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linux-2.6/drivers/pci
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Bjorn Helgaas 8d6a6a4763 PCI: treat mem BAR type "11" (reserved) as 32-bit, not 64-bit, BAR 
This fixes a minor regression where broken PCI devices that use the
reserved "11" memory BAR type worked before e354597cce but not after.

The low four bits of a memory BAR are "PTT0" where P=1 for prefetchable
BARs, and TT is as follows:

  00  32-bit BAR, anywhere in lower 4GB
  01  anywhere below 1MB (reserved as of PCI 2.2)
  10  64-bit BAR
  11  reserved

Prior to e354597cce, we treated "0100" as a 64-bit BAR and all others,
including prefetchable 64-bit BARs ("1100") as 32-bit BARs.  The e354597cce
fix, which appeared in 2.6.28, treats "x1x0" as 64-bit BARs, so the
reserved "x110" types are treated as 64-bit instead of 32-bit.

This patch returns to treating the reserved "11" type as a 32-bit BAR and
adds a warning if we see it.

It also logs a note if we see a 1M BAR.  This is not a warning, because
such hardware conforms to pre-PCI 2.2 spec, but I think it's worth noting
because Linux ignores the 1M restriction if it ever has to assign the BAR.

CC: Peter Chubb <peterc@gelato.unsw.edu.au>
Bugzilla: https://bugzilla.kernel.org/show_bug.cgi?id=35952
Reported-by: Jan Zwiegers <jan@radicalsystems.co.za>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Signed-off-by: Jesse Barnes <jbarnes@virtuousgeek.org>
2011-07-22 09:06:58 -07:00
..
hotplug PCI: pciehp: change wait time for valid configuration access 2011-07-22 09:06:41 -07:00
pcie PCI: PCIe AER: add aer_recover_queue 2011-07-22 08:25:37 -07:00
.gitignore
access.c PCI: handle positive error codes 2011-05-10 15:43:36 -07:00
bus.c PCI/sysfs: move bus cpuaffinity to class dev_attrs 2011-05-21 12:17:13 -07:00
dmar.c intel-iommu: Remove obsolete comment from detect_intel_iommu 2011-05-24 13:08:31 +01:00
hotplug-pci.c
hotplug.c
htirq.c drivers: Final irq namespace conversion 2011-03-29 14:48:19 +02:00
intel-iommu.c PM / Intel IOMMU: Fix init_iommu_pm_ops() for CONFIG_PM unset 2011-06-07 21:32:31 +02:00
intr_remapping.c Fix common misspellings 2011-03-31 11:26:23 -03:00
intr_remapping.h intr-remap: generic support for remapping HPET MSIs 2009-08-27 23:33:20 +02:00
ioapic.c include cleanup: Update gfp.h and slab.h includes to prepare for breaking implicit slab.h inclusion from percpu.h 2010-03-30 22:02:32 +09:00
iov.c PCI: Move ATS declarations in seperate header file 2011-04-11 09:01:41 +02:00
iova.c intel-iommu: Dont cache iova above 32bit 2011-06-01 12:47:40 +01:00
irq.c
Kconfig PCI: pci-label: Fix build failure when CONFIG_NLS is set to 'm' by allmodconfig 2011-04-12 08:39:02 -07:00
Makefile sparc32,leon: added LEON-common low-level PCI routines 2011-06-02 14:32:37 -07:00
msi.c drivers: Final irq namespace conversion 2011-03-29 14:48:19 +02:00
msi.h PCI: MSI: Move MSI-X entry definition to pci_regs.h 2010-12-23 12:53:07 -08:00
pci-acpi.c ACPI: Add D3 cold state 2011-05-29 02:21:08 -04:00
pci-driver.c PCI / PM: Block races between runtime PM and system sleep 2011-06-21 23:47:15 +02:00
pci-label.c PCI: label: remove #include of ACPI header to avoid warnings 2011-03-16 10:24:34 -07:00
pci-stub.c PCI: pci-stub: ignore zero-length id parameters 2010-12-23 12:53:52 -08:00
pci-sysfs.c PCI/sysfs: move bus cpuaffinity to class dev_attrs 2011-05-21 12:17:13 -07:00
pci.c PCI: correct pcie_set_readrq write size 2011-07-22 09:06:51 -07:00
pci.h PCI: conditional resource-reallocation through kernel parameter pci=realloc 2011-07-08 15:49:20 -07:00
probe.c PCI: treat mem BAR type "11" (reserved) as 32-bit, not 64-bit, BAR 2011-07-22 09:06:58 -07:00
proc.c BKL: remove extraneous #include <smp_lock.h> 2010-11-17 08:59:32 -08:00
quirks.c mmc: Add PCI fixup quirks for Ricoh 1180:e823 reader 2011-06-18 22:18:18 -04:00
remove.c PCI/sysfs: move bus cpuaffinity to class dev_attrs 2011-05-21 12:17:13 -07:00
rom.c
search.c PCI: use for_each_pci_dev() 2010-07-30 09:47:22 -07:00
setup-bus.c PCI: conditional resource-reallocation through kernel parameter pci=realloc 2011-07-08 15:49:20 -07:00
setup-irq.c PCI: Make the struct pci_dev * argument of pci_fixup_irqs const. 2011-07-22 08:26:06 -07:00
setup-res.c PCI: fix message typo 2010-10-17 20:03:05 -07:00
slot.c PCI: bus speed strings should be const 2010-08-31 15:28:00 -07:00
syscall.c
vpd.c pci: Add helper to search for VPD keywords 2010-02-28 00:43:33 -08:00
xen-pcifront.c pci/xen: Cleanup: convert int** to int[] 2011-02-18 12:41:49 -05:00