/* *  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/init.h>#include <asm/ecard.h>#include <asm/string.h>#ifndef NUM_SERIALS#define NUM_SERIALS	MY_NUMPORTS * MAX_ECARDS#endif#ifdef MODULEstatic int __serial_ports[NUM_SERIALS];static int __serial_pcount;static int __serial_addr[NUM_SERIALS];static struct expansion_card *expcard[MAX_ECARDS];#define ADD_ECARD(ec,card) expcard[(card)] = (ec)#define ADD_PORT(port,addr)					\	do {							\		__serial_ports[__serial_pcount] = (port);	\		__serial_addr[__serial_pcount] = (addr);	\		__serial_pcount += 1;				\	} while (0)#else#define ADD_ECARD(ec,card)#define ADD_PORT(port,addr)#endifstatic 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 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;	    ADD_PORT(line, address);	}	if (port) {	    ecard_claim (ec);	    ADD_ECARD(ec, card);	} else	    break;    } while (++card < MAX_ECARDS);    return card ? 0 : -ENODEV;}static void __exit EXIT (void){#ifdef MODULE    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]);#endif}EXPORT_NO_SYMBOLS;MODULE_LICENSE("GPL");module_init(INIT);module_exit(EXIT);