/* $Id: b1isa.c,v 1.1.4.1 2001/11/20 14:19:34 kai Exp $ * * Module for AVM B1 ISA-card. * * Copyright 1999 by Carsten Paeth * * This software may be used and distributed according to the terms * of the GNU General Public License, incorporated herein by reference. * */ #include #include #include #include #include #include #include #include #include #include #include "capicmd.h" #include "capiutil.h" #include "capilli.h" #include "avmcard.h" static char *revision = "$Revision: 1.1.4.1 $"; /* ------------------------------------------------------------- */ MODULE_DESCRIPTION("CAPI4Linux: Driver for AVM B1 ISA card"); MODULE_AUTHOR("Carsten Paeth"); MODULE_LICENSE("GPL"); /* ------------------------------------------------------------- */ static void b1isa_interrupt(int interrupt, void *devptr, struct pt_regs *regs) { avmcard *card; card = (avmcard *) devptr; if (!card) { printk(KERN_WARNING "b1_interrupt: wrong device\n"); return; } if (card->interrupt) { printk(KERN_ERR "b1_interrupt: reentering interrupt hander (%s)\n", card->name); return; } card->interrupt = 1; b1_handle_interrupt(card); card->interrupt = 0; } /* ------------------------------------------------------------- */ static struct capi_driver_interface *di; /* ------------------------------------------------------------- */ static void b1isa_remove_ctr(struct capi_ctr *ctrl) { avmctrl_info *cinfo = (avmctrl_info *)(ctrl->driverdata); avmcard *card = cinfo->card; unsigned int port = card->port; b1_reset(port); b1_reset(port); di->detach_ctr(ctrl); free_irq(card->irq, card); release_region(card->port, AVMB1_PORTLEN); kfree(card->ctrlinfo); kfree(card); MOD_DEC_USE_COUNT; } /* ------------------------------------------------------------- */ static int b1isa_add_card(struct capi_driver *driver, struct capicardparams *p) { avmctrl_info *cinfo; avmcard *card; int retval; MOD_INC_USE_COUNT; card = (avmcard *) kmalloc(sizeof(avmcard), GFP_ATOMIC); if (!card) { printk(KERN_WARNING "b1isa: no memory.\n"); MOD_DEC_USE_COUNT; return -ENOMEM; } memset(card, 0, sizeof(avmcard)); cinfo = (avmctrl_info *) kmalloc(sizeof(avmctrl_info), GFP_ATOMIC); if (!cinfo) { printk(KERN_WARNING "b1isa: no memory.\n"); kfree(card); MOD_DEC_USE_COUNT; return -ENOMEM; } memset(cinfo, 0, sizeof(avmctrl_info)); card->ctrlinfo = cinfo; cinfo->card = card; sprintf(card->name, "b1isa-%x", p->port); card->port = p->port; card->irq = p->irq; card->cardtype = avm_b1isa; if (check_region(card->port, AVMB1_PORTLEN)) { printk(KERN_WARNING "b1isa: ports 0x%03x-0x%03x in use.\n", card->port, card->port + AVMB1_PORTLEN); kfree(card->ctrlinfo); kfree(card); MOD_DEC_USE_COUNT; return -EBUSY; } if (b1_irq_table[card->irq & 0xf] == 0) { printk(KERN_WARNING "b1isa: irq %d not valid.\n", card->irq); kfree(card->ctrlinfo); kfree(card); MOD_DEC_USE_COUNT; return -EINVAL; } if ( card->port != 0x150 && card->port != 0x250 && card->port != 0x300 && card->port != 0x340) { printk(KERN_WARNING "b1isa: illegal port 0x%x.\n", card->port); kfree(card->ctrlinfo); kfree(card); MOD_DEC_USE_COUNT; return -EINVAL; } b1_reset(card->port); if ((retval = b1_detect(card->port, card->cardtype)) != 0) { printk(KERN_NOTICE "b1isa: NO card at 0x%x (%d)\n", card->port, retval); kfree(card->ctrlinfo); kfree(card); MOD_DEC_USE_COUNT; return -EIO; } b1_reset(card->port); b1_getrevision(card); request_region(p->port, AVMB1_PORTLEN, card->name); retval = request_irq(card->irq, b1isa_interrupt, 0, card->name, card); if (retval) { printk(KERN_ERR "b1isa: unable to get IRQ %d.\n", card->irq); release_region(card->port, AVMB1_PORTLEN); kfree(card->ctrlinfo); kfree(card); MOD_DEC_USE_COUNT; return -EBUSY; } cinfo->capi_ctrl = di->attach_ctr(driver, card->name, cinfo); if (!cinfo->capi_ctrl) { printk(KERN_ERR "b1isa: attach controller failed.\n"); free_irq(card->irq, card); release_region(card->port, AVMB1_PORTLEN); kfree(card->ctrlinfo); kfree(card); MOD_DEC_USE_COUNT; return -EBUSY; } printk(KERN_INFO "%s: AVM B1 ISA at i/o %#x, irq %d, revision %d\n", driver->name, card->port, card->irq, card->revision); return 0; } static char *b1isa_procinfo(struct capi_ctr *ctrl) { avmctrl_info *cinfo = (avmctrl_info *)(ctrl->driverdata); if (!cinfo) return ""; sprintf(cinfo->infobuf, "%s %s 0x%x %d r%d", cinfo->cardname[0] ? cinfo->cardname : "-", cinfo->version[VER_DRIVER] ? cinfo->version[VER_DRIVER] : "-", cinfo->card ? cinfo->card->port : 0x0, cinfo->card ? cinfo->card->irq : 0, cinfo->card ? cinfo->card->revision : 0 ); return cinfo->infobuf; } /* ------------------------------------------------------------- */ static struct capi_driver b1isa_driver = { name: "b1isa", revision: "0.0", load_firmware: b1_load_firmware, reset_ctr: b1_reset_ctr, remove_ctr: b1isa_remove_ctr, register_appl: b1_register_appl, release_appl: b1_release_appl, send_message: b1_send_message, procinfo: b1isa_procinfo, ctr_read_proc: b1ctl_read_proc, driver_read_proc: 0, /* use standard driver_read_proc */ add_card: b1isa_add_card, }; static int __init b1isa_init(void) { struct capi_driver *driver = &b1isa_driver; char *p; int retval = 0; MOD_INC_USE_COUNT; if ((p = strchr(revision, ':')) != 0 && p[1]) { strncpy(driver->revision, p + 2, sizeof(driver->revision)); driver->revision[sizeof(driver->revision)-1] = 0; if ((p = strchr(driver->revision, '$')) != 0 && p > driver->revision) *(p-1) = 0; } printk(KERN_INFO "%s: revision %s\n", driver->name, driver->revision); di = attach_capi_driver(driver); if (!di) { printk(KERN_ERR "%s: failed to attach capi_driver\n", driver->name); retval = -EIO; } MOD_DEC_USE_COUNT; return retval; } static void __exit b1isa_exit(void) { detach_capi_driver(&b1isa_driver); } module_init(b1isa_init); module_exit(b1isa_exit);