drivers/gpu/drm/i915/selftests/mock_region.c

   1 // SPDX-License-Identifier: MIT
   2 /*
   3  * Copyright © 2019 Intel Corporation
   4  */
   5
   6 #include "gem/i915_gem_region.h"
   7 #include "intel_memory_region.h"
   8
   9 #include "mock_region.h"
  10
  11 static const struct drm_i915_gem_object_ops mock_region_obj_ops = {
  12         .name = "mock-region",
  13         .get_pages = i915_gem_object_get_pages_buddy,
  14         .put_pages = i915_gem_object_put_pages_buddy,
  15         .release = i915_gem_object_release_memory_region,
  16 };
  17
  18 static struct drm_i915_gem_object *
  19 mock_object_create(struct intel_memory_region *mem,
  20                    resource_size_t size,
  21                    unsigned int flags)
  22 {
  23         static struct lock_class_key lock_class;
  24         struct drm_i915_private *i915 = mem->i915;
  25         struct drm_i915_gem_object *obj;
  26
  27         if (size > mem->mm.size)
  28                 return ERR_PTR(-E2BIG);
  29
  30         obj = i915_gem_object_alloc();
  31         if (!obj)
  32                 return ERR_PTR(-ENOMEM);
  33
  34         drm_gem_private_object_init(&i915->drm, &obj->base, size);
  35         i915_gem_object_init(obj, &mock_region_obj_ops, &lock_class);
  36
  37         obj->read_domains = I915_GEM_DOMAIN_CPU | I915_GEM_DOMAIN_GTT;
  38
  39         i915_gem_object_set_cache_coherency(obj, I915_CACHE_NONE);
  40
  41         i915_gem_object_init_memory_region(obj, mem, flags);
  42
  43         return obj;
  44 }
  45
  46 static const struct intel_memory_region_ops mock_region_ops = {
  47         .init = intel_memory_region_init_buddy,
  48         .release = intel_memory_region_release_buddy,
  49         .create_object = mock_object_create,
  50 };
  51
  52 struct intel_memory_region *
  53 mock_region_create(struct drm_i915_private *i915,
  54                    resource_size_t start,
  55                    resource_size_t size,
  56                    resource_size_t min_page_size,
  57                    resource_size_t io_start)
  58 {
  59         return intel_memory_region_create(i915, start, size, min_page_size,
  60                                           io_start, &mock_region_ops);
  61 }