forked from Minki/linux
7fca0aa489
Including asm/hardware.h into asm/io.h can cause #define clashes between platform specific definitions and driver local definitions. Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
77 lines
2.2 KiB
C
77 lines
2.2 KiB
C
/*
|
|
* linux/include/asm-arm/arch-l7200/io.h
|
|
*
|
|
* Copyright (C) 2000 Steve Hill (sjhill@cotw.com)
|
|
*
|
|
* Changelog:
|
|
* 03-21-2000 SJH Created from linux/include/asm-arm/arch-nexuspci/io.h
|
|
* 08-31-2000 SJH Added in IO functions necessary for new drivers
|
|
*/
|
|
#ifndef __ASM_ARM_ARCH_IO_H
|
|
#define __ASM_ARM_ARCH_IO_H
|
|
|
|
#include <asm/hardware.h>
|
|
|
|
#define IO_SPACE_LIMIT 0xffffffff
|
|
|
|
/*
|
|
* There are not real ISA nor PCI buses, so we fake it.
|
|
*/
|
|
#define __io_pci(a) ((void __iomem *)(PCIO_BASE + (a)))
|
|
#define __mem_pci(a) (a)
|
|
#define __mem_isa(a) (a)
|
|
|
|
#define __ioaddr(p) __io_pci(p)
|
|
|
|
/*
|
|
* Generic virtual read/write
|
|
*/
|
|
#define __arch_getb(a) (*(volatile unsigned char *)(a))
|
|
#define __arch_getl(a) (*(volatile unsigned int *)(a))
|
|
|
|
static inline unsigned int __arch_getw(unsigned long a)
|
|
{
|
|
unsigned int value;
|
|
__asm__ __volatile__("ldr%?h %0, [%1, #0] @ getw"
|
|
: "=&r" (value)
|
|
: "r" (a));
|
|
return value;
|
|
}
|
|
|
|
#define __arch_putb(v,a) (*(volatile unsigned char *)(a) = (v))
|
|
#define __arch_putl(v,a) (*(volatile unsigned int *)(a) = (v))
|
|
|
|
static inline void __arch_putw(unsigned int value, unsigned long a)
|
|
{
|
|
__asm__ __volatile__("str%?h %0, [%1, #0] @ putw"
|
|
: : "r" (value), "r" (a));
|
|
}
|
|
|
|
/*
|
|
* Translated address IO functions
|
|
*
|
|
* IO address has already been translated to a virtual address
|
|
*/
|
|
#define outb_t(v,p) (*(volatile unsigned char *)(p) = (v))
|
|
#define inb_t(p) (*(volatile unsigned char *)(p))
|
|
#define outw_t(v,p) (*(volatile unsigned int *)(p) = (v))
|
|
#define inw_t(p) (*(volatile unsigned int *)(p))
|
|
#define outl_t(v,p) (*(volatile unsigned long *)(p) = (v))
|
|
#define inl_t(p) (*(volatile unsigned long *)(p))
|
|
|
|
/*
|
|
* FIXME - These are to allow for linking. On all the other
|
|
* ARM platforms, the entire IO space is contiguous.
|
|
* The 7200 has three separate IO spaces. The below
|
|
* macros will eventually become more involved. Use
|
|
* with caution and don't be surprised by kernel oopses!!!
|
|
*/
|
|
#define inb(p) inb_t(p)
|
|
#define inw(p) inw_t(p)
|
|
#define inl(p) inl_t(p)
|
|
#define outb(v,p) outb_t(v,p)
|
|
#define outw(v,p) outw_t(v,p)
|
|
#define outl(v,p) outl_t(v,p)
|
|
|
|
#endif
|