root/drivers/gpu/drm/virtio/virtgpu_drv.h

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INCLUDED FROM


DEFINITIONS

This source file includes following definitions.
  1. virtio_gpu_object_ref
  2. virtio_gpu_object_unref
  3. virtio_gpu_object_mmap_offset
  4. virtio_gpu_object_reserve
  5. virtio_gpu_object_unreserve

   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_encoder.h>
  36 #include <drm/drm_fb_helper.h>
  37 #include <drm/drm_gem.h>
  38 #include <drm/drm_ioctl.h>
  39 #include <drm/drm_probe_helper.h>
  40 #include <drm/ttm/ttm_bo_api.h>
  41 #include <drm/ttm/ttm_bo_driver.h>
  42 #include <drm/ttm/ttm_module.h>
  43 #include <drm/ttm/ttm_placement.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 struct virtio_gpu_object_params {
  54         uint32_t format;
  55         uint32_t width;
  56         uint32_t height;
  57         unsigned long size;
  58         bool dumb;
  59         /* 3d */
  60         bool virgl;
  61         uint32_t target;
  62         uint32_t bind;
  63         uint32_t depth;
  64         uint32_t array_size;
  65         uint32_t last_level;
  66         uint32_t nr_samples;
  67         uint32_t flags;
  68 };
  69 
  70 struct virtio_gpu_object {
  71         struct drm_gem_object gem_base;
  72         uint32_t hw_res_handle;
  73 
  74         struct sg_table *pages;
  75         uint32_t mapped;
  76         void *vmap;
  77         bool dumb;
  78         struct ttm_place                placement_code;
  79         struct ttm_placement            placement;
  80         struct ttm_buffer_object        tbo;
  81         struct ttm_bo_kmap_obj          kmap;
  82         bool created;
  83 };
  84 #define gem_to_virtio_gpu_obj(gobj) \
  85         container_of((gobj), struct virtio_gpu_object, gem_base)
  86 
  87 struct virtio_gpu_vbuffer;
  88 struct virtio_gpu_device;
  89 
  90 typedef void (*virtio_gpu_resp_cb)(struct virtio_gpu_device *vgdev,
  91                                    struct virtio_gpu_vbuffer *vbuf);
  92 
  93 struct virtio_gpu_fence_driver {
  94         atomic64_t       last_seq;
  95         uint64_t         sync_seq;
  96         uint64_t         context;
  97         struct list_head fences;
  98         spinlock_t       lock;
  99 };
 100 
 101 struct virtio_gpu_fence {
 102         struct dma_fence f;
 103         struct virtio_gpu_fence_driver *drv;
 104         struct list_head node;
 105 };
 106 #define to_virtio_fence(x) \
 107         container_of(x, struct virtio_gpu_fence, f)
 108 
 109 struct virtio_gpu_vbuffer {
 110         char *buf;
 111         int size;
 112 
 113         void *data_buf;
 114         uint32_t data_size;
 115 
 116         char *resp_buf;
 117         int resp_size;
 118 
 119         virtio_gpu_resp_cb resp_cb;
 120 
 121         struct list_head list;
 122 };
 123 
 124 struct virtio_gpu_output {
 125         int index;
 126         struct drm_crtc crtc;
 127         struct drm_connector conn;
 128         struct drm_encoder enc;
 129         struct virtio_gpu_display_one info;
 130         struct virtio_gpu_update_cursor cursor;
 131         struct edid *edid;
 132         int cur_x;
 133         int cur_y;
 134         bool enabled;
 135 };
 136 #define drm_crtc_to_virtio_gpu_output(x) \
 137         container_of(x, struct virtio_gpu_output, crtc)
 138 #define drm_connector_to_virtio_gpu_output(x) \
 139         container_of(x, struct virtio_gpu_output, conn)
 140 #define drm_encoder_to_virtio_gpu_output(x) \
 141         container_of(x, struct virtio_gpu_output, enc)
 142 
 143 struct virtio_gpu_framebuffer {
 144         struct drm_framebuffer base;
 145         struct virtio_gpu_fence *fence;
 146 };
 147 #define to_virtio_gpu_framebuffer(x) \
 148         container_of(x, struct virtio_gpu_framebuffer, base)
 149 
 150 struct virtio_gpu_mman {
 151         struct ttm_bo_device            bdev;
 152 };
 153 
 154 struct virtio_gpu_queue {
 155         struct virtqueue *vq;
 156         spinlock_t qlock;
 157         wait_queue_head_t ack_queue;
 158         struct work_struct dequeue_work;
 159 };
 160 
 161 struct virtio_gpu_drv_capset {
 162         uint32_t id;
 163         uint32_t max_version;
 164         uint32_t max_size;
 165 };
 166 
 167 struct virtio_gpu_drv_cap_cache {
 168         struct list_head head;
 169         void *caps_cache;
 170         uint32_t id;
 171         uint32_t version;
 172         uint32_t size;
 173         atomic_t is_valid;
 174 };
 175 
 176 struct virtio_gpu_device {
 177         struct device *dev;
 178         struct drm_device *ddev;
 179 
 180         struct virtio_device *vdev;
 181 
 182         struct virtio_gpu_mman mman;
 183 
 184         struct virtio_gpu_output outputs[VIRTIO_GPU_MAX_SCANOUTS];
 185         uint32_t num_scanouts;
 186 
 187         struct virtio_gpu_queue ctrlq;
 188         struct virtio_gpu_queue cursorq;
 189         struct kmem_cache *vbufs;
 190         bool vqs_ready;
 191 
 192         struct ida      resource_ida;
 193 
 194         wait_queue_head_t resp_wq;
 195         /* current display info */
 196         spinlock_t display_info_lock;
 197         bool display_info_pending;
 198 
 199         struct virtio_gpu_fence_driver fence_drv;
 200 
 201         struct ida      ctx_id_ida;
 202 
 203         bool has_virgl_3d;
 204         bool has_edid;
 205 
 206         struct work_struct config_changed_work;
 207 
 208         struct virtio_gpu_drv_capset *capsets;
 209         uint32_t num_capsets;
 210         struct list_head cap_cache;
 211 };
 212 
 213 struct virtio_gpu_fpriv {
 214         uint32_t ctx_id;
 215 };
 216 
 217 /* virtio_ioctl.c */
 218 #define DRM_VIRTIO_NUM_IOCTLS 10
 219 extern struct drm_ioctl_desc virtio_gpu_ioctls[DRM_VIRTIO_NUM_IOCTLS];
 220 int virtio_gpu_object_list_validate(struct ww_acquire_ctx *ticket,
 221                                     struct list_head *head);
 222 void virtio_gpu_unref_list(struct list_head *head);
 223 
 224 /* virtio_kms.c */
 225 int virtio_gpu_init(struct drm_device *dev);
 226 void virtio_gpu_deinit(struct drm_device *dev);
 227 int virtio_gpu_driver_open(struct drm_device *dev, struct drm_file *file);
 228 void virtio_gpu_driver_postclose(struct drm_device *dev, struct drm_file *file);
 229 
 230 /* virtio_gem.c */
 231 void virtio_gpu_gem_free_object(struct drm_gem_object *gem_obj);
 232 int virtio_gpu_gem_init(struct virtio_gpu_device *vgdev);
 233 void virtio_gpu_gem_fini(struct virtio_gpu_device *vgdev);
 234 int virtio_gpu_gem_create(struct drm_file *file,
 235                           struct drm_device *dev,
 236                           struct virtio_gpu_object_params *params,
 237                           struct drm_gem_object **obj_p,
 238                           uint32_t *handle_p);
 239 int virtio_gpu_gem_object_open(struct drm_gem_object *obj,
 240                                struct drm_file *file);
 241 void virtio_gpu_gem_object_close(struct drm_gem_object *obj,
 242                                  struct drm_file *file);
 243 struct virtio_gpu_object*
 244 virtio_gpu_alloc_object(struct drm_device *dev,
 245                         struct virtio_gpu_object_params *params,
 246                         struct virtio_gpu_fence *fence);
 247 int virtio_gpu_mode_dumb_create(struct drm_file *file_priv,
 248                                 struct drm_device *dev,
 249                                 struct drm_mode_create_dumb *args);
 250 int virtio_gpu_mode_dumb_mmap(struct drm_file *file_priv,
 251                               struct drm_device *dev,
 252                               uint32_t handle, uint64_t *offset_p);
 253 
 254 /* virtio vg */
 255 int virtio_gpu_alloc_vbufs(struct virtio_gpu_device *vgdev);
 256 void virtio_gpu_free_vbufs(struct virtio_gpu_device *vgdev);
 257 void virtio_gpu_cmd_create_resource(struct virtio_gpu_device *vgdev,
 258                                     struct virtio_gpu_object *bo,
 259                                     struct virtio_gpu_object_params *params,
 260                                     struct virtio_gpu_fence *fence);
 261 void virtio_gpu_cmd_unref_resource(struct virtio_gpu_device *vgdev,
 262                                    uint32_t resource_id);
 263 void virtio_gpu_cmd_transfer_to_host_2d(struct virtio_gpu_device *vgdev,
 264                                         struct virtio_gpu_object *bo,
 265                                         uint64_t offset,
 266                                         __le32 width, __le32 height,
 267                                         __le32 x, __le32 y,
 268                                         struct virtio_gpu_fence *fence);
 269 void virtio_gpu_cmd_resource_flush(struct virtio_gpu_device *vgdev,
 270                                    uint32_t resource_id,
 271                                    uint32_t x, uint32_t y,
 272                                    uint32_t width, uint32_t height);
 273 void virtio_gpu_cmd_set_scanout(struct virtio_gpu_device *vgdev,
 274                                 uint32_t scanout_id, uint32_t resource_id,
 275                                 uint32_t width, uint32_t height,
 276                                 uint32_t x, uint32_t y);
 277 int virtio_gpu_object_attach(struct virtio_gpu_device *vgdev,
 278                              struct virtio_gpu_object *obj,
 279                              struct virtio_gpu_fence *fence);
 280 void virtio_gpu_object_detach(struct virtio_gpu_device *vgdev,
 281                               struct virtio_gpu_object *obj);
 282 int virtio_gpu_attach_status_page(struct virtio_gpu_device *vgdev);
 283 int virtio_gpu_detach_status_page(struct virtio_gpu_device *vgdev);
 284 void virtio_gpu_cursor_ping(struct virtio_gpu_device *vgdev,
 285                             struct virtio_gpu_output *output);
 286 int virtio_gpu_cmd_get_display_info(struct virtio_gpu_device *vgdev);
 287 int virtio_gpu_cmd_get_capset_info(struct virtio_gpu_device *vgdev, int idx);
 288 int virtio_gpu_cmd_get_capset(struct virtio_gpu_device *vgdev,
 289                               int idx, int version,
 290                               struct virtio_gpu_drv_cap_cache **cache_p);
 291 int virtio_gpu_cmd_get_edids(struct virtio_gpu_device *vgdev);
 292 void virtio_gpu_cmd_context_create(struct virtio_gpu_device *vgdev, uint32_t id,
 293                                    uint32_t nlen, const char *name);
 294 void virtio_gpu_cmd_context_destroy(struct virtio_gpu_device *vgdev,
 295                                     uint32_t id);
 296 void virtio_gpu_cmd_context_attach_resource(struct virtio_gpu_device *vgdev,
 297                                             uint32_t ctx_id,
 298                                             uint32_t resource_id);
 299 void virtio_gpu_cmd_context_detach_resource(struct virtio_gpu_device *vgdev,
 300                                             uint32_t ctx_id,
 301                                             uint32_t resource_id);
 302 void virtio_gpu_cmd_submit(struct virtio_gpu_device *vgdev,
 303                            void *data, uint32_t data_size,
 304                            uint32_t ctx_id, struct virtio_gpu_fence *fence);
 305 void virtio_gpu_cmd_transfer_from_host_3d(struct virtio_gpu_device *vgdev,
 306                                           uint32_t resource_id, uint32_t ctx_id,
 307                                           uint64_t offset, uint32_t level,
 308                                           struct virtio_gpu_box *box,
 309                                           struct virtio_gpu_fence *fence);
 310 void virtio_gpu_cmd_transfer_to_host_3d(struct virtio_gpu_device *vgdev,
 311                                         struct virtio_gpu_object *bo,
 312                                         uint32_t ctx_id,
 313                                         uint64_t offset, uint32_t level,
 314                                         struct virtio_gpu_box *box,
 315                                         struct virtio_gpu_fence *fence);
 316 void
 317 virtio_gpu_cmd_resource_create_3d(struct virtio_gpu_device *vgdev,
 318                                   struct virtio_gpu_object *bo,
 319                                   struct virtio_gpu_object_params *params,
 320                                   struct virtio_gpu_fence *fence);
 321 void virtio_gpu_ctrl_ack(struct virtqueue *vq);
 322 void virtio_gpu_cursor_ack(struct virtqueue *vq);
 323 void virtio_gpu_fence_ack(struct virtqueue *vq);
 324 void virtio_gpu_dequeue_ctrl_func(struct work_struct *work);
 325 void virtio_gpu_dequeue_cursor_func(struct work_struct *work);
 326 void virtio_gpu_dequeue_fence_func(struct work_struct *work);
 327 
 328 /* virtio_gpu_display.c */
 329 int virtio_gpu_framebuffer_init(struct drm_device *dev,
 330                                 struct virtio_gpu_framebuffer *vgfb,
 331                                 const struct drm_mode_fb_cmd2 *mode_cmd,
 332                                 struct drm_gem_object *obj);
 333 void virtio_gpu_modeset_init(struct virtio_gpu_device *vgdev);
 334 void virtio_gpu_modeset_fini(struct virtio_gpu_device *vgdev);
 335 
 336 /* virtio_gpu_plane.c */
 337 uint32_t virtio_gpu_translate_format(uint32_t drm_fourcc);
 338 struct drm_plane *virtio_gpu_plane_init(struct virtio_gpu_device *vgdev,
 339                                         enum drm_plane_type type,
 340                                         int index);
 341 
 342 /* virtio_gpu_ttm.c */
 343 int virtio_gpu_ttm_init(struct virtio_gpu_device *vgdev);
 344 void virtio_gpu_ttm_fini(struct virtio_gpu_device *vgdev);
 345 int virtio_gpu_mmap(struct file *filp, struct vm_area_struct *vma);
 346 
 347 /* virtio_gpu_fence.c */
 348 bool virtio_fence_signaled(struct dma_fence *f);
 349 struct virtio_gpu_fence *virtio_gpu_fence_alloc(
 350         struct virtio_gpu_device *vgdev);
 351 void virtio_gpu_fence_emit(struct virtio_gpu_device *vgdev,
 352                           struct virtio_gpu_ctrl_hdr *cmd_hdr,
 353                           struct virtio_gpu_fence *fence);
 354 void virtio_gpu_fence_event_process(struct virtio_gpu_device *vdev,
 355                                     u64 last_seq);
 356 
 357 /* virtio_gpu_object */
 358 int virtio_gpu_object_create(struct virtio_gpu_device *vgdev,
 359                              struct virtio_gpu_object_params *params,
 360                              struct virtio_gpu_object **bo_ptr,
 361                              struct virtio_gpu_fence *fence);
 362 void virtio_gpu_object_kunmap(struct virtio_gpu_object *bo);
 363 int virtio_gpu_object_kmap(struct virtio_gpu_object *bo);
 364 int virtio_gpu_object_get_sg_table(struct virtio_gpu_device *qdev,
 365                                    struct virtio_gpu_object *bo);
 366 void virtio_gpu_object_free_sg_table(struct virtio_gpu_object *bo);
 367 int virtio_gpu_object_wait(struct virtio_gpu_object *bo, bool no_wait);
 368 
 369 /* virtgpu_prime.c */
 370 struct sg_table *virtgpu_gem_prime_get_sg_table(struct drm_gem_object *obj);
 371 struct drm_gem_object *virtgpu_gem_prime_import_sg_table(
 372         struct drm_device *dev, struct dma_buf_attachment *attach,
 373         struct sg_table *sgt);
 374 void *virtgpu_gem_prime_vmap(struct drm_gem_object *obj);
 375 void virtgpu_gem_prime_vunmap(struct drm_gem_object *obj, void *vaddr);
 376 int virtgpu_gem_prime_mmap(struct drm_gem_object *obj,
 377                            struct vm_area_struct *vma);
 378 
 379 static inline struct virtio_gpu_object*
 380 virtio_gpu_object_ref(struct virtio_gpu_object *bo)
 381 {
 382         ttm_bo_get(&bo->tbo);
 383         return bo;
 384 }
 385 
 386 static inline void virtio_gpu_object_unref(struct virtio_gpu_object **bo)
 387 {
 388         struct ttm_buffer_object *tbo;
 389 
 390         if ((*bo) == NULL)
 391                 return;
 392         tbo = &((*bo)->tbo);
 393         ttm_bo_put(tbo);
 394         *bo = NULL;
 395 }
 396 
 397 static inline u64 virtio_gpu_object_mmap_offset(struct virtio_gpu_object *bo)
 398 {
 399         return drm_vma_node_offset_addr(&bo->tbo.base.vma_node);
 400 }
 401 
 402 static inline int virtio_gpu_object_reserve(struct virtio_gpu_object *bo,
 403                                          bool no_wait)
 404 {
 405         int r;
 406 
 407         r = ttm_bo_reserve(&bo->tbo, true, no_wait, NULL);
 408         if (unlikely(r != 0)) {
 409                 if (r != -ERESTARTSYS) {
 410                         struct virtio_gpu_device *qdev =
 411                                 bo->gem_base.dev->dev_private;
 412                         dev_err(qdev->dev, "%p reserve failed\n", bo);
 413                 }
 414                 return r;
 415         }
 416         return 0;
 417 }
 418 
 419 static inline void virtio_gpu_object_unreserve(struct virtio_gpu_object *bo)
 420 {
 421         ttm_bo_unreserve(&bo->tbo);
 422 }
 423 
 424 /* virgl debufs */
 425 int virtio_gpu_debugfs_init(struct drm_minor *minor);
 426 
 427 #endif

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