1 /* $NetBSD: mock_region.c,v 1.2 2021/12/18 23:45:31 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: mock_region.c,v 1.2 2021/12/18 23:45:31 riastradh Exp $");
10
11 #include "gem/i915_gem_region.h"
12 #include "intel_memory_region.h"
13
14 #include "mock_region.h"
15
16 static const struct drm_i915_gem_object_ops mock_region_obj_ops = {
17 .get_pages = i915_gem_object_get_pages_buddy,
18 .put_pages = i915_gem_object_put_pages_buddy,
19 .release = i915_gem_object_release_memory_region,
20 };
21
22 static struct drm_i915_gem_object *
mock_object_create(struct intel_memory_region * mem,resource_size_t size,unsigned int flags)23 mock_object_create(struct intel_memory_region *mem,
24 resource_size_t size,
25 unsigned int flags)
26 {
27 static struct lock_class_key lock_class;
28 struct drm_i915_private *i915 = mem->i915;
29 struct drm_i915_gem_object *obj;
30
31 if (size > BIT(mem->mm.max_order) * mem->mm.chunk_size)
32 return ERR_PTR(-E2BIG);
33
34 obj = i915_gem_object_alloc();
35 if (!obj)
36 return ERR_PTR(-ENOMEM);
37
38 drm_gem_private_object_init(&i915->drm, &obj->base, size);
39 i915_gem_object_init(obj, &mock_region_obj_ops, &lock_class);
40
41 obj->read_domains = I915_GEM_DOMAIN_CPU | I915_GEM_DOMAIN_GTT;
42
43 i915_gem_object_set_cache_coherency(obj, I915_CACHE_NONE);
44
45 i915_gem_object_init_memory_region(obj, mem, flags);
46
47 return obj;
48 }
49
50 static const struct intel_memory_region_ops mock_region_ops = {
51 .init = intel_memory_region_init_buddy,
52 .release = intel_memory_region_release_buddy,
53 .create_object = mock_object_create,
54 };
55
56 struct intel_memory_region *
mock_region_create(struct drm_i915_private * i915,resource_size_t start,resource_size_t size,resource_size_t min_page_size,resource_size_t io_start)57 mock_region_create(struct drm_i915_private *i915,
58 resource_size_t start,
59 resource_size_t size,
60 resource_size_t min_page_size,
61 resource_size_t io_start)
62 {
63 return intel_memory_region_create(i915, start, size, min_page_size,
64 io_start, &mock_region_ops);
65 }
66