Commit b5e12229 authored by Andrew Lunn's avatar Andrew Lunn Committed by Olof Johansson

ARM: Orion5x - Restore parts of io.h, with rework

Commit 4d5fc58d (ARM: remove bunch of
now unused mach/io.h files) removed the orion5x io.h. Unfortunately,
this is still needed for the definition of IO_SPACE_LIMIT which
overrides the default 64K. All Orion based systems have 1Mbyte of IO
space per PCI[e] bus, and try to request_resource() this size. Orion5x
has two such PCI buses.

It is likely that the original, removed version, was broken. This
version might be less broken. However, it has not been tested on
hardware with a PCI card, let alone hardware with a PCI card with IO
capabilities.
Signed-off-by: default avatarAndrew Lunn <andrew@lunn.ch>
Acked-by: default avatarRob Herring <rob.herring@calxeda.com>
Signed-off-by: default avatarOlof Johansson <olof@lixom.net>
parent a34a3b72
......@@ -589,6 +589,7 @@ config ARCH_ORION5X
select PCI
select ARCH_REQUIRE_GPIOLIB
select GENERIC_CLOCKEVENTS
select NEED_MACH_IO_H
select PLAT_ORION
help
Support for the following Marvell Orion 5x series SoCs:
......
/*
* arch/arm/mach-orion5x/include/mach/io.h
*
* This file is licensed under the terms of the GNU General Public
* License version 2. This program is licensed "as is" without any
* warranty of any kind, whether express or implied.
*/
#ifndef __ASM_ARCH_IO_H
#define __ASM_ARCH_IO_H
#include <mach/orion5x.h>
#include <asm/sizes.h>
#define IO_SPACE_LIMIT SZ_2M
static inline void __iomem *__io(unsigned long addr)
{
return (void __iomem *)(addr + ORION5X_PCIE_IO_VIRT_BASE);
}
#define __io(a) __io(a)
#endif
Markdown is supported
0% or .
You are about to add 0 people to the discussion. Proceed with caution.
Finish editing this message first!
Please register or to comment