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
avma1cs_probe(struct pcmcia_device * p_dev)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
avma1cs_detach(struct pcmcia_device * link)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
avma1cs_configcheck(struct pcmcia_device * p_dev,cistpl_cftable_entry_t * cf,cistpl_cftable_entry_t * dflt,unsigned int vcc,void * priv_data)177 static int avma1cs_configcheck(struct pcmcia_device *p_dev,
178 cistpl_cftable_entry_t *cf,
179 cistpl_cftable_entry_t *dflt,
180 unsigned int vcc,
181 void *priv_data)
182 {
183 if (cf->io.nwin <= 0)
184 return -ENODEV;
185
186 p_dev->io.BasePort1 = cf->io.win[0].base;
187 p_dev->io.NumPorts1 = cf->io.win[0].len;
188 p_dev->io.NumPorts2 = 0;
189 printk(KERN_INFO "avma1_cs: testing i/o %#x-%#x\n",
190 p_dev->io.BasePort1,
191 p_dev->io.BasePort1+p_dev->io.NumPorts1-1);
192 return pcmcia_request_io(p_dev, &p_dev->io);
193 }
194
195
avma1cs_config(struct pcmcia_device * link)196 static int avma1cs_config(struct pcmcia_device *link)
197 {
198 local_info_t *dev;
199 int i;
200 char devname[128];
201 IsdnCard_t icard;
202 int busy = 0;
203
204 dev = link->priv;
205
206 DEBUG(0, "avma1cs_config(0x%p)\n", link);
207
208 devname[0] = 0;
209 if (link->prod_id[1])
210 strlcpy(devname, link->prod_id[1], sizeof(devname));
211
212 if (pcmcia_loop_config(link, avma1cs_configcheck, NULL))
213 return -ENODEV;
214
215 do {
216 /*
217 * allocate an interrupt line
218 */
219 i = pcmcia_request_irq(link, &link->irq);
220 if (i != 0) {
221 cs_error(link, RequestIRQ, i);
222 /* undo */
223 pcmcia_disable_device(link);
224 break;
225 }
226
227 /*
228 * configure the PCMCIA socket
229 */
230 i = pcmcia_request_configuration(link, &link->conf);
231 if (i != 0) {
232 cs_error(link, RequestConfiguration, i);
233 pcmcia_disable_device(link);
234 break;
235 }
236
237 } while (0);
238
239 /* At this point, the dev_node_t structure(s) should be
240 initialized and arranged in a linked list at link->dev. */
241
242 strcpy(dev->node.dev_name, "A1");
243 dev->node.major = 45;
244 dev->node.minor = 0;
245 link->dev_node = &dev->node;
246
247 /* If any step failed, release any partially configured state */
248 if (i != 0) {
249 avma1cs_release(link);
250 return -ENODEV;
251 }
252
253 printk(KERN_NOTICE "avma1_cs: checking at i/o %#x, irq %d\n",
254 link->io.BasePort1, link->irq.AssignedIRQ);
255
256 icard.para[0] = link->irq.AssignedIRQ;
257 icard.para[1] = link->io.BasePort1;
258 icard.protocol = isdnprot;
259 icard.typ = ISDN_CTYPE_A1_PCMCIA;
260
261 i = hisax_init_pcmcia(link, &busy, &icard);
262 if (i < 0) {
263 printk(KERN_ERR "avma1_cs: failed to initialize AVM A1 PCMCIA %d at i/o %#x\n", i, link->io.BasePort1);
264 avma1cs_release(link);
265 return -ENODEV;
266 }
267 dev->node.minor = i;
268
269 return 0;
270 } /* avma1cs_config */
271
272 /*======================================================================
273
274 After a card is removed, avma1cs_release() will unregister the net
275 device, and release the PCMCIA configuration. If the device is
276 still open, this will be postponed until it is closed.
277
278 ======================================================================*/
279
avma1cs_release(struct pcmcia_device * link)280 static void avma1cs_release(struct pcmcia_device *link)
281 {
282 local_info_t *local = link->priv;
283
284 DEBUG(0, "avma1cs_release(0x%p)\n", link);
285
286 /* now unregister function with hisax */
287 HiSax_closecard(local->node.minor);
288
289 pcmcia_disable_device(link);
290 } /* avma1cs_release */
291
292
293 static struct pcmcia_device_id avma1cs_ids[] = {
294 PCMCIA_DEVICE_PROD_ID12("AVM", "ISDN A", 0x95d42008, 0xadc9d4bb),
295 PCMCIA_DEVICE_PROD_ID12("ISDN", "CARD", 0x8d9761c8, 0x01c5aa7b),
296 PCMCIA_DEVICE_NULL
297 };
298 MODULE_DEVICE_TABLE(pcmcia, avma1cs_ids);
299
300 static struct pcmcia_driver avma1cs_driver = {
301 .owner = THIS_MODULE,
302 .drv = {
303 .name = "avma1_cs",
304 },
305 .probe = avma1cs_probe,
306 .remove = avma1cs_detach,
307 .id_table = avma1cs_ids,
308 };
309
310 /*====================================================================*/
311
init_avma1_cs(void)312 static int __init init_avma1_cs(void)
313 {
314 return(pcmcia_register_driver(&avma1cs_driver));
315 }
316
exit_avma1_cs(void)317 static void __exit exit_avma1_cs(void)
318 {
319 pcmcia_unregister_driver(&avma1cs_driver);
320 }
321
322 module_init(init_avma1_cs);
323 module_exit(exit_avma1_cs);
324