tests/kms: Move Intel specific kms tests to i915 directory

As KMS tests on IGT are officially supported on multiple SoCs
and there is an active development on it. So, KMS tests are
meant to be generic and if we need to test few things specific
to Intel, we can use igt_require_intel(). But if the whole test
is Intel specific, then the best place for the test would be
tests/i915.

This patch will
* Move all Intel specific kms tests to tests/i915 directory.
* Update the tests those are generic but still open the driver
  as 'drm_open_driver_master(DRIVER_INTEL);'.

V2:
* Few more tests
V3:
* Remove cleanups (will submit separate patch later)
* Move few more tests to i915 dir (Karthik)
V4:
* Move kms_big_joiner.c to i915 dir (Karthik)

Cc: Ville Syrjälä <ville.syrjala@linux.intel.com>
Cc: Mark Yacoub <markyacoub@chromium.org>
Cc: Petri Latvala <petri.latvala@intel.com>
Cc: Vidya Srinivas <vidya.srinivas@intel.com>
Cc: Karthik B S <karthik.b.s@intel.com>
Signed-off-by: Bhanuprakash Modem <bhanuprakash.modem@intel.com>
Reviewed-by: Mark Yacoub <markyacoub@chromium.org>
Reviewed-by: Rodrigo Siqueira <Rodrigo.Siqueira@amd.com>
Reviewed-by: Karthik B S <karthik.b.s@intel.com>

1 files changed, 293 insertions, 0 deletions

diff --git a/tests/i915/kms_psr2_su.c b/tests/i915/kms_psr2_su.c
new file mode 100644
index 00000000..318deefd
--- /dev/null
+++ b/tests/i915/kms_psr2_su.c
@@ -0,0 +1,293 @@
+/*
+ * Copyright © 2019 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 "igt_sysfs.h"
+#include "igt_psr.h"
+#include <errno.h>
+#include <stdbool.h>
+#include <stdio.h>
+#include <string.h>
+#include <sys/timerfd.h>
+
+IGT_TEST_DESCRIPTION("Test PSR2 selective update");
+
+#define SQUARE_SIZE 100
+/* each selective update block is 4 lines tall */
+#define EXPECTED_NUM_SU_BLOCKS ((SQUARE_SIZE / 4) + (SQUARE_SIZE % 4 ? 1 : 0))
+
+/*
+ * Minimum is 15 as the number of frames to active PSR2 could be configured
+ * to 15 frames plus a few more in case we miss a selective update between
+ * debugfs reads.
+ */
+#define MAX_SCREEN_CHANGES 20
+
+enum operations {
+	PAGE_FLIP,
+	FRONTBUFFER,
+	LAST
+};
+
+static const char *op_str(enum operations op)
+{
+	static const char * const name[] = {
+		[PAGE_FLIP] = "page_flip",
+		[FRONTBUFFER] = "frontbuffer"
+	};
+
+	return name[op];
+}
+
+typedef struct {
+	int drm_fd;
+	int debugfs_fd;
+	igt_display_t display;
+	drmModeModeInfo *mode;
+	igt_output_t *output;
+	struct igt_fb fb[2];
+	enum operations op;
+	cairo_t *cr;
+	int change_screen_timerfd;
+	uint32_t screen_changes;
+} data_t;
+
+static void setup_output(data_t *data)
+{
+	igt_display_t *display = &data->display;
+	igt_output_t *output;
+	enum pipe pipe;
+
+	for_each_pipe_with_valid_output(display, pipe, output) {
+		drmModeConnectorPtr c = output->config.connector;
+
+		if (c->connector_type != DRM_MODE_CONNECTOR_eDP)
+			continue;
+
+		igt_output_set_pipe(output, pipe);
+		data->output = output;
+		data->mode = igt_output_get_mode(output);
+
+		return;
+	}
+}
+
+static void display_init(data_t *data)
+{
+	igt_display_require(&data->display, data->drm_fd);
+	setup_output(data);
+}
+
+static void display_fini(data_t *data)
+{
+	igt_display_fini(&data->display);
+}
+
+static void prepare(data_t *data)
+{
+	igt_plane_t *primary;
+
+	/* all green frame */
+	igt_create_color_fb(data->drm_fd,
+			    data->mode->hdisplay, data->mode->vdisplay,
+			    DRM_FORMAT_XRGB8888,
+			    DRM_FORMAT_MOD_NONE,
+			    0.0, 1.0, 0.0,
+			    &data->fb[0]);
+
+	if (data->op == PAGE_FLIP) {
+		cairo_t *cr;
+
+		igt_create_color_fb(data->drm_fd,
+				    data->mode->hdisplay, data->mode->vdisplay,
+				    DRM_FORMAT_XRGB8888,
+				    DRM_FORMAT_MOD_NONE,
+				    0.0, 1.0, 0.0,
+				    &data->fb[1]);
+
+		cr = igt_get_cairo_ctx(data->drm_fd, &data->fb[1]);
+		/* paint a white square */
+		igt_paint_color_alpha(cr, 0, 0, SQUARE_SIZE, SQUARE_SIZE,
+				      1.0, 1.0, 1.0, 1.0);
+		igt_put_cairo_ctx(cr);
+	} else if (data->op == FRONTBUFFER) {
+		data->cr = igt_get_cairo_ctx(data->drm_fd, &data->fb[0]);
+	}
+
+	primary = igt_output_get_plane_type(data->output,
+					    DRM_PLANE_TYPE_PRIMARY);
+
+	igt_plane_set_fb(primary, &data->fb[0]);
+	igt_display_commit2(&data->display, COMMIT_ATOMIC);
+}
+
+static bool update_screen_and_test(data_t *data)
+{
+	uint16_t su_blocks;
+	bool ret = false;
+
+	switch (data->op) {
+	case PAGE_FLIP: {
+		struct drm_mode_rect clip;
+		igt_plane_t *primary;
+
+		clip.x1 = clip.y1 = 0;
+		clip.x2 = clip.y2 = SQUARE_SIZE;
+
+		primary = igt_output_get_plane_type(data->output,
+						    DRM_PLANE_TYPE_PRIMARY);
+
+		igt_plane_replace_prop_blob(primary, IGT_PLANE_FB_DAMAGE_CLIPS,
+					    &clip, sizeof(clip));
+		igt_plane_set_fb(primary, &data->fb[data->screen_changes & 1]);
+		igt_display_commit2(&data->display, COMMIT_ATOMIC);
+		break;
+	}
+	case FRONTBUFFER: {
+		drmModeClip clip;
+
+		clip.x1 = clip.y1 = 0;
+		clip.x2 = clip.y2 = SQUARE_SIZE;
+
+		if (data->screen_changes & 1) {
+			/* go back to all green frame with a square */
+			igt_paint_color_alpha(data->cr, 0, 0, SQUARE_SIZE,
+					      SQUARE_SIZE, 1.0, 1.0, 1.0, 1.0);
+		} else {
+			/* go back to all green frame */
+			igt_paint_color_alpha(data->cr, 0, 0, SQUARE_SIZE,
+					      SQUARE_SIZE, 0, 1.0, 0, 1.0);
+		}
+
+		drmModeDirtyFB(data->drm_fd, data->fb[0].fb_id, &clip, 1);
+		break;
+	}
+	default:
+		igt_assert_f(data->op, "Operation not handled\n");
+	}
+
+	if (psr2_wait_su(data->debugfs_fd, &su_blocks)) {
+		ret = su_blocks == EXPECTED_NUM_SU_BLOCKS;
+
+		if (!ret)
+			igt_debug("Not matching SU blocks read: %u\n", su_blocks);
+	}
+
+	return ret;
+}
+
+static void run(data_t *data)
+{
+	bool result = false;
+
+	igt_assert(psr_wait_entry(data->debugfs_fd, PSR_MODE_2));
+
+	for (data->screen_changes = 0;
+	     data->screen_changes < MAX_SCREEN_CHANGES && !result;
+	     data->screen_changes++) {
+		uint64_t exp;
+		int r;
+
+		r = read(data->change_screen_timerfd, &exp, sizeof(exp));
+		if (r == sizeof(uint64_t) && exp)
+			result = update_screen_and_test(data);
+	}
+
+	igt_assert_f(result,
+		     "No matching selective update blocks read from debugfs\n");
+}
+
+static void cleanup(data_t *data)
+{
+	igt_plane_t *primary;
+
+	primary = igt_output_get_plane_type(data->output,
+					    DRM_PLANE_TYPE_PRIMARY);
+	igt_plane_set_fb(primary, NULL);
+	igt_display_commit2(&data->display, COMMIT_ATOMIC);
+
+	if (data->op == PAGE_FLIP)
+		igt_remove_fb(data->drm_fd, &data->fb[1]);
+	else if (data->op == FRONTBUFFER)
+		igt_put_cairo_ctx(data->cr);
+
+	igt_remove_fb(data->drm_fd, &data->fb[0]);
+}
+
+igt_main
+{
+	data_t data = {};
+
+	igt_fixture {
+		struct itimerspec interval;
+		int r;
+
+		data.drm_fd = drm_open_driver_master(DRIVER_INTEL);
+		data.debugfs_fd = igt_debugfs_dir(data.drm_fd);
+		kmstest_set_vt_graphics_mode();
+
+		igt_require_f(psr_sink_support(data.drm_fd,
+					       data.debugfs_fd, PSR_MODE_2),
+			      "Sink does not support PSR2\n");
+
+		display_init(&data);
+
+		/* Test if PSR2 can be enabled */
+		igt_require_f(psr_enable(data.drm_fd,
+					 data.debugfs_fd, PSR_MODE_2),
+			      "Error enabling PSR2\n");
+		data.op = FRONTBUFFER;
+		prepare(&data);
+		r = psr_wait_entry(data.debugfs_fd, PSR_MODE_2);
+		cleanup(&data);
+		if (!r)
+			psr_print_debugfs(data.debugfs_fd);
+		igt_require_f(r, "PSR2 can not be enabled\n");
+
+		/* blocking timerfd */
+		data.change_screen_timerfd = timerfd_create(CLOCK_MONOTONIC, 0);
+		igt_require(data.change_screen_timerfd != -1);
+		/* Changing screen at 30hz to support 30hz panels */
+		interval.it_value.tv_nsec = NSEC_PER_SEC / 30;
+		interval.it_value.tv_sec = 0;
+		interval.it_interval.tv_nsec = interval.it_value.tv_nsec;
+		interval.it_interval.tv_sec = interval.it_value.tv_sec;
+		r = timerfd_settime(data.change_screen_timerfd, 0, &interval, NULL);
+		igt_require_f(r != -1, "Error setting timerfd\n");
+	}
+
+	for (data.op = PAGE_FLIP; data.op < LAST; data.op++) {
+		igt_describe("Test that selective update works when screen changes");
+		igt_subtest_f("%s", op_str(data.op)) {
+			prepare(&data);
+			run(&data);
+			cleanup(&data);
+		}
+	}
+
+	igt_fixture {
+		close(data.debugfs_fd);
+		display_fini(&data);
+	}
+}