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drm/i915: use common functions for mmap offset creation 

Signed-off-by: Rob Clark <rob@ti.com>
Signed-off-by: Dave Airlie <airlied@redhat.com>
This commit is contained in:
Rob Clark 2011-08-10 08:09:08 -05:00 committed by Dave Airlie
parent 75ef8b3b9c
commit b464e9a25c
1 changed files with 2 additions and 83 deletions
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85
drivers/gpu/drm/i915/i915_gem.c
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@ -1264,74 +1264,6 @@ out:
}
}
/**
* i915_gem_create_mmap_offset - create a fake mmap offset for an object
* @obj: obj in question
*
* GEM memory mapping works by handing back to userspace a fake mmap offset
* it can use in a subsequent mmap(2) call. The DRM core code then looks
* up the object based on the offset and sets up the various memory mapping
* structures.
*
* This routine allocates and attaches a fake offset for @obj.
*/
static int
i915_gem_create_mmap_offset(struct drm_i915_gem_object *obj)
{
struct drm_device *dev = obj->base.dev;
struct drm_gem_mm *mm = dev->mm_private;
struct drm_map_list *list;
struct drm_local_map *map;
int ret = 0;
/* Set the object up for mmap'ing */
list = &obj->base.map_list;
list->map = kzalloc(sizeof(struct drm_map_list), GFP_KERNEL);
if (!list->map)
return -ENOMEM;
map = list->map;
map->type = _DRM_GEM;
map->size = obj->base.size;
map->handle = obj;
/* Get a DRM GEM mmap offset allocated... */
list->file_offset_node = drm_mm_search_free(&mm->offset_manager,
obj->base.size / PAGE_SIZE,
0, 0);
if (!list->file_offset_node) {
DRM_ERROR("failed to allocate offset for bo %d\n",
obj->base.name);
ret = -ENOSPC;
goto out_free_list;
}
list->file_offset_node = drm_mm_get_block(list->file_offset_node,
obj->base.size / PAGE_SIZE,
0);
if (!list->file_offset_node) {
ret = -ENOMEM;
goto out_free_list;
}
list->hash.key = list->file_offset_node->start;
ret = drm_ht_insert_item(&mm->offset_hash, &list->hash);
if (ret) {
DRM_ERROR("failed to add to map hash\n");
goto out_free_mm;
}
return 0;
out_free_mm:
drm_mm_put_block(list->file_offset_node);
out_free_list:
kfree(list->map);
list->map = NULL;
return ret;
}
/**
* i915_gem_release_mmap - remove physical page mappings
* @obj: obj in question
@ -1360,19 +1292,6 @@ i915_gem_release_mmap(struct drm_i915_gem_object *obj)
obj->fault_mappable = false;
}
static void
i915_gem_free_mmap_offset(struct drm_i915_gem_object *obj)
{
struct drm_device *dev = obj->base.dev;
struct drm_gem_mm *mm = dev->mm_private;
struct drm_map_list *list = &obj->base.map_list;
drm_ht_remove_item(&mm->offset_hash, &list->hash);
drm_mm_put_block(list->file_offset_node);
kfree(list->map);
list->map = NULL;
}
static uint32_t
i915_gem_get_gtt_size(struct drm_device *dev, uint32_t size, int tiling_mode)
{
@ -1485,7 +1404,7 @@ i915_gem_mmap_gtt(struct drm_file *file,
}
if (!obj->base.map_list.map) {
ret = i915_gem_create_mmap_offset(obj);
ret = drm_gem_create_mmap_offset(&obj->base);
if (ret)
goto out;
}
@ -3752,7 +3671,7 @@ static void i915_gem_free_object_tail(struct drm_i915_gem_object *obj)
trace_i915_gem_object_destroy(obj);
if (obj->base.map_list.map)
i915_gem_free_mmap_offset(obj);
drm_gem_free_mmap_offset(&obj->base);
drm_gem_object_release(&obj->base);
i915_gem_info_remove_obj(dev_priv, obj->base.size);