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1da177e4 LT |
1 | /* $Id: teles_cs.c,v 1.1.2.2 2004/01/25 15:07:06 keil Exp $ */ |
2 | /*====================================================================== | |
3 | ||
4 | A teles S0 PCMCIA client driver | |
5 | ||
6 | Based on skeleton by David Hinds, dhinds@allegro.stanford.edu | |
7 | Written by Christof Petig, christof.petig@wtal.de | |
8 | ||
9 | Also inspired by ELSA PCMCIA driver | |
10 | by Klaus Lichtenwalder <Lichtenwalder@ACM.org> | |
11 | ||
12 | Extentions to new hisax_pcmcia by Karsten Keil | |
13 | ||
14 | minor changes to be compatible with kernel 2.4.x | |
15 | by Jan.Schubert@GMX.li | |
16 | ||
17 | ======================================================================*/ | |
18 | ||
19 | #include <linux/kernel.h> | |
20 | #include <linux/module.h> | |
21 | #include <linux/init.h> | |
1da177e4 LT |
22 | #include <linux/ptrace.h> |
23 | #include <linux/slab.h> | |
24 | #include <linux/string.h> | |
25 | #include <linux/timer.h> | |
26 | #include <linux/ioport.h> | |
27 | #include <asm/io.h> | |
28 | #include <asm/system.h> | |
29 | ||
1da177e4 LT |
30 | #include <pcmcia/cs_types.h> |
31 | #include <pcmcia/cs.h> | |
32 | #include <pcmcia/cistpl.h> | |
33 | #include <pcmcia/cisreg.h> | |
34 | #include <pcmcia/ds.h> | |
35 | #include "hisax_cfg.h" | |
36 | ||
37 | MODULE_DESCRIPTION("ISDN4Linux: PCMCIA client driver for Teles PCMCIA cards"); | |
38 | MODULE_AUTHOR("Christof Petig, christof.petig@wtal.de, Karsten Keil, kkeil@suse.de"); | |
39 | MODULE_LICENSE("GPL"); | |
40 | ||
41 | /* | |
42 | All the PCMCIA modules use PCMCIA_DEBUG to control debugging. If | |
43 | you do not define PCMCIA_DEBUG at all, all the debug code will be | |
44 | left out. If you compile with PCMCIA_DEBUG=0, the debug code will | |
45 | be present but disabled -- but it can then be enabled for specific | |
46 | modules at load time with a 'pc_debug=#' option to insmod. | |
47 | */ | |
48 | ||
49 | #ifdef PCMCIA_DEBUG | |
50 | static int pc_debug = PCMCIA_DEBUG; | |
51 | module_param(pc_debug, int, 0); | |
52 | #define DEBUG(n, args...) if (pc_debug>(n)) printk(KERN_DEBUG args); | |
53 | static char *version = | |
54 | "teles_cs.c 2.10 2002/07/30 22:23:34 kkeil"; | |
55 | #else | |
56 | #define DEBUG(n, args...) | |
57 | #endif | |
58 | ||
59 | /*====================================================================*/ | |
60 | ||
61 | /* Parameters that can be set with 'insmod' */ | |
62 | ||
63 | static int protocol = 2; /* EURO-ISDN Default */ | |
64 | module_param(protocol, int, 0); | |
65 | ||
66 | /*====================================================================*/ | |
67 | ||
68 | /* | |
69 | The event() function is this driver's Card Services event handler. | |
70 | It will be called by Card Services when an appropriate card status | |
71 | event is received. The config() and release() entry points are | |
72 | used to configure or release a socket, in response to card insertion | |
73 | and ejection events. They are invoked from the teles_cs event | |
74 | handler. | |
75 | */ | |
76 | ||
15b99ac1 | 77 | static int teles_cs_config(struct pcmcia_device *link); |
fba395ee | 78 | static void teles_cs_release(struct pcmcia_device *link); |
1da177e4 LT |
79 | |
80 | /* | |
81 | The attach() and detach() entry points are used to create and destroy | |
82 | "instances" of the driver, where each instance represents everything | |
83 | needed to manage one actual PCMCIA card. | |
84 | */ | |
85 | ||
cc3b4866 | 86 | static void teles_detach(struct pcmcia_device *p_dev); |
1da177e4 | 87 | |
1da177e4 LT |
88 | /* |
89 | A linked list of "instances" of the teles_cs device. Each actual | |
90 | PCMCIA card corresponds to one device instance, and is described | |
fba395ee | 91 | by one struct pcmcia_device structure (defined in ds.h). |
1da177e4 LT |
92 | |
93 | You may not want to use a linked list for this -- for example, the | |
fba395ee | 94 | memory card driver uses an array of struct pcmcia_device pointers, where minor |
1da177e4 LT |
95 | device numbers are used to derive the corresponding array index. |
96 | */ | |
97 | ||
1da177e4 | 98 | /* |
1da177e4 LT |
99 | A driver needs to provide a dev_node_t structure for each device |
100 | on a card. In some cases, there is only one device per card (for | |
101 | example, ethernet cards, modems). In other cases, there may be | |
102 | many actual or logical devices (SCSI adapters, memory cards with | |
103 | multiple partitions). The dev_node_t structures need to be kept | |
fba395ee | 104 | in a linked list starting at the 'dev' field of a struct pcmcia_device |
1da177e4 LT |
105 | structure. We allocate them in the card's private data structure, |
106 | because they generally shouldn't be allocated dynamically. | |
107 | In this case, we also provide a flag to indicate if a device is | |
108 | "stopped" due to a power management event, or card ejection. The | |
109 | device IO routines can use a flag like this to throttle IO to a | |
110 | card that is not ready to accept it. | |
111 | */ | |
112 | ||
113 | typedef struct local_info_t { | |
fd238232 | 114 | struct pcmcia_device *p_dev; |
1da177e4 LT |
115 | dev_node_t node; |
116 | int busy; | |
117 | int cardnr; | |
118 | } local_info_t; | |
119 | ||
120 | /*====================================================================== | |
121 | ||
122 | teles_attach() creates an "instance" of the driver, allocatingx | |
123 | local data structures for one device. The device is registered | |
124 | with Card Services. | |
125 | ||
126 | The dev_link structure is initialized, but we don't actually | |
127 | configure the card at this point -- we wait until we receive a | |
128 | card insertion event. | |
129 | ||
130 | ======================================================================*/ | |
131 | ||
15b99ac1 | 132 | static int teles_probe(struct pcmcia_device *link) |
1da177e4 | 133 | { |
1da177e4 | 134 | local_info_t *local; |
1da177e4 LT |
135 | |
136 | DEBUG(0, "teles_attach()\n"); | |
137 | ||
138 | /* Allocate space for private device-specific data */ | |
41f96935 | 139 | local = kzalloc(sizeof(local_info_t), GFP_KERNEL); |
f8cfa618 | 140 | if (!local) return -ENOMEM; |
1da177e4 | 141 | local->cardnr = -1; |
fd238232 | 142 | |
fba395ee | 143 | local->p_dev = link; |
fd238232 | 144 | link->priv = local; |
1da177e4 LT |
145 | |
146 | /* Interrupt setup */ | |
147 | link->irq.Attributes = IRQ_TYPE_DYNAMIC_SHARING|IRQ_FIRST_SHARED; | |
148 | link->irq.IRQInfo1 = IRQ_LEVEL_ID|IRQ_SHARE_ID; | |
149 | link->irq.Handler = NULL; | |
150 | ||
151 | /* | |
152 | General socket configuration defaults can go here. In this | |
153 | client, we assume very little, and rely on the CIS for almost | |
154 | everything. In most clients, many details (i.e., number, sizes, | |
155 | and attributes of IO windows) are fixed by the nature of the | |
156 | device, and can be hard-wired here. | |
157 | */ | |
158 | link->io.NumPorts1 = 96; | |
159 | link->io.Attributes1 = IO_DATA_PATH_WIDTH_AUTO; | |
160 | link->io.IOAddrLines = 5; | |
161 | ||
162 | link->conf.Attributes = CONF_ENABLE_IRQ; | |
1da177e4 LT |
163 | link->conf.IntType = INT_MEMORY_AND_IO; |
164 | ||
15b99ac1 | 165 | return teles_cs_config(link); |
1da177e4 LT |
166 | } /* teles_attach */ |
167 | ||
168 | /*====================================================================== | |
169 | ||
170 | This deletes a driver "instance". The device is de-registered | |
171 | with Card Services. If it has been released, all local data | |
172 | structures are freed. Otherwise, the structures will be freed | |
173 | when the device is released. | |
174 | ||
175 | ======================================================================*/ | |
176 | ||
fba395ee | 177 | static void teles_detach(struct pcmcia_device *link) |
1da177e4 | 178 | { |
e2d40963 | 179 | local_info_t *info = link->priv; |
1da177e4 | 180 | |
e2d40963 | 181 | DEBUG(0, "teles_detach(0x%p)\n", link); |
1da177e4 | 182 | |
e2d40963 DB |
183 | info->busy = 1; |
184 | teles_cs_release(link); | |
1da177e4 | 185 | |
e2d40963 | 186 | kfree(info); |
1da177e4 LT |
187 | } /* teles_detach */ |
188 | ||
189 | /*====================================================================== | |
190 | ||
191 | teles_cs_config() is scheduled to run after a CARD_INSERTION event | |
192 | is received, to configure the PCMCIA socket, and to make the | |
193 | device available to the system. | |
194 | ||
195 | ======================================================================*/ | |
1da177e4 | 196 | |
5fcd4da0 DB |
197 | static int teles_cs_configcheck(struct pcmcia_device *p_dev, |
198 | cistpl_cftable_entry_t *cf, | |
8e2fc39d | 199 | cistpl_cftable_entry_t *dflt, |
ad913c11 | 200 | unsigned int vcc, |
5fcd4da0 | 201 | void *priv_data) |
1da177e4 | 202 | { |
5fcd4da0 DB |
203 | int j; |
204 | ||
205 | if ((cf->io.nwin > 0) && cf->io.win[0].base) { | |
206 | printk(KERN_INFO "(teles_cs: looks like the 96 model)\n"); | |
5fcd4da0 DB |
207 | p_dev->io.BasePort1 = cf->io.win[0].base; |
208 | if (!pcmcia_request_io(p_dev, &p_dev->io)) | |
209 | return 0; | |
210 | } else { | |
211 | printk(KERN_INFO "(teles_cs: looks like the 97 model)\n"); | |
5fcd4da0 DB |
212 | for (j = 0x2f0; j > 0x100; j -= 0x10) { |
213 | p_dev->io.BasePort1 = j; | |
214 | if (!pcmcia_request_io(p_dev, &p_dev->io)) | |
215 | return 0; | |
216 | } | |
217 | } | |
218 | return -ENODEV; | |
1da177e4 LT |
219 | } |
220 | ||
15b99ac1 | 221 | static int teles_cs_config(struct pcmcia_device *link) |
1da177e4 | 222 | { |
1da177e4 | 223 | local_info_t *dev; |
5fcd4da0 | 224 | int i, last_fn; |
1da177e4 LT |
225 | IsdnCard_t icard; |
226 | ||
227 | DEBUG(0, "teles_config(0x%p)\n", link); | |
1da177e4 LT |
228 | dev = link->priv; |
229 | ||
5fcd4da0 | 230 | i = pcmcia_loop_config(link, teles_cs_configcheck, NULL); |
4c89e88b | 231 | if (i != 0) { |
1da177e4 LT |
232 | last_fn = RequestIO; |
233 | goto cs_failed; | |
234 | } | |
235 | ||
fba395ee | 236 | i = pcmcia_request_irq(link, &link->irq); |
4c89e88b | 237 | if (i != 0) { |
1da177e4 LT |
238 | link->irq.AssignedIRQ = 0; |
239 | last_fn = RequestIRQ; | |
240 | goto cs_failed; | |
241 | } | |
242 | ||
fba395ee | 243 | i = pcmcia_request_configuration(link, &link->conf); |
4c89e88b | 244 | if (i != 0) { |
1da177e4 LT |
245 | last_fn = RequestConfiguration; |
246 | goto cs_failed; | |
247 | } | |
248 | ||
249 | /* At this point, the dev_node_t structure(s) should be | |
250 | initialized and arranged in a linked list at link->dev. *//* */ | |
251 | sprintf(dev->node.dev_name, "teles"); | |
252 | dev->node.major = dev->node.minor = 0x0; | |
253 | ||
fd238232 | 254 | link->dev_node = &dev->node; |
1da177e4 LT |
255 | |
256 | /* Finally, report what we've done */ | |
70294b46 DB |
257 | printk(KERN_INFO "%s: index 0x%02x:", |
258 | dev->node.dev_name, link->conf.ConfigIndex); | |
1da177e4 LT |
259 | if (link->conf.Attributes & CONF_ENABLE_IRQ) |
260 | printk(", irq %d", link->irq.AssignedIRQ); | |
261 | if (link->io.NumPorts1) | |
262 | printk(", io 0x%04x-0x%04x", link->io.BasePort1, | |
263 | link->io.BasePort1+link->io.NumPorts1-1); | |
264 | if (link->io.NumPorts2) | |
265 | printk(" & 0x%04x-0x%04x", link->io.BasePort2, | |
266 | link->io.BasePort2+link->io.NumPorts2-1); | |
267 | printk("\n"); | |
268 | ||
1da177e4 LT |
269 | icard.para[0] = link->irq.AssignedIRQ; |
270 | icard.para[1] = link->io.BasePort1; | |
271 | icard.protocol = protocol; | |
272 | icard.typ = ISDN_CTYPE_TELESPCMCIA; | |
273 | ||
274 | i = hisax_init_pcmcia(link, &(((local_info_t*)link->priv)->busy), &icard); | |
275 | if (i < 0) { | |
276 | printk(KERN_ERR "teles_cs: failed to initialize Teles PCMCIA %d at i/o %#x\n", | |
277 | i, link->io.BasePort1); | |
278 | teles_cs_release(link); | |
15b99ac1 DB |
279 | return -ENODEV; |
280 | } | |
281 | ||
282 | ((local_info_t*)link->priv)->cardnr = i; | |
283 | return 0; | |
1da177e4 | 284 | |
1da177e4 | 285 | cs_failed: |
fba395ee | 286 | cs_error(link, last_fn, i); |
1da177e4 | 287 | teles_cs_release(link); |
15b99ac1 | 288 | return -ENODEV; |
1da177e4 LT |
289 | } /* teles_cs_config */ |
290 | ||
291 | /*====================================================================== | |
292 | ||
293 | After a card is removed, teles_cs_release() will unregister the net | |
294 | device, and release the PCMCIA configuration. If the device is | |
295 | still open, this will be postponed until it is closed. | |
296 | ||
297 | ======================================================================*/ | |
298 | ||
fba395ee | 299 | static void teles_cs_release(struct pcmcia_device *link) |
1da177e4 LT |
300 | { |
301 | local_info_t *local = link->priv; | |
302 | ||
303 | DEBUG(0, "teles_cs_release(0x%p)\n", link); | |
304 | ||
305 | if (local) { | |
306 | if (local->cardnr >= 0) { | |
307 | /* no unregister function with hisax */ | |
308 | HiSax_closecard(local->cardnr); | |
309 | } | |
310 | } | |
5f2a71fc | 311 | |
fba395ee | 312 | pcmcia_disable_device(link); |
1da177e4 LT |
313 | } /* teles_cs_release */ |
314 | ||
fba395ee | 315 | static int teles_suspend(struct pcmcia_device *link) |
98e4c28b | 316 | { |
98e4c28b DB |
317 | local_info_t *dev = link->priv; |
318 | ||
98e4c28b | 319 | dev->busy = 1; |
98e4c28b DB |
320 | |
321 | return 0; | |
322 | } | |
323 | ||
fba395ee | 324 | static int teles_resume(struct pcmcia_device *link) |
98e4c28b | 325 | { |
98e4c28b DB |
326 | local_info_t *dev = link->priv; |
327 | ||
98e4c28b DB |
328 | dev->busy = 0; |
329 | ||
330 | return 0; | |
331 | } | |
332 | ||
1da177e4 | 333 | |
0a10d73d DB |
334 | static struct pcmcia_device_id teles_ids[] = { |
335 | PCMCIA_DEVICE_PROD_ID12("TELES", "S0/PC", 0x67b50eae, 0xe9e70119), | |
336 | PCMCIA_DEVICE_NULL, | |
337 | }; | |
338 | MODULE_DEVICE_TABLE(pcmcia, teles_ids); | |
339 | ||
1da177e4 LT |
340 | static struct pcmcia_driver teles_cs_driver = { |
341 | .owner = THIS_MODULE, | |
342 | .drv = { | |
343 | .name = "teles_cs", | |
344 | }, | |
15b99ac1 | 345 | .probe = teles_probe, |
cc3b4866 | 346 | .remove = teles_detach, |
0a10d73d | 347 | .id_table = teles_ids, |
98e4c28b DB |
348 | .suspend = teles_suspend, |
349 | .resume = teles_resume, | |
1da177e4 LT |
350 | }; |
351 | ||
352 | static int __init init_teles_cs(void) | |
353 | { | |
354 | return pcmcia_register_driver(&teles_cs_driver); | |
355 | } | |
356 | ||
357 | static void __exit exit_teles_cs(void) | |
358 | { | |
359 | pcmcia_unregister_driver(&teles_cs_driver); | |
1da177e4 LT |
360 | } |
361 | ||
362 | module_init(init_teles_cs); | |
363 | module_exit(exit_teles_cs); |