137 lines
3.5 KiB
C
137 lines
3.5 KiB
C
/* $NetBSD: lambio.c,v 1.4 2010/10/12 22:28:54 joerg Exp $ */
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/*
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* Copyright (C) 2001 WIDE Project. 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. Neither the name of the project nor the names of its contributors
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* may be used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE PROJECT AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE PROJECT OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*/
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#include <sys/types.h>
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#include <sys/socket.h>
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#include <net/if.h>
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#include <net/if_dl.h>
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#include <net/if_ether.h>
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#include <ifaddrs.h>
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#include <string.h>
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#include <machine/sysarch.h>
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#include <machine/pio.h>
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#include "lambio.h"
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#define BASEPORT (0x378)
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/* We get these from libi386.so, but there are no public prototypes. */
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int i386_get_ioperm(u_long *);
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int i386_set_ioperm(u_long *);
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/*
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* These used to be provided by machine/pio.h as inline functions,
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* but that's not true anymore, so use a local copy.
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*/
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static void
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lamb_outb(unsigned port, u_int8_t data)
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{
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asm volatile("outb %0,%w1" : : "a" (data), "d" (port));
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}
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static u_int8_t
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lamb_inb(unsigned port)
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{
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u_int8_t data;
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__asm volatile("inb %w1,%0" : "=a" (data) : "d" (port));
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return data;
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}
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int
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lamb_open()
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{
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unsigned long ioperm[1024 / sizeof(unsigned long) / 8];
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int off, bit;
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int i;
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if (i386_get_ioperm(ioperm) < 0)
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return -1;
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for (i = 0; i < 3; i++) {
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off = (BASEPORT + i);
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bit = off % (sizeof(ioperm[0]) * 8);
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off /= (sizeof(ioperm[0]) * 8);
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ioperm[off] &= ~(1 << bit);
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}
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if (i386_set_ioperm(ioperm) < 0)
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return -1;
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return 0;
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}
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/* returns 1 if shutdown button is pressed */
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int
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lamb_reboot()
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{
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if ((lamb_inb(BASEPORT + 1) & 0x20) == 0)
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return 1;
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else
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return 0;
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}
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void
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lamb_led(on)
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int on;
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{
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lamb_outb(BASEPORT + 2, on ? 8 : 0);
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}
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/*
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* check MAC address against IEEE-registered Wildlab MAC address
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*/
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int
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islamb()
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{
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struct ifaddrs *ifa, *ifap;
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struct sockaddr_dl *sdl;
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const u_int8_t wildlab[] = { 0x00, 0x30, 0xf5 };
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if (getifaddrs(&ifap) < 0)
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return 0;
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for (ifa = ifap; ifa; ifa = ifa->ifa_next) {
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if (ifa->ifa_addr->sa_family != AF_LINK)
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continue;
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sdl = (struct sockaddr_dl *)ifa->ifa_addr;
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if (sdl->sdl_alen != sizeof(struct ether_addr))
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continue;
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if (memcmp(LLADDR(sdl), wildlab, sizeof(wildlab)) != 0)
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continue;
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freeifaddrs(ifap);
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return 1;
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}
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freeifaddrs(ifap);
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return 0;
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}
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