diff options
Diffstat (limited to 'arch/i386/pci/acpi.c')
| -rw-r--r-- | arch/i386/pci/acpi.c | 53 |
1 files changed, 53 insertions, 0 deletions
diff --git a/arch/i386/pci/acpi.c b/arch/i386/pci/acpi.c new file mode 100644 index 000000000000..2db65ec45dc3 --- /dev/null +++ b/arch/i386/pci/acpi.c @@ -0,0 +1,53 @@ +#include <linux/pci.h> +#include <linux/acpi.h> +#include <linux/init.h> +#include <linux/irq.h> +#include <asm/hw_irq.h> +#include "pci.h" + +struct pci_bus * __devinit pci_acpi_scan_root(struct acpi_device *device, int domain, int busnum) +{ + if (domain != 0) { + printk(KERN_WARNING "PCI: Multiple domains not supported\n"); + return NULL; + } + + return pcibios_scan_root(busnum); +} + +extern int pci_routeirq; +static int __init pci_acpi_init(void) +{ + struct pci_dev *dev = NULL; + + if (pcibios_scanned) + return 0; + + if (acpi_noirq) + return 0; + + printk(KERN_INFO "PCI: Using ACPI for IRQ routing\n"); + acpi_irq_penalty_init(); + pcibios_scanned++; + pcibios_enable_irq = acpi_pci_irq_enable; + + if (pci_routeirq) { + /* + * PCI IRQ routing is set up by pci_enable_device(), but we + * also do it here in case there are still broken drivers that + * don't use pci_enable_device(). + */ + printk(KERN_INFO "PCI: Routing PCI interrupts for all devices because \"pci=routeirq\" specified\n"); + while ((dev = pci_get_device(PCI_ANY_ID, PCI_ANY_ID, dev)) != NULL) + acpi_pci_irq_enable(dev); + } else + printk(KERN_INFO "PCI: If a device doesn't work, try \"pci=routeirq\". If it helps, post a report\n"); + +#ifdef CONFIG_X86_IO_APIC + if (acpi_ioapic) + print_IO_APIC(); +#endif + + return 0; +} +subsys_initcall(pci_acpi_init); |