pci_subr.c revision 1.13
1 /* $NetBSD: pci_subr.c,v 1.13 1996/01/22 21:08:10 cgd Exp $ */ 2 3 /* 4 * Copyright (c) 1995, 1996 Christopher G. Demetriou. All rights reserved. 5 * Copyright (c) 1994 Charles Hannum. 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 by Charles Hannum. 18 * 4. The name of the author may not be used to endorse or promote products 19 * derived from this software without specific prior written permission. 20 * 21 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR 22 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 23 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 24 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, 25 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 26 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 27 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 28 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 29 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF 30 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 31 */ 32 33 /* 34 * PCI autoconfiguration support functions. 35 */ 36 37 #include <sys/param.h> 38 #include <sys/systm.h> 39 #include <sys/device.h> 40 41 #include <dev/pci/pcireg.h> 42 #include <dev/pci/pcivar.h> 43 #ifdef PCIVERBOSE 44 #include <dev/pci/pcidevs.h> 45 #endif 46 47 int 48 pciprint(aux, pci) 49 void *aux; 50 char *pci; 51 { 52 register struct pci_attach_args *pa = aux; 53 54 printf(" bus %d device %d", pa->pa_bus, pa->pa_device); 55 return (UNCONF); 56 } 57 58 int 59 pcisubmatch(parent, match, aux) 60 struct device *parent; 61 void *match, *aux; 62 { 63 struct cfdata *cf = match; 64 struct pci_attach_args *pa = aux; 65 66 if (cf->cf_loc[0] != -1 && cf->cf_loc[0] != pa->pa_bus) 67 return 0; 68 if (cf->cf_loc[1] != -1 && cf->cf_loc[1] != pa->pa_device) 69 return 0; 70 return ((*cf->cf_driver->cd_match)(parent, match, aux)); 71 } 72 73 /* 74 * Try to find and attach the PCI device at the give bus and device number. 75 * Return 1 if successful, 0 if unsuccessful. 76 */ 77 int 78 pci_attach_subdev(pcidev, bus, device) 79 struct device *pcidev; 80 int bus, device; 81 { 82 pcitag_t tag; 83 pcireg_t id, class; 84 struct pci_attach_args pa; 85 struct cfdata *cf; 86 int supported; 87 char devinfo[256]; 88 89 tag = pci_make_tag(bus, device, 0); 90 id = pci_conf_read(tag, PCI_ID_REG); 91 if (id == 0 || id == 0xffffffff) 92 return (0); 93 class = pci_conf_read(tag, PCI_CLASS_REG); 94 95 pa.pa_bus = bus; 96 pa.pa_device = device; 97 pa.pa_tag = tag; 98 pa.pa_id = id; 99 pa.pa_class = class; 100 101 #if defined(PCIVERBOSE) && 0 /* _too_ verbose */ 102 pci_devinfo(id, class, devinfo, NULL); 103 printf("%s bus %d device %d: %s\n", pcidev->dv_xname, bus, 104 device, devinfo); 105 #endif /* _too_ verbose */ 106 107 if ((cf = config_search(pcisubmatch, pcidev, &pa)) != NULL) 108 config_attach(pcidev, cf, &pa, pciprint); 109 else { 110 pci_devinfo(id, class, 1, devinfo); 111 printf("%s bus %d device %d: %s not configured\n", 112 pcidev->dv_xname, bus, device, devinfo); 113 return (0); 114 } 115 116 return (1); 117 } 118 119 /* 120 * Descriptions of known PCI classes and subclasses. 121 * 122 * Subclasses are described in the same way as classes, but have a 123 * NULL subclass pointer. 124 */ 125 struct pci_class { 126 char *name; 127 int val; /* as wide as pci_{,sub}class_t */ 128 struct pci_class *subclasses; 129 }; 130 131 struct pci_class pci_subclass_prehistoric[] = { 132 { "miscellaneous", PCI_SUBCLASS_PREHISTORIC_MISC, }, 133 { "VGA", PCI_SUBCLASS_PREHISTORIC_VGA, }, 134 { 0 } 135 }; 136 137 struct pci_class pci_subclass_mass_storage[] = { 138 { "SCSI", PCI_SUBCLASS_MASS_STORAGE_SCSI, }, 139 { "IDE", PCI_SUBCLASS_MASS_STORAGE_IDE, }, 140 { "floppy", PCI_SUBCLASS_MASS_STORAGE_FLOPPY, }, 141 { "IPI", PCI_SUBCLASS_MASS_STORAGE_IPI, }, 142 { "miscellaneous", PCI_SUBCLASS_MASS_STORAGE_MISC, }, 143 { 0 }, 144 }; 145 146 struct pci_class pci_subclass_network[] = { 147 { "ethernet", PCI_SUBCLASS_NETWORK_ETHERNET, }, 148 { "token ring", PCI_SUBCLASS_NETWORK_TOKENRING, }, 149 { "FDDI", PCI_SUBCLASS_NETWORK_FDDI, }, 150 { "miscellaneous", PCI_SUBCLASS_NETWORK_MISC, }, 151 { 0 }, 152 }; 153 154 struct pci_class pci_subclass_display[] = { 155 { "VGA", PCI_SUBCLASS_DISPLAY_VGA, }, 156 { "XGA", PCI_SUBCLASS_DISPLAY_XGA, }, 157 { "miscellaneous", PCI_SUBCLASS_DISPLAY_MISC, }, 158 { 0 }, 159 }; 160 161 struct pci_class pci_subclass_multimedia[] = { 162 { "video", PCI_SUBCLASS_MULTIMEDIA_VIDEO, }, 163 { "audio", PCI_SUBCLASS_MULTIMEDIA_AUDIO, }, 164 { "miscellaneous", PCI_SUBCLASS_MULTIMEDIA_MISC, }, 165 { 0 }, 166 }; 167 168 struct pci_class pci_subclass_memory[] = { 169 { "RAM", PCI_SUBCLASS_MEMORY_RAM, }, 170 { "flash", PCI_SUBCLASS_MEMORY_FLASH, }, 171 { "miscellaneous", PCI_SUBCLASS_MEMORY_MISC, }, 172 { 0 }, 173 }; 174 175 struct pci_class pci_subclass_bridge[] = { 176 { "host", PCI_SUBCLASS_BRIDGE_HOST, }, 177 { "ISA", PCI_SUBCLASS_BRIDGE_ISA, }, 178 { "EISA", PCI_SUBCLASS_BRIDGE_EISA, }, 179 { "MicroChannel", PCI_SUBCLASS_BRIDGE_MC, }, 180 { "PCI", PCI_SUBCLASS_BRIDGE_PCI, }, 181 { "PCMCIA", PCI_SUBCLASS_BRIDGE_PCMCIA, }, 182 { "miscellaneous", PCI_SUBCLASS_BRIDGE_MISC, }, 183 { 0 }, 184 }; 185 186 struct pci_class pci_class[] = { 187 { "prehistoric", PCI_CLASS_PREHISTORIC, 188 pci_subclass_prehistoric, }, 189 { "mass storage", PCI_CLASS_MASS_STORAGE, 190 pci_subclass_mass_storage, }, 191 { "network", PCI_CLASS_NETWORK, 192 pci_subclass_network, }, 193 { "display", PCI_CLASS_DISPLAY, 194 pci_subclass_display, }, 195 { "multimedia", PCI_CLASS_MULTIMEDIA, 196 pci_subclass_multimedia, }, 197 { "memory", PCI_CLASS_MEMORY, 198 pci_subclass_memory, }, 199 { "bridge", PCI_CLASS_BRIDGE, 200 pci_subclass_bridge, }, 201 { "undefined", PCI_CLASS_UNDEFINED, 202 0, }, 203 { 0 }, 204 }; 205 206 #ifdef PCIVERBOSE 207 /* 208 * Descriptions of of known vendors and devices ("products"). 209 */ 210 struct pci_knowndev { 211 pci_vendor_id_t vendor; 212 pci_product_id_t product; 213 int flags; 214 char *vendorname, *productname; 215 }; 216 #define PCI_KNOWNDEV_NOPROD 0x01 /* match on vendor only */ 217 218 #include <dev/pci/pcidevs_data.h> 219 #endif /* PCIVERBOSE */ 220 221 void 222 pci_devinfo(id_reg, class_reg, showclass, cp) 223 pcireg_t id_reg, class_reg; 224 int showclass; 225 char *cp; 226 { 227 pci_vendor_id_t vendor; 228 pci_product_id_t product; 229 pci_class_t class; 230 pci_subclass_t subclass; 231 pci_interface_t interface; 232 pci_revision_t revision; 233 char *vendor_namep, *product_namep; 234 struct pci_class *classp, *subclassp; 235 #ifdef PCIVERBOSE 236 struct pci_knowndev *kdp; 237 #endif 238 239 vendor = PCI_VENDOR(id_reg); 240 product = PCI_PRODUCT(id_reg); 241 242 class = PCI_CLASS(class_reg); 243 subclass = PCI_SUBCLASS(class_reg); 244 interface = PCI_INTERFACE(class_reg); 245 revision = PCI_REVISION(class_reg); 246 247 #ifdef PCIVERBOSE 248 kdp = pci_knowndevs; 249 while (kdp->vendorname != NULL) { /* all have vendor name */ 250 if (kdp->vendor == vendor && (kdp->product == product || 251 (kdp->flags & PCI_KNOWNDEV_NOPROD) != 0)) 252 break; 253 kdp++; 254 } 255 if (kdp->vendorname == NULL) 256 vendor_namep = product_namep = NULL; 257 else { 258 vendor_namep = kdp->vendorname; 259 product_namep = (kdp->flags & PCI_KNOWNDEV_NOPROD) == 0 ? 260 kdp->productname : NULL; 261 } 262 #else /* PCIVERBOSE */ 263 vendor_namep = product_namep = NULL; 264 #endif /* PCIVERBOSE */ 265 266 classp = pci_class; 267 while (classp->name != NULL) { 268 if (class == classp->val) 269 break; 270 classp++; 271 } 272 273 subclassp = (classp->name != NULL) ? classp->subclasses : NULL; 274 while (subclassp && subclassp->name != NULL) { 275 if (subclass == subclassp->val) 276 break; 277 subclassp++; 278 } 279 280 if (vendor_namep == NULL) 281 cp += sprintf(cp, "unknown vendor/product: 0x%04x/0x%04x", 282 vendor, product); 283 else if (product_namep != NULL) 284 cp += sprintf(cp, "%s %s", vendor_namep, product_namep); 285 else 286 cp += sprintf(cp, "vendor: %s, unknown product: 0x%x", 287 vendor_namep, product); 288 if (showclass) { 289 cp += sprintf(cp, " ("); 290 if (classp->name == NULL) 291 cp += sprintf(cp, 292 "unknown class/subclass: 0x%02x/0x%02x", 293 class, subclass); 294 else { 295 cp += sprintf(cp, "class: %s, ", classp->name); 296 if (subclassp == NULL || subclassp->name == NULL) 297 cp += sprintf(cp, "unknown subclass: 0x%02x", 298 subclass); 299 else 300 cp += sprintf(cp, "subclass: %s", 301 subclassp->name); 302 } 303 #if 0 /* not very useful */ 304 cp += sprintf(cp, ", interface: 0x%02x", interface); 305 #endif 306 cp += sprintf(cp, ", revision: 0x%02x)", revision); 307 } 308 } 309
Indexes created Tue Sep 23 21:09:50 GMT 2025