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wl12xx: prevent scheduling while suspending (WoW enabled)
[deliverable/linux.git] / drivers / net / wireless / wl12xx / main.c
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
35 #include "wl12xx.h"
36 #include "wl12xx_80211.h"
37 #include "reg.h"
38 #include "io.h"
39 #include "event.h"
40 #include "tx.h"
41 #include "rx.h"
42 #include "ps.h"
43 #include "init.h"
44 #include "debugfs.h"
45 #include "cmd.h"
46 #include "boot.h"
47 #include "testmode.h"
48 #include "scan.h"
49
50 #define WL1271_BOOT_RETRIES 3
51
52 static struct conf_drv_settings default_conf = {
53 .sg = {
54 .sta_params = {
55 [CONF_SG_BT_PER_THRESHOLD] = 7500,
56 [CONF_SG_HV3_MAX_OVERRIDE] = 0,
57 [CONF_SG_BT_NFS_SAMPLE_INTERVAL] = 400,
58 [CONF_SG_BT_LOAD_RATIO] = 200,
59 [CONF_SG_AUTO_PS_MODE] = 1,
60 [CONF_SG_AUTO_SCAN_PROBE_REQ] = 170,
61 [CONF_SG_ACTIVE_SCAN_DURATION_FACTOR_HV3] = 50,
62 [CONF_SG_ANTENNA_CONFIGURATION] = 0,
63 [CONF_SG_BEACON_MISS_PERCENT] = 60,
64 [CONF_SG_RATE_ADAPT_THRESH] = 12,
65 [CONF_SG_RATE_ADAPT_SNR] = 0,
66 [CONF_SG_WLAN_PS_BT_ACL_MASTER_MIN_BR] = 10,
67 [CONF_SG_WLAN_PS_BT_ACL_MASTER_MAX_BR] = 30,
68 [CONF_SG_WLAN_PS_MAX_BT_ACL_MASTER_BR] = 8,
69 [CONF_SG_WLAN_PS_BT_ACL_SLAVE_MIN_BR] = 20,
70 [CONF_SG_WLAN_PS_BT_ACL_SLAVE_MAX_BR] = 50,
71 /* Note: with UPSD, this should be 4 */
72 [CONF_SG_WLAN_PS_MAX_BT_ACL_SLAVE_BR] = 8,
73 [CONF_SG_WLAN_PS_BT_ACL_MASTER_MIN_EDR] = 7,
74 [CONF_SG_WLAN_PS_BT_ACL_MASTER_MAX_EDR] = 25,
75 [CONF_SG_WLAN_PS_MAX_BT_ACL_MASTER_EDR] = 20,
76 /* Note: with UPDS, this should be 15 */
77 [CONF_SG_WLAN_PS_BT_ACL_SLAVE_MIN_EDR] = 8,
78 /* Note: with UPDS, this should be 50 */
79 [CONF_SG_WLAN_PS_BT_ACL_SLAVE_MAX_EDR] = 40,
80 /* Note: with UPDS, this should be 10 */
81 [CONF_SG_WLAN_PS_MAX_BT_ACL_SLAVE_EDR] = 20,
82 [CONF_SG_RXT] = 1200,
83 [CONF_SG_TXT] = 1000,
84 [CONF_SG_ADAPTIVE_RXT_TXT] = 1,
85 [CONF_SG_PS_POLL_TIMEOUT] = 10,
86 [CONF_SG_UPSD_TIMEOUT] = 10,
87 [CONF_SG_WLAN_ACTIVE_BT_ACL_MASTER_MIN_EDR] = 7,
88 [CONF_SG_WLAN_ACTIVE_BT_ACL_MASTER_MAX_EDR] = 15,
89 [CONF_SG_WLAN_ACTIVE_MAX_BT_ACL_MASTER_EDR] = 15,
90 [CONF_SG_WLAN_ACTIVE_BT_ACL_SLAVE_MIN_EDR] = 8,
91 [CONF_SG_WLAN_ACTIVE_BT_ACL_SLAVE_MAX_EDR] = 20,
92 [CONF_SG_WLAN_ACTIVE_MAX_BT_ACL_SLAVE_EDR] = 15,
93 [CONF_SG_WLAN_ACTIVE_BT_ACL_MIN_BR] = 20,
94 [CONF_SG_WLAN_ACTIVE_BT_ACL_MAX_BR] = 50,
95 [CONF_SG_WLAN_ACTIVE_MAX_BT_ACL_BR] = 10,
96 [CONF_SG_PASSIVE_SCAN_DURATION_FACTOR_HV3] = 200,
97 [CONF_SG_PASSIVE_SCAN_DURATION_FACTOR_A2DP] = 800,
98 [CONF_SG_PASSIVE_SCAN_A2DP_BT_TIME] = 75,
99 [CONF_SG_PASSIVE_SCAN_A2DP_WLAN_TIME] = 15,
100 [CONF_SG_HV3_MAX_SERVED] = 6,
101 [CONF_SG_DHCP_TIME] = 5000,
102 [CONF_SG_ACTIVE_SCAN_DURATION_FACTOR_A2DP] = 100,
103 },
104 .ap_params = {
105 [CONF_SG_BT_PER_THRESHOLD] = 7500,
106 [CONF_SG_HV3_MAX_OVERRIDE] = 0,
107 [CONF_SG_BT_NFS_SAMPLE_INTERVAL] = 400,
108 [CONF_SG_BT_LOAD_RATIO] = 50,
109 [CONF_SG_AUTO_PS_MODE] = 1,
110 [CONF_SG_AUTO_SCAN_PROBE_REQ] = 170,
111 [CONF_SG_ACTIVE_SCAN_DURATION_FACTOR_HV3] = 50,
112 [CONF_SG_ANTENNA_CONFIGURATION] = 0,
113 [CONF_SG_BEACON_MISS_PERCENT] = 60,
114 [CONF_SG_RATE_ADAPT_THRESH] = 64,
115 [CONF_SG_RATE_ADAPT_SNR] = 1,
116 [CONF_SG_WLAN_PS_BT_ACL_MASTER_MIN_BR] = 10,
117 [CONF_SG_WLAN_PS_BT_ACL_MASTER_MAX_BR] = 25,
118 [CONF_SG_WLAN_PS_MAX_BT_ACL_MASTER_BR] = 25,
119 [CONF_SG_WLAN_PS_BT_ACL_SLAVE_MIN_BR] = 20,
120 [CONF_SG_WLAN_PS_BT_ACL_SLAVE_MAX_BR] = 25,
121 [CONF_SG_WLAN_PS_MAX_BT_ACL_SLAVE_BR] = 25,
122 [CONF_SG_WLAN_PS_BT_ACL_MASTER_MIN_EDR] = 7,
123 [CONF_SG_WLAN_PS_BT_ACL_MASTER_MAX_EDR] = 25,
124 [CONF_SG_WLAN_PS_MAX_BT_ACL_MASTER_EDR] = 25,
125 [CONF_SG_WLAN_PS_BT_ACL_SLAVE_MIN_EDR] = 8,
126 [CONF_SG_WLAN_PS_BT_ACL_SLAVE_MAX_EDR] = 25,
127 [CONF_SG_WLAN_PS_MAX_BT_ACL_SLAVE_EDR] = 25,
128 [CONF_SG_RXT] = 1200,
129 [CONF_SG_TXT] = 1000,
130 [CONF_SG_ADAPTIVE_RXT_TXT] = 1,
131 [CONF_SG_PS_POLL_TIMEOUT] = 10,
132 [CONF_SG_UPSD_TIMEOUT] = 10,
133 [CONF_SG_WLAN_ACTIVE_BT_ACL_MASTER_MIN_EDR] = 7,
134 [CONF_SG_WLAN_ACTIVE_BT_ACL_MASTER_MAX_EDR] = 15,
135 [CONF_SG_WLAN_ACTIVE_MAX_BT_ACL_MASTER_EDR] = 15,
136 [CONF_SG_WLAN_ACTIVE_BT_ACL_SLAVE_MIN_EDR] = 8,
137 [CONF_SG_WLAN_ACTIVE_BT_ACL_SLAVE_MAX_EDR] = 20,
138 [CONF_SG_WLAN_ACTIVE_MAX_BT_ACL_SLAVE_EDR] = 15,
139 [CONF_SG_WLAN_ACTIVE_BT_ACL_MIN_BR] = 20,
140 [CONF_SG_WLAN_ACTIVE_BT_ACL_MAX_BR] = 50,
141 [CONF_SG_WLAN_ACTIVE_MAX_BT_ACL_BR] = 10,
142 [CONF_SG_PASSIVE_SCAN_DURATION_FACTOR_HV3] = 200,
143 [CONF_SG_PASSIVE_SCAN_DURATION_FACTOR_A2DP] = 800,
144 [CONF_SG_PASSIVE_SCAN_A2DP_BT_TIME] = 75,
145 [CONF_SG_PASSIVE_SCAN_A2DP_WLAN_TIME] = 15,
146 [CONF_SG_HV3_MAX_SERVED] = 6,
147 [CONF_SG_DHCP_TIME] = 5000,
148 [CONF_SG_ACTIVE_SCAN_DURATION_FACTOR_A2DP] = 100,
149 [CONF_SG_TEMP_PARAM_1] = 0,
150 [CONF_SG_TEMP_PARAM_2] = 0,
151 [CONF_SG_TEMP_PARAM_3] = 0,
152 [CONF_SG_TEMP_PARAM_4] = 0,
153 [CONF_SG_TEMP_PARAM_5] = 0,
154 [CONF_SG_AP_BEACON_MISS_TX] = 3,
155 [CONF_SG_RX_WINDOW_LENGTH] = 6,
156 [CONF_SG_AP_CONNECTION_PROTECTION_TIME] = 50,
157 [CONF_SG_TEMP_PARAM_6] = 1,
158 },
159 .state = CONF_SG_PROTECTIVE,
160 },
161 .rx = {
162 .rx_msdu_life_time = 512000,
163 .packet_detection_threshold = 0,
164 .ps_poll_timeout = 15,
165 .upsd_timeout = 15,
166 .rts_threshold = IEEE80211_MAX_RTS_THRESHOLD,
167 .rx_cca_threshold = 0,
168 .irq_blk_threshold = 0xFFFF,
169 .irq_pkt_threshold = 0,
170 .irq_timeout = 600,
171 .queue_type = CONF_RX_QUEUE_TYPE_LOW_PRIORITY,
172 },
173 .tx = {
174 .tx_energy_detection = 0,
175 .sta_rc_conf = {
176 .enabled_rates = 0,
177 .short_retry_limit = 10,
178 .long_retry_limit = 10,
179 .aflags = 0,
180 },
181 .ac_conf_count = 4,
182 .ac_conf = {
183 [CONF_TX_AC_BE] = {
184 .ac = CONF_TX_AC_BE,
185 .cw_min = 15,
186 .cw_max = 63,
187 .aifsn = 3,
188 .tx_op_limit = 0,
189 },
190 [CONF_TX_AC_BK] = {
191 .ac = CONF_TX_AC_BK,
192 .cw_min = 15,
193 .cw_max = 63,
194 .aifsn = 7,
195 .tx_op_limit = 0,
196 },
197 [CONF_TX_AC_VI] = {
198 .ac = CONF_TX_AC_VI,
199 .cw_min = 15,
200 .cw_max = 63,
201 .aifsn = CONF_TX_AIFS_PIFS,
202 .tx_op_limit = 3008,
203 },
204 [CONF_TX_AC_VO] = {
205 .ac = CONF_TX_AC_VO,
206 .cw_min = 15,
207 .cw_max = 63,
208 .aifsn = CONF_TX_AIFS_PIFS,
209 .tx_op_limit = 1504,
210 },
211 },
212 .ap_max_tx_retries = 100,
213 .tid_conf_count = 4,
214 .tid_conf = {
215 [CONF_TX_AC_BE] = {
216 .queue_id = CONF_TX_AC_BE,
217 .channel_type = CONF_CHANNEL_TYPE_EDCF,
218 .tsid = CONF_TX_AC_BE,
219 .ps_scheme = CONF_PS_SCHEME_LEGACY,
220 .ack_policy = CONF_ACK_POLICY_LEGACY,
221 .apsd_conf = {0, 0},
222 },
223 [CONF_TX_AC_BK] = {
224 .queue_id = CONF_TX_AC_BK,
225 .channel_type = CONF_CHANNEL_TYPE_EDCF,
226 .tsid = CONF_TX_AC_BK,
227 .ps_scheme = CONF_PS_SCHEME_LEGACY,
228 .ack_policy = CONF_ACK_POLICY_LEGACY,
229 .apsd_conf = {0, 0},
230 },
231 [CONF_TX_AC_VI] = {
232 .queue_id = CONF_TX_AC_VI,
233 .channel_type = CONF_CHANNEL_TYPE_EDCF,
234 .tsid = CONF_TX_AC_VI,
235 .ps_scheme = CONF_PS_SCHEME_LEGACY,
236 .ack_policy = CONF_ACK_POLICY_LEGACY,
237 .apsd_conf = {0, 0},
238 },
239 [CONF_TX_AC_VO] = {
240 .queue_id = CONF_TX_AC_VO,
241 .channel_type = CONF_CHANNEL_TYPE_EDCF,
242 .tsid = CONF_TX_AC_VO,
243 .ps_scheme = CONF_PS_SCHEME_LEGACY,
244 .ack_policy = CONF_ACK_POLICY_LEGACY,
245 .apsd_conf = {0, 0},
246 },
247 },
248 .frag_threshold = IEEE80211_MAX_FRAG_THRESHOLD,
249 .tx_compl_timeout = 700,
250 .tx_compl_threshold = 4,
251 .basic_rate = CONF_HW_BIT_RATE_1MBPS,
252 .basic_rate_5 = CONF_HW_BIT_RATE_6MBPS,
253 .tmpl_short_retry_limit = 10,
254 .tmpl_long_retry_limit = 10,
255 },
256 .conn = {
257 .wake_up_event = CONF_WAKE_UP_EVENT_DTIM,
258 .listen_interval = 1,
259 .bcn_filt_mode = CONF_BCN_FILT_MODE_ENABLED,
260 .bcn_filt_ie_count = 2,
261 .bcn_filt_ie = {
262 [0] = {
263 .ie = WLAN_EID_CHANNEL_SWITCH,
264 .rule = CONF_BCN_RULE_PASS_ON_APPEARANCE,
265 },
266 [1] = {
267 .ie = WLAN_EID_HT_INFORMATION,
268 .rule = CONF_BCN_RULE_PASS_ON_CHANGE,
269 },
270 },
271 .synch_fail_thold = 10,
272 .bss_lose_timeout = 100,
273 .beacon_rx_timeout = 10000,
274 .broadcast_timeout = 20000,
275 .rx_broadcast_in_ps = 1,
276 .ps_poll_threshold = 10,
277 .ps_poll_recovery_period = 700,
278 .bet_enable = CONF_BET_MODE_ENABLE,
279 .bet_max_consecutive = 50,
280 .psm_entry_retries = 5,
281 .psm_exit_retries = 16,
282 .psm_entry_nullfunc_retries = 3,
283 .psm_entry_hangover_period = 1,
284 .keep_alive_interval = 55000,
285 .max_listen_interval = 20,
286 },
287 .itrim = {
288 .enable = false,
289 .timeout = 50000,
290 },
291 .pm_config = {
292 .host_clk_settling_time = 5000,
293 .host_fast_wakeup_support = false
294 },
295 .roam_trigger = {
296 .trigger_pacing = 1,
297 .avg_weight_rssi_beacon = 20,
298 .avg_weight_rssi_data = 10,
299 .avg_weight_snr_beacon = 20,
300 .avg_weight_snr_data = 10,
301 },
302 .scan = {
303 .min_dwell_time_active = 7500,
304 .max_dwell_time_active = 30000,
305 .min_dwell_time_passive = 100000,
306 .max_dwell_time_passive = 100000,
307 .num_probe_reqs = 2,
308 },
309 .sched_scan = {
310 /* sched_scan requires dwell times in TU instead of TU/1000 */
311 .min_dwell_time_active = 8,
312 .max_dwell_time_active = 30,
313 .dwell_time_passive = 100,
314 .num_probe_reqs = 2,
315 .rssi_threshold = -90,
316 .snr_threshold = 0,
317 },
318 .rf = {
319 .tx_per_channel_power_compensation_2 = {
320 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
321 },
322 .tx_per_channel_power_compensation_5 = {
323 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
324 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
325 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
326 },
327 },
328 .ht = {
329 .tx_ba_win_size = 64,
330 .inactivity_timeout = 10000,
331 },
332 .mem_wl127x = {
333 .num_stations = 1,
334 .ssid_profiles = 1,
335 .rx_block_num = 70,
336 .tx_min_block_num = 40,
337 .dynamic_memory = 1,
338 .min_req_tx_blocks = 100,
339 .min_req_rx_blocks = 22,
340 .tx_min = 27,
341 },
342 .mem_wl128x = {
343 .num_stations = 1,
344 .ssid_profiles = 1,
345 .rx_block_num = 40,
346 .tx_min_block_num = 40,
347 .dynamic_memory = 1,
348 .min_req_tx_blocks = 45,
349 .min_req_rx_blocks = 22,
350 .tx_min = 27,
351 },
352 .fm_coex = {
353 .enable = true,
354 .swallow_period = 5,
355 .n_divider_fref_set_1 = 0xff, /* default */
356 .n_divider_fref_set_2 = 12,
357 .m_divider_fref_set_1 = 148,
358 .m_divider_fref_set_2 = 0xffff, /* default */
359 .coex_pll_stabilization_time = 0xffffffff, /* default */
360 .ldo_stabilization_time = 0xffff, /* default */
361 .fm_disturbed_band_margin = 0xff, /* default */
362 .swallow_clk_diff = 0xff, /* default */
363 },
364 .hci_io_ds = HCI_IO_DS_6MA,
365 };
366
367 static void __wl1271_op_remove_interface(struct wl1271 *wl,
368 bool reset_tx_queues);
369 static void wl1271_free_ap_keys(struct wl1271 *wl);
370
371
372 static void wl1271_device_release(struct device *dev)
373 {
374
375 }
376
377 static struct platform_device wl1271_device = {
378 .name = "wl1271",
379 .id = -1,
380
381 /* device model insists to have a release function */
382 .dev = {
383 .release = wl1271_device_release,
384 },
385 };
386
387 static DEFINE_MUTEX(wl_list_mutex);
388 static LIST_HEAD(wl_list);
389
390 static int wl1271_dev_notify(struct notifier_block *me, unsigned long what,
391 void *arg)
392 {
393 struct net_device *dev = arg;
394 struct wireless_dev *wdev;
395 struct wiphy *wiphy;
396 struct ieee80211_hw *hw;
397 struct wl1271 *wl;
398 struct wl1271 *wl_temp;
399 int ret = 0;
400
401 /* Check that this notification is for us. */
402 if (what != NETDEV_CHANGE)
403 return NOTIFY_DONE;
404
405 wdev = dev->ieee80211_ptr;
406 if (wdev == NULL)
407 return NOTIFY_DONE;
408
409 wiphy = wdev->wiphy;
410 if (wiphy == NULL)
411 return NOTIFY_DONE;
412
413 hw = wiphy_priv(wiphy);
414 if (hw == NULL)
415 return NOTIFY_DONE;
416
417 wl_temp = hw->priv;
418 mutex_lock(&wl_list_mutex);
419 list_for_each_entry(wl, &wl_list, list) {
420 if (wl == wl_temp)
421 break;
422 }
423 mutex_unlock(&wl_list_mutex);
424 if (wl != wl_temp)
425 return NOTIFY_DONE;
426
427 mutex_lock(&wl->mutex);
428
429 if (wl->state == WL1271_STATE_OFF)
430 goto out;
431
432 if (!test_bit(WL1271_FLAG_STA_ASSOCIATED, &wl->flags))
433 goto out;
434
435 ret = wl1271_ps_elp_wakeup(wl);
436 if (ret < 0)
437 goto out;
438
439 if ((dev->operstate == IF_OPER_UP) &&
440 !test_and_set_bit(WL1271_FLAG_STA_STATE_SENT, &wl->flags)) {
441 wl1271_cmd_set_sta_state(wl);
442 wl1271_info("Association completed.");
443 }
444
445 wl1271_ps_elp_sleep(wl);
446
447 out:
448 mutex_unlock(&wl->mutex);
449
450 return NOTIFY_OK;
451 }
452
453 static int wl1271_reg_notify(struct wiphy *wiphy,
454 struct regulatory_request *request)
455 {
456 struct ieee80211_supported_band *band;
457 struct ieee80211_channel *ch;
458 int i;
459
460 band = wiphy->bands[IEEE80211_BAND_5GHZ];
461 for (i = 0; i < band->n_channels; i++) {
462 ch = &band->channels[i];
463 if (ch->flags & IEEE80211_CHAN_DISABLED)
464 continue;
465
466 if (ch->flags & IEEE80211_CHAN_RADAR)
467 ch->flags |= IEEE80211_CHAN_NO_IBSS |
468 IEEE80211_CHAN_PASSIVE_SCAN;
469
470 }
471
472 return 0;
473 }
474
475 static void wl1271_conf_init(struct wl1271 *wl)
476 {
477
478 /*
479 * This function applies the default configuration to the driver. This
480 * function is invoked upon driver load (spi probe.)
481 *
482 * The configuration is stored in a run-time structure in order to
483 * facilitate for run-time adjustment of any of the parameters. Making
484 * changes to the configuration structure will apply the new values on
485 * the next interface up (wl1271_op_start.)
486 */
487
488 /* apply driver default configuration */
489 memcpy(&wl->conf, &default_conf, sizeof(default_conf));
490 }
491
492
493 static int wl1271_plt_init(struct wl1271 *wl)
494 {
495 struct conf_tx_ac_category *conf_ac;
496 struct conf_tx_tid *conf_tid;
497 int ret, i;
498
499 if (wl->chip.id == CHIP_ID_1283_PG20)
500 ret = wl128x_cmd_general_parms(wl);
501 else
502 ret = wl1271_cmd_general_parms(wl);
503 if (ret < 0)
504 return ret;
505
506 if (wl->chip.id == CHIP_ID_1283_PG20)
507 ret = wl128x_cmd_radio_parms(wl);
508 else
509 ret = wl1271_cmd_radio_parms(wl);
510 if (ret < 0)
511 return ret;
512
513 if (wl->chip.id != CHIP_ID_1283_PG20) {
514 ret = wl1271_cmd_ext_radio_parms(wl);
515 if (ret < 0)
516 return ret;
517 }
518 if (ret < 0)
519 return ret;
520
521 /* Chip-specific initializations */
522 ret = wl1271_chip_specific_init(wl);
523 if (ret < 0)
524 return ret;
525
526 ret = wl1271_sta_init_templates_config(wl);
527 if (ret < 0)
528 return ret;
529
530 ret = wl1271_acx_init_mem_config(wl);
531 if (ret < 0)
532 return ret;
533
534 /* PHY layer config */
535 ret = wl1271_init_phy_config(wl);
536 if (ret < 0)
537 goto out_free_memmap;
538
539 ret = wl1271_acx_dco_itrim_params(wl);
540 if (ret < 0)
541 goto out_free_memmap;
542
543 /* Initialize connection monitoring thresholds */
544 ret = wl1271_acx_conn_monit_params(wl, false);
545 if (ret < 0)
546 goto out_free_memmap;
547
548 /* Bluetooth WLAN coexistence */
549 ret = wl1271_init_pta(wl);
550 if (ret < 0)
551 goto out_free_memmap;
552
553 /* FM WLAN coexistence */
554 ret = wl1271_acx_fm_coex(wl);
555 if (ret < 0)
556 goto out_free_memmap;
557
558 /* Energy detection */
559 ret = wl1271_init_energy_detection(wl);
560 if (ret < 0)
561 goto out_free_memmap;
562
563 ret = wl1271_acx_sta_mem_cfg(wl);
564 if (ret < 0)
565 goto out_free_memmap;
566
567 /* Default fragmentation threshold */
568 ret = wl1271_acx_frag_threshold(wl, wl->conf.tx.frag_threshold);
569 if (ret < 0)
570 goto out_free_memmap;
571
572 /* Default TID/AC configuration */
573 BUG_ON(wl->conf.tx.tid_conf_count != wl->conf.tx.ac_conf_count);
574 for (i = 0; i < wl->conf.tx.tid_conf_count; i++) {
575 conf_ac = &wl->conf.tx.ac_conf[i];
576 ret = wl1271_acx_ac_cfg(wl, conf_ac->ac, conf_ac->cw_min,
577 conf_ac->cw_max, conf_ac->aifsn,
578 conf_ac->tx_op_limit);
579 if (ret < 0)
580 goto out_free_memmap;
581
582 conf_tid = &wl->conf.tx.tid_conf[i];
583 ret = wl1271_acx_tid_cfg(wl, conf_tid->queue_id,
584 conf_tid->channel_type,
585 conf_tid->tsid,
586 conf_tid->ps_scheme,
587 conf_tid->ack_policy,
588 conf_tid->apsd_conf[0],
589 conf_tid->apsd_conf[1]);
590 if (ret < 0)
591 goto out_free_memmap;
592 }
593
594 /* Enable data path */
595 ret = wl1271_cmd_data_path(wl, 1);
596 if (ret < 0)
597 goto out_free_memmap;
598
599 /* Configure for CAM power saving (ie. always active) */
600 ret = wl1271_acx_sleep_auth(wl, WL1271_PSM_CAM);
601 if (ret < 0)
602 goto out_free_memmap;
603
604 /* configure PM */
605 ret = wl1271_acx_pm_config(wl);
606 if (ret < 0)
607 goto out_free_memmap;
608
609 return 0;
610
611 out_free_memmap:
612 kfree(wl->target_mem_map);
613 wl->target_mem_map = NULL;
614
615 return ret;
616 }
617
618 static void wl1271_irq_ps_regulate_link(struct wl1271 *wl, u8 hlid, u8 tx_blks)
619 {
620 bool fw_ps;
621
622 /* only regulate station links */
623 if (hlid < WL1271_AP_STA_HLID_START)
624 return;
625
626 fw_ps = test_bit(hlid, (unsigned long *)&wl->ap_fw_ps_map);
627
628 /*
629 * Wake up from high level PS if the STA is asleep with too little
630 * blocks in FW or if the STA is awake.
631 */
632 if (!fw_ps || tx_blks < WL1271_PS_STA_MAX_BLOCKS)
633 wl1271_ps_link_end(wl, hlid);
634
635 /* Start high-level PS if the STA is asleep with enough blocks in FW */
636 else if (fw_ps && tx_blks >= WL1271_PS_STA_MAX_BLOCKS)
637 wl1271_ps_link_start(wl, hlid, true);
638 }
639
640 static void wl1271_irq_update_links_status(struct wl1271 *wl,
641 struct wl1271_fw_ap_status *status)
642 {
643 u32 cur_fw_ps_map;
644 u8 hlid;
645
646 cur_fw_ps_map = le32_to_cpu(status->link_ps_bitmap);
647 if (wl->ap_fw_ps_map != cur_fw_ps_map) {
648 wl1271_debug(DEBUG_PSM,
649 "link ps prev 0x%x cur 0x%x changed 0x%x",
650 wl->ap_fw_ps_map, cur_fw_ps_map,
651 wl->ap_fw_ps_map ^ cur_fw_ps_map);
652
653 wl->ap_fw_ps_map = cur_fw_ps_map;
654 }
655
656 for (hlid = WL1271_AP_STA_HLID_START; hlid < AP_MAX_LINKS; hlid++) {
657 u8 cnt = status->tx_lnk_free_blks[hlid] -
658 wl->links[hlid].prev_freed_blks;
659
660 wl->links[hlid].prev_freed_blks =
661 status->tx_lnk_free_blks[hlid];
662 wl->links[hlid].allocated_blks -= cnt;
663
664 wl1271_irq_ps_regulate_link(wl, hlid,
665 wl->links[hlid].allocated_blks);
666 }
667 }
668
669 static void wl1271_fw_status(struct wl1271 *wl,
670 struct wl1271_fw_full_status *full_status)
671 {
672 struct wl1271_fw_common_status *status = &full_status->common;
673 struct timespec ts;
674 u32 old_tx_blk_count = wl->tx_blocks_available;
675 u32 freed_blocks = 0;
676 int i;
677
678 if (wl->bss_type == BSS_TYPE_AP_BSS) {
679 wl1271_raw_read(wl, FW_STATUS_ADDR, status,
680 sizeof(struct wl1271_fw_ap_status), false);
681 } else {
682 wl1271_raw_read(wl, FW_STATUS_ADDR, status,
683 sizeof(struct wl1271_fw_sta_status), false);
684 }
685
686 wl1271_debug(DEBUG_IRQ, "intr: 0x%x (fw_rx_counter = %d, "
687 "drv_rx_counter = %d, tx_results_counter = %d)",
688 status->intr,
689 status->fw_rx_counter,
690 status->drv_rx_counter,
691 status->tx_results_counter);
692
693 /* update number of available TX blocks */
694 for (i = 0; i < NUM_TX_QUEUES; i++) {
695 freed_blocks += le32_to_cpu(status->tx_released_blks[i]) -
696 wl->tx_blocks_freed[i];
697
698 wl->tx_blocks_freed[i] =
699 le32_to_cpu(status->tx_released_blks[i]);
700 }
701
702 wl->tx_allocated_blocks -= freed_blocks;
703
704 if (wl->bss_type == BSS_TYPE_AP_BSS) {
705 /* Update num of allocated TX blocks per link and ps status */
706 wl1271_irq_update_links_status(wl, &full_status->ap);
707 wl->tx_blocks_available += freed_blocks;
708 } else {
709 int avail = full_status->sta.tx_total - wl->tx_allocated_blocks;
710
711 /*
712 * The FW might change the total number of TX memblocks before
713 * we get a notification about blocks being released. Thus, the
714 * available blocks calculation might yield a temporary result
715 * which is lower than the actual available blocks. Keeping in
716 * mind that only blocks that were allocated can be moved from
717 * TX to RX, tx_blocks_available should never decrease here.
718 */
719 wl->tx_blocks_available = max((int)wl->tx_blocks_available,
720 avail);
721 }
722
723 /* if more blocks are available now, tx work can be scheduled */
724 if (wl->tx_blocks_available > old_tx_blk_count)
725 clear_bit(WL1271_FLAG_FW_TX_BUSY, &wl->flags);
726
727 /* update the host-chipset time offset */
728 getnstimeofday(&ts);
729 wl->time_offset = (timespec_to_ns(&ts) >> 10) -
730 (s64)le32_to_cpu(status->fw_localtime);
731 }
732
733 static void wl1271_flush_deferred_work(struct wl1271 *wl)
734 {
735 struct sk_buff *skb;
736
737 /* Pass all received frames to the network stack */
738 while ((skb = skb_dequeue(&wl->deferred_rx_queue)))
739 ieee80211_rx_ni(wl->hw, skb);
740
741 /* Return sent skbs to the network stack */
742 while ((skb = skb_dequeue(&wl->deferred_tx_queue)))
743 ieee80211_tx_status(wl->hw, skb);
744 }
745
746 static void wl1271_netstack_work(struct work_struct *work)
747 {
748 struct wl1271 *wl =
749 container_of(work, struct wl1271, netstack_work);
750
751 do {
752 wl1271_flush_deferred_work(wl);
753 } while (skb_queue_len(&wl->deferred_rx_queue));
754 }
755
756 #define WL1271_IRQ_MAX_LOOPS 256
757
758 irqreturn_t wl1271_irq(int irq, void *cookie)
759 {
760 int ret;
761 u32 intr;
762 int loopcount = WL1271_IRQ_MAX_LOOPS;
763 struct wl1271 *wl = (struct wl1271 *)cookie;
764 bool done = false;
765 unsigned int defer_count;
766 unsigned long flags;
767
768 /* TX might be handled here, avoid redundant work */
769 set_bit(WL1271_FLAG_TX_PENDING, &wl->flags);
770 cancel_work_sync(&wl->tx_work);
771
772 /*
773 * In case edge triggered interrupt must be used, we cannot iterate
774 * more than once without introducing race conditions with the hardirq.
775 */
776 if (wl->platform_quirks & WL12XX_PLATFORM_QUIRK_EDGE_IRQ)
777 loopcount = 1;
778
779 mutex_lock(&wl->mutex);
780
781 wl1271_debug(DEBUG_IRQ, "IRQ work");
782
783 if (unlikely(wl->state == WL1271_STATE_OFF))
784 goto out;
785
786 ret = wl1271_ps_elp_wakeup(wl);
787 if (ret < 0)
788 goto out;
789
790 while (!done && loopcount--) {
791 /*
792 * In order to avoid a race with the hardirq, clear the flag
793 * before acknowledging the chip. Since the mutex is held,
794 * wl1271_ps_elp_wakeup cannot be called concurrently.
795 */
796 clear_bit(WL1271_FLAG_IRQ_RUNNING, &wl->flags);
797 smp_mb__after_clear_bit();
798
799 wl1271_fw_status(wl, wl->fw_status);
800 intr = le32_to_cpu(wl->fw_status->common.intr);
801 intr &= WL1271_INTR_MASK;
802 if (!intr) {
803 done = true;
804 continue;
805 }
806
807 if (unlikely(intr & WL1271_ACX_INTR_WATCHDOG)) {
808 wl1271_error("watchdog interrupt received! "
809 "starting recovery.");
810 ieee80211_queue_work(wl->hw, &wl->recovery_work);
811
812 /* restarting the chip. ignore any other interrupt. */
813 goto out;
814 }
815
816 if (likely(intr & WL1271_ACX_INTR_DATA)) {
817 wl1271_debug(DEBUG_IRQ, "WL1271_ACX_INTR_DATA");
818
819 wl1271_rx(wl, &wl->fw_status->common);
820
821 /* Check if any tx blocks were freed */
822 spin_lock_irqsave(&wl->wl_lock, flags);
823 if (!test_bit(WL1271_FLAG_FW_TX_BUSY, &wl->flags) &&
824 wl->tx_queue_count) {
825 spin_unlock_irqrestore(&wl->wl_lock, flags);
826 /*
827 * In order to avoid starvation of the TX path,
828 * call the work function directly.
829 */
830 wl1271_tx_work_locked(wl);
831 } else {
832 spin_unlock_irqrestore(&wl->wl_lock, flags);
833 }
834
835 /* check for tx results */
836 if (wl->fw_status->common.tx_results_counter !=
837 (wl->tx_results_count & 0xff))
838 wl1271_tx_complete(wl);
839
840 /* Make sure the deferred queues don't get too long */
841 defer_count = skb_queue_len(&wl->deferred_tx_queue) +
842 skb_queue_len(&wl->deferred_rx_queue);
843 if (defer_count > WL1271_DEFERRED_QUEUE_LIMIT)
844 wl1271_flush_deferred_work(wl);
845 }
846
847 if (intr & WL1271_ACX_INTR_EVENT_A) {
848 wl1271_debug(DEBUG_IRQ, "WL1271_ACX_INTR_EVENT_A");
849 wl1271_event_handle(wl, 0);
850 }
851
852 if (intr & WL1271_ACX_INTR_EVENT_B) {
853 wl1271_debug(DEBUG_IRQ, "WL1271_ACX_INTR_EVENT_B");
854 wl1271_event_handle(wl, 1);
855 }
856
857 if (intr & WL1271_ACX_INTR_INIT_COMPLETE)
858 wl1271_debug(DEBUG_IRQ,
859 "WL1271_ACX_INTR_INIT_COMPLETE");
860
861 if (intr & WL1271_ACX_INTR_HW_AVAILABLE)
862 wl1271_debug(DEBUG_IRQ, "WL1271_ACX_INTR_HW_AVAILABLE");
863 }
864
865 wl1271_ps_elp_sleep(wl);
866
867 out:
868 spin_lock_irqsave(&wl->wl_lock, flags);
869 /* In case TX was not handled here, queue TX work */
870 clear_bit(WL1271_FLAG_TX_PENDING, &wl->flags);
871 if (!test_bit(WL1271_FLAG_FW_TX_BUSY, &wl->flags) &&
872 wl->tx_queue_count)
873 ieee80211_queue_work(wl->hw, &wl->tx_work);
874 spin_unlock_irqrestore(&wl->wl_lock, flags);
875
876 mutex_unlock(&wl->mutex);
877
878 return IRQ_HANDLED;
879 }
880 EXPORT_SYMBOL_GPL(wl1271_irq);
881
882 static int wl1271_fetch_firmware(struct wl1271 *wl)
883 {
884 const struct firmware *fw;
885 const char *fw_name;
886 int ret;
887
888 switch (wl->bss_type) {
889 case BSS_TYPE_AP_BSS:
890 if (wl->chip.id == CHIP_ID_1283_PG20)
891 fw_name = WL128X_AP_FW_NAME;
892 else
893 fw_name = WL127X_AP_FW_NAME;
894 break;
895 case BSS_TYPE_IBSS:
896 case BSS_TYPE_STA_BSS:
897 if (wl->chip.id == CHIP_ID_1283_PG20)
898 fw_name = WL128X_FW_NAME;
899 else
900 fw_name = WL1271_FW_NAME;
901 break;
902 default:
903 wl1271_error("no compatible firmware for bss_type %d",
904 wl->bss_type);
905 return -EINVAL;
906 }
907
908 wl1271_debug(DEBUG_BOOT, "booting firmware %s", fw_name);
909
910 ret = request_firmware(&fw, fw_name, wl1271_wl_to_dev(wl));
911
912 if (ret < 0) {
913 wl1271_error("could not get firmware: %d", ret);
914 return ret;
915 }
916
917 if (fw->size % 4) {
918 wl1271_error("firmware size is not multiple of 32 bits: %zu",
919 fw->size);
920 ret = -EILSEQ;
921 goto out;
922 }
923
924 vfree(wl->fw);
925 wl->fw_len = fw->size;
926 wl->fw = vmalloc(wl->fw_len);
927
928 if (!wl->fw) {
929 wl1271_error("could not allocate memory for the firmware");
930 ret = -ENOMEM;
931 goto out;
932 }
933
934 memcpy(wl->fw, fw->data, wl->fw_len);
935 wl->fw_bss_type = wl->bss_type;
936 ret = 0;
937
938 out:
939 release_firmware(fw);
940
941 return ret;
942 }
943
944 static int wl1271_fetch_nvs(struct wl1271 *wl)
945 {
946 const struct firmware *fw;
947 int ret;
948
949 ret = request_firmware(&fw, WL12XX_NVS_NAME, wl1271_wl_to_dev(wl));
950
951 if (ret < 0) {
952 wl1271_error("could not get nvs file: %d", ret);
953 return ret;
954 }
955
956 wl->nvs = kmemdup(fw->data, fw->size, GFP_KERNEL);
957
958 if (!wl->nvs) {
959 wl1271_error("could not allocate memory for the nvs file");
960 ret = -ENOMEM;
961 goto out;
962 }
963
964 wl->nvs_len = fw->size;
965
966 out:
967 release_firmware(fw);
968
969 return ret;
970 }
971
972 static void wl1271_recovery_work(struct work_struct *work)
973 {
974 struct wl1271 *wl =
975 container_of(work, struct wl1271, recovery_work);
976
977 mutex_lock(&wl->mutex);
978
979 if (wl->state != WL1271_STATE_ON)
980 goto out;
981
982 wl1271_info("Hardware recovery in progress. FW ver: %s pc: 0x%x",
983 wl->chip.fw_ver_str, wl1271_read32(wl, SCR_PAD4));
984
985 if (test_bit(WL1271_FLAG_STA_ASSOCIATED, &wl->flags))
986 ieee80211_connection_loss(wl->vif);
987
988 /* Prevent spurious TX during FW restart */
989 ieee80211_stop_queues(wl->hw);
990
991 if (wl->sched_scanning) {
992 ieee80211_sched_scan_stopped(wl->hw);
993 wl->sched_scanning = false;
994 }
995
996 /* reboot the chipset */
997 __wl1271_op_remove_interface(wl, false);
998 ieee80211_restart_hw(wl->hw);
999
1000 /*
1001 * Its safe to enable TX now - the queues are stopped after a request
1002 * to restart the HW.
1003 */
1004 ieee80211_wake_queues(wl->hw);
1005
1006 out:
1007 mutex_unlock(&wl->mutex);
1008 }
1009
1010 static void wl1271_fw_wakeup(struct wl1271 *wl)
1011 {
1012 u32 elp_reg;
1013
1014 elp_reg = ELPCTRL_WAKE_UP;
1015 wl1271_raw_write32(wl, HW_ACCESS_ELP_CTRL_REG_ADDR, elp_reg);
1016 }
1017
1018 static int wl1271_setup(struct wl1271 *wl)
1019 {
1020 wl->fw_status = kmalloc(sizeof(*wl->fw_status), GFP_KERNEL);
1021 if (!wl->fw_status)
1022 return -ENOMEM;
1023
1024 wl->tx_res_if = kmalloc(sizeof(*wl->tx_res_if), GFP_KERNEL);
1025 if (!wl->tx_res_if) {
1026 kfree(wl->fw_status);
1027 return -ENOMEM;
1028 }
1029
1030 return 0;
1031 }
1032
1033 static int wl1271_chip_wakeup(struct wl1271 *wl)
1034 {
1035 struct wl1271_partition_set partition;
1036 int ret = 0;
1037
1038 msleep(WL1271_PRE_POWER_ON_SLEEP);
1039 ret = wl1271_power_on(wl);
1040 if (ret < 0)
1041 goto out;
1042 msleep(WL1271_POWER_ON_SLEEP);
1043 wl1271_io_reset(wl);
1044 wl1271_io_init(wl);
1045
1046 /* We don't need a real memory partition here, because we only want
1047 * to use the registers at this point. */
1048 memset(&partition, 0, sizeof(partition));
1049 partition.reg.start = REGISTERS_BASE;
1050 partition.reg.size = REGISTERS_DOWN_SIZE;
1051 wl1271_set_partition(wl, &partition);
1052
1053 /* ELP module wake up */
1054 wl1271_fw_wakeup(wl);
1055
1056 /* whal_FwCtrl_BootSm() */
1057
1058 /* 0. read chip id from CHIP_ID */
1059 wl->chip.id = wl1271_read32(wl, CHIP_ID_B);
1060
1061 /* 1. check if chip id is valid */
1062
1063 switch (wl->chip.id) {
1064 case CHIP_ID_1271_PG10:
1065 wl1271_warning("chip id 0x%x (1271 PG10) support is obsolete",
1066 wl->chip.id);
1067
1068 ret = wl1271_setup(wl);
1069 if (ret < 0)
1070 goto out;
1071 break;
1072 case CHIP_ID_1271_PG20:
1073 wl1271_debug(DEBUG_BOOT, "chip id 0x%x (1271 PG20)",
1074 wl->chip.id);
1075
1076 /* end-of-transaction flag should be set in wl127x AP mode */
1077 if (wl->bss_type == BSS_TYPE_AP_BSS)
1078 wl->quirks |= WL12XX_QUIRK_END_OF_TRANSACTION;
1079
1080 ret = wl1271_setup(wl);
1081 if (ret < 0)
1082 goto out;
1083 break;
1084 case CHIP_ID_1283_PG20:
1085 wl1271_debug(DEBUG_BOOT, "chip id 0x%x (1283 PG20)",
1086 wl->chip.id);
1087
1088 ret = wl1271_setup(wl);
1089 if (ret < 0)
1090 goto out;
1091 if (wl1271_set_block_size(wl))
1092 wl->quirks |= WL12XX_QUIRK_BLOCKSIZE_ALIGNMENT;
1093 break;
1094 case CHIP_ID_1283_PG10:
1095 default:
1096 wl1271_warning("unsupported chip id: 0x%x", wl->chip.id);
1097 ret = -ENODEV;
1098 goto out;
1099 }
1100
1101 /* Make sure the firmware type matches the BSS type */
1102 if (wl->fw == NULL || wl->fw_bss_type != wl->bss_type) {
1103 ret = wl1271_fetch_firmware(wl);
1104 if (ret < 0)
1105 goto out;
1106 }
1107
1108 /* No NVS from netlink, try to get it from the filesystem */
1109 if (wl->nvs == NULL) {
1110 ret = wl1271_fetch_nvs(wl);
1111 if (ret < 0)
1112 goto out;
1113 }
1114
1115 out:
1116 return ret;
1117 }
1118
1119 static unsigned int wl1271_get_fw_ver_quirks(struct wl1271 *wl)
1120 {
1121 unsigned int quirks = 0;
1122 unsigned int *fw_ver = wl->chip.fw_ver;
1123
1124 /* Only for wl127x */
1125 if ((fw_ver[FW_VER_CHIP] == FW_VER_CHIP_WL127X) &&
1126 /* Check STA version */
1127 (((fw_ver[FW_VER_IF_TYPE] == FW_VER_IF_TYPE_STA) &&
1128 (fw_ver[FW_VER_MINOR] < FW_VER_MINOR_1_SPARE_STA_MIN)) ||
1129 /* Check AP version */
1130 ((fw_ver[FW_VER_IF_TYPE] == FW_VER_IF_TYPE_AP) &&
1131 (fw_ver[FW_VER_MINOR] < FW_VER_MINOR_1_SPARE_AP_MIN))))
1132 quirks |= WL12XX_QUIRK_USE_2_SPARE_BLOCKS;
1133
1134 return quirks;
1135 }
1136
1137 int wl1271_plt_start(struct wl1271 *wl)
1138 {
1139 int retries = WL1271_BOOT_RETRIES;
1140 int ret;
1141
1142 mutex_lock(&wl->mutex);
1143
1144 wl1271_notice("power up");
1145
1146 if (wl->state != WL1271_STATE_OFF) {
1147 wl1271_error("cannot go into PLT state because not "
1148 "in off state: %d", wl->state);
1149 ret = -EBUSY;
1150 goto out;
1151 }
1152
1153 wl->bss_type = BSS_TYPE_STA_BSS;
1154
1155 while (retries) {
1156 retries--;
1157 ret = wl1271_chip_wakeup(wl);
1158 if (ret < 0)
1159 goto power_off;
1160
1161 ret = wl1271_boot(wl);
1162 if (ret < 0)
1163 goto power_off;
1164
1165 ret = wl1271_plt_init(wl);
1166 if (ret < 0)
1167 goto irq_disable;
1168
1169 wl->state = WL1271_STATE_PLT;
1170 wl1271_notice("firmware booted in PLT mode (%s)",
1171 wl->chip.fw_ver_str);
1172
1173 /* Check if any quirks are needed with older fw versions */
1174 wl->quirks |= wl1271_get_fw_ver_quirks(wl);
1175 goto out;
1176
1177 irq_disable:
1178 mutex_unlock(&wl->mutex);
1179 /* Unlocking the mutex in the middle of handling is
1180 inherently unsafe. In this case we deem it safe to do,
1181 because we need to let any possibly pending IRQ out of
1182 the system (and while we are WL1271_STATE_OFF the IRQ
1183 work function will not do anything.) Also, any other
1184 possible concurrent operations will fail due to the
1185 current state, hence the wl1271 struct should be safe. */
1186 wl1271_disable_interrupts(wl);
1187 wl1271_flush_deferred_work(wl);
1188 cancel_work_sync(&wl->netstack_work);
1189 mutex_lock(&wl->mutex);
1190 power_off:
1191 wl1271_power_off(wl);
1192 }
1193
1194 wl1271_error("firmware boot in PLT mode failed despite %d retries",
1195 WL1271_BOOT_RETRIES);
1196 out:
1197 mutex_unlock(&wl->mutex);
1198
1199 return ret;
1200 }
1201
1202 static int __wl1271_plt_stop(struct wl1271 *wl)
1203 {
1204 int ret = 0;
1205
1206 wl1271_notice("power down");
1207
1208 if (wl->state != WL1271_STATE_PLT) {
1209 wl1271_error("cannot power down because not in PLT "
1210 "state: %d", wl->state);
1211 ret = -EBUSY;
1212 goto out;
1213 }
1214
1215 wl1271_power_off(wl);
1216
1217 wl->state = WL1271_STATE_OFF;
1218 wl->rx_counter = 0;
1219
1220 mutex_unlock(&wl->mutex);
1221 wl1271_disable_interrupts(wl);
1222 wl1271_flush_deferred_work(wl);
1223 cancel_work_sync(&wl->netstack_work);
1224 cancel_work_sync(&wl->recovery_work);
1225 mutex_lock(&wl->mutex);
1226 out:
1227 return ret;
1228 }
1229
1230 int wl1271_plt_stop(struct wl1271 *wl)
1231 {
1232 int ret;
1233
1234 mutex_lock(&wl->mutex);
1235 ret = __wl1271_plt_stop(wl);
1236 mutex_unlock(&wl->mutex);
1237 return ret;
1238 }
1239
1240 static void wl1271_op_tx(struct ieee80211_hw *hw, struct sk_buff *skb)
1241 {
1242 struct wl1271 *wl = hw->priv;
1243 unsigned long flags;
1244 int q;
1245 u8 hlid = 0;
1246
1247 q = wl1271_tx_get_queue(skb_get_queue_mapping(skb));
1248
1249 if (wl->bss_type == BSS_TYPE_AP_BSS)
1250 hlid = wl1271_tx_get_hlid(skb);
1251
1252 spin_lock_irqsave(&wl->wl_lock, flags);
1253
1254 wl->tx_queue_count++;
1255
1256 /*
1257 * The workqueue is slow to process the tx_queue and we need stop
1258 * the queue here, otherwise the queue will get too long.
1259 */
1260 if (wl->tx_queue_count >= WL1271_TX_QUEUE_HIGH_WATERMARK) {
1261 wl1271_debug(DEBUG_TX, "op_tx: stopping queues");
1262 ieee80211_stop_queues(wl->hw);
1263 set_bit(WL1271_FLAG_TX_QUEUE_STOPPED, &wl->flags);
1264 }
1265
1266 /* queue the packet */
1267 if (wl->bss_type == BSS_TYPE_AP_BSS) {
1268 wl1271_debug(DEBUG_TX, "queue skb hlid %d q %d", hlid, q);
1269 skb_queue_tail(&wl->links[hlid].tx_queue[q], skb);
1270 } else {
1271 skb_queue_tail(&wl->tx_queue[q], skb);
1272 }
1273
1274 /*
1275 * The chip specific setup must run before the first TX packet -
1276 * before that, the tx_work will not be initialized!
1277 */
1278
1279 if (!test_bit(WL1271_FLAG_FW_TX_BUSY, &wl->flags) &&
1280 !test_bit(WL1271_FLAG_TX_PENDING, &wl->flags))
1281 ieee80211_queue_work(wl->hw, &wl->tx_work);
1282
1283 spin_unlock_irqrestore(&wl->wl_lock, flags);
1284 }
1285
1286 int wl1271_tx_dummy_packet(struct wl1271 *wl)
1287 {
1288 unsigned long flags;
1289
1290 spin_lock_irqsave(&wl->wl_lock, flags);
1291 set_bit(WL1271_FLAG_DUMMY_PACKET_PENDING, &wl->flags);
1292 wl->tx_queue_count++;
1293 spin_unlock_irqrestore(&wl->wl_lock, flags);
1294
1295 /* The FW is low on RX memory blocks, so send the dummy packet asap */
1296 if (!test_bit(WL1271_FLAG_FW_TX_BUSY, &wl->flags))
1297 wl1271_tx_work_locked(wl);
1298
1299 /*
1300 * If the FW TX is busy, TX work will be scheduled by the threaded
1301 * interrupt handler function
1302 */
1303 return 0;
1304 }
1305
1306 /*
1307 * The size of the dummy packet should be at least 1400 bytes. However, in
1308 * order to minimize the number of bus transactions, aligning it to 512 bytes
1309 * boundaries could be beneficial, performance wise
1310 */
1311 #define TOTAL_TX_DUMMY_PACKET_SIZE (ALIGN(1400, 512))
1312
1313 static struct sk_buff *wl12xx_alloc_dummy_packet(struct wl1271 *wl)
1314 {
1315 struct sk_buff *skb;
1316 struct ieee80211_hdr_3addr *hdr;
1317 unsigned int dummy_packet_size;
1318
1319 dummy_packet_size = TOTAL_TX_DUMMY_PACKET_SIZE -
1320 sizeof(struct wl1271_tx_hw_descr) - sizeof(*hdr);
1321
1322 skb = dev_alloc_skb(TOTAL_TX_DUMMY_PACKET_SIZE);
1323 if (!skb) {
1324 wl1271_warning("Failed to allocate a dummy packet skb");
1325 return NULL;
1326 }
1327
1328 skb_reserve(skb, sizeof(struct wl1271_tx_hw_descr));
1329
1330 hdr = (struct ieee80211_hdr_3addr *) skb_put(skb, sizeof(*hdr));
1331 memset(hdr, 0, sizeof(*hdr));
1332 hdr->frame_control = cpu_to_le16(IEEE80211_FTYPE_DATA |
1333 IEEE80211_STYPE_NULLFUNC |
1334 IEEE80211_FCTL_TODS);
1335
1336 memset(skb_put(skb, dummy_packet_size), 0, dummy_packet_size);
1337
1338 /* Dummy packets require the TID to be management */
1339 skb->priority = WL1271_TID_MGMT;
1340
1341 /* Initialize all fields that might be used */
1342 skb_set_queue_mapping(skb, 0);
1343 memset(IEEE80211_SKB_CB(skb), 0, sizeof(struct ieee80211_tx_info));
1344
1345 return skb;
1346 }
1347
1348
1349 static struct notifier_block wl1271_dev_notifier = {
1350 .notifier_call = wl1271_dev_notify,
1351 };
1352
1353 static int wl1271_op_suspend(struct ieee80211_hw *hw,
1354 struct cfg80211_wowlan *wow)
1355 {
1356 struct wl1271 *wl = hw->priv;
1357 wl1271_debug(DEBUG_MAC80211, "mac80211 suspend wow=%d", !!wow);
1358 wl->wow_enabled = !!wow;
1359 if (wl->wow_enabled) {
1360 /* flush any remaining work */
1361 wl1271_debug(DEBUG_MAC80211, "flushing remaining works");
1362 flush_delayed_work(&wl->scan_complete_work);
1363
1364 /*
1365 * disable and re-enable interrupts in order to flush
1366 * the threaded_irq
1367 */
1368 wl1271_disable_interrupts(wl);
1369
1370 /*
1371 * set suspended flag to avoid triggering a new threaded_irq
1372 * work. no need for spinlock as interrupts are disabled.
1373 */
1374 set_bit(WL1271_FLAG_SUSPENDED, &wl->flags);
1375
1376 wl1271_enable_interrupts(wl);
1377 flush_work(&wl->tx_work);
1378 flush_delayed_work(&wl->pspoll_work);
1379 flush_delayed_work(&wl->elp_work);
1380 }
1381 return 0;
1382 }
1383
1384 static int wl1271_op_resume(struct ieee80211_hw *hw)
1385 {
1386 struct wl1271 *wl = hw->priv;
1387 wl1271_debug(DEBUG_MAC80211, "mac80211 resume wow=%d",
1388 wl->wow_enabled);
1389
1390 /*
1391 * re-enable irq_work enqueuing, and call irq_work directly if
1392 * there is a pending work.
1393 */
1394 if (wl->wow_enabled) {
1395 struct wl1271 *wl = hw->priv;
1396 unsigned long flags;
1397 bool run_irq_work = false;
1398
1399 spin_lock_irqsave(&wl->wl_lock, flags);
1400 clear_bit(WL1271_FLAG_SUSPENDED, &wl->flags);
1401 if (test_and_clear_bit(WL1271_FLAG_PENDING_WORK, &wl->flags))
1402 run_irq_work = true;
1403 spin_unlock_irqrestore(&wl->wl_lock, flags);
1404
1405 if (run_irq_work) {
1406 wl1271_debug(DEBUG_MAC80211,
1407 "run postponed irq_work directly");
1408 wl1271_irq(0, wl);
1409 wl1271_enable_interrupts(wl);
1410 }
1411 }
1412
1413 return 0;
1414 }
1415
1416 static int wl1271_op_start(struct ieee80211_hw *hw)
1417 {
1418 wl1271_debug(DEBUG_MAC80211, "mac80211 start");
1419
1420 /*
1421 * We have to delay the booting of the hardware because
1422 * we need to know the local MAC address before downloading and
1423 * initializing the firmware. The MAC address cannot be changed
1424 * after boot, and without the proper MAC address, the firmware
1425 * will not function properly.
1426 *
1427 * The MAC address is first known when the corresponding interface
1428 * is added. That is where we will initialize the hardware.
1429 *
1430 * In addition, we currently have different firmwares for AP and managed
1431 * operation. We will know which to boot according to interface type.
1432 */
1433
1434 return 0;
1435 }
1436
1437 static void wl1271_op_stop(struct ieee80211_hw *hw)
1438 {
1439 wl1271_debug(DEBUG_MAC80211, "mac80211 stop");
1440 }
1441
1442 static int wl1271_op_add_interface(struct ieee80211_hw *hw,
1443 struct ieee80211_vif *vif)
1444 {
1445 struct wl1271 *wl = hw->priv;
1446 struct wiphy *wiphy = hw->wiphy;
1447 int retries = WL1271_BOOT_RETRIES;
1448 int ret = 0;
1449 bool booted = false;
1450
1451 wl1271_debug(DEBUG_MAC80211, "mac80211 add interface type %d mac %pM",
1452 vif->type, vif->addr);
1453
1454 mutex_lock(&wl->mutex);
1455 if (wl->vif) {
1456 wl1271_debug(DEBUG_MAC80211,
1457 "multiple vifs are not supported yet");
1458 ret = -EBUSY;
1459 goto out;
1460 }
1461
1462 /*
1463 * in some very corner case HW recovery scenarios its possible to
1464 * get here before __wl1271_op_remove_interface is complete, so
1465 * opt out if that is the case.
1466 */
1467 if (test_bit(WL1271_FLAG_IF_INITIALIZED, &wl->flags)) {
1468 ret = -EBUSY;
1469 goto out;
1470 }
1471
1472 switch (vif->type) {
1473 case NL80211_IFTYPE_STATION:
1474 wl->bss_type = BSS_TYPE_STA_BSS;
1475 wl->set_bss_type = BSS_TYPE_STA_BSS;
1476 break;
1477 case NL80211_IFTYPE_ADHOC:
1478 wl->bss_type = BSS_TYPE_IBSS;
1479 wl->set_bss_type = BSS_TYPE_STA_BSS;
1480 break;
1481 case NL80211_IFTYPE_AP:
1482 wl->bss_type = BSS_TYPE_AP_BSS;
1483 break;
1484 default:
1485 ret = -EOPNOTSUPP;
1486 goto out;
1487 }
1488
1489 memcpy(wl->mac_addr, vif->addr, ETH_ALEN);
1490
1491 if (wl->state != WL1271_STATE_OFF) {
1492 wl1271_error("cannot start because not in off state: %d",
1493 wl->state);
1494 ret = -EBUSY;
1495 goto out;
1496 }
1497
1498 while (retries) {
1499 retries--;
1500 ret = wl1271_chip_wakeup(wl);
1501 if (ret < 0)
1502 goto power_off;
1503
1504 ret = wl1271_boot(wl);
1505 if (ret < 0)
1506 goto power_off;
1507
1508 ret = wl1271_hw_init(wl);
1509 if (ret < 0)
1510 goto irq_disable;
1511
1512 booted = true;
1513 break;
1514
1515 irq_disable:
1516 mutex_unlock(&wl->mutex);
1517 /* Unlocking the mutex in the middle of handling is
1518 inherently unsafe. In this case we deem it safe to do,
1519 because we need to let any possibly pending IRQ out of
1520 the system (and while we are WL1271_STATE_OFF the IRQ
1521 work function will not do anything.) Also, any other
1522 possible concurrent operations will fail due to the
1523 current state, hence the wl1271 struct should be safe. */
1524 wl1271_disable_interrupts(wl);
1525 wl1271_flush_deferred_work(wl);
1526 cancel_work_sync(&wl->netstack_work);
1527 mutex_lock(&wl->mutex);
1528 power_off:
1529 wl1271_power_off(wl);
1530 }
1531
1532 if (!booted) {
1533 wl1271_error("firmware boot failed despite %d retries",
1534 WL1271_BOOT_RETRIES);
1535 goto out;
1536 }
1537
1538 wl->vif = vif;
1539 wl->state = WL1271_STATE_ON;
1540 set_bit(WL1271_FLAG_IF_INITIALIZED, &wl->flags);
1541 wl1271_info("firmware booted (%s)", wl->chip.fw_ver_str);
1542
1543 /* update hw/fw version info in wiphy struct */
1544 wiphy->hw_version = wl->chip.id;
1545 strncpy(wiphy->fw_version, wl->chip.fw_ver_str,
1546 sizeof(wiphy->fw_version));
1547
1548 /* Check if any quirks are needed with older fw versions */
1549 wl->quirks |= wl1271_get_fw_ver_quirks(wl);
1550
1551 /*
1552 * Now we know if 11a is supported (info from the NVS), so disable
1553 * 11a channels if not supported
1554 */
1555 if (!wl->enable_11a)
1556 wiphy->bands[IEEE80211_BAND_5GHZ]->n_channels = 0;
1557
1558 wl1271_debug(DEBUG_MAC80211, "11a is %ssupported",
1559 wl->enable_11a ? "" : "not ");
1560
1561 out:
1562 mutex_unlock(&wl->mutex);
1563
1564 mutex_lock(&wl_list_mutex);
1565 if (!ret)
1566 list_add(&wl->list, &wl_list);
1567 mutex_unlock(&wl_list_mutex);
1568
1569 return ret;
1570 }
1571
1572 static void __wl1271_op_remove_interface(struct wl1271 *wl,
1573 bool reset_tx_queues)
1574 {
1575 int i;
1576
1577 wl1271_debug(DEBUG_MAC80211, "mac80211 remove interface");
1578
1579 /* because of hardware recovery, we may get here twice */
1580 if (wl->state != WL1271_STATE_ON)
1581 return;
1582
1583 wl1271_info("down");
1584
1585 mutex_lock(&wl_list_mutex);
1586 list_del(&wl->list);
1587 mutex_unlock(&wl_list_mutex);
1588
1589 /* enable dyn ps just in case (if left on due to fw crash etc) */
1590 if (wl->bss_type == BSS_TYPE_STA_BSS)
1591 ieee80211_enable_dyn_ps(wl->vif);
1592
1593 if (wl->scan.state != WL1271_SCAN_STATE_IDLE) {
1594 wl->scan.state = WL1271_SCAN_STATE_IDLE;
1595 memset(wl->scan.scanned_ch, 0, sizeof(wl->scan.scanned_ch));
1596 wl->scan.req = NULL;
1597 ieee80211_scan_completed(wl->hw, true);
1598 }
1599
1600 /*
1601 * this must be before the cancel_work calls below, so that the work
1602 * functions don't perform further work.
1603 */
1604 wl->state = WL1271_STATE_OFF;
1605
1606 mutex_unlock(&wl->mutex);
1607
1608 wl1271_disable_interrupts(wl);
1609 wl1271_flush_deferred_work(wl);
1610 cancel_delayed_work_sync(&wl->scan_complete_work);
1611 cancel_work_sync(&wl->netstack_work);
1612 cancel_work_sync(&wl->tx_work);
1613 cancel_delayed_work_sync(&wl->pspoll_work);
1614 cancel_delayed_work_sync(&wl->elp_work);
1615
1616 mutex_lock(&wl->mutex);
1617
1618 /* let's notify MAC80211 about the remaining pending TX frames */
1619 wl1271_tx_reset(wl, reset_tx_queues);
1620 wl1271_power_off(wl);
1621
1622 memset(wl->bssid, 0, ETH_ALEN);
1623 memset(wl->ssid, 0, IW_ESSID_MAX_SIZE + 1);
1624 wl->ssid_len = 0;
1625 wl->bss_type = MAX_BSS_TYPE;
1626 wl->set_bss_type = MAX_BSS_TYPE;
1627 wl->band = IEEE80211_BAND_2GHZ;
1628
1629 wl->rx_counter = 0;
1630 wl->psm_entry_retry = 0;
1631 wl->power_level = WL1271_DEFAULT_POWER_LEVEL;
1632 wl->tx_blocks_available = 0;
1633 wl->tx_allocated_blocks = 0;
1634 wl->tx_results_count = 0;
1635 wl->tx_packets_count = 0;
1636 wl->tx_security_last_seq = 0;
1637 wl->tx_security_seq = 0;
1638 wl->time_offset = 0;
1639 wl->session_counter = 0;
1640 wl->rate_set = CONF_TX_RATE_MASK_BASIC;
1641 wl->vif = NULL;
1642 wl->filters = 0;
1643 wl1271_free_ap_keys(wl);
1644 memset(wl->ap_hlid_map, 0, sizeof(wl->ap_hlid_map));
1645 wl->ap_fw_ps_map = 0;
1646 wl->ap_ps_map = 0;
1647 wl->sched_scanning = false;
1648
1649 /*
1650 * this is performed after the cancel_work calls and the associated
1651 * mutex_lock, so that wl1271_op_add_interface does not accidentally
1652 * get executed before all these vars have been reset.
1653 */
1654 wl->flags = 0;
1655
1656 for (i = 0; i < NUM_TX_QUEUES; i++)
1657 wl->tx_blocks_freed[i] = 0;
1658
1659 wl1271_debugfs_reset(wl);
1660
1661 kfree(wl->fw_status);
1662 wl->fw_status = NULL;
1663 kfree(wl->tx_res_if);
1664 wl->tx_res_if = NULL;
1665 kfree(wl->target_mem_map);
1666 wl->target_mem_map = NULL;
1667 }
1668
1669 static void wl1271_op_remove_interface(struct ieee80211_hw *hw,
1670 struct ieee80211_vif *vif)
1671 {
1672 struct wl1271 *wl = hw->priv;
1673
1674 mutex_lock(&wl->mutex);
1675 /*
1676 * wl->vif can be null here if someone shuts down the interface
1677 * just when hardware recovery has been started.
1678 */
1679 if (wl->vif) {
1680 WARN_ON(wl->vif != vif);
1681 __wl1271_op_remove_interface(wl, true);
1682 }
1683
1684 mutex_unlock(&wl->mutex);
1685 cancel_work_sync(&wl->recovery_work);
1686 }
1687
1688 void wl1271_configure_filters(struct wl1271 *wl, unsigned int filters)
1689 {
1690 wl1271_set_default_filters(wl);
1691
1692 /* combine requested filters with current filter config */
1693 filters = wl->filters | filters;
1694
1695 wl1271_debug(DEBUG_FILTERS, "RX filters set: ");
1696
1697 if (filters & FIF_PROMISC_IN_BSS) {
1698 wl1271_debug(DEBUG_FILTERS, " - FIF_PROMISC_IN_BSS");
1699 wl->rx_config &= ~CFG_UNI_FILTER_EN;
1700 wl->rx_config |= CFG_BSSID_FILTER_EN;
1701 }
1702 if (filters & FIF_BCN_PRBRESP_PROMISC) {
1703 wl1271_debug(DEBUG_FILTERS, " - FIF_BCN_PRBRESP_PROMISC");
1704 wl->rx_config &= ~CFG_BSSID_FILTER_EN;
1705 wl->rx_config &= ~CFG_SSID_FILTER_EN;
1706 }
1707 if (filters & FIF_OTHER_BSS) {
1708 wl1271_debug(DEBUG_FILTERS, " - FIF_OTHER_BSS");
1709 wl->rx_config &= ~CFG_BSSID_FILTER_EN;
1710 }
1711 if (filters & FIF_CONTROL) {
1712 wl1271_debug(DEBUG_FILTERS, " - FIF_CONTROL");
1713 wl->rx_filter |= CFG_RX_CTL_EN;
1714 }
1715 if (filters & FIF_FCSFAIL) {
1716 wl1271_debug(DEBUG_FILTERS, " - FIF_FCSFAIL");
1717 wl->rx_filter |= CFG_RX_FCS_ERROR;
1718 }
1719 }
1720
1721 static int wl1271_dummy_join(struct wl1271 *wl)
1722 {
1723 int ret = 0;
1724 /* we need to use a dummy BSSID for now */
1725 static const u8 dummy_bssid[ETH_ALEN] = { 0x0b, 0xad, 0xde,
1726 0xad, 0xbe, 0xef };
1727
1728 memcpy(wl->bssid, dummy_bssid, ETH_ALEN);
1729
1730 /* pass through frames from all BSS */
1731 wl1271_configure_filters(wl, FIF_OTHER_BSS);
1732
1733 ret = wl1271_cmd_join(wl, wl->set_bss_type);
1734 if (ret < 0)
1735 goto out;
1736
1737 set_bit(WL1271_FLAG_JOINED, &wl->flags);
1738
1739 out:
1740 return ret;
1741 }
1742
1743 static int wl1271_join(struct wl1271 *wl, bool set_assoc)
1744 {
1745 int ret;
1746
1747 /*
1748 * One of the side effects of the JOIN command is that is clears
1749 * WPA/WPA2 keys from the chipset. Performing a JOIN while associated
1750 * to a WPA/WPA2 access point will therefore kill the data-path.
1751 * Currently the only valid scenario for JOIN during association
1752 * is on roaming, in which case we will also be given new keys.
1753 * Keep the below message for now, unless it starts bothering
1754 * users who really like to roam a lot :)
1755 */
1756 if (test_bit(WL1271_FLAG_STA_ASSOCIATED, &wl->flags))
1757 wl1271_info("JOIN while associated.");
1758
1759 if (set_assoc)
1760 set_bit(WL1271_FLAG_STA_ASSOCIATED, &wl->flags);
1761
1762 ret = wl1271_cmd_join(wl, wl->set_bss_type);
1763 if (ret < 0)
1764 goto out;
1765
1766 set_bit(WL1271_FLAG_JOINED, &wl->flags);
1767
1768 if (!test_bit(WL1271_FLAG_STA_ASSOCIATED, &wl->flags))
1769 goto out;
1770
1771 /*
1772 * The join command disable the keep-alive mode, shut down its process,
1773 * and also clear the template config, so we need to reset it all after
1774 * the join. The acx_aid starts the keep-alive process, and the order
1775 * of the commands below is relevant.
1776 */
1777 ret = wl1271_acx_keep_alive_mode(wl, true);
1778 if (ret < 0)
1779 goto out;
1780
1781 ret = wl1271_acx_aid(wl, wl->aid);
1782 if (ret < 0)
1783 goto out;
1784
1785 ret = wl1271_cmd_build_klv_null_data(wl);
1786 if (ret < 0)
1787 goto out;
1788
1789 ret = wl1271_acx_keep_alive_config(wl, CMD_TEMPL_KLV_IDX_NULL_DATA,
1790 ACX_KEEP_ALIVE_TPL_VALID);
1791 if (ret < 0)
1792 goto out;
1793
1794 out:
1795 return ret;
1796 }
1797
1798 static int wl1271_unjoin(struct wl1271 *wl)
1799 {
1800 int ret;
1801
1802 /* to stop listening to a channel, we disconnect */
1803 ret = wl1271_cmd_disconnect(wl);
1804 if (ret < 0)
1805 goto out;
1806
1807 clear_bit(WL1271_FLAG_JOINED, &wl->flags);
1808 memset(wl->bssid, 0, ETH_ALEN);
1809
1810 /* stop filtering packets based on bssid */
1811 wl1271_configure_filters(wl, FIF_OTHER_BSS);
1812
1813 out:
1814 return ret;
1815 }
1816
1817 static void wl1271_set_band_rate(struct wl1271 *wl)
1818 {
1819 if (wl->band == IEEE80211_BAND_2GHZ)
1820 wl->basic_rate_set = wl->conf.tx.basic_rate;
1821 else
1822 wl->basic_rate_set = wl->conf.tx.basic_rate_5;
1823 }
1824
1825 static int wl1271_sta_handle_idle(struct wl1271 *wl, bool idle)
1826 {
1827 int ret;
1828
1829 if (idle) {
1830 if (test_bit(WL1271_FLAG_JOINED, &wl->flags)) {
1831 ret = wl1271_unjoin(wl);
1832 if (ret < 0)
1833 goto out;
1834 }
1835 wl->rate_set = wl1271_tx_min_rate_get(wl);
1836 ret = wl1271_acx_sta_rate_policies(wl);
1837 if (ret < 0)
1838 goto out;
1839 ret = wl1271_acx_keep_alive_config(
1840 wl, CMD_TEMPL_KLV_IDX_NULL_DATA,
1841 ACX_KEEP_ALIVE_TPL_INVALID);
1842 if (ret < 0)
1843 goto out;
1844 set_bit(WL1271_FLAG_IDLE, &wl->flags);
1845 } else {
1846 /* increment the session counter */
1847 wl->session_counter++;
1848 if (wl->session_counter >= SESSION_COUNTER_MAX)
1849 wl->session_counter = 0;
1850
1851 /* The current firmware only supports sched_scan in idle */
1852 if (wl->sched_scanning) {
1853 wl1271_scan_sched_scan_stop(wl);
1854 ieee80211_sched_scan_stopped(wl->hw);
1855 }
1856
1857 ret = wl1271_dummy_join(wl);
1858 if (ret < 0)
1859 goto out;
1860 clear_bit(WL1271_FLAG_IDLE, &wl->flags);
1861 }
1862
1863 out:
1864 return ret;
1865 }
1866
1867 static int wl1271_op_config(struct ieee80211_hw *hw, u32 changed)
1868 {
1869 struct wl1271 *wl = hw->priv;
1870 struct ieee80211_conf *conf = &hw->conf;
1871 int channel, ret = 0;
1872 bool is_ap;
1873
1874 channel = ieee80211_frequency_to_channel(conf->channel->center_freq);
1875
1876 wl1271_debug(DEBUG_MAC80211, "mac80211 config ch %d psm %s power %d %s"
1877 " changed 0x%x",
1878 channel,
1879 conf->flags & IEEE80211_CONF_PS ? "on" : "off",
1880 conf->power_level,
1881 conf->flags & IEEE80211_CONF_IDLE ? "idle" : "in use",
1882 changed);
1883
1884 /*
1885 * mac80211 will go to idle nearly immediately after transmitting some
1886 * frames, such as the deauth. To make sure those frames reach the air,
1887 * wait here until the TX queue is fully flushed.
1888 */
1889 if ((changed & IEEE80211_CONF_CHANGE_IDLE) &&
1890 (conf->flags & IEEE80211_CONF_IDLE))
1891 wl1271_tx_flush(wl);
1892
1893 mutex_lock(&wl->mutex);
1894
1895 if (unlikely(wl->state == WL1271_STATE_OFF)) {
1896 /* we support configuring the channel and band while off */
1897 if ((changed & IEEE80211_CONF_CHANGE_CHANNEL)) {
1898 wl->band = conf->channel->band;
1899 wl->channel = channel;
1900 }
1901
1902 goto out;
1903 }
1904
1905 is_ap = (wl->bss_type == BSS_TYPE_AP_BSS);
1906
1907 ret = wl1271_ps_elp_wakeup(wl);
1908 if (ret < 0)
1909 goto out;
1910
1911 /* if the channel changes while joined, join again */
1912 if (changed & IEEE80211_CONF_CHANGE_CHANNEL &&
1913 ((wl->band != conf->channel->band) ||
1914 (wl->channel != channel))) {
1915 wl->band = conf->channel->band;
1916 wl->channel = channel;
1917
1918 if (!is_ap) {
1919 /*
1920 * FIXME: the mac80211 should really provide a fixed
1921 * rate to use here. for now, just use the smallest
1922 * possible rate for the band as a fixed rate for
1923 * association frames and other control messages.
1924 */
1925 if (!test_bit(WL1271_FLAG_STA_ASSOCIATED, &wl->flags))
1926 wl1271_set_band_rate(wl);
1927
1928 wl->basic_rate = wl1271_tx_min_rate_get(wl);
1929 ret = wl1271_acx_sta_rate_policies(wl);
1930 if (ret < 0)
1931 wl1271_warning("rate policy for channel "
1932 "failed %d", ret);
1933
1934 if (test_bit(WL1271_FLAG_JOINED, &wl->flags)) {
1935 ret = wl1271_join(wl, false);
1936 if (ret < 0)
1937 wl1271_warning("cmd join on channel "
1938 "failed %d", ret);
1939 }
1940 }
1941 }
1942
1943 if (changed & IEEE80211_CONF_CHANGE_IDLE && !is_ap) {
1944 ret = wl1271_sta_handle_idle(wl,
1945 conf->flags & IEEE80211_CONF_IDLE);
1946 if (ret < 0)
1947 wl1271_warning("idle mode change failed %d", ret);
1948 }
1949
1950 /*
1951 * if mac80211 changes the PSM mode, make sure the mode is not
1952 * incorrectly changed after the pspoll failure active window.
1953 */
1954 if (changed & IEEE80211_CONF_CHANGE_PS)
1955 clear_bit(WL1271_FLAG_PSPOLL_FAILURE, &wl->flags);
1956
1957 if (conf->flags & IEEE80211_CONF_PS &&
1958 !test_bit(WL1271_FLAG_PSM_REQUESTED, &wl->flags)) {
1959 set_bit(WL1271_FLAG_PSM_REQUESTED, &wl->flags);
1960
1961 /*
1962 * We enter PSM only if we're already associated.
1963 * If we're not, we'll enter it when joining an SSID,
1964 * through the bss_info_changed() hook.
1965 */
1966 if (test_bit(WL1271_FLAG_STA_ASSOCIATED, &wl->flags)) {
1967 wl1271_debug(DEBUG_PSM, "psm enabled");
1968 ret = wl1271_ps_set_mode(wl, STATION_POWER_SAVE_MODE,
1969 wl->basic_rate, true);
1970 }
1971 } else if (!(conf->flags & IEEE80211_CONF_PS) &&
1972 test_bit(WL1271_FLAG_PSM_REQUESTED, &wl->flags)) {
1973 wl1271_debug(DEBUG_PSM, "psm disabled");
1974
1975 clear_bit(WL1271_FLAG_PSM_REQUESTED, &wl->flags);
1976
1977 if (test_bit(WL1271_FLAG_PSM, &wl->flags))
1978 ret = wl1271_ps_set_mode(wl, STATION_ACTIVE_MODE,
1979 wl->basic_rate, true);
1980 }
1981
1982 if (conf->power_level != wl->power_level) {
1983 ret = wl1271_acx_tx_power(wl, conf->power_level);
1984 if (ret < 0)
1985 goto out_sleep;
1986
1987 wl->power_level = conf->power_level;
1988 }
1989
1990 out_sleep:
1991 wl1271_ps_elp_sleep(wl);
1992
1993 out:
1994 mutex_unlock(&wl->mutex);
1995
1996 return ret;
1997 }
1998
1999 struct wl1271_filter_params {
2000 bool enabled;
2001 int mc_list_length;
2002 u8 mc_list[ACX_MC_ADDRESS_GROUP_MAX][ETH_ALEN];
2003 };
2004
2005 static u64 wl1271_op_prepare_multicast(struct ieee80211_hw *hw,
2006 struct netdev_hw_addr_list *mc_list)
2007 {
2008 struct wl1271_filter_params *fp;
2009 struct netdev_hw_addr *ha;
2010 struct wl1271 *wl = hw->priv;
2011
2012 if (unlikely(wl->state == WL1271_STATE_OFF))
2013 return 0;
2014
2015 fp = kzalloc(sizeof(*fp), GFP_ATOMIC);
2016 if (!fp) {
2017 wl1271_error("Out of memory setting filters.");
2018 return 0;
2019 }
2020
2021 /* update multicast filtering parameters */
2022 fp->mc_list_length = 0;
2023 if (netdev_hw_addr_list_count(mc_list) > ACX_MC_ADDRESS_GROUP_MAX) {
2024 fp->enabled = false;
2025 } else {
2026 fp->enabled = true;
2027 netdev_hw_addr_list_for_each(ha, mc_list) {
2028 memcpy(fp->mc_list[fp->mc_list_length],
2029 ha->addr, ETH_ALEN);
2030 fp->mc_list_length++;
2031 }
2032 }
2033
2034 return (u64)(unsigned long)fp;
2035 }
2036
2037 #define WL1271_SUPPORTED_FILTERS (FIF_PROMISC_IN_BSS | \
2038 FIF_ALLMULTI | \
2039 FIF_FCSFAIL | \
2040 FIF_BCN_PRBRESP_PROMISC | \
2041 FIF_CONTROL | \
2042 FIF_OTHER_BSS)
2043
2044 static void wl1271_op_configure_filter(struct ieee80211_hw *hw,
2045 unsigned int changed,
2046 unsigned int *total, u64 multicast)
2047 {
2048 struct wl1271_filter_params *fp = (void *)(unsigned long)multicast;
2049 struct wl1271 *wl = hw->priv;
2050 int ret;
2051
2052 wl1271_debug(DEBUG_MAC80211, "mac80211 configure filter changed %x"
2053 " total %x", changed, *total);
2054
2055 mutex_lock(&wl->mutex);
2056
2057 *total &= WL1271_SUPPORTED_FILTERS;
2058 changed &= WL1271_SUPPORTED_FILTERS;
2059
2060 if (unlikely(wl->state == WL1271_STATE_OFF))
2061 goto out;
2062
2063 ret = wl1271_ps_elp_wakeup(wl);
2064 if (ret < 0)
2065 goto out;
2066
2067 if (wl->bss_type != BSS_TYPE_AP_BSS) {
2068 if (*total & FIF_ALLMULTI)
2069 ret = wl1271_acx_group_address_tbl(wl, false, NULL, 0);
2070 else if (fp)
2071 ret = wl1271_acx_group_address_tbl(wl, fp->enabled,
2072 fp->mc_list,
2073 fp->mc_list_length);
2074 if (ret < 0)
2075 goto out_sleep;
2076 }
2077
2078 /* determine, whether supported filter values have changed */
2079 if (changed == 0)
2080 goto out_sleep;
2081
2082 /* configure filters */
2083 wl->filters = *total;
2084 wl1271_configure_filters(wl, 0);
2085
2086 /* apply configured filters */
2087 ret = wl1271_acx_rx_config(wl, wl->rx_config, wl->rx_filter);
2088 if (ret < 0)
2089 goto out_sleep;
2090
2091 out_sleep:
2092 wl1271_ps_elp_sleep(wl);
2093
2094 out:
2095 mutex_unlock(&wl->mutex);
2096 kfree(fp);
2097 }
2098
2099 static int wl1271_record_ap_key(struct wl1271 *wl, u8 id, u8 key_type,
2100 u8 key_size, const u8 *key, u8 hlid, u32 tx_seq_32,
2101 u16 tx_seq_16)
2102 {
2103 struct wl1271_ap_key *ap_key;
2104 int i;
2105
2106 wl1271_debug(DEBUG_CRYPT, "record ap key id %d", (int)id);
2107
2108 if (key_size > MAX_KEY_SIZE)
2109 return -EINVAL;
2110
2111 /*
2112 * Find next free entry in ap_keys. Also check we are not replacing
2113 * an existing key.
2114 */
2115 for (i = 0; i < MAX_NUM_KEYS; i++) {
2116 if (wl->recorded_ap_keys[i] == NULL)
2117 break;
2118
2119 if (wl->recorded_ap_keys[i]->id == id) {
2120 wl1271_warning("trying to record key replacement");
2121 return -EINVAL;
2122 }
2123 }
2124
2125 if (i == MAX_NUM_KEYS)
2126 return -EBUSY;
2127
2128 ap_key = kzalloc(sizeof(*ap_key), GFP_KERNEL);
2129 if (!ap_key)
2130 return -ENOMEM;
2131
2132 ap_key->id = id;
2133 ap_key->key_type = key_type;
2134 ap_key->key_size = key_size;
2135 memcpy(ap_key->key, key, key_size);
2136 ap_key->hlid = hlid;
2137 ap_key->tx_seq_32 = tx_seq_32;
2138 ap_key->tx_seq_16 = tx_seq_16;
2139
2140 wl->recorded_ap_keys[i] = ap_key;
2141 return 0;
2142 }
2143
2144 static void wl1271_free_ap_keys(struct wl1271 *wl)
2145 {
2146 int i;
2147
2148 for (i = 0; i < MAX_NUM_KEYS; i++) {
2149 kfree(wl->recorded_ap_keys[i]);
2150 wl->recorded_ap_keys[i] = NULL;
2151 }
2152 }
2153
2154 static int wl1271_ap_init_hwenc(struct wl1271 *wl)
2155 {
2156 int i, ret = 0;
2157 struct wl1271_ap_key *key;
2158 bool wep_key_added = false;
2159
2160 for (i = 0; i < MAX_NUM_KEYS; i++) {
2161 if (wl->recorded_ap_keys[i] == NULL)
2162 break;
2163
2164 key = wl->recorded_ap_keys[i];
2165 ret = wl1271_cmd_set_ap_key(wl, KEY_ADD_OR_REPLACE,
2166 key->id, key->key_type,
2167 key->key_size, key->key,
2168 key->hlid, key->tx_seq_32,
2169 key->tx_seq_16);
2170 if (ret < 0)
2171 goto out;
2172
2173 if (key->key_type == KEY_WEP)
2174 wep_key_added = true;
2175 }
2176
2177 if (wep_key_added) {
2178 ret = wl1271_cmd_set_ap_default_wep_key(wl, wl->default_key);
2179 if (ret < 0)
2180 goto out;
2181 }
2182
2183 out:
2184 wl1271_free_ap_keys(wl);
2185 return ret;
2186 }
2187
2188 static int wl1271_set_key(struct wl1271 *wl, u16 action, u8 id, u8 key_type,
2189 u8 key_size, const u8 *key, u32 tx_seq_32,
2190 u16 tx_seq_16, struct ieee80211_sta *sta)
2191 {
2192 int ret;
2193 bool is_ap = (wl->bss_type == BSS_TYPE_AP_BSS);
2194
2195 if (is_ap) {
2196 struct wl1271_station *wl_sta;
2197 u8 hlid;
2198
2199 if (sta) {
2200 wl_sta = (struct wl1271_station *)sta->drv_priv;
2201 hlid = wl_sta->hlid;
2202 } else {
2203 hlid = WL1271_AP_BROADCAST_HLID;
2204 }
2205
2206 if (!test_bit(WL1271_FLAG_AP_STARTED, &wl->flags)) {
2207 /*
2208 * We do not support removing keys after AP shutdown.
2209 * Pretend we do to make mac80211 happy.
2210 */
2211 if (action != KEY_ADD_OR_REPLACE)
2212 return 0;
2213
2214 ret = wl1271_record_ap_key(wl, id,
2215 key_type, key_size,
2216 key, hlid, tx_seq_32,
2217 tx_seq_16);
2218 } else {
2219 ret = wl1271_cmd_set_ap_key(wl, action,
2220 id, key_type, key_size,
2221 key, hlid, tx_seq_32,
2222 tx_seq_16);
2223 }
2224
2225 if (ret < 0)
2226 return ret;
2227 } else {
2228 const u8 *addr;
2229 static const u8 bcast_addr[ETH_ALEN] = {
2230 0xff, 0xff, 0xff, 0xff, 0xff, 0xff
2231 };
2232
2233 addr = sta ? sta->addr : bcast_addr;
2234
2235 if (is_zero_ether_addr(addr)) {
2236 /* We dont support TX only encryption */
2237 return -EOPNOTSUPP;
2238 }
2239
2240 /* The wl1271 does not allow to remove unicast keys - they
2241 will be cleared automatically on next CMD_JOIN. Ignore the
2242 request silently, as we dont want the mac80211 to emit
2243 an error message. */
2244 if (action == KEY_REMOVE && !is_broadcast_ether_addr(addr))
2245 return 0;
2246
2247 ret = wl1271_cmd_set_sta_key(wl, action,
2248 id, key_type, key_size,
2249 key, addr, tx_seq_32,
2250 tx_seq_16);
2251 if (ret < 0)
2252 return ret;
2253
2254 /* the default WEP key needs to be configured at least once */
2255 if (key_type == KEY_WEP) {
2256 ret = wl1271_cmd_set_sta_default_wep_key(wl,
2257 wl->default_key);
2258 if (ret < 0)
2259 return ret;
2260 }
2261 }
2262
2263 return 0;
2264 }
2265
2266 static int wl1271_op_set_key(struct ieee80211_hw *hw, enum set_key_cmd cmd,
2267 struct ieee80211_vif *vif,
2268 struct ieee80211_sta *sta,
2269 struct ieee80211_key_conf *key_conf)
2270 {
2271 struct wl1271 *wl = hw->priv;
2272 int ret;
2273 u32 tx_seq_32 = 0;
2274 u16 tx_seq_16 = 0;
2275 u8 key_type;
2276
2277 wl1271_debug(DEBUG_MAC80211, "mac80211 set key");
2278
2279 wl1271_debug(DEBUG_CRYPT, "CMD: 0x%x sta: %p", cmd, sta);
2280 wl1271_debug(DEBUG_CRYPT, "Key: algo:0x%x, id:%d, len:%d flags 0x%x",
2281 key_conf->cipher, key_conf->keyidx,
2282 key_conf->keylen, key_conf->flags);
2283 wl1271_dump(DEBUG_CRYPT, "KEY: ", key_conf->key, key_conf->keylen);
2284
2285 mutex_lock(&wl->mutex);
2286
2287 if (unlikely(wl->state == WL1271_STATE_OFF)) {
2288 ret = -EAGAIN;
2289 goto out_unlock;
2290 }
2291
2292 ret = wl1271_ps_elp_wakeup(wl);
2293 if (ret < 0)
2294 goto out_unlock;
2295
2296 switch (key_conf->cipher) {
2297 case WLAN_CIPHER_SUITE_WEP40:
2298 case WLAN_CIPHER_SUITE_WEP104:
2299 key_type = KEY_WEP;
2300
2301 key_conf->hw_key_idx = key_conf->keyidx;
2302 break;
2303 case WLAN_CIPHER_SUITE_TKIP:
2304 key_type = KEY_TKIP;
2305
2306 key_conf->hw_key_idx = key_conf->keyidx;
2307 tx_seq_32 = WL1271_TX_SECURITY_HI32(wl->tx_security_seq);
2308 tx_seq_16 = WL1271_TX_SECURITY_LO16(wl->tx_security_seq);
2309 break;
2310 case WLAN_CIPHER_SUITE_CCMP:
2311 key_type = KEY_AES;
2312
2313 key_conf->flags |= IEEE80211_KEY_FLAG_GENERATE_IV;
2314 tx_seq_32 = WL1271_TX_SECURITY_HI32(wl->tx_security_seq);
2315 tx_seq_16 = WL1271_TX_SECURITY_LO16(wl->tx_security_seq);
2316 break;
2317 case WL1271_CIPHER_SUITE_GEM:
2318 key_type = KEY_GEM;
2319 tx_seq_32 = WL1271_TX_SECURITY_HI32(wl->tx_security_seq);
2320 tx_seq_16 = WL1271_TX_SECURITY_LO16(wl->tx_security_seq);
2321 break;
2322 default:
2323 wl1271_error("Unknown key algo 0x%x", key_conf->cipher);
2324
2325 ret = -EOPNOTSUPP;
2326 goto out_sleep;
2327 }
2328
2329 switch (cmd) {
2330 case SET_KEY:
2331 ret = wl1271_set_key(wl, KEY_ADD_OR_REPLACE,
2332 key_conf->keyidx, key_type,
2333 key_conf->keylen, key_conf->key,
2334 tx_seq_32, tx_seq_16, sta);
2335 if (ret < 0) {
2336 wl1271_error("Could not add or replace key");
2337 goto out_sleep;
2338 }
2339 break;
2340
2341 case DISABLE_KEY:
2342 ret = wl1271_set_key(wl, KEY_REMOVE,
2343 key_conf->keyidx, key_type,
2344 key_conf->keylen, key_conf->key,
2345 0, 0, sta);
2346 if (ret < 0) {
2347 wl1271_error("Could not remove key");
2348 goto out_sleep;
2349 }
2350 break;
2351
2352 default:
2353 wl1271_error("Unsupported key cmd 0x%x", cmd);
2354 ret = -EOPNOTSUPP;
2355 break;
2356 }
2357
2358 out_sleep:
2359 wl1271_ps_elp_sleep(wl);
2360
2361 out_unlock:
2362 mutex_unlock(&wl->mutex);
2363
2364 return ret;
2365 }
2366
2367 static int wl1271_op_hw_scan(struct ieee80211_hw *hw,
2368 struct ieee80211_vif *vif,
2369 struct cfg80211_scan_request *req)
2370 {
2371 struct wl1271 *wl = hw->priv;
2372 int ret;
2373 u8 *ssid = NULL;
2374 size_t len = 0;
2375
2376 wl1271_debug(DEBUG_MAC80211, "mac80211 hw scan");
2377
2378 if (req->n_ssids) {
2379 ssid = req->ssids[0].ssid;
2380 len = req->ssids[0].ssid_len;
2381 }
2382
2383 mutex_lock(&wl->mutex);
2384
2385 if (wl->state == WL1271_STATE_OFF) {
2386 /*
2387 * We cannot return -EBUSY here because cfg80211 will expect
2388 * a call to ieee80211_scan_completed if we do - in this case
2389 * there won't be any call.
2390 */
2391 ret = -EAGAIN;
2392 goto out;
2393 }
2394
2395 ret = wl1271_ps_elp_wakeup(wl);
2396 if (ret < 0)
2397 goto out;
2398
2399 ret = wl1271_scan(hw->priv, ssid, len, req);
2400
2401 wl1271_ps_elp_sleep(wl);
2402
2403 out:
2404 mutex_unlock(&wl->mutex);
2405
2406 return ret;
2407 }
2408
2409 static int wl1271_op_sched_scan_start(struct ieee80211_hw *hw,
2410 struct ieee80211_vif *vif,
2411 struct cfg80211_sched_scan_request *req,
2412 struct ieee80211_sched_scan_ies *ies)
2413 {
2414 struct wl1271 *wl = hw->priv;
2415 int ret;
2416
2417 wl1271_debug(DEBUG_MAC80211, "wl1271_op_sched_scan_start");
2418
2419 mutex_lock(&wl->mutex);
2420
2421 ret = wl1271_ps_elp_wakeup(wl);
2422 if (ret < 0)
2423 goto out;
2424
2425 ret = wl1271_scan_sched_scan_config(wl, req, ies);
2426 if (ret < 0)
2427 goto out_sleep;
2428
2429 ret = wl1271_scan_sched_scan_start(wl);
2430 if (ret < 0)
2431 goto out_sleep;
2432
2433 wl->sched_scanning = true;
2434
2435 out_sleep:
2436 wl1271_ps_elp_sleep(wl);
2437 out:
2438 mutex_unlock(&wl->mutex);
2439 return ret;
2440 }
2441
2442 static void wl1271_op_sched_scan_stop(struct ieee80211_hw *hw,
2443 struct ieee80211_vif *vif)
2444 {
2445 struct wl1271 *wl = hw->priv;
2446 int ret;
2447
2448 wl1271_debug(DEBUG_MAC80211, "wl1271_op_sched_scan_stop");
2449
2450 mutex_lock(&wl->mutex);
2451
2452 ret = wl1271_ps_elp_wakeup(wl);
2453 if (ret < 0)
2454 goto out;
2455
2456 wl1271_scan_sched_scan_stop(wl);
2457
2458 wl1271_ps_elp_sleep(wl);
2459 out:
2460 mutex_unlock(&wl->mutex);
2461 }
2462
2463 static int wl1271_op_set_frag_threshold(struct ieee80211_hw *hw, u32 value)
2464 {
2465 struct wl1271 *wl = hw->priv;
2466 int ret = 0;
2467
2468 mutex_lock(&wl->mutex);
2469
2470 if (unlikely(wl->state == WL1271_STATE_OFF)) {
2471 ret = -EAGAIN;
2472 goto out;
2473 }
2474
2475 ret = wl1271_ps_elp_wakeup(wl);
2476 if (ret < 0)
2477 goto out;
2478
2479 ret = wl1271_acx_frag_threshold(wl, value);
2480 if (ret < 0)
2481 wl1271_warning("wl1271_op_set_frag_threshold failed: %d", ret);
2482
2483 wl1271_ps_elp_sleep(wl);
2484
2485 out:
2486 mutex_unlock(&wl->mutex);
2487
2488 return ret;
2489 }
2490
2491 static int wl1271_op_set_rts_threshold(struct ieee80211_hw *hw, u32 value)
2492 {
2493 struct wl1271 *wl = hw->priv;
2494 int ret = 0;
2495
2496 mutex_lock(&wl->mutex);
2497
2498 if (unlikely(wl->state == WL1271_STATE_OFF)) {
2499 ret = -EAGAIN;
2500 goto out;
2501 }
2502
2503 ret = wl1271_ps_elp_wakeup(wl);
2504 if (ret < 0)
2505 goto out;
2506
2507 ret = wl1271_acx_rts_threshold(wl, value);
2508 if (ret < 0)
2509 wl1271_warning("wl1271_op_set_rts_threshold failed: %d", ret);
2510
2511 wl1271_ps_elp_sleep(wl);
2512
2513 out:
2514 mutex_unlock(&wl->mutex);
2515
2516 return ret;
2517 }
2518
2519 static int wl1271_ssid_set(struct wl1271 *wl, struct sk_buff *skb,
2520 int offset)
2521 {
2522 u8 ssid_len;
2523 const u8 *ptr = cfg80211_find_ie(WLAN_EID_SSID, skb->data + offset,
2524 skb->len - offset);
2525
2526 if (!ptr) {
2527 wl1271_error("No SSID in IEs!");
2528 return -ENOENT;
2529 }
2530
2531 ssid_len = ptr[1];
2532 if (ssid_len > IEEE80211_MAX_SSID_LEN) {
2533 wl1271_error("SSID is too long!");
2534 return -EINVAL;
2535 }
2536
2537 wl->ssid_len = ssid_len;
2538 memcpy(wl->ssid, ptr+2, ssid_len);
2539 return 0;
2540 }
2541
2542 static int wl1271_bss_erp_info_changed(struct wl1271 *wl,
2543 struct ieee80211_bss_conf *bss_conf,
2544 u32 changed)
2545 {
2546 int ret = 0;
2547
2548 if (changed & BSS_CHANGED_ERP_SLOT) {
2549 if (bss_conf->use_short_slot)
2550 ret = wl1271_acx_slot(wl, SLOT_TIME_SHORT);
2551 else
2552 ret = wl1271_acx_slot(wl, SLOT_TIME_LONG);
2553 if (ret < 0) {
2554 wl1271_warning("Set slot time failed %d", ret);
2555 goto out;
2556 }
2557 }
2558
2559 if (changed & BSS_CHANGED_ERP_PREAMBLE) {
2560 if (bss_conf->use_short_preamble)
2561 wl1271_acx_set_preamble(wl, ACX_PREAMBLE_SHORT);
2562 else
2563 wl1271_acx_set_preamble(wl, ACX_PREAMBLE_LONG);
2564 }
2565
2566 if (changed & BSS_CHANGED_ERP_CTS_PROT) {
2567 if (bss_conf->use_cts_prot)
2568 ret = wl1271_acx_cts_protect(wl, CTSPROTECT_ENABLE);
2569 else
2570 ret = wl1271_acx_cts_protect(wl, CTSPROTECT_DISABLE);
2571 if (ret < 0) {
2572 wl1271_warning("Set ctsprotect failed %d", ret);
2573 goto out;
2574 }
2575 }
2576
2577 out:
2578 return ret;
2579 }
2580
2581 static int wl1271_bss_beacon_info_changed(struct wl1271 *wl,
2582 struct ieee80211_vif *vif,
2583 struct ieee80211_bss_conf *bss_conf,
2584 u32 changed)
2585 {
2586 bool is_ap = (wl->bss_type == BSS_TYPE_AP_BSS);
2587 int ret = 0;
2588
2589 if ((changed & BSS_CHANGED_BEACON_INT)) {
2590 wl1271_debug(DEBUG_MASTER, "beacon interval updated: %d",
2591 bss_conf->beacon_int);
2592
2593 wl->beacon_int = bss_conf->beacon_int;
2594 }
2595
2596 if ((changed & BSS_CHANGED_BEACON)) {
2597 struct ieee80211_hdr *hdr;
2598 int ieoffset = offsetof(struct ieee80211_mgmt,
2599 u.beacon.variable);
2600 struct sk_buff *beacon = ieee80211_beacon_get(wl->hw, vif);
2601 u16 tmpl_id;
2602
2603 if (!beacon)
2604 goto out;
2605
2606 wl1271_debug(DEBUG_MASTER, "beacon updated");
2607
2608 ret = wl1271_ssid_set(wl, beacon, ieoffset);
2609 if (ret < 0) {
2610 dev_kfree_skb(beacon);
2611 goto out;
2612 }
2613 tmpl_id = is_ap ? CMD_TEMPL_AP_BEACON :
2614 CMD_TEMPL_BEACON;
2615 ret = wl1271_cmd_template_set(wl, tmpl_id,
2616 beacon->data,
2617 beacon->len, 0,
2618 wl1271_tx_min_rate_get(wl));
2619 if (ret < 0) {
2620 dev_kfree_skb(beacon);
2621 goto out;
2622 }
2623
2624 hdr = (struct ieee80211_hdr *) beacon->data;
2625 hdr->frame_control = cpu_to_le16(IEEE80211_FTYPE_MGMT |
2626 IEEE80211_STYPE_PROBE_RESP);
2627
2628 tmpl_id = is_ap ? CMD_TEMPL_AP_PROBE_RESPONSE :
2629 CMD_TEMPL_PROBE_RESPONSE;
2630 ret = wl1271_cmd_template_set(wl,
2631 tmpl_id,
2632 beacon->data,
2633 beacon->len, 0,
2634 wl1271_tx_min_rate_get(wl));
2635 dev_kfree_skb(beacon);
2636 if (ret < 0)
2637 goto out;
2638 }
2639
2640 out:
2641 return ret;
2642 }
2643
2644 /* AP mode changes */
2645 static void wl1271_bss_info_changed_ap(struct wl1271 *wl,
2646 struct ieee80211_vif *vif,
2647 struct ieee80211_bss_conf *bss_conf,
2648 u32 changed)
2649 {
2650 int ret = 0;
2651
2652 if ((changed & BSS_CHANGED_BASIC_RATES)) {
2653 u32 rates = bss_conf->basic_rates;
2654
2655 wl->basic_rate_set = wl1271_tx_enabled_rates_get(wl, rates);
2656 wl->basic_rate = wl1271_tx_min_rate_get(wl);
2657
2658 ret = wl1271_init_ap_rates(wl);
2659 if (ret < 0) {
2660 wl1271_error("AP rate policy change failed %d", ret);
2661 goto out;
2662 }
2663
2664 ret = wl1271_ap_init_templates(wl);
2665 if (ret < 0)
2666 goto out;
2667 }
2668
2669 ret = wl1271_bss_beacon_info_changed(wl, vif, bss_conf, changed);
2670 if (ret < 0)
2671 goto out;
2672
2673 if ((changed & BSS_CHANGED_BEACON_ENABLED)) {
2674 if (bss_conf->enable_beacon) {
2675 if (!test_bit(WL1271_FLAG_AP_STARTED, &wl->flags)) {
2676 ret = wl1271_cmd_start_bss(wl);
2677 if (ret < 0)
2678 goto out;
2679
2680 set_bit(WL1271_FLAG_AP_STARTED, &wl->flags);
2681 wl1271_debug(DEBUG_AP, "started AP");
2682
2683 ret = wl1271_ap_init_hwenc(wl);
2684 if (ret < 0)
2685 goto out;
2686 }
2687 } else {
2688 if (test_bit(WL1271_FLAG_AP_STARTED, &wl->flags)) {
2689 ret = wl1271_cmd_stop_bss(wl);
2690 if (ret < 0)
2691 goto out;
2692
2693 clear_bit(WL1271_FLAG_AP_STARTED, &wl->flags);
2694 wl1271_debug(DEBUG_AP, "stopped AP");
2695 }
2696 }
2697 }
2698
2699 if (changed & BSS_CHANGED_IBSS) {
2700 wl1271_debug(DEBUG_ADHOC, "ibss_joined: %d",
2701 bss_conf->ibss_joined);
2702
2703 if (bss_conf->ibss_joined) {
2704 u32 rates = bss_conf->basic_rates;
2705 wl->basic_rate_set = wl1271_tx_enabled_rates_get(wl,
2706 rates);
2707 wl->basic_rate = wl1271_tx_min_rate_get(wl);
2708
2709 /* by default, use 11b rates */
2710 wl->rate_set = CONF_TX_IBSS_DEFAULT_RATES;
2711 ret = wl1271_acx_sta_rate_policies(wl);
2712 if (ret < 0)
2713 goto out;
2714 }
2715 }
2716
2717 ret = wl1271_bss_erp_info_changed(wl, bss_conf, changed);
2718 if (ret < 0)
2719 goto out;
2720 out:
2721 return;
2722 }
2723
2724 /* STA/IBSS mode changes */
2725 static void wl1271_bss_info_changed_sta(struct wl1271 *wl,
2726 struct ieee80211_vif *vif,
2727 struct ieee80211_bss_conf *bss_conf,
2728 u32 changed)
2729 {
2730 bool do_join = false, set_assoc = false;
2731 bool is_ibss = (wl->bss_type == BSS_TYPE_IBSS);
2732 u32 sta_rate_set = 0;
2733 int ret;
2734 struct ieee80211_sta *sta;
2735 bool sta_exists = false;
2736 struct ieee80211_sta_ht_cap sta_ht_cap;
2737
2738 if (is_ibss) {
2739 ret = wl1271_bss_beacon_info_changed(wl, vif, bss_conf,
2740 changed);
2741 if (ret < 0)
2742 goto out;
2743 }
2744
2745 if ((changed & BSS_CHANGED_BEACON_INT) && is_ibss)
2746 do_join = true;
2747
2748 /* Need to update the SSID (for filtering etc) */
2749 if ((changed & BSS_CHANGED_BEACON) && is_ibss)
2750 do_join = true;
2751
2752 if ((changed & BSS_CHANGED_BEACON_ENABLED) && is_ibss) {
2753 wl1271_debug(DEBUG_ADHOC, "ad-hoc beaconing: %s",
2754 bss_conf->enable_beacon ? "enabled" : "disabled");
2755
2756 if (bss_conf->enable_beacon)
2757 wl->set_bss_type = BSS_TYPE_IBSS;
2758 else
2759 wl->set_bss_type = BSS_TYPE_STA_BSS;
2760 do_join = true;
2761 }
2762
2763 if ((changed & BSS_CHANGED_CQM)) {
2764 bool enable = false;
2765 if (bss_conf->cqm_rssi_thold)
2766 enable = true;
2767 ret = wl1271_acx_rssi_snr_trigger(wl, enable,
2768 bss_conf->cqm_rssi_thold,
2769 bss_conf->cqm_rssi_hyst);
2770 if (ret < 0)
2771 goto out;
2772 wl->rssi_thold = bss_conf->cqm_rssi_thold;
2773 }
2774
2775 if ((changed & BSS_CHANGED_BSSID) &&
2776 /*
2777 * Now we know the correct bssid, so we send a new join command
2778 * and enable the BSSID filter
2779 */
2780 memcmp(wl->bssid, bss_conf->bssid, ETH_ALEN)) {
2781 memcpy(wl->bssid, bss_conf->bssid, ETH_ALEN);
2782
2783 if (!is_zero_ether_addr(wl->bssid)) {
2784 ret = wl1271_cmd_build_null_data(wl);
2785 if (ret < 0)
2786 goto out;
2787
2788 ret = wl1271_build_qos_null_data(wl);
2789 if (ret < 0)
2790 goto out;
2791
2792 /* filter out all packets not from this BSSID */
2793 wl1271_configure_filters(wl, 0);
2794
2795 /* Need to update the BSSID (for filtering etc) */
2796 do_join = true;
2797 }
2798 }
2799
2800 rcu_read_lock();
2801 sta = ieee80211_find_sta(vif, bss_conf->bssid);
2802 if (sta) {
2803 /* save the supp_rates of the ap */
2804 sta_rate_set = sta->supp_rates[wl->hw->conf.channel->band];
2805 if (sta->ht_cap.ht_supported)
2806 sta_rate_set |=
2807 (sta->ht_cap.mcs.rx_mask[0] << HW_HT_RATES_OFFSET);
2808 sta_ht_cap = sta->ht_cap;
2809 sta_exists = true;
2810 }
2811 rcu_read_unlock();
2812
2813 if (sta_exists) {
2814 /* handle new association with HT and HT information change */
2815 if ((changed & BSS_CHANGED_HT) &&
2816 (bss_conf->channel_type != NL80211_CHAN_NO_HT)) {
2817 ret = wl1271_acx_set_ht_capabilities(wl, &sta_ht_cap,
2818 true);
2819 if (ret < 0) {
2820 wl1271_warning("Set ht cap true failed %d",
2821 ret);
2822 goto out;
2823 }
2824 ret = wl1271_acx_set_ht_information(wl,
2825 bss_conf->ht_operation_mode);
2826 if (ret < 0) {
2827 wl1271_warning("Set ht information failed %d",
2828 ret);
2829 goto out;
2830 }
2831 }
2832 /* handle new association without HT and disassociation */
2833 else if (changed & BSS_CHANGED_ASSOC) {
2834 ret = wl1271_acx_set_ht_capabilities(wl, &sta_ht_cap,
2835 false);
2836 if (ret < 0) {
2837 wl1271_warning("Set ht cap false failed %d",
2838 ret);
2839 goto out;
2840 }
2841 }
2842 }
2843
2844 if ((changed & BSS_CHANGED_ASSOC)) {
2845 if (bss_conf->assoc) {
2846 u32 rates;
2847 int ieoffset;
2848 wl->aid = bss_conf->aid;
2849 set_assoc = true;
2850
2851 wl->ps_poll_failures = 0;
2852
2853 /*
2854 * use basic rates from AP, and determine lowest rate
2855 * to use with control frames.
2856 */
2857 rates = bss_conf->basic_rates;
2858 wl->basic_rate_set = wl1271_tx_enabled_rates_get(wl,
2859 rates);
2860 wl->basic_rate = wl1271_tx_min_rate_get(wl);
2861 if (sta_rate_set)
2862 wl->rate_set = wl1271_tx_enabled_rates_get(wl,
2863 sta_rate_set);
2864 ret = wl1271_acx_sta_rate_policies(wl);
2865 if (ret < 0)
2866 goto out;
2867
2868 /*
2869 * with wl1271, we don't need to update the
2870 * beacon_int and dtim_period, because the firmware
2871 * updates it by itself when the first beacon is
2872 * received after a join.
2873 */
2874 ret = wl1271_cmd_build_ps_poll(wl, wl->aid);
2875 if (ret < 0)
2876 goto out;
2877
2878 /*
2879 * Get a template for hardware connection maintenance
2880 */
2881 dev_kfree_skb(wl->probereq);
2882 wl->probereq = wl1271_cmd_build_ap_probe_req(wl, NULL);
2883 ieoffset = offsetof(struct ieee80211_mgmt,
2884 u.probe_req.variable);
2885 wl1271_ssid_set(wl, wl->probereq, ieoffset);
2886
2887 /* enable the connection monitoring feature */
2888 ret = wl1271_acx_conn_monit_params(wl, true);
2889 if (ret < 0)
2890 goto out;
2891
2892 /* If we want to go in PSM but we're not there yet */
2893 if (test_bit(WL1271_FLAG_PSM_REQUESTED, &wl->flags) &&
2894 !test_bit(WL1271_FLAG_PSM, &wl->flags)) {
2895 enum wl1271_cmd_ps_mode mode;
2896
2897 mode = STATION_POWER_SAVE_MODE;
2898 ret = wl1271_ps_set_mode(wl, mode,
2899 wl->basic_rate,
2900 true);
2901 if (ret < 0)
2902 goto out;
2903 }
2904 } else {
2905 /* use defaults when not associated */
2906 bool was_assoc =
2907 !!test_and_clear_bit(WL1271_FLAG_STA_ASSOCIATED,
2908 &wl->flags);
2909 clear_bit(WL1271_FLAG_STA_STATE_SENT, &wl->flags);
2910 wl->aid = 0;
2911
2912 /* free probe-request template */
2913 dev_kfree_skb(wl->probereq);
2914 wl->probereq = NULL;
2915
2916 /* re-enable dynamic ps - just in case */
2917 ieee80211_enable_dyn_ps(wl->vif);
2918
2919 /* revert back to minimum rates for the current band */
2920 wl1271_set_band_rate(wl);
2921 wl->basic_rate = wl1271_tx_min_rate_get(wl);
2922 ret = wl1271_acx_sta_rate_policies(wl);
2923 if (ret < 0)
2924 goto out;
2925
2926 /* disable connection monitor features */
2927 ret = wl1271_acx_conn_monit_params(wl, false);
2928
2929 /* Disable the keep-alive feature */
2930 ret = wl1271_acx_keep_alive_mode(wl, false);
2931 if (ret < 0)
2932 goto out;
2933
2934 /* restore the bssid filter and go to dummy bssid */
2935 if (was_assoc) {
2936 wl1271_unjoin(wl);
2937 wl1271_dummy_join(wl);
2938 }
2939 }
2940 }
2941
2942 ret = wl1271_bss_erp_info_changed(wl, bss_conf, changed);
2943 if (ret < 0)
2944 goto out;
2945
2946 if (changed & BSS_CHANGED_ARP_FILTER) {
2947 __be32 addr = bss_conf->arp_addr_list[0];
2948 WARN_ON(wl->bss_type != BSS_TYPE_STA_BSS);
2949
2950 if (bss_conf->arp_addr_cnt == 1 &&
2951 bss_conf->arp_filter_enabled) {
2952 /*
2953 * The template should have been configured only upon
2954 * association. however, it seems that the correct ip
2955 * isn't being set (when sending), so we have to
2956 * reconfigure the template upon every ip change.
2957 */
2958 ret = wl1271_cmd_build_arp_rsp(wl, addr);
2959 if (ret < 0) {
2960 wl1271_warning("build arp rsp failed: %d", ret);
2961 goto out;
2962 }
2963
2964 ret = wl1271_acx_arp_ip_filter(wl,
2965 ACX_ARP_FILTER_ARP_FILTERING,
2966 addr);
2967 } else
2968 ret = wl1271_acx_arp_ip_filter(wl, 0, addr);
2969
2970 if (ret < 0)
2971 goto out;
2972 }
2973
2974 if (do_join) {
2975 ret = wl1271_join(wl, set_assoc);
2976 if (ret < 0) {
2977 wl1271_warning("cmd join failed %d", ret);
2978 goto out;
2979 }
2980 }
2981
2982 out:
2983 return;
2984 }
2985
2986 static void wl1271_op_bss_info_changed(struct ieee80211_hw *hw,
2987 struct ieee80211_vif *vif,
2988 struct ieee80211_bss_conf *bss_conf,
2989 u32 changed)
2990 {
2991 struct wl1271 *wl = hw->priv;
2992 bool is_ap = (wl->bss_type == BSS_TYPE_AP_BSS);
2993 int ret;
2994
2995 wl1271_debug(DEBUG_MAC80211, "mac80211 bss info changed 0x%x",
2996 (int)changed);
2997
2998 mutex_lock(&wl->mutex);
2999
3000 if (unlikely(wl->state == WL1271_STATE_OFF))
3001 goto out;
3002
3003 ret = wl1271_ps_elp_wakeup(wl);
3004 if (ret < 0)
3005 goto out;
3006
3007 if (is_ap)
3008 wl1271_bss_info_changed_ap(wl, vif, bss_conf, changed);
3009 else
3010 wl1271_bss_info_changed_sta(wl, vif, bss_conf, changed);
3011
3012 wl1271_ps_elp_sleep(wl);
3013
3014 out:
3015 mutex_unlock(&wl->mutex);
3016 }
3017
3018 static int wl1271_op_conf_tx(struct ieee80211_hw *hw, u16 queue,
3019 const struct ieee80211_tx_queue_params *params)
3020 {
3021 struct wl1271 *wl = hw->priv;
3022 u8 ps_scheme;
3023 int ret = 0;
3024
3025 mutex_lock(&wl->mutex);
3026
3027 wl1271_debug(DEBUG_MAC80211, "mac80211 conf tx %d", queue);
3028
3029 if (params->uapsd)
3030 ps_scheme = CONF_PS_SCHEME_UPSD_TRIGGER;
3031 else
3032 ps_scheme = CONF_PS_SCHEME_LEGACY;
3033
3034 if (wl->state == WL1271_STATE_OFF) {
3035 /*
3036 * If the state is off, the parameters will be recorded and
3037 * configured on init. This happens in AP-mode.
3038 */
3039 struct conf_tx_ac_category *conf_ac =
3040 &wl->conf.tx.ac_conf[wl1271_tx_get_queue(queue)];
3041 struct conf_tx_tid *conf_tid =
3042 &wl->conf.tx.tid_conf[wl1271_tx_get_queue(queue)];
3043
3044 conf_ac->ac = wl1271_tx_get_queue(queue);
3045 conf_ac->cw_min = (u8)params->cw_min;
3046 conf_ac->cw_max = params->cw_max;
3047 conf_ac->aifsn = params->aifs;
3048 conf_ac->tx_op_limit = params->txop << 5;
3049
3050 conf_tid->queue_id = wl1271_tx_get_queue(queue);
3051 conf_tid->channel_type = CONF_CHANNEL_TYPE_EDCF;
3052 conf_tid->tsid = wl1271_tx_get_queue(queue);
3053 conf_tid->ps_scheme = ps_scheme;
3054 conf_tid->ack_policy = CONF_ACK_POLICY_LEGACY;
3055 conf_tid->apsd_conf[0] = 0;
3056 conf_tid->apsd_conf[1] = 0;
3057 goto out;
3058 }
3059
3060 ret = wl1271_ps_elp_wakeup(wl);
3061 if (ret < 0)
3062 goto out;
3063
3064 /*
3065 * the txop is confed in units of 32us by the mac80211,
3066 * we need us
3067 */
3068 ret = wl1271_acx_ac_cfg(wl, wl1271_tx_get_queue(queue),
3069 params->cw_min, params->cw_max,
3070 params->aifs, params->txop << 5);
3071 if (ret < 0)
3072 goto out_sleep;
3073
3074 ret = wl1271_acx_tid_cfg(wl, wl1271_tx_get_queue(queue),
3075 CONF_CHANNEL_TYPE_EDCF,
3076 wl1271_tx_get_queue(queue),
3077 ps_scheme, CONF_ACK_POLICY_LEGACY,
3078 0, 0);
3079
3080 out_sleep:
3081 wl1271_ps_elp_sleep(wl);
3082
3083 out:
3084 mutex_unlock(&wl->mutex);
3085
3086 return ret;
3087 }
3088
3089 static u64 wl1271_op_get_tsf(struct ieee80211_hw *hw)
3090 {
3091
3092 struct wl1271 *wl = hw->priv;
3093 u64 mactime = ULLONG_MAX;
3094 int ret;
3095
3096 wl1271_debug(DEBUG_MAC80211, "mac80211 get tsf");
3097
3098 mutex_lock(&wl->mutex);
3099
3100 if (unlikely(wl->state == WL1271_STATE_OFF))
3101 goto out;
3102
3103 ret = wl1271_ps_elp_wakeup(wl);
3104 if (ret < 0)
3105 goto out;
3106
3107 ret = wl1271_acx_tsf_info(wl, &mactime);
3108 if (ret < 0)
3109 goto out_sleep;
3110
3111 out_sleep:
3112 wl1271_ps_elp_sleep(wl);
3113
3114 out:
3115 mutex_unlock(&wl->mutex);
3116 return mactime;
3117 }
3118
3119 static int wl1271_op_get_survey(struct ieee80211_hw *hw, int idx,
3120 struct survey_info *survey)
3121 {
3122 struct wl1271 *wl = hw->priv;
3123 struct ieee80211_conf *conf = &hw->conf;
3124
3125 if (idx != 0)
3126 return -ENOENT;
3127
3128 survey->channel = conf->channel;
3129 survey->filled = SURVEY_INFO_NOISE_DBM;
3130 survey->noise = wl->noise;
3131
3132 return 0;
3133 }
3134
3135 static int wl1271_allocate_sta(struct wl1271 *wl,
3136 struct ieee80211_sta *sta,
3137 u8 *hlid)
3138 {
3139 struct wl1271_station *wl_sta;
3140 int id;
3141
3142 id = find_first_zero_bit(wl->ap_hlid_map, AP_MAX_STATIONS);
3143 if (id >= AP_MAX_STATIONS) {
3144 wl1271_warning("could not allocate HLID - too much stations");
3145 return -EBUSY;
3146 }
3147
3148 wl_sta = (struct wl1271_station *)sta->drv_priv;
3149 __set_bit(id, wl->ap_hlid_map);
3150 wl_sta->hlid = WL1271_AP_STA_HLID_START + id;
3151 *hlid = wl_sta->hlid;
3152 memcpy(wl->links[wl_sta->hlid].addr, sta->addr, ETH_ALEN);
3153 return 0;
3154 }
3155
3156 static void wl1271_free_sta(struct wl1271 *wl, u8 hlid)
3157 {
3158 int id = hlid - WL1271_AP_STA_HLID_START;
3159
3160 if (WARN_ON(!test_bit(id, wl->ap_hlid_map)))
3161 return;
3162
3163 __clear_bit(id, wl->ap_hlid_map);
3164 memset(wl->links[hlid].addr, 0, ETH_ALEN);
3165 wl1271_tx_reset_link_queues(wl, hlid);
3166 __clear_bit(hlid, &wl->ap_ps_map);
3167 __clear_bit(hlid, (unsigned long *)&wl->ap_fw_ps_map);
3168 }
3169
3170 static int wl1271_op_sta_add(struct ieee80211_hw *hw,
3171 struct ieee80211_vif *vif,
3172 struct ieee80211_sta *sta)
3173 {
3174 struct wl1271 *wl = hw->priv;
3175 int ret = 0;
3176 u8 hlid;
3177
3178 mutex_lock(&wl->mutex);
3179
3180 if (unlikely(wl->state == WL1271_STATE_OFF))
3181 goto out;
3182
3183 if (wl->bss_type != BSS_TYPE_AP_BSS)
3184 goto out;
3185
3186 wl1271_debug(DEBUG_MAC80211, "mac80211 add sta %d", (int)sta->aid);
3187
3188 ret = wl1271_allocate_sta(wl, sta, &hlid);
3189 if (ret < 0)
3190 goto out;
3191
3192 ret = wl1271_ps_elp_wakeup(wl);
3193 if (ret < 0)
3194 goto out_free_sta;
3195
3196 ret = wl1271_cmd_add_sta(wl, sta, hlid);
3197 if (ret < 0)
3198 goto out_sleep;
3199
3200 out_sleep:
3201 wl1271_ps_elp_sleep(wl);
3202
3203 out_free_sta:
3204 if (ret < 0)
3205 wl1271_free_sta(wl, hlid);
3206
3207 out:
3208 mutex_unlock(&wl->mutex);
3209 return ret;
3210 }
3211
3212 static int wl1271_op_sta_remove(struct ieee80211_hw *hw,
3213 struct ieee80211_vif *vif,
3214 struct ieee80211_sta *sta)
3215 {
3216 struct wl1271 *wl = hw->priv;
3217 struct wl1271_station *wl_sta;
3218 int ret = 0, id;
3219
3220 mutex_lock(&wl->mutex);
3221
3222 if (unlikely(wl->state == WL1271_STATE_OFF))
3223 goto out;
3224
3225 if (wl->bss_type != BSS_TYPE_AP_BSS)
3226 goto out;
3227
3228 wl1271_debug(DEBUG_MAC80211, "mac80211 remove sta %d", (int)sta->aid);
3229
3230 wl_sta = (struct wl1271_station *)sta->drv_priv;
3231 id = wl_sta->hlid - WL1271_AP_STA_HLID_START;
3232 if (WARN_ON(!test_bit(id, wl->ap_hlid_map)))
3233 goto out;
3234
3235 ret = wl1271_ps_elp_wakeup(wl);
3236 if (ret < 0)
3237 goto out;
3238
3239 ret = wl1271_cmd_remove_sta(wl, wl_sta->hlid);
3240 if (ret < 0)
3241 goto out_sleep;
3242
3243 wl1271_free_sta(wl, wl_sta->hlid);
3244
3245 out_sleep:
3246 wl1271_ps_elp_sleep(wl);
3247
3248 out:
3249 mutex_unlock(&wl->mutex);
3250 return ret;
3251 }
3252
3253 static int wl1271_op_ampdu_action(struct ieee80211_hw *hw,
3254 struct ieee80211_vif *vif,
3255 enum ieee80211_ampdu_mlme_action action,
3256 struct ieee80211_sta *sta, u16 tid, u16 *ssn,
3257 u8 buf_size)
3258 {
3259 struct wl1271 *wl = hw->priv;
3260 int ret;
3261
3262 mutex_lock(&wl->mutex);
3263
3264 if (unlikely(wl->state == WL1271_STATE_OFF)) {
3265 ret = -EAGAIN;
3266 goto out;
3267 }
3268
3269 ret = wl1271_ps_elp_wakeup(wl);
3270 if (ret < 0)
3271 goto out;
3272
3273 switch (action) {
3274 case IEEE80211_AMPDU_RX_START:
3275 if (wl->ba_support) {
3276 ret = wl1271_acx_set_ba_receiver_session(wl, tid, *ssn,
3277 true);
3278 if (!ret)
3279 wl->ba_rx_bitmap |= BIT(tid);
3280 } else {
3281 ret = -ENOTSUPP;
3282 }
3283 break;
3284
3285 case IEEE80211_AMPDU_RX_STOP:
3286 ret = wl1271_acx_set_ba_receiver_session(wl, tid, 0, false);
3287 if (!ret)
3288 wl->ba_rx_bitmap &= ~BIT(tid);
3289 break;
3290
3291 /*
3292 * The BA initiator session management in FW independently.
3293 * Falling break here on purpose for all TX APDU commands.
3294 */
3295 case IEEE80211_AMPDU_TX_START:
3296 case IEEE80211_AMPDU_TX_STOP:
3297 case IEEE80211_AMPDU_TX_OPERATIONAL:
3298 ret = -EINVAL;
3299 break;
3300
3301 default:
3302 wl1271_error("Incorrect ampdu action id=%x\n", action);
3303 ret = -EINVAL;
3304 }
3305
3306 wl1271_ps_elp_sleep(wl);
3307
3308 out:
3309 mutex_unlock(&wl->mutex);
3310
3311 return ret;
3312 }
3313
3314 static bool wl1271_tx_frames_pending(struct ieee80211_hw *hw)
3315 {
3316 struct wl1271 *wl = hw->priv;
3317 bool ret = false;
3318
3319 mutex_lock(&wl->mutex);
3320
3321 if (unlikely(wl->state == WL1271_STATE_OFF))
3322 goto out;
3323
3324 /* packets are considered pending if in the TX queue or the FW */
3325 ret = (wl->tx_queue_count > 0) || (wl->tx_frames_cnt > 0);
3326
3327 /* the above is appropriate for STA mode for PS purposes */
3328 WARN_ON(wl->bss_type != BSS_TYPE_STA_BSS);
3329
3330 out:
3331 mutex_unlock(&wl->mutex);
3332
3333 return ret;
3334 }
3335
3336 /* can't be const, mac80211 writes to this */
3337 static struct ieee80211_rate wl1271_rates[] = {
3338 { .bitrate = 10,
3339 .hw_value = CONF_HW_BIT_RATE_1MBPS,
3340 .hw_value_short = CONF_HW_BIT_RATE_1MBPS, },
3341 { .bitrate = 20,
3342 .hw_value = CONF_HW_BIT_RATE_2MBPS,
3343 .hw_value_short = CONF_HW_BIT_RATE_2MBPS,
3344 .flags = IEEE80211_RATE_SHORT_PREAMBLE },
3345 { .bitrate = 55,
3346 .hw_value = CONF_HW_BIT_RATE_5_5MBPS,
3347 .hw_value_short = CONF_HW_BIT_RATE_5_5MBPS,
3348 .flags = IEEE80211_RATE_SHORT_PREAMBLE },
3349 { .bitrate = 110,
3350 .hw_value = CONF_HW_BIT_RATE_11MBPS,
3351 .hw_value_short = CONF_HW_BIT_RATE_11MBPS,
3352 .flags = IEEE80211_RATE_SHORT_PREAMBLE },
3353 { .bitrate = 60,
3354 .hw_value = CONF_HW_BIT_RATE_6MBPS,
3355 .hw_value_short = CONF_HW_BIT_RATE_6MBPS, },
3356 { .bitrate = 90,
3357 .hw_value = CONF_HW_BIT_RATE_9MBPS,
3358 .hw_value_short = CONF_HW_BIT_RATE_9MBPS, },
3359 { .bitrate = 120,
3360 .hw_value = CONF_HW_BIT_RATE_12MBPS,
3361 .hw_value_short = CONF_HW_BIT_RATE_12MBPS, },
3362 { .bitrate = 180,
3363 .hw_value = CONF_HW_BIT_RATE_18MBPS,
3364 .hw_value_short = CONF_HW_BIT_RATE_18MBPS, },
3365 { .bitrate = 240,
3366 .hw_value = CONF_HW_BIT_RATE_24MBPS,
3367 .hw_value_short = CONF_HW_BIT_RATE_24MBPS, },
3368 { .bitrate = 360,
3369 .hw_value = CONF_HW_BIT_RATE_36MBPS,
3370 .hw_value_short = CONF_HW_BIT_RATE_36MBPS, },
3371 { .bitrate = 480,
3372 .hw_value = CONF_HW_BIT_RATE_48MBPS,
3373 .hw_value_short = CONF_HW_BIT_RATE_48MBPS, },
3374 { .bitrate = 540,
3375 .hw_value = CONF_HW_BIT_RATE_54MBPS,
3376 .hw_value_short = CONF_HW_BIT_RATE_54MBPS, },
3377 };
3378
3379 /* can't be const, mac80211 writes to this */
3380 static struct ieee80211_channel wl1271_channels[] = {
3381 { .hw_value = 1, .center_freq = 2412, .max_power = 25 },
3382 { .hw_value = 2, .center_freq = 2417, .max_power = 25 },
3383 { .hw_value = 3, .center_freq = 2422, .max_power = 25 },
3384 { .hw_value = 4, .center_freq = 2427, .max_power = 25 },
3385 { .hw_value = 5, .center_freq = 2432, .max_power = 25 },
3386 { .hw_value = 6, .center_freq = 2437, .max_power = 25 },
3387 { .hw_value = 7, .center_freq = 2442, .max_power = 25 },
3388 { .hw_value = 8, .center_freq = 2447, .max_power = 25 },
3389 { .hw_value = 9, .center_freq = 2452, .max_power = 25 },
3390 { .hw_value = 10, .center_freq = 2457, .max_power = 25 },
3391 { .hw_value = 11, .center_freq = 2462, .max_power = 25 },
3392 { .hw_value = 12, .center_freq = 2467, .max_power = 25 },
3393 { .hw_value = 13, .center_freq = 2472, .max_power = 25 },
3394 { .hw_value = 14, .center_freq = 2484, .max_power = 25 },
3395 };
3396
3397 /* mapping to indexes for wl1271_rates */
3398 static const u8 wl1271_rate_to_idx_2ghz[] = {
3399 /* MCS rates are used only with 11n */
3400 7, /* CONF_HW_RXTX_RATE_MCS7 */
3401 6, /* CONF_HW_RXTX_RATE_MCS6 */
3402 5, /* CONF_HW_RXTX_RATE_MCS5 */
3403 4, /* CONF_HW_RXTX_RATE_MCS4 */
3404 3, /* CONF_HW_RXTX_RATE_MCS3 */
3405 2, /* CONF_HW_RXTX_RATE_MCS2 */
3406 1, /* CONF_HW_RXTX_RATE_MCS1 */
3407 0, /* CONF_HW_RXTX_RATE_MCS0 */
3408
3409 11, /* CONF_HW_RXTX_RATE_54 */
3410 10, /* CONF_HW_RXTX_RATE_48 */
3411 9, /* CONF_HW_RXTX_RATE_36 */
3412 8, /* CONF_HW_RXTX_RATE_24 */
3413
3414 /* TI-specific rate */
3415 CONF_HW_RXTX_RATE_UNSUPPORTED, /* CONF_HW_RXTX_RATE_22 */
3416
3417 7, /* CONF_HW_RXTX_RATE_18 */
3418 6, /* CONF_HW_RXTX_RATE_12 */
3419 3, /* CONF_HW_RXTX_RATE_11 */
3420 5, /* CONF_HW_RXTX_RATE_9 */
3421 4, /* CONF_HW_RXTX_RATE_6 */
3422 2, /* CONF_HW_RXTX_RATE_5_5 */
3423 1, /* CONF_HW_RXTX_RATE_2 */
3424 0 /* CONF_HW_RXTX_RATE_1 */
3425 };
3426
3427 /* 11n STA capabilities */
3428 #define HW_RX_HIGHEST_RATE 72
3429
3430 #ifdef CONFIG_WL12XX_HT
3431 #define WL12XX_HT_CAP { \
3432 .cap = IEEE80211_HT_CAP_GRN_FLD | IEEE80211_HT_CAP_SGI_20 | \
3433 (1 << IEEE80211_HT_CAP_RX_STBC_SHIFT), \
3434 .ht_supported = true, \
3435 .ampdu_factor = IEEE80211_HT_MAX_AMPDU_8K, \
3436 .ampdu_density = IEEE80211_HT_MPDU_DENSITY_8, \
3437 .mcs = { \
3438 .rx_mask = { 0xff, 0, 0, 0, 0, 0, 0, 0, 0, 0, }, \
3439 .rx_highest = cpu_to_le16(HW_RX_HIGHEST_RATE), \
3440 .tx_params = IEEE80211_HT_MCS_TX_DEFINED, \
3441 }, \
3442 }
3443 #else
3444 #define WL12XX_HT_CAP { \
3445 .ht_supported = false, \
3446 }
3447 #endif
3448
3449 /* can't be const, mac80211 writes to this */
3450 static struct ieee80211_supported_band wl1271_band_2ghz = {
3451 .channels = wl1271_channels,
3452 .n_channels = ARRAY_SIZE(wl1271_channels),
3453 .bitrates = wl1271_rates,
3454 .n_bitrates = ARRAY_SIZE(wl1271_rates),
3455 .ht_cap = WL12XX_HT_CAP,
3456 };
3457
3458 /* 5 GHz data rates for WL1273 */
3459 static struct ieee80211_rate wl1271_rates_5ghz[] = {
3460 { .bitrate = 60,
3461 .hw_value = CONF_HW_BIT_RATE_6MBPS,
3462 .hw_value_short = CONF_HW_BIT_RATE_6MBPS, },
3463 { .bitrate = 90,
3464 .hw_value = CONF_HW_BIT_RATE_9MBPS,
3465 .hw_value_short = CONF_HW_BIT_RATE_9MBPS, },
3466 { .bitrate = 120,
3467 .hw_value = CONF_HW_BIT_RATE_12MBPS,
3468 .hw_value_short = CONF_HW_BIT_RATE_12MBPS, },
3469 { .bitrate = 180,
3470 .hw_value = CONF_HW_BIT_RATE_18MBPS,
3471 .hw_value_short = CONF_HW_BIT_RATE_18MBPS, },
3472 { .bitrate = 240,
3473 .hw_value = CONF_HW_BIT_RATE_24MBPS,
3474 .hw_value_short = CONF_HW_BIT_RATE_24MBPS, },
3475 { .bitrate = 360,
3476 .hw_value = CONF_HW_BIT_RATE_36MBPS,
3477 .hw_value_short = CONF_HW_BIT_RATE_36MBPS, },
3478 { .bitrate = 480,
3479 .hw_value = CONF_HW_BIT_RATE_48MBPS,
3480 .hw_value_short = CONF_HW_BIT_RATE_48MBPS, },
3481 { .bitrate = 540,
3482 .hw_value = CONF_HW_BIT_RATE_54MBPS,
3483 .hw_value_short = CONF_HW_BIT_RATE_54MBPS, },
3484 };
3485
3486 /* 5 GHz band channels for WL1273 */
3487 static struct ieee80211_channel wl1271_channels_5ghz[] = {
3488 { .hw_value = 7, .center_freq = 5035},
3489 { .hw_value = 8, .center_freq = 5040},
3490 { .hw_value = 9, .center_freq = 5045},
3491 { .hw_value = 11, .center_freq = 5055},
3492 { .hw_value = 12, .center_freq = 5060},
3493 { .hw_value = 16, .center_freq = 5080},
3494 { .hw_value = 34, .center_freq = 5170},
3495 { .hw_value = 36, .center_freq = 5180},
3496 { .hw_value = 38, .center_freq = 5190},
3497 { .hw_value = 40, .center_freq = 5200},
3498 { .hw_value = 42, .center_freq = 5210},
3499 { .hw_value = 44, .center_freq = 5220},
3500 { .hw_value = 46, .center_freq = 5230},
3501 { .hw_value = 48, .center_freq = 5240},
3502 { .hw_value = 52, .center_freq = 5260},
3503 { .hw_value = 56, .center_freq = 5280},
3504 { .hw_value = 60, .center_freq = 5300},
3505 { .hw_value = 64, .center_freq = 5320},
3506 { .hw_value = 100, .center_freq = 5500},
3507 { .hw_value = 104, .center_freq = 5520},
3508 { .hw_value = 108, .center_freq = 5540},
3509 { .hw_value = 112, .center_freq = 5560},
3510 { .hw_value = 116, .center_freq = 5580},
3511 { .hw_value = 120, .center_freq = 5600},
3512 { .hw_value = 124, .center_freq = 5620},
3513 { .hw_value = 128, .center_freq = 5640},
3514 { .hw_value = 132, .center_freq = 5660},
3515 { .hw_value = 136, .center_freq = 5680},
3516 { .hw_value = 140, .center_freq = 5700},
3517 { .hw_value = 149, .center_freq = 5745},
3518 { .hw_value = 153, .center_freq = 5765},
3519 { .hw_value = 157, .center_freq = 5785},
3520 { .hw_value = 161, .center_freq = 5805},
3521 { .hw_value = 165, .center_freq = 5825},
3522 };
3523
3524 /* mapping to indexes for wl1271_rates_5ghz */
3525 static const u8 wl1271_rate_to_idx_5ghz[] = {
3526 /* MCS rates are used only with 11n */
3527 7, /* CONF_HW_RXTX_RATE_MCS7 */
3528 6, /* CONF_HW_RXTX_RATE_MCS6 */
3529 5, /* CONF_HW_RXTX_RATE_MCS5 */
3530 4, /* CONF_HW_RXTX_RATE_MCS4 */
3531 3, /* CONF_HW_RXTX_RATE_MCS3 */
3532 2, /* CONF_HW_RXTX_RATE_MCS2 */
3533 1, /* CONF_HW_RXTX_RATE_MCS1 */
3534 0, /* CONF_HW_RXTX_RATE_MCS0 */
3535
3536 7, /* CONF_HW_RXTX_RATE_54 */
3537 6, /* CONF_HW_RXTX_RATE_48 */
3538 5, /* CONF_HW_RXTX_RATE_36 */
3539 4, /* CONF_HW_RXTX_RATE_24 */
3540
3541 /* TI-specific rate */
3542 CONF_HW_RXTX_RATE_UNSUPPORTED, /* CONF_HW_RXTX_RATE_22 */
3543
3544 3, /* CONF_HW_RXTX_RATE_18 */
3545 2, /* CONF_HW_RXTX_RATE_12 */
3546 CONF_HW_RXTX_RATE_UNSUPPORTED, /* CONF_HW_RXTX_RATE_11 */
3547 1, /* CONF_HW_RXTX_RATE_9 */
3548 0, /* CONF_HW_RXTX_RATE_6 */
3549 CONF_HW_RXTX_RATE_UNSUPPORTED, /* CONF_HW_RXTX_RATE_5_5 */
3550 CONF_HW_RXTX_RATE_UNSUPPORTED, /* CONF_HW_RXTX_RATE_2 */
3551 CONF_HW_RXTX_RATE_UNSUPPORTED /* CONF_HW_RXTX_RATE_1 */
3552 };
3553
3554 static struct ieee80211_supported_band wl1271_band_5ghz = {
3555 .channels = wl1271_channels_5ghz,
3556 .n_channels = ARRAY_SIZE(wl1271_channels_5ghz),
3557 .bitrates = wl1271_rates_5ghz,
3558 .n_bitrates = ARRAY_SIZE(wl1271_rates_5ghz),
3559 .ht_cap = WL12XX_HT_CAP,
3560 };
3561
3562 static const u8 *wl1271_band_rate_to_idx[] = {
3563 [IEEE80211_BAND_2GHZ] = wl1271_rate_to_idx_2ghz,
3564 [IEEE80211_BAND_5GHZ] = wl1271_rate_to_idx_5ghz
3565 };
3566
3567 static const struct ieee80211_ops wl1271_ops = {
3568 .start = wl1271_op_start,
3569 .stop = wl1271_op_stop,
3570 .add_interface = wl1271_op_add_interface,
3571 .remove_interface = wl1271_op_remove_interface,
3572 .suspend = wl1271_op_suspend,
3573 .resume = wl1271_op_resume,
3574 .config = wl1271_op_config,
3575 .prepare_multicast = wl1271_op_prepare_multicast,
3576 .configure_filter = wl1271_op_configure_filter,
3577 .tx = wl1271_op_tx,
3578 .set_key = wl1271_op_set_key,
3579 .hw_scan = wl1271_op_hw_scan,
3580 .sched_scan_start = wl1271_op_sched_scan_start,
3581 .sched_scan_stop = wl1271_op_sched_scan_stop,
3582 .bss_info_changed = wl1271_op_bss_info_changed,
3583 .set_frag_threshold = wl1271_op_set_frag_threshold,
3584 .set_rts_threshold = wl1271_op_set_rts_threshold,
3585 .conf_tx = wl1271_op_conf_tx,
3586 .get_tsf = wl1271_op_get_tsf,
3587 .get_survey = wl1271_op_get_survey,
3588 .sta_add = wl1271_op_sta_add,
3589 .sta_remove = wl1271_op_sta_remove,
3590 .ampdu_action = wl1271_op_ampdu_action,
3591 .tx_frames_pending = wl1271_tx_frames_pending,
3592 CFG80211_TESTMODE_CMD(wl1271_tm_cmd)
3593 };
3594
3595
3596 u8 wl1271_rate_to_idx(int rate, enum ieee80211_band band)
3597 {
3598 u8 idx;
3599
3600 BUG_ON(band >= sizeof(wl1271_band_rate_to_idx)/sizeof(u8 *));
3601
3602 if (unlikely(rate >= CONF_HW_RXTX_RATE_MAX)) {
3603 wl1271_error("Illegal RX rate from HW: %d", rate);
3604 return 0;
3605 }
3606
3607 idx = wl1271_band_rate_to_idx[band][rate];
3608 if (unlikely(idx == CONF_HW_RXTX_RATE_UNSUPPORTED)) {
3609 wl1271_error("Unsupported RX rate from HW: %d", rate);
3610 return 0;
3611 }
3612
3613 return idx;
3614 }
3615
3616 static ssize_t wl1271_sysfs_show_bt_coex_state(struct device *dev,
3617 struct device_attribute *attr,
3618 char *buf)
3619 {
3620 struct wl1271 *wl = dev_get_drvdata(dev);
3621 ssize_t len;
3622
3623 len = PAGE_SIZE;
3624
3625 mutex_lock(&wl->mutex);
3626 len = snprintf(buf, len, "%d\n\n0 - off\n1 - on\n",
3627 wl->sg_enabled);
3628 mutex_unlock(&wl->mutex);
3629
3630 return len;
3631
3632 }
3633
3634 static ssize_t wl1271_sysfs_store_bt_coex_state(struct device *dev,
3635 struct device_attribute *attr,
3636 const char *buf, size_t count)
3637 {
3638 struct wl1271 *wl = dev_get_drvdata(dev);
3639 unsigned long res;
3640 int ret;
3641
3642 ret = kstrtoul(buf, 10, &res);
3643 if (ret < 0) {
3644 wl1271_warning("incorrect value written to bt_coex_mode");
3645 return count;
3646 }
3647
3648 mutex_lock(&wl->mutex);
3649
3650 res = !!res;
3651
3652 if (res == wl->sg_enabled)
3653 goto out;
3654
3655 wl->sg_enabled = res;
3656
3657 if (wl->state == WL1271_STATE_OFF)
3658 goto out;
3659
3660 ret = wl1271_ps_elp_wakeup(wl);
3661 if (ret < 0)
3662 goto out;
3663
3664 wl1271_acx_sg_enable(wl, wl->sg_enabled);
3665 wl1271_ps_elp_sleep(wl);
3666
3667 out:
3668 mutex_unlock(&wl->mutex);
3669 return count;
3670 }
3671
3672 static DEVICE_ATTR(bt_coex_state, S_IRUGO | S_IWUSR,
3673 wl1271_sysfs_show_bt_coex_state,
3674 wl1271_sysfs_store_bt_coex_state);
3675
3676 static ssize_t wl1271_sysfs_show_hw_pg_ver(struct device *dev,
3677 struct device_attribute *attr,
3678 char *buf)
3679 {
3680 struct wl1271 *wl = dev_get_drvdata(dev);
3681 ssize_t len;
3682
3683 len = PAGE_SIZE;
3684
3685 mutex_lock(&wl->mutex);
3686 if (wl->hw_pg_ver >= 0)
3687 len = snprintf(buf, len, "%d\n", wl->hw_pg_ver);
3688 else
3689 len = snprintf(buf, len, "n/a\n");
3690 mutex_unlock(&wl->mutex);
3691
3692 return len;
3693 }
3694
3695 static DEVICE_ATTR(hw_pg_ver, S_IRUGO | S_IWUSR,
3696 wl1271_sysfs_show_hw_pg_ver, NULL);
3697
3698 int wl1271_register_hw(struct wl1271 *wl)
3699 {
3700 int ret;
3701
3702 if (wl->mac80211_registered)
3703 return 0;
3704
3705 ret = wl1271_fetch_nvs(wl);
3706 if (ret == 0) {
3707 /* NOTE: The wl->nvs->nvs element must be first, in
3708 * order to simplify the casting, we assume it is at
3709 * the beginning of the wl->nvs structure.
3710 */
3711 u8 *nvs_ptr = (u8 *)wl->nvs;
3712
3713 wl->mac_addr[0] = nvs_ptr[11];
3714 wl->mac_addr[1] = nvs_ptr[10];
3715 wl->mac_addr[2] = nvs_ptr[6];
3716 wl->mac_addr[3] = nvs_ptr[5];
3717 wl->mac_addr[4] = nvs_ptr[4];
3718 wl->mac_addr[5] = nvs_ptr[3];
3719 }
3720
3721 SET_IEEE80211_PERM_ADDR(wl->hw, wl->mac_addr);
3722
3723 ret = ieee80211_register_hw(wl->hw);
3724 if (ret < 0) {
3725 wl1271_error("unable to register mac80211 hw: %d", ret);
3726 return ret;
3727 }
3728
3729 wl->mac80211_registered = true;
3730
3731 wl1271_debugfs_init(wl);
3732
3733 register_netdevice_notifier(&wl1271_dev_notifier);
3734
3735 wl1271_notice("loaded");
3736
3737 return 0;
3738 }
3739 EXPORT_SYMBOL_GPL(wl1271_register_hw);
3740
3741 void wl1271_unregister_hw(struct wl1271 *wl)
3742 {
3743 if (wl->state == WL1271_STATE_PLT)
3744 __wl1271_plt_stop(wl);
3745
3746 unregister_netdevice_notifier(&wl1271_dev_notifier);
3747 ieee80211_unregister_hw(wl->hw);
3748 wl->mac80211_registered = false;
3749
3750 }
3751 EXPORT_SYMBOL_GPL(wl1271_unregister_hw);
3752
3753 int wl1271_init_ieee80211(struct wl1271 *wl)
3754 {
3755 static const u32 cipher_suites[] = {
3756 WLAN_CIPHER_SUITE_WEP40,
3757 WLAN_CIPHER_SUITE_WEP104,
3758 WLAN_CIPHER_SUITE_TKIP,
3759 WLAN_CIPHER_SUITE_CCMP,
3760 WL1271_CIPHER_SUITE_GEM,
3761 };
3762
3763 /* The tx descriptor buffer and the TKIP space. */
3764 wl->hw->extra_tx_headroom = WL1271_TKIP_IV_SPACE +
3765 sizeof(struct wl1271_tx_hw_descr);
3766
3767 /* unit us */
3768 /* FIXME: find a proper value */
3769 wl->hw->channel_change_time = 10000;
3770 wl->hw->max_listen_interval = wl->conf.conn.max_listen_interval;
3771
3772 wl->hw->flags = IEEE80211_HW_SIGNAL_DBM |
3773 IEEE80211_HW_BEACON_FILTER |
3774 IEEE80211_HW_SUPPORTS_PS |
3775 IEEE80211_HW_SUPPORTS_UAPSD |
3776 IEEE80211_HW_HAS_RATE_CONTROL |
3777 IEEE80211_HW_CONNECTION_MONITOR |
3778 IEEE80211_HW_SUPPORTS_CQM_RSSI |
3779 IEEE80211_HW_REPORTS_TX_ACK_STATUS |
3780 IEEE80211_HW_SPECTRUM_MGMT |
3781 IEEE80211_HW_AP_LINK_PS;
3782
3783 wl->hw->wiphy->cipher_suites = cipher_suites;
3784 wl->hw->wiphy->n_cipher_suites = ARRAY_SIZE(cipher_suites);
3785
3786 wl->hw->wiphy->interface_modes = BIT(NL80211_IFTYPE_STATION) |
3787 BIT(NL80211_IFTYPE_ADHOC) | BIT(NL80211_IFTYPE_AP);
3788 wl->hw->wiphy->max_scan_ssids = 1;
3789 /*
3790 * Maximum length of elements in scanning probe request templates
3791 * should be the maximum length possible for a template, without
3792 * the IEEE80211 header of the template
3793 */
3794 wl->hw->wiphy->max_scan_ie_len = WL1271_CMD_TEMPL_MAX_SIZE -
3795 sizeof(struct ieee80211_header);
3796
3797 /* make sure all our channels fit in the scanned_ch bitmask */
3798 BUILD_BUG_ON(ARRAY_SIZE(wl1271_channels) +
3799 ARRAY_SIZE(wl1271_channels_5ghz) >
3800 WL1271_MAX_CHANNELS);
3801 /*
3802 * We keep local copies of the band structs because we need to
3803 * modify them on a per-device basis.
3804 */
3805 memcpy(&wl->bands[IEEE80211_BAND_2GHZ], &wl1271_band_2ghz,
3806 sizeof(wl1271_band_2ghz));
3807 memcpy(&wl->bands[IEEE80211_BAND_5GHZ], &wl1271_band_5ghz,
3808 sizeof(wl1271_band_5ghz));
3809
3810 wl->hw->wiphy->bands[IEEE80211_BAND_2GHZ] =
3811 &wl->bands[IEEE80211_BAND_2GHZ];
3812 wl->hw->wiphy->bands[IEEE80211_BAND_5GHZ] =
3813 &wl->bands[IEEE80211_BAND_5GHZ];
3814
3815 wl->hw->queues = 4;
3816 wl->hw->max_rates = 1;
3817
3818 wl->hw->wiphy->reg_notifier = wl1271_reg_notify;
3819
3820 SET_IEEE80211_DEV(wl->hw, wl1271_wl_to_dev(wl));
3821
3822 wl->hw->sta_data_size = sizeof(struct wl1271_station);
3823
3824 wl->hw->max_rx_aggregation_subframes = 8;
3825
3826 return 0;
3827 }
3828 EXPORT_SYMBOL_GPL(wl1271_init_ieee80211);
3829
3830 #define WL1271_DEFAULT_CHANNEL 0
3831
3832 struct ieee80211_hw *wl1271_alloc_hw(void)
3833 {
3834 struct ieee80211_hw *hw;
3835 struct platform_device *plat_dev = NULL;
3836 struct wl1271 *wl;
3837 int i, j, ret;
3838 unsigned int order;
3839
3840 hw = ieee80211_alloc_hw(sizeof(*wl), &wl1271_ops);
3841 if (!hw) {
3842 wl1271_error("could not alloc ieee80211_hw");
3843 ret = -ENOMEM;
3844 goto err_hw_alloc;
3845 }
3846
3847 plat_dev = kmemdup(&wl1271_device, sizeof(wl1271_device), GFP_KERNEL);
3848 if (!plat_dev) {
3849 wl1271_error("could not allocate platform_device");
3850 ret = -ENOMEM;
3851 goto err_plat_alloc;
3852 }
3853
3854 wl = hw->priv;
3855 memset(wl, 0, sizeof(*wl));
3856
3857 INIT_LIST_HEAD(&wl->list);
3858
3859 wl->hw = hw;
3860 wl->plat_dev = plat_dev;
3861
3862 for (i = 0; i < NUM_TX_QUEUES; i++)
3863 skb_queue_head_init(&wl->tx_queue[i]);
3864
3865 for (i = 0; i < NUM_TX_QUEUES; i++)
3866 for (j = 0; j < AP_MAX_LINKS; j++)
3867 skb_queue_head_init(&wl->links[j].tx_queue[i]);
3868
3869 skb_queue_head_init(&wl->deferred_rx_queue);
3870 skb_queue_head_init(&wl->deferred_tx_queue);
3871
3872 INIT_DELAYED_WORK(&wl->elp_work, wl1271_elp_work);
3873 INIT_DELAYED_WORK(&wl->pspoll_work, wl1271_pspoll_work);
3874 INIT_WORK(&wl->netstack_work, wl1271_netstack_work);
3875 INIT_WORK(&wl->tx_work, wl1271_tx_work);
3876 INIT_WORK(&wl->recovery_work, wl1271_recovery_work);
3877 INIT_DELAYED_WORK(&wl->scan_complete_work, wl1271_scan_complete_work);
3878 wl->channel = WL1271_DEFAULT_CHANNEL;
3879 wl->beacon_int = WL1271_DEFAULT_BEACON_INT;
3880 wl->default_key = 0;
3881 wl->rx_counter = 0;
3882 wl->rx_config = WL1271_DEFAULT_STA_RX_CONFIG;
3883 wl->rx_filter = WL1271_DEFAULT_STA_RX_FILTER;
3884 wl->psm_entry_retry = 0;
3885 wl->power_level = WL1271_DEFAULT_POWER_LEVEL;
3886 wl->basic_rate_set = CONF_TX_RATE_MASK_BASIC;
3887 wl->basic_rate = CONF_TX_RATE_MASK_BASIC;
3888 wl->rate_set = CONF_TX_RATE_MASK_BASIC;
3889 wl->band = IEEE80211_BAND_2GHZ;
3890 wl->vif = NULL;
3891 wl->flags = 0;
3892 wl->sg_enabled = true;
3893 wl->hw_pg_ver = -1;
3894 wl->bss_type = MAX_BSS_TYPE;
3895 wl->set_bss_type = MAX_BSS_TYPE;
3896 wl->fw_bss_type = MAX_BSS_TYPE;
3897 wl->last_tx_hlid = 0;
3898 wl->ap_ps_map = 0;
3899 wl->ap_fw_ps_map = 0;
3900 wl->quirks = 0;
3901 wl->platform_quirks = 0;
3902 wl->sched_scanning = false;
3903
3904 memset(wl->tx_frames_map, 0, sizeof(wl->tx_frames_map));
3905 for (i = 0; i < ACX_TX_DESCRIPTORS; i++)
3906 wl->tx_frames[i] = NULL;
3907
3908 spin_lock_init(&wl->wl_lock);
3909
3910 wl->state = WL1271_STATE_OFF;
3911 mutex_init(&wl->mutex);
3912
3913 /* Apply default driver configuration. */
3914 wl1271_conf_init(wl);
3915
3916 order = get_order(WL1271_AGGR_BUFFER_SIZE);
3917 wl->aggr_buf = (u8 *)__get_free_pages(GFP_KERNEL, order);
3918 if (!wl->aggr_buf) {
3919 ret = -ENOMEM;
3920 goto err_hw;
3921 }
3922
3923 wl->dummy_packet = wl12xx_alloc_dummy_packet(wl);
3924 if (!wl->dummy_packet) {
3925 ret = -ENOMEM;
3926 goto err_aggr;
3927 }
3928
3929 /* Register platform device */
3930 ret = platform_device_register(wl->plat_dev);
3931 if (ret) {
3932 wl1271_error("couldn't register platform device");
3933 goto err_dummy_packet;
3934 }
3935 dev_set_drvdata(&wl->plat_dev->dev, wl);
3936
3937 /* Create sysfs file to control bt coex state */
3938 ret = device_create_file(&wl->plat_dev->dev, &dev_attr_bt_coex_state);
3939 if (ret < 0) {
3940 wl1271_error("failed to create sysfs file bt_coex_state");
3941 goto err_platform;
3942 }
3943
3944 /* Create sysfs file to get HW PG version */
3945 ret = device_create_file(&wl->plat_dev->dev, &dev_attr_hw_pg_ver);
3946 if (ret < 0) {
3947 wl1271_error("failed to create sysfs file hw_pg_ver");
3948 goto err_bt_coex_state;
3949 }
3950
3951 return hw;
3952
3953 err_bt_coex_state:
3954 device_remove_file(&wl->plat_dev->dev, &dev_attr_bt_coex_state);
3955
3956 err_platform:
3957 platform_device_unregister(wl->plat_dev);
3958
3959 err_dummy_packet:
3960 dev_kfree_skb(wl->dummy_packet);
3961
3962 err_aggr:
3963 free_pages((unsigned long)wl->aggr_buf, order);
3964
3965 err_hw:
3966 wl1271_debugfs_exit(wl);
3967 kfree(plat_dev);
3968
3969 err_plat_alloc:
3970 ieee80211_free_hw(hw);
3971
3972 err_hw_alloc:
3973
3974 return ERR_PTR(ret);
3975 }
3976 EXPORT_SYMBOL_GPL(wl1271_alloc_hw);
3977
3978 int wl1271_free_hw(struct wl1271 *wl)
3979 {
3980 platform_device_unregister(wl->plat_dev);
3981 dev_kfree_skb(wl->dummy_packet);
3982 free_pages((unsigned long)wl->aggr_buf,
3983 get_order(WL1271_AGGR_BUFFER_SIZE));
3984 kfree(wl->plat_dev);
3985
3986 wl1271_debugfs_exit(wl);
3987
3988 vfree(wl->fw);
3989 wl->fw = NULL;
3990 kfree(wl->nvs);
3991 wl->nvs = NULL;
3992
3993 kfree(wl->fw_status);
3994 kfree(wl->tx_res_if);
3995
3996 ieee80211_free_hw(wl->hw);
3997
3998 return 0;
3999 }
4000 EXPORT_SYMBOL_GPL(wl1271_free_hw);
4001
4002 u32 wl12xx_debug_level = DEBUG_NONE;
4003 EXPORT_SYMBOL_GPL(wl12xx_debug_level);
4004 module_param_named(debug_level, wl12xx_debug_level, uint, S_IRUSR | S_IWUSR);
4005 MODULE_PARM_DESC(debug_level, "wl12xx debugging level");
4006
4007 MODULE_LICENSE("GPL");
4008 MODULE_AUTHOR("Luciano Coelho <coelho@ti.com>");
4009 MODULE_AUTHOR("Juuso Oikarinen <juuso.oikarinen@nokia.com>");
Linux kernel - Deliverables
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