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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_placement.h>
#include <drm/ttm/ttm_tt.h>
#include "ttm_kunit_helpers.h"
#define BO_SIZE SZ_4K
struct ttm_bo_validate_test_case {
const char *description;
enum ttm_bo_type bo_type;
bool with_ttm;
};
static struct ttm_placement *ttm_placement_kunit_init(struct kunit *test,
struct ttm_place *places,
unsigned int num_places)
{
struct ttm_placement *placement;
placement = kunit_kzalloc(test, sizeof(*placement), GFP_KERNEL);
KUNIT_ASSERT_NOT_NULL(test, placement);
placement->num_placement = num_places;
placement->placement = places;
return placement;
}
static void ttm_bo_validate_case_desc(const struct ttm_bo_validate_test_case *t,
char *desc)
{
strscpy(desc, t->description, KUNIT_PARAM_DESC_SIZE);
}
static const struct ttm_bo_validate_test_case ttm_bo_type_cases[] = {
{
.description = "Buffer object for userspace",
.bo_type = ttm_bo_type_device,
},
{
.description = "Kernel buffer object",
.bo_type = ttm_bo_type_kernel,
},
{
.description = "Shared buffer object",
.bo_type = ttm_bo_type_sg,
},
};
KUNIT_ARRAY_PARAM(ttm_bo_types, ttm_bo_type_cases,
ttm_bo_validate_case_desc);
static void ttm_bo_init_reserved_sys_man(struct kunit *test)
{
const struct ttm_bo_validate_test_case *params = test->param_value;
struct ttm_test_devices *priv = test->priv;
enum ttm_bo_type bo_type = params->bo_type;
u32 size = ALIGN(BO_SIZE, PAGE_SIZE);
struct ttm_operation_ctx ctx = { };
struct ttm_placement *placement;
struct ttm_buffer_object *bo;
struct ttm_place *place;
int err;
bo = kunit_kzalloc(test, sizeof(*bo), GFP_KERNEL);
KUNIT_ASSERT_NOT_NULL(test, bo);
place = ttm_place_kunit_init(test, TTM_PL_SYSTEM, 0);
placement = ttm_placement_kunit_init(test, place, 1);
drm_gem_private_object_init(priv->drm, &bo->base, size);
err = ttm_bo_init_reserved(priv->ttm_dev, bo, bo_type, placement,
PAGE_SIZE, &ctx, NULL, NULL,
&dummy_ttm_bo_destroy);
dma_resv_unlock(bo->base.resv);
KUNIT_EXPECT_EQ(test, err, 0);
KUNIT_EXPECT_EQ(test, kref_read(&bo->kref), 1);
KUNIT_EXPECT_PTR_EQ(test, bo->bdev, priv->ttm_dev);
KUNIT_EXPECT_EQ(test, bo->type, bo_type);
KUNIT_EXPECT_EQ(test, bo->page_alignment, PAGE_SIZE);
KUNIT_EXPECT_PTR_EQ(test, bo->destroy, &dummy_ttm_bo_destroy);
KUNIT_EXPECT_EQ(test, bo->pin_count, 0);
KUNIT_EXPECT_NULL(test, bo->bulk_move);
KUNIT_EXPECT_NOT_NULL(test, bo->ttm);
KUNIT_EXPECT_FALSE(test, ttm_tt_is_populated(bo->ttm));
KUNIT_EXPECT_NOT_NULL(test, (void *)bo->base.resv->fences);
KUNIT_EXPECT_EQ(test, ctx.bytes_moved, size);
if (bo_type != ttm_bo_type_kernel)
KUNIT_EXPECT_TRUE(test,
drm_mm_node_allocated(&bo->base.vma_node.vm_node));
ttm_resource_free(bo, &bo->resource);
ttm_bo_put(bo);
}
static void ttm_bo_init_reserved_resv(struct kunit *test)
{
enum ttm_bo_type bo_type = ttm_bo_type_device;
struct ttm_test_devices *priv = test->priv;
u32 size = ALIGN(BO_SIZE, PAGE_SIZE);
struct ttm_operation_ctx ctx = { };
struct ttm_placement *placement;
struct ttm_buffer_object *bo;
struct ttm_place *place;
struct dma_resv resv;
int err;
bo = kunit_kzalloc(test, sizeof(*bo), GFP_KERNEL);
KUNIT_ASSERT_NOT_NULL(test, bo);
place = ttm_place_kunit_init(test, TTM_PL_SYSTEM, 0);
placement = ttm_placement_kunit_init(test, place, 1);
drm_gem_private_object_init(priv->drm, &bo->base, size);
dma_resv_init(&resv);
dma_resv_lock(&resv, NULL);
err = ttm_bo_init_reserved(priv->ttm_dev, bo, bo_type, placement,
PAGE_SIZE, &ctx, NULL, &resv,
&dummy_ttm_bo_destroy);
dma_resv_unlock(bo->base.resv);
KUNIT_EXPECT_EQ(test, err, 0);
KUNIT_EXPECT_PTR_EQ(test, bo->base.resv, &resv);
ttm_resource_free(bo, &bo->resource);
ttm_bo_put(bo);
}
static void ttm_bo_validate_invalid_placement(struct kunit *test)
{
enum ttm_bo_type bo_type = ttm_bo_type_device;
u32 unknown_mem_type = TTM_PL_PRIV + 1;
u32 size = ALIGN(BO_SIZE, PAGE_SIZE);
struct ttm_operation_ctx ctx = { };
struct ttm_placement *placement;
struct ttm_buffer_object *bo;
struct ttm_place *place;
int err;
place = ttm_place_kunit_init(test, unknown_mem_type, 0);
placement = ttm_placement_kunit_init(test, place, 1);
bo = ttm_bo_kunit_init(test, test->priv, size, NULL);
bo->type = bo_type;
ttm_bo_reserve(bo, false, false, NULL);
err = ttm_bo_validate(bo, placement, &ctx);
dma_resv_unlock(bo->base.resv);
KUNIT_EXPECT_EQ(test, err, -ENOMEM);
ttm_bo_put(bo);
}
static void ttm_bo_validate_pinned(struct kunit *test)
{
enum ttm_bo_type bo_type = ttm_bo_type_device;
u32 size = ALIGN(BO_SIZE, PAGE_SIZE);
struct ttm_operation_ctx ctx = { };
u32 mem_type = TTM_PL_SYSTEM;
struct ttm_placement *placement;
struct ttm_buffer_object *bo;
struct ttm_place *place;
int err;
place = ttm_place_kunit_init(test, mem_type, 0);
placement = ttm_placement_kunit_init(test, place, 1);
bo = ttm_bo_kunit_init(test, test->priv, size, NULL);
bo->type = bo_type;
ttm_bo_reserve(bo, false, false, NULL);
ttm_bo_pin(bo);
err = ttm_bo_validate(bo, placement, &ctx);
dma_resv_unlock(bo->base.resv);
KUNIT_EXPECT_EQ(test, err, -EINVAL);
ttm_bo_reserve(bo, false, false, NULL);
ttm_bo_unpin(bo);
dma_resv_unlock(bo->base.resv);
ttm_bo_put(bo);
}
static struct kunit_case ttm_bo_validate_test_cases[] = {
KUNIT_CASE_PARAM(ttm_bo_init_reserved_sys_man, ttm_bo_types_gen_params),
KUNIT_CASE(ttm_bo_init_reserved_resv),
KUNIT_CASE(ttm_bo_validate_invalid_placement),
KUNIT_CASE(ttm_bo_validate_pinned),
{}
};
static struct kunit_suite ttm_bo_validate_test_suite = {
.name = "ttm_bo_validate",
.init = ttm_test_devices_all_init,
.exit = ttm_test_devices_fini,
.test_cases = ttm_bo_validate_test_cases,
};
kunit_test_suites(&ttm_bo_validate_test_suite);
MODULE_LICENSE("GPL and additional rights");
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