[linux-2.6-block.git] / drivers / isdn / act2000 / module.c

/* $Id: module.c,v 1.14.6.4 2001/09/23 22:24:32 kai Exp $
 *
 * ISDN lowlevel-module for the IBM ISDN-S0 Active 2000.
 *
 * Author       Fritz Elfert
 * Copyright    by Fritz Elfert      <fritz@isdn4linux.de>
 * 
 * This software may be used and distributed according to the terms
 * of the GNU General Public License, incorporated herein by reference.
 *
 * Thanks to Friedemann Baitinger and IBM Germany
 *
 */

#include "act2000.h"
#include "act2000_isa.h"
#include "capi.h"
#include <linux/module.h>
#include <linux/init.h>

static unsigned short act2000_isa_ports[] =
{
        0x0200, 0x0240, 0x0280, 0x02c0, 0x0300, 0x0340, 0x0380,
        0xcfe0, 0xcfa0, 0xcf60, 0xcf20, 0xcee0, 0xcea0, 0xce60,
};

static act2000_card *cards = (act2000_card *) NULL;

/* Parameters to be set by insmod */
static int   act_bus  =  0;
static int   act_port = -1;  /* -1 = Autoprobe  */
static int   act_irq  = -1;
static char *act_id   = "\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0";

MODULE_DESCRIPTION(       "ISDN4Linux: Driver for IBM Active 2000 ISDN card");
MODULE_AUTHOR(            "Fritz Elfert");
MODULE_LICENSE(           "GPL");
MODULE_PARM_DESC(act_bus, "BusType of first card, 1=ISA, 2=MCA, 3=PCMCIA, currently only ISA");
MODULE_PARM_DESC(membase, "Base port address of first card");
MODULE_PARM_DESC(act_irq, "IRQ of first card");
MODULE_PARM_DESC(act_id,  "ID-String of first card");
module_param(act_bus,  int, 0);
module_param(act_port, int, 0);
module_param(act_irq, int, 0);
module_param(act_id, charp, 0);

static int act2000_addcard(int, int, int, char *);

static act2000_chan *
find_channel(act2000_card *card, int channel)
{
	if ((channel >= 0) && (channel < ACT2000_BCH))
        	return &(card->bch[channel]);
	printk(KERN_WARNING "act2000: Invalid channel %d\n", channel);
	return NULL;
}

/*
 * Free MSN list
 */
static void
act2000_clear_msn(act2000_card *card)
{
	struct msn_entry *p = card->msn_list;
	struct msn_entry *q;
	unsigned long flags;

	spin_lock_irqsave(&card->lock, flags);
	card->msn_list = NULL;
	spin_unlock_irqrestore(&card->lock, flags);
	while (p) {
		q  = p->next;
		kfree(p);
		p = q;
	}
}

/*
 * Find an MSN entry in the list.
 * If ia5 != 0, return IA5-encoded EAZ, else
 * return a bitmask with corresponding bit set.
 */
static __u16
act2000_find_msn(act2000_card *card, char *msn, int ia5)
{
        struct msn_entry *p = card->msn_list;
	__u8 eaz = '0';

	while (p) {
		if (!strcmp(p->msn, msn)) {
			eaz = p->eaz;
			break;
		}
		p = p->next;
	}
	if (!ia5)
		return (1 << (eaz - '0'));
	else
		return eaz;
}

/*
 * Find an EAZ entry in the list.
 * return a string with corresponding msn.
 */
char *
act2000_find_eaz(act2000_card *card, char eaz)
{
        struct msn_entry *p = card->msn_list;

	while (p) {
		if (p->eaz == eaz)
			return(p->msn);
		p = p->next;
	}
	return("\0");
}

/*
 * Add or delete an MSN to the MSN list
 *
 * First character of msneaz is EAZ, rest is MSN.
 * If length of eazmsn is 1, delete that entry.
 */
static int
act2000_set_msn(act2000_card *card, char *eazmsn)
{
        struct msn_entry *p = card->msn_list;
        struct msn_entry *q = NULL;
	unsigned long flags;
	int i;
	
	if (!strlen(eazmsn))
		return 0;
	if (strlen(eazmsn) > 16)
		return -EINVAL;
	for (i = 0; i < strlen(eazmsn); i++)
		if (!isdigit(eazmsn[i]))
			return -EINVAL;
        if (strlen(eazmsn) == 1) {
		/* Delete a single MSN */
		while (p) {
			if (p->eaz == eazmsn[0]) {
				spin_lock_irqsave(&card->lock, flags);
				if (q)
					q->next = p->next;
				else
					card->msn_list = p->next;
				spin_unlock_irqrestore(&card->lock, flags);
				kfree(p);
				printk(KERN_DEBUG
				       "Mapping for EAZ %c deleted\n",
				       eazmsn[0]);
				return 0;
			}
			q = p;
			p = p->next;
		}
		return 0;
        }
	/* Add a single MSN */
	while (p) {
		/* Found in list, replace MSN */
		if (p->eaz == eazmsn[0]) {
			spin_lock_irqsave(&card->lock, flags);
			strcpy(p->msn, &eazmsn[1]);
			spin_unlock_irqrestore(&card->lock, flags);
			printk(KERN_DEBUG
			       "Mapping for EAZ %c changed to %s\n",
			       eazmsn[0],
			       &eazmsn[1]);
			return 0;
		}
		p = p->next;
	}
	/* Not found in list, add new entry */
	p = kmalloc(sizeof(msn_entry), GFP_KERNEL);
	if (!p)
		return -ENOMEM;
	p->eaz = eazmsn[0];
	strcpy(p->msn, &eazmsn[1]);
	p->next = card->msn_list;
	spin_lock_irqsave(&card->lock, flags);
	card->msn_list = p;
	spin_unlock_irqrestore(&card->lock, flags);
	printk(KERN_DEBUG
	       "Mapping %c -> %s added\n",
	       eazmsn[0],
	       &eazmsn[1]);
	return 0;
}

static void
act2000_transmit(struct work_struct *work)
{
	struct act2000_card *card =
		container_of(work, struct act2000_card, snd_tq);

	switch (card->bus) {
		case ACT2000_BUS_ISA:
			act2000_isa_send(card);
			break;
		case ACT2000_BUS_PCMCIA:
		case ACT2000_BUS_MCA:
		default:
			printk(KERN_WARNING
			       "act2000_transmit: Illegal bustype %d\n", card->bus);
	}
}

static void
act2000_receive(struct work_struct *work)
{
	struct act2000_card *card =
		container_of(work, struct act2000_card, poll_tq);

	switch (card->bus) {
		case ACT2000_BUS_ISA:
			act2000_isa_receive(card);
			break;
		case ACT2000_BUS_PCMCIA:
		case ACT2000_BUS_MCA:
		default:
			printk(KERN_WARNING
			       "act2000_receive: Illegal bustype %d\n", card->bus);
	}
}

static void
act2000_poll(unsigned long data)
{
	act2000_card * card = (act2000_card *)data;
	unsigned long flags;

	act2000_receive(&card->poll_tq);
	spin_lock_irqsave(&card->lock, flags);
	mod_timer(&card->ptimer, jiffies+3);
	spin_unlock_irqrestore(&card->lock, flags);
}

static int
act2000_command(act2000_card * card, isdn_ctrl * c)
{
        ulong a;
        act2000_chan *chan;
	act2000_cdef cdef;
	isdn_ctrl cmd;
	char tmp[17];
	int ret;
	unsigned long flags;
	void __user *arg;
 
        switch (c->command) {
		case ISDN_CMD_IOCTL:
			memcpy(&a, c->parm.num, sizeof(ulong));
			arg = (void __user *)a;
			switch (c->arg) {
				case ACT2000_IOCTL_LOADBOOT:
					switch (card->bus) {
						case ACT2000_BUS_ISA:
							ret = act2000_isa_download(card,
									   arg);
							if (!ret) {
								card->flags |= ACT2000_FLAGS_LOADED;
								if (!(card->flags & ACT2000_FLAGS_IVALID)) {
									card->ptimer.expires = jiffies + 3;
									card->ptimer.function = act2000_poll;
									card->ptimer.data = (unsigned long)card;
									add_timer(&card->ptimer);
								}
								actcapi_manufacturer_req_errh(card);
							}
							break;
						default:
							printk(KERN_WARNING
							       "act2000: Illegal BUS type %d\n",
							       card->bus);
							ret = -EIO;
					}
					return ret;
				case ACT2000_IOCTL_SETPROTO:
					card->ptype = a?ISDN_PTYPE_EURO:ISDN_PTYPE_1TR6;
					if (!(card->flags & ACT2000_FLAGS_RUNNING))
						return 0;
					actcapi_manufacturer_req_net(card);
					return 0;
				case ACT2000_IOCTL_SETMSN:
					if (copy_from_user(tmp, arg,
							   sizeof(tmp)))
						return -EFAULT;
					if ((ret = act2000_set_msn(card, tmp)))
						return ret;
					if (card->flags & ACT2000_FLAGS_RUNNING)
						return(actcapi_manufacturer_req_msn(card));
					return 0;
				case ACT2000_IOCTL_ADDCARD:
					if (copy_from_user(&cdef, arg,
							   sizeof(cdef)))
						return -EFAULT;
					if (act2000_addcard(cdef.bus, cdef.port, cdef.irq, cdef.id))
						return -EIO;
					return 0;
				case ACT2000_IOCTL_TEST:
					if (!(card->flags & ACT2000_FLAGS_RUNNING))
						return -ENODEV;
					return 0;
				default:
					return -EINVAL;
			}
			break;
		case ISDN_CMD_DIAL:
			if (!(card->flags & ACT2000_FLAGS_RUNNING))
				return -ENODEV;
			if (!(chan = find_channel(card, c->arg & 0x0f)))
				break;
			spin_lock_irqsave(&card->lock, flags);
			if (chan->fsm_state != ACT2000_STATE_NULL) {
				spin_unlock_irqrestore(&card->lock, flags);
				printk(KERN_WARNING "Dial on channel with state %d\n",
					chan->fsm_state);
				return -EBUSY;
			}
			if (card->ptype == ISDN_PTYPE_EURO)
				tmp[0] = act2000_find_msn(card, c->parm.setup.eazmsn, 1);
			else
				tmp[0] = c->parm.setup.eazmsn[0];
			chan->fsm_state = ACT2000_STATE_OCALL;
			chan->callref = 0xffff;
			spin_unlock_irqrestore(&card->lock, flags);
			ret = actcapi_connect_req(card, chan, c->parm.setup.phone,
						  tmp[0], c->parm.setup.si1,
						  c->parm.setup.si2);
			if (ret) {
				cmd.driver = card->myid;
				cmd.command = ISDN_STAT_DHUP;
				cmd.arg &= 0x0f;
				card->interface.statcallb(&cmd);
			}
			return ret;
		case ISDN_CMD_ACCEPTD:
			if (!(card->flags & ACT2000_FLAGS_RUNNING))
				return -ENODEV;
			if (!(chan = find_channel(card, c->arg & 0x0f)))
				break;
			if (chan->fsm_state == ACT2000_STATE_ICALL)
				actcapi_select_b2_protocol_req(card, chan);
			return 0;
		case ISDN_CMD_ACCEPTB:
			if (!(card->flags & ACT2000_FLAGS_RUNNING))
				return -ENODEV;
			return 0;
		case ISDN_CMD_HANGUP:
			if (!(card->flags & ACT2000_FLAGS_RUNNING))
				return -ENODEV;
			if (!(chan = find_channel(card, c->arg & 0x0f)))
				break;
			switch (chan->fsm_state) {
				case ACT2000_STATE_ICALL:
				case ACT2000_STATE_BSETUP:
					actcapi_connect_resp(card, chan, 0x15);
					break;
				case ACT2000_STATE_ACTIVE:
					actcapi_disconnect_b3_req(card, chan);
					break;
			}
			return 0;
		case ISDN_CMD_SETEAZ:
			if (!(card->flags & ACT2000_FLAGS_RUNNING))
				return -ENODEV;
			if (!(chan = find_channel(card, c->arg & 0x0f)))
				break;
			if (strlen(c->parm.num)) {
				if (card->ptype == ISDN_PTYPE_EURO) {
					chan->eazmask = act2000_find_msn(card, c->parm.num, 0);
				}
				if (card->ptype == ISDN_PTYPE_1TR6) {
					int i;
					chan->eazmask = 0;
					for (i = 0; i < strlen(c->parm.num); i++)
						if (isdigit(c->parm.num[i]))
							chan->eazmask |= (1 << (c->parm.num[i] - '0'));
				}
			} else
				chan->eazmask = 0x3ff;
			actcapi_listen_req(card);
			return 0;
		case ISDN_CMD_CLREAZ:
			if (!(card->flags & ACT2000_FLAGS_RUNNING))
				return -ENODEV;
			if (!(chan = find_channel(card, c->arg & 0x0f)))
				break;
			chan->eazmask = 0;
			actcapi_listen_req(card);
			return 0;
		case ISDN_CMD_SETL2:
			if (!(card->flags & ACT2000_FLAGS_RUNNING))
				return -ENODEV;
			if (!(chan = find_channel(card, c->arg & 0x0f)))
				break;
			chan->l2prot = (c->arg >> 8);
			return 0;
		case ISDN_CMD_SETL3:
			if (!(card->flags & ACT2000_FLAGS_RUNNING))
				return -ENODEV;
			if ((c->arg >> 8) != ISDN_PROTO_L3_TRANS) {
				printk(KERN_WARNING "L3 protocol unknown\n");
				return -1;
			}
			if (!(chan = find_channel(card, c->arg & 0x0f)))
				break;
			chan->l3prot = (c->arg >> 8);
			return 0;
        }
	
        return -EINVAL;
}

static int
act2000_sendbuf(act2000_card *card, int channel, int ack, struct sk_buff *skb)
{
        struct sk_buff *xmit_skb;
        int len;
        act2000_chan *chan;
	actcapi_msg *msg;

        if (!(chan = find_channel(card, channel)))
		return -1;
        if (chan->fsm_state != ACT2000_STATE_ACTIVE)
                return -1;
        len = skb->len;
        if ((chan->queued + len) >= ACT2000_MAX_QUEUED)
                return 0;
	if (!len)
		return 0;
	if (skb_headroom(skb) < 19) {
		printk(KERN_WARNING "act2000_sendbuf: Headroom only %d\n",
		       skb_headroom(skb));
		xmit_skb = alloc_skb(len + 19, GFP_ATOMIC);
		if (!xmit_skb) {
			printk(KERN_WARNING "act2000_sendbuf: Out of memory\n");
			return 0;
		}
		skb_reserve(xmit_skb, 19);
		skb_copy_from_linear_data(skb, skb_put(xmit_skb, len), len);
	} else {
		xmit_skb = skb_clone(skb, GFP_ATOMIC);
		if (!xmit_skb) {
			printk(KERN_WARNING "act2000_sendbuf: Out of memory\n");
			return 0;
		}
	}
	dev_kfree_skb(skb);
	msg = (actcapi_msg *)skb_push(xmit_skb, 19);
	msg->hdr.len = 19 + len;
	msg->hdr.applicationID = 1;
	msg->hdr.cmd.cmd = 0x86;
	msg->hdr.cmd.subcmd = 0x00;
	msg->hdr.msgnum = actcapi_nextsmsg(card);
	msg->msg.data_b3_req.datalen = len;
	msg->msg.data_b3_req.blocknr = (msg->hdr.msgnum & 0xff);
	msg->msg.data_b3_req.fakencci = MAKE_NCCI(chan->plci, 0, chan->ncci);
	msg->msg.data_b3_req.flags = ack; /* Will be set to 0 on actual sending */
	actcapi_debug_msg(xmit_skb, 1);
        chan->queued += len;
	skb_queue_tail(&card->sndq, xmit_skb);
	act2000_schedule_tx(card);
        return len;
}


/* Read the Status-replies from the Interface */
static int
act2000_readstatus(u_char __user * buf, int len, act2000_card * card)
{
        int count;
        u_char __user *p;

        for (p = buf, count = 0; count < len; p++, count++) {
                if (card->status_buf_read == card->status_buf_write)
                        return count;
		put_user(*card->status_buf_read++, p);
                if (card->status_buf_read > card->status_buf_end)
                        card->status_buf_read = card->status_buf;
        }
        return count;
}

/*
 * Find card with given driverId
 */
static inline act2000_card *
act2000_findcard(int driverid)
{
        act2000_card *p = cards;

        while (p) {
                if (p->myid == driverid)
                        return p;
                p = p->next;
        }
        return (act2000_card *) 0;
}

/*
 * Wrapper functions for interface to linklevel
 */
static int
if_command(isdn_ctrl * c)
{
        act2000_card *card = act2000_findcard(c->driver);

        if (card)
                return (act2000_command(card, c));
        printk(KERN_ERR
             "act2000: if_command %d called with invalid driverId %d!\n",
               c->command, c->driver);
        return -ENODEV;
}

static int
if_writecmd(const u_char __user *buf, int len, int id, int channel)
{
        act2000_card *card = act2000_findcard(id);

        if (card) {
                if (!(card->flags & ACT2000_FLAGS_RUNNING))
                        return -ENODEV;
                return (len);
        }
        printk(KERN_ERR
               "act2000: if_writecmd called with invalid driverId!\n");
        return -ENODEV;
}

static int
if_readstatus(u_char __user * buf, int len, int id, int channel)
{
        act2000_card *card = act2000_findcard(id);
	
        if (card) {
                if (!(card->flags & ACT2000_FLAGS_RUNNING))
                        return -ENODEV;
                return (act2000_readstatus(buf, len, card));
        }
        printk(KERN_ERR
               "act2000: if_readstatus called with invalid driverId!\n");
        return -ENODEV;
}

static int
if_sendbuf(int id, int channel, int ack, struct sk_buff *skb)
{
        act2000_card *card = act2000_findcard(id);
	
        if (card) {
                if (!(card->flags & ACT2000_FLAGS_RUNNING))
                        return -ENODEV;
		return (act2000_sendbuf(card, channel, ack, skb));
        }
        printk(KERN_ERR
               "act2000: if_sendbuf called with invalid driverId!\n");
        return -ENODEV;
}


/*
 * Allocate a new card-struct, initialize it
 * link it into cards-list.
 */
static void
act2000_alloccard(int bus, int port, int irq, char *id)
{
	int i;
        act2000_card *card;
        if (!(card = kzalloc(sizeof(act2000_card), GFP_KERNEL))) {
                printk(KERN_WARNING
		       "act2000: (%s) Could not allocate card-struct.\n", id);
                return;
        }
        spin_lock_init(&card->lock);
        spin_lock_init(&card->mnlock);
	skb_queue_head_init(&card->sndq);
	skb_queue_head_init(&card->rcvq);
	skb_queue_head_init(&card->ackq);
	INIT_WORK(&card->snd_tq, act2000_transmit);
	INIT_WORK(&card->rcv_tq, actcapi_dispatch);
	INIT_WORK(&card->poll_tq, act2000_receive);
	init_timer(&card->ptimer);
	card->interface.owner = THIS_MODULE;
        card->interface.channels = ACT2000_BCH;
        card->interface.maxbufsize = 4000;
        card->interface.command = if_command;
        card->interface.writebuf_skb = if_sendbuf;
        card->interface.writecmd = if_writecmd;
        card->interface.readstat = if_readstatus;
        card->interface.features =
		ISDN_FEATURE_L2_X75I |
		ISDN_FEATURE_L2_HDLC |
		ISDN_FEATURE_L3_TRANS |
		ISDN_FEATURE_P_UNKNOWN;
        card->interface.hl_hdrlen = 20;
        card->ptype = ISDN_PTYPE_EURO;
        strlcpy(card->interface.id, id, sizeof(card->interface.id));
        for (i=0; i<ACT2000_BCH; i++) {
                card->bch[i].plci = 0x8000;
                card->bch[i].ncci = 0x8000;
                card->bch[i].l2prot = ISDN_PROTO_L2_X75I;
                card->bch[i].l3prot = ISDN_PROTO_L3_TRANS;
        }
        card->myid = -1;
        card->bus = bus;
        card->port = port;
        card->irq = irq;
        card->next = cards;
        cards = card;
}

/*
 * register card at linklevel
 */
static int
act2000_registercard(act2000_card * card)
{
        switch (card->bus) {
		case ACT2000_BUS_ISA:
			break;
		case ACT2000_BUS_MCA:
		case ACT2000_BUS_PCMCIA:
		default:
			printk(KERN_WARNING
			       "act2000: Illegal BUS type %d\n",
			       card->bus);
			return -1;
        }
        if (!register_isdn(&card->interface)) {
                printk(KERN_WARNING
                       "act2000: Unable to register %s\n",
                       card->interface.id);
                return -1;
        }
        card->myid = card->interface.channels;
        sprintf(card->regname, "act2000-isdn (%s)", card->interface.id);
        return 0;
}

static void
unregister_card(act2000_card * card)
{
        isdn_ctrl cmd;

        cmd.command = ISDN_STAT_UNLOAD;
        cmd.driver = card->myid;
        card->interface.statcallb(&cmd);
        switch (card->bus) {
		case ACT2000_BUS_ISA:
			act2000_isa_release(card);
			break;
		case ACT2000_BUS_MCA:
		case ACT2000_BUS_PCMCIA:
		default:
			printk(KERN_WARNING
			       "act2000: Invalid BUS type %d\n",
			       card->bus);
			break;
        }
}

static int
act2000_addcard(int bus, int port, int irq, char *id)
{
	act2000_card *p;
	act2000_card *q = NULL;
	int initialized;
	int added = 0;
	int failed = 0;
	int i;

	if (!bus)
		bus = ACT2000_BUS_ISA;
	if (port != -1) {
		/* Port defined, do fixed setup */
		act2000_alloccard(bus, port, irq, id);
	} else {
		/* No port defined, perform autoprobing.
		 * This may result in more than one card detected.
		 */
		switch (bus) {
		case ACT2000_BUS_ISA:
			for (i = 0; i < ARRAY_SIZE(act2000_isa_ports); i++)
				if (act2000_isa_detect(act2000_isa_ports[i])) {
					printk(KERN_INFO "act2000: Detected "
						"ISA card at port 0x%x\n",
						act2000_isa_ports[i]);
					act2000_alloccard(bus,
						act2000_isa_ports[i], irq, id);
				}
			break;
		case ACT2000_BUS_MCA:
		case ACT2000_BUS_PCMCIA:
		default:
			printk(KERN_WARNING
				"act2000: addcard: Invalid BUS type %d\n", bus);
		}
	}
	if (!cards)
		return 1;
        p = cards;
        while (p) {
		initialized = 0;
		if (!p->interface.statcallb) {
			/* Not yet registered.
			 * Try to register and activate it.
			 */
			added++;
			switch (p->bus) {
				case ACT2000_BUS_ISA:
					if (act2000_isa_detect(p->port)) {
						if (act2000_registercard(p))
							break;
						if (act2000_isa_config_port(p, p->port)) {
							printk(KERN_WARNING
							       "act2000: Could not request port 0x%04x\n",
							       p->port);
							unregister_card(p);
							p->interface.statcallb = NULL;
							break;
						}
						if (act2000_isa_config_irq(p, p->irq)) {
							printk(KERN_INFO
							       "act2000: No IRQ available, fallback to polling\n");
							/* Fall back to polled operation */
							p->irq = 0;
						}
						printk(KERN_INFO
						       "act2000: ISA"
						       "-type card at port "
						       "0x%04x ",
						       p->port);
						if (p->irq)
							printk("irq %d\n", p->irq);
						else
							printk("polled\n");
						initialized = 1;
					}
					break;
				case ACT2000_BUS_MCA:
				case ACT2000_BUS_PCMCIA:
				default:
					printk(KERN_WARNING
					       "act2000: addcard: Invalid BUS type %d\n",
					       p->bus);
			}
		} else
			/* Card already initialized */
			initialized = 1;
                if (initialized) {
			/* Init OK, next card ... */
                        q = p;
                        p = p->next;
                } else {
                        /* Init failed, remove card from list, free memory */
                        printk(KERN_WARNING
                               "act2000: Initialization of %s failed\n",
                               p->interface.id);
                        if (q) {
                                q->next = p->next;
                                kfree(p);
                                p = q->next;
                        } else {
                                cards = p->next;
                                kfree(p);
                                p = cards;
                        }
			failed++;
                }
	}
        return (added - failed);
}

#define DRIVERNAME "IBM Active 2000 ISDN driver"

static int __init act2000_init(void)
{
        printk(KERN_INFO "%s\n", DRIVERNAME);
        if (!cards)
		act2000_addcard(act_bus, act_port, act_irq, act_id);
        if (!cards)
                printk(KERN_INFO "act2000: No cards defined yet\n");
        return 0;
}

static void __exit act2000_exit(void)
{
        act2000_card *card = cards;
        act2000_card *last;
        while (card) {
                unregister_card(card);
		del_timer(&card->ptimer);
                card = card->next;
        }
        card = cards;
        while (card) {
                last = card;
                card = card->next;
		act2000_clear_msn(last);
                kfree(last);
        }
        printk(KERN_INFO "%s unloaded\n", DRIVERNAME);
}

module_init(act2000_init);
module_exit(act2000_exit);
Commit	Line	Data
1da177e4 LT	1	/* $Id: module.c,v 1.14.6.4 2001/09/23 22:24:32 kai Exp $
	2	*
	3	* ISDN lowlevel-module for the IBM ISDN-S0 Active 2000.
	4	*
	5	* Author Fritz Elfert
	6	* Copyright by Fritz Elfert <fritz@isdn4linux.de>
	7	*
	8	* This software may be used and distributed according to the terms
	9	* of the GNU General Public License, incorporated herein by reference.
	10	*
	11	* Thanks to Friedemann Baitinger and IBM Germany
	12	*
	13	*/
	14
	15	#include "act2000.h"
	16	#include "act2000_isa.h"
	17	#include "capi.h"
	18	#include <linux/module.h>
	19	#include <linux/init.h>
	20
	21	static unsigned short act2000_isa_ports[] =
	22	{
	23	0x0200, 0x0240, 0x0280, 0x02c0, 0x0300, 0x0340, 0x0380,
	24	0xcfe0, 0xcfa0, 0xcf60, 0xcf20, 0xcee0, 0xcea0, 0xce60,
	25	};
1da177e4 LT	26
	27	static act2000_card cards = (act2000_card ) NULL;
	28
	29	/* Parameters to be set by insmod */
	30	static int act_bus = 0;
	31	static int act_port = -1; /* -1 = Autoprobe */
	32	static int act_irq = -1;
	33	static char *act_id = "\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0";
	34
	35	MODULE_DESCRIPTION( "ISDN4Linux: Driver for IBM Active 2000 ISDN card");
	36	MODULE_AUTHOR( "Fritz Elfert");
	37	MODULE_LICENSE( "GPL");
	38	MODULE_PARM_DESC(act_bus, "BusType of first card, 1=ISA, 2=MCA, 3=PCMCIA, currently only ISA");
	39	MODULE_PARM_DESC(membase, "Base port address of first card");
	40	MODULE_PARM_DESC(act_irq, "IRQ of first card");
	41	MODULE_PARM_DESC(act_id, "ID-String of first card");
	42	module_param(act_bus, int, 0);
	43	module_param(act_port, int, 0);
	44	module_param(act_irq, int, 0);
	45	module_param(act_id, charp, 0);
	46
	47	static int act2000_addcard(int, int, int, char *);
	48
	49	static act2000_chan *
	50	find_channel(act2000_card *card, int channel)
	51	{
	52	if ((channel >= 0) && (channel < ACT2000_BCH))
	53	return &(card->bch[channel]);
	54	printk(KERN_WARNING "act2000: Invalid channel %d\n", channel);
	55	return NULL;
	56	}
	57
	58	/*
	59	* Free MSN list
	60	*/
	61	static void
	62	act2000_clear_msn(act2000_card *card)
	63	{
	64	struct msn_entry *p = card->msn_list;
	65	struct msn_entry *q;
	66	unsigned long flags;
	67
	68	spin_lock_irqsave(&card->lock, flags);
	69	card->msn_list = NULL;
	70	spin_unlock_irqrestore(&card->lock, flags);
	71	while (p) {
	72	q = p->next;
	73	kfree(p);
	74	p = q;
	75	}
	76	}
	77
	78	/*
	79	* Find an MSN entry in the list.
	80	* If ia5 != 0, return IA5-encoded EAZ, else
	81	* return a bitmask with corresponding bit set.
	82	*/
	83	static __u16
	84	act2000_find_msn(act2000_card card, char msn, int ia5)
	85	{
	86	struct msn_entry *p = card->msn_list;
	87	__u8 eaz = '0';
	88
	89	while (p) {
90	if (!strcmp(p->msn, msn)) {
91	eaz = p->eaz;
92	break;
93	}
94	p = p->next;
95	}
96	if (!ia5)
97	return (1 << (eaz - '0'));
98	else
99	return eaz;
100	}
101
102	/*
103	* Find an EAZ entry in the list.
104	* return a string with corresponding msn.
105	*/
106	char *
107	act2000_find_eaz(act2000_card *card, char eaz)
108	{
109	struct msn_entry *p = card->msn_list;
110
111	while (p) {
112	if (p->eaz == eaz)
113	return(p->msn);
114	p = p->next;
115	}
116	return("\0");
117	}
118
119	/*
120	* Add or delete an MSN to the MSN list
121	*
122	* First character of msneaz is EAZ, rest is MSN.
123	* If length of eazmsn is 1, delete that entry.
124	*/
125	static int
126	act2000_set_msn(act2000_card card, char eazmsn)
127	{
128	struct msn_entry *p = card->msn_list;
129	struct msn_entry *q = NULL;
130	unsigned long flags;
131	int i;
132
133	if (!strlen(eazmsn))
134	return 0;
135	if (strlen(eazmsn) > 16)
136	return -EINVAL;
137	for (i = 0; i < strlen(eazmsn); i++)
138	if (!isdigit(eazmsn[i]))
139	return -EINVAL;
140	if (strlen(eazmsn) == 1) {
141	/* Delete a single MSN */
142	while (p) {
143	if (p->eaz == eazmsn[0]) {
144	spin_lock_irqsave(&card->lock, flags);
145	if (q)
146	q->next = p->next;
147	else
148	card->msn_list = p->next;
149	spin_unlock_irqrestore(&card->lock, flags);
150	kfree(p);
151	printk(KERN_DEBUG
152	"Mapping for EAZ %c deleted\n",
153	eazmsn[0]);
154	return 0;
155	}
156	q = p;
157	p = p->next;
158	}
159	return 0;
160	}
161	/* Add a single MSN */
162	while (p) {
163	/* Found in list, replace MSN */
164	if (p->eaz == eazmsn[0]) {
165	spin_lock_irqsave(&card->lock, flags);
166	strcpy(p->msn, &eazmsn[1]);
167	spin_unlock_irqrestore(&card->lock, flags);
168	printk(KERN_DEBUG
169	"Mapping for EAZ %c changed to %s\n",
170	eazmsn[0],
171	&eazmsn[1]);
172	return 0;
173	}
174	p = p->next;
175	}
176	/* Not found in list, add new entry */
177	p = kmalloc(sizeof(msn_entry), GFP_KERNEL);
178	if (!p)
179	return -ENOMEM;
180	p->eaz = eazmsn[0];
181	strcpy(p->msn, &eazmsn[1]);
182	p->next = card->msn_list;
183	spin_lock_irqsave(&card->lock, flags);
184	card->msn_list = p;
185	spin_unlock_irqrestore(&card->lock, flags);
186	printk(KERN_DEBUG
187	"Mapping %c -> %s added\n",
188	eazmsn[0],
189	&eazmsn[1]);
190	return 0;
191	}
192
193	static void
c4028958	194	act2000_transmit(struct work_struct *work)
1da177e4	195	{
c4028958 DH	196	struct act2000_card *card =
	197	container_of(work, struct act2000_card, snd_tq);
	198
1da177e4 LT	199	switch (card->bus) {
	200	case ACT2000_BUS_ISA:
	201	act2000_isa_send(card);
	202	break;
	203	case ACT2000_BUS_PCMCIA:
	204	case ACT2000_BUS_MCA:
	205	default:
	206	printk(KERN_WARNING
	207	"act2000_transmit: Illegal bustype %d\n", card->bus);
	208	}
	209	}
	210
	211	static void
c4028958	212	act2000_receive(struct work_struct *work)
1da177e4	213	{
c4028958 DH	214	struct act2000_card *card =
	215	container_of(work, struct act2000_card, poll_tq);
	216
1da177e4 LT	217	switch (card->bus) {
	218	case ACT2000_BUS_ISA:
	219	act2000_isa_receive(card);
	220	break;
	221	case ACT2000_BUS_PCMCIA:
	222	case ACT2000_BUS_MCA:
	223	default:
	224	printk(KERN_WARNING
	225	"act2000_receive: Illegal bustype %d\n", card->bus);
	226	}
	227	}
	228
	229	static void
	230	act2000_poll(unsigned long data)
	231	{
	232	act2000_card * card = (act2000_card *)data;
	233	unsigned long flags;
	234
c4028958	235	act2000_receive(&card->poll_tq);
1da177e4 LT	236	spin_lock_irqsave(&card->lock, flags);
	237	mod_timer(&card->ptimer, jiffies+3);
	238	spin_unlock_irqrestore(&card->lock, flags);
	239	}
	240
	241	static int
	242	act2000_command(act2000_card * card, isdn_ctrl * c)
	243	{
	244	ulong a;
	245	act2000_chan *chan;
	246	act2000_cdef cdef;
	247	isdn_ctrl cmd;
	248	char tmp[17];
	249	int ret;
	250	unsigned long flags;
	251	void __user *arg;
	252
	253	switch (c->command) {
	254	case ISDN_CMD_IOCTL:
	255	memcpy(&a, c->parm.num, sizeof(ulong));
	256	arg = (void __user *)a;
	257	switch (c->arg) {
	258	case ACT2000_IOCTL_LOADBOOT:
	259	switch (card->bus) {
	260	case ACT2000_BUS_ISA:
	261	ret = act2000_isa_download(card,
	262	arg);
	263	if (!ret) {
	264	card->flags \|= ACT2000_FLAGS_LOADED;
	265	if (!(card->flags & ACT2000_FLAGS_IVALID)) {
	266	card->ptimer.expires = jiffies + 3;
	267	card->ptimer.function = act2000_poll;
	268	card->ptimer.data = (unsigned long)card;
	269	add_timer(&card->ptimer);
	270	}
	271	actcapi_manufacturer_req_errh(card);
	272	}
	273	break;
	274	default:
	275	printk(KERN_WARNING
	276	"act2000: Illegal BUS type %d\n",
	277	card->bus);
	278	ret = -EIO;
	279	}
	280	return ret;
	281	case ACT2000_IOCTL_SETPROTO:
	282	card->ptype = a?ISDN_PTYPE_EURO:ISDN_PTYPE_1TR6;
	283	if (!(card->flags & ACT2000_FLAGS_RUNNING))
	284	return 0;
	285	actcapi_manufacturer_req_net(card);
	286	return 0;
	287	case ACT2000_IOCTL_SETMSN:
	288	if (copy_from_user(tmp, arg,
	289	sizeof(tmp)))
	290	return -EFAULT;
	291	if ((ret = act2000_set_msn(card, tmp)))
	292	return ret;
	293	if (card->flags & ACT2000_FLAGS_RUNNING)
	294	return(actcapi_manufacturer_req_msn(card));
	295	return 0;
	296	case ACT2000_IOCTL_ADDCARD:
	297	if (copy_from_user(&cdef, arg,
	298	sizeof(cdef)))
	299	return -EFAULT;
300	if (act2000_addcard(cdef.bus, cdef.port, cdef.irq, cdef.id))
301	return -EIO;
302	return 0;
303	case ACT2000_IOCTL_TEST:
304	if (!(card->flags & ACT2000_FLAGS_RUNNING))
305	return -ENODEV;
306	return 0;
307	default:
308	return -EINVAL;
309	}
310	break;
311	case ISDN_CMD_DIAL:
eaa0ff15	312	if (!(card->flags & ACT2000_FLAGS_RUNNING))
1da177e4 LT	313	return -ENODEV;
	314	if (!(chan = find_channel(card, c->arg & 0x0f)))
	315	break;
	316	spin_lock_irqsave(&card->lock, flags);
	317	if (chan->fsm_state != ACT2000_STATE_NULL) {
	318	spin_unlock_irqrestore(&card->lock, flags);
	319	printk(KERN_WARNING "Dial on channel with state %d\n",
	320	chan->fsm_state);
	321	return -EBUSY;
	322	}
	323	if (card->ptype == ISDN_PTYPE_EURO)
	324	tmp[0] = act2000_find_msn(card, c->parm.setup.eazmsn, 1);
	325	else
	326	tmp[0] = c->parm.setup.eazmsn[0];
	327	chan->fsm_state = ACT2000_STATE_OCALL;
	328	chan->callref = 0xffff;
	329	spin_unlock_irqrestore(&card->lock, flags);
	330	ret = actcapi_connect_req(card, chan, c->parm.setup.phone,
	331	tmp[0], c->parm.setup.si1,
	332	c->parm.setup.si2);
	333	if (ret) {
	334	cmd.driver = card->myid;
	335	cmd.command = ISDN_STAT_DHUP;
	336	cmd.arg &= 0x0f;
	337	card->interface.statcallb(&cmd);
	338	}
	339	return ret;
	340	case ISDN_CMD_ACCEPTD:
eaa0ff15	341	if (!(card->flags & ACT2000_FLAGS_RUNNING))
1da177e4 LT	342	return -ENODEV;
	343	if (!(chan = find_channel(card, c->arg & 0x0f)))
	344	break;
	345	if (chan->fsm_state == ACT2000_STATE_ICALL)
	346	actcapi_select_b2_protocol_req(card, chan);
	347	return 0;
	348	case ISDN_CMD_ACCEPTB:
eaa0ff15	349	if (!(card->flags & ACT2000_FLAGS_RUNNING))
1da177e4 LT	350	return -ENODEV;
	351	return 0;
	352	case ISDN_CMD_HANGUP:
eaa0ff15	353	if (!(card->flags & ACT2000_FLAGS_RUNNING))
1da177e4 LT	354	return -ENODEV;
	355	if (!(chan = find_channel(card, c->arg & 0x0f)))
	356	break;
	357	switch (chan->fsm_state) {
	358	case ACT2000_STATE_ICALL:
	359	case ACT2000_STATE_BSETUP:
	360	actcapi_connect_resp(card, chan, 0x15);
	361	break;
	362	case ACT2000_STATE_ACTIVE:
	363	actcapi_disconnect_b3_req(card, chan);
	364	break;
	365	}
	366	return 0;
	367	case ISDN_CMD_SETEAZ:
eaa0ff15	368	if (!(card->flags & ACT2000_FLAGS_RUNNING))
1da177e4 LT	369	return -ENODEV;
	370	if (!(chan = find_channel(card, c->arg & 0x0f)))
	371	break;
	372	if (strlen(c->parm.num)) {
	373	if (card->ptype == ISDN_PTYPE_EURO) {
	374	chan->eazmask = act2000_find_msn(card, c->parm.num, 0);
	375	}
	376	if (card->ptype == ISDN_PTYPE_1TR6) {
	377	int i;
	378	chan->eazmask = 0;
	379	for (i = 0; i < strlen(c->parm.num); i++)
	380	if (isdigit(c->parm.num[i]))
	381	chan->eazmask \|= (1 << (c->parm.num[i] - '0'));
	382	}
	383	} else
	384	chan->eazmask = 0x3ff;
	385	actcapi_listen_req(card);
	386	return 0;
	387	case ISDN_CMD_CLREAZ:
eaa0ff15	388	if (!(card->flags & ACT2000_FLAGS_RUNNING))
1da177e4 LT	389	return -ENODEV;
	390	if (!(chan = find_channel(card, c->arg & 0x0f)))
	391	break;
	392	chan->eazmask = 0;
	393	actcapi_listen_req(card);
	394	return 0;
	395	case ISDN_CMD_SETL2:
eaa0ff15	396	if (!(card->flags & ACT2000_FLAGS_RUNNING))
1da177e4 LT	397	return -ENODEV;
	398	if (!(chan = find_channel(card, c->arg & 0x0f)))
	399	break;
	400	chan->l2prot = (c->arg >> 8);
	401	return 0;
	402	case ISDN_CMD_SETL3:
eaa0ff15	403	if (!(card->flags & ACT2000_FLAGS_RUNNING))
1da177e4 LT	404	return -ENODEV;
	405	if ((c->arg >> 8) != ISDN_PROTO_L3_TRANS) {
	406	printk(KERN_WARNING "L3 protocol unknown\n");
	407	return -1;
	408	}
	409	if (!(chan = find_channel(card, c->arg & 0x0f)))
	410	break;
	411	chan->l3prot = (c->arg >> 8);
	412	return 0;
	413	}
	414
	415	return -EINVAL;
	416	}
	417
	418	static int
	419	act2000_sendbuf(act2000_card card, int channel, int ack, struct sk_buff skb)
	420	{
	421	struct sk_buff *xmit_skb;
	422	int len;
	423	act2000_chan *chan;
	424	actcapi_msg *msg;
	425
	426	if (!(chan = find_channel(card, channel)))
	427	return -1;
	428	if (chan->fsm_state != ACT2000_STATE_ACTIVE)
	429	return -1;
	430	len = skb->len;
	431	if ((chan->queued + len) >= ACT2000_MAX_QUEUED)
	432	return 0;
	433	if (!len)
	434	return 0;
	435	if (skb_headroom(skb) < 19) {
	436	printk(KERN_WARNING "act2000_sendbuf: Headroom only %d\n",
	437	skb_headroom(skb));
	438	xmit_skb = alloc_skb(len + 19, GFP_ATOMIC);
	439	if (!xmit_skb) {
	440	printk(KERN_WARNING "act2000_sendbuf: Out of memory\n");
	441	return 0;
	442	}
	443	skb_reserve(xmit_skb, 19);
d626f62b	444	skb_copy_from_linear_data(skb, skb_put(xmit_skb, len), len);
1da177e4 LT	445	} else {
	446	xmit_skb = skb_clone(skb, GFP_ATOMIC);
	447	if (!xmit_skb) {
	448	printk(KERN_WARNING "act2000_sendbuf: Out of memory\n");
	449	return 0;
	450	}
	451	}
	452	dev_kfree_skb(skb);
	453	msg = (actcapi_msg *)skb_push(xmit_skb, 19);
	454	msg->hdr.len = 19 + len;
	455	msg->hdr.applicationID = 1;
	456	msg->hdr.cmd.cmd = 0x86;
	457	msg->hdr.cmd.subcmd = 0x00;
	458	msg->hdr.msgnum = actcapi_nextsmsg(card);
	459	msg->msg.data_b3_req.datalen = len;
	460	msg->msg.data_b3_req.blocknr = (msg->hdr.msgnum & 0xff);
	461	msg->msg.data_b3_req.fakencci = MAKE_NCCI(chan->plci, 0, chan->ncci);
	462	msg->msg.data_b3_req.flags = ack; /* Will be set to 0 on actual sending */
	463	actcapi_debug_msg(xmit_skb, 1);
	464	chan->queued += len;
	465	skb_queue_tail(&card->sndq, xmit_skb);
	466	act2000_schedule_tx(card);
	467	return len;
	468	}
	469
	470
	471	/* Read the Status-replies from the Interface */
	472	static int
	473	act2000_readstatus(u_char __user * buf, int len, act2000_card * card)
	474	{
	475	int count;
	476	u_char __user *p;
	477
	478	for (p = buf, count = 0; count < len; p++, count++) {
	479	if (card->status_buf_read == card->status_buf_write)
	480	return count;
	481	put_user(*card->status_buf_read++, p);
	482	if (card->status_buf_read > card->status_buf_end)
	483	card->status_buf_read = card->status_buf;
	484	}
	485	return count;
	486	}
	487
	488	/*
	489	* Find card with given driverId
	490	*/
	491	static inline act2000_card *
	492	act2000_findcard(int driverid)
	493	{
	494	act2000_card *p = cards;
	495
	496	while (p) {
	497	if (p->myid == driverid)
	498	return p;
	499	p = p->next;
	500	}
	501	return (act2000_card *) 0;
	502	}
	503
	504	/*
	505	* Wrapper functions for interface to linklevel
	506	*/
	507	static int
	508	if_command(isdn_ctrl * c)
509	{
510	act2000_card *card = act2000_findcard(c->driver);
511
512	if (card)
513	return (act2000_command(card, c));
514	printk(KERN_ERR
515	"act2000: if_command %d called with invalid driverId %d!\n",
516	c->command, c->driver);
517	return -ENODEV;
518	}
519
520	static int
521	if_writecmd(const u_char __user *buf, int len, int id, int channel)
522	{
523	act2000_card *card = act2000_findcard(id);
524
525	if (card) {
eaa0ff15	526	if (!(card->flags & ACT2000_FLAGS_RUNNING))
1da177e4 LT	527	return -ENODEV;
	528	return (len);
	529	}
	530	printk(KERN_ERR
	531	"act2000: if_writecmd called with invalid driverId!\n");
	532	return -ENODEV;
	533	}
	534
	535	static int
	536	if_readstatus(u_char __user * buf, int len, int id, int channel)
	537	{
	538	act2000_card *card = act2000_findcard(id);
	539
	540	if (card) {
eaa0ff15	541	if (!(card->flags & ACT2000_FLAGS_RUNNING))
1da177e4 LT	542	return -ENODEV;
	543	return (act2000_readstatus(buf, len, card));
	544	}
	545	printk(KERN_ERR
	546	"act2000: if_readstatus called with invalid driverId!\n");
	547	return -ENODEV;
	548	}
	549
	550	static int
	551	if_sendbuf(int id, int channel, int ack, struct sk_buff *skb)
	552	{
	553	act2000_card *card = act2000_findcard(id);
	554
	555	if (card) {
eaa0ff15	556	if (!(card->flags & ACT2000_FLAGS_RUNNING))
1da177e4 LT	557	return -ENODEV;
	558	return (act2000_sendbuf(card, channel, ack, skb));
	559	}
	560	printk(KERN_ERR
	561	"act2000: if_sendbuf called with invalid driverId!\n");
	562	return -ENODEV;
	563	}
	564
	565
	566	/*
	567	* Allocate a new card-struct, initialize it
	568	* link it into cards-list.
	569	*/
	570	static void
	571	act2000_alloccard(int bus, int port, int irq, char *id)
	572	{
	573	int i;
	574	act2000_card *card;
41f96935	575	if (!(card = kzalloc(sizeof(act2000_card), GFP_KERNEL))) {
1da177e4 LT	576	printk(KERN_WARNING
	577	"act2000: (%s) Could not allocate card-struct.\n", id);
	578	return;
	579	}
1da177e4 LT	580	spin_lock_init(&card->lock);
	581	spin_lock_init(&card->mnlock);
	582	skb_queue_head_init(&card->sndq);
	583	skb_queue_head_init(&card->rcvq);
	584	skb_queue_head_init(&card->ackq);
c4028958 DH	585	INIT_WORK(&card->snd_tq, act2000_transmit);
	586	INIT_WORK(&card->rcv_tq, actcapi_dispatch);
	587	INIT_WORK(&card->poll_tq, act2000_receive);
1da177e4 LT	588	init_timer(&card->ptimer);
	589	card->interface.owner = THIS_MODULE;
	590	card->interface.channels = ACT2000_BCH;
	591	card->interface.maxbufsize = 4000;
	592	card->interface.command = if_command;
	593	card->interface.writebuf_skb = if_sendbuf;
	594	card->interface.writecmd = if_writecmd;
	595	card->interface.readstat = if_readstatus;
	596	card->interface.features =
	597	ISDN_FEATURE_L2_X75I \|
	598	ISDN_FEATURE_L2_HDLC \|
	599	ISDN_FEATURE_L3_TRANS \|
	600	ISDN_FEATURE_P_UNKNOWN;
	601	card->interface.hl_hdrlen = 20;
	602	card->ptype = ISDN_PTYPE_EURO;
	603	strlcpy(card->interface.id, id, sizeof(card->interface.id));
	604	for (i=0; i<ACT2000_BCH; i++) {
	605	card->bch[i].plci = 0x8000;
	606	card->bch[i].ncci = 0x8000;
	607	card->bch[i].l2prot = ISDN_PROTO_L2_X75I;
	608	card->bch[i].l3prot = ISDN_PROTO_L3_TRANS;
	609	}
	610	card->myid = -1;
	611	card->bus = bus;
	612	card->port = port;
	613	card->irq = irq;
	614	card->next = cards;
	615	cards = card;
	616	}
	617
	618	/*
	619	* register card at linklevel
	620	*/
	621	static int
	622	act2000_registercard(act2000_card * card)
	623	{
	624	switch (card->bus) {
	625	case ACT2000_BUS_ISA:
	626	break;
	627	case ACT2000_BUS_MCA:
	628	case ACT2000_BUS_PCMCIA:
	629	default:
	630	printk(KERN_WARNING
	631	"act2000: Illegal BUS type %d\n",
	632	card->bus);
	633	return -1;
	634	}
	635	if (!register_isdn(&card->interface)) {
	636	printk(KERN_WARNING
	637	"act2000: Unable to register %s\n",
	638	card->interface.id);
	639	return -1;
	640	}
	641	card->myid = card->interface.channels;
	642	sprintf(card->regname, "act2000-isdn (%s)", card->interface.id);
	643	return 0;
	644	}
	645
	646	static void
	647	unregister_card(act2000_card * card)
	648	{
	649	isdn_ctrl cmd;
	650
	651	cmd.command = ISDN_STAT_UNLOAD;
652	cmd.driver = card->myid;
653	card->interface.statcallb(&cmd);
654	switch (card->bus) {
655	case ACT2000_BUS_ISA:
656	act2000_isa_release(card);
657	break;
658	case ACT2000_BUS_MCA:
659	case ACT2000_BUS_PCMCIA:
660	default:
661	printk(KERN_WARNING
662	"act2000: Invalid BUS type %d\n",
663	card->bus);
664	break;
665	}
666	}
667
668	static int
669	act2000_addcard(int bus, int port, int irq, char *id)
670	{
671	act2000_card *p;
672	act2000_card *q = NULL;
673	int initialized;
674	int added = 0;
675	int failed = 0;
676	int i;
677
678	if (!bus)
679	bus = ACT2000_BUS_ISA;
680	if (port != -1) {
681	/* Port defined, do fixed setup */
682	act2000_alloccard(bus, port, irq, id);
683	} else {
684	/* No port defined, perform autoprobing.
685	* This may result in more than one card detected.
686	*/
687	switch (bus) {
ba2d6ccb KK	688	case ACT2000_BUS_ISA:
	689	for (i = 0; i < ARRAY_SIZE(act2000_isa_ports); i++)
	690	if (act2000_isa_detect(act2000_isa_ports[i])) {
	691	printk(KERN_INFO "act2000: Detected "
	692	"ISA card at port 0x%x\n",
	693	act2000_isa_ports[i]);
	694	act2000_alloccard(bus,
	695	act2000_isa_ports[i], irq, id);
	696	}
	697	break;
	698	case ACT2000_BUS_MCA:
	699	case ACT2000_BUS_PCMCIA:
	700	default:
	701	printk(KERN_WARNING
	702	"act2000: addcard: Invalid BUS type %d\n", bus);
1da177e4 LT	703	}
	704	}
	705	if (!cards)
	706	return 1;
	707	p = cards;
	708	while (p) {
	709	initialized = 0;
	710	if (!p->interface.statcallb) {
	711	/* Not yet registered.
	712	* Try to register and activate it.
	713	*/
	714	added++;
	715	switch (p->bus) {
	716	case ACT2000_BUS_ISA:
	717	if (act2000_isa_detect(p->port)) {
	718	if (act2000_registercard(p))
	719	break;
	720	if (act2000_isa_config_port(p, p->port)) {
	721	printk(KERN_WARNING
	722	"act2000: Could not request port 0x%04x\n",
	723	p->port);
	724	unregister_card(p);
	725	p->interface.statcallb = NULL;
	726	break;
	727	}
	728	if (act2000_isa_config_irq(p, p->irq)) {
	729	printk(KERN_INFO
	730	"act2000: No IRQ available, fallback to polling\n");
	731	/* Fall back to polled operation */
	732	p->irq = 0;
	733	}
	734	printk(KERN_INFO
	735	"act2000: ISA"
	736	"-type card at port "
	737	"0x%04x ",
	738	p->port);
	739	if (p->irq)
	740	printk("irq %d\n", p->irq);
	741	else
	742	printk("polled\n");
	743	initialized = 1;
	744	}
	745	break;
	746	case ACT2000_BUS_MCA:
	747	case ACT2000_BUS_PCMCIA:
	748	default:
	749	printk(KERN_WARNING
	750	"act2000: addcard: Invalid BUS type %d\n",
	751	p->bus);
	752	}
	753	} else
	754	/* Card already initialized */
	755	initialized = 1;
	756	if (initialized) {
	757	/* Init OK, next card ... */
	758	q = p;
	759	p = p->next;
	760	} else {
	761	/* Init failed, remove card from list, free memory */
	762	printk(KERN_WARNING
	763	"act2000: Initialization of %s failed\n",
	764	p->interface.id);
	765	if (q) {
	766	q->next = p->next;
767	kfree(p);
768	p = q->next;
769	} else {
770	cards = p->next;
771	kfree(p);
772	p = cards;
773	}
774	failed++;
775	}
776	}
777	return (added - failed);
778	}
779
780	#define DRIVERNAME "IBM Active 2000 ISDN driver"
781
782	static int __init act2000_init(void)
783	{
784	printk(KERN_INFO "%s\n", DRIVERNAME);
785	if (!cards)
786	act2000_addcard(act_bus, act_port, act_irq, act_id);
787	if (!cards)
788	printk(KERN_INFO "act2000: No cards defined yet\n");
789	return 0;
790	}
791
792	static void __exit act2000_exit(void)
793	{
794	act2000_card *card = cards;
795	act2000_card *last;
796	while (card) {
797	unregister_card(card);
798	del_timer(&card->ptimer);
799	card = card->next;
800	}
801	card = cards;
802	while (card) {
803	last = card;
804	card = card->next;
805	act2000_clear_msn(last);
806	kfree(last);
807	}
808	printk(KERN_INFO "%s unloaded\n", DRIVERNAME);
809	}
810
811	module_init(act2000_init);
812	module_exit(act2000_exit);