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latent_entropy: Mark functions with __latent_entropy
[deliverable/linux.git] / drivers / net / wireless / wl3501_cs.c
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
30 #include <linux/delay.h>
31 #include <linux/types.h>
32 #include <linux/interrupt.h>
33 #include <linux/in.h>
34 #include <linux/kernel.h>
35 #include <linux/module.h>
36 #include <linux/fcntl.h>
37 #include <linux/if_arp.h>
38 #include <linux/ioport.h>
39 #include <linux/netdevice.h>
40 #include <linux/etherdevice.h>
41 #include <linux/skbuff.h>
42 #include <linux/slab.h>
43 #include <linux/string.h>
44 #include <linux/wireless.h>
45 #include <net/cfg80211.h>
46
47 #include <net/iw_handler.h>
48
49 #include <pcmcia/cistpl.h>
50 #include <pcmcia/cisreg.h>
51 #include <pcmcia/ds.h>
52
53 #include <asm/io.h>
54 #include <asm/uaccess.h>
55
56 #include "wl3501.h"
57
58 #ifndef __i386__
59 #define slow_down_io()
60 #endif
61
62 /* For rough constant delay */
63 #define WL3501_NOPLOOP(n) { int x = 0; while (x++ < n) slow_down_io(); }
64
65
66
67 #define wl3501_outb(a, b) { outb(a, b); slow_down_io(); }
68 #define wl3501_outb_p(a, b) { outb_p(a, b); slow_down_io(); }
69 #define wl3501_outsb(a, b, c) { outsb(a, b, c); slow_down_io(); }
70
71 #define WL3501_RELEASE_TIMEOUT (25 * HZ)
72 #define WL3501_MAX_ADHOC_TRIES 16
73
74 #define WL3501_RESUME 0
75 #define WL3501_SUSPEND 1
76
77 static int wl3501_config(struct pcmcia_device *link);
78 static void wl3501_release(struct pcmcia_device *link);
79
80 static const struct {
81 int reg_domain;
82 int min, max, deflt;
83 } iw_channel_table[] = {
84 {
85 .reg_domain = IW_REG_DOMAIN_FCC,
86 .min = 1,
87 .max = 11,
88 .deflt = 1,
89 },
90 {
91 .reg_domain = IW_REG_DOMAIN_DOC,
92 .min = 1,
93 .max = 11,
94 .deflt = 1,
95 },
96 {
97 .reg_domain = IW_REG_DOMAIN_ETSI,
98 .min = 1,
99 .max = 13,
100 .deflt = 1,
101 },
102 {
103 .reg_domain = IW_REG_DOMAIN_SPAIN,
104 .min = 10,
105 .max = 11,
106 .deflt = 10,
107 },
108 {
109 .reg_domain = IW_REG_DOMAIN_FRANCE,
110 .min = 10,
111 .max = 13,
112 .deflt = 10,
113 },
114 {
115 .reg_domain = IW_REG_DOMAIN_MKK,
116 .min = 14,
117 .max = 14,
118 .deflt = 14,
119 },
120 {
121 .reg_domain = IW_REG_DOMAIN_MKK1,
122 .min = 1,
123 .max = 14,
124 .deflt = 1,
125 },
126 {
127 .reg_domain = IW_REG_DOMAIN_ISRAEL,
128 .min = 3,
129 .max = 9,
130 .deflt = 9,
131 },
132 };
133
134 /**
135 * iw_valid_channel - validate channel in regulatory domain
136 * @reg_comain - regulatory domain
137 * @channel - channel to validate
138 *
139 * Returns 0 if invalid in the specified regulatory domain, non-zero if valid.
140 */
141 static int iw_valid_channel(int reg_domain, int channel)
142 {
143 int i, rc = 0;
144
145 for (i = 0; i < ARRAY_SIZE(iw_channel_table); i++)
146 if (reg_domain == iw_channel_table[i].reg_domain) {
147 rc = channel >= iw_channel_table[i].min &&
148 channel <= iw_channel_table[i].max;
149 break;
150 }
151 return rc;
152 }
153
154 /**
155 * iw_default_channel - get default channel for a regulatory domain
156 * @reg_comain - regulatory domain
157 *
158 * Returns the default channel for a regulatory domain
159 */
160 static int iw_default_channel(int reg_domain)
161 {
162 int i, rc = 1;
163
164 for (i = 0; i < ARRAY_SIZE(iw_channel_table); i++)
165 if (reg_domain == iw_channel_table[i].reg_domain) {
166 rc = iw_channel_table[i].deflt;
167 break;
168 }
169 return rc;
170 }
171
172 static void iw_set_mgmt_info_element(enum iw_mgmt_info_element_ids id,
173 struct iw_mgmt_info_element *el,
174 void *value, int len)
175 {
176 el->id = id;
177 el->len = len;
178 memcpy(el->data, value, len);
179 }
180
181 static void iw_copy_mgmt_info_element(struct iw_mgmt_info_element *to,
182 struct iw_mgmt_info_element *from)
183 {
184 iw_set_mgmt_info_element(from->id, to, from->data, from->len);
185 }
186
187 static inline void wl3501_switch_page(struct wl3501_card *this, u8 page)
188 {
189 wl3501_outb(page, this->base_addr + WL3501_NIC_BSS);
190 }
191
192 /*
193 * Get Ethernet MAC address.
194 *
195 * WARNING: We switch to FPAGE0 and switc back again.
196 * Making sure there is no other WL function beening called by ISR.
197 */
198 static int wl3501_get_flash_mac_addr(struct wl3501_card *this)
199 {
200 int base_addr = this->base_addr;
201
202 /* get MAC addr */
203 wl3501_outb(WL3501_BSS_FPAGE3, base_addr + WL3501_NIC_BSS); /* BSS */
204 wl3501_outb(0x00, base_addr + WL3501_NIC_LMAL); /* LMAL */
205 wl3501_outb(0x40, base_addr + WL3501_NIC_LMAH); /* LMAH */
206
207 /* wait for reading EEPROM */
208 WL3501_NOPLOOP(100);
209 this->mac_addr[0] = inb(base_addr + WL3501_NIC_IODPA);
210 WL3501_NOPLOOP(100);
211 this->mac_addr[1] = inb(base_addr + WL3501_NIC_IODPA);
212 WL3501_NOPLOOP(100);
213 this->mac_addr[2] = inb(base_addr + WL3501_NIC_IODPA);
214 WL3501_NOPLOOP(100);
215 this->mac_addr[3] = inb(base_addr + WL3501_NIC_IODPA);
216 WL3501_NOPLOOP(100);
217 this->mac_addr[4] = inb(base_addr + WL3501_NIC_IODPA);
218 WL3501_NOPLOOP(100);
219 this->mac_addr[5] = inb(base_addr + WL3501_NIC_IODPA);
220 WL3501_NOPLOOP(100);
221 this->reg_domain = inb(base_addr + WL3501_NIC_IODPA);
222 WL3501_NOPLOOP(100);
223 wl3501_outb(WL3501_BSS_FPAGE0, base_addr + WL3501_NIC_BSS);
224 wl3501_outb(0x04, base_addr + WL3501_NIC_LMAL);
225 wl3501_outb(0x40, base_addr + WL3501_NIC_LMAH);
226 WL3501_NOPLOOP(100);
227 this->version[0] = inb(base_addr + WL3501_NIC_IODPA);
228 WL3501_NOPLOOP(100);
229 this->version[1] = inb(base_addr + WL3501_NIC_IODPA);
230 /* switch to SRAM Page 0 (for safety) */
231 wl3501_switch_page(this, WL3501_BSS_SPAGE0);
232
233 /* The MAC addr should be 00:60:... */
234 return this->mac_addr[0] == 0x00 && this->mac_addr[1] == 0x60;
235 }
236
237 /**
238 * wl3501_set_to_wla - Move 'size' bytes from PC to card
239 * @dest: Card addressing space
240 * @src: PC addressing space
241 * @size: Bytes to move
242 *
243 * Move 'size' bytes from PC to card. (Shouldn't be interrupted)
244 */
245 static void wl3501_set_to_wla(struct wl3501_card *this, u16 dest, void *src,
246 int size)
247 {
248 /* switch to SRAM Page 0 */
249 wl3501_switch_page(this, (dest & 0x8000) ? WL3501_BSS_SPAGE1 :
250 WL3501_BSS_SPAGE0);
251 /* set LMAL and LMAH */
252 wl3501_outb(dest & 0xff, this->base_addr + WL3501_NIC_LMAL);
253 wl3501_outb(((dest >> 8) & 0x7f), this->base_addr + WL3501_NIC_LMAH);
254
255 /* rep out to Port A */
256 wl3501_outsb(this->base_addr + WL3501_NIC_IODPA, src, size);
257 }
258
259 /**
260 * wl3501_get_from_wla - Move 'size' bytes from card to PC
261 * @src: Card addressing space
262 * @dest: PC addressing space
263 * @size: Bytes to move
264 *
265 * Move 'size' bytes from card to PC. (Shouldn't be interrupted)
266 */
267 static void wl3501_get_from_wla(struct wl3501_card *this, u16 src, void *dest,
268 int size)
269 {
270 /* switch to SRAM Page 0 */
271 wl3501_switch_page(this, (src & 0x8000) ? WL3501_BSS_SPAGE1 :
272 WL3501_BSS_SPAGE0);
273 /* set LMAL and LMAH */
274 wl3501_outb(src & 0xff, this->base_addr + WL3501_NIC_LMAL);
275 wl3501_outb((src >> 8) & 0x7f, this->base_addr + WL3501_NIC_LMAH);
276
277 /* rep get from Port A */
278 insb(this->base_addr + WL3501_NIC_IODPA, dest, size);
279 }
280
281 /*
282 * Get/Allocate a free Tx Data Buffer
283 *
284 * *--------------*-----------------*----------------------------------*
285 * | PLCP | MAC Header | DST SRC Data ... |
286 * | (24 bytes) | (30 bytes) | (6) (6) (Ethernet Row Data) |
287 * *--------------*-----------------*----------------------------------*
288 * \ \- IEEE 802.11 -/ \-------------- len --------------/
289 * \-struct wl3501_80211_tx_hdr--/ \-------- Ethernet Frame -------/
290 *
291 * Return = Position in Card
292 */
293 static u16 wl3501_get_tx_buffer(struct wl3501_card *this, u16 len)
294 {
295 u16 next, blk_cnt = 0, zero = 0;
296 u16 full_len = sizeof(struct wl3501_80211_tx_hdr) + len;
297 u16 ret = 0;
298
299 if (full_len > this->tx_buffer_cnt * 254)
300 goto out;
301 ret = this->tx_buffer_head;
302 while (full_len) {
303 if (full_len < 254)
304 full_len = 0;
305 else
306 full_len -= 254;
307 wl3501_get_from_wla(this, this->tx_buffer_head, &next,
308 sizeof(next));
309 if (!full_len)
310 wl3501_set_to_wla(this, this->tx_buffer_head, &zero,
311 sizeof(zero));
312 this->tx_buffer_head = next;
313 blk_cnt++;
314 /* if buffer is not enough */
315 if (!next && full_len) {
316 this->tx_buffer_head = ret;
317 ret = 0;
318 goto out;
319 }
320 }
321 this->tx_buffer_cnt -= blk_cnt;
322 out:
323 return ret;
324 }
325
326 /*
327 * Free an allocated Tx Buffer. ptr must be correct position.
328 */
329 static void wl3501_free_tx_buffer(struct wl3501_card *this, u16 ptr)
330 {
331 /* check if all space is not free */
332 if (!this->tx_buffer_head)
333 this->tx_buffer_head = ptr;
334 else
335 wl3501_set_to_wla(this, this->tx_buffer_tail,
336 &ptr, sizeof(ptr));
337 while (ptr) {
338 u16 next;
339
340 this->tx_buffer_cnt++;
341 wl3501_get_from_wla(this, ptr, &next, sizeof(next));
342 this->tx_buffer_tail = ptr;
343 ptr = next;
344 }
345 }
346
347 static int wl3501_esbq_req_test(struct wl3501_card *this)
348 {
349 u8 tmp = 0;
350
351 wl3501_get_from_wla(this, this->esbq_req_head + 3, &tmp, sizeof(tmp));
352 return tmp & 0x80;
353 }
354
355 static void wl3501_esbq_req(struct wl3501_card *this, u16 *ptr)
356 {
357 u16 tmp = 0;
358
359 wl3501_set_to_wla(this, this->esbq_req_head, ptr, 2);
360 wl3501_set_to_wla(this, this->esbq_req_head + 2, &tmp, sizeof(tmp));
361 this->esbq_req_head += 4;
362 if (this->esbq_req_head >= this->esbq_req_end)
363 this->esbq_req_head = this->esbq_req_start;
364 }
365
366 static int wl3501_esbq_exec(struct wl3501_card *this, void *sig, int sig_size)
367 {
368 int rc = -EIO;
369
370 if (wl3501_esbq_req_test(this)) {
371 u16 ptr = wl3501_get_tx_buffer(this, sig_size);
372 if (ptr) {
373 wl3501_set_to_wla(this, ptr, sig, sig_size);
374 wl3501_esbq_req(this, &ptr);
375 rc = 0;
376 }
377 }
378 return rc;
379 }
380
381 static int wl3501_request_mib(struct wl3501_card *this, u8 index, void *bf)
382 {
383 struct wl3501_get_req sig = {
384 .sig_id = WL3501_SIG_GET_REQ,
385 .mib_attrib = index,
386 };
387 unsigned long flags;
388 int rc = -EIO;
389
390 spin_lock_irqsave(&this->lock, flags);
391 if (wl3501_esbq_req_test(this)) {
392 u16 ptr = wl3501_get_tx_buffer(this, sizeof(sig));
393 if (ptr) {
394 wl3501_set_to_wla(this, ptr, &sig, sizeof(sig));
395 wl3501_esbq_req(this, &ptr);
396 this->sig_get_confirm.mib_status = 255;
397 rc = 0;
398 }
399 }
400 spin_unlock_irqrestore(&this->lock, flags);
401
402 return rc;
403 }
404
405 static int wl3501_get_mib_value(struct wl3501_card *this, u8 index,
406 void *bf, int size)
407 {
408 int rc;
409
410 rc = wl3501_request_mib(this, index, bf);
411 if (rc)
412 return rc;
413
414 rc = wait_event_interruptible(this->wait,
415 this->sig_get_confirm.mib_status != 255);
416 if (rc)
417 return rc;
418
419 memcpy(bf, this->sig_get_confirm.mib_value, size);
420 return 0;
421 }
422
423 static int wl3501_pwr_mgmt(struct wl3501_card *this, int suspend)
424 {
425 struct wl3501_pwr_mgmt_req sig = {
426 .sig_id = WL3501_SIG_PWR_MGMT_REQ,
427 .pwr_save = suspend,
428 .wake_up = !suspend,
429 .receive_dtims = 10,
430 };
431 unsigned long flags;
432 int rc = -EIO;
433
434 spin_lock_irqsave(&this->lock, flags);
435 if (wl3501_esbq_req_test(this)) {
436 u16 ptr = wl3501_get_tx_buffer(this, sizeof(sig));
437 if (ptr) {
438 wl3501_set_to_wla(this, ptr, &sig, sizeof(sig));
439 wl3501_esbq_req(this, &ptr);
440 this->sig_pwr_mgmt_confirm.status = 255;
441 spin_unlock_irqrestore(&this->lock, flags);
442 rc = wait_event_interruptible(this->wait,
443 this->sig_pwr_mgmt_confirm.status != 255);
444 printk(KERN_INFO "%s: %s status=%d\n", __func__,
445 suspend ? "suspend" : "resume",
446 this->sig_pwr_mgmt_confirm.status);
447 goto out;
448 }
449 }
450 spin_unlock_irqrestore(&this->lock, flags);
451 out:
452 return rc;
453 }
454
455 /**
456 * wl3501_send_pkt - Send a packet.
457 * @this - card
458 *
459 * Send a packet.
460 *
461 * data = Ethernet raw frame. (e.g. data[0] - data[5] is Dest MAC Addr,
462 * data[6] - data[11] is Src MAC Addr)
463 * Ref: IEEE 802.11
464 */
465 static int wl3501_send_pkt(struct wl3501_card *this, u8 *data, u16 len)
466 {
467 u16 bf, sig_bf, next, tmplen, pktlen;
468 struct wl3501_md_req sig = {
469 .sig_id = WL3501_SIG_MD_REQ,
470 };
471 u8 *pdata = (char *)data;
472 int rc = -EIO;
473
474 if (wl3501_esbq_req_test(this)) {
475 sig_bf = wl3501_get_tx_buffer(this, sizeof(sig));
476 rc = -ENOMEM;
477 if (!sig_bf) /* No free buffer available */
478 goto out;
479 bf = wl3501_get_tx_buffer(this, len + 26 + 24);
480 if (!bf) {
481 /* No free buffer available */
482 wl3501_free_tx_buffer(this, sig_bf);
483 goto out;
484 }
485 rc = 0;
486 memcpy(&sig.daddr[0], pdata, 12);
487 pktlen = len - 12;
488 pdata += 12;
489 sig.data = bf;
490 if (((*pdata) * 256 + (*(pdata + 1))) > 1500) {
491 u8 addr4[ETH_ALEN] = {
492 [0] = 0xAA, [1] = 0xAA, [2] = 0x03, [4] = 0x00,
493 };
494
495 wl3501_set_to_wla(this, bf + 2 +
496 offsetof(struct wl3501_tx_hdr, addr4),
497 addr4, sizeof(addr4));
498 sig.size = pktlen + 24 + 4 + 6;
499 if (pktlen > (254 - sizeof(struct wl3501_tx_hdr))) {
500 tmplen = 254 - sizeof(struct wl3501_tx_hdr);
501 pktlen -= tmplen;
502 } else {
503 tmplen = pktlen;
504 pktlen = 0;
505 }
506 wl3501_set_to_wla(this,
507 bf + 2 + sizeof(struct wl3501_tx_hdr),
508 pdata, tmplen);
509 pdata += tmplen;
510 wl3501_get_from_wla(this, bf, &next, sizeof(next));
511 bf = next;
512 } else {
513 sig.size = pktlen + 24 + 4 - 2;
514 pdata += 2;
515 pktlen -= 2;
516 if (pktlen > (254 - sizeof(struct wl3501_tx_hdr) + 6)) {
517 tmplen = 254 - sizeof(struct wl3501_tx_hdr) + 6;
518 pktlen -= tmplen;
519 } else {
520 tmplen = pktlen;
521 pktlen = 0;
522 }
523 wl3501_set_to_wla(this, bf + 2 +
524 offsetof(struct wl3501_tx_hdr, addr4),
525 pdata, tmplen);
526 pdata += tmplen;
527 wl3501_get_from_wla(this, bf, &next, sizeof(next));
528 bf = next;
529 }
530 while (pktlen > 0) {
531 if (pktlen > 254) {
532 tmplen = 254;
533 pktlen -= 254;
534 } else {
535 tmplen = pktlen;
536 pktlen = 0;
537 }
538 wl3501_set_to_wla(this, bf + 2, pdata, tmplen);
539 pdata += tmplen;
540 wl3501_get_from_wla(this, bf, &next, sizeof(next));
541 bf = next;
542 }
543 wl3501_set_to_wla(this, sig_bf, &sig, sizeof(sig));
544 wl3501_esbq_req(this, &sig_bf);
545 }
546 out:
547 return rc;
548 }
549
550 static int wl3501_mgmt_resync(struct wl3501_card *this)
551 {
552 struct wl3501_resync_req sig = {
553 .sig_id = WL3501_SIG_RESYNC_REQ,
554 };
555
556 return wl3501_esbq_exec(this, &sig, sizeof(sig));
557 }
558
559 static inline int wl3501_fw_bss_type(struct wl3501_card *this)
560 {
561 return this->net_type == IW_MODE_INFRA ? WL3501_NET_TYPE_INFRA :
562 WL3501_NET_TYPE_ADHOC;
563 }
564
565 static inline int wl3501_fw_cap_info(struct wl3501_card *this)
566 {
567 return this->net_type == IW_MODE_INFRA ? WL3501_MGMT_CAPABILITY_ESS :
568 WL3501_MGMT_CAPABILITY_IBSS;
569 }
570
571 static int wl3501_mgmt_scan(struct wl3501_card *this, u16 chan_time)
572 {
573 struct wl3501_scan_req sig = {
574 .sig_id = WL3501_SIG_SCAN_REQ,
575 .scan_type = WL3501_SCAN_TYPE_ACTIVE,
576 .probe_delay = 0x10,
577 .min_chan_time = chan_time,
578 .max_chan_time = chan_time,
579 .bss_type = wl3501_fw_bss_type(this),
580 };
581
582 this->bss_cnt = this->join_sta_bss = 0;
583 return wl3501_esbq_exec(this, &sig, sizeof(sig));
584 }
585
586 static int wl3501_mgmt_join(struct wl3501_card *this, u16 stas)
587 {
588 struct wl3501_join_req sig = {
589 .sig_id = WL3501_SIG_JOIN_REQ,
590 .timeout = 10,
591 .ds_pset = {
592 .el = {
593 .id = IW_MGMT_INFO_ELEMENT_DS_PARAMETER_SET,
594 .len = 1,
595 },
596 .chan = this->chan,
597 },
598 };
599
600 memcpy(&sig.beacon_period, &this->bss_set[stas].beacon_period, 72);
601 return wl3501_esbq_exec(this, &sig, sizeof(sig));
602 }
603
604 static int wl3501_mgmt_start(struct wl3501_card *this)
605 {
606 struct wl3501_start_req sig = {
607 .sig_id = WL3501_SIG_START_REQ,
608 .beacon_period = 400,
609 .dtim_period = 1,
610 .ds_pset = {
611 .el = {
612 .id = IW_MGMT_INFO_ELEMENT_DS_PARAMETER_SET,
613 .len = 1,
614 },
615 .chan = this->chan,
616 },
617 .bss_basic_rset = {
618 .el = {
619 .id = IW_MGMT_INFO_ELEMENT_SUPPORTED_RATES,
620 .len = 2,
621 },
622 .data_rate_labels = {
623 [0] = IW_MGMT_RATE_LABEL_MANDATORY |
624 IW_MGMT_RATE_LABEL_1MBIT,
625 [1] = IW_MGMT_RATE_LABEL_MANDATORY |
626 IW_MGMT_RATE_LABEL_2MBIT,
627 },
628 },
629 .operational_rset = {
630 .el = {
631 .id = IW_MGMT_INFO_ELEMENT_SUPPORTED_RATES,
632 .len = 2,
633 },
634 .data_rate_labels = {
635 [0] = IW_MGMT_RATE_LABEL_MANDATORY |
636 IW_MGMT_RATE_LABEL_1MBIT,
637 [1] = IW_MGMT_RATE_LABEL_MANDATORY |
638 IW_MGMT_RATE_LABEL_2MBIT,
639 },
640 },
641 .ibss_pset = {
642 .el = {
643 .id = IW_MGMT_INFO_ELEMENT_IBSS_PARAMETER_SET,
644 .len = 2,
645 },
646 .atim_window = 10,
647 },
648 .bss_type = wl3501_fw_bss_type(this),
649 .cap_info = wl3501_fw_cap_info(this),
650 };
651
652 iw_copy_mgmt_info_element(&sig.ssid.el, &this->essid.el);
653 iw_copy_mgmt_info_element(&this->keep_essid.el, &this->essid.el);
654 return wl3501_esbq_exec(this, &sig, sizeof(sig));
655 }
656
657 static void wl3501_mgmt_scan_confirm(struct wl3501_card *this, u16 addr)
658 {
659 u16 i = 0;
660 int matchflag = 0;
661 struct wl3501_scan_confirm sig;
662
663 pr_debug("entry");
664 wl3501_get_from_wla(this, addr, &sig, sizeof(sig));
665 if (sig.status == WL3501_STATUS_SUCCESS) {
666 pr_debug("success");
667 if ((this->net_type == IW_MODE_INFRA &&
668 (sig.cap_info & WL3501_MGMT_CAPABILITY_ESS)) ||
669 (this->net_type == IW_MODE_ADHOC &&
670 (sig.cap_info & WL3501_MGMT_CAPABILITY_IBSS)) ||
671 this->net_type == IW_MODE_AUTO) {
672 if (!this->essid.el.len)
673 matchflag = 1;
674 else if (this->essid.el.len == 3 &&
675 !memcmp(this->essid.essid, "ANY", 3))
676 matchflag = 1;
677 else if (this->essid.el.len != sig.ssid.el.len)
678 matchflag = 0;
679 else if (memcmp(this->essid.essid, sig.ssid.essid,
680 this->essid.el.len))
681 matchflag = 0;
682 else
683 matchflag = 1;
684 if (matchflag) {
685 for (i = 0; i < this->bss_cnt; i++) {
686 if (ether_addr_equal_unaligned(this->bss_set[i].bssid, sig.bssid)) {
687 matchflag = 0;
688 break;
689 }
690 }
691 }
692 if (matchflag && (i < 20)) {
693 memcpy(&this->bss_set[i].beacon_period,
694 &sig.beacon_period, 73);
695 this->bss_cnt++;
696 this->rssi = sig.rssi;
697 }
698 }
699 } else if (sig.status == WL3501_STATUS_TIMEOUT) {
700 pr_debug("timeout");
701 this->join_sta_bss = 0;
702 for (i = this->join_sta_bss; i < this->bss_cnt; i++)
703 if (!wl3501_mgmt_join(this, i))
704 break;
705 this->join_sta_bss = i;
706 if (this->join_sta_bss == this->bss_cnt) {
707 if (this->net_type == IW_MODE_INFRA)
708 wl3501_mgmt_scan(this, 100);
709 else {
710 this->adhoc_times++;
711 if (this->adhoc_times > WL3501_MAX_ADHOC_TRIES)
712 wl3501_mgmt_start(this);
713 else
714 wl3501_mgmt_scan(this, 100);
715 }
716 }
717 }
718 }
719
720 /**
721 * wl3501_block_interrupt - Mask interrupt from SUTRO
722 * @this - card
723 *
724 * Mask interrupt from SUTRO. (i.e. SUTRO cannot interrupt the HOST)
725 * Return: 1 if interrupt is originally enabled
726 */
727 static int wl3501_block_interrupt(struct wl3501_card *this)
728 {
729 u8 old = inb(this->base_addr + WL3501_NIC_GCR);
730 u8 new = old & (~(WL3501_GCR_ECINT | WL3501_GCR_INT2EC |
731 WL3501_GCR_ENECINT));
732
733 wl3501_outb(new, this->base_addr + WL3501_NIC_GCR);
734 return old & WL3501_GCR_ENECINT;
735 }
736
737 /**
738 * wl3501_unblock_interrupt - Enable interrupt from SUTRO
739 * @this - card
740 *
741 * Enable interrupt from SUTRO. (i.e. SUTRO can interrupt the HOST)
742 * Return: 1 if interrupt is originally enabled
743 */
744 static int wl3501_unblock_interrupt(struct wl3501_card *this)
745 {
746 u8 old = inb(this->base_addr + WL3501_NIC_GCR);
747 u8 new = (old & ~(WL3501_GCR_ECINT | WL3501_GCR_INT2EC)) |
748 WL3501_GCR_ENECINT;
749
750 wl3501_outb(new, this->base_addr + WL3501_NIC_GCR);
751 return old & WL3501_GCR_ENECINT;
752 }
753
754 /**
755 * wl3501_receive - Receive data from Receive Queue.
756 *
757 * Receive data from Receive Queue.
758 *
759 * @this: card
760 * @bf: address of host
761 * @size: size of buffer.
762 */
763 static u16 wl3501_receive(struct wl3501_card *this, u8 *bf, u16 size)
764 {
765 u16 next_addr, next_addr1;
766 u8 *data = bf + 12;
767
768 size -= 12;
769 wl3501_get_from_wla(this, this->start_seg + 2,
770 &next_addr, sizeof(next_addr));
771 if (size > WL3501_BLKSZ - sizeof(struct wl3501_rx_hdr)) {
772 wl3501_get_from_wla(this,
773 this->start_seg +
774 sizeof(struct wl3501_rx_hdr), data,
775 WL3501_BLKSZ -
776 sizeof(struct wl3501_rx_hdr));
777 size -= WL3501_BLKSZ - sizeof(struct wl3501_rx_hdr);
778 data += WL3501_BLKSZ - sizeof(struct wl3501_rx_hdr);
779 } else {
780 wl3501_get_from_wla(this,
781 this->start_seg +
782 sizeof(struct wl3501_rx_hdr),
783 data, size);
784 size = 0;
785 }
786 while (size > 0) {
787 if (size > WL3501_BLKSZ - 5) {
788 wl3501_get_from_wla(this, next_addr + 5, data,
789 WL3501_BLKSZ - 5);
790 size -= WL3501_BLKSZ - 5;
791 data += WL3501_BLKSZ - 5;
792 wl3501_get_from_wla(this, next_addr + 2, &next_addr1,
793 sizeof(next_addr1));
794 next_addr = next_addr1;
795 } else {
796 wl3501_get_from_wla(this, next_addr + 5, data, size);
797 size = 0;
798 }
799 }
800 return 0;
801 }
802
803 static void wl3501_esbq_req_free(struct wl3501_card *this)
804 {
805 u8 tmp;
806 u16 addr;
807
808 if (this->esbq_req_head == this->esbq_req_tail)
809 goto out;
810 wl3501_get_from_wla(this, this->esbq_req_tail + 3, &tmp, sizeof(tmp));
811 if (!(tmp & 0x80))
812 goto out;
813 wl3501_get_from_wla(this, this->esbq_req_tail, &addr, sizeof(addr));
814 wl3501_free_tx_buffer(this, addr);
815 this->esbq_req_tail += 4;
816 if (this->esbq_req_tail >= this->esbq_req_end)
817 this->esbq_req_tail = this->esbq_req_start;
818 out:
819 return;
820 }
821
822 static int wl3501_esbq_confirm(struct wl3501_card *this)
823 {
824 u8 tmp;
825
826 wl3501_get_from_wla(this, this->esbq_confirm + 3, &tmp, sizeof(tmp));
827 return tmp & 0x80;
828 }
829
830 static void wl3501_online(struct net_device *dev)
831 {
832 struct wl3501_card *this = netdev_priv(dev);
833
834 printk(KERN_INFO "%s: Wireless LAN online. BSSID: %pM\n",
835 dev->name, this->bssid);
836 netif_wake_queue(dev);
837 }
838
839 static void wl3501_esbq_confirm_done(struct wl3501_card *this)
840 {
841 u8 tmp = 0;
842
843 wl3501_set_to_wla(this, this->esbq_confirm + 3, &tmp, sizeof(tmp));
844 this->esbq_confirm += 4;
845 if (this->esbq_confirm >= this->esbq_confirm_end)
846 this->esbq_confirm = this->esbq_confirm_start;
847 }
848
849 static int wl3501_mgmt_auth(struct wl3501_card *this)
850 {
851 struct wl3501_auth_req sig = {
852 .sig_id = WL3501_SIG_AUTH_REQ,
853 .type = WL3501_SYS_TYPE_OPEN,
854 .timeout = 1000,
855 };
856
857 pr_debug("entry");
858 memcpy(sig.mac_addr, this->bssid, ETH_ALEN);
859 return wl3501_esbq_exec(this, &sig, sizeof(sig));
860 }
861
862 static int wl3501_mgmt_association(struct wl3501_card *this)
863 {
864 struct wl3501_assoc_req sig = {
865 .sig_id = WL3501_SIG_ASSOC_REQ,
866 .timeout = 1000,
867 .listen_interval = 5,
868 .cap_info = this->cap_info,
869 };
870
871 pr_debug("entry");
872 memcpy(sig.mac_addr, this->bssid, ETH_ALEN);
873 return wl3501_esbq_exec(this, &sig, sizeof(sig));
874 }
875
876 static void wl3501_mgmt_join_confirm(struct net_device *dev, u16 addr)
877 {
878 struct wl3501_card *this = netdev_priv(dev);
879 struct wl3501_join_confirm sig;
880
881 pr_debug("entry");
882 wl3501_get_from_wla(this, addr, &sig, sizeof(sig));
883 if (sig.status == WL3501_STATUS_SUCCESS) {
884 if (this->net_type == IW_MODE_INFRA) {
885 if (this->join_sta_bss < this->bss_cnt) {
886 const int i = this->join_sta_bss;
887 memcpy(this->bssid,
888 this->bss_set[i].bssid, ETH_ALEN);
889 this->chan = this->bss_set[i].ds_pset.chan;
890 iw_copy_mgmt_info_element(&this->keep_essid.el,
891 &this->bss_set[i].ssid.el);
892 wl3501_mgmt_auth(this);
893 }
894 } else {
895 const int i = this->join_sta_bss;
896
897 memcpy(&this->bssid, &this->bss_set[i].bssid, ETH_ALEN);
898 this->chan = this->bss_set[i].ds_pset.chan;
899 iw_copy_mgmt_info_element(&this->keep_essid.el,
900 &this->bss_set[i].ssid.el);
901 wl3501_online(dev);
902 }
903 } else {
904 int i;
905 this->join_sta_bss++;
906 for (i = this->join_sta_bss; i < this->bss_cnt; i++)
907 if (!wl3501_mgmt_join(this, i))
908 break;
909 this->join_sta_bss = i;
910 if (this->join_sta_bss == this->bss_cnt) {
911 if (this->net_type == IW_MODE_INFRA)
912 wl3501_mgmt_scan(this, 100);
913 else {
914 this->adhoc_times++;
915 if (this->adhoc_times > WL3501_MAX_ADHOC_TRIES)
916 wl3501_mgmt_start(this);
917 else
918 wl3501_mgmt_scan(this, 100);
919 }
920 }
921 }
922 }
923
924 static inline void wl3501_alarm_interrupt(struct net_device *dev,
925 struct wl3501_card *this)
926 {
927 if (this->net_type == IW_MODE_INFRA) {
928 printk(KERN_INFO "Wireless LAN offline\n");
929 netif_stop_queue(dev);
930 wl3501_mgmt_resync(this);
931 }
932 }
933
934 static inline void wl3501_md_confirm_interrupt(struct net_device *dev,
935 struct wl3501_card *this,
936 u16 addr)
937 {
938 struct wl3501_md_confirm sig;
939
940 pr_debug("entry");
941 wl3501_get_from_wla(this, addr, &sig, sizeof(sig));
942 wl3501_free_tx_buffer(this, sig.data);
943 if (netif_queue_stopped(dev))
944 netif_wake_queue(dev);
945 }
946
947 static inline void wl3501_md_ind_interrupt(struct net_device *dev,
948 struct wl3501_card *this, u16 addr)
949 {
950 struct wl3501_md_ind sig;
951 struct sk_buff *skb;
952 u8 rssi, addr4[ETH_ALEN];
953 u16 pkt_len;
954
955 wl3501_get_from_wla(this, addr, &sig, sizeof(sig));
956 this->start_seg = sig.data;
957 wl3501_get_from_wla(this,
958 sig.data + offsetof(struct wl3501_rx_hdr, rssi),
959 &rssi, sizeof(rssi));
960 this->rssi = rssi <= 63 ? (rssi * 100) / 64 : 255;
961
962 wl3501_get_from_wla(this,
963 sig.data +
964 offsetof(struct wl3501_rx_hdr, addr4),
965 &addr4, sizeof(addr4));
966 if (!(addr4[0] == 0xAA && addr4[1] == 0xAA &&
967 addr4[2] == 0x03 && addr4[4] == 0x00)) {
968 printk(KERN_INFO "Insupported packet type!\n");
969 return;
970 }
971 pkt_len = sig.size + 12 - 24 - 4 - 6;
972
973 skb = dev_alloc_skb(pkt_len + 5);
974
975 if (!skb) {
976 printk(KERN_WARNING "%s: Can't alloc a sk_buff of size %d.\n",
977 dev->name, pkt_len);
978 dev->stats.rx_dropped++;
979 } else {
980 skb->dev = dev;
981 skb_reserve(skb, 2); /* IP headers on 16 bytes boundaries */
982 skb_copy_to_linear_data(skb, (unsigned char *)&sig.daddr, 12);
983 wl3501_receive(this, skb->data, pkt_len);
984 skb_put(skb, pkt_len);
985 skb->protocol = eth_type_trans(skb, dev);
986 dev->stats.rx_packets++;
987 dev->stats.rx_bytes += skb->len;
988 netif_rx(skb);
989 }
990 }
991
992 static inline void wl3501_get_confirm_interrupt(struct wl3501_card *this,
993 u16 addr, void *sig, int size)
994 {
995 pr_debug("entry");
996 wl3501_get_from_wla(this, addr, &this->sig_get_confirm,
997 sizeof(this->sig_get_confirm));
998 wake_up(&this->wait);
999 }
1000
1001 static inline void wl3501_start_confirm_interrupt(struct net_device *dev,
1002 struct wl3501_card *this,
1003 u16 addr)
1004 {
1005 struct wl3501_start_confirm sig;
1006
1007 pr_debug("entry");
1008 wl3501_get_from_wla(this, addr, &sig, sizeof(sig));
1009 if (sig.status == WL3501_STATUS_SUCCESS)
1010 netif_wake_queue(dev);
1011 }
1012
1013 static inline void wl3501_assoc_confirm_interrupt(struct net_device *dev,
1014 u16 addr)
1015 {
1016 struct wl3501_card *this = netdev_priv(dev);
1017 struct wl3501_assoc_confirm sig;
1018
1019 pr_debug("entry");
1020 wl3501_get_from_wla(this, addr, &sig, sizeof(sig));
1021
1022 if (sig.status == WL3501_STATUS_SUCCESS)
1023 wl3501_online(dev);
1024 }
1025
1026 static inline void wl3501_auth_confirm_interrupt(struct wl3501_card *this,
1027 u16 addr)
1028 {
1029 struct wl3501_auth_confirm sig;
1030
1031 pr_debug("entry");
1032 wl3501_get_from_wla(this, addr, &sig, sizeof(sig));
1033
1034 if (sig.status == WL3501_STATUS_SUCCESS)
1035 wl3501_mgmt_association(this);
1036 else
1037 wl3501_mgmt_resync(this);
1038 }
1039
1040 static inline void wl3501_rx_interrupt(struct net_device *dev)
1041 {
1042 int morepkts;
1043 u16 addr;
1044 u8 sig_id;
1045 struct wl3501_card *this = netdev_priv(dev);
1046
1047 pr_debug("entry");
1048 loop:
1049 morepkts = 0;
1050 if (!wl3501_esbq_confirm(this))
1051 goto free;
1052 wl3501_get_from_wla(this, this->esbq_confirm, &addr, sizeof(addr));
1053 wl3501_get_from_wla(this, addr + 2, &sig_id, sizeof(sig_id));
1054
1055 switch (sig_id) {
1056 case WL3501_SIG_DEAUTH_IND:
1057 case WL3501_SIG_DISASSOC_IND:
1058 case WL3501_SIG_ALARM:
1059 wl3501_alarm_interrupt(dev, this);
1060 break;
1061 case WL3501_SIG_MD_CONFIRM:
1062 wl3501_md_confirm_interrupt(dev, this, addr);
1063 break;
1064 case WL3501_SIG_MD_IND:
1065 wl3501_md_ind_interrupt(dev, this, addr);
1066 break;
1067 case WL3501_SIG_GET_CONFIRM:
1068 wl3501_get_confirm_interrupt(this, addr,
1069 &this->sig_get_confirm,
1070 sizeof(this->sig_get_confirm));
1071 break;
1072 case WL3501_SIG_PWR_MGMT_CONFIRM:
1073 wl3501_get_confirm_interrupt(this, addr,
1074 &this->sig_pwr_mgmt_confirm,
1075 sizeof(this->sig_pwr_mgmt_confirm));
1076 break;
1077 case WL3501_SIG_START_CONFIRM:
1078 wl3501_start_confirm_interrupt(dev, this, addr);
1079 break;
1080 case WL3501_SIG_SCAN_CONFIRM:
1081 wl3501_mgmt_scan_confirm(this, addr);
1082 break;
1083 case WL3501_SIG_JOIN_CONFIRM:
1084 wl3501_mgmt_join_confirm(dev, addr);
1085 break;
1086 case WL3501_SIG_ASSOC_CONFIRM:
1087 wl3501_assoc_confirm_interrupt(dev, addr);
1088 break;
1089 case WL3501_SIG_AUTH_CONFIRM:
1090 wl3501_auth_confirm_interrupt(this, addr);
1091 break;
1092 case WL3501_SIG_RESYNC_CONFIRM:
1093 wl3501_mgmt_resync(this); /* FIXME: should be resync_confirm */
1094 break;
1095 }
1096 wl3501_esbq_confirm_done(this);
1097 morepkts = 1;
1098 /* free request if necessary */
1099 free:
1100 wl3501_esbq_req_free(this);
1101 if (morepkts)
1102 goto loop;
1103 }
1104
1105 static inline void wl3501_ack_interrupt(struct wl3501_card *this)
1106 {
1107 wl3501_outb(WL3501_GCR_ECINT, this->base_addr + WL3501_NIC_GCR);
1108 }
1109
1110 /**
1111 * wl3501_interrupt - Hardware interrupt from card.
1112 * @irq - Interrupt number
1113 * @dev_id - net_device
1114 *
1115 * We must acknowledge the interrupt as soon as possible, and block the
1116 * interrupt from the same card immediately to prevent re-entry.
1117 *
1118 * Before accessing the Control_Status_Block, we must lock SUTRO first.
1119 * On the other hand, to prevent SUTRO from malfunctioning, we must
1120 * unlock the SUTRO as soon as possible.
1121 */
1122 static irqreturn_t wl3501_interrupt(int irq, void *dev_id)
1123 {
1124 struct net_device *dev = dev_id;
1125 struct wl3501_card *this;
1126
1127 this = netdev_priv(dev);
1128 spin_lock(&this->lock);
1129 wl3501_ack_interrupt(this);
1130 wl3501_block_interrupt(this);
1131 wl3501_rx_interrupt(dev);
1132 wl3501_unblock_interrupt(this);
1133 spin_unlock(&this->lock);
1134
1135 return IRQ_HANDLED;
1136 }
1137
1138 static int wl3501_reset_board(struct wl3501_card *this)
1139 {
1140 u8 tmp = 0;
1141 int i, rc = 0;
1142
1143 /* Coreset */
1144 wl3501_outb_p(WL3501_GCR_CORESET, this->base_addr + WL3501_NIC_GCR);
1145 wl3501_outb_p(0, this->base_addr + WL3501_NIC_GCR);
1146 wl3501_outb_p(WL3501_GCR_CORESET, this->base_addr + WL3501_NIC_GCR);
1147
1148 /* Reset SRAM 0x480 to zero */
1149 wl3501_set_to_wla(this, 0x480, &tmp, sizeof(tmp));
1150
1151 /* Start up */
1152 wl3501_outb_p(0, this->base_addr + WL3501_NIC_GCR);
1153
1154 WL3501_NOPLOOP(1024 * 50);
1155
1156 wl3501_unblock_interrupt(this); /* acme: was commented */
1157
1158 /* Polling Self_Test_Status */
1159 for (i = 0; i < 10000; i++) {
1160 wl3501_get_from_wla(this, 0x480, &tmp, sizeof(tmp));
1161
1162 if (tmp == 'W') {
1163 /* firmware complete all test successfully */
1164 tmp = 'A';
1165 wl3501_set_to_wla(this, 0x480, &tmp, sizeof(tmp));
1166 goto out;
1167 }
1168 WL3501_NOPLOOP(10);
1169 }
1170 printk(KERN_WARNING "%s: failed to reset the board!\n", __func__);
1171 rc = -ENODEV;
1172 out:
1173 return rc;
1174 }
1175
1176 static int wl3501_init_firmware(struct wl3501_card *this)
1177 {
1178 u16 ptr, next;
1179 int rc = wl3501_reset_board(this);
1180
1181 if (rc)
1182 goto fail;
1183 this->card_name[0] = '\0';
1184 wl3501_get_from_wla(this, 0x1a00,
1185 this->card_name, sizeof(this->card_name));
1186 this->card_name[sizeof(this->card_name) - 1] = '\0';
1187 this->firmware_date[0] = '\0';
1188 wl3501_get_from_wla(this, 0x1a40,
1189 this->firmware_date, sizeof(this->firmware_date));
1190 this->firmware_date[sizeof(this->firmware_date) - 1] = '\0';
1191 /* Switch to SRAM Page 0 */
1192 wl3501_switch_page(this, WL3501_BSS_SPAGE0);
1193 /* Read parameter from card */
1194 wl3501_get_from_wla(this, 0x482, &this->esbq_req_start, 2);
1195 wl3501_get_from_wla(this, 0x486, &this->esbq_req_end, 2);
1196 wl3501_get_from_wla(this, 0x488, &this->esbq_confirm_start, 2);
1197 wl3501_get_from_wla(this, 0x48c, &this->esbq_confirm_end, 2);
1198 wl3501_get_from_wla(this, 0x48e, &this->tx_buffer_head, 2);
1199 wl3501_get_from_wla(this, 0x492, &this->tx_buffer_size, 2);
1200 this->esbq_req_tail = this->esbq_req_head = this->esbq_req_start;
1201 this->esbq_req_end += this->esbq_req_start;
1202 this->esbq_confirm = this->esbq_confirm_start;
1203 this->esbq_confirm_end += this->esbq_confirm_start;
1204 /* Initial Tx Buffer */
1205 this->tx_buffer_cnt = 1;
1206 ptr = this->tx_buffer_head;
1207 next = ptr + WL3501_BLKSZ;
1208 while ((next - this->tx_buffer_head) < this->tx_buffer_size) {
1209 this->tx_buffer_cnt++;
1210 wl3501_set_to_wla(this, ptr, &next, sizeof(next));
1211 ptr = next;
1212 next = ptr + WL3501_BLKSZ;
1213 }
1214 rc = 0;
1215 next = 0;
1216 wl3501_set_to_wla(this, ptr, &next, sizeof(next));
1217 this->tx_buffer_tail = ptr;
1218 out:
1219 return rc;
1220 fail:
1221 printk(KERN_WARNING "%s: failed!\n", __func__);
1222 goto out;
1223 }
1224
1225 static int wl3501_close(struct net_device *dev)
1226 {
1227 struct wl3501_card *this = netdev_priv(dev);
1228 int rc = -ENODEV;
1229 unsigned long flags;
1230 struct pcmcia_device *link;
1231 link = this->p_dev;
1232
1233 spin_lock_irqsave(&this->lock, flags);
1234 link->open--;
1235
1236 /* Stop wl3501_hard_start_xmit() from now on */
1237 netif_stop_queue(dev);
1238 wl3501_ack_interrupt(this);
1239
1240 /* Mask interrupts from the SUTRO */
1241 wl3501_block_interrupt(this);
1242
1243 rc = 0;
1244 printk(KERN_INFO "%s: WL3501 closed\n", dev->name);
1245 spin_unlock_irqrestore(&this->lock, flags);
1246 return rc;
1247 }
1248
1249 /**
1250 * wl3501_reset - Reset the SUTRO.
1251 * @dev - network device
1252 *
1253 * It is almost the same as wl3501_open(). In fact, we may just wl3501_close()
1254 * and wl3501_open() again, but I wouldn't like to free_irq() when the driver
1255 * is running. It seems to be dangerous.
1256 */
1257 static int wl3501_reset(struct net_device *dev)
1258 {
1259 struct wl3501_card *this = netdev_priv(dev);
1260 int rc = -ENODEV;
1261
1262 wl3501_block_interrupt(this);
1263
1264 if (wl3501_init_firmware(this)) {
1265 printk(KERN_WARNING "%s: Can't initialize Firmware!\n",
1266 dev->name);
1267 /* Free IRQ, and mark IRQ as unused */
1268 free_irq(dev->irq, dev);
1269 goto out;
1270 }
1271
1272 /*
1273 * Queue has to be started only when the Card is Started
1274 */
1275 netif_stop_queue(dev);
1276 this->adhoc_times = 0;
1277 wl3501_ack_interrupt(this);
1278 wl3501_unblock_interrupt(this);
1279 wl3501_mgmt_scan(this, 100);
1280 pr_debug("%s: device reset", dev->name);
1281 rc = 0;
1282 out:
1283 return rc;
1284 }
1285
1286 static void wl3501_tx_timeout(struct net_device *dev)
1287 {
1288 struct wl3501_card *this = netdev_priv(dev);
1289 struct net_device_stats *stats = &dev->stats;
1290 unsigned long flags;
1291 int rc;
1292
1293 stats->tx_errors++;
1294 spin_lock_irqsave(&this->lock, flags);
1295 rc = wl3501_reset(dev);
1296 spin_unlock_irqrestore(&this->lock, flags);
1297 if (rc)
1298 printk(KERN_ERR "%s: Error %d resetting card on Tx timeout!\n",
1299 dev->name, rc);
1300 else {
1301 netif_trans_update(dev); /* prevent tx timeout */
1302 netif_wake_queue(dev);
1303 }
1304 }
1305
1306 /*
1307 * Return : 0 - OK
1308 * 1 - Could not transmit (dev_queue_xmit will queue it)
1309 * and try to sent it later
1310 */
1311 static netdev_tx_t wl3501_hard_start_xmit(struct sk_buff *skb,
1312 struct net_device *dev)
1313 {
1314 int enabled, rc;
1315 struct wl3501_card *this = netdev_priv(dev);
1316 unsigned long flags;
1317
1318 spin_lock_irqsave(&this->lock, flags);
1319 enabled = wl3501_block_interrupt(this);
1320 rc = wl3501_send_pkt(this, skb->data, skb->len);
1321 if (enabled)
1322 wl3501_unblock_interrupt(this);
1323 if (rc) {
1324 ++dev->stats.tx_dropped;
1325 netif_stop_queue(dev);
1326 } else {
1327 ++dev->stats.tx_packets;
1328 dev->stats.tx_bytes += skb->len;
1329 kfree_skb(skb);
1330
1331 if (this->tx_buffer_cnt < 2)
1332 netif_stop_queue(dev);
1333 }
1334 spin_unlock_irqrestore(&this->lock, flags);
1335 return NETDEV_TX_OK;
1336 }
1337
1338 static int wl3501_open(struct net_device *dev)
1339 {
1340 int rc = -ENODEV;
1341 struct wl3501_card *this = netdev_priv(dev);
1342 unsigned long flags;
1343 struct pcmcia_device *link;
1344 link = this->p_dev;
1345
1346 spin_lock_irqsave(&this->lock, flags);
1347 if (!pcmcia_dev_present(link))
1348 goto out;
1349 netif_device_attach(dev);
1350 link->open++;
1351
1352 /* Initial WL3501 firmware */
1353 pr_debug("%s: Initialize WL3501 firmware...", dev->name);
1354 if (wl3501_init_firmware(this))
1355 goto fail;
1356 /* Initial device variables */
1357 this->adhoc_times = 0;
1358 /* Acknowledge Interrupt, for cleaning last state */
1359 wl3501_ack_interrupt(this);
1360
1361 /* Enable interrupt from card after all */
1362 wl3501_unblock_interrupt(this);
1363 wl3501_mgmt_scan(this, 100);
1364 rc = 0;
1365 pr_debug("%s: WL3501 opened", dev->name);
1366 printk(KERN_INFO "%s: Card Name: %s\n"
1367 "%s: Firmware Date: %s\n",
1368 dev->name, this->card_name,
1369 dev->name, this->firmware_date);
1370 out:
1371 spin_unlock_irqrestore(&this->lock, flags);
1372 return rc;
1373 fail:
1374 printk(KERN_WARNING "%s: Can't initialize firmware!\n", dev->name);
1375 goto out;
1376 }
1377
1378 static struct iw_statistics *wl3501_get_wireless_stats(struct net_device *dev)
1379 {
1380 struct wl3501_card *this = netdev_priv(dev);
1381 struct iw_statistics *wstats = &this->wstats;
1382 u32 value; /* size checked: it is u32 */
1383
1384 memset(wstats, 0, sizeof(*wstats));
1385 wstats->status = netif_running(dev);
1386 if (!wl3501_get_mib_value(this, WL3501_MIB_ATTR_WEP_ICV_ERROR_COUNT,
1387 &value, sizeof(value)))
1388 wstats->discard.code += value;
1389 if (!wl3501_get_mib_value(this, WL3501_MIB_ATTR_WEP_UNDECRYPTABLE_COUNT,
1390 &value, sizeof(value)))
1391 wstats->discard.code += value;
1392 if (!wl3501_get_mib_value(this, WL3501_MIB_ATTR_WEP_EXCLUDED_COUNT,
1393 &value, sizeof(value)))
1394 wstats->discard.code += value;
1395 if (!wl3501_get_mib_value(this, WL3501_MIB_ATTR_RETRY_COUNT,
1396 &value, sizeof(value)))
1397 wstats->discard.retries = value;
1398 if (!wl3501_get_mib_value(this, WL3501_MIB_ATTR_FAILED_COUNT,
1399 &value, sizeof(value)))
1400 wstats->discard.misc += value;
1401 if (!wl3501_get_mib_value(this, WL3501_MIB_ATTR_RTS_FAILURE_COUNT,
1402 &value, sizeof(value)))
1403 wstats->discard.misc += value;
1404 if (!wl3501_get_mib_value(this, WL3501_MIB_ATTR_ACK_FAILURE_COUNT,
1405 &value, sizeof(value)))
1406 wstats->discard.misc += value;
1407 if (!wl3501_get_mib_value(this, WL3501_MIB_ATTR_FRAME_DUPLICATE_COUNT,
1408 &value, sizeof(value)))
1409 wstats->discard.misc += value;
1410 return wstats;
1411 }
1412
1413 /**
1414 * wl3501_detach - deletes a driver "instance"
1415 * @link - FILL_IN
1416 *
1417 * This deletes a driver "instance". The device is de-registered with Card
1418 * Services. If it has been released, all local data structures are freed.
1419 * Otherwise, the structures will be freed when the device is released.
1420 */
1421 static void wl3501_detach(struct pcmcia_device *link)
1422 {
1423 struct net_device *dev = link->priv;
1424
1425 /* If the device is currently configured and active, we won't actually
1426 * delete it yet. Instead, it is marked so that when the release()
1427 * function is called, that will trigger a proper detach(). */
1428
1429 while (link->open > 0)
1430 wl3501_close(dev);
1431
1432 netif_device_detach(dev);
1433 wl3501_release(link);
1434
1435 unregister_netdev(dev);
1436
1437 if (link->priv)
1438 free_netdev(link->priv);
1439 }
1440
1441 static int wl3501_get_name(struct net_device *dev, struct iw_request_info *info,
1442 union iwreq_data *wrqu, char *extra)
1443 {
1444 strlcpy(wrqu->name, "IEEE 802.11-DS", sizeof(wrqu->name));
1445 return 0;
1446 }
1447
1448 static int wl3501_set_freq(struct net_device *dev, struct iw_request_info *info,
1449 union iwreq_data *wrqu, char *extra)
1450 {
1451 struct wl3501_card *this = netdev_priv(dev);
1452 int channel = wrqu->freq.m;
1453 int rc = -EINVAL;
1454
1455 if (iw_valid_channel(this->reg_domain, channel)) {
1456 this->chan = channel;
1457 rc = wl3501_reset(dev);
1458 }
1459 return rc;
1460 }
1461
1462 static int wl3501_get_freq(struct net_device *dev, struct iw_request_info *info,
1463 union iwreq_data *wrqu, char *extra)
1464 {
1465 struct wl3501_card *this = netdev_priv(dev);
1466
1467 wrqu->freq.m = 100000 *
1468 ieee80211_channel_to_frequency(this->chan, NL80211_BAND_2GHZ);
1469 wrqu->freq.e = 1;
1470 return 0;
1471 }
1472
1473 static int wl3501_set_mode(struct net_device *dev, struct iw_request_info *info,
1474 union iwreq_data *wrqu, char *extra)
1475 {
1476 int rc = -EINVAL;
1477
1478 if (wrqu->mode == IW_MODE_INFRA ||
1479 wrqu->mode == IW_MODE_ADHOC ||
1480 wrqu->mode == IW_MODE_AUTO) {
1481 struct wl3501_card *this = netdev_priv(dev);
1482
1483 this->net_type = wrqu->mode;
1484 rc = wl3501_reset(dev);
1485 }
1486 return rc;
1487 }
1488
1489 static int wl3501_get_mode(struct net_device *dev, struct iw_request_info *info,
1490 union iwreq_data *wrqu, char *extra)
1491 {
1492 struct wl3501_card *this = netdev_priv(dev);
1493
1494 wrqu->mode = this->net_type;
1495 return 0;
1496 }
1497
1498 static int wl3501_get_sens(struct net_device *dev, struct iw_request_info *info,
1499 union iwreq_data *wrqu, char *extra)
1500 {
1501 struct wl3501_card *this = netdev_priv(dev);
1502
1503 wrqu->sens.value = this->rssi;
1504 wrqu->sens.disabled = !wrqu->sens.value;
1505 wrqu->sens.fixed = 1;
1506 return 0;
1507 }
1508
1509 static int wl3501_get_range(struct net_device *dev,
1510 struct iw_request_info *info,
1511 union iwreq_data *wrqu, char *extra)
1512 {
1513 struct iw_range *range = (struct iw_range *)extra;
1514
1515 /* Set the length (very important for backward compatibility) */
1516 wrqu->data.length = sizeof(*range);
1517
1518 /* Set all the info we don't care or don't know about to zero */
1519 memset(range, 0, sizeof(*range));
1520
1521 /* Set the Wireless Extension versions */
1522 range->we_version_compiled = WIRELESS_EXT;
1523 range->we_version_source = 1;
1524 range->throughput = 2 * 1000 * 1000; /* ~2 Mb/s */
1525 /* FIXME: study the code to fill in more fields... */
1526 return 0;
1527 }
1528
1529 static int wl3501_set_wap(struct net_device *dev, struct iw_request_info *info,
1530 union iwreq_data *wrqu, char *extra)
1531 {
1532 struct wl3501_card *this = netdev_priv(dev);
1533 int rc = -EINVAL;
1534
1535 /* FIXME: we support other ARPHRDs...*/
1536 if (wrqu->ap_addr.sa_family != ARPHRD_ETHER)
1537 goto out;
1538 if (is_broadcast_ether_addr(wrqu->ap_addr.sa_data)) {
1539 /* FIXME: rescan? */
1540 } else
1541 memcpy(this->bssid, wrqu->ap_addr.sa_data, ETH_ALEN);
1542 /* FIXME: rescan? deassoc & scan? */
1543 rc = 0;
1544 out:
1545 return rc;
1546 }
1547
1548 static int wl3501_get_wap(struct net_device *dev, struct iw_request_info *info,
1549 union iwreq_data *wrqu, char *extra)
1550 {
1551 struct wl3501_card *this = netdev_priv(dev);
1552
1553 wrqu->ap_addr.sa_family = ARPHRD_ETHER;
1554 memcpy(wrqu->ap_addr.sa_data, this->bssid, ETH_ALEN);
1555 return 0;
1556 }
1557
1558 static int wl3501_set_scan(struct net_device *dev, struct iw_request_info *info,
1559 union iwreq_data *wrqu, char *extra)
1560 {
1561 /*
1562 * FIXME: trigger scanning with a reset, yes, I'm lazy
1563 */
1564 return wl3501_reset(dev);
1565 }
1566
1567 static int wl3501_get_scan(struct net_device *dev, struct iw_request_info *info,
1568 union iwreq_data *wrqu, char *extra)
1569 {
1570 struct wl3501_card *this = netdev_priv(dev);
1571 int i;
1572 char *current_ev = extra;
1573 struct iw_event iwe;
1574
1575 for (i = 0; i < this->bss_cnt; ++i) {
1576 iwe.cmd = SIOCGIWAP;
1577 iwe.u.ap_addr.sa_family = ARPHRD_ETHER;
1578 memcpy(iwe.u.ap_addr.sa_data, this->bss_set[i].bssid, ETH_ALEN);
1579 current_ev = iwe_stream_add_event(info, current_ev,
1580 extra + IW_SCAN_MAX_DATA,
1581 &iwe, IW_EV_ADDR_LEN);
1582 iwe.cmd = SIOCGIWESSID;
1583 iwe.u.data.flags = 1;
1584 iwe.u.data.length = this->bss_set[i].ssid.el.len;
1585 current_ev = iwe_stream_add_point(info, current_ev,
1586 extra + IW_SCAN_MAX_DATA,
1587 &iwe,
1588 this->bss_set[i].ssid.essid);
1589 iwe.cmd = SIOCGIWMODE;
1590 iwe.u.mode = this->bss_set[i].bss_type;
1591 current_ev = iwe_stream_add_event(info, current_ev,
1592 extra + IW_SCAN_MAX_DATA,
1593 &iwe, IW_EV_UINT_LEN);
1594 iwe.cmd = SIOCGIWFREQ;
1595 iwe.u.freq.m = this->bss_set[i].ds_pset.chan;
1596 iwe.u.freq.e = 0;
1597 current_ev = iwe_stream_add_event(info, current_ev,
1598 extra + IW_SCAN_MAX_DATA,
1599 &iwe, IW_EV_FREQ_LEN);
1600 iwe.cmd = SIOCGIWENCODE;
1601 if (this->bss_set[i].cap_info & WL3501_MGMT_CAPABILITY_PRIVACY)
1602 iwe.u.data.flags = IW_ENCODE_ENABLED | IW_ENCODE_NOKEY;
1603 else
1604 iwe.u.data.flags = IW_ENCODE_DISABLED;
1605 iwe.u.data.length = 0;
1606 current_ev = iwe_stream_add_point(info, current_ev,
1607 extra + IW_SCAN_MAX_DATA,
1608 &iwe, NULL);
1609 }
1610 /* Length of data */
1611 wrqu->data.length = (current_ev - extra);
1612 wrqu->data.flags = 0; /* FIXME: set properly these flags */
1613 return 0;
1614 }
1615
1616 static int wl3501_set_essid(struct net_device *dev,
1617 struct iw_request_info *info,
1618 union iwreq_data *wrqu, char *extra)
1619 {
1620 struct wl3501_card *this = netdev_priv(dev);
1621
1622 if (wrqu->data.flags) {
1623 iw_set_mgmt_info_element(IW_MGMT_INFO_ELEMENT_SSID,
1624 &this->essid.el,
1625 extra, wrqu->data.length);
1626 } else { /* We accept any ESSID */
1627 iw_set_mgmt_info_element(IW_MGMT_INFO_ELEMENT_SSID,
1628 &this->essid.el, "ANY", 3);
1629 }
1630 return wl3501_reset(dev);
1631 }
1632
1633 static int wl3501_get_essid(struct net_device *dev,
1634 struct iw_request_info *info,
1635 union iwreq_data *wrqu, char *extra)
1636 {
1637 struct wl3501_card *this = netdev_priv(dev);
1638 unsigned long flags;
1639
1640 spin_lock_irqsave(&this->lock, flags);
1641 wrqu->essid.flags = 1;
1642 wrqu->essid.length = this->essid.el.len;
1643 memcpy(extra, this->essid.essid, this->essid.el.len);
1644 spin_unlock_irqrestore(&this->lock, flags);
1645 return 0;
1646 }
1647
1648 static int wl3501_set_nick(struct net_device *dev, struct iw_request_info *info,
1649 union iwreq_data *wrqu, char *extra)
1650 {
1651 struct wl3501_card *this = netdev_priv(dev);
1652
1653 if (wrqu->data.length > sizeof(this->nick))
1654 return -E2BIG;
1655 strlcpy(this->nick, extra, wrqu->data.length);
1656 return 0;
1657 }
1658
1659 static int wl3501_get_nick(struct net_device *dev, struct iw_request_info *info,
1660 union iwreq_data *wrqu, char *extra)
1661 {
1662 struct wl3501_card *this = netdev_priv(dev);
1663
1664 strlcpy(extra, this->nick, 32);
1665 wrqu->data.length = strlen(extra);
1666 return 0;
1667 }
1668
1669 static int wl3501_get_rate(struct net_device *dev, struct iw_request_info *info,
1670 union iwreq_data *wrqu, char *extra)
1671 {
1672 /*
1673 * FIXME: have to see from where to get this info, perhaps this card
1674 * works at 1 Mbit/s too... for now leave at 2 Mbit/s that is the most
1675 * common with the Planet Access Points. -acme
1676 */
1677 wrqu->bitrate.value = 2000000;
1678 wrqu->bitrate.fixed = 1;
1679 return 0;
1680 }
1681
1682 static int wl3501_get_rts_threshold(struct net_device *dev,
1683 struct iw_request_info *info,
1684 union iwreq_data *wrqu, char *extra)
1685 {
1686 u16 threshold; /* size checked: it is u16 */
1687 struct wl3501_card *this = netdev_priv(dev);
1688 int rc = wl3501_get_mib_value(this, WL3501_MIB_ATTR_RTS_THRESHOLD,
1689 &threshold, sizeof(threshold));
1690 if (!rc) {
1691 wrqu->rts.value = threshold;
1692 wrqu->rts.disabled = threshold >= 2347;
1693 wrqu->rts.fixed = 1;
1694 }
1695 return rc;
1696 }
1697
1698 static int wl3501_get_frag_threshold(struct net_device *dev,
1699 struct iw_request_info *info,
1700 union iwreq_data *wrqu, char *extra)
1701 {
1702 u16 threshold; /* size checked: it is u16 */
1703 struct wl3501_card *this = netdev_priv(dev);
1704 int rc = wl3501_get_mib_value(this, WL3501_MIB_ATTR_FRAG_THRESHOLD,
1705 &threshold, sizeof(threshold));
1706 if (!rc) {
1707 wrqu->frag.value = threshold;
1708 wrqu->frag.disabled = threshold >= 2346;
1709 wrqu->frag.fixed = 1;
1710 }
1711 return rc;
1712 }
1713
1714 static int wl3501_get_txpow(struct net_device *dev,
1715 struct iw_request_info *info,
1716 union iwreq_data *wrqu, char *extra)
1717 {
1718 u16 txpow;
1719 struct wl3501_card *this = netdev_priv(dev);
1720 int rc = wl3501_get_mib_value(this,
1721 WL3501_MIB_ATTR_CURRENT_TX_PWR_LEVEL,
1722 &txpow, sizeof(txpow));
1723 if (!rc) {
1724 wrqu->txpower.value = txpow;
1725 wrqu->txpower.disabled = 0;
1726 /*
1727 * From the MIB values I think this can be configurable,
1728 * as it lists several tx power levels -acme
1729 */
1730 wrqu->txpower.fixed = 0;
1731 wrqu->txpower.flags = IW_TXPOW_MWATT;
1732 }
1733 return rc;
1734 }
1735
1736 static int wl3501_get_retry(struct net_device *dev,
1737 struct iw_request_info *info,
1738 union iwreq_data *wrqu, char *extra)
1739 {
1740 u8 retry; /* size checked: it is u8 */
1741 struct wl3501_card *this = netdev_priv(dev);
1742 int rc = wl3501_get_mib_value(this,
1743 WL3501_MIB_ATTR_LONG_RETRY_LIMIT,
1744 &retry, sizeof(retry));
1745 if (rc)
1746 goto out;
1747 if (wrqu->retry.flags & IW_RETRY_LONG) {
1748 wrqu->retry.flags = IW_RETRY_LIMIT | IW_RETRY_LONG;
1749 goto set_value;
1750 }
1751 rc = wl3501_get_mib_value(this, WL3501_MIB_ATTR_SHORT_RETRY_LIMIT,
1752 &retry, sizeof(retry));
1753 if (rc)
1754 goto out;
1755 wrqu->retry.flags = IW_RETRY_LIMIT | IW_RETRY_SHORT;
1756 set_value:
1757 wrqu->retry.value = retry;
1758 wrqu->retry.disabled = 0;
1759 out:
1760 return rc;
1761 }
1762
1763 static int wl3501_get_encode(struct net_device *dev,
1764 struct iw_request_info *info,
1765 union iwreq_data *wrqu, char *extra)
1766 {
1767 u8 implemented, restricted, keys[100], len_keys, tocopy;
1768 struct wl3501_card *this = netdev_priv(dev);
1769 int rc = wl3501_get_mib_value(this,
1770 WL3501_MIB_ATTR_PRIV_OPT_IMPLEMENTED,
1771 &implemented, sizeof(implemented));
1772 if (rc)
1773 goto out;
1774 if (!implemented) {
1775 wrqu->encoding.flags = IW_ENCODE_DISABLED;
1776 goto out;
1777 }
1778 rc = wl3501_get_mib_value(this, WL3501_MIB_ATTR_EXCLUDE_UNENCRYPTED,
1779 &restricted, sizeof(restricted));
1780 if (rc)
1781 goto out;
1782 wrqu->encoding.flags = restricted ? IW_ENCODE_RESTRICTED :
1783 IW_ENCODE_OPEN;
1784 rc = wl3501_get_mib_value(this, WL3501_MIB_ATTR_WEP_KEY_MAPPINGS_LEN,
1785 &len_keys, sizeof(len_keys));
1786 if (rc)
1787 goto out;
1788 rc = wl3501_get_mib_value(this, WL3501_MIB_ATTR_WEP_KEY_MAPPINGS,
1789 keys, len_keys);
1790 if (rc)
1791 goto out;
1792 tocopy = min_t(u16, len_keys, wrqu->encoding.length);
1793 tocopy = min_t(u8, tocopy, 100);
1794 wrqu->encoding.length = tocopy;
1795 memcpy(extra, keys, tocopy);
1796 out:
1797 return rc;
1798 }
1799
1800 static int wl3501_get_power(struct net_device *dev,
1801 struct iw_request_info *info,
1802 union iwreq_data *wrqu, char *extra)
1803 {
1804 u8 pwr_state;
1805 struct wl3501_card *this = netdev_priv(dev);
1806 int rc = wl3501_get_mib_value(this,
1807 WL3501_MIB_ATTR_CURRENT_PWR_STATE,
1808 &pwr_state, sizeof(pwr_state));
1809 if (rc)
1810 goto out;
1811 wrqu->power.disabled = !pwr_state;
1812 wrqu->power.flags = IW_POWER_ON;
1813 out:
1814 return rc;
1815 }
1816
1817 static const iw_handler wl3501_handler[] = {
1818 IW_HANDLER(SIOCGIWNAME, wl3501_get_name),
1819 IW_HANDLER(SIOCSIWFREQ, wl3501_set_freq),
1820 IW_HANDLER(SIOCGIWFREQ, wl3501_get_freq),
1821 IW_HANDLER(SIOCSIWMODE, wl3501_set_mode),
1822 IW_HANDLER(SIOCGIWMODE, wl3501_get_mode),
1823 IW_HANDLER(SIOCGIWSENS, wl3501_get_sens),
1824 IW_HANDLER(SIOCGIWRANGE, wl3501_get_range),
1825 IW_HANDLER(SIOCSIWSPY, iw_handler_set_spy),
1826 IW_HANDLER(SIOCGIWSPY, iw_handler_get_spy),
1827 IW_HANDLER(SIOCSIWTHRSPY, iw_handler_set_thrspy),
1828 IW_HANDLER(SIOCGIWTHRSPY, iw_handler_get_thrspy),
1829 IW_HANDLER(SIOCSIWAP, wl3501_set_wap),
1830 IW_HANDLER(SIOCGIWAP, wl3501_get_wap),
1831 IW_HANDLER(SIOCSIWSCAN, wl3501_set_scan),
1832 IW_HANDLER(SIOCGIWSCAN, wl3501_get_scan),
1833 IW_HANDLER(SIOCSIWESSID, wl3501_set_essid),
1834 IW_HANDLER(SIOCGIWESSID, wl3501_get_essid),
1835 IW_HANDLER(SIOCSIWNICKN, wl3501_set_nick),
1836 IW_HANDLER(SIOCGIWNICKN, wl3501_get_nick),
1837 IW_HANDLER(SIOCGIWRATE, wl3501_get_rate),
1838 IW_HANDLER(SIOCGIWRTS, wl3501_get_rts_threshold),
1839 IW_HANDLER(SIOCGIWFRAG, wl3501_get_frag_threshold),
1840 IW_HANDLER(SIOCGIWTXPOW, wl3501_get_txpow),
1841 IW_HANDLER(SIOCGIWRETRY, wl3501_get_retry),
1842 IW_HANDLER(SIOCGIWENCODE, wl3501_get_encode),
1843 IW_HANDLER(SIOCGIWPOWER, wl3501_get_power),
1844 };
1845
1846 static const struct iw_handler_def wl3501_handler_def = {
1847 .num_standard = ARRAY_SIZE(wl3501_handler),
1848 .standard = (iw_handler *)wl3501_handler,
1849 .get_wireless_stats = wl3501_get_wireless_stats,
1850 };
1851
1852 static const struct net_device_ops wl3501_netdev_ops = {
1853 .ndo_open = wl3501_open,
1854 .ndo_stop = wl3501_close,
1855 .ndo_start_xmit = wl3501_hard_start_xmit,
1856 .ndo_tx_timeout = wl3501_tx_timeout,
1857 .ndo_change_mtu = eth_change_mtu,
1858 .ndo_set_mac_address = eth_mac_addr,
1859 .ndo_validate_addr = eth_validate_addr,
1860 };
1861
1862 static int wl3501_probe(struct pcmcia_device *p_dev)
1863 {
1864 struct net_device *dev;
1865 struct wl3501_card *this;
1866
1867 /* The io structure describes IO port mapping */
1868 p_dev->resource[0]->end = 16;
1869 p_dev->resource[0]->flags = IO_DATA_PATH_WIDTH_8;
1870
1871 /* General socket configuration */
1872 p_dev->config_flags = CONF_ENABLE_IRQ;
1873 p_dev->config_index = 1;
1874
1875 dev = alloc_etherdev(sizeof(struct wl3501_card));
1876 if (!dev)
1877 goto out_link;
1878
1879
1880 dev->netdev_ops = &wl3501_netdev_ops;
1881 dev->watchdog_timeo = 5 * HZ;
1882
1883 this = netdev_priv(dev);
1884 this->wireless_data.spy_data = &this->spy_data;
1885 this->p_dev = p_dev;
1886 dev->wireless_data = &this->wireless_data;
1887 dev->wireless_handlers = &wl3501_handler_def;
1888 netif_stop_queue(dev);
1889 p_dev->priv = dev;
1890
1891 return wl3501_config(p_dev);
1892 out_link:
1893 return -ENOMEM;
1894 }
1895
1896 static int wl3501_config(struct pcmcia_device *link)
1897 {
1898 struct net_device *dev = link->priv;
1899 int i = 0, j, ret;
1900 struct wl3501_card *this;
1901
1902 /* Try allocating IO ports. This tries a few fixed addresses. If you
1903 * want, you can also read the card's config table to pick addresses --
1904 * see the serial driver for an example. */
1905 link->io_lines = 5;
1906
1907 for (j = 0x280; j < 0x400; j += 0x20) {
1908 /* The '^0x300' is so that we probe 0x300-0x3ff first, then
1909 * 0x200-0x2ff, and so on, because this seems safer */
1910 link->resource[0]->start = j;
1911 link->resource[1]->start = link->resource[0]->start + 0x10;
1912 i = pcmcia_request_io(link);
1913 if (i == 0)
1914 break;
1915 }
1916 if (i != 0)
1917 goto failed;
1918
1919 /* Now allocate an interrupt line. Note that this does not actually
1920 * assign a handler to the interrupt. */
1921
1922 ret = pcmcia_request_irq(link, wl3501_interrupt);
1923 if (ret)
1924 goto failed;
1925
1926 ret = pcmcia_enable_device(link);
1927 if (ret)
1928 goto failed;
1929
1930 dev->irq = link->irq;
1931 dev->base_addr = link->resource[0]->start;
1932 SET_NETDEV_DEV(dev, &link->dev);
1933 if (register_netdev(dev)) {
1934 printk(KERN_NOTICE "wl3501_cs: register_netdev() failed\n");
1935 goto failed;
1936 }
1937
1938 this = netdev_priv(dev);
1939
1940 this->base_addr = dev->base_addr;
1941
1942 if (!wl3501_get_flash_mac_addr(this)) {
1943 printk(KERN_WARNING "%s: Can't read MAC addr in flash ROM?\n",
1944 dev->name);
1945 unregister_netdev(dev);
1946 goto failed;
1947 }
1948
1949 for (i = 0; i < 6; i++)
1950 dev->dev_addr[i] = ((char *)&this->mac_addr)[i];
1951
1952 /* print probe information */
1953 printk(KERN_INFO "%s: wl3501 @ 0x%3.3x, IRQ %d, "
1954 "MAC addr in flash ROM:%pM\n",
1955 dev->name, this->base_addr, (int)dev->irq,
1956 dev->dev_addr);
1957 /*
1958 * Initialize card parameters - added by jss
1959 */
1960 this->net_type = IW_MODE_INFRA;
1961 this->bss_cnt = 0;
1962 this->join_sta_bss = 0;
1963 this->adhoc_times = 0;
1964 iw_set_mgmt_info_element(IW_MGMT_INFO_ELEMENT_SSID, &this->essid.el,
1965 "ANY", 3);
1966 this->card_name[0] = '\0';
1967 this->firmware_date[0] = '\0';
1968 this->rssi = 255;
1969 this->chan = iw_default_channel(this->reg_domain);
1970 strlcpy(this->nick, "Planet WL3501", sizeof(this->nick));
1971 spin_lock_init(&this->lock);
1972 init_waitqueue_head(&this->wait);
1973 netif_start_queue(dev);
1974 return 0;
1975
1976 failed:
1977 wl3501_release(link);
1978 return -ENODEV;
1979 }
1980
1981 static void wl3501_release(struct pcmcia_device *link)
1982 {
1983 pcmcia_disable_device(link);
1984 }
1985
1986 static int wl3501_suspend(struct pcmcia_device *link)
1987 {
1988 struct net_device *dev = link->priv;
1989
1990 wl3501_pwr_mgmt(netdev_priv(dev), WL3501_SUSPEND);
1991 if (link->open)
1992 netif_device_detach(dev);
1993
1994 return 0;
1995 }
1996
1997 static int wl3501_resume(struct pcmcia_device *link)
1998 {
1999 struct net_device *dev = link->priv;
2000
2001 wl3501_pwr_mgmt(netdev_priv(dev), WL3501_RESUME);
2002 if (link->open) {
2003 wl3501_reset(dev);
2004 netif_device_attach(dev);
2005 }
2006
2007 return 0;
2008 }
2009
2010
2011 static const struct pcmcia_device_id wl3501_ids[] = {
2012 PCMCIA_DEVICE_MANF_CARD(0xd601, 0x0001),
2013 PCMCIA_DEVICE_NULL
2014 };
2015 MODULE_DEVICE_TABLE(pcmcia, wl3501_ids);
2016
2017 static struct pcmcia_driver wl3501_driver = {
2018 .owner = THIS_MODULE,
2019 .name = "wl3501_cs",
2020 .probe = wl3501_probe,
2021 .remove = wl3501_detach,
2022 .id_table = wl3501_ids,
2023 .suspend = wl3501_suspend,
2024 .resume = wl3501_resume,
2025 };
2026 module_pcmcia_driver(wl3501_driver);
2027
2028 MODULE_AUTHOR("Fox Chen <mhchen@golf.ccl.itri.org.tw>, "
2029 "Arnaldo Carvalho de Melo <acme@conectiva.com.br>,"
2030 "Gustavo Niemeyer <niemeyer@conectiva.com>");
2031 MODULE_DESCRIPTION("Planet wl3501 wireless driver");
2032 MODULE_LICENSE("GPL");
Linux kernel - Deliverables
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