release/src-rt-6.x.4708/linux/linux-2.6.36/drivers/scsi/pcmcia/fdomain_stub.c

   1 /*======================================================================
   2
   3     A driver for Future Domain-compatible PCMCIA SCSI cards
   4
   5     fdomain_cs.c 1.47 2001/10/13 00:08:52
   6
   7     The contents of this file are subject to the Mozilla Public
   8     License Version 1.1 (the "License"); you may not use this file
   9     except in compliance with the License. You may obtain a copy of
  10     the License at http://www.mozilla.org/MPL/
  11
  12     Software distributed under the License is distributed on an "AS
  13     IS" basis, WITHOUT WARRANTY OF ANY KIND, either express or
  14     implied. See the License for the specific language governing
  15     rights and limitations under the License.
  16
  17     The initial developer of the original code is David A. Hinds
  18     <dahinds@users.sourceforge.net>.  Portions created by David A. Hinds
  19     are Copyright (C) 1999 David A. Hinds.  All Rights Reserved.
  20
  21     Alternatively, the contents of this file may be used under the
  22     terms of the GNU General Public License version 2 (the "GPL"), in
  23     which case the provisions of the GPL are applicable instead of the
  24     above.  If you wish to allow the use of your version of this file
  25     only under the terms of the GPL and not to allow others to use
  26     your version of this file under the MPL, indicate your decision
  27     by deleting the provisions above and replace them with the notice
  28     and other provisions required by the GPL.  If you do not delete
  29     the provisions above, a recipient may use your version of this
  30     file under either the MPL or the GPL.
  31
  32 ======================================================================*/
  33
  34 #include <linux/module.h>
  35 #include <linux/init.h>
  36 #include <linux/kernel.h>
  37 #include <linux/slab.h>
  38 #include <linux/string.h>
  39 #include <linux/ioport.h>
  40 #include <scsi/scsi.h>
  41 #include <linux/major.h>
  42 #include <linux/blkdev.h>
  43 #include <scsi/scsi_ioctl.h>
  44
  45 #include "scsi.h"
  46 #include <scsi/scsi_host.h>
  47 #include "fdomain.h"
  48
  49 #include <pcmcia/cs.h>
  50 #include <pcmcia/cistpl.h>
  51 #include <pcmcia/ds.h>
  52
  53 /*====================================================================*/
  54
  55 /* Module parameters */
  56
  57 MODULE_AUTHOR("David Hinds <dahinds@users.sourceforge.net>");
  58 MODULE_DESCRIPTION("Future Domain PCMCIA SCSI driver");
  59 MODULE_LICENSE("Dual MPL/GPL");
  60
  61 /*====================================================================*/
  62
  63 typedef struct scsi_info_t {
  64         struct pcmcia_device    *p_dev;
  65     struct Scsi_Host    *host;
  66 } scsi_info_t;
  67
  68
  69 static void fdomain_release(struct pcmcia_device *link);
  70 static void fdomain_detach(struct pcmcia_device *p_dev);
  71 static int fdomain_config(struct pcmcia_device *link);
  72
  73 static int fdomain_probe(struct pcmcia_device *link)
  74 {
  75         scsi_info_t *info;
  76
  77         dev_dbg(&link->dev, "fdomain_attach()\n");
  78
  79         /* Create new SCSI device */
  80         info = kzalloc(sizeof(*info), GFP_KERNEL);
  81         if (!info)
  82                 return -ENOMEM;
  83
  84         info->p_dev = link;
  85         link->priv = info;
  86         link->resource[0]->end = 0x10;
  87         link->resource[0]->flags |= IO_DATA_PATH_WIDTH_AUTO;
  88         link->conf.Attributes = CONF_ENABLE_IRQ;
  89         link->conf.IntType = INT_MEMORY_AND_IO;
  90         link->conf.Present = PRESENT_OPTION;
  91
  92         return fdomain_config(link);
  93 } /* fdomain_attach */
  94
  95 /*====================================================================*/
  96
  97 static void fdomain_detach(struct pcmcia_device *link)
  98 {
  99         dev_dbg(&link->dev, "fdomain_detach\n");
 100
 101         fdomain_release(link);
 102
 103         kfree(link->priv);
 104 } /* fdomain_detach */
 105
 106 /*====================================================================*/
 107
 108 static int fdomain_config_check(struct pcmcia_device *p_dev,
 109                                 cistpl_cftable_entry_t *cfg,
 110                                 cistpl_cftable_entry_t *dflt,
 111                                 unsigned int vcc,
 112                                 void *priv_data)
 113 {
 114         p_dev->io_lines = 10;
 115         p_dev->resource[0]->start = cfg->io.win[0].base;
 116         return pcmcia_request_io(p_dev);
 117 }
 118
 119
 120 static int fdomain_config(struct pcmcia_device *link)
 121 {
 122     scsi_info_t *info = link->priv;
 123     int ret;
 124     char str[22];
 125     struct Scsi_Host *host;
 126
 127     dev_dbg(&link->dev, "fdomain_config\n");
 128
 129     ret = pcmcia_loop_config(link, fdomain_config_check, NULL);
 130     if (ret)
 131             goto failed;
 132
 133     if (!link->irq)
 134             goto failed;
 135     ret = pcmcia_request_configuration(link, &link->conf);
 136     if (ret)
 137             goto failed;
 138
 139     /* A bad hack... */
 140     release_region(link->resource[0]->start, resource_size(link->resource[0]));
 141
 142     /* Set configuration options for the fdomain driver */
 143     sprintf(str, "%d,%d", (unsigned int) link->resource[0]->start, link->irq);
 144     fdomain_setup(str);
 145
 146     host = __fdomain_16x0_detect(&fdomain_driver_template);
 147     if (!host) {
 148         printk(KERN_INFO "fdomain_cs: no SCSI devices found\n");
 149         goto failed;
 150     }
 151
 152     if (scsi_add_host(host, NULL))
 153             goto failed;
 154     scsi_scan_host(host);
 155
 156     info->host = host;
 157
 158     return 0;
 159
 160 failed:
 161     fdomain_release(link);
 162     return -ENODEV;
 163 } /* fdomain_config */
 164
 165 /*====================================================================*/
 166
 167 static void fdomain_release(struct pcmcia_device *link)
 168 {
 169         scsi_info_t *info = link->priv;
 170
 171         dev_dbg(&link->dev, "fdomain_release\n");
 172
 173         scsi_remove_host(info->host);
 174         pcmcia_disable_device(link);
 175         scsi_unregister(info->host);
 176 }
 177
 178 /*====================================================================*/
 179
 180 static int fdomain_resume(struct pcmcia_device *link)
 181 {
 182         fdomain_16x0_bus_reset(NULL);
 183
 184         return 0;
 185 }
 186
 187 static struct pcmcia_device_id fdomain_ids[] = {
 188         PCMCIA_DEVICE_PROD_ID12("IBM Corp.", "SCSI PCMCIA Card", 0xe3736c88, 0x859cad20),
 189         PCMCIA_DEVICE_PROD_ID1("SCSI PCMCIA Adapter Card", 0x8dacb57e),
 190         PCMCIA_DEVICE_PROD_ID12(" SIMPLE TECHNOLOGY Corporation", "SCSI PCMCIA Credit Card Controller", 0x182bdafe, 0xc80d106f),
 191         PCMCIA_DEVICE_NULL,
 192 };
 193 MODULE_DEVICE_TABLE(pcmcia, fdomain_ids);
 194
 195 static struct pcmcia_driver fdomain_cs_driver = {
 196         .owner          = THIS_MODULE,
 197         .drv            = {
 198                 .name   = "fdomain_cs",
 199         },
 200         .probe          = fdomain_probe,
 201         .remove         = fdomain_detach,
 202         .id_table       = fdomain_ids,
 203         .resume         = fdomain_resume,
 204 };
 205
 206 static int __init init_fdomain_cs(void)
 207 {
 208         return pcmcia_register_driver(&fdomain_cs_driver);
 209 }
 210
 211 static void __exit exit_fdomain_cs(void)
 212 {
 213         pcmcia_unregister_driver(&fdomain_cs_driver);
 214 }
 215
 216 module_init(init_fdomain_cs);
 217 module_exit(exit_fdomain_cs);