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/cs.h>
46 #include <pcmcia/cistpl.h>
47 #include <pcmcia/cisreg.h>
48 #include <pcmcia/ds.h>
49 #include <pcmcia/ciscode.h>
52 #include <asm/system.h>
53 #include <linux/wireless.h>
58 /*====================================================================*/
60 MODULE_AUTHOR("Simon Kelley");
61 MODULE_DESCRIPTION("Support for Atmel at76c50x 802.11 wireless ethernet cards.");
62 MODULE_LICENSE("GPL");
63 MODULE_SUPPORTED_DEVICE("Atmel at76c50x PCMCIA cards");
65 /*====================================================================*/
68 The event() function is this driver's Card Services event handler.
69 It will be called by Card Services when an appropriate card status
70 event is received. The config() and release() entry points are
71 used to configure or release a socket, in response to card
72 insertion and ejection events. They are invoked from the atmel_cs
76 static int atmel_config(struct pcmcia_device *link);
77 static void atmel_release(struct pcmcia_device *link);
80 The attach() and detach() entry points are used to create and destroy
81 "instances" of the driver, where each instance represents everything
82 needed to manage one actual PCMCIA card.
85 static void atmel_detach(struct pcmcia_device *p_dev);
87 typedef struct local_info_t {
88 struct net_device *eth_dev;
91 /*======================================================================
93 atmel_attach() creates an "instance" of the driver, allocating
94 local data structures for one device. The device is registered
97 The dev_link structure is initialized, but we don't actually
98 configure the card at this point -- we wait until we receive a
101 ======================================================================*/
103 static int atmel_probe(struct pcmcia_device *p_dev)
107 dev_dbg(&p_dev->dev, "atmel_attach()\n");
110 General socket configuration defaults can go here. In this
111 client, we assume very little, and rely on the CIS for almost
112 everything. In most clients, many details (i.e., number, sizes,
113 and attributes of IO windows) are fixed by the nature of the
114 device, and can be hard-wired here.
116 p_dev->conf.Attributes = 0;
117 p_dev->conf.IntType = INT_MEMORY_AND_IO;
119 /* Allocate space for private device-specific data */
120 local = kzalloc(sizeof(local_info_t), GFP_KERNEL);
122 printk(KERN_ERR "atmel_cs: no memory for new device\n");
127 return atmel_config(p_dev);
130 /*======================================================================
132 This deletes a driver "instance". The device is de-registered
133 with Card Services. If it has been released, all local data
134 structures are freed. Otherwise, the structures will be freed
135 when the device is released.
137 ======================================================================*/
139 static void atmel_detach(struct pcmcia_device *link)
141 dev_dbg(&link->dev, "atmel_detach\n");
148 /*======================================================================
150 atmel_config() is scheduled to run after a CARD_INSERTION event
151 is received, to configure the PCMCIA socket, and to make the
152 device available to the system.
154 ======================================================================*/
156 /* Call-back function to interrogate PCMCIA-specific information
157 about the current existance of the card */
158 static int card_present(void *arg)
160 struct pcmcia_device *link = (struct pcmcia_device *)arg;
162 if (pcmcia_dev_present(link))
168 static int atmel_config_check(struct pcmcia_device *p_dev,
169 cistpl_cftable_entry_t *cfg,
170 cistpl_cftable_entry_t *dflt,
177 /* Does this card need audio output? */
178 if (cfg->flags & CISTPL_CFTABLE_AUDIO) {
179 p_dev->conf.Attributes |= CONF_ENABLE_SPKR;
180 p_dev->conf.Status = CCSR_AUDIO_ENA;
183 /* Use power settings for Vcc and Vpp if present */
184 /* Note that the CIS values need to be rescaled */
185 if (cfg->vpp1.present & (1<<CISTPL_POWER_VNOM))
186 p_dev->conf.Vpp = cfg->vpp1.param[CISTPL_POWER_VNOM]/10000;
187 else if (dflt->vpp1.present & (1<<CISTPL_POWER_VNOM))
188 p_dev->conf.Vpp = dflt->vpp1.param[CISTPL_POWER_VNOM]/10000;
190 p_dev->conf.Attributes |= CONF_ENABLE_IRQ;
192 /* IO window settings */
193 p_dev->resource[0]->end = p_dev->resource[1]->end = 0;
194 if ((cfg->io.nwin > 0) || (dflt->io.nwin > 0)) {
195 cistpl_io_t *io = (cfg->io.nwin) ? &cfg->io : &dflt->io;
196 p_dev->resource[0]->flags &= ~IO_DATA_PATH_WIDTH;
197 p_dev->resource[0]->flags |=
198 pcmcia_io_cfg_data_width(io->flags);
199 p_dev->resource[0]->start = io->win[0].base;
200 p_dev->resource[0]->end = io->win[0].len;
202 p_dev->resource[1]->flags = p_dev->resource[0]->flags;
203 p_dev->resource[1]->start = io->win[1].base;
204 p_dev->resource[1]->end = io->win[1].len;
208 /* This reserves IO space but doesn't actually enable it */
209 return pcmcia_request_io(p_dev);
212 static int atmel_config(struct pcmcia_device *link)
216 struct pcmcia_device_id *did;
219 did = dev_get_drvdata(&link->dev);
221 dev_dbg(&link->dev, "atmel_config\n");
224 In this loop, we scan the CIS for configuration table entries,
225 each of which describes a valid card configuration, including
226 voltage, IO window, memory window, and interrupt settings.
228 We make no assumptions about the card to be configured: we use
229 just the information available in the CIS. In an ideal world,
230 this would work for any PCMCIA card, but it requires a complete
231 and accurate CIS. In practice, a driver usually "knows" most of
232 these things without consulting the CIS, and most client drivers
233 will only use the CIS to fill in implementation-defined details.
235 if (pcmcia_loop_config(link, atmel_config_check, NULL))
239 dev_err(&link->dev, "atmel: cannot assign IRQ: check that CONFIG_ISA is set in kernel config.");
244 This actually configures the PCMCIA socket -- setting up
245 the I/O windows and the interrupt mapping, and putting the
246 card and host interface into "Memory and IO" mode.
248 ret = pcmcia_request_configuration(link, &link->conf);
252 ((local_info_t*)link->priv)->eth_dev =
253 init_atmel_card(link->irq,
254 link->resource[0]->start,
255 did ? did->driver_info : ATMEL_FW_TYPE_NONE,
259 if (!((local_info_t*)link->priv)->eth_dev)
270 /*======================================================================
272 After a card is removed, atmel_release() will unregister the
273 device, and release the PCMCIA configuration. If the device is
274 still open, this will be postponed until it is closed.
276 ======================================================================*/
278 static void atmel_release(struct pcmcia_device *link)
280 struct net_device *dev = ((local_info_t*)link->priv)->eth_dev;
282 dev_dbg(&link->dev, "atmel_release\n");
285 stop_atmel_card(dev);
286 ((local_info_t*)link->priv)->eth_dev = NULL;
288 pcmcia_disable_device(link);
291 static int atmel_suspend(struct pcmcia_device *link)
293 local_info_t *local = link->priv;
295 netif_device_detach(local->eth_dev);
300 static int atmel_resume(struct pcmcia_device *link)
302 local_info_t *local = link->priv;
304 atmel_open(local->eth_dev);
305 netif_device_attach(local->eth_dev);
310 /*====================================================================*/
311 /* We use the driver_info field to store the correct firmware type for a card. */
313 #define PCMCIA_DEVICE_MANF_CARD_INFO(manf, card, info) { \
314 .match_flags = PCMCIA_DEV_ID_MATCH_MANF_ID| \
315 PCMCIA_DEV_ID_MATCH_CARD_ID, \
318 .driver_info = (kernel_ulong_t)(info), }
320 #define PCMCIA_DEVICE_PROD_ID12_INFO(v1, v2, vh1, vh2, info) { \
321 .match_flags = PCMCIA_DEV_ID_MATCH_PROD_ID1| \
322 PCMCIA_DEV_ID_MATCH_PROD_ID2, \
323 .prod_id = { (v1), (v2), NULL, NULL }, \
324 .prod_id_hash = { (vh1), (vh2), 0, 0 }, \
325 .driver_info = (kernel_ulong_t)(info), }
327 static struct pcmcia_device_id atmel_ids[] = {
328 PCMCIA_DEVICE_MANF_CARD_INFO(0x0101, 0x0620, ATMEL_FW_TYPE_502_3COM),
329 PCMCIA_DEVICE_MANF_CARD_INFO(0x0101, 0x0696, ATMEL_FW_TYPE_502_3COM),
330 PCMCIA_DEVICE_MANF_CARD_INFO(0x01bf, 0x3302, ATMEL_FW_TYPE_502E),
331 PCMCIA_DEVICE_MANF_CARD_INFO(0xd601, 0x0007, ATMEL_FW_TYPE_502),
332 PCMCIA_DEVICE_PROD_ID12_INFO("11WAVE", "11WP611AL-E", 0x9eb2da1f, 0xc9a0d3f9, ATMEL_FW_TYPE_502E),
333 PCMCIA_DEVICE_PROD_ID12_INFO("ATMEL", "AT76C502AR", 0xabda4164, 0x41b37e1f, ATMEL_FW_TYPE_502),
334 PCMCIA_DEVICE_PROD_ID12_INFO("ATMEL", "AT76C502AR_D", 0xabda4164, 0x3675d704, ATMEL_FW_TYPE_502D),
335 PCMCIA_DEVICE_PROD_ID12_INFO("ATMEL", "AT76C502AR_E", 0xabda4164, 0x4172e792, ATMEL_FW_TYPE_502E),
336 PCMCIA_DEVICE_PROD_ID12_INFO("ATMEL", "AT76C504_R", 0xabda4164, 0x917f3d72, ATMEL_FW_TYPE_504_2958),
337 PCMCIA_DEVICE_PROD_ID12_INFO("ATMEL", "AT76C504", 0xabda4164, 0x5040670a, ATMEL_FW_TYPE_504),
338 PCMCIA_DEVICE_PROD_ID12_INFO("ATMEL", "AT76C504A", 0xabda4164, 0xe15ed87f, ATMEL_FW_TYPE_504A_2958),
339 PCMCIA_DEVICE_PROD_ID12_INFO("BT", "Voyager 1020 Laptop Adapter", 0xae49b86a, 0x1e957cd5, ATMEL_FW_TYPE_502),
340 PCMCIA_DEVICE_PROD_ID12_INFO("CNet", "CNWLC 11Mbps Wireless PC Card V-5", 0xbc477dde, 0x502fae6b, ATMEL_FW_TYPE_502E),
341 PCMCIA_DEVICE_PROD_ID12_INFO("IEEE 802.11b", "Wireless LAN PC Card", 0x5b878724, 0x122f1df6, ATMEL_FW_TYPE_502),
342 PCMCIA_DEVICE_PROD_ID12_INFO("IEEE 802.11b", "Wireless LAN Card S", 0x5b878724, 0x5fba533a, ATMEL_FW_TYPE_504_2958),
343 PCMCIA_DEVICE_PROD_ID12_INFO("OEM", "11Mbps Wireless LAN PC Card V-3", 0xfea54c90, 0x1c5b0f68, ATMEL_FW_TYPE_502),
344 PCMCIA_DEVICE_PROD_ID12_INFO("SMC", "2632W", 0xc4f8b18b, 0x30f38774, ATMEL_FW_TYPE_502D),
345 PCMCIA_DEVICE_PROD_ID12_INFO("SMC", "2632W-V2", 0xc4f8b18b, 0x172d1377, ATMEL_FW_TYPE_502),
346 PCMCIA_DEVICE_PROD_ID12_INFO("Wireless", "PC_CARD", 0xa407ecdd, 0x119f6314, ATMEL_FW_TYPE_502D),
347 PCMCIA_DEVICE_PROD_ID12_INFO("WLAN", "802.11b PC CARD", 0x575c516c, 0xb1f6dbc4, ATMEL_FW_TYPE_502D),
348 PCMCIA_DEVICE_PROD_ID12_INFO("LG", "LW2100N", 0xb474d43a, 0x6b1fec94, ATMEL_FW_TYPE_502E),
352 MODULE_DEVICE_TABLE(pcmcia, atmel_ids);
354 static struct pcmcia_driver atmel_driver = {
355 .owner = THIS_MODULE,
359 .probe = atmel_probe,
360 .remove = atmel_detach,
361 .id_table = atmel_ids,
362 .suspend = atmel_suspend,
363 .resume = atmel_resume,
366 static int atmel_cs_init(void)
368 return pcmcia_register_driver(&atmel_driver);
371 static void atmel_cs_cleanup(void)
373 pcmcia_unregister_driver(&atmel_driver);
377 This program is free software; you can redistribute it and/or
378 modify it under the terms of the GNU General Public License
379 as published by the Free Software Foundation; either version 2
380 of the License, or (at your option) any later version.
382 This program is distributed in the hope that it will be useful,
383 but WITHOUT ANY WARRANTY; without even the implied warranty of
384 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
385 GNU General Public License for more details.
389 Redistribution and use in source and binary forms, with or without
390 modification, are permitted provided that the following conditions
393 1. Redistributions of source code must retain the above copyright
394 notice, this list of conditions and the following disclaimer.
395 2. Redistributions in binary form must reproduce the above copyright
396 notice, this list of conditions and the following disclaimer in the
397 documentation and/or other materials provided with the distribution.
398 3. The name of the author may not be used to endorse or promote
399 products derived from this software without specific prior written
402 THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
403 IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
404 WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
405 ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT,
406 INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
407 (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
408 SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
409 HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
410 STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING
411 IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
412 POSSIBILITY OF SUCH DAMAGE.
415 module_init(atmel_cs_init);
416 module_exit(atmel_cs_cleanup);