Re: [igt-dev] [PATCH i-g-t v4 2/2] kms_content_protection: Add Content Protection test

[Daniel Vetter <daniel@ffwll.ch>]

On Mon, Oct 22, 2018 at 07:53:49PM +0530, Ramalingam C wrote:
> Pretty simple test:
> - picks the hdcp capable output with suitable pipe and apply modeset.
> - checks the connected sink's hdcp capability through debugfs
> - apply a FB and wait for the flip completion.
> - clears the content protection property
> - verifies that it clears
> - sets the content protection property to desired
> - verifies that it transitions to enabled
> - incase of timeout three reattempts are implemented
> - clear the content protection property and modeset on the crtc
> 
> Above steps are repeated on all HDCP capable connectors for both
> legacy and atomic subtests.
> 
> v2:
>   dynamic subtests are dropped [Daniel]
> v3:
>   debugfs is used to detect the sink's hdcp capability [Daniel]
>   data structure is made as global variable.
> v4:
>   debugfs file from connector's debugfs dir is used [Daniel]
> 
> Signed-off-by: Sean Paul <seanpaul@chromium.org>
> Signed-off-by: Ramalingam C <ramalingam.c@intel.com>

I think both patches are good enough for merging. On both:

Reviewed-by: Daniel Vetter <daniel.vetter@ffwll.ch>

Need to wait for CI to approve them too, then we can pull them in.
-Daniel

> ---
>  lib/igt_kms.c                  |   1 +
>  lib/igt_kms.h                  |   1 +
>  tests/Makefile.sources         |   1 +
>  tests/kms_content_protection.c | 301 +++++++++++++++++++++++++++++++++++++++++
>  tests/meson.build              |   1 +
>  5 files changed, 305 insertions(+)
>  create mode 100644 tests/kms_content_protection.c
> 
> diff --git a/lib/igt_kms.c b/lib/igt_kms.c
> index 62d8468415c6..4231996c65ca 100644
> --- a/lib/igt_kms.c
> +++ b/lib/igt_kms.c
> @@ -194,6 +194,7 @@ const char * const igt_connector_prop_names[IGT_NUM_CONNECTOR_PROPS] = {
>  	[IGT_CONNECTOR_CRTC_ID] = "CRTC_ID",
>  	[IGT_CONNECTOR_DPMS] = "DPMS",
>  	[IGT_CONNECTOR_BROADCAST_RGB] = "Broadcast RGB",
> +	[IGT_CONNECTOR_CONTENT_PROTECTION] = "Content Protection",
>  };
>  
>  /*
> diff --git a/lib/igt_kms.h b/lib/igt_kms.h
> index 3a12f2782eed..aa068e58e607 100644
> --- a/lib/igt_kms.h
> +++ b/lib/igt_kms.h
> @@ -120,6 +120,7 @@ enum igt_atomic_connector_properties {
>         IGT_CONNECTOR_CRTC_ID,
>         IGT_CONNECTOR_DPMS,
>         IGT_CONNECTOR_BROADCAST_RGB,
> +       IGT_CONNECTOR_CONTENT_PROTECTION,
>         IGT_NUM_CONNECTOR_PROPS
>  };
>  
> diff --git a/tests/Makefile.sources b/tests/Makefile.sources
> index c84933f1d971..5af68a61df51 100644
> --- a/tests/Makefile.sources
> +++ b/tests/Makefile.sources
> @@ -174,6 +174,7 @@ TESTS_progs = \
>  	kms_chv_cursor_fail \
>  	kms_color \
>  	kms_concurrent \
> +	kms_content_protection\
>  	kms_crtc_background_color \
>  	kms_cursor_crc \
>  	kms_cursor_legacy \
> diff --git a/tests/kms_content_protection.c b/tests/kms_content_protection.c
> new file mode 100644
> index 000000000000..e8de7d359d09
> --- /dev/null
> +++ b/tests/kms_content_protection.c
> @@ -0,0 +1,301 @@
> +/*
> + * Copyright © 2018 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 <poll.h>
> +#include "igt.h"
> +#include "igt_sysfs.h"
> +
> +IGT_TEST_DESCRIPTION("Test content protection (HDCP)");
> +
> +struct data {
> +	int drm_fd;
> +	igt_display_t display;
> +} data;
> +
> +
> +static void flip_handler(int fd, unsigned int sequence, unsigned int tv_sec,
> +			 unsigned int tv_usec, void *_data)
> +{
> +	igt_debug("Flip event received.\n");
> +}
> +
> +static int wait_flip_event(void)
> +{
> +	int rc;
> +	drmEventContext evctx;
> +	struct pollfd pfd;
> +
> +	evctx.version = 2;
> +	evctx.vblank_handler = NULL;
> +	evctx.page_flip_handler = flip_handler;
> +
> +	pfd.fd = data.drm_fd;
> +	pfd.events = POLLIN;
> +	pfd.revents = 0;
> +
> +	rc = poll(&pfd, 1, 1000);
> +	switch (rc) {
> +	case 0:
> +		igt_info("Poll timeout. 1Sec.\n");
> +		rc = -ETIMEDOUT;
> +		break;
> +	case 1:
> +		rc = drmHandleEvent(data.drm_fd, &evctx);
> +		igt_assert_eq(rc, 0);
> +		rc = 0;
> +		break;
> +	default:
> +		igt_info("Unexpected poll rc %d\n", rc);
> +		rc = -1;
> +		break;
> +	}
> +
> +	return rc;
> +}
> +
> +static bool
> +wait_for_prop_value(igt_output_t *output, uint64_t expected,
> +		    uint32_t timeout_mSec)
> +{
> +	uint64_t val;
> +	int i;
> +
> +	for (i = 0; i < timeout_mSec; i++) {
> +		val = igt_output_get_prop(output,
> +					  IGT_CONNECTOR_CONTENT_PROTECTION);
> +		if (val == expected)
> +			return true;
> +		usleep(1000);
> +	}
> +	igt_info("prop_value mismatch %ld != %ld\n", val, expected);
> +
> +	return false;
> +}
> +
> +static void
> +commit_display_and_wait_for_flip(enum igt_commit_style s)
> +{
> +	int ret;
> +	uint32_t flag;
> +
> +	if (s == COMMIT_ATOMIC) {
> +		flag = DRM_MODE_PAGE_FLIP_EVENT | DRM_MODE_ATOMIC_ALLOW_MODESET;
> +		igt_display_commit_atomic(&data.display, flag, NULL);
> +
> +		ret = wait_flip_event();
> +		igt_assert_f(!ret, "wait_flip_event failed. %d\n", ret);
> +	} else {
> +		igt_display_commit2(&data.display, s);
> +
> +		/* Wait for 50mSec */
> +		usleep(50 * 1000);
> +	}
> +}
> +
> +static void
> +test_cp_enable_disable(const enum pipe pipe, igt_output_t *output,
> +		       enum igt_commit_style s)
> +{
> +	igt_display_t *display = &data.display;
> +	drmModeModeInfo mode;
> +	igt_plane_t *primary;
> +	struct igt_fb red, green;
> +	bool ret;
> +	int retry = 3;
> +
> +	igt_assert(kmstest_get_connector_default_mode(
> +			display->drm_fd, output->config.connector, &mode));
> +
> +	igt_output_override_mode(output, &mode);
> +	igt_output_set_pipe(output, pipe);
> +
> +	igt_create_color_fb(display->drm_fd, mode.hdisplay, mode.vdisplay,
> +			    DRM_FORMAT_XRGB8888, LOCAL_DRM_FORMAT_MOD_NONE,
> +			    1.f, 0.f, 0.f, &red);
> +	igt_create_color_fb(display->drm_fd, mode.hdisplay, mode.vdisplay,
> +			    DRM_FORMAT_XRGB8888, LOCAL_DRM_FORMAT_MOD_NONE,
> +			    0.f, 1.f, 0.f, &green);
> +
> +	primary = igt_output_get_plane_type(output, DRM_PLANE_TYPE_PRIMARY);
> +	igt_display_commit2(display, s);
> +
> +	igt_plane_set_fb(primary, &red);
> +
> +	/* Wait for Flip completion before starting the HDCP authentication */
> +	commit_display_and_wait_for_flip(s);
> +
> +	do {
> +		igt_output_set_prop_value(output,
> +					  IGT_CONNECTOR_CONTENT_PROTECTION, 0);
> +		igt_display_commit2(display, s);
> +
> +		/* Wait for HDCP to be disabled for fresh start. */
> +		ret = wait_for_prop_value(output, 0, 1000);
> +		igt_assert_f(ret, "Content Protection not cleared\n");
> +
> +		igt_output_set_prop_value(output,
> +					  IGT_CONNECTOR_CONTENT_PROTECTION, 1);
> +		igt_display_commit2(display, s);
> +
> +		/* Wait for 18000mSec (3 authentication * 6Sec) */
> +		ret = wait_for_prop_value(output, 2, 18000);
> +		if (ret) {
> +			igt_plane_set_fb(primary, &green);
> +			igt_display_commit2(display, s);
> +		}
> +
> +		if (!ret && --retry)
> +			igt_debug("Retry (%d/2) ...\n", 3 - retry);
> +	} while (retry && !ret);
> +
> +	igt_assert_f(ret, "Content Protection not enabled\n");
> +
> +	igt_output_set_prop_value(output, IGT_CONNECTOR_CONTENT_PROTECTION, 0);
> +	igt_plane_set_fb(primary, &red);
> +	igt_display_commit2(display, s);
> +
> +	/* Wait for HDCP to be disabled, before crtc off */
> +	wait_for_prop_value(output, 0, 1000);
> +
> +	igt_plane_set_fb(primary, NULL);
> +	igt_output_set_pipe(output, PIPE_NONE);
> +}
> +
> +static bool igt_pipe_is_free(igt_display_t *display, enum pipe pipe)
> +{
> +	int i;
> +
> +	for (i = 0; i < display->n_outputs; i++)
> +		if (display->outputs[i].pending_pipe == pipe)
> +			return false;
> +
> +	return true;
> +}
> +
> +static void
> +test_content_protection_on_output(igt_output_t *output,
> +				  enum igt_commit_style s)
> +{
> +	igt_display_t *display = &data.display;
> +	enum pipe pipe;
> +
> +	for_each_pipe(display, pipe) {
> +		if (!igt_pipe_connector_valid(pipe, output))
> +			continue;
> +
> +		/*
> +		 * If previous subtest of connector failed, pipe
> +		 * attached to that connector is not released.
> +		 * Because of that we have to choose the non
> +		 * attached pipe for this subtest.
> +		 */
> +		if (!igt_pipe_is_free(display, pipe))
> +			continue;
> +
> +		test_cp_enable_disable(pipe, output, s);
> +
> +		/*
> +		 * Testing a output with a pipe is enough for HDCP
> +		 * testing. No ROI in testing the connector with other
> +		 * pipes. So Break the loop on pipe.
> +		 */
> +		break;
> +	}
> +
> +}
> +
> +static void __debugfs_read(int fd, const char *param, char *buf, int len)
> +{
> +	len = igt_debugfs_simple_read(fd, param, buf, len);
> +	if (len < 0)
> +		igt_assert_eq(len, -ENODEV);
> +}
> +
> +#define debugfs_read(fd, p, arr) __debugfs_read(fd, p, arr, sizeof(arr))
> +
> +#define MAX_SINK_HDCP_CAP_BUF_LEN	500
> +static bool sink_hdcp_capable(igt_output_t *output)
> +{
> +	char buf[MAX_SINK_HDCP_CAP_BUF_LEN];
> +	int fd;
> +
> +	fd = igt_debugfs_connector_dir(data.drm_fd, output->name);
> +	if (fd < 0)
> +		return false;
> +
> +	debugfs_read(fd, "i915_hdcp_sink_capability", buf);
> +	close(fd);
> +
> +	igt_debug("Sink capability: %s\n", buf);
> +
> +	return strstr(buf, "HDCP1.4");
> +}
> +
> +
> +static void
> +test_content_protection(enum igt_commit_style s)
> +{
> +	igt_display_t *display = &data.display;
> +	igt_output_t *output;
> +	int valid_tests = 0;
> +
> +	for_each_connected_output(display, output) {
> +		if (!output->props[IGT_CONNECTOR_CONTENT_PROTECTION])
> +			continue;
> +
> +		igt_info("CP Test execution on %s\n", output->name);
> +		if (!sink_hdcp_capable(output)) {
> +			igt_info("\tSkip %s (Sink has no HDCP support)\n",
> +				 output->name);
> +			continue;
> +		}
> +
> +		test_content_protection_on_output(output, s);
> +		valid_tests++;
> +	}
> +
> +	igt_require_f(valid_tests, "No connector found with HDCP capability\n");
> +}
> +
> +igt_main
> +{
> +	igt_fixture {
> +		igt_skip_on_simulation();
> +
> +		data.drm_fd = drm_open_driver(DRIVER_ANY);
> +
> +		igt_display_init(&data.display, data.drm_fd);
> +	}
> +
> +	igt_subtest("legacy")
> +		test_content_protection(COMMIT_LEGACY);
> +
> +	igt_subtest("atomic") {
> +		igt_require(data.display.is_atomic);
> +		test_content_protection(COMMIT_ATOMIC);
> +	}
> +
> +	igt_fixture
> +		igt_display_fini(&data.display);
> +}
> diff --git a/tests/meson.build b/tests/meson.build
> index 17deb945ec95..a74de4ff0ece 100644
> --- a/tests/meson.build
> +++ b/tests/meson.build
> @@ -149,6 +149,7 @@ test_progs = [
>  	'kms_chv_cursor_fail',
>  	'kms_color',
>  	'kms_concurrent',
> +	'kms_content_protection',
>  	'kms_crtc_background_color',
>  	'kms_cursor_crc',
>  	'kms_cursor_legacy',
> -- 
> 2.7.4
> 

-- 
Daniel Vetter
Software Engineer, Intel Corporation
http://blog.ffwll.ch
_______________________________________________
igt-dev mailing list
igt-dev@lists.freedesktop.org
https://lists.freedesktop.org/mailman/listinfo/igt-dev