From 4c5aa594928f97593502a66d5a9075f5f5dd064b Mon Sep 17 00:00:00 2001
From: Aaron Liu <aaron.liu@amd.com>
Date: Mon, 25 Jul 2022 08:45:56 +0800
Subject: [PATCH] drm/amdgpu: enable swiotlb for gmc 11.0

Enable swiotlb for gmc 11.0.

Signed-off-by: Aaron Liu <aaron.liu@amd.com>
Reviewed-by: Huang Rui <ray.huang@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
---
 drivers/gpu/drm/amd/amdgpu/gmc_v11_0.c | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/drivers/gpu/drm/amd/amdgpu/gmc_v11_0.c b/drivers/gpu/drm/amd/amdgpu/gmc_v11_0.c
index 503e40a..1471bfb 100644
--- a/drivers/gpu/drm/amd/amdgpu/gmc_v11_0.c
+++ b/drivers/gpu/drm/amd/amdgpu/gmc_v11_0.c
@@ -22,6 +22,9 @@
  */
 #include <linux/firmware.h>
 #include <linux/pci.h>
+
+#include <drm/drm_cache.h>
+
 #include "amdgpu.h"
 #include "amdgpu_atomfirmware.h"
 #include "gmc_v11_0.h"
@@ -775,6 +778,8 @@ static int gmc_v11_0_sw_init(void *handle)
 		return r;
 	}
 
+	adev->need_swiotlb = drm_need_swiotlb(44);
+
 	r = gmc_v11_0_mc_init(adev);
 	if (r)
 		return r;
-- 
2.7.4