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[TG3]: Set minimal hw interrupt mitigation.
[linux-2.6/verdex.git] / drivers / net / wireless / wl3501_cs.c
blob1433e5aaf1b408883a7b389b19550527ac4418a2
1 /*
2 * WL3501 Wireless LAN PCMCIA Card Driver for Linux
3 * Written originally for Linux 2.0.30 by Fox Chen, mhchen@golf.ccl.itri.org.tw
4 * Ported to 2.2, 2.4 & 2.5 by Arnaldo Carvalho de Melo <acme@conectiva.com.br>
5 * Wireless extensions in 2.4 by Gustavo Niemeyer <niemeyer@conectiva.com>
6 *
7 * References used by Fox Chen while writing the original driver for 2.0.30:
8 *
9 * 1. WL24xx packet drivers (tooasm.asm)
10 * 2. Access Point Firmware Interface Specification for IEEE 802.11 SUTRO
11 * 3. IEEE 802.11
12 * 4. Linux network driver (/usr/src/linux/drivers/net)
13 * 5. ISA card driver - wl24.c
14 * 6. Linux PCMCIA skeleton driver - skeleton.c
15 * 7. Linux PCMCIA 3c589 network driver - 3c589_cs.c
16 *
17 * Tested with WL2400 firmware 1.2, Linux 2.0.30, and pcmcia-cs-2.9.12
18 * 1. Performance: about 165 Kbytes/sec in TCP/IP with Ad-Hoc mode.
19 * rsh 192.168.1.3 "dd if=/dev/zero bs=1k count=1000" > /dev/null
20 * (Specification 2M bits/sec. is about 250 Kbytes/sec., but we must deduct
21 * ETHER/IP/UDP/TCP header, and acknowledgement overhead)
22 *
23 * Tested with Planet AP in 2.4.17, 184 Kbytes/s in UDP in Infrastructure mode,
24 * 173 Kbytes/s in TCP.
25 *
26 * Tested with Planet AP in 2.5.73-bk, 216 Kbytes/s in Infrastructure mode
27 * with a SMP machine (dual pentium 100), using pktgen, 432 pps (pkt_size = 60)
28 */
29 #undef REALLY_SLOW_IO /* most systems can safely undef this */
30
31 #include <linux/config.h>
32 #include <linux/delay.h>
33 #include <linux/types.h>
34 #include <linux/ethtool.h>
35 #include <linux/init.h>
36 #include <linux/interrupt.h>
37 #include <linux/in.h>
38 #include <linux/kernel.h>
39 #include <linux/module.h>
40 #include <linux/fcntl.h>
41 #include <linux/if_arp.h>
42 #include <linux/ioport.h>
43 #include <linux/netdevice.h>
44 #include <linux/etherdevice.h>
45 #include <linux/skbuff.h>
46 #include <linux/slab.h>
47 #include <linux/string.h>
48 #include <linux/wireless.h>
49
50 #include <net/iw_handler.h>
51
52 #include <pcmcia/version.h>
53 #include <pcmcia/cs_types.h>
54 #include <pcmcia/cs.h>
55 #include <pcmcia/cistpl.h>
56 #include <pcmcia/cisreg.h>
57 #include <pcmcia/ds.h>
58
59 #include <asm/io.h>
60 #include <asm/uaccess.h>
61 #include <asm/system.h>
62
63 #include "wl3501.h"
64
65 #ifndef __i386__
66 #define slow_down_io()
67 #endif
68
69 /* For rough constant delay */
70 #define WL3501_NOPLOOP(n) { int x = 0; while (x++ < n) slow_down_io(); }
71
72 /*
73 * All the PCMCIA modules use PCMCIA_DEBUG to control debugging. If you do not
74 * define PCMCIA_DEBUG at all, all the debug code will be left out. If you
75 * compile with PCMCIA_DEBUG=0, the debug code will be present but disabled --
76 * but it can then be enabled for specific modules at load time with a
77 * 'pc_debug=#' option to insmod.
78 */
79 #define PCMCIA_DEBUG 0
80 #ifdef PCMCIA_DEBUG
81 static int pc_debug = PCMCIA_DEBUG;
82 module_param(pc_debug, int, 0);
83 #define dprintk(n, format, args...) \
84 { if (pc_debug > (n)) \
85 printk(KERN_INFO "%s: " format "\n", __FUNCTION__ , ##args); }
86 #else
87 #define dprintk(n, format, args...)
88 #endif
89
90 #define wl3501_outb(a, b) { outb(a, b); slow_down_io(); }
91 #define wl3501_outb_p(a, b) { outb_p(a, b); slow_down_io(); }
92 #define wl3501_outsb(a, b, c) { outsb(a, b, c); slow_down_io(); }
93
94 #define WL3501_RELEASE_TIMEOUT (25 * HZ)
95 #define WL3501_MAX_ADHOC_TRIES 16
96
97 #define WL3501_RESUME 0
98 #define WL3501_SUSPEND 1
99
100 /*
101 * The event() function is this driver's Card Services event handler. It will
102 * be called by Card Services when an appropriate card status event is
103 * received. The config() and release() entry points are used to configure or
104 * release a socket, in response to card insertion and ejection events. They
105 * are invoked from the wl24 event handler.
106 */
107 static void wl3501_config(dev_link_t *link);
108 static void wl3501_release(dev_link_t *link);
109 static int wl3501_event(event_t event, int pri, event_callback_args_t *args);
110
111 /*
112 * The dev_info variable is the "key" that is used to match up this
113 * device driver with appropriate cards, through the card configuration
114 * database.
115 */
116 static dev_info_t wl3501_dev_info = "wl3501_cs";
117
118 static int wl3501_chan2freq[] = {
119 [0] = 2412, [1] = 2417, [2] = 2422, [3] = 2427, [4] = 2432,
120 [5] = 2437, [6] = 2442, [7] = 2447, [8] = 2452, [9] = 2457,
121 [10] = 2462, [11] = 2467, [12] = 2472, [13] = 2477,
122 };
123
124 static const struct {
125 int reg_domain;
126 int min, max, deflt;
127 } iw_channel_table[] = {
128 {
129 .reg_domain = IW_REG_DOMAIN_FCC,
130 .min = 1,
131 .max = 11,
132 .deflt = 1,
133 },
134 {
135 .reg_domain = IW_REG_DOMAIN_DOC,
136 .min = 1,
137 .max = 11,
138 .deflt = 1,
139 },
140 {
141 .reg_domain = IW_REG_DOMAIN_ETSI,
142 .min = 1,
143 .max = 13,
144 .deflt = 1,
145 },
146 {
147 .reg_domain = IW_REG_DOMAIN_SPAIN,
148 .min = 10,
149 .max = 11,
150 .deflt = 10,
151 },
152 {
153 .reg_domain = IW_REG_DOMAIN_FRANCE,
154 .min = 10,
155 .max = 13,
156 .deflt = 10,
157 },
158 {
159 .reg_domain = IW_REG_DOMAIN_MKK,
160 .min = 14,
161 .max = 14,
162 .deflt = 14,
163 },
164 {
165 .reg_domain = IW_REG_DOMAIN_MKK1,
166 .min = 1,
167 .max = 14,
168 .deflt = 1,
169 },
170 {
171 .reg_domain = IW_REG_DOMAIN_ISRAEL,
172 .min = 3,
173 .max = 9,
174 .deflt = 9,
175 },
176 };
177
178 /**
179 * iw_valid_channel - validate channel in regulatory domain
180 * @reg_comain - regulatory domain
181 * @channel - channel to validate
182 *
183 * Returns 0 if invalid in the specified regulatory domain, non-zero if valid.
184 */
185 static int iw_valid_channel(int reg_domain, int channel)
186 {
187 int i, rc = 0;
188
189 for (i = 0; i < ARRAY_SIZE(iw_channel_table); i++)
190 if (reg_domain == iw_channel_table[i].reg_domain) {
191 rc = channel >= iw_channel_table[i].min &&
192 channel <= iw_channel_table[i].max;
193 break;
194 }
195 return rc;
196 }
197
198 /**
199 * iw_default_channel - get default channel for a regulatory domain
200 * @reg_comain - regulatory domain
201 *
202 * Returns the default channel for a regulatory domain
203 */
204 static int iw_default_channel(int reg_domain)
205 {
206 int i, rc = 1;
207
208 for (i = 0; i < ARRAY_SIZE(iw_channel_table); i++)
209 if (reg_domain == iw_channel_table[i].reg_domain) {
210 rc = iw_channel_table[i].deflt;
211 break;
212 }
213 return rc;
214 }
215
216 static void iw_set_mgmt_info_element(enum iw_mgmt_info_element_ids id,
217 struct iw_mgmt_info_element *el,
218 void *value, int len)
219 {
220 el->id = id;
221 el->len = len;
222 memcpy(el->data, value, len);
223 }
224
225 static void iw_copy_mgmt_info_element(struct iw_mgmt_info_element *to,
226 struct iw_mgmt_info_element *from)
227 {
228 iw_set_mgmt_info_element(from->id, to, from->data, from->len);
229 }
230
231 /*
232 * A linked list of "instances" of the wl24 device. Each actual PCMCIA card
233 * corresponds to one device instance, and is described by one dev_link_t
234 * structure (defined in ds.h).
235 *
236 * You may not want to use a linked list for this -- for example, the memory
237 * card driver uses an array of dev_link_t pointers, where minor device numbers
238 * are used to derive the corresponding array index.
239 */
240 static dev_link_t *wl3501_dev_list;
241
242 static inline void wl3501_switch_page(struct wl3501_card *this, u8 page)
243 {
244 wl3501_outb(page, this->base_addr + WL3501_NIC_BSS);
245 }
246
247 /*
248 * Get Ethernet MAC addresss.
249 *
250 * WARNING: We switch to FPAGE0 and switc back again.
251 * Making sure there is no other WL function beening called by ISR.
252 */
253 static int wl3501_get_flash_mac_addr(struct wl3501_card *this)
254 {
255 int base_addr = this->base_addr;
256
257 /* get MAC addr */
258 wl3501_outb(WL3501_BSS_FPAGE3, base_addr + WL3501_NIC_BSS); /* BSS */
259 wl3501_outb(0x00, base_addr + WL3501_NIC_LMAL); /* LMAL */
260 wl3501_outb(0x40, base_addr + WL3501_NIC_LMAH); /* LMAH */
261
262 /* wait for reading EEPROM */
263 WL3501_NOPLOOP(100);
264 this->mac_addr[0] = inb(base_addr + WL3501_NIC_IODPA);
265 WL3501_NOPLOOP(100);
266 this->mac_addr[1] = inb(base_addr + WL3501_NIC_IODPA);
267 WL3501_NOPLOOP(100);
268 this->mac_addr[2] = inb(base_addr + WL3501_NIC_IODPA);
269 WL3501_NOPLOOP(100);
270 this->mac_addr[3] = inb(base_addr + WL3501_NIC_IODPA);
271 WL3501_NOPLOOP(100);
272 this->mac_addr[4] = inb(base_addr + WL3501_NIC_IODPA);
273 WL3501_NOPLOOP(100);
274 this->mac_addr[5] = inb(base_addr + WL3501_NIC_IODPA);
275 WL3501_NOPLOOP(100);
276 this->reg_domain = inb(base_addr + WL3501_NIC_IODPA);
277 WL3501_NOPLOOP(100);
278 wl3501_outb(WL3501_BSS_FPAGE0, base_addr + WL3501_NIC_BSS);
279 wl3501_outb(0x04, base_addr + WL3501_NIC_LMAL);
280 wl3501_outb(0x40, base_addr + WL3501_NIC_LMAH);
281 WL3501_NOPLOOP(100);
282 this->version[0] = inb(base_addr + WL3501_NIC_IODPA);
283 WL3501_NOPLOOP(100);
284 this->version[1] = inb(base_addr + WL3501_NIC_IODPA);
285 /* switch to SRAM Page 0 (for safety) */
286 wl3501_switch_page(this, WL3501_BSS_SPAGE0);
287
288 /* The MAC addr should be 00:60:... */
289 return this->mac_addr[0] == 0x00 && this->mac_addr[1] == 0x60;
290 }
291
292 /**
293 * wl3501_set_to_wla - Move 'size' bytes from PC to card
294 * @dest: Card addressing space
295 * @src: PC addressing space
296 * @size: Bytes to move
297 *
298 * Move 'size' bytes from PC to card. (Shouldn't be interrupted)
299 */
300 void wl3501_set_to_wla(struct wl3501_card *this, u16 dest, void *src, int size)
301 {
302 /* switch to SRAM Page 0 */
303 wl3501_switch_page(this, (dest & 0x8000) ? WL3501_BSS_SPAGE1 :
304 WL3501_BSS_SPAGE0);
305 /* set LMAL and LMAH */
306 wl3501_outb(dest & 0xff, this->base_addr + WL3501_NIC_LMAL);
307 wl3501_outb(((dest >> 8) & 0x7f), this->base_addr + WL3501_NIC_LMAH);
308
309 /* rep out to Port A */
310 wl3501_outsb(this->base_addr + WL3501_NIC_IODPA, src, size);
311 }
312
313 /**
314 * wl3501_get_from_wla - Move 'size' bytes from card to PC
315 * @src: Card addressing space
316 * @dest: PC addressing space
317 * @size: Bytes to move
318 *
319 * Move 'size' bytes from card to PC. (Shouldn't be interrupted)
320 */
321 void wl3501_get_from_wla(struct wl3501_card *this, u16 src, void *dest,
322 int size)
323 {
324 /* switch to SRAM Page 0 */
325 wl3501_switch_page(this, (src & 0x8000) ? WL3501_BSS_SPAGE1 :
326 WL3501_BSS_SPAGE0);
327 /* set LMAL and LMAH */
328 wl3501_outb(src & 0xff, this->base_addr + WL3501_NIC_LMAL);
329 wl3501_outb((src >> 8) & 0x7f, this->base_addr + WL3501_NIC_LMAH);
330
331 /* rep get from Port A */
332 insb(this->base_addr + WL3501_NIC_IODPA, dest, size);
333 }
334
335 /*
336 * Get/Allocate a free Tx Data Buffer
337 *
338 * *--------------*-----------------*----------------------------------*
339 * | PLCP | MAC Header | DST SRC Data ... |
340 * | (24 bytes) | (30 bytes) | (6) (6) (Ethernet Row Data) |
341 * *--------------*-----------------*----------------------------------*
342 * \ \- IEEE 802.11 -/ \-------------- len --------------/
343 * \-struct wl3501_80211_tx_hdr--/ \-------- Ethernet Frame -------/
344 *
345 * Return = Postion in Card
346 */
347 static u16 wl3501_get_tx_buffer(struct wl3501_card *this, u16 len)
348 {
349 u16 next, blk_cnt = 0, zero = 0;
350 u16 full_len = sizeof(struct wl3501_80211_tx_hdr) + len;
351 u16 ret = 0;
352
353 if (full_len > this->tx_buffer_cnt * 254)
354 goto out;
355 ret = this->tx_buffer_head;
356 while (full_len) {
357 if (full_len < 254)
358 full_len = 0;
359 else
360 full_len -= 254;
361 wl3501_get_from_wla(this, this->tx_buffer_head, &next,
362 sizeof(next));
363 if (!full_len)
364 wl3501_set_to_wla(this, this->tx_buffer_head, &zero,
365 sizeof(zero));
366 this->tx_buffer_head = next;
367 blk_cnt++;
368 /* if buffer is not enough */
369 if (!next && full_len) {
370 this->tx_buffer_head = ret;
371 ret = 0;
372 goto out;
373 }
374 }
375 this->tx_buffer_cnt -= blk_cnt;
376 out:
377 return ret;
378 }
379
380 /*
381 * Free an allocated Tx Buffer. ptr must be correct position.
382 */
383 static void wl3501_free_tx_buffer(struct wl3501_card *this, u16 ptr)
384 {
385 /* check if all space is not free */
386 if (!this->tx_buffer_head)
387 this->tx_buffer_head = ptr;
388 else
389 wl3501_set_to_wla(this, this->tx_buffer_tail,
390 &ptr, sizeof(ptr));
391 while (ptr) {
392 u16 next;
393
394 this->tx_buffer_cnt++;
395 wl3501_get_from_wla(this, ptr, &next, sizeof(next));
396 this->tx_buffer_tail = ptr;
397 ptr = next;
398 }
399 }
400
401 static int wl3501_esbq_req_test(struct wl3501_card *this)
402 {
403 u8 tmp;
404
405 wl3501_get_from_wla(this, this->esbq_req_head + 3, &tmp, sizeof(tmp));
406 return tmp & 0x80;
407 }
408
409 static void wl3501_esbq_req(struct wl3501_card *this, u16 *ptr)
410 {
411 u16 tmp = 0;
412
413 wl3501_set_to_wla(this, this->esbq_req_head, ptr, 2);
414 wl3501_set_to_wla(this, this->esbq_req_head + 2, &tmp, sizeof(tmp));
415 this->esbq_req_head += 4;
416 if (this->esbq_req_head >= this->esbq_req_end)
417 this->esbq_req_head = this->esbq_req_start;
418 }
419
420 static int wl3501_esbq_exec(struct wl3501_card *this, void *sig, int sig_size)
421 {
422 int rc = -EIO;
423
424 if (wl3501_esbq_req_test(this)) {
425 u16 ptr = wl3501_get_tx_buffer(this, sig_size);
426 if (ptr) {
427 wl3501_set_to_wla(this, ptr, sig, sig_size);
428 wl3501_esbq_req(this, &ptr);
429 rc = 0;
430 }
431 }
432 return rc;
433 }
434
435 static int wl3501_get_mib_value(struct wl3501_card *this, u8 index,
436 void *bf, int size)
437 {
438 struct wl3501_get_req sig = {
439 .sig_id = WL3501_SIG_GET_REQ,
440 .mib_attrib = index,
441 };
442 unsigned long flags;
443 int rc = -EIO;
444
445 spin_lock_irqsave(&this->lock, flags);
446 if (wl3501_esbq_req_test(this)) {
447 u16 ptr = wl3501_get_tx_buffer(this, sizeof(sig));
448 if (ptr) {
449 wl3501_set_to_wla(this, ptr, &sig, sizeof(sig));
450 wl3501_esbq_req(this, &ptr);
451 this->sig_get_confirm.mib_status = 255;
452 spin_unlock_irqrestore(&this->lock, flags);
453 rc = wait_event_interruptible(this->wait,
454 this->sig_get_confirm.mib_status != 255);
455 if (!rc)
456 memcpy(bf, this->sig_get_confirm.mib_value,
457 size);
458 goto out;
459 }
460 }
461 spin_unlock_irqrestore(&this->lock, flags);
462 out:
463 return rc;
464 }
465
466 static int wl3501_pwr_mgmt(struct wl3501_card *this, int suspend)
467 {
468 struct wl3501_pwr_mgmt_req sig = {
469 .sig_id = WL3501_SIG_PWR_MGMT_REQ,
470 .pwr_save = suspend,
471 .wake_up = !suspend,
472 .receive_dtims = 10,
473 };
474 unsigned long flags;
475 int rc = -EIO;
476
477 spin_lock_irqsave(&this->lock, flags);
478 if (wl3501_esbq_req_test(this)) {
479 u16 ptr = wl3501_get_tx_buffer(this, sizeof(sig));
480 if (ptr) {
481 wl3501_set_to_wla(this, ptr, &sig, sizeof(sig));
482 wl3501_esbq_req(this, &ptr);
483 this->sig_pwr_mgmt_confirm.status = 255;
484 spin_unlock_irqrestore(&this->lock, flags);
485 rc = wait_event_interruptible(this->wait,
486 this->sig_pwr_mgmt_confirm.status != 255);
487 printk(KERN_INFO "%s: %s status=%d\n", __FUNCTION__,
488 suspend ? "suspend" : "resume",
489 this->sig_pwr_mgmt_confirm.status);
490 goto out;
491 }
492 }
493 spin_unlock_irqrestore(&this->lock, flags);
494 out:
495 return rc;
496 }
497
498 /**
499 * wl3501_send_pkt - Send a packet.
500 * @this - card
501 *
502 * Send a packet.
503 *
504 * data = Ethernet raw frame. (e.g. data[0] - data[5] is Dest MAC Addr,
505 * data[6] - data[11] is Src MAC Addr)
506 * Ref: IEEE 802.11
507 */
508 static int wl3501_send_pkt(struct wl3501_card *this, u8 *data, u16 len)
509 {
510 u16 bf, sig_bf, next, tmplen, pktlen;
511 struct wl3501_md_req sig = {
512 .sig_id = WL3501_SIG_MD_REQ,
513 };
514 u8 *pdata = (char *)data;
515 int rc = -EIO;
516
517 if (wl3501_esbq_req_test(this)) {
518 sig_bf = wl3501_get_tx_buffer(this, sizeof(sig));
519 rc = -ENOMEM;
520 if (!sig_bf) /* No free buffer available */
521 goto out;
522 bf = wl3501_get_tx_buffer(this, len + 26 + 24);
523 if (!bf) {
524 /* No free buffer available */
525 wl3501_free_tx_buffer(this, sig_bf);
526 goto out;
527 }
528 rc = 0;
529 memcpy(&sig.daddr[0], pdata, 12);
530 pktlen = len - 12;
531 pdata += 12;
532 sig.data = bf;
533 if (((*pdata) * 256 + (*(pdata + 1))) > 1500) {
534 u8 addr4[ETH_ALEN] = {
535 [0] = 0xAA, [1] = 0xAA, [2] = 0x03, [4] = 0x00,
536 };
537
538 wl3501_set_to_wla(this, bf + 2 +
539 offsetof(struct wl3501_tx_hdr, addr4),
540 addr4, sizeof(addr4));
541 sig.size = pktlen + 24 + 4 + 6;
542 if (pktlen > (254 - sizeof(struct wl3501_tx_hdr))) {
543 tmplen = 254 - sizeof(struct wl3501_tx_hdr);
544 pktlen -= tmplen;
545 } else {
546 tmplen = pktlen;
547 pktlen = 0;
548 }
549 wl3501_set_to_wla(this,
550 bf + 2 + sizeof(struct wl3501_tx_hdr),
551 pdata, tmplen);
552 pdata += tmplen;
553 wl3501_get_from_wla(this, bf, &next, sizeof(next));
554 bf = next;
555 } else {
556 sig.size = pktlen + 24 + 4 - 2;
557 pdata += 2;
558 pktlen -= 2;
559 if (pktlen > (254 - sizeof(struct wl3501_tx_hdr) + 6)) {
560 tmplen = 254 - sizeof(struct wl3501_tx_hdr) + 6;
561 pktlen -= tmplen;
562 } else {
563 tmplen = pktlen;
564 pktlen = 0;
565 }
566 wl3501_set_to_wla(this, bf + 2 +
567 offsetof(struct wl3501_tx_hdr, addr4),
568 pdata, tmplen);
569 pdata += tmplen;
570 wl3501_get_from_wla(this, bf, &next, sizeof(next));
571 bf = next;
572 }
573 while (pktlen > 0) {
574 if (pktlen > 254) {
575 tmplen = 254;
576 pktlen -= 254;
577 } else {
578 tmplen = pktlen;
579 pktlen = 0;
580 }
581 wl3501_set_to_wla(this, bf + 2, pdata, tmplen);
582 pdata += tmplen;
583 wl3501_get_from_wla(this, bf, &next, sizeof(next));
584 bf = next;
585 }
586 wl3501_set_to_wla(this, sig_bf, &sig, sizeof(sig));
587 wl3501_esbq_req(this, &sig_bf);
588 }
589 out:
590 return rc;
591 }
592
593 static int wl3501_mgmt_resync(struct wl3501_card *this)
594 {
595 struct wl3501_resync_req sig = {
596 .sig_id = WL3501_SIG_RESYNC_REQ,
597 };
598
599 return wl3501_esbq_exec(this, &sig, sizeof(sig));
600 }
601
602 static inline int wl3501_fw_bss_type(struct wl3501_card *this)
603 {
604 return this->net_type == IW_MODE_INFRA ? WL3501_NET_TYPE_INFRA :
605 WL3501_NET_TYPE_ADHOC;
606 }
607
608 static inline int wl3501_fw_cap_info(struct wl3501_card *this)
609 {
610 return this->net_type == IW_MODE_INFRA ? WL3501_MGMT_CAPABILITY_ESS :
611 WL3501_MGMT_CAPABILITY_IBSS;
612 }
613
614 static int wl3501_mgmt_scan(struct wl3501_card *this, u16 chan_time)
615 {
616 struct wl3501_scan_req sig = {
617 .sig_id = WL3501_SIG_SCAN_REQ,
618 .scan_type = WL3501_SCAN_TYPE_ACTIVE,
619 .probe_delay = 0x10,
620 .min_chan_time = chan_time,
621 .max_chan_time = chan_time,
622 .bss_type = wl3501_fw_bss_type(this),
623 };
624
625 this->bss_cnt = this->join_sta_bss = 0;
626 return wl3501_esbq_exec(this, &sig, sizeof(sig));
627 }
628
629 static int wl3501_mgmt_join(struct wl3501_card *this, u16 stas)
630 {
631 struct wl3501_join_req sig = {
632 .sig_id = WL3501_SIG_JOIN_REQ,
633 .timeout = 10,
634 .ds_pset = {
635 .el = {
636 .id = IW_MGMT_INFO_ELEMENT_DS_PARAMETER_SET,
637 .len = 1,
638 },
639 .chan = this->chan,
640 },
641 };
642
643 memcpy(&sig.beacon_period, &this->bss_set[stas].beacon_period, 72);
644 return wl3501_esbq_exec(this, &sig, sizeof(sig));
645 }
646
647 static int wl3501_mgmt_start(struct wl3501_card *this)
648 {
649 struct wl3501_start_req sig = {
650 .sig_id = WL3501_SIG_START_REQ,
651 .beacon_period = 400,
652 .dtim_period = 1,
653 .ds_pset = {
654 .el = {
655 .id = IW_MGMT_INFO_ELEMENT_DS_PARAMETER_SET,
656 .len = 1,
657 },
658 .chan = this->chan,
659 },
660 .bss_basic_rset = {
661 .el = {
662 .id = IW_MGMT_INFO_ELEMENT_SUPPORTED_RATES,
663 .len = 2,
664 },
665 .data_rate_labels = {
666 [0] = IW_MGMT_RATE_LABEL_MANDATORY |
667 IW_MGMT_RATE_LABEL_1MBIT,
668 [1] = IW_MGMT_RATE_LABEL_MANDATORY |
669 IW_MGMT_RATE_LABEL_2MBIT,
670 },
671 },
672 .operational_rset = {
673 .el = {
674 .id = IW_MGMT_INFO_ELEMENT_SUPPORTED_RATES,
675 .len = 2,
676 },
677 .data_rate_labels = {
678 [0] = IW_MGMT_RATE_LABEL_MANDATORY |
679 IW_MGMT_RATE_LABEL_1MBIT,
680 [1] = IW_MGMT_RATE_LABEL_MANDATORY |
681 IW_MGMT_RATE_LABEL_2MBIT,
682 },
683 },
684 .ibss_pset = {
685 .el = {
686 .id = IW_MGMT_INFO_ELEMENT_IBSS_PARAMETER_SET,
687 .len = 2,
688 },
689 .atim_window = 10,
690 },
691 .bss_type = wl3501_fw_bss_type(this),
692 .cap_info = wl3501_fw_cap_info(this),
693 };
694
695 iw_copy_mgmt_info_element(&sig.ssid.el, &this->essid.el);
696 iw_copy_mgmt_info_element(&this->keep_essid.el, &this->essid.el);
697 return wl3501_esbq_exec(this, &sig, sizeof(sig));
698 }
699
700 static void wl3501_mgmt_scan_confirm(struct wl3501_card *this, u16 addr)
701 {
702 u16 i = 0;
703 int matchflag = 0;
704 struct wl3501_scan_confirm sig;
705
706 dprintk(3, "entry");
707 wl3501_get_from_wla(this, addr, &sig, sizeof(sig));
708 if (sig.status == WL3501_STATUS_SUCCESS) {
709 dprintk(3, "success");
710 if ((this->net_type == IW_MODE_INFRA &&
711 (sig.cap_info & WL3501_MGMT_CAPABILITY_ESS)) ||
712 (this->net_type == IW_MODE_ADHOC &&
713 (sig.cap_info & WL3501_MGMT_CAPABILITY_IBSS)) ||
714 this->net_type == IW_MODE_AUTO) {
715 if (!this->essid.el.len)
716 matchflag = 1;
717 else if (this->essid.el.len == 3 &&
718 !memcmp(this->essid.essid, "ANY", 3))
719 matchflag = 1;
720 else if (this->essid.el.len != sig.ssid.el.len)
721 matchflag = 0;
722 else if (memcmp(this->essid.essid, sig.ssid.essid,
723 this->essid.el.len))
724 matchflag = 0;
725 else
726 matchflag = 1;
727 if (matchflag) {
728 for (i = 0; i < this->bss_cnt; i++) {
729 if (!memcmp(this->bss_set[i].bssid,
730 sig.bssid, ETH_ALEN)) {
731 matchflag = 0;
732 break;
733 }
734 }
735 }
736 if (matchflag && (i < 20)) {
737 memcpy(&this->bss_set[i].beacon_period,
738 &sig.beacon_period, 73);
739 this->bss_cnt++;
740 this->rssi = sig.rssi;
741 }
742 }
743 } else if (sig.status == WL3501_STATUS_TIMEOUT) {
744 dprintk(3, "timeout");
745 this->join_sta_bss = 0;
746 for (i = this->join_sta_bss; i < this->bss_cnt; i++)
747 if (!wl3501_mgmt_join(this, i))
748 break;
749 this->join_sta_bss = i;
750 if (this->join_sta_bss == this->bss_cnt) {
751 if (this->net_type == IW_MODE_INFRA)
752 wl3501_mgmt_scan(this, 100);
753 else {
754 this->adhoc_times++;
755 if (this->adhoc_times > WL3501_MAX_ADHOC_TRIES)
756 wl3501_mgmt_start(this);
757 else
758 wl3501_mgmt_scan(this, 100);
759 }
760 }
761 }
762 }
763
764 /**
765 * wl3501_block_interrupt - Mask interrupt from SUTRO
766 * @this - card
767 *
768 * Mask interrupt from SUTRO. (i.e. SUTRO cannot interrupt the HOST)
769 * Return: 1 if interrupt is originally enabled
770 */
771 static int wl3501_block_interrupt(struct wl3501_card *this)
772 {
773 u8 old = inb(this->base_addr + WL3501_NIC_GCR);
774 u8 new = old & (~(WL3501_GCR_ECINT | WL3501_GCR_INT2EC |
775 WL3501_GCR_ENECINT));
776
777 wl3501_outb(new, this->base_addr + WL3501_NIC_GCR);
778 return old & WL3501_GCR_ENECINT;
779 }
780
781 /**
782 * wl3501_unblock_interrupt - Enable interrupt from SUTRO
783 * @this - card
784 *
785 * Enable interrupt from SUTRO. (i.e. SUTRO can interrupt the HOST)
786 * Return: 1 if interrupt is originally enabled
787 */
788 static int wl3501_unblock_interrupt(struct wl3501_card *this)
789 {
790 u8 old = inb(this->base_addr + WL3501_NIC_GCR);
791 u8 new = (old & ~(WL3501_GCR_ECINT | WL3501_GCR_INT2EC)) |
792 WL3501_GCR_ENECINT;
793
794 wl3501_outb(new, this->base_addr + WL3501_NIC_GCR);
795 return old & WL3501_GCR_ENECINT;
796 }
797
798 /**
799 * wl3501_receive - Receive data from Receive Queue.
800 *
801 * Receive data from Receive Queue.
802 *
803 * @this: card
804 * @bf: address of host
805 * @size: size of buffer.
806 */
807 static u16 wl3501_receive(struct wl3501_card *this, u8 *bf, u16 size)
808 {
809 u16 next_addr, next_addr1;
810 u8 *data = bf + 12;
811
812 size -= 12;
813 wl3501_get_from_wla(this, this->start_seg + 2,
814 &next_addr, sizeof(next_addr));
815 if (size > WL3501_BLKSZ - sizeof(struct wl3501_rx_hdr)) {
816 wl3501_get_from_wla(this,
817 this->start_seg +
818 sizeof(struct wl3501_rx_hdr), data,
819 WL3501_BLKSZ -
820 sizeof(struct wl3501_rx_hdr));
821 size -= WL3501_BLKSZ - sizeof(struct wl3501_rx_hdr);
822 data += WL3501_BLKSZ - sizeof(struct wl3501_rx_hdr);
823 } else {
824 wl3501_get_from_wla(this,
825 this->start_seg +
826 sizeof(struct wl3501_rx_hdr),
827 data, size);
828 size = 0;
829 }
830 while (size > 0) {
831 if (size > WL3501_BLKSZ - 5) {
832 wl3501_get_from_wla(this, next_addr + 5, data,
833 WL3501_BLKSZ - 5);
834 size -= WL3501_BLKSZ - 5;
835 data += WL3501_BLKSZ - 5;
836 wl3501_get_from_wla(this, next_addr + 2, &next_addr1,
837 sizeof(next_addr1));
838 next_addr = next_addr1;
839 } else {
840 wl3501_get_from_wla(this, next_addr + 5, data, size);
841 size = 0;
842 }
843 }
844 return 0;
845 }
846
847 static void wl3501_esbq_req_free(struct wl3501_card *this)
848 {
849 u8 tmp;
850 u16 addr;
851
852 if (this->esbq_req_head == this->esbq_req_tail)
853 goto out;
854 wl3501_get_from_wla(this, this->esbq_req_tail + 3, &tmp, sizeof(tmp));
855 if (!(tmp & 0x80))
856 goto out;
857 wl3501_get_from_wla(this, this->esbq_req_tail, &addr, sizeof(addr));
858 wl3501_free_tx_buffer(this, addr);
859 this->esbq_req_tail += 4;
860 if (this->esbq_req_tail >= this->esbq_req_end)
861 this->esbq_req_tail = this->esbq_req_start;
862 out:
863 return;
864 }
865
866 static int wl3501_esbq_confirm(struct wl3501_card *this)
867 {
868 u8 tmp;
869
870 wl3501_get_from_wla(this, this->esbq_confirm + 3, &tmp, sizeof(tmp));
871 return tmp & 0x80;
872 }
873
874 static void wl3501_online(struct net_device *dev)
875 {
876 struct wl3501_card *this = dev->priv;
877
878 printk(KERN_INFO "%s: Wireless LAN online. BSSID: "
879 "%02X %02X %02X %02X %02X %02X\n", dev->name,
880 this->bssid[0], this->bssid[1], this->bssid[2],
881 this->bssid[3], this->bssid[4], this->bssid[5]);
882 netif_wake_queue(dev);
883 }
884
885 static void wl3501_esbq_confirm_done(struct wl3501_card *this)
886 {
887 u8 tmp = 0;
888
889 wl3501_set_to_wla(this, this->esbq_confirm + 3, &tmp, sizeof(tmp));
890 this->esbq_confirm += 4;
891 if (this->esbq_confirm >= this->esbq_confirm_end)
892 this->esbq_confirm = this->esbq_confirm_start;
893 }
894
895 static int wl3501_mgmt_auth(struct wl3501_card *this)
896 {
897 struct wl3501_auth_req sig = {
898 .sig_id = WL3501_SIG_AUTH_REQ,
899 .type = WL3501_SYS_TYPE_OPEN,
900 .timeout = 1000,
901 };
902
903 dprintk(3, "entry");
904 memcpy(sig.mac_addr, this->bssid, ETH_ALEN);
905 return wl3501_esbq_exec(this, &sig, sizeof(sig));
906 }
907
908 static int wl3501_mgmt_association(struct wl3501_card *this)
909 {
910 struct wl3501_assoc_req sig = {
911 .sig_id = WL3501_SIG_ASSOC_REQ,
912 .timeout = 1000,
913 .listen_interval = 5,
914 .cap_info = this->cap_info,
915 };
916
917 dprintk(3, "entry");
918 memcpy(sig.mac_addr, this->bssid, ETH_ALEN);
919 return wl3501_esbq_exec(this, &sig, sizeof(sig));
920 }
921
922 static void wl3501_mgmt_join_confirm(struct net_device *dev, u16 addr)
923 {
924 struct wl3501_card *this = dev->priv;
925 struct wl3501_join_confirm sig;
926
927 dprintk(3, "entry");
928 wl3501_get_from_wla(this, addr, &sig, sizeof(sig));
929 if (sig.status == WL3501_STATUS_SUCCESS) {
930 if (this->net_type == IW_MODE_INFRA) {
931 if (this->join_sta_bss < this->bss_cnt) {
932 const int i = this->join_sta_bss;
933 memcpy(this->bssid,
934 this->bss_set[i].bssid, ETH_ALEN);
935 this->chan = this->bss_set[i].ds_pset.chan;
936 iw_copy_mgmt_info_element(&this->keep_essid.el,
937 &this->bss_set[i].ssid.el);
938 wl3501_mgmt_auth(this);
939 }
940 } else {
941 const int i = this->join_sta_bss;
942
943 memcpy(&this->bssid, &this->bss_set[i].bssid, ETH_ALEN);
944 this->chan = this->bss_set[i].ds_pset.chan;
945 iw_copy_mgmt_info_element(&this->keep_essid.el,
946 &this->bss_set[i].ssid.el);
947 wl3501_online(dev);
948 }
949 } else {
950 int i;
951 this->join_sta_bss++;
952 for (i = this->join_sta_bss; i < this->bss_cnt; i++)
953 if (!wl3501_mgmt_join(this, i))
954 break;
955 this->join_sta_bss = i;
956 if (this->join_sta_bss == this->bss_cnt) {
957 if (this->net_type == IW_MODE_INFRA)
958 wl3501_mgmt_scan(this, 100);
959 else {
960 this->adhoc_times++;
961 if (this->adhoc_times > WL3501_MAX_ADHOC_TRIES)
962 wl3501_mgmt_start(this);
963 else
964 wl3501_mgmt_scan(this, 100);
965 }
966 }
967 }
968 }
969
970 static inline void wl3501_alarm_interrupt(struct net_device *dev,
971 struct wl3501_card *this)
972 {
973 if (this->net_type == IW_MODE_INFRA) {
974 printk(KERN_INFO "Wireless LAN offline\n");
975 netif_stop_queue(dev);
976 wl3501_mgmt_resync(this);
977 }
978 }
979
980 static inline void wl3501_md_confirm_interrupt(struct net_device *dev,
981 struct wl3501_card *this,
982 u16 addr)
983 {
984 struct wl3501_md_confirm sig;
985
986 dprintk(3, "entry");
987 wl3501_get_from_wla(this, addr, &sig, sizeof(sig));
988 wl3501_free_tx_buffer(this, sig.data);
989 if (netif_queue_stopped(dev))
990 netif_wake_queue(dev);
991 }
992
993 static inline void wl3501_md_ind_interrupt(struct net_device *dev,
994 struct wl3501_card *this, u16 addr)
995 {
996 struct wl3501_md_ind sig;
997 struct sk_buff *skb;
998 u8 rssi, addr4[ETH_ALEN];
999 u16 pkt_len;
1000
1001 wl3501_get_from_wla(this, addr, &sig, sizeof(sig));
1002 this->start_seg = sig.data;
1003 wl3501_get_from_wla(this,
1004 sig.data + offsetof(struct wl3501_rx_hdr, rssi),
1005 &rssi, sizeof(rssi));
1006 this->rssi = rssi <= 63 ? (rssi * 100) / 64 : 255;
1007
1008 wl3501_get_from_wla(this,
1009 sig.data +
1010 offsetof(struct wl3501_rx_hdr, addr4),
1011 &addr4, sizeof(addr4));
1012 if (!(addr4[0] == 0xAA && addr4[1] == 0xAA &&
1013 addr4[2] == 0x03 && addr4[4] == 0x00)) {
1014 printk(KERN_INFO "Insupported packet type!\n");
1015 return;
1016 }
1017 pkt_len = sig.size + 12 - 24 - 4 - 6;
1018
1019 skb = dev_alloc_skb(pkt_len + 5);
1020
1021 if (!skb) {
1022 printk(KERN_WARNING "%s: Can't alloc a sk_buff of size %d.\n",
1023 dev->name, pkt_len);
1024 this->stats.rx_dropped++;
1025 } else {
1026 skb->dev = dev;
1027 skb_reserve(skb, 2); /* IP headers on 16 bytes boundaries */
1028 eth_copy_and_sum(skb, (unsigned char *)&sig.daddr, 12, 0);
1029 wl3501_receive(this, skb->data, pkt_len);
1030 skb_put(skb, pkt_len);
1031 skb->protocol = eth_type_trans(skb, dev);
1032 dev->last_rx = jiffies;
1033 this->stats.rx_packets++;
1034 this->stats.rx_bytes += skb->len;
1035 netif_rx(skb);
1036 }
1037 }
1038
1039 static inline void wl3501_get_confirm_interrupt(struct wl3501_card *this,
1040 u16 addr, void *sig, int size)
1041 {
1042 dprintk(3, "entry");
1043 wl3501_get_from_wla(this, addr, &this->sig_get_confirm,
1044 sizeof(this->sig_get_confirm));
1045 wake_up(&this->wait);
1046 }
1047
1048 static inline void wl3501_start_confirm_interrupt(struct net_device *dev,
1049 struct wl3501_card *this,
1050 u16 addr)
1051 {
1052 struct wl3501_start_confirm sig;
1053
1054 dprintk(3, "entry");
1055 wl3501_get_from_wla(this, addr, &sig, sizeof(sig));
1056 if (sig.status == WL3501_STATUS_SUCCESS)
1057 netif_wake_queue(dev);
1058 }
1059
1060 static inline void wl3501_assoc_confirm_interrupt(struct net_device *dev,
1061 u16 addr)
1062 {
1063 struct wl3501_card *this = dev->priv;
1064 struct wl3501_assoc_confirm sig;
1065
1066 dprintk(3, "entry");
1067 wl3501_get_from_wla(this, addr, &sig, sizeof(sig));
1068
1069 if (sig.status == WL3501_STATUS_SUCCESS)
1070 wl3501_online(dev);
1071 }
1072
1073 static inline void wl3501_auth_confirm_interrupt(struct wl3501_card *this,
1074 u16 addr)
1075 {
1076 struct wl3501_auth_confirm sig;
1077
1078 dprintk(3, "entry");
1079 wl3501_get_from_wla(this, addr, &sig, sizeof(sig));
1080
1081 if (sig.status == WL3501_STATUS_SUCCESS)
1082 wl3501_mgmt_association(this);
1083 else
1084 wl3501_mgmt_resync(this);
1085 }
1086
1087 static inline void wl3501_rx_interrupt(struct net_device *dev)
1088 {
1089 int morepkts;
1090 u16 addr;
1091 u8 sig_id;
1092 struct wl3501_card *this = dev->priv;
1093
1094 dprintk(3, "entry");
1095 loop:
1096 morepkts = 0;
1097 if (!wl3501_esbq_confirm(this))
1098 goto free;
1099 wl3501_get_from_wla(this, this->esbq_confirm, &addr, sizeof(addr));
1100 wl3501_get_from_wla(this, addr + 2, &sig_id, sizeof(sig_id));
1101
1102 switch (sig_id) {
1103 case WL3501_SIG_DEAUTH_IND:
1104 case WL3501_SIG_DISASSOC_IND:
1105 case WL3501_SIG_ALARM:
1106 wl3501_alarm_interrupt(dev, this);
1107 break;
1108 case WL3501_SIG_MD_CONFIRM:
1109 wl3501_md_confirm_interrupt(dev, this, addr);
1110 break;
1111 case WL3501_SIG_MD_IND:
1112 wl3501_md_ind_interrupt(dev, this, addr);
1113 break;
1114 case WL3501_SIG_GET_CONFIRM:
1115 wl3501_get_confirm_interrupt(this, addr,
1116 &this->sig_get_confirm,
1117 sizeof(this->sig_get_confirm));
1118 break;
1119 case WL3501_SIG_PWR_MGMT_CONFIRM:
1120 wl3501_get_confirm_interrupt(this, addr,
1121 &this->sig_pwr_mgmt_confirm,
1122 sizeof(this->sig_pwr_mgmt_confirm));
1123 break;
1124 case WL3501_SIG_START_CONFIRM:
1125 wl3501_start_confirm_interrupt(dev, this, addr);
1126 break;
1127 case WL3501_SIG_SCAN_CONFIRM:
1128 wl3501_mgmt_scan_confirm(this, addr);
1129 break;
1130 case WL3501_SIG_JOIN_CONFIRM:
1131 wl3501_mgmt_join_confirm(dev, addr);
1132 break;
1133 case WL3501_SIG_ASSOC_CONFIRM:
1134 wl3501_assoc_confirm_interrupt(dev, addr);
1135 break;
1136 case WL3501_SIG_AUTH_CONFIRM:
1137 wl3501_auth_confirm_interrupt(this, addr);
1138 break;
1139 case WL3501_SIG_RESYNC_CONFIRM:
1140 wl3501_mgmt_resync(this); /* FIXME: should be resync_confirm */
1141 break;
1142 }
1143 wl3501_esbq_confirm_done(this);
1144 morepkts = 1;
1145 /* free request if necessary */
1146 free:
1147 wl3501_esbq_req_free(this);
1148 if (morepkts)
1149 goto loop;
1150 }
1151
1152 static inline void wl3501_ack_interrupt(struct wl3501_card *this)
1153 {
1154 wl3501_outb(WL3501_GCR_ECINT, this->base_addr + WL3501_NIC_GCR);
1155 }
1156
1157 /**
1158 * wl3501_interrupt - Hardware interrupt from card.
1159 * @irq - Interrupt number
1160 * @dev_id - net_device
1161 * @regs - registers
1162 *
1163 * We must acknowledge the interrupt as soon as possible, and block the
1164 * interrupt from the same card immediately to prevent re-entry.
1165 *
1166 * Before accessing the Control_Status_Block, we must lock SUTRO first.
1167 * On the other hand, to prevent SUTRO from malfunctioning, we must
1168 * unlock the SUTRO as soon as possible.
1169 */
1170 static irqreturn_t wl3501_interrupt(int irq, void *dev_id, struct pt_regs *regs)
1171 {
1172 struct net_device *dev = (struct net_device *)dev_id;
1173 struct wl3501_card *this;
1174 int handled = 1;
1175
1176 if (!dev)
1177 goto unknown;
1178 this = dev->priv;
1179 spin_lock(&this->lock);
1180 wl3501_ack_interrupt(this);
1181 wl3501_block_interrupt(this);
1182 wl3501_rx_interrupt(dev);
1183 wl3501_unblock_interrupt(this);
1184 spin_unlock(&this->lock);
1185 out:
1186 return IRQ_RETVAL(handled);
1187 unknown:
1188 handled = 0;
1189 printk(KERN_ERR "%s: irq %d for unknown device.\n", __FUNCTION__, irq);
1190 goto out;
1191 }
1192
1193 static int wl3501_reset_board(struct wl3501_card *this)
1194 {
1195 u8 tmp = 0;
1196 int i, rc = 0;
1197
1198 /* Coreset */
1199 wl3501_outb_p(WL3501_GCR_CORESET, this->base_addr + WL3501_NIC_GCR);
1200 wl3501_outb_p(0, this->base_addr + WL3501_NIC_GCR);
1201 wl3501_outb_p(WL3501_GCR_CORESET, this->base_addr + WL3501_NIC_GCR);
1202
1203 /* Reset SRAM 0x480 to zero */
1204 wl3501_set_to_wla(this, 0x480, &tmp, sizeof(tmp));
1205
1206 /* Start up */
1207 wl3501_outb_p(0, this->base_addr + WL3501_NIC_GCR);
1208
1209 WL3501_NOPLOOP(1024 * 50);
1210
1211 wl3501_unblock_interrupt(this); /* acme: was commented */
1212
1213 /* Polling Self_Test_Status */
1214 for (i = 0; i < 10000; i++) {
1215 wl3501_get_from_wla(this, 0x480, &tmp, sizeof(tmp));
1216
1217 if (tmp == 'W') {
1218 /* firmware complete all test successfully */
1219 tmp = 'A';
1220 wl3501_set_to_wla(this, 0x480, &tmp, sizeof(tmp));
1221 goto out;
1222 }
1223 WL3501_NOPLOOP(10);
1224 }
1225 printk(KERN_WARNING "%s: failed to reset the board!\n", __FUNCTION__);
1226 rc = -ENODEV;
1227 out:
1228 return rc;
1229 }
1230
1231 static int wl3501_init_firmware(struct wl3501_card *this)
1232 {
1233 u16 ptr, next;
1234 int rc = wl3501_reset_board(this);
1235
1236 if (rc)
1237 goto fail;
1238 this->card_name[0] = '\0';
1239 wl3501_get_from_wla(this, 0x1a00,
1240 this->card_name, sizeof(this->card_name));
1241 this->card_name[sizeof(this->card_name) - 1] = '\0';
1242 this->firmware_date[0] = '\0';
1243 wl3501_get_from_wla(this, 0x1a40,
1244 this->firmware_date, sizeof(this->firmware_date));
1245 this->firmware_date[sizeof(this->firmware_date) - 1] = '\0';
1246 /* Switch to SRAM Page 0 */
1247 wl3501_switch_page(this, WL3501_BSS_SPAGE0);
1248 /* Read parameter from card */
1249 wl3501_get_from_wla(this, 0x482, &this->esbq_req_start, 2);
1250 wl3501_get_from_wla(this, 0x486, &this->esbq_req_end, 2);
1251 wl3501_get_from_wla(this, 0x488, &this->esbq_confirm_start, 2);
1252 wl3501_get_from_wla(this, 0x48c, &this->esbq_confirm_end, 2);
1253 wl3501_get_from_wla(this, 0x48e, &this->tx_buffer_head, 2);
1254 wl3501_get_from_wla(this, 0x492, &this->tx_buffer_size, 2);
1255 this->esbq_req_tail = this->esbq_req_head = this->esbq_req_start;
1256 this->esbq_req_end += this->esbq_req_start;
1257 this->esbq_confirm = this->esbq_confirm_start;
1258 this->esbq_confirm_end += this->esbq_confirm_start;
1259 /* Initial Tx Buffer */
1260 this->tx_buffer_cnt = 1;
1261 ptr = this->tx_buffer_head;
1262 next = ptr + WL3501_BLKSZ;
1263 while ((next - this->tx_buffer_head) < this->tx_buffer_size) {
1264 this->tx_buffer_cnt++;
1265 wl3501_set_to_wla(this, ptr, &next, sizeof(next));
1266 ptr = next;
1267 next = ptr + WL3501_BLKSZ;
1268 }
1269 rc = 0;
1270 next = 0;
1271 wl3501_set_to_wla(this, ptr, &next, sizeof(next));
1272 this->tx_buffer_tail = ptr;
1273 out:
1274 return rc;
1275 fail:
1276 printk(KERN_WARNING "%s: failed!\n", __FUNCTION__);
1277 goto out;
1278 }
1279
1280 static int wl3501_close(struct net_device *dev)
1281 {
1282 struct wl3501_card *this = dev->priv;
1283 int rc = -ENODEV;
1284 unsigned long flags;
1285 dev_link_t *link;
1286
1287 spin_lock_irqsave(&this->lock, flags);
1288 /* Check if the device is in wl3501_dev_list */
1289 for (link = wl3501_dev_list; link; link = link->next)
1290 if (link->priv == dev)
1291 break;
1292 if (!link)
1293 goto out;
1294 link->open--;
1295
1296 /* Stop wl3501_hard_start_xmit() from now on */
1297 netif_stop_queue(dev);
1298 wl3501_ack_interrupt(this);
1299
1300 /* Mask interrupts from the SUTRO */
1301 wl3501_block_interrupt(this);
1302
1303 rc = 0;
1304 printk(KERN_INFO "%s: WL3501 closed\n", dev->name);
1305 out:
1306 spin_unlock_irqrestore(&this->lock, flags);
1307 return rc;
1308 }
1309
1310 /**
1311 * wl3501_reset - Reset the SUTRO.
1312 * @dev - network device
1313 *
1314 * It is almost the same as wl3501_open(). In fact, we may just wl3501_close()
1315 * and wl3501_open() again, but I wouldn't like to free_irq() when the driver
1316 * is running. It seems to be dangerous.
1317 */
1318 static int wl3501_reset(struct net_device *dev)
1319 {
1320 struct wl3501_card *this = dev->priv;
1321 int rc = -ENODEV;
1322
1323 wl3501_block_interrupt(this);
1324
1325 if (wl3501_init_firmware(this)) {
1326 printk(KERN_WARNING "%s: Can't initialize Firmware!\n",
1327 dev->name);
1328 /* Free IRQ, and mark IRQ as unused */
1329 free_irq(dev->irq, dev);
1330 goto out;
1331 }
1332
1333 /*
1334 * Queue has to be started only when the Card is Started
1335 */
1336 netif_stop_queue(dev);
1337 this->adhoc_times = 0;
1338 wl3501_ack_interrupt(this);
1339 wl3501_unblock_interrupt(this);
1340 wl3501_mgmt_scan(this, 100);
1341 dprintk(1, "%s: device reset", dev->name);
1342 rc = 0;
1343 out:
1344 return rc;
1345 }
1346
1347 static void wl3501_tx_timeout(struct net_device *dev)
1348 {
1349 struct wl3501_card *this = dev->priv;
1350 struct net_device_stats *stats = &this->stats;
1351 unsigned long flags;
1352 int rc;
1353
1354 stats->tx_errors++;
1355 spin_lock_irqsave(&this->lock, flags);
1356 rc = wl3501_reset(dev);
1357 spin_unlock_irqrestore(&this->lock, flags);
1358 if (rc)
1359 printk(KERN_ERR "%s: Error %d resetting card on Tx timeout!\n",
1360 dev->name, rc);
1361 else {
1362 dev->trans_start = jiffies;
1363 netif_wake_queue(dev);
1364 }
1365 }
1366
1367 /*
1368 * Return : 0 - OK
1369 * 1 - Could not transmit (dev_queue_xmit will queue it)
1370 * and try to sent it later
1371 */
1372 static int wl3501_hard_start_xmit(struct sk_buff *skb, struct net_device *dev)
1373 {
1374 int enabled, rc;
1375 struct wl3501_card *this = dev->priv;
1376 unsigned long flags;
1377
1378 spin_lock_irqsave(&this->lock, flags);
1379 enabled = wl3501_block_interrupt(this);
1380 dev->trans_start = jiffies;
1381 rc = wl3501_send_pkt(this, skb->data, skb->len);
1382 if (enabled)
1383 wl3501_unblock_interrupt(this);
1384 if (rc) {
1385 ++this->stats.tx_dropped;
1386 netif_stop_queue(dev);
1387 } else {
1388 ++this->stats.tx_packets;
1389 this->stats.tx_bytes += skb->len;
1390 kfree_skb(skb);
1391
1392 if (this->tx_buffer_cnt < 2)
1393 netif_stop_queue(dev);
1394 }
1395 spin_unlock_irqrestore(&this->lock, flags);
1396 return rc;
1397 }
1398
1399 static int wl3501_open(struct net_device *dev)
1400 {
1401 int rc = -ENODEV;
1402 struct wl3501_card *this = dev->priv;
1403 unsigned long flags;
1404 dev_link_t *link;
1405
1406 spin_lock_irqsave(&this->lock, flags);
1407 /* Check if the device is in wl3501_dev_list */
1408 for (link = wl3501_dev_list; link; link = link->next)
1409 if (link->priv == dev)
1410 break;
1411 if (!DEV_OK(link))
1412 goto out;
1413 netif_device_attach(dev);
1414 link->open++;
1415
1416 /* Initial WL3501 firmware */
1417 dprintk(1, "%s: Initialize WL3501 firmware...", dev->name);
1418 if (wl3501_init_firmware(this))
1419 goto fail;
1420 /* Initial device variables */
1421 this->adhoc_times = 0;
1422 /* Acknowledge Interrupt, for cleaning last state */
1423 wl3501_ack_interrupt(this);
1424
1425 /* Enable interrupt from card after all */
1426 wl3501_unblock_interrupt(this);
1427 wl3501_mgmt_scan(this, 100);
1428 rc = 0;
1429 dprintk(1, "%s: WL3501 opened", dev->name);
1430 printk(KERN_INFO "%s: Card Name: %s\n"
1431 "%s: Firmware Date: %s\n",
1432 dev->name, this->card_name,
1433 dev->name, this->firmware_date);
1434 out:
1435 spin_unlock_irqrestore(&this->lock, flags);
1436 return rc;
1437 fail:
1438 printk(KERN_WARNING "%s: Can't initialize firmware!\n", dev->name);
1439 goto out;
1440 }
1441
1442 struct net_device_stats *wl3501_get_stats(struct net_device *dev)
1443 {
1444 struct wl3501_card *this = dev->priv;
1445
1446 return &this->stats;
1447 }
1448
1449 struct iw_statistics *wl3501_get_wireless_stats(struct net_device *dev)
1450 {
1451 struct wl3501_card *this = dev->priv;
1452 struct iw_statistics *wstats = &this->wstats;
1453 u32 value; /* size checked: it is u32 */
1454
1455 memset(wstats, 0, sizeof(*wstats));
1456 wstats->status = netif_running(dev);
1457 if (!wl3501_get_mib_value(this, WL3501_MIB_ATTR_WEP_ICV_ERROR_COUNT,
1458 &value, sizeof(value)))
1459 wstats->discard.code += value;
1460 if (!wl3501_get_mib_value(this, WL3501_MIB_ATTR_WEP_UNDECRYPTABLE_COUNT,
1461 &value, sizeof(value)))
1462 wstats->discard.code += value;
1463 if (!wl3501_get_mib_value(this, WL3501_MIB_ATTR_WEP_EXCLUDED_COUNT,
1464 &value, sizeof(value)))
1465 wstats->discard.code += value;
1466 if (!wl3501_get_mib_value(this, WL3501_MIB_ATTR_RETRY_COUNT,
1467 &value, sizeof(value)))
1468 wstats->discard.retries = value;
1469 if (!wl3501_get_mib_value(this, WL3501_MIB_ATTR_FAILED_COUNT,
1470 &value, sizeof(value)))
1471 wstats->discard.misc += value;
1472 if (!wl3501_get_mib_value(this, WL3501_MIB_ATTR_RTS_FAILURE_COUNT,
1473 &value, sizeof(value)))
1474 wstats->discard.misc += value;
1475 if (!wl3501_get_mib_value(this, WL3501_MIB_ATTR_ACK_FAILURE_COUNT,
1476 &value, sizeof(value)))
1477 wstats->discard.misc += value;
1478 if (!wl3501_get_mib_value(this, WL3501_MIB_ATTR_FRAME_DUPLICATE_COUNT,
1479 &value, sizeof(value)))
1480 wstats->discard.misc += value;
1481 return wstats;
1482 }
1483
1484 static void wl3501_get_drvinfo(struct net_device *dev, struct ethtool_drvinfo *info)
1485 {
1486 strlcpy(info->driver, wl3501_dev_info, sizeof(info->driver));
1487 }
1488
1489 static struct ethtool_ops ops = {
1490 .get_drvinfo = wl3501_get_drvinfo
1491 };
1492
1493 /**
1494 * wl3501_detach - deletes a driver "instance"
1495 * @link - FILL_IN
1496 *
1497 * This deletes a driver "instance". The device is de-registered with Card
1498 * Services. If it has been released, all local data structures are freed.
1499 * Otherwise, the structures will be freed when the device is released.
1500 */
1501 static void wl3501_detach(dev_link_t *link)
1502 {
1503 dev_link_t **linkp;
1504
1505 /* Locate device structure */
1506 for (linkp = &wl3501_dev_list; *linkp; linkp = &(*linkp)->next)
1507 if (*linkp == link)
1508 break;
1509 if (!*linkp)
1510 goto out;
1511
1512 /* If the device is currently configured and active, we won't actually
1513 * delete it yet. Instead, it is marked so that when the release()
1514 * function is called, that will trigger a proper detach(). */
1515
1516 if (link->state & DEV_CONFIG) {
1517 #ifdef PCMCIA_DEBUG
1518 printk(KERN_DEBUG "wl3501_cs: detach postponed, '%s' "
1519 "still locked\n", link->dev->dev_name);
1520 #endif
1521 goto out;
1522 }
1523
1524 /* Break the link with Card Services */
1525 if (link->handle)
1526 pcmcia_deregister_client(link->handle);
1527
1528 /* Unlink device structure, free pieces */
1529 *linkp = link->next;
1530
1531 if (link->priv)
1532 free_netdev(link->priv);
1533 kfree(link);
1534 out:
1535 return;
1536 }
1537
1538 static int wl3501_get_name(struct net_device *dev, struct iw_request_info *info,
1539 union iwreq_data *wrqu, char *extra)
1540 {
1541 strlcpy(wrqu->name, "IEEE 802.11-DS", sizeof(wrqu->name));
1542 return 0;
1543 }
1544
1545 static int wl3501_set_freq(struct net_device *dev, struct iw_request_info *info,
1546 union iwreq_data *wrqu, char *extra)
1547 {
1548 struct wl3501_card *this = dev->priv;
1549 int channel = wrqu->freq.m;
1550 int rc = -EINVAL;
1551
1552 if (iw_valid_channel(this->reg_domain, channel)) {
1553 this->chan = channel;
1554 rc = wl3501_reset(dev);
1555 }
1556 return rc;
1557 }
1558
1559 static int wl3501_get_freq(struct net_device *dev, struct iw_request_info *info,
1560 union iwreq_data *wrqu, char *extra)
1561 {
1562 struct wl3501_card *this = dev->priv;
1563
1564 wrqu->freq.m = wl3501_chan2freq[this->chan - 1] * 100000;
1565 wrqu->freq.e = 1;
1566 return 0;
1567 }
1568
1569 static int wl3501_set_mode(struct net_device *dev, struct iw_request_info *info,
1570 union iwreq_data *wrqu, char *extra)
1571 {
1572 int rc = -EINVAL;
1573
1574 if (wrqu->mode == IW_MODE_INFRA ||
1575 wrqu->mode == IW_MODE_ADHOC ||
1576 wrqu->mode == IW_MODE_AUTO) {
1577 struct wl3501_card *this = dev->priv;
1578
1579 this->net_type = wrqu->mode;
1580 rc = wl3501_reset(dev);
1581 }
1582 return rc;
1583 }
1584
1585 static int wl3501_get_mode(struct net_device *dev, struct iw_request_info *info,
1586 union iwreq_data *wrqu, char *extra)
1587 {
1588 struct wl3501_card *this = dev->priv;
1589
1590 wrqu->mode = this->net_type;
1591 return 0;
1592 }
1593
1594 static int wl3501_get_sens(struct net_device *dev, struct iw_request_info *info,
1595 union iwreq_data *wrqu, char *extra)
1596 {
1597 struct wl3501_card *this = dev->priv;
1598
1599 wrqu->sens.value = this->rssi;
1600 wrqu->sens.disabled = !wrqu->sens.value;
1601 wrqu->sens.fixed = 1;
1602 return 0;
1603 }
1604
1605 static int wl3501_get_range(struct net_device *dev,
1606 struct iw_request_info *info,
1607 union iwreq_data *wrqu, char *extra)
1608 {
1609 struct iw_range *range = (struct iw_range *)extra;
1610
1611 /* Set the length (very important for backward compatibility) */
1612 wrqu->data.length = sizeof(*range);
1613
1614 /* Set all the info we don't care or don't know about to zero */
1615 memset(range, 0, sizeof(*range));
1616
1617 /* Set the Wireless Extension versions */
1618 range->we_version_compiled = WIRELESS_EXT;
1619 range->we_version_source = 1;
1620 range->throughput = 2 * 1000 * 1000; /* ~2 Mb/s */
1621 /* FIXME: study the code to fill in more fields... */
1622 return 0;
1623 }
1624
1625 static int wl3501_set_wap(struct net_device *dev, struct iw_request_info *info,
1626 union iwreq_data *wrqu, char *extra)
1627 {
1628 struct wl3501_card *this = dev->priv;
1629 static const u8 bcast[ETH_ALEN] = { 255, 255, 255, 255, 255, 255 };
1630 int rc = -EINVAL;
1631
1632 /* FIXME: we support other ARPHRDs...*/
1633 if (wrqu->ap_addr.sa_family != ARPHRD_ETHER)
1634 goto out;
1635 if (!memcmp(bcast, wrqu->ap_addr.sa_data, ETH_ALEN)) {
1636 /* FIXME: rescan? */
1637 } else
1638 memcpy(this->bssid, wrqu->ap_addr.sa_data, ETH_ALEN);
1639 /* FIXME: rescan? deassoc & scan? */
1640 rc = 0;
1641 out:
1642 return rc;
1643 }
1644
1645 static int wl3501_get_wap(struct net_device *dev, struct iw_request_info *info,
1646 union iwreq_data *wrqu, char *extra)
1647 {
1648 struct wl3501_card *this = dev->priv;
1649
1650 wrqu->ap_addr.sa_family = ARPHRD_ETHER;
1651 memcpy(wrqu->ap_addr.sa_data, this->bssid, ETH_ALEN);
1652 return 0;
1653 }
1654
1655 static int wl3501_set_scan(struct net_device *dev, struct iw_request_info *info,
1656 union iwreq_data *wrqu, char *extra)
1657 {
1658 /*
1659 * FIXME: trigger scanning with a reset, yes, I'm lazy
1660 */
1661 return wl3501_reset(dev);
1662 }
1663
1664 static int wl3501_get_scan(struct net_device *dev, struct iw_request_info *info,
1665 union iwreq_data *wrqu, char *extra)
1666 {
1667 struct wl3501_card *this = dev->priv;
1668 int i;
1669 char *current_ev = extra;
1670 struct iw_event iwe;
1671
1672 for (i = 0; i < this->bss_cnt; ++i) {
1673 iwe.cmd = SIOCGIWAP;
1674 iwe.u.ap_addr.sa_family = ARPHRD_ETHER;
1675 memcpy(iwe.u.ap_addr.sa_data, this->bss_set[i].bssid, ETH_ALEN);
1676 current_ev = iwe_stream_add_event(current_ev,
1677 extra + IW_SCAN_MAX_DATA,
1678 &iwe, IW_EV_ADDR_LEN);
1679 iwe.cmd = SIOCGIWESSID;
1680 iwe.u.data.flags = 1;
1681 iwe.u.data.length = this->bss_set[i].ssid.el.len;
1682 current_ev = iwe_stream_add_point(current_ev,
1683 extra + IW_SCAN_MAX_DATA,
1684 &iwe,
1685 this->bss_set[i].ssid.essid);
1686 iwe.cmd = SIOCGIWMODE;
1687 iwe.u.mode = this->bss_set[i].bss_type;
1688 current_ev = iwe_stream_add_event(current_ev,
1689 extra + IW_SCAN_MAX_DATA,
1690 &iwe, IW_EV_UINT_LEN);
1691 iwe.cmd = SIOCGIWFREQ;
1692 iwe.u.freq.m = this->bss_set[i].ds_pset.chan;
1693 iwe.u.freq.e = 0;
1694 current_ev = iwe_stream_add_event(current_ev,
1695 extra + IW_SCAN_MAX_DATA,
1696 &iwe, IW_EV_FREQ_LEN);
1697 iwe.cmd = SIOCGIWENCODE;
1698 if (this->bss_set[i].cap_info & WL3501_MGMT_CAPABILITY_PRIVACY)
1699 iwe.u.data.flags = IW_ENCODE_ENABLED | IW_ENCODE_NOKEY;
1700 else
1701 iwe.u.data.flags = IW_ENCODE_DISABLED;
1702 iwe.u.data.length = 0;
1703 current_ev = iwe_stream_add_point(current_ev,
1704 extra + IW_SCAN_MAX_DATA,
1705 &iwe, NULL);
1706 }
1707 /* Length of data */
1708 wrqu->data.length = (current_ev - extra);
1709 wrqu->data.flags = 0; /* FIXME: set properly these flags */
1710 return 0;
1711 }
1712
1713 static int wl3501_set_essid(struct net_device *dev,
1714 struct iw_request_info *info,
1715 union iwreq_data *wrqu, char *extra)
1716 {
1717 struct wl3501_card *this = dev->priv;
1718
1719 if (wrqu->data.flags) {
1720 iw_set_mgmt_info_element(IW_MGMT_INFO_ELEMENT_SSID,
1721 &this->essid.el,
1722 extra, wrqu->data.length);
1723 } else { /* We accept any ESSID */
1724 iw_set_mgmt_info_element(IW_MGMT_INFO_ELEMENT_SSID,
1725 &this->essid.el, "ANY", 3);
1726 }
1727 return wl3501_reset(dev);
1728 }
1729
1730 static int wl3501_get_essid(struct net_device *dev,
1731 struct iw_request_info *info,
1732 union iwreq_data *wrqu, char *extra)
1733 {
1734 struct wl3501_card *this = dev->priv;
1735 unsigned long flags;
1736
1737 spin_lock_irqsave(&this->lock, flags);
1738 wrqu->essid.flags = 1;
1739 wrqu->essid.length = this->essid.el.len;
1740 memcpy(extra, this->essid.essid, this->essid.el.len);
1741 spin_unlock_irqrestore(&this->lock, flags);
1742 return 0;
1743 }
1744
1745 static int wl3501_set_nick(struct net_device *dev, struct iw_request_info *info,
1746 union iwreq_data *wrqu, char *extra)
1747 {
1748 struct wl3501_card *this = dev->priv;
1749
1750 if (wrqu->data.length > sizeof(this->nick))
1751 return -E2BIG;
1752 strlcpy(this->nick, extra, wrqu->data.length);
1753 return 0;
1754 }
1755
1756 static int wl3501_get_nick(struct net_device *dev, struct iw_request_info *info,
1757 union iwreq_data *wrqu, char *extra)
1758 {
1759 struct wl3501_card *this = dev->priv;
1760
1761 strlcpy(extra, this->nick, 32);
1762 wrqu->data.length = strlen(extra);
1763 return 0;
1764 }
1765
1766 static int wl3501_get_rate(struct net_device *dev, struct iw_request_info *info,
1767 union iwreq_data *wrqu, char *extra)
1768 {
1769 /*
1770 * FIXME: have to see from where to get this info, perhaps this card
1771 * works at 1 Mbit/s too... for now leave at 2 Mbit/s that is the most
1772 * common with the Planet Access Points. -acme
1773 */
1774 wrqu->bitrate.value = 2000000;
1775 wrqu->bitrate.fixed = 1;
1776 return 0;
1777 }
1778
1779 static int wl3501_get_rts_threshold(struct net_device *dev,
1780 struct iw_request_info *info,
1781 union iwreq_data *wrqu, char *extra)
1782 {
1783 u16 threshold; /* size checked: it is u16 */
1784 struct wl3501_card *this = dev->priv;
1785 int rc = wl3501_get_mib_value(this, WL3501_MIB_ATTR_RTS_THRESHOLD,
1786 &threshold, sizeof(threshold));
1787 if (!rc) {
1788 wrqu->rts.value = threshold;
1789 wrqu->rts.disabled = threshold >= 2347;
1790 wrqu->rts.fixed = 1;
1791 }
1792 return rc;
1793 }
1794
1795 static int wl3501_get_frag_threshold(struct net_device *dev,
1796 struct iw_request_info *info,
1797 union iwreq_data *wrqu, char *extra)
1798 {
1799 u16 threshold; /* size checked: it is u16 */
1800 struct wl3501_card *this = dev->priv;
1801 int rc = wl3501_get_mib_value(this, WL3501_MIB_ATTR_FRAG_THRESHOLD,
1802 &threshold, sizeof(threshold));
1803 if (!rc) {
1804 wrqu->frag.value = threshold;
1805 wrqu->frag.disabled = threshold >= 2346;
1806 wrqu->frag.fixed = 1;
1807 }
1808 return rc;
1809 }
1810
1811 static int wl3501_get_txpow(struct net_device *dev,
1812 struct iw_request_info *info,
1813 union iwreq_data *wrqu, char *extra)
1814 {
1815 u16 txpow;
1816 struct wl3501_card *this = dev->priv;
1817 int rc = wl3501_get_mib_value(this,
1818 WL3501_MIB_ATTR_CURRENT_TX_PWR_LEVEL,
1819 &txpow, sizeof(txpow));
1820 if (!rc) {
1821 wrqu->txpower.value = txpow;
1822 wrqu->txpower.disabled = 0;
1823 /*
1824 * From the MIB values I think this can be configurable,
1825 * as it lists several tx power levels -acme
1826 */
1827 wrqu->txpower.fixed = 0;
1828 wrqu->txpower.flags = IW_TXPOW_MWATT;
1829 }
1830 return rc;
1831 }
1832
1833 static int wl3501_get_retry(struct net_device *dev,
1834 struct iw_request_info *info,
1835 union iwreq_data *wrqu, char *extra)
1836 {
1837 u8 retry; /* size checked: it is u8 */
1838 struct wl3501_card *this = dev->priv;
1839 int rc = wl3501_get_mib_value(this,
1840 WL3501_MIB_ATTR_LONG_RETRY_LIMIT,
1841 &retry, sizeof(retry));
1842 if (rc)
1843 goto out;
1844 if (wrqu->retry.flags & IW_RETRY_MAX) {
1845 wrqu->retry.flags = IW_RETRY_LIMIT | IW_RETRY_MAX;
1846 goto set_value;
1847 }
1848 rc = wl3501_get_mib_value(this, WL3501_MIB_ATTR_SHORT_RETRY_LIMIT,
1849 &retry, sizeof(retry));
1850 if (rc)
1851 goto out;
1852 wrqu->retry.flags = IW_RETRY_LIMIT | IW_RETRY_MIN;
1853 set_value:
1854 wrqu->retry.value = retry;
1855 wrqu->retry.disabled = 0;
1856 out:
1857 return rc;
1858 }
1859
1860 static int wl3501_get_encode(struct net_device *dev,
1861 struct iw_request_info *info,
1862 union iwreq_data *wrqu, char *extra)
1863 {
1864 u8 implemented, restricted, keys[100], len_keys, tocopy;
1865 struct wl3501_card *this = dev->priv;
1866 int rc = wl3501_get_mib_value(this,
1867 WL3501_MIB_ATTR_PRIV_OPT_IMPLEMENTED,
1868 &implemented, sizeof(implemented));
1869 if (rc)
1870 goto out;
1871 if (!implemented) {
1872 wrqu->encoding.flags = IW_ENCODE_DISABLED;
1873 goto out;
1874 }
1875 rc = wl3501_get_mib_value(this, WL3501_MIB_ATTR_EXCLUDE_UNENCRYPTED,
1876 &restricted, sizeof(restricted));
1877 if (rc)
1878 goto out;
1879 wrqu->encoding.flags = restricted ? IW_ENCODE_RESTRICTED :
1880 IW_ENCODE_OPEN;
1881 rc = wl3501_get_mib_value(this, WL3501_MIB_ATTR_WEP_KEY_MAPPINGS_LEN,
1882 &len_keys, sizeof(len_keys));
1883 if (rc)
1884 goto out;
1885 rc = wl3501_get_mib_value(this, WL3501_MIB_ATTR_WEP_KEY_MAPPINGS,
1886 keys, len_keys);
1887 if (rc)
1888 goto out;
1889 tocopy = min_t(u8, len_keys, wrqu->encoding.length);
1890 tocopy = min_t(u8, tocopy, 100);
1891 wrqu->encoding.length = tocopy;
1892 memset(extra, 0, tocopy);
1893 memcpy(extra, keys, tocopy);
1894 out:
1895 return rc;
1896 }
1897
1898 static int wl3501_get_power(struct net_device *dev,
1899 struct iw_request_info *info,
1900 union iwreq_data *wrqu, char *extra)
1901 {
1902 u8 pwr_state;
1903 struct wl3501_card *this = dev->priv;
1904 int rc = wl3501_get_mib_value(this,
1905 WL3501_MIB_ATTR_CURRENT_PWR_STATE,
1906 &pwr_state, sizeof(pwr_state));
1907 if (rc)
1908 goto out;
1909 wrqu->power.disabled = !pwr_state;
1910 wrqu->power.flags = IW_POWER_ON;
1911 out:
1912 return rc;
1913 }
1914
1915 static const iw_handler wl3501_handler[] = {
1916 [SIOCGIWNAME - SIOCIWFIRST] = wl3501_get_name,
1917 [SIOCSIWFREQ - SIOCIWFIRST] = wl3501_set_freq,
1918 [SIOCGIWFREQ - SIOCIWFIRST] = wl3501_get_freq,
1919 [SIOCSIWMODE - SIOCIWFIRST] = wl3501_set_mode,
1920 [SIOCGIWMODE - SIOCIWFIRST] = wl3501_get_mode,
1921 [SIOCGIWSENS - SIOCIWFIRST] = wl3501_get_sens,
1922 [SIOCGIWRANGE - SIOCIWFIRST] = wl3501_get_range,
1923 [SIOCSIWSPY - SIOCIWFIRST] = iw_handler_set_spy,
1924 [SIOCGIWSPY - SIOCIWFIRST] = iw_handler_get_spy,
1925 [SIOCSIWTHRSPY - SIOCIWFIRST] = iw_handler_set_thrspy,
1926 [SIOCGIWTHRSPY - SIOCIWFIRST] = iw_handler_get_thrspy,
1927 [SIOCSIWAP - SIOCIWFIRST] = wl3501_set_wap,
1928 [SIOCGIWAP - SIOCIWFIRST] = wl3501_get_wap,
1929 [SIOCSIWSCAN - SIOCIWFIRST] = wl3501_set_scan,
1930 [SIOCGIWSCAN - SIOCIWFIRST] = wl3501_get_scan,
1931 [SIOCSIWESSID - SIOCIWFIRST] = wl3501_set_essid,
1932 [SIOCGIWESSID - SIOCIWFIRST] = wl3501_get_essid,
1933 [SIOCSIWNICKN - SIOCIWFIRST] = wl3501_set_nick,
1934 [SIOCGIWNICKN - SIOCIWFIRST] = wl3501_get_nick,
1935 [SIOCGIWRATE - SIOCIWFIRST] = wl3501_get_rate,
1936 [SIOCGIWRTS - SIOCIWFIRST] = wl3501_get_rts_threshold,
1937 [SIOCGIWFRAG - SIOCIWFIRST] = wl3501_get_frag_threshold,
1938 [SIOCGIWTXPOW - SIOCIWFIRST] = wl3501_get_txpow,
1939 [SIOCGIWRETRY - SIOCIWFIRST] = wl3501_get_retry,
1940 [SIOCGIWENCODE - SIOCIWFIRST] = wl3501_get_encode,
1941 [SIOCGIWPOWER - SIOCIWFIRST] = wl3501_get_power,
1942 };
1943
1944 static const struct iw_handler_def wl3501_handler_def = {
1945 .num_standard = sizeof(wl3501_handler) / sizeof(iw_handler),
1946 .standard = (iw_handler *)wl3501_handler,
1947 .spy_offset = offsetof(struct wl3501_card, spy_data),
1948 };
1949
1950 /**
1951 * wl3501_attach - creates an "instance" of the driver
1952 *
1953 * Creates an "instance" of the driver, allocating local data structures for
1954 * one device. The device is registered with Card Services.
1955 *
1956 * The dev_link structure is initialized, but we don't actually configure the
1957 * card at this point -- we wait until we receive a card insertion event.
1958 */
1959 static dev_link_t *wl3501_attach(void)
1960 {
1961 client_reg_t client_reg;
1962 dev_link_t *link;
1963 struct net_device *dev;
1964 int ret;
1965
1966 /* Initialize the dev_link_t structure */
1967 link = kmalloc(sizeof(*link), GFP_KERNEL);
1968 if (!link)
1969 goto out;
1970 memset(link, 0, sizeof(struct dev_link_t));
1971
1972 /* The io structure describes IO port mapping */
1973 link->io.NumPorts1 = 16;
1974 link->io.Attributes1 = IO_DATA_PATH_WIDTH_8;
1975 link->io.IOAddrLines = 5;
1976
1977 /* Interrupt setup */
1978 link->irq.Attributes = IRQ_TYPE_EXCLUSIVE | IRQ_HANDLE_PRESENT;
1979 link->irq.IRQInfo1 = IRQ_LEVEL_ID;
1980 link->irq.Handler = wl3501_interrupt;
1981
1982 /* General socket configuration */
1983 link->conf.Attributes = CONF_ENABLE_IRQ;
1984 link->conf.Vcc = 50;
1985 link->conf.IntType = INT_MEMORY_AND_IO;
1986 link->conf.ConfigIndex = 1;
1987 link->conf.Present = PRESENT_OPTION;
1988
1989 dev = alloc_etherdev(sizeof(struct wl3501_card));
1990 if (!dev)
1991 goto out_link;
1992 dev->open = wl3501_open;
1993 dev->stop = wl3501_close;
1994 dev->hard_start_xmit = wl3501_hard_start_xmit;
1995 dev->tx_timeout = wl3501_tx_timeout;
1996 dev->watchdog_timeo = 5 * HZ;
1997 dev->get_stats = wl3501_get_stats;
1998 dev->get_wireless_stats = wl3501_get_wireless_stats;
1999 dev->wireless_handlers = (struct iw_handler_def *)&wl3501_handler_def;
2000 SET_ETHTOOL_OPS(dev, &ops);
2001 netif_stop_queue(dev);
2002 link->priv = link->irq.Instance = dev;
2003
2004 /* Register with Card Services */
2005 link->next = wl3501_dev_list;
2006 wl3501_dev_list = link;
2007 client_reg.dev_info = &wl3501_dev_info;
2008 client_reg.EventMask = CS_EVENT_CARD_INSERTION |
2009 CS_EVENT_RESET_PHYSICAL |
2010 CS_EVENT_CARD_RESET |
2011 CS_EVENT_CARD_REMOVAL |
2012 CS_EVENT_PM_SUSPEND |
2013 CS_EVENT_PM_RESUME;
2014 client_reg.event_handler = wl3501_event;
2015 client_reg.Version = 0x0210;
2016 client_reg.event_callback_args.client_data = link;
2017 ret = pcmcia_register_client(&link->handle, &client_reg);
2018 if (ret) {
2019 cs_error(link->handle, RegisterClient, ret);
2020 wl3501_detach(link);
2021 link = NULL;
2022 }
2023 out:
2024 return link;
2025 out_link:
2026 kfree(link);
2027 link = NULL;
2028 goto out;
2029 }
2030
2031 #define CS_CHECK(fn, ret) \
2032 do { last_fn = (fn); if ((last_ret = (ret)) != 0) goto cs_failed; } while (0)
2033
2034 /**
2035 * wl3501_config - configure the PCMCIA socket and make eth device available
2036 * @link - FILL_IN
2037 *
2038 * wl3501_config() is scheduled to run after a CARD_INSERTION event is
2039 * received, to configure the PCMCIA socket, and to make the ethernet device
2040 * available to the system.
2041 */
2042 static void wl3501_config(dev_link_t *link)
2043 {
2044 tuple_t tuple;
2045 cisparse_t parse;
2046 client_handle_t handle = link->handle;
2047 struct net_device *dev = link->priv;
2048 int i = 0, j, last_fn, last_ret;
2049 unsigned char bf[64];
2050 struct wl3501_card *this;
2051
2052 /* This reads the card's CONFIG tuple to find its config registers. */
2053 tuple.Attributes = 0;
2054 tuple.DesiredTuple = CISTPL_CONFIG;
2055 CS_CHECK(GetFirstTuple, pcmcia_get_first_tuple(handle, &tuple));
2056 tuple.TupleData = bf;
2057 tuple.TupleDataMax = sizeof(bf);
2058 tuple.TupleOffset = 0;
2059 CS_CHECK(GetTupleData, pcmcia_get_tuple_data(handle, &tuple));
2060 CS_CHECK(ParseTuple, pcmcia_parse_tuple(handle, &tuple, &parse));
2061 link->conf.ConfigBase = parse.config.base;
2062 link->conf.Present = parse.config.rmask[0];
2063
2064 /* Configure card */
2065 link->state |= DEV_CONFIG;
2066
2067 /* Try allocating IO ports. This tries a few fixed addresses. If you
2068 * want, you can also read the card's config table to pick addresses --
2069 * see the serial driver for an example. */
2070
2071 for (j = 0x280; j < 0x400; j += 0x20) {
2072 /* The '^0x300' is so that we probe 0x300-0x3ff first, then
2073 * 0x200-0x2ff, and so on, because this seems safer */
2074 link->io.BasePort1 = j;
2075 link->io.BasePort2 = link->io.BasePort1 + 0x10;
2076 i = pcmcia_request_io(link->handle, &link->io);
2077 if (i == CS_SUCCESS)
2078 break;
2079 }
2080 if (i != CS_SUCCESS) {
2081 cs_error(link->handle, RequestIO, i);
2082 goto failed;
2083 }
2084
2085 /* Now allocate an interrupt line. Note that this does not actually
2086 * assign a handler to the interrupt. */
2087
2088 CS_CHECK(RequestIRQ, pcmcia_request_irq(link->handle, &link->irq));
2089
2090 /* This actually configures the PCMCIA socket -- setting up the I/O
2091 * windows and the interrupt mapping. */
2092
2093 CS_CHECK(RequestConfiguration, pcmcia_request_configuration(link->handle, &link->conf));
2094
2095 dev->irq = link->irq.AssignedIRQ;
2096 dev->base_addr = link->io.BasePort1;
2097 SET_NETDEV_DEV(dev, &handle_to_dev(handle));
2098 if (register_netdev(dev)) {
2099 printk(KERN_NOTICE "wl3501_cs: register_netdev() failed\n");
2100 goto failed;
2101 }
2102
2103 SET_MODULE_OWNER(dev);
2104
2105 this = dev->priv;
2106 /*
2107 * At this point, the dev_node_t structure(s) should be initialized and
2108 * arranged in a linked list at link->dev.
2109 */
2110 link->dev = &this->node;
2111 link->state &= ~DEV_CONFIG_PENDING;
2112
2113 this->base_addr = dev->base_addr;
2114
2115 if (!wl3501_get_flash_mac_addr(this)) {
2116 printk(KERN_WARNING "%s: Cant read MAC addr in flash ROM?\n",
2117 dev->name);
2118 goto failed;
2119 }
2120 strcpy(this->node.dev_name, dev->name);
2121
2122 /* print probe information */
2123 printk(KERN_INFO "%s: wl3501 @ 0x%3.3x, IRQ %d, MAC addr in flash ROM:",
2124 dev->name, this->base_addr, (int)dev->irq);
2125 for (i = 0; i < 6; i++) {
2126 dev->dev_addr[i] = ((char *)&this->mac_addr)[i];
2127 printk("%c%02x", i ? ':' : ' ', dev->dev_addr[i]);
2128 }
2129 printk("\n");
2130 /*
2131 * Initialize card parameters - added by jss
2132 */
2133 this->net_type = IW_MODE_INFRA;
2134 this->bss_cnt = 0;
2135 this->join_sta_bss = 0;
2136 this->adhoc_times = 0;
2137 iw_set_mgmt_info_element(IW_MGMT_INFO_ELEMENT_SSID, &this->essid.el,
2138 "ANY", 3);
2139 this->card_name[0] = '\0';
2140 this->firmware_date[0] = '\0';
2141 this->rssi = 255;
2142 this->chan = iw_default_channel(this->reg_domain);
2143 strlcpy(this->nick, "Planet WL3501", sizeof(this->nick));
2144 spin_lock_init(&this->lock);
2145 init_waitqueue_head(&this->wait);
2146 netif_start_queue(dev);
2147 goto out;
2148 cs_failed:
2149 cs_error(link->handle, last_fn, last_ret);
2150 failed:
2151 wl3501_release(link);
2152 out:
2153 return;
2154 }
2155
2156 /**
2157 * wl3501_release - unregister the net, release PCMCIA configuration
2158 * @arg - link
2159 *
2160 * After a card is removed, wl3501_release() will unregister the net device,
2161 * and release the PCMCIA configuration. If the device is still open, this
2162 * will be postponed until it is closed.
2163 */
2164 static void wl3501_release(dev_link_t *link)
2165 {
2166 struct net_device *dev = link->priv;
2167
2168 /* Unlink the device chain */
2169 if (link->dev) {
2170 unregister_netdev(dev);
2171 link->dev = NULL;
2172 }
2173
2174 /* Don't bother checking to see if these succeed or not */
2175 pcmcia_release_configuration(link->handle);
2176 pcmcia_release_io(link->handle, &link->io);
2177 pcmcia_release_irq(link->handle, &link->irq);
2178 link->state &= ~DEV_CONFIG;
2179 }
2180
2181 /**
2182 * wl3501_event - The card status event handler
2183 * @event - event
2184 * @pri - priority
2185 * @args - arguments for this event
2186 *
2187 * The card status event handler. Mostly, this schedules other stuff to run
2188 * after an event is received. A CARD_REMOVAL event also sets some flags to
2189 * discourage the net drivers from trying to talk to the card any more.
2190 *
2191 * When a CARD_REMOVAL event is received, we immediately set a flag to block
2192 * future accesses to this device. All the functions that actually access the
2193 * device should check this flag to make sure the card is still present.
2194 */
2195 static int wl3501_event(event_t event, int pri, event_callback_args_t *args)
2196 {
2197 dev_link_t *link = args->client_data;
2198 struct net_device *dev = link->priv;
2199
2200 switch (event) {
2201 case CS_EVENT_CARD_REMOVAL:
2202 link->state &= ~DEV_PRESENT;
2203 if (link->state & DEV_CONFIG) {
2204 while (link->open > 0)
2205 wl3501_close(dev);
2206 netif_device_detach(dev);
2207 wl3501_release(link);
2208 }
2209 break;
2210 case CS_EVENT_CARD_INSERTION:
2211 link->state |= DEV_PRESENT | DEV_CONFIG_PENDING;
2212 wl3501_config(link);
2213 break;
2214 case CS_EVENT_PM_SUSPEND:
2215 link->state |= DEV_SUSPEND;
2216 wl3501_pwr_mgmt(dev->priv, WL3501_SUSPEND);
2217 /* Fall through... */
2218 case CS_EVENT_RESET_PHYSICAL:
2219 if (link->state & DEV_CONFIG) {
2220 if (link->open)
2221 netif_device_detach(dev);
2222 pcmcia_release_configuration(link->handle);
2223 }
2224 break;
2225 case CS_EVENT_PM_RESUME:
2226 link->state &= ~DEV_SUSPEND;
2227 wl3501_pwr_mgmt(dev->priv, WL3501_RESUME);
2228 /* Fall through... */
2229 case CS_EVENT_CARD_RESET:
2230 if (link->state & DEV_CONFIG) {
2231 pcmcia_request_configuration(link->handle, &link->conf);
2232 if (link->open) {
2233 wl3501_reset(dev);
2234 netif_device_attach(dev);
2235 }
2236 }
2237 break;
2238 }
2239 return 0;
2240 }
2241
2242 static struct pcmcia_driver wl3501_driver = {
2243 .owner = THIS_MODULE,
2244 .drv = {
2245 .name = "wl3501_cs",
2246 },
2247 .attach = wl3501_attach,
2248 .detach = wl3501_detach,
2249 };
2250
2251 static int __init wl3501_init_module(void)
2252 {
2253 return pcmcia_register_driver(&wl3501_driver);
2254 }
2255
2256 static void __exit wl3501_exit_module(void)
2257 {
2258 dprintk(0, ": unloading");
2259 pcmcia_unregister_driver(&wl3501_driver);
2260 BUG_ON(wl3501_dev_list != NULL);
2261 }
2262
2263 module_init(wl3501_init_module);
2264 module_exit(wl3501_exit_module);
2265
2266 MODULE_AUTHOR("Fox Chen <mhchen@golf.ccl.itri.org.tw>, "
2267 "Arnaldo Carvalho de Melo <acme@conectiva.com.br>,"
2268 "Gustavo Niemeyer <niemeyer@conectiva.com>");
2269 MODULE_DESCRIPTION("Planet wl3501 wireless driver");
2270 MODULE_LICENSE("GPL");
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