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 main.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 main.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.h>
29 #include <pcmcia/cistpl.h>
30 #include <pcmcia/cisreg.h>
31 #include <pcmcia/ds.h>
35 /********************************************************************/
37 /********************************************************************/
39 MODULE_AUTHOR("Pavel Roskin <proski@gnu.org>");
40 MODULE_DESCRIPTION("Driver for Symbol Spectrum24 Trilogy cards with firmware downloader");
41 MODULE_LICENSE("Dual MPL/GPL");
43 /* Module parameters */
45 /* Some D-Link cards have buggy CIS. They do work at 5v properly, but
46 * don't have any CIS entry for it. This workaround it... */
47 static int ignore_cis_vcc; /* = 0 */
48 module_param(ignore_cis_vcc, int, 0);
49 MODULE_PARM_DESC(ignore_cis_vcc, "Allow voltage mismatch between card and socket");
51 /********************************************************************/
53 /********************************************************************/
55 /* PCMCIA specific device information (goes in the card field of
56 * struct orinoco_private */
57 struct orinoco_pccard {
58 struct pcmcia_device *p_dev;
61 /********************************************************************/
62 /* Function prototypes */
63 /********************************************************************/
65 static int spectrum_cs_config(struct pcmcia_device *link);
66 static void spectrum_cs_release(struct pcmcia_device *link);
68 /* Constants for the CISREG_CCSR register */
69 #define HCR_RUN 0x07 /* run firmware after reset */
70 #define HCR_IDLE 0x0E /* don't run firmware after reset */
71 #define HCR_MEM16 0x10 /* memory width bit, should be preserved */
75 * Reset the card using configuration registers COR and CCSR.
76 * If IDLE is 1, stop the firmware, so that it can be safely rewritten.
79 spectrum_reset(struct pcmcia_device *link, int idle)
85 /* Doing it if hardware is gone is guaranteed crash */
86 if (!pcmcia_dev_present(link))
89 /* Save original COR value */
90 ret = pcmcia_read_config_byte(link, CISREG_COR, &save_cor);
95 ret = pcmcia_write_config_byte(link, CISREG_COR,
96 (save_cor | COR_SOFT_RESET));
102 ret = pcmcia_read_config_byte(link, CISREG_CCSR, &ccsr);
107 * Start or stop the firmware. Memory width bit should be
108 * preserved from the value we've just read.
110 ccsr = (idle ? HCR_IDLE : HCR_RUN) | (ccsr & HCR_MEM16);
111 ret = pcmcia_write_config_byte(link, CISREG_CCSR, ccsr);
116 /* Restore original COR configuration index */
117 ret = pcmcia_write_config_byte(link, CISREG_COR,
118 (save_cor & ~COR_SOFT_RESET));
128 /********************************************************************/
130 /********************************************************************/
133 spectrum_cs_hard_reset(struct orinoco_private *priv)
135 struct orinoco_pccard *card = priv->card;
136 struct pcmcia_device *link = card->p_dev;
138 /* Soft reset using COR and HCR */
139 spectrum_reset(link, 0);
145 spectrum_cs_stop_firmware(struct orinoco_private *priv, int idle)
147 struct orinoco_pccard *card = priv->card;
148 struct pcmcia_device *link = card->p_dev;
150 return spectrum_reset(link, idle);
153 /********************************************************************/
155 /********************************************************************/
158 * This creates an "instance" of the driver, allocating local data
159 * structures for one device. The device is registered with Card
162 * The dev_link structure is initialized, but we don't actually
163 * configure the card at this point -- we wait until we receive a card
164 * insertion event. */
166 spectrum_cs_probe(struct pcmcia_device *link)
168 struct orinoco_private *priv;
169 struct orinoco_pccard *card;
171 priv = alloc_orinocodev(sizeof(*card), &link->dev,
172 spectrum_cs_hard_reset,
173 spectrum_cs_stop_firmware);
178 /* Link both structures together */
182 /* General socket configuration defaults can go here. In this
183 * client, we assume very little, and rely on the CIS for
184 * almost everything. In most clients, many details (i.e.,
185 * number, sizes, and attributes of IO windows) are fixed by
186 * the nature of the device, and can be hard-wired here. */
187 link->conf.Attributes = 0;
188 link->conf.IntType = INT_MEMORY_AND_IO;
190 return spectrum_cs_config(link);
191 } /* spectrum_cs_attach */
194 * This deletes a driver "instance". The device is de-registered with
195 * Card Services. If it has been released, all local data structures
196 * are freed. Otherwise, the structures will be freed when the device
199 static void spectrum_cs_detach(struct pcmcia_device *link)
201 struct orinoco_private *priv = link->priv;
203 orinoco_if_del(priv);
205 spectrum_cs_release(link);
207 free_orinocodev(priv);
208 } /* spectrum_cs_detach */
211 * spectrum_cs_config() is scheduled to run after a CARD_INSERTION
212 * event is received, to configure the PCMCIA socket, and to make the
213 * device available to the system.
216 static int spectrum_cs_config_check(struct pcmcia_device *p_dev,
217 cistpl_cftable_entry_t *cfg,
218 cistpl_cftable_entry_t *dflt,
225 /* Use power settings for Vcc and Vpp if present */
226 /* Note that the CIS values need to be rescaled */
227 if (cfg->vcc.present & (1 << CISTPL_POWER_VNOM)) {
228 if (vcc != cfg->vcc.param[CISTPL_POWER_VNOM] / 10000) {
229 DEBUG(2, "%s: Vcc mismatch (vcc = %d, CIS = %d)\n",
231 cfg->vcc.param[CISTPL_POWER_VNOM] / 10000);
235 } else if (dflt->vcc.present & (1 << CISTPL_POWER_VNOM)) {
236 if (vcc != dflt->vcc.param[CISTPL_POWER_VNOM] / 10000) {
237 DEBUG(2, "%s: Vcc mismatch (vcc = %d, CIS = %d)\n",
239 dflt->vcc.param[CISTPL_POWER_VNOM] / 10000);
245 if (cfg->vpp1.present & (1 << CISTPL_POWER_VNOM))
247 cfg->vpp1.param[CISTPL_POWER_VNOM] / 10000;
248 else if (dflt->vpp1.present & (1 << CISTPL_POWER_VNOM))
250 dflt->vpp1.param[CISTPL_POWER_VNOM] / 10000;
252 /* Do we need to allocate an interrupt? */
253 p_dev->conf.Attributes |= CONF_ENABLE_IRQ;
255 /* IO window settings */
256 p_dev->io.NumPorts1 = p_dev->io.NumPorts2 = 0;
257 if ((cfg->io.nwin > 0) || (dflt->io.nwin > 0)) {
258 cistpl_io_t *io = (cfg->io.nwin) ? &cfg->io : &dflt->io;
259 p_dev->io.Attributes1 = IO_DATA_PATH_WIDTH_AUTO;
260 if (!(io->flags & CISTPL_IO_8BIT))
261 p_dev->io.Attributes1 = IO_DATA_PATH_WIDTH_16;
262 if (!(io->flags & CISTPL_IO_16BIT))
263 p_dev->io.Attributes1 = IO_DATA_PATH_WIDTH_8;
264 p_dev->io.IOAddrLines = io->flags & CISTPL_IO_LINES_MASK;
265 p_dev->io.BasePort1 = io->win[0].base;
266 p_dev->io.NumPorts1 = io->win[0].len;
268 p_dev->io.Attributes2 = p_dev->io.Attributes1;
269 p_dev->io.BasePort2 = io->win[1].base;
270 p_dev->io.NumPorts2 = io->win[1].len;
273 /* This reserves IO space but doesn't actually enable it */
274 if (pcmcia_request_io(p_dev, &p_dev->io) != 0)
280 pcmcia_disable_device(p_dev);
285 spectrum_cs_config(struct pcmcia_device *link)
287 struct orinoco_private *priv = link->priv;
288 hermes_t *hw = &priv->hw;
293 * In this loop, we scan the CIS for configuration table
294 * entries, each of which describes a valid card
295 * configuration, including voltage, IO window, memory window,
296 * and interrupt settings.
298 * We make no assumptions about the card to be configured: we
299 * use just the information available in the CIS. In an ideal
300 * world, this would work for any PCMCIA card, but it requires
301 * a complete and accurate CIS. In practice, a driver usually
302 * "knows" most of these things without consulting the CIS,
303 * and most client drivers will only use the CIS to fill in
304 * implementation-defined details.
306 ret = pcmcia_loop_config(link, spectrum_cs_config_check, NULL);
309 printk(KERN_ERR PFX "GetNextTuple(): No matching "
310 "CIS configuration. Maybe you need the "
311 "ignore_cis_vcc=1 parameter.\n");
315 ret = pcmcia_request_irq(link, orinoco_interrupt);
319 /* We initialize the hermes structure before completing PCMCIA
320 * configuration just in case the interrupt handler gets
322 mem = ioport_map(link->io.BasePort1, link->io.NumPorts1);
326 hermes_struct_init(hw, mem, HERMES_16BIT_REGSPACING);
327 hw->eeprom_pda = true;
330 * This actually configures the PCMCIA socket -- setting up
331 * the I/O windows and the interrupt mapping, and putting the
332 * card and host interface into "Memory and IO" mode.
334 ret = pcmcia_request_configuration(link, &link->conf);
339 if (spectrum_cs_hard_reset(priv) != 0)
342 /* Initialise the main driver */
343 if (orinoco_init(priv) != 0) {
344 printk(KERN_ERR PFX "orinoco_init() failed\n");
348 /* Register an interface with the stack */
349 if (orinoco_if_add(priv, link->io.BasePort1,
350 link->irq, NULL) != 0) {
351 printk(KERN_ERR PFX "orinoco_if_add() failed\n");
358 spectrum_cs_release(link);
360 } /* spectrum_cs_config */
363 * After a card is removed, spectrum_cs_release() will unregister the
364 * device, and release the PCMCIA configuration. If the device is
365 * still open, this will be postponed until it is closed.
368 spectrum_cs_release(struct pcmcia_device *link)
370 struct orinoco_private *priv = link->priv;
373 /* We're committed to taking the device away now, so mark the
374 * hardware as unavailable */
375 priv->hw.ops->lock_irqsave(&priv->lock, &flags);
376 priv->hw_unavailable++;
377 priv->hw.ops->unlock_irqrestore(&priv->lock, &flags);
379 pcmcia_disable_device(link);
381 ioport_unmap(priv->hw.iobase);
382 } /* spectrum_cs_release */
386 spectrum_cs_suspend(struct pcmcia_device *link)
388 struct orinoco_private *priv = link->priv;
391 /* Mark the device as stopped, to block IO until later */
398 spectrum_cs_resume(struct pcmcia_device *link)
400 struct orinoco_private *priv = link->priv;
401 int err = orinoco_up(priv);
407 /********************************************************************/
408 /* Module initialization */
409 /********************************************************************/
411 /* Can't be declared "const" or the whole __initdata section will
413 static char version[] __initdata = DRIVER_NAME " " DRIVER_VERSION
414 " (Pavel Roskin <proski@gnu.org>,"
415 " David Gibson <hermes@gibson.dropbear.id.au>, et al)";
417 static struct pcmcia_device_id spectrum_cs_ids[] = {
418 PCMCIA_DEVICE_MANF_CARD(0x026c, 0x0001), /* Symbol Spectrum24 LA4137 */
419 PCMCIA_DEVICE_MANF_CARD(0x0104, 0x0001), /* Socket Communications CF */
420 PCMCIA_DEVICE_PROD_ID12("Intel", "PRO/Wireless LAN PC Card", 0x816cc815, 0x6fbf459a), /* 2011B, not 2011 */
423 MODULE_DEVICE_TABLE(pcmcia, spectrum_cs_ids);
425 static struct pcmcia_driver orinoco_driver = {
426 .owner = THIS_MODULE,
430 .probe = spectrum_cs_probe,
431 .remove = spectrum_cs_detach,
432 .suspend = spectrum_cs_suspend,
433 .resume = spectrum_cs_resume,
434 .id_table = spectrum_cs_ids,
438 init_spectrum_cs(void)
440 printk(KERN_DEBUG "%s\n", version);
442 return pcmcia_register_driver(&orinoco_driver);
446 exit_spectrum_cs(void)
448 pcmcia_unregister_driver(&orinoco_driver);
451 module_init(init_spectrum_cs);
452 module_exit(exit_spectrum_cs);