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 void 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_attach(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 avma1cs_config(p_dev);
156 } /* avma1cs_attach */
158 /*======================================================================
160 This deletes a driver "instance". The device is de-registered
161 with Card Services. If it has been released, all local data
162 structures are freed. Otherwise, the structures will be freed
163 when the device is released.
165 ======================================================================*/
167 static void avma1cs_detach(struct pcmcia_device *link)
169 DEBUG(0, "avma1cs_detach(0x%p)\n", link);
171 if (link->state & DEV_CONFIG)
172 avma1cs_release(link);
175 } /* avma1cs_detach */
177 /*======================================================================
179 avma1cs_config() is scheduled to run after a CARD_INSERTION event
180 is received, to configure the PCMCIA socket, and to make the
181 ethernet device available to the system.
183 ======================================================================*/
185 static int get_tuple(struct pcmcia_device *handle, tuple_t *tuple,
188 int i = pcmcia_get_tuple_data(handle, tuple);
189 if (i != CS_SUCCESS) return i;
190 return pcmcia_parse_tuple(handle, tuple, parse);
193 static int first_tuple(struct pcmcia_device *handle, tuple_t *tuple,
196 int i = pcmcia_get_first_tuple(handle, tuple);
197 if (i != CS_SUCCESS) return i;
198 return get_tuple(handle, tuple, parse);
201 static int next_tuple(struct pcmcia_device *handle, tuple_t *tuple,
204 int i = pcmcia_get_next_tuple(handle, tuple);
205 if (i != CS_SUCCESS) return i;
206 return get_tuple(handle, tuple, parse);
209 static void avma1cs_config(struct pcmcia_device *link)
213 cistpl_cftable_entry_t *cf = &parse.cftable_entry;
223 DEBUG(0, "avma1cs_config(0x%p)\n", link);
226 This reads the card's CONFIG tuple to find its configuration
230 tuple.DesiredTuple = CISTPL_CONFIG;
231 i = pcmcia_get_first_tuple(link, &tuple);
232 if (i != CS_SUCCESS) break;
233 tuple.TupleData = buf;
234 tuple.TupleDataMax = 64;
235 tuple.TupleOffset = 0;
236 i = pcmcia_get_tuple_data(link, &tuple);
237 if (i != CS_SUCCESS) break;
238 i = pcmcia_parse_tuple(link, &tuple, &parse);
239 if (i != CS_SUCCESS) break;
240 link->conf.ConfigBase = parse.config.base;
242 if (i != CS_SUCCESS) {
243 cs_error(link, ParseTuple, i);
244 link->state &= ~DEV_CONFIG_PENDING;
249 link->state |= DEV_CONFIG;
253 tuple.Attributes = 0;
254 tuple.TupleData = buf;
255 tuple.TupleDataMax = 254;
256 tuple.TupleOffset = 0;
257 tuple.DesiredTuple = CISTPL_VERS_1;
260 if( !first_tuple(link, &tuple, &parse) && parse.version_1.ns > 1 ) {
261 strlcpy(devname,parse.version_1.str + parse.version_1.ofs[1],
267 tuple.TupleData = (cisdata_t *)buf;
268 tuple.TupleOffset = 0; tuple.TupleDataMax = 255;
269 tuple.Attributes = 0;
270 tuple.DesiredTuple = CISTPL_CFTABLE_ENTRY;
271 i = first_tuple(link, &tuple, &parse);
272 while (i == CS_SUCCESS) {
273 if (cf->io.nwin > 0) {
274 link->conf.ConfigIndex = cf->index;
275 link->io.BasePort1 = cf->io.win[0].base;
276 link->io.NumPorts1 = cf->io.win[0].len;
277 link->io.NumPorts2 = 0;
278 printk(KERN_INFO "avma1_cs: testing i/o %#x-%#x\n",
280 link->io.BasePort1+link->io.NumPorts1 - 1);
281 i = pcmcia_request_io(link, &link->io);
282 if (i == CS_SUCCESS) goto found_port;
284 i = next_tuple(link, &tuple, &parse);
288 if (i != CS_SUCCESS) {
289 cs_error(link, RequestIO, i);
294 * allocate an interrupt line
296 i = pcmcia_request_irq(link, &link->irq);
297 if (i != CS_SUCCESS) {
298 cs_error(link, RequestIRQ, i);
300 pcmcia_disable_device(link);
305 * configure the PCMCIA socket
307 i = pcmcia_request_configuration(link, &link->conf);
308 if (i != CS_SUCCESS) {
309 cs_error(link, RequestConfiguration, i);
310 pcmcia_disable_device(link);
316 /* At this point, the dev_node_t structure(s) should be
317 initialized and arranged in a linked list at link->dev. */
319 strcpy(dev->node.dev_name, "A1");
320 dev->node.major = 45;
322 link->dev_node = &dev->node;
324 link->state &= ~DEV_CONFIG_PENDING;
325 /* If any step failed, release any partially configured state */
327 avma1cs_release(link);
331 printk(KERN_NOTICE "avma1_cs: checking at i/o %#x, irq %d\n",
332 link->io.BasePort1, link->irq.AssignedIRQ);
334 icard.para[0] = link->irq.AssignedIRQ;
335 icard.para[1] = link->io.BasePort1;
336 icard.protocol = isdnprot;
337 icard.typ = ISDN_CTYPE_A1_PCMCIA;
339 i = hisax_init_pcmcia(link, &busy, &icard);
341 printk(KERN_ERR "avma1_cs: failed to initialize AVM A1 PCMCIA %d at i/o %#x\n", i, link->io.BasePort1);
342 avma1cs_release(link);
347 } /* avma1cs_config */
349 /*======================================================================
351 After a card is removed, avma1cs_release() will unregister the net
352 device, and release the PCMCIA configuration. If the device is
353 still open, this will be postponed until it is closed.
355 ======================================================================*/
357 static void avma1cs_release(struct pcmcia_device *link)
359 local_info_t *local = link->priv;
361 DEBUG(0, "avma1cs_release(0x%p)\n", link);
363 /* now unregister function with hisax */
364 HiSax_closecard(local->node.minor);
366 pcmcia_disable_device(link);
367 } /* avma1cs_release */
370 static struct pcmcia_device_id avma1cs_ids[] = {
371 PCMCIA_DEVICE_PROD_ID12("AVM", "ISDN A", 0x95d42008, 0xadc9d4bb),
372 PCMCIA_DEVICE_PROD_ID12("ISDN", "CARD", 0x8d9761c8, 0x01c5aa7b),
375 MODULE_DEVICE_TABLE(pcmcia, avma1cs_ids);
377 static struct pcmcia_driver avma1cs_driver = {
378 .owner = THIS_MODULE,
382 .probe = avma1cs_attach,
383 .remove = avma1cs_detach,
384 .id_table = avma1cs_ids,
387 /*====================================================================*/
389 static int __init init_avma1_cs(void)
391 return(pcmcia_register_driver(&avma1cs_driver));
394 static void __exit exit_avma1_cs(void)
396 pcmcia_unregister_driver(&avma1cs_driver);
399 module_init(init_avma1_cs);
400 module_exit(exit_avma1_cs);