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From d7ec7d30389e8dedec253682bcac65fdd5900ba2 Mon Sep 17 00:00:00 2001
From: Le Ma <le.ma@amd.com>
Date: Tue, 11 Sep 2018 13:11:28 +0800
Subject: [PATCH 2914/2940] drm/amdgpu: skip pasid mapping for second mmhub on
Arcturus
There's no LUT register for second mmhub to convert pasid since it has no ATC.
Signed-off-by: Le Ma <le.ma@amd.com>
Reviewed-by: Feifei Xu <Feifei.Xu@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
---
drivers/gpu/drm/amd/amdgpu/gmc_v9_0.c | 4 ++++
1 file changed, 4 insertions(+)
diff --git a/drivers/gpu/drm/amd/amdgpu/gmc_v9_0.c b/drivers/gpu/drm/amd/amdgpu/gmc_v9_0.c
index ebc95c743733..6ff53046fddd 100644
--- a/drivers/gpu/drm/amd/amdgpu/gmc_v9_0.c
+++ b/drivers/gpu/drm/amd/amdgpu/gmc_v9_0.c
@@ -485,6 +485,10 @@ static void gmc_v9_0_emit_pasid_mapping(struct amdgpu_ring *ring, unsigned vmid,
struct amdgpu_device *adev = ring->adev;
uint32_t reg;
+ /* Do nothing because there's no lut register for mmhub1. */
+ if (ring->funcs->vmhub == AMDGPU_MMHUB_1)
+ return;
+
if (ring->funcs->vmhub == AMDGPU_GFXHUB_0)
reg = SOC15_REG_OFFSET(OSSSYS, 0, mmIH_VMID_0_LUT) + vmid;
else
--
2.17.1
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