From ad65ed643b865734347d17ed44d37b59c9a3acd8 Mon Sep 17 00:00:00 2001
From: Mel Henning <mhenning@darkrefraction.com>
Date: Mon, 30 Mar 2026 15:34:44 -0400
Subject: [PATCH] nvk: SET_ROOT_TABLE_PREFETCH

Reviewed-by: Mary Guillemard <mary@mary.zone>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/40639>
---
 src/nouveau/vulkan/nvk_cmd_draw.c | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/src/nouveau/vulkan/nvk_cmd_draw.c b/src/nouveau/vulkan/nvk_cmd_draw.c
index 76b57c3f006..f145ff2a94c 100644
--- a/src/nouveau/vulkan/nvk_cmd_draw.c
+++ b/src/nouveau/vulkan/nvk_cmd_draw.c
@@ -30,6 +30,7 @@
 #include "nv_push_clc197.h"
 #include "nv_push_clc397.h"
 #include "nv_push_clc597.h"
+#include "nv_push_clc797.h"
 #include "nv_push_clcb97.h"
 #include "nv_push_clcd97.h"
 #include "clc7c0.h"
@@ -533,6 +534,9 @@ nvk_push_draw_state_init(struct nvk_queue *queue, struct nv_push *p)
       }
    }
 
+   if (pdev->info.cls_eng3d >= AMPERE_B)
+      P_IMMD(p, NVC797, SET_ROOT_TABLE_PREFETCH, 0x3f);
+
    if (pdev->info.cls_eng3d >= TURING_A) {
       /* I don't know what these values actually mean.  I just copied them
        * from the way the blob sets up the hardware.