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
  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
  25 MODULE_AUTHOR("Alan Hourihane <alanh@fairlite.demon.co.uk> / Kars de Jong <jongk@linux-m68k.org>");
  26 MODULE_DESCRIPTION("Amiga Zorro NCR53C710 driver");
  27 MODULE_LICENSE("GPL");
  28
  29
  30 static struct scsi_host_template zorro7xx_scsi_driver_template = {
  31         .proc_name      = "zorro7xx",
  32         .this_id        = 7,
  33         .module         = THIS_MODULE,
  34 };
  35
  36 static 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
  48 static 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
  72 static 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
 151 static __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
 164 static 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
 171 static int __init zorro7xx_scsi_init(void)
 172 {
 173         return zorro_register_driver(&zorro7xx_driver);
 174 }
 175
 176 static void __exit zorro7xx_scsi_exit(void)
 177 {
 178         zorro_unregister_driver(&zorro7xx_driver);
 179 }
 180
 181 module_init(zorro7xx_scsi_init);
 182 module_exit(zorro7xx_scsi_exit);