diff options
| author | Alex Deucher <alexander.deucher@amd.com> | 2017-12-19 09:52:31 -0500 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2018-02-28 10:21:38 +0100 |
| commit | 2511a10a9dbda9f997ba05b2e7db720bc07844d5 (patch) | |
| tree | 6a492cb511e726b00802cd7164eb32c315ddce39 | |
| parent | 569773e885c249d9f51eb56e772d832f95690bd1 (diff) | |
drm/amdgpu: only check mmBIF_IOV_FUNC_IDENTIFIER on tonga/fiji
commit 57ad33a307bf85cafda3a77c03a555c9f9ee4139 upstream.
We only support SR-IOV on tonga/fiji. Don't check this register
on other VI parts.
Fixes: 048765ad5af7c89 (amdgpu: fix asic initialization for virtualized environments (v2))
Reviewed-by: Xiangliang Yu <Xiangliang.Yu@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Cc: stable@vger.kernel.org
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
| -rw-r--r-- | drivers/gpu/drm/amd/amdgpu/vi.c | 21 |
1 files changed, 13 insertions, 8 deletions
diff --git a/drivers/gpu/drm/amd/amdgpu/vi.c b/drivers/gpu/drm/amd/amdgpu/vi.c index 3a4c2fa7e36d..d582964702ad 100644 --- a/drivers/gpu/drm/amd/amdgpu/vi.c +++ b/drivers/gpu/drm/amd/amdgpu/vi.c @@ -449,14 +449,19 @@ static bool vi_read_bios_from_rom(struct amdgpu_device *adev, static void vi_detect_hw_virtualization(struct amdgpu_device *adev) { - uint32_t reg = RREG32(mmBIF_IOV_FUNC_IDENTIFIER); - /* bit0: 0 means pf and 1 means vf */ - /* bit31: 0 means disable IOV and 1 means enable */ - if (reg & 1) - adev->virt.caps |= AMDGPU_SRIOV_CAPS_IS_VF; - - if (reg & 0x80000000) - adev->virt.caps |= AMDGPU_SRIOV_CAPS_ENABLE_IOV; + uint32_t reg = 0; + + if (adev->asic_type == CHIP_TONGA || + adev->asic_type == CHIP_FIJI) { + reg = RREG32(mmBIF_IOV_FUNC_IDENTIFIER); + /* bit0: 0 means pf and 1 means vf */ + /* bit31: 0 means disable IOV and 1 means enable */ + if (reg & 1) + adev->virt.caps |= AMDGPU_SRIOV_CAPS_IS_VF; + + if (reg & 0x80000000) + adev->virt.caps |= AMDGPU_SRIOV_CAPS_ENABLE_IOV; + } if (reg == 0) { if (is_virtual_machine()) /* passthrough mode exclus sr-iov mode */ |