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mac80211: pass vif param to conf_tx() callback
[linux-2.6/linux-acpi-2.6/ibm-acpi-2.6.git] / drivers / net / wireless / wl12xx / main.c
blobe2d6edd2fcd2f722af36d8c49409f44adc269c7a
1 /*
2 * This file is part of wl1271
3 *
4 * Copyright (C) 2008-2010 Nokia Corporation
5 *
6 * Contact: Luciano Coelho <luciano.coelho@nokia.com>
7 *
8 * This program is free software; you can redistribute it and/or
9 * modify it under the terms of the GNU General Public License
10 * version 2 as published by the Free Software Foundation.
11 *
12 * This program is distributed in the hope that it will be useful, but
13 * WITHOUT ANY WARRANTY; without even the implied warranty of
14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
15 * General Public License for more details.
16 *
17 * You should have received a copy of the GNU General Public License
18 * along with this program; if not, write to the Free Software
19 * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA
20 * 02110-1301 USA
21 *
22 */
23
24 #include <linux/module.h>
25 #include <linux/firmware.h>
26 #include <linux/delay.h>
27 #include <linux/spi/spi.h>
28 #include <linux/crc32.h>
29 #include <linux/etherdevice.h>
30 #include <linux/vmalloc.h>
31 #include <linux/platform_device.h>
32 #include <linux/slab.h>
33 #include <linux/wl12xx.h>
34 #include <linux/sched.h>
35
36 #include "wl12xx.h"
37 #include "wl12xx_80211.h"
38 #include "reg.h"
39 #include "io.h"
40 #include "event.h"
41 #include "tx.h"
42 #include "rx.h"
43 #include "ps.h"
44 #include "init.h"
45 #include "debugfs.h"
46 #include "cmd.h"
47 #include "boot.h"
48 #include "testmode.h"
49 #include "scan.h"
50
51 #define WL1271_BOOT_RETRIES 3
52
53 static struct conf_drv_settings default_conf = {
54 .sg = {
55 .params = {
56 [CONF_SG_ACL_BT_MASTER_MIN_BR] = 10,
57 [CONF_SG_ACL_BT_MASTER_MAX_BR] = 180,
58 [CONF_SG_ACL_BT_SLAVE_MIN_BR] = 10,
59 [CONF_SG_ACL_BT_SLAVE_MAX_BR] = 180,
60 [CONF_SG_ACL_BT_MASTER_MIN_EDR] = 10,
61 [CONF_SG_ACL_BT_MASTER_MAX_EDR] = 80,
62 [CONF_SG_ACL_BT_SLAVE_MIN_EDR] = 10,
63 [CONF_SG_ACL_BT_SLAVE_MAX_EDR] = 80,
64 [CONF_SG_ACL_WLAN_PS_MASTER_BR] = 8,
65 [CONF_SG_ACL_WLAN_PS_SLAVE_BR] = 8,
66 [CONF_SG_ACL_WLAN_PS_MASTER_EDR] = 20,
67 [CONF_SG_ACL_WLAN_PS_SLAVE_EDR] = 20,
68 [CONF_SG_ACL_WLAN_ACTIVE_MASTER_MIN_BR] = 20,
69 [CONF_SG_ACL_WLAN_ACTIVE_MASTER_MAX_BR] = 35,
70 [CONF_SG_ACL_WLAN_ACTIVE_SLAVE_MIN_BR] = 16,
71 [CONF_SG_ACL_WLAN_ACTIVE_SLAVE_MAX_BR] = 35,
72 [CONF_SG_ACL_WLAN_ACTIVE_MASTER_MIN_EDR] = 32,
73 [CONF_SG_ACL_WLAN_ACTIVE_MASTER_MAX_EDR] = 50,
74 [CONF_SG_ACL_WLAN_ACTIVE_SLAVE_MIN_EDR] = 28,
75 [CONF_SG_ACL_WLAN_ACTIVE_SLAVE_MAX_EDR] = 50,
76 [CONF_SG_ACL_ACTIVE_SCAN_WLAN_BR] = 10,
77 [CONF_SG_ACL_ACTIVE_SCAN_WLAN_EDR] = 20,
78 [CONF_SG_ACL_PASSIVE_SCAN_BT_BR] = 75,
79 [CONF_SG_ACL_PASSIVE_SCAN_WLAN_BR] = 15,
80 [CONF_SG_ACL_PASSIVE_SCAN_BT_EDR] = 27,
81 [CONF_SG_ACL_PASSIVE_SCAN_WLAN_EDR] = 17,
82 /* active scan params */
83 [CONF_SG_AUTO_SCAN_PROBE_REQ] = 170,
84 [CONF_SG_ACTIVE_SCAN_DURATION_FACTOR_HV3] = 50,
85 [CONF_SG_ACTIVE_SCAN_DURATION_FACTOR_A2DP] = 100,
86 /* passive scan params */
87 [CONF_SG_PASSIVE_SCAN_DURATION_FACTOR_A2DP_BR] = 800,
88 [CONF_SG_PASSIVE_SCAN_DURATION_FACTOR_A2DP_EDR] = 200,
89 [CONF_SG_PASSIVE_SCAN_DURATION_FACTOR_HV3] = 200,
90 /* passive scan in dual antenna params */
91 [CONF_SG_CONSECUTIVE_HV3_IN_PASSIVE_SCAN] = 0,
92 [CONF_SG_BCN_HV3_COLLISION_THRESH_IN_PASSIVE_SCAN] = 0,
93 [CONF_SG_TX_RX_PROTECTION_BWIDTH_IN_PASSIVE_SCAN] = 0,
94 /* general params */
95 [CONF_SG_STA_FORCE_PS_IN_BT_SCO] = 1,
96 [CONF_SG_ANTENNA_CONFIGURATION] = 0,
97 [CONF_SG_BEACON_MISS_PERCENT] = 60,
98 [CONF_SG_DHCP_TIME] = 5000,
99 [CONF_SG_RXT] = 1200,
100 [CONF_SG_TXT] = 1000,
101 [CONF_SG_ADAPTIVE_RXT_TXT] = 1,
102 [CONF_SG_GENERAL_USAGE_BIT_MAP] = 3,
103 [CONF_SG_HV3_MAX_SERVED] = 6,
104 [CONF_SG_PS_POLL_TIMEOUT] = 10,
105 [CONF_SG_UPSD_TIMEOUT] = 10,
106 [CONF_SG_CONSECUTIVE_CTS_THRESHOLD] = 2,
107 [CONF_SG_STA_RX_WINDOW_AFTER_DTIM] = 5,
108 [CONF_SG_STA_CONNECTION_PROTECTION_TIME] = 30,
109 /* AP params */
110 [CONF_AP_BEACON_MISS_TX] = 3,
111 [CONF_AP_RX_WINDOW_AFTER_BEACON] = 10,
112 [CONF_AP_BEACON_WINDOW_INTERVAL] = 2,
113 [CONF_AP_CONNECTION_PROTECTION_TIME] = 0,
114 [CONF_AP_BT_ACL_VAL_BT_SERVE_TIME] = 25,
115 [CONF_AP_BT_ACL_VAL_WL_SERVE_TIME] = 25,
116 },
117 .state = CONF_SG_PROTECTIVE,
118 },
119 .rx = {
120 .rx_msdu_life_time = 512000,
121 .packet_detection_threshold = 0,
122 .ps_poll_timeout = 15,
123 .upsd_timeout = 15,
124 .rts_threshold = IEEE80211_MAX_RTS_THRESHOLD,
125 .rx_cca_threshold = 0,
126 .irq_blk_threshold = 0xFFFF,
127 .irq_pkt_threshold = 0,
128 .irq_timeout = 600,
129 .queue_type = CONF_RX_QUEUE_TYPE_LOW_PRIORITY,
130 },
131 .tx = {
132 .tx_energy_detection = 0,
133 .sta_rc_conf = {
134 .enabled_rates = 0,
135 .short_retry_limit = 10,
136 .long_retry_limit = 10,
137 .aflags = 0,
138 },
139 .ac_conf_count = 4,
140 .ac_conf = {
141 [CONF_TX_AC_BE] = {
142 .ac = CONF_TX_AC_BE,
143 .cw_min = 15,
144 .cw_max = 63,
145 .aifsn = 3,
146 .tx_op_limit = 0,
147 },
148 [CONF_TX_AC_BK] = {
149 .ac = CONF_TX_AC_BK,
150 .cw_min = 15,
151 .cw_max = 63,
152 .aifsn = 7,
153 .tx_op_limit = 0,
154 },
155 [CONF_TX_AC_VI] = {
156 .ac = CONF_TX_AC_VI,
157 .cw_min = 15,
158 .cw_max = 63,
159 .aifsn = CONF_TX_AIFS_PIFS,
160 .tx_op_limit = 3008,
161 },
162 [CONF_TX_AC_VO] = {
163 .ac = CONF_TX_AC_VO,
164 .cw_min = 15,
165 .cw_max = 63,
166 .aifsn = CONF_TX_AIFS_PIFS,
167 .tx_op_limit = 1504,
168 },
169 },
170 .max_tx_retries = 100,
171 .ap_aging_period = 300,
172 .tid_conf_count = 4,
173 .tid_conf = {
174 [CONF_TX_AC_BE] = {
175 .queue_id = CONF_TX_AC_BE,
176 .channel_type = CONF_CHANNEL_TYPE_EDCF,
177 .tsid = CONF_TX_AC_BE,
178 .ps_scheme = CONF_PS_SCHEME_LEGACY,
179 .ack_policy = CONF_ACK_POLICY_LEGACY,
180 .apsd_conf = {0, 0},
181 },
182 [CONF_TX_AC_BK] = {
183 .queue_id = CONF_TX_AC_BK,
184 .channel_type = CONF_CHANNEL_TYPE_EDCF,
185 .tsid = CONF_TX_AC_BK,
186 .ps_scheme = CONF_PS_SCHEME_LEGACY,
187 .ack_policy = CONF_ACK_POLICY_LEGACY,
188 .apsd_conf = {0, 0},
189 },
190 [CONF_TX_AC_VI] = {
191 .queue_id = CONF_TX_AC_VI,
192 .channel_type = CONF_CHANNEL_TYPE_EDCF,
193 .tsid = CONF_TX_AC_VI,
194 .ps_scheme = CONF_PS_SCHEME_LEGACY,
195 .ack_policy = CONF_ACK_POLICY_LEGACY,
196 .apsd_conf = {0, 0},
197 },
198 [CONF_TX_AC_VO] = {
199 .queue_id = CONF_TX_AC_VO,
200 .channel_type = CONF_CHANNEL_TYPE_EDCF,
201 .tsid = CONF_TX_AC_VO,
202 .ps_scheme = CONF_PS_SCHEME_LEGACY,
203 .ack_policy = CONF_ACK_POLICY_LEGACY,
204 .apsd_conf = {0, 0},
205 },
206 },
207 .frag_threshold = IEEE80211_MAX_FRAG_THRESHOLD,
208 .tx_compl_timeout = 700,
209 .tx_compl_threshold = 4,
210 .basic_rate = CONF_HW_BIT_RATE_1MBPS,
211 .basic_rate_5 = CONF_HW_BIT_RATE_6MBPS,
212 .tmpl_short_retry_limit = 10,
213 .tmpl_long_retry_limit = 10,
214 },
215 .conn = {
216 .wake_up_event = CONF_WAKE_UP_EVENT_DTIM,
217 .listen_interval = 1,
218 .bcn_filt_mode = CONF_BCN_FILT_MODE_ENABLED,
219 .bcn_filt_ie_count = 2,
220 .bcn_filt_ie = {
221 [0] = {
222 .ie = WLAN_EID_CHANNEL_SWITCH,
223 .rule = CONF_BCN_RULE_PASS_ON_APPEARANCE,
224 },
225 [1] = {
226 .ie = WLAN_EID_HT_INFORMATION,
227 .rule = CONF_BCN_RULE_PASS_ON_CHANGE,
228 },
229 },
230 .synch_fail_thold = 10,
231 .bss_lose_timeout = 100,
232 .beacon_rx_timeout = 10000,
233 .broadcast_timeout = 20000,
234 .rx_broadcast_in_ps = 1,
235 .ps_poll_threshold = 10,
236 .ps_poll_recovery_period = 700,
237 .bet_enable = CONF_BET_MODE_ENABLE,
238 .bet_max_consecutive = 50,
239 .psm_entry_retries = 8,
240 .psm_exit_retries = 16,
241 .psm_entry_nullfunc_retries = 3,
242 .keep_alive_interval = 55000,
243 .max_listen_interval = 20,
244 },
245 .itrim = {
246 .enable = false,
247 .timeout = 50000,
248 },
249 .pm_config = {
250 .host_clk_settling_time = 5000,
251 .host_fast_wakeup_support = false
252 },
253 .roam_trigger = {
254 .trigger_pacing = 1,
255 .avg_weight_rssi_beacon = 20,
256 .avg_weight_rssi_data = 10,
257 .avg_weight_snr_beacon = 20,
258 .avg_weight_snr_data = 10,
259 },
260 .scan = {
261 .min_dwell_time_active = 7500,
262 .max_dwell_time_active = 30000,
263 .min_dwell_time_passive = 100000,
264 .max_dwell_time_passive = 100000,
265 .num_probe_reqs = 2,
266 },
267 .sched_scan = {
268 /* sched_scan requires dwell times in TU instead of TU/1000 */
269 .min_dwell_time_active = 30,
270 .max_dwell_time_active = 60,
271 .dwell_time_passive = 100,
272 .dwell_time_dfs = 150,
273 .num_probe_reqs = 2,
274 .rssi_threshold = -90,
275 .snr_threshold = 0,
276 },
277 .rf = {
278 .tx_per_channel_power_compensation_2 = {
279 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
280 },
281 .tx_per_channel_power_compensation_5 = {
282 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
283 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
284 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
285 },
286 },
287 .ht = {
288 .rx_ba_win_size = 8,
289 .tx_ba_win_size = 64,
290 .inactivity_timeout = 10000,
291 .tx_ba_tid_bitmap = CONF_TX_BA_ENABLED_TID_BITMAP,
292 },
293 .mem_wl127x = {
294 .num_stations = 1,
295 .ssid_profiles = 1,
296 .rx_block_num = 70,
297 .tx_min_block_num = 40,
298 .dynamic_memory = 1,
299 .min_req_tx_blocks = 100,
300 .min_req_rx_blocks = 22,
301 .tx_min = 27,
302 },
303 .mem_wl128x = {
304 .num_stations = 1,
305 .ssid_profiles = 1,
306 .rx_block_num = 40,
307 .tx_min_block_num = 40,
308 .dynamic_memory = 1,
309 .min_req_tx_blocks = 45,
310 .min_req_rx_blocks = 22,
311 .tx_min = 27,
312 },
313 .fm_coex = {
314 .enable = true,
315 .swallow_period = 5,
316 .n_divider_fref_set_1 = 0xff, /* default */
317 .n_divider_fref_set_2 = 12,
318 .m_divider_fref_set_1 = 148,
319 .m_divider_fref_set_2 = 0xffff, /* default */
320 .coex_pll_stabilization_time = 0xffffffff, /* default */
321 .ldo_stabilization_time = 0xffff, /* default */
322 .fm_disturbed_band_margin = 0xff, /* default */
323 .swallow_clk_diff = 0xff, /* default */
324 },
325 .rx_streaming = {
326 .duration = 150,
327 .queues = 0x1,
328 .interval = 20,
329 .always = 0,
330 },
331 .fwlog = {
332 .mode = WL12XX_FWLOG_ON_DEMAND,
333 .mem_blocks = 2,
334 .severity = 0,
335 .timestamp = WL12XX_FWLOG_TIMESTAMP_DISABLED,
336 .output = WL12XX_FWLOG_OUTPUT_HOST,
337 .threshold = 0,
338 },
339 .hci_io_ds = HCI_IO_DS_6MA,
340 .rate = {
341 .rate_retry_score = 32000,
342 .per_add = 8192,
343 .per_th1 = 2048,
344 .per_th2 = 4096,
345 .max_per = 8100,
346 .inverse_curiosity_factor = 5,
347 .tx_fail_low_th = 4,
348 .tx_fail_high_th = 10,
349 .per_alpha_shift = 4,
350 .per_add_shift = 13,
351 .per_beta1_shift = 10,
352 .per_beta2_shift = 8,
353 .rate_check_up = 2,
354 .rate_check_down = 12,
355 .rate_retry_policy = {
356 0x00, 0x00, 0x00, 0x00, 0x00,
357 0x00, 0x00, 0x00, 0x00, 0x00,
358 0x00, 0x00, 0x00,
359 },
360 },
361 .hangover = {
362 .recover_time = 0,
363 .hangover_period = 20,
364 .dynamic_mode = 1,
365 .early_termination_mode = 1,
366 .max_period = 20,
367 .min_period = 1,
368 .increase_delta = 1,
369 .decrease_delta = 2,
370 .quiet_time = 4,
371 .increase_time = 1,
372 .window_size = 16,
373 },
374 };
375
376 static char *fwlog_param;
377 static bool bug_on_recovery;
378
379 static void __wl1271_op_remove_interface(struct wl1271 *wl,
380 bool reset_tx_queues);
381 static void wl1271_free_ap_keys(struct wl1271 *wl);
382
383
384 static void wl1271_device_release(struct device *dev)
385 {
386
387 }
388
389 static struct platform_device wl1271_device = {
390 .name = "wl1271",
391 .id = -1,
392
393 /* device model insists to have a release function */
394 .dev = {
395 .release = wl1271_device_release,
396 },
397 };
398
399 static DEFINE_MUTEX(wl_list_mutex);
400 static LIST_HEAD(wl_list);
401
402 static int wl1271_check_operstate(struct wl1271 *wl, unsigned char operstate)
403 {
404 int ret;
405 if (operstate != IF_OPER_UP)
406 return 0;
407
408 if (test_and_set_bit(WL1271_FLAG_STA_STATE_SENT, &wl->flags))
409 return 0;
410
411 ret = wl12xx_cmd_set_peer_state(wl, wl->sta_hlid);
412 if (ret < 0)
413 return ret;
414
415 wl12xx_croc(wl, wl->role_id);
416
417 wl1271_info("Association completed.");
418 return 0;
419 }
420 static int wl1271_dev_notify(struct notifier_block *me, unsigned long what,
421 void *arg)
422 {
423 struct net_device *dev = arg;
424 struct wireless_dev *wdev;
425 struct wiphy *wiphy;
426 struct ieee80211_hw *hw;
427 struct wl1271 *wl;
428 struct wl1271 *wl_temp;
429 int ret = 0;
430
431 /* Check that this notification is for us. */
432 if (what != NETDEV_CHANGE)
433 return NOTIFY_DONE;
434
435 wdev = dev->ieee80211_ptr;
436 if (wdev == NULL)
437 return NOTIFY_DONE;
438
439 wiphy = wdev->wiphy;
440 if (wiphy == NULL)
441 return NOTIFY_DONE;
442
443 hw = wiphy_priv(wiphy);
444 if (hw == NULL)
445 return NOTIFY_DONE;
446
447 wl_temp = hw->priv;
448 mutex_lock(&wl_list_mutex);
449 list_for_each_entry(wl, &wl_list, list) {
450 if (wl == wl_temp)
451 break;
452 }
453 mutex_unlock(&wl_list_mutex);
454 if (wl != wl_temp)
455 return NOTIFY_DONE;
456
457 mutex_lock(&wl->mutex);
458
459 if (wl->state == WL1271_STATE_OFF)
460 goto out;
461
462 if (!test_bit(WL1271_FLAG_STA_ASSOCIATED, &wl->flags))
463 goto out;
464
465 ret = wl1271_ps_elp_wakeup(wl);
466 if (ret < 0)
467 goto out;
468
469 wl1271_check_operstate(wl, dev->operstate);
470
471 wl1271_ps_elp_sleep(wl);
472
473 out:
474 mutex_unlock(&wl->mutex);
475
476 return NOTIFY_OK;
477 }
478
479 static int wl1271_reg_notify(struct wiphy *wiphy,
480 struct regulatory_request *request)
481 {
482 struct ieee80211_supported_band *band;
483 struct ieee80211_channel *ch;
484 int i;
485
486 band = wiphy->bands[IEEE80211_BAND_5GHZ];
487 for (i = 0; i < band->n_channels; i++) {
488 ch = &band->channels[i];
489 if (ch->flags & IEEE80211_CHAN_DISABLED)
490 continue;
491
492 if (ch->flags & IEEE80211_CHAN_RADAR)
493 ch->flags |= IEEE80211_CHAN_NO_IBSS |
494 IEEE80211_CHAN_PASSIVE_SCAN;
495
496 }
497
498 return 0;
499 }
500
501 static int wl1271_set_rx_streaming(struct wl1271 *wl, bool enable)
502 {
503 int ret = 0;
504
505 /* we should hold wl->mutex */
506 ret = wl1271_acx_ps_rx_streaming(wl, enable);
507 if (ret < 0)
508 goto out;
509
510 if (enable)
511 set_bit(WL1271_FLAG_RX_STREAMING_STARTED, &wl->flags);
512 else
513 clear_bit(WL1271_FLAG_RX_STREAMING_STARTED, &wl->flags);
514 out:
515 return ret;
516 }
517
518 /*
519 * this function is being called when the rx_streaming interval
520 * has beed changed or rx_streaming should be disabled
521 */
522 int wl1271_recalc_rx_streaming(struct wl1271 *wl)
523 {
524 int ret = 0;
525 int period = wl->conf.rx_streaming.interval;
526
527 /* don't reconfigure if rx_streaming is disabled */
528 if (!test_bit(WL1271_FLAG_RX_STREAMING_STARTED, &wl->flags))
529 goto out;
530
531 /* reconfigure/disable according to new streaming_period */
532 if (period &&
533 test_bit(WL1271_FLAG_STA_ASSOCIATED, &wl->flags) &&
534 (wl->conf.rx_streaming.always ||
535 test_bit(WL1271_FLAG_SOFT_GEMINI, &wl->flags)))
536 ret = wl1271_set_rx_streaming(wl, true);
537 else {
538 ret = wl1271_set_rx_streaming(wl, false);
539 /* don't cancel_work_sync since we might deadlock */
540 del_timer_sync(&wl->rx_streaming_timer);
541 }
542 out:
543 return ret;
544 }
545
546 static void wl1271_rx_streaming_enable_work(struct work_struct *work)
547 {
548 int ret;
549 struct wl1271 *wl =
550 container_of(work, struct wl1271, rx_streaming_enable_work);
551
552 mutex_lock(&wl->mutex);
553
554 if (test_bit(WL1271_FLAG_RX_STREAMING_STARTED, &wl->flags) ||
555 !test_bit(WL1271_FLAG_STA_ASSOCIATED, &wl->flags) ||
556 (!wl->conf.rx_streaming.always &&
557 !test_bit(WL1271_FLAG_SOFT_GEMINI, &wl->flags)))
558 goto out;
559
560 if (!wl->conf.rx_streaming.interval)
561 goto out;
562
563 ret = wl1271_ps_elp_wakeup(wl);
564 if (ret < 0)
565 goto out;
566
567 ret = wl1271_set_rx_streaming(wl, true);
568 if (ret < 0)
569 goto out_sleep;
570
571 /* stop it after some time of inactivity */
572 mod_timer(&wl->rx_streaming_timer,
573 jiffies + msecs_to_jiffies(wl->conf.rx_streaming.duration));
574
575 out_sleep:
576 wl1271_ps_elp_sleep(wl);
577 out:
578 mutex_unlock(&wl->mutex);
579 }
580
581 static void wl1271_rx_streaming_disable_work(struct work_struct *work)
582 {
583 int ret;
584 struct wl1271 *wl =
585 container_of(work, struct wl1271, rx_streaming_disable_work);
586
587 mutex_lock(&wl->mutex);
588
589 if (!test_bit(WL1271_FLAG_RX_STREAMING_STARTED, &wl->flags))
590 goto out;
591
592 ret = wl1271_ps_elp_wakeup(wl);
593 if (ret < 0)
594 goto out;
595
596 ret = wl1271_set_rx_streaming(wl, false);
597 if (ret)
598 goto out_sleep;
599
600 out_sleep:
601 wl1271_ps_elp_sleep(wl);
602 out:
603 mutex_unlock(&wl->mutex);
604 }
605
606 static void wl1271_rx_streaming_timer(unsigned long data)
607 {
608 struct wl1271 *wl = (struct wl1271 *)data;
609 ieee80211_queue_work(wl->hw, &wl->rx_streaming_disable_work);
610 }
611
612 static void wl1271_conf_init(struct wl1271 *wl)
613 {
614
615 /*
616 * This function applies the default configuration to the driver. This
617 * function is invoked upon driver load (spi probe.)
618 *
619 * The configuration is stored in a run-time structure in order to
620 * facilitate for run-time adjustment of any of the parameters. Making
621 * changes to the configuration structure will apply the new values on
622 * the next interface up (wl1271_op_start.)
623 */
624
625 /* apply driver default configuration */
626 memcpy(&wl->conf, &default_conf, sizeof(default_conf));
627
628 /* Adjust settings according to optional module parameters */
629 if (fwlog_param) {
630 if (!strcmp(fwlog_param, "continuous")) {
631 wl->conf.fwlog.mode = WL12XX_FWLOG_CONTINUOUS;
632 } else if (!strcmp(fwlog_param, "ondemand")) {
633 wl->conf.fwlog.mode = WL12XX_FWLOG_ON_DEMAND;
634 } else if (!strcmp(fwlog_param, "dbgpins")) {
635 wl->conf.fwlog.mode = WL12XX_FWLOG_CONTINUOUS;
636 wl->conf.fwlog.output = WL12XX_FWLOG_OUTPUT_DBG_PINS;
637 } else if (!strcmp(fwlog_param, "disable")) {
638 wl->conf.fwlog.mem_blocks = 0;
639 wl->conf.fwlog.output = WL12XX_FWLOG_OUTPUT_NONE;
640 } else {
641 wl1271_error("Unknown fwlog parameter %s", fwlog_param);
642 }
643 }
644 }
645
646 static int wl1271_plt_init(struct wl1271 *wl)
647 {
648 struct conf_tx_ac_category *conf_ac;
649 struct conf_tx_tid *conf_tid;
650 int ret, i;
651
652 if (wl->chip.id == CHIP_ID_1283_PG20)
653 ret = wl128x_cmd_general_parms(wl);
654 else
655 ret = wl1271_cmd_general_parms(wl);
656 if (ret < 0)
657 return ret;
658
659 if (wl->chip.id == CHIP_ID_1283_PG20)
660 ret = wl128x_cmd_radio_parms(wl);
661 else
662 ret = wl1271_cmd_radio_parms(wl);
663 if (ret < 0)
664 return ret;
665
666 if (wl->chip.id != CHIP_ID_1283_PG20) {
667 ret = wl1271_cmd_ext_radio_parms(wl);
668 if (ret < 0)
669 return ret;
670 }
671 if (ret < 0)
672 return ret;
673
674 /* Chip-specific initializations */
675 ret = wl1271_chip_specific_init(wl);
676 if (ret < 0)
677 return ret;
678
679 ret = wl1271_sta_init_templates_config(wl);
680 if (ret < 0)
681 return ret;
682
683 ret = wl1271_acx_init_mem_config(wl);
684 if (ret < 0)
685 return ret;
686
687 /* PHY layer config */
688 ret = wl1271_init_phy_config(wl);
689 if (ret < 0)
690 goto out_free_memmap;
691
692 ret = wl1271_acx_dco_itrim_params(wl);
693 if (ret < 0)
694 goto out_free_memmap;
695
696 /* Initialize connection monitoring thresholds */
697 ret = wl1271_acx_conn_monit_params(wl, false);
698 if (ret < 0)
699 goto out_free_memmap;
700
701 /* Bluetooth WLAN coexistence */
702 ret = wl1271_init_pta(wl);
703 if (ret < 0)
704 goto out_free_memmap;
705
706 /* FM WLAN coexistence */
707 ret = wl1271_acx_fm_coex(wl);
708 if (ret < 0)
709 goto out_free_memmap;
710
711 /* Energy detection */
712 ret = wl1271_init_energy_detection(wl);
713 if (ret < 0)
714 goto out_free_memmap;
715
716 ret = wl12xx_acx_mem_cfg(wl);
717 if (ret < 0)
718 goto out_free_memmap;
719
720 /* Default fragmentation threshold */
721 ret = wl1271_acx_frag_threshold(wl, wl->conf.tx.frag_threshold);
722 if (ret < 0)
723 goto out_free_memmap;
724
725 /* Default TID/AC configuration */
726 BUG_ON(wl->conf.tx.tid_conf_count != wl->conf.tx.ac_conf_count);
727 for (i = 0; i < wl->conf.tx.tid_conf_count; i++) {
728 conf_ac = &wl->conf.tx.ac_conf[i];
729 ret = wl1271_acx_ac_cfg(wl, conf_ac->ac, conf_ac->cw_min,
730 conf_ac->cw_max, conf_ac->aifsn,
731 conf_ac->tx_op_limit);
732 if (ret < 0)
733 goto out_free_memmap;
734
735 conf_tid = &wl->conf.tx.tid_conf[i];
736 ret = wl1271_acx_tid_cfg(wl, conf_tid->queue_id,
737 conf_tid->channel_type,
738 conf_tid->tsid,
739 conf_tid->ps_scheme,
740 conf_tid->ack_policy,
741 conf_tid->apsd_conf[0],
742 conf_tid->apsd_conf[1]);
743 if (ret < 0)
744 goto out_free_memmap;
745 }
746
747 /* Enable data path */
748 ret = wl1271_cmd_data_path(wl, 1);
749 if (ret < 0)
750 goto out_free_memmap;
751
752 /* Configure for CAM power saving (ie. always active) */
753 ret = wl1271_acx_sleep_auth(wl, WL1271_PSM_CAM);
754 if (ret < 0)
755 goto out_free_memmap;
756
757 /* configure PM */
758 ret = wl1271_acx_pm_config(wl);
759 if (ret < 0)
760 goto out_free_memmap;
761
762 return 0;
763
764 out_free_memmap:
765 kfree(wl->target_mem_map);
766 wl->target_mem_map = NULL;
767
768 return ret;
769 }
770
771 static void wl12xx_irq_ps_regulate_link(struct wl1271 *wl, u8 hlid, u8 tx_pkts)
772 {
773 bool fw_ps, single_sta;
774
775 /* only regulate station links */
776 if (hlid < WL1271_AP_STA_HLID_START)
777 return;
778
779 fw_ps = test_bit(hlid, (unsigned long *)&wl->ap_fw_ps_map);
780 single_sta = (wl->active_sta_count == 1);
781
782 /*
783 * Wake up from high level PS if the STA is asleep with too little
784 * packets in FW or if the STA is awake.
785 */
786 if (!fw_ps || tx_pkts < WL1271_PS_STA_MAX_PACKETS)
787 wl1271_ps_link_end(wl, hlid);
788
789 /*
790 * Start high-level PS if the STA is asleep with enough blocks in FW.
791 * Make an exception if this is the only connected station. In this
792 * case FW-memory congestion is not a problem.
793 */
794 else if (!single_sta && fw_ps && tx_pkts >= WL1271_PS_STA_MAX_PACKETS)
795 wl1271_ps_link_start(wl, hlid, true);
796 }
797
798 bool wl1271_is_active_sta(struct wl1271 *wl, u8 hlid)
799 {
800 int id;
801
802 /* global/broadcast "stations" are always active */
803 if (hlid < WL1271_AP_STA_HLID_START)
804 return true;
805
806 id = hlid - WL1271_AP_STA_HLID_START;
807 return test_bit(id, wl->ap_hlid_map);
808 }
809
810 static void wl12xx_irq_update_links_status(struct wl1271 *wl,
811 struct wl12xx_fw_status *status)
812 {
813 u32 cur_fw_ps_map;
814 u8 hlid, cnt;
815
816 /* TODO: also use link_fast_bitmap here */
817
818 cur_fw_ps_map = le32_to_cpu(status->link_ps_bitmap);
819 if (wl->ap_fw_ps_map != cur_fw_ps_map) {
820 wl1271_debug(DEBUG_PSM,
821 "link ps prev 0x%x cur 0x%x changed 0x%x",
822 wl->ap_fw_ps_map, cur_fw_ps_map,
823 wl->ap_fw_ps_map ^ cur_fw_ps_map);
824
825 wl->ap_fw_ps_map = cur_fw_ps_map;
826 }
827
828 for (hlid = WL1271_AP_STA_HLID_START; hlid < AP_MAX_LINKS; hlid++) {
829 if (!wl1271_is_active_sta(wl, hlid))
830 continue;
831
832 cnt = status->tx_lnk_free_pkts[hlid] -
833 wl->links[hlid].prev_freed_pkts;
834
835 wl->links[hlid].prev_freed_pkts =
836 status->tx_lnk_free_pkts[hlid];
837 wl->links[hlid].allocated_pkts -= cnt;
838
839 wl12xx_irq_ps_regulate_link(wl, hlid,
840 wl->links[hlid].allocated_pkts);
841 }
842 }
843
844 static void wl12xx_fw_status(struct wl1271 *wl,
845 struct wl12xx_fw_status *status)
846 {
847 struct timespec ts;
848 u32 old_tx_blk_count = wl->tx_blocks_available;
849 int avail, freed_blocks;
850 int i;
851
852 wl1271_raw_read(wl, FW_STATUS_ADDR, status, sizeof(*status), false);
853
854 wl1271_debug(DEBUG_IRQ, "intr: 0x%x (fw_rx_counter = %d, "
855 "drv_rx_counter = %d, tx_results_counter = %d)",
856 status->intr,
857 status->fw_rx_counter,
858 status->drv_rx_counter,
859 status->tx_results_counter);
860
861 for (i = 0; i < NUM_TX_QUEUES; i++) {
862 /* prevent wrap-around in freed-packets counter */
863 wl->tx_allocated_pkts[i] -=
864 (status->tx_released_pkts[i] -
865 wl->tx_pkts_freed[i]) & 0xff;
866
867 wl->tx_pkts_freed[i] = status->tx_released_pkts[i];
868 }
869
870 /* prevent wrap-around in total blocks counter */
871 if (likely(wl->tx_blocks_freed <=
872 le32_to_cpu(status->total_released_blks)))
873 freed_blocks = le32_to_cpu(status->total_released_blks) -
874 wl->tx_blocks_freed;
875 else
876 freed_blocks = 0x100000000LL - wl->tx_blocks_freed +
877 le32_to_cpu(status->total_released_blks);
878
879 wl->tx_blocks_freed = le32_to_cpu(status->total_released_blks);
880
881 wl->tx_allocated_blocks -= freed_blocks;
882
883 avail = le32_to_cpu(status->tx_total) - wl->tx_allocated_blocks;
884
885 /*
886 * The FW might change the total number of TX memblocks before
887 * we get a notification about blocks being released. Thus, the
888 * available blocks calculation might yield a temporary result
889 * which is lower than the actual available blocks. Keeping in
890 * mind that only blocks that were allocated can be moved from
891 * TX to RX, tx_blocks_available should never decrease here.
892 */
893 wl->tx_blocks_available = max((int)wl->tx_blocks_available,
894 avail);
895
896 /* if more blocks are available now, tx work can be scheduled */
897 if (wl->tx_blocks_available > old_tx_blk_count)
898 clear_bit(WL1271_FLAG_FW_TX_BUSY, &wl->flags);
899
900 /* for AP update num of allocated TX blocks per link and ps status */
901 if (wl->bss_type == BSS_TYPE_AP_BSS)
902 wl12xx_irq_update_links_status(wl, status);
903
904 /* update the host-chipset time offset */
905 getnstimeofday(&ts);
906 wl->time_offset = (timespec_to_ns(&ts) >> 10) -
907 (s64)le32_to_cpu(status->fw_localtime);
908 }
909
910 static void wl1271_flush_deferred_work(struct wl1271 *wl)
911 {
912 struct sk_buff *skb;
913
914 /* Pass all received frames to the network stack */
915 while ((skb = skb_dequeue(&wl->deferred_rx_queue)))
916 ieee80211_rx_ni(wl->hw, skb);
917
918 /* Return sent skbs to the network stack */
919 while ((skb = skb_dequeue(&wl->deferred_tx_queue)))
920 ieee80211_tx_status_ni(wl->hw, skb);
921 }
922
923 static void wl1271_netstack_work(struct work_struct *work)
924 {
925 struct wl1271 *wl =
926 container_of(work, struct wl1271, netstack_work);
927
928 do {
929 wl1271_flush_deferred_work(wl);
930 } while (skb_queue_len(&wl->deferred_rx_queue));
931 }
932
933 #define WL1271_IRQ_MAX_LOOPS 256
934
935 irqreturn_t wl1271_irq(int irq, void *cookie)
936 {
937 int ret;
938 u32 intr;
939 int loopcount = WL1271_IRQ_MAX_LOOPS;
940 struct wl1271 *wl = (struct wl1271 *)cookie;
941 bool done = false;
942 unsigned int defer_count;
943 unsigned long flags;
944
945 /* TX might be handled here, avoid redundant work */
946 set_bit(WL1271_FLAG_TX_PENDING, &wl->flags);
947 cancel_work_sync(&wl->tx_work);
948
949 /*
950 * In case edge triggered interrupt must be used, we cannot iterate
951 * more than once without introducing race conditions with the hardirq.
952 */
953 if (wl->platform_quirks & WL12XX_PLATFORM_QUIRK_EDGE_IRQ)
954 loopcount = 1;
955
956 mutex_lock(&wl->mutex);
957
958 wl1271_debug(DEBUG_IRQ, "IRQ work");
959
960 if (unlikely(wl->state == WL1271_STATE_OFF))
961 goto out;
962
963 ret = wl1271_ps_elp_wakeup(wl);
964 if (ret < 0)
965 goto out;
966
967 while (!done && loopcount--) {
968 /*
969 * In order to avoid a race with the hardirq, clear the flag
970 * before acknowledging the chip. Since the mutex is held,
971 * wl1271_ps_elp_wakeup cannot be called concurrently.
972 */
973 clear_bit(WL1271_FLAG_IRQ_RUNNING, &wl->flags);
974 smp_mb__after_clear_bit();
975
976 wl12xx_fw_status(wl, wl->fw_status);
977 intr = le32_to_cpu(wl->fw_status->intr);
978 intr &= WL1271_INTR_MASK;
979 if (!intr) {
980 done = true;
981 continue;
982 }
983
984 if (unlikely(intr & WL1271_ACX_INTR_WATCHDOG)) {
985 wl1271_error("watchdog interrupt received! "
986 "starting recovery.");
987 wl12xx_queue_recovery_work(wl);
988
989 /* restarting the chip. ignore any other interrupt. */
990 goto out;
991 }
992
993 if (likely(intr & WL1271_ACX_INTR_DATA)) {
994 wl1271_debug(DEBUG_IRQ, "WL1271_ACX_INTR_DATA");
995
996 wl12xx_rx(wl, wl->fw_status);
997
998 /* Check if any tx blocks were freed */
999 spin_lock_irqsave(&wl->wl_lock, flags);
1000 if (!test_bit(WL1271_FLAG_FW_TX_BUSY, &wl->flags) &&
1001 wl1271_tx_total_queue_count(wl) > 0) {
1002 spin_unlock_irqrestore(&wl->wl_lock, flags);
1003 /*
1004 * In order to avoid starvation of the TX path,
1005 * call the work function directly.
1006 */
1007 wl1271_tx_work_locked(wl);
1008 } else {
1009 spin_unlock_irqrestore(&wl->wl_lock, flags);
1010 }
1011
1012 /* check for tx results */
1013 if (wl->fw_status->tx_results_counter !=
1014 (wl->tx_results_count & 0xff))
1015 wl1271_tx_complete(wl);
1016
1017 /* Make sure the deferred queues don't get too long */
1018 defer_count = skb_queue_len(&wl->deferred_tx_queue) +
1019 skb_queue_len(&wl->deferred_rx_queue);
1020 if (defer_count > WL1271_DEFERRED_QUEUE_LIMIT)
1021 wl1271_flush_deferred_work(wl);
1022 }
1023
1024 if (intr & WL1271_ACX_INTR_EVENT_A) {
1025 wl1271_debug(DEBUG_IRQ, "WL1271_ACX_INTR_EVENT_A");
1026 wl1271_event_handle(wl, 0);
1027 }
1028
1029 if (intr & WL1271_ACX_INTR_EVENT_B) {
1030 wl1271_debug(DEBUG_IRQ, "WL1271_ACX_INTR_EVENT_B");
1031 wl1271_event_handle(wl, 1);
1032 }
1033
1034 if (intr & WL1271_ACX_INTR_INIT_COMPLETE)
1035 wl1271_debug(DEBUG_IRQ,
1036 "WL1271_ACX_INTR_INIT_COMPLETE");
1037
1038 if (intr & WL1271_ACX_INTR_HW_AVAILABLE)
1039 wl1271_debug(DEBUG_IRQ, "WL1271_ACX_INTR_HW_AVAILABLE");
1040 }
1041
1042 wl1271_ps_elp_sleep(wl);
1043
1044 out:
1045 spin_lock_irqsave(&wl->wl_lock, flags);
1046 /* In case TX was not handled here, queue TX work */
1047 clear_bit(WL1271_FLAG_TX_PENDING, &wl->flags);
1048 if (!test_bit(WL1271_FLAG_FW_TX_BUSY, &wl->flags) &&
1049 wl1271_tx_total_queue_count(wl) > 0)
1050 ieee80211_queue_work(wl->hw, &wl->tx_work);
1051 spin_unlock_irqrestore(&wl->wl_lock, flags);
1052
1053 mutex_unlock(&wl->mutex);
1054
1055 return IRQ_HANDLED;
1056 }
1057 EXPORT_SYMBOL_GPL(wl1271_irq);
1058
1059 static int wl1271_fetch_firmware(struct wl1271 *wl)
1060 {
1061 const struct firmware *fw;
1062 const char *fw_name;
1063 int ret;
1064
1065 if (wl->chip.id == CHIP_ID_1283_PG20)
1066 fw_name = WL128X_FW_NAME;
1067 else
1068 fw_name = WL127X_FW_NAME;
1069
1070 wl1271_debug(DEBUG_BOOT, "booting firmware %s", fw_name);
1071
1072 ret = request_firmware(&fw, fw_name, wl1271_wl_to_dev(wl));
1073
1074 if (ret < 0) {
1075 wl1271_error("could not get firmware: %d", ret);
1076 return ret;
1077 }
1078
1079 if (fw->size % 4) {
1080 wl1271_error("firmware size is not multiple of 32 bits: %zu",
1081 fw->size);
1082 ret = -EILSEQ;
1083 goto out;
1084 }
1085
1086 vfree(wl->fw);
1087 wl->fw_len = fw->size;
1088 wl->fw = vmalloc(wl->fw_len);
1089
1090 if (!wl->fw) {
1091 wl1271_error("could not allocate memory for the firmware");
1092 ret = -ENOMEM;
1093 goto out;
1094 }
1095
1096 memcpy(wl->fw, fw->data, wl->fw_len);
1097 ret = 0;
1098
1099 out:
1100 release_firmware(fw);
1101
1102 return ret;
1103 }
1104
1105 static int wl1271_fetch_nvs(struct wl1271 *wl)
1106 {
1107 const struct firmware *fw;
1108 int ret;
1109
1110 ret = request_firmware(&fw, WL12XX_NVS_NAME, wl1271_wl_to_dev(wl));
1111
1112 if (ret < 0) {
1113 wl1271_error("could not get nvs file: %d", ret);
1114 return ret;
1115 }
1116
1117 wl->nvs = kmemdup(fw->data, fw->size, GFP_KERNEL);
1118
1119 if (!wl->nvs) {
1120 wl1271_error("could not allocate memory for the nvs file");
1121 ret = -ENOMEM;
1122 goto out;
1123 }
1124
1125 wl->nvs_len = fw->size;
1126
1127 out:
1128 release_firmware(fw);
1129
1130 return ret;
1131 }
1132
1133 void wl12xx_queue_recovery_work(struct wl1271 *wl)
1134 {
1135 if (!test_bit(WL1271_FLAG_RECOVERY_IN_PROGRESS, &wl->flags))
1136 ieee80211_queue_work(wl->hw, &wl->recovery_work);
1137 }
1138
1139 size_t wl12xx_copy_fwlog(struct wl1271 *wl, u8 *memblock, size_t maxlen)
1140 {
1141 size_t len = 0;
1142
1143 /* The FW log is a length-value list, find where the log end */
1144 while (len < maxlen) {
1145 if (memblock[len] == 0)
1146 break;
1147 if (len + memblock[len] + 1 > maxlen)
1148 break;
1149 len += memblock[len] + 1;
1150 }
1151
1152 /* Make sure we have enough room */
1153 len = min(len, (size_t)(PAGE_SIZE - wl->fwlog_size));
1154
1155 /* Fill the FW log file, consumed by the sysfs fwlog entry */
1156 memcpy(wl->fwlog + wl->fwlog_size, memblock, len);
1157 wl->fwlog_size += len;
1158
1159 return len;
1160 }
1161
1162 static void wl12xx_read_fwlog_panic(struct wl1271 *wl)
1163 {
1164 u32 addr;
1165 u32 first_addr;
1166 u8 *block;
1167
1168 if ((wl->quirks & WL12XX_QUIRK_FWLOG_NOT_IMPLEMENTED) ||
1169 (wl->conf.fwlog.mode != WL12XX_FWLOG_ON_DEMAND) ||
1170 (wl->conf.fwlog.mem_blocks == 0))
1171 return;
1172
1173 wl1271_info("Reading FW panic log");
1174
1175 block = kmalloc(WL12XX_HW_BLOCK_SIZE, GFP_KERNEL);
1176 if (!block)
1177 return;
1178
1179 /*
1180 * Make sure the chip is awake and the logger isn't active.
1181 * This might fail if the firmware hanged.
1182 */
1183 if (!wl1271_ps_elp_wakeup(wl))
1184 wl12xx_cmd_stop_fwlog(wl);
1185
1186 /* Read the first memory block address */
1187 wl12xx_fw_status(wl, wl->fw_status);
1188 first_addr = le32_to_cpu(wl->fw_status->log_start_addr);
1189 if (!first_addr)
1190 goto out;
1191
1192 /* Traverse the memory blocks linked list */
1193 addr = first_addr;
1194 do {
1195 memset(block, 0, WL12XX_HW_BLOCK_SIZE);
1196 wl1271_read_hwaddr(wl, addr, block, WL12XX_HW_BLOCK_SIZE,
1197 false);
1198
1199 /*
1200 * Memory blocks are linked to one another. The first 4 bytes
1201 * of each memory block hold the hardware address of the next
1202 * one. The last memory block points to the first one.
1203 */
1204 addr = le32_to_cpup((__le32 *)block);
1205 if (!wl12xx_copy_fwlog(wl, block + sizeof(addr),
1206 WL12XX_HW_BLOCK_SIZE - sizeof(addr)))
1207 break;
1208 } while (addr && (addr != first_addr));
1209
1210 wake_up_interruptible(&wl->fwlog_waitq);
1211
1212 out:
1213 kfree(block);
1214 }
1215
1216 static void wl1271_recovery_work(struct work_struct *work)
1217 {
1218 struct wl1271 *wl =
1219 container_of(work, struct wl1271, recovery_work);
1220
1221 mutex_lock(&wl->mutex);
1222
1223 if (wl->state != WL1271_STATE_ON)
1224 goto out;
1225
1226 /* Avoid a recursive recovery */
1227 set_bit(WL1271_FLAG_RECOVERY_IN_PROGRESS, &wl->flags);
1228
1229 wl12xx_read_fwlog_panic(wl);
1230
1231 wl1271_info("Hardware recovery in progress. FW ver: %s pc: 0x%x",
1232 wl->chip.fw_ver_str, wl1271_read32(wl, SCR_PAD4));
1233
1234 BUG_ON(bug_on_recovery);
1235
1236 /*
1237 * Advance security sequence number to overcome potential progress
1238 * in the firmware during recovery. This doens't hurt if the network is
1239 * not encrypted.
1240 */
1241 if (test_bit(WL1271_FLAG_STA_ASSOCIATED, &wl->flags) ||
1242 test_bit(WL1271_FLAG_AP_STARTED, &wl->flags))
1243 wl->tx_security_seq += WL1271_TX_SQN_POST_RECOVERY_PADDING;
1244
1245 /* Prevent spurious TX during FW restart */
1246 ieee80211_stop_queues(wl->hw);
1247
1248 if (wl->sched_scanning) {
1249 ieee80211_sched_scan_stopped(wl->hw);
1250 wl->sched_scanning = false;
1251 }
1252
1253 /* reboot the chipset */
1254 __wl1271_op_remove_interface(wl, false);
1255
1256 clear_bit(WL1271_FLAG_RECOVERY_IN_PROGRESS, &wl->flags);
1257
1258 ieee80211_restart_hw(wl->hw);
1259
1260 /*
1261 * Its safe to enable TX now - the queues are stopped after a request
1262 * to restart the HW.
1263 */
1264 ieee80211_wake_queues(wl->hw);
1265
1266 out:
1267 mutex_unlock(&wl->mutex);
1268 }
1269
1270 static void wl1271_fw_wakeup(struct wl1271 *wl)
1271 {
1272 u32 elp_reg;
1273
1274 elp_reg = ELPCTRL_WAKE_UP;
1275 wl1271_raw_write32(wl, HW_ACCESS_ELP_CTRL_REG_ADDR, elp_reg);
1276 }
1277
1278 static int wl1271_setup(struct wl1271 *wl)
1279 {
1280 wl->fw_status = kmalloc(sizeof(*wl->fw_status), GFP_KERNEL);
1281 if (!wl->fw_status)
1282 return -ENOMEM;
1283
1284 wl->tx_res_if = kmalloc(sizeof(*wl->tx_res_if), GFP_KERNEL);
1285 if (!wl->tx_res_if) {
1286 kfree(wl->fw_status);
1287 return -ENOMEM;
1288 }
1289
1290 return 0;
1291 }
1292
1293 static int wl1271_chip_wakeup(struct wl1271 *wl)
1294 {
1295 struct wl1271_partition_set partition;
1296 int ret = 0;
1297
1298 msleep(WL1271_PRE_POWER_ON_SLEEP);
1299 ret = wl1271_power_on(wl);
1300 if (ret < 0)
1301 goto out;
1302 msleep(WL1271_POWER_ON_SLEEP);
1303 wl1271_io_reset(wl);
1304 wl1271_io_init(wl);
1305
1306 /* We don't need a real memory partition here, because we only want
1307 * to use the registers at this point. */
1308 memset(&partition, 0, sizeof(partition));
1309 partition.reg.start = REGISTERS_BASE;
1310 partition.reg.size = REGISTERS_DOWN_SIZE;
1311 wl1271_set_partition(wl, &partition);
1312
1313 /* ELP module wake up */
1314 wl1271_fw_wakeup(wl);
1315
1316 /* whal_FwCtrl_BootSm() */
1317
1318 /* 0. read chip id from CHIP_ID */
1319 wl->chip.id = wl1271_read32(wl, CHIP_ID_B);
1320
1321 /* 1. check if chip id is valid */
1322
1323 switch (wl->chip.id) {
1324 case CHIP_ID_1271_PG10:
1325 wl1271_warning("chip id 0x%x (1271 PG10) support is obsolete",
1326 wl->chip.id);
1327
1328 ret = wl1271_setup(wl);
1329 if (ret < 0)
1330 goto out;
1331 break;
1332 case CHIP_ID_1271_PG20:
1333 wl1271_debug(DEBUG_BOOT, "chip id 0x%x (1271 PG20)",
1334 wl->chip.id);
1335
1336 /*
1337 * 'end-of-transaction flag' and 'LPD mode flag'
1338 * should be set in wl127x AP mode only
1339 */
1340 if (wl->bss_type == BSS_TYPE_AP_BSS)
1341 wl->quirks |= (WL12XX_QUIRK_END_OF_TRANSACTION |
1342 WL12XX_QUIRK_LPD_MODE);
1343
1344 ret = wl1271_setup(wl);
1345 if (ret < 0)
1346 goto out;
1347 break;
1348 case CHIP_ID_1283_PG20:
1349 wl1271_debug(DEBUG_BOOT, "chip id 0x%x (1283 PG20)",
1350 wl->chip.id);
1351
1352 ret = wl1271_setup(wl);
1353 if (ret < 0)
1354 goto out;
1355
1356 if (wl1271_set_block_size(wl))
1357 wl->quirks |= WL12XX_QUIRK_BLOCKSIZE_ALIGNMENT;
1358 break;
1359 case CHIP_ID_1283_PG10:
1360 default:
1361 wl1271_warning("unsupported chip id: 0x%x", wl->chip.id);
1362 ret = -ENODEV;
1363 goto out;
1364 }
1365
1366 if (wl->fw == NULL) {
1367 ret = wl1271_fetch_firmware(wl);
1368 if (ret < 0)
1369 goto out;
1370 }
1371
1372 /* No NVS from netlink, try to get it from the filesystem */
1373 if (wl->nvs == NULL) {
1374 ret = wl1271_fetch_nvs(wl);
1375 if (ret < 0)
1376 goto out;
1377 }
1378
1379 out:
1380 return ret;
1381 }
1382
1383 int wl1271_plt_start(struct wl1271 *wl)
1384 {
1385 int retries = WL1271_BOOT_RETRIES;
1386 struct wiphy *wiphy = wl->hw->wiphy;
1387 int ret;
1388
1389 mutex_lock(&wl->mutex);
1390
1391 wl1271_notice("power up");
1392
1393 if (wl->state != WL1271_STATE_OFF) {
1394 wl1271_error("cannot go into PLT state because not "
1395 "in off state: %d", wl->state);
1396 ret = -EBUSY;
1397 goto out;
1398 }
1399
1400 wl->bss_type = BSS_TYPE_STA_BSS;
1401
1402 while (retries) {
1403 retries--;
1404 ret = wl1271_chip_wakeup(wl);
1405 if (ret < 0)
1406 goto power_off;
1407
1408 ret = wl1271_boot(wl);
1409 if (ret < 0)
1410 goto power_off;
1411
1412 ret = wl1271_plt_init(wl);
1413 if (ret < 0)
1414 goto irq_disable;
1415
1416 wl->state = WL1271_STATE_PLT;
1417 wl1271_notice("firmware booted in PLT mode (%s)",
1418 wl->chip.fw_ver_str);
1419
1420 /* update hw/fw version info in wiphy struct */
1421 wiphy->hw_version = wl->chip.id;
1422 strncpy(wiphy->fw_version, wl->chip.fw_ver_str,
1423 sizeof(wiphy->fw_version));
1424
1425 goto out;
1426
1427 irq_disable:
1428 mutex_unlock(&wl->mutex);
1429 /* Unlocking the mutex in the middle of handling is
1430 inherently unsafe. In this case we deem it safe to do,
1431 because we need to let any possibly pending IRQ out of
1432 the system (and while we are WL1271_STATE_OFF the IRQ
1433 work function will not do anything.) Also, any other
1434 possible concurrent operations will fail due to the
1435 current state, hence the wl1271 struct should be safe. */
1436 wl1271_disable_interrupts(wl);
1437 wl1271_flush_deferred_work(wl);
1438 cancel_work_sync(&wl->netstack_work);
1439 mutex_lock(&wl->mutex);
1440 power_off:
1441 wl1271_power_off(wl);
1442 }
1443
1444 wl1271_error("firmware boot in PLT mode failed despite %d retries",
1445 WL1271_BOOT_RETRIES);
1446 out:
1447 mutex_unlock(&wl->mutex);
1448
1449 return ret;
1450 }
1451
1452 static int __wl1271_plt_stop(struct wl1271 *wl)
1453 {
1454 int ret = 0;
1455
1456 wl1271_notice("power down");
1457
1458 if (wl->state != WL1271_STATE_PLT) {
1459 wl1271_error("cannot power down because not in PLT "
1460 "state: %d", wl->state);
1461 ret = -EBUSY;
1462 goto out;
1463 }
1464
1465 wl1271_power_off(wl);
1466
1467 wl->state = WL1271_STATE_OFF;
1468 wl->rx_counter = 0;
1469
1470 mutex_unlock(&wl->mutex);
1471 wl1271_disable_interrupts(wl);
1472 wl1271_flush_deferred_work(wl);
1473 cancel_work_sync(&wl->netstack_work);
1474 cancel_work_sync(&wl->recovery_work);
1475 mutex_lock(&wl->mutex);
1476 out:
1477 return ret;
1478 }
1479
1480 int wl1271_plt_stop(struct wl1271 *wl)
1481 {
1482 int ret;
1483
1484 mutex_lock(&wl->mutex);
1485 ret = __wl1271_plt_stop(wl);
1486 mutex_unlock(&wl->mutex);
1487 return ret;
1488 }
1489
1490 static void wl1271_op_tx(struct ieee80211_hw *hw, struct sk_buff *skb)
1491 {
1492 struct wl1271 *wl = hw->priv;
1493 unsigned long flags;
1494 int q, mapping;
1495 u8 hlid = 0;
1496
1497 mapping = skb_get_queue_mapping(skb);
1498 q = wl1271_tx_get_queue(mapping);
1499
1500 if (wl->bss_type == BSS_TYPE_AP_BSS)
1501 hlid = wl12xx_tx_get_hlid_ap(wl, skb);
1502
1503 spin_lock_irqsave(&wl->wl_lock, flags);
1504
1505 /* queue the packet */
1506 if (wl->bss_type == BSS_TYPE_AP_BSS) {
1507 if (!wl1271_is_active_sta(wl, hlid)) {
1508 wl1271_debug(DEBUG_TX, "DROP skb hlid %d q %d",
1509 hlid, q);
1510 dev_kfree_skb(skb);
1511 goto out;
1512 }
1513
1514 wl1271_debug(DEBUG_TX, "queue skb hlid %d q %d", hlid, q);
1515 skb_queue_tail(&wl->links[hlid].tx_queue[q], skb);
1516 } else {
1517 skb_queue_tail(&wl->tx_queue[q], skb);
1518 }
1519
1520 wl->tx_queue_count[q]++;
1521
1522 /*
1523 * The workqueue is slow to process the tx_queue and we need stop
1524 * the queue here, otherwise the queue will get too long.
1525 */
1526 if (wl->tx_queue_count[q] >= WL1271_TX_QUEUE_HIGH_WATERMARK) {
1527 wl1271_debug(DEBUG_TX, "op_tx: stopping queues for q %d", q);
1528 ieee80211_stop_queue(wl->hw, mapping);
1529 set_bit(q, &wl->stopped_queues_map);
1530 }
1531
1532 /*
1533 * The chip specific setup must run before the first TX packet -
1534 * before that, the tx_work will not be initialized!
1535 */
1536
1537 if (!test_bit(WL1271_FLAG_FW_TX_BUSY, &wl->flags) &&
1538 !test_bit(WL1271_FLAG_TX_PENDING, &wl->flags))
1539 ieee80211_queue_work(wl->hw, &wl->tx_work);
1540
1541 out:
1542 spin_unlock_irqrestore(&wl->wl_lock, flags);
1543 }
1544
1545 int wl1271_tx_dummy_packet(struct wl1271 *wl)
1546 {
1547 unsigned long flags;
1548 int q;
1549
1550 /* no need to queue a new dummy packet if one is already pending */
1551 if (test_bit(WL1271_FLAG_DUMMY_PACKET_PENDING, &wl->flags))
1552 return 0;
1553
1554 q = wl1271_tx_get_queue(skb_get_queue_mapping(wl->dummy_packet));
1555
1556 spin_lock_irqsave(&wl->wl_lock, flags);
1557 set_bit(WL1271_FLAG_DUMMY_PACKET_PENDING, &wl->flags);
1558 wl->tx_queue_count[q]++;
1559 spin_unlock_irqrestore(&wl->wl_lock, flags);
1560
1561 /* The FW is low on RX memory blocks, so send the dummy packet asap */
1562 if (!test_bit(WL1271_FLAG_FW_TX_BUSY, &wl->flags))
1563 wl1271_tx_work_locked(wl);
1564
1565 /*
1566 * If the FW TX is busy, TX work will be scheduled by the threaded
1567 * interrupt handler function
1568 */
1569 return 0;
1570 }
1571
1572 /*
1573 * The size of the dummy packet should be at least 1400 bytes. However, in
1574 * order to minimize the number of bus transactions, aligning it to 512 bytes
1575 * boundaries could be beneficial, performance wise
1576 */
1577 #define TOTAL_TX_DUMMY_PACKET_SIZE (ALIGN(1400, 512))
1578
1579 static struct sk_buff *wl12xx_alloc_dummy_packet(struct wl1271 *wl)
1580 {
1581 struct sk_buff *skb;
1582 struct ieee80211_hdr_3addr *hdr;
1583 unsigned int dummy_packet_size;
1584
1585 dummy_packet_size = TOTAL_TX_DUMMY_PACKET_SIZE -
1586 sizeof(struct wl1271_tx_hw_descr) - sizeof(*hdr);
1587
1588 skb = dev_alloc_skb(TOTAL_TX_DUMMY_PACKET_SIZE);
1589 if (!skb) {
1590 wl1271_warning("Failed to allocate a dummy packet skb");
1591 return NULL;
1592 }
1593
1594 skb_reserve(skb, sizeof(struct wl1271_tx_hw_descr));
1595
1596 hdr = (struct ieee80211_hdr_3addr *) skb_put(skb, sizeof(*hdr));
1597 memset(hdr, 0, sizeof(*hdr));
1598 hdr->frame_control = cpu_to_le16(IEEE80211_FTYPE_DATA |
1599 IEEE80211_STYPE_NULLFUNC |
1600 IEEE80211_FCTL_TODS);
1601
1602 memset(skb_put(skb, dummy_packet_size), 0, dummy_packet_size);
1603
1604 /* Dummy packets require the TID to be management */
1605 skb->priority = WL1271_TID_MGMT;
1606
1607 /* Initialize all fields that might be used */
1608 skb_set_queue_mapping(skb, 0);
1609 memset(IEEE80211_SKB_CB(skb), 0, sizeof(struct ieee80211_tx_info));
1610
1611 return skb;
1612 }
1613
1614
1615 static struct notifier_block wl1271_dev_notifier = {
1616 .notifier_call = wl1271_dev_notify,
1617 };
1618
1619 #ifdef CONFIG_PM
1620 static int wl1271_configure_suspend_sta(struct wl1271 *wl)
1621 {
1622 int ret = 0;
1623
1624 mutex_lock(&wl->mutex);
1625
1626 if (!test_bit(WL1271_FLAG_STA_ASSOCIATED, &wl->flags))
1627 goto out_unlock;
1628
1629 ret = wl1271_ps_elp_wakeup(wl);
1630 if (ret < 0)
1631 goto out_unlock;
1632
1633 /* enter psm if needed*/
1634 if (!test_bit(WL1271_FLAG_PSM, &wl->flags)) {
1635 DECLARE_COMPLETION_ONSTACK(compl);
1636
1637 wl->ps_compl = &compl;
1638 ret = wl1271_ps_set_mode(wl, STATION_POWER_SAVE_MODE,
1639 wl->basic_rate, true);
1640 if (ret < 0)
1641 goto out_sleep;
1642
1643 /* we must unlock here so we will be able to get events */
1644 wl1271_ps_elp_sleep(wl);
1645 mutex_unlock(&wl->mutex);
1646
1647 ret = wait_for_completion_timeout(
1648 &compl, msecs_to_jiffies(WL1271_PS_COMPLETE_TIMEOUT));
1649 if (ret <= 0) {
1650 wl1271_warning("couldn't enter ps mode!");
1651 ret = -EBUSY;
1652 goto out;
1653 }
1654
1655 /* take mutex again, and wakeup */
1656 mutex_lock(&wl->mutex);
1657
1658 ret = wl1271_ps_elp_wakeup(wl);
1659 if (ret < 0)
1660 goto out_unlock;
1661 }
1662 out_sleep:
1663 wl1271_ps_elp_sleep(wl);
1664 out_unlock:
1665 mutex_unlock(&wl->mutex);
1666 out:
1667 return ret;
1668
1669 }
1670
1671 static int wl1271_configure_suspend_ap(struct wl1271 *wl)
1672 {
1673 int ret = 0;
1674
1675 mutex_lock(&wl->mutex);
1676
1677 if (!test_bit(WL1271_FLAG_AP_STARTED, &wl->flags))
1678 goto out_unlock;
1679
1680 ret = wl1271_ps_elp_wakeup(wl);
1681 if (ret < 0)
1682 goto out_unlock;
1683
1684 ret = wl1271_acx_beacon_filter_opt(wl, true);
1685
1686 wl1271_ps_elp_sleep(wl);
1687 out_unlock:
1688 mutex_unlock(&wl->mutex);
1689 return ret;
1690
1691 }
1692
1693 static int wl1271_configure_suspend(struct wl1271 *wl)
1694 {
1695 if (wl->bss_type == BSS_TYPE_STA_BSS)
1696 return wl1271_configure_suspend_sta(wl);
1697 if (wl->bss_type == BSS_TYPE_AP_BSS)
1698 return wl1271_configure_suspend_ap(wl);
1699 return 0;
1700 }
1701
1702 static void wl1271_configure_resume(struct wl1271 *wl)
1703 {
1704 int ret;
1705 bool is_sta = wl->bss_type == BSS_TYPE_STA_BSS;
1706 bool is_ap = wl->bss_type == BSS_TYPE_AP_BSS;
1707
1708 if (!is_sta && !is_ap)
1709 return;
1710
1711 mutex_lock(&wl->mutex);
1712 ret = wl1271_ps_elp_wakeup(wl);
1713 if (ret < 0)
1714 goto out;
1715
1716 if (is_sta) {
1717 /* exit psm if it wasn't configured */
1718 if (!test_bit(WL1271_FLAG_PSM_REQUESTED, &wl->flags))
1719 wl1271_ps_set_mode(wl, STATION_ACTIVE_MODE,
1720 wl->basic_rate, true);
1721 } else if (is_ap) {
1722 wl1271_acx_beacon_filter_opt(wl, false);
1723 }
1724
1725 wl1271_ps_elp_sleep(wl);
1726 out:
1727 mutex_unlock(&wl->mutex);
1728 }
1729
1730 static int wl1271_op_suspend(struct ieee80211_hw *hw,
1731 struct cfg80211_wowlan *wow)
1732 {
1733 struct wl1271 *wl = hw->priv;
1734 int ret;
1735
1736 wl1271_debug(DEBUG_MAC80211, "mac80211 suspend wow=%d", !!wow);
1737 WARN_ON(!wow || !wow->any);
1738
1739 wl->wow_enabled = true;
1740 ret = wl1271_configure_suspend(wl);
1741 if (ret < 0) {
1742 wl1271_warning("couldn't prepare device to suspend");
1743 return ret;
1744 }
1745 /* flush any remaining work */
1746 wl1271_debug(DEBUG_MAC80211, "flushing remaining works");
1747
1748 /*
1749 * disable and re-enable interrupts in order to flush
1750 * the threaded_irq
1751 */
1752 wl1271_disable_interrupts(wl);
1753
1754 /*
1755 * set suspended flag to avoid triggering a new threaded_irq
1756 * work. no need for spinlock as interrupts are disabled.
1757 */
1758 set_bit(WL1271_FLAG_SUSPENDED, &wl->flags);
1759
1760 wl1271_enable_interrupts(wl);
1761 flush_work(&wl->tx_work);
1762 flush_delayed_work(&wl->pspoll_work);
1763 flush_delayed_work(&wl->elp_work);
1764
1765 return 0;
1766 }
1767
1768 static int wl1271_op_resume(struct ieee80211_hw *hw)
1769 {
1770 struct wl1271 *wl = hw->priv;
1771 unsigned long flags;
1772 bool run_irq_work = false;
1773
1774 wl1271_debug(DEBUG_MAC80211, "mac80211 resume wow=%d",
1775 wl->wow_enabled);
1776 WARN_ON(!wl->wow_enabled);
1777
1778 /*
1779 * re-enable irq_work enqueuing, and call irq_work directly if
1780 * there is a pending work.
1781 */
1782 spin_lock_irqsave(&wl->wl_lock, flags);
1783 clear_bit(WL1271_FLAG_SUSPENDED, &wl->flags);
1784 if (test_and_clear_bit(WL1271_FLAG_PENDING_WORK, &wl->flags))
1785 run_irq_work = true;
1786 spin_unlock_irqrestore(&wl->wl_lock, flags);
1787
1788 if (run_irq_work) {
1789 wl1271_debug(DEBUG_MAC80211,
1790 "run postponed irq_work directly");
1791 wl1271_irq(0, wl);
1792 wl1271_enable_interrupts(wl);
1793 }
1794 wl1271_configure_resume(wl);
1795 wl->wow_enabled = false;
1796
1797 return 0;
1798 }
1799 #endif
1800
1801 static int wl1271_op_start(struct ieee80211_hw *hw)
1802 {
1803 wl1271_debug(DEBUG_MAC80211, "mac80211 start");
1804
1805 /*
1806 * We have to delay the booting of the hardware because
1807 * we need to know the local MAC address before downloading and
1808 * initializing the firmware. The MAC address cannot be changed
1809 * after boot, and without the proper MAC address, the firmware
1810 * will not function properly.
1811 *
1812 * The MAC address is first known when the corresponding interface
1813 * is added. That is where we will initialize the hardware.
1814 */
1815
1816 return 0;
1817 }
1818
1819 static void wl1271_op_stop(struct ieee80211_hw *hw)
1820 {
1821 wl1271_debug(DEBUG_MAC80211, "mac80211 stop");
1822 }
1823
1824 static u8 wl12xx_get_role_type(struct wl1271 *wl)
1825 {
1826 switch (wl->bss_type) {
1827 case BSS_TYPE_AP_BSS:
1828 if (wl->p2p)
1829 return WL1271_ROLE_P2P_GO;
1830 else
1831 return WL1271_ROLE_AP;
1832
1833 case BSS_TYPE_STA_BSS:
1834 if (wl->p2p)
1835 return WL1271_ROLE_P2P_CL;
1836 else
1837 return WL1271_ROLE_STA;
1838
1839 case BSS_TYPE_IBSS:
1840 return WL1271_ROLE_IBSS;
1841
1842 default:
1843 wl1271_error("invalid bss_type: %d", wl->bss_type);
1844 }
1845 return WL12XX_INVALID_ROLE_TYPE;
1846 }
1847
1848 static int wl1271_op_add_interface(struct ieee80211_hw *hw,
1849 struct ieee80211_vif *vif)
1850 {
1851 struct wl1271 *wl = hw->priv;
1852 struct wiphy *wiphy = hw->wiphy;
1853 int retries = WL1271_BOOT_RETRIES;
1854 int ret = 0;
1855 u8 role_type;
1856 bool booted = false;
1857
1858 wl1271_debug(DEBUG_MAC80211, "mac80211 add interface type %d mac %pM",
1859 ieee80211_vif_type_p2p(vif), vif->addr);
1860
1861 mutex_lock(&wl->mutex);
1862 if (wl->vif) {
1863 wl1271_debug(DEBUG_MAC80211,
1864 "multiple vifs are not supported yet");
1865 ret = -EBUSY;
1866 goto out;
1867 }
1868
1869 /*
1870 * in some very corner case HW recovery scenarios its possible to
1871 * get here before __wl1271_op_remove_interface is complete, so
1872 * opt out if that is the case.
1873 */
1874 if (test_bit(WL1271_FLAG_IF_INITIALIZED, &wl->flags)) {
1875 ret = -EBUSY;
1876 goto out;
1877 }
1878
1879 switch (ieee80211_vif_type_p2p(vif)) {
1880 case NL80211_IFTYPE_P2P_CLIENT:
1881 wl->p2p = 1;
1882 /* fall-through */
1883 case NL80211_IFTYPE_STATION:
1884 wl->bss_type = BSS_TYPE_STA_BSS;
1885 wl->set_bss_type = BSS_TYPE_STA_BSS;
1886 break;
1887 case NL80211_IFTYPE_ADHOC:
1888 wl->bss_type = BSS_TYPE_IBSS;
1889 wl->set_bss_type = BSS_TYPE_STA_BSS;
1890 break;
1891 case NL80211_IFTYPE_P2P_GO:
1892 wl->p2p = 1;
1893 /* fall-through */
1894 case NL80211_IFTYPE_AP:
1895 wl->bss_type = BSS_TYPE_AP_BSS;
1896 break;
1897 default:
1898 ret = -EOPNOTSUPP;
1899 goto out;
1900 }
1901
1902 role_type = wl12xx_get_role_type(wl);
1903 if (role_type == WL12XX_INVALID_ROLE_TYPE) {
1904 ret = -EINVAL;
1905 goto out;
1906 }
1907 memcpy(wl->mac_addr, vif->addr, ETH_ALEN);
1908
1909 if (wl->state != WL1271_STATE_OFF) {
1910 wl1271_error("cannot start because not in off state: %d",
1911 wl->state);
1912 ret = -EBUSY;
1913 goto out;
1914 }
1915
1916 while (retries) {
1917 retries--;
1918 ret = wl1271_chip_wakeup(wl);
1919 if (ret < 0)
1920 goto power_off;
1921
1922 ret = wl1271_boot(wl);
1923 if (ret < 0)
1924 goto power_off;
1925
1926 if (wl->bss_type == BSS_TYPE_STA_BSS ||
1927 wl->bss_type == BSS_TYPE_IBSS) {
1928 /*
1929 * The device role is a special role used for
1930 * rx and tx frames prior to association (as
1931 * the STA role can get packets only from
1932 * its associated bssid)
1933 */
1934 ret = wl12xx_cmd_role_enable(wl,
1935 WL1271_ROLE_DEVICE,
1936 &wl->dev_role_id);
1937 if (ret < 0)
1938 goto irq_disable;
1939 }
1940
1941 ret = wl12xx_cmd_role_enable(wl, role_type, &wl->role_id);
1942 if (ret < 0)
1943 goto irq_disable;
1944
1945 ret = wl1271_hw_init(wl);
1946 if (ret < 0)
1947 goto irq_disable;
1948
1949 booted = true;
1950 break;
1951
1952 irq_disable:
1953 mutex_unlock(&wl->mutex);
1954 /* Unlocking the mutex in the middle of handling is
1955 inherently unsafe. In this case we deem it safe to do,
1956 because we need to let any possibly pending IRQ out of
1957 the system (and while we are WL1271_STATE_OFF the IRQ
1958 work function will not do anything.) Also, any other
1959 possible concurrent operations will fail due to the
1960 current state, hence the wl1271 struct should be safe. */
1961 wl1271_disable_interrupts(wl);
1962 wl1271_flush_deferred_work(wl);
1963 cancel_work_sync(&wl->netstack_work);
1964 mutex_lock(&wl->mutex);
1965 power_off:
1966 wl1271_power_off(wl);
1967 }
1968
1969 if (!booted) {
1970 wl1271_error("firmware boot failed despite %d retries",
1971 WL1271_BOOT_RETRIES);
1972 goto out;
1973 }
1974
1975 wl->vif = vif;
1976 wl->state = WL1271_STATE_ON;
1977 set_bit(WL1271_FLAG_IF_INITIALIZED, &wl->flags);
1978 wl1271_info("firmware booted (%s)", wl->chip.fw_ver_str);
1979
1980 /* update hw/fw version info in wiphy struct */
1981 wiphy->hw_version = wl->chip.id;
1982 strncpy(wiphy->fw_version, wl->chip.fw_ver_str,
1983 sizeof(wiphy->fw_version));
1984
1985 /*
1986 * Now we know if 11a is supported (info from the NVS), so disable
1987 * 11a channels if not supported
1988 */
1989 if (!wl->enable_11a)
1990 wiphy->bands[IEEE80211_BAND_5GHZ]->n_channels = 0;
1991
1992 wl1271_debug(DEBUG_MAC80211, "11a is %ssupported",
1993 wl->enable_11a ? "" : "not ");
1994
1995 out:
1996 mutex_unlock(&wl->mutex);
1997
1998 mutex_lock(&wl_list_mutex);
1999 if (!ret)
2000 list_add(&wl->list, &wl_list);
2001 mutex_unlock(&wl_list_mutex);
2002
2003 return ret;
2004 }
2005
2006 static void __wl1271_op_remove_interface(struct wl1271 *wl,
2007 bool reset_tx_queues)
2008 {
2009 int ret, i;
2010
2011 wl1271_debug(DEBUG_MAC80211, "mac80211 remove interface");
2012
2013 /* because of hardware recovery, we may get here twice */
2014 if (wl->state != WL1271_STATE_ON)
2015 return;
2016
2017 wl1271_info("down");
2018
2019 mutex_lock(&wl_list_mutex);
2020 list_del(&wl->list);
2021 mutex_unlock(&wl_list_mutex);
2022
2023 /* enable dyn ps just in case (if left on due to fw crash etc) */
2024 if (wl->bss_type == BSS_TYPE_STA_BSS)
2025 ieee80211_enable_dyn_ps(wl->vif);
2026
2027 if (wl->scan.state != WL1271_SCAN_STATE_IDLE) {
2028 wl->scan.state = WL1271_SCAN_STATE_IDLE;
2029 memset(wl->scan.scanned_ch, 0, sizeof(wl->scan.scanned_ch));
2030 wl->scan.req = NULL;
2031 ieee80211_scan_completed(wl->hw, true);
2032 }
2033
2034 if (!test_bit(WL1271_FLAG_RECOVERY_IN_PROGRESS, &wl->flags)) {
2035 /* disable active roles */
2036 ret = wl1271_ps_elp_wakeup(wl);
2037 if (ret < 0)
2038 goto deinit;
2039
2040 if (wl->bss_type == BSS_TYPE_STA_BSS) {
2041 ret = wl12xx_cmd_role_disable(wl, &wl->dev_role_id);
2042 if (ret < 0)
2043 goto deinit;
2044 }
2045
2046 ret = wl12xx_cmd_role_disable(wl, &wl->role_id);
2047 if (ret < 0)
2048 goto deinit;
2049
2050 wl1271_ps_elp_sleep(wl);
2051 }
2052 deinit:
2053 /* clear all hlids (except system_hlid) */
2054 wl->sta_hlid = WL12XX_INVALID_LINK_ID;
2055 wl->dev_hlid = WL12XX_INVALID_LINK_ID;
2056 wl->ap_bcast_hlid = WL12XX_INVALID_LINK_ID;
2057 wl->ap_global_hlid = WL12XX_INVALID_LINK_ID;
2058
2059 /*
2060 * this must be before the cancel_work calls below, so that the work
2061 * functions don't perform further work.
2062 */
2063 wl->state = WL1271_STATE_OFF;
2064
2065 mutex_unlock(&wl->mutex);
2066
2067 wl1271_disable_interrupts(wl);
2068 wl1271_flush_deferred_work(wl);
2069 cancel_delayed_work_sync(&wl->scan_complete_work);
2070 cancel_work_sync(&wl->netstack_work);
2071 cancel_work_sync(&wl->tx_work);
2072 del_timer_sync(&wl->rx_streaming_timer);
2073 cancel_work_sync(&wl->rx_streaming_enable_work);
2074 cancel_work_sync(&wl->rx_streaming_disable_work);
2075 cancel_delayed_work_sync(&wl->pspoll_work);
2076 cancel_delayed_work_sync(&wl->elp_work);
2077
2078 mutex_lock(&wl->mutex);
2079
2080 /* let's notify MAC80211 about the remaining pending TX frames */
2081 wl1271_tx_reset(wl, reset_tx_queues);
2082 wl1271_power_off(wl);
2083
2084 memset(wl->bssid, 0, ETH_ALEN);
2085 memset(wl->ssid, 0, IEEE80211_MAX_SSID_LEN + 1);
2086 wl->ssid_len = 0;
2087 wl->bss_type = MAX_BSS_TYPE;
2088 wl->set_bss_type = MAX_BSS_TYPE;
2089 wl->p2p = 0;
2090 wl->band = IEEE80211_BAND_2GHZ;
2091
2092 wl->rx_counter = 0;
2093 wl->psm_entry_retry = 0;
2094 wl->power_level = WL1271_DEFAULT_POWER_LEVEL;
2095 wl->tx_blocks_available = 0;
2096 wl->tx_allocated_blocks = 0;
2097 wl->tx_results_count = 0;
2098 wl->tx_packets_count = 0;
2099 wl->time_offset = 0;
2100 wl->session_counter = 0;
2101 wl->rate_set = CONF_TX_RATE_MASK_BASIC;
2102 wl->bitrate_masks[IEEE80211_BAND_2GHZ] = wl->conf.tx.basic_rate;
2103 wl->bitrate_masks[IEEE80211_BAND_5GHZ] = wl->conf.tx.basic_rate_5;
2104 wl->vif = NULL;
2105 wl->tx_spare_blocks = TX_HW_BLOCK_SPARE_DEFAULT;
2106 wl1271_free_ap_keys(wl);
2107 memset(wl->ap_hlid_map, 0, sizeof(wl->ap_hlid_map));
2108 wl->ap_fw_ps_map = 0;
2109 wl->ap_ps_map = 0;
2110 wl->sched_scanning = false;
2111 wl->role_id = WL12XX_INVALID_ROLE_ID;
2112 wl->dev_role_id = WL12XX_INVALID_ROLE_ID;
2113 memset(wl->roles_map, 0, sizeof(wl->roles_map));
2114 memset(wl->links_map, 0, sizeof(wl->links_map));
2115 memset(wl->roc_map, 0, sizeof(wl->roc_map));
2116 wl->active_sta_count = 0;
2117
2118 /* The system link is always allocated */
2119 __set_bit(WL12XX_SYSTEM_HLID, wl->links_map);
2120
2121 /*
2122 * this is performed after the cancel_work calls and the associated
2123 * mutex_lock, so that wl1271_op_add_interface does not accidentally
2124 * get executed before all these vars have been reset.
2125 */
2126 wl->flags = 0;
2127
2128 wl->tx_blocks_freed = 0;
2129
2130 for (i = 0; i < NUM_TX_QUEUES; i++) {
2131 wl->tx_pkts_freed[i] = 0;
2132 wl->tx_allocated_pkts[i] = 0;
2133 }
2134
2135 wl1271_debugfs_reset(wl);
2136
2137 kfree(wl->fw_status);
2138 wl->fw_status = NULL;
2139 kfree(wl->tx_res_if);
2140 wl->tx_res_if = NULL;
2141 kfree(wl->target_mem_map);
2142 wl->target_mem_map = NULL;
2143 }
2144
2145 static void wl1271_op_remove_interface(struct ieee80211_hw *hw,
2146 struct ieee80211_vif *vif)
2147 {
2148 struct wl1271 *wl = hw->priv;
2149
2150 mutex_lock(&wl->mutex);
2151 /*
2152 * wl->vif can be null here if someone shuts down the interface
2153 * just when hardware recovery has been started.
2154 */
2155 if (wl->vif) {
2156 WARN_ON(wl->vif != vif);
2157 __wl1271_op_remove_interface(wl, true);
2158 }
2159
2160 mutex_unlock(&wl->mutex);
2161 cancel_work_sync(&wl->recovery_work);
2162 }
2163
2164 static int wl1271_join(struct wl1271 *wl, bool set_assoc)
2165 {
2166 int ret;
2167 bool is_ibss = (wl->bss_type == BSS_TYPE_IBSS);
2168
2169 /*
2170 * One of the side effects of the JOIN command is that is clears
2171 * WPA/WPA2 keys from the chipset. Performing a JOIN while associated
2172 * to a WPA/WPA2 access point will therefore kill the data-path.
2173 * Currently the only valid scenario for JOIN during association
2174 * is on roaming, in which case we will also be given new keys.
2175 * Keep the below message for now, unless it starts bothering
2176 * users who really like to roam a lot :)
2177 */
2178 if (test_bit(WL1271_FLAG_STA_ASSOCIATED, &wl->flags))
2179 wl1271_info("JOIN while associated.");
2180
2181 if (set_assoc)
2182 set_bit(WL1271_FLAG_STA_ASSOCIATED, &wl->flags);
2183
2184 if (is_ibss)
2185 ret = wl12xx_cmd_role_start_ibss(wl);
2186 else
2187 ret = wl12xx_cmd_role_start_sta(wl);
2188 if (ret < 0)
2189 goto out;
2190
2191 if (!test_bit(WL1271_FLAG_STA_ASSOCIATED, &wl->flags))
2192 goto out;
2193
2194 /*
2195 * The join command disable the keep-alive mode, shut down its process,
2196 * and also clear the template config, so we need to reset it all after
2197 * the join. The acx_aid starts the keep-alive process, and the order
2198 * of the commands below is relevant.
2199 */
2200 ret = wl1271_acx_keep_alive_mode(wl, true);
2201 if (ret < 0)
2202 goto out;
2203
2204 ret = wl1271_acx_aid(wl, wl->aid);
2205 if (ret < 0)
2206 goto out;
2207
2208 ret = wl1271_cmd_build_klv_null_data(wl);
2209 if (ret < 0)
2210 goto out;
2211
2212 ret = wl1271_acx_keep_alive_config(wl, CMD_TEMPL_KLV_IDX_NULL_DATA,
2213 ACX_KEEP_ALIVE_TPL_VALID);
2214 if (ret < 0)
2215 goto out;
2216
2217 out:
2218 return ret;
2219 }
2220
2221 static int wl1271_unjoin(struct wl1271 *wl)
2222 {
2223 int ret;
2224
2225 /* to stop listening to a channel, we disconnect */
2226 ret = wl12xx_cmd_role_stop_sta(wl);
2227 if (ret < 0)
2228 goto out;
2229
2230 memset(wl->bssid, 0, ETH_ALEN);
2231
2232 /* reset TX security counters on a clean disconnect */
2233 wl->tx_security_last_seq_lsb = 0;
2234 wl->tx_security_seq = 0;
2235
2236 out:
2237 return ret;
2238 }
2239
2240 static void wl1271_set_band_rate(struct wl1271 *wl)
2241 {
2242 wl->basic_rate_set = wl->bitrate_masks[wl->band];
2243 wl->rate_set = wl->basic_rate_set;
2244 }
2245
2246 static bool wl12xx_is_roc(struct wl1271 *wl)
2247 {
2248 u8 role_id;
2249
2250 role_id = find_first_bit(wl->roc_map, WL12XX_MAX_ROLES);
2251 if (role_id >= WL12XX_MAX_ROLES)
2252 return false;
2253
2254 return true;
2255 }
2256
2257 static int wl1271_sta_handle_idle(struct wl1271 *wl, bool idle)
2258 {
2259 int ret;
2260
2261 if (idle) {
2262 /* no need to croc if we weren't busy (e.g. during boot) */
2263 if (wl12xx_is_roc(wl)) {
2264 ret = wl12xx_croc(wl, wl->dev_role_id);
2265 if (ret < 0)
2266 goto out;
2267
2268 ret = wl12xx_cmd_role_stop_dev(wl);
2269 if (ret < 0)
2270 goto out;
2271 }
2272 wl->rate_set = wl1271_tx_min_rate_get(wl, wl->basic_rate_set);
2273 ret = wl1271_acx_sta_rate_policies(wl);
2274 if (ret < 0)
2275 goto out;
2276 ret = wl1271_acx_keep_alive_config(
2277 wl, CMD_TEMPL_KLV_IDX_NULL_DATA,
2278 ACX_KEEP_ALIVE_TPL_INVALID);
2279 if (ret < 0)
2280 goto out;
2281 set_bit(WL1271_FLAG_IDLE, &wl->flags);
2282 } else {
2283 /* The current firmware only supports sched_scan in idle */
2284 if (wl->sched_scanning) {
2285 wl1271_scan_sched_scan_stop(wl);
2286 ieee80211_sched_scan_stopped(wl->hw);
2287 }
2288
2289 ret = wl12xx_cmd_role_start_dev(wl);
2290 if (ret < 0)
2291 goto out;
2292
2293 ret = wl12xx_roc(wl, wl->dev_role_id);
2294 if (ret < 0)
2295 goto out;
2296 clear_bit(WL1271_FLAG_IDLE, &wl->flags);
2297 }
2298
2299 out:
2300 return ret;
2301 }
2302
2303 static int wl1271_op_config(struct ieee80211_hw *hw, u32 changed)
2304 {
2305 struct wl1271 *wl = hw->priv;
2306 struct ieee80211_conf *conf = &hw->conf;
2307 int channel, ret = 0;
2308 bool is_ap;
2309
2310 channel = ieee80211_frequency_to_channel(conf->channel->center_freq);
2311
2312 wl1271_debug(DEBUG_MAC80211, "mac80211 config ch %d psm %s power %d %s"
2313 " changed 0x%x",
2314 channel,
2315 conf->flags & IEEE80211_CONF_PS ? "on" : "off",
2316 conf->power_level,
2317 conf->flags & IEEE80211_CONF_IDLE ? "idle" : "in use",
2318 changed);
2319
2320 /*
2321 * mac80211 will go to idle nearly immediately after transmitting some
2322 * frames, such as the deauth. To make sure those frames reach the air,
2323 * wait here until the TX queue is fully flushed.
2324 */
2325 if ((changed & IEEE80211_CONF_CHANGE_IDLE) &&
2326 (conf->flags & IEEE80211_CONF_IDLE))
2327 wl1271_tx_flush(wl);
2328
2329 mutex_lock(&wl->mutex);
2330
2331 if (unlikely(wl->state == WL1271_STATE_OFF)) {
2332 /* we support configuring the channel and band while off */
2333 if ((changed & IEEE80211_CONF_CHANGE_CHANNEL)) {
2334 wl->band = conf->channel->band;
2335 wl->channel = channel;
2336 }
2337
2338 if ((changed & IEEE80211_CONF_CHANGE_POWER))
2339 wl->power_level = conf->power_level;
2340
2341 goto out;
2342 }
2343
2344 is_ap = (wl->bss_type == BSS_TYPE_AP_BSS);
2345
2346 ret = wl1271_ps_elp_wakeup(wl);
2347 if (ret < 0)
2348 goto out;
2349
2350 /* if the channel changes while joined, join again */
2351 if (changed & IEEE80211_CONF_CHANGE_CHANNEL &&
2352 ((wl->band != conf->channel->band) ||
2353 (wl->channel != channel))) {
2354 /* send all pending packets */
2355 wl1271_tx_work_locked(wl);
2356 wl->band = conf->channel->band;
2357 wl->channel = channel;
2358
2359 if (!is_ap) {
2360 /*
2361 * FIXME: the mac80211 should really provide a fixed
2362 * rate to use here. for now, just use the smallest
2363 * possible rate for the band as a fixed rate for
2364 * association frames and other control messages.
2365 */
2366 if (!test_bit(WL1271_FLAG_STA_ASSOCIATED, &wl->flags))
2367 wl1271_set_band_rate(wl);
2368
2369 wl->basic_rate =
2370 wl1271_tx_min_rate_get(wl, wl->basic_rate_set);
2371 ret = wl1271_acx_sta_rate_policies(wl);
2372 if (ret < 0)
2373 wl1271_warning("rate policy for channel "
2374 "failed %d", ret);
2375
2376 if (test_bit(WL1271_FLAG_STA_ASSOCIATED, &wl->flags)) {
2377 if (wl12xx_is_roc(wl)) {
2378 /* roaming */
2379 ret = wl12xx_croc(wl, wl->dev_role_id);
2380 if (ret < 0)
2381 goto out_sleep;
2382 }
2383 ret = wl1271_join(wl, false);
2384 if (ret < 0)
2385 wl1271_warning("cmd join on channel "
2386 "failed %d", ret);
2387 } else {
2388 /*
2389 * change the ROC channel. do it only if we are
2390 * not idle. otherwise, CROC will be called
2391 * anyway.
2392 */
2393 if (wl12xx_is_roc(wl) &&
2394 !(conf->flags & IEEE80211_CONF_IDLE)) {
2395 ret = wl12xx_croc(wl, wl->dev_role_id);
2396 if (ret < 0)
2397 goto out_sleep;
2398
2399 ret = wl12xx_roc(wl, wl->dev_role_id);
2400 if (ret < 0)
2401 wl1271_warning("roc failed %d",
2402 ret);
2403 }
2404 }
2405 }
2406 }
2407
2408 if (changed & IEEE80211_CONF_CHANGE_IDLE && !is_ap) {
2409 ret = wl1271_sta_handle_idle(wl,
2410 conf->flags & IEEE80211_CONF_IDLE);
2411 if (ret < 0)
2412 wl1271_warning("idle mode change failed %d", ret);
2413 }
2414
2415 /*
2416 * if mac80211 changes the PSM mode, make sure the mode is not
2417 * incorrectly changed after the pspoll failure active window.
2418 */
2419 if (changed & IEEE80211_CONF_CHANGE_PS)
2420 clear_bit(WL1271_FLAG_PSPOLL_FAILURE, &wl->flags);
2421
2422 if (conf->flags & IEEE80211_CONF_PS &&
2423 !test_bit(WL1271_FLAG_PSM_REQUESTED, &wl->flags)) {
2424 set_bit(WL1271_FLAG_PSM_REQUESTED, &wl->flags);
2425
2426 /*
2427 * We enter PSM only if we're already associated.
2428 * If we're not, we'll enter it when joining an SSID,
2429 * through the bss_info_changed() hook.
2430 */
2431 if (test_bit(WL1271_FLAG_STA_ASSOCIATED, &wl->flags)) {
2432 wl1271_debug(DEBUG_PSM, "psm enabled");
2433 ret = wl1271_ps_set_mode(wl, STATION_POWER_SAVE_MODE,
2434 wl->basic_rate, true);
2435 }
2436 } else if (!(conf->flags & IEEE80211_CONF_PS) &&
2437 test_bit(WL1271_FLAG_PSM_REQUESTED, &wl->flags)) {
2438 wl1271_debug(DEBUG_PSM, "psm disabled");
2439
2440 clear_bit(WL1271_FLAG_PSM_REQUESTED, &wl->flags);
2441
2442 if (test_bit(WL1271_FLAG_PSM, &wl->flags))
2443 ret = wl1271_ps_set_mode(wl, STATION_ACTIVE_MODE,
2444 wl->basic_rate, true);
2445 }
2446
2447 if (conf->power_level != wl->power_level) {
2448 ret = wl1271_acx_tx_power(wl, conf->power_level);
2449 if (ret < 0)
2450 goto out_sleep;
2451
2452 wl->power_level = conf->power_level;
2453 }
2454
2455 out_sleep:
2456 wl1271_ps_elp_sleep(wl);
2457
2458 out:
2459 mutex_unlock(&wl->mutex);
2460
2461 return ret;
2462 }
2463
2464 struct wl1271_filter_params {
2465 bool enabled;
2466 int mc_list_length;
2467 u8 mc_list[ACX_MC_ADDRESS_GROUP_MAX][ETH_ALEN];
2468 };
2469
2470 static u64 wl1271_op_prepare_multicast(struct ieee80211_hw *hw,
2471 struct netdev_hw_addr_list *mc_list)
2472 {
2473 struct wl1271_filter_params *fp;
2474 struct netdev_hw_addr *ha;
2475 struct wl1271 *wl = hw->priv;
2476
2477 if (unlikely(wl->state == WL1271_STATE_OFF))
2478 return 0;
2479
2480 fp = kzalloc(sizeof(*fp), GFP_ATOMIC);
2481 if (!fp) {
2482 wl1271_error("Out of memory setting filters.");
2483 return 0;
2484 }
2485
2486 /* update multicast filtering parameters */
2487 fp->mc_list_length = 0;
2488 if (netdev_hw_addr_list_count(mc_list) > ACX_MC_ADDRESS_GROUP_MAX) {
2489 fp->enabled = false;
2490 } else {
2491 fp->enabled = true;
2492 netdev_hw_addr_list_for_each(ha, mc_list) {
2493 memcpy(fp->mc_list[fp->mc_list_length],
2494 ha->addr, ETH_ALEN);
2495 fp->mc_list_length++;
2496 }
2497 }
2498
2499 return (u64)(unsigned long)fp;
2500 }
2501
2502 #define WL1271_SUPPORTED_FILTERS (FIF_PROMISC_IN_BSS | \
2503 FIF_ALLMULTI | \
2504 FIF_FCSFAIL | \
2505 FIF_BCN_PRBRESP_PROMISC | \
2506 FIF_CONTROL | \
2507 FIF_OTHER_BSS)
2508
2509 static void wl1271_op_configure_filter(struct ieee80211_hw *hw,
2510 unsigned int changed,
2511 unsigned int *total, u64 multicast)
2512 {
2513 struct wl1271_filter_params *fp = (void *)(unsigned long)multicast;
2514 struct wl1271 *wl = hw->priv;
2515 int ret;
2516
2517 wl1271_debug(DEBUG_MAC80211, "mac80211 configure filter changed %x"
2518 " total %x", changed, *total);
2519
2520 mutex_lock(&wl->mutex);
2521
2522 *total &= WL1271_SUPPORTED_FILTERS;
2523 changed &= WL1271_SUPPORTED_FILTERS;
2524
2525 if (unlikely(wl->state == WL1271_STATE_OFF))
2526 goto out;
2527
2528 ret = wl1271_ps_elp_wakeup(wl);
2529 if (ret < 0)
2530 goto out;
2531
2532 if (wl->bss_type != BSS_TYPE_AP_BSS) {
2533 if (*total & FIF_ALLMULTI)
2534 ret = wl1271_acx_group_address_tbl(wl, false, NULL, 0);
2535 else if (fp)
2536 ret = wl1271_acx_group_address_tbl(wl, fp->enabled,
2537 fp->mc_list,
2538 fp->mc_list_length);
2539 if (ret < 0)
2540 goto out_sleep;
2541 }
2542
2543 /*
2544 * the fw doesn't provide an api to configure the filters. instead,
2545 * the filters configuration is based on the active roles / ROC
2546 * state.
2547 */
2548
2549 out_sleep:
2550 wl1271_ps_elp_sleep(wl);
2551
2552 out:
2553 mutex_unlock(&wl->mutex);
2554 kfree(fp);
2555 }
2556
2557 static int wl1271_record_ap_key(struct wl1271 *wl, u8 id, u8 key_type,
2558 u8 key_size, const u8 *key, u8 hlid, u32 tx_seq_32,
2559 u16 tx_seq_16)
2560 {
2561 struct wl1271_ap_key *ap_key;
2562 int i;
2563
2564 wl1271_debug(DEBUG_CRYPT, "record ap key id %d", (int)id);
2565
2566 if (key_size > MAX_KEY_SIZE)
2567 return -EINVAL;
2568
2569 /*
2570 * Find next free entry in ap_keys. Also check we are not replacing
2571 * an existing key.
2572 */
2573 for (i = 0; i < MAX_NUM_KEYS; i++) {
2574 if (wl->recorded_ap_keys[i] == NULL)
2575 break;
2576
2577 if (wl->recorded_ap_keys[i]->id == id) {
2578 wl1271_warning("trying to record key replacement");
2579 return -EINVAL;
2580 }
2581 }
2582
2583 if (i == MAX_NUM_KEYS)
2584 return -EBUSY;
2585
2586 ap_key = kzalloc(sizeof(*ap_key), GFP_KERNEL);
2587 if (!ap_key)
2588 return -ENOMEM;
2589
2590 ap_key->id = id;
2591 ap_key->key_type = key_type;
2592 ap_key->key_size = key_size;
2593 memcpy(ap_key->key, key, key_size);
2594 ap_key->hlid = hlid;
2595 ap_key->tx_seq_32 = tx_seq_32;
2596 ap_key->tx_seq_16 = tx_seq_16;
2597
2598 wl->recorded_ap_keys[i] = ap_key;
2599 return 0;
2600 }
2601
2602 static void wl1271_free_ap_keys(struct wl1271 *wl)
2603 {
2604 int i;
2605
2606 for (i = 0; i < MAX_NUM_KEYS; i++) {
2607 kfree(wl->recorded_ap_keys[i]);
2608 wl->recorded_ap_keys[i] = NULL;
2609 }
2610 }
2611
2612 static int wl1271_ap_init_hwenc(struct wl1271 *wl)
2613 {
2614 int i, ret = 0;
2615 struct wl1271_ap_key *key;
2616 bool wep_key_added = false;
2617
2618 for (i = 0; i < MAX_NUM_KEYS; i++) {
2619 u8 hlid;
2620 if (wl->recorded_ap_keys[i] == NULL)
2621 break;
2622
2623 key = wl->recorded_ap_keys[i];
2624 hlid = key->hlid;
2625 if (hlid == WL12XX_INVALID_LINK_ID)
2626 hlid = wl->ap_bcast_hlid;
2627
2628 ret = wl1271_cmd_set_ap_key(wl, KEY_ADD_OR_REPLACE,
2629 key->id, key->key_type,
2630 key->key_size, key->key,
2631 hlid, key->tx_seq_32,
2632 key->tx_seq_16);
2633 if (ret < 0)
2634 goto out;
2635
2636 if (key->key_type == KEY_WEP)
2637 wep_key_added = true;
2638 }
2639
2640 if (wep_key_added) {
2641 ret = wl12xx_cmd_set_default_wep_key(wl, wl->default_key,
2642 wl->ap_bcast_hlid);
2643 if (ret < 0)
2644 goto out;
2645 }
2646
2647 out:
2648 wl1271_free_ap_keys(wl);
2649 return ret;
2650 }
2651
2652 static int wl1271_set_key(struct wl1271 *wl, u16 action, u8 id, u8 key_type,
2653 u8 key_size, const u8 *key, u32 tx_seq_32,
2654 u16 tx_seq_16, struct ieee80211_sta *sta)
2655 {
2656 int ret;
2657 bool is_ap = (wl->bss_type == BSS_TYPE_AP_BSS);
2658
2659 if (is_ap) {
2660 struct wl1271_station *wl_sta;
2661 u8 hlid;
2662
2663 if (sta) {
2664 wl_sta = (struct wl1271_station *)sta->drv_priv;
2665 hlid = wl_sta->hlid;
2666 } else {
2667 hlid = wl->ap_bcast_hlid;
2668 }
2669
2670 if (!test_bit(WL1271_FLAG_AP_STARTED, &wl->flags)) {
2671 /*
2672 * We do not support removing keys after AP shutdown.
2673 * Pretend we do to make mac80211 happy.
2674 */
2675 if (action != KEY_ADD_OR_REPLACE)
2676 return 0;
2677
2678 ret = wl1271_record_ap_key(wl, id,
2679 key_type, key_size,
2680 key, hlid, tx_seq_32,
2681 tx_seq_16);
2682 } else {
2683 ret = wl1271_cmd_set_ap_key(wl, action,
2684 id, key_type, key_size,
2685 key, hlid, tx_seq_32,
2686 tx_seq_16);
2687 }
2688
2689 if (ret < 0)
2690 return ret;
2691 } else {
2692 const u8 *addr;
2693 static const u8 bcast_addr[ETH_ALEN] = {
2694 0xff, 0xff, 0xff, 0xff, 0xff, 0xff
2695 };
2696
2697 /*
2698 * A STA set to GEM cipher requires 2 tx spare blocks.
2699 * Return to default value when GEM cipher key is removed
2700 */
2701 if (key_type == KEY_GEM) {
2702 if (action == KEY_ADD_OR_REPLACE)
2703 wl->tx_spare_blocks = 2;
2704 else if (action == KEY_REMOVE)
2705 wl->tx_spare_blocks = TX_HW_BLOCK_SPARE_DEFAULT;
2706 }
2707
2708 addr = sta ? sta->addr : bcast_addr;
2709
2710 if (is_zero_ether_addr(addr)) {
2711 /* We dont support TX only encryption */
2712 return -EOPNOTSUPP;
2713 }
2714
2715 /* The wl1271 does not allow to remove unicast keys - they
2716 will be cleared automatically on next CMD_JOIN. Ignore the
2717 request silently, as we dont want the mac80211 to emit
2718 an error message. */
2719 if (action == KEY_REMOVE && !is_broadcast_ether_addr(addr))
2720 return 0;
2721
2722 /* don't remove key if hlid was already deleted */
2723 if (action == KEY_REMOVE &&
2724 wl->sta_hlid == WL12XX_INVALID_LINK_ID)
2725 return 0;
2726
2727 ret = wl1271_cmd_set_sta_key(wl, action,
2728 id, key_type, key_size,
2729 key, addr, tx_seq_32,
2730 tx_seq_16);
2731 if (ret < 0)
2732 return ret;
2733
2734 /* the default WEP key needs to be configured at least once */
2735 if (key_type == KEY_WEP) {
2736 ret = wl12xx_cmd_set_default_wep_key(wl,
2737 wl->default_key,
2738 wl->sta_hlid);
2739 if (ret < 0)
2740 return ret;
2741 }
2742 }
2743
2744 return 0;
2745 }
2746
2747 static int wl1271_op_set_key(struct ieee80211_hw *hw, enum set_key_cmd cmd,
2748 struct ieee80211_vif *vif,
2749 struct ieee80211_sta *sta,
2750 struct ieee80211_key_conf *key_conf)
2751 {
2752 struct wl1271 *wl = hw->priv;
2753 int ret;
2754 u32 tx_seq_32 = 0;
2755 u16 tx_seq_16 = 0;
2756 u8 key_type;
2757
2758 wl1271_debug(DEBUG_MAC80211, "mac80211 set key");
2759
2760 wl1271_debug(DEBUG_CRYPT, "CMD: 0x%x sta: %p", cmd, sta);
2761 wl1271_debug(DEBUG_CRYPT, "Key: algo:0x%x, id:%d, len:%d flags 0x%x",
2762 key_conf->cipher, key_conf->keyidx,
2763 key_conf->keylen, key_conf->flags);
2764 wl1271_dump(DEBUG_CRYPT, "KEY: ", key_conf->key, key_conf->keylen);
2765
2766 mutex_lock(&wl->mutex);
2767
2768 if (unlikely(wl->state == WL1271_STATE_OFF)) {
2769 ret = -EAGAIN;
2770 goto out_unlock;
2771 }
2772
2773 ret = wl1271_ps_elp_wakeup(wl);
2774 if (ret < 0)
2775 goto out_unlock;
2776
2777 switch (key_conf->cipher) {
2778 case WLAN_CIPHER_SUITE_WEP40:
2779 case WLAN_CIPHER_SUITE_WEP104:
2780 key_type = KEY_WEP;
2781
2782 key_conf->hw_key_idx = key_conf->keyidx;
2783 break;
2784 case WLAN_CIPHER_SUITE_TKIP:
2785 key_type = KEY_TKIP;
2786
2787 key_conf->hw_key_idx = key_conf->keyidx;
2788 tx_seq_32 = WL1271_TX_SECURITY_HI32(wl->tx_security_seq);
2789 tx_seq_16 = WL1271_TX_SECURITY_LO16(wl->tx_security_seq);
2790 break;
2791 case WLAN_CIPHER_SUITE_CCMP:
2792 key_type = KEY_AES;
2793
2794 key_conf->flags |= IEEE80211_KEY_FLAG_GENERATE_IV;
2795 tx_seq_32 = WL1271_TX_SECURITY_HI32(wl->tx_security_seq);
2796 tx_seq_16 = WL1271_TX_SECURITY_LO16(wl->tx_security_seq);
2797 break;
2798 case WL1271_CIPHER_SUITE_GEM:
2799 key_type = KEY_GEM;
2800 tx_seq_32 = WL1271_TX_SECURITY_HI32(wl->tx_security_seq);
2801 tx_seq_16 = WL1271_TX_SECURITY_LO16(wl->tx_security_seq);
2802 break;
2803 default:
2804 wl1271_error("Unknown key algo 0x%x", key_conf->cipher);
2805
2806 ret = -EOPNOTSUPP;
2807 goto out_sleep;
2808 }
2809
2810 switch (cmd) {
2811 case SET_KEY:
2812 ret = wl1271_set_key(wl, KEY_ADD_OR_REPLACE,
2813 key_conf->keyidx, key_type,
2814 key_conf->keylen, key_conf->key,
2815 tx_seq_32, tx_seq_16, sta);
2816 if (ret < 0) {
2817 wl1271_error("Could not add or replace key");
2818 goto out_sleep;
2819 }
2820 break;
2821
2822 case DISABLE_KEY:
2823 ret = wl1271_set_key(wl, KEY_REMOVE,
2824 key_conf->keyidx, key_type,
2825 key_conf->keylen, key_conf->key,
2826 0, 0, sta);
2827 if (ret < 0) {
2828 wl1271_error("Could not remove key");
2829 goto out_sleep;
2830 }
2831 break;
2832
2833 default:
2834 wl1271_error("Unsupported key cmd 0x%x", cmd);
2835 ret = -EOPNOTSUPP;
2836 break;
2837 }
2838
2839 out_sleep:
2840 wl1271_ps_elp_sleep(wl);
2841
2842 out_unlock:
2843 mutex_unlock(&wl->mutex);
2844
2845 return ret;
2846 }
2847
2848 static int wl1271_op_hw_scan(struct ieee80211_hw *hw,
2849 struct ieee80211_vif *vif,
2850 struct cfg80211_scan_request *req)
2851 {
2852 struct wl1271 *wl = hw->priv;
2853 int ret;
2854 u8 *ssid = NULL;
2855 size_t len = 0;
2856
2857 wl1271_debug(DEBUG_MAC80211, "mac80211 hw scan");
2858
2859 if (req->n_ssids) {
2860 ssid = req->ssids[0].ssid;
2861 len = req->ssids[0].ssid_len;
2862 }
2863
2864 mutex_lock(&wl->mutex);
2865
2866 if (wl->state == WL1271_STATE_OFF) {
2867 /*
2868 * We cannot return -EBUSY here because cfg80211 will expect
2869 * a call to ieee80211_scan_completed if we do - in this case
2870 * there won't be any call.
2871 */
2872 ret = -EAGAIN;
2873 goto out;
2874 }
2875
2876 ret = wl1271_ps_elp_wakeup(wl);
2877 if (ret < 0)
2878 goto out;
2879
2880 /* cancel ROC before scanning */
2881 if (wl12xx_is_roc(wl)) {
2882 if (test_bit(WL1271_FLAG_STA_ASSOCIATED, &wl->flags)) {
2883 /* don't allow scanning right now */
2884 ret = -EBUSY;
2885 goto out_sleep;
2886 }
2887 wl12xx_croc(wl, wl->dev_role_id);
2888 wl12xx_cmd_role_stop_dev(wl);
2889 }
2890
2891 ret = wl1271_scan(hw->priv, ssid, len, req);
2892 out_sleep:
2893 wl1271_ps_elp_sleep(wl);
2894 out:
2895 mutex_unlock(&wl->mutex);
2896
2897 return ret;
2898 }
2899
2900 static void wl1271_op_cancel_hw_scan(struct ieee80211_hw *hw,
2901 struct ieee80211_vif *vif)
2902 {
2903 struct wl1271 *wl = hw->priv;
2904 int ret;
2905
2906 wl1271_debug(DEBUG_MAC80211, "mac80211 cancel hw scan");
2907
2908 mutex_lock(&wl->mutex);
2909
2910 if (wl->state == WL1271_STATE_OFF)
2911 goto out;
2912
2913 if (wl->scan.state == WL1271_SCAN_STATE_IDLE)
2914 goto out;
2915
2916 ret = wl1271_ps_elp_wakeup(wl);
2917 if (ret < 0)
2918 goto out;
2919
2920 if (wl->scan.state != WL1271_SCAN_STATE_DONE) {
2921 ret = wl1271_scan_stop(wl);
2922 if (ret < 0)
2923 goto out_sleep;
2924 }
2925 wl->scan.state = WL1271_SCAN_STATE_IDLE;
2926 memset(wl->scan.scanned_ch, 0, sizeof(wl->scan.scanned_ch));
2927 wl->scan.req = NULL;
2928 ieee80211_scan_completed(wl->hw, true);
2929
2930 out_sleep:
2931 wl1271_ps_elp_sleep(wl);
2932 out:
2933 mutex_unlock(&wl->mutex);
2934
2935 cancel_delayed_work_sync(&wl->scan_complete_work);
2936 }
2937
2938 static int wl1271_op_sched_scan_start(struct ieee80211_hw *hw,
2939 struct ieee80211_vif *vif,
2940 struct cfg80211_sched_scan_request *req,
2941 struct ieee80211_sched_scan_ies *ies)
2942 {
2943 struct wl1271 *wl = hw->priv;
2944 int ret;
2945
2946 wl1271_debug(DEBUG_MAC80211, "wl1271_op_sched_scan_start");
2947
2948 mutex_lock(&wl->mutex);
2949
2950 ret = wl1271_ps_elp_wakeup(wl);
2951 if (ret < 0)
2952 goto out;
2953
2954 ret = wl1271_scan_sched_scan_config(wl, req, ies);
2955 if (ret < 0)
2956 goto out_sleep;
2957
2958 ret = wl1271_scan_sched_scan_start(wl);
2959 if (ret < 0)
2960 goto out_sleep;
2961
2962 wl->sched_scanning = true;
2963
2964 out_sleep:
2965 wl1271_ps_elp_sleep(wl);
2966 out:
2967 mutex_unlock(&wl->mutex);
2968 return ret;
2969 }
2970
2971 static void wl1271_op_sched_scan_stop(struct ieee80211_hw *hw,
2972 struct ieee80211_vif *vif)
2973 {
2974 struct wl1271 *wl = hw->priv;
2975 int ret;
2976
2977 wl1271_debug(DEBUG_MAC80211, "wl1271_op_sched_scan_stop");
2978
2979 mutex_lock(&wl->mutex);
2980
2981 ret = wl1271_ps_elp_wakeup(wl);
2982 if (ret < 0)
2983 goto out;
2984
2985 wl1271_scan_sched_scan_stop(wl);
2986
2987 wl1271_ps_elp_sleep(wl);
2988 out:
2989 mutex_unlock(&wl->mutex);
2990 }
2991
2992 static int wl1271_op_set_frag_threshold(struct ieee80211_hw *hw, u32 value)
2993 {
2994 struct wl1271 *wl = hw->priv;
2995 int ret = 0;
2996
2997 mutex_lock(&wl->mutex);
2998
2999 if (unlikely(wl->state == WL1271_STATE_OFF)) {
3000 ret = -EAGAIN;
3001 goto out;
3002 }
3003
3004 ret = wl1271_ps_elp_wakeup(wl);
3005 if (ret < 0)
3006 goto out;
3007
3008 ret = wl1271_acx_frag_threshold(wl, value);
3009 if (ret < 0)
3010 wl1271_warning("wl1271_op_set_frag_threshold failed: %d", ret);
3011
3012 wl1271_ps_elp_sleep(wl);
3013
3014 out:
3015 mutex_unlock(&wl->mutex);
3016
3017 return ret;
3018 }
3019
3020 static int wl1271_op_set_rts_threshold(struct ieee80211_hw *hw, u32 value)
3021 {
3022 struct wl1271 *wl = hw->priv;
3023 int ret = 0;
3024
3025 mutex_lock(&wl->mutex);
3026
3027 if (unlikely(wl->state == WL1271_STATE_OFF)) {
3028 ret = -EAGAIN;
3029 goto out;
3030 }
3031
3032 ret = wl1271_ps_elp_wakeup(wl);
3033 if (ret < 0)
3034 goto out;
3035
3036 ret = wl1271_acx_rts_threshold(wl, value);
3037 if (ret < 0)
3038 wl1271_warning("wl1271_op_set_rts_threshold failed: %d", ret);
3039
3040 wl1271_ps_elp_sleep(wl);
3041
3042 out:
3043 mutex_unlock(&wl->mutex);
3044
3045 return ret;
3046 }
3047
3048 static int wl1271_ssid_set(struct wl1271 *wl, struct sk_buff *skb,
3049 int offset)
3050 {
3051 u8 ssid_len;
3052 const u8 *ptr = cfg80211_find_ie(WLAN_EID_SSID, skb->data + offset,
3053 skb->len - offset);
3054
3055 if (!ptr) {
3056 wl1271_error("No SSID in IEs!");
3057 return -ENOENT;
3058 }
3059
3060 ssid_len = ptr[1];
3061 if (ssid_len > IEEE80211_MAX_SSID_LEN) {
3062 wl1271_error("SSID is too long!");
3063 return -EINVAL;
3064 }
3065
3066 wl->ssid_len = ssid_len;
3067 memcpy(wl->ssid, ptr+2, ssid_len);
3068 return 0;
3069 }
3070
3071 static void wl12xx_remove_ie(struct sk_buff *skb, u8 eid, int ieoffset)
3072 {
3073 int len;
3074 const u8 *next, *end = skb->data + skb->len;
3075 u8 *ie = (u8 *)cfg80211_find_ie(eid, skb->data + ieoffset,
3076 skb->len - ieoffset);
3077 if (!ie)
3078 return;
3079 len = ie[1] + 2;
3080 next = ie + len;
3081 memmove(ie, next, end - next);
3082 skb_trim(skb, skb->len - len);
3083 }
3084
3085 static void wl12xx_remove_vendor_ie(struct sk_buff *skb,
3086 unsigned int oui, u8 oui_type,
3087 int ieoffset)
3088 {
3089 int len;
3090 const u8 *next, *end = skb->data + skb->len;
3091 u8 *ie = (u8 *)cfg80211_find_vendor_ie(oui, oui_type,
3092 skb->data + ieoffset,
3093 skb->len - ieoffset);
3094 if (!ie)
3095 return;
3096 len = ie[1] + 2;
3097 next = ie + len;
3098 memmove(ie, next, end - next);
3099 skb_trim(skb, skb->len - len);
3100 }
3101
3102 static int wl1271_ap_set_probe_resp_tmpl(struct wl1271 *wl,
3103 u8 *probe_rsp_data,
3104 size_t probe_rsp_len,
3105 u32 rates)
3106 {
3107 struct ieee80211_bss_conf *bss_conf = &wl->vif->bss_conf;
3108 u8 probe_rsp_templ[WL1271_CMD_TEMPL_MAX_SIZE];
3109 int ssid_ie_offset, ie_offset, templ_len;
3110 const u8 *ptr;
3111
3112 /* no need to change probe response if the SSID is set correctly */
3113 if (wl->ssid_len > 0)
3114 return wl1271_cmd_template_set(wl,
3115 CMD_TEMPL_AP_PROBE_RESPONSE,
3116 probe_rsp_data,
3117 probe_rsp_len, 0,
3118 rates);
3119
3120 if (probe_rsp_len + bss_conf->ssid_len > WL1271_CMD_TEMPL_MAX_SIZE) {
3121 wl1271_error("probe_rsp template too big");
3122 return -EINVAL;
3123 }
3124
3125 /* start searching from IE offset */
3126 ie_offset = offsetof(struct ieee80211_mgmt, u.probe_resp.variable);
3127
3128 ptr = cfg80211_find_ie(WLAN_EID_SSID, probe_rsp_data + ie_offset,
3129 probe_rsp_len - ie_offset);
3130 if (!ptr) {
3131 wl1271_error("No SSID in beacon!");
3132 return -EINVAL;
3133 }
3134
3135 ssid_ie_offset = ptr - probe_rsp_data;
3136 ptr += (ptr[1] + 2);
3137
3138 memcpy(probe_rsp_templ, probe_rsp_data, ssid_ie_offset);
3139
3140 /* insert SSID from bss_conf */
3141 probe_rsp_templ[ssid_ie_offset] = WLAN_EID_SSID;
3142 probe_rsp_templ[ssid_ie_offset + 1] = bss_conf->ssid_len;
3143 memcpy(probe_rsp_templ + ssid_ie_offset + 2,
3144 bss_conf->ssid, bss_conf->ssid_len);
3145 templ_len = ssid_ie_offset + 2 + bss_conf->ssid_len;
3146
3147 memcpy(probe_rsp_templ + ssid_ie_offset + 2 + bss_conf->ssid_len,
3148 ptr, probe_rsp_len - (ptr - probe_rsp_data));
3149 templ_len += probe_rsp_len - (ptr - probe_rsp_data);
3150
3151 return wl1271_cmd_template_set(wl,
3152 CMD_TEMPL_AP_PROBE_RESPONSE,
3153 probe_rsp_templ,
3154 templ_len, 0,
3155 rates);
3156 }
3157
3158 static int wl1271_bss_erp_info_changed(struct wl1271 *wl,
3159 struct ieee80211_bss_conf *bss_conf,
3160 u32 changed)
3161 {
3162 int ret = 0;
3163
3164 if (changed & BSS_CHANGED_ERP_SLOT) {
3165 if (bss_conf->use_short_slot)
3166 ret = wl1271_acx_slot(wl, SLOT_TIME_SHORT);
3167 else
3168 ret = wl1271_acx_slot(wl, SLOT_TIME_LONG);
3169 if (ret < 0) {
3170 wl1271_warning("Set slot time failed %d", ret);
3171 goto out;
3172 }
3173 }
3174
3175 if (changed & BSS_CHANGED_ERP_PREAMBLE) {
3176 if (bss_conf->use_short_preamble)
3177 wl1271_acx_set_preamble(wl, ACX_PREAMBLE_SHORT);
3178 else
3179 wl1271_acx_set_preamble(wl, ACX_PREAMBLE_LONG);
3180 }
3181
3182 if (changed & BSS_CHANGED_ERP_CTS_PROT) {
3183 if (bss_conf->use_cts_prot)
3184 ret = wl1271_acx_cts_protect(wl, CTSPROTECT_ENABLE);
3185 else
3186 ret = wl1271_acx_cts_protect(wl, CTSPROTECT_DISABLE);
3187 if (ret < 0) {
3188 wl1271_warning("Set ctsprotect failed %d", ret);
3189 goto out;
3190 }
3191 }
3192
3193 out:
3194 return ret;
3195 }
3196
3197 static int wl1271_bss_beacon_info_changed(struct wl1271 *wl,
3198 struct ieee80211_vif *vif,
3199 struct ieee80211_bss_conf *bss_conf,
3200 u32 changed)
3201 {
3202 bool is_ap = (wl->bss_type == BSS_TYPE_AP_BSS);
3203 int ret = 0;
3204
3205 if ((changed & BSS_CHANGED_BEACON_INT)) {
3206 wl1271_debug(DEBUG_MASTER, "beacon interval updated: %d",
3207 bss_conf->beacon_int);
3208
3209 wl->beacon_int = bss_conf->beacon_int;
3210 }
3211
3212 if ((changed & BSS_CHANGED_BEACON)) {
3213 struct ieee80211_hdr *hdr;
3214 u32 min_rate;
3215 int ieoffset = offsetof(struct ieee80211_mgmt,
3216 u.beacon.variable);
3217 struct sk_buff *beacon = ieee80211_beacon_get(wl->hw, vif);
3218 u16 tmpl_id;
3219
3220 if (!beacon)
3221 goto out;
3222
3223 wl1271_debug(DEBUG_MASTER, "beacon updated");
3224
3225 ret = wl1271_ssid_set(wl, beacon, ieoffset);
3226 if (ret < 0) {
3227 dev_kfree_skb(beacon);
3228 goto out;
3229 }
3230 min_rate = wl1271_tx_min_rate_get(wl, wl->basic_rate_set);
3231 tmpl_id = is_ap ? CMD_TEMPL_AP_BEACON :
3232 CMD_TEMPL_BEACON;
3233 ret = wl1271_cmd_template_set(wl, tmpl_id,
3234 beacon->data,
3235 beacon->len, 0,
3236 min_rate);
3237 if (ret < 0) {
3238 dev_kfree_skb(beacon);
3239 goto out;
3240 }
3241
3242 /* remove TIM ie from probe response */
3243 wl12xx_remove_ie(beacon, WLAN_EID_TIM, ieoffset);
3244
3245 /*
3246 * remove p2p ie from probe response.
3247 * the fw reponds to probe requests that don't include
3248 * the p2p ie. probe requests with p2p ie will be passed,
3249 * and will be responded by the supplicant (the spec
3250 * forbids including the p2p ie when responding to probe
3251 * requests that didn't include it).
3252 */
3253 wl12xx_remove_vendor_ie(beacon, WLAN_OUI_WFA,
3254 WLAN_OUI_TYPE_WFA_P2P, ieoffset);
3255
3256 hdr = (struct ieee80211_hdr *) beacon->data;
3257 hdr->frame_control = cpu_to_le16(IEEE80211_FTYPE_MGMT |
3258 IEEE80211_STYPE_PROBE_RESP);
3259 if (is_ap)
3260 ret = wl1271_ap_set_probe_resp_tmpl(wl,
3261 beacon->data,
3262 beacon->len,
3263 min_rate);
3264 else
3265 ret = wl1271_cmd_template_set(wl,
3266 CMD_TEMPL_PROBE_RESPONSE,
3267 beacon->data,
3268 beacon->len, 0,
3269 min_rate);
3270 dev_kfree_skb(beacon);
3271 if (ret < 0)
3272 goto out;
3273 }
3274
3275 out:
3276 return ret;
3277 }
3278
3279 /* AP mode changes */
3280 static void wl1271_bss_info_changed_ap(struct wl1271 *wl,
3281 struct ieee80211_vif *vif,
3282 struct ieee80211_bss_conf *bss_conf,
3283 u32 changed)
3284 {
3285 int ret = 0;
3286
3287 if ((changed & BSS_CHANGED_BASIC_RATES)) {
3288 u32 rates = bss_conf->basic_rates;
3289
3290 wl->basic_rate_set = wl1271_tx_enabled_rates_get(wl, rates,
3291 wl->band);
3292 wl->basic_rate = wl1271_tx_min_rate_get(wl,
3293 wl->basic_rate_set);
3294
3295 ret = wl1271_init_ap_rates(wl);
3296 if (ret < 0) {
3297 wl1271_error("AP rate policy change failed %d", ret);
3298 goto out;
3299 }
3300
3301 ret = wl1271_ap_init_templates(wl);
3302 if (ret < 0)
3303 goto out;
3304 }
3305
3306 ret = wl1271_bss_beacon_info_changed(wl, vif, bss_conf, changed);
3307 if (ret < 0)
3308 goto out;
3309
3310 if ((changed & BSS_CHANGED_BEACON_ENABLED)) {
3311 if (bss_conf->enable_beacon) {
3312 if (!test_bit(WL1271_FLAG_AP_STARTED, &wl->flags)) {
3313 ret = wl12xx_cmd_role_start_ap(wl);
3314 if (ret < 0)
3315 goto out;
3316
3317 ret = wl1271_ap_init_hwenc(wl);
3318 if (ret < 0)
3319 goto out;
3320
3321 set_bit(WL1271_FLAG_AP_STARTED, &wl->flags);
3322 wl1271_debug(DEBUG_AP, "started AP");
3323 }
3324 } else {
3325 if (test_bit(WL1271_FLAG_AP_STARTED, &wl->flags)) {
3326 ret = wl12xx_cmd_role_stop_ap(wl);
3327 if (ret < 0)
3328 goto out;
3329
3330 clear_bit(WL1271_FLAG_AP_STARTED, &wl->flags);
3331 wl1271_debug(DEBUG_AP, "stopped AP");
3332 }
3333 }
3334 }
3335
3336 ret = wl1271_bss_erp_info_changed(wl, bss_conf, changed);
3337 if (ret < 0)
3338 goto out;
3339
3340 /* Handle HT information change */
3341 if ((changed & BSS_CHANGED_HT) &&
3342 (bss_conf->channel_type != NL80211_CHAN_NO_HT)) {
3343 ret = wl1271_acx_set_ht_information(wl,
3344 bss_conf->ht_operation_mode);
3345 if (ret < 0) {
3346 wl1271_warning("Set ht information failed %d", ret);
3347 goto out;
3348 }
3349 }
3350
3351 out:
3352 return;
3353 }
3354
3355 /* STA/IBSS mode changes */
3356 static void wl1271_bss_info_changed_sta(struct wl1271 *wl,
3357 struct ieee80211_vif *vif,
3358 struct ieee80211_bss_conf *bss_conf,
3359 u32 changed)
3360 {
3361 bool do_join = false, set_assoc = false;
3362 bool is_ibss = (wl->bss_type == BSS_TYPE_IBSS);
3363 bool ibss_joined = false;
3364 u32 sta_rate_set = 0;
3365 int ret;
3366 struct ieee80211_sta *sta;
3367 bool sta_exists = false;
3368 struct ieee80211_sta_ht_cap sta_ht_cap;
3369
3370 if (is_ibss) {
3371 ret = wl1271_bss_beacon_info_changed(wl, vif, bss_conf,
3372 changed);
3373 if (ret < 0)
3374 goto out;
3375 }
3376
3377 if (changed & BSS_CHANGED_IBSS) {
3378 if (bss_conf->ibss_joined) {
3379 set_bit(WL1271_FLAG_IBSS_JOINED, &wl->flags);
3380 ibss_joined = true;
3381 } else {
3382 if (test_and_clear_bit(WL1271_FLAG_IBSS_JOINED,
3383 &wl->flags)) {
3384 wl1271_unjoin(wl);
3385 wl12xx_cmd_role_start_dev(wl);
3386 wl12xx_roc(wl, wl->dev_role_id);
3387 }
3388 }
3389 }
3390
3391 if ((changed & BSS_CHANGED_BEACON_INT) && ibss_joined)
3392 do_join = true;
3393
3394 /* Need to update the SSID (for filtering etc) */
3395 if ((changed & BSS_CHANGED_BEACON) && ibss_joined)
3396 do_join = true;
3397
3398 if ((changed & BSS_CHANGED_BEACON_ENABLED) && ibss_joined) {
3399 wl1271_debug(DEBUG_ADHOC, "ad-hoc beaconing: %s",
3400 bss_conf->enable_beacon ? "enabled" : "disabled");
3401
3402 if (bss_conf->enable_beacon)
3403 wl->set_bss_type = BSS_TYPE_IBSS;
3404 else
3405 wl->set_bss_type = BSS_TYPE_STA_BSS;
3406 do_join = true;
3407 }
3408
3409 if ((changed & BSS_CHANGED_CQM)) {
3410 bool enable = false;
3411 if (bss_conf->cqm_rssi_thold)
3412 enable = true;
3413 ret = wl1271_acx_rssi_snr_trigger(wl, enable,
3414 bss_conf->cqm_rssi_thold,
3415 bss_conf->cqm_rssi_hyst);
3416 if (ret < 0)
3417 goto out;
3418 wl->rssi_thold = bss_conf->cqm_rssi_thold;
3419 }
3420
3421 if ((changed & BSS_CHANGED_BSSID) &&
3422 /*
3423 * Now we know the correct bssid, so we send a new join command
3424 * and enable the BSSID filter
3425 */
3426 memcmp(wl->bssid, bss_conf->bssid, ETH_ALEN)) {
3427 memcpy(wl->bssid, bss_conf->bssid, ETH_ALEN);
3428
3429 if (!is_zero_ether_addr(wl->bssid)) {
3430 ret = wl1271_cmd_build_null_data(wl);
3431 if (ret < 0)
3432 goto out;
3433
3434 ret = wl1271_build_qos_null_data(wl);
3435 if (ret < 0)
3436 goto out;
3437
3438 /* Need to update the BSSID (for filtering etc) */
3439 do_join = true;
3440 }
3441 }
3442
3443 if (changed & (BSS_CHANGED_ASSOC | BSS_CHANGED_HT)) {
3444 rcu_read_lock();
3445 sta = ieee80211_find_sta(vif, bss_conf->bssid);
3446 if (!sta)
3447 goto sta_not_found;
3448
3449 /* save the supp_rates of the ap */
3450 sta_rate_set = sta->supp_rates[wl->hw->conf.channel->band];
3451 if (sta->ht_cap.ht_supported)
3452 sta_rate_set |=
3453 (sta->ht_cap.mcs.rx_mask[0] << HW_HT_RATES_OFFSET);
3454 sta_ht_cap = sta->ht_cap;
3455 sta_exists = true;
3456
3457 sta_not_found:
3458 rcu_read_unlock();
3459 }
3460
3461 if ((changed & BSS_CHANGED_ASSOC)) {
3462 if (bss_conf->assoc) {
3463 u32 rates;
3464 int ieoffset;
3465 wl->aid = bss_conf->aid;
3466 set_assoc = true;
3467
3468 wl->ps_poll_failures = 0;
3469
3470 /*
3471 * use basic rates from AP, and determine lowest rate
3472 * to use with control frames.
3473 */
3474 rates = bss_conf->basic_rates;
3475 wl->basic_rate_set =
3476 wl1271_tx_enabled_rates_get(wl, rates,
3477 wl->band);
3478 wl->basic_rate =
3479 wl1271_tx_min_rate_get(wl, wl->basic_rate_set);
3480 if (sta_rate_set)
3481 wl->rate_set = wl1271_tx_enabled_rates_get(wl,
3482 sta_rate_set,
3483 wl->band);
3484 ret = wl1271_acx_sta_rate_policies(wl);
3485 if (ret < 0)
3486 goto out;
3487
3488 /*
3489 * with wl1271, we don't need to update the
3490 * beacon_int and dtim_period, because the firmware
3491 * updates it by itself when the first beacon is
3492 * received after a join.
3493 */
3494 ret = wl1271_cmd_build_ps_poll(wl, wl->aid);
3495 if (ret < 0)
3496 goto out;
3497
3498 /*
3499 * Get a template for hardware connection maintenance
3500 */
3501 dev_kfree_skb(wl->probereq);
3502 wl->probereq = wl1271_cmd_build_ap_probe_req(wl, NULL);
3503 ieoffset = offsetof(struct ieee80211_mgmt,
3504 u.probe_req.variable);
3505 wl1271_ssid_set(wl, wl->probereq, ieoffset);
3506
3507 /* enable the connection monitoring feature */
3508 ret = wl1271_acx_conn_monit_params(wl, true);
3509 if (ret < 0)
3510 goto out;
3511 } else {
3512 /* use defaults when not associated */
3513 bool was_assoc =
3514 !!test_and_clear_bit(WL1271_FLAG_STA_ASSOCIATED,
3515 &wl->flags);
3516 bool was_ifup =
3517 !!test_and_clear_bit(WL1271_FLAG_STA_STATE_SENT,
3518 &wl->flags);
3519 wl->aid = 0;
3520
3521 /* free probe-request template */
3522 dev_kfree_skb(wl->probereq);
3523 wl->probereq = NULL;
3524
3525 /* re-enable dynamic ps - just in case */
3526 ieee80211_enable_dyn_ps(wl->vif);
3527
3528 /* revert back to minimum rates for the current band */
3529 wl1271_set_band_rate(wl);
3530 wl->basic_rate =
3531 wl1271_tx_min_rate_get(wl, wl->basic_rate_set);
3532 ret = wl1271_acx_sta_rate_policies(wl);
3533 if (ret < 0)
3534 goto out;
3535
3536 /* disable connection monitor features */
3537 ret = wl1271_acx_conn_monit_params(wl, false);
3538
3539 /* Disable the keep-alive feature */
3540 ret = wl1271_acx_keep_alive_mode(wl, false);
3541 if (ret < 0)
3542 goto out;
3543
3544 /* restore the bssid filter and go to dummy bssid */
3545 if (was_assoc) {
3546 u32 conf_flags = wl->hw->conf.flags;
3547 /*
3548 * we might have to disable roc, if there was
3549 * no IF_OPER_UP notification.
3550 */
3551 if (!was_ifup) {
3552 ret = wl12xx_croc(wl, wl->role_id);
3553 if (ret < 0)
3554 goto out;
3555 }
3556 /*
3557 * (we also need to disable roc in case of
3558 * roaming on the same channel. until we will
3559 * have a better flow...)
3560 */
3561 if (test_bit(wl->dev_role_id, wl->roc_map)) {
3562 ret = wl12xx_croc(wl, wl->dev_role_id);
3563 if (ret < 0)
3564 goto out;
3565 }
3566
3567 wl1271_unjoin(wl);
3568 if (!(conf_flags & IEEE80211_CONF_IDLE)) {
3569 wl12xx_cmd_role_start_dev(wl);
3570 wl12xx_roc(wl, wl->dev_role_id);
3571 }
3572 }
3573 }
3574 }
3575
3576 if (changed & BSS_CHANGED_IBSS) {
3577 wl1271_debug(DEBUG_ADHOC, "ibss_joined: %d",
3578 bss_conf->ibss_joined);
3579
3580 if (bss_conf->ibss_joined) {
3581 u32 rates = bss_conf->basic_rates;
3582 wl->basic_rate_set =
3583 wl1271_tx_enabled_rates_get(wl, rates,
3584 wl->band);
3585 wl->basic_rate =
3586 wl1271_tx_min_rate_get(wl, wl->basic_rate_set);
3587
3588 /* by default, use 11b + OFDM rates */
3589 wl->rate_set = CONF_TX_IBSS_DEFAULT_RATES;
3590 ret = wl1271_acx_sta_rate_policies(wl);
3591 if (ret < 0)
3592 goto out;
3593 }
3594 }
3595
3596 ret = wl1271_bss_erp_info_changed(wl, bss_conf, changed);
3597 if (ret < 0)
3598 goto out;
3599
3600 if (changed & BSS_CHANGED_ARP_FILTER) {
3601 __be32 addr = bss_conf->arp_addr_list[0];
3602 WARN_ON(wl->bss_type != BSS_TYPE_STA_BSS);
3603
3604 if (bss_conf->arp_addr_cnt == 1 &&
3605 bss_conf->arp_filter_enabled) {
3606 /*
3607 * The template should have been configured only upon
3608 * association. however, it seems that the correct ip
3609 * isn't being set (when sending), so we have to
3610 * reconfigure the template upon every ip change.
3611 */
3612 ret = wl1271_cmd_build_arp_rsp(wl, addr);
3613 if (ret < 0) {
3614 wl1271_warning("build arp rsp failed: %d", ret);
3615 goto out;
3616 }
3617
3618 ret = wl1271_acx_arp_ip_filter(wl,
3619 ACX_ARP_FILTER_ARP_FILTERING,
3620 addr);
3621 } else
3622 ret = wl1271_acx_arp_ip_filter(wl, 0, addr);
3623
3624 if (ret < 0)
3625 goto out;
3626 }
3627
3628 if (do_join) {
3629 ret = wl1271_join(wl, set_assoc);
3630 if (ret < 0) {
3631 wl1271_warning("cmd join failed %d", ret);
3632 goto out;
3633 }
3634
3635 /* ROC until connected (after EAPOL exchange) */
3636 if (!is_ibss) {
3637 ret = wl12xx_roc(wl, wl->role_id);
3638 if (ret < 0)
3639 goto out;
3640
3641 wl1271_check_operstate(wl,
3642 ieee80211_get_operstate(vif));
3643 }
3644 /*
3645 * stop device role if started (we might already be in
3646 * STA role). TODO: make it better.
3647 */
3648 if (wl->dev_role_id != WL12XX_INVALID_ROLE_ID) {
3649 ret = wl12xx_croc(wl, wl->dev_role_id);
3650 if (ret < 0)
3651 goto out;
3652
3653 ret = wl12xx_cmd_role_stop_dev(wl);
3654 if (ret < 0)
3655 goto out;
3656 }
3657
3658 /* If we want to go in PSM but we're not there yet */
3659 if (test_bit(WL1271_FLAG_PSM_REQUESTED, &wl->flags) &&
3660 !test_bit(WL1271_FLAG_PSM, &wl->flags)) {
3661 enum wl1271_cmd_ps_mode mode;
3662
3663 mode = STATION_POWER_SAVE_MODE;
3664 ret = wl1271_ps_set_mode(wl, mode,
3665 wl->basic_rate,
3666 true);
3667 if (ret < 0)
3668 goto out;
3669 }
3670 }
3671
3672 /* Handle new association with HT. Do this after join. */
3673 if (sta_exists) {
3674 if ((changed & BSS_CHANGED_HT) &&
3675 (bss_conf->channel_type != NL80211_CHAN_NO_HT)) {
3676 ret = wl1271_acx_set_ht_capabilities(wl,
3677 &sta_ht_cap,
3678 true,
3679 wl->sta_hlid);
3680 if (ret < 0) {
3681 wl1271_warning("Set ht cap true failed %d",
3682 ret);
3683 goto out;
3684 }
3685 }
3686 /* handle new association without HT and disassociation */
3687 else if (changed & BSS_CHANGED_ASSOC) {
3688 ret = wl1271_acx_set_ht_capabilities(wl,
3689 &sta_ht_cap,
3690 false,
3691 wl->sta_hlid);
3692 if (ret < 0) {
3693 wl1271_warning("Set ht cap false failed %d",
3694 ret);
3695 goto out;
3696 }
3697 }
3698 }
3699
3700 /* Handle HT information change. Done after join. */
3701 if ((changed & BSS_CHANGED_HT) &&
3702 (bss_conf->channel_type != NL80211_CHAN_NO_HT)) {
3703 ret = wl1271_acx_set_ht_information(wl,
3704 bss_conf->ht_operation_mode);
3705 if (ret < 0) {
3706 wl1271_warning("Set ht information failed %d", ret);
3707 goto out;
3708 }
3709 }
3710
3711 out:
3712 return;
3713 }
3714
3715 static void wl1271_op_bss_info_changed(struct ieee80211_hw *hw,
3716 struct ieee80211_vif *vif,
3717 struct ieee80211_bss_conf *bss_conf,
3718 u32 changed)
3719 {
3720 struct wl1271 *wl = hw->priv;
3721 bool is_ap = (wl->bss_type == BSS_TYPE_AP_BSS);
3722 int ret;
3723
3724 wl1271_debug(DEBUG_MAC80211, "mac80211 bss info changed 0x%x",
3725 (int)changed);
3726
3727 mutex_lock(&wl->mutex);
3728
3729 if (unlikely(wl->state == WL1271_STATE_OFF))
3730 goto out;
3731
3732 ret = wl1271_ps_elp_wakeup(wl);
3733 if (ret < 0)
3734 goto out;
3735
3736 if (is_ap)
3737 wl1271_bss_info_changed_ap(wl, vif, bss_conf, changed);
3738 else
3739 wl1271_bss_info_changed_sta(wl, vif, bss_conf, changed);
3740
3741 wl1271_ps_elp_sleep(wl);
3742
3743 out:
3744 mutex_unlock(&wl->mutex);
3745 }
3746
3747 static int wl1271_op_conf_tx(struct ieee80211_hw *hw,
3748 struct ieee80211_vif *vif, u16 queue,
3749 const struct ieee80211_tx_queue_params *params)
3750 {
3751 struct wl1271 *wl = hw->priv;
3752 u8 ps_scheme;
3753 int ret = 0;
3754
3755 mutex_lock(&wl->mutex);
3756
3757 wl1271_debug(DEBUG_MAC80211, "mac80211 conf tx %d", queue);
3758
3759 if (params->uapsd)
3760 ps_scheme = CONF_PS_SCHEME_UPSD_TRIGGER;
3761 else
3762 ps_scheme = CONF_PS_SCHEME_LEGACY;
3763
3764 if (wl->state == WL1271_STATE_OFF) {
3765 /*
3766 * If the state is off, the parameters will be recorded and
3767 * configured on init. This happens in AP-mode.
3768 */
3769 struct conf_tx_ac_category *conf_ac =
3770 &wl->conf.tx.ac_conf[wl1271_tx_get_queue(queue)];
3771 struct conf_tx_tid *conf_tid =
3772 &wl->conf.tx.tid_conf[wl1271_tx_get_queue(queue)];
3773
3774 conf_ac->ac = wl1271_tx_get_queue(queue);
3775 conf_ac->cw_min = (u8)params->cw_min;
3776 conf_ac->cw_max = params->cw_max;
3777 conf_ac->aifsn = params->aifs;
3778 conf_ac->tx_op_limit = params->txop << 5;
3779
3780 conf_tid->queue_id = wl1271_tx_get_queue(queue);
3781 conf_tid->channel_type = CONF_CHANNEL_TYPE_EDCF;
3782 conf_tid->tsid = wl1271_tx_get_queue(queue);
3783 conf_tid->ps_scheme = ps_scheme;
3784 conf_tid->ack_policy = CONF_ACK_POLICY_LEGACY;
3785 conf_tid->apsd_conf[0] = 0;
3786 conf_tid->apsd_conf[1] = 0;
3787 goto out;
3788 }
3789
3790 ret = wl1271_ps_elp_wakeup(wl);
3791 if (ret < 0)
3792 goto out;
3793
3794 /*
3795 * the txop is confed in units of 32us by the mac80211,
3796 * we need us
3797 */
3798 ret = wl1271_acx_ac_cfg(wl, wl1271_tx_get_queue(queue),
3799 params->cw_min, params->cw_max,
3800 params->aifs, params->txop << 5);
3801 if (ret < 0)
3802 goto out_sleep;
3803
3804 ret = wl1271_acx_tid_cfg(wl, wl1271_tx_get_queue(queue),
3805 CONF_CHANNEL_TYPE_EDCF,
3806 wl1271_tx_get_queue(queue),
3807 ps_scheme, CONF_ACK_POLICY_LEGACY,
3808 0, 0);
3809
3810 out_sleep:
3811 wl1271_ps_elp_sleep(wl);
3812
3813 out:
3814 mutex_unlock(&wl->mutex);
3815
3816 return ret;
3817 }
3818
3819 static u64 wl1271_op_get_tsf(struct ieee80211_hw *hw,
3820 struct ieee80211_vif *vif)
3821 {
3822
3823 struct wl1271 *wl = hw->priv;
3824 u64 mactime = ULLONG_MAX;
3825 int ret;
3826
3827 wl1271_debug(DEBUG_MAC80211, "mac80211 get tsf");
3828
3829 mutex_lock(&wl->mutex);
3830
3831 if (unlikely(wl->state == WL1271_STATE_OFF))
3832 goto out;
3833
3834 ret = wl1271_ps_elp_wakeup(wl);
3835 if (ret < 0)
3836 goto out;
3837
3838 ret = wl1271_acx_tsf_info(wl, &mactime);
3839 if (ret < 0)
3840 goto out_sleep;
3841
3842 out_sleep:
3843 wl1271_ps_elp_sleep(wl);
3844
3845 out:
3846 mutex_unlock(&wl->mutex);
3847 return mactime;
3848 }
3849
3850 static int wl1271_op_get_survey(struct ieee80211_hw *hw, int idx,
3851 struct survey_info *survey)
3852 {
3853 struct wl1271 *wl = hw->priv;
3854 struct ieee80211_conf *conf = &hw->conf;
3855
3856 if (idx != 0)
3857 return -ENOENT;
3858
3859 survey->channel = conf->channel;
3860 survey->filled = SURVEY_INFO_NOISE_DBM;
3861 survey->noise = wl->noise;
3862
3863 return 0;
3864 }
3865
3866 static int wl1271_allocate_sta(struct wl1271 *wl,
3867 struct ieee80211_sta *sta,
3868 u8 *hlid)
3869 {
3870 struct wl1271_station *wl_sta;
3871 int id;
3872
3873 id = find_first_zero_bit(wl->ap_hlid_map, AP_MAX_STATIONS);
3874 if (id >= AP_MAX_STATIONS) {
3875 wl1271_warning("could not allocate HLID - too much stations");
3876 return -EBUSY;
3877 }
3878
3879 wl_sta = (struct wl1271_station *)sta->drv_priv;
3880 set_bit(id, wl->ap_hlid_map);
3881 wl_sta->hlid = WL1271_AP_STA_HLID_START + id;
3882 *hlid = wl_sta->hlid;
3883 memcpy(wl->links[wl_sta->hlid].addr, sta->addr, ETH_ALEN);
3884 wl->active_sta_count++;
3885 return 0;
3886 }
3887
3888 void wl1271_free_sta(struct wl1271 *wl, u8 hlid)
3889 {
3890 int id = hlid - WL1271_AP_STA_HLID_START;
3891
3892 if (hlid < WL1271_AP_STA_HLID_START)
3893 return;
3894
3895 if (!test_bit(id, wl->ap_hlid_map))
3896 return;
3897
3898 clear_bit(id, wl->ap_hlid_map);
3899 memset(wl->links[hlid].addr, 0, ETH_ALEN);
3900 wl->links[hlid].ba_bitmap = 0;
3901 wl1271_tx_reset_link_queues(wl, hlid);
3902 __clear_bit(hlid, &wl->ap_ps_map);
3903 __clear_bit(hlid, (unsigned long *)&wl->ap_fw_ps_map);
3904 wl->active_sta_count--;
3905 }
3906
3907 static int wl1271_op_sta_add(struct ieee80211_hw *hw,
3908 struct ieee80211_vif *vif,
3909 struct ieee80211_sta *sta)
3910 {
3911 struct wl1271 *wl = hw->priv;
3912 int ret = 0;
3913 u8 hlid;
3914
3915 mutex_lock(&wl->mutex);
3916
3917 if (unlikely(wl->state == WL1271_STATE_OFF))
3918 goto out;
3919
3920 if (wl->bss_type != BSS_TYPE_AP_BSS)
3921 goto out;
3922
3923 wl1271_debug(DEBUG_MAC80211, "mac80211 add sta %d", (int)sta->aid);
3924
3925 ret = wl1271_allocate_sta(wl, sta, &hlid);
3926 if (ret < 0)
3927 goto out;
3928
3929 ret = wl1271_ps_elp_wakeup(wl);
3930 if (ret < 0)
3931 goto out_free_sta;
3932
3933 ret = wl12xx_cmd_add_peer(wl, sta, hlid);
3934 if (ret < 0)
3935 goto out_sleep;
3936
3937 ret = wl12xx_cmd_set_peer_state(wl, hlid);
3938 if (ret < 0)
3939 goto out_sleep;
3940
3941 ret = wl1271_acx_set_ht_capabilities(wl, &sta->ht_cap, true, hlid);
3942 if (ret < 0)
3943 goto out_sleep;
3944
3945 out_sleep:
3946 wl1271_ps_elp_sleep(wl);
3947
3948 out_free_sta:
3949 if (ret < 0)
3950 wl1271_free_sta(wl, hlid);
3951
3952 out:
3953 mutex_unlock(&wl->mutex);
3954 return ret;
3955 }
3956
3957 static int wl1271_op_sta_remove(struct ieee80211_hw *hw,
3958 struct ieee80211_vif *vif,
3959 struct ieee80211_sta *sta)
3960 {
3961 struct wl1271 *wl = hw->priv;
3962 struct wl1271_station *wl_sta;
3963 int ret = 0, id;
3964
3965 mutex_lock(&wl->mutex);
3966
3967 if (unlikely(wl->state == WL1271_STATE_OFF))
3968 goto out;
3969
3970 if (wl->bss_type != BSS_TYPE_AP_BSS)
3971 goto out;
3972
3973 wl1271_debug(DEBUG_MAC80211, "mac80211 remove sta %d", (int)sta->aid);
3974
3975 wl_sta = (struct wl1271_station *)sta->drv_priv;
3976 id = wl_sta->hlid - WL1271_AP_STA_HLID_START;
3977 if (WARN_ON(!test_bit(id, wl->ap_hlid_map)))
3978 goto out;
3979
3980 ret = wl1271_ps_elp_wakeup(wl);
3981 if (ret < 0)
3982 goto out;
3983
3984 ret = wl12xx_cmd_remove_peer(wl, wl_sta->hlid);
3985 if (ret < 0)
3986 goto out_sleep;
3987
3988 wl1271_free_sta(wl, wl_sta->hlid);
3989
3990 out_sleep:
3991 wl1271_ps_elp_sleep(wl);
3992
3993 out:
3994 mutex_unlock(&wl->mutex);
3995 return ret;
3996 }
3997
3998 static int wl1271_op_ampdu_action(struct ieee80211_hw *hw,
3999 struct ieee80211_vif *vif,
4000 enum ieee80211_ampdu_mlme_action action,
4001 struct ieee80211_sta *sta, u16 tid, u16 *ssn,
4002 u8 buf_size)
4003 {
4004 struct wl1271 *wl = hw->priv;
4005 int ret;
4006 u8 hlid, *ba_bitmap;
4007
4008 wl1271_debug(DEBUG_MAC80211, "mac80211 ampdu action %d tid %d", action,
4009 tid);
4010
4011 /* sanity check - the fields in FW are only 8bits wide */
4012 if (WARN_ON(tid > 0xFF))
4013 return -ENOTSUPP;
4014
4015 mutex_lock(&wl->mutex);
4016
4017 if (unlikely(wl->state == WL1271_STATE_OFF)) {
4018 ret = -EAGAIN;
4019 goto out;
4020 }
4021
4022 if (wl->bss_type == BSS_TYPE_STA_BSS) {
4023 hlid = wl->sta_hlid;
4024 ba_bitmap = &wl->ba_rx_bitmap;
4025 } else if (wl->bss_type == BSS_TYPE_AP_BSS) {
4026 struct wl1271_station *wl_sta;
4027
4028 wl_sta = (struct wl1271_station *)sta->drv_priv;
4029 hlid = wl_sta->hlid;
4030 ba_bitmap = &wl->links[hlid].ba_bitmap;
4031 } else {
4032 ret = -EINVAL;
4033 goto out;
4034 }
4035
4036 ret = wl1271_ps_elp_wakeup(wl);
4037 if (ret < 0)
4038 goto out;
4039
4040 wl1271_debug(DEBUG_MAC80211, "mac80211 ampdu: Rx tid %d action %d",
4041 tid, action);
4042
4043 switch (action) {
4044 case IEEE80211_AMPDU_RX_START:
4045 if (!wl->ba_support || !wl->ba_allowed) {
4046 ret = -ENOTSUPP;
4047 break;
4048 }
4049
4050 if (wl->ba_rx_session_count >= RX_BA_MAX_SESSIONS) {
4051 ret = -EBUSY;
4052 wl1271_error("exceeded max RX BA sessions");
4053 break;
4054 }
4055
4056 if (*ba_bitmap & BIT(tid)) {
4057 ret = -EINVAL;
4058 wl1271_error("cannot enable RX BA session on active "
4059 "tid: %d", tid);
4060 break;
4061 }
4062
4063 ret = wl12xx_acx_set_ba_receiver_session(wl, tid, *ssn, true,
4064 hlid);
4065 if (!ret) {
4066 *ba_bitmap |= BIT(tid);
4067 wl->ba_rx_session_count++;
4068 }
4069 break;
4070
4071 case IEEE80211_AMPDU_RX_STOP:
4072 if (!(*ba_bitmap & BIT(tid))) {
4073 ret = -EINVAL;
4074 wl1271_error("no active RX BA session on tid: %d",
4075 tid);
4076 break;
4077 }
4078
4079 ret = wl12xx_acx_set_ba_receiver_session(wl, tid, 0, false,
4080 hlid);
4081 if (!ret) {
4082 *ba_bitmap &= ~BIT(tid);
4083 wl->ba_rx_session_count--;
4084 }
4085 break;
4086
4087 /*
4088 * The BA initiator session management in FW independently.
4089 * Falling break here on purpose for all TX APDU commands.
4090 */
4091 case IEEE80211_AMPDU_TX_START:
4092 case IEEE80211_AMPDU_TX_STOP:
4093 case IEEE80211_AMPDU_TX_OPERATIONAL:
4094 ret = -EINVAL;
4095 break;
4096
4097 default:
4098 wl1271_error("Incorrect ampdu action id=%x\n", action);
4099 ret = -EINVAL;
4100 }
4101
4102 wl1271_ps_elp_sleep(wl);
4103
4104 out:
4105 mutex_unlock(&wl->mutex);
4106
4107 return ret;
4108 }
4109
4110 static int wl12xx_set_bitrate_mask(struct ieee80211_hw *hw,
4111 struct ieee80211_vif *vif,
4112 const struct cfg80211_bitrate_mask *mask)
4113 {
4114 struct wl1271 *wl = hw->priv;
4115 int i;
4116
4117 wl1271_debug(DEBUG_MAC80211, "mac80211 set_bitrate_mask 0x%x 0x%x",
4118 mask->control[NL80211_BAND_2GHZ].legacy,
4119 mask->control[NL80211_BAND_5GHZ].legacy);
4120
4121 mutex_lock(&wl->mutex);
4122
4123 for (i = 0; i < IEEE80211_NUM_BANDS; i++)
4124 wl->bitrate_masks[i] =
4125 wl1271_tx_enabled_rates_get(wl,
4126 mask->control[i].legacy,
4127 i);
4128 mutex_unlock(&wl->mutex);
4129
4130 return 0;
4131 }
4132
4133 static bool wl1271_tx_frames_pending(struct ieee80211_hw *hw)
4134 {
4135 struct wl1271 *wl = hw->priv;
4136 bool ret = false;
4137
4138 mutex_lock(&wl->mutex);
4139
4140 if (unlikely(wl->state == WL1271_STATE_OFF))
4141 goto out;
4142
4143 /* packets are considered pending if in the TX queue or the FW */
4144 ret = (wl1271_tx_total_queue_count(wl) > 0) || (wl->tx_frames_cnt > 0);
4145
4146 /* the above is appropriate for STA mode for PS purposes */
4147 WARN_ON(wl->bss_type != BSS_TYPE_STA_BSS);
4148
4149 out:
4150 mutex_unlock(&wl->mutex);
4151
4152 return ret;
4153 }
4154
4155 /* can't be const, mac80211 writes to this */
4156 static struct ieee80211_rate wl1271_rates[] = {
4157 { .bitrate = 10,
4158 .hw_value = CONF_HW_BIT_RATE_1MBPS,
4159 .hw_value_short = CONF_HW_BIT_RATE_1MBPS, },
4160 { .bitrate = 20,
4161 .hw_value = CONF_HW_BIT_RATE_2MBPS,
4162 .hw_value_short = CONF_HW_BIT_RATE_2MBPS,
4163 .flags = IEEE80211_RATE_SHORT_PREAMBLE },
4164 { .bitrate = 55,
4165 .hw_value = CONF_HW_BIT_RATE_5_5MBPS,
4166 .hw_value_short = CONF_HW_BIT_RATE_5_5MBPS,
4167 .flags = IEEE80211_RATE_SHORT_PREAMBLE },
4168 { .bitrate = 110,
4169 .hw_value = CONF_HW_BIT_RATE_11MBPS,
4170 .hw_value_short = CONF_HW_BIT_RATE_11MBPS,
4171 .flags = IEEE80211_RATE_SHORT_PREAMBLE },
4172 { .bitrate = 60,
4173 .hw_value = CONF_HW_BIT_RATE_6MBPS,
4174 .hw_value_short = CONF_HW_BIT_RATE_6MBPS, },
4175 { .bitrate = 90,
4176 .hw_value = CONF_HW_BIT_RATE_9MBPS,
4177 .hw_value_short = CONF_HW_BIT_RATE_9MBPS, },
4178 { .bitrate = 120,
4179 .hw_value = CONF_HW_BIT_RATE_12MBPS,
4180 .hw_value_short = CONF_HW_BIT_RATE_12MBPS, },
4181 { .bitrate = 180,
4182 .hw_value = CONF_HW_BIT_RATE_18MBPS,
4183 .hw_value_short = CONF_HW_BIT_RATE_18MBPS, },
4184 { .bitrate = 240,
4185 .hw_value = CONF_HW_BIT_RATE_24MBPS,
4186 .hw_value_short = CONF_HW_BIT_RATE_24MBPS, },
4187 { .bitrate = 360,
4188 .hw_value = CONF_HW_BIT_RATE_36MBPS,
4189 .hw_value_short = CONF_HW_BIT_RATE_36MBPS, },
4190 { .bitrate = 480,
4191 .hw_value = CONF_HW_BIT_RATE_48MBPS,
4192 .hw_value_short = CONF_HW_BIT_RATE_48MBPS, },
4193 { .bitrate = 540,
4194 .hw_value = CONF_HW_BIT_RATE_54MBPS,
4195 .hw_value_short = CONF_HW_BIT_RATE_54MBPS, },
4196 };
4197
4198 /* can't be const, mac80211 writes to this */
4199 static struct ieee80211_channel wl1271_channels[] = {
4200 { .hw_value = 1, .center_freq = 2412, .max_power = 25 },
4201 { .hw_value = 2, .center_freq = 2417, .max_power = 25 },
4202 { .hw_value = 3, .center_freq = 2422, .max_power = 25 },
4203 { .hw_value = 4, .center_freq = 2427, .max_power = 25 },
4204 { .hw_value = 5, .center_freq = 2432, .max_power = 25 },
4205 { .hw_value = 6, .center_freq = 2437, .max_power = 25 },
4206 { .hw_value = 7, .center_freq = 2442, .max_power = 25 },
4207 { .hw_value = 8, .center_freq = 2447, .max_power = 25 },
4208 { .hw_value = 9, .center_freq = 2452, .max_power = 25 },
4209 { .hw_value = 10, .center_freq = 2457, .max_power = 25 },
4210 { .hw_value = 11, .center_freq = 2462, .max_power = 25 },
4211 { .hw_value = 12, .center_freq = 2467, .max_power = 25 },
4212 { .hw_value = 13, .center_freq = 2472, .max_power = 25 },
4213 { .hw_value = 14, .center_freq = 2484, .max_power = 25 },
4214 };
4215
4216 /* mapping to indexes for wl1271_rates */
4217 static const u8 wl1271_rate_to_idx_2ghz[] = {
4218 /* MCS rates are used only with 11n */
4219 7, /* CONF_HW_RXTX_RATE_MCS7 */
4220 6, /* CONF_HW_RXTX_RATE_MCS6 */
4221 5, /* CONF_HW_RXTX_RATE_MCS5 */
4222 4, /* CONF_HW_RXTX_RATE_MCS4 */
4223 3, /* CONF_HW_RXTX_RATE_MCS3 */
4224 2, /* CONF_HW_RXTX_RATE_MCS2 */
4225 1, /* CONF_HW_RXTX_RATE_MCS1 */
4226 0, /* CONF_HW_RXTX_RATE_MCS0 */
4227
4228 11, /* CONF_HW_RXTX_RATE_54 */
4229 10, /* CONF_HW_RXTX_RATE_48 */
4230 9, /* CONF_HW_RXTX_RATE_36 */
4231 8, /* CONF_HW_RXTX_RATE_24 */
4232
4233 /* TI-specific rate */
4234 CONF_HW_RXTX_RATE_UNSUPPORTED, /* CONF_HW_RXTX_RATE_22 */
4235
4236 7, /* CONF_HW_RXTX_RATE_18 */
4237 6, /* CONF_HW_RXTX_RATE_12 */
4238 3, /* CONF_HW_RXTX_RATE_11 */
4239 5, /* CONF_HW_RXTX_RATE_9 */
4240 4, /* CONF_HW_RXTX_RATE_6 */
4241 2, /* CONF_HW_RXTX_RATE_5_5 */
4242 1, /* CONF_HW_RXTX_RATE_2 */
4243 0 /* CONF_HW_RXTX_RATE_1 */
4244 };
4245
4246 /* 11n STA capabilities */
4247 #define HW_RX_HIGHEST_RATE 72
4248
4249 #define WL12XX_HT_CAP { \
4250 .cap = IEEE80211_HT_CAP_GRN_FLD | IEEE80211_HT_CAP_SGI_20 | \
4251 (1 << IEEE80211_HT_CAP_RX_STBC_SHIFT), \
4252 .ht_supported = true, \
4253 .ampdu_factor = IEEE80211_HT_MAX_AMPDU_8K, \
4254 .ampdu_density = IEEE80211_HT_MPDU_DENSITY_8, \
4255 .mcs = { \
4256 .rx_mask = { 0xff, 0, 0, 0, 0, 0, 0, 0, 0, 0, }, \
4257 .rx_highest = cpu_to_le16(HW_RX_HIGHEST_RATE), \
4258 .tx_params = IEEE80211_HT_MCS_TX_DEFINED, \
4259 }, \
4260 }
4261
4262 /* can't be const, mac80211 writes to this */
4263 static struct ieee80211_supported_band wl1271_band_2ghz = {
4264 .channels = wl1271_channels,
4265 .n_channels = ARRAY_SIZE(wl1271_channels),
4266 .bitrates = wl1271_rates,
4267 .n_bitrates = ARRAY_SIZE(wl1271_rates),
4268 .ht_cap = WL12XX_HT_CAP,
4269 };
4270
4271 /* 5 GHz data rates for WL1273 */
4272 static struct ieee80211_rate wl1271_rates_5ghz[] = {
4273 { .bitrate = 60,
4274 .hw_value = CONF_HW_BIT_RATE_6MBPS,
4275 .hw_value_short = CONF_HW_BIT_RATE_6MBPS, },
4276 { .bitrate = 90,
4277 .hw_value = CONF_HW_BIT_RATE_9MBPS,
4278 .hw_value_short = CONF_HW_BIT_RATE_9MBPS, },
4279 { .bitrate = 120,
4280 .hw_value = CONF_HW_BIT_RATE_12MBPS,
4281 .hw_value_short = CONF_HW_BIT_RATE_12MBPS, },
4282 { .bitrate = 180,
4283 .hw_value = CONF_HW_BIT_RATE_18MBPS,
4284 .hw_value_short = CONF_HW_BIT_RATE_18MBPS, },
4285 { .bitrate = 240,
4286 .hw_value = CONF_HW_BIT_RATE_24MBPS,
4287 .hw_value_short = CONF_HW_BIT_RATE_24MBPS, },
4288 { .bitrate = 360,
4289 .hw_value = CONF_HW_BIT_RATE_36MBPS,
4290 .hw_value_short = CONF_HW_BIT_RATE_36MBPS, },
4291 { .bitrate = 480,
4292 .hw_value = CONF_HW_BIT_RATE_48MBPS,
4293 .hw_value_short = CONF_HW_BIT_RATE_48MBPS, },
4294 { .bitrate = 540,
4295 .hw_value = CONF_HW_BIT_RATE_54MBPS,
4296 .hw_value_short = CONF_HW_BIT_RATE_54MBPS, },
4297 };
4298
4299 /* 5 GHz band channels for WL1273 */
4300 static struct ieee80211_channel wl1271_channels_5ghz[] = {
4301 { .hw_value = 7, .center_freq = 5035, .max_power = 25 },
4302 { .hw_value = 8, .center_freq = 5040, .max_power = 25 },
4303 { .hw_value = 9, .center_freq = 5045, .max_power = 25 },
4304 { .hw_value = 11, .center_freq = 5055, .max_power = 25 },
4305 { .hw_value = 12, .center_freq = 5060, .max_power = 25 },
4306 { .hw_value = 16, .center_freq = 5080, .max_power = 25 },
4307 { .hw_value = 34, .center_freq = 5170, .max_power = 25 },
4308 { .hw_value = 36, .center_freq = 5180, .max_power = 25 },
4309 { .hw_value = 38, .center_freq = 5190, .max_power = 25 },
4310 { .hw_value = 40, .center_freq = 5200, .max_power = 25 },
4311 { .hw_value = 42, .center_freq = 5210, .max_power = 25 },
4312 { .hw_value = 44, .center_freq = 5220, .max_power = 25 },
4313 { .hw_value = 46, .center_freq = 5230, .max_power = 25 },
4314 { .hw_value = 48, .center_freq = 5240, .max_power = 25 },
4315 { .hw_value = 52, .center_freq = 5260, .max_power = 25 },
4316 { .hw_value = 56, .center_freq = 5280, .max_power = 25 },
4317 { .hw_value = 60, .center_freq = 5300, .max_power = 25 },
4318 { .hw_value = 64, .center_freq = 5320, .max_power = 25 },
4319 { .hw_value = 100, .center_freq = 5500, .max_power = 25 },
4320 { .hw_value = 104, .center_freq = 5520, .max_power = 25 },
4321 { .hw_value = 108, .center_freq = 5540, .max_power = 25 },
4322 { .hw_value = 112, .center_freq = 5560, .max_power = 25 },
4323 { .hw_value = 116, .center_freq = 5580, .max_power = 25 },
4324 { .hw_value = 120, .center_freq = 5600, .max_power = 25 },
4325 { .hw_value = 124, .center_freq = 5620, .max_power = 25 },
4326 { .hw_value = 128, .center_freq = 5640, .max_power = 25 },
4327 { .hw_value = 132, .center_freq = 5660, .max_power = 25 },
4328 { .hw_value = 136, .center_freq = 5680, .max_power = 25 },
4329 { .hw_value = 140, .center_freq = 5700, .max_power = 25 },
4330 { .hw_value = 149, .center_freq = 5745, .max_power = 25 },
4331 { .hw_value = 153, .center_freq = 5765, .max_power = 25 },
4332 { .hw_value = 157, .center_freq = 5785, .max_power = 25 },
4333 { .hw_value = 161, .center_freq = 5805, .max_power = 25 },
4334 { .hw_value = 165, .center_freq = 5825, .max_power = 25 },
4335 };
4336
4337 /* mapping to indexes for wl1271_rates_5ghz */
4338 static const u8 wl1271_rate_to_idx_5ghz[] = {
4339 /* MCS rates are used only with 11n */
4340 7, /* CONF_HW_RXTX_RATE_MCS7 */
4341 6, /* CONF_HW_RXTX_RATE_MCS6 */
4342 5, /* CONF_HW_RXTX_RATE_MCS5 */
4343 4, /* CONF_HW_RXTX_RATE_MCS4 */
4344 3, /* CONF_HW_RXTX_RATE_MCS3 */
4345 2, /* CONF_HW_RXTX_RATE_MCS2 */
4346 1, /* CONF_HW_RXTX_RATE_MCS1 */
4347 0, /* CONF_HW_RXTX_RATE_MCS0 */
4348
4349 7, /* CONF_HW_RXTX_RATE_54 */
4350 6, /* CONF_HW_RXTX_RATE_48 */
4351 5, /* CONF_HW_RXTX_RATE_36 */
4352 4, /* CONF_HW_RXTX_RATE_24 */
4353
4354 /* TI-specific rate */
4355 CONF_HW_RXTX_RATE_UNSUPPORTED, /* CONF_HW_RXTX_RATE_22 */
4356
4357 3, /* CONF_HW_RXTX_RATE_18 */
4358 2, /* CONF_HW_RXTX_RATE_12 */
4359 CONF_HW_RXTX_RATE_UNSUPPORTED, /* CONF_HW_RXTX_RATE_11 */
4360 1, /* CONF_HW_RXTX_RATE_9 */
4361 0, /* CONF_HW_RXTX_RATE_6 */
4362 CONF_HW_RXTX_RATE_UNSUPPORTED, /* CONF_HW_RXTX_RATE_5_5 */
4363 CONF_HW_RXTX_RATE_UNSUPPORTED, /* CONF_HW_RXTX_RATE_2 */
4364 CONF_HW_RXTX_RATE_UNSUPPORTED /* CONF_HW_RXTX_RATE_1 */
4365 };
4366
4367 static struct ieee80211_supported_band wl1271_band_5ghz = {
4368 .channels = wl1271_channels_5ghz,
4369 .n_channels = ARRAY_SIZE(wl1271_channels_5ghz),
4370 .bitrates = wl1271_rates_5ghz,
4371 .n_bitrates = ARRAY_SIZE(wl1271_rates_5ghz),
4372 .ht_cap = WL12XX_HT_CAP,
4373 };
4374
4375 static const u8 *wl1271_band_rate_to_idx[] = {
4376 [IEEE80211_BAND_2GHZ] = wl1271_rate_to_idx_2ghz,
4377 [IEEE80211_BAND_5GHZ] = wl1271_rate_to_idx_5ghz
4378 };
4379
4380 static const struct ieee80211_ops wl1271_ops = {
4381 .start = wl1271_op_start,
4382 .stop = wl1271_op_stop,
4383 .add_interface = wl1271_op_add_interface,
4384 .remove_interface = wl1271_op_remove_interface,
4385 #ifdef CONFIG_PM
4386 .suspend = wl1271_op_suspend,
4387 .resume = wl1271_op_resume,
4388 #endif
4389 .config = wl1271_op_config,
4390 .prepare_multicast = wl1271_op_prepare_multicast,
4391 .configure_filter = wl1271_op_configure_filter,
4392 .tx = wl1271_op_tx,
4393 .set_key = wl1271_op_set_key,
4394 .hw_scan = wl1271_op_hw_scan,
4395 .cancel_hw_scan = wl1271_op_cancel_hw_scan,
4396 .sched_scan_start = wl1271_op_sched_scan_start,
4397 .sched_scan_stop = wl1271_op_sched_scan_stop,
4398 .bss_info_changed = wl1271_op_bss_info_changed,
4399 .set_frag_threshold = wl1271_op_set_frag_threshold,
4400 .set_rts_threshold = wl1271_op_set_rts_threshold,
4401 .conf_tx = wl1271_op_conf_tx,
4402 .get_tsf = wl1271_op_get_tsf,
4403 .get_survey = wl1271_op_get_survey,
4404 .sta_add = wl1271_op_sta_add,
4405 .sta_remove = wl1271_op_sta_remove,
4406 .ampdu_action = wl1271_op_ampdu_action,
4407 .tx_frames_pending = wl1271_tx_frames_pending,
4408 .set_bitrate_mask = wl12xx_set_bitrate_mask,
4409 CFG80211_TESTMODE_CMD(wl1271_tm_cmd)
4410 };
4411
4412
4413 u8 wl1271_rate_to_idx(int rate, enum ieee80211_band band)
4414 {
4415 u8 idx;
4416
4417 BUG_ON(band >= sizeof(wl1271_band_rate_to_idx)/sizeof(u8 *));
4418
4419 if (unlikely(rate >= CONF_HW_RXTX_RATE_MAX)) {
4420 wl1271_error("Illegal RX rate from HW: %d", rate);
4421 return 0;
4422 }
4423
4424 idx = wl1271_band_rate_to_idx[band][rate];
4425 if (unlikely(idx == CONF_HW_RXTX_RATE_UNSUPPORTED)) {
4426 wl1271_error("Unsupported RX rate from HW: %d", rate);
4427 return 0;
4428 }
4429
4430 return idx;
4431 }
4432
4433 static ssize_t wl1271_sysfs_show_bt_coex_state(struct device *dev,
4434 struct device_attribute *attr,
4435 char *buf)
4436 {
4437 struct wl1271 *wl = dev_get_drvdata(dev);
4438 ssize_t len;
4439
4440 len = PAGE_SIZE;
4441
4442 mutex_lock(&wl->mutex);
4443 len = snprintf(buf, len, "%d\n\n0 - off\n1 - on\n",
4444 wl->sg_enabled);
4445 mutex_unlock(&wl->mutex);
4446
4447 return len;
4448
4449 }
4450
4451 static ssize_t wl1271_sysfs_store_bt_coex_state(struct device *dev,
4452 struct device_attribute *attr,
4453 const char *buf, size_t count)
4454 {
4455 struct wl1271 *wl = dev_get_drvdata(dev);
4456 unsigned long res;
4457 int ret;
4458
4459 ret = kstrtoul(buf, 10, &res);
4460 if (ret < 0) {
4461 wl1271_warning("incorrect value written to bt_coex_mode");
4462 return count;
4463 }
4464
4465 mutex_lock(&wl->mutex);
4466
4467 res = !!res;
4468
4469 if (res == wl->sg_enabled)
4470 goto out;
4471
4472 wl->sg_enabled = res;
4473
4474 if (wl->state == WL1271_STATE_OFF)
4475 goto out;
4476
4477 ret = wl1271_ps_elp_wakeup(wl);
4478 if (ret < 0)
4479 goto out;
4480
4481 wl1271_acx_sg_enable(wl, wl->sg_enabled);
4482 wl1271_ps_elp_sleep(wl);
4483
4484 out:
4485 mutex_unlock(&wl->mutex);
4486 return count;
4487 }
4488
4489 static DEVICE_ATTR(bt_coex_state, S_IRUGO | S_IWUSR,
4490 wl1271_sysfs_show_bt_coex_state,
4491 wl1271_sysfs_store_bt_coex_state);
4492
4493 static ssize_t wl1271_sysfs_show_hw_pg_ver(struct device *dev,
4494 struct device_attribute *attr,
4495 char *buf)
4496 {
4497 struct wl1271 *wl = dev_get_drvdata(dev);
4498 ssize_t len;
4499
4500 len = PAGE_SIZE;
4501
4502 mutex_lock(&wl->mutex);
4503 if (wl->hw_pg_ver >= 0)
4504 len = snprintf(buf, len, "%d\n", wl->hw_pg_ver);
4505 else
4506 len = snprintf(buf, len, "n/a\n");
4507 mutex_unlock(&wl->mutex);
4508
4509 return len;
4510 }
4511
4512 static DEVICE_ATTR(hw_pg_ver, S_IRUGO,
4513 wl1271_sysfs_show_hw_pg_ver, NULL);
4514
4515 static ssize_t wl1271_sysfs_read_fwlog(struct file *filp, struct kobject *kobj,
4516 struct bin_attribute *bin_attr,
4517 char *buffer, loff_t pos, size_t count)
4518 {
4519 struct device *dev = container_of(kobj, struct device, kobj);
4520 struct wl1271 *wl = dev_get_drvdata(dev);
4521 ssize_t len;
4522 int ret;
4523
4524 ret = mutex_lock_interruptible(&wl->mutex);
4525 if (ret < 0)
4526 return -ERESTARTSYS;
4527
4528 /* Let only one thread read the log at a time, blocking others */
4529 while (wl->fwlog_size == 0) {
4530 DEFINE_WAIT(wait);
4531
4532 prepare_to_wait_exclusive(&wl->fwlog_waitq,
4533 &wait,
4534 TASK_INTERRUPTIBLE);
4535
4536 if (wl->fwlog_size != 0) {
4537 finish_wait(&wl->fwlog_waitq, &wait);
4538 break;
4539 }
4540
4541 mutex_unlock(&wl->mutex);
4542
4543 schedule();
4544 finish_wait(&wl->fwlog_waitq, &wait);
4545
4546 if (signal_pending(current))
4547 return -ERESTARTSYS;
4548
4549 ret = mutex_lock_interruptible(&wl->mutex);
4550 if (ret < 0)
4551 return -ERESTARTSYS;
4552 }
4553
4554 /* Check if the fwlog is still valid */
4555 if (wl->fwlog_size < 0) {
4556 mutex_unlock(&wl->mutex);
4557 return 0;
4558 }
4559
4560 /* Seeking is not supported - old logs are not kept. Disregard pos. */
4561 len = min(count, (size_t)wl->fwlog_size);
4562 wl->fwlog_size -= len;
4563 memcpy(buffer, wl->fwlog, len);
4564
4565 /* Make room for new messages */
4566 memmove(wl->fwlog, wl->fwlog + len, wl->fwlog_size);
4567
4568 mutex_unlock(&wl->mutex);
4569
4570 return len;
4571 }
4572
4573 static struct bin_attribute fwlog_attr = {
4574 .attr = {.name = "fwlog", .mode = S_IRUSR},
4575 .read = wl1271_sysfs_read_fwlog,
4576 };
4577
4578 int wl1271_register_hw(struct wl1271 *wl)
4579 {
4580 int ret;
4581
4582 if (wl->mac80211_registered)
4583 return 0;
4584
4585 ret = wl1271_fetch_nvs(wl);
4586 if (ret == 0) {
4587 /* NOTE: The wl->nvs->nvs element must be first, in
4588 * order to simplify the casting, we assume it is at
4589 * the beginning of the wl->nvs structure.
4590 */
4591 u8 *nvs_ptr = (u8 *)wl->nvs;
4592
4593 wl->mac_addr[0] = nvs_ptr[11];
4594 wl->mac_addr[1] = nvs_ptr[10];
4595 wl->mac_addr[2] = nvs_ptr[6];
4596 wl->mac_addr[3] = nvs_ptr[5];
4597 wl->mac_addr[4] = nvs_ptr[4];
4598 wl->mac_addr[5] = nvs_ptr[3];
4599 }
4600
4601 SET_IEEE80211_PERM_ADDR(wl->hw, wl->mac_addr);
4602
4603 ret = ieee80211_register_hw(wl->hw);
4604 if (ret < 0) {
4605 wl1271_error("unable to register mac80211 hw: %d", ret);
4606 return ret;
4607 }
4608
4609 wl->mac80211_registered = true;
4610
4611 wl1271_debugfs_init(wl);
4612
4613 register_netdevice_notifier(&wl1271_dev_notifier);
4614
4615 wl1271_notice("loaded");
4616
4617 return 0;
4618 }
4619 EXPORT_SYMBOL_GPL(wl1271_register_hw);
4620
4621 void wl1271_unregister_hw(struct wl1271 *wl)
4622 {
4623 if (wl->state == WL1271_STATE_PLT)
4624 __wl1271_plt_stop(wl);
4625
4626 unregister_netdevice_notifier(&wl1271_dev_notifier);
4627 ieee80211_unregister_hw(wl->hw);
4628 wl->mac80211_registered = false;
4629
4630 }
4631 EXPORT_SYMBOL_GPL(wl1271_unregister_hw);
4632
4633 int wl1271_init_ieee80211(struct wl1271 *wl)
4634 {
4635 static const u32 cipher_suites[] = {
4636 WLAN_CIPHER_SUITE_WEP40,
4637 WLAN_CIPHER_SUITE_WEP104,
4638 WLAN_CIPHER_SUITE_TKIP,
4639 WLAN_CIPHER_SUITE_CCMP,
4640 WL1271_CIPHER_SUITE_GEM,
4641 };
4642
4643 /* The tx descriptor buffer and the TKIP space. */
4644 wl->hw->extra_tx_headroom = WL1271_TKIP_IV_SPACE +
4645 sizeof(struct wl1271_tx_hw_descr);
4646
4647 /* unit us */
4648 /* FIXME: find a proper value */
4649 wl->hw->channel_change_time = 10000;
4650 wl->hw->max_listen_interval = wl->conf.conn.max_listen_interval;
4651
4652 wl->hw->flags = IEEE80211_HW_SIGNAL_DBM |
4653 IEEE80211_HW_BEACON_FILTER |
4654 IEEE80211_HW_SUPPORTS_PS |
4655 IEEE80211_HW_SUPPORTS_UAPSD |
4656 IEEE80211_HW_HAS_RATE_CONTROL |
4657 IEEE80211_HW_CONNECTION_MONITOR |
4658 IEEE80211_HW_SUPPORTS_CQM_RSSI |
4659 IEEE80211_HW_REPORTS_TX_ACK_STATUS |
4660 IEEE80211_HW_SPECTRUM_MGMT |
4661 IEEE80211_HW_AP_LINK_PS |
4662 IEEE80211_HW_AMPDU_AGGREGATION |
4663 IEEE80211_HW_TX_AMPDU_SETUP_IN_HW;
4664
4665 wl->hw->wiphy->cipher_suites = cipher_suites;
4666 wl->hw->wiphy->n_cipher_suites = ARRAY_SIZE(cipher_suites);
4667
4668 wl->hw->wiphy->interface_modes = BIT(NL80211_IFTYPE_STATION) |
4669 BIT(NL80211_IFTYPE_ADHOC) | BIT(NL80211_IFTYPE_AP) |
4670 BIT(NL80211_IFTYPE_P2P_CLIENT) | BIT(NL80211_IFTYPE_P2P_GO);
4671 wl->hw->wiphy->max_scan_ssids = 1;
4672 wl->hw->wiphy->max_sched_scan_ssids = 16;
4673 wl->hw->wiphy->max_match_sets = 16;
4674 /*
4675 * Maximum length of elements in scanning probe request templates
4676 * should be the maximum length possible for a template, without
4677 * the IEEE80211 header of the template
4678 */
4679 wl->hw->wiphy->max_scan_ie_len = WL1271_CMD_TEMPL_DFLT_SIZE -
4680 sizeof(struct ieee80211_header);
4681
4682 wl->hw->wiphy->flags |= WIPHY_FLAG_AP_UAPSD;
4683
4684 /* make sure all our channels fit in the scanned_ch bitmask */
4685 BUILD_BUG_ON(ARRAY_SIZE(wl1271_channels) +
4686 ARRAY_SIZE(wl1271_channels_5ghz) >
4687 WL1271_MAX_CHANNELS);
4688 /*
4689 * We keep local copies of the band structs because we need to
4690 * modify them on a per-device basis.
4691 */
4692 memcpy(&wl->bands[IEEE80211_BAND_2GHZ], &wl1271_band_2ghz,
4693 sizeof(wl1271_band_2ghz));
4694 memcpy(&wl->bands[IEEE80211_BAND_5GHZ], &wl1271_band_5ghz,
4695 sizeof(wl1271_band_5ghz));
4696
4697 wl->hw->wiphy->bands[IEEE80211_BAND_2GHZ] =
4698 &wl->bands[IEEE80211_BAND_2GHZ];
4699 wl->hw->wiphy->bands[IEEE80211_BAND_5GHZ] =
4700 &wl->bands[IEEE80211_BAND_5GHZ];
4701
4702 wl->hw->queues = 4;
4703 wl->hw->max_rates = 1;
4704
4705 wl->hw->wiphy->reg_notifier = wl1271_reg_notify;
4706
4707 SET_IEEE80211_DEV(wl->hw, wl1271_wl_to_dev(wl));
4708
4709 wl->hw->sta_data_size = sizeof(struct wl1271_station);
4710
4711 wl->hw->max_rx_aggregation_subframes = 8;
4712
4713 return 0;
4714 }
4715 EXPORT_SYMBOL_GPL(wl1271_init_ieee80211);
4716
4717 #define WL1271_DEFAULT_CHANNEL 0
4718
4719 struct ieee80211_hw *wl1271_alloc_hw(void)
4720 {
4721 struct ieee80211_hw *hw;
4722 struct platform_device *plat_dev = NULL;
4723 struct wl1271 *wl;
4724 int i, j, ret;
4725 unsigned int order;
4726
4727 BUILD_BUG_ON(AP_MAX_LINKS > WL12XX_MAX_LINKS);
4728
4729 hw = ieee80211_alloc_hw(sizeof(*wl), &wl1271_ops);
4730 if (!hw) {
4731 wl1271_error("could not alloc ieee80211_hw");
4732 ret = -ENOMEM;
4733 goto err_hw_alloc;
4734 }
4735
4736 plat_dev = kmemdup(&wl1271_device, sizeof(wl1271_device), GFP_KERNEL);
4737 if (!plat_dev) {
4738 wl1271_error("could not allocate platform_device");
4739 ret = -ENOMEM;
4740 goto err_plat_alloc;
4741 }
4742
4743 wl = hw->priv;
4744 memset(wl, 0, sizeof(*wl));
4745
4746 INIT_LIST_HEAD(&wl->list);
4747
4748 wl->hw = hw;
4749 wl->plat_dev = plat_dev;
4750
4751 for (i = 0; i < NUM_TX_QUEUES; i++)
4752 skb_queue_head_init(&wl->tx_queue[i]);
4753
4754 for (i = 0; i < NUM_TX_QUEUES; i++)
4755 for (j = 0; j < AP_MAX_LINKS; j++)
4756 skb_queue_head_init(&wl->links[j].tx_queue[i]);
4757
4758 skb_queue_head_init(&wl->deferred_rx_queue);
4759 skb_queue_head_init(&wl->deferred_tx_queue);
4760
4761 INIT_DELAYED_WORK(&wl->elp_work, wl1271_elp_work);
4762 INIT_DELAYED_WORK(&wl->pspoll_work, wl1271_pspoll_work);
4763 INIT_WORK(&wl->netstack_work, wl1271_netstack_work);
4764 INIT_WORK(&wl->tx_work, wl1271_tx_work);
4765 INIT_WORK(&wl->recovery_work, wl1271_recovery_work);
4766 INIT_DELAYED_WORK(&wl->scan_complete_work, wl1271_scan_complete_work);
4767 INIT_WORK(&wl->rx_streaming_enable_work,
4768 wl1271_rx_streaming_enable_work);
4769 INIT_WORK(&wl->rx_streaming_disable_work,
4770 wl1271_rx_streaming_disable_work);
4771
4772 wl->freezable_wq = create_freezable_workqueue("wl12xx_wq");
4773 if (!wl->freezable_wq) {
4774 ret = -ENOMEM;
4775 goto err_hw;
4776 }
4777
4778 wl->channel = WL1271_DEFAULT_CHANNEL;
4779 wl->beacon_int = WL1271_DEFAULT_BEACON_INT;
4780 wl->default_key = 0;
4781 wl->rx_counter = 0;
4782 wl->psm_entry_retry = 0;
4783 wl->power_level = WL1271_DEFAULT_POWER_LEVEL;
4784 wl->basic_rate_set = CONF_TX_RATE_MASK_BASIC;
4785 wl->basic_rate = CONF_TX_RATE_MASK_BASIC;
4786 wl->rate_set = CONF_TX_RATE_MASK_BASIC;
4787 wl->band = IEEE80211_BAND_2GHZ;
4788 wl->vif = NULL;
4789 wl->flags = 0;
4790 wl->sg_enabled = true;
4791 wl->hw_pg_ver = -1;
4792 wl->bss_type = MAX_BSS_TYPE;
4793 wl->set_bss_type = MAX_BSS_TYPE;
4794 wl->last_tx_hlid = 0;
4795 wl->ap_ps_map = 0;
4796 wl->ap_fw_ps_map = 0;
4797 wl->quirks = 0;
4798 wl->platform_quirks = 0;
4799 wl->sched_scanning = false;
4800 wl->tx_security_seq = 0;
4801 wl->tx_security_last_seq_lsb = 0;
4802 wl->tx_spare_blocks = TX_HW_BLOCK_SPARE_DEFAULT;
4803 wl->role_id = WL12XX_INVALID_ROLE_ID;
4804 wl->system_hlid = WL12XX_SYSTEM_HLID;
4805 wl->sta_hlid = WL12XX_INVALID_LINK_ID;
4806 wl->dev_role_id = WL12XX_INVALID_ROLE_ID;
4807 wl->dev_hlid = WL12XX_INVALID_LINK_ID;
4808 wl->session_counter = 0;
4809 wl->ap_bcast_hlid = WL12XX_INVALID_LINK_ID;
4810 wl->ap_global_hlid = WL12XX_INVALID_LINK_ID;
4811 wl->active_sta_count = 0;
4812 setup_timer(&wl->rx_streaming_timer, wl1271_rx_streaming_timer,
4813 (unsigned long) wl);
4814 wl->fwlog_size = 0;
4815 init_waitqueue_head(&wl->fwlog_waitq);
4816
4817 /* The system link is always allocated */
4818 __set_bit(WL12XX_SYSTEM_HLID, wl->links_map);
4819
4820 memset(wl->tx_frames_map, 0, sizeof(wl->tx_frames_map));
4821 for (i = 0; i < ACX_TX_DESCRIPTORS; i++)
4822 wl->tx_frames[i] = NULL;
4823
4824 spin_lock_init(&wl->wl_lock);
4825
4826 wl->state = WL1271_STATE_OFF;
4827 mutex_init(&wl->mutex);
4828
4829 /* Apply default driver configuration. */
4830 wl1271_conf_init(wl);
4831 wl->bitrate_masks[IEEE80211_BAND_2GHZ] = wl->conf.tx.basic_rate;
4832 wl->bitrate_masks[IEEE80211_BAND_5GHZ] = wl->conf.tx.basic_rate_5;
4833
4834 order = get_order(WL1271_AGGR_BUFFER_SIZE);
4835 wl->aggr_buf = (u8 *)__get_free_pages(GFP_KERNEL, order);
4836 if (!wl->aggr_buf) {
4837 ret = -ENOMEM;
4838 goto err_wq;
4839 }
4840
4841 wl->dummy_packet = wl12xx_alloc_dummy_packet(wl);
4842 if (!wl->dummy_packet) {
4843 ret = -ENOMEM;
4844 goto err_aggr;
4845 }
4846
4847 /* Allocate one page for the FW log */
4848 wl->fwlog = (u8 *)get_zeroed_page(GFP_KERNEL);
4849 if (!wl->fwlog) {
4850 ret = -ENOMEM;
4851 goto err_dummy_packet;
4852 }
4853
4854 /* Register platform device */
4855 ret = platform_device_register(wl->plat_dev);
4856 if (ret) {
4857 wl1271_error("couldn't register platform device");
4858 goto err_fwlog;
4859 }
4860 dev_set_drvdata(&wl->plat_dev->dev, wl);
4861
4862 /* Create sysfs file to control bt coex state */
4863 ret = device_create_file(&wl->plat_dev->dev, &dev_attr_bt_coex_state);
4864 if (ret < 0) {
4865 wl1271_error("failed to create sysfs file bt_coex_state");
4866 goto err_platform;
4867 }
4868
4869 /* Create sysfs file to get HW PG version */
4870 ret = device_create_file(&wl->plat_dev->dev, &dev_attr_hw_pg_ver);
4871 if (ret < 0) {
4872 wl1271_error("failed to create sysfs file hw_pg_ver");
4873 goto err_bt_coex_state;
4874 }
4875
4876 /* Create sysfs file for the FW log */
4877 ret = device_create_bin_file(&wl->plat_dev->dev, &fwlog_attr);
4878 if (ret < 0) {
4879 wl1271_error("failed to create sysfs file fwlog");
4880 goto err_hw_pg_ver;
4881 }
4882
4883 return hw;
4884
4885 err_hw_pg_ver:
4886 device_remove_file(&wl->plat_dev->dev, &dev_attr_hw_pg_ver);
4887
4888 err_bt_coex_state:
4889 device_remove_file(&wl->plat_dev->dev, &dev_attr_bt_coex_state);
4890
4891 err_platform:
4892 platform_device_unregister(wl->plat_dev);
4893
4894 err_fwlog:
4895 free_page((unsigned long)wl->fwlog);
4896
4897 err_dummy_packet:
4898 dev_kfree_skb(wl->dummy_packet);
4899
4900 err_aggr:
4901 free_pages((unsigned long)wl->aggr_buf, order);
4902
4903 err_wq:
4904 destroy_workqueue(wl->freezable_wq);
4905
4906 err_hw:
4907 wl1271_debugfs_exit(wl);
4908 kfree(plat_dev);
4909
4910 err_plat_alloc:
4911 ieee80211_free_hw(hw);
4912
4913 err_hw_alloc:
4914
4915 return ERR_PTR(ret);
4916 }
4917 EXPORT_SYMBOL_GPL(wl1271_alloc_hw);
4918
4919 int wl1271_free_hw(struct wl1271 *wl)
4920 {
4921 /* Unblock any fwlog readers */
4922 mutex_lock(&wl->mutex);
4923 wl->fwlog_size = -1;
4924 wake_up_interruptible_all(&wl->fwlog_waitq);
4925 mutex_unlock(&wl->mutex);
4926
4927 device_remove_bin_file(&wl->plat_dev->dev, &fwlog_attr);
4928
4929 device_remove_file(&wl->plat_dev->dev, &dev_attr_hw_pg_ver);
4930
4931 device_remove_file(&wl->plat_dev->dev, &dev_attr_bt_coex_state);
4932 platform_device_unregister(wl->plat_dev);
4933 free_page((unsigned long)wl->fwlog);
4934 dev_kfree_skb(wl->dummy_packet);
4935 free_pages((unsigned long)wl->aggr_buf,
4936 get_order(WL1271_AGGR_BUFFER_SIZE));
4937 kfree(wl->plat_dev);
4938
4939 wl1271_debugfs_exit(wl);
4940
4941 vfree(wl->fw);
4942 wl->fw = NULL;
4943 kfree(wl->nvs);
4944 wl->nvs = NULL;
4945
4946 kfree(wl->fw_status);
4947 kfree(wl->tx_res_if);
4948 destroy_workqueue(wl->freezable_wq);
4949
4950 ieee80211_free_hw(wl->hw);
4951
4952 return 0;
4953 }
4954 EXPORT_SYMBOL_GPL(wl1271_free_hw);
4955
4956 u32 wl12xx_debug_level = DEBUG_NONE;
4957 EXPORT_SYMBOL_GPL(wl12xx_debug_level);
4958 module_param_named(debug_level, wl12xx_debug_level, uint, S_IRUSR | S_IWUSR);
4959 MODULE_PARM_DESC(debug_level, "wl12xx debugging level");
4960
4961 module_param_named(fwlog, fwlog_param, charp, 0);
4962 MODULE_PARM_DESC(keymap,
4963 "FW logger options: continuous, ondemand, dbgpins or disable");
4964
4965 module_param(bug_on_recovery, bool, S_IRUSR | S_IWUSR);
4966 MODULE_PARM_DESC(bug_on_recovery, "BUG() on fw recovery");
4967
4968 MODULE_LICENSE("GPL");
4969 MODULE_AUTHOR("Luciano Coelho <coelho@ti.com>");
4970 MODULE_AUTHOR("Juuso Oikarinen <juuso.oikarinen@nokia.com>");
Linux 2.6 ibm-acpi/thinkpad-acpi driver git tree