diff options
Diffstat (limited to 'drivers/isdn/hysdn/hysdn_init.c')
| -rw-r--r-- | drivers/isdn/hysdn/hysdn_init.c | 213 |
1 files changed, 213 insertions, 0 deletions
diff --git a/drivers/isdn/hysdn/hysdn_init.c b/drivers/isdn/hysdn/hysdn_init.c new file mode 100644 index 000000000..0db2f7506 --- /dev/null +++ b/drivers/isdn/hysdn/hysdn_init.c @@ -0,0 +1,213 @@ +/* $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/module.h> +#include <linux/init.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, 0, 0, BD_METRO }, + { PCI_VENDOR_ID_HYPERCOPE, PCI_DEVICE_ID_HYPERCOPE_PLX, + PCI_ANY_ID, PCI_SUBDEVICE_ID_HYPERCOPE_CHAMP2, 0, 0, BD_CHAMP2 }, + { PCI_VENDOR_ID_HYPERCOPE, PCI_DEVICE_ID_HYPERCOPE_PLX, + PCI_ANY_ID, PCI_SUBDEVICE_ID_HYPERCOPE_ERGO, 0, 0, BD_ERGO }, + { PCI_VENDOR_ID_HYPERCOPE, PCI_DEVICE_ID_HYPERCOPE_PLX, + PCI_ANY_ID, PCI_SUBDEVICE_ID_HYPERCOPE_OLD_ERGO, 0, 0, BD_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 int cardmax; /* number of found cards */ +hysdn_card *card_root = NULL; /* pointer to first card */ +static hysdn_card *card_last = NULL; /* pointer to first card */ + + +/****************************************************************************/ +/* 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. */ +/****************************************************************************/ + +/****************************************************************************/ +/* 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 hysdn_pci_init_one(struct pci_dev *akt_pcidev, + const struct pci_device_id *ent) +{ + hysdn_card *card; + int rc; + + rc = pci_enable_device(akt_pcidev); + if (rc) + return rc; + + if (!(card = kzalloc(sizeof(hysdn_card), GFP_KERNEL))) { + printk(KERN_ERR "HYSDN: unable to alloc device mem \n"); + rc = -ENOMEM; + goto err_out; + } + 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 */ + card->brdtype = ent->driver_data; + + if (ergo_inithardware(card)) { + printk(KERN_WARNING "HYSDN: card at io 0x%04x already in use\n", card->iobase); + rc = -EBUSY; + goto err_out_card; + } + + 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 */ + + pci_set_drvdata(akt_pcidev, card); + return 0; + +err_out_card: + kfree(card); +err_out: + pci_disable_device(akt_pcidev); + return rc; +} + +static void hysdn_pci_remove_one(struct pci_dev *akt_pcidev) +{ + hysdn_card *card = pci_get_drvdata(akt_pcidev); + + pci_set_drvdata(akt_pcidev, NULL); + + if (card->stopcard) + card->stopcard(card); + +#ifdef CONFIG_HYSDN_CAPI + hycapi_capi_release(card); +#endif + + if (card->releasehardware) + card->releasehardware(card); /* free all hardware resources */ + + if (card == card_root) { + card_root = card_root->next; + if (!card_root) + card_last = NULL; + } else { + hysdn_card *tmp = card_root; + while (tmp) { + if (tmp->next == card) + tmp->next = card->next; + card_last = tmp; + tmp = tmp->next; + } + } + + kfree(card); + pci_disable_device(akt_pcidev); +} + +static struct pci_driver hysdn_pci_driver = { + .name = "hysdn", + .id_table = hysdn_pci_tbl, + .probe = hysdn_pci_init_one, + .remove = hysdn_pci_remove_one, +}; + +static int hysdn_have_procfs; + +static int __init +hysdn_init(void) +{ + int rc; + + printk(KERN_NOTICE "HYSDN: module loaded\n"); + + rc = pci_register_driver(&hysdn_pci_driver); + if (rc) + return rc; + + printk(KERN_INFO "HYSDN: %d card(s) found.\n", cardmax); + + if (!hysdn_procconf_init()) + hysdn_have_procfs = 1; + +#ifdef CONFIG_HYSDN_CAPI + if (cardmax > 0) { + if (hycapi_init()) { + printk(KERN_ERR "HYCAPI: init failed\n"); + + if (hysdn_have_procfs) + hysdn_procconf_release(); + + pci_unregister_driver(&hysdn_pci_driver); + return -ESPIPE; + } + } +#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) +{ + if (hysdn_have_procfs) + hysdn_procconf_release(); + + pci_unregister_driver(&hysdn_pci_driver); + +#ifdef CONFIG_HYSDN_CAPI + hycapi_cleanup(); +#endif /* CONFIG_HYSDN_CAPI */ + + printk(KERN_NOTICE "HYSDN: module unloaded\n"); +} /* cleanup_module */ + +module_init(hysdn_init); +module_exit(hysdn_exit); |