static int psb_gem_create_stolen(struct drm_file *file, struct drm_device *dev,
int size, u32 *handle)
{
struct gtt_range *gtt = psb_gtt_alloc_range(dev, size, "gem", 1);
if (gtt == NULL)
return -ENOMEM;
if (drm_gem_private_object_init(dev, >t->gem, size) != 0)
goto free_gtt;
if (drm_gem_handle_create(file, >t->gem, handle) == 0)
return 0;
free_gtt:
psb_gtt_free_range(dev, gtt);
return -ENOMEM;
}
/**
* psb_gem_create - create a mappable object
* @file: the DRM file of the client
* @dev: our device
* @size: the size requested
* @handlep: returned handle (opaque number)
*
* Create a GEM object, fill in the boilerplate and attach a handle to
* it so that userspace can speak about it. This does the core work
* for the various methods that do/will create GEM objects for things
*/
static int psb_gem_create(struct drm_file *file,
struct drm_device *dev, uint64_t size, uint32_t *handlep)
{
struct gtt_range *r;
int ret;
u32 handle;
size = roundup(size, PAGE_SIZE);
/* Allocate our object - for now a direct gtt range which is not
stolen memory backed */
r = psb_gtt_alloc_range(dev, size, "gem", 0);
if (r == NULL) {
dev_err(dev->dev, "no memory for %lld byte GEM object\n", size);
return -ENOSPC;
}
/* Initialize the extra goodies GEM needs to do all the hard work */
if (drm_gem_object_init(dev, &r->gem, size) != 0) {
psb_gtt_free_range(dev, r);
/* GEM doesn't give an error code so use -ENOMEM */
dev_err(dev->dev, "GEM init failed for %lld\n", size);
return -ENOMEM;
}
/* Limit the object to 32bit mappings */
mapping_set_gfp_mask(r->gem.filp->f_mapping, GFP_KERNEL | __GFP_DMA32);
/* Give the object a handle so we can carry it more easily */
ret = drm_gem_handle_create(file, &r->gem, &handle);
if (ret) {
dev_err(dev->dev, "GEM handle failed for %p, %lld\n",
&r->gem, size);
drm_gem_object_release(&r->gem);
psb_gtt_free_range(dev, r);
return ret;
}
/* We have the initial and handle reference but need only one now */
drm_gem_object_unreference(&r->gem);
*handlep = handle;
return 0;
}