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_encoder.h>
  36 #include <drm/drm_fb_helper.h>
  37 #include <drm/drm_gem.h>
  38 #include <drm/drm_gem_shmem_helper.h>
  39 #include <drm/drm_ioctl.h>
  40 #include <drm/drm_probe_helper.h>
  41 #include <drm/virtgpu_drm.h>
  42
  43 #define DRIVER_NAME "virtio_gpu"
  44 #define DRIVER_DESC "virtio GPU"
  45 #define DRIVER_DATE "0"
  46
  47 #define DRIVER_MAJOR 0
  48 #define DRIVER_MINOR 1
  49 #define DRIVER_PATCHLEVEL 0
  50
  51 struct virtio_gpu_object_params {
  52         uint32_t format;
  53         uint32_t width;
  54         uint32_t height;
  55         unsigned long size;
  56         bool dumb;
  57         /* 3d */
  58         bool virgl;
  59         uint32_t target;
  60         uint32_t bind;
  61         uint32_t depth;
  62         uint32_t array_size;
  63         uint32_t last_level;
  64         uint32_t nr_samples;
  65         uint32_t flags;
  66 };
  67
  68 struct virtio_gpu_object {
  69         struct drm_gem_shmem_object base;
  70         uint32_t hw_res_handle;
  71
  72         struct sg_table *pages;
  73         uint32_t mapped;
  74         bool dumb;
  75         bool created;
  76 };
  77 #define gem_to_virtio_gpu_obj(gobj) \
  78         container_of((gobj), struct virtio_gpu_object, base.base)
  79
  80 struct virtio_gpu_object_array {
  81         struct ww_acquire_ctx ticket;
  82         struct list_head next;
  83         u32 nents, total;
  84         struct drm_gem_object *objs[];
  85 };
  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
 107 struct virtio_gpu_vbuffer {
 108         char *buf;
 109         int size;
 110
 111         void *data_buf;
 112         uint32_t data_size;
 113
 114         char *resp_buf;
 115         int resp_size;
 116         virtio_gpu_resp_cb resp_cb;
 117
 118         struct virtio_gpu_object_array *objs;
 119         struct list_head list;
 120 };
 121
 122 struct virtio_gpu_output {
 123         int index;
 124         struct drm_crtc crtc;
 125         struct drm_connector conn;
 126         struct drm_encoder enc;
 127         struct virtio_gpu_display_one info;
 128         struct virtio_gpu_update_cursor cursor;
 129         struct edid *edid;
 130         int cur_x;
 131         int cur_y;
 132         bool enabled;
 133 };
 134 #define drm_crtc_to_virtio_gpu_output(x) \
 135         container_of(x, struct virtio_gpu_output, crtc)
 136
 137 struct virtio_gpu_framebuffer {
 138         struct drm_framebuffer base;
 139         struct virtio_gpu_fence *fence;
 140 };
 141 #define to_virtio_gpu_framebuffer(x) \
 142         container_of(x, struct virtio_gpu_framebuffer, base)
 143
 144 struct virtio_gpu_queue {
 145         struct virtqueue *vq;
 146         spinlock_t qlock;
 147         wait_queue_head_t ack_queue;
 148         struct work_struct dequeue_work;
 149 };
 150
 151 struct virtio_gpu_drv_capset {
 152         uint32_t id;
 153         uint32_t max_version;
 154         uint32_t max_size;
 155 };
 156
 157 struct virtio_gpu_drv_cap_cache {
 158         struct list_head head;
 159         void *caps_cache;
 160         uint32_t id;
 161         uint32_t version;
 162         uint32_t size;
 163         atomic_t is_valid;
 164 };
 165
 166 struct virtio_gpu_device {
 167         struct device *dev;
 168         struct drm_device *ddev;
 169
 170         struct virtio_device *vdev;
 171
 172         struct virtio_gpu_output outputs[VIRTIO_GPU_MAX_SCANOUTS];
 173         uint32_t num_scanouts;
 174
 175         struct virtio_gpu_queue ctrlq;
 176         struct virtio_gpu_queue cursorq;
 177         struct kmem_cache *vbufs;
 178         bool vqs_ready;
 179
 180         bool disable_notify;
 181         bool pending_notify;
 182
 183         struct ida      resource_ida;
 184
 185         wait_queue_head_t resp_wq;
 186         /* current display info */
 187         spinlock_t display_info_lock;
 188         bool display_info_pending;
 189
 190         struct virtio_gpu_fence_driver fence_drv;
 191
 192         struct ida      ctx_id_ida;
 193
 194         bool has_virgl_3d;
 195         bool has_edid;
 196
 197         struct work_struct config_changed_work;
 198
 199         struct work_struct obj_free_work;
 200         spinlock_t obj_free_lock;
 201         struct list_head obj_free_list;
 202
 203         struct virtio_gpu_drv_capset *capsets;
 204         uint32_t num_capsets;
 205         struct list_head cap_cache;
 206 };
 207
 208 struct virtio_gpu_fpriv {
 209         uint32_t ctx_id;
 210 };
 211
 212 /* virtio_ioctl.c */
 213 #define DRM_VIRTIO_NUM_IOCTLS 10
 214 extern struct drm_ioctl_desc virtio_gpu_ioctls[DRM_VIRTIO_NUM_IOCTLS];
 215
 216 /* virtio_kms.c */
 217 int virtio_gpu_init(struct drm_device *dev);
 218 void virtio_gpu_deinit(struct drm_device *dev);
 219 int virtio_gpu_driver_open(struct drm_device *dev, struct drm_file *file);
 220 void virtio_gpu_driver_postclose(struct drm_device *dev, struct drm_file *file);
 221
 222 /* virtio_gem.c */
 223 void virtio_gpu_gem_free_object(struct drm_gem_object *gem_obj);
 224 int virtio_gpu_gem_init(struct virtio_gpu_device *vgdev);
 225 void virtio_gpu_gem_fini(struct virtio_gpu_device *vgdev);
 226 int virtio_gpu_gem_create(struct drm_file *file,
 227                           struct drm_device *dev,
 228                           struct virtio_gpu_object_params *params,
 229                           struct drm_gem_object **obj_p,
 230                           uint32_t *handle_p);
 231 int virtio_gpu_gem_object_open(struct drm_gem_object *obj,
 232                                struct drm_file *file);
 233 void virtio_gpu_gem_object_close(struct drm_gem_object *obj,
 234                                  struct drm_file *file);
 235 int virtio_gpu_mode_dumb_create(struct drm_file *file_priv,
 236                                 struct drm_device *dev,
 237                                 struct drm_mode_create_dumb *args);
 238 int virtio_gpu_mode_dumb_mmap(struct drm_file *file_priv,
 239                               struct drm_device *dev,
 240                               uint32_t handle, uint64_t *offset_p);
 241
 242 struct virtio_gpu_object_array *virtio_gpu_array_alloc(u32 nents);
 243 struct virtio_gpu_object_array*
 244 virtio_gpu_array_from_handles(struct drm_file *drm_file, u32 *handles, u32 nents);
 245 void virtio_gpu_array_add_obj(struct virtio_gpu_object_array *objs,
 246                               struct drm_gem_object *obj);
 247 int virtio_gpu_array_lock_resv(struct virtio_gpu_object_array *objs);
 248 void virtio_gpu_array_unlock_resv(struct virtio_gpu_object_array *objs);
 249 void virtio_gpu_array_add_fence(struct virtio_gpu_object_array *objs,
 250                                 struct dma_fence *fence);
 251 void virtio_gpu_array_put_free(struct virtio_gpu_object_array *objs);
 252 void virtio_gpu_array_put_free_delayed(struct virtio_gpu_device *vgdev,
 253                                        struct virtio_gpu_object_array *objs);
 254 void virtio_gpu_array_put_free_work(struct work_struct *work);
 255
 256 /* virtio vg */
 257 int virtio_gpu_alloc_vbufs(struct virtio_gpu_device *vgdev);
 258 void virtio_gpu_free_vbufs(struct virtio_gpu_device *vgdev);
 259 void virtio_gpu_cmd_create_resource(struct virtio_gpu_device *vgdev,
 260                                     struct virtio_gpu_object *bo,
 261                                     struct virtio_gpu_object_params *params,
 262                                     struct virtio_gpu_object_array *objs,
 263                                     struct virtio_gpu_fence *fence);
 264 void virtio_gpu_cmd_unref_resource(struct virtio_gpu_device *vgdev,
 265                                    uint32_t resource_id);
 266 void virtio_gpu_cmd_transfer_to_host_2d(struct virtio_gpu_device *vgdev,
 267                                         uint64_t offset,
 268                                         uint32_t width, uint32_t height,
 269                                         uint32_t x, uint32_t y,
 270                                         struct virtio_gpu_object_array *objs,
 271                                         struct virtio_gpu_fence *fence);
 272 void virtio_gpu_cmd_resource_flush(struct virtio_gpu_device *vgdev,
 273                                    uint32_t resource_id,
 274                                    uint32_t x, uint32_t y,
 275                                    uint32_t width, uint32_t height);
 276 void virtio_gpu_cmd_set_scanout(struct virtio_gpu_device *vgdev,
 277                                 uint32_t scanout_id, uint32_t resource_id,
 278                                 uint32_t width, uint32_t height,
 279                                 uint32_t x, uint32_t y);
 280 int virtio_gpu_object_attach(struct virtio_gpu_device *vgdev,
 281                              struct virtio_gpu_object *obj,
 282                              struct virtio_gpu_fence *fence);
 283 void virtio_gpu_object_detach(struct virtio_gpu_device *vgdev,
 284                               struct virtio_gpu_object *obj);
 285 int virtio_gpu_attach_status_page(struct virtio_gpu_device *vgdev);
 286 int virtio_gpu_detach_status_page(struct virtio_gpu_device *vgdev);
 287 void virtio_gpu_cursor_ping(struct virtio_gpu_device *vgdev,
 288                             struct virtio_gpu_output *output);
 289 int virtio_gpu_cmd_get_display_info(struct virtio_gpu_device *vgdev);
 290 int virtio_gpu_cmd_get_capset_info(struct virtio_gpu_device *vgdev, int idx);
 291 int virtio_gpu_cmd_get_capset(struct virtio_gpu_device *vgdev,
 292                               int idx, int version,
 293                               struct virtio_gpu_drv_cap_cache **cache_p);
 294 int virtio_gpu_cmd_get_edids(struct virtio_gpu_device *vgdev);
 295 void virtio_gpu_cmd_context_create(struct virtio_gpu_device *vgdev, uint32_t id,
 296                                    uint32_t nlen, const char *name);
 297 void virtio_gpu_cmd_context_destroy(struct virtio_gpu_device *vgdev,
 298                                     uint32_t id);
 299 void virtio_gpu_cmd_context_attach_resource(struct virtio_gpu_device *vgdev,
 300                                             uint32_t ctx_id,
 301                                             struct virtio_gpu_object_array *objs);
 302 void virtio_gpu_cmd_context_detach_resource(struct virtio_gpu_device *vgdev,
 303                                             uint32_t ctx_id,
 304                                             struct virtio_gpu_object_array *objs);
 305 void virtio_gpu_cmd_submit(struct virtio_gpu_device *vgdev,
 306                            void *data, uint32_t data_size,
 307                            uint32_t ctx_id,
 308                            struct virtio_gpu_object_array *objs,
 309                            struct virtio_gpu_fence *fence);
 310 void virtio_gpu_cmd_transfer_from_host_3d(struct virtio_gpu_device *vgdev,
 311                                           uint32_t ctx_id,
 312                                           uint64_t offset, uint32_t level,
 313                                           struct drm_virtgpu_3d_box *box,
 314                                           struct virtio_gpu_object_array *objs,
 315                                           struct virtio_gpu_fence *fence);
 316 void virtio_gpu_cmd_transfer_to_host_3d(struct virtio_gpu_device *vgdev,
 317                                         uint32_t ctx_id,
 318                                         uint64_t offset, uint32_t level,
 319                                         struct drm_virtgpu_3d_box *box,
 320                                         struct virtio_gpu_object_array *objs,
 321                                         struct virtio_gpu_fence *fence);
 322 void
 323 virtio_gpu_cmd_resource_create_3d(struct virtio_gpu_device *vgdev,
 324                                   struct virtio_gpu_object *bo,
 325                                   struct virtio_gpu_object_params *params,
 326                                   struct virtio_gpu_object_array *objs,
 327                                   struct virtio_gpu_fence *fence);
 328 void virtio_gpu_ctrl_ack(struct virtqueue *vq);
 329 void virtio_gpu_cursor_ack(struct virtqueue *vq);
 330 void virtio_gpu_fence_ack(struct virtqueue *vq);
 331 void virtio_gpu_dequeue_ctrl_func(struct work_struct *work);
 332 void virtio_gpu_dequeue_cursor_func(struct work_struct *work);
 333 void virtio_gpu_dequeue_fence_func(struct work_struct *work);
 334
 335 void virtio_gpu_disable_notify(struct virtio_gpu_device *vgdev);
 336 void virtio_gpu_enable_notify(struct virtio_gpu_device *vgdev);
 337
 338 /* virtio_gpu_display.c */
 339 void virtio_gpu_modeset_init(struct virtio_gpu_device *vgdev);
 340 void virtio_gpu_modeset_fini(struct virtio_gpu_device *vgdev);
 341
 342 /* virtio_gpu_plane.c */
 343 uint32_t virtio_gpu_translate_format(uint32_t drm_fourcc);
 344 struct drm_plane *virtio_gpu_plane_init(struct virtio_gpu_device *vgdev,
 345                                         enum drm_plane_type type,
 346                                         int index);
 347
 348 /* virtio_gpu_fence.c */
 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 struct drm_gem_object *virtio_gpu_create_object(struct drm_device *dev,
 359                                                 size_t size);
 360 int virtio_gpu_object_create(struct virtio_gpu_device *vgdev,
 361                              struct virtio_gpu_object_params *params,
 362                              struct virtio_gpu_object **bo_ptr,
 363                              struct virtio_gpu_fence *fence);
 364 /* virtgpu_prime.c */
 365 struct drm_gem_object *virtgpu_gem_prime_import_sg_table(
 366         struct drm_device *dev, struct dma_buf_attachment *attach,
 367         struct sg_table *sgt);
 368
 369 /* virgl debugfs */
 370 int virtio_gpu_debugfs_init(struct drm_minor *minor);
 371
 372 #endif