[PATCH v2 7/8] drm/amd/display: Introduce KUnit tests to dc_dmub_srv library
From: Maíra Canal
Date: Wed Aug 31 2022 - 13:26:56 EST
Add unit test to the SubVP feature in order to avoid possible
regressions and assure the code robustness.
Signed-off-by: Maíra Canal <mairacanal@xxxxxxxxxx>
---
drivers/gpu/drm/amd/display/Kconfig | 13 +
drivers/gpu/drm/amd/display/dc/dc_dmub_srv.c | 4 +
.../gpu/drm/amd/display/tests/.kunitconfig | 1 +
.../amd/display/tests/dc/dc_dmub_srv_test.c | 285 ++++++++++++++++++
4 files changed, 303 insertions(+)
create mode 100644 drivers/gpu/drm/amd/display/tests/dc/dc_dmub_srv_test.c
diff --git a/drivers/gpu/drm/amd/display/Kconfig b/drivers/gpu/drm/amd/display/Kconfig
index 039227baedfa..f667b954f89f 100644
--- a/drivers/gpu/drm/amd/display/Kconfig
+++ b/drivers/gpu/drm/amd/display/Kconfig
@@ -93,4 +93,17 @@ config AMD_DC_BASICS_KUNIT_TEST
If unsure, say N.
+config AMD_DC_KUNIT_TEST
+ bool "Enable KUnit tests for the 'utils' sub-component of DAL" if !KUNIT_ALL_TESTS
+ depends on DRM_AMD_DC && KUNIT
+ default KUNIT_ALL_TESTS
+ help
+ Enables unit tests for the basics folder of Display Core. Only useful for
+ kernel devs running KUnit.
+
+ For more information on KUnit and unit tests in general please refer to
+ the KUnit documentation in Documentation/dev-tools/kunit/.
+
+ If unsure, say N.
+
endmenu
diff --git a/drivers/gpu/drm/amd/display/dc/dc_dmub_srv.c b/drivers/gpu/drm/amd/display/dc/dc_dmub_srv.c
index cd7225d98b3d..86f78fe017a6 100644
--- a/drivers/gpu/drm/amd/display/dc/dc_dmub_srv.c
+++ b/drivers/gpu/drm/amd/display/dc/dc_dmub_srv.c
@@ -819,3 +819,7 @@ void dc_dmub_srv_log_diagnostic_data(struct dc_dmub_srv *dc_dmub_srv)
diag_data.is_cw0_enabled,
diag_data.is_cw6_enabled);
}
+
+#if IS_ENABLED(CONFIG_AMD_DC_KUNIT_TEST)
+#include "../tests/dc/dc_dmub_srv_test.c"
+#endif
diff --git a/drivers/gpu/drm/amd/display/tests/.kunitconfig b/drivers/gpu/drm/amd/display/tests/.kunitconfig
index eb6f81601757..4c5861ad58bd 100644
--- a/drivers/gpu/drm/amd/display/tests/.kunitconfig
+++ b/drivers/gpu/drm/amd/display/tests/.kunitconfig
@@ -4,5 +4,6 @@ CONFIG_DRM=y
CONFIG_DRM_AMDGPU=y
CONFIG_DRM_AMD_DC=y
CONFIG_AMD_DC_BASICS_KUNIT_TEST=y
+CONFIG_AMD_DC_KUNIT_TEST=y
CONFIG_DCE_KUNIT_TEST=y
CONFIG_DML_KUNIT_TEST=y
diff --git a/drivers/gpu/drm/amd/display/tests/dc/dc_dmub_srv_test.c b/drivers/gpu/drm/amd/display/tests/dc/dc_dmub_srv_test.c
new file mode 100644
index 000000000000..3f1f15397090
--- /dev/null
+++ b/drivers/gpu/drm/amd/display/tests/dc/dc_dmub_srv_test.c
@@ -0,0 +1,285 @@
+// SPDX-License-Identifier: MIT
+/*
+ * KUnit tests for dc_dmub_srv.c
+ *
+ * Copyright (C) 2022, Maíra Canal <mairacanal@xxxxxxxxxx>
+ */
+
+#include <kunit/test.h>
+#include "dc_dmub_srv.h"
+
+struct populate_subvp_cmd_drr_info_test_case {
+ const char *desc;
+ struct dc *dc;
+ struct pipe_ctx *subvp_pipe;
+ struct pipe_ctx *vblank_pipe;
+ const u8 drr_in_use;
+ const u8 drr_window_size_ms;
+ const u16 min_vtotal_supported;
+ const u16 max_vtotal_supported;
+ const u8 use_ramping;
+};
+
+struct populate_subvp_cmd_drr_info_test_case populate_subvp_cmd_drr_info_cases[] = {
+ {
+ .desc = "Same Clock Frequency",
+ .dc = &(struct dc) {
+ .caps = {
+ .subvp_prefetch_end_to_mall_start_us = 0,
+ }
+ },
+ .subvp_pipe = &(struct pipe_ctx) {
+ .stream = &(struct dc_stream_state) {
+ .timing = {
+ .h_total = 2784,
+ .v_addressable = 1080,
+ .pix_clk_100hz = 1855800,
+ },
+ .mall_stream_config = {
+ .paired_stream = &(struct dc_stream_state) {
+ .timing = {
+ .h_total = 3600,
+ .v_total = 1111,
+ .v_addressable = 1080,
+ .v_front_porch = 3,
+ .pix_clk_100hz = 1855800,
+ },
+ },
+ },
+ },
+ },
+ .vblank_pipe = &(struct pipe_ctx) {
+ .stream = &(struct dc_stream_state) {
+ .timing = {
+ .h_total = 2784,
+ .v_total = 1111,
+ .v_addressable = 1080,
+ .pix_clk_100hz = 1855800,
+ },
+ },
+ },
+ .drr_in_use = true,
+ .use_ramping = false,
+ .drr_window_size_ms = 4,
+ .min_vtotal_supported = 63709,
+ .max_vtotal_supported = 363,
+ },
+ {
+ .desc = "Same Clock Frequency with Prefetch End to Mall Start",
+ .dc = &(struct dc) {
+ .caps = {
+ .subvp_prefetch_end_to_mall_start_us = 500,
+ }
+ },
+ .subvp_pipe = &(struct pipe_ctx) {
+ .stream = &(struct dc_stream_state) {
+ .timing = {
+ .h_total = 2784,
+ .v_addressable = 1080,
+ .pix_clk_100hz = 1855800,
+ },
+ .mall_stream_config = {
+ .paired_stream = &(struct dc_stream_state) {
+ .timing = {
+ .h_total = 3600,
+ .v_total = 1111,
+ .v_addressable = 1080,
+ .v_front_porch = 3,
+ .pix_clk_100hz = 1855800,
+ },
+ },
+ },
+ },
+ },
+ .vblank_pipe = &(struct pipe_ctx) {
+ .stream = &(struct dc_stream_state) {
+ .timing = {
+ .h_total = 2784,
+ .v_total = 1111,
+ .v_addressable = 1080,
+ .pix_clk_100hz = 1855800,
+ },
+ },
+ },
+ .drr_in_use = true,
+ .use_ramping = false,
+ .drr_window_size_ms = 4,
+ .min_vtotal_supported = 63709,
+ .max_vtotal_supported = 346,
+ },
+ {
+ .desc = "Same Clock Frequency Not Multiple of 2",
+ .dc = &(struct dc) {
+ .caps = {
+ .subvp_prefetch_end_to_mall_start_us = 0,
+ }
+ },
+ .subvp_pipe = &(struct pipe_ctx) {
+ .stream = &(struct dc_stream_state) {
+ .timing = {
+ .h_total = 2784,
+ .v_addressable = 1080,
+ .pix_clk_100hz = 1866743,
+ },
+ .mall_stream_config = {
+ .paired_stream = &(struct dc_stream_state) {
+ .timing = {
+ .h_total = 3600,
+ .v_total = 2400,
+ .v_addressable = 2360,
+ .v_front_porch = 4,
+ .pix_clk_100hz = 1866743,
+ },
+ },
+ },
+ },
+ },
+ .vblank_pipe = &(struct pipe_ctx) {
+ .stream = &(struct dc_stream_state) {
+ .timing = {
+ .h_total = 3600,
+ .v_total = 2400,
+ .v_addressable = 2360,
+ .pix_clk_100hz = 1866743,
+ },
+ },
+ },
+ .drr_in_use = true,
+ .use_ramping = false,
+ .drr_window_size_ms = 4,
+ .min_vtotal_supported = 1387,
+ .max_vtotal_supported = 399,
+ },
+ {
+ .desc = "Different Clock Frequency for smaller h_total and v_total",
+ .dc = &(struct dc) {
+ .caps = {
+ .subvp_prefetch_end_to_mall_start_us = 300,
+ }
+ },
+ .subvp_pipe = &(struct pipe_ctx) {
+ .stream = &(struct dc_stream_state) {
+ .timing = {
+ .h_total = 1280,
+ .v_addressable = 600,
+ .pix_clk_100hz = 1855800,
+ },
+ .mall_stream_config = {
+ .paired_stream = &(struct dc_stream_state) {
+ .timing = {
+ .h_total = 1280,
+ .v_total = 720,
+ .v_addressable = 600,
+ .v_front_porch = 4,
+ .pix_clk_100hz = 1866743,
+ },
+ },
+ },
+ },
+ },
+ .vblank_pipe = &(struct pipe_ctx) {
+ .stream = &(struct dc_stream_state) {
+ .timing = {
+ .h_total = 1280,
+ .v_total = 720,
+ .v_addressable = 600,
+ .pix_clk_100hz = 2100800,
+ },
+ },
+ },
+ .drr_in_use = true,
+ .use_ramping = false,
+ .drr_window_size_ms = 4,
+ .min_vtotal_supported = 1477,
+ .max_vtotal_supported = 212,
+ },
+ {
+ .desc = "Different Clock Frequency for approximately 1920x1080",
+ .dc = &(struct dc) {
+ .caps = {
+ .subvp_prefetch_end_to_mall_start_us = 0,
+ }
+ },
+ .subvp_pipe = &(struct pipe_ctx) {
+ .stream = &(struct dc_stream_state) {
+ .timing = {
+ .h_total = 1920,
+ .v_addressable = 1000,
+ .pix_clk_100hz = 1855800,
+ },
+ .mall_stream_config = {
+ .paired_stream = &(struct dc_stream_state) {
+ .timing = {
+ .h_total = 1911,
+ .v_total = 1080,
+ .v_addressable = 1000,
+ .v_front_porch = 7,
+ .pix_clk_100hz = 1866743,
+ },
+ },
+ },
+ },
+ },
+ .vblank_pipe = &(struct pipe_ctx) {
+ .stream = &(struct dc_stream_state) {
+ .timing = {
+ .h_total = 1280,
+ .v_total = 720,
+ .v_addressable = 600,
+ .pix_clk_100hz = 2100800,
+ },
+ },
+ },
+ .drr_in_use = true,
+ .use_ramping = false,
+ .drr_window_size_ms = 4,
+ .min_vtotal_supported = 2482,
+ .max_vtotal_supported = 247,
+ },
+};
+
+static void populate_subvp_cmd_drr_info_test_to_desc(struct
+ populate_subvp_cmd_drr_info_test_case * t, char *desc)
+{
+ strcpy(desc, t->desc);
+}
+
+KUNIT_ARRAY_PARAM(populate_subvp_cmd_drr_info, populate_subvp_cmd_drr_info_cases,
+ populate_subvp_cmd_drr_info_test_to_desc);
+
+static void populate_subvp_cmd_drr_info_test(struct kunit *test)
+{
+ const struct populate_subvp_cmd_drr_info_test_case *test_param =
+ test->param_value;
+ struct dmub_cmd_fw_assisted_mclk_switch_pipe_data_v2 *pipe_data;
+
+ pipe_data = kunit_kzalloc(test,
+ sizeof(struct dmub_cmd_fw_assisted_mclk_switch_pipe_data_v2),
+ GFP_KERNEL);
+
+ populate_subvp_cmd_drr_info(test_param->dc, test_param->subvp_pipe,
+ test_param->vblank_pipe, pipe_data);
+
+ KUNIT_EXPECT_EQ(test, test_param->drr_in_use,
+ pipe_data->pipe_config.vblank_data.drr_info.drr_in_use);
+ KUNIT_EXPECT_EQ(test, test_param->drr_window_size_ms,
+ pipe_data->pipe_config.vblank_data.drr_info.drr_window_size_ms);
+ KUNIT_EXPECT_EQ(test, test_param->use_ramping,
+ pipe_data->pipe_config.vblank_data.drr_info.use_ramping);
+ KUNIT_EXPECT_EQ(test, test_param->min_vtotal_supported,
+ pipe_data->pipe_config.vblank_data.drr_info.min_vtotal_supported);
+ KUNIT_EXPECT_EQ(test, test_param->max_vtotal_supported,
+ pipe_data->pipe_config.vblank_data.drr_info.max_vtotal_supported);
+}
+
+static struct kunit_case dc_dmub_srv_cases[] = {
+ KUNIT_CASE_PARAM(populate_subvp_cmd_drr_info_test, populate_subvp_cmd_drr_info_gen_params),
+ { }
+};
+
+static struct kunit_suite dc_dmub_srv_suite = {
+ .name = "dc_dmub_srv",
+ .test_cases = dc_dmub_srv_cases,
+};
+
+kunit_test_suite(dc_dmub_srv_suite);
--
2.37.2