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Linux/drivers/net/wireless/atmel_cs.c

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

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