C++ (Cpp) udl_gem_alloc_object Examples

Example #1

File: udl_gem.c Project: BWhitten/linux-stable

static int
udl_gem_create(struct drm_file *file,
	       struct drm_device *dev,
	       uint64_t size,
	       uint32_t *handle_p)
{
	struct udl_gem_object *obj;
	int ret;
	u32 handle;

	size = roundup(size, PAGE_SIZE);

	obj = udl_gem_alloc_object(dev, size);
	if (obj == NULL)
		return -ENOMEM;

	ret = drm_gem_handle_create(file, &obj->base, &handle);
	if (ret) {
		drm_gem_object_release(&obj->base);
		kfree(obj);
		return ret;
	}

	drm_gem_object_unreference_unlocked(&obj->base);
	*handle_p = handle;
	return 0;
}

Example #2

static int udl_prime_create(struct drm_device *dev,
			    size_t size,
			    struct sg_table *sg,
			    struct udl_gem_object **obj_p)
{
	struct udl_gem_object *obj;
	int npages;

	npages = size / PAGE_SIZE;

	*obj_p = NULL;
	obj = udl_gem_alloc_object(dev, npages * PAGE_SIZE);
	if (!obj)
		return -ENOMEM;

	obj->sg = sg;
	obj->pages = drm_malloc_ab(npages, sizeof(struct page *));
	if (obj->pages == NULL) {
		DRM_ERROR("obj pages is NULL %d\n", npages);
		return -ENOMEM;
	}

	drm_prime_sg_to_page_addr_arrays(sg, obj->pages, NULL, npages);

	*obj_p = obj;
	return 0;
}

Example #3

File: udl_gem.c Project: bossino/panda_es_kernel

static int udl_prime_create(struct drm_device *dev,
			    size_t size,
			    struct sg_table *sg,
			    struct udl_gem_object **obj_p)
{
	struct udl_gem_object *obj;
	int npages;
	int i;
	struct scatterlist *iter;

	npages = size / PAGE_SIZE;

	*obj_p = NULL;
	obj = udl_gem_alloc_object(dev, npages * PAGE_SIZE);
	if (!obj)
		return -ENOMEM;

	obj->sg = sg;
	obj->pages = drm_malloc_ab(npages, sizeof(struct page *));
	if (obj->pages == NULL) {
		DRM_ERROR("obj pages is NULL %d\n", npages);
		return -ENOMEM;
	}

	for_each_sg(sg->sgl, iter, npages, i)
		obj->pages[i] = sg_page(iter);

	*obj_p = obj;
	return 0;
}

Example #4

File: udl_fb.c Project: TheDarkCode/linux

static int udlfb_create(struct drm_fb_helper *helper,
			struct drm_fb_helper_surface_size *sizes)
{
	struct udl_fbdev *ufbdev =
		container_of(helper, struct udl_fbdev, helper);
	struct drm_device *dev = ufbdev->helper.dev;
	struct fb_info *info;
	struct drm_framebuffer *fb;
	struct drm_mode_fb_cmd2 mode_cmd;
	struct udl_gem_object *obj;
	uint32_t size;
	int ret = 0;

	if (sizes->surface_bpp == 24)
		sizes->surface_bpp = 32;

	mode_cmd.width = sizes->surface_width;
	mode_cmd.height = sizes->surface_height;
	mode_cmd.pitches[0] = mode_cmd.width * ((sizes->surface_bpp + 7) / 8);

	mode_cmd.pixel_format = drm_mode_legacy_fb_format(sizes->surface_bpp,
							  sizes->surface_depth);

	size = mode_cmd.pitches[0] * mode_cmd.height;
	size = ALIGN(size, PAGE_SIZE);

	obj = udl_gem_alloc_object(dev, size);
	if (!obj)
		goto out;

	ret = udl_gem_vmap(obj);
	if (ret) {
		DRM_ERROR("failed to vmap fb\n");
		goto out_gfree;
	}

	info = drm_fb_helper_alloc_fbi(helper);
	if (IS_ERR(info)) {
		ret = PTR_ERR(info);
		goto out_gfree;
	}
	info->par = ufbdev;

	ret = udl_framebuffer_init(dev, &ufbdev->ufb, &mode_cmd, obj);
	if (ret)
		goto out_destroy_fbi;

	fb = &ufbdev->ufb.base;

	ufbdev->helper.fb = fb;

	strcpy(info->fix.id, "udldrmfb");

	info->screen_base = ufbdev->ufb.obj->vmapping;
	info->fix.smem_len = size;
	info->fix.smem_start = (unsigned long)ufbdev->ufb.obj->vmapping;

	info->flags = FBINFO_DEFAULT | FBINFO_CAN_FORCE_OUTPUT;
	info->fbops = &udlfb_ops;
	drm_fb_helper_fill_fix(info, fb->pitches[0], fb->depth);
	drm_fb_helper_fill_var(info, &ufbdev->helper, sizes->fb_width, sizes->fb_height);

	DRM_DEBUG_KMS("allocated %dx%d vmal %p\n",
		      fb->width, fb->height,
		      ufbdev->ufb.obj->vmapping);

	return ret;
out_destroy_fbi:
	drm_fb_helper_release_fbi(helper);
out_gfree:
	drm_gem_object_unreference_unlocked(&ufbdev->ufb.obj->base);
out:
	return ret;
}