diff options
Diffstat (limited to 'drivers/pci/pcie/portdrv_core.c')
| -rw-r--r-- | drivers/pci/pcie/portdrv_core.c | 29 |
1 files changed, 29 insertions, 0 deletions
diff --git a/drivers/pci/pcie/portdrv_core.c b/drivers/pci/pcie/portdrv_core.c index 8637f6068f9c..308a2ed35e05 100644 --- a/drivers/pci/pcie/portdrv_core.c +++ b/drivers/pci/pcie/portdrv_core.c @@ -37,6 +37,20 @@ static void release_pcie_device(struct device *dev) kfree(to_pcie_device(dev)); } +/** + * pcibios_check_service_irqs - check irqs in the device tree + * @dev: PCI Express port to handle + * @irqs: Array of irqs to populate + * @mask: Bitmask of port capabilities returned by get_port_device_capability() + * + * Return value: 0 means no service irqs in the device tree + * + */ +int __weak pcibios_check_service_irqs(struct pci_dev *dev, int *irqs, int mask) +{ + return 0; +} + /* * Fill in *pme, *aer, *dpc with the relevant Interrupt Message Numbers if * services are enabled in "mask". Return the number of MSI/MSI-X vectors @@ -165,10 +179,25 @@ static int pcie_port_enable_irq_vec(struct pci_dev *dev, int *irqs, int mask) static int pcie_init_service_irqs(struct pci_dev *dev, int *irqs, int mask) { int ret, i; + int irq = -1; for (i = 0; i < PCIE_PORT_DEVICE_MAXSERVICES; i++) irqs[i] = -1; + /* Check if some platforms owns independent irq pins for AER/PME etc. + * Some platforms may own independent AER/PME interrupts and set + * them in the device tree file. + */ + ret = pcibios_check_service_irqs(dev, irqs, mask); + if (ret) { + if (dev->irq) + irq = dev->irq; + for (i = 0; i < PCIE_PORT_DEVICE_MAXSERVICES; i++) + if (irqs[i] == -1) + irqs[i] = irq; + return 0; + } + /* * If we support PME but can't use MSI/MSI-X for it, we have to * fall back to INTx or other interrupts, e.g., a system shared |