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Merge head 'drm-3264' of master.kernel.org:/pub/scm/linux/kernel/git/airlied/drm-2.6
[deliverable/linux.git] / drivers / net / wireless / wl3501_cs.c
CommitLineData
1da177e4
LT		 1/*
2 * WL3501 Wireless LAN PCMCIA Card Driver for Linux
3 * Written originally for Linux 2.0.30 by Fox Chen, mhchen@golf.ccl.itri.org.tw
4 * Ported to 2.2, 2.4 & 2.5 by Arnaldo Carvalho de Melo <acme@conectiva.com.br>
5 * Wireless extensions in 2.4 by Gustavo Niemeyer <niemeyer@conectiva.com>
6 *
7 * References used by Fox Chen while writing the original driver for 2.0.30:
8 *
9 * 1. WL24xx packet drivers (tooasm.asm)
10 * 2. Access Point Firmware Interface Specification for IEEE 802.11 SUTRO
11 * 3. IEEE 802.11
12 * 4. Linux network driver (/usr/src/linux/drivers/net)
13 * 5. ISA card driver - wl24.c
14 * 6. Linux PCMCIA skeleton driver - skeleton.c
15 * 7. Linux PCMCIA 3c589 network driver - 3c589_cs.c
16 *
17 * Tested with WL2400 firmware 1.2, Linux 2.0.30, and pcmcia-cs-2.9.12
18 * 1. Performance: about 165 Kbytes/sec in TCP/IP with Ad-Hoc mode.
19 * rsh 192.168.1.3 "dd if=/dev/zero bs=1k count=1000" > /dev/null
20 * (Specification 2M bits/sec. is about 250 Kbytes/sec., but we must deduct
21 * ETHER/IP/UDP/TCP header, and acknowledgement overhead)
22 *
23 * Tested with Planet AP in 2.4.17, 184 Kbytes/s in UDP in Infrastructure mode,
24 * 173 Kbytes/s in TCP.
25 *
26 * Tested with Planet AP in 2.5.73-bk, 216 Kbytes/s in Infrastructure mode
27 * with a SMP machine (dual pentium 100), using pktgen, 432 pps (pkt_size = 60)
28 */
29#undef REALLY_SLOW_IO /* most systems can safely undef this */
30
31#include <linux/config.h>
32#include <linux/delay.h>
33#include <linux/types.h>
34#include <linux/ethtool.h>
35#include <linux/init.h>
36#include <linux/interrupt.h>
37#include <linux/in.h>
38#include <linux/kernel.h>
39#include <linux/module.h>
40#include <linux/fcntl.h>
41#include <linux/if_arp.h>
42#include <linux/ioport.h>
43#include <linux/netdevice.h>
44#include <linux/etherdevice.h>
45#include <linux/skbuff.h>
46#include <linux/slab.h>
47#include <linux/string.h>
48#include <linux/wireless.h>
49
50#include <net/iw_handler.h>
51
1da177e4
LT		 52#include <pcmcia/cs_types.h>
53#include <pcmcia/cs.h>
54#include <pcmcia/cistpl.h>
55#include <pcmcia/cisreg.h>
56#include <pcmcia/ds.h>
57
58#include <asm/io.h>
59#include <asm/uaccess.h>
60#include <asm/system.h>
61
62#include "wl3501.h"
63
64#ifndef __i386__
65#define slow_down_io()
66#endif
67
68/* For rough constant delay */
69#define WL3501_NOPLOOP(n) { int x = 0; while (x++ < n) slow_down_io(); }
70
71/*
72 * All the PCMCIA modules use PCMCIA_DEBUG to control debugging. If you do not
73 * define PCMCIA_DEBUG at all, all the debug code will be left out. If you
74 * compile with PCMCIA_DEBUG=0, the debug code will be present but disabled --
75 * but it can then be enabled for specific modules at load time with a
76 * 'pc_debug=#' option to insmod.
77 */
78#define PCMCIA_DEBUG 0
79#ifdef PCMCIA_DEBUG
80static int pc_debug = PCMCIA_DEBUG;
81module_param(pc_debug, int, 0);
82#define dprintk(n, format, args...) \
83 { if (pc_debug > (n)) \
84 printk(KERN_INFO "%s: " format "\n", __FUNCTION__ , ##args); }
85#else
86#define dprintk(n, format, args...)
87#endif
88
89#define wl3501_outb(a, b) { outb(a, b); slow_down_io(); }
90#define wl3501_outb_p(a, b) { outb_p(a, b); slow_down_io(); }
91#define wl3501_outsb(a, b, c) { outsb(a, b, c); slow_down_io(); }
92
93#define WL3501_RELEASE_TIMEOUT (25 * HZ)
94#define WL3501_MAX_ADHOC_TRIES 16
95
96#define WL3501_RESUME 0
97#define WL3501_SUSPEND 1
98
99/*
100 * The event() function is this driver's Card Services event handler. It will
101 * be called by Card Services when an appropriate card status event is
102 * received. The config() and release() entry points are used to configure or
103 * release a socket, in response to card insertion and ejection events. They
104 * are invoked from the wl24 event handler.
105 */
106static void wl3501_config(dev_link_t *link);
107static void wl3501_release(dev_link_t *link);
108static int wl3501_event(event_t event, int pri, event_callback_args_t *args);
109
110/*
111 * The dev_info variable is the "key" that is used to match up this
112 * device driver with appropriate cards, through the card configuration
113 * database.
114 */
115static dev_info_t wl3501_dev_info = "wl3501_cs";
116
117static int wl3501_chan2freq[] = {
118 [0] = 2412, [1] = 2417, [2] = 2422, [3] = 2427, [4] = 2432,
119 [5] = 2437, [6] = 2442, [7] = 2447, [8] = 2452, [9] = 2457,
120 [10] = 2462, [11] = 2467, [12] = 2472, [13] = 2477,
121};
122
123static const struct {
124 int reg_domain;
125 int min, max, deflt;
126} iw_channel_table[] = {
127 {
128 .reg_domain = IW_REG_DOMAIN_FCC,
129 .min = 1,
130 .max = 11,
131 .deflt = 1,
132 },
133 {
134 .reg_domain = IW_REG_DOMAIN_DOC,
135 .min = 1,
136 .max = 11,
137 .deflt = 1,
138 },
139 {
140 .reg_domain = IW_REG_DOMAIN_ETSI,
141 .min = 1,
142 .max = 13,
143 .deflt = 1,
144 },
145 {
146 .reg_domain = IW_REG_DOMAIN_SPAIN,
147 .min = 10,
148 .max = 11,
149 .deflt = 10,
150 },
151 {
152 .reg_domain = IW_REG_DOMAIN_FRANCE,
153 .min = 10,
154 .max = 13,
155 .deflt = 10,
156 },
157 {
158 .reg_domain = IW_REG_DOMAIN_MKK,
159 .min = 14,
160 .max = 14,
161 .deflt = 14,
162 },
163 {
164 .reg_domain = IW_REG_DOMAIN_MKK1,
165 .min = 1,
166 .max = 14,
167 .deflt = 1,
168 },
169 {
170 .reg_domain = IW_REG_DOMAIN_ISRAEL,
171 .min = 3,
172 .max = 9,
173 .deflt = 9,
174 },
175};
176
177/**
178 * iw_valid_channel - validate channel in regulatory domain
179 * @reg_comain - regulatory domain
180 * @channel - channel to validate
181 *
182 * Returns 0 if invalid in the specified regulatory domain, non-zero if valid.
183 */
184static int iw_valid_channel(int reg_domain, int channel)
185{
186 int i, rc = 0;
187
188 for (i = 0; i < ARRAY_SIZE(iw_channel_table); i++)
189 if (reg_domain == iw_channel_table[i].reg_domain) {
190 rc = channel >= iw_channel_table[i].min &&
191 channel <= iw_channel_table[i].max;
192 break;
193 }
194 return rc;
195}
196
197/**
198 * iw_default_channel - get default channel for a regulatory domain
199 * @reg_comain - regulatory domain
200 *
201 * Returns the default channel for a regulatory domain
202 */
203static int iw_default_channel(int reg_domain)
204{
205 int i, rc = 1;
206
207 for (i = 0; i < ARRAY_SIZE(iw_channel_table); i++)
208 if (reg_domain == iw_channel_table[i].reg_domain) {
209 rc = iw_channel_table[i].deflt;
210 break;
211 }
212 return rc;
213}
214
215static void iw_set_mgmt_info_element(enum iw_mgmt_info_element_ids id,
216 struct iw_mgmt_info_element *el,
217 void *value, int len)
218{
219 el->id = id;
220 el->len = len;
221 memcpy(el->data, value, len);
222}
223
224static void iw_copy_mgmt_info_element(struct iw_mgmt_info_element *to,
225 struct iw_mgmt_info_element *from)
226{
227 iw_set_mgmt_info_element(from->id, to, from->data, from->len);
228}
229
230/*
231 * A linked list of "instances" of the wl24 device. Each actual PCMCIA card
232 * corresponds to one device instance, and is described by one dev_link_t
233 * structure (defined in ds.h).
234 *
235 * You may not want to use a linked list for this -- for example, the memory
236 * card driver uses an array of dev_link_t pointers, where minor device numbers
237 * are used to derive the corresponding array index.
238 */
239static dev_link_t *wl3501_dev_list;
240
241static inline void wl3501_switch_page(struct wl3501_card *this, u8 page)
242{
243 wl3501_outb(page, this->base_addr + WL3501_NIC_BSS);
244}
245
246/*
247 * Get Ethernet MAC addresss.
248 *
249 * WARNING: We switch to FPAGE0 and switc back again.
250 * Making sure there is no other WL function beening called by ISR.
251 */
252static int wl3501_get_flash_mac_addr(struct wl3501_card *this)
253{
254 int base_addr = this->base_addr;
255
256 /* get MAC addr */
257 wl3501_outb(WL3501_BSS_FPAGE3, base_addr + WL3501_NIC_BSS); /* BSS */
258 wl3501_outb(0x00, base_addr + WL3501_NIC_LMAL); /* LMAL */
259 wl3501_outb(0x40, base_addr + WL3501_NIC_LMAH); /* LMAH */
260
261 /* wait for reading EEPROM */
262 WL3501_NOPLOOP(100);
263 this->mac_addr[0] = inb(base_addr + WL3501_NIC_IODPA);
264 WL3501_NOPLOOP(100);
265 this->mac_addr[1] = inb(base_addr + WL3501_NIC_IODPA);
266 WL3501_NOPLOOP(100);
267 this->mac_addr[2] = inb(base_addr + WL3501_NIC_IODPA);
268 WL3501_NOPLOOP(100);
269 this->mac_addr[3] = inb(base_addr + WL3501_NIC_IODPA);
270 WL3501_NOPLOOP(100);
271 this->mac_addr[4] = inb(base_addr + WL3501_NIC_IODPA);
272 WL3501_NOPLOOP(100);
273 this->mac_addr[5] = inb(base_addr + WL3501_NIC_IODPA);
274 WL3501_NOPLOOP(100);
275 this->reg_domain = inb(base_addr + WL3501_NIC_IODPA);
276 WL3501_NOPLOOP(100);
277 wl3501_outb(WL3501_BSS_FPAGE0, base_addr + WL3501_NIC_BSS);
278 wl3501_outb(0x04, base_addr + WL3501_NIC_LMAL);
279 wl3501_outb(0x40, base_addr + WL3501_NIC_LMAH);
280 WL3501_NOPLOOP(100);
281 this->version[0] = inb(base_addr + WL3501_NIC_IODPA);
282 WL3501_NOPLOOP(100);
283 this->version[1] = inb(base_addr + WL3501_NIC_IODPA);
284 /* switch to SRAM Page 0 (for safety) */
285 wl3501_switch_page(this, WL3501_BSS_SPAGE0);
286
287 /* The MAC addr should be 00:60:... */
288 return this->mac_addr[0] == 0x00 && this->mac_addr[1] == 0x60;
289}
290
291/**
292 * wl3501_set_to_wla - Move 'size' bytes from PC to card
293 * @dest: Card addressing space
294 * @src: PC addressing space
295 * @size: Bytes to move
296 *
297 * Move 'size' bytes from PC to card. (Shouldn't be interrupted)
298 */
299void wl3501_set_to_wla(struct wl3501_card *this, u16 dest, void *src, int size)
300{
301 /* switch to SRAM Page 0 */
302 wl3501_switch_page(this, (dest & 0x8000) ? WL3501_BSS_SPAGE1 :
303 WL3501_BSS_SPAGE0);
304 /* set LMAL and LMAH */
305 wl3501_outb(dest & 0xff, this->base_addr + WL3501_NIC_LMAL);
306 wl3501_outb(((dest >> 8) & 0x7f), this->base_addr + WL3501_NIC_LMAH);
307
308 /* rep out to Port A */
309 wl3501_outsb(this->base_addr + WL3501_NIC_IODPA, src, size);
310}
311
312/**
313 * wl3501_get_from_wla - Move 'size' bytes from card to PC
314 * @src: Card addressing space
315 * @dest: PC addressing space
316 * @size: Bytes to move
317 *
318 * Move 'size' bytes from card to PC. (Shouldn't be interrupted)
319 */
320void wl3501_get_from_wla(struct wl3501_card *this, u16 src, void *dest,
321 int size)
322{
323 /* switch to SRAM Page 0 */
324 wl3501_switch_page(this, (src & 0x8000) ? WL3501_BSS_SPAGE1 :
325 WL3501_BSS_SPAGE0);
326 /* set LMAL and LMAH */
327 wl3501_outb(src & 0xff, this->base_addr + WL3501_NIC_LMAL);
328 wl3501_outb((src >> 8) & 0x7f, this->base_addr + WL3501_NIC_LMAH);
329
330 /* rep get from Port A */
331 insb(this->base_addr + WL3501_NIC_IODPA, dest, size);
332}
333
334/*
335 * Get/Allocate a free Tx Data Buffer
336 *
337 * *--------------*-----------------*----------------------------------*
338 * | PLCP | MAC Header | DST SRC Data ... |
339 * | (24 bytes) | (30 bytes) | (6) (6) (Ethernet Row Data) |
340 * *--------------*-----------------*----------------------------------*
341 * \ \- IEEE 802.11 -/ \-------------- len --------------/
342 * \-struct wl3501_80211_tx_hdr--/ \-------- Ethernet Frame -------/
343 *
344 * Return = Postion in Card
345 */
346static u16 wl3501_get_tx_buffer(struct wl3501_card *this, u16 len)
347{
348 u16 next, blk_cnt = 0, zero = 0;
349 u16 full_len = sizeof(struct wl3501_80211_tx_hdr) + len;
350 u16 ret = 0;
351
352 if (full_len > this->tx_buffer_cnt * 254)
353 goto out;
354 ret = this->tx_buffer_head;
355 while (full_len) {
356 if (full_len < 254)
357 full_len = 0;
358 else
359 full_len -= 254;
360 wl3501_get_from_wla(this, this->tx_buffer_head, &next,
361 sizeof(next));
362 if (!full_len)
363 wl3501_set_to_wla(this, this->tx_buffer_head, &zero,
364 sizeof(zero));
365 this->tx_buffer_head = next;
366 blk_cnt++;
367 /* if buffer is not enough */
368 if (!next && full_len) {
369 this->tx_buffer_head = ret;
370 ret = 0;
371 goto out;
372 }
373 }
374 this->tx_buffer_cnt -= blk_cnt;
375out:
376 return ret;
377}
378
379/*
380 * Free an allocated Tx Buffer. ptr must be correct position.
381 */
382static void wl3501_free_tx_buffer(struct wl3501_card *this, u16 ptr)
383{
384 /* check if all space is not free */
385 if (!this->tx_buffer_head)
386 this->tx_buffer_head = ptr;
387 else
388 wl3501_set_to_wla(this, this->tx_buffer_tail,
389 &ptr, sizeof(ptr));
390 while (ptr) {
391 u16 next;
392
393 this->tx_buffer_cnt++;
394 wl3501_get_from_wla(this, ptr, &next, sizeof(next));
395 this->tx_buffer_tail = ptr;
396 ptr = next;
397 }
398}
399
400static int wl3501_esbq_req_test(struct wl3501_card *this)
401{
402 u8 tmp;
403
404 wl3501_get_from_wla(this, this->esbq_req_head + 3, &tmp, sizeof(tmp));
405 return tmp & 0x80;
406}
407
408static void wl3501_esbq_req(struct wl3501_card *this, u16 *ptr)
409{
410 u16 tmp = 0;
411
412 wl3501_set_to_wla(this, this->esbq_req_head, ptr, 2);
413 wl3501_set_to_wla(this, this->esbq_req_head + 2, &tmp, sizeof(tmp));
414 this->esbq_req_head += 4;
415 if (this->esbq_req_head >= this->esbq_req_end)
416 this->esbq_req_head = this->esbq_req_start;
417}
418
419static int wl3501_esbq_exec(struct wl3501_card *this, void *sig, int sig_size)
420{
421 int rc = -EIO;
422
423 if (wl3501_esbq_req_test(this)) {
424 u16 ptr = wl3501_get_tx_buffer(this, sig_size);
425 if (ptr) {
426 wl3501_set_to_wla(this, ptr, sig, sig_size);
427 wl3501_esbq_req(this, &ptr);
428 rc = 0;
429 }
430 }
431 return rc;
432}
433
434static int wl3501_get_mib_value(struct wl3501_card *this, u8 index,
435 void *bf, int size)
436{
437 struct wl3501_get_req sig = {
438 .sig_id = WL3501_SIG_GET_REQ,
439 .mib_attrib = index,
440 };
441 unsigned long flags;
442 int rc = -EIO;
443
444 spin_lock_irqsave(&this->lock, flags);
445 if (wl3501_esbq_req_test(this)) {
446 u16 ptr = wl3501_get_tx_buffer(this, sizeof(sig));
447 if (ptr) {
448 wl3501_set_to_wla(this, ptr, &sig, sizeof(sig));
449 wl3501_esbq_req(this, &ptr);
450 this->sig_get_confirm.mib_status = 255;
451 spin_unlock_irqrestore(&this->lock, flags);
452 rc = wait_event_interruptible(this->wait,
453 this->sig_get_confirm.mib_status != 255);
454 if (!rc)
455 memcpy(bf, this->sig_get_confirm.mib_value,
456 size);
457 goto out;
458 }
459 }
460 spin_unlock_irqrestore(&this->lock, flags);
461out:
462 return rc;
463}
464
465static int wl3501_pwr_mgmt(struct wl3501_card *this, int suspend)
466{
467 struct wl3501_pwr_mgmt_req sig = {
468 .sig_id = WL3501_SIG_PWR_MGMT_REQ,
469 .pwr_save = suspend,
470 .wake_up = !suspend,
471 .receive_dtims = 10,
472 };
473 unsigned long flags;
474 int rc = -EIO;
475
476 spin_lock_irqsave(&this->lock, flags);
477 if (wl3501_esbq_req_test(this)) {
478 u16 ptr = wl3501_get_tx_buffer(this, sizeof(sig));
479 if (ptr) {
480 wl3501_set_to_wla(this, ptr, &sig, sizeof(sig));
481 wl3501_esbq_req(this, &ptr);
482 this->sig_pwr_mgmt_confirm.status = 255;
483 spin_unlock_irqrestore(&this->lock, flags);
484 rc = wait_event_interruptible(this->wait,
485 this->sig_pwr_mgmt_confirm.status != 255);
486 printk(KERN_INFO "%s: %s status=%d\n", __FUNCTION__,
487 suspend ? "suspend" : "resume",
488 this->sig_pwr_mgmt_confirm.status);
489 goto out;
490 }
491 }
492 spin_unlock_irqrestore(&this->lock, flags);
493out:
494 return rc;
495}
496
497/**
498 * wl3501_send_pkt - Send a packet.
499 * @this - card
500 *
501 * Send a packet.
502 *
503 * data = Ethernet raw frame. (e.g. data[0] - data[5] is Dest MAC Addr,
504 * data[6] - data[11] is Src MAC Addr)
505 * Ref: IEEE 802.11
506 */
507static int wl3501_send_pkt(struct wl3501_card *this, u8 *data, u16 len)
508{
509 u16 bf, sig_bf, next, tmplen, pktlen;
510 struct wl3501_md_req sig = {
511 .sig_id = WL3501_SIG_MD_REQ,
512 };
513 u8 *pdata = (char *)data;
514 int rc = -EIO;
515
516 if (wl3501_esbq_req_test(this)) {
517 sig_bf = wl3501_get_tx_buffer(this, sizeof(sig));
518 rc = -ENOMEM;
519 if (!sig_bf) /* No free buffer available */
520 goto out;
521 bf = wl3501_get_tx_buffer(this, len + 26 + 24);
522 if (!bf) {
523 /* No free buffer available */
524 wl3501_free_tx_buffer(this, sig_bf);
525 goto out;
526 }
527 rc = 0;
528 memcpy(&sig.daddr[0], pdata, 12);
529 pktlen = len - 12;
530 pdata += 12;
531 sig.data = bf;
532 if (((*pdata) * 256 + (*(pdata + 1))) > 1500) {
533 u8 addr4[ETH_ALEN] = {
534 [0] = 0xAA, [1] = 0xAA, [2] = 0x03, [4] = 0x00,
535 };
536
537 wl3501_set_to_wla(this, bf + 2 +
538 offsetof(struct wl3501_tx_hdr, addr4),
539 addr4, sizeof(addr4));
540 sig.size = pktlen + 24 + 4 + 6;
541 if (pktlen > (254 - sizeof(struct wl3501_tx_hdr))) {
542 tmplen = 254 - sizeof(struct wl3501_tx_hdr);
543 pktlen -= tmplen;
544 } else {
545 tmplen = pktlen;
546 pktlen = 0;
547 }
548 wl3501_set_to_wla(this,
549 bf + 2 + sizeof(struct wl3501_tx_hdr),
550 pdata, tmplen);
551 pdata += tmplen;
552 wl3501_get_from_wla(this, bf, &next, sizeof(next));
553 bf = next;
554 } else {
555 sig.size = pktlen + 24 + 4 - 2;
556 pdata += 2;
557 pktlen -= 2;
558 if (pktlen > (254 - sizeof(struct wl3501_tx_hdr) + 6)) {
559 tmplen = 254 - sizeof(struct wl3501_tx_hdr) + 6;
560 pktlen -= tmplen;
561 } else {
562 tmplen = pktlen;
563 pktlen = 0;
564 }
565 wl3501_set_to_wla(this, bf + 2 +
566 offsetof(struct wl3501_tx_hdr, addr4),
567 pdata, tmplen);
568 pdata += tmplen;
569 wl3501_get_from_wla(this, bf, &next, sizeof(next));
570 bf = next;
571 }
572 while (pktlen > 0) {
573 if (pktlen > 254) {
574 tmplen = 254;
575 pktlen -= 254;
576 } else {
577 tmplen = pktlen;
578 pktlen = 0;
579 }
580 wl3501_set_to_wla(this, bf + 2, pdata, tmplen);
581 pdata += tmplen;
582 wl3501_get_from_wla(this, bf, &next, sizeof(next));
583 bf = next;
584 }
585 wl3501_set_to_wla(this, sig_bf, &sig, sizeof(sig));
586 wl3501_esbq_req(this, &sig_bf);
587 }
588out:
589 return rc;
590}
591
592static int wl3501_mgmt_resync(struct wl3501_card *this)
593{
594 struct wl3501_resync_req sig = {
595 .sig_id = WL3501_SIG_RESYNC_REQ,
596 };
597
598 return wl3501_esbq_exec(this, &sig, sizeof(sig));
599}
600
601static inline int wl3501_fw_bss_type(struct wl3501_card *this)
602{
603 return this->net_type == IW_MODE_INFRA ? WL3501_NET_TYPE_INFRA :
604 WL3501_NET_TYPE_ADHOC;
605}
606
607static inline int wl3501_fw_cap_info(struct wl3501_card *this)
608{
609 return this->net_type == IW_MODE_INFRA ? WL3501_MGMT_CAPABILITY_ESS :
610 WL3501_MGMT_CAPABILITY_IBSS;
611}
612
613static int wl3501_mgmt_scan(struct wl3501_card *this, u16 chan_time)
614{
615 struct wl3501_scan_req sig = {
616 .sig_id = WL3501_SIG_SCAN_REQ,
617 .scan_type = WL3501_SCAN_TYPE_ACTIVE,
618 .probe_delay = 0x10,
619 .min_chan_time = chan_time,
620 .max_chan_time = chan_time,
621 .bss_type = wl3501_fw_bss_type(this),
622 };
623
624 this->bss_cnt = this->join_sta_bss = 0;
625 return wl3501_esbq_exec(this, &sig, sizeof(sig));
626}
627
628static int wl3501_mgmt_join(struct wl3501_card *this, u16 stas)
629{
630 struct wl3501_join_req sig = {
631 .sig_id = WL3501_SIG_JOIN_REQ,
632 .timeout = 10,
633 .ds_pset = {
634 .el = {
635 .id = IW_MGMT_INFO_ELEMENT_DS_PARAMETER_SET,
636 .len = 1,
637 },
638 .chan = this->chan,
639 },
640 };
641
642 memcpy(&sig.beacon_period, &this->bss_set[stas].beacon_period, 72);
643 return wl3501_esbq_exec(this, &sig, sizeof(sig));
644}
645
646static int wl3501_mgmt_start(struct wl3501_card *this)
647{
648 struct wl3501_start_req sig = {
649 .sig_id = WL3501_SIG_START_REQ,
650 .beacon_period = 400,
651 .dtim_period = 1,
652 .ds_pset = {
653 .el = {
654 .id = IW_MGMT_INFO_ELEMENT_DS_PARAMETER_SET,
655 .len = 1,
656 },
657 .chan = this->chan,
658 },
659 .bss_basic_rset = {
660 .el = {
661 .id = IW_MGMT_INFO_ELEMENT_SUPPORTED_RATES,
662 .len = 2,
663 },
664 .data_rate_labels = {
665 [0] = IW_MGMT_RATE_LABEL_MANDATORY |
666 IW_MGMT_RATE_LABEL_1MBIT,
667 [1] = IW_MGMT_RATE_LABEL_MANDATORY |
668 IW_MGMT_RATE_LABEL_2MBIT,
669 },
670 },
671 .operational_rset = {
672 .el = {
673 .id = IW_MGMT_INFO_ELEMENT_SUPPORTED_RATES,
674 .len = 2,
675 },
676 .data_rate_labels = {
677 [0] = IW_MGMT_RATE_LABEL_MANDATORY |
678 IW_MGMT_RATE_LABEL_1MBIT,
679 [1] = IW_MGMT_RATE_LABEL_MANDATORY |
680 IW_MGMT_RATE_LABEL_2MBIT,
681 },
682 },
683 .ibss_pset = {
684 .el = {
685 .id = IW_MGMT_INFO_ELEMENT_IBSS_PARAMETER_SET,
686 .len = 2,
687 },
688 .atim_window = 10,
689 },
690 .bss_type = wl3501_fw_bss_type(this),
691 .cap_info = wl3501_fw_cap_info(this),
692 };
693
694 iw_copy_mgmt_info_element(&sig.ssid.el, &this->essid.el);
695 iw_copy_mgmt_info_element(&this->keep_essid.el, &this->essid.el);
696 return wl3501_esbq_exec(this, &sig, sizeof(sig));
697}
698
699static void wl3501_mgmt_scan_confirm(struct wl3501_card *this, u16 addr)
700{
701 u16 i = 0;
702 int matchflag = 0;
703 struct wl3501_scan_confirm sig;
704
705 dprintk(3, "entry");
706 wl3501_get_from_wla(this, addr, &sig, sizeof(sig));
707 if (sig.status == WL3501_STATUS_SUCCESS) {
708 dprintk(3, "success");
709 if ((this->net_type == IW_MODE_INFRA &&
710 (sig.cap_info & WL3501_MGMT_CAPABILITY_ESS)) ||
711 (this->net_type == IW_MODE_ADHOC &&
712 (sig.cap_info & WL3501_MGMT_CAPABILITY_IBSS)) ||
713 this->net_type == IW_MODE_AUTO) {
714 if (!this->essid.el.len)
715 matchflag = 1;
716 else if (this->essid.el.len == 3 &&
717 !memcmp(this->essid.essid, "ANY", 3))
718 matchflag = 1;
719 else if (this->essid.el.len != sig.ssid.el.len)
720 matchflag = 0;
721 else if (memcmp(this->essid.essid, sig.ssid.essid,
722 this->essid.el.len))
723 matchflag = 0;
724 else
725 matchflag = 1;
726 if (matchflag) {
727 for (i = 0; i < this->bss_cnt; i++) {
728 if (!memcmp(this->bss_set[i].bssid,
729 sig.bssid, ETH_ALEN)) {
730 matchflag = 0;
731 break;
732 }
733 }
734 }
735 if (matchflag && (i < 20)) {
736 memcpy(&this->bss_set[i].beacon_period,
737 &sig.beacon_period, 73);
738 this->bss_cnt++;
739 this->rssi = sig.rssi;
740 }
741 }
742 } else if (sig.status == WL3501_STATUS_TIMEOUT) {
743 dprintk(3, "timeout");
744 this->join_sta_bss = 0;
745 for (i = this->join_sta_bss; i < this->bss_cnt; i++)
746 if (!wl3501_mgmt_join(this, i))
747 break;
748 this->join_sta_bss = i;
749 if (this->join_sta_bss == this->bss_cnt) {
750 if (this->net_type == IW_MODE_INFRA)
751 wl3501_mgmt_scan(this, 100);
752 else {
753 this->adhoc_times++;
754 if (this->adhoc_times > WL3501_MAX_ADHOC_TRIES)
755 wl3501_mgmt_start(this);
756 else
757 wl3501_mgmt_scan(this, 100);
758 }
759 }
760 }
761}
762
763/**
764 * wl3501_block_interrupt - Mask interrupt from SUTRO
765 * @this - card
766 *
767 * Mask interrupt from SUTRO. (i.e. SUTRO cannot interrupt the HOST)
768 * Return: 1 if interrupt is originally enabled
769 */
770static int wl3501_block_interrupt(struct wl3501_card *this)
771{
772 u8 old = inb(this->base_addr + WL3501_NIC_GCR);
773 u8 new = old & (~(WL3501_GCR_ECINT | WL3501_GCR_INT2EC |
774 WL3501_GCR_ENECINT));
775
776 wl3501_outb(new, this->base_addr + WL3501_NIC_GCR);
777 return old & WL3501_GCR_ENECINT;
778}
779
780/**
781 * wl3501_unblock_interrupt - Enable interrupt from SUTRO
782 * @this - card
783 *
784 * Enable interrupt from SUTRO. (i.e. SUTRO can interrupt the HOST)
785 * Return: 1 if interrupt is originally enabled
786 */
787static int wl3501_unblock_interrupt(struct wl3501_card *this)
788{
789 u8 old = inb(this->base_addr + WL3501_NIC_GCR);
790 u8 new = (old & ~(WL3501_GCR_ECINT | WL3501_GCR_INT2EC)) |
791 WL3501_GCR_ENECINT;
792
793 wl3501_outb(new, this->base_addr + WL3501_NIC_GCR);
794 return old & WL3501_GCR_ENECINT;
795}
796
797/**
798 * wl3501_receive - Receive data from Receive Queue.
799 *
800 * Receive data from Receive Queue.
801 *
802 * @this: card
803 * @bf: address of host
804 * @size: size of buffer.
805 */
806static u16 wl3501_receive(struct wl3501_card *this, u8 *bf, u16 size)
807{
808 u16 next_addr, next_addr1;
809 u8 *data = bf + 12;
810
811 size -= 12;
812 wl3501_get_from_wla(this, this->start_seg + 2,
813 &next_addr, sizeof(next_addr));
814 if (size > WL3501_BLKSZ - sizeof(struct wl3501_rx_hdr)) {
815 wl3501_get_from_wla(this,
816 this->start_seg +
817 sizeof(struct wl3501_rx_hdr), data,
818 WL3501_BLKSZ -
819 sizeof(struct wl3501_rx_hdr));
820 size -= WL3501_BLKSZ - sizeof(struct wl3501_rx_hdr);
821 data += WL3501_BLKSZ - sizeof(struct wl3501_rx_hdr);
822 } else {
823 wl3501_get_from_wla(this,
824 this->start_seg +
825 sizeof(struct wl3501_rx_hdr),
826 data, size);
827 size = 0;
828 }
829 while (size > 0) {
830 if (size > WL3501_BLKSZ - 5) {
831 wl3501_get_from_wla(this, next_addr + 5, data,
832 WL3501_BLKSZ - 5);
833 size -= WL3501_BLKSZ - 5;
834 data += WL3501_BLKSZ - 5;
835 wl3501_get_from_wla(this, next_addr + 2, &next_addr1,
836 sizeof(next_addr1));
837 next_addr = next_addr1;
838 } else {
839 wl3501_get_from_wla(this, next_addr + 5, data, size);
840 size = 0;
841 }
842 }
843 return 0;
844}
845
846static void wl3501_esbq_req_free(struct wl3501_card *this)
847{
848 u8 tmp;
849 u16 addr;
850
851 if (this->esbq_req_head == this->esbq_req_tail)
852 goto out;
853 wl3501_get_from_wla(this, this->esbq_req_tail + 3, &tmp, sizeof(tmp));
854 if (!(tmp & 0x80))
855 goto out;
856 wl3501_get_from_wla(this, this->esbq_req_tail, &addr, sizeof(addr));
857 wl3501_free_tx_buffer(this, addr);
858 this->esbq_req_tail += 4;
859 if (this->esbq_req_tail >= this->esbq_req_end)
860 this->esbq_req_tail = this->esbq_req_start;
861out:
862 return;
863}
864
865static int wl3501_esbq_confirm(struct wl3501_card *this)
866{
867 u8 tmp;
868
869 wl3501_get_from_wla(this, this->esbq_confirm + 3, &tmp, sizeof(tmp));
870 return tmp & 0x80;
871}
872
873static void wl3501_online(struct net_device *dev)
874{
875 struct wl3501_card *this = dev->priv;
876
877 printk(KERN_INFO "%s: Wireless LAN online. BSSID: "
878 "%02X %02X %02X %02X %02X %02X\n", dev->name,
879 this->bssid[0], this->bssid[1], this->bssid[2],
880 this->bssid[3], this->bssid[4], this->bssid[5]);
881 netif_wake_queue(dev);
882}
883
884static void wl3501_esbq_confirm_done(struct wl3501_card *this)
885{
886 u8 tmp = 0;
887
888 wl3501_set_to_wla(this, this->esbq_confirm + 3, &tmp, sizeof(tmp));
889 this->esbq_confirm += 4;
890 if (this->esbq_confirm >= this->esbq_confirm_end)
891 this->esbq_confirm = this->esbq_confirm_start;
892}
893
894static int wl3501_mgmt_auth(struct wl3501_card *this)
895{
896 struct wl3501_auth_req sig = {
897 .sig_id = WL3501_SIG_AUTH_REQ,
898 .type = WL3501_SYS_TYPE_OPEN,
899 .timeout = 1000,
900 };
901
902 dprintk(3, "entry");
903 memcpy(sig.mac_addr, this->bssid, ETH_ALEN);
904 return wl3501_esbq_exec(this, &sig, sizeof(sig));
905}
906
907static int wl3501_mgmt_association(struct wl3501_card *this)
908{
909 struct wl3501_assoc_req sig = {
910 .sig_id = WL3501_SIG_ASSOC_REQ,
911 .timeout = 1000,
912 .listen_interval = 5,
913 .cap_info = this->cap_info,
914 };
915
916 dprintk(3, "entry");
917 memcpy(sig.mac_addr, this->bssid, ETH_ALEN);
918 return wl3501_esbq_exec(this, &sig, sizeof(sig));
919}
920
921static void wl3501_mgmt_join_confirm(struct net_device *dev, u16 addr)
922{
923 struct wl3501_card *this = dev->priv;
924 struct wl3501_join_confirm sig;
925
926 dprintk(3, "entry");
927 wl3501_get_from_wla(this, addr, &sig, sizeof(sig));
928 if (sig.status == WL3501_STATUS_SUCCESS) {
929 if (this->net_type == IW_MODE_INFRA) {
930 if (this->join_sta_bss < this->bss_cnt) {
931 const int i = this->join_sta_bss;
932 memcpy(this->bssid,
933 this->bss_set[i].bssid, ETH_ALEN);
934 this->chan = this->bss_set[i].ds_pset.chan;
935 iw_copy_mgmt_info_element(&this->keep_essid.el,
936 &this->bss_set[i].ssid.el);
937 wl3501_mgmt_auth(this);
938 }
939 } else {
940 const int i = this->join_sta_bss;
941
942 memcpy(&this->bssid, &this->bss_set[i].bssid, ETH_ALEN);
943 this->chan = this->bss_set[i].ds_pset.chan;
944 iw_copy_mgmt_info_element(&this->keep_essid.el,
945 &this->bss_set[i].ssid.el);
946 wl3501_online(dev);
947 }
948 } else {
949 int i;
950 this->join_sta_bss++;
951 for (i = this->join_sta_bss; i < this->bss_cnt; i++)
952 if (!wl3501_mgmt_join(this, i))
953 break;
954 this->join_sta_bss = i;
955 if (this->join_sta_bss == this->bss_cnt) {
956 if (this->net_type == IW_MODE_INFRA)
957 wl3501_mgmt_scan(this, 100);
958 else {
959 this->adhoc_times++;
960 if (this->adhoc_times > WL3501_MAX_ADHOC_TRIES)
961 wl3501_mgmt_start(this);
962 else
963 wl3501_mgmt_scan(this, 100);
964 }
965 }
966 }
967}
968
969static inline void wl3501_alarm_interrupt(struct net_device *dev,
970 struct wl3501_card *this)
971{
972 if (this->net_type == IW_MODE_INFRA) {
973 printk(KERN_INFO "Wireless LAN offline\n");
974 netif_stop_queue(dev);
975 wl3501_mgmt_resync(this);
976 }
977}
978
979static inline void wl3501_md_confirm_interrupt(struct net_device *dev,
980 struct wl3501_card *this,
981 u16 addr)
982{
983 struct wl3501_md_confirm sig;
984
985 dprintk(3, "entry");
986 wl3501_get_from_wla(this, addr, &sig, sizeof(sig));
987 wl3501_free_tx_buffer(this, sig.data);
988 if (netif_queue_stopped(dev))
989 netif_wake_queue(dev);
990}
991
992static inline void wl3501_md_ind_interrupt(struct net_device *dev,
993 struct wl3501_card *this, u16 addr)
994{
995 struct wl3501_md_ind sig;
996 struct sk_buff *skb;
997 u8 rssi, addr4[ETH_ALEN];
998 u16 pkt_len;
999
1000 wl3501_get_from_wla(this, addr, &sig, sizeof(sig));
1001 this->start_seg = sig.data;
1002 wl3501_get_from_wla(this,
1003 sig.data + offsetof(struct wl3501_rx_hdr, rssi),
1004 &rssi, sizeof(rssi));
1005 this->rssi = rssi <= 63 ? (rssi * 100) / 64 : 255;
1006
1007 wl3501_get_from_wla(this,
1008 sig.data +
1009 offsetof(struct wl3501_rx_hdr, addr4),
1010 &addr4, sizeof(addr4));
1011 if (!(addr4[0] == 0xAA && addr4[1] == 0xAA &&
1012 addr4[2] == 0x03 && addr4[4] == 0x00)) {
1013 printk(KERN_INFO "Insupported packet type!\n");
1014 return;
1015 }
1016 pkt_len = sig.size + 12 - 24 - 4 - 6;
1017
1018 skb = dev_alloc_skb(pkt_len + 5);
1019
1020 if (!skb) {
1021 printk(KERN_WARNING "%s: Can't alloc a sk_buff of size %d.\n",
1022 dev->name, pkt_len);
1023 this->stats.rx_dropped++;
1024 } else {
1025 skb->dev = dev;
1026 skb_reserve(skb, 2); /* IP headers on 16 bytes boundaries */
1027 eth_copy_and_sum(skb, (unsigned char *)&sig.daddr, 12, 0);
1028 wl3501_receive(this, skb->data, pkt_len);
1029 skb_put(skb, pkt_len);
1030 skb->protocol = eth_type_trans(skb, dev);
1031 dev->last_rx = jiffies;
1032 this->stats.rx_packets++;
1033 this->stats.rx_bytes += skb->len;
1034 netif_rx(skb);
1035 }
1036}
1037
1038static inline void wl3501_get_confirm_interrupt(struct wl3501_card *this,
1039 u16 addr, void *sig, int size)
1040{
1041 dprintk(3, "entry");
1042 wl3501_get_from_wla(this, addr, &this->sig_get_confirm,
1043 sizeof(this->sig_get_confirm));
1044 wake_up(&this->wait);
1045}
1046
1047static inline void wl3501_start_confirm_interrupt(struct net_device *dev,
1048 struct wl3501_card *this,
1049 u16 addr)
1050{
1051 struct wl3501_start_confirm sig;
1052
1053 dprintk(3, "entry");
1054 wl3501_get_from_wla(this, addr, &sig, sizeof(sig));
1055 if (sig.status == WL3501_STATUS_SUCCESS)
1056 netif_wake_queue(dev);
1057}
1058
1059static inline void wl3501_assoc_confirm_interrupt(struct net_device *dev,
1060 u16 addr)
1061{
1062 struct wl3501_card *this = dev->priv;
1063 struct wl3501_assoc_confirm sig;
1064
1065 dprintk(3, "entry");
1066 wl3501_get_from_wla(this, addr, &sig, sizeof(sig));
1067
1068 if (sig.status == WL3501_STATUS_SUCCESS)
1069 wl3501_online(dev);
1070}
1071
1072static inline void wl3501_auth_confirm_interrupt(struct wl3501_card *this,
1073 u16 addr)
1074{
1075 struct wl3501_auth_confirm sig;
1076
1077 dprintk(3, "entry");
1078 wl3501_get_from_wla(this, addr, &sig, sizeof(sig));
1079
1080 if (sig.status == WL3501_STATUS_SUCCESS)
1081 wl3501_mgmt_association(this);
1082 else
1083 wl3501_mgmt_resync(this);
1084}
1085
1086static inline void wl3501_rx_interrupt(struct net_device *dev)
1087{
1088 int morepkts;
1089 u16 addr;
1090 u8 sig_id;
1091 struct wl3501_card *this = dev->priv;
1092
1093 dprintk(3, "entry");
1094loop:
1095 morepkts = 0;
1096 if (!wl3501_esbq_confirm(this))
1097 goto free;
1098 wl3501_get_from_wla(this, this->esbq_confirm, &addr, sizeof(addr));
1099 wl3501_get_from_wla(this, addr + 2, &sig_id, sizeof(sig_id));
1100
1101 switch (sig_id) {
1102 case WL3501_SIG_DEAUTH_IND:
1103 case WL3501_SIG_DISASSOC_IND:
1104 case WL3501_SIG_ALARM:
1105 wl3501_alarm_interrupt(dev, this);
1106 break;
1107 case WL3501_SIG_MD_CONFIRM:
1108 wl3501_md_confirm_interrupt(dev, this, addr);
1109 break;
1110 case WL3501_SIG_MD_IND:
1111 wl3501_md_ind_interrupt(dev, this, addr);
1112 break;
1113 case WL3501_SIG_GET_CONFIRM:
1114 wl3501_get_confirm_interrupt(this, addr,
1115 &this->sig_get_confirm,
1116 sizeof(this->sig_get_confirm));
1117 break;
1118 case WL3501_SIG_PWR_MGMT_CONFIRM:
1119 wl3501_get_confirm_interrupt(this, addr,
1120 &this->sig_pwr_mgmt_confirm,
1121 sizeof(this->sig_pwr_mgmt_confirm));
1122 break;
1123 case WL3501_SIG_START_CONFIRM:
1124 wl3501_start_confirm_interrupt(dev, this, addr);
1125 break;
1126 case WL3501_SIG_SCAN_CONFIRM:
1127 wl3501_mgmt_scan_confirm(this, addr);
1128 break;
1129 case WL3501_SIG_JOIN_CONFIRM:
1130 wl3501_mgmt_join_confirm(dev, addr);
1131 break;
1132 case WL3501_SIG_ASSOC_CONFIRM:
1133 wl3501_assoc_confirm_interrupt(dev, addr);
1134 break;
1135 case WL3501_SIG_AUTH_CONFIRM:
1136 wl3501_auth_confirm_interrupt(this, addr);
1137 break;
1138 case WL3501_SIG_RESYNC_CONFIRM:
1139 wl3501_mgmt_resync(this); /* FIXME: should be resync_confirm */
1140 break;
1141 }
1142 wl3501_esbq_confirm_done(this);
1143 morepkts = 1;
1144 /* free request if necessary */
1145free:
1146 wl3501_esbq_req_free(this);
1147 if (morepkts)
1148 goto loop;
1149}
1150
1151static inline void wl3501_ack_interrupt(struct wl3501_card *this)
1152{
1153 wl3501_outb(WL3501_GCR_ECINT, this->base_addr + WL3501_NIC_GCR);
1154}
1155
1156/**
1157 * wl3501_interrupt - Hardware interrupt from card.
1158 * @irq - Interrupt number
1159 * @dev_id - net_device
1160 * @regs - registers
1161 *
1162 * We must acknowledge the interrupt as soon as possible, and block the
1163 * interrupt from the same card immediately to prevent re-entry.
1164 *
1165 * Before accessing the Control_Status_Block, we must lock SUTRO first.
1166 * On the other hand, to prevent SUTRO from malfunctioning, we must
1167 * unlock the SUTRO as soon as possible.
1168 */
1169static irqreturn_t wl3501_interrupt(int irq, void *dev_id, struct pt_regs *regs)
1170{
1171 struct net_device *dev = (struct net_device *)dev_id;
1172 struct wl3501_card *this;
1173 int handled = 1;
1174
1175 if (!dev)
1176 goto unknown;
1177 this = dev->priv;
1178 spin_lock(&this->lock);
1179 wl3501_ack_interrupt(this);
1180 wl3501_block_interrupt(this);
1181 wl3501_rx_interrupt(dev);
1182 wl3501_unblock_interrupt(this);
1183 spin_unlock(&this->lock);
1184out:
1185 return IRQ_RETVAL(handled);
1186unknown:
1187 handled = 0;
1188 printk(KERN_ERR "%s: irq %d for unknown device.\n", __FUNCTION__, irq);
1189 goto out;
1190}
1191
1192static int wl3501_reset_board(struct wl3501_card *this)
1193{
1194 u8 tmp = 0;
1195 int i, rc = 0;
1196
1197 /* Coreset */
1198 wl3501_outb_p(WL3501_GCR_CORESET, this->base_addr + WL3501_NIC_GCR);
1199 wl3501_outb_p(0, this->base_addr + WL3501_NIC_GCR);
1200 wl3501_outb_p(WL3501_GCR_CORESET, this->base_addr + WL3501_NIC_GCR);
1201
1202 /* Reset SRAM 0x480 to zero */
1203 wl3501_set_to_wla(this, 0x480, &tmp, sizeof(tmp));
1204
1205 /* Start up */
1206 wl3501_outb_p(0, this->base_addr + WL3501_NIC_GCR);
1207
1208 WL3501_NOPLOOP(1024 * 50);
1209
1210 wl3501_unblock_interrupt(this); /* acme: was commented */
1211
1212 /* Polling Self_Test_Status */
1213 for (i = 0; i < 10000; i++) {
1214 wl3501_get_from_wla(this, 0x480, &tmp, sizeof(tmp));
1215
1216 if (tmp == 'W') {
1217 /* firmware complete all test successfully */
1218 tmp = 'A';
1219 wl3501_set_to_wla(this, 0x480, &tmp, sizeof(tmp));
1220 goto out;
1221 }
1222 WL3501_NOPLOOP(10);
1223 }
1224 printk(KERN_WARNING "%s: failed to reset the board!\n", __FUNCTION__);
1225 rc = -ENODEV;
1226out:
1227 return rc;
1228}
1229
1230static int wl3501_init_firmware(struct wl3501_card *this)
1231{
1232 u16 ptr, next;
1233 int rc = wl3501_reset_board(this);
1234
1235 if (rc)
1236 goto fail;
1237 this->card_name[0] = '\0';
1238 wl3501_get_from_wla(this, 0x1a00,
1239 this->card_name, sizeof(this->card_name));
1240 this->card_name[sizeof(this->card_name) - 1] = '\0';
1241 this->firmware_date[0] = '\0';
1242 wl3501_get_from_wla(this, 0x1a40,
1243 this->firmware_date, sizeof(this->firmware_date));
1244 this->firmware_date[sizeof(this->firmware_date) - 1] = '\0';
1245 /* Switch to SRAM Page 0 */
1246 wl3501_switch_page(this, WL3501_BSS_SPAGE0);
1247 /* Read parameter from card */
1248 wl3501_get_from_wla(this, 0x482, &this->esbq_req_start, 2);
1249 wl3501_get_from_wla(this, 0x486, &this->esbq_req_end, 2);
1250 wl3501_get_from_wla(this, 0x488, &this->esbq_confirm_start, 2);
1251 wl3501_get_from_wla(this, 0x48c, &this->esbq_confirm_end, 2);
1252 wl3501_get_from_wla(this, 0x48e, &this->tx_buffer_head, 2);
1253 wl3501_get_from_wla(this, 0x492, &this->tx_buffer_size, 2);
1254 this->esbq_req_tail = this->esbq_req_head = this->esbq_req_start;
1255 this->esbq_req_end += this->esbq_req_start;
1256 this->esbq_confirm = this->esbq_confirm_start;
1257 this->esbq_confirm_end += this->esbq_confirm_start;
1258 /* Initial Tx Buffer */
1259 this->tx_buffer_cnt = 1;
1260 ptr = this->tx_buffer_head;
1261 next = ptr + WL3501_BLKSZ;
1262 while ((next - this->tx_buffer_head) < this->tx_buffer_size) {
1263 this->tx_buffer_cnt++;
1264 wl3501_set_to_wla(this, ptr, &next, sizeof(next));
1265 ptr = next;
1266 next = ptr + WL3501_BLKSZ;
1267 }
1268 rc = 0;
1269 next = 0;
1270 wl3501_set_to_wla(this, ptr, &next, sizeof(next));
1271 this->tx_buffer_tail = ptr;
1272out:
1273 return rc;
1274fail:
1275 printk(KERN_WARNING "%s: failed!\n", __FUNCTION__);
1276 goto out;
1277}
1278
1279static int wl3501_close(struct net_device *dev)
1280{
1281 struct wl3501_card *this = dev->priv;
1282 int rc = -ENODEV;
1283 unsigned long flags;
1284 dev_link_t *link;
1285
1286 spin_lock_irqsave(&this->lock, flags);
1287 /* Check if the device is in wl3501_dev_list */
1288 for (link = wl3501_dev_list; link; link = link->next)
1289 if (link->priv == dev)
1290 break;
1291 if (!link)
1292 goto out;
1293 link->open--;
1294
1295 /* Stop wl3501_hard_start_xmit() from now on */
1296 netif_stop_queue(dev);
1297 wl3501_ack_interrupt(this);
1298
1299 /* Mask interrupts from the SUTRO */
1300 wl3501_block_interrupt(this);
1301
1302 rc = 0;
1303 printk(KERN_INFO "%s: WL3501 closed\n", dev->name);
1304out:
1305 spin_unlock_irqrestore(&this->lock, flags);
1306 return rc;
1307}
1308
1309/**
1310 * wl3501_reset - Reset the SUTRO.
1311 * @dev - network device
1312 *
1313 * It is almost the same as wl3501_open(). In fact, we may just wl3501_close()
1314 * and wl3501_open() again, but I wouldn't like to free_irq() when the driver
1315 * is running. It seems to be dangerous.
1316 */
1317static int wl3501_reset(struct net_device *dev)
1318{
1319 struct wl3501_card *this = dev->priv;
1320 int rc = -ENODEV;
1321
1322 wl3501_block_interrupt(this);
1323
1324 if (wl3501_init_firmware(this)) {
1325 printk(KERN_WARNING "%s: Can't initialize Firmware!\n",
1326 dev->name);
1327 /* Free IRQ, and mark IRQ as unused */
1328 free_irq(dev->irq, dev);
1329 goto out;
1330 }
1331
1332 /*
1333 * Queue has to be started only when the Card is Started
1334 */
1335 netif_stop_queue(dev);
1336 this->adhoc_times = 0;
1337 wl3501_ack_interrupt(this);
1338 wl3501_unblock_interrupt(this);
1339 wl3501_mgmt_scan(this, 100);
1340 dprintk(1, "%s: device reset", dev->name);
1341 rc = 0;
1342out:
1343 return rc;
1344}
1345
1346static void wl3501_tx_timeout(struct net_device *dev)
1347{
1348 struct wl3501_card *this = dev->priv;
1349 struct net_device_stats *stats = &this->stats;
1350 unsigned long flags;
1351 int rc;
1352
1353 stats->tx_errors++;
1354 spin_lock_irqsave(&this->lock, flags);
1355 rc = wl3501_reset(dev);
1356 spin_unlock_irqrestore(&this->lock, flags);
1357 if (rc)
1358 printk(KERN_ERR "%s: Error %d resetting card on Tx timeout!\n",
1359 dev->name, rc);
1360 else {
1361 dev->trans_start = jiffies;
1362 netif_wake_queue(dev);
1363 }
1364}
1365
1366/*
1367 * Return : 0 - OK
1368 * 1 - Could not transmit (dev_queue_xmit will queue it)
1369 * and try to sent it later
1370 */
1371static int wl3501_hard_start_xmit(struct sk_buff *skb, struct net_device *dev)
1372{
1373 int enabled, rc;
1374 struct wl3501_card *this = dev->priv;
1375 unsigned long flags;
1376
1377 spin_lock_irqsave(&this->lock, flags);
1378 enabled = wl3501_block_interrupt(this);
1379 dev->trans_start = jiffies;
1380 rc = wl3501_send_pkt(this, skb->data, skb->len);
1381 if (enabled)
1382 wl3501_unblock_interrupt(this);
1383 if (rc) {
1384 ++this->stats.tx_dropped;
1385 netif_stop_queue(dev);
1386 } else {
1387 ++this->stats.tx_packets;
1388 this->stats.tx_bytes += skb->len;
1389 kfree_skb(skb);
1390
1391 if (this->tx_buffer_cnt < 2)
1392 netif_stop_queue(dev);
1393 }
1394 spin_unlock_irqrestore(&this->lock, flags);
1395 return rc;
1396}
1397
1398static int wl3501_open(struct net_device *dev)
1399{
1400 int rc = -ENODEV;
1401 struct wl3501_card *this = dev->priv;
1402 unsigned long flags;
1403 dev_link_t *link;
1404
1405 spin_lock_irqsave(&this->lock, flags);
1406 /* Check if the device is in wl3501_dev_list */
1407 for (link = wl3501_dev_list; link; link = link->next)
1408 if (link->priv == dev)
1409 break;
1410 if (!DEV_OK(link))
1411 goto out;
1412 netif_device_attach(dev);
1413 link->open++;
1414
1415 /* Initial WL3501 firmware */
1416 dprintk(1, "%s: Initialize WL3501 firmware...", dev->name);
1417 if (wl3501_init_firmware(this))
1418 goto fail;
1419 /* Initial device variables */
1420 this->adhoc_times = 0;
1421 /* Acknowledge Interrupt, for cleaning last state */
1422 wl3501_ack_interrupt(this);
1423
1424 /* Enable interrupt from card after all */
1425 wl3501_unblock_interrupt(this);
1426 wl3501_mgmt_scan(this, 100);
1427 rc = 0;
1428 dprintk(1, "%s: WL3501 opened", dev->name);
1429 printk(KERN_INFO "%s: Card Name: %s\n"
1430 "%s: Firmware Date: %s\n",
1431 dev->name, this->card_name,
1432 dev->name, this->firmware_date);
1433out:
1434 spin_unlock_irqrestore(&this->lock, flags);
1435 return rc;
1436fail:
1437 printk(KERN_WARNING "%s: Can't initialize firmware!\n", dev->name);
1438 goto out;
1439}
1440
1441struct net_device_stats *wl3501_get_stats(struct net_device *dev)
1442{
1443 struct wl3501_card *this = dev->priv;
1444
1445 return &this->stats;
1446}
1447
1448struct iw_statistics *wl3501_get_wireless_stats(struct net_device *dev)
1449{
1450 struct wl3501_card *this = dev->priv;
1451 struct iw_statistics *wstats = &this->wstats;
1452 u32 value; /* size checked: it is u32 */
1453
1454 memset(wstats, 0, sizeof(*wstats));
1455 wstats->status = netif_running(dev);
1456 if (!wl3501_get_mib_value(this, WL3501_MIB_ATTR_WEP_ICV_ERROR_COUNT,
1457 &value, sizeof(value)))
1458 wstats->discard.code += value;
1459 if (!wl3501_get_mib_value(this, WL3501_MIB_ATTR_WEP_UNDECRYPTABLE_COUNT,
1460 &value, sizeof(value)))
1461 wstats->discard.code += value;
1462 if (!wl3501_get_mib_value(this, WL3501_MIB_ATTR_WEP_EXCLUDED_COUNT,
1463 &value, sizeof(value)))
1464 wstats->discard.code += value;
1465 if (!wl3501_get_mib_value(this, WL3501_MIB_ATTR_RETRY_COUNT,
1466 &value, sizeof(value)))
1467 wstats->discard.retries = value;
1468 if (!wl3501_get_mib_value(this, WL3501_MIB_ATTR_FAILED_COUNT,
1469 &value, sizeof(value)))
1470 wstats->discard.misc += value;
1471 if (!wl3501_get_mib_value(this, WL3501_MIB_ATTR_RTS_FAILURE_COUNT,
1472 &value, sizeof(value)))
1473 wstats->discard.misc += value;
1474 if (!wl3501_get_mib_value(this, WL3501_MIB_ATTR_ACK_FAILURE_COUNT,
1475 &value, sizeof(value)))
1476 wstats->discard.misc += value;
1477 if (!wl3501_get_mib_value(this, WL3501_MIB_ATTR_FRAME_DUPLICATE_COUNT,
1478 &value, sizeof(value)))
1479 wstats->discard.misc += value;
1480 return wstats;
1481}
1482
1483static void wl3501_get_drvinfo(struct net_device *dev, struct ethtool_drvinfo *info)
1484{
1485 strlcpy(info->driver, wl3501_dev_info, sizeof(info->driver));
1486}
1487
1488static struct ethtool_ops ops = {
1489 .get_drvinfo = wl3501_get_drvinfo
1490};
1491
1492/**
1493 * wl3501_detach - deletes a driver "instance"
1494 * @link - FILL_IN
1495 *
1496 * This deletes a driver "instance". The device is de-registered with Card
1497 * Services. If it has been released, all local data structures are freed.
1498 * Otherwise, the structures will be freed when the device is released.
1499 */
1500static void wl3501_detach(dev_link_t *link)
1501{
1502 dev_link_t **linkp;
1503
1504 /* Locate device structure */
1505 for (linkp = &wl3501_dev_list; *linkp; linkp = &(*linkp)->next)
1506 if (*linkp == link)
1507 break;
1508 if (!*linkp)
1509 goto out;
1510
1511 /* If the device is currently configured and active, we won't actually
1512 * delete it yet. Instead, it is marked so that when the release()
1513 * function is called, that will trigger a proper detach(). */
1514
1515 if (link->state & DEV_CONFIG) {
1516#ifdef PCMCIA_DEBUG
1517 printk(KERN_DEBUG "wl3501_cs: detach postponed, '%s' "
1518 "still locked\n", link->dev->dev_name);
1519#endif
1520 goto out;
1521 }
1522
1523 /* Break the link with Card Services */
1524 if (link->handle)
1525 pcmcia_deregister_client(link->handle);
1526
1527 /* Unlink device structure, free pieces */
1528 *linkp = link->next;
1529
1530 if (link->priv)
1531 free_netdev(link->priv);
1532 kfree(link);
1533out:
1534 return;
1535}
1536
1537static int wl3501_get_name(struct net_device *dev, struct iw_request_info *info,
1538 union iwreq_data *wrqu, char *extra)
1539{
1540 strlcpy(wrqu->name, "IEEE 802.11-DS", sizeof(wrqu->name));
1541 return 0;
1542}
1543
1544static int wl3501_set_freq(struct net_device *dev, struct iw_request_info *info,
1545 union iwreq_data *wrqu, char *extra)
1546{
1547 struct wl3501_card *this = dev->priv;
1548 int channel = wrqu->freq.m;
1549 int rc = -EINVAL;
1550
1551 if (iw_valid_channel(this->reg_domain, channel)) {
1552 this->chan = channel;
1553 rc = wl3501_reset(dev);
1554 }
1555 return rc;
1556}
1557
1558static int wl3501_get_freq(struct net_device *dev, struct iw_request_info *info,
1559 union iwreq_data *wrqu, char *extra)
1560{
1561 struct wl3501_card *this = dev->priv;
1562
1563 wrqu->freq.m = wl3501_chan2freq[this->chan - 1] * 100000;
1564 wrqu->freq.e = 1;
1565 return 0;
1566}
1567
1568static int wl3501_set_mode(struct net_device *dev, struct iw_request_info *info,
1569 union iwreq_data *wrqu, char *extra)
1570{
1571 int rc = -EINVAL;
1572
1573 if (wrqu->mode == IW_MODE_INFRA ||
1574 wrqu->mode == IW_MODE_ADHOC ||
1575 wrqu->mode == IW_MODE_AUTO) {
1576 struct wl3501_card *this = dev->priv;
1577
1578 this->net_type = wrqu->mode;
1579 rc = wl3501_reset(dev);
1580 }
1581 return rc;
1582}
1583
1584static int wl3501_get_mode(struct net_device *dev, struct iw_request_info *info,
1585 union iwreq_data *wrqu, char *extra)
1586{
1587 struct wl3501_card *this = dev->priv;
1588
1589 wrqu->mode = this->net_type;
1590 return 0;
1591}
1592
1593static int wl3501_get_sens(struct net_device *dev, struct iw_request_info *info,
1594 union iwreq_data *wrqu, char *extra)
1595{
1596 struct wl3501_card *this = dev->priv;
1597
1598 wrqu->sens.value = this->rssi;
1599 wrqu->sens.disabled = !wrqu->sens.value;
1600 wrqu->sens.fixed = 1;
1601 return 0;
1602}
1603
1604static int wl3501_get_range(struct net_device *dev,
1605 struct iw_request_info *info,
1606 union iwreq_data *wrqu, char *extra)
1607{
1608 struct iw_range *range = (struct iw_range *)extra;
1609
1610 /* Set the length (very important for backward compatibility) */
1611 wrqu->data.length = sizeof(*range);
1612
1613 /* Set all the info we don't care or don't know about to zero */
1614 memset(range, 0, sizeof(*range));
1615
1616 /* Set the Wireless Extension versions */
1617 range->we_version_compiled = WIRELESS_EXT;
1618 range->we_version_source = 1;
1619 range->throughput = 2 * 1000 * 1000; /* ~2 Mb/s */
1620 /* FIXME: study the code to fill in more fields... */
1621 return 0;
1622}
1623
1624static int wl3501_set_wap(struct net_device *dev, struct iw_request_info *info,
1625 union iwreq_data *wrqu, char *extra)
1626{
1627 struct wl3501_card *this = dev->priv;
1628 static const u8 bcast[ETH_ALEN] = { 255, 255, 255, 255, 255, 255 };
1629 int rc = -EINVAL;
1630
1631 /* FIXME: we support other ARPHRDs...*/
1632 if (wrqu->ap_addr.sa_family != ARPHRD_ETHER)
1633 goto out;
1634 if (!memcmp(bcast, wrqu->ap_addr.sa_data, ETH_ALEN)) {
1635 /* FIXME: rescan? */
1636 } else
1637 memcpy(this->bssid, wrqu->ap_addr.sa_data, ETH_ALEN);
1638 /* FIXME: rescan? deassoc & scan? */
1639 rc = 0;
1640out:
1641 return rc;
1642}
1643
1644static int wl3501_get_wap(struct net_device *dev, struct iw_request_info *info,
1645 union iwreq_data *wrqu, char *extra)
1646{
1647 struct wl3501_card *this = dev->priv;
1648
1649 wrqu->ap_addr.sa_family = ARPHRD_ETHER;
1650 memcpy(wrqu->ap_addr.sa_data, this->bssid, ETH_ALEN);
1651 return 0;
1652}
1653
1654static int wl3501_set_scan(struct net_device *dev, struct iw_request_info *info,
1655 union iwreq_data *wrqu, char *extra)
1656{
1657 /*
1658 * FIXME: trigger scanning with a reset, yes, I'm lazy
1659 */
1660 return wl3501_reset(dev);
1661}
1662
1663static int wl3501_get_scan(struct net_device *dev, struct iw_request_info *info,
1664 union iwreq_data *wrqu, char *extra)
1665{
1666 struct wl3501_card *this = dev->priv;
1667 int i;
1668 char *current_ev = extra;
1669 struct iw_event iwe;
1670
1671 for (i = 0; i < this->bss_cnt; ++i) {
1672 iwe.cmd = SIOCGIWAP;
1673 iwe.u.ap_addr.sa_family = ARPHRD_ETHER;
1674 memcpy(iwe.u.ap_addr.sa_data, this->bss_set[i].bssid, ETH_ALEN);
1675 current_ev = iwe_stream_add_event(current_ev,
1676 extra + IW_SCAN_MAX_DATA,
1677 &iwe, IW_EV_ADDR_LEN);
1678 iwe.cmd = SIOCGIWESSID;
1679 iwe.u.data.flags = 1;
1680 iwe.u.data.length = this->bss_set[i].ssid.el.len;
1681 current_ev = iwe_stream_add_point(current_ev,
1682 extra + IW_SCAN_MAX_DATA,
1683 &iwe,
1684 this->bss_set[i].ssid.essid);
1685 iwe.cmd = SIOCGIWMODE;
1686 iwe.u.mode = this->bss_set[i].bss_type;
1687 current_ev = iwe_stream_add_event(current_ev,
1688 extra + IW_SCAN_MAX_DATA,
1689 &iwe, IW_EV_UINT_LEN);
1690 iwe.cmd = SIOCGIWFREQ;
1691 iwe.u.freq.m = this->bss_set[i].ds_pset.chan;
1692 iwe.u.freq.e = 0;
1693 current_ev = iwe_stream_add_event(current_ev,
1694 extra + IW_SCAN_MAX_DATA,
1695 &iwe, IW_EV_FREQ_LEN);
1696 iwe.cmd = SIOCGIWENCODE;
1697 if (this->bss_set[i].cap_info & WL3501_MGMT_CAPABILITY_PRIVACY)
1698 iwe.u.data.flags = IW_ENCODE_ENABLED | IW_ENCODE_NOKEY;
1699 else
1700 iwe.u.data.flags = IW_ENCODE_DISABLED;
1701 iwe.u.data.length = 0;
1702 current_ev = iwe_stream_add_point(current_ev,
1703 extra + IW_SCAN_MAX_DATA,
1704 &iwe, NULL);
1705 }
1706 /* Length of data */
1707 wrqu->data.length = (current_ev - extra);
1708 wrqu->data.flags = 0; /* FIXME: set properly these flags */
1709 return 0;
1710}
1711
1712static int wl3501_set_essid(struct net_device *dev,
1713 struct iw_request_info *info,
1714 union iwreq_data *wrqu, char *extra)
1715{
1716 struct wl3501_card *this = dev->priv;
1717
1718 if (wrqu->data.flags) {
1719 iw_set_mgmt_info_element(IW_MGMT_INFO_ELEMENT_SSID,
1720 &this->essid.el,
1721 extra, wrqu->data.length);
1722 } else { /* We accept any ESSID */
1723 iw_set_mgmt_info_element(IW_MGMT_INFO_ELEMENT_SSID,
1724 &this->essid.el, "ANY", 3);
1725 }
1726 return wl3501_reset(dev);
1727}
1728
1729static int wl3501_get_essid(struct net_device *dev,
1730 struct iw_request_info *info,
1731 union iwreq_data *wrqu, char *extra)
1732{
1733 struct wl3501_card *this = dev->priv;
1734 unsigned long flags;
1735
1736 spin_lock_irqsave(&this->lock, flags);
1737 wrqu->essid.flags = 1;
1738 wrqu->essid.length = this->essid.el.len;
1739 memcpy(extra, this->essid.essid, this->essid.el.len);
1740 spin_unlock_irqrestore(&this->lock, flags);
1741 return 0;
1742}
1743
1744static int wl3501_set_nick(struct net_device *dev, struct iw_request_info *info,
1745 union iwreq_data *wrqu, char *extra)
1746{
1747 struct wl3501_card *this = dev->priv;
1748
1749 if (wrqu->data.length > sizeof(this->nick))
1750 return -E2BIG;
1751 strlcpy(this->nick, extra, wrqu->data.length);
1752 return 0;
1753}
1754
1755static int wl3501_get_nick(struct net_device *dev, struct iw_request_info *info,
1756 union iwreq_data *wrqu, char *extra)
1757{
1758 struct wl3501_card *this = dev->priv;
1759
1760 strlcpy(extra, this->nick, 32);
1761 wrqu->data.length = strlen(extra);
1762 return 0;
1763}
1764
1765static int wl3501_get_rate(struct net_device *dev, struct iw_request_info *info,
1766 union iwreq_data *wrqu, char *extra)
1767{
1768 /*
1769 * FIXME: have to see from where to get this info, perhaps this card
1770 * works at 1 Mbit/s too... for now leave at 2 Mbit/s that is the most
1771 * common with the Planet Access Points. -acme
1772 */
1773 wrqu->bitrate.value = 2000000;
1774 wrqu->bitrate.fixed = 1;
1775 return 0;
1776}
1777
1778static int wl3501_get_rts_threshold(struct net_device *dev,
1779 struct iw_request_info *info,
1780 union iwreq_data *wrqu, char *extra)
1781{
1782 u16 threshold; /* size checked: it is u16 */
1783 struct wl3501_card *this = dev->priv;
1784 int rc = wl3501_get_mib_value(this, WL3501_MIB_ATTR_RTS_THRESHOLD,
1785 &threshold, sizeof(threshold));
1786 if (!rc) {
1787 wrqu->rts.value = threshold;
1788 wrqu->rts.disabled = threshold >= 2347;
1789 wrqu->rts.fixed = 1;
1790 }
1791 return rc;
1792}
1793
1794static int wl3501_get_frag_threshold(struct net_device *dev,
1795 struct iw_request_info *info,
1796 union iwreq_data *wrqu, char *extra)
1797{
1798 u16 threshold; /* size checked: it is u16 */
1799 struct wl3501_card *this = dev->priv;
1800 int rc = wl3501_get_mib_value(this, WL3501_MIB_ATTR_FRAG_THRESHOLD,
1801 &threshold, sizeof(threshold));
1802 if (!rc) {
1803 wrqu->frag.value = threshold;
1804 wrqu->frag.disabled = threshold >= 2346;
1805 wrqu->frag.fixed = 1;
1806 }
1807 return rc;
1808}
1809
1810static int wl3501_get_txpow(struct net_device *dev,
1811 struct iw_request_info *info,
1812 union iwreq_data *wrqu, char *extra)
1813{
1814 u16 txpow;
1815 struct wl3501_card *this = dev->priv;
1816 int rc = wl3501_get_mib_value(this,
1817 WL3501_MIB_ATTR_CURRENT_TX_PWR_LEVEL,
1818 &txpow, sizeof(txpow));
1819 if (!rc) {
1820 wrqu->txpower.value = txpow;
1821 wrqu->txpower.disabled = 0;
1822 /*
1823 * From the MIB values I think this can be configurable,
1824 * as it lists several tx power levels -acme
1825 */
1826 wrqu->txpower.fixed = 0;
1827 wrqu->txpower.flags = IW_TXPOW_MWATT;
1828 }
1829 return rc;
1830}
1831
1832static int wl3501_get_retry(struct net_device *dev,
1833 struct iw_request_info *info,
1834 union iwreq_data *wrqu, char *extra)
1835{
1836 u8 retry; /* size checked: it is u8 */
1837 struct wl3501_card *this = dev->priv;
1838 int rc = wl3501_get_mib_value(this,
1839 WL3501_MIB_ATTR_LONG_RETRY_LIMIT,
1840 &retry, sizeof(retry));
1841 if (rc)
1842 goto out;
1843 if (wrqu->retry.flags & IW_RETRY_MAX) {
1844 wrqu->retry.flags = IW_RETRY_LIMIT | IW_RETRY_MAX;
1845 goto set_value;
1846 }
1847 rc = wl3501_get_mib_value(this, WL3501_MIB_ATTR_SHORT_RETRY_LIMIT,
1848 &retry, sizeof(retry));
1849 if (rc)
1850 goto out;
1851 wrqu->retry.flags = IW_RETRY_LIMIT | IW_RETRY_MIN;
1852set_value:
1853 wrqu->retry.value = retry;
1854 wrqu->retry.disabled = 0;
1855out:
1856 return rc;
1857}
1858
1859static int wl3501_get_encode(struct net_device *dev,
1860 struct iw_request_info *info,
1861 union iwreq_data *wrqu, char *extra)
1862{
1863 u8 implemented, restricted, keys[100], len_keys, tocopy;
1864 struct wl3501_card *this = dev->priv;
1865 int rc = wl3501_get_mib_value(this,
1866 WL3501_MIB_ATTR_PRIV_OPT_IMPLEMENTED,
1867 &implemented, sizeof(implemented));
1868 if (rc)
1869 goto out;
1870 if (!implemented) {
1871 wrqu->encoding.flags = IW_ENCODE_DISABLED;
1872 goto out;
1873 }
1874 rc = wl3501_get_mib_value(this, WL3501_MIB_ATTR_EXCLUDE_UNENCRYPTED,
1875 &restricted, sizeof(restricted));
1876 if (rc)
1877 goto out;
1878 wrqu->encoding.flags = restricted ? IW_ENCODE_RESTRICTED :
1879 IW_ENCODE_OPEN;
1880 rc = wl3501_get_mib_value(this, WL3501_MIB_ATTR_WEP_KEY_MAPPINGS_LEN,
1881 &len_keys, sizeof(len_keys));
1882 if (rc)
1883 goto out;
1884 rc = wl3501_get_mib_value(this, WL3501_MIB_ATTR_WEP_KEY_MAPPINGS,
1885 keys, len_keys);
1886 if (rc)
1887 goto out;
1888 tocopy = min_t(u8, len_keys, wrqu->encoding.length);
1889 tocopy = min_t(u8, tocopy, 100);
1890 wrqu->encoding.length = tocopy;
1891 memset(extra, 0, tocopy);
1892 memcpy(extra, keys, tocopy);
1893out:
1894 return rc;
1895}
1896
1897static int wl3501_get_power(struct net_device *dev,
1898 struct iw_request_info *info,
1899 union iwreq_data *wrqu, char *extra)
1900{
1901 u8 pwr_state;
1902 struct wl3501_card *this = dev->priv;
1903 int rc = wl3501_get_mib_value(this,
1904 WL3501_MIB_ATTR_CURRENT_PWR_STATE,
1905 &pwr_state, sizeof(pwr_state));
1906 if (rc)
1907 goto out;
1908 wrqu->power.disabled = !pwr_state;
1909 wrqu->power.flags = IW_POWER_ON;
1910out:
1911 return rc;
1912}
1913
1914static const iw_handler wl3501_handler[] = {
1915 [SIOCGIWNAME - SIOCIWFIRST] = wl3501_get_name,
1916 [SIOCSIWFREQ - SIOCIWFIRST] = wl3501_set_freq,
1917 [SIOCGIWFREQ - SIOCIWFIRST] = wl3501_get_freq,
1918 [SIOCSIWMODE - SIOCIWFIRST] = wl3501_set_mode,
1919 [SIOCGIWMODE - SIOCIWFIRST] = wl3501_get_mode,
1920 [SIOCGIWSENS - SIOCIWFIRST] = wl3501_get_sens,
1921 [SIOCGIWRANGE - SIOCIWFIRST] = wl3501_get_range,
1922 [SIOCSIWSPY - SIOCIWFIRST] = iw_handler_set_spy,
1923 [SIOCGIWSPY - SIOCIWFIRST] = iw_handler_get_spy,
1924 [SIOCSIWTHRSPY - SIOCIWFIRST] = iw_handler_set_thrspy,
1925 [SIOCGIWTHRSPY - SIOCIWFIRST] = iw_handler_get_thrspy,
1926 [SIOCSIWAP - SIOCIWFIRST] = wl3501_set_wap,
1927 [SIOCGIWAP - SIOCIWFIRST] = wl3501_get_wap,
1928 [SIOCSIWSCAN - SIOCIWFIRST] = wl3501_set_scan,
1929 [SIOCGIWSCAN - SIOCIWFIRST] = wl3501_get_scan,
1930 [SIOCSIWESSID - SIOCIWFIRST] = wl3501_set_essid,
1931 [SIOCGIWESSID - SIOCIWFIRST] = wl3501_get_essid,
1932 [SIOCSIWNICKN - SIOCIWFIRST] = wl3501_set_nick,
1933 [SIOCGIWNICKN - SIOCIWFIRST] = wl3501_get_nick,
1934 [SIOCGIWRATE - SIOCIWFIRST] = wl3501_get_rate,
1935 [SIOCGIWRTS - SIOCIWFIRST] = wl3501_get_rts_threshold,
1936 [SIOCGIWFRAG - SIOCIWFIRST] = wl3501_get_frag_threshold,
1937 [SIOCGIWTXPOW - SIOCIWFIRST] = wl3501_get_txpow,
1938 [SIOCGIWRETRY - SIOCIWFIRST] = wl3501_get_retry,
1939 [SIOCGIWENCODE - SIOCIWFIRST] = wl3501_get_encode,
1940 [SIOCGIWPOWER - SIOCIWFIRST] = wl3501_get_power,
1941};
1942
1943static const struct iw_handler_def wl3501_handler_def = {
1944 .num_standard = sizeof(wl3501_handler) / sizeof(iw_handler),
1945 .standard = (iw_handler *)wl3501_handler,
1946 .spy_offset = offsetof(struct wl3501_card, spy_data),
1947};
1948
1949/**
1950 * wl3501_attach - creates an "instance" of the driver
1951 *
1952 * Creates an "instance" of the driver, allocating local data structures for
1953 * one device. The device is registered with Card Services.
1954 *
1955 * The dev_link structure is initialized, but we don't actually configure the
1956 * card at this point -- we wait until we receive a card insertion event.
1957 */
1958static dev_link_t *wl3501_attach(void)
1959{
1960 client_reg_t client_reg;
1961 dev_link_t *link;
1962 struct net_device *dev;
1963 int ret;
1964
1965 /* Initialize the dev_link_t structure */
1966 link = kmalloc(sizeof(*link), GFP_KERNEL);
1967 if (!link)
1968 goto out;
1969 memset(link, 0, sizeof(struct dev_link_t));
1970
1971 /* The io structure describes IO port mapping */
1972 link->io.NumPorts1 = 16;
1973 link->io.Attributes1 = IO_DATA_PATH_WIDTH_8;
1974 link->io.IOAddrLines = 5;
1975
1976 /* Interrupt setup */
1977 link->irq.Attributes = IRQ_TYPE_EXCLUSIVE | IRQ_HANDLE_PRESENT;
1978 link->irq.IRQInfo1 = IRQ_LEVEL_ID;
1979 link->irq.Handler = wl3501_interrupt;
1980
1981 /* General socket configuration */
1982 link->conf.Attributes = CONF_ENABLE_IRQ;
1983 link->conf.Vcc = 50;
1984 link->conf.IntType = INT_MEMORY_AND_IO;
1985 link->conf.ConfigIndex = 1;
1986 link->conf.Present = PRESENT_OPTION;
1987
1988 dev = alloc_etherdev(sizeof(struct wl3501_card));
1989 if (!dev)
1990 goto out_link;
1991 dev->open = wl3501_open;
1992 dev->stop = wl3501_close;
1993 dev->hard_start_xmit = wl3501_hard_start_xmit;
1994 dev->tx_timeout = wl3501_tx_timeout;
1995 dev->watchdog_timeo = 5 * HZ;
1996 dev->get_stats = wl3501_get_stats;
1997 dev->get_wireless_stats = wl3501_get_wireless_stats;
1998 dev->wireless_handlers = (struct iw_handler_def *)&wl3501_handler_def;
1999 SET_ETHTOOL_OPS(dev, &ops);
2000 netif_stop_queue(dev);
2001 link->priv = link->irq.Instance = dev;
2002
2003 /* Register with Card Services */
2004 link->next = wl3501_dev_list;
2005 wl3501_dev_list = link;
2006 client_reg.dev_info = &wl3501_dev_info;
1da177e4
LT		 2007 client_reg.Version = 0x0210;
2008 client_reg.event_callback_args.client_data = link;
2009 ret = pcmcia_register_client(&link->handle, &client_reg);
2010 if (ret) {
2011 cs_error(link->handle, RegisterClient, ret);
2012 wl3501_detach(link);
2013 link = NULL;
2014 }
2015out:
2016 return link;
2017out_link:
2018 kfree(link);
2019 link = NULL;
2020 goto out;
2021}
2022
2023#define CS_CHECK(fn, ret) \
2024do { last_fn = (fn); if ((last_ret = (ret)) != 0) goto cs_failed; } while (0)
2025
2026/**
2027 * wl3501_config - configure the PCMCIA socket and make eth device available
2028 * @link - FILL_IN
2029 *
2030 * wl3501_config() is scheduled to run after a CARD_INSERTION event is
2031 * received, to configure the PCMCIA socket, and to make the ethernet device
2032 * available to the system.
2033 */
2034static void wl3501_config(dev_link_t *link)
2035{
2036 tuple_t tuple;
2037 cisparse_t parse;
2038 client_handle_t handle = link->handle;
2039 struct net_device *dev = link->priv;
2040 int i = 0, j, last_fn, last_ret;
2041 unsigned char bf[64];
2042 struct wl3501_card *this;
2043
2044 /* This reads the card's CONFIG tuple to find its config registers. */
2045 tuple.Attributes = 0;
2046 tuple.DesiredTuple = CISTPL_CONFIG;
2047 CS_CHECK(GetFirstTuple, pcmcia_get_first_tuple(handle, &tuple));
2048 tuple.TupleData = bf;
2049 tuple.TupleDataMax = sizeof(bf);
2050 tuple.TupleOffset = 0;
2051 CS_CHECK(GetTupleData, pcmcia_get_tuple_data(handle, &tuple));
2052 CS_CHECK(ParseTuple, pcmcia_parse_tuple(handle, &tuple, &parse));
2053 link->conf.ConfigBase = parse.config.base;
2054 link->conf.Present = parse.config.rmask[0];
2055
2056 /* Configure card */
2057 link->state |= DEV_CONFIG;
2058
2059 /* Try allocating IO ports. This tries a few fixed addresses. If you
2060 * want, you can also read the card's config table to pick addresses --
2061 * see the serial driver for an example. */
2062
2063 for (j = 0x280; j < 0x400; j += 0x20) {
2064 /* The '^0x300' is so that we probe 0x300-0x3ff first, then
2065 * 0x200-0x2ff, and so on, because this seems safer */
2066 link->io.BasePort1 = j;
2067 link->io.BasePort2 = link->io.BasePort1 + 0x10;
2068 i = pcmcia_request_io(link->handle, &link->io);
2069 if (i == CS_SUCCESS)
2070 break;
2071 }
2072 if (i != CS_SUCCESS) {
2073 cs_error(link->handle, RequestIO, i);
2074 goto failed;
2075 }
2076
2077 /* Now allocate an interrupt line. Note that this does not actually
2078 * assign a handler to the interrupt. */
2079
2080 CS_CHECK(RequestIRQ, pcmcia_request_irq(link->handle, &link->irq));
2081
2082 /* This actually configures the PCMCIA socket -- setting up the I/O
2083 * windows and the interrupt mapping. */
2084
2085 CS_CHECK(RequestConfiguration, pcmcia_request_configuration(link->handle, &link->conf));
2086
2087 dev->irq = link->irq.AssignedIRQ;
2088 dev->base_addr = link->io.BasePort1;
2089 SET_NETDEV_DEV(dev, &handle_to_dev(handle));
2090 if (register_netdev(dev)) {
2091 printk(KERN_NOTICE "wl3501_cs: register_netdev() failed\n");
2092 goto failed;
2093 }
2094
2095 SET_MODULE_OWNER(dev);
2096
2097 this = dev->priv;
2098 /*
2099 * At this point, the dev_node_t structure(s) should be initialized and
2100 * arranged in a linked list at link->dev.
2101 */
2102 link->dev = &this->node;
2103 link->state &= ~DEV_CONFIG_PENDING;
2104
2105 this->base_addr = dev->base_addr;
2106
2107 if (!wl3501_get_flash_mac_addr(this)) {
2108 printk(KERN_WARNING "%s: Cant read MAC addr in flash ROM?\n",
2109 dev->name);
2110 goto failed;
2111 }
2112 strcpy(this->node.dev_name, dev->name);
2113
2114 /* print probe information */
2115 printk(KERN_INFO "%s: wl3501 @ 0x%3.3x, IRQ %d, MAC addr in flash ROM:",
2116 dev->name, this->base_addr, (int)dev->irq);
2117 for (i = 0; i < 6; i++) {
2118 dev->dev_addr[i] = ((char *)&this->mac_addr)[i];
2119 printk("%c%02x", i ? ':' : ' ', dev->dev_addr[i]);
2120 }
2121 printk("\n");
2122 /*
2123 * Initialize card parameters - added by jss
2124 */
2125 this->net_type = IW_MODE_INFRA;
2126 this->bss_cnt = 0;
2127 this->join_sta_bss = 0;
2128 this->adhoc_times = 0;
2129 iw_set_mgmt_info_element(IW_MGMT_INFO_ELEMENT_SSID, &this->essid.el,
2130 "ANY", 3);
2131 this->card_name[0] = '\0';
2132 this->firmware_date[0] = '\0';
2133 this->rssi = 255;
2134 this->chan = iw_default_channel(this->reg_domain);
2135 strlcpy(this->nick, "Planet WL3501", sizeof(this->nick));
2136 spin_lock_init(&this->lock);
2137 init_waitqueue_head(&this->wait);
2138 netif_start_queue(dev);
2139 goto out;
2140cs_failed:
2141 cs_error(link->handle, last_fn, last_ret);
2142failed:
2143 wl3501_release(link);
2144out:
2145 return;
2146}
2147
2148/**
2149 * wl3501_release - unregister the net, release PCMCIA configuration
2150 * @arg - link
2151 *
2152 * After a card is removed, wl3501_release() will unregister the net device,
2153 * and release the PCMCIA configuration. If the device is still open, this
2154 * will be postponed until it is closed.
2155 */
2156static void wl3501_release(dev_link_t *link)
2157{
2158 struct net_device *dev = link->priv;
2159
2160 /* Unlink the device chain */
2161 if (link->dev) {
2162 unregister_netdev(dev);
2163 link->dev = NULL;
2164 }
2165
2166 /* Don't bother checking to see if these succeed or not */
2167 pcmcia_release_configuration(link->handle);
2168 pcmcia_release_io(link->handle, &link->io);
2169 pcmcia_release_irq(link->handle, &link->irq);
2170 link->state &= ~DEV_CONFIG;
2171}
2172
2173/**
2174 * wl3501_event - The card status event handler
2175 * @event - event
2176 * @pri - priority
2177 * @args - arguments for this event
2178 *
2179 * The card status event handler. Mostly, this schedules other stuff to run
2180 * after an event is received. A CARD_REMOVAL event also sets some flags to
2181 * discourage the net drivers from trying to talk to the card any more.
2182 *
2183 * When a CARD_REMOVAL event is received, we immediately set a flag to block
2184 * future accesses to this device. All the functions that actually access the
2185 * device should check this flag to make sure the card is still present.
2186 */
2187static int wl3501_event(event_t event, int pri, event_callback_args_t *args)
2188{
2189 dev_link_t *link = args->client_data;
2190 struct net_device *dev = link->priv;
2191
2192 switch (event) {
2193 case CS_EVENT_CARD_REMOVAL:
2194 link->state &= ~DEV_PRESENT;
2195 if (link->state & DEV_CONFIG) {
2196 while (link->open > 0)
2197 wl3501_close(dev);
2198 netif_device_detach(dev);
2199 wl3501_release(link);
2200 }
2201 break;
2202 case CS_EVENT_CARD_INSERTION:
2203 link->state |= DEV_PRESENT | DEV_CONFIG_PENDING;
2204 wl3501_config(link);
2205 break;
2206 case CS_EVENT_PM_SUSPEND:
2207 link->state |= DEV_SUSPEND;
2208 wl3501_pwr_mgmt(dev->priv, WL3501_SUSPEND);
2209 /* Fall through... */
2210 case CS_EVENT_RESET_PHYSICAL:
2211 if (link->state & DEV_CONFIG) {
2212 if (link->open)
2213 netif_device_detach(dev);
2214 pcmcia_release_configuration(link->handle);
2215 }
2216 break;
2217 case CS_EVENT_PM_RESUME:
2218 link->state &= ~DEV_SUSPEND;
2219 wl3501_pwr_mgmt(dev->priv, WL3501_RESUME);
2220 /* Fall through... */
2221 case CS_EVENT_CARD_RESET:
2222 if (link->state & DEV_CONFIG) {
2223 pcmcia_request_configuration(link->handle, &link->conf);
2224 if (link->open) {
2225 wl3501_reset(dev);
2226 netif_device_attach(dev);
2227 }
2228 }
2229 break;
2230 }
2231 return 0;
2232}
2233
77b73f9b
DB		 2234static struct pcmcia_device_id wl3501_ids[] = {
2235 PCMCIA_DEVICE_MANF_CARD(0xd601, 0x0001),
2236 PCMCIA_DEVICE_NULL
2237};
2238MODULE_DEVICE_TABLE(pcmcia, wl3501_ids);
2239
1da177e4 2240static struct pcmcia_driver wl3501_driver = {
1e212f36
DB		 2241 .owner = THIS_MODULE,
2242 .drv = {
2243 .name = "wl3501_cs",
1da177e4 2244 },
1e212f36
DB		 2245 .attach = wl3501_attach,
2246 .event = wl3501_event,
2247 .detach = wl3501_detach,
77b73f9b 2248 .id_table = wl3501_ids,
1da177e4
LT		 2249};
2250
2251static int __init wl3501_init_module(void)
2252{
2253 return pcmcia_register_driver(&wl3501_driver);
2254}
2255
2256static void __exit wl3501_exit_module(void)
2257{
2258 dprintk(0, ": unloading");
2259 pcmcia_unregister_driver(&wl3501_driver);
2260 BUG_ON(wl3501_dev_list != NULL);
2261}
2262
2263module_init(wl3501_init_module);
2264module_exit(wl3501_exit_module);
2265
2266MODULE_AUTHOR("Fox Chen <mhchen@golf.ccl.itri.org.tw>, "
2267 "Arnaldo Carvalho de Melo <acme@conectiva.com.br>,"
2268 "Gustavo Niemeyer <niemeyer@conectiva.com>");
2269MODULE_DESCRIPTION("Planet wl3501 wireless driver");
2270MODULE_LICENSE("GPL");
Linux kernel - Deliverables
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