1 // SPDX-License-Identifier: GPL-2.0+
6 #include <linux/dma-buf.h>
22 	dma_resv_assert_held(obj->resv);  in lsdc_gem_prime_pin()
26 		lbo->sharing_count++;  in lsdc_gem_prime_pin()
35 	dma_resv_assert_held(obj->resv);  in lsdc_gem_prime_unpin()
38 	if (lbo->sharing_count)  in lsdc_gem_prime_unpin()
39 		lbo->sharing_count--;  in lsdc_gem_prime_unpin()
45 	struct ttm_tt *tt = tbo->ttm;  in lsdc_gem_prime_get_sg_table()  local
47 	if (!tt) {  in lsdc_gem_prime_get_sg_table()
48 		drm_err(obj->dev, "sharing a buffer without backing memory\n");  in lsdc_gem_prime_get_sg_table()
49 		return ERR_PTR(-ENOMEM);  in lsdc_gem_prime_get_sg_table()
52 	return drm_prime_pages_to_sg(obj->dev, tt->pages, tt->num_pages);  in lsdc_gem_prime_get_sg_table()
69 	if (lbo->vmap_count > 0) {  in lsdc_gem_object_vmap()
70 		++lbo->vmap_count;  in lsdc_gem_object_vmap()
76 		drm_err(obj->dev, "pin %p for vmap failed\n", lbo);  in lsdc_gem_object_vmap()
80 	ret = ttm_bo_vmap(tbo, &lbo->map);  in lsdc_gem_object_vmap()
82 		drm_err(obj->dev, "ttm bo vmap failed\n");  in lsdc_gem_object_vmap()
87 	lbo->vmap_count = 1;  in lsdc_gem_object_vmap()
90 	*map = lbo->map;  in lsdc_gem_object_vmap()
100 	if (unlikely(!lbo->vmap_count)) {  in lsdc_gem_object_vunmap()
101 		drm_warn(obj->dev, "%p is not mapped\n", lbo);  in lsdc_gem_object_vunmap()
105 	--lbo->vmap_count;  in lsdc_gem_object_vunmap()
106 	if (lbo->vmap_count == 0) {  in lsdc_gem_object_vunmap()
107 		ttm_bo_vunmap(tbo, &lbo->map);  in lsdc_gem_object_vunmap()
120 		drm_warn(obj->dev, "mmap %p failed\n", tbo);  in lsdc_gem_object_mmap()
163 	gobj = &lbo->tbo.base;  in lsdc_gem_object_create()
164 	gobj->funcs = &lsdc_gem_object_funcs;  in lsdc_gem_object_create()
167 	mutex_lock(&ldev->gem.mutex);  in lsdc_gem_object_create()
168 	list_add_tail(&lbo->list, &ldev->gem.objects);  in lsdc_gem_object_create()
169 	mutex_unlock(&ldev->gem.mutex);  in lsdc_gem_object_create()
179 	struct dma_resv *resv = attach->dmabuf->resv;  in lsdc_prime_import_sg_table()
180 	u64 size = attach->dmabuf->size;  in lsdc_prime_import_sg_table()
195 	lbo->sharing_count = 1;  in lsdc_prime_import_sg_table()
204 	const struct lsdc_desc *descp = ldev->descp;  in lsdc_dumb_create()
212 	if (!args->width || !args->height)  in lsdc_dumb_create()
213 		return -EINVAL;  in lsdc_dumb_create()
215 	if (args->bpp != 32 && args->bpp != 16)  in lsdc_dumb_create()
216 		return -EINVAL;  in lsdc_dumb_create()
218 	pitch = args->width * args->bpp / 8;  in lsdc_dumb_create()
219 	pitch = ALIGN(pitch, descp->pitch_align);  in lsdc_dumb_create()
220 	size = pitch * args->height;  in lsdc_dumb_create()
223 	/* Maximum single bo size allowed is the half vram size available */  in lsdc_dumb_create()
224 	if (size > ldev->vram_size / 2) {  in lsdc_dumb_create()
226 		return -ENOMEM;  in lsdc_dumb_create()
242 	args->pitch = pitch;  in lsdc_dumb_create()
243 	args->size = size;  in lsdc_dumb_create()
244 	args->handle = handle;  in lsdc_dumb_create()
256 		return -ENOENT;  in lsdc_dumb_map_offset()
258 	*offset = drm_vma_node_offset_addr(&gobj->vma_node);  in lsdc_dumb_map_offset()
269 	mutex_init(&ldev->gem.mutex);  in lsdc_gem_init()
270 	INIT_LIST_HEAD(&ldev->gem.objects);  in lsdc_gem_init()
275 	struct drm_info_node *node = (struct drm_info_node *)m->private;  in lsdc_show_buffer_object()
276 	struct drm_device *ddev = node->minor->dev;  in lsdc_show_buffer_object()
281 	mutex_lock(&ldev->gem.mutex);  in lsdc_show_buffer_object()
285 	list_for_each_entry(lbo, &ldev->gem.objects, list) {  in lsdc_show_buffer_object()
286 		struct ttm_buffer_object *tbo = &lbo->tbo;  in lsdc_show_buffer_object()
287 		struct ttm_resource *resource = tbo->resource;  in lsdc_show_buffer_object()
291 			   lsdc_mem_type_to_str(resource->mem_type),  in lsdc_show_buffer_object()
296 	mutex_unlock(&ldev->gem.mutex);  in lsdc_show_buffer_object()
299 		   ldev->vram_pinned_size >> 10, ldev->gtt_pinned_size >> 10);  in lsdc_show_buffer_object()