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_gem.h>
  39 #include <drm/drm_gem_shmem_helper.h>
  40 #include <drm/drm_ioctl.h>
  41 #include <drm/drm_probe_helper.h>
  42 #include <drm/virtgpu_drm.h>
  43
  44 #define DRIVER_NAME "virtio_gpu"
  45 #define DRIVER_DESC "virtio GPU"
  46 #define DRIVER_DATE "0"
  47
  48 #define DRIVER_MAJOR 0
  49 #define DRIVER_MINOR 1
  50 #define DRIVER_PATCHLEVEL 0
  51
  52 struct virtio_gpu_object_params {
  53         uint32_t format;
  54         uint32_t width;
  55         uint32_t height;
  56         unsigned long size;
  57         bool dumb;
  58         /* 3d */
  59         bool virgl;
  60         uint32_t target;
  61         uint32_t bind;
  62         uint32_t depth;
  63         uint32_t array_size;
  64         uint32_t last_level;
  65         uint32_t nr_samples;
  66         uint32_t flags;
  67 };
  68
  69 struct virtio_gpu_object {
  70         struct drm_gem_shmem_object base;
  71         uint32_t hw_res_handle;
  72         bool dumb;
  73         bool created;
  74 };
  75 #define gem_to_virtio_gpu_obj(gobj) \
  76         container_of((gobj), struct virtio_gpu_object, base.base)
  77
  78 struct virtio_gpu_object_shmem {
  79         struct virtio_gpu_object base;
  80         struct sg_table *pages;
  81         uint32_t mapped;
  82 };
  83
  84 #define to_virtio_gpu_shmem(virtio_gpu_object) \
  85         container_of((virtio_gpu_object), struct virtio_gpu_object_shmem, base)
  86
  87 struct virtio_gpu_object_array {
  88         struct ww_acquire_ctx ticket;
  89         struct list_head next;
  90         u32 nents, total;
  91         struct drm_gem_object *objs[];
  92 };
  93
  94 struct virtio_gpu_vbuffer;
  95 struct virtio_gpu_device;
  96
  97 typedef void (*virtio_gpu_resp_cb)(struct virtio_gpu_device *vgdev,
  98                                    struct virtio_gpu_vbuffer *vbuf);
  99
 100 struct virtio_gpu_fence_driver {
 101         atomic64_t       last_seq;
 102         uint64_t         sync_seq;
 103         uint64_t         context;
 104         struct list_head fences;
 105         spinlock_t       lock;
 106 };
 107
 108 struct virtio_gpu_fence {
 109         struct dma_fence f;
 110         struct virtio_gpu_fence_driver *drv;
 111         struct list_head node;
 112 };
 113
 114 struct virtio_gpu_vbuffer {
 115         char *buf;
 116         int size;
 117
 118         void *data_buf;
 119         uint32_t data_size;
 120
 121         char *resp_buf;
 122         int resp_size;
 123         virtio_gpu_resp_cb resp_cb;
 124         void *resp_cb_data;
 125
 126         struct virtio_gpu_object_array *objs;
 127         struct list_head list;
 128 };
 129
 130 struct virtio_gpu_output {
 131         int index;
 132         struct drm_crtc crtc;
 133         struct drm_connector conn;
 134         struct drm_encoder enc;
 135         struct virtio_gpu_display_one info;
 136         struct virtio_gpu_update_cursor cursor;
 137         struct edid *edid;
 138         int cur_x;
 139         int cur_y;
 140         bool enabled;
 141 };
 142 #define drm_crtc_to_virtio_gpu_output(x) \
 143         container_of(x, struct virtio_gpu_output, crtc)
 144
 145 struct virtio_gpu_framebuffer {
 146         struct drm_framebuffer base;
 147         struct virtio_gpu_fence *fence;
 148 };
 149 #define to_virtio_gpu_framebuffer(x) \
 150         container_of(x, struct virtio_gpu_framebuffer, base)
 151
 152 struct virtio_gpu_queue {
 153         struct virtqueue *vq;
 154         spinlock_t qlock;
 155         wait_queue_head_t ack_queue;
 156         struct work_struct dequeue_work;
 157 };
 158
 159 struct virtio_gpu_drv_capset {
 160         uint32_t id;
 161         uint32_t max_version;
 162         uint32_t max_size;
 163 };
 164
 165 struct virtio_gpu_drv_cap_cache {
 166         struct list_head head;
 167         void *caps_cache;
 168         uint32_t id;
 169         uint32_t version;
 170         uint32_t size;
 171         atomic_t is_valid;
 172 };
 173
 174 struct virtio_gpu_device {
 175         struct device *dev;
 176         struct drm_device *ddev;
 177
 178         struct virtio_device *vdev;
 179
 180         struct virtio_gpu_output outputs[VIRTIO_GPU_MAX_SCANOUTS];
 181         uint32_t num_scanouts;
 182
 183         struct virtio_gpu_queue ctrlq;
 184         struct virtio_gpu_queue cursorq;
 185         struct kmem_cache *vbufs;
 186
 187         atomic_t pending_commands;
 188
 189         struct ida      resource_ida;
 190
 191         wait_queue_head_t resp_wq;
 192         /* current display info */
 193         spinlock_t display_info_lock;
 194         bool display_info_pending;
 195
 196         struct virtio_gpu_fence_driver fence_drv;
 197
 198         struct ida      ctx_id_ida;
 199
 200         bool has_virgl_3d;
 201         bool has_edid;
 202         bool has_indirect;
 203
 204         struct work_struct config_changed_work;
 205
 206         struct work_struct obj_free_work;
 207         spinlock_t obj_free_lock;
 208         struct list_head obj_free_list;
 209
 210         struct virtio_gpu_drv_capset *capsets;
 211         uint32_t num_capsets;
 212         struct list_head cap_cache;
 213 };
 214
 215 struct virtio_gpu_fpriv {
 216         uint32_t ctx_id;
 217         bool context_created;
 218         struct mutex context_lock;
 219 };
 220
 221 /* virtgpu_ioctl.c */
 222 #define DRM_VIRTIO_NUM_IOCTLS 10
 223 extern struct drm_ioctl_desc virtio_gpu_ioctls[DRM_VIRTIO_NUM_IOCTLS];
 224 void virtio_gpu_create_context(struct drm_device *dev, struct drm_file *file);
 225
 226 /* virtgpu_kms.c */
 227 int virtio_gpu_init(struct drm_device *dev);
 228 void virtio_gpu_deinit(struct drm_device *dev);
 229 void virtio_gpu_release(struct drm_device *dev);
 230 int virtio_gpu_driver_open(struct drm_device *dev, struct drm_file *file);
 231 void virtio_gpu_driver_postclose(struct drm_device *dev, struct drm_file *file);
 232
 233 /* virtgpu_gem.c */
 234 int virtio_gpu_gem_object_open(struct drm_gem_object *obj,
 235                                struct drm_file *file);
 236 void virtio_gpu_gem_object_close(struct drm_gem_object *obj,
 237                                  struct drm_file *file);
 238 int virtio_gpu_mode_dumb_create(struct drm_file *file_priv,
 239                                 struct drm_device *dev,
 240                                 struct drm_mode_create_dumb *args);
 241 int virtio_gpu_mode_dumb_mmap(struct drm_file *file_priv,
 242                               struct drm_device *dev,
 243                               uint32_t handle, uint64_t *offset_p);
 244
 245 struct virtio_gpu_object_array *virtio_gpu_array_alloc(u32 nents);
 246 struct virtio_gpu_object_array*
 247 virtio_gpu_array_from_handles(struct drm_file *drm_file, u32 *handles, u32 nents);
 248 void virtio_gpu_array_add_obj(struct virtio_gpu_object_array *objs,
 249                               struct drm_gem_object *obj);
 250 int virtio_gpu_array_lock_resv(struct virtio_gpu_object_array *objs);
 251 void virtio_gpu_array_unlock_resv(struct virtio_gpu_object_array *objs);
 252 void virtio_gpu_array_add_fence(struct virtio_gpu_object_array *objs,
 253                                 struct dma_fence *fence);
 254 void virtio_gpu_array_put_free(struct virtio_gpu_object_array *objs);
 255 void virtio_gpu_array_put_free_delayed(struct virtio_gpu_device *vgdev,
 256                                        struct virtio_gpu_object_array *objs);
 257 void virtio_gpu_array_put_free_work(struct work_struct *work);
 258
 259 /* virtgpu_vq.c */
 260 int virtio_gpu_alloc_vbufs(struct virtio_gpu_device *vgdev);
 261 void virtio_gpu_free_vbufs(struct virtio_gpu_device *vgdev);
 262 void virtio_gpu_cmd_create_resource(struct virtio_gpu_device *vgdev,
 263                                     struct virtio_gpu_object *bo,
 264                                     struct virtio_gpu_object_params *params,
 265                                     struct virtio_gpu_object_array *objs,
 266                                     struct virtio_gpu_fence *fence);
 267 void virtio_gpu_cmd_unref_resource(struct virtio_gpu_device *vgdev,
 268                                    struct virtio_gpu_object *bo);
 269 void virtio_gpu_cmd_transfer_to_host_2d(struct virtio_gpu_device *vgdev,
 270                                         uint64_t offset,
 271                                         uint32_t width, uint32_t height,
 272                                         uint32_t x, uint32_t y,
 273                                         struct virtio_gpu_object_array *objs,
 274                                         struct virtio_gpu_fence *fence);
 275 void virtio_gpu_cmd_resource_flush(struct virtio_gpu_device *vgdev,
 276                                    uint32_t resource_id,
 277                                    uint32_t x, uint32_t y,
 278                                    uint32_t width, uint32_t height);
 279 void virtio_gpu_cmd_set_scanout(struct virtio_gpu_device *vgdev,
 280                                 uint32_t scanout_id, uint32_t resource_id,
 281                                 uint32_t width, uint32_t height,
 282                                 uint32_t x, uint32_t y);
 283 void virtio_gpu_object_attach(struct virtio_gpu_device *vgdev,
 284                               struct virtio_gpu_object *obj,
 285                               struct virtio_gpu_mem_entry *ents,
 286                               unsigned int nents);
 287 int virtio_gpu_attach_status_page(struct virtio_gpu_device *vgdev);
 288 int virtio_gpu_detach_status_page(struct virtio_gpu_device *vgdev);
 289 void virtio_gpu_cursor_ping(struct virtio_gpu_device *vgdev,
 290                             struct virtio_gpu_output *output);
 291 int virtio_gpu_cmd_get_display_info(struct virtio_gpu_device *vgdev);
 292 int virtio_gpu_cmd_get_capset_info(struct virtio_gpu_device *vgdev, int idx);
 293 int virtio_gpu_cmd_get_capset(struct virtio_gpu_device *vgdev,
 294                               int idx, int version,
 295                               struct virtio_gpu_drv_cap_cache **cache_p);
 296 int virtio_gpu_cmd_get_edids(struct virtio_gpu_device *vgdev);
 297 void virtio_gpu_cmd_context_create(struct virtio_gpu_device *vgdev, uint32_t id,
 298                                    uint32_t nlen, const char *name);
 299 void virtio_gpu_cmd_context_destroy(struct virtio_gpu_device *vgdev,
 300                                     uint32_t id);
 301 void virtio_gpu_cmd_context_attach_resource(struct virtio_gpu_device *vgdev,
 302                                             uint32_t ctx_id,
 303                                             struct virtio_gpu_object_array *objs);
 304 void virtio_gpu_cmd_context_detach_resource(struct virtio_gpu_device *vgdev,
 305                                             uint32_t ctx_id,
 306                                             struct virtio_gpu_object_array *objs);
 307 void virtio_gpu_cmd_submit(struct virtio_gpu_device *vgdev,
 308                            void *data, uint32_t data_size,
 309                            uint32_t ctx_id,
 310                            struct virtio_gpu_object_array *objs,
 311                            struct virtio_gpu_fence *fence);
 312 void virtio_gpu_cmd_transfer_from_host_3d(struct virtio_gpu_device *vgdev,
 313                                           uint32_t ctx_id,
 314                                           uint64_t offset, uint32_t level,
 315                                           struct drm_virtgpu_3d_box *box,
 316                                           struct virtio_gpu_object_array *objs,
 317                                           struct virtio_gpu_fence *fence);
 318 void virtio_gpu_cmd_transfer_to_host_3d(struct virtio_gpu_device *vgdev,
 319                                         uint32_t ctx_id,
 320                                         uint64_t offset, uint32_t level,
 321                                         struct drm_virtgpu_3d_box *box,
 322                                         struct virtio_gpu_object_array *objs,
 323                                         struct virtio_gpu_fence *fence);
 324 void
 325 virtio_gpu_cmd_resource_create_3d(struct virtio_gpu_device *vgdev,
 326                                   struct virtio_gpu_object *bo,
 327                                   struct virtio_gpu_object_params *params,
 328                                   struct virtio_gpu_object_array *objs,
 329                                   struct virtio_gpu_fence *fence);
 330 void virtio_gpu_ctrl_ack(struct virtqueue *vq);
 331 void virtio_gpu_cursor_ack(struct virtqueue *vq);
 332 void virtio_gpu_fence_ack(struct virtqueue *vq);
 333 void virtio_gpu_dequeue_ctrl_func(struct work_struct *work);
 334 void virtio_gpu_dequeue_cursor_func(struct work_struct *work);
 335 void virtio_gpu_dequeue_fence_func(struct work_struct *work);
 336
 337 void virtio_gpu_notify(struct virtio_gpu_device *vgdev);
 338
 339 /* virtgpu_display.c */
 340 void virtio_gpu_modeset_init(struct virtio_gpu_device *vgdev);
 341 void virtio_gpu_modeset_fini(struct virtio_gpu_device *vgdev);
 342
 343 /* virtgpu_plane.c */
 344 uint32_t virtio_gpu_translate_format(uint32_t drm_fourcc);
 345 struct drm_plane *virtio_gpu_plane_init(struct virtio_gpu_device *vgdev,
 346                                         enum drm_plane_type type,
 347                                         int index);
 348
 349 /* virtgpu_fence.c */
 350 struct virtio_gpu_fence *virtio_gpu_fence_alloc(
 351         struct virtio_gpu_device *vgdev);
 352 void virtio_gpu_fence_emit(struct virtio_gpu_device *vgdev,
 353                           struct virtio_gpu_ctrl_hdr *cmd_hdr,
 354                           struct virtio_gpu_fence *fence);
 355 void virtio_gpu_fence_event_process(struct virtio_gpu_device *vdev,
 356                                     u64 last_seq);
 357
 358 /* virtgpu_object.c */
 359 void virtio_gpu_cleanup_object(struct virtio_gpu_object *bo);
 360 struct drm_gem_object *virtio_gpu_create_object(struct drm_device *dev,
 361                                                 size_t size);
 362 int virtio_gpu_object_create(struct virtio_gpu_device *vgdev,
 363                              struct virtio_gpu_object_params *params,
 364                              struct virtio_gpu_object **bo_ptr,
 365                              struct virtio_gpu_fence *fence);
 366
 367 bool virtio_gpu_is_shmem(struct virtio_gpu_object *bo);
 368
 369 /* virtgpu_prime.c */
 370 struct drm_gem_object *virtgpu_gem_prime_import_sg_table(
 371         struct drm_device *dev, struct dma_buf_attachment *attach,
 372         struct sg_table *sgt);
 373
 374 /* virtgpu_debugfs.c */
 375 void virtio_gpu_debugfs_init(struct drm_minor *minor);
 376
 377 #endif