diff options
Diffstat (limited to 'drivers/isdn/hysdn/hysdn_init.c')
| -rw-r--r-- | drivers/isdn/hysdn/hysdn_init.c | 254 |
1 files changed, 254 insertions, 0 deletions
diff --git a/drivers/isdn/hysdn/hysdn_init.c b/drivers/isdn/hysdn/hysdn_init.c new file mode 100644 index 000000000000..5cac2bf5f4b0 --- /dev/null +++ b/drivers/isdn/hysdn/hysdn_init.c @@ -0,0 +1,254 @@ +/* $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 $"; +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); |