hw/s390x/s390-pci-bus.c

   1 /*
   2  * s390 PCI BUS
   3  *
   4  * Copyright 2014 IBM Corp.
   5  * Author(s): Frank Blaschka <frank.blaschka@de.ibm.com>
   6  *            Hong Bo Li <lihbbj@cn.ibm.com>
   7  *            Yi Min Zhao <zyimin@cn.ibm.com>
   8  *
   9  * This work is licensed under the terms of the GNU GPL, version 2 or (at
  10  * your option) any later version. See the COPYING file in the top-level
  11  * directory.
  12  */
  13
  14 #include "qemu/osdep.h"
  15 #include "qapi/error.h"
  16 #include "qapi/visitor.h"
  17 #include "cpu.h"
  18 #include "s390-pci-bus.h"
  19 #include "s390-pci-inst.h"
  20 #include "hw/pci/pci_bus.h"
  21 #include "hw/pci/pci_bridge.h"
  22 #include "hw/pci/msi.h"
  23 #include "qemu/error-report.h"
  24 #include "qemu/module.h"
  25
  26 #ifndef DEBUG_S390PCI_BUS
  27 #define DEBUG_S390PCI_BUS  0
  28 #endif
  29
  30 #define DPRINTF(fmt, ...)                                         \
  31     do {                                                          \
  32         if (DEBUG_S390PCI_BUS) {                                  \
  33             fprintf(stderr, "S390pci-bus: " fmt, ## __VA_ARGS__); \
  34         }                                                         \
  35     } while (0)
  36
  37 S390pciState *s390_get_phb(void)
  38 {
  39     static S390pciState *phb;
  40
  41     if (!phb) {
  42         phb = S390_PCI_HOST_BRIDGE(
  43             object_resolve_path(TYPE_S390_PCI_HOST_BRIDGE, NULL));
  44         assert(phb != NULL);
  45     }
  46
  47     return phb;
  48 }
  49
  50 int pci_chsc_sei_nt2_get_event(void *res)
  51 {
  52     ChscSeiNt2Res *nt2_res = (ChscSeiNt2Res *)res;
  53     PciCcdfAvail *accdf;
  54     PciCcdfErr *eccdf;
  55     int rc = 1;
  56     SeiContainer *sei_cont;
  57     S390pciState *s = s390_get_phb();
  58
  59     sei_cont = QTAILQ_FIRST(&s->pending_sei);
  60     if (sei_cont) {
  61         QTAILQ_REMOVE(&s->pending_sei, sei_cont, link);
  62         nt2_res->nt = 2;
  63         nt2_res->cc = sei_cont->cc;
  64         nt2_res->length = cpu_to_be16(sizeof(ChscSeiNt2Res));
  65         switch (sei_cont->cc) {
  66         case 1: /* error event */
  67             eccdf = (PciCcdfErr *)nt2_res->ccdf;
  68             eccdf->fid = cpu_to_be32(sei_cont->fid);
  69             eccdf->fh = cpu_to_be32(sei_cont->fh);
  70             eccdf->e = cpu_to_be32(sei_cont->e);
  71             eccdf->faddr = cpu_to_be64(sei_cont->faddr);
  72             eccdf->pec = cpu_to_be16(sei_cont->pec);
  73             break;
  74         case 2: /* availability event */
  75             accdf = (PciCcdfAvail *)nt2_res->ccdf;
  76             accdf->fid = cpu_to_be32(sei_cont->fid);
  77             accdf->fh = cpu_to_be32(sei_cont->fh);
  78             accdf->pec = cpu_to_be16(sei_cont->pec);
  79             break;
  80         default:
  81             abort();
  82         }
  83         g_free(sei_cont);
  84         rc = 0;
  85     }
  86
  87     return rc;
  88 }
  89
  90 int pci_chsc_sei_nt2_have_event(void)
  91 {
  92     S390pciState *s = s390_get_phb();
  93
  94     return !QTAILQ_EMPTY(&s->pending_sei);
  95 }
  96
  97 S390PCIBusDevice *s390_pci_find_next_avail_dev(S390pciState *s,
  98                                                S390PCIBusDevice *pbdev)
  99 {
 100     S390PCIBusDevice *ret = pbdev ? QTAILQ_NEXT(pbdev, link) :
 101         QTAILQ_FIRST(&s->zpci_devs);
 102
 103     while (ret && ret->state == ZPCI_FS_RESERVED) {
 104         ret = QTAILQ_NEXT(ret, link);
 105     }
 106
 107     return ret;
 108 }
 109
 110 S390PCIBusDevice *s390_pci_find_dev_by_fid(S390pciState *s, uint32_t fid)
 111 {
 112     S390PCIBusDevice *pbdev;
 113
 114     QTAILQ_FOREACH(pbdev, &s->zpci_devs, link) {
 115         if (pbdev->fid == fid) {
 116             return pbdev;
 117         }
 118     }
 119
 120     return NULL;
 121 }
 122
 123 void s390_pci_sclp_configure(SCCB *sccb)
 124 {
 125     IoaCfgSccb *psccb = (IoaCfgSccb *)sccb;
 126     S390PCIBusDevice *pbdev = s390_pci_find_dev_by_fid(s390_get_phb(),
 127                                                        be32_to_cpu(psccb->aid));
 128     uint16_t rc;
 129
 130     if (!pbdev) {
 131         DPRINTF("sclp config no dev found\n");
 132         rc = SCLP_RC_ADAPTER_ID_NOT_RECOGNIZED;
 133         goto out;
 134     }
 135
 136     switch (pbdev->state) {
 137     case ZPCI_FS_RESERVED:
 138         rc = SCLP_RC_ADAPTER_IN_RESERVED_STATE;
 139         break;
 140     case ZPCI_FS_STANDBY:
 141         pbdev->state = ZPCI_FS_DISABLED;
 142         rc = SCLP_RC_NORMAL_COMPLETION;
 143         break;
 144     default:
 145         rc = SCLP_RC_NO_ACTION_REQUIRED;
 146     }
 147 out:
 148     psccb->header.response_code = cpu_to_be16(rc);
 149 }
 150
 151 static void s390_pci_perform_unplug(S390PCIBusDevice *pbdev)
 152 {
 153     HotplugHandler *hotplug_ctrl;
 154
 155     /* Unplug the PCI device */
 156     if (pbdev->pdev) {
 157         DeviceState *pdev = DEVICE(pbdev->pdev);
 158
 159         hotplug_ctrl = qdev_get_hotplug_handler(pdev);
 160         hotplug_handler_unplug(hotplug_ctrl, pdev, &error_abort);
 161         object_unparent(OBJECT(pdev));
 162     }
 163
 164     /* Unplug the zPCI device */
 165     hotplug_ctrl = qdev_get_hotplug_handler(DEVICE(pbdev));
 166     hotplug_handler_unplug(hotplug_ctrl, DEVICE(pbdev), &error_abort);
 167     object_unparent(OBJECT(pbdev));
 168 }
 169
 170 void s390_pci_sclp_deconfigure(SCCB *sccb)
 171 {
 172     IoaCfgSccb *psccb = (IoaCfgSccb *)sccb;
 173     S390PCIBusDevice *pbdev = s390_pci_find_dev_by_fid(s390_get_phb(),
 174                                                        be32_to_cpu(psccb->aid));
 175     uint16_t rc;
 176
 177     if (!pbdev) {
 178         DPRINTF("sclp deconfig no dev found\n");
 179         rc = SCLP_RC_ADAPTER_ID_NOT_RECOGNIZED;
 180         goto out;
 181     }
 182
 183     switch (pbdev->state) {
 184     case ZPCI_FS_RESERVED:
 185         rc = SCLP_RC_ADAPTER_IN_RESERVED_STATE;
 186         break;
 187     case ZPCI_FS_STANDBY:
 188         rc = SCLP_RC_NO_ACTION_REQUIRED;
 189         break;
 190     default:
 191         if (pbdev->summary_ind) {
 192             pci_dereg_irqs(pbdev);
 193         }
 194         if (pbdev->iommu->enabled) {
 195             pci_dereg_ioat(pbdev->iommu);
 196         }
 197         pbdev->state = ZPCI_FS_STANDBY;
 198         rc = SCLP_RC_NORMAL_COMPLETION;
 199
 200         if (pbdev->unplug_requested) {
 201             s390_pci_perform_unplug(pbdev);
 202         }
 203     }
 204 out:
 205     psccb->header.response_code = cpu_to_be16(rc);
 206 }
 207
 208 static S390PCIBusDevice *s390_pci_find_dev_by_uid(S390pciState *s, uint16_t uid)
 209 {
 210     S390PCIBusDevice *pbdev;
 211
 212     QTAILQ_FOREACH(pbdev, &s->zpci_devs, link) {
 213         if (pbdev->uid == uid) {
 214             return pbdev;
 215         }
 216     }
 217
 218     return NULL;
 219 }
 220
 221 S390PCIBusDevice *s390_pci_find_dev_by_target(S390pciState *s,
 222                                               const char *target)
 223 {
 224     S390PCIBusDevice *pbdev;
 225
 226     if (!target) {
 227         return NULL;
 228     }
 229
 230     QTAILQ_FOREACH(pbdev, &s->zpci_devs, link) {
 231         if (!strcmp(pbdev->target, target)) {
 232             return pbdev;
 233         }
 234     }
 235
 236     return NULL;
 237 }
 238
 239 static S390PCIBusDevice *s390_pci_find_dev_by_pci(S390pciState *s,
 240                                                   PCIDevice *pci_dev)
 241 {
 242     S390PCIBusDevice *pbdev;
 243
 244     if (!pci_dev) {
 245         return NULL;
 246     }
 247
 248     QTAILQ_FOREACH(pbdev, &s->zpci_devs, link) {
 249         if (pbdev->pdev == pci_dev) {
 250             return pbdev;
 251         }
 252     }
 253
 254     return NULL;
 255 }
 256
 257 S390PCIBusDevice *s390_pci_find_dev_by_idx(S390pciState *s, uint32_t idx)
 258 {
 259     return g_hash_table_lookup(s->zpci_table, &idx);
 260 }
 261
 262 S390PCIBusDevice *s390_pci_find_dev_by_fh(S390pciState *s, uint32_t fh)
 263 {
 264     uint32_t idx = FH_MASK_INDEX & fh;
 265     S390PCIBusDevice *pbdev = s390_pci_find_dev_by_idx(s, idx);
 266
 267     if (pbdev && pbdev->fh == fh) {
 268         return pbdev;
 269     }
 270
 271     return NULL;
 272 }
 273
 274 static void s390_pci_generate_event(uint8_t cc, uint16_t pec, uint32_t fh,
 275                                     uint32_t fid, uint64_t faddr, uint32_t e)
 276 {
 277     SeiContainer *sei_cont;
 278     S390pciState *s = s390_get_phb();
 279
 280     sei_cont = g_new0(SeiContainer, 1);
 281     sei_cont->fh = fh;
 282     sei_cont->fid = fid;
 283     sei_cont->cc = cc;
 284     sei_cont->pec = pec;
 285     sei_cont->faddr = faddr;
 286     sei_cont->e = e;
 287
 288     QTAILQ_INSERT_TAIL(&s->pending_sei, sei_cont, link);
 289     css_generate_css_crws(0);
 290 }
 291
 292 static void s390_pci_generate_plug_event(uint16_t pec, uint32_t fh,
 293                                          uint32_t fid)
 294 {
 295     s390_pci_generate_event(2, pec, fh, fid, 0, 0);
 296 }
 297
 298 void s390_pci_generate_error_event(uint16_t pec, uint32_t fh, uint32_t fid,
 299                                    uint64_t faddr, uint32_t e)
 300 {
 301     s390_pci_generate_event(1, pec, fh, fid, faddr, e);
 302 }
 303
 304 static void s390_pci_set_irq(void *opaque, int irq, int level)
 305 {
 306     /* nothing to do */
 307 }
 308
 309 static int s390_pci_map_irq(PCIDevice *pci_dev, int irq_num)
 310 {
 311     /* nothing to do */
 312     return 0;
 313 }
 314
 315 static uint64_t s390_pci_get_table_origin(uint64_t iota)
 316 {
 317     return iota & ~ZPCI_IOTA_RTTO_FLAG;
 318 }
 319
 320 static unsigned int calc_rtx(dma_addr_t ptr)
 321 {
 322     return ((unsigned long) ptr >> ZPCI_RT_SHIFT) & ZPCI_INDEX_MASK;
 323 }
 324
 325 static unsigned int calc_sx(dma_addr_t ptr)
 326 {
 327     return ((unsigned long) ptr >> ZPCI_ST_SHIFT) & ZPCI_INDEX_MASK;
 328 }
 329
 330 static unsigned int calc_px(dma_addr_t ptr)
 331 {
 332     return ((unsigned long) ptr >> PAGE_SHIFT) & ZPCI_PT_MASK;
 333 }
 334
 335 static uint64_t get_rt_sto(uint64_t entry)
 336 {
 337     return ((entry & ZPCI_TABLE_TYPE_MASK) == ZPCI_TABLE_TYPE_RTX)
 338                 ? (entry & ZPCI_RTE_ADDR_MASK)
 339                 : 0;
 340 }
 341
 342 static uint64_t get_st_pto(uint64_t entry)
 343 {
 344     return ((entry & ZPCI_TABLE_TYPE_MASK) == ZPCI_TABLE_TYPE_SX)
 345             ? (entry & ZPCI_STE_ADDR_MASK)
 346             : 0;
 347 }
 348
 349 static bool rt_entry_isvalid(uint64_t entry)
 350 {
 351     return (entry & ZPCI_TABLE_VALID_MASK) == ZPCI_TABLE_VALID;
 352 }
 353
 354 static bool pt_entry_isvalid(uint64_t entry)
 355 {
 356     return (entry & ZPCI_PTE_VALID_MASK) == ZPCI_PTE_VALID;
 357 }
 358
 359 static bool entry_isprotected(uint64_t entry)
 360 {
 361     return (entry & ZPCI_TABLE_PROT_MASK) == ZPCI_TABLE_PROTECTED;
 362 }
 363
 364 /* ett is expected table type, -1 page table, 0 segment table, 1 region table */
 365 static uint64_t get_table_index(uint64_t iova, int8_t ett)
 366 {
 367     switch (ett) {
 368     case ZPCI_ETT_PT:
 369         return calc_px(iova);
 370     case ZPCI_ETT_ST:
 371         return calc_sx(iova);
 372     case ZPCI_ETT_RT:
 373         return calc_rtx(iova);
 374     }
 375
 376     return -1;
 377 }
 378
 379 static bool entry_isvalid(uint64_t entry, int8_t ett)
 380 {
 381     switch (ett) {
 382     case ZPCI_ETT_PT:
 383         return pt_entry_isvalid(entry);
 384     case ZPCI_ETT_ST:
 385     case ZPCI_ETT_RT:
 386         return rt_entry_isvalid(entry);
 387     }
 388
 389     return false;
 390 }
 391
 392 /* Return true if address translation is done */
 393 static bool translate_iscomplete(uint64_t entry, int8_t ett)
 394 {
 395     switch (ett) {
 396     case 0:
 397         return (entry & ZPCI_TABLE_FC) ? true : false;
 398     case 1:
 399         return false;
 400     }
 401
 402     return true;
 403 }
 404
 405 static uint64_t get_frame_size(int8_t ett)
 406 {
 407     switch (ett) {
 408     case ZPCI_ETT_PT:
 409         return 1ULL << 12;
 410     case ZPCI_ETT_ST:
 411         return 1ULL << 20;
 412     case ZPCI_ETT_RT:
 413         return 1ULL << 31;
 414     }
 415
 416     return 0;
 417 }
 418
 419 static uint64_t get_next_table_origin(uint64_t entry, int8_t ett)
 420 {
 421     switch (ett) {
 422     case ZPCI_ETT_PT:
 423         return entry & ZPCI_PTE_ADDR_MASK;
 424     case ZPCI_ETT_ST:
 425         return get_st_pto(entry);
 426     case ZPCI_ETT_RT:
 427         return get_rt_sto(entry);
 428     }
 429
 430     return 0;
 431 }
 432
 433 /**
 434  * table_translate: do translation within one table and return the following
 435  *                  table origin
 436  *
 437  * @entry: the entry being translated, the result is stored in this.
 438  * @to: the address of table origin.
 439  * @ett: expected table type, 1 region table, 0 segment table and -1 page table.
 440  * @error: error code
 441  */
 442 static uint64_t table_translate(S390IOTLBEntry *entry, uint64_t to, int8_t ett,
 443                                 uint16_t *error)
 444 {
 445     uint64_t tx, te, nto = 0;
 446     uint16_t err = 0;
 447
 448     tx = get_table_index(entry->iova, ett);
 449     te = address_space_ldq(&address_space_memory, to + tx * sizeof(uint64_t),
 450                            MEMTXATTRS_UNSPECIFIED, NULL);
 451
 452     if (!te) {
 453         err = ERR_EVENT_INVALTE;
 454         goto out;
 455     }
 456
 457     if (!entry_isvalid(te, ett)) {
 458         entry->perm &= IOMMU_NONE;
 459         goto out;
 460     }
 461
 462     if (ett == ZPCI_ETT_RT && ((te & ZPCI_TABLE_LEN_RTX) != ZPCI_TABLE_LEN_RTX
 463                                || te & ZPCI_TABLE_OFFSET_MASK)) {
 464         err = ERR_EVENT_INVALTL;
 465         goto out;
 466     }
 467
 468     nto = get_next_table_origin(te, ett);
 469     if (!nto) {
 470         err = ERR_EVENT_TT;
 471         goto out;
 472     }
 473
 474     if (entry_isprotected(te)) {
 475         entry->perm &= IOMMU_RO;
 476     } else {
 477         entry->perm &= IOMMU_RW;
 478     }
 479
 480     if (translate_iscomplete(te, ett)) {
 481         switch (ett) {
 482         case ZPCI_ETT_PT:
 483             entry->translated_addr = te & ZPCI_PTE_ADDR_MASK;
 484             break;
 485         case ZPCI_ETT_ST:
 486             entry->translated_addr = (te & ZPCI_SFAA_MASK) |
 487                 (entry->iova & ~ZPCI_SFAA_MASK);
 488             break;
 489         }
 490         nto = 0;
 491     }
 492 out:
 493     if (err) {
 494         entry->perm = IOMMU_NONE;
 495         *error = err;
 496     }
 497     entry->len = get_frame_size(ett);
 498     return nto;
 499 }
 500
 501 uint16_t s390_guest_io_table_walk(uint64_t g_iota, hwaddr addr,
 502                                   S390IOTLBEntry *entry)
 503 {
 504     uint64_t to = s390_pci_get_table_origin(g_iota);
 505     int8_t ett = 1;
 506     uint16_t error = 0;
 507
 508     entry->iova = addr & PAGE_MASK;
 509     entry->translated_addr = 0;
 510     entry->perm = IOMMU_RW;
 511
 512     if (entry_isprotected(g_iota)) {
 513         entry->perm &= IOMMU_RO;
 514     }
 515
 516     while (to) {
 517         to = table_translate(entry, to, ett--, &error);
 518     }
 519
 520     return error;
 521 }
 522
 523 static IOMMUTLBEntry s390_translate_iommu(IOMMUMemoryRegion *mr, hwaddr addr,
 524                                           IOMMUAccessFlags flag, int iommu_idx)
 525 {
 526     S390PCIIOMMU *iommu = container_of(mr, S390PCIIOMMU, iommu_mr);
 527     S390IOTLBEntry *entry;
 528     uint64_t iova = addr & PAGE_MASK;
 529     uint16_t error = 0;
 530     IOMMUTLBEntry ret = {
 531         .target_as = &address_space_memory,
 532         .iova = 0,
 533         .translated_addr = 0,
 534         .addr_mask = ~(hwaddr)0,
 535         .perm = IOMMU_NONE,
 536     };
 537
 538     switch (iommu->pbdev->state) {
 539     case ZPCI_FS_ENABLED:
 540     case ZPCI_FS_BLOCKED:
 541         if (!iommu->enabled) {
 542             return ret;
 543         }
 544         break;
 545     default:
 546         return ret;
 547     }
 548
 549     DPRINTF("iommu trans addr 0x%" PRIx64 "\n", addr);
 550
 551     if (addr < iommu->pba || addr > iommu->pal) {
 552         error = ERR_EVENT_OORANGE;
 553         goto err;
 554     }
 555
 556     entry = g_hash_table_lookup(iommu->iotlb, &iova);
 557     if (entry) {
 558         ret.iova = entry->iova;
 559         ret.translated_addr = entry->translated_addr;
 560         ret.addr_mask = entry->len - 1;
 561         ret.perm = entry->perm;
 562     } else {
 563         ret.iova = iova;
 564         ret.addr_mask = ~PAGE_MASK;
 565         ret.perm = IOMMU_NONE;
 566     }
 567
 568     if (flag != IOMMU_NONE && !(flag & ret.perm)) {
 569         error = ERR_EVENT_TPROTE;
 570     }
 571 err:
 572     if (error) {
 573         iommu->pbdev->state = ZPCI_FS_ERROR;
 574         s390_pci_generate_error_event(error, iommu->pbdev->fh,
 575                                       iommu->pbdev->fid, addr, 0);
 576     }
 577     return ret;
 578 }
 579
 580 static void s390_pci_iommu_replay(IOMMUMemoryRegion *iommu,
 581                                   IOMMUNotifier *notifier)
 582 {
 583     /* It's impossible to plug a pci device on s390x that already has iommu
 584      * mappings which need to be replayed, that is due to the "one iommu per
 585      * zpci device" construct. But when we support migration of vfio-pci
 586      * devices in future, we need to revisit this.
 587      */
 588     return;
 589 }
 590
 591 static S390PCIIOMMU *s390_pci_get_iommu(S390pciState *s, PCIBus *bus,
 592                                         int devfn)
 593 {
 594     uint64_t key = (uintptr_t)bus;
 595     S390PCIIOMMUTable *table = g_hash_table_lookup(s->iommu_table, &key);
 596     S390PCIIOMMU *iommu;
 597
 598     if (!table) {
 599         table = g_new0(S390PCIIOMMUTable, 1);
 600         table->key = key;
 601         g_hash_table_insert(s->iommu_table, &table->key, table);
 602     }
 603
 604     iommu = table->iommu[PCI_SLOT(devfn)];
 605     if (!iommu) {
 606         iommu = S390_PCI_IOMMU(object_new(TYPE_S390_PCI_IOMMU));
 607
 608         char *mr_name = g_strdup_printf("iommu-root-%02x:%02x.%01x",
 609                                         pci_bus_num(bus),
 610                                         PCI_SLOT(devfn),
 611                                         PCI_FUNC(devfn));
 612         char *as_name = g_strdup_printf("iommu-pci-%02x:%02x.%01x",
 613                                         pci_bus_num(bus),
 614                                         PCI_SLOT(devfn),
 615                                         PCI_FUNC(devfn));
 616         memory_region_init(&iommu->mr, OBJECT(iommu), mr_name, UINT64_MAX);
 617         address_space_init(&iommu->as, &iommu->mr, as_name);
 618         iommu->iotlb = g_hash_table_new_full(g_int64_hash, g_int64_equal,
 619                                              NULL, g_free);
 620         table->iommu[PCI_SLOT(devfn)] = iommu;
 621
 622         g_free(mr_name);
 623         g_free(as_name);
 624     }
 625
 626     return iommu;
 627 }
 628
 629 static AddressSpace *s390_pci_dma_iommu(PCIBus *bus, void *opaque, int devfn)
 630 {
 631     S390pciState *s = opaque;
 632     S390PCIIOMMU *iommu = s390_pci_get_iommu(s, bus, devfn);
 633
 634     return &iommu->as;
 635 }
 636
 637 static uint8_t set_ind_atomic(uint64_t ind_loc, uint8_t to_be_set)
 638 {
 639     uint8_t ind_old, ind_new;
 640     hwaddr len = 1;
 641     uint8_t *ind_addr;
 642
 643     ind_addr = cpu_physical_memory_map(ind_loc, &len, 1);
 644     if (!ind_addr) {
 645         s390_pci_generate_error_event(ERR_EVENT_AIRERR, 0, 0, 0, 0);
 646         return -1;
 647     }
 648     do {
 649         ind_old = *ind_addr;
 650         ind_new = ind_old | to_be_set;
 651     } while (atomic_cmpxchg(ind_addr, ind_old, ind_new) != ind_old);
 652     cpu_physical_memory_unmap(ind_addr, len, 1, len);
 653
 654     return ind_old;
 655 }
 656
 657 static void s390_msi_ctrl_write(void *opaque, hwaddr addr, uint64_t data,
 658                                 unsigned int size)
 659 {
 660     S390PCIBusDevice *pbdev = opaque;
 661     uint32_t vec = data & ZPCI_MSI_VEC_MASK;
 662     uint64_t ind_bit;
 663     uint32_t sum_bit;
 664
 665     assert(pbdev);
 666     DPRINTF("write_msix data 0x%" PRIx64 " idx %d vec 0x%x\n", data,
 667             pbdev->idx, vec);
 668
 669     if (pbdev->state != ZPCI_FS_ENABLED) {
 670         return;
 671     }
 672
 673     ind_bit = pbdev->routes.adapter.ind_offset;
 674     sum_bit = pbdev->routes.adapter.summary_offset;
 675
 676     set_ind_atomic(pbdev->routes.adapter.ind_addr + (ind_bit + vec) / 8,
 677                    0x80 >> ((ind_bit + vec) % 8));
 678     if (!set_ind_atomic(pbdev->routes.adapter.summary_addr + sum_bit / 8,
 679                                        0x80 >> (sum_bit % 8))) {
 680         css_adapter_interrupt(CSS_IO_ADAPTER_PCI, pbdev->isc);
 681     }
 682 }
 683
 684 static uint64_t s390_msi_ctrl_read(void *opaque, hwaddr addr, unsigned size)
 685 {
 686     return 0xffffffff;
 687 }
 688
 689 static const MemoryRegionOps s390_msi_ctrl_ops = {
 690     .write = s390_msi_ctrl_write,
 691     .read = s390_msi_ctrl_read,
 692     .endianness = DEVICE_LITTLE_ENDIAN,
 693 };
 694
 695 void s390_pci_iommu_enable(S390PCIIOMMU *iommu)
 696 {
 697     /*
 698      * The iommu region is initialized against a 0-mapped address space,
 699      * so the smallest IOMMU region we can define runs from 0 to the end
 700      * of the PCI address space.
 701      */
 702     char *name = g_strdup_printf("iommu-s390-%04x", iommu->pbdev->uid);
 703     memory_region_init_iommu(&iommu->iommu_mr, sizeof(iommu->iommu_mr),
 704                              TYPE_S390_IOMMU_MEMORY_REGION, OBJECT(&iommu->mr),
 705                              name, iommu->pal + 1);
 706     iommu->enabled = true;
 707     memory_region_add_subregion(&iommu->mr, 0, MEMORY_REGION(&iommu->iommu_mr));
 708     g_free(name);
 709 }
 710
 711 void s390_pci_iommu_disable(S390PCIIOMMU *iommu)
 712 {
 713     iommu->enabled = false;
 714     g_hash_table_remove_all(iommu->iotlb);
 715     memory_region_del_subregion(&iommu->mr, MEMORY_REGION(&iommu->iommu_mr));
 716     object_unparent(OBJECT(&iommu->iommu_mr));
 717 }
 718
 719 static void s390_pci_iommu_free(S390pciState *s, PCIBus *bus, int32_t devfn)
 720 {
 721     uint64_t key = (uintptr_t)bus;
 722     S390PCIIOMMUTable *table = g_hash_table_lookup(s->iommu_table, &key);
 723     S390PCIIOMMU *iommu = table ? table->iommu[PCI_SLOT(devfn)] : NULL;
 724
 725     if (!table || !iommu) {
 726         return;
 727     }
 728
 729     table->iommu[PCI_SLOT(devfn)] = NULL;
 730     g_hash_table_destroy(iommu->iotlb);
 731     address_space_destroy(&iommu->as);
 732     object_unparent(OBJECT(&iommu->mr));
 733     object_unparent(OBJECT(iommu));
 734     object_unref(OBJECT(iommu));
 735 }
 736
 737 static void s390_pcihost_realize(DeviceState *dev, Error **errp)
 738 {
 739     PCIBus *b;
 740     BusState *bus;
 741     PCIHostState *phb = PCI_HOST_BRIDGE(dev);
 742     S390pciState *s = S390_PCI_HOST_BRIDGE(dev);
 743     Error *local_err = NULL;
 744
 745     DPRINTF("host_init\n");
 746
 747     b = pci_register_root_bus(dev, NULL, s390_pci_set_irq, s390_pci_map_irq,
 748                               NULL, get_system_memory(), get_system_io(), 0,
 749                               64, TYPE_PCI_BUS);
 750     pci_setup_iommu(b, s390_pci_dma_iommu, s);
 751
 752     bus = BUS(b);
 753     qbus_set_hotplug_handler(bus, OBJECT(dev), &local_err);
 754     if (local_err) {
 755         error_propagate(errp, local_err);
 756         return;
 757     }
 758     phb->bus = b;
 759
 760     s->bus = S390_PCI_BUS(qbus_create(TYPE_S390_PCI_BUS, dev, NULL));
 761     qbus_set_hotplug_handler(BUS(s->bus), OBJECT(dev), &local_err);
 762     if (local_err) {
 763         error_propagate(errp, local_err);
 764         return;
 765     }
 766
 767     s->iommu_table = g_hash_table_new_full(g_int64_hash, g_int64_equal,
 768                                            NULL, g_free);
 769     s->zpci_table = g_hash_table_new_full(g_int_hash, g_int_equal, NULL, NULL);
 770     s->bus_no = 0;
 771     QTAILQ_INIT(&s->pending_sei);
 772     QTAILQ_INIT(&s->zpci_devs);
 773
 774     css_register_io_adapters(CSS_IO_ADAPTER_PCI, true, false,
 775                              S390_ADAPTER_SUPPRESSIBLE, &local_err);
 776     error_propagate(errp, local_err);
 777 }
 778
 779 static int s390_pci_msix_init(S390PCIBusDevice *pbdev)
 780 {
 781     char *name;
 782     uint8_t pos;
 783     uint16_t ctrl;
 784     uint32_t table, pba;
 785
 786     pos = pci_find_capability(pbdev->pdev, PCI_CAP_ID_MSIX);
 787     if (!pos) {
 788         return -1;
 789     }
 790
 791     ctrl = pci_host_config_read_common(pbdev->pdev, pos + PCI_MSIX_FLAGS,
 792              pci_config_size(pbdev->pdev), sizeof(ctrl));
 793     table = pci_host_config_read_common(pbdev->pdev, pos + PCI_MSIX_TABLE,
 794              pci_config_size(pbdev->pdev), sizeof(table));
 795     pba = pci_host_config_read_common(pbdev->pdev, pos + PCI_MSIX_PBA,
 796              pci_config_size(pbdev->pdev), sizeof(pba));
 797
 798     pbdev->msix.table_bar = table & PCI_MSIX_FLAGS_BIRMASK;
 799     pbdev->msix.table_offset = table & ~PCI_MSIX_FLAGS_BIRMASK;
 800     pbdev->msix.pba_bar = pba & PCI_MSIX_FLAGS_BIRMASK;
 801     pbdev->msix.pba_offset = pba & ~PCI_MSIX_FLAGS_BIRMASK;
 802     pbdev->msix.entries = (ctrl & PCI_MSIX_FLAGS_QSIZE) + 1;
 803
 804     name = g_strdup_printf("msix-s390-%04x", pbdev->uid);
 805     memory_region_init_io(&pbdev->msix_notify_mr, OBJECT(pbdev),
 806                           &s390_msi_ctrl_ops, pbdev, name, PAGE_SIZE);
 807     memory_region_add_subregion(&pbdev->iommu->mr, ZPCI_MSI_ADDR,
 808                                 &pbdev->msix_notify_mr);
 809     g_free(name);
 810
 811     return 0;
 812 }
 813
 814 static void s390_pci_msix_free(S390PCIBusDevice *pbdev)
 815 {
 816     memory_region_del_subregion(&pbdev->iommu->mr, &pbdev->msix_notify_mr);
 817     object_unparent(OBJECT(&pbdev->msix_notify_mr));
 818 }
 819
 820 static S390PCIBusDevice *s390_pci_device_new(S390pciState *s,
 821                                              const char *target, Error **errp)
 822 {
 823     Error *local_err = NULL;
 824     DeviceState *dev;
 825
 826     dev = qdev_try_create(BUS(s->bus), TYPE_S390_PCI_DEVICE);
 827     if (!dev) {
 828         error_setg(errp, "zPCI device could not be created");
 829         return NULL;
 830     }
 831
 832     object_property_set_str(OBJECT(dev), target, "target", &local_err);
 833     if (local_err) {
 834         object_unparent(OBJECT(dev));
 835         error_propagate_prepend(errp, local_err,
 836                                 "zPCI device could not be created: ");
 837         return NULL;
 838     }
 839     object_property_set_bool(OBJECT(dev), true, "realized", &local_err);
 840     if (local_err) {
 841         object_unparent(OBJECT(dev));
 842         error_propagate_prepend(errp, local_err,
 843                                 "zPCI device could not be created: ");
 844         return NULL;
 845     }
 846
 847     return S390_PCI_DEVICE(dev);
 848 }
 849
 850 static bool s390_pci_alloc_idx(S390pciState *s, S390PCIBusDevice *pbdev)
 851 {
 852     uint32_t idx;
 853
 854     idx = s->next_idx;
 855     while (s390_pci_find_dev_by_idx(s, idx)) {
 856         idx = (idx + 1) & FH_MASK_INDEX;
 857         if (idx == s->next_idx) {
 858             return false;
 859         }
 860     }
 861
 862     pbdev->idx = idx;
 863     return true;
 864 }
 865
 866 static void s390_pcihost_pre_plug(HotplugHandler *hotplug_dev, DeviceState *dev,
 867                                    Error **errp)
 868 {
 869     S390pciState *s = S390_PCI_HOST_BRIDGE(hotplug_dev);
 870
 871     if (!s390_has_feat(S390_FEAT_ZPCI)) {
 872         warn_report("Plugging a PCI/zPCI device without the 'zpci' CPU "
 873                     "feature enabled; the guest will not be able to see/use "
 874                     "this device");
 875     }
 876
 877     if (object_dynamic_cast(OBJECT(dev), TYPE_PCI_DEVICE)) {
 878         PCIDevice *pdev = PCI_DEVICE(dev);
 879
 880         if (pdev->cap_present & QEMU_PCI_CAP_MULTIFUNCTION) {
 881             error_setg(errp, "multifunction not supported in s390");
 882             return;
 883         }
 884     } else if (object_dynamic_cast(OBJECT(dev), TYPE_S390_PCI_DEVICE)) {
 885         S390PCIBusDevice *pbdev = S390_PCI_DEVICE(dev);
 886
 887         if (!s390_pci_alloc_idx(s, pbdev)) {
 888             error_setg(errp, "no slot for plugging zpci device");
 889             return;
 890         }
 891     }
 892 }
 893
 894 static void s390_pci_update_subordinate(PCIDevice *dev, uint32_t nr)
 895 {
 896     uint32_t old_nr;
 897
 898     pci_default_write_config(dev, PCI_SUBORDINATE_BUS, nr, 1);
 899     while (!pci_bus_is_root(pci_get_bus(dev))) {
 900         dev = pci_get_bus(dev)->parent_dev;
 901
 902         old_nr = pci_default_read_config(dev, PCI_SUBORDINATE_BUS, 1);
 903         if (old_nr < nr) {
 904             pci_default_write_config(dev, PCI_SUBORDINATE_BUS, nr, 1);
 905         }
 906     }
 907 }
 908
 909 static void s390_pcihost_plug(HotplugHandler *hotplug_dev, DeviceState *dev,
 910                               Error **errp)
 911 {
 912     S390pciState *s = S390_PCI_HOST_BRIDGE(hotplug_dev);
 913     PCIDevice *pdev = NULL;
 914     S390PCIBusDevice *pbdev = NULL;
 915
 916     if (object_dynamic_cast(OBJECT(dev), TYPE_PCI_BRIDGE)) {
 917         PCIBridge *pb = PCI_BRIDGE(dev);
 918
 919         pdev = PCI_DEVICE(dev);
 920         pci_bridge_map_irq(pb, dev->id, s390_pci_map_irq);
 921         pci_setup_iommu(&pb->sec_bus, s390_pci_dma_iommu, s);
 922
 923         qbus_set_hotplug_handler(BUS(&pb->sec_bus), OBJECT(s), errp);
 924
 925         if (dev->hotplugged) {
 926             pci_default_write_config(pdev, PCI_PRIMARY_BUS,
 927                                      pci_dev_bus_num(pdev), 1);
 928             s->bus_no += 1;
 929             pci_default_write_config(pdev, PCI_SECONDARY_BUS, s->bus_no, 1);
 930
 931             s390_pci_update_subordinate(pdev, s->bus_no);
 932         }
 933     } else if (object_dynamic_cast(OBJECT(dev), TYPE_PCI_DEVICE)) {
 934         pdev = PCI_DEVICE(dev);
 935
 936         if (!dev->id) {
 937             /* In the case the PCI device does not define an id */
 938             /* we generate one based on the PCI address         */
 939             dev->id = g_strdup_printf("auto_%02x:%02x.%01x",
 940                                       pci_dev_bus_num(pdev),
 941                                       PCI_SLOT(pdev->devfn),
 942                                       PCI_FUNC(pdev->devfn));
 943         }
 944
 945         pbdev = s390_pci_find_dev_by_target(s, dev->id);
 946         if (!pbdev) {
 947             pbdev = s390_pci_device_new(s, dev->id, errp);
 948             if (!pbdev) {
 949                 return;
 950             }
 951         }
 952
 953         if (object_dynamic_cast(OBJECT(dev), "vfio-pci")) {
 954             pbdev->fh |= FH_SHM_VFIO;
 955         } else {
 956             pbdev->fh |= FH_SHM_EMUL;
 957         }
 958
 959         pbdev->pdev = pdev;
 960         pbdev->iommu = s390_pci_get_iommu(s, pci_get_bus(pdev), pdev->devfn);
 961         pbdev->iommu->pbdev = pbdev;
 962         pbdev->state = ZPCI_FS_DISABLED;
 963
 964         if (s390_pci_msix_init(pbdev)) {
 965             error_setg(errp, "MSI-X support is mandatory "
 966                        "in the S390 architecture");
 967             return;
 968         }
 969
 970         if (dev->hotplugged) {
 971             s390_pci_generate_plug_event(HP_EVENT_TO_CONFIGURED ,
 972                                          pbdev->fh, pbdev->fid);
 973         }
 974     } else if (object_dynamic_cast(OBJECT(dev), TYPE_S390_PCI_DEVICE)) {
 975         pbdev = S390_PCI_DEVICE(dev);
 976
 977         /* the allocated idx is actually getting used */
 978         s->next_idx = (pbdev->idx + 1) & FH_MASK_INDEX;
 979         pbdev->fh = pbdev->idx;
 980         QTAILQ_INSERT_TAIL(&s->zpci_devs, pbdev, link);
 981         g_hash_table_insert(s->zpci_table, &pbdev->idx, pbdev);
 982     } else {
 983         g_assert_not_reached();
 984     }
 985 }
 986
 987 static void s390_pcihost_unplug(HotplugHandler *hotplug_dev, DeviceState *dev,
 988                                 Error **errp)
 989 {
 990     S390pciState *s = S390_PCI_HOST_BRIDGE(hotplug_dev);
 991     S390PCIBusDevice *pbdev = NULL;
 992
 993     if (object_dynamic_cast(OBJECT(dev), TYPE_PCI_DEVICE)) {
 994         PCIDevice *pci_dev = PCI_DEVICE(dev);
 995         PCIBus *bus;
 996         int32_t devfn;
 997
 998         pbdev = s390_pci_find_dev_by_pci(s, PCI_DEVICE(dev));
 999         g_assert(pbdev);
1000
1001         s390_pci_generate_plug_event(HP_EVENT_STANDBY_TO_RESERVED,
1002                                      pbdev->fh, pbdev->fid);
1003         bus = pci_get_bus(pci_dev);
1004         devfn = pci_dev->devfn;
1005         object_property_set_bool(OBJECT(dev), false, "realized", NULL);
1006
1007         s390_pci_msix_free(pbdev);
1008         s390_pci_iommu_free(s, bus, devfn);
1009         pbdev->pdev = NULL;
1010         pbdev->state = ZPCI_FS_RESERVED;
1011     } else if (object_dynamic_cast(OBJECT(dev), TYPE_S390_PCI_DEVICE)) {
1012         pbdev = S390_PCI_DEVICE(dev);
1013         pbdev->fid = 0;
1014         QTAILQ_REMOVE(&s->zpci_devs, pbdev, link);
1015         g_hash_table_remove(s->zpci_table, &pbdev->idx);
1016         object_property_set_bool(OBJECT(dev), false, "realized", NULL);
1017     }
1018 }
1019
1020 static void s390_pcihost_unplug_request(HotplugHandler *hotplug_dev,
1021                                         DeviceState *dev,
1022                                         Error **errp)
1023 {
1024     S390pciState *s = S390_PCI_HOST_BRIDGE(hotplug_dev);
1025     S390PCIBusDevice *pbdev;
1026
1027     if (object_dynamic_cast(OBJECT(dev), TYPE_PCI_BRIDGE)) {
1028         error_setg(errp, "PCI bridge hot unplug currently not supported");
1029     } else if (object_dynamic_cast(OBJECT(dev), TYPE_PCI_DEVICE)) {
1030         /*
1031          * Redirect the unplug request to the zPCI device and remember that
1032          * we've checked the PCI device already (to prevent endless recursion).
1033          */
1034         pbdev = s390_pci_find_dev_by_pci(s, PCI_DEVICE(dev));
1035         g_assert(pbdev);
1036         pbdev->pci_unplug_request_processed = true;
1037         qdev_unplug(DEVICE(pbdev), errp);
1038     } else if (object_dynamic_cast(OBJECT(dev), TYPE_S390_PCI_DEVICE)) {
1039         pbdev = S390_PCI_DEVICE(dev);
1040
1041         /*
1042          * If unplug was initially requested for the zPCI device, we
1043          * first have to redirect to the PCI device, which will in return
1044          * redirect back to us after performing its checks (if the request
1045          * is not blocked, e.g. because it's a PCI bridge).
1046          */
1047         if (pbdev->pdev && !pbdev->pci_unplug_request_processed) {
1048             qdev_unplug(DEVICE(pbdev->pdev), errp);
1049             return;
1050         }
1051         pbdev->pci_unplug_request_processed = false;
1052
1053         switch (pbdev->state) {
1054         case ZPCI_FS_STANDBY:
1055         case ZPCI_FS_RESERVED:
1056             s390_pci_perform_unplug(pbdev);
1057             break;
1058         default:
1059             /*
1060              * Allow to send multiple requests, e.g. if the guest crashed
1061              * before releasing the device, we would not be able to send
1062              * another request to the same VM (e.g. fresh OS).
1063              */
1064             pbdev->unplug_requested = true;
1065             s390_pci_generate_plug_event(HP_EVENT_DECONFIGURE_REQUEST,
1066                                          pbdev->fh, pbdev->fid);
1067         }
1068     } else {
1069         g_assert_not_reached();
1070     }
1071 }
1072
1073 static void s390_pci_enumerate_bridge(PCIBus *bus, PCIDevice *pdev,
1074                                       void *opaque)
1075 {
1076     S390pciState *s = opaque;
1077     PCIBus *sec_bus = NULL;
1078
1079     if ((pci_default_read_config(pdev, PCI_HEADER_TYPE, 1) !=
1080          PCI_HEADER_TYPE_BRIDGE)) {
1081         return;
1082     }
1083
1084     (s->bus_no)++;
1085     pci_default_write_config(pdev, PCI_PRIMARY_BUS, pci_dev_bus_num(pdev), 1);
1086     pci_default_write_config(pdev, PCI_SECONDARY_BUS, s->bus_no, 1);
1087     pci_default_write_config(pdev, PCI_SUBORDINATE_BUS, s->bus_no, 1);
1088
1089     sec_bus = pci_bridge_get_sec_bus(PCI_BRIDGE(pdev));
1090     if (!sec_bus) {
1091         return;
1092     }
1093
1094     /* Assign numbers to all child bridges. The last is the highest number. */
1095     pci_for_each_device(sec_bus, pci_bus_num(sec_bus),
1096                         s390_pci_enumerate_bridge, s);
1097     pci_default_write_config(pdev, PCI_SUBORDINATE_BUS, s->bus_no, 1);
1098 }
1099
1100 static void s390_pcihost_reset(DeviceState *dev)
1101 {
1102     S390pciState *s = S390_PCI_HOST_BRIDGE(dev);
1103     PCIBus *bus = s->parent_obj.bus;
1104     S390PCIBusDevice *pbdev, *next;
1105
1106     /* Process all pending unplug requests */
1107     QTAILQ_FOREACH_SAFE(pbdev, &s->zpci_devs, link, next) {
1108         if (pbdev->unplug_requested) {
1109             if (pbdev->summary_ind) {
1110                 pci_dereg_irqs(pbdev);
1111             }
1112             if (pbdev->iommu->enabled) {
1113                 pci_dereg_ioat(pbdev->iommu);
1114             }
1115             pbdev->state = ZPCI_FS_STANDBY;
1116             s390_pci_perform_unplug(pbdev);
1117         }
1118     }
1119
1120     /*
1121      * When resetting a PCI bridge, the assigned numbers are set to 0. So
1122      * on every system reset, we also have to reassign numbers.
1123      */
1124     s->bus_no = 0;
1125     pci_for_each_device(bus, pci_bus_num(bus), s390_pci_enumerate_bridge, s);
1126 }
1127
1128 static void s390_pcihost_class_init(ObjectClass *klass, void *data)
1129 {
1130     DeviceClass *dc = DEVICE_CLASS(klass);
1131     HotplugHandlerClass *hc = HOTPLUG_HANDLER_CLASS(klass);
1132
1133     dc->reset = s390_pcihost_reset;
1134     dc->realize = s390_pcihost_realize;
1135     hc->pre_plug = s390_pcihost_pre_plug;
1136     hc->plug = s390_pcihost_plug;
1137     hc->unplug_request = s390_pcihost_unplug_request;
1138     hc->unplug = s390_pcihost_unplug;
1139     msi_nonbroken = true;
1140 }
1141
1142 static const TypeInfo s390_pcihost_info = {
1143     .name          = TYPE_S390_PCI_HOST_BRIDGE,
1144     .parent        = TYPE_PCI_HOST_BRIDGE,
1145     .instance_size = sizeof(S390pciState),
1146     .class_init    = s390_pcihost_class_init,
1147     .interfaces = (InterfaceInfo[]) {
1148         { TYPE_HOTPLUG_HANDLER },
1149         { }
1150     }
1151 };
1152
1153 static const TypeInfo s390_pcibus_info = {
1154     .name = TYPE_S390_PCI_BUS,
1155     .parent = TYPE_BUS,
1156     .instance_size = sizeof(S390PCIBus),
1157 };
1158
1159 static uint16_t s390_pci_generate_uid(S390pciState *s)
1160 {
1161     uint16_t uid = 0;
1162
1163     do {
1164         uid++;
1165         if (!s390_pci_find_dev_by_uid(s, uid)) {
1166             return uid;
1167         }
1168     } while (uid < ZPCI_MAX_UID);
1169
1170     return UID_UNDEFINED;
1171 }
1172
1173 static uint32_t s390_pci_generate_fid(S390pciState *s, Error **errp)
1174 {
1175     uint32_t fid = 0;
1176
1177     do {
1178         if (!s390_pci_find_dev_by_fid(s, fid)) {
1179             return fid;
1180         }
1181     } while (fid++ != ZPCI_MAX_FID);
1182
1183     error_setg(errp, "no free fid could be found");
1184     return 0;
1185 }
1186
1187 static void s390_pci_device_realize(DeviceState *dev, Error **errp)
1188 {
1189     S390PCIBusDevice *zpci = S390_PCI_DEVICE(dev);
1190     S390pciState *s = s390_get_phb();
1191
1192     if (!zpci->target) {
1193         error_setg(errp, "target must be defined");
1194         return;
1195     }
1196
1197     if (s390_pci_find_dev_by_target(s, zpci->target)) {
1198         error_setg(errp, "target %s already has an associated zpci device",
1199                    zpci->target);
1200         return;
1201     }
1202
1203     if (zpci->uid == UID_UNDEFINED) {
1204         zpci->uid = s390_pci_generate_uid(s);
1205         if (!zpci->uid) {
1206             error_setg(errp, "no free uid could be found");
1207             return;
1208         }
1209     } else if (s390_pci_find_dev_by_uid(s, zpci->uid)) {
1210         error_setg(errp, "uid %u already in use", zpci->uid);
1211         return;
1212     }
1213
1214     if (!zpci->fid_defined) {
1215         Error *local_error = NULL;
1216
1217         zpci->fid = s390_pci_generate_fid(s, &local_error);
1218         if (local_error) {
1219             error_propagate(errp, local_error);
1220             return;
1221         }
1222     } else if (s390_pci_find_dev_by_fid(s, zpci->fid)) {
1223         error_setg(errp, "fid %u already in use", zpci->fid);
1224         return;
1225     }
1226
1227     zpci->state = ZPCI_FS_RESERVED;
1228     zpci->fmb.format = ZPCI_FMB_FORMAT;
1229 }
1230
1231 static void s390_pci_device_reset(DeviceState *dev)
1232 {
1233     S390PCIBusDevice *pbdev = S390_PCI_DEVICE(dev);
1234
1235     switch (pbdev->state) {
1236     case ZPCI_FS_RESERVED:
1237         return;
1238     case ZPCI_FS_STANDBY:
1239         break;
1240     default:
1241         pbdev->fh &= ~FH_MASK_ENABLE;
1242         pbdev->state = ZPCI_FS_DISABLED;
1243         break;
1244     }
1245
1246     if (pbdev->summary_ind) {
1247         pci_dereg_irqs(pbdev);
1248     }
1249     if (pbdev->iommu->enabled) {
1250         pci_dereg_ioat(pbdev->iommu);
1251     }
1252
1253     fmb_timer_free(pbdev);
1254 }
1255
1256 static void s390_pci_get_fid(Object *obj, Visitor *v, const char *name,
1257                          void *opaque, Error **errp)
1258 {
1259     Property *prop = opaque;
1260     uint32_t *ptr = qdev_get_prop_ptr(DEVICE(obj), prop);
1261
1262     visit_type_uint32(v, name, ptr, errp);
1263 }
1264
1265 static void s390_pci_set_fid(Object *obj, Visitor *v, const char *name,
1266                          void *opaque, Error **errp)
1267 {
1268     DeviceState *dev = DEVICE(obj);
1269     S390PCIBusDevice *zpci = S390_PCI_DEVICE(obj);
1270     Property *prop = opaque;
1271     uint32_t *ptr = qdev_get_prop_ptr(dev, prop);
1272
1273     if (dev->realized) {
1274         qdev_prop_set_after_realize(dev, name, errp);
1275         return;
1276     }
1277
1278     visit_type_uint32(v, name, ptr, errp);
1279     zpci->fid_defined = true;
1280 }
1281
1282 static const PropertyInfo s390_pci_fid_propinfo = {
1283     .name = "zpci_fid",
1284     .get = s390_pci_get_fid,
1285     .set = s390_pci_set_fid,
1286 };
1287
1288 #define DEFINE_PROP_S390_PCI_FID(_n, _s, _f) \
1289     DEFINE_PROP(_n, _s, _f, s390_pci_fid_propinfo, uint32_t)
1290
1291 static Property s390_pci_device_properties[] = {
1292     DEFINE_PROP_UINT16("uid", S390PCIBusDevice, uid, UID_UNDEFINED),
1293     DEFINE_PROP_S390_PCI_FID("fid", S390PCIBusDevice, fid),
1294     DEFINE_PROP_STRING("target", S390PCIBusDevice, target),
1295     DEFINE_PROP_END_OF_LIST(),
1296 };
1297
1298 static const VMStateDescription s390_pci_device_vmstate = {
1299     .name = TYPE_S390_PCI_DEVICE,
1300     /*
1301      * TODO: add state handling here, so migration works at least with
1302      * emulated pci devices on s390x
1303      */
1304     .unmigratable = 1,
1305 };
1306
1307 static void s390_pci_device_class_init(ObjectClass *klass, void *data)
1308 {
1309     DeviceClass *dc = DEVICE_CLASS(klass);
1310
1311     dc->desc = "zpci device";
1312     set_bit(DEVICE_CATEGORY_MISC, dc->categories);
1313     dc->reset = s390_pci_device_reset;
1314     dc->bus_type = TYPE_S390_PCI_BUS;
1315     dc->realize = s390_pci_device_realize;
1316     dc->props = s390_pci_device_properties;
1317     dc->vmsd = &s390_pci_device_vmstate;
1318 }
1319
1320 static const TypeInfo s390_pci_device_info = {
1321     .name = TYPE_S390_PCI_DEVICE,
1322     .parent = TYPE_DEVICE,
1323     .instance_size = sizeof(S390PCIBusDevice),
1324     .class_init = s390_pci_device_class_init,
1325 };
1326
1327 static TypeInfo s390_pci_iommu_info = {
1328     .name = TYPE_S390_PCI_IOMMU,
1329     .parent = TYPE_OBJECT,
1330     .instance_size = sizeof(S390PCIIOMMU),
1331 };
1332
1333 static void s390_iommu_memory_region_class_init(ObjectClass *klass, void *data)
1334 {
1335     IOMMUMemoryRegionClass *imrc = IOMMU_MEMORY_REGION_CLASS(klass);
1336
1337     imrc->translate = s390_translate_iommu;
1338     imrc->replay = s390_pci_iommu_replay;
1339 }
1340
1341 static const TypeInfo s390_iommu_memory_region_info = {
1342     .parent = TYPE_IOMMU_MEMORY_REGION,
1343     .name = TYPE_S390_IOMMU_MEMORY_REGION,
1344     .class_init = s390_iommu_memory_region_class_init,
1345 };
1346
1347 static void s390_pci_register_types(void)
1348 {
1349     type_register_static(&s390_pcihost_info);
1350     type_register_static(&s390_pcibus_info);
1351     type_register_static(&s390_pci_device_info);
1352     type_register_static(&s390_pci_iommu_info);
1353     type_register_static(&s390_iommu_memory_region_info);
1354 }
1355
1356 type_init(s390_pci_register_types)