1 /* $OpenBSD: pci_subr.c,v 1.18 2006/05/12 20:24:39 brad Exp $ */ 2 /* $NetBSD: pci_subr.c,v 1.19 1996/10/13 01:38:29 christos Exp $ */ 3 4 /* 5 * Copyright (c) 1995, 1996 Christopher G. Demetriou. All rights reserved. 6 * Copyright (c) 1994 Charles Hannum. All rights reserved. 7 * 8 * Redistribution and use in source and binary forms, with or without 9 * modification, are permitted provided that the following conditions 10 * are met: 11 * 1. Redistributions of source code must retain the above copyright 12 * notice, this list of conditions and the following disclaimer. 13 * 2. Redistributions in binary form must reproduce the above copyright 14 * notice, this list of conditions and the following disclaimer in the 15 * documentation and/or other materials provided with the distribution. 16 * 3. All advertising materials mentioning features or use of this software 17 * must display the following acknowledgement: 18 * This product includes software developed by Charles Hannum. 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 * PCI autoconfiguration support functions. 36 */ 37 38 #include <sys/param.h> 39 #include <sys/systm.h> 40 #include <sys/device.h> 41 42 #include <dev/pci/pcireg.h> 43 #include <dev/pci/pcivar.h> 44 #ifdef PCIVERBOSE 45 #include <dev/pci/pcidevs.h> 46 #endif 47 48 /* 49 * Descriptions of known PCI classes and subclasses. 50 * 51 * Subclasses are described in the same way as classes, but have a 52 * NULL subclass pointer. 53 */ 54 struct pci_class { 55 const char *name; 56 int val; /* as wide as pci_{,sub}class_t */ 57 const struct pci_class *subclasses; 58 }; 59 60 const struct pci_class pci_subclass_prehistoric[] = { 61 { "miscellaneous", PCI_SUBCLASS_PREHISTORIC_MISC, }, 62 { "VGA", PCI_SUBCLASS_PREHISTORIC_VGA, }, 63 { 0 } 64 }; 65 66 const struct pci_class pci_subclass_mass_storage[] = { 67 { "SCSI", PCI_SUBCLASS_MASS_STORAGE_SCSI, }, 68 { "IDE", PCI_SUBCLASS_MASS_STORAGE_IDE, }, 69 { "floppy", PCI_SUBCLASS_MASS_STORAGE_FLOPPY, }, 70 { "IPI", PCI_SUBCLASS_MASS_STORAGE_IPI, }, 71 { "RAID", PCI_SUBCLASS_MASS_STORAGE_RAID, }, 72 { "ATA", PCI_SUBCLASS_MASS_STORAGE_ATA, }, 73 { "SATA", PCI_SUBCLASS_MASS_STORAGE_SATA, }, 74 { "miscellaneous", PCI_SUBCLASS_MASS_STORAGE_MISC, }, 75 { 0 }, 76 }; 77 78 const struct pci_class pci_subclass_network[] = { 79 { "ethernet", PCI_SUBCLASS_NETWORK_ETHERNET, }, 80 { "token ring", PCI_SUBCLASS_NETWORK_TOKENRING, }, 81 { "FDDI", PCI_SUBCLASS_NETWORK_FDDI, }, 82 { "ATM", PCI_SUBCLASS_NETWORK_ATM, }, 83 { "ISDN", PCI_SUBCLASS_NETWORK_ISDN, }, 84 { "WorldFip", PCI_SUBCLASS_NETWORK_WORLDFIP, }, 85 { "PCMIG Multi Computing", PCI_SUBCLASS_NETWORK_PCIMGMULTICOMP, }, 86 { "miscellaneous", PCI_SUBCLASS_NETWORK_MISC, }, 87 { 0 }, 88 }; 89 90 const struct pci_class pci_subclass_display[] = { 91 { "VGA", PCI_SUBCLASS_DISPLAY_VGA, }, 92 { "XGA", PCI_SUBCLASS_DISPLAY_XGA, }, 93 { "3D", PCI_SUBCLASS_DISPLAY_3D, }, 94 { "miscellaneous", PCI_SUBCLASS_DISPLAY_MISC, }, 95 { 0 }, 96 }; 97 98 const struct pci_class pci_subclass_multimedia[] = { 99 { "video", PCI_SUBCLASS_MULTIMEDIA_VIDEO, }, 100 { "audio", PCI_SUBCLASS_MULTIMEDIA_AUDIO, }, 101 { "telephony", PCI_SUBCLASS_MULTIMEDIA_TELEPHONY, }, 102 { "hdaudio", PCI_SUBCLASS_MULTIMEDIA_HDAUDIO, }, 103 { "miscellaneous", PCI_SUBCLASS_MULTIMEDIA_MISC, }, 104 { 0 }, 105 }; 106 107 const struct pci_class pci_subclass_memory[] = { 108 { "RAM", PCI_SUBCLASS_MEMORY_RAM, }, 109 { "flash", PCI_SUBCLASS_MEMORY_FLASH, }, 110 { "miscellaneous", PCI_SUBCLASS_MEMORY_MISC, }, 111 { 0 }, 112 }; 113 114 const struct pci_class pci_subclass_bridge[] = { 115 { "host", PCI_SUBCLASS_BRIDGE_HOST, }, 116 { "ISA", PCI_SUBCLASS_BRIDGE_ISA, }, 117 { "EISA", PCI_SUBCLASS_BRIDGE_EISA, }, 118 { "MicroChannel", PCI_SUBCLASS_BRIDGE_MC, }, 119 { "PCI", PCI_SUBCLASS_BRIDGE_PCI, }, 120 { "PCMCIA", PCI_SUBCLASS_BRIDGE_PCMCIA, }, 121 { "NuBus", PCI_SUBCLASS_BRIDGE_NUBUS, }, 122 { "CardBus", PCI_SUBCLASS_BRIDGE_CARDBUS, }, 123 { "RACEway", PCI_SUBCLASS_BRIDGE_RACEWAY, }, 124 { "Semi-transparent PCI", PCI_SUBCLASS_BRIDGE_STPCI, }, 125 { "InfiniBand", PCI_SUBCLASS_BRIDGE_INFINIBAND, }, 126 { "miscellaneous", PCI_SUBCLASS_BRIDGE_MISC, }, 127 { 0 }, 128 }; 129 130 const struct pci_class pci_subclass_communications[] = { 131 { "serial", PCI_SUBCLASS_COMMUNICATIONS_SERIAL, }, 132 { "parallel", PCI_SUBCLASS_COMMUNICATIONS_PARALLEL, }, 133 { "multi-port serial", PCI_SUBCLASS_COMMUNICATIONS_MPSERIAL, }, 134 { "modem", PCI_SUBCLASS_COMMUNICATIONS_MODEM, }, 135 { "GPIB", PCI_SUBCLASS_COMMUNICATIONS_GPIB, }, 136 { "smartcard", PCI_SUBCLASS_COMMUNICATIONS_SMARTCARD, }, 137 { "miscellaneous", PCI_SUBCLASS_COMMUNICATIONS_MISC, }, 138 { 0 }, 139 }; 140 141 const struct pci_class pci_subclass_system[] = { 142 { "interrupt", PCI_SUBCLASS_SYSTEM_PIC, }, 143 { "8237 DMA", PCI_SUBCLASS_SYSTEM_DMA, }, 144 { "8254 timer", PCI_SUBCLASS_SYSTEM_TIMER, }, 145 { "RTC", PCI_SUBCLASS_SYSTEM_RTC, }, 146 { "PCI Hot-Plug", PCI_SUBCLASS_SYSTEM_PCIHOTPLUG, }, 147 { "miscellaneous", PCI_SUBCLASS_SYSTEM_MISC, }, 148 { 0 }, 149 }; 150 151 const struct pci_class pci_subclass_input[] = { 152 { "keyboard", PCI_SUBCLASS_INPUT_KEYBOARD, }, 153 { "digitizer", PCI_SUBCLASS_INPUT_DIGITIZER, }, 154 { "mouse", PCI_SUBCLASS_INPUT_MOUSE, }, 155 { "scanner", PCI_SUBCLASS_INPUT_SCANNER, }, 156 { "game port", PCI_SUBCLASS_INPUT_GAMEPORT, }, 157 { "miscellaneous", PCI_SUBCLASS_INPUT_MISC, }, 158 { 0 }, 159 }; 160 161 const struct pci_class pci_subclass_dock[] = { 162 { "generic", PCI_SUBCLASS_DOCK_GENERIC, }, 163 { "miscellaneous", PCI_SUBCLASS_DOCK_MISC, }, 164 { 0 }, 165 }; 166 167 const struct pci_class pci_subclass_processor[] = { 168 { "386", PCI_SUBCLASS_PROCESSOR_386, }, 169 { "486", PCI_SUBCLASS_PROCESSOR_486, }, 170 { "Pentium", PCI_SUBCLASS_PROCESSOR_PENTIUM, }, 171 { "Alpha", PCI_SUBCLASS_PROCESSOR_ALPHA, }, 172 { "PowerPC", PCI_SUBCLASS_PROCESSOR_POWERPC, }, 173 { "MIPS", PCI_SUBCLASS_PROCESSOR_MIPS, }, 174 { "Co-processor", PCI_SUBCLASS_PROCESSOR_COPROC, }, 175 { 0 }, 176 }; 177 178 const struct pci_class pci_subclass_serialbus[] = { 179 { "Firewire", PCI_SUBCLASS_SERIALBUS_FIREWIRE, }, 180 { "ACCESS.bus", PCI_SUBCLASS_SERIALBUS_ACCESS, }, 181 { "SSA", PCI_SUBCLASS_SERIALBUS_SSA, }, 182 { "USB", PCI_SUBCLASS_SERIALBUS_USB, }, 183 /* XXX Fiber Channel/_FIBRECHANNEL */ 184 { "Fiber Channel", PCI_SUBCLASS_SERIALBUS_FIBER, }, 185 { "SMBus", PCI_SUBCLASS_SERIALBUS_SMBUS, }, 186 { "InfiniBand", PCI_SUBCLASS_SERIALBUS_INFINIBAND, }, 187 { "IPMI", PCI_SUBCLASS_SERIALBUS_IPMI, }, 188 { "SERCOS", PCI_SUBCLASS_SERIALBUS_SERCOS, }, 189 { "CANbus", PCI_SUBCLASS_SERIALBUS_CANBUS, }, 190 { 0 }, 191 }; 192 193 const struct pci_class pci_subclass_wireless[] = { 194 { "IrDA", PCI_SUBCLASS_WIRELESS_IRDA, }, 195 { "Consumer IR", PCI_SUBCLASS_WIRELESS_CONSUMERIR, }, 196 { "RF", PCI_SUBCLASS_WIRELESS_RF, }, 197 { "bluetooth", PCI_SUBCLASS_WIRELESS_BLUETOOTH, }, 198 { "broadband", PCI_SUBCLASS_WIRELESS_BROADBAND, }, 199 { "802.11a (5 GHz)", PCI_SUBCLASS_WIRELESS_802_11A, }, 200 { "802.11b (2.4 GHz)", PCI_SUBCLASS_WIRELESS_802_11B, }, 201 { "miscellaneous", PCI_SUBCLASS_WIRELESS_MISC, }, 202 { 0 }, 203 }; 204 205 const struct pci_class pci_subclass_i2o[] = { 206 { "standard", PCI_SUBCLASS_I2O_STANDARD, }, 207 { 0 }, 208 }; 209 210 const struct pci_class pci_subclass_satcom[] = { 211 { "TV", PCI_SUBCLASS_SATCOM_TV, }, 212 { "audio", PCI_SUBCLASS_SATCOM_AUDIO, }, 213 { "voice", PCI_SUBCLASS_SATCOM_VOICE, }, 214 { "data", PCI_SUBCLASS_SATCOM_DATA, }, 215 { 0 }, 216 }; 217 218 const struct pci_class pci_subclass_crypto[] = { 219 { "network/computing", PCI_SUBCLASS_CRYPTO_NETCOMP, }, 220 { "entertainment", PCI_SUBCLASS_CRYPTO_ENTERTAINMENT, }, 221 { "miscellaneous", PCI_SUBCLASS_CRYPTO_MISC, }, 222 { 0 }, 223 }; 224 225 const struct pci_class pci_subclass_dasp[] = { 226 { "DPIO", PCI_SUBCLASS_DASP_DPIO, }, 227 { "Time and Frequency", PCI_SUBCLASS_DASP_TIMEFREQ, }, 228 { "synchronization", PCI_SUBCLASS_DASP_SYNC, }, 229 { "management", PCI_SUBCLASS_DASP_MGMT, }, 230 { "miscellaneous", PCI_SUBCLASS_DASP_MISC, }, 231 { 0 }, 232 }; 233 234 const struct pci_class pci_class[] = { 235 { "prehistoric", PCI_CLASS_PREHISTORIC, 236 pci_subclass_prehistoric, }, 237 { "mass storage", PCI_CLASS_MASS_STORAGE, 238 pci_subclass_mass_storage, }, 239 { "network", PCI_CLASS_NETWORK, 240 pci_subclass_network, }, 241 { "display", PCI_CLASS_DISPLAY, 242 pci_subclass_display, }, 243 { "multimedia", PCI_CLASS_MULTIMEDIA, 244 pci_subclass_multimedia, }, 245 { "memory", PCI_CLASS_MEMORY, 246 pci_subclass_memory, }, 247 { "bridge", PCI_CLASS_BRIDGE, 248 pci_subclass_bridge, }, 249 { "communications", PCI_CLASS_COMMUNICATIONS, 250 pci_subclass_communications, }, 251 { "system", PCI_CLASS_SYSTEM, 252 pci_subclass_system, }, 253 { "input", PCI_CLASS_INPUT, 254 pci_subclass_input, }, 255 { "dock", PCI_CLASS_DOCK, 256 pci_subclass_dock, }, 257 { "processor", PCI_CLASS_PROCESSOR, 258 pci_subclass_processor, }, 259 { "serial bus", PCI_CLASS_SERIALBUS, 260 pci_subclass_serialbus, }, 261 { "wireless", PCI_CLASS_WIRELESS, 262 pci_subclass_wireless, }, 263 { "I2O", PCI_CLASS_I2O, 264 pci_subclass_i2o, }, 265 { "satellite comm", PCI_CLASS_SATCOM, 266 pci_subclass_satcom, }, 267 { "crypto", PCI_CLASS_CRYPTO, 268 pci_subclass_crypto, }, 269 { "DASP", PCI_CLASS_DASP, 270 pci_subclass_dasp, }, 271 { "undefined", PCI_CLASS_UNDEFINED, 272 0, }, 273 { 0 }, 274 }; 275 276 #ifdef PCIVERBOSE 277 /* 278 * Descriptions of known vendors and devices ("products"). 279 */ 280 struct pci_known_vendor { 281 pci_vendor_id_t vendor; 282 const char *vendorname; 283 }; 284 285 struct pci_known_product { 286 pci_vendor_id_t vendor; 287 pci_product_id_t product; 288 const char *productname; 289 }; 290 291 #include <dev/pci/pcidevs_data.h> 292 #endif /* PCIVERBOSE */ 293 294 const char * 295 pci_findvendor(pcireg_t id_reg) 296 { 297 #ifdef PCIVERBOSE 298 pci_vendor_id_t vendor = PCI_VENDOR(id_reg); 299 const struct pci_known_vendor *kdp; 300 301 kdp = pci_known_vendors; 302 while (kdp->vendorname != NULL) { /* all have vendor name */ 303 if (kdp->vendor == vendor) 304 break; 305 kdp++; 306 } 307 return (kdp->vendorname); 308 #else 309 return (NULL); 310 #endif 311 } 312 313 void 314 pci_devinfo(pcireg_t id_reg, pcireg_t class_reg, int showclass, char *cp, 315 size_t cp_max) 316 { 317 pci_vendor_id_t vendor; 318 pci_product_id_t product; 319 pci_class_t class; 320 pci_subclass_t subclass; 321 pci_interface_t interface; 322 pci_revision_t revision; 323 const char *vendor_namep = NULL, *product_namep = NULL; 324 const struct pci_class *classp, *subclassp; 325 size_t cp_len = 0; 326 #ifdef PCIVERBOSE 327 const struct pci_known_vendor *pkv; 328 const struct pci_known_product *pkp; 329 const char *unmatched = "unknown "; 330 #else 331 const char *unmatched = ""; 332 #endif 333 334 vendor = PCI_VENDOR(id_reg); 335 product = PCI_PRODUCT(id_reg); 336 337 class = PCI_CLASS(class_reg); 338 subclass = PCI_SUBCLASS(class_reg); 339 interface = PCI_INTERFACE(class_reg); 340 revision = PCI_REVISION(class_reg); 341 342 #ifdef PCIVERBOSE 343 pkv = pci_known_vendors; 344 while (pkv->vendorname != NULL) { /* all have vendor name */ 345 if (pkv->vendor == vendor) { 346 vendor_namep = pkv->vendorname; 347 break; 348 } 349 pkv++; 350 } 351 if (vendor_namep) { 352 pkp = pci_known_products; 353 while (pkp->productname != NULL) { /* all have product name */ 354 if (pkp->vendor == vendor && pkp->product == product) { 355 product_namep = pkp->productname; 356 break; 357 } 358 pkp++; 359 } 360 } 361 #endif /* PCIVERBOSE */ 362 363 classp = pci_class; 364 while (classp->name != NULL) { 365 if (class == classp->val) 366 break; 367 classp++; 368 } 369 370 subclassp = (classp->name != NULL) ? classp->subclasses : NULL; 371 while (subclassp && subclassp->name != NULL) { 372 if (subclass == subclassp->val) 373 break; 374 subclassp++; 375 } 376 377 if (vendor_namep == NULL) 378 snprintf(cp, cp_max, "%svendor 0x%04x product 0x%04x", 379 unmatched, vendor, product); 380 else if (product_namep != NULL) 381 snprintf(cp, cp_max, "\"%s %s\"", vendor_namep, product_namep); 382 else 383 snprintf(cp, cp_max, "vendor \"%s\", unknown product 0x%04x", 384 vendor_namep, product); 385 if (showclass && product_namep == NULL) { 386 strlcat(cp, " (", cp_max); 387 cp_len = strlen(cp); 388 if (classp->name == NULL) 389 snprintf(cp + cp_len, cp_max - cp_len, 390 "unknown class 0x%02x, subclass 0x%02x", 391 class, subclass); 392 else if (subclassp == NULL || subclassp->name == NULL) 393 snprintf(cp + cp_len, cp_max - cp_len, 394 "class %s unknown subclass 0x%02x", classp->name, 395 subclass); 396 else 397 snprintf(cp + cp_len, cp_max - cp_len, 398 "class %s subclass %s", classp->name, 399 subclassp->name); 400 #if 0 /* not very useful */ 401 cp_len = strlen(cp); 402 snprintf(cp + cp_len, cp_max - cp_len, 403 ", interface 0x%02x", interface); 404 #endif 405 cp_len = strlen(cp); 406 snprintf(cp + cp_len, cp_max - cp_len, 407 ", rev 0x%02x)", revision); 408 } else { 409 cp_len = strlen(cp); 410 snprintf(cp + cp_len, cp_max - cp_len, " rev 0x%02x", 411 revision); 412 } 413 } 414