2 * Copyright (C) 2014 Etnaviv Project
4 * Permission is hereby granted, free of charge, to any person obtaining a
5 * copy of this software and associated documentation files (the "Software"),
6 * to deal in the Software without restriction, including without limitation
7 * the rights to use, copy, modify, merge, publish, distribute, sublicense,
8 * and/or sell copies of the Software, and to permit persons to whom the
9 * Software is furnished to do so, subject to the following conditions:
11 * The above copyright notice and this permission notice (including the next
12 * paragraph) shall be included in all copies or substantial portions of the
15 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
16 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
17 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
18 * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
19 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
20 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
24 * Christian Gmeiner <christian.gmeiner@gmail.com>
27 #include "etnaviv_priv.h"
28 #include "etnaviv_drmif.h"
30 drm_private pthread_mutex_t table_lock = PTHREAD_MUTEX_INITIALIZER;
31 drm_private void bo_del(struct etna_bo *bo);
33 /* set buffer name, and add to table, call w/ table_lock held: */
34 static void set_name(struct etna_bo *bo, uint32_t name)
37 /* add ourself into the name table: */
38 drmHashInsert(bo->dev->name_table, name, bo);
41 /* Called under table_lock */
42 drm_private void bo_del(struct etna_bo *bo)
45 drm_munmap(bo->map, bo->size);
48 drmHashDelete(bo->dev->name_table, bo->name);
51 struct drm_gem_close req = {
55 drmHashDelete(bo->dev->handle_table, bo->handle);
56 drmIoctl(bo->dev->fd, DRM_IOCTL_GEM_CLOSE, &req);
62 /* lookup a buffer from it's handle, call w/ table_lock held: */
63 static struct etna_bo *lookup_bo(void *tbl, uint32_t handle)
65 struct etna_bo *bo = NULL;
67 if (!drmHashLookup(tbl, handle, (void **)&bo)) {
68 /* found, incr refcnt and return: */
71 /* don't break the bucket if this bo was found in one */
72 list_delinit(&bo->list);
78 /* allocate a new buffer object, call w/ table_lock held */
79 static struct etna_bo *bo_from_handle(struct etna_device *dev,
80 uint32_t size, uint32_t handle, uint32_t flags)
82 struct etna_bo *bo = calloc(sizeof(*bo), 1);
85 struct drm_gem_close req = {
89 drmIoctl(dev->fd, DRM_IOCTL_GEM_CLOSE, &req);
94 bo->dev = etna_device_ref(dev);
98 atomic_set(&bo->refcnt, 1);
99 list_inithead(&bo->list);
100 /* add ourselves to the handle table: */
101 drmHashInsert(dev->handle_table, handle, bo);
106 /* allocate a new (un-tiled) buffer object */
107 drm_public struct etna_bo *etna_bo_new(struct etna_device *dev, uint32_t size,
112 struct drm_etnaviv_gem_new req = {
116 bo = etna_bo_cache_alloc(&dev->bo_cache, &size, flags);
121 ret = drmCommandWriteRead(dev->fd, DRM_ETNAVIV_GEM_NEW,
126 pthread_mutex_lock(&table_lock);
127 bo = bo_from_handle(dev, size, req.handle, flags);
129 pthread_mutex_unlock(&table_lock);
134 drm_public struct etna_bo *etna_bo_ref(struct etna_bo *bo)
136 atomic_inc(&bo->refcnt);
141 /* get buffer info */
142 static int get_buffer_info(struct etna_bo *bo)
145 struct drm_etnaviv_gem_info req = {
146 .handle = bo->handle,
149 ret = drmCommandWriteRead(bo->dev->fd, DRM_ETNAVIV_GEM_INFO,
155 /* really all we need for now is mmap offset */
156 bo->offset = req.offset;
161 /* import a buffer object from DRI2 name */
162 drm_public struct etna_bo *etna_bo_from_name(struct etna_device *dev,
166 struct drm_gem_open req = {
170 pthread_mutex_lock(&table_lock);
172 /* check name table first, to see if bo is already open: */
173 bo = lookup_bo(dev->name_table, name);
177 if (drmIoctl(dev->fd, DRM_IOCTL_GEM_OPEN, &req)) {
178 ERROR_MSG("gem-open failed: %s", strerror(errno));
182 bo = lookup_bo(dev->handle_table, req.handle);
186 bo = bo_from_handle(dev, req.size, req.handle, 0);
191 pthread_mutex_unlock(&table_lock);
196 /* import a buffer from dmabuf fd, does not take ownership of the
197 * fd so caller should close() the fd when it is otherwise done
198 * with it (even if it is still using the 'struct etna_bo *')
200 drm_public struct etna_bo *etna_bo_from_dmabuf(struct etna_device *dev, int fd)
206 /* take the lock before calling drmPrimeFDToHandle to avoid
207 * racing against etna_bo_del, which might invalidate the
210 pthread_mutex_lock(&table_lock);
212 ret = drmPrimeFDToHandle(dev->fd, fd, &handle);
214 pthread_mutex_unlock(&table_lock);
218 bo = lookup_bo(dev->handle_table, handle);
222 /* lseek() to get bo size */
223 size = lseek(fd, 0, SEEK_END);
224 lseek(fd, 0, SEEK_CUR);
226 bo = bo_from_handle(dev, size, handle, 0);
229 pthread_mutex_unlock(&table_lock);
234 /* destroy a buffer object */
235 drm_public void etna_bo_del(struct etna_bo *bo)
237 struct etna_device *dev = bo->dev;
242 if (!atomic_dec_and_test(&bo->refcnt))
245 pthread_mutex_lock(&table_lock);
247 if (bo->reuse && (etna_bo_cache_free(&dev->bo_cache, bo) == 0))
251 etna_device_del_locked(dev);
253 pthread_mutex_unlock(&table_lock);
256 /* get the global flink/DRI2 buffer name */
257 drm_public int etna_bo_get_name(struct etna_bo *bo, uint32_t *name)
260 struct drm_gem_flink req = {
261 .handle = bo->handle,
265 ret = drmIoctl(bo->dev->fd, DRM_IOCTL_GEM_FLINK, &req);
270 pthread_mutex_lock(&table_lock);
271 set_name(bo, req.name);
272 pthread_mutex_unlock(&table_lock);
281 drm_public uint32_t etna_bo_handle(struct etna_bo *bo)
286 /* caller owns the dmabuf fd that is returned and is responsible
287 * to close() it when done
289 drm_public int etna_bo_dmabuf(struct etna_bo *bo)
293 ret = drmPrimeHandleToFD(bo->dev->fd, bo->handle, DRM_CLOEXEC,
296 ERROR_MSG("failed to get dmabuf fd: %d", ret);
305 drm_public uint32_t etna_bo_size(struct etna_bo *bo)
310 drm_public void *etna_bo_map(struct etna_bo *bo)
317 bo->map = drm_mmap(0, bo->size, PROT_READ | PROT_WRITE,
318 MAP_SHARED, bo->dev->fd, bo->offset);
319 if (bo->map == MAP_FAILED) {
320 ERROR_MSG("mmap failed: %s", strerror(errno));
328 drm_public int etna_bo_cpu_prep(struct etna_bo *bo, uint32_t op)
330 struct drm_etnaviv_gem_cpu_prep req = {
331 .handle = bo->handle,
335 get_abs_timeout(&req.timeout, 5000000000);
337 return drmCommandWrite(bo->dev->fd, DRM_ETNAVIV_GEM_CPU_PREP,
341 drm_public void etna_bo_cpu_fini(struct etna_bo *bo)
343 struct drm_etnaviv_gem_cpu_fini req = {
344 .handle = bo->handle,
347 drmCommandWrite(bo->dev->fd, DRM_ETNAVIV_GEM_CPU_FINI,