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
16 const 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
i915_gem_object_is_lmem(struct drm_i915_gem_object * obj)24 bool i915_gem_object_is_lmem(struct drm_i915_gem_object *obj)
25 {
26 return obj->ops == &i915_gem_lmem_obj_ops;
27 }
28
29 struct drm_i915_gem_object *
i915_gem_object_create_lmem(struct drm_i915_private * i915,resource_size_t size,unsigned int flags)30 i915_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
38 struct drm_i915_gem_object *
__i915_gem_lmem_object_create(struct intel_memory_region * mem,resource_size_t size,unsigned int flags)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