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 "qemu-common.h"
  16 #include "cpu.h"
  17 #include "s390-pci-inst.h"
  18 #include "s390-pci-bus.h"
  19 #include "exec/memory-internal.h"
  20 #include "qemu/error-report.h"
  21 #include "sysemu/hw_accel.h"
  22
  23 #ifndef DEBUG_S390PCI_INST
  24 #define DEBUG_S390PCI_INST  0
  25 #endif
  26
  27 #define DPRINTF(fmt, ...)                                          \
  28     do {                                                           \
  29         if (DEBUG_S390PCI_INST) {                                  \
  30             fprintf(stderr, "s390pci-inst: " fmt, ## __VA_ARGS__); \
  31         }                                                          \
  32     } while (0)
  33
  34 static void s390_set_status_code(CPUS390XState *env,
  35                                  uint8_t r, uint64_t status_code)
  36 {
  37     env->regs[r] &= ~0xff000000ULL;
  38     env->regs[r] |= (status_code & 0xff) << 24;
  39 }
  40
  41 static int list_pci(ClpReqRspListPci *rrb, uint8_t *cc)
  42 {
  43     S390PCIBusDevice *pbdev = NULL;
  44     S390pciState *s = s390_get_phb();
  45     uint32_t res_code, initial_l2, g_l2;
  46     int rc, i;
  47     uint64_t resume_token;
  48
  49     rc = 0;
  50     if (lduw_p(&rrb->request.hdr.len) != 32) {
  51         res_code = CLP_RC_LEN;
  52         rc = -EINVAL;
  53         goto out;
  54     }
  55
  56     if ((ldl_p(&rrb->request.fmt) & CLP_MASK_FMT) != 0) {
  57         res_code = CLP_RC_FMT;
  58         rc = -EINVAL;
  59         goto out;
  60     }
  61
  62     if ((ldl_p(&rrb->request.fmt) & ~CLP_MASK_FMT) != 0 ||
  63         ldq_p(&rrb->request.reserved1) != 0) {
  64         res_code = CLP_RC_RESNOT0;
  65         rc = -EINVAL;
  66         goto out;
  67     }
  68
  69     resume_token = ldq_p(&rrb->request.resume_token);
  70
  71     if (resume_token) {
  72         pbdev = s390_pci_find_dev_by_idx(s, resume_token);
  73         if (!pbdev) {
  74             res_code = CLP_RC_LISTPCI_BADRT;
  75             rc = -EINVAL;
  76             goto out;
  77         }
  78     } else {
  79         pbdev = s390_pci_find_next_avail_dev(s, NULL);
  80     }
  81
  82     if (lduw_p(&rrb->response.hdr.len) < 48) {
  83         res_code = CLP_RC_8K;
  84         rc = -EINVAL;
  85         goto out;
  86     }
  87
  88     initial_l2 = lduw_p(&rrb->response.hdr.len);
  89     if ((initial_l2 - LIST_PCI_HDR_LEN) % sizeof(ClpFhListEntry)
  90         != 0) {
  91         res_code = CLP_RC_LEN;
  92         rc = -EINVAL;
  93         *cc = 3;
  94         goto out;
  95     }
  96
  97     stl_p(&rrb->response.fmt, 0);
  98     stq_p(&rrb->response.reserved1, 0);
  99     stl_p(&rrb->response.mdd, FH_MASK_SHM);
 100     stw_p(&rrb->response.max_fn, PCI_MAX_FUNCTIONS);
 101     rrb->response.flags = UID_CHECKING_ENABLED;
 102     rrb->response.entry_size = sizeof(ClpFhListEntry);
 103
 104     i = 0;
 105     g_l2 = LIST_PCI_HDR_LEN;
 106     while (g_l2 < initial_l2 && pbdev) {
 107         stw_p(&rrb->response.fh_list[i].device_id,
 108             pci_get_word(pbdev->pdev->config + PCI_DEVICE_ID));
 109         stw_p(&rrb->response.fh_list[i].vendor_id,
 110             pci_get_word(pbdev->pdev->config + PCI_VENDOR_ID));
 111         /* Ignore RESERVED devices. */
 112         stl_p(&rrb->response.fh_list[i].config,
 113             pbdev->state == ZPCI_FS_STANDBY ? 0 : 1 << 31);
 114         stl_p(&rrb->response.fh_list[i].fid, pbdev->fid);
 115         stl_p(&rrb->response.fh_list[i].fh, pbdev->fh);
 116
 117         g_l2 += sizeof(ClpFhListEntry);
 118         /* Add endian check for DPRINTF? */
 119         DPRINTF("g_l2 %d vendor id 0x%x device id 0x%x fid 0x%x fh 0x%x\n",
 120                 g_l2,
 121                 lduw_p(&rrb->response.fh_list[i].vendor_id),
 122                 lduw_p(&rrb->response.fh_list[i].device_id),
 123                 ldl_p(&rrb->response.fh_list[i].fid),
 124                 ldl_p(&rrb->response.fh_list[i].fh));
 125         pbdev = s390_pci_find_next_avail_dev(s, pbdev);
 126         i++;
 127     }
 128
 129     if (!pbdev) {
 130         resume_token = 0;
 131     } else {
 132         resume_token = pbdev->fh & FH_MASK_INDEX;
 133     }
 134     stq_p(&rrb->response.resume_token, resume_token);
 135     stw_p(&rrb->response.hdr.len, g_l2);
 136     stw_p(&rrb->response.hdr.rsp, CLP_RC_OK);
 137 out:
 138     if (rc) {
 139         DPRINTF("list pci failed rc 0x%x\n", rc);
 140         stw_p(&rrb->response.hdr.rsp, res_code);
 141     }
 142     return rc;
 143 }
 144
 145 int clp_service_call(S390CPU *cpu, uint8_t r2, uintptr_t ra)
 146 {
 147     ClpReqHdr *reqh;
 148     ClpRspHdr *resh;
 149     S390PCIBusDevice *pbdev;
 150     uint32_t req_len;
 151     uint32_t res_len;
 152     uint8_t buffer[4096 * 2];
 153     uint8_t cc = 0;
 154     CPUS390XState *env = &cpu->env;
 155     S390pciState *s = s390_get_phb();
 156     int i;
 157
 158     cpu_synchronize_state(CPU(cpu));
 159
 160     if (env->psw.mask & PSW_MASK_PSTATE) {
 161         s390_program_interrupt(env, PGM_PRIVILEGED, 4, ra);
 162         return 0;
 163     }
 164
 165     if (s390_cpu_virt_mem_read(cpu, env->regs[r2], r2, buffer, sizeof(*reqh))) {
 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         return 0;
 178     }
 179     resh = (ClpRspHdr *)(buffer + req_len);
 180     res_len = lduw_p(&resh->len);
 181     if (res_len < 8 || res_len > 8176 || (res_len % 8 != 0)) {
 182         s390_program_interrupt(env, PGM_OPERAND, 4, ra);
 183         return 0;
 184     }
 185     if ((req_len + res_len) > 8192) {
 186         s390_program_interrupt(env, PGM_OPERAND, 4, ra);
 187         return 0;
 188     }
 189
 190     if (s390_cpu_virt_mem_read(cpu, env->regs[r2], r2, buffer,
 191                                req_len + res_len)) {
 192         return 0;
 193     }
 194
 195     if (req_len != 32) {
 196         stw_p(&resh->rsp, CLP_RC_LEN);
 197         goto out;
 198     }
 199
 200     switch (lduw_p(&reqh->cmd)) {
 201     case CLP_LIST_PCI: {
 202         ClpReqRspListPci *rrb = (ClpReqRspListPci *)buffer;
 203         list_pci(rrb, &cc);
 204         break;
 205     }
 206     case CLP_SET_PCI_FN: {
 207         ClpReqSetPci *reqsetpci = (ClpReqSetPci *)reqh;
 208         ClpRspSetPci *ressetpci = (ClpRspSetPci *)resh;
 209
 210         pbdev = s390_pci_find_dev_by_fh(s, ldl_p(&reqsetpci->fh));
 211         if (!pbdev) {
 212                 stw_p(&ressetpci->hdr.rsp, CLP_RC_SETPCIFN_FH);
 213                 goto out;
 214         }
 215
 216         switch (reqsetpci->oc) {
 217         case CLP_SET_ENABLE_PCI_FN:
 218             switch (reqsetpci->ndas) {
 219             case 0:
 220                 stw_p(&ressetpci->hdr.rsp, CLP_RC_SETPCIFN_DMAAS);
 221                 goto out;
 222             case 1:
 223                 break;
 224             default:
 225                 stw_p(&ressetpci->hdr.rsp, CLP_RC_SETPCIFN_RES);
 226                 goto out;
 227             }
 228
 229             if (pbdev->fh & FH_MASK_ENABLE) {
 230                 stw_p(&ressetpci->hdr.rsp, CLP_RC_SETPCIFN_FHOP);
 231                 goto out;
 232             }
 233
 234             pbdev->fh |= FH_MASK_ENABLE;
 235             pbdev->state = ZPCI_FS_ENABLED;
 236             stl_p(&ressetpci->fh, pbdev->fh);
 237             stw_p(&ressetpci->hdr.rsp, CLP_RC_OK);
 238             break;
 239         case CLP_SET_DISABLE_PCI_FN:
 240             if (!(pbdev->fh & FH_MASK_ENABLE)) {
 241                 stw_p(&ressetpci->hdr.rsp, CLP_RC_SETPCIFN_FHOP);
 242                 goto out;
 243             }
 244             device_reset(DEVICE(pbdev));
 245             pbdev->fh &= ~FH_MASK_ENABLE;
 246             pbdev->state = ZPCI_FS_DISABLED;
 247             stl_p(&ressetpci->fh, pbdev->fh);
 248             stw_p(&ressetpci->hdr.rsp, CLP_RC_OK);
 249             break;
 250         default:
 251             DPRINTF("unknown set pci command\n");
 252             stw_p(&ressetpci->hdr.rsp, CLP_RC_SETPCIFN_FHOP);
 253             break;
 254         }
 255         break;
 256     }
 257     case CLP_QUERY_PCI_FN: {
 258         ClpReqQueryPci *reqquery = (ClpReqQueryPci *)reqh;
 259         ClpRspQueryPci *resquery = (ClpRspQueryPci *)resh;
 260
 261         pbdev = s390_pci_find_dev_by_fh(s, ldl_p(&reqquery->fh));
 262         if (!pbdev) {
 263             DPRINTF("query pci no pci dev\n");
 264             stw_p(&resquery->hdr.rsp, CLP_RC_SETPCIFN_FH);
 265             goto out;
 266         }
 267
 268         for (i = 0; i < PCI_BAR_COUNT; i++) {
 269             uint32_t data = pci_get_long(pbdev->pdev->config +
 270                 PCI_BASE_ADDRESS_0 + (i * 4));
 271
 272             stl_p(&resquery->bar[i], data);
 273             resquery->bar_size[i] = pbdev->pdev->io_regions[i].size ?
 274                                     ctz64(pbdev->pdev->io_regions[i].size) : 0;
 275             DPRINTF("bar %d addr 0x%x size 0x%" PRIx64 "barsize 0x%x\n", i,
 276                     ldl_p(&resquery->bar[i]),
 277                     pbdev->pdev->io_regions[i].size,
 278                     resquery->bar_size[i]);
 279         }
 280
 281         stq_p(&resquery->sdma, ZPCI_SDMA_ADDR);
 282         stq_p(&resquery->edma, ZPCI_EDMA_ADDR);
 283         stl_p(&resquery->fid, pbdev->fid);
 284         stw_p(&resquery->pchid, 0);
 285         stw_p(&resquery->ug, 1);
 286         stl_p(&resquery->uid, pbdev->uid);
 287         stw_p(&resquery->hdr.rsp, CLP_RC_OK);
 288         break;
 289     }
 290     case CLP_QUERY_PCI_FNGRP: {
 291         ClpRspQueryPciGrp *resgrp = (ClpRspQueryPciGrp *)resh;
 292         resgrp->fr = 1;
 293         stq_p(&resgrp->dasm, 0);
 294         stq_p(&resgrp->msia, ZPCI_MSI_ADDR);
 295         stw_p(&resgrp->mui, 0);
 296         stw_p(&resgrp->i, 128);
 297         resgrp->version = 0;
 298
 299         stw_p(&resgrp->hdr.rsp, CLP_RC_OK);
 300         break;
 301     }
 302     default:
 303         DPRINTF("unknown clp command\n");
 304         stw_p(&resh->rsp, CLP_RC_CMD);
 305         break;
 306     }
 307
 308 out:
 309     if (s390_cpu_virt_mem_write(cpu, env->regs[r2], r2, buffer,
 310                                 req_len + res_len)) {
 311         return 0;
 312     }
 313     setcc(cpu, cc);
 314     return 0;
 315 }
 316
 317 int pcilg_service_call(S390CPU *cpu, uint8_t r1, uint8_t r2, uintptr_t ra)
 318 {
 319     CPUS390XState *env = &cpu->env;
 320     S390PCIBusDevice *pbdev;
 321     uint64_t offset;
 322     uint64_t data;
 323     MemoryRegion *mr;
 324     MemTxResult result;
 325     uint8_t len;
 326     uint32_t fh;
 327     uint8_t pcias;
 328
 329     cpu_synchronize_state(CPU(cpu));
 330
 331     if (env->psw.mask & PSW_MASK_PSTATE) {
 332         s390_program_interrupt(env, PGM_PRIVILEGED, 4, ra);
 333         return 0;
 334     }
 335
 336     if (r2 & 0x1) {
 337         s390_program_interrupt(env, PGM_SPECIFICATION, 4, ra);
 338         return 0;
 339     }
 340
 341     fh = env->regs[r2] >> 32;
 342     pcias = (env->regs[r2] >> 16) & 0xf;
 343     len = env->regs[r2] & 0xf;
 344     offset = env->regs[r2 + 1];
 345
 346     pbdev = s390_pci_find_dev_by_fh(s390_get_phb(), fh);
 347     if (!pbdev) {
 348         DPRINTF("pcilg no pci dev\n");
 349         setcc(cpu, ZPCI_PCI_LS_INVAL_HANDLE);
 350         return 0;
 351     }
 352
 353     switch (pbdev->state) {
 354     case ZPCI_FS_RESERVED:
 355     case ZPCI_FS_STANDBY:
 356     case ZPCI_FS_DISABLED:
 357     case ZPCI_FS_PERMANENT_ERROR:
 358         setcc(cpu, ZPCI_PCI_LS_INVAL_HANDLE);
 359         return 0;
 360     case ZPCI_FS_ERROR:
 361         setcc(cpu, ZPCI_PCI_LS_ERR);
 362         s390_set_status_code(env, r2, ZPCI_PCI_ST_BLOCKED);
 363         return 0;
 364     default:
 365         break;
 366     }
 367
 368     if (pcias < 6) {
 369         if ((8 - (offset & 0x7)) < len) {
 370             s390_program_interrupt(env, PGM_OPERAND, 4, ra);
 371             return 0;
 372         }
 373         mr = pbdev->pdev->io_regions[pcias].memory;
 374         result = memory_region_dispatch_read(mr, offset, &data, len,
 375                                              MEMTXATTRS_UNSPECIFIED);
 376         if (result != MEMTX_OK) {
 377             s390_program_interrupt(env, PGM_OPERAND, 4, ra);
 378             return 0;
 379         }
 380     } else if (pcias == 15) {
 381         if ((4 - (offset & 0x3)) < len) {
 382             s390_program_interrupt(env, PGM_OPERAND, 4, ra);
 383             return 0;
 384         }
 385         data =  pci_host_config_read_common(
 386                    pbdev->pdev, offset, pci_config_size(pbdev->pdev), len);
 387
 388         switch (len) {
 389         case 1:
 390             break;
 391         case 2:
 392             data = bswap16(data);
 393             break;
 394         case 4:
 395             data = bswap32(data);
 396             break;
 397         case 8:
 398             data = bswap64(data);
 399             break;
 400         default:
 401             s390_program_interrupt(env, PGM_OPERAND, 4, ra);
 402             return 0;
 403         }
 404     } else {
 405         DPRINTF("invalid space\n");
 406         setcc(cpu, ZPCI_PCI_LS_ERR);
 407         s390_set_status_code(env, r2, ZPCI_PCI_ST_INVAL_AS);
 408         return 0;
 409     }
 410
 411     env->regs[r1] = data;
 412     setcc(cpu, ZPCI_PCI_LS_OK);
 413     return 0;
 414 }
 415
 416 static int trap_msix(S390PCIBusDevice *pbdev, uint64_t offset, uint8_t pcias)
 417 {
 418     if (pbdev->msix.available && pbdev->msix.table_bar == pcias &&
 419         offset >= pbdev->msix.table_offset &&
 420         offset < (pbdev->msix.table_offset +
 421                   pbdev->msix.entries * PCI_MSIX_ENTRY_SIZE)) {
 422         return 1;
 423     } else {
 424         return 0;
 425     }
 426 }
 427
 428 int pcistg_service_call(S390CPU *cpu, uint8_t r1, uint8_t r2, uintptr_t ra)
 429 {
 430     CPUS390XState *env = &cpu->env;
 431     uint64_t offset, data;
 432     S390PCIBusDevice *pbdev;
 433     MemoryRegion *mr;
 434     MemTxResult result;
 435     uint8_t len;
 436     uint32_t fh;
 437     uint8_t pcias;
 438
 439     cpu_synchronize_state(CPU(cpu));
 440
 441     if (env->psw.mask & PSW_MASK_PSTATE) {
 442         s390_program_interrupt(env, PGM_PRIVILEGED, 4, ra);
 443         return 0;
 444     }
 445
 446     if (r2 & 0x1) {
 447         s390_program_interrupt(env, PGM_SPECIFICATION, 4, ra);
 448         return 0;
 449     }
 450
 451     fh = env->regs[r2] >> 32;
 452     pcias = (env->regs[r2] >> 16) & 0xf;
 453     len = env->regs[r2] & 0xf;
 454     offset = env->regs[r2 + 1];
 455
 456     pbdev = s390_pci_find_dev_by_fh(s390_get_phb(), fh);
 457     if (!pbdev) {
 458         DPRINTF("pcistg no pci dev\n");
 459         setcc(cpu, ZPCI_PCI_LS_INVAL_HANDLE);
 460         return 0;
 461     }
 462
 463     switch (pbdev->state) {
 464     case ZPCI_FS_RESERVED:
 465     case ZPCI_FS_STANDBY:
 466     case ZPCI_FS_DISABLED:
 467     case ZPCI_FS_PERMANENT_ERROR:
 468         setcc(cpu, ZPCI_PCI_LS_INVAL_HANDLE);
 469         return 0;
 470     case ZPCI_FS_ERROR:
 471         setcc(cpu, ZPCI_PCI_LS_ERR);
 472         s390_set_status_code(env, r2, ZPCI_PCI_ST_BLOCKED);
 473         return 0;
 474     default:
 475         break;
 476     }
 477
 478     data = env->regs[r1];
 479     if (pcias < 6) {
 480         if ((8 - (offset & 0x7)) < len) {
 481             s390_program_interrupt(env, PGM_OPERAND, 4, ra);
 482             return 0;
 483         }
 484
 485         if (trap_msix(pbdev, offset, pcias)) {
 486             offset = offset - pbdev->msix.table_offset;
 487             mr = &pbdev->pdev->msix_table_mmio;
 488         } else {
 489             mr = pbdev->pdev->io_regions[pcias].memory;
 490         }
 491
 492         result = memory_region_dispatch_write(mr, offset, data, len,
 493                                      MEMTXATTRS_UNSPECIFIED);
 494         if (result != MEMTX_OK) {
 495             s390_program_interrupt(env, PGM_OPERAND, 4, ra);
 496             return 0;
 497         }
 498     } else if (pcias == 15) {
 499         if ((4 - (offset & 0x3)) < len) {
 500             s390_program_interrupt(env, PGM_OPERAND, 4, ra);
 501             return 0;
 502         }
 503         switch (len) {
 504         case 1:
 505             break;
 506         case 2:
 507             data = bswap16(data);
 508             break;
 509         case 4:
 510             data = bswap32(data);
 511             break;
 512         case 8:
 513             data = bswap64(data);
 514             break;
 515         default:
 516             s390_program_interrupt(env, PGM_OPERAND, 4, ra);
 517             return 0;
 518         }
 519
 520         pci_host_config_write_common(pbdev->pdev, offset,
 521                                      pci_config_size(pbdev->pdev),
 522                                      data, len);
 523     } else {
 524         DPRINTF("pcistg invalid space\n");
 525         setcc(cpu, ZPCI_PCI_LS_ERR);
 526         s390_set_status_code(env, r2, ZPCI_PCI_ST_INVAL_AS);
 527         return 0;
 528     }
 529
 530     setcc(cpu, ZPCI_PCI_LS_OK);
 531     return 0;
 532 }
 533
 534 int rpcit_service_call(S390CPU *cpu, uint8_t r1, uint8_t r2, uintptr_t ra)
 535 {
 536     CPUS390XState *env = &cpu->env;
 537     uint32_t fh;
 538     S390PCIBusDevice *pbdev;
 539     S390PCIIOMMU *iommu;
 540     hwaddr start, end;
 541     IOMMUTLBEntry entry;
 542     IOMMUMemoryRegion *iommu_mr;
 543     IOMMUMemoryRegionClass *imrc;
 544
 545     cpu_synchronize_state(CPU(cpu));
 546
 547     if (env->psw.mask & PSW_MASK_PSTATE) {
 548         s390_program_interrupt(env, PGM_PRIVILEGED, 4, ra);
 549         goto out;
 550     }
 551
 552     if (r2 & 0x1) {
 553         s390_program_interrupt(env, PGM_SPECIFICATION, 4, ra);
 554         goto out;
 555     }
 556
 557     fh = env->regs[r1] >> 32;
 558     start = env->regs[r2];
 559     end = start + env->regs[r2 + 1];
 560
 561     pbdev = s390_pci_find_dev_by_fh(s390_get_phb(), fh);
 562     if (!pbdev) {
 563         DPRINTF("rpcit no pci dev\n");
 564         setcc(cpu, ZPCI_PCI_LS_INVAL_HANDLE);
 565         goto out;
 566     }
 567
 568     switch (pbdev->state) {
 569     case ZPCI_FS_RESERVED:
 570     case ZPCI_FS_STANDBY:
 571     case ZPCI_FS_DISABLED:
 572     case ZPCI_FS_PERMANENT_ERROR:
 573         setcc(cpu, ZPCI_PCI_LS_INVAL_HANDLE);
 574         return 0;
 575     case ZPCI_FS_ERROR:
 576         setcc(cpu, ZPCI_PCI_LS_ERR);
 577         s390_set_status_code(env, r1, ZPCI_MOD_ST_ERROR_RECOVER);
 578         return 0;
 579     default:
 580         break;
 581     }
 582
 583     iommu = pbdev->iommu;
 584     if (!iommu->g_iota) {
 585         pbdev->state = ZPCI_FS_ERROR;
 586         setcc(cpu, ZPCI_PCI_LS_ERR);
 587         s390_set_status_code(env, r1, ZPCI_PCI_ST_INSUF_RES);
 588         s390_pci_generate_error_event(ERR_EVENT_INVALAS, pbdev->fh, pbdev->fid,
 589                                       start, 0);
 590         goto out;
 591     }
 592
 593     if (end < iommu->pba || start > iommu->pal) {
 594         pbdev->state = ZPCI_FS_ERROR;
 595         setcc(cpu, ZPCI_PCI_LS_ERR);
 596         s390_set_status_code(env, r1, ZPCI_PCI_ST_INSUF_RES);
 597         s390_pci_generate_error_event(ERR_EVENT_OORANGE, pbdev->fh, pbdev->fid,
 598                                       start, 0);
 599         goto out;
 600     }
 601
 602     iommu_mr = &iommu->iommu_mr;
 603     imrc = IOMMU_MEMORY_REGION_GET_CLASS(iommu_mr);
 604
 605     while (start < end) {
 606         entry = imrc->translate(iommu_mr, start, IOMMU_NONE);
 607
 608         if (!entry.translated_addr) {
 609             pbdev->state = ZPCI_FS_ERROR;
 610             setcc(cpu, ZPCI_PCI_LS_ERR);
 611             s390_set_status_code(env, r1, ZPCI_PCI_ST_INSUF_RES);
 612             s390_pci_generate_error_event(ERR_EVENT_SERR, pbdev->fh, pbdev->fid,
 613                                           start, ERR_EVENT_Q_BIT);
 614             goto out;
 615         }
 616
 617         memory_region_notify_iommu(iommu_mr, entry);
 618         start += entry.addr_mask + 1;
 619     }
 620
 621     setcc(cpu, ZPCI_PCI_LS_OK);
 622 out:
 623     return 0;
 624 }
 625
 626 int pcistb_service_call(S390CPU *cpu, uint8_t r1, uint8_t r3, uint64_t gaddr,
 627                         uint8_t ar, uintptr_t ra)
 628 {
 629     CPUS390XState *env = &cpu->env;
 630     S390PCIBusDevice *pbdev;
 631     MemoryRegion *mr;
 632     MemTxResult result;
 633     int i;
 634     uint32_t fh;
 635     uint8_t pcias;
 636     uint8_t len;
 637     uint8_t buffer[128];
 638
 639     if (env->psw.mask & PSW_MASK_PSTATE) {
 640         s390_program_interrupt(env, PGM_PRIVILEGED, 6, ra);
 641         return 0;
 642     }
 643
 644     fh = env->regs[r1] >> 32;
 645     pcias = (env->regs[r1] >> 16) & 0xf;
 646     len = env->regs[r1] & 0xff;
 647
 648     if (pcias > 5) {
 649         DPRINTF("pcistb invalid space\n");
 650         setcc(cpu, ZPCI_PCI_LS_ERR);
 651         s390_set_status_code(env, r1, ZPCI_PCI_ST_INVAL_AS);
 652         return 0;
 653     }
 654
 655     switch (len) {
 656     case 16:
 657     case 32:
 658     case 64:
 659     case 128:
 660         break;
 661     default:
 662         s390_program_interrupt(env, PGM_SPECIFICATION, 6, ra);
 663         return 0;
 664     }
 665
 666     pbdev = s390_pci_find_dev_by_fh(s390_get_phb(), fh);
 667     if (!pbdev) {
 668         DPRINTF("pcistb no pci dev fh 0x%x\n", fh);
 669         setcc(cpu, ZPCI_PCI_LS_INVAL_HANDLE);
 670         return 0;
 671     }
 672
 673     switch (pbdev->state) {
 674     case ZPCI_FS_RESERVED:
 675     case ZPCI_FS_STANDBY:
 676     case ZPCI_FS_DISABLED:
 677     case ZPCI_FS_PERMANENT_ERROR:
 678         setcc(cpu, ZPCI_PCI_LS_INVAL_HANDLE);
 679         return 0;
 680     case ZPCI_FS_ERROR:
 681         setcc(cpu, ZPCI_PCI_LS_ERR);
 682         s390_set_status_code(env, r1, ZPCI_PCI_ST_BLOCKED);
 683         return 0;
 684     default:
 685         break;
 686     }
 687
 688     mr = pbdev->pdev->io_regions[pcias].memory;
 689     if (!memory_region_access_valid(mr, env->regs[r3], len, true)) {
 690         s390_program_interrupt(env, PGM_OPERAND, 6, ra);
 691         return 0;
 692     }
 693
 694     if (s390_cpu_virt_mem_read(cpu, gaddr, ar, buffer, len)) {
 695         return 0;
 696     }
 697
 698     for (i = 0; i < len / 8; i++) {
 699         result = memory_region_dispatch_write(mr, env->regs[r3] + i * 8,
 700                                      ldq_p(buffer + i * 8), 8,
 701                                      MEMTXATTRS_UNSPECIFIED);
 702         if (result != MEMTX_OK) {
 703             s390_program_interrupt(env, PGM_OPERAND, 6, ra);
 704             return 0;
 705         }
 706     }
 707
 708     setcc(cpu, ZPCI_PCI_LS_OK);
 709     return 0;
 710 }
 711
 712 static int reg_irqs(CPUS390XState *env, S390PCIBusDevice *pbdev, ZpciFib fib)
 713 {
 714     int ret, len;
 715     uint8_t isc = FIB_DATA_ISC(ldl_p(&fib.data));
 716
 717     pbdev->routes.adapter.adapter_id = css_get_adapter_id(
 718                                        CSS_IO_ADAPTER_PCI, isc);
 719     pbdev->summary_ind = get_indicator(ldq_p(&fib.aisb), sizeof(uint64_t));
 720     len = BITS_TO_LONGS(FIB_DATA_NOI(ldl_p(&fib.data))) * sizeof(unsigned long);
 721     pbdev->indicator = get_indicator(ldq_p(&fib.aibv), len);
 722
 723     ret = map_indicator(&pbdev->routes.adapter, pbdev->summary_ind);
 724     if (ret) {
 725         goto out;
 726     }
 727
 728     ret = map_indicator(&pbdev->routes.adapter, pbdev->indicator);
 729     if (ret) {
 730         goto out;
 731     }
 732
 733     pbdev->routes.adapter.summary_addr = ldq_p(&fib.aisb);
 734     pbdev->routes.adapter.summary_offset = FIB_DATA_AISBO(ldl_p(&fib.data));
 735     pbdev->routes.adapter.ind_addr = ldq_p(&fib.aibv);
 736     pbdev->routes.adapter.ind_offset = FIB_DATA_AIBVO(ldl_p(&fib.data));
 737     pbdev->isc = isc;
 738     pbdev->noi = FIB_DATA_NOI(ldl_p(&fib.data));
 739     pbdev->sum = FIB_DATA_SUM(ldl_p(&fib.data));
 740
 741     DPRINTF("reg_irqs adapter id %d\n", pbdev->routes.adapter.adapter_id);
 742     return 0;
 743 out:
 744     release_indicator(&pbdev->routes.adapter, pbdev->summary_ind);
 745     release_indicator(&pbdev->routes.adapter, pbdev->indicator);
 746     pbdev->summary_ind = NULL;
 747     pbdev->indicator = NULL;
 748     return ret;
 749 }
 750
 751 int pci_dereg_irqs(S390PCIBusDevice *pbdev)
 752 {
 753     release_indicator(&pbdev->routes.adapter, pbdev->summary_ind);
 754     release_indicator(&pbdev->routes.adapter, pbdev->indicator);
 755
 756     pbdev->summary_ind = NULL;
 757     pbdev->indicator = NULL;
 758     pbdev->routes.adapter.summary_addr = 0;
 759     pbdev->routes.adapter.summary_offset = 0;
 760     pbdev->routes.adapter.ind_addr = 0;
 761     pbdev->routes.adapter.ind_offset = 0;
 762     pbdev->isc = 0;
 763     pbdev->noi = 0;
 764     pbdev->sum = 0;
 765
 766     DPRINTF("dereg_irqs adapter id %d\n", pbdev->routes.adapter.adapter_id);
 767     return 0;
 768 }
 769
 770 static int reg_ioat(CPUS390XState *env, S390PCIIOMMU *iommu, ZpciFib fib,
 771                     uintptr_t ra)
 772 {
 773     uint64_t pba = ldq_p(&fib.pba);
 774     uint64_t pal = ldq_p(&fib.pal);
 775     uint64_t g_iota = ldq_p(&fib.iota);
 776     uint8_t dt = (g_iota >> 2) & 0x7;
 777     uint8_t t = (g_iota >> 11) & 0x1;
 778
 779     if (pba > pal || pba < ZPCI_SDMA_ADDR || pal > ZPCI_EDMA_ADDR) {
 780         s390_program_interrupt(env, PGM_OPERAND, 6, ra);
 781         return -EINVAL;
 782     }
 783
 784     /* currently we only support designation type 1 with translation */
 785     if (!(dt == ZPCI_IOTA_RTTO && t)) {
 786         error_report("unsupported ioat dt %d t %d", dt, t);
 787         s390_program_interrupt(env, PGM_OPERAND, 6, ra);
 788         return -EINVAL;
 789     }
 790
 791     iommu->pba = pba;
 792     iommu->pal = pal;
 793     iommu->g_iota = g_iota;
 794
 795     s390_pci_iommu_enable(iommu);
 796
 797     return 0;
 798 }
 799
 800 void pci_dereg_ioat(S390PCIIOMMU *iommu)
 801 {
 802     s390_pci_iommu_disable(iommu);
 803     iommu->pba = 0;
 804     iommu->pal = 0;
 805     iommu->g_iota = 0;
 806 }
 807
 808 int mpcifc_service_call(S390CPU *cpu, uint8_t r1, uint64_t fiba, uint8_t ar,
 809                         uintptr_t ra)
 810 {
 811     CPUS390XState *env = &cpu->env;
 812     uint8_t oc, dmaas;
 813     uint32_t fh;
 814     ZpciFib fib;
 815     S390PCIBusDevice *pbdev;
 816     uint64_t cc = ZPCI_PCI_LS_OK;
 817
 818     if (env->psw.mask & PSW_MASK_PSTATE) {
 819         s390_program_interrupt(env, PGM_PRIVILEGED, 6, ra);
 820         return 0;
 821     }
 822
 823     oc = env->regs[r1] & 0xff;
 824     dmaas = (env->regs[r1] >> 16) & 0xff;
 825     fh = env->regs[r1] >> 32;
 826
 827     if (fiba & 0x7) {
 828         s390_program_interrupt(env, PGM_SPECIFICATION, 6, ra);
 829         return 0;
 830     }
 831
 832     pbdev = s390_pci_find_dev_by_fh(s390_get_phb(), fh);
 833     if (!pbdev) {
 834         DPRINTF("mpcifc no pci dev fh 0x%x\n", fh);
 835         setcc(cpu, ZPCI_PCI_LS_INVAL_HANDLE);
 836         return 0;
 837     }
 838
 839     switch (pbdev->state) {
 840     case ZPCI_FS_RESERVED:
 841     case ZPCI_FS_STANDBY:
 842     case ZPCI_FS_DISABLED:
 843     case ZPCI_FS_PERMANENT_ERROR:
 844         setcc(cpu, ZPCI_PCI_LS_INVAL_HANDLE);
 845         return 0;
 846     default:
 847         break;
 848     }
 849
 850     if (s390_cpu_virt_mem_read(cpu, fiba, ar, (uint8_t *)&fib, sizeof(fib))) {
 851         return 0;
 852     }
 853
 854     if (fib.fmt != 0) {
 855         s390_program_interrupt(env, PGM_OPERAND, 6, ra);
 856         return 0;
 857     }
 858
 859     switch (oc) {
 860     case ZPCI_MOD_FC_REG_INT:
 861         if (pbdev->summary_ind) {
 862             cc = ZPCI_PCI_LS_ERR;
 863             s390_set_status_code(env, r1, ZPCI_MOD_ST_SEQUENCE);
 864         } else if (reg_irqs(env, pbdev, fib)) {
 865             cc = ZPCI_PCI_LS_ERR;
 866             s390_set_status_code(env, r1, ZPCI_MOD_ST_RES_NOT_AVAIL);
 867         }
 868         break;
 869     case ZPCI_MOD_FC_DEREG_INT:
 870         if (!pbdev->summary_ind) {
 871             cc = ZPCI_PCI_LS_ERR;
 872             s390_set_status_code(env, r1, ZPCI_MOD_ST_SEQUENCE);
 873         } else {
 874             pci_dereg_irqs(pbdev);
 875         }
 876         break;
 877     case ZPCI_MOD_FC_REG_IOAT:
 878         if (dmaas != 0) {
 879             cc = ZPCI_PCI_LS_ERR;
 880             s390_set_status_code(env, r1, ZPCI_MOD_ST_DMAAS_INVAL);
 881         } else if (pbdev->iommu->enabled) {
 882             cc = ZPCI_PCI_LS_ERR;
 883             s390_set_status_code(env, r1, ZPCI_MOD_ST_SEQUENCE);
 884         } else if (reg_ioat(env, pbdev->iommu, fib, ra)) {
 885             cc = ZPCI_PCI_LS_ERR;
 886             s390_set_status_code(env, r1, ZPCI_MOD_ST_INSUF_RES);
 887         }
 888         break;
 889     case ZPCI_MOD_FC_DEREG_IOAT:
 890         if (dmaas != 0) {
 891             cc = ZPCI_PCI_LS_ERR;
 892             s390_set_status_code(env, r1, ZPCI_MOD_ST_DMAAS_INVAL);
 893         } else if (!pbdev->iommu->enabled) {
 894             cc = ZPCI_PCI_LS_ERR;
 895             s390_set_status_code(env, r1, ZPCI_MOD_ST_SEQUENCE);
 896         } else {
 897             pci_dereg_ioat(pbdev->iommu);
 898         }
 899         break;
 900     case ZPCI_MOD_FC_REREG_IOAT:
 901         if (dmaas != 0) {
 902             cc = ZPCI_PCI_LS_ERR;
 903             s390_set_status_code(env, r1, ZPCI_MOD_ST_DMAAS_INVAL);
 904         } else if (!pbdev->iommu->enabled) {
 905             cc = ZPCI_PCI_LS_ERR;
 906             s390_set_status_code(env, r1, ZPCI_MOD_ST_SEQUENCE);
 907         } else {
 908             pci_dereg_ioat(pbdev->iommu);
 909             if (reg_ioat(env, pbdev->iommu, fib, ra)) {
 910                 cc = ZPCI_PCI_LS_ERR;
 911                 s390_set_status_code(env, r1, ZPCI_MOD_ST_INSUF_RES);
 912             }
 913         }
 914         break;
 915     case ZPCI_MOD_FC_RESET_ERROR:
 916         switch (pbdev->state) {
 917         case ZPCI_FS_BLOCKED:
 918         case ZPCI_FS_ERROR:
 919             pbdev->state = ZPCI_FS_ENABLED;
 920             break;
 921         default:
 922             cc = ZPCI_PCI_LS_ERR;
 923             s390_set_status_code(env, r1, ZPCI_MOD_ST_SEQUENCE);
 924         }
 925         break;
 926     case ZPCI_MOD_FC_RESET_BLOCK:
 927         switch (pbdev->state) {
 928         case ZPCI_FS_ERROR:
 929             pbdev->state = ZPCI_FS_BLOCKED;
 930             break;
 931         default:
 932             cc = ZPCI_PCI_LS_ERR;
 933             s390_set_status_code(env, r1, ZPCI_MOD_ST_SEQUENCE);
 934         }
 935         break;
 936     case ZPCI_MOD_FC_SET_MEASURE:
 937         pbdev->fmb_addr = ldq_p(&fib.fmb_addr);
 938         break;
 939     default:
 940         s390_program_interrupt(&cpu->env, PGM_OPERAND, 6, ra);
 941         cc = ZPCI_PCI_LS_ERR;
 942     }
 943
 944     setcc(cpu, cc);
 945     return 0;
 946 }
 947
 948 int stpcifc_service_call(S390CPU *cpu, uint8_t r1, uint64_t fiba, uint8_t ar,
 949                          uintptr_t ra)
 950 {
 951     CPUS390XState *env = &cpu->env;
 952     uint8_t dmaas;
 953     uint32_t fh;
 954     ZpciFib fib;
 955     S390PCIBusDevice *pbdev;
 956     uint32_t data;
 957     uint64_t cc = ZPCI_PCI_LS_OK;
 958
 959     if (env->psw.mask & PSW_MASK_PSTATE) {
 960         s390_program_interrupt(env, PGM_PRIVILEGED, 6, ra);
 961         return 0;
 962     }
 963
 964     fh = env->regs[r1] >> 32;
 965     dmaas = (env->regs[r1] >> 16) & 0xff;
 966
 967     if (dmaas) {
 968         setcc(cpu, ZPCI_PCI_LS_ERR);
 969         s390_set_status_code(env, r1, ZPCI_STPCIFC_ST_INVAL_DMAAS);
 970         return 0;
 971     }
 972
 973     if (fiba & 0x7) {
 974         s390_program_interrupt(env, PGM_SPECIFICATION, 6, ra);
 975         return 0;
 976     }
 977
 978     pbdev = s390_pci_find_dev_by_idx(s390_get_phb(), fh & FH_MASK_INDEX);
 979     if (!pbdev) {
 980         setcc(cpu, ZPCI_PCI_LS_INVAL_HANDLE);
 981         return 0;
 982     }
 983
 984     memset(&fib, 0, sizeof(fib));
 985
 986     switch (pbdev->state) {
 987     case ZPCI_FS_RESERVED:
 988     case ZPCI_FS_STANDBY:
 989         setcc(cpu, ZPCI_PCI_LS_INVAL_HANDLE);
 990         return 0;
 991     case ZPCI_FS_DISABLED:
 992         if (fh & FH_MASK_ENABLE) {
 993             setcc(cpu, ZPCI_PCI_LS_INVAL_HANDLE);
 994             return 0;
 995         }
 996         goto out;
 997     /* BLOCKED bit is set to one coincident with the setting of ERROR bit.
 998      * FH Enabled bit is set to one in states of ENABLED, BLOCKED or ERROR. */
 999     case ZPCI_FS_ERROR:
1000         fib.fc |= 0x20;
1001     case ZPCI_FS_BLOCKED:
1002         fib.fc |= 0x40;
1003     case ZPCI_FS_ENABLED:
1004         fib.fc |= 0x80;
1005         if (pbdev->iommu->enabled) {
1006             fib.fc |= 0x10;
1007         }
1008         if (!(fh & FH_MASK_ENABLE)) {
1009             env->regs[r1] |= 1ULL << 63;
1010         }
1011         break;
1012     case ZPCI_FS_PERMANENT_ERROR:
1013         setcc(cpu, ZPCI_PCI_LS_ERR);
1014         s390_set_status_code(env, r1, ZPCI_STPCIFC_ST_PERM_ERROR);
1015         return 0;
1016     }
1017
1018     stq_p(&fib.pba, pbdev->iommu->pba);
1019     stq_p(&fib.pal, pbdev->iommu->pal);
1020     stq_p(&fib.iota, pbdev->iommu->g_iota);
1021     stq_p(&fib.aibv, pbdev->routes.adapter.ind_addr);
1022     stq_p(&fib.aisb, pbdev->routes.adapter.summary_addr);
1023     stq_p(&fib.fmb_addr, pbdev->fmb_addr);
1024
1025     data = ((uint32_t)pbdev->isc << 28) | ((uint32_t)pbdev->noi << 16) |
1026            ((uint32_t)pbdev->routes.adapter.ind_offset << 8) |
1027            ((uint32_t)pbdev->sum << 7) | pbdev->routes.adapter.summary_offset;
1028     stl_p(&fib.data, data);
1029
1030 out:
1031     if (s390_cpu_virt_mem_write(cpu, fiba, ar, (uint8_t *)&fib, sizeof(fib))) {
1032         return 0;
1033     }
1034
1035     setcc(cpu, cc);
1036     return 0;
1037 }