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/* $OpenBSD: io.c,v 1.5 2014/04/18 15:09:52 guenther Exp $ */
/*-
* 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.
*/
#include <sys/param.h>
#include <sys/types.h>
#include <sys/sysctl.h>
#include <machine/cpu.h>
#include <err.h>
#include "io.h"
static struct io_ops *ops;
int
ioperm(unsigned long from, unsigned long num, int on)
{
int error;
int bwx;
size_t len = sizeof(bwx);
int mib[3];
mib[0] = CTL_MACHDEP;
mib[1] = CPU_CHIPSET;
mib[2] = CPU_CHIPSET_BWX;
if ((error = sysctl(mib, 3, &bwx, &len, NULL, 0)) < 0)
return error;
if (bwx)
ops = &bwx_io_ops;
else
#ifdef notyet
ops = &swiz_io_ops;
#else
errx(1, "libio is only available on bwx capable machines");
#endif
return ops->ioperm(from, num, on);
}
u_int8_t
inb(u_int32_t port)
{
return ops->inb(port);
}
u_int16_t
inw(u_int32_t port)
{
return ops->inw(port);
}
u_int32_t
inl(u_int32_t port)
{
return ops->inl(port);
}
void
outb(u_int32_t port, u_int8_t val)
{
ops->outb(port, val);
}
void
outw(u_int32_t port, u_int16_t val)
{
ops->outw(port, val);
}
void
outl(u_int32_t port, u_int32_t val)
{
ops->outl(port, val);
}
void *
map_memory(u_int32_t address, u_int32_t size)
{
return ops->map_memory(address, size);
}
void
unmap_memory(void *handle, u_int32_t size)
{
ops->unmap_memory(handle, size);
}
u_int8_t
readb(void *handle, u_int32_t offset)
{
return ops->readb(handle, offset);
}
u_int16_t
readw(void *handle, u_int32_t offset)
{
return ops->readw(handle, offset);
}
u_int32_t
readl(void *handle, u_int32_t offset)
{
return ops->readl(handle, offset);
}
void
writeb(void *handle, u_int32_t offset, u_int8_t val)
{
ops->writeb(handle, offset, val);
__asm__ volatile ("mb");
}
void
writew(void *handle, u_int32_t offset, u_int16_t val)
{
ops->writew(handle, offset, val);
__asm__ volatile ("mb");
}
void
writel(void *handle, u_int32_t offset, u_int32_t val)
{
ops->writel(handle, offset, val);
__asm__ volatile ("mb");
}
void
writeb_nb(void *handle, u_int32_t offset, u_int8_t val)
{
ops->writeb(handle, offset, val);
}
void
writew_nb(void *handle, u_int32_t offset, u_int16_t val)
{
ops->writew(handle, offset, val);
}
void
writel_nb(void *handle, u_int32_t offset, u_int32_t val)
{
ops->writel(handle, offset, val);
}
u_int64_t
dense_base(void)
{
static u_int64_t base = 0;
if (base == 0) {
size_t len = sizeof(base);
int error;
int mib[3];
mib[0] = CTL_MACHDEP;
mib[1] = CPU_CHIPSET;
mib[2] = CPU_CHIPSET_DENSE;
if ((error = sysctl(mib, 3, &base, &len, NULL, 0)) < 0)
err(1, "machdep.chipset.dense_base");
}
return base;
}
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