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 "qemu/osdep.h" 35 #include "hw/hw.h" 36 #include "hw/scsi/scsi.h" 37 #include "block/scsi.h" 38 #include "srp.h" 39 #include "hw/qdev.h" 40 #include "hw/ppc/spapr.h" 41 #include "hw/ppc/spapr_vio.h" 42 #include "viosrp.h" 43 44 #include <libfdt.h> 45 46 /*#define DEBUG_VSCSI*/ 47 48 #ifdef DEBUG_VSCSI 49 #define DPRINTF(fmt, ...) \ 50 do { fprintf(stderr, fmt, ## __VA_ARGS__); } while (0) 51 #else 52 #define DPRINTF(fmt, ...) \ 53 do { } while (0) 54 #endif 55 56 /* 57 * Virtual SCSI device 58 */ 59 60 /* Random numbers */ 61 #define VSCSI_MAX_SECTORS 4096 62 #define VSCSI_REQ_LIMIT 24 63 64 #define SRP_RSP_SENSE_DATA_LEN 18 65 66 #define SRP_REPORT_LUNS_WLUN 0xc10100000000000ULL 67 68 typedef union vscsi_crq { 69 struct viosrp_crq s; 70 uint8_t raw[16]; 71 } vscsi_crq; 72 73 typedef struct vscsi_req { 74 vscsi_crq crq; 75 union viosrp_iu iu; 76 77 /* SCSI request tracking */ 78 SCSIRequest *sreq; 79 uint32_t qtag; /* qemu tag != srp tag */ 80 bool active; 81 bool writing; 82 bool dma_error; 83 uint32_t data_len; 84 uint32_t senselen; 85 uint8_t sense[SCSI_SENSE_BUF_SIZE]; 86 87 /* RDMA related bits */ 88 uint8_t dma_fmt; 89 uint16_t local_desc; 90 uint16_t total_desc; 91 uint16_t cdb_offset; 92 uint16_t cur_desc_num; 93 uint16_t cur_desc_offset; 94 } vscsi_req; 95 96 #define TYPE_VIO_SPAPR_VSCSI_DEVICE "spapr-vscsi" 97 #define VIO_SPAPR_VSCSI_DEVICE(obj) \ 98 OBJECT_CHECK(VSCSIState, (obj), TYPE_VIO_SPAPR_VSCSI_DEVICE) 99 100 typedef struct { 101 VIOsPAPRDevice vdev; 102 SCSIBus bus; 103 vscsi_req reqs[VSCSI_REQ_LIMIT]; 104 } VSCSIState; 105 106 static struct vscsi_req *vscsi_get_req(VSCSIState *s) 107 { 108 vscsi_req *req; 109 int i; 110 111 for (i = 0; i < VSCSI_REQ_LIMIT; i++) { 112 req = &s->reqs[i]; 113 if (!req->active) { 114 memset(req, 0, sizeof(*req)); 115 req->qtag = i; 116 req->active = 1; 117 return req; 118 } 119 } 120 return NULL; 121 } 122 123 static struct vscsi_req *vscsi_find_req(VSCSIState *s, uint64_t srp_tag) 124 { 125 vscsi_req *req; 126 int i; 127 128 for (i = 0; i < VSCSI_REQ_LIMIT; i++) { 129 req = &s->reqs[i]; 130 if (req->iu.srp.cmd.tag == srp_tag) { 131 return req; 132 } 133 } 134 return NULL; 135 } 136 137 static void vscsi_put_req(vscsi_req *req) 138 { 139 if (req->sreq != NULL) { 140 scsi_req_unref(req->sreq); 141 } 142 req->sreq = NULL; 143 req->active = 0; 144 } 145 146 static SCSIDevice *vscsi_device_find(SCSIBus *bus, uint64_t srp_lun, int *lun) 147 { 148 int channel = 0, id = 0; 149 150 retry: 151 switch (srp_lun >> 62) { 152 case 0: 153 if ((srp_lun >> 56) != 0) { 154 channel = (srp_lun >> 56) & 0x3f; 155 id = (srp_lun >> 48) & 0xff; 156 srp_lun <<= 16; 157 goto retry; 158 } 159 *lun = (srp_lun >> 48) & 0xff; 160 break; 161 162 case 1: 163 *lun = (srp_lun >> 48) & 0x3fff; 164 break; 165 case 2: 166 channel = (srp_lun >> 53) & 0x7; 167 id = (srp_lun >> 56) & 0x3f; 168 *lun = (srp_lun >> 48) & 0x1f; 169 break; 170 case 3: 171 *lun = -1; 172 return NULL; 173 default: 174 abort(); 175 } 176 177 return scsi_device_find(bus, channel, id, *lun); 178 } 179 180 static int vscsi_send_iu(VSCSIState *s, vscsi_req *req, 181 uint64_t length, uint8_t format) 182 { 183 long rc, rc1; 184 185 /* First copy the SRP */ 186 rc = spapr_vio_dma_write(&s->vdev, req->crq.s.IU_data_ptr, 187 &req->iu, length); 188 if (rc) { 189 fprintf(stderr, "vscsi_send_iu: DMA write failure !\n"); 190 } 191 192 req->crq.s.valid = 0x80; 193 req->crq.s.format = format; 194 req->crq.s.reserved = 0x00; 195 req->crq.s.timeout = cpu_to_be16(0x0000); 196 req->crq.s.IU_length = cpu_to_be16(length); 197 req->crq.s.IU_data_ptr = req->iu.srp.rsp.tag; /* right byte order */ 198 199 if (rc == 0) { 200 req->crq.s.status = VIOSRP_OK; 201 } else { 202 req->crq.s.status = VIOSRP_ADAPTER_FAIL; 203 } 204 205 rc1 = spapr_vio_send_crq(&s->vdev, req->crq.raw); 206 if (rc1) { 207 fprintf(stderr, "vscsi_send_iu: Error sending response\n"); 208 return rc1; 209 } 210 211 return rc; 212 } 213 214 static void vscsi_makeup_sense(VSCSIState *s, vscsi_req *req, 215 uint8_t key, uint8_t asc, uint8_t ascq) 216 { 217 req->senselen = SRP_RSP_SENSE_DATA_LEN; 218 219 /* Valid bit and 'current errors' */ 220 req->sense[0] = (0x1 << 7 | 0x70); 221 /* Sense key */ 222 req->sense[2] = key; 223 /* Additional sense length */ 224 req->sense[7] = 0xa; /* 10 bytes */ 225 /* Additional sense code */ 226 req->sense[12] = asc; 227 req->sense[13] = ascq; 228 } 229 230 static int vscsi_send_rsp(VSCSIState *s, vscsi_req *req, 231 uint8_t status, int32_t res_in, int32_t res_out) 232 { 233 union viosrp_iu *iu = &req->iu; 234 uint64_t tag = iu->srp.rsp.tag; 235 int total_len = sizeof(iu->srp.rsp); 236 uint8_t sol_not = iu->srp.cmd.sol_not; 237 238 DPRINTF("VSCSI: Sending resp status: 0x%x, " 239 "res_in: %d, res_out: %d\n", status, res_in, res_out); 240 241 memset(iu, 0, sizeof(struct srp_rsp)); 242 iu->srp.rsp.opcode = SRP_RSP; 243 iu->srp.rsp.req_lim_delta = cpu_to_be32(1); 244 iu->srp.rsp.tag = tag; 245 246 /* Handle residuals */ 247 if (res_in < 0) { 248 iu->srp.rsp.flags |= SRP_RSP_FLAG_DIUNDER; 249 res_in = -res_in; 250 } else if (res_in) { 251 iu->srp.rsp.flags |= SRP_RSP_FLAG_DIOVER; 252 } 253 if (res_out < 0) { 254 iu->srp.rsp.flags |= SRP_RSP_FLAG_DOUNDER; 255 res_out = -res_out; 256 } else if (res_out) { 257 iu->srp.rsp.flags |= SRP_RSP_FLAG_DOOVER; 258 } 259 iu->srp.rsp.data_in_res_cnt = cpu_to_be32(res_in); 260 iu->srp.rsp.data_out_res_cnt = cpu_to_be32(res_out); 261 262 /* We don't do response data */ 263 /* iu->srp.rsp.flags &= ~SRP_RSP_FLAG_RSPVALID; */ 264 iu->srp.rsp.resp_data_len = cpu_to_be32(0); 265 266 /* Handle success vs. failure */ 267 iu->srp.rsp.status = status; 268 if (status) { 269 iu->srp.rsp.sol_not = (sol_not & 0x04) >> 2; 270 if (req->senselen) { 271 req->iu.srp.rsp.flags |= SRP_RSP_FLAG_SNSVALID; 272 req->iu.srp.rsp.sense_data_len = cpu_to_be32(req->senselen); 273 memcpy(req->iu.srp.rsp.data, req->sense, req->senselen); 274 total_len += req->senselen; 275 } 276 } else { 277 iu->srp.rsp.sol_not = (sol_not & 0x02) >> 1; 278 } 279 280 vscsi_send_iu(s, req, total_len, VIOSRP_SRP_FORMAT); 281 return 0; 282 } 283 284 static inline struct srp_direct_buf vscsi_swap_desc(struct srp_direct_buf desc) 285 { 286 desc.va = be64_to_cpu(desc.va); 287 desc.len = be32_to_cpu(desc.len); 288 return desc; 289 } 290 291 static int vscsi_fetch_desc(VSCSIState *s, struct vscsi_req *req, 292 unsigned n, unsigned buf_offset, 293 struct srp_direct_buf *ret) 294 { 295 struct srp_cmd *cmd = &req->iu.srp.cmd; 296 297 switch (req->dma_fmt) { 298 case SRP_NO_DATA_DESC: { 299 DPRINTF("VSCSI: no data descriptor\n"); 300 return 0; 301 } 302 case SRP_DATA_DESC_DIRECT: { 303 memcpy(ret, cmd->add_data + req->cdb_offset, sizeof(*ret)); 304 assert(req->cur_desc_num == 0); 305 DPRINTF("VSCSI: direct segment\n"); 306 break; 307 } 308 case SRP_DATA_DESC_INDIRECT: { 309 struct srp_indirect_buf *tmp = (struct srp_indirect_buf *) 310 (cmd->add_data + req->cdb_offset); 311 if (n < req->local_desc) { 312 *ret = tmp->desc_list[n]; 313 DPRINTF("VSCSI: indirect segment local tag=0x%x desc#%d/%d\n", 314 req->qtag, n, req->local_desc); 315 316 } else if (n < req->total_desc) { 317 int rc; 318 struct srp_direct_buf tbl_desc = vscsi_swap_desc(tmp->table_desc); 319 unsigned desc_offset = n * sizeof(struct srp_direct_buf); 320 321 if (desc_offset >= tbl_desc.len) { 322 DPRINTF("VSCSI: #%d is ouf of range (%d bytes)\n", 323 n, desc_offset); 324 return -1; 325 } 326 rc = spapr_vio_dma_read(&s->vdev, tbl_desc.va + desc_offset, 327 ret, sizeof(struct srp_direct_buf)); 328 if (rc) { 329 DPRINTF("VSCSI: spapr_vio_dma_read -> %d reading ext_desc\n", 330 rc); 331 return -1; 332 } 333 DPRINTF("VSCSI: indirect segment ext. tag=0x%x desc#%d/%d { va=%"PRIx64" len=%x }\n", 334 req->qtag, n, req->total_desc, tbl_desc.va, tbl_desc.len); 335 } else { 336 DPRINTF("VSCSI: Out of descriptors !\n"); 337 return 0; 338 } 339 break; 340 } 341 default: 342 fprintf(stderr, "VSCSI: Unknown format %x\n", req->dma_fmt); 343 return -1; 344 } 345 346 *ret = vscsi_swap_desc(*ret); 347 if (buf_offset > ret->len) { 348 DPRINTF(" offset=%x is out of a descriptor #%d boundary=%x\n", 349 buf_offset, req->cur_desc_num, ret->len); 350 return -1; 351 } 352 ret->va += buf_offset; 353 ret->len -= buf_offset; 354 355 DPRINTF(" cur=%d offs=%x ret { va=%"PRIx64" len=%x }\n", 356 req->cur_desc_num, req->cur_desc_offset, ret->va, ret->len); 357 358 return ret->len ? 1 : 0; 359 } 360 361 static int vscsi_srp_direct_data(VSCSIState *s, vscsi_req *req, 362 uint8_t *buf, uint32_t len) 363 { 364 struct srp_direct_buf md; 365 uint32_t llen; 366 int rc = 0; 367 368 rc = vscsi_fetch_desc(s, req, req->cur_desc_num, req->cur_desc_offset, &md); 369 if (rc < 0) { 370 return -1; 371 } else if (rc == 0) { 372 return 0; 373 } 374 375 llen = MIN(len, md.len); 376 if (llen) { 377 if (req->writing) { /* writing = to device = reading from memory */ 378 rc = spapr_vio_dma_read(&s->vdev, md.va, buf, llen); 379 } else { 380 rc = spapr_vio_dma_write(&s->vdev, md.va, buf, llen); 381 } 382 } 383 384 if (rc) { 385 return -1; 386 } 387 req->cur_desc_offset += llen; 388 389 return llen; 390 } 391 392 static int vscsi_srp_indirect_data(VSCSIState *s, vscsi_req *req, 393 uint8_t *buf, uint32_t len) 394 { 395 struct srp_direct_buf md; 396 int rc = 0; 397 uint32_t llen, total = 0; 398 399 DPRINTF("VSCSI: indirect segment 0x%x bytes\n", len); 400 401 /* While we have data ... */ 402 while (len) { 403 rc = vscsi_fetch_desc(s, req, req->cur_desc_num, req->cur_desc_offset, &md); 404 if (rc < 0) { 405 return -1; 406 } else if (rc == 0) { 407 break; 408 } 409 410 /* Perform transfer */ 411 llen = MIN(len, md.len); 412 if (req->writing) { /* writing = to device = reading from memory */ 413 rc = spapr_vio_dma_read(&s->vdev, md.va, buf, llen); 414 } else { 415 rc = spapr_vio_dma_write(&s->vdev, md.va, buf, llen); 416 } 417 if (rc) { 418 DPRINTF("VSCSI: spapr_vio_dma_r/w(%d) -> %d\n", req->writing, rc); 419 break; 420 } 421 DPRINTF("VSCSI: data: %02x %02x %02x %02x...\n", 422 buf[0], buf[1], buf[2], buf[3]); 423 424 len -= llen; 425 buf += llen; 426 427 total += llen; 428 429 /* Update current position in the current descriptor */ 430 req->cur_desc_offset += llen; 431 if (md.len == llen) { 432 /* Go to the next descriptor if the current one finished */ 433 ++req->cur_desc_num; 434 req->cur_desc_offset = 0; 435 } 436 } 437 438 return rc ? -1 : total; 439 } 440 441 static int vscsi_srp_transfer_data(VSCSIState *s, vscsi_req *req, 442 int writing, uint8_t *buf, uint32_t len) 443 { 444 int err = 0; 445 446 switch (req->dma_fmt) { 447 case SRP_NO_DATA_DESC: 448 DPRINTF("VSCSI: no data desc transfer, skipping 0x%x bytes\n", len); 449 break; 450 case SRP_DATA_DESC_DIRECT: 451 err = vscsi_srp_direct_data(s, req, buf, len); 452 break; 453 case SRP_DATA_DESC_INDIRECT: 454 err = vscsi_srp_indirect_data(s, req, buf, len); 455 break; 456 } 457 return err; 458 } 459 460 /* Bits from linux srp */ 461 static int data_out_desc_size(struct srp_cmd *cmd) 462 { 463 int size = 0; 464 uint8_t fmt = cmd->buf_fmt >> 4; 465 466 switch (fmt) { 467 case SRP_NO_DATA_DESC: 468 break; 469 case SRP_DATA_DESC_DIRECT: 470 size = sizeof(struct srp_direct_buf); 471 break; 472 case SRP_DATA_DESC_INDIRECT: 473 size = sizeof(struct srp_indirect_buf) + 474 sizeof(struct srp_direct_buf)*cmd->data_out_desc_cnt; 475 break; 476 default: 477 break; 478 } 479 return size; 480 } 481 482 static int vscsi_preprocess_desc(vscsi_req *req) 483 { 484 struct srp_cmd *cmd = &req->iu.srp.cmd; 485 486 req->cdb_offset = cmd->add_cdb_len & ~3; 487 488 if (req->writing) { 489 req->dma_fmt = cmd->buf_fmt >> 4; 490 } else { 491 req->cdb_offset += data_out_desc_size(cmd); 492 req->dma_fmt = cmd->buf_fmt & ((1U << 4) - 1); 493 } 494 495 switch (req->dma_fmt) { 496 case SRP_NO_DATA_DESC: 497 break; 498 case SRP_DATA_DESC_DIRECT: 499 req->total_desc = req->local_desc = 1; 500 break; 501 case SRP_DATA_DESC_INDIRECT: { 502 struct srp_indirect_buf *ind_tmp = (struct srp_indirect_buf *) 503 (cmd->add_data + req->cdb_offset); 504 505 req->total_desc = be32_to_cpu(ind_tmp->table_desc.len) / 506 sizeof(struct srp_direct_buf); 507 req->local_desc = req->writing ? cmd->data_out_desc_cnt : 508 cmd->data_in_desc_cnt; 509 break; 510 } 511 default: 512 fprintf(stderr, 513 "vscsi_preprocess_desc: Unknown format %x\n", req->dma_fmt); 514 return -1; 515 } 516 517 return 0; 518 } 519 520 /* Callback to indicate that the SCSI layer has completed a transfer. */ 521 static void vscsi_transfer_data(SCSIRequest *sreq, uint32_t len) 522 { 523 VSCSIState *s = VIO_SPAPR_VSCSI_DEVICE(sreq->bus->qbus.parent); 524 vscsi_req *req = sreq->hba_private; 525 uint8_t *buf; 526 int rc = 0; 527 528 DPRINTF("VSCSI: SCSI xfer complete tag=0x%x len=0x%x, req=%p\n", 529 sreq->tag, len, req); 530 if (req == NULL) { 531 fprintf(stderr, "VSCSI: Can't find request for tag 0x%x\n", sreq->tag); 532 return; 533 } 534 535 if (len) { 536 buf = scsi_req_get_buf(sreq); 537 rc = vscsi_srp_transfer_data(s, req, req->writing, buf, len); 538 } 539 if (rc < 0) { 540 fprintf(stderr, "VSCSI: RDMA error rc=%d!\n", rc); 541 req->dma_error = true; 542 scsi_req_cancel(req->sreq); 543 return; 544 } 545 546 /* Start next chunk */ 547 req->data_len -= rc; 548 scsi_req_continue(sreq); 549 } 550 551 /* Callback to indicate that the SCSI layer has completed a transfer. */ 552 static void vscsi_command_complete(SCSIRequest *sreq, uint32_t status, size_t resid) 553 { 554 VSCSIState *s = VIO_SPAPR_VSCSI_DEVICE(sreq->bus->qbus.parent); 555 vscsi_req *req = sreq->hba_private; 556 int32_t res_in = 0, res_out = 0; 557 558 DPRINTF("VSCSI: SCSI cmd complete, tag=0x%x status=0x%x, req=%p\n", 559 sreq->tag, status, req); 560 if (req == NULL) { 561 fprintf(stderr, "VSCSI: Can't find request for tag 0x%x\n", sreq->tag); 562 return; 563 } 564 565 if (status == CHECK_CONDITION) { 566 req->senselen = scsi_req_get_sense(req->sreq, req->sense, 567 sizeof(req->sense)); 568 DPRINTF("VSCSI: Sense data, %d bytes:\n", req->senselen); 569 DPRINTF(" %02x %02x %02x %02x %02x %02x %02x %02x\n", 570 req->sense[0], req->sense[1], req->sense[2], req->sense[3], 571 req->sense[4], req->sense[5], req->sense[6], req->sense[7]); 572 DPRINTF(" %02x %02x %02x %02x %02x %02x %02x %02x\n", 573 req->sense[8], req->sense[9], req->sense[10], req->sense[11], 574 req->sense[12], req->sense[13], req->sense[14], req->sense[15]); 575 } 576 577 DPRINTF("VSCSI: Command complete err=%d\n", status); 578 if (status == 0) { 579 /* We handle overflows, not underflows for normal commands, 580 * but hopefully nobody cares 581 */ 582 if (req->writing) { 583 res_out = req->data_len; 584 } else { 585 res_in = req->data_len; 586 } 587 } 588 vscsi_send_rsp(s, req, status, res_in, res_out); 589 vscsi_put_req(req); 590 } 591 592 static void vscsi_request_cancelled(SCSIRequest *sreq) 593 { 594 vscsi_req *req = sreq->hba_private; 595 596 if (req->dma_error) { 597 VSCSIState *s = VIO_SPAPR_VSCSI_DEVICE(sreq->bus->qbus.parent); 598 599 vscsi_makeup_sense(s, req, HARDWARE_ERROR, 0, 0); 600 vscsi_send_rsp(s, req, CHECK_CONDITION, 0, 0); 601 } 602 vscsi_put_req(req); 603 } 604 605 static const VMStateDescription vmstate_spapr_vscsi_req = { 606 .name = "spapr_vscsi_req", 607 .version_id = 1, 608 .minimum_version_id = 1, 609 .fields = (VMStateField[]) { 610 VMSTATE_BUFFER(crq.raw, vscsi_req), 611 VMSTATE_BUFFER(iu.srp.reserved, vscsi_req), 612 VMSTATE_UINT32(qtag, vscsi_req), 613 VMSTATE_BOOL(active, vscsi_req), 614 VMSTATE_UINT32(data_len, vscsi_req), 615 VMSTATE_BOOL(writing, vscsi_req), 616 VMSTATE_UINT32(senselen, vscsi_req), 617 VMSTATE_BUFFER(sense, vscsi_req), 618 VMSTATE_UINT8(dma_fmt, vscsi_req), 619 VMSTATE_UINT16(local_desc, vscsi_req), 620 VMSTATE_UINT16(total_desc, vscsi_req), 621 VMSTATE_UINT16(cdb_offset, vscsi_req), 622 /*Restart SCSI request from the beginning for now */ 623 /*VMSTATE_UINT16(cur_desc_num, vscsi_req), 624 VMSTATE_UINT16(cur_desc_offset, vscsi_req),*/ 625 VMSTATE_END_OF_LIST() 626 }, 627 }; 628 629 static void vscsi_save_request(QEMUFile *f, SCSIRequest *sreq) 630 { 631 vscsi_req *req = sreq->hba_private; 632 assert(req->active); 633 634 vmstate_save_state(f, &vmstate_spapr_vscsi_req, req, NULL); 635 636 DPRINTF("VSCSI: saving tag=%u, current desc#%d, offset=%x\n", 637 req->qtag, req->cur_desc_num, req->cur_desc_offset); 638 } 639 640 static void *vscsi_load_request(QEMUFile *f, SCSIRequest *sreq) 641 { 642 SCSIBus *bus = sreq->bus; 643 VSCSIState *s = VIO_SPAPR_VSCSI_DEVICE(bus->qbus.parent); 644 vscsi_req *req; 645 int rc; 646 647 assert(sreq->tag < VSCSI_REQ_LIMIT); 648 req = &s->reqs[sreq->tag]; 649 assert(!req->active); 650 651 memset(req, 0, sizeof(*req)); 652 rc = vmstate_load_state(f, &vmstate_spapr_vscsi_req, req, 1); 653 if (rc) { 654 fprintf(stderr, "VSCSI: failed loading request tag#%u\n", sreq->tag); 655 return NULL; 656 } 657 assert(req->active); 658 659 req->sreq = scsi_req_ref(sreq); 660 661 DPRINTF("VSCSI: restoring tag=%u, current desc#%d, offset=%x\n", 662 req->qtag, req->cur_desc_num, req->cur_desc_offset); 663 664 return req; 665 } 666 667 static void vscsi_process_login(VSCSIState *s, vscsi_req *req) 668 { 669 union viosrp_iu *iu = &req->iu; 670 struct srp_login_rsp *rsp = &iu->srp.login_rsp; 671 uint64_t tag = iu->srp.rsp.tag; 672 673 DPRINTF("VSCSI: Got login, sendin response !\n"); 674 675 /* TODO handle case that requested size is wrong and 676 * buffer format is wrong 677 */ 678 memset(iu, 0, sizeof(struct srp_login_rsp)); 679 rsp->opcode = SRP_LOGIN_RSP; 680 /* Don't advertise quite as many request as we support to 681 * keep room for management stuff etc... 682 */ 683 rsp->req_lim_delta = cpu_to_be32(VSCSI_REQ_LIMIT-2); 684 rsp->tag = tag; 685 rsp->max_it_iu_len = cpu_to_be32(sizeof(union srp_iu)); 686 rsp->max_ti_iu_len = cpu_to_be32(sizeof(union srp_iu)); 687 /* direct and indirect */ 688 rsp->buf_fmt = cpu_to_be16(SRP_BUF_FORMAT_DIRECT | SRP_BUF_FORMAT_INDIRECT); 689 690 vscsi_send_iu(s, req, sizeof(*rsp), VIOSRP_SRP_FORMAT); 691 } 692 693 static void vscsi_inquiry_no_target(VSCSIState *s, vscsi_req *req) 694 { 695 uint8_t *cdb = req->iu.srp.cmd.cdb; 696 uint8_t resp_data[36]; 697 int rc, len, alen; 698 699 /* We dont do EVPD. Also check that page_code is 0 */ 700 if ((cdb[1] & 0x01) || cdb[2] != 0) { 701 /* Send INVALID FIELD IN CDB */ 702 vscsi_makeup_sense(s, req, ILLEGAL_REQUEST, 0x24, 0); 703 vscsi_send_rsp(s, req, CHECK_CONDITION, 0, 0); 704 return; 705 } 706 alen = cdb[3]; 707 alen = (alen << 8) | cdb[4]; 708 len = MIN(alen, 36); 709 710 /* Fake up inquiry using PQ=3 */ 711 memset(resp_data, 0, 36); 712 resp_data[0] = 0x7f; /* Not capable of supporting a device here */ 713 resp_data[2] = 0x06; /* SPS-4 */ 714 resp_data[3] = 0x02; /* Resp data format */ 715 resp_data[4] = 36 - 5; /* Additional length */ 716 resp_data[7] = 0x10; /* Sync transfers */ 717 memcpy(&resp_data[16], "QEMU EMPTY ", 16); 718 memcpy(&resp_data[8], "QEMU ", 8); 719 720 req->writing = 0; 721 vscsi_preprocess_desc(req); 722 rc = vscsi_srp_transfer_data(s, req, 0, resp_data, len); 723 if (rc < 0) { 724 vscsi_makeup_sense(s, req, HARDWARE_ERROR, 0, 0); 725 vscsi_send_rsp(s, req, CHECK_CONDITION, 0, 0); 726 } else { 727 vscsi_send_rsp(s, req, 0, 36 - rc, 0); 728 } 729 } 730 731 static void vscsi_report_luns(VSCSIState *s, vscsi_req *req) 732 { 733 BusChild *kid; 734 int i, len, n, rc; 735 uint8_t *resp_data; 736 bool found_lun0; 737 738 n = 0; 739 found_lun0 = false; 740 QTAILQ_FOREACH(kid, &s->bus.qbus.children, sibling) { 741 SCSIDevice *dev = SCSI_DEVICE(kid->child); 742 743 n += 8; 744 if (dev->channel == 0 && dev->id == 0 && dev->lun == 0) { 745 found_lun0 = true; 746 } 747 } 748 if (!found_lun0) { 749 n += 8; 750 } 751 len = n+8; 752 753 resp_data = g_malloc0(len); 754 stl_be_p(resp_data, n); 755 i = found_lun0 ? 8 : 16; 756 QTAILQ_FOREACH(kid, &s->bus.qbus.children, sibling) { 757 DeviceState *qdev = kid->child; 758 SCSIDevice *dev = SCSI_DEVICE(qdev); 759 760 if (dev->id == 0 && dev->channel == 0) { 761 resp_data[i] = 0; /* Use simple LUN for 0 (SAM5 4.7.7.1) */ 762 } else { 763 resp_data[i] = (2 << 6); /* Otherwise LUN addressing (4.7.7.4) */ 764 } 765 resp_data[i] |= dev->id; 766 resp_data[i+1] = (dev->channel << 5); 767 resp_data[i+1] |= dev->lun; 768 i += 8; 769 } 770 771 vscsi_preprocess_desc(req); 772 rc = vscsi_srp_transfer_data(s, req, 0, resp_data, len); 773 g_free(resp_data); 774 if (rc < 0) { 775 vscsi_makeup_sense(s, req, HARDWARE_ERROR, 0, 0); 776 vscsi_send_rsp(s, req, CHECK_CONDITION, 0, 0); 777 } else { 778 vscsi_send_rsp(s, req, 0, len - rc, 0); 779 } 780 } 781 782 static int vscsi_queue_cmd(VSCSIState *s, vscsi_req *req) 783 { 784 union srp_iu *srp = &req->iu.srp; 785 SCSIDevice *sdev; 786 int n, lun; 787 788 if ((srp->cmd.lun == 0 || be64_to_cpu(srp->cmd.lun) == SRP_REPORT_LUNS_WLUN) 789 && srp->cmd.cdb[0] == REPORT_LUNS) { 790 vscsi_report_luns(s, req); 791 return 0; 792 } 793 794 sdev = vscsi_device_find(&s->bus, be64_to_cpu(srp->cmd.lun), &lun); 795 if (!sdev) { 796 DPRINTF("VSCSI: Command for lun %08" PRIx64 " with no drive\n", 797 be64_to_cpu(srp->cmd.lun)); 798 if (srp->cmd.cdb[0] == INQUIRY) { 799 vscsi_inquiry_no_target(s, req); 800 } else { 801 vscsi_makeup_sense(s, req, ILLEGAL_REQUEST, 0x24, 0x00); 802 vscsi_send_rsp(s, req, CHECK_CONDITION, 0, 0); 803 } return 1; 804 } 805 806 req->sreq = scsi_req_new(sdev, req->qtag, lun, srp->cmd.cdb, req); 807 n = scsi_req_enqueue(req->sreq); 808 809 DPRINTF("VSCSI: Queued command tag 0x%x CMD 0x%x=%s LUN %d ret: %d\n", 810 req->qtag, srp->cmd.cdb[0], scsi_command_name(srp->cmd.cdb[0]), 811 lun, n); 812 813 if (n) { 814 /* Transfer direction must be set before preprocessing the 815 * descriptors 816 */ 817 req->writing = (n < 1); 818 819 /* Preprocess RDMA descriptors */ 820 vscsi_preprocess_desc(req); 821 822 /* Get transfer direction and initiate transfer */ 823 if (n > 0) { 824 req->data_len = n; 825 } else if (n < 0) { 826 req->data_len = -n; 827 } 828 scsi_req_continue(req->sreq); 829 } 830 /* Don't touch req here, it may have been recycled already */ 831 832 return 0; 833 } 834 835 static int vscsi_process_tsk_mgmt(VSCSIState *s, vscsi_req *req) 836 { 837 union viosrp_iu *iu = &req->iu; 838 vscsi_req *tmpreq; 839 int i, lun = 0, resp = SRP_TSK_MGMT_COMPLETE; 840 SCSIDevice *d; 841 uint64_t tag = iu->srp.rsp.tag; 842 uint8_t sol_not = iu->srp.cmd.sol_not; 843 844 fprintf(stderr, "vscsi_process_tsk_mgmt %02x\n", 845 iu->srp.tsk_mgmt.tsk_mgmt_func); 846 847 d = vscsi_device_find(&s->bus, be64_to_cpu(req->iu.srp.tsk_mgmt.lun), &lun); 848 if (!d) { 849 resp = SRP_TSK_MGMT_FIELDS_INVALID; 850 } else { 851 switch (iu->srp.tsk_mgmt.tsk_mgmt_func) { 852 case SRP_TSK_ABORT_TASK: 853 if (d->lun != lun) { 854 resp = SRP_TSK_MGMT_FIELDS_INVALID; 855 break; 856 } 857 858 tmpreq = vscsi_find_req(s, req->iu.srp.tsk_mgmt.task_tag); 859 if (tmpreq && tmpreq->sreq) { 860 assert(tmpreq->sreq->hba_private); 861 scsi_req_cancel(tmpreq->sreq); 862 } 863 break; 864 865 case SRP_TSK_LUN_RESET: 866 if (d->lun != lun) { 867 resp = SRP_TSK_MGMT_FIELDS_INVALID; 868 break; 869 } 870 871 qdev_reset_all(&d->qdev); 872 break; 873 874 case SRP_TSK_ABORT_TASK_SET: 875 case SRP_TSK_CLEAR_TASK_SET: 876 if (d->lun != lun) { 877 resp = SRP_TSK_MGMT_FIELDS_INVALID; 878 break; 879 } 880 881 for (i = 0; i < VSCSI_REQ_LIMIT; i++) { 882 tmpreq = &s->reqs[i]; 883 if (tmpreq->iu.srp.cmd.lun != req->iu.srp.tsk_mgmt.lun) { 884 continue; 885 } 886 if (!tmpreq->active || !tmpreq->sreq) { 887 continue; 888 } 889 assert(tmpreq->sreq->hba_private); 890 scsi_req_cancel(tmpreq->sreq); 891 } 892 break; 893 894 case SRP_TSK_CLEAR_ACA: 895 resp = SRP_TSK_MGMT_NOT_SUPPORTED; 896 break; 897 898 default: 899 resp = SRP_TSK_MGMT_FIELDS_INVALID; 900 break; 901 } 902 } 903 904 /* Compose the response here as */ 905 memset(iu, 0, sizeof(struct srp_rsp) + 4); 906 iu->srp.rsp.opcode = SRP_RSP; 907 iu->srp.rsp.req_lim_delta = cpu_to_be32(1); 908 iu->srp.rsp.tag = tag; 909 iu->srp.rsp.flags |= SRP_RSP_FLAG_RSPVALID; 910 iu->srp.rsp.resp_data_len = cpu_to_be32(4); 911 if (resp) { 912 iu->srp.rsp.sol_not = (sol_not & 0x04) >> 2; 913 } else { 914 iu->srp.rsp.sol_not = (sol_not & 0x02) >> 1; 915 } 916 917 iu->srp.rsp.status = GOOD; 918 iu->srp.rsp.data[3] = resp; 919 920 vscsi_send_iu(s, req, sizeof(iu->srp.rsp) + 4, VIOSRP_SRP_FORMAT); 921 922 return 1; 923 } 924 925 static int vscsi_handle_srp_req(VSCSIState *s, vscsi_req *req) 926 { 927 union srp_iu *srp = &req->iu.srp; 928 int done = 1; 929 uint8_t opcode = srp->rsp.opcode; 930 931 switch (opcode) { 932 case SRP_LOGIN_REQ: 933 vscsi_process_login(s, req); 934 break; 935 case SRP_TSK_MGMT: 936 done = vscsi_process_tsk_mgmt(s, req); 937 break; 938 case SRP_CMD: 939 done = vscsi_queue_cmd(s, req); 940 break; 941 case SRP_LOGIN_RSP: 942 case SRP_I_LOGOUT: 943 case SRP_T_LOGOUT: 944 case SRP_RSP: 945 case SRP_CRED_REQ: 946 case SRP_CRED_RSP: 947 case SRP_AER_REQ: 948 case SRP_AER_RSP: 949 fprintf(stderr, "VSCSI: Unsupported opcode %02x\n", opcode); 950 break; 951 default: 952 fprintf(stderr, "VSCSI: Unknown type %02x\n", opcode); 953 } 954 955 return done; 956 } 957 958 static int vscsi_send_adapter_info(VSCSIState *s, vscsi_req *req) 959 { 960 struct viosrp_adapter_info *sinfo; 961 struct mad_adapter_info_data info; 962 int rc; 963 964 sinfo = &req->iu.mad.adapter_info; 965 966 #if 0 /* What for ? */ 967 rc = spapr_vio_dma_read(&s->vdev, be64_to_cpu(sinfo->buffer), 968 &info, be16_to_cpu(sinfo->common.length)); 969 if (rc) { 970 fprintf(stderr, "vscsi_send_adapter_info: DMA read failure !\n"); 971 } 972 #endif 973 memset(&info, 0, sizeof(info)); 974 strcpy(info.srp_version, SRP_VERSION); 975 memcpy(info.partition_name, "qemu", sizeof("qemu")); 976 info.partition_number = cpu_to_be32(0); 977 info.mad_version = cpu_to_be32(1); 978 info.os_type = cpu_to_be32(2); 979 info.port_max_txu[0] = cpu_to_be32(VSCSI_MAX_SECTORS << 9); 980 981 rc = spapr_vio_dma_write(&s->vdev, be64_to_cpu(sinfo->buffer), 982 &info, be16_to_cpu(sinfo->common.length)); 983 if (rc) { 984 fprintf(stderr, "vscsi_send_adapter_info: DMA write failure !\n"); 985 } 986 987 sinfo->common.status = rc ? cpu_to_be32(1) : 0; 988 989 return vscsi_send_iu(s, req, sizeof(*sinfo), VIOSRP_MAD_FORMAT); 990 } 991 992 static int vscsi_send_capabilities(VSCSIState *s, vscsi_req *req) 993 { 994 struct viosrp_capabilities *vcap; 995 struct capabilities cap = { }; 996 uint16_t len, req_len; 997 uint64_t buffer; 998 int rc; 999 1000 vcap = &req->iu.mad.capabilities; 1001 req_len = len = be16_to_cpu(vcap->common.length); 1002 buffer = be64_to_cpu(vcap->buffer); 1003 if (len > sizeof(cap)) { 1004 fprintf(stderr, "vscsi_send_capabilities: capabilities size mismatch !\n"); 1005 1006 /* 1007 * Just read and populate the structure that is known. 1008 * Zero rest of the structure. 1009 */ 1010 len = sizeof(cap); 1011 } 1012 rc = spapr_vio_dma_read(&s->vdev, buffer, &cap, len); 1013 if (rc) { 1014 fprintf(stderr, "vscsi_send_capabilities: DMA read failure !\n"); 1015 } 1016 1017 /* 1018 * Current implementation does not suppport any migration or 1019 * reservation capabilities. Construct the response telling the 1020 * guest not to use them. 1021 */ 1022 cap.flags = 0; 1023 cap.migration.ecl = 0; 1024 cap.reserve.type = 0; 1025 cap.migration.common.server_support = 0; 1026 cap.reserve.common.server_support = 0; 1027 1028 rc = spapr_vio_dma_write(&s->vdev, buffer, &cap, len); 1029 if (rc) { 1030 fprintf(stderr, "vscsi_send_capabilities: DMA write failure !\n"); 1031 } 1032 if (req_len > len) { 1033 /* 1034 * Being paranoid and lets not worry about the error code 1035 * here. Actual write of the cap is done above. 1036 */ 1037 spapr_vio_dma_set(&s->vdev, (buffer + len), 0, (req_len - len)); 1038 } 1039 vcap->common.status = rc ? cpu_to_be32(1) : 0; 1040 return vscsi_send_iu(s, req, sizeof(*vcap), VIOSRP_MAD_FORMAT); 1041 } 1042 1043 static int vscsi_handle_mad_req(VSCSIState *s, vscsi_req *req) 1044 { 1045 union mad_iu *mad = &req->iu.mad; 1046 bool request_handled = false; 1047 uint64_t retlen = 0; 1048 1049 switch (be32_to_cpu(mad->empty_iu.common.type)) { 1050 case VIOSRP_EMPTY_IU_TYPE: 1051 fprintf(stderr, "Unsupported EMPTY MAD IU\n"); 1052 retlen = sizeof(mad->empty_iu); 1053 break; 1054 case VIOSRP_ERROR_LOG_TYPE: 1055 fprintf(stderr, "Unsupported ERROR LOG MAD IU\n"); 1056 retlen = sizeof(mad->error_log); 1057 break; 1058 case VIOSRP_ADAPTER_INFO_TYPE: 1059 vscsi_send_adapter_info(s, req); 1060 request_handled = true; 1061 break; 1062 case VIOSRP_HOST_CONFIG_TYPE: 1063 retlen = sizeof(mad->host_config); 1064 break; 1065 case VIOSRP_CAPABILITIES_TYPE: 1066 vscsi_send_capabilities(s, req); 1067 request_handled = true; 1068 break; 1069 default: 1070 fprintf(stderr, "VSCSI: Unknown MAD type %02x\n", 1071 be32_to_cpu(mad->empty_iu.common.type)); 1072 /* 1073 * PAPR+ says that "The length field is set to the length 1074 * of the data structure(s) used in the command". 1075 * As we did not recognize the request type, put zero there. 1076 */ 1077 retlen = 0; 1078 } 1079 1080 if (!request_handled) { 1081 mad->empty_iu.common.status = cpu_to_be16(VIOSRP_MAD_NOT_SUPPORTED); 1082 vscsi_send_iu(s, req, retlen, VIOSRP_MAD_FORMAT); 1083 } 1084 1085 return 1; 1086 } 1087 1088 static void vscsi_got_payload(VSCSIState *s, vscsi_crq *crq) 1089 { 1090 vscsi_req *req; 1091 int done; 1092 1093 req = vscsi_get_req(s); 1094 if (req == NULL) { 1095 fprintf(stderr, "VSCSI: Failed to get a request !\n"); 1096 return; 1097 } 1098 1099 /* We only support a limited number of descriptors, we know 1100 * the ibmvscsi driver uses up to 10 max, so it should fit 1101 * in our 256 bytes IUs. If not we'll have to increase the size 1102 * of the structure. 1103 */ 1104 if (crq->s.IU_length > sizeof(union viosrp_iu)) { 1105 fprintf(stderr, "VSCSI: SRP IU too long (%d bytes) !\n", 1106 crq->s.IU_length); 1107 vscsi_put_req(req); 1108 return; 1109 } 1110 1111 /* XXX Handle failure differently ? */ 1112 if (spapr_vio_dma_read(&s->vdev, crq->s.IU_data_ptr, &req->iu, 1113 crq->s.IU_length)) { 1114 fprintf(stderr, "vscsi_got_payload: DMA read failure !\n"); 1115 vscsi_put_req(req); 1116 return; 1117 } 1118 memcpy(&req->crq, crq, sizeof(vscsi_crq)); 1119 1120 if (crq->s.format == VIOSRP_MAD_FORMAT) { 1121 done = vscsi_handle_mad_req(s, req); 1122 } else { 1123 done = vscsi_handle_srp_req(s, req); 1124 } 1125 1126 if (done) { 1127 vscsi_put_req(req); 1128 } 1129 } 1130 1131 1132 static int vscsi_do_crq(struct VIOsPAPRDevice *dev, uint8_t *crq_data) 1133 { 1134 VSCSIState *s = VIO_SPAPR_VSCSI_DEVICE(dev); 1135 vscsi_crq crq; 1136 1137 memcpy(crq.raw, crq_data, 16); 1138 crq.s.timeout = be16_to_cpu(crq.s.timeout); 1139 crq.s.IU_length = be16_to_cpu(crq.s.IU_length); 1140 crq.s.IU_data_ptr = be64_to_cpu(crq.s.IU_data_ptr); 1141 1142 DPRINTF("VSCSI: do_crq %02x %02x ...\n", crq.raw[0], crq.raw[1]); 1143 1144 switch (crq.s.valid) { 1145 case 0xc0: /* Init command/response */ 1146 1147 /* Respond to initialization request */ 1148 if (crq.s.format == 0x01) { 1149 memset(crq.raw, 0, 16); 1150 crq.s.valid = 0xc0; 1151 crq.s.format = 0x02; 1152 spapr_vio_send_crq(dev, crq.raw); 1153 } 1154 1155 /* Note that in hotplug cases, we might get a 0x02 1156 * as a result of us emitting the init request 1157 */ 1158 1159 break; 1160 case 0xff: /* Link event */ 1161 1162 /* Not handled for now */ 1163 1164 break; 1165 case 0x80: /* Payloads */ 1166 switch (crq.s.format) { 1167 case VIOSRP_SRP_FORMAT: /* AKA VSCSI request */ 1168 case VIOSRP_MAD_FORMAT: /* AKA VSCSI response */ 1169 vscsi_got_payload(s, &crq); 1170 break; 1171 case VIOSRP_OS400_FORMAT: 1172 case VIOSRP_AIX_FORMAT: 1173 case VIOSRP_LINUX_FORMAT: 1174 case VIOSRP_INLINE_FORMAT: 1175 fprintf(stderr, "vscsi_do_srq: Unsupported payload format %02x\n", 1176 crq.s.format); 1177 break; 1178 default: 1179 fprintf(stderr, "vscsi_do_srq: Unknown payload format %02x\n", 1180 crq.s.format); 1181 } 1182 break; 1183 default: 1184 fprintf(stderr, "vscsi_do_crq: unknown CRQ %02x %02x ...\n", 1185 crq.raw[0], crq.raw[1]); 1186 }; 1187 1188 return 0; 1189 } 1190 1191 static const struct SCSIBusInfo vscsi_scsi_info = { 1192 .tcq = true, 1193 .max_channel = 7, /* logical unit addressing format */ 1194 .max_target = 63, 1195 .max_lun = 31, 1196 1197 .transfer_data = vscsi_transfer_data, 1198 .complete = vscsi_command_complete, 1199 .cancel = vscsi_request_cancelled, 1200 .save_request = vscsi_save_request, 1201 .load_request = vscsi_load_request, 1202 }; 1203 1204 static void spapr_vscsi_reset(VIOsPAPRDevice *dev) 1205 { 1206 VSCSIState *s = VIO_SPAPR_VSCSI_DEVICE(dev); 1207 int i; 1208 1209 memset(s->reqs, 0, sizeof(s->reqs)); 1210 for (i = 0; i < VSCSI_REQ_LIMIT; i++) { 1211 s->reqs[i].qtag = i; 1212 } 1213 } 1214 1215 static void spapr_vscsi_realize(VIOsPAPRDevice *dev, Error **errp) 1216 { 1217 VSCSIState *s = VIO_SPAPR_VSCSI_DEVICE(dev); 1218 1219 dev->crq.SendFunc = vscsi_do_crq; 1220 1221 scsi_bus_new(&s->bus, sizeof(s->bus), DEVICE(dev), 1222 &vscsi_scsi_info, NULL); 1223 if (!dev->qdev.hotplugged) { 1224 scsi_bus_legacy_handle_cmdline(&s->bus, errp); 1225 } 1226 } 1227 1228 void spapr_vscsi_create(VIOsPAPRBus *bus) 1229 { 1230 DeviceState *dev; 1231 1232 dev = qdev_create(&bus->bus, "spapr-vscsi"); 1233 1234 qdev_init_nofail(dev); 1235 } 1236 1237 static int spapr_vscsi_devnode(VIOsPAPRDevice *dev, void *fdt, int node_off) 1238 { 1239 int ret; 1240 1241 ret = fdt_setprop_cell(fdt, node_off, "#address-cells", 2); 1242 if (ret < 0) { 1243 return ret; 1244 } 1245 1246 ret = fdt_setprop_cell(fdt, node_off, "#size-cells", 0); 1247 if (ret < 0) { 1248 return ret; 1249 } 1250 1251 return 0; 1252 } 1253 1254 static Property spapr_vscsi_properties[] = { 1255 DEFINE_SPAPR_PROPERTIES(VSCSIState, vdev), 1256 DEFINE_PROP_END_OF_LIST(), 1257 }; 1258 1259 static const VMStateDescription vmstate_spapr_vscsi = { 1260 .name = "spapr_vscsi", 1261 .version_id = 1, 1262 .minimum_version_id = 1, 1263 .fields = (VMStateField[]) { 1264 VMSTATE_SPAPR_VIO(vdev, VSCSIState), 1265 /* VSCSI state */ 1266 /* ???? */ 1267 1268 VMSTATE_END_OF_LIST() 1269 }, 1270 }; 1271 1272 static void spapr_vscsi_class_init(ObjectClass *klass, void *data) 1273 { 1274 DeviceClass *dc = DEVICE_CLASS(klass); 1275 VIOsPAPRDeviceClass *k = VIO_SPAPR_DEVICE_CLASS(klass); 1276 1277 k->realize = spapr_vscsi_realize; 1278 k->reset = spapr_vscsi_reset; 1279 k->devnode = spapr_vscsi_devnode; 1280 k->dt_name = "v-scsi"; 1281 k->dt_type = "vscsi"; 1282 k->dt_compatible = "IBM,v-scsi"; 1283 k->signal_mask = 0x00000001; 1284 set_bit(DEVICE_CATEGORY_STORAGE, dc->categories); 1285 dc->props = spapr_vscsi_properties; 1286 k->rtce_window_size = 0x10000000; 1287 dc->vmsd = &vmstate_spapr_vscsi; 1288 } 1289 1290 static const TypeInfo spapr_vscsi_info = { 1291 .name = TYPE_VIO_SPAPR_VSCSI_DEVICE, 1292 .parent = TYPE_VIO_SPAPR_DEVICE, 1293 .instance_size = sizeof(VSCSIState), 1294 .class_init = spapr_vscsi_class_init, 1295 }; 1296 1297 static void spapr_vscsi_register_types(void) 1298 { 1299 type_register_static(&spapr_vscsi_info); 1300 } 1301 1302 type_init(spapr_vscsi_register_types) 1303