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 avmcs_configcheck(struct pcmcia_device *p_dev,
158 cistpl_cftable_entry_t *cf,
159 cistpl_cftable_entry_t *dflt,
163 if (cf->io.nwin <= 0)
166 p_dev->io.BasePort1 = cf->io.win[0].base;
167 p_dev->io.NumPorts1 = cf->io.win[0].len;
168 p_dev->io.NumPorts2 = 0;
169 printk(KERN_INFO "avm_cs: testing i/o %#x-%#x\n",
171 p_dev->io.BasePort1+p_dev->io.NumPorts1-1);
172 return pcmcia_request_io(p_dev, &p_dev->io);
175 static int avmcs_config(struct pcmcia_device *link)
181 int (*addcard)(unsigned int port, unsigned irq);
186 if (link->prod_id[1])
187 strlcpy(devname, link->prod_id[1], sizeof(devname));
192 if (pcmcia_loop_config(link, avmcs_configcheck, NULL))
197 * allocate an interrupt line
199 i = pcmcia_request_irq(link, &link->irq);
201 cs_error(link, RequestIRQ, i);
203 pcmcia_disable_device(link);
208 * configure the PCMCIA socket
210 i = pcmcia_request_configuration(link, &link->conf);
212 cs_error(link, RequestConfiguration, i);
213 pcmcia_disable_device(link);
219 /* At this point, the dev_node_t structure(s) should be
220 initialized and arranged in a linked list at link->dev. */
223 char *s = strrchr(devname, ' ');
227 strcpy(dev->node.dev_name, s);
228 if (strcmp("M1", s) == 0) {
229 cardtype = AVM_CARDTYPE_M1;
230 } else if (strcmp("M2", s) == 0) {
231 cardtype = AVM_CARDTYPE_M2;
233 cardtype = AVM_CARDTYPE_B1;
236 strcpy(dev->node.dev_name, "b1");
237 cardtype = AVM_CARDTYPE_B1;
240 dev->node.major = 64;
242 link->dev_node = &dev->node;
244 /* If any step failed, release any partially configured state */
252 case AVM_CARDTYPE_M1: addcard = b1pcmcia_addcard_m1; break;
253 case AVM_CARDTYPE_M2: addcard = b1pcmcia_addcard_m2; break;
255 case AVM_CARDTYPE_B1: addcard = b1pcmcia_addcard_b1; break;
257 if ((i = (*addcard)(link->io.BasePort1, link->irq.AssignedIRQ)) < 0) {
258 printk(KERN_ERR "avm_cs: failed to add AVM-%s-Controller at i/o %#x, irq %d\n",
259 dev->node.dev_name, link->io.BasePort1, link->irq.AssignedIRQ);
268 /*======================================================================
270 After a card is removed, avmcs_release() will unregister the net
271 device, and release the PCMCIA configuration. If the device is
272 still open, this will be postponed until it is closed.
274 ======================================================================*/
276 static void avmcs_release(struct pcmcia_device *link)
278 b1pcmcia_delcard(link->io.BasePort1, link->irq.AssignedIRQ);
279 pcmcia_disable_device(link);
280 } /* avmcs_release */
283 static struct pcmcia_device_id avmcs_ids[] = {
284 PCMCIA_DEVICE_PROD_ID12("AVM", "ISDN-Controller B1", 0x95d42008, 0x845dc335),
285 PCMCIA_DEVICE_PROD_ID12("AVM", "Mobile ISDN-Controller M1", 0x95d42008, 0x81e10430),
286 PCMCIA_DEVICE_PROD_ID12("AVM", "Mobile ISDN-Controller M2", 0x95d42008, 0x18e8558a),
289 MODULE_DEVICE_TABLE(pcmcia, avmcs_ids);
291 static struct pcmcia_driver avmcs_driver = {
292 .owner = THIS_MODULE,
296 .probe = avmcs_probe,
297 .remove = avmcs_detach,
298 .id_table = avmcs_ids,
301 static int __init avmcs_init(void)
303 return pcmcia_register_driver(&avmcs_driver);
306 static void __exit avmcs_exit(void)
308 pcmcia_unregister_driver(&avmcs_driver);
311 module_init(avmcs_init);
312 module_exit(avmcs_exit);