255 lines
8.3 KiB
C
255 lines
8.3 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/config.h>
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#include <linux/module.h>
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#include <linux/init.h>
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#include <linux/version.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, PCI_ANY_ID, PCI_SUBDEVICE_ID_HYPERCOPE_METRO},
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{PCI_VENDOR_ID_HYPERCOPE, PCI_DEVICE_ID_HYPERCOPE_PLX, PCI_ANY_ID, PCI_SUBDEVICE_ID_HYPERCOPE_CHAMP2},
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{PCI_VENDOR_ID_HYPERCOPE, PCI_DEVICE_ID_HYPERCOPE_PLX, PCI_ANY_ID, PCI_SUBDEVICE_ID_HYPERCOPE_ERGO},
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{PCI_VENDOR_ID_HYPERCOPE, PCI_DEVICE_ID_HYPERCOPE_PLX, PCI_ANY_ID, PCI_SUBDEVICE_ID_HYPERCOPE_OLD_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 char *hysdn_init_revision = "$Revision: 1.6.6.6 $";
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int cardmax; /* number of found cards */
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hysdn_card *card_root = NULL; /* pointer to first card */
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/**********************************************/
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/* table assigning PCI-sub ids to board types */
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/* the last entry contains all 0 */
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/**********************************************/
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static struct {
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word subid; /* PCI sub id */
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uchar cardtyp; /* card type assigned */
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} pci_subid_map[] = {
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{
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PCI_SUBDEVICE_ID_HYPERCOPE_METRO, BD_METRO
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},
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{
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PCI_SUBDEVICE_ID_HYPERCOPE_CHAMP2, BD_CHAMP2
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},
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{
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PCI_SUBDEVICE_ID_HYPERCOPE_ERGO, BD_ERGO
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},
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{
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PCI_SUBDEVICE_ID_HYPERCOPE_OLD_ERGO, BD_ERGO
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},
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{
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0, 0
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} /* terminating entry */
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};
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/*********************************************************************/
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/* search_cards searches for available cards in the pci config data. */
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/* If a card is found, the card structure is allocated and the cards */
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/* ressources are reserved. cardmax is incremented. */
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/*********************************************************************/
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static void
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search_cards(void)
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{
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struct pci_dev *akt_pcidev = NULL;
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hysdn_card *card, *card_last;
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int i;
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card_root = NULL;
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card_last = NULL;
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while ((akt_pcidev = pci_find_device(PCI_VENDOR_ID_HYPERCOPE, PCI_DEVICE_ID_HYPERCOPE_PLX,
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akt_pcidev)) != NULL) {
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if (pci_enable_device(akt_pcidev))
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continue;
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if (!(card = kmalloc(sizeof(hysdn_card), GFP_KERNEL))) {
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printk(KERN_ERR "HYSDN: unable to alloc device mem \n");
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return;
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}
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memset(card, 0, sizeof(hysdn_card));
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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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for (i = 0; pci_subid_map[i].subid; i++)
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if (pci_subid_map[i].subid == card->subsysid) {
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card->brdtype = pci_subid_map[i].cardtyp;
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break;
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}
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if (card->brdtype != BD_NONE) {
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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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kfree(card);
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continue;
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}
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} else {
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printk(KERN_WARNING "HYSDN: unknown card id 0x%04x\n", card->subsysid);
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kfree(card); /* release mem */
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continue;
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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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} /* device found */
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} /* search_cards */
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/************************************************************************************/
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/* free_resources frees the acquired PCI resources and returns the allocated memory */
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/************************************************************************************/
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static void
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free_resources(void)
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{
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hysdn_card *card;
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while (card_root) {
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card = card_root;
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if (card->releasehardware)
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card->releasehardware(card); /* free all hardware resources */
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card_root = card_root->next; /* remove card from chain */
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kfree(card); /* return mem */
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} /* while card_root */
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} /* free_resources */
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/**************************************************************************/
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/* stop_cards disables (hardware resets) all cards and disables interrupt */
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/**************************************************************************/
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static void
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stop_cards(void)
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{
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hysdn_card *card;
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card = card_root; /* first in chain */
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while (card) {
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if (card->stopcard)
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card->stopcard(card);
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card = card->next; /* remove card from chain */
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} /* while card */
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} /* stop_cards */
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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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/* extract revision number from string for log output */
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/******************************************************/
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char *
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hysdn_getrev(const char *revision)
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{
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char *rev;
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char *p;
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if ((p = strchr(revision, ':'))) {
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rev = p + 2;
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p = strchr(rev, '$');
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*--p = 0;
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} else
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rev = "???";
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return rev;
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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 __init
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hysdn_init(void)
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{
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char tmp[50];
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strcpy(tmp, hysdn_init_revision);
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printk(KERN_NOTICE "HYSDN: module Rev: %s loaded\n", hysdn_getrev(tmp));
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strcpy(tmp, hysdn_net_revision);
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printk(KERN_NOTICE "HYSDN: network interface Rev: %s \n", hysdn_getrev(tmp));
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search_cards();
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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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free_resources(); /* proc file_sys not created */
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return (-1);
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}
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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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return(-1);
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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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#ifdef CONFIG_HYSDN_CAPI
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hysdn_card *card;
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#endif /* CONFIG_HYSDN_CAPI */
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stop_cards();
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#ifdef CONFIG_HYSDN_CAPI
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card = card_root; /* first in chain */
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while (card) {
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hycapi_capi_release(card);
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card = card->next; /* remove card from chain */
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} /* while card */
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hycapi_cleanup();
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#endif /* CONFIG_HYSDN_CAPI */
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hysdn_procconf_release();
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free_resources();
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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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