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 /* General socket configuration */
111 p_dev->conf.Attributes = CONF_ENABLE_IRQ;
112 p_dev->conf.IntType = INT_MEMORY_AND_IO;
113 p_dev->conf.ConfigIndex = 1;
114 p_dev->conf.Present = PRESENT_OPTION;
116 /* Allocate space for private device-specific data */
117 local = kzalloc(sizeof(local_info_t), GFP_KERNEL);
122 return avmcs_config(p_dev);
128 /*======================================================================
130 This deletes a driver "instance". The device is de-registered
131 with Card Services. If it has been released, all local data
132 structures are freed. Otherwise, the structures will be freed
133 when the device is released.
135 ======================================================================*/
137 static void avmcs_detach(struct pcmcia_device *link)
143 /*======================================================================
145 avmcs_config() is scheduled to run after a CARD_INSERTION event
146 is received, to configure the PCMCIA socket, and to make the
147 ethernet device available to the system.
149 ======================================================================*/
151 static int avmcs_configcheck(struct pcmcia_device *p_dev,
152 cistpl_cftable_entry_t *cf,
153 cistpl_cftable_entry_t *dflt,
157 if (cf->io.nwin <= 0)
160 p_dev->io.BasePort1 = cf->io.win[0].base;
161 p_dev->io.NumPorts1 = cf->io.win[0].len;
162 p_dev->io.NumPorts2 = 0;
163 printk(KERN_INFO "avm_cs: testing i/o %#x-%#x\n",
165 p_dev->io.BasePort1+p_dev->io.NumPorts1-1);
166 return pcmcia_request_io(p_dev, &p_dev->io);
169 static int avmcs_config(struct pcmcia_device *link)
175 int (*addcard)(unsigned int port, unsigned irq);
180 if (link->prod_id[1])
181 strlcpy(devname, link->prod_id[1], sizeof(devname));
186 if (pcmcia_loop_config(link, avmcs_configcheck, NULL))
192 pcmcia_disable_device(link);
197 * configure the PCMCIA socket
199 i = pcmcia_request_configuration(link, &link->conf);
201 pcmcia_disable_device(link);
207 /* At this point, the dev_node_t structure(s) should be
208 initialized and arranged in a linked list at link->dev. */
211 char *s = strrchr(devname, ' ');
215 strcpy(dev->node.dev_name, s);
216 if (strcmp("M1", s) == 0) {
217 cardtype = AVM_CARDTYPE_M1;
218 } else if (strcmp("M2", s) == 0) {
219 cardtype = AVM_CARDTYPE_M2;
221 cardtype = AVM_CARDTYPE_B1;
224 strcpy(dev->node.dev_name, "b1");
225 cardtype = AVM_CARDTYPE_B1;
228 dev->node.major = 64;
230 link->dev_node = &dev->node;
232 /* If any step failed, release any partially configured state */
240 case AVM_CARDTYPE_M1: addcard = b1pcmcia_addcard_m1; break;
241 case AVM_CARDTYPE_M2: addcard = b1pcmcia_addcard_m2; break;
243 case AVM_CARDTYPE_B1: addcard = b1pcmcia_addcard_b1; break;
245 if ((i = (*addcard)(link->io.BasePort1, link->irq)) < 0) {
246 printk(KERN_ERR "avm_cs: failed to add AVM-%s-Controller at i/o %#x, irq %d\n",
247 dev->node.dev_name, link->io.BasePort1, link->irq);
256 /*======================================================================
258 After a card is removed, avmcs_release() will unregister the net
259 device, and release the PCMCIA configuration. If the device is
260 still open, this will be postponed until it is closed.
262 ======================================================================*/
264 static void avmcs_release(struct pcmcia_device *link)
266 b1pcmcia_delcard(link->io.BasePort1, link->irq);
267 pcmcia_disable_device(link);
268 } /* avmcs_release */
271 static struct pcmcia_device_id avmcs_ids[] = {
272 PCMCIA_DEVICE_PROD_ID12("AVM", "ISDN-Controller B1", 0x95d42008, 0x845dc335),
273 PCMCIA_DEVICE_PROD_ID12("AVM", "Mobile ISDN-Controller M1", 0x95d42008, 0x81e10430),
274 PCMCIA_DEVICE_PROD_ID12("AVM", "Mobile ISDN-Controller M2", 0x95d42008, 0x18e8558a),
277 MODULE_DEVICE_TABLE(pcmcia, avmcs_ids);
279 static struct pcmcia_driver avmcs_driver = {
280 .owner = THIS_MODULE,
284 .probe = avmcs_probe,
285 .remove = avmcs_detach,
286 .id_table = avmcs_ids,
289 static int __init avmcs_init(void)
291 return pcmcia_register_driver(&avmcs_driver);
294 static void __exit avmcs_exit(void)
296 pcmcia_unregister_driver(&avmcs_driver);
299 module_init(avmcs_init);
300 module_exit(avmcs_exit);