[Intel-gfx] [PATCH i-g-t 3/3] tests: Add kms_atomic_interruptible test.

[Maarten Lankhorst]

To make sure that we have test exposure when allowing atomic ioctl's to
fail interruptibly, we add a test that will fail to lock the
mutexes until the fence is signaled.

If the locking is done interruptibly, our signal helper will interrupt
often, and with the statistics we can ensure that we received
enough interrupts to pass.

Signed-off-by: Maarten Lankhorst <maarten.lankhorst at linux.intel.com>
---
 tests/Makefile.sources           |   1 +
 tests/kms_atomic_interruptible.c | 193 +++++++++++++++++++++++++++++++++++++++
 2 files changed, 194 insertions(+)
 create mode 100644 tests/kms_atomic_interruptible.c

diff --git a/tests/Makefile.sources b/tests/Makefile.sources
index 5b98a5a371b8..9a6a846ab78a 100644
--- a/tests/Makefile.sources
+++ b/tests/Makefile.sources
@@ -171,6 +171,7 @@ TESTS_progs = \
 	kms_3d \
 	kms_addfb_basic \
 	kms_atomic \
+	kms_atomic_interruptible \
 	kms_atomic_transition \
 	kms_busy \
 	kms_ccs \
diff --git a/tests/kms_atomic_interruptible.c b/tests/kms_atomic_interruptible.c
new file mode 100644
index 000000000000..4015988c0e2c
--- /dev/null
+++ b/tests/kms_atomic_interruptible.c
@@ -0,0 +1,193 @@
+/*
+ * 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 "sw_sync.h"
+
+enum plane_test_type
+{
+	test_setmode,
+	test_setplane,
+	test_pageflip
+};
+
+static int block_plane(igt_display_t *display, igt_output_t *output, enum plane_test_type test_type, igt_plane_t *plane)
+{
+	int timeline = sw_sync_timeline_create();
+
+	igt_fork(child, 1) {
+		/* Ignore the signal helper, we need to block indefinitely on the fence. */
+		signal(SIGCONT, SIG_IGN);
+
+		if (test_type == test_setmode) {
+			igt_output_set_pipe(output, PIPE_NONE);
+			igt_plane_set_fb(plane, NULL);
+		}
+		igt_plane_set_fence_fd(plane, sw_sync_timeline_create_fence(timeline, 1));
+
+		igt_display_commit2(display, COMMIT_ATOMIC);
+	}
+
+	return timeline;
+}
+
+static void unblock(int block)
+{
+	sw_sync_timeline_inc(block, 1);
+	close(block);
+}
+
+static void run_plane_test(igt_display_t *display, enum pipe pipe, igt_output_t *output,
+			   enum plane_test_type test_type, unsigned plane_type, enum igt_commit_style style)
+{
+	drmModeModeInfo *mode;
+	igt_fb_t fb, fb2;
+	igt_plane_t *primary, *plane;
+	int block;
+
+	/*
+	 * Make sure we start with everything disabled to force a real modeset.
+	 * igt_display_init only sets sw state, and assumes the first test doesn't care
+	 * about hw state.
+	 */
+	igt_display_commit2(display, COMMIT_ATOMIC);
+
+	igt_output_set_pipe(output, pipe);
+
+	primary = igt_output_get_plane_type(output, DRM_PLANE_TYPE_PRIMARY);
+	plane = igt_output_get_plane_type(output, plane_type);
+	mode = igt_output_get_mode(output);
+
+	igt_create_fb(display->drm_fd, mode->hdisplay, mode->vdisplay,
+		      DRM_FORMAT_XRGB8888, LOCAL_DRM_FORMAT_MOD_NONE, &fb);
+
+	switch (plane_type) {
+	case DRM_PLANE_TYPE_PRIMARY:
+		igt_create_fb(display->drm_fd, mode->hdisplay, mode->vdisplay,
+			      DRM_FORMAT_XRGB8888, LOCAL_DRM_FORMAT_MOD_NONE, &fb2);
+		break;
+	case DRM_PLANE_TYPE_CURSOR:
+		igt_create_fb(display->drm_fd, 64, 64,
+		      DRM_FORMAT_ARGB8888, LOCAL_DRM_FORMAT_MOD_NONE, &fb2);
+		break;
+	}
+
+	if (test_type != test_setmode) {
+		igt_plane_set_fb(primary, &fb);
+		igt_display_commit2(display, COMMIT_ATOMIC);
+	}
+
+	igt_plane_set_fb(plane, &fb2);
+
+	block = block_plane(display, output, test_type, plane);
+	sleep(1);
+
+	igt_fork(child, 1) {
+		signal(SIGCONT, SIG_IGN);
+		igt_assert(sleep(5) == 0);
+
+		unblock(block);
+	}
+
+	/* run the test */
+	igt_fork_signal_helper();
+	if (test_type != test_pageflip)
+		igt_display_commit2(display, style);
+	else
+		do_or_die(drmModePageFlip(display->drm_fd, display->pipes[pipe].crtc_id, fb.fb_id, 0, NULL));
+	igt_stop_signal_helper();
+
+	/* Test whether we did interrupt the test? */
+	igt_assert_lt(2 * igt_signal_helper_get_hz(), igt_signal_helper_get_num());
+
+	igt_waitchildren();
+
+	igt_plane_set_fb(primary, NULL);
+	igt_output_set_pipe(output, PIPE_NONE);
+	igt_remove_fb(display->drm_fd, &fb);
+}
+
+igt_main
+{
+	igt_display_t display;
+	igt_output_t *output;
+	enum pipe pipe;
+
+	igt_skip_on_simulation();
+
+	igt_fixture {
+		display.drm_fd = drm_open_driver_master(DRIVER_ANY);
+
+		kmstest_set_vt_graphics_mode();
+
+		igt_display_init(&display, display.drm_fd);
+
+		igt_require(display.is_atomic);
+
+		igt_display_require_output(&display);
+
+		igt_require_sw_sync();
+	}
+
+	igt_subtest("legacy-setmode")
+		for_each_pipe_with_valid_output(&display, pipe, output) {
+			run_plane_test(&display, pipe, output, test_setmode, DRM_PLANE_TYPE_PRIMARY, COMMIT_LEGACY);
+			break;
+		}
+
+	igt_subtest("atomic-setmode")
+		for_each_pipe_with_valid_output(&display, pipe, output) {
+			run_plane_test(&display, pipe, output, test_setmode, DRM_PLANE_TYPE_PRIMARY, COMMIT_ATOMIC);
+			break;
+		}
+
+	igt_subtest("legacy-pageflip")
+		for_each_pipe_with_valid_output(&display, pipe, output) {
+			run_plane_test(&display, pipe, output, test_pageflip, DRM_PLANE_TYPE_PRIMARY, COMMIT_LEGACY);
+			break;
+		}
+
+	igt_subtest("legacy-cursor")
+		for_each_pipe_with_valid_output(&display, pipe, output) {
+			run_plane_test(&display, pipe, output, test_setplane, DRM_PLANE_TYPE_CURSOR, COMMIT_LEGACY);
+			break;
+		}
+
+	igt_subtest("universal-setplane-primary")
+		for_each_pipe_with_valid_output(&display, pipe, output) {
+			run_plane_test(&display, pipe, output, test_setplane, DRM_PLANE_TYPE_PRIMARY, COMMIT_UNIVERSAL);
+			break;
+		}
+
+	igt_subtest("universal-setplane-cursor")
+		for_each_pipe_with_valid_output(&display, pipe, output) {
+			run_plane_test(&display, pipe, output, test_setplane, DRM_PLANE_TYPE_CURSOR, COMMIT_UNIVERSAL);
+			break;
+		}
+
+	/* TODO: DPMS, gamma_set, setprop, getprop */
+	igt_fixture {
+		igt_display_fini(&display);
+	}
+}
-- 
2.11.0