Add tests for ttm_bo_init_reserved() and ttm_bo_validate() that use
sys manager. Define a simple move function in ttm_device_funcs. Expose
destroy callback of the buffer object to make testing of
ttm_bo_init_reserved() behaviour easier.
Signed-off-by: Karolina Stolarek <karolina.stola...@intel.com>
Reviewed-by: Matthew Auld <matthew.a...@intel.com>
Reviewed-by: Somalapuram, Amaranath <asoma...@amd.com>
Tested-by: Somalapuram, Amaranath <asoma...@amd.com>
---
drivers/gpu/drm/ttm/tests/Makefile | 1 +
.../gpu/drm/ttm/tests/ttm_bo_validate_test.c | 213 ++++++++++++++++++
drivers/gpu/drm/ttm/tests/ttm_kunit_helpers.c | 14 +-
drivers/gpu/drm/ttm/tests/ttm_kunit_helpers.h | 1 +
4 files changed, 228 insertions(+), 1 deletion(-)
create mode 100644 drivers/gpu/drm/ttm/tests/ttm_bo_validate_test.c
diff --git a/drivers/gpu/drm/ttm/tests/Makefile
b/drivers/gpu/drm/ttm/tests/Makefile
index 468535f7eed2..2e5ed63fb414 100644
--- a/drivers/gpu/drm/ttm/tests/Makefile
+++ b/drivers/gpu/drm/ttm/tests/Makefile
@@ -6,4 +6,5 @@ obj-$(CONFIG_DRM_TTM_KUNIT_TEST) += \
ttm_resource_test.o \
ttm_tt_test.o \
ttm_bo_test.o \
+ ttm_bo_validate_test.o \
ttm_kunit_helpers.o
diff --git a/drivers/gpu/drm/ttm/tests/ttm_bo_validate_test.c
b/drivers/gpu/drm/ttm/tests/ttm_bo_validate_test.c
new file mode 100644
index 000000000000..a5520b0631a3
--- /dev/null
+++ b/drivers/gpu/drm/ttm/tests/ttm_bo_validate_test.c
@@ -0,0 +1,213 @@
+// 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;
+ uint32_t 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;
+ uint32_t 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;
+ uint32_t unknown_mem_type = TTM_PL_PRIV + 1;
+ uint32_t 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;
+ uint32_t size = ALIGN(BO_SIZE, PAGE_SIZE);
+ struct ttm_operation_ctx ctx = { };
+ uint32_t 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");
diff --git a/drivers/gpu/drm/ttm/tests/ttm_kunit_helpers.c
b/drivers/gpu/drm/ttm/tests/ttm_kunit_helpers.c
index f25bd7951b74..2f590bae53f8 100644
--- a/drivers/gpu/drm/ttm/tests/ttm_kunit_helpers.c
+++ b/drivers/gpu/drm/ttm/tests/ttm_kunit_helpers.c
@@ -22,13 +22,19 @@ static void ttm_tt_simple_destroy(struct ttm_device *bdev,
struct ttm_tt *ttm)
kfree(ttm);
}
-static void dummy_ttm_bo_destroy(struct ttm_buffer_object *bo)
+static int mock_move(struct ttm_buffer_object *bo, bool evict,
+ struct ttm_operation_ctx *ctx,
+ struct ttm_resource *new_mem,
+ struct ttm_place *hop)
{
+ bo->resource = new_mem;
+ return 0;
}
struct ttm_device_funcs ttm_dev_funcs = {
.ttm_tt_create = ttm_tt_simple_create,
.ttm_tt_destroy = ttm_tt_simple_destroy,
+ .move = mock_move,
};
EXPORT_SYMBOL_GPL(ttm_dev_funcs);
@@ -93,6 +99,12 @@ struct ttm_place *ttm_place_kunit_init(struct kunit *test,
}
EXPORT_SYMBOL_GPL(ttm_place_kunit_init);
+void dummy_ttm_bo_destroy(struct ttm_buffer_object *bo)
+{
+ drm_gem_object_release(&bo->base);
+}
+EXPORT_SYMBOL_GPL(dummy_ttm_bo_destroy);
+
struct ttm_test_devices *ttm_test_devices_basic(struct kunit *test)
{
struct ttm_test_devices *devs;
diff --git a/drivers/gpu/drm/ttm/tests/ttm_kunit_helpers.h
b/drivers/gpu/drm/ttm/tests/ttm_kunit_helpers.h
index 3dbf404e22a8..5ce1727b36fc 100644
--- a/drivers/gpu/drm/ttm/tests/ttm_kunit_helpers.h
+++ b/drivers/gpu/drm/ttm/tests/ttm_kunit_helpers.h
@@ -32,6 +32,7 @@ struct ttm_buffer_object *ttm_bo_kunit_init(struct kunit
*test,
struct dma_resv *obj);
struct ttm_place *ttm_place_kunit_init(struct kunit *test,
uint32_t mem_type, uint32_t flags);
+void dummy_ttm_bo_destroy(struct ttm_buffer_object *bo);
struct ttm_test_devices *ttm_test_devices_basic(struct kunit *test);
struct ttm_test_devices *ttm_test_devices_all(struct kunit *test);
--
2.34.1
