From 5250128c6a48211d71e17eb90fb827815371c40b Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Marek=20Ol=C5=A1=C3=A1k?= <marek.olsak@amd.com>
Date: Thu, 22 Aug 2024 06:49:39 -0400
Subject: [PATCH] ac: fix WAVES_PER_SH value for gfx12

not a serious issue because we only use it for PRIME without SDMA IIRC

Acked-by: Pierre-Eric Pelloux-Prayer <pierre-eric.pelloux-prayer@amd.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/30869>
---
 src/amd/common/ac_gpu_info.c | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/src/amd/common/ac_gpu_info.c b/src/amd/common/ac_gpu_info.c
index 833d4ed9f4f..bd417de62a2 100644
--- a/src/amd/common/ac_gpu_info.c
+++ b/src/amd/common/ac_gpu_info.c
@@ -2342,6 +2342,10 @@ ac_get_compute_resource_limits(const struct radeon_info *info, unsigned waves_pe
                             info->max_waves_per_simd;
       }
 
+      /* On GFX12+, WAVES_PER_SH means waves per SE. */
+      if (info->gfx_level >= GFX12)
+         max_waves_per_sh *= info->max_sa_per_se;
+
       /* Force even distribution on all SIMDs in CU if the workgroup
        * size is 64. This has shown some good improvements if # of CUs
        * per SE is not a multiple of 4.