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/cs.h>
50 #include <pcmcia/cistpl.h>
51 #include <pcmcia/cisreg.h>
52 #include <pcmcia/ds.h>
53 #include "hisax_cfg.h"
55 MODULE_DESCRIPTION("ISDN4Linux: PCMCIA client driver for Elsa PCM cards");
56 MODULE_AUTHOR("Klaus Lichtenwalder");
57 MODULE_LICENSE("Dual MPL/GPL");
60 /*====================================================================*/
62 /* Parameters that can be set with 'insmod' */
64 static int protocol = 2; /* EURO-ISDN Default */
65 module_param(protocol, int, 0);
67 /*====================================================================*/
70 The event() function is this driver's Card Services event handler.
71 It will be called by Card Services when an appropriate card status
72 event is received. The config() and release() entry points are
73 used to configure or release a socket, in response to card insertion
74 and ejection events. They are invoked from the elsa_cs event
78 static int elsa_cs_config(struct pcmcia_device *link) __devinit ;
79 static void elsa_cs_release(struct pcmcia_device *link);
82 The attach() and detach() entry points are used to create and destroy
83 "instances" of the driver, where each instance represents everything
84 needed to manage one actual PCMCIA card.
87 static void elsa_cs_detach(struct pcmcia_device *p_dev) __devexit;
89 typedef struct local_info_t {
90 struct pcmcia_device *p_dev;
95 /*======================================================================
97 elsa_cs_attach() creates an "instance" of the driver, allocatingx
98 local data structures for one device. The device is registered
101 The dev_link structure is initialized, but we don't actually
102 configure the card at this point -- we wait until we receive a
103 card insertion event.
105 ======================================================================*/
107 static int __devinit elsa_cs_probe(struct pcmcia_device *link)
111 dev_dbg(&link->dev, "elsa_cs_attach()\n");
113 /* Allocate space for private device-specific data */
114 local = kzalloc(sizeof(local_info_t), GFP_KERNEL);
115 if (!local) return -ENOMEM;
123 General socket configuration defaults can go here. In this
124 client, we assume very little, and rely on the CIS for almost
125 everything. In most clients, many details (i.e., number, sizes,
126 and attributes of IO windows) are fixed by the nature of the
127 device, and can be hard-wired here.
129 link->io.NumPorts1 = 8;
130 link->io.Attributes1 = IO_DATA_PATH_WIDTH_AUTO;
131 link->io.IOAddrLines = 3;
133 link->conf.Attributes = CONF_ENABLE_IRQ;
134 link->conf.IntType = INT_MEMORY_AND_IO;
136 return elsa_cs_config(link);
137 } /* elsa_cs_attach */
139 /*======================================================================
141 This deletes a driver "instance". The device is de-registered
142 with Card Services. If it has been released, all local data
143 structures are freed. Otherwise, the structures will be freed
144 when the device is released.
146 ======================================================================*/
148 static void __devexit elsa_cs_detach(struct pcmcia_device *link)
150 local_info_t *info = link->priv;
152 dev_dbg(&link->dev, "elsa_cs_detach(0x%p)\n", link);
155 elsa_cs_release(link);
158 } /* elsa_cs_detach */
160 /*======================================================================
162 elsa_cs_config() is scheduled to run after a CARD_INSERTION event
163 is received, to configure the PCMCIA socket, and to make the
164 device available to the system.
166 ======================================================================*/
168 static int elsa_cs_configcheck(struct pcmcia_device *p_dev,
169 cistpl_cftable_entry_t *cf,
170 cistpl_cftable_entry_t *dflt,
176 if ((cf->io.nwin > 0) && cf->io.win[0].base) {
177 printk(KERN_INFO "(elsa_cs: looks like the 96 model)\n");
178 p_dev->io.BasePort1 = cf->io.win[0].base;
179 if (!pcmcia_request_io(p_dev, &p_dev->io))
182 printk(KERN_INFO "(elsa_cs: looks like the 97 model)\n");
183 for (j = 0x2f0; j > 0x100; j -= 0x10) {
184 p_dev->io.BasePort1 = j;
185 if (!pcmcia_request_io(p_dev, &p_dev->io))
192 static int __devinit elsa_cs_config(struct pcmcia_device *link)
198 dev_dbg(&link->dev, "elsa_config(0x%p)\n", link);
201 i = pcmcia_loop_config(link, elsa_cs_configcheck, NULL);
208 i = pcmcia_request_configuration(link, &link->conf);
212 /* Finally, report what we've done */
213 dev_info(&link->dev, "index 0x%02x: ",
214 link->conf.ConfigIndex);
215 if (link->conf.Attributes & CONF_ENABLE_IRQ)
216 printk(", irq %d", link->irq);
217 if (link->resource[0])
218 printk(" & %pR", link->resource[0]);
219 if (link->resource[1])
220 printk(" & %pR", link->resource[1]);
223 icard.para[0] = link->irq;
224 icard.para[1] = link->resource[0]->start;
225 icard.protocol = protocol;
226 icard.typ = ISDN_CTYPE_ELSA_PCMCIA;
228 i = hisax_init_pcmcia(link, &(((local_info_t*)link->priv)->busy), &icard);
230 printk(KERN_ERR "elsa_cs: failed to initialize Elsa "
231 "PCMCIA %d with %pR\n", i, link->resource[0]);
232 elsa_cs_release(link);
234 ((local_info_t*)link->priv)->cardnr = i;
238 elsa_cs_release(link);
240 } /* elsa_cs_config */
242 /*======================================================================
244 After a card is removed, elsa_cs_release() will unregister the net
245 device, and release the PCMCIA configuration. If the device is
246 still open, this will be postponed until it is closed.
248 ======================================================================*/
250 static void elsa_cs_release(struct pcmcia_device *link)
252 local_info_t *local = link->priv;
254 dev_dbg(&link->dev, "elsa_cs_release(0x%p)\n", link);
257 if (local->cardnr >= 0) {
258 /* no unregister function with hisax */
259 HiSax_closecard(local->cardnr);
263 pcmcia_disable_device(link);
264 } /* elsa_cs_release */
266 static int elsa_suspend(struct pcmcia_device *link)
268 local_info_t *dev = link->priv;
275 static int elsa_resume(struct pcmcia_device *link)
277 local_info_t *dev = link->priv;
284 static struct pcmcia_device_id elsa_ids[] = {
285 PCMCIA_DEVICE_PROD_ID12("ELSA AG (Aachen, Germany)", "MicroLink ISDN/MC ", 0x983de2c4, 0x333ba257),
286 PCMCIA_DEVICE_PROD_ID12("ELSA GmbH, Aachen", "MicroLink ISDN/MC ", 0x639e5718, 0x333ba257),
289 MODULE_DEVICE_TABLE(pcmcia, elsa_ids);
291 static struct pcmcia_driver elsa_cs_driver = {
292 .owner = THIS_MODULE,
296 .probe = elsa_cs_probe,
297 .remove = __devexit_p(elsa_cs_detach),
298 .id_table = elsa_ids,
299 .suspend = elsa_suspend,
300 .resume = elsa_resume,
303 static int __init init_elsa_cs(void)
305 return pcmcia_register_driver(&elsa_cs_driver);
308 static void __exit exit_elsa_cs(void)
310 pcmcia_unregister_driver(&elsa_cs_driver);
313 module_init(init_elsa_cs);
314 module_exit(exit_elsa_cs);