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(dev_link_t *link);
55 static void avmcs_release(dev_link_t *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 dev_link_t 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 dev_link_t 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 dev_link_t
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 *p_dev)
150 dev_link_t *link = dev_to_instance(p_dev);
152 if (link->state & DEV_CONFIG)
158 /*======================================================================
160 avmcs_config() is scheduled to run after a CARD_INSERTION event
161 is received, to configure the PCMCIA socket, and to make the
162 ethernet device available to the system.
164 ======================================================================*/
166 static int get_tuple(client_handle_t handle, tuple_t *tuple,
169 int i = pcmcia_get_tuple_data(handle, tuple);
170 if (i != CS_SUCCESS) return i;
171 return pcmcia_parse_tuple(handle, tuple, parse);
174 static int first_tuple(client_handle_t handle, tuple_t *tuple,
177 int i = pcmcia_get_first_tuple(handle, tuple);
178 if (i != CS_SUCCESS) return i;
179 return get_tuple(handle, tuple, parse);
182 static int next_tuple(client_handle_t handle, tuple_t *tuple,
185 int i = pcmcia_get_next_tuple(handle, tuple);
186 if (i != CS_SUCCESS) return i;
187 return get_tuple(handle, tuple, parse);
190 static void avmcs_config(dev_link_t *link)
192 client_handle_t handle;
195 cistpl_cftable_entry_t *cf = &parse.cftable_entry;
201 int (*addcard)(unsigned int port, unsigned irq);
203 handle = link->handle;
207 This reads the card's CONFIG tuple to find its configuration
211 tuple.DesiredTuple = CISTPL_CONFIG;
212 i = pcmcia_get_first_tuple(handle, &tuple);
213 if (i != CS_SUCCESS) break;
214 tuple.TupleData = buf;
215 tuple.TupleDataMax = 64;
216 tuple.TupleOffset = 0;
217 i = pcmcia_get_tuple_data(handle, &tuple);
218 if (i != CS_SUCCESS) break;
219 i = pcmcia_parse_tuple(handle, &tuple, &parse);
220 if (i != CS_SUCCESS) break;
221 link->conf.ConfigBase = parse.config.base;
223 if (i != CS_SUCCESS) {
224 cs_error(link->handle, ParseTuple, i);
225 link->state &= ~DEV_CONFIG_PENDING;
230 link->state |= DEV_CONFIG;
234 tuple.Attributes = 0;
235 tuple.TupleData = buf;
236 tuple.TupleDataMax = 254;
237 tuple.TupleOffset = 0;
238 tuple.DesiredTuple = CISTPL_VERS_1;
241 if( !first_tuple(handle, &tuple, &parse) && parse.version_1.ns > 1 ) {
242 strlcpy(devname,parse.version_1.str + parse.version_1.ofs[1],
248 tuple.TupleData = (cisdata_t *)buf;
249 tuple.TupleOffset = 0; tuple.TupleDataMax = 255;
250 tuple.Attributes = 0;
251 tuple.DesiredTuple = CISTPL_CFTABLE_ENTRY;
252 i = first_tuple(handle, &tuple, &parse);
253 while (i == CS_SUCCESS) {
254 if (cf->io.nwin > 0) {
255 link->conf.ConfigIndex = cf->index;
256 link->io.BasePort1 = cf->io.win[0].base;
257 link->io.NumPorts1 = cf->io.win[0].len;
258 link->io.NumPorts2 = 0;
259 printk(KERN_INFO "avm_cs: testing i/o %#x-%#x\n",
261 link->io.BasePort1+link->io.NumPorts1-1);
262 i = pcmcia_request_io(link->handle, &link->io);
263 if (i == CS_SUCCESS) goto found_port;
265 i = next_tuple(handle, &tuple, &parse);
269 if (i != CS_SUCCESS) {
270 cs_error(link->handle, RequestIO, i);
275 * allocate an interrupt line
277 i = pcmcia_request_irq(link->handle, &link->irq);
278 if (i != CS_SUCCESS) {
279 cs_error(link->handle, RequestIRQ, i);
281 pcmcia_disable_device(link->handle);
286 * configure the PCMCIA socket
288 i = pcmcia_request_configuration(link->handle, &link->conf);
289 if (i != CS_SUCCESS) {
290 cs_error(link->handle, RequestConfiguration, i);
291 pcmcia_disable_device(link->handle);
297 /* At this point, the dev_node_t structure(s) should be
298 initialized and arranged in a linked list at link->dev. */
301 char *s = strrchr(devname, ' ');
305 strcpy(dev->node.dev_name, s);
306 if (strcmp("M1", s) == 0) {
307 cardtype = AVM_CARDTYPE_M1;
308 } else if (strcmp("M2", s) == 0) {
309 cardtype = AVM_CARDTYPE_M2;
311 cardtype = AVM_CARDTYPE_B1;
314 strcpy(dev->node.dev_name, "b1");
315 cardtype = AVM_CARDTYPE_B1;
318 dev->node.major = 64;
320 link->dev_node = &dev->node;
322 link->state &= ~DEV_CONFIG_PENDING;
323 /* If any step failed, release any partially configured state */
331 case AVM_CARDTYPE_M1: addcard = b1pcmcia_addcard_m1; break;
332 case AVM_CARDTYPE_M2: addcard = b1pcmcia_addcard_m2; break;
334 case AVM_CARDTYPE_B1: addcard = b1pcmcia_addcard_b1; break;
336 if ((i = (*addcard)(link->io.BasePort1, link->irq.AssignedIRQ)) < 0) {
337 printk(KERN_ERR "avm_cs: failed to add AVM-%s-Controller at i/o %#x, irq %d\n",
338 dev->node.dev_name, link->io.BasePort1, link->irq.AssignedIRQ);
346 /*======================================================================
348 After a card is removed, avmcs_release() will unregister the net
349 device, and release the PCMCIA configuration. If the device is
350 still open, this will be postponed until it is closed.
352 ======================================================================*/
354 static void avmcs_release(dev_link_t *link)
356 b1pcmcia_delcard(link->io.BasePort1, link->irq.AssignedIRQ);
357 pcmcia_disable_device(link->handle);
358 } /* avmcs_release */
361 static struct pcmcia_device_id avmcs_ids[] = {
362 PCMCIA_DEVICE_PROD_ID12("AVM", "ISDN-Controller B1", 0x95d42008, 0x845dc335),
363 PCMCIA_DEVICE_PROD_ID12("AVM", "Mobile ISDN-Controller M1", 0x95d42008, 0x81e10430),
364 PCMCIA_DEVICE_PROD_ID12("AVM", "Mobile ISDN-Controller M2", 0x95d42008, 0x18e8558a),
367 MODULE_DEVICE_TABLE(pcmcia, avmcs_ids);
369 static struct pcmcia_driver avmcs_driver = {
370 .owner = THIS_MODULE,
374 .probe = avmcs_attach,
375 .remove = avmcs_detach,
376 .id_table = avmcs_ids,
379 static int __init avmcs_init(void)
381 return pcmcia_register_driver(&avmcs_driver);
384 static void __exit avmcs_exit(void)
386 pcmcia_unregister_driver(&avmcs_driver);
389 module_init(avmcs_init);
390 module_exit(avmcs_exit);