drivers/scsi/aic7xxx/aic7770_osm.c

   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
  47 int
  48 aic7770_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
  60 int
  61 aic7770_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
  77 static int
  78 aic7770_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 = kmalloc(strlen(buf) + 1, GFP_ATOMIC);
  89         if (name == NULL)
  90                 return (ENOMEM);
  91         strcpy(name, buf);
  92         ahc = ahc_alloc(&aic7xxx_driver_template, name);
  93         if (ahc == NULL)
  94                 return (ENOMEM);
  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
 109 static int
 110 aic7770_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
 126 static 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 };
 135 MODULE_DEVICE_TABLE(eisa, aic7770_ids);
 136
 137 static 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
 146 int
 147 ahc_linux_eisa_init(void)
 148 {
 149         return eisa_driver_register(&aic7770_driver);
 150 }
 151
 152 void
 153 ahc_linux_eisa_exit(void)
 154 {
 155         eisa_driver_unregister(&aic7770_driver);
 156 }