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/ptrace.h>
16 #include <linux/slab.h>
17 #include <linux/string.h>
18 #include <linux/tty.h>
19 #include <linux/serial.h>
20 #include <linux/major.h>
22 #include <asm/system.h>
24 #include <pcmcia/cs_types.h>
25 #include <pcmcia/cs.h>
26 #include <pcmcia/cistpl.h>
27 #include <pcmcia/ciscode.h>
28 #include <pcmcia/ds.h>
29 #include <pcmcia/cisreg.h>
31 #include <linux/skbuff.h>
32 #include <linux/capi.h>
33 #include <linux/b1lli.h>
34 #include <linux/b1pcmcia.h>
36 /*====================================================================*/
38 MODULE_DESCRIPTION("CAPI4Linux: PCMCIA client driver for AVM B1/M1/M2");
39 MODULE_AUTHOR("Carsten Paeth");
40 MODULE_LICENSE("GPL");
42 /*====================================================================*/
45 The event() function is this driver's Card Services event handler.
46 It will be called by Card Services when an appropriate card status
47 event is received. The config() and release() entry points are
48 used to configure or release a socket, in response to card insertion
49 and ejection events. They are invoked from the skeleton event
53 static int avmcs_config(struct pcmcia_device *link);
54 static void avmcs_release(struct pcmcia_device *link);
57 The attach() and detach() entry points are used to create and destroy
58 "instances" of the driver, where each instance represents everything
59 needed to manage one actual PCMCIA card.
62 static void avmcs_detach(struct pcmcia_device *p_dev);
65 A linked list of "instances" of the skeleton device. Each actual
66 PCMCIA card corresponds to one device instance, and is described
67 by one struct pcmcia_device structure (defined in ds.h).
69 You may not want to use a linked list for this -- for example, the
70 memory card driver uses an array of struct pcmcia_device pointers, where minor
71 device numbers are used to derive the corresponding array index.
75 A driver needs to provide a dev_node_t structure for each device
76 on a card. In some cases, there is only one device per card (for
77 example, ethernet cards, modems). In other cases, there may be
78 many actual or logical devices (SCSI adapters, memory cards with
79 multiple partitions). The dev_node_t structures need to be kept
80 in a linked list starting at the 'dev' field of a struct pcmcia_device
81 structure. We allocate them in the card's private data structure,
82 because they generally can't be allocated dynamically.
85 typedef struct local_info_t {
89 /*======================================================================
91 avmcs_attach() creates an "instance" of the driver, allocating
92 local data structures for one device. The device is registered
95 The dev_link structure is initialized, but we don't actually
96 configure the card at this point -- we wait until we receive a
99 ======================================================================*/
101 static int avmcs_probe(struct pcmcia_device *p_dev)
105 /* The io structure describes IO port mapping */
106 p_dev->io.NumPorts1 = 16;
107 p_dev->io.Attributes1 = IO_DATA_PATH_WIDTH_8;
108 p_dev->io.NumPorts2 = 0;
110 /* Interrupt setup */
111 p_dev->irq.Attributes = IRQ_TYPE_EXCLUSIVE;
112 p_dev->irq.Attributes = IRQ_TYPE_DYNAMIC_SHARING|IRQ_FIRST_SHARED;
114 p_dev->irq.IRQInfo1 = IRQ_LEVEL_ID;
116 /* General socket configuration */
117 p_dev->conf.Attributes = CONF_ENABLE_IRQ;
118 p_dev->conf.IntType = INT_MEMORY_AND_IO;
119 p_dev->conf.ConfigIndex = 1;
120 p_dev->conf.Present = PRESENT_OPTION;
122 /* Allocate space for private device-specific data */
123 local = kzalloc(sizeof(local_info_t), GFP_KERNEL);
128 return avmcs_config(p_dev);
134 /*======================================================================
136 This deletes a driver "instance". The device is de-registered
137 with Card Services. If it has been released, all local data
138 structures are freed. Otherwise, the structures will be freed
139 when the device is released.
141 ======================================================================*/
143 static void avmcs_detach(struct pcmcia_device *link)
149 /*======================================================================
151 avmcs_config() is scheduled to run after a CARD_INSERTION event
152 is received, to configure the PCMCIA socket, and to make the
153 ethernet device available to the system.
155 ======================================================================*/
157 static int get_tuple(struct pcmcia_device *handle, tuple_t *tuple,
160 int i = pcmcia_get_tuple_data(handle, tuple);
161 if (i != CS_SUCCESS) return i;
162 return pcmcia_parse_tuple(handle, tuple, parse);
165 static int first_tuple(struct pcmcia_device *handle, tuple_t *tuple,
168 int i = pcmcia_get_first_tuple(handle, tuple);
169 if (i != CS_SUCCESS) return i;
170 return get_tuple(handle, tuple, parse);
173 static int next_tuple(struct pcmcia_device *handle, tuple_t *tuple,
176 int i = pcmcia_get_next_tuple(handle, tuple);
177 if (i != CS_SUCCESS) return i;
178 return get_tuple(handle, tuple, parse);
181 static int avmcs_config(struct pcmcia_device *link)
185 cistpl_cftable_entry_t *cf = &parse.cftable_entry;
191 int (*addcard)(unsigned int port, unsigned irq);
197 if (link->prod_id[1])
198 strlcpy(devname, link->prod_id[1], sizeof(devname));
203 tuple.TupleData = (cisdata_t *)buf;
204 tuple.TupleOffset = 0; tuple.TupleDataMax = 255;
205 tuple.Attributes = 0;
206 tuple.DesiredTuple = CISTPL_CFTABLE_ENTRY;
207 i = first_tuple(link, &tuple, &parse);
208 while (i == CS_SUCCESS) {
209 if (cf->io.nwin > 0) {
210 link->conf.ConfigIndex = cf->index;
211 link->io.BasePort1 = cf->io.win[0].base;
212 link->io.NumPorts1 = cf->io.win[0].len;
213 link->io.NumPorts2 = 0;
214 printk(KERN_INFO "avm_cs: testing i/o %#x-%#x\n",
216 link->io.BasePort1+link->io.NumPorts1-1);
217 i = pcmcia_request_io(link, &link->io);
218 if (i == CS_SUCCESS) goto found_port;
220 i = next_tuple(link, &tuple, &parse);
224 if (i != CS_SUCCESS) {
225 cs_error(link, RequestIO, i);
230 * allocate an interrupt line
232 i = pcmcia_request_irq(link, &link->irq);
233 if (i != CS_SUCCESS) {
234 cs_error(link, RequestIRQ, i);
236 pcmcia_disable_device(link);
241 * configure the PCMCIA socket
243 i = pcmcia_request_configuration(link, &link->conf);
244 if (i != CS_SUCCESS) {
245 cs_error(link, RequestConfiguration, i);
246 pcmcia_disable_device(link);
252 /* At this point, the dev_node_t structure(s) should be
253 initialized and arranged in a linked list at link->dev. */
256 char *s = strrchr(devname, ' ');
260 strcpy(dev->node.dev_name, s);
261 if (strcmp("M1", s) == 0) {
262 cardtype = AVM_CARDTYPE_M1;
263 } else if (strcmp("M2", s) == 0) {
264 cardtype = AVM_CARDTYPE_M2;
266 cardtype = AVM_CARDTYPE_B1;
269 strcpy(dev->node.dev_name, "b1");
270 cardtype = AVM_CARDTYPE_B1;
273 dev->node.major = 64;
275 link->dev_node = &dev->node;
277 /* If any step failed, release any partially configured state */
285 case AVM_CARDTYPE_M1: addcard = b1pcmcia_addcard_m1; break;
286 case AVM_CARDTYPE_M2: addcard = b1pcmcia_addcard_m2; break;
288 case AVM_CARDTYPE_B1: addcard = b1pcmcia_addcard_b1; break;
290 if ((i = (*addcard)(link->io.BasePort1, link->irq.AssignedIRQ)) < 0) {
291 printk(KERN_ERR "avm_cs: failed to add AVM-%s-Controller at i/o %#x, irq %d\n",
292 dev->node.dev_name, link->io.BasePort1, link->irq.AssignedIRQ);
301 /*======================================================================
303 After a card is removed, avmcs_release() will unregister the net
304 device, and release the PCMCIA configuration. If the device is
305 still open, this will be postponed until it is closed.
307 ======================================================================*/
309 static void avmcs_release(struct pcmcia_device *link)
311 b1pcmcia_delcard(link->io.BasePort1, link->irq.AssignedIRQ);
312 pcmcia_disable_device(link);
313 } /* avmcs_release */
316 static struct pcmcia_device_id avmcs_ids[] = {
317 PCMCIA_DEVICE_PROD_ID12("AVM", "ISDN-Controller B1", 0x95d42008, 0x845dc335),
318 PCMCIA_DEVICE_PROD_ID12("AVM", "Mobile ISDN-Controller M1", 0x95d42008, 0x81e10430),
319 PCMCIA_DEVICE_PROD_ID12("AVM", "Mobile ISDN-Controller M2", 0x95d42008, 0x18e8558a),
322 MODULE_DEVICE_TABLE(pcmcia, avmcs_ids);
324 static struct pcmcia_driver avmcs_driver = {
325 .owner = THIS_MODULE,
329 .probe = avmcs_probe,
330 .remove = avmcs_detach,
331 .id_table = avmcs_ids,
334 static int __init avmcs_init(void)
336 return pcmcia_register_driver(&avmcs_driver);
339 static void __exit avmcs_exit(void)
341 pcmcia_unregister_driver(&avmcs_driver);
344 module_init(avmcs_init);
345 module_exit(avmcs_exit);