/* *  linux/drivers/acorn/char/serial-card.c * *  Copyright (C) 1996-1999 Russell King. * * This program is free software; you can redistribute it and/or modify * it under the terms of the GNU General Public License version 2 as * published by the Free Software Foundation. * * A generic handler of serial expansion cards that use 16550s or * the like. * * Definitions: *  MY_PRODS		Product numbers to identify this card by *  MY_MANUS		Manufacturer numbers to identify this card by *  MY_NUMPORTS		Number of ports per card *  MY_BAUD_BASE	Baud base for the card *  MY_INIT		Initialisation routine name *  MY_BASE_ADDRESS(ec)	Return base address for ports *  MY_PORT_ADDRESS *	(port,cardaddr)	Return address for port using base address *			from above. * * Changelog: *  30-07-1996	RMK	Created *  22-04-1998	RMK	Removed old register_pre_init_serial */#include <linux/module.h>#include <linux/types.h>#include <linux/serial.h>#include <linux/errno.h>#include <linux/ioport.h>#include <linux/init.h>#include <asm/ecard.h>#include <asm/string.h>#ifndef NUM_SERIALS#define NUM_SERIALS	MY_NUMPORTS * MAX_ECARDS#endifstatic int serial_ports[NUM_SERIALS];static int serial_pcount;static int serial_addr[NUM_SERIALS];static struct expansion_card *expcard[MAX_ECARDS];static const card_ids serial_cids[] = { MY_CARD_LIST, { 0xffff, 0xffff } };static inline int serial_register_onedev (unsigned long port, int irq){	struct serial_struct req;	memset(&req, 0, sizeof(req));	req.baud_base = MY_BAUD_BASE;	req.irq = irq;	req.port = port;	req.flags = 0;	return register_serial(&req);}static int __init serial_card_init(void){	int card = 0;	ecard_startfind ();	do {		struct expansion_card *ec;		unsigned long cardaddr;		int port;		ec = ecard_find (0, serial_cids);		if (!ec)			break;		cardaddr = MY_BASE_ADDRESS(ec);		for (port = 0; port < MY_NUMPORTS; port ++) {			unsigned long address;			int line;			address = MY_PORT_ADDRESS(port, cardaddr);			line = serial_register_onedev (address, ec->irq);			if (line < 0)				break;			serial_ports[serial_pcount] = line;			serial_addr[serial_pcount] = address;			serial_pcount += 1;		}		if (port) {			ecard_claim (ec);			expcard[card] = ec;		} else			break;	} while (++card < MAX_ECARDS);	return card ? 0 : -ENODEV;}static void __exit serial_card_exit(void){	int i;	for (i = 0; i < serial_pcount; i++) {		unregister_serial(serial_ports[i]);		release_region(serial_addr[i], 8);	}	for (i = 0; i < MAX_ECARDS; i++)		if (expcard[i])			ecard_release (expcard[i]);}EXPORT_NO_SYMBOLS;MODULE_AUTHOR("Russell King");MODULE_LICENSE("GPL");module_init(serial_card_init);module_exit(serial_card_exit);