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1// SPDX-License-Identifier: GPL-2.02/*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/pm.h>14#include <linux/pnp.h>15#include <linux/string.h>16#include <linux/kernel.h>17#include <linux/property.h>18#include <linux/serial_core.h>19#include <linux/bitops.h>20 21#include <asm/byteorder.h>22 23#include "8250.h"24 25#define UNKNOWN_DEV 0x300026#define CIR_PORT 0x080027 28static const struct pnp_device_id pnp_dev_table[] = {29 /* Archtek America Corp. */30 /* Archtek SmartLink Modem 3334BT Plug & Play */31 { "AAC000F", 0 },32 /* Anchor Datacomm BV */33 /* SXPro 144 External Data Fax Modem Plug & Play */34 { "ADC0001", 0 },35 /* SXPro 288 External Data Fax Modem Plug & Play */36 { "ADC0002", 0 },37 /* PROLiNK 1456VH ISA PnP K56flex Fax Modem */38 { "AEI0250", 0 },39 /* Actiontec ISA PNP 56K X2 Fax Modem */40 { "AEI1240", 0 },41 /* Rockwell 56K ACF II Fax+Data+Voice Modem */42 { "AKY1021", 0 /*SPCI_FL_NO_SHIRQ*/ },43 /*44 * ALi Fast Infrared Controller45 * Native driver (ali-ircc) is broken so at least46 * it can be used with irtty-sir.47 */48 { "ALI5123", 0 },49 /* AZT3005 PnP SOUND DEVICE */50 { "AZT4001", 0 },51 /* Best Data Products Inc. Smart One 336F PnP Modem */52 { "BDP3336", 0 },53 /* Boca Research */54 /* Boca Complete Ofc Communicator 14.4 Data-FAX */55 { "BRI0A49", 0 },56 /* Boca Research 33,600 ACF Modem */57 { "BRI1400", 0 },58 /* Boca 33.6 Kbps Internal FD34FSVD */59 { "BRI3400", 0 },60 /* Computer Peripherals Inc */61 /* EuroViVa CommCenter-33.6 SP PnP */62 { "CPI4050", 0 },63 /* Creative Labs */64 /* Creative Labs Phone Blaster 28.8 DSVD PnP Voice */65 { "CTL3001", 0 },66 /* Creative Labs Modem Blaster 28.8 DSVD PnP Voice */67 { "CTL3011", 0 },68 /* Davicom ISA 33.6K Modem */69 { "DAV0336", 0 },70 /* Creative */71 /* Creative Modem Blaster Flash56 DI5601-1 */72 { "DMB1032", 0 },73 /* Creative Modem Blaster V.90 DI5660 */74 { "DMB2001", 0 },75 /* E-Tech */76 /* E-Tech CyberBULLET PC56RVP */77 { "ETT0002", 0 },78 /* FUJITSU */79 /* Fujitsu 33600 PnP-I2 R Plug & Play */80 { "FUJ0202", 0 },81 /* Fujitsu FMV-FX431 Plug & Play */82 { "FUJ0205", 0 },83 /* Fujitsu 33600 PnP-I4 R Plug & Play */84 { "FUJ0206", 0 },85 /* Fujitsu Fax Voice 33600 PNP-I5 R Plug & Play */86 { "FUJ0209", 0 },87 /* Archtek America Corp. */88 /* Archtek SmartLink Modem 3334BT Plug & Play */89 { "GVC000F", 0 },90 /* Archtek SmartLink Modem 3334BRV 33.6K Data Fax Voice */91 { "GVC0303", 0 },92 /* Hayes */93 /* Hayes Optima 288 V.34-V.FC + FAX + Voice Plug & Play */94 { "HAY0001", 0 },95 /* Hayes Optima 336 V.34 + FAX + Voice PnP */96 { "HAY000C", 0 },97 /* Hayes Optima 336B V.34 + FAX + Voice PnP */98 { "HAY000D", 0 },99 /* Hayes Accura 56K Ext Fax Modem PnP */100 { "HAY5670", 0 },101 /* Hayes Accura 56K Ext Fax Modem PnP */102 { "HAY5674", 0 },103 /* Hayes Accura 56K Fax Modem PnP */104 { "HAY5675", 0 },105 /* Hayes 288, V.34 + FAX */106 { "HAYF000", 0 },107 /* Hayes Optima 288 V.34 + FAX + Voice, Plug & Play */108 { "HAYF001", 0 },109 /* IBM */110 /* IBM Thinkpad 701 Internal Modem Voice */111 { "IBM0033", 0 },112 /* Intermec */113 /* Intermec CV60 touchscreen port */114 { "PNP4972", 0 },115 /* Intertex */116 /* Intertex 28k8 33k6 Voice EXT PnP */117 { "IXDC801", 0 },118 /* Intertex 33k6 56k Voice EXT PnP */119 { "IXDC901", 0 },120 /* Intertex 28k8 33k6 Voice SP EXT PnP */121 { "IXDD801", 0 },122 /* Intertex 33k6 56k Voice SP EXT PnP */123 { "IXDD901", 0 },124 /* Intertex 28k8 33k6 Voice SP INT PnP */125 { "IXDF401", 0 },126 /* Intertex 28k8 33k6 Voice SP EXT PnP */127 { "IXDF801", 0 },128 /* Intertex 33k6 56k Voice SP EXT PnP */129 { "IXDF901", 0 },130 /* Kortex International */131 /* KORTEX 28800 Externe PnP */132 { "KOR4522", 0 },133 /* KXPro 33.6 Vocal ASVD PnP */134 { "KORF661", 0 },135 /* Lasat */136 /* LASAT Internet 33600 PnP */137 { "LAS4040", 0 },138 /* Lasat Safire 560 PnP */139 { "LAS4540", 0 },140 /* Lasat Safire 336 PnP */141 { "LAS5440", 0 },142 /* Microcom, Inc. */143 /* Microcom TravelPorte FAST V.34 Plug & Play */144 { "MNP0281", 0 },145 /* Microcom DeskPorte V.34 FAST or FAST+ Plug & Play */146 { "MNP0336", 0 },147 /* Microcom DeskPorte FAST EP 28.8 Plug & Play */148 { "MNP0339", 0 },149 /* Microcom DeskPorte 28.8P Plug & Play */150 { "MNP0342", 0 },151 /* Microcom DeskPorte FAST ES 28.8 Plug & Play */152 { "MNP0500", 0 },153 /* Microcom DeskPorte FAST ES 28.8 Plug & Play */154 { "MNP0501", 0 },155 /* Microcom DeskPorte 28.8S Internal Plug & Play */156 { "MNP0502", 0 },157 /* Motorola */158 /* Motorola BitSURFR Plug & Play */159 { "MOT1105", 0 },160 /* Motorola TA210 Plug & Play */161 { "MOT1111", 0 },162 /* Motorola HMTA 200 (ISDN) Plug & Play */163 { "MOT1114", 0 },164 /* Motorola BitSURFR Plug & Play */165 { "MOT1115", 0 },166 /* Motorola Lifestyle 28.8 Internal */167 { "MOT1190", 0 },168 /* Motorola V.3400 Plug & Play */169 { "MOT1501", 0 },170 /* Motorola Lifestyle 28.8 V.34 Plug & Play */171 { "MOT1502", 0 },172 /* Motorola Power 28.8 V.34 Plug & Play */173 { "MOT1505", 0 },174 /* Motorola ModemSURFR External 28.8 Plug & Play */175 { "MOT1509", 0 },176 /* Motorola Premier 33.6 Desktop Plug & Play */177 { "MOT150A", 0 },178 /* Motorola VoiceSURFR 56K External PnP */179 { "MOT150F", 0 },180 /* Motorola ModemSURFR 56K External PnP */181 { "MOT1510", 0 },182 /* Motorola ModemSURFR 56K Internal PnP */183 { "MOT1550", 0 },184 /* Motorola ModemSURFR Internal 28.8 Plug & Play */185 { "MOT1560", 0 },186 /* Motorola Premier 33.6 Internal Plug & Play */187 { "MOT1580", 0 },188 /* Motorola OnlineSURFR 28.8 Internal Plug & Play */189 { "MOT15B0", 0 },190 /* Motorola VoiceSURFR 56K Internal PnP */191 { "MOT15F0", 0 },192 /* Com 1 */193 /* Deskline K56 Phone System PnP */194 { "MVX00A1", 0 },195 /* PC Rider K56 Phone System PnP */196 { "MVX00F2", 0 },197 /* NEC 98NOTE SPEAKER PHONE FAX MODEM(33600bps) */198 { "nEC8241", 0 },199 /* Pace 56 Voice Internal Plug & Play Modem */200 { "PMC2430", 0 },201 /* Generic */202 /* Generic standard PC COM port */203 { "PNP0500", 0 },204 /* Generic 16550A-compatible COM port */205 { "PNP0501", 0 },206 /* Compaq 14400 Modem */207 { "PNPC000", 0 },208 /* Compaq 2400/9600 Modem */209 { "PNPC001", 0 },210 /* Dial-Up Networking Serial Cable between 2 PCs */211 { "PNPC031", 0 },212 /* Dial-Up Networking Parallel Cable between 2 PCs */213 { "PNPC032", 0 },214 /* Standard 9600 bps Modem */215 { "PNPC100", 0 },216 /* Standard 14400 bps Modem */217 { "PNPC101", 0 },218 /* Standard 28800 bps Modem*/219 { "PNPC102", 0 },220 /* Standard Modem*/221 { "PNPC103", 0 },222 /* Standard 9600 bps Modem*/223 { "PNPC104", 0 },224 /* Standard 14400 bps Modem*/225 { "PNPC105", 0 },226 /* Standard 28800 bps Modem*/227 { "PNPC106", 0 },228 /* Standard Modem */229 { "PNPC107", 0 },230 /* Standard 9600 bps Modem */231 { "PNPC108", 0 },232 /* Standard 14400 bps Modem */233 { "PNPC109", 0 },234 /* Standard 28800 bps Modem */235 { "PNPC10A", 0 },236 /* Standard Modem */237 { "PNPC10B", 0 },238 /* Standard 9600 bps Modem */239 { "PNPC10C", 0 },240 /* Standard 14400 bps Modem */241 { "PNPC10D", 0 },242 /* Standard 28800 bps Modem */243 { "PNPC10E", 0 },244 /* Standard Modem */245 { "PNPC10F", 0 },246 /* Standard PCMCIA Card Modem */247 { "PNP2000", 0 },248 /* Rockwell */249 /* Modular Technology */250 /* Rockwell 33.6 DPF Internal PnP */251 /* Modular Technology 33.6 Internal PnP */252 { "ROK0030", 0 },253 /* Kortex International */254 /* KORTEX 14400 Externe PnP */255 { "ROK0100", 0 },256 /* Rockwell 28.8 */257 { "ROK4120", 0 },258 /* Viking Components, Inc */259 /* Viking 28.8 INTERNAL Fax+Data+Voice PnP */260 { "ROK4920", 0 },261 /* Rockwell */262 /* British Telecom */263 /* Modular Technology */264 /* Rockwell 33.6 DPF External PnP */265 /* BT Prologue 33.6 External PnP */266 /* Modular Technology 33.6 External PnP */267 { "RSS00A0", 0 },268 /* Viking 56K FAX INT */269 { "RSS0262", 0 },270 /* K56 par,VV,Voice,Speakphone,AudioSpan,PnP */271 { "RSS0250", 0 },272 /* SupraExpress 28.8 Data/Fax PnP modem */273 { "SUP1310", 0 },274 /* SupraExpress 336i PnP Voice Modem */275 { "SUP1381", 0 },276 /* SupraExpress 33.6 Data/Fax PnP modem */277 { "SUP1421", 0 },278 /* SupraExpress 33.6 Data/Fax PnP modem */279 { "SUP1590", 0 },280 /* SupraExpress 336i Sp ASVD */281 { "SUP1620", 0 },282 /* SupraExpress 33.6 Data/Fax PnP modem */283 { "SUP1760", 0 },284 /* SupraExpress 56i Sp Intl */285 { "SUP2171", 0 },286 /* Phoebe Micro */287 /* Phoebe Micro 33.6 Data Fax 1433VQH Plug & Play */288 { "TEX0011", 0 },289 /* Archtek America Corp. */290 /* Archtek SmartLink Modem 3334BT Plug & Play */291 { "UAC000F", 0 },292 /* 3Com Corp. */293 /* Gateway Telepath IIvi 33.6 */294 { "USR0000", 0 },295 /* U.S. Robotics Sporster 33.6K Fax INT PnP */296 { "USR0002", 0 },297 /* Sportster Vi 14.4 PnP FAX Voicemail */298 { "USR0004", 0 },299 /* U.S. Robotics 33.6K Voice INT PnP */300 { "USR0006", 0 },301 /* U.S. Robotics 33.6K Voice EXT PnP */302 { "USR0007", 0 },303 /* U.S. Robotics Courier V.Everything INT PnP */304 { "USR0009", 0 },305 /* U.S. Robotics 33.6K Voice INT PnP */306 { "USR2002", 0 },307 /* U.S. Robotics 56K Voice INT PnP */308 { "USR2070", 0 },309 /* U.S. Robotics 56K Voice EXT PnP */310 { "USR2080", 0 },311 /* U.S. Robotics 56K FAX INT */312 { "USR3031", 0 },313 /* U.S. Robotics 56K FAX INT */314 { "USR3050", 0 },315 /* U.S. Robotics 56K Voice INT PnP */316 { "USR3070", 0 },317 /* U.S. Robotics 56K Voice EXT PnP */318 { "USR3080", 0 },319 /* U.S. Robotics 56K Voice INT PnP */320 { "USR3090", 0 },321 /* U.S. Robotics 56K Message */322 { "USR9100", 0 },323 /* U.S. Robotics 56K FAX EXT PnP*/324 { "USR9160", 0 },325 /* U.S. Robotics 56K FAX INT PnP*/326 { "USR9170", 0 },327 /* U.S. Robotics 56K Voice EXT PnP*/328 { "USR9180", 0 },329 /* U.S. Robotics 56K Voice INT PnP*/330 { "USR9190", 0 },331 /* Wacom tablets */332 { "WACFXXX", 0 },333 /* Compaq touchscreen */334 { "FPI2002", 0 },335 /* Fujitsu Stylistic touchscreens */336 { "FUJ02B2", 0 },337 { "FUJ02B3", 0 },338 /* Fujitsu Stylistic LT touchscreens */339 { "FUJ02B4", 0 },340 /* Passive Fujitsu Stylistic touchscreens */341 { "FUJ02B6", 0 },342 { "FUJ02B7", 0 },343 { "FUJ02B8", 0 },344 { "FUJ02B9", 0 },345 { "FUJ02BC", 0 },346 /* Fujitsu Wacom Tablet PC device */347 { "FUJ02E5", 0 },348 /* Fujitsu P-series tablet PC device */349 { "FUJ02E6", 0 },350 /* Fujitsu Wacom 2FGT Tablet PC device */351 { "FUJ02E7", 0 },352 /* Fujitsu Wacom 1FGT Tablet PC device */353 { "FUJ02E9", 0 },354 /*355 * LG C1 EXPRESS DUAL (C1-PB11A3) touch screen (actually a FUJ02E6356 * in disguise).357 */358 { "LTS0001", 0 },359 /* Rockwell's (PORALiNK) 33600 INT PNP */360 { "WCI0003", 0 },361 /* Unknown PnP modems */362 { "PNPCXXX", UNKNOWN_DEV },363 /* More unknown PnP modems */364 { "PNPDXXX", UNKNOWN_DEV },365 /*366 * Winbond CIR port, should not be probed. We should keep track of367 * it to prevent the legacy serial driver from probing it.368 */369 { "WEC1022", CIR_PORT },370 /*371 * SMSC IrCC SIR/FIR port, should not be probed by serial driver as372 * well so its own driver can bind to it.373 */374 { "SMCF010", CIR_PORT },375 { "", 0 }376};377 378MODULE_DEVICE_TABLE(pnp, pnp_dev_table);379 380static const char *modem_names[] = {381 "MODEM", "Modem", "modem", "FAX", "Fax", "fax",382 "56K", "56k", "K56", "33.6", "28.8", "14.4",383 "33,600", "28,800", "14,400", "33.600", "28.800", "14.400",384 "33600", "28800", "14400", "V.90", "V.34", "V.32", NULL385};386 387static bool check_name(const char *name)388{389 const char **tmp;390 391 for (tmp = modem_names; *tmp; tmp++)392 if (strstr(name, *tmp))393 return true;394 395 return false;396}397 398static bool check_resources(struct pnp_dev *dev)399{400 static const resource_size_t base[] = {0x2f8, 0x3f8, 0x2e8, 0x3e8};401 unsigned int i;402 403 for (i = 0; i < ARRAY_SIZE(base); i++) {404 if (pnp_possible_config(dev, IORESOURCE_IO, base[i], 8))405 return true;406 }407 408 return false;409}410 411/*412 * Given a complete unknown PnP device, try to use some heuristics to413 * detect modems. Currently use such heuristic set:414 * - dev->name or dev->bus->name must contain "modem" substring;415 * - device must have only one IO region (8 byte long) with base address416 * 0x2e8, 0x3e8, 0x2f8 or 0x3f8.417 *418 * Such detection looks very ugly, but can detect at least some of numerous419 * PnP modems, alternatively we must hardcode all modems in pnp_devices[]420 * table.421 */422static int serial_pnp_guess_board(struct pnp_dev *dev)423{424 if (!(check_name(pnp_dev_name(dev)) ||425 (dev->card && check_name(dev->card->name))))426 return -ENODEV;427 428 if (check_resources(dev))429 return 0;430 431 return -ENODEV;432}433 434static int435serial_pnp_probe(struct pnp_dev *dev, const struct pnp_device_id *dev_id)436{437 struct uart_8250_port uart, *port;438 int ret, flags = dev_id->driver_data;439 unsigned char iotype;440 long line;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 ((flags & CIR_PORT) && pnp_port_valid(dev, 2)) {450 uart.port.iobase = pnp_port_start(dev, 2);451 iotype = UPIO_PORT;452 } else if (pnp_port_valid(dev, 0)) {453 uart.port.iobase = pnp_port_start(dev, 0);454 iotype = UPIO_PORT;455 } else if (pnp_mem_valid(dev, 0)) {456 uart.port.mapbase = pnp_mem_start(dev, 0);457 uart.port.mapsize = pnp_mem_len(dev, 0);458 iotype = UPIO_MEM;459 uart.port.flags = UPF_IOREMAP;460 } else461 return -ENODEV;462 463 uart.port.uartclk = 1843200;464 uart.port.dev = &dev->dev;465 uart.port.flags |= UPF_SKIP_TEST | UPF_BOOT_AUTOCONF;466 467 ret = uart_read_port_properties(&uart.port);468 /* no interrupt -> fall back to polling */469 if (ret == -ENXIO)470 ret = 0;471 if (ret)472 return ret;473 474 /*475 * The previous call may not set iotype correctly when reg-io-width476 * property is absent and it doesn't support IO port resource.477 */478 uart.port.iotype = iotype;479 480 if (flags & CIR_PORT) {481 uart.port.flags |= UPF_FIXED_PORT | UPF_FIXED_TYPE;482 uart.port.type = PORT_8250_CIR;483 }484 485 dev_dbg(&dev->dev,486 "Setup PNP port: port %#lx, mem %#llx, size %#llx, irq %u, type %u\n",487 uart.port.iobase, (unsigned long long)uart.port.mapbase,488 (unsigned long long)uart.port.mapsize, uart.port.irq, uart.port.iotype);489 490 line = serial8250_register_8250_port(&uart);491 if (line < 0 || (flags & CIR_PORT))492 return -ENODEV;493 494 port = serial8250_get_port(line);495 if (uart_console(&port->port))496 dev->capabilities |= PNP_CONSOLE;497 498 pnp_set_drvdata(dev, (void *)line);499 return 0;500}501 502static void serial_pnp_remove(struct pnp_dev *dev)503{504 long line = (long)pnp_get_drvdata(dev);505 506 dev->capabilities &= ~PNP_CONSOLE;507 serial8250_unregister_port(line);508}509 510static int serial_pnp_suspend(struct device *dev)511{512 long line = (long)dev_get_drvdata(dev);513 514 serial8250_suspend_port(line);515 return 0;516}517 518static int serial_pnp_resume(struct device *dev)519{520 long line = (long)dev_get_drvdata(dev);521 522 serial8250_resume_port(line);523 return 0;524}525 526static DEFINE_SIMPLE_DEV_PM_OPS(serial_pnp_pm_ops, serial_pnp_suspend, serial_pnp_resume);527 528static struct pnp_driver serial_pnp_driver = {529 .name = "serial",530 .probe = serial_pnp_probe,531 .remove = serial_pnp_remove,532 .driver = {533 .pm = pm_sleep_ptr(&serial_pnp_pm_ops),534 },535 .id_table = pnp_dev_table,536};537 538int serial8250_pnp_init(void)539{540 return pnp_register_driver(&serial_pnp_driver);541}542 543void serial8250_pnp_exit(void)544{545 pnp_unregister_driver(&serial_pnp_driver);546}547 548