static int ttm_agp_bind(struct ttm_tt *ttm, struct ttm_mem_reg *bo_mem)
{
struct ttm_agp_backend *agp_be = container_of(ttm, struct ttm_agp_backend, ttm);
struct drm_mm_node *node = bo_mem->mm_node;
struct agp_memory *mem;
int ret, cached = (bo_mem->placement & TTM_PL_FLAG_CACHED);
unsigned i;
mem = agp_alloc_memory(agp_be->bridge, AGP_USER_MEMORY, ttm->num_pages);
if (unlikely(mem == NULL))
return -ENOMEM;
mem->page_count = 0;
for (i = 0; i < ttm->num_pages; i++) {
vm_page_t page = ttm->pages[i];
if (!page)
page = ttm->dummy_read_page;
mem->pages[mem->page_count++] = page;
}
agp_be->mem = mem;
mem->is_flushed = 1;
mem->type = (cached) ? AGP_USER_CACHED_MEMORY : AGP_USER_MEMORY;
ret = agp_bind_memory(mem, node->start);
if (ret)
pr_err("AGP Bind memory failed\n");
return ret;
}
int drm_agp_bind_memory(void *handle, off_t start)
{
device_t agpdev;
agpdev = DRM_AGP_FIND_DEVICE();
if (!agpdev || !handle)
return EINVAL;
return agp_bind_memory(agpdev, handle, start * PAGE_SIZE);
}
static int agpioc_bind_wrap(agp_file_private * priv, unsigned long arg)
{
agp_bind bind_info;
agp_memory *memory;
if (copy_from_user(&bind_info, (void *) arg, sizeof(agp_bind))) {
return -EFAULT;
}
memory = agp_find_mem_by_key(bind_info.key);
if (memory == NULL) {
return -EINVAL;
}
return agp_bind_memory(memory, bind_info.pg_start);
}
static int compat_agpioc_bind_wrap(struct agp_file_private *priv, void __user *arg)
{
struct agp_bind32 bind_info;
struct agp_memory *memory;
DBG("");
if (copy_from_user(&bind_info, arg, sizeof(bind_info)))
return -EFAULT;
memory = agp_find_mem_by_key(bind_info.key);
if (memory == NULL)
return -EINVAL;
return agp_bind_memory(memory, bind_info.pg_start);
}
/** Wrapper around agp_bind_memory() */
int drm_bind_agp(DRM_AGP_MEM * handle, unsigned int start)
{
return agp_bind_memory(handle, start);
}
/** Calls agp_bind_memory() */
int drm_agp_bind_memory(DRM_AGP_MEM *handle, off_t start)
{
if (!handle)
return -EINVAL;
return agp_bind_memory(handle, start);
}
