809 lines
21 KiB
C
809 lines
21 KiB
C
/* $Id: module.c,v 1.14.6.4 2001/09/23 22:24:32 kai Exp $
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*
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* ISDN lowlevel-module for the IBM ISDN-S0 Active 2000.
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*
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* Author Fritz Elfert
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* Copyright by Fritz Elfert <fritz@isdn4linux.de>
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*
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* This software may be used and distributed according to the terms
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* of the GNU General Public License, incorporated herein by reference.
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*
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* Thanks to Friedemann Baitinger and IBM Germany
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*
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*/
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#include "act2000.h"
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#include "act2000_isa.h"
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#include "capi.h"
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#include <linux/module.h>
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#include <linux/init.h>
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static unsigned short act2000_isa_ports[] =
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{
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0x0200, 0x0240, 0x0280, 0x02c0, 0x0300, 0x0340, 0x0380,
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0xcfe0, 0xcfa0, 0xcf60, 0xcf20, 0xcee0, 0xcea0, 0xce60,
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};
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#define ISA_NRPORTS (sizeof(act2000_isa_ports)/sizeof(unsigned short))
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static act2000_card *cards = (act2000_card *) NULL;
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/* Parameters to be set by insmod */
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static int act_bus = 0;
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static int act_port = -1; /* -1 = Autoprobe */
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static int act_irq = -1;
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static char *act_id = "\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0";
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MODULE_DESCRIPTION( "ISDN4Linux: Driver for IBM Active 2000 ISDN card");
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MODULE_AUTHOR( "Fritz Elfert");
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MODULE_LICENSE( "GPL");
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MODULE_PARM_DESC(act_bus, "BusType of first card, 1=ISA, 2=MCA, 3=PCMCIA, currently only ISA");
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MODULE_PARM_DESC(membase, "Base port address of first card");
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MODULE_PARM_DESC(act_irq, "IRQ of first card");
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MODULE_PARM_DESC(act_id, "ID-String of first card");
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module_param(act_bus, int, 0);
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module_param(act_port, int, 0);
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module_param(act_irq, int, 0);
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module_param(act_id, charp, 0);
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static int act2000_addcard(int, int, int, char *);
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static act2000_chan *
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find_channel(act2000_card *card, int channel)
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{
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if ((channel >= 0) && (channel < ACT2000_BCH))
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return &(card->bch[channel]);
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printk(KERN_WARNING "act2000: Invalid channel %d\n", channel);
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return NULL;
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}
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/*
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* Free MSN list
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*/
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static void
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act2000_clear_msn(act2000_card *card)
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{
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struct msn_entry *p = card->msn_list;
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struct msn_entry *q;
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unsigned long flags;
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spin_lock_irqsave(&card->lock, flags);
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card->msn_list = NULL;
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spin_unlock_irqrestore(&card->lock, flags);
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while (p) {
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q = p->next;
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kfree(p);
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p = q;
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}
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}
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/*
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* Find an MSN entry in the list.
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* If ia5 != 0, return IA5-encoded EAZ, else
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* return a bitmask with corresponding bit set.
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*/
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static __u16
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act2000_find_msn(act2000_card *card, char *msn, int ia5)
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{
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struct msn_entry *p = card->msn_list;
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__u8 eaz = '0';
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while (p) {
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if (!strcmp(p->msn, msn)) {
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eaz = p->eaz;
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break;
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}
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p = p->next;
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}
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if (!ia5)
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return (1 << (eaz - '0'));
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else
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return eaz;
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}
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/*
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* Find an EAZ entry in the list.
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* return a string with corresponding msn.
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*/
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char *
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act2000_find_eaz(act2000_card *card, char eaz)
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{
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struct msn_entry *p = card->msn_list;
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while (p) {
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if (p->eaz == eaz)
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return(p->msn);
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p = p->next;
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}
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return("\0");
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}
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/*
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* Add or delete an MSN to the MSN list
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*
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* First character of msneaz is EAZ, rest is MSN.
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* If length of eazmsn is 1, delete that entry.
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*/
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static int
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act2000_set_msn(act2000_card *card, char *eazmsn)
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{
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struct msn_entry *p = card->msn_list;
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struct msn_entry *q = NULL;
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unsigned long flags;
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int i;
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if (!strlen(eazmsn))
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return 0;
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if (strlen(eazmsn) > 16)
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return -EINVAL;
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for (i = 0; i < strlen(eazmsn); i++)
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if (!isdigit(eazmsn[i]))
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return -EINVAL;
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if (strlen(eazmsn) == 1) {
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/* Delete a single MSN */
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while (p) {
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if (p->eaz == eazmsn[0]) {
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spin_lock_irqsave(&card->lock, flags);
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if (q)
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q->next = p->next;
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else
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card->msn_list = p->next;
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spin_unlock_irqrestore(&card->lock, flags);
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kfree(p);
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printk(KERN_DEBUG
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"Mapping for EAZ %c deleted\n",
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eazmsn[0]);
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return 0;
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}
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q = p;
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p = p->next;
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}
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return 0;
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}
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/* Add a single MSN */
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while (p) {
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/* Found in list, replace MSN */
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if (p->eaz == eazmsn[0]) {
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spin_lock_irqsave(&card->lock, flags);
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strcpy(p->msn, &eazmsn[1]);
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spin_unlock_irqrestore(&card->lock, flags);
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printk(KERN_DEBUG
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"Mapping for EAZ %c changed to %s\n",
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eazmsn[0],
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&eazmsn[1]);
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return 0;
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}
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p = p->next;
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}
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/* Not found in list, add new entry */
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p = kmalloc(sizeof(msn_entry), GFP_KERNEL);
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if (!p)
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return -ENOMEM;
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p->eaz = eazmsn[0];
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strcpy(p->msn, &eazmsn[1]);
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p->next = card->msn_list;
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spin_lock_irqsave(&card->lock, flags);
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card->msn_list = p;
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spin_unlock_irqrestore(&card->lock, flags);
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printk(KERN_DEBUG
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"Mapping %c -> %s added\n",
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eazmsn[0],
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&eazmsn[1]);
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return 0;
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}
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static void
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act2000_transmit(struct act2000_card *card)
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{
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switch (card->bus) {
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case ACT2000_BUS_ISA:
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act2000_isa_send(card);
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break;
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case ACT2000_BUS_PCMCIA:
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case ACT2000_BUS_MCA:
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default:
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printk(KERN_WARNING
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"act2000_transmit: Illegal bustype %d\n", card->bus);
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}
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}
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static void
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act2000_receive(struct act2000_card *card)
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{
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switch (card->bus) {
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case ACT2000_BUS_ISA:
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act2000_isa_receive(card);
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break;
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case ACT2000_BUS_PCMCIA:
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case ACT2000_BUS_MCA:
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default:
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printk(KERN_WARNING
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"act2000_receive: Illegal bustype %d\n", card->bus);
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}
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}
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static void
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act2000_poll(unsigned long data)
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{
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act2000_card * card = (act2000_card *)data;
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unsigned long flags;
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act2000_receive(card);
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spin_lock_irqsave(&card->lock, flags);
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mod_timer(&card->ptimer, jiffies+3);
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spin_unlock_irqrestore(&card->lock, flags);
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}
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static int
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act2000_command(act2000_card * card, isdn_ctrl * c)
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{
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ulong a;
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act2000_chan *chan;
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act2000_cdef cdef;
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isdn_ctrl cmd;
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char tmp[17];
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int ret;
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unsigned long flags;
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void __user *arg;
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switch (c->command) {
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case ISDN_CMD_IOCTL:
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memcpy(&a, c->parm.num, sizeof(ulong));
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arg = (void __user *)a;
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switch (c->arg) {
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case ACT2000_IOCTL_LOADBOOT:
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switch (card->bus) {
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case ACT2000_BUS_ISA:
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ret = act2000_isa_download(card,
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arg);
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if (!ret) {
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card->flags |= ACT2000_FLAGS_LOADED;
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if (!(card->flags & ACT2000_FLAGS_IVALID)) {
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card->ptimer.expires = jiffies + 3;
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card->ptimer.function = act2000_poll;
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card->ptimer.data = (unsigned long)card;
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add_timer(&card->ptimer);
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}
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actcapi_manufacturer_req_errh(card);
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}
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break;
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default:
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printk(KERN_WARNING
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"act2000: Illegal BUS type %d\n",
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card->bus);
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ret = -EIO;
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}
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return ret;
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case ACT2000_IOCTL_SETPROTO:
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card->ptype = a?ISDN_PTYPE_EURO:ISDN_PTYPE_1TR6;
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if (!(card->flags & ACT2000_FLAGS_RUNNING))
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return 0;
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actcapi_manufacturer_req_net(card);
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return 0;
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case ACT2000_IOCTL_SETMSN:
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if (copy_from_user(tmp, arg,
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sizeof(tmp)))
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return -EFAULT;
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if ((ret = act2000_set_msn(card, tmp)))
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return ret;
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if (card->flags & ACT2000_FLAGS_RUNNING)
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return(actcapi_manufacturer_req_msn(card));
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return 0;
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case ACT2000_IOCTL_ADDCARD:
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if (copy_from_user(&cdef, arg,
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sizeof(cdef)))
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return -EFAULT;
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if (act2000_addcard(cdef.bus, cdef.port, cdef.irq, cdef.id))
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return -EIO;
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return 0;
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case ACT2000_IOCTL_TEST:
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if (!(card->flags & ACT2000_FLAGS_RUNNING))
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return -ENODEV;
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return 0;
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default:
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return -EINVAL;
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}
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break;
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case ISDN_CMD_DIAL:
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if (!card->flags & ACT2000_FLAGS_RUNNING)
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return -ENODEV;
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if (!(chan = find_channel(card, c->arg & 0x0f)))
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break;
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spin_lock_irqsave(&card->lock, flags);
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if (chan->fsm_state != ACT2000_STATE_NULL) {
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spin_unlock_irqrestore(&card->lock, flags);
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printk(KERN_WARNING "Dial on channel with state %d\n",
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chan->fsm_state);
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return -EBUSY;
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}
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if (card->ptype == ISDN_PTYPE_EURO)
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tmp[0] = act2000_find_msn(card, c->parm.setup.eazmsn, 1);
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else
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tmp[0] = c->parm.setup.eazmsn[0];
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chan->fsm_state = ACT2000_STATE_OCALL;
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chan->callref = 0xffff;
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spin_unlock_irqrestore(&card->lock, flags);
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ret = actcapi_connect_req(card, chan, c->parm.setup.phone,
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tmp[0], c->parm.setup.si1,
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c->parm.setup.si2);
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if (ret) {
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cmd.driver = card->myid;
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cmd.command = ISDN_STAT_DHUP;
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cmd.arg &= 0x0f;
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card->interface.statcallb(&cmd);
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}
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return ret;
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case ISDN_CMD_ACCEPTD:
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if (!card->flags & ACT2000_FLAGS_RUNNING)
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return -ENODEV;
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if (!(chan = find_channel(card, c->arg & 0x0f)))
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break;
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if (chan->fsm_state == ACT2000_STATE_ICALL)
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actcapi_select_b2_protocol_req(card, chan);
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return 0;
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case ISDN_CMD_ACCEPTB:
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if (!card->flags & ACT2000_FLAGS_RUNNING)
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return -ENODEV;
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return 0;
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case ISDN_CMD_HANGUP:
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if (!card->flags & ACT2000_FLAGS_RUNNING)
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return -ENODEV;
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if (!(chan = find_channel(card, c->arg & 0x0f)))
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break;
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switch (chan->fsm_state) {
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case ACT2000_STATE_ICALL:
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case ACT2000_STATE_BSETUP:
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actcapi_connect_resp(card, chan, 0x15);
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break;
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case ACT2000_STATE_ACTIVE:
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actcapi_disconnect_b3_req(card, chan);
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break;
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}
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return 0;
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case ISDN_CMD_SETEAZ:
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if (!card->flags & ACT2000_FLAGS_RUNNING)
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return -ENODEV;
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if (!(chan = find_channel(card, c->arg & 0x0f)))
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break;
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if (strlen(c->parm.num)) {
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if (card->ptype == ISDN_PTYPE_EURO) {
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chan->eazmask = act2000_find_msn(card, c->parm.num, 0);
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}
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if (card->ptype == ISDN_PTYPE_1TR6) {
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int i;
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chan->eazmask = 0;
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for (i = 0; i < strlen(c->parm.num); i++)
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if (isdigit(c->parm.num[i]))
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chan->eazmask |= (1 << (c->parm.num[i] - '0'));
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}
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} else
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chan->eazmask = 0x3ff;
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actcapi_listen_req(card);
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return 0;
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case ISDN_CMD_CLREAZ:
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if (!card->flags & ACT2000_FLAGS_RUNNING)
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return -ENODEV;
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if (!(chan = find_channel(card, c->arg & 0x0f)))
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break;
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chan->eazmask = 0;
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actcapi_listen_req(card);
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return 0;
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case ISDN_CMD_SETL2:
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if (!card->flags & ACT2000_FLAGS_RUNNING)
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return -ENODEV;
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if (!(chan = find_channel(card, c->arg & 0x0f)))
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break;
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chan->l2prot = (c->arg >> 8);
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return 0;
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case ISDN_CMD_SETL3:
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if (!card->flags & ACT2000_FLAGS_RUNNING)
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return -ENODEV;
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if ((c->arg >> 8) != ISDN_PROTO_L3_TRANS) {
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printk(KERN_WARNING "L3 protocol unknown\n");
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return -1;
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}
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if (!(chan = find_channel(card, c->arg & 0x0f)))
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break;
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chan->l3prot = (c->arg >> 8);
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return 0;
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}
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return -EINVAL;
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}
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static int
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act2000_sendbuf(act2000_card *card, int channel, int ack, struct sk_buff *skb)
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{
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struct sk_buff *xmit_skb;
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int len;
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act2000_chan *chan;
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actcapi_msg *msg;
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if (!(chan = find_channel(card, channel)))
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return -1;
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if (chan->fsm_state != ACT2000_STATE_ACTIVE)
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return -1;
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len = skb->len;
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if ((chan->queued + len) >= ACT2000_MAX_QUEUED)
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return 0;
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if (!len)
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return 0;
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if (skb_headroom(skb) < 19) {
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printk(KERN_WARNING "act2000_sendbuf: Headroom only %d\n",
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skb_headroom(skb));
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xmit_skb = alloc_skb(len + 19, GFP_ATOMIC);
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if (!xmit_skb) {
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printk(KERN_WARNING "act2000_sendbuf: Out of memory\n");
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return 0;
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}
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skb_reserve(xmit_skb, 19);
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memcpy(skb_put(xmit_skb, len), skb->data, len);
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} else {
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xmit_skb = skb_clone(skb, GFP_ATOMIC);
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if (!xmit_skb) {
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printk(KERN_WARNING "act2000_sendbuf: Out of memory\n");
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return 0;
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}
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}
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dev_kfree_skb(skb);
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msg = (actcapi_msg *)skb_push(xmit_skb, 19);
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msg->hdr.len = 19 + len;
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msg->hdr.applicationID = 1;
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msg->hdr.cmd.cmd = 0x86;
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msg->hdr.cmd.subcmd = 0x00;
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msg->hdr.msgnum = actcapi_nextsmsg(card);
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msg->msg.data_b3_req.datalen = len;
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msg->msg.data_b3_req.blocknr = (msg->hdr.msgnum & 0xff);
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msg->msg.data_b3_req.fakencci = MAKE_NCCI(chan->plci, 0, chan->ncci);
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msg->msg.data_b3_req.flags = ack; /* Will be set to 0 on actual sending */
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actcapi_debug_msg(xmit_skb, 1);
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chan->queued += len;
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skb_queue_tail(&card->sndq, xmit_skb);
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act2000_schedule_tx(card);
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return len;
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}
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/* Read the Status-replies from the Interface */
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static int
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act2000_readstatus(u_char __user * buf, int len, act2000_card * card)
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{
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int count;
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u_char __user *p;
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for (p = buf, count = 0; count < len; p++, count++) {
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if (card->status_buf_read == card->status_buf_write)
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return count;
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put_user(*card->status_buf_read++, p);
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if (card->status_buf_read > card->status_buf_end)
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card->status_buf_read = card->status_buf;
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}
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return count;
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}
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/*
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* Find card with given driverId
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*/
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static inline act2000_card *
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act2000_findcard(int driverid)
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{
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act2000_card *p = cards;
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while (p) {
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if (p->myid == driverid)
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return p;
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p = p->next;
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}
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return (act2000_card *) 0;
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}
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/*
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* Wrapper functions for interface to linklevel
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*/
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static int
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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 = (act2000_card *) kmalloc(sizeof(act2000_card), GFP_KERNEL))) {
|
|
printk(KERN_WARNING
|
|
"act2000: (%s) Could not allocate card-struct.\n", id);
|
|
return;
|
|
}
|
|
memset((char *) card, 0, sizeof(act2000_card));
|
|
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, (void *) (void *) act2000_transmit, card);
|
|
INIT_WORK(&card->rcv_tq, (void *) (void *) actcapi_dispatch, card);
|
|
INIT_WORK(&card->poll_tq, (void *) (void *) act2000_receive, card);
|
|
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 < ISA_NRPORTS; 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);
|