1/*** -*- linux-c -*- **********************************************************
2
3     Driver for Atmel at76c502 at76c504 and at76c506 wireless cards.
4
5        Copyright 2000-2001 ATMEL Corporation.
6        Copyright 2003 Simon Kelley.
7
8    This code was developed from version 2.1.1 of the Atmel drivers,
9    released by Atmel corp. under the GPL in December 2002. It also
10    includes code from the Linux aironet drivers (C) Benjamin Reed,
11    and the Linux PCMCIA package, (C) David Hinds.
12
13    For all queries about this code, please contact the current author,
14    Simon Kelley <simon@thekelleys.org.uk> and not Atmel Corporation.
15
16    This program is free software; you can redistribute it and/or modify
17    it under the terms of the GNU General Public License as published by
18    the Free Software Foundation; either version 2 of the License, or
19    (at your option) any later version.
20
21    This software is distributed in the hope that it will be useful,
22    but WITHOUT ANY WARRANTY; without even the implied warranty of
23    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
24    GNU General Public License for more details.
25
26    You should have received a copy of the GNU General Public License
27    along with Atmel wireless lan drivers; if not, see
28    <http://www.gnu.org/licenses/>.
29
30******************************************************************************/
31
32#ifdef __IN_PCMCIA_PACKAGE__
33#include <pcmcia/k_compat.h>
34#endif
35#include <linux/kernel.h>
36#include <linux/module.h>
37#include <linux/ptrace.h>
38#include <linux/slab.h>
39#include <linux/string.h>
40#include <linux/netdevice.h>
41#include <linux/moduleparam.h>
42#include <linux/device.h>
43
44#include <pcmcia/cistpl.h>
45#include <pcmcia/cisreg.h>
46#include <pcmcia/ds.h>
47#include <pcmcia/ciscode.h>
48
49#include <asm/io.h>
50#include <linux/wireless.h>
51
52#include "atmel.h"
53
54
55/*====================================================================*/
56
57MODULE_AUTHOR("Simon Kelley");
58MODULE_DESCRIPTION("Support for Atmel at76c50x 802.11 wireless ethernet cards.");
59MODULE_LICENSE("GPL");
60MODULE_SUPPORTED_DEVICE("Atmel at76c50x PCMCIA cards");
61
62/*====================================================================*/
63
64static int atmel_config(struct pcmcia_device *link);
65static void atmel_release(struct pcmcia_device *link);
66
67static void atmel_detach(struct pcmcia_device *p_dev);
68
69struct local_info {
70	struct net_device *eth_dev;
71};
72
73static int atmel_probe(struct pcmcia_device *p_dev)
74{
75	struct local_info *local;
76	int ret;
77
78	dev_dbg(&p_dev->dev, "atmel_attach()\n");
79
80	/* Allocate space for private device-specific data */
81	local = kzalloc(sizeof(*local), GFP_KERNEL);
82	if (!local)
83		return -ENOMEM;
84
85	p_dev->priv = local;
86
87	ret = atmel_config(p_dev);
88	if (ret)
89		goto err_free_priv;
90
91	return 0;
92
93err_free_priv:
94	kfree(p_dev->priv);
95	return ret;
96}
97
98static void atmel_detach(struct pcmcia_device *link)
99{
100	dev_dbg(&link->dev, "atmel_detach\n");
101
102	atmel_release(link);
103
104	kfree(link->priv);
105}
106
107/* Call-back function to interrogate PCMCIA-specific information
108   about the current existence of the card */
109static int card_present(void *arg)
110{
111	struct pcmcia_device *link = (struct pcmcia_device *)arg;
112
113	if (pcmcia_dev_present(link))
114		return 1;
115
116	return 0;
117}
118
119static int atmel_config_check(struct pcmcia_device *p_dev, void *priv_data)
120{
121	if (p_dev->config_index == 0)
122		return -EINVAL;
123
124	return pcmcia_request_io(p_dev);
125}
126
127static int atmel_config(struct pcmcia_device *link)
128{
129	int ret;
130	const struct pcmcia_device_id *did;
131
132	did = dev_get_drvdata(&link->dev);
133
134	dev_dbg(&link->dev, "atmel_config\n");
135
136	link->config_flags |= CONF_ENABLE_IRQ | CONF_AUTO_SET_VPP |
137		CONF_AUTO_AUDIO | CONF_AUTO_SET_IO;
138
139	if (pcmcia_loop_config(link, atmel_config_check, NULL))
140		goto failed;
141
142	if (!link->irq) {
143		dev_err(&link->dev, "atmel: cannot assign IRQ: check that CONFIG_ISA is set in kernel config.");
144		goto failed;
145	}
146
147	ret = pcmcia_enable_device(link);
148	if (ret)
149		goto failed;
150
151	((struct local_info *)link->priv)->eth_dev =
152		init_atmel_card(link->irq,
153				link->resource[0]->start,
154				did ? did->driver_info : ATMEL_FW_TYPE_NONE,
155				&link->dev,
156				card_present,
157				link);
158	if (!((struct local_info *)link->priv)->eth_dev)
159			goto failed;
160
161
162	return 0;
163
164 failed:
165	atmel_release(link);
166	return -ENODEV;
167}
168
169static void atmel_release(struct pcmcia_device *link)
170{
171	struct net_device *dev = ((struct local_info *)link->priv)->eth_dev;
172
173	dev_dbg(&link->dev, "atmel_release\n");
174
175	if (dev)
176		stop_atmel_card(dev);
177	((struct local_info *)link->priv)->eth_dev = NULL;
178
179	pcmcia_disable_device(link);
180}
181
182static int atmel_suspend(struct pcmcia_device *link)
183{
184	struct local_info *local = link->priv;
185
186	netif_device_detach(local->eth_dev);
187
188	return 0;
189}
190
191static int atmel_resume(struct pcmcia_device *link)
192{
193	struct local_info *local = link->priv;
194
195	atmel_open(local->eth_dev);
196	netif_device_attach(local->eth_dev);
197
198	return 0;
199}
200
201/*====================================================================*/
202/* We use the driver_info field to store the correct firmware type for a card. */
203
204#define PCMCIA_DEVICE_MANF_CARD_INFO(manf, card, info) { \
205	.match_flags = PCMCIA_DEV_ID_MATCH_MANF_ID| \
206			PCMCIA_DEV_ID_MATCH_CARD_ID, \
207	.manf_id = (manf), \
208	.card_id = (card), \
209        .driver_info = (kernel_ulong_t)(info), }
210
211#define PCMCIA_DEVICE_PROD_ID12_INFO(v1, v2, vh1, vh2, info) { \
212	.match_flags = PCMCIA_DEV_ID_MATCH_PROD_ID1| \
213			PCMCIA_DEV_ID_MATCH_PROD_ID2, \
214	.prod_id = { (v1), (v2), NULL, NULL }, \
215	.prod_id_hash = { (vh1), (vh2), 0, 0 }, \
216        .driver_info = (kernel_ulong_t)(info), }
217
218static const struct pcmcia_device_id atmel_ids[] = {
219	PCMCIA_DEVICE_MANF_CARD_INFO(0x0101, 0x0620, ATMEL_FW_TYPE_502_3COM),
220	PCMCIA_DEVICE_MANF_CARD_INFO(0x0101, 0x0696, ATMEL_FW_TYPE_502_3COM),
221	PCMCIA_DEVICE_MANF_CARD_INFO(0x01bf, 0x3302, ATMEL_FW_TYPE_502E),
222	PCMCIA_DEVICE_MANF_CARD_INFO(0xd601, 0x0007, ATMEL_FW_TYPE_502),
223	PCMCIA_DEVICE_PROD_ID12_INFO("11WAVE", "11WP611AL-E", 0x9eb2da1f, 0xc9a0d3f9, ATMEL_FW_TYPE_502E),
224	PCMCIA_DEVICE_PROD_ID12_INFO("ATMEL", "AT76C502AR", 0xabda4164, 0x41b37e1f, ATMEL_FW_TYPE_502),
225	PCMCIA_DEVICE_PROD_ID12_INFO("ATMEL", "AT76C502AR_D", 0xabda4164, 0x3675d704, ATMEL_FW_TYPE_502D),
226	PCMCIA_DEVICE_PROD_ID12_INFO("ATMEL", "AT76C502AR_E", 0xabda4164, 0x4172e792, ATMEL_FW_TYPE_502E),
227	PCMCIA_DEVICE_PROD_ID12_INFO("ATMEL", "AT76C504_R", 0xabda4164, 0x917f3d72, ATMEL_FW_TYPE_504_2958),
228	PCMCIA_DEVICE_PROD_ID12_INFO("ATMEL", "AT76C504", 0xabda4164, 0x5040670a, ATMEL_FW_TYPE_504),
229	PCMCIA_DEVICE_PROD_ID12_INFO("ATMEL", "AT76C504A", 0xabda4164, 0xe15ed87f, ATMEL_FW_TYPE_504A_2958),
230	PCMCIA_DEVICE_PROD_ID12_INFO("BT", "Voyager 1020 Laptop Adapter", 0xae49b86a, 0x1e957cd5, ATMEL_FW_TYPE_502),
231	PCMCIA_DEVICE_PROD_ID12_INFO("CNet", "CNWLC 11Mbps Wireless PC Card V-5", 0xbc477dde, 0x502fae6b, ATMEL_FW_TYPE_502E),
232	PCMCIA_DEVICE_PROD_ID12_INFO("IEEE 802.11b", "Wireless LAN PC Card", 0x5b878724, 0x122f1df6, ATMEL_FW_TYPE_502),
233	PCMCIA_DEVICE_PROD_ID12_INFO("IEEE 802.11b", "Wireless LAN Card S", 0x5b878724, 0x5fba533a, ATMEL_FW_TYPE_504_2958),
234	PCMCIA_DEVICE_PROD_ID12_INFO("OEM", "11Mbps Wireless LAN PC Card V-3", 0xfea54c90, 0x1c5b0f68, ATMEL_FW_TYPE_502),
235	PCMCIA_DEVICE_PROD_ID12_INFO("SMC", "2632W", 0xc4f8b18b, 0x30f38774, ATMEL_FW_TYPE_502D),
236	PCMCIA_DEVICE_PROD_ID12_INFO("SMC", "2632W-V2", 0xc4f8b18b, 0x172d1377, ATMEL_FW_TYPE_502),
237	PCMCIA_DEVICE_PROD_ID12_INFO("Wireless", "PC_CARD", 0xa407ecdd, 0x119f6314, ATMEL_FW_TYPE_502D),
238	PCMCIA_DEVICE_PROD_ID12_INFO("WLAN", "802.11b PC CARD", 0x575c516c, 0xb1f6dbc4, ATMEL_FW_TYPE_502D),
239	PCMCIA_DEVICE_PROD_ID12_INFO("LG", "LW2100N", 0xb474d43a, 0x6b1fec94, ATMEL_FW_TYPE_502E),
240	PCMCIA_DEVICE_NULL
241};
242
243MODULE_DEVICE_TABLE(pcmcia, atmel_ids);
244
245static struct pcmcia_driver atmel_driver = {
246	.owner		= THIS_MODULE,
247	.name		= "atmel_cs",
248	.probe          = atmel_probe,
249	.remove		= atmel_detach,
250	.id_table	= atmel_ids,
251	.suspend	= atmel_suspend,
252	.resume		= atmel_resume,
253};
254module_pcmcia_driver(atmel_driver);
255
256/*
257    This program is free software; you can redistribute it and/or
258    modify it under the terms of the GNU General Public License
259    as published by the Free Software Foundation; either version 2
260    of the License, or (at your option) any later version.
261
262    This program is distributed in the hope that it will be useful,
263    but WITHOUT ANY WARRANTY; without even the implied warranty of
264    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
265    GNU General Public License for more details.
266
267    In addition:
268
269    Redistribution and use in source and binary forms, with or without
270    modification, are permitted provided that the following conditions
271    are met:
272
273    1. Redistributions of source code must retain the above copyright
274       notice, this list of conditions and the following disclaimer.
275    2. Redistributions in binary form must reproduce the above copyright
276       notice, this list of conditions and the following disclaimer in the
277       documentation and/or other materials provided with the distribution.
278    3. The name of the author may not be used to endorse or promote
279       products derived from this software without specific prior written
280       permission.
281
282    THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
283    IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
284    WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
285    ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT,
286    INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
287    (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
288    SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
289    HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
290    STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING
291    IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
292    POSSIBILITY OF SUCH DAMAGE.
293*/
294