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);
199 if (link->prod_id[1])
200 strlcpy(devname, link->prod_id[1], sizeof(devname));
205 tuple.TupleData = (cisdata_t *)buf;
206 tuple.TupleOffset = 0; tuple.TupleDataMax = 255;
207 tuple.Attributes = 0;
208 tuple.DesiredTuple = CISTPL_CFTABLE_ENTRY;
209 i = first_tuple(link, &tuple, &parse);
210 while (i == CS_SUCCESS) {
211 if (cf->io.nwin > 0) {
212 link->conf.ConfigIndex = cf->index;
213 link->io.BasePort1 = cf->io.win[0].base;
214 link->io.NumPorts1 = cf->io.win[0].len;
215 link->io.NumPorts2 = 0;
216 printk(KERN_INFO "avm_cs: testing i/o %#x-%#x\n",
218 link->io.BasePort1+link->io.NumPorts1-1);
219 i = pcmcia_request_io(link, &link->io);
220 if (i == CS_SUCCESS) goto found_port;
222 i = next_tuple(link, &tuple, &parse);
226 if (i != CS_SUCCESS) {
227 cs_error(link, RequestIO, i);
232 * allocate an interrupt line
234 i = pcmcia_request_irq(link, &link->irq);
235 if (i != CS_SUCCESS) {
236 cs_error(link, RequestIRQ, i);
238 pcmcia_disable_device(link);
243 * configure the PCMCIA socket
245 i = pcmcia_request_configuration(link, &link->conf);
246 if (i != CS_SUCCESS) {
247 cs_error(link, RequestConfiguration, i);
248 pcmcia_disable_device(link);
254 /* At this point, the dev_node_t structure(s) should be
255 initialized and arranged in a linked list at link->dev. */
258 char *s = strrchr(devname, ' ');
262 strcpy(dev->node.dev_name, s);
263 if (strcmp("M1", s) == 0) {
264 cardtype = AVM_CARDTYPE_M1;
265 } else if (strcmp("M2", s) == 0) {
266 cardtype = AVM_CARDTYPE_M2;
268 cardtype = AVM_CARDTYPE_B1;
271 strcpy(dev->node.dev_name, "b1");
272 cardtype = AVM_CARDTYPE_B1;
275 dev->node.major = 64;
277 link->dev_node = &dev->node;
279 /* If any step failed, release any partially configured state */
287 case AVM_CARDTYPE_M1: addcard = b1pcmcia_addcard_m1; break;
288 case AVM_CARDTYPE_M2: addcard = b1pcmcia_addcard_m2; break;
290 case AVM_CARDTYPE_B1: addcard = b1pcmcia_addcard_b1; break;
292 if ((i = (*addcard)(link->io.BasePort1, link->irq.AssignedIRQ)) < 0) {
293 printk(KERN_ERR "avm_cs: failed to add AVM-%s-Controller at i/o %#x, irq %d\n",
294 dev->node.dev_name, link->io.BasePort1, link->irq.AssignedIRQ);
303 /*======================================================================
305 After a card is removed, avmcs_release() will unregister the net
306 device, and release the PCMCIA configuration. If the device is
307 still open, this will be postponed until it is closed.
309 ======================================================================*/
311 static void avmcs_release(struct pcmcia_device *link)
313 b1pcmcia_delcard(link->io.BasePort1, link->irq.AssignedIRQ);
314 pcmcia_disable_device(link);
315 } /* avmcs_release */
318 static struct pcmcia_device_id avmcs_ids[] = {
319 PCMCIA_DEVICE_PROD_ID12("AVM", "ISDN-Controller B1", 0x95d42008, 0x845dc335),
320 PCMCIA_DEVICE_PROD_ID12("AVM", "Mobile ISDN-Controller M1", 0x95d42008, 0x81e10430),
321 PCMCIA_DEVICE_PROD_ID12("AVM", "Mobile ISDN-Controller M2", 0x95d42008, 0x18e8558a),
324 MODULE_DEVICE_TABLE(pcmcia, avmcs_ids);
326 static struct pcmcia_driver avmcs_driver = {
327 .owner = THIS_MODULE,
331 .probe = avmcs_probe,
332 .remove = avmcs_detach,
333 .id_table = avmcs_ids,
336 static int __init avmcs_init(void)
338 return pcmcia_register_driver(&avmcs_driver);
341 static void __exit avmcs_exit(void)
343 pcmcia_unregister_driver(&avmcs_driver);
346 module_init(avmcs_init);
347 module_exit(avmcs_exit);