blob: 42b115da33e91b39aa04972f79debc0c605db2e8 [file] [log] [blame]
/* $Id: b1isa.c,v 1.1.4.1 2001/11/20 14:19:34 kai Exp $
*
* Module for AVM B1 ISA-card.
*
* Copyright 1999 by Carsten Paeth <calle@calle.de>
*
* This software may be used and distributed according to the terms
* of the GNU General Public License, incorporated herein by reference.
*
*/
#include <linux/module.h>
#include <linux/kernel.h>
#include <linux/skbuff.h>
#include <linux/delay.h>
#include <linux/mm.h>
#include <linux/interrupt.h>
#include <linux/ioport.h>
#include <linux/capi.h>
#include <linux/init.h>
#include <asm/io.h>
#include "capicmd.h"
#include "capiutil.h"
#include "capilli.h"
#include "avmcard.h"
static char *revision = "$Revision: 1.1.4.1 $";
/* ------------------------------------------------------------- */
MODULE_DESCRIPTION("CAPI4Linux: Driver for AVM B1 ISA card");
MODULE_AUTHOR("Carsten Paeth");
MODULE_LICENSE("GPL");
/* ------------------------------------------------------------- */
static void b1isa_interrupt(int interrupt, void *devptr, struct pt_regs *regs)
{
avmcard *card;
card = (avmcard *) devptr;
if (!card) {
printk(KERN_WARNING "b1_interrupt: wrong device\n");
return;
}
if (card->interrupt) {
printk(KERN_ERR "b1_interrupt: reentering interrupt hander (%s)\n", card->name);
return;
}
card->interrupt = 1;
b1_handle_interrupt(card);
card->interrupt = 0;
}
/* ------------------------------------------------------------- */
static struct capi_driver_interface *di;
/* ------------------------------------------------------------- */
static void b1isa_remove_ctr(struct capi_ctr *ctrl)
{
avmctrl_info *cinfo = (avmctrl_info *)(ctrl->driverdata);
avmcard *card = cinfo->card;
unsigned int port = card->port;
b1_reset(port);
b1_reset(port);
di->detach_ctr(ctrl);
free_irq(card->irq, card);
release_region(card->port, AVMB1_PORTLEN);
kfree(card->ctrlinfo);
kfree(card);
MOD_DEC_USE_COUNT;
}
/* ------------------------------------------------------------- */
static int b1isa_add_card(struct capi_driver *driver, struct capicardparams *p)
{
avmctrl_info *cinfo;
avmcard *card;
int retval;
MOD_INC_USE_COUNT;
card = (avmcard *) kmalloc(sizeof(avmcard), GFP_ATOMIC);
if (!card) {
printk(KERN_WARNING "b1isa: no memory.\n");
MOD_DEC_USE_COUNT;
return -ENOMEM;
}
memset(card, 0, sizeof(avmcard));
cinfo = (avmctrl_info *) kmalloc(sizeof(avmctrl_info), GFP_ATOMIC);
if (!cinfo) {
printk(KERN_WARNING "b1isa: no memory.\n");
kfree(card);
MOD_DEC_USE_COUNT;
return -ENOMEM;
}
memset(cinfo, 0, sizeof(avmctrl_info));
card->ctrlinfo = cinfo;
cinfo->card = card;
sprintf(card->name, "b1isa-%x", p->port);
card->port = p->port;
card->irq = p->irq;
card->cardtype = avm_b1isa;
if (check_region(card->port, AVMB1_PORTLEN)) {
printk(KERN_WARNING
"b1isa: ports 0x%03x-0x%03x in use.\n",
card->port, card->port + AVMB1_PORTLEN);
kfree(card->ctrlinfo);
kfree(card);
MOD_DEC_USE_COUNT;
return -EBUSY;
}
if (b1_irq_table[card->irq & 0xf] == 0) {
printk(KERN_WARNING "b1isa: irq %d not valid.\n", card->irq);
kfree(card->ctrlinfo);
kfree(card);
MOD_DEC_USE_COUNT;
return -EINVAL;
}
if ( card->port != 0x150 && card->port != 0x250
&& card->port != 0x300 && card->port != 0x340) {
printk(KERN_WARNING "b1isa: illegal port 0x%x.\n", card->port);
kfree(card->ctrlinfo);
kfree(card);
MOD_DEC_USE_COUNT;
return -EINVAL;
}
b1_reset(card->port);
if ((retval = b1_detect(card->port, card->cardtype)) != 0) {
printk(KERN_NOTICE "b1isa: NO card at 0x%x (%d)\n",
card->port, retval);
kfree(card->ctrlinfo);
kfree(card);
MOD_DEC_USE_COUNT;
return -EIO;
}
b1_reset(card->port);
b1_getrevision(card);
request_region(p->port, AVMB1_PORTLEN, card->name);
retval = request_irq(card->irq, b1isa_interrupt, 0, card->name, card);
if (retval) {
printk(KERN_ERR "b1isa: unable to get IRQ %d.\n", card->irq);
release_region(card->port, AVMB1_PORTLEN);
kfree(card->ctrlinfo);
kfree(card);
MOD_DEC_USE_COUNT;
return -EBUSY;
}
cinfo->capi_ctrl = di->attach_ctr(driver, card->name, cinfo);
if (!cinfo->capi_ctrl) {
printk(KERN_ERR "b1isa: attach controller failed.\n");
free_irq(card->irq, card);
release_region(card->port, AVMB1_PORTLEN);
kfree(card->ctrlinfo);
kfree(card);
MOD_DEC_USE_COUNT;
return -EBUSY;
}
printk(KERN_INFO
"%s: AVM B1 ISA at i/o %#x, irq %d, revision %d\n",
driver->name, card->port, card->irq, card->revision);
return 0;
}
static char *b1isa_procinfo(struct capi_ctr *ctrl)
{
avmctrl_info *cinfo = (avmctrl_info *)(ctrl->driverdata);
if (!cinfo)
return "";
sprintf(cinfo->infobuf, "%s %s 0x%x %d r%d",
cinfo->cardname[0] ? cinfo->cardname : "-",
cinfo->version[VER_DRIVER] ? cinfo->version[VER_DRIVER] : "-",
cinfo->card ? cinfo->card->port : 0x0,
cinfo->card ? cinfo->card->irq : 0,
cinfo->card ? cinfo->card->revision : 0
);
return cinfo->infobuf;
}
/* ------------------------------------------------------------- */
static struct capi_driver b1isa_driver = {
name: "b1isa",
revision: "0.0",
load_firmware: b1_load_firmware,
reset_ctr: b1_reset_ctr,
remove_ctr: b1isa_remove_ctr,
register_appl: b1_register_appl,
release_appl: b1_release_appl,
send_message: b1_send_message,
procinfo: b1isa_procinfo,
ctr_read_proc: b1ctl_read_proc,
driver_read_proc: 0, /* use standard driver_read_proc */
add_card: b1isa_add_card,
};
static int __init b1isa_init(void)
{
struct capi_driver *driver = &b1isa_driver;
char *p;
int retval = 0;
MOD_INC_USE_COUNT;
if ((p = strchr(revision, ':')) != 0 && p[1]) {
strncpy(driver->revision, p + 2, sizeof(driver->revision));
driver->revision[sizeof(driver->revision)-1] = 0;
if ((p = strchr(driver->revision, '$')) != 0 && p > driver->revision)
*(p-1) = 0;
}
printk(KERN_INFO "%s: revision %s\n", driver->name, driver->revision);
di = attach_capi_driver(driver);
if (!di) {
printk(KERN_ERR "%s: failed to attach capi_driver\n",
driver->name);
retval = -EIO;
}
MOD_DEC_USE_COUNT;
return retval;
}
static void __exit b1isa_exit(void)
{
detach_capi_driver(&b1isa_driver);
}
module_init(b1isa_init);
module_exit(b1isa_exit);