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powerpc: Create pci_controller_ops.window_alignment and shim

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Add pci_controller_ops.window_alignment,
shadowing ppc_md.pcibios_window_alignment.
Add a shim, and changes the callsites to use the shim.

Here, we use pci_window_alignment, as pcibios_window_alignment is
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 16:00:46 +11:00 • committed by Michael Ellerman
parent b31e79f8d9
commit 542070baf4
2 changed files with 22 additions and 9 deletions
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21
arch/powerpc/include/asm/pci-bridge.h
View file

@ -31,6 +31,9 @@ struct pci_controller_ops {
/* Called when pci_enable_device() is called. Returns true to /* Called when pci_enable_device() is called. Returns true to
* allow assignment/enabling of the device. */ * allow assignment/enabling of the device. */
bool (*enable_device_hook)(struct pci_dev *); bool (*enable_device_hook)(struct pci_dev *);
/* Called during PCI resource reassignment */
resource_size_t (*window_alignment)(struct pci_bus *, unsigned long type);
}; };
/* /*
@ -325,5 +328,23 @@ static inline bool pcibios_enable_device_hook(struct pci_dev *dev)
return true; return true;
} }
static inline resource_size_t pci_window_alignment(struct pci_bus *bus,
unsigned long type)
{
struct pci_controller *phb = pci_bus_to_host(bus);
if (phb->controller_ops.window_alignment)
return phb->controller_ops.window_alignment(bus, type);
if (ppc_md.pcibios_window_alignment)
return ppc_md.pcibios_window_alignment(bus, type);
/*
* PCI core will figure out the default
* alignment: 4KiB for I/O and 1MiB for
* memory window.
*/
return 1;
}
#endif /* __KERNEL__ */ #endif /* __KERNEL__ */
#endif /* _ASM_POWERPC_PCI_BRIDGE_H */ #endif /* _ASM_POWERPC_PCI_BRIDGE_H */

10
arch/powerpc/kernel/pci-common.c
View file

@ -109,15 +109,7 @@ void pcibios_free_controller(struct pci_controller *phb)
resource_size_t pcibios_window_alignment(struct pci_bus *bus, resource_size_t pcibios_window_alignment(struct pci_bus *bus,
unsigned long type) unsigned long type)
{ {
if (ppc_md.pcibios_window_alignment) return pci_window_alignment(bus, type);
return ppc_md.pcibios_window_alignment(bus, type);
/*
* PCI core will figure out the default
* alignment: 4KiB for I/O and 1MiB for
* memory window.
*/
return 1;
} }
void pcibios_reset_secondary_bus(struct pci_dev *dev) void pcibios_reset_secondary_bus(struct pci_dev *dev)