sh: pci: Consolidate pci_iomap() and use the generic I/O base.

This consolidates the pci_iomap() definitions and reworks how the I/O
port base is handled. PCI channels can register their own I/O map base,
or if none is provided, the system-wide generic I/O base is used instead.

Functionally nothing changes, while this allows us to kill off lots of
I/O address special casing and lookups.

Signed-off-by: Paul Mundt <lethal@linux-sh.org>

1 files changed, 2 insertions, 20 deletions

diff --git a/arch/sh/include/asm/pci.h b/arch/sh/include/asm/pci.h
index e8265fd0bb6f..532428289772 100644
--- a/arch/sh/include/asm/pci.h
+++ b/arch/sh/include/asm/pci.h
@@ -26,6 +26,8 @@ struct pci_channel {
         int enabled;
         unsigned long reg_base;
         unsigned long io_base;
+
+        unsigned long io_map_base;
 };
 
 /*
@@ -110,31 +112,11 @@ static inline int __is_pci_memory(unsigned long phys_addr, unsigned long size)
         }
         return 0;
 }
-
-static inline void __iomem *__get_pci_io_base(unsigned long port,
-                                              unsigned long size)
-{
-        struct pci_channel *p;
-        struct resource *res;
-
-        for (p = board_pci_channels; p->init; p++) {
-                res = p->io_resource;
-                if (p->enabled && (port >= res->start) &&
-                    (port + size) <= (res->end + 1))
-                        return (void __iomem *)(p->io_base + port);
-        }
-        return NULL;
-}
 #else
 static inline int __is_pci_memory(unsigned long phys_addr, unsigned long size)
 {
         return 0;
 }
-static inline void __iomem *__get_pci_io_base(unsigned long port,
-                                              unsigned long size)
-{
-        return NULL;
-}
 #endif
 
 /* Board-specific fixup routines. */