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