text: /* $Id: b1pci.c,v 1.1.2.2 2004/01/16 21:09:27 keil Exp $
   *
   * Module for AVM B1 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 <asm/io.h>
  #include <linux/init.h>
  #include <linux/isdn/capicmd.h>
  #include <linux/isdn/capiutil.h>
  #include <linux/isdn/capilli.h>
  #include "avmcard.h"
  
  /* ------------------------------------------------------------- */
  
  static char *revision = "$Revision: 1.1.2.2 $";
  
  /* ------------------------------------------------------------- */
  
  static struct pci_device_id b1pci_pci_tbl[] = {
  	{ PCI_VENDOR_ID_AVM, PCI_DEVICE_ID_AVM_B1, PCI_ANY_ID, PCI_ANY_ID },
  	{ }				/* Terminating entry */
  };
  
  MODULE_DEVICE_TABLE(pci, b1pci_pci_tbl);
  MODULE_DESCRIPTION("CAPI4Linux: Driver for AVM B1 PCI card");
  MODULE_AUTHOR("Carsten Paeth");
  MODULE_LICENSE("GPL");
  
  /* ------------------------------------------------------------- */
  
  static char *b1pci_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 int b1pci_probe(struct capicardparams *p, struct pci_dev *pdev)
  {
  	avmcard *card;
  	avmctrl_info *cinfo;
  	int retval;
  
  	card = b1_alloc_card(1);
  	if (!card) {
  		printk(KERN_WARNING "b1pci: no memory.\n");
  		retval = -ENOMEM;
  		goto err;
  	}
  
  	cinfo = card->ctrlinfo;
  	sprintf(card->name, "b1pci-%x", p->port);
  	card->port = p->port;
  	card->irq = p->irq;
  	card->cardtype = avm_b1pci;
  
  	if (!request_region(card->port, AVMB1_PORTLEN, card->name)) {
  		printk(KERN_WARNING "b1pci: ports 0x%03x-0x%03x in use.\n",
  		       card->port, card->port + AVMB1_PORTLEN);
  		retval = -EBUSY;
  		goto err_free;
  	}
  	b1_reset(card->port);
  	retval = b1_detect(card->port, card->cardtype);
  	if (retval) {
  		printk(KERN_NOTICE "b1pci: NO card at 0x%x (%d)\n",
  		       card->port, retval);
  		retval = -ENODEV;
  		goto err_release_region;
  	}
  	b1_reset(card->port);
  	b1_getrevision(card);
  
  	retval = request_irq(card->irq, b1_interrupt, IRQF_SHARED, card->name, card);
  	if (retval) {
  		printk(KERN_ERR "b1pci: unable to get IRQ %d.\n", card->irq);
  		retval = -EBUSY;
  		goto err_release_region;
  	}
  
  	cinfo->capi_ctrl.driver_name   = "b1pci";
  	cinfo->capi_ctrl.driverdata    = cinfo;
  	cinfo->capi_ctrl.register_appl = b1_register_appl;
  	cinfo->capi_ctrl.release_appl  = b1_release_appl;
  	cinfo->capi_ctrl.send_message  = b1_send_message;
  	cinfo->capi_ctrl.load_firmware = b1_load_firmware;
  	cinfo->capi_ctrl.reset_ctr     = b1_reset_ctr;
  	cinfo->capi_ctrl.procinfo      = b1pci_procinfo;
  	cinfo->capi_ctrl.proc_show     = b1_proc_show;
  	strcpy(cinfo->capi_ctrl.name, card->name);
  	cinfo->capi_ctrl.owner         = THIS_MODULE;
  
  	retval = attach_capi_ctr(&cinfo->capi_ctrl);
  	if (retval) {
  		printk(KERN_ERR "b1pci: attach controller failed.\n");
  		goto err_free_irq;
  	}
  
  	if (card->revision >= 4) {
  		printk(KERN_INFO "b1pci: AVM B1 PCI V4 at i/o %#x, irq %d, revision %d (no dma)\n",
  		       card->port, card->irq, card->revision);
  	} else {
  		printk(KERN_INFO "b1pci: AVM B1 PCI at i/o %#x, irq %d, revision %d\n",
  		       card->port, card->irq, card->revision);
  	}
  
  	pci_set_drvdata(pdev, card);
  	return 0;
  
  err_free_irq:
  	free_irq(card->irq, card);
  err_release_region:
  	release_region(card->port, AVMB1_PORTLEN);
  err_free:
  	b1_free_card(card);
  err:
  	return retval;
  }
  
  static void b1pci_remove(struct pci_dev *pdev)
  {
  	avmcard *card = pci_get_drvdata(pdev);
  	avmctrl_info *cinfo = card->ctrlinfo;
  	unsigned int port = card->port;
  
  	b1_reset(port);
  	b1_reset(port);
  
  	detach_capi_ctr(&cinfo->capi_ctrl);
  	free_irq(card->irq, card);
  	release_region(card->port, AVMB1_PORTLEN);
  	b1_free_card(card);
  }
  
  #ifdef CONFIG_ISDN_DRV_AVMB1_B1PCIV4
  /* ------------------------------------------------------------- */
  
  static char *b1pciv4_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 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->membase : 0,
  		cinfo->card ? cinfo->card->revision : 0
  		);
  	return cinfo->infobuf;
  }
  
  /* ------------------------------------------------------------- */
  
  static int b1pciv4_probe(struct capicardparams *p, struct pci_dev *pdev)
  {
  	avmcard *card;
  	avmctrl_info *cinfo;
  	int retval;
  
  	card = b1_alloc_card(1);
  	if (!card) {
  		printk(KERN_WARNING "b1pci: no memory.\n");
  		retval = -ENOMEM;
  		goto err;
  	}
  
  	card->dma = avmcard_dma_alloc("b1pci", pdev, 2048 + 128, 2048 + 128);
  	if (!card->dma) {
  		printk(KERN_WARNING "b1pci: dma alloc.\n");
  		retval = -ENOMEM;
  		goto err_free;
  	}
  
  	cinfo = card->ctrlinfo;
  	sprintf(card->name, "b1pciv4-%x", p->port);
  	card->port = p->port;
  	card->irq = p->irq;
  	card->membase = p->membase;
  	card->cardtype = avm_b1pci;
  
  	if (!request_region(card->port, AVMB1_PORTLEN, card->name)) {
  		printk(KERN_WARNING "b1pci: 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 "b1pci: can't remap memory at 0x%lx\n",
  		       card->membase);
  		retval = -ENOMEM;
  		goto err_release_region;
  	}
  
  	b1dma_reset(card);
  
  	retval = b1pciv4_detect(card);
  	if (retval) {
  		printk(KERN_NOTICE "b1pci: NO card at 0x%x (%d)\n",
  		       card->port, retval);
  		retval = -ENODEV;
  		goto err_unmap;
  	}
  	b1dma_reset(card);
  	b1_getrevision(card);
  
  	retval = request_irq(card->irq, b1dma_interrupt, IRQF_SHARED, card->name, card);
  	if (retval) {
  		printk(KERN_ERR "b1pci: unable to get IRQ %d.\n",
  		       card->irq);
  		retval = -EBUSY;
  		goto err_unmap;
  	}
  
  	cinfo->capi_ctrl.owner         = THIS_MODULE;
  	cinfo->capi_ctrl.driver_name   = "b1pciv4";
  	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      = b1pciv4_procinfo;
  	cinfo->capi_ctrl.proc_show     = b1dma_proc_show;
  	strcpy(cinfo->capi_ctrl.name, card->name);
  
  	retval = attach_capi_ctr(&cinfo->capi_ctrl);
  	if (retval) {
  		printk(KERN_ERR "b1pci: attach controller failed.\n");
  		goto err_free_irq;
  	}
  	card->cardnr = cinfo->capi_ctrl.cnr;
  
  	printk(KERN_INFO "b1pci: AVM B1 PCI V4 at i/o %#x, irq %d, mem %#lx, revision %d (dma)\n",
  	       card->port, card->irq, card->membase, card->revision);
  
  	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 b1pciv4_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);
  }
  
  #endif /* CONFIG_ISDN_DRV_AVMB1_B1PCIV4 */
  
  static int b1pci_pci_probe(struct pci_dev *pdev,
  			   const struct pci_device_id *ent)
  {
  	struct capicardparams param;
  	int retval;
  
  	if (pci_enable_device(pdev) < 0) {
  		printk(KERN_ERR "b1pci: failed to enable AVM-B1\n");
  		return -ENODEV;
  	}
  	param.irq = pdev->irq;
  
  	if (pci_resource_start(pdev, 2)) { /* B1 PCI V4 */
  #ifdef CONFIG_ISDN_DRV_AVMB1_B1PCIV4
  		pci_set_master(pdev);
  #endif
  		param.membase = pci_resource_start(pdev, 0);
  		param.port = pci_resource_start(pdev, 2);
  
  		printk(KERN_INFO "b1pci: PCI BIOS reports AVM-B1 V4 at i/o %#x, irq %d, mem %#x\n",
  		       param.port, param.irq, param.membase);
  #ifdef CONFIG_ISDN_DRV_AVMB1_B1PCIV4
  		retval = b1pciv4_probe(&param, pdev);
  #else
  		retval = b1pci_probe(&param, pdev);
  #endif
  		if (retval != 0) {
  			printk(KERN_ERR "b1pci: no AVM-B1 V4 at i/o %#x, irq %d, mem %#x detected\n",
  			       param.port, param.irq, param.membase);
  		}
  	} else {
  		param.membase = 0;
  		param.port = pci_resource_start(pdev, 1);
  
  		printk(KERN_INFO "b1pci: PCI BIOS reports AVM-B1 at i/o %#x, irq %d\n",
  		       param.port, param.irq);
  		retval = b1pci_probe(&param, pdev);
  		if (retval != 0) {
  			printk(KERN_ERR "b1pci: no AVM-B1 at i/o %#x, irq %d detected\n",
  			       param.port, param.irq);
  		}
  	}
  	return retval;
  }
  
  static void b1pci_pci_remove(struct pci_dev *pdev)
  {
  #ifdef CONFIG_ISDN_DRV_AVMB1_B1PCIV4
  	avmcard *card = pci_get_drvdata(pdev);
  
  	if (card->dma)
  		b1pciv4_remove(pdev);
  	else
  		b1pci_remove(pdev);
  #else
  	b1pci_remove(pdev);
  #endif
  }
  
  static struct pci_driver b1pci_pci_driver = {
  	.name		= "b1pci",
  	.id_table	= b1pci_pci_tbl,
  	.probe		= b1pci_pci_probe,
  	.remove		= b1pci_pci_remove,
  };
  
  static struct capi_driver capi_driver_b1pci = {
  	.name		= "b1pci",
  	.revision	= "1.0",
  };
  #ifdef CONFIG_ISDN_DRV_AVMB1_B1PCIV4
  static struct capi_driver capi_driver_b1pciv4 = {
  	.name		= "b1pciv4",
  	.revision	= "1.0",
  };
  #endif
  
  static int __init b1pci_init(void)
  {
  	char *p;
  	char rev[32];
  	int err;
  
  	if ((p = strchr(revision, ':')) != NULL && p[1]) {
  		strlcpy(rev, p + 2, 32);
  		if ((p = strchr(rev, '$')) != NULL && p > rev)
  			*(p - 1) = 0;
  	} else
  		strcpy(rev, "1.0");
  
  
  	err = pci_register_driver(&b1pci_pci_driver);
  	if (!err) {
  		strlcpy(capi_driver_b1pci.revision, rev, 32);
  		register_capi_driver(&capi_driver_b1pci);
  #ifdef CONFIG_ISDN_DRV_AVMB1_B1PCIV4
  		strlcpy(capi_driver_b1pciv4.revision, rev, 32);
  		register_capi_driver(&capi_driver_b1pciv4);
  #endif
  		printk(KERN_INFO "b1pci: revision %s\n", rev);
  	}
  	return err;
  }
  
  static void __exit b1pci_exit(void)
  {
  	unregister_capi_driver(&capi_driver_b1pci);
  #ifdef CONFIG_ISDN_DRV_AVMB1_B1PCIV4
  	unregister_capi_driver(&capi_driver_b1pciv4);
  #endif
  	pci_unregister_driver(&b1pci_pci_driver);
  }
  
  module_init(b1pci_init);
  module_exit(b1pci_exit);
  