1 /*======================================================================
3 Aironet driver for 4500 and 4800 series cards
5 This code is released under both the GPL version 2 and BSD licenses.
6 Either license may be used. The respective licenses are found at
9 This code was developed by Benjamin Reed <breed@users.sourceforge.net>
10 including portions of which come from the Aironet PC4500
11 Developer's Reference Manual and used with permission. Copyright
12 (C) 1999 Benjamin Reed. All Rights Reserved. Permission to use
13 code in the Developer's manual was granted for this driver by
16 In addition this module was derived from dummy_cs.
17 The initial developer of dummy_cs is David A. Hinds
18 <dahinds@users.sourceforge.net>. Portions created by David A. Hinds
19 are Copyright (C) 1999 David A. Hinds. All Rights Reserved.
21 ======================================================================*/
23 #ifdef __IN_PCMCIA_PACKAGE__
24 #include <pcmcia/k_compat.h>
26 #include <linux/init.h>
27 #include <linux/kernel.h>
28 #include <linux/module.h>
29 #include <linux/ptrace.h>
30 #include <linux/slab.h>
31 #include <linux/string.h>
32 #include <linux/timer.h>
33 #include <linux/netdevice.h>
35 #include <pcmcia/cs_types.h>
36 #include <pcmcia/cs.h>
37 #include <pcmcia/cistpl.h>
38 #include <pcmcia/cisreg.h>
39 #include <pcmcia/ds.h>
42 #include <asm/system.h>
47 /*====================================================================*/
49 MODULE_AUTHOR("Benjamin Reed");
50 MODULE_DESCRIPTION("Support for Cisco/Aironet 802.11 wireless ethernet "
51 "cards. This is the module that links the PCMCIA card "
52 "with the airo module.");
53 MODULE_LICENSE("Dual BSD/GPL");
54 MODULE_SUPPORTED_DEVICE("Aironet 4500, 4800 and Cisco 340 PCMCIA cards");
56 /*====================================================================*/
59 The event() function is this driver's Card Services event handler.
60 It will be called by Card Services when an appropriate card status
61 event is received. The config() and release() entry points are
62 used to configure or release a socket, in response to card
63 insertion and ejection events. They are invoked from the airo_cs
67 static int airo_config(struct pcmcia_device *link);
68 static void airo_release(struct pcmcia_device *link);
71 The attach() and detach() entry points are used to create and destroy
72 "instances" of the driver, where each instance represents everything
73 needed to manage one actual PCMCIA card.
76 static void airo_detach(struct pcmcia_device *p_dev);
79 You'll also need to prototype all the functions that will actually
80 be used to talk to your device. See 'pcmem_cs' for a good example
81 of a fully self-sufficient driver; the other drivers rely more or
82 less on other parts of the kernel.
86 A linked list of "instances" of the aironet device. Each actual
87 PCMCIA card corresponds to one device instance, and is described
88 by one struct pcmcia_device structure (defined in ds.h).
90 You may not want to use a linked list for this -- for example, the
91 memory card driver uses an array of struct pcmcia_device pointers,
92 where minor device numbers are used to derive the corresponding
97 A driver needs to provide a dev_node_t structure for each device
98 on a card. In some cases, there is only one device per card (for
99 example, ethernet cards, modems). In other cases, there may be
100 many actual or logical devices (SCSI adapters, memory cards with
101 multiple partitions). The dev_node_t structures need to be kept
102 in a linked list starting at the 'dev' field of a struct pcmcia_device
103 structure. We allocate them in the card's private data structure,
104 because they generally shouldn't be allocated dynamically.
106 In this case, we also provide a flag to indicate if a device is
107 "stopped" due to a power management event, or card ejection. The
108 device IO routines can use a flag like this to throttle IO to a
109 card that is not ready to accept it.
112 typedef struct local_info_t {
114 struct net_device *eth_dev;
117 /*======================================================================
119 airo_attach() creates an "instance" of the driver, allocating
120 local data structures for one device. The device is registered
123 The dev_link structure is initialized, but we don't actually
124 configure the card at this point -- we wait until we receive a
125 card insertion event.
127 ======================================================================*/
129 static int airo_probe(struct pcmcia_device *p_dev)
133 dev_dbg(&p_dev->dev, "airo_attach()\n");
136 General socket configuration defaults can go here. In this
137 client, we assume very little, and rely on the CIS for almost
138 everything. In most clients, many details (i.e., number, sizes,
139 and attributes of IO windows) are fixed by the nature of the
140 device, and can be hard-wired here.
142 p_dev->conf.Attributes = 0;
143 p_dev->conf.IntType = INT_MEMORY_AND_IO;
145 /* Allocate space for private device-specific data */
146 local = kzalloc(sizeof(local_info_t), GFP_KERNEL);
148 printk(KERN_ERR "airo_cs: no memory for new device\n");
153 return airo_config(p_dev);
156 /*======================================================================
158 This deletes a driver "instance". The device is de-registered
159 with Card Services. If it has been released, all local data
160 structures are freed. Otherwise, the structures will be freed
161 when the device is released.
163 ======================================================================*/
165 static void airo_detach(struct pcmcia_device *link)
167 dev_dbg(&link->dev, "airo_detach\n");
171 if (((local_info_t *)link->priv)->eth_dev) {
172 stop_airo_card(((local_info_t *)link->priv)->eth_dev, 0);
174 ((local_info_t *)link->priv)->eth_dev = NULL;
179 /*======================================================================
181 airo_config() is scheduled to run after a CARD_INSERTION event
182 is received, to configure the PCMCIA socket, and to make the
183 device available to the system.
185 ======================================================================*/
187 static int airo_cs_config_check(struct pcmcia_device *p_dev,
188 cistpl_cftable_entry_t *cfg,
189 cistpl_cftable_entry_t *dflt,
193 win_req_t *req = priv_data;
198 /* Does this card need audio output? */
199 if (cfg->flags & CISTPL_CFTABLE_AUDIO) {
200 p_dev->conf.Attributes |= CONF_ENABLE_SPKR;
201 p_dev->conf.Status = CCSR_AUDIO_ENA;
204 /* Use power settings for Vcc and Vpp if present */
205 /* Note that the CIS values need to be rescaled */
206 if (cfg->vpp1.present & (1<<CISTPL_POWER_VNOM))
207 p_dev->conf.Vpp = cfg->vpp1.param[CISTPL_POWER_VNOM]/10000;
208 else if (dflt->vpp1.present & (1<<CISTPL_POWER_VNOM))
209 p_dev->conf.Vpp = dflt->vpp1.param[CISTPL_POWER_VNOM]/10000;
211 p_dev->conf.Attributes |= CONF_ENABLE_IRQ;
213 /* IO window settings */
214 p_dev->io.NumPorts1 = p_dev->io.NumPorts2 = 0;
215 if ((cfg->io.nwin > 0) || (dflt->io.nwin > 0)) {
216 cistpl_io_t *io = (cfg->io.nwin) ? &cfg->io : &dflt->io;
217 p_dev->io.Attributes1 = IO_DATA_PATH_WIDTH_AUTO;
218 if (!(io->flags & CISTPL_IO_8BIT))
219 p_dev->io.Attributes1 = IO_DATA_PATH_WIDTH_16;
220 if (!(io->flags & CISTPL_IO_16BIT))
221 p_dev->io.Attributes1 = IO_DATA_PATH_WIDTH_8;
222 p_dev->io.BasePort1 = io->win[0].base;
223 p_dev->io.NumPorts1 = io->win[0].len;
225 p_dev->io.Attributes2 = p_dev->io.Attributes1;
226 p_dev->io.BasePort2 = io->win[1].base;
227 p_dev->io.NumPorts2 = io->win[1].len;
231 /* This reserves IO space but doesn't actually enable it */
232 if (pcmcia_request_io(p_dev, &p_dev->io) != 0)
236 Now set up a common memory window, if needed. There is room
237 in the struct pcmcia_device structure for one memory window handle,
238 but if the base addresses need to be saved, or if multiple
239 windows are needed, the info should go in the private data
240 structure for this device.
242 Note that the memory window base is a physical address, and
243 needs to be mapped to virtual space with ioremap() before it
246 if ((cfg->mem.nwin > 0) || (dflt->mem.nwin > 0)) {
247 cistpl_mem_t *mem = (cfg->mem.nwin) ? &cfg->mem : &dflt->mem;
249 req->Attributes = WIN_DATA_WIDTH_16|WIN_MEMORY_TYPE_CM;
250 req->Base = mem->win[0].host_addr;
251 req->Size = mem->win[0].len;
252 req->AccessSpeed = 0;
253 if (pcmcia_request_window(p_dev, req, &p_dev->win) != 0)
256 map.CardOffset = mem->win[0].card_addr;
257 if (pcmcia_map_mem_page(p_dev, p_dev->win, &map) != 0)
260 /* If we got this far, we're cool! */
265 static int airo_config(struct pcmcia_device *link)
273 dev_dbg(&link->dev, "airo_config\n");
275 req = kzalloc(sizeof(win_req_t), GFP_KERNEL);
280 * In this loop, we scan the CIS for configuration table
281 * entries, each of which describes a valid card
282 * configuration, including voltage, IO window, memory window,
283 * and interrupt settings.
285 * We make no assumptions about the card to be configured: we
286 * use just the information available in the CIS. In an ideal
287 * world, this would work for any PCMCIA card, but it requires
288 * a complete and accurate CIS. In practice, a driver usually
289 * "knows" most of these things without consulting the CIS,
290 * and most client drivers will only use the CIS to fill in
291 * implementation-defined details.
293 ret = pcmcia_loop_config(link, airo_cs_config_check, req);
301 This actually configures the PCMCIA socket -- setting up
302 the I/O windows and the interrupt mapping, and putting the
303 card and host interface into "Memory and IO" mode.
305 ret = pcmcia_request_configuration(link, &link->conf);
308 ((local_info_t *)link->priv)->eth_dev =
309 init_airo_card(link->irq,
310 link->io.BasePort1, 1, &link->dev);
311 if (!((local_info_t *)link->priv)->eth_dev)
315 At this point, the dev_node_t structure(s) need to be
316 initialized and arranged in a linked list at link->dev_node.
318 strcpy(dev->node.dev_name, ((local_info_t *)link->priv)->eth_dev->name);
319 dev->node.major = dev->node.minor = 0;
320 link->dev_node = &dev->node;
322 /* Finally, report what we've done */
323 printk(KERN_INFO "%s: index 0x%02x: ",
324 dev->node.dev_name, link->conf.ConfigIndex);
326 printk(", Vpp %d.%d", link->conf.Vpp/10, link->conf.Vpp%10);
327 printk(", irq %d", link->irq);
328 if (link->io.NumPorts1)
329 printk(", io 0x%04x-0x%04x", link->io.BasePort1,
330 link->io.BasePort1+link->io.NumPorts1-1);
331 if (link->io.NumPorts2)
332 printk(" & 0x%04x-0x%04x", link->io.BasePort2,
333 link->io.BasePort2+link->io.NumPorts2-1);
335 printk(", mem 0x%06lx-0x%06lx", req->Base,
336 req->Base+req->Size-1);
347 /*======================================================================
349 After a card is removed, airo_release() will unregister the
350 device, and release the PCMCIA configuration. If the device is
351 still open, this will be postponed until it is closed.
353 ======================================================================*/
355 static void airo_release(struct pcmcia_device *link)
357 dev_dbg(&link->dev, "airo_release\n");
358 pcmcia_disable_device(link);
361 static int airo_suspend(struct pcmcia_device *link)
363 local_info_t *local = link->priv;
365 netif_device_detach(local->eth_dev);
370 static int airo_resume(struct pcmcia_device *link)
372 local_info_t *local = link->priv;
375 reset_airo_card(local->eth_dev);
376 netif_device_attach(local->eth_dev);
382 static struct pcmcia_device_id airo_ids[] = {
383 PCMCIA_DEVICE_MANF_CARD(0x015f, 0x000a),
384 PCMCIA_DEVICE_MANF_CARD(0x015f, 0x0005),
385 PCMCIA_DEVICE_MANF_CARD(0x015f, 0x0007),
386 PCMCIA_DEVICE_MANF_CARD(0x0105, 0x0007),
389 MODULE_DEVICE_TABLE(pcmcia, airo_ids);
391 static struct pcmcia_driver airo_driver = {
392 .owner = THIS_MODULE,
397 .remove = airo_detach,
398 .id_table = airo_ids,
399 .suspend = airo_suspend,
400 .resume = airo_resume,
403 static int airo_cs_init(void)
405 return pcmcia_register_driver(&airo_driver);
408 static void airo_cs_cleanup(void)
410 pcmcia_unregister_driver(&airo_driver);
414 This program is free software; you can redistribute it and/or
415 modify it under the terms of the GNU General Public License
416 as published by the Free Software Foundation; either version 2
417 of the License, or (at your option) any later version.
419 This program is distributed in the hope that it will be useful,
420 but WITHOUT ANY WARRANTY; without even the implied warranty of
421 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
422 GNU General Public License for more details.
426 Redistribution and use in source and binary forms, with or without
427 modification, are permitted provided that the following conditions
430 1. Redistributions of source code must retain the above copyright
431 notice, this list of conditions and the following disclaimer.
432 2. Redistributions in binary form must reproduce the above copyright
433 notice, this list of conditions and the following disclaimer in the
434 documentation and/or other materials provided with the distribution.
435 3. The name of the author may not be used to endorse or promote
436 products derived from this software without specific prior written
439 THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
440 IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
441 WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
442 ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT,
443 INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
444 (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
445 SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
446 HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
447 STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING
448 IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
449 POSSIBILITY OF SUCH DAMAGE.
452 module_init(airo_cs_init);
453 module_exit(airo_cs_cleanup);