[PATCH i-g-t 30/39] tests/vkms_configfs: Test enabling a device with too many encoders

[Louis Chauvet]

Le 18/02/2025 à 17:50, José Expósito a écrit :
> Try to enable a VKMS device with too many encoders and test that it
> fails.
> 
> Signed-off-by: José Expósito <jose.exposito89 at gmail.com>

Reviewed-by: Louis Chauvet <louis.chauvet at boolin.com>

> ---
>   tests/vkms/vkms_configfs.c | 51 ++++++++++++++++++++++++++++++++++++++
>   1 file changed, 51 insertions(+)
> 
> diff --git a/tests/vkms/vkms_configfs.c b/tests/vkms/vkms_configfs.c
> index ffbc3b133..8f1f46f90 100644
> --- a/tests/vkms/vkms_configfs.c
> +++ b/tests/vkms/vkms_configfs.c
> @@ -1185,6 +1185,56 @@ static void test_enable_no_encoders(void)
>   	igt_vkms_device_destroy(dev);
>   }
>   
> +/**
> + * SUBTEST: enable-too-many-encoders
> + * Description: Try to enable a VKMS device with too many encoders and test that
> + *              it fails.
> + */
> +
> +static void test_enable_too_many_encoders(void)
> +{
> +	igt_vkms_t *dev;
> +	char encoder_names[VKMS_MAX_PIPELINE_ITEMS][10];
> +
> +	igt_vkms_config_t cfg = {
> +		.device_name = __func__,
> +		.planes = {
> +			{
> +				.name = "plane0",
> +				.type = DRM_PLANE_TYPE_PRIMARY,
> +				.possible_crtcs = { "crtc0" },
> +			},
> +		},
> +		.crtcs = {
> +			{ .name = "crtc0" },
> +		},
> +		.encoders = {},
> +		.connectors = {
> +			{
> +				.name = "connector0",
> +				.possible_encoders = { "encoder0" },
> +			},
> +		},
> +	};
> +
> +	for (int n = 0; n < 32; n++) {
> +		snprintf(encoder_names[n], sizeof(encoder_names[n]), "encoder%d", n);
> +		cfg.encoders[n] = (igt_vkms_encoder_config_t){
> +			.name = encoder_names[n],
> +			.possible_crtcs = { "crtc0" }
> +		};
> +	}
> +
> +	dev = igt_vkms_device_create_from_config(&cfg);
> +	igt_assert(dev);
> +
> +	igt_vkms_device_set_enabled(dev, true);
> +	igt_assert(!igt_vkms_device_is_enabled(dev));
> +	igt_assert(!device_exists(__func__));
> +
> +	igt_vkms_device_destroy(dev);
> +}
> +
>   igt_main
>   {
>   	struct {
> @@ -1217,6 +1267,7 @@ igt_main
>   		{ "enable-no-crtcs", test_enable_no_crtcs },
>   		{ "enable-too-many-crtcs", test_enable_too_many_crtcs },
>   		{ "enable-no-encoders", test_enable_no_encoders },
> +		{ "enable-too-many-encoders", test_enable_too_many_encoders },
>   	};
>   
>   	igt_fixture {

-- 
Louis Chauvet, Bootlin
Embedded Linux and Kernel engineering
https://bootlin.com