mirror of https://gitee.com/openkylin/linux.git
57 lines
1.3 KiB
C
57 lines
1.3 KiB
C
/*
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* linux/include/asm-arm/arch-shark/io.h
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*
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* by Alexander Schulz
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*
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* derived from:
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* linux/include/asm-arm/arch-ebsa110/io.h
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* Copyright (C) 1997,1998 Russell King
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*/
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#ifndef __ASM_ARM_ARCH_IO_H
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#define __ASM_ARM_ARCH_IO_H
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#include <asm/hardware.h>
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#define IO_SPACE_LIMIT 0xffffffff
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/*
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* We use two different types of addressing - PC style addresses, and ARM
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* addresses. PC style accesses the PC hardware with the normal PC IO
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* addresses, eg 0x3f8 for serial#1. ARM addresses are 0x80000000+
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* and are translated to the start of IO.
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*/
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#define __PORT_PCIO(x) (!((x) & 0x80000000))
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#define __io(a) ((void __iomem *)(PCIO_BASE + (a)))
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static inline unsigned int __ioaddr (unsigned int port) \
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{ \
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if (__PORT_PCIO(port)) \
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return (unsigned int)(PCIO_BASE + (port)); \
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else \
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return (unsigned int)(IO_BASE + (port)); \
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}
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#define __mem_pci(addr) (addr)
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/*
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* Translated address IO functions
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*
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* IO address has already been translated to a virtual address
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*/
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#define outb_t(v,p) \
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(*(volatile unsigned char *)(p) = (v))
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#define inb_t(p) \
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(*(volatile unsigned char *)(p))
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#define outl_t(v,p) \
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(*(volatile unsigned long *)(p) = (v))
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#define inl_t(p) \
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(*(volatile unsigned long *)(p))
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#endif
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