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| author | Thomas Petazzoni <thomas.petazzoni@free-electrons.com> | 2013-08-09 22:27:12 +0200 |
|---|---|---|
| committer | Jason Cooper <jason@lakedaemon.net> | 2013-08-12 15:27:12 +0000 |
| commit | 9d981ea5d43af79e1d7942d3d28e0f609db8b5d4 (patch) | |
| tree | 1864c01f28105c6cbf49d0aabcf9e308a7c12072 /arch/arm/kernel/bios32.c | |
| parent | 0d5a6db3aa46faafd0212650bfd709d51240d9da (diff) | |
| download | linux-9d981ea5d43af79e1d7942d3d28e0f609db8b5d4.tar.bz2 | |
ARM: pci: add ->add_bus() and ->remove_bus() hooks to hw_pci
Some PCI drivers may need to adjust the pci_bus structure after it has
been allocated by the Linux PCI core. The PCI core allows
architectures to implement the pcibios_add_bus() and
pcibios_remove_bus() for this purpose. This commit therefore extends
the hw_pci and pci_sys_data structures of the ARM PCI core to allow
PCI drivers to register ->add_bus() and ->remove_bus() in hw_pci,
which will get called when a bus is added or removed from the system.
This will be used for example by the Marvell PCIe driver to connect a
particular PCI bus with its corresponding MSI chip to handle Message
Signaled Interrupts.
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>
Reviewed-by: Thierry Reding <thierry.reding@gmail.com>
Acked-by: Russell King <rmk+kernel@arm.linux.org.uk>
Tested-by: Daniel Price <daniel.price@gmail.com>
Tested-by: Thierry Reding <thierry.reding@gmail.com>
Signed-off-by: Jason Cooper <jason@lakedaemon.net>
Diffstat (limited to 'arch/arm/kernel/bios32.c')
| -rw-r--r-- | arch/arm/kernel/bios32.c | 16 |
1 files changed, 16 insertions, 0 deletions
diff --git a/arch/arm/kernel/bios32.c b/arch/arm/kernel/bios32.c index 261fcc826169..1ec9c8701c26 100644 --- a/arch/arm/kernel/bios32.c +++ b/arch/arm/kernel/bios32.c @@ -363,6 +363,20 @@ void pcibios_fixup_bus(struct pci_bus *bus) } EXPORT_SYMBOL(pcibios_fixup_bus); +void pcibios_add_bus(struct pci_bus *bus) +{ + struct pci_sys_data *sys = bus->sysdata; + if (sys->add_bus) + sys->add_bus(bus); +} + +void pcibios_remove_bus(struct pci_bus *bus) +{ + struct pci_sys_data *sys = bus->sysdata; + if (sys->remove_bus) + sys->remove_bus(bus); +} + /* * Swizzle the device pin each time we cross a bridge. If a platform does * not provide a swizzle function, we perform the standard PCI swizzling. @@ -464,6 +478,8 @@ static void pcibios_init_hw(struct device *parent, struct hw_pci *hw, sys->swizzle = hw->swizzle; sys->map_irq = hw->map_irq; sys->align_resource = hw->align_resource; + sys->add_bus = hw->add_bus; + sys->remove_bus = hw->remove_bus; INIT_LIST_HEAD(&sys->resources); if (hw->private_data) |