2 * Copyright (c) 2016 The Chromium OS Authors. All rights reserved.
3 * Use of this source code is governed by a BSD-style license that can be
4 * found in the LICENSE file.
19 extern struct backend backend_cirrus;
20 extern struct backend backend_evdi;
22 extern struct backend backend_exynos;
24 extern struct backend backend_gma500;
26 extern struct backend backend_i915;
29 extern struct backend backend_marvell;
32 extern struct backend backend_mediatek;
35 extern struct backend backend_rockchip;
38 extern struct backend backend_tegra;
40 extern struct backend backend_udl;
41 extern struct backend backend_virtio_gpu;
43 static struct backend *drv_get_backend(int fd)
45 drmVersionPtr drm_version;
48 drm_version = drmGetVersion(fd);
53 struct backend *backend_list[] = {
79 for(i = 0; i < ARRAY_SIZE(backend_list); i++)
80 if (!strcmp(drm_version->name, backend_list[i]->name)) {
81 drmFreeVersion(drm_version);
82 return backend_list[i];
85 drmFreeVersion(drm_version);
89 struct driver *drv_create(int fd)
94 drv = (struct driver *) calloc(1, sizeof(*drv));
100 drv->backend = drv_get_backend(fd);
107 if (pthread_mutex_init(&drv->table_lock, NULL)) {
112 drv->buffer_table = drmHashCreate();
113 if (!drv->buffer_table) {
118 if (drv->backend->init) {
119 ret = drv->backend->init(drv);
129 void drv_destroy(struct driver *drv)
131 if (drv->backend->close)
132 drv->backend->close(drv);
134 pthread_mutex_destroy(&drv->table_lock);
135 drmHashDestroy(drv->buffer_table);
140 int drv_get_fd(struct driver *drv)
146 drv_get_name(struct driver *drv)
148 return drv->backend->name;
151 int drv_is_format_supported(struct driver *drv, drv_format_t format,
156 if (format == DRV_FORMAT_NONE || usage == DRV_BO_USE_NONE)
159 for (i = 0 ; i < ARRAY_SIZE(drv->backend->format_list); i++)
161 if (!drv->backend->format_list[i].format)
164 if (drv->backend->format_list[i].format == format &&
165 (drv->backend->format_list[i].usage & usage) == usage)
172 struct bo *drv_bo_new(struct driver *drv, uint32_t width, uint32_t height,
177 bo = (struct bo *) calloc(1, sizeof(*bo));
186 bo->num_planes = drv_num_planes_from_format(format);
188 if (!bo->num_planes) {
196 struct bo *drv_bo_create(struct driver *drv, uint32_t width, uint32_t height,
197 drv_format_t format, uint64_t flags)
203 bo = drv_bo_new(drv, width, height, format);
208 ret = drv->backend->bo_create(bo, width, height, format, flags);
215 pthread_mutex_lock(&drv->table_lock);
217 for (plane = 0; plane < bo->num_planes; plane++)
218 drv_increment_reference_count(drv, bo, plane);
220 pthread_mutex_unlock(&drv->table_lock);
225 void drv_bo_destroy(struct bo *bo)
229 struct driver *drv = bo->drv;
231 pthread_mutex_lock(&drv->table_lock);
233 for (plane = 0; plane < bo->num_planes; plane++)
234 drv_decrement_reference_count(drv, bo, plane);
236 for (plane = 0; plane < bo->num_planes; plane++)
237 total += drv_get_reference_count(drv, bo, plane);
239 pthread_mutex_unlock(&drv->table_lock);
242 bo->drv->backend->bo_destroy(bo);
247 struct bo *drv_bo_import(struct driver *drv, struct drv_import_fd_data *data)
251 struct drm_prime_handle prime_handle;
253 memset(&prime_handle, 0, sizeof(prime_handle));
254 prime_handle.fd = data->fd;
256 /* This function can support only single plane formats. */
257 /* If multi-plane import is desired, new function should be added. */
258 if (drv_num_planes_from_format(data->format) != 1)
261 bo = drv_bo_new(drv, data->width, data->height, data->format);
263 ret = drmIoctl(drv->fd, DRM_IOCTL_PRIME_FD_TO_HANDLE,
267 fprintf(stderr, "drv: DRM_IOCTL_PRIME_FD_TO_HANDLE failed "
268 "(fd=%u)\n", prime_handle.fd);
273 bo->strides[0] = data->stride;
274 bo->sizes[0] = data->height * data->stride;
275 bo->handles[0].u32 = prime_handle.handle;
277 pthread_mutex_lock(&drv->table_lock);
278 drv_increment_reference_count(drv, bo, 0);
279 pthread_mutex_unlock(&drv->table_lock);
284 uint32_t drv_bo_get_width(struct bo *bo)
289 uint32_t drv_bo_get_height(struct bo *bo)
294 uint32_t drv_bo_get_stride_or_tiling(struct bo *bo)
296 return bo->tiling ? bo->tiling : drv_bo_get_plane_stride(bo, 0);
299 size_t drv_bo_get_num_planes(struct bo *bo)
301 return bo->num_planes;
304 union bo_handle drv_bo_get_plane_handle(struct bo *bo, size_t plane)
306 return bo->handles[plane];
310 #define DRM_RDWR O_RDWR
313 int drv_bo_get_plane_fd(struct bo *bo, size_t plane)
317 assert(plane < bo->num_planes);
319 ret = drmPrimeHandleToFD(bo->drv->fd, bo->handles[plane].u32,
320 DRM_CLOEXEC | DRM_RDWR, &fd);
322 return (ret) ? ret : fd;
326 uint32_t drv_bo_get_plane_offset(struct bo *bo, size_t plane)
328 assert(plane < bo->num_planes);
329 return bo->offsets[plane];
332 uint32_t drv_bo_get_plane_size(struct bo *bo, size_t plane)
334 assert(plane < bo->num_planes);
335 return bo->sizes[plane];
338 uint32_t drv_bo_get_plane_stride(struct bo *bo, size_t plane)
340 assert(plane < bo->num_planes);
341 return bo->strides[plane];
344 uint64_t drv_bo_get_plane_format_modifier(struct bo *bo, size_t plane)
346 assert(plane < bo->num_planes);
347 return bo->format_modifiers[plane];