When the power is lost due to ACPI power resources being turned off, the
driver should reset the GPU so it can work anew.
First, _PR3 support of the hierarchy needs to be found correctly. Since
the GPU on some discrete GFX cards is behind a PCIe switch, checking the
_PR3 on downstream port alone is not enough, as the _PR3 can associate
to the root port above the PCIe switch.
Once the _PR3 is found and BOCO support is correctly marked, use that
information to inform the GPU should be reset. This solves an issue that
system freeze on a Intel ADL desktop that uses S0ix for sleep and D3cold
is supported for the GFX slot.
Fixes: 0064b0ce85bb ("drm/amd/pm: enable ASPM by default")
Link: https://gitlab.freedesktop.org/drm/amd/-/issues/1885
Link: https://gitlab.freedesktop.org/drm/amd/-/issues/2458
Signed-off-by: Kai-Heng Feng <kai.heng.feng@xxxxxxxxxxxxx>
---
drivers/gpu/drm/amd/amdgpu/amdgpu_acpi.c | 3 +++
drivers/gpu/drm/amd/amdgpu/amdgpu_device.c | 7 ++++++-
drivers/gpu/drm/amd/amdgpu/amdgpu_drv.c | 12 +++++-------
3 files changed, 14 insertions(+), 8 deletions(-)
diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_acpi.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_acpi.c
index 60b1857f469e..407456ac0e84 100644
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_acpi.c
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_acpi.c
@@ -987,6 +987,9 @@ bool amdgpu_acpi_should_gpu_reset(struct amdgpu_device *adev)
if (amdgpu_sriov_vf(adev))
return false;
+ if (amdgpu_device_supports_boco(adev_to_drm(adev)))
+ return true;
+
#if IS_ENABLED(CONFIG_SUSPEND)
return pm_suspend_target_state != PM_SUSPEND_TO_IDLE;
#else
diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_device.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_device.c
index f5658359ff5c..d56b7a2bafa6 100644
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_device.c
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_device.c
@@ -2181,7 +2181,12 @@ static int amdgpu_device_ip_early_init(struct amdgpu_device *adev)
if (!(adev->flags & AMD_IS_APU)) {
parent = pci_upstream_bridge(adev->pdev);
- adev->has_pr3 = parent ? pci_pr3_present(parent) : false;
+ do {
+ if (pci_pr3_present(parent)) {
+ adev->has_pr3 = true;
+ break;
+ }
+ } while ((parent = pci_upstream_bridge(parent)));
}
amdgpu_amdkfd_device_probe(adev);
diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_drv.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_drv.c
index ba5def374368..5d81fcac4b0a 100644
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_drv.c
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_drv.c
@@ -2415,10 +2415,11 @@ static int amdgpu_pmops_suspend(struct device *dev)
struct drm_device *drm_dev = dev_get_drvdata(dev);
struct amdgpu_device *adev = drm_to_adev(drm_dev);
- if (amdgpu_acpi_is_s0ix_active(adev))
- adev->in_s0ix = true;
- else if (amdgpu_acpi_is_s3_active(adev))
+ if (amdgpu_acpi_is_s3_active(adev) ||
+ amdgpu_device_supports_boco(drm_dev))
adev->in_s3 = true;
+ else if (amdgpu_acpi_is_s0ix_active(adev))
+ adev->in_s0ix = true;
if (!adev->in_s0ix && !adev->in_s3)
return 0;
return amdgpu_device_suspend(drm_dev, true);
@@ -2449,10 +2450,7 @@ static int amdgpu_pmops_resume(struct device *dev)
adev->no_hw_access = true;
r = amdgpu_device_resume(drm_dev, true);
- if (amdgpu_acpi_is_s0ix_active(adev))
- adev->in_s0ix = false;
- else
- adev->in_s3 = false;
+ adev->in_s0ix = adev->in_s3 = false;
return r;
}
--
2.34.1
