1 /*======================================================================
3 An elsa_cs PCMCIA client driver
5 This driver is for the Elsa PCM ISDN Cards, i.e. the MicroLink
8 The contents of this file are subject to the Mozilla Public
9 License Version 1.1 (the "License"); you may not use this file
10 except in compliance with the License. You may obtain a copy of
11 the License at http://www.mozilla.org/MPL/
13 Software distributed under the License is distributed on an "AS
14 IS" basis, WITHOUT WARRANTY OF ANY KIND, either express or
15 implied. See the License for the specific language governing
16 rights and limitations under the License.
18 The initial developer of the original code is David A. Hinds
19 <dahinds@users.sourceforge.net>. Portions created by David A. Hinds
20 are Copyright (C) 1999 David A. Hinds. All Rights Reserved.
22 Modifications from dummy_cs.c are Copyright (C) 1999-2001 Klaus
23 Lichtenwalder <Lichtenwalder@ACM.org>. All Rights Reserved.
25 Alternatively, the contents of this file may be used under the
26 terms of the GNU General Public License version 2 (the "GPL"), in
27 which case the provisions of the GPL are applicable instead of the
28 above. If you wish to allow the use of your version of this file
29 only under the terms of the GPL and not to allow others to use
30 your version of this file under the MPL, indicate your decision
31 by deleting the provisions above and replace them with the notice
32 and other provisions required by the GPL. If you do not delete
33 the provisions above, a recipient may use your version of this
34 file under either the MPL or the GPL.
36 ======================================================================*/
38 #include <linux/module.h>
39 #include <linux/kernel.h>
40 #include <linux/init.h>
41 #include <linux/ptrace.h>
42 #include <linux/slab.h>
43 #include <linux/string.h>
44 #include <linux/timer.h>
45 #include <linux/ioport.h>
47 #include <asm/system.h>
49 #include <pcmcia/cistpl.h>
50 #include <pcmcia/cisreg.h>
51 #include <pcmcia/ds.h>
52 #include "hisax_cfg.h"
54 MODULE_DESCRIPTION("ISDN4Linux: PCMCIA client driver for Elsa PCM cards");
55 MODULE_AUTHOR("Klaus Lichtenwalder");
56 MODULE_LICENSE("Dual MPL/GPL");
59 /*====================================================================*/
61 /* Parameters that can be set with 'insmod' */
63 static int protocol = 2; /* EURO-ISDN Default */
64 module_param(protocol, int, 0);
66 /*====================================================================*/
69 The event() function is this driver's Card Services event handler.
70 It will be called by Card Services when an appropriate card status
71 event is received. The config() and release() entry points are
72 used to configure or release a socket, in response to card insertion
73 and ejection events. They are invoked from the elsa_cs event
77 static int elsa_cs_config(struct pcmcia_device *link) __devinit ;
78 static void elsa_cs_release(struct pcmcia_device *link);
81 The attach() and detach() entry points are used to create and destroy
82 "instances" of the driver, where each instance represents everything
83 needed to manage one actual PCMCIA card.
86 static void elsa_cs_detach(struct pcmcia_device *p_dev) __devexit;
88 typedef struct local_info_t {
89 struct pcmcia_device *p_dev;
94 /*======================================================================
96 elsa_cs_attach() creates an "instance" of the driver, allocatingx
97 local data structures for one device. The device is registered
100 The dev_link structure is initialized, but we don't actually
101 configure the card at this point -- we wait until we receive a
102 card insertion event.
104 ======================================================================*/
106 static int __devinit elsa_cs_probe(struct pcmcia_device *link)
110 dev_dbg(&link->dev, "elsa_cs_attach()\n");
112 /* Allocate space for private device-specific data */
113 local = kzalloc(sizeof(local_info_t), GFP_KERNEL);
114 if (!local) return -ENOMEM;
121 return elsa_cs_config(link);
122 } /* elsa_cs_attach */
124 /*======================================================================
126 This deletes a driver "instance". The device is de-registered
127 with Card Services. If it has been released, all local data
128 structures are freed. Otherwise, the structures will be freed
129 when the device is released.
131 ======================================================================*/
133 static void __devexit elsa_cs_detach(struct pcmcia_device *link)
135 local_info_t *info = link->priv;
137 dev_dbg(&link->dev, "elsa_cs_detach(0x%p)\n", link);
140 elsa_cs_release(link);
143 } /* elsa_cs_detach */
145 /*======================================================================
147 elsa_cs_config() is scheduled to run after a CARD_INSERTION event
148 is received, to configure the PCMCIA socket, and to make the
149 device available to the system.
151 ======================================================================*/
153 static int elsa_cs_configcheck(struct pcmcia_device *p_dev, void *priv_data)
158 p_dev->resource[0]->end = 8;
159 p_dev->resource[0]->flags &= IO_DATA_PATH_WIDTH;
160 p_dev->resource[0]->flags |= IO_DATA_PATH_WIDTH_AUTO;
162 if ((p_dev->resource[0]->end) && p_dev->resource[0]->start) {
163 printk(KERN_INFO "(elsa_cs: looks like the 96 model)\n");
164 if (!pcmcia_request_io(p_dev))
167 printk(KERN_INFO "(elsa_cs: looks like the 97 model)\n");
168 for (j = 0x2f0; j > 0x100; j -= 0x10) {
169 p_dev->resource[0]->start = j;
170 if (!pcmcia_request_io(p_dev))
177 static int __devinit elsa_cs_config(struct pcmcia_device *link)
183 dev_dbg(&link->dev, "elsa_config(0x%p)\n", link);
186 link->config_flags |= CONF_ENABLE_IRQ | CONF_AUTO_SET_IO;
188 i = pcmcia_loop_config(link, elsa_cs_configcheck, NULL);
195 i = pcmcia_enable_device(link);
199 icard.para[0] = link->irq;
200 icard.para[1] = link->resource[0]->start;
201 icard.protocol = protocol;
202 icard.typ = ISDN_CTYPE_ELSA_PCMCIA;
204 i = hisax_init_pcmcia(link, &(((local_info_t*)link->priv)->busy), &icard);
206 printk(KERN_ERR "elsa_cs: failed to initialize Elsa "
207 "PCMCIA %d with %pR\n", i, link->resource[0]);
208 elsa_cs_release(link);
210 ((local_info_t*)link->priv)->cardnr = i;
214 elsa_cs_release(link);
216 } /* elsa_cs_config */
218 /*======================================================================
220 After a card is removed, elsa_cs_release() will unregister the net
221 device, and release the PCMCIA configuration. If the device is
222 still open, this will be postponed until it is closed.
224 ======================================================================*/
226 static void elsa_cs_release(struct pcmcia_device *link)
228 local_info_t *local = link->priv;
230 dev_dbg(&link->dev, "elsa_cs_release(0x%p)\n", link);
233 if (local->cardnr >= 0) {
234 /* no unregister function with hisax */
235 HiSax_closecard(local->cardnr);
239 pcmcia_disable_device(link);
240 } /* elsa_cs_release */
242 static int elsa_suspend(struct pcmcia_device *link)
244 local_info_t *dev = link->priv;
251 static int elsa_resume(struct pcmcia_device *link)
253 local_info_t *dev = link->priv;
260 static struct pcmcia_device_id elsa_ids[] = {
261 PCMCIA_DEVICE_PROD_ID12("ELSA AG (Aachen, Germany)", "MicroLink ISDN/MC ", 0x983de2c4, 0x333ba257),
262 PCMCIA_DEVICE_PROD_ID12("ELSA GmbH, Aachen", "MicroLink ISDN/MC ", 0x639e5718, 0x333ba257),
265 MODULE_DEVICE_TABLE(pcmcia, elsa_ids);
267 static struct pcmcia_driver elsa_cs_driver = {
268 .owner = THIS_MODULE,
270 .probe = elsa_cs_probe,
271 .remove = __devexit_p(elsa_cs_detach),
272 .id_table = elsa_ids,
273 .suspend = elsa_suspend,
274 .resume = elsa_resume,
277 static int __init init_elsa_cs(void)
279 return pcmcia_register_driver(&elsa_cs_driver);
282 static void __exit exit_elsa_cs(void)
284 pcmcia_unregister_driver(&elsa_cs_driver);
287 module_init(init_elsa_cs);
288 module_exit(exit_elsa_cs);