[Intel-gfx] [PATCH v2 2/2] kms_content_protection: Add Content Protection test
Ramalingam C
ramalingam.c at intel.com
Tue Dec 19 14:28:18 UTC 2017
Adding few more findings from the IGT usage with kernel solutions.
On Wednesday 13 December 2017 04:07 PM, Ramalingam C wrote:
> Sean,
>
> Adding few more observations.
>
>
> On Thursday 07 December 2017 05:47 AM, Sean Paul wrote:
>> Pretty simple test:
>> - initializes the output
>> - clears the content protection property
>> - verifies that it clears
>> - sets the content protection property to desired
>> - verifies that it transitions to enabled
>>
>> Does this for both legacy and atomic.
>>
>> Changes in v2:
>> - Don't check for i915 gen
>> - Skip test if Content Protection property is absent
>>
>> Signed-off-by: Sean Paul <seanpaul at chromium.org>
>> ---
>> lib/igt_kms.c | 3 +-
>> lib/igt_kms.h | 1 +
>> tests/Makefile.sources | 1 +
>> tests/kms_content_protection.c | 129
>> +++++++++++++++++++++++++++++++++++++++++
>> tests/meson.build | 1 +
>> 5 files changed, 134 insertions(+), 1 deletion(-)
>> create mode 100644 tests/kms_content_protection.c
>>
>> diff --git a/lib/igt_kms.c b/lib/igt_kms.c
>> index 125ecb19..907db694 100644
>> --- a/lib/igt_kms.c
>> +++ b/lib/igt_kms.c
>> @@ -190,7 +190,8 @@ const char
>> *igt_connector_prop_names[IGT_NUM_CONNECTOR_PROPS] = {
>> "scaling mode",
>> "CRTC_ID",
>> "DPMS",
>> - "Broadcast RGB"
>> + "Broadcast RGB",
>> + "Content Protection"
>> };
>> /*
>> diff --git a/lib/igt_kms.h b/lib/igt_kms.h
>> index 2a480bf3..93e59dc7 100644
>> --- a/lib/igt_kms.h
>> +++ b/lib/igt_kms.h
>> @@ -118,6 +118,7 @@ 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 34ca71a0..e0466411 100644
>> --- a/tests/Makefile.sources
>> +++ b/tests/Makefile.sources
>> @@ -179,6 +179,7 @@ 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 00000000..5d61b257
>> --- /dev/null
>> +++ b/tests/kms_content_protection.c
>> @@ -0,0 +1,129 @@
>> +/*
>> + * Copyright © 2017 Google, Inc.
>> + *
>> + * 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"
>> +
>> +IGT_TEST_DESCRIPTION("Test content protection (HDCP)");
>> +
>> +typedef struct {
>> + int drm_fd;
>> + igt_display_t display;
>> +} data_t;
>> +
>> +static bool
>> +wait_for_prop_value(igt_output_t *output, uint64_t expected)
>> +{
>> + uint64_t val;
>> + int i;
>> +
>> + for (i = 0; i < 2000; i++) {
> we need 5+Sec to complete the Second part of authentication, in case
> of repeater with max downstream topology.
> So we might need to wait for 6000(6Sec) loops!?
>> + 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
>> +test_pipe_output(igt_display_t *display, const enum pipe pipe,
>> + igt_output_t *output, enum igt_commit_style s)
>> +{
>> + drmModeModeInfo mode;
>> + igt_plane_t *primary;
>> + struct igt_fb red;
>> + bool ret;
>> +
>> + 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);
>> + primary = igt_output_get_plane_type(output,
>> DRM_PLANE_TYPE_PRIMARY);
>> + igt_plane_set_fb(primary, &red);
>> + igt_display_commit2(display, s);
>> +
>> + igt_output_set_prop_value(output,
>> IGT_CONNECTOR_CONTENT_PROTECTION, 0);
>> + igt_display_commit2(display, s);
>> +
>> + ret = wait_for_prop_value(output, 0);
>> + igt_require_f(ret, "Content Protection not cleared\n");
> When expected property state is not met, you might want to use
> igt_assert_f to fail the subtest. Here you are just skipping the subtest.
>> +
>> + igt_output_set_prop_value(output,
>> IGT_CONNECTOR_CONTENT_PROTECTION, 1);
>> + igt_display_commit2(display, s);
>> +
>> + ret = wait_for_prop_value(output, 2);
As there are range of HDCP sinks which might fail to provide the R0 in
100mSec in the first attempt. But passes the condition in next attempt.
In the testing it is observed that many panel's widely used showcase
above mentioned behavior.
So we need to retry on HDCP enable before declaring the HDCP failure.
>> + igt_require_f(ret, "Content Protection not enabled\n");
> same as above. igt_assert_f needed?
>
> And when you are done with a connector(output), we cant leave the
> content protection in desired state.
> Else when we enable the connector for some other IGT, content
> protection authentication will be attempted by kernel.
> So when we are done with a connector, we need to clear the content
> protection state(set to OFF) of the connector.
>
>> +
>> + igt_plane_set_fb(primary, NULL);
>> + igt_output_set_pipe(output, PIPE_NONE);
>> +}
>> +
>> +static void
>> +test_content_protection(igt_display_t *display, enum
>> igt_commit_style s)
>> +{
>> + igt_output_t *output;
>> + enum pipe pipe;
>> + int valid_tests = 0;
>> +
>> + for_each_pipe_with_valid_output(display, pipe, output) {
From the testing of this IGT with kernel changes, observed a need of
relooking at HDCP subtests definition. Reasoning is as follows.
And here we are taking each pipe and their compatible
outputs(connectors) for hdcp test. Like PIPEA + HDMI-A-1, PIPEB+HDMI-A-1
etc.
But as HDCP is associated to connectors, we need to iterate on hdcp
capable connector and choose the compatible pipe.
In that way, we will be able test the HDCP on all hdcp capable connectors.
And since irrespective of the hdcp status (pass/fail) on a connector, we
need to test hdcp on other connectors one after another.
So this can be achieved if the test of HDCP on each connector is
implemented as different IGT subtests.
>> + if (!output->props[IGT_CONNECTOR_CONTENT_PROTECTION])
>> + continue;
>> +
>> + test_pipe_output(display, pipe, output, s);
>> + valid_tests++;
>> + }
>> + igt_require_f(valid_tests, "no support for content proteciton
>> found\n");
>> +}
>> +
>> +igt_main
>> +{
>> + data_t data = {};
>> +
>> + igt_fixture {
>> + igt_skip_on_simulation();
>> +
>> + data.drm_fd = drm_open_driver(DRIVER_ANY);
> You need Master privilege here. Hence might want to use
> drm_open_driver_master() instead.
>
> -Ram
>> +
>> + igt_display_init(&data.display, data.drm_fd);
>> + }
>> +
>> +
>> + igt_subtest("legacy")
>> + test_content_protection(&data.display, COMMIT_LEGACY);
As discussed above, we need to consider connector-x-legacy as a subtest.
>> +
>> + igt_subtest("atomic") {
>> + igt_require(data.display.is_atomic);
>> + test_content_protection(&data.display, COMMIT_ATOMIC);
As discussed above, we need to consider connector-x-atomic as a subtest.
-Ram
>> + }
>> +
>> + igt_fixture
>> + igt_display_fini(&data.display);
>> +}
>> diff --git a/tests/meson.build b/tests/meson.build
>> index 59ccd9a6..b12c35c0 100644
>> --- a/tests/meson.build
>> +++ b/tests/meson.build
>> @@ -157,6 +157,7 @@ test_progs = [
>> 'kms_chv_cursor_fail',
>> 'kms_color',
>> 'kms_concurrent',
>> + 'kms_content_protection',
>> 'kms_crtc_background_color',
>> 'kms_cursor_crc',
>> 'kms_cursor_legacy',
>
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