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
fdomain_probe(struct pcmcia_device * link)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
fdomain_detach(struct pcmcia_device * link)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
fdomain_config_check(struct pcmcia_device * p_dev,void * priv_data)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
fdomain_config(struct pcmcia_device * link)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
fdomain_release(struct pcmcia_device * link)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
fdomain_resume(struct pcmcia_device * link)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
init_fdomain_cs(void)198 static int __init init_fdomain_cs(void)
199 {
200 return pcmcia_register_driver(&fdomain_cs_driver);
201 }
202
exit_fdomain_cs(void)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