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.h> |
47 | #include <pcmcia/cistpl.h> | |
48 | #include <pcmcia/ds.h> | |
49 | ||
50 | #include <asm/io.h> | |
51 | #include <asm/system.h> | |
52 | ||
53 | #define VERSION "arcnet: COM20020 PCMCIA support loaded.\n" | |
54 | ||
dd0fab5b | 55 | #ifdef DEBUG |
1da177e4 LT |
56 | |
57 | static void regdump(struct net_device *dev) | |
58 | { | |
59 | int ioaddr = dev->base_addr; | |
60 | int count; | |
61 | ||
62 | printk("com20020 register dump:\n"); | |
63 | for (count = ioaddr; count < ioaddr + 16; count++) | |
64 | { | |
65 | if (!(count % 16)) | |
66 | printk("\n%04X: ", count); | |
67 | printk("%02X ", inb(count)); | |
68 | } | |
69 | printk("\n"); | |
70 | ||
71 | printk("buffer0 dump:\n"); | |
72 | /* set up the address register */ | |
73 | count = 0; | |
74 | outb((count >> 8) | RDDATAflag | AUTOINCflag, _ADDR_HI); | |
75 | outb(count & 0xff, _ADDR_LO); | |
76 | ||
77 | for (count = 0; count < 256+32; count++) | |
78 | { | |
79 | if (!(count % 16)) | |
80 | printk("\n%04X: ", count); | |
81 | ||
82 | /* copy the data */ | |
83 | printk("%02X ", inb(_MEMDATA)); | |
84 | } | |
85 | printk("\n"); | |
86 | } | |
87 | ||
88 | #else | |
89 | ||
1da177e4 LT |
90 | static inline void regdump(struct net_device *dev) { } |
91 | ||
92 | #endif | |
93 | ||
94 | ||
95 | /*====================================================================*/ | |
96 | ||
97 | /* Parameters that can be set with 'insmod' */ | |
98 | ||
99 | static int node; | |
100 | static int timeout = 3; | |
101 | static int backplane; | |
102 | static int clockp; | |
103 | static int clockm; | |
104 | ||
105 | module_param(node, int, 0); | |
106 | module_param(timeout, int, 0); | |
107 | module_param(backplane, int, 0); | |
108 | module_param(clockp, int, 0); | |
109 | module_param(clockm, int, 0); | |
110 | ||
111 | MODULE_LICENSE("GPL"); | |
112 | ||
113 | /*====================================================================*/ | |
114 | ||
15b99ac1 | 115 | static int com20020_config(struct pcmcia_device *link); |
fba395ee | 116 | static void com20020_release(struct pcmcia_device *link); |
1da177e4 | 117 | |
cc3b4866 | 118 | static void com20020_detach(struct pcmcia_device *p_dev); |
1da177e4 | 119 | |
1da177e4 LT |
120 | /*====================================================================*/ |
121 | ||
122 | typedef struct com20020_dev_t { | |
123 | struct net_device *dev; | |
1da177e4 LT |
124 | } com20020_dev_t; |
125 | ||
126 | /*====================================================================== | |
127 | ||
128 | com20020_attach() creates an "instance" of the driver, allocating | |
129 | local data structures for one device. The device is registered | |
130 | with Card Services. | |
131 | ||
132 | ======================================================================*/ | |
133 | ||
15b99ac1 | 134 | static int com20020_probe(struct pcmcia_device *p_dev) |
1da177e4 | 135 | { |
1da177e4 LT |
136 | com20020_dev_t *info; |
137 | struct net_device *dev; | |
1da177e4 | 138 | struct arcnet_local *lp; |
f8cfa618 | 139 | |
dd0fab5b | 140 | dev_dbg(&p_dev->dev, "com20020_attach()\n"); |
1da177e4 LT |
141 | |
142 | /* Create new network device */ | |
dd00cc48 | 143 | info = kzalloc(sizeof(struct com20020_dev_t), GFP_KERNEL); |
1da177e4 LT |
144 | if (!info) |
145 | goto fail_alloc_info; | |
146 | ||
147 | dev = alloc_arcdev(""); | |
148 | if (!dev) | |
149 | goto fail_alloc_dev; | |
150 | ||
4cf1653a | 151 | lp = netdev_priv(dev); |
1da177e4 LT |
152 | lp->timeout = timeout; |
153 | lp->backplane = backplane; | |
154 | lp->clockp = clockp; | |
155 | lp->clockm = clockm & 3; | |
156 | lp->hw.owner = THIS_MODULE; | |
157 | ||
158 | /* fill in our module parameters as defaults */ | |
159 | dev->dev_addr[0] = node; | |
160 | ||
90abdc3b DB |
161 | p_dev->resource[0]->flags |= IO_DATA_PATH_WIDTH_8; |
162 | p_dev->resource[0]->end = 16; | |
fd238232 DB |
163 | p_dev->conf.Attributes = CONF_ENABLE_IRQ; |
164 | p_dev->conf.IntType = INT_MEMORY_AND_IO; | |
1da177e4 | 165 | |
5fa9167a | 166 | info->dev = dev; |
fd238232 | 167 | p_dev->priv = info; |
1da177e4 | 168 | |
15b99ac1 | 169 | return com20020_config(p_dev); |
1da177e4 LT |
170 | |
171 | fail_alloc_dev: | |
172 | kfree(info); | |
173 | fail_alloc_info: | |
f8cfa618 | 174 | return -ENOMEM; |
1da177e4 LT |
175 | } /* com20020_attach */ |
176 | ||
177 | /*====================================================================== | |
178 | ||
179 | This deletes a driver "instance". The device is de-registered | |
180 | with Card Services. If it has been released, all local data | |
181 | structures are freed. Otherwise, the structures will be freed | |
182 | when the device is released. | |
183 | ||
184 | ======================================================================*/ | |
185 | ||
fba395ee | 186 | static void com20020_detach(struct pcmcia_device *link) |
1da177e4 LT |
187 | { |
188 | struct com20020_dev_t *info = link->priv; | |
b4635811 DB |
189 | struct net_device *dev = info->dev; |
190 | ||
dd0fab5b | 191 | dev_dbg(&link->dev, "detach...\n"); |
1da177e4 | 192 | |
dd0fab5b | 193 | dev_dbg(&link->dev, "com20020_detach\n"); |
1da177e4 | 194 | |
c7c2fa07 | 195 | dev_dbg(&link->dev, "unregister...\n"); |
1da177e4 | 196 | |
c7c2fa07 | 197 | unregister_netdev(dev); |
b4635811 | 198 | |
c7c2fa07 DB |
199 | /* |
200 | * this is necessary because we register our IRQ separately | |
201 | * from card services. | |
202 | */ | |
203 | if (dev->irq) | |
1da177e4 | 204 | free_irq(dev->irq, dev); |
1da177e4 | 205 | |
e2d40963 | 206 | com20020_release(link); |
1da177e4 | 207 | |
1da177e4 | 208 | /* Unlink device structure, free bits */ |
dd0fab5b | 209 | dev_dbg(&link->dev, "unlinking...\n"); |
1da177e4 LT |
210 | if (link->priv) |
211 | { | |
212 | dev = info->dev; | |
213 | if (dev) | |
214 | { | |
dd0fab5b | 215 | dev_dbg(&link->dev, "kfree...\n"); |
1da177e4 LT |
216 | free_netdev(dev); |
217 | } | |
dd0fab5b | 218 | dev_dbg(&link->dev, "kfree2...\n"); |
1da177e4 LT |
219 | kfree(info); |
220 | } | |
1da177e4 LT |
221 | |
222 | } /* com20020_detach */ | |
223 | ||
224 | /*====================================================================== | |
225 | ||
226 | com20020_config() is scheduled to run after a CARD_INSERTION event | |
227 | is received, to configure the PCMCIA socket, and to make the | |
228 | device available to the system. | |
229 | ||
230 | ======================================================================*/ | |
231 | ||
15b99ac1 | 232 | static int com20020_config(struct pcmcia_device *link) |
1da177e4 LT |
233 | { |
234 | struct arcnet_local *lp; | |
1da177e4 LT |
235 | com20020_dev_t *info; |
236 | struct net_device *dev; | |
dd0fab5b | 237 | int i, ret; |
1da177e4 LT |
238 | int ioaddr; |
239 | ||
1da177e4 LT |
240 | info = link->priv; |
241 | dev = info->dev; | |
242 | ||
dd0fab5b | 243 | dev_dbg(&link->dev, "config...\n"); |
1da177e4 | 244 | |
dd0fab5b | 245 | dev_dbg(&link->dev, "com20020_config\n"); |
1da177e4 | 246 | |
90abdc3b DB |
247 | dev_dbg(&link->dev, "baseport1 is %Xh\n", |
248 | (unsigned int) link->resource[0]->start); | |
249 | ||
4c89e88b | 250 | i = -ENODEV; |
90abdc3b DB |
251 | link->io_lines = 16; |
252 | ||
253 | if (!link->resource[0]->start) | |
1da177e4 LT |
254 | { |
255 | for (ioaddr = 0x100; ioaddr < 0x400; ioaddr += 0x10) | |
256 | { | |
90abdc3b DB |
257 | link->resource[0]->start = ioaddr; |
258 | i = pcmcia_request_io(link); | |
4c89e88b | 259 | if (i == 0) |
1da177e4 LT |
260 | break; |
261 | } | |
262 | } | |
263 | else | |
90abdc3b | 264 | i = pcmcia_request_io(link); |
1da177e4 | 265 | |
4c89e88b | 266 | if (i != 0) |
1da177e4 | 267 | { |
dd0fab5b | 268 | dev_dbg(&link->dev, "requestIO failed totally!\n"); |
1da177e4 LT |
269 | goto failed; |
270 | } | |
271 | ||
9a017a91 | 272 | ioaddr = dev->base_addr = link->resource[0]->start; |
dd0fab5b | 273 | dev_dbg(&link->dev, "got ioaddr %Xh\n", ioaddr); |
1da177e4 | 274 | |
5fa9167a | 275 | dev_dbg(&link->dev, "request IRQ %d\n", |
eb14120f DB |
276 | link->irq); |
277 | if (!link->irq) | |
1da177e4 | 278 | { |
dd0fab5b | 279 | dev_dbg(&link->dev, "requestIRQ failed totally!\n"); |
1da177e4 LT |
280 | goto failed; |
281 | } | |
282 | ||
eb14120f | 283 | dev->irq = link->irq; |
1da177e4 | 284 | |
dd0fab5b DB |
285 | ret = pcmcia_request_configuration(link, &link->conf); |
286 | if (ret) | |
287 | goto failed; | |
1da177e4 LT |
288 | |
289 | if (com20020_check(dev)) | |
290 | { | |
291 | regdump(dev); | |
292 | goto failed; | |
293 | } | |
294 | ||
4cf1653a | 295 | lp = netdev_priv(dev); |
1da177e4 LT |
296 | lp->card_name = "PCMCIA COM20020"; |
297 | lp->card_flags = ARC_CAN_10MBIT; /* pretend all of them can 10Mbit */ | |
298 | ||
dd2e5a15 | 299 | SET_NETDEV_DEV(dev, &link->dev); |
1da177e4 LT |
300 | |
301 | i = com20020_found(dev, 0); /* calls register_netdev */ | |
302 | ||
303 | if (i != 0) { | |
dd0fab5b DB |
304 | dev_printk(KERN_NOTICE, &link->dev, |
305 | "com20020_cs: com20020_found() failed\n"); | |
1da177e4 LT |
306 | goto failed; |
307 | } | |
308 | ||
dd0fab5b | 309 | dev_dbg(&link->dev,KERN_INFO "%s: port %#3lx, irq %d\n", |
1da177e4 | 310 | dev->name, dev->base_addr, dev->irq); |
15b99ac1 | 311 | return 0; |
1da177e4 | 312 | |
1da177e4 | 313 | failed: |
dd0fab5b | 314 | dev_dbg(&link->dev, "com20020_config failed...\n"); |
1da177e4 | 315 | com20020_release(link); |
15b99ac1 | 316 | return -ENODEV; |
1da177e4 LT |
317 | } /* com20020_config */ |
318 | ||
319 | /*====================================================================== | |
320 | ||
321 | After a card is removed, com20020_release() will unregister the net | |
322 | device, and release the PCMCIA configuration. If the device is | |
323 | still open, this will be postponed until it is closed. | |
324 | ||
325 | ======================================================================*/ | |
326 | ||
fba395ee | 327 | static void com20020_release(struct pcmcia_device *link) |
1da177e4 | 328 | { |
dd0fab5b | 329 | dev_dbg(&link->dev, "com20020_release\n"); |
fba395ee | 330 | pcmcia_disable_device(link); |
1da177e4 LT |
331 | } |
332 | ||
fba395ee | 333 | static int com20020_suspend(struct pcmcia_device *link) |
98e4c28b | 334 | { |
98e4c28b DB |
335 | com20020_dev_t *info = link->priv; |
336 | struct net_device *dev = info->dev; | |
337 | ||
e2d40963 | 338 | if (link->open) |
8661bb5b | 339 | netif_device_detach(dev); |
98e4c28b DB |
340 | |
341 | return 0; | |
342 | } | |
343 | ||
fba395ee | 344 | static int com20020_resume(struct pcmcia_device *link) |
98e4c28b | 345 | { |
98e4c28b DB |
346 | com20020_dev_t *info = link->priv; |
347 | struct net_device *dev = info->dev; | |
348 | ||
e2d40963 | 349 | if (link->open) { |
8661bb5b | 350 | int ioaddr = dev->base_addr; |
4cf1653a | 351 | struct arcnet_local *lp = netdev_priv(dev); |
8661bb5b DB |
352 | ARCRESET; |
353 | } | |
98e4c28b DB |
354 | |
355 | return 0; | |
356 | } | |
357 | ||
7fb22bb4 | 358 | static struct pcmcia_device_id com20020_ids[] = { |
6bb1c39a MS |
359 | PCMCIA_DEVICE_PROD_ID12("Contemporary Control Systems, Inc.", |
360 | "PCM20 Arcnet Adapter", 0x59991666, 0x95dfffaf), | |
361 | PCMCIA_DEVICE_PROD_ID12("SoHard AG", | |
362 | "SH ARC PCMCIA", 0xf8991729, 0x69dff0c7), | |
7fb22bb4 DB |
363 | PCMCIA_DEVICE_NULL |
364 | }; | |
365 | MODULE_DEVICE_TABLE(pcmcia, com20020_ids); | |
1da177e4 LT |
366 | |
367 | static struct pcmcia_driver com20020_cs_driver = { | |
368 | .owner = THIS_MODULE, | |
369 | .drv = { | |
370 | .name = "com20020_cs", | |
371 | }, | |
15b99ac1 | 372 | .probe = com20020_probe, |
cc3b4866 | 373 | .remove = com20020_detach, |
7fb22bb4 | 374 | .id_table = com20020_ids, |
98e4c28b DB |
375 | .suspend = com20020_suspend, |
376 | .resume = com20020_resume, | |
1da177e4 LT |
377 | }; |
378 | ||
379 | static int __init init_com20020_cs(void) | |
380 | { | |
381 | return pcmcia_register_driver(&com20020_cs_driver); | |
382 | } | |
383 | ||
384 | static void __exit exit_com20020_cs(void) | |
385 | { | |
386 | pcmcia_unregister_driver(&com20020_cs_driver); | |
1da177e4 LT |
387 | } |
388 | ||
389 | module_init(init_com20020_cs); | |
390 | module_exit(exit_com20020_cs); |