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Save sram context after changing MPU, DSP or core clocks
[linux-ginger.git] / drivers / net / wireless / wl3501_cs.c
blob4f1e0cfe609ba5dec34f73364994b294bdfd3a8a
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/ethtool.h>
33 #include <linux/init.h>
34 #include <linux/interrupt.h>
35 #include <linux/in.h>
36 #include <linux/kernel.h>
37 #include <linux/module.h>
38 #include <linux/fcntl.h>
39 #include <linux/if_arp.h>
40 #include <linux/ioport.h>
41 #include <linux/netdevice.h>
42 #include <linux/etherdevice.h>
43 #include <linux/skbuff.h>
44 #include <linux/slab.h>
45 #include <linux/string.h>
46 #include <linux/wireless.h>
47 #include <linux/ieee80211.h>
48
49 #include <net/iw_handler.h>
50
51 #include <pcmcia/cs_types.h>
52 #include <pcmcia/cs.h>
53 #include <pcmcia/cistpl.h>
54 #include <pcmcia/cisreg.h>
55 #include <pcmcia/ds.h>
56
57 #include <asm/io.h>
58 #include <asm/uaccess.h>
59 #include <asm/system.h>
60
61 #include "wl3501.h"
62
63 #ifndef __i386__
64 #define slow_down_io()
65 #endif
66
67 /* For rough constant delay */
68 #define WL3501_NOPLOOP(n) { int x = 0; while (x++ < n) slow_down_io(); }
69
70 /*
71 * All the PCMCIA modules use PCMCIA_DEBUG to control debugging. If you do not
72 * define PCMCIA_DEBUG at all, all the debug code will be left out. If you
73 * compile with PCMCIA_DEBUG=0, the debug code will be present but disabled --
74 * but it can then be enabled for specific modules at load time with a
75 * 'pc_debug=#' option to insmod.
76 */
77 #define PCMCIA_DEBUG 0
78 #ifdef PCMCIA_DEBUG
79 static int pc_debug = PCMCIA_DEBUG;
80 module_param(pc_debug, int, 0);
81 #define dprintk(n, format, args...) \
82 { if (pc_debug > (n)) \
83 printk(KERN_INFO "%s: " format "\n", __func__ , ##args); }
84 #else
85 #define dprintk(n, format, args...)
86 #endif
87
88 #define wl3501_outb(a, b) { outb(a, b); slow_down_io(); }
89 #define wl3501_outb_p(a, b) { outb_p(a, b); slow_down_io(); }
90 #define wl3501_outsb(a, b, c) { outsb(a, b, c); slow_down_io(); }
91
92 #define WL3501_RELEASE_TIMEOUT (25 * HZ)
93 #define WL3501_MAX_ADHOC_TRIES 16
94
95 #define WL3501_RESUME 0
96 #define WL3501_SUSPEND 1
97
98 /*
99 * The event() function is this driver's Card Services event handler. It will
100 * be called by Card Services when an appropriate card status event is
101 * received. The config() and release() entry points are used to configure or
102 * release a socket, in response to card insertion and ejection events. They
103 * are invoked from the wl24 event handler.
104 */
105 static int wl3501_config(struct pcmcia_device *link);
106 static void wl3501_release(struct pcmcia_device *link);
107
108 /*
109 * The dev_info variable is the "key" that is used to match up this
110 * device driver with appropriate cards, through the card configuration
111 * database.
112 */
113 static dev_info_t wl3501_dev_info = "wl3501_cs";
114
115 static const struct {
116 int reg_domain;
117 int min, max, deflt;
118 } iw_channel_table[] = {
119 {
120 .reg_domain = IW_REG_DOMAIN_FCC,
121 .min = 1,
122 .max = 11,
123 .deflt = 1,
124 },
125 {
126 .reg_domain = IW_REG_DOMAIN_DOC,
127 .min = 1,
128 .max = 11,
129 .deflt = 1,
130 },
131 {
132 .reg_domain = IW_REG_DOMAIN_ETSI,
133 .min = 1,
134 .max = 13,
135 .deflt = 1,
136 },
137 {
138 .reg_domain = IW_REG_DOMAIN_SPAIN,
139 .min = 10,
140 .max = 11,
141 .deflt = 10,
142 },
143 {
144 .reg_domain = IW_REG_DOMAIN_FRANCE,
145 .min = 10,
146 .max = 13,
147 .deflt = 10,
148 },
149 {
150 .reg_domain = IW_REG_DOMAIN_MKK,
151 .min = 14,
152 .max = 14,
153 .deflt = 14,
154 },
155 {
156 .reg_domain = IW_REG_DOMAIN_MKK1,
157 .min = 1,
158 .max = 14,
159 .deflt = 1,
160 },
161 {
162 .reg_domain = IW_REG_DOMAIN_ISRAEL,
163 .min = 3,
164 .max = 9,
165 .deflt = 9,
166 },
167 };
168
169 /**
170 * iw_valid_channel - validate channel in regulatory domain
171 * @reg_comain - regulatory domain
172 * @channel - channel to validate
173 *
174 * Returns 0 if invalid in the specified regulatory domain, non-zero if valid.
175 */
176 static int iw_valid_channel(int reg_domain, int channel)
177 {
178 int i, rc = 0;
179
180 for (i = 0; i < ARRAY_SIZE(iw_channel_table); i++)
181 if (reg_domain == iw_channel_table[i].reg_domain) {
182 rc = channel >= iw_channel_table[i].min &&
183 channel <= iw_channel_table[i].max;
184 break;
185 }
186 return rc;
187 }
188
189 /**
190 * iw_default_channel - get default channel for a regulatory domain
191 * @reg_comain - regulatory domain
192 *
193 * Returns the default channel for a regulatory domain
194 */
195 static int iw_default_channel(int reg_domain)
196 {
197 int i, rc = 1;
198
199 for (i = 0; i < ARRAY_SIZE(iw_channel_table); i++)
200 if (reg_domain == iw_channel_table[i].reg_domain) {
201 rc = iw_channel_table[i].deflt;
202 break;
203 }
204 return rc;
205 }
206
207 static void iw_set_mgmt_info_element(enum iw_mgmt_info_element_ids id,
208 struct iw_mgmt_info_element *el,
209 void *value, int len)
210 {
211 el->id = id;
212 el->len = len;
213 memcpy(el->data, value, len);
214 }
215
216 static void iw_copy_mgmt_info_element(struct iw_mgmt_info_element *to,
217 struct iw_mgmt_info_element *from)
218 {
219 iw_set_mgmt_info_element(from->id, to, from->data, from->len);
220 }
221
222 static inline void wl3501_switch_page(struct wl3501_card *this, u8 page)
223 {
224 wl3501_outb(page, this->base_addr + WL3501_NIC_BSS);
225 }
226
227 /*
228 * Get Ethernet MAC addresss.
229 *
230 * WARNING: We switch to FPAGE0 and switc back again.
231 * Making sure there is no other WL function beening called by ISR.
232 */
233 static int wl3501_get_flash_mac_addr(struct wl3501_card *this)
234 {
235 int base_addr = this->base_addr;
236
237 /* get MAC addr */
238 wl3501_outb(WL3501_BSS_FPAGE3, base_addr + WL3501_NIC_BSS); /* BSS */
239 wl3501_outb(0x00, base_addr + WL3501_NIC_LMAL); /* LMAL */
240 wl3501_outb(0x40, base_addr + WL3501_NIC_LMAH); /* LMAH */
241
242 /* wait for reading EEPROM */
243 WL3501_NOPLOOP(100);
244 this->mac_addr[0] = inb(base_addr + WL3501_NIC_IODPA);
245 WL3501_NOPLOOP(100);
246 this->mac_addr[1] = inb(base_addr + WL3501_NIC_IODPA);
247 WL3501_NOPLOOP(100);
248 this->mac_addr[2] = inb(base_addr + WL3501_NIC_IODPA);
249 WL3501_NOPLOOP(100);
250 this->mac_addr[3] = inb(base_addr + WL3501_NIC_IODPA);
251 WL3501_NOPLOOP(100);
252 this->mac_addr[4] = inb(base_addr + WL3501_NIC_IODPA);
253 WL3501_NOPLOOP(100);
254 this->mac_addr[5] = inb(base_addr + WL3501_NIC_IODPA);
255 WL3501_NOPLOOP(100);
256 this->reg_domain = inb(base_addr + WL3501_NIC_IODPA);
257 WL3501_NOPLOOP(100);
258 wl3501_outb(WL3501_BSS_FPAGE0, base_addr + WL3501_NIC_BSS);
259 wl3501_outb(0x04, base_addr + WL3501_NIC_LMAL);
260 wl3501_outb(0x40, base_addr + WL3501_NIC_LMAH);
261 WL3501_NOPLOOP(100);
262 this->version[0] = inb(base_addr + WL3501_NIC_IODPA);
263 WL3501_NOPLOOP(100);
264 this->version[1] = inb(base_addr + WL3501_NIC_IODPA);
265 /* switch to SRAM Page 0 (for safety) */
266 wl3501_switch_page(this, WL3501_BSS_SPAGE0);
267
268 /* The MAC addr should be 00:60:... */
269 return this->mac_addr[0] == 0x00 && this->mac_addr[1] == 0x60;
270 }
271
272 /**
273 * wl3501_set_to_wla - Move 'size' bytes from PC to card
274 * @dest: Card addressing space
275 * @src: PC addressing space
276 * @size: Bytes to move
277 *
278 * Move 'size' bytes from PC to card. (Shouldn't be interrupted)
279 */
280 static void wl3501_set_to_wla(struct wl3501_card *this, u16 dest, void *src,
281 int size)
282 {
283 /* switch to SRAM Page 0 */
284 wl3501_switch_page(this, (dest & 0x8000) ? WL3501_BSS_SPAGE1 :
285 WL3501_BSS_SPAGE0);
286 /* set LMAL and LMAH */
287 wl3501_outb(dest & 0xff, this->base_addr + WL3501_NIC_LMAL);
288 wl3501_outb(((dest >> 8) & 0x7f), this->base_addr + WL3501_NIC_LMAH);
289
290 /* rep out to Port A */
291 wl3501_outsb(this->base_addr + WL3501_NIC_IODPA, src, size);
292 }
293
294 /**
295 * wl3501_get_from_wla - Move 'size' bytes from card to PC
296 * @src: Card addressing space
297 * @dest: PC addressing space
298 * @size: Bytes to move
299 *
300 * Move 'size' bytes from card to PC. (Shouldn't be interrupted)
301 */
302 static void wl3501_get_from_wla(struct wl3501_card *this, u16 src, void *dest,
303 int size)
304 {
305 /* switch to SRAM Page 0 */
306 wl3501_switch_page(this, (src & 0x8000) ? WL3501_BSS_SPAGE1 :
307 WL3501_BSS_SPAGE0);
308 /* set LMAL and LMAH */
309 wl3501_outb(src & 0xff, this->base_addr + WL3501_NIC_LMAL);
310 wl3501_outb((src >> 8) & 0x7f, this->base_addr + WL3501_NIC_LMAH);
311
312 /* rep get from Port A */
313 insb(this->base_addr + WL3501_NIC_IODPA, dest, size);
314 }
315
316 /*
317 * Get/Allocate a free Tx Data Buffer
318 *
319 * *--------------*-----------------*----------------------------------*
320 * | PLCP | MAC Header | DST SRC Data ... |
321 * | (24 bytes) | (30 bytes) | (6) (6) (Ethernet Row Data) |
322 * *--------------*-----------------*----------------------------------*
323 * \ \- IEEE 802.11 -/ \-------------- len --------------/
324 * \-struct wl3501_80211_tx_hdr--/ \-------- Ethernet Frame -------/
325 *
326 * Return = Postion in Card
327 */
328 static u16 wl3501_get_tx_buffer(struct wl3501_card *this, u16 len)
329 {
330 u16 next, blk_cnt = 0, zero = 0;
331 u16 full_len = sizeof(struct wl3501_80211_tx_hdr) + len;
332 u16 ret = 0;
333
334 if (full_len > this->tx_buffer_cnt * 254)
335 goto out;
336 ret = this->tx_buffer_head;
337 while (full_len) {
338 if (full_len < 254)
339 full_len = 0;
340 else
341 full_len -= 254;
342 wl3501_get_from_wla(this, this->tx_buffer_head, &next,
343 sizeof(next));
344 if (!full_len)
345 wl3501_set_to_wla(this, this->tx_buffer_head, &zero,
346 sizeof(zero));
347 this->tx_buffer_head = next;
348 blk_cnt++;
349 /* if buffer is not enough */
350 if (!next && full_len) {
351 this->tx_buffer_head = ret;
352 ret = 0;
353 goto out;
354 }
355 }
356 this->tx_buffer_cnt -= blk_cnt;
357 out:
358 return ret;
359 }
360
361 /*
362 * Free an allocated Tx Buffer. ptr must be correct position.
363 */
364 static void wl3501_free_tx_buffer(struct wl3501_card *this, u16 ptr)
365 {
366 /* check if all space is not free */
367 if (!this->tx_buffer_head)
368 this->tx_buffer_head = ptr;
369 else
370 wl3501_set_to_wla(this, this->tx_buffer_tail,
371 &ptr, sizeof(ptr));
372 while (ptr) {
373 u16 next;
374
375 this->tx_buffer_cnt++;
376 wl3501_get_from_wla(this, ptr, &next, sizeof(next));
377 this->tx_buffer_tail = ptr;
378 ptr = next;
379 }
380 }
381
382 static int wl3501_esbq_req_test(struct wl3501_card *this)
383 {
384 u8 tmp;
385
386 wl3501_get_from_wla(this, this->esbq_req_head + 3, &tmp, sizeof(tmp));
387 return tmp & 0x80;
388 }
389
390 static void wl3501_esbq_req(struct wl3501_card *this, u16 *ptr)
391 {
392 u16 tmp = 0;
393
394 wl3501_set_to_wla(this, this->esbq_req_head, ptr, 2);
395 wl3501_set_to_wla(this, this->esbq_req_head + 2, &tmp, sizeof(tmp));
396 this->esbq_req_head += 4;
397 if (this->esbq_req_head >= this->esbq_req_end)
398 this->esbq_req_head = this->esbq_req_start;
399 }
400
401 static int wl3501_esbq_exec(struct wl3501_card *this, void *sig, int sig_size)
402 {
403 int rc = -EIO;
404
405 if (wl3501_esbq_req_test(this)) {
406 u16 ptr = wl3501_get_tx_buffer(this, sig_size);
407 if (ptr) {
408 wl3501_set_to_wla(this, ptr, sig, sig_size);
409 wl3501_esbq_req(this, &ptr);
410 rc = 0;
411 }
412 }
413 return rc;
414 }
415
416 static int wl3501_get_mib_value(struct wl3501_card *this, u8 index,
417 void *bf, int size)
418 {
419 struct wl3501_get_req sig = {
420 .sig_id = WL3501_SIG_GET_REQ,
421 .mib_attrib = index,
422 };
423 unsigned long flags;
424 int rc = -EIO;
425
426 spin_lock_irqsave(&this->lock, flags);
427 if (wl3501_esbq_req_test(this)) {
428 u16 ptr = wl3501_get_tx_buffer(this, sizeof(sig));
429 if (ptr) {
430 wl3501_set_to_wla(this, ptr, &sig, sizeof(sig));
431 wl3501_esbq_req(this, &ptr);
432 this->sig_get_confirm.mib_status = 255;
433 spin_unlock_irqrestore(&this->lock, flags);
434 rc = wait_event_interruptible(this->wait,
435 this->sig_get_confirm.mib_status != 255);
436 if (!rc)
437 memcpy(bf, this->sig_get_confirm.mib_value,
438 size);
439 goto out;
440 }
441 }
442 spin_unlock_irqrestore(&this->lock, flags);
443 out:
444 return rc;
445 }
446
447 static int wl3501_pwr_mgmt(struct wl3501_card *this, int suspend)
448 {
449 struct wl3501_pwr_mgmt_req sig = {
450 .sig_id = WL3501_SIG_PWR_MGMT_REQ,
451 .pwr_save = suspend,
452 .wake_up = !suspend,
453 .receive_dtims = 10,
454 };
455 unsigned long flags;
456 int rc = -EIO;
457
458 spin_lock_irqsave(&this->lock, flags);
459 if (wl3501_esbq_req_test(this)) {
460 u16 ptr = wl3501_get_tx_buffer(this, sizeof(sig));
461 if (ptr) {
462 wl3501_set_to_wla(this, ptr, &sig, sizeof(sig));
463 wl3501_esbq_req(this, &ptr);
464 this->sig_pwr_mgmt_confirm.status = 255;
465 spin_unlock_irqrestore(&this->lock, flags);
466 rc = wait_event_interruptible(this->wait,
467 this->sig_pwr_mgmt_confirm.status != 255);
468 printk(KERN_INFO "%s: %s status=%d\n", __func__,
469 suspend ? "suspend" : "resume",
470 this->sig_pwr_mgmt_confirm.status);
471 goto out;
472 }
473 }
474 spin_unlock_irqrestore(&this->lock, flags);
475 out:
476 return rc;
477 }
478
479 /**
480 * wl3501_send_pkt - Send a packet.
481 * @this - card
482 *
483 * Send a packet.
484 *
485 * data = Ethernet raw frame. (e.g. data[0] - data[5] is Dest MAC Addr,
486 * data[6] - data[11] is Src MAC Addr)
487 * Ref: IEEE 802.11
488 */
489 static int wl3501_send_pkt(struct wl3501_card *this, u8 *data, u16 len)
490 {
491 u16 bf, sig_bf, next, tmplen, pktlen;
492 struct wl3501_md_req sig = {
493 .sig_id = WL3501_SIG_MD_REQ,
494 };
495 u8 *pdata = (char *)data;
496 int rc = -EIO;
497
498 if (wl3501_esbq_req_test(this)) {
499 sig_bf = wl3501_get_tx_buffer(this, sizeof(sig));
500 rc = -ENOMEM;
501 if (!sig_bf) /* No free buffer available */
502 goto out;
503 bf = wl3501_get_tx_buffer(this, len + 26 + 24);
504 if (!bf) {
505 /* No free buffer available */
506 wl3501_free_tx_buffer(this, sig_bf);
507 goto out;
508 }
509 rc = 0;
510 memcpy(&sig.daddr[0], pdata, 12);
511 pktlen = len - 12;
512 pdata += 12;
513 sig.data = bf;
514 if (((*pdata) * 256 + (*(pdata + 1))) > 1500) {
515 u8 addr4[ETH_ALEN] = {
516 [0] = 0xAA, [1] = 0xAA, [2] = 0x03, [4] = 0x00,
517 };
518
519 wl3501_set_to_wla(this, bf + 2 +
520 offsetof(struct wl3501_tx_hdr, addr4),
521 addr4, sizeof(addr4));
522 sig.size = pktlen + 24 + 4 + 6;
523 if (pktlen > (254 - sizeof(struct wl3501_tx_hdr))) {
524 tmplen = 254 - sizeof(struct wl3501_tx_hdr);
525 pktlen -= tmplen;
526 } else {
527 tmplen = pktlen;
528 pktlen = 0;
529 }
530 wl3501_set_to_wla(this,
531 bf + 2 + sizeof(struct wl3501_tx_hdr),
532 pdata, tmplen);
533 pdata += tmplen;
534 wl3501_get_from_wla(this, bf, &next, sizeof(next));
535 bf = next;
536 } else {
537 sig.size = pktlen + 24 + 4 - 2;
538 pdata += 2;
539 pktlen -= 2;
540 if (pktlen > (254 - sizeof(struct wl3501_tx_hdr) + 6)) {
541 tmplen = 254 - sizeof(struct wl3501_tx_hdr) + 6;
542 pktlen -= tmplen;
543 } else {
544 tmplen = pktlen;
545 pktlen = 0;
546 }
547 wl3501_set_to_wla(this, bf + 2 +
548 offsetof(struct wl3501_tx_hdr, addr4),
549 pdata, tmplen);
550 pdata += tmplen;
551 wl3501_get_from_wla(this, bf, &next, sizeof(next));
552 bf = next;
553 }
554 while (pktlen > 0) {
555 if (pktlen > 254) {
556 tmplen = 254;
557 pktlen -= 254;
558 } else {
559 tmplen = pktlen;
560 pktlen = 0;
561 }
562 wl3501_set_to_wla(this, bf + 2, pdata, tmplen);
563 pdata += tmplen;
564 wl3501_get_from_wla(this, bf, &next, sizeof(next));
565 bf = next;
566 }
567 wl3501_set_to_wla(this, sig_bf, &sig, sizeof(sig));
568 wl3501_esbq_req(this, &sig_bf);
569 }
570 out:
571 return rc;
572 }
573
574 static int wl3501_mgmt_resync(struct wl3501_card *this)
575 {
576 struct wl3501_resync_req sig = {
577 .sig_id = WL3501_SIG_RESYNC_REQ,
578 };
579
580 return wl3501_esbq_exec(this, &sig, sizeof(sig));
581 }
582
583 static inline int wl3501_fw_bss_type(struct wl3501_card *this)
584 {
585 return this->net_type == IW_MODE_INFRA ? WL3501_NET_TYPE_INFRA :
586 WL3501_NET_TYPE_ADHOC;
587 }
588
589 static inline int wl3501_fw_cap_info(struct wl3501_card *this)
590 {
591 return this->net_type == IW_MODE_INFRA ? WL3501_MGMT_CAPABILITY_ESS :
592 WL3501_MGMT_CAPABILITY_IBSS;
593 }
594
595 static int wl3501_mgmt_scan(struct wl3501_card *this, u16 chan_time)
596 {
597 struct wl3501_scan_req sig = {
598 .sig_id = WL3501_SIG_SCAN_REQ,
599 .scan_type = WL3501_SCAN_TYPE_ACTIVE,
600 .probe_delay = 0x10,
601 .min_chan_time = chan_time,
602 .max_chan_time = chan_time,
603 .bss_type = wl3501_fw_bss_type(this),
604 };
605
606 this->bss_cnt = this->join_sta_bss = 0;
607 return wl3501_esbq_exec(this, &sig, sizeof(sig));
608 }
609
610 static int wl3501_mgmt_join(struct wl3501_card *this, u16 stas)
611 {
612 struct wl3501_join_req sig = {
613 .sig_id = WL3501_SIG_JOIN_REQ,
614 .timeout = 10,
615 .ds_pset = {
616 .el = {
617 .id = IW_MGMT_INFO_ELEMENT_DS_PARAMETER_SET,
618 .len = 1,
619 },
620 .chan = this->chan,
621 },
622 };
623
624 memcpy(&sig.beacon_period, &this->bss_set[stas].beacon_period, 72);
625 return wl3501_esbq_exec(this, &sig, sizeof(sig));
626 }
627
628 static int wl3501_mgmt_start(struct wl3501_card *this)
629 {
630 struct wl3501_start_req sig = {
631 .sig_id = WL3501_SIG_START_REQ,
632 .beacon_period = 400,
633 .dtim_period = 1,
634 .ds_pset = {
635 .el = {
636 .id = IW_MGMT_INFO_ELEMENT_DS_PARAMETER_SET,
637 .len = 1,
638 },
639 .chan = this->chan,
640 },
641 .bss_basic_rset = {
642 .el = {
643 .id = IW_MGMT_INFO_ELEMENT_SUPPORTED_RATES,
644 .len = 2,
645 },
646 .data_rate_labels = {
647 [0] = IW_MGMT_RATE_LABEL_MANDATORY |
648 IW_MGMT_RATE_LABEL_1MBIT,
649 [1] = IW_MGMT_RATE_LABEL_MANDATORY |
650 IW_MGMT_RATE_LABEL_2MBIT,
651 },
652 },
653 .operational_rset = {
654 .el = {
655 .id = IW_MGMT_INFO_ELEMENT_SUPPORTED_RATES,
656 .len = 2,
657 },
658 .data_rate_labels = {
659 [0] = IW_MGMT_RATE_LABEL_MANDATORY |
660 IW_MGMT_RATE_LABEL_1MBIT,
661 [1] = IW_MGMT_RATE_LABEL_MANDATORY |
662 IW_MGMT_RATE_LABEL_2MBIT,
663 },
664 },
665 .ibss_pset = {
666 .el = {
667 .id = IW_MGMT_INFO_ELEMENT_IBSS_PARAMETER_SET,
668 .len = 2,
669 },
670 .atim_window = 10,
671 },
672 .bss_type = wl3501_fw_bss_type(this),
673 .cap_info = wl3501_fw_cap_info(this),
674 };
675
676 iw_copy_mgmt_info_element(&sig.ssid.el, &this->essid.el);
677 iw_copy_mgmt_info_element(&this->keep_essid.el, &this->essid.el);
678 return wl3501_esbq_exec(this, &sig, sizeof(sig));
679 }
680
681 static void wl3501_mgmt_scan_confirm(struct wl3501_card *this, u16 addr)
682 {
683 u16 i = 0;
684 int matchflag = 0;
685 struct wl3501_scan_confirm sig;
686
687 dprintk(3, "entry");
688 wl3501_get_from_wla(this, addr, &sig, sizeof(sig));
689 if (sig.status == WL3501_STATUS_SUCCESS) {
690 dprintk(3, "success");
691 if ((this->net_type == IW_MODE_INFRA &&
692 (sig.cap_info & WL3501_MGMT_CAPABILITY_ESS)) ||
693 (this->net_type == IW_MODE_ADHOC &&
694 (sig.cap_info & WL3501_MGMT_CAPABILITY_IBSS)) ||
695 this->net_type == IW_MODE_AUTO) {
696 if (!this->essid.el.len)
697 matchflag = 1;
698 else if (this->essid.el.len == 3 &&
699 !memcmp(this->essid.essid, "ANY", 3))
700 matchflag = 1;
701 else if (this->essid.el.len != sig.ssid.el.len)
702 matchflag = 0;
703 else if (memcmp(this->essid.essid, sig.ssid.essid,
704 this->essid.el.len))
705 matchflag = 0;
706 else
707 matchflag = 1;
708 if (matchflag) {
709 for (i = 0; i < this->bss_cnt; i++) {
710 if (!memcmp(this->bss_set[i].bssid,
711 sig.bssid, ETH_ALEN)) {
712 matchflag = 0;
713 break;
714 }
715 }
716 }
717 if (matchflag && (i < 20)) {
718 memcpy(&this->bss_set[i].beacon_period,
719 &sig.beacon_period, 73);
720 this->bss_cnt++;
721 this->rssi = sig.rssi;
722 }
723 }
724 } else if (sig.status == WL3501_STATUS_TIMEOUT) {
725 dprintk(3, "timeout");
726 this->join_sta_bss = 0;
727 for (i = this->join_sta_bss; i < this->bss_cnt; i++)
728 if (!wl3501_mgmt_join(this, i))
729 break;
730 this->join_sta_bss = i;
731 if (this->join_sta_bss == this->bss_cnt) {
732 if (this->net_type == IW_MODE_INFRA)
733 wl3501_mgmt_scan(this, 100);
734 else {
735 this->adhoc_times++;
736 if (this->adhoc_times > WL3501_MAX_ADHOC_TRIES)
737 wl3501_mgmt_start(this);
738 else
739 wl3501_mgmt_scan(this, 100);
740 }
741 }
742 }
743 }
744
745 /**
746 * wl3501_block_interrupt - Mask interrupt from SUTRO
747 * @this - card
748 *
749 * Mask interrupt from SUTRO. (i.e. SUTRO cannot interrupt the HOST)
750 * Return: 1 if interrupt is originally enabled
751 */
752 static int wl3501_block_interrupt(struct wl3501_card *this)
753 {
754 u8 old = inb(this->base_addr + WL3501_NIC_GCR);
755 u8 new = old & (~(WL3501_GCR_ECINT | WL3501_GCR_INT2EC |
756 WL3501_GCR_ENECINT));
757
758 wl3501_outb(new, this->base_addr + WL3501_NIC_GCR);
759 return old & WL3501_GCR_ENECINT;
760 }
761
762 /**
763 * wl3501_unblock_interrupt - Enable interrupt from SUTRO
764 * @this - card
765 *
766 * Enable interrupt from SUTRO. (i.e. SUTRO can interrupt the HOST)
767 * Return: 1 if interrupt is originally enabled
768 */
769 static int wl3501_unblock_interrupt(struct wl3501_card *this)
770 {
771 u8 old = inb(this->base_addr + WL3501_NIC_GCR);
772 u8 new = (old & ~(WL3501_GCR_ECINT | WL3501_GCR_INT2EC)) |
773 WL3501_GCR_ENECINT;
774
775 wl3501_outb(new, this->base_addr + WL3501_NIC_GCR);
776 return old & WL3501_GCR_ENECINT;
777 }
778
779 /**
780 * wl3501_receive - Receive data from Receive Queue.
781 *
782 * Receive data from Receive Queue.
783 *
784 * @this: card
785 * @bf: address of host
786 * @size: size of buffer.
787 */
788 static u16 wl3501_receive(struct wl3501_card *this, u8 *bf, u16 size)
789 {
790 u16 next_addr, next_addr1;
791 u8 *data = bf + 12;
792
793 size -= 12;
794 wl3501_get_from_wla(this, this->start_seg + 2,
795 &next_addr, sizeof(next_addr));
796 if (size > WL3501_BLKSZ - sizeof(struct wl3501_rx_hdr)) {
797 wl3501_get_from_wla(this,
798 this->start_seg +
799 sizeof(struct wl3501_rx_hdr), data,
800 WL3501_BLKSZ -
801 sizeof(struct wl3501_rx_hdr));
802 size -= WL3501_BLKSZ - sizeof(struct wl3501_rx_hdr);
803 data += WL3501_BLKSZ - sizeof(struct wl3501_rx_hdr);
804 } else {
805 wl3501_get_from_wla(this,
806 this->start_seg +
807 sizeof(struct wl3501_rx_hdr),
808 data, size);
809 size = 0;
810 }
811 while (size > 0) {
812 if (size > WL3501_BLKSZ - 5) {
813 wl3501_get_from_wla(this, next_addr + 5, data,
814 WL3501_BLKSZ - 5);
815 size -= WL3501_BLKSZ - 5;
816 data += WL3501_BLKSZ - 5;
817 wl3501_get_from_wla(this, next_addr + 2, &next_addr1,
818 sizeof(next_addr1));
819 next_addr = next_addr1;
820 } else {
821 wl3501_get_from_wla(this, next_addr + 5, data, size);
822 size = 0;
823 }
824 }
825 return 0;
826 }
827
828 static void wl3501_esbq_req_free(struct wl3501_card *this)
829 {
830 u8 tmp;
831 u16 addr;
832
833 if (this->esbq_req_head == this->esbq_req_tail)
834 goto out;
835 wl3501_get_from_wla(this, this->esbq_req_tail + 3, &tmp, sizeof(tmp));
836 if (!(tmp & 0x80))
837 goto out;
838 wl3501_get_from_wla(this, this->esbq_req_tail, &addr, sizeof(addr));
839 wl3501_free_tx_buffer(this, addr);
840 this->esbq_req_tail += 4;
841 if (this->esbq_req_tail >= this->esbq_req_end)
842 this->esbq_req_tail = this->esbq_req_start;
843 out:
844 return;
845 }
846
847 static int wl3501_esbq_confirm(struct wl3501_card *this)
848 {
849 u8 tmp;
850
851 wl3501_get_from_wla(this, this->esbq_confirm + 3, &tmp, sizeof(tmp));
852 return tmp & 0x80;
853 }
854
855 static void wl3501_online(struct net_device *dev)
856 {
857 struct wl3501_card *this = netdev_priv(dev);
858
859 printk(KERN_INFO "%s: Wireless LAN online. BSSID: %pM\n",
860 dev->name, this->bssid);
861 netif_wake_queue(dev);
862 }
863
864 static void wl3501_esbq_confirm_done(struct wl3501_card *this)
865 {
866 u8 tmp = 0;
867
868 wl3501_set_to_wla(this, this->esbq_confirm + 3, &tmp, sizeof(tmp));
869 this->esbq_confirm += 4;
870 if (this->esbq_confirm >= this->esbq_confirm_end)
871 this->esbq_confirm = this->esbq_confirm_start;
872 }
873
874 static int wl3501_mgmt_auth(struct wl3501_card *this)
875 {
876 struct wl3501_auth_req sig = {
877 .sig_id = WL3501_SIG_AUTH_REQ,
878 .type = WL3501_SYS_TYPE_OPEN,
879 .timeout = 1000,
880 };
881
882 dprintk(3, "entry");
883 memcpy(sig.mac_addr, this->bssid, ETH_ALEN);
884 return wl3501_esbq_exec(this, &sig, sizeof(sig));
885 }
886
887 static int wl3501_mgmt_association(struct wl3501_card *this)
888 {
889 struct wl3501_assoc_req sig = {
890 .sig_id = WL3501_SIG_ASSOC_REQ,
891 .timeout = 1000,
892 .listen_interval = 5,
893 .cap_info = this->cap_info,
894 };
895
896 dprintk(3, "entry");
897 memcpy(sig.mac_addr, this->bssid, ETH_ALEN);
898 return wl3501_esbq_exec(this, &sig, sizeof(sig));
899 }
900
901 static void wl3501_mgmt_join_confirm(struct net_device *dev, u16 addr)
902 {
903 struct wl3501_card *this = netdev_priv(dev);
904 struct wl3501_join_confirm sig;
905
906 dprintk(3, "entry");
907 wl3501_get_from_wla(this, addr, &sig, sizeof(sig));
908 if (sig.status == WL3501_STATUS_SUCCESS) {
909 if (this->net_type == IW_MODE_INFRA) {
910 if (this->join_sta_bss < this->bss_cnt) {
911 const int i = this->join_sta_bss;
912 memcpy(this->bssid,
913 this->bss_set[i].bssid, ETH_ALEN);
914 this->chan = this->bss_set[i].ds_pset.chan;
915 iw_copy_mgmt_info_element(&this->keep_essid.el,
916 &this->bss_set[i].ssid.el);
917 wl3501_mgmt_auth(this);
918 }
919 } else {
920 const int i = this->join_sta_bss;
921
922 memcpy(&this->bssid, &this->bss_set[i].bssid, ETH_ALEN);
923 this->chan = this->bss_set[i].ds_pset.chan;
924 iw_copy_mgmt_info_element(&this->keep_essid.el,
925 &this->bss_set[i].ssid.el);
926 wl3501_online(dev);
927 }
928 } else {
929 int i;
930 this->join_sta_bss++;
931 for (i = this->join_sta_bss; i < this->bss_cnt; i++)
932 if (!wl3501_mgmt_join(this, i))
933 break;
934 this->join_sta_bss = i;
935 if (this->join_sta_bss == this->bss_cnt) {
936 if (this->net_type == IW_MODE_INFRA)
937 wl3501_mgmt_scan(this, 100);
938 else {
939 this->adhoc_times++;
940 if (this->adhoc_times > WL3501_MAX_ADHOC_TRIES)
941 wl3501_mgmt_start(this);
942 else
943 wl3501_mgmt_scan(this, 100);
944 }
945 }
946 }
947 }
948
949 static inline void wl3501_alarm_interrupt(struct net_device *dev,
950 struct wl3501_card *this)
951 {
952 if (this->net_type == IW_MODE_INFRA) {
953 printk(KERN_INFO "Wireless LAN offline\n");
954 netif_stop_queue(dev);
955 wl3501_mgmt_resync(this);
956 }
957 }
958
959 static inline void wl3501_md_confirm_interrupt(struct net_device *dev,
960 struct wl3501_card *this,
961 u16 addr)
962 {
963 struct wl3501_md_confirm sig;
964
965 dprintk(3, "entry");
966 wl3501_get_from_wla(this, addr, &sig, sizeof(sig));
967 wl3501_free_tx_buffer(this, sig.data);
968 if (netif_queue_stopped(dev))
969 netif_wake_queue(dev);
970 }
971
972 static inline void wl3501_md_ind_interrupt(struct net_device *dev,
973 struct wl3501_card *this, u16 addr)
974 {
975 struct wl3501_md_ind sig;
976 struct sk_buff *skb;
977 u8 rssi, addr4[ETH_ALEN];
978 u16 pkt_len;
979
980 wl3501_get_from_wla(this, addr, &sig, sizeof(sig));
981 this->start_seg = sig.data;
982 wl3501_get_from_wla(this,
983 sig.data + offsetof(struct wl3501_rx_hdr, rssi),
984 &rssi, sizeof(rssi));
985 this->rssi = rssi <= 63 ? (rssi * 100) / 64 : 255;
986
987 wl3501_get_from_wla(this,
988 sig.data +
989 offsetof(struct wl3501_rx_hdr, addr4),
990 &addr4, sizeof(addr4));
991 if (!(addr4[0] == 0xAA && addr4[1] == 0xAA &&
992 addr4[2] == 0x03 && addr4[4] == 0x00)) {
993 printk(KERN_INFO "Insupported packet type!\n");
994 return;
995 }
996 pkt_len = sig.size + 12 - 24 - 4 - 6;
997
998 skb = dev_alloc_skb(pkt_len + 5);
999
1000 if (!skb) {
1001 printk(KERN_WARNING "%s: Can't alloc a sk_buff of size %d.\n",
1002 dev->name, pkt_len);
1003 dev->stats.rx_dropped++;
1004 } else {
1005 skb->dev = dev;
1006 skb_reserve(skb, 2); /* IP headers on 16 bytes boundaries */
1007 skb_copy_to_linear_data(skb, (unsigned char *)&sig.daddr, 12);
1008 wl3501_receive(this, skb->data, pkt_len);
1009 skb_put(skb, pkt_len);
1010 skb->protocol = eth_type_trans(skb, dev);
1011 dev->stats.rx_packets++;
1012 dev->stats.rx_bytes += skb->len;
1013 netif_rx(skb);
1014 }
1015 }
1016
1017 static inline void wl3501_get_confirm_interrupt(struct wl3501_card *this,
1018 u16 addr, void *sig, int size)
1019 {
1020 dprintk(3, "entry");
1021 wl3501_get_from_wla(this, addr, &this->sig_get_confirm,
1022 sizeof(this->sig_get_confirm));
1023 wake_up(&this->wait);
1024 }
1025
1026 static inline void wl3501_start_confirm_interrupt(struct net_device *dev,
1027 struct wl3501_card *this,
1028 u16 addr)
1029 {
1030 struct wl3501_start_confirm sig;
1031
1032 dprintk(3, "entry");
1033 wl3501_get_from_wla(this, addr, &sig, sizeof(sig));
1034 if (sig.status == WL3501_STATUS_SUCCESS)
1035 netif_wake_queue(dev);
1036 }
1037
1038 static inline void wl3501_assoc_confirm_interrupt(struct net_device *dev,
1039 u16 addr)
1040 {
1041 struct wl3501_card *this = netdev_priv(dev);
1042 struct wl3501_assoc_confirm sig;
1043
1044 dprintk(3, "entry");
1045 wl3501_get_from_wla(this, addr, &sig, sizeof(sig));
1046
1047 if (sig.status == WL3501_STATUS_SUCCESS)
1048 wl3501_online(dev);
1049 }
1050
1051 static inline void wl3501_auth_confirm_interrupt(struct wl3501_card *this,
1052 u16 addr)
1053 {
1054 struct wl3501_auth_confirm sig;
1055
1056 dprintk(3, "entry");
1057 wl3501_get_from_wla(this, addr, &sig, sizeof(sig));
1058
1059 if (sig.status == WL3501_STATUS_SUCCESS)
1060 wl3501_mgmt_association(this);
1061 else
1062 wl3501_mgmt_resync(this);
1063 }
1064
1065 static inline void wl3501_rx_interrupt(struct net_device *dev)
1066 {
1067 int morepkts;
1068 u16 addr;
1069 u8 sig_id;
1070 struct wl3501_card *this = netdev_priv(dev);
1071
1072 dprintk(3, "entry");
1073 loop:
1074 morepkts = 0;
1075 if (!wl3501_esbq_confirm(this))
1076 goto free;
1077 wl3501_get_from_wla(this, this->esbq_confirm, &addr, sizeof(addr));
1078 wl3501_get_from_wla(this, addr + 2, &sig_id, sizeof(sig_id));
1079
1080 switch (sig_id) {
1081 case WL3501_SIG_DEAUTH_IND:
1082 case WL3501_SIG_DISASSOC_IND:
1083 case WL3501_SIG_ALARM:
1084 wl3501_alarm_interrupt(dev, this);
1085 break;
1086 case WL3501_SIG_MD_CONFIRM:
1087 wl3501_md_confirm_interrupt(dev, this, addr);
1088 break;
1089 case WL3501_SIG_MD_IND:
1090 wl3501_md_ind_interrupt(dev, this, addr);
1091 break;
1092 case WL3501_SIG_GET_CONFIRM:
1093 wl3501_get_confirm_interrupt(this, addr,
1094 &this->sig_get_confirm,
1095 sizeof(this->sig_get_confirm));
1096 break;
1097 case WL3501_SIG_PWR_MGMT_CONFIRM:
1098 wl3501_get_confirm_interrupt(this, addr,
1099 &this->sig_pwr_mgmt_confirm,
1100 sizeof(this->sig_pwr_mgmt_confirm));
1101 break;
1102 case WL3501_SIG_START_CONFIRM:
1103 wl3501_start_confirm_interrupt(dev, this, addr);
1104 break;
1105 case WL3501_SIG_SCAN_CONFIRM:
1106 wl3501_mgmt_scan_confirm(this, addr);
1107 break;
1108 case WL3501_SIG_JOIN_CONFIRM:
1109 wl3501_mgmt_join_confirm(dev, addr);
1110 break;
1111 case WL3501_SIG_ASSOC_CONFIRM:
1112 wl3501_assoc_confirm_interrupt(dev, addr);
1113 break;
1114 case WL3501_SIG_AUTH_CONFIRM:
1115 wl3501_auth_confirm_interrupt(this, addr);
1116 break;
1117 case WL3501_SIG_RESYNC_CONFIRM:
1118 wl3501_mgmt_resync(this); /* FIXME: should be resync_confirm */
1119 break;
1120 }
1121 wl3501_esbq_confirm_done(this);
1122 morepkts = 1;
1123 /* free request if necessary */
1124 free:
1125 wl3501_esbq_req_free(this);
1126 if (morepkts)
1127 goto loop;
1128 }
1129
1130 static inline void wl3501_ack_interrupt(struct wl3501_card *this)
1131 {
1132 wl3501_outb(WL3501_GCR_ECINT, this->base_addr + WL3501_NIC_GCR);
1133 }
1134
1135 /**
1136 * wl3501_interrupt - Hardware interrupt from card.
1137 * @irq - Interrupt number
1138 * @dev_id - net_device
1139 *
1140 * We must acknowledge the interrupt as soon as possible, and block the
1141 * interrupt from the same card immediately to prevent re-entry.
1142 *
1143 * Before accessing the Control_Status_Block, we must lock SUTRO first.
1144 * On the other hand, to prevent SUTRO from malfunctioning, we must
1145 * unlock the SUTRO as soon as possible.
1146 */
1147 static irqreturn_t wl3501_interrupt(int irq, void *dev_id)
1148 {
1149 struct net_device *dev = dev_id;
1150 struct wl3501_card *this;
1151
1152 this = netdev_priv(dev);
1153 spin_lock(&this->lock);
1154 wl3501_ack_interrupt(this);
1155 wl3501_block_interrupt(this);
1156 wl3501_rx_interrupt(dev);
1157 wl3501_unblock_interrupt(this);
1158 spin_unlock(&this->lock);
1159
1160 return IRQ_HANDLED;
1161 }
1162
1163 static int wl3501_reset_board(struct wl3501_card *this)
1164 {
1165 u8 tmp = 0;
1166 int i, rc = 0;
1167
1168 /* Coreset */
1169 wl3501_outb_p(WL3501_GCR_CORESET, this->base_addr + WL3501_NIC_GCR);
1170 wl3501_outb_p(0, this->base_addr + WL3501_NIC_GCR);
1171 wl3501_outb_p(WL3501_GCR_CORESET, this->base_addr + WL3501_NIC_GCR);
1172
1173 /* Reset SRAM 0x480 to zero */
1174 wl3501_set_to_wla(this, 0x480, &tmp, sizeof(tmp));
1175
1176 /* Start up */
1177 wl3501_outb_p(0, this->base_addr + WL3501_NIC_GCR);
1178
1179 WL3501_NOPLOOP(1024 * 50);
1180
1181 wl3501_unblock_interrupt(this); /* acme: was commented */
1182
1183 /* Polling Self_Test_Status */
1184 for (i = 0; i < 10000; i++) {
1185 wl3501_get_from_wla(this, 0x480, &tmp, sizeof(tmp));
1186
1187 if (tmp == 'W') {
1188 /* firmware complete all test successfully */
1189 tmp = 'A';
1190 wl3501_set_to_wla(this, 0x480, &tmp, sizeof(tmp));
1191 goto out;
1192 }
1193 WL3501_NOPLOOP(10);
1194 }
1195 printk(KERN_WARNING "%s: failed to reset the board!\n", __func__);
1196 rc = -ENODEV;
1197 out:
1198 return rc;
1199 }
1200
1201 static int wl3501_init_firmware(struct wl3501_card *this)
1202 {
1203 u16 ptr, next;
1204 int rc = wl3501_reset_board(this);
1205
1206 if (rc)
1207 goto fail;
1208 this->card_name[0] = '\0';
1209 wl3501_get_from_wla(this, 0x1a00,
1210 this->card_name, sizeof(this->card_name));
1211 this->card_name[sizeof(this->card_name) - 1] = '\0';
1212 this->firmware_date[0] = '\0';
1213 wl3501_get_from_wla(this, 0x1a40,
1214 this->firmware_date, sizeof(this->firmware_date));
1215 this->firmware_date[sizeof(this->firmware_date) - 1] = '\0';
1216 /* Switch to SRAM Page 0 */
1217 wl3501_switch_page(this, WL3501_BSS_SPAGE0);
1218 /* Read parameter from card */
1219 wl3501_get_from_wla(this, 0x482, &this->esbq_req_start, 2);
1220 wl3501_get_from_wla(this, 0x486, &this->esbq_req_end, 2);
1221 wl3501_get_from_wla(this, 0x488, &this->esbq_confirm_start, 2);
1222 wl3501_get_from_wla(this, 0x48c, &this->esbq_confirm_end, 2);
1223 wl3501_get_from_wla(this, 0x48e, &this->tx_buffer_head, 2);
1224 wl3501_get_from_wla(this, 0x492, &this->tx_buffer_size, 2);
1225 this->esbq_req_tail = this->esbq_req_head = this->esbq_req_start;
1226 this->esbq_req_end += this->esbq_req_start;
1227 this->esbq_confirm = this->esbq_confirm_start;
1228 this->esbq_confirm_end += this->esbq_confirm_start;
1229 /* Initial Tx Buffer */
1230 this->tx_buffer_cnt = 1;
1231 ptr = this->tx_buffer_head;
1232 next = ptr + WL3501_BLKSZ;
1233 while ((next - this->tx_buffer_head) < this->tx_buffer_size) {
1234 this->tx_buffer_cnt++;
1235 wl3501_set_to_wla(this, ptr, &next, sizeof(next));
1236 ptr = next;
1237 next = ptr + WL3501_BLKSZ;
1238 }
1239 rc = 0;
1240 next = 0;
1241 wl3501_set_to_wla(this, ptr, &next, sizeof(next));
1242 this->tx_buffer_tail = ptr;
1243 out:
1244 return rc;
1245 fail:
1246 printk(KERN_WARNING "%s: failed!\n", __func__);
1247 goto out;
1248 }
1249
1250 static int wl3501_close(struct net_device *dev)
1251 {
1252 struct wl3501_card *this = netdev_priv(dev);
1253 int rc = -ENODEV;
1254 unsigned long flags;
1255 struct pcmcia_device *link;
1256 link = this->p_dev;
1257
1258 spin_lock_irqsave(&this->lock, flags);
1259 link->open--;
1260
1261 /* Stop wl3501_hard_start_xmit() from now on */
1262 netif_stop_queue(dev);
1263 wl3501_ack_interrupt(this);
1264
1265 /* Mask interrupts from the SUTRO */
1266 wl3501_block_interrupt(this);
1267
1268 rc = 0;
1269 printk(KERN_INFO "%s: WL3501 closed\n", dev->name);
1270 spin_unlock_irqrestore(&this->lock, flags);
1271 return rc;
1272 }
1273
1274 /**
1275 * wl3501_reset - Reset the SUTRO.
1276 * @dev - network device
1277 *
1278 * It is almost the same as wl3501_open(). In fact, we may just wl3501_close()
1279 * and wl3501_open() again, but I wouldn't like to free_irq() when the driver
1280 * is running. It seems to be dangerous.
1281 */
1282 static int wl3501_reset(struct net_device *dev)
1283 {
1284 struct wl3501_card *this = netdev_priv(dev);
1285 int rc = -ENODEV;
1286
1287 wl3501_block_interrupt(this);
1288
1289 if (wl3501_init_firmware(this)) {
1290 printk(KERN_WARNING "%s: Can't initialize Firmware!\n",
1291 dev->name);
1292 /* Free IRQ, and mark IRQ as unused */
1293 free_irq(dev->irq, dev);
1294 goto out;
1295 }
1296
1297 /*
1298 * Queue has to be started only when the Card is Started
1299 */
1300 netif_stop_queue(dev);
1301 this->adhoc_times = 0;
1302 wl3501_ack_interrupt(this);
1303 wl3501_unblock_interrupt(this);
1304 wl3501_mgmt_scan(this, 100);
1305 dprintk(1, "%s: device reset", dev->name);
1306 rc = 0;
1307 out:
1308 return rc;
1309 }
1310
1311 static void wl3501_tx_timeout(struct net_device *dev)
1312 {
1313 struct wl3501_card *this = netdev_priv(dev);
1314 struct net_device_stats *stats = &dev->stats;
1315 unsigned long flags;
1316 int rc;
1317
1318 stats->tx_errors++;
1319 spin_lock_irqsave(&this->lock, flags);
1320 rc = wl3501_reset(dev);
1321 spin_unlock_irqrestore(&this->lock, flags);
1322 if (rc)
1323 printk(KERN_ERR "%s: Error %d resetting card on Tx timeout!\n",
1324 dev->name, rc);
1325 else {
1326 dev->trans_start = jiffies;
1327 netif_wake_queue(dev);
1328 }
1329 }
1330
1331 /*
1332 * Return : 0 - OK
1333 * 1 - Could not transmit (dev_queue_xmit will queue it)
1334 * and try to sent it later
1335 */
1336 static netdev_tx_t wl3501_hard_start_xmit(struct sk_buff *skb,
1337 struct net_device *dev)
1338 {
1339 int enabled, rc;
1340 struct wl3501_card *this = netdev_priv(dev);
1341 unsigned long flags;
1342
1343 spin_lock_irqsave(&this->lock, flags);
1344 enabled = wl3501_block_interrupt(this);
1345 dev->trans_start = jiffies;
1346 rc = wl3501_send_pkt(this, skb->data, skb->len);
1347 if (enabled)
1348 wl3501_unblock_interrupt(this);
1349 if (rc) {
1350 ++dev->stats.tx_dropped;
1351 netif_stop_queue(dev);
1352 } else {
1353 ++dev->stats.tx_packets;
1354 dev->stats.tx_bytes += skb->len;
1355 kfree_skb(skb);
1356
1357 if (this->tx_buffer_cnt < 2)
1358 netif_stop_queue(dev);
1359 }
1360 spin_unlock_irqrestore(&this->lock, flags);
1361 return NETDEV_TX_OK;
1362 }
1363
1364 static int wl3501_open(struct net_device *dev)
1365 {
1366 int rc = -ENODEV;
1367 struct wl3501_card *this = netdev_priv(dev);
1368 unsigned long flags;
1369 struct pcmcia_device *link;
1370 link = this->p_dev;
1371
1372 spin_lock_irqsave(&this->lock, flags);
1373 if (!pcmcia_dev_present(link))
1374 goto out;
1375 netif_device_attach(dev);
1376 link->open++;
1377
1378 /* Initial WL3501 firmware */
1379 dprintk(1, "%s: Initialize WL3501 firmware...", dev->name);
1380 if (wl3501_init_firmware(this))
1381 goto fail;
1382 /* Initial device variables */
1383 this->adhoc_times = 0;
1384 /* Acknowledge Interrupt, for cleaning last state */
1385 wl3501_ack_interrupt(this);
1386
1387 /* Enable interrupt from card after all */
1388 wl3501_unblock_interrupt(this);
1389 wl3501_mgmt_scan(this, 100);
1390 rc = 0;
1391 dprintk(1, "%s: WL3501 opened", dev->name);
1392 printk(KERN_INFO "%s: Card Name: %s\n"
1393 "%s: Firmware Date: %s\n",
1394 dev->name, this->card_name,
1395 dev->name, this->firmware_date);
1396 out:
1397 spin_unlock_irqrestore(&this->lock, flags);
1398 return rc;
1399 fail:
1400 printk(KERN_WARNING "%s: Can't initialize firmware!\n", dev->name);
1401 goto out;
1402 }
1403
1404 static struct iw_statistics *wl3501_get_wireless_stats(struct net_device *dev)
1405 {
1406 struct wl3501_card *this = netdev_priv(dev);
1407 struct iw_statistics *wstats = &this->wstats;
1408 u32 value; /* size checked: it is u32 */
1409
1410 memset(wstats, 0, sizeof(*wstats));
1411 wstats->status = netif_running(dev);
1412 if (!wl3501_get_mib_value(this, WL3501_MIB_ATTR_WEP_ICV_ERROR_COUNT,
1413 &value, sizeof(value)))
1414 wstats->discard.code += value;
1415 if (!wl3501_get_mib_value(this, WL3501_MIB_ATTR_WEP_UNDECRYPTABLE_COUNT,
1416 &value, sizeof(value)))
1417 wstats->discard.code += value;
1418 if (!wl3501_get_mib_value(this, WL3501_MIB_ATTR_WEP_EXCLUDED_COUNT,
1419 &value, sizeof(value)))
1420 wstats->discard.code += value;
1421 if (!wl3501_get_mib_value(this, WL3501_MIB_ATTR_RETRY_COUNT,
1422 &value, sizeof(value)))
1423 wstats->discard.retries = value;
1424 if (!wl3501_get_mib_value(this, WL3501_MIB_ATTR_FAILED_COUNT,
1425 &value, sizeof(value)))
1426 wstats->discard.misc += value;
1427 if (!wl3501_get_mib_value(this, WL3501_MIB_ATTR_RTS_FAILURE_COUNT,
1428 &value, sizeof(value)))
1429 wstats->discard.misc += value;
1430 if (!wl3501_get_mib_value(this, WL3501_MIB_ATTR_ACK_FAILURE_COUNT,
1431 &value, sizeof(value)))
1432 wstats->discard.misc += value;
1433 if (!wl3501_get_mib_value(this, WL3501_MIB_ATTR_FRAME_DUPLICATE_COUNT,
1434 &value, sizeof(value)))
1435 wstats->discard.misc += value;
1436 return wstats;
1437 }
1438
1439 static void wl3501_get_drvinfo(struct net_device *dev, struct ethtool_drvinfo *info)
1440 {
1441 strlcpy(info->driver, wl3501_dev_info, sizeof(info->driver));
1442 }
1443
1444 static const struct ethtool_ops ops = {
1445 .get_drvinfo = wl3501_get_drvinfo
1446 };
1447
1448 /**
1449 * wl3501_detach - deletes a driver "instance"
1450 * @link - FILL_IN
1451 *
1452 * This deletes a driver "instance". The device is de-registered with Card
1453 * Services. If it has been released, all local data structures are freed.
1454 * Otherwise, the structures will be freed when the device is released.
1455 */
1456 static void wl3501_detach(struct pcmcia_device *link)
1457 {
1458 struct net_device *dev = link->priv;
1459
1460 /* If the device is currently configured and active, we won't actually
1461 * delete it yet. Instead, it is marked so that when the release()
1462 * function is called, that will trigger a proper detach(). */
1463
1464 while (link->open > 0)
1465 wl3501_close(dev);
1466
1467 netif_device_detach(dev);
1468 wl3501_release(link);
1469
1470 if (link->priv)
1471 free_netdev(link->priv);
1472
1473 return;
1474 }
1475
1476 static int wl3501_get_name(struct net_device *dev, struct iw_request_info *info,
1477 union iwreq_data *wrqu, char *extra)
1478 {
1479 strlcpy(wrqu->name, "IEEE 802.11-DS", sizeof(wrqu->name));
1480 return 0;
1481 }
1482
1483 static int wl3501_set_freq(struct net_device *dev, struct iw_request_info *info,
1484 union iwreq_data *wrqu, char *extra)
1485 {
1486 struct wl3501_card *this = netdev_priv(dev);
1487 int channel = wrqu->freq.m;
1488 int rc = -EINVAL;
1489
1490 if (iw_valid_channel(this->reg_domain, channel)) {
1491 this->chan = channel;
1492 rc = wl3501_reset(dev);
1493 }
1494 return rc;
1495 }
1496
1497 static int wl3501_get_freq(struct net_device *dev, struct iw_request_info *info,
1498 union iwreq_data *wrqu, char *extra)
1499 {
1500 struct wl3501_card *this = netdev_priv(dev);
1501
1502 wrqu->freq.m = ieee80211_dsss_chan_to_freq(this->chan) * 100000;
1503 wrqu->freq.e = 1;
1504 return 0;
1505 }
1506
1507 static int wl3501_set_mode(struct net_device *dev, struct iw_request_info *info,
1508 union iwreq_data *wrqu, char *extra)
1509 {
1510 int rc = -EINVAL;
1511
1512 if (wrqu->mode == IW_MODE_INFRA ||
1513 wrqu->mode == IW_MODE_ADHOC ||
1514 wrqu->mode == IW_MODE_AUTO) {
1515 struct wl3501_card *this = netdev_priv(dev);
1516
1517 this->net_type = wrqu->mode;
1518 rc = wl3501_reset(dev);
1519 }
1520 return rc;
1521 }
1522
1523 static int wl3501_get_mode(struct net_device *dev, struct iw_request_info *info,
1524 union iwreq_data *wrqu, char *extra)
1525 {
1526 struct wl3501_card *this = netdev_priv(dev);
1527
1528 wrqu->mode = this->net_type;
1529 return 0;
1530 }
1531
1532 static int wl3501_get_sens(struct net_device *dev, struct iw_request_info *info,
1533 union iwreq_data *wrqu, char *extra)
1534 {
1535 struct wl3501_card *this = netdev_priv(dev);
1536
1537 wrqu->sens.value = this->rssi;
1538 wrqu->sens.disabled = !wrqu->sens.value;
1539 wrqu->sens.fixed = 1;
1540 return 0;
1541 }
1542
1543 static int wl3501_get_range(struct net_device *dev,
1544 struct iw_request_info *info,
1545 union iwreq_data *wrqu, char *extra)
1546 {
1547 struct iw_range *range = (struct iw_range *)extra;
1548
1549 /* Set the length (very important for backward compatibility) */
1550 wrqu->data.length = sizeof(*range);
1551
1552 /* Set all the info we don't care or don't know about to zero */
1553 memset(range, 0, sizeof(*range));
1554
1555 /* Set the Wireless Extension versions */
1556 range->we_version_compiled = WIRELESS_EXT;
1557 range->we_version_source = 1;
1558 range->throughput = 2 * 1000 * 1000; /* ~2 Mb/s */
1559 /* FIXME: study the code to fill in more fields... */
1560 return 0;
1561 }
1562
1563 static int wl3501_set_wap(struct net_device *dev, struct iw_request_info *info,
1564 union iwreq_data *wrqu, char *extra)
1565 {
1566 struct wl3501_card *this = netdev_priv(dev);
1567 static const u8 bcast[ETH_ALEN] = { 255, 255, 255, 255, 255, 255 };
1568 int rc = -EINVAL;
1569
1570 /* FIXME: we support other ARPHRDs...*/
1571 if (wrqu->ap_addr.sa_family != ARPHRD_ETHER)
1572 goto out;
1573 if (!memcmp(bcast, wrqu->ap_addr.sa_data, ETH_ALEN)) {
1574 /* FIXME: rescan? */
1575 } else
1576 memcpy(this->bssid, wrqu->ap_addr.sa_data, ETH_ALEN);
1577 /* FIXME: rescan? deassoc & scan? */
1578 rc = 0;
1579 out:
1580 return rc;
1581 }
1582
1583 static int wl3501_get_wap(struct net_device *dev, struct iw_request_info *info,
1584 union iwreq_data *wrqu, char *extra)
1585 {
1586 struct wl3501_card *this = netdev_priv(dev);
1587
1588 wrqu->ap_addr.sa_family = ARPHRD_ETHER;
1589 memcpy(wrqu->ap_addr.sa_data, this->bssid, ETH_ALEN);
1590 return 0;
1591 }
1592
1593 static int wl3501_set_scan(struct net_device *dev, struct iw_request_info *info,
1594 union iwreq_data *wrqu, char *extra)
1595 {
1596 /*
1597 * FIXME: trigger scanning with a reset, yes, I'm lazy
1598 */
1599 return wl3501_reset(dev);
1600 }
1601
1602 static int wl3501_get_scan(struct net_device *dev, struct iw_request_info *info,
1603 union iwreq_data *wrqu, char *extra)
1604 {
1605 struct wl3501_card *this = netdev_priv(dev);
1606 int i;
1607 char *current_ev = extra;
1608 struct iw_event iwe;
1609
1610 for (i = 0; i < this->bss_cnt; ++i) {
1611 iwe.cmd = SIOCGIWAP;
1612 iwe.u.ap_addr.sa_family = ARPHRD_ETHER;
1613 memcpy(iwe.u.ap_addr.sa_data, this->bss_set[i].bssid, ETH_ALEN);
1614 current_ev = iwe_stream_add_event(info, current_ev,
1615 extra + IW_SCAN_MAX_DATA,
1616 &iwe, IW_EV_ADDR_LEN);
1617 iwe.cmd = SIOCGIWESSID;
1618 iwe.u.data.flags = 1;
1619 iwe.u.data.length = this->bss_set[i].ssid.el.len;
1620 current_ev = iwe_stream_add_point(info, current_ev,
1621 extra + IW_SCAN_MAX_DATA,
1622 &iwe,
1623 this->bss_set[i].ssid.essid);
1624 iwe.cmd = SIOCGIWMODE;
1625 iwe.u.mode = this->bss_set[i].bss_type;
1626 current_ev = iwe_stream_add_event(info, current_ev,
1627 extra + IW_SCAN_MAX_DATA,
1628 &iwe, IW_EV_UINT_LEN);
1629 iwe.cmd = SIOCGIWFREQ;
1630 iwe.u.freq.m = this->bss_set[i].ds_pset.chan;
1631 iwe.u.freq.e = 0;
1632 current_ev = iwe_stream_add_event(info, current_ev,
1633 extra + IW_SCAN_MAX_DATA,
1634 &iwe, IW_EV_FREQ_LEN);
1635 iwe.cmd = SIOCGIWENCODE;
1636 if (this->bss_set[i].cap_info & WL3501_MGMT_CAPABILITY_PRIVACY)
1637 iwe.u.data.flags = IW_ENCODE_ENABLED | IW_ENCODE_NOKEY;
1638 else
1639 iwe.u.data.flags = IW_ENCODE_DISABLED;
1640 iwe.u.data.length = 0;
1641 current_ev = iwe_stream_add_point(info, current_ev,
1642 extra + IW_SCAN_MAX_DATA,
1643 &iwe, NULL);
1644 }
1645 /* Length of data */
1646 wrqu->data.length = (current_ev - extra);
1647 wrqu->data.flags = 0; /* FIXME: set properly these flags */
1648 return 0;
1649 }
1650
1651 static int wl3501_set_essid(struct net_device *dev,
1652 struct iw_request_info *info,
1653 union iwreq_data *wrqu, char *extra)
1654 {
1655 struct wl3501_card *this = netdev_priv(dev);
1656
1657 if (wrqu->data.flags) {
1658 iw_set_mgmt_info_element(IW_MGMT_INFO_ELEMENT_SSID,
1659 &this->essid.el,
1660 extra, wrqu->data.length);
1661 } else { /* We accept any ESSID */
1662 iw_set_mgmt_info_element(IW_MGMT_INFO_ELEMENT_SSID,
1663 &this->essid.el, "ANY", 3);
1664 }
1665 return wl3501_reset(dev);
1666 }
1667
1668 static int wl3501_get_essid(struct net_device *dev,
1669 struct iw_request_info *info,
1670 union iwreq_data *wrqu, char *extra)
1671 {
1672 struct wl3501_card *this = netdev_priv(dev);
1673 unsigned long flags;
1674
1675 spin_lock_irqsave(&this->lock, flags);
1676 wrqu->essid.flags = 1;
1677 wrqu->essid.length = this->essid.el.len;
1678 memcpy(extra, this->essid.essid, this->essid.el.len);
1679 spin_unlock_irqrestore(&this->lock, flags);
1680 return 0;
1681 }
1682
1683 static int wl3501_set_nick(struct net_device *dev, struct iw_request_info *info,
1684 union iwreq_data *wrqu, char *extra)
1685 {
1686 struct wl3501_card *this = netdev_priv(dev);
1687
1688 if (wrqu->data.length > sizeof(this->nick))
1689 return -E2BIG;
1690 strlcpy(this->nick, extra, wrqu->data.length);
1691 return 0;
1692 }
1693
1694 static int wl3501_get_nick(struct net_device *dev, struct iw_request_info *info,
1695 union iwreq_data *wrqu, char *extra)
1696 {
1697 struct wl3501_card *this = netdev_priv(dev);
1698
1699 strlcpy(extra, this->nick, 32);
1700 wrqu->data.length = strlen(extra);
1701 return 0;
1702 }
1703
1704 static int wl3501_get_rate(struct net_device *dev, struct iw_request_info *info,
1705 union iwreq_data *wrqu, char *extra)
1706 {
1707 /*
1708 * FIXME: have to see from where to get this info, perhaps this card
1709 * works at 1 Mbit/s too... for now leave at 2 Mbit/s that is the most
1710 * common with the Planet Access Points. -acme
1711 */
1712 wrqu->bitrate.value = 2000000;
1713 wrqu->bitrate.fixed = 1;
1714 return 0;
1715 }
1716
1717 static int wl3501_get_rts_threshold(struct net_device *dev,
1718 struct iw_request_info *info,
1719 union iwreq_data *wrqu, char *extra)
1720 {
1721 u16 threshold; /* size checked: it is u16 */
1722 struct wl3501_card *this = netdev_priv(dev);
1723 int rc = wl3501_get_mib_value(this, WL3501_MIB_ATTR_RTS_THRESHOLD,
1724 &threshold, sizeof(threshold));
1725 if (!rc) {
1726 wrqu->rts.value = threshold;
1727 wrqu->rts.disabled = threshold >= 2347;
1728 wrqu->rts.fixed = 1;
1729 }
1730 return rc;
1731 }
1732
1733 static int wl3501_get_frag_threshold(struct net_device *dev,
1734 struct iw_request_info *info,
1735 union iwreq_data *wrqu, char *extra)
1736 {
1737 u16 threshold; /* size checked: it is u16 */
1738 struct wl3501_card *this = netdev_priv(dev);
1739 int rc = wl3501_get_mib_value(this, WL3501_MIB_ATTR_FRAG_THRESHOLD,
1740 &threshold, sizeof(threshold));
1741 if (!rc) {
1742 wrqu->frag.value = threshold;
1743 wrqu->frag.disabled = threshold >= 2346;
1744 wrqu->frag.fixed = 1;
1745 }
1746 return rc;
1747 }
1748
1749 static int wl3501_get_txpow(struct net_device *dev,
1750 struct iw_request_info *info,
1751 union iwreq_data *wrqu, char *extra)
1752 {
1753 u16 txpow;
1754 struct wl3501_card *this = netdev_priv(dev);
1755 int rc = wl3501_get_mib_value(this,
1756 WL3501_MIB_ATTR_CURRENT_TX_PWR_LEVEL,
1757 &txpow, sizeof(txpow));
1758 if (!rc) {
1759 wrqu->txpower.value = txpow;
1760 wrqu->txpower.disabled = 0;
1761 /*
1762 * From the MIB values I think this can be configurable,
1763 * as it lists several tx power levels -acme
1764 */
1765 wrqu->txpower.fixed = 0;
1766 wrqu->txpower.flags = IW_TXPOW_MWATT;
1767 }
1768 return rc;
1769 }
1770
1771 static int wl3501_get_retry(struct net_device *dev,
1772 struct iw_request_info *info,
1773 union iwreq_data *wrqu, char *extra)
1774 {
1775 u8 retry; /* size checked: it is u8 */
1776 struct wl3501_card *this = netdev_priv(dev);
1777 int rc = wl3501_get_mib_value(this,
1778 WL3501_MIB_ATTR_LONG_RETRY_LIMIT,
1779 &retry, sizeof(retry));
1780 if (rc)
1781 goto out;
1782 if (wrqu->retry.flags & IW_RETRY_LONG) {
1783 wrqu->retry.flags = IW_RETRY_LIMIT | IW_RETRY_LONG;
1784 goto set_value;
1785 }
1786 rc = wl3501_get_mib_value(this, WL3501_MIB_ATTR_SHORT_RETRY_LIMIT,
1787 &retry, sizeof(retry));
1788 if (rc)
1789 goto out;
1790 wrqu->retry.flags = IW_RETRY_LIMIT | IW_RETRY_SHORT;
1791 set_value:
1792 wrqu->retry.value = retry;
1793 wrqu->retry.disabled = 0;
1794 out:
1795 return rc;
1796 }
1797
1798 static int wl3501_get_encode(struct net_device *dev,
1799 struct iw_request_info *info,
1800 union iwreq_data *wrqu, char *extra)
1801 {
1802 u8 implemented, restricted, keys[100], len_keys, tocopy;
1803 struct wl3501_card *this = netdev_priv(dev);
1804 int rc = wl3501_get_mib_value(this,
1805 WL3501_MIB_ATTR_PRIV_OPT_IMPLEMENTED,
1806 &implemented, sizeof(implemented));
1807 if (rc)
1808 goto out;
1809 if (!implemented) {
1810 wrqu->encoding.flags = IW_ENCODE_DISABLED;
1811 goto out;
1812 }
1813 rc = wl3501_get_mib_value(this, WL3501_MIB_ATTR_EXCLUDE_UNENCRYPTED,
1814 &restricted, sizeof(restricted));
1815 if (rc)
1816 goto out;
1817 wrqu->encoding.flags = restricted ? IW_ENCODE_RESTRICTED :
1818 IW_ENCODE_OPEN;
1819 rc = wl3501_get_mib_value(this, WL3501_MIB_ATTR_WEP_KEY_MAPPINGS_LEN,
1820 &len_keys, sizeof(len_keys));
1821 if (rc)
1822 goto out;
1823 rc = wl3501_get_mib_value(this, WL3501_MIB_ATTR_WEP_KEY_MAPPINGS,
1824 keys, len_keys);
1825 if (rc)
1826 goto out;
1827 tocopy = min_t(u8, len_keys, wrqu->encoding.length);
1828 tocopy = min_t(u8, tocopy, 100);
1829 wrqu->encoding.length = tocopy;
1830 memcpy(extra, keys, tocopy);
1831 out:
1832 return rc;
1833 }
1834
1835 static int wl3501_get_power(struct net_device *dev,
1836 struct iw_request_info *info,
1837 union iwreq_data *wrqu, char *extra)
1838 {
1839 u8 pwr_state;
1840 struct wl3501_card *this = netdev_priv(dev);
1841 int rc = wl3501_get_mib_value(this,
1842 WL3501_MIB_ATTR_CURRENT_PWR_STATE,
1843 &pwr_state, sizeof(pwr_state));
1844 if (rc)
1845 goto out;
1846 wrqu->power.disabled = !pwr_state;
1847 wrqu->power.flags = IW_POWER_ON;
1848 out:
1849 return rc;
1850 }
1851
1852 static const iw_handler wl3501_handler[] = {
1853 [SIOCGIWNAME - SIOCIWFIRST] = wl3501_get_name,
1854 [SIOCSIWFREQ - SIOCIWFIRST] = wl3501_set_freq,
1855 [SIOCGIWFREQ - SIOCIWFIRST] = wl3501_get_freq,
1856 [SIOCSIWMODE - SIOCIWFIRST] = wl3501_set_mode,
1857 [SIOCGIWMODE - SIOCIWFIRST] = wl3501_get_mode,
1858 [SIOCGIWSENS - SIOCIWFIRST] = wl3501_get_sens,
1859 [SIOCGIWRANGE - SIOCIWFIRST] = wl3501_get_range,
1860 [SIOCSIWSPY - SIOCIWFIRST] = iw_handler_set_spy,
1861 [SIOCGIWSPY - SIOCIWFIRST] = iw_handler_get_spy,
1862 [SIOCSIWTHRSPY - SIOCIWFIRST] = iw_handler_set_thrspy,
1863 [SIOCGIWTHRSPY - SIOCIWFIRST] = iw_handler_get_thrspy,
1864 [SIOCSIWAP - SIOCIWFIRST] = wl3501_set_wap,
1865 [SIOCGIWAP - SIOCIWFIRST] = wl3501_get_wap,
1866 [SIOCSIWSCAN - SIOCIWFIRST] = wl3501_set_scan,
1867 [SIOCGIWSCAN - SIOCIWFIRST] = wl3501_get_scan,
1868 [SIOCSIWESSID - SIOCIWFIRST] = wl3501_set_essid,
1869 [SIOCGIWESSID - SIOCIWFIRST] = wl3501_get_essid,
1870 [SIOCSIWNICKN - SIOCIWFIRST] = wl3501_set_nick,
1871 [SIOCGIWNICKN - SIOCIWFIRST] = wl3501_get_nick,
1872 [SIOCGIWRATE - SIOCIWFIRST] = wl3501_get_rate,
1873 [SIOCGIWRTS - SIOCIWFIRST] = wl3501_get_rts_threshold,
1874 [SIOCGIWFRAG - SIOCIWFIRST] = wl3501_get_frag_threshold,
1875 [SIOCGIWTXPOW - SIOCIWFIRST] = wl3501_get_txpow,
1876 [SIOCGIWRETRY - SIOCIWFIRST] = wl3501_get_retry,
1877 [SIOCGIWENCODE - SIOCIWFIRST] = wl3501_get_encode,
1878 [SIOCGIWPOWER - SIOCIWFIRST] = wl3501_get_power,
1879 };
1880
1881 static const struct iw_handler_def wl3501_handler_def = {
1882 .num_standard = ARRAY_SIZE(wl3501_handler),
1883 .standard = (iw_handler *)wl3501_handler,
1884 .get_wireless_stats = wl3501_get_wireless_stats,
1885 };
1886
1887 static const struct net_device_ops wl3501_netdev_ops = {
1888 .ndo_open = wl3501_open,
1889 .ndo_stop = wl3501_close,
1890 .ndo_start_xmit = wl3501_hard_start_xmit,
1891 .ndo_tx_timeout = wl3501_tx_timeout,
1892 .ndo_change_mtu = eth_change_mtu,
1893 .ndo_set_mac_address = eth_mac_addr,
1894 .ndo_validate_addr = eth_validate_addr,
1895 };
1896
1897 /**
1898 * wl3501_attach - creates an "instance" of the driver
1899 *
1900 * Creates an "instance" of the driver, allocating local data structures for
1901 * one device. The device is registered with Card Services.
1902 *
1903 * The dev_link structure is initialized, but we don't actually configure the
1904 * card at this point -- we wait until we receive a card insertion event.
1905 */
1906 static int wl3501_probe(struct pcmcia_device *p_dev)
1907 {
1908 struct net_device *dev;
1909 struct wl3501_card *this;
1910
1911 /* The io structure describes IO port mapping */
1912 p_dev->io.NumPorts1 = 16;
1913 p_dev->io.Attributes1 = IO_DATA_PATH_WIDTH_8;
1914 p_dev->io.IOAddrLines = 5;
1915
1916 /* Interrupt setup */
1917 p_dev->irq.Attributes = IRQ_TYPE_DYNAMIC_SHARING | IRQ_HANDLE_PRESENT;
1918 p_dev->irq.IRQInfo1 = IRQ_LEVEL_ID;
1919 p_dev->irq.Handler = wl3501_interrupt;
1920
1921 /* General socket configuration */
1922 p_dev->conf.Attributes = CONF_ENABLE_IRQ;
1923 p_dev->conf.IntType = INT_MEMORY_AND_IO;
1924 p_dev->conf.ConfigIndex = 1;
1925
1926 dev = alloc_etherdev(sizeof(struct wl3501_card));
1927 if (!dev)
1928 goto out_link;
1929
1930
1931 dev->netdev_ops = &wl3501_netdev_ops;
1932 dev->watchdog_timeo = 5 * HZ;
1933
1934 this = netdev_priv(dev);
1935 this->wireless_data.spy_data = &this->spy_data;
1936 this->p_dev = p_dev;
1937 dev->wireless_data = &this->wireless_data;
1938 dev->wireless_handlers = &wl3501_handler_def;
1939 SET_ETHTOOL_OPS(dev, &ops);
1940 netif_stop_queue(dev);
1941 p_dev->priv = p_dev->irq.Instance = dev;
1942
1943 return wl3501_config(p_dev);
1944 out_link:
1945 return -ENOMEM;
1946 }
1947
1948 #define CS_CHECK(fn, ret) \
1949 do { last_fn = (fn); if ((last_ret = (ret)) != 0) goto cs_failed; } while (0)
1950
1951 /**
1952 * wl3501_config - configure the PCMCIA socket and make eth device available
1953 * @link - FILL_IN
1954 *
1955 * wl3501_config() is scheduled to run after a CARD_INSERTION event is
1956 * received, to configure the PCMCIA socket, and to make the ethernet device
1957 * available to the system.
1958 */
1959 static int wl3501_config(struct pcmcia_device *link)
1960 {
1961 struct net_device *dev = link->priv;
1962 int i = 0, j, last_fn, last_ret;
1963 struct wl3501_card *this;
1964
1965 /* Try allocating IO ports. This tries a few fixed addresses. If you
1966 * want, you can also read the card's config table to pick addresses --
1967 * see the serial driver for an example. */
1968
1969 for (j = 0x280; j < 0x400; j += 0x20) {
1970 /* The '^0x300' is so that we probe 0x300-0x3ff first, then
1971 * 0x200-0x2ff, and so on, because this seems safer */
1972 link->io.BasePort1 = j;
1973 link->io.BasePort2 = link->io.BasePort1 + 0x10;
1974 i = pcmcia_request_io(link, &link->io);
1975 if (i == 0)
1976 break;
1977 }
1978 if (i != 0) {
1979 cs_error(link, RequestIO, i);
1980 goto failed;
1981 }
1982
1983 /* Now allocate an interrupt line. Note that this does not actually
1984 * assign a handler to the interrupt. */
1985
1986 CS_CHECK(RequestIRQ, pcmcia_request_irq(link, &link->irq));
1987
1988 /* This actually configures the PCMCIA socket -- setting up the I/O
1989 * windows and the interrupt mapping. */
1990
1991 CS_CHECK(RequestConfiguration, pcmcia_request_configuration(link, &link->conf));
1992
1993 dev->irq = link->irq.AssignedIRQ;
1994 dev->base_addr = link->io.BasePort1;
1995 SET_NETDEV_DEV(dev, &handle_to_dev(link));
1996 if (register_netdev(dev)) {
1997 printk(KERN_NOTICE "wl3501_cs: register_netdev() failed\n");
1998 goto failed;
1999 }
2000
2001 this = netdev_priv(dev);
2002 /*
2003 * At this point, the dev_node_t structure(s) should be initialized and
2004 * arranged in a linked list at link->dev_node.
2005 */
2006 link->dev_node = &this->node;
2007
2008 this->base_addr = dev->base_addr;
2009
2010 if (!wl3501_get_flash_mac_addr(this)) {
2011 printk(KERN_WARNING "%s: Cant read MAC addr in flash ROM?\n",
2012 dev->name);
2013 goto failed;
2014 }
2015 strcpy(this->node.dev_name, dev->name);
2016
2017 for (i = 0; i < 6; i++)
2018 dev->dev_addr[i] = ((char *)&this->mac_addr)[i];
2019
2020 /* print probe information */
2021 printk(KERN_INFO "%s: wl3501 @ 0x%3.3x, IRQ %d, "
2022 "MAC addr in flash ROM:%pM\n",
2023 dev->name, this->base_addr, (int)dev->irq,
2024 dev->dev_addr);
2025 /*
2026 * Initialize card parameters - added by jss
2027 */
2028 this->net_type = IW_MODE_INFRA;
2029 this->bss_cnt = 0;
2030 this->join_sta_bss = 0;
2031 this->adhoc_times = 0;
2032 iw_set_mgmt_info_element(IW_MGMT_INFO_ELEMENT_SSID, &this->essid.el,
2033 "ANY", 3);
2034 this->card_name[0] = '\0';
2035 this->firmware_date[0] = '\0';
2036 this->rssi = 255;
2037 this->chan = iw_default_channel(this->reg_domain);
2038 strlcpy(this->nick, "Planet WL3501", sizeof(this->nick));
2039 spin_lock_init(&this->lock);
2040 init_waitqueue_head(&this->wait);
2041 netif_start_queue(dev);
2042 return 0;
2043
2044 cs_failed:
2045 cs_error(link, last_fn, last_ret);
2046 failed:
2047 wl3501_release(link);
2048 return -ENODEV;
2049 }
2050
2051 /**
2052 * wl3501_release - unregister the net, release PCMCIA configuration
2053 * @arg - link
2054 *
2055 * After a card is removed, wl3501_release() will unregister the net device,
2056 * and release the PCMCIA configuration. If the device is still open, this
2057 * will be postponed until it is closed.
2058 */
2059 static void wl3501_release(struct pcmcia_device *link)
2060 {
2061 struct net_device *dev = link->priv;
2062
2063 /* Unlink the device chain */
2064 if (link->dev_node)
2065 unregister_netdev(dev);
2066
2067 pcmcia_disable_device(link);
2068 }
2069
2070 static int wl3501_suspend(struct pcmcia_device *link)
2071 {
2072 struct net_device *dev = link->priv;
2073
2074 wl3501_pwr_mgmt(netdev_priv(dev), WL3501_SUSPEND);
2075 if (link->open)
2076 netif_device_detach(dev);
2077
2078 return 0;
2079 }
2080
2081 static int wl3501_resume(struct pcmcia_device *link)
2082 {
2083 struct net_device *dev = link->priv;
2084
2085 wl3501_pwr_mgmt(netdev_priv(dev), WL3501_RESUME);
2086 if (link->open) {
2087 wl3501_reset(dev);
2088 netif_device_attach(dev);
2089 }
2090
2091 return 0;
2092 }
2093
2094
2095 static struct pcmcia_device_id wl3501_ids[] = {
2096 PCMCIA_DEVICE_MANF_CARD(0xd601, 0x0001),
2097 PCMCIA_DEVICE_NULL
2098 };
2099 MODULE_DEVICE_TABLE(pcmcia, wl3501_ids);
2100
2101 static struct pcmcia_driver wl3501_driver = {
2102 .owner = THIS_MODULE,
2103 .drv = {
2104 .name = "wl3501_cs",
2105 },
2106 .probe = wl3501_probe,
2107 .remove = wl3501_detach,
2108 .id_table = wl3501_ids,
2109 .suspend = wl3501_suspend,
2110 .resume = wl3501_resume,
2111 };
2112
2113 static int __init wl3501_init_module(void)
2114 {
2115 return pcmcia_register_driver(&wl3501_driver);
2116 }
2117
2118 static void __exit wl3501_exit_module(void)
2119 {
2120 pcmcia_unregister_driver(&wl3501_driver);
2121 }
2122
2123 module_init(wl3501_init_module);
2124 module_exit(wl3501_exit_module);
2125
2126 MODULE_AUTHOR("Fox Chen <mhchen@golf.ccl.itri.org.tw>, "
2127 "Arnaldo Carvalho de Melo <acme@conectiva.com.br>,"
2128 "Gustavo Niemeyer <niemeyer@conectiva.com>");
2129 MODULE_DESCRIPTION("Planet wl3501 wireless driver");
2130 MODULE_LICENSE("GPL");
Linux for Ginger Game Console