drivers/gpu/drm/virtio/virtgpu_drv.h

   1 /*
   2  * Copyright (C) 2015 Red Hat, Inc.
   3  * All Rights Reserved.
   4  *
   5  * Permission is hereby granted, free of charge, to any person obtaining
   6  * a copy of this software and associated documentation files (the
   7  * "Software"), to deal in the Software without restriction, including
   8  * without limitation the rights to use, copy, modify, merge, publish,
   9  * distribute, sublicense, and/or sell copies of the Software, and to
  10  * permit persons to whom the Software is furnished to do so, subject to
  11  * the following conditions:
  12  *
  13  * The above copyright notice and this permission notice (including the
  14  * next paragraph) shall be included in all copies or substantial
  15  * portions of the Software.
  16  *
  17  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
  18  * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
  19  * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
  20  * IN NO EVENT SHALL THE COPYRIGHT OWNER(S) AND/OR ITS SUPPLIERS BE
  21  * LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
  22  * OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
  23  * WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
  24  */
  25
  26 #ifndef VIRTIO_DRV_H
  27 #define VIRTIO_DRV_H
  28
  29 #include <linux/virtio.h>
  30 #include <linux/virtio_ids.h>
  31 #include <linux/virtio_config.h>
  32 #include <linux/virtio_gpu.h>
  33
  34 #include <drm/drm_atomic.h>
  35 #include <drm/drm_drv.h>
  36 #include <drm/drm_encoder.h>
  37 #include <drm/drm_fb_helper.h>
  38 #include <drm/drm_fourcc.h>
  39 #include <drm/drm_gem.h>
  40 #include <drm/drm_gem_shmem_helper.h>
  41 #include <drm/drm_ioctl.h>
  42 #include <drm/drm_probe_helper.h>
  43 #include <drm/virtgpu_drm.h>
  44
  45 #define DRIVER_NAME "virtio_gpu"
  46 #define DRIVER_DESC "virtio GPU"
  47 #define DRIVER_DATE "0"
  48
  49 #define DRIVER_MAJOR 0
  50 #define DRIVER_MINOR 1
  51 #define DRIVER_PATCHLEVEL 0
  52
  53 #define STATE_INITIALIZING 0
  54 #define STATE_OK 1
  55 #define STATE_ERR 2
  56
  57 struct virtio_gpu_object_params {
  58         unsigned long size;
  59         bool dumb;
  60         /* 3d */
  61         bool virgl;
  62         bool blob;
  63
  64         /* classic resources only */
  65         uint32_t format;
  66         uint32_t width;
  67         uint32_t height;
  68         uint32_t target;
  69         uint32_t bind;
  70         uint32_t depth;
  71         uint32_t array_size;
  72         uint32_t last_level;
  73         uint32_t nr_samples;
  74         uint32_t flags;
  75
  76         /* blob resources only */
  77         uint32_t ctx_id;
  78         uint32_t blob_mem;
  79         uint32_t blob_flags;
  80         uint64_t blob_id;
  81 };
  82
  83 struct virtio_gpu_object {
  84         struct drm_gem_shmem_object base;
  85         uint32_t hw_res_handle;
  86         bool dumb;
  87         bool created;
  88         bool host3d_blob, guest_blob;
  89         uint32_t blob_mem, blob_flags;
  90
  91         int uuid_state;
  92         uuid_t uuid;
  93 };
  94 #define gem_to_virtio_gpu_obj(gobj) \
  95         container_of((gobj), struct virtio_gpu_object, base.base)
  96
  97 struct virtio_gpu_object_shmem {
  98         struct virtio_gpu_object base;
  99         struct sg_table *pages;
 100         uint32_t mapped;
 101 };
 102
 103 struct virtio_gpu_object_vram {
 104         struct virtio_gpu_object base;
 105         uint32_t map_state;
 106         uint32_t map_info;
 107         struct drm_mm_node vram_node;
 108 };
 109
 110 #define to_virtio_gpu_shmem(virtio_gpu_object) \
 111         container_of((virtio_gpu_object), struct virtio_gpu_object_shmem, base)
 112
 113 #define to_virtio_gpu_vram(virtio_gpu_object) \
 114         container_of((virtio_gpu_object), struct virtio_gpu_object_vram, base)
 115
 116 struct virtio_gpu_object_array {
 117         struct ww_acquire_ctx ticket;
 118         struct list_head next;
 119         u32 nents, total;
 120         struct drm_gem_object *objs[];
 121 };
 122
 123 struct virtio_gpu_vbuffer;
 124 struct virtio_gpu_device;
 125
 126 typedef void (*virtio_gpu_resp_cb)(struct virtio_gpu_device *vgdev,
 127                                    struct virtio_gpu_vbuffer *vbuf);
 128
 129 struct virtio_gpu_fence_driver {
 130         atomic64_t       last_fence_id;
 131         uint64_t         current_fence_id;
 132         uint64_t         context;
 133         struct list_head fences;
 134         spinlock_t       lock;
 135 };
 136
 137 struct virtio_gpu_fence {
 138         struct dma_fence f;
 139         struct virtio_gpu_fence_driver *drv;
 140         struct list_head node;
 141 };
 142
 143 struct virtio_gpu_vbuffer {
 144         char *buf;
 145         int size;
 146
 147         void *data_buf;
 148         uint32_t data_size;
 149
 150         char *resp_buf;
 151         int resp_size;
 152         virtio_gpu_resp_cb resp_cb;
 153         void *resp_cb_data;
 154
 155         struct virtio_gpu_object_array *objs;
 156         struct list_head list;
 157 };
 158
 159 struct virtio_gpu_output {
 160         int index;
 161         struct drm_crtc crtc;
 162         struct drm_connector conn;
 163         struct drm_encoder enc;
 164         struct virtio_gpu_display_one info;
 165         struct virtio_gpu_update_cursor cursor;
 166         struct edid *edid;
 167         int cur_x;
 168         int cur_y;
 169         bool needs_modeset;
 170 };
 171 #define drm_crtc_to_virtio_gpu_output(x) \
 172         container_of(x, struct virtio_gpu_output, crtc)
 173
 174 struct virtio_gpu_framebuffer {
 175         struct drm_framebuffer base;
 176         struct virtio_gpu_fence *fence;
 177 };
 178 #define to_virtio_gpu_framebuffer(x) \
 179         container_of(x, struct virtio_gpu_framebuffer, base)
 180
 181 struct virtio_gpu_queue {
 182         struct virtqueue *vq;
 183         spinlock_t qlock;
 184         wait_queue_head_t ack_queue;
 185         struct work_struct dequeue_work;
 186 };
 187
 188 struct virtio_gpu_drv_capset {
 189         uint32_t id;
 190         uint32_t max_version;
 191         uint32_t max_size;
 192 };
 193
 194 struct virtio_gpu_drv_cap_cache {
 195         struct list_head head;
 196         void *caps_cache;
 197         uint32_t id;
 198         uint32_t version;
 199         uint32_t size;
 200         atomic_t is_valid;
 201 };
 202
 203 struct virtio_gpu_device {
 204         struct device *dev;
 205         struct drm_device *ddev;
 206
 207         struct virtio_device *vdev;
 208
 209         struct virtio_gpu_output outputs[VIRTIO_GPU_MAX_SCANOUTS];
 210         uint32_t num_scanouts;
 211
 212         struct virtio_gpu_queue ctrlq;
 213         struct virtio_gpu_queue cursorq;
 214         struct kmem_cache *vbufs;
 215
 216         atomic_t pending_commands;
 217
 218         struct ida      resource_ida;
 219
 220         wait_queue_head_t resp_wq;
 221         /* current display info */
 222         spinlock_t display_info_lock;
 223         bool display_info_pending;
 224
 225         struct virtio_gpu_fence_driver fence_drv;
 226
 227         struct ida      ctx_id_ida;
 228
 229         bool has_virgl_3d;
 230         bool has_edid;
 231         bool has_indirect;
 232         bool has_resource_assign_uuid;
 233         bool has_resource_blob;
 234         bool has_host_visible;
 235         struct virtio_shm_region host_visible_region;
 236         struct drm_mm host_visible_mm;
 237
 238         struct work_struct config_changed_work;
 239
 240         struct work_struct obj_free_work;
 241         spinlock_t obj_free_lock;
 242         struct list_head obj_free_list;
 243
 244         struct virtio_gpu_drv_capset *capsets;
 245         uint32_t num_capsets;
 246         struct list_head cap_cache;
 247
 248         /* protects uuid state when exporting */
 249         spinlock_t resource_export_lock;
 250         /* protects map state and host_visible_mm */
 251         spinlock_t host_visible_lock;
 252 };
 253
 254 struct virtio_gpu_fpriv {
 255         uint32_t ctx_id;
 256         bool context_created;
 257         struct mutex context_lock;
 258 };
 259
 260 /* virtgpu_ioctl.c */
 261 #define DRM_VIRTIO_NUM_IOCTLS 11
 262 extern struct drm_ioctl_desc virtio_gpu_ioctls[DRM_VIRTIO_NUM_IOCTLS];
 263 void virtio_gpu_create_context(struct drm_device *dev, struct drm_file *file);
 264
 265 /* virtgpu_kms.c */
 266 int virtio_gpu_init(struct drm_device *dev);
 267 void virtio_gpu_deinit(struct drm_device *dev);
 268 void virtio_gpu_release(struct drm_device *dev);
 269 int virtio_gpu_driver_open(struct drm_device *dev, struct drm_file *file);
 270 void virtio_gpu_driver_postclose(struct drm_device *dev, struct drm_file *file);
 271
 272 /* virtgpu_gem.c */
 273 int virtio_gpu_gem_object_open(struct drm_gem_object *obj,
 274                                struct drm_file *file);
 275 void virtio_gpu_gem_object_close(struct drm_gem_object *obj,
 276                                  struct drm_file *file);
 277 int virtio_gpu_mode_dumb_create(struct drm_file *file_priv,
 278                                 struct drm_device *dev,
 279                                 struct drm_mode_create_dumb *args);
 280 int virtio_gpu_mode_dumb_mmap(struct drm_file *file_priv,
 281                               struct drm_device *dev,
 282                               uint32_t handle, uint64_t *offset_p);
 283
 284 struct virtio_gpu_object_array *virtio_gpu_array_alloc(u32 nents);
 285 struct virtio_gpu_object_array*
 286 virtio_gpu_array_from_handles(struct drm_file *drm_file, u32 *handles, u32 nents);
 287 void virtio_gpu_array_add_obj(struct virtio_gpu_object_array *objs,
 288                               struct drm_gem_object *obj);
 289 int virtio_gpu_array_lock_resv(struct virtio_gpu_object_array *objs);
 290 void virtio_gpu_array_unlock_resv(struct virtio_gpu_object_array *objs);
 291 void virtio_gpu_array_add_fence(struct virtio_gpu_object_array *objs,
 292                                 struct dma_fence *fence);
 293 void virtio_gpu_array_put_free(struct virtio_gpu_object_array *objs);
 294 void virtio_gpu_array_put_free_delayed(struct virtio_gpu_device *vgdev,
 295                                        struct virtio_gpu_object_array *objs);
 296 void virtio_gpu_array_put_free_work(struct work_struct *work);
 297
 298 /* virtgpu_vq.c */
 299 int virtio_gpu_alloc_vbufs(struct virtio_gpu_device *vgdev);
 300 void virtio_gpu_free_vbufs(struct virtio_gpu_device *vgdev);
 301 void virtio_gpu_cmd_create_resource(struct virtio_gpu_device *vgdev,
 302                                     struct virtio_gpu_object *bo,
 303                                     struct virtio_gpu_object_params *params,
 304                                     struct virtio_gpu_object_array *objs,
 305                                     struct virtio_gpu_fence *fence);
 306 void virtio_gpu_cmd_unref_resource(struct virtio_gpu_device *vgdev,
 307                                    struct virtio_gpu_object *bo);
 308 void virtio_gpu_cmd_transfer_to_host_2d(struct virtio_gpu_device *vgdev,
 309                                         uint64_t offset,
 310                                         uint32_t width, uint32_t height,
 311                                         uint32_t x, uint32_t y,
 312                                         struct virtio_gpu_object_array *objs,
 313                                         struct virtio_gpu_fence *fence);
 314 void virtio_gpu_cmd_resource_flush(struct virtio_gpu_device *vgdev,
 315                                    uint32_t resource_id,
 316                                    uint32_t x, uint32_t y,
 317                                    uint32_t width, uint32_t height);
 318 void virtio_gpu_cmd_set_scanout(struct virtio_gpu_device *vgdev,
 319                                 uint32_t scanout_id, uint32_t resource_id,
 320                                 uint32_t width, uint32_t height,
 321                                 uint32_t x, uint32_t y);
 322 void virtio_gpu_object_attach(struct virtio_gpu_device *vgdev,
 323                               struct virtio_gpu_object *obj,
 324                               struct virtio_gpu_mem_entry *ents,
 325                               unsigned int nents);
 326 int virtio_gpu_attach_status_page(struct virtio_gpu_device *vgdev);
 327 int virtio_gpu_detach_status_page(struct virtio_gpu_device *vgdev);
 328 void virtio_gpu_cursor_ping(struct virtio_gpu_device *vgdev,
 329                             struct virtio_gpu_output *output);
 330 int virtio_gpu_cmd_get_display_info(struct virtio_gpu_device *vgdev);
 331 int virtio_gpu_cmd_get_capset_info(struct virtio_gpu_device *vgdev, int idx);
 332 int virtio_gpu_cmd_get_capset(struct virtio_gpu_device *vgdev,
 333                               int idx, int version,
 334                               struct virtio_gpu_drv_cap_cache **cache_p);
 335 int virtio_gpu_cmd_get_edids(struct virtio_gpu_device *vgdev);
 336 void virtio_gpu_cmd_context_create(struct virtio_gpu_device *vgdev, uint32_t id,
 337                                    uint32_t nlen, const char *name);
 338 void virtio_gpu_cmd_context_destroy(struct virtio_gpu_device *vgdev,
 339                                     uint32_t id);
 340 void virtio_gpu_cmd_context_attach_resource(struct virtio_gpu_device *vgdev,
 341                                             uint32_t ctx_id,
 342                                             struct virtio_gpu_object_array *objs);
 343 void virtio_gpu_cmd_context_detach_resource(struct virtio_gpu_device *vgdev,
 344                                             uint32_t ctx_id,
 345                                             struct virtio_gpu_object_array *objs);
 346 void virtio_gpu_cmd_submit(struct virtio_gpu_device *vgdev,
 347                            void *data, uint32_t data_size,
 348                            uint32_t ctx_id,
 349                            struct virtio_gpu_object_array *objs,
 350                            struct virtio_gpu_fence *fence);
 351 void virtio_gpu_cmd_transfer_from_host_3d(struct virtio_gpu_device *vgdev,
 352                                           uint32_t ctx_id,
 353                                           uint64_t offset, uint32_t level,
 354                                           uint32_t stride,
 355                                           uint32_t layer_stride,
 356                                           struct drm_virtgpu_3d_box *box,
 357                                           struct virtio_gpu_object_array *objs,
 358                                           struct virtio_gpu_fence *fence);
 359 void virtio_gpu_cmd_transfer_to_host_3d(struct virtio_gpu_device *vgdev,
 360                                         uint32_t ctx_id,
 361                                         uint64_t offset, uint32_t level,
 362                                         uint32_t stride,
 363                                         uint32_t layer_stride,
 364                                         struct drm_virtgpu_3d_box *box,
 365                                         struct virtio_gpu_object_array *objs,
 366                                         struct virtio_gpu_fence *fence);
 367 void
 368 virtio_gpu_cmd_resource_create_3d(struct virtio_gpu_device *vgdev,
 369                                   struct virtio_gpu_object *bo,
 370                                   struct virtio_gpu_object_params *params,
 371                                   struct virtio_gpu_object_array *objs,
 372                                   struct virtio_gpu_fence *fence);
 373 void virtio_gpu_ctrl_ack(struct virtqueue *vq);
 374 void virtio_gpu_cursor_ack(struct virtqueue *vq);
 375 void virtio_gpu_fence_ack(struct virtqueue *vq);
 376 void virtio_gpu_dequeue_ctrl_func(struct work_struct *work);
 377 void virtio_gpu_dequeue_cursor_func(struct work_struct *work);
 378 void virtio_gpu_dequeue_fence_func(struct work_struct *work);
 379
 380 void virtio_gpu_notify(struct virtio_gpu_device *vgdev);
 381
 382 int
 383 virtio_gpu_cmd_resource_assign_uuid(struct virtio_gpu_device *vgdev,
 384                                     struct virtio_gpu_object_array *objs);
 385
 386 int virtio_gpu_cmd_map(struct virtio_gpu_device *vgdev,
 387                        struct virtio_gpu_object_array *objs, uint64_t offset);
 388
 389 void virtio_gpu_cmd_unmap(struct virtio_gpu_device *vgdev,
 390                           struct virtio_gpu_object *bo);
 391
 392 void
 393 virtio_gpu_cmd_resource_create_blob(struct virtio_gpu_device *vgdev,
 394                                     struct virtio_gpu_object *bo,
 395                                     struct virtio_gpu_object_params *params,
 396                                     struct virtio_gpu_mem_entry *ents,
 397                                     uint32_t nents);
 398 void
 399 virtio_gpu_cmd_set_scanout_blob(struct virtio_gpu_device *vgdev,
 400                                 uint32_t scanout_id,
 401                                 struct virtio_gpu_object *bo,
 402                                 struct drm_framebuffer *fb,
 403                                 uint32_t width, uint32_t height,
 404                                 uint32_t x, uint32_t y);
 405
 406 /* virtgpu_display.c */
 407 int virtio_gpu_modeset_init(struct virtio_gpu_device *vgdev);
 408 void virtio_gpu_modeset_fini(struct virtio_gpu_device *vgdev);
 409
 410 /* virtgpu_plane.c */
 411 uint32_t virtio_gpu_translate_format(uint32_t drm_fourcc);
 412 struct drm_plane *virtio_gpu_plane_init(struct virtio_gpu_device *vgdev,
 413                                         enum drm_plane_type type,
 414                                         int index);
 415
 416 /* virtgpu_fence.c */
 417 struct virtio_gpu_fence *virtio_gpu_fence_alloc(
 418         struct virtio_gpu_device *vgdev);
 419 void virtio_gpu_fence_emit(struct virtio_gpu_device *vgdev,
 420                           struct virtio_gpu_ctrl_hdr *cmd_hdr,
 421                           struct virtio_gpu_fence *fence);
 422 void virtio_gpu_fence_event_process(struct virtio_gpu_device *vdev,
 423                                     u64 fence_id);
 424
 425 /* virtgpu_object.c */
 426 void virtio_gpu_cleanup_object(struct virtio_gpu_object *bo);
 427 struct drm_gem_object *virtio_gpu_create_object(struct drm_device *dev,
 428                                                 size_t size);
 429 int virtio_gpu_object_create(struct virtio_gpu_device *vgdev,
 430                              struct virtio_gpu_object_params *params,
 431                              struct virtio_gpu_object **bo_ptr,
 432                              struct virtio_gpu_fence *fence);
 433
 434 bool virtio_gpu_is_shmem(struct virtio_gpu_object *bo);
 435
 436 int virtio_gpu_resource_id_get(struct virtio_gpu_device *vgdev,
 437                                uint32_t *resid);
 438 /* virtgpu_prime.c */
 439 int virtio_gpu_resource_assign_uuid(struct virtio_gpu_device *vgdev,
 440                                     struct virtio_gpu_object *bo);
 441 struct dma_buf *virtgpu_gem_prime_export(struct drm_gem_object *obj,
 442                                          int flags);
 443 struct drm_gem_object *virtgpu_gem_prime_import(struct drm_device *dev,
 444                                                 struct dma_buf *buf);
 445 int virtgpu_gem_prime_get_uuid(struct drm_gem_object *obj,
 446                                uuid_t *uuid);
 447 struct drm_gem_object *virtgpu_gem_prime_import_sg_table(
 448         struct drm_device *dev, struct dma_buf_attachment *attach,
 449         struct sg_table *sgt);
 450
 451 /* virtgpu_debugfs.c */
 452 void virtio_gpu_debugfs_init(struct drm_minor *minor);
 453
 454 /* virtgpu_vram.c */
 455 bool virtio_gpu_is_vram(struct virtio_gpu_object *bo);
 456 int virtio_gpu_vram_create(struct virtio_gpu_device *vgdev,
 457                            struct virtio_gpu_object_params *params,
 458                            struct virtio_gpu_object **bo_ptr);
 459 #endif