Merge branches 'topic/fix/misc' and 'topic/fix/hda' into for-linus
[linux-2.6] / drivers / char / pcmcia / ipwireless / main.c
1 /*
2  * IPWireless 3G PCMCIA Network Driver
3  *
4  * Original code
5  *   by Stephen Blackheath <stephen@blacksapphire.com>,
6  *      Ben Martel <benm@symmetric.co.nz>
7  *
8  * Copyrighted as follows:
9  *   Copyright (C) 2004 by Symmetric Systems Ltd (NZ)
10  *
11  * Various driver changes and rewrites, port to new kernels
12  *   Copyright (C) 2006-2007 Jiri Kosina
13  *
14  * Misc code cleanups and updates
15  *   Copyright (C) 2007 David Sterba
16  */
17
18 #include "hardware.h"
19 #include "network.h"
20 #include "main.h"
21 #include "tty.h"
22
23 #include <linux/delay.h>
24 #include <linux/init.h>
25 #include <linux/io.h>
26 #include <linux/kernel.h>
27 #include <linux/module.h>
28 #include <linux/sched.h>
29 #include <linux/slab.h>
30
31 #include <pcmcia/cisreg.h>
32 #include <pcmcia/device_id.h>
33 #include <pcmcia/ss.h>
34 #include <pcmcia/ds.h>
35 #include <pcmcia/cs.h>
36
37 static struct pcmcia_device_id ipw_ids[] = {
38         PCMCIA_DEVICE_MANF_CARD(0x02f2, 0x0100),
39         PCMCIA_DEVICE_MANF_CARD(0x02f2, 0x0200),
40         PCMCIA_DEVICE_NULL
41 };
42 MODULE_DEVICE_TABLE(pcmcia, ipw_ids);
43
44 static void ipwireless_detach(struct pcmcia_device *link);
45
46 /*
47  * Module params
48  */
49 /* Debug mode: more verbose, print sent/recv bytes */
50 int ipwireless_debug;
51 int ipwireless_loopback;
52 int ipwireless_out_queue = 10;
53
54 module_param_named(debug, ipwireless_debug, int, 0);
55 module_param_named(loopback, ipwireless_loopback, int, 0);
56 module_param_named(out_queue, ipwireless_out_queue, int, 0);
57 MODULE_PARM_DESC(debug, "switch on debug messages [0]");
58 MODULE_PARM_DESC(loopback,
59                 "debug: enable ras_raw channel [0]");
60 MODULE_PARM_DESC(out_queue, "debug: set size of outgoing PPP queue [10]");
61
62 /* Executes in process context. */
63 static void signalled_reboot_work(struct work_struct *work_reboot)
64 {
65         struct ipw_dev *ipw = container_of(work_reboot, struct ipw_dev,
66                         work_reboot);
67         struct pcmcia_device *link = ipw->link;
68         int ret = pcmcia_reset_card(link->socket);
69
70         if (ret != 0)
71                 cs_error(link, ResetCard, ret);
72 }
73
74 static void signalled_reboot_callback(void *callback_data)
75 {
76         struct ipw_dev *ipw = (struct ipw_dev *) callback_data;
77
78         /* Delegate to process context. */
79         schedule_work(&ipw->work_reboot);
80 }
81
82 static int config_ipwireless(struct ipw_dev *ipw)
83 {
84         struct pcmcia_device *link = ipw->link;
85         int ret;
86         tuple_t tuple;
87         unsigned short buf[64];
88         cisparse_t parse;
89         unsigned short cor_value;
90         memreq_t memreq_attr_memory;
91         memreq_t memreq_common_memory;
92
93         ipw->is_v2_card = 0;
94
95         tuple.Attributes = 0;
96         tuple.TupleData = (cisdata_t *) buf;
97         tuple.TupleDataMax = sizeof(buf);
98         tuple.TupleOffset = 0;
99
100         tuple.DesiredTuple = RETURN_FIRST_TUPLE;
101
102         ret = pcmcia_get_first_tuple(link, &tuple);
103
104         while (ret == 0) {
105                 ret = pcmcia_get_tuple_data(link, &tuple);
106
107                 if (ret != 0) {
108                         cs_error(link, GetTupleData, ret);
109                         goto exit0;
110                 }
111                 ret = pcmcia_get_next_tuple(link, &tuple);
112         }
113
114         tuple.DesiredTuple = CISTPL_CFTABLE_ENTRY;
115
116         ret = pcmcia_get_first_tuple(link, &tuple);
117
118         if (ret != 0) {
119                 cs_error(link, GetFirstTuple, ret);
120                 goto exit0;
121         }
122
123         ret = pcmcia_get_tuple_data(link, &tuple);
124
125         if (ret != 0) {
126                 cs_error(link, GetTupleData, ret);
127                 goto exit0;
128         }
129
130         ret = pcmcia_parse_tuple(&tuple, &parse);
131
132         if (ret != 0) {
133                 cs_error(link, ParseTuple, ret);
134                 goto exit0;
135         }
136
137         link->io.Attributes1 = IO_DATA_PATH_WIDTH_AUTO;
138         link->io.BasePort1 = parse.cftable_entry.io.win[0].base;
139         link->io.NumPorts1 = parse.cftable_entry.io.win[0].len;
140         link->io.IOAddrLines = 16;
141
142         link->irq.IRQInfo1 = parse.cftable_entry.irq.IRQInfo1;
143
144         /* 0x40 causes it to generate level mode interrupts. */
145         /* 0x04 enables IREQ pin. */
146         cor_value = parse.cftable_entry.index | 0x44;
147         link->conf.ConfigIndex = cor_value;
148
149         /* IRQ and I/O settings */
150         tuple.DesiredTuple = CISTPL_CONFIG;
151
152         ret = pcmcia_get_first_tuple(link, &tuple);
153
154         if (ret != 0) {
155                 cs_error(link, GetFirstTuple, ret);
156                 goto exit0;
157         }
158
159         ret = pcmcia_get_tuple_data(link, &tuple);
160
161         if (ret != 0) {
162                 cs_error(link, GetTupleData, ret);
163                 goto exit0;
164         }
165
166         ret = pcmcia_parse_tuple(&tuple, &parse);
167
168         if (ret != 0) {
169                 cs_error(link, GetTupleData, ret);
170                 goto exit0;
171         }
172         link->conf.Attributes = CONF_ENABLE_IRQ;
173         link->conf.ConfigBase = parse.config.base;
174         link->conf.Present = parse.config.rmask[0];
175         link->conf.IntType = INT_MEMORY_AND_IO;
176
177         link->irq.Attributes = IRQ_TYPE_DYNAMIC_SHARING | IRQ_HANDLE_PRESENT;
178         link->irq.Handler = ipwireless_interrupt;
179         link->irq.Instance = ipw->hardware;
180
181         ret = pcmcia_request_io(link, &link->io);
182
183         if (ret != 0) {
184                 cs_error(link, RequestIO, ret);
185                 goto exit0;
186         }
187
188         request_region(link->io.BasePort1, link->io.NumPorts1,
189                         IPWIRELESS_PCCARD_NAME);
190
191         /* memory settings */
192
193         tuple.DesiredTuple = CISTPL_CFTABLE_ENTRY;
194
195         ret = pcmcia_get_first_tuple(link, &tuple);
196
197         if (ret != 0) {
198                 cs_error(link, GetFirstTuple, ret);
199                 goto exit1;
200         }
201
202         ret = pcmcia_get_tuple_data(link, &tuple);
203
204         if (ret != 0) {
205                 cs_error(link, GetTupleData, ret);
206                 goto exit1;
207         }
208
209         ret = pcmcia_parse_tuple(&tuple, &parse);
210
211         if (ret != 0) {
212                 cs_error(link, ParseTuple, ret);
213                 goto exit1;
214         }
215
216         if (parse.cftable_entry.mem.nwin > 0) {
217                 ipw->request_common_memory.Attributes =
218                         WIN_DATA_WIDTH_16 | WIN_MEMORY_TYPE_CM | WIN_ENABLE;
219                 ipw->request_common_memory.Base =
220                         parse.cftable_entry.mem.win[0].host_addr;
221                 ipw->request_common_memory.Size = parse.cftable_entry.mem.win[0].len;
222                 if (ipw->request_common_memory.Size < 0x1000)
223                         ipw->request_common_memory.Size = 0x1000;
224                 ipw->request_common_memory.AccessSpeed = 0;
225
226                 ret = pcmcia_request_window(&link, &ipw->request_common_memory,
227                                 &ipw->handle_common_memory);
228
229                 if (ret != 0) {
230                         cs_error(link, RequestWindow, ret);
231                         goto exit1;
232                 }
233
234                 memreq_common_memory.CardOffset =
235                         parse.cftable_entry.mem.win[0].card_addr;
236                 memreq_common_memory.Page = 0;
237
238                 ret = pcmcia_map_mem_page(ipw->handle_common_memory,
239                                 &memreq_common_memory);
240
241                 if (ret != 0) {
242                         cs_error(link, MapMemPage, ret);
243                         goto exit1;
244                 }
245
246                 ipw->is_v2_card =
247                         parse.cftable_entry.mem.win[0].len == 0x100;
248
249                 ipw->common_memory = ioremap(ipw->request_common_memory.Base,
250                                 ipw->request_common_memory.Size);
251                 request_mem_region(ipw->request_common_memory.Base,
252                                 ipw->request_common_memory.Size, IPWIRELESS_PCCARD_NAME);
253
254                 ipw->request_attr_memory.Attributes =
255                         WIN_DATA_WIDTH_16 | WIN_MEMORY_TYPE_AM | WIN_ENABLE;
256                 ipw->request_attr_memory.Base = 0;
257                 ipw->request_attr_memory.Size = 0;      /* this used to be 0x1000 */
258                 ipw->request_attr_memory.AccessSpeed = 0;
259
260                 ret = pcmcia_request_window(&link, &ipw->request_attr_memory,
261                                 &ipw->handle_attr_memory);
262
263                 if (ret != 0) {
264                         cs_error(link, RequestWindow, ret);
265                         goto exit2;
266                 }
267
268                 memreq_attr_memory.CardOffset = 0;
269                 memreq_attr_memory.Page = 0;
270
271                 ret = pcmcia_map_mem_page(ipw->handle_attr_memory,
272                                 &memreq_attr_memory);
273
274                 if (ret != 0) {
275                         cs_error(link, MapMemPage, ret);
276                         goto exit2;
277                 }
278
279                 ipw->attr_memory = ioremap(ipw->request_attr_memory.Base,
280                                 ipw->request_attr_memory.Size);
281                 request_mem_region(ipw->request_attr_memory.Base, ipw->request_attr_memory.Size,
282                                 IPWIRELESS_PCCARD_NAME);
283         }
284
285         INIT_WORK(&ipw->work_reboot, signalled_reboot_work);
286
287         ipwireless_init_hardware_v1(ipw->hardware, link->io.BasePort1,
288                                     ipw->attr_memory, ipw->common_memory,
289                                     ipw->is_v2_card, signalled_reboot_callback,
290                                     ipw);
291
292         ret = pcmcia_request_irq(link, &link->irq);
293
294         if (ret != 0) {
295                 cs_error(link, RequestIRQ, ret);
296                 goto exit3;
297         }
298
299         printk(KERN_INFO IPWIRELESS_PCCARD_NAME ": Card type %s\n",
300                         ipw->is_v2_card ? "V2/V3" : "V1");
301         printk(KERN_INFO IPWIRELESS_PCCARD_NAME
302                         ": I/O ports 0x%04x-0x%04x, irq %d\n",
303                         (unsigned int) link->io.BasePort1,
304                         (unsigned int) (link->io.BasePort1 +
305                                 link->io.NumPorts1 - 1),
306                         (unsigned int) link->irq.AssignedIRQ);
307         if (ipw->attr_memory && ipw->common_memory)
308                 printk(KERN_INFO IPWIRELESS_PCCARD_NAME
309                         ": attr memory 0x%08lx-0x%08lx, common memory 0x%08lx-0x%08lx\n",
310                         ipw->request_attr_memory.Base,
311                         ipw->request_attr_memory.Base
312                         + ipw->request_attr_memory.Size - 1,
313                         ipw->request_common_memory.Base,
314                         ipw->request_common_memory.Base
315                         + ipw->request_common_memory.Size - 1);
316
317         ipw->network = ipwireless_network_create(ipw->hardware);
318         if (!ipw->network)
319                 goto exit3;
320
321         ipw->tty = ipwireless_tty_create(ipw->hardware, ipw->network,
322                         ipw->nodes);
323         if (!ipw->tty)
324                 goto exit3;
325
326         ipwireless_init_hardware_v2_v3(ipw->hardware);
327
328         /*
329          * Do the RequestConfiguration last, because it enables interrupts.
330          * Then we don't get any interrupts before we're ready for them.
331          */
332         ret = pcmcia_request_configuration(link, &link->conf);
333
334         if (ret != 0) {
335                 cs_error(link, RequestConfiguration, ret);
336                 goto exit4;
337         }
338
339         link->dev_node = &ipw->nodes[0];
340
341         return 0;
342
343 exit4:
344         pcmcia_disable_device(link);
345 exit3:
346         if (ipw->attr_memory) {
347                 release_mem_region(ipw->request_attr_memory.Base,
348                                 ipw->request_attr_memory.Size);
349                 iounmap(ipw->attr_memory);
350                 pcmcia_release_window(ipw->handle_attr_memory);
351                 pcmcia_disable_device(link);
352         }
353 exit2:
354         if (ipw->common_memory) {
355                 release_mem_region(ipw->request_common_memory.Base,
356                                 ipw->request_common_memory.Size);
357                 iounmap(ipw->common_memory);
358                 pcmcia_release_window(ipw->handle_common_memory);
359         }
360 exit1:
361         pcmcia_disable_device(link);
362 exit0:
363         return -1;
364 }
365
366 static void release_ipwireless(struct ipw_dev *ipw)
367 {
368         pcmcia_disable_device(ipw->link);
369
370         if (ipw->common_memory) {
371                 release_mem_region(ipw->request_common_memory.Base,
372                                 ipw->request_common_memory.Size);
373                 iounmap(ipw->common_memory);
374         }
375         if (ipw->attr_memory) {
376                 release_mem_region(ipw->request_attr_memory.Base,
377                                 ipw->request_attr_memory.Size);
378                 iounmap(ipw->attr_memory);
379         }
380         if (ipw->common_memory)
381                 pcmcia_release_window(ipw->handle_common_memory);
382         if (ipw->attr_memory)
383                 pcmcia_release_window(ipw->handle_attr_memory);
384
385         /* Break the link with Card Services */
386         pcmcia_disable_device(ipw->link);
387 }
388
389 /*
390  * ipwireless_attach() creates an "instance" of the driver, allocating
391  * local data structures for one device (one interface).  The device
392  * is registered with Card Services.
393  *
394  * The pcmcia_device structure is initialized, but we don't actually
395  * configure the card at this point -- we wait until we receive a
396  * card insertion event.
397  */
398 static int ipwireless_attach(struct pcmcia_device *link)
399 {
400         struct ipw_dev *ipw;
401         int ret;
402
403         ipw = kzalloc(sizeof(struct ipw_dev), GFP_KERNEL);
404         if (!ipw)
405                 return -ENOMEM;
406
407         ipw->link = link;
408         link->priv = ipw;
409         link->irq.Instance = ipw;
410
411         /* Link this device into our device list. */
412         link->dev_node = &ipw->nodes[0];
413
414         ipw->hardware = ipwireless_hardware_create();
415         if (!ipw->hardware) {
416                 kfree(ipw);
417                 return -ENOMEM;
418         }
419         /* RegisterClient will call config_ipwireless */
420
421         ret = config_ipwireless(ipw);
422
423         if (ret != 0) {
424                 cs_error(link, RegisterClient, ret);
425                 ipwireless_detach(link);
426                 return ret;
427         }
428
429         return 0;
430 }
431
432 /*
433  * This deletes a driver "instance".  The device is de-registered with
434  * Card Services.  If it has been released, all local data structures
435  * are freed.  Otherwise, the structures will be freed when the device
436  * is released.
437  */
438 static void ipwireless_detach(struct pcmcia_device *link)
439 {
440         struct ipw_dev *ipw = link->priv;
441
442         release_ipwireless(ipw);
443
444         if (ipw->tty != NULL)
445                 ipwireless_tty_free(ipw->tty);
446         if (ipw->network != NULL)
447                 ipwireless_network_free(ipw->network);
448         if (ipw->hardware != NULL)
449                 ipwireless_hardware_free(ipw->hardware);
450         kfree(ipw);
451 }
452
453 static struct pcmcia_driver me = {
454         .owner          = THIS_MODULE,
455         .probe          = ipwireless_attach,
456         .remove         = ipwireless_detach,
457         .drv = { .name  = IPWIRELESS_PCCARD_NAME },
458         .id_table       = ipw_ids
459 };
460
461 /*
462  * Module insertion : initialisation of the module.
463  * Register the card with cardmgr...
464  */
465 static int __init init_ipwireless(void)
466 {
467         int ret;
468
469         printk(KERN_INFO IPWIRELESS_PCCARD_NAME " "
470                IPWIRELESS_PCMCIA_VERSION " by " IPWIRELESS_PCMCIA_AUTHOR "\n");
471
472         ret = ipwireless_tty_init();
473         if (ret != 0)
474                 return ret;
475
476         ret = pcmcia_register_driver(&me);
477         if (ret != 0)
478                 ipwireless_tty_release();
479
480         return ret;
481 }
482
483 /*
484  * Module removal
485  */
486 static void __exit exit_ipwireless(void)
487 {
488         printk(KERN_INFO IPWIRELESS_PCCARD_NAME " "
489                         IPWIRELESS_PCMCIA_VERSION " removed\n");
490
491         pcmcia_unregister_driver(&me);
492         ipwireless_tty_release();
493 }
494
495 module_init(init_ipwireless);
496 module_exit(exit_ipwireless);
497
498 MODULE_AUTHOR(IPWIRELESS_PCMCIA_AUTHOR);
499 MODULE_DESCRIPTION(IPWIRELESS_PCCARD_NAME " " IPWIRELESS_PCMCIA_VERSION);
500 MODULE_LICENSE("GPL");