1 /* $NetBSD: biospci.c,v 1.5 2008/12/14 17:03:43 christos 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 * 16 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR 17 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 18 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 19 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, 20 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 21 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 22 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 23 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 24 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF 25 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 26 * 27 */ 28 29 /* 30 * basic PCI functions for libsa needs lowlevel parts from bios_pci.S 31 */ 32 33 #include <lib/libsa/stand.h> 34 35 #include "pcivar.h" 36 37 extern int pcibios_present(int *); 38 extern int pcibios_finddev(int, int, int, unsigned int *); 39 extern int pcibios_cfgread(unsigned int, int, int *); 40 extern int pcibios_cfgwrite(unsigned int, int, int); 41 42 #define PCISIG ('P' | ('C' << 8) | ('I' << 16) | (' ' << 24)) 43 44 int 45 pcicheck(void) 46 { 47 int ret, sig; 48 49 ret = pcibios_present(&sig); 50 51 if ((ret & 0xff00) || (sig != PCISIG)) 52 return -1; 53 54 return 0; 55 } 56 57 int 58 pcifinddev(int vid, int did, pcihdl_t *handle) 59 { 60 int ret; 61 62 *handle = 0; 63 64 ret = pcibios_finddev(vid, did, 0, handle); 65 66 if (ret) 67 return -1; 68 69 return 0; 70 } 71 72 int 73 pcicfgread(pcihdl_t *handle, int off, int *val) 74 { 75 int ret; 76 77 ret = pcibios_cfgread(*handle, off, val); 78 79 if (ret) 80 return -1; 81 82 return 0; 83 } 84 85 int 86 pcicfgwrite(pcihdl_t *handle, int off, int val) 87 { 88 int ret; 89 90 ret = pcibios_cfgwrite(*handle, off, val); 91 92 if (ret) 93 return -1; 94 95 return 0; 96 } 97