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OMAPDSS: VENC: fix NULL pointer dereference in DSS2 VENC sysfs debug attr on OMAP4
[zen-stable.git] / drivers / net / wireless / wl12xx / main.c
blobd5f55a149de5e43216ad46c7ebf0d4825e9d0628
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 #include <linux/interrupt.h>
36
37 #include "wl12xx.h"
38 #include "debug.h"
39 #include "wl12xx_80211.h"
40 #include "reg.h"
41 #include "io.h"
42 #include "event.h"
43 #include "tx.h"
44 #include "rx.h"
45 #include "ps.h"
46 #include "init.h"
47 #include "debugfs.h"
48 #include "cmd.h"
49 #include "boot.h"
50 #include "testmode.h"
51 #include "scan.h"
52
53 #define WL1271_BOOT_RETRIES 3
54
55 static struct conf_drv_settings default_conf = {
56 .sg = {
57 .params = {
58 [CONF_SG_ACL_BT_MASTER_MIN_BR] = 10,
59 [CONF_SG_ACL_BT_MASTER_MAX_BR] = 180,
60 [CONF_SG_ACL_BT_SLAVE_MIN_BR] = 10,
61 [CONF_SG_ACL_BT_SLAVE_MAX_BR] = 180,
62 [CONF_SG_ACL_BT_MASTER_MIN_EDR] = 10,
63 [CONF_SG_ACL_BT_MASTER_MAX_EDR] = 80,
64 [CONF_SG_ACL_BT_SLAVE_MIN_EDR] = 10,
65 [CONF_SG_ACL_BT_SLAVE_MAX_EDR] = 80,
66 [CONF_SG_ACL_WLAN_PS_MASTER_BR] = 8,
67 [CONF_SG_ACL_WLAN_PS_SLAVE_BR] = 8,
68 [CONF_SG_ACL_WLAN_PS_MASTER_EDR] = 20,
69 [CONF_SG_ACL_WLAN_PS_SLAVE_EDR] = 20,
70 [CONF_SG_ACL_WLAN_ACTIVE_MASTER_MIN_BR] = 20,
71 [CONF_SG_ACL_WLAN_ACTIVE_MASTER_MAX_BR] = 35,
72 [CONF_SG_ACL_WLAN_ACTIVE_SLAVE_MIN_BR] = 16,
73 [CONF_SG_ACL_WLAN_ACTIVE_SLAVE_MAX_BR] = 35,
74 [CONF_SG_ACL_WLAN_ACTIVE_MASTER_MIN_EDR] = 32,
75 [CONF_SG_ACL_WLAN_ACTIVE_MASTER_MAX_EDR] = 50,
76 [CONF_SG_ACL_WLAN_ACTIVE_SLAVE_MIN_EDR] = 28,
77 [CONF_SG_ACL_WLAN_ACTIVE_SLAVE_MAX_EDR] = 50,
78 [CONF_SG_ACL_ACTIVE_SCAN_WLAN_BR] = 10,
79 [CONF_SG_ACL_ACTIVE_SCAN_WLAN_EDR] = 20,
80 [CONF_SG_ACL_PASSIVE_SCAN_BT_BR] = 75,
81 [CONF_SG_ACL_PASSIVE_SCAN_WLAN_BR] = 15,
82 [CONF_SG_ACL_PASSIVE_SCAN_BT_EDR] = 27,
83 [CONF_SG_ACL_PASSIVE_SCAN_WLAN_EDR] = 17,
84 /* active scan params */
85 [CONF_SG_AUTO_SCAN_PROBE_REQ] = 170,
86 [CONF_SG_ACTIVE_SCAN_DURATION_FACTOR_HV3] = 50,
87 [CONF_SG_ACTIVE_SCAN_DURATION_FACTOR_A2DP] = 100,
88 /* passive scan params */
89 [CONF_SG_PASSIVE_SCAN_DURATION_FACTOR_A2DP_BR] = 800,
90 [CONF_SG_PASSIVE_SCAN_DURATION_FACTOR_A2DP_EDR] = 200,
91 [CONF_SG_PASSIVE_SCAN_DURATION_FACTOR_HV3] = 200,
92 /* passive scan in dual antenna params */
93 [CONF_SG_CONSECUTIVE_HV3_IN_PASSIVE_SCAN] = 0,
94 [CONF_SG_BCN_HV3_COLLISION_THRESH_IN_PASSIVE_SCAN] = 0,
95 [CONF_SG_TX_RX_PROTECTION_BWIDTH_IN_PASSIVE_SCAN] = 0,
96 /* general params */
97 [CONF_SG_STA_FORCE_PS_IN_BT_SCO] = 1,
98 [CONF_SG_ANTENNA_CONFIGURATION] = 0,
99 [CONF_SG_BEACON_MISS_PERCENT] = 60,
100 [CONF_SG_DHCP_TIME] = 5000,
101 [CONF_SG_RXT] = 1200,
102 [CONF_SG_TXT] = 1000,
103 [CONF_SG_ADAPTIVE_RXT_TXT] = 1,
104 [CONF_SG_GENERAL_USAGE_BIT_MAP] = 3,
105 [CONF_SG_HV3_MAX_SERVED] = 6,
106 [CONF_SG_PS_POLL_TIMEOUT] = 10,
107 [CONF_SG_UPSD_TIMEOUT] = 10,
108 [CONF_SG_CONSECUTIVE_CTS_THRESHOLD] = 2,
109 [CONF_SG_STA_RX_WINDOW_AFTER_DTIM] = 5,
110 [CONF_SG_STA_CONNECTION_PROTECTION_TIME] = 30,
111 /* AP params */
112 [CONF_AP_BEACON_MISS_TX] = 3,
113 [CONF_AP_RX_WINDOW_AFTER_BEACON] = 10,
114 [CONF_AP_BEACON_WINDOW_INTERVAL] = 2,
115 [CONF_AP_CONNECTION_PROTECTION_TIME] = 0,
116 [CONF_AP_BT_ACL_VAL_BT_SERVE_TIME] = 25,
117 [CONF_AP_BT_ACL_VAL_WL_SERVE_TIME] = 25,
118 },
119 .state = CONF_SG_PROTECTIVE,
120 },
121 .rx = {
122 .rx_msdu_life_time = 512000,
123 .packet_detection_threshold = 0,
124 .ps_poll_timeout = 15,
125 .upsd_timeout = 15,
126 .rts_threshold = IEEE80211_MAX_RTS_THRESHOLD,
127 .rx_cca_threshold = 0,
128 .irq_blk_threshold = 0xFFFF,
129 .irq_pkt_threshold = 0,
130 .irq_timeout = 600,
131 .queue_type = CONF_RX_QUEUE_TYPE_LOW_PRIORITY,
132 },
133 .tx = {
134 .tx_energy_detection = 0,
135 .sta_rc_conf = {
136 .enabled_rates = 0,
137 .short_retry_limit = 10,
138 .long_retry_limit = 10,
139 .aflags = 0,
140 },
141 .ac_conf_count = 4,
142 .ac_conf = {
143 [CONF_TX_AC_BE] = {
144 .ac = CONF_TX_AC_BE,
145 .cw_min = 15,
146 .cw_max = 63,
147 .aifsn = 3,
148 .tx_op_limit = 0,
149 },
150 [CONF_TX_AC_BK] = {
151 .ac = CONF_TX_AC_BK,
152 .cw_min = 15,
153 .cw_max = 63,
154 .aifsn = 7,
155 .tx_op_limit = 0,
156 },
157 [CONF_TX_AC_VI] = {
158 .ac = CONF_TX_AC_VI,
159 .cw_min = 15,
160 .cw_max = 63,
161 .aifsn = CONF_TX_AIFS_PIFS,
162 .tx_op_limit = 3008,
163 },
164 [CONF_TX_AC_VO] = {
165 .ac = CONF_TX_AC_VO,
166 .cw_min = 15,
167 .cw_max = 63,
168 .aifsn = CONF_TX_AIFS_PIFS,
169 .tx_op_limit = 1504,
170 },
171 },
172 .max_tx_retries = 100,
173 .ap_aging_period = 300,
174 .tid_conf_count = 4,
175 .tid_conf = {
176 [CONF_TX_AC_BE] = {
177 .queue_id = CONF_TX_AC_BE,
178 .channel_type = CONF_CHANNEL_TYPE_EDCF,
179 .tsid = CONF_TX_AC_BE,
180 .ps_scheme = CONF_PS_SCHEME_LEGACY,
181 .ack_policy = CONF_ACK_POLICY_LEGACY,
182 .apsd_conf = {0, 0},
183 },
184 [CONF_TX_AC_BK] = {
185 .queue_id = CONF_TX_AC_BK,
186 .channel_type = CONF_CHANNEL_TYPE_EDCF,
187 .tsid = CONF_TX_AC_BK,
188 .ps_scheme = CONF_PS_SCHEME_LEGACY,
189 .ack_policy = CONF_ACK_POLICY_LEGACY,
190 .apsd_conf = {0, 0},
191 },
192 [CONF_TX_AC_VI] = {
193 .queue_id = CONF_TX_AC_VI,
194 .channel_type = CONF_CHANNEL_TYPE_EDCF,
195 .tsid = CONF_TX_AC_VI,
196 .ps_scheme = CONF_PS_SCHEME_LEGACY,
197 .ack_policy = CONF_ACK_POLICY_LEGACY,
198 .apsd_conf = {0, 0},
199 },
200 [CONF_TX_AC_VO] = {
201 .queue_id = CONF_TX_AC_VO,
202 .channel_type = CONF_CHANNEL_TYPE_EDCF,
203 .tsid = CONF_TX_AC_VO,
204 .ps_scheme = CONF_PS_SCHEME_LEGACY,
205 .ack_policy = CONF_ACK_POLICY_LEGACY,
206 .apsd_conf = {0, 0},
207 },
208 },
209 .frag_threshold = IEEE80211_MAX_FRAG_THRESHOLD,
210 .tx_compl_timeout = 700,
211 .tx_compl_threshold = 4,
212 .basic_rate = CONF_HW_BIT_RATE_1MBPS,
213 .basic_rate_5 = CONF_HW_BIT_RATE_6MBPS,
214 .tmpl_short_retry_limit = 10,
215 .tmpl_long_retry_limit = 10,
216 },
217 .conn = {
218 .wake_up_event = CONF_WAKE_UP_EVENT_DTIM,
219 .listen_interval = 1,
220 .bcn_filt_mode = CONF_BCN_FILT_MODE_ENABLED,
221 .bcn_filt_ie_count = 2,
222 .bcn_filt_ie = {
223 [0] = {
224 .ie = WLAN_EID_CHANNEL_SWITCH,
225 .rule = CONF_BCN_RULE_PASS_ON_APPEARANCE,
226 },
227 [1] = {
228 .ie = WLAN_EID_HT_INFORMATION,
229 .rule = CONF_BCN_RULE_PASS_ON_CHANGE,
230 },
231 },
232 .synch_fail_thold = 10,
233 .bss_lose_timeout = 100,
234 .beacon_rx_timeout = 10000,
235 .broadcast_timeout = 20000,
236 .rx_broadcast_in_ps = 1,
237 .ps_poll_threshold = 10,
238 .ps_poll_recovery_period = 700,
239 .bet_enable = CONF_BET_MODE_ENABLE,
240 .bet_max_consecutive = 50,
241 .psm_entry_retries = 8,
242 .psm_exit_retries = 16,
243 .psm_entry_nullfunc_retries = 3,
244 .keep_alive_interval = 55000,
245 .max_listen_interval = 20,
246 },
247 .itrim = {
248 .enable = false,
249 .timeout = 50000,
250 },
251 .pm_config = {
252 .host_clk_settling_time = 5000,
253 .host_fast_wakeup_support = false
254 },
255 .roam_trigger = {
256 .trigger_pacing = 1,
257 .avg_weight_rssi_beacon = 20,
258 .avg_weight_rssi_data = 10,
259 .avg_weight_snr_beacon = 20,
260 .avg_weight_snr_data = 10,
261 },
262 .scan = {
263 .min_dwell_time_active = 7500,
264 .max_dwell_time_active = 30000,
265 .min_dwell_time_passive = 100000,
266 .max_dwell_time_passive = 100000,
267 .num_probe_reqs = 2,
268 },
269 .sched_scan = {
270 /* sched_scan requires dwell times in TU instead of TU/1000 */
271 .min_dwell_time_active = 30,
272 .max_dwell_time_active = 60,
273 .dwell_time_passive = 100,
274 .dwell_time_dfs = 150,
275 .num_probe_reqs = 2,
276 .rssi_threshold = -90,
277 .snr_threshold = 0,
278 },
279 .rf = {
280 .tx_per_channel_power_compensation_2 = {
281 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
282 },
283 .tx_per_channel_power_compensation_5 = {
284 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
285 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
286 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
287 },
288 },
289 .ht = {
290 .rx_ba_win_size = 8,
291 .tx_ba_win_size = 64,
292 .inactivity_timeout = 10000,
293 .tx_ba_tid_bitmap = CONF_TX_BA_ENABLED_TID_BITMAP,
294 },
295 .mem_wl127x = {
296 .num_stations = 1,
297 .ssid_profiles = 1,
298 .rx_block_num = 70,
299 .tx_min_block_num = 40,
300 .dynamic_memory = 1,
301 .min_req_tx_blocks = 100,
302 .min_req_rx_blocks = 22,
303 .tx_min = 27,
304 },
305 .mem_wl128x = {
306 .num_stations = 1,
307 .ssid_profiles = 1,
308 .rx_block_num = 40,
309 .tx_min_block_num = 40,
310 .dynamic_memory = 1,
311 .min_req_tx_blocks = 45,
312 .min_req_rx_blocks = 22,
313 .tx_min = 27,
314 },
315 .fm_coex = {
316 .enable = true,
317 .swallow_period = 5,
318 .n_divider_fref_set_1 = 0xff, /* default */
319 .n_divider_fref_set_2 = 12,
320 .m_divider_fref_set_1 = 148,
321 .m_divider_fref_set_2 = 0xffff, /* default */
322 .coex_pll_stabilization_time = 0xffffffff, /* default */
323 .ldo_stabilization_time = 0xffff, /* default */
324 .fm_disturbed_band_margin = 0xff, /* default */
325 .swallow_clk_diff = 0xff, /* default */
326 },
327 .rx_streaming = {
328 .duration = 150,
329 .queues = 0x1,
330 .interval = 20,
331 .always = 0,
332 },
333 .fwlog = {
334 .mode = WL12XX_FWLOG_ON_DEMAND,
335 .mem_blocks = 2,
336 .severity = 0,
337 .timestamp = WL12XX_FWLOG_TIMESTAMP_DISABLED,
338 .output = WL12XX_FWLOG_OUTPUT_HOST,
339 .threshold = 0,
340 },
341 .hci_io_ds = HCI_IO_DS_6MA,
342 .rate = {
343 .rate_retry_score = 32000,
344 .per_add = 8192,
345 .per_th1 = 2048,
346 .per_th2 = 4096,
347 .max_per = 8100,
348 .inverse_curiosity_factor = 5,
349 .tx_fail_low_th = 4,
350 .tx_fail_high_th = 10,
351 .per_alpha_shift = 4,
352 .per_add_shift = 13,
353 .per_beta1_shift = 10,
354 .per_beta2_shift = 8,
355 .rate_check_up = 2,
356 .rate_check_down = 12,
357 .rate_retry_policy = {
358 0x00, 0x00, 0x00, 0x00, 0x00,
359 0x00, 0x00, 0x00, 0x00, 0x00,
360 0x00, 0x00, 0x00,
361 },
362 },
363 .hangover = {
364 .recover_time = 0,
365 .hangover_period = 20,
366 .dynamic_mode = 1,
367 .early_termination_mode = 1,
368 .max_period = 20,
369 .min_period = 1,
370 .increase_delta = 1,
371 .decrease_delta = 2,
372 .quiet_time = 4,
373 .increase_time = 1,
374 .window_size = 16,
375 },
376 };
377
378 static char *fwlog_param;
379 static bool bug_on_recovery;
380
381 static void __wl1271_op_remove_interface(struct wl1271 *wl,
382 struct ieee80211_vif *vif,
383 bool reset_tx_queues);
384 static void wl1271_op_stop(struct ieee80211_hw *hw);
385 static void wl1271_free_ap_keys(struct wl1271 *wl, struct wl12xx_vif *wlvif);
386
387 static DEFINE_MUTEX(wl_list_mutex);
388 static LIST_HEAD(wl_list);
389
390 static int wl1271_check_operstate(struct wl1271 *wl, struct wl12xx_vif *wlvif,
391 unsigned char operstate)
392 {
393 int ret;
394
395 if (operstate != IF_OPER_UP)
396 return 0;
397
398 if (test_and_set_bit(WLVIF_FLAG_STA_STATE_SENT, &wlvif->flags))
399 return 0;
400
401 ret = wl12xx_cmd_set_peer_state(wl, wlvif->sta.hlid);
402 if (ret < 0)
403 return ret;
404
405 wl12xx_croc(wl, wlvif->role_id);
406
407 wl1271_info("Association completed.");
408 return 0;
409 }
410 static int wl1271_dev_notify(struct notifier_block *me, unsigned long what,
411 void *arg)
412 {
413 struct net_device *dev = arg;
414 struct wireless_dev *wdev;
415 struct wiphy *wiphy;
416 struct ieee80211_hw *hw;
417 struct wl1271 *wl;
418 struct wl1271 *wl_temp;
419 struct wl12xx_vif *wlvif;
420 int ret = 0;
421
422 /* Check that this notification is for us. */
423 if (what != NETDEV_CHANGE)
424 return NOTIFY_DONE;
425
426 wdev = dev->ieee80211_ptr;
427 if (wdev == NULL)
428 return NOTIFY_DONE;
429
430 wiphy = wdev->wiphy;
431 if (wiphy == NULL)
432 return NOTIFY_DONE;
433
434 hw = wiphy_priv(wiphy);
435 if (hw == NULL)
436 return NOTIFY_DONE;
437
438 wl_temp = hw->priv;
439 mutex_lock(&wl_list_mutex);
440 list_for_each_entry(wl, &wl_list, list) {
441 if (wl == wl_temp)
442 break;
443 }
444 mutex_unlock(&wl_list_mutex);
445 if (wl != wl_temp)
446 return NOTIFY_DONE;
447
448 mutex_lock(&wl->mutex);
449
450 if (wl->state == WL1271_STATE_OFF)
451 goto out;
452
453 if (dev->operstate != IF_OPER_UP)
454 goto out;
455 /*
456 * The correct behavior should be just getting the appropriate wlvif
457 * from the given dev, but currently we don't have a mac80211
458 * interface for it.
459 */
460 wl12xx_for_each_wlvif_sta(wl, wlvif) {
461 struct ieee80211_vif *vif = wl12xx_wlvif_to_vif(wlvif);
462
463 if (!test_bit(WLVIF_FLAG_STA_ASSOCIATED, &wlvif->flags))
464 continue;
465
466 ret = wl1271_ps_elp_wakeup(wl);
467 if (ret < 0)
468 goto out;
469
470 wl1271_check_operstate(wl, wlvif,
471 ieee80211_get_operstate(vif));
472
473 wl1271_ps_elp_sleep(wl);
474 }
475 out:
476 mutex_unlock(&wl->mutex);
477
478 return NOTIFY_OK;
479 }
480
481 static int wl1271_reg_notify(struct wiphy *wiphy,
482 struct regulatory_request *request)
483 {
484 struct ieee80211_supported_band *band;
485 struct ieee80211_channel *ch;
486 int i;
487
488 band = wiphy->bands[IEEE80211_BAND_5GHZ];
489 for (i = 0; i < band->n_channels; i++) {
490 ch = &band->channels[i];
491 if (ch->flags & IEEE80211_CHAN_DISABLED)
492 continue;
493
494 if (ch->flags & IEEE80211_CHAN_RADAR)
495 ch->flags |= IEEE80211_CHAN_NO_IBSS |
496 IEEE80211_CHAN_PASSIVE_SCAN;
497
498 }
499
500 return 0;
501 }
502
503 static int wl1271_set_rx_streaming(struct wl1271 *wl, struct wl12xx_vif *wlvif,
504 bool enable)
505 {
506 int ret = 0;
507
508 /* we should hold wl->mutex */
509 ret = wl1271_acx_ps_rx_streaming(wl, wlvif, enable);
510 if (ret < 0)
511 goto out;
512
513 if (enable)
514 set_bit(WLVIF_FLAG_RX_STREAMING_STARTED, &wlvif->flags);
515 else
516 clear_bit(WLVIF_FLAG_RX_STREAMING_STARTED, &wlvif->flags);
517 out:
518 return ret;
519 }
520
521 /*
522 * this function is being called when the rx_streaming interval
523 * has beed changed or rx_streaming should be disabled
524 */
525 int wl1271_recalc_rx_streaming(struct wl1271 *wl, struct wl12xx_vif *wlvif)
526 {
527 int ret = 0;
528 int period = wl->conf.rx_streaming.interval;
529
530 /* don't reconfigure if rx_streaming is disabled */
531 if (!test_bit(WLVIF_FLAG_RX_STREAMING_STARTED, &wlvif->flags))
532 goto out;
533
534 /* reconfigure/disable according to new streaming_period */
535 if (period &&
536 test_bit(WLVIF_FLAG_STA_ASSOCIATED, &wlvif->flags) &&
537 (wl->conf.rx_streaming.always ||
538 test_bit(WL1271_FLAG_SOFT_GEMINI, &wl->flags)))
539 ret = wl1271_set_rx_streaming(wl, wlvif, true);
540 else {
541 ret = wl1271_set_rx_streaming(wl, wlvif, false);
542 /* don't cancel_work_sync since we might deadlock */
543 del_timer_sync(&wlvif->rx_streaming_timer);
544 }
545 out:
546 return ret;
547 }
548
549 static void wl1271_rx_streaming_enable_work(struct work_struct *work)
550 {
551 int ret;
552 struct wl12xx_vif *wlvif = container_of(work, struct wl12xx_vif,
553 rx_streaming_enable_work);
554 struct wl1271 *wl = wlvif->wl;
555
556 mutex_lock(&wl->mutex);
557
558 if (test_bit(WLVIF_FLAG_RX_STREAMING_STARTED, &wlvif->flags) ||
559 !test_bit(WLVIF_FLAG_STA_ASSOCIATED, &wlvif->flags) ||
560 (!wl->conf.rx_streaming.always &&
561 !test_bit(WL1271_FLAG_SOFT_GEMINI, &wl->flags)))
562 goto out;
563
564 if (!wl->conf.rx_streaming.interval)
565 goto out;
566
567 ret = wl1271_ps_elp_wakeup(wl);
568 if (ret < 0)
569 goto out;
570
571 ret = wl1271_set_rx_streaming(wl, wlvif, true);
572 if (ret < 0)
573 goto out_sleep;
574
575 /* stop it after some time of inactivity */
576 mod_timer(&wlvif->rx_streaming_timer,
577 jiffies + msecs_to_jiffies(wl->conf.rx_streaming.duration));
578
579 out_sleep:
580 wl1271_ps_elp_sleep(wl);
581 out:
582 mutex_unlock(&wl->mutex);
583 }
584
585 static void wl1271_rx_streaming_disable_work(struct work_struct *work)
586 {
587 int ret;
588 struct wl12xx_vif *wlvif = container_of(work, struct wl12xx_vif,
589 rx_streaming_disable_work);
590 struct wl1271 *wl = wlvif->wl;
591
592 mutex_lock(&wl->mutex);
593
594 if (!test_bit(WLVIF_FLAG_RX_STREAMING_STARTED, &wlvif->flags))
595 goto out;
596
597 ret = wl1271_ps_elp_wakeup(wl);
598 if (ret < 0)
599 goto out;
600
601 ret = wl1271_set_rx_streaming(wl, wlvif, false);
602 if (ret)
603 goto out_sleep;
604
605 out_sleep:
606 wl1271_ps_elp_sleep(wl);
607 out:
608 mutex_unlock(&wl->mutex);
609 }
610
611 static void wl1271_rx_streaming_timer(unsigned long data)
612 {
613 struct wl12xx_vif *wlvif = (struct wl12xx_vif *)data;
614 struct wl1271 *wl = wlvif->wl;
615 ieee80211_queue_work(wl->hw, &wlvif->rx_streaming_disable_work);
616 }
617
618 static void wl1271_conf_init(struct wl1271 *wl)
619 {
620
621 /*
622 * This function applies the default configuration to the driver. This
623 * function is invoked upon driver load (spi probe.)
624 *
625 * The configuration is stored in a run-time structure in order to
626 * facilitate for run-time adjustment of any of the parameters. Making
627 * changes to the configuration structure will apply the new values on
628 * the next interface up (wl1271_op_start.)
629 */
630
631 /* apply driver default configuration */
632 memcpy(&wl->conf, &default_conf, sizeof(default_conf));
633
634 /* Adjust settings according to optional module parameters */
635 if (fwlog_param) {
636 if (!strcmp(fwlog_param, "continuous")) {
637 wl->conf.fwlog.mode = WL12XX_FWLOG_CONTINUOUS;
638 } else if (!strcmp(fwlog_param, "ondemand")) {
639 wl->conf.fwlog.mode = WL12XX_FWLOG_ON_DEMAND;
640 } else if (!strcmp(fwlog_param, "dbgpins")) {
641 wl->conf.fwlog.mode = WL12XX_FWLOG_CONTINUOUS;
642 wl->conf.fwlog.output = WL12XX_FWLOG_OUTPUT_DBG_PINS;
643 } else if (!strcmp(fwlog_param, "disable")) {
644 wl->conf.fwlog.mem_blocks = 0;
645 wl->conf.fwlog.output = WL12XX_FWLOG_OUTPUT_NONE;
646 } else {
647 wl1271_error("Unknown fwlog parameter %s", fwlog_param);
648 }
649 }
650 }
651
652 static int wl1271_plt_init(struct wl1271 *wl)
653 {
654 int ret;
655
656 if (wl->chip.id == CHIP_ID_1283_PG20)
657 ret = wl128x_cmd_general_parms(wl);
658 else
659 ret = wl1271_cmd_general_parms(wl);
660 if (ret < 0)
661 return ret;
662
663 if (wl->chip.id == CHIP_ID_1283_PG20)
664 ret = wl128x_cmd_radio_parms(wl);
665 else
666 ret = wl1271_cmd_radio_parms(wl);
667 if (ret < 0)
668 return ret;
669
670 if (wl->chip.id != CHIP_ID_1283_PG20) {
671 ret = wl1271_cmd_ext_radio_parms(wl);
672 if (ret < 0)
673 return ret;
674 }
675 if (ret < 0)
676 return ret;
677
678 /* Chip-specific initializations */
679 ret = wl1271_chip_specific_init(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 ret = wl12xx_acx_mem_cfg(wl);
688 if (ret < 0)
689 goto out_free_memmap;
690
691 /* Enable data path */
692 ret = wl1271_cmd_data_path(wl, 1);
693 if (ret < 0)
694 goto out_free_memmap;
695
696 /* Configure for CAM power saving (ie. always active) */
697 ret = wl1271_acx_sleep_auth(wl, WL1271_PSM_CAM);
698 if (ret < 0)
699 goto out_free_memmap;
700
701 /* configure PM */
702 ret = wl1271_acx_pm_config(wl);
703 if (ret < 0)
704 goto out_free_memmap;
705
706 return 0;
707
708 out_free_memmap:
709 kfree(wl->target_mem_map);
710 wl->target_mem_map = NULL;
711
712 return ret;
713 }
714
715 static void wl12xx_irq_ps_regulate_link(struct wl1271 *wl,
716 struct wl12xx_vif *wlvif,
717 u8 hlid, u8 tx_pkts)
718 {
719 bool fw_ps, single_sta;
720
721 fw_ps = test_bit(hlid, (unsigned long *)&wl->ap_fw_ps_map);
722 single_sta = (wl->active_sta_count == 1);
723
724 /*
725 * Wake up from high level PS if the STA is asleep with too little
726 * packets in FW or if the STA is awake.
727 */
728 if (!fw_ps || tx_pkts < WL1271_PS_STA_MAX_PACKETS)
729 wl12xx_ps_link_end(wl, wlvif, hlid);
730
731 /*
732 * Start high-level PS if the STA is asleep with enough blocks in FW.
733 * Make an exception if this is the only connected station. In this
734 * case FW-memory congestion is not a problem.
735 */
736 else if (!single_sta && fw_ps && tx_pkts >= WL1271_PS_STA_MAX_PACKETS)
737 wl12xx_ps_link_start(wl, wlvif, hlid, true);
738 }
739
740 static void wl12xx_irq_update_links_status(struct wl1271 *wl,
741 struct wl12xx_vif *wlvif,
742 struct wl12xx_fw_status *status)
743 {
744 struct wl1271_link *lnk;
745 u32 cur_fw_ps_map;
746 u8 hlid, cnt;
747
748 /* TODO: also use link_fast_bitmap here */
749
750 cur_fw_ps_map = le32_to_cpu(status->link_ps_bitmap);
751 if (wl->ap_fw_ps_map != cur_fw_ps_map) {
752 wl1271_debug(DEBUG_PSM,
753 "link ps prev 0x%x cur 0x%x changed 0x%x",
754 wl->ap_fw_ps_map, cur_fw_ps_map,
755 wl->ap_fw_ps_map ^ cur_fw_ps_map);
756
757 wl->ap_fw_ps_map = cur_fw_ps_map;
758 }
759
760 for_each_set_bit(hlid, wlvif->ap.sta_hlid_map, WL12XX_MAX_LINKS) {
761 lnk = &wl->links[hlid];
762 cnt = status->tx_lnk_free_pkts[hlid] - lnk->prev_freed_pkts;
763
764 lnk->prev_freed_pkts = status->tx_lnk_free_pkts[hlid];
765 lnk->allocated_pkts -= cnt;
766
767 wl12xx_irq_ps_regulate_link(wl, wlvif, hlid,
768 lnk->allocated_pkts);
769 }
770 }
771
772 static void wl12xx_fw_status(struct wl1271 *wl,
773 struct wl12xx_fw_status *status)
774 {
775 struct wl12xx_vif *wlvif;
776 struct timespec ts;
777 u32 old_tx_blk_count = wl->tx_blocks_available;
778 int avail, freed_blocks;
779 int i;
780
781 wl1271_raw_read(wl, FW_STATUS_ADDR, status, sizeof(*status), false);
782
783 wl1271_debug(DEBUG_IRQ, "intr: 0x%x (fw_rx_counter = %d, "
784 "drv_rx_counter = %d, tx_results_counter = %d)",
785 status->intr,
786 status->fw_rx_counter,
787 status->drv_rx_counter,
788 status->tx_results_counter);
789
790 for (i = 0; i < NUM_TX_QUEUES; i++) {
791 /* prevent wrap-around in freed-packets counter */
792 wl->tx_allocated_pkts[i] -=
793 (status->tx_released_pkts[i] -
794 wl->tx_pkts_freed[i]) & 0xff;
795
796 wl->tx_pkts_freed[i] = status->tx_released_pkts[i];
797 }
798
799 /* prevent wrap-around in total blocks counter */
800 if (likely(wl->tx_blocks_freed <=
801 le32_to_cpu(status->total_released_blks)))
802 freed_blocks = le32_to_cpu(status->total_released_blks) -
803 wl->tx_blocks_freed;
804 else
805 freed_blocks = 0x100000000LL - wl->tx_blocks_freed +
806 le32_to_cpu(status->total_released_blks);
807
808 wl->tx_blocks_freed = le32_to_cpu(status->total_released_blks);
809
810 wl->tx_allocated_blocks -= freed_blocks;
811
812 avail = le32_to_cpu(status->tx_total) - wl->tx_allocated_blocks;
813
814 /*
815 * The FW might change the total number of TX memblocks before
816 * we get a notification about blocks being released. Thus, the
817 * available blocks calculation might yield a temporary result
818 * which is lower than the actual available blocks. Keeping in
819 * mind that only blocks that were allocated can be moved from
820 * TX to RX, tx_blocks_available should never decrease here.
821 */
822 wl->tx_blocks_available = max((int)wl->tx_blocks_available,
823 avail);
824
825 /* if more blocks are available now, tx work can be scheduled */
826 if (wl->tx_blocks_available > old_tx_blk_count)
827 clear_bit(WL1271_FLAG_FW_TX_BUSY, &wl->flags);
828
829 /* for AP update num of allocated TX blocks per link and ps status */
830 wl12xx_for_each_wlvif_ap(wl, wlvif) {
831 wl12xx_irq_update_links_status(wl, wlvif, status);
832 }
833
834 /* update the host-chipset time offset */
835 getnstimeofday(&ts);
836 wl->time_offset = (timespec_to_ns(&ts) >> 10) -
837 (s64)le32_to_cpu(status->fw_localtime);
838 }
839
840 static void wl1271_flush_deferred_work(struct wl1271 *wl)
841 {
842 struct sk_buff *skb;
843
844 /* Pass all received frames to the network stack */
845 while ((skb = skb_dequeue(&wl->deferred_rx_queue)))
846 ieee80211_rx_ni(wl->hw, skb);
847
848 /* Return sent skbs to the network stack */
849 while ((skb = skb_dequeue(&wl->deferred_tx_queue)))
850 ieee80211_tx_status_ni(wl->hw, skb);
851 }
852
853 static void wl1271_netstack_work(struct work_struct *work)
854 {
855 struct wl1271 *wl =
856 container_of(work, struct wl1271, netstack_work);
857
858 do {
859 wl1271_flush_deferred_work(wl);
860 } while (skb_queue_len(&wl->deferred_rx_queue));
861 }
862
863 #define WL1271_IRQ_MAX_LOOPS 256
864
865 static irqreturn_t wl1271_irq(int irq, void *cookie)
866 {
867 int ret;
868 u32 intr;
869 int loopcount = WL1271_IRQ_MAX_LOOPS;
870 struct wl1271 *wl = (struct wl1271 *)cookie;
871 bool done = false;
872 unsigned int defer_count;
873 unsigned long flags;
874
875 /* TX might be handled here, avoid redundant work */
876 set_bit(WL1271_FLAG_TX_PENDING, &wl->flags);
877 cancel_work_sync(&wl->tx_work);
878
879 /*
880 * In case edge triggered interrupt must be used, we cannot iterate
881 * more than once without introducing race conditions with the hardirq.
882 */
883 if (wl->platform_quirks & WL12XX_PLATFORM_QUIRK_EDGE_IRQ)
884 loopcount = 1;
885
886 mutex_lock(&wl->mutex);
887
888 wl1271_debug(DEBUG_IRQ, "IRQ work");
889
890 if (unlikely(wl->state == WL1271_STATE_OFF))
891 goto out;
892
893 ret = wl1271_ps_elp_wakeup(wl);
894 if (ret < 0)
895 goto out;
896
897 while (!done && loopcount--) {
898 /*
899 * In order to avoid a race with the hardirq, clear the flag
900 * before acknowledging the chip. Since the mutex is held,
901 * wl1271_ps_elp_wakeup cannot be called concurrently.
902 */
903 clear_bit(WL1271_FLAG_IRQ_RUNNING, &wl->flags);
904 smp_mb__after_clear_bit();
905
906 wl12xx_fw_status(wl, wl->fw_status);
907 intr = le32_to_cpu(wl->fw_status->intr);
908 intr &= WL1271_INTR_MASK;
909 if (!intr) {
910 done = true;
911 continue;
912 }
913
914 if (unlikely(intr & WL1271_ACX_INTR_WATCHDOG)) {
915 wl1271_error("watchdog interrupt received! "
916 "starting recovery.");
917 wl12xx_queue_recovery_work(wl);
918
919 /* restarting the chip. ignore any other interrupt. */
920 goto out;
921 }
922
923 if (likely(intr & WL1271_ACX_INTR_DATA)) {
924 wl1271_debug(DEBUG_IRQ, "WL1271_ACX_INTR_DATA");
925
926 wl12xx_rx(wl, wl->fw_status);
927
928 /* Check if any tx blocks were freed */
929 spin_lock_irqsave(&wl->wl_lock, flags);
930 if (!test_bit(WL1271_FLAG_FW_TX_BUSY, &wl->flags) &&
931 wl1271_tx_total_queue_count(wl) > 0) {
932 spin_unlock_irqrestore(&wl->wl_lock, flags);
933 /*
934 * In order to avoid starvation of the TX path,
935 * call the work function directly.
936 */
937 wl1271_tx_work_locked(wl);
938 } else {
939 spin_unlock_irqrestore(&wl->wl_lock, flags);
940 }
941
942 /* check for tx results */
943 if (wl->fw_status->tx_results_counter !=
944 (wl->tx_results_count & 0xff))
945 wl1271_tx_complete(wl);
946
947 /* Make sure the deferred queues don't get too long */
948 defer_count = skb_queue_len(&wl->deferred_tx_queue) +
949 skb_queue_len(&wl->deferred_rx_queue);
950 if (defer_count > WL1271_DEFERRED_QUEUE_LIMIT)
951 wl1271_flush_deferred_work(wl);
952 }
953
954 if (intr & WL1271_ACX_INTR_EVENT_A) {
955 wl1271_debug(DEBUG_IRQ, "WL1271_ACX_INTR_EVENT_A");
956 wl1271_event_handle(wl, 0);
957 }
958
959 if (intr & WL1271_ACX_INTR_EVENT_B) {
960 wl1271_debug(DEBUG_IRQ, "WL1271_ACX_INTR_EVENT_B");
961 wl1271_event_handle(wl, 1);
962 }
963
964 if (intr & WL1271_ACX_INTR_INIT_COMPLETE)
965 wl1271_debug(DEBUG_IRQ,
966 "WL1271_ACX_INTR_INIT_COMPLETE");
967
968 if (intr & WL1271_ACX_INTR_HW_AVAILABLE)
969 wl1271_debug(DEBUG_IRQ, "WL1271_ACX_INTR_HW_AVAILABLE");
970 }
971
972 wl1271_ps_elp_sleep(wl);
973
974 out:
975 spin_lock_irqsave(&wl->wl_lock, flags);
976 /* In case TX was not handled here, queue TX work */
977 clear_bit(WL1271_FLAG_TX_PENDING, &wl->flags);
978 if (!test_bit(WL1271_FLAG_FW_TX_BUSY, &wl->flags) &&
979 wl1271_tx_total_queue_count(wl) > 0)
980 ieee80211_queue_work(wl->hw, &wl->tx_work);
981 spin_unlock_irqrestore(&wl->wl_lock, flags);
982
983 mutex_unlock(&wl->mutex);
984
985 return IRQ_HANDLED;
986 }
987
988 static int wl1271_fetch_firmware(struct wl1271 *wl)
989 {
990 const struct firmware *fw;
991 const char *fw_name;
992 int ret;
993
994 if (wl->chip.id == CHIP_ID_1283_PG20)
995 fw_name = WL128X_FW_NAME;
996 else
997 fw_name = WL127X_FW_NAME;
998
999 wl1271_debug(DEBUG_BOOT, "booting firmware %s", fw_name);
1000
1001 ret = request_firmware(&fw, fw_name, wl->dev);
1002
1003 if (ret < 0) {
1004 wl1271_error("could not get firmware %s: %d", fw_name, ret);
1005 return ret;
1006 }
1007
1008 if (fw->size % 4) {
1009 wl1271_error("firmware size is not multiple of 32 bits: %zu",
1010 fw->size);
1011 ret = -EILSEQ;
1012 goto out;
1013 }
1014
1015 vfree(wl->fw);
1016 wl->fw_len = fw->size;
1017 wl->fw = vmalloc(wl->fw_len);
1018
1019 if (!wl->fw) {
1020 wl1271_error("could not allocate memory for the firmware");
1021 ret = -ENOMEM;
1022 goto out;
1023 }
1024
1025 memcpy(wl->fw, fw->data, wl->fw_len);
1026 ret = 0;
1027
1028 out:
1029 release_firmware(fw);
1030
1031 return ret;
1032 }
1033
1034 static int wl1271_fetch_nvs(struct wl1271 *wl)
1035 {
1036 const struct firmware *fw;
1037 int ret;
1038
1039 ret = request_firmware(&fw, WL12XX_NVS_NAME, wl->dev);
1040
1041 if (ret < 0) {
1042 wl1271_error("could not get nvs file %s: %d", WL12XX_NVS_NAME,
1043 ret);
1044 return ret;
1045 }
1046
1047 wl->nvs = kmemdup(fw->data, fw->size, GFP_KERNEL);
1048
1049 if (!wl->nvs) {
1050 wl1271_error("could not allocate memory for the nvs file");
1051 ret = -ENOMEM;
1052 goto out;
1053 }
1054
1055 wl->nvs_len = fw->size;
1056
1057 out:
1058 release_firmware(fw);
1059
1060 return ret;
1061 }
1062
1063 void wl12xx_queue_recovery_work(struct wl1271 *wl)
1064 {
1065 if (!test_bit(WL1271_FLAG_RECOVERY_IN_PROGRESS, &wl->flags))
1066 ieee80211_queue_work(wl->hw, &wl->recovery_work);
1067 }
1068
1069 size_t wl12xx_copy_fwlog(struct wl1271 *wl, u8 *memblock, size_t maxlen)
1070 {
1071 size_t len = 0;
1072
1073 /* The FW log is a length-value list, find where the log end */
1074 while (len < maxlen) {
1075 if (memblock[len] == 0)
1076 break;
1077 if (len + memblock[len] + 1 > maxlen)
1078 break;
1079 len += memblock[len] + 1;
1080 }
1081
1082 /* Make sure we have enough room */
1083 len = min(len, (size_t)(PAGE_SIZE - wl->fwlog_size));
1084
1085 /* Fill the FW log file, consumed by the sysfs fwlog entry */
1086 memcpy(wl->fwlog + wl->fwlog_size, memblock, len);
1087 wl->fwlog_size += len;
1088
1089 return len;
1090 }
1091
1092 static void wl12xx_read_fwlog_panic(struct wl1271 *wl)
1093 {
1094 u32 addr;
1095 u32 first_addr;
1096 u8 *block;
1097
1098 if ((wl->quirks & WL12XX_QUIRK_FWLOG_NOT_IMPLEMENTED) ||
1099 (wl->conf.fwlog.mode != WL12XX_FWLOG_ON_DEMAND) ||
1100 (wl->conf.fwlog.mem_blocks == 0))
1101 return;
1102
1103 wl1271_info("Reading FW panic log");
1104
1105 block = kmalloc(WL12XX_HW_BLOCK_SIZE, GFP_KERNEL);
1106 if (!block)
1107 return;
1108
1109 /*
1110 * Make sure the chip is awake and the logger isn't active.
1111 * This might fail if the firmware hanged.
1112 */
1113 if (!wl1271_ps_elp_wakeup(wl))
1114 wl12xx_cmd_stop_fwlog(wl);
1115
1116 /* Read the first memory block address */
1117 wl12xx_fw_status(wl, wl->fw_status);
1118 first_addr = le32_to_cpu(wl->fw_status->log_start_addr);
1119 if (!first_addr)
1120 goto out;
1121
1122 /* Traverse the memory blocks linked list */
1123 addr = first_addr;
1124 do {
1125 memset(block, 0, WL12XX_HW_BLOCK_SIZE);
1126 wl1271_read_hwaddr(wl, addr, block, WL12XX_HW_BLOCK_SIZE,
1127 false);
1128
1129 /*
1130 * Memory blocks are linked to one another. The first 4 bytes
1131 * of each memory block hold the hardware address of the next
1132 * one. The last memory block points to the first one.
1133 */
1134 addr = le32_to_cpup((__le32 *)block);
1135 if (!wl12xx_copy_fwlog(wl, block + sizeof(addr),
1136 WL12XX_HW_BLOCK_SIZE - sizeof(addr)))
1137 break;
1138 } while (addr && (addr != first_addr));
1139
1140 wake_up_interruptible(&wl->fwlog_waitq);
1141
1142 out:
1143 kfree(block);
1144 }
1145
1146 static void wl1271_recovery_work(struct work_struct *work)
1147 {
1148 struct wl1271 *wl =
1149 container_of(work, struct wl1271, recovery_work);
1150 struct wl12xx_vif *wlvif;
1151 struct ieee80211_vif *vif;
1152
1153 mutex_lock(&wl->mutex);
1154
1155 if (wl->state != WL1271_STATE_ON)
1156 goto out_unlock;
1157
1158 /* Avoid a recursive recovery */
1159 set_bit(WL1271_FLAG_RECOVERY_IN_PROGRESS, &wl->flags);
1160
1161 wl12xx_read_fwlog_panic(wl);
1162
1163 wl1271_info("Hardware recovery in progress. FW ver: %s pc: 0x%x",
1164 wl->chip.fw_ver_str, wl1271_read32(wl, SCR_PAD4));
1165
1166 BUG_ON(bug_on_recovery);
1167
1168 /*
1169 * Advance security sequence number to overcome potential progress
1170 * in the firmware during recovery. This doens't hurt if the network is
1171 * not encrypted.
1172 */
1173 wl12xx_for_each_wlvif(wl, wlvif) {
1174 if (test_bit(WLVIF_FLAG_STA_ASSOCIATED, &wlvif->flags) ||
1175 test_bit(WLVIF_FLAG_AP_STARTED, &wlvif->flags))
1176 wlvif->tx_security_seq +=
1177 WL1271_TX_SQN_POST_RECOVERY_PADDING;
1178 }
1179
1180 /* Prevent spurious TX during FW restart */
1181 ieee80211_stop_queues(wl->hw);
1182
1183 if (wl->sched_scanning) {
1184 ieee80211_sched_scan_stopped(wl->hw);
1185 wl->sched_scanning = false;
1186 }
1187
1188 /* reboot the chipset */
1189 while (!list_empty(&wl->wlvif_list)) {
1190 wlvif = list_first_entry(&wl->wlvif_list,
1191 struct wl12xx_vif, list);
1192 vif = wl12xx_wlvif_to_vif(wlvif);
1193 __wl1271_op_remove_interface(wl, vif, false);
1194 }
1195 mutex_unlock(&wl->mutex);
1196 wl1271_op_stop(wl->hw);
1197
1198 clear_bit(WL1271_FLAG_RECOVERY_IN_PROGRESS, &wl->flags);
1199
1200 ieee80211_restart_hw(wl->hw);
1201
1202 /*
1203 * Its safe to enable TX now - the queues are stopped after a request
1204 * to restart the HW.
1205 */
1206 ieee80211_wake_queues(wl->hw);
1207 return;
1208 out_unlock:
1209 mutex_unlock(&wl->mutex);
1210 }
1211
1212 static void wl1271_fw_wakeup(struct wl1271 *wl)
1213 {
1214 u32 elp_reg;
1215
1216 elp_reg = ELPCTRL_WAKE_UP;
1217 wl1271_raw_write32(wl, HW_ACCESS_ELP_CTRL_REG_ADDR, elp_reg);
1218 }
1219
1220 static int wl1271_setup(struct wl1271 *wl)
1221 {
1222 wl->fw_status = kmalloc(sizeof(*wl->fw_status), GFP_KERNEL);
1223 if (!wl->fw_status)
1224 return -ENOMEM;
1225
1226 wl->tx_res_if = kmalloc(sizeof(*wl->tx_res_if), GFP_KERNEL);
1227 if (!wl->tx_res_if) {
1228 kfree(wl->fw_status);
1229 return -ENOMEM;
1230 }
1231
1232 return 0;
1233 }
1234
1235 static int wl1271_chip_wakeup(struct wl1271 *wl)
1236 {
1237 struct wl1271_partition_set partition;
1238 int ret = 0;
1239
1240 msleep(WL1271_PRE_POWER_ON_SLEEP);
1241 ret = wl1271_power_on(wl);
1242 if (ret < 0)
1243 goto out;
1244 msleep(WL1271_POWER_ON_SLEEP);
1245 wl1271_io_reset(wl);
1246 wl1271_io_init(wl);
1247
1248 /* We don't need a real memory partition here, because we only want
1249 * to use the registers at this point. */
1250 memset(&partition, 0, sizeof(partition));
1251 partition.reg.start = REGISTERS_BASE;
1252 partition.reg.size = REGISTERS_DOWN_SIZE;
1253 wl1271_set_partition(wl, &partition);
1254
1255 /* ELP module wake up */
1256 wl1271_fw_wakeup(wl);
1257
1258 /* whal_FwCtrl_BootSm() */
1259
1260 /* 0. read chip id from CHIP_ID */
1261 wl->chip.id = wl1271_read32(wl, CHIP_ID_B);
1262
1263 /*
1264 * For wl127x based devices we could use the default block
1265 * size (512 bytes), but due to a bug in the sdio driver, we
1266 * need to set it explicitly after the chip is powered on. To
1267 * simplify the code and since the performance impact is
1268 * negligible, we use the same block size for all different
1269 * chip types.
1270 */
1271 if (!wl1271_set_block_size(wl))
1272 wl->quirks |= WL12XX_QUIRK_NO_BLOCKSIZE_ALIGNMENT;
1273
1274 switch (wl->chip.id) {
1275 case CHIP_ID_1271_PG10:
1276 wl1271_warning("chip id 0x%x (1271 PG10) support is obsolete",
1277 wl->chip.id);
1278
1279 ret = wl1271_setup(wl);
1280 if (ret < 0)
1281 goto out;
1282 wl->quirks |= WL12XX_QUIRK_NO_BLOCKSIZE_ALIGNMENT;
1283 break;
1284
1285 case CHIP_ID_1271_PG20:
1286 wl1271_debug(DEBUG_BOOT, "chip id 0x%x (1271 PG20)",
1287 wl->chip.id);
1288
1289 ret = wl1271_setup(wl);
1290 if (ret < 0)
1291 goto out;
1292 wl->quirks |= WL12XX_QUIRK_NO_BLOCKSIZE_ALIGNMENT;
1293 break;
1294
1295 case CHIP_ID_1283_PG20:
1296 wl1271_debug(DEBUG_BOOT, "chip id 0x%x (1283 PG20)",
1297 wl->chip.id);
1298
1299 ret = wl1271_setup(wl);
1300 if (ret < 0)
1301 goto out;
1302 break;
1303 case CHIP_ID_1283_PG10:
1304 default:
1305 wl1271_warning("unsupported chip id: 0x%x", wl->chip.id);
1306 ret = -ENODEV;
1307 goto out;
1308 }
1309
1310 if (wl->fw == NULL) {
1311 ret = wl1271_fetch_firmware(wl);
1312 if (ret < 0)
1313 goto out;
1314 }
1315
1316 /* No NVS from netlink, try to get it from the filesystem */
1317 if (wl->nvs == NULL) {
1318 ret = wl1271_fetch_nvs(wl);
1319 if (ret < 0)
1320 goto out;
1321 }
1322
1323 out:
1324 return ret;
1325 }
1326
1327 int wl1271_plt_start(struct wl1271 *wl)
1328 {
1329 int retries = WL1271_BOOT_RETRIES;
1330 struct wiphy *wiphy = wl->hw->wiphy;
1331 int ret;
1332
1333 mutex_lock(&wl->mutex);
1334
1335 wl1271_notice("power up");
1336
1337 if (wl->state != WL1271_STATE_OFF) {
1338 wl1271_error("cannot go into PLT state because not "
1339 "in off state: %d", wl->state);
1340 ret = -EBUSY;
1341 goto out;
1342 }
1343
1344 while (retries) {
1345 retries--;
1346 ret = wl1271_chip_wakeup(wl);
1347 if (ret < 0)
1348 goto power_off;
1349
1350 ret = wl1271_boot(wl);
1351 if (ret < 0)
1352 goto power_off;
1353
1354 ret = wl1271_plt_init(wl);
1355 if (ret < 0)
1356 goto irq_disable;
1357
1358 wl->state = WL1271_STATE_PLT;
1359 wl1271_notice("firmware booted in PLT mode (%s)",
1360 wl->chip.fw_ver_str);
1361
1362 /* update hw/fw version info in wiphy struct */
1363 wiphy->hw_version = wl->chip.id;
1364 strncpy(wiphy->fw_version, wl->chip.fw_ver_str,
1365 sizeof(wiphy->fw_version));
1366
1367 goto out;
1368
1369 irq_disable:
1370 mutex_unlock(&wl->mutex);
1371 /* Unlocking the mutex in the middle of handling is
1372 inherently unsafe. In this case we deem it safe to do,
1373 because we need to let any possibly pending IRQ out of
1374 the system (and while we are WL1271_STATE_OFF the IRQ
1375 work function will not do anything.) Also, any other
1376 possible concurrent operations will fail due to the
1377 current state, hence the wl1271 struct should be safe. */
1378 wl1271_disable_interrupts(wl);
1379 wl1271_flush_deferred_work(wl);
1380 cancel_work_sync(&wl->netstack_work);
1381 mutex_lock(&wl->mutex);
1382 power_off:
1383 wl1271_power_off(wl);
1384 }
1385
1386 wl1271_error("firmware boot in PLT mode failed despite %d retries",
1387 WL1271_BOOT_RETRIES);
1388 out:
1389 mutex_unlock(&wl->mutex);
1390
1391 return ret;
1392 }
1393
1394 static int __wl1271_plt_stop(struct wl1271 *wl)
1395 {
1396 int ret = 0;
1397
1398 wl1271_notice("power down");
1399
1400 if (wl->state != WL1271_STATE_PLT) {
1401 wl1271_error("cannot power down because not in PLT "
1402 "state: %d", wl->state);
1403 ret = -EBUSY;
1404 goto out;
1405 }
1406
1407 wl1271_power_off(wl);
1408
1409 wl->state = WL1271_STATE_OFF;
1410 wl->rx_counter = 0;
1411
1412 mutex_unlock(&wl->mutex);
1413 wl1271_disable_interrupts(wl);
1414 wl1271_flush_deferred_work(wl);
1415 cancel_work_sync(&wl->netstack_work);
1416 cancel_work_sync(&wl->recovery_work);
1417 mutex_lock(&wl->mutex);
1418 out:
1419 return ret;
1420 }
1421
1422 int wl1271_plt_stop(struct wl1271 *wl)
1423 {
1424 int ret;
1425
1426 mutex_lock(&wl->mutex);
1427 ret = __wl1271_plt_stop(wl);
1428 mutex_unlock(&wl->mutex);
1429 return ret;
1430 }
1431
1432 static void wl1271_op_tx(struct ieee80211_hw *hw, struct sk_buff *skb)
1433 {
1434 struct wl1271 *wl = hw->priv;
1435 struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb);
1436 struct ieee80211_vif *vif = info->control.vif;
1437 struct wl12xx_vif *wlvif = NULL;
1438 unsigned long flags;
1439 int q, mapping;
1440 u8 hlid;
1441
1442 if (vif)
1443 wlvif = wl12xx_vif_to_data(vif);
1444
1445 mapping = skb_get_queue_mapping(skb);
1446 q = wl1271_tx_get_queue(mapping);
1447
1448 hlid = wl12xx_tx_get_hlid(wl, wlvif, skb);
1449
1450 spin_lock_irqsave(&wl->wl_lock, flags);
1451
1452 /* queue the packet */
1453 if (hlid == WL12XX_INVALID_LINK_ID ||
1454 (wlvif && !test_bit(hlid, wlvif->links_map))) {
1455 wl1271_debug(DEBUG_TX, "DROP skb hlid %d q %d", hlid, q);
1456 ieee80211_free_txskb(hw, skb);
1457 goto out;
1458 }
1459
1460 wl1271_debug(DEBUG_TX, "queue skb hlid %d q %d", hlid, q);
1461 skb_queue_tail(&wl->links[hlid].tx_queue[q], skb);
1462
1463 wl->tx_queue_count[q]++;
1464
1465 /*
1466 * The workqueue is slow to process the tx_queue and we need stop
1467 * the queue here, otherwise the queue will get too long.
1468 */
1469 if (wl->tx_queue_count[q] >= WL1271_TX_QUEUE_HIGH_WATERMARK) {
1470 wl1271_debug(DEBUG_TX, "op_tx: stopping queues for q %d", q);
1471 ieee80211_stop_queue(wl->hw, mapping);
1472 set_bit(q, &wl->stopped_queues_map);
1473 }
1474
1475 /*
1476 * The chip specific setup must run before the first TX packet -
1477 * before that, the tx_work will not be initialized!
1478 */
1479
1480 if (!test_bit(WL1271_FLAG_FW_TX_BUSY, &wl->flags) &&
1481 !test_bit(WL1271_FLAG_TX_PENDING, &wl->flags))
1482 ieee80211_queue_work(wl->hw, &wl->tx_work);
1483
1484 out:
1485 spin_unlock_irqrestore(&wl->wl_lock, flags);
1486 }
1487
1488 int wl1271_tx_dummy_packet(struct wl1271 *wl)
1489 {
1490 unsigned long flags;
1491 int q;
1492
1493 /* no need to queue a new dummy packet if one is already pending */
1494 if (test_bit(WL1271_FLAG_DUMMY_PACKET_PENDING, &wl->flags))
1495 return 0;
1496
1497 q = wl1271_tx_get_queue(skb_get_queue_mapping(wl->dummy_packet));
1498
1499 spin_lock_irqsave(&wl->wl_lock, flags);
1500 set_bit(WL1271_FLAG_DUMMY_PACKET_PENDING, &wl->flags);
1501 wl->tx_queue_count[q]++;
1502 spin_unlock_irqrestore(&wl->wl_lock, flags);
1503
1504 /* The FW is low on RX memory blocks, so send the dummy packet asap */
1505 if (!test_bit(WL1271_FLAG_FW_TX_BUSY, &wl->flags))
1506 wl1271_tx_work_locked(wl);
1507
1508 /*
1509 * If the FW TX is busy, TX work will be scheduled by the threaded
1510 * interrupt handler function
1511 */
1512 return 0;
1513 }
1514
1515 /*
1516 * The size of the dummy packet should be at least 1400 bytes. However, in
1517 * order to minimize the number of bus transactions, aligning it to 512 bytes
1518 * boundaries could be beneficial, performance wise
1519 */
1520 #define TOTAL_TX_DUMMY_PACKET_SIZE (ALIGN(1400, 512))
1521
1522 static struct sk_buff *wl12xx_alloc_dummy_packet(struct wl1271 *wl)
1523 {
1524 struct sk_buff *skb;
1525 struct ieee80211_hdr_3addr *hdr;
1526 unsigned int dummy_packet_size;
1527
1528 dummy_packet_size = TOTAL_TX_DUMMY_PACKET_SIZE -
1529 sizeof(struct wl1271_tx_hw_descr) - sizeof(*hdr);
1530
1531 skb = dev_alloc_skb(TOTAL_TX_DUMMY_PACKET_SIZE);
1532 if (!skb) {
1533 wl1271_warning("Failed to allocate a dummy packet skb");
1534 return NULL;
1535 }
1536
1537 skb_reserve(skb, sizeof(struct wl1271_tx_hw_descr));
1538
1539 hdr = (struct ieee80211_hdr_3addr *) skb_put(skb, sizeof(*hdr));
1540 memset(hdr, 0, sizeof(*hdr));
1541 hdr->frame_control = cpu_to_le16(IEEE80211_FTYPE_DATA |
1542 IEEE80211_STYPE_NULLFUNC |
1543 IEEE80211_FCTL_TODS);
1544
1545 memset(skb_put(skb, dummy_packet_size), 0, dummy_packet_size);
1546
1547 /* Dummy packets require the TID to be management */
1548 skb->priority = WL1271_TID_MGMT;
1549
1550 /* Initialize all fields that might be used */
1551 skb_set_queue_mapping(skb, 0);
1552 memset(IEEE80211_SKB_CB(skb), 0, sizeof(struct ieee80211_tx_info));
1553
1554 return skb;
1555 }
1556
1557
1558 static struct notifier_block wl1271_dev_notifier = {
1559 .notifier_call = wl1271_dev_notify,
1560 };
1561
1562 #ifdef CONFIG_PM
1563 static int wl1271_configure_suspend_sta(struct wl1271 *wl,
1564 struct wl12xx_vif *wlvif)
1565 {
1566 int ret = 0;
1567
1568 mutex_lock(&wl->mutex);
1569
1570 if (!test_bit(WLVIF_FLAG_STA_ASSOCIATED, &wlvif->flags))
1571 goto out_unlock;
1572
1573 ret = wl1271_ps_elp_wakeup(wl);
1574 if (ret < 0)
1575 goto out_unlock;
1576
1577 /* enter psm if needed*/
1578 if (!test_bit(WLVIF_FLAG_PSM, &wlvif->flags)) {
1579 DECLARE_COMPLETION_ONSTACK(compl);
1580
1581 wlvif->ps_compl = &compl;
1582 ret = wl1271_ps_set_mode(wl, wlvif, STATION_POWER_SAVE_MODE,
1583 wlvif->basic_rate, true);
1584 if (ret < 0)
1585 goto out_sleep;
1586
1587 /* we must unlock here so we will be able to get events */
1588 wl1271_ps_elp_sleep(wl);
1589 mutex_unlock(&wl->mutex);
1590
1591 ret = wait_for_completion_timeout(
1592 &compl, msecs_to_jiffies(WL1271_PS_COMPLETE_TIMEOUT));
1593
1594 mutex_lock(&wl->mutex);
1595 if (ret <= 0) {
1596 wl1271_warning("couldn't enter ps mode!");
1597 ret = -EBUSY;
1598 goto out_cleanup;
1599 }
1600
1601 ret = wl1271_ps_elp_wakeup(wl);
1602 if (ret < 0)
1603 goto out_cleanup;
1604 }
1605 out_sleep:
1606 wl1271_ps_elp_sleep(wl);
1607 out_cleanup:
1608 wlvif->ps_compl = NULL;
1609 out_unlock:
1610 mutex_unlock(&wl->mutex);
1611 return ret;
1612
1613 }
1614
1615 static int wl1271_configure_suspend_ap(struct wl1271 *wl,
1616 struct wl12xx_vif *wlvif)
1617 {
1618 int ret = 0;
1619
1620 mutex_lock(&wl->mutex);
1621
1622 if (!test_bit(WLVIF_FLAG_AP_STARTED, &wlvif->flags))
1623 goto out_unlock;
1624
1625 ret = wl1271_ps_elp_wakeup(wl);
1626 if (ret < 0)
1627 goto out_unlock;
1628
1629 ret = wl1271_acx_beacon_filter_opt(wl, wlvif, true);
1630
1631 wl1271_ps_elp_sleep(wl);
1632 out_unlock:
1633 mutex_unlock(&wl->mutex);
1634 return ret;
1635
1636 }
1637
1638 static int wl1271_configure_suspend(struct wl1271 *wl,
1639 struct wl12xx_vif *wlvif)
1640 {
1641 if (wlvif->bss_type == BSS_TYPE_STA_BSS)
1642 return wl1271_configure_suspend_sta(wl, wlvif);
1643 if (wlvif->bss_type == BSS_TYPE_AP_BSS)
1644 return wl1271_configure_suspend_ap(wl, wlvif);
1645 return 0;
1646 }
1647
1648 static void wl1271_configure_resume(struct wl1271 *wl,
1649 struct wl12xx_vif *wlvif)
1650 {
1651 int ret;
1652 bool is_sta = wlvif->bss_type == BSS_TYPE_STA_BSS;
1653 bool is_ap = wlvif->bss_type == BSS_TYPE_AP_BSS;
1654
1655 if (!is_sta && !is_ap)
1656 return;
1657
1658 mutex_lock(&wl->mutex);
1659 ret = wl1271_ps_elp_wakeup(wl);
1660 if (ret < 0)
1661 goto out;
1662
1663 if (is_sta) {
1664 /* exit psm if it wasn't configured */
1665 if (!test_bit(WLVIF_FLAG_PSM_REQUESTED, &wlvif->flags))
1666 wl1271_ps_set_mode(wl, wlvif, STATION_ACTIVE_MODE,
1667 wlvif->basic_rate, true);
1668 } else if (is_ap) {
1669 wl1271_acx_beacon_filter_opt(wl, wlvif, false);
1670 }
1671
1672 wl1271_ps_elp_sleep(wl);
1673 out:
1674 mutex_unlock(&wl->mutex);
1675 }
1676
1677 static int wl1271_op_suspend(struct ieee80211_hw *hw,
1678 struct cfg80211_wowlan *wow)
1679 {
1680 struct wl1271 *wl = hw->priv;
1681 struct wl12xx_vif *wlvif;
1682 int ret;
1683
1684 wl1271_debug(DEBUG_MAC80211, "mac80211 suspend wow=%d", !!wow);
1685 WARN_ON(!wow || !wow->any);
1686
1687 wl->wow_enabled = true;
1688 wl12xx_for_each_wlvif(wl, wlvif) {
1689 ret = wl1271_configure_suspend(wl, wlvif);
1690 if (ret < 0) {
1691 wl1271_warning("couldn't prepare device to suspend");
1692 return ret;
1693 }
1694 }
1695 /* flush any remaining work */
1696 wl1271_debug(DEBUG_MAC80211, "flushing remaining works");
1697
1698 /*
1699 * disable and re-enable interrupts in order to flush
1700 * the threaded_irq
1701 */
1702 wl1271_disable_interrupts(wl);
1703
1704 /*
1705 * set suspended flag to avoid triggering a new threaded_irq
1706 * work. no need for spinlock as interrupts are disabled.
1707 */
1708 set_bit(WL1271_FLAG_SUSPENDED, &wl->flags);
1709
1710 wl1271_enable_interrupts(wl);
1711 flush_work(&wl->tx_work);
1712 wl12xx_for_each_wlvif(wl, wlvif) {
1713 flush_delayed_work(&wlvif->pspoll_work);
1714 }
1715 flush_delayed_work(&wl->elp_work);
1716
1717 return 0;
1718 }
1719
1720 static int wl1271_op_resume(struct ieee80211_hw *hw)
1721 {
1722 struct wl1271 *wl = hw->priv;
1723 struct wl12xx_vif *wlvif;
1724 unsigned long flags;
1725 bool run_irq_work = false;
1726
1727 wl1271_debug(DEBUG_MAC80211, "mac80211 resume wow=%d",
1728 wl->wow_enabled);
1729 WARN_ON(!wl->wow_enabled);
1730
1731 /*
1732 * re-enable irq_work enqueuing, and call irq_work directly if
1733 * there is a pending work.
1734 */
1735 spin_lock_irqsave(&wl->wl_lock, flags);
1736 clear_bit(WL1271_FLAG_SUSPENDED, &wl->flags);
1737 if (test_and_clear_bit(WL1271_FLAG_PENDING_WORK, &wl->flags))
1738 run_irq_work = true;
1739 spin_unlock_irqrestore(&wl->wl_lock, flags);
1740
1741 if (run_irq_work) {
1742 wl1271_debug(DEBUG_MAC80211,
1743 "run postponed irq_work directly");
1744 wl1271_irq(0, wl);
1745 wl1271_enable_interrupts(wl);
1746 }
1747 wl12xx_for_each_wlvif(wl, wlvif) {
1748 wl1271_configure_resume(wl, wlvif);
1749 }
1750 wl->wow_enabled = false;
1751
1752 return 0;
1753 }
1754 #endif
1755
1756 static int wl1271_op_start(struct ieee80211_hw *hw)
1757 {
1758 wl1271_debug(DEBUG_MAC80211, "mac80211 start");
1759
1760 /*
1761 * We have to delay the booting of the hardware because
1762 * we need to know the local MAC address before downloading and
1763 * initializing the firmware. The MAC address cannot be changed
1764 * after boot, and without the proper MAC address, the firmware
1765 * will not function properly.
1766 *
1767 * The MAC address is first known when the corresponding interface
1768 * is added. That is where we will initialize the hardware.
1769 */
1770
1771 return 0;
1772 }
1773
1774 static void wl1271_op_stop(struct ieee80211_hw *hw)
1775 {
1776 struct wl1271 *wl = hw->priv;
1777 int i;
1778
1779 wl1271_debug(DEBUG_MAC80211, "mac80211 stop");
1780
1781 mutex_lock(&wl->mutex);
1782 if (wl->state == WL1271_STATE_OFF) {
1783 mutex_unlock(&wl->mutex);
1784 return;
1785 }
1786 /*
1787 * this must be before the cancel_work calls below, so that the work
1788 * functions don't perform further work.
1789 */
1790 wl->state = WL1271_STATE_OFF;
1791 mutex_unlock(&wl->mutex);
1792
1793 mutex_lock(&wl_list_mutex);
1794 list_del(&wl->list);
1795 mutex_unlock(&wl_list_mutex);
1796
1797 wl1271_disable_interrupts(wl);
1798 wl1271_flush_deferred_work(wl);
1799 cancel_delayed_work_sync(&wl->scan_complete_work);
1800 cancel_work_sync(&wl->netstack_work);
1801 cancel_work_sync(&wl->tx_work);
1802 cancel_delayed_work_sync(&wl->elp_work);
1803
1804 /* let's notify MAC80211 about the remaining pending TX frames */
1805 wl12xx_tx_reset(wl, true);
1806 mutex_lock(&wl->mutex);
1807
1808 wl1271_power_off(wl);
1809
1810 wl->band = IEEE80211_BAND_2GHZ;
1811
1812 wl->rx_counter = 0;
1813 wl->power_level = WL1271_DEFAULT_POWER_LEVEL;
1814 wl->tx_blocks_available = 0;
1815 wl->tx_allocated_blocks = 0;
1816 wl->tx_results_count = 0;
1817 wl->tx_packets_count = 0;
1818 wl->time_offset = 0;
1819 wl->tx_spare_blocks = TX_HW_BLOCK_SPARE_DEFAULT;
1820 wl->ap_fw_ps_map = 0;
1821 wl->ap_ps_map = 0;
1822 wl->sched_scanning = false;
1823 memset(wl->roles_map, 0, sizeof(wl->roles_map));
1824 memset(wl->links_map, 0, sizeof(wl->links_map));
1825 memset(wl->roc_map, 0, sizeof(wl->roc_map));
1826 wl->active_sta_count = 0;
1827
1828 /* The system link is always allocated */
1829 __set_bit(WL12XX_SYSTEM_HLID, wl->links_map);
1830
1831 /*
1832 * this is performed after the cancel_work calls and the associated
1833 * mutex_lock, so that wl1271_op_add_interface does not accidentally
1834 * get executed before all these vars have been reset.
1835 */
1836 wl->flags = 0;
1837
1838 wl->tx_blocks_freed = 0;
1839
1840 for (i = 0; i < NUM_TX_QUEUES; i++) {
1841 wl->tx_pkts_freed[i] = 0;
1842 wl->tx_allocated_pkts[i] = 0;
1843 }
1844
1845 wl1271_debugfs_reset(wl);
1846
1847 kfree(wl->fw_status);
1848 wl->fw_status = NULL;
1849 kfree(wl->tx_res_if);
1850 wl->tx_res_if = NULL;
1851 kfree(wl->target_mem_map);
1852 wl->target_mem_map = NULL;
1853
1854 mutex_unlock(&wl->mutex);
1855 }
1856
1857 static int wl12xx_allocate_rate_policy(struct wl1271 *wl, u8 *idx)
1858 {
1859 u8 policy = find_first_zero_bit(wl->rate_policies_map,
1860 WL12XX_MAX_RATE_POLICIES);
1861 if (policy >= WL12XX_MAX_RATE_POLICIES)
1862 return -EBUSY;
1863
1864 __set_bit(policy, wl->rate_policies_map);
1865 *idx = policy;
1866 return 0;
1867 }
1868
1869 static void wl12xx_free_rate_policy(struct wl1271 *wl, u8 *idx)
1870 {
1871 if (WARN_ON(*idx >= WL12XX_MAX_RATE_POLICIES))
1872 return;
1873
1874 __clear_bit(*idx, wl->rate_policies_map);
1875 *idx = WL12XX_MAX_RATE_POLICIES;
1876 }
1877
1878 static u8 wl12xx_get_role_type(struct wl1271 *wl, struct wl12xx_vif *wlvif)
1879 {
1880 switch (wlvif->bss_type) {
1881 case BSS_TYPE_AP_BSS:
1882 if (wlvif->p2p)
1883 return WL1271_ROLE_P2P_GO;
1884 else
1885 return WL1271_ROLE_AP;
1886
1887 case BSS_TYPE_STA_BSS:
1888 if (wlvif->p2p)
1889 return WL1271_ROLE_P2P_CL;
1890 else
1891 return WL1271_ROLE_STA;
1892
1893 case BSS_TYPE_IBSS:
1894 return WL1271_ROLE_IBSS;
1895
1896 default:
1897 wl1271_error("invalid bss_type: %d", wlvif->bss_type);
1898 }
1899 return WL12XX_INVALID_ROLE_TYPE;
1900 }
1901
1902 static int wl12xx_init_vif_data(struct wl1271 *wl, struct ieee80211_vif *vif)
1903 {
1904 struct wl12xx_vif *wlvif = wl12xx_vif_to_data(vif);
1905 int i;
1906
1907 /* clear everything but the persistent data */
1908 memset(wlvif, 0, offsetof(struct wl12xx_vif, persistent));
1909
1910 switch (ieee80211_vif_type_p2p(vif)) {
1911 case NL80211_IFTYPE_P2P_CLIENT:
1912 wlvif->p2p = 1;
1913 /* fall-through */
1914 case NL80211_IFTYPE_STATION:
1915 wlvif->bss_type = BSS_TYPE_STA_BSS;
1916 break;
1917 case NL80211_IFTYPE_ADHOC:
1918 wlvif->bss_type = BSS_TYPE_IBSS;
1919 break;
1920 case NL80211_IFTYPE_P2P_GO:
1921 wlvif->p2p = 1;
1922 /* fall-through */
1923 case NL80211_IFTYPE_AP:
1924 wlvif->bss_type = BSS_TYPE_AP_BSS;
1925 break;
1926 default:
1927 wlvif->bss_type = MAX_BSS_TYPE;
1928 return -EOPNOTSUPP;
1929 }
1930
1931 wlvif->role_id = WL12XX_INVALID_ROLE_ID;
1932 wlvif->dev_role_id = WL12XX_INVALID_ROLE_ID;
1933 wlvif->dev_hlid = WL12XX_INVALID_LINK_ID;
1934
1935 if (wlvif->bss_type == BSS_TYPE_STA_BSS ||
1936 wlvif->bss_type == BSS_TYPE_IBSS) {
1937 /* init sta/ibss data */
1938 wlvif->sta.hlid = WL12XX_INVALID_LINK_ID;
1939 wl12xx_allocate_rate_policy(wl, &wlvif->sta.basic_rate_idx);
1940 wl12xx_allocate_rate_policy(wl, &wlvif->sta.ap_rate_idx);
1941 wl12xx_allocate_rate_policy(wl, &wlvif->sta.p2p_rate_idx);
1942 } else {
1943 /* init ap data */
1944 wlvif->ap.bcast_hlid = WL12XX_INVALID_LINK_ID;
1945 wlvif->ap.global_hlid = WL12XX_INVALID_LINK_ID;
1946 wl12xx_allocate_rate_policy(wl, &wlvif->ap.mgmt_rate_idx);
1947 wl12xx_allocate_rate_policy(wl, &wlvif->ap.bcast_rate_idx);
1948 for (i = 0; i < CONF_TX_MAX_AC_COUNT; i++)
1949 wl12xx_allocate_rate_policy(wl,
1950 &wlvif->ap.ucast_rate_idx[i]);
1951 }
1952
1953 wlvif->bitrate_masks[IEEE80211_BAND_2GHZ] = wl->conf.tx.basic_rate;
1954 wlvif->bitrate_masks[IEEE80211_BAND_5GHZ] = wl->conf.tx.basic_rate_5;
1955 wlvif->basic_rate_set = CONF_TX_RATE_MASK_BASIC;
1956 wlvif->basic_rate = CONF_TX_RATE_MASK_BASIC;
1957 wlvif->rate_set = CONF_TX_RATE_MASK_BASIC;
1958 wlvif->beacon_int = WL1271_DEFAULT_BEACON_INT;
1959
1960 /*
1961 * mac80211 configures some values globally, while we treat them
1962 * per-interface. thus, on init, we have to copy them from wl
1963 */
1964 wlvif->band = wl->band;
1965 wlvif->channel = wl->channel;
1966 wlvif->power_level = wl->power_level;
1967
1968 INIT_WORK(&wlvif->rx_streaming_enable_work,
1969 wl1271_rx_streaming_enable_work);
1970 INIT_WORK(&wlvif->rx_streaming_disable_work,
1971 wl1271_rx_streaming_disable_work);
1972 INIT_DELAYED_WORK(&wlvif->pspoll_work, wl1271_pspoll_work);
1973 INIT_LIST_HEAD(&wlvif->list);
1974
1975 setup_timer(&wlvif->rx_streaming_timer, wl1271_rx_streaming_timer,
1976 (unsigned long) wlvif);
1977 return 0;
1978 }
1979
1980 static bool wl12xx_init_fw(struct wl1271 *wl)
1981 {
1982 int retries = WL1271_BOOT_RETRIES;
1983 bool booted = false;
1984 struct wiphy *wiphy = wl->hw->wiphy;
1985 int ret;
1986
1987 while (retries) {
1988 retries--;
1989 ret = wl1271_chip_wakeup(wl);
1990 if (ret < 0)
1991 goto power_off;
1992
1993 ret = wl1271_boot(wl);
1994 if (ret < 0)
1995 goto power_off;
1996
1997 ret = wl1271_hw_init(wl);
1998 if (ret < 0)
1999 goto irq_disable;
2000
2001 booted = true;
2002 break;
2003
2004 irq_disable:
2005 mutex_unlock(&wl->mutex);
2006 /* Unlocking the mutex in the middle of handling is
2007 inherently unsafe. In this case we deem it safe to do,
2008 because we need to let any possibly pending IRQ out of
2009 the system (and while we are WL1271_STATE_OFF the IRQ
2010 work function will not do anything.) Also, any other
2011 possible concurrent operations will fail due to the
2012 current state, hence the wl1271 struct should be safe. */
2013 wl1271_disable_interrupts(wl);
2014 wl1271_flush_deferred_work(wl);
2015 cancel_work_sync(&wl->netstack_work);
2016 mutex_lock(&wl->mutex);
2017 power_off:
2018 wl1271_power_off(wl);
2019 }
2020
2021 if (!booted) {
2022 wl1271_error("firmware boot failed despite %d retries",
2023 WL1271_BOOT_RETRIES);
2024 goto out;
2025 }
2026
2027 wl1271_info("firmware booted (%s)", wl->chip.fw_ver_str);
2028
2029 /* update hw/fw version info in wiphy struct */
2030 wiphy->hw_version = wl->chip.id;
2031 strncpy(wiphy->fw_version, wl->chip.fw_ver_str,
2032 sizeof(wiphy->fw_version));
2033
2034 /*
2035 * Now we know if 11a is supported (info from the NVS), so disable
2036 * 11a channels if not supported
2037 */
2038 if (!wl->enable_11a)
2039 wiphy->bands[IEEE80211_BAND_5GHZ]->n_channels = 0;
2040
2041 wl1271_debug(DEBUG_MAC80211, "11a is %ssupported",
2042 wl->enable_11a ? "" : "not ");
2043
2044 wl->state = WL1271_STATE_ON;
2045 out:
2046 return booted;
2047 }
2048
2049 static bool wl12xx_dev_role_started(struct wl12xx_vif *wlvif)
2050 {
2051 return wlvif->dev_hlid != WL12XX_INVALID_LINK_ID;
2052 }
2053
2054 static int wl1271_op_add_interface(struct ieee80211_hw *hw,
2055 struct ieee80211_vif *vif)
2056 {
2057 struct wl1271 *wl = hw->priv;
2058 struct wl12xx_vif *wlvif = wl12xx_vif_to_data(vif);
2059 int ret = 0;
2060 u8 role_type;
2061 bool booted = false;
2062
2063 wl1271_debug(DEBUG_MAC80211, "mac80211 add interface type %d mac %pM",
2064 ieee80211_vif_type_p2p(vif), vif->addr);
2065
2066 mutex_lock(&wl->mutex);
2067 ret = wl1271_ps_elp_wakeup(wl);
2068 if (ret < 0)
2069 goto out_unlock;
2070
2071 if (wl->vif) {
2072 wl1271_debug(DEBUG_MAC80211,
2073 "multiple vifs are not supported yet");
2074 ret = -EBUSY;
2075 goto out;
2076 }
2077
2078 /*
2079 * in some very corner case HW recovery scenarios its possible to
2080 * get here before __wl1271_op_remove_interface is complete, so
2081 * opt out if that is the case.
2082 */
2083 if (test_bit(WL1271_FLAG_RECOVERY_IN_PROGRESS, &wl->flags) ||
2084 test_bit(WLVIF_FLAG_INITIALIZED, &wlvif->flags)) {
2085 ret = -EBUSY;
2086 goto out;
2087 }
2088
2089 ret = wl12xx_init_vif_data(wl, vif);
2090 if (ret < 0)
2091 goto out;
2092
2093 wlvif->wl = wl;
2094 role_type = wl12xx_get_role_type(wl, wlvif);
2095 if (role_type == WL12XX_INVALID_ROLE_TYPE) {
2096 ret = -EINVAL;
2097 goto out;
2098 }
2099
2100 /*
2101 * TODO: after the nvs issue will be solved, move this block
2102 * to start(), and make sure here the driver is ON.
2103 */
2104 if (wl->state == WL1271_STATE_OFF) {
2105 /*
2106 * we still need this in order to configure the fw
2107 * while uploading the nvs
2108 */
2109 memcpy(wl->mac_addr, vif->addr, ETH_ALEN);
2110
2111 booted = wl12xx_init_fw(wl);
2112 if (!booted) {
2113 ret = -EINVAL;
2114 goto out;
2115 }
2116 }
2117
2118 if (wlvif->bss_type == BSS_TYPE_STA_BSS ||
2119 wlvif->bss_type == BSS_TYPE_IBSS) {
2120 /*
2121 * The device role is a special role used for
2122 * rx and tx frames prior to association (as
2123 * the STA role can get packets only from
2124 * its associated bssid)
2125 */
2126 ret = wl12xx_cmd_role_enable(wl, vif->addr,
2127 WL1271_ROLE_DEVICE,
2128 &wlvif->dev_role_id);
2129 if (ret < 0)
2130 goto out;
2131 }
2132
2133 ret = wl12xx_cmd_role_enable(wl, vif->addr,
2134 role_type, &wlvif->role_id);
2135 if (ret < 0)
2136 goto out;
2137
2138 ret = wl1271_init_vif_specific(wl, vif);
2139 if (ret < 0)
2140 goto out;
2141
2142 wl->vif = vif;
2143 list_add(&wlvif->list, &wl->wlvif_list);
2144 set_bit(WLVIF_FLAG_INITIALIZED, &wlvif->flags);
2145
2146 if (wlvif->bss_type == BSS_TYPE_AP_BSS)
2147 wl->ap_count++;
2148 else
2149 wl->sta_count++;
2150 out:
2151 wl1271_ps_elp_sleep(wl);
2152 out_unlock:
2153 mutex_unlock(&wl->mutex);
2154
2155 mutex_lock(&wl_list_mutex);
2156 if (!ret)
2157 list_add(&wl->list, &wl_list);
2158 mutex_unlock(&wl_list_mutex);
2159
2160 return ret;
2161 }
2162
2163 static void __wl1271_op_remove_interface(struct wl1271 *wl,
2164 struct ieee80211_vif *vif,
2165 bool reset_tx_queues)
2166 {
2167 struct wl12xx_vif *wlvif = wl12xx_vif_to_data(vif);
2168 int i, ret;
2169
2170 wl1271_debug(DEBUG_MAC80211, "mac80211 remove interface");
2171
2172 if (!test_and_clear_bit(WLVIF_FLAG_INITIALIZED, &wlvif->flags))
2173 return;
2174
2175 wl->vif = NULL;
2176
2177 /* because of hardware recovery, we may get here twice */
2178 if (wl->state != WL1271_STATE_ON)
2179 return;
2180
2181 wl1271_info("down");
2182
2183 /* enable dyn ps just in case (if left on due to fw crash etc) */
2184 if (wlvif->bss_type == BSS_TYPE_STA_BSS)
2185 ieee80211_enable_dyn_ps(vif);
2186
2187 if (wl->scan.state != WL1271_SCAN_STATE_IDLE &&
2188 wl->scan_vif == vif) {
2189 wl->scan.state = WL1271_SCAN_STATE_IDLE;
2190 memset(wl->scan.scanned_ch, 0, sizeof(wl->scan.scanned_ch));
2191 wl->scan_vif = NULL;
2192 wl->scan.req = NULL;
2193 ieee80211_scan_completed(wl->hw, true);
2194 }
2195
2196 if (!test_bit(WL1271_FLAG_RECOVERY_IN_PROGRESS, &wl->flags)) {
2197 /* disable active roles */
2198 ret = wl1271_ps_elp_wakeup(wl);
2199 if (ret < 0)
2200 goto deinit;
2201
2202 if (wlvif->bss_type == BSS_TYPE_STA_BSS ||
2203 wlvif->bss_type == BSS_TYPE_IBSS) {
2204 if (wl12xx_dev_role_started(wlvif))
2205 wl12xx_stop_dev(wl, wlvif);
2206
2207 ret = wl12xx_cmd_role_disable(wl, &wlvif->dev_role_id);
2208 if (ret < 0)
2209 goto deinit;
2210 }
2211
2212 ret = wl12xx_cmd_role_disable(wl, &wlvif->role_id);
2213 if (ret < 0)
2214 goto deinit;
2215
2216 wl1271_ps_elp_sleep(wl);
2217 }
2218 deinit:
2219 /* clear all hlids (except system_hlid) */
2220 wlvif->dev_hlid = WL12XX_INVALID_LINK_ID;
2221
2222 if (wlvif->bss_type == BSS_TYPE_STA_BSS ||
2223 wlvif->bss_type == BSS_TYPE_IBSS) {
2224 wlvif->sta.hlid = WL12XX_INVALID_LINK_ID;
2225 wl12xx_free_rate_policy(wl, &wlvif->sta.basic_rate_idx);
2226 wl12xx_free_rate_policy(wl, &wlvif->sta.ap_rate_idx);
2227 wl12xx_free_rate_policy(wl, &wlvif->sta.p2p_rate_idx);
2228 } else {
2229 wlvif->ap.bcast_hlid = WL12XX_INVALID_LINK_ID;
2230 wlvif->ap.global_hlid = WL12XX_INVALID_LINK_ID;
2231 wl12xx_free_rate_policy(wl, &wlvif->ap.mgmt_rate_idx);
2232 wl12xx_free_rate_policy(wl, &wlvif->ap.bcast_rate_idx);
2233 for (i = 0; i < CONF_TX_MAX_AC_COUNT; i++)
2234 wl12xx_free_rate_policy(wl,
2235 &wlvif->ap.ucast_rate_idx[i]);
2236 }
2237
2238 wl12xx_tx_reset_wlvif(wl, wlvif);
2239 wl1271_free_ap_keys(wl, wlvif);
2240 if (wl->last_wlvif == wlvif)
2241 wl->last_wlvif = NULL;
2242 list_del(&wlvif->list);
2243 memset(wlvif->ap.sta_hlid_map, 0, sizeof(wlvif->ap.sta_hlid_map));
2244 wlvif->role_id = WL12XX_INVALID_ROLE_ID;
2245 wlvif->dev_role_id = WL12XX_INVALID_ROLE_ID;
2246
2247 if (wlvif->bss_type == BSS_TYPE_AP_BSS)
2248 wl->ap_count--;
2249 else
2250 wl->sta_count--;
2251
2252 mutex_unlock(&wl->mutex);
2253 del_timer_sync(&wlvif->rx_streaming_timer);
2254 cancel_work_sync(&wlvif->rx_streaming_enable_work);
2255 cancel_work_sync(&wlvif->rx_streaming_disable_work);
2256 cancel_delayed_work_sync(&wlvif->pspoll_work);
2257
2258 mutex_lock(&wl->mutex);
2259 }
2260
2261 static void wl1271_op_remove_interface(struct ieee80211_hw *hw,
2262 struct ieee80211_vif *vif)
2263 {
2264 struct wl1271 *wl = hw->priv;
2265 struct wl12xx_vif *wlvif = wl12xx_vif_to_data(vif);
2266 struct wl12xx_vif *iter;
2267
2268 mutex_lock(&wl->mutex);
2269
2270 if (wl->state == WL1271_STATE_OFF ||
2271 !test_bit(WLVIF_FLAG_INITIALIZED, &wlvif->flags))
2272 goto out;
2273
2274 /*
2275 * wl->vif can be null here if someone shuts down the interface
2276 * just when hardware recovery has been started.
2277 */
2278 wl12xx_for_each_wlvif(wl, iter) {
2279 if (iter != wlvif)
2280 continue;
2281
2282 __wl1271_op_remove_interface(wl, vif, true);
2283 break;
2284 }
2285 WARN_ON(iter != wlvif);
2286 out:
2287 mutex_unlock(&wl->mutex);
2288 cancel_work_sync(&wl->recovery_work);
2289 }
2290
2291 static int wl12xx_op_change_interface(struct ieee80211_hw *hw,
2292 struct ieee80211_vif *vif,
2293 enum nl80211_iftype new_type, bool p2p)
2294 {
2295 wl1271_op_remove_interface(hw, vif);
2296
2297 vif->type = ieee80211_iftype_p2p(new_type, p2p);
2298 vif->p2p = p2p;
2299 return wl1271_op_add_interface(hw, vif);
2300 }
2301
2302 static int wl1271_join(struct wl1271 *wl, struct wl12xx_vif *wlvif,
2303 bool set_assoc)
2304 {
2305 int ret;
2306 bool is_ibss = (wlvif->bss_type == BSS_TYPE_IBSS);
2307
2308 /*
2309 * One of the side effects of the JOIN command is that is clears
2310 * WPA/WPA2 keys from the chipset. Performing a JOIN while associated
2311 * to a WPA/WPA2 access point will therefore kill the data-path.
2312 * Currently the only valid scenario for JOIN during association
2313 * is on roaming, in which case we will also be given new keys.
2314 * Keep the below message for now, unless it starts bothering
2315 * users who really like to roam a lot :)
2316 */
2317 if (test_bit(WLVIF_FLAG_STA_ASSOCIATED, &wlvif->flags))
2318 wl1271_info("JOIN while associated.");
2319
2320 if (set_assoc)
2321 set_bit(WLVIF_FLAG_STA_ASSOCIATED, &wlvif->flags);
2322
2323 if (is_ibss)
2324 ret = wl12xx_cmd_role_start_ibss(wl, wlvif);
2325 else
2326 ret = wl12xx_cmd_role_start_sta(wl, wlvif);
2327 if (ret < 0)
2328 goto out;
2329
2330 if (!test_bit(WLVIF_FLAG_STA_ASSOCIATED, &wlvif->flags))
2331 goto out;
2332
2333 /*
2334 * The join command disable the keep-alive mode, shut down its process,
2335 * and also clear the template config, so we need to reset it all after
2336 * the join. The acx_aid starts the keep-alive process, and the order
2337 * of the commands below is relevant.
2338 */
2339 ret = wl1271_acx_keep_alive_mode(wl, wlvif, true);
2340 if (ret < 0)
2341 goto out;
2342
2343 ret = wl1271_acx_aid(wl, wlvif, wlvif->aid);
2344 if (ret < 0)
2345 goto out;
2346
2347 ret = wl12xx_cmd_build_klv_null_data(wl, wlvif);
2348 if (ret < 0)
2349 goto out;
2350
2351 ret = wl1271_acx_keep_alive_config(wl, wlvif,
2352 CMD_TEMPL_KLV_IDX_NULL_DATA,
2353 ACX_KEEP_ALIVE_TPL_VALID);
2354 if (ret < 0)
2355 goto out;
2356
2357 out:
2358 return ret;
2359 }
2360
2361 static int wl1271_unjoin(struct wl1271 *wl, struct wl12xx_vif *wlvif)
2362 {
2363 int ret;
2364
2365 if (test_and_clear_bit(WLVIF_FLAG_CS_PROGRESS, &wlvif->flags)) {
2366 struct ieee80211_vif *vif = wl12xx_wlvif_to_vif(wlvif);
2367
2368 wl12xx_cmd_stop_channel_switch(wl);
2369 ieee80211_chswitch_done(vif, false);
2370 }
2371
2372 /* to stop listening to a channel, we disconnect */
2373 ret = wl12xx_cmd_role_stop_sta(wl, wlvif);
2374 if (ret < 0)
2375 goto out;
2376
2377 /* reset TX security counters on a clean disconnect */
2378 wlvif->tx_security_last_seq_lsb = 0;
2379 wlvif->tx_security_seq = 0;
2380
2381 out:
2382 return ret;
2383 }
2384
2385 static void wl1271_set_band_rate(struct wl1271 *wl, struct wl12xx_vif *wlvif)
2386 {
2387 wlvif->basic_rate_set = wlvif->bitrate_masks[wlvif->band];
2388 wlvif->rate_set = wlvif->basic_rate_set;
2389 }
2390
2391 static int wl1271_sta_handle_idle(struct wl1271 *wl, struct wl12xx_vif *wlvif,
2392 bool idle)
2393 {
2394 int ret;
2395 bool cur_idle = !test_bit(WLVIF_FLAG_IN_USE, &wlvif->flags);
2396
2397 if (idle == cur_idle)
2398 return 0;
2399
2400 if (idle) {
2401 /* no need to croc if we weren't busy (e.g. during boot) */
2402 if (wl12xx_dev_role_started(wlvif)) {
2403 ret = wl12xx_stop_dev(wl, wlvif);
2404 if (ret < 0)
2405 goto out;
2406 }
2407 wlvif->rate_set =
2408 wl1271_tx_min_rate_get(wl, wlvif->basic_rate_set);
2409 ret = wl1271_acx_sta_rate_policies(wl, wlvif);
2410 if (ret < 0)
2411 goto out;
2412 ret = wl1271_acx_keep_alive_config(
2413 wl, wlvif, CMD_TEMPL_KLV_IDX_NULL_DATA,
2414 ACX_KEEP_ALIVE_TPL_INVALID);
2415 if (ret < 0)
2416 goto out;
2417 clear_bit(WLVIF_FLAG_IN_USE, &wlvif->flags);
2418 } else {
2419 /* The current firmware only supports sched_scan in idle */
2420 if (wl->sched_scanning) {
2421 wl1271_scan_sched_scan_stop(wl);
2422 ieee80211_sched_scan_stopped(wl->hw);
2423 }
2424
2425 ret = wl12xx_start_dev(wl, wlvif);
2426 if (ret < 0)
2427 goto out;
2428 set_bit(WLVIF_FLAG_IN_USE, &wlvif->flags);
2429 }
2430
2431 out:
2432 return ret;
2433 }
2434
2435 static int wl12xx_config_vif(struct wl1271 *wl, struct wl12xx_vif *wlvif,
2436 struct ieee80211_conf *conf, u32 changed)
2437 {
2438 bool is_ap = (wlvif->bss_type == BSS_TYPE_AP_BSS);
2439 int channel, ret;
2440
2441 channel = ieee80211_frequency_to_channel(conf->channel->center_freq);
2442
2443 /* if the channel changes while joined, join again */
2444 if (changed & IEEE80211_CONF_CHANGE_CHANNEL &&
2445 ((wlvif->band != conf->channel->band) ||
2446 (wlvif->channel != channel))) {
2447 /* send all pending packets */
2448 wl1271_tx_work_locked(wl);
2449 wlvif->band = conf->channel->band;
2450 wlvif->channel = channel;
2451
2452 if (!is_ap) {
2453 /*
2454 * FIXME: the mac80211 should really provide a fixed
2455 * rate to use here. for now, just use the smallest
2456 * possible rate for the band as a fixed rate for
2457 * association frames and other control messages.
2458 */
2459 if (!test_bit(WLVIF_FLAG_STA_ASSOCIATED, &wlvif->flags))
2460 wl1271_set_band_rate(wl, wlvif);
2461
2462 wlvif->basic_rate =
2463 wl1271_tx_min_rate_get(wl,
2464 wlvif->basic_rate_set);
2465 ret = wl1271_acx_sta_rate_policies(wl, wlvif);
2466 if (ret < 0)
2467 wl1271_warning("rate policy for channel "
2468 "failed %d", ret);
2469
2470 if (test_bit(WLVIF_FLAG_STA_ASSOCIATED,
2471 &wlvif->flags)) {
2472 if (wl12xx_dev_role_started(wlvif)) {
2473 /* roaming */
2474 ret = wl12xx_croc(wl,
2475 wlvif->dev_role_id);
2476 if (ret < 0)
2477 return ret;
2478 }
2479 ret = wl1271_join(wl, wlvif, false);
2480 if (ret < 0)
2481 wl1271_warning("cmd join on channel "
2482 "failed %d", ret);
2483 } else {
2484 /*
2485 * change the ROC channel. do it only if we are
2486 * not idle. otherwise, CROC will be called
2487 * anyway.
2488 */
2489 if (wl12xx_dev_role_started(wlvif) &&
2490 !(conf->flags & IEEE80211_CONF_IDLE)) {
2491 ret = wl12xx_stop_dev(wl, wlvif);
2492 if (ret < 0)
2493 return ret;
2494
2495 ret = wl12xx_start_dev(wl, wlvif);
2496 if (ret < 0)
2497 return ret;
2498 }
2499 }
2500 }
2501 }
2502
2503 /*
2504 * if mac80211 changes the PSM mode, make sure the mode is not
2505 * incorrectly changed after the pspoll failure active window.
2506 */
2507 if (changed & IEEE80211_CONF_CHANGE_PS)
2508 clear_bit(WLVIF_FLAG_PSPOLL_FAILURE, &wlvif->flags);
2509
2510 if (conf->flags & IEEE80211_CONF_PS &&
2511 !test_bit(WLVIF_FLAG_PSM_REQUESTED, &wlvif->flags)) {
2512 set_bit(WLVIF_FLAG_PSM_REQUESTED, &wlvif->flags);
2513
2514 /*
2515 * We enter PSM only if we're already associated.
2516 * If we're not, we'll enter it when joining an SSID,
2517 * through the bss_info_changed() hook.
2518 */
2519 if (test_bit(WLVIF_FLAG_STA_ASSOCIATED, &wlvif->flags)) {
2520 wl1271_debug(DEBUG_PSM, "psm enabled");
2521 ret = wl1271_ps_set_mode(wl, wlvif,
2522 STATION_POWER_SAVE_MODE,
2523 wlvif->basic_rate, true);
2524 }
2525 } else if (!(conf->flags & IEEE80211_CONF_PS) &&
2526 test_bit(WLVIF_FLAG_PSM_REQUESTED, &wlvif->flags)) {
2527 wl1271_debug(DEBUG_PSM, "psm disabled");
2528
2529 clear_bit(WLVIF_FLAG_PSM_REQUESTED, &wlvif->flags);
2530
2531 if (test_bit(WLVIF_FLAG_PSM, &wlvif->flags))
2532 ret = wl1271_ps_set_mode(wl, wlvif,
2533 STATION_ACTIVE_MODE,
2534 wlvif->basic_rate, true);
2535 }
2536
2537 if (conf->power_level != wlvif->power_level) {
2538 ret = wl1271_acx_tx_power(wl, wlvif, conf->power_level);
2539 if (ret < 0)
2540 return ret;
2541
2542 wlvif->power_level = conf->power_level;
2543 }
2544
2545 return 0;
2546 }
2547
2548 static int wl1271_op_config(struct ieee80211_hw *hw, u32 changed)
2549 {
2550 struct wl1271 *wl = hw->priv;
2551 struct wl12xx_vif *wlvif;
2552 struct ieee80211_conf *conf = &hw->conf;
2553 int channel, ret = 0;
2554
2555 channel = ieee80211_frequency_to_channel(conf->channel->center_freq);
2556
2557 wl1271_debug(DEBUG_MAC80211, "mac80211 config ch %d psm %s power %d %s"
2558 " changed 0x%x",
2559 channel,
2560 conf->flags & IEEE80211_CONF_PS ? "on" : "off",
2561 conf->power_level,
2562 conf->flags & IEEE80211_CONF_IDLE ? "idle" : "in use",
2563 changed);
2564
2565 /*
2566 * mac80211 will go to idle nearly immediately after transmitting some
2567 * frames, such as the deauth. To make sure those frames reach the air,
2568 * wait here until the TX queue is fully flushed.
2569 */
2570 if ((changed & IEEE80211_CONF_CHANGE_IDLE) &&
2571 (conf->flags & IEEE80211_CONF_IDLE))
2572 wl1271_tx_flush(wl);
2573
2574 mutex_lock(&wl->mutex);
2575
2576 /* we support configuring the channel and band even while off */
2577 if (changed & IEEE80211_CONF_CHANGE_CHANNEL) {
2578 wl->band = conf->channel->band;
2579 wl->channel = channel;
2580 }
2581
2582 if (changed & IEEE80211_CONF_CHANGE_POWER)
2583 wl->power_level = conf->power_level;
2584
2585 if (unlikely(wl->state == WL1271_STATE_OFF))
2586 goto out;
2587
2588 ret = wl1271_ps_elp_wakeup(wl);
2589 if (ret < 0)
2590 goto out;
2591
2592 /* configure each interface */
2593 wl12xx_for_each_wlvif(wl, wlvif) {
2594 ret = wl12xx_config_vif(wl, wlvif, conf, changed);
2595 if (ret < 0)
2596 goto out_sleep;
2597 }
2598
2599 out_sleep:
2600 wl1271_ps_elp_sleep(wl);
2601
2602 out:
2603 mutex_unlock(&wl->mutex);
2604
2605 return ret;
2606 }
2607
2608 struct wl1271_filter_params {
2609 bool enabled;
2610 int mc_list_length;
2611 u8 mc_list[ACX_MC_ADDRESS_GROUP_MAX][ETH_ALEN];
2612 };
2613
2614 static u64 wl1271_op_prepare_multicast(struct ieee80211_hw *hw,
2615 struct netdev_hw_addr_list *mc_list)
2616 {
2617 struct wl1271_filter_params *fp;
2618 struct netdev_hw_addr *ha;
2619 struct wl1271 *wl = hw->priv;
2620
2621 if (unlikely(wl->state == WL1271_STATE_OFF))
2622 return 0;
2623
2624 fp = kzalloc(sizeof(*fp), GFP_ATOMIC);
2625 if (!fp) {
2626 wl1271_error("Out of memory setting filters.");
2627 return 0;
2628 }
2629
2630 /* update multicast filtering parameters */
2631 fp->mc_list_length = 0;
2632 if (netdev_hw_addr_list_count(mc_list) > ACX_MC_ADDRESS_GROUP_MAX) {
2633 fp->enabled = false;
2634 } else {
2635 fp->enabled = true;
2636 netdev_hw_addr_list_for_each(ha, mc_list) {
2637 memcpy(fp->mc_list[fp->mc_list_length],
2638 ha->addr, ETH_ALEN);
2639 fp->mc_list_length++;
2640 }
2641 }
2642
2643 return (u64)(unsigned long)fp;
2644 }
2645
2646 #define WL1271_SUPPORTED_FILTERS (FIF_PROMISC_IN_BSS | \
2647 FIF_ALLMULTI | \
2648 FIF_FCSFAIL | \
2649 FIF_BCN_PRBRESP_PROMISC | \
2650 FIF_CONTROL | \
2651 FIF_OTHER_BSS)
2652
2653 static void wl1271_op_configure_filter(struct ieee80211_hw *hw,
2654 unsigned int changed,
2655 unsigned int *total, u64 multicast)
2656 {
2657 struct wl1271_filter_params *fp = (void *)(unsigned long)multicast;
2658 struct wl1271 *wl = hw->priv;
2659 struct wl12xx_vif *wlvif;
2660
2661 int ret;
2662
2663 wl1271_debug(DEBUG_MAC80211, "mac80211 configure filter changed %x"
2664 " total %x", changed, *total);
2665
2666 mutex_lock(&wl->mutex);
2667
2668 *total &= WL1271_SUPPORTED_FILTERS;
2669 changed &= WL1271_SUPPORTED_FILTERS;
2670
2671 if (unlikely(wl->state == WL1271_STATE_OFF))
2672 goto out;
2673
2674 ret = wl1271_ps_elp_wakeup(wl);
2675 if (ret < 0)
2676 goto out;
2677
2678 wl12xx_for_each_wlvif(wl, wlvif) {
2679 if (wlvif->bss_type != BSS_TYPE_AP_BSS) {
2680 if (*total & FIF_ALLMULTI)
2681 ret = wl1271_acx_group_address_tbl(wl, wlvif,
2682 false,
2683 NULL, 0);
2684 else if (fp)
2685 ret = wl1271_acx_group_address_tbl(wl, wlvif,
2686 fp->enabled,
2687 fp->mc_list,
2688 fp->mc_list_length);
2689 if (ret < 0)
2690 goto out_sleep;
2691 }
2692 }
2693
2694 /*
2695 * the fw doesn't provide an api to configure the filters. instead,
2696 * the filters configuration is based on the active roles / ROC
2697 * state.
2698 */
2699
2700 out_sleep:
2701 wl1271_ps_elp_sleep(wl);
2702
2703 out:
2704 mutex_unlock(&wl->mutex);
2705 kfree(fp);
2706 }
2707
2708 static int wl1271_record_ap_key(struct wl1271 *wl, struct wl12xx_vif *wlvif,
2709 u8 id, u8 key_type, u8 key_size,
2710 const u8 *key, u8 hlid, u32 tx_seq_32,
2711 u16 tx_seq_16)
2712 {
2713 struct wl1271_ap_key *ap_key;
2714 int i;
2715
2716 wl1271_debug(DEBUG_CRYPT, "record ap key id %d", (int)id);
2717
2718 if (key_size > MAX_KEY_SIZE)
2719 return -EINVAL;
2720
2721 /*
2722 * Find next free entry in ap_keys. Also check we are not replacing
2723 * an existing key.
2724 */
2725 for (i = 0; i < MAX_NUM_KEYS; i++) {
2726 if (wlvif->ap.recorded_keys[i] == NULL)
2727 break;
2728
2729 if (wlvif->ap.recorded_keys[i]->id == id) {
2730 wl1271_warning("trying to record key replacement");
2731 return -EINVAL;
2732 }
2733 }
2734
2735 if (i == MAX_NUM_KEYS)
2736 return -EBUSY;
2737
2738 ap_key = kzalloc(sizeof(*ap_key), GFP_KERNEL);
2739 if (!ap_key)
2740 return -ENOMEM;
2741
2742 ap_key->id = id;
2743 ap_key->key_type = key_type;
2744 ap_key->key_size = key_size;
2745 memcpy(ap_key->key, key, key_size);
2746 ap_key->hlid = hlid;
2747 ap_key->tx_seq_32 = tx_seq_32;
2748 ap_key->tx_seq_16 = tx_seq_16;
2749
2750 wlvif->ap.recorded_keys[i] = ap_key;
2751 return 0;
2752 }
2753
2754 static void wl1271_free_ap_keys(struct wl1271 *wl, struct wl12xx_vif *wlvif)
2755 {
2756 int i;
2757
2758 for (i = 0; i < MAX_NUM_KEYS; i++) {
2759 kfree(wlvif->ap.recorded_keys[i]);
2760 wlvif->ap.recorded_keys[i] = NULL;
2761 }
2762 }
2763
2764 static int wl1271_ap_init_hwenc(struct wl1271 *wl, struct wl12xx_vif *wlvif)
2765 {
2766 int i, ret = 0;
2767 struct wl1271_ap_key *key;
2768 bool wep_key_added = false;
2769
2770 for (i = 0; i < MAX_NUM_KEYS; i++) {
2771 u8 hlid;
2772 if (wlvif->ap.recorded_keys[i] == NULL)
2773 break;
2774
2775 key = wlvif->ap.recorded_keys[i];
2776 hlid = key->hlid;
2777 if (hlid == WL12XX_INVALID_LINK_ID)
2778 hlid = wlvif->ap.bcast_hlid;
2779
2780 ret = wl1271_cmd_set_ap_key(wl, wlvif, KEY_ADD_OR_REPLACE,
2781 key->id, key->key_type,
2782 key->key_size, key->key,
2783 hlid, key->tx_seq_32,
2784 key->tx_seq_16);
2785 if (ret < 0)
2786 goto out;
2787
2788 if (key->key_type == KEY_WEP)
2789 wep_key_added = true;
2790 }
2791
2792 if (wep_key_added) {
2793 ret = wl12xx_cmd_set_default_wep_key(wl, wlvif->default_key,
2794 wlvif->ap.bcast_hlid);
2795 if (ret < 0)
2796 goto out;
2797 }
2798
2799 out:
2800 wl1271_free_ap_keys(wl, wlvif);
2801 return ret;
2802 }
2803
2804 static int wl1271_set_key(struct wl1271 *wl, struct wl12xx_vif *wlvif,
2805 u16 action, u8 id, u8 key_type,
2806 u8 key_size, const u8 *key, u32 tx_seq_32,
2807 u16 tx_seq_16, struct ieee80211_sta *sta)
2808 {
2809 int ret;
2810 bool is_ap = (wlvif->bss_type == BSS_TYPE_AP_BSS);
2811
2812 if (is_ap) {
2813 struct wl1271_station *wl_sta;
2814 u8 hlid;
2815
2816 if (sta) {
2817 wl_sta = (struct wl1271_station *)sta->drv_priv;
2818 hlid = wl_sta->hlid;
2819 } else {
2820 hlid = wlvif->ap.bcast_hlid;
2821 }
2822
2823 if (!test_bit(WLVIF_FLAG_AP_STARTED, &wlvif->flags)) {
2824 /*
2825 * We do not support removing keys after AP shutdown.
2826 * Pretend we do to make mac80211 happy.
2827 */
2828 if (action != KEY_ADD_OR_REPLACE)
2829 return 0;
2830
2831 ret = wl1271_record_ap_key(wl, wlvif, id,
2832 key_type, key_size,
2833 key, hlid, tx_seq_32,
2834 tx_seq_16);
2835 } else {
2836 ret = wl1271_cmd_set_ap_key(wl, wlvif, action,
2837 id, key_type, key_size,
2838 key, hlid, tx_seq_32,
2839 tx_seq_16);
2840 }
2841
2842 if (ret < 0)
2843 return ret;
2844 } else {
2845 const u8 *addr;
2846 static const u8 bcast_addr[ETH_ALEN] = {
2847 0xff, 0xff, 0xff, 0xff, 0xff, 0xff
2848 };
2849
2850 /*
2851 * A STA set to GEM cipher requires 2 tx spare blocks.
2852 * Return to default value when GEM cipher key is removed
2853 */
2854 if (key_type == KEY_GEM) {
2855 if (action == KEY_ADD_OR_REPLACE)
2856 wl->tx_spare_blocks = 2;
2857 else if (action == KEY_REMOVE)
2858 wl->tx_spare_blocks = TX_HW_BLOCK_SPARE_DEFAULT;
2859 }
2860
2861 addr = sta ? sta->addr : bcast_addr;
2862
2863 if (is_zero_ether_addr(addr)) {
2864 /* We dont support TX only encryption */
2865 return -EOPNOTSUPP;
2866 }
2867
2868 /* The wl1271 does not allow to remove unicast keys - they
2869 will be cleared automatically on next CMD_JOIN. Ignore the
2870 request silently, as we dont want the mac80211 to emit
2871 an error message. */
2872 if (action == KEY_REMOVE && !is_broadcast_ether_addr(addr))
2873 return 0;
2874
2875 /* don't remove key if hlid was already deleted */
2876 if (action == KEY_REMOVE &&
2877 wlvif->sta.hlid == WL12XX_INVALID_LINK_ID)
2878 return 0;
2879
2880 ret = wl1271_cmd_set_sta_key(wl, wlvif, action,
2881 id, key_type, key_size,
2882 key, addr, tx_seq_32,
2883 tx_seq_16);
2884 if (ret < 0)
2885 return ret;
2886
2887 /* the default WEP key needs to be configured at least once */
2888 if (key_type == KEY_WEP) {
2889 ret = wl12xx_cmd_set_default_wep_key(wl,
2890 wlvif->default_key,
2891 wlvif->sta.hlid);
2892 if (ret < 0)
2893 return ret;
2894 }
2895 }
2896
2897 return 0;
2898 }
2899
2900 static int wl1271_op_set_key(struct ieee80211_hw *hw, enum set_key_cmd cmd,
2901 struct ieee80211_vif *vif,
2902 struct ieee80211_sta *sta,
2903 struct ieee80211_key_conf *key_conf)
2904 {
2905 struct wl1271 *wl = hw->priv;
2906 struct wl12xx_vif *wlvif = wl12xx_vif_to_data(vif);
2907 int ret;
2908 u32 tx_seq_32 = 0;
2909 u16 tx_seq_16 = 0;
2910 u8 key_type;
2911
2912 wl1271_debug(DEBUG_MAC80211, "mac80211 set key");
2913
2914 wl1271_debug(DEBUG_CRYPT, "CMD: 0x%x sta: %p", cmd, sta);
2915 wl1271_debug(DEBUG_CRYPT, "Key: algo:0x%x, id:%d, len:%d flags 0x%x",
2916 key_conf->cipher, key_conf->keyidx,
2917 key_conf->keylen, key_conf->flags);
2918 wl1271_dump(DEBUG_CRYPT, "KEY: ", key_conf->key, key_conf->keylen);
2919
2920 mutex_lock(&wl->mutex);
2921
2922 if (unlikely(wl->state == WL1271_STATE_OFF)) {
2923 ret = -EAGAIN;
2924 goto out_unlock;
2925 }
2926
2927 ret = wl1271_ps_elp_wakeup(wl);
2928 if (ret < 0)
2929 goto out_unlock;
2930
2931 switch (key_conf->cipher) {
2932 case WLAN_CIPHER_SUITE_WEP40:
2933 case WLAN_CIPHER_SUITE_WEP104:
2934 key_type = KEY_WEP;
2935
2936 key_conf->hw_key_idx = key_conf->keyidx;
2937 break;
2938 case WLAN_CIPHER_SUITE_TKIP:
2939 key_type = KEY_TKIP;
2940
2941 key_conf->hw_key_idx = key_conf->keyidx;
2942 tx_seq_32 = WL1271_TX_SECURITY_HI32(wlvif->tx_security_seq);
2943 tx_seq_16 = WL1271_TX_SECURITY_LO16(wlvif->tx_security_seq);
2944 break;
2945 case WLAN_CIPHER_SUITE_CCMP:
2946 key_type = KEY_AES;
2947
2948 key_conf->flags |= IEEE80211_KEY_FLAG_PUT_IV_SPACE;
2949 tx_seq_32 = WL1271_TX_SECURITY_HI32(wlvif->tx_security_seq);
2950 tx_seq_16 = WL1271_TX_SECURITY_LO16(wlvif->tx_security_seq);
2951 break;
2952 case WL1271_CIPHER_SUITE_GEM:
2953 key_type = KEY_GEM;
2954 tx_seq_32 = WL1271_TX_SECURITY_HI32(wlvif->tx_security_seq);
2955 tx_seq_16 = WL1271_TX_SECURITY_LO16(wlvif->tx_security_seq);
2956 break;
2957 default:
2958 wl1271_error("Unknown key algo 0x%x", key_conf->cipher);
2959
2960 ret = -EOPNOTSUPP;
2961 goto out_sleep;
2962 }
2963
2964 switch (cmd) {
2965 case SET_KEY:
2966 ret = wl1271_set_key(wl, wlvif, KEY_ADD_OR_REPLACE,
2967 key_conf->keyidx, key_type,
2968 key_conf->keylen, key_conf->key,
2969 tx_seq_32, tx_seq_16, sta);
2970 if (ret < 0) {
2971 wl1271_error("Could not add or replace key");
2972 goto out_sleep;
2973 }
2974 break;
2975
2976 case DISABLE_KEY:
2977 ret = wl1271_set_key(wl, wlvif, KEY_REMOVE,
2978 key_conf->keyidx, key_type,
2979 key_conf->keylen, key_conf->key,
2980 0, 0, sta);
2981 if (ret < 0) {
2982 wl1271_error("Could not remove key");
2983 goto out_sleep;
2984 }
2985 break;
2986
2987 default:
2988 wl1271_error("Unsupported key cmd 0x%x", cmd);
2989 ret = -EOPNOTSUPP;
2990 break;
2991 }
2992
2993 out_sleep:
2994 wl1271_ps_elp_sleep(wl);
2995
2996 out_unlock:
2997 mutex_unlock(&wl->mutex);
2998
2999 return ret;
3000 }
3001
3002 static int wl1271_op_hw_scan(struct ieee80211_hw *hw,
3003 struct ieee80211_vif *vif,
3004 struct cfg80211_scan_request *req)
3005 {
3006 struct wl1271 *wl = hw->priv;
3007 struct wl12xx_vif *wlvif = wl12xx_vif_to_data(vif);
3008
3009 int ret;
3010 u8 *ssid = NULL;
3011 size_t len = 0;
3012
3013 wl1271_debug(DEBUG_MAC80211, "mac80211 hw scan");
3014
3015 if (req->n_ssids) {
3016 ssid = req->ssids[0].ssid;
3017 len = req->ssids[0].ssid_len;
3018 }
3019
3020 mutex_lock(&wl->mutex);
3021
3022 if (wl->state == WL1271_STATE_OFF) {
3023 /*
3024 * We cannot return -EBUSY here because cfg80211 will expect
3025 * a call to ieee80211_scan_completed if we do - in this case
3026 * there won't be any call.
3027 */
3028 ret = -EAGAIN;
3029 goto out;
3030 }
3031
3032 ret = wl1271_ps_elp_wakeup(wl);
3033 if (ret < 0)
3034 goto out;
3035
3036 if (test_bit(WLVIF_FLAG_STA_ASSOCIATED, &wlvif->flags) &&
3037 test_bit(wlvif->role_id, wl->roc_map)) {
3038 /* don't allow scanning right now */
3039 ret = -EBUSY;
3040 goto out_sleep;
3041 }
3042
3043 /* cancel ROC before scanning */
3044 if (wl12xx_dev_role_started(wlvif))
3045 wl12xx_stop_dev(wl, wlvif);
3046
3047 ret = wl1271_scan(hw->priv, vif, ssid, len, req);
3048 out_sleep:
3049 wl1271_ps_elp_sleep(wl);
3050 out:
3051 mutex_unlock(&wl->mutex);
3052
3053 return ret;
3054 }
3055
3056 static void wl1271_op_cancel_hw_scan(struct ieee80211_hw *hw,
3057 struct ieee80211_vif *vif)
3058 {
3059 struct wl1271 *wl = hw->priv;
3060 int ret;
3061
3062 wl1271_debug(DEBUG_MAC80211, "mac80211 cancel hw scan");
3063
3064 mutex_lock(&wl->mutex);
3065
3066 if (wl->state == WL1271_STATE_OFF)
3067 goto out;
3068
3069 if (wl->scan.state == WL1271_SCAN_STATE_IDLE)
3070 goto out;
3071
3072 ret = wl1271_ps_elp_wakeup(wl);
3073 if (ret < 0)
3074 goto out;
3075
3076 if (wl->scan.state != WL1271_SCAN_STATE_DONE) {
3077 ret = wl1271_scan_stop(wl);
3078 if (ret < 0)
3079 goto out_sleep;
3080 }
3081 wl->scan.state = WL1271_SCAN_STATE_IDLE;
3082 memset(wl->scan.scanned_ch, 0, sizeof(wl->scan.scanned_ch));
3083 wl->scan_vif = NULL;
3084 wl->scan.req = NULL;
3085 ieee80211_scan_completed(wl->hw, true);
3086
3087 out_sleep:
3088 wl1271_ps_elp_sleep(wl);
3089 out:
3090 mutex_unlock(&wl->mutex);
3091
3092 cancel_delayed_work_sync(&wl->scan_complete_work);
3093 }
3094
3095 static int wl1271_op_sched_scan_start(struct ieee80211_hw *hw,
3096 struct ieee80211_vif *vif,
3097 struct cfg80211_sched_scan_request *req,
3098 struct ieee80211_sched_scan_ies *ies)
3099 {
3100 struct wl1271 *wl = hw->priv;
3101 struct wl12xx_vif *wlvif = wl12xx_vif_to_data(vif);
3102 int ret;
3103
3104 wl1271_debug(DEBUG_MAC80211, "wl1271_op_sched_scan_start");
3105
3106 mutex_lock(&wl->mutex);
3107
3108 ret = wl1271_ps_elp_wakeup(wl);
3109 if (ret < 0)
3110 goto out;
3111
3112 ret = wl1271_scan_sched_scan_config(wl, wlvif, req, ies);
3113 if (ret < 0)
3114 goto out_sleep;
3115
3116 ret = wl1271_scan_sched_scan_start(wl, wlvif);
3117 if (ret < 0)
3118 goto out_sleep;
3119
3120 wl->sched_scanning = true;
3121
3122 out_sleep:
3123 wl1271_ps_elp_sleep(wl);
3124 out:
3125 mutex_unlock(&wl->mutex);
3126 return ret;
3127 }
3128
3129 static void wl1271_op_sched_scan_stop(struct ieee80211_hw *hw,
3130 struct ieee80211_vif *vif)
3131 {
3132 struct wl1271 *wl = hw->priv;
3133 int ret;
3134
3135 wl1271_debug(DEBUG_MAC80211, "wl1271_op_sched_scan_stop");
3136
3137 mutex_lock(&wl->mutex);
3138
3139 ret = wl1271_ps_elp_wakeup(wl);
3140 if (ret < 0)
3141 goto out;
3142
3143 wl1271_scan_sched_scan_stop(wl);
3144
3145 wl1271_ps_elp_sleep(wl);
3146 out:
3147 mutex_unlock(&wl->mutex);
3148 }
3149
3150 static int wl1271_op_set_frag_threshold(struct ieee80211_hw *hw, u32 value)
3151 {
3152 struct wl1271 *wl = hw->priv;
3153 int ret = 0;
3154
3155 mutex_lock(&wl->mutex);
3156
3157 if (unlikely(wl->state == WL1271_STATE_OFF)) {
3158 ret = -EAGAIN;
3159 goto out;
3160 }
3161
3162 ret = wl1271_ps_elp_wakeup(wl);
3163 if (ret < 0)
3164 goto out;
3165
3166 ret = wl1271_acx_frag_threshold(wl, value);
3167 if (ret < 0)
3168 wl1271_warning("wl1271_op_set_frag_threshold failed: %d", ret);
3169
3170 wl1271_ps_elp_sleep(wl);
3171
3172 out:
3173 mutex_unlock(&wl->mutex);
3174
3175 return ret;
3176 }
3177
3178 static int wl1271_op_set_rts_threshold(struct ieee80211_hw *hw, u32 value)
3179 {
3180 struct wl1271 *wl = hw->priv;
3181 struct wl12xx_vif *wlvif;
3182 int ret = 0;
3183
3184 mutex_lock(&wl->mutex);
3185
3186 if (unlikely(wl->state == WL1271_STATE_OFF)) {
3187 ret = -EAGAIN;
3188 goto out;
3189 }
3190
3191 ret = wl1271_ps_elp_wakeup(wl);
3192 if (ret < 0)
3193 goto out;
3194
3195 wl12xx_for_each_wlvif(wl, wlvif) {
3196 ret = wl1271_acx_rts_threshold(wl, wlvif, value);
3197 if (ret < 0)
3198 wl1271_warning("set rts threshold failed: %d", ret);
3199 }
3200 wl1271_ps_elp_sleep(wl);
3201
3202 out:
3203 mutex_unlock(&wl->mutex);
3204
3205 return ret;
3206 }
3207
3208 static int wl1271_ssid_set(struct ieee80211_vif *vif, struct sk_buff *skb,
3209 int offset)
3210 {
3211 struct wl12xx_vif *wlvif = wl12xx_vif_to_data(vif);
3212 u8 ssid_len;
3213 const u8 *ptr = cfg80211_find_ie(WLAN_EID_SSID, skb->data + offset,
3214 skb->len - offset);
3215
3216 if (!ptr) {
3217 wl1271_error("No SSID in IEs!");
3218 return -ENOENT;
3219 }
3220
3221 ssid_len = ptr[1];
3222 if (ssid_len > IEEE80211_MAX_SSID_LEN) {
3223 wl1271_error("SSID is too long!");
3224 return -EINVAL;
3225 }
3226
3227 wlvif->ssid_len = ssid_len;
3228 memcpy(wlvif->ssid, ptr+2, ssid_len);
3229 return 0;
3230 }
3231
3232 static void wl12xx_remove_ie(struct sk_buff *skb, u8 eid, int ieoffset)
3233 {
3234 int len;
3235 const u8 *next, *end = skb->data + skb->len;
3236 u8 *ie = (u8 *)cfg80211_find_ie(eid, skb->data + ieoffset,
3237 skb->len - ieoffset);
3238 if (!ie)
3239 return;
3240 len = ie[1] + 2;
3241 next = ie + len;
3242 memmove(ie, next, end - next);
3243 skb_trim(skb, skb->len - len);
3244 }
3245
3246 static void wl12xx_remove_vendor_ie(struct sk_buff *skb,
3247 unsigned int oui, u8 oui_type,
3248 int ieoffset)
3249 {
3250 int len;
3251 const u8 *next, *end = skb->data + skb->len;
3252 u8 *ie = (u8 *)cfg80211_find_vendor_ie(oui, oui_type,
3253 skb->data + ieoffset,
3254 skb->len - ieoffset);
3255 if (!ie)
3256 return;
3257 len = ie[1] + 2;
3258 next = ie + len;
3259 memmove(ie, next, end - next);
3260 skb_trim(skb, skb->len - len);
3261 }
3262
3263 static int wl1271_ap_set_probe_resp_tmpl(struct wl1271 *wl, u32 rates,
3264 struct ieee80211_vif *vif)
3265 {
3266 struct sk_buff *skb;
3267 int ret;
3268
3269 skb = ieee80211_proberesp_get(wl->hw, vif);
3270 if (!skb)
3271 return -EOPNOTSUPP;
3272
3273 ret = wl1271_cmd_template_set(wl,
3274 CMD_TEMPL_AP_PROBE_RESPONSE,
3275 skb->data,
3276 skb->len, 0,
3277 rates);
3278
3279 dev_kfree_skb(skb);
3280 return ret;
3281 }
3282
3283 static int wl1271_ap_set_probe_resp_tmpl_legacy(struct wl1271 *wl,
3284 struct ieee80211_vif *vif,
3285 u8 *probe_rsp_data,
3286 size_t probe_rsp_len,
3287 u32 rates)
3288 {
3289 struct wl12xx_vif *wlvif = wl12xx_vif_to_data(vif);
3290 struct ieee80211_bss_conf *bss_conf = &vif->bss_conf;
3291 u8 probe_rsp_templ[WL1271_CMD_TEMPL_MAX_SIZE];
3292 int ssid_ie_offset, ie_offset, templ_len;
3293 const u8 *ptr;
3294
3295 /* no need to change probe response if the SSID is set correctly */
3296 if (wlvif->ssid_len > 0)
3297 return wl1271_cmd_template_set(wl,
3298 CMD_TEMPL_AP_PROBE_RESPONSE,
3299 probe_rsp_data,
3300 probe_rsp_len, 0,
3301 rates);
3302
3303 if (probe_rsp_len + bss_conf->ssid_len > WL1271_CMD_TEMPL_MAX_SIZE) {
3304 wl1271_error("probe_rsp template too big");
3305 return -EINVAL;
3306 }
3307
3308 /* start searching from IE offset */
3309 ie_offset = offsetof(struct ieee80211_mgmt, u.probe_resp.variable);
3310
3311 ptr = cfg80211_find_ie(WLAN_EID_SSID, probe_rsp_data + ie_offset,
3312 probe_rsp_len - ie_offset);
3313 if (!ptr) {
3314 wl1271_error("No SSID in beacon!");
3315 return -EINVAL;
3316 }
3317
3318 ssid_ie_offset = ptr - probe_rsp_data;
3319 ptr += (ptr[1] + 2);
3320
3321 memcpy(probe_rsp_templ, probe_rsp_data, ssid_ie_offset);
3322
3323 /* insert SSID from bss_conf */
3324 probe_rsp_templ[ssid_ie_offset] = WLAN_EID_SSID;
3325 probe_rsp_templ[ssid_ie_offset + 1] = bss_conf->ssid_len;
3326 memcpy(probe_rsp_templ + ssid_ie_offset + 2,
3327 bss_conf->ssid, bss_conf->ssid_len);
3328 templ_len = ssid_ie_offset + 2 + bss_conf->ssid_len;
3329
3330 memcpy(probe_rsp_templ + ssid_ie_offset + 2 + bss_conf->ssid_len,
3331 ptr, probe_rsp_len - (ptr - probe_rsp_data));
3332 templ_len += probe_rsp_len - (ptr - probe_rsp_data);
3333
3334 return wl1271_cmd_template_set(wl,
3335 CMD_TEMPL_AP_PROBE_RESPONSE,
3336 probe_rsp_templ,
3337 templ_len, 0,
3338 rates);
3339 }
3340
3341 static int wl1271_bss_erp_info_changed(struct wl1271 *wl,
3342 struct ieee80211_vif *vif,
3343 struct ieee80211_bss_conf *bss_conf,
3344 u32 changed)
3345 {
3346 struct wl12xx_vif *wlvif = wl12xx_vif_to_data(vif);
3347 int ret = 0;
3348
3349 if (changed & BSS_CHANGED_ERP_SLOT) {
3350 if (bss_conf->use_short_slot)
3351 ret = wl1271_acx_slot(wl, wlvif, SLOT_TIME_SHORT);
3352 else
3353 ret = wl1271_acx_slot(wl, wlvif, SLOT_TIME_LONG);
3354 if (ret < 0) {
3355 wl1271_warning("Set slot time failed %d", ret);
3356 goto out;
3357 }
3358 }
3359
3360 if (changed & BSS_CHANGED_ERP_PREAMBLE) {
3361 if (bss_conf->use_short_preamble)
3362 wl1271_acx_set_preamble(wl, wlvif, ACX_PREAMBLE_SHORT);
3363 else
3364 wl1271_acx_set_preamble(wl, wlvif, ACX_PREAMBLE_LONG);
3365 }
3366
3367 if (changed & BSS_CHANGED_ERP_CTS_PROT) {
3368 if (bss_conf->use_cts_prot)
3369 ret = wl1271_acx_cts_protect(wl, wlvif,
3370 CTSPROTECT_ENABLE);
3371 else
3372 ret = wl1271_acx_cts_protect(wl, wlvif,
3373 CTSPROTECT_DISABLE);
3374 if (ret < 0) {
3375 wl1271_warning("Set ctsprotect failed %d", ret);
3376 goto out;
3377 }
3378 }
3379
3380 out:
3381 return ret;
3382 }
3383
3384 static int wl1271_bss_beacon_info_changed(struct wl1271 *wl,
3385 struct ieee80211_vif *vif,
3386 struct ieee80211_bss_conf *bss_conf,
3387 u32 changed)
3388 {
3389 struct wl12xx_vif *wlvif = wl12xx_vif_to_data(vif);
3390 bool is_ap = (wlvif->bss_type == BSS_TYPE_AP_BSS);
3391 int ret = 0;
3392
3393 if ((changed & BSS_CHANGED_BEACON_INT)) {
3394 wl1271_debug(DEBUG_MASTER, "beacon interval updated: %d",
3395 bss_conf->beacon_int);
3396
3397 wlvif->beacon_int = bss_conf->beacon_int;
3398 }
3399
3400 if ((changed & BSS_CHANGED_AP_PROBE_RESP) && is_ap) {
3401 u32 rate = wl1271_tx_min_rate_get(wl, wlvif->basic_rate_set);
3402 if (!wl1271_ap_set_probe_resp_tmpl(wl, rate, vif)) {
3403 wl1271_debug(DEBUG_AP, "probe response updated");
3404 set_bit(WLVIF_FLAG_AP_PROBE_RESP_SET, &wlvif->flags);
3405 }
3406 }
3407
3408 if ((changed & BSS_CHANGED_BEACON)) {
3409 struct ieee80211_hdr *hdr;
3410 u32 min_rate;
3411 int ieoffset = offsetof(struct ieee80211_mgmt,
3412 u.beacon.variable);
3413 struct sk_buff *beacon = ieee80211_beacon_get(wl->hw, vif);
3414 u16 tmpl_id;
3415
3416 if (!beacon) {
3417 ret = -EINVAL;
3418 goto out;
3419 }
3420
3421 wl1271_debug(DEBUG_MASTER, "beacon updated");
3422
3423 ret = wl1271_ssid_set(vif, beacon, ieoffset);
3424 if (ret < 0) {
3425 dev_kfree_skb(beacon);
3426 goto out;
3427 }
3428 min_rate = wl1271_tx_min_rate_get(wl, wlvif->basic_rate_set);
3429 tmpl_id = is_ap ? CMD_TEMPL_AP_BEACON :
3430 CMD_TEMPL_BEACON;
3431 ret = wl1271_cmd_template_set(wl, tmpl_id,
3432 beacon->data,
3433 beacon->len, 0,
3434 min_rate);
3435 if (ret < 0) {
3436 dev_kfree_skb(beacon);
3437 goto out;
3438 }
3439
3440 /*
3441 * In case we already have a probe-resp beacon set explicitly
3442 * by usermode, don't use the beacon data.
3443 */
3444 if (test_bit(WLVIF_FLAG_AP_PROBE_RESP_SET, &wlvif->flags))
3445 goto end_bcn;
3446
3447 /* remove TIM ie from probe response */
3448 wl12xx_remove_ie(beacon, WLAN_EID_TIM, ieoffset);
3449
3450 /*
3451 * remove p2p ie from probe response.
3452 * the fw reponds to probe requests that don't include
3453 * the p2p ie. probe requests with p2p ie will be passed,
3454 * and will be responded by the supplicant (the spec
3455 * forbids including the p2p ie when responding to probe
3456 * requests that didn't include it).
3457 */
3458 wl12xx_remove_vendor_ie(beacon, WLAN_OUI_WFA,
3459 WLAN_OUI_TYPE_WFA_P2P, ieoffset);
3460
3461 hdr = (struct ieee80211_hdr *) beacon->data;
3462 hdr->frame_control = cpu_to_le16(IEEE80211_FTYPE_MGMT |
3463 IEEE80211_STYPE_PROBE_RESP);
3464 if (is_ap)
3465 ret = wl1271_ap_set_probe_resp_tmpl_legacy(wl, vif,
3466 beacon->data,
3467 beacon->len,
3468 min_rate);
3469 else
3470 ret = wl1271_cmd_template_set(wl,
3471 CMD_TEMPL_PROBE_RESPONSE,
3472 beacon->data,
3473 beacon->len, 0,
3474 min_rate);
3475 end_bcn:
3476 dev_kfree_skb(beacon);
3477 if (ret < 0)
3478 goto out;
3479 }
3480
3481 out:
3482 if (ret != 0)
3483 wl1271_error("beacon info change failed: %d", ret);
3484 return ret;
3485 }
3486
3487 /* AP mode changes */
3488 static void wl1271_bss_info_changed_ap(struct wl1271 *wl,
3489 struct ieee80211_vif *vif,
3490 struct ieee80211_bss_conf *bss_conf,
3491 u32 changed)
3492 {
3493 struct wl12xx_vif *wlvif = wl12xx_vif_to_data(vif);
3494 int ret = 0;
3495
3496 if ((changed & BSS_CHANGED_BASIC_RATES)) {
3497 u32 rates = bss_conf->basic_rates;
3498
3499 wlvif->basic_rate_set = wl1271_tx_enabled_rates_get(wl, rates,
3500 wlvif->band);
3501 wlvif->basic_rate = wl1271_tx_min_rate_get(wl,
3502 wlvif->basic_rate_set);
3503
3504 ret = wl1271_init_ap_rates(wl, wlvif);
3505 if (ret < 0) {
3506 wl1271_error("AP rate policy change failed %d", ret);
3507 goto out;
3508 }
3509
3510 ret = wl1271_ap_init_templates(wl, vif);
3511 if (ret < 0)
3512 goto out;
3513 }
3514
3515 ret = wl1271_bss_beacon_info_changed(wl, vif, bss_conf, changed);
3516 if (ret < 0)
3517 goto out;
3518
3519 if ((changed & BSS_CHANGED_BEACON_ENABLED)) {
3520 if (bss_conf->enable_beacon) {
3521 if (!test_bit(WLVIF_FLAG_AP_STARTED, &wlvif->flags)) {
3522 ret = wl12xx_cmd_role_start_ap(wl, wlvif);
3523 if (ret < 0)
3524 goto out;
3525
3526 ret = wl1271_ap_init_hwenc(wl, wlvif);
3527 if (ret < 0)
3528 goto out;
3529
3530 set_bit(WLVIF_FLAG_AP_STARTED, &wlvif->flags);
3531 wl1271_debug(DEBUG_AP, "started AP");
3532 }
3533 } else {
3534 if (test_bit(WLVIF_FLAG_AP_STARTED, &wlvif->flags)) {
3535 ret = wl12xx_cmd_role_stop_ap(wl, wlvif);
3536 if (ret < 0)
3537 goto out;
3538
3539 clear_bit(WLVIF_FLAG_AP_STARTED, &wlvif->flags);
3540 clear_bit(WLVIF_FLAG_AP_PROBE_RESP_SET,
3541 &wlvif->flags);
3542 wl1271_debug(DEBUG_AP, "stopped AP");
3543 }
3544 }
3545 }
3546
3547 ret = wl1271_bss_erp_info_changed(wl, vif, bss_conf, changed);
3548 if (ret < 0)
3549 goto out;
3550
3551 /* Handle HT information change */
3552 if ((changed & BSS_CHANGED_HT) &&
3553 (bss_conf->channel_type != NL80211_CHAN_NO_HT)) {
3554 ret = wl1271_acx_set_ht_information(wl, wlvif,
3555 bss_conf->ht_operation_mode);
3556 if (ret < 0) {
3557 wl1271_warning("Set ht information failed %d", ret);
3558 goto out;
3559 }
3560 }
3561
3562 out:
3563 return;
3564 }
3565
3566 /* STA/IBSS mode changes */
3567 static void wl1271_bss_info_changed_sta(struct wl1271 *wl,
3568 struct ieee80211_vif *vif,
3569 struct ieee80211_bss_conf *bss_conf,
3570 u32 changed)
3571 {
3572 struct wl12xx_vif *wlvif = wl12xx_vif_to_data(vif);
3573 bool do_join = false, set_assoc = false;
3574 bool is_ibss = (wlvif->bss_type == BSS_TYPE_IBSS);
3575 bool ibss_joined = false;
3576 u32 sta_rate_set = 0;
3577 int ret;
3578 struct ieee80211_sta *sta;
3579 bool sta_exists = false;
3580 struct ieee80211_sta_ht_cap sta_ht_cap;
3581
3582 if (is_ibss) {
3583 ret = wl1271_bss_beacon_info_changed(wl, vif, bss_conf,
3584 changed);
3585 if (ret < 0)
3586 goto out;
3587 }
3588
3589 if (changed & BSS_CHANGED_IBSS) {
3590 if (bss_conf->ibss_joined) {
3591 set_bit(WLVIF_FLAG_IBSS_JOINED, &wlvif->flags);
3592 ibss_joined = true;
3593 } else {
3594 if (test_and_clear_bit(WLVIF_FLAG_IBSS_JOINED,
3595 &wlvif->flags)) {
3596 wl1271_unjoin(wl, wlvif);
3597 wl12xx_start_dev(wl, wlvif);
3598 }
3599 }
3600 }
3601
3602 if ((changed & BSS_CHANGED_BEACON_INT) && ibss_joined)
3603 do_join = true;
3604
3605 /* Need to update the SSID (for filtering etc) */
3606 if ((changed & BSS_CHANGED_BEACON) && ibss_joined)
3607 do_join = true;
3608
3609 if ((changed & BSS_CHANGED_BEACON_ENABLED) && ibss_joined) {
3610 wl1271_debug(DEBUG_ADHOC, "ad-hoc beaconing: %s",
3611 bss_conf->enable_beacon ? "enabled" : "disabled");
3612
3613 do_join = true;
3614 }
3615
3616 if (changed & BSS_CHANGED_IDLE) {
3617 ret = wl1271_sta_handle_idle(wl, wlvif, bss_conf->idle);
3618 if (ret < 0)
3619 wl1271_warning("idle mode change failed %d", ret);
3620 }
3621
3622 if ((changed & BSS_CHANGED_CQM)) {
3623 bool enable = false;
3624 if (bss_conf->cqm_rssi_thold)
3625 enable = true;
3626 ret = wl1271_acx_rssi_snr_trigger(wl, wlvif, enable,
3627 bss_conf->cqm_rssi_thold,
3628 bss_conf->cqm_rssi_hyst);
3629 if (ret < 0)
3630 goto out;
3631 wlvif->rssi_thold = bss_conf->cqm_rssi_thold;
3632 }
3633
3634 if (changed & BSS_CHANGED_BSSID)
3635 if (!is_zero_ether_addr(bss_conf->bssid)) {
3636 ret = wl12xx_cmd_build_null_data(wl, wlvif);
3637 if (ret < 0)
3638 goto out;
3639
3640 ret = wl1271_build_qos_null_data(wl, vif);
3641 if (ret < 0)
3642 goto out;
3643
3644 /* Need to update the BSSID (for filtering etc) */
3645 do_join = true;
3646 }
3647
3648 if (changed & (BSS_CHANGED_ASSOC | BSS_CHANGED_HT)) {
3649 rcu_read_lock();
3650 sta = ieee80211_find_sta(vif, bss_conf->bssid);
3651 if (!sta)
3652 goto sta_not_found;
3653
3654 /* save the supp_rates of the ap */
3655 sta_rate_set = sta->supp_rates[wl->hw->conf.channel->band];
3656 if (sta->ht_cap.ht_supported)
3657 sta_rate_set |=
3658 (sta->ht_cap.mcs.rx_mask[0] << HW_HT_RATES_OFFSET);
3659 sta_ht_cap = sta->ht_cap;
3660 sta_exists = true;
3661
3662 sta_not_found:
3663 rcu_read_unlock();
3664 }
3665
3666 if ((changed & BSS_CHANGED_ASSOC)) {
3667 if (bss_conf->assoc) {
3668 u32 rates;
3669 int ieoffset;
3670 wlvif->aid = bss_conf->aid;
3671 set_assoc = true;
3672
3673 wlvif->ps_poll_failures = 0;
3674
3675 /*
3676 * use basic rates from AP, and determine lowest rate
3677 * to use with control frames.
3678 */
3679 rates = bss_conf->basic_rates;
3680 wlvif->basic_rate_set =
3681 wl1271_tx_enabled_rates_get(wl, rates,
3682 wlvif->band);
3683 wlvif->basic_rate =
3684 wl1271_tx_min_rate_get(wl,
3685 wlvif->basic_rate_set);
3686 if (sta_rate_set)
3687 wlvif->rate_set =
3688 wl1271_tx_enabled_rates_get(wl,
3689 sta_rate_set,
3690 wlvif->band);
3691 ret = wl1271_acx_sta_rate_policies(wl, wlvif);
3692 if (ret < 0)
3693 goto out;
3694
3695 /*
3696 * with wl1271, we don't need to update the
3697 * beacon_int and dtim_period, because the firmware
3698 * updates it by itself when the first beacon is
3699 * received after a join.
3700 */
3701 ret = wl1271_cmd_build_ps_poll(wl, wlvif, wlvif->aid);
3702 if (ret < 0)
3703 goto out;
3704
3705 /*
3706 * Get a template for hardware connection maintenance
3707 */
3708 dev_kfree_skb(wlvif->probereq);
3709 wlvif->probereq = wl1271_cmd_build_ap_probe_req(wl,
3710 wlvif,
3711 NULL);
3712 ieoffset = offsetof(struct ieee80211_mgmt,
3713 u.probe_req.variable);
3714 wl1271_ssid_set(vif, wlvif->probereq, ieoffset);
3715
3716 /* enable the connection monitoring feature */
3717 ret = wl1271_acx_conn_monit_params(wl, wlvif, true);
3718 if (ret < 0)
3719 goto out;
3720 } else {
3721 /* use defaults when not associated */
3722 bool was_assoc =
3723 !!test_and_clear_bit(WLVIF_FLAG_STA_ASSOCIATED,
3724 &wlvif->flags);
3725 bool was_ifup =
3726 !!test_and_clear_bit(WLVIF_FLAG_STA_STATE_SENT,
3727 &wlvif->flags);
3728 wlvif->aid = 0;
3729
3730 /* free probe-request template */
3731 dev_kfree_skb(wlvif->probereq);
3732 wlvif->probereq = NULL;
3733
3734 /* re-enable dynamic ps - just in case */
3735 ieee80211_enable_dyn_ps(vif);
3736
3737 /* revert back to minimum rates for the current band */
3738 wl1271_set_band_rate(wl, wlvif);
3739 wlvif->basic_rate =
3740 wl1271_tx_min_rate_get(wl,
3741 wlvif->basic_rate_set);
3742 ret = wl1271_acx_sta_rate_policies(wl, wlvif);
3743 if (ret < 0)
3744 goto out;
3745
3746 /* disable connection monitor features */
3747 ret = wl1271_acx_conn_monit_params(wl, wlvif, false);
3748
3749 /* Disable the keep-alive feature */
3750 ret = wl1271_acx_keep_alive_mode(wl, wlvif, false);
3751 if (ret < 0)
3752 goto out;
3753
3754 /* restore the bssid filter and go to dummy bssid */
3755 if (was_assoc) {
3756 u32 conf_flags = wl->hw->conf.flags;
3757 /*
3758 * we might have to disable roc, if there was
3759 * no IF_OPER_UP notification.
3760 */
3761 if (!was_ifup) {
3762 ret = wl12xx_croc(wl, wlvif->role_id);
3763 if (ret < 0)
3764 goto out;
3765 }
3766 /*
3767 * (we also need to disable roc in case of
3768 * roaming on the same channel. until we will
3769 * have a better flow...)
3770 */
3771 if (test_bit(wlvif->dev_role_id, wl->roc_map)) {
3772 ret = wl12xx_croc(wl,
3773 wlvif->dev_role_id);
3774 if (ret < 0)
3775 goto out;
3776 }
3777
3778 wl1271_unjoin(wl, wlvif);
3779 if (!(conf_flags & IEEE80211_CONF_IDLE))
3780 wl12xx_start_dev(wl, wlvif);
3781 }
3782 }
3783 }
3784
3785 if (changed & BSS_CHANGED_IBSS) {
3786 wl1271_debug(DEBUG_ADHOC, "ibss_joined: %d",
3787 bss_conf->ibss_joined);
3788
3789 if (bss_conf->ibss_joined) {
3790 u32 rates = bss_conf->basic_rates;
3791 wlvif->basic_rate_set =
3792 wl1271_tx_enabled_rates_get(wl, rates,
3793 wlvif->band);
3794 wlvif->basic_rate =
3795 wl1271_tx_min_rate_get(wl,
3796 wlvif->basic_rate_set);
3797
3798 /* by default, use 11b + OFDM rates */
3799 wlvif->rate_set = CONF_TX_IBSS_DEFAULT_RATES;
3800 ret = wl1271_acx_sta_rate_policies(wl, wlvif);
3801 if (ret < 0)
3802 goto out;
3803 }
3804 }
3805
3806 ret = wl1271_bss_erp_info_changed(wl, vif, bss_conf, changed);
3807 if (ret < 0)
3808 goto out;
3809
3810 if (changed & BSS_CHANGED_ARP_FILTER) {
3811 __be32 addr = bss_conf->arp_addr_list[0];
3812 WARN_ON(wlvif->bss_type != BSS_TYPE_STA_BSS);
3813
3814 if (bss_conf->arp_addr_cnt == 1 &&
3815 bss_conf->arp_filter_enabled) {
3816 /*
3817 * The template should have been configured only upon
3818 * association. however, it seems that the correct ip
3819 * isn't being set (when sending), so we have to
3820 * reconfigure the template upon every ip change.
3821 */
3822 ret = wl1271_cmd_build_arp_rsp(wl, wlvif, addr);
3823 if (ret < 0) {
3824 wl1271_warning("build arp rsp failed: %d", ret);
3825 goto out;
3826 }
3827
3828 ret = wl1271_acx_arp_ip_filter(wl, wlvif,
3829 ACX_ARP_FILTER_ARP_FILTERING,
3830 addr);
3831 } else
3832 ret = wl1271_acx_arp_ip_filter(wl, wlvif, 0, addr);
3833
3834 if (ret < 0)
3835 goto out;
3836 }
3837
3838 if (do_join) {
3839 ret = wl1271_join(wl, wlvif, set_assoc);
3840 if (ret < 0) {
3841 wl1271_warning("cmd join failed %d", ret);
3842 goto out;
3843 }
3844
3845 /* ROC until connected (after EAPOL exchange) */
3846 if (!is_ibss) {
3847 ret = wl12xx_roc(wl, wlvif, wlvif->role_id);
3848 if (ret < 0)
3849 goto out;
3850
3851 wl1271_check_operstate(wl, wlvif,
3852 ieee80211_get_operstate(vif));
3853 }
3854 /*
3855 * stop device role if started (we might already be in
3856 * STA/IBSS role).
3857 */
3858 if (wl12xx_dev_role_started(wlvif)) {
3859 ret = wl12xx_stop_dev(wl, wlvif);
3860 if (ret < 0)
3861 goto out;
3862 }
3863
3864 /* If we want to go in PSM but we're not there yet */
3865 if (test_bit(WLVIF_FLAG_PSM_REQUESTED, &wlvif->flags) &&
3866 !test_bit(WLVIF_FLAG_PSM, &wlvif->flags)) {
3867 enum wl1271_cmd_ps_mode mode;
3868
3869 mode = STATION_POWER_SAVE_MODE;
3870 ret = wl1271_ps_set_mode(wl, wlvif, mode,
3871 wlvif->basic_rate,
3872 true);
3873 if (ret < 0)
3874 goto out;
3875 }
3876 }
3877
3878 /* Handle new association with HT. Do this after join. */
3879 if (sta_exists) {
3880 if ((changed & BSS_CHANGED_HT) &&
3881 (bss_conf->channel_type != NL80211_CHAN_NO_HT)) {
3882 ret = wl1271_acx_set_ht_capabilities(wl,
3883 &sta_ht_cap,
3884 true,
3885 wlvif->sta.hlid);
3886 if (ret < 0) {
3887 wl1271_warning("Set ht cap true failed %d",
3888 ret);
3889 goto out;
3890 }
3891 }
3892 /* handle new association without HT and disassociation */
3893 else if (changed & BSS_CHANGED_ASSOC) {
3894 ret = wl1271_acx_set_ht_capabilities(wl,
3895 &sta_ht_cap,
3896 false,
3897 wlvif->sta.hlid);
3898 if (ret < 0) {
3899 wl1271_warning("Set ht cap false failed %d",
3900 ret);
3901 goto out;
3902 }
3903 }
3904 }
3905
3906 /* Handle HT information change. Done after join. */
3907 if ((changed & BSS_CHANGED_HT) &&
3908 (bss_conf->channel_type != NL80211_CHAN_NO_HT)) {
3909 ret = wl1271_acx_set_ht_information(wl, wlvif,
3910 bss_conf->ht_operation_mode);
3911 if (ret < 0) {
3912 wl1271_warning("Set ht information failed %d", ret);
3913 goto out;
3914 }
3915 }
3916
3917 out:
3918 return;
3919 }
3920
3921 static void wl1271_op_bss_info_changed(struct ieee80211_hw *hw,
3922 struct ieee80211_vif *vif,
3923 struct ieee80211_bss_conf *bss_conf,
3924 u32 changed)
3925 {
3926 struct wl1271 *wl = hw->priv;
3927 struct wl12xx_vif *wlvif = wl12xx_vif_to_data(vif);
3928 bool is_ap = (wlvif->bss_type == BSS_TYPE_AP_BSS);
3929 int ret;
3930
3931 wl1271_debug(DEBUG_MAC80211, "mac80211 bss info changed 0x%x",
3932 (int)changed);
3933
3934 mutex_lock(&wl->mutex);
3935
3936 if (unlikely(wl->state == WL1271_STATE_OFF))
3937 goto out;
3938
3939 if (unlikely(!test_bit(WLVIF_FLAG_INITIALIZED, &wlvif->flags)))
3940 goto out;
3941
3942 ret = wl1271_ps_elp_wakeup(wl);
3943 if (ret < 0)
3944 goto out;
3945
3946 if (is_ap)
3947 wl1271_bss_info_changed_ap(wl, vif, bss_conf, changed);
3948 else
3949 wl1271_bss_info_changed_sta(wl, vif, bss_conf, changed);
3950
3951 wl1271_ps_elp_sleep(wl);
3952
3953 out:
3954 mutex_unlock(&wl->mutex);
3955 }
3956
3957 static int wl1271_op_conf_tx(struct ieee80211_hw *hw,
3958 struct ieee80211_vif *vif, u16 queue,
3959 const struct ieee80211_tx_queue_params *params)
3960 {
3961 struct wl1271 *wl = hw->priv;
3962 struct wl12xx_vif *wlvif = wl12xx_vif_to_data(vif);
3963 u8 ps_scheme;
3964 int ret = 0;
3965
3966 mutex_lock(&wl->mutex);
3967
3968 wl1271_debug(DEBUG_MAC80211, "mac80211 conf tx %d", queue);
3969
3970 if (params->uapsd)
3971 ps_scheme = CONF_PS_SCHEME_UPSD_TRIGGER;
3972 else
3973 ps_scheme = CONF_PS_SCHEME_LEGACY;
3974
3975 if (!test_bit(WLVIF_FLAG_INITIALIZED, &wlvif->flags))
3976 goto out;
3977
3978 ret = wl1271_ps_elp_wakeup(wl);
3979 if (ret < 0)
3980 goto out;
3981
3982 /*
3983 * the txop is confed in units of 32us by the mac80211,
3984 * we need us
3985 */
3986 ret = wl1271_acx_ac_cfg(wl, wlvif, wl1271_tx_get_queue(queue),
3987 params->cw_min, params->cw_max,
3988 params->aifs, params->txop << 5);
3989 if (ret < 0)
3990 goto out_sleep;
3991
3992 ret = wl1271_acx_tid_cfg(wl, wlvif, wl1271_tx_get_queue(queue),
3993 CONF_CHANNEL_TYPE_EDCF,
3994 wl1271_tx_get_queue(queue),
3995 ps_scheme, CONF_ACK_POLICY_LEGACY,
3996 0, 0);
3997
3998 out_sleep:
3999 wl1271_ps_elp_sleep(wl);
4000
4001 out:
4002 mutex_unlock(&wl->mutex);
4003
4004 return ret;
4005 }
4006
4007 static u64 wl1271_op_get_tsf(struct ieee80211_hw *hw,
4008 struct ieee80211_vif *vif)
4009 {
4010
4011 struct wl1271 *wl = hw->priv;
4012 u64 mactime = ULLONG_MAX;
4013 int ret;
4014
4015 wl1271_debug(DEBUG_MAC80211, "mac80211 get tsf");
4016
4017 mutex_lock(&wl->mutex);
4018
4019 if (unlikely(wl->state == WL1271_STATE_OFF))
4020 goto out;
4021
4022 ret = wl1271_ps_elp_wakeup(wl);
4023 if (ret < 0)
4024 goto out;
4025
4026 ret = wl1271_acx_tsf_info(wl, &mactime);
4027 if (ret < 0)
4028 goto out_sleep;
4029
4030 out_sleep:
4031 wl1271_ps_elp_sleep(wl);
4032
4033 out:
4034 mutex_unlock(&wl->mutex);
4035 return mactime;
4036 }
4037
4038 static int wl1271_op_get_survey(struct ieee80211_hw *hw, int idx,
4039 struct survey_info *survey)
4040 {
4041 struct wl1271 *wl = hw->priv;
4042 struct ieee80211_conf *conf = &hw->conf;
4043
4044 if (idx != 0)
4045 return -ENOENT;
4046
4047 survey->channel = conf->channel;
4048 survey->filled = SURVEY_INFO_NOISE_DBM;
4049 survey->noise = wl->noise;
4050
4051 return 0;
4052 }
4053
4054 static int wl1271_allocate_sta(struct wl1271 *wl,
4055 struct wl12xx_vif *wlvif,
4056 struct ieee80211_sta *sta)
4057 {
4058 struct wl1271_station *wl_sta;
4059 int ret;
4060
4061
4062 if (wl->active_sta_count >= AP_MAX_STATIONS) {
4063 wl1271_warning("could not allocate HLID - too much stations");
4064 return -EBUSY;
4065 }
4066
4067 wl_sta = (struct wl1271_station *)sta->drv_priv;
4068 ret = wl12xx_allocate_link(wl, wlvif, &wl_sta->hlid);
4069 if (ret < 0) {
4070 wl1271_warning("could not allocate HLID - too many links");
4071 return -EBUSY;
4072 }
4073
4074 set_bit(wl_sta->hlid, wlvif->ap.sta_hlid_map);
4075 memcpy(wl->links[wl_sta->hlid].addr, sta->addr, ETH_ALEN);
4076 wl->active_sta_count++;
4077 return 0;
4078 }
4079
4080 void wl1271_free_sta(struct wl1271 *wl, struct wl12xx_vif *wlvif, u8 hlid)
4081 {
4082 if (!test_bit(hlid, wlvif->ap.sta_hlid_map))
4083 return;
4084
4085 clear_bit(hlid, wlvif->ap.sta_hlid_map);
4086 memset(wl->links[hlid].addr, 0, ETH_ALEN);
4087 wl->links[hlid].ba_bitmap = 0;
4088 wl1271_tx_reset_link_queues(wl, hlid);
4089 __clear_bit(hlid, &wl->ap_ps_map);
4090 __clear_bit(hlid, (unsigned long *)&wl->ap_fw_ps_map);
4091 wl12xx_free_link(wl, wlvif, &hlid);
4092 wl->active_sta_count--;
4093 }
4094
4095 static int wl1271_op_sta_add(struct ieee80211_hw *hw,
4096 struct ieee80211_vif *vif,
4097 struct ieee80211_sta *sta)
4098 {
4099 struct wl1271 *wl = hw->priv;
4100 struct wl12xx_vif *wlvif = wl12xx_vif_to_data(vif);
4101 struct wl1271_station *wl_sta;
4102 int ret = 0;
4103 u8 hlid;
4104
4105 mutex_lock(&wl->mutex);
4106
4107 if (unlikely(wl->state == WL1271_STATE_OFF))
4108 goto out;
4109
4110 if (wlvif->bss_type != BSS_TYPE_AP_BSS)
4111 goto out;
4112
4113 wl1271_debug(DEBUG_MAC80211, "mac80211 add sta %d", (int)sta->aid);
4114
4115 ret = wl1271_allocate_sta(wl, wlvif, sta);
4116 if (ret < 0)
4117 goto out;
4118
4119 wl_sta = (struct wl1271_station *)sta->drv_priv;
4120 hlid = wl_sta->hlid;
4121
4122 ret = wl1271_ps_elp_wakeup(wl);
4123 if (ret < 0)
4124 goto out_free_sta;
4125
4126 ret = wl12xx_cmd_add_peer(wl, wlvif, sta, hlid);
4127 if (ret < 0)
4128 goto out_sleep;
4129
4130 ret = wl12xx_cmd_set_peer_state(wl, hlid);
4131 if (ret < 0)
4132 goto out_sleep;
4133
4134 ret = wl1271_acx_set_ht_capabilities(wl, &sta->ht_cap, true, hlid);
4135 if (ret < 0)
4136 goto out_sleep;
4137
4138 out_sleep:
4139 wl1271_ps_elp_sleep(wl);
4140
4141 out_free_sta:
4142 if (ret < 0)
4143 wl1271_free_sta(wl, wlvif, hlid);
4144
4145 out:
4146 mutex_unlock(&wl->mutex);
4147 return ret;
4148 }
4149
4150 static int wl1271_op_sta_remove(struct ieee80211_hw *hw,
4151 struct ieee80211_vif *vif,
4152 struct ieee80211_sta *sta)
4153 {
4154 struct wl1271 *wl = hw->priv;
4155 struct wl12xx_vif *wlvif = wl12xx_vif_to_data(vif);
4156 struct wl1271_station *wl_sta;
4157 int ret = 0, id;
4158
4159 mutex_lock(&wl->mutex);
4160
4161 if (unlikely(wl->state == WL1271_STATE_OFF))
4162 goto out;
4163
4164 if (wlvif->bss_type != BSS_TYPE_AP_BSS)
4165 goto out;
4166
4167 wl1271_debug(DEBUG_MAC80211, "mac80211 remove sta %d", (int)sta->aid);
4168
4169 wl_sta = (struct wl1271_station *)sta->drv_priv;
4170 id = wl_sta->hlid;
4171 if (WARN_ON(!test_bit(id, wlvif->ap.sta_hlid_map)))
4172 goto out;
4173
4174 ret = wl1271_ps_elp_wakeup(wl);
4175 if (ret < 0)
4176 goto out;
4177
4178 ret = wl12xx_cmd_remove_peer(wl, wl_sta->hlid);
4179 if (ret < 0)
4180 goto out_sleep;
4181
4182 wl1271_free_sta(wl, wlvif, wl_sta->hlid);
4183
4184 out_sleep:
4185 wl1271_ps_elp_sleep(wl);
4186
4187 out:
4188 mutex_unlock(&wl->mutex);
4189 return ret;
4190 }
4191
4192 static int wl1271_op_ampdu_action(struct ieee80211_hw *hw,
4193 struct ieee80211_vif *vif,
4194 enum ieee80211_ampdu_mlme_action action,
4195 struct ieee80211_sta *sta, u16 tid, u16 *ssn,
4196 u8 buf_size)
4197 {
4198 struct wl1271 *wl = hw->priv;
4199 struct wl12xx_vif *wlvif = wl12xx_vif_to_data(vif);
4200 int ret;
4201 u8 hlid, *ba_bitmap;
4202
4203 wl1271_debug(DEBUG_MAC80211, "mac80211 ampdu action %d tid %d", action,
4204 tid);
4205
4206 /* sanity check - the fields in FW are only 8bits wide */
4207 if (WARN_ON(tid > 0xFF))
4208 return -ENOTSUPP;
4209
4210 mutex_lock(&wl->mutex);
4211
4212 if (unlikely(wl->state == WL1271_STATE_OFF)) {
4213 ret = -EAGAIN;
4214 goto out;
4215 }
4216
4217 if (wlvif->bss_type == BSS_TYPE_STA_BSS) {
4218 hlid = wlvif->sta.hlid;
4219 ba_bitmap = &wlvif->sta.ba_rx_bitmap;
4220 } else if (wlvif->bss_type == BSS_TYPE_AP_BSS) {
4221 struct wl1271_station *wl_sta;
4222
4223 wl_sta = (struct wl1271_station *)sta->drv_priv;
4224 hlid = wl_sta->hlid;
4225 ba_bitmap = &wl->links[hlid].ba_bitmap;
4226 } else {
4227 ret = -EINVAL;
4228 goto out;
4229 }
4230
4231 ret = wl1271_ps_elp_wakeup(wl);
4232 if (ret < 0)
4233 goto out;
4234
4235 wl1271_debug(DEBUG_MAC80211, "mac80211 ampdu: Rx tid %d action %d",
4236 tid, action);
4237
4238 switch (action) {
4239 case IEEE80211_AMPDU_RX_START:
4240 if (!wlvif->ba_support || !wlvif->ba_allowed) {
4241 ret = -ENOTSUPP;
4242 break;
4243 }
4244
4245 if (wl->ba_rx_session_count >= RX_BA_MAX_SESSIONS) {
4246 ret = -EBUSY;
4247 wl1271_error("exceeded max RX BA sessions");
4248 break;
4249 }
4250
4251 if (*ba_bitmap & BIT(tid)) {
4252 ret = -EINVAL;
4253 wl1271_error("cannot enable RX BA session on active "
4254 "tid: %d", tid);
4255 break;
4256 }
4257
4258 ret = wl12xx_acx_set_ba_receiver_session(wl, tid, *ssn, true,
4259 hlid);
4260 if (!ret) {
4261 *ba_bitmap |= BIT(tid);
4262 wl->ba_rx_session_count++;
4263 }
4264 break;
4265
4266 case IEEE80211_AMPDU_RX_STOP:
4267 if (!(*ba_bitmap & BIT(tid))) {
4268 ret = -EINVAL;
4269 wl1271_error("no active RX BA session on tid: %d",
4270 tid);
4271 break;
4272 }
4273
4274 ret = wl12xx_acx_set_ba_receiver_session(wl, tid, 0, false,
4275 hlid);
4276 if (!ret) {
4277 *ba_bitmap &= ~BIT(tid);
4278 wl->ba_rx_session_count--;
4279 }
4280 break;
4281
4282 /*
4283 * The BA initiator session management in FW independently.
4284 * Falling break here on purpose for all TX APDU commands.
4285 */
4286 case IEEE80211_AMPDU_TX_START:
4287 case IEEE80211_AMPDU_TX_STOP:
4288 case IEEE80211_AMPDU_TX_OPERATIONAL:
4289 ret = -EINVAL;
4290 break;
4291
4292 default:
4293 wl1271_error("Incorrect ampdu action id=%x\n", action);
4294 ret = -EINVAL;
4295 }
4296
4297 wl1271_ps_elp_sleep(wl);
4298
4299 out:
4300 mutex_unlock(&wl->mutex);
4301
4302 return ret;
4303 }
4304
4305 static int wl12xx_set_bitrate_mask(struct ieee80211_hw *hw,
4306 struct ieee80211_vif *vif,
4307 const struct cfg80211_bitrate_mask *mask)
4308 {
4309 struct wl12xx_vif *wlvif = wl12xx_vif_to_data(vif);
4310 struct wl1271 *wl = hw->priv;
4311 int i, ret = 0;
4312
4313 wl1271_debug(DEBUG_MAC80211, "mac80211 set_bitrate_mask 0x%x 0x%x",
4314 mask->control[NL80211_BAND_2GHZ].legacy,
4315 mask->control[NL80211_BAND_5GHZ].legacy);
4316
4317 mutex_lock(&wl->mutex);
4318
4319 for (i = 0; i < IEEE80211_NUM_BANDS; i++)
4320 wlvif->bitrate_masks[i] =
4321 wl1271_tx_enabled_rates_get(wl,
4322 mask->control[i].legacy,
4323 i);
4324
4325 if (unlikely(wl->state == WL1271_STATE_OFF))
4326 goto out;
4327
4328 if (wlvif->bss_type == BSS_TYPE_STA_BSS &&
4329 !test_bit(WLVIF_FLAG_STA_ASSOCIATED, &wlvif->flags)) {
4330
4331 ret = wl1271_ps_elp_wakeup(wl);
4332 if (ret < 0)
4333 goto out;
4334
4335 wl1271_set_band_rate(wl, wlvif);
4336 wlvif->basic_rate =
4337 wl1271_tx_min_rate_get(wl, wlvif->basic_rate_set);
4338 ret = wl1271_acx_sta_rate_policies(wl, wlvif);
4339
4340 wl1271_ps_elp_sleep(wl);
4341 }
4342 out:
4343 mutex_unlock(&wl->mutex);
4344
4345 return ret;
4346 }
4347
4348 static void wl12xx_op_channel_switch(struct ieee80211_hw *hw,
4349 struct ieee80211_channel_switch *ch_switch)
4350 {
4351 struct wl1271 *wl = hw->priv;
4352 struct wl12xx_vif *wlvif;
4353 int ret;
4354
4355 wl1271_debug(DEBUG_MAC80211, "mac80211 channel switch");
4356
4357 mutex_lock(&wl->mutex);
4358
4359 if (unlikely(wl->state == WL1271_STATE_OFF)) {
4360 wl12xx_for_each_wlvif_sta(wl, wlvif) {
4361 struct ieee80211_vif *vif = wl12xx_wlvif_to_vif(wlvif);
4362 ieee80211_chswitch_done(vif, false);
4363 }
4364 goto out;
4365 }
4366
4367 ret = wl1271_ps_elp_wakeup(wl);
4368 if (ret < 0)
4369 goto out;
4370
4371 /* TODO: change mac80211 to pass vif as param */
4372 wl12xx_for_each_wlvif_sta(wl, wlvif) {
4373 ret = wl12xx_cmd_channel_switch(wl, ch_switch);
4374
4375 if (!ret)
4376 set_bit(WLVIF_FLAG_CS_PROGRESS, &wlvif->flags);
4377 }
4378
4379 wl1271_ps_elp_sleep(wl);
4380
4381 out:
4382 mutex_unlock(&wl->mutex);
4383 }
4384
4385 static bool wl1271_tx_frames_pending(struct ieee80211_hw *hw)
4386 {
4387 struct wl1271 *wl = hw->priv;
4388 bool ret = false;
4389
4390 mutex_lock(&wl->mutex);
4391
4392 if (unlikely(wl->state == WL1271_STATE_OFF))
4393 goto out;
4394
4395 /* packets are considered pending if in the TX queue or the FW */
4396 ret = (wl1271_tx_total_queue_count(wl) > 0) || (wl->tx_frames_cnt > 0);
4397 out:
4398 mutex_unlock(&wl->mutex);
4399
4400 return ret;
4401 }
4402
4403 /* can't be const, mac80211 writes to this */
4404 static struct ieee80211_rate wl1271_rates[] = {
4405 { .bitrate = 10,
4406 .hw_value = CONF_HW_BIT_RATE_1MBPS,
4407 .hw_value_short = CONF_HW_BIT_RATE_1MBPS, },
4408 { .bitrate = 20,
4409 .hw_value = CONF_HW_BIT_RATE_2MBPS,
4410 .hw_value_short = CONF_HW_BIT_RATE_2MBPS,
4411 .flags = IEEE80211_RATE_SHORT_PREAMBLE },
4412 { .bitrate = 55,
4413 .hw_value = CONF_HW_BIT_RATE_5_5MBPS,
4414 .hw_value_short = CONF_HW_BIT_RATE_5_5MBPS,
4415 .flags = IEEE80211_RATE_SHORT_PREAMBLE },
4416 { .bitrate = 110,
4417 .hw_value = CONF_HW_BIT_RATE_11MBPS,
4418 .hw_value_short = CONF_HW_BIT_RATE_11MBPS,
4419 .flags = IEEE80211_RATE_SHORT_PREAMBLE },
4420 { .bitrate = 60,
4421 .hw_value = CONF_HW_BIT_RATE_6MBPS,
4422 .hw_value_short = CONF_HW_BIT_RATE_6MBPS, },
4423 { .bitrate = 90,
4424 .hw_value = CONF_HW_BIT_RATE_9MBPS,
4425 .hw_value_short = CONF_HW_BIT_RATE_9MBPS, },
4426 { .bitrate = 120,
4427 .hw_value = CONF_HW_BIT_RATE_12MBPS,
4428 .hw_value_short = CONF_HW_BIT_RATE_12MBPS, },
4429 { .bitrate = 180,
4430 .hw_value = CONF_HW_BIT_RATE_18MBPS,
4431 .hw_value_short = CONF_HW_BIT_RATE_18MBPS, },
4432 { .bitrate = 240,
4433 .hw_value = CONF_HW_BIT_RATE_24MBPS,
4434 .hw_value_short = CONF_HW_BIT_RATE_24MBPS, },
4435 { .bitrate = 360,
4436 .hw_value = CONF_HW_BIT_RATE_36MBPS,
4437 .hw_value_short = CONF_HW_BIT_RATE_36MBPS, },
4438 { .bitrate = 480,
4439 .hw_value = CONF_HW_BIT_RATE_48MBPS,
4440 .hw_value_short = CONF_HW_BIT_RATE_48MBPS, },
4441 { .bitrate = 540,
4442 .hw_value = CONF_HW_BIT_RATE_54MBPS,
4443 .hw_value_short = CONF_HW_BIT_RATE_54MBPS, },
4444 };
4445
4446 /* can't be const, mac80211 writes to this */
4447 static struct ieee80211_channel wl1271_channels[] = {
4448 { .hw_value = 1, .center_freq = 2412, .max_power = 25 },
4449 { .hw_value = 2, .center_freq = 2417, .max_power = 25 },
4450 { .hw_value = 3, .center_freq = 2422, .max_power = 25 },
4451 { .hw_value = 4, .center_freq = 2427, .max_power = 25 },
4452 { .hw_value = 5, .center_freq = 2432, .max_power = 25 },
4453 { .hw_value = 6, .center_freq = 2437, .max_power = 25 },
4454 { .hw_value = 7, .center_freq = 2442, .max_power = 25 },
4455 { .hw_value = 8, .center_freq = 2447, .max_power = 25 },
4456 { .hw_value = 9, .center_freq = 2452, .max_power = 25 },
4457 { .hw_value = 10, .center_freq = 2457, .max_power = 25 },
4458 { .hw_value = 11, .center_freq = 2462, .max_power = 25 },
4459 { .hw_value = 12, .center_freq = 2467, .max_power = 25 },
4460 { .hw_value = 13, .center_freq = 2472, .max_power = 25 },
4461 { .hw_value = 14, .center_freq = 2484, .max_power = 25 },
4462 };
4463
4464 /* mapping to indexes for wl1271_rates */
4465 static const u8 wl1271_rate_to_idx_2ghz[] = {
4466 /* MCS rates are used only with 11n */
4467 7, /* CONF_HW_RXTX_RATE_MCS7 */
4468 6, /* CONF_HW_RXTX_RATE_MCS6 */
4469 5, /* CONF_HW_RXTX_RATE_MCS5 */
4470 4, /* CONF_HW_RXTX_RATE_MCS4 */
4471 3, /* CONF_HW_RXTX_RATE_MCS3 */
4472 2, /* CONF_HW_RXTX_RATE_MCS2 */
4473 1, /* CONF_HW_RXTX_RATE_MCS1 */
4474 0, /* CONF_HW_RXTX_RATE_MCS0 */
4475
4476 11, /* CONF_HW_RXTX_RATE_54 */
4477 10, /* CONF_HW_RXTX_RATE_48 */
4478 9, /* CONF_HW_RXTX_RATE_36 */
4479 8, /* CONF_HW_RXTX_RATE_24 */
4480
4481 /* TI-specific rate */
4482 CONF_HW_RXTX_RATE_UNSUPPORTED, /* CONF_HW_RXTX_RATE_22 */
4483
4484 7, /* CONF_HW_RXTX_RATE_18 */
4485 6, /* CONF_HW_RXTX_RATE_12 */
4486 3, /* CONF_HW_RXTX_RATE_11 */
4487 5, /* CONF_HW_RXTX_RATE_9 */
4488 4, /* CONF_HW_RXTX_RATE_6 */
4489 2, /* CONF_HW_RXTX_RATE_5_5 */
4490 1, /* CONF_HW_RXTX_RATE_2 */
4491 0 /* CONF_HW_RXTX_RATE_1 */
4492 };
4493
4494 /* 11n STA capabilities */
4495 #define HW_RX_HIGHEST_RATE 72
4496
4497 #define WL12XX_HT_CAP { \
4498 .cap = IEEE80211_HT_CAP_GRN_FLD | IEEE80211_HT_CAP_SGI_20 | \
4499 (1 << IEEE80211_HT_CAP_RX_STBC_SHIFT), \
4500 .ht_supported = true, \
4501 .ampdu_factor = IEEE80211_HT_MAX_AMPDU_8K, \
4502 .ampdu_density = IEEE80211_HT_MPDU_DENSITY_8, \
4503 .mcs = { \
4504 .rx_mask = { 0xff, 0, 0, 0, 0, 0, 0, 0, 0, 0, }, \
4505 .rx_highest = cpu_to_le16(HW_RX_HIGHEST_RATE), \
4506 .tx_params = IEEE80211_HT_MCS_TX_DEFINED, \
4507 }, \
4508 }
4509
4510 /* can't be const, mac80211 writes to this */
4511 static struct ieee80211_supported_band wl1271_band_2ghz = {
4512 .channels = wl1271_channels,
4513 .n_channels = ARRAY_SIZE(wl1271_channels),
4514 .bitrates = wl1271_rates,
4515 .n_bitrates = ARRAY_SIZE(wl1271_rates),
4516 .ht_cap = WL12XX_HT_CAP,
4517 };
4518
4519 /* 5 GHz data rates for WL1273 */
4520 static struct ieee80211_rate wl1271_rates_5ghz[] = {
4521 { .bitrate = 60,
4522 .hw_value = CONF_HW_BIT_RATE_6MBPS,
4523 .hw_value_short = CONF_HW_BIT_RATE_6MBPS, },
4524 { .bitrate = 90,
4525 .hw_value = CONF_HW_BIT_RATE_9MBPS,
4526 .hw_value_short = CONF_HW_BIT_RATE_9MBPS, },
4527 { .bitrate = 120,
4528 .hw_value = CONF_HW_BIT_RATE_12MBPS,
4529 .hw_value_short = CONF_HW_BIT_RATE_12MBPS, },
4530 { .bitrate = 180,
4531 .hw_value = CONF_HW_BIT_RATE_18MBPS,
4532 .hw_value_short = CONF_HW_BIT_RATE_18MBPS, },
4533 { .bitrate = 240,
4534 .hw_value = CONF_HW_BIT_RATE_24MBPS,
4535 .hw_value_short = CONF_HW_BIT_RATE_24MBPS, },
4536 { .bitrate = 360,
4537 .hw_value = CONF_HW_BIT_RATE_36MBPS,
4538 .hw_value_short = CONF_HW_BIT_RATE_36MBPS, },
4539 { .bitrate = 480,
4540 .hw_value = CONF_HW_BIT_RATE_48MBPS,
4541 .hw_value_short = CONF_HW_BIT_RATE_48MBPS, },
4542 { .bitrate = 540,
4543 .hw_value = CONF_HW_BIT_RATE_54MBPS,
4544 .hw_value_short = CONF_HW_BIT_RATE_54MBPS, },
4545 };
4546
4547 /* 5 GHz band channels for WL1273 */
4548 static struct ieee80211_channel wl1271_channels_5ghz[] = {
4549 { .hw_value = 7, .center_freq = 5035, .max_power = 25 },
4550 { .hw_value = 8, .center_freq = 5040, .max_power = 25 },
4551 { .hw_value = 9, .center_freq = 5045, .max_power = 25 },
4552 { .hw_value = 11, .center_freq = 5055, .max_power = 25 },
4553 { .hw_value = 12, .center_freq = 5060, .max_power = 25 },
4554 { .hw_value = 16, .center_freq = 5080, .max_power = 25 },
4555 { .hw_value = 34, .center_freq = 5170, .max_power = 25 },
4556 { .hw_value = 36, .center_freq = 5180, .max_power = 25 },
4557 { .hw_value = 38, .center_freq = 5190, .max_power = 25 },
4558 { .hw_value = 40, .center_freq = 5200, .max_power = 25 },
4559 { .hw_value = 42, .center_freq = 5210, .max_power = 25 },
4560 { .hw_value = 44, .center_freq = 5220, .max_power = 25 },
4561 { .hw_value = 46, .center_freq = 5230, .max_power = 25 },
4562 { .hw_value = 48, .center_freq = 5240, .max_power = 25 },
4563 { .hw_value = 52, .center_freq = 5260, .max_power = 25 },
4564 { .hw_value = 56, .center_freq = 5280, .max_power = 25 },
4565 { .hw_value = 60, .center_freq = 5300, .max_power = 25 },
4566 { .hw_value = 64, .center_freq = 5320, .max_power = 25 },
4567 { .hw_value = 100, .center_freq = 5500, .max_power = 25 },
4568 { .hw_value = 104, .center_freq = 5520, .max_power = 25 },
4569 { .hw_value = 108, .center_freq = 5540, .max_power = 25 },
4570 { .hw_value = 112, .center_freq = 5560, .max_power = 25 },
4571 { .hw_value = 116, .center_freq = 5580, .max_power = 25 },
4572 { .hw_value = 120, .center_freq = 5600, .max_power = 25 },
4573 { .hw_value = 124, .center_freq = 5620, .max_power = 25 },
4574 { .hw_value = 128, .center_freq = 5640, .max_power = 25 },
4575 { .hw_value = 132, .center_freq = 5660, .max_power = 25 },
4576 { .hw_value = 136, .center_freq = 5680, .max_power = 25 },
4577 { .hw_value = 140, .center_freq = 5700, .max_power = 25 },
4578 { .hw_value = 149, .center_freq = 5745, .max_power = 25 },
4579 { .hw_value = 153, .center_freq = 5765, .max_power = 25 },
4580 { .hw_value = 157, .center_freq = 5785, .max_power = 25 },
4581 { .hw_value = 161, .center_freq = 5805, .max_power = 25 },
4582 { .hw_value = 165, .center_freq = 5825, .max_power = 25 },
4583 };
4584
4585 /* mapping to indexes for wl1271_rates_5ghz */
4586 static const u8 wl1271_rate_to_idx_5ghz[] = {
4587 /* MCS rates are used only with 11n */
4588 7, /* CONF_HW_RXTX_RATE_MCS7 */
4589 6, /* CONF_HW_RXTX_RATE_MCS6 */
4590 5, /* CONF_HW_RXTX_RATE_MCS5 */
4591 4, /* CONF_HW_RXTX_RATE_MCS4 */
4592 3, /* CONF_HW_RXTX_RATE_MCS3 */
4593 2, /* CONF_HW_RXTX_RATE_MCS2 */
4594 1, /* CONF_HW_RXTX_RATE_MCS1 */
4595 0, /* CONF_HW_RXTX_RATE_MCS0 */
4596
4597 7, /* CONF_HW_RXTX_RATE_54 */
4598 6, /* CONF_HW_RXTX_RATE_48 */
4599 5, /* CONF_HW_RXTX_RATE_36 */
4600 4, /* CONF_HW_RXTX_RATE_24 */
4601
4602 /* TI-specific rate */
4603 CONF_HW_RXTX_RATE_UNSUPPORTED, /* CONF_HW_RXTX_RATE_22 */
4604
4605 3, /* CONF_HW_RXTX_RATE_18 */
4606 2, /* CONF_HW_RXTX_RATE_12 */
4607 CONF_HW_RXTX_RATE_UNSUPPORTED, /* CONF_HW_RXTX_RATE_11 */
4608 1, /* CONF_HW_RXTX_RATE_9 */
4609 0, /* CONF_HW_RXTX_RATE_6 */
4610 CONF_HW_RXTX_RATE_UNSUPPORTED, /* CONF_HW_RXTX_RATE_5_5 */
4611 CONF_HW_RXTX_RATE_UNSUPPORTED, /* CONF_HW_RXTX_RATE_2 */
4612 CONF_HW_RXTX_RATE_UNSUPPORTED /* CONF_HW_RXTX_RATE_1 */
4613 };
4614
4615 static struct ieee80211_supported_band wl1271_band_5ghz = {
4616 .channels = wl1271_channels_5ghz,
4617 .n_channels = ARRAY_SIZE(wl1271_channels_5ghz),
4618 .bitrates = wl1271_rates_5ghz,
4619 .n_bitrates = ARRAY_SIZE(wl1271_rates_5ghz),
4620 .ht_cap = WL12XX_HT_CAP,
4621 };
4622
4623 static const u8 *wl1271_band_rate_to_idx[] = {
4624 [IEEE80211_BAND_2GHZ] = wl1271_rate_to_idx_2ghz,
4625 [IEEE80211_BAND_5GHZ] = wl1271_rate_to_idx_5ghz
4626 };
4627
4628 static const struct ieee80211_ops wl1271_ops = {
4629 .start = wl1271_op_start,
4630 .stop = wl1271_op_stop,
4631 .add_interface = wl1271_op_add_interface,
4632 .remove_interface = wl1271_op_remove_interface,
4633 .change_interface = wl12xx_op_change_interface,
4634 #ifdef CONFIG_PM
4635 .suspend = wl1271_op_suspend,
4636 .resume = wl1271_op_resume,
4637 #endif
4638 .config = wl1271_op_config,
4639 .prepare_multicast = wl1271_op_prepare_multicast,
4640 .configure_filter = wl1271_op_configure_filter,
4641 .tx = wl1271_op_tx,
4642 .set_key = wl1271_op_set_key,
4643 .hw_scan = wl1271_op_hw_scan,
4644 .cancel_hw_scan = wl1271_op_cancel_hw_scan,
4645 .sched_scan_start = wl1271_op_sched_scan_start,
4646 .sched_scan_stop = wl1271_op_sched_scan_stop,
4647 .bss_info_changed = wl1271_op_bss_info_changed,
4648 .set_frag_threshold = wl1271_op_set_frag_threshold,
4649 .set_rts_threshold = wl1271_op_set_rts_threshold,
4650 .conf_tx = wl1271_op_conf_tx,
4651 .get_tsf = wl1271_op_get_tsf,
4652 .get_survey = wl1271_op_get_survey,
4653 .sta_add = wl1271_op_sta_add,
4654 .sta_remove = wl1271_op_sta_remove,
4655 .ampdu_action = wl1271_op_ampdu_action,
4656 .tx_frames_pending = wl1271_tx_frames_pending,
4657 .set_bitrate_mask = wl12xx_set_bitrate_mask,
4658 .channel_switch = wl12xx_op_channel_switch,
4659 CFG80211_TESTMODE_CMD(wl1271_tm_cmd)
4660 };
4661
4662
4663 u8 wl1271_rate_to_idx(int rate, enum ieee80211_band band)
4664 {
4665 u8 idx;
4666
4667 BUG_ON(band >= sizeof(wl1271_band_rate_to_idx)/sizeof(u8 *));
4668
4669 if (unlikely(rate >= CONF_HW_RXTX_RATE_MAX)) {
4670 wl1271_error("Illegal RX rate from HW: %d", rate);
4671 return 0;
4672 }
4673
4674 idx = wl1271_band_rate_to_idx[band][rate];
4675 if (unlikely(idx == CONF_HW_RXTX_RATE_UNSUPPORTED)) {
4676 wl1271_error("Unsupported RX rate from HW: %d", rate);
4677 return 0;
4678 }
4679
4680 return idx;
4681 }
4682
4683 static ssize_t wl1271_sysfs_show_bt_coex_state(struct device *dev,
4684 struct device_attribute *attr,
4685 char *buf)
4686 {
4687 struct wl1271 *wl = dev_get_drvdata(dev);
4688 ssize_t len;
4689
4690 len = PAGE_SIZE;
4691
4692 mutex_lock(&wl->mutex);
4693 len = snprintf(buf, len, "%d\n\n0 - off\n1 - on\n",
4694 wl->sg_enabled);
4695 mutex_unlock(&wl->mutex);
4696
4697 return len;
4698
4699 }
4700
4701 static ssize_t wl1271_sysfs_store_bt_coex_state(struct device *dev,
4702 struct device_attribute *attr,
4703 const char *buf, size_t count)
4704 {
4705 struct wl1271 *wl = dev_get_drvdata(dev);
4706 unsigned long res;
4707 int ret;
4708
4709 ret = kstrtoul(buf, 10, &res);
4710 if (ret < 0) {
4711 wl1271_warning("incorrect value written to bt_coex_mode");
4712 return count;
4713 }
4714
4715 mutex_lock(&wl->mutex);
4716
4717 res = !!res;
4718
4719 if (res == wl->sg_enabled)
4720 goto out;
4721
4722 wl->sg_enabled = res;
4723
4724 if (wl->state == WL1271_STATE_OFF)
4725 goto out;
4726
4727 ret = wl1271_ps_elp_wakeup(wl);
4728 if (ret < 0)
4729 goto out;
4730
4731 wl1271_acx_sg_enable(wl, wl->sg_enabled);
4732 wl1271_ps_elp_sleep(wl);
4733
4734 out:
4735 mutex_unlock(&wl->mutex);
4736 return count;
4737 }
4738
4739 static DEVICE_ATTR(bt_coex_state, S_IRUGO | S_IWUSR,
4740 wl1271_sysfs_show_bt_coex_state,
4741 wl1271_sysfs_store_bt_coex_state);
4742
4743 static ssize_t wl1271_sysfs_show_hw_pg_ver(struct device *dev,
4744 struct device_attribute *attr,
4745 char *buf)
4746 {
4747 struct wl1271 *wl = dev_get_drvdata(dev);
4748 ssize_t len;
4749
4750 len = PAGE_SIZE;
4751
4752 mutex_lock(&wl->mutex);
4753 if (wl->hw_pg_ver >= 0)
4754 len = snprintf(buf, len, "%d\n", wl->hw_pg_ver);
4755 else
4756 len = snprintf(buf, len, "n/a\n");
4757 mutex_unlock(&wl->mutex);
4758
4759 return len;
4760 }
4761
4762 static DEVICE_ATTR(hw_pg_ver, S_IRUGO,
4763 wl1271_sysfs_show_hw_pg_ver, NULL);
4764
4765 static ssize_t wl1271_sysfs_read_fwlog(struct file *filp, struct kobject *kobj,
4766 struct bin_attribute *bin_attr,
4767 char *buffer, loff_t pos, size_t count)
4768 {
4769 struct device *dev = container_of(kobj, struct device, kobj);
4770 struct wl1271 *wl = dev_get_drvdata(dev);
4771 ssize_t len;
4772 int ret;
4773
4774 ret = mutex_lock_interruptible(&wl->mutex);
4775 if (ret < 0)
4776 return -ERESTARTSYS;
4777
4778 /* Let only one thread read the log at a time, blocking others */
4779 while (wl->fwlog_size == 0) {
4780 DEFINE_WAIT(wait);
4781
4782 prepare_to_wait_exclusive(&wl->fwlog_waitq,
4783 &wait,
4784 TASK_INTERRUPTIBLE);
4785
4786 if (wl->fwlog_size != 0) {
4787 finish_wait(&wl->fwlog_waitq, &wait);
4788 break;
4789 }
4790
4791 mutex_unlock(&wl->mutex);
4792
4793 schedule();
4794 finish_wait(&wl->fwlog_waitq, &wait);
4795
4796 if (signal_pending(current))
4797 return -ERESTARTSYS;
4798
4799 ret = mutex_lock_interruptible(&wl->mutex);
4800 if (ret < 0)
4801 return -ERESTARTSYS;
4802 }
4803
4804 /* Check if the fwlog is still valid */
4805 if (wl->fwlog_size < 0) {
4806 mutex_unlock(&wl->mutex);
4807 return 0;
4808 }
4809
4810 /* Seeking is not supported - old logs are not kept. Disregard pos. */
4811 len = min(count, (size_t)wl->fwlog_size);
4812 wl->fwlog_size -= len;
4813 memcpy(buffer, wl->fwlog, len);
4814
4815 /* Make room for new messages */
4816 memmove(wl->fwlog, wl->fwlog + len, wl->fwlog_size);
4817
4818 mutex_unlock(&wl->mutex);
4819
4820 return len;
4821 }
4822
4823 static struct bin_attribute fwlog_attr = {
4824 .attr = {.name = "fwlog", .mode = S_IRUSR},
4825 .read = wl1271_sysfs_read_fwlog,
4826 };
4827
4828 static int wl1271_register_hw(struct wl1271 *wl)
4829 {
4830 int ret;
4831
4832 if (wl->mac80211_registered)
4833 return 0;
4834
4835 ret = wl1271_fetch_nvs(wl);
4836 if (ret == 0) {
4837 /* NOTE: The wl->nvs->nvs element must be first, in
4838 * order to simplify the casting, we assume it is at
4839 * the beginning of the wl->nvs structure.
4840 */
4841 u8 *nvs_ptr = (u8 *)wl->nvs;
4842
4843 wl->mac_addr[0] = nvs_ptr[11];
4844 wl->mac_addr[1] = nvs_ptr[10];
4845 wl->mac_addr[2] = nvs_ptr[6];
4846 wl->mac_addr[3] = nvs_ptr[5];
4847 wl->mac_addr[4] = nvs_ptr[4];
4848 wl->mac_addr[5] = nvs_ptr[3];
4849 }
4850
4851 SET_IEEE80211_PERM_ADDR(wl->hw, wl->mac_addr);
4852
4853 ret = ieee80211_register_hw(wl->hw);
4854 if (ret < 0) {
4855 wl1271_error("unable to register mac80211 hw: %d", ret);
4856 return ret;
4857 }
4858
4859 wl->mac80211_registered = true;
4860
4861 wl1271_debugfs_init(wl);
4862
4863 register_netdevice_notifier(&wl1271_dev_notifier);
4864
4865 wl1271_notice("loaded");
4866
4867 return 0;
4868 }
4869
4870 static void wl1271_unregister_hw(struct wl1271 *wl)
4871 {
4872 if (wl->state == WL1271_STATE_PLT)
4873 __wl1271_plt_stop(wl);
4874
4875 unregister_netdevice_notifier(&wl1271_dev_notifier);
4876 ieee80211_unregister_hw(wl->hw);
4877 wl->mac80211_registered = false;
4878
4879 }
4880
4881 static int wl1271_init_ieee80211(struct wl1271 *wl)
4882 {
4883 static const u32 cipher_suites[] = {
4884 WLAN_CIPHER_SUITE_WEP40,
4885 WLAN_CIPHER_SUITE_WEP104,
4886 WLAN_CIPHER_SUITE_TKIP,
4887 WLAN_CIPHER_SUITE_CCMP,
4888 WL1271_CIPHER_SUITE_GEM,
4889 };
4890
4891 /* The tx descriptor buffer and the TKIP space. */
4892 wl->hw->extra_tx_headroom = WL1271_TKIP_IV_SPACE +
4893 sizeof(struct wl1271_tx_hw_descr);
4894
4895 /* unit us */
4896 /* FIXME: find a proper value */
4897 wl->hw->channel_change_time = 10000;
4898 wl->hw->max_listen_interval = wl->conf.conn.max_listen_interval;
4899
4900 wl->hw->flags = IEEE80211_HW_SIGNAL_DBM |
4901 IEEE80211_HW_BEACON_FILTER |
4902 IEEE80211_HW_SUPPORTS_PS |
4903 IEEE80211_HW_SUPPORTS_UAPSD |
4904 IEEE80211_HW_HAS_RATE_CONTROL |
4905 IEEE80211_HW_CONNECTION_MONITOR |
4906 IEEE80211_HW_SUPPORTS_CQM_RSSI |
4907 IEEE80211_HW_REPORTS_TX_ACK_STATUS |
4908 IEEE80211_HW_SPECTRUM_MGMT |
4909 IEEE80211_HW_AP_LINK_PS |
4910 IEEE80211_HW_AMPDU_AGGREGATION |
4911 IEEE80211_HW_TX_AMPDU_SETUP_IN_HW;
4912
4913 wl->hw->wiphy->cipher_suites = cipher_suites;
4914 wl->hw->wiphy->n_cipher_suites = ARRAY_SIZE(cipher_suites);
4915
4916 wl->hw->wiphy->interface_modes = BIT(NL80211_IFTYPE_STATION) |
4917 BIT(NL80211_IFTYPE_ADHOC) | BIT(NL80211_IFTYPE_AP) |
4918 BIT(NL80211_IFTYPE_P2P_CLIENT) | BIT(NL80211_IFTYPE_P2P_GO);
4919 wl->hw->wiphy->max_scan_ssids = 1;
4920 wl->hw->wiphy->max_sched_scan_ssids = 16;
4921 wl->hw->wiphy->max_match_sets = 16;
4922 /*
4923 * Maximum length of elements in scanning probe request templates
4924 * should be the maximum length possible for a template, without
4925 * the IEEE80211 header of the template
4926 */
4927 wl->hw->wiphy->max_scan_ie_len = WL1271_CMD_TEMPL_DFLT_SIZE -
4928 sizeof(struct ieee80211_header);
4929
4930 wl->hw->wiphy->max_sched_scan_ie_len = WL1271_CMD_TEMPL_DFLT_SIZE -
4931 sizeof(struct ieee80211_header);
4932
4933 wl->hw->wiphy->flags |= WIPHY_FLAG_AP_UAPSD;
4934
4935 /* make sure all our channels fit in the scanned_ch bitmask */
4936 BUILD_BUG_ON(ARRAY_SIZE(wl1271_channels) +
4937 ARRAY_SIZE(wl1271_channels_5ghz) >
4938 WL1271_MAX_CHANNELS);
4939 /*
4940 * We keep local copies of the band structs because we need to
4941 * modify them on a per-device basis.
4942 */
4943 memcpy(&wl->bands[IEEE80211_BAND_2GHZ], &wl1271_band_2ghz,
4944 sizeof(wl1271_band_2ghz));
4945 memcpy(&wl->bands[IEEE80211_BAND_5GHZ], &wl1271_band_5ghz,
4946 sizeof(wl1271_band_5ghz));
4947
4948 wl->hw->wiphy->bands[IEEE80211_BAND_2GHZ] =
4949 &wl->bands[IEEE80211_BAND_2GHZ];
4950 wl->hw->wiphy->bands[IEEE80211_BAND_5GHZ] =
4951 &wl->bands[IEEE80211_BAND_5GHZ];
4952
4953 wl->hw->queues = 4;
4954 wl->hw->max_rates = 1;
4955
4956 wl->hw->wiphy->reg_notifier = wl1271_reg_notify;
4957
4958 /* the FW answers probe-requests in AP-mode */
4959 wl->hw->wiphy->flags |= WIPHY_FLAG_AP_PROBE_RESP_OFFLOAD;
4960 wl->hw->wiphy->probe_resp_offload =
4961 NL80211_PROBE_RESP_OFFLOAD_SUPPORT_WPS |
4962 NL80211_PROBE_RESP_OFFLOAD_SUPPORT_WPS2 |
4963 NL80211_PROBE_RESP_OFFLOAD_SUPPORT_P2P;
4964
4965 SET_IEEE80211_DEV(wl->hw, wl->dev);
4966
4967 wl->hw->sta_data_size = sizeof(struct wl1271_station);
4968 wl->hw->vif_data_size = sizeof(struct wl12xx_vif);
4969
4970 wl->hw->max_rx_aggregation_subframes = 8;
4971
4972 return 0;
4973 }
4974
4975 #define WL1271_DEFAULT_CHANNEL 0
4976
4977 static struct ieee80211_hw *wl1271_alloc_hw(void)
4978 {
4979 struct ieee80211_hw *hw;
4980 struct wl1271 *wl;
4981 int i, j, ret;
4982 unsigned int order;
4983
4984 BUILD_BUG_ON(AP_MAX_STATIONS > WL12XX_MAX_LINKS);
4985
4986 hw = ieee80211_alloc_hw(sizeof(*wl), &wl1271_ops);
4987 if (!hw) {
4988 wl1271_error("could not alloc ieee80211_hw");
4989 ret = -ENOMEM;
4990 goto err_hw_alloc;
4991 }
4992
4993 wl = hw->priv;
4994 memset(wl, 0, sizeof(*wl));
4995
4996 INIT_LIST_HEAD(&wl->list);
4997 INIT_LIST_HEAD(&wl->wlvif_list);
4998
4999 wl->hw = hw;
5000
5001 for (i = 0; i < NUM_TX_QUEUES; i++)
5002 for (j = 0; j < WL12XX_MAX_LINKS; j++)
5003 skb_queue_head_init(&wl->links[j].tx_queue[i]);
5004
5005 skb_queue_head_init(&wl->deferred_rx_queue);
5006 skb_queue_head_init(&wl->deferred_tx_queue);
5007
5008 INIT_DELAYED_WORK(&wl->elp_work, wl1271_elp_work);
5009 INIT_WORK(&wl->netstack_work, wl1271_netstack_work);
5010 INIT_WORK(&wl->tx_work, wl1271_tx_work);
5011 INIT_WORK(&wl->recovery_work, wl1271_recovery_work);
5012 INIT_DELAYED_WORK(&wl->scan_complete_work, wl1271_scan_complete_work);
5013
5014 wl->freezable_wq = create_freezable_workqueue("wl12xx_wq");
5015 if (!wl->freezable_wq) {
5016 ret = -ENOMEM;
5017 goto err_hw;
5018 }
5019
5020 wl->channel = WL1271_DEFAULT_CHANNEL;
5021 wl->rx_counter = 0;
5022 wl->power_level = WL1271_DEFAULT_POWER_LEVEL;
5023 wl->band = IEEE80211_BAND_2GHZ;
5024 wl->vif = NULL;
5025 wl->flags = 0;
5026 wl->sg_enabled = true;
5027 wl->hw_pg_ver = -1;
5028 wl->ap_ps_map = 0;
5029 wl->ap_fw_ps_map = 0;
5030 wl->quirks = 0;
5031 wl->platform_quirks = 0;
5032 wl->sched_scanning = false;
5033 wl->tx_spare_blocks = TX_HW_BLOCK_SPARE_DEFAULT;
5034 wl->system_hlid = WL12XX_SYSTEM_HLID;
5035 wl->active_sta_count = 0;
5036 wl->fwlog_size = 0;
5037 init_waitqueue_head(&wl->fwlog_waitq);
5038
5039 /* The system link is always allocated */
5040 __set_bit(WL12XX_SYSTEM_HLID, wl->links_map);
5041
5042 memset(wl->tx_frames_map, 0, sizeof(wl->tx_frames_map));
5043 for (i = 0; i < ACX_TX_DESCRIPTORS; i++)
5044 wl->tx_frames[i] = NULL;
5045
5046 spin_lock_init(&wl->wl_lock);
5047
5048 wl->state = WL1271_STATE_OFF;
5049 mutex_init(&wl->mutex);
5050
5051 /* Apply default driver configuration. */
5052 wl1271_conf_init(wl);
5053
5054 order = get_order(WL1271_AGGR_BUFFER_SIZE);
5055 wl->aggr_buf = (u8 *)__get_free_pages(GFP_KERNEL, order);
5056 if (!wl->aggr_buf) {
5057 ret = -ENOMEM;
5058 goto err_wq;
5059 }
5060
5061 wl->dummy_packet = wl12xx_alloc_dummy_packet(wl);
5062 if (!wl->dummy_packet) {
5063 ret = -ENOMEM;
5064 goto err_aggr;
5065 }
5066
5067 /* Allocate one page for the FW log */
5068 wl->fwlog = (u8 *)get_zeroed_page(GFP_KERNEL);
5069 if (!wl->fwlog) {
5070 ret = -ENOMEM;
5071 goto err_dummy_packet;
5072 }
5073
5074 return hw;
5075
5076 err_dummy_packet:
5077 dev_kfree_skb(wl->dummy_packet);
5078
5079 err_aggr:
5080 free_pages((unsigned long)wl->aggr_buf, order);
5081
5082 err_wq:
5083 destroy_workqueue(wl->freezable_wq);
5084
5085 err_hw:
5086 wl1271_debugfs_exit(wl);
5087 ieee80211_free_hw(hw);
5088
5089 err_hw_alloc:
5090
5091 return ERR_PTR(ret);
5092 }
5093
5094 static int wl1271_free_hw(struct wl1271 *wl)
5095 {
5096 /* Unblock any fwlog readers */
5097 mutex_lock(&wl->mutex);
5098 wl->fwlog_size = -1;
5099 wake_up_interruptible_all(&wl->fwlog_waitq);
5100 mutex_unlock(&wl->mutex);
5101
5102 device_remove_bin_file(wl->dev, &fwlog_attr);
5103
5104 device_remove_file(wl->dev, &dev_attr_hw_pg_ver);
5105
5106 device_remove_file(wl->dev, &dev_attr_bt_coex_state);
5107 free_page((unsigned long)wl->fwlog);
5108 dev_kfree_skb(wl->dummy_packet);
5109 free_pages((unsigned long)wl->aggr_buf,
5110 get_order(WL1271_AGGR_BUFFER_SIZE));
5111
5112 wl1271_debugfs_exit(wl);
5113
5114 vfree(wl->fw);
5115 wl->fw = NULL;
5116 kfree(wl->nvs);
5117 wl->nvs = NULL;
5118
5119 kfree(wl->fw_status);
5120 kfree(wl->tx_res_if);
5121 destroy_workqueue(wl->freezable_wq);
5122
5123 ieee80211_free_hw(wl->hw);
5124
5125 return 0;
5126 }
5127
5128 static irqreturn_t wl12xx_hardirq(int irq, void *cookie)
5129 {
5130 struct wl1271 *wl = cookie;
5131 unsigned long flags;
5132
5133 wl1271_debug(DEBUG_IRQ, "IRQ");
5134
5135 /* complete the ELP completion */
5136 spin_lock_irqsave(&wl->wl_lock, flags);
5137 set_bit(WL1271_FLAG_IRQ_RUNNING, &wl->flags);
5138 if (wl->elp_compl) {
5139 complete(wl->elp_compl);
5140 wl->elp_compl = NULL;
5141 }
5142
5143 if (test_bit(WL1271_FLAG_SUSPENDED, &wl->flags)) {
5144 /* don't enqueue a work right now. mark it as pending */
5145 set_bit(WL1271_FLAG_PENDING_WORK, &wl->flags);
5146 wl1271_debug(DEBUG_IRQ, "should not enqueue work");
5147 disable_irq_nosync(wl->irq);
5148 pm_wakeup_event(wl->dev, 0);
5149 spin_unlock_irqrestore(&wl->wl_lock, flags);
5150 return IRQ_HANDLED;
5151 }
5152 spin_unlock_irqrestore(&wl->wl_lock, flags);
5153
5154 return IRQ_WAKE_THREAD;
5155 }
5156
5157 static int __devinit wl12xx_probe(struct platform_device *pdev)
5158 {
5159 struct wl12xx_platform_data *pdata = pdev->dev.platform_data;
5160 struct ieee80211_hw *hw;
5161 struct wl1271 *wl;
5162 unsigned long irqflags;
5163 int ret = -ENODEV;
5164
5165 hw = wl1271_alloc_hw();
5166 if (IS_ERR(hw)) {
5167 wl1271_error("can't allocate hw");
5168 ret = PTR_ERR(hw);
5169 goto out;
5170 }
5171
5172 wl = hw->priv;
5173 wl->irq = platform_get_irq(pdev, 0);
5174 wl->ref_clock = pdata->board_ref_clock;
5175 wl->tcxo_clock = pdata->board_tcxo_clock;
5176 wl->platform_quirks = pdata->platform_quirks;
5177 wl->set_power = pdata->set_power;
5178 wl->dev = &pdev->dev;
5179 wl->if_ops = pdata->ops;
5180
5181 platform_set_drvdata(pdev, wl);
5182
5183 if (wl->platform_quirks & WL12XX_PLATFORM_QUIRK_EDGE_IRQ)
5184 irqflags = IRQF_TRIGGER_RISING;
5185 else
5186 irqflags = IRQF_TRIGGER_HIGH | IRQF_ONESHOT;
5187
5188 ret = request_threaded_irq(wl->irq, wl12xx_hardirq, wl1271_irq,
5189 irqflags,
5190 pdev->name, wl);
5191 if (ret < 0) {
5192 wl1271_error("request_irq() failed: %d", ret);
5193 goto out_free_hw;
5194 }
5195
5196 ret = enable_irq_wake(wl->irq);
5197 if (!ret) {
5198 wl->irq_wake_enabled = true;
5199 device_init_wakeup(wl->dev, 1);
5200 if (pdata->pwr_in_suspend)
5201 hw->wiphy->wowlan.flags = WIPHY_WOWLAN_ANY;
5202
5203 }
5204 disable_irq(wl->irq);
5205
5206 ret = wl1271_init_ieee80211(wl);
5207 if (ret)
5208 goto out_irq;
5209
5210 ret = wl1271_register_hw(wl);
5211 if (ret)
5212 goto out_irq;
5213
5214 /* Create sysfs file to control bt coex state */
5215 ret = device_create_file(wl->dev, &dev_attr_bt_coex_state);
5216 if (ret < 0) {
5217 wl1271_error("failed to create sysfs file bt_coex_state");
5218 goto out_irq;
5219 }
5220
5221 /* Create sysfs file to get HW PG version */
5222 ret = device_create_file(wl->dev, &dev_attr_hw_pg_ver);
5223 if (ret < 0) {
5224 wl1271_error("failed to create sysfs file hw_pg_ver");
5225 goto out_bt_coex_state;
5226 }
5227
5228 /* Create sysfs file for the FW log */
5229 ret = device_create_bin_file(wl->dev, &fwlog_attr);
5230 if (ret < 0) {
5231 wl1271_error("failed to create sysfs file fwlog");
5232 goto out_hw_pg_ver;
5233 }
5234
5235 return 0;
5236
5237 out_hw_pg_ver:
5238 device_remove_file(wl->dev, &dev_attr_hw_pg_ver);
5239
5240 out_bt_coex_state:
5241 device_remove_file(wl->dev, &dev_attr_bt_coex_state);
5242
5243 out_irq:
5244 free_irq(wl->irq, wl);
5245
5246 out_free_hw:
5247 wl1271_free_hw(wl);
5248
5249 out:
5250 return ret;
5251 }
5252
5253 static int __devexit wl12xx_remove(struct platform_device *pdev)
5254 {
5255 struct wl1271 *wl = platform_get_drvdata(pdev);
5256
5257 if (wl->irq_wake_enabled) {
5258 device_init_wakeup(wl->dev, 0);
5259 disable_irq_wake(wl->irq);
5260 }
5261 wl1271_unregister_hw(wl);
5262 free_irq(wl->irq, wl);
5263 wl1271_free_hw(wl);
5264
5265 return 0;
5266 }
5267
5268 static const struct platform_device_id wl12xx_id_table[] __devinitconst = {
5269 { "wl12xx", 0 },
5270 { } /* Terminating Entry */
5271 };
5272 MODULE_DEVICE_TABLE(platform, wl12xx_id_table);
5273
5274 static struct platform_driver wl12xx_driver = {
5275 .probe = wl12xx_probe,
5276 .remove = __devexit_p(wl12xx_remove),
5277 .id_table = wl12xx_id_table,
5278 .driver = {
5279 .name = "wl12xx_driver",
5280 .owner = THIS_MODULE,
5281 }
5282 };
5283
5284 static int __init wl12xx_init(void)
5285 {
5286 return platform_driver_register(&wl12xx_driver);
5287 }
5288 module_init(wl12xx_init);
5289
5290 static void __exit wl12xx_exit(void)
5291 {
5292 platform_driver_unregister(&wl12xx_driver);
5293 }
5294 module_exit(wl12xx_exit);
5295
5296 u32 wl12xx_debug_level = DEBUG_NONE;
5297 EXPORT_SYMBOL_GPL(wl12xx_debug_level);
5298 module_param_named(debug_level, wl12xx_debug_level, uint, S_IRUSR | S_IWUSR);
5299 MODULE_PARM_DESC(debug_level, "wl12xx debugging level");
5300
5301 module_param_named(fwlog, fwlog_param, charp, 0);
5302 MODULE_PARM_DESC(keymap,
5303 "FW logger options: continuous, ondemand, dbgpins or disable");
5304
5305 module_param(bug_on_recovery, bool, S_IRUSR | S_IWUSR);
5306 MODULE_PARM_DESC(bug_on_recovery, "BUG() on fw recovery");
5307
5308 MODULE_LICENSE("GPL");
5309 MODULE_AUTHOR("Luciano Coelho <coelho@ti.com>");
5310 MODULE_AUTHOR("Juuso Oikarinen <juuso.oikarinen@nokia.com>");