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Linux/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 = 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         error = aic7770_config(ahc, aic7770_ident_table + edev->id.driver_data,
 95                                eisaBase);
 96         if (error != 0) {
 97                 ahc->bsh.ioport = 0;
 98                 ahc_free(ahc);
 99                 return (error);
100         }
101 
102         dev_set_drvdata(dev, ahc);
103 
104         error = ahc_linux_register_host(ahc, &aic7xxx_driver_template);
105         return (error);
106 }
107 
108 static int
109 aic7770_remove(struct device *dev)
110 {
111         struct ahc_softc *ahc = dev_get_drvdata(dev);
112         u_long s;
113 
114         if (ahc->platform_data && ahc->platform_data->host)
115                         scsi_remove_host(ahc->platform_data->host);
116 
117         ahc_lock(ahc, &s);
118         ahc_intr_enable(ahc, FALSE);
119         ahc_unlock(ahc, &s);
120 
121         ahc_free(ahc);
122         return 0;
123 }
124  
125 static struct eisa_device_id aic7770_ids[] = {
126         { "ADP7771", 0 }, /* AHA 274x */
127         { "ADP7756", 1 }, /* AHA 284x BIOS enabled */
128         { "ADP7757", 2 }, /* AHA 284x BIOS disabled */
129         { "ADP7782", 3 }, /* AHA 274x Olivetti OEM */
130         { "ADP7783", 4 }, /* AHA 274x Olivetti OEM (Differential) */
131         { "ADP7770", 5 }, /* AIC7770 generic */
132         { "" }
133 };
134 MODULE_DEVICE_TABLE(eisa, aic7770_ids);
135 
136 static struct eisa_driver aic7770_driver = {
137         .id_table       = aic7770_ids,
138         .driver = {
139                 .name   = "aic7xxx",
140                 .probe  = aic7770_probe,
141                 .remove = aic7770_remove,
142         }
143 };
144   
145 int
146 ahc_linux_eisa_init(void)
147 {
148         return eisa_driver_register(&aic7770_driver);
149 }
150   
151 void
152 ahc_linux_eisa_exit(void)
153 {
154         eisa_driver_unregister(&aic7770_driver);
155 }
156 

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