29 lines
672 B
C
29 lines
672 B
C
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/* SPDX-License-Identifier: GPL-2.0-only */
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/*
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* arch/arm/mach-rpc/include/mach/io.h
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*
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* Copyright (C) 1997 Russell King
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*
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* Modifications:
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* 06-Dec-1997 RMK Created.
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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 <mach/hardware.h>
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#define IO_SPACE_LIMIT 0xffff
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/*
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* We need PC style IO addressing for:
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* - floppy (at 0x3f2,0x3f4,0x3f5,0x3f7)
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* - parport (at 0x278-0x27a, 0x27b-0x27f, 0x778-0x77a)
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* - 8250 serial (only for compile)
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*
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* These peripherals are found in an area of MMIO which looks very much
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* like an ISA bus, but with registers at the low byte of each word.
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*/
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#define __io(a) (PCIO_BASE + ((a) << 2))
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#endif
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