1 /* $Id: avm_cs.c,v 1.4.6.3 2001/09/23 22:24:33 kai Exp $
3 * A PCMCIA client driver for AVM B1/M1/M2
5 * Copyright 1999 by Carsten Paeth <calle@calle.de>
7 * This software may be used and distributed according to the terms
8 * of the GNU General Public License, incorporated herein by reference.
12 #include <linux/module.h>
13 #include <linux/kernel.h>
14 #include <linux/init.h>
15 #include <linux/sched.h>
16 #include <linux/ptrace.h>
17 #include <linux/slab.h>
18 #include <linux/string.h>
19 #include <linux/tty.h>
20 #include <linux/serial.h>
21 #include <linux/major.h>
23 #include <asm/system.h>
25 #include <pcmcia/cs_types.h>
26 #include <pcmcia/cs.h>
27 #include <pcmcia/cistpl.h>
28 #include <pcmcia/ciscode.h>
29 #include <pcmcia/ds.h>
30 #include <pcmcia/cisreg.h>
32 #include <linux/skbuff.h>
33 #include <linux/capi.h>
34 #include <linux/b1lli.h>
35 #include <linux/b1pcmcia.h>
37 /*====================================================================*/
39 MODULE_DESCRIPTION("CAPI4Linux: PCMCIA client driver for AVM B1/M1/M2");
40 MODULE_AUTHOR("Carsten Paeth");
41 MODULE_LICENSE("GPL");
43 /*====================================================================*/
46 The event() function is this driver's Card Services event handler.
47 It will be called by Card Services when an appropriate card status
48 event is received. The config() and release() entry points are
49 used to configure or release a socket, in response to card insertion
50 and ejection events. They are invoked from the skeleton event
54 static void avmcs_config(struct pcmcia_device *link);
55 static void avmcs_release(struct pcmcia_device *link);
58 The attach() and detach() entry points are used to create and destroy
59 "instances" of the driver, where each instance represents everything
60 needed to manage one actual PCMCIA card.
63 static void avmcs_detach(struct pcmcia_device *p_dev);
66 A linked list of "instances" of the skeleton device. Each actual
67 PCMCIA card corresponds to one device instance, and is described
68 by one struct pcmcia_device structure (defined in ds.h).
70 You may not want to use a linked list for this -- for example, the
71 memory card driver uses an array of struct pcmcia_device pointers, where minor
72 device numbers are used to derive the corresponding array index.
76 A driver needs to provide a dev_node_t structure for each device
77 on a card. In some cases, there is only one device per card (for
78 example, ethernet cards, modems). In other cases, there may be
79 many actual or logical devices (SCSI adapters, memory cards with
80 multiple partitions). The dev_node_t structures need to be kept
81 in a linked list starting at the 'dev' field of a struct pcmcia_device
82 structure. We allocate them in the card's private data structure,
83 because they generally can't be allocated dynamically.
86 typedef struct local_info_t {
90 /*======================================================================
92 avmcs_attach() creates an "instance" of the driver, allocating
93 local data structures for one device. The device is registered
96 The dev_link structure is initialized, but we don't actually
97 configure the card at this point -- we wait until we receive a
100 ======================================================================*/
102 static int avmcs_attach(struct pcmcia_device *p_dev)
106 /* The io structure describes IO port mapping */
107 p_dev->io.NumPorts1 = 16;
108 p_dev->io.Attributes1 = IO_DATA_PATH_WIDTH_8;
109 p_dev->io.NumPorts2 = 0;
111 /* Interrupt setup */
112 p_dev->irq.Attributes = IRQ_TYPE_EXCLUSIVE;
113 p_dev->irq.Attributes = IRQ_TYPE_DYNAMIC_SHARING|IRQ_FIRST_SHARED;
115 p_dev->irq.IRQInfo1 = IRQ_LEVEL_ID;
117 /* General socket configuration */
118 p_dev->conf.Attributes = CONF_ENABLE_IRQ;
119 p_dev->conf.IntType = INT_MEMORY_AND_IO;
120 p_dev->conf.ConfigIndex = 1;
121 p_dev->conf.Present = PRESENT_OPTION;
123 /* Allocate space for private device-specific data */
124 local = kmalloc(sizeof(local_info_t), GFP_KERNEL);
127 memset(local, 0, sizeof(local_info_t));
130 p_dev->state |= DEV_PRESENT | DEV_CONFIG_PENDING;
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 avmcs_detach(struct pcmcia_device *link)
150 if (link->state & DEV_CONFIG)
156 /*======================================================================
158 avmcs_config() is scheduled to run after a CARD_INSERTION event
159 is received, to configure the PCMCIA socket, and to make the
160 ethernet device available to the system.
162 ======================================================================*/
164 static int get_tuple(struct pcmcia_device *handle, tuple_t *tuple,
167 int i = pcmcia_get_tuple_data(handle, tuple);
168 if (i != CS_SUCCESS) return i;
169 return pcmcia_parse_tuple(handle, tuple, parse);
172 static int first_tuple(struct pcmcia_device *handle, tuple_t *tuple,
175 int i = pcmcia_get_first_tuple(handle, tuple);
176 if (i != CS_SUCCESS) return i;
177 return get_tuple(handle, tuple, parse);
180 static int next_tuple(struct pcmcia_device *handle, tuple_t *tuple,
183 int i = pcmcia_get_next_tuple(handle, tuple);
184 if (i != CS_SUCCESS) return i;
185 return get_tuple(handle, tuple, parse);
188 static void avmcs_config(struct pcmcia_device *link)
192 cistpl_cftable_entry_t *cf = &parse.cftable_entry;
198 int (*addcard)(unsigned int port, unsigned irq);
203 This reads the card's CONFIG tuple to find its configuration
207 tuple.DesiredTuple = CISTPL_CONFIG;
208 i = pcmcia_get_first_tuple(link, &tuple);
209 if (i != CS_SUCCESS) break;
210 tuple.TupleData = buf;
211 tuple.TupleDataMax = 64;
212 tuple.TupleOffset = 0;
213 i = pcmcia_get_tuple_data(link, &tuple);
214 if (i != CS_SUCCESS) break;
215 i = pcmcia_parse_tuple(link, &tuple, &parse);
216 if (i != CS_SUCCESS) break;
217 link->conf.ConfigBase = parse.config.base;
219 if (i != CS_SUCCESS) {
220 cs_error(link, ParseTuple, i);
221 link->state &= ~DEV_CONFIG_PENDING;
226 link->state |= DEV_CONFIG;
230 tuple.Attributes = 0;
231 tuple.TupleData = buf;
232 tuple.TupleDataMax = 254;
233 tuple.TupleOffset = 0;
234 tuple.DesiredTuple = CISTPL_VERS_1;
237 if( !first_tuple(link, &tuple, &parse) && parse.version_1.ns > 1 ) {
238 strlcpy(devname,parse.version_1.str + parse.version_1.ofs[1],
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) {
251 link->conf.ConfigIndex = cf->index;
252 link->io.BasePort1 = cf->io.win[0].base;
253 link->io.NumPorts1 = cf->io.win[0].len;
254 link->io.NumPorts2 = 0;
255 printk(KERN_INFO "avm_cs: testing i/o %#x-%#x\n",
257 link->io.BasePort1+link->io.NumPorts1-1);
258 i = pcmcia_request_io(link, &link->io);
259 if (i == CS_SUCCESS) goto found_port;
261 i = next_tuple(link, &tuple, &parse);
265 if (i != CS_SUCCESS) {
266 cs_error(link, RequestIO, i);
271 * allocate an interrupt line
273 i = pcmcia_request_irq(link, &link->irq);
274 if (i != CS_SUCCESS) {
275 cs_error(link, RequestIRQ, i);
277 pcmcia_disable_device(link);
282 * configure the PCMCIA socket
284 i = pcmcia_request_configuration(link, &link->conf);
285 if (i != CS_SUCCESS) {
286 cs_error(link, RequestConfiguration, i);
287 pcmcia_disable_device(link);
293 /* At this point, the dev_node_t structure(s) should be
294 initialized and arranged in a linked list at link->dev. */
297 char *s = strrchr(devname, ' ');
301 strcpy(dev->node.dev_name, s);
302 if (strcmp("M1", s) == 0) {
303 cardtype = AVM_CARDTYPE_M1;
304 } else if (strcmp("M2", s) == 0) {
305 cardtype = AVM_CARDTYPE_M2;
307 cardtype = AVM_CARDTYPE_B1;
310 strcpy(dev->node.dev_name, "b1");
311 cardtype = AVM_CARDTYPE_B1;
314 dev->node.major = 64;
316 link->dev_node = &dev->node;
318 link->state &= ~DEV_CONFIG_PENDING;
319 /* If any step failed, release any partially configured state */
327 case AVM_CARDTYPE_M1: addcard = b1pcmcia_addcard_m1; break;
328 case AVM_CARDTYPE_M2: addcard = b1pcmcia_addcard_m2; break;
330 case AVM_CARDTYPE_B1: addcard = b1pcmcia_addcard_b1; break;
332 if ((i = (*addcard)(link->io.BasePort1, link->irq.AssignedIRQ)) < 0) {
333 printk(KERN_ERR "avm_cs: failed to add AVM-%s-Controller at i/o %#x, irq %d\n",
334 dev->node.dev_name, link->io.BasePort1, link->irq.AssignedIRQ);
342 /*======================================================================
344 After a card is removed, avmcs_release() will unregister the net
345 device, and release the PCMCIA configuration. If the device is
346 still open, this will be postponed until it is closed.
348 ======================================================================*/
350 static void avmcs_release(struct pcmcia_device *link)
352 b1pcmcia_delcard(link->io.BasePort1, link->irq.AssignedIRQ);
353 pcmcia_disable_device(link);
354 } /* avmcs_release */
357 static struct pcmcia_device_id avmcs_ids[] = {
358 PCMCIA_DEVICE_PROD_ID12("AVM", "ISDN-Controller B1", 0x95d42008, 0x845dc335),
359 PCMCIA_DEVICE_PROD_ID12("AVM", "Mobile ISDN-Controller M1", 0x95d42008, 0x81e10430),
360 PCMCIA_DEVICE_PROD_ID12("AVM", "Mobile ISDN-Controller M2", 0x95d42008, 0x18e8558a),
363 MODULE_DEVICE_TABLE(pcmcia, avmcs_ids);
365 static struct pcmcia_driver avmcs_driver = {
366 .owner = THIS_MODULE,
370 .probe = avmcs_attach,
371 .remove = avmcs_detach,
372 .id_table = avmcs_ids,
375 static int __init avmcs_init(void)
377 return pcmcia_register_driver(&avmcs_driver);
380 static void __exit avmcs_exit(void)
382 pcmcia_unregister_driver(&avmcs_driver);
385 module_init(avmcs_init);
386 module_exit(avmcs_exit);