root / prex-0.9.0 / bsp / drv / ppc / include / busio.h @ 03e9c04a
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| 1 | 03e9c04a | Brad Neuman | /*
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| 2 | * Copyright (c) 2009, Kohsuke Ohtani
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| 3 | * All rights reserved.
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| 4 | *
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| 5 | * Redistribution and use in source and binary forms, with or without
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| 6 | * modification, are permitted provided that the following conditions
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| 7 | * are met:
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| 8 | * 1. Redistributions of source code must retain the above copyright
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| 9 | * notice, this list of conditions and the following disclaimer.
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| 10 | * 2. Redistributions in binary form must reproduce the above copyright
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| 11 | * notice, this list of conditions and the following disclaimer in the
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| 12 | * documentation and/or other materials provided with the distribution.
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| 13 | * 3. Neither the name of the author nor the names of any co-contributors
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| 14 | * may be used to endorse or promote products derived from this software
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| 15 | * without specific prior written permission.
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| 16 | *
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| 17 | * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
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| 18 | * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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| 19 | * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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| 20 | * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
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| 21 | * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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| 22 | * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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| 23 | * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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| 24 | * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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| 25 | * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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| 26 | * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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| 27 | * SUCH DAMAGE.
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| 28 | */
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| 29 | |||
| 30 | /*
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| 31 | * busio.h - BUS i/o operations
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| 32 | */
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| 33 | |||
| 34 | #ifndef _ARM_BUSIO_H
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| 35 | #define _ARM_BUSIO_H
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| 36 | |||
| 37 | #include <sys/cdefs.h> |
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| 38 | #include <sys/types.h> |
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| 39 | |||
| 40 | /* temp!! */
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| 41 | #define IOBASE 0x80000000 |
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| 42 | |||
| 43 | #define bus_read_8(addr) (*((volatile uint8_t *)(IOBASE+addr))) |
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| 44 | #define bus_read_16(addr) (*((volatile uint16_t *)(IOBASE+addr))) |
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| 45 | #define bus_read_32(addr) (*((volatile uint32_t *)(IOBASE+addr))) |
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| 46 | |||
| 47 | #define bus_write_8(addr, val) (*((volatile uint8_t *)(IOBASE+addr)) = (val)) |
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| 48 | #define bus_write_16(addr, val) (*((volatile uint16_t *)(IOBASE+addr)) = (val)) |
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| 49 | #define bus_write_32(addr, val) (*((volatile uint32_t *)(IOBASE+addr)) = (val)) |
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| 50 | |||
| 51 | #endif /* !_ARM_BUSIO_H */ |