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drm/amdgpu: Unset baco dummy mode on nbio v7.9

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BACO dummy mode could be set under reset conditions and that affects
framebuffer access. Check If baco dummy mode is set, unset it if so.

Signed-off-by: Lijo Lazar <lijo.lazar@amd.com>
Signed-off-by: Le Ma <le.ma@amd.com>
Reviewed-by: Hawking Zhang <Hawking.Zhang@amd.com>
Reviewed-by: Asad Kamal <asad.kamal@amd.com>
Tested-by: Asad Kamal <asad.kamal@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
This commit is contained in:
Lijo Lazar 2023-07-14 17:02:45 +05:30 committed by Alex Deucher
parent ed6445f589
commit 8f1778939b
1 changed files with 18 additions and 0 deletions
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18
drivers/gpu/drm/amd/amdgpu/nbio_v7_9.c
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@ -437,6 +437,24 @@ static void nbio_v7_9_init_registers(struct amdgpu_device *adev)
XCC_DOORBELL_FENCE__SHUB_SLV_MODE_MASK);
}
if (!amdgpu_sriov_vf(adev)) {
u32 baco_cntl;
for_each_inst(i, adev->aid_mask) {
baco_cntl = RREG32_SOC15(NBIO, i, regBIF_BX0_BACO_CNTL);
if (baco_cntl & (BIF_BX0_BACO_CNTL__BACO_DUMMY_EN_MASK |
BIF_BX0_BACO_CNTL__BACO_EN_MASK)) {
baco_cntl &= ~(
BIF_BX0_BACO_CNTL__BACO_DUMMY_EN_MASK |
BIF_BX0_BACO_CNTL__BACO_EN_MASK);
dev_dbg(adev->dev,
"Unsetting baco dummy mode %x",
baco_cntl);
WREG32_SOC15(NBIO, i, regBIF_BX0_BACO_CNTL,
baco_cntl);
}
}
}
}
static u64 nbio_v7_9_get_pcie_replay_count(struct amdgpu_device *adev)