2 * Driver for 802.11b cards using RAM-loadable Symbol firmware, such as
3 * Symbol Wireless Networker LA4137, CompactFlash cards by Socket
4 * Communications and Intel PRO/Wireless 2011B.
6 * The driver implements Symbol firmware download. The rest is handled
7 * in hermes.c and orinoco.c.
9 * Utilities for downloading the Symbol firmware are available at
10 * http://sourceforge.net/projects/orinoco/
12 * Copyright (C) 2002-2005 Pavel Roskin <proski@gnu.org>
13 * Portions based on orinoco_cs.c:
14 * Copyright (C) David Gibson, Linuxcare Australia
15 * Portions based on Spectrum24tDnld.c from original spectrum24 driver:
16 * Copyright (C) Symbol Technologies.
18 * See copyright notice in file orinoco.c.
21 #define DRIVER_NAME "spectrum_cs"
22 #define PFX DRIVER_NAME ": "
24 #include <linux/module.h>
25 #include <linux/kernel.h>
26 #include <linux/init.h>
27 #include <linux/delay.h>
28 #include <pcmcia/cs_types.h>
29 #include <pcmcia/cs.h>
30 #include <pcmcia/cistpl.h>
31 #include <pcmcia/cisreg.h>
32 #include <pcmcia/ds.h>
36 /********************************************************************/
38 /********************************************************************/
40 MODULE_AUTHOR("Pavel Roskin <proski@gnu.org>");
41 MODULE_DESCRIPTION("Driver for Symbol Spectrum24 Trilogy cards with firmware downloader");
42 MODULE_LICENSE("Dual MPL/GPL");
44 /* Module parameters */
46 /* Some D-Link cards have buggy CIS. They do work at 5v properly, but
47 * don't have any CIS entry for it. This workaround it... */
48 static int ignore_cis_vcc; /* = 0 */
49 module_param(ignore_cis_vcc, int, 0);
50 MODULE_PARM_DESC(ignore_cis_vcc, "Allow voltage mismatch between card and socket");
52 /********************************************************************/
54 /********************************************************************/
56 /* PCMCIA specific device information (goes in the card field of
57 * struct orinoco_private */
58 struct orinoco_pccard {
59 struct pcmcia_device *p_dev;
63 /********************************************************************/
64 /* Function prototypes */
65 /********************************************************************/
67 static int spectrum_cs_config(struct pcmcia_device *link);
68 static void spectrum_cs_release(struct pcmcia_device *link);
70 /* Constants for the CISREG_CCSR register */
71 #define HCR_RUN 0x07 /* run firmware after reset */
72 #define HCR_IDLE 0x0E /* don't run firmware after reset */
73 #define HCR_MEM16 0x10 /* memory width bit, should be preserved */
76 #define CS_CHECK(fn, ret) \
77 do { last_fn = (fn); if ((last_ret = (ret)) != 0) goto cs_failed; } while (0)
80 * Reset the card using configuration registers COR and CCSR.
81 * If IDLE is 1, stop the firmware, so that it can be safely rewritten.
84 spectrum_reset(struct pcmcia_device *link, int idle)
86 int last_ret, last_fn;
90 /* Doing it if hardware is gone is guaranteed crash */
91 if (!pcmcia_dev_present(link))
94 /* Save original COR value */
97 reg.Offset = CISREG_COR;
98 CS_CHECK(AccessConfigurationRegister,
99 pcmcia_access_configuration_register(link, ®));
100 save_cor = reg.Value;
102 /* Soft-Reset card */
103 reg.Action = CS_WRITE;
104 reg.Offset = CISREG_COR;
105 reg.Value = (save_cor | COR_SOFT_RESET);
106 CS_CHECK(AccessConfigurationRegister,
107 pcmcia_access_configuration_register(link, ®));
111 reg.Action = CS_READ;
112 reg.Offset = CISREG_CCSR;
113 CS_CHECK(AccessConfigurationRegister,
114 pcmcia_access_configuration_register(link, ®));
117 * Start or stop the firmware. Memory width bit should be
118 * preserved from the value we've just read.
120 reg.Action = CS_WRITE;
121 reg.Offset = CISREG_CCSR;
122 reg.Value = (idle ? HCR_IDLE : HCR_RUN) | (reg.Value & HCR_MEM16);
123 CS_CHECK(AccessConfigurationRegister,
124 pcmcia_access_configuration_register(link, ®));
127 /* Restore original COR configuration index */
128 reg.Action = CS_WRITE;
129 reg.Offset = CISREG_COR;
130 reg.Value = (save_cor & ~COR_SOFT_RESET);
131 CS_CHECK(AccessConfigurationRegister,
132 pcmcia_access_configuration_register(link, ®));
137 cs_error(link, last_fn, last_ret);
141 /********************************************************************/
143 /********************************************************************/
146 spectrum_cs_hard_reset(struct orinoco_private *priv)
148 struct orinoco_pccard *card = priv->card;
149 struct pcmcia_device *link = card->p_dev;
151 /* Soft reset using COR and HCR */
152 spectrum_reset(link, 0);
158 spectrum_cs_stop_firmware(struct orinoco_private *priv, int idle)
160 struct orinoco_pccard *card = priv->card;
161 struct pcmcia_device *link = card->p_dev;
163 return spectrum_reset(link, idle);
166 /********************************************************************/
168 /********************************************************************/
171 * This creates an "instance" of the driver, allocating local data
172 * structures for one device. The device is registered with Card
175 * The dev_link structure is initialized, but we don't actually
176 * configure the card at this point -- we wait until we receive a card
177 * insertion event. */
179 spectrum_cs_probe(struct pcmcia_device *link)
181 struct net_device *dev;
182 struct orinoco_private *priv;
183 struct orinoco_pccard *card;
185 dev = alloc_orinocodev(sizeof(*card), &handle_to_dev(link),
186 spectrum_cs_hard_reset,
187 spectrum_cs_stop_firmware);
190 priv = netdev_priv(dev);
193 /* Link both structures together */
197 /* Interrupt setup */
198 link->irq.Attributes = IRQ_TYPE_DYNAMIC_SHARING | IRQ_HANDLE_PRESENT;
199 link->irq.IRQInfo1 = IRQ_LEVEL_ID;
200 link->irq.Handler = orinoco_interrupt;
201 link->irq.Instance = dev;
203 /* General socket configuration defaults can go here. In this
204 * client, we assume very little, and rely on the CIS for
205 * almost everything. In most clients, many details (i.e.,
206 * number, sizes, and attributes of IO windows) are fixed by
207 * the nature of the device, and can be hard-wired here. */
208 link->conf.Attributes = 0;
209 link->conf.IntType = INT_MEMORY_AND_IO;
211 return spectrum_cs_config(link);
212 } /* spectrum_cs_attach */
215 * This deletes a driver "instance". The device is de-registered with
216 * Card Services. If it has been released, all local data structures
217 * are freed. Otherwise, the structures will be freed when the device
220 static void spectrum_cs_detach(struct pcmcia_device *link)
222 struct net_device *dev = link->priv;
225 unregister_netdev(dev);
227 spectrum_cs_release(link);
229 free_orinocodev(dev);
230 } /* spectrum_cs_detach */
233 * spectrum_cs_config() is scheduled to run after a CARD_INSERTION
234 * event is received, to configure the PCMCIA socket, and to make the
235 * device available to the system.
238 static int spectrum_cs_config_check(struct pcmcia_device *p_dev,
239 cistpl_cftable_entry_t *cfg,
240 cistpl_cftable_entry_t *dflt,
247 /* Use power settings for Vcc and Vpp if present */
248 /* Note that the CIS values need to be rescaled */
249 if (cfg->vcc.present & (1 << CISTPL_POWER_VNOM)) {
250 if (vcc != cfg->vcc.param[CISTPL_POWER_VNOM] / 10000) {
251 DEBUG(2, "spectrum_cs_config: Vcc mismatch (vcc = %d, CIS = %d)\n", vcc, cfg->vcc.param[CISTPL_POWER_VNOM] / 10000);
255 } else if (dflt->vcc.present & (1 << CISTPL_POWER_VNOM)) {
256 if (vcc != dflt->vcc.param[CISTPL_POWER_VNOM] / 10000) {
257 DEBUG(2, "spectrum_cs_config: Vcc mismatch (vcc = %d, CIS = %d)\n", vcc, dflt->vcc.param[CISTPL_POWER_VNOM] / 10000);
263 if (cfg->vpp1.present & (1 << CISTPL_POWER_VNOM))
265 cfg->vpp1.param[CISTPL_POWER_VNOM] / 10000;
266 else if (dflt->vpp1.present & (1 << CISTPL_POWER_VNOM))
268 dflt->vpp1.param[CISTPL_POWER_VNOM] / 10000;
270 /* Do we need to allocate an interrupt? */
271 p_dev->conf.Attributes |= CONF_ENABLE_IRQ;
273 /* IO window settings */
274 p_dev->io.NumPorts1 = p_dev->io.NumPorts2 = 0;
275 if ((cfg->io.nwin > 0) || (dflt->io.nwin > 0)) {
276 cistpl_io_t *io = (cfg->io.nwin) ? &cfg->io : &dflt->io;
277 p_dev->io.Attributes1 = IO_DATA_PATH_WIDTH_AUTO;
278 if (!(io->flags & CISTPL_IO_8BIT))
279 p_dev->io.Attributes1 = IO_DATA_PATH_WIDTH_16;
280 if (!(io->flags & CISTPL_IO_16BIT))
281 p_dev->io.Attributes1 = IO_DATA_PATH_WIDTH_8;
282 p_dev->io.IOAddrLines = io->flags & CISTPL_IO_LINES_MASK;
283 p_dev->io.BasePort1 = io->win[0].base;
284 p_dev->io.NumPorts1 = io->win[0].len;
286 p_dev->io.Attributes2 = p_dev->io.Attributes1;
287 p_dev->io.BasePort2 = io->win[1].base;
288 p_dev->io.NumPorts2 = io->win[1].len;
291 /* This reserves IO space but doesn't actually enable it */
292 if (pcmcia_request_io(p_dev, &p_dev->io) != 0)
298 pcmcia_disable_device(p_dev);
303 spectrum_cs_config(struct pcmcia_device *link)
305 struct net_device *dev = link->priv;
306 struct orinoco_private *priv = netdev_priv(dev);
307 struct orinoco_pccard *card = priv->card;
308 hermes_t *hw = &priv->hw;
309 int last_fn, last_ret;
313 * In this loop, we scan the CIS for configuration table
314 * entries, each of which describes a valid card
315 * configuration, including voltage, IO window, memory window,
316 * and interrupt settings.
318 * We make no assumptions about the card to be configured: we
319 * use just the information available in the CIS. In an ideal
320 * world, this would work for any PCMCIA card, but it requires
321 * a complete and accurate CIS. In practice, a driver usually
322 * "knows" most of these things without consulting the CIS,
323 * and most client drivers will only use the CIS to fill in
324 * implementation-defined details.
326 last_ret = pcmcia_loop_config(link, spectrum_cs_config_check, NULL);
329 printk(KERN_ERR PFX "GetNextTuple(): No matching "
330 "CIS configuration. Maybe you need the "
331 "ignore_cis_vcc=1 parameter.\n");
332 cs_error(link, RequestIO, last_ret);
337 * Allocate an interrupt line. Note that this does not assign
338 * a handler to the interrupt, unless the 'Handler' member of
339 * the irq structure is initialized.
341 CS_CHECK(RequestIRQ, pcmcia_request_irq(link, &link->irq));
343 /* We initialize the hermes structure before completing PCMCIA
344 * configuration just in case the interrupt handler gets
346 mem = ioport_map(link->io.BasePort1, link->io.NumPorts1);
350 hermes_struct_init(hw, mem, HERMES_16BIT_REGSPACING);
353 * This actually configures the PCMCIA socket -- setting up
354 * the I/O windows and the interrupt mapping, and putting the
355 * card and host interface into "Memory and IO" mode.
357 CS_CHECK(RequestConfiguration,
358 pcmcia_request_configuration(link, &link->conf));
360 /* Ok, we have the configuration, prepare to register the netdev */
361 dev->base_addr = link->io.BasePort1;
362 dev->irq = link->irq.AssignedIRQ;
363 card->node.major = card->node.minor = 0;
366 if (spectrum_cs_hard_reset(priv) != 0) {
370 SET_NETDEV_DEV(dev, &handle_to_dev(link));
371 /* Tell the stack we exist */
372 if (register_netdev(dev) != 0) {
373 printk(KERN_ERR PFX "register_netdev() failed\n");
377 /* At this point, the dev_node_t structure(s) needs to be
378 * initialized and arranged in a linked list at link->dev_node. */
379 strcpy(card->node.dev_name, dev->name);
380 link->dev_node = &card->node; /* link->dev_node being non-NULL is also
381 used to indicate that the
382 net_device has been registered */
384 /* Finally, report what we've done */
385 printk(KERN_DEBUG "%s: " DRIVER_NAME " at %s, irq %d, io "
386 "0x%04x-0x%04x\n", dev->name, dev->dev.parent->bus_id,
387 link->irq.AssignedIRQ, link->io.BasePort1,
388 link->io.BasePort1 + link->io.NumPorts1 - 1);
393 cs_error(link, last_fn, last_ret);
396 spectrum_cs_release(link);
398 } /* spectrum_cs_config */
401 * After a card is removed, spectrum_cs_release() will unregister the
402 * device, and release the PCMCIA configuration. If the device is
403 * still open, this will be postponed until it is closed.
406 spectrum_cs_release(struct pcmcia_device *link)
408 struct net_device *dev = link->priv;
409 struct orinoco_private *priv = netdev_priv(dev);
412 /* We're committed to taking the device away now, so mark the
413 * hardware as unavailable */
414 spin_lock_irqsave(&priv->lock, flags);
415 priv->hw_unavailable++;
416 spin_unlock_irqrestore(&priv->lock, flags);
418 pcmcia_disable_device(link);
420 ioport_unmap(priv->hw.iobase);
421 } /* spectrum_cs_release */
425 spectrum_cs_suspend(struct pcmcia_device *link)
427 struct net_device *dev = link->priv;
428 struct orinoco_private *priv = netdev_priv(dev);
431 /* Mark the device as stopped, to block IO until later */
432 spin_lock(&priv->lock);
434 err = __orinoco_down(dev);
436 printk(KERN_WARNING "%s: Error %d downing interface\n",
439 netif_device_detach(dev);
440 priv->hw_unavailable++;
442 spin_unlock(&priv->lock);
448 spectrum_cs_resume(struct pcmcia_device *link)
450 struct net_device *dev = link->priv;
451 struct orinoco_private *priv = netdev_priv(dev);
453 netif_device_attach(dev);
454 priv->hw_unavailable--;
455 schedule_work(&priv->reset_work);
461 /********************************************************************/
462 /* Module initialization */
463 /********************************************************************/
465 /* Can't be declared "const" or the whole __initdata section will
467 static char version[] __initdata = DRIVER_NAME " " DRIVER_VERSION
468 " (Pavel Roskin <proski@gnu.org>,"
469 " David Gibson <hermes@gibson.dropbear.id.au>, et al)";
471 static struct pcmcia_device_id spectrum_cs_ids[] = {
472 PCMCIA_DEVICE_MANF_CARD(0x026c, 0x0001), /* Symbol Spectrum24 LA4137 */
473 PCMCIA_DEVICE_MANF_CARD(0x0104, 0x0001), /* Socket Communications CF */
474 PCMCIA_DEVICE_PROD_ID12("Intel", "PRO/Wireless LAN PC Card", 0x816cc815, 0x6fbf459a), /* 2011B, not 2011 */
477 MODULE_DEVICE_TABLE(pcmcia, spectrum_cs_ids);
479 static struct pcmcia_driver orinoco_driver = {
480 .owner = THIS_MODULE,
484 .probe = spectrum_cs_probe,
485 .remove = spectrum_cs_detach,
486 .suspend = spectrum_cs_suspend,
487 .resume = spectrum_cs_resume,
488 .id_table = spectrum_cs_ids,
492 init_spectrum_cs(void)
494 printk(KERN_DEBUG "%s\n", version);
496 return pcmcia_register_driver(&orinoco_driver);
500 exit_spectrum_cs(void)
502 pcmcia_unregister_driver(&orinoco_driver);
505 module_init(init_spectrum_cs);
506 module_exit(exit_spectrum_cs);