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/property.h> 17 #include <linux/serial_core.h> 18 #include <linux/bitops.h> 19 20 #include <asm/byteorder.h> 21 22 #include "8250.h" 23 24 #define UNKNOWN_DEV 0x3000 25 #define CIR_PORT 0x0800 26 27 static const struct pnp_device_id pnp_dev_table[] = { 28 /* Archtek America Corp. */ 29 /* Archtek SmartLink Modem 3334BT Plug & Play */ 30 { "AAC000F", 0 }, 31 /* Anchor Datacomm BV */ 32 /* SXPro 144 External Data Fax Modem Plug & Play */ 33 { "ADC0001", 0 }, 34 /* SXPro 288 External Data Fax Modem Plug & Play */ 35 { "ADC0002", 0 }, 36 /* PROLiNK 1456VH ISA PnP K56flex Fax Modem */ 37 { "AEI0250", 0 }, 38 /* Actiontec ISA PNP 56K X2 Fax Modem */ 39 { "AEI1240", 0 }, 40 /* Rockwell 56K ACF II Fax+Data+Voice Modem */ 41 { "AKY1021", 0 /*SPCI_FL_NO_SHIRQ*/ }, 42 /* 43 * ALi Fast Infrared Controller 44 * Native driver (ali-ircc) is broken so at least 45 * it can be used with irtty-sir. 46 */ 47 { "ALI5123", 0 }, 48 /* AZT3005 PnP SOUND DEVICE */ 49 { "AZT4001", 0 }, 50 /* Best Data Products Inc. Smart One 336F PnP Modem */ 51 { "BDP3336", 0 }, 52 /* Boca Research */ 53 /* Boca Complete Ofc Communicator 14.4 Data-FAX */ 54 { "BRI0A49", 0 }, 55 /* Boca Research 33,600 ACF Modem */ 56 { "BRI1400", 0 }, 57 /* Boca 33.6 Kbps Internal FD34FSVD */ 58 { "BRI3400", 0 }, 59 /* Boca 33.6 Kbps Internal FD34FSVD */ 60 { "BRI0A49", 0 }, 61 /* Best Data Products Inc. Smart One 336F PnP Modem */ 62 { "BDP3336", 0 }, 63 /* Computer Peripherals Inc */ 64 /* EuroViVa CommCenter-33.6 SP PnP */ 65 { "CPI4050", 0 }, 66 /* Creative Labs */ 67 /* Creative Labs Phone Blaster 28.8 DSVD PnP Voice */ 68 { "CTL3001", 0 }, 69 /* Creative Labs Modem Blaster 28.8 DSVD PnP Voice */ 70 { "CTL3011", 0 }, 71 /* Davicom ISA 33.6K Modem */ 72 { "DAV0336", 0 }, 73 /* Creative */ 74 /* Creative Modem Blaster Flash56 DI5601-1 */ 75 { "DMB1032", 0 }, 76 /* Creative Modem Blaster V.90 DI5660 */ 77 { "DMB2001", 0 }, 78 /* E-Tech */ 79 /* E-Tech CyberBULLET PC56RVP */ 80 { "ETT0002", 0 }, 81 /* FUJITSU */ 82 /* Fujitsu 33600 PnP-I2 R Plug & Play */ 83 { "FUJ0202", 0 }, 84 /* Fujitsu FMV-FX431 Plug & Play */ 85 { "FUJ0205", 0 }, 86 /* Fujitsu 33600 PnP-I4 R Plug & Play */ 87 { "FUJ0206", 0 }, 88 /* Fujitsu Fax Voice 33600 PNP-I5 R Plug & Play */ 89 { "FUJ0209", 0 }, 90 /* Archtek America Corp. */ 91 /* Archtek SmartLink Modem 3334BT Plug & Play */ 92 { "GVC000F", 0 }, 93 /* Archtek SmartLink Modem 3334BRV 33.6K Data Fax Voice */ 94 { "GVC0303", 0 }, 95 /* Hayes */ 96 /* Hayes Optima 288 V.34-V.FC + FAX + Voice Plug & Play */ 97 { "HAY0001", 0 }, 98 /* Hayes Optima 336 V.34 + FAX + Voice PnP */ 99 { "HAY000C", 0 }, 100 /* Hayes Optima 336B V.34 + FAX + Voice PnP */ 101 { "HAY000D", 0 }, 102 /* Hayes Accura 56K Ext Fax Modem PnP */ 103 { "HAY5670", 0 }, 104 /* Hayes Accura 56K Ext Fax Modem PnP */ 105 { "HAY5674", 0 }, 106 /* Hayes Accura 56K Fax Modem PnP */ 107 { "HAY5675", 0 }, 108 /* Hayes 288, V.34 + FAX */ 109 { "HAYF000", 0 }, 110 /* Hayes Optima 288 V.34 + FAX + Voice, Plug & Play */ 111 { "HAYF001", 0 }, 112 /* IBM */ 113 /* IBM Thinkpad 701 Internal Modem Voice */ 114 { "IBM0033", 0 }, 115 /* Intermec */ 116 /* Intermec CV60 touchscreen port */ 117 { "PNP4972", 0 }, 118 /* Intertex */ 119 /* Intertex 28k8 33k6 Voice EXT PnP */ 120 { "IXDC801", 0 }, 121 /* Intertex 33k6 56k Voice EXT PnP */ 122 { "IXDC901", 0 }, 123 /* Intertex 28k8 33k6 Voice SP EXT PnP */ 124 { "IXDD801", 0 }, 125 /* Intertex 33k6 56k Voice SP EXT PnP */ 126 { "IXDD901", 0 }, 127 /* Intertex 28k8 33k6 Voice SP INT PnP */ 128 { "IXDF401", 0 }, 129 /* Intertex 28k8 33k6 Voice SP EXT PnP */ 130 { "IXDF801", 0 }, 131 /* Intertex 33k6 56k Voice SP EXT PnP */ 132 { "IXDF901", 0 }, 133 /* Kortex International */ 134 /* KORTEX 28800 Externe PnP */ 135 { "KOR4522", 0 }, 136 /* KXPro 33.6 Vocal ASVD PnP */ 137 { "KORF661", 0 }, 138 /* Lasat */ 139 /* LASAT Internet 33600 PnP */ 140 { "LAS4040", 0 }, 141 /* Lasat Safire 560 PnP */ 142 { "LAS4540", 0 }, 143 /* Lasat Safire 336 PnP */ 144 { "LAS5440", 0 }, 145 /* Microcom, Inc. */ 146 /* Microcom TravelPorte FAST V.34 Plug & Play */ 147 { "MNP0281", 0 }, 148 /* Microcom DeskPorte V.34 FAST or FAST+ Plug & Play */ 149 { "MNP0336", 0 }, 150 /* Microcom DeskPorte FAST EP 28.8 Plug & Play */ 151 { "MNP0339", 0 }, 152 /* Microcom DeskPorte 28.8P Plug & Play */ 153 { "MNP0342", 0 }, 154 /* Microcom DeskPorte FAST ES 28.8 Plug & Play */ 155 { "MNP0500", 0 }, 156 /* Microcom DeskPorte FAST ES 28.8 Plug & Play */ 157 { "MNP0501", 0 }, 158 /* Microcom DeskPorte 28.8S Internal Plug & Play */ 159 { "MNP0502", 0 }, 160 /* Motorola */ 161 /* Motorola BitSURFR Plug & Play */ 162 { "MOT1105", 0 }, 163 /* Motorola TA210 Plug & Play */ 164 { "MOT1111", 0 }, 165 /* Motorola HMTA 200 (ISDN) Plug & Play */ 166 { "MOT1114", 0 }, 167 /* Motorola BitSURFR Plug & Play */ 168 { "MOT1115", 0 }, 169 /* Motorola Lifestyle 28.8 Internal */ 170 { "MOT1190", 0 }, 171 /* Motorola V.3400 Plug & Play */ 172 { "MOT1501", 0 }, 173 /* Motorola Lifestyle 28.8 V.34 Plug & Play */ 174 { "MOT1502", 0 }, 175 /* Motorola Power 28.8 V.34 Plug & Play */ 176 { "MOT1505", 0 }, 177 /* Motorola ModemSURFR External 28.8 Plug & Play */ 178 { "MOT1509", 0 }, 179 /* Motorola Premier 33.6 Desktop Plug & Play */ 180 { "MOT150A", 0 }, 181 /* Motorola VoiceSURFR 56K External PnP */ 182 { "MOT150F", 0 }, 183 /* Motorola ModemSURFR 56K External PnP */ 184 { "MOT1510", 0 }, 185 /* Motorola ModemSURFR 56K Internal PnP */ 186 { "MOT1550", 0 }, 187 /* Motorola ModemSURFR Internal 28.8 Plug & Play */ 188 { "MOT1560", 0 }, 189 /* Motorola Premier 33.6 Internal Plug & Play */ 190 { "MOT1580", 0 }, 191 /* Motorola OnlineSURFR 28.8 Internal Plug & Play */ 192 { "MOT15B0", 0 }, 193 /* Motorola VoiceSURFR 56K Internal PnP */ 194 { "MOT15F0", 0 }, 195 /* Com 1 */ 196 /* Deskline K56 Phone System PnP */ 197 { "MVX00A1", 0 }, 198 /* PC Rider K56 Phone System PnP */ 199 { "MVX00F2", 0 }, 200 /* NEC 98NOTE SPEAKER PHONE FAX MODEM(33600bps) */ 201 { "nEC8241", 0 }, 202 /* Pace 56 Voice Internal Plug & Play Modem */ 203 { "PMC2430", 0 }, 204 /* Generic */ 205 /* Generic standard PC COM port */ 206 { "PNP0500", 0 }, 207 /* Generic 16550A-compatible COM port */ 208 { "PNP0501", 0 }, 209 /* Compaq 14400 Modem */ 210 { "PNPC000", 0 }, 211 /* Compaq 2400/9600 Modem */ 212 { "PNPC001", 0 }, 213 /* Dial-Up Networking Serial Cable between 2 PCs */ 214 { "PNPC031", 0 }, 215 /* Dial-Up Networking Parallel Cable between 2 PCs */ 216 { "PNPC032", 0 }, 217 /* Standard 9600 bps Modem */ 218 { "PNPC100", 0 }, 219 /* Standard 14400 bps Modem */ 220 { "PNPC101", 0 }, 221 /* Standard 28800 bps Modem*/ 222 { "PNPC102", 0 }, 223 /* Standard Modem*/ 224 { "PNPC103", 0 }, 225 /* Standard 9600 bps Modem*/ 226 { "PNPC104", 0 }, 227 /* Standard 14400 bps Modem*/ 228 { "PNPC105", 0 }, 229 /* Standard 28800 bps Modem*/ 230 { "PNPC106", 0 }, 231 /* Standard Modem */ 232 { "PNPC107", 0 }, 233 /* Standard 9600 bps Modem */ 234 { "PNPC108", 0 }, 235 /* Standard 14400 bps Modem */ 236 { "PNPC109", 0 }, 237 /* Standard 28800 bps Modem */ 238 { "PNPC10A", 0 }, 239 /* Standard Modem */ 240 { "PNPC10B", 0 }, 241 /* Standard 9600 bps Modem */ 242 { "PNPC10C", 0 }, 243 /* Standard 14400 bps Modem */ 244 { "PNPC10D", 0 }, 245 /* Standard 28800 bps Modem */ 246 { "PNPC10E", 0 }, 247 /* Standard Modem */ 248 { "PNPC10F", 0 }, 249 /* Standard PCMCIA Card Modem */ 250 { "PNP2000", 0 }, 251 /* Rockwell */ 252 /* Modular Technology */ 253 /* Rockwell 33.6 DPF Internal PnP */ 254 /* Modular Technology 33.6 Internal PnP */ 255 { "ROK0030", 0 }, 256 /* Kortex International */ 257 /* KORTEX 14400 Externe PnP */ 258 { "ROK0100", 0 }, 259 /* Rockwell 28.8 */ 260 { "ROK4120", 0 }, 261 /* Viking Components, Inc */ 262 /* Viking 28.8 INTERNAL Fax+Data+Voice PnP */ 263 { "ROK4920", 0 }, 264 /* Rockwell */ 265 /* British Telecom */ 266 /* Modular Technology */ 267 /* Rockwell 33.6 DPF External PnP */ 268 /* BT Prologue 33.6 External PnP */ 269 /* Modular Technology 33.6 External PnP */ 270 { "RSS00A0", 0 }, 271 /* Viking 56K FAX INT */ 272 { "RSS0262", 0 }, 273 /* K56 par,VV,Voice,Speakphone,AudioSpan,PnP */ 274 { "RSS0250", 0 }, 275 /* SupraExpress 28.8 Data/Fax PnP modem */ 276 { "SUP1310", 0 }, 277 /* SupraExpress 336i PnP Voice Modem */ 278 { "SUP1381", 0 }, 279 /* SupraExpress 33.6 Data/Fax PnP modem */ 280 { "SUP1421", 0 }, 281 /* SupraExpress 33.6 Data/Fax PnP modem */ 282 { "SUP1590", 0 }, 283 /* SupraExpress 336i Sp ASVD */ 284 { "SUP1620", 0 }, 285 /* SupraExpress 33.6 Data/Fax PnP modem */ 286 { "SUP1760", 0 }, 287 /* SupraExpress 56i Sp Intl */ 288 { "SUP2171", 0 }, 289 /* Phoebe Micro */ 290 /* Phoebe Micro 33.6 Data Fax 1433VQH Plug & Play */ 291 { "TEX0011", 0 }, 292 /* Archtek America Corp. */ 293 /* Archtek SmartLink Modem 3334BT Plug & Play */ 294 { "UAC000F", 0 }, 295 /* 3Com Corp. */ 296 /* Gateway Telepath IIvi 33.6 */ 297 { "USR0000", 0 }, 298 /* U.S. Robotics Sporster 33.6K Fax INT PnP */ 299 { "USR0002", 0 }, 300 /* Sportster Vi 14.4 PnP FAX Voicemail */ 301 { "USR0004", 0 }, 302 /* U.S. Robotics 33.6K Voice INT PnP */ 303 { "USR0006", 0 }, 304 /* U.S. Robotics 33.6K Voice EXT PnP */ 305 { "USR0007", 0 }, 306 /* U.S. Robotics Courier V.Everything INT PnP */ 307 { "USR0009", 0 }, 308 /* U.S. Robotics 33.6K Voice INT PnP */ 309 { "USR2002", 0 }, 310 /* U.S. Robotics 56K Voice INT PnP */ 311 { "USR2070", 0 }, 312 /* U.S. Robotics 56K Voice EXT PnP */ 313 { "USR2080", 0 }, 314 /* U.S. Robotics 56K FAX INT */ 315 { "USR3031", 0 }, 316 /* U.S. Robotics 56K FAX INT */ 317 { "USR3050", 0 }, 318 /* U.S. Robotics 56K Voice INT PnP */ 319 { "USR3070", 0 }, 320 /* U.S. Robotics 56K Voice EXT PnP */ 321 { "USR3080", 0 }, 322 /* U.S. Robotics 56K Voice INT PnP */ 323 { "USR3090", 0 }, 324 /* U.S. Robotics 56K Message */ 325 { "USR9100", 0 }, 326 /* U.S. Robotics 56K FAX EXT PnP*/ 327 { "USR9160", 0 }, 328 /* U.S. Robotics 56K FAX INT PnP*/ 329 { "USR9170", 0 }, 330 /* U.S. Robotics 56K Voice EXT PnP*/ 331 { "USR9180", 0 }, 332 /* U.S. Robotics 56K Voice INT PnP*/ 333 { "USR9190", 0 }, 334 /* Wacom tablets */ 335 { "WACFXXX", 0 }, 336 /* Compaq touchscreen */ 337 { "FPI2002", 0 }, 338 /* Fujitsu Stylistic touchscreens */ 339 { "FUJ02B2", 0 }, 340 { "FUJ02B3", 0 }, 341 /* Fujitsu Stylistic LT touchscreens */ 342 { "FUJ02B4", 0 }, 343 /* Passive Fujitsu Stylistic touchscreens */ 344 { "FUJ02B6", 0 }, 345 { "FUJ02B7", 0 }, 346 { "FUJ02B8", 0 }, 347 { "FUJ02B9", 0 }, 348 { "FUJ02BC", 0 }, 349 /* Fujitsu Wacom Tablet PC device */ 350 { "FUJ02E5", 0 }, 351 /* Fujitsu P-series tablet PC device */ 352 { "FUJ02E6", 0 }, 353 /* Fujitsu Wacom 2FGT Tablet PC device */ 354 { "FUJ02E7", 0 }, 355 /* Fujitsu Wacom 1FGT Tablet PC device */ 356 { "FUJ02E9", 0 }, 357 /* 358 * LG C1 EXPRESS DUAL (C1-PB11A3) touch screen (actually a FUJ02E6 359 * in disguise). 360 */ 361 { "LTS0001", 0 }, 362 /* Rockwell's (PORALiNK) 33600 INT PNP */ 363 { "WCI0003", 0 }, 364 /* Unknown PnP modems */ 365 { "PNPCXXX", UNKNOWN_DEV }, 366 /* More unknown PnP modems */ 367 { "PNPDXXX", UNKNOWN_DEV }, 368 /* 369 * Winbond CIR port, should not be probed. We should keep track of 370 * it to prevent the legacy serial driver from probing it. 371 */ 372 { "WEC1022", CIR_PORT }, 373 /* 374 * SMSC IrCC SIR/FIR port, should not be probed by serial driver as 375 * well so its own driver can bind to it. 376 */ 377 { "SMCF010", CIR_PORT }, 378 { "", 0 } 379 }; 380 381 MODULE_DEVICE_TABLE(pnp, pnp_dev_table); 382 383 static const char *modem_names[] = { 384 "MODEM", "Modem", "modem", "FAX", "Fax", "fax", 385 "56K", "56k", "K56", "33.6", "28.8", "14.4", 386 "33,600", "28,800", "14,400", "33.600", "28.800", "14.400", 387 "33600", "28800", "14400", "V.90", "V.34", "V.32", NULL 388 }; 389 390 static bool check_name(const char *name) 391 { 392 const char **tmp; 393 394 for (tmp = modem_names; *tmp; tmp++) 395 if (strstr(name, *tmp)) 396 return true; 397 398 return false; 399 } 400 401 static bool check_resources(struct pnp_dev *dev) 402 { 403 static const resource_size_t base[] = {0x2f8, 0x3f8, 0x2e8, 0x3e8}; 404 unsigned int i; 405 406 for (i = 0; i < ARRAY_SIZE(base); i++) { 407 if (pnp_possible_config(dev, IORESOURCE_IO, base[i], 8)) 408 return true; 409 } 410 411 return false; 412 } 413 414 /* 415 * Given a complete unknown PnP device, try to use some heuristics to 416 * detect modems. Currently use such heuristic set: 417 * - dev->name or dev->bus->name must contain "modem" substring; 418 * - device must have only one IO region (8 byte long) with base address 419 * 0x2e8, 0x3e8, 0x2f8 or 0x3f8. 420 * 421 * Such detection looks very ugly, but can detect at least some of numerous 422 * PnP modems, alternatively we must hardcode all modems in pnp_devices[] 423 * table. 424 */ 425 static int serial_pnp_guess_board(struct pnp_dev *dev) 426 { 427 if (!(check_name(pnp_dev_name(dev)) || 428 (dev->card && check_name(dev->card->name)))) 429 return -ENODEV; 430 431 if (check_resources(dev)) 432 return 0; 433 434 return -ENODEV; 435 } 436 437 static int 438 serial_pnp_probe(struct pnp_dev *dev, const struct pnp_device_id *dev_id) 439 { 440 struct uart_8250_port uart, *port; 441 int ret, line, flags = dev_id->driver_data; 442 443 if (flags & UNKNOWN_DEV) { 444 ret = serial_pnp_guess_board(dev); 445 if (ret < 0) 446 return ret; 447 } 448 449 memset(&uart, 0, sizeof(uart)); 450 if (pnp_irq_valid(dev, 0)) 451 uart.port.irq = pnp_irq(dev, 0); 452 if ((flags & CIR_PORT) && pnp_port_valid(dev, 2)) { 453 uart.port.iobase = pnp_port_start(dev, 2); 454 uart.port.iotype = UPIO_PORT; 455 } else if (pnp_port_valid(dev, 0)) { 456 uart.port.iobase = pnp_port_start(dev, 0); 457 uart.port.iotype = UPIO_PORT; 458 } else if (pnp_mem_valid(dev, 0)) { 459 uart.port.mapbase = pnp_mem_start(dev, 0); 460 uart.port.iotype = UPIO_MEM; 461 uart.port.flags = UPF_IOREMAP; 462 } else 463 return -ENODEV; 464 465 dev_dbg(&dev->dev, 466 "Setup PNP port: port %#lx, mem %#llx, irq %u, type %u\n", 467 uart.port.iobase, (unsigned long long)uart.port.mapbase, 468 uart.port.irq, uart.port.iotype); 469 470 if (flags & CIR_PORT) { 471 uart.port.flags |= UPF_FIXED_PORT | UPF_FIXED_TYPE; 472 uart.port.type = PORT_8250_CIR; 473 } 474 475 uart.port.flags |= UPF_SKIP_TEST | UPF_BOOT_AUTOCONF; 476 if (pnp_irq_flags(dev, 0) & IORESOURCE_IRQ_SHAREABLE) 477 uart.port.flags |= UPF_SHARE_IRQ; 478 uart.port.uartclk = 1843200; 479 device_property_read_u32(&dev->dev, "clock-frequency", &uart.port.uartclk); 480 uart.port.dev = &dev->dev; 481 482 line = serial8250_register_8250_port(&uart); 483 if (line < 0 || (flags & CIR_PORT)) 484 return -ENODEV; 485 486 port = serial8250_get_port(line); 487 if (uart_console(&port->port)) 488 dev->capabilities |= PNP_CONSOLE; 489 490 pnp_set_drvdata(dev, (void *)((long)line + 1)); 491 return 0; 492 } 493 494 static void serial_pnp_remove(struct pnp_dev *dev) 495 { 496 long line = (long)pnp_get_drvdata(dev); 497 498 dev->capabilities &= ~PNP_CONSOLE; 499 if (line) 500 serial8250_unregister_port(line - 1); 501 } 502 503 static int __maybe_unused serial_pnp_suspend(struct device *dev) 504 { 505 long line = (long)dev_get_drvdata(dev); 506 507 if (!line) 508 return -ENODEV; 509 serial8250_suspend_port(line - 1); 510 return 0; 511 } 512 513 static int __maybe_unused serial_pnp_resume(struct device *dev) 514 { 515 long line = (long)dev_get_drvdata(dev); 516 517 if (!line) 518 return -ENODEV; 519 serial8250_resume_port(line - 1); 520 return 0; 521 } 522 523 static SIMPLE_DEV_PM_OPS(serial_pnp_pm_ops, serial_pnp_suspend, serial_pnp_resume); 524 525 static struct pnp_driver serial_pnp_driver = { 526 .name = "serial", 527 .probe = serial_pnp_probe, 528 .remove = serial_pnp_remove, 529 .driver = { 530 .pm = &serial_pnp_pm_ops, 531 }, 532 .id_table = pnp_dev_table, 533 }; 534 535 int serial8250_pnp_init(void) 536 { 537 return pnp_register_driver(&serial_pnp_driver); 538 } 539 540 void serial8250_pnp_exit(void) 541 { 542 pnp_unregister_driver(&serial_pnp_driver); 543 } 544 545