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/cistpl.h>
29 #include <pcmcia/cisreg.h>
30 #include <pcmcia/ds.h>
34 /********************************************************************/
36 /********************************************************************/
38 MODULE_AUTHOR("Pavel Roskin <proski@gnu.org>");
39 MODULE_DESCRIPTION("Driver for Symbol Spectrum24 Trilogy cards with firmware downloader");
40 MODULE_LICENSE("Dual MPL/GPL");
42 /* Module parameters */
44 /* Some D-Link cards have buggy CIS. They do work at 5v properly, but
45 * don't have any CIS entry for it. This workaround it... */
46 static int ignore_cis_vcc; /* = 0 */
47 module_param(ignore_cis_vcc, int, 0);
48 MODULE_PARM_DESC(ignore_cis_vcc, "Allow voltage mismatch between card and socket");
50 /********************************************************************/
52 /********************************************************************/
54 /* PCMCIA specific device information (goes in the card field of
55 * struct orinoco_private */
56 struct orinoco_pccard {
57 struct pcmcia_device *p_dev;
60 /********************************************************************/
61 /* Function prototypes */
62 /********************************************************************/
64 static int spectrum_cs_config(struct pcmcia_device *link);
65 static void spectrum_cs_release(struct pcmcia_device *link);
67 /* Constants for the CISREG_CCSR register */
68 #define HCR_RUN 0x07 /* run firmware after reset */
69 #define HCR_IDLE 0x0E /* don't run firmware after reset */
70 #define HCR_MEM16 0x10 /* memory width bit, should be preserved */
74 * Reset the card using configuration registers COR and CCSR.
75 * If IDLE is 1, stop the firmware, so that it can be safely rewritten.
78 spectrum_reset(struct pcmcia_device *link, int idle)
84 /* Doing it if hardware is gone is guaranteed crash */
85 if (!pcmcia_dev_present(link))
88 /* Save original COR value */
89 ret = pcmcia_read_config_byte(link, CISREG_COR, &save_cor);
94 ret = pcmcia_write_config_byte(link, CISREG_COR,
95 (save_cor | COR_SOFT_RESET));
101 ret = pcmcia_read_config_byte(link, CISREG_CCSR, &ccsr);
106 * Start or stop the firmware. Memory width bit should be
107 * preserved from the value we've just read.
109 ccsr = (idle ? HCR_IDLE : HCR_RUN) | (ccsr & HCR_MEM16);
110 ret = pcmcia_write_config_byte(link, CISREG_CCSR, ccsr);
115 /* Restore original COR configuration index */
116 ret = pcmcia_write_config_byte(link, CISREG_COR,
117 (save_cor & ~COR_SOFT_RESET));
127 /********************************************************************/
129 /********************************************************************/
132 spectrum_cs_hard_reset(struct orinoco_private *priv)
134 struct orinoco_pccard *card = priv->card;
135 struct pcmcia_device *link = card->p_dev;
137 /* Soft reset using COR and HCR */
138 spectrum_reset(link, 0);
144 spectrum_cs_stop_firmware(struct orinoco_private *priv, int idle)
146 struct orinoco_pccard *card = priv->card;
147 struct pcmcia_device *link = card->p_dev;
149 return spectrum_reset(link, idle);
152 /********************************************************************/
154 /********************************************************************/
157 * This creates an "instance" of the driver, allocating local data
158 * structures for one device. The device is registered with Card
161 * The dev_link structure is initialized, but we don't actually
162 * configure the card at this point -- we wait until we receive a card
163 * insertion event. */
165 spectrum_cs_probe(struct pcmcia_device *link)
167 struct orinoco_private *priv;
168 struct orinoco_pccard *card;
170 priv = alloc_orinocodev(sizeof(*card), &link->dev,
171 spectrum_cs_hard_reset,
172 spectrum_cs_stop_firmware);
177 /* Link both structures together */
181 return spectrum_cs_config(link);
182 } /* spectrum_cs_attach */
185 * This deletes a driver "instance". The device is de-registered with
186 * Card Services. If it has been released, all local data structures
187 * are freed. Otherwise, the structures will be freed when the device
190 static void spectrum_cs_detach(struct pcmcia_device *link)
192 struct orinoco_private *priv = link->priv;
194 orinoco_if_del(priv);
196 spectrum_cs_release(link);
198 free_orinocodev(priv);
199 } /* spectrum_cs_detach */
202 * spectrum_cs_config() is scheduled to run after a CARD_INSERTION
203 * event is received, to configure the PCMCIA socket, and to make the
204 * device available to the system.
207 static int spectrum_cs_config_check(struct pcmcia_device *p_dev,
208 cistpl_cftable_entry_t *cfg,
209 cistpl_cftable_entry_t *dflt,
216 /* Use power settings for Vcc and Vpp if present */
217 /* Note that the CIS values need to be rescaled */
218 if (cfg->vcc.present & (1 << CISTPL_POWER_VNOM)) {
219 if (vcc != cfg->vcc.param[CISTPL_POWER_VNOM] / 10000) {
220 DEBUG(2, "%s: Vcc mismatch (vcc = %d, CIS = %d)\n",
222 cfg->vcc.param[CISTPL_POWER_VNOM] / 10000);
226 } else if (dflt->vcc.present & (1 << CISTPL_POWER_VNOM)) {
227 if (vcc != dflt->vcc.param[CISTPL_POWER_VNOM] / 10000) {
228 DEBUG(2, "%s: Vcc mismatch (vcc = %d, CIS = %d)\n",
230 dflt->vcc.param[CISTPL_POWER_VNOM] / 10000);
236 if (cfg->vpp1.present & (1 << CISTPL_POWER_VNOM))
238 cfg->vpp1.param[CISTPL_POWER_VNOM] / 10000;
239 else if (dflt->vpp1.present & (1 << CISTPL_POWER_VNOM))
241 dflt->vpp1.param[CISTPL_POWER_VNOM] / 10000;
243 /* Do we need to allocate an interrupt? */
244 p_dev->config_flags |= CONF_ENABLE_IRQ;
246 /* IO window settings */
247 p_dev->resource[0]->end = p_dev->resource[1]->end = 0;
248 if ((cfg->io.nwin > 0) || (dflt->io.nwin > 0)) {
249 cistpl_io_t *io = (cfg->io.nwin) ? &cfg->io : &dflt->io;
250 p_dev->io_lines = io->flags & CISTPL_IO_LINES_MASK;
251 p_dev->resource[0]->flags &= ~IO_DATA_PATH_WIDTH;
252 p_dev->resource[0]->flags |=
253 pcmcia_io_cfg_data_width(io->flags);
254 p_dev->resource[0]->start = io->win[0].base;
255 p_dev->resource[0]->end = io->win[0].len;
257 p_dev->resource[1]->flags = p_dev->resource[0]->flags;
258 p_dev->resource[1]->start = io->win[1].base;
259 p_dev->resource[1]->end = io->win[1].len;
262 /* This reserves IO space but doesn't actually enable it */
263 if (pcmcia_request_io(p_dev) != 0)
269 pcmcia_disable_device(p_dev);
274 spectrum_cs_config(struct pcmcia_device *link)
276 struct orinoco_private *priv = link->priv;
277 hermes_t *hw = &priv->hw;
282 * In this loop, we scan the CIS for configuration table
283 * entries, each of which describes a valid card
284 * configuration, including voltage, IO window, memory window,
285 * and interrupt settings.
287 * We make no assumptions about the card to be configured: we
288 * use just the information available in the CIS. In an ideal
289 * world, this would work for any PCMCIA card, but it requires
290 * a complete and accurate CIS. In practice, a driver usually
291 * "knows" most of these things without consulting the CIS,
292 * and most client drivers will only use the CIS to fill in
293 * implementation-defined details.
295 ret = pcmcia_loop_config(link, spectrum_cs_config_check, NULL);
298 printk(KERN_ERR PFX "GetNextTuple(): No matching "
299 "CIS configuration. Maybe you need the "
300 "ignore_cis_vcc=1 parameter.\n");
304 ret = pcmcia_request_irq(link, orinoco_interrupt);
308 /* We initialize the hermes structure before completing PCMCIA
309 * configuration just in case the interrupt handler gets
311 mem = ioport_map(link->resource[0]->start,
312 resource_size(link->resource[0]));
316 hermes_struct_init(hw, mem, HERMES_16BIT_REGSPACING);
317 hw->eeprom_pda = true;
320 * This actually configures the PCMCIA socket -- setting up
321 * the I/O windows and the interrupt mapping, and putting the
322 * card and host interface into "Memory and IO" mode.
324 ret = pcmcia_enable_device(link);
329 if (spectrum_cs_hard_reset(priv) != 0)
332 /* Initialise the main driver */
333 if (orinoco_init(priv) != 0) {
334 printk(KERN_ERR PFX "orinoco_init() failed\n");
338 /* Register an interface with the stack */
339 if (orinoco_if_add(priv, link->resource[0]->start,
340 link->irq, NULL) != 0) {
341 printk(KERN_ERR PFX "orinoco_if_add() failed\n");
348 spectrum_cs_release(link);
350 } /* spectrum_cs_config */
353 * After a card is removed, spectrum_cs_release() will unregister the
354 * device, and release the PCMCIA configuration. If the device is
355 * still open, this will be postponed until it is closed.
358 spectrum_cs_release(struct pcmcia_device *link)
360 struct orinoco_private *priv = link->priv;
363 /* We're committed to taking the device away now, so mark the
364 * hardware as unavailable */
365 priv->hw.ops->lock_irqsave(&priv->lock, &flags);
366 priv->hw_unavailable++;
367 priv->hw.ops->unlock_irqrestore(&priv->lock, &flags);
369 pcmcia_disable_device(link);
371 ioport_unmap(priv->hw.iobase);
372 } /* spectrum_cs_release */
376 spectrum_cs_suspend(struct pcmcia_device *link)
378 struct orinoco_private *priv = link->priv;
381 /* Mark the device as stopped, to block IO until later */
388 spectrum_cs_resume(struct pcmcia_device *link)
390 struct orinoco_private *priv = link->priv;
391 int err = orinoco_up(priv);
397 /********************************************************************/
398 /* Module initialization */
399 /********************************************************************/
401 /* Can't be declared "const" or the whole __initdata section will
403 static char version[] __initdata = DRIVER_NAME " " DRIVER_VERSION
404 " (Pavel Roskin <proski@gnu.org>,"
405 " David Gibson <hermes@gibson.dropbear.id.au>, et al)";
407 static struct pcmcia_device_id spectrum_cs_ids[] = {
408 PCMCIA_DEVICE_MANF_CARD(0x026c, 0x0001), /* Symbol Spectrum24 LA4137 */
409 PCMCIA_DEVICE_MANF_CARD(0x0104, 0x0001), /* Socket Communications CF */
410 PCMCIA_DEVICE_PROD_ID12("Intel", "PRO/Wireless LAN PC Card", 0x816cc815, 0x6fbf459a), /* 2011B, not 2011 */
413 MODULE_DEVICE_TABLE(pcmcia, spectrum_cs_ids);
415 static struct pcmcia_driver orinoco_driver = {
416 .owner = THIS_MODULE,
420 .probe = spectrum_cs_probe,
421 .remove = spectrum_cs_detach,
422 .suspend = spectrum_cs_suspend,
423 .resume = spectrum_cs_resume,
424 .id_table = spectrum_cs_ids,
428 init_spectrum_cs(void)
430 printk(KERN_DEBUG "%s\n", version);
432 return pcmcia_register_driver(&orinoco_driver);
436 exit_spectrum_cs(void)
438 pcmcia_unregister_driver(&orinoco_driver);
441 module_init(init_spectrum_cs);
442 module_exit(exit_spectrum_cs);