pcmcia: convert pcmcia_request_configuration to pcmcia_enable_device
[linux-2.6.git] / drivers / net / wireless / wl3501_cs.c
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/cistpl.h>
52 #include <pcmcia/cisreg.h>
53 #include <pcmcia/ds.h>
54
55 #include <asm/io.h>
56 #include <asm/uaccess.h>
57 #include <asm/system.h>
58
59 #include "wl3501.h"
60
61 #ifndef __i386__
62 #define slow_down_io()
63 #endif
64
65 /* For rough constant delay */
66 #define WL3501_NOPLOOP(n) { int x = 0; while (x++ < n) slow_down_io(); }
67
68
69
70 #define wl3501_outb(a, b) { outb(a, b); slow_down_io(); }
71 #define wl3501_outb_p(a, b) { outb_p(a, b); slow_down_io(); }
72 #define wl3501_outsb(a, b, c) { outsb(a, b, c); slow_down_io(); }
73
74 #define WL3501_RELEASE_TIMEOUT (25 * HZ)
75 #define WL3501_MAX_ADHOC_TRIES 16
76
77 #define WL3501_RESUME   0
78 #define WL3501_SUSPEND  1
79
80 /*
81  * The event() function is this driver's Card Services event handler.  It will
82  * be called by Card Services when an appropriate card status event is
83  * received. The config() and release() entry points are used to configure or
84  * release a socket, in response to card insertion and ejection events.  They
85  * are invoked from the wl24 event handler.
86  */
87 static int wl3501_config(struct pcmcia_device *link);
88 static void wl3501_release(struct pcmcia_device *link);
89
90 static const struct {
91         int reg_domain;
92         int min, max, deflt;
93 } iw_channel_table[] = {
94         {
95                 .reg_domain = IW_REG_DOMAIN_FCC,
96                 .min        = 1,
97                 .max        = 11,
98                 .deflt      = 1,
99         },
100         {
101                 .reg_domain = IW_REG_DOMAIN_DOC,
102                 .min        = 1,
103                 .max        = 11,
104                 .deflt      = 1,
105         },
106         {
107                 .reg_domain = IW_REG_DOMAIN_ETSI,
108                 .min        = 1,
109                 .max        = 13,
110                 .deflt      = 1,
111         },
112         {
113                 .reg_domain = IW_REG_DOMAIN_SPAIN,
114                 .min        = 10,
115                 .max        = 11,
116                 .deflt      = 10,
117         },
118         {
119                 .reg_domain = IW_REG_DOMAIN_FRANCE,
120                 .min        = 10,
121                 .max        = 13,
122                 .deflt      = 10,
123         },
124         {
125                 .reg_domain = IW_REG_DOMAIN_MKK,
126                 .min        = 14,
127                 .max        = 14,
128                 .deflt      = 14,
129         },
130         {
131                 .reg_domain = IW_REG_DOMAIN_MKK1,
132                 .min        = 1,
133                 .max        = 14,
134                 .deflt      = 1,
135         },
136         {
137                 .reg_domain = IW_REG_DOMAIN_ISRAEL,
138                 .min        = 3,
139                 .max        = 9,
140                 .deflt      = 9,
141         },
142 };
143
144 /**
145  * iw_valid_channel - validate channel in regulatory domain
146  * @reg_comain - regulatory domain
147  * @channel - channel to validate
148  *
149  * Returns 0 if invalid in the specified regulatory domain, non-zero if valid.
150  */
151 static int iw_valid_channel(int reg_domain, int channel)
152 {
153         int i, rc = 0;
154
155         for (i = 0; i < ARRAY_SIZE(iw_channel_table); i++)
156                 if (reg_domain == iw_channel_table[i].reg_domain) {
157                         rc = channel >= iw_channel_table[i].min &&
158                              channel <= iw_channel_table[i].max;
159                         break;
160                 }
161         return rc;
162 }
163
164 /**
165  * iw_default_channel - get default channel for a regulatory domain
166  * @reg_comain - regulatory domain
167  *
168  * Returns the default channel for a regulatory domain
169  */
170 static int iw_default_channel(int reg_domain)
171 {
172         int i, rc = 1;
173
174         for (i = 0; i < ARRAY_SIZE(iw_channel_table); i++)
175                 if (reg_domain == iw_channel_table[i].reg_domain) {
176                         rc = iw_channel_table[i].deflt;
177                         break;
178                 }
179         return rc;
180 }
181
182 static void iw_set_mgmt_info_element(enum iw_mgmt_info_element_ids id,
183                                      struct iw_mgmt_info_element *el,
184                                      void *value, int len)
185 {
186         el->id  = id;
187         el->len = len;
188         memcpy(el->data, value, len);
189 }
190
191 static void iw_copy_mgmt_info_element(struct iw_mgmt_info_element *to,
192                                       struct iw_mgmt_info_element *from)
193 {
194         iw_set_mgmt_info_element(from->id, to, from->data, from->len);
195 }
196
197 static inline void wl3501_switch_page(struct wl3501_card *this, u8 page)
198 {
199         wl3501_outb(page, this->base_addr + WL3501_NIC_BSS);
200 }
201
202 /*
203  * Get Ethernet MAC addresss.
204  *
205  * WARNING: We switch to FPAGE0 and switc back again.
206  *          Making sure there is no other WL function beening called by ISR.
207  */
208 static int wl3501_get_flash_mac_addr(struct wl3501_card *this)
209 {
210         int base_addr = this->base_addr;
211
212         /* get MAC addr */
213         wl3501_outb(WL3501_BSS_FPAGE3, base_addr + WL3501_NIC_BSS); /* BSS */
214         wl3501_outb(0x00, base_addr + WL3501_NIC_LMAL); /* LMAL */
215         wl3501_outb(0x40, base_addr + WL3501_NIC_LMAH); /* LMAH */
216
217         /* wait for reading EEPROM */
218         WL3501_NOPLOOP(100);
219         this->mac_addr[0] = inb(base_addr + WL3501_NIC_IODPA);
220         WL3501_NOPLOOP(100);
221         this->mac_addr[1] = inb(base_addr + WL3501_NIC_IODPA);
222         WL3501_NOPLOOP(100);
223         this->mac_addr[2] = inb(base_addr + WL3501_NIC_IODPA);
224         WL3501_NOPLOOP(100);
225         this->mac_addr[3] = inb(base_addr + WL3501_NIC_IODPA);
226         WL3501_NOPLOOP(100);
227         this->mac_addr[4] = inb(base_addr + WL3501_NIC_IODPA);
228         WL3501_NOPLOOP(100);
229         this->mac_addr[5] = inb(base_addr + WL3501_NIC_IODPA);
230         WL3501_NOPLOOP(100);
231         this->reg_domain = inb(base_addr + WL3501_NIC_IODPA);
232         WL3501_NOPLOOP(100);
233         wl3501_outb(WL3501_BSS_FPAGE0, base_addr + WL3501_NIC_BSS);
234         wl3501_outb(0x04, base_addr + WL3501_NIC_LMAL);
235         wl3501_outb(0x40, base_addr + WL3501_NIC_LMAH);
236         WL3501_NOPLOOP(100);
237         this->version[0] = inb(base_addr + WL3501_NIC_IODPA);
238         WL3501_NOPLOOP(100);
239         this->version[1] = inb(base_addr + WL3501_NIC_IODPA);
240         /* switch to SRAM Page 0 (for safety) */
241         wl3501_switch_page(this, WL3501_BSS_SPAGE0);
242
243         /* The MAC addr should be 00:60:... */
244         return this->mac_addr[0] == 0x00 && this->mac_addr[1] == 0x60;
245 }
246
247 /**
248  * wl3501_set_to_wla - Move 'size' bytes from PC to card
249  * @dest: Card addressing space
250  * @src: PC addressing space
251  * @size: Bytes to move
252  *
253  * Move 'size' bytes from PC to card. (Shouldn't be interrupted)
254  */
255 static void wl3501_set_to_wla(struct wl3501_card *this, u16 dest, void *src,
256                               int size)
257 {
258         /* switch to SRAM Page 0 */
259         wl3501_switch_page(this, (dest & 0x8000) ? WL3501_BSS_SPAGE1 :
260                                                    WL3501_BSS_SPAGE0);
261         /* set LMAL and LMAH */
262         wl3501_outb(dest & 0xff, this->base_addr + WL3501_NIC_LMAL);
263         wl3501_outb(((dest >> 8) & 0x7f), this->base_addr + WL3501_NIC_LMAH);
264
265         /* rep out to Port A */
266         wl3501_outsb(this->base_addr + WL3501_NIC_IODPA, src, size);
267 }
268
269 /**
270  * wl3501_get_from_wla - Move 'size' bytes from card to PC
271  * @src: Card addressing space
272  * @dest: PC addressing space
273  * @size: Bytes to move
274  *
275  * Move 'size' bytes from card to PC. (Shouldn't be interrupted)
276  */
277 static void wl3501_get_from_wla(struct wl3501_card *this, u16 src, void *dest,
278                                 int size)
279 {
280         /* switch to SRAM Page 0 */
281         wl3501_switch_page(this, (src & 0x8000) ? WL3501_BSS_SPAGE1 :
282                                                   WL3501_BSS_SPAGE0);
283         /* set LMAL and LMAH */
284         wl3501_outb(src & 0xff, this->base_addr + WL3501_NIC_LMAL);
285         wl3501_outb((src >> 8) & 0x7f, this->base_addr + WL3501_NIC_LMAH);
286
287         /* rep get from Port A */
288         insb(this->base_addr + WL3501_NIC_IODPA, dest, size);
289 }
290
291 /*
292  * Get/Allocate a free Tx Data Buffer
293  *
294  *  *--------------*-----------------*----------------------------------*
295  *  |    PLCP      |    MAC Header   |  DST  SRC         Data ...       |
296  *  |  (24 bytes)  |    (30 bytes)   |  (6)  (6)  (Ethernet Row Data)   |
297  *  *--------------*-----------------*----------------------------------*
298  *  \               \- IEEE 802.11 -/ \-------------- len --------------/
299  *   \-struct wl3501_80211_tx_hdr--/   \-------- Ethernet Frame -------/
300  *
301  * Return = Postion in Card
302  */
303 static u16 wl3501_get_tx_buffer(struct wl3501_card *this, u16 len)
304 {
305         u16 next, blk_cnt = 0, zero = 0;
306         u16 full_len = sizeof(struct wl3501_80211_tx_hdr) + len;
307         u16 ret = 0;
308
309         if (full_len > this->tx_buffer_cnt * 254)
310                 goto out;
311         ret = this->tx_buffer_head;
312         while (full_len) {
313                 if (full_len < 254)
314                         full_len = 0;
315                 else
316                         full_len -= 254;
317                 wl3501_get_from_wla(this, this->tx_buffer_head, &next,
318                                     sizeof(next));
319                 if (!full_len)
320                         wl3501_set_to_wla(this, this->tx_buffer_head, &zero,
321                                           sizeof(zero));
322                 this->tx_buffer_head = next;
323                 blk_cnt++;
324                 /* if buffer is not enough */
325                 if (!next && full_len) {
326                         this->tx_buffer_head = ret;
327                         ret = 0;
328                         goto out;
329                 }
330         }
331         this->tx_buffer_cnt -= blk_cnt;
332 out:
333         return ret;
334 }
335
336 /*
337  * Free an allocated Tx Buffer. ptr must be correct position.
338  */
339 static void wl3501_free_tx_buffer(struct wl3501_card *this, u16 ptr)
340 {
341         /* check if all space is not free */
342         if (!this->tx_buffer_head)
343                 this->tx_buffer_head = ptr;
344         else
345                 wl3501_set_to_wla(this, this->tx_buffer_tail,
346                                   &ptr, sizeof(ptr));
347         while (ptr) {
348                 u16 next;
349
350                 this->tx_buffer_cnt++;
351                 wl3501_get_from_wla(this, ptr, &next, sizeof(next));
352                 this->tx_buffer_tail = ptr;
353                 ptr = next;
354         }
355 }
356
357 static int wl3501_esbq_req_test(struct wl3501_card *this)
358 {
359         u8 tmp = 0;
360
361         wl3501_get_from_wla(this, this->esbq_req_head + 3, &tmp, sizeof(tmp));
362         return tmp & 0x80;
363 }
364
365 static void wl3501_esbq_req(struct wl3501_card *this, u16 *ptr)
366 {
367         u16 tmp = 0;
368
369         wl3501_set_to_wla(this, this->esbq_req_head, ptr, 2);
370         wl3501_set_to_wla(this, this->esbq_req_head + 2, &tmp, sizeof(tmp));
371         this->esbq_req_head += 4;
372         if (this->esbq_req_head >= this->esbq_req_end)
373                 this->esbq_req_head = this->esbq_req_start;
374 }
375
376 static int wl3501_esbq_exec(struct wl3501_card *this, void *sig, int sig_size)
377 {
378         int rc = -EIO;
379
380         if (wl3501_esbq_req_test(this)) {
381                 u16 ptr = wl3501_get_tx_buffer(this, sig_size);
382                 if (ptr) {
383                         wl3501_set_to_wla(this, ptr, sig, sig_size);
384                         wl3501_esbq_req(this, &ptr);
385                         rc = 0;
386                 }
387         }
388         return rc;
389 }
390
391 static int wl3501_get_mib_value(struct wl3501_card *this, u8 index,
392                                 void *bf, int size)
393 {
394         struct wl3501_get_req sig = {
395                 .sig_id     = WL3501_SIG_GET_REQ,
396                 .mib_attrib = index,
397         };
398         unsigned long flags;
399         int rc = -EIO;
400
401         spin_lock_irqsave(&this->lock, flags);
402         if (wl3501_esbq_req_test(this)) {
403                 u16 ptr = wl3501_get_tx_buffer(this, sizeof(sig));
404                 if (ptr) {
405                         wl3501_set_to_wla(this, ptr, &sig, sizeof(sig));
406                         wl3501_esbq_req(this, &ptr);
407                         this->sig_get_confirm.mib_status = 255;
408                         spin_unlock_irqrestore(&this->lock, flags);
409                         rc = wait_event_interruptible(this->wait,
410                                 this->sig_get_confirm.mib_status != 255);
411                         if (!rc)
412                                 memcpy(bf, this->sig_get_confirm.mib_value,
413                                        size);
414                         goto out;
415                 }
416         }
417         spin_unlock_irqrestore(&this->lock, flags);
418 out:
419         return rc;
420 }
421
422 static int wl3501_pwr_mgmt(struct wl3501_card *this, int suspend)
423 {
424         struct wl3501_pwr_mgmt_req sig = {
425                 .sig_id         = WL3501_SIG_PWR_MGMT_REQ,
426                 .pwr_save       = suspend,
427                 .wake_up        = !suspend,
428                 .receive_dtims  = 10,
429         };
430         unsigned long flags;
431         int rc = -EIO;
432
433         spin_lock_irqsave(&this->lock, flags);
434         if (wl3501_esbq_req_test(this)) {
435                 u16 ptr = wl3501_get_tx_buffer(this, sizeof(sig));
436                 if (ptr) {
437                         wl3501_set_to_wla(this, ptr, &sig, sizeof(sig));
438                         wl3501_esbq_req(this, &ptr);
439                         this->sig_pwr_mgmt_confirm.status = 255;
440                         spin_unlock_irqrestore(&this->lock, flags);
441                         rc = wait_event_interruptible(this->wait,
442                                 this->sig_pwr_mgmt_confirm.status != 255);
443                         printk(KERN_INFO "%s: %s status=%d\n", __func__,
444                                suspend ? "suspend" : "resume",
445                                this->sig_pwr_mgmt_confirm.status);
446                         goto out;
447                 }
448         }
449         spin_unlock_irqrestore(&this->lock, flags);
450 out:
451         return rc;
452 }
453
454 /**
455  * wl3501_send_pkt - Send a packet.
456  * @this - card
457  *
458  * Send a packet.
459  *
460  * data = Ethernet raw frame.  (e.g. data[0] - data[5] is Dest MAC Addr,
461  *                                   data[6] - data[11] is Src MAC Addr)
462  * Ref: IEEE 802.11
463  */
464 static int wl3501_send_pkt(struct wl3501_card *this, u8 *data, u16 len)
465 {
466         u16 bf, sig_bf, next, tmplen, pktlen;
467         struct wl3501_md_req sig = {
468                 .sig_id = WL3501_SIG_MD_REQ,
469         };
470         u8 *pdata = (char *)data;
471         int rc = -EIO;
472
473         if (wl3501_esbq_req_test(this)) {
474                 sig_bf = wl3501_get_tx_buffer(this, sizeof(sig));
475                 rc = -ENOMEM;
476                 if (!sig_bf)    /* No free buffer available */
477                         goto out;
478                 bf = wl3501_get_tx_buffer(this, len + 26 + 24);
479                 if (!bf) {
480                         /* No free buffer available */
481                         wl3501_free_tx_buffer(this, sig_bf);
482                         goto out;
483                 }
484                 rc = 0;
485                 memcpy(&sig.daddr[0], pdata, 12);
486                 pktlen = len - 12;
487                 pdata += 12;
488                 sig.data = bf;
489                 if (((*pdata) * 256 + (*(pdata + 1))) > 1500) {
490                         u8 addr4[ETH_ALEN] = {
491                                 [0] = 0xAA, [1] = 0xAA, [2] = 0x03, [4] = 0x00,
492                         };
493
494                         wl3501_set_to_wla(this, bf + 2 +
495                                           offsetof(struct wl3501_tx_hdr, addr4),
496                                           addr4, sizeof(addr4));
497                         sig.size = pktlen + 24 + 4 + 6;
498                         if (pktlen > (254 - sizeof(struct wl3501_tx_hdr))) {
499                                 tmplen = 254 - sizeof(struct wl3501_tx_hdr);
500                                 pktlen -= tmplen;
501                         } else {
502                                 tmplen = pktlen;
503                                 pktlen = 0;
504                         }
505                         wl3501_set_to_wla(this,
506                                           bf + 2 + sizeof(struct wl3501_tx_hdr),
507                                           pdata, tmplen);
508                         pdata += tmplen;
509                         wl3501_get_from_wla(this, bf, &next, sizeof(next));
510                         bf = next;
511                 } else {
512                         sig.size = pktlen + 24 + 4 - 2;
513                         pdata += 2;
514                         pktlen -= 2;
515                         if (pktlen > (254 - sizeof(struct wl3501_tx_hdr) + 6)) {
516                                 tmplen = 254 - sizeof(struct wl3501_tx_hdr) + 6;
517                                 pktlen -= tmplen;
518                         } else {
519                                 tmplen = pktlen;
520                                 pktlen = 0;
521                         }
522                         wl3501_set_to_wla(this, bf + 2 +
523                                           offsetof(struct wl3501_tx_hdr, addr4),
524                                           pdata, tmplen);
525                         pdata += tmplen;
526                         wl3501_get_from_wla(this, bf, &next, sizeof(next));
527                         bf = next;
528                 }
529                 while (pktlen > 0) {
530                         if (pktlen > 254) {
531                                 tmplen = 254;
532                                 pktlen -= 254;
533                         } else {
534                                 tmplen = pktlen;
535                                 pktlen = 0;
536                         }
537                         wl3501_set_to_wla(this, bf + 2, pdata, tmplen);
538                         pdata += tmplen;
539                         wl3501_get_from_wla(this, bf, &next, sizeof(next));
540                         bf = next;
541                 }
542                 wl3501_set_to_wla(this, sig_bf, &sig, sizeof(sig));
543                 wl3501_esbq_req(this, &sig_bf);
544         }
545 out:
546         return rc;
547 }
548
549 static int wl3501_mgmt_resync(struct wl3501_card *this)
550 {
551         struct wl3501_resync_req sig = {
552                 .sig_id = WL3501_SIG_RESYNC_REQ,
553         };
554
555         return wl3501_esbq_exec(this, &sig, sizeof(sig));
556 }
557
558 static inline int wl3501_fw_bss_type(struct wl3501_card *this)
559 {
560         return this->net_type == IW_MODE_INFRA ? WL3501_NET_TYPE_INFRA :
561                                                  WL3501_NET_TYPE_ADHOC;
562 }
563
564 static inline int wl3501_fw_cap_info(struct wl3501_card *this)
565 {
566         return this->net_type == IW_MODE_INFRA ? WL3501_MGMT_CAPABILITY_ESS :
567                                                  WL3501_MGMT_CAPABILITY_IBSS;
568 }
569
570 static int wl3501_mgmt_scan(struct wl3501_card *this, u16 chan_time)
571 {
572         struct wl3501_scan_req sig = {
573                 .sig_id         = WL3501_SIG_SCAN_REQ,
574                 .scan_type      = WL3501_SCAN_TYPE_ACTIVE,
575                 .probe_delay    = 0x10,
576                 .min_chan_time  = chan_time,
577                 .max_chan_time  = chan_time,
578                 .bss_type       = wl3501_fw_bss_type(this),
579         };
580
581         this->bss_cnt = this->join_sta_bss = 0;
582         return wl3501_esbq_exec(this, &sig, sizeof(sig));
583 }
584
585 static int wl3501_mgmt_join(struct wl3501_card *this, u16 stas)
586 {
587         struct wl3501_join_req sig = {
588                 .sig_id           = WL3501_SIG_JOIN_REQ,
589                 .timeout          = 10,
590                 .ds_pset = {
591                         .el = {
592                                 .id  = IW_MGMT_INFO_ELEMENT_DS_PARAMETER_SET,
593                                 .len = 1,
594                         },
595                         .chan   = this->chan,
596                 },
597         };
598
599         memcpy(&sig.beacon_period, &this->bss_set[stas].beacon_period, 72);
600         return wl3501_esbq_exec(this, &sig, sizeof(sig));
601 }
602
603 static int wl3501_mgmt_start(struct wl3501_card *this)
604 {
605         struct wl3501_start_req sig = {
606                 .sig_id                 = WL3501_SIG_START_REQ,
607                 .beacon_period          = 400,
608                 .dtim_period            = 1,
609                 .ds_pset = {
610                         .el = {
611                                 .id  = IW_MGMT_INFO_ELEMENT_DS_PARAMETER_SET,
612                                 .len = 1,
613                         },
614                         .chan   = this->chan,
615                 },
616                 .bss_basic_rset = {
617                         .el = {
618                                 .id     = IW_MGMT_INFO_ELEMENT_SUPPORTED_RATES,
619                                 .len = 2,
620                         },
621                         .data_rate_labels = {
622                                 [0] = IW_MGMT_RATE_LABEL_MANDATORY |
623                                       IW_MGMT_RATE_LABEL_1MBIT,
624                                 [1] = IW_MGMT_RATE_LABEL_MANDATORY |
625                                       IW_MGMT_RATE_LABEL_2MBIT,
626                         },
627                 },
628                 .operational_rset       = {
629                         .el = {
630                                 .id     = IW_MGMT_INFO_ELEMENT_SUPPORTED_RATES,
631                                 .len = 2,
632                         },
633                         .data_rate_labels = {
634                                 [0] = IW_MGMT_RATE_LABEL_MANDATORY |
635                                       IW_MGMT_RATE_LABEL_1MBIT,
636                                 [1] = IW_MGMT_RATE_LABEL_MANDATORY |
637                                       IW_MGMT_RATE_LABEL_2MBIT,
638                         },
639                 },
640                 .ibss_pset              = {
641                         .el = {
642                                 .id      = IW_MGMT_INFO_ELEMENT_IBSS_PARAMETER_SET,
643                                 .len     = 2,
644                         },
645                         .atim_window = 10,
646                 },
647                 .bss_type               = wl3501_fw_bss_type(this),
648                 .cap_info               = wl3501_fw_cap_info(this),
649         };
650
651         iw_copy_mgmt_info_element(&sig.ssid.el, &this->essid.el);
652         iw_copy_mgmt_info_element(&this->keep_essid.el, &this->essid.el);
653         return wl3501_esbq_exec(this, &sig, sizeof(sig));
654 }
655
656 static void wl3501_mgmt_scan_confirm(struct wl3501_card *this, u16 addr)
657 {
658         u16 i = 0;
659         int matchflag = 0;
660         struct wl3501_scan_confirm sig;
661
662         pr_debug("entry");
663         wl3501_get_from_wla(this, addr, &sig, sizeof(sig));
664         if (sig.status == WL3501_STATUS_SUCCESS) {
665                 pr_debug("success");
666                 if ((this->net_type == IW_MODE_INFRA &&
667                      (sig.cap_info & WL3501_MGMT_CAPABILITY_ESS)) ||
668                     (this->net_type == IW_MODE_ADHOC &&
669                      (sig.cap_info & WL3501_MGMT_CAPABILITY_IBSS)) ||
670                     this->net_type == IW_MODE_AUTO) {
671                         if (!this->essid.el.len)
672                                 matchflag = 1;
673                         else if (this->essid.el.len == 3 &&
674                                  !memcmp(this->essid.essid, "ANY", 3))
675                                 matchflag = 1;
676                         else if (this->essid.el.len != sig.ssid.el.len)
677                                 matchflag = 0;
678                         else if (memcmp(this->essid.essid, sig.ssid.essid,
679                                         this->essid.el.len))
680                                 matchflag = 0;
681                         else
682                                 matchflag = 1;
683                         if (matchflag) {
684                                 for (i = 0; i < this->bss_cnt; i++) {
685                                         if (!memcmp(this->bss_set[i].bssid,
686                                                     sig.bssid, ETH_ALEN)) {
687                                                 matchflag = 0;
688                                                 break;
689                                         }
690                                 }
691                         }
692                         if (matchflag && (i < 20)) {
693                                 memcpy(&this->bss_set[i].beacon_period,
694                                        &sig.beacon_period, 73);
695                                 this->bss_cnt++;
696                                 this->rssi = sig.rssi;
697                         }
698                 }
699         } else if (sig.status == WL3501_STATUS_TIMEOUT) {
700                 pr_debug("timeout");
701                 this->join_sta_bss = 0;
702                 for (i = this->join_sta_bss; i < this->bss_cnt; i++)
703                         if (!wl3501_mgmt_join(this, i))
704                                 break;
705                 this->join_sta_bss = i;
706                 if (this->join_sta_bss == this->bss_cnt) {
707                         if (this->net_type == IW_MODE_INFRA)
708                                 wl3501_mgmt_scan(this, 100);
709                         else {
710                                 this->adhoc_times++;
711                                 if (this->adhoc_times > WL3501_MAX_ADHOC_TRIES)
712                                         wl3501_mgmt_start(this);
713                                 else
714                                         wl3501_mgmt_scan(this, 100);
715                         }
716                 }
717         }
718 }
719
720 /**
721  * wl3501_block_interrupt - Mask interrupt from SUTRO
722  * @this - card
723  *
724  * Mask interrupt from SUTRO. (i.e. SUTRO cannot interrupt the HOST)
725  * Return: 1 if interrupt is originally enabled
726  */
727 static int wl3501_block_interrupt(struct wl3501_card *this)
728 {
729         u8 old = inb(this->base_addr + WL3501_NIC_GCR);
730         u8 new = old & (~(WL3501_GCR_ECINT | WL3501_GCR_INT2EC |
731                         WL3501_GCR_ENECINT));
732
733         wl3501_outb(new, this->base_addr + WL3501_NIC_GCR);
734         return old & WL3501_GCR_ENECINT;
735 }
736
737 /**
738  * wl3501_unblock_interrupt - Enable interrupt from SUTRO
739  * @this - card
740  *
741  * Enable interrupt from SUTRO. (i.e. SUTRO can interrupt the HOST)
742  * Return: 1 if interrupt is originally enabled
743  */
744 static int wl3501_unblock_interrupt(struct wl3501_card *this)
745 {
746         u8 old = inb(this->base_addr + WL3501_NIC_GCR);
747         u8 new = (old & ~(WL3501_GCR_ECINT | WL3501_GCR_INT2EC)) |
748                   WL3501_GCR_ENECINT;
749
750         wl3501_outb(new, this->base_addr + WL3501_NIC_GCR);
751         return old & WL3501_GCR_ENECINT;
752 }
753
754 /**
755  * wl3501_receive - Receive data from Receive Queue.
756  *
757  * Receive data from Receive Queue.
758  *
759  * @this: card
760  * @bf: address of host
761  * @size: size of buffer.
762  */
763 static u16 wl3501_receive(struct wl3501_card *this, u8 *bf, u16 size)
764 {
765         u16 next_addr, next_addr1;
766         u8 *data = bf + 12;
767
768         size -= 12;
769         wl3501_get_from_wla(this, this->start_seg + 2,
770                             &next_addr, sizeof(next_addr));
771         if (size > WL3501_BLKSZ - sizeof(struct wl3501_rx_hdr)) {
772                 wl3501_get_from_wla(this,
773                                     this->start_seg +
774                                         sizeof(struct wl3501_rx_hdr), data,
775                                     WL3501_BLKSZ -
776                                         sizeof(struct wl3501_rx_hdr));
777                 size -= WL3501_BLKSZ - sizeof(struct wl3501_rx_hdr);
778                 data += WL3501_BLKSZ - sizeof(struct wl3501_rx_hdr);
779         } else {
780                 wl3501_get_from_wla(this,
781                                     this->start_seg +
782                                         sizeof(struct wl3501_rx_hdr),
783                                     data, size);
784                 size = 0;
785         }
786         while (size > 0) {
787                 if (size > WL3501_BLKSZ - 5) {
788                         wl3501_get_from_wla(this, next_addr + 5, data,
789                                             WL3501_BLKSZ - 5);
790                         size -= WL3501_BLKSZ - 5;
791                         data += WL3501_BLKSZ - 5;
792                         wl3501_get_from_wla(this, next_addr + 2, &next_addr1,
793                                             sizeof(next_addr1));
794                         next_addr = next_addr1;
795                 } else {
796                         wl3501_get_from_wla(this, next_addr + 5, data, size);
797                         size = 0;
798                 }
799         }
800         return 0;
801 }
802
803 static void wl3501_esbq_req_free(struct wl3501_card *this)
804 {
805         u8 tmp;
806         u16 addr;
807
808         if (this->esbq_req_head == this->esbq_req_tail)
809                 goto out;
810         wl3501_get_from_wla(this, this->esbq_req_tail + 3, &tmp, sizeof(tmp));
811         if (!(tmp & 0x80))
812                 goto out;
813         wl3501_get_from_wla(this, this->esbq_req_tail, &addr, sizeof(addr));
814         wl3501_free_tx_buffer(this, addr);
815         this->esbq_req_tail += 4;
816         if (this->esbq_req_tail >= this->esbq_req_end)
817                 this->esbq_req_tail = this->esbq_req_start;
818 out:
819         return;
820 }
821
822 static int wl3501_esbq_confirm(struct wl3501_card *this)
823 {
824         u8 tmp;
825
826         wl3501_get_from_wla(this, this->esbq_confirm + 3, &tmp, sizeof(tmp));
827         return tmp & 0x80;
828 }
829
830 static void wl3501_online(struct net_device *dev)
831 {
832         struct wl3501_card *this = netdev_priv(dev);
833
834         printk(KERN_INFO "%s: Wireless LAN online. BSSID: %pM\n",
835                dev->name, this->bssid);
836         netif_wake_queue(dev);
837 }
838
839 static void wl3501_esbq_confirm_done(struct wl3501_card *this)
840 {
841         u8 tmp = 0;
842
843         wl3501_set_to_wla(this, this->esbq_confirm + 3, &tmp, sizeof(tmp));
844         this->esbq_confirm += 4;
845         if (this->esbq_confirm >= this->esbq_confirm_end)
846                 this->esbq_confirm = this->esbq_confirm_start;
847 }
848
849 static int wl3501_mgmt_auth(struct wl3501_card *this)
850 {
851         struct wl3501_auth_req sig = {
852                 .sig_id  = WL3501_SIG_AUTH_REQ,
853                 .type    = WL3501_SYS_TYPE_OPEN,
854                 .timeout = 1000,
855         };
856
857         pr_debug("entry");
858         memcpy(sig.mac_addr, this->bssid, ETH_ALEN);
859         return wl3501_esbq_exec(this, &sig, sizeof(sig));
860 }
861
862 static int wl3501_mgmt_association(struct wl3501_card *this)
863 {
864         struct wl3501_assoc_req sig = {
865                 .sig_id          = WL3501_SIG_ASSOC_REQ,
866                 .timeout         = 1000,
867                 .listen_interval = 5,
868                 .cap_info        = this->cap_info,
869         };
870
871         pr_debug("entry");
872         memcpy(sig.mac_addr, this->bssid, ETH_ALEN);
873         return wl3501_esbq_exec(this, &sig, sizeof(sig));
874 }
875
876 static void wl3501_mgmt_join_confirm(struct net_device *dev, u16 addr)
877 {
878         struct wl3501_card *this = netdev_priv(dev);
879         struct wl3501_join_confirm sig;
880
881         pr_debug("entry");
882         wl3501_get_from_wla(this, addr, &sig, sizeof(sig));
883         if (sig.status == WL3501_STATUS_SUCCESS) {
884                 if (this->net_type == IW_MODE_INFRA) {
885                         if (this->join_sta_bss < this->bss_cnt) {
886                                 const int i = this->join_sta_bss;
887                                 memcpy(this->bssid,
888                                        this->bss_set[i].bssid, ETH_ALEN);
889                                 this->chan = this->bss_set[i].ds_pset.chan;
890                                 iw_copy_mgmt_info_element(&this->keep_essid.el,
891                                                      &this->bss_set[i].ssid.el);
892                                 wl3501_mgmt_auth(this);
893                         }
894                 } else {
895                         const int i = this->join_sta_bss;
896
897                         memcpy(&this->bssid, &this->bss_set[i].bssid, ETH_ALEN);
898                         this->chan = this->bss_set[i].ds_pset.chan;
899                         iw_copy_mgmt_info_element(&this->keep_essid.el,
900                                                   &this->bss_set[i].ssid.el);
901                         wl3501_online(dev);
902                 }
903         } else {
904                 int i;
905                 this->join_sta_bss++;
906                 for (i = this->join_sta_bss; i < this->bss_cnt; i++)
907                         if (!wl3501_mgmt_join(this, i))
908                                 break;
909                 this->join_sta_bss = i;
910                 if (this->join_sta_bss == this->bss_cnt) {
911                         if (this->net_type == IW_MODE_INFRA)
912                                 wl3501_mgmt_scan(this, 100);
913                         else {
914                                 this->adhoc_times++;
915                                 if (this->adhoc_times > WL3501_MAX_ADHOC_TRIES)
916                                         wl3501_mgmt_start(this);
917                                 else
918                                         wl3501_mgmt_scan(this, 100);
919                         }
920                 }
921         }
922 }
923
924 static inline void wl3501_alarm_interrupt(struct net_device *dev,
925                                           struct wl3501_card *this)
926 {
927         if (this->net_type == IW_MODE_INFRA) {
928                 printk(KERN_INFO "Wireless LAN offline\n");
929                 netif_stop_queue(dev);
930                 wl3501_mgmt_resync(this);
931         }
932 }
933
934 static inline void wl3501_md_confirm_interrupt(struct net_device *dev,
935                                                struct wl3501_card *this,
936                                                u16 addr)
937 {
938         struct wl3501_md_confirm sig;
939
940         pr_debug("entry");
941         wl3501_get_from_wla(this, addr, &sig, sizeof(sig));
942         wl3501_free_tx_buffer(this, sig.data);
943         if (netif_queue_stopped(dev))
944                 netif_wake_queue(dev);
945 }
946
947 static inline void wl3501_md_ind_interrupt(struct net_device *dev,
948                                            struct wl3501_card *this, u16 addr)
949 {
950         struct wl3501_md_ind sig;
951         struct sk_buff *skb;
952         u8 rssi, addr4[ETH_ALEN];
953         u16 pkt_len;
954
955         wl3501_get_from_wla(this, addr, &sig, sizeof(sig));
956         this->start_seg = sig.data;
957         wl3501_get_from_wla(this,
958                             sig.data + offsetof(struct wl3501_rx_hdr, rssi),
959                             &rssi, sizeof(rssi));
960         this->rssi = rssi <= 63 ? (rssi * 100) / 64 : 255;
961
962         wl3501_get_from_wla(this,
963                             sig.data +
964                                 offsetof(struct wl3501_rx_hdr, addr4),
965                             &addr4, sizeof(addr4));
966         if (!(addr4[0] == 0xAA && addr4[1] == 0xAA &&
967               addr4[2] == 0x03 && addr4[4] == 0x00)) {
968                 printk(KERN_INFO "Insupported packet type!\n");
969                 return;
970         }
971         pkt_len = sig.size + 12 - 24 - 4 - 6;
972
973         skb = dev_alloc_skb(pkt_len + 5);
974
975         if (!skb) {
976                 printk(KERN_WARNING "%s: Can't alloc a sk_buff of size %d.\n",
977                        dev->name, pkt_len);
978                 dev->stats.rx_dropped++;
979         } else {
980                 skb->dev = dev;
981                 skb_reserve(skb, 2); /* IP headers on 16 bytes boundaries */
982                 skb_copy_to_linear_data(skb, (unsigned char *)&sig.daddr, 12);
983                 wl3501_receive(this, skb->data, pkt_len);
984                 skb_put(skb, pkt_len);
985                 skb->protocol   = eth_type_trans(skb, dev);
986                 dev->stats.rx_packets++;
987                 dev->stats.rx_bytes += skb->len;
988                 netif_rx(skb);
989         }
990 }
991
992 static inline void wl3501_get_confirm_interrupt(struct wl3501_card *this,
993                                                 u16 addr, void *sig, int size)
994 {
995         pr_debug("entry");
996         wl3501_get_from_wla(this, addr, &this->sig_get_confirm,
997                             sizeof(this->sig_get_confirm));
998         wake_up(&this->wait);
999 }
1000
1001 static inline void wl3501_start_confirm_interrupt(struct net_device *dev,
1002                                                   struct wl3501_card *this,
1003                                                   u16 addr)
1004 {
1005         struct wl3501_start_confirm sig;
1006
1007         pr_debug("entry");
1008         wl3501_get_from_wla(this, addr, &sig, sizeof(sig));
1009         if (sig.status == WL3501_STATUS_SUCCESS)
1010                 netif_wake_queue(dev);
1011 }
1012
1013 static inline void wl3501_assoc_confirm_interrupt(struct net_device *dev,
1014                                                   u16 addr)
1015 {
1016         struct wl3501_card *this = netdev_priv(dev);
1017         struct wl3501_assoc_confirm sig;
1018
1019         pr_debug("entry");
1020         wl3501_get_from_wla(this, addr, &sig, sizeof(sig));
1021
1022         if (sig.status == WL3501_STATUS_SUCCESS)
1023                 wl3501_online(dev);
1024 }
1025
1026 static inline void wl3501_auth_confirm_interrupt(struct wl3501_card *this,
1027                                                  u16 addr)
1028 {
1029         struct wl3501_auth_confirm sig;
1030
1031         pr_debug("entry");
1032         wl3501_get_from_wla(this, addr, &sig, sizeof(sig));
1033
1034         if (sig.status == WL3501_STATUS_SUCCESS)
1035                 wl3501_mgmt_association(this);
1036         else
1037                 wl3501_mgmt_resync(this);
1038 }
1039
1040 static inline void wl3501_rx_interrupt(struct net_device *dev)
1041 {
1042         int morepkts;
1043         u16 addr;
1044         u8 sig_id;
1045         struct wl3501_card *this = netdev_priv(dev);
1046
1047         pr_debug("entry");
1048 loop:
1049         morepkts = 0;
1050         if (!wl3501_esbq_confirm(this))
1051                 goto free;
1052         wl3501_get_from_wla(this, this->esbq_confirm, &addr, sizeof(addr));
1053         wl3501_get_from_wla(this, addr + 2, &sig_id, sizeof(sig_id));
1054
1055         switch (sig_id) {
1056         case WL3501_SIG_DEAUTH_IND:
1057         case WL3501_SIG_DISASSOC_IND:
1058         case WL3501_SIG_ALARM:
1059                 wl3501_alarm_interrupt(dev, this);
1060                 break;
1061         case WL3501_SIG_MD_CONFIRM:
1062                 wl3501_md_confirm_interrupt(dev, this, addr);
1063                 break;
1064         case WL3501_SIG_MD_IND:
1065                 wl3501_md_ind_interrupt(dev, this, addr);
1066                 break;
1067         case WL3501_SIG_GET_CONFIRM:
1068                 wl3501_get_confirm_interrupt(this, addr,
1069                                              &this->sig_get_confirm,
1070                                              sizeof(this->sig_get_confirm));
1071                 break;
1072         case WL3501_SIG_PWR_MGMT_CONFIRM:
1073                 wl3501_get_confirm_interrupt(this, addr,
1074                                              &this->sig_pwr_mgmt_confirm,
1075                                             sizeof(this->sig_pwr_mgmt_confirm));
1076                 break;
1077         case WL3501_SIG_START_CONFIRM:
1078                 wl3501_start_confirm_interrupt(dev, this, addr);
1079                 break;
1080         case WL3501_SIG_SCAN_CONFIRM:
1081                 wl3501_mgmt_scan_confirm(this, addr);
1082                 break;
1083         case WL3501_SIG_JOIN_CONFIRM:
1084                 wl3501_mgmt_join_confirm(dev, addr);
1085                 break;
1086         case WL3501_SIG_ASSOC_CONFIRM:
1087                 wl3501_assoc_confirm_interrupt(dev, addr);
1088                 break;
1089         case WL3501_SIG_AUTH_CONFIRM:
1090                 wl3501_auth_confirm_interrupt(this, addr);
1091                 break;
1092         case WL3501_SIG_RESYNC_CONFIRM:
1093                 wl3501_mgmt_resync(this); /* FIXME: should be resync_confirm */
1094                 break;
1095         }
1096         wl3501_esbq_confirm_done(this);
1097         morepkts = 1;
1098         /* free request if necessary */
1099 free:
1100         wl3501_esbq_req_free(this);
1101         if (morepkts)
1102                 goto loop;
1103 }
1104
1105 static inline void wl3501_ack_interrupt(struct wl3501_card *this)
1106 {
1107         wl3501_outb(WL3501_GCR_ECINT, this->base_addr + WL3501_NIC_GCR);
1108 }
1109
1110 /**
1111  * wl3501_interrupt - Hardware interrupt from card.
1112  * @irq - Interrupt number
1113  * @dev_id - net_device
1114  *
1115  * We must acknowledge the interrupt as soon as possible, and block the
1116  * interrupt from the same card immediately to prevent re-entry.
1117  *
1118  * Before accessing the Control_Status_Block, we must lock SUTRO first.
1119  * On the other hand, to prevent SUTRO from malfunctioning, we must
1120  * unlock the SUTRO as soon as possible.
1121  */
1122 static irqreturn_t wl3501_interrupt(int irq, void *dev_id)
1123 {
1124         struct net_device *dev = dev_id;
1125         struct wl3501_card *this;
1126
1127         this = netdev_priv(dev);
1128         spin_lock(&this->lock);
1129         wl3501_ack_interrupt(this);
1130         wl3501_block_interrupt(this);
1131         wl3501_rx_interrupt(dev);
1132         wl3501_unblock_interrupt(this);
1133         spin_unlock(&this->lock);
1134
1135         return IRQ_HANDLED;
1136 }
1137
1138 static int wl3501_reset_board(struct wl3501_card *this)
1139 {
1140         u8 tmp = 0;
1141         int i, rc = 0;
1142
1143         /* Coreset */
1144         wl3501_outb_p(WL3501_GCR_CORESET, this->base_addr + WL3501_NIC_GCR);
1145         wl3501_outb_p(0, this->base_addr + WL3501_NIC_GCR);
1146         wl3501_outb_p(WL3501_GCR_CORESET, this->base_addr + WL3501_NIC_GCR);
1147
1148         /* Reset SRAM 0x480 to zero */
1149         wl3501_set_to_wla(this, 0x480, &tmp, sizeof(tmp));
1150
1151         /* Start up */
1152         wl3501_outb_p(0, this->base_addr + WL3501_NIC_GCR);
1153
1154         WL3501_NOPLOOP(1024 * 50);
1155
1156         wl3501_unblock_interrupt(this); /* acme: was commented */
1157
1158         /* Polling Self_Test_Status */
1159         for (i = 0; i < 10000; i++) {
1160                 wl3501_get_from_wla(this, 0x480, &tmp, sizeof(tmp));
1161
1162                 if (tmp == 'W') {
1163                         /* firmware complete all test successfully */
1164                         tmp = 'A';
1165                         wl3501_set_to_wla(this, 0x480, &tmp, sizeof(tmp));
1166                         goto out;
1167                 }
1168                 WL3501_NOPLOOP(10);
1169         }
1170         printk(KERN_WARNING "%s: failed to reset the board!\n", __func__);
1171         rc = -ENODEV;
1172 out:
1173         return rc;
1174 }
1175
1176 static int wl3501_init_firmware(struct wl3501_card *this)
1177 {
1178         u16 ptr, next;
1179         int rc = wl3501_reset_board(this);
1180
1181         if (rc)
1182                 goto fail;
1183         this->card_name[0] = '\0';
1184         wl3501_get_from_wla(this, 0x1a00,
1185                             this->card_name, sizeof(this->card_name));
1186         this->card_name[sizeof(this->card_name) - 1] = '\0';
1187         this->firmware_date[0] = '\0';
1188         wl3501_get_from_wla(this, 0x1a40,
1189                             this->firmware_date, sizeof(this->firmware_date));
1190         this->firmware_date[sizeof(this->firmware_date) - 1] = '\0';
1191         /* Switch to SRAM Page 0 */
1192         wl3501_switch_page(this, WL3501_BSS_SPAGE0);
1193         /* Read parameter from card */
1194         wl3501_get_from_wla(this, 0x482, &this->esbq_req_start, 2);
1195         wl3501_get_from_wla(this, 0x486, &this->esbq_req_end, 2);
1196         wl3501_get_from_wla(this, 0x488, &this->esbq_confirm_start, 2);
1197         wl3501_get_from_wla(this, 0x48c, &this->esbq_confirm_end, 2);
1198         wl3501_get_from_wla(this, 0x48e, &this->tx_buffer_head, 2);
1199         wl3501_get_from_wla(this, 0x492, &this->tx_buffer_size, 2);
1200         this->esbq_req_tail     = this->esbq_req_head = this->esbq_req_start;
1201         this->esbq_req_end     += this->esbq_req_start;
1202         this->esbq_confirm      = this->esbq_confirm_start;
1203         this->esbq_confirm_end += this->esbq_confirm_start;
1204         /* Initial Tx Buffer */
1205         this->tx_buffer_cnt = 1;
1206         ptr = this->tx_buffer_head;
1207         next = ptr + WL3501_BLKSZ;
1208         while ((next - this->tx_buffer_head) < this->tx_buffer_size) {
1209                 this->tx_buffer_cnt++;
1210                 wl3501_set_to_wla(this, ptr, &next, sizeof(next));
1211                 ptr = next;
1212                 next = ptr + WL3501_BLKSZ;
1213         }
1214         rc = 0;
1215         next = 0;
1216         wl3501_set_to_wla(this, ptr, &next, sizeof(next));
1217         this->tx_buffer_tail = ptr;
1218 out:
1219         return rc;
1220 fail:
1221         printk(KERN_WARNING "%s: failed!\n", __func__);
1222         goto out;
1223 }
1224
1225 static int wl3501_close(struct net_device *dev)
1226 {
1227         struct wl3501_card *this = netdev_priv(dev);
1228         int rc = -ENODEV;
1229         unsigned long flags;
1230         struct pcmcia_device *link;
1231         link = this->p_dev;
1232
1233         spin_lock_irqsave(&this->lock, flags);
1234         link->open--;
1235
1236         /* Stop wl3501_hard_start_xmit() from now on */
1237         netif_stop_queue(dev);
1238         wl3501_ack_interrupt(this);
1239
1240         /* Mask interrupts from the SUTRO */
1241         wl3501_block_interrupt(this);
1242
1243         rc = 0;
1244         printk(KERN_INFO "%s: WL3501 closed\n", dev->name);
1245         spin_unlock_irqrestore(&this->lock, flags);
1246         return rc;
1247 }
1248
1249 /**
1250  * wl3501_reset - Reset the SUTRO.
1251  * @dev - network device
1252  *
1253  * It is almost the same as wl3501_open(). In fact, we may just wl3501_close()
1254  * and wl3501_open() again, but I wouldn't like to free_irq() when the driver
1255  * is running. It seems to be dangerous.
1256  */
1257 static int wl3501_reset(struct net_device *dev)
1258 {
1259         struct wl3501_card *this = netdev_priv(dev);
1260         int rc = -ENODEV;
1261
1262         wl3501_block_interrupt(this);
1263
1264         if (wl3501_init_firmware(this)) {
1265                 printk(KERN_WARNING "%s: Can't initialize Firmware!\n",
1266                        dev->name);
1267                 /* Free IRQ, and mark IRQ as unused */
1268                 free_irq(dev->irq, dev);
1269                 goto out;
1270         }
1271
1272         /*
1273          * Queue has to be started only when the Card is Started
1274          */
1275         netif_stop_queue(dev);
1276         this->adhoc_times = 0;
1277         wl3501_ack_interrupt(this);
1278         wl3501_unblock_interrupt(this);
1279         wl3501_mgmt_scan(this, 100);
1280         pr_debug("%s: device reset", dev->name);
1281         rc = 0;
1282 out:
1283         return rc;
1284 }
1285
1286 static void wl3501_tx_timeout(struct net_device *dev)
1287 {
1288         struct wl3501_card *this = netdev_priv(dev);
1289         struct net_device_stats *stats = &dev->stats;
1290         unsigned long flags;
1291         int rc;
1292
1293         stats->tx_errors++;
1294         spin_lock_irqsave(&this->lock, flags);
1295         rc = wl3501_reset(dev);
1296         spin_unlock_irqrestore(&this->lock, flags);
1297         if (rc)
1298                 printk(KERN_ERR "%s: Error %d resetting card on Tx timeout!\n",
1299                        dev->name, rc);
1300         else {
1301                 dev->trans_start = jiffies; /* prevent tx timeout */
1302                 netif_wake_queue(dev);
1303         }
1304 }
1305
1306 /*
1307  * Return : 0 - OK
1308  *          1 - Could not transmit (dev_queue_xmit will queue it)
1309  *              and try to sent it later
1310  */
1311 static netdev_tx_t wl3501_hard_start_xmit(struct sk_buff *skb,
1312                                                 struct net_device *dev)
1313 {
1314         int enabled, rc;
1315         struct wl3501_card *this = netdev_priv(dev);
1316         unsigned long flags;
1317
1318         spin_lock_irqsave(&this->lock, flags);
1319         enabled = wl3501_block_interrupt(this);
1320         rc = wl3501_send_pkt(this, skb->data, skb->len);
1321         if (enabled)
1322                 wl3501_unblock_interrupt(this);
1323         if (rc) {
1324                 ++dev->stats.tx_dropped;
1325                 netif_stop_queue(dev);
1326         } else {
1327                 ++dev->stats.tx_packets;
1328                 dev->stats.tx_bytes += skb->len;
1329                 kfree_skb(skb);
1330
1331                 if (this->tx_buffer_cnt < 2)
1332                         netif_stop_queue(dev);
1333         }
1334         spin_unlock_irqrestore(&this->lock, flags);
1335         return NETDEV_TX_OK;
1336 }
1337
1338 static int wl3501_open(struct net_device *dev)
1339 {
1340         int rc = -ENODEV;
1341         struct wl3501_card *this = netdev_priv(dev);
1342         unsigned long flags;
1343         struct pcmcia_device *link;
1344         link = this->p_dev;
1345
1346         spin_lock_irqsave(&this->lock, flags);
1347         if (!pcmcia_dev_present(link))
1348                 goto out;
1349         netif_device_attach(dev);
1350         link->open++;
1351
1352         /* Initial WL3501 firmware */
1353         pr_debug("%s: Initialize WL3501 firmware...", dev->name);
1354         if (wl3501_init_firmware(this))
1355                 goto fail;
1356         /* Initial device variables */
1357         this->adhoc_times = 0;
1358         /* Acknowledge Interrupt, for cleaning last state */
1359         wl3501_ack_interrupt(this);
1360
1361         /* Enable interrupt from card after all */
1362         wl3501_unblock_interrupt(this);
1363         wl3501_mgmt_scan(this, 100);
1364         rc = 0;
1365         pr_debug("%s: WL3501 opened", dev->name);
1366         printk(KERN_INFO "%s: Card Name: %s\n"
1367                          "%s: Firmware Date: %s\n",
1368                          dev->name, this->card_name,
1369                          dev->name, this->firmware_date);
1370 out:
1371         spin_unlock_irqrestore(&this->lock, flags);
1372         return rc;
1373 fail:
1374         printk(KERN_WARNING "%s: Can't initialize firmware!\n", dev->name);
1375         goto out;
1376 }
1377
1378 static struct iw_statistics *wl3501_get_wireless_stats(struct net_device *dev)
1379 {
1380         struct wl3501_card *this = netdev_priv(dev);
1381         struct iw_statistics *wstats = &this->wstats;
1382         u32 value; /* size checked: it is u32 */
1383
1384         memset(wstats, 0, sizeof(*wstats));
1385         wstats->status = netif_running(dev);
1386         if (!wl3501_get_mib_value(this, WL3501_MIB_ATTR_WEP_ICV_ERROR_COUNT,
1387                                   &value, sizeof(value)))
1388                 wstats->discard.code += value;
1389         if (!wl3501_get_mib_value(this, WL3501_MIB_ATTR_WEP_UNDECRYPTABLE_COUNT,
1390                                   &value, sizeof(value)))
1391                 wstats->discard.code += value;
1392         if (!wl3501_get_mib_value(this, WL3501_MIB_ATTR_WEP_EXCLUDED_COUNT,
1393                                   &value, sizeof(value)))
1394                 wstats->discard.code += value;
1395         if (!wl3501_get_mib_value(this, WL3501_MIB_ATTR_RETRY_COUNT,
1396                                   &value, sizeof(value)))
1397                 wstats->discard.retries = value;
1398         if (!wl3501_get_mib_value(this, WL3501_MIB_ATTR_FAILED_COUNT,
1399                                   &value, sizeof(value)))
1400                 wstats->discard.misc += value;
1401         if (!wl3501_get_mib_value(this, WL3501_MIB_ATTR_RTS_FAILURE_COUNT,
1402                                   &value, sizeof(value)))
1403                 wstats->discard.misc += value;
1404         if (!wl3501_get_mib_value(this, WL3501_MIB_ATTR_ACK_FAILURE_COUNT,
1405                                   &value, sizeof(value)))
1406                 wstats->discard.misc += value;
1407         if (!wl3501_get_mib_value(this, WL3501_MIB_ATTR_FRAME_DUPLICATE_COUNT,
1408                                   &value, sizeof(value)))
1409                 wstats->discard.misc += value;
1410         return wstats;
1411 }
1412
1413 static void wl3501_get_drvinfo(struct net_device *dev, struct ethtool_drvinfo *info)
1414 {
1415         strlcpy(info->driver, "wl3501_cs", sizeof(info->driver));
1416 }
1417
1418 static const struct ethtool_ops ops = {
1419         .get_drvinfo = wl3501_get_drvinfo
1420 };
1421
1422 /**
1423  * wl3501_detach - deletes a driver "instance"
1424  * @link - FILL_IN
1425  *
1426  * This deletes a driver "instance". The device is de-registered with Card
1427  * Services. If it has been released, all local data structures are freed.
1428  * Otherwise, the structures will be freed when the device is released.
1429  */
1430 static void wl3501_detach(struct pcmcia_device *link)
1431 {
1432         struct net_device *dev = link->priv;
1433
1434         /* If the device is currently configured and active, we won't actually
1435          * delete it yet.  Instead, it is marked so that when the release()
1436          * function is called, that will trigger a proper detach(). */
1437
1438         while (link->open > 0)
1439                 wl3501_close(dev);
1440
1441         netif_device_detach(dev);
1442         wl3501_release(link);
1443
1444         unregister_netdev(dev);
1445
1446         if (link->priv)
1447                 free_netdev(link->priv);
1448 }
1449
1450 static int wl3501_get_name(struct net_device *dev, struct iw_request_info *info,
1451                            union iwreq_data *wrqu, char *extra)
1452 {
1453         strlcpy(wrqu->name, "IEEE 802.11-DS", sizeof(wrqu->name));
1454         return 0;
1455 }
1456
1457 static int wl3501_set_freq(struct net_device *dev, struct iw_request_info *info,
1458                            union iwreq_data *wrqu, char *extra)
1459 {
1460         struct wl3501_card *this = netdev_priv(dev);
1461         int channel = wrqu->freq.m;
1462         int rc = -EINVAL;
1463
1464         if (iw_valid_channel(this->reg_domain, channel)) {
1465                 this->chan = channel;
1466                 rc = wl3501_reset(dev);
1467         }
1468         return rc;
1469 }
1470
1471 static int wl3501_get_freq(struct net_device *dev, struct iw_request_info *info,
1472                            union iwreq_data *wrqu, char *extra)
1473 {
1474         struct wl3501_card *this = netdev_priv(dev);
1475
1476         wrqu->freq.m = ieee80211_dsss_chan_to_freq(this->chan) * 100000;
1477         wrqu->freq.e = 1;
1478         return 0;
1479 }
1480
1481 static int wl3501_set_mode(struct net_device *dev, struct iw_request_info *info,
1482                            union iwreq_data *wrqu, char *extra)
1483 {
1484         int rc = -EINVAL;
1485
1486         if (wrqu->mode == IW_MODE_INFRA ||
1487             wrqu->mode == IW_MODE_ADHOC ||
1488             wrqu->mode == IW_MODE_AUTO) {
1489                 struct wl3501_card *this = netdev_priv(dev);
1490
1491                 this->net_type = wrqu->mode;
1492                 rc = wl3501_reset(dev);
1493         }
1494         return rc;
1495 }
1496
1497 static int wl3501_get_mode(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->mode = this->net_type;
1503         return 0;
1504 }
1505
1506 static int wl3501_get_sens(struct net_device *dev, struct iw_request_info *info,
1507                            union iwreq_data *wrqu, char *extra)
1508 {
1509         struct wl3501_card *this = netdev_priv(dev);
1510
1511         wrqu->sens.value = this->rssi;
1512         wrqu->sens.disabled = !wrqu->sens.value;
1513         wrqu->sens.fixed = 1;
1514         return 0;
1515 }
1516
1517 static int wl3501_get_range(struct net_device *dev,
1518                             struct iw_request_info *info,
1519                             union iwreq_data *wrqu, char *extra)
1520 {
1521         struct iw_range *range = (struct iw_range *)extra;
1522
1523         /* Set the length (very important for backward compatibility) */
1524         wrqu->data.length = sizeof(*range);
1525
1526         /* Set all the info we don't care or don't know about to zero */
1527         memset(range, 0, sizeof(*range));
1528
1529         /* Set the Wireless Extension versions */
1530         range->we_version_compiled      = WIRELESS_EXT;
1531         range->we_version_source        = 1;
1532         range->throughput               = 2 * 1000 * 1000;     /* ~2 Mb/s */
1533         /* FIXME: study the code to fill in more fields... */
1534         return 0;
1535 }
1536
1537 static int wl3501_set_wap(struct net_device *dev, struct iw_request_info *info,
1538                           union iwreq_data *wrqu, char *extra)
1539 {
1540         struct wl3501_card *this = netdev_priv(dev);
1541         static const u8 bcast[ETH_ALEN] = { 255, 255, 255, 255, 255, 255 };
1542         int rc = -EINVAL;
1543
1544         /* FIXME: we support other ARPHRDs...*/
1545         if (wrqu->ap_addr.sa_family != ARPHRD_ETHER)
1546                 goto out;
1547         if (!memcmp(bcast, wrqu->ap_addr.sa_data, ETH_ALEN)) {
1548                 /* FIXME: rescan? */
1549         } else
1550                 memcpy(this->bssid, wrqu->ap_addr.sa_data, ETH_ALEN);
1551                 /* FIXME: rescan? deassoc & scan? */
1552         rc = 0;
1553 out:
1554         return rc;
1555 }
1556
1557 static int wl3501_get_wap(struct net_device *dev, struct iw_request_info *info,
1558                           union iwreq_data *wrqu, char *extra)
1559 {
1560         struct wl3501_card *this = netdev_priv(dev);
1561
1562         wrqu->ap_addr.sa_family = ARPHRD_ETHER;
1563         memcpy(wrqu->ap_addr.sa_data, this->bssid, ETH_ALEN);
1564         return 0;
1565 }
1566
1567 static int wl3501_set_scan(struct net_device *dev, struct iw_request_info *info,
1568                            union iwreq_data *wrqu, char *extra)
1569 {
1570         /*
1571          * FIXME: trigger scanning with a reset, yes, I'm lazy
1572          */
1573         return wl3501_reset(dev);
1574 }
1575
1576 static int wl3501_get_scan(struct net_device *dev, struct iw_request_info *info,
1577                            union iwreq_data *wrqu, char *extra)
1578 {
1579         struct wl3501_card *this = netdev_priv(dev);
1580         int i;
1581         char *current_ev = extra;
1582         struct iw_event iwe;
1583
1584         for (i = 0; i < this->bss_cnt; ++i) {
1585                 iwe.cmd                 = SIOCGIWAP;
1586                 iwe.u.ap_addr.sa_family = ARPHRD_ETHER;
1587                 memcpy(iwe.u.ap_addr.sa_data, this->bss_set[i].bssid, ETH_ALEN);
1588                 current_ev = iwe_stream_add_event(info, current_ev,
1589                                                   extra + IW_SCAN_MAX_DATA,
1590                                                   &iwe, IW_EV_ADDR_LEN);
1591                 iwe.cmd           = SIOCGIWESSID;
1592                 iwe.u.data.flags  = 1;
1593                 iwe.u.data.length = this->bss_set[i].ssid.el.len;
1594                 current_ev = iwe_stream_add_point(info, current_ev,
1595                                                   extra + IW_SCAN_MAX_DATA,
1596                                                   &iwe,
1597                                                   this->bss_set[i].ssid.essid);
1598                 iwe.cmd    = SIOCGIWMODE;
1599                 iwe.u.mode = this->bss_set[i].bss_type;
1600                 current_ev = iwe_stream_add_event(info, current_ev,
1601                                                   extra + IW_SCAN_MAX_DATA,
1602                                                   &iwe, IW_EV_UINT_LEN);
1603                 iwe.cmd = SIOCGIWFREQ;
1604                 iwe.u.freq.m = this->bss_set[i].ds_pset.chan;
1605                 iwe.u.freq.e = 0;
1606                 current_ev = iwe_stream_add_event(info, current_ev,
1607                                                   extra + IW_SCAN_MAX_DATA,
1608                                                   &iwe, IW_EV_FREQ_LEN);
1609                 iwe.cmd = SIOCGIWENCODE;
1610                 if (this->bss_set[i].cap_info & WL3501_MGMT_CAPABILITY_PRIVACY)
1611                         iwe.u.data.flags = IW_ENCODE_ENABLED | IW_ENCODE_NOKEY;
1612                 else
1613                         iwe.u.data.flags = IW_ENCODE_DISABLED;
1614                 iwe.u.data.length = 0;
1615                 current_ev = iwe_stream_add_point(info, current_ev,
1616                                                   extra + IW_SCAN_MAX_DATA,
1617                                                   &iwe, NULL);
1618         }
1619         /* Length of data */
1620         wrqu->data.length = (current_ev - extra);
1621         wrqu->data.flags = 0; /* FIXME: set properly these flags */
1622         return 0;
1623 }
1624
1625 static int wl3501_set_essid(struct net_device *dev,
1626                             struct iw_request_info *info,
1627                             union iwreq_data *wrqu, char *extra)
1628 {
1629         struct wl3501_card *this = netdev_priv(dev);
1630
1631         if (wrqu->data.flags) {
1632                 iw_set_mgmt_info_element(IW_MGMT_INFO_ELEMENT_SSID,
1633                                          &this->essid.el,
1634                                          extra, wrqu->data.length);
1635         } else { /* We accept any ESSID */
1636                 iw_set_mgmt_info_element(IW_MGMT_INFO_ELEMENT_SSID,
1637                                          &this->essid.el, "ANY", 3);
1638         }
1639         return wl3501_reset(dev);
1640 }
1641
1642 static int wl3501_get_essid(struct net_device *dev,
1643                             struct iw_request_info *info,
1644                             union iwreq_data *wrqu, char *extra)
1645 {
1646         struct wl3501_card *this = netdev_priv(dev);
1647         unsigned long flags;
1648
1649         spin_lock_irqsave(&this->lock, flags);
1650         wrqu->essid.flags  = 1;
1651         wrqu->essid.length = this->essid.el.len;
1652         memcpy(extra, this->essid.essid, this->essid.el.len);
1653         spin_unlock_irqrestore(&this->lock, flags);
1654         return 0;
1655 }
1656
1657 static int wl3501_set_nick(struct net_device *dev, struct iw_request_info *info,
1658                            union iwreq_data *wrqu, char *extra)
1659 {
1660         struct wl3501_card *this = netdev_priv(dev);
1661
1662         if (wrqu->data.length > sizeof(this->nick))
1663                 return -E2BIG;
1664         strlcpy(this->nick, extra, wrqu->data.length);
1665         return 0;
1666 }
1667
1668 static int wl3501_get_nick(struct net_device *dev, struct iw_request_info *info,
1669                            union iwreq_data *wrqu, char *extra)
1670 {
1671         struct wl3501_card *this = netdev_priv(dev);
1672
1673         strlcpy(extra, this->nick, 32);
1674         wrqu->data.length = strlen(extra);
1675         return 0;
1676 }
1677
1678 static int wl3501_get_rate(struct net_device *dev, struct iw_request_info *info,
1679                            union iwreq_data *wrqu, char *extra)
1680 {
1681         /*
1682          * FIXME: have to see from where to get this info, perhaps this card
1683          * works at 1 Mbit/s too... for now leave at 2 Mbit/s that is the most
1684          * common with the Planet Access Points. -acme
1685          */
1686         wrqu->bitrate.value = 2000000;
1687         wrqu->bitrate.fixed = 1;
1688         return 0;
1689 }
1690
1691 static int wl3501_get_rts_threshold(struct net_device *dev,
1692                                     struct iw_request_info *info,
1693                                     union iwreq_data *wrqu, char *extra)
1694 {
1695         u16 threshold; /* size checked: it is u16 */
1696         struct wl3501_card *this = netdev_priv(dev);
1697         int rc = wl3501_get_mib_value(this, WL3501_MIB_ATTR_RTS_THRESHOLD,
1698                                       &threshold, sizeof(threshold));
1699         if (!rc) {
1700                 wrqu->rts.value = threshold;
1701                 wrqu->rts.disabled = threshold >= 2347;
1702                 wrqu->rts.fixed = 1;
1703         }
1704         return rc;
1705 }
1706
1707 static int wl3501_get_frag_threshold(struct net_device *dev,
1708                                      struct iw_request_info *info,
1709                                      union iwreq_data *wrqu, char *extra)
1710 {
1711         u16 threshold; /* size checked: it is u16 */
1712         struct wl3501_card *this = netdev_priv(dev);
1713         int rc = wl3501_get_mib_value(this, WL3501_MIB_ATTR_FRAG_THRESHOLD,
1714                                       &threshold, sizeof(threshold));
1715         if (!rc) {
1716                 wrqu->frag.value = threshold;
1717                 wrqu->frag.disabled = threshold >= 2346;
1718                 wrqu->frag.fixed = 1;
1719         }
1720         return rc;
1721 }
1722
1723 static int wl3501_get_txpow(struct net_device *dev,
1724                             struct iw_request_info *info,
1725                             union iwreq_data *wrqu, char *extra)
1726 {
1727         u16 txpow;
1728         struct wl3501_card *this = netdev_priv(dev);
1729         int rc = wl3501_get_mib_value(this,
1730                                       WL3501_MIB_ATTR_CURRENT_TX_PWR_LEVEL,
1731                                       &txpow, sizeof(txpow));
1732         if (!rc) {
1733                 wrqu->txpower.value = txpow;
1734                 wrqu->txpower.disabled = 0;
1735                 /*
1736                  * From the MIB values I think this can be configurable,
1737                  * as it lists several tx power levels -acme
1738                  */
1739                 wrqu->txpower.fixed = 0;
1740                 wrqu->txpower.flags = IW_TXPOW_MWATT;
1741         }
1742         return rc;
1743 }
1744
1745 static int wl3501_get_retry(struct net_device *dev,
1746                             struct iw_request_info *info,
1747                             union iwreq_data *wrqu, char *extra)
1748 {
1749         u8 retry; /* size checked: it is u8 */
1750         struct wl3501_card *this = netdev_priv(dev);
1751         int rc = wl3501_get_mib_value(this,
1752                                       WL3501_MIB_ATTR_LONG_RETRY_LIMIT,
1753                                       &retry, sizeof(retry));
1754         if (rc)
1755                 goto out;
1756         if (wrqu->retry.flags & IW_RETRY_LONG) {
1757                 wrqu->retry.flags = IW_RETRY_LIMIT | IW_RETRY_LONG;
1758                 goto set_value;
1759         }
1760         rc = wl3501_get_mib_value(this, WL3501_MIB_ATTR_SHORT_RETRY_LIMIT,
1761                                   &retry, sizeof(retry));
1762         if (rc)
1763                 goto out;
1764         wrqu->retry.flags = IW_RETRY_LIMIT | IW_RETRY_SHORT;
1765 set_value:
1766         wrqu->retry.value = retry;
1767         wrqu->retry.disabled = 0;
1768 out:
1769         return rc;
1770 }
1771
1772 static int wl3501_get_encode(struct net_device *dev,
1773                              struct iw_request_info *info,
1774                              union iwreq_data *wrqu, char *extra)
1775 {
1776         u8 implemented, restricted, keys[100], len_keys, tocopy;
1777         struct wl3501_card *this = netdev_priv(dev);
1778         int rc = wl3501_get_mib_value(this,
1779                                       WL3501_MIB_ATTR_PRIV_OPT_IMPLEMENTED,
1780                                       &implemented, sizeof(implemented));
1781         if (rc)
1782                 goto out;
1783         if (!implemented) {
1784                 wrqu->encoding.flags = IW_ENCODE_DISABLED;
1785                 goto out;
1786         }
1787         rc = wl3501_get_mib_value(this, WL3501_MIB_ATTR_EXCLUDE_UNENCRYPTED,
1788                                   &restricted, sizeof(restricted));
1789         if (rc)
1790                 goto out;
1791         wrqu->encoding.flags = restricted ? IW_ENCODE_RESTRICTED :
1792                                             IW_ENCODE_OPEN;
1793         rc = wl3501_get_mib_value(this, WL3501_MIB_ATTR_WEP_KEY_MAPPINGS_LEN,
1794                                   &len_keys, sizeof(len_keys));
1795         if (rc)
1796                 goto out;
1797         rc = wl3501_get_mib_value(this, WL3501_MIB_ATTR_WEP_KEY_MAPPINGS,
1798                                   keys, len_keys);
1799         if (rc)
1800                 goto out;
1801         tocopy = min_t(u8, len_keys, wrqu->encoding.length);
1802         tocopy = min_t(u8, tocopy, 100);
1803         wrqu->encoding.length = tocopy;
1804         memcpy(extra, keys, tocopy);
1805 out:
1806         return rc;
1807 }
1808
1809 static int wl3501_get_power(struct net_device *dev,
1810                             struct iw_request_info *info,
1811                             union iwreq_data *wrqu, char *extra)
1812 {
1813         u8 pwr_state;
1814         struct wl3501_card *this = netdev_priv(dev);
1815         int rc = wl3501_get_mib_value(this,
1816                                       WL3501_MIB_ATTR_CURRENT_PWR_STATE,
1817                                       &pwr_state, sizeof(pwr_state));
1818         if (rc)
1819                 goto out;
1820         wrqu->power.disabled = !pwr_state;
1821         wrqu->power.flags = IW_POWER_ON;
1822 out:
1823         return rc;
1824 }
1825
1826 static const iw_handler wl3501_handler[] = {
1827         IW_HANDLER(SIOCGIWNAME, wl3501_get_name),
1828         IW_HANDLER(SIOCSIWFREQ, wl3501_set_freq),
1829         IW_HANDLER(SIOCGIWFREQ, wl3501_get_freq),
1830         IW_HANDLER(SIOCSIWMODE, wl3501_set_mode),
1831         IW_HANDLER(SIOCGIWMODE, wl3501_get_mode),
1832         IW_HANDLER(SIOCGIWSENS, wl3501_get_sens),
1833         IW_HANDLER(SIOCGIWRANGE, wl3501_get_range),
1834         IW_HANDLER(SIOCSIWSPY, iw_handler_set_spy),
1835         IW_HANDLER(SIOCGIWSPY, iw_handler_get_spy),
1836         IW_HANDLER(SIOCSIWTHRSPY, iw_handler_set_thrspy),
1837         IW_HANDLER(SIOCGIWTHRSPY, iw_handler_get_thrspy),
1838         IW_HANDLER(SIOCSIWAP, wl3501_set_wap),
1839         IW_HANDLER(SIOCGIWAP, wl3501_get_wap),
1840         IW_HANDLER(SIOCSIWSCAN, wl3501_set_scan),
1841         IW_HANDLER(SIOCGIWSCAN, wl3501_get_scan),
1842         IW_HANDLER(SIOCSIWESSID, wl3501_set_essid),
1843         IW_HANDLER(SIOCGIWESSID, wl3501_get_essid),
1844         IW_HANDLER(SIOCSIWNICKN, wl3501_set_nick),
1845         IW_HANDLER(SIOCGIWNICKN, wl3501_get_nick),
1846         IW_HANDLER(SIOCGIWRATE, wl3501_get_rate),
1847         IW_HANDLER(SIOCGIWRTS, wl3501_get_rts_threshold),
1848         IW_HANDLER(SIOCGIWFRAG, wl3501_get_frag_threshold),
1849         IW_HANDLER(SIOCGIWTXPOW, wl3501_get_txpow),
1850         IW_HANDLER(SIOCGIWRETRY, wl3501_get_retry),
1851         IW_HANDLER(SIOCGIWENCODE, wl3501_get_encode),
1852         IW_HANDLER(SIOCGIWPOWER, wl3501_get_power),
1853 };
1854
1855 static const struct iw_handler_def wl3501_handler_def = {
1856         .num_standard   = ARRAY_SIZE(wl3501_handler),
1857         .standard       = (iw_handler *)wl3501_handler,
1858         .get_wireless_stats = wl3501_get_wireless_stats,
1859 };
1860
1861 static const struct net_device_ops wl3501_netdev_ops = {
1862         .ndo_open               = wl3501_open,
1863         .ndo_stop               = wl3501_close,
1864         .ndo_start_xmit         = wl3501_hard_start_xmit,
1865         .ndo_tx_timeout         = wl3501_tx_timeout,
1866         .ndo_change_mtu         = eth_change_mtu,
1867         .ndo_set_mac_address    = eth_mac_addr,
1868         .ndo_validate_addr      = eth_validate_addr,
1869 };
1870
1871 /**
1872  * wl3501_attach - creates an "instance" of the driver
1873  *
1874  * Creates an "instance" of the driver, allocating local data structures for
1875  * one device.  The device is registered with Card Services.
1876  *
1877  * The dev_link structure is initialized, but we don't actually configure the
1878  * card at this point -- we wait until we receive a card insertion event.
1879  */
1880 static int wl3501_probe(struct pcmcia_device *p_dev)
1881 {
1882         struct net_device *dev;
1883         struct wl3501_card *this;
1884
1885         /* The io structure describes IO port mapping */
1886         p_dev->resource[0]->end = 16;
1887         p_dev->resource[0]->flags       = IO_DATA_PATH_WIDTH_8;
1888
1889         /* General socket configuration */
1890         p_dev->config_flags     = CONF_ENABLE_IRQ;
1891         p_dev->config_index     = 1;
1892
1893         dev = alloc_etherdev(sizeof(struct wl3501_card));
1894         if (!dev)
1895                 goto out_link;
1896
1897
1898         dev->netdev_ops         = &wl3501_netdev_ops;
1899         dev->watchdog_timeo     = 5 * HZ;
1900
1901         this = netdev_priv(dev);
1902         this->wireless_data.spy_data = &this->spy_data;
1903         this->p_dev = p_dev;
1904         dev->wireless_data      = &this->wireless_data;
1905         dev->wireless_handlers  = &wl3501_handler_def;
1906         SET_ETHTOOL_OPS(dev, &ops);
1907         netif_stop_queue(dev);
1908         p_dev->priv = dev;
1909
1910         return wl3501_config(p_dev);
1911 out_link:
1912         return -ENOMEM;
1913 }
1914
1915 /**
1916  * wl3501_config - configure the PCMCIA socket and make eth device available
1917  * @link - FILL_IN
1918  *
1919  * wl3501_config() is scheduled to run after a CARD_INSERTION event is
1920  * received, to configure the PCMCIA socket, and to make the ethernet device
1921  * available to the system.
1922  */
1923 static int wl3501_config(struct pcmcia_device *link)
1924 {
1925         struct net_device *dev = link->priv;
1926         int i = 0, j, ret;
1927         struct wl3501_card *this;
1928
1929         /* Try allocating IO ports.  This tries a few fixed addresses.  If you
1930          * want, you can also read the card's config table to pick addresses --
1931          * see the serial driver for an example. */
1932         link->io_lines = 5;
1933
1934         for (j = 0x280; j < 0x400; j += 0x20) {
1935                 /* The '^0x300' is so that we probe 0x300-0x3ff first, then
1936                  * 0x200-0x2ff, and so on, because this seems safer */
1937                 link->resource[0]->start = j;
1938                 link->resource[1]->start = link->resource[0]->start + 0x10;
1939                 i = pcmcia_request_io(link);
1940                 if (i == 0)
1941                         break;
1942         }
1943         if (i != 0)
1944                 goto failed;
1945
1946         /* Now allocate an interrupt line. Note that this does not actually
1947          * assign a handler to the interrupt. */
1948
1949         ret = pcmcia_request_irq(link, wl3501_interrupt);
1950         if (ret)
1951                 goto failed;
1952
1953         /* This actually configures the PCMCIA socket -- setting up the I/O
1954          * windows and the interrupt mapping.  */
1955
1956         ret = pcmcia_enable_device(link);
1957         if (ret)
1958                 goto failed;
1959
1960         dev->irq = link->irq;
1961         dev->base_addr = link->resource[0]->start;
1962         SET_NETDEV_DEV(dev, &link->dev);
1963         if (register_netdev(dev)) {
1964                 printk(KERN_NOTICE "wl3501_cs: register_netdev() failed\n");
1965                 goto failed;
1966         }
1967
1968         this = netdev_priv(dev);
1969
1970         this->base_addr = dev->base_addr;
1971
1972         if (!wl3501_get_flash_mac_addr(this)) {
1973                 printk(KERN_WARNING "%s: Cant read MAC addr in flash ROM?\n",
1974                        dev->name);
1975                 unregister_netdev(dev);
1976                 goto failed;
1977         }
1978
1979         for (i = 0; i < 6; i++)
1980                 dev->dev_addr[i] = ((char *)&this->mac_addr)[i];
1981
1982         /* print probe information */
1983         printk(KERN_INFO "%s: wl3501 @ 0x%3.3x, IRQ %d, "
1984                "MAC addr in flash ROM:%pM\n",
1985                dev->name, this->base_addr, (int)dev->irq,
1986                dev->dev_addr);
1987         /*
1988          * Initialize card parameters - added by jss
1989          */
1990         this->net_type          = IW_MODE_INFRA;
1991         this->bss_cnt           = 0;
1992         this->join_sta_bss      = 0;
1993         this->adhoc_times       = 0;
1994         iw_set_mgmt_info_element(IW_MGMT_INFO_ELEMENT_SSID, &this->essid.el,
1995                                  "ANY", 3);
1996         this->card_name[0]      = '\0';
1997         this->firmware_date[0]  = '\0';
1998         this->rssi              = 255;
1999         this->chan              = iw_default_channel(this->reg_domain);
2000         strlcpy(this->nick, "Planet WL3501", sizeof(this->nick));
2001         spin_lock_init(&this->lock);
2002         init_waitqueue_head(&this->wait);
2003         netif_start_queue(dev);
2004         return 0;
2005
2006 failed:
2007         wl3501_release(link);
2008         return -ENODEV;
2009 }
2010
2011 /**
2012  * wl3501_release - unregister the net, release PCMCIA configuration
2013  * @arg - link
2014  *
2015  * After a card is removed, wl3501_release() will unregister the net device,
2016  * and release the PCMCIA configuration.  If the device is still open, this
2017  * will be postponed until it is closed.
2018  */
2019 static void wl3501_release(struct pcmcia_device *link)
2020 {
2021         pcmcia_disable_device(link);
2022 }
2023
2024 static int wl3501_suspend(struct pcmcia_device *link)
2025 {
2026         struct net_device *dev = link->priv;
2027
2028         wl3501_pwr_mgmt(netdev_priv(dev), WL3501_SUSPEND);
2029         if (link->open)
2030                 netif_device_detach(dev);
2031
2032         return 0;
2033 }
2034
2035 static int wl3501_resume(struct pcmcia_device *link)
2036 {
2037         struct net_device *dev = link->priv;
2038
2039         wl3501_pwr_mgmt(netdev_priv(dev), WL3501_RESUME);
2040         if (link->open) {
2041                 wl3501_reset(dev);
2042                 netif_device_attach(dev);
2043         }
2044
2045         return 0;
2046 }
2047
2048
2049 static struct pcmcia_device_id wl3501_ids[] = {
2050         PCMCIA_DEVICE_MANF_CARD(0xd601, 0x0001),
2051         PCMCIA_DEVICE_NULL
2052 };
2053 MODULE_DEVICE_TABLE(pcmcia, wl3501_ids);
2054
2055 static struct pcmcia_driver wl3501_driver = {
2056         .owner          = THIS_MODULE,
2057         .drv            = {
2058                 .name   = "wl3501_cs",
2059         },
2060         .probe          = wl3501_probe,
2061         .remove         = wl3501_detach,
2062         .id_table       = wl3501_ids,
2063         .suspend        = wl3501_suspend,
2064         .resume         = wl3501_resume,
2065 };
2066
2067 static int __init wl3501_init_module(void)
2068 {
2069         return pcmcia_register_driver(&wl3501_driver);
2070 }
2071
2072 static void __exit wl3501_exit_module(void)
2073 {
2074         pcmcia_unregister_driver(&wl3501_driver);
2075 }
2076
2077 module_init(wl3501_init_module);
2078 module_exit(wl3501_exit_module);
2079
2080 MODULE_AUTHOR("Fox Chen <mhchen@golf.ccl.itri.org.tw>, "
2081               "Arnaldo Carvalho de Melo <acme@conectiva.com.br>,"
2082               "Gustavo Niemeyer <niemeyer@conectiva.com>");
2083 MODULE_DESCRIPTION("Planet wl3501 wireless driver");
2084 MODULE_LICENSE("GPL");