| 1 | /* |
| 2 | * iommufd container backend |
| 3 | * |
| 4 | * Copyright (C) 2023 Intel Corporation. |
| 5 | * Copyright Red Hat, Inc. 2023 |
| 6 | * |
| 7 | * Authors: Yi Liu <yi.l.liu@intel.com> |
| 8 | * Eric Auger <eric.auger@redhat.com> |
| 9 | * |
| 10 | * SPDX-License-Identifier: GPL-2.0-or-later |
| 11 | */ |
| 12 | |
| 13 | #include "qemu/osdep.h" |
| 14 | #include <sys/ioctl.h> |
| 15 | #include <linux/vfio.h> |
| 16 | #include <linux/iommufd.h> |
| 17 | |
| 18 | #include "hw/vfio/vfio-device.h" |
| 19 | #include "qemu/error-report.h" |
| 20 | #include "trace.h" |
| 21 | #include "qapi/error.h" |
| 22 | #include "system/iommufd.h" |
| 23 | #include "system/ramblock.h" |
| 24 | #include "hw/core/iommu.h" |
| 25 | #include "hw/core/qdev.h" |
| 26 | #include "hw/vfio/vfio-cpr.h" |
| 27 | #include "system/reset.h" |
| 28 | #include "qemu/cutils.h" |
| 29 | #include "qemu/chardev_open.h" |
| 30 | #include "migration/cpr.h" |
| 31 | #include "pci.h" |
| 32 | #include "vfio-iommufd.h" |
| 33 | #include "vfio-helpers.h" |
| 34 | #include "vfio-listener.h" |
| 35 | |
| 36 | #define TYPE_HOST_IOMMU_DEVICE_IOMMUFD_VFIO \ |
| 37 | TYPE_HOST_IOMMU_DEVICE_IOMMUFD "-vfio" |
| 38 | |
| 39 | static bool iommufd_cdev_can_map_file_dma(MemoryRegion *mr, int *fd) |
| 40 | { |
| 41 | RAMBlock *rb = mr ? mr->ram_block : NULL; |
| 42 | |
| 43 | if (!rb) { |
| 44 | return false; |
| 45 | } |
| 46 | |
| 47 | *fd = qemu_ram_get_fd(rb); |
| 48 | if (*fd < 0) { |
| 49 | return false; |
| 50 | } |
| 51 | |
| 52 | /* |
| 53 | * Use iommufd_backend_map_file_dma() (IOMMU_IOAS_MAP_FILE) for: |
| 54 | * 1) Guest RAM blocks explicitly configured as shared (MAP_SHARED) |
| 55 | * 2) RAM device sub-regions (MMIO BARs) |
| 56 | * |
| 57 | * Private RAM mappings (MAP_PRIVATE) are excluded: copy-on-write |
| 58 | * semantics can cause their underlying PFNs to permanently diverge |
| 59 | * from the backing file. |
| 60 | */ |
| 61 | return qemu_ram_is_shared(rb) || memory_region_is_ram_device(mr); |
| 62 | } |
| 63 | |
| 64 | static int iommufd_cdev_map(const VFIOContainer *bcontainer, hwaddr iova, |
| 65 | uint64_t size, void *vaddr, bool readonly, |
| 66 | MemoryRegion *mr) |
| 67 | { |
| 68 | const VFIOIOMMUFDContainer *container = VFIO_IOMMU_IOMMUFD(bcontainer); |
| 69 | int fd; |
| 70 | |
| 71 | if (iommufd_cdev_can_map_file_dma(mr, &fd)) { |
| 72 | RAMBlock *rb = mr->ram_block; |
| 73 | unsigned long start = vaddr - qemu_ram_get_host_addr(rb); |
| 74 | unsigned long offset = qemu_ram_get_fd_offset(rb); |
| 75 | |
| 76 | return iommufd_backend_map_file_dma(container->be, container->ioas_id, |
| 77 | iova, size, fd, |
| 78 | start + offset, readonly); |
| 79 | } |
| 80 | |
| 81 | return iommufd_backend_map_dma(container->be, container->ioas_id, |
| 82 | iova, size, vaddr, readonly); |
| 83 | } |
| 84 | |
| 85 | static int iommufd_cdev_unmap(const VFIOContainer *bcontainer, |
| 86 | hwaddr iova, uint64_t size, |
| 87 | IOMMUTLBEntry *iotlb, bool unmap_all) |
| 88 | { |
| 89 | const VFIOIOMMUFDContainer *container = VFIO_IOMMU_IOMMUFD(bcontainer); |
| 90 | IOMMUFDBackend *be = container->be; |
| 91 | uint32_t ioas_id = container->ioas_id; |
| 92 | bool need_dirty_sync = false; |
| 93 | Error *local_err = NULL; |
| 94 | int ret, unmap_ret; |
| 95 | |
| 96 | if (unmap_all) { |
| 97 | size = UINT64_MAX; |
| 98 | } |
| 99 | |
| 100 | if (iotlb && vfio_container_dirty_tracking_is_started(bcontainer)) { |
| 101 | if (!vfio_container_devices_dirty_tracking_is_supported(bcontainer) && |
| 102 | bcontainer->dirty_pages_supported) { |
| 103 | ret = vfio_container_query_dirty_bitmap(bcontainer, iova, size, |
| 104 | IOMMU_HWPT_GET_DIRTY_BITMAP_NO_CLEAR, |
| 105 | iotlb->translated_addr, |
| 106 | &local_err); |
| 107 | if (ret) { |
| 108 | error_report_err(local_err); |
| 109 | } |
| 110 | /* Unmap stale mapping even if query dirty bitmap fails */ |
| 111 | unmap_ret = iommufd_backend_unmap_dma(be, ioas_id, iova, size); |
| 112 | |
| 113 | /* |
| 114 | * If dirty tracking fails, return the failure to VFIO core to |
| 115 | * fail the migration, or else there will be dirty pages missed |
| 116 | * to be migrated. |
| 117 | */ |
| 118 | return unmap_ret ? : ret; |
| 119 | } |
| 120 | |
| 121 | need_dirty_sync = true; |
| 122 | } |
| 123 | |
| 124 | ret = iommufd_backend_unmap_dma(be, ioas_id, iova, size); |
| 125 | if (ret) { |
| 126 | return ret; |
| 127 | } |
| 128 | |
| 129 | if (need_dirty_sync) { |
| 130 | ret = vfio_container_query_dirty_bitmap(bcontainer, iova, size, 0, |
| 131 | iotlb->translated_addr, |
| 132 | &local_err); |
| 133 | if (ret) { |
| 134 | error_report_err(local_err); |
| 135 | return ret; |
| 136 | } |
| 137 | } |
| 138 | |
| 139 | return 0; |
| 140 | } |
| 141 | |
| 142 | static bool iommufd_cdev_kvm_device_add(VFIODevice *vbasedev, Error **errp) |
| 143 | { |
| 144 | return !vfio_kvm_device_add_fd(vbasedev->fd, errp); |
| 145 | } |
| 146 | |
| 147 | static void iommufd_cdev_kvm_device_del(VFIODevice *vbasedev) |
| 148 | { |
| 149 | Error *err = NULL; |
| 150 | |
| 151 | if (vfio_kvm_device_del_fd(vbasedev->fd, &err)) { |
| 152 | error_report_err(err); |
| 153 | } |
| 154 | } |
| 155 | |
| 156 | static bool iommufd_cdev_connect_and_bind(VFIODevice *vbasedev, Error **errp) |
| 157 | { |
| 158 | IOMMUFDBackend *iommufd = vbasedev->iommufd; |
| 159 | struct vfio_device_bind_iommufd bind = { |
| 160 | .argsz = sizeof(bind), |
| 161 | .flags = 0, |
| 162 | }; |
| 163 | |
| 164 | if (!iommufd_backend_connect(iommufd, errp)) { |
| 165 | return false; |
| 166 | } |
| 167 | |
| 168 | /* |
| 169 | * Add device to kvm-vfio to be prepared for the tracking |
| 170 | * in KVM. Especially for some emulated devices, it requires |
| 171 | * to have kvm information in the device open. |
| 172 | */ |
| 173 | if (!iommufd_cdev_kvm_device_add(vbasedev, errp)) { |
| 174 | goto err_kvm_device_add; |
| 175 | } |
| 176 | |
| 177 | if (cpr_is_incoming()) { |
| 178 | goto skip_bind; |
| 179 | } |
| 180 | |
| 181 | /* Bind device to iommufd */ |
| 182 | bind.iommufd = iommufd->fd; |
| 183 | if (ioctl(vbasedev->fd, VFIO_DEVICE_BIND_IOMMUFD, &bind)) { |
| 184 | error_setg_errno(errp, errno, "error bind device fd=%d to iommufd=%d", |
| 185 | vbasedev->fd, bind.iommufd); |
| 186 | goto err_bind; |
| 187 | } |
| 188 | |
| 189 | vbasedev->devid = bind.out_devid; |
| 190 | trace_iommufd_cdev_connect_and_bind(bind.iommufd, vbasedev->name, |
| 191 | vbasedev->fd, vbasedev->devid); |
| 192 | |
| 193 | skip_bind: |
| 194 | return true; |
| 195 | err_bind: |
| 196 | iommufd_cdev_kvm_device_del(vbasedev); |
| 197 | err_kvm_device_add: |
| 198 | iommufd_backend_disconnect(iommufd); |
| 199 | return false; |
| 200 | } |
| 201 | |
| 202 | static void iommufd_cdev_unbind_and_disconnect(VFIODevice *vbasedev) |
| 203 | { |
| 204 | /* Unbind is automatically conducted when device fd is closed */ |
| 205 | iommufd_cdev_kvm_device_del(vbasedev); |
| 206 | iommufd_backend_disconnect(vbasedev->iommufd); |
| 207 | } |
| 208 | |
| 209 | static bool iommufd_hwpt_dirty_tracking(VFIOIOASHwpt *hwpt) |
| 210 | { |
| 211 | return hwpt && hwpt->hwpt_flags & IOMMU_HWPT_ALLOC_DIRTY_TRACKING; |
| 212 | } |
| 213 | |
| 214 | static int iommufd_set_dirty_page_tracking(const VFIOContainer *bcontainer, |
| 215 | bool start, Error **errp) |
| 216 | { |
| 217 | const VFIOIOMMUFDContainer *container = VFIO_IOMMU_IOMMUFD(bcontainer); |
| 218 | VFIOIOASHwpt *hwpt; |
| 219 | |
| 220 | QLIST_FOREACH(hwpt, &container->hwpt_list, next) { |
| 221 | if (!iommufd_hwpt_dirty_tracking(hwpt)) { |
| 222 | continue; |
| 223 | } |
| 224 | |
| 225 | if (!iommufd_backend_set_dirty_tracking(container->be, |
| 226 | hwpt->hwpt_id, start, errp)) { |
| 227 | goto err; |
| 228 | } |
| 229 | } |
| 230 | |
| 231 | return 0; |
| 232 | |
| 233 | err: |
| 234 | QLIST_FOREACH(hwpt, &container->hwpt_list, next) { |
| 235 | if (!iommufd_hwpt_dirty_tracking(hwpt)) { |
| 236 | continue; |
| 237 | } |
| 238 | iommufd_backend_set_dirty_tracking(container->be, |
| 239 | hwpt->hwpt_id, !start, NULL); |
| 240 | } |
| 241 | return -EINVAL; |
| 242 | } |
| 243 | |
| 244 | static int iommufd_query_dirty_bitmap(const VFIOContainer *bcontainer, |
| 245 | VFIOBitmap *vbmap, hwaddr iova, |
| 246 | hwaddr size, uint64_t backend_flag, |
| 247 | Error **errp) |
| 248 | { |
| 249 | VFIOIOMMUFDContainer *container = VFIO_IOMMU_IOMMUFD(bcontainer); |
| 250 | unsigned long page_size = qemu_real_host_page_size(); |
| 251 | VFIOIOASHwpt *hwpt; |
| 252 | |
| 253 | QLIST_FOREACH(hwpt, &container->hwpt_list, next) { |
| 254 | if (!iommufd_hwpt_dirty_tracking(hwpt)) { |
| 255 | continue; |
| 256 | } |
| 257 | |
| 258 | if (!iommufd_backend_get_dirty_bitmap(container->be, hwpt->hwpt_id, |
| 259 | iova, size, page_size, |
| 260 | (uint64_t *)vbmap->bitmap, |
| 261 | backend_flag, errp)) { |
| 262 | return -EINVAL; |
| 263 | } |
| 264 | } |
| 265 | |
| 266 | return 0; |
| 267 | } |
| 268 | |
| 269 | static int iommufd_cdev_getfd(const char *sysfs_path, Error **errp) |
| 270 | { |
| 271 | ERRP_GUARD(); |
| 272 | long int ret = -ENOTTY; |
| 273 | g_autofree char *path = NULL; |
| 274 | g_autofree char *vfio_dev_path = NULL; |
| 275 | g_autofree char *vfio_path = NULL; |
| 276 | DIR *dir = NULL; |
| 277 | struct dirent *dent; |
| 278 | g_autofree gchar *contents = NULL; |
| 279 | gsize length; |
| 280 | int major, minor; |
| 281 | dev_t vfio_devt; |
| 282 | |
| 283 | path = g_strdup_printf("%s/vfio-dev", sysfs_path); |
| 284 | dir = opendir(path); |
| 285 | if (!dir) { |
| 286 | error_setg_errno(errp, errno, "couldn't open directory %s", path); |
| 287 | goto out; |
| 288 | } |
| 289 | |
| 290 | while ((dent = readdir(dir))) { |
| 291 | if (!strncmp(dent->d_name, "vfio", 4)) { |
| 292 | vfio_dev_path = g_strdup_printf("%s/%s/dev", path, dent->d_name); |
| 293 | break; |
| 294 | } |
| 295 | } |
| 296 | |
| 297 | if (!vfio_dev_path) { |
| 298 | error_setg(errp, "failed to find vfio-dev/vfioX/dev"); |
| 299 | goto out_close_dir; |
| 300 | } |
| 301 | |
| 302 | if (!g_file_get_contents(vfio_dev_path, &contents, &length, NULL)) { |
| 303 | error_setg(errp, |
| 304 | "failed to load \"%s\"" |
| 305 | " (is your kernel config missing CONFIG_VFIO_DEVICE_CDEV?)", |
| 306 | vfio_dev_path); |
| 307 | goto out_close_dir; |
| 308 | } |
| 309 | |
| 310 | if (sscanf(contents, "%d:%d", &major, &minor) != 2) { |
| 311 | error_setg(errp, "failed to get major:minor for \"%s\"", vfio_dev_path); |
| 312 | goto out_close_dir; |
| 313 | } |
| 314 | vfio_devt = makedev(major, minor); |
| 315 | |
| 316 | vfio_path = g_strdup_printf("/dev/vfio/devices/%s", dent->d_name); |
| 317 | ret = open_cdev(vfio_path, vfio_devt); |
| 318 | if (ret < 0) { |
| 319 | error_setg(errp, "Failed to open %s", vfio_path); |
| 320 | } |
| 321 | |
| 322 | trace_iommufd_cdev_getfd(vfio_path, ret); |
| 323 | |
| 324 | out_close_dir: |
| 325 | closedir(dir); |
| 326 | out: |
| 327 | if (*errp) { |
| 328 | error_prepend(errp, VFIO_MSG_PREFIX, path); |
| 329 | } |
| 330 | |
| 331 | return ret; |
| 332 | } |
| 333 | |
| 334 | static int iommufd_cdev_pasid_attach_ioas_hwpt(VFIODevice *vbasedev, |
| 335 | uint32_t pasid, uint32_t id, |
| 336 | Error **errp) |
| 337 | { |
| 338 | int iommufd = vbasedev->iommufd->fd; |
| 339 | struct vfio_device_attach_iommufd_pt attach_data = { |
| 340 | .argsz = sizeof(attach_data), |
| 341 | .flags = pasid == IOMMU_NO_PASID ? 0 : VFIO_DEVICE_ATTACH_PASID, |
| 342 | .pasid = pasid, |
| 343 | .pt_id = id, |
| 344 | }; |
| 345 | |
| 346 | /* Attach device to an IOAS or hwpt within iommufd */ |
| 347 | if (ioctl(vbasedev->fd, VFIO_DEVICE_ATTACH_IOMMUFD_PT, &attach_data)) { |
| 348 | error_setg_errno(errp, errno, |
| 349 | "[iommufd=%d] error attach %s (%d) pasid %d to id=%d", |
| 350 | iommufd, vbasedev->name, vbasedev->fd, pasid, id); |
| 351 | return -errno; |
| 352 | } |
| 353 | |
| 354 | trace_iommufd_cdev_pasid_attach_ioas_hwpt(iommufd, vbasedev->name, |
| 355 | vbasedev->fd, pasid, id); |
| 356 | return 0; |
| 357 | } |
| 358 | |
| 359 | static bool iommufd_cdev_pasid_detach_ioas_hwpt(VFIODevice *vbasedev, |
| 360 | uint32_t pasid, Error **errp) |
| 361 | { |
| 362 | int iommufd = vbasedev->iommufd->fd; |
| 363 | struct vfio_device_detach_iommufd_pt detach_data = { |
| 364 | .argsz = sizeof(detach_data), |
| 365 | .flags = pasid == IOMMU_NO_PASID ? 0 : VFIO_DEVICE_DETACH_PASID, |
| 366 | .pasid = pasid, |
| 367 | }; |
| 368 | |
| 369 | if (ioctl(vbasedev->fd, VFIO_DEVICE_DETACH_IOMMUFD_PT, &detach_data)) { |
| 370 | error_setg_errno(errp, errno, "detach %s pasid %d failed", |
| 371 | vbasedev->name, pasid); |
| 372 | return false; |
| 373 | } |
| 374 | |
| 375 | trace_iommufd_cdev_pasid_detach_ioas_hwpt(iommufd, vbasedev->name, pasid); |
| 376 | return true; |
| 377 | } |
| 378 | |
| 379 | static bool iommufd_cdev_autodomains_get(VFIODevice *vbasedev, |
| 380 | VFIOIOMMUFDContainer *container, |
| 381 | Error **errp) |
| 382 | { |
| 383 | ERRP_GUARD(); |
| 384 | IOMMUFDBackend *iommufd = vbasedev->iommufd; |
| 385 | VFIOContainer *bcontainer = VFIO_IOMMU(container); |
| 386 | bool viommu_nesting, viommu_nesting_dirty; |
| 387 | uint32_t type = IOMMU_HW_INFO_TYPE_DEFAULT, flags = 0; |
| 388 | uint64_t hw_caps; |
| 389 | VendorCaps caps; |
| 390 | VFIOIOASHwpt *hwpt; |
| 391 | uint32_t hwpt_id; |
| 392 | uint8_t max_pasid_log2 = 0; |
| 393 | int ret; |
| 394 | |
| 395 | /* Try to find a domain */ |
| 396 | QLIST_FOREACH(hwpt, &container->hwpt_list, next) { |
| 397 | if (!cpr_is_incoming()) { |
| 398 | ret = iommufd_cdev_pasid_attach_ioas_hwpt(vbasedev, IOMMU_NO_PASID, |
| 399 | hwpt->hwpt_id, errp); |
| 400 | } else if (vbasedev->cpr.hwpt_id == hwpt->hwpt_id) { |
| 401 | ret = 0; |
| 402 | } else { |
| 403 | continue; |
| 404 | } |
| 405 | |
| 406 | if (ret) { |
| 407 | /* -EINVAL means the domain is incompatible with the device. */ |
| 408 | if (ret == -EINVAL) { |
| 409 | /* |
| 410 | * It is an expected failure and it just means we will try |
| 411 | * another domain, or create one if no existing compatible |
| 412 | * domain is found. Hence why the error is discarded below. |
| 413 | */ |
| 414 | error_free(*errp); |
| 415 | *errp = NULL; |
| 416 | continue; |
| 417 | } |
| 418 | |
| 419 | return false; |
| 420 | } else { |
| 421 | vbasedev->hwpt = hwpt; |
| 422 | vbasedev->cpr.hwpt_id = hwpt->hwpt_id; |
| 423 | QLIST_INSERT_HEAD(&hwpt->device_list, vbasedev, hwpt_next); |
| 424 | vbasedev->iommu_dirty_tracking = iommufd_hwpt_dirty_tracking(hwpt); |
| 425 | return true; |
| 426 | } |
| 427 | } |
| 428 | |
| 429 | /* |
| 430 | * This is quite early and VFIO Migration state isn't yet fully |
| 431 | * initialized, thus rely only on IOMMU hardware capabilities as to |
| 432 | * whether IOMMU dirty tracking is going to be requested. Later |
| 433 | * vfio_migration_realize() may decide to use VF dirty tracking |
| 434 | * instead. |
| 435 | */ |
| 436 | if (!iommufd_backend_get_device_info(vbasedev->iommufd, vbasedev->devid, |
| 437 | &type, &caps, sizeof(caps), &hw_caps, |
| 438 | &max_pasid_log2, errp)) { |
| 439 | return false; |
| 440 | } |
| 441 | |
| 442 | viommu_nesting = vfio_device_get_viommu_flags_want_nesting(vbasedev); |
| 443 | viommu_nesting_dirty = |
| 444 | vfio_device_get_viommu_flags_want_nesting_dirty(vbasedev); |
| 445 | |
| 446 | if (hw_caps & IOMMU_HW_CAP_DIRTY_TRACKING) { |
| 447 | if (!viommu_nesting || viommu_nesting_dirty) { |
| 448 | flags |= IOMMU_HWPT_ALLOC_DIRTY_TRACKING; |
| 449 | } |
| 450 | } |
| 451 | |
| 452 | /* |
| 453 | * If vIOMMU requests VFIO's cooperation to create nesting parent HWPT, |
| 454 | * force to create it so that it could be reused by vIOMMU to create |
| 455 | * nested HWPT. |
| 456 | */ |
| 457 | if (viommu_nesting) { |
| 458 | flags |= IOMMU_HWPT_ALLOC_NEST_PARENT; |
| 459 | |
| 460 | if (vfio_device_get_host_iommu_quirk_bypass_ro(vbasedev, type, |
| 461 | &caps, sizeof(caps))) { |
| 462 | bcontainer->bypass_ro = true; |
| 463 | } |
| 464 | } |
| 465 | |
| 466 | if (max_pasid_log2 && |
| 467 | vfio_device_get_viommu_flags_want_pasid_attach(vbasedev)) { |
| 468 | flags |= IOMMU_HWPT_ALLOC_PASID; |
| 469 | } |
| 470 | |
| 471 | if (cpr_is_incoming()) { |
| 472 | hwpt_id = vbasedev->cpr.hwpt_id; |
| 473 | goto skip_alloc; |
| 474 | } |
| 475 | |
| 476 | if (!iommufd_backend_alloc_hwpt(iommufd, vbasedev->devid, |
| 477 | container->ioas_id, flags, |
| 478 | IOMMU_HWPT_DATA_NONE, 0, NULL, |
| 479 | &hwpt_id, errp)) { |
| 480 | return false; |
| 481 | } |
| 482 | |
| 483 | ret = iommufd_cdev_pasid_attach_ioas_hwpt(vbasedev, IOMMU_NO_PASID, hwpt_id, |
| 484 | errp); |
| 485 | if (ret) { |
| 486 | iommufd_backend_free_id(container->be, hwpt_id); |
| 487 | return false; |
| 488 | } |
| 489 | |
| 490 | skip_alloc: |
| 491 | hwpt = g_malloc0(sizeof(*hwpt)); |
| 492 | hwpt->hwpt_id = hwpt_id; |
| 493 | hwpt->hwpt_flags = flags; |
| 494 | QLIST_INIT(&hwpt->device_list); |
| 495 | |
| 496 | vbasedev->hwpt = hwpt; |
| 497 | vbasedev->cpr.hwpt_id = hwpt->hwpt_id; |
| 498 | vbasedev->iommu_dirty_tracking = iommufd_hwpt_dirty_tracking(hwpt); |
| 499 | QLIST_INSERT_HEAD(&hwpt->device_list, vbasedev, hwpt_next); |
| 500 | QLIST_INSERT_HEAD(&container->hwpt_list, hwpt, next); |
| 501 | bcontainer->dirty_pages_supported |= |
| 502 | vbasedev->iommu_dirty_tracking; |
| 503 | if (bcontainer->dirty_pages_supported && |
| 504 | !vbasedev->iommu_dirty_tracking) { |
| 505 | warn_report("IOMMU instance for device %s doesn't support dirty tracking", |
| 506 | vbasedev->name); |
| 507 | } |
| 508 | return true; |
| 509 | } |
| 510 | |
| 511 | static void iommufd_cdev_autodomains_put(VFIODevice *vbasedev, |
| 512 | VFIOIOMMUFDContainer *container) |
| 513 | { |
| 514 | VFIOIOASHwpt *hwpt = vbasedev->hwpt; |
| 515 | |
| 516 | QLIST_REMOVE(vbasedev, hwpt_next); |
| 517 | vbasedev->hwpt = NULL; |
| 518 | |
| 519 | if (QLIST_EMPTY(&hwpt->device_list)) { |
| 520 | QLIST_REMOVE(hwpt, next); |
| 521 | iommufd_backend_free_id(container->be, hwpt->hwpt_id); |
| 522 | g_free(hwpt); |
| 523 | } |
| 524 | } |
| 525 | |
| 526 | static bool iommufd_cdev_attach_container(VFIODevice *vbasedev, |
| 527 | VFIOIOMMUFDContainer *container, |
| 528 | Error **errp) |
| 529 | { |
| 530 | /* mdevs aren't physical devices and will fail with auto domains */ |
| 531 | if (!vbasedev->mdev) { |
| 532 | return iommufd_cdev_autodomains_get(vbasedev, container, errp); |
| 533 | } |
| 534 | |
| 535 | /* If CPR, we are already attached to ioas_id. */ |
| 536 | return cpr_is_incoming() || |
| 537 | !iommufd_cdev_pasid_attach_ioas_hwpt(vbasedev, IOMMU_NO_PASID, |
| 538 | container->ioas_id, errp); |
| 539 | } |
| 540 | |
| 541 | static void iommufd_cdev_detach_container(VFIODevice *vbasedev, |
| 542 | VFIOIOMMUFDContainer *container) |
| 543 | { |
| 544 | Error *err = NULL; |
| 545 | |
| 546 | if (!iommufd_cdev_pasid_detach_ioas_hwpt(vbasedev, IOMMU_NO_PASID, &err)) { |
| 547 | error_report_err(err); |
| 548 | } |
| 549 | |
| 550 | if (vbasedev->hwpt) { |
| 551 | iommufd_cdev_autodomains_put(vbasedev, container); |
| 552 | } |
| 553 | |
| 554 | } |
| 555 | |
| 556 | static void iommufd_cdev_container_destroy(VFIOIOMMUFDContainer *container) |
| 557 | { |
| 558 | VFIOContainer *bcontainer = VFIO_IOMMU(container); |
| 559 | |
| 560 | if (!QLIST_EMPTY(&bcontainer->device_list)) { |
| 561 | return; |
| 562 | } |
| 563 | vfio_iommufd_cpr_unregister_container(container); |
| 564 | vfio_listener_unregister(bcontainer); |
| 565 | iommufd_backend_free_id(container->be, container->ioas_id); |
| 566 | object_unref(container); |
| 567 | } |
| 568 | |
| 569 | static int iommufd_cdev_ram_block_discard_disable(bool state) |
| 570 | { |
| 571 | /* |
| 572 | * We support coordinated discarding of RAM via the RamDiscardManager. |
| 573 | */ |
| 574 | return ram_block_uncoordinated_discard_disable(state); |
| 575 | } |
| 576 | |
| 577 | static bool iommufd_cdev_get_info_iova_range(VFIOIOMMUFDContainer *container, |
| 578 | uint32_t ioas_id, Error **errp) |
| 579 | { |
| 580 | VFIOContainer *bcontainer = VFIO_IOMMU(container); |
| 581 | g_autofree struct iommu_ioas_iova_ranges *info = NULL; |
| 582 | struct iommu_iova_range *iova_ranges; |
| 583 | int sz, fd = container->be->fd; |
| 584 | |
| 585 | info = g_malloc0(sizeof(*info)); |
| 586 | info->size = sizeof(*info); |
| 587 | info->ioas_id = ioas_id; |
| 588 | |
| 589 | if (ioctl(fd, IOMMU_IOAS_IOVA_RANGES, info) && errno != EMSGSIZE) { |
| 590 | goto error; |
| 591 | } |
| 592 | |
| 593 | sz = info->num_iovas * sizeof(struct iommu_iova_range); |
| 594 | info = g_realloc(info, sizeof(*info) + sz); |
| 595 | info->allowed_iovas = (uintptr_t)(info + 1); |
| 596 | |
| 597 | if (ioctl(fd, IOMMU_IOAS_IOVA_RANGES, info)) { |
| 598 | goto error; |
| 599 | } |
| 600 | |
| 601 | iova_ranges = (struct iommu_iova_range *)(uintptr_t)info->allowed_iovas; |
| 602 | |
| 603 | for (int i = 0; i < info->num_iovas; i++) { |
| 604 | Range *range = g_new(Range, 1); |
| 605 | |
| 606 | range_set_bounds(range, iova_ranges[i].start, iova_ranges[i].last); |
| 607 | bcontainer->iova_ranges = |
| 608 | range_list_insert(bcontainer->iova_ranges, range); |
| 609 | } |
| 610 | bcontainer->pgsizes = info->out_iova_alignment; |
| 611 | |
| 612 | return true; |
| 613 | |
| 614 | error: |
| 615 | error_setg_errno(errp, errno, "Cannot get IOVA ranges"); |
| 616 | return false; |
| 617 | } |
| 618 | |
| 619 | static bool iommufd_cdev_attach(const char *name, VFIODevice *vbasedev, |
| 620 | AddressSpace *as, Error **errp) |
| 621 | { |
| 622 | VFIOContainer *bcontainer; |
| 623 | VFIOIOMMUFDContainer *container; |
| 624 | VFIOAddressSpace *space; |
| 625 | struct vfio_device_info dev_info = { .argsz = sizeof(dev_info) }; |
| 626 | int ret, devfd; |
| 627 | bool res; |
| 628 | uint32_t ioas_id; |
| 629 | Error *err = NULL; |
| 630 | const VFIOIOMMUClass *iommufd_vioc = |
| 631 | VFIO_IOMMU_CLASS(object_class_by_name(TYPE_VFIO_IOMMU_IOMMUFD)); |
| 632 | |
| 633 | vfio_cpr_load_device(vbasedev); |
| 634 | |
| 635 | if (vbasedev->fd < 0) { |
| 636 | devfd = iommufd_cdev_getfd(vbasedev->sysfsdev, errp); |
| 637 | if (devfd < 0) { |
| 638 | return false; |
| 639 | } |
| 640 | vbasedev->fd = devfd; |
| 641 | } else { |
| 642 | devfd = vbasedev->fd; |
| 643 | } |
| 644 | |
| 645 | if (!iommufd_cdev_connect_and_bind(vbasedev, errp)) { |
| 646 | goto err_connect_bind; |
| 647 | } |
| 648 | |
| 649 | space = vfio_address_space_get(as); |
| 650 | |
| 651 | /* try to attach to an existing container in this space */ |
| 652 | QLIST_FOREACH(bcontainer, &space->containers, next) { |
| 653 | container = VFIO_IOMMU_IOMMUFD(bcontainer); |
| 654 | if (VFIO_IOMMU_GET_CLASS(bcontainer) != iommufd_vioc || |
| 655 | vbasedev->iommufd != container->be) { |
| 656 | continue; |
| 657 | } |
| 658 | |
| 659 | if (!cpr_is_incoming() || |
| 660 | (vbasedev->cpr.ioas_id == container->ioas_id)) { |
| 661 | res = iommufd_cdev_attach_container(vbasedev, container, &err); |
| 662 | } else { |
| 663 | continue; |
| 664 | } |
| 665 | |
| 666 | if (!res) { |
| 667 | const char *msg = error_get_pretty(err); |
| 668 | |
| 669 | trace_iommufd_cdev_fail_attach_existing_container(msg); |
| 670 | error_free(err); |
| 671 | err = NULL; |
| 672 | } else { |
| 673 | ret = iommufd_cdev_ram_block_discard_disable(true); |
| 674 | if (ret) { |
| 675 | error_setg_errno(errp, -ret, |
| 676 | "Cannot set discarding of RAM broken"); |
| 677 | goto err_discard_disable; |
| 678 | } |
| 679 | goto found_container; |
| 680 | } |
| 681 | } |
| 682 | |
| 683 | if (cpr_is_incoming()) { |
| 684 | ioas_id = vbasedev->cpr.ioas_id; |
| 685 | goto skip_ioas_alloc; |
| 686 | } |
| 687 | |
| 688 | /* Need to allocate a new dedicated container */ |
| 689 | if (!iommufd_backend_alloc_ioas(vbasedev->iommufd, &ioas_id, errp)) { |
| 690 | goto err_alloc_ioas; |
| 691 | } |
| 692 | |
| 693 | trace_iommufd_cdev_alloc_ioas(vbasedev->iommufd->fd, ioas_id); |
| 694 | |
| 695 | skip_ioas_alloc: |
| 696 | container = VFIO_IOMMU_IOMMUFD(object_new(TYPE_VFIO_IOMMU_IOMMUFD)); |
| 697 | container->be = vbasedev->iommufd; |
| 698 | container->ioas_id = ioas_id; |
| 699 | QLIST_INIT(&container->hwpt_list); |
| 700 | |
| 701 | bcontainer = VFIO_IOMMU(container); |
| 702 | vfio_address_space_insert(space, bcontainer); |
| 703 | |
| 704 | if (!iommufd_cdev_attach_container(vbasedev, container, errp)) { |
| 705 | goto err_attach_container; |
| 706 | } |
| 707 | |
| 708 | ret = iommufd_cdev_ram_block_discard_disable(true); |
| 709 | if (ret) { |
| 710 | error_setg_errno(errp, -ret, "Cannot set discarding of RAM broken"); |
| 711 | goto err_discard_disable; |
| 712 | } |
| 713 | |
| 714 | if (!iommufd_cdev_get_info_iova_range(container, ioas_id, &err)) { |
| 715 | error_append_hint(&err, |
| 716 | "Fallback to default 64bit IOVA range and 4K page size\n"); |
| 717 | warn_report_err(err); |
| 718 | err = NULL; |
| 719 | bcontainer->pgsizes = qemu_real_host_page_size(); |
| 720 | } |
| 721 | |
| 722 | if (!vfio_listener_register(bcontainer, errp)) { |
| 723 | goto err_listener_register; |
| 724 | } |
| 725 | |
| 726 | if (!vfio_iommufd_cpr_register_container(container, errp)) { |
| 727 | goto err_listener_register; |
| 728 | } |
| 729 | |
| 730 | bcontainer->initialized = true; |
| 731 | |
| 732 | found_container: |
| 733 | vbasedev->cpr.ioas_id = container->ioas_id; |
| 734 | |
| 735 | ret = ioctl(devfd, VFIO_DEVICE_GET_INFO, &dev_info); |
| 736 | if (ret) { |
| 737 | error_setg_errno(errp, errno, "error getting device info"); |
| 738 | goto err_listener_register; |
| 739 | } |
| 740 | |
| 741 | /* |
| 742 | * Do not move this code before attachment! The nested IOMMU support |
| 743 | * needs device and hwpt id which are generated only after attachment. |
| 744 | */ |
| 745 | if (!vfio_device_hiod_create_and_realize(vbasedev, |
| 746 | TYPE_HOST_IOMMU_DEVICE_IOMMUFD_VFIO, errp)) { |
| 747 | goto err_listener_register; |
| 748 | } |
| 749 | |
| 750 | /* |
| 751 | * TODO: examine RAM_BLOCK_DISCARD stuff, should we do group level |
| 752 | * for discarding incompatibility check as well? |
| 753 | */ |
| 754 | if (vbasedev->ram_block_discard_allowed) { |
| 755 | iommufd_cdev_ram_block_discard_disable(false); |
| 756 | } |
| 757 | |
| 758 | vfio_device_prepare(vbasedev, bcontainer, &dev_info); |
| 759 | vfio_iommufd_cpr_register_device(vbasedev); |
| 760 | |
| 761 | trace_iommufd_cdev_device_info(vbasedev->name, devfd, vbasedev->num_irqs, |
| 762 | vbasedev->num_initial_regions, |
| 763 | vbasedev->flags); |
| 764 | return true; |
| 765 | |
| 766 | err_listener_register: |
| 767 | iommufd_cdev_ram_block_discard_disable(false); |
| 768 | err_discard_disable: |
| 769 | iommufd_cdev_detach_container(vbasedev, container); |
| 770 | err_attach_container: |
| 771 | iommufd_cdev_container_destroy(container); |
| 772 | err_alloc_ioas: |
| 773 | vfio_address_space_put(space); |
| 774 | iommufd_cdev_unbind_and_disconnect(vbasedev); |
| 775 | err_connect_bind: |
| 776 | close(vbasedev->fd); |
| 777 | return false; |
| 778 | } |
| 779 | |
| 780 | static void iommufd_cdev_detach(VFIODevice *vbasedev) |
| 781 | { |
| 782 | VFIOContainer *bcontainer = vbasedev->bcontainer; |
| 783 | VFIOAddressSpace *space = bcontainer->space; |
| 784 | VFIOIOMMUFDContainer *container = VFIO_IOMMU_IOMMUFD(bcontainer); |
| 785 | |
| 786 | vfio_device_unprepare(vbasedev); |
| 787 | |
| 788 | if (!vbasedev->ram_block_discard_allowed) { |
| 789 | iommufd_cdev_ram_block_discard_disable(false); |
| 790 | } |
| 791 | |
| 792 | object_unref(vbasedev->hiod); |
| 793 | iommufd_cdev_detach_container(vbasedev, container); |
| 794 | iommufd_cdev_container_destroy(container); |
| 795 | vfio_address_space_put(space); |
| 796 | |
| 797 | vfio_iommufd_cpr_unregister_device(vbasedev); |
| 798 | iommufd_cdev_unbind_and_disconnect(vbasedev); |
| 799 | close(vbasedev->fd); |
| 800 | } |
| 801 | |
| 802 | static VFIODevice *iommufd_cdev_pci_find_by_devid(__u32 devid) |
| 803 | { |
| 804 | VFIODevice *vbasedev_iter; |
| 805 | const VFIOIOMMUClass *iommufd_vioc = |
| 806 | VFIO_IOMMU_CLASS(object_class_by_name(TYPE_VFIO_IOMMU_IOMMUFD)); |
| 807 | |
| 808 | QLIST_FOREACH(vbasedev_iter, &vfio_device_list, global_next) { |
| 809 | if (VFIO_IOMMU_GET_CLASS(vbasedev_iter->bcontainer) != iommufd_vioc) { |
| 810 | continue; |
| 811 | } |
| 812 | if (devid == vbasedev_iter->devid) { |
| 813 | return vbasedev_iter; |
| 814 | } |
| 815 | } |
| 816 | return NULL; |
| 817 | } |
| 818 | |
| 819 | static VFIOPCIDevice * |
| 820 | iommufd_cdev_dep_get_realized_vpdev(struct vfio_pci_dependent_device *dep_dev, |
| 821 | VFIODevice *reset_dev) |
| 822 | { |
| 823 | VFIODevice *vbasedev_tmp; |
| 824 | |
| 825 | if (dep_dev->devid == reset_dev->devid || |
| 826 | dep_dev->devid == VFIO_PCI_DEVID_OWNED) { |
| 827 | return NULL; |
| 828 | } |
| 829 | |
| 830 | vbasedev_tmp = iommufd_cdev_pci_find_by_devid(dep_dev->devid); |
| 831 | if (!vfio_pci_from_vfio_device(vbasedev_tmp) || |
| 832 | !qdev_is_realized(vbasedev_tmp->dev)) { |
| 833 | return NULL; |
| 834 | } |
| 835 | |
| 836 | return container_of(vbasedev_tmp, VFIOPCIDevice, vbasedev); |
| 837 | } |
| 838 | |
| 839 | static int iommufd_cdev_pci_hot_reset(VFIODevice *vbasedev, bool single) |
| 840 | { |
| 841 | VFIOPCIDevice *vdev = container_of(vbasedev, VFIOPCIDevice, vbasedev); |
| 842 | struct vfio_pci_hot_reset_info *info = NULL; |
| 843 | struct vfio_pci_dependent_device *devices; |
| 844 | struct vfio_pci_hot_reset *reset; |
| 845 | int ret, i; |
| 846 | bool multi = false; |
| 847 | |
| 848 | trace_vfio_pci_hot_reset(vdev->vbasedev.name, single ? "one" : "multi"); |
| 849 | |
| 850 | if (!single) { |
| 851 | vfio_pci_pre_reset(vdev); |
| 852 | } |
| 853 | vdev->vbasedev.needs_reset = false; |
| 854 | |
| 855 | ret = vfio_pci_get_pci_hot_reset_info(vdev, &info); |
| 856 | |
| 857 | if (ret) { |
| 858 | goto out_single; |
| 859 | } |
| 860 | |
| 861 | assert(info->flags & VFIO_PCI_HOT_RESET_FLAG_DEV_ID); |
| 862 | |
| 863 | devices = &info->devices[0]; |
| 864 | |
| 865 | if (!(info->flags & VFIO_PCI_HOT_RESET_FLAG_DEV_ID_OWNED)) { |
| 866 | if (!vdev->has_pm_reset) { |
| 867 | for (i = 0; i < info->count; i++) { |
| 868 | if (devices[i].devid == VFIO_PCI_DEVID_NOT_OWNED) { |
| 869 | error_report("vfio: Cannot reset device %s, " |
| 870 | "depends on device %04x:%02x:%02x.%x " |
| 871 | "which is not owned.", |
| 872 | vdev->vbasedev.name, devices[i].segment, |
| 873 | devices[i].bus, PCI_SLOT(devices[i].devfn), |
| 874 | PCI_FUNC(devices[i].devfn)); |
| 875 | } |
| 876 | } |
| 877 | } |
| 878 | ret = -EPERM; |
| 879 | goto out_single; |
| 880 | } |
| 881 | |
| 882 | trace_vfio_pci_hot_reset_has_dep_devices(vdev->vbasedev.name); |
| 883 | |
| 884 | for (i = 0; i < info->count; i++) { |
| 885 | VFIOPCIDevice *tmp; |
| 886 | |
| 887 | trace_iommufd_cdev_pci_hot_reset_dep_devices(devices[i].segment, |
| 888 | devices[i].bus, |
| 889 | PCI_SLOT(devices[i].devfn), |
| 890 | PCI_FUNC(devices[i].devfn), |
| 891 | devices[i].devid); |
| 892 | |
| 893 | /* |
| 894 | * If a VFIO cdev device is resettable, all the dependent devices |
| 895 | * are either bound to same iommufd or within same iommu_groups as |
| 896 | * one of the iommufd bound devices. |
| 897 | */ |
| 898 | assert(devices[i].devid != VFIO_PCI_DEVID_NOT_OWNED); |
| 899 | |
| 900 | tmp = iommufd_cdev_dep_get_realized_vpdev(&devices[i], &vdev->vbasedev); |
| 901 | if (!tmp) { |
| 902 | continue; |
| 903 | } |
| 904 | |
| 905 | if (single) { |
| 906 | ret = -EINVAL; |
| 907 | goto out_single; |
| 908 | } |
| 909 | vfio_pci_pre_reset(tmp); |
| 910 | tmp->vbasedev.needs_reset = false; |
| 911 | multi = true; |
| 912 | } |
| 913 | |
| 914 | if (!single && !multi) { |
| 915 | ret = -EINVAL; |
| 916 | goto out_single; |
| 917 | } |
| 918 | |
| 919 | /* Use zero length array for hot reset with iommufd backend */ |
| 920 | reset = g_malloc0(sizeof(*reset)); |
| 921 | reset->argsz = sizeof(*reset); |
| 922 | |
| 923 | /* Bus reset! */ |
| 924 | ret = ioctl(vdev->vbasedev.fd, VFIO_DEVICE_PCI_HOT_RESET, reset); |
| 925 | g_free(reset); |
| 926 | if (ret) { |
| 927 | ret = -errno; |
| 928 | } |
| 929 | |
| 930 | trace_vfio_pci_hot_reset_result(vdev->vbasedev.name, |
| 931 | ret ? strerror(errno) : "Success"); |
| 932 | |
| 933 | /* Re-enable INTx on affected devices */ |
| 934 | for (i = 0; i < info->count; i++) { |
| 935 | VFIOPCIDevice *tmp; |
| 936 | |
| 937 | tmp = iommufd_cdev_dep_get_realized_vpdev(&devices[i], &vdev->vbasedev); |
| 938 | if (!tmp) { |
| 939 | continue; |
| 940 | } |
| 941 | vfio_pci_post_reset(tmp); |
| 942 | } |
| 943 | out_single: |
| 944 | if (!single) { |
| 945 | vfio_pci_post_reset(vdev); |
| 946 | } |
| 947 | g_free(info); |
| 948 | |
| 949 | return ret; |
| 950 | } |
| 951 | |
| 952 | static void vfio_iommu_iommufd_class_init(ObjectClass *klass, const void *data) |
| 953 | { |
| 954 | VFIOIOMMUClass *vioc = VFIO_IOMMU_CLASS(klass); |
| 955 | |
| 956 | vioc->dma_map = iommufd_cdev_map; |
| 957 | vioc->dma_unmap = iommufd_cdev_unmap; |
| 958 | vioc->attach_device = iommufd_cdev_attach; |
| 959 | vioc->detach_device = iommufd_cdev_detach; |
| 960 | vioc->pci_hot_reset = iommufd_cdev_pci_hot_reset; |
| 961 | vioc->set_dirty_page_tracking = iommufd_set_dirty_page_tracking; |
| 962 | vioc->query_dirty_bitmap = iommufd_query_dirty_bitmap; |
| 963 | }; |
| 964 | |
| 965 | static bool |
| 966 | host_iommu_device_iommufd_vfio_attach_hwpt(HostIOMMUDeviceIOMMUFD *hiodi, |
| 967 | uint32_t pasid, uint32_t hwpt_id, |
| 968 | Error **errp) |
| 969 | { |
| 970 | VFIODevice *vbasedev = HOST_IOMMU_DEVICE(hiodi)->agent; |
| 971 | |
| 972 | return !iommufd_cdev_pasid_attach_ioas_hwpt(vbasedev, pasid, hwpt_id, errp); |
| 973 | } |
| 974 | |
| 975 | static bool |
| 976 | host_iommu_device_iommufd_vfio_detach_hwpt(HostIOMMUDeviceIOMMUFD *hiodi, |
| 977 | uint32_t pasid, Error **errp) |
| 978 | { |
| 979 | VFIODevice *vbasedev = HOST_IOMMU_DEVICE(hiodi)->agent; |
| 980 | |
| 981 | return iommufd_cdev_pasid_detach_ioas_hwpt(vbasedev, pasid, errp); |
| 982 | } |
| 983 | |
| 984 | static bool hiod_iommufd_vfio_realize(HostIOMMUDevice *hiod, void *opaque, |
| 985 | Error **errp) |
| 986 | { |
| 987 | VFIODevice *vdev = opaque; |
| 988 | HostIOMMUDeviceIOMMUFD *hiodi; |
| 989 | HostIOMMUDeviceCaps *caps = &hiod->caps; |
| 990 | VendorCaps *vendor_caps = &caps->vendor_caps; |
| 991 | uint32_t type = IOMMU_HW_INFO_TYPE_DEFAULT; |
| 992 | uint8_t max_pasid_log2; |
| 993 | uint64_t hw_caps; |
| 994 | |
| 995 | hiod->agent = opaque; |
| 996 | |
| 997 | if (!iommufd_backend_get_device_info(vdev->iommufd, vdev->devid, &type, |
| 998 | vendor_caps, sizeof(*vendor_caps), |
| 999 | &hw_caps, &max_pasid_log2, errp)) { |
| 1000 | return false; |
| 1001 | } |
| 1002 | |
| 1003 | hiod->name = g_strdup(vdev->name); |
| 1004 | caps->type = type; |
| 1005 | caps->hw_caps = hw_caps; |
| 1006 | caps->max_pasid_log2 = max_pasid_log2; |
| 1007 | |
| 1008 | hiodi = HOST_IOMMU_DEVICE_IOMMUFD(hiod); |
| 1009 | hiodi->iommufd = vdev->iommufd; |
| 1010 | hiodi->devid = vdev->devid; |
| 1011 | hiodi->hwpt_id = vdev->hwpt->hwpt_id; |
| 1012 | |
| 1013 | return true; |
| 1014 | } |
| 1015 | |
| 1016 | static GList * |
| 1017 | hiod_iommufd_vfio_get_iova_ranges(HostIOMMUDevice *hiod) |
| 1018 | { |
| 1019 | VFIODevice *vdev = hiod->agent; |
| 1020 | |
| 1021 | g_assert(vdev); |
| 1022 | return vfio_container_get_iova_ranges(vdev->bcontainer); |
| 1023 | } |
| 1024 | |
| 1025 | static uint64_t |
| 1026 | hiod_iommufd_vfio_get_page_size_mask(HostIOMMUDevice *hiod) |
| 1027 | { |
| 1028 | VFIODevice *vdev = hiod->agent; |
| 1029 | |
| 1030 | g_assert(vdev); |
| 1031 | return vfio_container_get_page_size_mask(vdev->bcontainer); |
| 1032 | } |
| 1033 | |
| 1034 | |
| 1035 | static void hiod_iommufd_vfio_class_init(ObjectClass *oc, const void *data) |
| 1036 | { |
| 1037 | HostIOMMUDeviceClass *hiodc = HOST_IOMMU_DEVICE_CLASS(oc); |
| 1038 | HostIOMMUDeviceIOMMUFDClass *hiodic = HOST_IOMMU_DEVICE_IOMMUFD_CLASS(oc); |
| 1039 | |
| 1040 | hiodc->realize = hiod_iommufd_vfio_realize; |
| 1041 | hiodc->get_iova_ranges = hiod_iommufd_vfio_get_iova_ranges; |
| 1042 | hiodc->get_page_size_mask = hiod_iommufd_vfio_get_page_size_mask; |
| 1043 | |
| 1044 | hiodic->attach_hwpt = host_iommu_device_iommufd_vfio_attach_hwpt; |
| 1045 | hiodic->detach_hwpt = host_iommu_device_iommufd_vfio_detach_hwpt; |
| 1046 | }; |
| 1047 | |
| 1048 | static const TypeInfo types[] = { |
| 1049 | { |
| 1050 | .name = TYPE_VFIO_IOMMU_IOMMUFD, |
| 1051 | .parent = TYPE_VFIO_IOMMU, |
| 1052 | .instance_size = sizeof(VFIOIOMMUFDContainer), |
| 1053 | .class_init = vfio_iommu_iommufd_class_init, |
| 1054 | }, { |
| 1055 | .name = TYPE_HOST_IOMMU_DEVICE_IOMMUFD_VFIO, |
| 1056 | .parent = TYPE_HOST_IOMMU_DEVICE_IOMMUFD, |
| 1057 | .class_init = hiod_iommufd_vfio_class_init, |
| 1058 | } |
| 1059 | }; |
| 1060 | |
| 1061 | DEFINE_TYPES(types) |