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Linux/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->config_flags |= CONF_ENABLE_IRQ | CONF_AUTO_SET_IO;
 86         link->config_regs = PRESENT_OPTION;
 87 
 88         return fdomain_config(link);
 89 } /* fdomain_attach */
 90 
 91 /*====================================================================*/
 92 
 93 static void fdomain_detach(struct pcmcia_device *link)
 94 {
 95         dev_dbg(&link->dev, "fdomain_detach\n");
 96 
 97         fdomain_release(link);
 98 
 99         kfree(link->priv);
100 } /* fdomain_detach */
101 
102 /*====================================================================*/
103 
104 static int fdomain_config_check(struct pcmcia_device *p_dev, void *priv_data)
105 {
106         p_dev->io_lines = 10;
107         p_dev->resource[0]->end = 0x10;
108         p_dev->resource[0]->flags &= ~IO_DATA_PATH_WIDTH;
109         p_dev->resource[0]->flags |= IO_DATA_PATH_WIDTH_AUTO;
110         return pcmcia_request_io(p_dev);
111 }
112 
113 
114 static int fdomain_config(struct pcmcia_device *link)
115 {
116     scsi_info_t *info = link->priv;
117     int ret;
118     char str[22];
119     struct Scsi_Host *host;
120 
121     dev_dbg(&link->dev, "fdomain_config\n");
122 
123     ret = pcmcia_loop_config(link, fdomain_config_check, NULL);
124     if (ret)
125             goto failed;
126 
127     if (!link->irq)
128             goto failed;
129     ret = pcmcia_enable_device(link);
130     if (ret)
131             goto failed;
132 
133     /* A bad hack... */
134     release_region(link->resource[0]->start, resource_size(link->resource[0]));
135 
136     /* Set configuration options for the fdomain driver */
137     sprintf(str, "%d,%d", (unsigned int) link->resource[0]->start, link->irq);
138     fdomain_setup(str);
139 
140     host = __fdomain_16x0_detect(&fdomain_driver_template);
141     if (!host) {
142         printk(KERN_INFO "fdomain_cs: no SCSI devices found\n");
143         goto failed;
144     }
145 
146     if (scsi_add_host(host, NULL))
147             goto failed;
148     scsi_scan_host(host);
149 
150     info->host = host;
151 
152     return 0;
153 
154 failed:
155     fdomain_release(link);
156     return -ENODEV;
157 } /* fdomain_config */
158 
159 /*====================================================================*/
160 
161 static void fdomain_release(struct pcmcia_device *link)
162 {
163         scsi_info_t *info = link->priv;
164 
165         dev_dbg(&link->dev, "fdomain_release\n");
166 
167         scsi_remove_host(info->host);
168         pcmcia_disable_device(link);
169         scsi_unregister(info->host);
170 }
171 
172 /*====================================================================*/
173 
174 static int fdomain_resume(struct pcmcia_device *link)
175 {
176         fdomain_16x0_bus_reset(NULL);
177 
178         return 0;
179 }
180 
181 static const struct pcmcia_device_id fdomain_ids[] = {
182         PCMCIA_DEVICE_PROD_ID12("IBM Corp.", "SCSI PCMCIA Card", 0xe3736c88, 0x859cad20),
183         PCMCIA_DEVICE_PROD_ID1("SCSI PCMCIA Adapter Card", 0x8dacb57e),
184         PCMCIA_DEVICE_PROD_ID12(" SIMPLE TECHNOLOGY Corporation", "SCSI PCMCIA Credit Card Controller", 0x182bdafe, 0xc80d106f),
185         PCMCIA_DEVICE_NULL,
186 };
187 MODULE_DEVICE_TABLE(pcmcia, fdomain_ids);
188 
189 static struct pcmcia_driver fdomain_cs_driver = {
190         .owner          = THIS_MODULE,
191         .name           = "fdomain_cs",
192         .probe          = fdomain_probe,
193         .remove         = fdomain_detach,
194         .id_table       = fdomain_ids,
195         .resume         = fdomain_resume,
196 };
197 
198 static int __init init_fdomain_cs(void)
199 {
200         return pcmcia_register_driver(&fdomain_cs_driver);
201 }
202 
203 static void __exit exit_fdomain_cs(void)
204 {
205         pcmcia_unregister_driver(&fdomain_cs_driver);
206 }
207 
208 module_init(init_fdomain_cs);
209 module_exit(exit_fdomain_cs);
210 

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