kernel-hacking-2024-linux-s.../drivers/pci
Andres Salomon 73d2eaac8a CS5536: apply pci quirk for BIOS SMBUS bug
The new cs5535-* drivers use PCI header config info rather than MSRs to
determine the memory region to use for things like GPIOs and MFGPTs.  As
anticipated, we've run into a buggy BIOS:

[    0.081818] pci 0000:00:14.0: reg 10: [io  0x6000-0x7fff]
[    0.081906] pci 0000:00:14.0: reg 14: [io  0x6100-0x61ff]
[    0.082015] pci 0000:00:14.0: reg 18: [io  0x6200-0x63ff]
[    0.082917] pci 0000:00:14.2: reg 20: [io  0xe000-0xe00f]
[    0.083551] pci 0000:00:15.0: reg 10: [mem 0xa0010000-0xa0010fff]
[    0.084436] pci 0000:00:15.1: reg 10: [mem 0xa0011000-0xa0011fff]
[    0.088816] PCI: pci_cache_line_size set to 32 bytes
[    0.088938] pci 0000:00:14.0: address space collision: [io 0x6100-0x61ff] already in use
[    0.089052] pci 0000:00:14.0: can't reserve [io  0x6100-0x61ff]

This is a Soekris board, and its BIOS sets the size of the PCI ISA bridge
device's BAR0 to 8k.  In reality, it should be 8 bytes (BAR0 is used for
SMBus stuff).  This quirk checks for an incorrect size, and resets it
accordingly.

Signed-off-by: Andres Salomon <dilinger@collabora.co.uk>
Tested-by: Leigh Porter <leigh@leighporter.org>
Tested-by: Jens Rottmann <JRottmann@LiPPERTEmbedded.de>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2010-02-05 07:36:50 -08:00
..
hotplug PCI: change PCI nomenclature in drivers/pci/ (comment changes) 2009-12-16 13:37:53 -08:00
pcie PCI: fix nested spinlock hang in aer_inject 2010-01-25 10:42:52 -08:00
.gitignore
access.c
bus.c
dmar.c Merge git://git.infradead.org/iommu-2.6 2009-12-16 10:11:38 -08:00
hotplug-pci.c
hotplug.c
htirq.c
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
ioapic.c
iov.c PCI: use pci_is_pcie() in pci core 2009-11-24 15:25:16 -08:00
iova.c
irq.c
Kconfig
legacy.c
Makefile
msi.c
msi.h
pci-acpi.c PCI/PM: Propagate wake-up enable for PCIe devices too 2009-12-16 13:37:49 -08:00
pci-driver.c
pci-stub.c
pci-sysfs.c PCI: Check the node argument passed to cpumask_of_node 2010-01-04 15:10:56 -08:00
pci.c PCI/PM: Use per-device D3 delays 2010-01-04 15:41:47 -08:00
pci.h PCI: Fix build if quirks are not enabled 2009-12-31 12:00:45 -08:00
probe.c powerpc/pci: Add calls to set_pcie_port_type() and set_pcie_hotplug_bridge() 2010-01-29 16:51:10 +11:00
proc.c
quirks.c CS5536: apply pci quirk for BIOS SMBUS bug 2010-02-05 07:36:50 -08:00
remove.c
rom.c
search.c PCI: change PCI nomenclature in drivers/pci/ (comment changes) 2009-12-16 13:37:53 -08:00
setup-bus.c PCI: Always set prefetchable base/limit upper32 registers 2009-12-04 15:52:43 -08:00
setup-irq.c
setup-res.c
slot.c
syscall.c