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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/ptrace.h>
36#include <linux/slab.h>
37#include <linux/string.h>
38#include <linux/timer.h>
39#include <linux/delay.h>
40#include <linux/module.h>
41#include <linux/netdevice.h>
42#include <linux/arcdevice.h>
43#include <linux/com20020.h>
44
45#include <pcmcia/cistpl.h>
46#include <pcmcia/ds.h>
47
48#include <asm/io.h>
49
50#define VERSION "arcnet: COM20020 PCMCIA support loaded.\n"
51
52
53static void regdump(struct net_device *dev)
54{
55#ifdef DEBUG
56 int ioaddr = dev->base_addr;
57 int count;
58
59 netdev_dbg(dev, "register dump:\n");
60 for (count = ioaddr; count < ioaddr + 16; count++)
61 {
62 if (!(count % 16))
63 pr_cont("%04X:", count);
64 pr_cont(" %02X", inb(count));
65 }
66 pr_cont("\n");
67
68 netdev_dbg(dev, "buffer0 dump:\n");
69 /* set up the address register */
70 count = 0;
71 outb((count >> 8) | RDDATAflag | AUTOINCflag, _ADDR_HI);
72 outb(count & 0xff, _ADDR_LO);
73
74 for (count = 0; count < 256+32; count++)
75 {
76 if (!(count % 16))
77 pr_cont("%04X:", count);
78
79 /* copy the data */
80 pr_cont(" %02X", inb(_MEMDATA));
81 }
82 pr_cont("\n");
83#endif
84}
85
86
87
88/*====================================================================*/
89
90/* Parameters that can be set with 'insmod' */
91
92static int node;
93static int timeout = 3;
94static int backplane;
95static int clockp;
96static int clockm;
97
98module_param(node, int, 0);
99module_param(timeout, int, 0);
100module_param(backplane, int, 0);
101module_param(clockp, int, 0);
102module_param(clockm, int, 0);
103
104MODULE_LICENSE("GPL");
105
106/*====================================================================*/
107
108static int com20020_config(struct pcmcia_device *link);
109static void com20020_release(struct pcmcia_device *link);
110
111static void com20020_detach(struct pcmcia_device *p_dev);
112
113/*====================================================================*/
114
115typedef struct com20020_dev_t {
116 struct net_device *dev;
117} com20020_dev_t;
118
119static int com20020_probe(struct pcmcia_device *p_dev)
120{
121 com20020_dev_t *info;
122 struct net_device *dev;
123 struct arcnet_local *lp;
124
125 dev_dbg(&p_dev->dev, "com20020_attach()\n");
126
127 /* Create new network device */
128 info = kzalloc(sizeof(struct com20020_dev_t), GFP_KERNEL);
129 if (!info)
130 goto fail_alloc_info;
131
132 dev = alloc_arcdev("");
133 if (!dev)
134 goto fail_alloc_dev;
135
136 lp = netdev_priv(dev);
137 lp->timeout = timeout;
138 lp->backplane = backplane;
139 lp->clockp = clockp;
140 lp->clockm = clockm & 3;
141 lp->hw.owner = THIS_MODULE;
142
143 /* fill in our module parameters as defaults */
144 dev->dev_addr[0] = node;
145
146 p_dev->resource[0]->flags |= IO_DATA_PATH_WIDTH_8;
147 p_dev->resource[0]->end = 16;
148 p_dev->config_flags |= CONF_ENABLE_IRQ;
149
150 info->dev = dev;
151 p_dev->priv = info;
152
153 return com20020_config(p_dev);
154
155fail_alloc_dev:
156 kfree(info);
157fail_alloc_info:
158 return -ENOMEM;
159} /* com20020_attach */
160
161static void com20020_detach(struct pcmcia_device *link)
162{
163 struct com20020_dev_t *info = link->priv;
164 struct net_device *dev = info->dev;
165
166 dev_dbg(&link->dev, "detach...\n");
167
168 dev_dbg(&link->dev, "com20020_detach\n");
169
170 dev_dbg(&link->dev, "unregister...\n");
171
172 unregister_netdev(dev);
173
174 /*
175 * this is necessary because we register our IRQ separately
176 * from card services.
177 */
178 if (dev->irq)
179 free_irq(dev->irq, dev);
180
181 com20020_release(link);
182
183 /* Unlink device structure, free bits */
184 dev_dbg(&link->dev, "unlinking...\n");
185 if (link->priv)
186 {
187 dev = info->dev;
188 if (dev)
189 {
190 dev_dbg(&link->dev, "kfree...\n");
191 free_netdev(dev);
192 }
193 dev_dbg(&link->dev, "kfree2...\n");
194 kfree(info);
195 }
196
197} /* com20020_detach */
198
199static int com20020_config(struct pcmcia_device *link)
200{
201 struct arcnet_local *lp;
202 com20020_dev_t *info;
203 struct net_device *dev;
204 int i, ret;
205 int ioaddr;
206
207 info = link->priv;
208 dev = info->dev;
209
210 dev_dbg(&link->dev, "config...\n");
211
212 dev_dbg(&link->dev, "com20020_config\n");
213
214 dev_dbg(&link->dev, "baseport1 is %Xh\n",
215 (unsigned int) link->resource[0]->start);
216
217 i = -ENODEV;
218 link->io_lines = 16;
219
220 if (!link->resource[0]->start)
221 {
222 for (ioaddr = 0x100; ioaddr < 0x400; ioaddr += 0x10)
223 {
224 link->resource[0]->start = ioaddr;
225 i = pcmcia_request_io(link);
226 if (i == 0)
227 break;
228 }
229 }
230 else
231 i = pcmcia_request_io(link);
232
233 if (i != 0)
234 {
235 dev_dbg(&link->dev, "requestIO failed totally!\n");
236 goto failed;
237 }
238
239 ioaddr = dev->base_addr = link->resource[0]->start;
240 dev_dbg(&link->dev, "got ioaddr %Xh\n", ioaddr);
241
242 dev_dbg(&link->dev, "request IRQ %d\n",
243 link->irq);
244 if (!link->irq)
245 {
246 dev_dbg(&link->dev, "requestIRQ failed totally!\n");
247 goto failed;
248 }
249
250 dev->irq = link->irq;
251
252 ret = pcmcia_enable_device(link);
253 if (ret)
254 goto failed;
255
256 if (com20020_check(dev))
257 {
258 regdump(dev);
259 goto failed;
260 }
261
262 lp = netdev_priv(dev);
263 lp->card_name = "PCMCIA COM20020";
264 lp->card_flags = ARC_CAN_10MBIT; /* pretend all of them can 10Mbit */
265
266 SET_NETDEV_DEV(dev, &link->dev);
267
268 i = com20020_found(dev, 0); /* calls register_netdev */
269
270 if (i != 0) {
271 dev_notice(&link->dev,
272 "com20020_found() failed\n");
273 goto failed;
274 }
275
276 netdev_dbg(dev, "port %#3lx, irq %d\n",
277 dev->base_addr, dev->irq);
278 return 0;
279
280failed:
281 dev_dbg(&link->dev, "com20020_config failed...\n");
282 com20020_release(link);
283 return -ENODEV;
284} /* com20020_config */
285
286static void com20020_release(struct pcmcia_device *link)
287{
288 dev_dbg(&link->dev, "com20020_release\n");
289 pcmcia_disable_device(link);
290}
291
292static int com20020_suspend(struct pcmcia_device *link)
293{
294 com20020_dev_t *info = link->priv;
295 struct net_device *dev = info->dev;
296
297 if (link->open)
298 netif_device_detach(dev);
299
300 return 0;
301}
302
303static int com20020_resume(struct pcmcia_device *link)
304{
305 com20020_dev_t *info = link->priv;
306 struct net_device *dev = info->dev;
307
308 if (link->open) {
309 int ioaddr = dev->base_addr;
310 struct arcnet_local *lp = netdev_priv(dev);
311 ARCRESET;
312 }
313
314 return 0;
315}
316
317static const struct pcmcia_device_id com20020_ids[] = {
318 PCMCIA_DEVICE_PROD_ID12("Contemporary Control Systems, Inc.",
319 "PCM20 Arcnet Adapter", 0x59991666, 0x95dfffaf),
320 PCMCIA_DEVICE_PROD_ID12("SoHard AG",
321 "SH ARC PCMCIA", 0xf8991729, 0x69dff0c7),
322 PCMCIA_DEVICE_NULL
323};
324MODULE_DEVICE_TABLE(pcmcia, com20020_ids);
325
326static struct pcmcia_driver com20020_cs_driver = {
327 .owner = THIS_MODULE,
328 .name = "com20020_cs",
329 .probe = com20020_probe,
330 .remove = com20020_detach,
331 .id_table = com20020_ids,
332 .suspend = com20020_suspend,
333 .resume = com20020_resume,
334};
335module_pcmcia_driver(com20020_cs_driver);