linux/drivers/pci
Bjorn Helgaas 2fe2abf896 PCI: augment bus resource table with a list
Previously we used a table of size PCI_BUS_NUM_RESOURCES (16) for resources
forwarded to a bus by its upstream bridge.  We've increased this size
several times when the table overflowed.

But there's no good limit on the number of resources because host bridges
and subtractive decode bridges can forward any number of ranges to their
secondary buses.

This patch reduces the table to only PCI_BRIDGE_RESOURCE_NUM (4) entries,
which corresponds to the number of windows a PCI-to-PCI (3) or CardBus (4)
bridge can positively decode.  Any additional resources, e.g., PCI host
bridge windows or subtractively-decoded regions, are kept in a list.

I'd prefer a single list rather than this split table/list approach, but
that requires simultaneous changes to every architecture.  This approach
only requires immediate changes where we set up (a) host bridges with more
than four windows and (b) subtractive-decode P2P bridges, and we can
incrementally change other architectures to use the list.

Signed-off-by: Bjorn Helgaas <bjorn.helgaas@hp.com>
Signed-off-by: Jesse Barnes <jbarnes@virtuousgeek.org>
2010-02-23 09:43:37 -08:00
..
hotplug PCI: add pci_bus_for_each_resource(), remove direct bus->resource[] refs 2010-02-23 09:43:31 -08:00
pcie PCIe PME: use pci_pcie_cap() 2010-02-22 16:21:21 -08:00
.gitignore
Kconfig PCI: push deprecated pci_find_device() function to last user 2010-02-22 16:17:01 -08:00
Makefile PCI: push deprecated pci_find_device() function to last user 2010-02-22 16:17:01 -08:00
access.c PCI: Add pci_bus_set_ops 2009-06-16 14:29:33 -07:00
bus.c PCI: augment bus resource table with a list 2010-02-23 09:43:37 -08:00
dmar.c Merge git://git.infradead.org/iommu-2.6 2009-12-16 10:11:38 -08:00
hotplug-pci.c PCI: fix section mismatch warning in pci_scan_child_bus 2008-03-04 15:07:03 -08:00
hotplug.c
htirq.c Merge branch 'x86/apic' into irq/numa 2009-05-12 12:17:36 +02:00
intel-iommu.c Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jbarnes/pci-2.6 2009-12-30 13:13:24 -08:00
intr_remapping.c Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jbarnes/pci-2.6 2009-12-30 13:13:24 -08:00
intr_remapping.h intr-remap: generic support for remapping HPET MSIs 2009-08-27 23:33:20 +02:00
ioapic.c PCI hotplug: move IOAPIC support from acpiphp to ioapic driver 2009-11-04 13:06:39 -08:00
iov.c PCI: use pci_is_pcie() in pci core 2009-11-24 15:25:16 -08:00
iova.c intel-iommu: Remove superfluous iova_alloc_lock from IOVA code 2009-07-15 08:17:02 +01:00
irq.c PCI: struct device - replace bus_id with dev_name(), dev_set_name() 2009-01-07 11:12:23 -08:00
msi.c PCI MSI: Style cleanups 2009-09-09 13:29:35 -07:00
msi.h PCI MSI: shorten PCI_MSIX_ENTRY_* symbol names 2009-06-29 12:15:19 -07:00
pci-acpi.c PCI / ACPI / PM: Platform support for PCI PME wake-up 2010-02-22 16:21:02 -08:00
pci-driver.c PCI PM: Run-time callbacks for PCI bus type 2010-02-22 16:21:19 -08:00
pci-stub.c PCI: pci-stub: add pci_stub.ids parameter 2009-09-09 13:44:34 -07:00
pci-sysfs.c PCI: Check the node argument passed to cpumask_of_node 2010-01-04 15:10:56 -08:00
pci.c PCI: add pci_bus_for_each_resource(), remove direct bus->resource[] refs 2010-02-23 09:43:31 -08:00
pci.h PCI PM: Run-time callbacks for PCI bus type 2010-02-22 16:21:19 -08:00
probe.c PCI: augment bus resource table with a list 2010-02-23 09:43:37 -08:00
proc.c PCI: define PCI resource names in an 'enum' 2009-01-07 11:13:01 -08:00
quirks.c PCI: Clean up build for CONFIG_PCI_QUIRKS unset 2010-02-22 16:15:21 -08:00
remove.c PCI: eliminate redundant pci_stop_dev() call from pci_destroy_dev() 2009-06-11 12:04:19 -07:00
rom.c PCI: fix rom.c kernel-doc warning 2009-02-13 12:01:56 -08:00
search.c PCI: change PCI nomenclature in drivers/pci/ (comment changes) 2009-12-16 13:37:53 -08:00
setup-bus.c PCI: add pci_bus_for_each_resource(), remove direct bus->resource[] refs 2010-02-23 09:43:31 -08:00
setup-irq.c PCI: use dev_printk when possible 2008-06-25 16:05:13 -07:00
setup-res.c PCI: improve discovery/configuration messages 2009-11-04 13:06:44 -08:00
slot.c PCI: Add support for reporting PCIe 3.0 speeds 2010-02-22 16:15:19 -08:00
syscall.c headers: smp_lock.h redux 2009-07-12 12:22:34 -07:00