[igt-dev] [PATCH i-g-t] tests/kms_content_protection: Convert tests to Dynamic

Modem, Bhanuprakash bhanuprakash.modem at intel.com
Mon Sep 5 09:43:23 UTC 2022


On Thu-01-09-2022 12:07 pm, Karthik B S wrote:
> Covert the existing subtests to dynamic subtests at pipe/output level.
> Also move the cleanup part outside the subtest so that it is run even if
> a failure is seen in the subtest.
> 
> Signed-off-by: Karthik B S <karthik.b.s at intel.com>
> ---
>   tests/kms_content_protection.c | 366 ++++++++++++++++++---------------
>   1 file changed, 196 insertions(+), 170 deletions(-)
> 
> diff --git a/tests/kms_content_protection.c b/tests/kms_content_protection.c
> index 3041f1cd..dde6345c 100644
> --- a/tests/kms_content_protection.c
> +++ b/tests/kms_content_protection.c
> @@ -273,17 +273,6 @@ static void test_cp_enable_with_retry(igt_output_t *output,
>   
>   }
>   
> -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_cp_lic(igt_output_t *output)
>   {
>   	bool ret;
> @@ -317,90 +306,62 @@ static bool write_srm_as_fw(const __u8 *srm, int len)
>   }
>   
>   static void test_content_protection_on_output(igt_output_t *output,
> +					      enum pipe pipe,
>   					      enum igt_commit_style s,
>   					      int content_type)
>   {
>   	igt_display_t *display = &data.display;
> -	igt_plane_t *primary;
> -	enum pipe pipe;
>   	bool ret;
>   
> -	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;
> -
> -		modeset_with_fb(pipe, output, s);
> -		test_cp_enable_with_retry(output, s, 3, content_type, false,
> -					  false);
> -
> -		if (data.cp_tests & CP_TYPE_CHANGE) {
> -			/* Type 1 -> Type 0 */
> -			test_cp_enable_with_retry(output, s, 3,
> -						  HDCP_CONTENT_TYPE_0, false,
> -						  true);
> -			/* Type 0 -> Type 1 */
> -			test_cp_enable_with_retry(output, s, 3,
> -						  content_type, false,
> -						  true);
> -		}
> -
> -		if (data.cp_tests & CP_MEI_RELOAD) {
> -			igt_assert_f(!igt_kmod_unload("mei_hdcp", 0),
> -				     "mei_hdcp unload failed");
> +	modeset_with_fb(pipe, output, s);

https://cgit.freedesktop.org/drm/igt-gpu-tools/tree/tests/kms_content_protection.c#n169 


Overiding with default mode: Does it really required?

> +	test_cp_enable_with_retry(output, s, 3, content_type, false,
> +				  false);
> +
> +	if (data.cp_tests & CP_TYPE_CHANGE) {
> +		/* Type 1 -> Type 0 */
> +		test_cp_enable_with_retry(output, s, 3,
> +					  HDCP_CONTENT_TYPE_0, false,
> +					  true);
> +		/* Type 0 -> Type 1 */
> +		test_cp_enable_with_retry(output, s, 3,
> +					  content_type, false,
> +					  true);
> +	}
>   
> -			/* Expected to fail */
> -			test_cp_enable_with_retry(output, s, 3,
> -						  content_type, true, false);
> +	if (data.cp_tests & CP_MEI_RELOAD) {
> +		igt_assert_f(!igt_kmod_unload("mei_hdcp", 0),
> +			     "mei_hdcp unload failed");
>   
> -			igt_assert_f(!igt_kmod_load("mei_hdcp", NULL),
> -				     "mei_hdcp load failed");
> +		/* Expected to fail */
> +		test_cp_enable_with_retry(output, s, 3,
> +					  content_type, true, false);
>   
> -			/* Expected to pass */
> -			test_cp_enable_with_retry(output, s, 3,
> -						  content_type, false, false);
> -		}
> +		igt_assert_f(!igt_kmod_load("mei_hdcp", NULL),
> +			     "mei_hdcp load failed");
>   
> -		if (data.cp_tests & CP_LIC)
> -			test_cp_lic(output);
> +		/* Expected to pass */
> +		test_cp_enable_with_retry(output, s, 3,
> +					  content_type, false, false);
> +	}
>   
> -		if (data.cp_tests & CP_DPMS) {
> -			igt_pipe_set_prop_value(display, pipe,
> -						IGT_CRTC_ACTIVE, 0);
> -			igt_display_commit2(display, s);
> +	if (data.cp_tests & CP_LIC)
> +		test_cp_lic(output);
>   
> -			igt_pipe_set_prop_value(display, pipe,
> -						IGT_CRTC_ACTIVE, 1);
> -			igt_display_commit2(display, s);
> +	if (data.cp_tests & CP_DPMS) {
> +		igt_pipe_set_prop_value(display, pipe,
> +					IGT_CRTC_ACTIVE, 0);
> +		igt_display_commit2(display, s);
>   
> -			ret = wait_for_prop_value(output, CP_ENABLED,
> -						  KERNEL_AUTH_TIME_ALLOWED_MSEC);
> -			if (!ret)
> -				test_cp_enable_with_retry(output, s, 2,
> -							  content_type, false,
> -							  false);
> -		}
> +		igt_pipe_set_prop_value(display, pipe,
> +					IGT_CRTC_ACTIVE, 1);
> +		igt_display_commit2(display, s);
>   
> -		test_cp_disable(output, s);
> -		primary = igt_output_get_plane_type(output,
> -						    DRM_PLANE_TYPE_PRIMARY);
> -		igt_plane_set_fb(primary, NULL);
> -		igt_output_set_pipe(output, PIPE_NONE);
> -
> -		/*
> -		 * 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;
> +		ret = wait_for_prop_value(output, CP_ENABLED,
> +					  KERNEL_AUTH_TIME_ALLOWED_MSEC);
> +		if (!ret)
> +			test_cp_enable_with_retry(output, s, 2,
> +						  content_type, false,
> +						  false);
>   	}
>   }
>   
> @@ -499,26 +460,64 @@ static bool output_hdcp_capable(igt_output_t *output, int content_type)

Please fix the indentation in output_hdcp_capable()
https://cgit.freedesktop.org/drm/igt-gpu-tools/tree/tests/kms_content_protection.c#n480 


>   		return true;
>   }
>   
> +static void
> +test_fini(igt_output_t *output, enum igt_commit_style s)
> +{
> +	igt_plane_t *primary;
> +
> +	test_cp_disable(output, s);
> +	primary = igt_output_get_plane_type(output,
> +					    DRM_PLANE_TYPE_PRIMARY);
> +	igt_plane_set_fb(primary, NULL);
> +	igt_output_set_pipe(output, PIPE_NONE);

Need a commit here.

> +}
> +
>   static void
>   test_content_protection(enum igt_commit_style s, int content_type)
>   {
>   	igt_display_t *display = &data.display;
>   	igt_output_t *output;
> +	enum pipe pipe;
>   	int valid_tests = 0;
>   
>   	if (data.cp_tests & CP_MEI_RELOAD)
>   		igt_require_f(igt_kmod_is_loaded("mei_hdcp"),
>   			      "mei_hdcp module is not loaded\n");
>   
> +	if (data.cp_tests & CP_UEVENT) {
> +		data.uevent_monitor = igt_watch_uevents();
> +		igt_flush_uevents(data.uevent_monitor);
> +	}
> +
> +	igt_display_reset(display);

Reset could be inside igt_dynamic()?

> +
>   	for_each_connected_output(display, output) {
>   		if (!output_hdcp_capable(output, content_type))
>   			continue;
>   
> -		test_content_protection_on_output(output, s, content_type);
> +		for_each_pipe(display, pipe) {
> +			if (!igt_pipe_connector_valid(pipe, output))
> +				continue;
> +
> +			igt_dynamic_f("pipe-%s-%s", kmstest_pipe_name(pipe), output->name)
> +				test_content_protection_on_output(output, pipe, s, content_type);
> +
> +			test_fini(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;
> +		}
> +
>   		valid_tests++;
>   	}
>   
>   	igt_require_f(valid_tests, "No connector found with HDCP capability\n");

This check is not required, igt_subtest_with_dynamic() will throw a SKIP 
if igt_dynamic() is not executed.

> +
> +	if (data.cp_tests & CP_UEVENT)
> +		igt_cleanup_uevents(data.uevent_monitor);
>   }
>   
>   static int parse_path_blob(char *blob_data)
> @@ -723,6 +722,94 @@ static void create_fbs(void)
>   			    0.f, 1.f, 0.f, &data.green);
>   }
>   
> +static const struct {
> +	const char *desc;
> +	const char *name;
> +	unsigned int cp_tests;
> +	bool content_type;
> +} subtests[] = {
> +	{ .desc = "Test content protection with atomic modesetting",
> +	  .name = "atomic",
> +	  .cp_tests = 0,
> +	  .content_type = HDCP_CONTENT_TYPE_0
> +	},
> +	{ .desc = "Test content protection with DPMS ON/OFF during atomic modesetting.",
> +	  .name = "atomic-dpms",
> +	  .cp_tests = CP_DPMS,
> +	  .content_type = HDCP_CONTENT_TYPE_0
> +	},
> +	{ .desc = "Test for the integrity of link.",
> +	  .name = "LIC",
> +	  .cp_tests = CP_LIC,
> +	  .content_type = HDCP_CONTENT_TYPE_0,
> +	},
> +	{ .desc = "Test content protection with content type 1 "
> +		  "that can be handled only through HDCP2.2.",
> +	  .name = "type1",
> +	  .cp_tests = 0,
> +	  .content_type = HDCP_CONTENT_TYPE_1,
> +	},
> +	{ .desc = "Test the teardown and rebuild of the interface between "
> +		  "I915 and mei hdcp.",
> +	  .name = "mei_interface",
> +	  .cp_tests = CP_MEI_RELOAD,
> +	  .content_type = HDCP_CONTENT_TYPE_1,
> +	},
> +	{ .desc = "Test the content type change when the content protection already enabled",
> +	  .name = "content_type_change",
> +	  .cp_tests = CP_TYPE_CHANGE,
> +	  .content_type = HDCP_CONTENT_TYPE_1,
> +	},
> +	{ .desc = "Test to detect the HDCP status change when we are reading the uevent "
> +		  "sent with the corresponding connector id and property id.",
> +	  .name = "uevent",
> +	  .cp_tests = CP_UEVENT,
> +	  .content_type = HDCP_CONTENT_TYPE_0,
> +	},
> +	/*
> +	 *  Testing the revocation check through SRM needs a HDCP sink with
> +	 *  programmable Ksvs or we need a uAPI from kernel to read the
> +	 *  connected HDCP sink's Ksv. With that we would be able to add that
> +	 *  Ksv into a SRM and send in for revocation check. Since we dont have
> +	 *  either of these options, we test SRM writing from userspace and
> +	 *  validation of the same at kernel. Something is better than nothing.
> +	 */
> +	{ .desc = "This test writes the facsimile SRM into the /lib/firmware/"
> +		  "and check the kernel parsing of it by invoking the hdcp authentication.",
> +	  .name = "srm",
> +	  .cp_tests = 0,
> +	  .content_type = HDCP_CONTENT_TYPE_0,
> +	},
> +};
> +
> +static const struct {
> +	const char *desc;
> +	const char *name;
> +	unsigned int cp_tests;
> +	bool content_type;
> +} mst_subtests[] = {
> +	{ .desc = "Test Content protection(Type 0) over DP MST.",
> +	  .name = "dp-mst-type-0",
> +	  .cp_tests = 0,
> +	  .content_type = HDCP_CONTENT_TYPE_0
> +	},
> +	{ .desc = "Test Content protection(Type 0) over DP MST with LIC.",
> +	  .name = "dp-mst-lic-type-0",
> +	  .cp_tests = CP_LIC,
> +	  .content_type = HDCP_CONTENT_TYPE_0
> +	},
> +	{ .desc = "Test Content protection(Type 1) over DP MST.",
> +	  .name = "dp-mst-type-1",
> +	  .cp_tests = 0,
> +	  .content_type = HDCP_CONTENT_TYPE_1,
> +	},
> +	{ .desc = "Test Content protection(Type 1) over DP MST with LIC.",
> +	  .name = "dp-mst-lic-type-1",
> +	  .cp_tests = CP_LIC,
> +	  .content_type = HDCP_CONTENT_TYPE_1,
> +	},
> +};
> +
>   igt_main
>   {
>   	igt_fixture {
> @@ -733,107 +820,46 @@ igt_main
>   	}
>   
>   	igt_describe("Test content protection with legacy style commit.");
> -	igt_subtest("legacy") {
> +	igt_subtest_with_dynamic("legacy") {
>   		data.cp_tests = 0;
>   		test_content_protection(COMMIT_LEGACY, HDCP_CONTENT_TYPE_0);
>   	}
>   
> -	igt_describe("Test content protection with atomic modesetting");
> -	igt_subtest("atomic") {
> -		igt_require(data.display.is_atomic);
> -		data.cp_tests = 0;
> -		test_content_protection(COMMIT_ATOMIC, HDCP_CONTENT_TYPE_0);
> -	}
> +	igt_subtest_group {
> +		igt_fixture
> +			igt_require(data.display.is_atomic);
>   
> -	igt_describe("Test content protection with DPMS ON/OFF during atomic modesetting.");
> -	igt_subtest("atomic-dpms") {
> -		igt_require(data.display.is_atomic);
> -		data.cp_tests = CP_DPMS;
> -		test_content_protection(COMMIT_ATOMIC, HDCP_CONTENT_TYPE_0);
> -	}
> +		for (int i = 0; i < ARRAY_SIZE(subtests); i++) {
> +			igt_describe_f("%s", subtests[i].desc);
>   
> -	igt_describe("Test for the integrity of link.");
> -	igt_subtest("LIC") {
> -		igt_require(data.display.is_atomic);
> -		data.cp_tests = CP_LIC;
> -		test_content_protection(COMMIT_ATOMIC, HDCP_CONTENT_TYPE_0);
> -	}
> +			igt_subtest_with_dynamic(subtests[i].name) {
> +				data.cp_tests = subtests[i].cp_tests;
>   
> -	igt_describe("Test content protection with content type 1 that "
> -		     "can be handled only through HDCP2.2.");
> -	igt_subtest("type1") {
> -		igt_require(data.display.is_atomic);
> -		test_content_protection(COMMIT_ATOMIC, HDCP_CONTENT_TYPE_1);
> -	}
> +				if (!strcmp(subtests[i].name, "srm")) {
> +					bool ret;
>   
> -	igt_describe("Test the teardown and rebuild of the interface between "
> -		     "I915 and mei hdcp.");
> -	igt_subtest("mei_interface") {
> -		igt_require(data.display.is_atomic);
> -		data.cp_tests = CP_MEI_RELOAD;
> -		test_content_protection(COMMIT_ATOMIC, HDCP_CONTENT_TYPE_1);
> -	}
> -
> -	igt_describe("Test the content type change when the content protection already "
> -		     "enabled.");
> -	igt_subtest("content_type_change") {
> -		igt_require(data.display.is_atomic);
> -		data.cp_tests = CP_TYPE_CHANGE;
> -		test_content_protection(COMMIT_ATOMIC, HDCP_CONTENT_TYPE_1);
> -	}
> +					ret = write_srm_as_fw((const __u8 *)facsimile_srm,
> +							     sizeof(facsimile_srm));
> +					igt_assert_f(ret, "SRM update failed");
> +				}
>   
> -	igt_describe("Test to detect the HDCP status change when we are reading the uevent "
> -		     "sent with the corresponding connector id and property id.");
> -	igt_subtest("uevent") {
> -		igt_require(data.display.is_atomic);
> -		data.cp_tests = CP_UEVENT;
> -		data.uevent_monitor = igt_watch_uevents();
> -		igt_flush_uevents(data.uevent_monitor);
> -		test_content_protection(COMMIT_ATOMIC, HDCP_CONTENT_TYPE_0);
> -		igt_cleanup_uevents(data.uevent_monitor);
> -	}
> -
> -	/*
> -	 *  Testing the revocation check through SRM needs a HDCP sink with
> -	 *  programmable Ksvs or we need a uAPI from kernel to read the
> -	 *  connected HDCP sink's Ksv. With that we would be able to add that
> -	 *  Ksv into a SRM and send in for revocation check. Since we dont have
> -	 *  either of these options, we test SRM writing from userspace and
> -	 *  validation of the same at kernel. Something is better than nothing.
> -	 */
> -	igt_describe("This test writes the facsimile SRM into the /lib/firmware/ "
> -		     "and check the kernel parsing of it by invoking the hdcp authentication.");
> -	igt_subtest("srm") {
> -		bool ret;
> -
> -		igt_require(data.display.is_atomic);
> -		data.cp_tests = 0;
> -		ret = write_srm_as_fw((const __u8 *)facsimile_srm,
> -				      sizeof(facsimile_srm));
> -		igt_assert_f(ret, "SRM update failed");
> -		test_content_protection(COMMIT_ATOMIC, HDCP_CONTENT_TYPE_0);
> -	}
> -
> -	igt_describe("Test Content protection over DP MST");
> -	igt_subtest("dp-mst-type-0") {
> -		test_content_protection_mst(HDCP_CONTENT_TYPE_0);
> +				test_content_protection(COMMIT_ATOMIC, subtests[i].content_type);
> +			}
> +		}
>   	}
>   
> -	igt_describe("Test Content protection over DP MST with LIC");
> -	igt_subtest("dp-mst-lic-type-0") {
> -		data.cp_tests = CP_LIC;
> -		test_content_protection_mst(HDCP_CONTENT_TYPE_0);
> -	}
> +	igt_subtest_group {
> +		igt_fixture
> +			igt_require(data.display.is_atomic);
>   
> -	igt_describe("Test Content protection over DP MST");
> -	igt_subtest("dp-mst-type-1") {
> -		test_content_protection_mst(HDCP_CONTENT_TYPE_1);
> -	}
> +		for (int i = 0; i < ARRAY_SIZE(mst_subtests); i++) {
> +			igt_describe_f("%s", mst_subtests[i].desc);
>   
> -	igt_describe("Test Content protection over DP MST with LIC");
> -	igt_subtest("dp-mst-lic-type-1") {
> -		data.cp_tests = CP_LIC;
> -		test_content_protection_mst(HDCP_CONTENT_TYPE_1);
> +			igt_subtest(mst_subtests[i].name) {
> +				data.cp_tests = mst_subtests[i].cp_tests;
> +				test_content_protection_mst(mst_subtests[i].content_type);

https://cgit.freedesktop.org/drm/igt-gpu-tools/tree/tests/kms_content_protection.c#n610

if pipe/output combo is invalid, we must try with another combo.

Also, do we need 2 or more outputs in case of MST?

> +			}
> +		}
>   	}
>   
>   	igt_fixture {

https://cgit.freedesktop.org/drm/igt-gpu-tools/tree/tests/kms_content_protection.c#n840

Can we move test_content_protection_cleanup() to test_fini()?

- Bhanu




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