Commit | Line | Data |
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1da177e4 LT |
1 | /* |
2 | * Linux ARCnet driver - COM20020 PCMCIA support | |
3 | * | |
4 | * Written 1994-1999 by Avery Pennarun, | |
5 | * based on an ISA version by David Woodhouse. | |
6 | * Derived from ibmtr_cs.c by Steve Kipisz (pcmcia-cs 3.1.4) | |
7 | * which was derived from pcnet_cs.c by David Hinds. | |
8 | * Some additional portions derived from skeleton.c by Donald Becker. | |
9 | * | |
10 | * Special thanks to Contemporary Controls, Inc. (www.ccontrols.com) | |
11 | * for sponsoring the further development of this driver. | |
12 | * | |
13 | * ********************** | |
14 | * | |
15 | * The original copyright of skeleton.c was as follows: | |
16 | * | |
17 | * skeleton.c Written 1993 by Donald Becker. | |
18 | * Copyright 1993 United States Government as represented by the | |
19 | * Director, National Security Agency. This software may only be used | |
20 | * and distributed according to the terms of the GNU General Public License as | |
21 | * modified by SRC, incorporated herein by reference. | |
22 | * | |
23 | * ********************** | |
24 | * Changes: | |
25 | * Arnaldo Carvalho de Melo <acme@conectiva.com.br> - 08/08/2000 | |
26 | * - reorganize kmallocs in com20020_attach, checking all for failure | |
27 | * and releasing the previous allocations if one fails | |
28 | * ********************** | |
29 | * | |
30 | * For more details, see drivers/net/arcnet.c | |
31 | * | |
32 | * ********************** | |
33 | */ | |
34 | #include <linux/kernel.h> | |
35 | #include <linux/init.h> | |
36 | #include <linux/ptrace.h> | |
37 | #include <linux/slab.h> | |
38 | #include <linux/string.h> | |
39 | #include <linux/timer.h> | |
40 | #include <linux/delay.h> | |
41 | #include <linux/module.h> | |
42 | #include <linux/netdevice.h> | |
43 | #include <linux/arcdevice.h> | |
44 | #include <linux/com20020.h> | |
45 | ||
46 | #include <pcmcia/version.h> | |
47 | #include <pcmcia/cs_types.h> | |
48 | #include <pcmcia/cs.h> | |
49 | #include <pcmcia/cistpl.h> | |
50 | #include <pcmcia/ds.h> | |
51 | ||
52 | #include <asm/io.h> | |
53 | #include <asm/system.h> | |
54 | ||
55 | #define VERSION "arcnet: COM20020 PCMCIA support loaded.\n" | |
56 | ||
57 | #ifdef PCMCIA_DEBUG | |
58 | ||
59 | static int pc_debug = PCMCIA_DEBUG; | |
60 | module_param(pc_debug, int, 0); | |
61 | #define DEBUG(n, args...) if (pc_debug>(n)) printk(KERN_DEBUG args) | |
62 | ||
63 | static void regdump(struct net_device *dev) | |
64 | { | |
65 | int ioaddr = dev->base_addr; | |
66 | int count; | |
67 | ||
68 | printk("com20020 register dump:\n"); | |
69 | for (count = ioaddr; count < ioaddr + 16; count++) | |
70 | { | |
71 | if (!(count % 16)) | |
72 | printk("\n%04X: ", count); | |
73 | printk("%02X ", inb(count)); | |
74 | } | |
75 | printk("\n"); | |
76 | ||
77 | printk("buffer0 dump:\n"); | |
78 | /* set up the address register */ | |
79 | count = 0; | |
80 | outb((count >> 8) | RDDATAflag | AUTOINCflag, _ADDR_HI); | |
81 | outb(count & 0xff, _ADDR_LO); | |
82 | ||
83 | for (count = 0; count < 256+32; count++) | |
84 | { | |
85 | if (!(count % 16)) | |
86 | printk("\n%04X: ", count); | |
87 | ||
88 | /* copy the data */ | |
89 | printk("%02X ", inb(_MEMDATA)); | |
90 | } | |
91 | printk("\n"); | |
92 | } | |
93 | ||
94 | #else | |
95 | ||
96 | #define DEBUG(n, args...) do { } while (0) | |
97 | static inline void regdump(struct net_device *dev) { } | |
98 | ||
99 | #endif | |
100 | ||
101 | ||
102 | /*====================================================================*/ | |
103 | ||
104 | /* Parameters that can be set with 'insmod' */ | |
105 | ||
106 | static int node; | |
107 | static int timeout = 3; | |
108 | static int backplane; | |
109 | static int clockp; | |
110 | static int clockm; | |
111 | ||
112 | module_param(node, int, 0); | |
113 | module_param(timeout, int, 0); | |
114 | module_param(backplane, int, 0); | |
115 | module_param(clockp, int, 0); | |
116 | module_param(clockm, int, 0); | |
117 | ||
118 | MODULE_LICENSE("GPL"); | |
119 | ||
120 | /*====================================================================*/ | |
121 | ||
122 | static void com20020_config(dev_link_t *link); | |
123 | static void com20020_release(dev_link_t *link); | |
124 | static int com20020_event(event_t event, int priority, | |
125 | event_callback_args_t *args); | |
126 | ||
127 | static dev_info_t dev_info = "com20020_cs"; | |
128 | ||
129 | static dev_link_t *com20020_attach(void); | |
130 | static void com20020_detach(dev_link_t *); | |
131 | ||
132 | static dev_link_t *dev_list; | |
133 | ||
134 | /*====================================================================*/ | |
135 | ||
136 | typedef struct com20020_dev_t { | |
137 | struct net_device *dev; | |
138 | dev_node_t node; | |
139 | } com20020_dev_t; | |
140 | ||
141 | /*====================================================================== | |
142 | ||
143 | com20020_attach() creates an "instance" of the driver, allocating | |
144 | local data structures for one device. The device is registered | |
145 | with Card Services. | |
146 | ||
147 | ======================================================================*/ | |
148 | ||
149 | static dev_link_t *com20020_attach(void) | |
150 | { | |
151 | client_reg_t client_reg; | |
152 | dev_link_t *link; | |
153 | com20020_dev_t *info; | |
154 | struct net_device *dev; | |
155 | int ret; | |
156 | struct arcnet_local *lp; | |
157 | ||
158 | DEBUG(0, "com20020_attach()\n"); | |
159 | ||
160 | /* Create new network device */ | |
161 | link = kmalloc(sizeof(struct dev_link_t), GFP_KERNEL); | |
162 | if (!link) | |
163 | return NULL; | |
164 | ||
165 | info = kmalloc(sizeof(struct com20020_dev_t), GFP_KERNEL); | |
166 | if (!info) | |
167 | goto fail_alloc_info; | |
168 | ||
169 | dev = alloc_arcdev(""); | |
170 | if (!dev) | |
171 | goto fail_alloc_dev; | |
172 | ||
173 | memset(info, 0, sizeof(struct com20020_dev_t)); | |
174 | memset(link, 0, sizeof(struct dev_link_t)); | |
175 | lp = dev->priv; | |
176 | lp->timeout = timeout; | |
177 | lp->backplane = backplane; | |
178 | lp->clockp = clockp; | |
179 | lp->clockm = clockm & 3; | |
180 | lp->hw.owner = THIS_MODULE; | |
181 | ||
182 | /* fill in our module parameters as defaults */ | |
183 | dev->dev_addr[0] = node; | |
184 | ||
185 | link->io.Attributes1 = IO_DATA_PATH_WIDTH_8; | |
186 | link->io.NumPorts1 = 16; | |
187 | link->io.IOAddrLines = 16; | |
188 | link->irq.Attributes = IRQ_TYPE_EXCLUSIVE; | |
189 | link->irq.IRQInfo1 = IRQ_LEVEL_ID; | |
190 | link->conf.Attributes = CONF_ENABLE_IRQ; | |
191 | link->conf.Vcc = 50; | |
192 | link->conf.IntType = INT_MEMORY_AND_IO; | |
193 | link->conf.Present = PRESENT_OPTION; | |
194 | ||
195 | ||
196 | link->irq.Instance = info->dev = dev; | |
197 | link->priv = info; | |
198 | ||
199 | /* Register with Card Services */ | |
200 | link->next = dev_list; | |
201 | dev_list = link; | |
202 | client_reg.dev_info = &dev_info; | |
203 | client_reg.EventMask = | |
204 | CS_EVENT_CARD_INSERTION | CS_EVENT_CARD_REMOVAL | | |
205 | CS_EVENT_RESET_PHYSICAL | CS_EVENT_CARD_RESET | | |
206 | CS_EVENT_PM_SUSPEND | CS_EVENT_PM_RESUME; | |
207 | client_reg.event_handler = &com20020_event; | |
208 | client_reg.Version = 0x0210; | |
209 | client_reg.event_callback_args.client_data = link; | |
210 | ret = pcmcia_register_client(&link->handle, &client_reg); | |
211 | if (ret != 0) { | |
212 | cs_error(link->handle, RegisterClient, ret); | |
213 | com20020_detach(link); | |
214 | return NULL; | |
215 | } | |
216 | ||
217 | return link; | |
218 | ||
219 | fail_alloc_dev: | |
220 | kfree(info); | |
221 | fail_alloc_info: | |
222 | kfree(link); | |
223 | return NULL; | |
224 | } /* com20020_attach */ | |
225 | ||
226 | /*====================================================================== | |
227 | ||
228 | This deletes a driver "instance". The device is de-registered | |
229 | with Card Services. If it has been released, all local data | |
230 | structures are freed. Otherwise, the structures will be freed | |
231 | when the device is released. | |
232 | ||
233 | ======================================================================*/ | |
234 | ||
235 | static void com20020_detach(dev_link_t *link) | |
236 | { | |
237 | struct com20020_dev_t *info = link->priv; | |
238 | dev_link_t **linkp; | |
239 | struct net_device *dev; | |
240 | ||
241 | DEBUG(1,"detach...\n"); | |
242 | ||
243 | DEBUG(0, "com20020_detach(0x%p)\n", link); | |
244 | ||
245 | /* Locate device structure */ | |
246 | for (linkp = &dev_list; *linkp; linkp = &(*linkp)->next) | |
247 | if (*linkp == link) break; | |
248 | if (*linkp == NULL) | |
249 | return; | |
250 | ||
251 | dev = info->dev; | |
252 | ||
253 | if (link->dev) { | |
254 | DEBUG(1,"unregister...\n"); | |
255 | ||
256 | unregister_netdev(dev); | |
257 | ||
258 | /* | |
259 | * this is necessary because we register our IRQ separately | |
260 | * from card services. | |
261 | */ | |
262 | if (dev->irq) | |
263 | free_irq(dev->irq, dev); | |
264 | } | |
265 | ||
266 | if (link->state & DEV_CONFIG) | |
267 | com20020_release(link); | |
268 | ||
269 | if (link->handle) | |
270 | pcmcia_deregister_client(link->handle); | |
271 | ||
272 | /* Unlink device structure, free bits */ | |
273 | DEBUG(1,"unlinking...\n"); | |
274 | *linkp = link->next; | |
275 | if (link->priv) | |
276 | { | |
277 | dev = info->dev; | |
278 | if (dev) | |
279 | { | |
280 | DEBUG(1,"kfree...\n"); | |
281 | free_netdev(dev); | |
282 | } | |
283 | DEBUG(1,"kfree2...\n"); | |
284 | kfree(info); | |
285 | } | |
286 | DEBUG(1,"kfree3...\n"); | |
287 | kfree(link); | |
288 | ||
289 | } /* com20020_detach */ | |
290 | ||
291 | /*====================================================================== | |
292 | ||
293 | com20020_config() is scheduled to run after a CARD_INSERTION event | |
294 | is received, to configure the PCMCIA socket, and to make the | |
295 | device available to the system. | |
296 | ||
297 | ======================================================================*/ | |
298 | ||
299 | #define CS_CHECK(fn, ret) \ | |
300 | do { last_fn = (fn); if ((last_ret = (ret)) != 0) goto cs_failed; } while (0) | |
301 | ||
302 | static void com20020_config(dev_link_t *link) | |
303 | { | |
304 | struct arcnet_local *lp; | |
305 | client_handle_t handle; | |
306 | tuple_t tuple; | |
307 | cisparse_t parse; | |
308 | com20020_dev_t *info; | |
309 | struct net_device *dev; | |
310 | int i, last_ret, last_fn; | |
311 | u_char buf[64]; | |
312 | int ioaddr; | |
313 | ||
314 | handle = link->handle; | |
315 | info = link->priv; | |
316 | dev = info->dev; | |
317 | ||
318 | DEBUG(1,"config...\n"); | |
319 | ||
320 | DEBUG(0, "com20020_config(0x%p)\n", link); | |
321 | ||
322 | tuple.Attributes = 0; | |
323 | tuple.TupleData = buf; | |
324 | tuple.TupleDataMax = 64; | |
325 | tuple.TupleOffset = 0; | |
326 | tuple.DesiredTuple = CISTPL_CONFIG; | |
327 | CS_CHECK(GetFirstTuple, pcmcia_get_first_tuple(handle, &tuple)); | |
328 | CS_CHECK(GetTupleData, pcmcia_get_tuple_data(handle, &tuple)); | |
329 | CS_CHECK(ParseTuple, pcmcia_parse_tuple(handle, &tuple, &parse)); | |
330 | link->conf.ConfigBase = parse.config.base; | |
331 | ||
332 | /* Configure card */ | |
333 | link->state |= DEV_CONFIG; | |
334 | ||
335 | DEBUG(1,"arcnet: baseport1 is %Xh\n", link->io.BasePort1); | |
336 | i = !CS_SUCCESS; | |
337 | if (!link->io.BasePort1) | |
338 | { | |
339 | for (ioaddr = 0x100; ioaddr < 0x400; ioaddr += 0x10) | |
340 | { | |
341 | link->io.BasePort1 = ioaddr; | |
342 | i = pcmcia_request_io(link->handle, &link->io); | |
343 | if (i == CS_SUCCESS) | |
344 | break; | |
345 | } | |
346 | } | |
347 | else | |
348 | i = pcmcia_request_io(link->handle, &link->io); | |
349 | ||
350 | if (i != CS_SUCCESS) | |
351 | { | |
352 | DEBUG(1,"arcnet: requestIO failed totally!\n"); | |
353 | goto failed; | |
354 | } | |
355 | ||
356 | ioaddr = dev->base_addr = link->io.BasePort1; | |
357 | DEBUG(1,"arcnet: got ioaddr %Xh\n", ioaddr); | |
358 | ||
359 | DEBUG(1,"arcnet: request IRQ %d (%Xh/%Xh)\n", | |
360 | link->irq.AssignedIRQ, | |
361 | link->irq.IRQInfo1, link->irq.IRQInfo2); | |
362 | i = pcmcia_request_irq(link->handle, &link->irq); | |
363 | if (i != CS_SUCCESS) | |
364 | { | |
365 | DEBUG(1,"arcnet: requestIRQ failed totally!\n"); | |
366 | goto failed; | |
367 | } | |
368 | ||
369 | dev->irq = link->irq.AssignedIRQ; | |
370 | ||
371 | CS_CHECK(RequestConfiguration, pcmcia_request_configuration(link->handle, &link->conf)); | |
372 | ||
373 | if (com20020_check(dev)) | |
374 | { | |
375 | regdump(dev); | |
376 | goto failed; | |
377 | } | |
378 | ||
379 | lp = dev->priv; | |
380 | lp->card_name = "PCMCIA COM20020"; | |
381 | lp->card_flags = ARC_CAN_10MBIT; /* pretend all of them can 10Mbit */ | |
382 | ||
383 | link->dev = &info->node; | |
384 | link->state &= ~DEV_CONFIG_PENDING; | |
385 | SET_NETDEV_DEV(dev, &handle_to_dev(handle)); | |
386 | ||
387 | i = com20020_found(dev, 0); /* calls register_netdev */ | |
388 | ||
389 | if (i != 0) { | |
390 | DEBUG(1,KERN_NOTICE "com20020_cs: com20020_found() failed\n"); | |
391 | link->dev = NULL; | |
392 | goto failed; | |
393 | } | |
394 | ||
395 | strcpy(info->node.dev_name, dev->name); | |
396 | ||
397 | DEBUG(1,KERN_INFO "%s: port %#3lx, irq %d\n", | |
398 | dev->name, dev->base_addr, dev->irq); | |
399 | return; | |
400 | ||
401 | cs_failed: | |
402 | cs_error(link->handle, last_fn, last_ret); | |
403 | failed: | |
404 | DEBUG(1,"com20020_config failed...\n"); | |
405 | com20020_release(link); | |
406 | } /* com20020_config */ | |
407 | ||
408 | /*====================================================================== | |
409 | ||
410 | After a card is removed, com20020_release() will unregister the net | |
411 | device, and release the PCMCIA configuration. If the device is | |
412 | still open, this will be postponed until it is closed. | |
413 | ||
414 | ======================================================================*/ | |
415 | ||
416 | static void com20020_release(dev_link_t *link) | |
417 | { | |
418 | ||
419 | DEBUG(1,"release...\n"); | |
420 | ||
421 | DEBUG(0, "com20020_release(0x%p)\n", link); | |
422 | ||
423 | pcmcia_release_configuration(link->handle); | |
424 | pcmcia_release_io(link->handle, &link->io); | |
425 | pcmcia_release_irq(link->handle, &link->irq); | |
426 | ||
427 | link->state &= ~(DEV_CONFIG | DEV_RELEASE_PENDING); | |
428 | } | |
429 | ||
430 | /*====================================================================== | |
431 | ||
432 | The card status event handler. Mostly, this schedules other | |
433 | stuff to run after an event is received. A CARD_REMOVAL event | |
434 | also sets some flags to discourage the net drivers from trying | |
435 | to talk to the card any more. | |
436 | ||
437 | ======================================================================*/ | |
438 | ||
439 | static int com20020_event(event_t event, int priority, | |
440 | event_callback_args_t *args) | |
441 | { | |
442 | dev_link_t *link = args->client_data; | |
443 | com20020_dev_t *info = link->priv; | |
444 | struct net_device *dev = info->dev; | |
445 | ||
446 | DEBUG(1, "com20020_event(0x%06x)\n", event); | |
447 | ||
448 | switch (event) { | |
449 | case CS_EVENT_CARD_REMOVAL: | |
450 | link->state &= ~DEV_PRESENT; | |
451 | if (link->state & DEV_CONFIG) | |
452 | netif_device_detach(dev); | |
453 | break; | |
454 | case CS_EVENT_CARD_INSERTION: | |
455 | link->state |= DEV_PRESENT; | |
456 | com20020_config(link); | |
457 | break; | |
458 | case CS_EVENT_PM_SUSPEND: | |
459 | link->state |= DEV_SUSPEND; | |
460 | /* Fall through... */ | |
461 | case CS_EVENT_RESET_PHYSICAL: | |
462 | if (link->state & DEV_CONFIG) { | |
463 | if (link->open) { | |
464 | netif_device_detach(dev); | |
465 | } | |
466 | pcmcia_release_configuration(link->handle); | |
467 | } | |
468 | break; | |
469 | case CS_EVENT_PM_RESUME: | |
470 | link->state &= ~DEV_SUSPEND; | |
471 | /* Fall through... */ | |
472 | case CS_EVENT_CARD_RESET: | |
473 | if (link->state & DEV_CONFIG) { | |
474 | pcmcia_request_configuration(link->handle, &link->conf); | |
475 | if (link->open) { | |
476 | int ioaddr = dev->base_addr; | |
477 | struct arcnet_local *lp = dev->priv; | |
478 | ARCRESET; | |
479 | } | |
480 | } | |
481 | break; | |
482 | } | |
483 | return 0; | |
484 | } /* com20020_event */ | |
485 | ||
486 | ||
487 | ||
488 | static struct pcmcia_driver com20020_cs_driver = { | |
489 | .owner = THIS_MODULE, | |
490 | .drv = { | |
491 | .name = "com20020_cs", | |
492 | }, | |
493 | .attach = com20020_attach, | |
494 | .detach = com20020_detach, | |
495 | }; | |
496 | ||
497 | static int __init init_com20020_cs(void) | |
498 | { | |
499 | return pcmcia_register_driver(&com20020_cs_driver); | |
500 | } | |
501 | ||
502 | static void __exit exit_com20020_cs(void) | |
503 | { | |
504 | pcmcia_unregister_driver(&com20020_cs_driver); | |
505 | BUG_ON(dev_list != NULL); | |
506 | } | |
507 | ||
508 | module_init(init_com20020_cs); | |
509 | module_exit(exit_com20020_cs); |