[igt-dev] [PATCH i-g-t] tests/kms_cdclk : Add test to validate cdclk crawling
venkata.sai.patnana at intel.com
venkata.sai.patnana at intel.com
Fri Jun 18 10:49:27 UTC 2021
From: Swati Sharma <swati2.sharma at intel.com>
Added test to validate cdclk crawling
* created new IGT
* added 3 test scenarios (basic, scalar and mode-transition)
* used existing i915_freq_info debugfs API to validate change in cdclk
Cc: Mika Kahola <mika.kahola at intel.com>
Cc: Matt Roper <matthew.d.roper at intel.com>
Cc: Ville Syrjälä <ville.syrjala at linux.intel.com>
Cc: Stanislav Lisovskiy <stanislav.lisovskiy at intel.com>
Signed-off-by: Swati Sharma <swati2.sharma at intel.com>
Signed-off-by: Juha-Pekka Heikkilä <juha-pekka.heikkila at intel.com>
Signed-off-by: Mika Kahola <mika.kahola at intel.com>
---
tests/kms_cdclk.c | 307 ++++++++++++++++++++++++++++++++++++++++++++++
tests/meson.build | 1 +
2 files changed, 308 insertions(+)
create mode 100644 tests/kms_cdclk.c
diff --git a/tests/kms_cdclk.c b/tests/kms_cdclk.c
new file mode 100644
index 00000000..d002be83
--- /dev/null
+++ b/tests/kms_cdclk.c
@@ -0,0 +1,307 @@
+/*
+ * Copyright © 2020 Intel Corporation
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a
+ * copy of this software and associated documentation files (the "Software"),
+ * to deal in the Software without restriction, including without limitation
+ * the rights to use, copy, modify, merge, publish, distribute, sublicense,
+ * and/or sell copies of the Software, and to permit persons to whom the
+ * Software is furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice (including the next
+ * paragraph) shall be included in all copies or substantial portions of the
+ * Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
+ * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
+ * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
+ * IN THE SOFTWARE.
+ *
+ * Author:
+ * Swati Sharma <swati2.sharma at intel.com>
+ */
+
+#include "igt.h"
+
+IGT_TEST_DESCRIPTION("Test cdclk features : crawling");
+
+/* Test flags */
+enum {
+ TEST_BASIC = 1 << 0,
+ TEST_PLANESCALING = 1 << 1,
+ TEST_MODETRANSITION = 1 << 2,
+};
+
+typedef struct {
+ int drm_fd;
+ int debugfs_fd;
+ uint32_t devid;
+ igt_display_t display;
+} data_t;
+
+static bool hardware_supported(data_t *data)
+{
+ if (intel_display_ver(data->devid) >= 13)
+ return true;
+
+ return false;
+}
+
+static int get_current_cdclk_freq(int debugfs_fd)
+{
+ int cdclk_freq_current;
+ char buf[1024];
+ char *start_loc;
+ int res;
+
+ res = igt_debugfs_simple_read(debugfs_fd, "i915_frequency_info",
+ buf, sizeof(buf));
+ igt_require(res > 0);
+
+ igt_assert(start_loc = strstr(buf, "Current CD clock frequency: "));
+ igt_assert_eq(sscanf(start_loc, "Current CD clock frequency: %d", &cdclk_freq_current), 1);
+ igt_info("Current CD clock frequency: %d\n", cdclk_freq_current);
+
+ return cdclk_freq_current;
+}
+
+static __u64 get_mode_data_rate(drmModeModeInfo *mode)
+{
+ __u64 data_rate = (__u64)mode->hdisplay * (__u64)mode->vdisplay * (__u64)mode->vrefresh;
+ return data_rate;
+}
+
+static drmModeModeInfo *get_highres_mode(igt_output_t *output)
+{
+ drmModeModeInfo *highest_mode = NULL;
+ drmModeConnector *connector = output->config.connector;
+ int j;
+
+ for (j = 0; j < connector->count_modes; j++) {
+ if (!highest_mode) {
+ highest_mode = &connector->modes[j];
+ } else if (connector->modes[j].vdisplay && connector->modes[j].hdisplay) {
+ __u64 highest_data_rate = get_mode_data_rate(highest_mode);
+ __u64 data_rate = get_mode_data_rate(&connector->modes[j]);
+
+ if (highest_data_rate < data_rate)
+ highest_mode = &connector->modes[j];
+ }
+ }
+
+ return highest_mode;
+}
+
+static drmModeModeInfo *get_lowres_mode(igt_output_t *output)
+{
+ drmModeModeInfo *lowest_mode = NULL;
+ drmModeConnector *connector = output->config.connector;
+ int j;
+
+ for (j = 0; j < connector->count_modes; j++) {
+ if (!lowest_mode) {
+ lowest_mode = &connector->modes[j];
+ } else if (connector->modes[j].vdisplay && connector->modes[j].hdisplay) {
+ __u64 lowest_data_rate = get_mode_data_rate(lowest_mode);
+ __u64 data_rate = get_mode_data_rate(&output->config.connector->modes[j]);
+
+ if (lowest_data_rate > data_rate)
+ lowest_mode = &connector->modes[j];
+ }
+ }
+
+ return lowest_mode;
+}
+
+static void do_cleanup_display(igt_display_t *dpy)
+{
+ enum pipe pipe;
+ igt_output_t *output;
+ igt_plane_t *plane;
+
+ for_each_pipe(dpy, pipe)
+ for_each_plane_on_pipe(dpy, pipe, plane)
+ igt_plane_set_fb(plane, NULL);
+
+ for_each_connected_output(dpy, output)
+ igt_output_set_pipe(output, PIPE_NONE);
+
+ igt_display_commit2(dpy, dpy->is_atomic ? COMMIT_ATOMIC : COMMIT_LEGACY);
+}
+
+static void test_basic(data_t *data, enum pipe pipe, igt_output_t *output)
+{
+ igt_display_t *display = &data->display;
+ int debugfs_fd = data->debugfs_fd;
+ int cdclk_ref, cdclk_new;
+ struct igt_fb fb;
+ igt_plane_t *primary;
+ drmModeModeInfo *mode;
+
+ do_cleanup_display(display);
+ igt_display_reset(display);
+
+ igt_output_set_pipe(output, pipe);
+ mode = igt_output_get_mode(output);
+ primary = igt_output_get_plane_type(output, DRM_PLANE_TYPE_PRIMARY);
+
+ igt_create_color_pattern_fb(display->drm_fd,
+ mode->hdisplay, mode->vdisplay,
+ DRM_FORMAT_XRGB8888,
+ I915_TILING_NONE,
+ 0.0, 0.0, 0.0, &fb);
+
+ igt_plane_set_fb(primary, &fb);
+ cdclk_ref = get_current_cdclk_freq(debugfs_fd);
+ igt_display_commit_atomic(display, DRM_MODE_ATOMIC_ALLOW_MODESET, NULL);
+ cdclk_new = get_current_cdclk_freq(debugfs_fd);
+
+ /* cdclk should bump */
+ igt_assert_lt(cdclk_ref, cdclk_new);
+
+ /* cleanup */
+ do_cleanup_display(display);
+ igt_remove_fb(display->drm_fd, &fb);
+}
+
+static void test_plane_scaling(data_t *data, enum pipe pipe, igt_output_t *output)
+{
+ igt_display_t *display = &data->display;
+ int debugfs_fd = data->debugfs_fd;
+ int cdclk_ref, cdclk_new;
+ struct igt_fb fb;
+ igt_plane_t *primary;
+ drmModeModeInfo *mode;
+ int scaling = 60;
+
+ do_cleanup_display(display);
+ igt_display_reset(display);
+
+ igt_output_set_pipe(output, pipe);
+ mode = igt_output_get_mode(output);
+
+ primary = igt_output_get_plane_type(output, DRM_PLANE_TYPE_PRIMARY);
+
+ igt_create_color_pattern_fb(display->drm_fd,
+ mode->hdisplay, mode->vdisplay,
+ DRM_FORMAT_XRGB8888,
+ I915_TILING_NONE,
+ 0.0, 0.0, 0.0, &fb);
+ igt_plane_set_fb(primary, &fb);
+
+ /* downscaling */
+ igt_plane_set_size(primary, ((fb.width * scaling) / 100), ((fb.height * scaling) / 100));
+ cdclk_ref = get_current_cdclk_freq(debugfs_fd);
+ igt_display_commit_atomic(display, DRM_MODE_ATOMIC_ALLOW_MODESET, NULL);
+ cdclk_new = get_current_cdclk_freq(debugfs_fd);
+
+ /* cdclk should bump */
+ igt_assert_lt(cdclk_ref, cdclk_new);
+
+ /* cleanup */
+ do_cleanup_display(display);
+ igt_remove_fb(display->drm_fd, &fb);
+}
+
+static void test_mode_transition(data_t *data, enum pipe pipe, igt_output_t *output)
+{
+ igt_display_t *display = &data->display;
+ int debugfs_fd = data->debugfs_fd;
+ int cdclk_ref, cdclk_new;
+ struct igt_fb fb;
+ igt_plane_t *primary;
+ drmModeModeInfo *mode_hi, *mode_lo, *mode;
+
+ do_cleanup_display(display);
+ igt_display_reset(display);
+
+ igt_output_set_pipe(output, pipe);
+ mode = igt_output_get_mode(output);
+ mode_lo = get_lowres_mode(output);
+ mode_hi = get_highres_mode(output);
+
+ if (mode_hi->hdisplay == mode_lo->hdisplay &&
+ mode_hi->vdisplay == mode_lo->vdisplay)
+ igt_skip("Highest and lowest mode resolutions are same; no transition\n");
+
+ primary = igt_output_get_plane_type(output, DRM_PLANE_TYPE_PRIMARY);
+
+ igt_create_color_pattern_fb(display->drm_fd,
+ mode->hdisplay, mode->vdisplay,
+ DRM_FORMAT_XRGB8888,
+ I915_TILING_NONE,
+ 0.0, 0.0, 0.0, &fb);
+
+ /* switch to lower resolution */
+ igt_output_override_mode(output, mode_lo);
+ igt_plane_set_fb(primary, &fb);
+ igt_display_commit_atomic(display, DRM_MODE_ATOMIC_ALLOW_MODESET, NULL);
+ cdclk_ref = get_current_cdclk_freq(debugfs_fd);
+
+ /* switch to higher resolution */
+ igt_output_override_mode(output, mode_hi);
+ igt_plane_set_fb(primary, &fb);
+ igt_display_commit_atomic(display, DRM_MODE_ATOMIC_ALLOW_MODESET, NULL);
+ cdclk_new = get_current_cdclk_freq(debugfs_fd);
+
+ /* cdclk should bump */
+ igt_assert_lt(cdclk_ref, cdclk_new);
+
+ /* cleanup */
+ do_cleanup_display(display);
+ igt_remove_fb(display->drm_fd, &fb);
+}
+
+static void run_cdclk_test(data_t *data, uint32_t flags)
+{
+ igt_display_t *display = &data->display;
+ igt_output_t *output;
+ enum pipe pipe;
+
+ for_each_pipe_with_valid_output(display, pipe, output) {
+ igt_dynamic_f("%s-pipe-%s", output->name, kmstest_pipe_name(pipe))
+ if (igt_pipe_connector_valid(pipe, output)) {
+ if (flags & TEST_BASIC)
+ test_basic(data, pipe, output);
+ if (flags & TEST_PLANESCALING)
+ test_plane_scaling(data, pipe, output);
+ if (flags & TEST_MODETRANSITION)
+ test_mode_transition(data, pipe, output);
+ }
+ }
+}
+
+igt_main
+{
+ data_t data = {};
+
+ igt_fixture {
+ data.drm_fd = drm_open_driver_master(DRIVER_INTEL);
+ igt_require(data.drm_fd >= 0);
+ data.debugfs_fd = igt_debugfs_dir(data.drm_fd);
+ igt_require(data.debugfs_fd);
+ kmstest_set_vt_graphics_mode();
+ data.devid = intel_get_drm_devid(data.drm_fd);
+ igt_require_f(hardware_supported(&data),
+ "Hardware doesn't support crawling.\n");
+ igt_display_require(&data.display, data.drm_fd);
+ igt_display_require_output(&data.display);
+ }
+
+ igt_describe("Basic test to validate cdclk frequency change");
+ igt_subtest_with_dynamic("basic")
+ run_cdclk_test(&data, TEST_BASIC);
+ igt_describe("Plane scaling test to validate cdclk frequency change");
+ igt_subtest_with_dynamic("plane-scaling")
+ run_cdclk_test(&data, TEST_PLANESCALING);
+ igt_describe("Mode transition (low to high) test to validate cdclk frequency");
+ igt_subtest_with_dynamic("mode-transition")
+ run_cdclk_test(&data, TEST_MODETRANSITION);
+
+ igt_fixture {
+ igt_display_fini(&data.display);
+ }
+}
diff --git a/tests/meson.build b/tests/meson.build
index 2351b3d3..01911c45 100644
--- a/tests/meson.build
+++ b/tests/meson.build
@@ -23,6 +23,7 @@ test_progs = [
'kms_big_joiner' ,
'kms_busy',
'kms_ccs',
+ 'kms_cdclk',
'kms_concurrent',
'kms_content_protection',
'kms_cursor_crc',
--
2.32.0
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