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(dev_link_t *link);
71 static void avma1cs_release(dev_link_t *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 dev_link_t 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 dev_link_t 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 dev_link_t
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)
124 DEBUG(0, "avma1cs_attach()\n");
126 /* Initialize the dev_link_t structure */
127 link = kmalloc(sizeof(struct dev_link_t), GFP_KERNEL);
130 memset(link, 0, sizeof(struct dev_link_t));
132 /* Allocate space for private device-specific data */
133 local = kmalloc(sizeof(local_info_t), GFP_KERNEL);
138 memset(local, 0, sizeof(local_info_t));
141 /* The io structure describes IO port mapping */
142 link->io.NumPorts1 = 16;
143 link->io.Attributes1 = IO_DATA_PATH_WIDTH_8;
144 link->io.NumPorts2 = 16;
145 link->io.Attributes2 = IO_DATA_PATH_WIDTH_16;
146 link->io.IOAddrLines = 5;
148 /* Interrupt setup */
149 link->irq.Attributes = IRQ_TYPE_EXCLUSIVE;
150 link->irq.Attributes = IRQ_TYPE_DYNAMIC_SHARING|IRQ_FIRST_SHARED;
152 link->irq.IRQInfo1 = IRQ_LEVEL_ID;
154 /* General socket configuration */
155 link->conf.Attributes = CONF_ENABLE_IRQ;
156 link->conf.IntType = INT_MEMORY_AND_IO;
157 link->conf.ConfigIndex = 1;
158 link->conf.Present = PRESENT_OPTION;
160 link->handle = p_dev;
161 p_dev->instance = link;
163 link->state |= DEV_PRESENT | DEV_CONFIG_PENDING;
164 avma1cs_config(link);
167 } /* avma1cs_attach */
169 /*======================================================================
171 This deletes a driver "instance". The device is de-registered
172 with Card Services. If it has been released, all local data
173 structures are freed. Otherwise, the structures will be freed
174 when the device is released.
176 ======================================================================*/
178 static void avma1cs_detach(struct pcmcia_device *p_dev)
180 dev_link_t *link = dev_to_instance(p_dev);
182 DEBUG(0, "avma1cs_detach(0x%p)\n", link);
184 if (link->state & DEV_CONFIG)
185 avma1cs_release(link);
189 } /* avma1cs_detach */
191 /*======================================================================
193 avma1cs_config() is scheduled to run after a CARD_INSERTION event
194 is received, to configure the PCMCIA socket, and to make the
195 ethernet device available to the system.
197 ======================================================================*/
199 static int get_tuple(client_handle_t handle, tuple_t *tuple,
202 int i = pcmcia_get_tuple_data(handle, tuple);
203 if (i != CS_SUCCESS) return i;
204 return pcmcia_parse_tuple(handle, tuple, parse);
207 static int first_tuple(client_handle_t handle, tuple_t *tuple,
210 int i = pcmcia_get_first_tuple(handle, tuple);
211 if (i != CS_SUCCESS) return i;
212 return get_tuple(handle, tuple, parse);
215 static int next_tuple(client_handle_t handle, tuple_t *tuple,
218 int i = pcmcia_get_next_tuple(handle, tuple);
219 if (i != CS_SUCCESS) return i;
220 return get_tuple(handle, tuple, parse);
223 static void avma1cs_config(dev_link_t *link)
225 client_handle_t handle;
228 cistpl_cftable_entry_t *cf = &parse.cftable_entry;
236 handle = link->handle;
239 DEBUG(0, "avma1cs_config(0x%p)\n", link);
242 This reads the card's CONFIG tuple to find its configuration
246 tuple.DesiredTuple = CISTPL_CONFIG;
247 i = pcmcia_get_first_tuple(handle, &tuple);
248 if (i != CS_SUCCESS) break;
249 tuple.TupleData = buf;
250 tuple.TupleDataMax = 64;
251 tuple.TupleOffset = 0;
252 i = pcmcia_get_tuple_data(handle, &tuple);
253 if (i != CS_SUCCESS) break;
254 i = pcmcia_parse_tuple(handle, &tuple, &parse);
255 if (i != CS_SUCCESS) break;
256 link->conf.ConfigBase = parse.config.base;
258 if (i != CS_SUCCESS) {
259 cs_error(link->handle, ParseTuple, i);
260 link->state &= ~DEV_CONFIG_PENDING;
265 link->state |= DEV_CONFIG;
269 tuple.Attributes = 0;
270 tuple.TupleData = buf;
271 tuple.TupleDataMax = 254;
272 tuple.TupleOffset = 0;
273 tuple.DesiredTuple = CISTPL_VERS_1;
276 if( !first_tuple(handle, &tuple, &parse) && parse.version_1.ns > 1 ) {
277 strlcpy(devname,parse.version_1.str + parse.version_1.ofs[1],
283 tuple.TupleData = (cisdata_t *)buf;
284 tuple.TupleOffset = 0; tuple.TupleDataMax = 255;
285 tuple.Attributes = 0;
286 tuple.DesiredTuple = CISTPL_CFTABLE_ENTRY;
287 i = first_tuple(handle, &tuple, &parse);
288 while (i == CS_SUCCESS) {
289 if (cf->io.nwin > 0) {
290 link->conf.ConfigIndex = cf->index;
291 link->io.BasePort1 = cf->io.win[0].base;
292 link->io.NumPorts1 = cf->io.win[0].len;
293 link->io.NumPorts2 = 0;
294 printk(KERN_INFO "avma1_cs: testing i/o %#x-%#x\n",
296 link->io.BasePort1+link->io.NumPorts1 - 1);
297 i = pcmcia_request_io(link->handle, &link->io);
298 if (i == CS_SUCCESS) goto found_port;
300 i = next_tuple(handle, &tuple, &parse);
304 if (i != CS_SUCCESS) {
305 cs_error(link->handle, RequestIO, i);
310 * allocate an interrupt line
312 i = pcmcia_request_irq(link->handle, &link->irq);
313 if (i != CS_SUCCESS) {
314 cs_error(link->handle, RequestIRQ, i);
316 pcmcia_disable_device(link->handle);
321 * configure the PCMCIA socket
323 i = pcmcia_request_configuration(link->handle, &link->conf);
324 if (i != CS_SUCCESS) {
325 cs_error(link->handle, RequestConfiguration, i);
326 pcmcia_disable_device(link->handle);
332 /* At this point, the dev_node_t structure(s) should be
333 initialized and arranged in a linked list at link->dev. */
335 strcpy(dev->node.dev_name, "A1");
336 dev->node.major = 45;
338 link->dev = &dev->node;
340 link->state &= ~DEV_CONFIG_PENDING;
341 /* If any step failed, release any partially configured state */
343 avma1cs_release(link);
347 printk(KERN_NOTICE "avma1_cs: checking at i/o %#x, irq %d\n",
348 link->io.BasePort1, link->irq.AssignedIRQ);
350 icard.para[0] = link->irq.AssignedIRQ;
351 icard.para[1] = link->io.BasePort1;
352 icard.protocol = isdnprot;
353 icard.typ = ISDN_CTYPE_A1_PCMCIA;
355 i = hisax_init_pcmcia(link, &busy, &icard);
357 printk(KERN_ERR "avma1_cs: failed to initialize AVM A1 PCMCIA %d at i/o %#x\n", i, link->io.BasePort1);
358 avma1cs_release(link);
363 } /* avma1cs_config */
365 /*======================================================================
367 After a card is removed, avma1cs_release() will unregister the net
368 device, and release the PCMCIA configuration. If the device is
369 still open, this will be postponed until it is closed.
371 ======================================================================*/
373 static void avma1cs_release(dev_link_t *link)
375 local_info_t *local = link->priv;
377 DEBUG(0, "avma1cs_release(0x%p)\n", link);
379 /* now unregister function with hisax */
380 HiSax_closecard(local->node.minor);
382 pcmcia_disable_device(link->handle);
383 } /* avma1cs_release */
386 static struct pcmcia_device_id avma1cs_ids[] = {
387 PCMCIA_DEVICE_PROD_ID12("AVM", "ISDN A", 0x95d42008, 0xadc9d4bb),
388 PCMCIA_DEVICE_PROD_ID12("ISDN", "CARD", 0x8d9761c8, 0x01c5aa7b),
391 MODULE_DEVICE_TABLE(pcmcia, avma1cs_ids);
393 static struct pcmcia_driver avma1cs_driver = {
394 .owner = THIS_MODULE,
398 .probe = avma1cs_attach,
399 .remove = avma1cs_detach,
400 .id_table = avma1cs_ids,
403 /*====================================================================*/
405 static int __init init_avma1_cs(void)
407 return(pcmcia_register_driver(&avma1cs_driver));
410 static void __exit exit_avma1_cs(void)
412 pcmcia_unregister_driver(&avma1cs_driver);
415 module_init(init_avma1_cs);
416 module_exit(exit_avma1_cs);