From 50a312ef240ccb7d7b93aa3f655f382ea05b1994 Mon Sep 17 00:00:00 2001
From: Dave Airlie <airlied@redhat.com>
Date: Tue, 15 Apr 2025 07:07:40 +1000
Subject: [PATCH] nvk: Add hopper shared memory window alignment

This changes to need 4GB alignment on hopper and later.

Reviewed-by: Mel Henning <mhenning@darkrefraction.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/35484>
---
 src/nouveau/vulkan/nvk_cmd_dispatch.c | 9 ++++++++-
 1 file changed, 8 insertions(+), 1 deletion(-)

diff --git a/src/nouveau/vulkan/nvk_cmd_dispatch.c b/src/nouveau/vulkan/nvk_cmd_dispatch.c
index 45150e779c3..e69417c435a 100644
--- a/src/nouveau/vulkan/nvk_cmd_dispatch.c
+++ b/src/nouveau/vulkan/nvk_cmd_dispatch.c
@@ -60,7 +60,14 @@ nvk_push_dispatch_state_init(struct nvk_queue *queue, struct nv_push *p)
        *
        * Really?!?  TODO: Fix this for realz.
        */
-      uint64_t temp = 0xfeULL << 24;
+      uint64_t temp;
+
+      /* shared memory window needs 4GB alignment on hopper+ */
+      if (pdev->info.cls_compute >= HOPPER_COMPUTE_A)
+         temp = 1ULL << 32;
+      else
+         temp = 0xfeULL << 24;
+
       P_MTHD(p, NVC3C0, SET_SHADER_SHARED_MEMORY_WINDOW_A);
       P_NVC3C0_SET_SHADER_SHARED_MEMORY_WINDOW_A(p, temp >> 32);
       P_NVC3C0_SET_SHADER_SHARED_MEMORY_WINDOW_B(p, temp & 0xffffffff);