iop13xx: use more regular PCI I/O space handling

iop13xx confuses I/O port numbers with physical addresses, which breaks
legacy ISA I/O access behind PCI bridges and makes it unnecessarily hard
to unify the inb/outb accessors with other platforms. This removes the
special-casing and just puts all I/O ports into a single 128KB virtually
mapped I/O port range starting at port zero.

Signed-off-by: Arnd Bergmann <arnd@arndb.de>

2 files changed, 6 insertions, 12 deletions

diff --git a/arch/arm/mach-iop13xx/include/mach/io.h b/arch/arm/mach-iop13xx/include/mach/io.h
index f13188518025..e197cb8994ac 100644
--- a/arch/arm/mach-iop13xx/include/mach/io.h
+++ b/arch/arm/mach-iop13xx/include/mach/io.h
@@ -19,10 +19,10 @@
 #ifndef __ASM_ARM_ARCH_IO_H
 #define __ASM_ARM_ARCH_IO_H
 
-#define IO_SPACE_LIMIT 0xffffffff
+#include <mach/iop13xx.h>
 
-#define __io(a) __iop13xx_io(a)
+#define IO_SPACE_LIMIT (IOP13XX_PCIE_IO_WINDOW_SIZE + IOP13XX_PCIX_IO_WINDOW_SIZE - 1)
 
-extern void __iomem * __iop13xx_io(unsigned long io_addr);
+#define __io(a) (IOP13XX_PCIX_LOWER_IO_VA + ((a) & IO_SPACE_LIMIT))
 
 #endif
diff --git a/arch/arm/mach-iop13xx/include/mach/iop13xx.h b/arch/arm/mach-iop13xx/include/mach/iop13xx.h
index e190dcd7d72d..d3777dbc2e8b 100644
--- a/arch/arm/mach-iop13xx/include/mach/iop13xx.h
+++ b/arch/arm/mach-iop13xx/include/mach/iop13xx.h
@@ -69,17 +69,15 @@ extern unsigned long get_iop_tick_rate(void);
  * 0x8000.0000 + 928M   0x2.8000.0000   (ioremap)       PCIE outbound memory window
  *
  * IO MAP
- * 0x1000 + 64K 0x0.fffb.1000   0xfec6.1000     PCIX outbound i/o window
+ * 0x1000 + 64K 0x0.fffb.1000   0xfed6.1000     PCIX outbound i/o window
  * 0x1000 + 64K 0x0.fffd.1000   0xfed7.1000     PCIE outbound i/o window
  */
 #define IOP13XX_PCIX_IO_WINDOW_SIZE   0x10000UL
 #define IOP13XX_PCIX_LOWER_IO_PA      0xfffb0000UL
-#define IOP13XX_PCIX_LOWER_IO_VA      0xfec60000UL
+#define IOP13XX_PCIX_LOWER_IO_VA      0xfed60000UL
 #define IOP13XX_PCIX_LOWER_IO_BA      0x0UL /* OIOTVR */
 #define IOP13XX_PCIX_IO_BUS_OFFSET    0x1000UL
-#define IOP13XX_PCIX_UPPER_IO_PA      (IOP13XX_PCIX_LOWER_IO_PA +\
-                                       IOP13XX_PCIX_IO_WINDOW_SIZE - 1)
-#define IOP13XX_PCIX_UPPER_IO_VA      (IOP13XX_PCIX_LOWER_IO_VA +\
+#define IOP13XX_PCIX_UPPER_IO_BA      (IOP13XX_PCIX_LOWER_IO_BA +\
                                        IOP13XX_PCIX_IO_WINDOW_SIZE - 1)
 #define IOP13XX_PCIX_IO_PHYS_TO_VIRT(addr) (u32) ((u32) addr -\
                                            (IOP13XX_PCIX_LOWER_IO_PA\
@@ -108,10 +106,6 @@ extern unsigned long get_iop_tick_rate(void);
 #define IOP13XX_PCIE_LOWER_IO_VA         0xfed70000UL
 #define IOP13XX_PCIE_LOWER_IO_BA         0x0UL  /* OIOTVR */
 #define IOP13XX_PCIE_IO_BUS_OFFSET       0x1000UL
-#define IOP13XX_PCIE_UPPER_IO_PA         (IOP13XX_PCIE_LOWER_IO_PA +\
-                                         IOP13XX_PCIE_IO_WINDOW_SIZE - 1)
-#define IOP13XX_PCIE_UPPER_IO_VA         (IOP13XX_PCIE_LOWER_IO_VA +\
-                                         IOP13XX_PCIE_IO_WINDOW_SIZE - 1)
 #define IOP13XX_PCIE_UPPER_IO_BA         (IOP13XX_PCIE_LOWER_IO_BA +\
                                          IOP13XX_PCIE_IO_WINDOW_SIZE - 1)
 #define IOP13XX_PCIE_IO_PHYS_TO_VIRT(addr) (u32) ((u32) addr -\