hw/s390x/s390-pci-inst.c

   1 /*
   2  * s390 PCI instructions
   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 "cpu.h"
  16 #include "s390-pci-inst.h"
  17 #include "s390-pci-bus.h"
  18 #include "exec/memop.h"
  19 #include "exec/memory-internal.h"
  20 #include "qemu/error-report.h"
  21 #include "sysemu/hw_accel.h"
  22 #include "hw/s390x/tod.h"
  23
  24 #ifndef DEBUG_S390PCI_INST
  25 #define DEBUG_S390PCI_INST  0
  26 #endif
  27
  28 #define DPRINTF(fmt, ...)                                          \
  29     do {                                                           \
  30         if (DEBUG_S390PCI_INST) {                                  \
  31             fprintf(stderr, "s390pci-inst: " fmt, ## __VA_ARGS__); \
  32         }                                                          \
  33     } while (0)
  34
  35 static void s390_set_status_code(CPUS390XState *env,
  36                                  uint8_t r, uint64_t status_code)
  37 {
  38     env->regs[r] &= ~0xff000000ULL;
  39     env->regs[r] |= (status_code & 0xff) << 24;
  40 }
  41
  42 static int list_pci(ClpReqRspListPci *rrb, uint8_t *cc)
  43 {
  44     S390PCIBusDevice *pbdev = NULL;
  45     S390pciState *s = s390_get_phb();
  46     uint32_t res_code, initial_l2, g_l2;
  47     int rc, i;
  48     uint64_t resume_token;
  49
  50     rc = 0;
  51     if (lduw_p(&rrb->request.hdr.len) != 32) {
  52         res_code = CLP_RC_LEN;
  53         rc = -EINVAL;
  54         goto out;
  55     }
  56
  57     if ((ldl_p(&rrb->request.fmt) & CLP_MASK_FMT) != 0) {
  58         res_code = CLP_RC_FMT;
  59         rc = -EINVAL;
  60         goto out;
  61     }
  62
  63     if ((ldl_p(&rrb->request.fmt) & ~CLP_MASK_FMT) != 0 ||
  64         ldq_p(&rrb->request.reserved1) != 0) {
  65         res_code = CLP_RC_RESNOT0;
  66         rc = -EINVAL;
  67         goto out;
  68     }
  69
  70     resume_token = ldq_p(&rrb->request.resume_token);
  71
  72     if (resume_token) {
  73         pbdev = s390_pci_find_dev_by_idx(s, resume_token);
  74         if (!pbdev) {
  75             res_code = CLP_RC_LISTPCI_BADRT;
  76             rc = -EINVAL;
  77             goto out;
  78         }
  79     } else {
  80         pbdev = s390_pci_find_next_avail_dev(s, NULL);
  81     }
  82
  83     if (lduw_p(&rrb->response.hdr.len) < 48) {
  84         res_code = CLP_RC_8K;
  85         rc = -EINVAL;
  86         goto out;
  87     }
  88
  89     initial_l2 = lduw_p(&rrb->response.hdr.len);
  90     if ((initial_l2 - LIST_PCI_HDR_LEN) % sizeof(ClpFhListEntry)
  91         != 0) {
  92         res_code = CLP_RC_LEN;
  93         rc = -EINVAL;
  94         *cc = 3;
  95         goto out;
  96     }
  97
  98     stl_p(&rrb->response.fmt, 0);
  99     stq_p(&rrb->response.reserved1, 0);
 100     stl_p(&rrb->response.mdd, FH_MASK_SHM);
 101     stw_p(&rrb->response.max_fn, PCI_MAX_FUNCTIONS);
 102     rrb->response.flags = UID_CHECKING_ENABLED;
 103     rrb->response.entry_size = sizeof(ClpFhListEntry);
 104
 105     i = 0;
 106     g_l2 = LIST_PCI_HDR_LEN;
 107     while (g_l2 < initial_l2 && pbdev) {
 108         stw_p(&rrb->response.fh_list[i].device_id,
 109             pci_get_word(pbdev->pdev->config + PCI_DEVICE_ID));
 110         stw_p(&rrb->response.fh_list[i].vendor_id,
 111             pci_get_word(pbdev->pdev->config + PCI_VENDOR_ID));
 112         /* Ignore RESERVED devices. */
 113         stl_p(&rrb->response.fh_list[i].config,
 114             pbdev->state == ZPCI_FS_STANDBY ? 0 : 1 << 31);
 115         stl_p(&rrb->response.fh_list[i].fid, pbdev->fid);
 116         stl_p(&rrb->response.fh_list[i].fh, pbdev->fh);
 117
 118         g_l2 += sizeof(ClpFhListEntry);
 119         /* Add endian check for DPRINTF? */
 120         DPRINTF("g_l2 %d vendor id 0x%x device id 0x%x fid 0x%x fh 0x%x\n",
 121                 g_l2,
 122                 lduw_p(&rrb->response.fh_list[i].vendor_id),
 123                 lduw_p(&rrb->response.fh_list[i].device_id),
 124                 ldl_p(&rrb->response.fh_list[i].fid),
 125                 ldl_p(&rrb->response.fh_list[i].fh));
 126         pbdev = s390_pci_find_next_avail_dev(s, pbdev);
 127         i++;
 128     }
 129
 130     if (!pbdev) {
 131         resume_token = 0;
 132     } else {
 133         resume_token = pbdev->fh & FH_MASK_INDEX;
 134     }
 135     stq_p(&rrb->response.resume_token, resume_token);
 136     stw_p(&rrb->response.hdr.len, g_l2);
 137     stw_p(&rrb->response.hdr.rsp, CLP_RC_OK);
 138 out:
 139     if (rc) {
 140         DPRINTF("list pci failed rc 0x%x\n", rc);
 141         stw_p(&rrb->response.hdr.rsp, res_code);
 142     }
 143     return rc;
 144 }
 145
 146 int clp_service_call(S390CPU *cpu, uint8_t r2, uintptr_t ra)
 147 {
 148     ClpReqHdr *reqh;
 149     ClpRspHdr *resh;
 150     S390PCIBusDevice *pbdev;
 151     uint32_t req_len;
 152     uint32_t res_len;
 153     uint8_t buffer[4096 * 2];
 154     uint8_t cc = 0;
 155     CPUS390XState *env = &cpu->env;
 156     S390pciState *s = s390_get_phb();
 157     int i;
 158
 159     if (env->psw.mask & PSW_MASK_PSTATE) {
 160         s390_program_interrupt(env, PGM_PRIVILEGED, 4, ra);
 161         return 0;
 162     }
 163
 164     if (s390_cpu_virt_mem_read(cpu, env->regs[r2], r2, buffer, sizeof(*reqh))) {
 165         s390_cpu_virt_mem_handle_exc(cpu, ra);
 166         return 0;
 167     }
 168     reqh = (ClpReqHdr *)buffer;
 169     req_len = lduw_p(&reqh->len);
 170     if (req_len < 16 || req_len > 8184 || (req_len % 8 != 0)) {
 171         s390_program_interrupt(env, PGM_OPERAND, 4, ra);
 172         return 0;
 173     }
 174
 175     if (s390_cpu_virt_mem_read(cpu, env->regs[r2], r2, buffer,
 176                                req_len + sizeof(*resh))) {
 177         s390_cpu_virt_mem_handle_exc(cpu, ra);
 178         return 0;
 179     }
 180     resh = (ClpRspHdr *)(buffer + req_len);
 181     res_len = lduw_p(&resh->len);
 182     if (res_len < 8 || res_len > 8176 || (res_len % 8 != 0)) {
 183         s390_program_interrupt(env, PGM_OPERAND, 4, ra);
 184         return 0;
 185     }
 186     if ((req_len + res_len) > 8192) {
 187         s390_program_interrupt(env, PGM_OPERAND, 4, ra);
 188         return 0;
 189     }
 190
 191     if (s390_cpu_virt_mem_read(cpu, env->regs[r2], r2, buffer,
 192                                req_len + res_len)) {
 193         s390_cpu_virt_mem_handle_exc(cpu, ra);
 194         return 0;
 195     }
 196
 197     if (req_len != 32) {
 198         stw_p(&resh->rsp, CLP_RC_LEN);
 199         goto out;
 200     }
 201
 202     switch (lduw_p(&reqh->cmd)) {
 203     case CLP_LIST_PCI: {
 204         ClpReqRspListPci *rrb = (ClpReqRspListPci *)buffer;
 205         list_pci(rrb, &cc);
 206         break;
 207     }
 208     case CLP_SET_PCI_FN: {
 209         ClpReqSetPci *reqsetpci = (ClpReqSetPci *)reqh;
 210         ClpRspSetPci *ressetpci = (ClpRspSetPci *)resh;
 211
 212         pbdev = s390_pci_find_dev_by_fh(s, ldl_p(&reqsetpci->fh));
 213         if (!pbdev) {
 214                 stw_p(&ressetpci->hdr.rsp, CLP_RC_SETPCIFN_FH);
 215                 goto out;
 216         }
 217
 218         switch (reqsetpci->oc) {
 219         case CLP_SET_ENABLE_PCI_FN:
 220             switch (reqsetpci->ndas) {
 221             case 0:
 222                 stw_p(&ressetpci->hdr.rsp, CLP_RC_SETPCIFN_DMAAS);
 223                 goto out;
 224             case 1:
 225                 break;
 226             default:
 227                 stw_p(&ressetpci->hdr.rsp, CLP_RC_SETPCIFN_RES);
 228                 goto out;
 229             }
 230
 231             if (pbdev->fh & FH_MASK_ENABLE) {
 232                 stw_p(&ressetpci->hdr.rsp, CLP_RC_SETPCIFN_FHOP);
 233                 goto out;
 234             }
 235
 236             pbdev->fh |= FH_MASK_ENABLE;
 237             pbdev->state = ZPCI_FS_ENABLED;
 238             stl_p(&ressetpci->fh, pbdev->fh);
 239             stw_p(&ressetpci->hdr.rsp, CLP_RC_OK);
 240             break;
 241         case CLP_SET_DISABLE_PCI_FN:
 242             if (!(pbdev->fh & FH_MASK_ENABLE)) {
 243                 stw_p(&ressetpci->hdr.rsp, CLP_RC_SETPCIFN_FHOP);
 244                 goto out;
 245             }
 246             device_reset(DEVICE(pbdev));
 247             pbdev->fh &= ~FH_MASK_ENABLE;
 248             pbdev->state = ZPCI_FS_DISABLED;
 249             stl_p(&ressetpci->fh, pbdev->fh);
 250             stw_p(&ressetpci->hdr.rsp, CLP_RC_OK);
 251             break;
 252         default:
 253             DPRINTF("unknown set pci command\n");
 254             stw_p(&ressetpci->hdr.rsp, CLP_RC_SETPCIFN_FHOP);
 255             break;
 256         }
 257         break;
 258     }
 259     case CLP_QUERY_PCI_FN: {
 260         ClpReqQueryPci *reqquery = (ClpReqQueryPci *)reqh;
 261         ClpRspQueryPci *resquery = (ClpRspQueryPci *)resh;
 262
 263         pbdev = s390_pci_find_dev_by_fh(s, ldl_p(&reqquery->fh));
 264         if (!pbdev) {
 265             DPRINTF("query pci no pci dev\n");
 266             stw_p(&resquery->hdr.rsp, CLP_RC_SETPCIFN_FH);
 267             goto out;
 268         }
 269
 270         for (i = 0; i < PCI_BAR_COUNT; i++) {
 271             uint32_t data = pci_get_long(pbdev->pdev->config +
 272                 PCI_BASE_ADDRESS_0 + (i * 4));
 273
 274             stl_p(&resquery->bar[i], data);
 275             resquery->bar_size[i] = pbdev->pdev->io_regions[i].size ?
 276                                     ctz64(pbdev->pdev->io_regions[i].size) : 0;
 277             DPRINTF("bar %d addr 0x%x size 0x%" PRIx64 "barsize 0x%x\n", i,
 278                     ldl_p(&resquery->bar[i]),
 279                     pbdev->pdev->io_regions[i].size,
 280                     resquery->bar_size[i]);
 281         }
 282
 283         stq_p(&resquery->sdma, ZPCI_SDMA_ADDR);
 284         stq_p(&resquery->edma, ZPCI_EDMA_ADDR);
 285         stl_p(&resquery->fid, pbdev->fid);
 286         stw_p(&resquery->pchid, 0);
 287         stw_p(&resquery->ug, 1);
 288         stl_p(&resquery->uid, pbdev->uid);
 289         stw_p(&resquery->hdr.rsp, CLP_RC_OK);
 290         break;
 291     }
 292     case CLP_QUERY_PCI_FNGRP: {
 293         ClpRspQueryPciGrp *resgrp = (ClpRspQueryPciGrp *)resh;
 294         resgrp->fr = 1;
 295         stq_p(&resgrp->dasm, 0);
 296         stq_p(&resgrp->msia, ZPCI_MSI_ADDR);
 297         stw_p(&resgrp->mui, DEFAULT_MUI);
 298         stw_p(&resgrp->i, 128);
 299         stw_p(&resgrp->maxstbl, 128);
 300         resgrp->version = 0;
 301
 302         stw_p(&resgrp->hdr.rsp, CLP_RC_OK);
 303         break;
 304     }
 305     default:
 306         DPRINTF("unknown clp command\n");
 307         stw_p(&resh->rsp, CLP_RC_CMD);
 308         break;
 309     }
 310
 311 out:
 312     if (s390_cpu_virt_mem_write(cpu, env->regs[r2], r2, buffer,
 313                                 req_len + res_len)) {
 314         s390_cpu_virt_mem_handle_exc(cpu, ra);
 315         return 0;
 316     }
 317     setcc(cpu, cc);
 318     return 0;
 319 }
 320
 321 /**
 322  * Swap data contained in s390x big endian registers to little endian
 323  * PCI bars.
 324  *
 325  * @ptr: a pointer to a uint64_t data field
 326  * @len: the length of the valid data, must be 1,2,4 or 8
 327  */
 328 static int zpci_endian_swap(uint64_t *ptr, uint8_t len)
 329 {
 330     uint64_t data = *ptr;
 331
 332     switch (len) {
 333     case 1:
 334         break;
 335     case 2:
 336         data = bswap16(data);
 337         break;
 338     case 4:
 339         data = bswap32(data);
 340         break;
 341     case 8:
 342         data = bswap64(data);
 343         break;
 344     default:
 345         return -EINVAL;
 346     }
 347     *ptr = data;
 348     return 0;
 349 }
 350
 351 static MemoryRegion *s390_get_subregion(MemoryRegion *mr, uint64_t offset,
 352                                         uint8_t len)
 353 {
 354     MemoryRegion *subregion;
 355     uint64_t subregion_size;
 356
 357     QTAILQ_FOREACH(subregion, &mr->subregions, subregions_link) {
 358         subregion_size = int128_get64(subregion->size);
 359         if ((offset >= subregion->addr) &&
 360             (offset + len) <= (subregion->addr + subregion_size)) {
 361             mr = subregion;
 362             break;
 363         }
 364     }
 365     return mr;
 366 }
 367
 368 static MemTxResult zpci_read_bar(S390PCIBusDevice *pbdev, uint8_t pcias,
 369                                  uint64_t offset, uint64_t *data, uint8_t len)
 370 {
 371     MemoryRegion *mr;
 372
 373     mr = pbdev->pdev->io_regions[pcias].memory;
 374     mr = s390_get_subregion(mr, offset, len);
 375     offset -= mr->addr;
 376     return memory_region_dispatch_read(mr, offset, data,
 377                                        size_memop(len) | MO_BE,
 378                                        MEMTXATTRS_UNSPECIFIED);
 379 }
 380
 381 int pcilg_service_call(S390CPU *cpu, uint8_t r1, uint8_t r2, uintptr_t ra)
 382 {
 383     CPUS390XState *env = &cpu->env;
 384     S390PCIBusDevice *pbdev;
 385     uint64_t offset;
 386     uint64_t data;
 387     MemTxResult result;
 388     uint8_t len;
 389     uint32_t fh;
 390     uint8_t pcias;
 391
 392     if (env->psw.mask & PSW_MASK_PSTATE) {
 393         s390_program_interrupt(env, PGM_PRIVILEGED, 4, ra);
 394         return 0;
 395     }
 396
 397     if (r2 & 0x1) {
 398         s390_program_interrupt(env, PGM_SPECIFICATION, 4, ra);
 399         return 0;
 400     }
 401
 402     fh = env->regs[r2] >> 32;
 403     pcias = (env->regs[r2] >> 16) & 0xf;
 404     len = env->regs[r2] & 0xf;
 405     offset = env->regs[r2 + 1];
 406
 407     if (!(fh & FH_MASK_ENABLE)) {
 408         setcc(cpu, ZPCI_PCI_LS_INVAL_HANDLE);
 409         return 0;
 410     }
 411
 412     pbdev = s390_pci_find_dev_by_fh(s390_get_phb(), fh);
 413     if (!pbdev) {
 414         DPRINTF("pcilg no pci dev\n");
 415         setcc(cpu, ZPCI_PCI_LS_INVAL_HANDLE);
 416         return 0;
 417     }
 418
 419     switch (pbdev->state) {
 420     case ZPCI_FS_PERMANENT_ERROR:
 421     case ZPCI_FS_ERROR:
 422         setcc(cpu, ZPCI_PCI_LS_ERR);
 423         s390_set_status_code(env, r2, ZPCI_PCI_ST_BLOCKED);
 424         return 0;
 425     default:
 426         break;
 427     }
 428
 429     switch (pcias) {
 430     case ZPCI_IO_BAR_MIN...ZPCI_IO_BAR_MAX:
 431         if (!len || (len > (8 - (offset & 0x7)))) {
 432             s390_program_interrupt(env, PGM_OPERAND, 4, ra);
 433             return 0;
 434         }
 435         result = zpci_read_bar(pbdev, pcias, offset, &data, len);
 436         if (result != MEMTX_OK) {
 437             s390_program_interrupt(env, PGM_OPERAND, 4, ra);
 438             return 0;
 439         }
 440         break;
 441     case ZPCI_CONFIG_BAR:
 442         if (!len || (len > (4 - (offset & 0x3))) || len == 3) {
 443             s390_program_interrupt(env, PGM_OPERAND, 4, ra);
 444             return 0;
 445         }
 446         data =  pci_host_config_read_common(
 447                    pbdev->pdev, offset, pci_config_size(pbdev->pdev), len);
 448
 449         if (zpci_endian_swap(&data, len)) {
 450             s390_program_interrupt(env, PGM_OPERAND, 4, ra);
 451             return 0;
 452         }
 453         break;
 454     default:
 455         DPRINTF("pcilg invalid space\n");
 456         setcc(cpu, ZPCI_PCI_LS_ERR);
 457         s390_set_status_code(env, r2, ZPCI_PCI_ST_INVAL_AS);
 458         return 0;
 459     }
 460
 461     pbdev->fmb.counter[ZPCI_FMB_CNT_LD]++;
 462
 463     env->regs[r1] = data;
 464     setcc(cpu, ZPCI_PCI_LS_OK);
 465     return 0;
 466 }
 467
 468 static MemTxResult zpci_write_bar(S390PCIBusDevice *pbdev, uint8_t pcias,
 469                                   uint64_t offset, uint64_t data, uint8_t len)
 470 {
 471     MemoryRegion *mr;
 472
 473     mr = pbdev->pdev->io_regions[pcias].memory;
 474     mr = s390_get_subregion(mr, offset, len);
 475     offset -= mr->addr;
 476     return memory_region_dispatch_write(mr, offset, data,
 477                                         size_memop(len) | MO_BE,
 478                                         MEMTXATTRS_UNSPECIFIED);
 479 }
 480
 481 int pcistg_service_call(S390CPU *cpu, uint8_t r1, uint8_t r2, uintptr_t ra)
 482 {
 483     CPUS390XState *env = &cpu->env;
 484     uint64_t offset, data;
 485     S390PCIBusDevice *pbdev;
 486     MemTxResult result;
 487     uint8_t len;
 488     uint32_t fh;
 489     uint8_t pcias;
 490
 491     if (env->psw.mask & PSW_MASK_PSTATE) {
 492         s390_program_interrupt(env, PGM_PRIVILEGED, 4, ra);
 493         return 0;
 494     }
 495
 496     if (r2 & 0x1) {
 497         s390_program_interrupt(env, PGM_SPECIFICATION, 4, ra);
 498         return 0;
 499     }
 500
 501     fh = env->regs[r2] >> 32;
 502     pcias = (env->regs[r2] >> 16) & 0xf;
 503     len = env->regs[r2] & 0xf;
 504     offset = env->regs[r2 + 1];
 505     data = env->regs[r1];
 506
 507     if (!(fh & FH_MASK_ENABLE)) {
 508         setcc(cpu, ZPCI_PCI_LS_INVAL_HANDLE);
 509         return 0;
 510     }
 511
 512     pbdev = s390_pci_find_dev_by_fh(s390_get_phb(), fh);
 513     if (!pbdev) {
 514         DPRINTF("pcistg no pci dev\n");
 515         setcc(cpu, ZPCI_PCI_LS_INVAL_HANDLE);
 516         return 0;
 517     }
 518
 519     switch (pbdev->state) {
 520     /* ZPCI_FS_RESERVED, ZPCI_FS_STANDBY and ZPCI_FS_DISABLED
 521      * are already covered by the FH_MASK_ENABLE check above
 522      */
 523     case ZPCI_FS_PERMANENT_ERROR:
 524     case ZPCI_FS_ERROR:
 525         setcc(cpu, ZPCI_PCI_LS_ERR);
 526         s390_set_status_code(env, r2, ZPCI_PCI_ST_BLOCKED);
 527         return 0;
 528     default:
 529         break;
 530     }
 531
 532     switch (pcias) {
 533         /* A ZPCI PCI card may use any BAR from BAR 0 to BAR 5 */
 534     case ZPCI_IO_BAR_MIN...ZPCI_IO_BAR_MAX:
 535         /* Check length:
 536          * A length of 0 is invalid and length should not cross a double word
 537          */
 538         if (!len || (len > (8 - (offset & 0x7)))) {
 539             s390_program_interrupt(env, PGM_OPERAND, 4, ra);
 540             return 0;
 541         }
 542
 543         result = zpci_write_bar(pbdev, pcias, offset, data, len);
 544         if (result != MEMTX_OK) {
 545             s390_program_interrupt(env, PGM_OPERAND, 4, ra);
 546             return 0;
 547         }
 548         break;
 549     case ZPCI_CONFIG_BAR:
 550         /* ZPCI uses the pseudo BAR number 15 as configuration space */
 551         /* possible access lengths are 1,2,4 and must not cross a word */
 552         if (!len || (len > (4 - (offset & 0x3))) || len == 3) {
 553             s390_program_interrupt(env, PGM_OPERAND, 4, ra);
 554             return 0;
 555         }
 556         /* len = 1,2,4 so we do not need to test */
 557         zpci_endian_swap(&data, len);
 558         pci_host_config_write_common(pbdev->pdev, offset,
 559                                      pci_config_size(pbdev->pdev),
 560                                      data, len);
 561         break;
 562     default:
 563         DPRINTF("pcistg invalid space\n");
 564         setcc(cpu, ZPCI_PCI_LS_ERR);
 565         s390_set_status_code(env, r2, ZPCI_PCI_ST_INVAL_AS);
 566         return 0;
 567     }
 568
 569     pbdev->fmb.counter[ZPCI_FMB_CNT_ST]++;
 570
 571     setcc(cpu, ZPCI_PCI_LS_OK);
 572     return 0;
 573 }
 574
 575 static void s390_pci_update_iotlb(S390PCIIOMMU *iommu, S390IOTLBEntry *entry)
 576 {
 577     S390IOTLBEntry *cache = g_hash_table_lookup(iommu->iotlb, &entry->iova);
 578     IOMMUTLBEntry notify = {
 579         .target_as = &address_space_memory,
 580         .iova = entry->iova,
 581         .translated_addr = entry->translated_addr,
 582         .perm = entry->perm,
 583         .addr_mask = ~PAGE_MASK,
 584     };
 585
 586     if (entry->perm == IOMMU_NONE) {
 587         if (!cache) {
 588             return;
 589         }
 590         g_hash_table_remove(iommu->iotlb, &entry->iova);
 591     } else {
 592         if (cache) {
 593             if (cache->perm == entry->perm &&
 594                 cache->translated_addr == entry->translated_addr) {
 595                 return;
 596             }
 597
 598             notify.perm = IOMMU_NONE;
 599             memory_region_notify_iommu(&iommu->iommu_mr, 0, notify);
 600             notify.perm = entry->perm;
 601         }
 602
 603         cache = g_new(S390IOTLBEntry, 1);
 604         cache->iova = entry->iova;
 605         cache->translated_addr = entry->translated_addr;
 606         cache->len = PAGE_SIZE;
 607         cache->perm = entry->perm;
 608         g_hash_table_replace(iommu->iotlb, &cache->iova, cache);
 609     }
 610
 611     memory_region_notify_iommu(&iommu->iommu_mr, 0, notify);
 612 }
 613
 614 int rpcit_service_call(S390CPU *cpu, uint8_t r1, uint8_t r2, uintptr_t ra)
 615 {
 616     CPUS390XState *env = &cpu->env;
 617     uint32_t fh;
 618     uint16_t error = 0;
 619     S390PCIBusDevice *pbdev;
 620     S390PCIIOMMU *iommu;
 621     S390IOTLBEntry entry;
 622     hwaddr start, end;
 623
 624     if (env->psw.mask & PSW_MASK_PSTATE) {
 625         s390_program_interrupt(env, PGM_PRIVILEGED, 4, ra);
 626         return 0;
 627     }
 628
 629     if (r2 & 0x1) {
 630         s390_program_interrupt(env, PGM_SPECIFICATION, 4, ra);
 631         return 0;
 632     }
 633
 634     fh = env->regs[r1] >> 32;
 635     start = env->regs[r2];
 636     end = start + env->regs[r2 + 1];
 637
 638     pbdev = s390_pci_find_dev_by_fh(s390_get_phb(), fh);
 639     if (!pbdev) {
 640         DPRINTF("rpcit no pci dev\n");
 641         setcc(cpu, ZPCI_PCI_LS_INVAL_HANDLE);
 642         return 0;
 643     }
 644
 645     switch (pbdev->state) {
 646     case ZPCI_FS_RESERVED:
 647     case ZPCI_FS_STANDBY:
 648     case ZPCI_FS_DISABLED:
 649     case ZPCI_FS_PERMANENT_ERROR:
 650         setcc(cpu, ZPCI_PCI_LS_INVAL_HANDLE);
 651         return 0;
 652     case ZPCI_FS_ERROR:
 653         setcc(cpu, ZPCI_PCI_LS_ERR);
 654         s390_set_status_code(env, r1, ZPCI_MOD_ST_ERROR_RECOVER);
 655         return 0;
 656     default:
 657         break;
 658     }
 659
 660     iommu = pbdev->iommu;
 661     if (!iommu->g_iota) {
 662         error = ERR_EVENT_INVALAS;
 663         goto err;
 664     }
 665
 666     if (end < iommu->pba || start > iommu->pal) {
 667         error = ERR_EVENT_OORANGE;
 668         goto err;
 669     }
 670
 671     while (start < end) {
 672         error = s390_guest_io_table_walk(iommu->g_iota, start, &entry);
 673         if (error) {
 674             break;
 675         }
 676
 677         start += entry.len;
 678         while (entry.iova < start && entry.iova < end) {
 679             s390_pci_update_iotlb(iommu, &entry);
 680             entry.iova += PAGE_SIZE;
 681             entry.translated_addr += PAGE_SIZE;
 682         }
 683     }
 684 err:
 685     if (error) {
 686         pbdev->state = ZPCI_FS_ERROR;
 687         setcc(cpu, ZPCI_PCI_LS_ERR);
 688         s390_set_status_code(env, r1, ZPCI_PCI_ST_FUNC_IN_ERR);
 689         s390_pci_generate_error_event(error, pbdev->fh, pbdev->fid, start, 0);
 690     } else {
 691         pbdev->fmb.counter[ZPCI_FMB_CNT_RPCIT]++;
 692         setcc(cpu, ZPCI_PCI_LS_OK);
 693     }
 694     return 0;
 695 }
 696
 697 int pcistb_service_call(S390CPU *cpu, uint8_t r1, uint8_t r3, uint64_t gaddr,
 698                         uint8_t ar, uintptr_t ra)
 699 {
 700     CPUS390XState *env = &cpu->env;
 701     S390PCIBusDevice *pbdev;
 702     MemoryRegion *mr;
 703     MemTxResult result;
 704     uint64_t offset;
 705     int i;
 706     uint32_t fh;
 707     uint8_t pcias;
 708     uint8_t len;
 709     uint8_t buffer[128];
 710
 711     if (env->psw.mask & PSW_MASK_PSTATE) {
 712         s390_program_interrupt(env, PGM_PRIVILEGED, 6, ra);
 713         return 0;
 714     }
 715
 716     fh = env->regs[r1] >> 32;
 717     pcias = (env->regs[r1] >> 16) & 0xf;
 718     len = env->regs[r1] & 0xff;
 719     offset = env->regs[r3];
 720
 721     if (!(fh & FH_MASK_ENABLE)) {
 722         setcc(cpu, ZPCI_PCI_LS_INVAL_HANDLE);
 723         return 0;
 724     }
 725
 726     pbdev = s390_pci_find_dev_by_fh(s390_get_phb(), fh);
 727     if (!pbdev) {
 728         DPRINTF("pcistb no pci dev fh 0x%x\n", fh);
 729         setcc(cpu, ZPCI_PCI_LS_INVAL_HANDLE);
 730         return 0;
 731     }
 732
 733     switch (pbdev->state) {
 734     case ZPCI_FS_PERMANENT_ERROR:
 735     case ZPCI_FS_ERROR:
 736         setcc(cpu, ZPCI_PCI_LS_ERR);
 737         s390_set_status_code(env, r1, ZPCI_PCI_ST_BLOCKED);
 738         return 0;
 739     default:
 740         break;
 741     }
 742
 743     if (pcias > ZPCI_IO_BAR_MAX) {
 744         DPRINTF("pcistb invalid space\n");
 745         setcc(cpu, ZPCI_PCI_LS_ERR);
 746         s390_set_status_code(env, r1, ZPCI_PCI_ST_INVAL_AS);
 747         return 0;
 748     }
 749
 750     /* Verify the address, offset and length */
 751     /* offset must be a multiple of 8 */
 752     if (offset % 8) {
 753         goto specification_error;
 754     }
 755     /* Length must be greater than 8, a multiple of 8 */
 756     /* and not greater than maxstbl */
 757     if ((len <= 8) || (len % 8) || (len > pbdev->maxstbl)) {
 758         goto specification_error;
 759     }
 760     /* Do not cross a 4K-byte boundary */
 761     if (((offset & 0xfff) + len) > 0x1000) {
 762         goto specification_error;
 763     }
 764     /* Guest address must be double word aligned */
 765     if (gaddr & 0x07UL) {
 766         goto specification_error;
 767     }
 768
 769     mr = pbdev->pdev->io_regions[pcias].memory;
 770     mr = s390_get_subregion(mr, offset, len);
 771     offset -= mr->addr;
 772
 773     if (!memory_region_access_valid(mr, offset, len, true,
 774                                     MEMTXATTRS_UNSPECIFIED)) {
 775         s390_program_interrupt(env, PGM_OPERAND, 6, ra);
 776         return 0;
 777     }
 778
 779     if (s390_cpu_virt_mem_read(cpu, gaddr, ar, buffer, len)) {
 780         s390_cpu_virt_mem_handle_exc(cpu, ra);
 781         return 0;
 782     }
 783
 784     for (i = 0; i < len / 8; i++) {
 785         result = memory_region_dispatch_write(mr, offset + i * 8,
 786                                               ldq_p(buffer + i * 8),
 787                                               MO_64, MEMTXATTRS_UNSPECIFIED);
 788         if (result != MEMTX_OK) {
 789             s390_program_interrupt(env, PGM_OPERAND, 6, ra);
 790             return 0;
 791         }
 792     }
 793
 794     pbdev->fmb.counter[ZPCI_FMB_CNT_STB]++;
 795
 796     setcc(cpu, ZPCI_PCI_LS_OK);
 797     return 0;
 798
 799 specification_error:
 800     s390_program_interrupt(env, PGM_SPECIFICATION, 6, ra);
 801     return 0;
 802 }
 803
 804 static int reg_irqs(CPUS390XState *env, S390PCIBusDevice *pbdev, ZpciFib fib)
 805 {
 806     int ret, len;
 807     uint8_t isc = FIB_DATA_ISC(ldl_p(&fib.data));
 808
 809     pbdev->routes.adapter.adapter_id = css_get_adapter_id(
 810                                        CSS_IO_ADAPTER_PCI, isc);
 811     pbdev->summary_ind = get_indicator(ldq_p(&fib.aisb), sizeof(uint64_t));
 812     len = BITS_TO_LONGS(FIB_DATA_NOI(ldl_p(&fib.data))) * sizeof(unsigned long);
 813     pbdev->indicator = get_indicator(ldq_p(&fib.aibv), len);
 814
 815     ret = map_indicator(&pbdev->routes.adapter, pbdev->summary_ind);
 816     if (ret) {
 817         goto out;
 818     }
 819
 820     ret = map_indicator(&pbdev->routes.adapter, pbdev->indicator);
 821     if (ret) {
 822         goto out;
 823     }
 824
 825     pbdev->routes.adapter.summary_addr = ldq_p(&fib.aisb);
 826     pbdev->routes.adapter.summary_offset = FIB_DATA_AISBO(ldl_p(&fib.data));
 827     pbdev->routes.adapter.ind_addr = ldq_p(&fib.aibv);
 828     pbdev->routes.adapter.ind_offset = FIB_DATA_AIBVO(ldl_p(&fib.data));
 829     pbdev->isc = isc;
 830     pbdev->noi = FIB_DATA_NOI(ldl_p(&fib.data));
 831     pbdev->sum = FIB_DATA_SUM(ldl_p(&fib.data));
 832
 833     DPRINTF("reg_irqs adapter id %d\n", pbdev->routes.adapter.adapter_id);
 834     return 0;
 835 out:
 836     release_indicator(&pbdev->routes.adapter, pbdev->summary_ind);
 837     release_indicator(&pbdev->routes.adapter, pbdev->indicator);
 838     pbdev->summary_ind = NULL;
 839     pbdev->indicator = NULL;
 840     return ret;
 841 }
 842
 843 int pci_dereg_irqs(S390PCIBusDevice *pbdev)
 844 {
 845     release_indicator(&pbdev->routes.adapter, pbdev->summary_ind);
 846     release_indicator(&pbdev->routes.adapter, pbdev->indicator);
 847
 848     pbdev->summary_ind = NULL;
 849     pbdev->indicator = NULL;
 850     pbdev->routes.adapter.summary_addr = 0;
 851     pbdev->routes.adapter.summary_offset = 0;
 852     pbdev->routes.adapter.ind_addr = 0;
 853     pbdev->routes.adapter.ind_offset = 0;
 854     pbdev->isc = 0;
 855     pbdev->noi = 0;
 856     pbdev->sum = 0;
 857
 858     DPRINTF("dereg_irqs adapter id %d\n", pbdev->routes.adapter.adapter_id);
 859     return 0;
 860 }
 861
 862 static int reg_ioat(CPUS390XState *env, S390PCIIOMMU *iommu, ZpciFib fib,
 863                     uintptr_t ra)
 864 {
 865     uint64_t pba = ldq_p(&fib.pba);
 866     uint64_t pal = ldq_p(&fib.pal);
 867     uint64_t g_iota = ldq_p(&fib.iota);
 868     uint8_t dt = (g_iota >> 2) & 0x7;
 869     uint8_t t = (g_iota >> 11) & 0x1;
 870
 871     pba &= ~0xfff;
 872     pal |= 0xfff;
 873     if (pba > pal || pba < ZPCI_SDMA_ADDR || pal > ZPCI_EDMA_ADDR) {
 874         s390_program_interrupt(env, PGM_OPERAND, 6, ra);
 875         return -EINVAL;
 876     }
 877
 878     /* currently we only support designation type 1 with translation */
 879     if (!(dt == ZPCI_IOTA_RTTO && t)) {
 880         error_report("unsupported ioat dt %d t %d", dt, t);
 881         s390_program_interrupt(env, PGM_OPERAND, 6, ra);
 882         return -EINVAL;
 883     }
 884
 885     iommu->pba = pba;
 886     iommu->pal = pal;
 887     iommu->g_iota = g_iota;
 888
 889     s390_pci_iommu_enable(iommu);
 890
 891     return 0;
 892 }
 893
 894 void pci_dereg_ioat(S390PCIIOMMU *iommu)
 895 {
 896     s390_pci_iommu_disable(iommu);
 897     iommu->pba = 0;
 898     iommu->pal = 0;
 899     iommu->g_iota = 0;
 900 }
 901
 902 void fmb_timer_free(S390PCIBusDevice *pbdev)
 903 {
 904     if (pbdev->fmb_timer) {
 905         timer_del(pbdev->fmb_timer);
 906         timer_free(pbdev->fmb_timer);
 907         pbdev->fmb_timer = NULL;
 908     }
 909     pbdev->fmb_addr = 0;
 910     memset(&pbdev->fmb, 0, sizeof(ZpciFmb));
 911 }
 912
 913 static int fmb_do_update(S390PCIBusDevice *pbdev, int offset, uint64_t val,
 914                          int len)
 915 {
 916     MemTxResult ret;
 917     uint64_t dst = pbdev->fmb_addr + offset;
 918
 919     switch (len) {
 920     case 8:
 921         address_space_stq_be(&address_space_memory, dst, val,
 922                              MEMTXATTRS_UNSPECIFIED,
 923                              &ret);
 924         break;
 925     case 4:
 926         address_space_stl_be(&address_space_memory, dst, val,
 927                              MEMTXATTRS_UNSPECIFIED,
 928                              &ret);
 929         break;
 930     case 2:
 931         address_space_stw_be(&address_space_memory, dst, val,
 932                              MEMTXATTRS_UNSPECIFIED,
 933                              &ret);
 934         break;
 935     case 1:
 936         address_space_stb(&address_space_memory, dst, val,
 937                           MEMTXATTRS_UNSPECIFIED,
 938                           &ret);
 939         break;
 940     default:
 941         ret = MEMTX_ERROR;
 942         break;
 943     }
 944     if (ret != MEMTX_OK) {
 945         s390_pci_generate_error_event(ERR_EVENT_FMBA, pbdev->fh, pbdev->fid,
 946                                       pbdev->fmb_addr, 0);
 947         fmb_timer_free(pbdev);
 948     }
 949
 950     return ret;
 951 }
 952
 953 static void fmb_update(void *opaque)
 954 {
 955     S390PCIBusDevice *pbdev = opaque;
 956     int64_t t = qemu_clock_get_ms(QEMU_CLOCK_VIRTUAL);
 957     int i;
 958
 959     /* Update U bit */
 960     pbdev->fmb.last_update *= 2;
 961     pbdev->fmb.last_update |= UPDATE_U_BIT;
 962     if (fmb_do_update(pbdev, offsetof(ZpciFmb, last_update),
 963                       pbdev->fmb.last_update,
 964                       sizeof(pbdev->fmb.last_update))) {
 965         return;
 966     }
 967
 968     /* Update FMB sample count */
 969     if (fmb_do_update(pbdev, offsetof(ZpciFmb, sample),
 970                       pbdev->fmb.sample++,
 971                       sizeof(pbdev->fmb.sample))) {
 972         return;
 973     }
 974
 975     /* Update FMB counters */
 976     for (i = 0; i < ZPCI_FMB_CNT_MAX; i++) {
 977         if (fmb_do_update(pbdev, offsetof(ZpciFmb, counter[i]),
 978                           pbdev->fmb.counter[i],
 979                           sizeof(pbdev->fmb.counter[0]))) {
 980             return;
 981         }
 982     }
 983
 984     /* Clear U bit and update the time */
 985     pbdev->fmb.last_update = time2tod(qemu_clock_get_ns(QEMU_CLOCK_VIRTUAL));
 986     pbdev->fmb.last_update *= 2;
 987     if (fmb_do_update(pbdev, offsetof(ZpciFmb, last_update),
 988                       pbdev->fmb.last_update,
 989                       sizeof(pbdev->fmb.last_update))) {
 990         return;
 991     }
 992     timer_mod(pbdev->fmb_timer, t + DEFAULT_MUI);
 993 }
 994
 995 int mpcifc_service_call(S390CPU *cpu, uint8_t r1, uint64_t fiba, uint8_t ar,
 996                         uintptr_t ra)
 997 {
 998     CPUS390XState *env = &cpu->env;
 999     uint8_t oc, dmaas;
1000     uint32_t fh;
1001     ZpciFib fib;
1002     S390PCIBusDevice *pbdev;
1003     uint64_t cc = ZPCI_PCI_LS_OK;
1004
1005     if (env->psw.mask & PSW_MASK_PSTATE) {
1006         s390_program_interrupt(env, PGM_PRIVILEGED, 6, ra);
1007         return 0;
1008     }
1009
1010     oc = env->regs[r1] & 0xff;
1011     dmaas = (env->regs[r1] >> 16) & 0xff;
1012     fh = env->regs[r1] >> 32;
1013
1014     if (fiba & 0x7) {
1015         s390_program_interrupt(env, PGM_SPECIFICATION, 6, ra);
1016         return 0;
1017     }
1018
1019     pbdev = s390_pci_find_dev_by_fh(s390_get_phb(), fh);
1020     if (!pbdev) {
1021         DPRINTF("mpcifc no pci dev fh 0x%x\n", fh);
1022         setcc(cpu, ZPCI_PCI_LS_INVAL_HANDLE);
1023         return 0;
1024     }
1025
1026     switch (pbdev->state) {
1027     case ZPCI_FS_RESERVED:
1028     case ZPCI_FS_STANDBY:
1029     case ZPCI_FS_DISABLED:
1030     case ZPCI_FS_PERMANENT_ERROR:
1031         setcc(cpu, ZPCI_PCI_LS_INVAL_HANDLE);
1032         return 0;
1033     default:
1034         break;
1035     }
1036
1037     if (s390_cpu_virt_mem_read(cpu, fiba, ar, (uint8_t *)&fib, sizeof(fib))) {
1038         s390_cpu_virt_mem_handle_exc(cpu, ra);
1039         return 0;
1040     }
1041
1042     if (fib.fmt != 0) {
1043         s390_program_interrupt(env, PGM_OPERAND, 6, ra);
1044         return 0;
1045     }
1046
1047     switch (oc) {
1048     case ZPCI_MOD_FC_REG_INT:
1049         if (pbdev->summary_ind) {
1050             cc = ZPCI_PCI_LS_ERR;
1051             s390_set_status_code(env, r1, ZPCI_MOD_ST_SEQUENCE);
1052         } else if (reg_irqs(env, pbdev, fib)) {
1053             cc = ZPCI_PCI_LS_ERR;
1054             s390_set_status_code(env, r1, ZPCI_MOD_ST_RES_NOT_AVAIL);
1055         }
1056         break;
1057     case ZPCI_MOD_FC_DEREG_INT:
1058         if (!pbdev->summary_ind) {
1059             cc = ZPCI_PCI_LS_ERR;
1060             s390_set_status_code(env, r1, ZPCI_MOD_ST_SEQUENCE);
1061         } else {
1062             pci_dereg_irqs(pbdev);
1063         }
1064         break;
1065     case ZPCI_MOD_FC_REG_IOAT:
1066         if (dmaas != 0) {
1067             cc = ZPCI_PCI_LS_ERR;
1068             s390_set_status_code(env, r1, ZPCI_MOD_ST_DMAAS_INVAL);
1069         } else if (pbdev->iommu->enabled) {
1070             cc = ZPCI_PCI_LS_ERR;
1071             s390_set_status_code(env, r1, ZPCI_MOD_ST_SEQUENCE);
1072         } else if (reg_ioat(env, pbdev->iommu, fib, ra)) {
1073             cc = ZPCI_PCI_LS_ERR;
1074             s390_set_status_code(env, r1, ZPCI_MOD_ST_INSUF_RES);
1075         }
1076         break;
1077     case ZPCI_MOD_FC_DEREG_IOAT:
1078         if (dmaas != 0) {
1079             cc = ZPCI_PCI_LS_ERR;
1080             s390_set_status_code(env, r1, ZPCI_MOD_ST_DMAAS_INVAL);
1081         } else if (!pbdev->iommu->enabled) {
1082             cc = ZPCI_PCI_LS_ERR;
1083             s390_set_status_code(env, r1, ZPCI_MOD_ST_SEQUENCE);
1084         } else {
1085             pci_dereg_ioat(pbdev->iommu);
1086         }
1087         break;
1088     case ZPCI_MOD_FC_REREG_IOAT:
1089         if (dmaas != 0) {
1090             cc = ZPCI_PCI_LS_ERR;
1091             s390_set_status_code(env, r1, ZPCI_MOD_ST_DMAAS_INVAL);
1092         } else if (!pbdev->iommu->enabled) {
1093             cc = ZPCI_PCI_LS_ERR;
1094             s390_set_status_code(env, r1, ZPCI_MOD_ST_SEQUENCE);
1095         } else {
1096             pci_dereg_ioat(pbdev->iommu);
1097             if (reg_ioat(env, pbdev->iommu, fib, ra)) {
1098                 cc = ZPCI_PCI_LS_ERR;
1099                 s390_set_status_code(env, r1, ZPCI_MOD_ST_INSUF_RES);
1100             }
1101         }
1102         break;
1103     case ZPCI_MOD_FC_RESET_ERROR:
1104         switch (pbdev->state) {
1105         case ZPCI_FS_BLOCKED:
1106         case ZPCI_FS_ERROR:
1107             pbdev->state = ZPCI_FS_ENABLED;
1108             break;
1109         default:
1110             cc = ZPCI_PCI_LS_ERR;
1111             s390_set_status_code(env, r1, ZPCI_MOD_ST_SEQUENCE);
1112         }
1113         break;
1114     case ZPCI_MOD_FC_RESET_BLOCK:
1115         switch (pbdev->state) {
1116         case ZPCI_FS_ERROR:
1117             pbdev->state = ZPCI_FS_BLOCKED;
1118             break;
1119         default:
1120             cc = ZPCI_PCI_LS_ERR;
1121             s390_set_status_code(env, r1, ZPCI_MOD_ST_SEQUENCE);
1122         }
1123         break;
1124     case ZPCI_MOD_FC_SET_MEASURE: {
1125         uint64_t fmb_addr = ldq_p(&fib.fmb_addr);
1126
1127         if (fmb_addr & FMBK_MASK) {
1128             cc = ZPCI_PCI_LS_ERR;
1129             s390_pci_generate_error_event(ERR_EVENT_FMBPRO, pbdev->fh,
1130                                           pbdev->fid, fmb_addr, 0);
1131             fmb_timer_free(pbdev);
1132             break;
1133         }
1134
1135         if (!fmb_addr) {
1136             /* Stop updating FMB. */
1137             fmb_timer_free(pbdev);
1138             break;
1139         }
1140
1141         if (!pbdev->fmb_timer) {
1142             pbdev->fmb_timer = timer_new_ms(QEMU_CLOCK_VIRTUAL,
1143                                             fmb_update, pbdev);
1144         } else if (timer_pending(pbdev->fmb_timer)) {
1145             /* Remove pending timer to update FMB address. */
1146             timer_del(pbdev->fmb_timer);
1147         }
1148         pbdev->fmb_addr = fmb_addr;
1149         timer_mod(pbdev->fmb_timer,
1150                   qemu_clock_get_ms(QEMU_CLOCK_VIRTUAL) + DEFAULT_MUI);
1151         break;
1152     }
1153     default:
1154         s390_program_interrupt(&cpu->env, PGM_OPERAND, 6, ra);
1155         cc = ZPCI_PCI_LS_ERR;
1156     }
1157
1158     setcc(cpu, cc);
1159     return 0;
1160 }
1161
1162 int stpcifc_service_call(S390CPU *cpu, uint8_t r1, uint64_t fiba, uint8_t ar,
1163                          uintptr_t ra)
1164 {
1165     CPUS390XState *env = &cpu->env;
1166     uint8_t dmaas;
1167     uint32_t fh;
1168     ZpciFib fib;
1169     S390PCIBusDevice *pbdev;
1170     uint32_t data;
1171     uint64_t cc = ZPCI_PCI_LS_OK;
1172
1173     if (env->psw.mask & PSW_MASK_PSTATE) {
1174         s390_program_interrupt(env, PGM_PRIVILEGED, 6, ra);
1175         return 0;
1176     }
1177
1178     fh = env->regs[r1] >> 32;
1179     dmaas = (env->regs[r1] >> 16) & 0xff;
1180
1181     if (dmaas) {
1182         setcc(cpu, ZPCI_PCI_LS_ERR);
1183         s390_set_status_code(env, r1, ZPCI_STPCIFC_ST_INVAL_DMAAS);
1184         return 0;
1185     }
1186
1187     if (fiba & 0x7) {
1188         s390_program_interrupt(env, PGM_SPECIFICATION, 6, ra);
1189         return 0;
1190     }
1191
1192     pbdev = s390_pci_find_dev_by_idx(s390_get_phb(), fh & FH_MASK_INDEX);
1193     if (!pbdev) {
1194         setcc(cpu, ZPCI_PCI_LS_INVAL_HANDLE);
1195         return 0;
1196     }
1197
1198     memset(&fib, 0, sizeof(fib));
1199
1200     switch (pbdev->state) {
1201     case ZPCI_FS_RESERVED:
1202     case ZPCI_FS_STANDBY:
1203         setcc(cpu, ZPCI_PCI_LS_INVAL_HANDLE);
1204         return 0;
1205     case ZPCI_FS_DISABLED:
1206         if (fh & FH_MASK_ENABLE) {
1207             setcc(cpu, ZPCI_PCI_LS_INVAL_HANDLE);
1208             return 0;
1209         }
1210         goto out;
1211     /* BLOCKED bit is set to one coincident with the setting of ERROR bit.
1212      * FH Enabled bit is set to one in states of ENABLED, BLOCKED or ERROR. */
1213     case ZPCI_FS_ERROR:
1214         fib.fc |= 0x20;
1215         /* fallthrough */
1216     case ZPCI_FS_BLOCKED:
1217         fib.fc |= 0x40;
1218         /* fallthrough */
1219     case ZPCI_FS_ENABLED:
1220         fib.fc |= 0x80;
1221         if (pbdev->iommu->enabled) {
1222             fib.fc |= 0x10;
1223         }
1224         if (!(fh & FH_MASK_ENABLE)) {
1225             env->regs[r1] |= 1ULL << 63;
1226         }
1227         break;
1228     case ZPCI_FS_PERMANENT_ERROR:
1229         setcc(cpu, ZPCI_PCI_LS_ERR);
1230         s390_set_status_code(env, r1, ZPCI_STPCIFC_ST_PERM_ERROR);
1231         return 0;
1232     }
1233
1234     stq_p(&fib.pba, pbdev->iommu->pba);
1235     stq_p(&fib.pal, pbdev->iommu->pal);
1236     stq_p(&fib.iota, pbdev->iommu->g_iota);
1237     stq_p(&fib.aibv, pbdev->routes.adapter.ind_addr);
1238     stq_p(&fib.aisb, pbdev->routes.adapter.summary_addr);
1239     stq_p(&fib.fmb_addr, pbdev->fmb_addr);
1240
1241     data = ((uint32_t)pbdev->isc << 28) | ((uint32_t)pbdev->noi << 16) |
1242            ((uint32_t)pbdev->routes.adapter.ind_offset << 8) |
1243            ((uint32_t)pbdev->sum << 7) | pbdev->routes.adapter.summary_offset;
1244     stl_p(&fib.data, data);
1245
1246 out:
1247     if (s390_cpu_virt_mem_write(cpu, fiba, ar, (uint8_t *)&fib, sizeof(fib))) {
1248         s390_cpu_virt_mem_handle_exc(cpu, ra);
1249         return 0;
1250     }
1251
1252     setcc(cpu, cc);
1253     return 0;
1254 }