[PATCH 03/25] [POWERPC] Add the ability to find PCI capabilities early on

Kumar Gala galak at kernel.crashing.org
Tue Jul 24 06:49:50 EST 2007

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

Signed-off-by: Kumar Gala <galak at kernel.crashing.org>
 arch/powerpc/kernel/pci_32.c     |    7 +++++++
 include/asm-powerpc/pci-bridge.h |    3 +++
 2 files changed, 10 insertions(+), 0 deletions(-)

diff --git a/arch/powerpc/kernel/pci_32.c b/arch/powerpc/kernel/pci_32.c
index 0adf077..bfcfa14 100644
--- a/arch/powerpc/kernel/pci_32.c
+++ b/arch/powerpc/kernel/pci_32.c
@@ -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);
diff --git a/include/asm-powerpc/pci-bridge.h b/include/asm-powerpc/pci-bridge.h
index e72c2a6..7a00b8e 100644
--- a/include/asm-powerpc/pci-bridge.h
+++ b/include/asm-powerpc/pci-bridge.h
@@ -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,

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