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_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>
42 #define DRIVER_NAME "virtio_gpu"
43 #define DRIVER_DESC "virtio GPU"
44 #define DRIVER_DATE "0"
46 #define DRIVER_MAJOR 0
47 #define DRIVER_MINOR 1
48 #define DRIVER_PATCHLEVEL 0
50 struct virtio_gpu_object_params {
67 struct virtio_gpu_object {
68 struct drm_gem_shmem_object base;
69 uint32_t hw_res_handle;
71 struct sg_table *pages;
76 #define gem_to_virtio_gpu_obj(gobj) \
77 container_of((gobj), struct virtio_gpu_object, base.base)
79 struct virtio_gpu_object_array {
80 struct ww_acquire_ctx ticket;
81 struct list_head next;
83 struct drm_gem_object *objs[];
86 struct virtio_gpu_vbuffer;
87 struct virtio_gpu_device;
89 typedef void (*virtio_gpu_resp_cb)(struct virtio_gpu_device *vgdev,
90 struct virtio_gpu_vbuffer *vbuf);
92 struct virtio_gpu_fence_driver {
96 struct list_head fences;
100 struct virtio_gpu_fence {
102 struct virtio_gpu_fence_driver *drv;
103 struct list_head node;
105 #define to_virtio_fence(x) \
106 container_of(x, struct virtio_gpu_fence, f)
108 struct virtio_gpu_vbuffer {
117 virtio_gpu_resp_cb resp_cb;
119 struct virtio_gpu_object_array *objs;
120 struct list_head list;
123 struct virtio_gpu_output {
125 struct drm_crtc crtc;
126 struct drm_connector conn;
127 struct drm_encoder enc;
128 struct virtio_gpu_display_one info;
129 struct virtio_gpu_update_cursor cursor;
135 #define drm_crtc_to_virtio_gpu_output(x) \
136 container_of(x, struct virtio_gpu_output, crtc)
137 #define drm_connector_to_virtio_gpu_output(x) \
138 container_of(x, struct virtio_gpu_output, conn)
139 #define drm_encoder_to_virtio_gpu_output(x) \
140 container_of(x, struct virtio_gpu_output, enc)
142 struct virtio_gpu_framebuffer {
143 struct drm_framebuffer base;
144 struct virtio_gpu_fence *fence;
146 #define to_virtio_gpu_framebuffer(x) \
147 container_of(x, struct virtio_gpu_framebuffer, base)
149 struct virtio_gpu_queue {
150 struct virtqueue *vq;
152 wait_queue_head_t ack_queue;
153 struct work_struct dequeue_work;
156 struct virtio_gpu_drv_capset {
158 uint32_t max_version;
162 struct virtio_gpu_drv_cap_cache {
163 struct list_head head;
171 struct virtio_gpu_device {
173 struct drm_device *ddev;
175 struct virtio_device *vdev;
177 struct virtio_gpu_output outputs[VIRTIO_GPU_MAX_SCANOUTS];
178 uint32_t num_scanouts;
180 struct virtio_gpu_queue ctrlq;
181 struct virtio_gpu_queue cursorq;
182 struct kmem_cache *vbufs;
185 struct ida resource_ida;
187 wait_queue_head_t resp_wq;
188 /* current display info */
189 spinlock_t display_info_lock;
190 bool display_info_pending;
192 struct virtio_gpu_fence_driver fence_drv;
194 struct ida ctx_id_ida;
199 struct work_struct config_changed_work;
201 struct work_struct obj_free_work;
202 spinlock_t obj_free_lock;
203 struct list_head obj_free_list;
205 struct virtio_gpu_drv_capset *capsets;
206 uint32_t num_capsets;
207 struct list_head cap_cache;
210 struct virtio_gpu_fpriv {
215 #define DRM_VIRTIO_NUM_IOCTLS 10
216 extern struct drm_ioctl_desc virtio_gpu_ioctls[DRM_VIRTIO_NUM_IOCTLS];
219 int virtio_gpu_init(struct drm_device *dev);
220 void virtio_gpu_deinit(struct drm_device *dev);
221 int virtio_gpu_driver_open(struct drm_device *dev, struct drm_file *file);
222 void virtio_gpu_driver_postclose(struct drm_device *dev, struct drm_file *file);
225 void virtio_gpu_gem_free_object(struct drm_gem_object *gem_obj);
226 int virtio_gpu_gem_init(struct virtio_gpu_device *vgdev);
227 void virtio_gpu_gem_fini(struct virtio_gpu_device *vgdev);
228 int virtio_gpu_gem_create(struct drm_file *file,
229 struct drm_device *dev,
230 struct virtio_gpu_object_params *params,
231 struct drm_gem_object **obj_p,
233 int virtio_gpu_gem_object_open(struct drm_gem_object *obj,
234 struct drm_file *file);
235 void virtio_gpu_gem_object_close(struct drm_gem_object *obj,
236 struct drm_file *file);
237 int virtio_gpu_mode_dumb_create(struct drm_file *file_priv,
238 struct drm_device *dev,
239 struct drm_mode_create_dumb *args);
240 int virtio_gpu_mode_dumb_mmap(struct drm_file *file_priv,
241 struct drm_device *dev,
242 uint32_t handle, uint64_t *offset_p);
244 struct virtio_gpu_object_array *virtio_gpu_array_alloc(u32 nents);
245 struct virtio_gpu_object_array*
246 virtio_gpu_array_from_handles(struct drm_file *drm_file, u32 *handles, u32 nents);
247 void virtio_gpu_array_add_obj(struct virtio_gpu_object_array *objs,
248 struct drm_gem_object *obj);
249 int virtio_gpu_array_lock_resv(struct virtio_gpu_object_array *objs);
250 void virtio_gpu_array_unlock_resv(struct virtio_gpu_object_array *objs);
251 void virtio_gpu_array_add_fence(struct virtio_gpu_object_array *objs,
252 struct dma_fence *fence);
253 void virtio_gpu_array_put_free(struct virtio_gpu_object_array *objs);
254 void virtio_gpu_array_put_free_delayed(struct virtio_gpu_device *vgdev,
255 struct virtio_gpu_object_array *objs);
256 void virtio_gpu_array_put_free_work(struct work_struct *work);
259 int virtio_gpu_alloc_vbufs(struct virtio_gpu_device *vgdev);
260 void virtio_gpu_free_vbufs(struct virtio_gpu_device *vgdev);
261 void virtio_gpu_cmd_create_resource(struct virtio_gpu_device *vgdev,
262 struct virtio_gpu_object *bo,
263 struct virtio_gpu_object_params *params,
264 struct virtio_gpu_object_array *objs,
265 struct virtio_gpu_fence *fence);
266 void virtio_gpu_cmd_unref_resource(struct virtio_gpu_device *vgdev,
267 uint32_t resource_id);
268 void virtio_gpu_cmd_transfer_to_host_2d(struct virtio_gpu_device *vgdev,
270 uint32_t width, uint32_t height,
271 uint32_t x, uint32_t y,
272 struct virtio_gpu_object_array *objs,
273 struct virtio_gpu_fence *fence);
274 void virtio_gpu_cmd_resource_flush(struct virtio_gpu_device *vgdev,
275 uint32_t resource_id,
276 uint32_t x, uint32_t y,
277 uint32_t width, uint32_t height);
278 void virtio_gpu_cmd_set_scanout(struct virtio_gpu_device *vgdev,
279 uint32_t scanout_id, uint32_t resource_id,
280 uint32_t width, uint32_t height,
281 uint32_t x, uint32_t y);
282 int virtio_gpu_object_attach(struct virtio_gpu_device *vgdev,
283 struct virtio_gpu_object *obj,
284 struct virtio_gpu_fence *fence);
285 void virtio_gpu_object_detach(struct virtio_gpu_device *vgdev,
286 struct virtio_gpu_object *obj);
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,
301 void virtio_gpu_cmd_context_attach_resource(struct virtio_gpu_device *vgdev,
303 struct virtio_gpu_object_array *objs);
304 void virtio_gpu_cmd_context_detach_resource(struct virtio_gpu_device *vgdev,
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,
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,
314 uint64_t offset, uint32_t level,
315 struct virtio_gpu_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,
320 uint64_t offset, uint32_t level,
321 struct virtio_gpu_box *box,
322 struct virtio_gpu_object_array *objs,
323 struct virtio_gpu_fence *fence);
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);
337 /* virtio_gpu_display.c */
338 int virtio_gpu_framebuffer_init(struct drm_device *dev,
339 struct virtio_gpu_framebuffer *vgfb,
340 const struct drm_mode_fb_cmd2 *mode_cmd,
341 struct drm_gem_object *obj);
342 void virtio_gpu_modeset_init(struct virtio_gpu_device *vgdev);
343 void virtio_gpu_modeset_fini(struct virtio_gpu_device *vgdev);
345 /* virtio_gpu_plane.c */
346 uint32_t virtio_gpu_translate_format(uint32_t drm_fourcc);
347 struct drm_plane *virtio_gpu_plane_init(struct virtio_gpu_device *vgdev,
348 enum drm_plane_type type,
351 /* virtio_gpu_fence.c */
352 bool virtio_fence_signaled(struct dma_fence *f);
353 struct virtio_gpu_fence *virtio_gpu_fence_alloc(
354 struct virtio_gpu_device *vgdev);
355 void virtio_gpu_fence_emit(struct virtio_gpu_device *vgdev,
356 struct virtio_gpu_ctrl_hdr *cmd_hdr,
357 struct virtio_gpu_fence *fence);
358 void virtio_gpu_fence_event_process(struct virtio_gpu_device *vdev,
361 /* virtio_gpu_object */
362 struct drm_gem_object *virtio_gpu_create_object(struct drm_device *dev,
364 int virtio_gpu_object_create(struct virtio_gpu_device *vgdev,
365 struct virtio_gpu_object_params *params,
366 struct virtio_gpu_object **bo_ptr,
367 struct virtio_gpu_fence *fence);
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);
374 static inline u64 virtio_gpu_object_mmap_offset(struct virtio_gpu_object *bo)
376 return drm_vma_node_offset_addr(&bo->base.base.vma_node);
380 int virtio_gpu_debugfs_init(struct drm_minor *minor);