return -ENODEV;
printk(KERN_INFO "PCI: Using ACPI for IRQ routing\n");
- acpi_irq_penalty_init();
pcibios_enable_irq = acpi_pci_irq_enable;
pcibios_disable_irq = acpi_pci_irq_disable;
x86_init.pci.init_irq = x86_init_noop;
return penalty;
}
-int __init acpi_irq_penalty_init(void)
-{
- struct acpi_pci_link *link;
- int i;
-
- /*
- * Update penalties to facilitate IRQ balancing.
- */
- list_for_each_entry(link, &acpi_link_list, list) {
-
- /*
- * reflect the possible and active irqs in the penalty table --
- * useful for breaking ties.
- */
- if (link->irq.possible_count) {
- int penalty =
- PIRQ_PENALTY_PCI_POSSIBLE /
- link->irq.possible_count;
-
- for (i = 0; i < link->irq.possible_count; i++) {
- if (link->irq.possible[i] < ACPI_MAX_ISA_IRQS)
- acpi_isa_irq_penalty[link->irq.
- possible[i]] +=
- penalty;
- }
-
- } else if (link->irq.active &&
- (link->irq.active < ACPI_MAX_ISA_IRQS)) {
- acpi_isa_irq_penalty[link->irq.active] +=
- PIRQ_PENALTY_PCI_POSSIBLE;
- }
- }
-
- return 0;
-}
-
static int acpi_irq_balance = -1; /* 0: static, 1: balance */
static int acpi_pci_link_allocate(struct acpi_pci_link *link)
/* ACPI PCI Interrupt Link (pci_link.c) */
-int acpi_irq_penalty_init(void);
int acpi_pci_link_allocate_irq(acpi_handle handle, int index, int *triggering,
int *polarity, char **name);
int acpi_pci_link_free_irq(acpi_handle handle);