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drm/amdgpu: PCI I/O bar can be disabled 

PCI I/O bar can be disabled in VBIOS to save the resource. It is often
disabled in large aperture VBIOS. Don't call it an error.

Signed-off-by: Amber Lin <Amber.Lin@amd.com>
Acked-by: Christian König <christian.koenig@amd.com>
Reviewed-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
This commit is contained in:
Amber Lin 2017-01-04 08:06:58 -05:00 committed by Alex Deucher
parent a5b580e119
commit b64a18c502
1 changed files with 2 additions and 2 deletions
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4
drivers/gpu/drm/amd/amdgpu/amdgpu_device.c
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@ -885,7 +885,7 @@ static int amdgpu_atombios_init(struct amdgpu_device *adev)
atom_card_info->ioreg_read = cail_ioreg_read;
atom_card_info->ioreg_write = cail_ioreg_write;
} else {
DRM_ERROR("Unable to find PCI I/O BAR; using MMIO for ATOM IIO\n");
DRM_INFO("PCI I/O BAR is not found. Using MMIO to access ATOM BIOS\n");
atom_card_info->ioreg_read = cail_reg_read;
atom_card_info->ioreg_write = cail_reg_write;
}
@ -1694,7 +1694,7 @@ int amdgpu_device_init(struct amdgpu_device *adev,
}
}
if (adev->rio_mem == NULL)
DRM_ERROR("Unable to find PCI I/O BAR\n");
DRM_INFO("PCI I/O BAR is not found.\n");
/* early init functions */
r = amdgpu_early_init(adev);