1 /* $NetBSD: pci_verbose.c,v 1.7 2010/07/25 14:14:25 pgoyette Exp $ */ 2 3 /* 4 * Copyright (c) 1997 Zubin D. Dittia. All rights reserved. 5 * Copyright (c) 1995, 1996, 1998, 2000 6 * Christopher G. Demetriou. All rights reserved. 7 * Copyright (c) 1994 Charles M. Hannum. All rights reserved. 8 * 9 * Redistribution and use in source and binary forms, with or without 10 * modification, are permitted provided that the following conditions 11 * are met: 12 * 1. Redistributions of source code must retain the above copyright 13 * notice, this list of conditions and the following disclaimer. 14 * 2. Redistributions in binary form must reproduce the above copyright 15 * notice, this list of conditions and the following disclaimer in the 16 * documentation and/or other materials provided with the distribution. 17 * 3. All advertising materials mentioning features or use of this software 18 * must display the following acknowledgement: 19 * This product includes software developed by Charles M. Hannum. 20 * 4. The name of the author may not be used to endorse or promote products 21 * derived from this software without specific prior written permission. 22 * 23 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR 24 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 25 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 26 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, 27 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 28 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 29 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 30 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 31 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF 32 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 33 */ 34 35 /* 36 * PCI autoconfiguration support functions. 37 * 38 * Note: This file is also built into a userland library (libpci). 39 * Pay attention to this when you make modifications. 40 */ 41 42 #include <sys/cdefs.h> 43 __KERNEL_RCSID(0, "$NetBSD: pci_verbose.c,v 1.7 2010/07/25 14:14:25 pgoyette Exp $"); 44 45 #include <sys/param.h> 46 47 #ifdef _KERNEL 48 #include <sys/module.h> 49 #else 50 #include <pci.h> 51 #endif 52 53 #include <dev/pci/pcireg.h> 54 #include <dev/pci/pcidevs.h> 55 #ifdef _KERNEL 56 #include <dev/pci/pci_verbose.h> 57 #endif 58 59 /* 60 * Descriptions of of known vendors and devices ("products"). 61 */ 62 63 #include <dev/pci/pcidevs_data.h> 64 65 #ifndef _KERNEL 66 #include <string.h> 67 #endif 68 69 #ifdef _KERNEL 70 static int pciverbose_modcmd(modcmd_t, void *); 71 72 MODULE(MODULE_CLASS_MISC, pciverbose, NULL); 73 74 static int 75 pciverbose_modcmd(modcmd_t cmd, void *arg) 76 { 77 static const char *(*saved_findvendor)(pcireg_t); 78 static const char *(*saved_findproduct)(pcireg_t); 79 static const char *saved_unmatched; 80 81 switch (cmd) { 82 case MODULE_CMD_INIT: 83 saved_findvendor = pci_findvendor; 84 saved_findproduct = pci_findproduct; 85 saved_unmatched = pci_unmatched; 86 pci_findvendor = pci_findvendor_real; 87 pci_findproduct = pci_findproduct_real; 88 pci_unmatched = "unmatched "; 89 pciverbose_loaded = 1; 90 return 0; 91 case MODULE_CMD_FINI: 92 pci_findvendor = saved_findvendor; 93 pci_findproduct = saved_findproduct; 94 pci_unmatched = saved_unmatched; 95 pciverbose_loaded = 0; 96 return 0; 97 default: 98 return ENOTTY; 99 } 100 } 101 #endif /* KERNEL */ 102 103 static const char * 104 pci_untokenstring(const uint16_t *token, char *buf, size_t len) 105 { 106 char *cp = buf; 107 108 buf[0] = '\0'; 109 for (; *token != 0; token++) { 110 cp = buf + strlcat(buf, pci_words + *token, len - 2); 111 cp[0] = ' '; 112 cp[1] = '\0'; 113 } 114 *cp = '\0'; 115 return cp != buf ? buf : NULL; 116 } 117 118 const char * 119 pci_findvendor_real(pcireg_t id_reg) 120 { 121 static char buf[256]; 122 pci_vendor_id_t vendor = PCI_VENDOR(id_reg); 123 size_t n; 124 125 for (n = 0; n < __arraycount(pci_vendors); n++) { 126 if (pci_vendors[n] == vendor) 127 return pci_untokenstring(&pci_vendors[n+1], buf, 128 sizeof(buf)); 129 130 /* Skip Tokens */ 131 n++; 132 while (pci_vendors[n] != 0 && n < __arraycount(pci_vendors)) 133 n++; 134 } 135 return (NULL); 136 } 137 138 const char * 139 pci_findproduct_real(pcireg_t id_reg) 140 { 141 static char buf[256]; 142 pci_vendor_id_t vendor = PCI_VENDOR(id_reg); 143 pci_product_id_t product = PCI_PRODUCT(id_reg); 144 size_t n; 145 146 for (n = 0; n < __arraycount(pci_products); n++) { 147 if (pci_products[n] == vendor && pci_products[n+1] == product) 148 return pci_untokenstring(&pci_products[n+2], buf, 149 sizeof(buf)); 150 151 /* Skip Tokens */ 152 n += 2; 153 while (pci_products[n] != 0 && n < __arraycount(pci_products)) 154 n++; 155 } 156 return (NULL); 157 } 158 159