[igt-dev] [PATCH i-g-t v5 1/4] test/psr: Do not fail tests when kernel set a valid disabled reason

[igt-dev] [PATCH i-g-t v5 1/4] test/psr: Do not fail tests when kernel set a valid disabled reason

[José Roberto de Souza]

If kernel set a reason why PSR was not enabled the test should not
be reported as a error.
The reasons that kernel set are based in the modeset, sink and source
parameters and are not considered a error.

Cc: Dhinakaran Pandiyan <dhinakaran.pandiyan@intel.com>
Cc: Rodrigo Vivi <rodrigo.vivi@intel.com>
Signed-off-by: José Roberto de Souza <jose.souza@intel.com>
---
 lib/igt_psr.c   | 30 ++++++++++++++++++++++++++++++
 lib/igt_psr.h   |  1 +
 tests/kms_psr.c | 21 ++++++++++++++++++++-
 3 files changed, 51 insertions(+), 1 deletion(-)

diff --git a/lib/igt_psr.c b/lib/igt_psr.c
index d726fad5..591b2013 100644
--- a/lib/igt_psr.c
+++ b/lib/igt_psr.c
@@ -178,3 +178,33 @@ bool psr_sink_support(int debugfs_fd, enum psr_mode mode)
 		 */
 		return strstr(buf, "Sink support: yes [0x03]");
 }
+
+#define DISABLED_REASON_LOOKUP "Disabled reason: "
+
+bool psr_disabled_reason_get(int debugfs_fd, char *reason, int len)
+{
+	char buf[PSR_STATUS_MAX_LEN];
+	char *str;
+	int ret;
+
+	ret = igt_debugfs_simple_read(debugfs_fd, "i915_edp_psr_status", buf,
+				      sizeof(buf));
+	if (ret < 0)
+		return false;
+
+	str = strstr(buf, DISABLED_REASON_LOOKUP);
+	if (!str)
+		return false;
+
+	str = &str[strlen(DISABLED_REASON_LOOKUP)];
+
+	for (ret = 0; str[ret] != '\n'; ret++);
+
+	if (ret + 1 > len)
+		return false;
+
+	memcpy(reason, str, ret);
+	reason[ret] = '\0';
+
+	return true;
+}
diff --git a/lib/igt_psr.h b/lib/igt_psr.h
index 7e7017bf..465839d2 100644
--- a/lib/igt_psr.h
+++ b/lib/igt_psr.h
@@ -40,5 +40,6 @@ bool psr_wait_update(int debugfs_fd, enum psr_mode mode);
 bool psr_enable(int debugfs_fd, enum psr_mode);
 bool psr_disable(int debugfs_fd);
 bool psr_sink_support(int debugfs_fd, enum psr_mode);
+bool psr_disabled_reason_get(int debugfs_fd, char *reason, int len);
 
 #endif
diff --git a/tests/kms_psr.c b/tests/kms_psr.c
index 3e16a6bf..e854200e 100644
--- a/tests/kms_psr.c
+++ b/tests/kms_psr.c
@@ -387,11 +387,30 @@ static void setup_test_plane(data_t *data, int test_plane)
 
 static void test_setup(data_t *data)
 {
+	bool ret;
+
 	if (data->op_psr_mode == PSR_MODE_2)
 		igt_require(data->supports_psr2);
 	psr_enable_if_enabled(data);
 	setup_test_plane(data, data->test_plane_id);
-	igt_assert(psr_wait_entry_if_enabled(data));
+
+	ret = psr_wait_entry_if_enabled(data);
+	if (!ret) {
+		char reason[128];
+
+		ret = psr_disabled_reason_get(data->debugfs_fd, reason,
+					      sizeof(reason));
+
+		/* Check if it is a PSR2 reason while trying to enable PSR1 */
+		if (ret && data->op_psr_mode == PSR_MODE_1 &&
+		    strstr(reason, "PSR2"))
+			ret = false;
+
+		if (ret)
+			igt_skip("Skipping test because %s\n", reason);
+		else
+			igt_assert_f(ret, "PSR not enabled\n");
+	}
 }
 
 static void dpms_off_on(data_t *data)
-- 
2.20.1

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[igt-dev] [PATCH i-g-t v5 2/4] tests/intel-ci: Add basic PSR2 tests to fast feedback test list

[José Roberto de Souza]

Lets run the same PSR1 basic tests for PSR2 to caught PSR2
regressions faster.

Cc: Rodrigo Vivi <rodrigo.vivi@intel.com>
Cc: Dhinakaran Pandiyan <dhinakaran.pandiyan@intel.com>
Signed-off-by: José Roberto de Souza <jose.souza@intel.com>
---
 tests/intel-ci/fast-feedback.testlist | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/tests/intel-ci/fast-feedback.testlist b/tests/intel-ci/fast-feedback.testlist
index da3c4c8e..e48cb8a5 100644
--- a/tests/intel-ci/fast-feedback.testlist
+++ b/tests/intel-ci/fast-feedback.testlist
@@ -227,6 +227,10 @@ igt@kms_psr@primary_page_flip
 igt@kms_psr@cursor_plane_move
 igt@kms_psr@sprite_plane_onoff
 igt@kms_psr@primary_mmap_gtt
+igt@kms_psr@psr2_primary_page_flip
+igt@kms_psr@psr2_cursor_plane_move
+igt@kms_psr@psr2_sprite_plane_onoff
+igt@kms_psr@psr2_primary_mmap_gtt
 igt@kms_setmode@basic-clone-single-crtc
 igt@pm_backlight@basic-brightness
 igt@pm_rpm@basic-pci-d3-state
-- 
2.20.1

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[igt-dev] [PATCH i-g-t v5 3/4] test: Add PSR2 selective update tests

[José Roberto de Souza]

This tests checks if hardware is able to do selective update when
screen changes.
PSR2 don't trigger interruptions and the 'PSR2 SU status' register
is not kept loaded all the times, so it is necessary keep polling
PSR status debugfs until those values are loaded.

Also from DEEP_SLEEP state HW will not do a seletive update, as
most of the memory/context is lost in deep sleep state hardware will
need to exit PSR mode then wait a configured number of frames to
activate PSR again to then start doing seletive updates, that is why
just one screen change is not enough to pass this tests.

When a selective update happens and the values are loaded and read
from debugfs it is compared with the expected value of seletive
update blocks, if matches the polling is stopped and the test passed
otherwise it will wait until it reachs a maximum number o screen
changes to fail the test.

v2: Using new SU blocks debugfs output

v3:
- removed the timerfd to fail the test, now failing based in a
maximum number of screen changes
- removing thread to read debugfs, read from main thread is enough
- improved commit message

v4:
- getting cairo context for frontbuffer test in prepare()
- droppoing poll(), using blocking timerfd instead

v5:
- Doing a modeset before trying to enable PSR2

Cc: Rodrigo Vivi <rodrigo.vivi@intel.com>
Cc: Dhinakaran Pandiyan <dhinakaran.pandiyan@intel.com>
Signed-off-by: José Roberto de Souza <jose.souza@intel.com>
---
 lib/igt_psr.c          |  29 ++++
 lib/igt_psr.h          |   1 +
 tests/Makefile.sources |   1 +
 tests/kms_psr2_su.c    | 298 +++++++++++++++++++++++++++++++++++++++++
 tests/meson.build      |   1 +
 5 files changed, 330 insertions(+)
 create mode 100644 tests/kms_psr2_su.c

diff --git a/lib/igt_psr.c b/lib/igt_psr.c
index 591b2013..015cb4a4 100644
--- a/lib/igt_psr.c
+++ b/lib/igt_psr.c
@@ -208,3 +208,32 @@ bool psr_disabled_reason_get(int debugfs_fd, char *reason, int len)
 
 	return true;
 }
+
+#define PSR2_SU_BLOCK_STR_LOOKUP "PSR2 SU blocks:\n0\t"
+
+static bool
+psr2_read_last_num_su_blocks_val(int debugfs_fd, uint16_t *num_su_blocks)
+{
+	char buf[PSR_STATUS_MAX_LEN];
+	char *str;
+	int ret;
+
+	ret = igt_debugfs_simple_read(debugfs_fd, "i915_edp_psr_status", buf,
+				      sizeof(buf));
+	if (ret < 0)
+		return false;
+
+	str = strstr(buf, PSR2_SU_BLOCK_STR_LOOKUP);
+	if (!str)
+		return false;
+
+	str = &str[strlen(PSR2_SU_BLOCK_STR_LOOKUP)];
+	*num_su_blocks = (uint16_t)strtol(str, NULL, 10);
+
+	return true;
+}
+
+bool psr2_wait_su(int debugfs_fd, uint16_t *num_su_blocks)
+{
+	return igt_wait(psr2_read_last_num_su_blocks_val(debugfs_fd, num_su_blocks), 40, 1);
+}
diff --git a/lib/igt_psr.h b/lib/igt_psr.h
index 465839d2..b1e84e39 100644
--- a/lib/igt_psr.h
+++ b/lib/igt_psr.h
@@ -41,5 +41,6 @@ bool psr_enable(int debugfs_fd, enum psr_mode);
 bool psr_disable(int debugfs_fd);
 bool psr_sink_support(int debugfs_fd, enum psr_mode);
 bool psr_disabled_reason_get(int debugfs_fd, char *reason, int len);
+bool psr2_wait_su(int debugfs_fd, uint16_t *num_su_blocks);
 
 #endif
diff --git a/tests/Makefile.sources b/tests/Makefile.sources
index 519eac79..9174aecc 100644
--- a/tests/Makefile.sources
+++ b/tests/Makefile.sources
@@ -80,6 +80,7 @@ TESTS_progs = \
 	kms_plane_scaling \
 	kms_properties \
 	kms_psr \
+	kms_psr2_su \
 	kms_pwrite_crc \
 	kms_rmfb \
 	kms_rotation_crc \
diff --git a/tests/kms_psr2_su.c b/tests/kms_psr2_su.c
new file mode 100644
index 00000000..b0abb048
--- /dev/null
+++ b/tests/kms_psr2_su.c
@@ -0,0 +1,298 @@
+/*
+ * 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>
+#include "intel_bufmgr.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;
+	drm_intel_bufmgr *bufmgr;
+	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,
+			    LOCAL_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,
+				    LOCAL_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(data->drm_fd,  &data->fb[1], 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, NULL);
+
+	igt_display_commit(&data->display);
+	igt_plane_set_fb(primary, &data->fb[0]);
+	igt_display_commit(&data->display);
+
+	igt_assert(psr_wait_entry(data->debugfs_fd, PSR_MODE_2));
+
+	data->screen_changes = 0;
+}
+
+static bool update_screen_and_test(data_t *data)
+{
+	uint16_t su_blocks;
+	bool ret = false;
+
+	data->screen_changes++;
+
+	switch (data->op) {
+	case PAGE_FLIP: {
+		igt_plane_t *primary;
+
+		primary = igt_output_get_plane_type(data->output,
+						    DRM_PLANE_TYPE_PRIMARY);
+
+		igt_plane_set_fb(primary, &data->fb[data->screen_changes & 1]);
+		igt_display_commit(&data->display);
+		break;
+	}
+	case FRONTBUFFER: {
+		drmModeClip clip;
+		int r;
+
+		clip.x1 = clip.y1 = 0;
+		clip.x2 = clip.y2 = SQUARE_SIZE;
+
+		if (data->screen_changes & 1) {
+			/* go back to all green frame with with 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);
+		}
+
+		r = drmModeDirtyFB(data->drm_fd, data->fb[0].fb_id, &clip, 1);
+		igt_assert(r == 0 || r == -ENOSYS);
+		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;
+
+	return ret;
+}
+
+static void run(data_t *data)
+{
+	bool result = false;
+
+	while (data->screen_changes < MAX_SCREEN_CHANGES && !result) {
+		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_debug("Screen changes: %u\n", data->screen_changes);
+	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_commit(&data->display);
+
+	if (data->op == PAGE_FLIP)
+		igt_remove_fb(data->drm_fd, &data->fb[1]);
+	else if (data->op == FRONTBUFFER)
+		igt_put_cairo_ctx(data->drm_fd, &data->fb[0], data->cr);
+
+	igt_remove_fb(data->drm_fd, &data->fb[0]);
+}
+
+int main(int argc, char *argv[])
+{
+	data_t data = {};
+
+	igt_subtest_init_parse_opts(&argc, argv, "", NULL,
+				    NULL, NULL, NULL);
+	igt_skip_on_simulation();
+
+	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.debugfs_fd, PSR_MODE_2),
+			      "Sink does not support PSR2\n");
+
+		data.bufmgr = drm_intel_bufmgr_gem_init(data.drm_fd, 4096);
+		igt_assert(data.bufmgr);
+		drm_intel_bufmgr_gem_enable_reuse(data.bufmgr);
+
+		display_init(&data);
+
+		/* Test if PSR2 can be enabled */
+		igt_require_f(psr_enable(data.debugfs_fd, PSR_MODE_2),
+			      "Sink do not support PSR2\n");
+		data.op = FRONTBUFFER;
+		prepare(&data);
+		r = psr_wait_entry(data.debugfs_fd, PSR_MODE_2);
+		cleanup(&data);
+		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_subtest_f("%s", op_str(data.op)) {
+			prepare(&data);
+			run(&data);
+			cleanup(&data);
+		}
+	}
+
+	igt_fixture {
+		close(data.debugfs_fd);
+		drm_intel_bufmgr_destroy(data.bufmgr);
+		display_fini(&data);
+	}
+
+	igt_exit();
+}
diff --git a/tests/meson.build b/tests/meson.build
index e14ab2b4..682ca939 100644
--- a/tests/meson.build
+++ b/tests/meson.build
@@ -50,6 +50,7 @@ test_progs = [
 	'kms_plane_scaling',
 	'kms_properties',
 	'kms_psr',
+	'kms_psr2_su',
 	'kms_pwrite_crc',
 	'kms_rmfb',
 	'kms_rotation_crc',
-- 
2.20.1

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[igt-dev] [PATCH i-g-t v5 4/4] DO NOT MERGE: Check result of kms_psr2_su tests

[José Roberto de Souza]

Signed-off-by: José Roberto de Souza <jose.souza@intel.com>
---
 tests/intel-ci/fast-feedback.testlist | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/tests/intel-ci/fast-feedback.testlist b/tests/intel-ci/fast-feedback.testlist
index e48cb8a5..eb96a67f 100644
--- a/tests/intel-ci/fast-feedback.testlist
+++ b/tests/intel-ci/fast-feedback.testlist
@@ -231,6 +231,8 @@ igt@kms_psr@psr2_primary_page_flip
 igt@kms_psr@psr2_cursor_plane_move
 igt@kms_psr@psr2_sprite_plane_onoff
 igt@kms_psr@psr2_primary_mmap_gtt
+igt@kms_psr2_su@page_flip
+igt@kms_psr2_su@frontbuffer
 igt@kms_setmode@basic-clone-single-crtc
 igt@pm_backlight@basic-brightness
 igt@pm_rpm@basic-pci-d3-state
-- 
2.20.1

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[igt-dev] ✓ Fi.CI.BAT: success for series starting with [i-g-t,v5,1/4] test/psr: Do not fail tests when kernel set a valid disabled reason

[Patchwork]

== Series Details ==

Series: series starting with [i-g-t,v5,1/4] test/psr: Do not fail tests when kernel set a valid disabled reason
URL   : https://patchwork.freedesktop.org/series/55766/
State : success

== Summary ==

CI Bug Log - changes from CI_DRM_5488 -> IGTPW_2296
====================================================

Summary
-------

  **SUCCESS**

  No regressions found.

  External URL: https://patchwork.freedesktop.org/api/1.0/series/55766/revisions/1/mbox/

Possible new issues
-------------------

  Here are the unknown changes that may have been introduced in IGTPW_2296:

### IGT changes ###

#### Suppressed ####

  The following results come from untrusted machines, tests, or statuses.
  They do not affect the overall result.

  * {igt@kms_psr@psr2_primary_page_flip}:
    - fi-whl-u:           NOTRUN -> FAIL +5

  
Known issues
------------

  Here are the changes found in IGTPW_2296 that come from known issues:

### IGT changes ###

#### Issues hit ####

  * igt@i915_module_load@reload:
    - fi-blb-e6850:       PASS -> INCOMPLETE [fdo#107718]

  * igt@kms_flip@basic-flip-vs-dpms:
    - fi-skl-6700hq:      PASS -> DMESG-WARN [fdo#105998]

  
#### Possible fixes ####

  * igt@kms_busy@basic-flip-a:
    - fi-gdg-551:         FAIL [fdo#103182] -> PASS

  * igt@kms_chamelium@dp-edid-read:
    - fi-kbl-7500u:       WARN -> PASS

  * igt@kms_pipe_crc_basic@read-crc-pipe-a:
    - fi-byt-clapper:     FAIL [fdo#107362] -> PASS

  * igt@kms_pipe_crc_basic@read-crc-pipe-b-frame-sequence:
    - fi-byt-clapper:     FAIL [fdo#103191] / [fdo#107362] -> PASS +1

  * igt@pm_rpm@module-reload:
    - fi-skl-6770hq:      FAIL [fdo#108511] -> PASS

  
  {name}: This element is suppressed. This means it is ignored when computing
          the status of the difference (SUCCESS, WARNING, or FAILURE).

  [fdo#103182]: https://bugs.freedesktop.org/show_bug.cgi?id=103182
  [fdo#103191]: https://bugs.freedesktop.org/show_bug.cgi?id=103191
  [fdo#105998]: https://bugs.freedesktop.org/show_bug.cgi?id=105998
  [fdo#107362]: https://bugs.freedesktop.org/show_bug.cgi?id=107362
  [fdo#107718]: https://bugs.freedesktop.org/show_bug.cgi?id=107718
  [fdo#108511]: https://bugs.freedesktop.org/show_bug.cgi?id=108511
  [fdo#108654]: https://bugs.freedesktop.org/show_bug.cgi?id=108654
  [fdo#108915]: https://bugs.freedesktop.org/show_bug.cgi?id=108915
  [fdo#109271]: https://bugs.freedesktop.org/show_bug.cgi?id=109271


Participating hosts (44 -> 41)
------------------------------

  Additional (1): fi-icl-y 
  Missing    (4): fi-kbl-soraka fi-ilk-m540 fi-byt-squawks fi-bsw-cyan 


Build changes
-------------

    * IGT: IGT_4790 -> IGTPW_2296

  CI_DRM_5488: f13eede6ea3e780d900c5220bf09d764a80a3a8f @ git://anongit.freedesktop.org/gfx-ci/linux
  IGTPW_2296: https://intel-gfx-ci.01.org/tree/drm-tip/IGTPW_2296/
  IGT_4790: dcdf4b04e16312f8f52ad389388d834f9d74b8f0 @ git://anongit.freedesktop.org/xorg/app/intel-gpu-tools



== Testlist changes ==

+igt@kms_psr2_su@frontbuffer
+igt@kms_psr2_su@page_flip

== Logs ==

For more details see: https://intel-gfx-ci.01.org/tree/drm-tip/IGTPW_2296/
_______________________________________________
igt-dev mailing list
igt-dev@lists.freedesktop.org
https://lists.freedesktop.org/mailman/listinfo/igt-dev

[igt-dev] ✓ Fi.CI.IGT: success for series starting with [i-g-t,v5,1/4] test/psr: Do not fail tests when kernel set a valid disabled reason

[Patchwork]

== Series Details ==

Series: series starting with [i-g-t,v5,1/4] test/psr: Do not fail tests when kernel set a valid disabled reason
URL   : https://patchwork.freedesktop.org/series/55766/
State : success

== Summary ==

CI Bug Log - changes from CI_DRM_5488_full -> IGTPW_2296_full
====================================================

Summary
-------

  **WARNING**

  Minor unknown changes coming with IGTPW_2296_full need to be verified
  manually.
  
  If you think the reported changes have nothing to do with the changes
  introduced in IGTPW_2296_full, please notify your bug team to allow them
  to document this new failure mode, which will reduce false positives in CI.

  External URL: https://patchwork.freedesktop.org/api/1.0/series/55766/revisions/1/mbox/

Possible new issues
-------------------

  Here are the unknown changes that may have been introduced in IGTPW_2296_full:

### IGT changes ###

#### Warnings ####

  * igt@gem_eio@in-flight-immediate:
    - shard-kbl:          DMESG-FAIL -> DMESG-WARN

  
Known issues
------------

  Here are the changes found in IGTPW_2296_full that come from known issues:

### IGT changes ###

#### Issues hit ####

  * igt@gem_exec_schedule@pi-ringfull-blt:
    - shard-glk:          NOTRUN -> FAIL [fdo#103158]
    - shard-apl:          NOTRUN -> FAIL [fdo#103158]

  * igt@gem_exec_schedule@pi-ringfull-bsd2:
    - shard-kbl:          NOTRUN -> FAIL [fdo#103158]

  * igt@kms_busy@extended-modeset-hang-newfb-render-a:
    - shard-snb:          NOTRUN -> DMESG-WARN [fdo#107956]

  * igt@kms_ccs@pipe-a-crc-sprite-planes-basic:
    - shard-apl:          PASS -> FAIL [fdo#106510] / [fdo#108145]

  * igt@kms_cursor_crc@cursor-128x42-onscreen:
    - shard-kbl:          PASS -> FAIL [fdo#103232]

  * igt@kms_cursor_crc@cursor-256x85-onscreen:
    - shard-apl:          PASS -> FAIL [fdo#103232] +4

  * igt@kms_cursor_crc@cursor-64x64-suspend:
    - shard-glk:          PASS -> FAIL [fdo#103232] +1
    - shard-apl:          PASS -> FAIL [fdo#103191] / [fdo#103232]

  * igt@kms_cursor_legacy@2x-long-nonblocking-modeset-vs-cursor-atomic:
    - shard-glk:          NOTRUN -> FAIL [fdo#105454] / [fdo#106509]

  * igt@kms_flip@flip-vs-expired-vblank:
    - shard-glk:          PASS -> FAIL [fdo#102887]

  * igt@kms_plane@pixel-format-pipe-a-planes-source-clamping:
    - shard-glk:          PASS -> FAIL [fdo#108948]

  * igt@kms_plane@pixel-format-pipe-c-planes-source-clamping:
    - shard-apl:          PASS -> FAIL [fdo#108948]

  * igt@kms_plane@plane-position-covered-pipe-c-planes:
    - shard-apl:          PASS -> FAIL [fdo#103166] +2

  * igt@kms_plane_alpha_blend@pipe-b-alpha-7efc:
    - shard-kbl:          NOTRUN -> FAIL [fdo#108145] / [fdo#108590]

  * igt@kms_plane_alpha_blend@pipe-b-alpha-opaque-fb:
    - shard-glk:          PASS -> FAIL [fdo#108145]

  * igt@kms_plane_alpha_blend@pipe-b-alpha-transparant-fb:
    - shard-kbl:          NOTRUN -> FAIL [fdo#108145] +1

  * igt@kms_plane_alpha_blend@pipe-b-constant-alpha-max:
    - shard-glk:          NOTRUN -> FAIL [fdo#108145] +1
    - shard-apl:          NOTRUN -> FAIL [fdo#108145]

  * igt@kms_plane_multiple@atomic-pipe-c-tiling-x:
    - shard-glk:          PASS -> FAIL [fdo#103166] +1

  * igt@kms_rotation_crc@multiplane-rotation-cropping-top:
    - shard-apl:          PASS -> DMESG-FAIL [fdo#108950]

  
#### Possible fixes ####

  * igt@kms_available_modes_crc@available_mode_test_crc:
    - shard-glk:          FAIL [fdo#106641] -> PASS

  * igt@kms_color@pipe-b-degamma:
    - shard-apl:          FAIL [fdo#104782] -> PASS +1

  * igt@kms_cursor_crc@cursor-64x21-onscreen:
    - shard-glk:          FAIL [fdo#103232] -> PASS +2

  * igt@kms_cursor_crc@cursor-64x21-random:
    - shard-kbl:          FAIL [fdo#103232] -> PASS

  * igt@kms_plane@pixel-format-pipe-a-planes:
    - shard-kbl:          FAIL [fdo#103166] -> PASS

  * igt@kms_plane_alpha_blend@pipe-b-alpha-opaque-fb:
    - shard-apl:          FAIL [fdo#108145] -> PASS

  * igt@kms_plane_multiple@atomic-pipe-a-tiling-y:
    - shard-glk:          FAIL [fdo#103166] -> PASS +3

  * igt@kms_plane_multiple@atomic-pipe-b-tiling-none:
    - shard-apl:          FAIL [fdo#103166] -> PASS +1

  * igt@kms_setmode@basic:
    - shard-apl:          FAIL [fdo#99912] -> PASS

  * igt@perf_pmu@rc6-runtime-pm-long:
    - shard-kbl:          FAIL [fdo#105010] -> PASS

  
  {name}: This element is suppressed. This means it is ignored when computing
          the status of the difference (SUCCESS, WARNING, or FAILURE).

  [fdo#102887]: https://bugs.freedesktop.org/show_bug.cgi?id=102887
  [fdo#103158]: https://bugs.freedesktop.org/show_bug.cgi?id=103158
  [fdo#103166]: https://bugs.freedesktop.org/show_bug.cgi?id=103166
  [fdo#103191]: https://bugs.freedesktop.org/show_bug.cgi?id=103191
  [fdo#103232]: https://bugs.freedesktop.org/show_bug.cgi?id=103232
  [fdo#104782]: https://bugs.freedesktop.org/show_bug.cgi?id=104782
  [fdo#105010]: https://bugs.freedesktop.org/show_bug.cgi?id=105010
  [fdo#105454]: https://bugs.freedesktop.org/show_bug.cgi?id=105454
  [fdo#106509]: https://bugs.freedesktop.org/show_bug.cgi?id=106509
  [fdo#106510]: https://bugs.freedesktop.org/show_bug.cgi?id=106510
  [fdo#106641]: https://bugs.freedesktop.org/show_bug.cgi?id=106641
  [fdo#107956]: https://bugs.freedesktop.org/show_bug.cgi?id=107956
  [fdo#108145]: https://bugs.freedesktop.org/show_bug.cgi?id=108145
  [fdo#108590]: https://bugs.freedesktop.org/show_bug.cgi?id=108590
  [fdo#108948]: https://bugs.freedesktop.org/show_bug.cgi?id=108948
  [fdo#108950]: https://bugs.freedesktop.org/show_bug.cgi?id=108950
  [fdo#109271]: https://bugs.freedesktop.org/show_bug.cgi?id=109271
  [fdo#109278]: https://bugs.freedesktop.org/show_bug.cgi?id=109278
  [fdo#109373]: https://bugs.freedesktop.org/show_bug.cgi?id=109373
  [fdo#99912]: https://bugs.freedesktop.org/show_bug.cgi?id=99912
  [k.org#202321]: https://bugzilla.kernel.org/show_bug.cgi?id=202321


Participating hosts (7 -> 5)
------------------------------

  Missing    (2): shard-skl shard-iclb 


Build changes
-------------

    * IGT: IGT_4790 -> IGTPW_2296
    * Piglit: piglit_4509 -> None

  CI_DRM_5488: f13eede6ea3e780d900c5220bf09d764a80a3a8f @ git://anongit.freedesktop.org/gfx-ci/linux
  IGTPW_2296: https://intel-gfx-ci.01.org/tree/drm-tip/IGTPW_2296/
  IGT_4790: dcdf4b04e16312f8f52ad389388d834f9d74b8f0 @ git://anongit.freedesktop.org/xorg/app/intel-gpu-tools
  piglit_4509: fdc5a4ca11124ab8413c7988896eec4c97336694 @ git://anongit.freedesktop.org/piglit

== Logs ==

For more details see: https://intel-gfx-ci.01.org/tree/drm-tip/IGTPW_2296/
_______________________________________________
igt-dev mailing list
igt-dev@lists.freedesktop.org
https://lists.freedesktop.org/mailman/listinfo/igt-dev

Re: [igt-dev] [PATCH i-g-t v5 3/4] test: Add PSR2 selective update tests

[Pandiyan, Dhinakaran]

On Fri, 2019-01-25 at 17:32 -0800, José Roberto de Souza wrote:
> This tests checks if hardware is able to do selective update when
> screen changes.
> PSR2 don't trigger interruptions and the 'PSR2 SU status' register
> is not kept loaded all the times, so it is necessary keep polling
> PSR status debugfs until those values are loaded.
> 
> Also from DEEP_SLEEP state HW will not do a seletive update, as
> most of the memory/context is lost in deep sleep state hardware will
> need to exit PSR mode then wait a configured number of frames to
> activate PSR again to then start doing seletive updates, that is why
> just one screen change is not enough to pass this tests.
> 
> When a selective update happens and the values are loaded and read
> from debugfs it is compared with the expected value of seletive
> update blocks, if matches the polling is stopped and the test passed
> otherwise it will wait until it reachs a maximum number o screen
> changes to fail the test.
> 
> v2: Using new SU blocks debugfs output
> 
> v3:
> - removed the timerfd to fail the test, now failing based in a
> maximum number of screen changes
> - removing thread to read debugfs, read from main thread is enough
> - improved commit message
> 
> v4:
> - getting cairo context for frontbuffer test in prepare()
> - droppoing poll(), using blocking timerfd instead
> 
> v5:
> - Doing a modeset before trying to enable PSR2
> 
> Cc: Rodrigo Vivi <rodrigo.vivi@intel.com>
> Cc: Dhinakaran Pandiyan <dhinakaran.pandiyan@intel.com>
> Signed-off-by: José Roberto de Souza <jose.souza@intel.com>
> ---
>  lib/igt_psr.c          |  29 ++++
>  lib/igt_psr.h          |   1 +
>  tests/Makefile.sources |   1 +
>  tests/kms_psr2_su.c    | 298
> +++++++++++++++++++++++++++++++++++++++++
>  tests/meson.build      |   1 +
>  5 files changed, 330 insertions(+)
>  create mode 100644 tests/kms_psr2_su.c
> 
> diff --git a/lib/igt_psr.c b/lib/igt_psr.c
> index 591b2013..015cb4a4 100644
> --- a/lib/igt_psr.c
> +++ b/lib/igt_psr.c
> @@ -208,3 +208,32 @@ bool psr_disabled_reason_get(int debugfs_fd,
> char *reason, int len)
>  
>  	return true;
>  }
> +
> +#define PSR2_SU_BLOCK_STR_LOOKUP "PSR2 SU blocks:\n0\t"
> +
> +static bool
> +psr2_read_last_num_su_blocks_val(int debugfs_fd, uint16_t
> *num_su_blocks)
> +{
> +	char buf[PSR_STATUS_MAX_LEN];
> +	char *str;
> +	int ret;
> +
> +	ret = igt_debugfs_simple_read(debugfs_fd,
> "i915_edp_psr_status", buf,
> +				      sizeof(buf));
> +	if (ret < 0)
> +		return false;
> +
> +	str = strstr(buf, PSR2_SU_BLOCK_STR_LOOKUP);
> +	if (!str)
> +		return false;
> +
> +	str = &str[strlen(PSR2_SU_BLOCK_STR_LOOKUP)];
> +	*num_su_blocks = (uint16_t)strtol(str, NULL, 10);
> +
> +	return true;
> +}
> +
> +bool psr2_wait_su(int debugfs_fd, uint16_t *num_su_blocks)
> +{
> +	return igt_wait(psr2_read_last_num_su_blocks_val(debugfs_fd,
> num_su_blocks), 40, 1);
> +}
> diff --git a/lib/igt_psr.h b/lib/igt_psr.h
> index 465839d2..b1e84e39 100644
> --- a/lib/igt_psr.h
> +++ b/lib/igt_psr.h
> @@ -41,5 +41,6 @@ bool psr_enable(int debugfs_fd, enum psr_mode);
>  bool psr_disable(int debugfs_fd);
>  bool psr_sink_support(int debugfs_fd, enum psr_mode);
>  bool psr_disabled_reason_get(int debugfs_fd, char *reason, int len);
> +bool psr2_wait_su(int debugfs_fd, uint16_t *num_su_blocks);
>  
>  #endif
> diff --git a/tests/Makefile.sources b/tests/Makefile.sources
> index 519eac79..9174aecc 100644
> --- a/tests/Makefile.sources
> +++ b/tests/Makefile.sources
> @@ -80,6 +80,7 @@ TESTS_progs = \
>  	kms_plane_scaling \
>  	kms_properties \
>  	kms_psr \
> +	kms_psr2_su \
>  	kms_pwrite_crc \
>  	kms_rmfb \
>  	kms_rotation_crc \
> diff --git a/tests/kms_psr2_su.c b/tests/kms_psr2_su.c
> new file mode 100644
> index 00000000..b0abb048
> --- /dev/null
> +++ b/tests/kms_psr2_su.c
> @@ -0,0 +1,298 @@
> +/*
> + * 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>
> +#include "intel_bufmgr.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;
> +	drm_intel_bufmgr *bufmgr;
> +	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,
> +			    LOCAL_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,
> +				    LOCAL_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(data->drm_fd,  &data->fb[1], 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, NULL);
> +
> +	igt_display_commit(&data->display);
> +	igt_plane_set_fb(primary, &data->fb[0]);
> +	igt_display_commit(&data->display);
> +
> +	igt_assert(psr_wait_entry(data->debugfs_fd, PSR_MODE_2));
> +
> +	data->screen_changes = 0;
> +}
> +
> +static bool update_screen_and_test(data_t *data)
> +{
> +	uint16_t su_blocks;
> +	bool ret = false;
> +
> +	data->screen_changes++;
> +
> +	switch (data->op) {
> +	case PAGE_FLIP: {
> +		igt_plane_t *primary;
> +
> +		primary = igt_output_get_plane_type(data->output,
> +						    DRM_PLANE_TYPE_PRIM
> ARY);
> +
> +		igt_plane_set_fb(primary, &data->fb[data-
> >screen_changes & 1]);
> +		igt_display_commit(&data->display);
> +		break;
> +	}
> +	case FRONTBUFFER: {
> +		drmModeClip clip;
> +		int r;
> +
> +		clip.x1 = clip.y1 = 0;
> +		clip.x2 = clip.y2 = SQUARE_SIZE;
> +
> +		if (data->screen_changes & 1) {
> +			/* go back to all green frame with with 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);
> +		}
> +
> +		r = drmModeDirtyFB(data->drm_fd, data->fb[0].fb_id,
> &clip, 1);
> +		igt_assert(r == 0 || r == -ENOSYS);
> +		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;
> +
> +	return ret;
> +}
> +
> +static void run(data_t *data)
> +{
> +	bool result = false;
> +
> +	while (data->screen_changes < MAX_SCREEN_CHANGES && !result) {
> +		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_debug("Screen changes: %u\n", data->screen_changes);
> +	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_commit(&data->display);
> +
> +	if (data->op == PAGE_FLIP)
> +		igt_remove_fb(data->drm_fd, &data->fb[1]);
> +	else if (data->op == FRONTBUFFER)
> +		igt_put_cairo_ctx(data->drm_fd, &data->fb[0], data-
> >cr);
> +
> +	igt_remove_fb(data->drm_fd, &data->fb[0]);
> +}
> +
> +int main(int argc, char *argv[])
> +{
> +	data_t data = {};
> +
> +	igt_subtest_init_parse_opts(&argc, argv, "", NULL,
> +				    NULL, NULL, NULL);
> +	igt_skip_on_simulation();
> +
> +	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.debugfs_fd,
> PSR_MODE_2),
> +			      "Sink does not support PSR2\n");
> +
> +		data.bufmgr = drm_intel_bufmgr_gem_init(data.drm_fd,
> 4096);
> +		igt_assert(data.bufmgr);
> +		drm_intel_bufmgr_gem_enable_reuse(data.bufmgr);
> +
> +		display_init(&data);
> +
> +		/* Test if PSR2 can be enabled */
> +		igt_require_f(psr_enable(data.debugfs_fd, PSR_MODE_2),
> +			      "Sink do not support PSR2\n");
The comment and error message look wrong, a false from psr_enable()
indicates debugfs does not support PSR 2 mode change.

> +		data.op = FRONTBUFFER;
> +		prepare(&data);
> +		r = psr_wait_entry(data.debugfs_fd, PSR_MODE_2);
> +		cleanup(&data);
> +		igt_require_f(r, "PSR2 can not be enabled\n");
CI results shows the assertion in prepare() failed. The assertion
should have caused a skip on whl, no?

> +
> +		/* 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_subtest_f("%s", op_str(data.op)) {
> +			prepare(&data);
> +			run(&data);
> +			cleanup(&data);
> +		}
> +	}
> +
> +	igt_fixture {
> +		close(data.debugfs_fd);
> +		drm_intel_bufmgr_destroy(data.bufmgr);
> +		display_fini(&data);
> +	}
> +
> +	igt_exit();
> +}
> diff --git a/tests/meson.build b/tests/meson.build
> index e14ab2b4..682ca939 100644
> --- a/tests/meson.build
> +++ b/tests/meson.build
> @@ -50,6 +50,7 @@ test_progs = [
>  	'kms_plane_scaling',
>  	'kms_properties',
>  	'kms_psr',
> +	'kms_psr2_su',
>  	'kms_pwrite_crc',
>  	'kms_rmfb',
>  	'kms_rotation_crc',
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Re: [igt-dev] [PATCH i-g-t v5 3/4] test: Add PSR2 selective update tests

[Souza, Jose]

[-- Attachment #1.1: Type: text/plain, Size: 14941 bytes --]

On Tue, 2019-01-29 at 15:52 -0800, Pandiyan, Dhinakaran wrote:
> On Fri, 2019-01-25 at 17:32 -0800, José Roberto de Souza wrote:
> > This tests checks if hardware is able to do selective update when
> > screen changes.
> > PSR2 don't trigger interruptions and the 'PSR2 SU status' register
> > is not kept loaded all the times, so it is necessary keep polling
> > PSR status debugfs until those values are loaded.
> > 
> > Also from DEEP_SLEEP state HW will not do a seletive update, as
> > most of the memory/context is lost in deep sleep state hardware
> > will
> > need to exit PSR mode then wait a configured number of frames to
> > activate PSR again to then start doing seletive updates, that is
> > why
> > just one screen change is not enough to pass this tests.
> > 
> > When a selective update happens and the values are loaded and read
> > from debugfs it is compared with the expected value of seletive
> > update blocks, if matches the polling is stopped and the test
> > passed
> > otherwise it will wait until it reachs a maximum number o screen
> > changes to fail the test.
> > 
> > v2: Using new SU blocks debugfs output
> > 
> > v3:
> > - removed the timerfd to fail the test, now failing based in a
> > maximum number of screen changes
> > - removing thread to read debugfs, read from main thread is enough
> > - improved commit message
> > 
> > v4:
> > - getting cairo context for frontbuffer test in prepare()
> > - droppoing poll(), using blocking timerfd instead
> > 
> > v5:
> > - Doing a modeset before trying to enable PSR2
> > 
> > Cc: Rodrigo Vivi <rodrigo.vivi@intel.com>
> > Cc: Dhinakaran Pandiyan <dhinakaran.pandiyan@intel.com>
> > Signed-off-by: José Roberto de Souza <jose.souza@intel.com>
> > ---
> >  lib/igt_psr.c          |  29 ++++
> >  lib/igt_psr.h          |   1 +
> >  tests/Makefile.sources |   1 +
> >  tests/kms_psr2_su.c    | 298
> > +++++++++++++++++++++++++++++++++++++++++
> >  tests/meson.build      |   1 +
> >  5 files changed, 330 insertions(+)
> >  create mode 100644 tests/kms_psr2_su.c
> > 
> > diff --git a/lib/igt_psr.c b/lib/igt_psr.c
> > index 591b2013..015cb4a4 100644
> > --- a/lib/igt_psr.c
> > +++ b/lib/igt_psr.c
> > @@ -208,3 +208,32 @@ bool psr_disabled_reason_get(int debugfs_fd,
> > char *reason, int len)
> >  
> >  	return true;
> >  }
> > +
> > +#define PSR2_SU_BLOCK_STR_LOOKUP "PSR2 SU blocks:\n0\t"
> > +
> > +static bool
> > +psr2_read_last_num_su_blocks_val(int debugfs_fd, uint16_t
> > *num_su_blocks)
> > +{
> > +	char buf[PSR_STATUS_MAX_LEN];
> > +	char *str;
> > +	int ret;
> > +
> > +	ret = igt_debugfs_simple_read(debugfs_fd,
> > "i915_edp_psr_status", buf,
> > +				      sizeof(buf));
> > +	if (ret < 0)
> > +		return false;
> > +
> > +	str = strstr(buf, PSR2_SU_BLOCK_STR_LOOKUP);
> > +	if (!str)
> > +		return false;
> > +
> > +	str = &str[strlen(PSR2_SU_BLOCK_STR_LOOKUP)];
> > +	*num_su_blocks = (uint16_t)strtol(str, NULL, 10);
> > +
> > +	return true;
> > +}
> > +
> > +bool psr2_wait_su(int debugfs_fd, uint16_t *num_su_blocks)
> > +{
> > +	return igt_wait(psr2_read_last_num_su_blocks_val(debugfs_fd,
> > num_su_blocks), 40, 1);
> > +}
> > diff --git a/lib/igt_psr.h b/lib/igt_psr.h
> > index 465839d2..b1e84e39 100644
> > --- a/lib/igt_psr.h
> > +++ b/lib/igt_psr.h
> > @@ -41,5 +41,6 @@ bool psr_enable(int debugfs_fd, enum psr_mode);
> >  bool psr_disable(int debugfs_fd);
> >  bool psr_sink_support(int debugfs_fd, enum psr_mode);
> >  bool psr_disabled_reason_get(int debugfs_fd, char *reason, int
> > len);
> > +bool psr2_wait_su(int debugfs_fd, uint16_t *num_su_blocks);
> >  
> >  #endif
> > diff --git a/tests/Makefile.sources b/tests/Makefile.sources
> > index 519eac79..9174aecc 100644
> > --- a/tests/Makefile.sources
> > +++ b/tests/Makefile.sources
> > @@ -80,6 +80,7 @@ TESTS_progs = \
> >  	kms_plane_scaling \
> >  	kms_properties \
> >  	kms_psr \
> > +	kms_psr2_su \
> >  	kms_pwrite_crc \
> >  	kms_rmfb \
> >  	kms_rotation_crc \
> > diff --git a/tests/kms_psr2_su.c b/tests/kms_psr2_su.c
> > new file mode 100644
> > index 00000000..b0abb048
> > --- /dev/null
> > +++ b/tests/kms_psr2_su.c
> > @@ -0,0 +1,298 @@
> > +/*
> > + * 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>
> > +#include "intel_bufmgr.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;
> > +	drm_intel_bufmgr *bufmgr;
> > +	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,
> > +			    LOCAL_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,
> > +				    LOCAL_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(data->drm_fd,  &data->fb[1], 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, NULL);
> > +
> > +	igt_display_commit(&data->display);
> > +	igt_plane_set_fb(primary, &data->fb[0]);
> > +	igt_display_commit(&data->display);
> > +
> > +	igt_assert(psr_wait_entry(data->debugfs_fd, PSR_MODE_2));
> > +
> > +	data->screen_changes = 0;
> > +}
> > +
> > +static bool update_screen_and_test(data_t *data)
> > +{
> > +	uint16_t su_blocks;
> > +	bool ret = false;
> > +
> > +	data->screen_changes++;
> > +
> > +	switch (data->op) {
> > +	case PAGE_FLIP: {
> > +		igt_plane_t *primary;
> > +
> > +		primary = igt_output_get_plane_type(data->output,
> > +						    DRM_PLANE_TYPE_PRIM
> > ARY);
> > +
> > +		igt_plane_set_fb(primary, &data->fb[data-
> > > screen_changes & 1]);
> > +		igt_display_commit(&data->display);
> > +		break;
> > +	}
> > +	case FRONTBUFFER: {
> > +		drmModeClip clip;
> > +		int r;
> > +
> > +		clip.x1 = clip.y1 = 0;
> > +		clip.x2 = clip.y2 = SQUARE_SIZE;
> > +
> > +		if (data->screen_changes & 1) {
> > +			/* go back to all green frame with with 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);
> > +		}
> > +
> > +		r = drmModeDirtyFB(data->drm_fd, data->fb[0].fb_id,
> > &clip, 1);
> > +		igt_assert(r == 0 || r == -ENOSYS);
> > +		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;
> > +
> > +	return ret;
> > +}
> > +
> > +static void run(data_t *data)
> > +{
> > +	bool result = false;
> > +
> > +	while (data->screen_changes < MAX_SCREEN_CHANGES && !result) {
> > +		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_debug("Screen changes: %u\n", data->screen_changes);
> > +	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_commit(&data->display);
> > +
> > +	if (data->op == PAGE_FLIP)
> > +		igt_remove_fb(data->drm_fd, &data->fb[1]);
> > +	else if (data->op == FRONTBUFFER)
> > +		igt_put_cairo_ctx(data->drm_fd, &data->fb[0], data-
> > > cr);
> > +
> > +	igt_remove_fb(data->drm_fd, &data->fb[0]);
> > +}
> > +
> > +int main(int argc, char *argv[])
> > +{
> > +	data_t data = {};
> > +
> > +	igt_subtest_init_parse_opts(&argc, argv, "", NULL,
> > +				    NULL, NULL, NULL);
> > +	igt_skip_on_simulation();
> > +
> > +	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.debugfs_fd,
> > PSR_MODE_2),
> > +			      "Sink does not support PSR2\n");
> > +
> > +		data.bufmgr = drm_intel_bufmgr_gem_init(data.drm_fd,
> > 4096);
> > +		igt_assert(data.bufmgr);
> > +		drm_intel_bufmgr_gem_enable_reuse(data.bufmgr);
> > +
> > +		display_init(&data);
> > +
> > +		/* Test if PSR2 can be enabled */
> > +		igt_require_f(psr_enable(data.debugfs_fd, PSR_MODE_2),
> > +			      "Sink do not support PSR2\n");
> The comment and error message look wrong, a false from psr_enable()
> indicates debugfs does not support PSR 2 mode change.

You are right, changing to: Error enabling PSR2
What do you think?


> 
> > +		data.op = FRONTBUFFER;
> > +		prepare(&data);
> > +		r = psr_wait_entry(data.debugfs_fd, PSR_MODE_2);
> > +		cleanup(&data);
> > +		igt_require_f(r, "PSR2 can not be enabled\n");
> CI results shows the assertion in prepare() failed. The assertion
> should have caused a skip on whl, no?

Huum it failed in the prepare() inside of igt_fixture(), one the last
things that prepare() does is igt_assert(psr_wait_entry(data-
>debugfs_fd, PSR_MODE_2)).
So I'm moving it to the begining of run(), it should fix the issue. 


> 
> > +
> > +		/* 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_subtest_f("%s", op_str(data.op)) {
> > +			prepare(&data);
> > +			run(&data);
> > +			cleanup(&data);
> > +		}
> > +	}
> > +
> > +	igt_fixture {
> > +		close(data.debugfs_fd);
> > +		drm_intel_bufmgr_destroy(data.bufmgr);
> > +		display_fini(&data);
> > +	}
> > +
> > +	igt_exit();
> > +}
> > diff --git a/tests/meson.build b/tests/meson.build
> > index e14ab2b4..682ca939 100644
> > --- a/tests/meson.build
> > +++ b/tests/meson.build
> > @@ -50,6 +50,7 @@ test_progs = [
> >  	'kms_plane_scaling',
> >  	'kms_properties',
> >  	'kms_psr',
> > +	'kms_psr2_su',
> >  	'kms_pwrite_crc',
> >  	'kms_rmfb',
> >  	'kms_rotation_crc',

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Re: [igt-dev] [PATCH i-g-t v5 3/4] test: Add PSR2 selective update tests

[Dhinakaran Pandiyan]

On Tue, 2019-01-29 at 17:34 -0800, Souza, Jose wrote:
> On Tue, 2019-01-29 at 15:52 -0800, Pandiyan, Dhinakaran wrote:
> > On Fri, 2019-01-25 at 17:32 -0800, José Roberto de Souza wrote:
> > > This tests checks if hardware is able to do selective update when
> > > screen changes.
> > > PSR2 don't trigger interruptions and the 'PSR2 SU status'
> > > register
> > > is not kept loaded all the times, so it is necessary keep polling
> > > PSR status debugfs until those values are loaded.
> > > 
> > > Also from DEEP_SLEEP state HW will not do a seletive update, as
> > > most of the memory/context is lost in deep sleep state hardware
> > > will
> > > need to exit PSR mode then wait a configured number of frames to
> > > activate PSR again to then start doing seletive updates, that is
> > > why
> > > just one screen change is not enough to pass this tests.
> > > 
> > > When a selective update happens and the values are loaded and
> > > read
> > > from debugfs it is compared with the expected value of seletive
> > > update blocks, if matches the polling is stopped and the test
> > > passed
> > > otherwise it will wait until it reachs a maximum number o screen
> > > changes to fail the test.
> > > 
> > > v2: Using new SU blocks debugfs output
> > > 
> > > v3:
> > > - removed the timerfd to fail the test, now failing based in a
> > > maximum number of screen changes
> > > - removing thread to read debugfs, read from main thread is
> > > enough
> > > - improved commit message
> > > 
> > > v4:
> > > - getting cairo context for frontbuffer test in prepare()
> > > - droppoing poll(), using blocking timerfd instead
> > > 
> > > v5:
> > > - Doing a modeset before trying to enable PSR2
> > > 
> > > Cc: Rodrigo Vivi <rodrigo.vivi@intel.com>
> > > Cc: Dhinakaran Pandiyan <dhinakaran.pandiyan@intel.com>
> > > Signed-off-by: José Roberto de Souza <jose.souza@intel.com>
> > > ---
> > >  lib/igt_psr.c          |  29 ++++
> > >  lib/igt_psr.h          |   1 +
> > >  tests/Makefile.sources |   1 +
> > >  tests/kms_psr2_su.c    | 298
> > > +++++++++++++++++++++++++++++++++++++++++
> > >  tests/meson.build      |   1 +
> > >  5 files changed, 330 insertions(+)
> > >  create mode 100644 tests/kms_psr2_su.c
> > > 
> > > diff --git a/lib/igt_psr.c b/lib/igt_psr.c
> > > index 591b2013..015cb4a4 100644
> > > --- a/lib/igt_psr.c
> > > +++ b/lib/igt_psr.c
> > > @@ -208,3 +208,32 @@ bool psr_disabled_reason_get(int debugfs_fd,
> > > char *reason, int len)
> > >  
> > >  	return true;
> > >  }
> > > +
> > > +#define PSR2_SU_BLOCK_STR_LOOKUP "PSR2 SU blocks:\n0\t"
> > > +
> > > +static bool
> > > +psr2_read_last_num_su_blocks_val(int debugfs_fd, uint16_t
> > > *num_su_blocks)
> > > +{
> > > +	char buf[PSR_STATUS_MAX_LEN];
> > > +	char *str;
> > > +	int ret;
> > > +
> > > +	ret = igt_debugfs_simple_read(debugfs_fd,
> > > "i915_edp_psr_status", buf,
> > > +				      sizeof(buf));
> > > +	if (ret < 0)
> > > +		return false;
> > > +
> > > +	str = strstr(buf, PSR2_SU_BLOCK_STR_LOOKUP);
> > > +	if (!str)
> > > +		return false;
> > > +
> > > +	str = &str[strlen(PSR2_SU_BLOCK_STR_LOOKUP)];
> > > +	*num_su_blocks = (uint16_t)strtol(str, NULL, 10);
> > > +
> > > +	return true;
> > > +}
> > > +
> > > +bool psr2_wait_su(int debugfs_fd, uint16_t *num_su_blocks)
> > > +{
> > > +	return igt_wait(psr2_read_last_num_su_blocks_val(debugfs_fd,
> > > num_su_blocks), 40, 1);
> > > +}
> > > diff --git a/lib/igt_psr.h b/lib/igt_psr.h
> > > index 465839d2..b1e84e39 100644
> > > --- a/lib/igt_psr.h
> > > +++ b/lib/igt_psr.h
> > > @@ -41,5 +41,6 @@ bool psr_enable(int debugfs_fd, enum psr_mode);
> > >  bool psr_disable(int debugfs_fd);
> > >  bool psr_sink_support(int debugfs_fd, enum psr_mode);
> > >  bool psr_disabled_reason_get(int debugfs_fd, char *reason, int
> > > len);
> > > +bool psr2_wait_su(int debugfs_fd, uint16_t *num_su_blocks);
> > >  
> > >  #endif
> > > diff --git a/tests/Makefile.sources b/tests/Makefile.sources
> > > index 519eac79..9174aecc 100644
> > > --- a/tests/Makefile.sources
> > > +++ b/tests/Makefile.sources
> > > @@ -80,6 +80,7 @@ TESTS_progs = \
> > >  	kms_plane_scaling \
> > >  	kms_properties \
> > >  	kms_psr \
> > > +	kms_psr2_su \
> > >  	kms_pwrite_crc \
> > >  	kms_rmfb \
> > >  	kms_rotation_crc \
> > > diff --git a/tests/kms_psr2_su.c b/tests/kms_psr2_su.c
> > > new file mode 100644
> > > index 00000000..b0abb048
> > > --- /dev/null
> > > +++ b/tests/kms_psr2_su.c
> > > @@ -0,0 +1,298 @@
> > > +/*
> > > + * 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>
> > > +#include "intel_bufmgr.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;
> > > +	drm_intel_bufmgr *bufmgr;
> > > +	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);
This function does not do anything on it's own, please consider
inlining setup_output() instead.

> > > +}
> > > +
> > > +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,
> > > +			    LOCAL_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,
> > > +				    LOCAL_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(data->drm_fd,  &data->fb[1], 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, NULL);
> > > +
> > > +	igt_display_commit(&data->display);
> > > +	igt_plane_set_fb(primary, &data->fb[0]);
> > > +	igt_display_commit(&data->display);
> > > +
> > > +	igt_assert(psr_wait_entry(data->debugfs_fd, PSR_MODE_2));
> > > +
> > > +	data->screen_changes = 0;
> > > +}
> > > +
> > > +static bool update_screen_and_test(data_t *data)
> > > +{
> > > +	uint16_t su_blocks;
> > > +	bool ret = false;
> > > +
> > > +	data->screen_changes++;
> > > +
> > > +	switch (data->op) {
> > > +	case PAGE_FLIP: {
> > > +		igt_plane_t *primary;
> > > +
> > > +		primary = igt_output_get_plane_type(data->output,
> > > +						    DRM_PLANE_TYPE_PRIM
> > > ARY);
> > > +
> > > +		igt_plane_set_fb(primary, &data->fb[data-
> > > > screen_changes & 1]);
> > > 
> > > +		igt_display_commit(&data->display);
COMMIT_ATOMIC, like we discussed earlier.

> > > +		break;
> > > +	}
> > > +	case FRONTBUFFER: {
> > > +		drmModeClip clip;
> > > +		int r;
> > > +
> > > +		clip.x1 = clip.y1 = 0;
> > > +		clip.x2 = clip.y2 = SQUARE_SIZE;
> > > +
> > > +		if (data->screen_changes & 1) {
> > > +			/* go back to all green frame with with 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);
> > > +		}
> > > +
> > > +		r = drmModeDirtyFB(data->drm_fd, data->fb[0].fb_id,
> > > &clip, 1);
> > > +		igt_assert(r == 0 || r == -ENOSYS);
> > > +		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;
We could perhaps have a stricter restriction, immediately fail for non-
zero values that do not match "EXPECTED_NUM_SU_BLOCKS"


> > > +
> > > +	return ret;
> > > +}
> > > +
> > > +static void run(data_t *data)
> > > +{
> > > +	bool result = false;
> > > +
> > > +	while (data->screen_changes < MAX_SCREEN_CHANGES && !result) {
> > > +		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_debug("Screen changes: %u\n", data->screen_changes);
> > > +	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_commit(&data->display);
> > > +
> > > +	if (data->op == PAGE_FLIP)
> > > +		igt_remove_fb(data->drm_fd, &data->fb[1]);
> > > +	else if (data->op == FRONTBUFFER)
> > > +		igt_put_cairo_ctx(data->drm_fd, &data->fb[0], data-
> > > > cr);
> > > 
> > > +
> > > +	igt_remove_fb(data->drm_fd, &data->fb[0]);
> > > +}
> > > +
> > > +int main(int argc, char *argv[])
> > > +{
> > > +	data_t data = {};
> > > +
> > > +	igt_subtest_init_parse_opts(&argc, argv, "", NULL,
> > > +				    NULL, NULL, NULL);
> > > +	igt_skip_on_simulation();
> > > +
> > > +	igt_fixture {
> > > +		struct itimerspec interval;
> > > +		int r;
bool 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.debugfs_fd,
> > > PSR_MODE_2),
> > > +			      "Sink does not support PSR2\n");
> > > +
> > > +		data.bufmgr = drm_intel_bufmgr_gem_init(data.drm_fd,
> > > 4096);
> > > +		igt_assert(data.bufmgr);
> > > +		drm_intel_bufmgr_gem_enable_reuse(data.bufmgr);
> > > +
> > > +		display_init(&data);
> > > +
> > > +		/* Test if PSR2 can be enabled */
> > > +		igt_require_f(psr_enable(data.debugfs_fd, PSR_MODE_2),
I noticed that this is broken in the kernel, PSR mode does not get
restored correctly after the test ends. switching_psr() in intel_psr.c
needs to be fixed to switch to PSR1 for cases when test sets the
default debugfs mode.



> > > +			      "Sink do not support PSR2\n");
> > 
> > The comment and error message look wrong, a false from psr_enable()
> > indicates debugfs does not support PSR 2 mode change.
> 
> You are right, changing to: Error enabling PSR2
> What do you think?
"Kernel does not support enabling PSR2 via debugfs"
> 
> 
> > 
> > > +		data.op = FRONTBUFFER;
> > > +		prepare(&data);
> > > +		r = psr_wait_entry(data.debugfs_fd, PSR_MODE_2);
> > > +		cleanup(&data);
> > > +		igt_require_f(r, "PSR2 can not be enabled\n");
> > 
> > CI results shows the assertion in prepare() failed. The assertion
> > should have caused a skip on whl, no?
> 
> Huum it failed in the prepare() inside of igt_fixture(), one the last
> things that prepare() does is igt_assert(psr_wait_entry(data-
> > debugfs_fd, PSR_MODE_2)).
> 
> So I'm moving it to the begining of run(), it should fix the issue. 
> 
> 
> > 
> > > +
> > > +		/* 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;
Can we do something like this to reduce these lines?
struct itimerspec interval = {{NSEC_PER_SEC / 30, 0},
			      {NSEC_PER_SEC / 30, 0}};


> > > +		r = timerfd_settime(data.change_screen_timerfd, 0,
> > > &interval, NULL);
Okay, now I see you chose int.

> > > +		igt_require_f(r != -1, "Error setting timerfd\n");
> > > +	}
> > > +
> > > +	for (data.op = PAGE_FLIP; data.op < LAST; data.op++) {
> > > +		igt_subtest_f("%s", op_str(data.op)) {
> > > +			prepare(&data);
> > > +			run(&data);
> > > +			cleanup(&data);
> > > +		}
> > > +	}
> > > +
> > > +	igt_fixture {
> > > +		close(data.debugfs_fd);
> > > +		drm_intel_bufmgr_destroy(data.bufmgr);
> > > +		display_fini(&data);
> > > +	}
> > > +
> > > +	igt_exit();
> > > +}
> > > diff --git a/tests/meson.build b/tests/meson.build
> > > index e14ab2b4..682ca939 100644
> > > --- a/tests/meson.build
> > > +++ b/tests/meson.build
> > > @@ -50,6 +50,7 @@ test_progs = [
> > >  	'kms_plane_scaling',
> > >  	'kms_properties',
> > >  	'kms_psr',
> > > +	'kms_psr2_su',
> > >  	'kms_pwrite_crc',
> > >  	'kms_rmfb',
> > >  	'kms_rotation_crc',

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