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)
 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         program_interrupt(env, PGM_PRIVILEGED, 4);
 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         program_interrupt(env, PGM_OPERAND, 4);
 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         program_interrupt(env, PGM_OPERAND, 4);
 183         return 0;
 184     }
 185     if ((req_len + res_len) > 8192) {
 186         program_interrupt(env, PGM_OPERAND, 4);
 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)
 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         program_interrupt(env, PGM_PRIVILEGED, 4);
 333         return 0;
 334     }
 335
 336     if (r2 & 0x1) {
 337         program_interrupt(env, PGM_SPECIFICATION, 4);
 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             program_interrupt(env, PGM_OPERAND, 4);
 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             program_interrupt(env, PGM_OPERAND, 4);
 378             return 0;
 379         }
 380     } else if (pcias == 15) {
 381         if ((4 - (offset & 0x3)) < len) {
 382             program_interrupt(env, PGM_OPERAND, 4);
 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             program_interrupt(env, PGM_OPERAND, 4);
 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 void update_msix_table_msg_data(S390PCIBusDevice *pbdev, uint64_t offset,
 417                                        uint64_t *data, uint8_t len)
 418 {
 419     uint32_t val;
 420     uint8_t *msg_data;
 421
 422     if (offset % PCI_MSIX_ENTRY_SIZE != 8) {
 423         return;
 424     }
 425
 426     if (len != 4) {
 427         DPRINTF("access msix table msg data but len is %d\n", len);
 428         return;
 429     }
 430
 431     msg_data = (uint8_t *)data - offset % PCI_MSIX_ENTRY_SIZE +
 432                PCI_MSIX_ENTRY_VECTOR_CTRL;
 433     val = pci_get_long(msg_data) |
 434         ((pbdev->fh & FH_MASK_INDEX) << ZPCI_MSI_VEC_BITS);
 435     pci_set_long(msg_data, val);
 436     DPRINTF("update msix msg_data to 0x%" PRIx64 "\n", *data);
 437 }
 438
 439 static int trap_msix(S390PCIBusDevice *pbdev, uint64_t offset, uint8_t pcias)
 440 {
 441     if (pbdev->msix.available && pbdev->msix.table_bar == pcias &&
 442         offset >= pbdev->msix.table_offset &&
 443         offset < (pbdev->msix.table_offset +
 444                   pbdev->msix.entries * PCI_MSIX_ENTRY_SIZE)) {
 445         return 1;
 446     } else {
 447         return 0;
 448     }
 449 }
 450
 451 int pcistg_service_call(S390CPU *cpu, uint8_t r1, uint8_t r2)
 452 {
 453     CPUS390XState *env = &cpu->env;
 454     uint64_t offset, data;
 455     S390PCIBusDevice *pbdev;
 456     MemoryRegion *mr;
 457     MemTxResult result;
 458     uint8_t len;
 459     uint32_t fh;
 460     uint8_t pcias;
 461
 462     cpu_synchronize_state(CPU(cpu));
 463
 464     if (env->psw.mask & PSW_MASK_PSTATE) {
 465         program_interrupt(env, PGM_PRIVILEGED, 4);
 466         return 0;
 467     }
 468
 469     if (r2 & 0x1) {
 470         program_interrupt(env, PGM_SPECIFICATION, 4);
 471         return 0;
 472     }
 473
 474     fh = env->regs[r2] >> 32;
 475     pcias = (env->regs[r2] >> 16) & 0xf;
 476     len = env->regs[r2] & 0xf;
 477     offset = env->regs[r2 + 1];
 478
 479     pbdev = s390_pci_find_dev_by_fh(s390_get_phb(), fh);
 480     if (!pbdev) {
 481         DPRINTF("pcistg no pci dev\n");
 482         setcc(cpu, ZPCI_PCI_LS_INVAL_HANDLE);
 483         return 0;
 484     }
 485
 486     switch (pbdev->state) {
 487     case ZPCI_FS_RESERVED:
 488     case ZPCI_FS_STANDBY:
 489     case ZPCI_FS_DISABLED:
 490     case ZPCI_FS_PERMANENT_ERROR:
 491         setcc(cpu, ZPCI_PCI_LS_INVAL_HANDLE);
 492         return 0;
 493     case ZPCI_FS_ERROR:
 494         setcc(cpu, ZPCI_PCI_LS_ERR);
 495         s390_set_status_code(env, r2, ZPCI_PCI_ST_BLOCKED);
 496         return 0;
 497     default:
 498         break;
 499     }
 500
 501     data = env->regs[r1];
 502     if (pcias < 6) {
 503         if ((8 - (offset & 0x7)) < len) {
 504             program_interrupt(env, PGM_OPERAND, 4);
 505             return 0;
 506         }
 507
 508         if (trap_msix(pbdev, offset, pcias)) {
 509             offset = offset - pbdev->msix.table_offset;
 510             mr = &pbdev->pdev->msix_table_mmio;
 511             update_msix_table_msg_data(pbdev, offset, &data, len);
 512         } else {
 513             mr = pbdev->pdev->io_regions[pcias].memory;
 514         }
 515
 516         result = memory_region_dispatch_write(mr, offset, data, len,
 517                                      MEMTXATTRS_UNSPECIFIED);
 518         if (result != MEMTX_OK) {
 519             program_interrupt(env, PGM_OPERAND, 4);
 520             return 0;
 521         }
 522     } else if (pcias == 15) {
 523         if ((4 - (offset & 0x3)) < len) {
 524             program_interrupt(env, PGM_OPERAND, 4);
 525             return 0;
 526         }
 527         switch (len) {
 528         case 1:
 529             break;
 530         case 2:
 531             data = bswap16(data);
 532             break;
 533         case 4:
 534             data = bswap32(data);
 535             break;
 536         case 8:
 537             data = bswap64(data);
 538             break;
 539         default:
 540             program_interrupt(env, PGM_OPERAND, 4);
 541             return 0;
 542         }
 543
 544         pci_host_config_write_common(pbdev->pdev, offset,
 545                                      pci_config_size(pbdev->pdev),
 546                                      data, len);
 547     } else {
 548         DPRINTF("pcistg invalid space\n");
 549         setcc(cpu, ZPCI_PCI_LS_ERR);
 550         s390_set_status_code(env, r2, ZPCI_PCI_ST_INVAL_AS);
 551         return 0;
 552     }
 553
 554     setcc(cpu, ZPCI_PCI_LS_OK);
 555     return 0;
 556 }
 557
 558 int rpcit_service_call(S390CPU *cpu, uint8_t r1, uint8_t r2)
 559 {
 560     CPUS390XState *env = &cpu->env;
 561     uint32_t fh;
 562     S390PCIBusDevice *pbdev;
 563     S390PCIIOMMU *iommu;
 564     hwaddr start, end;
 565     IOMMUTLBEntry entry;
 566     IOMMUMemoryRegion *iommu_mr;
 567     IOMMUMemoryRegionClass *imrc;
 568
 569     cpu_synchronize_state(CPU(cpu));
 570
 571     if (env->psw.mask & PSW_MASK_PSTATE) {
 572         program_interrupt(env, PGM_PRIVILEGED, 4);
 573         goto out;
 574     }
 575
 576     if (r2 & 0x1) {
 577         program_interrupt(env, PGM_SPECIFICATION, 4);
 578         goto out;
 579     }
 580
 581     fh = env->regs[r1] >> 32;
 582     start = env->regs[r2];
 583     end = start + env->regs[r2 + 1];
 584
 585     pbdev = s390_pci_find_dev_by_fh(s390_get_phb(), fh);
 586     if (!pbdev) {
 587         DPRINTF("rpcit no pci dev\n");
 588         setcc(cpu, ZPCI_PCI_LS_INVAL_HANDLE);
 589         goto out;
 590     }
 591
 592     switch (pbdev->state) {
 593     case ZPCI_FS_RESERVED:
 594     case ZPCI_FS_STANDBY:
 595     case ZPCI_FS_DISABLED:
 596     case ZPCI_FS_PERMANENT_ERROR:
 597         setcc(cpu, ZPCI_PCI_LS_INVAL_HANDLE);
 598         return 0;
 599     case ZPCI_FS_ERROR:
 600         setcc(cpu, ZPCI_PCI_LS_ERR);
 601         s390_set_status_code(env, r1, ZPCI_MOD_ST_ERROR_RECOVER);
 602         return 0;
 603     default:
 604         break;
 605     }
 606
 607     iommu = pbdev->iommu;
 608     if (!iommu->g_iota) {
 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_INVALAS, pbdev->fh, pbdev->fid,
 613                                       start, 0);
 614         goto out;
 615     }
 616
 617     if (end < iommu->pba || start > iommu->pal) {
 618         pbdev->state = ZPCI_FS_ERROR;
 619         setcc(cpu, ZPCI_PCI_LS_ERR);
 620         s390_set_status_code(env, r1, ZPCI_PCI_ST_INSUF_RES);
 621         s390_pci_generate_error_event(ERR_EVENT_OORANGE, pbdev->fh, pbdev->fid,
 622                                       start, 0);
 623         goto out;
 624     }
 625
 626     iommu_mr = &iommu->iommu_mr;
 627     imrc = IOMMU_MEMORY_REGION_GET_CLASS(iommu_mr);
 628
 629     while (start < end) {
 630         entry = imrc->translate(iommu_mr, start, IOMMU_NONE);
 631
 632         if (!entry.translated_addr) {
 633             pbdev->state = ZPCI_FS_ERROR;
 634             setcc(cpu, ZPCI_PCI_LS_ERR);
 635             s390_set_status_code(env, r1, ZPCI_PCI_ST_INSUF_RES);
 636             s390_pci_generate_error_event(ERR_EVENT_SERR, pbdev->fh, pbdev->fid,
 637                                           start, ERR_EVENT_Q_BIT);
 638             goto out;
 639         }
 640
 641         memory_region_notify_iommu(iommu_mr, entry);
 642         start += entry.addr_mask + 1;
 643     }
 644
 645     setcc(cpu, ZPCI_PCI_LS_OK);
 646 out:
 647     return 0;
 648 }
 649
 650 int pcistb_service_call(S390CPU *cpu, uint8_t r1, uint8_t r3, uint64_t gaddr,
 651                         uint8_t ar)
 652 {
 653     CPUS390XState *env = &cpu->env;
 654     S390PCIBusDevice *pbdev;
 655     MemoryRegion *mr;
 656     MemTxResult result;
 657     int i;
 658     uint32_t fh;
 659     uint8_t pcias;
 660     uint8_t len;
 661     uint8_t buffer[128];
 662
 663     if (env->psw.mask & PSW_MASK_PSTATE) {
 664         program_interrupt(env, PGM_PRIVILEGED, 6);
 665         return 0;
 666     }
 667
 668     fh = env->regs[r1] >> 32;
 669     pcias = (env->regs[r1] >> 16) & 0xf;
 670     len = env->regs[r1] & 0xff;
 671
 672     if (pcias > 5) {
 673         DPRINTF("pcistb invalid space\n");
 674         setcc(cpu, ZPCI_PCI_LS_ERR);
 675         s390_set_status_code(env, r1, ZPCI_PCI_ST_INVAL_AS);
 676         return 0;
 677     }
 678
 679     switch (len) {
 680     case 16:
 681     case 32:
 682     case 64:
 683     case 128:
 684         break;
 685     default:
 686         program_interrupt(env, PGM_SPECIFICATION, 6);
 687         return 0;
 688     }
 689
 690     pbdev = s390_pci_find_dev_by_fh(s390_get_phb(), fh);
 691     if (!pbdev) {
 692         DPRINTF("pcistb no pci dev fh 0x%x\n", fh);
 693         setcc(cpu, ZPCI_PCI_LS_INVAL_HANDLE);
 694         return 0;
 695     }
 696
 697     switch (pbdev->state) {
 698     case ZPCI_FS_RESERVED:
 699     case ZPCI_FS_STANDBY:
 700     case ZPCI_FS_DISABLED:
 701     case ZPCI_FS_PERMANENT_ERROR:
 702         setcc(cpu, ZPCI_PCI_LS_INVAL_HANDLE);
 703         return 0;
 704     case ZPCI_FS_ERROR:
 705         setcc(cpu, ZPCI_PCI_LS_ERR);
 706         s390_set_status_code(env, r1, ZPCI_PCI_ST_BLOCKED);
 707         return 0;
 708     default:
 709         break;
 710     }
 711
 712     mr = pbdev->pdev->io_regions[pcias].memory;
 713     if (!memory_region_access_valid(mr, env->regs[r3], len, true)) {
 714         program_interrupt(env, PGM_OPERAND, 6);
 715         return 0;
 716     }
 717
 718     if (s390_cpu_virt_mem_read(cpu, gaddr, ar, buffer, len)) {
 719         return 0;
 720     }
 721
 722     for (i = 0; i < len / 8; i++) {
 723         result = memory_region_dispatch_write(mr, env->regs[r3] + i * 8,
 724                                      ldq_p(buffer + i * 8), 8,
 725                                      MEMTXATTRS_UNSPECIFIED);
 726         if (result != MEMTX_OK) {
 727             program_interrupt(env, PGM_OPERAND, 6);
 728             return 0;
 729         }
 730     }
 731
 732     setcc(cpu, ZPCI_PCI_LS_OK);
 733     return 0;
 734 }
 735
 736 static int reg_irqs(CPUS390XState *env, S390PCIBusDevice *pbdev, ZpciFib fib)
 737 {
 738     int ret, len;
 739     uint8_t isc = FIB_DATA_ISC(ldl_p(&fib.data));
 740
 741     pbdev->routes.adapter.adapter_id = css_get_adapter_id(
 742                                        CSS_IO_ADAPTER_PCI, isc);
 743     pbdev->summary_ind = get_indicator(ldq_p(&fib.aisb), sizeof(uint64_t));
 744     len = BITS_TO_LONGS(FIB_DATA_NOI(ldl_p(&fib.data))) * sizeof(unsigned long);
 745     pbdev->indicator = get_indicator(ldq_p(&fib.aibv), len);
 746
 747     ret = map_indicator(&pbdev->routes.adapter, pbdev->summary_ind);
 748     if (ret) {
 749         goto out;
 750     }
 751
 752     ret = map_indicator(&pbdev->routes.adapter, pbdev->indicator);
 753     if (ret) {
 754         goto out;
 755     }
 756
 757     pbdev->routes.adapter.summary_addr = ldq_p(&fib.aisb);
 758     pbdev->routes.adapter.summary_offset = FIB_DATA_AISBO(ldl_p(&fib.data));
 759     pbdev->routes.adapter.ind_addr = ldq_p(&fib.aibv);
 760     pbdev->routes.adapter.ind_offset = FIB_DATA_AIBVO(ldl_p(&fib.data));
 761     pbdev->isc = isc;
 762     pbdev->noi = FIB_DATA_NOI(ldl_p(&fib.data));
 763     pbdev->sum = FIB_DATA_SUM(ldl_p(&fib.data));
 764
 765     DPRINTF("reg_irqs adapter id %d\n", pbdev->routes.adapter.adapter_id);
 766     return 0;
 767 out:
 768     release_indicator(&pbdev->routes.adapter, pbdev->summary_ind);
 769     release_indicator(&pbdev->routes.adapter, pbdev->indicator);
 770     pbdev->summary_ind = NULL;
 771     pbdev->indicator = NULL;
 772     return ret;
 773 }
 774
 775 int pci_dereg_irqs(S390PCIBusDevice *pbdev)
 776 {
 777     release_indicator(&pbdev->routes.adapter, pbdev->summary_ind);
 778     release_indicator(&pbdev->routes.adapter, pbdev->indicator);
 779
 780     pbdev->summary_ind = NULL;
 781     pbdev->indicator = NULL;
 782     pbdev->routes.adapter.summary_addr = 0;
 783     pbdev->routes.adapter.summary_offset = 0;
 784     pbdev->routes.adapter.ind_addr = 0;
 785     pbdev->routes.adapter.ind_offset = 0;
 786     pbdev->isc = 0;
 787     pbdev->noi = 0;
 788     pbdev->sum = 0;
 789
 790     DPRINTF("dereg_irqs adapter id %d\n", pbdev->routes.adapter.adapter_id);
 791     return 0;
 792 }
 793
 794 static int reg_ioat(CPUS390XState *env, S390PCIIOMMU *iommu, ZpciFib fib)
 795 {
 796     uint64_t pba = ldq_p(&fib.pba);
 797     uint64_t pal = ldq_p(&fib.pal);
 798     uint64_t g_iota = ldq_p(&fib.iota);
 799     uint8_t dt = (g_iota >> 2) & 0x7;
 800     uint8_t t = (g_iota >> 11) & 0x1;
 801
 802     if (pba > pal || pba < ZPCI_SDMA_ADDR || pal > ZPCI_EDMA_ADDR) {
 803         program_interrupt(env, PGM_OPERAND, 6);
 804         return -EINVAL;
 805     }
 806
 807     /* currently we only support designation type 1 with translation */
 808     if (!(dt == ZPCI_IOTA_RTTO && t)) {
 809         error_report("unsupported ioat dt %d t %d", dt, t);
 810         program_interrupt(env, PGM_OPERAND, 6);
 811         return -EINVAL;
 812     }
 813
 814     iommu->pba = pba;
 815     iommu->pal = pal;
 816     iommu->g_iota = g_iota;
 817
 818     s390_pci_iommu_enable(iommu);
 819
 820     return 0;
 821 }
 822
 823 void pci_dereg_ioat(S390PCIIOMMU *iommu)
 824 {
 825     s390_pci_iommu_disable(iommu);
 826     iommu->pba = 0;
 827     iommu->pal = 0;
 828     iommu->g_iota = 0;
 829 }
 830
 831 int mpcifc_service_call(S390CPU *cpu, uint8_t r1, uint64_t fiba, uint8_t ar)
 832 {
 833     CPUS390XState *env = &cpu->env;
 834     uint8_t oc, dmaas;
 835     uint32_t fh;
 836     ZpciFib fib;
 837     S390PCIBusDevice *pbdev;
 838     uint64_t cc = ZPCI_PCI_LS_OK;
 839
 840     if (env->psw.mask & PSW_MASK_PSTATE) {
 841         program_interrupt(env, PGM_PRIVILEGED, 6);
 842         return 0;
 843     }
 844
 845     oc = env->regs[r1] & 0xff;
 846     dmaas = (env->regs[r1] >> 16) & 0xff;
 847     fh = env->regs[r1] >> 32;
 848
 849     if (fiba & 0x7) {
 850         program_interrupt(env, PGM_SPECIFICATION, 6);
 851         return 0;
 852     }
 853
 854     pbdev = s390_pci_find_dev_by_fh(s390_get_phb(), fh);
 855     if (!pbdev) {
 856         DPRINTF("mpcifc no pci dev fh 0x%x\n", fh);
 857         setcc(cpu, ZPCI_PCI_LS_INVAL_HANDLE);
 858         return 0;
 859     }
 860
 861     switch (pbdev->state) {
 862     case ZPCI_FS_RESERVED:
 863     case ZPCI_FS_STANDBY:
 864     case ZPCI_FS_DISABLED:
 865     case ZPCI_FS_PERMANENT_ERROR:
 866         setcc(cpu, ZPCI_PCI_LS_INVAL_HANDLE);
 867         return 0;
 868     default:
 869         break;
 870     }
 871
 872     if (s390_cpu_virt_mem_read(cpu, fiba, ar, (uint8_t *)&fib, sizeof(fib))) {
 873         return 0;
 874     }
 875
 876     if (fib.fmt != 0) {
 877         program_interrupt(env, PGM_OPERAND, 6);
 878         return 0;
 879     }
 880
 881     switch (oc) {
 882     case ZPCI_MOD_FC_REG_INT:
 883         if (pbdev->summary_ind) {
 884             cc = ZPCI_PCI_LS_ERR;
 885             s390_set_status_code(env, r1, ZPCI_MOD_ST_SEQUENCE);
 886         } else if (reg_irqs(env, pbdev, fib)) {
 887             cc = ZPCI_PCI_LS_ERR;
 888             s390_set_status_code(env, r1, ZPCI_MOD_ST_RES_NOT_AVAIL);
 889         }
 890         break;
 891     case ZPCI_MOD_FC_DEREG_INT:
 892         if (!pbdev->summary_ind) {
 893             cc = ZPCI_PCI_LS_ERR;
 894             s390_set_status_code(env, r1, ZPCI_MOD_ST_SEQUENCE);
 895         } else {
 896             pci_dereg_irqs(pbdev);
 897         }
 898         break;
 899     case ZPCI_MOD_FC_REG_IOAT:
 900         if (dmaas != 0) {
 901             cc = ZPCI_PCI_LS_ERR;
 902             s390_set_status_code(env, r1, ZPCI_MOD_ST_DMAAS_INVAL);
 903         } else if (pbdev->iommu->enabled) {
 904             cc = ZPCI_PCI_LS_ERR;
 905             s390_set_status_code(env, r1, ZPCI_MOD_ST_SEQUENCE);
 906         } else if (reg_ioat(env, pbdev->iommu, fib)) {
 907             cc = ZPCI_PCI_LS_ERR;
 908             s390_set_status_code(env, r1, ZPCI_MOD_ST_INSUF_RES);
 909         }
 910         break;
 911     case ZPCI_MOD_FC_DEREG_IOAT:
 912         if (dmaas != 0) {
 913             cc = ZPCI_PCI_LS_ERR;
 914             s390_set_status_code(env, r1, ZPCI_MOD_ST_DMAAS_INVAL);
 915         } else if (!pbdev->iommu->enabled) {
 916             cc = ZPCI_PCI_LS_ERR;
 917             s390_set_status_code(env, r1, ZPCI_MOD_ST_SEQUENCE);
 918         } else {
 919             pci_dereg_ioat(pbdev->iommu);
 920         }
 921         break;
 922     case ZPCI_MOD_FC_REREG_IOAT:
 923         if (dmaas != 0) {
 924             cc = ZPCI_PCI_LS_ERR;
 925             s390_set_status_code(env, r1, ZPCI_MOD_ST_DMAAS_INVAL);
 926         } else if (!pbdev->iommu->enabled) {
 927             cc = ZPCI_PCI_LS_ERR;
 928             s390_set_status_code(env, r1, ZPCI_MOD_ST_SEQUENCE);
 929         } else {
 930             pci_dereg_ioat(pbdev->iommu);
 931             if (reg_ioat(env, pbdev->iommu, fib)) {
 932                 cc = ZPCI_PCI_LS_ERR;
 933                 s390_set_status_code(env, r1, ZPCI_MOD_ST_INSUF_RES);
 934             }
 935         }
 936         break;
 937     case ZPCI_MOD_FC_RESET_ERROR:
 938         switch (pbdev->state) {
 939         case ZPCI_FS_BLOCKED:
 940         case ZPCI_FS_ERROR:
 941             pbdev->state = ZPCI_FS_ENABLED;
 942             break;
 943         default:
 944             cc = ZPCI_PCI_LS_ERR;
 945             s390_set_status_code(env, r1, ZPCI_MOD_ST_SEQUENCE);
 946         }
 947         break;
 948     case ZPCI_MOD_FC_RESET_BLOCK:
 949         switch (pbdev->state) {
 950         case ZPCI_FS_ERROR:
 951             pbdev->state = ZPCI_FS_BLOCKED;
 952             break;
 953         default:
 954             cc = ZPCI_PCI_LS_ERR;
 955             s390_set_status_code(env, r1, ZPCI_MOD_ST_SEQUENCE);
 956         }
 957         break;
 958     case ZPCI_MOD_FC_SET_MEASURE:
 959         pbdev->fmb_addr = ldq_p(&fib.fmb_addr);
 960         break;
 961     default:
 962         program_interrupt(&cpu->env, PGM_OPERAND, 6);
 963         cc = ZPCI_PCI_LS_ERR;
 964     }
 965
 966     setcc(cpu, cc);
 967     return 0;
 968 }
 969
 970 int stpcifc_service_call(S390CPU *cpu, uint8_t r1, uint64_t fiba, uint8_t ar)
 971 {
 972     CPUS390XState *env = &cpu->env;
 973     uint8_t dmaas;
 974     uint32_t fh;
 975     ZpciFib fib;
 976     S390PCIBusDevice *pbdev;
 977     uint32_t data;
 978     uint64_t cc = ZPCI_PCI_LS_OK;
 979
 980     if (env->psw.mask & PSW_MASK_PSTATE) {
 981         program_interrupt(env, PGM_PRIVILEGED, 6);
 982         return 0;
 983     }
 984
 985     fh = env->regs[r1] >> 32;
 986     dmaas = (env->regs[r1] >> 16) & 0xff;
 987
 988     if (dmaas) {
 989         setcc(cpu, ZPCI_PCI_LS_ERR);
 990         s390_set_status_code(env, r1, ZPCI_STPCIFC_ST_INVAL_DMAAS);
 991         return 0;
 992     }
 993
 994     if (fiba & 0x7) {
 995         program_interrupt(env, PGM_SPECIFICATION, 6);
 996         return 0;
 997     }
 998
 999     pbdev = s390_pci_find_dev_by_idx(s390_get_phb(), fh & FH_MASK_INDEX);
1000     if (!pbdev) {
1001         setcc(cpu, ZPCI_PCI_LS_INVAL_HANDLE);
1002         return 0;
1003     }
1004
1005     memset(&fib, 0, sizeof(fib));
1006
1007     switch (pbdev->state) {
1008     case ZPCI_FS_RESERVED:
1009     case ZPCI_FS_STANDBY:
1010         setcc(cpu, ZPCI_PCI_LS_INVAL_HANDLE);
1011         return 0;
1012     case ZPCI_FS_DISABLED:
1013         if (fh & FH_MASK_ENABLE) {
1014             setcc(cpu, ZPCI_PCI_LS_INVAL_HANDLE);
1015             return 0;
1016         }
1017         goto out;
1018     /* BLOCKED bit is set to one coincident with the setting of ERROR bit.
1019      * FH Enabled bit is set to one in states of ENABLED, BLOCKED or ERROR. */
1020     case ZPCI_FS_ERROR:
1021         fib.fc |= 0x20;
1022     case ZPCI_FS_BLOCKED:
1023         fib.fc |= 0x40;
1024     case ZPCI_FS_ENABLED:
1025         fib.fc |= 0x80;
1026         if (pbdev->iommu->enabled) {
1027             fib.fc |= 0x10;
1028         }
1029         if (!(fh & FH_MASK_ENABLE)) {
1030             env->regs[r1] |= 1ULL << 63;
1031         }
1032         break;
1033     case ZPCI_FS_PERMANENT_ERROR:
1034         setcc(cpu, ZPCI_PCI_LS_ERR);
1035         s390_set_status_code(env, r1, ZPCI_STPCIFC_ST_PERM_ERROR);
1036         return 0;
1037     }
1038
1039     stq_p(&fib.pba, pbdev->iommu->pba);
1040     stq_p(&fib.pal, pbdev->iommu->pal);
1041     stq_p(&fib.iota, pbdev->iommu->g_iota);
1042     stq_p(&fib.aibv, pbdev->routes.adapter.ind_addr);
1043     stq_p(&fib.aisb, pbdev->routes.adapter.summary_addr);
1044     stq_p(&fib.fmb_addr, pbdev->fmb_addr);
1045
1046     data = ((uint32_t)pbdev->isc << 28) | ((uint32_t)pbdev->noi << 16) |
1047            ((uint32_t)pbdev->routes.adapter.ind_offset << 8) |
1048            ((uint32_t)pbdev->sum << 7) | pbdev->routes.adapter.summary_offset;
1049     stl_p(&fib.data, data);
1050
1051 out:
1052     if (s390_cpu_virt_mem_write(cpu, fiba, ar, (uint8_t *)&fib, sizeof(fib))) {
1053         return 0;
1054     }
1055
1056     setcc(cpu, cc);
1057     return 0;
1058 }