/* -*- mode: c; c-basic-offset: 8 -*- */
  
  /* PARISC LASI driver for the 53c700 chip
   *
   * Copyright (C) 2001 by James.Bottomley@HansenPartnership.com
  **-----------------------------------------------------------------------------
  **  
  **  This program is free software; you can redistribute it and/or modify
  **  it under the terms of the GNU General Public License as published by
  **  the Free Software Foundation; either version 2 of the License, or
  **  (at your option) any later version.
  **
  **  This program is distributed in the hope that it will be useful,
  **  but WITHOUT ANY WARRANTY; without even the implied warranty of
  **  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  **  GNU General Public License for more details.
  **
  **  You should have received a copy of the GNU General Public License
  **  along with this program; if not, write to the Free Software
  **  Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
  **
  **-----------------------------------------------------------------------------
   */
  
  /*
   * Many thanks to Richard Hirst <rhirst@linuxcare.com> for patiently
   * debugging this driver on the parisc architecture and suggesting
   * many improvements and bug fixes.
   *
   * Thanks also go to Linuxcare Inc. for providing several PARISC
   * machines for me to debug the driver on.
   */
  
  #include <linux/kernel.h>
  #include <linux/module.h>
  #include <linux/init.h>
  #include <linux/types.h>
  #include <linux/stat.h>
  #include <linux/mm.h>
  #include <linux/blkdev.h>

  #include <linux/ioport.h>
  #include <linux/dma-mapping.h>

  #include <linux/slab.h>

  
  #include <asm/page.h>
  #include <asm/pgtable.h>
  #include <asm/irq.h>
  #include <asm/hardware.h>
  #include <asm/parisc-device.h>
  #include <asm/delay.h>
  
  #include <scsi/scsi_host.h>
  #include <scsi/scsi_device.h>
  #include <scsi/scsi_transport.h>
  #include <scsi/scsi_transport_spi.h>
  
  #include "53c700.h"
  
  MODULE_AUTHOR("James Bottomley");
  MODULE_DESCRIPTION("lasi700 SCSI Driver");
  MODULE_LICENSE("GPL");
  
  #define LASI_700_SVERSION 0x00071
  #define LASI_710_SVERSION 0x00082
  
  #define LASI700_ID_TABLE {			\
  	.hw_type	= HPHW_FIO,		\
  	.sversion	= LASI_700_SVERSION,	\
  	.hversion	= HVERSION_ANY_ID,	\
  	.hversion_rev	= HVERSION_REV_ANY_ID,	\
  }
  
  #define LASI710_ID_TABLE {			\
  	.hw_type	= HPHW_FIO,		\
  	.sversion	= LASI_710_SVERSION,	\
  	.hversion	= HVERSION_ANY_ID,	\
  	.hversion_rev	= HVERSION_REV_ANY_ID,	\
  }
  
  #define LASI700_CLOCK	25
  #define LASI710_CLOCK	40
  #define LASI_SCSI_CORE_OFFSET 0x100
  
  static struct parisc_device_id lasi700_ids[] = {
  	LASI700_ID_TABLE,
  	LASI710_ID_TABLE,
  	{ 0 }
  };
  
  static struct scsi_host_template lasi700_template = {
  	.name		= "LASI SCSI 53c700",
  	.proc_name	= "lasi700",
  	.this_id	= 7,
  	.module		= THIS_MODULE,
  };
  MODULE_DEVICE_TABLE(parisc, lasi700_ids);
  
  static int __init
  lasi700_probe(struct parisc_device *dev)
  {

  	unsigned long base = dev->hpa.start + LASI_SCSI_CORE_OFFSET;

  	struct NCR_700_Host_Parameters *hostdata;
  	struct Scsi_Host *host;

  	hostdata = kzalloc(sizeof(*hostdata), GFP_KERNEL);

  	if (!hostdata) {

  		dev_printk(KERN_ERR, &dev->dev, "Failed to allocate host data
  ");

  		return -ENOMEM;
  	}

  
  	hostdata->dev = &dev->dev;

  	dma_set_mask(&dev->dev, DMA_BIT_MASK(32));

  	hostdata->base = ioremap_nocache(base, 0x100);

  	hostdata->differential = 0;
  
  	if (dev->id.sversion == LASI_700_SVERSION) {
  		hostdata->clock = LASI700_CLOCK;
  		hostdata->force_le_on_be = 1;
  	} else {
  		hostdata->clock = LASI710_CLOCK;
  		hostdata->force_le_on_be = 0;
  		hostdata->chip710 = 1;
  		hostdata->dmode_extra = DMODE_FC2;

  		hostdata->burst_length = 8;

  	}

  	host = NCR_700_detect(&lasi700_template, hostdata, &dev->dev);
  	if (!host)
  		goto out_kfree;
  	host->this_id = 7;

  	host->base = base;

  	host->irq = dev->irq;

  	if(request_irq(dev->irq, NCR_700_intr, IRQF_SHARED, "lasi700", host)) {

  		printk(KERN_ERR "lasi700: request_irq failed!
  ");
  		goto out_put_host;
  	}
  
  	dev_set_drvdata(&dev->dev, host);
  	scsi_scan_host(host);
  
  	return 0;
  
   out_put_host:
  	scsi_host_put(host);
   out_kfree:
  	iounmap(hostdata->base);
  	kfree(hostdata);
  	return -ENODEV;
  }
  
  static int __exit
  lasi700_driver_remove(struct parisc_device *dev)
  {
  	struct Scsi_Host *host = dev_get_drvdata(&dev->dev);
  	struct NCR_700_Host_Parameters *hostdata = 
  		(struct NCR_700_Host_Parameters *)host->hostdata[0];
  
  	scsi_remove_host(host);
  	NCR_700_release(host);
  	free_irq(host->irq, host);
  	iounmap(hostdata->base);
  	kfree(hostdata);
  
  	return 0;
  }
  
  static struct parisc_driver lasi700_driver = {

  	.name =		"lasi_scsi",

  	.id_table =	lasi700_ids,
  	.probe =	lasi700_probe,
  	.remove =	__devexit_p(lasi700_driver_remove),
  };
  
  static int __init
  lasi700_init(void)
  {
  	return register_parisc_driver(&lasi700_driver);
  }
  
  static void __exit
  lasi700_exit(void)
  {
  	unregister_parisc_driver(&lasi700_driver);
  }
  
  module_init(lasi700_init);
  module_exit(lasi700_exit);