summaryrefslogtreecommitdiffstats
path: root/freedreno/freedreno_bo.c
blob: 3cdc97379eeb4c49b90c63d9164dbbc63958ce45 (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
/* -*- mode: C; c-file-style: "k&r"; tab-width 4; indent-tabs-mode: t; -*- */

/*
 * Copyright (C) 2012 Rob Clark <robclark@freedesktop.org>
 *
 * 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 AUTHORS OR COPYRIGHT HOLDERS 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.
 *
 * Authors:
 *    Rob Clark <robclark@freedesktop.org>
 */

#include "freedreno_drmif.h"
#include "freedreno_priv.h"

drm_private pthread_mutex_t table_lock = PTHREAD_MUTEX_INITIALIZER;
drm_private void bo_del(struct fd_bo *bo);

/* set buffer name, and add to table, call w/ table_lock held: */
static void set_name(struct fd_bo *bo, uint32_t name)
{
	bo->name = name;
	/* add ourself into the handle table: */
	drmHashInsert(bo->dev->name_table, name, bo);
}

/* lookup a buffer, call w/ table_lock held: */
static struct fd_bo * lookup_bo(void *tbl, uint32_t key)
{
	struct fd_bo *bo = NULL;
	if (!drmHashLookup(tbl, key, (void **)&bo)) {
		/* found, incr refcnt and return: */
		bo = fd_bo_ref(bo);

		/* don't break the bucket if this bo was found in one */
		list_delinit(&bo->list);
	}
	return bo;
}

/* allocate a new buffer object, call w/ table_lock held */
static struct fd_bo * bo_from_handle(struct fd_device *dev,
		uint32_t size, uint32_t handle)
{
	struct fd_bo *bo;

	bo = dev->funcs->bo_from_handle(dev, size, handle);
	if (!bo) {
		drmCloseBufferHandle(dev->fd, handle);
		return NULL;
	}
	bo->dev = fd_device_ref(dev);
	bo->size = size;
	bo->handle = handle;
	atomic_set(&bo->refcnt, 1);
	list_inithead(&bo->list);
	/* add ourself into the handle table: */
	drmHashInsert(dev->handle_table, handle, bo);
	return bo;
}

static struct fd_bo *
bo_new(struct fd_device *dev, uint32_t size, uint32_t flags,
		struct fd_bo_cache *cache)
{
	struct fd_bo *bo = NULL;
	uint32_t handle;
	int ret;

	bo = fd_bo_cache_alloc(cache, &size, flags);
	if (bo)
		return bo;

	ret = dev->funcs->bo_new_handle(dev, size, flags, &handle);
	if (ret)
		return NULL;

	pthread_mutex_lock(&table_lock);
	bo = bo_from_handle(dev, size, handle);
	pthread_mutex_unlock(&table_lock);

	VG_BO_ALLOC(bo);

	return bo;
}

drm_public struct fd_bo *
fd_bo_new(struct fd_device *dev, uint32_t size, uint32_t flags)
{
	struct fd_bo *bo = bo_new(dev, size, flags, &dev->bo_cache);
	if (bo)
		bo->bo_reuse = BO_CACHE;
	return bo;
}

/* internal function to allocate bo's that use the ringbuffer cache
 * instead of the normal bo_cache.  The purpose is, because cmdstream
 * bo's get vmap'd on the kernel side, and that is expensive, we want
 * to re-use cmdstream bo's for cmdstream and not unrelated purposes.
 */
drm_private struct fd_bo *
fd_bo_new_ring(struct fd_device *dev, uint32_t size, uint32_t flags)
{
	struct fd_bo *bo = bo_new(dev, size, flags, &dev->ring_cache);
	if (bo)
		bo->bo_reuse = RING_CACHE;
	return bo;
}

drm_public struct fd_bo *
fd_bo_from_handle(struct fd_device *dev, uint32_t handle, uint32_t size)
{
	struct fd_bo *bo = NULL;

	pthread_mutex_lock(&table_lock);

	bo = lookup_bo(dev->handle_table, handle);
	if (bo)
		goto out_unlock;

	bo = bo_from_handle(dev, size, handle);

	VG_BO_ALLOC(bo);

out_unlock:
	pthread_mutex_unlock(&table_lock);

	return bo;
}

drm_public struct fd_bo *
fd_bo_from_dmabuf(struct fd_device *dev, int fd)
{
	int ret, size;
	uint32_t handle;
	struct fd_bo *bo;

	pthread_mutex_lock(&table_lock);
	ret = drmPrimeFDToHandle(dev->fd, fd, &handle);
	if (ret) {
		pthread_mutex_unlock(&table_lock);
		return NULL;
	}

	bo = lookup_bo(dev->handle_table, handle);
	if (bo)
		goto out_unlock;

	/* lseek() to get bo size */
	size = lseek(fd, 0, SEEK_END);
	lseek(fd, 0, SEEK_CUR);

	bo = bo_from_handle(dev, size, handle);

	VG_BO_ALLOC(bo);

out_unlock:
	pthread_mutex_unlock(&table_lock);

	return bo;
}

drm_public struct fd_bo * fd_bo_from_name(struct fd_device *dev, uint32_t name)
{
	struct drm_gem_open req = {
			.name = name,
	};
	struct fd_bo *bo;

	pthread_mutex_lock(&table_lock);

	/* check name table first, to see if bo is already open: */
	bo = lookup_bo(dev->name_table, name);
	if (bo)
		goto out_unlock;

	if (drmIoctl(dev->fd, DRM_IOCTL_GEM_OPEN, &req)) {
		ERROR_MSG("gem-open failed: %s", strerror(errno));
		goto out_unlock;
	}

	bo = lookup_bo(dev->handle_table, req.handle);
	if (bo)
		goto out_unlock;

	bo = bo_from_handle(dev, req.size, req.handle);
	if (bo) {
		set_name(bo, name);
		VG_BO_ALLOC(bo);
	}

out_unlock:
	pthread_mutex_unlock(&table_lock);

	return bo;
}

drm_public uint64_t fd_bo_get_iova(struct fd_bo *bo)
{
	return bo->funcs->iova(bo);
}

drm_public void fd_bo_put_iova(struct fd_bo *bo)
{
	/* currently a no-op */
}

drm_public struct fd_bo * fd_bo_ref(struct fd_bo *bo)
{
	atomic_inc(&bo->refcnt);
	return bo;
}

drm_public void fd_bo_del(struct fd_bo *bo)
{
	struct fd_device *dev = bo->dev;

	if (!atomic_dec_and_test(&bo->refcnt))
		return;

	pthread_mutex_lock(&table_lock);

	if ((bo->bo_reuse == BO_CACHE) && (fd_bo_cache_free(&dev->bo_cache, bo) == 0))
		goto out;
	if ((bo->bo_reuse == RING_CACHE) && (fd_bo_cache_free(&dev->ring_cache, bo) == 0))
		goto out;

	bo_del(bo);
	fd_device_del_locked(dev);
out:
	pthread_mutex_unlock(&table_lock);
}

/* Called under table_lock */
drm_private void bo_del(struct fd_bo *bo)
{
	VG_BO_FREE(bo);

	if (bo->map)
		drm_munmap(bo->map, bo->size);

	/* TODO probably bo's in bucket list get removed from
	 * handle table??
	 */

	if (bo->handle) {
		drmHashDelete(bo->dev->handle_table, bo->handle);
		if (bo->name)
			drmHashDelete(bo->dev->name_table, bo->name);
		drmCloseBufferHandle(bo->dev->fd, bo->handle);
	}

	bo->funcs->destroy(bo);
}

drm_public int fd_bo_get_name(struct fd_bo *bo, uint32_t *name)
{
	if (!bo->name) {
		struct drm_gem_flink req = {
				.handle = bo->handle,
		};
		int ret;

		ret = drmIoctl(bo->dev->fd, DRM_IOCTL_GEM_FLINK, &req);
		if (ret) {
			return ret;
		}

		pthread_mutex_lock(&table_lock);
		set_name(bo, req.name);
		pthread_mutex_unlock(&table_lock);
		bo->bo_reuse = NO_CACHE;
	}

	*name = bo->name;

	return 0;
}

drm_public uint32_t fd_bo_handle(struct fd_bo *bo)
{
	return bo->handle;
}

drm_public int fd_bo_dmabuf(struct fd_bo *bo)
{
	int ret, prime_fd;

	ret = drmPrimeHandleToFD(bo->dev->fd, bo->handle, DRM_CLOEXEC,
			&prime_fd);
	if (ret) {
		ERROR_MSG("failed to get dmabuf fd: %d", ret);
		return ret;
	}

	bo->bo_reuse = NO_CACHE;

	return prime_fd;
}

drm_public uint32_t fd_bo_size(struct fd_bo *bo)
{
	return bo->size;
}

drm_public void * fd_bo_map(struct fd_bo *bo)
{
	if (!bo->map) {
		uint64_t offset;
		int ret;

		ret = bo->funcs->offset(bo, &offset);
		if (ret) {
			return NULL;
		}

		bo->map = drm_mmap(0, bo->size, PROT_READ | PROT_WRITE, MAP_SHARED,
				bo->dev->fd, offset);
		if (bo->map == MAP_FAILED) {
			ERROR_MSG("mmap failed: %s", strerror(errno));
			bo->map = NULL;
		}
	}
	return bo->map;
}

/* a bit odd to take the pipe as an arg, but it's a, umm, quirk of kgsl.. */
drm_public int fd_bo_cpu_prep(struct fd_bo *bo, struct fd_pipe *pipe, uint32_t op)
{
	return bo->funcs->cpu_prep(bo, pipe, op);
}

drm_public void fd_bo_cpu_fini(struct fd_bo *bo)
{
	bo->funcs->cpu_fini(bo);
}

#if !HAVE_FREEDRENO_KGSL
drm_public struct fd_bo * fd_bo_from_fbdev(struct fd_pipe *pipe, int fbfd, uint32_t size)
{
    return NULL;
}
#endif