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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, write to the Free Software
28     Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
29 
30 ******************************************************************************/
31 
32 #ifdef __IN_PCMCIA_PACKAGE__
33 #include <pcmcia/k_compat.h>
34 #endif
35 #include <linux/init.h>
36 #include <linux/kernel.h>
37 #include <linux/module.h>
38 #include <linux/ptrace.h>
39 #include <linux/slab.h>
40 #include <linux/string.h>
41 #include <linux/netdevice.h>
42 #include <linux/moduleparam.h>
43 #include <linux/device.h>
44 
45 #include <pcmcia/cistpl.h>
46 #include <pcmcia/cisreg.h>
47 #include <pcmcia/ds.h>
48 #include <pcmcia/ciscode.h>
49 
50 #include <asm/io.h>
51 #include <linux/wireless.h>
52 
53 #include "atmel.h"
54 
55 
56 /*====================================================================*/
57 
58 MODULE_AUTHOR("Simon Kelley");
59 MODULE_DESCRIPTION("Support for Atmel at76c50x 802.11 wireless ethernet cards.");
60 MODULE_LICENSE("GPL");
61 MODULE_SUPPORTED_DEVICE("Atmel at76c50x PCMCIA cards");
62 
63 /*====================================================================*/
64 
65 static int atmel_config(struct pcmcia_device *link);
66 static void atmel_release(struct pcmcia_device *link);
67 
68 static void atmel_detach(struct pcmcia_device *p_dev);
69 
70 typedef struct local_info_t {
71 	struct net_device *eth_dev;
72 } local_info_t;
73 
atmel_probe(struct pcmcia_device * p_dev)74 static int atmel_probe(struct pcmcia_device *p_dev)
75 {
76 	local_info_t *local;
77 
78 	dev_dbg(&p_dev->dev, "atmel_attach()\n");
79 
80 	/* Allocate space for private device-specific data */
81 	local = kzalloc(sizeof(local_info_t), GFP_KERNEL);
82 	if (!local)
83 		return -ENOMEM;
84 
85 	p_dev->priv = local;
86 
87 	return atmel_config(p_dev);
88 } /* atmel_attach */
89 
atmel_detach(struct pcmcia_device * link)90 static void atmel_detach(struct pcmcia_device *link)
91 {
92 	dev_dbg(&link->dev, "atmel_detach\n");
93 
94 	atmel_release(link);
95 
96 	kfree(link->priv);
97 }
98 
99 /* Call-back function to interrogate PCMCIA-specific information
100    about the current existence of the card */
card_present(void * arg)101 static int card_present(void *arg)
102 {
103 	struct pcmcia_device *link = (struct pcmcia_device *)arg;
104 
105 	if (pcmcia_dev_present(link))
106 		return 1;
107 
108 	return 0;
109 }
110 
atmel_config_check(struct pcmcia_device * p_dev,void * priv_data)111 static int atmel_config_check(struct pcmcia_device *p_dev, void *priv_data)
112 {
113 	if (p_dev->config_index == 0)
114 		return -EINVAL;
115 
116 	return pcmcia_request_io(p_dev);
117 }
118 
atmel_config(struct pcmcia_device * link)119 static int atmel_config(struct pcmcia_device *link)
120 {
121 	local_info_t *dev;
122 	int ret;
123 	const struct pcmcia_device_id *did;
124 
125 	dev = link->priv;
126 	did = dev_get_drvdata(&link->dev);
127 
128 	dev_dbg(&link->dev, "atmel_config\n");
129 
130 	link->config_flags |= CONF_ENABLE_IRQ | CONF_AUTO_SET_VPP |
131 		CONF_AUTO_AUDIO | CONF_AUTO_SET_IO;
132 
133 	if (pcmcia_loop_config(link, atmel_config_check, NULL))
134 		goto failed;
135 
136 	if (!link->irq) {
137 		dev_err(&link->dev, "atmel: cannot assign IRQ: check that CONFIG_ISA is set in kernel config.");
138 		goto failed;
139 	}
140 
141 	ret = pcmcia_enable_device(link);
142 	if (ret)
143 		goto failed;
144 
145 	((local_info_t*)link->priv)->eth_dev =
146 		init_atmel_card(link->irq,
147 				link->resource[0]->start,
148 				did ? did->driver_info : ATMEL_FW_TYPE_NONE,
149 				&link->dev,
150 				card_present,
151 				link);
152 	if (!((local_info_t*)link->priv)->eth_dev)
153 			goto failed;
154 
155 
156 	return 0;
157 
158  failed:
159 	atmel_release(link);
160 	return -ENODEV;
161 }
162 
atmel_release(struct pcmcia_device * link)163 static void atmel_release(struct pcmcia_device *link)
164 {
165 	struct net_device *dev = ((local_info_t*)link->priv)->eth_dev;
166 
167 	dev_dbg(&link->dev, "atmel_release\n");
168 
169 	if (dev)
170 		stop_atmel_card(dev);
171 	((local_info_t*)link->priv)->eth_dev = NULL;
172 
173 	pcmcia_disable_device(link);
174 }
175 
atmel_suspend(struct pcmcia_device * link)176 static int atmel_suspend(struct pcmcia_device *link)
177 {
178 	local_info_t *local = link->priv;
179 
180 	netif_device_detach(local->eth_dev);
181 
182 	return 0;
183 }
184 
atmel_resume(struct pcmcia_device * link)185 static int atmel_resume(struct pcmcia_device *link)
186 {
187 	local_info_t *local = link->priv;
188 
189 	atmel_open(local->eth_dev);
190 	netif_device_attach(local->eth_dev);
191 
192 	return 0;
193 }
194 
195 /*====================================================================*/
196 /* We use the driver_info field to store the correct firmware type for a card. */
197 
198 #define PCMCIA_DEVICE_MANF_CARD_INFO(manf, card, info) { \
199 	.match_flags = PCMCIA_DEV_ID_MATCH_MANF_ID| \
200 			PCMCIA_DEV_ID_MATCH_CARD_ID, \
201 	.manf_id = (manf), \
202 	.card_id = (card), \
203         .driver_info = (kernel_ulong_t)(info), }
204 
205 #define PCMCIA_DEVICE_PROD_ID12_INFO(v1, v2, vh1, vh2, info) { \
206 	.match_flags = PCMCIA_DEV_ID_MATCH_PROD_ID1| \
207 			PCMCIA_DEV_ID_MATCH_PROD_ID2, \
208 	.prod_id = { (v1), (v2), NULL, NULL }, \
209 	.prod_id_hash = { (vh1), (vh2), 0, 0 }, \
210         .driver_info = (kernel_ulong_t)(info), }
211 
212 static const struct pcmcia_device_id atmel_ids[] = {
213 	PCMCIA_DEVICE_MANF_CARD_INFO(0x0101, 0x0620, ATMEL_FW_TYPE_502_3COM),
214 	PCMCIA_DEVICE_MANF_CARD_INFO(0x0101, 0x0696, ATMEL_FW_TYPE_502_3COM),
215 	PCMCIA_DEVICE_MANF_CARD_INFO(0x01bf, 0x3302, ATMEL_FW_TYPE_502E),
216 	PCMCIA_DEVICE_MANF_CARD_INFO(0xd601, 0x0007, ATMEL_FW_TYPE_502),
217 	PCMCIA_DEVICE_PROD_ID12_INFO("11WAVE", "11WP611AL-E", 0x9eb2da1f, 0xc9a0d3f9, ATMEL_FW_TYPE_502E),
218 	PCMCIA_DEVICE_PROD_ID12_INFO("ATMEL", "AT76C502AR", 0xabda4164, 0x41b37e1f, ATMEL_FW_TYPE_502),
219 	PCMCIA_DEVICE_PROD_ID12_INFO("ATMEL", "AT76C502AR_D", 0xabda4164, 0x3675d704, ATMEL_FW_TYPE_502D),
220 	PCMCIA_DEVICE_PROD_ID12_INFO("ATMEL", "AT76C502AR_E", 0xabda4164, 0x4172e792, ATMEL_FW_TYPE_502E),
221 	PCMCIA_DEVICE_PROD_ID12_INFO("ATMEL", "AT76C504_R", 0xabda4164, 0x917f3d72, ATMEL_FW_TYPE_504_2958),
222 	PCMCIA_DEVICE_PROD_ID12_INFO("ATMEL", "AT76C504", 0xabda4164, 0x5040670a, ATMEL_FW_TYPE_504),
223 	PCMCIA_DEVICE_PROD_ID12_INFO("ATMEL", "AT76C504A", 0xabda4164, 0xe15ed87f, ATMEL_FW_TYPE_504A_2958),
224 	PCMCIA_DEVICE_PROD_ID12_INFO("BT", "Voyager 1020 Laptop Adapter", 0xae49b86a, 0x1e957cd5, ATMEL_FW_TYPE_502),
225 	PCMCIA_DEVICE_PROD_ID12_INFO("CNet", "CNWLC 11Mbps Wireless PC Card V-5", 0xbc477dde, 0x502fae6b, ATMEL_FW_TYPE_502E),
226 	PCMCIA_DEVICE_PROD_ID12_INFO("IEEE 802.11b", "Wireless LAN PC Card", 0x5b878724, 0x122f1df6, ATMEL_FW_TYPE_502),
227 	PCMCIA_DEVICE_PROD_ID12_INFO("IEEE 802.11b", "Wireless LAN Card S", 0x5b878724, 0x5fba533a, ATMEL_FW_TYPE_504_2958),
228 	PCMCIA_DEVICE_PROD_ID12_INFO("OEM", "11Mbps Wireless LAN PC Card V-3", 0xfea54c90, 0x1c5b0f68, ATMEL_FW_TYPE_502),
229 	PCMCIA_DEVICE_PROD_ID12_INFO("SMC", "2632W", 0xc4f8b18b, 0x30f38774, ATMEL_FW_TYPE_502D),
230 	PCMCIA_DEVICE_PROD_ID12_INFO("SMC", "2632W-V2", 0xc4f8b18b, 0x172d1377, ATMEL_FW_TYPE_502),
231 	PCMCIA_DEVICE_PROD_ID12_INFO("Wireless", "PC_CARD", 0xa407ecdd, 0x119f6314, ATMEL_FW_TYPE_502D),
232 	PCMCIA_DEVICE_PROD_ID12_INFO("WLAN", "802.11b PC CARD", 0x575c516c, 0xb1f6dbc4, ATMEL_FW_TYPE_502D),
233 	PCMCIA_DEVICE_PROD_ID12_INFO("LG", "LW2100N", 0xb474d43a, 0x6b1fec94, ATMEL_FW_TYPE_502E),
234 	PCMCIA_DEVICE_NULL
235 };
236 
237 MODULE_DEVICE_TABLE(pcmcia, atmel_ids);
238 
239 static struct pcmcia_driver atmel_driver = {
240 	.owner		= THIS_MODULE,
241 	.name		= "atmel_cs",
242 	.probe          = atmel_probe,
243 	.remove		= atmel_detach,
244 	.id_table	= atmel_ids,
245 	.suspend	= atmel_suspend,
246 	.resume		= atmel_resume,
247 };
248 module_pcmcia_driver(atmel_driver);
249 
250 /*
251     This program is free software; you can redistribute it and/or
252     modify it under the terms of the GNU General Public License
253     as published by the Free Software Foundation; either version 2
254     of the License, or (at your option) any later version.
255 
256     This program is distributed in the hope that it will be useful,
257     but WITHOUT ANY WARRANTY; without even the implied warranty of
258     MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
259     GNU General Public License for more details.
260 
261     In addition:
262 
263     Redistribution and use in source and binary forms, with or without
264     modification, are permitted provided that the following conditions
265     are met:
266 
267     1. Redistributions of source code must retain the above copyright
268        notice, this list of conditions and the following disclaimer.
269     2. Redistributions in binary form must reproduce the above copyright
270        notice, this list of conditions and the following disclaimer in the
271        documentation and/or other materials provided with the distribution.
272     3. The name of the author may not be used to endorse or promote
273        products derived from this software without specific prior written
274        permission.
275 
276     THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
277     IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
278     WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
279     ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT,
280     INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
281     (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
282     SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
283     HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
284     STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING
285     IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
286     POSSIBILITY OF SUCH DAMAGE.
287 */
288