Yinghai Lu 308cf8e13f PCI: get larger bridge ranges when space is available ... Found one system: [ 71.120590] pci 0000:40:05.0: scanning behind bridge, config 4f4a40, pass 0 [ 71.138283] PCI: Scanning bus 0000:4a [ 71.140341] pci 0000:4a:00.0: found [15b3:6278] class 000c06 header type 00 [ 71.157173] pci 0000:4a:00.0: reg 10 64bit mmio: [0x000000-0x0fffff] [ 71.161697] pci 0000:4a:00.0: reg 18 64bit mmio pref: [0x000000-0x7fffff] [ 71.179403] pci 0000:4a:00.0: reg 20 64bit mmio pref: [0x000000-0xfffffff] [ 71.185366] pci 0000:4a:00.0: calling quirk_resource_alignment+0x0/0x1dd [ 71.200846] pci 0000:4a:00.0: disabling ASPM on pre-1.1 PCIe device. You can enable it with 'pcie_aspm=force' [ 71.219623] PCI: Fixups for bus 0000:4a [ 71.222194] pci 0000:40:05.0: bridge 32bit mmio: [0xcf000000-0xcf0fffff] [ 71.238662] pci 0000:40:05.0: bridge 64bit mmio pref: [0xcd800000-0xcdffffff] [ 71.255793] PCI: Bus scan for 0000:4a returning with max=4a Device needs a big pref mmio, but BIOS doesn't allocate mmio to it aside from a small MMIO range. Later, the kernel will not allocate resources to that to the device: [ 99.574030] pci 0000:4a:00.0: BAR 4: can't allocate mem resource [0xd0000000-0xcdffffff] [ 99.580102] pci 0000:4a:00.0: BAR 2: got res [0xcd800000-0xcdffffff] bus [0xcd800000-0xcdffffff] flags 0x12120c [ 99.602307] pci 0000:4a:00.0: BAR 2: moved to bus [0xcd800000-0xcdffffff] flags 0x12120c [ 99.615991] pci 0000:4a:00.0: BAR 0: got res [0xcf000000-0xcf0fffff] bus [0xcf000000-0xcf0fffff] flags 0x120204 [ 99.634499] pci 0000:4a:00.0: BAR 0: moved to bus [0xcf000000-0xcf0fffff] flags 0x120204 [ 99.654318] pci 0000:40:05.0: PCI bridge, secondary bus 0000:4a [ 99.658766] pci 0000:40:05.0: IO window: disabled [ 99.675478] pci 0000:40:05.0: MEM window: 0xcf000000-0xcf0fffff [ 99.681663] pci 0000:40:05.0: PREFETCH window: 0x000000cd800000-0x000000cdffffff So try to get a big range in the pci bridge if there is no child using that range. With the patch we get: [ 99.104525] pci 0000:4a:00.0: BAR 4: got res [0xfc080000000-0xfc08fffffff] bus [0xfc080000000-0xfc08fffffff] flags 0x12120c [ 99.123624] pci 0000:4a:00.0: BAR 4: moved to bus [0xfc080000000-0xfc08fffffff] flags 0x12120c [ 99.131977] pci 0000:4a:00.0: BAR 2: got res [0xfc090000000-0xfc0907fffff] bus [0xfc090000000-0xfc0907fffff] flags 0x12120c [ 99.149788] pci 0000:4a:00.0: BAR 2: moved to bus [0xfc090000000-0xfc0907fffff] flags 0x12120c [ 99.169248] pci 0000:4a:00.0: BAR 0: got res [0xc0200000-0xc02fffff] bus [0xc0200000-0xc02fffff] flags 0x120204 [ 99.189508] pci 0000:4a:00.0: BAR 0: moved to bus [0xc0200000-0xc02fffff] flags 0x120204 [ 99.206402] pci 0000:40:05.0: PCI bridge, secondary bus 0000:4a [ 99.210637] pci 0000:40:05.0: IO window: disabled [ 99.224856] pci 0000:40:05.0: MEM window: 0xc0200000-0xc03fffff [ 99.230019] pci 0000:40:05.0: PREFETCH window: 0x000fc080000000-0x000fc097ffffff Signed-off-by: Yinghai Lu <yinghai@kernel.org> Signed-off-by: Jesse Barnes <jbarnes@virtuousgeek.org>		2009-10-07 09:28:18 -07:00
..
hotplug	ACPICA: fixup after acpi_get_object_info() change	2009-09-25 14:24:22 -04:00
pcie	PCI: PCIe portdrv: remove "-driver" from driver name	2009-10-06 09:41:48 -07:00
.gitignore
access.c	PCI: Add pci_bus_set_ops	2009-06-16 14:29:33 -07:00
bus.c	PCI AER: support Multiple Error Received and no error source id	2009-06-16 14:30:13 -07:00
dmar.c	Merge git://git.infradead.org/iommu-2.6	2009-09-23 10:06:10 -07:00
hotplug-pci.c
hotplug.c
htirq.c	Merge branch 'x86/apic' into irq/numa	2009-05-12 12:17:36 +02:00
intel-iommu.c	Merge git://git.infradead.org/iommu-2.6	2009-09-23 10:06:10 -07:00
intr_remapping.c	Merge git://git.infradead.org/iommu-2.6	2009-09-23 10:06:10 -07:00
intr_remapping.h	Intel-IOMMU, intr-remap: source-id checking	2009-06-23 22:09:17 +01:00
iov.c	PCI SR-IOV: correct broken resource alignment calculations	2009-08-30 08:37:25 -07:00
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
Kconfig	PCI: initialize and release SR-IOV capability	2009-03-20 10:48:22 -07:00
legacy.c	PCI: disable pci_find_device warnings when deprecated pci functions are enabled	2009-09-09 13:29:25 -07:00
Makefile	PCI: disable pci_find_device warnings when deprecated pci functions are enabled	2009-09-09 13:29:25 -07:00
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: Propagate wake-up enable for devices w/o ACPI support	2009-09-09 14:19:24 -07:00
pci-driver.c	Merge branch 'linux-next' of git://git.kernel.org/pub/scm/linux/kernel/git/jbarnes/pci-2.6	2009-09-16 07:49:54 -07:00
pci-stub.c	PCI: pci-stub: add pci_stub.ids parameter	2009-09-09 13:44:34 -07:00
pci-sysfs.c	PCI: expose function reset capability in sysfs	2009-09-09 13:29:24 -07:00
pci.c	PCI: pci.c: fix kernel-doc notation	2009-10-07 09:28:18 -07:00
pci.h	PCI: Simplify hotplug mch quirk.	2009-09-09 14:06:49 -07:00
probe.c	PCI: Clear saved_state after the state has been restored	2009-09-14 13:41:46 -07:00
proc.c	PCI: define PCI resource names in an 'enum'	2009-01-07 11:13:01 -08:00
quirks.c	PCI quirk: TI XIO200a erroneously reports support for fast b2b transfers	2009-10-07 09:28:17 -07:00
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: disable pci_find_device warnings when deprecated pci functions are enabled	2009-09-09 13:29:25 -07:00
setup-bus.c	PCI: get larger bridge ranges when space is available	2009-10-07 09:28:18 -07:00
setup-irq.c	PCI: use dev_printk when possible	2008-06-25 16:05:13 -07:00
setup-res.c	PCI: remove pci_assign_resource_fixed()	2009-10-06 09:42:04 -07:00
slot.c	PCI: fix kernel-doc warnings	2009-06-29 12:13:56 -07:00
syscall.c	headers: smp_lock.h redux	2009-07-12 12:22:34 -07:00