From: Shaoyun Liu <Shaoyun.Liu@amd.com>
Date: Wed, 5 Jul 2017 10:56:14 -0400
Subject: drm/amdgpu: NO KIQ usage on nbio hdp flush routine
Git-commit: 57ea8c7b4d831caac27631329507baf2fbe094ae
Patch-mainline: v4.14-rc1
References: FATE#326289 FATE#326079 FATE#326049 FATE#322398 FATE#326166

nbio hdp flush routine are called within atomic context.
Avoid use KIQ when write to the HDP_MEM_COHERENCY_FLUSH_CNTL register
since this register has its own VF copy

Signed-off-by: Shaoyun Liu <Shaoyun.Liu@amd.com>
Reviewed-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Acked-by: Petr Tesarik <ptesarik@suse.com>
---
 drivers/gpu/drm/amd/amdgpu/nbio_v6_1.c |    2 +-
 drivers/gpu/drm/amd/amdgpu/nbio_v7_0.c |    2 +-
 2 files changed, 2 insertions(+), 2 deletions(-)

--- a/drivers/gpu/drm/amd/amdgpu/nbio_v6_1.c
+++ b/drivers/gpu/drm/amd/amdgpu/nbio_v6_1.c
@@ -67,7 +67,7 @@ void nbio_v6_1_mc_access_enable(struct a
 
 void nbio_v6_1_hdp_flush(struct amdgpu_device *adev)
 {
-	WREG32_SOC15(NBIO, 0, mmBIF_BX_PF0_HDP_MEM_COHERENCY_FLUSH_CNTL, 0);
+	WREG32_SOC15_NO_KIQ(NBIO, 0, mmBIF_BX_PF0_HDP_MEM_COHERENCY_FLUSH_CNTL, 0);
 }
 
 u32 nbio_v6_1_get_memsize(struct amdgpu_device *adev)
--- a/drivers/gpu/drm/amd/amdgpu/nbio_v7_0.c
+++ b/drivers/gpu/drm/amd/amdgpu/nbio_v7_0.c
@@ -65,7 +65,7 @@ void nbio_v7_0_mc_access_enable(struct a
 
 void nbio_v7_0_hdp_flush(struct amdgpu_device *adev)
 {
-	WREG32_SOC15(NBIO, 0, mmHDP_MEM_COHERENCY_FLUSH_CNTL, 0);
+	WREG32_SOC15_NO_KIQ(NBIO, 0, mmHDP_MEM_COHERENCY_FLUSH_CNTL, 0);
 }
 
 u32 nbio_v7_0_get_memsize(struct amdgpu_device *adev)