drivers/vdpa/vdpa_sim/vdpa_sim.c

   1 // SPDX-License-Identifier: GPL-2.0-only
   2 /*
   3  * VDPA device simulator core.
   4  *
   5  * Copyright (c) 2020, Red Hat Inc. All rights reserved.
   6  *     Author: Jason Wang <jasowang@redhat.com>
   7  *
   8  */
   9
  10 #include <linux/init.h>
  11 #include <linux/module.h>
  12 #include <linux/device.h>
  13 #include <linux/kernel.h>
  14 #include <linux/slab.h>
  15 #include <linux/sched.h>
  16 #include <linux/dma-map-ops.h>
  17 #include <linux/vringh.h>
  18 #include <linux/vdpa.h>
  19 #include <linux/vhost_iotlb.h>
  20 #include <linux/iova.h>
  21
  22 #include "vdpa_sim.h"
  23
  24 #define DRV_VERSION  "0.1"
  25 #define DRV_AUTHOR   "Jason Wang <jasowang@redhat.com>"
  26 #define DRV_DESC     "vDPA Device Simulator core"
  27 #define DRV_LICENSE  "GPL v2"
  28
  29 static int batch_mapping = 1;
  30 module_param(batch_mapping, int, 0444);
  31 MODULE_PARM_DESC(batch_mapping, "Batched mapping 1 -Enable; 0 - Disable");
  32
  33 static int max_iotlb_entries = 2048;
  34 module_param(max_iotlb_entries, int, 0444);
  35 MODULE_PARM_DESC(max_iotlb_entries,
  36                  "Maximum number of iotlb entries. 0 means unlimited. (default: 2048)");
  37
  38 #define VDPASIM_QUEUE_ALIGN PAGE_SIZE
  39 #define VDPASIM_QUEUE_MAX 256
  40 #define VDPASIM_VENDOR_ID 0
  41
  42 static struct vdpasim *vdpa_to_sim(struct vdpa_device *vdpa)
  43 {
  44         return container_of(vdpa, struct vdpasim, vdpa);
  45 }
  46
  47 static struct vdpasim *dev_to_sim(struct device *dev)
  48 {
  49         struct vdpa_device *vdpa = dev_to_vdpa(dev);
  50
  51         return vdpa_to_sim(vdpa);
  52 }
  53
  54 static void vdpasim_vq_notify(struct vringh *vring)
  55 {
  56         struct vdpasim_virtqueue *vq =
  57                 container_of(vring, struct vdpasim_virtqueue, vring);
  58
  59         if (!vq->cb)
  60                 return;
  61
  62         vq->cb(vq->private);
  63 }
  64
  65 static void vdpasim_queue_ready(struct vdpasim *vdpasim, unsigned int idx)
  66 {
  67         struct vdpasim_virtqueue *vq = &vdpasim->vqs[idx];
  68
  69         vringh_init_iotlb(&vq->vring, vdpasim->dev_attr.supported_features,
  70                           VDPASIM_QUEUE_MAX, false,
  71                           (struct vring_desc *)(uintptr_t)vq->desc_addr,
  72                           (struct vring_avail *)
  73                           (uintptr_t)vq->driver_addr,
  74                           (struct vring_used *)
  75                           (uintptr_t)vq->device_addr);
  76
  77         vq->vring.notify = vdpasim_vq_notify;
  78 }
  79
  80 static void vdpasim_vq_reset(struct vdpasim *vdpasim,
  81                              struct vdpasim_virtqueue *vq)
  82 {
  83         vq->ready = false;
  84         vq->desc_addr = 0;
  85         vq->driver_addr = 0;
  86         vq->device_addr = 0;
  87         vq->cb = NULL;
  88         vq->private = NULL;
  89         vringh_init_iotlb(&vq->vring, vdpasim->dev_attr.supported_features,
  90                           VDPASIM_QUEUE_MAX, false, NULL, NULL, NULL);
  91
  92         vq->vring.notify = NULL;
  93 }
  94
  95 static void vdpasim_reset(struct vdpasim *vdpasim)
  96 {
  97         int i;
  98
  99         for (i = 0; i < vdpasim->dev_attr.nvqs; i++)
 100                 vdpasim_vq_reset(vdpasim, &vdpasim->vqs[i]);
 101
 102         spin_lock(&vdpasim->iommu_lock);
 103         vhost_iotlb_reset(vdpasim->iommu);
 104         spin_unlock(&vdpasim->iommu_lock);
 105
 106         vdpasim->features = 0;
 107         vdpasim->status = 0;
 108         ++vdpasim->generation;
 109 }
 110
 111 static int dir_to_perm(enum dma_data_direction dir)
 112 {
 113         int perm = -EFAULT;
 114
 115         switch (dir) {
 116         case DMA_FROM_DEVICE:
 117                 perm = VHOST_MAP_WO;
 118                 break;
 119         case DMA_TO_DEVICE:
 120                 perm = VHOST_MAP_RO;
 121                 break;
 122         case DMA_BIDIRECTIONAL:
 123                 perm = VHOST_MAP_RW;
 124                 break;
 125         default:
 126                 break;
 127         }
 128
 129         return perm;
 130 }
 131
 132 static dma_addr_t vdpasim_map_range(struct vdpasim *vdpasim, phys_addr_t paddr,
 133                                     size_t size, unsigned int perm)
 134 {
 135         struct iova *iova;
 136         dma_addr_t dma_addr;
 137         int ret;
 138
 139         /* We set the limit_pfn to the maximum (ULONG_MAX - 1) */
 140         iova = alloc_iova(&vdpasim->iova, size, ULONG_MAX - 1, true);
 141         if (!iova)
 142                 return DMA_MAPPING_ERROR;
 143
 144         dma_addr = iova_dma_addr(&vdpasim->iova, iova);
 145
 146         spin_lock(&vdpasim->iommu_lock);
 147         ret = vhost_iotlb_add_range(vdpasim->iommu, (u64)dma_addr,
 148                                     (u64)dma_addr + size - 1, (u64)paddr, perm);
 149         spin_unlock(&vdpasim->iommu_lock);
 150
 151         if (ret) {
 152                 __free_iova(&vdpasim->iova, iova);
 153                 return DMA_MAPPING_ERROR;
 154         }
 155
 156         return dma_addr;
 157 }
 158
 159 static void vdpasim_unmap_range(struct vdpasim *vdpasim, dma_addr_t dma_addr,
 160                                 size_t size)
 161 {
 162         spin_lock(&vdpasim->iommu_lock);
 163         vhost_iotlb_del_range(vdpasim->iommu, (u64)dma_addr,
 164                               (u64)dma_addr + size - 1);
 165         spin_unlock(&vdpasim->iommu_lock);
 166
 167         free_iova(&vdpasim->iova, iova_pfn(&vdpasim->iova, dma_addr));
 168 }
 169
 170 static dma_addr_t vdpasim_map_page(struct device *dev, struct page *page,
 171                                    unsigned long offset, size_t size,
 172                                    enum dma_data_direction dir,
 173                                    unsigned long attrs)
 174 {
 175         struct vdpasim *vdpasim = dev_to_sim(dev);
 176         phys_addr_t paddr = page_to_phys(page) + offset;
 177         int perm = dir_to_perm(dir);
 178
 179         if (perm < 0)
 180                 return DMA_MAPPING_ERROR;
 181
 182         return vdpasim_map_range(vdpasim, paddr, size, perm);
 183 }
 184
 185 static void vdpasim_unmap_page(struct device *dev, dma_addr_t dma_addr,
 186                                size_t size, enum dma_data_direction dir,
 187                                unsigned long attrs)
 188 {
 189         struct vdpasim *vdpasim = dev_to_sim(dev);
 190
 191         vdpasim_unmap_range(vdpasim, dma_addr, size);
 192 }
 193
 194 static void *vdpasim_alloc_coherent(struct device *dev, size_t size,
 195                                     dma_addr_t *dma_addr, gfp_t flag,
 196                                     unsigned long attrs)
 197 {
 198         struct vdpasim *vdpasim = dev_to_sim(dev);
 199         phys_addr_t paddr;
 200         void *addr;
 201
 202         addr = kmalloc(size, flag);
 203         if (!addr) {
 204                 *dma_addr = DMA_MAPPING_ERROR;
 205                 return NULL;
 206         }
 207
 208         paddr = virt_to_phys(addr);
 209
 210         *dma_addr = vdpasim_map_range(vdpasim, paddr, size, VHOST_MAP_RW);
 211         if (*dma_addr == DMA_MAPPING_ERROR) {
 212                 kfree(addr);
 213                 return NULL;
 214         }
 215
 216         return addr;
 217 }
 218
 219 static void vdpasim_free_coherent(struct device *dev, size_t size,
 220                                   void *vaddr, dma_addr_t dma_addr,
 221                                   unsigned long attrs)
 222 {
 223         struct vdpasim *vdpasim = dev_to_sim(dev);
 224
 225         vdpasim_unmap_range(vdpasim, dma_addr, size);
 226
 227         kfree(vaddr);
 228 }
 229
 230 static const struct dma_map_ops vdpasim_dma_ops = {
 231         .map_page = vdpasim_map_page,
 232         .unmap_page = vdpasim_unmap_page,
 233         .alloc = vdpasim_alloc_coherent,
 234         .free = vdpasim_free_coherent,
 235 };
 236
 237 static const struct vdpa_config_ops vdpasim_config_ops;
 238 static const struct vdpa_config_ops vdpasim_batch_config_ops;
 239
 240 struct vdpasim *vdpasim_create(struct vdpasim_dev_attr *dev_attr)
 241 {
 242         const struct vdpa_config_ops *ops;
 243         struct vdpasim *vdpasim;
 244         struct device *dev;
 245         int i, ret = -ENOMEM;
 246
 247         if (batch_mapping)
 248                 ops = &vdpasim_batch_config_ops;
 249         else
 250                 ops = &vdpasim_config_ops;
 251
 252         vdpasim = vdpa_alloc_device(struct vdpasim, vdpa, NULL, ops,
 253                                     dev_attr->name);
 254         if (IS_ERR(vdpasim)) {
 255                 ret = PTR_ERR(vdpasim);
 256                 goto err_alloc;
 257         }
 258
 259         vdpasim->dev_attr = *dev_attr;
 260         INIT_WORK(&vdpasim->work, dev_attr->work_fn);
 261         spin_lock_init(&vdpasim->lock);
 262         spin_lock_init(&vdpasim->iommu_lock);
 263
 264         dev = &vdpasim->vdpa.dev;
 265         dev->dma_mask = &dev->coherent_dma_mask;
 266         if (dma_set_mask_and_coherent(dev, DMA_BIT_MASK(64)))
 267                 goto err_iommu;
 268         set_dma_ops(dev, &vdpasim_dma_ops);
 269         vdpasim->vdpa.mdev = dev_attr->mgmt_dev;
 270
 271         vdpasim->config = kzalloc(dev_attr->config_size, GFP_KERNEL);
 272         if (!vdpasim->config)
 273                 goto err_iommu;
 274
 275         vdpasim->vqs = kcalloc(dev_attr->nvqs, sizeof(struct vdpasim_virtqueue),
 276                                GFP_KERNEL);
 277         if (!vdpasim->vqs)
 278                 goto err_iommu;
 279
 280         vdpasim->iommu = vhost_iotlb_alloc(max_iotlb_entries, 0);
 281         if (!vdpasim->iommu)
 282                 goto err_iommu;
 283
 284         vdpasim->buffer = kvmalloc(dev_attr->buffer_size, GFP_KERNEL);
 285         if (!vdpasim->buffer)
 286                 goto err_iommu;
 287
 288         for (i = 0; i < dev_attr->nvqs; i++)
 289                 vringh_set_iotlb(&vdpasim->vqs[i].vring, vdpasim->iommu,
 290                                  &vdpasim->iommu_lock);
 291
 292         ret = iova_cache_get();
 293         if (ret)
 294                 goto err_iommu;
 295
 296         /* For simplicity we use an IOVA allocator with byte granularity */
 297         init_iova_domain(&vdpasim->iova, 1, 0);
 298
 299         vdpasim->vdpa.dma_dev = dev;
 300
 301         return vdpasim;
 302
 303 err_iommu:
 304         put_device(dev);
 305 err_alloc:
 306         return ERR_PTR(ret);
 307 }
 308 EXPORT_SYMBOL_GPL(vdpasim_create);
 309
 310 static int vdpasim_set_vq_address(struct vdpa_device *vdpa, u16 idx,
 311                                   u64 desc_area, u64 driver_area,
 312                                   u64 device_area)
 313 {
 314         struct vdpasim *vdpasim = vdpa_to_sim(vdpa);
 315         struct vdpasim_virtqueue *vq = &vdpasim->vqs[idx];
 316
 317         vq->desc_addr = desc_area;
 318         vq->driver_addr = driver_area;
 319         vq->device_addr = device_area;
 320
 321         return 0;
 322 }
 323
 324 static void vdpasim_set_vq_num(struct vdpa_device *vdpa, u16 idx, u32 num)
 325 {
 326         struct vdpasim *vdpasim = vdpa_to_sim(vdpa);
 327         struct vdpasim_virtqueue *vq = &vdpasim->vqs[idx];
 328
 329         vq->num = num;
 330 }
 331
 332 static void vdpasim_kick_vq(struct vdpa_device *vdpa, u16 idx)
 333 {
 334         struct vdpasim *vdpasim = vdpa_to_sim(vdpa);
 335         struct vdpasim_virtqueue *vq = &vdpasim->vqs[idx];
 336
 337         if (vq->ready)
 338                 schedule_work(&vdpasim->work);
 339 }
 340
 341 static void vdpasim_set_vq_cb(struct vdpa_device *vdpa, u16 idx,
 342                               struct vdpa_callback *cb)
 343 {
 344         struct vdpasim *vdpasim = vdpa_to_sim(vdpa);
 345         struct vdpasim_virtqueue *vq = &vdpasim->vqs[idx];
 346
 347         vq->cb = cb->callback;
 348         vq->private = cb->private;
 349 }
 350
 351 static void vdpasim_set_vq_ready(struct vdpa_device *vdpa, u16 idx, bool ready)
 352 {
 353         struct vdpasim *vdpasim = vdpa_to_sim(vdpa);
 354         struct vdpasim_virtqueue *vq = &vdpasim->vqs[idx];
 355
 356         spin_lock(&vdpasim->lock);
 357         vq->ready = ready;
 358         if (vq->ready)
 359                 vdpasim_queue_ready(vdpasim, idx);
 360         spin_unlock(&vdpasim->lock);
 361 }
 362
 363 static bool vdpasim_get_vq_ready(struct vdpa_device *vdpa, u16 idx)
 364 {
 365         struct vdpasim *vdpasim = vdpa_to_sim(vdpa);
 366         struct vdpasim_virtqueue *vq = &vdpasim->vqs[idx];
 367
 368         return vq->ready;
 369 }
 370
 371 static int vdpasim_set_vq_state(struct vdpa_device *vdpa, u16 idx,
 372                                 const struct vdpa_vq_state *state)
 373 {
 374         struct vdpasim *vdpasim = vdpa_to_sim(vdpa);
 375         struct vdpasim_virtqueue *vq = &vdpasim->vqs[idx];
 376         struct vringh *vrh = &vq->vring;
 377
 378         spin_lock(&vdpasim->lock);
 379         vrh->last_avail_idx = state->split.avail_index;
 380         spin_unlock(&vdpasim->lock);
 381
 382         return 0;
 383 }
 384
 385 static int vdpasim_get_vq_state(struct vdpa_device *vdpa, u16 idx,
 386                                 struct vdpa_vq_state *state)
 387 {
 388         struct vdpasim *vdpasim = vdpa_to_sim(vdpa);
 389         struct vdpasim_virtqueue *vq = &vdpasim->vqs[idx];
 390         struct vringh *vrh = &vq->vring;
 391
 392         state->split.avail_index = vrh->last_avail_idx;
 393         return 0;
 394 }
 395
 396 static u32 vdpasim_get_vq_align(struct vdpa_device *vdpa)
 397 {
 398         return VDPASIM_QUEUE_ALIGN;
 399 }
 400
 401 static u64 vdpasim_get_features(struct vdpa_device *vdpa)
 402 {
 403         struct vdpasim *vdpasim = vdpa_to_sim(vdpa);
 404
 405         return vdpasim->dev_attr.supported_features;
 406 }
 407
 408 static int vdpasim_set_features(struct vdpa_device *vdpa, u64 features)
 409 {
 410         struct vdpasim *vdpasim = vdpa_to_sim(vdpa);
 411
 412         /* DMA mapping must be done by driver */
 413         if (!(features & (1ULL << VIRTIO_F_ACCESS_PLATFORM)))
 414                 return -EINVAL;
 415
 416         vdpasim->features = features & vdpasim->dev_attr.supported_features;
 417
 418         return 0;
 419 }
 420
 421 static void vdpasim_set_config_cb(struct vdpa_device *vdpa,
 422                                   struct vdpa_callback *cb)
 423 {
 424         /* We don't support config interrupt */
 425 }
 426
 427 static u16 vdpasim_get_vq_num_max(struct vdpa_device *vdpa)
 428 {
 429         return VDPASIM_QUEUE_MAX;
 430 }
 431
 432 static u32 vdpasim_get_device_id(struct vdpa_device *vdpa)
 433 {
 434         struct vdpasim *vdpasim = vdpa_to_sim(vdpa);
 435
 436         return vdpasim->dev_attr.id;
 437 }
 438
 439 static u32 vdpasim_get_vendor_id(struct vdpa_device *vdpa)
 440 {
 441         return VDPASIM_VENDOR_ID;
 442 }
 443
 444 static u8 vdpasim_get_status(struct vdpa_device *vdpa)
 445 {
 446         struct vdpasim *vdpasim = vdpa_to_sim(vdpa);
 447         u8 status;
 448
 449         spin_lock(&vdpasim->lock);
 450         status = vdpasim->status;
 451         spin_unlock(&vdpasim->lock);
 452
 453         return status;
 454 }
 455
 456 static void vdpasim_set_status(struct vdpa_device *vdpa, u8 status)
 457 {
 458         struct vdpasim *vdpasim = vdpa_to_sim(vdpa);
 459
 460         spin_lock(&vdpasim->lock);
 461         vdpasim->status = status;
 462         if (status == 0)
 463                 vdpasim_reset(vdpasim);
 464         spin_unlock(&vdpasim->lock);
 465 }
 466
 467 static size_t vdpasim_get_config_size(struct vdpa_device *vdpa)
 468 {
 469         struct vdpasim *vdpasim = vdpa_to_sim(vdpa);
 470
 471         return vdpasim->dev_attr.config_size;
 472 }
 473
 474 static void vdpasim_get_config(struct vdpa_device *vdpa, unsigned int offset,
 475                              void *buf, unsigned int len)
 476 {
 477         struct vdpasim *vdpasim = vdpa_to_sim(vdpa);
 478
 479         if (offset + len > vdpasim->dev_attr.config_size)
 480                 return;
 481
 482         if (vdpasim->dev_attr.get_config)
 483                 vdpasim->dev_attr.get_config(vdpasim, vdpasim->config);
 484
 485         memcpy(buf, vdpasim->config + offset, len);
 486 }
 487
 488 static void vdpasim_set_config(struct vdpa_device *vdpa, unsigned int offset,
 489                              const void *buf, unsigned int len)
 490 {
 491         struct vdpasim *vdpasim = vdpa_to_sim(vdpa);
 492
 493         if (offset + len > vdpasim->dev_attr.config_size)
 494                 return;
 495
 496         memcpy(vdpasim->config + offset, buf, len);
 497
 498         if (vdpasim->dev_attr.set_config)
 499                 vdpasim->dev_attr.set_config(vdpasim, vdpasim->config);
 500 }
 501
 502 static u32 vdpasim_get_generation(struct vdpa_device *vdpa)
 503 {
 504         struct vdpasim *vdpasim = vdpa_to_sim(vdpa);
 505
 506         return vdpasim->generation;
 507 }
 508
 509 static struct vdpa_iova_range vdpasim_get_iova_range(struct vdpa_device *vdpa)
 510 {
 511         struct vdpa_iova_range range = {
 512                 .first = 0ULL,
 513                 .last = ULLONG_MAX,
 514         };
 515
 516         return range;
 517 }
 518
 519 static int vdpasim_set_map(struct vdpa_device *vdpa,
 520                            struct vhost_iotlb *iotlb)
 521 {
 522         struct vdpasim *vdpasim = vdpa_to_sim(vdpa);
 523         struct vhost_iotlb_map *map;
 524         u64 start = 0ULL, last = 0ULL - 1;
 525         int ret;
 526
 527         spin_lock(&vdpasim->iommu_lock);
 528         vhost_iotlb_reset(vdpasim->iommu);
 529
 530         for (map = vhost_iotlb_itree_first(iotlb, start, last); map;
 531              map = vhost_iotlb_itree_next(map, start, last)) {
 532                 ret = vhost_iotlb_add_range(vdpasim->iommu, map->start,
 533                                             map->last, map->addr, map->perm);
 534                 if (ret)
 535                         goto err;
 536         }
 537         spin_unlock(&vdpasim->iommu_lock);
 538         return 0;
 539
 540 err:
 541         vhost_iotlb_reset(vdpasim->iommu);
 542         spin_unlock(&vdpasim->iommu_lock);
 543         return ret;
 544 }
 545
 546 static int vdpasim_dma_map(struct vdpa_device *vdpa, u64 iova, u64 size,
 547                            u64 pa, u32 perm)
 548 {
 549         struct vdpasim *vdpasim = vdpa_to_sim(vdpa);
 550         int ret;
 551
 552         spin_lock(&vdpasim->iommu_lock);
 553         ret = vhost_iotlb_add_range(vdpasim->iommu, iova, iova + size - 1, pa,
 554                                     perm);
 555         spin_unlock(&vdpasim->iommu_lock);
 556
 557         return ret;
 558 }
 559
 560 static int vdpasim_dma_unmap(struct vdpa_device *vdpa, u64 iova, u64 size)
 561 {
 562         struct vdpasim *vdpasim = vdpa_to_sim(vdpa);
 563
 564         spin_lock(&vdpasim->iommu_lock);
 565         vhost_iotlb_del_range(vdpasim->iommu, iova, iova + size - 1);
 566         spin_unlock(&vdpasim->iommu_lock);
 567
 568         return 0;
 569 }
 570
 571 static void vdpasim_free(struct vdpa_device *vdpa)
 572 {
 573         struct vdpasim *vdpasim = vdpa_to_sim(vdpa);
 574         int i;
 575
 576         cancel_work_sync(&vdpasim->work);
 577
 578         for (i = 0; i < vdpasim->dev_attr.nvqs; i++) {
 579                 vringh_kiov_cleanup(&vdpasim->vqs[i].out_iov);
 580                 vringh_kiov_cleanup(&vdpasim->vqs[i].in_iov);
 581         }
 582
 583         put_iova_domain(&vdpasim->iova);
 584         iova_cache_put();
 585         kvfree(vdpasim->buffer);
 586         if (vdpasim->iommu)
 587                 vhost_iotlb_free(vdpasim->iommu);
 588         kfree(vdpasim->vqs);
 589         kfree(vdpasim->config);
 590 }
 591
 592 static const struct vdpa_config_ops vdpasim_config_ops = {
 593         .set_vq_address         = vdpasim_set_vq_address,
 594         .set_vq_num             = vdpasim_set_vq_num,
 595         .kick_vq                = vdpasim_kick_vq,
 596         .set_vq_cb              = vdpasim_set_vq_cb,
 597         .set_vq_ready           = vdpasim_set_vq_ready,
 598         .get_vq_ready           = vdpasim_get_vq_ready,
 599         .set_vq_state           = vdpasim_set_vq_state,
 600         .get_vq_state           = vdpasim_get_vq_state,
 601         .get_vq_align           = vdpasim_get_vq_align,
 602         .get_features           = vdpasim_get_features,
 603         .set_features           = vdpasim_set_features,
 604         .set_config_cb          = vdpasim_set_config_cb,
 605         .get_vq_num_max         = vdpasim_get_vq_num_max,
 606         .get_device_id          = vdpasim_get_device_id,
 607         .get_vendor_id          = vdpasim_get_vendor_id,
 608         .get_status             = vdpasim_get_status,
 609         .set_status             = vdpasim_set_status,
 610         .get_config_size        = vdpasim_get_config_size,
 611         .get_config             = vdpasim_get_config,
 612         .set_config             = vdpasim_set_config,
 613         .get_generation         = vdpasim_get_generation,
 614         .get_iova_range         = vdpasim_get_iova_range,
 615         .dma_map                = vdpasim_dma_map,
 616         .dma_unmap              = vdpasim_dma_unmap,
 617         .free                   = vdpasim_free,
 618 };
 619
 620 static const struct vdpa_config_ops vdpasim_batch_config_ops = {
 621         .set_vq_address         = vdpasim_set_vq_address,
 622         .set_vq_num             = vdpasim_set_vq_num,
 623         .kick_vq                = vdpasim_kick_vq,
 624         .set_vq_cb              = vdpasim_set_vq_cb,
 625         .set_vq_ready           = vdpasim_set_vq_ready,
 626         .get_vq_ready           = vdpasim_get_vq_ready,
 627         .set_vq_state           = vdpasim_set_vq_state,
 628         .get_vq_state           = vdpasim_get_vq_state,
 629         .get_vq_align           = vdpasim_get_vq_align,
 630         .get_features           = vdpasim_get_features,
 631         .set_features           = vdpasim_set_features,
 632         .set_config_cb          = vdpasim_set_config_cb,
 633         .get_vq_num_max         = vdpasim_get_vq_num_max,
 634         .get_device_id          = vdpasim_get_device_id,
 635         .get_vendor_id          = vdpasim_get_vendor_id,
 636         .get_status             = vdpasim_get_status,
 637         .set_status             = vdpasim_set_status,
 638         .get_config_size        = vdpasim_get_config_size,
 639         .get_config             = vdpasim_get_config,
 640         .set_config             = vdpasim_set_config,
 641         .get_generation         = vdpasim_get_generation,
 642         .get_iova_range         = vdpasim_get_iova_range,
 643         .set_map                = vdpasim_set_map,
 644         .free                   = vdpasim_free,
 645 };
 646
 647 MODULE_VERSION(DRV_VERSION);
 648 MODULE_LICENSE(DRV_LICENSE);
 649 MODULE_AUTHOR(DRV_AUTHOR);
 650 MODULE_DESCRIPTION(DRV_DESC);