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path: root/drivers/isdn/hysdn/hysdn_init.c
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-rw-r--r--drivers/isdn/hysdn/hysdn_init.c254
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 00000000000..5cac2bf5f4b
--- /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);