1/*	$NetBSD: i915_gem_lmem.c,v 1.2 2021/12/18 23:45:30 riastradh Exp $	*/
2
3// SPDX-License-Identifier: MIT
4/*
5 * Copyright �� 2019 Intel Corporation
6 */
7
8#include <sys/cdefs.h>
9__KERNEL_RCSID(0, "$NetBSD: i915_gem_lmem.c,v 1.2 2021/12/18 23:45:30 riastradh Exp $");
10
11#include "intel_memory_region.h"
12#include "gem/i915_gem_region.h"
13#include "gem/i915_gem_lmem.h"
14#include "i915_drv.h"
15
16const struct drm_i915_gem_object_ops i915_gem_lmem_obj_ops = {
17	.flags = I915_GEM_OBJECT_HAS_IOMEM,
18
19	.get_pages = i915_gem_object_get_pages_buddy,
20	.put_pages = i915_gem_object_put_pages_buddy,
21	.release = i915_gem_object_release_memory_region,
22};
23
24bool i915_gem_object_is_lmem(struct drm_i915_gem_object *obj)
25{
26	return obj->ops == &i915_gem_lmem_obj_ops;
27}
28
29struct drm_i915_gem_object *
30i915_gem_object_create_lmem(struct drm_i915_private *i915,
31			    resource_size_t size,
32			    unsigned int flags)
33{
34	return i915_gem_object_create_region(i915->mm.regions[INTEL_REGION_LMEM],
35					     size, flags);
36}
37
38struct drm_i915_gem_object *
39__i915_gem_lmem_object_create(struct intel_memory_region *mem,
40			      resource_size_t size,
41			      unsigned int flags)
42{
43	static struct lock_class_key lock_class;
44	struct drm_i915_private *i915 = mem->i915;
45	struct drm_i915_gem_object *obj;
46
47	obj = i915_gem_object_alloc();
48	if (!obj)
49		return ERR_PTR(-ENOMEM);
50
51	drm_gem_private_object_init(&i915->drm, &obj->base, size);
52	i915_gem_object_init(obj, &i915_gem_lmem_obj_ops, &lock_class);
53
54	obj->read_domains = I915_GEM_DOMAIN_WC | I915_GEM_DOMAIN_GTT;
55
56	i915_gem_object_set_cache_coherency(obj, I915_CACHE_NONE);
57
58	i915_gem_object_init_memory_region(obj, mem, flags);
59
60	return obj;
61}
62