linux/drivers/scsi/zorro7xx.c
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   1/*
   2 * Detection routine for the NCR53c710 based Amiga SCSI Controllers for Linux.
   3 *              Amiga MacroSystemUS WarpEngine SCSI controller.
   4 *              Amiga Technologies/DKB A4091 SCSI controller.
   5 *
   6 * Written 1997 by Alan Hourihane <alanh@fairlite.demon.co.uk>
   7 * plus modifications of the 53c7xx.c driver to support the Amiga.
   8 *
   9 * Rewritten to use 53c700.c by Kars de Jong <jongk@linux-m68k.org>
  10 */
  11
  12#include <linux/module.h>
  13#include <linux/init.h>
  14#include <linux/interrupt.h>
  15#include <linux/zorro.h>
  16
  17#include <asm/amigahw.h>
  18#include <asm/amigaints.h>
  19
  20#include <scsi/scsi_host.h>
  21#include <scsi/scsi_transport_spi.h>
  22
  23#include "53c700.h"
  24
  25MODULE_AUTHOR("Alan Hourihane <alanh@fairlite.demon.co.uk> / Kars de Jong <jongk@linux-m68k.org>");
  26MODULE_DESCRIPTION("Amiga Zorro NCR53C710 driver");
  27MODULE_LICENSE("GPL");
  28
  29
  30static struct scsi_host_template zorro7xx_scsi_driver_template = {
  31        .proc_name      = "zorro7xx",
  32        .this_id        = 7,
  33        .module         = THIS_MODULE,
  34};
  35
  36static struct zorro_driver_data {
  37        const char *name;
  38        unsigned long offset;
  39        int absolute;   /* offset is absolute address */
  40} zorro7xx_driver_data[] __devinitdata = {
  41        { .name = "PowerUP 603e+", .offset = 0xf40000, .absolute = 1 },
  42        { .name = "WarpEngine 40xx", .offset = 0x40000 },
  43        { .name = "A4091", .offset = 0x800000 },
  44        { .name = "GForce 040/060", .offset = 0x40000 },
  45        { 0 }
  46};
  47
  48static struct zorro_device_id zorro7xx_zorro_tbl[] __devinitdata = {
  49        {
  50                .id = ZORRO_PROD_PHASE5_BLIZZARD_603E_PLUS,
  51                .driver_data = (unsigned long)&zorro7xx_driver_data[0],
  52        },
  53        {
  54                .id = ZORRO_PROD_MACROSYSTEMS_WARP_ENGINE_40xx,
  55                .driver_data = (unsigned long)&zorro7xx_driver_data[1],
  56        },
  57        {
  58                .id = ZORRO_PROD_CBM_A4091_1,
  59                .driver_data = (unsigned long)&zorro7xx_driver_data[2],
  60        },
  61        {
  62                .id = ZORRO_PROD_CBM_A4091_2,
  63                .driver_data = (unsigned long)&zorro7xx_driver_data[2],
  64        },
  65        {
  66                .id = ZORRO_PROD_GVP_GFORCE_040_060,
  67                .driver_data = (unsigned long)&zorro7xx_driver_data[3],
  68        },
  69        { 0 }
  70};
  71
  72static int __devinit zorro7xx_init_one(struct zorro_dev *z,
  73                                       const struct zorro_device_id *ent)
  74{
  75        struct Scsi_Host *host;
  76        struct NCR_700_Host_Parameters *hostdata;
  77        struct zorro_driver_data *zdd;
  78        unsigned long board, ioaddr;
  79
  80        board = zorro_resource_start(z);
  81        zdd = (struct zorro_driver_data *)ent->driver_data;
  82
  83        if (zdd->absolute) {
  84                ioaddr = zdd->offset;
  85        } else {
  86                ioaddr = board + zdd->offset;
  87        }
  88
  89        if (!zorro_request_device(z, zdd->name)) {
  90                printk(KERN_ERR "zorro7xx: cannot reserve region 0x%lx, abort\n",
  91                       board);
  92                return -EBUSY;
  93        }
  94
  95        hostdata = kzalloc(sizeof(struct NCR_700_Host_Parameters), GFP_KERNEL);
  96        if (!hostdata) {
  97                printk(KERN_ERR "zorro7xx: Failed to allocate host data\n");
  98                goto out_release;
  99        }
 100
 101        /* Fill in the required pieces of hostdata */
 102        if (ioaddr > 0x01000000)
 103                hostdata->base = ioremap(ioaddr, zorro_resource_len(z));
 104        else
 105                hostdata->base = (void __iomem *)ZTWO_VADDR(ioaddr);
 106
 107        hostdata->clock = 50;
 108        hostdata->chip710 = 1;
 109
 110        /* Settings for at least WarpEngine 40xx */
 111        hostdata->ctest7_extra = CTEST7_TT1;
 112
 113        zorro7xx_scsi_driver_template.name = zdd->name;
 114
 115        /* and register the chip */
 116        host = NCR_700_detect(&zorro7xx_scsi_driver_template, hostdata,
 117                              &z->dev);
 118        if (!host) {
 119                printk(KERN_ERR "zorro7xx: No host detected; "
 120                                "board configuration problem?\n");
 121                goto out_free;
 122        }
 123
 124        host->this_id = 7;
 125        host->base = ioaddr;
 126        host->irq = IRQ_AMIGA_PORTS;
 127
 128        if (request_irq(host->irq, NCR_700_intr, IRQF_SHARED, "zorro7xx-scsi",
 129                        host)) {
 130                printk(KERN_ERR "zorro7xx: request_irq failed\n");
 131                goto out_put_host;
 132        }
 133
 134        zorro_set_drvdata(z, host);
 135        scsi_scan_host(host);
 136
 137        return 0;
 138
 139 out_put_host:
 140        scsi_host_put(host);
 141 out_free:
 142        if (ioaddr > 0x01000000)
 143                iounmap(hostdata->base);
 144        kfree(hostdata);
 145 out_release:
 146        zorro_release_device(z);
 147
 148        return -ENODEV;
 149}
 150
 151static __devexit void zorro7xx_remove_one(struct zorro_dev *z)
 152{
 153        struct Scsi_Host *host = zorro_get_drvdata(z);
 154        struct NCR_700_Host_Parameters *hostdata = shost_priv(host);
 155
 156        scsi_remove_host(host);
 157
 158        NCR_700_release(host);
 159        kfree(hostdata);
 160        free_irq(host->irq, host);
 161        zorro_release_device(z);
 162}
 163
 164static struct zorro_driver zorro7xx_driver = {
 165        .name     = "zorro7xx-scsi",
 166        .id_table = zorro7xx_zorro_tbl,
 167        .probe    = zorro7xx_init_one,
 168        .remove   = __devexit_p(zorro7xx_remove_one),
 169};
 170
 171static int __init zorro7xx_scsi_init(void)
 172{
 173        return zorro_register_driver(&zorro7xx_driver);
 174}
 175
 176static void __exit zorro7xx_scsi_exit(void)
 177{
 178        zorro_unregister_driver(&zorro7xx_driver);
 179}
 180
 181module_init(zorro7xx_scsi_init);
 182module_exit(zorro7xx_scsi_exit);
 183