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OMAPDSS: VENC: fix NULL pointer dereference in DSS2 VENC sysfs debug attr on OMAP4
[zen-stable.git] / drivers / net / wireless / wl3501_cs.c
blob98fbf54f6004144e832f713034728a8b302c45ee
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/init.h>
33 #include <linux/interrupt.h>
34 #include <linux/in.h>
35 #include <linux/kernel.h>
36 #include <linux/module.h>
37 #include <linux/fcntl.h>
38 #include <linux/if_arp.h>
39 #include <linux/ioport.h>
40 #include <linux/netdevice.h>
41 #include <linux/etherdevice.h>
42 #include <linux/skbuff.h>
43 #include <linux/slab.h>
44 #include <linux/string.h>
45 #include <linux/wireless.h>
46 #include <linux/ieee80211.h>
47
48 #include <net/iw_handler.h>
49
50 #include <pcmcia/cistpl.h>
51 #include <pcmcia/cisreg.h>
52 #include <pcmcia/ds.h>
53
54 #include <asm/io.h>
55 #include <asm/uaccess.h>
56 #include <asm/system.h>
57
58 #include "wl3501.h"
59
60 #ifndef __i386__
61 #define slow_down_io()
62 #endif
63
64 /* For rough constant delay */
65 #define WL3501_NOPLOOP(n) { int x = 0; while (x++ < n) slow_down_io(); }
66
67
68
69 #define wl3501_outb(a, b) { outb(a, b); slow_down_io(); }
70 #define wl3501_outb_p(a, b) { outb_p(a, b); slow_down_io(); }
71 #define wl3501_outsb(a, b, c) { outsb(a, b, c); slow_down_io(); }
72
73 #define WL3501_RELEASE_TIMEOUT (25 * HZ)
74 #define WL3501_MAX_ADHOC_TRIES 16
75
76 #define WL3501_RESUME 0
77 #define WL3501_SUSPEND 1
78
79 static int wl3501_config(struct pcmcia_device *link);
80 static void wl3501_release(struct pcmcia_device *link);
81
82 static const struct {
83 int reg_domain;
84 int min, max, deflt;
85 } iw_channel_table[] = {
86 {
87 .reg_domain = IW_REG_DOMAIN_FCC,
88 .min = 1,
89 .max = 11,
90 .deflt = 1,
91 },
92 {
93 .reg_domain = IW_REG_DOMAIN_DOC,
94 .min = 1,
95 .max = 11,
96 .deflt = 1,
97 },
98 {
99 .reg_domain = IW_REG_DOMAIN_ETSI,
100 .min = 1,
101 .max = 13,
102 .deflt = 1,
103 },
104 {
105 .reg_domain = IW_REG_DOMAIN_SPAIN,
106 .min = 10,
107 .max = 11,
108 .deflt = 10,
109 },
110 {
111 .reg_domain = IW_REG_DOMAIN_FRANCE,
112 .min = 10,
113 .max = 13,
114 .deflt = 10,
115 },
116 {
117 .reg_domain = IW_REG_DOMAIN_MKK,
118 .min = 14,
119 .max = 14,
120 .deflt = 14,
121 },
122 {
123 .reg_domain = IW_REG_DOMAIN_MKK1,
124 .min = 1,
125 .max = 14,
126 .deflt = 1,
127 },
128 {
129 .reg_domain = IW_REG_DOMAIN_ISRAEL,
130 .min = 3,
131 .max = 9,
132 .deflt = 9,
133 },
134 };
135
136 /**
137 * iw_valid_channel - validate channel in regulatory domain
138 * @reg_comain - regulatory domain
139 * @channel - channel to validate
140 *
141 * Returns 0 if invalid in the specified regulatory domain, non-zero if valid.
142 */
143 static int iw_valid_channel(int reg_domain, int channel)
144 {
145 int i, rc = 0;
146
147 for (i = 0; i < ARRAY_SIZE(iw_channel_table); i++)
148 if (reg_domain == iw_channel_table[i].reg_domain) {
149 rc = channel >= iw_channel_table[i].min &&
150 channel <= iw_channel_table[i].max;
151 break;
152 }
153 return rc;
154 }
155
156 /**
157 * iw_default_channel - get default channel for a regulatory domain
158 * @reg_comain - regulatory domain
159 *
160 * Returns the default channel for a regulatory domain
161 */
162 static int iw_default_channel(int reg_domain)
163 {
164 int i, rc = 1;
165
166 for (i = 0; i < ARRAY_SIZE(iw_channel_table); i++)
167 if (reg_domain == iw_channel_table[i].reg_domain) {
168 rc = iw_channel_table[i].deflt;
169 break;
170 }
171 return rc;
172 }
173
174 static void iw_set_mgmt_info_element(enum iw_mgmt_info_element_ids id,
175 struct iw_mgmt_info_element *el,
176 void *value, int len)
177 {
178 el->id = id;
179 el->len = len;
180 memcpy(el->data, value, len);
181 }
182
183 static void iw_copy_mgmt_info_element(struct iw_mgmt_info_element *to,
184 struct iw_mgmt_info_element *from)
185 {
186 iw_set_mgmt_info_element(from->id, to, from->data, from->len);
187 }
188
189 static inline void wl3501_switch_page(struct wl3501_card *this, u8 page)
190 {
191 wl3501_outb(page, this->base_addr + WL3501_NIC_BSS);
192 }
193
194 /*
195 * Get Ethernet MAC address.
196 *
197 * WARNING: We switch to FPAGE0 and switc back again.
198 * Making sure there is no other WL function beening called by ISR.
199 */
200 static int wl3501_get_flash_mac_addr(struct wl3501_card *this)
201 {
202 int base_addr = this->base_addr;
203
204 /* get MAC addr */
205 wl3501_outb(WL3501_BSS_FPAGE3, base_addr + WL3501_NIC_BSS); /* BSS */
206 wl3501_outb(0x00, base_addr + WL3501_NIC_LMAL); /* LMAL */
207 wl3501_outb(0x40, base_addr + WL3501_NIC_LMAH); /* LMAH */
208
209 /* wait for reading EEPROM */
210 WL3501_NOPLOOP(100);
211 this->mac_addr[0] = inb(base_addr + WL3501_NIC_IODPA);
212 WL3501_NOPLOOP(100);
213 this->mac_addr[1] = inb(base_addr + WL3501_NIC_IODPA);
214 WL3501_NOPLOOP(100);
215 this->mac_addr[2] = inb(base_addr + WL3501_NIC_IODPA);
216 WL3501_NOPLOOP(100);
217 this->mac_addr[3] = inb(base_addr + WL3501_NIC_IODPA);
218 WL3501_NOPLOOP(100);
219 this->mac_addr[4] = inb(base_addr + WL3501_NIC_IODPA);
220 WL3501_NOPLOOP(100);
221 this->mac_addr[5] = inb(base_addr + WL3501_NIC_IODPA);
222 WL3501_NOPLOOP(100);
223 this->reg_domain = inb(base_addr + WL3501_NIC_IODPA);
224 WL3501_NOPLOOP(100);
225 wl3501_outb(WL3501_BSS_FPAGE0, base_addr + WL3501_NIC_BSS);
226 wl3501_outb(0x04, base_addr + WL3501_NIC_LMAL);
227 wl3501_outb(0x40, base_addr + WL3501_NIC_LMAH);
228 WL3501_NOPLOOP(100);
229 this->version[0] = inb(base_addr + WL3501_NIC_IODPA);
230 WL3501_NOPLOOP(100);
231 this->version[1] = inb(base_addr + WL3501_NIC_IODPA);
232 /* switch to SRAM Page 0 (for safety) */
233 wl3501_switch_page(this, WL3501_BSS_SPAGE0);
234
235 /* The MAC addr should be 00:60:... */
236 return this->mac_addr[0] == 0x00 && this->mac_addr[1] == 0x60;
237 }
238
239 /**
240 * wl3501_set_to_wla - Move 'size' bytes from PC to card
241 * @dest: Card addressing space
242 * @src: PC addressing space
243 * @size: Bytes to move
244 *
245 * Move 'size' bytes from PC to card. (Shouldn't be interrupted)
246 */
247 static void wl3501_set_to_wla(struct wl3501_card *this, u16 dest, void *src,
248 int size)
249 {
250 /* switch to SRAM Page 0 */
251 wl3501_switch_page(this, (dest & 0x8000) ? WL3501_BSS_SPAGE1 :
252 WL3501_BSS_SPAGE0);
253 /* set LMAL and LMAH */
254 wl3501_outb(dest & 0xff, this->base_addr + WL3501_NIC_LMAL);
255 wl3501_outb(((dest >> 8) & 0x7f), this->base_addr + WL3501_NIC_LMAH);
256
257 /* rep out to Port A */
258 wl3501_outsb(this->base_addr + WL3501_NIC_IODPA, src, size);
259 }
260
261 /**
262 * wl3501_get_from_wla - Move 'size' bytes from card to PC
263 * @src: Card addressing space
264 * @dest: PC addressing space
265 * @size: Bytes to move
266 *
267 * Move 'size' bytes from card to PC. (Shouldn't be interrupted)
268 */
269 static void wl3501_get_from_wla(struct wl3501_card *this, u16 src, void *dest,
270 int size)
271 {
272 /* switch to SRAM Page 0 */
273 wl3501_switch_page(this, (src & 0x8000) ? WL3501_BSS_SPAGE1 :
274 WL3501_BSS_SPAGE0);
275 /* set LMAL and LMAH */
276 wl3501_outb(src & 0xff, this->base_addr + WL3501_NIC_LMAL);
277 wl3501_outb((src >> 8) & 0x7f, this->base_addr + WL3501_NIC_LMAH);
278
279 /* rep get from Port A */
280 insb(this->base_addr + WL3501_NIC_IODPA, dest, size);
281 }
282
283 /*
284 * Get/Allocate a free Tx Data Buffer
285 *
286 * *--------------*-----------------*----------------------------------*
287 * | PLCP | MAC Header | DST SRC Data ... |
288 * | (24 bytes) | (30 bytes) | (6) (6) (Ethernet Row Data) |
289 * *--------------*-----------------*----------------------------------*
290 * \ \- IEEE 802.11 -/ \-------------- len --------------/
291 * \-struct wl3501_80211_tx_hdr--/ \-------- Ethernet Frame -------/
292 *
293 * Return = Position in Card
294 */
295 static u16 wl3501_get_tx_buffer(struct wl3501_card *this, u16 len)
296 {
297 u16 next, blk_cnt = 0, zero = 0;
298 u16 full_len = sizeof(struct wl3501_80211_tx_hdr) + len;
299 u16 ret = 0;
300
301 if (full_len > this->tx_buffer_cnt * 254)
302 goto out;
303 ret = this->tx_buffer_head;
304 while (full_len) {
305 if (full_len < 254)
306 full_len = 0;
307 else
308 full_len -= 254;
309 wl3501_get_from_wla(this, this->tx_buffer_head, &next,
310 sizeof(next));
311 if (!full_len)
312 wl3501_set_to_wla(this, this->tx_buffer_head, &zero,
313 sizeof(zero));
314 this->tx_buffer_head = next;
315 blk_cnt++;
316 /* if buffer is not enough */
317 if (!next && full_len) {
318 this->tx_buffer_head = ret;
319 ret = 0;
320 goto out;
321 }
322 }
323 this->tx_buffer_cnt -= blk_cnt;
324 out:
325 return ret;
326 }
327
328 /*
329 * Free an allocated Tx Buffer. ptr must be correct position.
330 */
331 static void wl3501_free_tx_buffer(struct wl3501_card *this, u16 ptr)
332 {
333 /* check if all space is not free */
334 if (!this->tx_buffer_head)
335 this->tx_buffer_head = ptr;
336 else
337 wl3501_set_to_wla(this, this->tx_buffer_tail,
338 &ptr, sizeof(ptr));
339 while (ptr) {
340 u16 next;
341
342 this->tx_buffer_cnt++;
343 wl3501_get_from_wla(this, ptr, &next, sizeof(next));
344 this->tx_buffer_tail = ptr;
345 ptr = next;
346 }
347 }
348
349 static int wl3501_esbq_req_test(struct wl3501_card *this)
350 {
351 u8 tmp = 0;
352
353 wl3501_get_from_wla(this, this->esbq_req_head + 3, &tmp, sizeof(tmp));
354 return tmp & 0x80;
355 }
356
357 static void wl3501_esbq_req(struct wl3501_card *this, u16 *ptr)
358 {
359 u16 tmp = 0;
360
361 wl3501_set_to_wla(this, this->esbq_req_head, ptr, 2);
362 wl3501_set_to_wla(this, this->esbq_req_head + 2, &tmp, sizeof(tmp));
363 this->esbq_req_head += 4;
364 if (this->esbq_req_head >= this->esbq_req_end)
365 this->esbq_req_head = this->esbq_req_start;
366 }
367
368 static int wl3501_esbq_exec(struct wl3501_card *this, void *sig, int sig_size)
369 {
370 int rc = -EIO;
371
372 if (wl3501_esbq_req_test(this)) {
373 u16 ptr = wl3501_get_tx_buffer(this, sig_size);
374 if (ptr) {
375 wl3501_set_to_wla(this, ptr, sig, sig_size);
376 wl3501_esbq_req(this, &ptr);
377 rc = 0;
378 }
379 }
380 return rc;
381 }
382
383 static int wl3501_get_mib_value(struct wl3501_card *this, u8 index,
384 void *bf, int size)
385 {
386 struct wl3501_get_req sig = {
387 .sig_id = WL3501_SIG_GET_REQ,
388 .mib_attrib = index,
389 };
390 unsigned long flags;
391 int rc = -EIO;
392
393 spin_lock_irqsave(&this->lock, flags);
394 if (wl3501_esbq_req_test(this)) {
395 u16 ptr = wl3501_get_tx_buffer(this, sizeof(sig));
396 if (ptr) {
397 wl3501_set_to_wla(this, ptr, &sig, sizeof(sig));
398 wl3501_esbq_req(this, &ptr);
399 this->sig_get_confirm.mib_status = 255;
400 spin_unlock_irqrestore(&this->lock, flags);
401 rc = wait_event_interruptible(this->wait,
402 this->sig_get_confirm.mib_status != 255);
403 if (!rc)
404 memcpy(bf, this->sig_get_confirm.mib_value,
405 size);
406 goto out;
407 }
408 }
409 spin_unlock_irqrestore(&this->lock, flags);
410 out:
411 return rc;
412 }
413
414 static int wl3501_pwr_mgmt(struct wl3501_card *this, int suspend)
415 {
416 struct wl3501_pwr_mgmt_req sig = {
417 .sig_id = WL3501_SIG_PWR_MGMT_REQ,
418 .pwr_save = suspend,
419 .wake_up = !suspend,
420 .receive_dtims = 10,
421 };
422 unsigned long flags;
423 int rc = -EIO;
424
425 spin_lock_irqsave(&this->lock, flags);
426 if (wl3501_esbq_req_test(this)) {
427 u16 ptr = wl3501_get_tx_buffer(this, sizeof(sig));
428 if (ptr) {
429 wl3501_set_to_wla(this, ptr, &sig, sizeof(sig));
430 wl3501_esbq_req(this, &ptr);
431 this->sig_pwr_mgmt_confirm.status = 255;
432 spin_unlock_irqrestore(&this->lock, flags);
433 rc = wait_event_interruptible(this->wait,
434 this->sig_pwr_mgmt_confirm.status != 255);
435 printk(KERN_INFO "%s: %s status=%d\n", __func__,
436 suspend ? "suspend" : "resume",
437 this->sig_pwr_mgmt_confirm.status);
438 goto out;
439 }
440 }
441 spin_unlock_irqrestore(&this->lock, flags);
442 out:
443 return rc;
444 }
445
446 /**
447 * wl3501_send_pkt - Send a packet.
448 * @this - card
449 *
450 * Send a packet.
451 *
452 * data = Ethernet raw frame. (e.g. data[0] - data[5] is Dest MAC Addr,
453 * data[6] - data[11] is Src MAC Addr)
454 * Ref: IEEE 802.11
455 */
456 static int wl3501_send_pkt(struct wl3501_card *this, u8 *data, u16 len)
457 {
458 u16 bf, sig_bf, next, tmplen, pktlen;
459 struct wl3501_md_req sig = {
460 .sig_id = WL3501_SIG_MD_REQ,
461 };
462 u8 *pdata = (char *)data;
463 int rc = -EIO;
464
465 if (wl3501_esbq_req_test(this)) {
466 sig_bf = wl3501_get_tx_buffer(this, sizeof(sig));
467 rc = -ENOMEM;
468 if (!sig_bf) /* No free buffer available */
469 goto out;
470 bf = wl3501_get_tx_buffer(this, len + 26 + 24);
471 if (!bf) {
472 /* No free buffer available */
473 wl3501_free_tx_buffer(this, sig_bf);
474 goto out;
475 }
476 rc = 0;
477 memcpy(&sig.daddr[0], pdata, 12);
478 pktlen = len - 12;
479 pdata += 12;
480 sig.data = bf;
481 if (((*pdata) * 256 + (*(pdata + 1))) > 1500) {
482 u8 addr4[ETH_ALEN] = {
483 [0] = 0xAA, [1] = 0xAA, [2] = 0x03, [4] = 0x00,
484 };
485
486 wl3501_set_to_wla(this, bf + 2 +
487 offsetof(struct wl3501_tx_hdr, addr4),
488 addr4, sizeof(addr4));
489 sig.size = pktlen + 24 + 4 + 6;
490 if (pktlen > (254 - sizeof(struct wl3501_tx_hdr))) {
491 tmplen = 254 - sizeof(struct wl3501_tx_hdr);
492 pktlen -= tmplen;
493 } else {
494 tmplen = pktlen;
495 pktlen = 0;
496 }
497 wl3501_set_to_wla(this,
498 bf + 2 + sizeof(struct wl3501_tx_hdr),
499 pdata, tmplen);
500 pdata += tmplen;
501 wl3501_get_from_wla(this, bf, &next, sizeof(next));
502 bf = next;
503 } else {
504 sig.size = pktlen + 24 + 4 - 2;
505 pdata += 2;
506 pktlen -= 2;
507 if (pktlen > (254 - sizeof(struct wl3501_tx_hdr) + 6)) {
508 tmplen = 254 - sizeof(struct wl3501_tx_hdr) + 6;
509 pktlen -= tmplen;
510 } else {
511 tmplen = pktlen;
512 pktlen = 0;
513 }
514 wl3501_set_to_wla(this, bf + 2 +
515 offsetof(struct wl3501_tx_hdr, addr4),
516 pdata, tmplen);
517 pdata += tmplen;
518 wl3501_get_from_wla(this, bf, &next, sizeof(next));
519 bf = next;
520 }
521 while (pktlen > 0) {
522 if (pktlen > 254) {
523 tmplen = 254;
524 pktlen -= 254;
525 } else {
526 tmplen = pktlen;
527 pktlen = 0;
528 }
529 wl3501_set_to_wla(this, bf + 2, pdata, tmplen);
530 pdata += tmplen;
531 wl3501_get_from_wla(this, bf, &next, sizeof(next));
532 bf = next;
533 }
534 wl3501_set_to_wla(this, sig_bf, &sig, sizeof(sig));
535 wl3501_esbq_req(this, &sig_bf);
536 }
537 out:
538 return rc;
539 }
540
541 static int wl3501_mgmt_resync(struct wl3501_card *this)
542 {
543 struct wl3501_resync_req sig = {
544 .sig_id = WL3501_SIG_RESYNC_REQ,
545 };
546
547 return wl3501_esbq_exec(this, &sig, sizeof(sig));
548 }
549
550 static inline int wl3501_fw_bss_type(struct wl3501_card *this)
551 {
552 return this->net_type == IW_MODE_INFRA ? WL3501_NET_TYPE_INFRA :
553 WL3501_NET_TYPE_ADHOC;
554 }
555
556 static inline int wl3501_fw_cap_info(struct wl3501_card *this)
557 {
558 return this->net_type == IW_MODE_INFRA ? WL3501_MGMT_CAPABILITY_ESS :
559 WL3501_MGMT_CAPABILITY_IBSS;
560 }
561
562 static int wl3501_mgmt_scan(struct wl3501_card *this, u16 chan_time)
563 {
564 struct wl3501_scan_req sig = {
565 .sig_id = WL3501_SIG_SCAN_REQ,
566 .scan_type = WL3501_SCAN_TYPE_ACTIVE,
567 .probe_delay = 0x10,
568 .min_chan_time = chan_time,
569 .max_chan_time = chan_time,
570 .bss_type = wl3501_fw_bss_type(this),
571 };
572
573 this->bss_cnt = this->join_sta_bss = 0;
574 return wl3501_esbq_exec(this, &sig, sizeof(sig));
575 }
576
577 static int wl3501_mgmt_join(struct wl3501_card *this, u16 stas)
578 {
579 struct wl3501_join_req sig = {
580 .sig_id = WL3501_SIG_JOIN_REQ,
581 .timeout = 10,
582 .ds_pset = {
583 .el = {
584 .id = IW_MGMT_INFO_ELEMENT_DS_PARAMETER_SET,
585 .len = 1,
586 },
587 .chan = this->chan,
588 },
589 };
590
591 memcpy(&sig.beacon_period, &this->bss_set[stas].beacon_period, 72);
592 return wl3501_esbq_exec(this, &sig, sizeof(sig));
593 }
594
595 static int wl3501_mgmt_start(struct wl3501_card *this)
596 {
597 struct wl3501_start_req sig = {
598 .sig_id = WL3501_SIG_START_REQ,
599 .beacon_period = 400,
600 .dtim_period = 1,
601 .ds_pset = {
602 .el = {
603 .id = IW_MGMT_INFO_ELEMENT_DS_PARAMETER_SET,
604 .len = 1,
605 },
606 .chan = this->chan,
607 },
608 .bss_basic_rset = {
609 .el = {
610 .id = IW_MGMT_INFO_ELEMENT_SUPPORTED_RATES,
611 .len = 2,
612 },
613 .data_rate_labels = {
614 [0] = IW_MGMT_RATE_LABEL_MANDATORY |
615 IW_MGMT_RATE_LABEL_1MBIT,
616 [1] = IW_MGMT_RATE_LABEL_MANDATORY |
617 IW_MGMT_RATE_LABEL_2MBIT,
618 },
619 },
620 .operational_rset = {
621 .el = {
622 .id = IW_MGMT_INFO_ELEMENT_SUPPORTED_RATES,
623 .len = 2,
624 },
625 .data_rate_labels = {
626 [0] = IW_MGMT_RATE_LABEL_MANDATORY |
627 IW_MGMT_RATE_LABEL_1MBIT,
628 [1] = IW_MGMT_RATE_LABEL_MANDATORY |
629 IW_MGMT_RATE_LABEL_2MBIT,
630 },
631 },
632 .ibss_pset = {
633 .el = {
634 .id = IW_MGMT_INFO_ELEMENT_IBSS_PARAMETER_SET,
635 .len = 2,
636 },
637 .atim_window = 10,
638 },
639 .bss_type = wl3501_fw_bss_type(this),
640 .cap_info = wl3501_fw_cap_info(this),
641 };
642
643 iw_copy_mgmt_info_element(&sig.ssid.el, &this->essid.el);
644 iw_copy_mgmt_info_element(&this->keep_essid.el, &this->essid.el);
645 return wl3501_esbq_exec(this, &sig, sizeof(sig));
646 }
647
648 static void wl3501_mgmt_scan_confirm(struct wl3501_card *this, u16 addr)
649 {
650 u16 i = 0;
651 int matchflag = 0;
652 struct wl3501_scan_confirm sig;
653
654 pr_debug("entry");
655 wl3501_get_from_wla(this, addr, &sig, sizeof(sig));
656 if (sig.status == WL3501_STATUS_SUCCESS) {
657 pr_debug("success");
658 if ((this->net_type == IW_MODE_INFRA &&
659 (sig.cap_info & WL3501_MGMT_CAPABILITY_ESS)) ||
660 (this->net_type == IW_MODE_ADHOC &&
661 (sig.cap_info & WL3501_MGMT_CAPABILITY_IBSS)) ||
662 this->net_type == IW_MODE_AUTO) {
663 if (!this->essid.el.len)
664 matchflag = 1;
665 else if (this->essid.el.len == 3 &&
666 !memcmp(this->essid.essid, "ANY", 3))
667 matchflag = 1;
668 else if (this->essid.el.len != sig.ssid.el.len)
669 matchflag = 0;
670 else if (memcmp(this->essid.essid, sig.ssid.essid,
671 this->essid.el.len))
672 matchflag = 0;
673 else
674 matchflag = 1;
675 if (matchflag) {
676 for (i = 0; i < this->bss_cnt; i++) {
677 if (!memcmp(this->bss_set[i].bssid,
678 sig.bssid, ETH_ALEN)) {
679 matchflag = 0;
680 break;
681 }
682 }
683 }
684 if (matchflag && (i < 20)) {
685 memcpy(&this->bss_set[i].beacon_period,
686 &sig.beacon_period, 73);
687 this->bss_cnt++;
688 this->rssi = sig.rssi;
689 }
690 }
691 } else if (sig.status == WL3501_STATUS_TIMEOUT) {
692 pr_debug("timeout");
693 this->join_sta_bss = 0;
694 for (i = this->join_sta_bss; i < this->bss_cnt; i++)
695 if (!wl3501_mgmt_join(this, i))
696 break;
697 this->join_sta_bss = i;
698 if (this->join_sta_bss == this->bss_cnt) {
699 if (this->net_type == IW_MODE_INFRA)
700 wl3501_mgmt_scan(this, 100);
701 else {
702 this->adhoc_times++;
703 if (this->adhoc_times > WL3501_MAX_ADHOC_TRIES)
704 wl3501_mgmt_start(this);
705 else
706 wl3501_mgmt_scan(this, 100);
707 }
708 }
709 }
710 }
711
712 /**
713 * wl3501_block_interrupt - Mask interrupt from SUTRO
714 * @this - card
715 *
716 * Mask interrupt from SUTRO. (i.e. SUTRO cannot interrupt the HOST)
717 * Return: 1 if interrupt is originally enabled
718 */
719 static int wl3501_block_interrupt(struct wl3501_card *this)
720 {
721 u8 old = inb(this->base_addr + WL3501_NIC_GCR);
722 u8 new = old & (~(WL3501_GCR_ECINT | WL3501_GCR_INT2EC |
723 WL3501_GCR_ENECINT));
724
725 wl3501_outb(new, this->base_addr + WL3501_NIC_GCR);
726 return old & WL3501_GCR_ENECINT;
727 }
728
729 /**
730 * wl3501_unblock_interrupt - Enable interrupt from SUTRO
731 * @this - card
732 *
733 * Enable interrupt from SUTRO. (i.e. SUTRO can interrupt the HOST)
734 * Return: 1 if interrupt is originally enabled
735 */
736 static int wl3501_unblock_interrupt(struct wl3501_card *this)
737 {
738 u8 old = inb(this->base_addr + WL3501_NIC_GCR);
739 u8 new = (old & ~(WL3501_GCR_ECINT | WL3501_GCR_INT2EC)) |
740 WL3501_GCR_ENECINT;
741
742 wl3501_outb(new, this->base_addr + WL3501_NIC_GCR);
743 return old & WL3501_GCR_ENECINT;
744 }
745
746 /**
747 * wl3501_receive - Receive data from Receive Queue.
748 *
749 * Receive data from Receive Queue.
750 *
751 * @this: card
752 * @bf: address of host
753 * @size: size of buffer.
754 */
755 static u16 wl3501_receive(struct wl3501_card *this, u8 *bf, u16 size)
756 {
757 u16 next_addr, next_addr1;
758 u8 *data = bf + 12;
759
760 size -= 12;
761 wl3501_get_from_wla(this, this->start_seg + 2,
762 &next_addr, sizeof(next_addr));
763 if (size > WL3501_BLKSZ - sizeof(struct wl3501_rx_hdr)) {
764 wl3501_get_from_wla(this,
765 this->start_seg +
766 sizeof(struct wl3501_rx_hdr), data,
767 WL3501_BLKSZ -
768 sizeof(struct wl3501_rx_hdr));
769 size -= WL3501_BLKSZ - sizeof(struct wl3501_rx_hdr);
770 data += WL3501_BLKSZ - sizeof(struct wl3501_rx_hdr);
771 } else {
772 wl3501_get_from_wla(this,
773 this->start_seg +
774 sizeof(struct wl3501_rx_hdr),
775 data, size);
776 size = 0;
777 }
778 while (size > 0) {
779 if (size > WL3501_BLKSZ - 5) {
780 wl3501_get_from_wla(this, next_addr + 5, data,
781 WL3501_BLKSZ - 5);
782 size -= WL3501_BLKSZ - 5;
783 data += WL3501_BLKSZ - 5;
784 wl3501_get_from_wla(this, next_addr + 2, &next_addr1,
785 sizeof(next_addr1));
786 next_addr = next_addr1;
787 } else {
788 wl3501_get_from_wla(this, next_addr + 5, data, size);
789 size = 0;
790 }
791 }
792 return 0;
793 }
794
795 static void wl3501_esbq_req_free(struct wl3501_card *this)
796 {
797 u8 tmp;
798 u16 addr;
799
800 if (this->esbq_req_head == this->esbq_req_tail)
801 goto out;
802 wl3501_get_from_wla(this, this->esbq_req_tail + 3, &tmp, sizeof(tmp));
803 if (!(tmp & 0x80))
804 goto out;
805 wl3501_get_from_wla(this, this->esbq_req_tail, &addr, sizeof(addr));
806 wl3501_free_tx_buffer(this, addr);
807 this->esbq_req_tail += 4;
808 if (this->esbq_req_tail >= this->esbq_req_end)
809 this->esbq_req_tail = this->esbq_req_start;
810 out:
811 return;
812 }
813
814 static int wl3501_esbq_confirm(struct wl3501_card *this)
815 {
816 u8 tmp;
817
818 wl3501_get_from_wla(this, this->esbq_confirm + 3, &tmp, sizeof(tmp));
819 return tmp & 0x80;
820 }
821
822 static void wl3501_online(struct net_device *dev)
823 {
824 struct wl3501_card *this = netdev_priv(dev);
825
826 printk(KERN_INFO "%s: Wireless LAN online. BSSID: %pM\n",
827 dev->name, this->bssid);
828 netif_wake_queue(dev);
829 }
830
831 static void wl3501_esbq_confirm_done(struct wl3501_card *this)
832 {
833 u8 tmp = 0;
834
835 wl3501_set_to_wla(this, this->esbq_confirm + 3, &tmp, sizeof(tmp));
836 this->esbq_confirm += 4;
837 if (this->esbq_confirm >= this->esbq_confirm_end)
838 this->esbq_confirm = this->esbq_confirm_start;
839 }
840
841 static int wl3501_mgmt_auth(struct wl3501_card *this)
842 {
843 struct wl3501_auth_req sig = {
844 .sig_id = WL3501_SIG_AUTH_REQ,
845 .type = WL3501_SYS_TYPE_OPEN,
846 .timeout = 1000,
847 };
848
849 pr_debug("entry");
850 memcpy(sig.mac_addr, this->bssid, ETH_ALEN);
851 return wl3501_esbq_exec(this, &sig, sizeof(sig));
852 }
853
854 static int wl3501_mgmt_association(struct wl3501_card *this)
855 {
856 struct wl3501_assoc_req sig = {
857 .sig_id = WL3501_SIG_ASSOC_REQ,
858 .timeout = 1000,
859 .listen_interval = 5,
860 .cap_info = this->cap_info,
861 };
862
863 pr_debug("entry");
864 memcpy(sig.mac_addr, this->bssid, ETH_ALEN);
865 return wl3501_esbq_exec(this, &sig, sizeof(sig));
866 }
867
868 static void wl3501_mgmt_join_confirm(struct net_device *dev, u16 addr)
869 {
870 struct wl3501_card *this = netdev_priv(dev);
871 struct wl3501_join_confirm sig;
872
873 pr_debug("entry");
874 wl3501_get_from_wla(this, addr, &sig, sizeof(sig));
875 if (sig.status == WL3501_STATUS_SUCCESS) {
876 if (this->net_type == IW_MODE_INFRA) {
877 if (this->join_sta_bss < this->bss_cnt) {
878 const int i = this->join_sta_bss;
879 memcpy(this->bssid,
880 this->bss_set[i].bssid, ETH_ALEN);
881 this->chan = this->bss_set[i].ds_pset.chan;
882 iw_copy_mgmt_info_element(&this->keep_essid.el,
883 &this->bss_set[i].ssid.el);
884 wl3501_mgmt_auth(this);
885 }
886 } else {
887 const int i = this->join_sta_bss;
888
889 memcpy(&this->bssid, &this->bss_set[i].bssid, ETH_ALEN);
890 this->chan = this->bss_set[i].ds_pset.chan;
891 iw_copy_mgmt_info_element(&this->keep_essid.el,
892 &this->bss_set[i].ssid.el);
893 wl3501_online(dev);
894 }
895 } else {
896 int i;
897 this->join_sta_bss++;
898 for (i = this->join_sta_bss; i < this->bss_cnt; i++)
899 if (!wl3501_mgmt_join(this, i))
900 break;
901 this->join_sta_bss = i;
902 if (this->join_sta_bss == this->bss_cnt) {
903 if (this->net_type == IW_MODE_INFRA)
904 wl3501_mgmt_scan(this, 100);
905 else {
906 this->adhoc_times++;
907 if (this->adhoc_times > WL3501_MAX_ADHOC_TRIES)
908 wl3501_mgmt_start(this);
909 else
910 wl3501_mgmt_scan(this, 100);
911 }
912 }
913 }
914 }
915
916 static inline void wl3501_alarm_interrupt(struct net_device *dev,
917 struct wl3501_card *this)
918 {
919 if (this->net_type == IW_MODE_INFRA) {
920 printk(KERN_INFO "Wireless LAN offline\n");
921 netif_stop_queue(dev);
922 wl3501_mgmt_resync(this);
923 }
924 }
925
926 static inline void wl3501_md_confirm_interrupt(struct net_device *dev,
927 struct wl3501_card *this,
928 u16 addr)
929 {
930 struct wl3501_md_confirm sig;
931
932 pr_debug("entry");
933 wl3501_get_from_wla(this, addr, &sig, sizeof(sig));
934 wl3501_free_tx_buffer(this, sig.data);
935 if (netif_queue_stopped(dev))
936 netif_wake_queue(dev);
937 }
938
939 static inline void wl3501_md_ind_interrupt(struct net_device *dev,
940 struct wl3501_card *this, u16 addr)
941 {
942 struct wl3501_md_ind sig;
943 struct sk_buff *skb;
944 u8 rssi, addr4[ETH_ALEN];
945 u16 pkt_len;
946
947 wl3501_get_from_wla(this, addr, &sig, sizeof(sig));
948 this->start_seg = sig.data;
949 wl3501_get_from_wla(this,
950 sig.data + offsetof(struct wl3501_rx_hdr, rssi),
951 &rssi, sizeof(rssi));
952 this->rssi = rssi <= 63 ? (rssi * 100) / 64 : 255;
953
954 wl3501_get_from_wla(this,
955 sig.data +
956 offsetof(struct wl3501_rx_hdr, addr4),
957 &addr4, sizeof(addr4));
958 if (!(addr4[0] == 0xAA && addr4[1] == 0xAA &&
959 addr4[2] == 0x03 && addr4[4] == 0x00)) {
960 printk(KERN_INFO "Insupported packet type!\n");
961 return;
962 }
963 pkt_len = sig.size + 12 - 24 - 4 - 6;
964
965 skb = dev_alloc_skb(pkt_len + 5);
966
967 if (!skb) {
968 printk(KERN_WARNING "%s: Can't alloc a sk_buff of size %d.\n",
969 dev->name, pkt_len);
970 dev->stats.rx_dropped++;
971 } else {
972 skb->dev = dev;
973 skb_reserve(skb, 2); /* IP headers on 16 bytes boundaries */
974 skb_copy_to_linear_data(skb, (unsigned char *)&sig.daddr, 12);
975 wl3501_receive(this, skb->data, pkt_len);
976 skb_put(skb, pkt_len);
977 skb->protocol = eth_type_trans(skb, dev);
978 dev->stats.rx_packets++;
979 dev->stats.rx_bytes += skb->len;
980 netif_rx(skb);
981 }
982 }
983
984 static inline void wl3501_get_confirm_interrupt(struct wl3501_card *this,
985 u16 addr, void *sig, int size)
986 {
987 pr_debug("entry");
988 wl3501_get_from_wla(this, addr, &this->sig_get_confirm,
989 sizeof(this->sig_get_confirm));
990 wake_up(&this->wait);
991 }
992
993 static inline void wl3501_start_confirm_interrupt(struct net_device *dev,
994 struct wl3501_card *this,
995 u16 addr)
996 {
997 struct wl3501_start_confirm sig;
998
999 pr_debug("entry");
1000 wl3501_get_from_wla(this, addr, &sig, sizeof(sig));
1001 if (sig.status == WL3501_STATUS_SUCCESS)
1002 netif_wake_queue(dev);
1003 }
1004
1005 static inline void wl3501_assoc_confirm_interrupt(struct net_device *dev,
1006 u16 addr)
1007 {
1008 struct wl3501_card *this = netdev_priv(dev);
1009 struct wl3501_assoc_confirm sig;
1010
1011 pr_debug("entry");
1012 wl3501_get_from_wla(this, addr, &sig, sizeof(sig));
1013
1014 if (sig.status == WL3501_STATUS_SUCCESS)
1015 wl3501_online(dev);
1016 }
1017
1018 static inline void wl3501_auth_confirm_interrupt(struct wl3501_card *this,
1019 u16 addr)
1020 {
1021 struct wl3501_auth_confirm sig;
1022
1023 pr_debug("entry");
1024 wl3501_get_from_wla(this, addr, &sig, sizeof(sig));
1025
1026 if (sig.status == WL3501_STATUS_SUCCESS)
1027 wl3501_mgmt_association(this);
1028 else
1029 wl3501_mgmt_resync(this);
1030 }
1031
1032 static inline void wl3501_rx_interrupt(struct net_device *dev)
1033 {
1034 int morepkts;
1035 u16 addr;
1036 u8 sig_id;
1037 struct wl3501_card *this = netdev_priv(dev);
1038
1039 pr_debug("entry");
1040 loop:
1041 morepkts = 0;
1042 if (!wl3501_esbq_confirm(this))
1043 goto free;
1044 wl3501_get_from_wla(this, this->esbq_confirm, &addr, sizeof(addr));
1045 wl3501_get_from_wla(this, addr + 2, &sig_id, sizeof(sig_id));
1046
1047 switch (sig_id) {
1048 case WL3501_SIG_DEAUTH_IND:
1049 case WL3501_SIG_DISASSOC_IND:
1050 case WL3501_SIG_ALARM:
1051 wl3501_alarm_interrupt(dev, this);
1052 break;
1053 case WL3501_SIG_MD_CONFIRM:
1054 wl3501_md_confirm_interrupt(dev, this, addr);
1055 break;
1056 case WL3501_SIG_MD_IND:
1057 wl3501_md_ind_interrupt(dev, this, addr);
1058 break;
1059 case WL3501_SIG_GET_CONFIRM:
1060 wl3501_get_confirm_interrupt(this, addr,
1061 &this->sig_get_confirm,
1062 sizeof(this->sig_get_confirm));
1063 break;
1064 case WL3501_SIG_PWR_MGMT_CONFIRM:
1065 wl3501_get_confirm_interrupt(this, addr,
1066 &this->sig_pwr_mgmt_confirm,
1067 sizeof(this->sig_pwr_mgmt_confirm));
1068 break;
1069 case WL3501_SIG_START_CONFIRM:
1070 wl3501_start_confirm_interrupt(dev, this, addr);
1071 break;
1072 case WL3501_SIG_SCAN_CONFIRM:
1073 wl3501_mgmt_scan_confirm(this, addr);
1074 break;
1075 case WL3501_SIG_JOIN_CONFIRM:
1076 wl3501_mgmt_join_confirm(dev, addr);
1077 break;
1078 case WL3501_SIG_ASSOC_CONFIRM:
1079 wl3501_assoc_confirm_interrupt(dev, addr);
1080 break;
1081 case WL3501_SIG_AUTH_CONFIRM:
1082 wl3501_auth_confirm_interrupt(this, addr);
1083 break;
1084 case WL3501_SIG_RESYNC_CONFIRM:
1085 wl3501_mgmt_resync(this); /* FIXME: should be resync_confirm */
1086 break;
1087 }
1088 wl3501_esbq_confirm_done(this);
1089 morepkts = 1;
1090 /* free request if necessary */
1091 free:
1092 wl3501_esbq_req_free(this);
1093 if (morepkts)
1094 goto loop;
1095 }
1096
1097 static inline void wl3501_ack_interrupt(struct wl3501_card *this)
1098 {
1099 wl3501_outb(WL3501_GCR_ECINT, this->base_addr + WL3501_NIC_GCR);
1100 }
1101
1102 /**
1103 * wl3501_interrupt - Hardware interrupt from card.
1104 * @irq - Interrupt number
1105 * @dev_id - net_device
1106 *
1107 * We must acknowledge the interrupt as soon as possible, and block the
1108 * interrupt from the same card immediately to prevent re-entry.
1109 *
1110 * Before accessing the Control_Status_Block, we must lock SUTRO first.
1111 * On the other hand, to prevent SUTRO from malfunctioning, we must
1112 * unlock the SUTRO as soon as possible.
1113 */
1114 static irqreturn_t wl3501_interrupt(int irq, void *dev_id)
1115 {
1116 struct net_device *dev = dev_id;
1117 struct wl3501_card *this;
1118
1119 this = netdev_priv(dev);
1120 spin_lock(&this->lock);
1121 wl3501_ack_interrupt(this);
1122 wl3501_block_interrupt(this);
1123 wl3501_rx_interrupt(dev);
1124 wl3501_unblock_interrupt(this);
1125 spin_unlock(&this->lock);
1126
1127 return IRQ_HANDLED;
1128 }
1129
1130 static int wl3501_reset_board(struct wl3501_card *this)
1131 {
1132 u8 tmp = 0;
1133 int i, rc = 0;
1134
1135 /* Coreset */
1136 wl3501_outb_p(WL3501_GCR_CORESET, this->base_addr + WL3501_NIC_GCR);
1137 wl3501_outb_p(0, this->base_addr + WL3501_NIC_GCR);
1138 wl3501_outb_p(WL3501_GCR_CORESET, this->base_addr + WL3501_NIC_GCR);
1139
1140 /* Reset SRAM 0x480 to zero */
1141 wl3501_set_to_wla(this, 0x480, &tmp, sizeof(tmp));
1142
1143 /* Start up */
1144 wl3501_outb_p(0, this->base_addr + WL3501_NIC_GCR);
1145
1146 WL3501_NOPLOOP(1024 * 50);
1147
1148 wl3501_unblock_interrupt(this); /* acme: was commented */
1149
1150 /* Polling Self_Test_Status */
1151 for (i = 0; i < 10000; i++) {
1152 wl3501_get_from_wla(this, 0x480, &tmp, sizeof(tmp));
1153
1154 if (tmp == 'W') {
1155 /* firmware complete all test successfully */
1156 tmp = 'A';
1157 wl3501_set_to_wla(this, 0x480, &tmp, sizeof(tmp));
1158 goto out;
1159 }
1160 WL3501_NOPLOOP(10);
1161 }
1162 printk(KERN_WARNING "%s: failed to reset the board!\n", __func__);
1163 rc = -ENODEV;
1164 out:
1165 return rc;
1166 }
1167
1168 static int wl3501_init_firmware(struct wl3501_card *this)
1169 {
1170 u16 ptr, next;
1171 int rc = wl3501_reset_board(this);
1172
1173 if (rc)
1174 goto fail;
1175 this->card_name[0] = '\0';
1176 wl3501_get_from_wla(this, 0x1a00,
1177 this->card_name, sizeof(this->card_name));
1178 this->card_name[sizeof(this->card_name) - 1] = '\0';
1179 this->firmware_date[0] = '\0';
1180 wl3501_get_from_wla(this, 0x1a40,
1181 this->firmware_date, sizeof(this->firmware_date));
1182 this->firmware_date[sizeof(this->firmware_date) - 1] = '\0';
1183 /* Switch to SRAM Page 0 */
1184 wl3501_switch_page(this, WL3501_BSS_SPAGE0);
1185 /* Read parameter from card */
1186 wl3501_get_from_wla(this, 0x482, &this->esbq_req_start, 2);
1187 wl3501_get_from_wla(this, 0x486, &this->esbq_req_end, 2);
1188 wl3501_get_from_wla(this, 0x488, &this->esbq_confirm_start, 2);
1189 wl3501_get_from_wla(this, 0x48c, &this->esbq_confirm_end, 2);
1190 wl3501_get_from_wla(this, 0x48e, &this->tx_buffer_head, 2);
1191 wl3501_get_from_wla(this, 0x492, &this->tx_buffer_size, 2);
1192 this->esbq_req_tail = this->esbq_req_head = this->esbq_req_start;
1193 this->esbq_req_end += this->esbq_req_start;
1194 this->esbq_confirm = this->esbq_confirm_start;
1195 this->esbq_confirm_end += this->esbq_confirm_start;
1196 /* Initial Tx Buffer */
1197 this->tx_buffer_cnt = 1;
1198 ptr = this->tx_buffer_head;
1199 next = ptr + WL3501_BLKSZ;
1200 while ((next - this->tx_buffer_head) < this->tx_buffer_size) {
1201 this->tx_buffer_cnt++;
1202 wl3501_set_to_wla(this, ptr, &next, sizeof(next));
1203 ptr = next;
1204 next = ptr + WL3501_BLKSZ;
1205 }
1206 rc = 0;
1207 next = 0;
1208 wl3501_set_to_wla(this, ptr, &next, sizeof(next));
1209 this->tx_buffer_tail = ptr;
1210 out:
1211 return rc;
1212 fail:
1213 printk(KERN_WARNING "%s: failed!\n", __func__);
1214 goto out;
1215 }
1216
1217 static int wl3501_close(struct net_device *dev)
1218 {
1219 struct wl3501_card *this = netdev_priv(dev);
1220 int rc = -ENODEV;
1221 unsigned long flags;
1222 struct pcmcia_device *link;
1223 link = this->p_dev;
1224
1225 spin_lock_irqsave(&this->lock, flags);
1226 link->open--;
1227
1228 /* Stop wl3501_hard_start_xmit() from now on */
1229 netif_stop_queue(dev);
1230 wl3501_ack_interrupt(this);
1231
1232 /* Mask interrupts from the SUTRO */
1233 wl3501_block_interrupt(this);
1234
1235 rc = 0;
1236 printk(KERN_INFO "%s: WL3501 closed\n", dev->name);
1237 spin_unlock_irqrestore(&this->lock, flags);
1238 return rc;
1239 }
1240
1241 /**
1242 * wl3501_reset - Reset the SUTRO.
1243 * @dev - network device
1244 *
1245 * It is almost the same as wl3501_open(). In fact, we may just wl3501_close()
1246 * and wl3501_open() again, but I wouldn't like to free_irq() when the driver
1247 * is running. It seems to be dangerous.
1248 */
1249 static int wl3501_reset(struct net_device *dev)
1250 {
1251 struct wl3501_card *this = netdev_priv(dev);
1252 int rc = -ENODEV;
1253
1254 wl3501_block_interrupt(this);
1255
1256 if (wl3501_init_firmware(this)) {
1257 printk(KERN_WARNING "%s: Can't initialize Firmware!\n",
1258 dev->name);
1259 /* Free IRQ, and mark IRQ as unused */
1260 free_irq(dev->irq, dev);
1261 goto out;
1262 }
1263
1264 /*
1265 * Queue has to be started only when the Card is Started
1266 */
1267 netif_stop_queue(dev);
1268 this->adhoc_times = 0;
1269 wl3501_ack_interrupt(this);
1270 wl3501_unblock_interrupt(this);
1271 wl3501_mgmt_scan(this, 100);
1272 pr_debug("%s: device reset", dev->name);
1273 rc = 0;
1274 out:
1275 return rc;
1276 }
1277
1278 static void wl3501_tx_timeout(struct net_device *dev)
1279 {
1280 struct wl3501_card *this = netdev_priv(dev);
1281 struct net_device_stats *stats = &dev->stats;
1282 unsigned long flags;
1283 int rc;
1284
1285 stats->tx_errors++;
1286 spin_lock_irqsave(&this->lock, flags);
1287 rc = wl3501_reset(dev);
1288 spin_unlock_irqrestore(&this->lock, flags);
1289 if (rc)
1290 printk(KERN_ERR "%s: Error %d resetting card on Tx timeout!\n",
1291 dev->name, rc);
1292 else {
1293 dev->trans_start = jiffies; /* prevent tx timeout */
1294 netif_wake_queue(dev);
1295 }
1296 }
1297
1298 /*
1299 * Return : 0 - OK
1300 * 1 - Could not transmit (dev_queue_xmit will queue it)
1301 * and try to sent it later
1302 */
1303 static netdev_tx_t wl3501_hard_start_xmit(struct sk_buff *skb,
1304 struct net_device *dev)
1305 {
1306 int enabled, rc;
1307 struct wl3501_card *this = netdev_priv(dev);
1308 unsigned long flags;
1309
1310 spin_lock_irqsave(&this->lock, flags);
1311 enabled = wl3501_block_interrupt(this);
1312 rc = wl3501_send_pkt(this, skb->data, skb->len);
1313 if (enabled)
1314 wl3501_unblock_interrupt(this);
1315 if (rc) {
1316 ++dev->stats.tx_dropped;
1317 netif_stop_queue(dev);
1318 } else {
1319 ++dev->stats.tx_packets;
1320 dev->stats.tx_bytes += skb->len;
1321 kfree_skb(skb);
1322
1323 if (this->tx_buffer_cnt < 2)
1324 netif_stop_queue(dev);
1325 }
1326 spin_unlock_irqrestore(&this->lock, flags);
1327 return NETDEV_TX_OK;
1328 }
1329
1330 static int wl3501_open(struct net_device *dev)
1331 {
1332 int rc = -ENODEV;
1333 struct wl3501_card *this = netdev_priv(dev);
1334 unsigned long flags;
1335 struct pcmcia_device *link;
1336 link = this->p_dev;
1337
1338 spin_lock_irqsave(&this->lock, flags);
1339 if (!pcmcia_dev_present(link))
1340 goto out;
1341 netif_device_attach(dev);
1342 link->open++;
1343
1344 /* Initial WL3501 firmware */
1345 pr_debug("%s: Initialize WL3501 firmware...", dev->name);
1346 if (wl3501_init_firmware(this))
1347 goto fail;
1348 /* Initial device variables */
1349 this->adhoc_times = 0;
1350 /* Acknowledge Interrupt, for cleaning last state */
1351 wl3501_ack_interrupt(this);
1352
1353 /* Enable interrupt from card after all */
1354 wl3501_unblock_interrupt(this);
1355 wl3501_mgmt_scan(this, 100);
1356 rc = 0;
1357 pr_debug("%s: WL3501 opened", dev->name);
1358 printk(KERN_INFO "%s: Card Name: %s\n"
1359 "%s: Firmware Date: %s\n",
1360 dev->name, this->card_name,
1361 dev->name, this->firmware_date);
1362 out:
1363 spin_unlock_irqrestore(&this->lock, flags);
1364 return rc;
1365 fail:
1366 printk(KERN_WARNING "%s: Can't initialize firmware!\n", dev->name);
1367 goto out;
1368 }
1369
1370 static struct iw_statistics *wl3501_get_wireless_stats(struct net_device *dev)
1371 {
1372 struct wl3501_card *this = netdev_priv(dev);
1373 struct iw_statistics *wstats = &this->wstats;
1374 u32 value; /* size checked: it is u32 */
1375
1376 memset(wstats, 0, sizeof(*wstats));
1377 wstats->status = netif_running(dev);
1378 if (!wl3501_get_mib_value(this, WL3501_MIB_ATTR_WEP_ICV_ERROR_COUNT,
1379 &value, sizeof(value)))
1380 wstats->discard.code += value;
1381 if (!wl3501_get_mib_value(this, WL3501_MIB_ATTR_WEP_UNDECRYPTABLE_COUNT,
1382 &value, sizeof(value)))
1383 wstats->discard.code += value;
1384 if (!wl3501_get_mib_value(this, WL3501_MIB_ATTR_WEP_EXCLUDED_COUNT,
1385 &value, sizeof(value)))
1386 wstats->discard.code += value;
1387 if (!wl3501_get_mib_value(this, WL3501_MIB_ATTR_RETRY_COUNT,
1388 &value, sizeof(value)))
1389 wstats->discard.retries = value;
1390 if (!wl3501_get_mib_value(this, WL3501_MIB_ATTR_FAILED_COUNT,
1391 &value, sizeof(value)))
1392 wstats->discard.misc += value;
1393 if (!wl3501_get_mib_value(this, WL3501_MIB_ATTR_RTS_FAILURE_COUNT,
1394 &value, sizeof(value)))
1395 wstats->discard.misc += value;
1396 if (!wl3501_get_mib_value(this, WL3501_MIB_ATTR_ACK_FAILURE_COUNT,
1397 &value, sizeof(value)))
1398 wstats->discard.misc += value;
1399 if (!wl3501_get_mib_value(this, WL3501_MIB_ATTR_FRAME_DUPLICATE_COUNT,
1400 &value, sizeof(value)))
1401 wstats->discard.misc += value;
1402 return wstats;
1403 }
1404
1405 /**
1406 * wl3501_detach - deletes a driver "instance"
1407 * @link - FILL_IN
1408 *
1409 * This deletes a driver "instance". The device is de-registered with Card
1410 * Services. If it has been released, all local data structures are freed.
1411 * Otherwise, the structures will be freed when the device is released.
1412 */
1413 static void wl3501_detach(struct pcmcia_device *link)
1414 {
1415 struct net_device *dev = link->priv;
1416
1417 /* If the device is currently configured and active, we won't actually
1418 * delete it yet. Instead, it is marked so that when the release()
1419 * function is called, that will trigger a proper detach(). */
1420
1421 while (link->open > 0)
1422 wl3501_close(dev);
1423
1424 netif_device_detach(dev);
1425 wl3501_release(link);
1426
1427 unregister_netdev(dev);
1428
1429 if (link->priv)
1430 free_netdev(link->priv);
1431 }
1432
1433 static int wl3501_get_name(struct net_device *dev, struct iw_request_info *info,
1434 union iwreq_data *wrqu, char *extra)
1435 {
1436 strlcpy(wrqu->name, "IEEE 802.11-DS", sizeof(wrqu->name));
1437 return 0;
1438 }
1439
1440 static int wl3501_set_freq(struct net_device *dev, struct iw_request_info *info,
1441 union iwreq_data *wrqu, char *extra)
1442 {
1443 struct wl3501_card *this = netdev_priv(dev);
1444 int channel = wrqu->freq.m;
1445 int rc = -EINVAL;
1446
1447 if (iw_valid_channel(this->reg_domain, channel)) {
1448 this->chan = channel;
1449 rc = wl3501_reset(dev);
1450 }
1451 return rc;
1452 }
1453
1454 static int wl3501_get_freq(struct net_device *dev, struct iw_request_info *info,
1455 union iwreq_data *wrqu, char *extra)
1456 {
1457 struct wl3501_card *this = netdev_priv(dev);
1458
1459 wrqu->freq.m = ieee80211_dsss_chan_to_freq(this->chan) * 100000;
1460 wrqu->freq.e = 1;
1461 return 0;
1462 }
1463
1464 static int wl3501_set_mode(struct net_device *dev, struct iw_request_info *info,
1465 union iwreq_data *wrqu, char *extra)
1466 {
1467 int rc = -EINVAL;
1468
1469 if (wrqu->mode == IW_MODE_INFRA ||
1470 wrqu->mode == IW_MODE_ADHOC ||
1471 wrqu->mode == IW_MODE_AUTO) {
1472 struct wl3501_card *this = netdev_priv(dev);
1473
1474 this->net_type = wrqu->mode;
1475 rc = wl3501_reset(dev);
1476 }
1477 return rc;
1478 }
1479
1480 static int wl3501_get_mode(struct net_device *dev, struct iw_request_info *info,
1481 union iwreq_data *wrqu, char *extra)
1482 {
1483 struct wl3501_card *this = netdev_priv(dev);
1484
1485 wrqu->mode = this->net_type;
1486 return 0;
1487 }
1488
1489 static int wl3501_get_sens(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->sens.value = this->rssi;
1495 wrqu->sens.disabled = !wrqu->sens.value;
1496 wrqu->sens.fixed = 1;
1497 return 0;
1498 }
1499
1500 static int wl3501_get_range(struct net_device *dev,
1501 struct iw_request_info *info,
1502 union iwreq_data *wrqu, char *extra)
1503 {
1504 struct iw_range *range = (struct iw_range *)extra;
1505
1506 /* Set the length (very important for backward compatibility) */
1507 wrqu->data.length = sizeof(*range);
1508
1509 /* Set all the info we don't care or don't know about to zero */
1510 memset(range, 0, sizeof(*range));
1511
1512 /* Set the Wireless Extension versions */
1513 range->we_version_compiled = WIRELESS_EXT;
1514 range->we_version_source = 1;
1515 range->throughput = 2 * 1000 * 1000; /* ~2 Mb/s */
1516 /* FIXME: study the code to fill in more fields... */
1517 return 0;
1518 }
1519
1520 static int wl3501_set_wap(struct net_device *dev, struct iw_request_info *info,
1521 union iwreq_data *wrqu, char *extra)
1522 {
1523 struct wl3501_card *this = netdev_priv(dev);
1524 static const u8 bcast[ETH_ALEN] = { 255, 255, 255, 255, 255, 255 };
1525 int rc = -EINVAL;
1526
1527 /* FIXME: we support other ARPHRDs...*/
1528 if (wrqu->ap_addr.sa_family != ARPHRD_ETHER)
1529 goto out;
1530 if (!memcmp(bcast, wrqu->ap_addr.sa_data, ETH_ALEN)) {
1531 /* FIXME: rescan? */
1532 } else
1533 memcpy(this->bssid, wrqu->ap_addr.sa_data, ETH_ALEN);
1534 /* FIXME: rescan? deassoc & scan? */
1535 rc = 0;
1536 out:
1537 return rc;
1538 }
1539
1540 static int wl3501_get_wap(struct net_device *dev, struct iw_request_info *info,
1541 union iwreq_data *wrqu, char *extra)
1542 {
1543 struct wl3501_card *this = netdev_priv(dev);
1544
1545 wrqu->ap_addr.sa_family = ARPHRD_ETHER;
1546 memcpy(wrqu->ap_addr.sa_data, this->bssid, ETH_ALEN);
1547 return 0;
1548 }
1549
1550 static int wl3501_set_scan(struct net_device *dev, struct iw_request_info *info,
1551 union iwreq_data *wrqu, char *extra)
1552 {
1553 /*
1554 * FIXME: trigger scanning with a reset, yes, I'm lazy
1555 */
1556 return wl3501_reset(dev);
1557 }
1558
1559 static int wl3501_get_scan(struct net_device *dev, struct iw_request_info *info,
1560 union iwreq_data *wrqu, char *extra)
1561 {
1562 struct wl3501_card *this = netdev_priv(dev);
1563 int i;
1564 char *current_ev = extra;
1565 struct iw_event iwe;
1566
1567 for (i = 0; i < this->bss_cnt; ++i) {
1568 iwe.cmd = SIOCGIWAP;
1569 iwe.u.ap_addr.sa_family = ARPHRD_ETHER;
1570 memcpy(iwe.u.ap_addr.sa_data, this->bss_set[i].bssid, ETH_ALEN);
1571 current_ev = iwe_stream_add_event(info, current_ev,
1572 extra + IW_SCAN_MAX_DATA,
1573 &iwe, IW_EV_ADDR_LEN);
1574 iwe.cmd = SIOCGIWESSID;
1575 iwe.u.data.flags = 1;
1576 iwe.u.data.length = this->bss_set[i].ssid.el.len;
1577 current_ev = iwe_stream_add_point(info, current_ev,
1578 extra + IW_SCAN_MAX_DATA,
1579 &iwe,
1580 this->bss_set[i].ssid.essid);
1581 iwe.cmd = SIOCGIWMODE;
1582 iwe.u.mode = this->bss_set[i].bss_type;
1583 current_ev = iwe_stream_add_event(info, current_ev,
1584 extra + IW_SCAN_MAX_DATA,
1585 &iwe, IW_EV_UINT_LEN);
1586 iwe.cmd = SIOCGIWFREQ;
1587 iwe.u.freq.m = this->bss_set[i].ds_pset.chan;
1588 iwe.u.freq.e = 0;
1589 current_ev = iwe_stream_add_event(info, current_ev,
1590 extra + IW_SCAN_MAX_DATA,
1591 &iwe, IW_EV_FREQ_LEN);
1592 iwe.cmd = SIOCGIWENCODE;
1593 if (this->bss_set[i].cap_info & WL3501_MGMT_CAPABILITY_PRIVACY)
1594 iwe.u.data.flags = IW_ENCODE_ENABLED | IW_ENCODE_NOKEY;
1595 else
1596 iwe.u.data.flags = IW_ENCODE_DISABLED;
1597 iwe.u.data.length = 0;
1598 current_ev = iwe_stream_add_point(info, current_ev,
1599 extra + IW_SCAN_MAX_DATA,
1600 &iwe, NULL);
1601 }
1602 /* Length of data */
1603 wrqu->data.length = (current_ev - extra);
1604 wrqu->data.flags = 0; /* FIXME: set properly these flags */
1605 return 0;
1606 }
1607
1608 static int wl3501_set_essid(struct net_device *dev,
1609 struct iw_request_info *info,
1610 union iwreq_data *wrqu, char *extra)
1611 {
1612 struct wl3501_card *this = netdev_priv(dev);
1613
1614 if (wrqu->data.flags) {
1615 iw_set_mgmt_info_element(IW_MGMT_INFO_ELEMENT_SSID,
1616 &this->essid.el,
1617 extra, wrqu->data.length);
1618 } else { /* We accept any ESSID */
1619 iw_set_mgmt_info_element(IW_MGMT_INFO_ELEMENT_SSID,
1620 &this->essid.el, "ANY", 3);
1621 }
1622 return wl3501_reset(dev);
1623 }
1624
1625 static int wl3501_get_essid(struct net_device *dev,
1626 struct iw_request_info *info,
1627 union iwreq_data *wrqu, char *extra)
1628 {
1629 struct wl3501_card *this = netdev_priv(dev);
1630 unsigned long flags;
1631
1632 spin_lock_irqsave(&this->lock, flags);
1633 wrqu->essid.flags = 1;
1634 wrqu->essid.length = this->essid.el.len;
1635 memcpy(extra, this->essid.essid, this->essid.el.len);
1636 spin_unlock_irqrestore(&this->lock, flags);
1637 return 0;
1638 }
1639
1640 static int wl3501_set_nick(struct net_device *dev, struct iw_request_info *info,
1641 union iwreq_data *wrqu, char *extra)
1642 {
1643 struct wl3501_card *this = netdev_priv(dev);
1644
1645 if (wrqu->data.length > sizeof(this->nick))
1646 return -E2BIG;
1647 strlcpy(this->nick, extra, wrqu->data.length);
1648 return 0;
1649 }
1650
1651 static int wl3501_get_nick(struct net_device *dev, struct iw_request_info *info,
1652 union iwreq_data *wrqu, char *extra)
1653 {
1654 struct wl3501_card *this = netdev_priv(dev);
1655
1656 strlcpy(extra, this->nick, 32);
1657 wrqu->data.length = strlen(extra);
1658 return 0;
1659 }
1660
1661 static int wl3501_get_rate(struct net_device *dev, struct iw_request_info *info,
1662 union iwreq_data *wrqu, char *extra)
1663 {
1664 /*
1665 * FIXME: have to see from where to get this info, perhaps this card
1666 * works at 1 Mbit/s too... for now leave at 2 Mbit/s that is the most
1667 * common with the Planet Access Points. -acme
1668 */
1669 wrqu->bitrate.value = 2000000;
1670 wrqu->bitrate.fixed = 1;
1671 return 0;
1672 }
1673
1674 static int wl3501_get_rts_threshold(struct net_device *dev,
1675 struct iw_request_info *info,
1676 union iwreq_data *wrqu, char *extra)
1677 {
1678 u16 threshold; /* size checked: it is u16 */
1679 struct wl3501_card *this = netdev_priv(dev);
1680 int rc = wl3501_get_mib_value(this, WL3501_MIB_ATTR_RTS_THRESHOLD,
1681 &threshold, sizeof(threshold));
1682 if (!rc) {
1683 wrqu->rts.value = threshold;
1684 wrqu->rts.disabled = threshold >= 2347;
1685 wrqu->rts.fixed = 1;
1686 }
1687 return rc;
1688 }
1689
1690 static int wl3501_get_frag_threshold(struct net_device *dev,
1691 struct iw_request_info *info,
1692 union iwreq_data *wrqu, char *extra)
1693 {
1694 u16 threshold; /* size checked: it is u16 */
1695 struct wl3501_card *this = netdev_priv(dev);
1696 int rc = wl3501_get_mib_value(this, WL3501_MIB_ATTR_FRAG_THRESHOLD,
1697 &threshold, sizeof(threshold));
1698 if (!rc) {
1699 wrqu->frag.value = threshold;
1700 wrqu->frag.disabled = threshold >= 2346;
1701 wrqu->frag.fixed = 1;
1702 }
1703 return rc;
1704 }
1705
1706 static int wl3501_get_txpow(struct net_device *dev,
1707 struct iw_request_info *info,
1708 union iwreq_data *wrqu, char *extra)
1709 {
1710 u16 txpow;
1711 struct wl3501_card *this = netdev_priv(dev);
1712 int rc = wl3501_get_mib_value(this,
1713 WL3501_MIB_ATTR_CURRENT_TX_PWR_LEVEL,
1714 &txpow, sizeof(txpow));
1715 if (!rc) {
1716 wrqu->txpower.value = txpow;
1717 wrqu->txpower.disabled = 0;
1718 /*
1719 * From the MIB values I think this can be configurable,
1720 * as it lists several tx power levels -acme
1721 */
1722 wrqu->txpower.fixed = 0;
1723 wrqu->txpower.flags = IW_TXPOW_MWATT;
1724 }
1725 return rc;
1726 }
1727
1728 static int wl3501_get_retry(struct net_device *dev,
1729 struct iw_request_info *info,
1730 union iwreq_data *wrqu, char *extra)
1731 {
1732 u8 retry; /* size checked: it is u8 */
1733 struct wl3501_card *this = netdev_priv(dev);
1734 int rc = wl3501_get_mib_value(this,
1735 WL3501_MIB_ATTR_LONG_RETRY_LIMIT,
1736 &retry, sizeof(retry));
1737 if (rc)
1738 goto out;
1739 if (wrqu->retry.flags & IW_RETRY_LONG) {
1740 wrqu->retry.flags = IW_RETRY_LIMIT | IW_RETRY_LONG;
1741 goto set_value;
1742 }
1743 rc = wl3501_get_mib_value(this, WL3501_MIB_ATTR_SHORT_RETRY_LIMIT,
1744 &retry, sizeof(retry));
1745 if (rc)
1746 goto out;
1747 wrqu->retry.flags = IW_RETRY_LIMIT | IW_RETRY_SHORT;
1748 set_value:
1749 wrqu->retry.value = retry;
1750 wrqu->retry.disabled = 0;
1751 out:
1752 return rc;
1753 }
1754
1755 static int wl3501_get_encode(struct net_device *dev,
1756 struct iw_request_info *info,
1757 union iwreq_data *wrqu, char *extra)
1758 {
1759 u8 implemented, restricted, keys[100], len_keys, tocopy;
1760 struct wl3501_card *this = netdev_priv(dev);
1761 int rc = wl3501_get_mib_value(this,
1762 WL3501_MIB_ATTR_PRIV_OPT_IMPLEMENTED,
1763 &implemented, sizeof(implemented));
1764 if (rc)
1765 goto out;
1766 if (!implemented) {
1767 wrqu->encoding.flags = IW_ENCODE_DISABLED;
1768 goto out;
1769 }
1770 rc = wl3501_get_mib_value(this, WL3501_MIB_ATTR_EXCLUDE_UNENCRYPTED,
1771 &restricted, sizeof(restricted));
1772 if (rc)
1773 goto out;
1774 wrqu->encoding.flags = restricted ? IW_ENCODE_RESTRICTED :
1775 IW_ENCODE_OPEN;
1776 rc = wl3501_get_mib_value(this, WL3501_MIB_ATTR_WEP_KEY_MAPPINGS_LEN,
1777 &len_keys, sizeof(len_keys));
1778 if (rc)
1779 goto out;
1780 rc = wl3501_get_mib_value(this, WL3501_MIB_ATTR_WEP_KEY_MAPPINGS,
1781 keys, len_keys);
1782 if (rc)
1783 goto out;
1784 tocopy = min_t(u16, len_keys, wrqu->encoding.length);
1785 tocopy = min_t(u8, tocopy, 100);
1786 wrqu->encoding.length = tocopy;
1787 memcpy(extra, keys, tocopy);
1788 out:
1789 return rc;
1790 }
1791
1792 static int wl3501_get_power(struct net_device *dev,
1793 struct iw_request_info *info,
1794 union iwreq_data *wrqu, char *extra)
1795 {
1796 u8 pwr_state;
1797 struct wl3501_card *this = netdev_priv(dev);
1798 int rc = wl3501_get_mib_value(this,
1799 WL3501_MIB_ATTR_CURRENT_PWR_STATE,
1800 &pwr_state, sizeof(pwr_state));
1801 if (rc)
1802 goto out;
1803 wrqu->power.disabled = !pwr_state;
1804 wrqu->power.flags = IW_POWER_ON;
1805 out:
1806 return rc;
1807 }
1808
1809 static const iw_handler wl3501_handler[] = {
1810 IW_HANDLER(SIOCGIWNAME, wl3501_get_name),
1811 IW_HANDLER(SIOCSIWFREQ, wl3501_set_freq),
1812 IW_HANDLER(SIOCGIWFREQ, wl3501_get_freq),
1813 IW_HANDLER(SIOCSIWMODE, wl3501_set_mode),
1814 IW_HANDLER(SIOCGIWMODE, wl3501_get_mode),
1815 IW_HANDLER(SIOCGIWSENS, wl3501_get_sens),
1816 IW_HANDLER(SIOCGIWRANGE, wl3501_get_range),
1817 IW_HANDLER(SIOCSIWSPY, iw_handler_set_spy),
1818 IW_HANDLER(SIOCGIWSPY, iw_handler_get_spy),
1819 IW_HANDLER(SIOCSIWTHRSPY, iw_handler_set_thrspy),
1820 IW_HANDLER(SIOCGIWTHRSPY, iw_handler_get_thrspy),
1821 IW_HANDLER(SIOCSIWAP, wl3501_set_wap),
1822 IW_HANDLER(SIOCGIWAP, wl3501_get_wap),
1823 IW_HANDLER(SIOCSIWSCAN, wl3501_set_scan),
1824 IW_HANDLER(SIOCGIWSCAN, wl3501_get_scan),
1825 IW_HANDLER(SIOCSIWESSID, wl3501_set_essid),
1826 IW_HANDLER(SIOCGIWESSID, wl3501_get_essid),
1827 IW_HANDLER(SIOCSIWNICKN, wl3501_set_nick),
1828 IW_HANDLER(SIOCGIWNICKN, wl3501_get_nick),
1829 IW_HANDLER(SIOCGIWRATE, wl3501_get_rate),
1830 IW_HANDLER(SIOCGIWRTS, wl3501_get_rts_threshold),
1831 IW_HANDLER(SIOCGIWFRAG, wl3501_get_frag_threshold),
1832 IW_HANDLER(SIOCGIWTXPOW, wl3501_get_txpow),
1833 IW_HANDLER(SIOCGIWRETRY, wl3501_get_retry),
1834 IW_HANDLER(SIOCGIWENCODE, wl3501_get_encode),
1835 IW_HANDLER(SIOCGIWPOWER, wl3501_get_power),
1836 };
1837
1838 static const struct iw_handler_def wl3501_handler_def = {
1839 .num_standard = ARRAY_SIZE(wl3501_handler),
1840 .standard = (iw_handler *)wl3501_handler,
1841 .get_wireless_stats = wl3501_get_wireless_stats,
1842 };
1843
1844 static const struct net_device_ops wl3501_netdev_ops = {
1845 .ndo_open = wl3501_open,
1846 .ndo_stop = wl3501_close,
1847 .ndo_start_xmit = wl3501_hard_start_xmit,
1848 .ndo_tx_timeout = wl3501_tx_timeout,
1849 .ndo_change_mtu = eth_change_mtu,
1850 .ndo_set_mac_address = eth_mac_addr,
1851 .ndo_validate_addr = eth_validate_addr,
1852 };
1853
1854 static int wl3501_probe(struct pcmcia_device *p_dev)
1855 {
1856 struct net_device *dev;
1857 struct wl3501_card *this;
1858
1859 /* The io structure describes IO port mapping */
1860 p_dev->resource[0]->end = 16;
1861 p_dev->resource[0]->flags = IO_DATA_PATH_WIDTH_8;
1862
1863 /* General socket configuration */
1864 p_dev->config_flags = CONF_ENABLE_IRQ;
1865 p_dev->config_index = 1;
1866
1867 dev = alloc_etherdev(sizeof(struct wl3501_card));
1868 if (!dev)
1869 goto out_link;
1870
1871
1872 dev->netdev_ops = &wl3501_netdev_ops;
1873 dev->watchdog_timeo = 5 * HZ;
1874
1875 this = netdev_priv(dev);
1876 this->wireless_data.spy_data = &this->spy_data;
1877 this->p_dev = p_dev;
1878 dev->wireless_data = &this->wireless_data;
1879 dev->wireless_handlers = &wl3501_handler_def;
1880 netif_stop_queue(dev);
1881 p_dev->priv = dev;
1882
1883 return wl3501_config(p_dev);
1884 out_link:
1885 return -ENOMEM;
1886 }
1887
1888 static int wl3501_config(struct pcmcia_device *link)
1889 {
1890 struct net_device *dev = link->priv;
1891 int i = 0, j, ret;
1892 struct wl3501_card *this;
1893
1894 /* Try allocating IO ports. This tries a few fixed addresses. If you
1895 * want, you can also read the card's config table to pick addresses --
1896 * see the serial driver for an example. */
1897 link->io_lines = 5;
1898
1899 for (j = 0x280; j < 0x400; j += 0x20) {
1900 /* The '^0x300' is so that we probe 0x300-0x3ff first, then
1901 * 0x200-0x2ff, and so on, because this seems safer */
1902 link->resource[0]->start = j;
1903 link->resource[1]->start = link->resource[0]->start + 0x10;
1904 i = pcmcia_request_io(link);
1905 if (i == 0)
1906 break;
1907 }
1908 if (i != 0)
1909 goto failed;
1910
1911 /* Now allocate an interrupt line. Note that this does not actually
1912 * assign a handler to the interrupt. */
1913
1914 ret = pcmcia_request_irq(link, wl3501_interrupt);
1915 if (ret)
1916 goto failed;
1917
1918 ret = pcmcia_enable_device(link);
1919 if (ret)
1920 goto failed;
1921
1922 dev->irq = link->irq;
1923 dev->base_addr = link->resource[0]->start;
1924 SET_NETDEV_DEV(dev, &link->dev);
1925 if (register_netdev(dev)) {
1926 printk(KERN_NOTICE "wl3501_cs: register_netdev() failed\n");
1927 goto failed;
1928 }
1929
1930 this = netdev_priv(dev);
1931
1932 this->base_addr = dev->base_addr;
1933
1934 if (!wl3501_get_flash_mac_addr(this)) {
1935 printk(KERN_WARNING "%s: Can't read MAC addr in flash ROM?\n",
1936 dev->name);
1937 unregister_netdev(dev);
1938 goto failed;
1939 }
1940
1941 for (i = 0; i < 6; i++)
1942 dev->dev_addr[i] = ((char *)&this->mac_addr)[i];
1943
1944 /* print probe information */
1945 printk(KERN_INFO "%s: wl3501 @ 0x%3.3x, IRQ %d, "
1946 "MAC addr in flash ROM:%pM\n",
1947 dev->name, this->base_addr, (int)dev->irq,
1948 dev->dev_addr);
1949 /*
1950 * Initialize card parameters - added by jss
1951 */
1952 this->net_type = IW_MODE_INFRA;
1953 this->bss_cnt = 0;
1954 this->join_sta_bss = 0;
1955 this->adhoc_times = 0;
1956 iw_set_mgmt_info_element(IW_MGMT_INFO_ELEMENT_SSID, &this->essid.el,
1957 "ANY", 3);
1958 this->card_name[0] = '\0';
1959 this->firmware_date[0] = '\0';
1960 this->rssi = 255;
1961 this->chan = iw_default_channel(this->reg_domain);
1962 strlcpy(this->nick, "Planet WL3501", sizeof(this->nick));
1963 spin_lock_init(&this->lock);
1964 init_waitqueue_head(&this->wait);
1965 netif_start_queue(dev);
1966 return 0;
1967
1968 failed:
1969 wl3501_release(link);
1970 return -ENODEV;
1971 }
1972
1973 static void wl3501_release(struct pcmcia_device *link)
1974 {
1975 pcmcia_disable_device(link);
1976 }
1977
1978 static int wl3501_suspend(struct pcmcia_device *link)
1979 {
1980 struct net_device *dev = link->priv;
1981
1982 wl3501_pwr_mgmt(netdev_priv(dev), WL3501_SUSPEND);
1983 if (link->open)
1984 netif_device_detach(dev);
1985
1986 return 0;
1987 }
1988
1989 static int wl3501_resume(struct pcmcia_device *link)
1990 {
1991 struct net_device *dev = link->priv;
1992
1993 wl3501_pwr_mgmt(netdev_priv(dev), WL3501_RESUME);
1994 if (link->open) {
1995 wl3501_reset(dev);
1996 netif_device_attach(dev);
1997 }
1998
1999 return 0;
2000 }
2001
2002
2003 static const struct pcmcia_device_id wl3501_ids[] = {
2004 PCMCIA_DEVICE_MANF_CARD(0xd601, 0x0001),
2005 PCMCIA_DEVICE_NULL
2006 };
2007 MODULE_DEVICE_TABLE(pcmcia, wl3501_ids);
2008
2009 static struct pcmcia_driver wl3501_driver = {
2010 .owner = THIS_MODULE,
2011 .name = "wl3501_cs",
2012 .probe = wl3501_probe,
2013 .remove = wl3501_detach,
2014 .id_table = wl3501_ids,
2015 .suspend = wl3501_suspend,
2016 .resume = wl3501_resume,
2017 };
2018
2019 static int __init wl3501_init_module(void)
2020 {
2021 return pcmcia_register_driver(&wl3501_driver);
2022 }
2023
2024 static void __exit wl3501_exit_module(void)
2025 {
2026 pcmcia_unregister_driver(&wl3501_driver);
2027 }
2028
2029 module_init(wl3501_init_module);
2030 module_exit(wl3501_exit_module);
2031
2032 MODULE_AUTHOR("Fox Chen <mhchen@golf.ccl.itri.org.tw>, "
2033 "Arnaldo Carvalho de Melo <acme@conectiva.com.br>,"
2034 "Gustavo Niemeyer <niemeyer@conectiva.com>");
2035 MODULE_DESCRIPTION("Planet wl3501 wireless driver");
2036 MODULE_LICENSE("GPL");