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[] __devinitdata = {
  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[] __devinitdata = {
  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
  73 static int __devinit zorro7xx_init_one(struct zorro_dev *z,
  74                                        const struct zorro_device_id *ent)
  75 {
  76         struct Scsi_Host *host;
  77         struct NCR_700_Host_Parameters *hostdata;
  78         struct zorro_driver_data *zdd;
  79         unsigned long board, ioaddr;
  80
  81         board = zorro_resource_start(z);
  82         zdd = (struct zorro_driver_data *)ent->driver_data;
  83
  84         if (zdd->absolute) {
  85                 ioaddr = zdd->offset;
  86         } else {
  87                 ioaddr = board + zdd->offset;
  88         }
  89
  90         if (!zorro_request_device(z, zdd->name)) {
  91                 printk(KERN_ERR "zorro7xx: cannot reserve region 0x%lx, abort\n",
  92                        board);
  93                 return -EBUSY;
  94         }
  95
  96         hostdata = kzalloc(sizeof(struct NCR_700_Host_Parameters), GFP_KERNEL);
  97         if (!hostdata) {
  98                 printk(KERN_ERR "zorro7xx: Failed to allocate host data\n");
  99                 goto out_release;
 100         }
 101
 102         /* Fill in the required pieces of hostdata */
 103         if (ioaddr > 0x01000000)
 104                 hostdata->base = ioremap(ioaddr, zorro_resource_len(z));
 105         else
 106                 hostdata->base = (void __iomem *)ZTWO_VADDR(ioaddr);
 107
 108         hostdata->clock = 50;
 109         hostdata->chip710 = 1;
 110
 111         /* Settings for at least WarpEngine 40xx */
 112         hostdata->ctest7_extra = CTEST7_TT1;
 113
 114         zorro7xx_scsi_driver_template.name = zdd->name;
 115
 116         /* and register the chip */
 117         host = NCR_700_detect(&zorro7xx_scsi_driver_template, hostdata,
 118                               &z->dev);
 119         if (!host) {
 120                 printk(KERN_ERR "zorro7xx: No host detected; "
 121                                 "board configuration problem?\n");
 122                 goto out_free;
 123         }
 124
 125         host->this_id = 7;
 126         host->base = ioaddr;
 127         host->irq = IRQ_AMIGA_PORTS;
 128
 129         if (request_irq(host->irq, NCR_700_intr, IRQF_SHARED, "zorro7xx-scsi",
 130                         host)) {
 131                 printk(KERN_ERR "zorro7xx: request_irq failed\n");
 132                 goto out_put_host;
 133         }
 134
 135         zorro_set_drvdata(z, host);
 136         scsi_scan_host(host);
 137
 138         return 0;
 139
 140  out_put_host:
 141         scsi_host_put(host);
 142  out_free:
 143         if (ioaddr > 0x01000000)
 144                 iounmap(hostdata->base);
 145         kfree(hostdata);
 146  out_release:
 147         zorro_release_device(z);
 148
 149         return -ENODEV;
 150 }
 151
 152 static __devexit void zorro7xx_remove_one(struct zorro_dev *z)
 153 {
 154         struct Scsi_Host *host = zorro_get_drvdata(z);
 155         struct NCR_700_Host_Parameters *hostdata = shost_priv(host);
 156
 157         scsi_remove_host(host);
 158
 159         NCR_700_release(host);
 160         kfree(hostdata);
 161         free_irq(host->irq, host);
 162         zorro_release_device(z);
 163 }
 164
 165 static struct zorro_driver zorro7xx_driver = {
 166         .name     = "zorro7xx-scsi",
 167         .id_table = zorro7xx_zorro_tbl,
 168         .probe    = zorro7xx_init_one,
 169         .remove   = __devexit_p(zorro7xx_remove_one),
 170 };
 171
 172 static int __init zorro7xx_scsi_init(void)
 173 {
 174         return zorro_register_driver(&zorro7xx_driver);
 175 }
 176
 177 static void __exit zorro7xx_scsi_exit(void)
 178 {
 179         zorro_unregister_driver(&zorro7xx_driver);
 180 }
 181
 182 module_init(zorro7xx_scsi_init);
 183 module_exit(zorro7xx_scsi_exit);