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ath6kl: fix WLAN_ENABLE usage in ath6kl_close()
[deliverable/linux.git] / drivers / net / wireless / ath / ath6kl / main.c
1 /*
2 * Copyright (c) 2004-2011 Atheros Communications Inc.
3 *
4 * Permission to use, copy, modify, and/or distribute this software for any
5 * purpose with or without fee is hereby granted, provided that the above
6 * copyright notice and this permission notice appear in all copies.
7 *
8 * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
9 * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
10 * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
11 * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
12 * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
13 * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
14 * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
15 */
16
17 #include "core.h"
18 #include "hif-ops.h"
19 #include "cfg80211.h"
20 #include "target.h"
21 #include "debug.h"
22
23 struct ath6kl_sta *ath6kl_find_sta(struct ath6kl_vif *vif, u8 *node_addr)
24 {
25 struct ath6kl *ar = vif->ar;
26 struct ath6kl_sta *conn = NULL;
27 u8 i, max_conn;
28
29 max_conn = (vif->nw_type == AP_NETWORK) ? AP_MAX_NUM_STA : 0;
30
31 for (i = 0; i < max_conn; i++) {
32 if (memcmp(node_addr, ar->sta_list[i].mac, ETH_ALEN) == 0) {
33 conn = &ar->sta_list[i];
34 break;
35 }
36 }
37
38 return conn;
39 }
40
41 struct ath6kl_sta *ath6kl_find_sta_by_aid(struct ath6kl *ar, u8 aid)
42 {
43 struct ath6kl_sta *conn = NULL;
44 u8 ctr;
45
46 for (ctr = 0; ctr < AP_MAX_NUM_STA; ctr++) {
47 if (ar->sta_list[ctr].aid == aid) {
48 conn = &ar->sta_list[ctr];
49 break;
50 }
51 }
52 return conn;
53 }
54
55 static void ath6kl_add_new_sta(struct ath6kl *ar, u8 *mac, u16 aid, u8 *wpaie,
56 u8 ielen, u8 keymgmt, u8 ucipher, u8 auth)
57 {
58 struct ath6kl_sta *sta;
59 u8 free_slot;
60
61 free_slot = aid - 1;
62
63 sta = &ar->sta_list[free_slot];
64 memcpy(sta->mac, mac, ETH_ALEN);
65 if (ielen <= ATH6KL_MAX_IE)
66 memcpy(sta->wpa_ie, wpaie, ielen);
67 sta->aid = aid;
68 sta->keymgmt = keymgmt;
69 sta->ucipher = ucipher;
70 sta->auth = auth;
71
72 ar->sta_list_index = ar->sta_list_index | (1 << free_slot);
73 ar->ap_stats.sta[free_slot].aid = cpu_to_le32(aid);
74 }
75
76 static void ath6kl_sta_cleanup(struct ath6kl *ar, u8 i)
77 {
78 struct ath6kl_sta *sta = &ar->sta_list[i];
79
80 /* empty the queued pkts in the PS queue if any */
81 spin_lock_bh(&sta->psq_lock);
82 skb_queue_purge(&sta->psq);
83 spin_unlock_bh(&sta->psq_lock);
84
85 memset(&ar->ap_stats.sta[sta->aid - 1], 0,
86 sizeof(struct wmi_per_sta_stat));
87 memset(sta->mac, 0, ETH_ALEN);
88 memset(sta->wpa_ie, 0, ATH6KL_MAX_IE);
89 sta->aid = 0;
90 sta->sta_flags = 0;
91
92 ar->sta_list_index = ar->sta_list_index & ~(1 << i);
93
94 }
95
96 static u8 ath6kl_remove_sta(struct ath6kl *ar, u8 *mac, u16 reason)
97 {
98 u8 i, removed = 0;
99
100 if (is_zero_ether_addr(mac))
101 return removed;
102
103 if (is_broadcast_ether_addr(mac)) {
104 ath6kl_dbg(ATH6KL_DBG_TRC, "deleting all station\n");
105
106 for (i = 0; i < AP_MAX_NUM_STA; i++) {
107 if (!is_zero_ether_addr(ar->sta_list[i].mac)) {
108 ath6kl_sta_cleanup(ar, i);
109 removed = 1;
110 }
111 }
112 } else {
113 for (i = 0; i < AP_MAX_NUM_STA; i++) {
114 if (memcmp(ar->sta_list[i].mac, mac, ETH_ALEN) == 0) {
115 ath6kl_dbg(ATH6KL_DBG_TRC,
116 "deleting station %pM aid=%d reason=%d\n",
117 mac, ar->sta_list[i].aid, reason);
118 ath6kl_sta_cleanup(ar, i);
119 removed = 1;
120 break;
121 }
122 }
123 }
124
125 return removed;
126 }
127
128 enum htc_endpoint_id ath6kl_ac2_endpoint_id(void *devt, u8 ac)
129 {
130 struct ath6kl *ar = devt;
131 return ar->ac2ep_map[ac];
132 }
133
134 struct ath6kl_cookie *ath6kl_alloc_cookie(struct ath6kl *ar)
135 {
136 struct ath6kl_cookie *cookie;
137
138 cookie = ar->cookie_list;
139 if (cookie != NULL) {
140 ar->cookie_list = cookie->arc_list_next;
141 ar->cookie_count--;
142 }
143
144 return cookie;
145 }
146
147 void ath6kl_cookie_init(struct ath6kl *ar)
148 {
149 u32 i;
150
151 ar->cookie_list = NULL;
152 ar->cookie_count = 0;
153
154 memset(ar->cookie_mem, 0, sizeof(ar->cookie_mem));
155
156 for (i = 0; i < MAX_COOKIE_NUM; i++)
157 ath6kl_free_cookie(ar, &ar->cookie_mem[i]);
158 }
159
160 void ath6kl_cookie_cleanup(struct ath6kl *ar)
161 {
162 ar->cookie_list = NULL;
163 ar->cookie_count = 0;
164 }
165
166 void ath6kl_free_cookie(struct ath6kl *ar, struct ath6kl_cookie *cookie)
167 {
168 /* Insert first */
169
170 if (!ar || !cookie)
171 return;
172
173 cookie->arc_list_next = ar->cookie_list;
174 ar->cookie_list = cookie;
175 ar->cookie_count++;
176 }
177
178 /* set the window address register (using 4-byte register access ). */
179 static int ath6kl_set_addrwin_reg(struct ath6kl *ar, u32 reg_addr, u32 addr)
180 {
181 int status;
182 s32 i;
183 __le32 addr_val;
184
185 /*
186 * Write bytes 1,2,3 of the register to set the upper address bytes,
187 * the LSB is written last to initiate the access cycle
188 */
189
190 for (i = 1; i <= 3; i++) {
191 /*
192 * Fill the buffer with the address byte value we want to
193 * hit 4 times. No need to worry about endianness as the
194 * same byte is copied to all four bytes of addr_val at
195 * any time.
196 */
197 memset((u8 *)&addr_val, ((u8 *)&addr)[i], 4);
198
199 /*
200 * Hit each byte of the register address with a 4-byte
201 * write operation to the same address, this is a harmless
202 * operation.
203 */
204 status = hif_read_write_sync(ar, reg_addr + i, (u8 *)&addr_val,
205 4, HIF_WR_SYNC_BYTE_FIX);
206 if (status)
207 break;
208 }
209
210 if (status) {
211 ath6kl_err("failed to write initial bytes of 0x%x to window reg: 0x%X\n",
212 addr, reg_addr);
213 return status;
214 }
215
216 /*
217 * Write the address register again, this time write the whole
218 * 4-byte value. The effect here is that the LSB write causes the
219 * cycle to start, the extra 3 byte write to bytes 1,2,3 has no
220 * effect since we are writing the same values again
221 */
222 addr_val = cpu_to_le32(addr);
223 status = hif_read_write_sync(ar, reg_addr,
224 (u8 *)&(addr_val),
225 4, HIF_WR_SYNC_BYTE_INC);
226
227 if (status) {
228 ath6kl_err("failed to write 0x%x to window reg: 0x%X\n",
229 addr, reg_addr);
230 return status;
231 }
232
233 return 0;
234 }
235
236 /*
237 * Read from the hardware through its diagnostic window. No cooperation
238 * from the firmware is required for this.
239 */
240 int ath6kl_diag_read32(struct ath6kl *ar, u32 address, u32 *value)
241 {
242 int ret;
243
244 /* set window register to start read cycle */
245 ret = ath6kl_set_addrwin_reg(ar, WINDOW_READ_ADDR_ADDRESS, address);
246 if (ret)
247 return ret;
248
249 /* read the data */
250 ret = hif_read_write_sync(ar, WINDOW_DATA_ADDRESS, (u8 *) value,
251 sizeof(*value), HIF_RD_SYNC_BYTE_INC);
252 if (ret) {
253 ath6kl_warn("failed to read32 through diagnose window: %d\n",
254 ret);
255 return ret;
256 }
257
258 return 0;
259 }
260
261 /*
262 * Write to the ATH6KL through its diagnostic window. No cooperation from
263 * the Target is required for this.
264 */
265 int ath6kl_diag_write32(struct ath6kl *ar, u32 address, __le32 value)
266 {
267 int ret;
268
269 /* set write data */
270 ret = hif_read_write_sync(ar, WINDOW_DATA_ADDRESS, (u8 *) &value,
271 sizeof(value), HIF_WR_SYNC_BYTE_INC);
272 if (ret) {
273 ath6kl_err("failed to write 0x%x during diagnose window to 0x%d\n",
274 address, value);
275 return ret;
276 }
277
278 /* set window register, which starts the write cycle */
279 return ath6kl_set_addrwin_reg(ar, WINDOW_WRITE_ADDR_ADDRESS,
280 address);
281 }
282
283 int ath6kl_diag_read(struct ath6kl *ar, u32 address, void *data, u32 length)
284 {
285 u32 count, *buf = data;
286 int ret;
287
288 if (WARN_ON(length % 4))
289 return -EINVAL;
290
291 for (count = 0; count < length / 4; count++, address += 4) {
292 ret = ath6kl_diag_read32(ar, address, &buf[count]);
293 if (ret)
294 return ret;
295 }
296
297 return 0;
298 }
299
300 int ath6kl_diag_write(struct ath6kl *ar, u32 address, void *data, u32 length)
301 {
302 u32 count;
303 __le32 *buf = data;
304 int ret;
305
306 if (WARN_ON(length % 4))
307 return -EINVAL;
308
309 for (count = 0; count < length / 4; count++, address += 4) {
310 ret = ath6kl_diag_write32(ar, address, buf[count]);
311 if (ret)
312 return ret;
313 }
314
315 return 0;
316 }
317
318 int ath6kl_read_fwlogs(struct ath6kl *ar)
319 {
320 struct ath6kl_dbglog_hdr debug_hdr;
321 struct ath6kl_dbglog_buf debug_buf;
322 u32 address, length, dropped, firstbuf, debug_hdr_addr;
323 int ret = 0, loop;
324 u8 *buf;
325
326 buf = kmalloc(ATH6KL_FWLOG_PAYLOAD_SIZE, GFP_KERNEL);
327 if (!buf)
328 return -ENOMEM;
329
330 address = TARG_VTOP(ar->target_type,
331 ath6kl_get_hi_item_addr(ar,
332 HI_ITEM(hi_dbglog_hdr)));
333
334 ret = ath6kl_diag_read32(ar, address, &debug_hdr_addr);
335 if (ret)
336 goto out;
337
338 /* Get the contents of the ring buffer */
339 if (debug_hdr_addr == 0) {
340 ath6kl_warn("Invalid address for debug_hdr_addr\n");
341 ret = -EINVAL;
342 goto out;
343 }
344
345 address = TARG_VTOP(ar->target_type, debug_hdr_addr);
346 ath6kl_diag_read(ar, address, &debug_hdr, sizeof(debug_hdr));
347
348 address = TARG_VTOP(ar->target_type,
349 le32_to_cpu(debug_hdr.dbuf_addr));
350 firstbuf = address;
351 dropped = le32_to_cpu(debug_hdr.dropped);
352 ath6kl_diag_read(ar, address, &debug_buf, sizeof(debug_buf));
353
354 loop = 100;
355
356 do {
357 address = TARG_VTOP(ar->target_type,
358 le32_to_cpu(debug_buf.buffer_addr));
359 length = le32_to_cpu(debug_buf.length);
360
361 if (length != 0 && (le32_to_cpu(debug_buf.length) <=
362 le32_to_cpu(debug_buf.bufsize))) {
363 length = ALIGN(length, 4);
364
365 ret = ath6kl_diag_read(ar, address,
366 buf, length);
367 if (ret)
368 goto out;
369
370 ath6kl_debug_fwlog_event(ar, buf, length);
371 }
372
373 address = TARG_VTOP(ar->target_type,
374 le32_to_cpu(debug_buf.next));
375 ath6kl_diag_read(ar, address, &debug_buf, sizeof(debug_buf));
376 if (ret)
377 goto out;
378
379 loop--;
380
381 if (WARN_ON(loop == 0)) {
382 ret = -ETIMEDOUT;
383 goto out;
384 }
385 } while (address != firstbuf);
386
387 out:
388 kfree(buf);
389
390 return ret;
391 }
392
393 /* FIXME: move to a better place, target.h? */
394 #define AR6003_RESET_CONTROL_ADDRESS 0x00004000
395 #define AR6004_RESET_CONTROL_ADDRESS 0x00004000
396
397 void ath6kl_reset_device(struct ath6kl *ar, u32 target_type,
398 bool wait_fot_compltn, bool cold_reset)
399 {
400 int status = 0;
401 u32 address;
402 __le32 data;
403
404 if (target_type != TARGET_TYPE_AR6003 &&
405 target_type != TARGET_TYPE_AR6004)
406 return;
407
408 data = cold_reset ? cpu_to_le32(RESET_CONTROL_COLD_RST) :
409 cpu_to_le32(RESET_CONTROL_MBOX_RST);
410
411 switch (target_type) {
412 case TARGET_TYPE_AR6003:
413 address = AR6003_RESET_CONTROL_ADDRESS;
414 break;
415 case TARGET_TYPE_AR6004:
416 address = AR6004_RESET_CONTROL_ADDRESS;
417 break;
418 default:
419 address = AR6003_RESET_CONTROL_ADDRESS;
420 break;
421 }
422
423 status = ath6kl_diag_write32(ar, address, data);
424
425 if (status)
426 ath6kl_err("failed to reset target\n");
427 }
428
429 static void ath6kl_install_static_wep_keys(struct ath6kl_vif *vif)
430 {
431 u8 index;
432 u8 keyusage;
433
434 for (index = WMI_MIN_KEY_INDEX; index <= WMI_MAX_KEY_INDEX; index++) {
435 if (vif->wep_key_list[index].key_len) {
436 keyusage = GROUP_USAGE;
437 if (index == vif->def_txkey_index)
438 keyusage |= TX_USAGE;
439
440 ath6kl_wmi_addkey_cmd(vif->ar->wmi, vif->fw_vif_idx,
441 index,
442 WEP_CRYPT,
443 keyusage,
444 vif->wep_key_list[index].key_len,
445 NULL,
446 vif->wep_key_list[index].key,
447 KEY_OP_INIT_VAL, NULL,
448 NO_SYNC_WMIFLAG);
449 }
450 }
451 }
452
453 void ath6kl_connect_ap_mode_bss(struct ath6kl_vif *vif, u16 channel)
454 {
455 struct ath6kl *ar = vif->ar;
456 struct ath6kl_req_key *ik;
457 int res;
458 u8 key_rsc[ATH6KL_KEY_SEQ_LEN];
459
460 ik = &ar->ap_mode_bkey;
461
462 ath6kl_dbg(ATH6KL_DBG_WLAN_CFG, "AP mode started on %u MHz\n", channel);
463
464 switch (vif->auth_mode) {
465 case NONE_AUTH:
466 if (vif->prwise_crypto == WEP_CRYPT)
467 ath6kl_install_static_wep_keys(vif);
468 break;
469 case WPA_PSK_AUTH:
470 case WPA2_PSK_AUTH:
471 case (WPA_PSK_AUTH | WPA2_PSK_AUTH):
472 if (!ik->valid)
473 break;
474
475 ath6kl_dbg(ATH6KL_DBG_WLAN_CFG, "Delayed addkey for "
476 "the initial group key for AP mode\n");
477 memset(key_rsc, 0, sizeof(key_rsc));
478 res = ath6kl_wmi_addkey_cmd(
479 ar->wmi, vif->fw_vif_idx, ik->key_index, ik->key_type,
480 GROUP_USAGE, ik->key_len, key_rsc, ik->key,
481 KEY_OP_INIT_VAL, NULL, SYNC_BOTH_WMIFLAG);
482 if (res) {
483 ath6kl_dbg(ATH6KL_DBG_WLAN_CFG, "Delayed "
484 "addkey failed: %d\n", res);
485 }
486 break;
487 }
488
489 ath6kl_wmi_bssfilter_cmd(ar->wmi, vif->fw_vif_idx, NONE_BSS_FILTER, 0);
490 set_bit(CONNECTED, &vif->flags);
491 netif_carrier_on(vif->ndev);
492 }
493
494 void ath6kl_connect_ap_mode_sta(struct ath6kl_vif *vif, u16 aid, u8 *mac_addr,
495 u8 keymgmt, u8 ucipher, u8 auth,
496 u8 assoc_req_len, u8 *assoc_info)
497 {
498 struct ath6kl *ar = vif->ar;
499 u8 *ies = NULL, *wpa_ie = NULL, *pos;
500 size_t ies_len = 0;
501 struct station_info sinfo;
502
503 ath6kl_dbg(ATH6KL_DBG_TRC, "new station %pM aid=%d\n", mac_addr, aid);
504
505 if (assoc_req_len > sizeof(struct ieee80211_hdr_3addr)) {
506 struct ieee80211_mgmt *mgmt =
507 (struct ieee80211_mgmt *) assoc_info;
508 if (ieee80211_is_assoc_req(mgmt->frame_control) &&
509 assoc_req_len >= sizeof(struct ieee80211_hdr_3addr) +
510 sizeof(mgmt->u.assoc_req)) {
511 ies = mgmt->u.assoc_req.variable;
512 ies_len = assoc_info + assoc_req_len - ies;
513 } else if (ieee80211_is_reassoc_req(mgmt->frame_control) &&
514 assoc_req_len >= sizeof(struct ieee80211_hdr_3addr)
515 + sizeof(mgmt->u.reassoc_req)) {
516 ies = mgmt->u.reassoc_req.variable;
517 ies_len = assoc_info + assoc_req_len - ies;
518 }
519 }
520
521 pos = ies;
522 while (pos && pos + 1 < ies + ies_len) {
523 if (pos + 2 + pos[1] > ies + ies_len)
524 break;
525 if (pos[0] == WLAN_EID_RSN)
526 wpa_ie = pos; /* RSN IE */
527 else if (pos[0] == WLAN_EID_VENDOR_SPECIFIC &&
528 pos[1] >= 4 &&
529 pos[2] == 0x00 && pos[3] == 0x50 && pos[4] == 0xf2) {
530 if (pos[5] == 0x01)
531 wpa_ie = pos; /* WPA IE */
532 else if (pos[5] == 0x04) {
533 wpa_ie = pos; /* WPS IE */
534 break; /* overrides WPA/RSN IE */
535 }
536 }
537 pos += 2 + pos[1];
538 }
539
540 ath6kl_add_new_sta(ar, mac_addr, aid, wpa_ie,
541 wpa_ie ? 2 + wpa_ie[1] : 0,
542 keymgmt, ucipher, auth);
543
544 /* send event to application */
545 memset(&sinfo, 0, sizeof(sinfo));
546
547 /* TODO: sinfo.generation */
548
549 sinfo.assoc_req_ies = ies;
550 sinfo.assoc_req_ies_len = ies_len;
551 sinfo.filled |= STATION_INFO_ASSOC_REQ_IES;
552
553 cfg80211_new_sta(vif->ndev, mac_addr, &sinfo, GFP_KERNEL);
554
555 netif_wake_queue(vif->ndev);
556 }
557
558 void disconnect_timer_handler(unsigned long ptr)
559 {
560 struct net_device *dev = (struct net_device *)ptr;
561 struct ath6kl_vif *vif = netdev_priv(dev);
562
563 ath6kl_init_profile_info(vif);
564 ath6kl_disconnect(vif);
565 }
566
567 void ath6kl_disconnect(struct ath6kl_vif *vif)
568 {
569 if (test_bit(CONNECTED, &vif->flags) ||
570 test_bit(CONNECT_PEND, &vif->flags)) {
571 ath6kl_wmi_disconnect_cmd(vif->ar->wmi, vif->fw_vif_idx);
572 /*
573 * Disconnect command is issued, clear the connect pending
574 * flag. The connected flag will be cleared in
575 * disconnect event notification.
576 */
577 clear_bit(CONNECT_PEND, &vif->flags);
578 }
579 }
580
581 void ath6kl_deep_sleep_enable(struct ath6kl *ar)
582 {
583 struct ath6kl_vif *vif;
584
585 /* FIXME: for multi vif */
586 vif = ath6kl_vif_first(ar);
587 if (!vif) {
588 /* save the current power mode before enabling power save */
589 ar->wmi->saved_pwr_mode = ar->wmi->pwr_mode;
590
591 if (ath6kl_wmi_powermode_cmd(ar->wmi, 0, REC_POWER) != 0)
592 ath6kl_warn("ath6kl_deep_sleep_enable: "
593 "wmi_powermode_cmd failed\n");
594 return;
595 }
596
597 switch (vif->sme_state) {
598 case SME_CONNECTING:
599 cfg80211_connect_result(vif->ndev, vif->bssid, NULL, 0,
600 NULL, 0,
601 WLAN_STATUS_UNSPECIFIED_FAILURE,
602 GFP_KERNEL);
603 break;
604 case SME_CONNECTED:
605 default:
606 /*
607 * FIXME: oddly enough smeState is in DISCONNECTED during
608 * suspend, why? Need to send disconnected event in that
609 * state.
610 */
611 cfg80211_disconnected(vif->ndev, 0, NULL, 0, GFP_KERNEL);
612 break;
613 }
614
615 if (test_bit(CONNECTED, &vif->flags) ||
616 test_bit(CONNECT_PEND, &vif->flags))
617 ath6kl_wmi_disconnect_cmd(ar->wmi, vif->fw_vif_idx);
618
619 vif->sme_state = SME_DISCONNECTED;
620
621 /* disable scanning */
622 if (ath6kl_wmi_scanparams_cmd(ar->wmi, vif->fw_vif_idx, 0xFFFF, 0, 0,
623 0, 0, 0, 0, 0, 0, 0) != 0)
624 printk(KERN_WARNING "ath6kl: failed to disable scan "
625 "during suspend\n");
626
627 ath6kl_cfg80211_scan_complete_event(vif, -ECANCELED);
628
629 /* save the current power mode before enabling power save */
630 ar->wmi->saved_pwr_mode = ar->wmi->pwr_mode;
631
632 if (ath6kl_wmi_powermode_cmd(ar->wmi, 0, REC_POWER) != 0)
633 ath6kl_warn("ath6kl_deep_sleep_enable: "
634 "wmi_powermode_cmd failed\n");
635 }
636
637 /* WMI Event handlers */
638
639 static const char *get_hw_id_string(u32 id)
640 {
641 switch (id) {
642 case AR6003_REV1_VERSION:
643 return "1.0";
644 case AR6003_REV2_VERSION:
645 return "2.0";
646 case AR6003_REV3_VERSION:
647 return "2.1.1";
648 default:
649 return "unknown";
650 }
651 }
652
653 void ath6kl_ready_event(void *devt, u8 *datap, u32 sw_ver, u32 abi_ver)
654 {
655 struct ath6kl *ar = devt;
656
657 memcpy(ar->mac_addr, datap, ETH_ALEN);
658 ath6kl_dbg(ATH6KL_DBG_TRC, "%s: mac addr = %pM\n",
659 __func__, ar->mac_addr);
660
661 ar->version.wlan_ver = sw_ver;
662 ar->version.abi_ver = abi_ver;
663
664 snprintf(ar->wiphy->fw_version,
665 sizeof(ar->wiphy->fw_version),
666 "%u.%u.%u.%u",
667 (ar->version.wlan_ver & 0xf0000000) >> 28,
668 (ar->version.wlan_ver & 0x0f000000) >> 24,
669 (ar->version.wlan_ver & 0x00ff0000) >> 16,
670 (ar->version.wlan_ver & 0x0000ffff));
671
672 /* indicate to the waiting thread that the ready event was received */
673 set_bit(WMI_READY, &ar->flag);
674 wake_up(&ar->event_wq);
675
676 if (test_and_clear_bit(FIRST_BOOT, &ar->flag)) {
677 ath6kl_info("hw %s fw %s%s\n",
678 get_hw_id_string(ar->wiphy->hw_version),
679 ar->wiphy->fw_version,
680 test_bit(TESTMODE, &ar->flag) ? " testmode" : "");
681 }
682 }
683
684 void ath6kl_scan_complete_evt(struct ath6kl_vif *vif, int status)
685 {
686 struct ath6kl *ar = vif->ar;
687
688 ath6kl_cfg80211_scan_complete_event(vif, status);
689
690 if (!ar->usr_bss_filter) {
691 clear_bit(CLEAR_BSSFILTER_ON_BEACON, &vif->flags);
692 ath6kl_wmi_bssfilter_cmd(ar->wmi, vif->fw_vif_idx,
693 NONE_BSS_FILTER, 0);
694 }
695
696 ath6kl_dbg(ATH6KL_DBG_WLAN_CFG, "scan complete: %d\n", status);
697 }
698
699 void ath6kl_connect_event(struct ath6kl_vif *vif, u16 channel, u8 *bssid,
700 u16 listen_int, u16 beacon_int,
701 enum network_type net_type, u8 beacon_ie_len,
702 u8 assoc_req_len, u8 assoc_resp_len,
703 u8 *assoc_info)
704 {
705 struct ath6kl *ar = vif->ar;
706
707 ath6kl_cfg80211_connect_event(vif, channel, bssid,
708 listen_int, beacon_int,
709 net_type, beacon_ie_len,
710 assoc_req_len, assoc_resp_len,
711 assoc_info);
712
713 memcpy(vif->bssid, bssid, sizeof(vif->bssid));
714 vif->bss_ch = channel;
715
716 if ((vif->nw_type == INFRA_NETWORK))
717 ath6kl_wmi_listeninterval_cmd(ar->wmi, vif->fw_vif_idx,
718 ar->listen_intvl_t,
719 ar->listen_intvl_b);
720
721 netif_wake_queue(vif->ndev);
722
723 /* Update connect & link status atomically */
724 spin_lock_bh(&vif->if_lock);
725 set_bit(CONNECTED, &vif->flags);
726 clear_bit(CONNECT_PEND, &vif->flags);
727 netif_carrier_on(vif->ndev);
728 spin_unlock_bh(&vif->if_lock);
729
730 aggr_reset_state(vif->aggr_cntxt);
731 vif->reconnect_flag = 0;
732
733 if ((vif->nw_type == ADHOC_NETWORK) && ar->ibss_ps_enable) {
734 memset(ar->node_map, 0, sizeof(ar->node_map));
735 ar->node_num = 0;
736 ar->next_ep_id = ENDPOINT_2;
737 }
738
739 if (!ar->usr_bss_filter) {
740 set_bit(CLEAR_BSSFILTER_ON_BEACON, &vif->flags);
741 ath6kl_wmi_bssfilter_cmd(ar->wmi, vif->fw_vif_idx,
742 CURRENT_BSS_FILTER, 0);
743 }
744 }
745
746 void ath6kl_tkip_micerr_event(struct ath6kl_vif *vif, u8 keyid, bool ismcast)
747 {
748 struct ath6kl_sta *sta;
749 struct ath6kl *ar = vif->ar;
750 u8 tsc[6];
751
752 /*
753 * For AP case, keyid will have aid of STA which sent pkt with
754 * MIC error. Use this aid to get MAC & send it to hostapd.
755 */
756 if (vif->nw_type == AP_NETWORK) {
757 sta = ath6kl_find_sta_by_aid(ar, (keyid >> 2));
758 if (!sta)
759 return;
760
761 ath6kl_dbg(ATH6KL_DBG_TRC,
762 "ap tkip mic error received from aid=%d\n", keyid);
763
764 memset(tsc, 0, sizeof(tsc)); /* FIX: get correct TSC */
765 cfg80211_michael_mic_failure(vif->ndev, sta->mac,
766 NL80211_KEYTYPE_PAIRWISE, keyid,
767 tsc, GFP_KERNEL);
768 } else
769 ath6kl_cfg80211_tkip_micerr_event(vif, keyid, ismcast);
770
771 }
772
773 static void ath6kl_update_target_stats(struct ath6kl_vif *vif, u8 *ptr, u32 len)
774 {
775 struct wmi_target_stats *tgt_stats =
776 (struct wmi_target_stats *) ptr;
777 struct ath6kl *ar = vif->ar;
778 struct target_stats *stats = &vif->target_stats;
779 struct tkip_ccmp_stats *ccmp_stats;
780 u8 ac;
781
782 if (len < sizeof(*tgt_stats))
783 return;
784
785 ath6kl_dbg(ATH6KL_DBG_TRC, "updating target stats\n");
786
787 stats->tx_pkt += le32_to_cpu(tgt_stats->stats.tx.pkt);
788 stats->tx_byte += le32_to_cpu(tgt_stats->stats.tx.byte);
789 stats->tx_ucast_pkt += le32_to_cpu(tgt_stats->stats.tx.ucast_pkt);
790 stats->tx_ucast_byte += le32_to_cpu(tgt_stats->stats.tx.ucast_byte);
791 stats->tx_mcast_pkt += le32_to_cpu(tgt_stats->stats.tx.mcast_pkt);
792 stats->tx_mcast_byte += le32_to_cpu(tgt_stats->stats.tx.mcast_byte);
793 stats->tx_bcast_pkt += le32_to_cpu(tgt_stats->stats.tx.bcast_pkt);
794 stats->tx_bcast_byte += le32_to_cpu(tgt_stats->stats.tx.bcast_byte);
795 stats->tx_rts_success_cnt +=
796 le32_to_cpu(tgt_stats->stats.tx.rts_success_cnt);
797
798 for (ac = 0; ac < WMM_NUM_AC; ac++)
799 stats->tx_pkt_per_ac[ac] +=
800 le32_to_cpu(tgt_stats->stats.tx.pkt_per_ac[ac]);
801
802 stats->tx_err += le32_to_cpu(tgt_stats->stats.tx.err);
803 stats->tx_fail_cnt += le32_to_cpu(tgt_stats->stats.tx.fail_cnt);
804 stats->tx_retry_cnt += le32_to_cpu(tgt_stats->stats.tx.retry_cnt);
805 stats->tx_mult_retry_cnt +=
806 le32_to_cpu(tgt_stats->stats.tx.mult_retry_cnt);
807 stats->tx_rts_fail_cnt +=
808 le32_to_cpu(tgt_stats->stats.tx.rts_fail_cnt);
809 stats->tx_ucast_rate =
810 ath6kl_wmi_get_rate(a_sle32_to_cpu(tgt_stats->stats.tx.ucast_rate));
811
812 stats->rx_pkt += le32_to_cpu(tgt_stats->stats.rx.pkt);
813 stats->rx_byte += le32_to_cpu(tgt_stats->stats.rx.byte);
814 stats->rx_ucast_pkt += le32_to_cpu(tgt_stats->stats.rx.ucast_pkt);
815 stats->rx_ucast_byte += le32_to_cpu(tgt_stats->stats.rx.ucast_byte);
816 stats->rx_mcast_pkt += le32_to_cpu(tgt_stats->stats.rx.mcast_pkt);
817 stats->rx_mcast_byte += le32_to_cpu(tgt_stats->stats.rx.mcast_byte);
818 stats->rx_bcast_pkt += le32_to_cpu(tgt_stats->stats.rx.bcast_pkt);
819 stats->rx_bcast_byte += le32_to_cpu(tgt_stats->stats.rx.bcast_byte);
820 stats->rx_frgment_pkt += le32_to_cpu(tgt_stats->stats.rx.frgment_pkt);
821 stats->rx_err += le32_to_cpu(tgt_stats->stats.rx.err);
822 stats->rx_crc_err += le32_to_cpu(tgt_stats->stats.rx.crc_err);
823 stats->rx_key_cache_miss +=
824 le32_to_cpu(tgt_stats->stats.rx.key_cache_miss);
825 stats->rx_decrypt_err += le32_to_cpu(tgt_stats->stats.rx.decrypt_err);
826 stats->rx_dupl_frame += le32_to_cpu(tgt_stats->stats.rx.dupl_frame);
827 stats->rx_ucast_rate =
828 ath6kl_wmi_get_rate(a_sle32_to_cpu(tgt_stats->stats.rx.ucast_rate));
829
830 ccmp_stats = &tgt_stats->stats.tkip_ccmp_stats;
831
832 stats->tkip_local_mic_fail +=
833 le32_to_cpu(ccmp_stats->tkip_local_mic_fail);
834 stats->tkip_cnter_measures_invoked +=
835 le32_to_cpu(ccmp_stats->tkip_cnter_measures_invoked);
836 stats->tkip_fmt_err += le32_to_cpu(ccmp_stats->tkip_fmt_err);
837
838 stats->ccmp_fmt_err += le32_to_cpu(ccmp_stats->ccmp_fmt_err);
839 stats->ccmp_replays += le32_to_cpu(ccmp_stats->ccmp_replays);
840
841 stats->pwr_save_fail_cnt +=
842 le32_to_cpu(tgt_stats->pm_stats.pwr_save_failure_cnt);
843 stats->noise_floor_calib =
844 a_sle32_to_cpu(tgt_stats->noise_floor_calib);
845
846 stats->cs_bmiss_cnt +=
847 le32_to_cpu(tgt_stats->cserv_stats.cs_bmiss_cnt);
848 stats->cs_low_rssi_cnt +=
849 le32_to_cpu(tgt_stats->cserv_stats.cs_low_rssi_cnt);
850 stats->cs_connect_cnt +=
851 le16_to_cpu(tgt_stats->cserv_stats.cs_connect_cnt);
852 stats->cs_discon_cnt +=
853 le16_to_cpu(tgt_stats->cserv_stats.cs_discon_cnt);
854
855 stats->cs_ave_beacon_rssi =
856 a_sle16_to_cpu(tgt_stats->cserv_stats.cs_ave_beacon_rssi);
857
858 stats->cs_last_roam_msec =
859 tgt_stats->cserv_stats.cs_last_roam_msec;
860 stats->cs_snr = tgt_stats->cserv_stats.cs_snr;
861 stats->cs_rssi = a_sle16_to_cpu(tgt_stats->cserv_stats.cs_rssi);
862
863 stats->lq_val = le32_to_cpu(tgt_stats->lq_val);
864
865 stats->wow_pkt_dropped +=
866 le32_to_cpu(tgt_stats->wow_stats.wow_pkt_dropped);
867 stats->wow_host_pkt_wakeups +=
868 tgt_stats->wow_stats.wow_host_pkt_wakeups;
869 stats->wow_host_evt_wakeups +=
870 tgt_stats->wow_stats.wow_host_evt_wakeups;
871 stats->wow_evt_discarded +=
872 le16_to_cpu(tgt_stats->wow_stats.wow_evt_discarded);
873
874 if (test_bit(STATS_UPDATE_PEND, &vif->flags)) {
875 clear_bit(STATS_UPDATE_PEND, &vif->flags);
876 wake_up(&ar->event_wq);
877 }
878 }
879
880 static void ath6kl_add_le32(__le32 *var, __le32 val)
881 {
882 *var = cpu_to_le32(le32_to_cpu(*var) + le32_to_cpu(val));
883 }
884
885 void ath6kl_tgt_stats_event(struct ath6kl_vif *vif, u8 *ptr, u32 len)
886 {
887 struct wmi_ap_mode_stat *p = (struct wmi_ap_mode_stat *) ptr;
888 struct ath6kl *ar = vif->ar;
889 struct wmi_ap_mode_stat *ap = &ar->ap_stats;
890 struct wmi_per_sta_stat *st_ap, *st_p;
891 u8 ac;
892
893 if (vif->nw_type == AP_NETWORK) {
894 if (len < sizeof(*p))
895 return;
896
897 for (ac = 0; ac < AP_MAX_NUM_STA; ac++) {
898 st_ap = &ap->sta[ac];
899 st_p = &p->sta[ac];
900
901 ath6kl_add_le32(&st_ap->tx_bytes, st_p->tx_bytes);
902 ath6kl_add_le32(&st_ap->tx_pkts, st_p->tx_pkts);
903 ath6kl_add_le32(&st_ap->tx_error, st_p->tx_error);
904 ath6kl_add_le32(&st_ap->tx_discard, st_p->tx_discard);
905 ath6kl_add_le32(&st_ap->rx_bytes, st_p->rx_bytes);
906 ath6kl_add_le32(&st_ap->rx_pkts, st_p->rx_pkts);
907 ath6kl_add_le32(&st_ap->rx_error, st_p->rx_error);
908 ath6kl_add_le32(&st_ap->rx_discard, st_p->rx_discard);
909 }
910
911 } else {
912 ath6kl_update_target_stats(vif, ptr, len);
913 }
914 }
915
916 void ath6kl_wakeup_event(void *dev)
917 {
918 struct ath6kl *ar = (struct ath6kl *) dev;
919
920 wake_up(&ar->event_wq);
921 }
922
923 void ath6kl_txpwr_rx_evt(void *devt, u8 tx_pwr)
924 {
925 struct ath6kl *ar = (struct ath6kl *) devt;
926
927 ar->tx_pwr = tx_pwr;
928 wake_up(&ar->event_wq);
929 }
930
931 void ath6kl_pspoll_event(struct ath6kl_vif *vif, u8 aid)
932 {
933 struct ath6kl_sta *conn;
934 struct sk_buff *skb;
935 bool psq_empty = false;
936 struct ath6kl *ar = vif->ar;
937
938 conn = ath6kl_find_sta_by_aid(ar, aid);
939
940 if (!conn)
941 return;
942 /*
943 * Send out a packet queued on ps queue. When the ps queue
944 * becomes empty update the PVB for this station.
945 */
946 spin_lock_bh(&conn->psq_lock);
947 psq_empty = skb_queue_empty(&conn->psq);
948 spin_unlock_bh(&conn->psq_lock);
949
950 if (psq_empty)
951 /* TODO: Send out a NULL data frame */
952 return;
953
954 spin_lock_bh(&conn->psq_lock);
955 skb = skb_dequeue(&conn->psq);
956 spin_unlock_bh(&conn->psq_lock);
957
958 conn->sta_flags |= STA_PS_POLLED;
959 ath6kl_data_tx(skb, vif->ndev);
960 conn->sta_flags &= ~STA_PS_POLLED;
961
962 spin_lock_bh(&conn->psq_lock);
963 psq_empty = skb_queue_empty(&conn->psq);
964 spin_unlock_bh(&conn->psq_lock);
965
966 if (psq_empty)
967 ath6kl_wmi_set_pvb_cmd(ar->wmi, vif->fw_vif_idx, conn->aid, 0);
968 }
969
970 void ath6kl_dtimexpiry_event(struct ath6kl_vif *vif)
971 {
972 bool mcastq_empty = false;
973 struct sk_buff *skb;
974 struct ath6kl *ar = vif->ar;
975
976 /*
977 * If there are no associated STAs, ignore the DTIM expiry event.
978 * There can be potential race conditions where the last associated
979 * STA may disconnect & before the host could clear the 'Indicate
980 * DTIM' request to the firmware, the firmware would have just
981 * indicated a DTIM expiry event. The race is between 'clear DTIM
982 * expiry cmd' going from the host to the firmware & the DTIM
983 * expiry event happening from the firmware to the host.
984 */
985 if (!ar->sta_list_index)
986 return;
987
988 spin_lock_bh(&ar->mcastpsq_lock);
989 mcastq_empty = skb_queue_empty(&ar->mcastpsq);
990 spin_unlock_bh(&ar->mcastpsq_lock);
991
992 if (mcastq_empty)
993 return;
994
995 /* set the STA flag to dtim_expired for the frame to go out */
996 set_bit(DTIM_EXPIRED, &vif->flags);
997
998 spin_lock_bh(&ar->mcastpsq_lock);
999 while ((skb = skb_dequeue(&ar->mcastpsq)) != NULL) {
1000 spin_unlock_bh(&ar->mcastpsq_lock);
1001
1002 ath6kl_data_tx(skb, vif->ndev);
1003
1004 spin_lock_bh(&ar->mcastpsq_lock);
1005 }
1006 spin_unlock_bh(&ar->mcastpsq_lock);
1007
1008 clear_bit(DTIM_EXPIRED, &vif->flags);
1009
1010 /* clear the LSB of the BitMapCtl field of the TIM IE */
1011 ath6kl_wmi_set_pvb_cmd(ar->wmi, vif->fw_vif_idx, MCAST_AID, 0);
1012 }
1013
1014 void ath6kl_disconnect_event(struct ath6kl_vif *vif, u8 reason, u8 *bssid,
1015 u8 assoc_resp_len, u8 *assoc_info,
1016 u16 prot_reason_status)
1017 {
1018 struct ath6kl *ar = vif->ar;
1019
1020 if (vif->nw_type == AP_NETWORK) {
1021 if (!ath6kl_remove_sta(ar, bssid, prot_reason_status))
1022 return;
1023
1024 /* if no more associated STAs, empty the mcast PS q */
1025 if (ar->sta_list_index == 0) {
1026 spin_lock_bh(&ar->mcastpsq_lock);
1027 skb_queue_purge(&ar->mcastpsq);
1028 spin_unlock_bh(&ar->mcastpsq_lock);
1029
1030 /* clear the LSB of the TIM IE's BitMapCtl field */
1031 if (test_bit(WMI_READY, &ar->flag))
1032 ath6kl_wmi_set_pvb_cmd(ar->wmi, vif->fw_vif_idx,
1033 MCAST_AID, 0);
1034 }
1035
1036 if (!is_broadcast_ether_addr(bssid)) {
1037 /* send event to application */
1038 cfg80211_del_sta(vif->ndev, bssid, GFP_KERNEL);
1039 }
1040
1041 if (memcmp(vif->ndev->dev_addr, bssid, ETH_ALEN) == 0) {
1042 memset(vif->wep_key_list, 0, sizeof(vif->wep_key_list));
1043 clear_bit(CONNECTED, &vif->flags);
1044 }
1045 return;
1046 }
1047
1048 ath6kl_cfg80211_disconnect_event(vif, reason, bssid,
1049 assoc_resp_len, assoc_info,
1050 prot_reason_status);
1051
1052 aggr_reset_state(vif->aggr_cntxt);
1053
1054 del_timer(&vif->disconnect_timer);
1055
1056 ath6kl_dbg(ATH6KL_DBG_WLAN_CFG, "disconnect reason is %d\n", reason);
1057
1058 /*
1059 * If the event is due to disconnect cmd from the host, only they
1060 * the target would stop trying to connect. Under any other
1061 * condition, target would keep trying to connect.
1062 */
1063 if (reason == DISCONNECT_CMD) {
1064 if (!ar->usr_bss_filter && test_bit(WMI_READY, &ar->flag))
1065 ath6kl_wmi_bssfilter_cmd(ar->wmi, vif->fw_vif_idx,
1066 NONE_BSS_FILTER, 0);
1067 } else {
1068 set_bit(CONNECT_PEND, &vif->flags);
1069 if (((reason == ASSOC_FAILED) &&
1070 (prot_reason_status == 0x11)) ||
1071 ((reason == ASSOC_FAILED) && (prot_reason_status == 0x0)
1072 && (vif->reconnect_flag == 1))) {
1073 set_bit(CONNECTED, &vif->flags);
1074 return;
1075 }
1076 }
1077
1078 /* update connect & link status atomically */
1079 spin_lock_bh(&vif->if_lock);
1080 clear_bit(CONNECTED, &vif->flags);
1081 netif_carrier_off(vif->ndev);
1082 spin_unlock_bh(&vif->if_lock);
1083
1084 if ((reason != CSERV_DISCONNECT) || (vif->reconnect_flag != 1))
1085 vif->reconnect_flag = 0;
1086
1087 if (reason != CSERV_DISCONNECT)
1088 ar->user_key_ctrl = 0;
1089
1090 netif_stop_queue(vif->ndev);
1091 memset(vif->bssid, 0, sizeof(vif->bssid));
1092 vif->bss_ch = 0;
1093
1094 ath6kl_tx_data_cleanup(ar);
1095 }
1096
1097 struct ath6kl_vif *ath6kl_vif_first(struct ath6kl *ar)
1098 {
1099 struct ath6kl_vif *vif;
1100
1101 spin_lock(&ar->list_lock);
1102 if (list_empty(&ar->vif_list)) {
1103 spin_unlock(&ar->list_lock);
1104 return NULL;
1105 }
1106
1107 vif = list_first_entry(&ar->vif_list, struct ath6kl_vif, list);
1108
1109 spin_unlock(&ar->list_lock);
1110
1111 return vif;
1112 }
1113
1114 static int ath6kl_open(struct net_device *dev)
1115 {
1116 struct ath6kl_vif *vif = netdev_priv(dev);
1117 int ret;
1118
1119 /* FIXME: how to handle multi vif support? */
1120 ret = ath6kl_init_hw_start(vif->ar);
1121 if (ret)
1122 return ret;
1123
1124 set_bit(WLAN_ENABLED, &vif->flags);
1125
1126 if (test_bit(CONNECTED, &vif->flags)) {
1127 netif_carrier_on(dev);
1128 netif_wake_queue(dev);
1129 } else
1130 netif_carrier_off(dev);
1131
1132 return 0;
1133 }
1134
1135 static int ath6kl_close(struct net_device *dev)
1136 {
1137 struct ath6kl *ar = ath6kl_priv(dev);
1138 struct ath6kl_vif *vif = netdev_priv(dev);
1139 int ret;
1140
1141 netif_stop_queue(dev);
1142
1143 ath6kl_disconnect(vif);
1144
1145 if (test_bit(WMI_READY, &ar->flag)) {
1146 if (ath6kl_wmi_scanparams_cmd(ar->wmi, vif->fw_vif_idx, 0xFFFF,
1147 0, 0, 0, 0, 0, 0, 0, 0, 0))
1148 return -EIO;
1149
1150 }
1151
1152 ath6kl_cfg80211_scan_complete_event(vif, -ECANCELED);
1153
1154 /* FIXME: how to handle multi vif support? */
1155 ret = ath6kl_init_hw_stop(ar);
1156 if (ret)
1157 return ret;
1158
1159 clear_bit(WLAN_ENABLED, &vif->flags);
1160
1161 return 0;
1162 }
1163
1164 static struct net_device_stats *ath6kl_get_stats(struct net_device *dev)
1165 {
1166 struct ath6kl_vif *vif = netdev_priv(dev);
1167
1168 return &vif->net_stats;
1169 }
1170
1171 static struct net_device_ops ath6kl_netdev_ops = {
1172 .ndo_open = ath6kl_open,
1173 .ndo_stop = ath6kl_close,
1174 .ndo_start_xmit = ath6kl_data_tx,
1175 .ndo_get_stats = ath6kl_get_stats,
1176 };
1177
1178 void init_netdev(struct net_device *dev)
1179 {
1180 dev->netdev_ops = &ath6kl_netdev_ops;
1181 dev->destructor = free_netdev;
1182 dev->watchdog_timeo = ATH6KL_TX_TIMEOUT;
1183
1184 dev->needed_headroom = ETH_HLEN;
1185 dev->needed_headroom += sizeof(struct ath6kl_llc_snap_hdr) +
1186 sizeof(struct wmi_data_hdr) + HTC_HDR_LENGTH
1187 + WMI_MAX_TX_META_SZ + ATH6KL_HTC_ALIGN_BYTES;
1188
1189 return;
1190 }
Linux kernel - Deliverables
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