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1da177e4 LT |
1 | /*====================================================================== |
2 | ||
3 | An elsa_cs PCMCIA client driver | |
4 | ||
5 | This driver is for the Elsa PCM ISDN Cards, i.e. the MicroLink | |
6 | ||
7 | ||
8 | The contents of this file are subject to the Mozilla Public | |
9 | License Version 1.1 (the "License"); you may not use this file | |
10 | except in compliance with the License. You may obtain a copy of | |
11 | the License at http://www.mozilla.org/MPL/ | |
12 | ||
13 | Software distributed under the License is distributed on an "AS | |
14 | IS" basis, WITHOUT WARRANTY OF ANY KIND, either express or | |
15 | implied. See the License for the specific language governing | |
16 | rights and limitations under the License. | |
17 | ||
18 | The initial developer of the original code is David A. Hinds | |
19 | <dahinds@users.sourceforge.net>. Portions created by David A. Hinds | |
20 | are Copyright (C) 1999 David A. Hinds. All Rights Reserved. | |
21 | ||
22 | Modifications from dummy_cs.c are Copyright (C) 1999-2001 Klaus | |
23 | Lichtenwalder <Lichtenwalder@ACM.org>. All Rights Reserved. | |
24 | ||
25 | Alternatively, the contents of this file may be used under the | |
26 | terms of the GNU General Public License version 2 (the "GPL"), in | |
27 | which case the provisions of the GPL are applicable instead of the | |
28 | above. If you wish to allow the use of your version of this file | |
29 | only under the terms of the GPL and not to allow others to use | |
30 | your version of this file under the MPL, indicate your decision | |
31 | by deleting the provisions above and replace them with the notice | |
32 | and other provisions required by the GPL. If you do not delete | |
33 | the provisions above, a recipient may use your version of this | |
34 | file under either the MPL or the GPL. | |
35 | ||
36 | ======================================================================*/ | |
37 | ||
38 | #include <linux/module.h> | |
39 | #include <linux/kernel.h> | |
40 | #include <linux/init.h> | |
1da177e4 LT |
41 | #include <linux/ptrace.h> |
42 | #include <linux/slab.h> | |
43 | #include <linux/string.h> | |
44 | #include <linux/timer.h> | |
45 | #include <linux/ioport.h> | |
46 | #include <asm/io.h> | |
47 | #include <asm/system.h> | |
48 | ||
1da177e4 LT |
49 | #include <pcmcia/cs_types.h> |
50 | #include <pcmcia/cs.h> | |
51 | #include <pcmcia/cistpl.h> | |
52 | #include <pcmcia/cisreg.h> | |
53 | #include <pcmcia/ds.h> | |
54 | #include "hisax_cfg.h" | |
55 | ||
56 | MODULE_DESCRIPTION("ISDN4Linux: PCMCIA client driver for Elsa PCM cards"); | |
57 | MODULE_AUTHOR("Klaus Lichtenwalder"); | |
58 | MODULE_LICENSE("Dual MPL/GPL"); | |
59 | ||
1da177e4 LT |
60 | |
61 | /*====================================================================*/ | |
62 | ||
63 | /* Parameters that can be set with 'insmod' */ | |
64 | ||
65 | static int protocol = 2; /* EURO-ISDN Default */ | |
66 | module_param(protocol, int, 0); | |
67 | ||
68 | /*====================================================================*/ | |
69 | ||
70 | /* | |
71 | The event() function is this driver's Card Services event handler. | |
72 | It will be called by Card Services when an appropriate card status | |
73 | event is received. The config() and release() entry points are | |
74 | used to configure or release a socket, in response to card insertion | |
75 | and ejection events. They are invoked from the elsa_cs event | |
76 | handler. | |
77 | */ | |
78 | ||
15b99ac1 | 79 | static int elsa_cs_config(struct pcmcia_device *link); |
fba395ee | 80 | static void elsa_cs_release(struct pcmcia_device *link); |
1da177e4 LT |
81 | |
82 | /* | |
83 | The attach() and detach() entry points are used to create and destroy | |
84 | "instances" of the driver, where each instance represents everything | |
85 | needed to manage one actual PCMCIA card. | |
86 | */ | |
87 | ||
cc3b4866 | 88 | static void elsa_cs_detach(struct pcmcia_device *p_dev); |
1da177e4 | 89 | |
1da177e4 | 90 | /* |
1da177e4 LT |
91 | A driver needs to provide a dev_node_t structure for each device |
92 | on a card. In some cases, there is only one device per card (for | |
93 | example, ethernet cards, modems). In other cases, there may be | |
94 | many actual or logical devices (SCSI adapters, memory cards with | |
95 | multiple partitions). The dev_node_t structures need to be kept | |
fba395ee | 96 | in a linked list starting at the 'dev' field of a struct pcmcia_device |
1da177e4 LT |
97 | structure. We allocate them in the card's private data structure, |
98 | because they generally shouldn't be allocated dynamically. | |
99 | In this case, we also provide a flag to indicate if a device is | |
100 | "stopped" due to a power management event, or card ejection. The | |
101 | device IO routines can use a flag like this to throttle IO to a | |
102 | card that is not ready to accept it. | |
103 | */ | |
104 | ||
105 | typedef struct local_info_t { | |
fd238232 | 106 | struct pcmcia_device *p_dev; |
1da177e4 LT |
107 | dev_node_t node; |
108 | int busy; | |
109 | int cardnr; | |
110 | } local_info_t; | |
111 | ||
112 | /*====================================================================== | |
113 | ||
114 | elsa_cs_attach() creates an "instance" of the driver, allocatingx | |
115 | local data structures for one device. The device is registered | |
116 | with Card Services. | |
117 | ||
118 | The dev_link structure is initialized, but we don't actually | |
119 | configure the card at this point -- we wait until we receive a | |
120 | card insertion event. | |
121 | ||
122 | ======================================================================*/ | |
123 | ||
15b99ac1 | 124 | static int elsa_cs_probe(struct pcmcia_device *link) |
1da177e4 | 125 | { |
1da177e4 | 126 | local_info_t *local; |
1da177e4 | 127 | |
e773cfe1 | 128 | dev_dbg(&link->dev, "elsa_cs_attach()\n"); |
1da177e4 LT |
129 | |
130 | /* Allocate space for private device-specific data */ | |
41f96935 | 131 | local = kzalloc(sizeof(local_info_t), GFP_KERNEL); |
f8cfa618 | 132 | if (!local) return -ENOMEM; |
fd238232 | 133 | |
fba395ee | 134 | local->p_dev = link; |
fd238232 DB |
135 | link->priv = local; |
136 | ||
1da177e4 | 137 | local->cardnr = -1; |
1da177e4 LT |
138 | |
139 | /* Interrupt setup */ | |
e15c1c1f | 140 | link->irq.Attributes = IRQ_TYPE_DYNAMIC_SHARING; |
1da177e4 LT |
141 | link->irq.Handler = NULL; |
142 | ||
143 | /* | |
144 | General socket configuration defaults can go here. In this | |
145 | client, we assume very little, and rely on the CIS for almost | |
146 | everything. In most clients, many details (i.e., number, sizes, | |
147 | and attributes of IO windows) are fixed by the nature of the | |
148 | device, and can be hard-wired here. | |
149 | */ | |
150 | link->io.NumPorts1 = 8; | |
151 | link->io.Attributes1 = IO_DATA_PATH_WIDTH_AUTO; | |
152 | link->io.IOAddrLines = 3; | |
153 | ||
154 | link->conf.Attributes = CONF_ENABLE_IRQ; | |
1da177e4 LT |
155 | link->conf.IntType = INT_MEMORY_AND_IO; |
156 | ||
15b99ac1 | 157 | return elsa_cs_config(link); |
1da177e4 LT |
158 | } /* elsa_cs_attach */ |
159 | ||
160 | /*====================================================================== | |
161 | ||
162 | This deletes a driver "instance". The device is de-registered | |
163 | with Card Services. If it has been released, all local data | |
164 | structures are freed. Otherwise, the structures will be freed | |
165 | when the device is released. | |
166 | ||
167 | ======================================================================*/ | |
168 | ||
fba395ee | 169 | static void elsa_cs_detach(struct pcmcia_device *link) |
1da177e4 | 170 | { |
e2d40963 | 171 | local_info_t *info = link->priv; |
1da177e4 | 172 | |
e773cfe1 | 173 | dev_dbg(&link->dev, "elsa_cs_detach(0x%p)\n", link); |
1da177e4 | 174 | |
e2d40963 DB |
175 | info->busy = 1; |
176 | elsa_cs_release(link); | |
1da177e4 | 177 | |
e2d40963 | 178 | kfree(info); |
1da177e4 LT |
179 | } /* elsa_cs_detach */ |
180 | ||
181 | /*====================================================================== | |
182 | ||
183 | elsa_cs_config() is scheduled to run after a CARD_INSERTION event | |
184 | is received, to configure the PCMCIA socket, and to make the | |
185 | device available to the system. | |
186 | ||
187 | ======================================================================*/ | |
1da177e4 | 188 | |
5fcd4da0 DB |
189 | static int elsa_cs_configcheck(struct pcmcia_device *p_dev, |
190 | cistpl_cftable_entry_t *cf, | |
8e2fc39d | 191 | cistpl_cftable_entry_t *dflt, |
ad913c11 | 192 | unsigned int vcc, |
5fcd4da0 | 193 | void *priv_data) |
1da177e4 | 194 | { |
5fcd4da0 DB |
195 | int j; |
196 | ||
197 | if ((cf->io.nwin > 0) && cf->io.win[0].base) { | |
198 | printk(KERN_INFO "(elsa_cs: looks like the 96 model)\n"); | |
5fcd4da0 DB |
199 | p_dev->io.BasePort1 = cf->io.win[0].base; |
200 | if (!pcmcia_request_io(p_dev, &p_dev->io)) | |
201 | return 0; | |
202 | } else { | |
203 | printk(KERN_INFO "(elsa_cs: looks like the 97 model)\n"); | |
5fcd4da0 DB |
204 | for (j = 0x2f0; j > 0x100; j -= 0x10) { |
205 | p_dev->io.BasePort1 = j; | |
206 | if (!pcmcia_request_io(p_dev, &p_dev->io)) | |
207 | return 0; | |
208 | } | |
209 | } | |
210 | return -ENODEV; | |
1da177e4 LT |
211 | } |
212 | ||
15b99ac1 | 213 | static int elsa_cs_config(struct pcmcia_device *link) |
1da177e4 | 214 | { |
1da177e4 | 215 | local_info_t *dev; |
e773cfe1 | 216 | int i; |
1da177e4 LT |
217 | IsdnCard_t icard; |
218 | ||
e773cfe1 | 219 | dev_dbg(&link->dev, "elsa_config(0x%p)\n", link); |
1da177e4 LT |
220 | dev = link->priv; |
221 | ||
5fcd4da0 | 222 | i = pcmcia_loop_config(link, elsa_cs_configcheck, NULL); |
e773cfe1 DB |
223 | if (i != 0) |
224 | goto failed; | |
1da177e4 | 225 | |
fba395ee | 226 | i = pcmcia_request_irq(link, &link->irq); |
4c89e88b | 227 | if (i != 0) { |
1da177e4 | 228 | link->irq.AssignedIRQ = 0; |
e773cfe1 | 229 | goto failed; |
1da177e4 LT |
230 | } |
231 | ||
fba395ee | 232 | i = pcmcia_request_configuration(link, &link->conf); |
e773cfe1 DB |
233 | if (i != 0) |
234 | goto failed; | |
1da177e4 LT |
235 | |
236 | /* At this point, the dev_node_t structure(s) should be | |
237 | initialized and arranged in a linked list at link->dev. *//* */ | |
238 | sprintf(dev->node.dev_name, "elsa"); | |
239 | dev->node.major = dev->node.minor = 0x0; | |
240 | ||
fd238232 | 241 | link->dev_node = &dev->node; |
1da177e4 LT |
242 | |
243 | /* Finally, report what we've done */ | |
70294b46 DB |
244 | printk(KERN_INFO "%s: index 0x%02x: ", |
245 | dev->node.dev_name, link->conf.ConfigIndex); | |
1da177e4 LT |
246 | if (link->conf.Attributes & CONF_ENABLE_IRQ) |
247 | printk(", irq %d", link->irq.AssignedIRQ); | |
248 | if (link->io.NumPorts1) | |
249 | printk(", io 0x%04x-0x%04x", link->io.BasePort1, | |
250 | link->io.BasePort1+link->io.NumPorts1-1); | |
251 | if (link->io.NumPorts2) | |
252 | printk(" & 0x%04x-0x%04x", link->io.BasePort2, | |
253 | link->io.BasePort2+link->io.NumPorts2-1); | |
254 | printk("\n"); | |
255 | ||
1da177e4 LT |
256 | icard.para[0] = link->irq.AssignedIRQ; |
257 | icard.para[1] = link->io.BasePort1; | |
258 | icard.protocol = protocol; | |
259 | icard.typ = ISDN_CTYPE_ELSA_PCMCIA; | |
260 | ||
261 | i = hisax_init_pcmcia(link, &(((local_info_t*)link->priv)->busy), &icard); | |
262 | if (i < 0) { | |
263 | printk(KERN_ERR "elsa_cs: failed to initialize Elsa PCMCIA %d at i/o %#x\n", | |
264 | i, link->io.BasePort1); | |
265 | elsa_cs_release(link); | |
266 | } else | |
267 | ((local_info_t*)link->priv)->cardnr = i; | |
268 | ||
15b99ac1 | 269 | return 0; |
e773cfe1 | 270 | failed: |
1da177e4 | 271 | elsa_cs_release(link); |
15b99ac1 | 272 | return -ENODEV; |
1da177e4 LT |
273 | } /* elsa_cs_config */ |
274 | ||
275 | /*====================================================================== | |
276 | ||
277 | After a card is removed, elsa_cs_release() will unregister the net | |
278 | device, and release the PCMCIA configuration. If the device is | |
279 | still open, this will be postponed until it is closed. | |
280 | ||
281 | ======================================================================*/ | |
282 | ||
fba395ee | 283 | static void elsa_cs_release(struct pcmcia_device *link) |
1da177e4 LT |
284 | { |
285 | local_info_t *local = link->priv; | |
286 | ||
e773cfe1 | 287 | dev_dbg(&link->dev, "elsa_cs_release(0x%p)\n", link); |
1da177e4 LT |
288 | |
289 | if (local) { | |
290 | if (local->cardnr >= 0) { | |
291 | /* no unregister function with hisax */ | |
292 | HiSax_closecard(local->cardnr); | |
293 | } | |
294 | } | |
5f2a71fc | 295 | |
fba395ee | 296 | pcmcia_disable_device(link); |
1da177e4 LT |
297 | } /* elsa_cs_release */ |
298 | ||
fba395ee | 299 | static int elsa_suspend(struct pcmcia_device *link) |
98e4c28b | 300 | { |
98e4c28b DB |
301 | local_info_t *dev = link->priv; |
302 | ||
98e4c28b | 303 | dev->busy = 1; |
98e4c28b DB |
304 | |
305 | return 0; | |
306 | } | |
307 | ||
fba395ee | 308 | static int elsa_resume(struct pcmcia_device *link) |
98e4c28b | 309 | { |
98e4c28b DB |
310 | local_info_t *dev = link->priv; |
311 | ||
98e4c28b DB |
312 | dev->busy = 0; |
313 | ||
314 | return 0; | |
315 | } | |
316 | ||
02ae38cf DB |
317 | static struct pcmcia_device_id elsa_ids[] = { |
318 | PCMCIA_DEVICE_PROD_ID12("ELSA AG (Aachen, Germany)", "MicroLink ISDN/MC ", 0x983de2c4, 0x333ba257), | |
319 | PCMCIA_DEVICE_PROD_ID12("ELSA GmbH, Aachen", "MicroLink ISDN/MC ", 0x639e5718, 0x333ba257), | |
320 | PCMCIA_DEVICE_NULL | |
321 | }; | |
322 | MODULE_DEVICE_TABLE(pcmcia, elsa_ids); | |
323 | ||
1da177e4 LT |
324 | static struct pcmcia_driver elsa_cs_driver = { |
325 | .owner = THIS_MODULE, | |
326 | .drv = { | |
327 | .name = "elsa_cs", | |
328 | }, | |
15b99ac1 | 329 | .probe = elsa_cs_probe, |
cc3b4866 | 330 | .remove = elsa_cs_detach, |
02ae38cf | 331 | .id_table = elsa_ids, |
98e4c28b DB |
332 | .suspend = elsa_suspend, |
333 | .resume = elsa_resume, | |
1da177e4 LT |
334 | }; |
335 | ||
336 | static int __init init_elsa_cs(void) | |
337 | { | |
338 | return pcmcia_register_driver(&elsa_cs_driver); | |
339 | } | |
340 | ||
341 | static void __exit exit_elsa_cs(void) | |
342 | { | |
343 | pcmcia_unregister_driver(&elsa_cs_driver); | |
1da177e4 LT |
344 | } |
345 | ||
346 | module_init(init_elsa_cs); | |
347 | module_exit(exit_elsa_cs); |