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;
122 General socket configuration defaults can go here. In this
123 client, we assume very little, and rely on the CIS for almost
124 everything. In most clients, many details (i.e., number, sizes,
125 and attributes of IO windows) are fixed by the nature of the
126 device, and can be hard-wired here.
128 link->resource[0]->end = 8;
129 link->resource[0]->flags |= IO_DATA_PATH_WIDTH_AUTO;
131 return elsa_cs_config(link);
132 } /* elsa_cs_attach */
134 /*======================================================================
136 This deletes a driver "instance". The device is de-registered
137 with Card Services. If it has been released, all local data
138 structures are freed. Otherwise, the structures will be freed
139 when the device is released.
141 ======================================================================*/
143 static void __devexit elsa_cs_detach(struct pcmcia_device *link)
145 local_info_t *info = link->priv;
147 dev_dbg(&link->dev, "elsa_cs_detach(0x%p)\n", link);
150 elsa_cs_release(link);
153 } /* elsa_cs_detach */
155 /*======================================================================
157 elsa_cs_config() is scheduled to run after a CARD_INSERTION event
158 is received, to configure the PCMCIA socket, and to make the
159 device available to the system.
161 ======================================================================*/
163 static int elsa_cs_configcheck(struct pcmcia_device *p_dev,
164 cistpl_cftable_entry_t *cf,
165 cistpl_cftable_entry_t *dflt,
172 if ((cf->io.nwin > 0) && cf->io.win[0].base) {
173 printk(KERN_INFO "(elsa_cs: looks like the 96 model)\n");
174 p_dev->resource[0]->start = cf->io.win[0].base;
175 if (!pcmcia_request_io(p_dev))
178 printk(KERN_INFO "(elsa_cs: looks like the 97 model)\n");
179 for (j = 0x2f0; j > 0x100; j -= 0x10) {
180 p_dev->resource[0]->start = j;
181 if (!pcmcia_request_io(p_dev))
188 static int __devinit elsa_cs_config(struct pcmcia_device *link)
194 dev_dbg(&link->dev, "elsa_config(0x%p)\n", link);
197 i = pcmcia_loop_config(link, elsa_cs_configcheck, NULL);
204 i = pcmcia_enable_device(link);
208 /* Finally, report what we've done */
209 dev_info(&link->dev, "index 0x%02x: ",
211 printk(", irq %d", link->irq);
212 if (link->resource[0])
213 printk(" & %pR", link->resource[0]);
214 if (link->resource[1])
215 printk(" & %pR", link->resource[1]);
218 icard.para[0] = link->irq;
219 icard.para[1] = link->resource[0]->start;
220 icard.protocol = protocol;
221 icard.typ = ISDN_CTYPE_ELSA_PCMCIA;
223 i = hisax_init_pcmcia(link, &(((local_info_t*)link->priv)->busy), &icard);
225 printk(KERN_ERR "elsa_cs: failed to initialize Elsa "
226 "PCMCIA %d with %pR\n", i, link->resource[0]);
227 elsa_cs_release(link);
229 ((local_info_t*)link->priv)->cardnr = i;
233 elsa_cs_release(link);
235 } /* elsa_cs_config */
237 /*======================================================================
239 After a card is removed, elsa_cs_release() will unregister the net
240 device, and release the PCMCIA configuration. If the device is
241 still open, this will be postponed until it is closed.
243 ======================================================================*/
245 static void elsa_cs_release(struct pcmcia_device *link)
247 local_info_t *local = link->priv;
249 dev_dbg(&link->dev, "elsa_cs_release(0x%p)\n", link);
252 if (local->cardnr >= 0) {
253 /* no unregister function with hisax */
254 HiSax_closecard(local->cardnr);
258 pcmcia_disable_device(link);
259 } /* elsa_cs_release */
261 static int elsa_suspend(struct pcmcia_device *link)
263 local_info_t *dev = link->priv;
270 static int elsa_resume(struct pcmcia_device *link)
272 local_info_t *dev = link->priv;
279 static struct pcmcia_device_id elsa_ids[] = {
280 PCMCIA_DEVICE_PROD_ID12("ELSA AG (Aachen, Germany)", "MicroLink ISDN/MC ", 0x983de2c4, 0x333ba257),
281 PCMCIA_DEVICE_PROD_ID12("ELSA GmbH, Aachen", "MicroLink ISDN/MC ", 0x639e5718, 0x333ba257),
284 MODULE_DEVICE_TABLE(pcmcia, elsa_ids);
286 static struct pcmcia_driver elsa_cs_driver = {
287 .owner = THIS_MODULE,
291 .probe = elsa_cs_probe,
292 .remove = __devexit_p(elsa_cs_detach),
293 .id_table = elsa_ids,
294 .suspend = elsa_suspend,
295 .resume = elsa_resume,
298 static int __init init_elsa_cs(void)
300 return pcmcia_register_driver(&elsa_cs_driver);
303 static void __exit exit_elsa_cs(void)
305 pcmcia_unregister_driver(&elsa_cs_driver);
308 module_init(init_elsa_cs);
309 module_exit(exit_elsa_cs);