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
56MODULE_AUTHOR("David Hinds <dahinds@users.sourceforge.net>");
57MODULE_DESCRIPTION("Future Domain PCMCIA SCSI driver");
58MODULE_LICENSE("Dual MPL/GPL");
59
60/*====================================================================*/
61
62typedef struct scsi_info_t {
63	struct pcmcia_device	*p_dev;
64    struct Scsi_Host	*host;
65} scsi_info_t;
66
67
68static void fdomain_release(struct pcmcia_device *link);
69static void fdomain_detach(struct pcmcia_device *p_dev);
70static int fdomain_config(struct pcmcia_device *link);
71
72static 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
93static 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
104static 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
114static 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
154failed:
155    fdomain_release(link);
156    return -ENODEV;
157} /* fdomain_config */
158
159/*====================================================================*/
160
161static 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
174static int fdomain_resume(struct pcmcia_device *link)
175{
176	fdomain_16x0_bus_reset(NULL);
177
178	return 0;
179}
180
181static 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};
187MODULE_DEVICE_TABLE(pcmcia, fdomain_ids);
188
189static 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
198static int __init init_fdomain_cs(void)
199{
200	return pcmcia_register_driver(&fdomain_cs_driver);
201}
202
203static void __exit exit_fdomain_cs(void)
204{
205	pcmcia_unregister_driver(&fdomain_cs_driver);
206}
207
208module_init(init_fdomain_cs);
209module_exit(exit_fdomain_cs);
210