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 return avmcs_config(p_dev);
136 /*======================================================================
138 This deletes a driver "instance". The device is de-registered
139 with Card Services. If it has been released, all local data
140 structures are freed. Otherwise, the structures will be freed
141 when the device is released.
143 ======================================================================*/
145 static void avmcs_detach(struct pcmcia_device *link)
151 /*======================================================================
153 avmcs_config() is scheduled to run after a CARD_INSERTION event
154 is received, to configure the PCMCIA socket, and to make the
155 ethernet device available to the system.
157 ======================================================================*/
159 static int get_tuple(struct pcmcia_device *handle, tuple_t *tuple,
162 int i = pcmcia_get_tuple_data(handle, tuple);
163 if (i != CS_SUCCESS) return i;
164 return pcmcia_parse_tuple(handle, tuple, parse);
167 static int first_tuple(struct pcmcia_device *handle, tuple_t *tuple,
170 int i = pcmcia_get_first_tuple(handle, tuple);
171 if (i != CS_SUCCESS) return i;
172 return get_tuple(handle, tuple, parse);
175 static int next_tuple(struct pcmcia_device *handle, tuple_t *tuple,
178 int i = pcmcia_get_next_tuple(handle, tuple);
179 if (i != CS_SUCCESS) return i;
180 return get_tuple(handle, tuple, parse);
183 static int avmcs_config(struct pcmcia_device *link)
187 cistpl_cftable_entry_t *cf = &parse.cftable_entry;
193 int (*addcard)(unsigned int port, unsigned irq);
198 This reads the card's CONFIG tuple to find its configuration
202 tuple.DesiredTuple = CISTPL_CONFIG;
203 i = pcmcia_get_first_tuple(link, &tuple);
204 if (i != CS_SUCCESS) break;
205 tuple.TupleData = buf;
206 tuple.TupleDataMax = 64;
207 tuple.TupleOffset = 0;
208 i = pcmcia_get_tuple_data(link, &tuple);
209 if (i != CS_SUCCESS) break;
210 i = pcmcia_parse_tuple(link, &tuple, &parse);
211 if (i != CS_SUCCESS) break;
212 link->conf.ConfigBase = parse.config.base;
214 if (i != CS_SUCCESS) {
215 cs_error(link, ParseTuple, i);
221 if (link->prod_id[1])
222 strlcpy(devname, link->prod_id[1], sizeof(devname));
227 tuple.TupleData = (cisdata_t *)buf;
228 tuple.TupleOffset = 0; tuple.TupleDataMax = 255;
229 tuple.Attributes = 0;
230 tuple.DesiredTuple = CISTPL_CFTABLE_ENTRY;
231 i = first_tuple(link, &tuple, &parse);
232 while (i == CS_SUCCESS) {
233 if (cf->io.nwin > 0) {
234 link->conf.ConfigIndex = cf->index;
235 link->io.BasePort1 = cf->io.win[0].base;
236 link->io.NumPorts1 = cf->io.win[0].len;
237 link->io.NumPorts2 = 0;
238 printk(KERN_INFO "avm_cs: testing i/o %#x-%#x\n",
240 link->io.BasePort1+link->io.NumPorts1-1);
241 i = pcmcia_request_io(link, &link->io);
242 if (i == CS_SUCCESS) goto found_port;
244 i = next_tuple(link, &tuple, &parse);
248 if (i != CS_SUCCESS) {
249 cs_error(link, RequestIO, i);
254 * allocate an interrupt line
256 i = pcmcia_request_irq(link, &link->irq);
257 if (i != CS_SUCCESS) {
258 cs_error(link, RequestIRQ, i);
260 pcmcia_disable_device(link);
265 * configure the PCMCIA socket
267 i = pcmcia_request_configuration(link, &link->conf);
268 if (i != CS_SUCCESS) {
269 cs_error(link, RequestConfiguration, i);
270 pcmcia_disable_device(link);
276 /* At this point, the dev_node_t structure(s) should be
277 initialized and arranged in a linked list at link->dev. */
280 char *s = strrchr(devname, ' ');
284 strcpy(dev->node.dev_name, s);
285 if (strcmp("M1", s) == 0) {
286 cardtype = AVM_CARDTYPE_M1;
287 } else if (strcmp("M2", s) == 0) {
288 cardtype = AVM_CARDTYPE_M2;
290 cardtype = AVM_CARDTYPE_B1;
293 strcpy(dev->node.dev_name, "b1");
294 cardtype = AVM_CARDTYPE_B1;
297 dev->node.major = 64;
299 link->dev_node = &dev->node;
301 /* If any step failed, release any partially configured state */
309 case AVM_CARDTYPE_M1: addcard = b1pcmcia_addcard_m1; break;
310 case AVM_CARDTYPE_M2: addcard = b1pcmcia_addcard_m2; break;
312 case AVM_CARDTYPE_B1: addcard = b1pcmcia_addcard_b1; break;
314 if ((i = (*addcard)(link->io.BasePort1, link->irq.AssignedIRQ)) < 0) {
315 printk(KERN_ERR "avm_cs: failed to add AVM-%s-Controller at i/o %#x, irq %d\n",
316 dev->node.dev_name, link->io.BasePort1, link->irq.AssignedIRQ);
325 /*======================================================================
327 After a card is removed, avmcs_release() will unregister the net
328 device, and release the PCMCIA configuration. If the device is
329 still open, this will be postponed until it is closed.
331 ======================================================================*/
333 static void avmcs_release(struct pcmcia_device *link)
335 b1pcmcia_delcard(link->io.BasePort1, link->irq.AssignedIRQ);
336 pcmcia_disable_device(link);
337 } /* avmcs_release */
340 static struct pcmcia_device_id avmcs_ids[] = {
341 PCMCIA_DEVICE_PROD_ID12("AVM", "ISDN-Controller B1", 0x95d42008, 0x845dc335),
342 PCMCIA_DEVICE_PROD_ID12("AVM", "Mobile ISDN-Controller M1", 0x95d42008, 0x81e10430),
343 PCMCIA_DEVICE_PROD_ID12("AVM", "Mobile ISDN-Controller M2", 0x95d42008, 0x18e8558a),
346 MODULE_DEVICE_TABLE(pcmcia, avmcs_ids);
348 static struct pcmcia_driver avmcs_driver = {
349 .owner = THIS_MODULE,
353 .probe = avmcs_probe,
354 .remove = avmcs_detach,
355 .id_table = avmcs_ids,
358 static int __init avmcs_init(void)
360 return pcmcia_register_driver(&avmcs_driver);
363 static void __exit avmcs_exit(void)
365 pcmcia_unregister_driver(&avmcs_driver);
368 module_init(avmcs_init);
369 module_exit(avmcs_exit);