- 根目录:
- drivers
- isdn
- hysdn
- hysdn_init.c
/* $Id: hysdn_init.c,v 1.6.6.6 2001/09/23 22:24:54 kai Exp $
*
* Linux driver for HYSDN cards, init functions.
*
* Author Werner Cornelius (werner@titro.de) for Hypercope GmbH
* Copyright 1999 by Werner Cornelius (werner@titro.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/init.h>
#include <linux/poll.h>
#include <linux/vmalloc.h>
#include <linux/slab.h>
#include <linux/pci.h>
#include "hysdn_defs.h"
static struct pci_device_id hysdn_pci_tbl[] = {
{ PCI_VENDOR_ID_HYPERCOPE, PCI_DEVICE_ID_HYPERCOPE_PLX,
PCI_ANY_ID, PCI_SUBDEVICE_ID_HYPERCOPE_METRO, 0, 0, BD_METRO },
{ PCI_VENDOR_ID_HYPERCOPE, PCI_DEVICE_ID_HYPERCOPE_PLX,
PCI_ANY_ID, PCI_SUBDEVICE_ID_HYPERCOPE_CHAMP2, 0, 0, BD_CHAMP2 },
{ PCI_VENDOR_ID_HYPERCOPE, PCI_DEVICE_ID_HYPERCOPE_PLX,
PCI_ANY_ID, PCI_SUBDEVICE_ID_HYPERCOPE_ERGO, 0, 0, BD_ERGO },
{ PCI_VENDOR_ID_HYPERCOPE, PCI_DEVICE_ID_HYPERCOPE_PLX,
PCI_ANY_ID, PCI_SUBDEVICE_ID_HYPERCOPE_OLD_ERGO, 0, 0, BD_ERGO },
{ } /* Terminating entry */
};
MODULE_DEVICE_TABLE(pci, hysdn_pci_tbl);
MODULE_DESCRIPTION("ISDN4Linux: Driver for HYSDN cards");
MODULE_AUTHOR("Werner Cornelius");
MODULE_LICENSE("GPL");
static int cardmax; /* number of found cards */
hysdn_card *card_root = NULL; /* pointer to first card */
static hysdn_card *card_last = NULL; /* pointer to first card */
/****************************************************************************/
/* The module startup and shutdown code. Only compiled when used as module. */
/* Using the driver as module is always advisable, because the booting */
/* image becomes smaller and the driver code is only loaded when needed. */
/* Additionally newer versions may be activated without rebooting. */
/****************************************************************************/
/****************************************************************************/
/* init_module is called once when the module is loaded to do all necessary */
/* things like autodetect... */
/* If the return value of this function is 0 the init has been successful */
/* and the module is added to the list in /proc/modules, otherwise an error */
/* is assumed and the module will not be kept in memory. */
/****************************************************************************/
static int __devinit hysdn_pci_init_one(struct pci_dev *akt_pcidev,
const struct pci_device_id *ent)
{
hysdn_card *card;
int rc;
rc = pci_enable_device(akt_pcidev);
if (rc)
return rc;
if (!(card = kzalloc(sizeof(hysdn_card), GFP_KERNEL))) {
printk(KERN_ERR "HYSDN: unable to alloc device mem \n");
rc = -ENOMEM;
goto err_out;
}
card->myid = cardmax; /* set own id */
card->bus = akt_pcidev->bus->number;
card->devfn = akt_pcidev->devfn; /* slot + function */
card->subsysid = akt_pcidev->subsystem_device;
card->irq = akt_pcidev->irq;
card->iobase = pci_resource_start(akt_pcidev, PCI_REG_PLX_IO_BASE);
card->plxbase = pci_resource_start(akt_pcidev, PCI_REG_PLX_MEM_BASE);
card->membase = pci_resource_start(akt_pcidev, PCI_REG_MEMORY_BASE);
card->brdtype = BD_NONE; /* unknown */
card->debug_flags = DEF_DEB_FLAGS; /* set default debug */
card->faxchans = 0; /* default no fax channels */
card->bchans = 2; /* and 2 b-channels */
card->brdtype = ent->driver_data;
if (ergo_inithardware(card)) {
printk(KERN_WARNING "HYSDN: card at io 0x%04x already in use\n", card->iobase);
rc = -EBUSY;
goto err_out_card;
}
cardmax++;
card->next = NULL; /*end of chain */
if (card_last)
card_last->next = card; /* pointer to next card */
else
card_root = card;
card_last = card; /* new chain end */
pci_set_drvdata(akt_pcidev, card);
return 0;
err_out_card:
kfree(card);
err_out:
pci_disable_device(akt_pcidev);
return rc;
}
static void __devexit hysdn_pci_remove_one(struct pci_dev *akt_pcidev)
{
hysdn_card *card = pci_get_drvdata(akt_pcidev);
pci_set_drvdata(akt_pcidev, NULL);
if (card->stopcard)
card->stopcard(card);
#ifdef CONFIG_HYSDN_CAPI
hycapi_capi_release(card);
#endif
if (card->releasehardware)
card->releasehardware(card); /* free all hardware resources */
if (card == card_root) {
card_root = card_root->next;
if (!card_root)
card_last = NULL;
} else {
hysdn_card *tmp = card_root;
while (tmp) {
if (tmp->next == card)
tmp->next = card->next;
card_last = tmp;
tmp = tmp->next;
}
}
kfree(card);
pci_disable_device(akt_pcidev);
}
static struct pci_driver hysdn_pci_driver = {
.name = "hysdn",
.id_table = hysdn_pci_tbl,
.probe = hysdn_pci_init_one,
.remove = __devexit_p(hysdn_pci_remove_one),
};
static int hysdn_have_procfs;
static int __init
hysdn_init(void)
{
int rc;
printk(KERN_NOTICE "HYSDN: module loaded\n");
rc = pci_register_driver(&hysdn_pci_driver);
if (rc)
return rc;
printk(KERN_INFO "HYSDN: %d card(s) found.\n", cardmax);
if (!hysdn_procconf_init())
hysdn_have_procfs = 1;
#ifdef CONFIG_HYSDN_CAPI
if(cardmax > 0) {
if(hycapi_init()) {
printk(KERN_ERR "HYCAPI: init failed\n");
if (hysdn_have_procfs)
hysdn_procconf_release();
pci_unregister_driver(&hysdn_pci_driver);
return -ESPIPE;
}
}
#endif /* CONFIG_HYSDN_CAPI */
return 0; /* no error */
} /* init_module */
/***********************************************************************/
/* cleanup_module is called when the module is released by the kernel. */
/* The routine is only called if init_module has been successful and */
/* the module counter has a value of 0. Otherwise this function will */
/* not be called. This function must release all resources still allo- */
/* cated as after the return from this function the module code will */
/* be removed from memory. */
/***********************************************************************/
static void __exit
hysdn_exit(void)
{
if (hysdn_have_procfs)
hysdn_procconf_release();
pci_unregister_driver(&hysdn_pci_driver);
#ifdef CONFIG_HYSDN_CAPI
hycapi_cleanup();
#endif /* CONFIG_HYSDN_CAPI */
printk(KERN_NOTICE "HYSDN: module unloaded\n");
} /* cleanup_module */
module_init(hysdn_init);
module_exit(hysdn_exit);