227 lines
4.8 KiB
C
227 lines
4.8 KiB
C
/* $NetBSD: pio.h,v 1.1 1999/09/13 10:31:20 itojun Exp $ */
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/*
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* Copyright (c) 1993, 1995 Charles M. Hannum. All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. All advertising materials mentioning features or use of this software
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* must display the following acknowledgement:
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* This product includes software developed by Charles M. Hannum.
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* 4. The name of the author may not be used to endorse or promote products
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* derived from this software without specific prior written permission
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
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* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
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* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
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* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
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* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
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* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
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* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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#ifndef _SH3_PIO_H_
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#define _SH3_PIO_H_
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/*
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* Functions to provide access to i386 programmed I/O instructions.
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*
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* The in[bwl]() and out[bwl]() functions are split into two varieties: one to
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* use a small, constant, 8-bit port number, and another to use a large or
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* variable port number. The former can be compiled as a smaller instruction.
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*/
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#ifdef __OPTIMIZE__
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#define __use_immediate_port(port) \
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(__builtin_constant_p((port)) && (port) < 0x100)
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#else
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#define __use_immediate_port(port) 0
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#endif
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#define inb(port) \
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(__use_immediate_port(port) ? __inbc(port) : __inb(port))
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static __inline u_int8_t
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__inbc(int port)
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{
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u_int8_t data;
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data = *(volatile u_int8 *)port;
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return data;
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}
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static __inline u_int8_t
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__inb(int port)
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{
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u_int8_t data;
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data = *(volatile u_int8_t *)port;
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return data;
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}
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static __inline void
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insb(int port, void *addr, int cnt)
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{
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while (cnt--) {
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*(u_int8_t *)addr++ = *(volatile u_int8_t *)port;
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}
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}
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#define inw(port) \
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(__use_immediate_port(port) ? __inwc(port) : __inw(port))
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static __inline u_int16_t
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__inwc(int port)
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{
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u_int16_t data;
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data = *(volatile u_int16_t *)port;
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return data;
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}
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static __inline u_int16_t
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__inw(int port)
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{
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u_int16_t data;
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data = *(volatile u_int16_t *)port;
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return data;
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}
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static __inline void
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insw(int port, void *addr, int cnt)
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{
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u_int16_t *p = addr;
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while (cnt--) {
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*p++ = *(volatile u_int16_t *)port;
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}
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}
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#define inl(port) \
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(__use_immediate_port(port) ? __inlc(port) : __inl(port))
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static __inline u_int32_t
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__inlc(int port)
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{
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u_int32_t data;
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data = *(volatile u_int32_t *)port;
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return data;
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}
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static __inline u_int32_t
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__inl(int port)
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{
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u_int32_t data;
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data = *(volatile u_int32_t *)port;
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return data;
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}
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static __inline void
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insl(int port, void *addr, int cnt)
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{
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u_int32_t *p = addr;
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while (cnt--) {
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*p++ = *(volatile u_int32_t *)port;
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}
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}
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#define outb(port, data) \
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(__use_immediate_port(port) ? __outbc(port, data) : __outb(port, data))
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static __inline void
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__outbc(int port, u_int8_t data)
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{
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*(volatile u_int8_t *)port = data;
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}
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static __inline void
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__outb(int port, u_int8_t data)
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{
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*(volatile u_int8_t *)port = data;
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}
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static __inline void
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outsb(int port, void *addr, int cnt)
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{
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u_int8_t *p = addr;
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while (cnt--) {
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*(volatile u_int8_t *)port = *p++;
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}
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}
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#define outw(port, data) \
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(__use_immediate_port(port) ? __outwc(port, data) : __outw(port, data))
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static __inline void
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__outwc(int port, u_int16_t data)
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{
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*(volatile u_int16_t *)port = data;
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}
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static __inline void
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__outw(int port, u_int16_t data)
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{
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*(volatile u_int16_t *)port = data;
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}
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static __inline void
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outsw(int port, void *addr, int cnt)
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{
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u_int16_t *p = addr;
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while (cnt--) {
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*(volatile u_int16_t *)port = *p++;
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}
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}
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#define outl(port, data) \
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(__use_immediate_port(port) ? __outlc(port, data) : __outl(port, data))
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static __inline void
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__outlc(int port, u_int32_t data)
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{
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*(volatile u_int32_t *)port = data;
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}
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static __inline void
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__outl(int port, u_int32_t data)
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{
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*(volatile u_int32_t *)port = data;
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}
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static __inline void
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outsl(int port, void *addr, int cnt)
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{
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u_int32_t *p = addr;
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while (cnt--) {
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*(volatile u_int32_t *)port = *p++;
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}
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}
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#endif /* _SH3_PIO_H_ */
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