[PATCH 030/102] drm/amdgpu: skip pasid mapping for second mmhub on Arcturus
Alex Deucher
alexdeucher at gmail.com
Mon Jul 15 21:23:25 UTC 2019
From: Le Ma <le.ma at amd.com>
There's no LUT register for second mmhub to convert pasid since it has no ATC.
Signed-off-by: Le Ma <le.ma at amd.com>
Reviewed-by: Feifei Xu <Feifei.Xu at amd.com>
Signed-off-by: Alex Deucher <alexander.deucher at 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 d6aa290d567c..11968fbe0d60 100644
--- a/drivers/gpu/drm/amd/amdgpu/gmc_v9_0.c
+++ b/drivers/gpu/drm/amd/amdgpu/gmc_v9_0.c
@@ -488,6 +488,10 @@ 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
--
2.20.1
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