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