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>
diff --git a/arch/arm/include/asm/mach/pci.h b/arch/arm/include/asm/mach/pci.h
index a1c90d7..454d642 100644
--- a/arch/arm/include/asm/mach/pci.h
+++ b/arch/arm/include/asm/mach/pci.h
@@ -36,6 +36,8 @@
resource_size_t start,
resource_size_t size,
resource_size_t align);
+ void (*add_bus)(struct pci_bus *bus);
+ void (*remove_bus)(struct pci_bus *bus);
};
/*
@@ -63,6 +65,8 @@
resource_size_t start,
resource_size_t size,
resource_size_t align);
+ void (*add_bus)(struct pci_bus *bus);
+ void (*remove_bus)(struct pci_bus *bus);
void *private_data; /* platform controller private data */
};