3  * Use of this source code is governed by a BSD-style license that can be
19 #include "dri.h"
54 		if ((*extensions)->name && !strcmp((*extensions)->name, name) &&  in lookup_extension()
55 		    (*extensions)->version >= min_version) {  in lookup_extension()
67  * The DRI GEM namespace may be different from the minigbm's driver GEM namespace. We have
70 static int import_into_minigbm(struct dri_driver *dri, struct bo *bo)  in import_into_minigbm()  argument
75 	if (!dri->image_extension->queryImage(bo->priv, __DRI_IMAGE_ATTRIB_FD, &prime_fd))  in import_into_minigbm()
76 		return -errno;  in import_into_minigbm()
78 	ret = drmPrimeFDToHandle(bo->drv->fd, prime_fd, &handle);  in import_into_minigbm()
80 		drv_log("drmPrimeFDToHandle failed with %s\n", strerror(errno));  in import_into_minigbm()
84 	bo->handles[0].u32 = handle;  in import_into_minigbm()
90  * The caller is responsible for setting drv->priv to a structure that derives from dri_driver.
98 	struct dri_driver *dri = drv->priv;  in dri_init()  local
99 	dri->driver_handle = dlopen(dri_so_path, RTLD_NOW | RTLD_GLOBAL);  in dri_init()
100 	if (!dri->driver_handle)  in dri_init()
101 		return -ENODEV;  in dri_init()
104 	get_extensions = dlsym(dri->driver_handle, fname);  in dri_init()
108 	dri->extensions = get_extensions();  in dri_init()
109 	if (!dri->extensions)  in dri_init()
112 	if (!lookup_extension(dri->extensions, __DRI_CORE, 2,  in dri_init()
113 			      (const __DRIextension **)&dri->core_extension))  in dri_init()
117 	if (!lookup_extension(dri->extensions, __DRI_DRI2, 4,  in dri_init()
118 			      (const __DRIextension **)&dri->dri2_extension))  in dri_init()
121 	dri->device = dri->dri2_extension->createNewScreen2(0, drv_get_fd(drv), loader_extensions,  in dri_init()
122 							    dri->extensions, &dri->configs, NULL);  in dri_init()
123 	if (!dri->device)  in dri_init()
126 	dri->context =  in dri_init()
127 	    dri->dri2_extension->createNewContext(dri->device, *dri->configs, NULL, NULL);  in dri_init()
129 	if (!dri->context)  in dri_init()
132 	if (!lookup_extension(dri->core_extension->getExtensions(dri->device), __DRI_IMAGE, 12,  in dri_init()
133 			      (const __DRIextension **)&dri->image_extension))  in dri_init()
136 	if (!lookup_extension(dri->core_extension->getExtensions(dri->device), __DRI2_FLUSH, 4,  in dri_init()
137 			      (const __DRIextension **)&dri->flush_extension))  in dri_init()
143 	dri->core_extension->destroyContext(dri->context);  in dri_init()
145 	dri->core_extension->destroyScreen(dri->device);  in dri_init()
147 	dlclose(dri->driver_handle);  in dri_init()
148 	dri->driver_handle = NULL;  in dri_init()
149 	return -ENODEV;  in dri_init()
153  * The caller is responsible for freeing drv->priv.
157 	struct dri_driver *dri = drv->priv;  in dri_close()  local
159 	dri->core_extension->destroyContext(dri->context);  in dri_close()
160 	dri->core_extension->destroyScreen(dri->device);  in dri_close()
161 	dlclose(dri->driver_handle);  in dri_close()
162 	dri->driver_handle = NULL;  in dri_close()
170 	struct dri_driver *dri = bo->drv->priv;  in dri_bo_create()  local
172 	assert(bo->num_planes == 1);  in dri_bo_create()
175 	/* Gallium drivers require shared to get the handle and stride. */  in dri_bo_create()
184 	bo->priv = dri->image_extension->createImage(dri->device, width, height, dri_format,  in dri_bo_create()
186 	if (!bo->priv) {  in dri_bo_create()
187 		ret = -errno;  in dri_bo_create()
191 	ret = import_into_minigbm(dri, bo);  in dri_bo_create()
195 	if (!dri->image_extension->queryImage(bo->priv, __DRI_IMAGE_ATTRIB_STRIDE, &stride)) {  in dri_bo_create()
196 		ret = -errno;  in dri_bo_create()
200 	if (!dri->image_extension->queryImage(bo->priv, __DRI_IMAGE_ATTRIB_OFFSET, &offset)) {  in dri_bo_create()
201 		ret = -errno;  in dri_bo_create()
205 	bo->strides[0] = stride;  in dri_bo_create()
206 	bo->sizes[0] = stride * height;  in dri_bo_create()
207 	bo->offsets[0] = offset;  in dri_bo_create()
208 	bo->total_size = offset + bo->sizes[0];  in dri_bo_create()
212 	dri->image_extension->destroyImage(bo->priv);  in dri_bo_create()
219 	struct dri_driver *dri = bo->drv->priv;  in dri_bo_import()  local
221 	assert(bo->num_planes == 1);  in dri_bo_import()
223 	// clang-format off  in dri_bo_import()
224 	bo->priv = dri->image_extension->createImageFromFds(dri->device, data->width, data->height,  in dri_bo_import()
225 							    data->format, data->fds, bo->num_planes,  in dri_bo_import()
226 							    (int *)data->strides,  in dri_bo_import()
227 							    (int *)data->offsets, NULL);  in dri_bo_import()
228 	// clang-format on  in dri_bo_import()
229 	if (!bo->priv)  in dri_bo_import()
230 		return -errno;  in dri_bo_import()
232 	ret = import_into_minigbm(dri, bo);  in dri_bo_import()
234 		dri->image_extension->destroyImage(bo->priv);  in dri_bo_import()
243 	struct dri_driver *dri = bo->drv->priv;  in dri_bo_destroy()  local
245 	assert(bo->priv);  in dri_bo_destroy()
246 	dri->image_extension->destroyImage(bo->priv);  in dri_bo_destroy()
247 	bo->priv = NULL;  in dri_bo_destroy()
254  * This relies on the underlying driver to do a decompressing and/or de-tiling
257  * This function itself is not thread-safe; we rely on the fact that the caller
258  * locks a per-driver mutex.
262 	struct dri_driver *dri = bo->drv->priv;  in dri_bo_map()  local
264 	/* GBM flags and DRI flags are the same. */  in dri_bo_map()
265 	vma->addr =  in dri_bo_map()
266 	    dri->image_extension->mapImage(dri->context, bo->priv, 0, 0, bo->width, bo->height,  in dri_bo_map()
267 					   map_flags, (int *)&vma->map_strides[plane], &vma->priv);  in dri_bo_map()
268 	if (!vma->addr)  in dri_bo_map()
271 	return vma->addr;  in dri_bo_map()
276 	struct dri_driver *dri = bo->drv->priv;  in dri_bo_unmap()  local
278 	assert(vma->priv);  in dri_bo_unmap()
279 	dri->image_extension->unmapImage(dri->context, bo->priv, vma->priv);  in dri_bo_unmap()
284 	 * "Not all DRI drivers use direct maps. They may queue up DMA operations  in dri_bo_unmap()
289 	dri->flush_extension->flush_with_flags(dri->context, NULL, __DRI2_FLUSH_CONTEXT, 0);  in dri_bo_unmap()