97 lines
2.4 KiB
C
97 lines
2.4 KiB
C
/* $NetBSD: biospci.c,v 1.5 2008/12/14 17:03:43 christos Exp $ */
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/*
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* Copyright (c) 1996
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* Matthias Drochner. 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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*
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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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*/
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/*
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* basic PCI functions for libsa needs lowlevel parts from bios_pci.S
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*/
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#include <lib/libsa/stand.h>
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#include "pcivar.h"
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extern int pcibios_present(int *);
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extern int pcibios_finddev(int, int, int, unsigned int *);
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extern int pcibios_cfgread(unsigned int, int, int *);
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extern int pcibios_cfgwrite(unsigned int, int, int);
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#define PCISIG ('P' | ('C' << 8) | ('I' << 16) | (' ' << 24))
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int
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pcicheck(void)
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{
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int ret, sig;
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ret = pcibios_present(&sig);
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if ((ret & 0xff00) || (sig != PCISIG))
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return -1;
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return 0;
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}
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int
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pcifinddev(int vid, int did, pcihdl_t *handle)
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{
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int ret;
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*handle = 0;
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ret = pcibios_finddev(vid, did, 0, handle);
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if (ret)
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return -1;
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return 0;
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}
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int
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pcicfgread(pcihdl_t *handle, int off, int *val)
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{
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int ret;
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ret = pcibios_cfgread(*handle, off, val);
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if (ret)
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return -1;
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return 0;
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}
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int
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pcicfgwrite(pcihdl_t *handle, int off, int val)
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{
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int ret;
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ret = pcibios_cfgwrite(*handle, off, val);
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if (ret)
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return -1;
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return 0;
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}
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