tjh.dev
Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
kernel
os
linux
1/*
2 * Copyright (C) 2015 Red Hat, Inc.
3 * All Rights Reserved.
4 *
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:
12 *
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.
16 *
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.
24 */
25
26#ifndef VIRTIO_DRV_H
27#define VIRTIO_DRV_H
28
29#include <linux/virtio.h>
30#include <linux/virtio_ids.h>
31#include <linux/virtio_config.h>
32#include <linux/virtio_gpu.h>
33
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>
41#include <drm/virtgpu_drm.h>
42
43#define DRIVER_NAME "virtio_gpu"
44#define DRIVER_DESC "virtio GPU"
45#define DRIVER_DATE "0"
46
47#define DRIVER_MAJOR 0
48#define DRIVER_MINOR 1
49#define DRIVER_PATCHLEVEL 0
50
51struct virtio_gpu_object_params {
52 uint32_t format;
53 uint32_t width;
54 uint32_t height;
55 unsigned long size;
56 bool dumb;
57 /* 3d */
58 bool virgl;
59 uint32_t target;
60 uint32_t bind;
61 uint32_t depth;
62 uint32_t array_size;
63 uint32_t last_level;
64 uint32_t nr_samples;
65 uint32_t flags;
66};
67
68struct virtio_gpu_object {
69 struct drm_gem_shmem_object base;
70 uint32_t hw_res_handle;
71
72 struct sg_table *pages;
73 uint32_t mapped;
74 bool dumb;
75 bool created;
76};
77#define gem_to_virtio_gpu_obj(gobj) \
78 container_of((gobj), struct virtio_gpu_object, base.base)
79
80struct virtio_gpu_object_array {
81 struct ww_acquire_ctx ticket;
82 struct list_head next;
83 u32 nents, total;
84 struct drm_gem_object *objs[];
85};
86
87struct virtio_gpu_vbuffer;
88struct virtio_gpu_device;
89
90typedef void (*virtio_gpu_resp_cb)(struct virtio_gpu_device *vgdev,
91 struct virtio_gpu_vbuffer *vbuf);
92
93struct virtio_gpu_fence_driver {
94 atomic64_t last_seq;
95 uint64_t sync_seq;
96 uint64_t context;
97 struct list_head fences;
98 spinlock_t lock;
99};
100
101struct virtio_gpu_fence {
102 struct dma_fence f;
103 struct virtio_gpu_fence_driver *drv;
104 struct list_head node;
105};
106
107struct virtio_gpu_vbuffer {
108 char *buf;
109 int size;
110
111 void *data_buf;
112 uint32_t data_size;
113
114 char *resp_buf;
115 int resp_size;
116 virtio_gpu_resp_cb resp_cb;
117
118 struct virtio_gpu_object_array *objs;
119 struct list_head list;
120};
121
122struct virtio_gpu_output {
123 int index;
124 struct drm_crtc crtc;
125 struct drm_connector conn;
126 struct drm_encoder enc;
127 struct virtio_gpu_display_one info;
128 struct virtio_gpu_update_cursor cursor;
129 struct edid *edid;
130 int cur_x;
131 int cur_y;
132 bool enabled;
133};
134#define drm_crtc_to_virtio_gpu_output(x) \
135 container_of(x, struct virtio_gpu_output, crtc)
136
137struct virtio_gpu_framebuffer {
138 struct drm_framebuffer base;
139 struct virtio_gpu_fence *fence;
140};
141#define to_virtio_gpu_framebuffer(x) \
142 container_of(x, struct virtio_gpu_framebuffer, base)
143
144struct virtio_gpu_queue {
145 struct virtqueue *vq;
146 spinlock_t qlock;
147 wait_queue_head_t ack_queue;
148 struct work_struct dequeue_work;
149};
150
151struct virtio_gpu_drv_capset {
152 uint32_t id;
153 uint32_t max_version;
154 uint32_t max_size;
155};
156
157struct virtio_gpu_drv_cap_cache {
158 struct list_head head;
159 void *caps_cache;
160 uint32_t id;
161 uint32_t version;
162 uint32_t size;
163 atomic_t is_valid;
164};
165
166struct virtio_gpu_device {
167 struct device *dev;
168 struct drm_device *ddev;
169
170 struct virtio_device *vdev;
171
172 struct virtio_gpu_output outputs[VIRTIO_GPU_MAX_SCANOUTS];
173 uint32_t num_scanouts;
174
175 struct virtio_gpu_queue ctrlq;
176 struct virtio_gpu_queue cursorq;
177 struct kmem_cache *vbufs;
178 bool vqs_ready;
179
180 bool disable_notify;
181 bool pending_notify;
182
183 struct ida resource_ida;
184
185 wait_queue_head_t resp_wq;
186 /* current display info */
187 spinlock_t display_info_lock;
188 bool display_info_pending;
189
190 struct virtio_gpu_fence_driver fence_drv;
191
192 struct ida ctx_id_ida;
193
194 bool has_virgl_3d;
195 bool has_edid;
196
197 struct work_struct config_changed_work;
198
199 struct work_struct obj_free_work;
200 spinlock_t obj_free_lock;
201 struct list_head obj_free_list;
202
203 struct virtio_gpu_drv_capset *capsets;
204 uint32_t num_capsets;
205 struct list_head cap_cache;
206};
207
208struct virtio_gpu_fpriv {
209 uint32_t ctx_id;
210};
211
212/* virtio_ioctl.c */
213#define DRM_VIRTIO_NUM_IOCTLS 10
214extern struct drm_ioctl_desc virtio_gpu_ioctls[DRM_VIRTIO_NUM_IOCTLS];
215
216/* virtio_kms.c */
217int virtio_gpu_init(struct drm_device *dev);
218void virtio_gpu_deinit(struct drm_device *dev);
219int virtio_gpu_driver_open(struct drm_device *dev, struct drm_file *file);
220void virtio_gpu_driver_postclose(struct drm_device *dev, struct drm_file *file);
221
222/* virtio_gem.c */
223void virtio_gpu_gem_free_object(struct drm_gem_object *gem_obj);
224int virtio_gpu_gem_init(struct virtio_gpu_device *vgdev);
225void virtio_gpu_gem_fini(struct virtio_gpu_device *vgdev);
226int virtio_gpu_gem_create(struct drm_file *file,
227 struct drm_device *dev,
228 struct virtio_gpu_object_params *params,
229 struct drm_gem_object **obj_p,
230 uint32_t *handle_p);
231int virtio_gpu_gem_object_open(struct drm_gem_object *obj,
232 struct drm_file *file);
233void virtio_gpu_gem_object_close(struct drm_gem_object *obj,
234 struct drm_file *file);
235int virtio_gpu_mode_dumb_create(struct drm_file *file_priv,
236 struct drm_device *dev,
237 struct drm_mode_create_dumb *args);
238int virtio_gpu_mode_dumb_mmap(struct drm_file *file_priv,
239 struct drm_device *dev,
240 uint32_t handle, uint64_t *offset_p);
241
242struct virtio_gpu_object_array *virtio_gpu_array_alloc(u32 nents);
243struct virtio_gpu_object_array*
244virtio_gpu_array_from_handles(struct drm_file *drm_file, u32 *handles, u32 nents);
245void virtio_gpu_array_add_obj(struct virtio_gpu_object_array *objs,
246 struct drm_gem_object *obj);
247int virtio_gpu_array_lock_resv(struct virtio_gpu_object_array *objs);
248void virtio_gpu_array_unlock_resv(struct virtio_gpu_object_array *objs);
249void virtio_gpu_array_add_fence(struct virtio_gpu_object_array *objs,
250 struct dma_fence *fence);
251void virtio_gpu_array_put_free(struct virtio_gpu_object_array *objs);
252void virtio_gpu_array_put_free_delayed(struct virtio_gpu_device *vgdev,
253 struct virtio_gpu_object_array *objs);
254void virtio_gpu_array_put_free_work(struct work_struct *work);
255
256/* virtio vg */
257int virtio_gpu_alloc_vbufs(struct virtio_gpu_device *vgdev);
258void virtio_gpu_free_vbufs(struct virtio_gpu_device *vgdev);
259void virtio_gpu_cmd_create_resource(struct virtio_gpu_device *vgdev,
260 struct virtio_gpu_object *bo,
261 struct virtio_gpu_object_params *params,
262 struct virtio_gpu_object_array *objs,
263 struct virtio_gpu_fence *fence);
264void virtio_gpu_cmd_unref_resource(struct virtio_gpu_device *vgdev,
265 uint32_t resource_id);
266void virtio_gpu_cmd_transfer_to_host_2d(struct virtio_gpu_device *vgdev,
267 uint64_t offset,
268 uint32_t width, uint32_t height,
269 uint32_t x, uint32_t y,
270 struct virtio_gpu_object_array *objs,
271 struct virtio_gpu_fence *fence);
272void virtio_gpu_cmd_resource_flush(struct virtio_gpu_device *vgdev,
273 uint32_t resource_id,
274 uint32_t x, uint32_t y,
275 uint32_t width, uint32_t height);
276void virtio_gpu_cmd_set_scanout(struct virtio_gpu_device *vgdev,
277 uint32_t scanout_id, uint32_t resource_id,
278 uint32_t width, uint32_t height,
279 uint32_t x, uint32_t y);
280int virtio_gpu_object_attach(struct virtio_gpu_device *vgdev,
281 struct virtio_gpu_object *obj,
282 struct virtio_gpu_fence *fence);
283void virtio_gpu_object_detach(struct virtio_gpu_device *vgdev,
284 struct virtio_gpu_object *obj);
285int virtio_gpu_attach_status_page(struct virtio_gpu_device *vgdev);
286int virtio_gpu_detach_status_page(struct virtio_gpu_device *vgdev);
287void virtio_gpu_cursor_ping(struct virtio_gpu_device *vgdev,
288 struct virtio_gpu_output *output);
289int virtio_gpu_cmd_get_display_info(struct virtio_gpu_device *vgdev);
290int virtio_gpu_cmd_get_capset_info(struct virtio_gpu_device *vgdev, int idx);
291int virtio_gpu_cmd_get_capset(struct virtio_gpu_device *vgdev,
292 int idx, int version,
293 struct virtio_gpu_drv_cap_cache **cache_p);
294int virtio_gpu_cmd_get_edids(struct virtio_gpu_device *vgdev);
295void virtio_gpu_cmd_context_create(struct virtio_gpu_device *vgdev, uint32_t id,
296 uint32_t nlen, const char *name);
297void virtio_gpu_cmd_context_destroy(struct virtio_gpu_device *vgdev,
298 uint32_t id);
299void virtio_gpu_cmd_context_attach_resource(struct virtio_gpu_device *vgdev,
300 uint32_t ctx_id,
301 struct virtio_gpu_object_array *objs);
302void virtio_gpu_cmd_context_detach_resource(struct virtio_gpu_device *vgdev,
303 uint32_t ctx_id,
304 struct virtio_gpu_object_array *objs);
305void virtio_gpu_cmd_submit(struct virtio_gpu_device *vgdev,
306 void *data, uint32_t data_size,
307 uint32_t ctx_id,
308 struct virtio_gpu_object_array *objs,
309 struct virtio_gpu_fence *fence);
310void virtio_gpu_cmd_transfer_from_host_3d(struct virtio_gpu_device *vgdev,
311 uint32_t ctx_id,
312 uint64_t offset, uint32_t level,
313 struct drm_virtgpu_3d_box *box,
314 struct virtio_gpu_object_array *objs,
315 struct virtio_gpu_fence *fence);
316void virtio_gpu_cmd_transfer_to_host_3d(struct virtio_gpu_device *vgdev,
317 uint32_t ctx_id,
318 uint64_t offset, uint32_t level,
319 struct drm_virtgpu_3d_box *box,
320 struct virtio_gpu_object_array *objs,
321 struct virtio_gpu_fence *fence);
322void
323virtio_gpu_cmd_resource_create_3d(struct virtio_gpu_device *vgdev,
324 struct virtio_gpu_object *bo,
325 struct virtio_gpu_object_params *params,
326 struct virtio_gpu_object_array *objs,
327 struct virtio_gpu_fence *fence);
328void virtio_gpu_ctrl_ack(struct virtqueue *vq);
329void virtio_gpu_cursor_ack(struct virtqueue *vq);
330void virtio_gpu_fence_ack(struct virtqueue *vq);
331void virtio_gpu_dequeue_ctrl_func(struct work_struct *work);
332void virtio_gpu_dequeue_cursor_func(struct work_struct *work);
333void virtio_gpu_dequeue_fence_func(struct work_struct *work);
334
335void virtio_gpu_disable_notify(struct virtio_gpu_device *vgdev);
336void virtio_gpu_enable_notify(struct virtio_gpu_device *vgdev);
337
338/* virtio_gpu_display.c */
339void virtio_gpu_modeset_init(struct virtio_gpu_device *vgdev);
340void virtio_gpu_modeset_fini(struct virtio_gpu_device *vgdev);
341
342/* virtio_gpu_plane.c */
343uint32_t virtio_gpu_translate_format(uint32_t drm_fourcc);
344struct drm_plane *virtio_gpu_plane_init(struct virtio_gpu_device *vgdev,
345 enum drm_plane_type type,
346 int index);
347
348/* virtio_gpu_fence.c */
349struct virtio_gpu_fence *virtio_gpu_fence_alloc(
350 struct virtio_gpu_device *vgdev);
351void virtio_gpu_fence_emit(struct virtio_gpu_device *vgdev,
352 struct virtio_gpu_ctrl_hdr *cmd_hdr,
353 struct virtio_gpu_fence *fence);
354void virtio_gpu_fence_event_process(struct virtio_gpu_device *vdev,
355 u64 last_seq);
356
357/* virtio_gpu_object */
358struct drm_gem_object *virtio_gpu_create_object(struct drm_device *dev,
359 size_t size);
360int virtio_gpu_object_create(struct virtio_gpu_device *vgdev,
361 struct virtio_gpu_object_params *params,
362 struct virtio_gpu_object **bo_ptr,
363 struct virtio_gpu_fence *fence);
364/* virtgpu_prime.c */
365struct drm_gem_object *virtgpu_gem_prime_import_sg_table(
366 struct drm_device *dev, struct dma_buf_attachment *attach,
367 struct sg_table *sgt);
368
369/* virgl debugfs */
370int virtio_gpu_debugfs_init(struct drm_minor *minor);
371
372#endif