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 = kzalloc(sizeof(local_info_t), GFP_KERNEL);
129 return avmcs_config(p_dev);
135 /*======================================================================
137 This deletes a driver "instance". The device is de-registered
138 with Card Services. If it has been released, all local data
139 structures are freed. Otherwise, the structures will be freed
140 when the device is released.
142 ======================================================================*/
144 static void avmcs_detach(struct pcmcia_device *link)
150 /*======================================================================
152 avmcs_config() is scheduled to run after a CARD_INSERTION event
153 is received, to configure the PCMCIA socket, and to make the
154 ethernet device available to the system.
156 ======================================================================*/
158 static int get_tuple(struct pcmcia_device *handle, tuple_t *tuple,
161 int i = pcmcia_get_tuple_data(handle, tuple);
162 if (i != CS_SUCCESS) return i;
163 return pcmcia_parse_tuple(handle, tuple, parse);
166 static int first_tuple(struct pcmcia_device *handle, tuple_t *tuple,
169 int i = pcmcia_get_first_tuple(handle, tuple);
170 if (i != CS_SUCCESS) return i;
171 return get_tuple(handle, tuple, parse);
174 static int next_tuple(struct pcmcia_device *handle, tuple_t *tuple,
177 int i = pcmcia_get_next_tuple(handle, tuple);
178 if (i != CS_SUCCESS) return i;
179 return get_tuple(handle, tuple, parse);
182 static int avmcs_config(struct pcmcia_device *link)
186 cistpl_cftable_entry_t *cf = &parse.cftable_entry;
192 int (*addcard)(unsigned int port, unsigned irq);
198 if (link->prod_id[1])
199 strlcpy(devname, link->prod_id[1], sizeof(devname));
204 tuple.TupleData = (cisdata_t *)buf;
205 tuple.TupleOffset = 0; tuple.TupleDataMax = 255;
206 tuple.Attributes = 0;
207 tuple.DesiredTuple = CISTPL_CFTABLE_ENTRY;
208 i = first_tuple(link, &tuple, &parse);
209 while (i == CS_SUCCESS) {
210 if (cf->io.nwin > 0) {
211 link->conf.ConfigIndex = cf->index;
212 link->io.BasePort1 = cf->io.win[0].base;
213 link->io.NumPorts1 = cf->io.win[0].len;
214 link->io.NumPorts2 = 0;
215 printk(KERN_INFO "avm_cs: testing i/o %#x-%#x\n",
217 link->io.BasePort1+link->io.NumPorts1-1);
218 i = pcmcia_request_io(link, &link->io);
219 if (i == CS_SUCCESS) goto found_port;
221 i = next_tuple(link, &tuple, &parse);
225 if (i != CS_SUCCESS) {
226 cs_error(link, RequestIO, i);
231 * allocate an interrupt line
233 i = pcmcia_request_irq(link, &link->irq);
234 if (i != CS_SUCCESS) {
235 cs_error(link, RequestIRQ, i);
237 pcmcia_disable_device(link);
242 * configure the PCMCIA socket
244 i = pcmcia_request_configuration(link, &link->conf);
245 if (i != CS_SUCCESS) {
246 cs_error(link, RequestConfiguration, i);
247 pcmcia_disable_device(link);
253 /* At this point, the dev_node_t structure(s) should be
254 initialized and arranged in a linked list at link->dev. */
257 char *s = strrchr(devname, ' ');
261 strcpy(dev->node.dev_name, s);
262 if (strcmp("M1", s) == 0) {
263 cardtype = AVM_CARDTYPE_M1;
264 } else if (strcmp("M2", s) == 0) {
265 cardtype = AVM_CARDTYPE_M2;
267 cardtype = AVM_CARDTYPE_B1;
270 strcpy(dev->node.dev_name, "b1");
271 cardtype = AVM_CARDTYPE_B1;
274 dev->node.major = 64;
276 link->dev_node = &dev->node;
278 /* If any step failed, release any partially configured state */
286 case AVM_CARDTYPE_M1: addcard = b1pcmcia_addcard_m1; break;
287 case AVM_CARDTYPE_M2: addcard = b1pcmcia_addcard_m2; break;
289 case AVM_CARDTYPE_B1: addcard = b1pcmcia_addcard_b1; break;
291 if ((i = (*addcard)(link->io.BasePort1, link->irq.AssignedIRQ)) < 0) {
292 printk(KERN_ERR "avm_cs: failed to add AVM-%s-Controller at i/o %#x, irq %d\n",
293 dev->node.dev_name, link->io.BasePort1, link->irq.AssignedIRQ);
302 /*======================================================================
304 After a card is removed, avmcs_release() will unregister the net
305 device, and release the PCMCIA configuration. If the device is
306 still open, this will be postponed until it is closed.
308 ======================================================================*/
310 static void avmcs_release(struct pcmcia_device *link)
312 b1pcmcia_delcard(link->io.BasePort1, link->irq.AssignedIRQ);
313 pcmcia_disable_device(link);
314 } /* avmcs_release */
317 static struct pcmcia_device_id avmcs_ids[] = {
318 PCMCIA_DEVICE_PROD_ID12("AVM", "ISDN-Controller B1", 0x95d42008, 0x845dc335),
319 PCMCIA_DEVICE_PROD_ID12("AVM", "Mobile ISDN-Controller M1", 0x95d42008, 0x81e10430),
320 PCMCIA_DEVICE_PROD_ID12("AVM", "Mobile ISDN-Controller M2", 0x95d42008, 0x18e8558a),
323 MODULE_DEVICE_TABLE(pcmcia, avmcs_ids);
325 static struct pcmcia_driver avmcs_driver = {
326 .owner = THIS_MODULE,
330 .probe = avmcs_probe,
331 .remove = avmcs_detach,
332 .id_table = avmcs_ids,
335 static int __init avmcs_init(void)
337 return pcmcia_register_driver(&avmcs_driver);
340 static void __exit avmcs_exit(void)
342 pcmcia_unregister_driver(&avmcs_driver);
345 module_init(avmcs_init);
346 module_exit(avmcs_exit);