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| author |   Alex Deucher <alexander.deucher@amd.com> | 2018-12-19 18:05:41 -0500 |
|---|---|---|
| committer | Alex Deucher <alexander.deucher@amd.com> | 2018-12-20 12:12:17 -0500 |
| commit | e01f2d41895102d824c6b8f5e011dd5e286d5e8b (patch) | |
| tree | 20dad1ee49830e1a3d8ec30125340dee0f24588e /drivers/gpu | |
| parent | drm/amdgpu/nbio6.1: add hw bug workaround for vega10/12 (diff) | |
| download | linux-dev-e01f2d41895102d824c6b8f5e011dd5e286d5e8b.tar.xz linux-dev-e01f2d41895102d824c6b8f5e011dd5e286d5e8b.zip | |
drm/amdgpu/nbio7.4: add hw bug workaround for vega20
Configure PCIE_CI_CNTL to work around a hw bug that affects
some multi-GPU compute workloads.
Acked-by: Feifei Xu <Feifei.Xu@amd.com>
Reviewed-by: Harish Kasiviswanathan <Harish.Kasiviswanathan@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Diffstat (limited to 'drivers/gpu')
| -rw-r--r-- | drivers/gpu/drm/amd/amdgpu/nbio_v7_4.c | 7 |
1 files changed, 7 insertions, 0 deletions
diff --git a/drivers/gpu/drm/amd/amdgpu/nbio_v7_4.c b/drivers/gpu/drm/amd/amdgpu/nbio_v7_4.c index f8cee95d61cc..4cd31a276dcd 100644 --- a/drivers/gpu/drm/amd/amdgpu/nbio_v7_4.c +++ b/drivers/gpu/drm/amd/amdgpu/nbio_v7_4.c @@ -31,6 +31,7 @@ #define smnCPM_CONTROL 0x11180460 #define smnPCIE_CNTL2 0x11180070 +#define smnPCIE_CI_CNTL 0x11180080 static u32 nbio_v7_4_get_rev_id(struct amdgpu_device *adev) { @@ -222,7 +223,13 @@ static void nbio_v7_4_detect_hw_virt(struct amdgpu_device *adev) static void nbio_v7_4_init_registers(struct amdgpu_device *adev) { + uint32_t def, data; + + def = data = RREG32_PCIE(smnPCIE_CI_CNTL); + data = REG_SET_FIELD(data, PCIE_CI_CNTL, CI_SLV_ORDERING_DIS, 1); + if (def != data) + WREG32_PCIE(smnPCIE_CI_CNTL, data); } const struct amdgpu_nbio_funcs nbio_v7_4_funcs = { |