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 MODULE_SUPPORTED_DEVICE("Atmel at76c50x PCMCIA cards");
61
62 /*====================================================================*/
63
64 static int atmel_config(struct pcmcia_device *link);
65 static void atmel_release(struct pcmcia_device *link);
66
67 static void atmel_detach(struct pcmcia_device *p_dev);
68
69 struct local_info {
70 struct net_device *eth_dev;
71 };
72
atmel_probe(struct pcmcia_device *p_dev)73 static 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
93 err_free_priv:
94 kfree(p_dev->priv);
95 return ret;
96 }
97
atmel_detach(struct pcmcia_device *link)98 static 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 */
card_present(void *arg)109 static 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
atmel_config_check(struct pcmcia_device *p_dev, void *priv_data)119 static 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
atmel_config(struct pcmcia_device *link)127 static 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
atmel_release(struct pcmcia_device *link)169 static 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
atmel_suspend(struct pcmcia_device *link)182 static 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
atmel_resume(struct pcmcia_device *link)191 static 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
218 static 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
243 MODULE_DEVICE_TABLE(pcmcia, atmel_ids);
244
245 static 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 };
254 module_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