drivers/scsi/zorro7xx.c

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