Merge branch 'fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/djbw/async_tx
[deliverable/linux.git] / drivers / net / pcmcia / com20020_cs.c
CommitLineData
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
58static int pc_debug = PCMCIA_DEBUG;
59module_param(pc_debug, int, 0);
60#define DEBUG(n, args...) if (pc_debug>(n)) printk(KERN_DEBUG args)
61
62static 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)
96static inline void regdump(struct net_device *dev) { }
97
98#endif
99
100
101/*====================================================================*/
102
103/* Parameters that can be set with 'insmod' */
104
105static int node;
106static int timeout = 3;
107static int backplane;
108static int clockp;
109static int clockm;
110
111module_param(node, int, 0);
112module_param(timeout, int, 0);
113module_param(backplane, int, 0);
114module_param(clockp, int, 0);
115module_param(clockm, int, 0);
116
117MODULE_LICENSE("GPL");
118
119/*====================================================================*/
120
15b99ac1 121static int com20020_config(struct pcmcia_device *link);
fba395ee 122static void com20020_release(struct pcmcia_device *link);
1da177e4 123
cc3b4866 124static void com20020_detach(struct pcmcia_device *p_dev);
1da177e4 125
1da177e4
LT
126/*====================================================================*/
127
128typedef 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
15b99ac1 141static int com20020_probe(struct pcmcia_device *p_dev)
1da177e4 142{
1da177e4
LT
143 com20020_dev_t *info;
144 struct net_device *dev;
1da177e4 145 struct arcnet_local *lp;
f8cfa618 146
1da177e4
LT
147 DEBUG(0, "com20020_attach()\n");
148
149 /* Create new network device */
dd00cc48 150 info = kzalloc(sizeof(struct com20020_dev_t), GFP_KERNEL);
1da177e4
LT
151 if (!info)
152 goto fail_alloc_info;
153
154 dev = alloc_arcdev("");
155 if (!dev)
156 goto fail_alloc_dev;
157
1da177e4
LT
158 lp = dev->priv;
159 lp->timeout = timeout;
160 lp->backplane = backplane;
161 lp->clockp = clockp;
162 lp->clockm = clockm & 3;
163 lp->hw.owner = THIS_MODULE;
164
165 /* fill in our module parameters as defaults */
166 dev->dev_addr[0] = node;
167
fd238232
DB
168 p_dev->io.Attributes1 = IO_DATA_PATH_WIDTH_8;
169 p_dev->io.NumPorts1 = 16;
170 p_dev->io.IOAddrLines = 16;
171 p_dev->irq.Attributes = IRQ_TYPE_EXCLUSIVE;
172 p_dev->irq.IRQInfo1 = IRQ_LEVEL_ID;
173 p_dev->conf.Attributes = CONF_ENABLE_IRQ;
174 p_dev->conf.IntType = INT_MEMORY_AND_IO;
1da177e4 175
fd238232
DB
176 p_dev->irq.Instance = info->dev = dev;
177 p_dev->priv = info;
1da177e4 178
15b99ac1 179 return com20020_config(p_dev);
1da177e4
LT
180
181fail_alloc_dev:
182 kfree(info);
183fail_alloc_info:
f8cfa618 184 return -ENOMEM;
1da177e4
LT
185} /* com20020_attach */
186
187/*======================================================================
188
189 This deletes a driver "instance". The device is de-registered
190 with Card Services. If it has been released, all local data
191 structures are freed. Otherwise, the structures will be freed
192 when the device is released.
193
194======================================================================*/
195
fba395ee 196static void com20020_detach(struct pcmcia_device *link)
1da177e4
LT
197{
198 struct com20020_dev_t *info = link->priv;
b4635811
DB
199 struct net_device *dev = info->dev;
200
1da177e4
LT
201 DEBUG(1,"detach...\n");
202
203 DEBUG(0, "com20020_detach(0x%p)\n", link);
204
fd238232 205 if (link->dev_node) {
1da177e4
LT
206 DEBUG(1,"unregister...\n");
207
208 unregister_netdev(dev);
b4635811 209
1da177e4
LT
210 /*
211 * this is necessary because we register our IRQ separately
212 * from card services.
213 */
214 if (dev->irq)
215 free_irq(dev->irq, dev);
216 }
217
e2d40963 218 com20020_release(link);
1da177e4 219
1da177e4
LT
220 /* Unlink device structure, free bits */
221 DEBUG(1,"unlinking...\n");
1da177e4
LT
222 if (link->priv)
223 {
224 dev = info->dev;
225 if (dev)
226 {
227 DEBUG(1,"kfree...\n");
228 free_netdev(dev);
229 }
230 DEBUG(1,"kfree2...\n");
231 kfree(info);
232 }
1da177e4
LT
233
234} /* com20020_detach */
235
236/*======================================================================
237
238 com20020_config() is scheduled to run after a CARD_INSERTION event
239 is received, to configure the PCMCIA socket, and to make the
240 device available to the system.
241
242======================================================================*/
243
244#define CS_CHECK(fn, ret) \
245do { last_fn = (fn); if ((last_ret = (ret)) != 0) goto cs_failed; } while (0)
246
15b99ac1 247static int com20020_config(struct pcmcia_device *link)
1da177e4
LT
248{
249 struct arcnet_local *lp;
1da177e4
LT
250 com20020_dev_t *info;
251 struct net_device *dev;
252 int i, last_ret, last_fn;
1da177e4
LT
253 int ioaddr;
254
1da177e4
LT
255 info = link->priv;
256 dev = info->dev;
257
258 DEBUG(1,"config...\n");
259
260 DEBUG(0, "com20020_config(0x%p)\n", link);
261
1da177e4 262 DEBUG(1,"arcnet: baseport1 is %Xh\n", link->io.BasePort1);
4c89e88b 263 i = -ENODEV;
1da177e4
LT
264 if (!link->io.BasePort1)
265 {
266 for (ioaddr = 0x100; ioaddr < 0x400; ioaddr += 0x10)
267 {
268 link->io.BasePort1 = ioaddr;
fba395ee 269 i = pcmcia_request_io(link, &link->io);
4c89e88b 270 if (i == 0)
1da177e4
LT
271 break;
272 }
273 }
274 else
fba395ee 275 i = pcmcia_request_io(link, &link->io);
1da177e4 276
4c89e88b 277 if (i != 0)
1da177e4
LT
278 {
279 DEBUG(1,"arcnet: requestIO failed totally!\n");
280 goto failed;
281 }
282
283 ioaddr = dev->base_addr = link->io.BasePort1;
284 DEBUG(1,"arcnet: got ioaddr %Xh\n", ioaddr);
285
286 DEBUG(1,"arcnet: request IRQ %d (%Xh/%Xh)\n",
287 link->irq.AssignedIRQ,
288 link->irq.IRQInfo1, link->irq.IRQInfo2);
fba395ee 289 i = pcmcia_request_irq(link, &link->irq);
4c89e88b 290 if (i != 0)
1da177e4
LT
291 {
292 DEBUG(1,"arcnet: requestIRQ failed totally!\n");
293 goto failed;
294 }
295
296 dev->irq = link->irq.AssignedIRQ;
297
fba395ee 298 CS_CHECK(RequestConfiguration, pcmcia_request_configuration(link, &link->conf));
1da177e4
LT
299
300 if (com20020_check(dev))
301 {
302 regdump(dev);
303 goto failed;
304 }
305
306 lp = dev->priv;
307 lp->card_name = "PCMCIA COM20020";
308 lp->card_flags = ARC_CAN_10MBIT; /* pretend all of them can 10Mbit */
309
fd238232 310 link->dev_node = &info->node;
fba395ee 311 SET_NETDEV_DEV(dev, &handle_to_dev(link));
1da177e4
LT
312
313 i = com20020_found(dev, 0); /* calls register_netdev */
314
315 if (i != 0) {
316 DEBUG(1,KERN_NOTICE "com20020_cs: com20020_found() failed\n");
fd238232 317 link->dev_node = NULL;
1da177e4
LT
318 goto failed;
319 }
320
321 strcpy(info->node.dev_name, dev->name);
322
323 DEBUG(1,KERN_INFO "%s: port %#3lx, irq %d\n",
324 dev->name, dev->base_addr, dev->irq);
15b99ac1 325 return 0;
1da177e4
LT
326
327cs_failed:
fba395ee 328 cs_error(link, last_fn, last_ret);
1da177e4
LT
329failed:
330 DEBUG(1,"com20020_config failed...\n");
331 com20020_release(link);
15b99ac1 332 return -ENODEV;
1da177e4
LT
333} /* com20020_config */
334
335/*======================================================================
336
337 After a card is removed, com20020_release() will unregister the net
338 device, and release the PCMCIA configuration. If the device is
339 still open, this will be postponed until it is closed.
340
341======================================================================*/
342
fba395ee 343static void com20020_release(struct pcmcia_device *link)
1da177e4 344{
5f2a71fc 345 DEBUG(0, "com20020_release(0x%p)\n", link);
fba395ee 346 pcmcia_disable_device(link);
1da177e4
LT
347}
348
fba395ee 349static int com20020_suspend(struct pcmcia_device *link)
98e4c28b 350{
98e4c28b
DB
351 com20020_dev_t *info = link->priv;
352 struct net_device *dev = info->dev;
353
e2d40963 354 if (link->open)
8661bb5b 355 netif_device_detach(dev);
98e4c28b
DB
356
357 return 0;
358}
359
fba395ee 360static int com20020_resume(struct pcmcia_device *link)
98e4c28b 361{
98e4c28b
DB
362 com20020_dev_t *info = link->priv;
363 struct net_device *dev = info->dev;
364
e2d40963 365 if (link->open) {
8661bb5b
DB
366 int ioaddr = dev->base_addr;
367 struct arcnet_local *lp = dev->priv;
368 ARCRESET;
369 }
98e4c28b
DB
370
371 return 0;
372}
373
7fb22bb4 374static struct pcmcia_device_id com20020_ids[] = {
6bb1c39a
MS
375 PCMCIA_DEVICE_PROD_ID12("Contemporary Control Systems, Inc.",
376 "PCM20 Arcnet Adapter", 0x59991666, 0x95dfffaf),
377 PCMCIA_DEVICE_PROD_ID12("SoHard AG",
378 "SH ARC PCMCIA", 0xf8991729, 0x69dff0c7),
7fb22bb4
DB
379 PCMCIA_DEVICE_NULL
380};
381MODULE_DEVICE_TABLE(pcmcia, com20020_ids);
1da177e4
LT
382
383static struct pcmcia_driver com20020_cs_driver = {
384 .owner = THIS_MODULE,
385 .drv = {
386 .name = "com20020_cs",
387 },
15b99ac1 388 .probe = com20020_probe,
cc3b4866 389 .remove = com20020_detach,
7fb22bb4 390 .id_table = com20020_ids,
98e4c28b
DB
391 .suspend = com20020_suspend,
392 .resume = com20020_resume,
1da177e4
LT
393};
394
395static int __init init_com20020_cs(void)
396{
397 return pcmcia_register_driver(&com20020_cs_driver);
398}
399
400static void __exit exit_com20020_cs(void)
401{
402 pcmcia_unregister_driver(&com20020_cs_driver);
1da177e4
LT
403}
404
405module_init(init_com20020_cs);
406module_exit(exit_com20020_cs);
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