Attachment 141352 Details for Bug 107505 – intel: limit urb size for SKL GT1

[patch] intel: limit urb size for SKL GT1

0001-intel-limit-urb-size-for-SKL-GT1.patch (text/plain), 1.57 KB, created by Lionel Landwerlin on 2018-08-29 16:45:52 UTC

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Creator: Lionel Landwerlin

Created: 2018-08-29 16:45:52 UTC

Size: 1.57 KB

patch

obsolete

>From ec87f72deced2476571af7078c08e906ce54b885 Mon Sep 17 00:00:00 2001
>From: Lionel Landwerlin <lionel.g.landwerlin@intel.com>
>Date: Wed, 29 Aug 2018 17:06:36 +0100
>Subject: [PATCH] intel: limit urb size for SKL GT1
>
>The documentation puts the URB size for SKL GT1 as "128-192K". I guess
>this means we can't guess which one it is, so we have to go for the
>lower bound. This change reuses values from Gen9LP (since it has the
>same 128K URB size). I'm not completely sure this is correct at least
>it fixes a CTS test :
>
>  dEQP-GLES31.functional.geometry_shading.layered.render_with_default_layer_3d
>
>Signed-off-by: Lionel Landwerlin <lionel.g.landwerlin@intel.com>
>Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=107505
>---
> src/intel/dev/gen_device_info.c | 14 +++++++++++++-
> 1 file changed, 13 insertions(+), 1 deletion(-)
>
>diff --git a/src/intel/dev/gen_device_info.c b/src/intel/dev/gen_device_info.c
>index b0ae4d18034..22237e51470 100644
>--- a/src/intel/dev/gen_device_info.c
>+++ b/src/intel/dev/gen_device_info.c
>@@ -617,7 +617,19 @@ 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,
>+      .min_entries = {
>+         [MESA_SHADER_VERTEX]    = 34,
>+         [MESA_SHADER_TESS_EVAL] = 34,
>+      },
>+      .max_entries = {
>+         [MESA_SHADER_VERTEX]    = 352,
>+         [MESA_SHADER_TESS_CTRL] = 128,
>+         [MESA_SHADER_TESS_EVAL] = 208,
>+         [MESA_SHADER_GEOMETRY]  = 128,
>+      },
>+   },
>    .simulator_id = 12,
> };
> 
>-- 
>2.18.0
>

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