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/sched.h>
42 #include <linux/ptrace.h>
43 #include <linux/slab.h>
44 #include <linux/string.h>
45 #include <linux/timer.h>
46 #include <linux/ioport.h>
48 #include <asm/system.h>
50 #include <pcmcia/cs_types.h>
51 #include <pcmcia/cs.h>
52 #include <pcmcia/cistpl.h>
53 #include <pcmcia/cisreg.h>
54 #include <pcmcia/ds.h>
55 #include "hisax_cfg.h"
57 MODULE_DESCRIPTION("ISDN4Linux: PCMCIA client driver for Elsa PCM cards");
58 MODULE_AUTHOR("Klaus Lichtenwalder");
59 MODULE_LICENSE("Dual MPL/GPL");
62 All the PCMCIA modules use PCMCIA_DEBUG to control debugging. If
63 you do not define PCMCIA_DEBUG at all, all the debug code will be
64 left out. If you compile with PCMCIA_DEBUG=0, the debug code will
65 be present but disabled -- but it can then be enabled for specific
66 modules at load time with a 'pc_debug=#' option to insmod.
70 static int pc_debug = PCMCIA_DEBUG;
71 module_param(pc_debug, int, 0);
72 #define DEBUG(n, args...) if (pc_debug>(n)) printk(KERN_DEBUG args);
73 static char *version =
74 "elsa_cs.c $Revision: 1.2.2.4 $ $Date: 2004/01/25 15:07:06 $ (K.Lichtenwalder)";
76 #define DEBUG(n, args...)
79 /*====================================================================*/
81 /* Parameters that can be set with 'insmod' */
83 static int protocol = 2; /* EURO-ISDN Default */
84 module_param(protocol, int, 0);
86 /*====================================================================*/
89 The event() function is this driver's Card Services event handler.
90 It will be called by Card Services when an appropriate card status
91 event is received. The config() and release() entry points are
92 used to configure or release a socket, in response to card insertion
93 and ejection events. They are invoked from the elsa_cs event
97 static int elsa_cs_config(struct pcmcia_device *link);
98 static void elsa_cs_release(struct pcmcia_device *link);
101 The attach() and detach() entry points are used to create and destroy
102 "instances" of the driver, where each instance represents everything
103 needed to manage one actual PCMCIA card.
106 static void elsa_cs_detach(struct pcmcia_device *p_dev);
109 A driver needs to provide a dev_node_t structure for each device
110 on a card. In some cases, there is only one device per card (for
111 example, ethernet cards, modems). In other cases, there may be
112 many actual or logical devices (SCSI adapters, memory cards with
113 multiple partitions). The dev_node_t structures need to be kept
114 in a linked list starting at the 'dev' field of a struct pcmcia_device
115 structure. We allocate them in the card's private data structure,
116 because they generally shouldn't be allocated dynamically.
117 In this case, we also provide a flag to indicate if a device is
118 "stopped" due to a power management event, or card ejection. The
119 device IO routines can use a flag like this to throttle IO to a
120 card that is not ready to accept it.
123 typedef struct local_info_t {
124 struct pcmcia_device *p_dev;
130 /*======================================================================
132 elsa_cs_attach() creates an "instance" of the driver, allocatingx
133 local data structures for one device. The device is registered
136 The dev_link structure is initialized, but we don't actually
137 configure the card at this point -- we wait until we receive a
138 card insertion event.
140 ======================================================================*/
142 static int elsa_cs_probe(struct pcmcia_device *link)
146 DEBUG(0, "elsa_cs_attach()\n");
148 /* Allocate space for private device-specific data */
149 local = kzalloc(sizeof(local_info_t), GFP_KERNEL);
150 if (!local) return -ENOMEM;
157 /* Interrupt setup */
158 link->irq.Attributes = IRQ_TYPE_DYNAMIC_SHARING|IRQ_FIRST_SHARED;
159 link->irq.IRQInfo1 = IRQ_LEVEL_ID|IRQ_SHARE_ID;
160 link->irq.Handler = NULL;
163 General socket configuration defaults can go here. In this
164 client, we assume very little, and rely on the CIS for almost
165 everything. In most clients, many details (i.e., number, sizes,
166 and attributes of IO windows) are fixed by the nature of the
167 device, and can be hard-wired here.
169 link->io.NumPorts1 = 8;
170 link->io.Attributes1 = IO_DATA_PATH_WIDTH_AUTO;
171 link->io.IOAddrLines = 3;
173 link->conf.Attributes = CONF_ENABLE_IRQ;
174 link->conf.IntType = INT_MEMORY_AND_IO;
176 return elsa_cs_config(link);
177 } /* elsa_cs_attach */
179 /*======================================================================
181 This deletes a driver "instance". The device is de-registered
182 with Card Services. If it has been released, all local data
183 structures are freed. Otherwise, the structures will be freed
184 when the device is released.
186 ======================================================================*/
188 static void elsa_cs_detach(struct pcmcia_device *link)
190 local_info_t *info = link->priv;
192 DEBUG(0, "elsa_cs_detach(0x%p)\n", link);
195 elsa_cs_release(link);
198 } /* elsa_cs_detach */
200 /*======================================================================
202 elsa_cs_config() is scheduled to run after a CARD_INSERTION event
203 is received, to configure the PCMCIA socket, and to make the
204 device available to the system.
206 ======================================================================*/
207 static int get_tuple(struct pcmcia_device *handle, tuple_t *tuple,
210 int i = pcmcia_get_tuple_data(handle, tuple);
211 if (i != CS_SUCCESS) return i;
212 return pcmcia_parse_tuple(handle, tuple, parse);
215 static int first_tuple(struct pcmcia_device *handle, tuple_t *tuple,
218 int i = pcmcia_get_first_tuple(handle, tuple);
219 if (i != CS_SUCCESS) return i;
220 return get_tuple(handle, tuple, parse);
223 static int next_tuple(struct pcmcia_device *handle, tuple_t *tuple,
226 int i = pcmcia_get_next_tuple(handle, tuple);
227 if (i != CS_SUCCESS) return i;
228 return get_tuple(handle, tuple, parse);
231 static int elsa_cs_config(struct pcmcia_device *link)
238 cistpl_cftable_entry_t *cf = &parse.cftable_entry;
241 DEBUG(0, "elsa_config(0x%p)\n", link);
244 tuple.TupleData = (cisdata_t *)buf;
245 tuple.TupleOffset = 0; tuple.TupleDataMax = 255;
246 tuple.Attributes = 0;
247 tuple.DesiredTuple = CISTPL_CFTABLE_ENTRY;
248 i = first_tuple(link, &tuple, &parse);
249 while (i == CS_SUCCESS) {
250 if ( (cf->io.nwin > 0) && cf->io.win[0].base) {
251 printk(KERN_INFO "(elsa_cs: looks like the 96 model)\n");
252 link->conf.ConfigIndex = cf->index;
253 link->io.BasePort1 = cf->io.win[0].base;
254 i = pcmcia_request_io(link, &link->io);
255 if (i == CS_SUCCESS) break;
257 printk(KERN_INFO "(elsa_cs: looks like the 97 model)\n");
258 link->conf.ConfigIndex = cf->index;
259 for (i = 0, j = 0x2f0; j > 0x100; j -= 0x10) {
260 link->io.BasePort1 = j;
261 i = pcmcia_request_io(link, &link->io);
262 if (i == CS_SUCCESS) break;
266 i = next_tuple(link, &tuple, &parse);
269 if (i != CS_SUCCESS) {
274 i = pcmcia_request_irq(link, &link->irq);
275 if (i != CS_SUCCESS) {
276 link->irq.AssignedIRQ = 0;
277 last_fn = RequestIRQ;
281 i = pcmcia_request_configuration(link, &link->conf);
282 if (i != CS_SUCCESS) {
283 last_fn = RequestConfiguration;
287 /* At this point, the dev_node_t structure(s) should be
288 initialized and arranged in a linked list at link->dev. *//* */
289 sprintf(dev->node.dev_name, "elsa");
290 dev->node.major = dev->node.minor = 0x0;
292 link->dev_node = &dev->node;
294 /* Finally, report what we've done */
295 printk(KERN_INFO "%s: index 0x%02x: ",
296 dev->node.dev_name, link->conf.ConfigIndex);
297 if (link->conf.Attributes & CONF_ENABLE_IRQ)
298 printk(", irq %d", link->irq.AssignedIRQ);
299 if (link->io.NumPorts1)
300 printk(", io 0x%04x-0x%04x", link->io.BasePort1,
301 link->io.BasePort1+link->io.NumPorts1-1);
302 if (link->io.NumPorts2)
303 printk(" & 0x%04x-0x%04x", link->io.BasePort2,
304 link->io.BasePort2+link->io.NumPorts2-1);
307 icard.para[0] = link->irq.AssignedIRQ;
308 icard.para[1] = link->io.BasePort1;
309 icard.protocol = protocol;
310 icard.typ = ISDN_CTYPE_ELSA_PCMCIA;
312 i = hisax_init_pcmcia(link, &(((local_info_t*)link->priv)->busy), &icard);
314 printk(KERN_ERR "elsa_cs: failed to initialize Elsa PCMCIA %d at i/o %#x\n",
315 i, link->io.BasePort1);
316 elsa_cs_release(link);
318 ((local_info_t*)link->priv)->cardnr = i;
322 cs_error(link, last_fn, i);
323 elsa_cs_release(link);
325 } /* elsa_cs_config */
327 /*======================================================================
329 After a card is removed, elsa_cs_release() will unregister the net
330 device, and release the PCMCIA configuration. If the device is
331 still open, this will be postponed until it is closed.
333 ======================================================================*/
335 static void elsa_cs_release(struct pcmcia_device *link)
337 local_info_t *local = link->priv;
339 DEBUG(0, "elsa_cs_release(0x%p)\n", link);
342 if (local->cardnr >= 0) {
343 /* no unregister function with hisax */
344 HiSax_closecard(local->cardnr);
348 pcmcia_disable_device(link);
349 } /* elsa_cs_release */
351 static int elsa_suspend(struct pcmcia_device *link)
353 local_info_t *dev = link->priv;
360 static int elsa_resume(struct pcmcia_device *link)
362 local_info_t *dev = link->priv;
369 static struct pcmcia_device_id elsa_ids[] = {
370 PCMCIA_DEVICE_PROD_ID12("ELSA AG (Aachen, Germany)", "MicroLink ISDN/MC ", 0x983de2c4, 0x333ba257),
371 PCMCIA_DEVICE_PROD_ID12("ELSA GmbH, Aachen", "MicroLink ISDN/MC ", 0x639e5718, 0x333ba257),
374 MODULE_DEVICE_TABLE(pcmcia, elsa_ids);
376 static struct pcmcia_driver elsa_cs_driver = {
377 .owner = THIS_MODULE,
381 .probe = elsa_cs_probe,
382 .remove = elsa_cs_detach,
383 .id_table = elsa_ids,
384 .suspend = elsa_suspend,
385 .resume = elsa_resume,
388 static int __init init_elsa_cs(void)
390 return pcmcia_register_driver(&elsa_cs_driver);
393 static void __exit exit_elsa_cs(void)
395 pcmcia_unregister_driver(&elsa_cs_driver);
398 module_init(init_elsa_cs);
399 module_exit(exit_elsa_cs);