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drm/amdgpu/si: add PCI reset support

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Use generic PCI reset for GPU reset if the user specifies
PCI reset as the reset mechanism.  This should in general
only be used for validation.

Acked-by: Evan Quan <evan.quan@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
This commit is contained in:
Alex Deucher 2021-02-04 11:13:53 -05:00
parent af484df800
commit ffbfd081b4
1 changed files with 23 additions and 14 deletions
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37
drivers/gpu/drm/amd/amdgpu/si.c
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@ -1299,17 +1299,6 @@ static int si_gpu_pci_config_reset(struct amdgpu_device *adev)
return r;
}
static int si_asic_reset(struct amdgpu_device *adev)
{
int r;
dev_info(adev->dev, "PCI CONFIG reset\n");
r = si_gpu_pci_config_reset(adev);
return r;
}
static bool si_asic_supports_baco(struct amdgpu_device *adev)
{
return false;
@ -1318,14 +1307,34 @@ static bool si_asic_supports_baco(struct amdgpu_device *adev)
static enum amd_reset_method
si_asic_reset_method(struct amdgpu_device *adev)
{
if (amdgpu_reset_method != AMD_RESET_METHOD_LEGACY &&
amdgpu_reset_method != -1)
if (amdgpu_reset_method == AMD_RESET_METHOD_PCI)
return amdgpu_reset_method;
else if (amdgpu_reset_method != AMD_RESET_METHOD_LEGACY &&
amdgpu_reset_method != -1)
dev_warn(adev->dev, "Specified reset method:%d isn't supported, using AUTO instead.\n",
amdgpu_reset_method);
amdgpu_reset_method);
return AMD_RESET_METHOD_LEGACY;
}
static int si_asic_reset(struct amdgpu_device *adev)
{
int r;
switch (si_asic_reset_method(adev)) {
case AMD_RESET_METHOD_PCI:
dev_info(adev->dev, "PCI reset\n");
r = amdgpu_device_pci_reset(adev);
break;
default:
dev_info(adev->dev, "PCI CONFIG reset\n");
r = si_gpu_pci_config_reset(adev);
break;
}
return r;
}
static u32 si_get_config_memsize(struct amdgpu_device *adev)
{
return RREG32(mmCONFIG_MEMSIZE);