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/* -*- 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.

 */

#ifndef __hppa__

#error "lasi700 only compiles on hppa architecture"

#endif

#include <linux/kernel.h>

#include <linux/init.h>

#include <linux/types.h>

#include <linux/stat.h>

#include <linux/mm.h>

#include <linux/blk.h>

#include <linux/sched.h>

#include <linux/version.h>

#include <linux/config.h>

#include <linux/ioport.h>

#include <asm/page.h>

#include <asm/pgtable.h>

#include <asm/irq.h>

#include <asm/hardware.h>

#include <asm/delay.h>

#include <asm/gsc.h>

#include <linux/module.h>

#include "scsi.h"

#include "hosts.h"

#include "constants.h"

#include "lasi700.h"

#include "53c700.h"

#ifdef MODULE

char *lasi700;                  /* command line from insmod */

MODULE_AUTHOR("James Bottomley");

MODULE_DESCRIPTION("lasi700 SCSI Driver");

MODULE_LICENSE("GPL");

MODULE_PARM(lasi700, "s");

#endif

#ifdef MODULE

#define ARG_SEP ' '

#else

#define ARG_SEP ','

#endif

static unsigned long __initdata opt_base;

static int __initdata opt_irq;

static int __init

param_setup(char *string)

{

        char *pos = string, *next;

        while(pos != NULL && (next = strchr(pos, ':')) != NULL) {

                int val = (int)simple_strtoul(++next, NULL, 0);

                if(!strncmp(pos, "addr:", 5))

                        opt_base = val;

                else if(!strncmp(pos, "irq:", 4))

                        opt_irq = val;

                if((pos = strchr(pos, ARG_SEP)) != NULL)

                        pos++;

        }

        return 1;

}

#ifndef MODULE

__setup("lasi700=", param_setup);

#endif

static Scsi_Host_Template __initdata *host_tpnt = NULL;

static int __initdata host_count = 0;

static struct parisc_device_id lasi700_scsi_tbl[] = {

        LASI700_ID_TABLE,

        LASI710_ID_TABLE,

        { 0 }

};

MODULE_DEVICE_TABLE(parisc, lasi700_scsi_tbl);

static struct parisc_driver lasi700_driver = LASI700_DRIVER;

static int __init

lasi700_detect(Scsi_Host_Template *tpnt)

{

        host_tpnt = tpnt;

#ifdef MODULE

        if(lasi700)

                param_setup(lasi700);

#endif

        register_parisc_driver(&lasi700_driver);

        return (host_count != 0);

}

static int __init

lasi700_driver_callback(struct parisc_device *dev)

{

        unsigned long base = dev->hpa + LASI_SCSI_CORE_OFFSET;

        char *driver_name;

        struct Scsi_Host *host;

        struct NCR_700_Host_Parameters *hostdata =

                kmalloc(sizeof(struct NCR_700_Host_Parameters),

                        GFP_KERNEL);

        if(dev->id.sversion == LASI_700_SVERSION) {

                driver_name = "lasi700";

        } else {

                driver_name = "lasi710";

        }

        if(hostdata == NULL) {

                printk(KERN_ERR "%s: Failed to allocate host data\n",

                       driver_name);

                return 1;

        }

        memset(hostdata, 0, sizeof(struct NCR_700_Host_Parameters));

        hostdata->base = base;

        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->pci_dev = ccio_get_fake(dev);

        if((host = NCR_700_detect(host_tpnt, hostdata)) == NULL) {

                kfree(hostdata);

                return 1;

        }

        host->irq = dev->irq;

        if(request_irq(dev->irq, NCR_700_intr, SA_SHIRQ, driver_name, host)) {

                printk(KERN_ERR "%s: irq problem, detaching\n",

                       driver_name);

                scsi_unregister(host);

                NCR_700_release(host);

                return 1;

        }

        host_count++;

        return 0;

}

static int

lasi700_release(struct Scsi_Host *host)

{

        struct D700_Host_Parameters *hostdata =

                (struct D700_Host_Parameters *)host->hostdata[0];

        NCR_700_release(host);

        kfree(hostdata);

        free_irq(host->irq, host);

        unregister_parisc_driver(&lasi700_driver);

        return 1;

}

static Scsi_Host_Template driver_template = LASI700_SCSI;

#include "scsi_module.c"