1 /* 2 * QEMU VMWARE PVSCSI paravirtual SCSI bus 3 * 4 * Copyright (c) 2012 Ravello Systems LTD (http://ravellosystems.com) 5 * 6 * Developed by Daynix Computing LTD (http://www.daynix.com) 7 * 8 * Based on implementation by Paolo Bonzini 9 * http://lists.gnu.org/archive/html/qemu-devel/2011-08/msg00729.html 10 * 11 * Authors: 12 * Paolo Bonzini <pbonzini@redhat.com> 13 * Dmitry Fleytman <dmitry@daynix.com> 14 * Yan Vugenfirer <yan@daynix.com> 15 * 16 * This work is licensed under the terms of the GNU GPL, version 2. 17 * See the COPYING file in the top-level directory. 18 * 19 * NOTE about MSI-X: 20 * MSI-X support has been removed for the moment because it leads Windows OS 21 * to crash on startup. The crash happens because Windows driver requires 22 * MSI-X shared memory to be part of the same BAR used for rings state 23 * registers, etc. This is not supported by QEMU infrastructure so separate 24 * BAR created from MSI-X purposes. Windows driver fails to deal with 2 BARs. 25 * 26 */ 27 28 #include "qemu/osdep.h" 29 #include "qapi/error.h" 30 #include "qemu/main-loop.h" 31 #include "qemu/module.h" 32 #include "hw/scsi/scsi.h" 33 #include "migration/vmstate.h" 34 #include "scsi/constants.h" 35 #include "hw/pci/msi.h" 36 #include "hw/qdev-properties.h" 37 #include "vmw_pvscsi.h" 38 #include "trace.h" 39 40 41 #define PVSCSI_USE_64BIT (true) 42 #define PVSCSI_PER_VECTOR_MASK (false) 43 44 #define PVSCSI_MAX_DEVS (64) 45 #define PVSCSI_MSIX_NUM_VECTORS (1) 46 47 #define PVSCSI_MAX_SG_ELEM 2048 48 49 #define PVSCSI_MAX_CMD_DATA_WORDS \ 50 (sizeof(PVSCSICmdDescSetupRings)/sizeof(uint32_t)) 51 52 #define RS_GET_FIELD(m, field) \ 53 (ldl_le_pci_dma(&container_of(m, PVSCSIState, rings)->parent_obj, \ 54 (m)->rs_pa + offsetof(struct PVSCSIRingsState, field))) 55 #define RS_SET_FIELD(m, field, val) \ 56 (stl_le_pci_dma(&container_of(m, PVSCSIState, rings)->parent_obj, \ 57 (m)->rs_pa + offsetof(struct PVSCSIRingsState, field), val)) 58 59 typedef struct PVSCSIClass { 60 PCIDeviceClass parent_class; 61 DeviceRealize parent_dc_realize; 62 } PVSCSIClass; 63 64 #define TYPE_PVSCSI "pvscsi" 65 #define PVSCSI(obj) OBJECT_CHECK(PVSCSIState, (obj), TYPE_PVSCSI) 66 67 #define PVSCSI_DEVICE_CLASS(klass) \ 68 OBJECT_CLASS_CHECK(PVSCSIClass, (klass), TYPE_PVSCSI) 69 #define PVSCSI_DEVICE_GET_CLASS(obj) \ 70 OBJECT_GET_CLASS(PVSCSIClass, (obj), TYPE_PVSCSI) 71 72 /* Compatibility flags for migration */ 73 #define PVSCSI_COMPAT_OLD_PCI_CONFIGURATION_BIT 0 74 #define PVSCSI_COMPAT_OLD_PCI_CONFIGURATION \ 75 (1 << PVSCSI_COMPAT_OLD_PCI_CONFIGURATION_BIT) 76 #define PVSCSI_COMPAT_DISABLE_PCIE_BIT 1 77 #define PVSCSI_COMPAT_DISABLE_PCIE \ 78 (1 << PVSCSI_COMPAT_DISABLE_PCIE_BIT) 79 80 #define PVSCSI_USE_OLD_PCI_CONFIGURATION(s) \ 81 ((s)->compat_flags & PVSCSI_COMPAT_OLD_PCI_CONFIGURATION) 82 #define PVSCSI_MSI_OFFSET(s) \ 83 (PVSCSI_USE_OLD_PCI_CONFIGURATION(s) ? 0x50 : 0x7c) 84 #define PVSCSI_EXP_EP_OFFSET (0x40) 85 86 typedef struct PVSCSIRingInfo { 87 uint64_t rs_pa; 88 uint32_t txr_len_mask; 89 uint32_t rxr_len_mask; 90 uint32_t msg_len_mask; 91 uint64_t req_ring_pages_pa[PVSCSI_SETUP_RINGS_MAX_NUM_PAGES]; 92 uint64_t cmp_ring_pages_pa[PVSCSI_SETUP_RINGS_MAX_NUM_PAGES]; 93 uint64_t msg_ring_pages_pa[PVSCSI_SETUP_MSG_RING_MAX_NUM_PAGES]; 94 uint64_t consumed_ptr; 95 uint64_t filled_cmp_ptr; 96 uint64_t filled_msg_ptr; 97 } PVSCSIRingInfo; 98 99 typedef struct PVSCSISGState { 100 hwaddr elemAddr; 101 hwaddr dataAddr; 102 uint32_t resid; 103 } PVSCSISGState; 104 105 typedef QTAILQ_HEAD(, PVSCSIRequest) PVSCSIRequestList; 106 107 typedef struct { 108 PCIDevice parent_obj; 109 MemoryRegion io_space; 110 SCSIBus bus; 111 QEMUBH *completion_worker; 112 PVSCSIRequestList pending_queue; 113 PVSCSIRequestList completion_queue; 114 115 uint64_t reg_interrupt_status; /* Interrupt status register value */ 116 uint64_t reg_interrupt_enabled; /* Interrupt mask register value */ 117 uint64_t reg_command_status; /* Command status register value */ 118 119 /* Command data adoption mechanism */ 120 uint64_t curr_cmd; /* Last command arrived */ 121 uint32_t curr_cmd_data_cntr; /* Amount of data for last command */ 122 123 /* Collector for current command data */ 124 uint32_t curr_cmd_data[PVSCSI_MAX_CMD_DATA_WORDS]; 125 126 uint8_t rings_info_valid; /* Whether data rings initialized */ 127 uint8_t msg_ring_info_valid; /* Whether message ring initialized */ 128 uint8_t use_msg; /* Whether to use message ring */ 129 130 uint8_t msi_used; /* For migration compatibility */ 131 PVSCSIRingInfo rings; /* Data transfer rings manager */ 132 uint32_t resetting; /* Reset in progress */ 133 134 uint32_t compat_flags; 135 } PVSCSIState; 136 137 typedef struct PVSCSIRequest { 138 SCSIRequest *sreq; 139 PVSCSIState *dev; 140 uint8_t sense_key; 141 uint8_t completed; 142 int lun; 143 QEMUSGList sgl; 144 PVSCSISGState sg; 145 struct PVSCSIRingReqDesc req; 146 struct PVSCSIRingCmpDesc cmp; 147 QTAILQ_ENTRY(PVSCSIRequest) next; 148 } PVSCSIRequest; 149 150 /* Integer binary logarithm */ 151 static int 152 pvscsi_log2(uint32_t input) 153 { 154 int log = 0; 155 assert(input > 0); 156 while (input >> ++log) { 157 } 158 return log; 159 } 160 161 static void 162 pvscsi_ring_init_data(PVSCSIRingInfo *m, PVSCSICmdDescSetupRings *ri) 163 { 164 int i; 165 uint32_t txr_len_log2, rxr_len_log2; 166 uint32_t req_ring_size, cmp_ring_size; 167 m->rs_pa = ri->ringsStatePPN << VMW_PAGE_SHIFT; 168 169 req_ring_size = ri->reqRingNumPages * PVSCSI_MAX_NUM_REQ_ENTRIES_PER_PAGE; 170 cmp_ring_size = ri->cmpRingNumPages * PVSCSI_MAX_NUM_CMP_ENTRIES_PER_PAGE; 171 txr_len_log2 = pvscsi_log2(req_ring_size - 1); 172 rxr_len_log2 = pvscsi_log2(cmp_ring_size - 1); 173 174 m->txr_len_mask = MASK(txr_len_log2); 175 m->rxr_len_mask = MASK(rxr_len_log2); 176 177 m->consumed_ptr = 0; 178 m->filled_cmp_ptr = 0; 179 180 for (i = 0; i < ri->reqRingNumPages; i++) { 181 m->req_ring_pages_pa[i] = ri->reqRingPPNs[i] << VMW_PAGE_SHIFT; 182 } 183 184 for (i = 0; i < ri->cmpRingNumPages; i++) { 185 m->cmp_ring_pages_pa[i] = ri->cmpRingPPNs[i] << VMW_PAGE_SHIFT; 186 } 187 188 RS_SET_FIELD(m, reqProdIdx, 0); 189 RS_SET_FIELD(m, reqConsIdx, 0); 190 RS_SET_FIELD(m, reqNumEntriesLog2, txr_len_log2); 191 192 RS_SET_FIELD(m, cmpProdIdx, 0); 193 RS_SET_FIELD(m, cmpConsIdx, 0); 194 RS_SET_FIELD(m, cmpNumEntriesLog2, rxr_len_log2); 195 196 trace_pvscsi_ring_init_data(txr_len_log2, rxr_len_log2); 197 198 /* Flush ring state page changes */ 199 smp_wmb(); 200 } 201 202 static int 203 pvscsi_ring_init_msg(PVSCSIRingInfo *m, PVSCSICmdDescSetupMsgRing *ri) 204 { 205 int i; 206 uint32_t len_log2; 207 uint32_t ring_size; 208 209 if (!ri->numPages || ri->numPages > PVSCSI_SETUP_MSG_RING_MAX_NUM_PAGES) { 210 return -1; 211 } 212 ring_size = ri->numPages * PVSCSI_MAX_NUM_MSG_ENTRIES_PER_PAGE; 213 len_log2 = pvscsi_log2(ring_size - 1); 214 215 m->msg_len_mask = MASK(len_log2); 216 217 m->filled_msg_ptr = 0; 218 219 for (i = 0; i < ri->numPages; i++) { 220 m->msg_ring_pages_pa[i] = ri->ringPPNs[i] << VMW_PAGE_SHIFT; 221 } 222 223 RS_SET_FIELD(m, msgProdIdx, 0); 224 RS_SET_FIELD(m, msgConsIdx, 0); 225 RS_SET_FIELD(m, msgNumEntriesLog2, len_log2); 226 227 trace_pvscsi_ring_init_msg(len_log2); 228 229 /* Flush ring state page changes */ 230 smp_wmb(); 231 232 return 0; 233 } 234 235 static void 236 pvscsi_ring_cleanup(PVSCSIRingInfo *mgr) 237 { 238 mgr->rs_pa = 0; 239 mgr->txr_len_mask = 0; 240 mgr->rxr_len_mask = 0; 241 mgr->msg_len_mask = 0; 242 mgr->consumed_ptr = 0; 243 mgr->filled_cmp_ptr = 0; 244 mgr->filled_msg_ptr = 0; 245 memset(mgr->req_ring_pages_pa, 0, sizeof(mgr->req_ring_pages_pa)); 246 memset(mgr->cmp_ring_pages_pa, 0, sizeof(mgr->cmp_ring_pages_pa)); 247 memset(mgr->msg_ring_pages_pa, 0, sizeof(mgr->msg_ring_pages_pa)); 248 } 249 250 static hwaddr 251 pvscsi_ring_pop_req_descr(PVSCSIRingInfo *mgr) 252 { 253 uint32_t ready_ptr = RS_GET_FIELD(mgr, reqProdIdx); 254 uint32_t ring_size = PVSCSI_MAX_NUM_PAGES_REQ_RING 255 * PVSCSI_MAX_NUM_REQ_ENTRIES_PER_PAGE; 256 257 if (ready_ptr != mgr->consumed_ptr 258 && ready_ptr - mgr->consumed_ptr < ring_size) { 259 uint32_t next_ready_ptr = 260 mgr->consumed_ptr++ & mgr->txr_len_mask; 261 uint32_t next_ready_page = 262 next_ready_ptr / PVSCSI_MAX_NUM_REQ_ENTRIES_PER_PAGE; 263 uint32_t inpage_idx = 264 next_ready_ptr % PVSCSI_MAX_NUM_REQ_ENTRIES_PER_PAGE; 265 266 return mgr->req_ring_pages_pa[next_ready_page] + 267 inpage_idx * sizeof(PVSCSIRingReqDesc); 268 } else { 269 return 0; 270 } 271 } 272 273 static void 274 pvscsi_ring_flush_req(PVSCSIRingInfo *mgr) 275 { 276 RS_SET_FIELD(mgr, reqConsIdx, mgr->consumed_ptr); 277 } 278 279 static hwaddr 280 pvscsi_ring_pop_cmp_descr(PVSCSIRingInfo *mgr) 281 { 282 /* 283 * According to Linux driver code it explicitly verifies that number 284 * of requests being processed by device is less then the size of 285 * completion queue, so device may omit completion queue overflow 286 * conditions check. We assume that this is true for other (Windows) 287 * drivers as well. 288 */ 289 290 uint32_t free_cmp_ptr = 291 mgr->filled_cmp_ptr++ & mgr->rxr_len_mask; 292 uint32_t free_cmp_page = 293 free_cmp_ptr / PVSCSI_MAX_NUM_CMP_ENTRIES_PER_PAGE; 294 uint32_t inpage_idx = 295 free_cmp_ptr % PVSCSI_MAX_NUM_CMP_ENTRIES_PER_PAGE; 296 return mgr->cmp_ring_pages_pa[free_cmp_page] + 297 inpage_idx * sizeof(PVSCSIRingCmpDesc); 298 } 299 300 static hwaddr 301 pvscsi_ring_pop_msg_descr(PVSCSIRingInfo *mgr) 302 { 303 uint32_t free_msg_ptr = 304 mgr->filled_msg_ptr++ & mgr->msg_len_mask; 305 uint32_t free_msg_page = 306 free_msg_ptr / PVSCSI_MAX_NUM_MSG_ENTRIES_PER_PAGE; 307 uint32_t inpage_idx = 308 free_msg_ptr % PVSCSI_MAX_NUM_MSG_ENTRIES_PER_PAGE; 309 return mgr->msg_ring_pages_pa[free_msg_page] + 310 inpage_idx * sizeof(PVSCSIRingMsgDesc); 311 } 312 313 static void 314 pvscsi_ring_flush_cmp(PVSCSIRingInfo *mgr) 315 { 316 /* Flush descriptor changes */ 317 smp_wmb(); 318 319 trace_pvscsi_ring_flush_cmp(mgr->filled_cmp_ptr); 320 321 RS_SET_FIELD(mgr, cmpProdIdx, mgr->filled_cmp_ptr); 322 } 323 324 static bool 325 pvscsi_ring_msg_has_room(PVSCSIRingInfo *mgr) 326 { 327 uint32_t prodIdx = RS_GET_FIELD(mgr, msgProdIdx); 328 uint32_t consIdx = RS_GET_FIELD(mgr, msgConsIdx); 329 330 return (prodIdx - consIdx) < (mgr->msg_len_mask + 1); 331 } 332 333 static void 334 pvscsi_ring_flush_msg(PVSCSIRingInfo *mgr) 335 { 336 /* Flush descriptor changes */ 337 smp_wmb(); 338 339 trace_pvscsi_ring_flush_msg(mgr->filled_msg_ptr); 340 341 RS_SET_FIELD(mgr, msgProdIdx, mgr->filled_msg_ptr); 342 } 343 344 static void 345 pvscsi_reset_state(PVSCSIState *s) 346 { 347 s->curr_cmd = PVSCSI_CMD_FIRST; 348 s->curr_cmd_data_cntr = 0; 349 s->reg_command_status = PVSCSI_COMMAND_PROCESSING_SUCCEEDED; 350 s->reg_interrupt_status = 0; 351 pvscsi_ring_cleanup(&s->rings); 352 s->rings_info_valid = FALSE; 353 s->msg_ring_info_valid = FALSE; 354 QTAILQ_INIT(&s->pending_queue); 355 QTAILQ_INIT(&s->completion_queue); 356 } 357 358 static void 359 pvscsi_update_irq_status(PVSCSIState *s) 360 { 361 PCIDevice *d = PCI_DEVICE(s); 362 bool should_raise = s->reg_interrupt_enabled & s->reg_interrupt_status; 363 364 trace_pvscsi_update_irq_level(should_raise, s->reg_interrupt_enabled, 365 s->reg_interrupt_status); 366 367 if (msi_enabled(d)) { 368 if (should_raise) { 369 trace_pvscsi_update_irq_msi(); 370 msi_notify(d, PVSCSI_VECTOR_COMPLETION); 371 } 372 return; 373 } 374 375 pci_set_irq(d, !!should_raise); 376 } 377 378 static void 379 pvscsi_raise_completion_interrupt(PVSCSIState *s) 380 { 381 s->reg_interrupt_status |= PVSCSI_INTR_CMPL_0; 382 383 /* Memory barrier to flush interrupt status register changes*/ 384 smp_wmb(); 385 386 pvscsi_update_irq_status(s); 387 } 388 389 static void 390 pvscsi_raise_message_interrupt(PVSCSIState *s) 391 { 392 s->reg_interrupt_status |= PVSCSI_INTR_MSG_0; 393 394 /* Memory barrier to flush interrupt status register changes*/ 395 smp_wmb(); 396 397 pvscsi_update_irq_status(s); 398 } 399 400 static void 401 pvscsi_cmp_ring_put(PVSCSIState *s, struct PVSCSIRingCmpDesc *cmp_desc) 402 { 403 hwaddr cmp_descr_pa; 404 405 cmp_descr_pa = pvscsi_ring_pop_cmp_descr(&s->rings); 406 trace_pvscsi_cmp_ring_put(cmp_descr_pa); 407 cpu_physical_memory_write(cmp_descr_pa, cmp_desc, sizeof(*cmp_desc)); 408 } 409 410 static void 411 pvscsi_msg_ring_put(PVSCSIState *s, struct PVSCSIRingMsgDesc *msg_desc) 412 { 413 hwaddr msg_descr_pa; 414 415 msg_descr_pa = pvscsi_ring_pop_msg_descr(&s->rings); 416 trace_pvscsi_msg_ring_put(msg_descr_pa); 417 cpu_physical_memory_write(msg_descr_pa, msg_desc, sizeof(*msg_desc)); 418 } 419 420 static void 421 pvscsi_process_completion_queue(void *opaque) 422 { 423 PVSCSIState *s = opaque; 424 PVSCSIRequest *pvscsi_req; 425 bool has_completed = false; 426 427 while (!QTAILQ_EMPTY(&s->completion_queue)) { 428 pvscsi_req = QTAILQ_FIRST(&s->completion_queue); 429 QTAILQ_REMOVE(&s->completion_queue, pvscsi_req, next); 430 pvscsi_cmp_ring_put(s, &pvscsi_req->cmp); 431 g_free(pvscsi_req); 432 has_completed = true; 433 } 434 435 if (has_completed) { 436 pvscsi_ring_flush_cmp(&s->rings); 437 pvscsi_raise_completion_interrupt(s); 438 } 439 } 440 441 static void 442 pvscsi_reset_adapter(PVSCSIState *s) 443 { 444 s->resetting++; 445 qbus_reset_all(BUS(&s->bus)); 446 s->resetting--; 447 pvscsi_process_completion_queue(s); 448 assert(QTAILQ_EMPTY(&s->pending_queue)); 449 pvscsi_reset_state(s); 450 } 451 452 static void 453 pvscsi_schedule_completion_processing(PVSCSIState *s) 454 { 455 /* Try putting more complete requests on the ring. */ 456 if (!QTAILQ_EMPTY(&s->completion_queue)) { 457 qemu_bh_schedule(s->completion_worker); 458 } 459 } 460 461 static void 462 pvscsi_complete_request(PVSCSIState *s, PVSCSIRequest *r) 463 { 464 assert(!r->completed); 465 466 trace_pvscsi_complete_request(r->cmp.context, r->cmp.dataLen, 467 r->sense_key); 468 if (r->sreq != NULL) { 469 scsi_req_unref(r->sreq); 470 r->sreq = NULL; 471 } 472 r->completed = 1; 473 QTAILQ_REMOVE(&s->pending_queue, r, next); 474 QTAILQ_INSERT_TAIL(&s->completion_queue, r, next); 475 pvscsi_schedule_completion_processing(s); 476 } 477 478 static QEMUSGList *pvscsi_get_sg_list(SCSIRequest *r) 479 { 480 PVSCSIRequest *req = r->hba_private; 481 482 trace_pvscsi_get_sg_list(req->sgl.nsg, req->sgl.size); 483 484 return &req->sgl; 485 } 486 487 static void 488 pvscsi_get_next_sg_elem(PVSCSISGState *sg) 489 { 490 struct PVSCSISGElement elem; 491 492 cpu_physical_memory_read(sg->elemAddr, &elem, sizeof(elem)); 493 if ((elem.flags & ~PVSCSI_KNOWN_FLAGS) != 0) { 494 /* 495 * There is PVSCSI_SGE_FLAG_CHAIN_ELEMENT flag described in 496 * header file but its value is unknown. This flag requires 497 * additional processing, so we put warning here to catch it 498 * some day and make proper implementation 499 */ 500 trace_pvscsi_get_next_sg_elem(elem.flags); 501 } 502 503 sg->elemAddr += sizeof(elem); 504 sg->dataAddr = elem.addr; 505 sg->resid = elem.length; 506 } 507 508 static void 509 pvscsi_write_sense(PVSCSIRequest *r, uint8_t *sense, int len) 510 { 511 r->cmp.senseLen = MIN(r->req.senseLen, len); 512 r->sense_key = sense[(sense[0] & 2) ? 1 : 2]; 513 cpu_physical_memory_write(r->req.senseAddr, sense, r->cmp.senseLen); 514 } 515 516 static void 517 pvscsi_command_complete(SCSIRequest *req, uint32_t status, size_t resid) 518 { 519 PVSCSIRequest *pvscsi_req = req->hba_private; 520 PVSCSIState *s; 521 522 if (!pvscsi_req) { 523 trace_pvscsi_command_complete_not_found(req->tag); 524 return; 525 } 526 s = pvscsi_req->dev; 527 528 if (resid) { 529 /* Short transfer. */ 530 trace_pvscsi_command_complete_data_run(); 531 pvscsi_req->cmp.hostStatus = BTSTAT_DATARUN; 532 } 533 534 pvscsi_req->cmp.scsiStatus = status; 535 if (pvscsi_req->cmp.scsiStatus == CHECK_CONDITION) { 536 uint8_t sense[SCSI_SENSE_BUF_SIZE]; 537 int sense_len = 538 scsi_req_get_sense(pvscsi_req->sreq, sense, sizeof(sense)); 539 540 trace_pvscsi_command_complete_sense_len(sense_len); 541 pvscsi_write_sense(pvscsi_req, sense, sense_len); 542 } 543 qemu_sglist_destroy(&pvscsi_req->sgl); 544 pvscsi_complete_request(s, pvscsi_req); 545 } 546 547 static void 548 pvscsi_send_msg(PVSCSIState *s, SCSIDevice *dev, uint32_t msg_type) 549 { 550 if (s->msg_ring_info_valid && pvscsi_ring_msg_has_room(&s->rings)) { 551 PVSCSIMsgDescDevStatusChanged msg = {0}; 552 553 msg.type = msg_type; 554 msg.bus = dev->channel; 555 msg.target = dev->id; 556 msg.lun[1] = dev->lun; 557 558 pvscsi_msg_ring_put(s, (PVSCSIRingMsgDesc *)&msg); 559 pvscsi_ring_flush_msg(&s->rings); 560 pvscsi_raise_message_interrupt(s); 561 } 562 } 563 564 static void 565 pvscsi_hotplug(HotplugHandler *hotplug_dev, DeviceState *dev, Error **errp) 566 { 567 PVSCSIState *s = PVSCSI(hotplug_dev); 568 569 pvscsi_send_msg(s, SCSI_DEVICE(dev), PVSCSI_MSG_DEV_ADDED); 570 } 571 572 static void 573 pvscsi_hot_unplug(HotplugHandler *hotplug_dev, DeviceState *dev, Error **errp) 574 { 575 PVSCSIState *s = PVSCSI(hotplug_dev); 576 577 pvscsi_send_msg(s, SCSI_DEVICE(dev), PVSCSI_MSG_DEV_REMOVED); 578 qdev_simple_device_unplug_cb(hotplug_dev, dev, errp); 579 } 580 581 static void 582 pvscsi_request_cancelled(SCSIRequest *req) 583 { 584 PVSCSIRequest *pvscsi_req = req->hba_private; 585 PVSCSIState *s = pvscsi_req->dev; 586 587 if (pvscsi_req->completed) { 588 return; 589 } 590 591 if (pvscsi_req->dev->resetting) { 592 pvscsi_req->cmp.hostStatus = BTSTAT_BUSRESET; 593 } else { 594 pvscsi_req->cmp.hostStatus = BTSTAT_ABORTQUEUE; 595 } 596 597 pvscsi_complete_request(s, pvscsi_req); 598 } 599 600 static SCSIDevice* 601 pvscsi_device_find(PVSCSIState *s, int channel, int target, 602 uint8_t *requested_lun, uint8_t *target_lun) 603 { 604 if (requested_lun[0] || requested_lun[2] || requested_lun[3] || 605 requested_lun[4] || requested_lun[5] || requested_lun[6] || 606 requested_lun[7] || (target > PVSCSI_MAX_DEVS)) { 607 return NULL; 608 } else { 609 *target_lun = requested_lun[1]; 610 return scsi_device_find(&s->bus, channel, target, *target_lun); 611 } 612 } 613 614 static PVSCSIRequest * 615 pvscsi_queue_pending_descriptor(PVSCSIState *s, SCSIDevice **d, 616 struct PVSCSIRingReqDesc *descr) 617 { 618 PVSCSIRequest *pvscsi_req; 619 uint8_t lun; 620 621 pvscsi_req = g_malloc0(sizeof(*pvscsi_req)); 622 pvscsi_req->dev = s; 623 pvscsi_req->req = *descr; 624 pvscsi_req->cmp.context = pvscsi_req->req.context; 625 QTAILQ_INSERT_TAIL(&s->pending_queue, pvscsi_req, next); 626 627 *d = pvscsi_device_find(s, descr->bus, descr->target, descr->lun, &lun); 628 if (*d) { 629 pvscsi_req->lun = lun; 630 } 631 632 return pvscsi_req; 633 } 634 635 static void 636 pvscsi_convert_sglist(PVSCSIRequest *r) 637 { 638 uint32_t chunk_size, elmcnt = 0; 639 uint64_t data_length = r->req.dataLen; 640 PVSCSISGState sg = r->sg; 641 while (data_length && elmcnt < PVSCSI_MAX_SG_ELEM) { 642 while (!sg.resid && elmcnt++ < PVSCSI_MAX_SG_ELEM) { 643 pvscsi_get_next_sg_elem(&sg); 644 trace_pvscsi_convert_sglist(r->req.context, r->sg.dataAddr, 645 r->sg.resid); 646 } 647 chunk_size = MIN(data_length, sg.resid); 648 if (chunk_size) { 649 qemu_sglist_add(&r->sgl, sg.dataAddr, chunk_size); 650 } 651 652 sg.dataAddr += chunk_size; 653 data_length -= chunk_size; 654 sg.resid -= chunk_size; 655 } 656 } 657 658 static void 659 pvscsi_build_sglist(PVSCSIState *s, PVSCSIRequest *r) 660 { 661 PCIDevice *d = PCI_DEVICE(s); 662 663 pci_dma_sglist_init(&r->sgl, d, 1); 664 if (r->req.flags & PVSCSI_FLAG_CMD_WITH_SG_LIST) { 665 pvscsi_convert_sglist(r); 666 } else { 667 qemu_sglist_add(&r->sgl, r->req.dataAddr, r->req.dataLen); 668 } 669 } 670 671 static void 672 pvscsi_process_request_descriptor(PVSCSIState *s, 673 struct PVSCSIRingReqDesc *descr) 674 { 675 SCSIDevice *d; 676 PVSCSIRequest *r = pvscsi_queue_pending_descriptor(s, &d, descr); 677 int64_t n; 678 679 trace_pvscsi_process_req_descr(descr->cdb[0], descr->context); 680 681 if (!d) { 682 r->cmp.hostStatus = BTSTAT_SELTIMEO; 683 trace_pvscsi_process_req_descr_unknown_device(); 684 pvscsi_complete_request(s, r); 685 return; 686 } 687 688 if (descr->flags & PVSCSI_FLAG_CMD_WITH_SG_LIST) { 689 r->sg.elemAddr = descr->dataAddr; 690 } 691 692 r->sreq = scsi_req_new(d, descr->context, r->lun, descr->cdb, r); 693 if (r->sreq->cmd.mode == SCSI_XFER_FROM_DEV && 694 (descr->flags & PVSCSI_FLAG_CMD_DIR_TODEVICE)) { 695 r->cmp.hostStatus = BTSTAT_BADMSG; 696 trace_pvscsi_process_req_descr_invalid_dir(); 697 scsi_req_cancel(r->sreq); 698 return; 699 } 700 if (r->sreq->cmd.mode == SCSI_XFER_TO_DEV && 701 (descr->flags & PVSCSI_FLAG_CMD_DIR_TOHOST)) { 702 r->cmp.hostStatus = BTSTAT_BADMSG; 703 trace_pvscsi_process_req_descr_invalid_dir(); 704 scsi_req_cancel(r->sreq); 705 return; 706 } 707 708 pvscsi_build_sglist(s, r); 709 n = scsi_req_enqueue(r->sreq); 710 711 if (n) { 712 scsi_req_continue(r->sreq); 713 } 714 } 715 716 static void 717 pvscsi_process_io(PVSCSIState *s) 718 { 719 PVSCSIRingReqDesc descr; 720 hwaddr next_descr_pa; 721 722 if (!s->rings_info_valid) { 723 return; 724 } 725 726 while ((next_descr_pa = pvscsi_ring_pop_req_descr(&s->rings)) != 0) { 727 728 /* Only read after production index verification */ 729 smp_rmb(); 730 731 trace_pvscsi_process_io(next_descr_pa); 732 cpu_physical_memory_read(next_descr_pa, &descr, sizeof(descr)); 733 pvscsi_process_request_descriptor(s, &descr); 734 } 735 736 pvscsi_ring_flush_req(&s->rings); 737 } 738 739 static void 740 pvscsi_dbg_dump_tx_rings_config(PVSCSICmdDescSetupRings *rc) 741 { 742 int i; 743 trace_pvscsi_tx_rings_ppn("Rings State", rc->ringsStatePPN); 744 745 trace_pvscsi_tx_rings_num_pages("Request Ring", rc->reqRingNumPages); 746 for (i = 0; i < rc->reqRingNumPages; i++) { 747 trace_pvscsi_tx_rings_ppn("Request Ring", rc->reqRingPPNs[i]); 748 } 749 750 trace_pvscsi_tx_rings_num_pages("Confirm Ring", rc->cmpRingNumPages); 751 for (i = 0; i < rc->cmpRingNumPages; i++) { 752 trace_pvscsi_tx_rings_ppn("Confirm Ring", rc->cmpRingPPNs[i]); 753 } 754 } 755 756 static uint64_t 757 pvscsi_on_cmd_config(PVSCSIState *s) 758 { 759 trace_pvscsi_on_cmd_noimpl("PVSCSI_CMD_CONFIG"); 760 return PVSCSI_COMMAND_PROCESSING_FAILED; 761 } 762 763 static uint64_t 764 pvscsi_on_cmd_unplug(PVSCSIState *s) 765 { 766 trace_pvscsi_on_cmd_noimpl("PVSCSI_CMD_DEVICE_UNPLUG"); 767 return PVSCSI_COMMAND_PROCESSING_FAILED; 768 } 769 770 static uint64_t 771 pvscsi_on_issue_scsi(PVSCSIState *s) 772 { 773 trace_pvscsi_on_cmd_noimpl("PVSCSI_CMD_ISSUE_SCSI"); 774 return PVSCSI_COMMAND_PROCESSING_FAILED; 775 } 776 777 static uint64_t 778 pvscsi_on_cmd_setup_rings(PVSCSIState *s) 779 { 780 PVSCSICmdDescSetupRings *rc = 781 (PVSCSICmdDescSetupRings *) s->curr_cmd_data; 782 783 trace_pvscsi_on_cmd_arrived("PVSCSI_CMD_SETUP_RINGS"); 784 785 if (!rc->reqRingNumPages 786 || rc->reqRingNumPages > PVSCSI_SETUP_RINGS_MAX_NUM_PAGES 787 || !rc->cmpRingNumPages 788 || rc->cmpRingNumPages > PVSCSI_SETUP_RINGS_MAX_NUM_PAGES) { 789 return PVSCSI_COMMAND_PROCESSING_FAILED; 790 } 791 792 pvscsi_dbg_dump_tx_rings_config(rc); 793 pvscsi_ring_init_data(&s->rings, rc); 794 795 s->rings_info_valid = TRUE; 796 return PVSCSI_COMMAND_PROCESSING_SUCCEEDED; 797 } 798 799 static uint64_t 800 pvscsi_on_cmd_abort(PVSCSIState *s) 801 { 802 PVSCSICmdDescAbortCmd *cmd = (PVSCSICmdDescAbortCmd *) s->curr_cmd_data; 803 PVSCSIRequest *r, *next; 804 805 trace_pvscsi_on_cmd_abort(cmd->context, cmd->target); 806 807 QTAILQ_FOREACH_SAFE(r, &s->pending_queue, next, next) { 808 if (r->req.context == cmd->context) { 809 break; 810 } 811 } 812 if (r) { 813 assert(!r->completed); 814 r->cmp.hostStatus = BTSTAT_ABORTQUEUE; 815 scsi_req_cancel(r->sreq); 816 } 817 818 return PVSCSI_COMMAND_PROCESSING_SUCCEEDED; 819 } 820 821 static uint64_t 822 pvscsi_on_cmd_unknown(PVSCSIState *s) 823 { 824 trace_pvscsi_on_cmd_unknown_data(s->curr_cmd_data[0]); 825 return PVSCSI_COMMAND_PROCESSING_FAILED; 826 } 827 828 static uint64_t 829 pvscsi_on_cmd_reset_device(PVSCSIState *s) 830 { 831 uint8_t target_lun = 0; 832 struct PVSCSICmdDescResetDevice *cmd = 833 (struct PVSCSICmdDescResetDevice *) s->curr_cmd_data; 834 SCSIDevice *sdev; 835 836 sdev = pvscsi_device_find(s, 0, cmd->target, cmd->lun, &target_lun); 837 838 trace_pvscsi_on_cmd_reset_dev(cmd->target, (int) target_lun, sdev); 839 840 if (sdev != NULL) { 841 s->resetting++; 842 device_legacy_reset(&sdev->qdev); 843 s->resetting--; 844 return PVSCSI_COMMAND_PROCESSING_SUCCEEDED; 845 } 846 847 return PVSCSI_COMMAND_PROCESSING_FAILED; 848 } 849 850 static uint64_t 851 pvscsi_on_cmd_reset_bus(PVSCSIState *s) 852 { 853 trace_pvscsi_on_cmd_arrived("PVSCSI_CMD_RESET_BUS"); 854 855 s->resetting++; 856 qbus_reset_all(BUS(&s->bus)); 857 s->resetting--; 858 return PVSCSI_COMMAND_PROCESSING_SUCCEEDED; 859 } 860 861 static uint64_t 862 pvscsi_on_cmd_setup_msg_ring(PVSCSIState *s) 863 { 864 PVSCSICmdDescSetupMsgRing *rc = 865 (PVSCSICmdDescSetupMsgRing *) s->curr_cmd_data; 866 867 trace_pvscsi_on_cmd_arrived("PVSCSI_CMD_SETUP_MSG_RING"); 868 869 if (!s->use_msg) { 870 return PVSCSI_COMMAND_PROCESSING_FAILED; 871 } 872 873 if (s->rings_info_valid) { 874 if (pvscsi_ring_init_msg(&s->rings, rc) < 0) { 875 return PVSCSI_COMMAND_PROCESSING_FAILED; 876 } 877 s->msg_ring_info_valid = TRUE; 878 } 879 return sizeof(PVSCSICmdDescSetupMsgRing) / sizeof(uint32_t); 880 } 881 882 static uint64_t 883 pvscsi_on_cmd_adapter_reset(PVSCSIState *s) 884 { 885 trace_pvscsi_on_cmd_arrived("PVSCSI_CMD_ADAPTER_RESET"); 886 887 pvscsi_reset_adapter(s); 888 return PVSCSI_COMMAND_PROCESSING_SUCCEEDED; 889 } 890 891 static const struct { 892 int data_size; 893 uint64_t (*handler_fn)(PVSCSIState *s); 894 } pvscsi_commands[] = { 895 [PVSCSI_CMD_FIRST] = { 896 .data_size = 0, 897 .handler_fn = pvscsi_on_cmd_unknown, 898 }, 899 900 /* Not implemented, data size defined based on what arrives on windows */ 901 [PVSCSI_CMD_CONFIG] = { 902 .data_size = 6 * sizeof(uint32_t), 903 .handler_fn = pvscsi_on_cmd_config, 904 }, 905 906 /* Command not implemented, data size is unknown */ 907 [PVSCSI_CMD_ISSUE_SCSI] = { 908 .data_size = 0, 909 .handler_fn = pvscsi_on_issue_scsi, 910 }, 911 912 /* Command not implemented, data size is unknown */ 913 [PVSCSI_CMD_DEVICE_UNPLUG] = { 914 .data_size = 0, 915 .handler_fn = pvscsi_on_cmd_unplug, 916 }, 917 918 [PVSCSI_CMD_SETUP_RINGS] = { 919 .data_size = sizeof(PVSCSICmdDescSetupRings), 920 .handler_fn = pvscsi_on_cmd_setup_rings, 921 }, 922 923 [PVSCSI_CMD_RESET_DEVICE] = { 924 .data_size = sizeof(struct PVSCSICmdDescResetDevice), 925 .handler_fn = pvscsi_on_cmd_reset_device, 926 }, 927 928 [PVSCSI_CMD_RESET_BUS] = { 929 .data_size = 0, 930 .handler_fn = pvscsi_on_cmd_reset_bus, 931 }, 932 933 [PVSCSI_CMD_SETUP_MSG_RING] = { 934 .data_size = sizeof(PVSCSICmdDescSetupMsgRing), 935 .handler_fn = pvscsi_on_cmd_setup_msg_ring, 936 }, 937 938 [PVSCSI_CMD_ADAPTER_RESET] = { 939 .data_size = 0, 940 .handler_fn = pvscsi_on_cmd_adapter_reset, 941 }, 942 943 [PVSCSI_CMD_ABORT_CMD] = { 944 .data_size = sizeof(struct PVSCSICmdDescAbortCmd), 945 .handler_fn = pvscsi_on_cmd_abort, 946 }, 947 }; 948 949 static void 950 pvscsi_do_command_processing(PVSCSIState *s) 951 { 952 size_t bytes_arrived = s->curr_cmd_data_cntr * sizeof(uint32_t); 953 954 assert(s->curr_cmd < PVSCSI_CMD_LAST); 955 if (bytes_arrived >= pvscsi_commands[s->curr_cmd].data_size) { 956 s->reg_command_status = pvscsi_commands[s->curr_cmd].handler_fn(s); 957 s->curr_cmd = PVSCSI_CMD_FIRST; 958 s->curr_cmd_data_cntr = 0; 959 } 960 } 961 962 static void 963 pvscsi_on_command_data(PVSCSIState *s, uint32_t value) 964 { 965 size_t bytes_arrived = s->curr_cmd_data_cntr * sizeof(uint32_t); 966 967 assert(bytes_arrived < sizeof(s->curr_cmd_data)); 968 s->curr_cmd_data[s->curr_cmd_data_cntr++] = value; 969 970 pvscsi_do_command_processing(s); 971 } 972 973 static void 974 pvscsi_on_command(PVSCSIState *s, uint64_t cmd_id) 975 { 976 if ((cmd_id > PVSCSI_CMD_FIRST) && (cmd_id < PVSCSI_CMD_LAST)) { 977 s->curr_cmd = cmd_id; 978 } else { 979 s->curr_cmd = PVSCSI_CMD_FIRST; 980 trace_pvscsi_on_cmd_unknown(cmd_id); 981 } 982 983 s->curr_cmd_data_cntr = 0; 984 s->reg_command_status = PVSCSI_COMMAND_NOT_ENOUGH_DATA; 985 986 pvscsi_do_command_processing(s); 987 } 988 989 static void 990 pvscsi_io_write(void *opaque, hwaddr addr, 991 uint64_t val, unsigned size) 992 { 993 PVSCSIState *s = opaque; 994 995 switch (addr) { 996 case PVSCSI_REG_OFFSET_COMMAND: 997 pvscsi_on_command(s, val); 998 break; 999 1000 case PVSCSI_REG_OFFSET_COMMAND_DATA: 1001 pvscsi_on_command_data(s, (uint32_t) val); 1002 break; 1003 1004 case PVSCSI_REG_OFFSET_INTR_STATUS: 1005 trace_pvscsi_io_write("PVSCSI_REG_OFFSET_INTR_STATUS", val); 1006 s->reg_interrupt_status &= ~val; 1007 pvscsi_update_irq_status(s); 1008 pvscsi_schedule_completion_processing(s); 1009 break; 1010 1011 case PVSCSI_REG_OFFSET_INTR_MASK: 1012 trace_pvscsi_io_write("PVSCSI_REG_OFFSET_INTR_MASK", val); 1013 s->reg_interrupt_enabled = val; 1014 pvscsi_update_irq_status(s); 1015 break; 1016 1017 case PVSCSI_REG_OFFSET_KICK_NON_RW_IO: 1018 trace_pvscsi_io_write("PVSCSI_REG_OFFSET_KICK_NON_RW_IO", val); 1019 pvscsi_process_io(s); 1020 break; 1021 1022 case PVSCSI_REG_OFFSET_KICK_RW_IO: 1023 trace_pvscsi_io_write("PVSCSI_REG_OFFSET_KICK_RW_IO", val); 1024 pvscsi_process_io(s); 1025 break; 1026 1027 case PVSCSI_REG_OFFSET_DEBUG: 1028 trace_pvscsi_io_write("PVSCSI_REG_OFFSET_DEBUG", val); 1029 break; 1030 1031 default: 1032 trace_pvscsi_io_write_unknown(addr, size, val); 1033 break; 1034 } 1035 1036 } 1037 1038 static uint64_t 1039 pvscsi_io_read(void *opaque, hwaddr addr, unsigned size) 1040 { 1041 PVSCSIState *s = opaque; 1042 1043 switch (addr) { 1044 case PVSCSI_REG_OFFSET_INTR_STATUS: 1045 trace_pvscsi_io_read("PVSCSI_REG_OFFSET_INTR_STATUS", 1046 s->reg_interrupt_status); 1047 return s->reg_interrupt_status; 1048 1049 case PVSCSI_REG_OFFSET_INTR_MASK: 1050 trace_pvscsi_io_read("PVSCSI_REG_OFFSET_INTR_MASK", 1051 s->reg_interrupt_status); 1052 return s->reg_interrupt_enabled; 1053 1054 case PVSCSI_REG_OFFSET_COMMAND_STATUS: 1055 trace_pvscsi_io_read("PVSCSI_REG_OFFSET_COMMAND_STATUS", 1056 s->reg_interrupt_status); 1057 return s->reg_command_status; 1058 1059 default: 1060 trace_pvscsi_io_read_unknown(addr, size); 1061 return 0; 1062 } 1063 } 1064 1065 1066 static void 1067 pvscsi_init_msi(PVSCSIState *s) 1068 { 1069 int res; 1070 PCIDevice *d = PCI_DEVICE(s); 1071 1072 res = msi_init(d, PVSCSI_MSI_OFFSET(s), PVSCSI_MSIX_NUM_VECTORS, 1073 PVSCSI_USE_64BIT, PVSCSI_PER_VECTOR_MASK, NULL); 1074 if (res < 0) { 1075 trace_pvscsi_init_msi_fail(res); 1076 s->msi_used = false; 1077 } else { 1078 s->msi_used = true; 1079 } 1080 } 1081 1082 static void 1083 pvscsi_cleanup_msi(PVSCSIState *s) 1084 { 1085 PCIDevice *d = PCI_DEVICE(s); 1086 1087 msi_uninit(d); 1088 } 1089 1090 static const MemoryRegionOps pvscsi_ops = { 1091 .read = pvscsi_io_read, 1092 .write = pvscsi_io_write, 1093 .endianness = DEVICE_LITTLE_ENDIAN, 1094 .impl = { 1095 .min_access_size = 4, 1096 .max_access_size = 4, 1097 }, 1098 }; 1099 1100 static const struct SCSIBusInfo pvscsi_scsi_info = { 1101 .tcq = true, 1102 .max_target = PVSCSI_MAX_DEVS, 1103 .max_channel = 0, 1104 .max_lun = 0, 1105 1106 .get_sg_list = pvscsi_get_sg_list, 1107 .complete = pvscsi_command_complete, 1108 .cancel = pvscsi_request_cancelled, 1109 }; 1110 1111 static void 1112 pvscsi_realizefn(PCIDevice *pci_dev, Error **errp) 1113 { 1114 PVSCSIState *s = PVSCSI(pci_dev); 1115 1116 trace_pvscsi_state("init"); 1117 1118 /* PCI subsystem ID, subsystem vendor ID, revision */ 1119 if (PVSCSI_USE_OLD_PCI_CONFIGURATION(s)) { 1120 pci_set_word(pci_dev->config + PCI_SUBSYSTEM_ID, 0x1000); 1121 } else { 1122 pci_set_word(pci_dev->config + PCI_SUBSYSTEM_VENDOR_ID, 1123 PCI_VENDOR_ID_VMWARE); 1124 pci_set_word(pci_dev->config + PCI_SUBSYSTEM_ID, 1125 PCI_DEVICE_ID_VMWARE_PVSCSI); 1126 pci_config_set_revision(pci_dev->config, 0x2); 1127 } 1128 1129 /* PCI latency timer = 255 */ 1130 pci_dev->config[PCI_LATENCY_TIMER] = 0xff; 1131 1132 /* Interrupt pin A */ 1133 pci_config_set_interrupt_pin(pci_dev->config, 1); 1134 1135 memory_region_init_io(&s->io_space, OBJECT(s), &pvscsi_ops, s, 1136 "pvscsi-io", PVSCSI_MEM_SPACE_SIZE); 1137 pci_register_bar(pci_dev, 0, PCI_BASE_ADDRESS_SPACE_MEMORY, &s->io_space); 1138 1139 pvscsi_init_msi(s); 1140 1141 if (pci_is_express(pci_dev) && pci_bus_is_express(pci_get_bus(pci_dev))) { 1142 pcie_endpoint_cap_init(pci_dev, PVSCSI_EXP_EP_OFFSET); 1143 } 1144 1145 s->completion_worker = qemu_bh_new(pvscsi_process_completion_queue, s); 1146 1147 scsi_bus_new(&s->bus, sizeof(s->bus), DEVICE(pci_dev), 1148 &pvscsi_scsi_info, NULL); 1149 /* override default SCSI bus hotplug-handler, with pvscsi's one */ 1150 qbus_set_hotplug_handler(BUS(&s->bus), OBJECT(s), &error_abort); 1151 pvscsi_reset_state(s); 1152 } 1153 1154 static void 1155 pvscsi_uninit(PCIDevice *pci_dev) 1156 { 1157 PVSCSIState *s = PVSCSI(pci_dev); 1158 1159 trace_pvscsi_state("uninit"); 1160 qemu_bh_delete(s->completion_worker); 1161 1162 pvscsi_cleanup_msi(s); 1163 } 1164 1165 static void 1166 pvscsi_reset(DeviceState *dev) 1167 { 1168 PCIDevice *d = PCI_DEVICE(dev); 1169 PVSCSIState *s = PVSCSI(d); 1170 1171 trace_pvscsi_state("reset"); 1172 pvscsi_reset_adapter(s); 1173 } 1174 1175 static int 1176 pvscsi_pre_save(void *opaque) 1177 { 1178 PVSCSIState *s = (PVSCSIState *) opaque; 1179 1180 trace_pvscsi_state("presave"); 1181 1182 assert(QTAILQ_EMPTY(&s->pending_queue)); 1183 assert(QTAILQ_EMPTY(&s->completion_queue)); 1184 1185 return 0; 1186 } 1187 1188 static int 1189 pvscsi_post_load(void *opaque, int version_id) 1190 { 1191 trace_pvscsi_state("postload"); 1192 return 0; 1193 } 1194 1195 static bool pvscsi_vmstate_need_pcie_device(void *opaque) 1196 { 1197 PVSCSIState *s = PVSCSI(opaque); 1198 1199 return !(s->compat_flags & PVSCSI_COMPAT_DISABLE_PCIE); 1200 } 1201 1202 static bool pvscsi_vmstate_test_pci_device(void *opaque, int version_id) 1203 { 1204 return !pvscsi_vmstate_need_pcie_device(opaque); 1205 } 1206 1207 static const VMStateDescription vmstate_pvscsi_pcie_device = { 1208 .name = "pvscsi/pcie", 1209 .needed = pvscsi_vmstate_need_pcie_device, 1210 .fields = (VMStateField[]) { 1211 VMSTATE_PCI_DEVICE(parent_obj, PVSCSIState), 1212 VMSTATE_END_OF_LIST() 1213 } 1214 }; 1215 1216 static const VMStateDescription vmstate_pvscsi = { 1217 .name = "pvscsi", 1218 .version_id = 0, 1219 .minimum_version_id = 0, 1220 .pre_save = pvscsi_pre_save, 1221 .post_load = pvscsi_post_load, 1222 .fields = (VMStateField[]) { 1223 VMSTATE_STRUCT_TEST(parent_obj, PVSCSIState, 1224 pvscsi_vmstate_test_pci_device, 0, 1225 vmstate_pci_device, PCIDevice), 1226 VMSTATE_UINT8(msi_used, PVSCSIState), 1227 VMSTATE_UINT32(resetting, PVSCSIState), 1228 VMSTATE_UINT64(reg_interrupt_status, PVSCSIState), 1229 VMSTATE_UINT64(reg_interrupt_enabled, PVSCSIState), 1230 VMSTATE_UINT64(reg_command_status, PVSCSIState), 1231 VMSTATE_UINT64(curr_cmd, PVSCSIState), 1232 VMSTATE_UINT32(curr_cmd_data_cntr, PVSCSIState), 1233 VMSTATE_UINT32_ARRAY(curr_cmd_data, PVSCSIState, 1234 ARRAY_SIZE(((PVSCSIState *)NULL)->curr_cmd_data)), 1235 VMSTATE_UINT8(rings_info_valid, PVSCSIState), 1236 VMSTATE_UINT8(msg_ring_info_valid, PVSCSIState), 1237 VMSTATE_UINT8(use_msg, PVSCSIState), 1238 1239 VMSTATE_UINT64(rings.rs_pa, PVSCSIState), 1240 VMSTATE_UINT32(rings.txr_len_mask, PVSCSIState), 1241 VMSTATE_UINT32(rings.rxr_len_mask, PVSCSIState), 1242 VMSTATE_UINT64_ARRAY(rings.req_ring_pages_pa, PVSCSIState, 1243 PVSCSI_SETUP_RINGS_MAX_NUM_PAGES), 1244 VMSTATE_UINT64_ARRAY(rings.cmp_ring_pages_pa, PVSCSIState, 1245 PVSCSI_SETUP_RINGS_MAX_NUM_PAGES), 1246 VMSTATE_UINT64(rings.consumed_ptr, PVSCSIState), 1247 VMSTATE_UINT64(rings.filled_cmp_ptr, PVSCSIState), 1248 1249 VMSTATE_END_OF_LIST() 1250 }, 1251 .subsections = (const VMStateDescription*[]) { 1252 &vmstate_pvscsi_pcie_device, 1253 NULL 1254 } 1255 }; 1256 1257 static Property pvscsi_properties[] = { 1258 DEFINE_PROP_UINT8("use_msg", PVSCSIState, use_msg, 1), 1259 DEFINE_PROP_BIT("x-old-pci-configuration", PVSCSIState, compat_flags, 1260 PVSCSI_COMPAT_OLD_PCI_CONFIGURATION_BIT, false), 1261 DEFINE_PROP_BIT("x-disable-pcie", PVSCSIState, compat_flags, 1262 PVSCSI_COMPAT_DISABLE_PCIE_BIT, false), 1263 DEFINE_PROP_END_OF_LIST(), 1264 }; 1265 1266 static void pvscsi_realize(DeviceState *qdev, Error **errp) 1267 { 1268 PVSCSIClass *pvs_c = PVSCSI_DEVICE_GET_CLASS(qdev); 1269 PCIDevice *pci_dev = PCI_DEVICE(qdev); 1270 PVSCSIState *s = PVSCSI(qdev); 1271 1272 if (!(s->compat_flags & PVSCSI_COMPAT_DISABLE_PCIE)) { 1273 pci_dev->cap_present |= QEMU_PCI_CAP_EXPRESS; 1274 } 1275 1276 pvs_c->parent_dc_realize(qdev, errp); 1277 } 1278 1279 static void pvscsi_class_init(ObjectClass *klass, void *data) 1280 { 1281 DeviceClass *dc = DEVICE_CLASS(klass); 1282 PCIDeviceClass *k = PCI_DEVICE_CLASS(klass); 1283 PVSCSIClass *pvs_k = PVSCSI_DEVICE_CLASS(klass); 1284 HotplugHandlerClass *hc = HOTPLUG_HANDLER_CLASS(klass); 1285 1286 k->realize = pvscsi_realizefn; 1287 k->exit = pvscsi_uninit; 1288 k->vendor_id = PCI_VENDOR_ID_VMWARE; 1289 k->device_id = PCI_DEVICE_ID_VMWARE_PVSCSI; 1290 k->class_id = PCI_CLASS_STORAGE_SCSI; 1291 k->subsystem_id = 0x1000; 1292 device_class_set_parent_realize(dc, pvscsi_realize, 1293 &pvs_k->parent_dc_realize); 1294 dc->reset = pvscsi_reset; 1295 dc->vmsd = &vmstate_pvscsi; 1296 device_class_set_props(dc, pvscsi_properties); 1297 set_bit(DEVICE_CATEGORY_STORAGE, dc->categories); 1298 hc->unplug = pvscsi_hot_unplug; 1299 hc->plug = pvscsi_hotplug; 1300 } 1301 1302 static const TypeInfo pvscsi_info = { 1303 .name = TYPE_PVSCSI, 1304 .parent = TYPE_PCI_DEVICE, 1305 .class_size = sizeof(PVSCSIClass), 1306 .instance_size = sizeof(PVSCSIState), 1307 .class_init = pvscsi_class_init, 1308 .interfaces = (InterfaceInfo[]) { 1309 { TYPE_HOTPLUG_HANDLER }, 1310 { INTERFACE_PCIE_DEVICE }, 1311 { INTERFACE_CONVENTIONAL_PCI_DEVICE }, 1312 { } 1313 } 1314 }; 1315 1316 static void 1317 pvscsi_register_types(void) 1318 { 1319 type_register_static(&pvscsi_info); 1320 } 1321 1322 type_init(pvscsi_register_types); 1323