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 | ||
1da177e4 LT |
46 | #include <pcmcia/cs_types.h> |
47 | #include <pcmcia/cs.h> | |
48 | #include <pcmcia/cistpl.h> | |
49 | #include <pcmcia/ds.h> | |
50 | ||
51 | #include <asm/io.h> | |
52 | #include <asm/system.h> | |
53 | ||
54 | #define VERSION "arcnet: COM20020 PCMCIA support loaded.\n" | |
55 | ||
56 | #ifdef PCMCIA_DEBUG | |
57 | ||
58 | static int pc_debug = PCMCIA_DEBUG; | |
59 | module_param(pc_debug, int, 0); | |
60 | #define DEBUG(n, args...) if (pc_debug>(n)) printk(KERN_DEBUG args) | |
61 | ||
62 | static void regdump(struct net_device *dev) | |
63 | { | |
64 | int ioaddr = dev->base_addr; | |
65 | int count; | |
66 | ||
67 | printk("com20020 register dump:\n"); | |
68 | for (count = ioaddr; count < ioaddr + 16; count++) | |
69 | { | |
70 | if (!(count % 16)) | |
71 | printk("\n%04X: ", count); | |
72 | printk("%02X ", inb(count)); | |
73 | } | |
74 | printk("\n"); | |
75 | ||
76 | printk("buffer0 dump:\n"); | |
77 | /* set up the address register */ | |
78 | count = 0; | |
79 | outb((count >> 8) | RDDATAflag | AUTOINCflag, _ADDR_HI); | |
80 | outb(count & 0xff, _ADDR_LO); | |
81 | ||
82 | for (count = 0; count < 256+32; count++) | |
83 | { | |
84 | if (!(count % 16)) | |
85 | printk("\n%04X: ", count); | |
86 | ||
87 | /* copy the data */ | |
88 | printk("%02X ", inb(_MEMDATA)); | |
89 | } | |
90 | printk("\n"); | |
91 | } | |
92 | ||
93 | #else | |
94 | ||
95 | #define DEBUG(n, args...) do { } while (0) | |
96 | static inline void regdump(struct net_device *dev) { } | |
97 | ||
98 | #endif | |
99 | ||
100 | ||
101 | /*====================================================================*/ | |
102 | ||
103 | /* Parameters that can be set with 'insmod' */ | |
104 | ||
105 | static int node; | |
106 | static int timeout = 3; | |
107 | static int backplane; | |
108 | static int clockp; | |
109 | static int clockm; | |
110 | ||
111 | module_param(node, int, 0); | |
112 | module_param(timeout, int, 0); | |
113 | module_param(backplane, int, 0); | |
114 | module_param(clockp, int, 0); | |
115 | module_param(clockm, int, 0); | |
116 | ||
117 | MODULE_LICENSE("GPL"); | |
118 | ||
119 | /*====================================================================*/ | |
120 | ||
121 | static void com20020_config(dev_link_t *link); | |
122 | static void com20020_release(dev_link_t *link); | |
1da177e4 | 123 | |
cc3b4866 | 124 | static void com20020_detach(struct pcmcia_device *p_dev); |
1da177e4 | 125 | |
1da177e4 LT |
126 | /*====================================================================*/ |
127 | ||
128 | typedef struct com20020_dev_t { | |
129 | struct net_device *dev; | |
130 | dev_node_t node; | |
131 | } com20020_dev_t; | |
132 | ||
133 | /*====================================================================== | |
134 | ||
135 | com20020_attach() creates an "instance" of the driver, allocating | |
136 | local data structures for one device. The device is registered | |
137 | with Card Services. | |
138 | ||
139 | ======================================================================*/ | |
140 | ||
f8cfa618 | 141 | static int com20020_attach(struct pcmcia_device *p_dev) |
1da177e4 | 142 | { |
1da177e4 LT |
143 | dev_link_t *link; |
144 | com20020_dev_t *info; | |
145 | struct net_device *dev; | |
1da177e4 | 146 | struct arcnet_local *lp; |
f8cfa618 | 147 | |
1da177e4 LT |
148 | DEBUG(0, "com20020_attach()\n"); |
149 | ||
150 | /* Create new network device */ | |
151 | link = kmalloc(sizeof(struct dev_link_t), GFP_KERNEL); | |
152 | if (!link) | |
f8cfa618 | 153 | return -ENOMEM; |
1da177e4 LT |
154 | |
155 | info = kmalloc(sizeof(struct com20020_dev_t), GFP_KERNEL); | |
156 | if (!info) | |
157 | goto fail_alloc_info; | |
158 | ||
159 | dev = alloc_arcdev(""); | |
160 | if (!dev) | |
161 | goto fail_alloc_dev; | |
162 | ||
163 | memset(info, 0, sizeof(struct com20020_dev_t)); | |
164 | memset(link, 0, sizeof(struct dev_link_t)); | |
165 | lp = dev->priv; | |
166 | lp->timeout = timeout; | |
167 | lp->backplane = backplane; | |
168 | lp->clockp = clockp; | |
169 | lp->clockm = clockm & 3; | |
170 | lp->hw.owner = THIS_MODULE; | |
171 | ||
172 | /* fill in our module parameters as defaults */ | |
173 | dev->dev_addr[0] = node; | |
174 | ||
175 | link->io.Attributes1 = IO_DATA_PATH_WIDTH_8; | |
176 | link->io.NumPorts1 = 16; | |
177 | link->io.IOAddrLines = 16; | |
178 | link->irq.Attributes = IRQ_TYPE_EXCLUSIVE; | |
179 | link->irq.IRQInfo1 = IRQ_LEVEL_ID; | |
180 | link->conf.Attributes = CONF_ENABLE_IRQ; | |
181 | link->conf.Vcc = 50; | |
182 | link->conf.IntType = INT_MEMORY_AND_IO; | |
183 | link->conf.Present = PRESENT_OPTION; | |
184 | ||
1da177e4 LT |
185 | link->irq.Instance = info->dev = dev; |
186 | link->priv = info; | |
187 | ||
f8cfa618 DB |
188 | link->state |= DEV_PRESENT; |
189 | com20020_config(link); | |
1da177e4 | 190 | |
f8cfa618 | 191 | return 0; |
1da177e4 LT |
192 | |
193 | fail_alloc_dev: | |
194 | kfree(info); | |
195 | fail_alloc_info: | |
196 | kfree(link); | |
f8cfa618 | 197 | return -ENOMEM; |
1da177e4 LT |
198 | } /* com20020_attach */ |
199 | ||
200 | /*====================================================================== | |
201 | ||
202 | This deletes a driver "instance". The device is de-registered | |
203 | with Card Services. If it has been released, all local data | |
204 | structures are freed. Otherwise, the structures will be freed | |
205 | when the device is released. | |
206 | ||
207 | ======================================================================*/ | |
208 | ||
cc3b4866 | 209 | static void com20020_detach(struct pcmcia_device *p_dev) |
1da177e4 | 210 | { |
cc3b4866 | 211 | dev_link_t *link = dev_to_instance(p_dev); |
1da177e4 | 212 | struct com20020_dev_t *info = link->priv; |
b4635811 DB |
213 | struct net_device *dev = info->dev; |
214 | ||
1da177e4 LT |
215 | DEBUG(1,"detach...\n"); |
216 | ||
217 | DEBUG(0, "com20020_detach(0x%p)\n", link); | |
218 | ||
1da177e4 LT |
219 | if (link->dev) { |
220 | DEBUG(1,"unregister...\n"); | |
221 | ||
222 | unregister_netdev(dev); | |
b4635811 | 223 | |
1da177e4 LT |
224 | /* |
225 | * this is necessary because we register our IRQ separately | |
226 | * from card services. | |
227 | */ | |
228 | if (dev->irq) | |
229 | free_irq(dev->irq, dev); | |
230 | } | |
231 | ||
232 | if (link->state & DEV_CONFIG) | |
233 | com20020_release(link); | |
234 | ||
1da177e4 LT |
235 | /* Unlink device structure, free bits */ |
236 | DEBUG(1,"unlinking...\n"); | |
1da177e4 LT |
237 | if (link->priv) |
238 | { | |
239 | dev = info->dev; | |
240 | if (dev) | |
241 | { | |
242 | DEBUG(1,"kfree...\n"); | |
243 | free_netdev(dev); | |
244 | } | |
245 | DEBUG(1,"kfree2...\n"); | |
246 | kfree(info); | |
247 | } | |
248 | DEBUG(1,"kfree3...\n"); | |
249 | kfree(link); | |
250 | ||
251 | } /* com20020_detach */ | |
252 | ||
253 | /*====================================================================== | |
254 | ||
255 | com20020_config() is scheduled to run after a CARD_INSERTION event | |
256 | is received, to configure the PCMCIA socket, and to make the | |
257 | device available to the system. | |
258 | ||
259 | ======================================================================*/ | |
260 | ||
261 | #define CS_CHECK(fn, ret) \ | |
262 | do { last_fn = (fn); if ((last_ret = (ret)) != 0) goto cs_failed; } while (0) | |
263 | ||
264 | static void com20020_config(dev_link_t *link) | |
265 | { | |
266 | struct arcnet_local *lp; | |
267 | client_handle_t handle; | |
268 | tuple_t tuple; | |
269 | cisparse_t parse; | |
270 | com20020_dev_t *info; | |
271 | struct net_device *dev; | |
272 | int i, last_ret, last_fn; | |
273 | u_char buf[64]; | |
274 | int ioaddr; | |
275 | ||
276 | handle = link->handle; | |
277 | info = link->priv; | |
278 | dev = info->dev; | |
279 | ||
280 | DEBUG(1,"config...\n"); | |
281 | ||
282 | DEBUG(0, "com20020_config(0x%p)\n", link); | |
283 | ||
284 | tuple.Attributes = 0; | |
285 | tuple.TupleData = buf; | |
286 | tuple.TupleDataMax = 64; | |
287 | tuple.TupleOffset = 0; | |
288 | tuple.DesiredTuple = CISTPL_CONFIG; | |
289 | CS_CHECK(GetFirstTuple, pcmcia_get_first_tuple(handle, &tuple)); | |
290 | CS_CHECK(GetTupleData, pcmcia_get_tuple_data(handle, &tuple)); | |
291 | CS_CHECK(ParseTuple, pcmcia_parse_tuple(handle, &tuple, &parse)); | |
292 | link->conf.ConfigBase = parse.config.base; | |
293 | ||
294 | /* Configure card */ | |
295 | link->state |= DEV_CONFIG; | |
296 | ||
297 | DEBUG(1,"arcnet: baseport1 is %Xh\n", link->io.BasePort1); | |
298 | i = !CS_SUCCESS; | |
299 | if (!link->io.BasePort1) | |
300 | { | |
301 | for (ioaddr = 0x100; ioaddr < 0x400; ioaddr += 0x10) | |
302 | { | |
303 | link->io.BasePort1 = ioaddr; | |
304 | i = pcmcia_request_io(link->handle, &link->io); | |
305 | if (i == CS_SUCCESS) | |
306 | break; | |
307 | } | |
308 | } | |
309 | else | |
310 | i = pcmcia_request_io(link->handle, &link->io); | |
311 | ||
312 | if (i != CS_SUCCESS) | |
313 | { | |
314 | DEBUG(1,"arcnet: requestIO failed totally!\n"); | |
315 | goto failed; | |
316 | } | |
317 | ||
318 | ioaddr = dev->base_addr = link->io.BasePort1; | |
319 | DEBUG(1,"arcnet: got ioaddr %Xh\n", ioaddr); | |
320 | ||
321 | DEBUG(1,"arcnet: request IRQ %d (%Xh/%Xh)\n", | |
322 | link->irq.AssignedIRQ, | |
323 | link->irq.IRQInfo1, link->irq.IRQInfo2); | |
324 | i = pcmcia_request_irq(link->handle, &link->irq); | |
325 | if (i != CS_SUCCESS) | |
326 | { | |
327 | DEBUG(1,"arcnet: requestIRQ failed totally!\n"); | |
328 | goto failed; | |
329 | } | |
330 | ||
331 | dev->irq = link->irq.AssignedIRQ; | |
332 | ||
333 | CS_CHECK(RequestConfiguration, pcmcia_request_configuration(link->handle, &link->conf)); | |
334 | ||
335 | if (com20020_check(dev)) | |
336 | { | |
337 | regdump(dev); | |
338 | goto failed; | |
339 | } | |
340 | ||
341 | lp = dev->priv; | |
342 | lp->card_name = "PCMCIA COM20020"; | |
343 | lp->card_flags = ARC_CAN_10MBIT; /* pretend all of them can 10Mbit */ | |
344 | ||
345 | link->dev = &info->node; | |
346 | link->state &= ~DEV_CONFIG_PENDING; | |
347 | SET_NETDEV_DEV(dev, &handle_to_dev(handle)); | |
348 | ||
349 | i = com20020_found(dev, 0); /* calls register_netdev */ | |
350 | ||
351 | if (i != 0) { | |
352 | DEBUG(1,KERN_NOTICE "com20020_cs: com20020_found() failed\n"); | |
353 | link->dev = NULL; | |
354 | goto failed; | |
355 | } | |
356 | ||
357 | strcpy(info->node.dev_name, dev->name); | |
358 | ||
359 | DEBUG(1,KERN_INFO "%s: port %#3lx, irq %d\n", | |
360 | dev->name, dev->base_addr, dev->irq); | |
361 | return; | |
362 | ||
363 | cs_failed: | |
364 | cs_error(link->handle, last_fn, last_ret); | |
365 | failed: | |
366 | DEBUG(1,"com20020_config failed...\n"); | |
367 | com20020_release(link); | |
368 | } /* com20020_config */ | |
369 | ||
370 | /*====================================================================== | |
371 | ||
372 | After a card is removed, com20020_release() will unregister the net | |
373 | device, and release the PCMCIA configuration. If the device is | |
374 | still open, this will be postponed until it is closed. | |
375 | ||
376 | ======================================================================*/ | |
377 | ||
378 | static void com20020_release(dev_link_t *link) | |
379 | { | |
5f2a71fc DB |
380 | DEBUG(0, "com20020_release(0x%p)\n", link); |
381 | pcmcia_disable_device(link->handle); | |
1da177e4 LT |
382 | } |
383 | ||
98e4c28b DB |
384 | static int com20020_suspend(struct pcmcia_device *p_dev) |
385 | { | |
386 | dev_link_t *link = dev_to_instance(p_dev); | |
387 | com20020_dev_t *info = link->priv; | |
388 | struct net_device *dev = info->dev; | |
389 | ||
390 | link->state |= DEV_SUSPEND; | |
391 | if (link->state & DEV_CONFIG) { | |
392 | if (link->open) { | |
393 | netif_device_detach(dev); | |
394 | } | |
395 | pcmcia_release_configuration(link->handle); | |
396 | } | |
397 | ||
398 | return 0; | |
399 | } | |
400 | ||
401 | static int com20020_resume(struct pcmcia_device *p_dev) | |
402 | { | |
403 | dev_link_t *link = dev_to_instance(p_dev); | |
404 | com20020_dev_t *info = link->priv; | |
405 | struct net_device *dev = info->dev; | |
406 | ||
407 | link->state &= ~DEV_SUSPEND; | |
408 | if (link->state & DEV_CONFIG) { | |
409 | pcmcia_request_configuration(link->handle, &link->conf); | |
410 | if (link->open) { | |
411 | int ioaddr = dev->base_addr; | |
412 | struct arcnet_local *lp = dev->priv; | |
413 | ARCRESET; | |
414 | } | |
415 | } | |
416 | ||
417 | return 0; | |
418 | } | |
419 | ||
7fb22bb4 DB |
420 | static struct pcmcia_device_id com20020_ids[] = { |
421 | PCMCIA_DEVICE_PROD_ID12("Contemporary Control Systems, Inc.", "PCM20 Arcnet Adapter", 0x59991666, 0x95dfffaf), | |
422 | PCMCIA_DEVICE_NULL | |
423 | }; | |
424 | MODULE_DEVICE_TABLE(pcmcia, com20020_ids); | |
1da177e4 LT |
425 | |
426 | static struct pcmcia_driver com20020_cs_driver = { | |
427 | .owner = THIS_MODULE, | |
428 | .drv = { | |
429 | .name = "com20020_cs", | |
430 | }, | |
f8cfa618 | 431 | .probe = com20020_attach, |
cc3b4866 | 432 | .remove = com20020_detach, |
7fb22bb4 | 433 | .id_table = com20020_ids, |
98e4c28b DB |
434 | .suspend = com20020_suspend, |
435 | .resume = com20020_resume, | |
1da177e4 LT |
436 | }; |
437 | ||
438 | static int __init init_com20020_cs(void) | |
439 | { | |
440 | return pcmcia_register_driver(&com20020_cs_driver); | |
441 | } | |
442 | ||
443 | static void __exit exit_com20020_cs(void) | |
444 | { | |
445 | pcmcia_unregister_driver(&com20020_cs_driver); | |
1da177e4 LT |
446 | } |
447 | ||
448 | module_init(init_com20020_cs); | |
449 | module_exit(exit_com20020_cs); |