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Linux/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);
185 

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