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 <asm/system.h>
52 #include <linux/wireless.h>
53
54 #include "atmel.h"
55
56
57 /*====================================================================*/
58
59 MODULE_AUTHOR("Simon Kelley");
60 MODULE_DESCRIPTION("Support for Atmel at76c50x 802.11 wireless ethernet cards.");
61 MODULE_LICENSE("GPL");
62 MODULE_SUPPORTED_DEVICE("Atmel at76c50x PCMCIA cards");
63
64 /*====================================================================*/
65
66 static int atmel_config(struct pcmcia_device *link);
67 static void atmel_release(struct pcmcia_device *link);
68
69 static void atmel_detach(struct pcmcia_device *p_dev);
70
71 typedef struct local_info_t {
72 struct net_device *eth_dev;
73 } local_info_t;
74
atmel_probe(struct pcmcia_device * p_dev)75 static int atmel_probe(struct pcmcia_device *p_dev)
76 {
77 local_info_t *local;
78
79 dev_dbg(&p_dev->dev, "atmel_attach()\n");
80
81 /* Allocate space for private device-specific data */
82 local = kzalloc(sizeof(local_info_t), GFP_KERNEL);
83 if (!local) {
84 printk(KERN_ERR "atmel_cs: no memory for new device\n");
85 return -ENOMEM;
86 }
87 p_dev->priv = local;
88
89 return atmel_config(p_dev);
90 } /* atmel_attach */
91
atmel_detach(struct pcmcia_device * link)92 static void atmel_detach(struct pcmcia_device *link)
93 {
94 dev_dbg(&link->dev, "atmel_detach\n");
95
96 atmel_release(link);
97
98 kfree(link->priv);
99 }
100
101 /* Call-back function to interrogate PCMCIA-specific information
102 about the current existence of the card */
card_present(void * arg)103 static int card_present(void *arg)
104 {
105 struct pcmcia_device *link = (struct pcmcia_device *)arg;
106
107 if (pcmcia_dev_present(link))
108 return 1;
109
110 return 0;
111 }
112
atmel_config_check(struct pcmcia_device * p_dev,void * priv_data)113 static int atmel_config_check(struct pcmcia_device *p_dev, void *priv_data)
114 {
115 if (p_dev->config_index == 0)
116 return -EINVAL;
117
118 return pcmcia_request_io(p_dev);
119 }
120
atmel_config(struct pcmcia_device * link)121 static int atmel_config(struct pcmcia_device *link)
122 {
123 local_info_t *dev;
124 int ret;
125 const struct pcmcia_device_id *did;
126
127 dev = link->priv;
128 did = dev_get_drvdata(&link->dev);
129
130 dev_dbg(&link->dev, "atmel_config\n");
131
132 link->config_flags |= CONF_ENABLE_IRQ | CONF_AUTO_SET_VPP |
133 CONF_AUTO_AUDIO | CONF_AUTO_SET_IO;
134
135 if (pcmcia_loop_config(link, atmel_config_check, NULL))
136 goto failed;
137
138 if (!link->irq) {
139 dev_err(&link->dev, "atmel: cannot assign IRQ: check that CONFIG_ISA is set in kernel config.");
140 goto failed;
141 }
142
143 ret = pcmcia_enable_device(link);
144 if (ret)
145 goto failed;
146
147 ((local_info_t*)link->priv)->eth_dev =
148 init_atmel_card(link->irq,
149 link->resource[0]->start,
150 did ? did->driver_info : ATMEL_FW_TYPE_NONE,
151 &link->dev,
152 card_present,
153 link);
154 if (!((local_info_t*)link->priv)->eth_dev)
155 goto failed;
156
157
158 return 0;
159
160 failed:
161 atmel_release(link);
162 return -ENODEV;
163 }
164
atmel_release(struct pcmcia_device * link)165 static void atmel_release(struct pcmcia_device *link)
166 {
167 struct net_device *dev = ((local_info_t*)link->priv)->eth_dev;
168
169 dev_dbg(&link->dev, "atmel_release\n");
170
171 if (dev)
172 stop_atmel_card(dev);
173 ((local_info_t*)link->priv)->eth_dev = NULL;
174
175 pcmcia_disable_device(link);
176 }
177
atmel_suspend(struct pcmcia_device * link)178 static int atmel_suspend(struct pcmcia_device *link)
179 {
180 local_info_t *local = link->priv;
181
182 netif_device_detach(local->eth_dev);
183
184 return 0;
185 }
186
atmel_resume(struct pcmcia_device * link)187 static int atmel_resume(struct pcmcia_device *link)
188 {
189 local_info_t *local = link->priv;
190
191 atmel_open(local->eth_dev);
192 netif_device_attach(local->eth_dev);
193
194 return 0;
195 }
196
197 /*====================================================================*/
198 /* We use the driver_info field to store the correct firmware type for a card. */
199
200 #define PCMCIA_DEVICE_MANF_CARD_INFO(manf, card, info) { \
201 .match_flags = PCMCIA_DEV_ID_MATCH_MANF_ID| \
202 PCMCIA_DEV_ID_MATCH_CARD_ID, \
203 .manf_id = (manf), \
204 .card_id = (card), \
205 .driver_info = (kernel_ulong_t)(info), }
206
207 #define PCMCIA_DEVICE_PROD_ID12_INFO(v1, v2, vh1, vh2, info) { \
208 .match_flags = PCMCIA_DEV_ID_MATCH_PROD_ID1| \
209 PCMCIA_DEV_ID_MATCH_PROD_ID2, \
210 .prod_id = { (v1), (v2), NULL, NULL }, \
211 .prod_id_hash = { (vh1), (vh2), 0, 0 }, \
212 .driver_info = (kernel_ulong_t)(info), }
213
214 static const struct pcmcia_device_id atmel_ids[] = {
215 PCMCIA_DEVICE_MANF_CARD_INFO(0x0101, 0x0620, ATMEL_FW_TYPE_502_3COM),
216 PCMCIA_DEVICE_MANF_CARD_INFO(0x0101, 0x0696, ATMEL_FW_TYPE_502_3COM),
217 PCMCIA_DEVICE_MANF_CARD_INFO(0x01bf, 0x3302, ATMEL_FW_TYPE_502E),
218 PCMCIA_DEVICE_MANF_CARD_INFO(0xd601, 0x0007, ATMEL_FW_TYPE_502),
219 PCMCIA_DEVICE_PROD_ID12_INFO("11WAVE", "11WP611AL-E", 0x9eb2da1f, 0xc9a0d3f9, ATMEL_FW_TYPE_502E),
220 PCMCIA_DEVICE_PROD_ID12_INFO("ATMEL", "AT76C502AR", 0xabda4164, 0x41b37e1f, ATMEL_FW_TYPE_502),
221 PCMCIA_DEVICE_PROD_ID12_INFO("ATMEL", "AT76C502AR_D", 0xabda4164, 0x3675d704, ATMEL_FW_TYPE_502D),
222 PCMCIA_DEVICE_PROD_ID12_INFO("ATMEL", "AT76C502AR_E", 0xabda4164, 0x4172e792, ATMEL_FW_TYPE_502E),
223 PCMCIA_DEVICE_PROD_ID12_INFO("ATMEL", "AT76C504_R", 0xabda4164, 0x917f3d72, ATMEL_FW_TYPE_504_2958),
224 PCMCIA_DEVICE_PROD_ID12_INFO("ATMEL", "AT76C504", 0xabda4164, 0x5040670a, ATMEL_FW_TYPE_504),
225 PCMCIA_DEVICE_PROD_ID12_INFO("ATMEL", "AT76C504A", 0xabda4164, 0xe15ed87f, ATMEL_FW_TYPE_504A_2958),
226 PCMCIA_DEVICE_PROD_ID12_INFO("BT", "Voyager 1020 Laptop Adapter", 0xae49b86a, 0x1e957cd5, ATMEL_FW_TYPE_502),
227 PCMCIA_DEVICE_PROD_ID12_INFO("CNet", "CNWLC 11Mbps Wireless PC Card V-5", 0xbc477dde, 0x502fae6b, ATMEL_FW_TYPE_502E),
228 PCMCIA_DEVICE_PROD_ID12_INFO("IEEE 802.11b", "Wireless LAN PC Card", 0x5b878724, 0x122f1df6, ATMEL_FW_TYPE_502),
229 PCMCIA_DEVICE_PROD_ID12_INFO("IEEE 802.11b", "Wireless LAN Card S", 0x5b878724, 0x5fba533a, ATMEL_FW_TYPE_504_2958),
230 PCMCIA_DEVICE_PROD_ID12_INFO("OEM", "11Mbps Wireless LAN PC Card V-3", 0xfea54c90, 0x1c5b0f68, ATMEL_FW_TYPE_502),
231 PCMCIA_DEVICE_PROD_ID12_INFO("SMC", "2632W", 0xc4f8b18b, 0x30f38774, ATMEL_FW_TYPE_502D),
232 PCMCIA_DEVICE_PROD_ID12_INFO("SMC", "2632W-V2", 0xc4f8b18b, 0x172d1377, ATMEL_FW_TYPE_502),
233 PCMCIA_DEVICE_PROD_ID12_INFO("Wireless", "PC_CARD", 0xa407ecdd, 0x119f6314, ATMEL_FW_TYPE_502D),
234 PCMCIA_DEVICE_PROD_ID12_INFO("WLAN", "802.11b PC CARD", 0x575c516c, 0xb1f6dbc4, ATMEL_FW_TYPE_502D),
235 PCMCIA_DEVICE_PROD_ID12_INFO("LG", "LW2100N", 0xb474d43a, 0x6b1fec94, ATMEL_FW_TYPE_502E),
236 PCMCIA_DEVICE_NULL
237 };
238
239 MODULE_DEVICE_TABLE(pcmcia, atmel_ids);
240
241 static struct pcmcia_driver atmel_driver = {
242 .owner = THIS_MODULE,
243 .name = "atmel_cs",
244 .probe = atmel_probe,
245 .remove = atmel_detach,
246 .id_table = atmel_ids,
247 .suspend = atmel_suspend,
248 .resume = atmel_resume,
249 };
250
atmel_cs_init(void)251 static int __init atmel_cs_init(void)
252 {
253 return pcmcia_register_driver(&atmel_driver);
254 }
255
atmel_cs_cleanup(void)256 static void __exit atmel_cs_cleanup(void)
257 {
258 pcmcia_unregister_driver(&atmel_driver);
259 }
260
261 /*
262 This program is free software; you can redistribute it and/or
263 modify it under the terms of the GNU General Public License
264 as published by the Free Software Foundation; either version 2
265 of the License, or (at your option) any later version.
266
267 This program is distributed in the hope that it will be useful,
268 but WITHOUT ANY WARRANTY; without even the implied warranty of
269 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
270 GNU General Public License for more details.
271
272 In addition:
273
274 Redistribution and use in source and binary forms, with or without
275 modification, are permitted provided that the following conditions
276 are met:
277
278 1. Redistributions of source code must retain the above copyright
279 notice, this list of conditions and the following disclaimer.
280 2. Redistributions in binary form must reproduce the above copyright
281 notice, this list of conditions and the following disclaimer in the
282 documentation and/or other materials provided with the distribution.
283 3. The name of the author may not be used to endorse or promote
284 products derived from this software without specific prior written
285 permission.
286
287 THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
288 IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
289 WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
290 ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT,
291 INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
292 (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
293 SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
294 HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
295 STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING
296 IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
297 POSSIBILITY OF SUCH DAMAGE.
298 */
299
300 module_init(atmel_cs_init);
301 module_exit(atmel_cs_cleanup);
302