2 * PCMCIA client driver for AVM A1 / Fritz!PCMCIA
5 * Copyright 1998-2001 by Carsten Paeth <calle@calle.in-berlin.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>
15 #include <linux/kernel.h>
16 #include <linux/init.h>
17 #include <linux/sched.h>
18 #include <linux/ptrace.h>
19 #include <linux/slab.h>
20 #include <linux/string.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/ds.h>
28 #include "hisax_cfg.h"
30 MODULE_DESCRIPTION("ISDN4Linux: PCMCIA client driver for AVM A1/Fritz!PCMCIA cards");
31 MODULE_AUTHOR("Carsten Paeth");
32 MODULE_LICENSE("GPL");
35 All the PCMCIA modules use PCMCIA_DEBUG to control debugging. If
36 you do not define PCMCIA_DEBUG at all, all the debug code will be
37 left out. If you compile with PCMCIA_DEBUG=0, the debug code will
38 be present but disabled -- but it can then be enabled for specific
39 modules at load time with a 'pc_debug=#' option to insmod.
42 static int pc_debug = PCMCIA_DEBUG;
43 module_param(pc_debug, int, 0);
44 #define DEBUG(n, args...) if (pc_debug>(n)) printk(KERN_DEBUG args);
45 static char *version =
46 "avma1_cs.c 1.00 1998/01/23 10:00:00 (Carsten Paeth)";
48 #define DEBUG(n, args...)
51 /*====================================================================*/
53 /* Parameters that can be set with 'insmod' */
55 static int isdnprot = 2;
57 module_param(isdnprot, int, 0);
59 /*====================================================================*/
62 The event() function is this driver's Card Services event handler.
63 It will be called by Card Services when an appropriate card status
64 event is received. The config() and release() entry points are
65 used to configure or release a socket, in response to card insertion
66 and ejection events. They are invoked from the skeleton event
70 static int avma1cs_config(struct pcmcia_device *link);
71 static void avma1cs_release(struct pcmcia_device *link);
74 The attach() and detach() entry points are used to create and destroy
75 "instances" of the driver, where each instance represents everything
76 needed to manage one actual PCMCIA card.
79 static void avma1cs_detach(struct pcmcia_device *p_dev);
83 A linked list of "instances" of the skeleton device. Each actual
84 PCMCIA card corresponds to one device instance, and is described
85 by one struct pcmcia_device structure (defined in ds.h).
87 You may not want to use a linked list for this -- for example, the
88 memory card driver uses an array of struct pcmcia_device pointers, where minor
89 device numbers are used to derive the corresponding array index.
93 A driver needs to provide a dev_node_t structure for each device
94 on a card. In some cases, there is only one device per card (for
95 example, ethernet cards, modems). In other cases, there may be
96 many actual or logical devices (SCSI adapters, memory cards with
97 multiple partitions). The dev_node_t structures need to be kept
98 in a linked list starting at the 'dev' field of a struct pcmcia_device
99 structure. We allocate them in the card's private data structure,
100 because they generally can't be allocated dynamically.
103 typedef struct local_info_t {
107 /*======================================================================
109 avma1cs_attach() creates an "instance" of the driver, allocating
110 local data structures for one device. The device is registered
113 The dev_link structure is initialized, but we don't actually
114 configure the card at this point -- we wait until we receive a
115 card insertion event.
117 ======================================================================*/
119 static int avma1cs_probe(struct pcmcia_device *p_dev)
123 DEBUG(0, "avma1cs_attach()\n");
125 /* Allocate space for private device-specific data */
126 local = kmalloc(sizeof(local_info_t), GFP_KERNEL);
130 memset(local, 0, sizeof(local_info_t));
133 /* The io structure describes IO port mapping */
134 p_dev->io.NumPorts1 = 16;
135 p_dev->io.Attributes1 = IO_DATA_PATH_WIDTH_8;
136 p_dev->io.NumPorts2 = 16;
137 p_dev->io.Attributes2 = IO_DATA_PATH_WIDTH_16;
138 p_dev->io.IOAddrLines = 5;
140 /* Interrupt setup */
141 p_dev->irq.Attributes = IRQ_TYPE_EXCLUSIVE;
142 p_dev->irq.Attributes = IRQ_TYPE_DYNAMIC_SHARING|IRQ_FIRST_SHARED;
144 p_dev->irq.IRQInfo1 = IRQ_LEVEL_ID;
146 /* General socket configuration */
147 p_dev->conf.Attributes = CONF_ENABLE_IRQ;
148 p_dev->conf.IntType = INT_MEMORY_AND_IO;
149 p_dev->conf.ConfigIndex = 1;
150 p_dev->conf.Present = PRESENT_OPTION;
152 p_dev->state |= DEV_PRESENT | DEV_CONFIG_PENDING;
153 return avma1cs_config(p_dev);
154 } /* avma1cs_attach */
156 /*======================================================================
158 This deletes a driver "instance". The device is de-registered
159 with Card Services. If it has been released, all local data
160 structures are freed. Otherwise, the structures will be freed
161 when the device is released.
163 ======================================================================*/
165 static void avma1cs_detach(struct pcmcia_device *link)
167 DEBUG(0, "avma1cs_detach(0x%p)\n", link);
169 if (link->state & DEV_CONFIG)
170 avma1cs_release(link);
173 } /* avma1cs_detach */
175 /*======================================================================
177 avma1cs_config() is scheduled to run after a CARD_INSERTION event
178 is received, to configure the PCMCIA socket, and to make the
179 ethernet device available to the system.
181 ======================================================================*/
183 static int get_tuple(struct pcmcia_device *handle, tuple_t *tuple,
186 int i = pcmcia_get_tuple_data(handle, tuple);
187 if (i != CS_SUCCESS) return i;
188 return pcmcia_parse_tuple(handle, tuple, parse);
191 static int first_tuple(struct pcmcia_device *handle, tuple_t *tuple,
194 int i = pcmcia_get_first_tuple(handle, tuple);
195 if (i != CS_SUCCESS) return i;
196 return get_tuple(handle, tuple, parse);
199 static int next_tuple(struct pcmcia_device *handle, tuple_t *tuple,
202 int i = pcmcia_get_next_tuple(handle, tuple);
203 if (i != CS_SUCCESS) return i;
204 return get_tuple(handle, tuple, parse);
207 static int avma1cs_config(struct pcmcia_device *link)
211 cistpl_cftable_entry_t *cf = &parse.cftable_entry;
221 DEBUG(0, "avma1cs_config(0x%p)\n", link);
224 This reads the card's CONFIG tuple to find its configuration
228 tuple.DesiredTuple = CISTPL_CONFIG;
229 i = pcmcia_get_first_tuple(link, &tuple);
230 if (i != CS_SUCCESS) break;
231 tuple.TupleData = buf;
232 tuple.TupleDataMax = 64;
233 tuple.TupleOffset = 0;
234 i = pcmcia_get_tuple_data(link, &tuple);
235 if (i != CS_SUCCESS) break;
236 i = pcmcia_parse_tuple(link, &tuple, &parse);
237 if (i != CS_SUCCESS) break;
238 link->conf.ConfigBase = parse.config.base;
240 if (i != CS_SUCCESS) {
241 cs_error(link, ParseTuple, i);
242 link->state &= ~DEV_CONFIG_PENDING;
247 link->state |= DEV_CONFIG;
251 tuple.Attributes = 0;
252 tuple.TupleData = buf;
253 tuple.TupleDataMax = 254;
254 tuple.TupleOffset = 0;
255 tuple.DesiredTuple = CISTPL_VERS_1;
258 if( !first_tuple(link, &tuple, &parse) && parse.version_1.ns > 1 ) {
259 strlcpy(devname,parse.version_1.str + parse.version_1.ofs[1],
265 tuple.TupleData = (cisdata_t *)buf;
266 tuple.TupleOffset = 0; tuple.TupleDataMax = 255;
267 tuple.Attributes = 0;
268 tuple.DesiredTuple = CISTPL_CFTABLE_ENTRY;
269 i = first_tuple(link, &tuple, &parse);
270 while (i == CS_SUCCESS) {
271 if (cf->io.nwin > 0) {
272 link->conf.ConfigIndex = cf->index;
273 link->io.BasePort1 = cf->io.win[0].base;
274 link->io.NumPorts1 = cf->io.win[0].len;
275 link->io.NumPorts2 = 0;
276 printk(KERN_INFO "avma1_cs: testing i/o %#x-%#x\n",
278 link->io.BasePort1+link->io.NumPorts1 - 1);
279 i = pcmcia_request_io(link, &link->io);
280 if (i == CS_SUCCESS) goto found_port;
282 i = next_tuple(link, &tuple, &parse);
286 if (i != CS_SUCCESS) {
287 cs_error(link, RequestIO, i);
292 * allocate an interrupt line
294 i = pcmcia_request_irq(link, &link->irq);
295 if (i != CS_SUCCESS) {
296 cs_error(link, RequestIRQ, i);
298 pcmcia_disable_device(link);
303 * configure the PCMCIA socket
305 i = pcmcia_request_configuration(link, &link->conf);
306 if (i != CS_SUCCESS) {
307 cs_error(link, RequestConfiguration, i);
308 pcmcia_disable_device(link);
314 /* At this point, the dev_node_t structure(s) should be
315 initialized and arranged in a linked list at link->dev. */
317 strcpy(dev->node.dev_name, "A1");
318 dev->node.major = 45;
320 link->dev_node = &dev->node;
322 link->state &= ~DEV_CONFIG_PENDING;
323 /* If any step failed, release any partially configured state */
325 avma1cs_release(link);
329 printk(KERN_NOTICE "avma1_cs: checking at i/o %#x, irq %d\n",
330 link->io.BasePort1, link->irq.AssignedIRQ);
332 icard.para[0] = link->irq.AssignedIRQ;
333 icard.para[1] = link->io.BasePort1;
334 icard.protocol = isdnprot;
335 icard.typ = ISDN_CTYPE_A1_PCMCIA;
337 i = hisax_init_pcmcia(link, &busy, &icard);
339 printk(KERN_ERR "avma1_cs: failed to initialize AVM A1 PCMCIA %d at i/o %#x\n", i, link->io.BasePort1);
340 avma1cs_release(link);
346 } /* avma1cs_config */
348 /*======================================================================
350 After a card is removed, avma1cs_release() will unregister the net
351 device, and release the PCMCIA configuration. If the device is
352 still open, this will be postponed until it is closed.
354 ======================================================================*/
356 static void avma1cs_release(struct pcmcia_device *link)
358 local_info_t *local = link->priv;
360 DEBUG(0, "avma1cs_release(0x%p)\n", link);
362 /* now unregister function with hisax */
363 HiSax_closecard(local->node.minor);
365 pcmcia_disable_device(link);
366 } /* avma1cs_release */
369 static struct pcmcia_device_id avma1cs_ids[] = {
370 PCMCIA_DEVICE_PROD_ID12("AVM", "ISDN A", 0x95d42008, 0xadc9d4bb),
371 PCMCIA_DEVICE_PROD_ID12("ISDN", "CARD", 0x8d9761c8, 0x01c5aa7b),
374 MODULE_DEVICE_TABLE(pcmcia, avma1cs_ids);
376 static struct pcmcia_driver avma1cs_driver = {
377 .owner = THIS_MODULE,
381 .probe = avma1cs_probe,
382 .remove = avma1cs_detach,
383 .id_table = avma1cs_ids,
386 /*====================================================================*/
388 static int __init init_avma1_cs(void)
390 return(pcmcia_register_driver(&avma1cs_driver));
393 static void __exit exit_avma1_cs(void)
395 pcmcia_unregister_driver(&avma1cs_driver);
398 module_init(init_avma1_cs);
399 module_exit(exit_avma1_cs);