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#include <linux/pci.h>
#include <linux/acpi.h>
#include <linux/init.h>
#include <linux/irq.h>
#include <linux/dmi.h>
#include <asm/numa.h>
#include "pci.h"
static int __devinit can_skip_ioresource_align(struct dmi_system_id *d)
{
pci_probe |= PCI_CAN_SKIP_ISA_ALIGN;
printk(KERN_INFO "PCI: %s detected, can skip ISA alignment\n", d->ident);
return 0;
}
static struct dmi_system_id acpi_pciprobe_dmi_table[] = {
/*
* Systems where PCI IO resource ISA alignment can be skipped
* when the ISA enable bit in the bridge control is not set
*/
{
.callback = can_skip_ioresource_align,
.ident = "IBM System x3800",
.matches = {
DMI_MATCH(DMI_SYS_VENDOR, "IBM"),
DMI_MATCH(DMI_PRODUCT_NAME, "x3800"),
},
},
{
.callback = can_skip_ioresource_align,
.ident = "IBM System x3850",
.matches = {
DMI_MATCH(DMI_SYS_VENDOR, "IBM"),
DMI_MATCH(DMI_PRODUCT_NAME, "x3850"),
},
},
{
.callback = can_skip_ioresource_align,
.ident = "IBM System x3950",
.matches = {
DMI_MATCH(DMI_SYS_VENDOR, "IBM"),
DMI_MATCH(DMI_PRODUCT_NAME, "x3950"),
},
},
{}
};
struct pci_bus * __devinit pci_acpi_scan_root(struct acpi_device *device, int domain, int busnum)
{
struct pci_bus *bus;
struct pci_sysdata *sd;
int pxm;
dmi_check_system(acpi_pciprobe_dmi_table);
/* Allocate per-root-bus (not per bus) arch-specific data.
* TODO: leak; this memory is never freed.
* It's arguable whether it's worth the trouble to care.
*/
sd = kzalloc(sizeof(*sd), GFP_KERNEL);
if (!sd) {
printk(KERN_ERR "PCI: OOM, not probing PCI bus %02x\n", busnum);
return NULL;
}
if (domain != 0) {
printk(KERN_WARNING "PCI: Multiple domains not supported\n");
kfree(sd);
return NULL;
}
sd->node = -1;
pxm = acpi_get_pxm(device->handle);
#ifdef CONFIG_ACPI_NUMA
if (pxm >= 0)
sd->node = pxm_to_node(pxm);
#endif
bus = pci_scan_bus_parented(NULL, busnum, &pci_root_ops, sd);
if (!bus)
kfree(sd);
#ifdef CONFIG_ACPI_NUMA
if (bus != NULL) {
if (pxm >= 0) {
printk("bus %d -> pxm %d -> node %d\n",
busnum, pxm, sd->node);
}
}
#endif
return bus;
}
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;
pcibios_disable_irq = acpi_pci_irq_disable;
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");
for_each_pci_dev(dev)
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);
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