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Commit 38805e5f authored by Kumar Gala's avatar Kumar Gala
Browse files

[POWERPC] Add the ability to find PCI capabilities early on 



Added early_find_capability that wraps pci_bus_find_capability and uses
fake_pci_bus() to allow us to call it before we've fully setup the
pci_controller.

Signed-off-by: default avatarKumar Gala <galak@kernel.crashing.org>
parent 9ac4dd30

arch/powerpc/kernel/pci_32.c

+7 −0
Original line number Diff line number Diff line
@@ -1468,3 +1468,10 @@ EARLY_PCI_OP(read, dword, u32 *) 
EARLY_PCI_OP(write, byte, u8)

EARLY_PCI_OP(write, word, u16)

EARLY_PCI_OP(write, dword, u32)



extern int pci_bus_find_capability (struct pci_bus *bus, unsigned int devfn, int cap);

int early_find_capability(struct pci_controller *hose, int bus, int devfn,

			  int cap)

{

	return pci_bus_find_capability(fake_pci_bus(hose, bus), devfn, cap);

}

include/asm-powerpc/pci-bridge.h

+3 −0
Original line number Diff line number Diff line
@@ -79,6 +79,9 @@ int early_write_config_word(struct pci_controller *hose, int bus, int dev_fn, 
int early_write_config_dword(struct pci_controller *hose, int bus, int dev_fn,

			     int where, u32 val);



extern int early_find_capability(struct pci_controller *hose, int bus,

				 int dev_fn, int cap);



extern void setup_indirect_pci_nomap(struct pci_controller* hose,

			       void __iomem *cfg_addr, void __iomem *cfg_data);

extern void setup_indirect_pci(struct pci_controller* hose,