1 // SPDX-License-Identifier: GPL-2.0 2 /* 3 * Probe for 8250/16550-type ISAPNP serial ports. 4 * 5 * Based on drivers/char/serial.c, by Linus Torvalds, Theodore Ts'o. 6 * 7 * Copyright (C) 2001 Russell King, All Rights Reserved. 8 * 9 * Ported to the Linux PnP Layer - (C) Adam Belay. 10 */ 11 #include <linux/module.h> 12 #include <linux/pci.h> 13 #include <linux/pnp.h> 14 #include <linux/string.h> 15 #include <linux/kernel.h> 16 #include <linux/serial_core.h> 17 #include <linux/bitops.h> 18 19 #include <asm/byteorder.h> 20 21 #include "8250.h" 22 23 #define UNKNOWN_DEV 0x3000 24 #define CIR_PORT 0x0800 25 26 static const struct pnp_device_id pnp_dev_table[] = { 27 /* Archtek America Corp. */ 28 /* Archtek SmartLink Modem 3334BT Plug & Play */ 29 { "AAC000F", 0 }, 30 /* Anchor Datacomm BV */ 31 /* SXPro 144 External Data Fax Modem Plug & Play */ 32 { "ADC0001", 0 }, 33 /* SXPro 288 External Data Fax Modem Plug & Play */ 34 { "ADC0002", 0 }, 35 /* PROLiNK 1456VH ISA PnP K56flex Fax Modem */ 36 { "AEI0250", 0 }, 37 /* Actiontec ISA PNP 56K X2 Fax Modem */ 38 { "AEI1240", 0 }, 39 /* Rockwell 56K ACF II Fax+Data+Voice Modem */ 40 { "AKY1021", 0 /*SPCI_FL_NO_SHIRQ*/ }, 41 /* 42 * ALi Fast Infrared Controller 43 * Native driver (ali-ircc) is broken so at least 44 * it can be used with irtty-sir. 45 */ 46 { "ALI5123", 0 }, 47 /* AZT3005 PnP SOUND DEVICE */ 48 { "AZT4001", 0 }, 49 /* Best Data Products Inc. Smart One 336F PnP Modem */ 50 { "BDP3336", 0 }, 51 /* Boca Research */ 52 /* Boca Complete Ofc Communicator 14.4 Data-FAX */ 53 { "BRI0A49", 0 }, 54 /* Boca Research 33,600 ACF Modem */ 55 { "BRI1400", 0 }, 56 /* Boca 33.6 Kbps Internal FD34FSVD */ 57 { "BRI3400", 0 }, 58 /* Boca 33.6 Kbps Internal FD34FSVD */ 59 { "BRI0A49", 0 }, 60 /* Best Data Products Inc. Smart One 336F PnP Modem */ 61 { "BDP3336", 0 }, 62 /* Computer Peripherals Inc */ 63 /* EuroViVa CommCenter-33.6 SP PnP */ 64 { "CPI4050", 0 }, 65 /* Creative Labs */ 66 /* Creative Labs Phone Blaster 28.8 DSVD PnP Voice */ 67 { "CTL3001", 0 }, 68 /* Creative Labs Modem Blaster 28.8 DSVD PnP Voice */ 69 { "CTL3011", 0 }, 70 /* Davicom ISA 33.6K Modem */ 71 { "DAV0336", 0 }, 72 /* Creative */ 73 /* Creative Modem Blaster Flash56 DI5601-1 */ 74 { "DMB1032", 0 }, 75 /* Creative Modem Blaster V.90 DI5660 */ 76 { "DMB2001", 0 }, 77 /* E-Tech */ 78 /* E-Tech CyberBULLET PC56RVP */ 79 { "ETT0002", 0 }, 80 /* FUJITSU */ 81 /* Fujitsu 33600 PnP-I2 R Plug & Play */ 82 { "FUJ0202", 0 }, 83 /* Fujitsu FMV-FX431 Plug & Play */ 84 { "FUJ0205", 0 }, 85 /* Fujitsu 33600 PnP-I4 R Plug & Play */ 86 { "FUJ0206", 0 }, 87 /* Fujitsu Fax Voice 33600 PNP-I5 R Plug & Play */ 88 { "FUJ0209", 0 }, 89 /* Archtek America Corp. */ 90 /* Archtek SmartLink Modem 3334BT Plug & Play */ 91 { "GVC000F", 0 }, 92 /* Archtek SmartLink Modem 3334BRV 33.6K Data Fax Voice */ 93 { "GVC0303", 0 }, 94 /* Hayes */ 95 /* Hayes Optima 288 V.34-V.FC + FAX + Voice Plug & Play */ 96 { "HAY0001", 0 }, 97 /* Hayes Optima 336 V.34 + FAX + Voice PnP */ 98 { "HAY000C", 0 }, 99 /* Hayes Optima 336B V.34 + FAX + Voice PnP */ 100 { "HAY000D", 0 }, 101 /* Hayes Accura 56K Ext Fax Modem PnP */ 102 { "HAY5670", 0 }, 103 /* Hayes Accura 56K Ext Fax Modem PnP */ 104 { "HAY5674", 0 }, 105 /* Hayes Accura 56K Fax Modem PnP */ 106 { "HAY5675", 0 }, 107 /* Hayes 288, V.34 + FAX */ 108 { "HAYF000", 0 }, 109 /* Hayes Optima 288 V.34 + FAX + Voice, Plug & Play */ 110 { "HAYF001", 0 }, 111 /* IBM */ 112 /* IBM Thinkpad 701 Internal Modem Voice */ 113 { "IBM0033", 0 }, 114 /* Intermec */ 115 /* Intermec CV60 touchscreen port */ 116 { "PNP4972", 0 }, 117 /* Intertex */ 118 /* Intertex 28k8 33k6 Voice EXT PnP */ 119 { "IXDC801", 0 }, 120 /* Intertex 33k6 56k Voice EXT PnP */ 121 { "IXDC901", 0 }, 122 /* Intertex 28k8 33k6 Voice SP EXT PnP */ 123 { "IXDD801", 0 }, 124 /* Intertex 33k6 56k Voice SP EXT PnP */ 125 { "IXDD901", 0 }, 126 /* Intertex 28k8 33k6 Voice SP INT PnP */ 127 { "IXDF401", 0 }, 128 /* Intertex 28k8 33k6 Voice SP EXT PnP */ 129 { "IXDF801", 0 }, 130 /* Intertex 33k6 56k Voice SP EXT PnP */ 131 { "IXDF901", 0 }, 132 /* Kortex International */ 133 /* KORTEX 28800 Externe PnP */ 134 { "KOR4522", 0 }, 135 /* KXPro 33.6 Vocal ASVD PnP */ 136 { "KORF661", 0 }, 137 /* Lasat */ 138 /* LASAT Internet 33600 PnP */ 139 { "LAS4040", 0 }, 140 /* Lasat Safire 560 PnP */ 141 { "LAS4540", 0 }, 142 /* Lasat Safire 336 PnP */ 143 { "LAS5440", 0 }, 144 /* Microcom, Inc. */ 145 /* Microcom TravelPorte FAST V.34 Plug & Play */ 146 { "MNP0281", 0 }, 147 /* Microcom DeskPorte V.34 FAST or FAST+ Plug & Play */ 148 { "MNP0336", 0 }, 149 /* Microcom DeskPorte FAST EP 28.8 Plug & Play */ 150 { "MNP0339", 0 }, 151 /* Microcom DeskPorte 28.8P Plug & Play */ 152 { "MNP0342", 0 }, 153 /* Microcom DeskPorte FAST ES 28.8 Plug & Play */ 154 { "MNP0500", 0 }, 155 /* Microcom DeskPorte FAST ES 28.8 Plug & Play */ 156 { "MNP0501", 0 }, 157 /* Microcom DeskPorte 28.8S Internal Plug & Play */ 158 { "MNP0502", 0 }, 159 /* Motorola */ 160 /* Motorola BitSURFR Plug & Play */ 161 { "MOT1105", 0 }, 162 /* Motorola TA210 Plug & Play */ 163 { "MOT1111", 0 }, 164 /* Motorola HMTA 200 (ISDN) Plug & Play */ 165 { "MOT1114", 0 }, 166 /* Motorola BitSURFR Plug & Play */ 167 { "MOT1115", 0 }, 168 /* Motorola Lifestyle 28.8 Internal */ 169 { "MOT1190", 0 }, 170 /* Motorola V.3400 Plug & Play */ 171 { "MOT1501", 0 }, 172 /* Motorola Lifestyle 28.8 V.34 Plug & Play */ 173 { "MOT1502", 0 }, 174 /* Motorola Power 28.8 V.34 Plug & Play */ 175 { "MOT1505", 0 }, 176 /* Motorola ModemSURFR External 28.8 Plug & Play */ 177 { "MOT1509", 0 }, 178 /* Motorola Premier 33.6 Desktop Plug & Play */ 179 { "MOT150A", 0 }, 180 /* Motorola VoiceSURFR 56K External PnP */ 181 { "MOT150F", 0 }, 182 /* Motorola ModemSURFR 56K External PnP */ 183 { "MOT1510", 0 }, 184 /* Motorola ModemSURFR 56K Internal PnP */ 185 { "MOT1550", 0 }, 186 /* Motorola ModemSURFR Internal 28.8 Plug & Play */ 187 { "MOT1560", 0 }, 188 /* Motorola Premier 33.6 Internal Plug & Play */ 189 { "MOT1580", 0 }, 190 /* Motorola OnlineSURFR 28.8 Internal Plug & Play */ 191 { "MOT15B0", 0 }, 192 /* Motorola VoiceSURFR 56K Internal PnP */ 193 { "MOT15F0", 0 }, 194 /* Com 1 */ 195 /* Deskline K56 Phone System PnP */ 196 { "MVX00A1", 0 }, 197 /* PC Rider K56 Phone System PnP */ 198 { "MVX00F2", 0 }, 199 /* NEC 98NOTE SPEAKER PHONE FAX MODEM(33600bps) */ 200 { "nEC8241", 0 }, 201 /* Pace 56 Voice Internal Plug & Play Modem */ 202 { "PMC2430", 0 }, 203 /* Generic */ 204 /* Generic standard PC COM port */ 205 { "PNP0500", 0 }, 206 /* Generic 16550A-compatible COM port */ 207 { "PNP0501", 0 }, 208 /* Compaq 14400 Modem */ 209 { "PNPC000", 0 }, 210 /* Compaq 2400/9600 Modem */ 211 { "PNPC001", 0 }, 212 /* Dial-Up Networking Serial Cable between 2 PCs */ 213 { "PNPC031", 0 }, 214 /* Dial-Up Networking Parallel Cable between 2 PCs */ 215 { "PNPC032", 0 }, 216 /* Standard 9600 bps Modem */ 217 { "PNPC100", 0 }, 218 /* Standard 14400 bps Modem */ 219 { "PNPC101", 0 }, 220 /* Standard 28800 bps Modem*/ 221 { "PNPC102", 0 }, 222 /* Standard Modem*/ 223 { "PNPC103", 0 }, 224 /* Standard 9600 bps Modem*/ 225 { "PNPC104", 0 }, 226 /* Standard 14400 bps Modem*/ 227 { "PNPC105", 0 }, 228 /* Standard 28800 bps Modem*/ 229 { "PNPC106", 0 }, 230 /* Standard Modem */ 231 { "PNPC107", 0 }, 232 /* Standard 9600 bps Modem */ 233 { "PNPC108", 0 }, 234 /* Standard 14400 bps Modem */ 235 { "PNPC109", 0 }, 236 /* Standard 28800 bps Modem */ 237 { "PNPC10A", 0 }, 238 /* Standard Modem */ 239 { "PNPC10B", 0 }, 240 /* Standard 9600 bps Modem */ 241 { "PNPC10C", 0 }, 242 /* Standard 14400 bps Modem */ 243 { "PNPC10D", 0 }, 244 /* Standard 28800 bps Modem */ 245 { "PNPC10E", 0 }, 246 /* Standard Modem */ 247 { "PNPC10F", 0 }, 248 /* Standard PCMCIA Card Modem */ 249 { "PNP2000", 0 }, 250 /* Rockwell */ 251 /* Modular Technology */ 252 /* Rockwell 33.6 DPF Internal PnP */ 253 /* Modular Technology 33.6 Internal PnP */ 254 { "ROK0030", 0 }, 255 /* Kortex International */ 256 /* KORTEX 14400 Externe PnP */ 257 { "ROK0100", 0 }, 258 /* Rockwell 28.8 */ 259 { "ROK4120", 0 }, 260 /* Viking Components, Inc */ 261 /* Viking 28.8 INTERNAL Fax+Data+Voice PnP */ 262 { "ROK4920", 0 }, 263 /* Rockwell */ 264 /* British Telecom */ 265 /* Modular Technology */ 266 /* Rockwell 33.6 DPF External PnP */ 267 /* BT Prologue 33.6 External PnP */ 268 /* Modular Technology 33.6 External PnP */ 269 { "RSS00A0", 0 }, 270 /* Viking 56K FAX INT */ 271 { "RSS0262", 0 }, 272 /* K56 par,VV,Voice,Speakphone,AudioSpan,PnP */ 273 { "RSS0250", 0 }, 274 /* SupraExpress 28.8 Data/Fax PnP modem */ 275 { "SUP1310", 0 }, 276 /* SupraExpress 336i PnP Voice Modem */ 277 { "SUP1381", 0 }, 278 /* SupraExpress 33.6 Data/Fax PnP modem */ 279 { "SUP1421", 0 }, 280 /* SupraExpress 33.6 Data/Fax PnP modem */ 281 { "SUP1590", 0 }, 282 /* SupraExpress 336i Sp ASVD */ 283 { "SUP1620", 0 }, 284 /* SupraExpress 33.6 Data/Fax PnP modem */ 285 { "SUP1760", 0 }, 286 /* SupraExpress 56i Sp Intl */ 287 { "SUP2171", 0 }, 288 /* Phoebe Micro */ 289 /* Phoebe Micro 33.6 Data Fax 1433VQH Plug & Play */ 290 { "TEX0011", 0 }, 291 /* Archtek America Corp. */ 292 /* Archtek SmartLink Modem 3334BT Plug & Play */ 293 { "UAC000F", 0 }, 294 /* 3Com Corp. */ 295 /* Gateway Telepath IIvi 33.6 */ 296 { "USR0000", 0 }, 297 /* U.S. Robotics Sporster 33.6K Fax INT PnP */ 298 { "USR0002", 0 }, 299 /* Sportster Vi 14.4 PnP FAX Voicemail */ 300 { "USR0004", 0 }, 301 /* U.S. Robotics 33.6K Voice INT PnP */ 302 { "USR0006", 0 }, 303 /* U.S. Robotics 33.6K Voice EXT PnP */ 304 { "USR0007", 0 }, 305 /* U.S. Robotics Courier V.Everything INT PnP */ 306 { "USR0009", 0 }, 307 /* U.S. Robotics 33.6K Voice INT PnP */ 308 { "USR2002", 0 }, 309 /* U.S. Robotics 56K Voice INT PnP */ 310 { "USR2070", 0 }, 311 /* U.S. Robotics 56K Voice EXT PnP */ 312 { "USR2080", 0 }, 313 /* U.S. Robotics 56K FAX INT */ 314 { "USR3031", 0 }, 315 /* U.S. Robotics 56K FAX INT */ 316 { "USR3050", 0 }, 317 /* U.S. Robotics 56K Voice INT PnP */ 318 { "USR3070", 0 }, 319 /* U.S. Robotics 56K Voice EXT PnP */ 320 { "USR3080", 0 }, 321 /* U.S. Robotics 56K Voice INT PnP */ 322 { "USR3090", 0 }, 323 /* U.S. Robotics 56K Message */ 324 { "USR9100", 0 }, 325 /* U.S. Robotics 56K FAX EXT PnP*/ 326 { "USR9160", 0 }, 327 /* U.S. Robotics 56K FAX INT PnP*/ 328 { "USR9170", 0 }, 329 /* U.S. Robotics 56K Voice EXT PnP*/ 330 { "USR9180", 0 }, 331 /* U.S. Robotics 56K Voice INT PnP*/ 332 { "USR9190", 0 }, 333 /* Wacom tablets */ 334 { "WACFXXX", 0 }, 335 /* Compaq touchscreen */ 336 { "FPI2002", 0 }, 337 /* Fujitsu Stylistic touchscreens */ 338 { "FUJ02B2", 0 }, 339 { "FUJ02B3", 0 }, 340 /* Fujitsu Stylistic LT touchscreens */ 341 { "FUJ02B4", 0 }, 342 /* Passive Fujitsu Stylistic touchscreens */ 343 { "FUJ02B6", 0 }, 344 { "FUJ02B7", 0 }, 345 { "FUJ02B8", 0 }, 346 { "FUJ02B9", 0 }, 347 { "FUJ02BC", 0 }, 348 /* Fujitsu Wacom Tablet PC device */ 349 { "FUJ02E5", 0 }, 350 /* Fujitsu P-series tablet PC device */ 351 { "FUJ02E6", 0 }, 352 /* Fujitsu Wacom 2FGT Tablet PC device */ 353 { "FUJ02E7", 0 }, 354 /* Fujitsu Wacom 1FGT Tablet PC device */ 355 { "FUJ02E9", 0 }, 356 /* 357 * LG C1 EXPRESS DUAL (C1-PB11A3) touch screen (actually a FUJ02E6 358 * in disguise). 359 */ 360 { "LTS0001", 0 }, 361 /* Rockwell's (PORALiNK) 33600 INT PNP */ 362 { "WCI0003", 0 }, 363 /* Unknown PnP modems */ 364 { "PNPCXXX", UNKNOWN_DEV }, 365 /* More unknown PnP modems */ 366 { "PNPDXXX", UNKNOWN_DEV }, 367 /* 368 * Winbond CIR port, should not be probed. We should keep track of 369 * it to prevent the legacy serial driver from probing it. 370 */ 371 { "WEC1022", CIR_PORT }, 372 /* 373 * SMSC IrCC SIR/FIR port, should not be probed by serial driver as 374 * well so its own driver can bind to it. 375 */ 376 { "SMCF010", CIR_PORT }, 377 { "", 0 } 378 }; 379 380 MODULE_DEVICE_TABLE(pnp, pnp_dev_table); 381 382 static const char *modem_names[] = { 383 "MODEM", "Modem", "modem", "FAX", "Fax", "fax", 384 "56K", "56k", "K56", "33.6", "28.8", "14.4", 385 "33,600", "28,800", "14,400", "33.600", "28.800", "14.400", 386 "33600", "28800", "14400", "V.90", "V.34", "V.32", NULL 387 }; 388 389 static bool check_name(const char *name) 390 { 391 const char **tmp; 392 393 for (tmp = modem_names; *tmp; tmp++) 394 if (strstr(name, *tmp)) 395 return true; 396 397 return false; 398 } 399 400 static bool check_resources(struct pnp_dev *dev) 401 { 402 static const resource_size_t base[] = {0x2f8, 0x3f8, 0x2e8, 0x3e8}; 403 unsigned int i; 404 405 for (i = 0; i < ARRAY_SIZE(base); i++) { 406 if (pnp_possible_config(dev, IORESOURCE_IO, base[i], 8)) 407 return true; 408 } 409 410 return false; 411 } 412 413 /* 414 * Given a complete unknown PnP device, try to use some heuristics to 415 * detect modems. Currently use such heuristic set: 416 * - dev->name or dev->bus->name must contain "modem" substring; 417 * - device must have only one IO region (8 byte long) with base address 418 * 0x2e8, 0x3e8, 0x2f8 or 0x3f8. 419 * 420 * Such detection looks very ugly, but can detect at least some of numerous 421 * PnP modems, alternatively we must hardcode all modems in pnp_devices[] 422 * table. 423 */ 424 static int serial_pnp_guess_board(struct pnp_dev *dev) 425 { 426 if (!(check_name(pnp_dev_name(dev)) || 427 (dev->card && check_name(dev->card->name)))) 428 return -ENODEV; 429 430 if (check_resources(dev)) 431 return 0; 432 433 return -ENODEV; 434 } 435 436 static int 437 serial_pnp_probe(struct pnp_dev *dev, const struct pnp_device_id *dev_id) 438 { 439 struct uart_8250_port uart, *port; 440 int ret, line, flags = dev_id->driver_data; 441 442 if (flags & UNKNOWN_DEV) { 443 ret = serial_pnp_guess_board(dev); 444 if (ret < 0) 445 return ret; 446 } 447 448 memset(&uart, 0, sizeof(uart)); 449 if (pnp_irq_valid(dev, 0)) 450 uart.port.irq = pnp_irq(dev, 0); 451 if ((flags & CIR_PORT) && pnp_port_valid(dev, 2)) { 452 uart.port.iobase = pnp_port_start(dev, 2); 453 uart.port.iotype = UPIO_PORT; 454 } else if (pnp_port_valid(dev, 0)) { 455 uart.port.iobase = pnp_port_start(dev, 0); 456 uart.port.iotype = UPIO_PORT; 457 } else if (pnp_mem_valid(dev, 0)) { 458 uart.port.mapbase = pnp_mem_start(dev, 0); 459 uart.port.iotype = UPIO_MEM; 460 uart.port.flags = UPF_IOREMAP; 461 } else 462 return -ENODEV; 463 464 dev_dbg(&dev->dev, 465 "Setup PNP port: port %#lx, mem %#llx, irq %u, type %u\n", 466 uart.port.iobase, (unsigned long long)uart.port.mapbase, 467 uart.port.irq, uart.port.iotype); 468 469 if (flags & CIR_PORT) { 470 uart.port.flags |= UPF_FIXED_PORT | UPF_FIXED_TYPE; 471 uart.port.type = PORT_8250_CIR; 472 } 473 474 uart.port.flags |= UPF_SKIP_TEST | UPF_BOOT_AUTOCONF; 475 if (pnp_irq_flags(dev, 0) & IORESOURCE_IRQ_SHAREABLE) 476 uart.port.flags |= UPF_SHARE_IRQ; 477 uart.port.uartclk = 1843200; 478 uart.port.dev = &dev->dev; 479 480 line = serial8250_register_8250_port(&uart); 481 if (line < 0 || (flags & CIR_PORT)) 482 return -ENODEV; 483 484 port = serial8250_get_port(line); 485 if (uart_console(&port->port)) 486 dev->capabilities |= PNP_CONSOLE; 487 488 pnp_set_drvdata(dev, (void *)((long)line + 1)); 489 return 0; 490 } 491 492 static void serial_pnp_remove(struct pnp_dev *dev) 493 { 494 long line = (long)pnp_get_drvdata(dev); 495 496 dev->capabilities &= ~PNP_CONSOLE; 497 if (line) 498 serial8250_unregister_port(line - 1); 499 } 500 501 static int __maybe_unused serial_pnp_suspend(struct device *dev) 502 { 503 long line = (long)dev_get_drvdata(dev); 504 505 if (!line) 506 return -ENODEV; 507 serial8250_suspend_port(line - 1); 508 return 0; 509 } 510 511 static int __maybe_unused serial_pnp_resume(struct device *dev) 512 { 513 long line = (long)dev_get_drvdata(dev); 514 515 if (!line) 516 return -ENODEV; 517 serial8250_resume_port(line - 1); 518 return 0; 519 } 520 521 static SIMPLE_DEV_PM_OPS(serial_pnp_pm_ops, serial_pnp_suspend, serial_pnp_resume); 522 523 static struct pnp_driver serial_pnp_driver = { 524 .name = "serial", 525 .probe = serial_pnp_probe, 526 .remove = serial_pnp_remove, 527 .driver = { 528 .pm = &serial_pnp_pm_ops, 529 }, 530 .id_table = pnp_dev_table, 531 }; 532 533 int serial8250_pnp_init(void) 534 { 535 return pnp_register_driver(&serial_pnp_driver); 536 } 537 538 void serial8250_pnp_exit(void) 539 { 540 pnp_unregister_driver(&serial_pnp_driver); 541 } 542 543