struct drm_gem_object *msm_gem_new(struct drm_device *dev,
uint32_t size, uint32_t flags)
{
struct drm_gem_object *obj = NULL;
int ret;
WARN_ON(!mutex_is_locked(&dev->struct_mutex));
size = PAGE_ALIGN(size);
ret = msm_gem_new_impl(dev, size, flags, NULL, &obj);
if (ret)
goto fail;
if (use_pages(obj)) {
ret = drm_gem_object_init(dev, obj, size);
if (ret)
goto fail;
} else {
drm_gem_private_object_init(dev, obj, size);
}
return obj;
fail:
drm_gem_object_unreference(obj);
return ERR_PTR(ret);
}
static void put_pages(struct drm_gem_object *obj)
{
struct msm_gem_object *msm_obj = to_msm_bo(obj);
if (msm_obj->pages) {
/* For non-cached buffers, ensure the new pages are clean
* because display controller, GPU, etc. are not coherent:
*/
if (msm_obj->flags & (MSM_BO_WC|MSM_BO_UNCACHED))
dma_unmap_sg(obj->dev->dev, msm_obj->sgt->sgl,
msm_obj->sgt->nents, DMA_BIDIRECTIONAL);
sg_free_table(msm_obj->sgt);
kfree(msm_obj->sgt);
if (use_pages(obj))
drm_gem_put_pages(obj, msm_obj->pages, true, false);
else {
drm_mm_remove_node(msm_obj->vram_node);
drm_free_large(msm_obj->pages);
}
msm_obj->pages = NULL;
}
}
