[Mesa-dev] [PATCH] intel: limit urb size for SKL/KBL/CFL GT1

[Kristian Høgsberg]

What happened to this patch? We carry it downstream for the deqp fix.
Can we get it into 19.0?

Thanks,
Kristian

On Wed, Aug 29, 2018 at 5:39 PM Lionel Landwerlin
<lionel.g.landwerlin at intel.com> wrote:
>
> The documentation puts the URB size for SKL GT1 as "128K - 192K". I
> guess this means we can't tell which one it is, so we have to go for
> the lower bound. This change also changes the max VS URB entries which
> is lower on GT1 skus.
>
> Fixes a CTS test :
>
>   dEQP-GLES31.functional.geometry_shading.layered.render_with_default_layer_3d
>
> Signed-off-by: Lionel Landwerlin <lionel.g.landwerlin at intel.com>
> Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=107505
> ---
>  src/intel/dev/gen_device_info.c | 7 ++++++-
>  1 file changed, 6 insertions(+), 1 deletion(-)
>
> diff --git a/src/intel/dev/gen_device_info.c b/src/intel/dev/gen_device_info.c
> index b0ae4d18034..ed1e73efa61 100644
> --- a/src/intel/dev/gen_device_info.c
> +++ b/src/intel/dev/gen_device_info.c
> @@ -617,7 +617,8 @@ static const struct gen_device_info gen_device_info_skl_gt1 = {
>     .num_subslices = { 2, },
>     .num_eu_per_subslice = 6,
>     .l3_banks = 2,
> -   .urb.size = 192,
> +   .urb.size = 128,
> +   .urb.max_entries[MESA_SHADER_VERTEX] = 928,
>     .simulator_id = 12,
>  };
>
> @@ -689,6 +690,8 @@ static const struct gen_device_info gen_device_info_kbl_gt1 = {
>     .num_subslices = { 2, },
>     .num_eu_per_subslice = 6,
>     .l3_banks = 2,
> +   .urb.size = 128,
> +   .urb.max_entries[MESA_SHADER_VERTEX] = 928,
>     .simulator_id = 16,
>  };
>
> @@ -775,6 +778,8 @@ static const struct gen_device_info gen_device_info_cfl_gt1 = {
>     .num_subslices = { 2, },
>     .num_eu_per_subslice = 6,
>     .l3_banks = 2,
> +   .urb.size = 128,
> +   .urb.max_entries[MESA_SHADER_VERTEX] = 928,
>     .simulator_id = 24,
>  };
>  static const struct gen_device_info gen_device_info_cfl_gt2 = {
> --
> 2.18.0
>
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