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