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>
35 #include <drm/drm_gem.h>
36 #include <drm/drm_atomic.h>
37 #include <drm/drm_encoder.h>
38 #include <drm/drm_fb_helper.h>
39 #include <drm/drm_probe_helper.h>
40 #include <drm/ttm/ttm_bo_api.h>
41 #include <drm/ttm/ttm_bo_driver.h>
42 #include <drm/ttm/ttm_placement.h>
43 #include <drm/ttm/ttm_module.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 struct virtio_gpu_object_params {
70 struct virtio_gpu_object {
71 struct drm_gem_object gem_base;
72 uint32_t hw_res_handle;
74 struct sg_table *pages;
78 struct ttm_place placement_code;
79 struct ttm_placement placement;
80 struct ttm_buffer_object tbo;
81 struct ttm_bo_kmap_obj kmap;
84 #define gem_to_virtio_gpu_obj(gobj) \
85 container_of((gobj), struct virtio_gpu_object, gem_base)
87 struct virtio_gpu_vbuffer;
88 struct virtio_gpu_device;
90 typedef void (*virtio_gpu_resp_cb)(struct virtio_gpu_device *vgdev,
91 struct virtio_gpu_vbuffer *vbuf);
93 struct virtio_gpu_fence_driver {
97 struct list_head fences;
101 struct virtio_gpu_fence {
103 struct virtio_gpu_fence_driver *drv;
104 struct list_head node;
106 #define to_virtio_fence(x) \
107 container_of(x, struct virtio_gpu_fence, f)
109 struct virtio_gpu_vbuffer {
119 virtio_gpu_resp_cb resp_cb;
121 struct list_head list;
124 struct virtio_gpu_output {
126 struct drm_crtc crtc;
127 struct drm_connector conn;
128 struct drm_encoder enc;
129 struct virtio_gpu_display_one info;
130 struct virtio_gpu_update_cursor cursor;
136 #define drm_crtc_to_virtio_gpu_output(x) \
137 container_of(x, struct virtio_gpu_output, crtc)
138 #define drm_connector_to_virtio_gpu_output(x) \
139 container_of(x, struct virtio_gpu_output, conn)
140 #define drm_encoder_to_virtio_gpu_output(x) \
141 container_of(x, struct virtio_gpu_output, enc)
143 struct virtio_gpu_framebuffer {
144 struct drm_framebuffer base;
145 int x1, y1, x2, y2; /* dirty rect */
146 spinlock_t dirty_lock;
147 uint32_t hw_res_handle;
148 struct virtio_gpu_fence *fence;
150 #define to_virtio_gpu_framebuffer(x) \
151 container_of(x, struct virtio_gpu_framebuffer, base)
153 struct virtio_gpu_mman {
154 struct ttm_bo_device bdev;
157 struct virtio_gpu_queue {
158 struct virtqueue *vq;
160 wait_queue_head_t ack_queue;
161 struct work_struct dequeue_work;
164 struct virtio_gpu_drv_capset {
166 uint32_t max_version;
170 struct virtio_gpu_drv_cap_cache {
171 struct list_head head;
179 struct virtio_gpu_device {
181 struct drm_device *ddev;
183 struct virtio_device *vdev;
185 struct virtio_gpu_mman mman;
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;
195 struct ida resource_ida;
197 wait_queue_head_t resp_wq;
198 /* current display info */
199 spinlock_t display_info_lock;
200 bool display_info_pending;
202 struct virtio_gpu_fence_driver fence_drv;
204 struct ida ctx_id_ida;
209 struct work_struct config_changed_work;
211 struct virtio_gpu_drv_capset *capsets;
212 uint32_t num_capsets;
213 struct list_head cap_cache;
216 struct virtio_gpu_fpriv {
221 #define DRM_VIRTIO_NUM_IOCTLS 10
222 extern struct drm_ioctl_desc virtio_gpu_ioctls[DRM_VIRTIO_NUM_IOCTLS];
223 int virtio_gpu_object_list_validate(struct ww_acquire_ctx *ticket,
224 struct list_head *head);
225 void virtio_gpu_unref_list(struct list_head *head);
228 int virtio_gpu_init(struct drm_device *dev);
229 void virtio_gpu_deinit(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);
234 void virtio_gpu_gem_free_object(struct drm_gem_object *gem_obj);
235 int virtio_gpu_gem_init(struct virtio_gpu_device *vgdev);
236 void virtio_gpu_gem_fini(struct virtio_gpu_device *vgdev);
237 int virtio_gpu_gem_create(struct drm_file *file,
238 struct drm_device *dev,
239 struct virtio_gpu_object_params *params,
240 struct drm_gem_object **obj_p,
242 int virtio_gpu_gem_object_open(struct drm_gem_object *obj,
243 struct drm_file *file);
244 void virtio_gpu_gem_object_close(struct drm_gem_object *obj,
245 struct drm_file *file);
246 struct virtio_gpu_object*
247 virtio_gpu_alloc_object(struct drm_device *dev,
248 struct virtio_gpu_object_params *params,
249 struct virtio_gpu_fence *fence);
250 int virtio_gpu_mode_dumb_create(struct drm_file *file_priv,
251 struct drm_device *dev,
252 struct drm_mode_create_dumb *args);
253 int virtio_gpu_mode_dumb_mmap(struct drm_file *file_priv,
254 struct drm_device *dev,
255 uint32_t handle, uint64_t *offset_p);
258 int virtio_gpu_surface_dirty(struct virtio_gpu_framebuffer *qfb,
259 struct drm_clip_rect *clips,
260 unsigned int num_clips);
262 int virtio_gpu_alloc_vbufs(struct virtio_gpu_device *vgdev);
263 void virtio_gpu_free_vbufs(struct virtio_gpu_device *vgdev);
264 void virtio_gpu_cmd_create_resource(struct virtio_gpu_device *vgdev,
265 struct virtio_gpu_object *bo,
266 struct virtio_gpu_object_params *params,
267 struct virtio_gpu_fence *fence);
268 void virtio_gpu_cmd_unref_resource(struct virtio_gpu_device *vgdev,
269 uint32_t resource_id);
270 void virtio_gpu_cmd_transfer_to_host_2d(struct virtio_gpu_device *vgdev,
271 struct virtio_gpu_object *bo,
273 __le32 width, __le32 height,
275 struct virtio_gpu_fence *fence);
276 void virtio_gpu_cmd_resource_flush(struct virtio_gpu_device *vgdev,
277 uint32_t resource_id,
278 uint32_t x, uint32_t y,
279 uint32_t width, uint32_t height);
280 void virtio_gpu_cmd_set_scanout(struct virtio_gpu_device *vgdev,
281 uint32_t scanout_id, uint32_t resource_id,
282 uint32_t width, uint32_t height,
283 uint32_t x, uint32_t y);
284 int virtio_gpu_object_attach(struct virtio_gpu_device *vgdev,
285 struct virtio_gpu_object *obj,
286 struct virtio_gpu_fence *fence);
287 void virtio_gpu_object_detach(struct virtio_gpu_device *vgdev,
288 struct virtio_gpu_object *obj);
289 int virtio_gpu_attach_status_page(struct virtio_gpu_device *vgdev);
290 int virtio_gpu_detach_status_page(struct virtio_gpu_device *vgdev);
291 void virtio_gpu_cursor_ping(struct virtio_gpu_device *vgdev,
292 struct virtio_gpu_output *output);
293 int virtio_gpu_cmd_get_display_info(struct virtio_gpu_device *vgdev);
294 int virtio_gpu_cmd_get_capset_info(struct virtio_gpu_device *vgdev, int idx);
295 int virtio_gpu_cmd_get_capset(struct virtio_gpu_device *vgdev,
296 int idx, int version,
297 struct virtio_gpu_drv_cap_cache **cache_p);
298 int virtio_gpu_cmd_get_edids(struct virtio_gpu_device *vgdev);
299 void virtio_gpu_cmd_context_create(struct virtio_gpu_device *vgdev, uint32_t id,
300 uint32_t nlen, const char *name);
301 void virtio_gpu_cmd_context_destroy(struct virtio_gpu_device *vgdev,
303 void virtio_gpu_cmd_context_attach_resource(struct virtio_gpu_device *vgdev,
305 uint32_t resource_id);
306 void virtio_gpu_cmd_context_detach_resource(struct virtio_gpu_device *vgdev,
308 uint32_t resource_id);
309 void virtio_gpu_cmd_submit(struct virtio_gpu_device *vgdev,
310 void *data, uint32_t data_size,
311 uint32_t ctx_id, struct virtio_gpu_fence *fence);
312 void virtio_gpu_cmd_transfer_from_host_3d(struct virtio_gpu_device *vgdev,
313 uint32_t resource_id, uint32_t ctx_id,
314 uint64_t offset, uint32_t level,
315 struct virtio_gpu_box *box,
316 struct virtio_gpu_fence *fence);
317 void virtio_gpu_cmd_transfer_to_host_3d(struct virtio_gpu_device *vgdev,
318 struct virtio_gpu_object *bo,
320 uint64_t offset, uint32_t level,
321 struct virtio_gpu_box *box,
322 struct virtio_gpu_fence *fence);
324 virtio_gpu_cmd_resource_create_3d(struct virtio_gpu_device *vgdev,
325 struct virtio_gpu_object *bo,
326 struct virtio_gpu_object_params *params,
327 struct virtio_gpu_fence *fence);
328 void virtio_gpu_ctrl_ack(struct virtqueue *vq);
329 void virtio_gpu_cursor_ack(struct virtqueue *vq);
330 void virtio_gpu_fence_ack(struct virtqueue *vq);
331 void virtio_gpu_dequeue_ctrl_func(struct work_struct *work);
332 void virtio_gpu_dequeue_cursor_func(struct work_struct *work);
333 void virtio_gpu_dequeue_fence_func(struct work_struct *work);
335 /* virtio_gpu_display.c */
336 int virtio_gpu_framebuffer_init(struct drm_device *dev,
337 struct virtio_gpu_framebuffer *vgfb,
338 const struct drm_mode_fb_cmd2 *mode_cmd,
339 struct drm_gem_object *obj);
340 void virtio_gpu_modeset_init(struct virtio_gpu_device *vgdev);
341 void virtio_gpu_modeset_fini(struct virtio_gpu_device *vgdev);
343 /* virtio_gpu_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,
349 /* virtio_gpu_ttm.c */
350 int virtio_gpu_ttm_init(struct virtio_gpu_device *vgdev);
351 void virtio_gpu_ttm_fini(struct virtio_gpu_device *vgdev);
352 int virtio_gpu_mmap(struct file *filp, struct vm_area_struct *vma);
354 /* virtio_gpu_fence.c */
355 bool virtio_fence_signaled(struct dma_fence *f);
356 struct virtio_gpu_fence *virtio_gpu_fence_alloc(
357 struct virtio_gpu_device *vgdev);
358 int virtio_gpu_fence_emit(struct virtio_gpu_device *vgdev,
359 struct virtio_gpu_ctrl_hdr *cmd_hdr,
360 struct virtio_gpu_fence *fence);
361 void virtio_gpu_fence_event_process(struct virtio_gpu_device *vdev,
364 /* virtio_gpu_object */
365 int virtio_gpu_object_create(struct virtio_gpu_device *vgdev,
366 struct virtio_gpu_object_params *params,
367 struct virtio_gpu_object **bo_ptr,
368 struct virtio_gpu_fence *fence);
369 void virtio_gpu_object_kunmap(struct virtio_gpu_object *bo);
370 int virtio_gpu_object_kmap(struct virtio_gpu_object *bo);
371 int virtio_gpu_object_get_sg_table(struct virtio_gpu_device *qdev,
372 struct virtio_gpu_object *bo);
373 void virtio_gpu_object_free_sg_table(struct virtio_gpu_object *bo);
374 int virtio_gpu_object_wait(struct virtio_gpu_object *bo, bool no_wait);
376 /* virtgpu_prime.c */
377 struct sg_table *virtgpu_gem_prime_get_sg_table(struct drm_gem_object *obj);
378 void *virtgpu_gem_prime_vmap(struct drm_gem_object *obj);
379 void virtgpu_gem_prime_vunmap(struct drm_gem_object *obj, void *vaddr);
380 int virtgpu_gem_prime_mmap(struct drm_gem_object *obj,
381 struct vm_area_struct *vma);
383 static inline struct virtio_gpu_object*
384 virtio_gpu_object_ref(struct virtio_gpu_object *bo)
386 ttm_bo_get(&bo->tbo);
390 static inline void virtio_gpu_object_unref(struct virtio_gpu_object **bo)
392 struct ttm_buffer_object *tbo;
401 static inline u64 virtio_gpu_object_mmap_offset(struct virtio_gpu_object *bo)
403 return drm_vma_node_offset_addr(&bo->tbo.vma_node);
406 static inline int virtio_gpu_object_reserve(struct virtio_gpu_object *bo,
411 r = ttm_bo_reserve(&bo->tbo, true, no_wait, NULL);
412 if (unlikely(r != 0)) {
413 if (r != -ERESTARTSYS) {
414 struct virtio_gpu_device *qdev =
415 bo->gem_base.dev->dev_private;
416 dev_err(qdev->dev, "%p reserve failed\n", bo);
423 static inline void virtio_gpu_object_unreserve(struct virtio_gpu_object *bo)
425 ttm_bo_unreserve(&bo->tbo);
429 int virtio_gpu_debugfs_init(struct drm_minor *minor);