[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: Kumar Gala <galak@kernel.crashing.org>
git-mirror · Jul 23, 2007 · 38805e5 · 38805e5
1 parent 9ac4dd3
commit 38805e5
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diff --git 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
@@ -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,