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.
20 extern struct backend backend_cirrus;
21 extern struct backend backend_evdi;
23 extern struct backend backend_exynos;
25 extern struct backend backend_gma500;
27 extern struct backend backend_i915;
30 extern struct backend backend_marvell;
33 extern struct backend backend_mediatek;
36 extern struct backend backend_rockchip;
39 extern struct backend backend_tegra;
41 extern struct backend backend_udl;
42 extern struct backend backend_virtio_gpu;
44 static struct backend *drv_get_backend(int fd)
46 drmVersionPtr drm_version;
49 drm_version = drmGetVersion(fd);
54 struct backend *backend_list[] = {
80 for(i = 0; i < ARRAY_SIZE(backend_list); i++)
81 if (!strcmp(drm_version->name, backend_list[i]->name)) {
82 drmFreeVersion(drm_version);
83 return backend_list[i];
86 drmFreeVersion(drm_version);
90 struct driver *drv_create(int fd)
95 drv = (struct driver *) calloc(1, sizeof(*drv));
101 drv->backend = drv_get_backend(fd);
108 if (pthread_mutex_init(&drv->table_lock, NULL)) {
113 drv->buffer_table = drmHashCreate();
114 if (!drv->buffer_table) {
119 if (drv->backend->init) {
120 ret = drv->backend->init(drv);
130 void drv_destroy(struct driver *drv)
132 if (drv->backend->close)
133 drv->backend->close(drv);
135 pthread_mutex_destroy(&drv->table_lock);
136 drmHashDestroy(drv->buffer_table);
141 int drv_get_fd(struct driver *drv)
147 drv_get_name(struct driver *drv)
149 return drv->backend->name;
152 int drv_is_format_supported(struct driver *drv, drv_format_t format,
157 if (format == DRV_FORMAT_NONE || usage == DRV_BO_USE_NONE)
160 for (i = 0 ; i < ARRAY_SIZE(drv->backend->format_list); i++)
162 if (!drv->backend->format_list[i].format)
165 if (drv->backend->format_list[i].format == format &&
166 (drv->backend->format_list[i].usage & usage) == usage)
173 struct bo *drv_bo_new(struct driver *drv, uint32_t width, uint32_t height,
178 bo = (struct bo *) calloc(1, sizeof(*bo));
187 bo->num_planes = drv_num_planes_from_format(format);
189 if (!bo->num_planes) {
197 struct bo *drv_bo_create(struct driver *drv, uint32_t width, uint32_t height,
198 drv_format_t format, uint64_t flags)
204 bo = drv_bo_new(drv, width, height, format);
209 ret = drv->backend->bo_create(bo, width, height, format, flags);
216 pthread_mutex_lock(&drv->table_lock);
218 for (plane = 0; plane < bo->num_planes; plane++)
219 drv_increment_reference_count(drv, bo, plane);
221 pthread_mutex_unlock(&drv->table_lock);
226 void drv_bo_destroy(struct bo *bo)
230 struct driver *drv = bo->drv;
232 pthread_mutex_lock(&drv->table_lock);
234 for (plane = 0; plane < bo->num_planes; plane++)
235 drv_decrement_reference_count(drv, bo, plane);
237 for (plane = 0; plane < bo->num_planes; plane++)
238 total += drv_get_reference_count(drv, bo, plane);
240 pthread_mutex_unlock(&drv->table_lock);
243 bo->drv->backend->bo_destroy(bo);
249 drv_bo_map(struct bo *bo)
251 assert(drv_num_buffers_per_bo(bo) == 1);
253 if (!bo->map_data || bo->map_data == MAP_FAILED)
254 bo->map_data = bo->drv->backend->bo_map(bo);
260 drv_bo_unmap(struct bo *bo)
264 assert(drv_num_buffers_per_bo(bo) == 1);
266 if (bo->map_data && bo->map_data != MAP_FAILED)
267 ret = munmap(bo->map_data, bo->sizes[0]);
274 struct bo *drv_bo_import(struct driver *drv, struct drv_import_fd_data *data)
278 struct drm_prime_handle prime_handle;
280 memset(&prime_handle, 0, sizeof(prime_handle));
281 prime_handle.fd = data->fd;
283 /* This function can support only single plane formats. */
284 /* If multi-plane import is desired, new function should be added. */
285 if (drv_num_planes_from_format(data->format) != 1)
288 bo = drv_bo_new(drv, data->width, data->height, data->format);
290 ret = drmIoctl(drv->fd, DRM_IOCTL_PRIME_FD_TO_HANDLE,
294 fprintf(stderr, "drv: DRM_IOCTL_PRIME_FD_TO_HANDLE failed "
295 "(fd=%u)\n", prime_handle.fd);
300 bo->strides[0] = data->stride;
301 bo->sizes[0] = data->height * data->stride;
302 bo->handles[0].u32 = prime_handle.handle;
304 pthread_mutex_lock(&drv->table_lock);
305 drv_increment_reference_count(drv, bo, 0);
306 pthread_mutex_unlock(&drv->table_lock);
311 uint32_t drv_bo_get_width(struct bo *bo)
316 uint32_t drv_bo_get_height(struct bo *bo)
321 uint32_t drv_bo_get_stride_or_tiling(struct bo *bo)
323 return bo->tiling ? bo->tiling : drv_bo_get_plane_stride(bo, 0);
326 size_t drv_bo_get_num_planes(struct bo *bo)
328 return bo->num_planes;
331 union bo_handle drv_bo_get_plane_handle(struct bo *bo, size_t plane)
333 return bo->handles[plane];
337 #define DRM_RDWR O_RDWR
340 int drv_bo_get_plane_fd(struct bo *bo, size_t plane)
344 assert(plane < bo->num_planes);
346 ret = drmPrimeHandleToFD(bo->drv->fd, bo->handles[plane].u32,
347 DRM_CLOEXEC | DRM_RDWR, &fd);
349 return (ret) ? ret : fd;
353 uint32_t drv_bo_get_plane_offset(struct bo *bo, size_t plane)
355 assert(plane < bo->num_planes);
356 return bo->offsets[plane];
359 uint32_t drv_bo_get_plane_size(struct bo *bo, size_t plane)
361 assert(plane < bo->num_planes);
362 return bo->sizes[plane];
365 uint32_t drv_bo_get_plane_stride(struct bo *bo, size_t plane)
367 assert(plane < bo->num_planes);
368 return bo->strides[plane];
371 uint64_t drv_bo_get_plane_format_modifier(struct bo *bo, size_t plane)
373 assert(plane < bo->num_planes);
374 return bo->format_modifiers[plane];