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