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