zorro7xx.c

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/*
 * Detection routine for the NCR53c710 based Amiga SCSI Controllers for Linux.
 *      Amiga MacroSystemUS WarpEngine SCSI controller.
 *      Amiga Technologies/DKB A4091 SCSI controller.
 *
 * Written 1997 by Alan Hourihane <[email protected]>
 * plus modifications of the 53c7xx.c driver to support the Amiga.
 *
 * Rewritten to use 53c700.c by Kars de Jong <[email protected]>
 */

#include <linux/module.h>
#include <linux/init.h>
#include <linux/interrupt.h>
#include <linux/zorro.h>
#include <linux/slab.h>

#include <asm/amigahw.h>
#include <asm/amigaints.h>

#include <scsi/scsi_host.h>
#include <scsi/scsi_transport_spi.h>

#include "53c700.h"

MODULE_AUTHOR("Alan Hourihane <[email protected]> / Kars de Jong <[email protected]>");
MODULE_DESCRIPTION("Amiga Zorro NCR53C710 driver");
MODULE_LICENSE("GPL");


static struct scsi_host_template zorro7xx_scsi_driver_template = {
    .proc_name  = "zorro7xx",
    .this_id    = 7,
    .module     = THIS_MODULE,
};

static struct zorro_driver_data {
    const char *name;
    unsigned long offset;
    int absolute;   /* offset is absolute address */
} zorro7xx_driver_data[] __devinitdata = {
    { .name = "PowerUP 603e+", .offset = 0xf40000, .absolute = 1 },
    { .name = "WarpEngine 40xx", .offset = 0x40000 },
    { .name = "A4091", .offset = 0x800000 },
    { .name = "GForce 040/060", .offset = 0x40000 },
    { 0 }
};

static struct zorro_device_id zorro7xx_zorro_tbl[] __devinitdata = {
    {
        .id = ZORRO_PROD_PHASE5_BLIZZARD_603E_PLUS,
        .driver_data = (unsigned long)&zorro7xx_driver_data[0],
    },
    {
        .id = ZORRO_PROD_MACROSYSTEMS_WARP_ENGINE_40xx,
        .driver_data = (unsigned long)&zorro7xx_driver_data[1],
    },
    {
        .id = ZORRO_PROD_CBM_A4091_1,
        .driver_data = (unsigned long)&zorro7xx_driver_data[2],
    },
    {
        .id = ZORRO_PROD_CBM_A4091_2,
        .driver_data = (unsigned long)&zorro7xx_driver_data[2],
    },
    {
        .id = ZORRO_PROD_GVP_GFORCE_040_060,
        .driver_data = (unsigned long)&zorro7xx_driver_data[3],
    },
    { 0 }
};
MODULE_DEVICE_TABLE(zorro, zorro7xx_zorro_tbl);

static int __devinit zorro7xx_init_one(struct zorro_dev *z,
                       const struct zorro_device_id *ent)
{
    struct Scsi_Host *host;
    struct NCR_700_Host_Parameters *hostdata;
    struct zorro_driver_data *zdd;
    unsigned long board, ioaddr;

    board = zorro_resource_start(z);
    zdd = (struct zorro_driver_data *)ent->driver_data;

    if (zdd->absolute) {
        ioaddr = zdd->offset;
    } else {
        ioaddr = board + zdd->offset;
    }

    if (!zorro_request_device(z, zdd->name)) {
        printk(KERN_ERR "zorro7xx: cannot reserve region 0x%lx, abort\n",
               board);
        return -EBUSY;
    }

    hostdata = kzalloc(sizeof(struct NCR_700_Host_Parameters), GFP_KERNEL);
    if (!hostdata) {
        printk(KERN_ERR "zorro7xx: Failed to allocate host data\n");
        goto out_release;
    }

    /* Fill in the required pieces of hostdata */
    if (ioaddr > 0x01000000)
        hostdata->base = ioremap(ioaddr, zorro_resource_len(z));
    else
        hostdata->base = (void __iomem *)ZTWO_VADDR(ioaddr);

    hostdata->clock = 50;
    hostdata->chip710 = 1;

    /* Settings for at least WarpEngine 40xx */
    hostdata->ctest7_extra = CTEST7_TT1;

    zorro7xx_scsi_driver_template.name = zdd->name;

    /* and register the chip */
    host = NCR_700_detect(&zorro7xx_scsi_driver_template, hostdata,
                  &z->dev);
    if (!host) {
        printk(KERN_ERR "zorro7xx: No host detected; "
                "board configuration problem?\n");
        goto out_free;
    }

    host->this_id = 7;
    host->base = ioaddr;
    host->irq = IRQ_AMIGA_PORTS;

    if (request_irq(host->irq, NCR_700_intr, IRQF_SHARED, "zorro7xx-scsi",
            host)) {
        printk(KERN_ERR "zorro7xx: request_irq failed\n");
        goto out_put_host;
    }

    zorro_set_drvdata(z, host);
    scsi_scan_host(host);

    return 0;

 out_put_host:
    scsi_host_put(host);
 out_free:
    if (ioaddr > 0x01000000)
        iounmap(hostdata->base);
    kfree(hostdata);
 out_release:
    zorro_release_device(z);

    return -ENODEV;
}

static __devexit void zorro7xx_remove_one(struct zorro_dev *z)
{
    struct Scsi_Host *host = zorro_get_drvdata(z);
    struct NCR_700_Host_Parameters *hostdata = shost_priv(host);

    scsi_remove_host(host);

    NCR_700_release(host);
    kfree(hostdata);
    free_irq(host->irq, host);
    zorro_release_device(z);
}

static struct zorro_driver zorro7xx_driver = {
    .name     = "zorro7xx-scsi",
    .id_table = zorro7xx_zorro_tbl,
    .probe    = zorro7xx_init_one,
    .remove   = __devexit_p(zorro7xx_remove_one),
};

static int __init zorro7xx_scsi_init(void)
{
    return zorro_register_driver(&zorro7xx_driver);
}

static void __exit zorro7xx_scsi_exit(void)
{
    zorro_unregister_driver(&zorro7xx_driver);
}

module_init(zorro7xx_scsi_init);
module_exit(zorro7xx_scsi_exit);