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
115static int com20020_probe(struct pcmcia_device *p_dev)
116{
117    struct com20020_dev *info;
118    struct net_device *dev;
119    struct arcnet_local *lp;
120
121    dev_dbg(&p_dev->dev, "com20020_attach()\n");
122
123    /* Create new network device */
124    info = kzalloc(sizeof(*info), GFP_KERNEL);
125    if (!info)
126	goto fail_alloc_info;
127
128    dev = alloc_arcdev("");
129    if (!dev)
130	goto fail_alloc_dev;
131
132    lp = netdev_priv(dev);
133    lp->timeout = timeout;
134    lp->backplane = backplane;
135    lp->clockp = clockp;
136    lp->clockm = clockm & 3;
137    lp->hw.owner = THIS_MODULE;
138
139    /* fill in our module parameters as defaults */
140    dev->dev_addr[0] = node;
141
142    p_dev->resource[0]->flags |= IO_DATA_PATH_WIDTH_8;
143    p_dev->resource[0]->end = 16;
144    p_dev->config_flags |= CONF_ENABLE_IRQ;
145
146    info->dev = dev;
147    p_dev->priv = info;
148
149    return com20020_config(p_dev);
150
151fail_alloc_dev:
152    kfree(info);
153fail_alloc_info:
154    return -ENOMEM;
155} /* com20020_attach */
156
157static void com20020_detach(struct pcmcia_device *link)
158{
159    struct com20020_dev *info = link->priv;
160    struct net_device *dev = info->dev;
161
162    dev_dbg(&link->dev, "detach...\n");
163
164    dev_dbg(&link->dev, "com20020_detach\n");
165
166    dev_dbg(&link->dev, "unregister...\n");
167
168    unregister_netdev(dev);
169
170    /*
171     * this is necessary because we register our IRQ separately
172     * from card services.
173     */
174    if (dev->irq)
175	    free_irq(dev->irq, dev);
176
177    com20020_release(link);
178
179    /* Unlink device structure, free bits */
180    dev_dbg(&link->dev, "unlinking...\n");
181    if (link->priv)
182    {
183	dev = info->dev;
184	if (dev)
185	{
186	    dev_dbg(&link->dev, "kfree...\n");
187	    free_netdev(dev);
188	}
189	dev_dbg(&link->dev, "kfree2...\n");
190	kfree(info);
191    }
192
193} /* com20020_detach */
194
195static int com20020_config(struct pcmcia_device *link)
196{
197    struct arcnet_local *lp;
198    struct com20020_dev *info;
199    struct net_device *dev;
200    int i, ret;
201    int ioaddr;
202
203    info = link->priv;
204    dev = info->dev;
205
206    dev_dbg(&link->dev, "config...\n");
207
208    dev_dbg(&link->dev, "com20020_config\n");
209
210    dev_dbg(&link->dev, "baseport1 is %Xh\n",
211	    (unsigned int) link->resource[0]->start);
212
213    i = -ENODEV;
214    link->io_lines = 16;
215
216    if (!link->resource[0]->start)
217    {
218	for (ioaddr = 0x100; ioaddr < 0x400; ioaddr += 0x10)
219	{
220	    link->resource[0]->start = ioaddr;
221	    i = pcmcia_request_io(link);
222	    if (i == 0)
223		break;
224	}
225    }
226    else
227	i = pcmcia_request_io(link);
228
229    if (i != 0)
230    {
231	dev_dbg(&link->dev, "requestIO failed totally!\n");
232	goto failed;
233    }
234
235    ioaddr = dev->base_addr = link->resource[0]->start;
236    dev_dbg(&link->dev, "got ioaddr %Xh\n", ioaddr);
237
238    dev_dbg(&link->dev, "request IRQ %d\n",
239	    link->irq);
240    if (!link->irq)
241    {
242	dev_dbg(&link->dev, "requestIRQ failed totally!\n");
243	goto failed;
244    }
245
246    dev->irq = link->irq;
247
248    ret = pcmcia_enable_device(link);
249    if (ret)
250	    goto failed;
251
252    if (com20020_check(dev))
253    {
254	regdump(dev);
255	goto failed;
256    }
257
258    lp = netdev_priv(dev);
259    lp->card_name = "PCMCIA COM20020";
260    lp->card_flags = ARC_CAN_10MBIT; /* pretend all of them can 10Mbit */
261
262    SET_NETDEV_DEV(dev, &link->dev);
263
264    i = com20020_found(dev, 0);	/* calls register_netdev */
265
266    if (i != 0) {
267	dev_notice(&link->dev,
268		   "com20020_found() failed\n");
269	goto failed;
270    }
271
272    netdev_dbg(dev, "port %#3lx, irq %d\n",
273	       dev->base_addr, dev->irq);
274    return 0;
275
276failed:
277    dev_dbg(&link->dev, "com20020_config failed...\n");
278    com20020_release(link);
279    return -ENODEV;
280} /* com20020_config */
281
282static void com20020_release(struct pcmcia_device *link)
283{
284	dev_dbg(&link->dev, "com20020_release\n");
285	pcmcia_disable_device(link);
286}
287
288static int com20020_suspend(struct pcmcia_device *link)
289{
290	struct com20020_dev *info = link->priv;
291	struct net_device *dev = info->dev;
292
293	if (link->open)
294		netif_device_detach(dev);
295
296	return 0;
297}
298
299static int com20020_resume(struct pcmcia_device *link)
300{
301	struct com20020_dev *info = link->priv;
302	struct net_device *dev = info->dev;
303
304	if (link->open) {
305		int ioaddr = dev->base_addr;
306		struct arcnet_local *lp = netdev_priv(dev);
307		ARCRESET;
308	}
309
310	return 0;
311}
312
313static const struct pcmcia_device_id com20020_ids[] = {
314	PCMCIA_DEVICE_PROD_ID12("Contemporary Control Systems, Inc.",
315			"PCM20 Arcnet Adapter", 0x59991666, 0x95dfffaf),
316	PCMCIA_DEVICE_PROD_ID12("SoHard AG",
317			"SH ARC PCMCIA", 0xf8991729, 0x69dff0c7),
318	PCMCIA_DEVICE_NULL
319};
320MODULE_DEVICE_TABLE(pcmcia, com20020_ids);
321
322static struct pcmcia_driver com20020_cs_driver = {
323	.owner		= THIS_MODULE,
324	.name		= "com20020_cs",
325	.probe		= com20020_probe,
326	.remove		= com20020_detach,
327	.id_table	= com20020_ids,
328	.suspend	= com20020_suspend,
329	.resume		= com20020_resume,
330};
331module_pcmcia_driver(com20020_cs_driver);
332