text: /* $Id: t1pci.c,v 1.1.2.2 2004/01/16 21:09:27 keil Exp $
   * 
   * Module for AVM T1 PCI-card.
   * 
   * Copyright 1999 by Carsten Paeth <calle@calle.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/kernel.h>
  #include <linux/skbuff.h>
  #include <linux/delay.h>
  #include <linux/mm.h>
  #include <linux/interrupt.h>
  #include <linux/ioport.h>
  #include <linux/pci.h>
  #include <linux/capi.h>
  #include <linux/init.h>
  #include <asm/io.h>
  #include <linux/isdn/capicmd.h>
  #include <linux/isdn/capiutil.h>
  #include <linux/isdn/capilli.h>
  #include "avmcard.h"
  
  #undef CONFIG_T1PCI_DEBUG
  #undef CONFIG_T1PCI_POLLDEBUG
  
  /* ------------------------------------------------------------- */
  static char *revision = "$Revision: 1.1.2.2 $";
  /* ------------------------------------------------------------- */
  
  static struct pci_device_id t1pci_pci_tbl[] = {
  	{ PCI_VENDOR_ID_AVM, PCI_DEVICE_ID_AVM_T1, PCI_ANY_ID, PCI_ANY_ID },
  	{ }				/* Terminating entry */
  };
  
  MODULE_DEVICE_TABLE(pci, t1pci_pci_tbl);
  MODULE_DESCRIPTION("CAPI4Linux: Driver for AVM T1 PCI card");
  MODULE_AUTHOR("Carsten Paeth");
  MODULE_LICENSE("GPL");
  
  /* ------------------------------------------------------------- */
  
  static char *t1pci_procinfo(struct capi_ctr *ctrl);
  
  static int t1pci_add_card(struct capicardparams *p, struct pci_dev *pdev)
  {
  	avmcard *card;
  	avmctrl_info *cinfo;
  	int retval;
  
  	card = b1_alloc_card(1);
  	if (!card) {
  		printk(KERN_WARNING "t1pci: no memory.\n");
  		retval = -ENOMEM;
  		goto err;
  	}
  
          card->dma = avmcard_dma_alloc("t1pci", pdev, 2048+128, 2048+128);
  	if (!card->dma) {
  		printk(KERN_WARNING "t1pci: no memory.\n");
  		retval = -ENOMEM;
  		goto err_free;
  	}
  
  	cinfo = card->ctrlinfo;
  	sprintf(card->name, "t1pci-%x", p->port);
  	card->port = p->port;
  	card->irq = p->irq;
  	card->membase = p->membase;
  	card->cardtype = avm_t1pci;
  
  	if (!request_region(card->port, AVMB1_PORTLEN, card->name)) {
  		printk(KERN_WARNING "t1pci: ports 0x%03x-0x%03x in use.\n",
  		       card->port, card->port + AVMB1_PORTLEN);
  		retval = -EBUSY;
  		goto err_free_dma;
  	}
  
  	card->mbase = ioremap(card->membase, 64);
  	if (!card->mbase) {
  		printk(KERN_NOTICE "t1pci: can't remap memory at 0x%lx\n",
  		       card->membase);
  		retval = -EIO;
  		goto err_release_region;
  	}
  
  	b1dma_reset(card);
  
  	retval = t1pci_detect(card);
  	if (retval != 0) {
  		if (retval < 6)
  			printk(KERN_NOTICE "t1pci: NO card at 0x%x (%d)\n",
  			       card->port, retval);
  		else
  			printk(KERN_NOTICE "t1pci: card at 0x%x, but cable not connected or T1 has no power (%d)\n",
  			       card->port, retval);
  		retval = -EIO;
  		goto err_unmap;
  	}
  	b1dma_reset(card);
  
  	retval = request_irq(card->irq, b1dma_interrupt, IRQF_SHARED, card->name, card);
  	if (retval) {
  		printk(KERN_ERR "t1pci: unable to get IRQ %d.\n", card->irq);
  		retval = -EBUSY;
  		goto err_unmap;
  	}
  
  	cinfo->capi_ctrl.owner         = THIS_MODULE;
  	cinfo->capi_ctrl.driver_name   = "t1pci";
  	cinfo->capi_ctrl.driverdata    = cinfo;
  	cinfo->capi_ctrl.register_appl = b1dma_register_appl;
  	cinfo->capi_ctrl.release_appl  = b1dma_release_appl;
  	cinfo->capi_ctrl.send_message  = b1dma_send_message;
  	cinfo->capi_ctrl.load_firmware = b1dma_load_firmware;
  	cinfo->capi_ctrl.reset_ctr     = b1dma_reset_ctr;
  	cinfo->capi_ctrl.procinfo      = t1pci_procinfo;
  	cinfo->capi_ctrl.ctr_read_proc = b1dmactl_read_proc;
  	strcpy(cinfo->capi_ctrl.name, card->name);
  
  	retval = attach_capi_ctr(&cinfo->capi_ctrl);
  	if (retval) {
  		printk(KERN_ERR "t1pci: attach controller failed.\n");
  		retval = -EBUSY;
  		goto err_free_irq;
  	}
  	card->cardnr = cinfo->capi_ctrl.cnr;
  
  	printk(KERN_INFO "t1pci: AVM T1 PCI at i/o %#x, irq %d, mem %#lx\n",
  	       card->port, card->irq, card->membase);
  
  	pci_set_drvdata(pdev, card);
  	return 0;
  
   err_free_irq:
  	free_irq(card->irq, card);
   err_unmap:
  	iounmap(card->mbase);
   err_release_region:
  	release_region(card->port, AVMB1_PORTLEN);
   err_free_dma:
  	avmcard_dma_free(card->dma);
   err_free:
  	b1_free_card(card);
   err:
  	return retval;
  }
  
  /* ------------------------------------------------------------- */
  
  static void t1pci_remove(struct pci_dev *pdev)
  {
  	avmcard *card = pci_get_drvdata(pdev);
  	avmctrl_info *cinfo = card->ctrlinfo;
  
   	b1dma_reset(card);
  
  	detach_capi_ctr(&cinfo->capi_ctrl);
  	free_irq(card->irq, card);
  	iounmap(card->mbase);
  	release_region(card->port, AVMB1_PORTLEN);
  	avmcard_dma_free(card->dma);
  	b1_free_card(card);
  }
  
  /* ------------------------------------------------------------- */
  
  static char *t1pci_procinfo(struct capi_ctr *ctrl)
  {
  	avmctrl_info *cinfo = (avmctrl_info *)(ctrl->driverdata);
  
  	if (!cinfo)
  		return "";
  	sprintf(cinfo->infobuf, "%s %s 0x%x %d 0x%lx",
  		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->membase : 0
  		);
  	return cinfo->infobuf;
  }
  
  /* ------------------------------------------------------------- */
  
  static int __devinit t1pci_probe(struct pci_dev *dev,
  				 const struct pci_device_id *ent)
  {
  	struct capicardparams param;
  	int retval;
  
  	if (pci_enable_device(dev) < 0) {
  		printk(KERN_ERR	"t1pci: failed to enable AVM-T1-PCI\n");
  		return -ENODEV;
  	}
  	pci_set_master(dev);
  
  	param.port = pci_resource_start(dev, 1);
  	param.irq = dev->irq;
  	param.membase = pci_resource_start(dev, 0);
  
  	printk(KERN_INFO "t1pci: PCI BIOS reports AVM-T1-PCI at i/o %#x, irq %d, mem %#x\n",
  	       param.port, param.irq, param.membase);
  
  	retval = t1pci_add_card(&param, dev);
  	if (retval != 0) {
  		printk(KERN_ERR "t1pci: no AVM-T1-PCI at i/o %#x, irq %d detected, mem %#x\n",
  		       param.port, param.irq, param.membase);
  		return -ENODEV;
  	}
  	return 0;
  }
  
  static struct pci_driver t1pci_pci_driver = {
         .name           = "t1pci",
         .id_table       = t1pci_pci_tbl,
         .probe          = t1pci_probe,
         .remove         = t1pci_remove,
  };
  
  static struct capi_driver capi_driver_t1pci = {
  	.name		= "t1pci",
  	.revision	= "1.0",
  };
  
  static int __init t1pci_init(void)
  {
  	char *p;
  	char rev[32];
  	int err;
  
  	if ((p = strchr(revision, ':')) != 0 && p[1]) {
  		strlcpy(rev, p + 2, 32);
  		if ((p = strchr(rev, '$')) != 0 && p > rev)
  		   *(p-1) = 0;
  	} else
  		strcpy(rev, "1.0");
  
  	err = pci_register_driver(&t1pci_pci_driver);
  	if (!err) {
  		strlcpy(capi_driver_t1pci.revision, rev, 32);
  		register_capi_driver(&capi_driver_t1pci);
  		printk(KERN_INFO "t1pci: revision %s\n", rev);
  	}
  	return err;
  }
  
  static void __exit t1pci_exit(void)
  {
  	unregister_capi_driver(&capi_driver_t1pci);
  	pci_unregister_driver(&t1pci_pci_driver);
  }
  
  module_init(t1pci_init);
  module_exit(t1pci_exit);
  