summaryrefslogtreecommitdiff
path: root/drivers/gpu/drm/virtio/virtgpu_drv.h
blob: 5edc22d7a72f16dfb2b076cd265942345439d591 (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
/*
 * Copyright (C) 2015 Red Hat, Inc.
 * All Rights Reserved.
 *
 * Permission is hereby granted, free of charge, to any person obtaining
 * a copy of this software and associated documentation files (the
 * "Software"), to deal in the Software without restriction, including
 * without limitation the rights to use, copy, modify, merge, publish,
 * distribute, sublicense, and/or sell copies of the Software, and to
 * permit persons to whom the Software is furnished to do so, subject to
 * the following conditions:
 *
 * The above copyright notice and this permission notice (including the
 * next paragraph) shall be included in all copies or substantial
 * portions of the Software.
 *
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
 * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
 * IN NO EVENT SHALL THE COPYRIGHT OWNER(S) AND/OR ITS SUPPLIERS BE
 * LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
 * OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
 * WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
 */

#ifndef VIRTIO_DRV_H
#define VIRTIO_DRV_H

#include <linux/virtio.h>
#include <linux/virtio_ids.h>
#include <linux/virtio_config.h>
#include <linux/virtio_gpu.h>

#include <drm/drmP.h>
#include <drm/drm_gem.h>
#include <drm/drm_atomic.h>
#include <drm/drm_crtc_helper.h>
#include <drm/drm_encoder.h>
#include <drm/drm_fb_helper.h>
#include <drm/ttm/ttm_bo_api.h>
#include <drm/ttm/ttm_bo_driver.h>
#include <drm/ttm/ttm_placement.h>
#include <drm/ttm/ttm_module.h>

#define DRIVER_NAME "virtio_gpu"
#define DRIVER_DESC "virtio GPU"
#define DRIVER_DATE "0"

#define DRIVER_MAJOR 0
#define DRIVER_MINOR 0
#define DRIVER_PATCHLEVEL 1

/* virtgpu_drm_bus.c */
int drm_virtio_init(struct drm_driver *driver, struct virtio_device *vdev);

struct virtio_gpu_object {
	struct drm_gem_object gem_base;
	uint32_t hw_res_handle;

	struct sg_table *pages;
	uint32_t mapped;
	void *vmap;
	bool dumb;
	struct ttm_place                placement_code;
	struct ttm_placement		placement;
	struct ttm_buffer_object	tbo;
	struct ttm_bo_kmap_obj		kmap;
	bool created;
};
#define gem_to_virtio_gpu_obj(gobj) \
	container_of((gobj), struct virtio_gpu_object, gem_base)

struct virtio_gpu_vbuffer;
struct virtio_gpu_device;

typedef void (*virtio_gpu_resp_cb)(struct virtio_gpu_device *vgdev,
				   struct virtio_gpu_vbuffer *vbuf);

struct virtio_gpu_fence_driver {
	atomic64_t       last_seq;
	uint64_t         sync_seq;
	uint64_t         context;
	struct list_head fences;
	spinlock_t       lock;
};

struct virtio_gpu_fence {
	struct dma_fence f;
	struct virtio_gpu_fence_driver *drv;
	struct list_head node;
	uint64_t seq;
};
#define to_virtio_fence(x) \
	container_of(x, struct virtio_gpu_fence, f)

struct virtio_gpu_vbuffer {
	char *buf;
	int size;

	void *data_buf;
	uint32_t data_size;

	char *resp_buf;
	int resp_size;

	virtio_gpu_resp_cb resp_cb;

	struct list_head list;
};

struct virtio_gpu_output {
	int index;
	struct drm_crtc crtc;
	struct drm_connector conn;
	struct drm_encoder enc;
	struct virtio_gpu_display_one info;
	struct virtio_gpu_update_cursor cursor;
	int cur_x;
	int cur_y;
	bool enabled;
};
#define drm_crtc_to_virtio_gpu_output(x) \
	container_of(x, struct virtio_gpu_output, crtc)
#define drm_connector_to_virtio_gpu_output(x) \
	container_of(x, struct virtio_gpu_output, conn)
#define drm_encoder_to_virtio_gpu_output(x) \
	container_of(x, struct virtio_gpu_output, enc)

struct virtio_gpu_framebuffer {
	struct drm_framebuffer base;
	int x1, y1, x2, y2; /* dirty rect */
	spinlock_t dirty_lock;
	uint32_t hw_res_handle;
};
#define to_virtio_gpu_framebuffer(x) \
	container_of(x, struct virtio_gpu_framebuffer, base)

struct virtio_gpu_fbdev {
	struct drm_fb_helper           helper;
	struct virtio_gpu_framebuffer  vgfb;
	struct virtio_gpu_device       *vgdev;
	struct delayed_work            work;
};

struct virtio_gpu_mman {
	struct ttm_bo_global_ref        bo_global_ref;
	struct drm_global_reference	mem_global_ref;
	bool				mem_global_referenced;
	struct ttm_bo_device		bdev;
};

struct virtio_gpu_fbdev;

struct virtio_gpu_queue {
	struct virtqueue *vq;
	spinlock_t qlock;
	wait_queue_head_t ack_queue;
	struct work_struct dequeue_work;
};

struct virtio_gpu_drv_capset {
	uint32_t id;
	uint32_t max_version;
	uint32_t max_size;
};

struct virtio_gpu_drv_cap_cache {
	struct list_head head;
	void *caps_cache;
	uint32_t id;
	uint32_t version;
	uint32_t size;
	atomic_t is_valid;
};

struct virtio_gpu_device {
	struct device *dev;
	struct drm_device *ddev;

	struct virtio_device *vdev;

	struct virtio_gpu_mman mman;

	/* pointer to fbdev info structure */
	struct virtio_gpu_fbdev *vgfbdev;
	struct virtio_gpu_output outputs[VIRTIO_GPU_MAX_SCANOUTS];
	uint32_t num_scanouts;

	struct virtio_gpu_queue ctrlq;
	struct virtio_gpu_queue cursorq;
	struct kmem_cache *vbufs;
	bool vqs_ready;

	struct idr	resource_idr;
	spinlock_t resource_idr_lock;

	wait_queue_head_t resp_wq;
	/* current display info */
	spinlock_t display_info_lock;
	bool display_info_pending;

	struct virtio_gpu_fence_driver fence_drv;

	struct idr	ctx_id_idr;
	spinlock_t ctx_id_idr_lock;

	bool has_virgl_3d;

	struct work_struct config_changed_work;

	struct virtio_gpu_drv_capset *capsets;
	uint32_t num_capsets;
	struct list_head cap_cache;
};

struct virtio_gpu_fpriv {
	uint32_t ctx_id;
};

/* virtio_ioctl.c */
#define DRM_VIRTIO_NUM_IOCTLS 10
extern struct drm_ioctl_desc virtio_gpu_ioctls[DRM_VIRTIO_NUM_IOCTLS];

/* virtio_kms.c */
int virtio_gpu_driver_load(struct drm_device *dev, unsigned long flags);
void virtio_gpu_driver_unload(struct drm_device *dev);
int virtio_gpu_driver_open(struct drm_device *dev, struct drm_file *file);
void virtio_gpu_driver_postclose(struct drm_device *dev, struct drm_file *file);

/* virtio_gem.c */
void virtio_gpu_gem_free_object(struct drm_gem_object *gem_obj);
int virtio_gpu_gem_init(struct virtio_gpu_device *vgdev);
void virtio_gpu_gem_fini(struct virtio_gpu_device *vgdev);
int virtio_gpu_gem_create(struct drm_file *file,
			  struct drm_device *dev,
			  uint64_t size,
			  struct drm_gem_object **obj_p,
			  uint32_t *handle_p);
int virtio_gpu_gem_object_open(struct drm_gem_object *obj,
			       struct drm_file *file);
void virtio_gpu_gem_object_close(struct drm_gem_object *obj,
				 struct drm_file *file);
struct virtio_gpu_object *virtio_gpu_alloc_object(struct drm_device *dev,
						  size_t size, bool kernel,
						  bool pinned);
int virtio_gpu_mode_dumb_create(struct drm_file *file_priv,
				struct drm_device *dev,
				struct drm_mode_create_dumb *args);
int virtio_gpu_mode_dumb_mmap(struct drm_file *file_priv,
			      struct drm_device *dev,
			      uint32_t handle, uint64_t *offset_p);

/* virtio_fb */
#define VIRTIO_GPUFB_CONN_LIMIT 1
int virtio_gpu_fbdev_init(struct virtio_gpu_device *vgdev);
void virtio_gpu_fbdev_fini(struct virtio_gpu_device *vgdev);
int virtio_gpu_surface_dirty(struct virtio_gpu_framebuffer *qfb,
			     struct drm_clip_rect *clips,
			     unsigned int num_clips);
/* virtio vg */
int virtio_gpu_alloc_vbufs(struct virtio_gpu_device *vgdev);
void virtio_gpu_free_vbufs(struct virtio_gpu_device *vgdev);
void virtio_gpu_resource_id_get(struct virtio_gpu_device *vgdev,
			       uint32_t *resid);
void virtio_gpu_resource_id_put(struct virtio_gpu_device *vgdev, uint32_t id);
void virtio_gpu_cmd_create_resource(struct virtio_gpu_device *vgdev,
				    struct virtio_gpu_object *bo,
				    uint32_t resource_id,
				    uint32_t format,
				    uint32_t width,
				    uint32_t height);
void virtio_gpu_cmd_unref_resource(struct virtio_gpu_device *vgdev,
				   uint32_t resource_id);
void virtio_gpu_cmd_transfer_to_host_2d(struct virtio_gpu_device *vgdev,
					struct virtio_gpu_object *bo,
					uint64_t offset,
					__le32 width, __le32 height,
					__le32 x, __le32 y,
					struct virtio_gpu_fence **fence);
void virtio_gpu_cmd_resource_flush(struct virtio_gpu_device *vgdev,
				   uint32_t resource_id,
				   uint32_t x, uint32_t y,
				   uint32_t width, uint32_t height);
void virtio_gpu_cmd_set_scanout(struct virtio_gpu_device *vgdev,
				uint32_t scanout_id, uint32_t resource_id,
				uint32_t width, uint32_t height,
				uint32_t x, uint32_t y);
int virtio_gpu_object_attach(struct virtio_gpu_device *vgdev,
			     struct virtio_gpu_object *obj,
			     uint32_t resource_id,
			     struct virtio_gpu_fence **fence);
void virtio_gpu_object_detach(struct virtio_gpu_device *vgdev,
			      struct virtio_gpu_object *obj);
int virtio_gpu_attach_status_page(struct virtio_gpu_device *vgdev);
int virtio_gpu_detach_status_page(struct virtio_gpu_device *vgdev);
void virtio_gpu_cursor_ping(struct virtio_gpu_device *vgdev,
			    struct virtio_gpu_output *output);
int virtio_gpu_cmd_get_display_info(struct virtio_gpu_device *vgdev);
int virtio_gpu_cmd_get_capset_info(struct virtio_gpu_device *vgdev, int idx);
int virtio_gpu_cmd_get_capset(struct virtio_gpu_device *vgdev,
			      int idx, int version,
			      struct virtio_gpu_drv_cap_cache **cache_p);
void virtio_gpu_cmd_context_create(struct virtio_gpu_device *vgdev, uint32_t id,
				   uint32_t nlen, const char *name);
void virtio_gpu_cmd_context_destroy(struct virtio_gpu_device *vgdev,
				    uint32_t id);
void virtio_gpu_cmd_context_attach_resource(struct virtio_gpu_device *vgdev,
					    uint32_t ctx_id,
					    uint32_t resource_id);
void virtio_gpu_cmd_context_detach_resource(struct virtio_gpu_device *vgdev,
					    uint32_t ctx_id,
					    uint32_t resource_id);
void virtio_gpu_cmd_submit(struct virtio_gpu_device *vgdev,
			   void *data, uint32_t data_size,
			   uint32_t ctx_id, struct virtio_gpu_fence **fence);
void virtio_gpu_cmd_transfer_from_host_3d(struct virtio_gpu_device *vgdev,
					  uint32_t resource_id, uint32_t ctx_id,
					  uint64_t offset, uint32_t level,
					  struct virtio_gpu_box *box,
					  struct virtio_gpu_fence **fence);
void virtio_gpu_cmd_transfer_to_host_3d(struct virtio_gpu_device *vgdev,
					struct virtio_gpu_object *bo,
					uint32_t ctx_id,
					uint64_t offset, uint32_t level,
					struct virtio_gpu_box *box,
					struct virtio_gpu_fence **fence);
void
virtio_gpu_cmd_resource_create_3d(struct virtio_gpu_device *vgdev,
				  struct virtio_gpu_object *bo,
				  struct virtio_gpu_resource_create_3d *rc_3d,
				  struct virtio_gpu_fence **fence);
void virtio_gpu_ctrl_ack(struct virtqueue *vq);
void virtio_gpu_cursor_ack(struct virtqueue *vq);
void virtio_gpu_fence_ack(struct virtqueue *vq);
void virtio_gpu_dequeue_ctrl_func(struct work_struct *work);
void virtio_gpu_dequeue_cursor_func(struct work_struct *work);
void virtio_gpu_dequeue_fence_func(struct work_struct *work);

/* virtio_gpu_display.c */
int virtio_gpu_framebuffer_init(struct drm_device *dev,
				struct virtio_gpu_framebuffer *vgfb,
				const struct drm_mode_fb_cmd2 *mode_cmd,
				struct drm_gem_object *obj);
int virtio_gpu_modeset_init(struct virtio_gpu_device *vgdev);
void virtio_gpu_modeset_fini(struct virtio_gpu_device *vgdev);

/* virtio_gpu_plane.c */
uint32_t virtio_gpu_translate_format(uint32_t drm_fourcc);
struct drm_plane *virtio_gpu_plane_init(struct virtio_gpu_device *vgdev,
					enum drm_plane_type type,
					int index);

/* virtio_gpu_ttm.c */
int virtio_gpu_ttm_init(struct virtio_gpu_device *vgdev);
void virtio_gpu_ttm_fini(struct virtio_gpu_device *vgdev);
int virtio_gpu_mmap(struct file *filp, struct vm_area_struct *vma);

/* virtio_gpu_fence.c */
int virtio_gpu_fence_emit(struct virtio_gpu_device *vgdev,
			  struct virtio_gpu_ctrl_hdr *cmd_hdr,
			  struct virtio_gpu_fence **fence);
void virtio_gpu_fence_event_process(struct virtio_gpu_device *vdev,
				    u64 last_seq);

/* virtio_gpu_object */
int virtio_gpu_object_create(struct virtio_gpu_device *vgdev,
			     unsigned long size, bool kernel, bool pinned,
			     struct virtio_gpu_object **bo_ptr);
void virtio_gpu_object_kunmap(struct virtio_gpu_object *bo);
int virtio_gpu_object_kmap(struct virtio_gpu_object *bo);
int virtio_gpu_object_get_sg_table(struct virtio_gpu_device *qdev,
				   struct virtio_gpu_object *bo);
void virtio_gpu_object_free_sg_table(struct virtio_gpu_object *bo);
int virtio_gpu_object_wait(struct virtio_gpu_object *bo, bool no_wait);

/* virtgpu_prime.c */
int virtgpu_gem_prime_pin(struct drm_gem_object *obj);
void virtgpu_gem_prime_unpin(struct drm_gem_object *obj);
struct sg_table *virtgpu_gem_prime_get_sg_table(struct drm_gem_object *obj);
struct drm_gem_object *virtgpu_gem_prime_import_sg_table(
	struct drm_device *dev, struct dma_buf_attachment *attach,
	struct sg_table *sgt);
void *virtgpu_gem_prime_vmap(struct drm_gem_object *obj);
void virtgpu_gem_prime_vunmap(struct drm_gem_object *obj, void *vaddr);
int virtgpu_gem_prime_mmap(struct drm_gem_object *obj,
			   struct vm_area_struct *vma);

static inline struct virtio_gpu_object*
virtio_gpu_object_ref(struct virtio_gpu_object *bo)
{
	ttm_bo_get(&bo->tbo);
	return bo;
}

static inline void virtio_gpu_object_unref(struct virtio_gpu_object **bo)
{
	struct ttm_buffer_object *tbo;

	if ((*bo) == NULL)
		return;
	tbo = &((*bo)->tbo);
	ttm_bo_put(tbo);
	*bo = NULL;
}

static inline u64 virtio_gpu_object_mmap_offset(struct virtio_gpu_object *bo)
{
	return drm_vma_node_offset_addr(&bo->tbo.vma_node);
}

static inline int virtio_gpu_object_reserve(struct virtio_gpu_object *bo,
					 bool no_wait)
{
	int r;

	r = ttm_bo_reserve(&bo->tbo, true, no_wait, NULL);
	if (unlikely(r != 0)) {
		if (r != -ERESTARTSYS) {
			struct virtio_gpu_device *qdev =
				bo->gem_base.dev->dev_private;
			dev_err(qdev->dev, "%p reserve failed\n", bo);
		}
		return r;
	}
	return 0;
}

static inline void virtio_gpu_object_unreserve(struct virtio_gpu_object *bo)
{
	ttm_bo_unreserve(&bo->tbo);
}

/* virgl debufs */
int virtio_gpu_debugfs_init(struct drm_minor *minor);

#endif