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 void 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_attach(struct pcmcia_device *link)
146 DEBUG(0, "elsa_cs_attach()\n");
148 /* Allocate space for private device-specific data */
149 local = kmalloc(sizeof(local_info_t), GFP_KERNEL);
150 if (!local) return -ENOMEM;
151 memset(local, 0, sizeof(local_info_t));
158 /* Interrupt setup */
159 link->irq.Attributes = IRQ_TYPE_DYNAMIC_SHARING|IRQ_FIRST_SHARED;
160 link->irq.IRQInfo1 = IRQ_LEVEL_ID|IRQ_SHARE_ID;
161 link->irq.Handler = NULL;
164 General socket configuration defaults can go here. In this
165 client, we assume very little, and rely on the CIS for almost
166 everything. In most clients, many details (i.e., number, sizes,
167 and attributes of IO windows) are fixed by the nature of the
168 device, and can be hard-wired here.
170 link->io.NumPorts1 = 8;
171 link->io.Attributes1 = IO_DATA_PATH_WIDTH_AUTO;
172 link->io.IOAddrLines = 3;
174 link->conf.Attributes = CONF_ENABLE_IRQ;
175 link->conf.IntType = INT_MEMORY_AND_IO;
177 link->state |= DEV_PRESENT | DEV_CONFIG_PENDING;
178 elsa_cs_config(link);
181 } /* elsa_cs_attach */
183 /*======================================================================
185 This deletes a driver "instance". The device is de-registered
186 with Card Services. If it has been released, all local data
187 structures are freed. Otherwise, the structures will be freed
188 when the device is released.
190 ======================================================================*/
192 static void elsa_cs_detach(struct pcmcia_device *link)
194 local_info_t *info = link->priv;
196 DEBUG(0, "elsa_cs_detach(0x%p)\n", link);
198 if (link->state & DEV_CONFIG) {
200 elsa_cs_release(link);
205 } /* elsa_cs_detach */
207 /*======================================================================
209 elsa_cs_config() is scheduled to run after a CARD_INSERTION event
210 is received, to configure the PCMCIA socket, and to make the
211 device available to the system.
213 ======================================================================*/
214 static int get_tuple(struct pcmcia_device *handle, tuple_t *tuple,
217 int i = pcmcia_get_tuple_data(handle, tuple);
218 if (i != CS_SUCCESS) return i;
219 return pcmcia_parse_tuple(handle, tuple, parse);
222 static int first_tuple(struct pcmcia_device *handle, tuple_t *tuple,
225 int i = pcmcia_get_first_tuple(handle, tuple);
226 if (i != CS_SUCCESS) return i;
227 return get_tuple(handle, tuple, parse);
230 static int next_tuple(struct pcmcia_device *handle, tuple_t *tuple,
233 int i = pcmcia_get_next_tuple(handle, tuple);
234 if (i != CS_SUCCESS) return i;
235 return get_tuple(handle, tuple, parse);
238 static void elsa_cs_config(struct pcmcia_device *link)
245 cistpl_cftable_entry_t *cf = &parse.cftable_entry;
248 DEBUG(0, "elsa_config(0x%p)\n", link);
252 This reads the card's CONFIG tuple to find its configuration
255 tuple.DesiredTuple = CISTPL_CONFIG;
256 tuple.TupleData = (cisdata_t *)buf;
257 tuple.TupleDataMax = 255;
258 tuple.TupleOffset = 0;
259 tuple.Attributes = 0;
260 i = first_tuple(link, &tuple, &parse);
261 if (i != CS_SUCCESS) {
262 last_fn = ParseTuple;
265 link->conf.ConfigBase = parse.config.base;
266 link->conf.Present = parse.config.rmask[0];
269 link->state |= DEV_CONFIG;
271 tuple.TupleData = (cisdata_t *)buf;
272 tuple.TupleOffset = 0; tuple.TupleDataMax = 255;
273 tuple.Attributes = 0;
274 tuple.DesiredTuple = CISTPL_CFTABLE_ENTRY;
275 i = first_tuple(link, &tuple, &parse);
276 while (i == CS_SUCCESS) {
277 if ( (cf->io.nwin > 0) && cf->io.win[0].base) {
278 printk(KERN_INFO "(elsa_cs: looks like the 96 model)\n");
279 link->conf.ConfigIndex = cf->index;
280 link->io.BasePort1 = cf->io.win[0].base;
281 i = pcmcia_request_io(link, &link->io);
282 if (i == CS_SUCCESS) break;
284 printk(KERN_INFO "(elsa_cs: looks like the 97 model)\n");
285 link->conf.ConfigIndex = cf->index;
286 for (i = 0, j = 0x2f0; j > 0x100; j -= 0x10) {
287 link->io.BasePort1 = j;
288 i = pcmcia_request_io(link, &link->io);
289 if (i == CS_SUCCESS) break;
293 i = next_tuple(link, &tuple, &parse);
296 if (i != CS_SUCCESS) {
301 i = pcmcia_request_irq(link, &link->irq);
302 if (i != CS_SUCCESS) {
303 link->irq.AssignedIRQ = 0;
304 last_fn = RequestIRQ;
308 i = pcmcia_request_configuration(link, &link->conf);
309 if (i != CS_SUCCESS) {
310 last_fn = RequestConfiguration;
314 /* At this point, the dev_node_t structure(s) should be
315 initialized and arranged in a linked list at link->dev. *//* */
316 sprintf(dev->node.dev_name, "elsa");
317 dev->node.major = dev->node.minor = 0x0;
319 link->dev_node = &dev->node;
321 /* Finally, report what we've done */
322 printk(KERN_INFO "%s: index 0x%02x: ",
323 dev->node.dev_name, link->conf.ConfigIndex);
324 if (link->conf.Attributes & CONF_ENABLE_IRQ)
325 printk(", irq %d", link->irq.AssignedIRQ);
326 if (link->io.NumPorts1)
327 printk(", io 0x%04x-0x%04x", link->io.BasePort1,
328 link->io.BasePort1+link->io.NumPorts1-1);
329 if (link->io.NumPorts2)
330 printk(" & 0x%04x-0x%04x", link->io.BasePort2,
331 link->io.BasePort2+link->io.NumPorts2-1);
334 link->state &= ~DEV_CONFIG_PENDING;
336 icard.para[0] = link->irq.AssignedIRQ;
337 icard.para[1] = link->io.BasePort1;
338 icard.protocol = protocol;
339 icard.typ = ISDN_CTYPE_ELSA_PCMCIA;
341 i = hisax_init_pcmcia(link, &(((local_info_t*)link->priv)->busy), &icard);
343 printk(KERN_ERR "elsa_cs: failed to initialize Elsa PCMCIA %d at i/o %#x\n",
344 i, link->io.BasePort1);
345 elsa_cs_release(link);
347 ((local_info_t*)link->priv)->cardnr = i;
351 cs_error(link, last_fn, i);
352 elsa_cs_release(link);
353 } /* elsa_cs_config */
355 /*======================================================================
357 After a card is removed, elsa_cs_release() will unregister the net
358 device, and release the PCMCIA configuration. If the device is
359 still open, this will be postponed until it is closed.
361 ======================================================================*/
363 static void elsa_cs_release(struct pcmcia_device *link)
365 local_info_t *local = link->priv;
367 DEBUG(0, "elsa_cs_release(0x%p)\n", link);
370 if (local->cardnr >= 0) {
371 /* no unregister function with hisax */
372 HiSax_closecard(local->cardnr);
376 pcmcia_disable_device(link);
377 } /* elsa_cs_release */
379 static int elsa_suspend(struct pcmcia_device *link)
381 local_info_t *dev = link->priv;
388 static int elsa_resume(struct pcmcia_device *link)
390 local_info_t *dev = link->priv;
397 static struct pcmcia_device_id elsa_ids[] = {
398 PCMCIA_DEVICE_PROD_ID12("ELSA AG (Aachen, Germany)", "MicroLink ISDN/MC ", 0x983de2c4, 0x333ba257),
399 PCMCIA_DEVICE_PROD_ID12("ELSA GmbH, Aachen", "MicroLink ISDN/MC ", 0x639e5718, 0x333ba257),
402 MODULE_DEVICE_TABLE(pcmcia, elsa_ids);
404 static struct pcmcia_driver elsa_cs_driver = {
405 .owner = THIS_MODULE,
409 .probe = elsa_cs_attach,
410 .remove = elsa_cs_detach,
411 .id_table = elsa_ids,
412 .suspend = elsa_suspend,
413 .resume = elsa_resume,
416 static int __init init_elsa_cs(void)
418 return pcmcia_register_driver(&elsa_cs_driver);
421 static void __exit exit_elsa_cs(void)
423 pcmcia_unregister_driver(&elsa_cs_driver);
426 module_init(init_elsa_cs);
427 module_exit(exit_elsa_cs);