories); 1284 dc->props = spapr_vscsi_properties; 1285 k->rtce_window_size = 0x10000000; 1286 dc->vmsd = &vmstate_spapr_vscsi; 1287 } 1288 1289 static const TypeInfo spapr_vscsi_info = { 1290 .name = TYPE_VIO_SPAPR_VSCSI_DEVICE, 1291 .parent = TYPE_VIO_SPAPR_DEVICE, 1292 .instance_size = sizeof(VSCSIState), 1293 .class_init = spapr_vscsi_class_init, 1294 }; 1295 1296 static void spapr_vscsi_register_types(void) 1297 { 1298 type_register_static(&spapr_vscsi_info); 1299 } 1300 1301 type_init(spapr_vscsi_register_types) 1302