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