/* *  linux/drivers/char/serial_8250_pnp.c * *  Probe module for 8250/16550-type ISAPNP serial ports. * *  Based on drivers/char/serial.c, by Linus Torvalds, Theodore Ts'o. * *  Copyright (C) 2001 Russell King, All Rights Reserved. * * This program is free software; you can redistribute it and/or modify * it under the terms of the GNU General Public License as published by * the Free Software Foundation; either version 2 of the License. * *  $Id: 8250_pnp.c,v 1.3.2.1 2002/10/24 09:53:25 rmk Exp $ */#include <linux/config.h>#include <linux/module.h>#include <linux/init.h>#include <linux/pci.h>#include <linux/isapnp.h>#include <linux/string.h>#include <linux/kernel.h>#include <linux/serial.h>#include <linux/serialP.h>#include <asm/bitops.h>#include <asm/byteorder.h>#include <asm/serial.h>#include "serial_8250.h"static struct serial_state rs_table[] = { };#define NR_PORTS 0struct pnpbios_device_id{	char id[8];	unsigned long driver_data;};static const struct pnpbios_device_id pnp_dev_table[] = {	/* Archtek America Corp. */	/* Archtek SmartLink Modem 3334BT Plug & Play */	{	"AAC000F",		0	},	/* Anchor Datacomm BV */	/* SXPro 144 External Data Fax Modem Plug & Play */	{	"ADC0001",		0	},	/* SXPro 288 External Data Fax Modem Plug & Play */	{	"ADC0002",		0	},	/* Rockwell 56K ACF II Fax+Data+Voice Modem */	{	"AKY1021",		SPCI_FL_NO_SHIRQ	},	/* AZT3005 PnP SOUND DEVICE */	{	"AZT4001",		0	},	/* Best Data Products Inc. Smart One 336F PnP Modem */	{	"BDP3336",		0	},	/*  Boca Research */	/* Boca Complete Ofc Communicator 14.4 Data-FAX */	{	"BRI0A49",		0	},	/* Boca Research 33,600 ACF Modem */	{	"BRI1400",		0	},	/* Boca 33.6 Kbps Internal FD34FSVD */	{	"BRI3400",		0	},	/* Boca 33.6 Kbps Internal FD34FSVD */	{	"BRI0A49",		0	},	/* Best Data Products Inc. Smart One 336F PnP Modem */	{	"BDP3336",		0	},	/* Computer Peripherals Inc */	/* EuroViVa CommCenter-33.6 SP PnP */	{	"CPI4050",		0	},	/* Creative Labs */	/* Creative Labs Phone Blaster 28.8 DSVD PnP Voice */	{	"CTL3001",		0	},	/* Creative Labs Modem Blaster 28.8 DSVD PnP Voice */	{	"CTL3011",		0	},	/* Creative */	/* Creative Modem Blaster Flash56 DI5601-1 */	{	"DMB1032",		0	},	/* Creative Modem Blaster V.90 DI5660 */	{	"DMB2001",		0	},	/* FUJITSU */	/* Fujitsu 33600 PnP-I2 R Plug & Play */	{	"FUJ0202",		0	},	/* Fujitsu FMV-FX431 Plug & Play */	{	"FUJ0205",		0	},	/* Fujitsu 33600 PnP-I4 R Plug & Play */	{	"FUJ0206",		0	},	/* Fujitsu Fax Voice 33600 PNP-I5 R Plug & Play */	{	"FUJ0209",		0	},	/* Archtek America Corp. */	/* Archtek SmartLink Modem 3334BT Plug & Play */	{	"GVC000F",		0	},	/* Hayes */	/* Hayes Optima 288 V.34-V.FC + FAX + Voice Plug & Play */	{	"HAY0001",		0	},	/* Hayes Optima 336 V.34 + FAX + Voice PnP */	{	"HAY000C",		0	},	/* Hayes Optima 336B V.34 + FAX + Voice PnP */	{	"HAY000D",		0	},	/* Hayes Accura 56K Ext Fax Modem PnP */	{	"HAY5670",		0	},	/* Hayes Accura 56K Ext Fax Modem PnP */	{	"HAY5674",		0	},	/* Hayes Accura 56K Fax Modem PnP */	{	"HAY5675",		0	},	/* Hayes 288, V.34 + FAX */	{	"HAYF000",		0	},	/* Hayes Optima 288 V.34 + FAX + Voice, Plug & Play */	{	"HAYF001",		0	},	/* IBM */	/* IBM Thinkpad 701 Internal Modem Voice */	{	"IBM0033",		0	},	/* Intertex */	/* Intertex 28k8 33k6 Voice EXT PnP */	{	"IXDC801",		0	},	/* Intertex 33k6 56k Voice EXT PnP */	{	"IXDC901",		0	},	/* Intertex 28k8 33k6 Voice SP EXT PnP */	{	"IXDD801",		0	},	/* Intertex 33k6 56k Voice SP EXT PnP */	{	"IXDD901",		0	},	/* Intertex 28k8 33k6 Voice SP INT PnP */	{	"IXDF401",		0	},	/* Intertex 28k8 33k6 Voice SP EXT PnP */	{	"IXDF801",		0	},	/* Intertex 33k6 56k Voice SP EXT PnP */	{	"IXDF901",		0	},	/* Kortex International */	/* KORTEX 28800 Externe PnP */	{	"KOR4522",		0	},	/* KXPro 33.6 Vocal ASVD PnP */	{	"KORF661",		0	},	/* Lasat */	/* LASAT Internet 33600 PnP */	{	"LAS4040",		0	},	/* Lasat Safire 560 PnP */	{	"LAS4540",		0	},	/* Lasat Safire 336  PnP */	{	"LAS5440",		0	},	/* Microcom, Inc. */	/* Microcom TravelPorte FAST V.34 Plug & Play */	{	"MNP0281",		0	},	/* Microcom DeskPorte V.34 FAST or FAST+ Plug & Play */	{	"MNP0336",		0	},	/* Microcom DeskPorte FAST EP 28.8 Plug & Play */	{	"MNP0339",		0	},	/* Microcom DeskPorte 28.8P Plug & Play */	{	"MNP0342",		0	},	/* Microcom DeskPorte FAST ES 28.8 Plug & Play */	{	"MNP0500",		0	},	/* Microcom DeskPorte FAST ES 28.8 Plug & Play */	{	"MNP0501",		0	},	/* Microcom DeskPorte 28.8S Internal Plug & Play */	{	"MNP0502",		0	},	/* Motorola */	/* Motorola BitSURFR Plug & Play */	{	"MOT1105",		0	},	/* Motorola TA210 Plug & Play */	{	"MOT1111",		0	},	/* Motorola HMTA 200 (ISDN) Plug & Play */	{	"MOT1114",		0	},	/* Motorola BitSURFR Plug & Play */	{	"MOT1115",		0	},	/* Motorola Lifestyle 28.8 Internal */	{	"MOT1190",		0	},	/* Motorola V.3400 Plug & Play */	{	"MOT1501",		0	},	/* Motorola Lifestyle 28.8 V.34 Plug & Play */	{	"MOT1502",		0	},	/* Motorola Power 28.8 V.34 Plug & Play */	{	"MOT1505",		0	},	/* Motorola ModemSURFR External 28.8 Plug & Play */	{	"MOT1509",		0	},	/* Motorola Premier 33.6 Desktop Plug & Play */	{	"MOT150A",		0	},	/* Motorola VoiceSURFR 56K External PnP */	{	"MOT150F",		0	},	/* Motorola ModemSURFR 56K External PnP */	{	"MOT1510",		0	},	/* Motorola ModemSURFR 56K Internal PnP */	{	"MOT1550",		0	},	/* Motorola ModemSURFR Internal 28.8 Plug & Play */	{	"MOT1560",		0	},	/* Motorola Premier 33.6 Internal Plug & Play */	{	"MOT1580",		0	},	/* Motorola OnlineSURFR 28.8 Internal Plug & Play */	{	"MOT15B0",		0	},	/* Motorola VoiceSURFR 56K Internal PnP */	{	"MOT15F0",		0	},	/* Com 1 */	/*  Deskline K56 Phone System PnP */	{	"MVX00A1",		0	},	/* PC Rider K56 Phone System PnP */	{	"MVX00F2",		0	},	/* Pace 56 Voice Internal Plug & Play Modem */	{	"PMC2430",		0	},	/* Generic */	/* Generic standard PC COM port	 */	{	"PNP0500",		0	},	/* Generic 16550A-compatible COM port */	{	"PNP0501",		0	},	/* Compaq 14400 Modem */	{	"PNPC000",		0	},	/* Compaq 2400/9600 Modem */	{	"PNPC001",		0	},	/* Dial-Up Networking Serial Cable between 2 PCs */	{	"PNPC031",		0	},	/* Dial-Up Networking Parallel Cable between 2 PCs */	{	"PNPC032",		0	},	/* Standard 9600 bps Modem */	{	"PNPC100",		0	},	/* Standard 14400 bps Modem */	{	"PNPC101",		0	},	/*  Standard 28800 bps Modem*/	{	"PNPC102",		0	},	/*  Standard Modem*/	{	"PNPC103",		0	},	/*  Standard 9600 bps Modem*/	{	"PNPC104",		0	},	/*  Standard 14400 bps Modem*/	{	"PNPC105",		0	},	/*  Standard 28800 bps Modem*/	{	"PNPC106",		0	},	/*  Standard Modem */	{	"PNPC107",		0	},	/* Standard 9600 bps Modem */	{	"PNPC108",		0	},	/* Standard 14400 bps Modem */	{	"PNPC109",		0	},	/* Standard 28800 bps Modem */	{	"PNPC10A",		0	},	/* Standard Modem */	{	"PNPC10B",		0	},	/* Standard 9600 bps Modem */	{	"PNPC10C",		0	},	/* Standard 14400 bps Modem */	{	"PNPC10D",		0	},	/* Standard 28800 bps Modem */	{	"PNPC10E",		0	},	/* Standard Modem */	{	"PNPC10F",		0	},	/* Standard PCMCIA Card Modem */	{	"PNP2000",		0	},	/* Rockwell */	/* Modular Technology */	/* Rockwell 33.6 DPF Internal PnP */	/* Modular Technology 33.6 Internal PnP */	{	"ROK0030",		0	},	/* Kortex International */	/* KORTEX 14400 Externe PnP */	{	"ROK0100",		0	},	/* Viking Components, Inc */	/* Viking 28.8 INTERNAL Fax+Data+Voice PnP */	{	"ROK4920",		0	},	/* Rockwell */	/* British Telecom */	/* Modular Technology */	/* Rockwell 33.6 DPF External PnP */	/* BT Prologue 33.6 External PnP */	/* Modular Technology 33.6 External PnP */	{	"RSS00A0",		0	},	/* Viking 56K FAX INT */	{	"RSS0262",		0	},	/* SupraExpress 28.8 Data/Fax PnP modem */	{	"SUP1310",		0	},	/* SupraExpress 33.6 Data/Fax PnP modem */	{	"SUP1421",		0	},	/* SupraExpress 33.6 Data/Fax PnP modem */	{	"SUP1590",		0	},	/* SupraExpress 33.6 Data/Fax PnP modem */	{	"SUP1760",		0	},	/* Phoebe Micro */	/* Phoebe Micro 33.6 Data Fax 1433VQH Plug & Play */	{	"TEX0011",		0	},	/* Archtek America Corp. */	/* Archtek SmartLink Modem 3334BT Plug & Play */	{	"UAC000F",		0	},	/* 3Com Corp. */	/* Gateway Telepath IIvi 33.6 */	{	"USR0000",		0	},	/*  Sportster Vi 14.4 PnP FAX Voicemail */	{	"USR0004",		0	},	/* U.S. Robotics 33.6K Voice INT PnP */	{	"USR0006",		0	},	/* U.S. Robotics 33.6K Voice EXT PnP */	{	"USR0007",		0	},	/* U.S. Robotics 33.6K Voice INT PnP */	{	"USR2002",		0	},	/* U.S. Robotics 56K Voice INT PnP */	{	"USR2070",		0	},	/* U.S. Robotics 56K Voice EXT PnP */	{	"USR2080",		0	},	/* U.S. Robotics 56K FAX INT */	{	"USR3031",		0	},	/* U.S. Robotics 56K Voice INT PnP */	{	"USR3070",		0	},	/* U.S. Robotics 56K Voice EXT PnP */	{	"USR3080",		0	},	/* U.S. Robotics 56K Voice INT PnP */	{	"USR3090",		0	},	/* U.S. Robotics 56K Message  */	{	"USR9100",		0	},	/* U.S. Robotics 56K FAX EXT PnP*/	{	"USR9160",		0	},	/* U.S. Robotics 56K FAX INT PnP*/	{	"USR9170",		0	},	/* U.S. Robotics 56K Voice EXT PnP*/	{	"USR9180",		0	},	/* U.S. Robotics 56K Voice INT PnP*/	{	"USR9190",		0	},	{	"",			0	}};static void inline avoid_irq_share(struct pci_dev *dev){	int i, map = 0x1FF8;	struct serial_state *state = rs_table;	struct isapnp_irq *irq;	struct isapnp_resources *res = dev->sysdata;	for (i = 0; i < NR_PORTS; i++) {		if (state->type != PORT_UNKNOWN)			clear_bit(state->irq, &map);		state++;	}	for ( ; res; res = res->alt)		for(irq = res->irq; irq; irq = irq->next)			irq->map = map;}static char *modem_names[] __devinitdata = {	"MODEM", "Modem", "modem", "FAX", "Fax", "fax",	"56K", "56k", "K56", "33.6", "28.8", "14.4",	"33,600", "28,800", "14,400", "33.600", "28.800", "14.400",	"33600", "28800", "14400", "V.90", "V.34", "V.32", 0};static int __devinit check_name(char *name){	char **tmp;	for (tmp = modem_names; *tmp; tmp++)		if (strstr(name, *tmp))			return 1;	return 0;}static int inline check_compatible_id(struct pci_dev *dev){	int i;	for (i = 0; i < DEVICE_COUNT_COMPATIBLE; i++)		if ((dev->vendor_compatible[i] ==		     ISAPNP_VENDOR('P', 'N', 'P')) &&		    (swab16(dev->device_compatible[i]) >= 0xc000) &&		    (swab16(dev->device_compatible[i]) <= 0xdfff))			return 0;	return 1;}/* * Given a complete unknown ISA PnP device, try to use some heuristics to * detect modems. Currently use such heuristic set: *     - dev->name or dev->bus->name must contain "modem" substring; *     - device must have only one IO region (8 byte long) with base adress *       0x2e8, 0x3e8, 0x2f8 or 0x3f8. * * Such detection looks very ugly, but can detect at least some of numerous * ISA PnP modems, alternatively we must hardcode all modems in pnp_devices[] * table. */static int serial_pnp_guess_board(struct pci_dev *dev, int *flags){	struct isapnp_resources *res = (struct isapnp_resources *)dev->sysdata;	struct isapnp_resources *resa;	if (!(check_name(dev->name) || check_name(dev->bus->name)) &&	    !(check_compatible_id(dev)))		return -ENODEV;	if (!res || res->next)		return -ENODEV;	for (resa = res->alt; resa; resa = resa->alt) {		struct isapnp_port *port;		for (port = res->port; port; port = port->next)			if ((port->size == 8) &&			    ((port->min == 0x2f8) ||			     (port->min == 0x3f8) ||			     (port->min == 0x2e8) ||			     (port->min == 0x3e8)))				return 0;	}	return -ENODEV;}static intpnp_init_one(struct pci_dev *dev, const struct pnpbios_device_id *ent,	     char *slot_name){	struct serial_struct serial_req;	int ret, line, flags = ent ? ent->driver_data : 0;	if (!ent) {		ret = serial_pnp_guess_board(dev, &flags);		if (ret)			return ret;	}	if (dev->prepare(dev) < 0) {		printk("serial: PNP device '%s' prepare failed\n",			slot_name);		return -ENODEV;	}	if (dev->active)		return -ENODEV;	if (flags & SPCI_FL_NO_SHIRQ)		avoid_irq_share(dev);	if (dev->activate(dev) < 0) {		printk("serial: PNP device '%s' activate failed\n",			slot_name);		return -ENODEV;	}	memset(&serial_req, 0, sizeof(serial_req));	serial_req.irq = dev->irq_resource[0].start;	serial_req.port = pci_resource_start(dev, 0);	if (HIGH_BITS_OFFSET)		serial_req.port = pci_resource_start(dev, 0) >> HIGH_BITS_OFFSET;#ifdef SERIAL_DEBUG_PCI	printk("Setup PCI/PNP port: port %x, irq %d, type %d\n",	       serial_req.port, serial_req.irq, serial_req.io_type);#endif	serial_req.flags = ASYNC_SKIP_TEST | ASYNC_AUTOPROBE;	serial_req.baud_base = 115200;	line = register_serial(&serial_req);	if (line >= 0) {		pci_set_drvdata(dev, (void *)(line + 1));		/*		 * Public health warning: remove this once the 2.5		 * pnpbios_module_init() stuff is incorporated.		 */		dev->driver = (void *)pnp_dev_table;	} else		dev->deactivate(dev);	return line >= 0 ? 0 : -ENODEV;}static void pnp_remove_one(struct pci_dev *dev){	int line = (int)pci_get_drvdata(dev);	if (line) {		pci_set_drvdata(dev, NULL);		unregister_serial(line - 1);		dev->deactivate(dev);	}}static char hex[] = "0123456789ABCDEF";/* * This function should vanish when 2.5 comes around and * we have pnpbios_module_init() */static void pnp_init(void){	const struct pnpbios_device_id *id;	struct pci_dev *dev = NULL;#ifdef SERIAL_DEBUG_PNP	printk("Entered probe_serial_pnp()\n");#endif	isapnp_for_each_dev(dev) {		char slot_name[8];		u32 pnpid;		if (dev->active)			continue;		pnpid = dev->vendor << 16 | dev->device;		pnpid = cpu_to_le32(pnpid);#define HEX(id,a) hex[((id)>>a) & 15]#define CHAR(id,a) (0x40 + (((id)>>a) & 31))		slot_name[0] = CHAR(pnpid, 26);		slot_name[1] = CHAR(pnpid, 21);		slot_name[2] = CHAR(pnpid, 16);		slot_name[3] = HEX(pnpid, 12);		slot_name[4] = HEX(pnpid, 8);		slot_name[5] = HEX(pnpid, 4);		slot_name[6] = HEX(pnpid, 0);		slot_name[7] = '\0';				for (id = pnp_dev_table; id->id[0]; id++)			if (memcmp(id->id, slot_name, 7) == 0)				break;		if (id->id[0])			pnp_init_one(dev, id, slot_name);		else			pnp_init_one(dev, NULL, slot_name);	}#ifdef SERIAL_DEBUG_PNP	printk("Leaving probe_serial_pnp() (probe finished)\n");#endif}static int __init serial8250_pnp_init(void){	if (!isapnp_present()) {#ifdef SERIAL_DEBUG_PNP		printk("Leaving probe_serial_pnp() (no isapnp)\n");#endif		return -ENODEV;	}	pnp_init();	return 0;}static void __exit serial8250_pnp_exit(void){	struct pci_dev *dev = NULL;	isapnp_for_each_dev(dev) {		if (dev->driver != (void *)pnp_dev_table)			continue;		pnp_remove_one(dev);	}}module_init(serial8250_pnp_init);module_exit(serial8250_pnp_exit);EXPORT_NO_SYMBOLS;MODULE_LICENSE("GPL");MODULE_DESCRIPTION("Generic 8250/16x50 PNPBIOS serial probe module");MODULE_GENERIC_TABLE(pnp, pnp_dev_table);