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
atmel_probe(struct pcmcia_device * p_dev)72 static 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
92 err_free_priv:
93 kfree(p_dev->priv);
94 return ret;
95 }
96
atmel_detach(struct pcmcia_device * link)97 static 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 */
card_present(void * arg)108 static 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
atmel_config_check(struct pcmcia_device * p_dev,void * priv_data)118 static 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
atmel_config(struct pcmcia_device * link)126 static 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
atmel_release(struct pcmcia_device * link)168 static 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
atmel_suspend(struct pcmcia_device * link)181 static 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
atmel_resume(struct pcmcia_device * link)190 static 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
217 static 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
242 MODULE_DEVICE_TABLE(pcmcia, atmel_ids);
243
244 static 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 };
253 module_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