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/cistpl.h>
  50 #include <pcmcia/ds.h>
  51
  52 /*====================================================================*/
  53
  54 /* Module parameters */
  55
  56 MODULE_AUTHOR("David Hinds <dahinds@users.sourceforge.net>");
  57 MODULE_DESCRIPTION("Future Domain PCMCIA SCSI driver");
  58 MODULE_LICENSE("Dual MPL/GPL");
  59
  60 /*====================================================================*/
  61
  62 typedef struct scsi_info_t {
  63         struct pcmcia_device    *p_dev;
  64     struct Scsi_Host    *host;
  65 } scsi_info_t;
  66
  67
  68 static void fdomain_release(struct pcmcia_device *link);
  69 static void fdomain_detach(struct pcmcia_device *p_dev);
  70 static int fdomain_config(struct pcmcia_device *link);
  71
  72 static int fdomain_probe(struct pcmcia_device *link)
  73 {
  74         scsi_info_t *info;
  75
  76         dev_dbg(&link->dev, "fdomain_attach()\n");
  77
  78         /* Create new SCSI device */
  79         info = kzalloc(sizeof(*info), GFP_KERNEL);
  80         if (!info)
  81                 return -ENOMEM;
  82
  83         info->p_dev = link;
  84         link->priv = info;
  85         link->resource[0]->end = 0x10;
  86         link->resource[0]->flags |= IO_DATA_PATH_WIDTH_AUTO;
  87         link->config_flags |= CONF_ENABLE_IRQ;
  88         link->config_regs = PRESENT_OPTION;
  89
  90         return fdomain_config(link);
  91 } /* fdomain_attach */
  92
  93 /*====================================================================*/
  94
  95 static void fdomain_detach(struct pcmcia_device *link)
  96 {
  97         dev_dbg(&link->dev, "fdomain_detach\n");
  98
  99         fdomain_release(link);
 100
 101         kfree(link->priv);
 102 } /* fdomain_detach */
 103
 104 /*====================================================================*/
 105
 106 static int fdomain_config_check(struct pcmcia_device *p_dev,
 107                                 cistpl_cftable_entry_t *cfg,
 108                                 cistpl_cftable_entry_t *dflt,
 109                                 void *priv_data)
 110 {
 111         p_dev->io_lines = 10;
 112         p_dev->resource[0]->start = cfg->io.win[0].base;
 113         return pcmcia_request_io(p_dev);
 114 }
 115
 116
 117 static int fdomain_config(struct pcmcia_device *link)
 118 {
 119     scsi_info_t *info = link->priv;
 120     int ret;
 121     char str[22];
 122     struct Scsi_Host *host;
 123
 124     dev_dbg(&link->dev, "fdomain_config\n");
 125
 126     ret = pcmcia_loop_config(link, fdomain_config_check, NULL);
 127     if (ret)
 128             goto failed;
 129
 130     if (!link->irq)
 131             goto failed;
 132     ret = pcmcia_enable_device(link);
 133     if (ret)
 134             goto failed;
 135
 136     /* A bad hack... */
 137     release_region(link->resource[0]->start, resource_size(link->resource[0]));
 138
 139     /* Set configuration options for the fdomain driver */
 140     sprintf(str, "%d,%d", (unsigned int) link->resource[0]->start, link->irq);
 141     fdomain_setup(str);
 142
 143     host = __fdomain_16x0_detect(&fdomain_driver_template);
 144     if (!host) {
 145         printk(KERN_INFO "fdomain_cs: no SCSI devices found\n");
 146         goto failed;
 147     }
 148
 149     if (scsi_add_host(host, NULL))
 150             goto failed;
 151     scsi_scan_host(host);
 152
 153     info->host = host;
 154
 155     return 0;
 156
 157 failed:
 158     fdomain_release(link);
 159     return -ENODEV;
 160 } /* fdomain_config */
 161
 162 /*====================================================================*/
 163
 164 static void fdomain_release(struct pcmcia_device *link)
 165 {
 166         scsi_info_t *info = link->priv;
 167
 168         dev_dbg(&link->dev, "fdomain_release\n");
 169
 170         scsi_remove_host(info->host);
 171         pcmcia_disable_device(link);
 172         scsi_unregister(info->host);
 173 }
 174
 175 /*====================================================================*/
 176
 177 static int fdomain_resume(struct pcmcia_device *link)
 178 {
 179         fdomain_16x0_bus_reset(NULL);
 180
 181         return 0;
 182 }
 183
 184 static struct pcmcia_device_id fdomain_ids[] = {
 185         PCMCIA_DEVICE_PROD_ID12("IBM Corp.", "SCSI PCMCIA Card", 0xe3736c88, 0x859cad20),
 186         PCMCIA_DEVICE_PROD_ID1("SCSI PCMCIA Adapter Card", 0x8dacb57e),
 187         PCMCIA_DEVICE_PROD_ID12(" SIMPLE TECHNOLOGY Corporation", "SCSI PCMCIA Credit Card Controller", 0x182bdafe, 0xc80d106f),
 188         PCMCIA_DEVICE_NULL,
 189 };
 190 MODULE_DEVICE_TABLE(pcmcia, fdomain_ids);
 191
 192 static struct pcmcia_driver fdomain_cs_driver = {
 193         .owner          = THIS_MODULE,
 194         .drv            = {
 195                 .name   = "fdomain_cs",
 196         },
 197         .probe          = fdomain_probe,
 198         .remove         = fdomain_detach,
 199         .id_table       = fdomain_ids,
 200         .resume         = fdomain_resume,
 201 };
 202
 203 static int __init init_fdomain_cs(void)
 204 {
 205         return pcmcia_register_driver(&fdomain_cs_driver);
 206 }
 207
 208 static void __exit exit_fdomain_cs(void)
 209 {
 210         pcmcia_unregister_driver(&fdomain_cs_driver);
 211 }
 212
 213 module_init(init_fdomain_cs);
 214 module_exit(exit_fdomain_cs);