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authorAlex Deucher <alexander.deucher@amd.com>2017-12-19 09:52:31 -0500
committerGreg Kroah-Hartman <gregkh@linuxfoundation.org>2018-02-28 10:19:44 +0100
commit30537deb089c4a695d27e6a39c914b6418a5cfc6 (patch)
tree8e6124d6c796b6fc05fd51c9223b256a8a2914e0
parent46c1e4023b58a910cea8797cb1c2bd9b784a835c (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.c21
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 9ff69b90df36..4968b6bb9466 100644
--- a/drivers/gpu/drm/amd/amdgpu/vi.c
+++ b/drivers/gpu/drm/amd/amdgpu/vi.c
@@ -448,14 +448,19 @@ 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 */