[igt-dev] [PATCH 2/2] tests/kms_frontbuffer_tracking: Ignore FBC errors due mode is too large

[Lofstedt, Marta]

Reviewed-by: Marta Lofstedt <marta.lofstedt at intel.com>

> -----Original Message-----
> From: igt-dev [mailto:igt-dev-bounces at lists.freedesktop.org] On Behalf Of
> José Roberto de Souza
> Sent: Wednesday, April 4, 2018 11:26 PM
> To: igt-dev at lists.freedesktop.org
> Subject: [igt-dev] [PATCH 2/2] tests/kms_frontbuffer_tracking: Ignore FBC
> errors due mode is too large
> 
> Depending on the default mode size, some tests will fail because it will
> exceed the maximum size that hardware tracking can handle, mostly
> because hardware tracking do not take in care the X and Y offsets, so the
> plane size + offsets needs be smaller or equal to hardware tracking limmits.
> 
> Signed-off-by: José Roberto de Souza <jose.souza at intel.com>
> Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=105680
> ---
>  tests/kms_frontbuffer_tracking.c | 9 +++++++++
>  1 file changed, 9 insertions(+)
> 
> diff --git a/tests/kms_frontbuffer_tracking.c
> b/tests/kms_frontbuffer_tracking.c
> index a20e7118..71e985a5 100644
> --- a/tests/kms_frontbuffer_tracking.c
> +++ b/tests/kms_frontbuffer_tracking.c
> @@ -954,6 +954,14 @@ static bool fbc_stride_not_supported(void)
>  	return strstr(buf, "FBC disabled: framebuffer stride not
> supported\n");  }
> 
> +static bool fbc_mode_too_large(void)
> +{
> +	char buf[128];
> +
> +	debugfs_read("i915_fbc_status", buf);
> +	return strstr(buf, "FBC disabled: mode too large for
> compression\n");
> +}
> +
>  static bool fbc_wait_until_enabled(void)  {
>  	last_fbc_buf[0] = '\0';
> @@ -1742,6 +1750,7 @@ static void do_status_assertions(int flags)
>  	if (flags & ASSERT_FBC_ENABLED) {
>  		igt_require(!fbc_not_enough_stolen());
>  		igt_require(!fbc_stride_not_supported());
> +		igt_require(!fbc_mode_too_large());
>  		if (!fbc_wait_until_enabled()) {
> 
> 	igt_assert_f(fbc_is_enabled(IGT_LOG_WARN),
>  				     "FBC
> disabled\n");
> --
> 2.16.3
> 
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