diff options
Diffstat (limited to 'arch/powerpc/platforms/powernv/eeh-ioda.c')
| -rw-r--r-- | arch/powerpc/platforms/powernv/eeh-ioda.c | 38 |
1 files changed, 36 insertions, 2 deletions
diff --git a/arch/powerpc/platforms/powernv/eeh-ioda.c b/arch/powerpc/platforms/powernv/eeh-ioda.c index 268cd46..58ef809 100644 --- a/arch/powerpc/platforms/powernv/eeh-ioda.c +++ b/arch/powerpc/platforms/powernv/eeh-ioda.c @@ -474,6 +474,8 @@ static int ioda_eeh_bridge_reset(struct pci_dev *dev, int option) { struct device_node *dn = pci_device_to_OF_node(dev); + struct eeh_dev *edev = of_node_to_eeh_dev(dn); + int aer = edev ? edev->aer_cap : 0; u32 ctrl; pr_debug("%s: Reset PCI bus %04x:%02x with option %d\n", @@ -483,24 +485,56 @@ static int ioda_eeh_bridge_reset(struct pci_dev *dev, int option) switch (option) { case EEH_RESET_FUNDAMENTAL: case EEH_RESET_HOT: + /* Don't report linkDown event */ + if (aer) { + eeh_ops->read_config(dn, aer + PCI_ERR_UNCOR_MASK, + 4, &ctrl); + ctrl |= PCI_ERR_UNC_SURPDN; + eeh_ops->write_config(dn, aer + PCI_ERR_UNCOR_MASK, + 4, ctrl); + } + eeh_ops->read_config(dn, PCI_BRIDGE_CONTROL, 2, &ctrl); ctrl |= PCI_BRIDGE_CTL_BUS_RESET; eeh_ops->write_config(dn, PCI_BRIDGE_CONTROL, 2, ctrl); - msleep(EEH_PE_RST_HOLD_TIME); + break; case EEH_RESET_DEACTIVATE: eeh_ops->read_config(dn, PCI_BRIDGE_CONTROL, 2, &ctrl); ctrl &= ~PCI_BRIDGE_CTL_BUS_RESET; eeh_ops->write_config(dn, PCI_BRIDGE_CONTROL, 2, ctrl); - msleep(EEH_PE_RST_SETTLE_TIME); + + /* Continue reporting linkDown event */ + if (aer) { + eeh_ops->read_config(dn, aer + PCI_ERR_UNCOR_MASK, + 4, &ctrl); + ctrl &= ~PCI_ERR_UNC_SURPDN; + eeh_ops->write_config(dn, aer + PCI_ERR_UNCOR_MASK, + 4, ctrl); + } + break; } return 0; } +void pnv_pci_reset_secondary_bus(struct pci_dev *dev) +{ + struct pci_controller *hose; + + if (pci_is_root_bus(dev->bus)) { + hose = pci_bus_to_host(dev->bus); + ioda_eeh_root_reset(hose, EEH_RESET_HOT); + ioda_eeh_root_reset(hose, EEH_RESET_DEACTIVATE); + } else { + ioda_eeh_bridge_reset(dev, EEH_RESET_HOT); + ioda_eeh_bridge_reset(dev, EEH_RESET_DEACTIVATE); + } +} + /** * ioda_eeh_reset - Reset the indicated PE * @pe: EEH PE |
