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      1 /*	$NetBSD: i915_gem_object.c,v 1.2 2021/12/18 23:45:30 riastradh Exp $	*/
      2 
      3 /*
      4  * SPDX-License-Identifier: MIT
      5  *
      6  * Copyright  2016 Intel Corporation
      7  */
      8 
      9 #include <sys/cdefs.h>
     10 __KERNEL_RCSID(0, "$NetBSD: i915_gem_object.c,v 1.2 2021/12/18 23:45:30 riastradh Exp $");
     11 
     12 #include "i915_selftest.h"
     13 
     14 #include "huge_gem_object.h"
     15 #include "selftests/igt_flush_test.h"
     16 #include "selftests/mock_gem_device.h"
     17 
     18 static int igt_gem_object(void *arg)
     19 {
     20 	struct drm_i915_private *i915 = arg;
     21 	struct drm_i915_gem_object *obj;
     22 	int err = -ENOMEM;
     23 
     24 	/* Basic test to ensure we can create an object */
     25 
     26 	obj = i915_gem_object_create_shmem(i915, PAGE_SIZE);
     27 	if (IS_ERR(obj)) {
     28 		err = PTR_ERR(obj);
     29 		pr_err("i915_gem_object_create failed, err=%d\n", err);
     30 		goto out;
     31 	}
     32 
     33 	err = 0;
     34 	i915_gem_object_put(obj);
     35 out:
     36 	return err;
     37 }
     38 
     39 static int igt_gem_huge(void *arg)
     40 {
     41 	const unsigned int nreal = 509; /* just to be awkward */
     42 	struct drm_i915_private *i915 = arg;
     43 	struct drm_i915_gem_object *obj;
     44 	unsigned int n;
     45 	int err;
     46 
     47 	/* Basic sanitycheck of our huge fake object allocation */
     48 
     49 	obj = huge_gem_object(i915,
     50 			      nreal * PAGE_SIZE,
     51 			      i915->ggtt.vm.total + PAGE_SIZE);
     52 	if (IS_ERR(obj))
     53 		return PTR_ERR(obj);
     54 
     55 	err = i915_gem_object_pin_pages(obj);
     56 	if (err) {
     57 		pr_err("Failed to allocate %u pages (%lu total), err=%d\n",
     58 		       nreal, obj->base.size / PAGE_SIZE, err);
     59 		goto out;
     60 	}
     61 
     62 	for (n = 0; n < obj->base.size / PAGE_SIZE; n++) {
     63 		if (i915_gem_object_get_page(obj, n) !=
     64 		    i915_gem_object_get_page(obj, n % nreal)) {
     65 			pr_err("Page lookup mismatch at index %u [%u]\n",
     66 			       n, n % nreal);
     67 			err = -EINVAL;
     68 			goto out_unpin;
     69 		}
     70 	}
     71 
     72 out_unpin:
     73 	i915_gem_object_unpin_pages(obj);
     74 out:
     75 	i915_gem_object_put(obj);
     76 	return err;
     77 }
     78 
     79 int i915_gem_object_mock_selftests(void)
     80 {
     81 	static const struct i915_subtest tests[] = {
     82 		SUBTEST(igt_gem_object),
     83 	};
     84 	struct drm_i915_private *i915;
     85 	int err;
     86 
     87 	i915 = mock_gem_device();
     88 	if (!i915)
     89 		return -ENOMEM;
     90 
     91 	err = i915_subtests(tests, i915);
     92 
     93 	drm_dev_put(&i915->drm);
     94 	return err;
     95 }
     96 
     97 int i915_gem_object_live_selftests(struct drm_i915_private *i915)
     98 {
     99 	static const struct i915_subtest tests[] = {
    100 		SUBTEST(igt_gem_huge),
    101 	};
    102 
    103 	return i915_subtests(tests, i915);
    104 }
    105