| 1 | /* |
| 2 | * s390 PCI BUS |
| 3 | * |
| 4 | * Copyright 2014 IBM Corp. |
| 5 | * Author(s): Frank Blaschka <frank.blaschka@de.ibm.com> |
| 6 | * Hong Bo Li <lihbbj@cn.ibm.com> |
| 7 | * Yi Min Zhao <zyimin@cn.ibm.com> |
| 8 | * |
| 9 | * This work is licensed under the terms of the GNU GPL, version 2 or (at |
| 10 | * your option) any later version. See the COPYING file in the top-level |
| 11 | * directory. |
| 12 | */ |
| 13 | |
| 14 | #include "qemu/osdep.h" |
| 15 | #include "qapi/error.h" |
| 16 | #include "qapi/visitor.h" |
| 17 | #include "exec/target_page.h" |
| 18 | #include "hw/s390x/s390-pci-bus.h" |
| 19 | #include "hw/s390x/s390-pci-inst.h" |
| 20 | #include "hw/s390x/s390-pci-kvm.h" |
| 21 | #include "hw/s390x/s390-pci-vfio.h" |
| 22 | #include "hw/s390x/s390-virtio-ccw.h" |
| 23 | #include "hw/core/boards.h" |
| 24 | #include "hw/pci/pci_bus.h" |
| 25 | #include "hw/core/qdev-properties.h" |
| 26 | #include "hw/pci/pci_bridge.h" |
| 27 | #include "hw/pci/msi.h" |
| 28 | #include "exec/cpu-common.h" |
| 29 | #include "qemu/error-report.h" |
| 30 | #include "qemu/module.h" |
| 31 | #include "system/physmem.h" |
| 32 | #include "system/reset.h" |
| 33 | #include "system/runstate.h" |
| 34 | |
| 35 | #include "trace.h" |
| 36 | |
| 37 | S390pciState *s390_get_phb(void) |
| 38 | { |
| 39 | static S390pciState *phb; |
| 40 | |
| 41 | if (!phb) { |
| 42 | phb = S390_PCI_HOST_BRIDGE( |
| 43 | object_resolve_path(TYPE_S390_PCI_HOST_BRIDGE, NULL)); |
| 44 | assert(phb != NULL); |
| 45 | } |
| 46 | |
| 47 | return phb; |
| 48 | } |
| 49 | |
| 50 | int pci_chsc_sei_nt2_get_event(void *res) |
| 51 | { |
| 52 | ChscSeiNt2Res *nt2_res = (ChscSeiNt2Res *)res; |
| 53 | PciCcdfAvail *accdf; |
| 54 | PciCcdfErr *eccdf; |
| 55 | int rc = 1; |
| 56 | SeiContainer *sei_cont; |
| 57 | S390pciState *s = s390_get_phb(); |
| 58 | |
| 59 | sei_cont = QTAILQ_FIRST(&s->pending_sei); |
| 60 | if (sei_cont) { |
| 61 | QTAILQ_REMOVE(&s->pending_sei, sei_cont, link); |
| 62 | nt2_res->nt = 2; |
| 63 | nt2_res->cc = sei_cont->cc; |
| 64 | nt2_res->length = cpu_to_be16(sizeof(ChscSeiNt2Res)); |
| 65 | switch (sei_cont->cc) { |
| 66 | case 1: /* error event */ |
| 67 | eccdf = (PciCcdfErr *)nt2_res->ccdf; |
| 68 | eccdf->fid = cpu_to_be32(sei_cont->fid); |
| 69 | eccdf->fh = cpu_to_be32(sei_cont->fh); |
| 70 | eccdf->e = cpu_to_be32(sei_cont->e); |
| 71 | eccdf->faddr = cpu_to_be64(sei_cont->faddr); |
| 72 | eccdf->pec = cpu_to_be16(sei_cont->pec); |
| 73 | break; |
| 74 | case 2: /* availability event */ |
| 75 | accdf = (PciCcdfAvail *)nt2_res->ccdf; |
| 76 | accdf->fid = cpu_to_be32(sei_cont->fid); |
| 77 | accdf->fh = cpu_to_be32(sei_cont->fh); |
| 78 | accdf->pec = cpu_to_be16(sei_cont->pec); |
| 79 | break; |
| 80 | default: |
| 81 | abort(); |
| 82 | } |
| 83 | g_free(sei_cont); |
| 84 | rc = 0; |
| 85 | } |
| 86 | |
| 87 | return rc; |
| 88 | } |
| 89 | |
| 90 | int pci_chsc_sei_nt2_have_event(void) |
| 91 | { |
| 92 | S390pciState *s = s390_get_phb(); |
| 93 | |
| 94 | return !QTAILQ_EMPTY(&s->pending_sei); |
| 95 | } |
| 96 | |
| 97 | S390PCIBusDevice *s390_pci_find_next_avail_dev(S390pciState *s, |
| 98 | S390PCIBusDevice *pbdev) |
| 99 | { |
| 100 | S390PCIBusDevice *ret = pbdev ? QTAILQ_NEXT(pbdev, link) : |
| 101 | QTAILQ_FIRST(&s->zpci_devs); |
| 102 | |
| 103 | while (ret && ret->state == ZPCI_FS_RESERVED) { |
| 104 | ret = QTAILQ_NEXT(ret, link); |
| 105 | } |
| 106 | |
| 107 | return ret; |
| 108 | } |
| 109 | |
| 110 | S390PCIBusDevice *s390_pci_find_dev_by_fid(S390pciState *s, uint32_t fid) |
| 111 | { |
| 112 | S390PCIBusDevice *pbdev; |
| 113 | |
| 114 | QTAILQ_FOREACH(pbdev, &s->zpci_devs, link) { |
| 115 | if (pbdev->fid == fid) { |
| 116 | return pbdev; |
| 117 | } |
| 118 | } |
| 119 | |
| 120 | return NULL; |
| 121 | } |
| 122 | |
| 123 | void s390_pci_sclp_configure(SCCB *sccb) |
| 124 | { |
| 125 | IoaCfgSccb *psccb = (IoaCfgSccb *)sccb; |
| 126 | S390PCIBusDevice *pbdev = s390_pci_find_dev_by_fid(s390_get_phb(), |
| 127 | be32_to_cpu(psccb->aid)); |
| 128 | uint16_t rc; |
| 129 | |
| 130 | if (!pbdev) { |
| 131 | trace_s390_pci_sclp_nodev("configure", be32_to_cpu(psccb->aid)); |
| 132 | rc = SCLP_RC_ADAPTER_ID_NOT_RECOGNIZED; |
| 133 | goto out; |
| 134 | } |
| 135 | |
| 136 | switch (pbdev->state) { |
| 137 | case ZPCI_FS_RESERVED: |
| 138 | rc = SCLP_RC_ADAPTER_IN_RESERVED_STATE; |
| 139 | break; |
| 140 | case ZPCI_FS_STANDBY: |
| 141 | pbdev->state = ZPCI_FS_DISABLED; |
| 142 | rc = SCLP_RC_NORMAL_COMPLETION; |
| 143 | break; |
| 144 | default: |
| 145 | rc = SCLP_RC_NO_ACTION_REQUIRED; |
| 146 | } |
| 147 | out: |
| 148 | psccb->header.response_code = cpu_to_be16(rc); |
| 149 | } |
| 150 | |
| 151 | static void s390_pci_shutdown_notifier(Notifier *n, void *opaque) |
| 152 | { |
| 153 | S390PCIBusDevice *pbdev = container_of(n, S390PCIBusDevice, |
| 154 | shutdown_notifier); |
| 155 | |
| 156 | pci_device_reset(pbdev->pdev); |
| 157 | } |
| 158 | |
| 159 | static void s390_pci_perform_unplug(S390PCIBusDevice *pbdev) |
| 160 | { |
| 161 | HotplugHandler *hotplug_ctrl; |
| 162 | |
| 163 | if (pbdev->pft == ZPCI_PFT_ISM) { |
| 164 | notifier_remove(&pbdev->shutdown_notifier); |
| 165 | } |
| 166 | |
| 167 | /* Unplug the PCI device */ |
| 168 | if (pbdev->pdev) { |
| 169 | DeviceState *pdev = DEVICE(pbdev->pdev); |
| 170 | |
| 171 | hotplug_ctrl = qdev_get_hotplug_handler(pdev); |
| 172 | hotplug_handler_unplug(hotplug_ctrl, pdev, &error_abort); |
| 173 | object_unparent(OBJECT(pdev)); |
| 174 | } |
| 175 | |
| 176 | /* Unplug the zPCI device */ |
| 177 | hotplug_ctrl = qdev_get_hotplug_handler(DEVICE(pbdev)); |
| 178 | hotplug_handler_unplug(hotplug_ctrl, DEVICE(pbdev), &error_abort); |
| 179 | object_unparent(OBJECT(pbdev)); |
| 180 | } |
| 181 | |
| 182 | void s390_pci_sclp_deconfigure(SCCB *sccb) |
| 183 | { |
| 184 | IoaCfgSccb *psccb = (IoaCfgSccb *)sccb; |
| 185 | S390PCIBusDevice *pbdev = s390_pci_find_dev_by_fid(s390_get_phb(), |
| 186 | be32_to_cpu(psccb->aid)); |
| 187 | uint16_t rc; |
| 188 | |
| 189 | if (!pbdev) { |
| 190 | trace_s390_pci_sclp_nodev("deconfigure", be32_to_cpu(psccb->aid)); |
| 191 | rc = SCLP_RC_ADAPTER_ID_NOT_RECOGNIZED; |
| 192 | goto out; |
| 193 | } |
| 194 | |
| 195 | switch (pbdev->state) { |
| 196 | case ZPCI_FS_RESERVED: |
| 197 | rc = SCLP_RC_ADAPTER_IN_RESERVED_STATE; |
| 198 | break; |
| 199 | case ZPCI_FS_STANDBY: |
| 200 | rc = SCLP_RC_NO_ACTION_REQUIRED; |
| 201 | break; |
| 202 | default: |
| 203 | if (pbdev->interp && (pbdev->fh & FH_MASK_ENABLE)) { |
| 204 | /* Interpreted devices were using interrupt forwarding */ |
| 205 | s390_pci_kvm_aif_disable(pbdev); |
| 206 | } else if (pbdev->summary_ind) { |
| 207 | pci_dereg_irqs(pbdev); |
| 208 | } |
| 209 | if (pbdev->iommu->enabled) { |
| 210 | pci_dereg_ioat(pbdev->iommu); |
| 211 | } |
| 212 | pbdev->state = ZPCI_FS_STANDBY; |
| 213 | rc = SCLP_RC_NORMAL_COMPLETION; |
| 214 | |
| 215 | if (pbdev->unplug_requested) { |
| 216 | s390_pci_perform_unplug(pbdev); |
| 217 | } |
| 218 | } |
| 219 | out: |
| 220 | psccb->header.response_code = cpu_to_be16(rc); |
| 221 | } |
| 222 | |
| 223 | static S390PCIBusDevice *s390_pci_find_dev_by_uid(S390pciState *s, uint16_t uid) |
| 224 | { |
| 225 | S390PCIBusDevice *pbdev; |
| 226 | |
| 227 | QTAILQ_FOREACH(pbdev, &s->zpci_devs, link) { |
| 228 | if (pbdev->uid == uid) { |
| 229 | return pbdev; |
| 230 | } |
| 231 | } |
| 232 | |
| 233 | return NULL; |
| 234 | } |
| 235 | |
| 236 | S390PCIBusDevice *s390_pci_find_dev_by_target(S390pciState *s, |
| 237 | const char *target) |
| 238 | { |
| 239 | S390PCIBusDevice *pbdev; |
| 240 | |
| 241 | if (!target) { |
| 242 | return NULL; |
| 243 | } |
| 244 | |
| 245 | QTAILQ_FOREACH(pbdev, &s->zpci_devs, link) { |
| 246 | if (!strcmp(pbdev->target, target)) { |
| 247 | return pbdev; |
| 248 | } |
| 249 | } |
| 250 | |
| 251 | return NULL; |
| 252 | } |
| 253 | |
| 254 | S390PCIBusDevice *s390_pci_find_dev_by_pci(S390pciState *s, PCIDevice *pci_dev) |
| 255 | { |
| 256 | S390PCIBusDevice *pbdev; |
| 257 | |
| 258 | if (!pci_dev) { |
| 259 | return NULL; |
| 260 | } |
| 261 | |
| 262 | QTAILQ_FOREACH(pbdev, &s->zpci_devs, link) { |
| 263 | if (pbdev->pdev == pci_dev) { |
| 264 | return pbdev; |
| 265 | } |
| 266 | } |
| 267 | |
| 268 | return NULL; |
| 269 | } |
| 270 | |
| 271 | S390PCIBusDevice *s390_pci_find_dev_by_idx(S390pciState *s, uint32_t idx) |
| 272 | { |
| 273 | return g_hash_table_lookup(s->zpci_table, &idx); |
| 274 | } |
| 275 | |
| 276 | S390PCIBusDevice *s390_pci_find_dev_by_fh(S390pciState *s, uint32_t fh) |
| 277 | { |
| 278 | uint32_t idx = FH_MASK_INDEX & fh; |
| 279 | S390PCIBusDevice *pbdev = s390_pci_find_dev_by_idx(s, idx); |
| 280 | |
| 281 | if (pbdev && pbdev->fh == fh) { |
| 282 | return pbdev; |
| 283 | } |
| 284 | |
| 285 | return NULL; |
| 286 | } |
| 287 | |
| 288 | static void s390_pci_generate_event(uint8_t cc, uint16_t pec, uint32_t fh, |
| 289 | uint32_t fid, uint64_t faddr, uint32_t e) |
| 290 | { |
| 291 | SeiContainer *sei_cont; |
| 292 | S390pciState *s = s390_get_phb(); |
| 293 | |
| 294 | sei_cont = g_new0(SeiContainer, 1); |
| 295 | sei_cont->fh = fh; |
| 296 | sei_cont->fid = fid; |
| 297 | sei_cont->cc = cc; |
| 298 | sei_cont->pec = pec; |
| 299 | sei_cont->faddr = faddr; |
| 300 | sei_cont->e = e; |
| 301 | |
| 302 | QTAILQ_INSERT_TAIL(&s->pending_sei, sei_cont, link); |
| 303 | css_generate_css_crws(0); |
| 304 | } |
| 305 | |
| 306 | static void s390_pci_generate_plug_event(uint16_t pec, uint32_t fh, |
| 307 | uint32_t fid) |
| 308 | { |
| 309 | s390_pci_generate_event(2, pec, fh, fid, 0, 0); |
| 310 | } |
| 311 | |
| 312 | void s390_pci_generate_error_event(uint16_t pec, uint32_t fh, uint32_t fid, |
| 313 | uint64_t faddr, uint32_t e) |
| 314 | { |
| 315 | s390_pci_generate_event(1, pec, fh, fid, faddr, e); |
| 316 | } |
| 317 | |
| 318 | static void s390_pci_set_irq(void *opaque, int irq, int level) |
| 319 | { |
| 320 | /* nothing to do */ |
| 321 | } |
| 322 | |
| 323 | static int s390_pci_map_irq(PCIDevice *pci_dev, int irq_num) |
| 324 | { |
| 325 | /* nothing to do */ |
| 326 | return 0; |
| 327 | } |
| 328 | |
| 329 | static uint64_t s390_pci_get_table_origin(uint64_t iota) |
| 330 | { |
| 331 | return iota & ~ZPCI_IOTA_RTTO_FLAG; |
| 332 | } |
| 333 | |
| 334 | static unsigned int calc_rtx(dma_addr_t ptr) |
| 335 | { |
| 336 | return ((unsigned long) ptr >> ZPCI_RT_SHIFT) & ZPCI_INDEX_MASK; |
| 337 | } |
| 338 | |
| 339 | static unsigned int calc_sx(dma_addr_t ptr) |
| 340 | { |
| 341 | return ((unsigned long) ptr >> ZPCI_ST_SHIFT) & ZPCI_INDEX_MASK; |
| 342 | } |
| 343 | |
| 344 | static unsigned int calc_px(dma_addr_t ptr) |
| 345 | { |
| 346 | return ((unsigned long) ptr >> TARGET_PAGE_BITS) & ZPCI_PT_MASK; |
| 347 | } |
| 348 | |
| 349 | static uint64_t get_rt_sto(uint64_t entry) |
| 350 | { |
| 351 | return ((entry & ZPCI_TABLE_TYPE_MASK) == ZPCI_TABLE_TYPE_RTX) |
| 352 | ? (entry & ZPCI_RTE_ADDR_MASK) |
| 353 | : 0; |
| 354 | } |
| 355 | |
| 356 | static uint64_t get_st_pto(uint64_t entry) |
| 357 | { |
| 358 | return ((entry & ZPCI_TABLE_TYPE_MASK) == ZPCI_TABLE_TYPE_SX) |
| 359 | ? (entry & ZPCI_STE_ADDR_MASK) |
| 360 | : 0; |
| 361 | } |
| 362 | |
| 363 | static bool rt_entry_isvalid(uint64_t entry) |
| 364 | { |
| 365 | return (entry & ZPCI_TABLE_VALID_MASK) == ZPCI_TABLE_VALID; |
| 366 | } |
| 367 | |
| 368 | static bool pt_entry_isvalid(uint64_t entry) |
| 369 | { |
| 370 | return (entry & ZPCI_PTE_VALID_MASK) == ZPCI_PTE_VALID; |
| 371 | } |
| 372 | |
| 373 | static bool entry_isprotected(uint64_t entry) |
| 374 | { |
| 375 | return (entry & ZPCI_TABLE_PROT_MASK) == ZPCI_TABLE_PROTECTED; |
| 376 | } |
| 377 | |
| 378 | /* ett is expected table type, -1 page table, 0 segment table, 1 region table */ |
| 379 | static uint64_t get_table_index(uint64_t iova, int8_t ett) |
| 380 | { |
| 381 | switch (ett) { |
| 382 | case ZPCI_ETT_PT: |
| 383 | return calc_px(iova); |
| 384 | case ZPCI_ETT_ST: |
| 385 | return calc_sx(iova); |
| 386 | case ZPCI_ETT_RT: |
| 387 | return calc_rtx(iova); |
| 388 | default: |
| 389 | g_assert_not_reached(); |
| 390 | } |
| 391 | } |
| 392 | |
| 393 | static bool entry_isvalid(uint64_t entry, int8_t ett) |
| 394 | { |
| 395 | switch (ett) { |
| 396 | case ZPCI_ETT_PT: |
| 397 | return pt_entry_isvalid(entry); |
| 398 | case ZPCI_ETT_ST: |
| 399 | case ZPCI_ETT_RT: |
| 400 | return rt_entry_isvalid(entry); |
| 401 | default: |
| 402 | g_assert_not_reached(); |
| 403 | } |
| 404 | } |
| 405 | |
| 406 | /* Return true if address translation is done */ |
| 407 | static bool translate_iscomplete(uint64_t entry, int8_t ett) |
| 408 | { |
| 409 | switch (ett) { |
| 410 | case ZPCI_ETT_ST: |
| 411 | return (entry & ZPCI_TABLE_FC) ? true : false; |
| 412 | case ZPCI_ETT_RT: |
| 413 | return false; |
| 414 | case ZPCI_ETT_PT: |
| 415 | return true; |
| 416 | default: |
| 417 | g_assert_not_reached(); |
| 418 | } |
| 419 | } |
| 420 | |
| 421 | static uint64_t get_frame_size(int8_t ett) |
| 422 | { |
| 423 | switch (ett) { |
| 424 | case ZPCI_ETT_PT: |
| 425 | return 1ULL << 12; |
| 426 | case ZPCI_ETT_ST: |
| 427 | return 1ULL << 20; |
| 428 | case ZPCI_ETT_RT: |
| 429 | return 1ULL << 31; |
| 430 | default: |
| 431 | g_assert_not_reached(); |
| 432 | } |
| 433 | } |
| 434 | |
| 435 | static uint64_t get_next_table_origin(uint64_t entry, int8_t ett) |
| 436 | { |
| 437 | switch (ett) { |
| 438 | case ZPCI_ETT_PT: |
| 439 | return entry & ZPCI_PTE_ADDR_MASK; |
| 440 | case ZPCI_ETT_ST: |
| 441 | return get_st_pto(entry); |
| 442 | case ZPCI_ETT_RT: |
| 443 | return get_rt_sto(entry); |
| 444 | default: |
| 445 | g_assert_not_reached(); |
| 446 | } |
| 447 | } |
| 448 | |
| 449 | /** |
| 450 | * table_translate: do translation within one table and return the following |
| 451 | * table origin |
| 452 | * |
| 453 | * @entry: the entry being translated, the result is stored in this. |
| 454 | * @to: the address of table origin. |
| 455 | * @ett: expected table type, 1 region table, 0 segment table and -1 page table. |
| 456 | * @error: error code |
| 457 | */ |
| 458 | static uint64_t table_translate(S390IOTLBEntry *entry, uint64_t to, int8_t ett, |
| 459 | uint16_t *error) |
| 460 | { |
| 461 | uint64_t tx, te, nto = 0; |
| 462 | uint16_t err = 0; |
| 463 | |
| 464 | tx = get_table_index(entry->iova, ett); |
| 465 | te = address_space_ldq_be(&address_space_memory, to + tx * sizeof(uint64_t), |
| 466 | MEMTXATTRS_UNSPECIFIED, NULL); |
| 467 | |
| 468 | if (!te) { |
| 469 | err = ERR_EVENT_INVALTE; |
| 470 | goto out; |
| 471 | } |
| 472 | |
| 473 | if (!entry_isvalid(te, ett)) { |
| 474 | entry->perm &= IOMMU_NONE; |
| 475 | goto out; |
| 476 | } |
| 477 | |
| 478 | if (ett == ZPCI_ETT_RT && ((te & ZPCI_TABLE_LEN_RTX) != ZPCI_TABLE_LEN_RTX |
| 479 | || te & ZPCI_TABLE_OFFSET_MASK)) { |
| 480 | err = ERR_EVENT_INVALTL; |
| 481 | goto out; |
| 482 | } |
| 483 | |
| 484 | nto = get_next_table_origin(te, ett); |
| 485 | if (!nto) { |
| 486 | err = ERR_EVENT_TT; |
| 487 | goto out; |
| 488 | } |
| 489 | |
| 490 | if (entry_isprotected(te)) { |
| 491 | entry->perm &= IOMMU_RO; |
| 492 | } else { |
| 493 | entry->perm &= IOMMU_RW; |
| 494 | } |
| 495 | |
| 496 | if (translate_iscomplete(te, ett)) { |
| 497 | switch (ett) { |
| 498 | case ZPCI_ETT_PT: |
| 499 | entry->translated_addr = te & ZPCI_PTE_ADDR_MASK; |
| 500 | break; |
| 501 | case ZPCI_ETT_ST: |
| 502 | entry->translated_addr = (te & ZPCI_SFAA_MASK) | |
| 503 | (entry->iova & ~ZPCI_SFAA_MASK); |
| 504 | break; |
| 505 | } |
| 506 | nto = 0; |
| 507 | } |
| 508 | out: |
| 509 | if (err) { |
| 510 | entry->perm = IOMMU_NONE; |
| 511 | *error = err; |
| 512 | } |
| 513 | entry->len = get_frame_size(ett); |
| 514 | return nto; |
| 515 | } |
| 516 | |
| 517 | uint16_t s390_guest_io_table_walk(uint64_t g_iota, hwaddr addr, |
| 518 | S390IOTLBEntry *entry) |
| 519 | { |
| 520 | uint64_t to = s390_pci_get_table_origin(g_iota); |
| 521 | int8_t ett = 1; |
| 522 | uint16_t error = 0; |
| 523 | |
| 524 | entry->iova = addr & TARGET_PAGE_MASK; |
| 525 | entry->translated_addr = 0; |
| 526 | entry->perm = IOMMU_RW; |
| 527 | |
| 528 | if (entry_isprotected(g_iota)) { |
| 529 | entry->perm &= IOMMU_RO; |
| 530 | } |
| 531 | |
| 532 | while (to) { |
| 533 | to = table_translate(entry, to, ett--, &error); |
| 534 | } |
| 535 | |
| 536 | return error; |
| 537 | } |
| 538 | |
| 539 | static IOMMUTLBEntry s390_translate_iommu(IOMMUMemoryRegion *mr, hwaddr addr, |
| 540 | IOMMUAccessFlags flag, int iommu_idx) |
| 541 | { |
| 542 | S390PCIIOMMU *iommu = container_of(mr, S390PCIIOMMU, iommu_mr); |
| 543 | S390IOTLBEntry *entry; |
| 544 | uint64_t iova = addr & TARGET_PAGE_MASK; |
| 545 | uint16_t error = 0; |
| 546 | IOMMUTLBEntry ret = { |
| 547 | .target_as = &address_space_memory, |
| 548 | .iova = 0, |
| 549 | .translated_addr = 0, |
| 550 | .addr_mask = ~(hwaddr)0, |
| 551 | .perm = IOMMU_NONE, |
| 552 | }; |
| 553 | |
| 554 | switch (iommu->pbdev->state) { |
| 555 | case ZPCI_FS_ENABLED: |
| 556 | case ZPCI_FS_BLOCKED: |
| 557 | if (!iommu->enabled) { |
| 558 | return ret; |
| 559 | } |
| 560 | break; |
| 561 | default: |
| 562 | return ret; |
| 563 | } |
| 564 | |
| 565 | trace_s390_pci_iommu_xlate(addr); |
| 566 | |
| 567 | if (addr < iommu->pba || addr > iommu->pal) { |
| 568 | error = ERR_EVENT_OORANGE; |
| 569 | goto err; |
| 570 | } |
| 571 | |
| 572 | entry = g_hash_table_lookup(iommu->iotlb, &iova); |
| 573 | if (entry) { |
| 574 | ret.iova = entry->iova; |
| 575 | ret.translated_addr = entry->translated_addr; |
| 576 | ret.addr_mask = entry->len - 1; |
| 577 | ret.perm = entry->perm; |
| 578 | } else { |
| 579 | ret.iova = iova; |
| 580 | ret.addr_mask = ~TARGET_PAGE_MASK; |
| 581 | ret.perm = IOMMU_NONE; |
| 582 | } |
| 583 | |
| 584 | if (flag != IOMMU_NONE && !(flag & ret.perm)) { |
| 585 | error = ERR_EVENT_TPROTE; |
| 586 | } |
| 587 | err: |
| 588 | if (error) { |
| 589 | iommu->pbdev->state = ZPCI_FS_ERROR; |
| 590 | s390_pci_generate_error_event(error, iommu->pbdev->fh, |
| 591 | iommu->pbdev->fid, addr, 0); |
| 592 | } |
| 593 | return ret; |
| 594 | } |
| 595 | |
| 596 | static void s390_pci_iommu_replay(IOMMUMemoryRegion *iommu, |
| 597 | IOMMUNotifier *notifier) |
| 598 | { |
| 599 | /* It's impossible to plug a pci device on s390x that already has iommu |
| 600 | * mappings which need to be replayed, that is due to the "one iommu per |
| 601 | * zpci device" construct. But when we support migration of vfio-pci |
| 602 | * devices in future, we need to revisit this. |
| 603 | */ |
| 604 | } |
| 605 | |
| 606 | static S390PCIIOMMU *s390_pci_get_iommu(S390pciState *s, PCIBus *bus, |
| 607 | int devfn) |
| 608 | { |
| 609 | uint64_t key = (uintptr_t)bus; |
| 610 | S390PCIIOMMUTable *table = g_hash_table_lookup(s->iommu_table, &key); |
| 611 | S390PCIIOMMU *iommu; |
| 612 | |
| 613 | if (!table) { |
| 614 | table = g_new0(S390PCIIOMMUTable, 1); |
| 615 | table->key = key; |
| 616 | g_hash_table_insert(s->iommu_table, &table->key, table); |
| 617 | } |
| 618 | |
| 619 | iommu = table->iommu[PCI_SLOT(devfn)]; |
| 620 | if (!iommu) { |
| 621 | iommu = S390_PCI_IOMMU(object_new(TYPE_S390_PCI_IOMMU)); |
| 622 | |
| 623 | char *mr_name = g_strdup_printf("iommu-root-%02x:%02x.%01x", |
| 624 | pci_bus_num(bus), |
| 625 | PCI_SLOT(devfn), |
| 626 | PCI_FUNC(devfn)); |
| 627 | char *as_name = g_strdup_printf("iommu-pci-%02x:%02x.%01x", |
| 628 | pci_bus_num(bus), |
| 629 | PCI_SLOT(devfn), |
| 630 | PCI_FUNC(devfn)); |
| 631 | memory_region_init(&iommu->mr, OBJECT(iommu), mr_name, UINT64_MAX); |
| 632 | address_space_init(&iommu->as, &iommu->mr, as_name); |
| 633 | iommu->iotlb = g_hash_table_new_full(g_int64_hash, g_int64_equal, |
| 634 | NULL, g_free); |
| 635 | table->iommu[PCI_SLOT(devfn)] = iommu; |
| 636 | |
| 637 | g_free(mr_name); |
| 638 | g_free(as_name); |
| 639 | } |
| 640 | |
| 641 | return iommu; |
| 642 | } |
| 643 | |
| 644 | static AddressSpace *s390_pci_dma_iommu(PCIBus *bus, void *opaque, int devfn) |
| 645 | { |
| 646 | S390pciState *s = opaque; |
| 647 | S390PCIIOMMU *iommu = s390_pci_get_iommu(s, bus, devfn); |
| 648 | |
| 649 | return &iommu->as; |
| 650 | } |
| 651 | |
| 652 | static const PCIIOMMUOps s390_iommu_ops = { |
| 653 | .get_address_space = s390_pci_dma_iommu, |
| 654 | }; |
| 655 | |
| 656 | /** |
| 657 | * set_ind_bit_atomic - Atomically set a bit in an indicator |
| 658 | * |
| 659 | * @ind_loc: Address of the indicator |
| 660 | * @to_be_set: Bit to set |
| 661 | * |
| 662 | * Returns true if the bit was set by this function, false if it was |
| 663 | * already set or mapping failed. |
| 664 | */ |
| 665 | static bool set_ind_bit_atomic(uint64_t ind_loc, uint8_t to_be_set) |
| 666 | { |
| 667 | uint8_t expected, actual; |
| 668 | hwaddr len = 1; |
| 669 | /* avoid multiple fetches */ |
| 670 | uint8_t volatile *ind_addr; |
| 671 | |
| 672 | ind_addr = physical_memory_map(ind_loc, &len, true); |
| 673 | if (!ind_addr) { |
| 674 | s390_pci_generate_error_event(ERR_EVENT_AIRERR, 0, 0, 0, 0); |
| 675 | return false; |
| 676 | } |
| 677 | actual = *ind_addr; |
| 678 | do { |
| 679 | expected = actual; |
| 680 | actual = qatomic_cmpxchg(ind_addr, expected, expected | to_be_set); |
| 681 | } while (actual != expected); |
| 682 | physical_memory_unmap((void *)ind_addr, len, 1, len); |
| 683 | |
| 684 | return (actual & to_be_set) ? false : true; |
| 685 | } |
| 686 | |
| 687 | static void s390_msi_ctrl_write(void *opaque, hwaddr addr, uint64_t data, |
| 688 | unsigned int size) |
| 689 | { |
| 690 | S390PCIBusDevice *pbdev = opaque; |
| 691 | uint32_t vec = data & ZPCI_MSI_VEC_MASK; |
| 692 | uint64_t ind_bit; |
| 693 | uint32_t sum_bit; |
| 694 | |
| 695 | assert(pbdev); |
| 696 | |
| 697 | trace_s390_pci_msi_ctrl_write(data, pbdev->idx, vec); |
| 698 | |
| 699 | if (pbdev->state != ZPCI_FS_ENABLED) { |
| 700 | return; |
| 701 | } |
| 702 | |
| 703 | ind_bit = pbdev->routes.adapter.ind_offset; |
| 704 | sum_bit = pbdev->routes.adapter.summary_offset; |
| 705 | |
| 706 | set_ind_bit_atomic(pbdev->routes.adapter.ind_addr + (ind_bit + vec) / 8, |
| 707 | 0x80 >> ((ind_bit + vec) % 8)); |
| 708 | if (set_ind_bit_atomic(pbdev->routes.adapter.summary_addr + sum_bit / 8, |
| 709 | 0x80 >> (sum_bit % 8))) { |
| 710 | css_adapter_interrupt(CSS_IO_ADAPTER_PCI, pbdev->isc); |
| 711 | } |
| 712 | } |
| 713 | |
| 714 | static uint64_t s390_msi_ctrl_read(void *opaque, hwaddr addr, unsigned size) |
| 715 | { |
| 716 | return 0xffffffff; |
| 717 | } |
| 718 | |
| 719 | static const MemoryRegionOps s390_msi_ctrl_ops = { |
| 720 | .write = s390_msi_ctrl_write, |
| 721 | .read = s390_msi_ctrl_read, |
| 722 | .endianness = DEVICE_LITTLE_ENDIAN, |
| 723 | }; |
| 724 | |
| 725 | void s390_pci_iommu_enable(S390PCIIOMMU *iommu) |
| 726 | { |
| 727 | /* |
| 728 | * The iommu region is initialized against a 0-mapped address space, |
| 729 | * so the smallest IOMMU region we can define runs from 0 to the end |
| 730 | * of the PCI address space. |
| 731 | */ |
| 732 | char *name = g_strdup_printf("iommu-s390-%04x", iommu->pbdev->uid); |
| 733 | memory_region_init_iommu(&iommu->iommu_mr, sizeof(iommu->iommu_mr), |
| 734 | TYPE_S390_IOMMU_MEMORY_REGION, OBJECT(&iommu->mr), |
| 735 | name, iommu->pal + 1); |
| 736 | iommu->enabled = true; |
| 737 | memory_region_add_subregion(&iommu->mr, 0, MEMORY_REGION(&iommu->iommu_mr)); |
| 738 | g_free(name); |
| 739 | } |
| 740 | |
| 741 | void s390_pci_iommu_direct_map_enable(S390PCIIOMMU *iommu) |
| 742 | { |
| 743 | MachineState *ms = MACHINE(qdev_get_machine()); |
| 744 | S390CcwMachineState *s390ms = S390_CCW_MACHINE(ms); |
| 745 | |
| 746 | /* |
| 747 | * For direct-mapping we must map the entire guest address space. Rather |
| 748 | * than using an iommu, create a memory region alias that maps GPA X to |
| 749 | * IOVA X + SDMA. VFIO will handle pinning via its memory listener. |
| 750 | */ |
| 751 | g_autofree char *name = g_strdup_printf("iommu-dm-s390-%04x", |
| 752 | iommu->pbdev->uid); |
| 753 | |
| 754 | iommu->dm_mr = g_malloc0(sizeof(*iommu->dm_mr)); |
| 755 | memory_region_init_alias(iommu->dm_mr, OBJECT(&iommu->mr), name, |
| 756 | get_system_memory(), 0, |
| 757 | s390_get_memory_limit(s390ms)); |
| 758 | iommu->enabled = true; |
| 759 | memory_region_add_subregion(&iommu->mr, iommu->pbdev->zpci_fn.sdma, |
| 760 | iommu->dm_mr); |
| 761 | } |
| 762 | |
| 763 | void s390_pci_iommu_disable(S390PCIIOMMU *iommu) |
| 764 | { |
| 765 | iommu->enabled = false; |
| 766 | g_hash_table_remove_all(iommu->iotlb); |
| 767 | if (iommu->dm_mr) { |
| 768 | memory_region_del_subregion(&iommu->mr, iommu->dm_mr); |
| 769 | object_unparent(OBJECT(iommu->dm_mr)); |
| 770 | g_free(iommu->dm_mr); |
| 771 | iommu->dm_mr = NULL; |
| 772 | } else { |
| 773 | memory_region_del_subregion(&iommu->mr, |
| 774 | MEMORY_REGION(&iommu->iommu_mr)); |
| 775 | object_unparent(OBJECT(&iommu->iommu_mr)); |
| 776 | } |
| 777 | } |
| 778 | |
| 779 | static void s390_pci_iommu_free(S390pciState *s, PCIBus *bus, int32_t devfn) |
| 780 | { |
| 781 | uint64_t key = (uintptr_t)bus; |
| 782 | S390PCIIOMMUTable *table = g_hash_table_lookup(s->iommu_table, &key); |
| 783 | S390PCIIOMMU *iommu = table ? table->iommu[PCI_SLOT(devfn)] : NULL; |
| 784 | |
| 785 | if (!table || !iommu) { |
| 786 | return; |
| 787 | } |
| 788 | |
| 789 | table->iommu[PCI_SLOT(devfn)] = NULL; |
| 790 | g_hash_table_destroy(iommu->iotlb); |
| 791 | /* |
| 792 | * An attached PCI device may have memory listeners, eg. VFIO PCI. |
| 793 | * The associated subregion will already have been unmapped in |
| 794 | * s390_pci_iommu_disable in response to the guest deconfigure request. |
| 795 | * Remove the listeners now before destroying the address space. |
| 796 | */ |
| 797 | address_space_remove_listeners(&iommu->as); |
| 798 | address_space_destroy(&iommu->as); |
| 799 | object_unparent(OBJECT(&iommu->mr)); |
| 800 | object_unparent(OBJECT(iommu)); |
| 801 | object_unref(OBJECT(iommu)); |
| 802 | } |
| 803 | |
| 804 | S390PCIGroup *s390_group_create(int id, int host_id) |
| 805 | { |
| 806 | S390PCIGroup *group; |
| 807 | S390pciState *s = s390_get_phb(); |
| 808 | |
| 809 | group = g_new0(S390PCIGroup, 1); |
| 810 | group->id = id; |
| 811 | group->host_id = host_id; |
| 812 | QTAILQ_INSERT_TAIL(&s->zpci_groups, group, link); |
| 813 | return group; |
| 814 | } |
| 815 | |
| 816 | S390PCIGroup *s390_group_find(int id) |
| 817 | { |
| 818 | S390PCIGroup *group; |
| 819 | S390pciState *s = s390_get_phb(); |
| 820 | |
| 821 | QTAILQ_FOREACH(group, &s->zpci_groups, link) { |
| 822 | if (group->id == id) { |
| 823 | return group; |
| 824 | } |
| 825 | } |
| 826 | return NULL; |
| 827 | } |
| 828 | |
| 829 | S390PCIGroup *s390_group_find_host_sim(int host_id) |
| 830 | { |
| 831 | S390PCIGroup *group; |
| 832 | S390pciState *s = s390_get_phb(); |
| 833 | |
| 834 | QTAILQ_FOREACH(group, &s->zpci_groups, link) { |
| 835 | if (group->id >= ZPCI_SIM_GRP_START && group->host_id == host_id) { |
| 836 | return group; |
| 837 | } |
| 838 | } |
| 839 | return NULL; |
| 840 | } |
| 841 | |
| 842 | static void s390_pci_init_default_group(void) |
| 843 | { |
| 844 | S390PCIGroup *group; |
| 845 | ClpRspQueryPciGrp *resgrp; |
| 846 | |
| 847 | group = s390_group_create(ZPCI_DEFAULT_FN_GRP, ZPCI_DEFAULT_FN_GRP); |
| 848 | resgrp = &group->zpci_group; |
| 849 | resgrp->fr = 1; |
| 850 | resgrp->dasm = 0; |
| 851 | resgrp->msia = ZPCI_MSI_ADDR; |
| 852 | resgrp->mui = DEFAULT_MUI; |
| 853 | resgrp->i = 128; |
| 854 | resgrp->maxstbl = 128; |
| 855 | resgrp->version = 0; |
| 856 | resgrp->dtsm = ZPCI_DTSM; |
| 857 | } |
| 858 | |
| 859 | static void set_pbdev_info(S390PCIBusDevice *pbdev) |
| 860 | { |
| 861 | pbdev->zpci_fn.sdma = ZPCI_SDMA_ADDR; |
| 862 | pbdev->zpci_fn.edma = ZPCI_EDMA_ADDR; |
| 863 | pbdev->zpci_fn.pchid = 0; |
| 864 | pbdev->zpci_fn.pfgid = ZPCI_DEFAULT_FN_GRP; |
| 865 | pbdev->zpci_fn.fid = pbdev->fid; |
| 866 | pbdev->zpci_fn.uid = pbdev->uid; |
| 867 | pbdev->pci_group = s390_group_find(ZPCI_DEFAULT_FN_GRP); |
| 868 | } |
| 869 | |
| 870 | static void s390_pcihost_realize(DeviceState *dev, Error **errp) |
| 871 | { |
| 872 | PCIBus *b; |
| 873 | BusState *bus; |
| 874 | PCIHostState *phb = PCI_HOST_BRIDGE(dev); |
| 875 | S390pciState *s = S390_PCI_HOST_BRIDGE(dev); |
| 876 | |
| 877 | trace_s390_pcihost("realize"); |
| 878 | |
| 879 | b = pci_register_root_bus(dev, NULL, s390_pci_set_irq, s390_pci_map_irq, |
| 880 | NULL, get_system_memory(), get_system_io(), 0, |
| 881 | 64, TYPE_PCI_BUS); |
| 882 | pci_setup_iommu(b, &s390_iommu_ops, s); |
| 883 | |
| 884 | bus = BUS(b); |
| 885 | qbus_set_hotplug_handler(bus, OBJECT(dev)); |
| 886 | phb->bus = b; |
| 887 | |
| 888 | s->bus = S390_PCI_BUS(qbus_new(TYPE_S390_PCI_BUS, dev, NULL)); |
| 889 | qbus_set_hotplug_handler(BUS(s->bus), OBJECT(dev)); |
| 890 | |
| 891 | s->iommu_table = g_hash_table_new_full(g_int64_hash, g_int64_equal, |
| 892 | NULL, g_free); |
| 893 | s->zpci_table = g_hash_table_new_full(g_int_hash, g_int_equal, NULL, NULL); |
| 894 | s->bus_no = 0; |
| 895 | s->next_sim_grp = ZPCI_SIM_GRP_START; |
| 896 | QTAILQ_INIT(&s->pending_sei); |
| 897 | QTAILQ_INIT(&s->zpci_devs); |
| 898 | QTAILQ_INIT(&s->zpci_dma_limit); |
| 899 | QTAILQ_INIT(&s->zpci_groups); |
| 900 | |
| 901 | s390_pci_init_default_group(); |
| 902 | css_register_io_adapters(CSS_IO_ADAPTER_PCI, true, false, |
| 903 | S390_ADAPTER_SUPPRESSIBLE, errp); |
| 904 | s390_pcihost_kvm_realize(); |
| 905 | } |
| 906 | |
| 907 | static void s390_pcihost_unrealize(DeviceState *dev) |
| 908 | { |
| 909 | S390PCIGroup *group; |
| 910 | S390pciState *s = S390_PCI_HOST_BRIDGE(dev); |
| 911 | |
| 912 | while (!QTAILQ_EMPTY(&s->zpci_groups)) { |
| 913 | group = QTAILQ_FIRST(&s->zpci_groups); |
| 914 | QTAILQ_REMOVE(&s->zpci_groups, group, link); |
| 915 | } |
| 916 | } |
| 917 | |
| 918 | static int s390_pci_msix_init(S390PCIBusDevice *pbdev) |
| 919 | { |
| 920 | char *name; |
| 921 | uint8_t pos; |
| 922 | uint16_t ctrl; |
| 923 | uint32_t table, pba; |
| 924 | |
| 925 | pos = pci_find_capability(pbdev->pdev, PCI_CAP_ID_MSIX); |
| 926 | if (!pos) { |
| 927 | return -1; |
| 928 | } |
| 929 | |
| 930 | ctrl = pci_host_config_read_common(pbdev->pdev, pos + PCI_MSIX_FLAGS, |
| 931 | pci_config_size(pbdev->pdev), sizeof(ctrl)); |
| 932 | table = pci_host_config_read_common(pbdev->pdev, pos + PCI_MSIX_TABLE, |
| 933 | pci_config_size(pbdev->pdev), sizeof(table)); |
| 934 | pba = pci_host_config_read_common(pbdev->pdev, pos + PCI_MSIX_PBA, |
| 935 | pci_config_size(pbdev->pdev), sizeof(pba)); |
| 936 | |
| 937 | pbdev->msix.table_bar = table & PCI_MSIX_FLAGS_BIRMASK; |
| 938 | pbdev->msix.table_offset = table & ~PCI_MSIX_FLAGS_BIRMASK; |
| 939 | pbdev->msix.pba_bar = pba & PCI_MSIX_FLAGS_BIRMASK; |
| 940 | pbdev->msix.pba_offset = pba & ~PCI_MSIX_FLAGS_BIRMASK; |
| 941 | pbdev->msix.entries = (ctrl & PCI_MSIX_FLAGS_QSIZE) + 1; |
| 942 | |
| 943 | name = g_strdup_printf("msix-s390-%04x", pbdev->uid); |
| 944 | memory_region_init_io(&pbdev->msix_notify_mr, OBJECT(pbdev), |
| 945 | &s390_msi_ctrl_ops, pbdev, name, TARGET_PAGE_SIZE); |
| 946 | memory_region_add_subregion(&pbdev->iommu->mr, |
| 947 | pbdev->pci_group->zpci_group.msia, |
| 948 | &pbdev->msix_notify_mr); |
| 949 | g_free(name); |
| 950 | |
| 951 | return 0; |
| 952 | } |
| 953 | |
| 954 | static void s390_pci_msix_free(S390PCIBusDevice *pbdev) |
| 955 | { |
| 956 | if (pbdev->msix.entries == 0) { |
| 957 | return; |
| 958 | } |
| 959 | |
| 960 | memory_region_del_subregion(&pbdev->iommu->mr, &pbdev->msix_notify_mr); |
| 961 | object_unparent(OBJECT(&pbdev->msix_notify_mr)); |
| 962 | } |
| 963 | |
| 964 | static S390PCIBusDevice *s390_pci_device_new(S390pciState *s, |
| 965 | const char *target, Error **errp) |
| 966 | { |
| 967 | Error *local_err = NULL; |
| 968 | DeviceState *dev; |
| 969 | |
| 970 | dev = qdev_try_new(TYPE_S390_PCI_DEVICE); |
| 971 | if (!dev) { |
| 972 | error_setg(errp, "zPCI device could not be created"); |
| 973 | return NULL; |
| 974 | } |
| 975 | |
| 976 | if (!object_property_set_str(OBJECT(dev), "target", target, &local_err)) { |
| 977 | object_unparent(OBJECT(dev)); |
| 978 | error_propagate_prepend(errp, local_err, |
| 979 | "zPCI device could not be created: "); |
| 980 | return NULL; |
| 981 | } |
| 982 | if (!qdev_realize_and_unref(dev, BUS(s->bus), &local_err)) { |
| 983 | object_unparent(OBJECT(dev)); |
| 984 | error_propagate_prepend(errp, local_err, |
| 985 | "zPCI device could not be created: "); |
| 986 | return NULL; |
| 987 | } |
| 988 | |
| 989 | return S390_PCI_DEVICE(dev); |
| 990 | } |
| 991 | |
| 992 | static bool s390_pci_alloc_idx(S390pciState *s, S390PCIBusDevice *pbdev) |
| 993 | { |
| 994 | uint32_t idx; |
| 995 | |
| 996 | idx = s->next_idx; |
| 997 | while (s390_pci_find_dev_by_idx(s, idx)) { |
| 998 | idx = (idx + 1) & FH_MASK_INDEX; |
| 999 | if (idx == s->next_idx) { |
| 1000 | return false; |
| 1001 | } |
| 1002 | } |
| 1003 | |
| 1004 | pbdev->idx = idx; |
| 1005 | return true; |
| 1006 | } |
| 1007 | |
| 1008 | static void s390_pcihost_pre_plug(HotplugHandler *hotplug_dev, DeviceState *dev, |
| 1009 | Error **errp) |
| 1010 | { |
| 1011 | S390pciState *s = S390_PCI_HOST_BRIDGE(hotplug_dev); |
| 1012 | |
| 1013 | if (!s390_has_feat(S390_FEAT_ZPCI)) { |
| 1014 | warn_report("Plugging a PCI/zPCI device without the 'zpci' CPU " |
| 1015 | "feature enabled; the guest will not be able to see/use " |
| 1016 | "this device"); |
| 1017 | } |
| 1018 | |
| 1019 | if (object_dynamic_cast(OBJECT(dev), TYPE_S390_PCI_DEVICE)) { |
| 1020 | S390PCIBusDevice *pbdev = S390_PCI_DEVICE(dev); |
| 1021 | |
| 1022 | if (!s390_pci_alloc_idx(s, pbdev)) { |
| 1023 | error_setg(errp, "no slot for plugging zpci device"); |
| 1024 | return; |
| 1025 | } |
| 1026 | } |
| 1027 | } |
| 1028 | |
| 1029 | static void s390_pci_update_subordinate(PCIDevice *dev, uint32_t nr) |
| 1030 | { |
| 1031 | uint32_t old_nr; |
| 1032 | |
| 1033 | pci_default_write_config(dev, PCI_SUBORDINATE_BUS, nr, 1); |
| 1034 | while (!pci_bus_is_root(pci_get_bus(dev))) { |
| 1035 | dev = pci_get_bus(dev)->parent_dev; |
| 1036 | |
| 1037 | old_nr = pci_default_read_config(dev, PCI_SUBORDINATE_BUS, 1); |
| 1038 | if (old_nr < nr) { |
| 1039 | pci_default_write_config(dev, PCI_SUBORDINATE_BUS, nr, 1); |
| 1040 | } |
| 1041 | } |
| 1042 | } |
| 1043 | |
| 1044 | static int s390_pci_interp_plug(S390pciState *s, S390PCIBusDevice *pbdev) |
| 1045 | { |
| 1046 | uint32_t idx, fh; |
| 1047 | |
| 1048 | if (!s390_pci_get_host_fh(pbdev, &fh)) { |
| 1049 | return -EPERM; |
| 1050 | } |
| 1051 | |
| 1052 | /* |
| 1053 | * The host device is already in an enabled state, but we always present |
| 1054 | * the initial device state to the guest as disabled (ZPCI_FS_DISABLED). |
| 1055 | * Therefore, mask off the enable bit from the passthrough handle until |
| 1056 | * the guest issues a CLP SET PCI FN later to enable the device. |
| 1057 | */ |
| 1058 | pbdev->fh = fh & ~FH_MASK_ENABLE; |
| 1059 | |
| 1060 | /* Next, see if the idx is already in-use */ |
| 1061 | idx = pbdev->fh & FH_MASK_INDEX; |
| 1062 | if (pbdev->idx != idx) { |
| 1063 | if (s390_pci_find_dev_by_idx(s, idx)) { |
| 1064 | return -EINVAL; |
| 1065 | } |
| 1066 | /* |
| 1067 | * Update the idx entry with the passed through idx |
| 1068 | * If the relinquished idx is lower than next_idx, use it |
| 1069 | * to replace next_idx |
| 1070 | */ |
| 1071 | g_hash_table_remove(s->zpci_table, &pbdev->idx); |
| 1072 | if (idx < s->next_idx) { |
| 1073 | s->next_idx = idx; |
| 1074 | } |
| 1075 | pbdev->idx = idx; |
| 1076 | g_hash_table_insert(s->zpci_table, &pbdev->idx, pbdev); |
| 1077 | } |
| 1078 | |
| 1079 | return 0; |
| 1080 | } |
| 1081 | |
| 1082 | static void s390_pcihost_plug(HotplugHandler *hotplug_dev, DeviceState *dev, |
| 1083 | Error **errp) |
| 1084 | { |
| 1085 | S390pciState *s = S390_PCI_HOST_BRIDGE(hotplug_dev); |
| 1086 | PCIDevice *pdev = NULL; |
| 1087 | S390PCIBusDevice *pbdev = NULL; |
| 1088 | int rc; |
| 1089 | |
| 1090 | if (object_dynamic_cast(OBJECT(dev), TYPE_PCI_BRIDGE)) { |
| 1091 | PCIBridge *pb = PCI_BRIDGE(dev); |
| 1092 | |
| 1093 | pdev = PCI_DEVICE(dev); |
| 1094 | pci_bridge_map_irq(pb, dev->id, s390_pci_map_irq); |
| 1095 | pci_setup_iommu(&pb->sec_bus, &s390_iommu_ops, s); |
| 1096 | |
| 1097 | qbus_set_hotplug_handler(BUS(&pb->sec_bus), OBJECT(s)); |
| 1098 | |
| 1099 | if (dev->hotplugged) { |
| 1100 | pci_default_write_config(pdev, PCI_PRIMARY_BUS, |
| 1101 | pci_dev_bus_num(pdev), 1); |
| 1102 | s->bus_no += 1; |
| 1103 | pci_default_write_config(pdev, PCI_SECONDARY_BUS, s->bus_no, 1); |
| 1104 | |
| 1105 | s390_pci_update_subordinate(pdev, s->bus_no); |
| 1106 | } |
| 1107 | } else if (object_dynamic_cast(OBJECT(dev), TYPE_PCI_DEVICE)) { |
| 1108 | pdev = PCI_DEVICE(dev); |
| 1109 | |
| 1110 | /* |
| 1111 | * Multifunction is not supported due to the lack of CLP. However, |
| 1112 | * do not check for multifunction capability for SR-IOV devices because |
| 1113 | * SR-IOV devices automatically add the multifunction capability whether |
| 1114 | * the user intends to use the functions other than the PF. |
| 1115 | */ |
| 1116 | if (pdev->cap_present & QEMU_PCI_CAP_MULTIFUNCTION && |
| 1117 | !pdev->exp.sriov_cap) { |
| 1118 | error_setg(errp, "multifunction not supported in s390"); |
| 1119 | return; |
| 1120 | } |
| 1121 | |
| 1122 | if (!dev->id) { |
| 1123 | /* In the case the PCI device does not define an id */ |
| 1124 | /* we generate one based on the PCI address */ |
| 1125 | dev->id = g_strdup_printf("auto_%02x:%02x.%01x", |
| 1126 | pci_dev_bus_num(pdev), |
| 1127 | PCI_SLOT(pdev->devfn), |
| 1128 | PCI_FUNC(pdev->devfn)); |
| 1129 | } |
| 1130 | |
| 1131 | pbdev = s390_pci_find_dev_by_target(s, dev->id); |
| 1132 | if (!pbdev) { |
| 1133 | /* |
| 1134 | * VFs are automatically created by PF, and creating zpci for them |
| 1135 | * will result in unexpected usage of fids. Currently QEMU does not |
| 1136 | * support multifunction for s390x so we don't need zpci for VFs |
| 1137 | * anyway. |
| 1138 | */ |
| 1139 | if (pci_is_vf(pdev)) { |
| 1140 | return; |
| 1141 | } |
| 1142 | |
| 1143 | pbdev = s390_pci_device_new(s, dev->id, errp); |
| 1144 | if (!pbdev) { |
| 1145 | return; |
| 1146 | } |
| 1147 | } |
| 1148 | |
| 1149 | pbdev->pdev = pdev; |
| 1150 | pbdev->iommu = s390_pci_get_iommu(s, pci_get_bus(pdev), pdev->devfn); |
| 1151 | pbdev->iommu->pbdev = pbdev; |
| 1152 | pbdev->state = ZPCI_FS_DISABLED; |
| 1153 | set_pbdev_info(pbdev); |
| 1154 | |
| 1155 | if (object_dynamic_cast(OBJECT(dev), "vfio-pci")) { |
| 1156 | /* |
| 1157 | * By default, interpretation is always requested; if the available |
| 1158 | * facilities indicate it is not available, fallback to the |
| 1159 | * interception model. |
| 1160 | */ |
| 1161 | if (pbdev->interp) { |
| 1162 | if (s390_pci_kvm_interp_allowed()) { |
| 1163 | rc = s390_pci_interp_plug(s, pbdev); |
| 1164 | if (rc) { |
| 1165 | error_setg(errp, "Plug failed for zPCI device in " |
| 1166 | "interpretation mode: %d", rc); |
| 1167 | return; |
| 1168 | } |
| 1169 | } else { |
| 1170 | trace_s390_pcihost("zPCI interpretation missing"); |
| 1171 | pbdev->interp = false; |
| 1172 | pbdev->forwarding_assist = false; |
| 1173 | } |
| 1174 | } |
| 1175 | pbdev->iommu->dma_limit = s390_pci_start_dma_count(s, pbdev); |
| 1176 | /* Fill in CLP information passed via the vfio region */ |
| 1177 | s390_pci_get_clp_info(pbdev); |
| 1178 | if (!pbdev->interp) { |
| 1179 | /* Do vfio passthrough but intercept for I/O */ |
| 1180 | pbdev->fh |= FH_SHM_VFIO; |
| 1181 | pbdev->forwarding_assist = false; |
| 1182 | } |
| 1183 | /* Register shutdown notifier and reset callback for ISM devices */ |
| 1184 | if (pbdev->pft == ZPCI_PFT_ISM) { |
| 1185 | pbdev->shutdown_notifier.notify = s390_pci_shutdown_notifier; |
| 1186 | qemu_register_shutdown_notifier(&pbdev->shutdown_notifier); |
| 1187 | } |
| 1188 | } else { |
| 1189 | pbdev->fh |= FH_SHM_EMUL; |
| 1190 | /* Always intercept emulated devices */ |
| 1191 | pbdev->interp = false; |
| 1192 | pbdev->forwarding_assist = false; |
| 1193 | pbdev->rtr_avail = false; |
| 1194 | } |
| 1195 | |
| 1196 | if (s390_pci_msix_init(pbdev) && !pbdev->interp) { |
| 1197 | error_setg(errp, "MSI-X support is mandatory " |
| 1198 | "in the S390 architecture"); |
| 1199 | return; |
| 1200 | } |
| 1201 | |
| 1202 | if (dev->hotplugged) { |
| 1203 | s390_pci_generate_plug_event(HP_EVENT_TO_CONFIGURED , |
| 1204 | pbdev->fh, pbdev->fid); |
| 1205 | } |
| 1206 | } else if (object_dynamic_cast(OBJECT(dev), TYPE_S390_PCI_DEVICE)) { |
| 1207 | pbdev = S390_PCI_DEVICE(dev); |
| 1208 | |
| 1209 | /* the allocated idx is actually getting used */ |
| 1210 | s->next_idx = (pbdev->idx + 1) & FH_MASK_INDEX; |
| 1211 | pbdev->fh = pbdev->idx; |
| 1212 | QTAILQ_INSERT_TAIL(&s->zpci_devs, pbdev, link); |
| 1213 | g_hash_table_insert(s->zpci_table, &pbdev->idx, pbdev); |
| 1214 | } else { |
| 1215 | g_assert_not_reached(); |
| 1216 | } |
| 1217 | } |
| 1218 | |
| 1219 | static void s390_pcihost_unplug(HotplugHandler *hotplug_dev, DeviceState *dev, |
| 1220 | Error **errp) |
| 1221 | { |
| 1222 | S390pciState *s = S390_PCI_HOST_BRIDGE(hotplug_dev); |
| 1223 | S390PCIBusDevice *pbdev = NULL; |
| 1224 | |
| 1225 | if (object_dynamic_cast(OBJECT(dev), TYPE_PCI_DEVICE)) { |
| 1226 | PCIDevice *pci_dev = PCI_DEVICE(dev); |
| 1227 | PCIBus *bus; |
| 1228 | int32_t devfn; |
| 1229 | |
| 1230 | pbdev = s390_pci_find_dev_by_pci(s, PCI_DEVICE(dev)); |
| 1231 | if (!pbdev) { |
| 1232 | g_assert(pci_is_vf(pci_dev)); |
| 1233 | return; |
| 1234 | } |
| 1235 | |
| 1236 | s390_pci_generate_plug_event(HP_EVENT_STANDBY_TO_RESERVED, |
| 1237 | pbdev->fh, pbdev->fid); |
| 1238 | bus = pci_get_bus(pci_dev); |
| 1239 | devfn = pci_dev->devfn; |
| 1240 | qdev_unrealize(dev); |
| 1241 | |
| 1242 | s390_pci_msix_free(pbdev); |
| 1243 | s390_pci_iommu_free(s, bus, devfn); |
| 1244 | pbdev->pdev = NULL; |
| 1245 | pbdev->state = ZPCI_FS_RESERVED; |
| 1246 | } else if (object_dynamic_cast(OBJECT(dev), TYPE_S390_PCI_DEVICE)) { |
| 1247 | pbdev = S390_PCI_DEVICE(dev); |
| 1248 | pbdev->fid = 0; |
| 1249 | QTAILQ_REMOVE(&s->zpci_devs, pbdev, link); |
| 1250 | g_hash_table_remove(s->zpci_table, &pbdev->idx); |
| 1251 | if (pbdev->iommu && pbdev->iommu->dma_limit) { |
| 1252 | s390_pci_end_dma_count(s, pbdev->iommu->dma_limit); |
| 1253 | } |
| 1254 | qdev_unrealize(dev); |
| 1255 | } |
| 1256 | } |
| 1257 | |
| 1258 | static void s390_pcihost_unplug_request(HotplugHandler *hotplug_dev, |
| 1259 | DeviceState *dev, |
| 1260 | Error **errp) |
| 1261 | { |
| 1262 | S390pciState *s = S390_PCI_HOST_BRIDGE(hotplug_dev); |
| 1263 | S390PCIBusDevice *pbdev; |
| 1264 | |
| 1265 | if (object_dynamic_cast(OBJECT(dev), TYPE_PCI_BRIDGE)) { |
| 1266 | error_setg(errp, "PCI bridge hot unplug currently not supported"); |
| 1267 | } else if (object_dynamic_cast(OBJECT(dev), TYPE_PCI_DEVICE)) { |
| 1268 | /* |
| 1269 | * Redirect the unplug request to the zPCI device and remember that |
| 1270 | * we've checked the PCI device already (to prevent endless recursion). |
| 1271 | */ |
| 1272 | pbdev = s390_pci_find_dev_by_pci(s, PCI_DEVICE(dev)); |
| 1273 | if (!pbdev) { |
| 1274 | g_assert(pci_is_vf(PCI_DEVICE(dev))); |
| 1275 | return; |
| 1276 | } |
| 1277 | |
| 1278 | pbdev->pci_unplug_request_processed = true; |
| 1279 | qdev_unplug(DEVICE(pbdev), errp); |
| 1280 | } else if (object_dynamic_cast(OBJECT(dev), TYPE_S390_PCI_DEVICE)) { |
| 1281 | pbdev = S390_PCI_DEVICE(dev); |
| 1282 | |
| 1283 | /* |
| 1284 | * If unplug was initially requested for the zPCI device, we |
| 1285 | * first have to redirect to the PCI device, which will in return |
| 1286 | * redirect back to us after performing its checks (if the request |
| 1287 | * is not blocked, e.g. because it's a PCI bridge). |
| 1288 | */ |
| 1289 | if (pbdev->pdev && !pbdev->pci_unplug_request_processed) { |
| 1290 | qdev_unplug(DEVICE(pbdev->pdev), errp); |
| 1291 | return; |
| 1292 | } |
| 1293 | pbdev->pci_unplug_request_processed = false; |
| 1294 | |
| 1295 | switch (pbdev->state) { |
| 1296 | case ZPCI_FS_STANDBY: |
| 1297 | case ZPCI_FS_RESERVED: |
| 1298 | s390_pci_perform_unplug(pbdev); |
| 1299 | break; |
| 1300 | default: |
| 1301 | /* |
| 1302 | * Allow to send multiple requests, e.g. if the guest crashed |
| 1303 | * before releasing the device, we would not be able to send |
| 1304 | * another request to the same VM (e.g. fresh OS). |
| 1305 | */ |
| 1306 | pbdev->unplug_requested = true; |
| 1307 | s390_pci_generate_plug_event(HP_EVENT_DECONFIGURE_REQUEST, |
| 1308 | pbdev->fh, pbdev->fid); |
| 1309 | } |
| 1310 | } else { |
| 1311 | g_assert_not_reached(); |
| 1312 | } |
| 1313 | } |
| 1314 | |
| 1315 | static void s390_pci_enumerate_bridge(PCIBus *bus, PCIDevice *pdev, |
| 1316 | void *opaque) |
| 1317 | { |
| 1318 | S390pciState *s = opaque; |
| 1319 | PCIBus *sec_bus = NULL; |
| 1320 | |
| 1321 | if ((pci_default_read_config(pdev, PCI_HEADER_TYPE, 1) != |
| 1322 | PCI_HEADER_TYPE_BRIDGE)) { |
| 1323 | return; |
| 1324 | } |
| 1325 | |
| 1326 | (s->bus_no)++; |
| 1327 | pci_default_write_config(pdev, PCI_PRIMARY_BUS, pci_dev_bus_num(pdev), 1); |
| 1328 | pci_default_write_config(pdev, PCI_SECONDARY_BUS, s->bus_no, 1); |
| 1329 | pci_default_write_config(pdev, PCI_SUBORDINATE_BUS, s->bus_no, 1); |
| 1330 | |
| 1331 | sec_bus = pci_bridge_get_sec_bus(PCI_BRIDGE(pdev)); |
| 1332 | if (!sec_bus) { |
| 1333 | return; |
| 1334 | } |
| 1335 | |
| 1336 | /* Assign numbers to all child bridges. The last is the highest number. */ |
| 1337 | pci_for_each_device_under_bus(sec_bus, s390_pci_enumerate_bridge, s); |
| 1338 | pci_default_write_config(pdev, PCI_SUBORDINATE_BUS, s->bus_no, 1); |
| 1339 | } |
| 1340 | |
| 1341 | void s390_pci_ism_reset(void) |
| 1342 | { |
| 1343 | S390pciState *s = s390_get_phb(); |
| 1344 | |
| 1345 | S390PCIBusDevice *pbdev, *next; |
| 1346 | |
| 1347 | /* Trigger reset event for each passthrough ISM device currently in-use */ |
| 1348 | QTAILQ_FOREACH_SAFE(pbdev, &s->zpci_devs, link, next) { |
| 1349 | if (pbdev->interp && pbdev->pft == ZPCI_PFT_ISM && |
| 1350 | pbdev->fh & FH_MASK_ENABLE) { |
| 1351 | s390_pci_kvm_aif_disable(pbdev); |
| 1352 | |
| 1353 | pci_device_reset(pbdev->pdev); |
| 1354 | } |
| 1355 | } |
| 1356 | } |
| 1357 | |
| 1358 | static void s390_pcihost_reset(DeviceState *dev) |
| 1359 | { |
| 1360 | S390pciState *s = S390_PCI_HOST_BRIDGE(dev); |
| 1361 | PCIBus *bus = s->parent_obj.bus; |
| 1362 | S390PCIBusDevice *pbdev, *next; |
| 1363 | |
| 1364 | /* Process all pending unplug requests */ |
| 1365 | QTAILQ_FOREACH_SAFE(pbdev, &s->zpci_devs, link, next) { |
| 1366 | if (pbdev->unplug_requested) { |
| 1367 | if (pbdev->interp && (pbdev->fh & FH_MASK_ENABLE)) { |
| 1368 | /* Interpreted devices were using interrupt forwarding */ |
| 1369 | s390_pci_kvm_aif_disable(pbdev); |
| 1370 | } else if (pbdev->summary_ind) { |
| 1371 | pci_dereg_irqs(pbdev); |
| 1372 | } |
| 1373 | if (pbdev->iommu->enabled) { |
| 1374 | pci_dereg_ioat(pbdev->iommu); |
| 1375 | } |
| 1376 | pbdev->state = ZPCI_FS_STANDBY; |
| 1377 | s390_pci_perform_unplug(pbdev); |
| 1378 | } |
| 1379 | } |
| 1380 | |
| 1381 | /* |
| 1382 | * When resetting a PCI bridge, the assigned numbers are set to 0. So |
| 1383 | * on every system reset, we also have to reassign numbers. |
| 1384 | */ |
| 1385 | s->bus_no = 0; |
| 1386 | pci_for_each_device_under_bus(bus, s390_pci_enumerate_bridge, s); |
| 1387 | } |
| 1388 | |
| 1389 | static void s390_pcihost_class_init(ObjectClass *klass, const void *data) |
| 1390 | { |
| 1391 | DeviceClass *dc = DEVICE_CLASS(klass); |
| 1392 | HotplugHandlerClass *hc = HOTPLUG_HANDLER_CLASS(klass); |
| 1393 | |
| 1394 | device_class_set_legacy_reset(dc, s390_pcihost_reset); |
| 1395 | dc->realize = s390_pcihost_realize; |
| 1396 | dc->unrealize = s390_pcihost_unrealize; |
| 1397 | hc->pre_plug = s390_pcihost_pre_plug; |
| 1398 | hc->plug = s390_pcihost_plug; |
| 1399 | hc->unplug_request = s390_pcihost_unplug_request; |
| 1400 | hc->unplug = s390_pcihost_unplug; |
| 1401 | msi_nonbroken = true; |
| 1402 | } |
| 1403 | |
| 1404 | static const TypeInfo s390_pcihost_info = { |
| 1405 | .name = TYPE_S390_PCI_HOST_BRIDGE, |
| 1406 | .parent = TYPE_PCI_HOST_BRIDGE, |
| 1407 | .instance_size = sizeof(S390pciState), |
| 1408 | .class_init = s390_pcihost_class_init, |
| 1409 | .interfaces = (const InterfaceInfo[]) { |
| 1410 | { TYPE_HOTPLUG_HANDLER }, |
| 1411 | { } |
| 1412 | } |
| 1413 | }; |
| 1414 | |
| 1415 | static const TypeInfo s390_pcibus_info = { |
| 1416 | .name = TYPE_S390_PCI_BUS, |
| 1417 | .parent = TYPE_BUS, |
| 1418 | .instance_size = sizeof(S390PCIBus), |
| 1419 | }; |
| 1420 | |
| 1421 | static uint16_t s390_pci_generate_uid(S390pciState *s) |
| 1422 | { |
| 1423 | uint16_t uid = 0; |
| 1424 | |
| 1425 | do { |
| 1426 | uid++; |
| 1427 | if (!s390_pci_find_dev_by_uid(s, uid)) { |
| 1428 | return uid; |
| 1429 | } |
| 1430 | } while (uid < ZPCI_MAX_UID); |
| 1431 | |
| 1432 | return UID_UNDEFINED; |
| 1433 | } |
| 1434 | |
| 1435 | static uint32_t s390_pci_generate_fid(S390pciState *s, Error **errp) |
| 1436 | { |
| 1437 | uint32_t fid = 0; |
| 1438 | |
| 1439 | do { |
| 1440 | if (!s390_pci_find_dev_by_fid(s, fid)) { |
| 1441 | return fid; |
| 1442 | } |
| 1443 | } while (fid++ != ZPCI_MAX_FID); |
| 1444 | |
| 1445 | error_setg(errp, "no free fid could be found"); |
| 1446 | return 0; |
| 1447 | } |
| 1448 | |
| 1449 | static void s390_pci_device_realize(DeviceState *dev, Error **errp) |
| 1450 | { |
| 1451 | S390PCIBusDevice *zpci = S390_PCI_DEVICE(dev); |
| 1452 | S390pciState *s = s390_get_phb(); |
| 1453 | |
| 1454 | if (!zpci->target) { |
| 1455 | error_setg(errp, "target must be defined"); |
| 1456 | return; |
| 1457 | } |
| 1458 | |
| 1459 | if (s390_pci_find_dev_by_target(s, zpci->target)) { |
| 1460 | error_setg(errp, "target %s already has an associated zpci device", |
| 1461 | zpci->target); |
| 1462 | return; |
| 1463 | } |
| 1464 | |
| 1465 | if (zpci->uid == UID_UNDEFINED) { |
| 1466 | zpci->uid = s390_pci_generate_uid(s); |
| 1467 | if (!zpci->uid) { |
| 1468 | error_setg(errp, "no free uid could be found"); |
| 1469 | return; |
| 1470 | } |
| 1471 | } else if (s390_pci_find_dev_by_uid(s, zpci->uid)) { |
| 1472 | error_setg(errp, "uid %u already in use", zpci->uid); |
| 1473 | return; |
| 1474 | } |
| 1475 | |
| 1476 | if (!zpci->fid_defined) { |
| 1477 | Error *local_error = NULL; |
| 1478 | |
| 1479 | zpci->fid = s390_pci_generate_fid(s, &local_error); |
| 1480 | if (local_error) { |
| 1481 | error_propagate(errp, local_error); |
| 1482 | return; |
| 1483 | } |
| 1484 | } else if (s390_pci_find_dev_by_fid(s, zpci->fid)) { |
| 1485 | error_setg(errp, "fid %u already in use", zpci->fid); |
| 1486 | return; |
| 1487 | } |
| 1488 | |
| 1489 | zpci->state = ZPCI_FS_RESERVED; |
| 1490 | zpci->fmb.format = ZPCI_FMB_FORMAT; |
| 1491 | } |
| 1492 | |
| 1493 | static void s390_pci_device_reset(DeviceState *dev) |
| 1494 | { |
| 1495 | S390PCIBusDevice *pbdev = S390_PCI_DEVICE(dev); |
| 1496 | |
| 1497 | switch (pbdev->state) { |
| 1498 | case ZPCI_FS_RESERVED: |
| 1499 | return; |
| 1500 | case ZPCI_FS_STANDBY: |
| 1501 | break; |
| 1502 | default: |
| 1503 | pbdev->fh &= ~FH_MASK_ENABLE; |
| 1504 | pbdev->state = ZPCI_FS_DISABLED; |
| 1505 | break; |
| 1506 | } |
| 1507 | |
| 1508 | if (pbdev->interp) { |
| 1509 | /* Interpreted devices were using interrupt forwarding */ |
| 1510 | s390_pci_kvm_aif_disable(pbdev); |
| 1511 | } else if (pbdev->summary_ind) { |
| 1512 | pci_dereg_irqs(pbdev); |
| 1513 | } |
| 1514 | if (pbdev->iommu->enabled) { |
| 1515 | pci_dereg_ioat(pbdev->iommu); |
| 1516 | } |
| 1517 | |
| 1518 | fmb_timer_free(pbdev); |
| 1519 | } |
| 1520 | |
| 1521 | static void s390_pci_get_fid(Object *obj, Visitor *v, const char *name, |
| 1522 | void *opaque, Error **errp) |
| 1523 | { |
| 1524 | const Property *prop = opaque; |
| 1525 | uint32_t *ptr = object_field_prop_ptr(obj, prop); |
| 1526 | |
| 1527 | visit_type_uint32(v, name, ptr, errp); |
| 1528 | } |
| 1529 | |
| 1530 | static void s390_pci_set_fid(Object *obj, Visitor *v, const char *name, |
| 1531 | void *opaque, Error **errp) |
| 1532 | { |
| 1533 | S390PCIBusDevice *zpci = S390_PCI_DEVICE(obj); |
| 1534 | const Property *prop = opaque; |
| 1535 | uint32_t *ptr = object_field_prop_ptr(obj, prop); |
| 1536 | |
| 1537 | if (!visit_type_uint32(v, name, ptr, errp)) { |
| 1538 | return; |
| 1539 | } |
| 1540 | zpci->fid_defined = true; |
| 1541 | } |
| 1542 | |
| 1543 | static const PropertyInfo s390_pci_fid_propinfo = { |
| 1544 | .type = "uint32", |
| 1545 | .description = "zpci_fid", |
| 1546 | .get = s390_pci_get_fid, |
| 1547 | .set = s390_pci_set_fid, |
| 1548 | }; |
| 1549 | |
| 1550 | #define DEFINE_PROP_S390_PCI_FID(_n, _s, _f) \ |
| 1551 | DEFINE_PROP(_n, _s, _f, s390_pci_fid_propinfo, uint32_t) |
| 1552 | |
| 1553 | static const Property s390_pci_device_properties[] = { |
| 1554 | DEFINE_PROP_UINT16("uid", S390PCIBusDevice, uid, UID_UNDEFINED), |
| 1555 | DEFINE_PROP_S390_PCI_FID("fid", S390PCIBusDevice, fid), |
| 1556 | DEFINE_PROP_STRING("target", S390PCIBusDevice, target), |
| 1557 | DEFINE_PROP_BOOL("interpret", S390PCIBusDevice, interp, true), |
| 1558 | DEFINE_PROP_BOOL("forwarding-assist", S390PCIBusDevice, forwarding_assist, |
| 1559 | true), |
| 1560 | DEFINE_PROP_BOOL("relaxed-translation", S390PCIBusDevice, rtr_avail, |
| 1561 | true), |
| 1562 | }; |
| 1563 | |
| 1564 | static const VMStateDescription s390_pci_device_vmstate = { |
| 1565 | .name = TYPE_S390_PCI_DEVICE, |
| 1566 | /* |
| 1567 | * TODO: add state handling here, so migration works at least with |
| 1568 | * emulated pci devices on s390x |
| 1569 | */ |
| 1570 | .unmigratable = 1, |
| 1571 | }; |
| 1572 | |
| 1573 | static void s390_pci_device_class_init(ObjectClass *klass, const void *data) |
| 1574 | { |
| 1575 | DeviceClass *dc = DEVICE_CLASS(klass); |
| 1576 | |
| 1577 | dc->desc = "zpci device"; |
| 1578 | set_bit(DEVICE_CATEGORY_MISC, dc->categories); |
| 1579 | device_class_set_legacy_reset(dc, s390_pci_device_reset); |
| 1580 | dc->bus_type = TYPE_S390_PCI_BUS; |
| 1581 | dc->realize = s390_pci_device_realize; |
| 1582 | device_class_set_props(dc, s390_pci_device_properties); |
| 1583 | dc->vmsd = &s390_pci_device_vmstate; |
| 1584 | } |
| 1585 | |
| 1586 | static const TypeInfo s390_pci_device_info = { |
| 1587 | .name = TYPE_S390_PCI_DEVICE, |
| 1588 | .parent = TYPE_DEVICE, |
| 1589 | .instance_size = sizeof(S390PCIBusDevice), |
| 1590 | .class_init = s390_pci_device_class_init, |
| 1591 | }; |
| 1592 | |
| 1593 | static const TypeInfo s390_pci_iommu_info = { |
| 1594 | .name = TYPE_S390_PCI_IOMMU, |
| 1595 | .parent = TYPE_OBJECT, |
| 1596 | .instance_size = sizeof(S390PCIIOMMU), |
| 1597 | }; |
| 1598 | |
| 1599 | static void s390_iommu_memory_region_class_init(ObjectClass *klass, |
| 1600 | const void *data) |
| 1601 | { |
| 1602 | IOMMUMemoryRegionClass *imrc = IOMMU_MEMORY_REGION_CLASS(klass); |
| 1603 | |
| 1604 | imrc->translate = s390_translate_iommu; |
| 1605 | imrc->replay = s390_pci_iommu_replay; |
| 1606 | } |
| 1607 | |
| 1608 | static const TypeInfo s390_iommu_memory_region_info = { |
| 1609 | .parent = TYPE_IOMMU_MEMORY_REGION, |
| 1610 | .name = TYPE_S390_IOMMU_MEMORY_REGION, |
| 1611 | .class_init = s390_iommu_memory_region_class_init, |
| 1612 | }; |
| 1613 | |
| 1614 | static void s390_pci_register_types(void) |
| 1615 | { |
| 1616 | type_register_static(&s390_pcihost_info); |
| 1617 | type_register_static(&s390_pcibus_info); |
| 1618 | type_register_static(&s390_pci_device_info); |
| 1619 | type_register_static(&s390_pci_iommu_info); |
| 1620 | type_register_static(&s390_iommu_memory_region_info); |
| 1621 | } |
| 1622 | |
| 1623 | type_init(s390_pci_register_types) |