From a79e4198d1effbba040e9bf407a95fc9b3418789 Mon Sep 17 00:00:00 2001 From: Jeff Garzik Date: Thu, 11 Oct 2007 16:58:30 -0400 Subject: PCI: X86: Introduce and enable PCI domain support * fix bug in pci_read() and pci_write() which prevented PCI domain support from working (hardcoded domain 0). * unconditionally enable CONFIG_PCI_DOMAINS * implement pci_domain_nr() and pci_proc_domain(), as required of all arches when CONFIG_PCI_DOMAINS is enabled. * store domain in struct pci_sysdata, as assigned by ACPI * support "pci=nodomains" Signed-off-by: Jeff Garzik Cc: Andi Kleen Signed-off-by: Greg Kroah-Hartman --- arch/x86/pci/acpi.c | 13 +++++++------ arch/x86/pci/common.c | 6 ++++-- 2 files changed, 11 insertions(+), 8 deletions(-) (limited to 'arch/x86') diff --git a/arch/x86/pci/acpi.c b/arch/x86/pci/acpi.c index c6fd3a6afa4..27a391da9a9 100644 --- a/arch/x86/pci/acpi.c +++ b/arch/x86/pci/acpi.c @@ -189,6 +189,12 @@ struct pci_bus * __devinit pci_acpi_scan_root(struct acpi_device *device, int do dmi_check_system(acpi_pciprobe_dmi_table); + if (domain && !pci_domains_supported) { + printk(KERN_WARNING "PCI: Multiple domains not supported " + "(dom %d, bus %d)\n", domain, busnum); + return NULL; + } + /* 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. @@ -199,12 +205,7 @@ struct pci_bus * __devinit pci_acpi_scan_root(struct acpi_device *device, int do return NULL; } - if (domain != 0) { - printk(KERN_WARNING "PCI: Multiple domains not supported\n"); - kfree(sd); - return NULL; - } - + sd->domain = domain; sd->node = -1; pxm = acpi_get_pxm(device->handle); diff --git a/arch/x86/pci/common.c b/arch/x86/pci/common.c index 7d6a9a5aa7c..2d71bbc411d 100644 --- a/arch/x86/pci/common.c +++ b/arch/x86/pci/common.c @@ -29,12 +29,14 @@ struct pci_raw_ops *raw_pci_ops; static int pci_read(struct pci_bus *bus, unsigned int devfn, int where, int size, u32 *value) { - return raw_pci_ops->read(0, bus->number, devfn, where, size, value); + return raw_pci_ops->read(pci_domain_nr(bus), bus->number, + devfn, where, size, value); } static int pci_write(struct pci_bus *bus, unsigned int devfn, int where, int size, u32 value) { - return raw_pci_ops->write(0, bus->number, devfn, where, size, value); + return raw_pci_ops->write(pci_domain_nr(bus), bus->number, + devfn, where, size, value); } struct pci_ops pci_root_ops = { -- cgit v1.2.3