1 /*
2 * PCMCIA client driver for AVM A1 / Fritz!PCMCIA
3 *
4 * Author Carsten Paeth
5 * Copyright 1998-2001 by Carsten Paeth <calle@calle.in-berlin.de>
6 *
7 * This software may be used and distributed according to the terms
8 * of the GNU General Public License, incorporated herein by reference.
9 *
10 */
11
12 #include <linux/module.h>
13
14
15 #include <linux/kernel.h>
16 #include <linux/init.h>
17 #include <linux/ptrace.h>
18 #include <linux/slab.h>
19 #include <linux/string.h>
20 #include <asm/io.h>
21 #include <asm/system.h>
22
23 #include <pcmcia/cs_types.h>
24 #include <pcmcia/cs.h>
25 #include <pcmcia/cistpl.h>
26 #include <pcmcia/ds.h>
27 #include "hisax_cfg.h"
28
29 MODULE_DESCRIPTION("ISDN4Linux: PCMCIA client driver for AVM A1/Fritz!PCMCIA cards");
30 MODULE_AUTHOR("Carsten Paeth");
31 MODULE_LICENSE("GPL");
32
33 /*
34 All the PCMCIA modules use PCMCIA_DEBUG to control debugging. If
35 you do not define PCMCIA_DEBUG at all, all the debug code will be
36 left out. If you compile with PCMCIA_DEBUG=0, the debug code will
37 be present but disabled -- but it can then be enabled for specific
38 modules at load time with a 'pc_debug=#' option to insmod.
39 */
40 #ifdef PCMCIA_DEBUG
41 static int pc_debug = PCMCIA_DEBUG;
42 module_param(pc_debug, int, 0);
43 #define DEBUG(n, args...) if (pc_debug>(n)) printk(KERN_DEBUG args);
44 static char *version =
45 "avma1_cs.c 1.00 1998/01/23 10:00:00 (Carsten Paeth)";
46 #else
47 #define DEBUG(n, args...)
48 #endif
49
50 /*====================================================================*/
51
52 /* Parameters that can be set with 'insmod' */
53
54 static int isdnprot = 2;
55
56 module_param(isdnprot, int, 0);
57
58 /*====================================================================*/
59
60 /*
61 The event() function is this driver's Card Services event handler.
62 It will be called by Card Services when an appropriate card status
63 event is received. The config() and release() entry points are
64 used to configure or release a socket, in response to card insertion
65 and ejection events. They are invoked from the skeleton event
66 handler.
67 */
68
69 static int avma1cs_config(struct pcmcia_device *link);
70 static void avma1cs_release(struct pcmcia_device *link);
71
72 /*
73 The attach() and detach() entry points are used to create and destroy
74 "instances" of the driver, where each instance represents everything
75 needed to manage one actual PCMCIA card.
76 */
77
78 static void avma1cs_detach(struct pcmcia_device *p_dev);
79
80
81 /*
82 A linked list of "instances" of the skeleton device. Each actual
83 PCMCIA card corresponds to one device instance, and is described
84 by one struct pcmcia_device structure (defined in ds.h).
85
86 You may not want to use a linked list for this -- for example, the
87 memory card driver uses an array of struct pcmcia_device pointers, where minor
88 device numbers are used to derive the corresponding array index.
89 */
90
91 /*
92 A driver needs to provide a dev_node_t structure for each device
93 on a card. In some cases, there is only one device per card (for
94 example, ethernet cards, modems). In other cases, there may be
95 many actual or logical devices (SCSI adapters, memory cards with
96 multiple partitions). The dev_node_t structures need to be kept
97 in a linked list starting at the 'dev' field of a struct pcmcia_device
98 structure. We allocate them in the card's private data structure,
99 because they generally can't be allocated dynamically.
100 */
101
102 typedef struct local_info_t {
103 dev_node_t node;
104 } local_info_t;
105
106 /*======================================================================
107
108 avma1cs_attach() creates an "instance" of the driver, allocating
109 local data structures for one device. The device is registered
110 with Card Services.
111
112 The dev_link structure is initialized, but we don't actually
113 configure the card at this point -- we wait until we receive a
114 card insertion event.
115
116 ======================================================================*/
117
118 static int avma1cs_probe(struct pcmcia_device *p_dev)
119 {
120 local_info_t *local;
121
122 DEBUG(0, "avma1cs_attach()\n");
123
124 /* Allocate space for private device-specific data */
125 local = kzalloc(sizeof(local_info_t), GFP_KERNEL);
126 if (!local)
127 return -ENOMEM;
128
129 p_dev->priv = local;
130
131 /* The io structure describes IO port mapping */
132 p_dev->io.NumPorts1 = 16;
133 p_dev->io.Attributes1 = IO_DATA_PATH_WIDTH_8;
134 p_dev->io.NumPorts2 = 16;
135 p_dev->io.Attributes2 = IO_DATA_PATH_WIDTH_16;
136 p_dev->io.IOAddrLines = 5;
137
138 /* Interrupt setup */
139 p_dev->irq.Attributes = IRQ_TYPE_EXCLUSIVE;
140 p_dev->irq.Attributes = IRQ_TYPE_DYNAMIC_SHARING|IRQ_FIRST_SHARED;
141
142 p_dev->irq.IRQInfo1 = IRQ_LEVEL_ID;
143
144 /* General socket configuration */
145 p_dev->conf.Attributes = CONF_ENABLE_IRQ;
146 p_dev->conf.IntType = INT_MEMORY_AND_IO;
147 p_dev->conf.ConfigIndex = 1;
148 p_dev->conf.Present = PRESENT_OPTION;
149
150 return avma1cs_config(p_dev);
151 } /* avma1cs_attach */
152
153 /*======================================================================
154
155 This deletes a driver "instance". The device is de-registered
156 with Card Services. If it has been released, all local data
157 structures are freed. Otherwise, the structures will be freed
158 when the device is released.
159
160 ======================================================================*/
161
162 static void avma1cs_detach(struct pcmcia_device *link)
163 {
164 DEBUG(0, "avma1cs_detach(0x%p)\n", link);
165 avma1cs_release(link);
166 kfree(link->priv);
167 } /* avma1cs_detach */
168
169 /*======================================================================
170
171 avma1cs_config() is scheduled to run after a CARD_INSERTION event
172 is received, to configure the PCMCIA socket, and to make the
173 ethernet device available to the system.
174
175 ======================================================================*/
176
177 static int get_tuple(struct pcmcia_device *handle, tuple_t *tuple,
178 cisparse_t *parse)
179 {
180 int i = pcmcia_get_tuple_data(handle, tuple);
181 if (i != CS_SUCCESS) return i;
182 return pcmcia_parse_tuple(handle, tuple, parse);
183 }
184
185 static int first_tuple(struct pcmcia_device *handle, tuple_t *tuple,
186 cisparse_t *parse)
187 {
188 int i = pcmcia_get_first_tuple(handle, tuple);
189 if (i != CS_SUCCESS) return i;
190 return get_tuple(handle, tuple, parse);
191 }
192
193 static int next_tuple(struct pcmcia_device *handle, tuple_t *tuple,
194 cisparse_t *parse)
195 {
196 int i = pcmcia_get_next_tuple(handle, tuple);
197 if (i != CS_SUCCESS) return i;
198 return get_tuple(handle, tuple, parse);
199 }
200
201 static int avma1cs_config(struct pcmcia_device *link)
202 {
203 tuple_t tuple;
204 cisparse_t parse;
205 cistpl_cftable_entry_t *cf = &parse.cftable_entry;
206 local_info_t *dev;
207 int i;
208 u_char buf[64];
209 char devname[128];
210 IsdnCard_t icard;
211 int busy = 0;
212
213 dev = link->priv;
214
215 DEBUG(0, "avma1cs_config(0x%p)\n", link);
216
217 do {
218 devname[0] = 0;
219 if (link->prod_id[1])
220 strlcpy(devname, link->prod_id[1], sizeof(devname));
221
222 /*
223 * find IO port
224 */
225 tuple.TupleData = (cisdata_t *)buf;
226 tuple.TupleOffset = 0; tuple.TupleDataMax = 255;
227 tuple.Attributes = 0;
228 tuple.DesiredTuple = CISTPL_CFTABLE_ENTRY;
229 i = first_tuple(link, &tuple, &parse);
230 while (i == CS_SUCCESS) {
231 if (cf->io.nwin > 0) {
232 link->conf.ConfigIndex = cf->index;
233 link->io.BasePort1 = cf->io.win[0].base;
234 link->io.NumPorts1 = cf->io.win[0].len;
235 link->io.NumPorts2 = 0;
236 printk(KERN_INFO "avma1_cs: testing i/o %#x-%#x\n",
237 link->io.BasePort1,
238 link->io.BasePort1+link->io.NumPorts1 - 1);
239 i = pcmcia_request_io(link, &link->io);
240 if (i == CS_SUCCESS) goto found_port;
241 }
242 i = next_tuple(link, &tuple, &parse);
243 }
244
245 found_port:
246 if (i != CS_SUCCESS) {
247 cs_error(link, RequestIO, i);
248 break;
249 }
250
251 /*
252 * allocate an interrupt line
253 */
254 i = pcmcia_request_irq(link, &link->irq);
255 if (i != CS_SUCCESS) {
256 cs_error(link, RequestIRQ, i);
257 /* undo */
258 pcmcia_disable_device(link);
259 break;
260 }
261
262 /*
263 * configure the PCMCIA socket
264 */
265 i = pcmcia_request_configuration(link, &link->conf);
266 if (i != CS_SUCCESS) {
267 cs_error(link, RequestConfiguration, i);
268 pcmcia_disable_device(link);
269 break;
270 }
271
272 } while (0);
273
274 /* At this point, the dev_node_t structure(s) should be
275 initialized and arranged in a linked list at link->dev. */
276
277 strcpy(dev->node.dev_name, "A1");
278 dev->node.major = 45;
279 dev->node.minor = 0;
280 link->dev_node = &dev->node;
281
282 /* If any step failed, release any partially configured state */
283 if (i != 0) {
284 avma1cs_release(link);
285 return -ENODEV;
286 }
287
288 printk(KERN_NOTICE "avma1_cs: checking at i/o %#x, irq %d\n",
289 link->io.BasePort1, link->irq.AssignedIRQ);
290
291 icard.para[0] = link->irq.AssignedIRQ;
292 icard.para[1] = link->io.BasePort1;
293 icard.protocol = isdnprot;
294 icard.typ = ISDN_CTYPE_A1_PCMCIA;
295
296 i = hisax_init_pcmcia(link, &busy, &icard);
297 if (i < 0) {
298 printk(KERN_ERR "avma1_cs: failed to initialize AVM A1 PCMCIA %d at i/o %#x\n", i, link->io.BasePort1);
299 avma1cs_release(link);
300 return -ENODEV;
301 }
302 dev->node.minor = i;
303
304 return 0;
305 } /* avma1cs_config */
306
307 /*======================================================================
308
309 After a card is removed, avma1cs_release() will unregister the net
310 device, and release the PCMCIA configuration. If the device is
311 still open, this will be postponed until it is closed.
312
313 ======================================================================*/
314
315 static void avma1cs_release(struct pcmcia_device *link)
316 {
317 local_info_t *local = link->priv;
318
319 DEBUG(0, "avma1cs_release(0x%p)\n", link);
320
321 /* now unregister function with hisax */
322 HiSax_closecard(local->node.minor);
323
324 pcmcia_disable_device(link);
325 } /* avma1cs_release */
326
327
328 static struct pcmcia_device_id avma1cs_ids[] = {
329 PCMCIA_DEVICE_PROD_ID12("AVM", "ISDN A", 0x95d42008, 0xadc9d4bb),
330 PCMCIA_DEVICE_PROD_ID12("ISDN", "CARD", 0x8d9761c8, 0x01c5aa7b),
331 PCMCIA_DEVICE_NULL
332 };
333 MODULE_DEVICE_TABLE(pcmcia, avma1cs_ids);
334
335 static struct pcmcia_driver avma1cs_driver = {
336 .owner = THIS_MODULE,
337 .drv = {
338 .name = "avma1_cs",
339 },
340 .probe = avma1cs_probe,
341 .remove = avma1cs_detach,
342 .id_table = avma1cs_ids,
343 };
344
345 /*====================================================================*/
346
347 static int __init init_avma1_cs(void)
348 {
349 return(pcmcia_register_driver(&avma1cs_driver));
350 }
351
352 static void __exit exit_avma1_cs(void)
353 {
354 pcmcia_unregister_driver(&avma1cs_driver);
355 }
356
357 module_init(init_avma1_cs);
358 module_exit(exit_avma1_cs);
359
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