tests/kms_plane_lowres: Plane visibility after atomic modesets

Testcase for plane visibility after atomic modesets. The idea of the test
is the following:

 - draw a blue screen with high resolution
 - enable a yellow plane, visible, in lower-left corner
 - set a new lower resolution mode (1024x768) that makes plane invisible
 - check from debugfs 'i915_display_info' that the plane is invisible
 - switch back to higher resolution mode
 - check from debugfs 'i915_display_info' that the plane is visible again
 - repeat number of iterations, default 64

v2: allow test to be run on non-Intel drivers (Daniel)
    moved test for plane visibility to as helper function (Daniel)
    moved get_vblank() function to be part of helper functions (Daniel)
    rename 'tiling' parameter as 'modifier' (Daniel)
    select a mode from a list so that the plane should be invisible.
    use default 1024x768 mode only as a fallback if decent mode has not
    been found (Daniel)
    add tiling MODE_NONE (Daniel)

v3: draw as many overlay planes as the platform supports + cursor plane
    on top of each other on lower-left corner
    skip the test if i915_display_info file is not available
    test plane visibility with igt_assert_plane_visibility() function
    drop option for multiple test iterations (Daniel Vetter)

v4: switch 'for_each_connected_output()' to
    'for_each_valid_output_on_pipe()'
    skip Y and Yf tiling for generations older than 9 (Maarten)

Cc: Daniel Stone <daniel@fooishbar.org>
Cc: Maarten Lankhorst <maarten.lankhorst@linux.intel.com>

Reviewed-by: Maarten Lankhorst <maarten.lankhorst@linux.intel.com>
Signed-off-by: Mika Kahola <mika.kahola@intel.com>

1 files changed, 348 insertions, 0 deletions

diff --git a/tests/kms_plane_lowres.c b/tests/kms_plane_lowres.c
new file mode 100644
index 00000000..93aefdaa
--- /dev/null
+++ b/tests/kms_plane_lowres.c
@@ -0,0 +1,348 @@
+/*
+ * Copyright © 2016 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.
+ *
+ */
+
+#include "igt.h"
+#include "drmtest.h"
+#include <errno.h>
+#include <stdbool.h>
+#include <stdio.h>
+#include <string.h>
+#include <time.h>
+
+IGT_TEST_DESCRIPTION("Test atomic mode setting with a plane by switching between high and low resolutions");
+
+#define MAX_CRCS          1
+#define SIZE            256
+#define LOOP_FOREVER     -1
+
+typedef struct {
+	int drm_fd;
+	igt_display_t display;
+	igt_pipe_crc_t *pipe_crc;
+	igt_plane_t *plane[IGT_MAX_PLANES];
+	struct igt_fb fb[IGT_MAX_PLANES];
+} data_t;
+
+static drmModeModeInfo
+get_lowres_mode(int drmfd, drmModeModeInfo *mode_default)
+{
+	drmModeRes *mode_resources = drmModeGetResources(drmfd);
+	drmModeModeInfo mode;
+	drmModeModeInfo std_1024_mode = {
+		.clock = 65000,
+		.hdisplay = 1024,
+		.hsync_start = 1048,
+		.hsync_end = 1184,
+		.htotal = 1344,
+		.hskew = 0,
+		.vdisplay = 768,
+		.vsync_start = 771,
+		.vsync_end = 777,
+		.vtotal = 806,
+		.vscan = 0,
+		.vrefresh = 60,
+		.flags = 0xA,
+		.type = 0x40,
+		.name = "Custom 1024x768",
+	};
+	bool found;
+	int limit = mode_default->vdisplay-SIZE;
+	int i, j;
+
+	if (!mode_resources) {
+		igt_warn("drmModeGetResources failed: %s\n", strerror(errno));
+		return std_1024_mode;
+	}
+
+	found = false;
+	for (i = 0; i < mode_resources->count_connectors; i++) {
+		drmModeConnector *connector;
+
+		connector = drmModeGetConnectorCurrent(drmfd,
+						       mode_resources->connectors[i]);
+		if (!connector) {
+			igt_warn("could not get connector %i: %s\n",
+				 mode_resources->connectors[i], strerror(errno));
+			continue;
+		}
+
+		if (!connector->count_modes)
+			continue;
+
+		for (j = 0; j < connector->count_modes; j++) {
+			mode = connector->modes[j];
+			if (mode.vdisplay < limit) {
+				found = true;
+				break;
+			}
+		}
+
+		drmModeFreeConnector(connector);
+	}
+
+	drmModeFreeResources(mode_resources);
+
+	if (!found)
+		return std_1024_mode;
+
+	return mode;
+}
+
+static void
+test_init(data_t *data, enum pipe pipe)
+{
+	data->pipe_crc = igt_pipe_crc_new(pipe, INTEL_PIPE_CRC_SOURCE_AUTO);
+}
+
+static void
+test_fini(data_t *data, igt_output_t *output)
+{
+	/* restore original mode */
+	igt_output_override_mode(output, NULL);
+
+	for (int i = 0; i < 2; i++)
+		igt_plane_set_fb(data->plane[i], NULL);
+
+	/* reset the constraint on the pipe */
+	igt_output_set_pipe(output, PIPE_ANY);
+
+	igt_pipe_crc_free(data->pipe_crc);
+}
+
+static int
+display_commit_mode(data_t *data, enum pipe pipe, int flags, igt_crc_t *crc)
+{
+	char buf[256];
+	struct drm_event *e = (void *)buf;
+	unsigned int vblank_start, vblank_stop;
+	int n, ret;
+
+	vblank_start = kmstest_get_vblank(data->display.drm_fd, pipe,
+					  DRM_VBLANK_NEXTONMISS);
+
+	ret = igt_display_try_commit_atomic(&data->display,
+					    flags,
+					    NULL);
+	igt_skip_on(ret != 0);
+
+	igt_set_timeout(1, "Stuck on page flip");
+	ret = read(data->display.drm_fd, buf, sizeof(buf));
+	igt_assert(ret >= 0);
+
+	vblank_stop = kmstest_get_vblank(data->display.drm_fd, pipe, 0);
+	igt_assert_eq(e->type, DRM_EVENT_FLIP_COMPLETE);
+	igt_reset_timeout();
+
+	n = igt_pipe_crc_get_crcs(data->pipe_crc, vblank_stop - vblank_start,
+				  &crc);
+	igt_assert_eq(n, vblank_stop - vblank_start);
+
+	return n;
+}
+
+static void
+check_mode(drmModeModeInfo *mode1, drmModeModeInfo *mode2)
+{
+	igt_assert_eq(mode1->hdisplay, mode2->hdisplay);
+	igt_assert_eq(mode1->vdisplay, mode2->vdisplay);
+	igt_assert_eq(mode1->vrefresh, mode2->vrefresh);
+}
+
+static drmModeModeInfo *
+test_setup(data_t *data, enum pipe pipe, uint64_t modifier, int flags,
+	   igt_output_t *output)
+{
+	struct kmstest_crtc crtc;
+	drmModeModeInfo *mode;
+	int size;
+	int i, x, y;
+
+	igt_output_set_pipe(output, pipe);
+
+	kmstest_get_crtc(pipe, &crtc);
+	igt_skip_on(crtc.nplanes > data->display.pipes[pipe].n_planes);
+	igt_skip_on(crtc.nplanes == 0);
+
+	for (i = 0; i < crtc.nplanes; i++)
+		data->plane[i] = igt_output_get_plane(output, crtc.plane[i].plane);
+
+	mode = igt_output_get_mode(output);
+
+	igt_create_color_fb(data->drm_fd, mode->hdisplay, mode->vdisplay,
+			    DRM_FORMAT_XRGB8888,
+			    modifier,
+			    0.0, 0.0, 1.0,
+			    &data->fb[0]);
+
+	igt_plane_set_fb(data->plane[0], &data->fb[0]);
+
+	/* yellow sprite plane in lower left corner */
+	for (i = IGT_PLANE_2; i < crtc.nplanes; i++) {
+		if (data->plane[i]->is_cursor)
+			size = 64;
+		else
+			size = SIZE;
+
+		x = 0;
+		y = mode->vdisplay - size;
+
+		igt_create_color_fb(data->drm_fd,
+				    size, size,
+				    data->plane[i]->is_cursor ? DRM_FORMAT_ARGB8888 : DRM_FORMAT_XRGB8888,
+				    data->plane[i]->is_cursor ? LOCAL_DRM_FORMAT_MOD_NONE : modifier,
+				    1.0, 1.0, 0.0,
+				    &data->fb[i]);
+
+		igt_plane_set_position(data->plane[i], x, y);
+		igt_plane_set_fb(data->plane[i], &data->fb[i]);
+	}
+
+	return mode;
+}
+
+static void
+test_plane_position_with_output(data_t *data, enum pipe pipe,
+				igt_output_t *output, uint64_t modifier)
+{
+	igt_crc_t *crc_hires1, *crc_hires2;
+	igt_crc_t *crc_lowres;
+	drmModeModeInfo mode_lowres;
+	drmModeModeInfo *mode1, *mode2, *mode3;
+	int ret, n;
+	int flags = DRM_MODE_PAGE_FLIP_EVENT | DRM_MODE_ATOMIC_ALLOW_MODESET;
+
+	igt_info("Testing connector %s using pipe %s\n",
+		 igt_output_name(output), kmstest_pipe_name(pipe));
+
+	test_init(data, pipe);
+
+	mode1 = test_setup(data, pipe, modifier, flags, output);
+
+	mode_lowres = get_lowres_mode(data->drm_fd, mode1);
+
+	igt_pipe_crc_start(data->pipe_crc);
+	ret = igt_display_try_commit2(&data->display, COMMIT_ATOMIC);
+	igt_skip_on(ret != 0);
+
+	n = igt_pipe_crc_get_crcs(data->pipe_crc, 1, &crc_hires1);
+	igt_assert_eq(1, n);
+
+	igt_assert_plane_visible(pipe, true);
+
+	/* switch to lower resolution */
+	igt_output_override_mode(output, &mode_lowres);
+	igt_output_set_pipe(output, pipe);
+
+	mode2 = igt_output_get_mode(output);
+
+	check_mode(&mode_lowres, mode2);
+
+	display_commit_mode(data, pipe, flags, crc_lowres);
+
+	igt_assert_plane_visible(pipe, false);
+
+	/* switch back to higher resolution */
+	igt_output_override_mode(output, NULL);
+	igt_output_set_pipe(output, pipe);
+
+	mode3 = igt_output_get_mode(output);
+
+	check_mode(mode1, mode3);
+
+	display_commit_mode(data, pipe, flags, crc_hires2);
+
+	igt_assert_plane_visible(pipe, true);
+
+	igt_pipe_crc_stop(data->pipe_crc);
+
+	test_fini(data, output);
+}
+
+static void
+test_plane_position(data_t *data, enum pipe pipe, uint64_t modifier)
+{
+	igt_output_t *output;
+	int connected_outs;
+	const int gen = intel_gen(intel_get_drm_devid(data->drm_fd));
+
+	igt_require(data->display.is_atomic);
+	igt_skip_on(pipe >= data->display.n_pipes);
+
+	if (modifier == LOCAL_I915_FORMAT_MOD_Y_TILED ||
+	    modifier == LOCAL_I915_FORMAT_MOD_Yf_TILED)
+		igt_skip_on(gen < 9);
+
+	connected_outs = 0;
+	for_each_valid_output_on_pipe(&data->display, pipe, output) {
+		test_plane_position_with_output(data, pipe, output, modifier);
+		connected_outs++;
+	}
+
+	igt_skip_on(connected_outs == 0);
+}
+
+static void
+run_tests_for_pipe(data_t *data, enum pipe pipe)
+{
+	igt_subtest_f("pipe-%s-tiling-none",
+		      kmstest_pipe_name(pipe))
+		test_plane_position(data, pipe, LOCAL_DRM_FORMAT_MOD_NONE);
+
+	igt_subtest_f("pipe-%s-tiling-x",
+		      kmstest_pipe_name(pipe))
+		test_plane_position(data, pipe, LOCAL_I915_FORMAT_MOD_X_TILED);
+
+	igt_subtest_f("pipe-%s-tiling-y",
+		      kmstest_pipe_name(pipe))
+		test_plane_position(data, pipe, LOCAL_I915_FORMAT_MOD_Y_TILED);
+
+	igt_subtest_f("pipe-%s-tiling-yf",
+		      kmstest_pipe_name(pipe))
+		test_plane_position(data, pipe, LOCAL_I915_FORMAT_MOD_Yf_TILED);
+}
+
+static data_t data;
+
+igt_main
+{
+	igt_skip_on_simulation();
+
+	igt_fixture {
+		data.drm_fd = drm_open_driver_master(DRIVER_ANY);
+
+		kmstest_set_vt_graphics_mode();
+
+		igt_require_pipe_crc();
+		igt_display_init(&data.display, data.drm_fd);
+	}
+
+	for (int pipe = 0; pipe < I915_MAX_PIPES; pipe++)
+		run_tests_for_pipe(&data, pipe);
+
+	igt_fixture {
+		igt_display_fini(&data.display);
+	}
+
+	igt_exit();
+}