linux/drivers/scsi/zorro7xx.c
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   1// SPDX-License-Identifier: GPL-2.0-only
   2/*
   3 * Detection routine for the NCR53c710 based Amiga SCSI Controllers for Linux.
   4 *              Amiga MacroSystemUS WarpEngine SCSI controller.
   5 *              Amiga Technologies/DKB A4091 SCSI controller.
   6 *
   7 * Written 1997 by Alan Hourihane <alanh@fairlite.demon.co.uk>
   8 * plus modifications of the 53c7xx.c driver to support the Amiga.
   9 *
  10 * Rewritten to use 53c700.c by Kars de Jong <jongk@linux-m68k.org>
  11 */
  12
  13#include <linux/module.h>
  14#include <linux/init.h>
  15#include <linux/interrupt.h>
  16#include <linux/zorro.h>
  17#include <linux/slab.h>
  18
  19#include <asm/amigahw.h>
  20#include <asm/amigaints.h>
  21
  22#include <scsi/scsi_host.h>
  23#include <scsi/scsi_transport_spi.h>
  24
  25#include "53c700.h"
  26
  27MODULE_AUTHOR("Alan Hourihane <alanh@fairlite.demon.co.uk> / Kars de Jong <jongk@linux-m68k.org>");
  28MODULE_DESCRIPTION("Amiga Zorro NCR53C710 driver");
  29MODULE_LICENSE("GPL");
  30
  31
  32static struct scsi_host_template zorro7xx_scsi_driver_template = {
  33        .proc_name      = "zorro7xx",
  34        .this_id        = 7,
  35        .module         = THIS_MODULE,
  36};
  37
  38static struct zorro_driver_data {
  39        const char *name;
  40        unsigned long offset;
  41        int absolute;   /* offset is absolute address */
  42} zorro7xx_driver_data[] = {
  43        { .name = "PowerUP 603e+", .offset = 0xf40000, .absolute = 1 },
  44        { .name = "WarpEngine 40xx", .offset = 0x40000 },
  45        { .name = "A4091", .offset = 0x800000 },
  46        { .name = "GForce 040/060", .offset = 0x40000 },
  47        { 0 }
  48};
  49
  50static struct zorro_device_id zorro7xx_zorro_tbl[] = {
  51        {
  52                .id = ZORRO_PROD_PHASE5_BLIZZARD_603E_PLUS,
  53                .driver_data = (unsigned long)&zorro7xx_driver_data[0],
  54        },
  55        {
  56                .id = ZORRO_PROD_MACROSYSTEMS_WARP_ENGINE_40xx,
  57                .driver_data = (unsigned long)&zorro7xx_driver_data[1],
  58        },
  59        {
  60                .id = ZORRO_PROD_CBM_A4091_1,
  61                .driver_data = (unsigned long)&zorro7xx_driver_data[2],
  62        },
  63        {
  64                .id = ZORRO_PROD_CBM_A4091_2,
  65                .driver_data = (unsigned long)&zorro7xx_driver_data[2],
  66        },
  67        {
  68                .id = ZORRO_PROD_GVP_GFORCE_040_060,
  69                .driver_data = (unsigned long)&zorro7xx_driver_data[3],
  70        },
  71        { 0 }
  72};
  73MODULE_DEVICE_TABLE(zorro, zorro7xx_zorro_tbl);
  74
  75static int zorro7xx_init_one(struct zorro_dev *z,
  76                             const struct zorro_device_id *ent)
  77{
  78        struct Scsi_Host *host;
  79        struct NCR_700_Host_Parameters *hostdata;
  80        struct zorro_driver_data *zdd;
  81        unsigned long board, ioaddr;
  82
  83        board = zorro_resource_start(z);
  84        zdd = (struct zorro_driver_data *)ent->driver_data;
  85
  86        if (zdd->absolute) {
  87                ioaddr = zdd->offset;
  88        } else {
  89                ioaddr = board + zdd->offset;
  90        }
  91
  92        if (!zorro_request_device(z, zdd->name)) {
  93                printk(KERN_ERR "zorro7xx: cannot reserve region 0x%lx, abort\n",
  94                       board);
  95                return -EBUSY;
  96        }
  97
  98        hostdata = kzalloc(sizeof(struct NCR_700_Host_Parameters), GFP_KERNEL);
  99        if (!hostdata) {
 100                printk(KERN_ERR "zorro7xx: Failed to allocate host data\n");
 101                goto out_release;
 102        }
 103
 104        /* Fill in the required pieces of hostdata */
 105        if (ioaddr > 0x01000000)
 106                hostdata->base = ioremap(ioaddr, zorro_resource_len(z));
 107        else
 108                hostdata->base = ZTWO_VADDR(ioaddr);
 109
 110        hostdata->clock = 50;
 111        hostdata->chip710 = 1;
 112
 113        /* Settings for at least WarpEngine 40xx */
 114        hostdata->ctest7_extra = CTEST7_TT1;
 115
 116        zorro7xx_scsi_driver_template.name = zdd->name;
 117
 118        /* and register the chip */
 119        host = NCR_700_detect(&zorro7xx_scsi_driver_template, hostdata,
 120                              &z->dev);
 121        if (!host) {
 122                printk(KERN_ERR "zorro7xx: No host detected; "
 123                                "board configuration problem?\n");
 124                goto out_free;
 125        }
 126
 127        host->this_id = 7;
 128        host->base = ioaddr;
 129        host->irq = IRQ_AMIGA_PORTS;
 130
 131        if (request_irq(host->irq, NCR_700_intr, IRQF_SHARED, "zorro7xx-scsi",
 132                        host)) {
 133                printk(KERN_ERR "zorro7xx: request_irq failed\n");
 134                goto out_put_host;
 135        }
 136
 137        zorro_set_drvdata(z, host);
 138        scsi_scan_host(host);
 139
 140        return 0;
 141
 142 out_put_host:
 143        scsi_host_put(host);
 144 out_free:
 145        if (ioaddr > 0x01000000)
 146                iounmap(hostdata->base);
 147        kfree(hostdata);
 148 out_release:
 149        zorro_release_device(z);
 150
 151        return -ENODEV;
 152}
 153
 154static void zorro7xx_remove_one(struct zorro_dev *z)
 155{
 156        struct Scsi_Host *host = zorro_get_drvdata(z);
 157        struct NCR_700_Host_Parameters *hostdata = shost_priv(host);
 158
 159        scsi_remove_host(host);
 160
 161        NCR_700_release(host);
 162        kfree(hostdata);
 163        free_irq(host->irq, host);
 164        zorro_release_device(z);
 165}
 166
 167static struct zorro_driver zorro7xx_driver = {
 168        .name     = "zorro7xx-scsi",
 169        .id_table = zorro7xx_zorro_tbl,
 170        .probe    = zorro7xx_init_one,
 171        .remove   = zorro7xx_remove_one,
 172};
 173
 174static int __init zorro7xx_scsi_init(void)
 175{
 176        return zorro_register_driver(&zorro7xx_driver);
 177}
 178
 179static void __exit zorro7xx_scsi_exit(void)
 180{
 181        zorro_unregister_driver(&zorro7xx_driver);
 182}
 183
 184module_init(zorro7xx_scsi_init);
 185module_exit(zorro7xx_scsi_exit);
 186