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// SPDX-License-Identifier: MIT
/*
* Copyright 2022 Advanced Micro Devices, Inc.
*/
#define pr_fmt(fmt) "drm_exec: " fmt
#include <kunit/test.h>
#include <linux/module.h>
#include <linux/prime_numbers.h>
#include <drm/drm_exec.h>
#include <drm/drm_device.h>
#include <drm/drm_drv.h>
#include <drm/drm_gem.h>
#include <drm/drm_kunit_helpers.h>
#include "../lib/drm_random.h"
struct drm_exec_priv {
struct device *dev;
struct drm_device *drm;
};
static int drm_exec_test_init(struct kunit *test)
{
struct drm_exec_priv *priv;
priv = kunit_kzalloc(test, sizeof(*priv), GFP_KERNEL);
KUNIT_ASSERT_NOT_ERR_OR_NULL(test, priv);
test->priv = priv;
priv->dev = drm_kunit_helper_alloc_device(test);
KUNIT_ASSERT_NOT_ERR_OR_NULL(test, priv->dev);
priv->drm = __drm_kunit_helper_alloc_drm_device(test, priv->dev, sizeof(*priv->drm), 0,
DRIVER_MODESET);
KUNIT_ASSERT_NOT_ERR_OR_NULL(test, priv->drm);
return 0;
}
static void sanitycheck(struct kunit *test)
{
struct drm_exec exec;
drm_exec_init(&exec, DRM_EXEC_INTERRUPTIBLE_WAIT, 0);
drm_exec_fini(&exec);
KUNIT_SUCCEED(test);
}
static void test_lock(struct kunit *test)
{
struct drm_exec_priv *priv = test->priv;
struct drm_gem_object gobj = { };
struct drm_exec exec;
int ret;
drm_gem_private_object_init(priv->drm, &gobj, PAGE_SIZE);
drm_exec_init(&exec, DRM_EXEC_INTERRUPTIBLE_WAIT, 0);
drm_exec_until_all_locked(&exec) {
ret = drm_exec_lock_obj(&exec, &gobj);
drm_exec_retry_on_contention(&exec);
KUNIT_EXPECT_EQ(test, ret, 0);
if (ret)
break;
}
drm_exec_fini(&exec);
}
static void test_lock_unlock(struct kunit *test)
{
struct drm_exec_priv *priv = test->priv;
struct drm_gem_object gobj = { };
struct drm_exec exec;
int ret;
drm_gem_private_object_init(priv->drm, &gobj, PAGE_SIZE);
drm_exec_init(&exec, DRM_EXEC_INTERRUPTIBLE_WAIT, 0);
drm_exec_until_all_locked(&exec) {
ret = drm_exec_lock_obj(&exec, &gobj);
drm_exec_retry_on_contention(&exec);
KUNIT_EXPECT_EQ(test, ret, 0);
if (ret)
break;
drm_exec_unlock_obj(&exec, &gobj);
ret = drm_exec_lock_obj(&exec, &gobj);
drm_exec_retry_on_contention(&exec);
KUNIT_EXPECT_EQ(test, ret, 0);
if (ret)
break;
}
drm_exec_fini(&exec);
}
static void test_duplicates(struct kunit *test)
{
struct drm_exec_priv *priv = test->priv;
struct drm_gem_object gobj = { };
struct drm_exec exec;
int ret;
drm_gem_private_object_init(priv->drm, &gobj, PAGE_SIZE);
drm_exec_init(&exec, DRM_EXEC_IGNORE_DUPLICATES, 0);
drm_exec_until_all_locked(&exec) {
ret = drm_exec_lock_obj(&exec, &gobj);
drm_exec_retry_on_contention(&exec);
KUNIT_EXPECT_EQ(test, ret, 0);
if (ret)
break;
ret = drm_exec_lock_obj(&exec, &gobj);
drm_exec_retry_on_contention(&exec);
KUNIT_EXPECT_EQ(test, ret, 0);
if (ret)
break;
}
drm_exec_unlock_obj(&exec, &gobj);
drm_exec_fini(&exec);
}
static void test_prepare(struct kunit *test)
{
struct drm_exec_priv *priv = test->priv;
struct drm_gem_object gobj = { };
struct drm_exec exec;
int ret;
drm_gem_private_object_init(priv->drm, &gobj, PAGE_SIZE);
drm_exec_init(&exec, DRM_EXEC_INTERRUPTIBLE_WAIT, 0);
drm_exec_until_all_locked(&exec) {
ret = drm_exec_prepare_obj(&exec, &gobj, 1);
drm_exec_retry_on_contention(&exec);
KUNIT_EXPECT_EQ(test, ret, 0);
if (ret)
break;
}
drm_exec_fini(&exec);
drm_gem_private_object_fini(&gobj);
}
static void test_prepare_array(struct kunit *test)
{
struct drm_exec_priv *priv = test->priv;
struct drm_gem_object gobj1 = { };
struct drm_gem_object gobj2 = { };
struct drm_gem_object *array[] = { &gobj1, &gobj2 };
struct drm_exec exec;
int ret;
drm_gem_private_object_init(priv->drm, &gobj1, PAGE_SIZE);
drm_gem_private_object_init(priv->drm, &gobj2, PAGE_SIZE);
drm_exec_init(&exec, DRM_EXEC_INTERRUPTIBLE_WAIT, 0);
drm_exec_until_all_locked(&exec)
ret = drm_exec_prepare_array(&exec, array, ARRAY_SIZE(array),
1);
KUNIT_EXPECT_EQ(test, ret, 0);
drm_exec_fini(&exec);
drm_gem_private_object_fini(&gobj1);
drm_gem_private_object_fini(&gobj2);
}
static void test_multiple_loops(struct kunit *test)
{
struct drm_exec exec;
drm_exec_init(&exec, DRM_EXEC_INTERRUPTIBLE_WAIT, 0);
drm_exec_until_all_locked(&exec)
{
break;
}
drm_exec_fini(&exec);
drm_exec_init(&exec, DRM_EXEC_INTERRUPTIBLE_WAIT, 0);
drm_exec_until_all_locked(&exec)
{
break;
}
drm_exec_fini(&exec);
KUNIT_SUCCEED(test);
}
static struct kunit_case drm_exec_tests[] = {
KUNIT_CASE(sanitycheck),
KUNIT_CASE(test_lock),
KUNIT_CASE(test_lock_unlock),
KUNIT_CASE(test_duplicates),
KUNIT_CASE(test_prepare),
KUNIT_CASE(test_prepare_array),
KUNIT_CASE(test_multiple_loops),
{}
};
static struct kunit_suite drm_exec_test_suite = {
.name = "drm_exec",
.init = drm_exec_test_init,
.test_cases = drm_exec_tests,
};
kunit_test_suite(drm_exec_test_suite);
MODULE_AUTHOR("AMD");
MODULE_LICENSE("GPL and additional rights");
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