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 460