This brings NPU2 in a safe mode when it does not throw HMI if GPU
coherent memory is gone.
Signed-off-by: Alexey Kardashevskiy <a...@ozlabs.ru>
---
The main aim for this is nvlink2 pass through, helps a lot.
---
arch/powerpc/platforms/powernv/pci-ioda.c | 11 +++++++++++
1 file changed, 11 insertions(+)
diff --git a/arch/powerpc/platforms/powernv/pci-ioda.c
b/arch/powerpc/platforms/powernv/pci-ioda.c
index 66c2804..29f798c 100644
--- a/arch/powerpc/platforms/powernv/pci-ioda.c
+++ b/arch/powerpc/platforms/powernv/pci-ioda.c
@@ -3797,6 +3797,16 @@ static void pnv_pci_release_device(struct pci_dev *pdev)
pnv_ioda_release_pe(pe);
}
+void pnv_npu_disable_device(struct pci_dev *pdev)
+{
+ struct eeh_dev *edev = pci_dev_to_eeh_dev(pdev);
+ struct eeh_pe *eehpe = edev ? edev->pe : NULL;
+
+ if (eehpe && eeh_ops && eeh_ops->reset) {
+ eeh_ops->reset(eehpe, EEH_RESET_HOT);
+ }
+}
+
static void pnv_pci_ioda_shutdown(struct pci_controller *hose)
{
struct pnv_phb *phb = hose->private_data;
@@ -3841,6 +3851,7 @@ static const struct pci_controller_ops
pnv_npu_ioda_controller_ops = {
.reset_secondary_bus = pnv_pci_reset_secondary_bus,
.dma_set_mask = pnv_npu_dma_set_mask,
.shutdown = pnv_pci_ioda_shutdown,
+ .disable_device = pnv_npu_disable_device,
};
static const struct pci_controller_ops pnv_npu_ocapi_ioda_controller_ops = {
--
2.11.0
