hysdn_init.c
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- /* $Id: hysdn_init.c,v 1.1.4.1 2001/11/20 14:19:37 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/config.h>
- #include <linux/module.h>
- #include <linux/init.h>
- #include <linux/version.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[] __initdata = {
- {PCI_VENDOR_ID_HYPERCOPE, PCI_DEVICE_ID_HYPERCOPE_PLX, PCI_ANY_ID, PCI_SUBDEVICE_ID_HYPERCOPE_METRO},
- {PCI_VENDOR_ID_HYPERCOPE, PCI_DEVICE_ID_HYPERCOPE_PLX, PCI_ANY_ID, PCI_SUBDEVICE_ID_HYPERCOPE_CHAMP2},
- {PCI_VENDOR_ID_HYPERCOPE, PCI_DEVICE_ID_HYPERCOPE_PLX, PCI_ANY_ID, PCI_SUBDEVICE_ID_HYPERCOPE_ERGO},
- {PCI_VENDOR_ID_HYPERCOPE, PCI_DEVICE_ID_HYPERCOPE_PLX, PCI_ANY_ID, PCI_SUBDEVICE_ID_HYPERCOPE_OLD_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 char *hysdn_init_revision = "$Revision: 1.1.4.1 $";
- int cardmax; /* number of found cards */
- hysdn_card *card_root = NULL; /* pointer to first card */
- /**********************************************/
- /* table assigning PCI-sub ids to board types */
- /* the last entry contains all 0 */
- /**********************************************/
- static struct {
- word subid; /* PCI sub id */
- uchar cardtyp; /* card type assigned */
- } pci_subid_map[] = {
- {
- PCI_SUBDEVICE_ID_HYPERCOPE_METRO, BD_METRO
- },
- {
- PCI_SUBDEVICE_ID_HYPERCOPE_CHAMP2, BD_CHAMP2
- },
- {
- PCI_SUBDEVICE_ID_HYPERCOPE_ERGO, BD_ERGO
- },
- {
- PCI_SUBDEVICE_ID_HYPERCOPE_OLD_ERGO, BD_ERGO
- },
- {
- 0, 0
- } /* terminating entry */
- };
- /*********************************************************************/
- /* search_cards searches for available cards in the pci config data. */
- /* If a card is found, the card structure is allocated and the cards */
- /* ressources are reserved. cardmax is incremented. */
- /*********************************************************************/
- static void
- search_cards(void)
- {
- struct pci_dev *akt_pcidev = NULL;
- hysdn_card *card, *card_last;
- int i;
- card_root = NULL;
- card_last = NULL;
- while ((akt_pcidev = pci_find_device(PCI_VENDOR_ID_HYPERCOPE, PCI_DEVICE_ID_HYPERCOPE_PLX,
- akt_pcidev)) != NULL) {
- if (pci_enable_device(akt_pcidev))
- continue;
- if (!(card = kmalloc(sizeof(hysdn_card), GFP_KERNEL))) {
- printk(KERN_ERR "HYSDN: unable to alloc device mem n");
- return;
- }
- memset(card, 0, sizeof(hysdn_card));
- 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 */
- for (i = 0; pci_subid_map[i].subid; i++)
- if (pci_subid_map[i].subid == card->subsysid) {
- card->brdtype = pci_subid_map[i].cardtyp;
- break;
- }
- if (card->brdtype != BD_NONE) {
- if (ergo_inithardware(card)) {
- printk(KERN_WARNING "HYSDN: card at io 0x%04x already in usen", card->iobase);
- kfree(card);
- continue;
- }
- } else {
- printk(KERN_WARNING "HYSDN: unknown card id 0x%04xn", card->subsysid);
- kfree(card); /* release mem */
- continue;
- }
- 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 */
- } /* device found */
- } /* search_cards */
- /************************************************************************************/
- /* free_resources frees the acquired PCI resources and returns the allocated memory */
- /************************************************************************************/
- static void
- free_resources(void)
- {
- hysdn_card *card;
- while (card_root) {
- card = card_root;
- if (card->releasehardware)
- card->releasehardware(card); /* free all hardware resources */
- card_root = card_root->next; /* remove card from chain */
- kfree(card); /* return mem */
- } /* while card_root */
- } /* free_resources */
- /**************************************************************************/
- /* stop_cards disables (hardware resets) all cards and disables interrupt */
- /**************************************************************************/
- static void
- stop_cards(void)
- {
- hysdn_card *card;
- card = card_root; /* first in chain */
- while (card) {
- if (card->stopcard)
- card->stopcard(card);
- card = card->next; /* remove card from chain */
- } /* while card */
- } /* stop_cards */
- /****************************************************************************/
- /* 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. */
- /****************************************************************************/
- /******************************************************/
- /* extract revision number from string for log output */
- /******************************************************/
- char *
- hysdn_getrev(const char *revision)
- {
- char *rev;
- char *p;
- if ((p = strchr(revision, ':'))) {
- rev = p + 2;
- p = strchr(rev, '$');
- *--p = 0;
- } else
- rev = "???";
- return rev;
- }
- /****************************************************************************/
- /* 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 __init
- hysdn_init(void)
- {
- char tmp[50];
- strcpy(tmp, hysdn_init_revision);
- printk(KERN_NOTICE "HYSDN: module Rev: %s loadedn", hysdn_getrev(tmp));
- strcpy(tmp, hysdn_net_revision);
- printk(KERN_NOTICE "HYSDN: network interface Rev: %s n", hysdn_getrev(tmp));
- if (!pci_present()) {
- printk(KERN_ERR "HYSDN: no PCI bus present, module not loadedn");
- return (-1);
- }
- search_cards();
- printk(KERN_INFO "HYSDN: %d card(s) found.n", cardmax);
- if (hysdn_procconf_init()) {
- free_resources(); /* proc file_sys not created */
- return (-1);
- }
- #ifdef CONFIG_HYSDN_CAPI
- if(cardmax > 0) {
- if(hycapi_init()) {
- printk(KERN_ERR "HYCAPI: init failedn");
- return(-1);
- }
- }
- #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)
- {
- #ifdef CONFIG_HYSDN_CAPI
- hysdn_card *card;
- #endif /* CONFIG_HYSDN_CAPI */
- stop_cards();
- #ifdef CONFIG_HYSDN_CAPI
- card = card_root; /* first in chain */
- while (card) {
- hycapi_capi_release(card);
- card = card->next; /* remove card from chain */
- } /* while card */
- hycapi_cleanup();
- #endif /* CONFIG_HYSDN_CAPI */
- hysdn_procconf_release();
- free_resources();
- printk(KERN_NOTICE "HYSDN: module unloadedn");
- } /* cleanup_module */
- module_init(hysdn_init);
- module_exit(hysdn_exit);