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Commit c334bc15 authored by Rob Herring's avatar Rob Herring
Browse files

ARM: make mach/io.h include optional 



Add a kconfig option NEED_MACH_IO_H to conditionally include mach/io.h.

Basing this on CONFIG_PCI and CONFIG_ISA doesn't quite work. Most ISA
platforms don't need mach/io.h, but ebsa110 does. Most PCI platforms need
mach/io.h for now, but ks8695 doesn't which means i/o accesses are broken.

Signed-off-by: default avatarRob Herring <rob.herring@calxeda.com>
Cc: Russell King <linux@arm.linux.org.uk>
Acked-by: default avatarH Hartley Sweeten <hsweeten@visionengravers.com>
Acked-by: default avatarNicolas Pitre <nico@linaro.org>
parent 41e32c90

arch/arm/Kconfig

+23 −0
Original line number Diff line number Diff line
@@ -217,6 +217,13 @@ config ARM_PATCH_PHYS_VIRT 
	  this feature (eg, building a kernel for a single machine) and

	  you need to shrink the kernel to the minimal size.



config NEED_MACH_IO_H

	bool

	help

	  Select this when mach/io.h is required to provide special

	  definitions for this platform.  The need for mach/io.h should

	  be avoided when possible.



config NEED_MACH_MEMORY_H

	bool

	help
@@ -268,6 +275,7 @@ config ARCH_INTEGRATOR 
	select GENERIC_CLOCKEVENTS

	select PLAT_VERSATILE

	select PLAT_VERSATILE_FPGA_IRQ

	select NEED_MACH_IO_H

	select NEED_MACH_MEMORY_H

	help

	  Support for ARM's Integrator platform.
@@ -403,6 +411,7 @@ config ARCH_EBSA110 
	select ISA

	select NO_IOPORT

	select ARCH_USES_GETTIMEOFFSET

	select NEED_MACH_IO_H

	select NEED_MACH_MEMORY_H

	help

	  This is an evaluation board for the StrongARM processor available
@@ -429,6 +438,7 @@ config ARCH_FOOTBRIDGE 
	select FOOTBRIDGE

	select GENERIC_CLOCKEVENTS

	select HAVE_IDE

	select NEED_MACH_IO_H

	select NEED_MACH_MEMORY_H

	help

	  Support for systems based on the DC21285 companion chip
@@ -481,6 +491,7 @@ config ARCH_IOP13XX 
	select PCI

	select ARCH_SUPPORTS_MSI

	select VMSPLIT_1G

	select NEED_MACH_IO_H

	select NEED_MACH_MEMORY_H

	select NEED_RET_TO_USER

	help
@@ -490,6 +501,7 @@ config ARCH_IOP32X 
	bool "IOP32x-based"

	depends on MMU

	select CPU_XSCALE

	select NEED_MACH_IO_H

	select NEED_RET_TO_USER

	select PLAT_IOP

	select PCI
@@ -502,6 +514,7 @@ config ARCH_IOP33X 
	bool "IOP33x-based"

	depends on MMU

	select CPU_XSCALE

	select NEED_MACH_IO_H

	select NEED_RET_TO_USER

	select PLAT_IOP

	select PCI
@@ -515,6 +528,7 @@ config ARCH_IXP23XX 
	select CPU_XSC3

 	select PCI

	select ARCH_USES_GETTIMEOFFSET

	select NEED_MACH_IO_H

	select NEED_MACH_MEMORY_H

	help

	  Support for Intel's IXP23xx (XScale) family of processors.
@@ -525,6 +539,7 @@ config ARCH_IXP2000 
	select CPU_XSCALE

	select PCI

	select ARCH_USES_GETTIMEOFFSET

	select NEED_MACH_IO_H

	select NEED_MACH_MEMORY_H

	help

	  Support for Intel's IXP2400/2800 (XScale) family of processors.
@@ -538,6 +553,7 @@ config ARCH_IXP4XX 
	select GENERIC_CLOCKEVENTS

	select HAVE_SCHED_CLOCK

	select MIGHT_HAVE_PCI

	select NEED_MACH_IO_H

	select DMABOUNCE if PCI

	help

	  Support for Intel's IXP4XX (XScale) family of processors.
@@ -548,6 +564,7 @@ config ARCH_DOVE 
	select PCI

	select ARCH_REQUIRE_GPIOLIB

	select GENERIC_CLOCKEVENTS

	select NEED_MACH_IO_H

	select PLAT_ORION

	help

	  Support for the Marvell Dove SoC 88AP510
@@ -558,6 +575,7 @@ config ARCH_KIRKWOOD 
	select PCI

	select ARCH_REQUIRE_GPIOLIB

	select GENERIC_CLOCKEVENTS

	select NEED_MACH_IO_H

	select PLAT_ORION

	help

	  Support for the following Marvell Kirkwood series SoCs:
@@ -582,6 +600,7 @@ config ARCH_MV78XX0 
	select PCI

	select ARCH_REQUIRE_GPIOLIB

	select GENERIC_CLOCKEVENTS

	select NEED_MACH_IO_H

	select PLAT_ORION

	help

	  Support for the following Marvell MV78xx0 series SoCs:
@@ -651,6 +670,7 @@ config ARCH_TEGRA 
	select HAVE_SCHED_CLOCK

	select HAVE_SMP

	select MIGHT_HAVE_CACHE_L2X0

	select NEED_MACH_IO_H if PCI

	select ARCH_HAS_CPUFREQ

	help

	  This enables support for NVIDIA Tegra based systems (Tegra APX,
@@ -745,6 +765,7 @@ config ARCH_RPC 
	select ARCH_SPARSEMEM_ENABLE

	select ARCH_USES_GETTIMEOFFSET

	select HAVE_IDE

	select NEED_MACH_IO_H

	select NEED_MACH_MEMORY_H

	help

	  On the Acorn Risc-PC, Linux can support the internal IDE disk and
@@ -777,6 +798,7 @@ config ARCH_S3C2410 
	select CLKDEV_LOOKUP

	select ARCH_USES_GETTIMEOFFSET

	select HAVE_S3C2410_I2C if I2C

	select NEED_MACH_IO_H

	help

	  Samsung S3C2410X CPU based systems, such as the Simtec Electronics

	  BAST (<http://www.simtec.co.uk/products/EB110ITX/>), the IPAQ 1940 or
@@ -883,6 +905,7 @@ config ARCH_SHARK 
	select PCI

	select ARCH_USES_GETTIMEOFFSET

	select NEED_MACH_MEMORY_H

	select NEED_MACH_IO_H

	help

	  Support for the StrongARM based Digital DNARD machine, also known

	  as "Shark" (<http://www.shark-linux.de/shark.html>).

arch/arm/include/asm/io.h

+5 −0
Original line number Diff line number Diff line
@@ -114,7 +114,12 @@ static inline void __iomem *__typesafe_io(unsigned long addr) 
/*

 * Now, pick up the machine-defined IO definitions

 */

#ifdef CONFIG_NEED_MACH_IO_H

#include <mach/io.h>

#else

#define __io(a)		({ (void)(a); __typesafe_io(0); })

#define __mem_pci(a)	(a)

#endif



/*

 * This is the limit of PC card/PCI/ISA IO space, which is by default