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 int 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_probe(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;
131 return avmcs_config(p_dev);
137 /*======================================================================
139 This deletes a driver "instance". The device is de-registered
140 with Card Services. If it has been released, all local data
141 structures are freed. Otherwise, the structures will be freed
142 when the device is released.
144 ======================================================================*/
146 static void avmcs_detach(struct pcmcia_device *link)
148 if (link->state & DEV_CONFIG)
154 /*======================================================================
156 avmcs_config() is scheduled to run after a CARD_INSERTION event
157 is received, to configure the PCMCIA socket, and to make the
158 ethernet device available to the system.
160 ======================================================================*/
162 static int get_tuple(struct pcmcia_device *handle, tuple_t *tuple,
165 int i = pcmcia_get_tuple_data(handle, tuple);
166 if (i != CS_SUCCESS) return i;
167 return pcmcia_parse_tuple(handle, tuple, parse);
170 static int first_tuple(struct pcmcia_device *handle, tuple_t *tuple,
173 int i = pcmcia_get_first_tuple(handle, tuple);
174 if (i != CS_SUCCESS) return i;
175 return get_tuple(handle, tuple, parse);
178 static int next_tuple(struct pcmcia_device *handle, tuple_t *tuple,
181 int i = pcmcia_get_next_tuple(handle, tuple);
182 if (i != CS_SUCCESS) return i;
183 return get_tuple(handle, tuple, parse);
186 static int avmcs_config(struct pcmcia_device *link)
190 cistpl_cftable_entry_t *cf = &parse.cftable_entry;
196 int (*addcard)(unsigned int port, unsigned irq);
201 This reads the card's CONFIG tuple to find its configuration
205 tuple.DesiredTuple = CISTPL_CONFIG;
206 i = pcmcia_get_first_tuple(link, &tuple);
207 if (i != CS_SUCCESS) break;
208 tuple.TupleData = buf;
209 tuple.TupleDataMax = 64;
210 tuple.TupleOffset = 0;
211 i = pcmcia_get_tuple_data(link, &tuple);
212 if (i != CS_SUCCESS) break;
213 i = pcmcia_parse_tuple(link, &tuple, &parse);
214 if (i != CS_SUCCESS) break;
215 link->conf.ConfigBase = parse.config.base;
217 if (i != CS_SUCCESS) {
218 cs_error(link, ParseTuple, i);
219 link->state &= ~DEV_CONFIG_PENDING;
224 link->state |= DEV_CONFIG;
228 tuple.Attributes = 0;
229 tuple.TupleData = buf;
230 tuple.TupleDataMax = 254;
231 tuple.TupleOffset = 0;
232 tuple.DesiredTuple = CISTPL_VERS_1;
235 if( !first_tuple(link, &tuple, &parse) && parse.version_1.ns > 1 ) {
236 strlcpy(devname,parse.version_1.str + parse.version_1.ofs[1],
242 tuple.TupleData = (cisdata_t *)buf;
243 tuple.TupleOffset = 0; tuple.TupleDataMax = 255;
244 tuple.Attributes = 0;
245 tuple.DesiredTuple = CISTPL_CFTABLE_ENTRY;
246 i = first_tuple(link, &tuple, &parse);
247 while (i == CS_SUCCESS) {
248 if (cf->io.nwin > 0) {
249 link->conf.ConfigIndex = cf->index;
250 link->io.BasePort1 = cf->io.win[0].base;
251 link->io.NumPorts1 = cf->io.win[0].len;
252 link->io.NumPorts2 = 0;
253 printk(KERN_INFO "avm_cs: testing i/o %#x-%#x\n",
255 link->io.BasePort1+link->io.NumPorts1-1);
256 i = pcmcia_request_io(link, &link->io);
257 if (i == CS_SUCCESS) goto found_port;
259 i = next_tuple(link, &tuple, &parse);
263 if (i != CS_SUCCESS) {
264 cs_error(link, RequestIO, i);
269 * allocate an interrupt line
271 i = pcmcia_request_irq(link, &link->irq);
272 if (i != CS_SUCCESS) {
273 cs_error(link, RequestIRQ, i);
275 pcmcia_disable_device(link);
280 * configure the PCMCIA socket
282 i = pcmcia_request_configuration(link, &link->conf);
283 if (i != CS_SUCCESS) {
284 cs_error(link, RequestConfiguration, i);
285 pcmcia_disable_device(link);
291 /* At this point, the dev_node_t structure(s) should be
292 initialized and arranged in a linked list at link->dev. */
295 char *s = strrchr(devname, ' ');
299 strcpy(dev->node.dev_name, s);
300 if (strcmp("M1", s) == 0) {
301 cardtype = AVM_CARDTYPE_M1;
302 } else if (strcmp("M2", s) == 0) {
303 cardtype = AVM_CARDTYPE_M2;
305 cardtype = AVM_CARDTYPE_B1;
308 strcpy(dev->node.dev_name, "b1");
309 cardtype = AVM_CARDTYPE_B1;
312 dev->node.major = 64;
314 link->dev_node = &dev->node;
316 link->state &= ~DEV_CONFIG_PENDING;
317 /* If any step failed, release any partially configured state */
325 case AVM_CARDTYPE_M1: addcard = b1pcmcia_addcard_m1; break;
326 case AVM_CARDTYPE_M2: addcard = b1pcmcia_addcard_m2; break;
328 case AVM_CARDTYPE_B1: addcard = b1pcmcia_addcard_b1; break;
330 if ((i = (*addcard)(link->io.BasePort1, link->irq.AssignedIRQ)) < 0) {
331 printk(KERN_ERR "avm_cs: failed to add AVM-%s-Controller at i/o %#x, irq %d\n",
332 dev->node.dev_name, link->io.BasePort1, link->irq.AssignedIRQ);
341 /*======================================================================
343 After a card is removed, avmcs_release() will unregister the net
344 device, and release the PCMCIA configuration. If the device is
345 still open, this will be postponed until it is closed.
347 ======================================================================*/
349 static void avmcs_release(struct pcmcia_device *link)
351 b1pcmcia_delcard(link->io.BasePort1, link->irq.AssignedIRQ);
352 pcmcia_disable_device(link);
353 } /* avmcs_release */
356 static struct pcmcia_device_id avmcs_ids[] = {
357 PCMCIA_DEVICE_PROD_ID12("AVM", "ISDN-Controller B1", 0x95d42008, 0x845dc335),
358 PCMCIA_DEVICE_PROD_ID12("AVM", "Mobile ISDN-Controller M1", 0x95d42008, 0x81e10430),
359 PCMCIA_DEVICE_PROD_ID12("AVM", "Mobile ISDN-Controller M2", 0x95d42008, 0x18e8558a),
362 MODULE_DEVICE_TABLE(pcmcia, avmcs_ids);
364 static struct pcmcia_driver avmcs_driver = {
365 .owner = THIS_MODULE,
369 .probe = avmcs_probe,
370 .remove = avmcs_detach,
371 .id_table = avmcs_ids,
374 static int __init avmcs_init(void)
376 return pcmcia_register_driver(&avmcs_driver);
379 static void __exit avmcs_exit(void)
381 pcmcia_unregister_driver(&avmcs_driver);
384 module_init(avmcs_init);
385 module_exit(avmcs_exit);