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
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
atmel_detach(struct pcmcia_device * link)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 */
card_present(void * arg)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
atmel_config_check(struct pcmcia_device * p_dev,void * priv_data)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
atmel_config(struct pcmcia_device * link)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
atmel_release(struct pcmcia_device * link)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
atmel_suspend(struct pcmcia_device * link)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
atmel_resume(struct pcmcia_device * link)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