2 * Copyright (C) 2015 Red Hat, Inc.
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:
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.
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.
29 #include <linux/virtio.h>
30 #include <linux/virtio_ids.h>
31 #include <linux/virtio_config.h>
32 #include <linux/virtio_gpu.h>
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>
45 #define DRIVER_NAME "virtio_gpu"
46 #define DRIVER_DESC "virtio GPU"
47 #define DRIVER_DATE "0"
49 #define DRIVER_MAJOR 0
50 #define DRIVER_MINOR 1
51 #define DRIVER_PATCHLEVEL 0
53 #define STATE_INITIALIZING 0
57 struct virtio_gpu_object_params {
64 /* classic resources only */
76 /* blob resources only */
83 struct virtio_gpu_object {
84 struct drm_gem_shmem_object base;
85 uint32_t hw_res_handle;
88 bool host3d_blob, guest_blob;
89 uint32_t blob_mem, blob_flags;
94 #define gem_to_virtio_gpu_obj(gobj) \
95 container_of((gobj), struct virtio_gpu_object, base.base)
97 struct virtio_gpu_object_shmem {
98 struct virtio_gpu_object base;
99 struct sg_table *pages;
103 struct virtio_gpu_object_vram {
104 struct virtio_gpu_object base;
107 struct drm_mm_node vram_node;
110 #define to_virtio_gpu_shmem(virtio_gpu_object) \
111 container_of((virtio_gpu_object), struct virtio_gpu_object_shmem, base)
113 #define to_virtio_gpu_vram(virtio_gpu_object) \
114 container_of((virtio_gpu_object), struct virtio_gpu_object_vram, base)
116 struct virtio_gpu_object_array {
117 struct ww_acquire_ctx ticket;
118 struct list_head next;
120 struct drm_gem_object *objs[];
123 struct virtio_gpu_vbuffer;
124 struct virtio_gpu_device;
126 typedef void (*virtio_gpu_resp_cb)(struct virtio_gpu_device *vgdev,
127 struct virtio_gpu_vbuffer *vbuf);
129 struct virtio_gpu_fence_driver {
130 atomic64_t last_fence_id;
131 uint64_t current_fence_id;
133 struct list_head fences;
137 struct virtio_gpu_fence {
140 struct virtio_gpu_fence_driver *drv;
141 struct list_head node;
144 struct virtio_gpu_vbuffer {
153 virtio_gpu_resp_cb resp_cb;
156 struct virtio_gpu_object_array *objs;
157 struct list_head list;
160 struct virtio_gpu_output {
162 struct drm_crtc crtc;
163 struct drm_connector conn;
164 struct drm_encoder enc;
165 struct virtio_gpu_display_one info;
166 struct virtio_gpu_update_cursor cursor;
172 #define drm_crtc_to_virtio_gpu_output(x) \
173 container_of(x, struct virtio_gpu_output, crtc)
175 struct virtio_gpu_framebuffer {
176 struct drm_framebuffer base;
177 struct virtio_gpu_fence *fence;
179 #define to_virtio_gpu_framebuffer(x) \
180 container_of(x, struct virtio_gpu_framebuffer, base)
182 struct virtio_gpu_queue {
183 struct virtqueue *vq;
185 wait_queue_head_t ack_queue;
186 struct work_struct dequeue_work;
189 struct virtio_gpu_drv_capset {
191 uint32_t max_version;
195 struct virtio_gpu_drv_cap_cache {
196 struct list_head head;
204 struct virtio_gpu_device {
206 struct drm_device *ddev;
208 struct virtio_device *vdev;
210 struct virtio_gpu_output outputs[VIRTIO_GPU_MAX_SCANOUTS];
211 uint32_t num_scanouts;
213 struct virtio_gpu_queue ctrlq;
214 struct virtio_gpu_queue cursorq;
215 struct kmem_cache *vbufs;
217 atomic_t pending_commands;
219 struct ida resource_ida;
221 wait_queue_head_t resp_wq;
222 /* current display info */
223 spinlock_t display_info_lock;
224 bool display_info_pending;
226 struct virtio_gpu_fence_driver fence_drv;
228 struct ida ctx_id_ida;
233 bool has_resource_assign_uuid;
234 bool has_resource_blob;
235 bool has_host_visible;
236 struct virtio_shm_region host_visible_region;
237 struct drm_mm host_visible_mm;
239 struct work_struct config_changed_work;
241 struct work_struct obj_free_work;
242 spinlock_t obj_free_lock;
243 struct list_head obj_free_list;
245 struct virtio_gpu_drv_capset *capsets;
246 uint32_t num_capsets;
247 struct list_head cap_cache;
249 /* protects uuid state when exporting */
250 spinlock_t resource_export_lock;
251 /* protects map state and host_visible_mm */
252 spinlock_t host_visible_lock;
255 struct virtio_gpu_fpriv {
257 bool context_created;
258 struct mutex context_lock;
261 /* virtgpu_ioctl.c */
262 #define DRM_VIRTIO_NUM_IOCTLS 11
263 extern struct drm_ioctl_desc virtio_gpu_ioctls[DRM_VIRTIO_NUM_IOCTLS];
264 void virtio_gpu_create_context(struct drm_device *dev, struct drm_file *file);
267 int virtio_gpu_init(struct drm_device *dev);
268 void virtio_gpu_deinit(struct drm_device *dev);
269 void virtio_gpu_release(struct drm_device *dev);
270 int virtio_gpu_driver_open(struct drm_device *dev, struct drm_file *file);
271 void virtio_gpu_driver_postclose(struct drm_device *dev, struct drm_file *file);
274 int virtio_gpu_gem_object_open(struct drm_gem_object *obj,
275 struct drm_file *file);
276 void virtio_gpu_gem_object_close(struct drm_gem_object *obj,
277 struct drm_file *file);
278 int virtio_gpu_mode_dumb_create(struct drm_file *file_priv,
279 struct drm_device *dev,
280 struct drm_mode_create_dumb *args);
281 int virtio_gpu_mode_dumb_mmap(struct drm_file *file_priv,
282 struct drm_device *dev,
283 uint32_t handle, uint64_t *offset_p);
285 struct virtio_gpu_object_array *virtio_gpu_array_alloc(u32 nents);
286 struct virtio_gpu_object_array*
287 virtio_gpu_array_from_handles(struct drm_file *drm_file, u32 *handles, u32 nents);
288 void virtio_gpu_array_add_obj(struct virtio_gpu_object_array *objs,
289 struct drm_gem_object *obj);
290 int virtio_gpu_array_lock_resv(struct virtio_gpu_object_array *objs);
291 void virtio_gpu_array_unlock_resv(struct virtio_gpu_object_array *objs);
292 void virtio_gpu_array_add_fence(struct virtio_gpu_object_array *objs,
293 struct dma_fence *fence);
294 void virtio_gpu_array_put_free(struct virtio_gpu_object_array *objs);
295 void virtio_gpu_array_put_free_delayed(struct virtio_gpu_device *vgdev,
296 struct virtio_gpu_object_array *objs);
297 void virtio_gpu_array_put_free_work(struct work_struct *work);
300 int virtio_gpu_alloc_vbufs(struct virtio_gpu_device *vgdev);
301 void virtio_gpu_free_vbufs(struct virtio_gpu_device *vgdev);
302 void virtio_gpu_cmd_create_resource(struct virtio_gpu_device *vgdev,
303 struct virtio_gpu_object *bo,
304 struct virtio_gpu_object_params *params,
305 struct virtio_gpu_object_array *objs,
306 struct virtio_gpu_fence *fence);
307 void virtio_gpu_cmd_unref_resource(struct virtio_gpu_device *vgdev,
308 struct virtio_gpu_object *bo);
309 void virtio_gpu_cmd_transfer_to_host_2d(struct virtio_gpu_device *vgdev,
311 uint32_t width, uint32_t height,
312 uint32_t x, uint32_t y,
313 struct virtio_gpu_object_array *objs,
314 struct virtio_gpu_fence *fence);
315 void virtio_gpu_cmd_resource_flush(struct virtio_gpu_device *vgdev,
316 uint32_t resource_id,
317 uint32_t x, uint32_t y,
318 uint32_t width, uint32_t height);
319 void virtio_gpu_cmd_set_scanout(struct virtio_gpu_device *vgdev,
320 uint32_t scanout_id, uint32_t resource_id,
321 uint32_t width, uint32_t height,
322 uint32_t x, uint32_t y);
323 void virtio_gpu_object_attach(struct virtio_gpu_device *vgdev,
324 struct virtio_gpu_object *obj,
325 struct virtio_gpu_mem_entry *ents,
327 int virtio_gpu_attach_status_page(struct virtio_gpu_device *vgdev);
328 int virtio_gpu_detach_status_page(struct virtio_gpu_device *vgdev);
329 void virtio_gpu_cursor_ping(struct virtio_gpu_device *vgdev,
330 struct virtio_gpu_output *output);
331 int virtio_gpu_cmd_get_display_info(struct virtio_gpu_device *vgdev);
332 int virtio_gpu_cmd_get_capset_info(struct virtio_gpu_device *vgdev, int idx);
333 int virtio_gpu_cmd_get_capset(struct virtio_gpu_device *vgdev,
334 int idx, int version,
335 struct virtio_gpu_drv_cap_cache **cache_p);
336 int virtio_gpu_cmd_get_edids(struct virtio_gpu_device *vgdev);
337 void virtio_gpu_cmd_context_create(struct virtio_gpu_device *vgdev, uint32_t id,
338 uint32_t nlen, const char *name);
339 void virtio_gpu_cmd_context_destroy(struct virtio_gpu_device *vgdev,
341 void virtio_gpu_cmd_context_attach_resource(struct virtio_gpu_device *vgdev,
343 struct virtio_gpu_object_array *objs);
344 void virtio_gpu_cmd_context_detach_resource(struct virtio_gpu_device *vgdev,
346 struct virtio_gpu_object_array *objs);
347 void virtio_gpu_cmd_submit(struct virtio_gpu_device *vgdev,
348 void *data, uint32_t data_size,
350 struct virtio_gpu_object_array *objs,
351 struct virtio_gpu_fence *fence);
352 void virtio_gpu_cmd_transfer_from_host_3d(struct virtio_gpu_device *vgdev,
354 uint64_t offset, uint32_t level,
356 uint32_t layer_stride,
357 struct drm_virtgpu_3d_box *box,
358 struct virtio_gpu_object_array *objs,
359 struct virtio_gpu_fence *fence);
360 void virtio_gpu_cmd_transfer_to_host_3d(struct virtio_gpu_device *vgdev,
362 uint64_t offset, uint32_t level,
364 uint32_t layer_stride,
365 struct drm_virtgpu_3d_box *box,
366 struct virtio_gpu_object_array *objs,
367 struct virtio_gpu_fence *fence);
369 virtio_gpu_cmd_resource_create_3d(struct virtio_gpu_device *vgdev,
370 struct virtio_gpu_object *bo,
371 struct virtio_gpu_object_params *params,
372 struct virtio_gpu_object_array *objs,
373 struct virtio_gpu_fence *fence);
374 void virtio_gpu_ctrl_ack(struct virtqueue *vq);
375 void virtio_gpu_cursor_ack(struct virtqueue *vq);
376 void virtio_gpu_fence_ack(struct virtqueue *vq);
377 void virtio_gpu_dequeue_ctrl_func(struct work_struct *work);
378 void virtio_gpu_dequeue_cursor_func(struct work_struct *work);
379 void virtio_gpu_dequeue_fence_func(struct work_struct *work);
381 void virtio_gpu_notify(struct virtio_gpu_device *vgdev);
384 virtio_gpu_cmd_resource_assign_uuid(struct virtio_gpu_device *vgdev,
385 struct virtio_gpu_object_array *objs);
387 int virtio_gpu_cmd_map(struct virtio_gpu_device *vgdev,
388 struct virtio_gpu_object_array *objs, uint64_t offset);
390 void virtio_gpu_cmd_unmap(struct virtio_gpu_device *vgdev,
391 struct virtio_gpu_object *bo);
394 virtio_gpu_cmd_resource_create_blob(struct virtio_gpu_device *vgdev,
395 struct virtio_gpu_object *bo,
396 struct virtio_gpu_object_params *params,
397 struct virtio_gpu_mem_entry *ents,
400 virtio_gpu_cmd_set_scanout_blob(struct virtio_gpu_device *vgdev,
402 struct virtio_gpu_object *bo,
403 struct drm_framebuffer *fb,
404 uint32_t width, uint32_t height,
405 uint32_t x, uint32_t y);
407 /* virtgpu_display.c */
408 int virtio_gpu_modeset_init(struct virtio_gpu_device *vgdev);
409 void virtio_gpu_modeset_fini(struct virtio_gpu_device *vgdev);
411 /* virtgpu_plane.c */
412 uint32_t virtio_gpu_translate_format(uint32_t drm_fourcc);
413 struct drm_plane *virtio_gpu_plane_init(struct virtio_gpu_device *vgdev,
414 enum drm_plane_type type,
417 /* virtgpu_fence.c */
418 struct virtio_gpu_fence *virtio_gpu_fence_alloc(
419 struct virtio_gpu_device *vgdev);
420 void virtio_gpu_fence_emit(struct virtio_gpu_device *vgdev,
421 struct virtio_gpu_ctrl_hdr *cmd_hdr,
422 struct virtio_gpu_fence *fence);
423 void virtio_gpu_fence_event_process(struct virtio_gpu_device *vdev,
426 /* virtgpu_object.c */
427 void virtio_gpu_cleanup_object(struct virtio_gpu_object *bo);
428 struct drm_gem_object *virtio_gpu_create_object(struct drm_device *dev,
430 int virtio_gpu_object_create(struct virtio_gpu_device *vgdev,
431 struct virtio_gpu_object_params *params,
432 struct virtio_gpu_object **bo_ptr,
433 struct virtio_gpu_fence *fence);
435 bool virtio_gpu_is_shmem(struct virtio_gpu_object *bo);
437 int virtio_gpu_resource_id_get(struct virtio_gpu_device *vgdev,
439 /* virtgpu_prime.c */
440 int virtio_gpu_resource_assign_uuid(struct virtio_gpu_device *vgdev,
441 struct virtio_gpu_object *bo);
442 struct dma_buf *virtgpu_gem_prime_export(struct drm_gem_object *obj,
444 struct drm_gem_object *virtgpu_gem_prime_import(struct drm_device *dev,
445 struct dma_buf *buf);
446 int virtgpu_gem_prime_get_uuid(struct drm_gem_object *obj,
448 struct drm_gem_object *virtgpu_gem_prime_import_sg_table(
449 struct drm_device *dev, struct dma_buf_attachment *attach,
450 struct sg_table *sgt);
452 /* virtgpu_debugfs.c */
453 void virtio_gpu_debugfs_init(struct drm_minor *minor);
456 bool virtio_gpu_is_vram(struct virtio_gpu_object *bo);
457 int virtio_gpu_vram_create(struct virtio_gpu_device *vgdev,
458 struct virtio_gpu_object_params *params,
459 struct virtio_gpu_object **bo_ptr);