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_crtc_helper.h>
38 #include <drm/drm_encoder.h>
39 #include <drm/drm_fb_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 0
51 #define DRIVER_PATCHLEVEL 1
53 /* virtgpu_drm_bus.c */
54 int drm_virtio_init(struct drm_driver *driver, struct virtio_device *vdev);
56 struct virtio_gpu_object {
57 struct drm_gem_object gem_base;
58 uint32_t hw_res_handle;
60 struct sg_table *pages;
64 struct ttm_place placement_code;
65 struct ttm_placement placement;
66 struct ttm_buffer_object tbo;
67 struct ttm_bo_kmap_obj kmap;
70 #define gem_to_virtio_gpu_obj(gobj) \
71 container_of((gobj), struct virtio_gpu_object, gem_base)
73 struct virtio_gpu_vbuffer;
74 struct virtio_gpu_device;
76 typedef void (*virtio_gpu_resp_cb)(struct virtio_gpu_device *vgdev,
77 struct virtio_gpu_vbuffer *vbuf);
79 struct virtio_gpu_fence_driver {
83 struct list_head fences;
87 struct virtio_gpu_fence {
89 struct virtio_gpu_fence_driver *drv;
90 struct list_head node;
93 #define to_virtio_fence(x) \
94 container_of(x, struct virtio_gpu_fence, f)
96 struct virtio_gpu_vbuffer {
106 virtio_gpu_resp_cb resp_cb;
108 struct list_head list;
111 struct virtio_gpu_output {
113 struct drm_crtc crtc;
114 struct drm_connector conn;
115 struct drm_encoder enc;
116 struct virtio_gpu_display_one info;
117 struct virtio_gpu_update_cursor cursor;
122 #define drm_crtc_to_virtio_gpu_output(x) \
123 container_of(x, struct virtio_gpu_output, crtc)
124 #define drm_connector_to_virtio_gpu_output(x) \
125 container_of(x, struct virtio_gpu_output, conn)
126 #define drm_encoder_to_virtio_gpu_output(x) \
127 container_of(x, struct virtio_gpu_output, enc)
129 struct virtio_gpu_framebuffer {
130 struct drm_framebuffer base;
131 int x1, y1, x2, y2; /* dirty rect */
132 spinlock_t dirty_lock;
133 uint32_t hw_res_handle;
135 #define to_virtio_gpu_framebuffer(x) \
136 container_of(x, struct virtio_gpu_framebuffer, base)
138 struct virtio_gpu_fbdev {
139 struct drm_fb_helper helper;
140 struct virtio_gpu_framebuffer vgfb;
141 struct virtio_gpu_device *vgdev;
142 struct delayed_work work;
145 struct virtio_gpu_mman {
146 struct ttm_bo_device bdev;
149 struct virtio_gpu_fbdev;
151 struct virtio_gpu_queue {
152 struct virtqueue *vq;
154 wait_queue_head_t ack_queue;
155 struct work_struct dequeue_work;
158 struct virtio_gpu_drv_capset {
160 uint32_t max_version;
164 struct virtio_gpu_drv_cap_cache {
165 struct list_head head;
173 struct virtio_gpu_device {
175 struct drm_device *ddev;
177 struct virtio_device *vdev;
179 struct virtio_gpu_mman mman;
181 /* pointer to fbdev info structure */
182 struct virtio_gpu_fbdev *vgfbdev;
183 struct virtio_gpu_output outputs[VIRTIO_GPU_MAX_SCANOUTS];
184 uint32_t num_scanouts;
186 struct virtio_gpu_queue ctrlq;
187 struct virtio_gpu_queue cursorq;
188 struct kmem_cache *vbufs;
191 struct ida resource_ida;
193 wait_queue_head_t resp_wq;
194 /* current display info */
195 spinlock_t display_info_lock;
196 bool display_info_pending;
198 struct virtio_gpu_fence_driver fence_drv;
200 struct ida ctx_id_ida;
204 struct work_struct config_changed_work;
206 struct virtio_gpu_drv_capset *capsets;
207 uint32_t num_capsets;
208 struct list_head cap_cache;
211 struct virtio_gpu_fpriv {
216 #define DRM_VIRTIO_NUM_IOCTLS 10
217 extern struct drm_ioctl_desc virtio_gpu_ioctls[DRM_VIRTIO_NUM_IOCTLS];
220 int virtio_gpu_driver_load(struct drm_device *dev, unsigned long flags);
221 void virtio_gpu_driver_unload(struct drm_device *dev);
222 int virtio_gpu_driver_open(struct drm_device *dev, struct drm_file *file);
223 void virtio_gpu_driver_postclose(struct drm_device *dev, struct drm_file *file);
226 void virtio_gpu_gem_free_object(struct drm_gem_object *gem_obj);
227 int virtio_gpu_gem_init(struct virtio_gpu_device *vgdev);
228 void virtio_gpu_gem_fini(struct virtio_gpu_device *vgdev);
229 int virtio_gpu_gem_create(struct drm_file *file,
230 struct drm_device *dev,
232 struct drm_gem_object **obj_p,
234 int virtio_gpu_gem_object_open(struct drm_gem_object *obj,
235 struct drm_file *file);
236 void virtio_gpu_gem_object_close(struct drm_gem_object *obj,
237 struct drm_file *file);
238 struct virtio_gpu_object *virtio_gpu_alloc_object(struct drm_device *dev,
239 size_t size, bool kernel,
241 int virtio_gpu_mode_dumb_create(struct drm_file *file_priv,
242 struct drm_device *dev,
243 struct drm_mode_create_dumb *args);
244 int virtio_gpu_mode_dumb_mmap(struct drm_file *file_priv,
245 struct drm_device *dev,
246 uint32_t handle, uint64_t *offset_p);
249 #define VIRTIO_GPUFB_CONN_LIMIT 1
250 int virtio_gpu_fbdev_init(struct virtio_gpu_device *vgdev);
251 void virtio_gpu_fbdev_fini(struct virtio_gpu_device *vgdev);
252 int virtio_gpu_surface_dirty(struct virtio_gpu_framebuffer *qfb,
253 struct drm_clip_rect *clips,
254 unsigned int num_clips);
256 int virtio_gpu_alloc_vbufs(struct virtio_gpu_device *vgdev);
257 void virtio_gpu_free_vbufs(struct virtio_gpu_device *vgdev);
258 void virtio_gpu_cmd_create_resource(struct virtio_gpu_device *vgdev,
259 struct virtio_gpu_object *bo,
263 void virtio_gpu_cmd_unref_resource(struct virtio_gpu_device *vgdev,
264 uint32_t resource_id);
265 void virtio_gpu_cmd_transfer_to_host_2d(struct virtio_gpu_device *vgdev,
266 struct virtio_gpu_object *bo,
268 __le32 width, __le32 height,
270 struct virtio_gpu_fence **fence);
271 void virtio_gpu_cmd_resource_flush(struct virtio_gpu_device *vgdev,
272 uint32_t resource_id,
273 uint32_t x, uint32_t y,
274 uint32_t width, uint32_t height);
275 void virtio_gpu_cmd_set_scanout(struct virtio_gpu_device *vgdev,
276 uint32_t scanout_id, uint32_t resource_id,
277 uint32_t width, uint32_t height,
278 uint32_t x, uint32_t y);
279 int virtio_gpu_object_attach(struct virtio_gpu_device *vgdev,
280 struct virtio_gpu_object *obj,
281 struct virtio_gpu_fence **fence);
282 void virtio_gpu_object_detach(struct virtio_gpu_device *vgdev,
283 struct virtio_gpu_object *obj);
284 int virtio_gpu_attach_status_page(struct virtio_gpu_device *vgdev);
285 int virtio_gpu_detach_status_page(struct virtio_gpu_device *vgdev);
286 void virtio_gpu_cursor_ping(struct virtio_gpu_device *vgdev,
287 struct virtio_gpu_output *output);
288 int virtio_gpu_cmd_get_display_info(struct virtio_gpu_device *vgdev);
289 int virtio_gpu_cmd_get_capset_info(struct virtio_gpu_device *vgdev, int idx);
290 int virtio_gpu_cmd_get_capset(struct virtio_gpu_device *vgdev,
291 int idx, int version,
292 struct virtio_gpu_drv_cap_cache **cache_p);
293 void virtio_gpu_cmd_context_create(struct virtio_gpu_device *vgdev, uint32_t id,
294 uint32_t nlen, const char *name);
295 void virtio_gpu_cmd_context_destroy(struct virtio_gpu_device *vgdev,
297 void virtio_gpu_cmd_context_attach_resource(struct virtio_gpu_device *vgdev,
299 uint32_t resource_id);
300 void virtio_gpu_cmd_context_detach_resource(struct virtio_gpu_device *vgdev,
302 uint32_t resource_id);
303 void virtio_gpu_cmd_submit(struct virtio_gpu_device *vgdev,
304 void *data, uint32_t data_size,
305 uint32_t ctx_id, struct virtio_gpu_fence **fence);
306 void virtio_gpu_cmd_transfer_from_host_3d(struct virtio_gpu_device *vgdev,
307 uint32_t resource_id, uint32_t ctx_id,
308 uint64_t offset, uint32_t level,
309 struct virtio_gpu_box *box,
310 struct virtio_gpu_fence **fence);
311 void virtio_gpu_cmd_transfer_to_host_3d(struct virtio_gpu_device *vgdev,
312 struct virtio_gpu_object *bo,
314 uint64_t offset, uint32_t level,
315 struct virtio_gpu_box *box,
316 struct virtio_gpu_fence **fence);
318 virtio_gpu_cmd_resource_create_3d(struct virtio_gpu_device *vgdev,
319 struct virtio_gpu_object *bo,
320 struct virtio_gpu_resource_create_3d *rc_3d,
321 struct virtio_gpu_fence **fence);
322 void virtio_gpu_ctrl_ack(struct virtqueue *vq);
323 void virtio_gpu_cursor_ack(struct virtqueue *vq);
324 void virtio_gpu_fence_ack(struct virtqueue *vq);
325 void virtio_gpu_dequeue_ctrl_func(struct work_struct *work);
326 void virtio_gpu_dequeue_cursor_func(struct work_struct *work);
327 void virtio_gpu_dequeue_fence_func(struct work_struct *work);
329 /* virtio_gpu_display.c */
330 int virtio_gpu_framebuffer_init(struct drm_device *dev,
331 struct virtio_gpu_framebuffer *vgfb,
332 const struct drm_mode_fb_cmd2 *mode_cmd,
333 struct drm_gem_object *obj);
334 int virtio_gpu_modeset_init(struct virtio_gpu_device *vgdev);
335 void virtio_gpu_modeset_fini(struct virtio_gpu_device *vgdev);
337 /* virtio_gpu_plane.c */
338 uint32_t virtio_gpu_translate_format(uint32_t drm_fourcc);
339 struct drm_plane *virtio_gpu_plane_init(struct virtio_gpu_device *vgdev,
340 enum drm_plane_type type,
343 /* virtio_gpu_ttm.c */
344 int virtio_gpu_ttm_init(struct virtio_gpu_device *vgdev);
345 void virtio_gpu_ttm_fini(struct virtio_gpu_device *vgdev);
346 int virtio_gpu_mmap(struct file *filp, struct vm_area_struct *vma);
348 /* virtio_gpu_fence.c */
349 int virtio_gpu_fence_emit(struct virtio_gpu_device *vgdev,
350 struct virtio_gpu_ctrl_hdr *cmd_hdr,
351 struct virtio_gpu_fence **fence);
352 void virtio_gpu_fence_event_process(struct virtio_gpu_device *vdev,
355 /* virtio_gpu_object */
356 int virtio_gpu_object_create(struct virtio_gpu_device *vgdev,
357 unsigned long size, bool kernel, bool pinned,
358 struct virtio_gpu_object **bo_ptr);
359 void virtio_gpu_object_kunmap(struct virtio_gpu_object *bo);
360 int virtio_gpu_object_kmap(struct virtio_gpu_object *bo);
361 int virtio_gpu_object_get_sg_table(struct virtio_gpu_device *qdev,
362 struct virtio_gpu_object *bo);
363 void virtio_gpu_object_free_sg_table(struct virtio_gpu_object *bo);
364 int virtio_gpu_object_wait(struct virtio_gpu_object *bo, bool no_wait);
366 /* virtgpu_prime.c */
367 int virtgpu_gem_prime_pin(struct drm_gem_object *obj);
368 void virtgpu_gem_prime_unpin(struct drm_gem_object *obj);
369 struct sg_table *virtgpu_gem_prime_get_sg_table(struct drm_gem_object *obj);
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);
373 void *virtgpu_gem_prime_vmap(struct drm_gem_object *obj);
374 void virtgpu_gem_prime_vunmap(struct drm_gem_object *obj, void *vaddr);
375 int virtgpu_gem_prime_mmap(struct drm_gem_object *obj,
376 struct vm_area_struct *vma);
378 static inline struct virtio_gpu_object*
379 virtio_gpu_object_ref(struct virtio_gpu_object *bo)
381 ttm_bo_get(&bo->tbo);
385 static inline void virtio_gpu_object_unref(struct virtio_gpu_object **bo)
387 struct ttm_buffer_object *tbo;
396 static inline u64 virtio_gpu_object_mmap_offset(struct virtio_gpu_object *bo)
398 return drm_vma_node_offset_addr(&bo->tbo.vma_node);
401 static inline int virtio_gpu_object_reserve(struct virtio_gpu_object *bo,
406 r = ttm_bo_reserve(&bo->tbo, true, no_wait, NULL);
407 if (unlikely(r != 0)) {
408 if (r != -ERESTARTSYS) {
409 struct virtio_gpu_device *qdev =
410 bo->gem_base.dev->dev_private;
411 dev_err(qdev->dev, "%p reserve failed\n", bo);
418 static inline void virtio_gpu_object_unreserve(struct virtio_gpu_object *bo)
420 ttm_bo_unreserve(&bo->tbo);
424 int virtio_gpu_debugfs_init(struct drm_minor *minor);