/*
* All observed requests have pin == 1. We could have a global here, that
* gets incremented and returned every time - unfortunately, pci_map_irq
* may be called on the same device over and over, and need to return the
* same value. On O2000, pin can be 0 or 1, and PCI slots can be [0..7].
*
* A given PCI device, in general, should be able to intr any of the cpus
* on any one of the hubs connected to its xbow.
*/
int __devinit pcibios_map_irq(const struct pci_dev *dev, u8 slot, u8 pin)
{
struct bridge_controller *bc = BRIDGE_CONTROLLER(dev->bus);
int irq = bc->pci_int[slot];
if (irq == -1) {
irq = bc->pci_int[slot] = request_bridge_irq(bc);
if (irq < 0)
panic("Can't allocate interrupt for PCI device %s\n",
pci_name(dev));
}
irq_to_bridge[irq] = bc;
irq_to_slot[irq] = slot;
return irq;
}
/* Do platform specific device initialization at pci_enable_device() time */
int pcibios_plat_dev_init(struct pci_dev *dev)
{
struct bridge_controller *bc = BRIDGE_CONTROLLER(dev->bus);
struct pci_dev *rdev = bridge_root_dev(dev);
int slot = PCI_SLOT(rdev->devfn);
int irq;
irq = bc->pci_int[slot];
if (irq == -1) {
irq = request_bridge_irq(bc);
if (irq < 0)
return irq;
bc->pci_int[slot] = irq;
}
irq_to_bridge[irq] = bc;
irq_to_slot[irq] = slot;
dev->irq = irq;
return 0;
}
