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 /* General socket configuration */
115 p_dev->conf.Attributes = CONF_ENABLE_IRQ;
116 p_dev->conf.IntType = INT_MEMORY_AND_IO;
117 p_dev->conf.ConfigIndex = 1;
118 p_dev->conf.Present = PRESENT_OPTION;
120 /* Allocate space for private device-specific data */
121 local = kzalloc(sizeof(local_info_t), GFP_KERNEL);
126 return avmcs_config(p_dev);
132 /*======================================================================
134 This deletes a driver "instance". The device is de-registered
135 with Card Services. If it has been released, all local data
136 structures are freed. Otherwise, the structures will be freed
137 when the device is released.
139 ======================================================================*/
141 static void avmcs_detach(struct pcmcia_device *link)
147 /*======================================================================
149 avmcs_config() is scheduled to run after a CARD_INSERTION event
150 is received, to configure the PCMCIA socket, and to make the
151 ethernet device available to the system.
153 ======================================================================*/
155 static int avmcs_configcheck(struct pcmcia_device *p_dev,
156 cistpl_cftable_entry_t *cf,
157 cistpl_cftable_entry_t *dflt,
161 if (cf->io.nwin <= 0)
164 p_dev->io.BasePort1 = cf->io.win[0].base;
165 p_dev->io.NumPorts1 = cf->io.win[0].len;
166 p_dev->io.NumPorts2 = 0;
167 printk(KERN_INFO "avm_cs: testing i/o %#x-%#x\n",
169 p_dev->io.BasePort1+p_dev->io.NumPorts1-1);
170 return pcmcia_request_io(p_dev, &p_dev->io);
173 static int avmcs_config(struct pcmcia_device *link)
179 int (*addcard)(unsigned int port, unsigned irq);
184 if (link->prod_id[1])
185 strlcpy(devname, link->prod_id[1], sizeof(devname));
190 if (pcmcia_loop_config(link, avmcs_configcheck, NULL))
195 * allocate an interrupt line
197 i = pcmcia_request_irq(link, &link->irq);
200 pcmcia_disable_device(link);
205 * configure the PCMCIA socket
207 i = pcmcia_request_configuration(link, &link->conf);
209 pcmcia_disable_device(link);
215 /* At this point, the dev_node_t structure(s) should be
216 initialized and arranged in a linked list at link->dev. */
219 char *s = strrchr(devname, ' ');
223 strcpy(dev->node.dev_name, s);
224 if (strcmp("M1", s) == 0) {
225 cardtype = AVM_CARDTYPE_M1;
226 } else if (strcmp("M2", s) == 0) {
227 cardtype = AVM_CARDTYPE_M2;
229 cardtype = AVM_CARDTYPE_B1;
232 strcpy(dev->node.dev_name, "b1");
233 cardtype = AVM_CARDTYPE_B1;
236 dev->node.major = 64;
238 link->dev_node = &dev->node;
240 /* If any step failed, release any partially configured state */
248 case AVM_CARDTYPE_M1: addcard = b1pcmcia_addcard_m1; break;
249 case AVM_CARDTYPE_M2: addcard = b1pcmcia_addcard_m2; break;
251 case AVM_CARDTYPE_B1: addcard = b1pcmcia_addcard_b1; break;
253 if ((i = (*addcard)(link->io.BasePort1, link->irq.AssignedIRQ)) < 0) {
254 printk(KERN_ERR "avm_cs: failed to add AVM-%s-Controller at i/o %#x, irq %d\n",
255 dev->node.dev_name, link->io.BasePort1, link->irq.AssignedIRQ);
264 /*======================================================================
266 After a card is removed, avmcs_release() will unregister the net
267 device, and release the PCMCIA configuration. If the device is
268 still open, this will be postponed until it is closed.
270 ======================================================================*/
272 static void avmcs_release(struct pcmcia_device *link)
274 b1pcmcia_delcard(link->io.BasePort1, link->irq.AssignedIRQ);
275 pcmcia_disable_device(link);
276 } /* avmcs_release */
279 static struct pcmcia_device_id avmcs_ids[] = {
280 PCMCIA_DEVICE_PROD_ID12("AVM", "ISDN-Controller B1", 0x95d42008, 0x845dc335),
281 PCMCIA_DEVICE_PROD_ID12("AVM", "Mobile ISDN-Controller M1", 0x95d42008, 0x81e10430),
282 PCMCIA_DEVICE_PROD_ID12("AVM", "Mobile ISDN-Controller M2", 0x95d42008, 0x18e8558a),
285 MODULE_DEVICE_TABLE(pcmcia, avmcs_ids);
287 static struct pcmcia_driver avmcs_driver = {
288 .owner = THIS_MODULE,
292 .probe = avmcs_probe,
293 .remove = avmcs_detach,
294 .id_table = avmcs_ids,
297 static int __init avmcs_init(void)
299 return pcmcia_register_driver(&avmcs_driver);
302 static void __exit avmcs_exit(void)
304 pcmcia_unregister_driver(&avmcs_driver);
307 module_init(avmcs_init);
308 module_exit(avmcs_exit);