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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/init.h>
33#include <linux/interrupt.h>
34#include <linux/in.h>
35#include <linux/kernel.h>
36#include <linux/module.h>
37#include <linux/fcntl.h>
38#include <linux/if_arp.h>
39#include <linux/ioport.h>
40#include <linux/netdevice.h>
41#include <linux/etherdevice.h>
42#include <linux/skbuff.h>
43#include <linux/slab.h>
44#include <linux/string.h>
45#include <linux/wireless.h>
46#include <linux/ieee80211.h>
47
48#include <net/iw_handler.h>
49
50#include <pcmcia/cistpl.h>
51#include <pcmcia/cisreg.h>
52#include <pcmcia/ds.h>
53
54#include <asm/io.h>
55#include <asm/uaccess.h>
56
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_comain - 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_comain - 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 * @dest: Card addressing space
241 * @src: PC addressing space
242 * @size: Bytes to move
243 *
244 * Move 'size' bytes from PC to card. (Shouldn't be interrupted)
245 */
246static void wl3501_set_to_wla(struct wl3501_card *this, u16 dest, void *src,
247 int size)
248{
249 /* switch to SRAM Page 0 */
250 wl3501_switch_page(this, (dest & 0x8000) ? WL3501_BSS_SPAGE1 :
251 WL3501_BSS_SPAGE0);
252 /* set LMAL and LMAH */
253 wl3501_outb(dest & 0xff, this->base_addr + WL3501_NIC_LMAL);
254 wl3501_outb(((dest >> 8) & 0x7f), this->base_addr + WL3501_NIC_LMAH);
255
256 /* rep out to Port A */
257 wl3501_outsb(this->base_addr + WL3501_NIC_IODPA, src, size);
258}
259
260/**
261 * wl3501_get_from_wla - Move 'size' bytes from card to PC
262 * @src: Card addressing space
263 * @dest: PC addressing space
264 * @size: Bytes to move
265 *
266 * Move 'size' bytes from card to PC. (Shouldn't be interrupted)
267 */
268static void wl3501_get_from_wla(struct wl3501_card *this, u16 src, void *dest,
269 int size)
270{
271 /* switch to SRAM Page 0 */
272 wl3501_switch_page(this, (src & 0x8000) ? WL3501_BSS_SPAGE1 :
273 WL3501_BSS_SPAGE0);
274 /* set LMAL and LMAH */
275 wl3501_outb(src & 0xff, this->base_addr + WL3501_NIC_LMAL);
276 wl3501_outb((src >> 8) & 0x7f, this->base_addr + WL3501_NIC_LMAH);
277
278 /* rep get from Port A */
279 insb(this->base_addr + WL3501_NIC_IODPA, dest, size);
280}
281
282/*
283 * Get/Allocate a free Tx Data Buffer
284 *
285 * *--------------*-----------------*----------------------------------*
286 * | PLCP | MAC Header | DST SRC Data ... |
287 * | (24 bytes) | (30 bytes) | (6) (6) (Ethernet Row Data) |
288 * *--------------*-----------------*----------------------------------*
289 * \ \- IEEE 802.11 -/ \-------------- len --------------/
290 * \-struct wl3501_80211_tx_hdr--/ \-------- Ethernet Frame -------/
291 *
292 * Return = Position in Card
293 */
294static u16 wl3501_get_tx_buffer(struct wl3501_card *this, u16 len)
295{
296 u16 next, blk_cnt = 0, zero = 0;
297 u16 full_len = sizeof(struct wl3501_80211_tx_hdr) + len;
298 u16 ret = 0;
299
300 if (full_len > this->tx_buffer_cnt * 254)
301 goto out;
302 ret = this->tx_buffer_head;
303 while (full_len) {
304 if (full_len < 254)
305 full_len = 0;
306 else
307 full_len -= 254;
308 wl3501_get_from_wla(this, this->tx_buffer_head, &next,
309 sizeof(next));
310 if (!full_len)
311 wl3501_set_to_wla(this, this->tx_buffer_head, &zero,
312 sizeof(zero));
313 this->tx_buffer_head = next;
314 blk_cnt++;
315 /* if buffer is not enough */
316 if (!next && full_len) {
317 this->tx_buffer_head = ret;
318 ret = 0;
319 goto out;
320 }
321 }
322 this->tx_buffer_cnt -= blk_cnt;
323out:
324 return ret;
325}
326
327/*
328 * Free an allocated Tx Buffer. ptr must be correct position.
329 */
330static void wl3501_free_tx_buffer(struct wl3501_card *this, u16 ptr)
331{
332 /* check if all space is not free */
333 if (!this->tx_buffer_head)
334 this->tx_buffer_head = ptr;
335 else
336 wl3501_set_to_wla(this, this->tx_buffer_tail,
337 &ptr, sizeof(ptr));
338 while (ptr) {
339 u16 next;
340
341 this->tx_buffer_cnt++;
342 wl3501_get_from_wla(this, ptr, &next, sizeof(next));
343 this->tx_buffer_tail = ptr;
344 ptr = next;
345 }
346}
347
348static int wl3501_esbq_req_test(struct wl3501_card *this)
349{
350 u8 tmp = 0;
351
352 wl3501_get_from_wla(this, this->esbq_req_head + 3, &tmp, sizeof(tmp));
353 return tmp & 0x80;
354}
355
356static void wl3501_esbq_req(struct wl3501_card *this, u16 *ptr)
357{
358 u16 tmp = 0;
359
360 wl3501_set_to_wla(this, this->esbq_req_head, ptr, 2);
361 wl3501_set_to_wla(this, this->esbq_req_head + 2, &tmp, sizeof(tmp));
362 this->esbq_req_head += 4;
363 if (this->esbq_req_head >= this->esbq_req_end)
364 this->esbq_req_head = this->esbq_req_start;
365}
366
367static int wl3501_esbq_exec(struct wl3501_card *this, void *sig, int sig_size)
368{
369 int rc = -EIO;
370
371 if (wl3501_esbq_req_test(this)) {
372 u16 ptr = wl3501_get_tx_buffer(this, sig_size);
373 if (ptr) {
374 wl3501_set_to_wla(this, ptr, sig, sig_size);
375 wl3501_esbq_req(this, &ptr);
376 rc = 0;
377 }
378 }
379 return rc;
380}
381
382static int wl3501_get_mib_value(struct wl3501_card *this, u8 index,
383 void *bf, int size)
384{
385 struct wl3501_get_req sig = {
386 .sig_id = WL3501_SIG_GET_REQ,
387 .mib_attrib = index,
388 };
389 unsigned long flags;
390 int rc = -EIO;
391
392 spin_lock_irqsave(&this->lock, flags);
393 if (wl3501_esbq_req_test(this)) {
394 u16 ptr = wl3501_get_tx_buffer(this, sizeof(sig));
395 if (ptr) {
396 wl3501_set_to_wla(this, ptr, &sig, sizeof(sig));
397 wl3501_esbq_req(this, &ptr);
398 this->sig_get_confirm.mib_status = 255;
399 spin_unlock_irqrestore(&this->lock, flags);
400 rc = wait_event_interruptible(this->wait,
401 this->sig_get_confirm.mib_status != 255);
402 if (!rc)
403 memcpy(bf, this->sig_get_confirm.mib_value,
404 size);
405 goto out;
406 }
407 }
408 spin_unlock_irqrestore(&this->lock, flags);
409out:
410 return rc;
411}
412
413static int wl3501_pwr_mgmt(struct wl3501_card *this, int suspend)
414{
415 struct wl3501_pwr_mgmt_req sig = {
416 .sig_id = WL3501_SIG_PWR_MGMT_REQ,
417 .pwr_save = suspend,
418 .wake_up = !suspend,
419 .receive_dtims = 10,
420 };
421 unsigned long flags;
422 int rc = -EIO;
423
424 spin_lock_irqsave(&this->lock, flags);
425 if (wl3501_esbq_req_test(this)) {
426 u16 ptr = wl3501_get_tx_buffer(this, sizeof(sig));
427 if (ptr) {
428 wl3501_set_to_wla(this, ptr, &sig, sizeof(sig));
429 wl3501_esbq_req(this, &ptr);
430 this->sig_pwr_mgmt_confirm.status = 255;
431 spin_unlock_irqrestore(&this->lock, flags);
432 rc = wait_event_interruptible(this->wait,
433 this->sig_pwr_mgmt_confirm.status != 255);
434 printk(KERN_INFO "%s: %s status=%d\n", __func__,
435 suspend ? "suspend" : "resume",
436 this->sig_pwr_mgmt_confirm.status);
437 goto out;
438 }
439 }
440 spin_unlock_irqrestore(&this->lock, flags);
441out:
442 return rc;
443}
444
445/**
446 * wl3501_send_pkt - Send a packet.
447 * @this - card
448 *
449 * Send a packet.
450 *
451 * data = Ethernet raw frame. (e.g. data[0] - data[5] is Dest MAC Addr,
452 * data[6] - data[11] is Src MAC Addr)
453 * Ref: IEEE 802.11
454 */
455static int wl3501_send_pkt(struct wl3501_card *this, u8 *data, u16 len)
456{
457 u16 bf, sig_bf, next, tmplen, pktlen;
458 struct wl3501_md_req sig = {
459 .sig_id = WL3501_SIG_MD_REQ,
460 };
461 u8 *pdata = (char *)data;
462 int rc = -EIO;
463
464 if (wl3501_esbq_req_test(this)) {
465 sig_bf = wl3501_get_tx_buffer(this, sizeof(sig));
466 rc = -ENOMEM;
467 if (!sig_bf) /* No free buffer available */
468 goto out;
469 bf = wl3501_get_tx_buffer(this, len + 26 + 24);
470 if (!bf) {
471 /* No free buffer available */
472 wl3501_free_tx_buffer(this, sig_bf);
473 goto out;
474 }
475 rc = 0;
476 memcpy(&sig.daddr[0], pdata, 12);
477 pktlen = len - 12;
478 pdata += 12;
479 sig.data = bf;
480 if (((*pdata) * 256 + (*(pdata + 1))) > 1500) {
481 u8 addr4[ETH_ALEN] = {
482 [0] = 0xAA, [1] = 0xAA, [2] = 0x03, [4] = 0x00,
483 };
484
485 wl3501_set_to_wla(this, bf + 2 +
486 offsetof(struct wl3501_tx_hdr, addr4),
487 addr4, sizeof(addr4));
488 sig.size = pktlen + 24 + 4 + 6;
489 if (pktlen > (254 - sizeof(struct wl3501_tx_hdr))) {
490 tmplen = 254 - sizeof(struct wl3501_tx_hdr);
491 pktlen -= tmplen;
492 } else {
493 tmplen = pktlen;
494 pktlen = 0;
495 }
496 wl3501_set_to_wla(this,
497 bf + 2 + sizeof(struct wl3501_tx_hdr),
498 pdata, tmplen);
499 pdata += tmplen;
500 wl3501_get_from_wla(this, bf, &next, sizeof(next));
501 bf = next;
502 } else {
503 sig.size = pktlen + 24 + 4 - 2;
504 pdata += 2;
505 pktlen -= 2;
506 if (pktlen > (254 - sizeof(struct wl3501_tx_hdr) + 6)) {
507 tmplen = 254 - sizeof(struct wl3501_tx_hdr) + 6;
508 pktlen -= tmplen;
509 } else {
510 tmplen = pktlen;
511 pktlen = 0;
512 }
513 wl3501_set_to_wla(this, bf + 2 +
514 offsetof(struct wl3501_tx_hdr, addr4),
515 pdata, tmplen);
516 pdata += tmplen;
517 wl3501_get_from_wla(this, bf, &next, sizeof(next));
518 bf = next;
519 }
520 while (pktlen > 0) {
521 if (pktlen > 254) {
522 tmplen = 254;
523 pktlen -= 254;
524 } else {
525 tmplen = pktlen;
526 pktlen = 0;
527 }
528 wl3501_set_to_wla(this, bf + 2, pdata, tmplen);
529 pdata += tmplen;
530 wl3501_get_from_wla(this, bf, &next, sizeof(next));
531 bf = next;
532 }
533 wl3501_set_to_wla(this, sig_bf, &sig, sizeof(sig));
534 wl3501_esbq_req(this, &sig_bf);
535 }
536out:
537 return rc;
538}
539
540static int wl3501_mgmt_resync(struct wl3501_card *this)
541{
542 struct wl3501_resync_req sig = {
543 .sig_id = WL3501_SIG_RESYNC_REQ,
544 };
545
546 return wl3501_esbq_exec(this, &sig, sizeof(sig));
547}
548
549static inline int wl3501_fw_bss_type(struct wl3501_card *this)
550{
551 return this->net_type == IW_MODE_INFRA ? WL3501_NET_TYPE_INFRA :
552 WL3501_NET_TYPE_ADHOC;
553}
554
555static inline int wl3501_fw_cap_info(struct wl3501_card *this)
556{
557 return this->net_type == IW_MODE_INFRA ? WL3501_MGMT_CAPABILITY_ESS :
558 WL3501_MGMT_CAPABILITY_IBSS;
559}
560
561static int wl3501_mgmt_scan(struct wl3501_card *this, u16 chan_time)
562{
563 struct wl3501_scan_req sig = {
564 .sig_id = WL3501_SIG_SCAN_REQ,
565 .scan_type = WL3501_SCAN_TYPE_ACTIVE,
566 .probe_delay = 0x10,
567 .min_chan_time = chan_time,
568 .max_chan_time = chan_time,
569 .bss_type = wl3501_fw_bss_type(this),
570 };
571
572 this->bss_cnt = this->join_sta_bss = 0;
573 return wl3501_esbq_exec(this, &sig, sizeof(sig));
574}
575
576static int wl3501_mgmt_join(struct wl3501_card *this, u16 stas)
577{
578 struct wl3501_join_req sig = {
579 .sig_id = WL3501_SIG_JOIN_REQ,
580 .timeout = 10,
581 .ds_pset = {
582 .el = {
583 .id = IW_MGMT_INFO_ELEMENT_DS_PARAMETER_SET,
584 .len = 1,
585 },
586 .chan = this->chan,
587 },
588 };
589
590 memcpy(&sig.beacon_period, &this->bss_set[stas].beacon_period, 72);
591 return wl3501_esbq_exec(this, &sig, sizeof(sig));
592}
593
594static int wl3501_mgmt_start(struct wl3501_card *this)
595{
596 struct wl3501_start_req sig = {
597 .sig_id = WL3501_SIG_START_REQ,
598 .beacon_period = 400,
599 .dtim_period = 1,
600 .ds_pset = {
601 .el = {
602 .id = IW_MGMT_INFO_ELEMENT_DS_PARAMETER_SET,
603 .len = 1,
604 },
605 .chan = this->chan,
606 },
607 .bss_basic_rset = {
608 .el = {
609 .id = IW_MGMT_INFO_ELEMENT_SUPPORTED_RATES,
610 .len = 2,
611 },
612 .data_rate_labels = {
613 [0] = IW_MGMT_RATE_LABEL_MANDATORY |
614 IW_MGMT_RATE_LABEL_1MBIT,
615 [1] = IW_MGMT_RATE_LABEL_MANDATORY |
616 IW_MGMT_RATE_LABEL_2MBIT,
617 },
618 },
619 .operational_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 .ibss_pset = {
632 .el = {
633 .id = IW_MGMT_INFO_ELEMENT_IBSS_PARAMETER_SET,
634 .len = 2,
635 },
636 .atim_window = 10,
637 },
638 .bss_type = wl3501_fw_bss_type(this),
639 .cap_info = wl3501_fw_cap_info(this),
640 };
641
642 iw_copy_mgmt_info_element(&sig.ssid.el, &this->essid.el);
643 iw_copy_mgmt_info_element(&this->keep_essid.el, &this->essid.el);
644 return wl3501_esbq_exec(this, &sig, sizeof(sig));
645}
646
647static void wl3501_mgmt_scan_confirm(struct wl3501_card *this, u16 addr)
648{
649 u16 i = 0;
650 int matchflag = 0;
651 struct wl3501_scan_confirm sig;
652
653 pr_debug("entry");
654 wl3501_get_from_wla(this, addr, &sig, sizeof(sig));
655 if (sig.status == WL3501_STATUS_SUCCESS) {
656 pr_debug("success");
657 if ((this->net_type == IW_MODE_INFRA &&
658 (sig.cap_info & WL3501_MGMT_CAPABILITY_ESS)) ||
659 (this->net_type == IW_MODE_ADHOC &&
660 (sig.cap_info & WL3501_MGMT_CAPABILITY_IBSS)) ||
661 this->net_type == IW_MODE_AUTO) {
662 if (!this->essid.el.len)
663 matchflag = 1;
664 else if (this->essid.el.len == 3 &&
665 !memcmp(this->essid.essid, "ANY", 3))
666 matchflag = 1;
667 else if (this->essid.el.len != sig.ssid.el.len)
668 matchflag = 0;
669 else if (memcmp(this->essid.essid, sig.ssid.essid,
670 this->essid.el.len))
671 matchflag = 0;
672 else
673 matchflag = 1;
674 if (matchflag) {
675 for (i = 0; i < this->bss_cnt; i++) {
676 if (!memcmp(this->bss_set[i].bssid,
677 sig.bssid, ETH_ALEN)) {
678 matchflag = 0;
679 break;
680 }
681 }
682 }
683 if (matchflag && (i < 20)) {
684 memcpy(&this->bss_set[i].beacon_period,
685 &sig.beacon_period, 73);
686 this->bss_cnt++;
687 this->rssi = sig.rssi;
688 }
689 }
690 } else if (sig.status == WL3501_STATUS_TIMEOUT) {
691 pr_debug("timeout");
692 this->join_sta_bss = 0;
693 for (i = this->join_sta_bss; i < this->bss_cnt; i++)
694 if (!wl3501_mgmt_join(this, i))
695 break;
696 this->join_sta_bss = i;
697 if (this->join_sta_bss == this->bss_cnt) {
698 if (this->net_type == IW_MODE_INFRA)
699 wl3501_mgmt_scan(this, 100);
700 else {
701 this->adhoc_times++;
702 if (this->adhoc_times > WL3501_MAX_ADHOC_TRIES)
703 wl3501_mgmt_start(this);
704 else
705 wl3501_mgmt_scan(this, 100);
706 }
707 }
708 }
709}
710
711/**
712 * wl3501_block_interrupt - Mask interrupt from SUTRO
713 * @this - card
714 *
715 * Mask interrupt from SUTRO. (i.e. SUTRO cannot interrupt the HOST)
716 * Return: 1 if interrupt is originally enabled
717 */
718static int wl3501_block_interrupt(struct wl3501_card *this)
719{
720 u8 old = inb(this->base_addr + WL3501_NIC_GCR);
721 u8 new = old & (~(WL3501_GCR_ECINT | WL3501_GCR_INT2EC |
722 WL3501_GCR_ENECINT));
723
724 wl3501_outb(new, this->base_addr + WL3501_NIC_GCR);
725 return old & WL3501_GCR_ENECINT;
726}
727
728/**
729 * wl3501_unblock_interrupt - Enable interrupt from SUTRO
730 * @this - card
731 *
732 * Enable interrupt from SUTRO. (i.e. SUTRO can interrupt the HOST)
733 * Return: 1 if interrupt is originally enabled
734 */
735static int wl3501_unblock_interrupt(struct wl3501_card *this)
736{
737 u8 old = inb(this->base_addr + WL3501_NIC_GCR);
738 u8 new = (old & ~(WL3501_GCR_ECINT | WL3501_GCR_INT2EC)) |
739 WL3501_GCR_ENECINT;
740
741 wl3501_outb(new, this->base_addr + WL3501_NIC_GCR);
742 return old & WL3501_GCR_ENECINT;
743}
744
745/**
746 * wl3501_receive - Receive data from Receive Queue.
747 *
748 * Receive data from Receive Queue.
749 *
750 * @this: card
751 * @bf: address of host
752 * @size: size of buffer.
753 */
754static u16 wl3501_receive(struct wl3501_card *this, u8 *bf, u16 size)
755{
756 u16 next_addr, next_addr1;
757 u8 *data = bf + 12;
758
759 size -= 12;
760 wl3501_get_from_wla(this, this->start_seg + 2,
761 &next_addr, sizeof(next_addr));
762 if (size > WL3501_BLKSZ - sizeof(struct wl3501_rx_hdr)) {
763 wl3501_get_from_wla(this,
764 this->start_seg +
765 sizeof(struct wl3501_rx_hdr), data,
766 WL3501_BLKSZ -
767 sizeof(struct wl3501_rx_hdr));
768 size -= WL3501_BLKSZ - sizeof(struct wl3501_rx_hdr);
769 data += WL3501_BLKSZ - sizeof(struct wl3501_rx_hdr);
770 } else {
771 wl3501_get_from_wla(this,
772 this->start_seg +
773 sizeof(struct wl3501_rx_hdr),
774 data, size);
775 size = 0;
776 }
777 while (size > 0) {
778 if (size > WL3501_BLKSZ - 5) {
779 wl3501_get_from_wla(this, next_addr + 5, data,
780 WL3501_BLKSZ - 5);
781 size -= WL3501_BLKSZ - 5;
782 data += WL3501_BLKSZ - 5;
783 wl3501_get_from_wla(this, next_addr + 2, &next_addr1,
784 sizeof(next_addr1));
785 next_addr = next_addr1;
786 } else {
787 wl3501_get_from_wla(this, next_addr + 5, data, size);
788 size = 0;
789 }
790 }
791 return 0;
792}
793
794static void wl3501_esbq_req_free(struct wl3501_card *this)
795{
796 u8 tmp;
797 u16 addr;
798
799 if (this->esbq_req_head == this->esbq_req_tail)
800 goto out;
801 wl3501_get_from_wla(this, this->esbq_req_tail + 3, &tmp, sizeof(tmp));
802 if (!(tmp & 0x80))
803 goto out;
804 wl3501_get_from_wla(this, this->esbq_req_tail, &addr, sizeof(addr));
805 wl3501_free_tx_buffer(this, addr);
806 this->esbq_req_tail += 4;
807 if (this->esbq_req_tail >= this->esbq_req_end)
808 this->esbq_req_tail = this->esbq_req_start;
809out:
810 return;
811}
812
813static int wl3501_esbq_confirm(struct wl3501_card *this)
814{
815 u8 tmp;
816
817 wl3501_get_from_wla(this, this->esbq_confirm + 3, &tmp, sizeof(tmp));
818 return tmp & 0x80;
819}
820
821static void wl3501_online(struct net_device *dev)
822{
823 struct wl3501_card *this = netdev_priv(dev);
824
825 printk(KERN_INFO "%s: Wireless LAN online. BSSID: %pM\n",
826 dev->name, this->bssid);
827 netif_wake_queue(dev);
828}
829
830static void wl3501_esbq_confirm_done(struct wl3501_card *this)
831{
832 u8 tmp = 0;
833
834 wl3501_set_to_wla(this, this->esbq_confirm + 3, &tmp, sizeof(tmp));
835 this->esbq_confirm += 4;
836 if (this->esbq_confirm >= this->esbq_confirm_end)
837 this->esbq_confirm = this->esbq_confirm_start;
838}
839
840static int wl3501_mgmt_auth(struct wl3501_card *this)
841{
842 struct wl3501_auth_req sig = {
843 .sig_id = WL3501_SIG_AUTH_REQ,
844 .type = WL3501_SYS_TYPE_OPEN,
845 .timeout = 1000,
846 };
847
848 pr_debug("entry");
849 memcpy(sig.mac_addr, this->bssid, ETH_ALEN);
850 return wl3501_esbq_exec(this, &sig, sizeof(sig));
851}
852
853static int wl3501_mgmt_association(struct wl3501_card *this)
854{
855 struct wl3501_assoc_req sig = {
856 .sig_id = WL3501_SIG_ASSOC_REQ,
857 .timeout = 1000,
858 .listen_interval = 5,
859 .cap_info = this->cap_info,
860 };
861
862 pr_debug("entry");
863 memcpy(sig.mac_addr, this->bssid, ETH_ALEN);
864 return wl3501_esbq_exec(this, &sig, sizeof(sig));
865}
866
867static void wl3501_mgmt_join_confirm(struct net_device *dev, u16 addr)
868{
869 struct wl3501_card *this = netdev_priv(dev);
870 struct wl3501_join_confirm sig;
871
872 pr_debug("entry");
873 wl3501_get_from_wla(this, addr, &sig, sizeof(sig));
874 if (sig.status == WL3501_STATUS_SUCCESS) {
875 if (this->net_type == IW_MODE_INFRA) {
876 if (this->join_sta_bss < this->bss_cnt) {
877 const int i = this->join_sta_bss;
878 memcpy(this->bssid,
879 this->bss_set[i].bssid, ETH_ALEN);
880 this->chan = this->bss_set[i].ds_pset.chan;
881 iw_copy_mgmt_info_element(&this->keep_essid.el,
882 &this->bss_set[i].ssid.el);
883 wl3501_mgmt_auth(this);
884 }
885 } else {
886 const int i = this->join_sta_bss;
887
888 memcpy(&this->bssid, &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_online(dev);
893 }
894 } else {
895 int i;
896 this->join_sta_bss++;
897 for (i = this->join_sta_bss; i < this->bss_cnt; i++)
898 if (!wl3501_mgmt_join(this, i))
899 break;
900 this->join_sta_bss = i;
901 if (this->join_sta_bss == this->bss_cnt) {
902 if (this->net_type == IW_MODE_INFRA)
903 wl3501_mgmt_scan(this, 100);
904 else {
905 this->adhoc_times++;
906 if (this->adhoc_times > WL3501_MAX_ADHOC_TRIES)
907 wl3501_mgmt_start(this);
908 else
909 wl3501_mgmt_scan(this, 100);
910 }
911 }
912 }
913}
914
915static inline void wl3501_alarm_interrupt(struct net_device *dev,
916 struct wl3501_card *this)
917{
918 if (this->net_type == IW_MODE_INFRA) {
919 printk(KERN_INFO "Wireless LAN offline\n");
920 netif_stop_queue(dev);
921 wl3501_mgmt_resync(this);
922 }
923}
924
925static inline void wl3501_md_confirm_interrupt(struct net_device *dev,
926 struct wl3501_card *this,
927 u16 addr)
928{
929 struct wl3501_md_confirm sig;
930
931 pr_debug("entry");
932 wl3501_get_from_wla(this, addr, &sig, sizeof(sig));
933 wl3501_free_tx_buffer(this, sig.data);
934 if (netif_queue_stopped(dev))
935 netif_wake_queue(dev);
936}
937
938static inline void wl3501_md_ind_interrupt(struct net_device *dev,
939 struct wl3501_card *this, u16 addr)
940{
941 struct wl3501_md_ind sig;
942 struct sk_buff *skb;
943 u8 rssi, addr4[ETH_ALEN];
944 u16 pkt_len;
945
946 wl3501_get_from_wla(this, addr, &sig, sizeof(sig));
947 this->start_seg = sig.data;
948 wl3501_get_from_wla(this,
949 sig.data + offsetof(struct wl3501_rx_hdr, rssi),
950 &rssi, sizeof(rssi));
951 this->rssi = rssi <= 63 ? (rssi * 100) / 64 : 255;
952
953 wl3501_get_from_wla(this,
954 sig.data +
955 offsetof(struct wl3501_rx_hdr, addr4),
956 &addr4, sizeof(addr4));
957 if (!(addr4[0] == 0xAA && addr4[1] == 0xAA &&
958 addr4[2] == 0x03 && addr4[4] == 0x00)) {
959 printk(KERN_INFO "Insupported packet type!\n");
960 return;
961 }
962 pkt_len = sig.size + 12 - 24 - 4 - 6;
963
964 skb = dev_alloc_skb(pkt_len + 5);
965
966 if (!skb) {
967 printk(KERN_WARNING "%s: Can't alloc a sk_buff of size %d.\n",
968 dev->name, pkt_len);
969 dev->stats.rx_dropped++;
970 } else {
971 skb->dev = dev;
972 skb_reserve(skb, 2); /* IP headers on 16 bytes boundaries */
973 skb_copy_to_linear_data(skb, (unsigned char *)&sig.daddr, 12);
974 wl3501_receive(this, skb->data, pkt_len);
975 skb_put(skb, pkt_len);
976 skb->protocol = eth_type_trans(skb, dev);
977 dev->stats.rx_packets++;
978 dev->stats.rx_bytes += skb->len;
979 netif_rx(skb);
980 }
981}
982
983static inline void wl3501_get_confirm_interrupt(struct wl3501_card *this,
984 u16 addr, void *sig, int size)
985{
986 pr_debug("entry");
987 wl3501_get_from_wla(this, addr, &this->sig_get_confirm,
988 sizeof(this->sig_get_confirm));
989 wake_up(&this->wait);
990}
991
992static inline void wl3501_start_confirm_interrupt(struct net_device *dev,
993 struct wl3501_card *this,
994 u16 addr)
995{
996 struct wl3501_start_confirm sig;
997
998 pr_debug("entry");
999 wl3501_get_from_wla(this, addr, &sig, sizeof(sig));
1000 if (sig.status == WL3501_STATUS_SUCCESS)
1001 netif_wake_queue(dev);
1002}
1003
1004static inline void wl3501_assoc_confirm_interrupt(struct net_device *dev,
1005 u16 addr)
1006{
1007 struct wl3501_card *this = netdev_priv(dev);
1008 struct wl3501_assoc_confirm sig;
1009
1010 pr_debug("entry");
1011 wl3501_get_from_wla(this, addr, &sig, sizeof(sig));
1012
1013 if (sig.status == WL3501_STATUS_SUCCESS)
1014 wl3501_online(dev);
1015}
1016
1017static inline void wl3501_auth_confirm_interrupt(struct wl3501_card *this,
1018 u16 addr)
1019{
1020 struct wl3501_auth_confirm sig;
1021
1022 pr_debug("entry");
1023 wl3501_get_from_wla(this, addr, &sig, sizeof(sig));
1024
1025 if (sig.status == WL3501_STATUS_SUCCESS)
1026 wl3501_mgmt_association(this);
1027 else
1028 wl3501_mgmt_resync(this);
1029}
1030
1031static inline void wl3501_rx_interrupt(struct net_device *dev)
1032{
1033 int morepkts;
1034 u16 addr;
1035 u8 sig_id;
1036 struct wl3501_card *this = netdev_priv(dev);
1037
1038 pr_debug("entry");
1039loop:
1040 morepkts = 0;
1041 if (!wl3501_esbq_confirm(this))
1042 goto free;
1043 wl3501_get_from_wla(this, this->esbq_confirm, &addr, sizeof(addr));
1044 wl3501_get_from_wla(this, addr + 2, &sig_id, sizeof(sig_id));
1045
1046 switch (sig_id) {
1047 case WL3501_SIG_DEAUTH_IND:
1048 case WL3501_SIG_DISASSOC_IND:
1049 case WL3501_SIG_ALARM:
1050 wl3501_alarm_interrupt(dev, this);
1051 break;
1052 case WL3501_SIG_MD_CONFIRM:
1053 wl3501_md_confirm_interrupt(dev, this, addr);
1054 break;
1055 case WL3501_SIG_MD_IND:
1056 wl3501_md_ind_interrupt(dev, this, addr);
1057 break;
1058 case WL3501_SIG_GET_CONFIRM:
1059 wl3501_get_confirm_interrupt(this, addr,
1060 &this->sig_get_confirm,
1061 sizeof(this->sig_get_confirm));
1062 break;
1063 case WL3501_SIG_PWR_MGMT_CONFIRM:
1064 wl3501_get_confirm_interrupt(this, addr,
1065 &this->sig_pwr_mgmt_confirm,
1066 sizeof(this->sig_pwr_mgmt_confirm));
1067 break;
1068 case WL3501_SIG_START_CONFIRM:
1069 wl3501_start_confirm_interrupt(dev, this, addr);
1070 break;
1071 case WL3501_SIG_SCAN_CONFIRM:
1072 wl3501_mgmt_scan_confirm(this, addr);
1073 break;
1074 case WL3501_SIG_JOIN_CONFIRM:
1075 wl3501_mgmt_join_confirm(dev, addr);
1076 break;
1077 case WL3501_SIG_ASSOC_CONFIRM:
1078 wl3501_assoc_confirm_interrupt(dev, addr);
1079 break;
1080 case WL3501_SIG_AUTH_CONFIRM:
1081 wl3501_auth_confirm_interrupt(this, addr);
1082 break;
1083 case WL3501_SIG_RESYNC_CONFIRM:
1084 wl3501_mgmt_resync(this); /* FIXME: should be resync_confirm */
1085 break;
1086 }
1087 wl3501_esbq_confirm_done(this);
1088 morepkts = 1;
1089 /* free request if necessary */
1090free:
1091 wl3501_esbq_req_free(this);
1092 if (morepkts)
1093 goto loop;
1094}
1095
1096static inline void wl3501_ack_interrupt(struct wl3501_card *this)
1097{
1098 wl3501_outb(WL3501_GCR_ECINT, this->base_addr + WL3501_NIC_GCR);
1099}
1100
1101/**
1102 * wl3501_interrupt - Hardware interrupt from card.
1103 * @irq - Interrupt number
1104 * @dev_id - net_device
1105 *
1106 * We must acknowledge the interrupt as soon as possible, and block the
1107 * interrupt from the same card immediately to prevent re-entry.
1108 *
1109 * Before accessing the Control_Status_Block, we must lock SUTRO first.
1110 * On the other hand, to prevent SUTRO from malfunctioning, we must
1111 * unlock the SUTRO as soon as possible.
1112 */
1113static irqreturn_t wl3501_interrupt(int irq, void *dev_id)
1114{
1115 struct net_device *dev = dev_id;
1116 struct wl3501_card *this;
1117
1118 this = netdev_priv(dev);
1119 spin_lock(&this->lock);
1120 wl3501_ack_interrupt(this);
1121 wl3501_block_interrupt(this);
1122 wl3501_rx_interrupt(dev);
1123 wl3501_unblock_interrupt(this);
1124 spin_unlock(&this->lock);
1125
1126 return IRQ_HANDLED;
1127}
1128
1129static int wl3501_reset_board(struct wl3501_card *this)
1130{
1131 u8 tmp = 0;
1132 int i, rc = 0;
1133
1134 /* Coreset */
1135 wl3501_outb_p(WL3501_GCR_CORESET, this->base_addr + WL3501_NIC_GCR);
1136 wl3501_outb_p(0, this->base_addr + WL3501_NIC_GCR);
1137 wl3501_outb_p(WL3501_GCR_CORESET, this->base_addr + WL3501_NIC_GCR);
1138
1139 /* Reset SRAM 0x480 to zero */
1140 wl3501_set_to_wla(this, 0x480, &tmp, sizeof(tmp));
1141
1142 /* Start up */
1143 wl3501_outb_p(0, this->base_addr + WL3501_NIC_GCR);
1144
1145 WL3501_NOPLOOP(1024 * 50);
1146
1147 wl3501_unblock_interrupt(this); /* acme: was commented */
1148
1149 /* Polling Self_Test_Status */
1150 for (i = 0; i < 10000; i++) {
1151 wl3501_get_from_wla(this, 0x480, &tmp, sizeof(tmp));
1152
1153 if (tmp == 'W') {
1154 /* firmware complete all test successfully */
1155 tmp = 'A';
1156 wl3501_set_to_wla(this, 0x480, &tmp, sizeof(tmp));
1157 goto out;
1158 }
1159 WL3501_NOPLOOP(10);
1160 }
1161 printk(KERN_WARNING "%s: failed to reset the board!\n", __func__);
1162 rc = -ENODEV;
1163out:
1164 return rc;
1165}
1166
1167static int wl3501_init_firmware(struct wl3501_card *this)
1168{
1169 u16 ptr, next;
1170 int rc = wl3501_reset_board(this);
1171
1172 if (rc)
1173 goto fail;
1174 this->card_name[0] = '\0';
1175 wl3501_get_from_wla(this, 0x1a00,
1176 this->card_name, sizeof(this->card_name));
1177 this->card_name[sizeof(this->card_name) - 1] = '\0';
1178 this->firmware_date[0] = '\0';
1179 wl3501_get_from_wla(this, 0x1a40,
1180 this->firmware_date, sizeof(this->firmware_date));
1181 this->firmware_date[sizeof(this->firmware_date) - 1] = '\0';
1182 /* Switch to SRAM Page 0 */
1183 wl3501_switch_page(this, WL3501_BSS_SPAGE0);
1184 /* Read parameter from card */
1185 wl3501_get_from_wla(this, 0x482, &this->esbq_req_start, 2);
1186 wl3501_get_from_wla(this, 0x486, &this->esbq_req_end, 2);
1187 wl3501_get_from_wla(this, 0x488, &this->esbq_confirm_start, 2);
1188 wl3501_get_from_wla(this, 0x48c, &this->esbq_confirm_end, 2);
1189 wl3501_get_from_wla(this, 0x48e, &this->tx_buffer_head, 2);
1190 wl3501_get_from_wla(this, 0x492, &this->tx_buffer_size, 2);
1191 this->esbq_req_tail = this->esbq_req_head = this->esbq_req_start;
1192 this->esbq_req_end += this->esbq_req_start;
1193 this->esbq_confirm = this->esbq_confirm_start;
1194 this->esbq_confirm_end += this->esbq_confirm_start;
1195 /* Initial Tx Buffer */
1196 this->tx_buffer_cnt = 1;
1197 ptr = this->tx_buffer_head;
1198 next = ptr + WL3501_BLKSZ;
1199 while ((next - this->tx_buffer_head) < this->tx_buffer_size) {
1200 this->tx_buffer_cnt++;
1201 wl3501_set_to_wla(this, ptr, &next, sizeof(next));
1202 ptr = next;
1203 next = ptr + WL3501_BLKSZ;
1204 }
1205 rc = 0;
1206 next = 0;
1207 wl3501_set_to_wla(this, ptr, &next, sizeof(next));
1208 this->tx_buffer_tail = ptr;
1209out:
1210 return rc;
1211fail:
1212 printk(KERN_WARNING "%s: failed!\n", __func__);
1213 goto out;
1214}
1215
1216static int wl3501_close(struct net_device *dev)
1217{
1218 struct wl3501_card *this = netdev_priv(dev);
1219 int rc = -ENODEV;
1220 unsigned long flags;
1221 struct pcmcia_device *link;
1222 link = this->p_dev;
1223
1224 spin_lock_irqsave(&this->lock, flags);
1225 link->open--;
1226
1227 /* Stop wl3501_hard_start_xmit() from now on */
1228 netif_stop_queue(dev);
1229 wl3501_ack_interrupt(this);
1230
1231 /* Mask interrupts from the SUTRO */
1232 wl3501_block_interrupt(this);
1233
1234 rc = 0;
1235 printk(KERN_INFO "%s: WL3501 closed\n", dev->name);
1236 spin_unlock_irqrestore(&this->lock, flags);
1237 return rc;
1238}
1239
1240/**
1241 * wl3501_reset - Reset the SUTRO.
1242 * @dev - network device
1243 *
1244 * It is almost the same as wl3501_open(). In fact, we may just wl3501_close()
1245 * and wl3501_open() again, but I wouldn't like to free_irq() when the driver
1246 * is running. It seems to be dangerous.
1247 */
1248static int wl3501_reset(struct net_device *dev)
1249{
1250 struct wl3501_card *this = netdev_priv(dev);
1251 int rc = -ENODEV;
1252
1253 wl3501_block_interrupt(this);
1254
1255 if (wl3501_init_firmware(this)) {
1256 printk(KERN_WARNING "%s: Can't initialize Firmware!\n",
1257 dev->name);
1258 /* Free IRQ, and mark IRQ as unused */
1259 free_irq(dev->irq, dev);
1260 goto out;
1261 }
1262
1263 /*
1264 * Queue has to be started only when the Card is Started
1265 */
1266 netif_stop_queue(dev);
1267 this->adhoc_times = 0;
1268 wl3501_ack_interrupt(this);
1269 wl3501_unblock_interrupt(this);
1270 wl3501_mgmt_scan(this, 100);
1271 pr_debug("%s: device reset", dev->name);
1272 rc = 0;
1273out:
1274 return rc;
1275}
1276
1277static void wl3501_tx_timeout(struct net_device *dev)
1278{
1279 struct wl3501_card *this = netdev_priv(dev);
1280 struct net_device_stats *stats = &dev->stats;
1281 unsigned long flags;
1282 int rc;
1283
1284 stats->tx_errors++;
1285 spin_lock_irqsave(&this->lock, flags);
1286 rc = wl3501_reset(dev);
1287 spin_unlock_irqrestore(&this->lock, flags);
1288 if (rc)
1289 printk(KERN_ERR "%s: Error %d resetting card on Tx timeout!\n",
1290 dev->name, rc);
1291 else {
1292 dev->trans_start = jiffies; /* prevent tx timeout */
1293 netif_wake_queue(dev);
1294 }
1295}
1296
1297/*
1298 * Return : 0 - OK
1299 * 1 - Could not transmit (dev_queue_xmit will queue it)
1300 * and try to sent it later
1301 */
1302static netdev_tx_t wl3501_hard_start_xmit(struct sk_buff *skb,
1303 struct net_device *dev)
1304{
1305 int enabled, rc;
1306 struct wl3501_card *this = netdev_priv(dev);
1307 unsigned long flags;
1308
1309 spin_lock_irqsave(&this->lock, flags);
1310 enabled = wl3501_block_interrupt(this);
1311 rc = wl3501_send_pkt(this, skb->data, skb->len);
1312 if (enabled)
1313 wl3501_unblock_interrupt(this);
1314 if (rc) {
1315 ++dev->stats.tx_dropped;
1316 netif_stop_queue(dev);
1317 } else {
1318 ++dev->stats.tx_packets;
1319 dev->stats.tx_bytes += skb->len;
1320 kfree_skb(skb);
1321
1322 if (this->tx_buffer_cnt < 2)
1323 netif_stop_queue(dev);
1324 }
1325 spin_unlock_irqrestore(&this->lock, flags);
1326 return NETDEV_TX_OK;
1327}
1328
1329static int wl3501_open(struct net_device *dev)
1330{
1331 int rc = -ENODEV;
1332 struct wl3501_card *this = netdev_priv(dev);
1333 unsigned long flags;
1334 struct pcmcia_device *link;
1335 link = this->p_dev;
1336
1337 spin_lock_irqsave(&this->lock, flags);
1338 if (!pcmcia_dev_present(link))
1339 goto out;
1340 netif_device_attach(dev);
1341 link->open++;
1342
1343 /* Initial WL3501 firmware */
1344 pr_debug("%s: Initialize WL3501 firmware...", dev->name);
1345 if (wl3501_init_firmware(this))
1346 goto fail;
1347 /* Initial device variables */
1348 this->adhoc_times = 0;
1349 /* Acknowledge Interrupt, for cleaning last state */
1350 wl3501_ack_interrupt(this);
1351
1352 /* Enable interrupt from card after all */
1353 wl3501_unblock_interrupt(this);
1354 wl3501_mgmt_scan(this, 100);
1355 rc = 0;
1356 pr_debug("%s: WL3501 opened", dev->name);
1357 printk(KERN_INFO "%s: Card Name: %s\n"
1358 "%s: Firmware Date: %s\n",
1359 dev->name, this->card_name,
1360 dev->name, this->firmware_date);
1361out:
1362 spin_unlock_irqrestore(&this->lock, flags);
1363 return rc;
1364fail:
1365 printk(KERN_WARNING "%s: Can't initialize firmware!\n", dev->name);
1366 goto out;
1367}
1368
1369static struct iw_statistics *wl3501_get_wireless_stats(struct net_device *dev)
1370{
1371 struct wl3501_card *this = netdev_priv(dev);
1372 struct iw_statistics *wstats = &this->wstats;
1373 u32 value; /* size checked: it is u32 */
1374
1375 memset(wstats, 0, sizeof(*wstats));
1376 wstats->status = netif_running(dev);
1377 if (!wl3501_get_mib_value(this, WL3501_MIB_ATTR_WEP_ICV_ERROR_COUNT,
1378 &value, sizeof(value)))
1379 wstats->discard.code += value;
1380 if (!wl3501_get_mib_value(this, WL3501_MIB_ATTR_WEP_UNDECRYPTABLE_COUNT,
1381 &value, sizeof(value)))
1382 wstats->discard.code += value;
1383 if (!wl3501_get_mib_value(this, WL3501_MIB_ATTR_WEP_EXCLUDED_COUNT,
1384 &value, sizeof(value)))
1385 wstats->discard.code += value;
1386 if (!wl3501_get_mib_value(this, WL3501_MIB_ATTR_RETRY_COUNT,
1387 &value, sizeof(value)))
1388 wstats->discard.retries = value;
1389 if (!wl3501_get_mib_value(this, WL3501_MIB_ATTR_FAILED_COUNT,
1390 &value, sizeof(value)))
1391 wstats->discard.misc += value;
1392 if (!wl3501_get_mib_value(this, WL3501_MIB_ATTR_RTS_FAILURE_COUNT,
1393 &value, sizeof(value)))
1394 wstats->discard.misc += value;
1395 if (!wl3501_get_mib_value(this, WL3501_MIB_ATTR_ACK_FAILURE_COUNT,
1396 &value, sizeof(value)))
1397 wstats->discard.misc += value;
1398 if (!wl3501_get_mib_value(this, WL3501_MIB_ATTR_FRAME_DUPLICATE_COUNT,
1399 &value, sizeof(value)))
1400 wstats->discard.misc += value;
1401 return wstats;
1402}
1403
1404/**
1405 * wl3501_detach - deletes a driver "instance"
1406 * @link - FILL_IN
1407 *
1408 * This deletes a driver "instance". The device is de-registered with Card
1409 * Services. If it has been released, all local data structures are freed.
1410 * Otherwise, the structures will be freed when the device is released.
1411 */
1412static void wl3501_detach(struct pcmcia_device *link)
1413{
1414 struct net_device *dev = link->priv;
1415
1416 /* If the device is currently configured and active, we won't actually
1417 * delete it yet. Instead, it is marked so that when the release()
1418 * function is called, that will trigger a proper detach(). */
1419
1420 while (link->open > 0)
1421 wl3501_close(dev);
1422
1423 netif_device_detach(dev);
1424 wl3501_release(link);
1425
1426 unregister_netdev(dev);
1427
1428 if (link->priv)
1429 free_netdev(link->priv);
1430}
1431
1432static int wl3501_get_name(struct net_device *dev, struct iw_request_info *info,
1433 union iwreq_data *wrqu, char *extra)
1434{
1435 strlcpy(wrqu->name, "IEEE 802.11-DS", sizeof(wrqu->name));
1436 return 0;
1437}
1438
1439static int wl3501_set_freq(struct net_device *dev, struct iw_request_info *info,
1440 union iwreq_data *wrqu, char *extra)
1441{
1442 struct wl3501_card *this = netdev_priv(dev);
1443 int channel = wrqu->freq.m;
1444 int rc = -EINVAL;
1445
1446 if (iw_valid_channel(this->reg_domain, channel)) {
1447 this->chan = channel;
1448 rc = wl3501_reset(dev);
1449 }
1450 return rc;
1451}
1452
1453static int wl3501_get_freq(struct net_device *dev, struct iw_request_info *info,
1454 union iwreq_data *wrqu, char *extra)
1455{
1456 struct wl3501_card *this = netdev_priv(dev);
1457
1458 wrqu->freq.m = ieee80211_dsss_chan_to_freq(this->chan) * 100000;
1459 wrqu->freq.e = 1;
1460 return 0;
1461}
1462
1463static int wl3501_set_mode(struct net_device *dev, struct iw_request_info *info,
1464 union iwreq_data *wrqu, char *extra)
1465{
1466 int rc = -EINVAL;
1467
1468 if (wrqu->mode == IW_MODE_INFRA ||
1469 wrqu->mode == IW_MODE_ADHOC ||
1470 wrqu->mode == IW_MODE_AUTO) {
1471 struct wl3501_card *this = netdev_priv(dev);
1472
1473 this->net_type = wrqu->mode;
1474 rc = wl3501_reset(dev);
1475 }
1476 return rc;
1477}
1478
1479static int wl3501_get_mode(struct net_device *dev, struct iw_request_info *info,
1480 union iwreq_data *wrqu, char *extra)
1481{
1482 struct wl3501_card *this = netdev_priv(dev);
1483
1484 wrqu->mode = this->net_type;
1485 return 0;
1486}
1487
1488static int wl3501_get_sens(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->sens.value = this->rssi;
1494 wrqu->sens.disabled = !wrqu->sens.value;
1495 wrqu->sens.fixed = 1;
1496 return 0;
1497}
1498
1499static int wl3501_get_range(struct net_device *dev,
1500 struct iw_request_info *info,
1501 union iwreq_data *wrqu, char *extra)
1502{
1503 struct iw_range *range = (struct iw_range *)extra;
1504
1505 /* Set the length (very important for backward compatibility) */
1506 wrqu->data.length = sizeof(*range);
1507
1508 /* Set all the info we don't care or don't know about to zero */
1509 memset(range, 0, sizeof(*range));
1510
1511 /* Set the Wireless Extension versions */
1512 range->we_version_compiled = WIRELESS_EXT;
1513 range->we_version_source = 1;
1514 range->throughput = 2 * 1000 * 1000; /* ~2 Mb/s */
1515 /* FIXME: study the code to fill in more fields... */
1516 return 0;
1517}
1518
1519static int wl3501_set_wap(struct net_device *dev, struct iw_request_info *info,
1520 union iwreq_data *wrqu, char *extra)
1521{
1522 struct wl3501_card *this = netdev_priv(dev);
1523 static const u8 bcast[ETH_ALEN] = { 255, 255, 255, 255, 255, 255 };
1524 int rc = -EINVAL;
1525
1526 /* FIXME: we support other ARPHRDs...*/
1527 if (wrqu->ap_addr.sa_family != ARPHRD_ETHER)
1528 goto out;
1529 if (!memcmp(bcast, wrqu->ap_addr.sa_data, ETH_ALEN)) {
1530 /* FIXME: rescan? */
1531 } else
1532 memcpy(this->bssid, wrqu->ap_addr.sa_data, ETH_ALEN);
1533 /* FIXME: rescan? deassoc & scan? */
1534 rc = 0;
1535out:
1536 return rc;
1537}
1538
1539static int wl3501_get_wap(struct net_device *dev, struct iw_request_info *info,
1540 union iwreq_data *wrqu, char *extra)
1541{
1542 struct wl3501_card *this = netdev_priv(dev);
1543
1544 wrqu->ap_addr.sa_family = ARPHRD_ETHER;
1545 memcpy(wrqu->ap_addr.sa_data, this->bssid, ETH_ALEN);
1546 return 0;
1547}
1548
1549static int wl3501_set_scan(struct net_device *dev, struct iw_request_info *info,
1550 union iwreq_data *wrqu, char *extra)
1551{
1552 /*
1553 * FIXME: trigger scanning with a reset, yes, I'm lazy
1554 */
1555 return wl3501_reset(dev);
1556}
1557
1558static int wl3501_get_scan(struct net_device *dev, struct iw_request_info *info,
1559 union iwreq_data *wrqu, char *extra)
1560{
1561 struct wl3501_card *this = netdev_priv(dev);
1562 int i;
1563 char *current_ev = extra;
1564 struct iw_event iwe;
1565
1566 for (i = 0; i < this->bss_cnt; ++i) {
1567 iwe.cmd = SIOCGIWAP;
1568 iwe.u.ap_addr.sa_family = ARPHRD_ETHER;
1569 memcpy(iwe.u.ap_addr.sa_data, this->bss_set[i].bssid, ETH_ALEN);
1570 current_ev = iwe_stream_add_event(info, current_ev,
1571 extra + IW_SCAN_MAX_DATA,
1572 &iwe, IW_EV_ADDR_LEN);
1573 iwe.cmd = SIOCGIWESSID;
1574 iwe.u.data.flags = 1;
1575 iwe.u.data.length = this->bss_set[i].ssid.el.len;
1576 current_ev = iwe_stream_add_point(info, current_ev,
1577 extra + IW_SCAN_MAX_DATA,
1578 &iwe,
1579 this->bss_set[i].ssid.essid);
1580 iwe.cmd = SIOCGIWMODE;
1581 iwe.u.mode = this->bss_set[i].bss_type;
1582 current_ev = iwe_stream_add_event(info, current_ev,
1583 extra + IW_SCAN_MAX_DATA,
1584 &iwe, IW_EV_UINT_LEN);
1585 iwe.cmd = SIOCGIWFREQ;
1586 iwe.u.freq.m = this->bss_set[i].ds_pset.chan;
1587 iwe.u.freq.e = 0;
1588 current_ev = iwe_stream_add_event(info, current_ev,
1589 extra + IW_SCAN_MAX_DATA,
1590 &iwe, IW_EV_FREQ_LEN);
1591 iwe.cmd = SIOCGIWENCODE;
1592 if (this->bss_set[i].cap_info & WL3501_MGMT_CAPABILITY_PRIVACY)
1593 iwe.u.data.flags = IW_ENCODE_ENABLED | IW_ENCODE_NOKEY;
1594 else
1595 iwe.u.data.flags = IW_ENCODE_DISABLED;
1596 iwe.u.data.length = 0;
1597 current_ev = iwe_stream_add_point(info, current_ev,
1598 extra + IW_SCAN_MAX_DATA,
1599 &iwe, NULL);
1600 }
1601 /* Length of data */
1602 wrqu->data.length = (current_ev - extra);
1603 wrqu->data.flags = 0; /* FIXME: set properly these flags */
1604 return 0;
1605}
1606
1607static int wl3501_set_essid(struct net_device *dev,
1608 struct iw_request_info *info,
1609 union iwreq_data *wrqu, char *extra)
1610{
1611 struct wl3501_card *this = netdev_priv(dev);
1612
1613 if (wrqu->data.flags) {
1614 iw_set_mgmt_info_element(IW_MGMT_INFO_ELEMENT_SSID,
1615 &this->essid.el,
1616 extra, wrqu->data.length);
1617 } else { /* We accept any ESSID */
1618 iw_set_mgmt_info_element(IW_MGMT_INFO_ELEMENT_SSID,
1619 &this->essid.el, "ANY", 3);
1620 }
1621 return wl3501_reset(dev);
1622}
1623
1624static int wl3501_get_essid(struct net_device *dev,
1625 struct iw_request_info *info,
1626 union iwreq_data *wrqu, char *extra)
1627{
1628 struct wl3501_card *this = netdev_priv(dev);
1629 unsigned long flags;
1630
1631 spin_lock_irqsave(&this->lock, flags);
1632 wrqu->essid.flags = 1;
1633 wrqu->essid.length = this->essid.el.len;
1634 memcpy(extra, this->essid.essid, this->essid.el.len);
1635 spin_unlock_irqrestore(&this->lock, flags);
1636 return 0;
1637}
1638
1639static int wl3501_set_nick(struct net_device *dev, struct iw_request_info *info,
1640 union iwreq_data *wrqu, char *extra)
1641{
1642 struct wl3501_card *this = netdev_priv(dev);
1643
1644 if (wrqu->data.length > sizeof(this->nick))
1645 return -E2BIG;
1646 strlcpy(this->nick, extra, wrqu->data.length);
1647 return 0;
1648}
1649
1650static int wl3501_get_nick(struct net_device *dev, struct iw_request_info *info,
1651 union iwreq_data *wrqu, char *extra)
1652{
1653 struct wl3501_card *this = netdev_priv(dev);
1654
1655 strlcpy(extra, this->nick, 32);
1656 wrqu->data.length = strlen(extra);
1657 return 0;
1658}
1659
1660static int wl3501_get_rate(struct net_device *dev, struct iw_request_info *info,
1661 union iwreq_data *wrqu, char *extra)
1662{
1663 /*
1664 * FIXME: have to see from where to get this info, perhaps this card
1665 * works at 1 Mbit/s too... for now leave at 2 Mbit/s that is the most
1666 * common with the Planet Access Points. -acme
1667 */
1668 wrqu->bitrate.value = 2000000;
1669 wrqu->bitrate.fixed = 1;
1670 return 0;
1671}
1672
1673static int wl3501_get_rts_threshold(struct net_device *dev,
1674 struct iw_request_info *info,
1675 union iwreq_data *wrqu, char *extra)
1676{
1677 u16 threshold; /* size checked: it is u16 */
1678 struct wl3501_card *this = netdev_priv(dev);
1679 int rc = wl3501_get_mib_value(this, WL3501_MIB_ATTR_RTS_THRESHOLD,
1680 &threshold, sizeof(threshold));
1681 if (!rc) {
1682 wrqu->rts.value = threshold;
1683 wrqu->rts.disabled = threshold >= 2347;
1684 wrqu->rts.fixed = 1;
1685 }
1686 return rc;
1687}
1688
1689static int wl3501_get_frag_threshold(struct net_device *dev,
1690 struct iw_request_info *info,
1691 union iwreq_data *wrqu, char *extra)
1692{
1693 u16 threshold; /* size checked: it is u16 */
1694 struct wl3501_card *this = netdev_priv(dev);
1695 int rc = wl3501_get_mib_value(this, WL3501_MIB_ATTR_FRAG_THRESHOLD,
1696 &threshold, sizeof(threshold));
1697 if (!rc) {
1698 wrqu->frag.value = threshold;
1699 wrqu->frag.disabled = threshold >= 2346;
1700 wrqu->frag.fixed = 1;
1701 }
1702 return rc;
1703}
1704
1705static int wl3501_get_txpow(struct net_device *dev,
1706 struct iw_request_info *info,
1707 union iwreq_data *wrqu, char *extra)
1708{
1709 u16 txpow;
1710 struct wl3501_card *this = netdev_priv(dev);
1711 int rc = wl3501_get_mib_value(this,
1712 WL3501_MIB_ATTR_CURRENT_TX_PWR_LEVEL,
1713 &txpow, sizeof(txpow));
1714 if (!rc) {
1715 wrqu->txpower.value = txpow;
1716 wrqu->txpower.disabled = 0;
1717 /*
1718 * From the MIB values I think this can be configurable,
1719 * as it lists several tx power levels -acme
1720 */
1721 wrqu->txpower.fixed = 0;
1722 wrqu->txpower.flags = IW_TXPOW_MWATT;
1723 }
1724 return rc;
1725}
1726
1727static int wl3501_get_retry(struct net_device *dev,
1728 struct iw_request_info *info,
1729 union iwreq_data *wrqu, char *extra)
1730{
1731 u8 retry; /* size checked: it is u8 */
1732 struct wl3501_card *this = netdev_priv(dev);
1733 int rc = wl3501_get_mib_value(this,
1734 WL3501_MIB_ATTR_LONG_RETRY_LIMIT,
1735 &retry, sizeof(retry));
1736 if (rc)
1737 goto out;
1738 if (wrqu->retry.flags & IW_RETRY_LONG) {
1739 wrqu->retry.flags = IW_RETRY_LIMIT | IW_RETRY_LONG;
1740 goto set_value;
1741 }
1742 rc = wl3501_get_mib_value(this, WL3501_MIB_ATTR_SHORT_RETRY_LIMIT,
1743 &retry, sizeof(retry));
1744 if (rc)
1745 goto out;
1746 wrqu->retry.flags = IW_RETRY_LIMIT | IW_RETRY_SHORT;
1747set_value:
1748 wrqu->retry.value = retry;
1749 wrqu->retry.disabled = 0;
1750out:
1751 return rc;
1752}
1753
1754static int wl3501_get_encode(struct net_device *dev,
1755 struct iw_request_info *info,
1756 union iwreq_data *wrqu, char *extra)
1757{
1758 u8 implemented, restricted, keys[100], len_keys, tocopy;
1759 struct wl3501_card *this = netdev_priv(dev);
1760 int rc = wl3501_get_mib_value(this,
1761 WL3501_MIB_ATTR_PRIV_OPT_IMPLEMENTED,
1762 &implemented, sizeof(implemented));
1763 if (rc)
1764 goto out;
1765 if (!implemented) {
1766 wrqu->encoding.flags = IW_ENCODE_DISABLED;
1767 goto out;
1768 }
1769 rc = wl3501_get_mib_value(this, WL3501_MIB_ATTR_EXCLUDE_UNENCRYPTED,
1770 &restricted, sizeof(restricted));
1771 if (rc)
1772 goto out;
1773 wrqu->encoding.flags = restricted ? IW_ENCODE_RESTRICTED :
1774 IW_ENCODE_OPEN;
1775 rc = wl3501_get_mib_value(this, WL3501_MIB_ATTR_WEP_KEY_MAPPINGS_LEN,
1776 &len_keys, sizeof(len_keys));
1777 if (rc)
1778 goto out;
1779 rc = wl3501_get_mib_value(this, WL3501_MIB_ATTR_WEP_KEY_MAPPINGS,
1780 keys, len_keys);
1781 if (rc)
1782 goto out;
1783 tocopy = min_t(u16, len_keys, wrqu->encoding.length);
1784 tocopy = min_t(u8, tocopy, 100);
1785 wrqu->encoding.length = tocopy;
1786 memcpy(extra, keys, tocopy);
1787out:
1788 return rc;
1789}
1790
1791static int wl3501_get_power(struct net_device *dev,
1792 struct iw_request_info *info,
1793 union iwreq_data *wrqu, char *extra)
1794{
1795 u8 pwr_state;
1796 struct wl3501_card *this = netdev_priv(dev);
1797 int rc = wl3501_get_mib_value(this,
1798 WL3501_MIB_ATTR_CURRENT_PWR_STATE,
1799 &pwr_state, sizeof(pwr_state));
1800 if (rc)
1801 goto out;
1802 wrqu->power.disabled = !pwr_state;
1803 wrqu->power.flags = IW_POWER_ON;
1804out:
1805 return rc;
1806}
1807
1808static const iw_handler wl3501_handler[] = {
1809 IW_HANDLER(SIOCGIWNAME, wl3501_get_name),
1810 IW_HANDLER(SIOCSIWFREQ, wl3501_set_freq),
1811 IW_HANDLER(SIOCGIWFREQ, wl3501_get_freq),
1812 IW_HANDLER(SIOCSIWMODE, wl3501_set_mode),
1813 IW_HANDLER(SIOCGIWMODE, wl3501_get_mode),
1814 IW_HANDLER(SIOCGIWSENS, wl3501_get_sens),
1815 IW_HANDLER(SIOCGIWRANGE, wl3501_get_range),
1816 IW_HANDLER(SIOCSIWSPY, iw_handler_set_spy),
1817 IW_HANDLER(SIOCGIWSPY, iw_handler_get_spy),
1818 IW_HANDLER(SIOCSIWTHRSPY, iw_handler_set_thrspy),
1819 IW_HANDLER(SIOCGIWTHRSPY, iw_handler_get_thrspy),
1820 IW_HANDLER(SIOCSIWAP, wl3501_set_wap),
1821 IW_HANDLER(SIOCGIWAP, wl3501_get_wap),
1822 IW_HANDLER(SIOCSIWSCAN, wl3501_set_scan),
1823 IW_HANDLER(SIOCGIWSCAN, wl3501_get_scan),
1824 IW_HANDLER(SIOCSIWESSID, wl3501_set_essid),
1825 IW_HANDLER(SIOCGIWESSID, wl3501_get_essid),
1826 IW_HANDLER(SIOCSIWNICKN, wl3501_set_nick),
1827 IW_HANDLER(SIOCGIWNICKN, wl3501_get_nick),
1828 IW_HANDLER(SIOCGIWRATE, wl3501_get_rate),
1829 IW_HANDLER(SIOCGIWRTS, wl3501_get_rts_threshold),
1830 IW_HANDLER(SIOCGIWFRAG, wl3501_get_frag_threshold),
1831 IW_HANDLER(SIOCGIWTXPOW, wl3501_get_txpow),
1832 IW_HANDLER(SIOCGIWRETRY, wl3501_get_retry),
1833 IW_HANDLER(SIOCGIWENCODE, wl3501_get_encode),
1834 IW_HANDLER(SIOCGIWPOWER, wl3501_get_power),
1835};
1836
1837static const struct iw_handler_def wl3501_handler_def = {
1838 .num_standard = ARRAY_SIZE(wl3501_handler),
1839 .standard = (iw_handler *)wl3501_handler,
1840 .get_wireless_stats = wl3501_get_wireless_stats,
1841};
1842
1843static const struct net_device_ops wl3501_netdev_ops = {
1844 .ndo_open = wl3501_open,
1845 .ndo_stop = wl3501_close,
1846 .ndo_start_xmit = wl3501_hard_start_xmit,
1847 .ndo_tx_timeout = wl3501_tx_timeout,
1848 .ndo_change_mtu = eth_change_mtu,
1849 .ndo_set_mac_address = eth_mac_addr,
1850 .ndo_validate_addr = eth_validate_addr,
1851};
1852
1853static int wl3501_probe(struct pcmcia_device *p_dev)
1854{
1855 struct net_device *dev;
1856 struct wl3501_card *this;
1857
1858 /* The io structure describes IO port mapping */
1859 p_dev->resource[0]->end = 16;
1860 p_dev->resource[0]->flags = IO_DATA_PATH_WIDTH_8;
1861
1862 /* General socket configuration */
1863 p_dev->config_flags = CONF_ENABLE_IRQ;
1864 p_dev->config_index = 1;
1865
1866 dev = alloc_etherdev(sizeof(struct wl3501_card));
1867 if (!dev)
1868 goto out_link;
1869
1870
1871 dev->netdev_ops = &wl3501_netdev_ops;
1872 dev->watchdog_timeo = 5 * HZ;
1873
1874 this = netdev_priv(dev);
1875 this->wireless_data.spy_data = &this->spy_data;
1876 this->p_dev = p_dev;
1877 dev->wireless_data = &this->wireless_data;
1878 dev->wireless_handlers = &wl3501_handler_def;
1879 netif_stop_queue(dev);
1880 p_dev->priv = dev;
1881
1882 return wl3501_config(p_dev);
1883out_link:
1884 return -ENOMEM;
1885}
1886
1887static int wl3501_config(struct pcmcia_device *link)
1888{
1889 struct net_device *dev = link->priv;
1890 int i = 0, j, ret;
1891 struct wl3501_card *this;
1892
1893 /* Try allocating IO ports. This tries a few fixed addresses. If you
1894 * want, you can also read the card's config table to pick addresses --
1895 * see the serial driver for an example. */
1896 link->io_lines = 5;
1897
1898 for (j = 0x280; j < 0x400; j += 0x20) {
1899 /* The '^0x300' is so that we probe 0x300-0x3ff first, then
1900 * 0x200-0x2ff, and so on, because this seems safer */
1901 link->resource[0]->start = j;
1902 link->resource[1]->start = link->resource[0]->start + 0x10;
1903 i = pcmcia_request_io(link);
1904 if (i == 0)
1905 break;
1906 }
1907 if (i != 0)
1908 goto failed;
1909
1910 /* Now allocate an interrupt line. Note that this does not actually
1911 * assign a handler to the interrupt. */
1912
1913 ret = pcmcia_request_irq(link, wl3501_interrupt);
1914 if (ret)
1915 goto failed;
1916
1917 ret = pcmcia_enable_device(link);
1918 if (ret)
1919 goto failed;
1920
1921 dev->irq = link->irq;
1922 dev->base_addr = link->resource[0]->start;
1923 SET_NETDEV_DEV(dev, &link->dev);
1924 if (register_netdev(dev)) {
1925 printk(KERN_NOTICE "wl3501_cs: register_netdev() failed\n");
1926 goto failed;
1927 }
1928
1929 this = netdev_priv(dev);
1930
1931 this->base_addr = dev->base_addr;
1932
1933 if (!wl3501_get_flash_mac_addr(this)) {
1934 printk(KERN_WARNING "%s: Can't read MAC addr in flash ROM?\n",
1935 dev->name);
1936 unregister_netdev(dev);
1937 goto failed;
1938 }
1939
1940 for (i = 0; i < 6; i++)
1941 dev->dev_addr[i] = ((char *)&this->mac_addr)[i];
1942
1943 /* print probe information */
1944 printk(KERN_INFO "%s: wl3501 @ 0x%3.3x, IRQ %d, "
1945 "MAC addr in flash ROM:%pM\n",
1946 dev->name, this->base_addr, (int)dev->irq,
1947 dev->dev_addr);
1948 /*
1949 * Initialize card parameters - added by jss
1950 */
1951 this->net_type = IW_MODE_INFRA;
1952 this->bss_cnt = 0;
1953 this->join_sta_bss = 0;
1954 this->adhoc_times = 0;
1955 iw_set_mgmt_info_element(IW_MGMT_INFO_ELEMENT_SSID, &this->essid.el,
1956 "ANY", 3);
1957 this->card_name[0] = '\0';
1958 this->firmware_date[0] = '\0';
1959 this->rssi = 255;
1960 this->chan = iw_default_channel(this->reg_domain);
1961 strlcpy(this->nick, "Planet WL3501", sizeof(this->nick));
1962 spin_lock_init(&this->lock);
1963 init_waitqueue_head(&this->wait);
1964 netif_start_queue(dev);
1965 return 0;
1966
1967failed:
1968 wl3501_release(link);
1969 return -ENODEV;
1970}
1971
1972static void wl3501_release(struct pcmcia_device *link)
1973{
1974 pcmcia_disable_device(link);
1975}
1976
1977static int wl3501_suspend(struct pcmcia_device *link)
1978{
1979 struct net_device *dev = link->priv;
1980
1981 wl3501_pwr_mgmt(netdev_priv(dev), WL3501_SUSPEND);
1982 if (link->open)
1983 netif_device_detach(dev);
1984
1985 return 0;
1986}
1987
1988static int wl3501_resume(struct pcmcia_device *link)
1989{
1990 struct net_device *dev = link->priv;
1991
1992 wl3501_pwr_mgmt(netdev_priv(dev), WL3501_RESUME);
1993 if (link->open) {
1994 wl3501_reset(dev);
1995 netif_device_attach(dev);
1996 }
1997
1998 return 0;
1999}
2000
2001
2002static const struct pcmcia_device_id wl3501_ids[] = {
2003 PCMCIA_DEVICE_MANF_CARD(0xd601, 0x0001),
2004 PCMCIA_DEVICE_NULL
2005};
2006MODULE_DEVICE_TABLE(pcmcia, wl3501_ids);
2007
2008static struct pcmcia_driver wl3501_driver = {
2009 .owner = THIS_MODULE,
2010 .name = "wl3501_cs",
2011 .probe = wl3501_probe,
2012 .remove = wl3501_detach,
2013 .id_table = wl3501_ids,
2014 .suspend = wl3501_suspend,
2015 .resume = wl3501_resume,
2016};
2017
2018static int __init wl3501_init_module(void)
2019{
2020 return pcmcia_register_driver(&wl3501_driver);
2021}
2022
2023static void __exit wl3501_exit_module(void)
2024{
2025 pcmcia_unregister_driver(&wl3501_driver);
2026}
2027
2028module_init(wl3501_init_module);
2029module_exit(wl3501_exit_module);
2030
2031MODULE_AUTHOR("Fox Chen <mhchen@golf.ccl.itri.org.tw>, "
2032 "Arnaldo Carvalho de Melo <acme@conectiva.com.br>,"
2033 "Gustavo Niemeyer <niemeyer@conectiva.com>");
2034MODULE_DESCRIPTION("Planet wl3501 wireless driver");
2035MODULE_LICENSE("GPL");