1 /* $NetBSD: biospci.c,v 1.2 1997/03/22 01:48:27 thorpej Exp $ */ 2 3 /* 4 * Copyright (c) 1996 5 * Matthias Drochner. All rights reserved. 6 * 7 * Redistribution and use in source and binary forms, with or without 8 * modification, are permitted provided that the following conditions 9 * are met: 10 * 1. Redistributions of source code must retain the above copyright 11 * notice, this list of conditions and the following disclaimer. 12 * 2. Redistributions in binary form must reproduce the above copyright 13 * notice, this list of conditions and the following disclaimer in the 14 * documentation and/or other materials provided with the distribution. 15 * 3. All advertising materials mentioning features or use of this software 16 * must display the following acknowledgement: 17 * This product includes software developed for the NetBSD Project 18 * by Matthias Drochner. 19 * 4. The name of the author may not be used to endorse or promote products 20 * derived from this software without specific prior written permission. 21 * 22 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR 23 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 24 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 25 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, 26 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 27 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 28 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 29 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 30 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF 31 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 32 * 33 */ 34 35 /* 36 * basic PCI functions for libsa needs lowlevel parts from bios_pci.S 37 */ 38 39 #include <lib/libsa/stand.h> 40 41 #include "pcivar.h" 42 43 extern int pcibios_present __P((int *)); 44 extern int pcibios_finddev __P((int, int, int, unsigned int *)); 45 extern int pcibios_cfgread __P((unsigned int, int, int *)); 46 extern int pcibios_cfgwrite __P((unsigned int, int, int)); 47 48 #define PCISIG ('P' | ('C' << 8) | ('I' << 16) | (' ' << 24)) 49 50 int 51 pcicheck() 52 { 53 int ret, sig; 54 55 ret = pcibios_present(&sig); 56 57 if ((ret & 0xff00) || (sig != PCISIG)) 58 return (-1); 59 60 return (0); 61 } 62 63 int 64 pcifinddev(vid, did, handle) 65 int vid, did; 66 pcihdl_t *handle; 67 { 68 int ret; 69 70 *handle = 0; 71 72 ret = pcibios_finddev(vid, did, 0, handle); 73 74 if (ret) 75 return (-1); 76 77 return (0); 78 } 79 80 int 81 pcicfgread(handle, off, val) 82 pcihdl_t *handle; 83 int off; 84 int *val; 85 { 86 int ret; 87 88 ret = pcibios_cfgread(*handle, off, val); 89 90 if (ret) 91 return (-1); 92 93 return (0); 94 } 95 96 int 97 pcicfgwrite(handle, off, val) 98 pcihdl_t *handle; 99 int off; 100 int val; 101 { 102 int ret; 103 104 ret = pcibios_cfgwrite(*handle, off, val); 105 106 if (ret) 107 return (-1); 108 109 return (0); 110 } 111