88 lines
1.9 KiB
C
88 lines
1.9 KiB
C
/*
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* SPDX-License-Identifier: MIT
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*
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* Copyright © 2016 Intel Corporation
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*/
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#include "i915_selftest.h"
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#include "selftests/mock_gem_device.h"
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static int mock_phys_object(void *arg)
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{
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struct drm_i915_private *i915 = arg;
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struct drm_i915_gem_object *obj;
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int err;
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/* Create an object and bind it to a contiguous set of physical pages,
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* i.e. exercise the i915_gem_object_phys API.
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*/
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obj = i915_gem_object_create_shmem(i915, PAGE_SIZE);
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if (IS_ERR(obj)) {
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err = PTR_ERR(obj);
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pr_err("i915_gem_object_create failed, err=%d\n", err);
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goto out;
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}
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i915_gem_object_lock(obj, NULL);
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if (!i915_gem_object_has_struct_page(obj)) {
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i915_gem_object_unlock(obj);
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err = -EINVAL;
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pr_err("shmem has no struct page\n");
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goto out_obj;
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}
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err = i915_gem_object_attach_phys(obj, PAGE_SIZE);
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i915_gem_object_unlock(obj);
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if (err) {
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pr_err("i915_gem_object_attach_phys failed, err=%d\n", err);
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goto out_obj;
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}
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if (i915_gem_object_has_struct_page(obj)) {
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pr_err("i915_gem_object_attach_phys did not create a phys object\n");
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err = -EINVAL;
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goto out_obj;
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}
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if (!atomic_read(&obj->mm.pages_pin_count)) {
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pr_err("i915_gem_object_attach_phys did not pin its phys pages\n");
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err = -EINVAL;
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goto out_obj;
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}
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/* Make the object dirty so that put_pages must do copy back the data */
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i915_gem_object_lock(obj, NULL);
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err = i915_gem_object_set_to_gtt_domain(obj, true);
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i915_gem_object_unlock(obj);
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if (err) {
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pr_err("i915_gem_object_set_to_gtt_domain failed with err=%d\n",
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err);
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goto out_obj;
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}
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out_obj:
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i915_gem_object_put(obj);
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out:
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return err;
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}
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int i915_gem_phys_mock_selftests(void)
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{
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static const struct i915_subtest tests[] = {
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SUBTEST(mock_phys_object),
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};
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struct drm_i915_private *i915;
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int err;
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i915 = mock_gem_device();
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if (!i915)
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return -ENOMEM;
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err = i915_subtests(tests, i915);
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mock_destroy_device(i915);
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return err;
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}
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