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