/* $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/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[] = { {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: 1.6.6.6 $"; static 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 use\n", card->iobase); kfree(card); continue; } } else { printk(KERN_WARNING "HYSDN: unknown card id 0x%04x\n", 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 loaded\n", hysdn_getrev(tmp)); strcpy(tmp, hysdn_net_revision); printk(KERN_NOTICE "HYSDN: network interface Rev: %s \n", hysdn_getrev(tmp)); 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 failed\n"); 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 unloaded\n"); } /* cleanup_module */ module_init(hysdn_init); module_exit(hysdn_exit);