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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/cistpl.h>
47#include <pcmcia/ds.h>
48
49#include <asm/io.h>
50
51#define VERSION "arcnet: COM20020 PCMCIA support loaded.\n"
52
53
54static void regdump(struct net_device *dev)
55{
56#ifdef DEBUG
57 int ioaddr = dev->base_addr;
58 int count;
59
60 netdev_dbg(dev, "register dump:\n");
61 for (count = ioaddr; count < ioaddr + 16; count++)
62 {
63 if (!(count % 16))
64 pr_cont("%04X:", count);
65 pr_cont(" %02X", inb(count));
66 }
67 pr_cont("\n");
68
69 netdev_dbg(dev, "buffer0 dump:\n");
70 /* set up the address register */
71 count = 0;
72 outb((count >> 8) | RDDATAflag | AUTOINCflag, _ADDR_HI);
73 outb(count & 0xff, _ADDR_LO);
74
75 for (count = 0; count < 256+32; count++)
76 {
77 if (!(count % 16))
78 pr_cont("%04X:", count);
79
80 /* copy the data */
81 pr_cont(" %02X", inb(_MEMDATA));
82 }
83 pr_cont("\n");
84#endif
85}
86
87
88
89/*====================================================================*/
90
91/* Parameters that can be set with 'insmod' */
92
93static int node;
94static int timeout = 3;
95static int backplane;
96static int clockp;
97static int clockm;
98
99module_param(node, int, 0);
100module_param(timeout, int, 0);
101module_param(backplane, int, 0);
102module_param(clockp, int, 0);
103module_param(clockm, int, 0);
104
105MODULE_LICENSE("GPL");
106
107/*====================================================================*/
108
109static int com20020_config(struct pcmcia_device *link);
110static void com20020_release(struct pcmcia_device *link);
111
112static void com20020_detach(struct pcmcia_device *p_dev);
113
114/*====================================================================*/
115
116typedef struct com20020_dev_t {
117 struct net_device *dev;
118} com20020_dev_t;
119
120static int com20020_probe(struct pcmcia_device *p_dev)
121{
122 com20020_dev_t *info;
123 struct net_device *dev;
124 struct arcnet_local *lp;
125
126 dev_dbg(&p_dev->dev, "com20020_attach()\n");
127
128 /* Create new network device */
129 info = kzalloc(sizeof(struct com20020_dev_t), GFP_KERNEL);
130 if (!info)
131 goto fail_alloc_info;
132
133 dev = alloc_arcdev("");
134 if (!dev)
135 goto fail_alloc_dev;
136
137 lp = netdev_priv(dev);
138 lp->timeout = timeout;
139 lp->backplane = backplane;
140 lp->clockp = clockp;
141 lp->clockm = clockm & 3;
142 lp->hw.owner = THIS_MODULE;
143
144 /* fill in our module parameters as defaults */
145 dev->dev_addr[0] = node;
146
147 p_dev->resource[0]->flags |= IO_DATA_PATH_WIDTH_8;
148 p_dev->resource[0]->end = 16;
149 p_dev->config_flags |= CONF_ENABLE_IRQ;
150
151 info->dev = dev;
152 p_dev->priv = info;
153
154 return com20020_config(p_dev);
155
156fail_alloc_dev:
157 kfree(info);
158fail_alloc_info:
159 return -ENOMEM;
160} /* com20020_attach */
161
162static void com20020_detach(struct pcmcia_device *link)
163{
164 struct com20020_dev_t *info = link->priv;
165 struct net_device *dev = info->dev;
166
167 dev_dbg(&link->dev, "detach...\n");
168
169 dev_dbg(&link->dev, "com20020_detach\n");
170
171 dev_dbg(&link->dev, "unregister...\n");
172
173 unregister_netdev(dev);
174
175 /*
176 * this is necessary because we register our IRQ separately
177 * from card services.
178 */
179 if (dev->irq)
180 free_irq(dev->irq, dev);
181
182 com20020_release(link);
183
184 /* Unlink device structure, free bits */
185 dev_dbg(&link->dev, "unlinking...\n");
186 if (link->priv)
187 {
188 dev = info->dev;
189 if (dev)
190 {
191 dev_dbg(&link->dev, "kfree...\n");
192 free_netdev(dev);
193 }
194 dev_dbg(&link->dev, "kfree2...\n");
195 kfree(info);
196 }
197
198} /* com20020_detach */
199
200static int com20020_config(struct pcmcia_device *link)
201{
202 struct arcnet_local *lp;
203 com20020_dev_t *info;
204 struct net_device *dev;
205 int i, ret;
206 int ioaddr;
207
208 info = link->priv;
209 dev = info->dev;
210
211 dev_dbg(&link->dev, "config...\n");
212
213 dev_dbg(&link->dev, "com20020_config\n");
214
215 dev_dbg(&link->dev, "baseport1 is %Xh\n",
216 (unsigned int) link->resource[0]->start);
217
218 i = -ENODEV;
219 link->io_lines = 16;
220
221 if (!link->resource[0]->start)
222 {
223 for (ioaddr = 0x100; ioaddr < 0x400; ioaddr += 0x10)
224 {
225 link->resource[0]->start = ioaddr;
226 i = pcmcia_request_io(link);
227 if (i == 0)
228 break;
229 }
230 }
231 else
232 i = pcmcia_request_io(link);
233
234 if (i != 0)
235 {
236 dev_dbg(&link->dev, "requestIO failed totally!\n");
237 goto failed;
238 }
239
240 ioaddr = dev->base_addr = link->resource[0]->start;
241 dev_dbg(&link->dev, "got ioaddr %Xh\n", ioaddr);
242
243 dev_dbg(&link->dev, "request IRQ %d\n",
244 link->irq);
245 if (!link->irq)
246 {
247 dev_dbg(&link->dev, "requestIRQ failed totally!\n");
248 goto failed;
249 }
250
251 dev->irq = link->irq;
252
253 ret = pcmcia_enable_device(link);
254 if (ret)
255 goto failed;
256
257 if (com20020_check(dev))
258 {
259 regdump(dev);
260 goto failed;
261 }
262
263 lp = netdev_priv(dev);
264 lp->card_name = "PCMCIA COM20020";
265 lp->card_flags = ARC_CAN_10MBIT; /* pretend all of them can 10Mbit */
266
267 SET_NETDEV_DEV(dev, &link->dev);
268
269 i = com20020_found(dev, 0); /* calls register_netdev */
270
271 if (i != 0) {
272 dev_notice(&link->dev,
273 "com20020_found() failed\n");
274 goto failed;
275 }
276
277 netdev_dbg(dev, "port %#3lx, irq %d\n",
278 dev->base_addr, dev->irq);
279 return 0;
280
281failed:
282 dev_dbg(&link->dev, "com20020_config failed...\n");
283 com20020_release(link);
284 return -ENODEV;
285} /* com20020_config */
286
287static void com20020_release(struct pcmcia_device *link)
288{
289 dev_dbg(&link->dev, "com20020_release\n");
290 pcmcia_disable_device(link);
291}
292
293static int com20020_suspend(struct pcmcia_device *link)
294{
295 com20020_dev_t *info = link->priv;
296 struct net_device *dev = info->dev;
297
298 if (link->open)
299 netif_device_detach(dev);
300
301 return 0;
302}
303
304static int com20020_resume(struct pcmcia_device *link)
305{
306 com20020_dev_t *info = link->priv;
307 struct net_device *dev = info->dev;
308
309 if (link->open) {
310 int ioaddr = dev->base_addr;
311 struct arcnet_local *lp = netdev_priv(dev);
312 ARCRESET;
313 }
314
315 return 0;
316}
317
318static const struct pcmcia_device_id com20020_ids[] = {
319 PCMCIA_DEVICE_PROD_ID12("Contemporary Control Systems, Inc.",
320 "PCM20 Arcnet Adapter", 0x59991666, 0x95dfffaf),
321 PCMCIA_DEVICE_PROD_ID12("SoHard AG",
322 "SH ARC PCMCIA", 0xf8991729, 0x69dff0c7),
323 PCMCIA_DEVICE_NULL
324};
325MODULE_DEVICE_TABLE(pcmcia, com20020_ids);
326
327static struct pcmcia_driver com20020_cs_driver = {
328 .owner = THIS_MODULE,
329 .name = "com20020_cs",
330 .probe = com20020_probe,
331 .remove = com20020_detach,
332 .id_table = com20020_ids,
333 .suspend = com20020_suspend,
334 .resume = com20020_resume,
335};
336
337static int __init init_com20020_cs(void)
338{
339 return pcmcia_register_driver(&com20020_cs_driver);
340}
341
342static void __exit exit_com20020_cs(void)
343{
344 pcmcia_unregister_driver(&com20020_cs_driver);
345}
346
347module_init(init_com20020_cs);
348module_exit(exit_com20020_cs);