| Russell King | a09e64f | 2008-08-05 16:14:15 +0100 | [diff] [blame] | 1 | /* |
| 2 | * arch/arm/mach-rpc/include/mach/io.h |
| 3 | * |
| 4 | * Copyright (C) 1997 Russell King |
| 5 | * |
| 6 | * This program is free software; you can redistribute it and/or modify |
| 7 | * it under the terms of the GNU General Public License version 2 as |
| 8 | * published by the Free Software Foundation. |
| 9 | * |
| 10 | * Modifications: |
| 11 | * 06-Dec-1997 RMK Created. |
| 12 | */ |
| 13 | #ifndef __ASM_ARM_ARCH_IO_H |
| 14 | #define __ASM_ARM_ARCH_IO_H |
| 15 | |
| 16 | #include <mach/hardware.h> |
| 17 | |
| Russell King | 0d26449 | 2011-07-07 14:43:11 +0100 | [diff] [blame] | 18 | #define IO_SPACE_LIMIT 0xffff |
| Russell King | a09e64f | 2008-08-05 16:14:15 +0100 | [diff] [blame] | 19 | |
| 20 | /* |
| Russell King | 0d26449 | 2011-07-07 14:43:11 +0100 | [diff] [blame] | 21 | * We need PC style IO addressing for: |
| 22 | * - floppy (at 0x3f2,0x3f4,0x3f5,0x3f7) |
| 23 | * - parport (at 0x278-0x27a, 0x27b-0x27f, 0x778-0x77a) |
| 24 | * - 8250 serial (only for compile) |
| Russell King | a09e64f | 2008-08-05 16:14:15 +0100 | [diff] [blame] | 25 | * |
| Russell King | 0d26449 | 2011-07-07 14:43:11 +0100 | [diff] [blame] | 26 | * These peripherals are found in an area of MMIO which looks very much |
| 27 | * like an ISA bus, but with registers at the low byte of each word. |
| Russell King | a09e64f | 2008-08-05 16:14:15 +0100 | [diff] [blame] | 28 | */ |
| Russell King | 0d26449 | 2011-07-07 14:43:11 +0100 | [diff] [blame] | 29 | #define __io(a) (PCIO_BASE + ((a) << 2)) |
| Russell King | a09e64f | 2008-08-05 16:14:15 +0100 | [diff] [blame] | 30 | |
| Russell King | a09e64f | 2008-08-05 16:14:15 +0100 | [diff] [blame] | 31 | #endif |