From: Victor Lu Date: Wed, 11 Oct 2023 20:27:59 +0000 (-0400) Subject: drm/amdgpu: Do not program PF-only regs in hdp_v4_0.c under SRIOV (v2) X-Git-Tag: v6.7-rc6-pxa1908~207^2^2~17 X-Git-Url: https://git.dujemihanovic.xyz/?a=commitdiff_plain;h=0b1695710ab8be263a5c19f17240c6a44b4b0a3e;p=linux.git drm/amdgpu: Do not program PF-only regs in hdp_v4_0.c under SRIOV (v2) The following regs can only be programmed by the PF: HDP_MISC_CNTL HDP_NONSURFACE_BASE HDP_NONSURFACE_BASE_HI v2: update commit message Signed-off-by: Victor Lu Reviewed-by: Samir Dhume Signed-off-by: Alex Deucher --- diff --git a/drivers/gpu/drm/amd/amdgpu/hdp_v4_0.c b/drivers/gpu/drm/amd/amdgpu/hdp_v4_0.c index 3f3a6445c006..49e934975719 100644 --- a/drivers/gpu/drm/amd/amdgpu/hdp_v4_0.c +++ b/drivers/gpu/drm/amd/amdgpu/hdp_v4_0.c @@ -145,6 +145,10 @@ static void hdp_v4_0_init_registers(struct amdgpu_device *adev) break; } + /* Do not program registers if VF */ + if (amdgpu_sriov_vf(adev)) + return; + WREG32_FIELD15(HDP, 0, HDP_MISC_CNTL, FLUSH_INVALIDATE_CACHE, 1); if (amdgpu_ip_version(adev, HDP_HWIP, 0) == IP_VERSION(4, 4, 0))