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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 <linux/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
77static int wl3501_config(struct pcmcia_device *link);
78static void wl3501_release(struct pcmcia_device *link);
79
80static 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 */
141static 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 */
160static 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
172static 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
181static 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
187static 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 */
198static 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 */
245static 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 */
267static 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 */
293static 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;
322out:
323 return ret;
324}
325
326/*
327 * Free an allocated Tx Buffer. ptr must be correct position.
328 */
329static 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
347static 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
355static 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
366static 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
381static 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
405static 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
423static 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);
451out:
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 */
465static 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 }
546out:
547 return rc;
548}
549
550static 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
559static 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
565static 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
571static 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
586static 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
604static 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
657static 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 */
727static 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 */
744static 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 */
763static 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
803static 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;
818out:
819 return;
820}
821
822static 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
830static 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
839static 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
849static 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
862static 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
876static 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
924static 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
934static 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
947static 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 "Unsupported 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
992static 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
1001static 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
1013static 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
1026static 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
1040static 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");
1048loop:
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 */
1099free:
1100 wl3501_esbq_req_free(this);
1101 if (morepkts)
1102 goto loop;
1103}
1104
1105static 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 */
1122static 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
1138static 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;
1172out:
1173 return rc;
1174}
1175
1176static 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;
1218out:
1219 return rc;
1220fail:
1221 printk(KERN_WARNING "%s: failed!\n", __func__);
1222 goto out;
1223}
1224
1225static 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 */
1257static int wl3501_reset(struct net_device *dev)
1258{
1259 struct wl3501_card *this = netdev_priv(dev);
1260 int rc = -ENODEV;
1261 unsigned long flags;
1262
1263 spin_lock_irqsave(&this->lock, flags);
1264 wl3501_block_interrupt(this);
1265
1266 if (wl3501_init_firmware(this)) {
1267 printk(KERN_WARNING "%s: Can't initialize Firmware!\n",
1268 dev->name);
1269 /* Free IRQ, and mark IRQ as unused */
1270 free_irq(dev->irq, dev);
1271 goto out;
1272 }
1273
1274 /*
1275 * Queue has to be started only when the Card is Started
1276 */
1277 netif_stop_queue(dev);
1278 this->adhoc_times = 0;
1279 wl3501_ack_interrupt(this);
1280 wl3501_unblock_interrupt(this);
1281 wl3501_mgmt_scan(this, 100);
1282 pr_debug("%s: device reset", dev->name);
1283 rc = 0;
1284out:
1285 spin_unlock_irqrestore(&this->lock, flags);
1286 return rc;
1287}
1288
1289static void wl3501_tx_timeout(struct net_device *dev)
1290{
1291 struct net_device_stats *stats = &dev->stats;
1292 int rc;
1293
1294 stats->tx_errors++;
1295 rc = wl3501_reset(dev);
1296 if (rc)
1297 printk(KERN_ERR "%s: Error %d resetting card on Tx timeout!\n",
1298 dev->name, rc);
1299 else {
1300 netif_trans_update(dev); /* prevent tx timeout */
1301 netif_wake_queue(dev);
1302 }
1303}
1304
1305/*
1306 * Return : 0 - OK
1307 * 1 - Could not transmit (dev_queue_xmit will queue it)
1308 * and try to sent it later
1309 */
1310static netdev_tx_t wl3501_hard_start_xmit(struct sk_buff *skb,
1311 struct net_device *dev)
1312{
1313 int enabled, rc;
1314 struct wl3501_card *this = netdev_priv(dev);
1315 unsigned long flags;
1316
1317 spin_lock_irqsave(&this->lock, flags);
1318 enabled = wl3501_block_interrupt(this);
1319 rc = wl3501_send_pkt(this, skb->data, skb->len);
1320 if (enabled)
1321 wl3501_unblock_interrupt(this);
1322 if (rc) {
1323 ++dev->stats.tx_dropped;
1324 netif_stop_queue(dev);
1325 } else {
1326 ++dev->stats.tx_packets;
1327 dev->stats.tx_bytes += skb->len;
1328 kfree_skb(skb);
1329
1330 if (this->tx_buffer_cnt < 2)
1331 netif_stop_queue(dev);
1332 }
1333 spin_unlock_irqrestore(&this->lock, flags);
1334 return NETDEV_TX_OK;
1335}
1336
1337static int wl3501_open(struct net_device *dev)
1338{
1339 int rc = -ENODEV;
1340 struct wl3501_card *this = netdev_priv(dev);
1341 unsigned long flags;
1342 struct pcmcia_device *link;
1343 link = this->p_dev;
1344
1345 spin_lock_irqsave(&this->lock, flags);
1346 if (!pcmcia_dev_present(link))
1347 goto out;
1348 netif_device_attach(dev);
1349 link->open++;
1350
1351 /* Initial WL3501 firmware */
1352 pr_debug("%s: Initialize WL3501 firmware...", dev->name);
1353 if (wl3501_init_firmware(this))
1354 goto fail;
1355 /* Initial device variables */
1356 this->adhoc_times = 0;
1357 /* Acknowledge Interrupt, for cleaning last state */
1358 wl3501_ack_interrupt(this);
1359
1360 /* Enable interrupt from card after all */
1361 wl3501_unblock_interrupt(this);
1362 wl3501_mgmt_scan(this, 100);
1363 rc = 0;
1364 pr_debug("%s: WL3501 opened", dev->name);
1365 printk(KERN_INFO "%s: Card Name: %s\n"
1366 "%s: Firmware Date: %s\n",
1367 dev->name, this->card_name,
1368 dev->name, this->firmware_date);
1369out:
1370 spin_unlock_irqrestore(&this->lock, flags);
1371 return rc;
1372fail:
1373 printk(KERN_WARNING "%s: Can't initialize firmware!\n", dev->name);
1374 goto out;
1375}
1376
1377static struct iw_statistics *wl3501_get_wireless_stats(struct net_device *dev)
1378{
1379 struct wl3501_card *this = netdev_priv(dev);
1380 struct iw_statistics *wstats = &this->wstats;
1381 u32 value; /* size checked: it is u32 */
1382
1383 memset(wstats, 0, sizeof(*wstats));
1384 wstats->status = netif_running(dev);
1385 if (!wl3501_get_mib_value(this, WL3501_MIB_ATTR_WEP_ICV_ERROR_COUNT,
1386 &value, sizeof(value)))
1387 wstats->discard.code += value;
1388 if (!wl3501_get_mib_value(this, WL3501_MIB_ATTR_WEP_UNDECRYPTABLE_COUNT,
1389 &value, sizeof(value)))
1390 wstats->discard.code += value;
1391 if (!wl3501_get_mib_value(this, WL3501_MIB_ATTR_WEP_EXCLUDED_COUNT,
1392 &value, sizeof(value)))
1393 wstats->discard.code += value;
1394 if (!wl3501_get_mib_value(this, WL3501_MIB_ATTR_RETRY_COUNT,
1395 &value, sizeof(value)))
1396 wstats->discard.retries = value;
1397 if (!wl3501_get_mib_value(this, WL3501_MIB_ATTR_FAILED_COUNT,
1398 &value, sizeof(value)))
1399 wstats->discard.misc += value;
1400 if (!wl3501_get_mib_value(this, WL3501_MIB_ATTR_RTS_FAILURE_COUNT,
1401 &value, sizeof(value)))
1402 wstats->discard.misc += value;
1403 if (!wl3501_get_mib_value(this, WL3501_MIB_ATTR_ACK_FAILURE_COUNT,
1404 &value, sizeof(value)))
1405 wstats->discard.misc += value;
1406 if (!wl3501_get_mib_value(this, WL3501_MIB_ATTR_FRAME_DUPLICATE_COUNT,
1407 &value, sizeof(value)))
1408 wstats->discard.misc += value;
1409 return wstats;
1410}
1411
1412/**
1413 * wl3501_detach - deletes a driver "instance"
1414 * @link - FILL_IN
1415 *
1416 * This deletes a driver "instance". The device is de-registered with Card
1417 * Services. If it has been released, all local data structures are freed.
1418 * Otherwise, the structures will be freed when the device is released.
1419 */
1420static void wl3501_detach(struct pcmcia_device *link)
1421{
1422 struct net_device *dev = link->priv;
1423
1424 /* If the device is currently configured and active, we won't actually
1425 * delete it yet. Instead, it is marked so that when the release()
1426 * function is called, that will trigger a proper detach(). */
1427
1428 while (link->open > 0)
1429 wl3501_close(dev);
1430
1431 netif_device_detach(dev);
1432 wl3501_release(link);
1433
1434 unregister_netdev(dev);
1435
1436 if (link->priv)
1437 free_netdev(link->priv);
1438}
1439
1440static int wl3501_get_name(struct net_device *dev, struct iw_request_info *info,
1441 union iwreq_data *wrqu, char *extra)
1442{
1443 strlcpy(wrqu->name, "IEEE 802.11-DS", sizeof(wrqu->name));
1444 return 0;
1445}
1446
1447static int wl3501_set_freq(struct net_device *dev, struct iw_request_info *info,
1448 union iwreq_data *wrqu, char *extra)
1449{
1450 struct wl3501_card *this = netdev_priv(dev);
1451 int channel = wrqu->freq.m;
1452 int rc = -EINVAL;
1453
1454 if (iw_valid_channel(this->reg_domain, channel)) {
1455 this->chan = channel;
1456 rc = wl3501_reset(dev);
1457 }
1458 return rc;
1459}
1460
1461static int wl3501_get_freq(struct net_device *dev, struct iw_request_info *info,
1462 union iwreq_data *wrqu, char *extra)
1463{
1464 struct wl3501_card *this = netdev_priv(dev);
1465
1466 wrqu->freq.m = 100000 *
1467 ieee80211_channel_to_frequency(this->chan, NL80211_BAND_2GHZ);
1468 wrqu->freq.e = 1;
1469 return 0;
1470}
1471
1472static int wl3501_set_mode(struct net_device *dev, struct iw_request_info *info,
1473 union iwreq_data *wrqu, char *extra)
1474{
1475 int rc = -EINVAL;
1476
1477 if (wrqu->mode == IW_MODE_INFRA ||
1478 wrqu->mode == IW_MODE_ADHOC ||
1479 wrqu->mode == IW_MODE_AUTO) {
1480 struct wl3501_card *this = netdev_priv(dev);
1481
1482 this->net_type = wrqu->mode;
1483 rc = wl3501_reset(dev);
1484 }
1485 return rc;
1486}
1487
1488static int wl3501_get_mode(struct net_device *dev, struct iw_request_info *info,
1489 union iwreq_data *wrqu, char *extra)
1490{
1491 struct wl3501_card *this = netdev_priv(dev);
1492
1493 wrqu->mode = this->net_type;
1494 return 0;
1495}
1496
1497static int wl3501_get_sens(struct net_device *dev, struct iw_request_info *info,
1498 union iwreq_data *wrqu, char *extra)
1499{
1500 struct wl3501_card *this = netdev_priv(dev);
1501
1502 wrqu->sens.value = this->rssi;
1503 wrqu->sens.disabled = !wrqu->sens.value;
1504 wrqu->sens.fixed = 1;
1505 return 0;
1506}
1507
1508static int wl3501_get_range(struct net_device *dev,
1509 struct iw_request_info *info,
1510 union iwreq_data *wrqu, char *extra)
1511{
1512 struct iw_range *range = (struct iw_range *)extra;
1513
1514 /* Set the length (very important for backward compatibility) */
1515 wrqu->data.length = sizeof(*range);
1516
1517 /* Set all the info we don't care or don't know about to zero */
1518 memset(range, 0, sizeof(*range));
1519
1520 /* Set the Wireless Extension versions */
1521 range->we_version_compiled = WIRELESS_EXT;
1522 range->we_version_source = 1;
1523 range->throughput = 2 * 1000 * 1000; /* ~2 Mb/s */
1524 /* FIXME: study the code to fill in more fields... */
1525 return 0;
1526}
1527
1528static int wl3501_set_wap(struct net_device *dev, struct iw_request_info *info,
1529 union iwreq_data *wrqu, char *extra)
1530{
1531 struct wl3501_card *this = netdev_priv(dev);
1532 int rc = -EINVAL;
1533
1534 /* FIXME: we support other ARPHRDs...*/
1535 if (wrqu->ap_addr.sa_family != ARPHRD_ETHER)
1536 goto out;
1537 if (is_broadcast_ether_addr(wrqu->ap_addr.sa_data)) {
1538 /* FIXME: rescan? */
1539 } else
1540 memcpy(this->bssid, wrqu->ap_addr.sa_data, ETH_ALEN);
1541 /* FIXME: rescan? deassoc & scan? */
1542 rc = 0;
1543out:
1544 return rc;
1545}
1546
1547static int wl3501_get_wap(struct net_device *dev, struct iw_request_info *info,
1548 union iwreq_data *wrqu, char *extra)
1549{
1550 struct wl3501_card *this = netdev_priv(dev);
1551
1552 wrqu->ap_addr.sa_family = ARPHRD_ETHER;
1553 memcpy(wrqu->ap_addr.sa_data, this->bssid, ETH_ALEN);
1554 return 0;
1555}
1556
1557static int wl3501_set_scan(struct net_device *dev, struct iw_request_info *info,
1558 union iwreq_data *wrqu, char *extra)
1559{
1560 /*
1561 * FIXME: trigger scanning with a reset, yes, I'm lazy
1562 */
1563 return wl3501_reset(dev);
1564}
1565
1566static int wl3501_get_scan(struct net_device *dev, struct iw_request_info *info,
1567 union iwreq_data *wrqu, char *extra)
1568{
1569 struct wl3501_card *this = netdev_priv(dev);
1570 int i;
1571 char *current_ev = extra;
1572 struct iw_event iwe;
1573
1574 for (i = 0; i < this->bss_cnt; ++i) {
1575 iwe.cmd = SIOCGIWAP;
1576 iwe.u.ap_addr.sa_family = ARPHRD_ETHER;
1577 memcpy(iwe.u.ap_addr.sa_data, this->bss_set[i].bssid, ETH_ALEN);
1578 current_ev = iwe_stream_add_event(info, current_ev,
1579 extra + IW_SCAN_MAX_DATA,
1580 &iwe, IW_EV_ADDR_LEN);
1581 iwe.cmd = SIOCGIWESSID;
1582 iwe.u.data.flags = 1;
1583 iwe.u.data.length = this->bss_set[i].ssid.el.len;
1584 current_ev = iwe_stream_add_point(info, current_ev,
1585 extra + IW_SCAN_MAX_DATA,
1586 &iwe,
1587 this->bss_set[i].ssid.essid);
1588 iwe.cmd = SIOCGIWMODE;
1589 iwe.u.mode = this->bss_set[i].bss_type;
1590 current_ev = iwe_stream_add_event(info, current_ev,
1591 extra + IW_SCAN_MAX_DATA,
1592 &iwe, IW_EV_UINT_LEN);
1593 iwe.cmd = SIOCGIWFREQ;
1594 iwe.u.freq.m = this->bss_set[i].ds_pset.chan;
1595 iwe.u.freq.e = 0;
1596 current_ev = iwe_stream_add_event(info, current_ev,
1597 extra + IW_SCAN_MAX_DATA,
1598 &iwe, IW_EV_FREQ_LEN);
1599 iwe.cmd = SIOCGIWENCODE;
1600 if (this->bss_set[i].cap_info & WL3501_MGMT_CAPABILITY_PRIVACY)
1601 iwe.u.data.flags = IW_ENCODE_ENABLED | IW_ENCODE_NOKEY;
1602 else
1603 iwe.u.data.flags = IW_ENCODE_DISABLED;
1604 iwe.u.data.length = 0;
1605 current_ev = iwe_stream_add_point(info, current_ev,
1606 extra + IW_SCAN_MAX_DATA,
1607 &iwe, NULL);
1608 }
1609 /* Length of data */
1610 wrqu->data.length = (current_ev - extra);
1611 wrqu->data.flags = 0; /* FIXME: set properly these flags */
1612 return 0;
1613}
1614
1615static int wl3501_set_essid(struct net_device *dev,
1616 struct iw_request_info *info,
1617 union iwreq_data *wrqu, char *extra)
1618{
1619 struct wl3501_card *this = netdev_priv(dev);
1620
1621 if (wrqu->data.flags) {
1622 iw_set_mgmt_info_element(IW_MGMT_INFO_ELEMENT_SSID,
1623 &this->essid.el,
1624 extra, wrqu->data.length);
1625 } else { /* We accept any ESSID */
1626 iw_set_mgmt_info_element(IW_MGMT_INFO_ELEMENT_SSID,
1627 &this->essid.el, "ANY", 3);
1628 }
1629 return wl3501_reset(dev);
1630}
1631
1632static int wl3501_get_essid(struct net_device *dev,
1633 struct iw_request_info *info,
1634 union iwreq_data *wrqu, char *extra)
1635{
1636 struct wl3501_card *this = netdev_priv(dev);
1637 unsigned long flags;
1638
1639 spin_lock_irqsave(&this->lock, flags);
1640 wrqu->essid.flags = 1;
1641 wrqu->essid.length = this->essid.el.len;
1642 memcpy(extra, this->essid.essid, this->essid.el.len);
1643 spin_unlock_irqrestore(&this->lock, flags);
1644 return 0;
1645}
1646
1647static int wl3501_set_nick(struct net_device *dev, struct iw_request_info *info,
1648 union iwreq_data *wrqu, char *extra)
1649{
1650 struct wl3501_card *this = netdev_priv(dev);
1651
1652 if (wrqu->data.length > sizeof(this->nick))
1653 return -E2BIG;
1654 strlcpy(this->nick, extra, wrqu->data.length);
1655 return 0;
1656}
1657
1658static int wl3501_get_nick(struct net_device *dev, struct iw_request_info *info,
1659 union iwreq_data *wrqu, char *extra)
1660{
1661 struct wl3501_card *this = netdev_priv(dev);
1662
1663 strlcpy(extra, this->nick, 32);
1664 wrqu->data.length = strlen(extra);
1665 return 0;
1666}
1667
1668static int wl3501_get_rate(struct net_device *dev, struct iw_request_info *info,
1669 union iwreq_data *wrqu, char *extra)
1670{
1671 /*
1672 * FIXME: have to see from where to get this info, perhaps this card
1673 * works at 1 Mbit/s too... for now leave at 2 Mbit/s that is the most
1674 * common with the Planet Access Points. -acme
1675 */
1676 wrqu->bitrate.value = 2000000;
1677 wrqu->bitrate.fixed = 1;
1678 return 0;
1679}
1680
1681static int wl3501_get_rts_threshold(struct net_device *dev,
1682 struct iw_request_info *info,
1683 union iwreq_data *wrqu, char *extra)
1684{
1685 u16 threshold; /* size checked: it is u16 */
1686 struct wl3501_card *this = netdev_priv(dev);
1687 int rc = wl3501_get_mib_value(this, WL3501_MIB_ATTR_RTS_THRESHOLD,
1688 &threshold, sizeof(threshold));
1689 if (!rc) {
1690 wrqu->rts.value = threshold;
1691 wrqu->rts.disabled = threshold >= 2347;
1692 wrqu->rts.fixed = 1;
1693 }
1694 return rc;
1695}
1696
1697static int wl3501_get_frag_threshold(struct net_device *dev,
1698 struct iw_request_info *info,
1699 union iwreq_data *wrqu, char *extra)
1700{
1701 u16 threshold; /* size checked: it is u16 */
1702 struct wl3501_card *this = netdev_priv(dev);
1703 int rc = wl3501_get_mib_value(this, WL3501_MIB_ATTR_FRAG_THRESHOLD,
1704 &threshold, sizeof(threshold));
1705 if (!rc) {
1706 wrqu->frag.value = threshold;
1707 wrqu->frag.disabled = threshold >= 2346;
1708 wrqu->frag.fixed = 1;
1709 }
1710 return rc;
1711}
1712
1713static int wl3501_get_txpow(struct net_device *dev,
1714 struct iw_request_info *info,
1715 union iwreq_data *wrqu, char *extra)
1716{
1717 u16 txpow;
1718 struct wl3501_card *this = netdev_priv(dev);
1719 int rc = wl3501_get_mib_value(this,
1720 WL3501_MIB_ATTR_CURRENT_TX_PWR_LEVEL,
1721 &txpow, sizeof(txpow));
1722 if (!rc) {
1723 wrqu->txpower.value = txpow;
1724 wrqu->txpower.disabled = 0;
1725 /*
1726 * From the MIB values I think this can be configurable,
1727 * as it lists several tx power levels -acme
1728 */
1729 wrqu->txpower.fixed = 0;
1730 wrqu->txpower.flags = IW_TXPOW_MWATT;
1731 }
1732 return rc;
1733}
1734
1735static int wl3501_get_retry(struct net_device *dev,
1736 struct iw_request_info *info,
1737 union iwreq_data *wrqu, char *extra)
1738{
1739 u8 retry; /* size checked: it is u8 */
1740 struct wl3501_card *this = netdev_priv(dev);
1741 int rc = wl3501_get_mib_value(this,
1742 WL3501_MIB_ATTR_LONG_RETRY_LIMIT,
1743 &retry, sizeof(retry));
1744 if (rc)
1745 goto out;
1746 if (wrqu->retry.flags & IW_RETRY_LONG) {
1747 wrqu->retry.flags = IW_RETRY_LIMIT | IW_RETRY_LONG;
1748 goto set_value;
1749 }
1750 rc = wl3501_get_mib_value(this, WL3501_MIB_ATTR_SHORT_RETRY_LIMIT,
1751 &retry, sizeof(retry));
1752 if (rc)
1753 goto out;
1754 wrqu->retry.flags = IW_RETRY_LIMIT | IW_RETRY_SHORT;
1755set_value:
1756 wrqu->retry.value = retry;
1757 wrqu->retry.disabled = 0;
1758out:
1759 return rc;
1760}
1761
1762static int wl3501_get_encode(struct net_device *dev,
1763 struct iw_request_info *info,
1764 union iwreq_data *wrqu, char *extra)
1765{
1766 u8 implemented, restricted, keys[100], len_keys, tocopy;
1767 struct wl3501_card *this = netdev_priv(dev);
1768 int rc = wl3501_get_mib_value(this,
1769 WL3501_MIB_ATTR_PRIV_OPT_IMPLEMENTED,
1770 &implemented, sizeof(implemented));
1771 if (rc)
1772 goto out;
1773 if (!implemented) {
1774 wrqu->encoding.flags = IW_ENCODE_DISABLED;
1775 goto out;
1776 }
1777 rc = wl3501_get_mib_value(this, WL3501_MIB_ATTR_EXCLUDE_UNENCRYPTED,
1778 &restricted, sizeof(restricted));
1779 if (rc)
1780 goto out;
1781 wrqu->encoding.flags = restricted ? IW_ENCODE_RESTRICTED :
1782 IW_ENCODE_OPEN;
1783 rc = wl3501_get_mib_value(this, WL3501_MIB_ATTR_WEP_KEY_MAPPINGS_LEN,
1784 &len_keys, sizeof(len_keys));
1785 if (rc)
1786 goto out;
1787 rc = wl3501_get_mib_value(this, WL3501_MIB_ATTR_WEP_KEY_MAPPINGS,
1788 keys, len_keys);
1789 if (rc)
1790 goto out;
1791 tocopy = min_t(u16, len_keys, wrqu->encoding.length);
1792 tocopy = min_t(u8, tocopy, 100);
1793 wrqu->encoding.length = tocopy;
1794 memcpy(extra, keys, tocopy);
1795out:
1796 return rc;
1797}
1798
1799static int wl3501_get_power(struct net_device *dev,
1800 struct iw_request_info *info,
1801 union iwreq_data *wrqu, char *extra)
1802{
1803 u8 pwr_state;
1804 struct wl3501_card *this = netdev_priv(dev);
1805 int rc = wl3501_get_mib_value(this,
1806 WL3501_MIB_ATTR_CURRENT_PWR_STATE,
1807 &pwr_state, sizeof(pwr_state));
1808 if (rc)
1809 goto out;
1810 wrqu->power.disabled = !pwr_state;
1811 wrqu->power.flags = IW_POWER_ON;
1812out:
1813 return rc;
1814}
1815
1816static const iw_handler wl3501_handler[] = {
1817 IW_HANDLER(SIOCGIWNAME, wl3501_get_name),
1818 IW_HANDLER(SIOCSIWFREQ, wl3501_set_freq),
1819 IW_HANDLER(SIOCGIWFREQ, wl3501_get_freq),
1820 IW_HANDLER(SIOCSIWMODE, wl3501_set_mode),
1821 IW_HANDLER(SIOCGIWMODE, wl3501_get_mode),
1822 IW_HANDLER(SIOCGIWSENS, wl3501_get_sens),
1823 IW_HANDLER(SIOCGIWRANGE, wl3501_get_range),
1824 IW_HANDLER(SIOCSIWSPY, iw_handler_set_spy),
1825 IW_HANDLER(SIOCGIWSPY, iw_handler_get_spy),
1826 IW_HANDLER(SIOCSIWTHRSPY, iw_handler_set_thrspy),
1827 IW_HANDLER(SIOCGIWTHRSPY, iw_handler_get_thrspy),
1828 IW_HANDLER(SIOCSIWAP, wl3501_set_wap),
1829 IW_HANDLER(SIOCGIWAP, wl3501_get_wap),
1830 IW_HANDLER(SIOCSIWSCAN, wl3501_set_scan),
1831 IW_HANDLER(SIOCGIWSCAN, wl3501_get_scan),
1832 IW_HANDLER(SIOCSIWESSID, wl3501_set_essid),
1833 IW_HANDLER(SIOCGIWESSID, wl3501_get_essid),
1834 IW_HANDLER(SIOCSIWNICKN, wl3501_set_nick),
1835 IW_HANDLER(SIOCGIWNICKN, wl3501_get_nick),
1836 IW_HANDLER(SIOCGIWRATE, wl3501_get_rate),
1837 IW_HANDLER(SIOCGIWRTS, wl3501_get_rts_threshold),
1838 IW_HANDLER(SIOCGIWFRAG, wl3501_get_frag_threshold),
1839 IW_HANDLER(SIOCGIWTXPOW, wl3501_get_txpow),
1840 IW_HANDLER(SIOCGIWRETRY, wl3501_get_retry),
1841 IW_HANDLER(SIOCGIWENCODE, wl3501_get_encode),
1842 IW_HANDLER(SIOCGIWPOWER, wl3501_get_power),
1843};
1844
1845static const struct iw_handler_def wl3501_handler_def = {
1846 .num_standard = ARRAY_SIZE(wl3501_handler),
1847 .standard = (iw_handler *)wl3501_handler,
1848 .get_wireless_stats = wl3501_get_wireless_stats,
1849};
1850
1851static const struct net_device_ops wl3501_netdev_ops = {
1852 .ndo_open = wl3501_open,
1853 .ndo_stop = wl3501_close,
1854 .ndo_start_xmit = wl3501_hard_start_xmit,
1855 .ndo_tx_timeout = wl3501_tx_timeout,
1856 .ndo_set_mac_address = eth_mac_addr,
1857 .ndo_validate_addr = eth_validate_addr,
1858};
1859
1860static int wl3501_probe(struct pcmcia_device *p_dev)
1861{
1862 struct net_device *dev;
1863 struct wl3501_card *this;
1864
1865 /* The io structure describes IO port mapping */
1866 p_dev->resource[0]->end = 16;
1867 p_dev->resource[0]->flags = IO_DATA_PATH_WIDTH_8;
1868
1869 /* General socket configuration */
1870 p_dev->config_flags = CONF_ENABLE_IRQ;
1871 p_dev->config_index = 1;
1872
1873 dev = alloc_etherdev(sizeof(struct wl3501_card));
1874 if (!dev)
1875 goto out_link;
1876
1877
1878 dev->netdev_ops = &wl3501_netdev_ops;
1879 dev->watchdog_timeo = 5 * HZ;
1880
1881 this = netdev_priv(dev);
1882 this->wireless_data.spy_data = &this->spy_data;
1883 this->p_dev = p_dev;
1884 dev->wireless_data = &this->wireless_data;
1885 dev->wireless_handlers = &wl3501_handler_def;
1886 netif_stop_queue(dev);
1887 p_dev->priv = dev;
1888
1889 return wl3501_config(p_dev);
1890out_link:
1891 return -ENOMEM;
1892}
1893
1894static int wl3501_config(struct pcmcia_device *link)
1895{
1896 struct net_device *dev = link->priv;
1897 int i = 0, j, ret;
1898 struct wl3501_card *this;
1899
1900 /* Try allocating IO ports. This tries a few fixed addresses. If you
1901 * want, you can also read the card's config table to pick addresses --
1902 * see the serial driver for an example. */
1903 link->io_lines = 5;
1904
1905 for (j = 0x280; j < 0x400; j += 0x20) {
1906 /* The '^0x300' is so that we probe 0x300-0x3ff first, then
1907 * 0x200-0x2ff, and so on, because this seems safer */
1908 link->resource[0]->start = j;
1909 link->resource[1]->start = link->resource[0]->start + 0x10;
1910 i = pcmcia_request_io(link);
1911 if (i == 0)
1912 break;
1913 }
1914 if (i != 0)
1915 goto failed;
1916
1917 /* Now allocate an interrupt line. Note that this does not actually
1918 * assign a handler to the interrupt. */
1919
1920 ret = pcmcia_request_irq(link, wl3501_interrupt);
1921 if (ret)
1922 goto failed;
1923
1924 ret = pcmcia_enable_device(link);
1925 if (ret)
1926 goto failed;
1927
1928 dev->irq = link->irq;
1929 dev->base_addr = link->resource[0]->start;
1930 SET_NETDEV_DEV(dev, &link->dev);
1931 if (register_netdev(dev)) {
1932 printk(KERN_NOTICE "wl3501_cs: register_netdev() failed\n");
1933 goto failed;
1934 }
1935
1936 this = netdev_priv(dev);
1937
1938 this->base_addr = dev->base_addr;
1939
1940 if (!wl3501_get_flash_mac_addr(this)) {
1941 printk(KERN_WARNING "%s: Can't read MAC addr in flash ROM?\n",
1942 dev->name);
1943 unregister_netdev(dev);
1944 goto failed;
1945 }
1946
1947 for (i = 0; i < 6; i++)
1948 dev->dev_addr[i] = ((char *)&this->mac_addr)[i];
1949
1950 /* print probe information */
1951 printk(KERN_INFO "%s: wl3501 @ 0x%3.3x, IRQ %d, "
1952 "MAC addr in flash ROM:%pM\n",
1953 dev->name, this->base_addr, (int)dev->irq,
1954 dev->dev_addr);
1955 /*
1956 * Initialize card parameters - added by jss
1957 */
1958 this->net_type = IW_MODE_INFRA;
1959 this->bss_cnt = 0;
1960 this->join_sta_bss = 0;
1961 this->adhoc_times = 0;
1962 iw_set_mgmt_info_element(IW_MGMT_INFO_ELEMENT_SSID, &this->essid.el,
1963 "ANY", 3);
1964 this->card_name[0] = '\0';
1965 this->firmware_date[0] = '\0';
1966 this->rssi = 255;
1967 this->chan = iw_default_channel(this->reg_domain);
1968 strlcpy(this->nick, "Planet WL3501", sizeof(this->nick));
1969 spin_lock_init(&this->lock);
1970 init_waitqueue_head(&this->wait);
1971 netif_start_queue(dev);
1972 return 0;
1973
1974failed:
1975 wl3501_release(link);
1976 return -ENODEV;
1977}
1978
1979static void wl3501_release(struct pcmcia_device *link)
1980{
1981 pcmcia_disable_device(link);
1982}
1983
1984static int wl3501_suspend(struct pcmcia_device *link)
1985{
1986 struct net_device *dev = link->priv;
1987
1988 wl3501_pwr_mgmt(netdev_priv(dev), WL3501_SUSPEND);
1989 if (link->open)
1990 netif_device_detach(dev);
1991
1992 return 0;
1993}
1994
1995static int wl3501_resume(struct pcmcia_device *link)
1996{
1997 struct net_device *dev = link->priv;
1998
1999 wl3501_pwr_mgmt(netdev_priv(dev), WL3501_RESUME);
2000 if (link->open) {
2001 wl3501_reset(dev);
2002 netif_device_attach(dev);
2003 }
2004
2005 return 0;
2006}
2007
2008
2009static const struct pcmcia_device_id wl3501_ids[] = {
2010 PCMCIA_DEVICE_MANF_CARD(0xd601, 0x0001),
2011 PCMCIA_DEVICE_NULL
2012};
2013MODULE_DEVICE_TABLE(pcmcia, wl3501_ids);
2014
2015static struct pcmcia_driver wl3501_driver = {
2016 .owner = THIS_MODULE,
2017 .name = "wl3501_cs",
2018 .probe = wl3501_probe,
2019 .remove = wl3501_detach,
2020 .id_table = wl3501_ids,
2021 .suspend = wl3501_suspend,
2022 .resume = wl3501_resume,
2023};
2024module_pcmcia_driver(wl3501_driver);
2025
2026MODULE_AUTHOR("Fox Chen <mhchen@golf.ccl.itri.org.tw>, "
2027 "Arnaldo Carvalho de Melo <acme@conectiva.com.br>,"
2028 "Gustavo Niemeyer <niemeyer@conectiva.com>");
2029MODULE_DESCRIPTION("Planet wl3501 wireless driver");
2030MODULE_LICENSE("GPL");
1// SPDX-License-Identifier: GPL-2.0-only
2/*
3 * WL3501 Wireless LAN PCMCIA Card Driver for Linux
4 * Written originally for Linux 2.0.30 by Fox Chen, mhchen@golf.ccl.itri.org.tw
5 * Ported to 2.2, 2.4 & 2.5 by Arnaldo Carvalho de Melo <acme@conectiva.com.br>
6 * Wireless extensions in 2.4 by Gustavo Niemeyer <niemeyer@conectiva.com>
7 *
8 * References used by Fox Chen while writing the original driver for 2.0.30:
9 *
10 * 1. WL24xx packet drivers (tooasm.asm)
11 * 2. Access Point Firmware Interface Specification for IEEE 802.11 SUTRO
12 * 3. IEEE 802.11
13 * 4. Linux network driver (/usr/src/linux/drivers/net)
14 * 5. ISA card driver - wl24.c
15 * 6. Linux PCMCIA skeleton driver - skeleton.c
16 * 7. Linux PCMCIA 3c589 network driver - 3c589_cs.c
17 *
18 * Tested with WL2400 firmware 1.2, Linux 2.0.30, and pcmcia-cs-2.9.12
19 * 1. Performance: about 165 Kbytes/sec in TCP/IP with Ad-Hoc mode.
20 * rsh 192.168.1.3 "dd if=/dev/zero bs=1k count=1000" > /dev/null
21 * (Specification 2M bits/sec. is about 250 Kbytes/sec., but we must deduct
22 * ETHER/IP/UDP/TCP header, and acknowledgement overhead)
23 *
24 * Tested with Planet AP in 2.4.17, 184 Kbytes/s in UDP in Infrastructure mode,
25 * 173 Kbytes/s in TCP.
26 *
27 * Tested with Planet AP in 2.5.73-bk, 216 Kbytes/s in Infrastructure mode
28 * with a SMP machine (dual pentium 100), using pktgen, 432 pps (pkt_size = 60)
29 */
30
31#include <linux/delay.h>
32#include <linux/types.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 <net/cfg80211.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 <linux/uaccess.h>
56
57#include "wl3501.h"
58
59#ifndef __i386__
60#define slow_down_io()
61#endif
62
63/* For rough constant delay */
64#define WL3501_NOPLOOP(n) { int x = 0; while (x++ < n) slow_down_io(); }
65
66
67
68#define wl3501_outb(a, b) { outb(a, b); slow_down_io(); }
69#define wl3501_outb_p(a, b) { outb_p(a, b); slow_down_io(); }
70#define wl3501_outsb(a, b, c) { outsb(a, b, c); slow_down_io(); }
71
72#define WL3501_RELEASE_TIMEOUT (25 * HZ)
73#define WL3501_MAX_ADHOC_TRIES 16
74
75#define WL3501_RESUME 0
76#define WL3501_SUSPEND 1
77
78static int wl3501_config(struct pcmcia_device *link);
79static void wl3501_release(struct pcmcia_device *link);
80
81static const struct {
82 int reg_domain;
83 int min, max, deflt;
84} iw_channel_table[] = {
85 {
86 .reg_domain = IW_REG_DOMAIN_FCC,
87 .min = 1,
88 .max = 11,
89 .deflt = 1,
90 },
91 {
92 .reg_domain = IW_REG_DOMAIN_DOC,
93 .min = 1,
94 .max = 11,
95 .deflt = 1,
96 },
97 {
98 .reg_domain = IW_REG_DOMAIN_ETSI,
99 .min = 1,
100 .max = 13,
101 .deflt = 1,
102 },
103 {
104 .reg_domain = IW_REG_DOMAIN_SPAIN,
105 .min = 10,
106 .max = 11,
107 .deflt = 10,
108 },
109 {
110 .reg_domain = IW_REG_DOMAIN_FRANCE,
111 .min = 10,
112 .max = 13,
113 .deflt = 10,
114 },
115 {
116 .reg_domain = IW_REG_DOMAIN_MKK,
117 .min = 14,
118 .max = 14,
119 .deflt = 14,
120 },
121 {
122 .reg_domain = IW_REG_DOMAIN_MKK1,
123 .min = 1,
124 .max = 14,
125 .deflt = 1,
126 },
127 {
128 .reg_domain = IW_REG_DOMAIN_ISRAEL,
129 .min = 3,
130 .max = 9,
131 .deflt = 9,
132 },
133};
134
135/**
136 * iw_valid_channel - validate channel in regulatory domain
137 * @reg_domain: regulatory domain
138 * @channel: channel to validate
139 *
140 * Returns 0 if invalid in the specified regulatory domain, non-zero if valid.
141 */
142static int iw_valid_channel(int reg_domain, int channel)
143{
144 int i, rc = 0;
145
146 for (i = 0; i < ARRAY_SIZE(iw_channel_table); i++)
147 if (reg_domain == iw_channel_table[i].reg_domain) {
148 rc = channel >= iw_channel_table[i].min &&
149 channel <= iw_channel_table[i].max;
150 break;
151 }
152 return rc;
153}
154
155/**
156 * iw_default_channel - get default channel for a regulatory domain
157 * @reg_domain: regulatory domain
158 *
159 * Returns the default channel for a regulatory domain
160 */
161static int iw_default_channel(int reg_domain)
162{
163 int i, rc = 1;
164
165 for (i = 0; i < ARRAY_SIZE(iw_channel_table); i++)
166 if (reg_domain == iw_channel_table[i].reg_domain) {
167 rc = iw_channel_table[i].deflt;
168 break;
169 }
170 return rc;
171}
172
173static void iw_set_mgmt_info_element(enum iw_mgmt_info_element_ids id,
174 struct iw_mgmt_info_element *el,
175 void *value, int len)
176{
177 el->id = id;
178 el->len = len;
179 memcpy(el->data, value, len);
180}
181
182static void iw_copy_mgmt_info_element(struct iw_mgmt_info_element *to,
183 struct iw_mgmt_info_element *from)
184{
185 iw_set_mgmt_info_element(from->id, to, from->data, from->len);
186}
187
188static inline void wl3501_switch_page(struct wl3501_card *this, u8 page)
189{
190 wl3501_outb(page, this->base_addr + WL3501_NIC_BSS);
191}
192
193/*
194 * Get Ethernet MAC address.
195 *
196 * WARNING: We switch to FPAGE0 and switc back again.
197 * Making sure there is no other WL function beening called by ISR.
198 */
199static int wl3501_get_flash_mac_addr(struct wl3501_card *this)
200{
201 int base_addr = this->base_addr;
202
203 /* get MAC addr */
204 wl3501_outb(WL3501_BSS_FPAGE3, base_addr + WL3501_NIC_BSS); /* BSS */
205 wl3501_outb(0x00, base_addr + WL3501_NIC_LMAL); /* LMAL */
206 wl3501_outb(0x40, base_addr + WL3501_NIC_LMAH); /* LMAH */
207
208 /* wait for reading EEPROM */
209 WL3501_NOPLOOP(100);
210 this->mac_addr[0] = inb(base_addr + WL3501_NIC_IODPA);
211 WL3501_NOPLOOP(100);
212 this->mac_addr[1] = inb(base_addr + WL3501_NIC_IODPA);
213 WL3501_NOPLOOP(100);
214 this->mac_addr[2] = inb(base_addr + WL3501_NIC_IODPA);
215 WL3501_NOPLOOP(100);
216 this->mac_addr[3] = inb(base_addr + WL3501_NIC_IODPA);
217 WL3501_NOPLOOP(100);
218 this->mac_addr[4] = inb(base_addr + WL3501_NIC_IODPA);
219 WL3501_NOPLOOP(100);
220 this->mac_addr[5] = inb(base_addr + WL3501_NIC_IODPA);
221 WL3501_NOPLOOP(100);
222 this->reg_domain = inb(base_addr + WL3501_NIC_IODPA);
223 WL3501_NOPLOOP(100);
224 wl3501_outb(WL3501_BSS_FPAGE0, base_addr + WL3501_NIC_BSS);
225 wl3501_outb(0x04, base_addr + WL3501_NIC_LMAL);
226 wl3501_outb(0x40, base_addr + WL3501_NIC_LMAH);
227 WL3501_NOPLOOP(100);
228 this->version[0] = inb(base_addr + WL3501_NIC_IODPA);
229 WL3501_NOPLOOP(100);
230 this->version[1] = inb(base_addr + WL3501_NIC_IODPA);
231 /* switch to SRAM Page 0 (for safety) */
232 wl3501_switch_page(this, WL3501_BSS_SPAGE0);
233
234 /* The MAC addr should be 00:60:... */
235 return this->mac_addr[0] == 0x00 && this->mac_addr[1] == 0x60;
236}
237
238/**
239 * wl3501_set_to_wla - Move 'size' bytes from PC to card
240 * @this: 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 */
247static 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 * @this: Card
264 * @src: Card addressing space
265 * @dest: PC addressing space
266 * @size: Bytes to move
267 *
268 * Move 'size' bytes from card to PC. (Shouldn't be interrupted)
269 */
270static void wl3501_get_from_wla(struct wl3501_card *this, u16 src, void *dest,
271 int size)
272{
273 /* switch to SRAM Page 0 */
274 wl3501_switch_page(this, (src & 0x8000) ? WL3501_BSS_SPAGE1 :
275 WL3501_BSS_SPAGE0);
276 /* set LMAL and LMAH */
277 wl3501_outb(src & 0xff, this->base_addr + WL3501_NIC_LMAL);
278 wl3501_outb((src >> 8) & 0x7f, this->base_addr + WL3501_NIC_LMAH);
279
280 /* rep get from Port A */
281 insb(this->base_addr + WL3501_NIC_IODPA, dest, size);
282}
283
284/*
285 * Get/Allocate a free Tx Data Buffer
286 *
287 * *--------------*-----------------*----------------------------------*
288 * | PLCP | MAC Header | DST SRC Data ... |
289 * | (24 bytes) | (30 bytes) | (6) (6) (Ethernet Row Data) |
290 * *--------------*-----------------*----------------------------------*
291 * \ \- IEEE 802.11 -/ \-------------- len --------------/
292 * \-struct wl3501_80211_tx_hdr--/ \-------- Ethernet Frame -------/
293 *
294 * Return = Position in Card
295 */
296static u16 wl3501_get_tx_buffer(struct wl3501_card *this, u16 len)
297{
298 u16 next, blk_cnt = 0, zero = 0;
299 u16 full_len = sizeof(struct wl3501_80211_tx_hdr) + len;
300 u16 ret = 0;
301
302 if (full_len > this->tx_buffer_cnt * 254)
303 goto out;
304 ret = this->tx_buffer_head;
305 while (full_len) {
306 if (full_len < 254)
307 full_len = 0;
308 else
309 full_len -= 254;
310 wl3501_get_from_wla(this, this->tx_buffer_head, &next,
311 sizeof(next));
312 if (!full_len)
313 wl3501_set_to_wla(this, this->tx_buffer_head, &zero,
314 sizeof(zero));
315 this->tx_buffer_head = next;
316 blk_cnt++;
317 /* if buffer is not enough */
318 if (!next && full_len) {
319 this->tx_buffer_head = ret;
320 ret = 0;
321 goto out;
322 }
323 }
324 this->tx_buffer_cnt -= blk_cnt;
325out:
326 return ret;
327}
328
329/*
330 * Free an allocated Tx Buffer. ptr must be correct position.
331 */
332static void wl3501_free_tx_buffer(struct wl3501_card *this, u16 ptr)
333{
334 /* check if all space is not free */
335 if (!this->tx_buffer_head)
336 this->tx_buffer_head = ptr;
337 else
338 wl3501_set_to_wla(this, this->tx_buffer_tail,
339 &ptr, sizeof(ptr));
340 while (ptr) {
341 u16 next;
342
343 this->tx_buffer_cnt++;
344 wl3501_get_from_wla(this, ptr, &next, sizeof(next));
345 this->tx_buffer_tail = ptr;
346 ptr = next;
347 }
348}
349
350static int wl3501_esbq_req_test(struct wl3501_card *this)
351{
352 u8 tmp = 0;
353
354 wl3501_get_from_wla(this, this->esbq_req_head + 3, &tmp, sizeof(tmp));
355 return tmp & 0x80;
356}
357
358static void wl3501_esbq_req(struct wl3501_card *this, u16 *ptr)
359{
360 u16 tmp = 0;
361
362 wl3501_set_to_wla(this, this->esbq_req_head, ptr, 2);
363 wl3501_set_to_wla(this, this->esbq_req_head + 2, &tmp, sizeof(tmp));
364 this->esbq_req_head += 4;
365 if (this->esbq_req_head >= this->esbq_req_end)
366 this->esbq_req_head = this->esbq_req_start;
367}
368
369static int wl3501_esbq_exec(struct wl3501_card *this, void *sig, int sig_size)
370{
371 int rc = -EIO;
372
373 if (wl3501_esbq_req_test(this)) {
374 u16 ptr = wl3501_get_tx_buffer(this, sig_size);
375 if (ptr) {
376 wl3501_set_to_wla(this, ptr, sig, sig_size);
377 wl3501_esbq_req(this, &ptr);
378 rc = 0;
379 }
380 }
381 return rc;
382}
383
384static int wl3501_request_mib(struct wl3501_card *this, u8 index, void *bf)
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 rc = 0;
401 }
402 }
403 spin_unlock_irqrestore(&this->lock, flags);
404
405 return rc;
406}
407
408static int wl3501_get_mib_value(struct wl3501_card *this, u8 index,
409 void *bf, int size)
410{
411 int rc;
412
413 rc = wl3501_request_mib(this, index, bf);
414 if (rc)
415 return rc;
416
417 rc = wait_event_interruptible(this->wait,
418 this->sig_get_confirm.mib_status != 255);
419 if (rc)
420 return rc;
421
422 memcpy(bf, this->sig_get_confirm.mib_value, size);
423 return 0;
424}
425
426static int wl3501_pwr_mgmt(struct wl3501_card *this, int suspend)
427{
428 struct wl3501_pwr_mgmt_req sig = {
429 .sig_id = WL3501_SIG_PWR_MGMT_REQ,
430 .pwr_save = suspend,
431 .wake_up = !suspend,
432 .receive_dtims = 10,
433 };
434 unsigned long flags;
435 int rc = -EIO;
436
437 spin_lock_irqsave(&this->lock, flags);
438 if (wl3501_esbq_req_test(this)) {
439 u16 ptr = wl3501_get_tx_buffer(this, sizeof(sig));
440 if (ptr) {
441 wl3501_set_to_wla(this, ptr, &sig, sizeof(sig));
442 wl3501_esbq_req(this, &ptr);
443 this->sig_pwr_mgmt_confirm.status = 255;
444 spin_unlock_irqrestore(&this->lock, flags);
445 rc = wait_event_interruptible(this->wait,
446 this->sig_pwr_mgmt_confirm.status != 255);
447 printk(KERN_INFO "%s: %s status=%d\n", __func__,
448 suspend ? "suspend" : "resume",
449 this->sig_pwr_mgmt_confirm.status);
450 goto out;
451 }
452 }
453 spin_unlock_irqrestore(&this->lock, flags);
454out:
455 return rc;
456}
457
458/**
459 * wl3501_send_pkt - Send a packet.
460 * @this: Card
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 * @len: Packet length
464 * Ref: IEEE 802.11
465 */
466static int wl3501_send_pkt(struct wl3501_card *this, u8 *data, u16 len)
467{
468 u16 bf, sig_bf, next, tmplen, pktlen;
469 struct wl3501_md_req sig = {
470 .sig_id = WL3501_SIG_MD_REQ,
471 };
472 size_t sig_addr_len = sizeof(sig.addr);
473 u8 *pdata = (char *)data;
474 int rc = -EIO;
475
476 if (wl3501_esbq_req_test(this)) {
477 sig_bf = wl3501_get_tx_buffer(this, sizeof(sig));
478 rc = -ENOMEM;
479 if (!sig_bf) /* No free buffer available */
480 goto out;
481 bf = wl3501_get_tx_buffer(this, len + 26 + 24);
482 if (!bf) {
483 /* No free buffer available */
484 wl3501_free_tx_buffer(this, sig_bf);
485 goto out;
486 }
487 rc = 0;
488 memcpy(&sig.addr, pdata, sig_addr_len);
489 pktlen = len - sig_addr_len;
490 pdata += sig_addr_len;
491 sig.data = bf;
492 if (((*pdata) * 256 + (*(pdata + 1))) > 1500) {
493 u8 addr4[ETH_ALEN] = {
494 [0] = 0xAA, [1] = 0xAA, [2] = 0x03, [4] = 0x00,
495 };
496
497 wl3501_set_to_wla(this, bf + 2 +
498 offsetof(struct wl3501_tx_hdr, addr4),
499 addr4, sizeof(addr4));
500 sig.size = pktlen + 24 + 4 + 6;
501 if (pktlen > (254 - sizeof(struct wl3501_tx_hdr))) {
502 tmplen = 254 - sizeof(struct wl3501_tx_hdr);
503 pktlen -= tmplen;
504 } else {
505 tmplen = pktlen;
506 pktlen = 0;
507 }
508 wl3501_set_to_wla(this,
509 bf + 2 + sizeof(struct wl3501_tx_hdr),
510 pdata, tmplen);
511 pdata += tmplen;
512 wl3501_get_from_wla(this, bf, &next, sizeof(next));
513 bf = next;
514 } else {
515 sig.size = pktlen + 24 + 4 - 2;
516 pdata += 2;
517 pktlen -= 2;
518 if (pktlen > (254 - sizeof(struct wl3501_tx_hdr) + 6)) {
519 tmplen = 254 - sizeof(struct wl3501_tx_hdr) + 6;
520 pktlen -= tmplen;
521 } else {
522 tmplen = pktlen;
523 pktlen = 0;
524 }
525 wl3501_set_to_wla(this, bf + 2 +
526 offsetof(struct wl3501_tx_hdr, addr4),
527 pdata, tmplen);
528 pdata += tmplen;
529 wl3501_get_from_wla(this, bf, &next, sizeof(next));
530 bf = next;
531 }
532 while (pktlen > 0) {
533 if (pktlen > 254) {
534 tmplen = 254;
535 pktlen -= 254;
536 } else {
537 tmplen = pktlen;
538 pktlen = 0;
539 }
540 wl3501_set_to_wla(this, bf + 2, pdata, tmplen);
541 pdata += tmplen;
542 wl3501_get_from_wla(this, bf, &next, sizeof(next));
543 bf = next;
544 }
545 wl3501_set_to_wla(this, sig_bf, &sig, sizeof(sig));
546 wl3501_esbq_req(this, &sig_bf);
547 }
548out:
549 return rc;
550}
551
552static int wl3501_mgmt_resync(struct wl3501_card *this)
553{
554 struct wl3501_resync_req sig = {
555 .sig_id = WL3501_SIG_RESYNC_REQ,
556 };
557
558 return wl3501_esbq_exec(this, &sig, sizeof(sig));
559}
560
561static inline int wl3501_fw_bss_type(struct wl3501_card *this)
562{
563 return this->net_type == IW_MODE_INFRA ? WL3501_NET_TYPE_INFRA :
564 WL3501_NET_TYPE_ADHOC;
565}
566
567static inline int wl3501_fw_cap_info(struct wl3501_card *this)
568{
569 return this->net_type == IW_MODE_INFRA ? WL3501_MGMT_CAPABILITY_ESS :
570 WL3501_MGMT_CAPABILITY_IBSS;
571}
572
573static int wl3501_mgmt_scan(struct wl3501_card *this, u16 chan_time)
574{
575 struct wl3501_scan_req sig = {
576 .sig_id = WL3501_SIG_SCAN_REQ,
577 .scan_type = WL3501_SCAN_TYPE_ACTIVE,
578 .probe_delay = 0x10,
579 .min_chan_time = chan_time,
580 .max_chan_time = chan_time,
581 .bss_type = wl3501_fw_bss_type(this),
582 };
583
584 this->bss_cnt = this->join_sta_bss = 0;
585 return wl3501_esbq_exec(this, &sig, sizeof(sig));
586}
587
588static int wl3501_mgmt_join(struct wl3501_card *this, u16 stas)
589{
590 struct wl3501_join_req sig = {
591 .sig_id = WL3501_SIG_JOIN_REQ,
592 .timeout = 10,
593 .req.ds_pset = {
594 .el = {
595 .id = IW_MGMT_INFO_ELEMENT_DS_PARAMETER_SET,
596 .len = 1,
597 },
598 .chan = this->chan,
599 },
600 };
601
602 memcpy(&sig.req, &this->bss_set[stas].req, sizeof(sig.req));
603 return wl3501_esbq_exec(this, &sig, sizeof(sig));
604}
605
606static int wl3501_mgmt_start(struct wl3501_card *this)
607{
608 struct wl3501_start_req sig = {
609 .sig_id = WL3501_SIG_START_REQ,
610 .beacon_period = 400,
611 .dtim_period = 1,
612 .ds_pset = {
613 .el = {
614 .id = IW_MGMT_INFO_ELEMENT_DS_PARAMETER_SET,
615 .len = 1,
616 },
617 .chan = this->chan,
618 },
619 .bss_basic_rset = {
620 .el = {
621 .id = IW_MGMT_INFO_ELEMENT_SUPPORTED_RATES,
622 .len = 2,
623 },
624 .data_rate_labels = {
625 [0] = IW_MGMT_RATE_LABEL_MANDATORY |
626 IW_MGMT_RATE_LABEL_1MBIT,
627 [1] = IW_MGMT_RATE_LABEL_MANDATORY |
628 IW_MGMT_RATE_LABEL_2MBIT,
629 },
630 },
631 .operational_rset = {
632 .el = {
633 .id = IW_MGMT_INFO_ELEMENT_SUPPORTED_RATES,
634 .len = 2,
635 },
636 .data_rate_labels = {
637 [0] = IW_MGMT_RATE_LABEL_MANDATORY |
638 IW_MGMT_RATE_LABEL_1MBIT,
639 [1] = IW_MGMT_RATE_LABEL_MANDATORY |
640 IW_MGMT_RATE_LABEL_2MBIT,
641 },
642 },
643 .ibss_pset = {
644 .el = {
645 .id = IW_MGMT_INFO_ELEMENT_IBSS_PARAMETER_SET,
646 .len = 2,
647 },
648 .atim_window = 10,
649 },
650 .bss_type = wl3501_fw_bss_type(this),
651 .cap_info = wl3501_fw_cap_info(this),
652 };
653
654 iw_copy_mgmt_info_element(&sig.ssid.el, &this->essid.el);
655 iw_copy_mgmt_info_element(&this->keep_essid.el, &this->essid.el);
656 return wl3501_esbq_exec(this, &sig, sizeof(sig));
657}
658
659static void wl3501_mgmt_scan_confirm(struct wl3501_card *this, u16 addr)
660{
661 u16 i = 0;
662 int matchflag = 0;
663 struct wl3501_scan_confirm sig;
664
665 pr_debug("entry");
666 wl3501_get_from_wla(this, addr, &sig, sizeof(sig));
667 if (sig.status == WL3501_STATUS_SUCCESS) {
668 pr_debug("success");
669 if ((this->net_type == IW_MODE_INFRA &&
670 (sig.req.cap_info & WL3501_MGMT_CAPABILITY_ESS)) ||
671 (this->net_type == IW_MODE_ADHOC &&
672 (sig.req.cap_info & WL3501_MGMT_CAPABILITY_IBSS)) ||
673 this->net_type == IW_MODE_AUTO) {
674 if (!this->essid.el.len)
675 matchflag = 1;
676 else if (this->essid.el.len == 3 &&
677 !memcmp(this->essid.essid, "ANY", 3))
678 matchflag = 1;
679 else if (this->essid.el.len != sig.req.ssid.el.len)
680 matchflag = 0;
681 else if (memcmp(this->essid.essid, sig.req.ssid.essid,
682 this->essid.el.len))
683 matchflag = 0;
684 else
685 matchflag = 1;
686 if (matchflag) {
687 for (i = 0; i < this->bss_cnt; i++) {
688 if (ether_addr_equal_unaligned(this->bss_set[i].req.bssid,
689 sig.req.bssid)) {
690 matchflag = 0;
691 break;
692 }
693 }
694 }
695 if (matchflag && (i < 20)) {
696 memcpy(&this->bss_set[i].req,
697 &sig.req, sizeof(sig.req));
698 this->bss_cnt++;
699 this->rssi = sig.rssi;
700 this->bss_set[i].rssi = sig.rssi;
701 }
702 }
703 } else if (sig.status == WL3501_STATUS_TIMEOUT) {
704 pr_debug("timeout");
705 this->join_sta_bss = 0;
706 for (i = this->join_sta_bss; i < this->bss_cnt; i++)
707 if (!wl3501_mgmt_join(this, i))
708 break;
709 this->join_sta_bss = i;
710 if (this->join_sta_bss == this->bss_cnt) {
711 if (this->net_type == IW_MODE_INFRA)
712 wl3501_mgmt_scan(this, 100);
713 else {
714 this->adhoc_times++;
715 if (this->adhoc_times > WL3501_MAX_ADHOC_TRIES)
716 wl3501_mgmt_start(this);
717 else
718 wl3501_mgmt_scan(this, 100);
719 }
720 }
721 }
722}
723
724/**
725 * wl3501_block_interrupt - Mask interrupt from SUTRO
726 * @this: Card
727 *
728 * Mask interrupt from SUTRO. (i.e. SUTRO cannot interrupt the HOST)
729 * Return: 1 if interrupt is originally enabled
730 */
731static int wl3501_block_interrupt(struct wl3501_card *this)
732{
733 u8 old = inb(this->base_addr + WL3501_NIC_GCR);
734 u8 new = old & (~(WL3501_GCR_ECINT | WL3501_GCR_INT2EC |
735 WL3501_GCR_ENECINT));
736
737 wl3501_outb(new, this->base_addr + WL3501_NIC_GCR);
738 return old & WL3501_GCR_ENECINT;
739}
740
741/**
742 * wl3501_unblock_interrupt - Enable interrupt from SUTRO
743 * @this: Card
744 *
745 * Enable interrupt from SUTRO. (i.e. SUTRO can interrupt the HOST)
746 * Return: 1 if interrupt is originally enabled
747 */
748static int wl3501_unblock_interrupt(struct wl3501_card *this)
749{
750 u8 old = inb(this->base_addr + WL3501_NIC_GCR);
751 u8 new = (old & ~(WL3501_GCR_ECINT | WL3501_GCR_INT2EC)) |
752 WL3501_GCR_ENECINT;
753
754 wl3501_outb(new, this->base_addr + WL3501_NIC_GCR);
755 return old & WL3501_GCR_ENECINT;
756}
757
758/**
759 * wl3501_receive - Receive data from Receive Queue.
760 *
761 * Receive data from Receive Queue.
762 *
763 * @this: card
764 * @bf: address of host
765 * @size: size of buffer.
766 */
767static u16 wl3501_receive(struct wl3501_card *this, u8 *bf, u16 size)
768{
769 u16 next_addr, next_addr1;
770 u8 *data = bf + 12;
771
772 size -= 12;
773 wl3501_get_from_wla(this, this->start_seg + 2,
774 &next_addr, sizeof(next_addr));
775 if (size > WL3501_BLKSZ - sizeof(struct wl3501_rx_hdr)) {
776 wl3501_get_from_wla(this,
777 this->start_seg +
778 sizeof(struct wl3501_rx_hdr), data,
779 WL3501_BLKSZ -
780 sizeof(struct wl3501_rx_hdr));
781 size -= WL3501_BLKSZ - sizeof(struct wl3501_rx_hdr);
782 data += WL3501_BLKSZ - sizeof(struct wl3501_rx_hdr);
783 } else {
784 wl3501_get_from_wla(this,
785 this->start_seg +
786 sizeof(struct wl3501_rx_hdr),
787 data, size);
788 size = 0;
789 }
790 while (size > 0) {
791 if (size > WL3501_BLKSZ - 5) {
792 wl3501_get_from_wla(this, next_addr + 5, data,
793 WL3501_BLKSZ - 5);
794 size -= WL3501_BLKSZ - 5;
795 data += WL3501_BLKSZ - 5;
796 wl3501_get_from_wla(this, next_addr + 2, &next_addr1,
797 sizeof(next_addr1));
798 next_addr = next_addr1;
799 } else {
800 wl3501_get_from_wla(this, next_addr + 5, data, size);
801 size = 0;
802 }
803 }
804 return 0;
805}
806
807static void wl3501_esbq_req_free(struct wl3501_card *this)
808{
809 u8 tmp;
810 u16 addr;
811
812 if (this->esbq_req_head == this->esbq_req_tail)
813 goto out;
814 wl3501_get_from_wla(this, this->esbq_req_tail + 3, &tmp, sizeof(tmp));
815 if (!(tmp & 0x80))
816 goto out;
817 wl3501_get_from_wla(this, this->esbq_req_tail, &addr, sizeof(addr));
818 wl3501_free_tx_buffer(this, addr);
819 this->esbq_req_tail += 4;
820 if (this->esbq_req_tail >= this->esbq_req_end)
821 this->esbq_req_tail = this->esbq_req_start;
822out:
823 return;
824}
825
826static int wl3501_esbq_confirm(struct wl3501_card *this)
827{
828 u8 tmp;
829
830 wl3501_get_from_wla(this, this->esbq_confirm + 3, &tmp, sizeof(tmp));
831 return tmp & 0x80;
832}
833
834static void wl3501_online(struct net_device *dev)
835{
836 struct wl3501_card *this = netdev_priv(dev);
837
838 printk(KERN_INFO "%s: Wireless LAN online. BSSID: %pM\n",
839 dev->name, this->bssid);
840 netif_wake_queue(dev);
841}
842
843static void wl3501_esbq_confirm_done(struct wl3501_card *this)
844{
845 u8 tmp = 0;
846
847 wl3501_set_to_wla(this, this->esbq_confirm + 3, &tmp, sizeof(tmp));
848 this->esbq_confirm += 4;
849 if (this->esbq_confirm >= this->esbq_confirm_end)
850 this->esbq_confirm = this->esbq_confirm_start;
851}
852
853static int wl3501_mgmt_auth(struct wl3501_card *this)
854{
855 struct wl3501_auth_req sig = {
856 .sig_id = WL3501_SIG_AUTH_REQ,
857 .type = WL3501_SYS_TYPE_OPEN,
858 .timeout = 1000,
859 };
860
861 pr_debug("entry");
862 memcpy(sig.mac_addr, this->bssid, ETH_ALEN);
863 return wl3501_esbq_exec(this, &sig, sizeof(sig));
864}
865
866static int wl3501_mgmt_association(struct wl3501_card *this)
867{
868 struct wl3501_assoc_req sig = {
869 .sig_id = WL3501_SIG_ASSOC_REQ,
870 .timeout = 1000,
871 .listen_interval = 5,
872 .cap_info = this->cap_info,
873 };
874
875 pr_debug("entry");
876 memcpy(sig.mac_addr, this->bssid, ETH_ALEN);
877 return wl3501_esbq_exec(this, &sig, sizeof(sig));
878}
879
880static void wl3501_mgmt_join_confirm(struct net_device *dev, u16 addr)
881{
882 struct wl3501_card *this = netdev_priv(dev);
883 struct wl3501_join_confirm sig;
884
885 pr_debug("entry");
886 wl3501_get_from_wla(this, addr, &sig, sizeof(sig));
887 if (sig.status == WL3501_STATUS_SUCCESS) {
888 if (this->net_type == IW_MODE_INFRA) {
889 if (this->join_sta_bss < this->bss_cnt) {
890 const int i = this->join_sta_bss;
891 memcpy(this->bssid,
892 this->bss_set[i].req.bssid, ETH_ALEN);
893 this->chan = this->bss_set[i].req.ds_pset.chan;
894 iw_copy_mgmt_info_element(&this->keep_essid.el,
895 &this->bss_set[i].req.ssid.el);
896 wl3501_mgmt_auth(this);
897 }
898 } else {
899 const int i = this->join_sta_bss;
900
901 memcpy(&this->bssid, &this->bss_set[i].req.bssid, ETH_ALEN);
902 this->chan = this->bss_set[i].req.ds_pset.chan;
903 iw_copy_mgmt_info_element(&this->keep_essid.el,
904 &this->bss_set[i].req.ssid.el);
905 wl3501_online(dev);
906 }
907 } else {
908 int i;
909 this->join_sta_bss++;
910 for (i = this->join_sta_bss; i < this->bss_cnt; i++)
911 if (!wl3501_mgmt_join(this, i))
912 break;
913 this->join_sta_bss = i;
914 if (this->join_sta_bss == this->bss_cnt) {
915 if (this->net_type == IW_MODE_INFRA)
916 wl3501_mgmt_scan(this, 100);
917 else {
918 this->adhoc_times++;
919 if (this->adhoc_times > WL3501_MAX_ADHOC_TRIES)
920 wl3501_mgmt_start(this);
921 else
922 wl3501_mgmt_scan(this, 100);
923 }
924 }
925 }
926}
927
928static inline void wl3501_alarm_interrupt(struct net_device *dev,
929 struct wl3501_card *this)
930{
931 if (this->net_type == IW_MODE_INFRA) {
932 printk(KERN_INFO "Wireless LAN offline\n");
933 netif_stop_queue(dev);
934 wl3501_mgmt_resync(this);
935 }
936}
937
938static inline void wl3501_md_confirm_interrupt(struct net_device *dev,
939 struct wl3501_card *this,
940 u16 addr)
941{
942 struct wl3501_md_confirm sig;
943
944 pr_debug("entry");
945 wl3501_get_from_wla(this, addr, &sig, sizeof(sig));
946 wl3501_free_tx_buffer(this, sig.data);
947 if (netif_queue_stopped(dev))
948 netif_wake_queue(dev);
949}
950
951static inline void wl3501_md_ind_interrupt(struct net_device *dev,
952 struct wl3501_card *this, u16 addr)
953{
954 struct wl3501_md_ind sig;
955 struct sk_buff *skb;
956 u8 rssi, addr4[ETH_ALEN];
957 u16 pkt_len;
958
959 wl3501_get_from_wla(this, addr, &sig, sizeof(sig));
960 this->start_seg = sig.data;
961 wl3501_get_from_wla(this,
962 sig.data + offsetof(struct wl3501_rx_hdr, rssi),
963 &rssi, sizeof(rssi));
964 this->rssi = rssi <= 63 ? (rssi * 100) / 64 : 255;
965
966 wl3501_get_from_wla(this,
967 sig.data +
968 offsetof(struct wl3501_rx_hdr, addr4),
969 &addr4, sizeof(addr4));
970 if (!(addr4[0] == 0xAA && addr4[1] == 0xAA &&
971 addr4[2] == 0x03 && addr4[4] == 0x00)) {
972 printk(KERN_INFO "Unsupported packet type!\n");
973 return;
974 }
975 pkt_len = sig.size + 12 - 24 - 4 - 6;
976
977 skb = dev_alloc_skb(pkt_len + 5);
978
979 if (!skb) {
980 printk(KERN_WARNING "%s: Can't alloc a sk_buff of size %d.\n",
981 dev->name, pkt_len);
982 dev->stats.rx_dropped++;
983 } else {
984 skb->dev = dev;
985 skb_reserve(skb, 2); /* IP headers on 16 bytes boundaries */
986 skb_copy_to_linear_data(skb, (unsigned char *)&sig.addr,
987 sizeof(sig.addr));
988 wl3501_receive(this, skb->data, pkt_len);
989 skb_put(skb, pkt_len);
990 skb->protocol = eth_type_trans(skb, dev);
991 dev->stats.rx_packets++;
992 dev->stats.rx_bytes += skb->len;
993 netif_rx(skb);
994 }
995}
996
997static inline void wl3501_get_confirm_interrupt(struct wl3501_card *this,
998 u16 addr, void *sig, int size)
999{
1000 pr_debug("entry");
1001 wl3501_get_from_wla(this, addr, &this->sig_get_confirm,
1002 sizeof(this->sig_get_confirm));
1003 wake_up(&this->wait);
1004}
1005
1006static inline void wl3501_start_confirm_interrupt(struct net_device *dev,
1007 struct wl3501_card *this,
1008 u16 addr)
1009{
1010 struct wl3501_start_confirm sig;
1011
1012 pr_debug("entry");
1013 wl3501_get_from_wla(this, addr, &sig, sizeof(sig));
1014 if (sig.status == WL3501_STATUS_SUCCESS)
1015 netif_wake_queue(dev);
1016}
1017
1018static inline void wl3501_assoc_confirm_interrupt(struct net_device *dev,
1019 u16 addr)
1020{
1021 struct wl3501_card *this = netdev_priv(dev);
1022 struct wl3501_assoc_confirm sig;
1023
1024 pr_debug("entry");
1025 wl3501_get_from_wla(this, addr, &sig, sizeof(sig));
1026
1027 if (sig.status == WL3501_STATUS_SUCCESS)
1028 wl3501_online(dev);
1029}
1030
1031static inline void wl3501_auth_confirm_interrupt(struct wl3501_card *this,
1032 u16 addr)
1033{
1034 struct wl3501_auth_confirm sig;
1035
1036 pr_debug("entry");
1037 wl3501_get_from_wla(this, addr, &sig, sizeof(sig));
1038
1039 if (sig.status == WL3501_STATUS_SUCCESS)
1040 wl3501_mgmt_association(this);
1041 else
1042 wl3501_mgmt_resync(this);
1043}
1044
1045static inline void wl3501_rx_interrupt(struct net_device *dev)
1046{
1047 int morepkts;
1048 u16 addr;
1049 u8 sig_id;
1050 struct wl3501_card *this = netdev_priv(dev);
1051
1052 pr_debug("entry");
1053loop:
1054 morepkts = 0;
1055 if (!wl3501_esbq_confirm(this))
1056 goto free;
1057 wl3501_get_from_wla(this, this->esbq_confirm, &addr, sizeof(addr));
1058 wl3501_get_from_wla(this, addr + 2, &sig_id, sizeof(sig_id));
1059
1060 switch (sig_id) {
1061 case WL3501_SIG_DEAUTH_IND:
1062 case WL3501_SIG_DISASSOC_IND:
1063 case WL3501_SIG_ALARM:
1064 wl3501_alarm_interrupt(dev, this);
1065 break;
1066 case WL3501_SIG_MD_CONFIRM:
1067 wl3501_md_confirm_interrupt(dev, this, addr);
1068 break;
1069 case WL3501_SIG_MD_IND:
1070 wl3501_md_ind_interrupt(dev, this, addr);
1071 break;
1072 case WL3501_SIG_GET_CONFIRM:
1073 wl3501_get_confirm_interrupt(this, addr,
1074 &this->sig_get_confirm,
1075 sizeof(this->sig_get_confirm));
1076 break;
1077 case WL3501_SIG_PWR_MGMT_CONFIRM:
1078 wl3501_get_confirm_interrupt(this, addr,
1079 &this->sig_pwr_mgmt_confirm,
1080 sizeof(this->sig_pwr_mgmt_confirm));
1081 break;
1082 case WL3501_SIG_START_CONFIRM:
1083 wl3501_start_confirm_interrupt(dev, this, addr);
1084 break;
1085 case WL3501_SIG_SCAN_CONFIRM:
1086 wl3501_mgmt_scan_confirm(this, addr);
1087 break;
1088 case WL3501_SIG_JOIN_CONFIRM:
1089 wl3501_mgmt_join_confirm(dev, addr);
1090 break;
1091 case WL3501_SIG_ASSOC_CONFIRM:
1092 wl3501_assoc_confirm_interrupt(dev, addr);
1093 break;
1094 case WL3501_SIG_AUTH_CONFIRM:
1095 wl3501_auth_confirm_interrupt(this, addr);
1096 break;
1097 case WL3501_SIG_RESYNC_CONFIRM:
1098 wl3501_mgmt_resync(this); /* FIXME: should be resync_confirm */
1099 break;
1100 }
1101 wl3501_esbq_confirm_done(this);
1102 morepkts = 1;
1103 /* free request if necessary */
1104free:
1105 wl3501_esbq_req_free(this);
1106 if (morepkts)
1107 goto loop;
1108}
1109
1110static inline void wl3501_ack_interrupt(struct wl3501_card *this)
1111{
1112 wl3501_outb(WL3501_GCR_ECINT, this->base_addr + WL3501_NIC_GCR);
1113}
1114
1115/**
1116 * wl3501_interrupt - Hardware interrupt from card.
1117 * @irq: Interrupt number
1118 * @dev_id: net_device
1119 *
1120 * We must acknowledge the interrupt as soon as possible, and block the
1121 * interrupt from the same card immediately to prevent re-entry.
1122 *
1123 * Before accessing the Control_Status_Block, we must lock SUTRO first.
1124 * On the other hand, to prevent SUTRO from malfunctioning, we must
1125 * unlock the SUTRO as soon as possible.
1126 */
1127static irqreturn_t wl3501_interrupt(int irq, void *dev_id)
1128{
1129 struct net_device *dev = dev_id;
1130 struct wl3501_card *this;
1131
1132 this = netdev_priv(dev);
1133 spin_lock(&this->lock);
1134 wl3501_ack_interrupt(this);
1135 wl3501_block_interrupt(this);
1136 wl3501_rx_interrupt(dev);
1137 wl3501_unblock_interrupt(this);
1138 spin_unlock(&this->lock);
1139
1140 return IRQ_HANDLED;
1141}
1142
1143static int wl3501_reset_board(struct wl3501_card *this)
1144{
1145 u8 tmp = 0;
1146 int i, rc = 0;
1147
1148 /* Coreset */
1149 wl3501_outb_p(WL3501_GCR_CORESET, this->base_addr + WL3501_NIC_GCR);
1150 wl3501_outb_p(0, this->base_addr + WL3501_NIC_GCR);
1151 wl3501_outb_p(WL3501_GCR_CORESET, this->base_addr + WL3501_NIC_GCR);
1152
1153 /* Reset SRAM 0x480 to zero */
1154 wl3501_set_to_wla(this, 0x480, &tmp, sizeof(tmp));
1155
1156 /* Start up */
1157 wl3501_outb_p(0, this->base_addr + WL3501_NIC_GCR);
1158
1159 WL3501_NOPLOOP(1024 * 50);
1160
1161 wl3501_unblock_interrupt(this); /* acme: was commented */
1162
1163 /* Polling Self_Test_Status */
1164 for (i = 0; i < 10000; i++) {
1165 wl3501_get_from_wla(this, 0x480, &tmp, sizeof(tmp));
1166
1167 if (tmp == 'W') {
1168 /* firmware complete all test successfully */
1169 tmp = 'A';
1170 wl3501_set_to_wla(this, 0x480, &tmp, sizeof(tmp));
1171 goto out;
1172 }
1173 WL3501_NOPLOOP(10);
1174 }
1175 printk(KERN_WARNING "%s: failed to reset the board!\n", __func__);
1176 rc = -ENODEV;
1177out:
1178 return rc;
1179}
1180
1181static int wl3501_init_firmware(struct wl3501_card *this)
1182{
1183 u16 ptr, next;
1184 int rc = wl3501_reset_board(this);
1185
1186 if (rc)
1187 goto fail;
1188 this->card_name[0] = '\0';
1189 wl3501_get_from_wla(this, 0x1a00,
1190 this->card_name, sizeof(this->card_name));
1191 this->card_name[sizeof(this->card_name) - 1] = '\0';
1192 this->firmware_date[0] = '\0';
1193 wl3501_get_from_wla(this, 0x1a40,
1194 this->firmware_date, sizeof(this->firmware_date));
1195 this->firmware_date[sizeof(this->firmware_date) - 1] = '\0';
1196 /* Switch to SRAM Page 0 */
1197 wl3501_switch_page(this, WL3501_BSS_SPAGE0);
1198 /* Read parameter from card */
1199 wl3501_get_from_wla(this, 0x482, &this->esbq_req_start, 2);
1200 wl3501_get_from_wla(this, 0x486, &this->esbq_req_end, 2);
1201 wl3501_get_from_wla(this, 0x488, &this->esbq_confirm_start, 2);
1202 wl3501_get_from_wla(this, 0x48c, &this->esbq_confirm_end, 2);
1203 wl3501_get_from_wla(this, 0x48e, &this->tx_buffer_head, 2);
1204 wl3501_get_from_wla(this, 0x492, &this->tx_buffer_size, 2);
1205 this->esbq_req_tail = this->esbq_req_head = this->esbq_req_start;
1206 this->esbq_req_end += this->esbq_req_start;
1207 this->esbq_confirm = this->esbq_confirm_start;
1208 this->esbq_confirm_end += this->esbq_confirm_start;
1209 /* Initial Tx Buffer */
1210 this->tx_buffer_cnt = 1;
1211 ptr = this->tx_buffer_head;
1212 next = ptr + WL3501_BLKSZ;
1213 while ((next - this->tx_buffer_head) < this->tx_buffer_size) {
1214 this->tx_buffer_cnt++;
1215 wl3501_set_to_wla(this, ptr, &next, sizeof(next));
1216 ptr = next;
1217 next = ptr + WL3501_BLKSZ;
1218 }
1219 rc = 0;
1220 next = 0;
1221 wl3501_set_to_wla(this, ptr, &next, sizeof(next));
1222 this->tx_buffer_tail = ptr;
1223out:
1224 return rc;
1225fail:
1226 printk(KERN_WARNING "%s: failed!\n", __func__);
1227 goto out;
1228}
1229
1230static int wl3501_close(struct net_device *dev)
1231{
1232 struct wl3501_card *this = netdev_priv(dev);
1233 unsigned long flags;
1234 struct pcmcia_device *link;
1235 link = this->p_dev;
1236
1237 spin_lock_irqsave(&this->lock, flags);
1238 link->open--;
1239
1240 /* Stop wl3501_hard_start_xmit() from now on */
1241 netif_stop_queue(dev);
1242 wl3501_ack_interrupt(this);
1243
1244 /* Mask interrupts from the SUTRO */
1245 wl3501_block_interrupt(this);
1246
1247 printk(KERN_INFO "%s: WL3501 closed\n", dev->name);
1248 spin_unlock_irqrestore(&this->lock, flags);
1249 return 0;
1250}
1251
1252/**
1253 * wl3501_reset - Reset the SUTRO.
1254 * @dev: network device
1255 *
1256 * It is almost the same as wl3501_open(). In fact, we may just wl3501_close()
1257 * and wl3501_open() again, but I wouldn't like to free_irq() when the driver
1258 * is running. It seems to be dangerous.
1259 */
1260static int wl3501_reset(struct net_device *dev)
1261{
1262 struct wl3501_card *this = netdev_priv(dev);
1263 int rc = -ENODEV;
1264 unsigned long flags;
1265
1266 spin_lock_irqsave(&this->lock, flags);
1267 wl3501_block_interrupt(this);
1268
1269 if (wl3501_init_firmware(this)) {
1270 printk(KERN_WARNING "%s: Can't initialize Firmware!\n",
1271 dev->name);
1272 /* Free IRQ, and mark IRQ as unused */
1273 free_irq(dev->irq, dev);
1274 goto out;
1275 }
1276
1277 /*
1278 * Queue has to be started only when the Card is Started
1279 */
1280 netif_stop_queue(dev);
1281 this->adhoc_times = 0;
1282 wl3501_ack_interrupt(this);
1283 wl3501_unblock_interrupt(this);
1284 wl3501_mgmt_scan(this, 100);
1285 pr_debug("%s: device reset", dev->name);
1286 rc = 0;
1287out:
1288 spin_unlock_irqrestore(&this->lock, flags);
1289 return rc;
1290}
1291
1292static void wl3501_tx_timeout(struct net_device *dev, unsigned int txqueue)
1293{
1294 struct net_device_stats *stats = &dev->stats;
1295 int rc;
1296
1297 stats->tx_errors++;
1298 rc = wl3501_reset(dev);
1299 if (rc)
1300 printk(KERN_ERR "%s: Error %d resetting card on Tx timeout!\n",
1301 dev->name, rc);
1302 else {
1303 netif_trans_update(dev); /* prevent tx timeout */
1304 netif_wake_queue(dev);
1305 }
1306}
1307
1308/*
1309 * Return : 0 - OK
1310 * 1 - Could not transmit (dev_queue_xmit will queue it)
1311 * and try to sent it later
1312 */
1313static netdev_tx_t wl3501_hard_start_xmit(struct sk_buff *skb,
1314 struct net_device *dev)
1315{
1316 int enabled, rc;
1317 struct wl3501_card *this = netdev_priv(dev);
1318 unsigned long flags;
1319
1320 spin_lock_irqsave(&this->lock, flags);
1321 enabled = wl3501_block_interrupt(this);
1322 rc = wl3501_send_pkt(this, skb->data, skb->len);
1323 if (enabled)
1324 wl3501_unblock_interrupt(this);
1325 if (rc) {
1326 ++dev->stats.tx_dropped;
1327 netif_stop_queue(dev);
1328 } else {
1329 ++dev->stats.tx_packets;
1330 dev->stats.tx_bytes += skb->len;
1331 kfree_skb(skb);
1332
1333 if (this->tx_buffer_cnt < 2)
1334 netif_stop_queue(dev);
1335 }
1336 spin_unlock_irqrestore(&this->lock, flags);
1337 return NETDEV_TX_OK;
1338}
1339
1340static int wl3501_open(struct net_device *dev)
1341{
1342 int rc = -ENODEV;
1343 struct wl3501_card *this = netdev_priv(dev);
1344 unsigned long flags;
1345 struct pcmcia_device *link;
1346 link = this->p_dev;
1347
1348 spin_lock_irqsave(&this->lock, flags);
1349 if (!pcmcia_dev_present(link))
1350 goto out;
1351 netif_device_attach(dev);
1352 link->open++;
1353
1354 /* Initial WL3501 firmware */
1355 pr_debug("%s: Initialize WL3501 firmware...", dev->name);
1356 if (wl3501_init_firmware(this))
1357 goto fail;
1358 /* Initial device variables */
1359 this->adhoc_times = 0;
1360 /* Acknowledge Interrupt, for cleaning last state */
1361 wl3501_ack_interrupt(this);
1362
1363 /* Enable interrupt from card after all */
1364 wl3501_unblock_interrupt(this);
1365 wl3501_mgmt_scan(this, 100);
1366 rc = 0;
1367 pr_debug("%s: WL3501 opened", dev->name);
1368 printk(KERN_INFO "%s: Card Name: %s\n"
1369 "%s: Firmware Date: %s\n",
1370 dev->name, this->card_name,
1371 dev->name, this->firmware_date);
1372out:
1373 spin_unlock_irqrestore(&this->lock, flags);
1374 return rc;
1375fail:
1376 printk(KERN_WARNING "%s: Can't initialize firmware!\n", dev->name);
1377 goto out;
1378}
1379
1380static struct iw_statistics *wl3501_get_wireless_stats(struct net_device *dev)
1381{
1382 struct wl3501_card *this = netdev_priv(dev);
1383 struct iw_statistics *wstats = &this->wstats;
1384 u32 value; /* size checked: it is u32 */
1385
1386 memset(wstats, 0, sizeof(*wstats));
1387 wstats->status = netif_running(dev);
1388 if (!wl3501_get_mib_value(this, WL3501_MIB_ATTR_WEP_ICV_ERROR_COUNT,
1389 &value, sizeof(value)))
1390 wstats->discard.code += value;
1391 if (!wl3501_get_mib_value(this, WL3501_MIB_ATTR_WEP_UNDECRYPTABLE_COUNT,
1392 &value, sizeof(value)))
1393 wstats->discard.code += value;
1394 if (!wl3501_get_mib_value(this, WL3501_MIB_ATTR_WEP_EXCLUDED_COUNT,
1395 &value, sizeof(value)))
1396 wstats->discard.code += value;
1397 if (!wl3501_get_mib_value(this, WL3501_MIB_ATTR_RETRY_COUNT,
1398 &value, sizeof(value)))
1399 wstats->discard.retries = value;
1400 if (!wl3501_get_mib_value(this, WL3501_MIB_ATTR_FAILED_COUNT,
1401 &value, sizeof(value)))
1402 wstats->discard.misc += value;
1403 if (!wl3501_get_mib_value(this, WL3501_MIB_ATTR_RTS_FAILURE_COUNT,
1404 &value, sizeof(value)))
1405 wstats->discard.misc += value;
1406 if (!wl3501_get_mib_value(this, WL3501_MIB_ATTR_ACK_FAILURE_COUNT,
1407 &value, sizeof(value)))
1408 wstats->discard.misc += value;
1409 if (!wl3501_get_mib_value(this, WL3501_MIB_ATTR_FRAME_DUPLICATE_COUNT,
1410 &value, sizeof(value)))
1411 wstats->discard.misc += value;
1412 return wstats;
1413}
1414
1415/**
1416 * wl3501_detach - deletes a driver "instance"
1417 * @link: FILL_IN
1418 *
1419 * This deletes a driver "instance". The device is de-registered with Card
1420 * Services. If it has been released, all local data structures are freed.
1421 * Otherwise, the structures will be freed when the device is released.
1422 */
1423static void wl3501_detach(struct pcmcia_device *link)
1424{
1425 struct net_device *dev = link->priv;
1426
1427 /* If the device is currently configured and active, we won't actually
1428 * delete it yet. Instead, it is marked so that when the release()
1429 * function is called, that will trigger a proper detach(). */
1430
1431 while (link->open > 0)
1432 wl3501_close(dev);
1433
1434 netif_device_detach(dev);
1435 wl3501_release(link);
1436
1437 unregister_netdev(dev);
1438 free_netdev(dev);
1439}
1440
1441static int wl3501_get_name(struct net_device *dev, struct iw_request_info *info,
1442 union iwreq_data *wrqu, char *extra)
1443{
1444 strscpy(wrqu->name, "IEEE 802.11-DS", sizeof(wrqu->name));
1445 return 0;
1446}
1447
1448static 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
1462static 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
1473static 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
1489static 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
1498static 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
1509static 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
1529static 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;
1544out:
1545 return rc;
1546}
1547
1548static 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
1558static 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
1567static 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].req.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].req.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].req.ssid.essid);
1589 iwe.cmd = SIOCGIWMODE;
1590 iwe.u.mode = this->bss_set[i].req.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].req.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].req.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
1616static 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
1633static 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
1648static 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 strscpy(this->nick, extra, wrqu->data.length);
1656 return 0;
1657}
1658
1659static 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 strscpy(extra, this->nick, 32);
1665 wrqu->data.length = strlen(extra);
1666 return 0;
1667}
1668
1669static 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
1682static 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
1698static 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
1714static 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
1736static 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;
1756set_value:
1757 wrqu->retry.value = retry;
1758 wrqu->retry.disabled = 0;
1759out:
1760 return rc;
1761}
1762
1763static 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);
1796out:
1797 return rc;
1798}
1799
1800static 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;
1813out:
1814 return rc;
1815}
1816
1817static 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
1846static 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
1852static 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_set_mac_address = eth_mac_addr,
1858 .ndo_validate_addr = eth_validate_addr,
1859};
1860
1861static int wl3501_probe(struct pcmcia_device *p_dev)
1862{
1863 struct net_device *dev;
1864 struct wl3501_card *this;
1865
1866 /* The io structure describes IO port mapping */
1867 p_dev->resource[0]->end = 16;
1868 p_dev->resource[0]->flags = IO_DATA_PATH_WIDTH_8;
1869
1870 /* General socket configuration */
1871 p_dev->config_flags = CONF_ENABLE_IRQ;
1872 p_dev->config_index = 1;
1873
1874 dev = alloc_etherdev(sizeof(struct wl3501_card));
1875 if (!dev)
1876 goto out_link;
1877
1878
1879 dev->netdev_ops = &wl3501_netdev_ops;
1880 dev->watchdog_timeo = 5 * HZ;
1881
1882 this = netdev_priv(dev);
1883 this->wireless_data.spy_data = &this->spy_data;
1884 this->p_dev = p_dev;
1885 dev->wireless_data = &this->wireless_data;
1886 dev->wireless_handlers = &wl3501_handler_def;
1887 netif_stop_queue(dev);
1888 p_dev->priv = dev;
1889
1890 return wl3501_config(p_dev);
1891out_link:
1892 return -ENOMEM;
1893}
1894
1895static int wl3501_config(struct pcmcia_device *link)
1896{
1897 struct net_device *dev = link->priv;
1898 int i = 0, j, ret;
1899 struct wl3501_card *this;
1900
1901 /* Try allocating IO ports. This tries a few fixed addresses. If you
1902 * want, you can also read the card's config table to pick addresses --
1903 * see the serial driver for an example. */
1904 link->io_lines = 5;
1905
1906 for (j = 0x280; j < 0x400; j += 0x20) {
1907 /* The '^0x300' is so that we probe 0x300-0x3ff first, then
1908 * 0x200-0x2ff, and so on, because this seems safer */
1909 link->resource[0]->start = j;
1910 link->resource[1]->start = link->resource[0]->start + 0x10;
1911 i = pcmcia_request_io(link);
1912 if (i == 0)
1913 break;
1914 }
1915 if (i != 0)
1916 goto failed;
1917
1918 /* Now allocate an interrupt line. Note that this does not actually
1919 * assign a handler to the interrupt. */
1920
1921 ret = pcmcia_request_irq(link, wl3501_interrupt);
1922 if (ret)
1923 goto failed;
1924
1925 ret = pcmcia_enable_device(link);
1926 if (ret)
1927 goto failed;
1928
1929 dev->irq = link->irq;
1930 dev->base_addr = link->resource[0]->start;
1931 SET_NETDEV_DEV(dev, &link->dev);
1932 if (register_netdev(dev)) {
1933 printk(KERN_NOTICE "wl3501_cs: register_netdev() failed\n");
1934 goto failed;
1935 }
1936
1937 this = netdev_priv(dev);
1938
1939 this->base_addr = dev->base_addr;
1940
1941 if (!wl3501_get_flash_mac_addr(this)) {
1942 printk(KERN_WARNING "%s: Can't read MAC addr in flash ROM?\n",
1943 dev->name);
1944 unregister_netdev(dev);
1945 goto failed;
1946 }
1947
1948 eth_hw_addr_set(dev, this->mac_addr);
1949
1950 /* print probe information */
1951 printk(KERN_INFO "%s: wl3501 @ 0x%3.3x, IRQ %d, "
1952 "MAC addr in flash ROM:%pM\n",
1953 dev->name, this->base_addr, (int)dev->irq,
1954 dev->dev_addr);
1955 /*
1956 * Initialize card parameters - added by jss
1957 */
1958 this->net_type = IW_MODE_INFRA;
1959 this->bss_cnt = 0;
1960 this->join_sta_bss = 0;
1961 this->adhoc_times = 0;
1962 iw_set_mgmt_info_element(IW_MGMT_INFO_ELEMENT_SSID, &this->essid.el,
1963 "ANY", 3);
1964 this->card_name[0] = '\0';
1965 this->firmware_date[0] = '\0';
1966 this->rssi = 255;
1967 this->chan = iw_default_channel(this->reg_domain);
1968 strscpy(this->nick, "Planet WL3501", sizeof(this->nick));
1969 spin_lock_init(&this->lock);
1970 init_waitqueue_head(&this->wait);
1971 netif_start_queue(dev);
1972 return 0;
1973
1974failed:
1975 wl3501_release(link);
1976 return -ENODEV;
1977}
1978
1979static void wl3501_release(struct pcmcia_device *link)
1980{
1981 pcmcia_disable_device(link);
1982}
1983
1984static int wl3501_suspend(struct pcmcia_device *link)
1985{
1986 struct net_device *dev = link->priv;
1987
1988 wl3501_pwr_mgmt(netdev_priv(dev), WL3501_SUSPEND);
1989 if (link->open)
1990 netif_device_detach(dev);
1991
1992 return 0;
1993}
1994
1995static int wl3501_resume(struct pcmcia_device *link)
1996{
1997 struct net_device *dev = link->priv;
1998
1999 wl3501_pwr_mgmt(netdev_priv(dev), WL3501_RESUME);
2000 if (link->open) {
2001 wl3501_reset(dev);
2002 netif_device_attach(dev);
2003 }
2004
2005 return 0;
2006}
2007
2008
2009static const struct pcmcia_device_id wl3501_ids[] = {
2010 PCMCIA_DEVICE_MANF_CARD(0xd601, 0x0001),
2011 PCMCIA_DEVICE_NULL
2012};
2013MODULE_DEVICE_TABLE(pcmcia, wl3501_ids);
2014
2015static struct pcmcia_driver wl3501_driver = {
2016 .owner = THIS_MODULE,
2017 .name = "wl3501_cs",
2018 .probe = wl3501_probe,
2019 .remove = wl3501_detach,
2020 .id_table = wl3501_ids,
2021 .suspend = wl3501_suspend,
2022 .resume = wl3501_resume,
2023};
2024module_pcmcia_driver(wl3501_driver);
2025
2026MODULE_AUTHOR("Fox Chen <mhchen@golf.ccl.itri.org.tw>, "
2027 "Arnaldo Carvalho de Melo <acme@conectiva.com.br>,"
2028 "Gustavo Niemeyer <niemeyer@conectiva.com>");
2029MODULE_DESCRIPTION("Planet wl3501 wireless driver");
2030MODULE_LICENSE("GPL");