On Thu, 7 Jun 2018 17:06:07 +1000
Alexey Kardashevskiy <a...@ozlabs.ru> wrote:
> 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>
Anyone, ping?
> ---
>
> 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
>
--
Alexey
