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// SPDX-License-Identifier: GPL-2.0 AND MIT
/*
* Copyright © 2023 Intel Corporation
*/
#include <drm/ttm/ttm_resource.h>
#include <drm/ttm/ttm_device.h>
#include <drm/ttm/ttm_placement.h>
#include "ttm_kunit_helpers.h"
struct ttm_device_test_case {
const char *description;
bool use_dma_alloc;
bool use_dma32;
bool pools_init_expected;
};
static void ttm_device_init_basic(struct kunit *test)
{
struct ttm_test_devices *priv = test->priv;
struct ttm_device *ttm_dev;
struct ttm_resource_manager *ttm_sys_man;
int err;
ttm_dev = kunit_kzalloc(test, sizeof(*ttm_dev), GFP_KERNEL);
KUNIT_ASSERT_NOT_NULL(test, ttm_dev);
err = ttm_device_kunit_init(priv, ttm_dev, false, false);
KUNIT_ASSERT_EQ(test, err, 0);
KUNIT_EXPECT_PTR_EQ(test, ttm_dev->funcs, &ttm_dev_funcs);
KUNIT_ASSERT_NOT_NULL(test, ttm_dev->wq);
KUNIT_ASSERT_NOT_NULL(test, ttm_dev->man_drv[TTM_PL_SYSTEM]);
ttm_sys_man = &ttm_dev->sysman;
KUNIT_ASSERT_NOT_NULL(test, ttm_sys_man);
KUNIT_EXPECT_TRUE(test, ttm_sys_man->use_tt);
KUNIT_EXPECT_TRUE(test, ttm_sys_man->use_type);
KUNIT_ASSERT_NOT_NULL(test, ttm_sys_man->func);
KUNIT_EXPECT_PTR_EQ(test, ttm_dev->dev_mapping,
priv->drm->anon_inode->i_mapping);
ttm_device_fini(ttm_dev);
}
static void ttm_device_init_multiple(struct kunit *test)
{
struct ttm_test_devices *priv = test->priv;
struct ttm_device *ttm_devs;
unsigned int i, num_dev = 3;
int err;
ttm_devs = kunit_kcalloc(test, num_dev, sizeof(*ttm_devs), GFP_KERNEL);
KUNIT_ASSERT_NOT_NULL(test, ttm_devs);
for (i = 0; i < num_dev; i++) {
err = ttm_device_kunit_init(priv, &ttm_devs[i], false, false);
KUNIT_ASSERT_EQ(test, err, 0);
KUNIT_EXPECT_PTR_EQ(test, ttm_devs[i].dev_mapping,
priv->drm->anon_inode->i_mapping);
KUNIT_ASSERT_NOT_NULL(test, ttm_devs[i].wq);
KUNIT_EXPECT_PTR_EQ(test, ttm_devs[i].funcs, &ttm_dev_funcs);
KUNIT_ASSERT_NOT_NULL(test, ttm_devs[i].man_drv[TTM_PL_SYSTEM]);
}
KUNIT_ASSERT_EQ(test, list_count_nodes(&ttm_devs[0].device_list), num_dev);
for (i = 0; i < num_dev; i++)
ttm_device_fini(&ttm_devs[i]);
}
static void ttm_device_fini_basic(struct kunit *test)
{
struct ttm_test_devices *priv = test->priv;
struct ttm_device *ttm_dev;
struct ttm_resource_manager *man;
int err;
ttm_dev = kunit_kzalloc(test, sizeof(*ttm_dev), GFP_KERNEL);
KUNIT_ASSERT_NOT_NULL(test, ttm_dev);
err = ttm_device_kunit_init(priv, ttm_dev, false, false);
KUNIT_ASSERT_EQ(test, err, 0);
man = ttm_manager_type(ttm_dev, TTM_PL_SYSTEM);
KUNIT_ASSERT_NOT_NULL(test, man);
ttm_device_fini(ttm_dev);
KUNIT_ASSERT_FALSE(test, man->use_type);
KUNIT_ASSERT_TRUE(test, list_empty(&man->lru[0]));
KUNIT_ASSERT_NULL(test, ttm_dev->man_drv[TTM_PL_SYSTEM]);
}
static void ttm_device_init_no_vma_man(struct kunit *test)
{
struct ttm_test_devices *priv = test->priv;
struct drm_device *drm = priv->drm;
struct ttm_device *ttm_dev;
struct drm_vma_offset_manager *vma_man;
int err;
ttm_dev = kunit_kzalloc(test, sizeof(*ttm_dev), GFP_KERNEL);
KUNIT_ASSERT_NOT_NULL(test, ttm_dev);
/* Let's pretend there's no VMA manager allocated */
vma_man = drm->vma_offset_manager;
drm->vma_offset_manager = NULL;
err = ttm_device_kunit_init(priv, ttm_dev, false, false);
KUNIT_EXPECT_EQ(test, err, -EINVAL);
/* Bring the manager back for a graceful cleanup */
drm->vma_offset_manager = vma_man;
}
static const struct ttm_device_test_case ttm_device_cases[] = {
{
.description = "No DMA allocations, no DMA32 required",
.use_dma_alloc = false,
.use_dma32 = false,
.pools_init_expected = false,
},
{
.description = "DMA allocations, DMA32 required",
.use_dma_alloc = true,
.use_dma32 = true,
.pools_init_expected = true,
},
{
.description = "No DMA allocations, DMA32 required",
.use_dma_alloc = false,
.use_dma32 = true,
.pools_init_expected = false,
},
{
.description = "DMA allocations, no DMA32 required",
.use_dma_alloc = true,
.use_dma32 = false,
.pools_init_expected = true,
},
};
static void ttm_device_case_desc(const struct ttm_device_test_case *t, char *desc)
{
strscpy(desc, t->description, KUNIT_PARAM_DESC_SIZE);
}
KUNIT_ARRAY_PARAM(ttm_device, ttm_device_cases, ttm_device_case_desc);
static void ttm_device_init_pools(struct kunit *test)
{
struct ttm_test_devices *priv = test->priv;
const struct ttm_device_test_case *params = test->param_value;
struct ttm_device *ttm_dev;
struct ttm_pool *pool;
struct ttm_pool_type pt;
int err;
ttm_dev = kunit_kzalloc(test, sizeof(*ttm_dev), GFP_KERNEL);
KUNIT_ASSERT_NOT_NULL(test, ttm_dev);
err = ttm_device_kunit_init(priv, ttm_dev,
params->use_dma_alloc,
params->use_dma32);
KUNIT_ASSERT_EQ(test, err, 0);
pool = &ttm_dev->pool;
KUNIT_ASSERT_NOT_NULL(test, pool);
KUNIT_EXPECT_PTR_EQ(test, pool->dev, priv->dev);
KUNIT_EXPECT_EQ(test, pool->use_dma_alloc, params->use_dma_alloc);
KUNIT_EXPECT_EQ(test, pool->use_dma32, params->use_dma32);
if (params->pools_init_expected) {
for (int i = 0; i < TTM_NUM_CACHING_TYPES; ++i) {
for (int j = 0; j < NR_PAGE_ORDERS; ++j) {
pt = pool->caching[i].orders[j];
KUNIT_EXPECT_PTR_EQ(test, pt.pool, pool);
KUNIT_EXPECT_EQ(test, pt.caching, i);
KUNIT_EXPECT_EQ(test, pt.order, j);
if (params->use_dma_alloc)
KUNIT_ASSERT_FALSE(test,
list_empty(&pt.pages));
}
}
}
ttm_device_fini(ttm_dev);
}
static struct kunit_case ttm_device_test_cases[] = {
KUNIT_CASE(ttm_device_init_basic),
KUNIT_CASE(ttm_device_init_multiple),
KUNIT_CASE(ttm_device_fini_basic),
KUNIT_CASE(ttm_device_init_no_vma_man),
KUNIT_CASE_PARAM(ttm_device_init_pools, ttm_device_gen_params),
{}
};
static struct kunit_suite ttm_device_test_suite = {
.name = "ttm_device",
.init = ttm_test_devices_init,
.exit = ttm_test_devices_fini,
.test_cases = ttm_device_test_cases,
};
kunit_test_suites(&ttm_device_test_suite);
MODULE_DESCRIPTION("KUnit tests for ttm_device APIs");
MODULE_LICENSE("GPL and additional rights");
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