[PATCH] ARM: 2792/1: IXP4xx iomap API implementation

Patch from Deepak Saxena

This patch implements the iomap API for Intel IXP4xx NPU systems.
We need to implement our own version of the API functions b/c of the
PCI hostbridge does not provide the capability to map PCI I/O space
into the CPU's physical memory space. In addition, if a system has
more than 64M of PCI memory mapped BARs, PCI memory must also be
accessed indirectly.  This patch changes the assignment of PCI I/O
resources to fall into to 0x0000:0xffff range so that we can trap
I/O areas in our ioread/iowrite macros.

Signed-off-by: Deepak Saxena
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>

arch/arm/mach-ixp4xx/common-pci.c

@@ -453,8 +453,8 @@ int ixp4xx_setup(int nr, struct pci_sys_data *sys)
 	local_write_config(PCI_COMMAND, 2, PCI_COMMAND_MASTER | PCI_COMMAND_MEMORY);
 
 	res[0].name = "PCI I/O Space";
-	res[0].start = 0x00001000;
-	res[0].end = 0xffff0000;
+	res[0].start = 0x00000000;
+	res[0].end = 0x0000ffff;
 	res[0].flags = IORESOURCE_IO;
 
 	res[1].name = "PCI Memory Space";