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_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>
44 #define DRIVER_NAME "virtio_gpu"
45 #define DRIVER_DESC "virtio GPU"
46 #define DRIVER_DATE "0"
48 #define DRIVER_MAJOR 0
49 #define DRIVER_MINOR 1
50 #define DRIVER_PATCHLEVEL 0
52 #define UUID_INITIALIZING 0
53 #define UUID_INITIALIZED 1
54 #define UUID_INITIALIZATION_FAILED 2
56 struct virtio_gpu_object_params {
73 struct virtio_gpu_object {
74 struct drm_gem_shmem_object base;
75 uint32_t hw_res_handle;
82 #define gem_to_virtio_gpu_obj(gobj) \
83 container_of((gobj), struct virtio_gpu_object, base.base)
85 struct virtio_gpu_object_shmem {
86 struct virtio_gpu_object base;
87 struct sg_table *pages;
91 #define to_virtio_gpu_shmem(virtio_gpu_object) \
92 container_of((virtio_gpu_object), struct virtio_gpu_object_shmem, base)
94 struct virtio_gpu_object_array {
95 struct ww_acquire_ctx ticket;
96 struct list_head next;
98 struct drm_gem_object *objs[];
101 struct virtio_gpu_vbuffer;
102 struct virtio_gpu_device;
104 typedef void (*virtio_gpu_resp_cb)(struct virtio_gpu_device *vgdev,
105 struct virtio_gpu_vbuffer *vbuf);
107 struct virtio_gpu_fence_driver {
111 struct list_head fences;
115 struct virtio_gpu_fence {
117 struct virtio_gpu_fence_driver *drv;
118 struct list_head node;
121 struct virtio_gpu_vbuffer {
130 virtio_gpu_resp_cb resp_cb;
133 struct virtio_gpu_object_array *objs;
134 struct list_head list;
137 struct virtio_gpu_output {
139 struct drm_crtc crtc;
140 struct drm_connector conn;
141 struct drm_encoder enc;
142 struct virtio_gpu_display_one info;
143 struct virtio_gpu_update_cursor cursor;
149 #define drm_crtc_to_virtio_gpu_output(x) \
150 container_of(x, struct virtio_gpu_output, crtc)
152 struct virtio_gpu_framebuffer {
153 struct drm_framebuffer base;
154 struct virtio_gpu_fence *fence;
156 #define to_virtio_gpu_framebuffer(x) \
157 container_of(x, struct virtio_gpu_framebuffer, base)
159 struct virtio_gpu_queue {
160 struct virtqueue *vq;
162 wait_queue_head_t ack_queue;
163 struct work_struct dequeue_work;
166 struct virtio_gpu_drv_capset {
168 uint32_t max_version;
172 struct virtio_gpu_drv_cap_cache {
173 struct list_head head;
181 struct virtio_gpu_device {
183 struct drm_device *ddev;
185 struct virtio_device *vdev;
187 struct virtio_gpu_output outputs[VIRTIO_GPU_MAX_SCANOUTS];
188 uint32_t num_scanouts;
190 struct virtio_gpu_queue ctrlq;
191 struct virtio_gpu_queue cursorq;
192 struct kmem_cache *vbufs;
194 atomic_t pending_commands;
196 struct ida resource_ida;
198 wait_queue_head_t resp_wq;
199 /* current display info */
200 spinlock_t display_info_lock;
201 bool display_info_pending;
203 struct virtio_gpu_fence_driver fence_drv;
205 struct ida ctx_id_ida;
210 bool has_resource_assign_uuid;
212 struct work_struct config_changed_work;
214 struct work_struct obj_free_work;
215 spinlock_t obj_free_lock;
216 struct list_head obj_free_list;
218 struct virtio_gpu_drv_capset *capsets;
219 uint32_t num_capsets;
220 struct list_head cap_cache;
222 /* protects resource state when exporting */
223 spinlock_t resource_export_lock;
226 struct virtio_gpu_fpriv {
228 bool context_created;
229 struct mutex context_lock;
232 /* virtgpu_ioctl.c */
233 #define DRM_VIRTIO_NUM_IOCTLS 10
234 extern struct drm_ioctl_desc virtio_gpu_ioctls[DRM_VIRTIO_NUM_IOCTLS];
235 void virtio_gpu_create_context(struct drm_device *dev, struct drm_file *file);
238 int virtio_gpu_init(struct drm_device *dev);
239 void virtio_gpu_deinit(struct drm_device *dev);
240 void virtio_gpu_release(struct drm_device *dev);
241 int virtio_gpu_driver_open(struct drm_device *dev, struct drm_file *file);
242 void virtio_gpu_driver_postclose(struct drm_device *dev, struct drm_file *file);
245 int virtio_gpu_gem_object_open(struct drm_gem_object *obj,
246 struct drm_file *file);
247 void virtio_gpu_gem_object_close(struct drm_gem_object *obj,
248 struct drm_file *file);
249 int virtio_gpu_mode_dumb_create(struct drm_file *file_priv,
250 struct drm_device *dev,
251 struct drm_mode_create_dumb *args);
252 int virtio_gpu_mode_dumb_mmap(struct drm_file *file_priv,
253 struct drm_device *dev,
254 uint32_t handle, uint64_t *offset_p);
256 struct virtio_gpu_object_array *virtio_gpu_array_alloc(u32 nents);
257 struct virtio_gpu_object_array*
258 virtio_gpu_array_from_handles(struct drm_file *drm_file, u32 *handles, u32 nents);
259 void virtio_gpu_array_add_obj(struct virtio_gpu_object_array *objs,
260 struct drm_gem_object *obj);
261 int virtio_gpu_array_lock_resv(struct virtio_gpu_object_array *objs);
262 void virtio_gpu_array_unlock_resv(struct virtio_gpu_object_array *objs);
263 void virtio_gpu_array_add_fence(struct virtio_gpu_object_array *objs,
264 struct dma_fence *fence);
265 void virtio_gpu_array_put_free(struct virtio_gpu_object_array *objs);
266 void virtio_gpu_array_put_free_delayed(struct virtio_gpu_device *vgdev,
267 struct virtio_gpu_object_array *objs);
268 void virtio_gpu_array_put_free_work(struct work_struct *work);
271 int virtio_gpu_alloc_vbufs(struct virtio_gpu_device *vgdev);
272 void virtio_gpu_free_vbufs(struct virtio_gpu_device *vgdev);
273 void virtio_gpu_cmd_create_resource(struct virtio_gpu_device *vgdev,
274 struct virtio_gpu_object *bo,
275 struct virtio_gpu_object_params *params,
276 struct virtio_gpu_object_array *objs,
277 struct virtio_gpu_fence *fence);
278 void virtio_gpu_cmd_unref_resource(struct virtio_gpu_device *vgdev,
279 struct virtio_gpu_object *bo);
280 void virtio_gpu_cmd_transfer_to_host_2d(struct virtio_gpu_device *vgdev,
282 uint32_t width, uint32_t height,
283 uint32_t x, uint32_t y,
284 struct virtio_gpu_object_array *objs,
285 struct virtio_gpu_fence *fence);
286 void virtio_gpu_cmd_resource_flush(struct virtio_gpu_device *vgdev,
287 uint32_t resource_id,
288 uint32_t x, uint32_t y,
289 uint32_t width, uint32_t height);
290 void virtio_gpu_cmd_set_scanout(struct virtio_gpu_device *vgdev,
291 uint32_t scanout_id, uint32_t resource_id,
292 uint32_t width, uint32_t height,
293 uint32_t x, uint32_t y);
294 void virtio_gpu_object_attach(struct virtio_gpu_device *vgdev,
295 struct virtio_gpu_object *obj,
296 struct virtio_gpu_mem_entry *ents,
298 int virtio_gpu_attach_status_page(struct virtio_gpu_device *vgdev);
299 int virtio_gpu_detach_status_page(struct virtio_gpu_device *vgdev);
300 void virtio_gpu_cursor_ping(struct virtio_gpu_device *vgdev,
301 struct virtio_gpu_output *output);
302 int virtio_gpu_cmd_get_display_info(struct virtio_gpu_device *vgdev);
303 int virtio_gpu_cmd_get_capset_info(struct virtio_gpu_device *vgdev, int idx);
304 int virtio_gpu_cmd_get_capset(struct virtio_gpu_device *vgdev,
305 int idx, int version,
306 struct virtio_gpu_drv_cap_cache **cache_p);
307 int virtio_gpu_cmd_get_edids(struct virtio_gpu_device *vgdev);
308 void virtio_gpu_cmd_context_create(struct virtio_gpu_device *vgdev, uint32_t id,
309 uint32_t nlen, const char *name);
310 void virtio_gpu_cmd_context_destroy(struct virtio_gpu_device *vgdev,
312 void virtio_gpu_cmd_context_attach_resource(struct virtio_gpu_device *vgdev,
314 struct virtio_gpu_object_array *objs);
315 void virtio_gpu_cmd_context_detach_resource(struct virtio_gpu_device *vgdev,
317 struct virtio_gpu_object_array *objs);
318 void virtio_gpu_cmd_submit(struct virtio_gpu_device *vgdev,
319 void *data, uint32_t data_size,
321 struct virtio_gpu_object_array *objs,
322 struct virtio_gpu_fence *fence);
323 void virtio_gpu_cmd_transfer_from_host_3d(struct virtio_gpu_device *vgdev,
325 uint64_t offset, uint32_t level,
326 struct drm_virtgpu_3d_box *box,
327 struct virtio_gpu_object_array *objs,
328 struct virtio_gpu_fence *fence);
329 void virtio_gpu_cmd_transfer_to_host_3d(struct virtio_gpu_device *vgdev,
331 uint64_t offset, uint32_t level,
332 struct drm_virtgpu_3d_box *box,
333 struct virtio_gpu_object_array *objs,
334 struct virtio_gpu_fence *fence);
336 virtio_gpu_cmd_resource_create_3d(struct virtio_gpu_device *vgdev,
337 struct virtio_gpu_object *bo,
338 struct virtio_gpu_object_params *params,
339 struct virtio_gpu_object_array *objs,
340 struct virtio_gpu_fence *fence);
341 void virtio_gpu_ctrl_ack(struct virtqueue *vq);
342 void virtio_gpu_cursor_ack(struct virtqueue *vq);
343 void virtio_gpu_fence_ack(struct virtqueue *vq);
344 void virtio_gpu_dequeue_ctrl_func(struct work_struct *work);
345 void virtio_gpu_dequeue_cursor_func(struct work_struct *work);
346 void virtio_gpu_dequeue_fence_func(struct work_struct *work);
348 void virtio_gpu_notify(struct virtio_gpu_device *vgdev);
351 virtio_gpu_cmd_resource_assign_uuid(struct virtio_gpu_device *vgdev,
352 struct virtio_gpu_object_array *objs);
354 /* virtgpu_display.c */
355 int virtio_gpu_modeset_init(struct virtio_gpu_device *vgdev);
356 void virtio_gpu_modeset_fini(struct virtio_gpu_device *vgdev);
358 /* virtgpu_plane.c */
359 uint32_t virtio_gpu_translate_format(uint32_t drm_fourcc);
360 struct drm_plane *virtio_gpu_plane_init(struct virtio_gpu_device *vgdev,
361 enum drm_plane_type type,
364 /* virtgpu_fence.c */
365 struct virtio_gpu_fence *virtio_gpu_fence_alloc(
366 struct virtio_gpu_device *vgdev);
367 void virtio_gpu_fence_emit(struct virtio_gpu_device *vgdev,
368 struct virtio_gpu_ctrl_hdr *cmd_hdr,
369 struct virtio_gpu_fence *fence);
370 void virtio_gpu_fence_event_process(struct virtio_gpu_device *vdev,
373 /* virtgpu_object.c */
374 void virtio_gpu_cleanup_object(struct virtio_gpu_object *bo);
375 struct drm_gem_object *virtio_gpu_create_object(struct drm_device *dev,
377 int virtio_gpu_object_create(struct virtio_gpu_device *vgdev,
378 struct virtio_gpu_object_params *params,
379 struct virtio_gpu_object **bo_ptr,
380 struct virtio_gpu_fence *fence);
382 bool virtio_gpu_is_shmem(struct virtio_gpu_object *bo);
384 /* virtgpu_prime.c */
385 struct dma_buf *virtgpu_gem_prime_export(struct drm_gem_object *obj,
387 struct drm_gem_object *virtgpu_gem_prime_import(struct drm_device *dev,
388 struct dma_buf *buf);
389 int virtgpu_gem_prime_get_uuid(struct drm_gem_object *obj,
391 struct drm_gem_object *virtgpu_gem_prime_import_sg_table(
392 struct drm_device *dev, struct dma_buf_attachment *attach,
393 struct sg_table *sgt);
395 /* virtgpu_debugfs.c */
396 void virtio_gpu_debugfs_init(struct drm_minor *minor);