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powerpc: Create pci_controller_ops.reset_secondary_bus and shim 

Add pci_controller_ops.reset_secondary_bus,
shadowing ppc_md.pcibios_reset_secondary_bus.
Add a shim, and changes the callsites to use the shim.

Use pcibios_reset_secondary_bus_shim, as both
pcibios_reset_secondary_bus and pci_reset_secondary_bus
are already taken.

Signed-off-by: Daniel Axtens <dja@axtens.net>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
This commit is contained in:
Daniel Axtens 2015-03-31 16:00:47 +11:00 committed by Michael Ellerman
parent 542070baf4
commit cd16c7ba0c
2 changed files with 18 additions and 6 deletions
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17
arch/powerpc/include/asm/pci-bridge.h
View File

@ -34,6 +34,7 @@ struct pci_controller_ops {
/* Called during PCI resource reassignment */
resource_size_t (*window_alignment)(struct pci_bus *, unsigned long type);
void (*reset_secondary_bus)(struct pci_dev *dev);
};
/*
@ -346,5 +347,21 @@ static inline resource_size_t pci_window_alignment(struct pci_bus *bus,
return 1;
}
static inline void pcibios_reset_secondary_bus_shim(struct pci_dev *dev)
{
struct pci_controller *phb = pci_bus_to_host(dev->bus);
if (phb->controller_ops.reset_secondary_bus)
phb->controller_ops.reset_secondary_bus(dev);
else if (ppc_md.pcibios_reset_secondary_bus)
ppc_md.pcibios_reset_secondary_bus(dev);
else
/*
* Fallback to the generic function if no
* platform-specific one is provided
*/
pci_reset_secondary_bus(dev);
}
#endif /* __KERNEL__ */
#endif /* _ASM_POWERPC_PCI_BRIDGE_H */

7
arch/powerpc/kernel/pci-common.c
View File

@ -114,12 +114,7 @@ resource_size_t pcibios_window_alignment(struct pci_bus *bus,
void pcibios_reset_secondary_bus(struct pci_dev *dev)
{
if (ppc_md.pcibios_reset_secondary_bus) {
ppc_md.pcibios_reset_secondary_bus(dev);
return;
}
pci_reset_secondary_bus(dev);
pcibios_reset_secondary_bus_shim(dev);
}
static resource_size_t pcibios_io_size(const struct pci_controller *hose)