root/drivers/gpu/drm/i915/gem/selftests/i915_gem_object.c

DEFINITIONS

1. igt_gem_object
2. igt_gem_huge
3. i915_gem_object_mock_selftests
4. i915_gem_object_live_selftests

   1 /*
   2  * SPDX-License-Identifier: MIT
   3  *
   4  * Copyright © 2016 Intel Corporation
   5  */
   6 
   7 #include "i915_selftest.h"
   8 
   9 #include "huge_gem_object.h"
  10 #include "selftests/igt_flush_test.h"
  11 #include "selftests/mock_gem_device.h"
  12 
  13 static int igt_gem_object(void *arg)
  14 {
  15         struct drm_i915_private *i915 = arg;
  16         struct drm_i915_gem_object *obj;
  17         int err = -ENOMEM;
  18 
  19         /* Basic test to ensure we can create an object */
  20 
  21         obj = i915_gem_object_create_shmem(i915, PAGE_SIZE);
  22         if (IS_ERR(obj)) {
  23                 err = PTR_ERR(obj);
  24                 pr_err("i915_gem_object_create failed, err=%d\n", err);
  25                 goto out;
  26         }
  27 
  28         err = 0;
  29         i915_gem_object_put(obj);
  30 out:
  31         return err;
  32 }
  33 
  34 static int igt_gem_huge(void *arg)
  35 {
  36         const unsigned int nreal = 509; /* just to be awkward */
  37         struct drm_i915_private *i915 = arg;
  38         struct drm_i915_gem_object *obj;
  39         unsigned int n;
  40         int err;
  41 
  42         /* Basic sanitycheck of our huge fake object allocation */
  43 
  44         obj = huge_gem_object(i915,
  45                               nreal * PAGE_SIZE,
  46                               i915->ggtt.vm.total + PAGE_SIZE);
  47         if (IS_ERR(obj))
  48                 return PTR_ERR(obj);
  49 
  50         err = i915_gem_object_pin_pages(obj);
  51         if (err) {
  52                 pr_err("Failed to allocate %u pages (%lu total), err=%d\n",
  53                        nreal, obj->base.size / PAGE_SIZE, err);
  54                 goto out;
  55         }
  56 
  57         for (n = 0; n < obj->base.size / PAGE_SIZE; n++) {
  58                 if (i915_gem_object_get_page(obj, n) !=
  59                     i915_gem_object_get_page(obj, n % nreal)) {
  60                         pr_err("Page lookup mismatch at index %u [%u]\n",
  61                                n, n % nreal);
  62                         err = -EINVAL;
  63                         goto out_unpin;
  64                 }
  65         }
  66 
  67 out_unpin:
  68         i915_gem_object_unpin_pages(obj);
  69 out:
  70         i915_gem_object_put(obj);
  71         return err;
  72 }
  73 
  74 int i915_gem_object_mock_selftests(void)
  75 {
  76         static const struct i915_subtest tests[] = {
  77                 SUBTEST(igt_gem_object),
  78         };
  79         struct drm_i915_private *i915;
  80         int err;
  81 
  82         i915 = mock_gem_device();
  83         if (!i915)
  84                 return -ENOMEM;
  85 
  86         err = i915_subtests(tests, i915);
  87 
  88         drm_dev_put(&i915->drm);
  89         return err;
  90 }
  91 
  92 int i915_gem_object_live_selftests(struct drm_i915_private *i915)
  93 {
  94         static const struct i915_subtest tests[] = {
  95                 SUBTEST(igt_gem_huge),
  96         };
  97 
  98         return i915_subtests(tests, i915);
  99 }