[PATCH i-g-t 1/2] tests/intel/kms_fbt: Skip fbcpsr tests on Wa_14016291713

[Govindapillai, Vinod]

On Wed, 2024-03-27 at 07:47 +0200, Jouni Högander wrote:
> Wa_1401629171 is disabling FBC if PSR is enabled. Check this from FBC
> debugfs interface and skip current test if FBC is disabled due to
> Wa_14016291713.
> 
> Closes: https://gitlab.freedesktop.org/drm/intel/-/issues/9525
> Signed-off-by: Jouni Högander <jouni.hogander at intel.com>
> ---
>  tests/intel/kms_frontbuffer_tracking.c | 9 +++++++++
>  1 file changed, 9 insertions(+)

Reviewed-by: Vinod Govindapillai <vinod.govindapillai at intel.com>

> 
> diff --git a/tests/intel/kms_frontbuffer_tracking.c b/tests/intel/kms_frontbuffer_tracking.c
> index db2db0ff1..6d5395a0c 100644
> --- a/tests/intel/kms_frontbuffer_tracking.c
> +++ b/tests/intel/kms_frontbuffer_tracking.c
> @@ -2025,6 +2025,14 @@ static bool fbc_mode_too_large(void)
>         return strstr(buf, "FBC disabled: mode too large for compression\n");
>  }
>  
> +static bool fbc_psr_not_possible(void)
> +{
> +       char buf[128];
> +
> +       debugfs_read_crtc("i915_fbc_status", buf);
> +       return strstr(buf, "FBC disabled: PSR1 enabled (Wa_14016291713)");
> +}
> +
>  static bool fbc_enable_per_plane(int plane_index, enum pipe pipe)
>  {
>         char buf[PATH_MAX];
> @@ -2699,6 +2707,7 @@ static void do_status_assertions(int flags)
>                 igt_require(!fbc_not_enough_stolen());
>                 igt_require(!fbc_stride_not_supported());
>                 igt_require(!fbc_mode_too_large());
> +               igt_require(!fbc_psr_not_possible());
>                 if (!intel_fbc_wait_until_enabled(drm.fd, prim_mode_params.pipe)) {
>                         igt_assert_f(intel_fbc_is_enabled(drm.fd,
>                                                     prim_mode_params.pipe,