1 /*** -*- linux-c -*- **********************************************************
3 Driver for Atmel at76c502 at76c504 and at76c506 wireless cards.
5 Copyright 2000-2001 ATMEL Corporation.
6 Copyright 2003 Simon Kelley.
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.
13 For all queries about this code, please contact the current author,
14 Simon Kelley <simon@thekelleys.org.uk> and not Atmel Corporation.
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.
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.
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
30 ******************************************************************************/
32 #ifdef __IN_PCMCIA_PACKAGE__
33 #include <pcmcia/k_compat.h>
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>
45 #include <pcmcia/cistpl.h>
46 #include <pcmcia/cisreg.h>
47 #include <pcmcia/ds.h>
48 #include <pcmcia/ciscode.h>
51 #include <asm/system.h>
52 #include <linux/wireless.h>
57 /*====================================================================*/
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");
64 /*====================================================================*/
67 The event() function is this driver's Card Services event handler.
68 It will be called by Card Services when an appropriate card status
69 event is received. The config() and release() entry points are
70 used to configure or release a socket, in response to card
71 insertion and ejection events. They are invoked from the atmel_cs
75 static int atmel_config(struct pcmcia_device *link);
76 static void atmel_release(struct pcmcia_device *link);
79 The attach() and detach() entry points are used to create and destroy
80 "instances" of the driver, where each instance represents everything
81 needed to manage one actual PCMCIA card.
84 static void atmel_detach(struct pcmcia_device *p_dev);
86 typedef struct local_info_t {
87 struct net_device *eth_dev;
90 /*======================================================================
92 atmel_attach() creates an "instance" of the driver, allocating
93 local data structures for one device. The device is registered
96 The dev_link structure is initialized, but we don't actually
97 configure the card at this point -- we wait until we receive a
100 ======================================================================*/
102 static int atmel_probe(struct pcmcia_device *p_dev)
106 dev_dbg(&p_dev->dev, "atmel_attach()\n");
108 /* Allocate space for private device-specific data */
109 local = kzalloc(sizeof(local_info_t), GFP_KERNEL);
111 printk(KERN_ERR "atmel_cs: no memory for new device\n");
116 return atmel_config(p_dev);
119 /*======================================================================
121 This deletes a driver "instance". The device is de-registered
122 with Card Services. If it has been released, all local data
123 structures are freed. Otherwise, the structures will be freed
124 when the device is released.
126 ======================================================================*/
128 static void atmel_detach(struct pcmcia_device *link)
130 dev_dbg(&link->dev, "atmel_detach\n");
137 /*======================================================================
139 atmel_config() is scheduled to run after a CARD_INSERTION event
140 is received, to configure the PCMCIA socket, and to make the
141 device available to the system.
143 ======================================================================*/
145 /* Call-back function to interrogate PCMCIA-specific information
146 about the current existance of the card */
147 static int card_present(void *arg)
149 struct pcmcia_device *link = (struct pcmcia_device *)arg;
151 if (pcmcia_dev_present(link))
157 static int atmel_config_check(struct pcmcia_device *p_dev,
158 cistpl_cftable_entry_t *cfg,
159 cistpl_cftable_entry_t *dflt,
166 /* Does this card need audio output? */
167 if (cfg->flags & CISTPL_CFTABLE_AUDIO)
168 p_dev->config_flags |= CONF_ENABLE_SPKR;
170 /* Use power settings for Vcc and Vpp if present */
171 /* Note that the CIS values need to be rescaled */
172 if (cfg->vpp1.present & (1<<CISTPL_POWER_VNOM))
173 p_dev->vpp = cfg->vpp1.param[CISTPL_POWER_VNOM]/10000;
174 else if (dflt->vpp1.present & (1<<CISTPL_POWER_VNOM))
175 p_dev->vpp = dflt->vpp1.param[CISTPL_POWER_VNOM]/10000;
177 p_dev->config_flags |= CONF_ENABLE_IRQ;
179 /* IO window settings */
180 p_dev->resource[0]->end = p_dev->resource[1]->end = 0;
181 if ((cfg->io.nwin > 0) || (dflt->io.nwin > 0)) {
182 cistpl_io_t *io = (cfg->io.nwin) ? &cfg->io : &dflt->io;
183 p_dev->resource[0]->flags &= ~IO_DATA_PATH_WIDTH;
184 p_dev->resource[0]->flags |=
185 pcmcia_io_cfg_data_width(io->flags);
186 p_dev->resource[0]->start = io->win[0].base;
187 p_dev->resource[0]->end = io->win[0].len;
189 p_dev->resource[1]->flags = p_dev->resource[0]->flags;
190 p_dev->resource[1]->start = io->win[1].base;
191 p_dev->resource[1]->end = io->win[1].len;
195 /* This reserves IO space but doesn't actually enable it */
196 return pcmcia_request_io(p_dev);
199 static int atmel_config(struct pcmcia_device *link)
203 struct pcmcia_device_id *did;
206 did = dev_get_drvdata(&link->dev);
208 dev_dbg(&link->dev, "atmel_config\n");
211 In this loop, we scan the CIS for configuration table entries,
212 each of which describes a valid card configuration, including
213 voltage, IO window, memory window, and interrupt settings.
215 We make no assumptions about the card to be configured: we use
216 just the information available in the CIS. In an ideal world,
217 this would work for any PCMCIA card, but it requires a complete
218 and accurate CIS. In practice, a driver usually "knows" most of
219 these things without consulting the CIS, and most client drivers
220 will only use the CIS to fill in implementation-defined details.
222 if (pcmcia_loop_config(link, atmel_config_check, NULL))
226 dev_err(&link->dev, "atmel: cannot assign IRQ: check that CONFIG_ISA is set in kernel config.");
231 This actually configures the PCMCIA socket -- setting up
232 the I/O windows and the interrupt mapping, and putting the
233 card and host interface into "Memory and IO" mode.
235 ret = pcmcia_enable_device(link);
239 ((local_info_t*)link->priv)->eth_dev =
240 init_atmel_card(link->irq,
241 link->resource[0]->start,
242 did ? did->driver_info : ATMEL_FW_TYPE_NONE,
246 if (!((local_info_t*)link->priv)->eth_dev)
257 /*======================================================================
259 After a card is removed, atmel_release() will unregister the
260 device, and release the PCMCIA configuration. If the device is
261 still open, this will be postponed until it is closed.
263 ======================================================================*/
265 static void atmel_release(struct pcmcia_device *link)
267 struct net_device *dev = ((local_info_t*)link->priv)->eth_dev;
269 dev_dbg(&link->dev, "atmel_release\n");
272 stop_atmel_card(dev);
273 ((local_info_t*)link->priv)->eth_dev = NULL;
275 pcmcia_disable_device(link);
278 static int atmel_suspend(struct pcmcia_device *link)
280 local_info_t *local = link->priv;
282 netif_device_detach(local->eth_dev);
287 static int atmel_resume(struct pcmcia_device *link)
289 local_info_t *local = link->priv;
291 atmel_open(local->eth_dev);
292 netif_device_attach(local->eth_dev);
297 /*====================================================================*/
298 /* We use the driver_info field to store the correct firmware type for a card. */
300 #define PCMCIA_DEVICE_MANF_CARD_INFO(manf, card, info) { \
301 .match_flags = PCMCIA_DEV_ID_MATCH_MANF_ID| \
302 PCMCIA_DEV_ID_MATCH_CARD_ID, \
305 .driver_info = (kernel_ulong_t)(info), }
307 #define PCMCIA_DEVICE_PROD_ID12_INFO(v1, v2, vh1, vh2, info) { \
308 .match_flags = PCMCIA_DEV_ID_MATCH_PROD_ID1| \
309 PCMCIA_DEV_ID_MATCH_PROD_ID2, \
310 .prod_id = { (v1), (v2), NULL, NULL }, \
311 .prod_id_hash = { (vh1), (vh2), 0, 0 }, \
312 .driver_info = (kernel_ulong_t)(info), }
314 static struct pcmcia_device_id atmel_ids[] = {
315 PCMCIA_DEVICE_MANF_CARD_INFO(0x0101, 0x0620, ATMEL_FW_TYPE_502_3COM),
316 PCMCIA_DEVICE_MANF_CARD_INFO(0x0101, 0x0696, ATMEL_FW_TYPE_502_3COM),
317 PCMCIA_DEVICE_MANF_CARD_INFO(0x01bf, 0x3302, ATMEL_FW_TYPE_502E),
318 PCMCIA_DEVICE_MANF_CARD_INFO(0xd601, 0x0007, ATMEL_FW_TYPE_502),
319 PCMCIA_DEVICE_PROD_ID12_INFO("11WAVE", "11WP611AL-E", 0x9eb2da1f, 0xc9a0d3f9, ATMEL_FW_TYPE_502E),
320 PCMCIA_DEVICE_PROD_ID12_INFO("ATMEL", "AT76C502AR", 0xabda4164, 0x41b37e1f, ATMEL_FW_TYPE_502),
321 PCMCIA_DEVICE_PROD_ID12_INFO("ATMEL", "AT76C502AR_D", 0xabda4164, 0x3675d704, ATMEL_FW_TYPE_502D),
322 PCMCIA_DEVICE_PROD_ID12_INFO("ATMEL", "AT76C502AR_E", 0xabda4164, 0x4172e792, ATMEL_FW_TYPE_502E),
323 PCMCIA_DEVICE_PROD_ID12_INFO("ATMEL", "AT76C504_R", 0xabda4164, 0x917f3d72, ATMEL_FW_TYPE_504_2958),
324 PCMCIA_DEVICE_PROD_ID12_INFO("ATMEL", "AT76C504", 0xabda4164, 0x5040670a, ATMEL_FW_TYPE_504),
325 PCMCIA_DEVICE_PROD_ID12_INFO("ATMEL", "AT76C504A", 0xabda4164, 0xe15ed87f, ATMEL_FW_TYPE_504A_2958),
326 PCMCIA_DEVICE_PROD_ID12_INFO("BT", "Voyager 1020 Laptop Adapter", 0xae49b86a, 0x1e957cd5, ATMEL_FW_TYPE_502),
327 PCMCIA_DEVICE_PROD_ID12_INFO("CNet", "CNWLC 11Mbps Wireless PC Card V-5", 0xbc477dde, 0x502fae6b, ATMEL_FW_TYPE_502E),
328 PCMCIA_DEVICE_PROD_ID12_INFO("IEEE 802.11b", "Wireless LAN PC Card", 0x5b878724, 0x122f1df6, ATMEL_FW_TYPE_502),
329 PCMCIA_DEVICE_PROD_ID12_INFO("IEEE 802.11b", "Wireless LAN Card S", 0x5b878724, 0x5fba533a, ATMEL_FW_TYPE_504_2958),
330 PCMCIA_DEVICE_PROD_ID12_INFO("OEM", "11Mbps Wireless LAN PC Card V-3", 0xfea54c90, 0x1c5b0f68, ATMEL_FW_TYPE_502),
331 PCMCIA_DEVICE_PROD_ID12_INFO("SMC", "2632W", 0xc4f8b18b, 0x30f38774, ATMEL_FW_TYPE_502D),
332 PCMCIA_DEVICE_PROD_ID12_INFO("SMC", "2632W-V2", 0xc4f8b18b, 0x172d1377, ATMEL_FW_TYPE_502),
333 PCMCIA_DEVICE_PROD_ID12_INFO("Wireless", "PC_CARD", 0xa407ecdd, 0x119f6314, ATMEL_FW_TYPE_502D),
334 PCMCIA_DEVICE_PROD_ID12_INFO("WLAN", "802.11b PC CARD", 0x575c516c, 0xb1f6dbc4, ATMEL_FW_TYPE_502D),
335 PCMCIA_DEVICE_PROD_ID12_INFO("LG", "LW2100N", 0xb474d43a, 0x6b1fec94, ATMEL_FW_TYPE_502E),
339 MODULE_DEVICE_TABLE(pcmcia, atmel_ids);
341 static struct pcmcia_driver atmel_driver = {
342 .owner = THIS_MODULE,
346 .probe = atmel_probe,
347 .remove = atmel_detach,
348 .id_table = atmel_ids,
349 .suspend = atmel_suspend,
350 .resume = atmel_resume,
353 static int atmel_cs_init(void)
355 return pcmcia_register_driver(&atmel_driver);
358 static void atmel_cs_cleanup(void)
360 pcmcia_unregister_driver(&atmel_driver);
364 This program is free software; you can redistribute it and/or
365 modify it under the terms of the GNU General Public License
366 as published by the Free Software Foundation; either version 2
367 of the License, or (at your option) any later version.
369 This program is distributed in the hope that it will be useful,
370 but WITHOUT ANY WARRANTY; without even the implied warranty of
371 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
372 GNU General Public License for more details.
376 Redistribution and use in source and binary forms, with or without
377 modification, are permitted provided that the following conditions
380 1. Redistributions of source code must retain the above copyright
381 notice, this list of conditions and the following disclaimer.
382 2. Redistributions in binary form must reproduce the above copyright
383 notice, this list of conditions and the following disclaimer in the
384 documentation and/or other materials provided with the distribution.
385 3. The name of the author may not be used to endorse or promote
386 products derived from this software without specific prior written
389 THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
390 IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
391 WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
392 ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT,
393 INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
394 (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
395 SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
396 HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
397 STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING
398 IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
399 POSSIBILITY OF SUCH DAMAGE.
402 module_init(atmel_cs_init);
403 module_exit(atmel_cs_cleanup);