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 return avma1cs_config(p_dev);
153 } /* avma1cs_attach */
155 /*======================================================================
157 This deletes a driver "instance". The device is de-registered
158 with Card Services. If it has been released, all local data
159 structures are freed. Otherwise, the structures will be freed
160 when the device is released.
162 ======================================================================*/
164 static void avma1cs_detach(struct pcmcia_device *link)
166 DEBUG(0, "avma1cs_detach(0x%p)\n", link);
167 avma1cs_release(link);
169 } /* avma1cs_detach */
171 /*======================================================================
173 avma1cs_config() is scheduled to run after a CARD_INSERTION event
174 is received, to configure the PCMCIA socket, and to make the
175 ethernet device available to the system.
177 ======================================================================*/
179 static int get_tuple(struct pcmcia_device *handle, tuple_t *tuple,
182 int i = pcmcia_get_tuple_data(handle, tuple);
183 if (i != CS_SUCCESS) return i;
184 return pcmcia_parse_tuple(handle, tuple, parse);
187 static int first_tuple(struct pcmcia_device *handle, tuple_t *tuple,
190 int i = pcmcia_get_first_tuple(handle, tuple);
191 if (i != CS_SUCCESS) return i;
192 return get_tuple(handle, tuple, parse);
195 static int next_tuple(struct pcmcia_device *handle, tuple_t *tuple,
198 int i = pcmcia_get_next_tuple(handle, tuple);
199 if (i != CS_SUCCESS) return i;
200 return get_tuple(handle, tuple, parse);
203 static int avma1cs_config(struct pcmcia_device *link)
207 cistpl_cftable_entry_t *cf = &parse.cftable_entry;
217 DEBUG(0, "avma1cs_config(0x%p)\n", link);
220 This reads the card's CONFIG tuple to find its configuration
224 tuple.DesiredTuple = CISTPL_CONFIG;
225 i = pcmcia_get_first_tuple(link, &tuple);
226 if (i != CS_SUCCESS) break;
227 tuple.TupleData = buf;
228 tuple.TupleDataMax = 64;
229 tuple.TupleOffset = 0;
230 i = pcmcia_get_tuple_data(link, &tuple);
231 if (i != CS_SUCCESS) break;
232 i = pcmcia_parse_tuple(link, &tuple, &parse);
233 if (i != CS_SUCCESS) break;
234 link->conf.ConfigBase = parse.config.base;
236 if (i != CS_SUCCESS) {
237 cs_error(link, ParseTuple, i);
243 if (link->prod_id[1])
244 strlcpy(devname, link->prod_id[1], sizeof(devname));
249 tuple.TupleData = (cisdata_t *)buf;
250 tuple.TupleOffset = 0; tuple.TupleDataMax = 255;
251 tuple.Attributes = 0;
252 tuple.DesiredTuple = CISTPL_CFTABLE_ENTRY;
253 i = first_tuple(link, &tuple, &parse);
254 while (i == CS_SUCCESS) {
255 if (cf->io.nwin > 0) {
256 link->conf.ConfigIndex = cf->index;
257 link->io.BasePort1 = cf->io.win[0].base;
258 link->io.NumPorts1 = cf->io.win[0].len;
259 link->io.NumPorts2 = 0;
260 printk(KERN_INFO "avma1_cs: testing i/o %#x-%#x\n",
262 link->io.BasePort1+link->io.NumPorts1 - 1);
263 i = pcmcia_request_io(link, &link->io);
264 if (i == CS_SUCCESS) goto found_port;
266 i = next_tuple(link, &tuple, &parse);
270 if (i != CS_SUCCESS) {
271 cs_error(link, RequestIO, i);
276 * allocate an interrupt line
278 i = pcmcia_request_irq(link, &link->irq);
279 if (i != CS_SUCCESS) {
280 cs_error(link, RequestIRQ, i);
282 pcmcia_disable_device(link);
287 * configure the PCMCIA socket
289 i = pcmcia_request_configuration(link, &link->conf);
290 if (i != CS_SUCCESS) {
291 cs_error(link, RequestConfiguration, i);
292 pcmcia_disable_device(link);
298 /* At this point, the dev_node_t structure(s) should be
299 initialized and arranged in a linked list at link->dev. */
301 strcpy(dev->node.dev_name, "A1");
302 dev->node.major = 45;
304 link->dev_node = &dev->node;
306 /* If any step failed, release any partially configured state */
308 avma1cs_release(link);
312 printk(KERN_NOTICE "avma1_cs: checking at i/o %#x, irq %d\n",
313 link->io.BasePort1, link->irq.AssignedIRQ);
315 icard.para[0] = link->irq.AssignedIRQ;
316 icard.para[1] = link->io.BasePort1;
317 icard.protocol = isdnprot;
318 icard.typ = ISDN_CTYPE_A1_PCMCIA;
320 i = hisax_init_pcmcia(link, &busy, &icard);
322 printk(KERN_ERR "avma1_cs: failed to initialize AVM A1 PCMCIA %d at i/o %#x\n", i, link->io.BasePort1);
323 avma1cs_release(link);
329 } /* avma1cs_config */
331 /*======================================================================
333 After a card is removed, avma1cs_release() will unregister the net
334 device, and release the PCMCIA configuration. If the device is
335 still open, this will be postponed until it is closed.
337 ======================================================================*/
339 static void avma1cs_release(struct pcmcia_device *link)
341 local_info_t *local = link->priv;
343 DEBUG(0, "avma1cs_release(0x%p)\n", link);
345 /* now unregister function with hisax */
346 HiSax_closecard(local->node.minor);
348 pcmcia_disable_device(link);
349 } /* avma1cs_release */
352 static struct pcmcia_device_id avma1cs_ids[] = {
353 PCMCIA_DEVICE_PROD_ID12("AVM", "ISDN A", 0x95d42008, 0xadc9d4bb),
354 PCMCIA_DEVICE_PROD_ID12("ISDN", "CARD", 0x8d9761c8, 0x01c5aa7b),
357 MODULE_DEVICE_TABLE(pcmcia, avma1cs_ids);
359 static struct pcmcia_driver avma1cs_driver = {
360 .owner = THIS_MODULE,
364 .probe = avma1cs_probe,
365 .remove = avma1cs_detach,
366 .id_table = avma1cs_ids,
369 /*====================================================================*/
371 static int __init init_avma1_cs(void)
373 return(pcmcia_register_driver(&avma1cs_driver));
376 static void __exit exit_avma1_cs(void)
378 pcmcia_unregister_driver(&avma1cs_driver);
381 module_init(init_avma1_cs);
382 module_exit(exit_avma1_cs);