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;
118 /* Allocate space for private device-specific data */
119 local = kzalloc(sizeof(local_info_t), GFP_KERNEL);
121 printk(KERN_ERR "atmel_cs: no memory for new device\n");
126 return atmel_config(p_dev);
129 /*======================================================================
131 This deletes a driver "instance". The device is de-registered
132 with Card Services. If it has been released, all local data
133 structures are freed. Otherwise, the structures will be freed
134 when the device is released.
136 ======================================================================*/
138 static void atmel_detach(struct pcmcia_device *link)
140 dev_dbg(&link->dev, "atmel_detach\n");
147 /*======================================================================
149 atmel_config() is scheduled to run after a CARD_INSERTION event
150 is received, to configure the PCMCIA socket, and to make the
151 device available to the system.
153 ======================================================================*/
155 /* Call-back function to interrogate PCMCIA-specific information
156 about the current existance of the card */
157 static int card_present(void *arg)
159 struct pcmcia_device *link = (struct pcmcia_device *)arg;
161 if (pcmcia_dev_present(link))
167 static int atmel_config_check(struct pcmcia_device *p_dev,
168 cistpl_cftable_entry_t *cfg,
169 cistpl_cftable_entry_t *dflt,
176 /* Does this card need audio output? */
177 if (cfg->flags & CISTPL_CFTABLE_AUDIO)
178 p_dev->conf.Attributes |= CONF_ENABLE_SPKR;
180 /* Use power settings for Vcc and Vpp if present */
181 /* Note that the CIS values need to be rescaled */
182 if (cfg->vpp1.present & (1<<CISTPL_POWER_VNOM))
183 p_dev->vpp = cfg->vpp1.param[CISTPL_POWER_VNOM]/10000;
184 else if (dflt->vpp1.present & (1<<CISTPL_POWER_VNOM))
185 p_dev->vpp = dflt->vpp1.param[CISTPL_POWER_VNOM]/10000;
187 p_dev->conf.Attributes |= CONF_ENABLE_IRQ;
189 /* IO window settings */
190 p_dev->resource[0]->end = p_dev->resource[1]->end = 0;
191 if ((cfg->io.nwin > 0) || (dflt->io.nwin > 0)) {
192 cistpl_io_t *io = (cfg->io.nwin) ? &cfg->io : &dflt->io;
193 p_dev->resource[0]->flags &= ~IO_DATA_PATH_WIDTH;
194 p_dev->resource[0]->flags |=
195 pcmcia_io_cfg_data_width(io->flags);
196 p_dev->resource[0]->start = io->win[0].base;
197 p_dev->resource[0]->end = io->win[0].len;
199 p_dev->resource[1]->flags = p_dev->resource[0]->flags;
200 p_dev->resource[1]->start = io->win[1].base;
201 p_dev->resource[1]->end = io->win[1].len;
205 /* This reserves IO space but doesn't actually enable it */
206 return pcmcia_request_io(p_dev);
209 static int atmel_config(struct pcmcia_device *link)
213 struct pcmcia_device_id *did;
216 did = dev_get_drvdata(&link->dev);
218 dev_dbg(&link->dev, "atmel_config\n");
221 In this loop, we scan the CIS for configuration table entries,
222 each of which describes a valid card configuration, including
223 voltage, IO window, memory window, and interrupt settings.
225 We make no assumptions about the card to be configured: we use
226 just the information available in the CIS. In an ideal world,
227 this would work for any PCMCIA card, but it requires a complete
228 and accurate CIS. In practice, a driver usually "knows" most of
229 these things without consulting the CIS, and most client drivers
230 will only use the CIS to fill in implementation-defined details.
232 if (pcmcia_loop_config(link, atmel_config_check, NULL))
236 dev_err(&link->dev, "atmel: cannot assign IRQ: check that CONFIG_ISA is set in kernel config.");
241 This actually configures the PCMCIA socket -- setting up
242 the I/O windows and the interrupt mapping, and putting the
243 card and host interface into "Memory and IO" mode.
245 ret = pcmcia_request_configuration(link, &link->conf);
249 ((local_info_t*)link->priv)->eth_dev =
250 init_atmel_card(link->irq,
251 link->resource[0]->start,
252 did ? did->driver_info : ATMEL_FW_TYPE_NONE,
256 if (!((local_info_t*)link->priv)->eth_dev)
267 /*======================================================================
269 After a card is removed, atmel_release() will unregister the
270 device, and release the PCMCIA configuration. If the device is
271 still open, this will be postponed until it is closed.
273 ======================================================================*/
275 static void atmel_release(struct pcmcia_device *link)
277 struct net_device *dev = ((local_info_t*)link->priv)->eth_dev;
279 dev_dbg(&link->dev, "atmel_release\n");
282 stop_atmel_card(dev);
283 ((local_info_t*)link->priv)->eth_dev = NULL;
285 pcmcia_disable_device(link);
288 static int atmel_suspend(struct pcmcia_device *link)
290 local_info_t *local = link->priv;
292 netif_device_detach(local->eth_dev);
297 static int atmel_resume(struct pcmcia_device *link)
299 local_info_t *local = link->priv;
301 atmel_open(local->eth_dev);
302 netif_device_attach(local->eth_dev);
307 /*====================================================================*/
308 /* We use the driver_info field to store the correct firmware type for a card. */
310 #define PCMCIA_DEVICE_MANF_CARD_INFO(manf, card, info) { \
311 .match_flags = PCMCIA_DEV_ID_MATCH_MANF_ID| \
312 PCMCIA_DEV_ID_MATCH_CARD_ID, \
315 .driver_info = (kernel_ulong_t)(info), }
317 #define PCMCIA_DEVICE_PROD_ID12_INFO(v1, v2, vh1, vh2, info) { \
318 .match_flags = PCMCIA_DEV_ID_MATCH_PROD_ID1| \
319 PCMCIA_DEV_ID_MATCH_PROD_ID2, \
320 .prod_id = { (v1), (v2), NULL, NULL }, \
321 .prod_id_hash = { (vh1), (vh2), 0, 0 }, \
322 .driver_info = (kernel_ulong_t)(info), }
324 static struct pcmcia_device_id atmel_ids[] = {
325 PCMCIA_DEVICE_MANF_CARD_INFO(0x0101, 0x0620, ATMEL_FW_TYPE_502_3COM),
326 PCMCIA_DEVICE_MANF_CARD_INFO(0x0101, 0x0696, ATMEL_FW_TYPE_502_3COM),
327 PCMCIA_DEVICE_MANF_CARD_INFO(0x01bf, 0x3302, ATMEL_FW_TYPE_502E),
328 PCMCIA_DEVICE_MANF_CARD_INFO(0xd601, 0x0007, ATMEL_FW_TYPE_502),
329 PCMCIA_DEVICE_PROD_ID12_INFO("11WAVE", "11WP611AL-E", 0x9eb2da1f, 0xc9a0d3f9, ATMEL_FW_TYPE_502E),
330 PCMCIA_DEVICE_PROD_ID12_INFO("ATMEL", "AT76C502AR", 0xabda4164, 0x41b37e1f, ATMEL_FW_TYPE_502),
331 PCMCIA_DEVICE_PROD_ID12_INFO("ATMEL", "AT76C502AR_D", 0xabda4164, 0x3675d704, ATMEL_FW_TYPE_502D),
332 PCMCIA_DEVICE_PROD_ID12_INFO("ATMEL", "AT76C502AR_E", 0xabda4164, 0x4172e792, ATMEL_FW_TYPE_502E),
333 PCMCIA_DEVICE_PROD_ID12_INFO("ATMEL", "AT76C504_R", 0xabda4164, 0x917f3d72, ATMEL_FW_TYPE_504_2958),
334 PCMCIA_DEVICE_PROD_ID12_INFO("ATMEL", "AT76C504", 0xabda4164, 0x5040670a, ATMEL_FW_TYPE_504),
335 PCMCIA_DEVICE_PROD_ID12_INFO("ATMEL", "AT76C504A", 0xabda4164, 0xe15ed87f, ATMEL_FW_TYPE_504A_2958),
336 PCMCIA_DEVICE_PROD_ID12_INFO("BT", "Voyager 1020 Laptop Adapter", 0xae49b86a, 0x1e957cd5, ATMEL_FW_TYPE_502),
337 PCMCIA_DEVICE_PROD_ID12_INFO("CNet", "CNWLC 11Mbps Wireless PC Card V-5", 0xbc477dde, 0x502fae6b, ATMEL_FW_TYPE_502E),
338 PCMCIA_DEVICE_PROD_ID12_INFO("IEEE 802.11b", "Wireless LAN PC Card", 0x5b878724, 0x122f1df6, ATMEL_FW_TYPE_502),
339 PCMCIA_DEVICE_PROD_ID12_INFO("IEEE 802.11b", "Wireless LAN Card S", 0x5b878724, 0x5fba533a, ATMEL_FW_TYPE_504_2958),
340 PCMCIA_DEVICE_PROD_ID12_INFO("OEM", "11Mbps Wireless LAN PC Card V-3", 0xfea54c90, 0x1c5b0f68, ATMEL_FW_TYPE_502),
341 PCMCIA_DEVICE_PROD_ID12_INFO("SMC", "2632W", 0xc4f8b18b, 0x30f38774, ATMEL_FW_TYPE_502D),
342 PCMCIA_DEVICE_PROD_ID12_INFO("SMC", "2632W-V2", 0xc4f8b18b, 0x172d1377, ATMEL_FW_TYPE_502),
343 PCMCIA_DEVICE_PROD_ID12_INFO("Wireless", "PC_CARD", 0xa407ecdd, 0x119f6314, ATMEL_FW_TYPE_502D),
344 PCMCIA_DEVICE_PROD_ID12_INFO("WLAN", "802.11b PC CARD", 0x575c516c, 0xb1f6dbc4, ATMEL_FW_TYPE_502D),
345 PCMCIA_DEVICE_PROD_ID12_INFO("LG", "LW2100N", 0xb474d43a, 0x6b1fec94, ATMEL_FW_TYPE_502E),
349 MODULE_DEVICE_TABLE(pcmcia, atmel_ids);
351 static struct pcmcia_driver atmel_driver = {
352 .owner = THIS_MODULE,
356 .probe = atmel_probe,
357 .remove = atmel_detach,
358 .id_table = atmel_ids,
359 .suspend = atmel_suspend,
360 .resume = atmel_resume,
363 static int atmel_cs_init(void)
365 return pcmcia_register_driver(&atmel_driver);
368 static void atmel_cs_cleanup(void)
370 pcmcia_unregister_driver(&atmel_driver);
374 This program is free software; you can redistribute it and/or
375 modify it under the terms of the GNU General Public License
376 as published by the Free Software Foundation; either version 2
377 of the License, or (at your option) any later version.
379 This program is distributed in the hope that it will be useful,
380 but WITHOUT ANY WARRANTY; without even the implied warranty of
381 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
382 GNU General Public License for more details.
386 Redistribution and use in source and binary forms, with or without
387 modification, are permitted provided that the following conditions
390 1. Redistributions of source code must retain the above copyright
391 notice, this list of conditions and the following disclaimer.
392 2. Redistributions in binary form must reproduce the above copyright
393 notice, this list of conditions and the following disclaimer in the
394 documentation and/or other materials provided with the distribution.
395 3. The name of the author may not be used to endorse or promote
396 products derived from this software without specific prior written
399 THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
400 IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
401 WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
402 ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT,
403 INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
404 (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
405 SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
406 HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
407 STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING
408 IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
409 POSSIBILITY OF SUCH DAMAGE.
412 module_init(atmel_cs_init);
413 module_exit(atmel_cs_cleanup);