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 35 #include "qemu/osdep.h" 36 #include "qemu/module.h" 37 #include "cpu.h" 38 #include "hw/scsi/scsi.h" 39 #include "migration/vmstate.h" 40 #include "scsi/constants.h" 41 #include "srp.h" 42 #include "hw/ppc/spapr.h" 43 #include "hw/ppc/spapr_vio.h" 44 #include "hw/qdev-properties.h" 45 #include "viosrp.h" 46 #include "trace.h" 47 48 #include <libfdt.h> 49 50 /* 51 * Virtual SCSI device 52 */ 53 54 /* Random numbers */ 55 #define VSCSI_MAX_SECTORS 4096 56 #define VSCSI_REQ_LIMIT 24 57 58 /* Maximum size of a IU payload */ 59 #define SRP_MAX_IU_DATA_LEN (SRP_MAX_IU_LEN - sizeof(union srp_iu)) 60 #define SRP_RSP_SENSE_DATA_LEN 18 61 62 #define SRP_REPORT_LUNS_WLUN 0xc10100000000000ULL 63 64 typedef union vscsi_crq { 65 struct viosrp_crq s; 66 uint8_t raw[16]; 67 } vscsi_crq; 68 69 typedef struct vscsi_req { 70 vscsi_crq crq; 71 uint8_t viosrp_iu_buf[SRP_MAX_IU_LEN]; 72 73 /* SCSI request tracking */ 74 SCSIRequest *sreq; 75 uint32_t qtag; /* qemu tag != srp tag */ 76 bool active; 77 bool writing; 78 bool dma_error; 79 uint32_t data_len; 80 uint32_t senselen; 81 uint8_t sense[SCSI_SENSE_BUF_SIZE]; 82 83 /* RDMA related bits */ 84 uint8_t dma_fmt; 85 uint16_t local_desc; 86 uint16_t total_desc; 87 uint16_t cdb_offset; 88 uint16_t cur_desc_num; 89 uint16_t cur_desc_offset; 90 } vscsi_req; 91 92 #define TYPE_VIO_SPAPR_VSCSI_DEVICE "spapr-vscsi" 93 #define VIO_SPAPR_VSCSI_DEVICE(obj) \ 94 OBJECT_CHECK(VSCSIState, (obj), TYPE_VIO_SPAPR_VSCSI_DEVICE) 95 96 typedef struct { 97 SpaprVioDevice vdev; 98 SCSIBus bus; 99 vscsi_req reqs[VSCSI_REQ_LIMIT]; 100 } VSCSIState; 101 102 static union viosrp_iu *req_iu(vscsi_req *req) 103 { 104 return (union viosrp_iu *)req->viosrp_iu_buf; 105 } 106 107 static struct vscsi_req *vscsi_get_req(VSCSIState *s) 108 { 109 vscsi_req *req; 110 int i; 111 112 for (i = 0; i < VSCSI_REQ_LIMIT; i++) { 113 req = &s->reqs[i]; 114 if (!req->active) { 115 memset(req, 0, sizeof(*req)); 116 req->qtag = i; 117 req->active = 1; 118 return req; 119 } 120 } 121 return NULL; 122 } 123 124 static struct vscsi_req *vscsi_find_req(VSCSIState *s, uint64_t srp_tag) 125 { 126 vscsi_req *req; 127 int i; 128 129 for (i = 0; i < VSCSI_REQ_LIMIT; i++) { 130 req = &s->reqs[i]; 131 if (req_iu(req)->srp.cmd.tag == srp_tag) { 132 return req; 133 } 134 } 135 return NULL; 136 } 137 138 static void vscsi_put_req(vscsi_req *req) 139 { 140 if (req->sreq != NULL) { 141 scsi_req_unref(req->sreq); 142 } 143 req->sreq = NULL; 144 req->active = 0; 145 } 146 147 static SCSIDevice *vscsi_device_find(SCSIBus *bus, uint64_t srp_lun, int *lun) 148 { 149 int channel = 0, id = 0; 150 151 retry: 152 switch (srp_lun >> 62) { 153 case 0: 154 if ((srp_lun >> 56) != 0) { 155 channel = (srp_lun >> 56) & 0x3f; 156 id = (srp_lun >> 48) & 0xff; 157 srp_lun <<= 16; 158 goto retry; 159 } 160 *lun = (srp_lun >> 48) & 0xff; 161 break; 162 163 case 1: 164 *lun = (srp_lun >> 48) & 0x3fff; 165 break; 166 case 2: 167 channel = (srp_lun >> 53) & 0x7; 168 id = (srp_lun >> 56) & 0x3f; 169 *lun = (srp_lun >> 48) & 0x1f; 170 break; 171 case 3: 172 *lun = -1; 173 return NULL; 174 default: 175 abort(); 176 } 177 178 return scsi_device_find(bus, channel, id, *lun); 179 } 180 181 static int vscsi_send_iu(VSCSIState *s, vscsi_req *req, 182 uint64_t length, uint8_t format) 183 { 184 long rc, rc1; 185 186 assert(length <= SRP_MAX_IU_LEN); 187 188 /* First copy the SRP */ 189 rc = spapr_vio_dma_write(&s->vdev, req->crq.s.IU_data_ptr, 190 &req->viosrp_iu_buf, length); 191 if (rc) { 192 fprintf(stderr, "vscsi_send_iu: DMA write failure !\n"); 193 } 194 195 req->crq.s.valid = 0x80; 196 req->crq.s.format = format; 197 req->crq.s.reserved = 0x00; 198 req->crq.s.timeout = cpu_to_be16(0x0000); 199 req->crq.s.IU_length = cpu_to_be16(length); 200 req->crq.s.IU_data_ptr = req_iu(req)->srp.rsp.tag; /* right byte order */ 201 202 if (rc == 0) { 203 req->crq.s.status = VIOSRP_OK; 204 } else { 205 req->crq.s.status = VIOSRP_ADAPTER_FAIL; 206 } 207 208 rc1 = spapr_vio_send_crq(&s->vdev, req->crq.raw); 209 if (rc1) { 210 fprintf(stderr, "vscsi_send_iu: Error sending response\n"); 211 return rc1; 212 } 213 214 return rc; 215 } 216 217 static void vscsi_makeup_sense(VSCSIState *s, vscsi_req *req, 218 uint8_t key, uint8_t asc, uint8_t ascq) 219 { 220 req->senselen = SRP_RSP_SENSE_DATA_LEN; 221 222 /* Valid bit and 'current errors' */ 223 req->sense[0] = (0x1 << 7 | 0x70); 224 /* Sense key */ 225 req->sense[2] = key; 226 /* Additional sense length */ 227 req->sense[7] = 0xa; /* 10 bytes */ 228 /* Additional sense code */ 229 req->sense[12] = asc; 230 req->sense[13] = ascq; 231 } 232 233 static int vscsi_send_rsp(VSCSIState *s, vscsi_req *req, 234 uint8_t status, int32_t res_in, int32_t res_out) 235 { 236 union viosrp_iu *iu = req_iu(req); 237 uint64_t tag = iu->srp.rsp.tag; 238 int total_len = sizeof(iu->srp.rsp); 239 uint8_t sol_not = iu->srp.cmd.sol_not; 240 241 trace_spapr_vscsi_send_rsp(status, res_in, res_out); 242 243 memset(iu, 0, sizeof(struct srp_rsp)); 244 iu->srp.rsp.opcode = SRP_RSP; 245 iu->srp.rsp.req_lim_delta = cpu_to_be32(1); 246 iu->srp.rsp.tag = tag; 247 248 /* Handle residuals */ 249 if (res_in < 0) { 250 iu->srp.rsp.flags |= SRP_RSP_FLAG_DIUNDER; 251 res_in = -res_in; 252 } else if (res_in) { 253 iu->srp.rsp.flags |= SRP_RSP_FLAG_DIOVER; 254 } 255 if (res_out < 0) { 256 iu->srp.rsp.flags |= SRP_RSP_FLAG_DOUNDER; 257 res_out = -res_out; 258 } else if (res_out) { 259 iu->srp.rsp.flags |= SRP_RSP_FLAG_DOOVER; 260 } 261 iu->srp.rsp.data_in_res_cnt = cpu_to_be32(res_in); 262 iu->srp.rsp.data_out_res_cnt = cpu_to_be32(res_out); 263 264 /* We don't do response data */ 265 /* iu->srp.rsp.flags &= ~SRP_RSP_FLAG_RSPVALID; */ 266 iu->srp.rsp.resp_data_len = cpu_to_be32(0); 267 268 /* Handle success vs. failure */ 269 iu->srp.rsp.status = status; 270 if (status) { 271 iu->srp.rsp.sol_not = (sol_not & 0x04) >> 2; 272 if (req->senselen) { 273 int sense_data_len = MIN(req->senselen, SRP_MAX_IU_DATA_LEN); 274 275 iu->srp.rsp.flags |= SRP_RSP_FLAG_SNSVALID; 276 iu->srp.rsp.sense_data_len = cpu_to_be32(sense_data_len); 277 memcpy(iu->srp.rsp.data, req->sense, sense_data_len); 278 total_len += sense_data_len; 279 } 280 } else { 281 iu->srp.rsp.sol_not = (sol_not & 0x02) >> 1; 282 } 283 284 vscsi_send_iu(s, req, total_len, VIOSRP_SRP_FORMAT); 285 return 0; 286 } 287 288 static inline struct srp_direct_buf vscsi_swap_desc(struct srp_direct_buf desc) 289 { 290 desc.va = be64_to_cpu(desc.va); 291 desc.len = be32_to_cpu(desc.len); 292 return desc; 293 } 294 295 static int vscsi_fetch_desc(VSCSIState *s, struct vscsi_req *req, 296 unsigned n, unsigned buf_offset, 297 struct srp_direct_buf *ret) 298 { 299 struct srp_cmd *cmd = &req_iu(req)->srp.cmd; 300 301 switch (req->dma_fmt) { 302 case SRP_NO_DATA_DESC: { 303 trace_spapr_vscsi_fetch_desc_no_data(); 304 return 0; 305 } 306 case SRP_DATA_DESC_DIRECT: { 307 memcpy(ret, cmd->add_data + req->cdb_offset, sizeof(*ret)); 308 assert(req->cur_desc_num == 0); 309 trace_spapr_vscsi_fetch_desc_direct(); 310 break; 311 } 312 case SRP_DATA_DESC_INDIRECT: { 313 struct srp_indirect_buf *tmp = (struct srp_indirect_buf *) 314 (cmd->add_data + req->cdb_offset); 315 if (n < req->local_desc) { 316 *ret = tmp->desc_list[n]; 317 trace_spapr_vscsi_fetch_desc_indirect(req->qtag, n, 318 req->local_desc); 319 } else if (n < req->total_desc) { 320 int rc; 321 struct srp_direct_buf tbl_desc = vscsi_swap_desc(tmp->table_desc); 322 unsigned desc_offset = n * sizeof(struct srp_direct_buf); 323 324 if (desc_offset >= tbl_desc.len) { 325 trace_spapr_vscsi_fetch_desc_out_of_range(n, desc_offset); 326 return -1; 327 } 328 rc = spapr_vio_dma_read(&s->vdev, tbl_desc.va + desc_offset, 329 ret, sizeof(struct srp_direct_buf)); 330 if (rc) { 331 trace_spapr_vscsi_fetch_desc_dma_read_error(rc); 332 return -1; 333 } 334 trace_spapr_vscsi_fetch_desc_indirect_seg_ext(req->qtag, n, 335 req->total_desc, 336 tbl_desc.va, 337 tbl_desc.len); 338 } else { 339 trace_spapr_vscsi_fetch_desc_out_of_desc(); 340 return 0; 341 } 342 break; 343 } 344 default: 345 fprintf(stderr, "VSCSI: Unknown format %x\n", req->dma_fmt); 346 return -1; 347 } 348 349 *ret = vscsi_swap_desc(*ret); 350 if (buf_offset > ret->len) { 351 trace_spapr_vscsi_fetch_desc_out_of_desc_boundary(buf_offset, 352 req->cur_desc_num, 353 ret->len); 354 return -1; 355 } 356 ret->va += buf_offset; 357 ret->len -= buf_offset; 358 359 trace_spapr_vscsi_fetch_desc_done(req->cur_desc_num, req->cur_desc_offset, 360 ret->va, ret->len); 361 362 return ret->len ? 1 : 0; 363 } 364 365 static int vscsi_srp_direct_data(VSCSIState *s, vscsi_req *req, 366 uint8_t *buf, uint32_t len) 367 { 368 struct srp_direct_buf md; 369 uint32_t llen; 370 int rc = 0; 371 372 rc = vscsi_fetch_desc(s, req, req->cur_desc_num, req->cur_desc_offset, &md); 373 if (rc < 0) { 374 return -1; 375 } else if (rc == 0) { 376 return 0; 377 } 378 379 llen = MIN(len, md.len); 380 if (llen) { 381 if (req->writing) { /* writing = to device = reading from memory */ 382 rc = spapr_vio_dma_read(&s->vdev, md.va, buf, llen); 383 } else { 384 rc = spapr_vio_dma_write(&s->vdev, md.va, buf, llen); 385 } 386 } 387 388 if (rc) { 389 return -1; 390 } 391 req->cur_desc_offset += llen; 392 393 return llen; 394 } 395 396 static int vscsi_srp_indirect_data(VSCSIState *s, vscsi_req *req, 397 uint8_t *buf, uint32_t len) 398 { 399 struct srp_direct_buf md; 400 int rc = 0; 401 uint32_t llen, total = 0; 402 403 trace_spapr_vscsi_srp_indirect_data(len); 404 405 /* While we have data ... */ 406 while (len) { 407 rc = vscsi_fetch_desc(s, req, req->cur_desc_num, req->cur_desc_offset, &md); 408 if (rc < 0) { 409 return -1; 410 } else if (rc == 0) { 411 break; 412 } 413 414 /* Perform transfer */ 415 llen = MIN(len, md.len); 416 if (req->writing) { /* writing = to device = reading from memory */ 417 rc = spapr_vio_dma_read(&s->vdev, md.va, buf, llen); 418 } else { 419 rc = spapr_vio_dma_write(&s->vdev, md.va, buf, llen); 420 } 421 if (rc) { 422 trace_spapr_vscsi_srp_indirect_data_rw(req->writing, rc); 423 break; 424 } 425 trace_spapr_vscsi_srp_indirect_data_buf(buf[0], buf[1], buf[2], buf[3]); 426 427 len -= llen; 428 buf += llen; 429 430 total += llen; 431 432 /* Update current position in the current descriptor */ 433 req->cur_desc_offset += llen; 434 if (md.len == llen) { 435 /* Go to the next descriptor if the current one finished */ 436 ++req->cur_desc_num; 437 req->cur_desc_offset = 0; 438 } 439 } 440 441 return rc ? -1 : total; 442 } 443 444 static int vscsi_srp_transfer_data(VSCSIState *s, vscsi_req *req, 445 int writing, uint8_t *buf, uint32_t len) 446 { 447 int err = 0; 448 449 switch (req->dma_fmt) { 450 case SRP_NO_DATA_DESC: 451 trace_spapr_vscsi_srp_transfer_data(len); 452 break; 453 case SRP_DATA_DESC_DIRECT: 454 err = vscsi_srp_direct_data(s, req, buf, len); 455 break; 456 case SRP_DATA_DESC_INDIRECT: 457 err = vscsi_srp_indirect_data(s, req, buf, len); 458 break; 459 } 460 return err; 461 } 462 463 /* Bits from linux srp */ 464 static int data_out_desc_size(struct srp_cmd *cmd) 465 { 466 int size = 0; 467 uint8_t fmt = cmd->buf_fmt >> 4; 468 469 switch (fmt) { 470 case SRP_NO_DATA_DESC: 471 break; 472 case SRP_DATA_DESC_DIRECT: 473 size = sizeof(struct srp_direct_buf); 474 break; 475 case SRP_DATA_DESC_INDIRECT: 476 size = sizeof(struct srp_indirect_buf) + 477 sizeof(struct srp_direct_buf)*cmd->data_out_desc_cnt; 478 break; 479 default: 480 break; 481 } 482 return size; 483 } 484 485 static int vscsi_preprocess_desc(vscsi_req *req) 486 { 487 struct srp_cmd *cmd = &req_iu(req)->srp.cmd; 488 489 req->cdb_offset = cmd->add_cdb_len & ~3; 490 491 if (req->writing) { 492 req->dma_fmt = cmd->buf_fmt >> 4; 493 } else { 494 req->cdb_offset += data_out_desc_size(cmd); 495 req->dma_fmt = cmd->buf_fmt & ((1U << 4) - 1); 496 } 497 498 switch (req->dma_fmt) { 499 case SRP_NO_DATA_DESC: 500 break; 501 case SRP_DATA_DESC_DIRECT: 502 req->total_desc = req->local_desc = 1; 503 break; 504 case SRP_DATA_DESC_INDIRECT: { 505 struct srp_indirect_buf *ind_tmp = (struct srp_indirect_buf *) 506 (cmd->add_data + req->cdb_offset); 507 508 req->total_desc = be32_to_cpu(ind_tmp->table_desc.len) / 509 sizeof(struct srp_direct_buf); 510 req->local_desc = req->writing ? cmd->data_out_desc_cnt : 511 cmd->data_in_desc_cnt; 512 break; 513 } 514 default: 515 fprintf(stderr, 516 "vscsi_preprocess_desc: Unknown format %x\n", req->dma_fmt); 517 return -1; 518 } 519 520 return 0; 521 } 522 523 /* Callback to indicate that the SCSI layer has completed a transfer. */ 524 static void vscsi_transfer_data(SCSIRequest *sreq, uint32_t len) 525 { 526 VSCSIState *s = VIO_SPAPR_VSCSI_DEVICE(sreq->bus->qbus.parent); 527 vscsi_req *req = sreq->hba_private; 528 uint8_t *buf; 529 int rc = 0; 530 531 trace_spapr_vscsi_transfer_data(sreq->tag, len, req); 532 if (req == NULL) { 533 fprintf(stderr, "VSCSI: Can't find request for tag 0x%x\n", sreq->tag); 534 return; 535 } 536 537 if (len) { 538 buf = scsi_req_get_buf(sreq); 539 rc = vscsi_srp_transfer_data(s, req, req->writing, buf, len); 540 } 541 if (rc < 0) { 542 fprintf(stderr, "VSCSI: RDMA error rc=%d!\n", rc); 543 req->dma_error = true; 544 scsi_req_cancel(req->sreq); 545 return; 546 } 547 548 /* Start next chunk */ 549 req->data_len -= rc; 550 scsi_req_continue(sreq); 551 } 552 553 /* Callback to indicate that the SCSI layer has completed a transfer. */ 554 static void vscsi_command_complete(SCSIRequest *sreq, uint32_t status, size_t resid) 555 { 556 VSCSIState *s = VIO_SPAPR_VSCSI_DEVICE(sreq->bus->qbus.parent); 557 vscsi_req *req = sreq->hba_private; 558 int32_t res_in = 0, res_out = 0; 559 560 trace_spapr_vscsi_command_complete(sreq->tag, status, req); 561 if (req == NULL) { 562 fprintf(stderr, "VSCSI: Can't find request for tag 0x%x\n", sreq->tag); 563 return; 564 } 565 566 if (status == CHECK_CONDITION) { 567 req->senselen = scsi_req_get_sense(req->sreq, req->sense, 568 sizeof(req->sense)); 569 trace_spapr_vscsi_command_complete_sense_data1(req->senselen, 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 trace_spapr_vscsi_command_complete_sense_data2( 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 trace_spapr_vscsi_command_complete_status(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(viosrp_iu_buf, 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 trace_spapr_vscsi_save_request(req->qtag, req->cur_desc_num, 637 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 trace_spapr_vscsi_load_request(req->qtag, req->cur_desc_num, 662 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(req); 670 struct srp_login_rsp *rsp = &iu->srp.login_rsp; 671 uint64_t tag = iu->srp.rsp.tag; 672 673 trace_spapr_vscsi_process_login(); 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(SRP_MAX_IU_LEN); 686 rsp->max_ti_iu_len = cpu_to_be32(SRP_MAX_IU_LEN); 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(req)->srp.cmd.cdb; 696 uint8_t resp_data[36]; 697 int rc, len, alen; 698 699 /* We don't 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(req)->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 trace_spapr_vscsi_queue_cmd_no_drive(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 trace_spapr_vscsi_queue_cmd(req->qtag, srp->cmd.cdb[0], 809 scsi_command_name(srp->cmd.cdb[0]), lun, n); 810 811 if (n) { 812 /* Transfer direction must be set before preprocessing the 813 * descriptors 814 */ 815 req->writing = (n < 1); 816 817 /* Preprocess RDMA descriptors */ 818 vscsi_preprocess_desc(req); 819 820 /* Get transfer direction and initiate transfer */ 821 if (n > 0) { 822 req->data_len = n; 823 } else if (n < 0) { 824 req->data_len = -n; 825 } 826 scsi_req_continue(req->sreq); 827 } 828 /* Don't touch req here, it may have been recycled already */ 829 830 return 0; 831 } 832 833 static int vscsi_process_tsk_mgmt(VSCSIState *s, vscsi_req *req) 834 { 835 union viosrp_iu *iu = req_iu(req); 836 vscsi_req *tmpreq; 837 int i, lun = 0, resp = SRP_TSK_MGMT_COMPLETE; 838 SCSIDevice *d; 839 uint64_t tag = iu->srp.rsp.tag; 840 uint8_t sol_not = iu->srp.cmd.sol_not; 841 842 trace_spapr_vscsi_process_tsk_mgmt(iu->srp.tsk_mgmt.tsk_mgmt_func); 843 d = vscsi_device_find(&s->bus, 844 be64_to_cpu(req_iu(req)->srp.tsk_mgmt.lun), &lun); 845 if (!d) { 846 resp = SRP_TSK_MGMT_FIELDS_INVALID; 847 } else { 848 switch (iu->srp.tsk_mgmt.tsk_mgmt_func) { 849 case SRP_TSK_ABORT_TASK: 850 if (d->lun != lun) { 851 resp = SRP_TSK_MGMT_FIELDS_INVALID; 852 break; 853 } 854 855 tmpreq = vscsi_find_req(s, req_iu(req)->srp.tsk_mgmt.task_tag); 856 if (tmpreq && tmpreq->sreq) { 857 assert(tmpreq->sreq->hba_private); 858 scsi_req_cancel(tmpreq->sreq); 859 } 860 break; 861 862 case SRP_TSK_LUN_RESET: 863 if (d->lun != lun) { 864 resp = SRP_TSK_MGMT_FIELDS_INVALID; 865 break; 866 } 867 868 qdev_reset_all(&d->qdev); 869 break; 870 871 case SRP_TSK_ABORT_TASK_SET: 872 case SRP_TSK_CLEAR_TASK_SET: 873 if (d->lun != lun) { 874 resp = SRP_TSK_MGMT_FIELDS_INVALID; 875 break; 876 } 877 878 for (i = 0; i < VSCSI_REQ_LIMIT; i++) { 879 tmpreq = &s->reqs[i]; 880 if (req_iu(tmpreq)->srp.cmd.lun 881 != req_iu(req)->srp.tsk_mgmt.lun) { 882 continue; 883 } 884 if (!tmpreq->active || !tmpreq->sreq) { 885 continue; 886 } 887 assert(tmpreq->sreq->hba_private); 888 scsi_req_cancel(tmpreq->sreq); 889 } 890 break; 891 892 case SRP_TSK_CLEAR_ACA: 893 resp = SRP_TSK_MGMT_NOT_SUPPORTED; 894 break; 895 896 default: 897 resp = SRP_TSK_MGMT_FIELDS_INVALID; 898 break; 899 } 900 } 901 902 /* Compose the response here as */ 903 QEMU_BUILD_BUG_ON(SRP_MAX_IU_DATA_LEN < 4); 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(req)->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(req)->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(req)->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(req)->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 > SRP_MAX_IU_LEN) { 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->viosrp_iu_buf, 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 SpaprVioDevice *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 trace_spapr_vscsi_do_crq(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(SpaprVioDevice *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(SpaprVioDevice *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 } 1223 1224 void spapr_vscsi_create(SpaprVioBus *bus) 1225 { 1226 DeviceState *dev; 1227 1228 dev = qdev_create(&bus->bus, "spapr-vscsi"); 1229 1230 qdev_init_nofail(dev); 1231 scsi_bus_legacy_handle_cmdline(&VIO_SPAPR_VSCSI_DEVICE(dev)->bus); 1232 } 1233 1234 static int spapr_vscsi_devnode(SpaprVioDevice *dev, void *fdt, int node_off) 1235 { 1236 int ret; 1237 1238 ret = fdt_setprop_cell(fdt, node_off, "#address-cells", 2); 1239 if (ret < 0) { 1240 return ret; 1241 } 1242 1243 ret = fdt_setprop_cell(fdt, node_off, "#size-cells", 0); 1244 if (ret < 0) { 1245 return ret; 1246 } 1247 1248 return 0; 1249 } 1250 1251 static Property spapr_vscsi_properties[] = { 1252 DEFINE_SPAPR_PROPERTIES(VSCSIState, vdev), 1253 DEFINE_PROP_END_OF_LIST(), 1254 }; 1255 1256 static const VMStateDescription vmstate_spapr_vscsi = { 1257 .name = "spapr_vscsi", 1258 .version_id = 1, 1259 .minimum_version_id = 1, 1260 .fields = (VMStateField[]) { 1261 VMSTATE_SPAPR_VIO(vdev, VSCSIState), 1262 /* VSCSI state */ 1263 /* ???? */ 1264 1265 VMSTATE_END_OF_LIST() 1266 }, 1267 }; 1268 1269 static void spapr_vscsi_class_init(ObjectClass *klass, void *data) 1270 { 1271 DeviceClass *dc = DEVICE_CLASS(klass); 1272 SpaprVioDeviceClass *k = VIO_SPAPR_DEVICE_CLASS(klass); 1273 1274 k->realize = spapr_vscsi_realize; 1275 k->reset = spapr_vscsi_reset; 1276 k->devnode = spapr_vscsi_devnode; 1277 k->dt_name = "v-scsi"; 1278 k->dt_type = "vscsi"; 1279 k->dt_compatible = "IBM,v-scsi"; 1280 k->signal_mask = 0x00000001; 1281 set_bit(DEVICE_CATEGORY_STORAGE, dc->categories); 1282 device_class_set_props(dc, spapr_vscsi_properties); 1283 k->rtce_window_size = 0x10000000; 1284 dc->vmsd = &vmstate_spapr_vscsi; 1285 } 1286 1287 static const TypeInfo spapr_vscsi_info = { 1288 .name = TYPE_VIO_SPAPR_VSCSI_DEVICE, 1289 .parent = TYPE_VIO_SPAPR_DEVICE, 1290 .instance_size = sizeof(VSCSIState), 1291 .class_init = spapr_vscsi_class_init, 1292 }; 1293 1294 static void spapr_vscsi_register_types(void) 1295 { 1296 type_register_static(&spapr_vscsi_info); 1297 } 1298 1299 type_init(spapr_vscsi_register_types) 1300