LXR linux/drivers/scsi/aic7xxx/aic7770

   1/*
   2 * Linux driver attachment glue for aic7770 based controllers.
   3 *
   4 * Copyright (c) 2000-2003 Adaptec Inc.
   5 * All rights reserved.
   6 *
   7 * Redistribution and use in source and binary forms, with or without
   8 * modification, are permitted provided that the following conditions
   9 * are met:
  10 * 1. Redistributions of source code must retain the above copyright
  11 *    notice, this list of conditions, and the following disclaimer,
  12 *    without modification.
  13 * 2. Redistributions in binary form must reproduce at minimum a disclaimer
  14 *    substantially similar to the "NO WARRANTY" disclaimer below
  15 *    ("Disclaimer") and any redistribution must be conditioned upon
  16 *    including a substantially similar Disclaimer requirement for further
  17 *    binary redistribution.
  18 * 3. Neither the names of the above-listed copyright holders nor the names
  19 *    of any contributors may be used to endorse or promote products derived
  20 *    from this software without specific prior written permission.
  21 *
  22 * Alternatively, this software may be distributed under the terms of the
  23 * GNU General Public License ("GPL") version 2 as published by the Free
  24 * Software Foundation.
  25 *
  26 * NO WARRANTY
  27 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
  28 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
  29 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR
  30 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
  31 * HOLDERS OR CONTRIBUTORS BE LIABLE FOR SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  32 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  33 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  34 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
  35 * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING
  36 * IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
  37 * POSSIBILITY OF SUCH DAMAGES.
  38 *
  39 * $Id: //depot/aic7xxx/linux/drivers/scsi/aic7xxx/aic7770_osm.c#14 $
  40 */
  41
  42#include "aic7xxx_osm.h"
  43
  44#include <linux/device.h>
  45#include <linux/eisa.h>
  46
  47int
  48aic7770_map_registers(struct ahc_softc *ahc, u_int port)
  49{
  50        /*
  51         * Lock out other contenders for our i/o space.
  52         */
  53        if (!request_region(port, AHC_EISA_IOSIZE, "aic7xxx"))
  54                return (ENOMEM);
  55        ahc->tag = BUS_SPACE_PIO;
  56        ahc->bsh.ioport = port;
  57        return (0);
  58}
  59
  60int
  61aic7770_map_int(struct ahc_softc *ahc, u_int irq)
  62{
  63        int error;
  64        int shared;
  65
  66        shared = 0;
  67        if ((ahc->flags & AHC_EDGE_INTERRUPT) == 0)
  68                shared = IRQF_SHARED;
  69
  70        error = request_irq(irq, ahc_linux_isr, shared, "aic7xxx", ahc);
  71        if (error == 0)
  72                ahc->platform_data->irq = irq;
  73        
  74        return (-error);
  75}
  76
  77static int
  78aic7770_probe(struct device *dev)
  79{
  80        struct eisa_device *edev = to_eisa_device(dev);
  81        u_int eisaBase = edev->base_addr+AHC_EISA_SLOT_OFFSET;
  82        struct  ahc_softc *ahc;
  83        char    buf[80];
  84        char   *name;
  85        int     error;
  86
  87        sprintf(buf, "ahc_eisa:%d", eisaBase >> 12);
  88        name = kstrdup(buf, GFP_ATOMIC);
  89        if (name == NULL)
  90                return (ENOMEM);
  91        ahc = ahc_alloc(&aic7xxx_driver_template, name);
  92        if (ahc == NULL)
  93                return (ENOMEM);
  94        ahc->dev = dev;
  95        error = aic7770_config(ahc, aic7770_ident_table + edev->id.driver_data,
  96                               eisaBase);
  97        if (error != 0) {
  98                ahc->bsh.ioport = 0;
  99                ahc_free(ahc);
 100                return (error);
 101        }
 102
 103        dev_set_drvdata(dev, ahc);
 104
 105        error = ahc_linux_register_host(ahc, &aic7xxx_driver_template);
 106        return (error);
 107}
 108
 109static int
 110aic7770_remove(struct device *dev)
 111{
 112        struct ahc_softc *ahc = dev_get_drvdata(dev);
 113        u_long s;
 114
 115        if (ahc->platform_data && ahc->platform_data->host)
 116                        scsi_remove_host(ahc->platform_data->host);
 117
 118        ahc_lock(ahc, &s);
 119        ahc_intr_enable(ahc, FALSE);
 120        ahc_unlock(ahc, &s);
 121
 122        ahc_free(ahc);
 123        return 0;
 124}
 125 
 126static struct eisa_device_id aic7770_ids[] = {
 127        { "ADP7771", 0 }, /* AHA 274x */
 128        { "ADP7756", 1 }, /* AHA 284x BIOS enabled */
 129        { "ADP7757", 2 }, /* AHA 284x BIOS disabled */
 130        { "ADP7782", 3 }, /* AHA 274x Olivetti OEM */
 131        { "ADP7783", 4 }, /* AHA 274x Olivetti OEM (Differential) */
 132        { "ADP7770", 5 }, /* AIC7770 generic */
 133        { "" }
 134};
 135MODULE_DEVICE_TABLE(eisa, aic7770_ids);
 136
 137static struct eisa_driver aic7770_driver = {
 138        .id_table       = aic7770_ids,
 139        .driver = {
 140                .name   = "aic7xxx",
 141                .probe  = aic7770_probe,
 142                .remove = aic7770_remove,
 143        }
 144};
 145  
 146int
 147ahc_linux_eisa_init(void)
 148{
 149        return eisa_driver_register(&aic7770_driver);
 150}
 151  
 152void
 153ahc_linux_eisa_exit(void)
 154{
 155        eisa_driver_unregister(&aic7770_driver);
 156}
 157