freebsd-skq/lib/libio/io.h
dfr 9d72935e72 Add a simple library for accessing i/o ports and memory on the alpha.
This is only intended for use by the X server.
1998-12-12 18:05:06 +00:00

49 lines
2.0 KiB
C

/*-
* Copyright (c) 1998 Doug Rabson
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*
* $Id$
*/
struct io_ops {
int (*ioperm)(u_int32_t, u_int32_t, int);
u_int8_t (*inb)(u_int32_t);
u_int16_t (*inw)(u_int32_t);
u_int32_t (*inl)(u_int32_t);
void (*outb)(u_int32_t, u_int8_t);
void (*outw)(u_int32_t, u_int16_t);
void (*outl)(u_int32_t, u_int32_t);
void * (*map_memory)(u_int32_t, u_int32_t);
void (*unmap_memory)(void *, u_int32_t);
u_int8_t (*readb)(void *, u_int32_t);
u_int16_t (*readw)(void *, u_int32_t);
u_int32_t (*readl)(void *, u_int32_t);
void (*writeb)(void *, u_int32_t, u_int8_t);
void (*writew)(void *, u_int32_t, u_int16_t);
void (*writel)(void *, u_int32_t, u_int32_t);
};
extern struct io_ops swiz_io_ops;
extern struct io_ops bwx_io_ops;