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sfc: Don't use enums as a bitmask.
[zen-stable.git] / drivers / net / wireless / wl12xx / main.c
blob610be03a198b99d05321502ee66e66963be184e8
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_configure_suspend(struct wl1271 *wl)
1354 {
1355 int ret;
1356
1357 if (wl->bss_type != BSS_TYPE_STA_BSS)
1358 return 0;
1359
1360 mutex_lock(&wl->mutex);
1361
1362 ret = wl1271_ps_elp_wakeup(wl);
1363 if (ret < 0)
1364 goto out_unlock;
1365
1366 /* enter psm if needed*/
1367 if (!test_bit(WL1271_FLAG_PSM, &wl->flags)) {
1368 DECLARE_COMPLETION_ONSTACK(compl);
1369
1370 wl->ps_compl = &compl;
1371 ret = wl1271_ps_set_mode(wl, STATION_POWER_SAVE_MODE,
1372 wl->basic_rate, true);
1373 if (ret < 0)
1374 goto out_sleep;
1375
1376 /* we must unlock here so we will be able to get events */
1377 wl1271_ps_elp_sleep(wl);
1378 mutex_unlock(&wl->mutex);
1379
1380 ret = wait_for_completion_timeout(
1381 &compl, msecs_to_jiffies(WL1271_PS_COMPLETE_TIMEOUT));
1382 if (ret <= 0) {
1383 wl1271_warning("couldn't enter ps mode!");
1384 ret = -EBUSY;
1385 goto out;
1386 }
1387
1388 /* take mutex again, and wakeup */
1389 mutex_lock(&wl->mutex);
1390
1391 ret = wl1271_ps_elp_wakeup(wl);
1392 if (ret < 0)
1393 goto out_unlock;
1394 }
1395 out_sleep:
1396 wl1271_ps_elp_sleep(wl);
1397 out_unlock:
1398 mutex_unlock(&wl->mutex);
1399 out:
1400 return ret;
1401
1402 }
1403
1404 static void wl1271_configure_resume(struct wl1271 *wl)
1405 {
1406 int ret;
1407
1408 if (wl->bss_type != BSS_TYPE_STA_BSS)
1409 return;
1410
1411 mutex_lock(&wl->mutex);
1412 ret = wl1271_ps_elp_wakeup(wl);
1413 if (ret < 0)
1414 goto out;
1415
1416 /* exit psm if it wasn't configured */
1417 if (!test_bit(WL1271_FLAG_PSM_REQUESTED, &wl->flags))
1418 wl1271_ps_set_mode(wl, STATION_ACTIVE_MODE,
1419 wl->basic_rate, true);
1420
1421 wl1271_ps_elp_sleep(wl);
1422 out:
1423 mutex_unlock(&wl->mutex);
1424 }
1425
1426 static int wl1271_op_suspend(struct ieee80211_hw *hw,
1427 struct cfg80211_wowlan *wow)
1428 {
1429 struct wl1271 *wl = hw->priv;
1430 wl1271_debug(DEBUG_MAC80211, "mac80211 suspend wow=%d", !!wow);
1431 wl->wow_enabled = !!wow;
1432 if (wl->wow_enabled) {
1433 int ret;
1434 ret = wl1271_configure_suspend(wl);
1435 if (ret < 0) {
1436 wl1271_warning("couldn't prepare device to suspend");
1437 return ret;
1438 }
1439 /* flush any remaining work */
1440 wl1271_debug(DEBUG_MAC80211, "flushing remaining works");
1441 flush_delayed_work(&wl->scan_complete_work);
1442
1443 /*
1444 * disable and re-enable interrupts in order to flush
1445 * the threaded_irq
1446 */
1447 wl1271_disable_interrupts(wl);
1448
1449 /*
1450 * set suspended flag to avoid triggering a new threaded_irq
1451 * work. no need for spinlock as interrupts are disabled.
1452 */
1453 set_bit(WL1271_FLAG_SUSPENDED, &wl->flags);
1454
1455 wl1271_enable_interrupts(wl);
1456 flush_work(&wl->tx_work);
1457 flush_delayed_work(&wl->pspoll_work);
1458 flush_delayed_work(&wl->elp_work);
1459 }
1460 return 0;
1461 }
1462
1463 static int wl1271_op_resume(struct ieee80211_hw *hw)
1464 {
1465 struct wl1271 *wl = hw->priv;
1466 wl1271_debug(DEBUG_MAC80211, "mac80211 resume wow=%d",
1467 wl->wow_enabled);
1468
1469 /*
1470 * re-enable irq_work enqueuing, and call irq_work directly if
1471 * there is a pending work.
1472 */
1473 if (wl->wow_enabled) {
1474 struct wl1271 *wl = hw->priv;
1475 unsigned long flags;
1476 bool run_irq_work = false;
1477
1478 spin_lock_irqsave(&wl->wl_lock, flags);
1479 clear_bit(WL1271_FLAG_SUSPENDED, &wl->flags);
1480 if (test_and_clear_bit(WL1271_FLAG_PENDING_WORK, &wl->flags))
1481 run_irq_work = true;
1482 spin_unlock_irqrestore(&wl->wl_lock, flags);
1483
1484 if (run_irq_work) {
1485 wl1271_debug(DEBUG_MAC80211,
1486 "run postponed irq_work directly");
1487 wl1271_irq(0, wl);
1488 wl1271_enable_interrupts(wl);
1489 }
1490
1491 wl1271_configure_resume(wl);
1492 }
1493
1494 return 0;
1495 }
1496
1497 static int wl1271_op_start(struct ieee80211_hw *hw)
1498 {
1499 wl1271_debug(DEBUG_MAC80211, "mac80211 start");
1500
1501 /*
1502 * We have to delay the booting of the hardware because
1503 * we need to know the local MAC address before downloading and
1504 * initializing the firmware. The MAC address cannot be changed
1505 * after boot, and without the proper MAC address, the firmware
1506 * will not function properly.
1507 *
1508 * The MAC address is first known when the corresponding interface
1509 * is added. That is where we will initialize the hardware.
1510 *
1511 * In addition, we currently have different firmwares for AP and managed
1512 * operation. We will know which to boot according to interface type.
1513 */
1514
1515 return 0;
1516 }
1517
1518 static void wl1271_op_stop(struct ieee80211_hw *hw)
1519 {
1520 wl1271_debug(DEBUG_MAC80211, "mac80211 stop");
1521 }
1522
1523 static int wl1271_op_add_interface(struct ieee80211_hw *hw,
1524 struct ieee80211_vif *vif)
1525 {
1526 struct wl1271 *wl = hw->priv;
1527 struct wiphy *wiphy = hw->wiphy;
1528 int retries = WL1271_BOOT_RETRIES;
1529 int ret = 0;
1530 bool booted = false;
1531
1532 wl1271_debug(DEBUG_MAC80211, "mac80211 add interface type %d mac %pM",
1533 vif->type, vif->addr);
1534
1535 mutex_lock(&wl->mutex);
1536 if (wl->vif) {
1537 wl1271_debug(DEBUG_MAC80211,
1538 "multiple vifs are not supported yet");
1539 ret = -EBUSY;
1540 goto out;
1541 }
1542
1543 /*
1544 * in some very corner case HW recovery scenarios its possible to
1545 * get here before __wl1271_op_remove_interface is complete, so
1546 * opt out if that is the case.
1547 */
1548 if (test_bit(WL1271_FLAG_IF_INITIALIZED, &wl->flags)) {
1549 ret = -EBUSY;
1550 goto out;
1551 }
1552
1553 switch (vif->type) {
1554 case NL80211_IFTYPE_STATION:
1555 wl->bss_type = BSS_TYPE_STA_BSS;
1556 wl->set_bss_type = BSS_TYPE_STA_BSS;
1557 break;
1558 case NL80211_IFTYPE_ADHOC:
1559 wl->bss_type = BSS_TYPE_IBSS;
1560 wl->set_bss_type = BSS_TYPE_STA_BSS;
1561 break;
1562 case NL80211_IFTYPE_AP:
1563 wl->bss_type = BSS_TYPE_AP_BSS;
1564 break;
1565 default:
1566 ret = -EOPNOTSUPP;
1567 goto out;
1568 }
1569
1570 memcpy(wl->mac_addr, vif->addr, ETH_ALEN);
1571
1572 if (wl->state != WL1271_STATE_OFF) {
1573 wl1271_error("cannot start because not in off state: %d",
1574 wl->state);
1575 ret = -EBUSY;
1576 goto out;
1577 }
1578
1579 while (retries) {
1580 retries--;
1581 ret = wl1271_chip_wakeup(wl);
1582 if (ret < 0)
1583 goto power_off;
1584
1585 ret = wl1271_boot(wl);
1586 if (ret < 0)
1587 goto power_off;
1588
1589 ret = wl1271_hw_init(wl);
1590 if (ret < 0)
1591 goto irq_disable;
1592
1593 booted = true;
1594 break;
1595
1596 irq_disable:
1597 mutex_unlock(&wl->mutex);
1598 /* Unlocking the mutex in the middle of handling is
1599 inherently unsafe. In this case we deem it safe to do,
1600 because we need to let any possibly pending IRQ out of
1601 the system (and while we are WL1271_STATE_OFF the IRQ
1602 work function will not do anything.) Also, any other
1603 possible concurrent operations will fail due to the
1604 current state, hence the wl1271 struct should be safe. */
1605 wl1271_disable_interrupts(wl);
1606 wl1271_flush_deferred_work(wl);
1607 cancel_work_sync(&wl->netstack_work);
1608 mutex_lock(&wl->mutex);
1609 power_off:
1610 wl1271_power_off(wl);
1611 }
1612
1613 if (!booted) {
1614 wl1271_error("firmware boot failed despite %d retries",
1615 WL1271_BOOT_RETRIES);
1616 goto out;
1617 }
1618
1619 wl->vif = vif;
1620 wl->state = WL1271_STATE_ON;
1621 set_bit(WL1271_FLAG_IF_INITIALIZED, &wl->flags);
1622 wl1271_info("firmware booted (%s)", wl->chip.fw_ver_str);
1623
1624 /* update hw/fw version info in wiphy struct */
1625 wiphy->hw_version = wl->chip.id;
1626 strncpy(wiphy->fw_version, wl->chip.fw_ver_str,
1627 sizeof(wiphy->fw_version));
1628
1629 /* Check if any quirks are needed with older fw versions */
1630 wl->quirks |= wl1271_get_fw_ver_quirks(wl);
1631
1632 /*
1633 * Now we know if 11a is supported (info from the NVS), so disable
1634 * 11a channels if not supported
1635 */
1636 if (!wl->enable_11a)
1637 wiphy->bands[IEEE80211_BAND_5GHZ]->n_channels = 0;
1638
1639 wl1271_debug(DEBUG_MAC80211, "11a is %ssupported",
1640 wl->enable_11a ? "" : "not ");
1641
1642 out:
1643 mutex_unlock(&wl->mutex);
1644
1645 mutex_lock(&wl_list_mutex);
1646 if (!ret)
1647 list_add(&wl->list, &wl_list);
1648 mutex_unlock(&wl_list_mutex);
1649
1650 return ret;
1651 }
1652
1653 static void __wl1271_op_remove_interface(struct wl1271 *wl,
1654 bool reset_tx_queues)
1655 {
1656 int i;
1657
1658 wl1271_debug(DEBUG_MAC80211, "mac80211 remove interface");
1659
1660 /* because of hardware recovery, we may get here twice */
1661 if (wl->state != WL1271_STATE_ON)
1662 return;
1663
1664 wl1271_info("down");
1665
1666 mutex_lock(&wl_list_mutex);
1667 list_del(&wl->list);
1668 mutex_unlock(&wl_list_mutex);
1669
1670 /* enable dyn ps just in case (if left on due to fw crash etc) */
1671 if (wl->bss_type == BSS_TYPE_STA_BSS)
1672 ieee80211_enable_dyn_ps(wl->vif);
1673
1674 if (wl->scan.state != WL1271_SCAN_STATE_IDLE) {
1675 wl->scan.state = WL1271_SCAN_STATE_IDLE;
1676 memset(wl->scan.scanned_ch, 0, sizeof(wl->scan.scanned_ch));
1677 wl->scan.req = NULL;
1678 ieee80211_scan_completed(wl->hw, true);
1679 }
1680
1681 /*
1682 * this must be before the cancel_work calls below, so that the work
1683 * functions don't perform further work.
1684 */
1685 wl->state = WL1271_STATE_OFF;
1686
1687 mutex_unlock(&wl->mutex);
1688
1689 wl1271_disable_interrupts(wl);
1690 wl1271_flush_deferred_work(wl);
1691 cancel_delayed_work_sync(&wl->scan_complete_work);
1692 cancel_work_sync(&wl->netstack_work);
1693 cancel_work_sync(&wl->tx_work);
1694 cancel_delayed_work_sync(&wl->pspoll_work);
1695 cancel_delayed_work_sync(&wl->elp_work);
1696
1697 mutex_lock(&wl->mutex);
1698
1699 /* let's notify MAC80211 about the remaining pending TX frames */
1700 wl1271_tx_reset(wl, reset_tx_queues);
1701 wl1271_power_off(wl);
1702
1703 memset(wl->bssid, 0, ETH_ALEN);
1704 memset(wl->ssid, 0, IW_ESSID_MAX_SIZE + 1);
1705 wl->ssid_len = 0;
1706 wl->bss_type = MAX_BSS_TYPE;
1707 wl->set_bss_type = MAX_BSS_TYPE;
1708 wl->band = IEEE80211_BAND_2GHZ;
1709
1710 wl->rx_counter = 0;
1711 wl->psm_entry_retry = 0;
1712 wl->power_level = WL1271_DEFAULT_POWER_LEVEL;
1713 wl->tx_blocks_available = 0;
1714 wl->tx_allocated_blocks = 0;
1715 wl->tx_results_count = 0;
1716 wl->tx_packets_count = 0;
1717 wl->tx_security_last_seq = 0;
1718 wl->tx_security_seq = 0;
1719 wl->time_offset = 0;
1720 wl->session_counter = 0;
1721 wl->rate_set = CONF_TX_RATE_MASK_BASIC;
1722 wl->vif = NULL;
1723 wl->filters = 0;
1724 wl1271_free_ap_keys(wl);
1725 memset(wl->ap_hlid_map, 0, sizeof(wl->ap_hlid_map));
1726 wl->ap_fw_ps_map = 0;
1727 wl->ap_ps_map = 0;
1728 wl->sched_scanning = false;
1729
1730 /*
1731 * this is performed after the cancel_work calls and the associated
1732 * mutex_lock, so that wl1271_op_add_interface does not accidentally
1733 * get executed before all these vars have been reset.
1734 */
1735 wl->flags = 0;
1736
1737 for (i = 0; i < NUM_TX_QUEUES; i++)
1738 wl->tx_blocks_freed[i] = 0;
1739
1740 wl1271_debugfs_reset(wl);
1741
1742 kfree(wl->fw_status);
1743 wl->fw_status = NULL;
1744 kfree(wl->tx_res_if);
1745 wl->tx_res_if = NULL;
1746 kfree(wl->target_mem_map);
1747 wl->target_mem_map = NULL;
1748 }
1749
1750 static void wl1271_op_remove_interface(struct ieee80211_hw *hw,
1751 struct ieee80211_vif *vif)
1752 {
1753 struct wl1271 *wl = hw->priv;
1754
1755 mutex_lock(&wl->mutex);
1756 /*
1757 * wl->vif can be null here if someone shuts down the interface
1758 * just when hardware recovery has been started.
1759 */
1760 if (wl->vif) {
1761 WARN_ON(wl->vif != vif);
1762 __wl1271_op_remove_interface(wl, true);
1763 }
1764
1765 mutex_unlock(&wl->mutex);
1766 cancel_work_sync(&wl->recovery_work);
1767 }
1768
1769 void wl1271_configure_filters(struct wl1271 *wl, unsigned int filters)
1770 {
1771 wl1271_set_default_filters(wl);
1772
1773 /* combine requested filters with current filter config */
1774 filters = wl->filters | filters;
1775
1776 wl1271_debug(DEBUG_FILTERS, "RX filters set: ");
1777
1778 if (filters & FIF_PROMISC_IN_BSS) {
1779 wl1271_debug(DEBUG_FILTERS, " - FIF_PROMISC_IN_BSS");
1780 wl->rx_config &= ~CFG_UNI_FILTER_EN;
1781 wl->rx_config |= CFG_BSSID_FILTER_EN;
1782 }
1783 if (filters & FIF_BCN_PRBRESP_PROMISC) {
1784 wl1271_debug(DEBUG_FILTERS, " - FIF_BCN_PRBRESP_PROMISC");
1785 wl->rx_config &= ~CFG_BSSID_FILTER_EN;
1786 wl->rx_config &= ~CFG_SSID_FILTER_EN;
1787 }
1788 if (filters & FIF_OTHER_BSS) {
1789 wl1271_debug(DEBUG_FILTERS, " - FIF_OTHER_BSS");
1790 wl->rx_config &= ~CFG_BSSID_FILTER_EN;
1791 }
1792 if (filters & FIF_CONTROL) {
1793 wl1271_debug(DEBUG_FILTERS, " - FIF_CONTROL");
1794 wl->rx_filter |= CFG_RX_CTL_EN;
1795 }
1796 if (filters & FIF_FCSFAIL) {
1797 wl1271_debug(DEBUG_FILTERS, " - FIF_FCSFAIL");
1798 wl->rx_filter |= CFG_RX_FCS_ERROR;
1799 }
1800 }
1801
1802 static int wl1271_dummy_join(struct wl1271 *wl)
1803 {
1804 int ret = 0;
1805 /* we need to use a dummy BSSID for now */
1806 static const u8 dummy_bssid[ETH_ALEN] = { 0x0b, 0xad, 0xde,
1807 0xad, 0xbe, 0xef };
1808
1809 memcpy(wl->bssid, dummy_bssid, ETH_ALEN);
1810
1811 /* pass through frames from all BSS */
1812 wl1271_configure_filters(wl, FIF_OTHER_BSS);
1813
1814 ret = wl1271_cmd_join(wl, wl->set_bss_type);
1815 if (ret < 0)
1816 goto out;
1817
1818 set_bit(WL1271_FLAG_JOINED, &wl->flags);
1819
1820 out:
1821 return ret;
1822 }
1823
1824 static int wl1271_join(struct wl1271 *wl, bool set_assoc)
1825 {
1826 int ret;
1827
1828 /*
1829 * One of the side effects of the JOIN command is that is clears
1830 * WPA/WPA2 keys from the chipset. Performing a JOIN while associated
1831 * to a WPA/WPA2 access point will therefore kill the data-path.
1832 * Currently the only valid scenario for JOIN during association
1833 * is on roaming, in which case we will also be given new keys.
1834 * Keep the below message for now, unless it starts bothering
1835 * users who really like to roam a lot :)
1836 */
1837 if (test_bit(WL1271_FLAG_STA_ASSOCIATED, &wl->flags))
1838 wl1271_info("JOIN while associated.");
1839
1840 if (set_assoc)
1841 set_bit(WL1271_FLAG_STA_ASSOCIATED, &wl->flags);
1842
1843 ret = wl1271_cmd_join(wl, wl->set_bss_type);
1844 if (ret < 0)
1845 goto out;
1846
1847 set_bit(WL1271_FLAG_JOINED, &wl->flags);
1848
1849 if (!test_bit(WL1271_FLAG_STA_ASSOCIATED, &wl->flags))
1850 goto out;
1851
1852 /*
1853 * The join command disable the keep-alive mode, shut down its process,
1854 * and also clear the template config, so we need to reset it all after
1855 * the join. The acx_aid starts the keep-alive process, and the order
1856 * of the commands below is relevant.
1857 */
1858 ret = wl1271_acx_keep_alive_mode(wl, true);
1859 if (ret < 0)
1860 goto out;
1861
1862 ret = wl1271_acx_aid(wl, wl->aid);
1863 if (ret < 0)
1864 goto out;
1865
1866 ret = wl1271_cmd_build_klv_null_data(wl);
1867 if (ret < 0)
1868 goto out;
1869
1870 ret = wl1271_acx_keep_alive_config(wl, CMD_TEMPL_KLV_IDX_NULL_DATA,
1871 ACX_KEEP_ALIVE_TPL_VALID);
1872 if (ret < 0)
1873 goto out;
1874
1875 out:
1876 return ret;
1877 }
1878
1879 static int wl1271_unjoin(struct wl1271 *wl)
1880 {
1881 int ret;
1882
1883 /* to stop listening to a channel, we disconnect */
1884 ret = wl1271_cmd_disconnect(wl);
1885 if (ret < 0)
1886 goto out;
1887
1888 clear_bit(WL1271_FLAG_JOINED, &wl->flags);
1889 memset(wl->bssid, 0, ETH_ALEN);
1890
1891 /* stop filtering packets based on bssid */
1892 wl1271_configure_filters(wl, FIF_OTHER_BSS);
1893
1894 out:
1895 return ret;
1896 }
1897
1898 static void wl1271_set_band_rate(struct wl1271 *wl)
1899 {
1900 if (wl->band == IEEE80211_BAND_2GHZ)
1901 wl->basic_rate_set = wl->conf.tx.basic_rate;
1902 else
1903 wl->basic_rate_set = wl->conf.tx.basic_rate_5;
1904 }
1905
1906 static int wl1271_sta_handle_idle(struct wl1271 *wl, bool idle)
1907 {
1908 int ret;
1909
1910 if (idle) {
1911 if (test_bit(WL1271_FLAG_JOINED, &wl->flags)) {
1912 ret = wl1271_unjoin(wl);
1913 if (ret < 0)
1914 goto out;
1915 }
1916 wl->rate_set = wl1271_tx_min_rate_get(wl);
1917 ret = wl1271_acx_sta_rate_policies(wl);
1918 if (ret < 0)
1919 goto out;
1920 ret = wl1271_acx_keep_alive_config(
1921 wl, CMD_TEMPL_KLV_IDX_NULL_DATA,
1922 ACX_KEEP_ALIVE_TPL_INVALID);
1923 if (ret < 0)
1924 goto out;
1925 set_bit(WL1271_FLAG_IDLE, &wl->flags);
1926 } else {
1927 /* increment the session counter */
1928 wl->session_counter++;
1929 if (wl->session_counter >= SESSION_COUNTER_MAX)
1930 wl->session_counter = 0;
1931
1932 /* The current firmware only supports sched_scan in idle */
1933 if (wl->sched_scanning) {
1934 wl1271_scan_sched_scan_stop(wl);
1935 ieee80211_sched_scan_stopped(wl->hw);
1936 }
1937
1938 ret = wl1271_dummy_join(wl);
1939 if (ret < 0)
1940 goto out;
1941 clear_bit(WL1271_FLAG_IDLE, &wl->flags);
1942 }
1943
1944 out:
1945 return ret;
1946 }
1947
1948 static int wl1271_op_config(struct ieee80211_hw *hw, u32 changed)
1949 {
1950 struct wl1271 *wl = hw->priv;
1951 struct ieee80211_conf *conf = &hw->conf;
1952 int channel, ret = 0;
1953 bool is_ap;
1954
1955 channel = ieee80211_frequency_to_channel(conf->channel->center_freq);
1956
1957 wl1271_debug(DEBUG_MAC80211, "mac80211 config ch %d psm %s power %d %s"
1958 " changed 0x%x",
1959 channel,
1960 conf->flags & IEEE80211_CONF_PS ? "on" : "off",
1961 conf->power_level,
1962 conf->flags & IEEE80211_CONF_IDLE ? "idle" : "in use",
1963 changed);
1964
1965 /*
1966 * mac80211 will go to idle nearly immediately after transmitting some
1967 * frames, such as the deauth. To make sure those frames reach the air,
1968 * wait here until the TX queue is fully flushed.
1969 */
1970 if ((changed & IEEE80211_CONF_CHANGE_IDLE) &&
1971 (conf->flags & IEEE80211_CONF_IDLE))
1972 wl1271_tx_flush(wl);
1973
1974 mutex_lock(&wl->mutex);
1975
1976 if (unlikely(wl->state == WL1271_STATE_OFF)) {
1977 /* we support configuring the channel and band while off */
1978 if ((changed & IEEE80211_CONF_CHANGE_CHANNEL)) {
1979 wl->band = conf->channel->band;
1980 wl->channel = channel;
1981 }
1982
1983 goto out;
1984 }
1985
1986 is_ap = (wl->bss_type == BSS_TYPE_AP_BSS);
1987
1988 ret = wl1271_ps_elp_wakeup(wl);
1989 if (ret < 0)
1990 goto out;
1991
1992 /* if the channel changes while joined, join again */
1993 if (changed & IEEE80211_CONF_CHANGE_CHANNEL &&
1994 ((wl->band != conf->channel->band) ||
1995 (wl->channel != channel))) {
1996 wl->band = conf->channel->band;
1997 wl->channel = channel;
1998
1999 if (!is_ap) {
2000 /*
2001 * FIXME: the mac80211 should really provide a fixed
2002 * rate to use here. for now, just use the smallest
2003 * possible rate for the band as a fixed rate for
2004 * association frames and other control messages.
2005 */
2006 if (!test_bit(WL1271_FLAG_STA_ASSOCIATED, &wl->flags))
2007 wl1271_set_band_rate(wl);
2008
2009 wl->basic_rate = wl1271_tx_min_rate_get(wl);
2010 ret = wl1271_acx_sta_rate_policies(wl);
2011 if (ret < 0)
2012 wl1271_warning("rate policy for channel "
2013 "failed %d", ret);
2014
2015 if (test_bit(WL1271_FLAG_JOINED, &wl->flags)) {
2016 ret = wl1271_join(wl, false);
2017 if (ret < 0)
2018 wl1271_warning("cmd join on channel "
2019 "failed %d", ret);
2020 }
2021 }
2022 }
2023
2024 if (changed & IEEE80211_CONF_CHANGE_IDLE && !is_ap) {
2025 ret = wl1271_sta_handle_idle(wl,
2026 conf->flags & IEEE80211_CONF_IDLE);
2027 if (ret < 0)
2028 wl1271_warning("idle mode change failed %d", ret);
2029 }
2030
2031 /*
2032 * if mac80211 changes the PSM mode, make sure the mode is not
2033 * incorrectly changed after the pspoll failure active window.
2034 */
2035 if (changed & IEEE80211_CONF_CHANGE_PS)
2036 clear_bit(WL1271_FLAG_PSPOLL_FAILURE, &wl->flags);
2037
2038 if (conf->flags & IEEE80211_CONF_PS &&
2039 !test_bit(WL1271_FLAG_PSM_REQUESTED, &wl->flags)) {
2040 set_bit(WL1271_FLAG_PSM_REQUESTED, &wl->flags);
2041
2042 /*
2043 * We enter PSM only if we're already associated.
2044 * If we're not, we'll enter it when joining an SSID,
2045 * through the bss_info_changed() hook.
2046 */
2047 if (test_bit(WL1271_FLAG_STA_ASSOCIATED, &wl->flags)) {
2048 wl1271_debug(DEBUG_PSM, "psm enabled");
2049 ret = wl1271_ps_set_mode(wl, STATION_POWER_SAVE_MODE,
2050 wl->basic_rate, true);
2051 }
2052 } else if (!(conf->flags & IEEE80211_CONF_PS) &&
2053 test_bit(WL1271_FLAG_PSM_REQUESTED, &wl->flags)) {
2054 wl1271_debug(DEBUG_PSM, "psm disabled");
2055
2056 clear_bit(WL1271_FLAG_PSM_REQUESTED, &wl->flags);
2057
2058 if (test_bit(WL1271_FLAG_PSM, &wl->flags))
2059 ret = wl1271_ps_set_mode(wl, STATION_ACTIVE_MODE,
2060 wl->basic_rate, true);
2061 }
2062
2063 if (conf->power_level != wl->power_level) {
2064 ret = wl1271_acx_tx_power(wl, conf->power_level);
2065 if (ret < 0)
2066 goto out_sleep;
2067
2068 wl->power_level = conf->power_level;
2069 }
2070
2071 out_sleep:
2072 wl1271_ps_elp_sleep(wl);
2073
2074 out:
2075 mutex_unlock(&wl->mutex);
2076
2077 return ret;
2078 }
2079
2080 struct wl1271_filter_params {
2081 bool enabled;
2082 int mc_list_length;
2083 u8 mc_list[ACX_MC_ADDRESS_GROUP_MAX][ETH_ALEN];
2084 };
2085
2086 static u64 wl1271_op_prepare_multicast(struct ieee80211_hw *hw,
2087 struct netdev_hw_addr_list *mc_list)
2088 {
2089 struct wl1271_filter_params *fp;
2090 struct netdev_hw_addr *ha;
2091 struct wl1271 *wl = hw->priv;
2092
2093 if (unlikely(wl->state == WL1271_STATE_OFF))
2094 return 0;
2095
2096 fp = kzalloc(sizeof(*fp), GFP_ATOMIC);
2097 if (!fp) {
2098 wl1271_error("Out of memory setting filters.");
2099 return 0;
2100 }
2101
2102 /* update multicast filtering parameters */
2103 fp->mc_list_length = 0;
2104 if (netdev_hw_addr_list_count(mc_list) > ACX_MC_ADDRESS_GROUP_MAX) {
2105 fp->enabled = false;
2106 } else {
2107 fp->enabled = true;
2108 netdev_hw_addr_list_for_each(ha, mc_list) {
2109 memcpy(fp->mc_list[fp->mc_list_length],
2110 ha->addr, ETH_ALEN);
2111 fp->mc_list_length++;
2112 }
2113 }
2114
2115 return (u64)(unsigned long)fp;
2116 }
2117
2118 #define WL1271_SUPPORTED_FILTERS (FIF_PROMISC_IN_BSS | \
2119 FIF_ALLMULTI | \
2120 FIF_FCSFAIL | \
2121 FIF_BCN_PRBRESP_PROMISC | \
2122 FIF_CONTROL | \
2123 FIF_OTHER_BSS)
2124
2125 static void wl1271_op_configure_filter(struct ieee80211_hw *hw,
2126 unsigned int changed,
2127 unsigned int *total, u64 multicast)
2128 {
2129 struct wl1271_filter_params *fp = (void *)(unsigned long)multicast;
2130 struct wl1271 *wl = hw->priv;
2131 int ret;
2132
2133 wl1271_debug(DEBUG_MAC80211, "mac80211 configure filter changed %x"
2134 " total %x", changed, *total);
2135
2136 mutex_lock(&wl->mutex);
2137
2138 *total &= WL1271_SUPPORTED_FILTERS;
2139 changed &= WL1271_SUPPORTED_FILTERS;
2140
2141 if (unlikely(wl->state == WL1271_STATE_OFF))
2142 goto out;
2143
2144 ret = wl1271_ps_elp_wakeup(wl);
2145 if (ret < 0)
2146 goto out;
2147
2148 if (wl->bss_type != BSS_TYPE_AP_BSS) {
2149 if (*total & FIF_ALLMULTI)
2150 ret = wl1271_acx_group_address_tbl(wl, false, NULL, 0);
2151 else if (fp)
2152 ret = wl1271_acx_group_address_tbl(wl, fp->enabled,
2153 fp->mc_list,
2154 fp->mc_list_length);
2155 if (ret < 0)
2156 goto out_sleep;
2157 }
2158
2159 /* determine, whether supported filter values have changed */
2160 if (changed == 0)
2161 goto out_sleep;
2162
2163 /* configure filters */
2164 wl->filters = *total;
2165 wl1271_configure_filters(wl, 0);
2166
2167 /* apply configured filters */
2168 ret = wl1271_acx_rx_config(wl, wl->rx_config, wl->rx_filter);
2169 if (ret < 0)
2170 goto out_sleep;
2171
2172 out_sleep:
2173 wl1271_ps_elp_sleep(wl);
2174
2175 out:
2176 mutex_unlock(&wl->mutex);
2177 kfree(fp);
2178 }
2179
2180 static int wl1271_record_ap_key(struct wl1271 *wl, u8 id, u8 key_type,
2181 u8 key_size, const u8 *key, u8 hlid, u32 tx_seq_32,
2182 u16 tx_seq_16)
2183 {
2184 struct wl1271_ap_key *ap_key;
2185 int i;
2186
2187 wl1271_debug(DEBUG_CRYPT, "record ap key id %d", (int)id);
2188
2189 if (key_size > MAX_KEY_SIZE)
2190 return -EINVAL;
2191
2192 /*
2193 * Find next free entry in ap_keys. Also check we are not replacing
2194 * an existing key.
2195 */
2196 for (i = 0; i < MAX_NUM_KEYS; i++) {
2197 if (wl->recorded_ap_keys[i] == NULL)
2198 break;
2199
2200 if (wl->recorded_ap_keys[i]->id == id) {
2201 wl1271_warning("trying to record key replacement");
2202 return -EINVAL;
2203 }
2204 }
2205
2206 if (i == MAX_NUM_KEYS)
2207 return -EBUSY;
2208
2209 ap_key = kzalloc(sizeof(*ap_key), GFP_KERNEL);
2210 if (!ap_key)
2211 return -ENOMEM;
2212
2213 ap_key->id = id;
2214 ap_key->key_type = key_type;
2215 ap_key->key_size = key_size;
2216 memcpy(ap_key->key, key, key_size);
2217 ap_key->hlid = hlid;
2218 ap_key->tx_seq_32 = tx_seq_32;
2219 ap_key->tx_seq_16 = tx_seq_16;
2220
2221 wl->recorded_ap_keys[i] = ap_key;
2222 return 0;
2223 }
2224
2225 static void wl1271_free_ap_keys(struct wl1271 *wl)
2226 {
2227 int i;
2228
2229 for (i = 0; i < MAX_NUM_KEYS; i++) {
2230 kfree(wl->recorded_ap_keys[i]);
2231 wl->recorded_ap_keys[i] = NULL;
2232 }
2233 }
2234
2235 static int wl1271_ap_init_hwenc(struct wl1271 *wl)
2236 {
2237 int i, ret = 0;
2238 struct wl1271_ap_key *key;
2239 bool wep_key_added = false;
2240
2241 for (i = 0; i < MAX_NUM_KEYS; i++) {
2242 if (wl->recorded_ap_keys[i] == NULL)
2243 break;
2244
2245 key = wl->recorded_ap_keys[i];
2246 ret = wl1271_cmd_set_ap_key(wl, KEY_ADD_OR_REPLACE,
2247 key->id, key->key_type,
2248 key->key_size, key->key,
2249 key->hlid, key->tx_seq_32,
2250 key->tx_seq_16);
2251 if (ret < 0)
2252 goto out;
2253
2254 if (key->key_type == KEY_WEP)
2255 wep_key_added = true;
2256 }
2257
2258 if (wep_key_added) {
2259 ret = wl1271_cmd_set_ap_default_wep_key(wl, wl->default_key);
2260 if (ret < 0)
2261 goto out;
2262 }
2263
2264 out:
2265 wl1271_free_ap_keys(wl);
2266 return ret;
2267 }
2268
2269 static int wl1271_set_key(struct wl1271 *wl, u16 action, u8 id, u8 key_type,
2270 u8 key_size, const u8 *key, u32 tx_seq_32,
2271 u16 tx_seq_16, struct ieee80211_sta *sta)
2272 {
2273 int ret;
2274 bool is_ap = (wl->bss_type == BSS_TYPE_AP_BSS);
2275
2276 if (is_ap) {
2277 struct wl1271_station *wl_sta;
2278 u8 hlid;
2279
2280 if (sta) {
2281 wl_sta = (struct wl1271_station *)sta->drv_priv;
2282 hlid = wl_sta->hlid;
2283 } else {
2284 hlid = WL1271_AP_BROADCAST_HLID;
2285 }
2286
2287 if (!test_bit(WL1271_FLAG_AP_STARTED, &wl->flags)) {
2288 /*
2289 * We do not support removing keys after AP shutdown.
2290 * Pretend we do to make mac80211 happy.
2291 */
2292 if (action != KEY_ADD_OR_REPLACE)
2293 return 0;
2294
2295 ret = wl1271_record_ap_key(wl, id,
2296 key_type, key_size,
2297 key, hlid, tx_seq_32,
2298 tx_seq_16);
2299 } else {
2300 ret = wl1271_cmd_set_ap_key(wl, action,
2301 id, key_type, key_size,
2302 key, hlid, tx_seq_32,
2303 tx_seq_16);
2304 }
2305
2306 if (ret < 0)
2307 return ret;
2308 } else {
2309 const u8 *addr;
2310 static const u8 bcast_addr[ETH_ALEN] = {
2311 0xff, 0xff, 0xff, 0xff, 0xff, 0xff
2312 };
2313
2314 addr = sta ? sta->addr : bcast_addr;
2315
2316 if (is_zero_ether_addr(addr)) {
2317 /* We dont support TX only encryption */
2318 return -EOPNOTSUPP;
2319 }
2320
2321 /* The wl1271 does not allow to remove unicast keys - they
2322 will be cleared automatically on next CMD_JOIN. Ignore the
2323 request silently, as we dont want the mac80211 to emit
2324 an error message. */
2325 if (action == KEY_REMOVE && !is_broadcast_ether_addr(addr))
2326 return 0;
2327
2328 ret = wl1271_cmd_set_sta_key(wl, action,
2329 id, key_type, key_size,
2330 key, addr, tx_seq_32,
2331 tx_seq_16);
2332 if (ret < 0)
2333 return ret;
2334
2335 /* the default WEP key needs to be configured at least once */
2336 if (key_type == KEY_WEP) {
2337 ret = wl1271_cmd_set_sta_default_wep_key(wl,
2338 wl->default_key);
2339 if (ret < 0)
2340 return ret;
2341 }
2342 }
2343
2344 return 0;
2345 }
2346
2347 static int wl1271_op_set_key(struct ieee80211_hw *hw, enum set_key_cmd cmd,
2348 struct ieee80211_vif *vif,
2349 struct ieee80211_sta *sta,
2350 struct ieee80211_key_conf *key_conf)
2351 {
2352 struct wl1271 *wl = hw->priv;
2353 int ret;
2354 u32 tx_seq_32 = 0;
2355 u16 tx_seq_16 = 0;
2356 u8 key_type;
2357
2358 wl1271_debug(DEBUG_MAC80211, "mac80211 set key");
2359
2360 wl1271_debug(DEBUG_CRYPT, "CMD: 0x%x sta: %p", cmd, sta);
2361 wl1271_debug(DEBUG_CRYPT, "Key: algo:0x%x, id:%d, len:%d flags 0x%x",
2362 key_conf->cipher, key_conf->keyidx,
2363 key_conf->keylen, key_conf->flags);
2364 wl1271_dump(DEBUG_CRYPT, "KEY: ", key_conf->key, key_conf->keylen);
2365
2366 mutex_lock(&wl->mutex);
2367
2368 if (unlikely(wl->state == WL1271_STATE_OFF)) {
2369 ret = -EAGAIN;
2370 goto out_unlock;
2371 }
2372
2373 ret = wl1271_ps_elp_wakeup(wl);
2374 if (ret < 0)
2375 goto out_unlock;
2376
2377 switch (key_conf->cipher) {
2378 case WLAN_CIPHER_SUITE_WEP40:
2379 case WLAN_CIPHER_SUITE_WEP104:
2380 key_type = KEY_WEP;
2381
2382 key_conf->hw_key_idx = key_conf->keyidx;
2383 break;
2384 case WLAN_CIPHER_SUITE_TKIP:
2385 key_type = KEY_TKIP;
2386
2387 key_conf->hw_key_idx = key_conf->keyidx;
2388 tx_seq_32 = WL1271_TX_SECURITY_HI32(wl->tx_security_seq);
2389 tx_seq_16 = WL1271_TX_SECURITY_LO16(wl->tx_security_seq);
2390 break;
2391 case WLAN_CIPHER_SUITE_CCMP:
2392 key_type = KEY_AES;
2393
2394 key_conf->flags |= IEEE80211_KEY_FLAG_GENERATE_IV;
2395 tx_seq_32 = WL1271_TX_SECURITY_HI32(wl->tx_security_seq);
2396 tx_seq_16 = WL1271_TX_SECURITY_LO16(wl->tx_security_seq);
2397 break;
2398 case WL1271_CIPHER_SUITE_GEM:
2399 key_type = KEY_GEM;
2400 tx_seq_32 = WL1271_TX_SECURITY_HI32(wl->tx_security_seq);
2401 tx_seq_16 = WL1271_TX_SECURITY_LO16(wl->tx_security_seq);
2402 break;
2403 default:
2404 wl1271_error("Unknown key algo 0x%x", key_conf->cipher);
2405
2406 ret = -EOPNOTSUPP;
2407 goto out_sleep;
2408 }
2409
2410 switch (cmd) {
2411 case SET_KEY:
2412 ret = wl1271_set_key(wl, KEY_ADD_OR_REPLACE,
2413 key_conf->keyidx, key_type,
2414 key_conf->keylen, key_conf->key,
2415 tx_seq_32, tx_seq_16, sta);
2416 if (ret < 0) {
2417 wl1271_error("Could not add or replace key");
2418 goto out_sleep;
2419 }
2420 break;
2421
2422 case DISABLE_KEY:
2423 ret = wl1271_set_key(wl, KEY_REMOVE,
2424 key_conf->keyidx, key_type,
2425 key_conf->keylen, key_conf->key,
2426 0, 0, sta);
2427 if (ret < 0) {
2428 wl1271_error("Could not remove key");
2429 goto out_sleep;
2430 }
2431 break;
2432
2433 default:
2434 wl1271_error("Unsupported key cmd 0x%x", cmd);
2435 ret = -EOPNOTSUPP;
2436 break;
2437 }
2438
2439 out_sleep:
2440 wl1271_ps_elp_sleep(wl);
2441
2442 out_unlock:
2443 mutex_unlock(&wl->mutex);
2444
2445 return ret;
2446 }
2447
2448 static int wl1271_op_hw_scan(struct ieee80211_hw *hw,
2449 struct ieee80211_vif *vif,
2450 struct cfg80211_scan_request *req)
2451 {
2452 struct wl1271 *wl = hw->priv;
2453 int ret;
2454 u8 *ssid = NULL;
2455 size_t len = 0;
2456
2457 wl1271_debug(DEBUG_MAC80211, "mac80211 hw scan");
2458
2459 if (req->n_ssids) {
2460 ssid = req->ssids[0].ssid;
2461 len = req->ssids[0].ssid_len;
2462 }
2463
2464 mutex_lock(&wl->mutex);
2465
2466 if (wl->state == WL1271_STATE_OFF) {
2467 /*
2468 * We cannot return -EBUSY here because cfg80211 will expect
2469 * a call to ieee80211_scan_completed if we do - in this case
2470 * there won't be any call.
2471 */
2472 ret = -EAGAIN;
2473 goto out;
2474 }
2475
2476 ret = wl1271_ps_elp_wakeup(wl);
2477 if (ret < 0)
2478 goto out;
2479
2480 ret = wl1271_scan(hw->priv, ssid, len, req);
2481
2482 wl1271_ps_elp_sleep(wl);
2483
2484 out:
2485 mutex_unlock(&wl->mutex);
2486
2487 return ret;
2488 }
2489
2490 static int wl1271_op_sched_scan_start(struct ieee80211_hw *hw,
2491 struct ieee80211_vif *vif,
2492 struct cfg80211_sched_scan_request *req,
2493 struct ieee80211_sched_scan_ies *ies)
2494 {
2495 struct wl1271 *wl = hw->priv;
2496 int ret;
2497
2498 wl1271_debug(DEBUG_MAC80211, "wl1271_op_sched_scan_start");
2499
2500 mutex_lock(&wl->mutex);
2501
2502 ret = wl1271_ps_elp_wakeup(wl);
2503 if (ret < 0)
2504 goto out;
2505
2506 ret = wl1271_scan_sched_scan_config(wl, req, ies);
2507 if (ret < 0)
2508 goto out_sleep;
2509
2510 ret = wl1271_scan_sched_scan_start(wl);
2511 if (ret < 0)
2512 goto out_sleep;
2513
2514 wl->sched_scanning = true;
2515
2516 out_sleep:
2517 wl1271_ps_elp_sleep(wl);
2518 out:
2519 mutex_unlock(&wl->mutex);
2520 return ret;
2521 }
2522
2523 static void wl1271_op_sched_scan_stop(struct ieee80211_hw *hw,
2524 struct ieee80211_vif *vif)
2525 {
2526 struct wl1271 *wl = hw->priv;
2527 int ret;
2528
2529 wl1271_debug(DEBUG_MAC80211, "wl1271_op_sched_scan_stop");
2530
2531 mutex_lock(&wl->mutex);
2532
2533 ret = wl1271_ps_elp_wakeup(wl);
2534 if (ret < 0)
2535 goto out;
2536
2537 wl1271_scan_sched_scan_stop(wl);
2538
2539 wl1271_ps_elp_sleep(wl);
2540 out:
2541 mutex_unlock(&wl->mutex);
2542 }
2543
2544 static int wl1271_op_set_frag_threshold(struct ieee80211_hw *hw, u32 value)
2545 {
2546 struct wl1271 *wl = hw->priv;
2547 int ret = 0;
2548
2549 mutex_lock(&wl->mutex);
2550
2551 if (unlikely(wl->state == WL1271_STATE_OFF)) {
2552 ret = -EAGAIN;
2553 goto out;
2554 }
2555
2556 ret = wl1271_ps_elp_wakeup(wl);
2557 if (ret < 0)
2558 goto out;
2559
2560 ret = wl1271_acx_frag_threshold(wl, value);
2561 if (ret < 0)
2562 wl1271_warning("wl1271_op_set_frag_threshold failed: %d", ret);
2563
2564 wl1271_ps_elp_sleep(wl);
2565
2566 out:
2567 mutex_unlock(&wl->mutex);
2568
2569 return ret;
2570 }
2571
2572 static int wl1271_op_set_rts_threshold(struct ieee80211_hw *hw, u32 value)
2573 {
2574 struct wl1271 *wl = hw->priv;
2575 int ret = 0;
2576
2577 mutex_lock(&wl->mutex);
2578
2579 if (unlikely(wl->state == WL1271_STATE_OFF)) {
2580 ret = -EAGAIN;
2581 goto out;
2582 }
2583
2584 ret = wl1271_ps_elp_wakeup(wl);
2585 if (ret < 0)
2586 goto out;
2587
2588 ret = wl1271_acx_rts_threshold(wl, value);
2589 if (ret < 0)
2590 wl1271_warning("wl1271_op_set_rts_threshold failed: %d", ret);
2591
2592 wl1271_ps_elp_sleep(wl);
2593
2594 out:
2595 mutex_unlock(&wl->mutex);
2596
2597 return ret;
2598 }
2599
2600 static int wl1271_ssid_set(struct wl1271 *wl, struct sk_buff *skb,
2601 int offset)
2602 {
2603 u8 ssid_len;
2604 const u8 *ptr = cfg80211_find_ie(WLAN_EID_SSID, skb->data + offset,
2605 skb->len - offset);
2606
2607 if (!ptr) {
2608 wl1271_error("No SSID in IEs!");
2609 return -ENOENT;
2610 }
2611
2612 ssid_len = ptr[1];
2613 if (ssid_len > IEEE80211_MAX_SSID_LEN) {
2614 wl1271_error("SSID is too long!");
2615 return -EINVAL;
2616 }
2617
2618 wl->ssid_len = ssid_len;
2619 memcpy(wl->ssid, ptr+2, ssid_len);
2620 return 0;
2621 }
2622
2623 static int wl1271_bss_erp_info_changed(struct wl1271 *wl,
2624 struct ieee80211_bss_conf *bss_conf,
2625 u32 changed)
2626 {
2627 int ret = 0;
2628
2629 if (changed & BSS_CHANGED_ERP_SLOT) {
2630 if (bss_conf->use_short_slot)
2631 ret = wl1271_acx_slot(wl, SLOT_TIME_SHORT);
2632 else
2633 ret = wl1271_acx_slot(wl, SLOT_TIME_LONG);
2634 if (ret < 0) {
2635 wl1271_warning("Set slot time failed %d", ret);
2636 goto out;
2637 }
2638 }
2639
2640 if (changed & BSS_CHANGED_ERP_PREAMBLE) {
2641 if (bss_conf->use_short_preamble)
2642 wl1271_acx_set_preamble(wl, ACX_PREAMBLE_SHORT);
2643 else
2644 wl1271_acx_set_preamble(wl, ACX_PREAMBLE_LONG);
2645 }
2646
2647 if (changed & BSS_CHANGED_ERP_CTS_PROT) {
2648 if (bss_conf->use_cts_prot)
2649 ret = wl1271_acx_cts_protect(wl, CTSPROTECT_ENABLE);
2650 else
2651 ret = wl1271_acx_cts_protect(wl, CTSPROTECT_DISABLE);
2652 if (ret < 0) {
2653 wl1271_warning("Set ctsprotect failed %d", ret);
2654 goto out;
2655 }
2656 }
2657
2658 out:
2659 return ret;
2660 }
2661
2662 static int wl1271_bss_beacon_info_changed(struct wl1271 *wl,
2663 struct ieee80211_vif *vif,
2664 struct ieee80211_bss_conf *bss_conf,
2665 u32 changed)
2666 {
2667 bool is_ap = (wl->bss_type == BSS_TYPE_AP_BSS);
2668 int ret = 0;
2669
2670 if ((changed & BSS_CHANGED_BEACON_INT)) {
2671 wl1271_debug(DEBUG_MASTER, "beacon interval updated: %d",
2672 bss_conf->beacon_int);
2673
2674 wl->beacon_int = bss_conf->beacon_int;
2675 }
2676
2677 if ((changed & BSS_CHANGED_BEACON)) {
2678 struct ieee80211_hdr *hdr;
2679 int ieoffset = offsetof(struct ieee80211_mgmt,
2680 u.beacon.variable);
2681 struct sk_buff *beacon = ieee80211_beacon_get(wl->hw, vif);
2682 u16 tmpl_id;
2683
2684 if (!beacon)
2685 goto out;
2686
2687 wl1271_debug(DEBUG_MASTER, "beacon updated");
2688
2689 ret = wl1271_ssid_set(wl, beacon, ieoffset);
2690 if (ret < 0) {
2691 dev_kfree_skb(beacon);
2692 goto out;
2693 }
2694 tmpl_id = is_ap ? CMD_TEMPL_AP_BEACON :
2695 CMD_TEMPL_BEACON;
2696 ret = wl1271_cmd_template_set(wl, tmpl_id,
2697 beacon->data,
2698 beacon->len, 0,
2699 wl1271_tx_min_rate_get(wl));
2700 if (ret < 0) {
2701 dev_kfree_skb(beacon);
2702 goto out;
2703 }
2704
2705 hdr = (struct ieee80211_hdr *) beacon->data;
2706 hdr->frame_control = cpu_to_le16(IEEE80211_FTYPE_MGMT |
2707 IEEE80211_STYPE_PROBE_RESP);
2708
2709 tmpl_id = is_ap ? CMD_TEMPL_AP_PROBE_RESPONSE :
2710 CMD_TEMPL_PROBE_RESPONSE;
2711 ret = wl1271_cmd_template_set(wl,
2712 tmpl_id,
2713 beacon->data,
2714 beacon->len, 0,
2715 wl1271_tx_min_rate_get(wl));
2716 dev_kfree_skb(beacon);
2717 if (ret < 0)
2718 goto out;
2719 }
2720
2721 out:
2722 return ret;
2723 }
2724
2725 /* AP mode changes */
2726 static void wl1271_bss_info_changed_ap(struct wl1271 *wl,
2727 struct ieee80211_vif *vif,
2728 struct ieee80211_bss_conf *bss_conf,
2729 u32 changed)
2730 {
2731 int ret = 0;
2732
2733 if ((changed & BSS_CHANGED_BASIC_RATES)) {
2734 u32 rates = bss_conf->basic_rates;
2735
2736 wl->basic_rate_set = wl1271_tx_enabled_rates_get(wl, rates);
2737 wl->basic_rate = wl1271_tx_min_rate_get(wl);
2738
2739 ret = wl1271_init_ap_rates(wl);
2740 if (ret < 0) {
2741 wl1271_error("AP rate policy change failed %d", ret);
2742 goto out;
2743 }
2744
2745 ret = wl1271_ap_init_templates(wl);
2746 if (ret < 0)
2747 goto out;
2748 }
2749
2750 ret = wl1271_bss_beacon_info_changed(wl, vif, bss_conf, changed);
2751 if (ret < 0)
2752 goto out;
2753
2754 if ((changed & BSS_CHANGED_BEACON_ENABLED)) {
2755 if (bss_conf->enable_beacon) {
2756 if (!test_bit(WL1271_FLAG_AP_STARTED, &wl->flags)) {
2757 ret = wl1271_cmd_start_bss(wl);
2758 if (ret < 0)
2759 goto out;
2760
2761 set_bit(WL1271_FLAG_AP_STARTED, &wl->flags);
2762 wl1271_debug(DEBUG_AP, "started AP");
2763
2764 ret = wl1271_ap_init_hwenc(wl);
2765 if (ret < 0)
2766 goto out;
2767 }
2768 } else {
2769 if (test_bit(WL1271_FLAG_AP_STARTED, &wl->flags)) {
2770 ret = wl1271_cmd_stop_bss(wl);
2771 if (ret < 0)
2772 goto out;
2773
2774 clear_bit(WL1271_FLAG_AP_STARTED, &wl->flags);
2775 wl1271_debug(DEBUG_AP, "stopped AP");
2776 }
2777 }
2778 }
2779
2780 if (changed & BSS_CHANGED_IBSS) {
2781 wl1271_debug(DEBUG_ADHOC, "ibss_joined: %d",
2782 bss_conf->ibss_joined);
2783
2784 if (bss_conf->ibss_joined) {
2785 u32 rates = bss_conf->basic_rates;
2786 wl->basic_rate_set = wl1271_tx_enabled_rates_get(wl,
2787 rates);
2788 wl->basic_rate = wl1271_tx_min_rate_get(wl);
2789
2790 /* by default, use 11b rates */
2791 wl->rate_set = CONF_TX_IBSS_DEFAULT_RATES;
2792 ret = wl1271_acx_sta_rate_policies(wl);
2793 if (ret < 0)
2794 goto out;
2795 }
2796 }
2797
2798 ret = wl1271_bss_erp_info_changed(wl, bss_conf, changed);
2799 if (ret < 0)
2800 goto out;
2801 out:
2802 return;
2803 }
2804
2805 /* STA/IBSS mode changes */
2806 static void wl1271_bss_info_changed_sta(struct wl1271 *wl,
2807 struct ieee80211_vif *vif,
2808 struct ieee80211_bss_conf *bss_conf,
2809 u32 changed)
2810 {
2811 bool do_join = false, set_assoc = false;
2812 bool is_ibss = (wl->bss_type == BSS_TYPE_IBSS);
2813 u32 sta_rate_set = 0;
2814 int ret;
2815 struct ieee80211_sta *sta;
2816 bool sta_exists = false;
2817 struct ieee80211_sta_ht_cap sta_ht_cap;
2818
2819 if (is_ibss) {
2820 ret = wl1271_bss_beacon_info_changed(wl, vif, bss_conf,
2821 changed);
2822 if (ret < 0)
2823 goto out;
2824 }
2825
2826 if ((changed & BSS_CHANGED_BEACON_INT) && is_ibss)
2827 do_join = true;
2828
2829 /* Need to update the SSID (for filtering etc) */
2830 if ((changed & BSS_CHANGED_BEACON) && is_ibss)
2831 do_join = true;
2832
2833 if ((changed & BSS_CHANGED_BEACON_ENABLED) && is_ibss) {
2834 wl1271_debug(DEBUG_ADHOC, "ad-hoc beaconing: %s",
2835 bss_conf->enable_beacon ? "enabled" : "disabled");
2836
2837 if (bss_conf->enable_beacon)
2838 wl->set_bss_type = BSS_TYPE_IBSS;
2839 else
2840 wl->set_bss_type = BSS_TYPE_STA_BSS;
2841 do_join = true;
2842 }
2843
2844 if ((changed & BSS_CHANGED_CQM)) {
2845 bool enable = false;
2846 if (bss_conf->cqm_rssi_thold)
2847 enable = true;
2848 ret = wl1271_acx_rssi_snr_trigger(wl, enable,
2849 bss_conf->cqm_rssi_thold,
2850 bss_conf->cqm_rssi_hyst);
2851 if (ret < 0)
2852 goto out;
2853 wl->rssi_thold = bss_conf->cqm_rssi_thold;
2854 }
2855
2856 if ((changed & BSS_CHANGED_BSSID) &&
2857 /*
2858 * Now we know the correct bssid, so we send a new join command
2859 * and enable the BSSID filter
2860 */
2861 memcmp(wl->bssid, bss_conf->bssid, ETH_ALEN)) {
2862 memcpy(wl->bssid, bss_conf->bssid, ETH_ALEN);
2863
2864 if (!is_zero_ether_addr(wl->bssid)) {
2865 ret = wl1271_cmd_build_null_data(wl);
2866 if (ret < 0)
2867 goto out;
2868
2869 ret = wl1271_build_qos_null_data(wl);
2870 if (ret < 0)
2871 goto out;
2872
2873 /* filter out all packets not from this BSSID */
2874 wl1271_configure_filters(wl, 0);
2875
2876 /* Need to update the BSSID (for filtering etc) */
2877 do_join = true;
2878 }
2879 }
2880
2881 rcu_read_lock();
2882 sta = ieee80211_find_sta(vif, bss_conf->bssid);
2883 if (sta) {
2884 /* save the supp_rates of the ap */
2885 sta_rate_set = sta->supp_rates[wl->hw->conf.channel->band];
2886 if (sta->ht_cap.ht_supported)
2887 sta_rate_set |=
2888 (sta->ht_cap.mcs.rx_mask[0] << HW_HT_RATES_OFFSET);
2889 sta_ht_cap = sta->ht_cap;
2890 sta_exists = true;
2891 }
2892 rcu_read_unlock();
2893
2894 if (sta_exists) {
2895 /* handle new association with HT and HT information change */
2896 if ((changed & BSS_CHANGED_HT) &&
2897 (bss_conf->channel_type != NL80211_CHAN_NO_HT)) {
2898 ret = wl1271_acx_set_ht_capabilities(wl, &sta_ht_cap,
2899 true);
2900 if (ret < 0) {
2901 wl1271_warning("Set ht cap true failed %d",
2902 ret);
2903 goto out;
2904 }
2905 ret = wl1271_acx_set_ht_information(wl,
2906 bss_conf->ht_operation_mode);
2907 if (ret < 0) {
2908 wl1271_warning("Set ht information failed %d",
2909 ret);
2910 goto out;
2911 }
2912 }
2913 /* handle new association without HT and disassociation */
2914 else if (changed & BSS_CHANGED_ASSOC) {
2915 ret = wl1271_acx_set_ht_capabilities(wl, &sta_ht_cap,
2916 false);
2917 if (ret < 0) {
2918 wl1271_warning("Set ht cap false failed %d",
2919 ret);
2920 goto out;
2921 }
2922 }
2923 }
2924
2925 if ((changed & BSS_CHANGED_ASSOC)) {
2926 if (bss_conf->assoc) {
2927 u32 rates;
2928 int ieoffset;
2929 wl->aid = bss_conf->aid;
2930 set_assoc = true;
2931
2932 wl->ps_poll_failures = 0;
2933
2934 /*
2935 * use basic rates from AP, and determine lowest rate
2936 * to use with control frames.
2937 */
2938 rates = bss_conf->basic_rates;
2939 wl->basic_rate_set = wl1271_tx_enabled_rates_get(wl,
2940 rates);
2941 wl->basic_rate = wl1271_tx_min_rate_get(wl);
2942 if (sta_rate_set)
2943 wl->rate_set = wl1271_tx_enabled_rates_get(wl,
2944 sta_rate_set);
2945 ret = wl1271_acx_sta_rate_policies(wl);
2946 if (ret < 0)
2947 goto out;
2948
2949 /*
2950 * with wl1271, we don't need to update the
2951 * beacon_int and dtim_period, because the firmware
2952 * updates it by itself when the first beacon is
2953 * received after a join.
2954 */
2955 ret = wl1271_cmd_build_ps_poll(wl, wl->aid);
2956 if (ret < 0)
2957 goto out;
2958
2959 /*
2960 * Get a template for hardware connection maintenance
2961 */
2962 dev_kfree_skb(wl->probereq);
2963 wl->probereq = wl1271_cmd_build_ap_probe_req(wl, NULL);
2964 ieoffset = offsetof(struct ieee80211_mgmt,
2965 u.probe_req.variable);
2966 wl1271_ssid_set(wl, wl->probereq, ieoffset);
2967
2968 /* enable the connection monitoring feature */
2969 ret = wl1271_acx_conn_monit_params(wl, true);
2970 if (ret < 0)
2971 goto out;
2972
2973 /* If we want to go in PSM but we're not there yet */
2974 if (test_bit(WL1271_FLAG_PSM_REQUESTED, &wl->flags) &&
2975 !test_bit(WL1271_FLAG_PSM, &wl->flags)) {
2976 enum wl1271_cmd_ps_mode mode;
2977
2978 mode = STATION_POWER_SAVE_MODE;
2979 ret = wl1271_ps_set_mode(wl, mode,
2980 wl->basic_rate,
2981 true);
2982 if (ret < 0)
2983 goto out;
2984 }
2985 } else {
2986 /* use defaults when not associated */
2987 bool was_assoc =
2988 !!test_and_clear_bit(WL1271_FLAG_STA_ASSOCIATED,
2989 &wl->flags);
2990 clear_bit(WL1271_FLAG_STA_STATE_SENT, &wl->flags);
2991 wl->aid = 0;
2992
2993 /* free probe-request template */
2994 dev_kfree_skb(wl->probereq);
2995 wl->probereq = NULL;
2996
2997 /* re-enable dynamic ps - just in case */
2998 ieee80211_enable_dyn_ps(wl->vif);
2999
3000 /* revert back to minimum rates for the current band */
3001 wl1271_set_band_rate(wl);
3002 wl->basic_rate = wl1271_tx_min_rate_get(wl);
3003 ret = wl1271_acx_sta_rate_policies(wl);
3004 if (ret < 0)
3005 goto out;
3006
3007 /* disable connection monitor features */
3008 ret = wl1271_acx_conn_monit_params(wl, false);
3009
3010 /* Disable the keep-alive feature */
3011 ret = wl1271_acx_keep_alive_mode(wl, false);
3012 if (ret < 0)
3013 goto out;
3014
3015 /* restore the bssid filter and go to dummy bssid */
3016 if (was_assoc) {
3017 wl1271_unjoin(wl);
3018 wl1271_dummy_join(wl);
3019 }
3020 }
3021 }
3022
3023 ret = wl1271_bss_erp_info_changed(wl, bss_conf, changed);
3024 if (ret < 0)
3025 goto out;
3026
3027 if (changed & BSS_CHANGED_ARP_FILTER) {
3028 __be32 addr = bss_conf->arp_addr_list[0];
3029 WARN_ON(wl->bss_type != BSS_TYPE_STA_BSS);
3030
3031 if (bss_conf->arp_addr_cnt == 1 &&
3032 bss_conf->arp_filter_enabled) {
3033 /*
3034 * The template should have been configured only upon
3035 * association. however, it seems that the correct ip
3036 * isn't being set (when sending), so we have to
3037 * reconfigure the template upon every ip change.
3038 */
3039 ret = wl1271_cmd_build_arp_rsp(wl, addr);
3040 if (ret < 0) {
3041 wl1271_warning("build arp rsp failed: %d", ret);
3042 goto out;
3043 }
3044
3045 ret = wl1271_acx_arp_ip_filter(wl,
3046 ACX_ARP_FILTER_ARP_FILTERING,
3047 addr);
3048 } else
3049 ret = wl1271_acx_arp_ip_filter(wl, 0, addr);
3050
3051 if (ret < 0)
3052 goto out;
3053 }
3054
3055 if (do_join) {
3056 ret = wl1271_join(wl, set_assoc);
3057 if (ret < 0) {
3058 wl1271_warning("cmd join failed %d", ret);
3059 goto out;
3060 }
3061 }
3062
3063 out:
3064 return;
3065 }
3066
3067 static void wl1271_op_bss_info_changed(struct ieee80211_hw *hw,
3068 struct ieee80211_vif *vif,
3069 struct ieee80211_bss_conf *bss_conf,
3070 u32 changed)
3071 {
3072 struct wl1271 *wl = hw->priv;
3073 bool is_ap = (wl->bss_type == BSS_TYPE_AP_BSS);
3074 int ret;
3075
3076 wl1271_debug(DEBUG_MAC80211, "mac80211 bss info changed 0x%x",
3077 (int)changed);
3078
3079 mutex_lock(&wl->mutex);
3080
3081 if (unlikely(wl->state == WL1271_STATE_OFF))
3082 goto out;
3083
3084 ret = wl1271_ps_elp_wakeup(wl);
3085 if (ret < 0)
3086 goto out;
3087
3088 if (is_ap)
3089 wl1271_bss_info_changed_ap(wl, vif, bss_conf, changed);
3090 else
3091 wl1271_bss_info_changed_sta(wl, vif, bss_conf, changed);
3092
3093 wl1271_ps_elp_sleep(wl);
3094
3095 out:
3096 mutex_unlock(&wl->mutex);
3097 }
3098
3099 static int wl1271_op_conf_tx(struct ieee80211_hw *hw, u16 queue,
3100 const struct ieee80211_tx_queue_params *params)
3101 {
3102 struct wl1271 *wl = hw->priv;
3103 u8 ps_scheme;
3104 int ret = 0;
3105
3106 mutex_lock(&wl->mutex);
3107
3108 wl1271_debug(DEBUG_MAC80211, "mac80211 conf tx %d", queue);
3109
3110 if (params->uapsd)
3111 ps_scheme = CONF_PS_SCHEME_UPSD_TRIGGER;
3112 else
3113 ps_scheme = CONF_PS_SCHEME_LEGACY;
3114
3115 if (wl->state == WL1271_STATE_OFF) {
3116 /*
3117 * If the state is off, the parameters will be recorded and
3118 * configured on init. This happens in AP-mode.
3119 */
3120 struct conf_tx_ac_category *conf_ac =
3121 &wl->conf.tx.ac_conf[wl1271_tx_get_queue(queue)];
3122 struct conf_tx_tid *conf_tid =
3123 &wl->conf.tx.tid_conf[wl1271_tx_get_queue(queue)];
3124
3125 conf_ac->ac = wl1271_tx_get_queue(queue);
3126 conf_ac->cw_min = (u8)params->cw_min;
3127 conf_ac->cw_max = params->cw_max;
3128 conf_ac->aifsn = params->aifs;
3129 conf_ac->tx_op_limit = params->txop << 5;
3130
3131 conf_tid->queue_id = wl1271_tx_get_queue(queue);
3132 conf_tid->channel_type = CONF_CHANNEL_TYPE_EDCF;
3133 conf_tid->tsid = wl1271_tx_get_queue(queue);
3134 conf_tid->ps_scheme = ps_scheme;
3135 conf_tid->ack_policy = CONF_ACK_POLICY_LEGACY;
3136 conf_tid->apsd_conf[0] = 0;
3137 conf_tid->apsd_conf[1] = 0;
3138 goto out;
3139 }
3140
3141 ret = wl1271_ps_elp_wakeup(wl);
3142 if (ret < 0)
3143 goto out;
3144
3145 /*
3146 * the txop is confed in units of 32us by the mac80211,
3147 * we need us
3148 */
3149 ret = wl1271_acx_ac_cfg(wl, wl1271_tx_get_queue(queue),
3150 params->cw_min, params->cw_max,
3151 params->aifs, params->txop << 5);
3152 if (ret < 0)
3153 goto out_sleep;
3154
3155 ret = wl1271_acx_tid_cfg(wl, wl1271_tx_get_queue(queue),
3156 CONF_CHANNEL_TYPE_EDCF,
3157 wl1271_tx_get_queue(queue),
3158 ps_scheme, CONF_ACK_POLICY_LEGACY,
3159 0, 0);
3160
3161 out_sleep:
3162 wl1271_ps_elp_sleep(wl);
3163
3164 out:
3165 mutex_unlock(&wl->mutex);
3166
3167 return ret;
3168 }
3169
3170 static u64 wl1271_op_get_tsf(struct ieee80211_hw *hw)
3171 {
3172
3173 struct wl1271 *wl = hw->priv;
3174 u64 mactime = ULLONG_MAX;
3175 int ret;
3176
3177 wl1271_debug(DEBUG_MAC80211, "mac80211 get tsf");
3178
3179 mutex_lock(&wl->mutex);
3180
3181 if (unlikely(wl->state == WL1271_STATE_OFF))
3182 goto out;
3183
3184 ret = wl1271_ps_elp_wakeup(wl);
3185 if (ret < 0)
3186 goto out;
3187
3188 ret = wl1271_acx_tsf_info(wl, &mactime);
3189 if (ret < 0)
3190 goto out_sleep;
3191
3192 out_sleep:
3193 wl1271_ps_elp_sleep(wl);
3194
3195 out:
3196 mutex_unlock(&wl->mutex);
3197 return mactime;
3198 }
3199
3200 static int wl1271_op_get_survey(struct ieee80211_hw *hw, int idx,
3201 struct survey_info *survey)
3202 {
3203 struct wl1271 *wl = hw->priv;
3204 struct ieee80211_conf *conf = &hw->conf;
3205
3206 if (idx != 0)
3207 return -ENOENT;
3208
3209 survey->channel = conf->channel;
3210 survey->filled = SURVEY_INFO_NOISE_DBM;
3211 survey->noise = wl->noise;
3212
3213 return 0;
3214 }
3215
3216 static int wl1271_allocate_sta(struct wl1271 *wl,
3217 struct ieee80211_sta *sta,
3218 u8 *hlid)
3219 {
3220 struct wl1271_station *wl_sta;
3221 int id;
3222
3223 id = find_first_zero_bit(wl->ap_hlid_map, AP_MAX_STATIONS);
3224 if (id >= AP_MAX_STATIONS) {
3225 wl1271_warning("could not allocate HLID - too much stations");
3226 return -EBUSY;
3227 }
3228
3229 wl_sta = (struct wl1271_station *)sta->drv_priv;
3230 __set_bit(id, wl->ap_hlid_map);
3231 wl_sta->hlid = WL1271_AP_STA_HLID_START + id;
3232 *hlid = wl_sta->hlid;
3233 memcpy(wl->links[wl_sta->hlid].addr, sta->addr, ETH_ALEN);
3234 return 0;
3235 }
3236
3237 static void wl1271_free_sta(struct wl1271 *wl, u8 hlid)
3238 {
3239 int id = hlid - WL1271_AP_STA_HLID_START;
3240
3241 if (WARN_ON(!test_bit(id, wl->ap_hlid_map)))
3242 return;
3243
3244 __clear_bit(id, wl->ap_hlid_map);
3245 memset(wl->links[hlid].addr, 0, ETH_ALEN);
3246 wl1271_tx_reset_link_queues(wl, hlid);
3247 __clear_bit(hlid, &wl->ap_ps_map);
3248 __clear_bit(hlid, (unsigned long *)&wl->ap_fw_ps_map);
3249 }
3250
3251 static int wl1271_op_sta_add(struct ieee80211_hw *hw,
3252 struct ieee80211_vif *vif,
3253 struct ieee80211_sta *sta)
3254 {
3255 struct wl1271 *wl = hw->priv;
3256 int ret = 0;
3257 u8 hlid;
3258
3259 mutex_lock(&wl->mutex);
3260
3261 if (unlikely(wl->state == WL1271_STATE_OFF))
3262 goto out;
3263
3264 if (wl->bss_type != BSS_TYPE_AP_BSS)
3265 goto out;
3266
3267 wl1271_debug(DEBUG_MAC80211, "mac80211 add sta %d", (int)sta->aid);
3268
3269 ret = wl1271_allocate_sta(wl, sta, &hlid);
3270 if (ret < 0)
3271 goto out;
3272
3273 ret = wl1271_ps_elp_wakeup(wl);
3274 if (ret < 0)
3275 goto out_free_sta;
3276
3277 ret = wl1271_cmd_add_sta(wl, sta, hlid);
3278 if (ret < 0)
3279 goto out_sleep;
3280
3281 out_sleep:
3282 wl1271_ps_elp_sleep(wl);
3283
3284 out_free_sta:
3285 if (ret < 0)
3286 wl1271_free_sta(wl, hlid);
3287
3288 out:
3289 mutex_unlock(&wl->mutex);
3290 return ret;
3291 }
3292
3293 static int wl1271_op_sta_remove(struct ieee80211_hw *hw,
3294 struct ieee80211_vif *vif,
3295 struct ieee80211_sta *sta)
3296 {
3297 struct wl1271 *wl = hw->priv;
3298 struct wl1271_station *wl_sta;
3299 int ret = 0, id;
3300
3301 mutex_lock(&wl->mutex);
3302
3303 if (unlikely(wl->state == WL1271_STATE_OFF))
3304 goto out;
3305
3306 if (wl->bss_type != BSS_TYPE_AP_BSS)
3307 goto out;
3308
3309 wl1271_debug(DEBUG_MAC80211, "mac80211 remove sta %d", (int)sta->aid);
3310
3311 wl_sta = (struct wl1271_station *)sta->drv_priv;
3312 id = wl_sta->hlid - WL1271_AP_STA_HLID_START;
3313 if (WARN_ON(!test_bit(id, wl->ap_hlid_map)))
3314 goto out;
3315
3316 ret = wl1271_ps_elp_wakeup(wl);
3317 if (ret < 0)
3318 goto out;
3319
3320 ret = wl1271_cmd_remove_sta(wl, wl_sta->hlid);
3321 if (ret < 0)
3322 goto out_sleep;
3323
3324 wl1271_free_sta(wl, wl_sta->hlid);
3325
3326 out_sleep:
3327 wl1271_ps_elp_sleep(wl);
3328
3329 out:
3330 mutex_unlock(&wl->mutex);
3331 return ret;
3332 }
3333
3334 static int wl1271_op_ampdu_action(struct ieee80211_hw *hw,
3335 struct ieee80211_vif *vif,
3336 enum ieee80211_ampdu_mlme_action action,
3337 struct ieee80211_sta *sta, u16 tid, u16 *ssn,
3338 u8 buf_size)
3339 {
3340 struct wl1271 *wl = hw->priv;
3341 int ret;
3342
3343 mutex_lock(&wl->mutex);
3344
3345 if (unlikely(wl->state == WL1271_STATE_OFF)) {
3346 ret = -EAGAIN;
3347 goto out;
3348 }
3349
3350 ret = wl1271_ps_elp_wakeup(wl);
3351 if (ret < 0)
3352 goto out;
3353
3354 switch (action) {
3355 case IEEE80211_AMPDU_RX_START:
3356 if (wl->ba_support) {
3357 ret = wl1271_acx_set_ba_receiver_session(wl, tid, *ssn,
3358 true);
3359 if (!ret)
3360 wl->ba_rx_bitmap |= BIT(tid);
3361 } else {
3362 ret = -ENOTSUPP;
3363 }
3364 break;
3365
3366 case IEEE80211_AMPDU_RX_STOP:
3367 ret = wl1271_acx_set_ba_receiver_session(wl, tid, 0, false);
3368 if (!ret)
3369 wl->ba_rx_bitmap &= ~BIT(tid);
3370 break;
3371
3372 /*
3373 * The BA initiator session management in FW independently.
3374 * Falling break here on purpose for all TX APDU commands.
3375 */
3376 case IEEE80211_AMPDU_TX_START:
3377 case IEEE80211_AMPDU_TX_STOP:
3378 case IEEE80211_AMPDU_TX_OPERATIONAL:
3379 ret = -EINVAL;
3380 break;
3381
3382 default:
3383 wl1271_error("Incorrect ampdu action id=%x\n", action);
3384 ret = -EINVAL;
3385 }
3386
3387 wl1271_ps_elp_sleep(wl);
3388
3389 out:
3390 mutex_unlock(&wl->mutex);
3391
3392 return ret;
3393 }
3394
3395 static bool wl1271_tx_frames_pending(struct ieee80211_hw *hw)
3396 {
3397 struct wl1271 *wl = hw->priv;
3398 bool ret = false;
3399
3400 mutex_lock(&wl->mutex);
3401
3402 if (unlikely(wl->state == WL1271_STATE_OFF))
3403 goto out;
3404
3405 /* packets are considered pending if in the TX queue or the FW */
3406 ret = (wl->tx_queue_count > 0) || (wl->tx_frames_cnt > 0);
3407
3408 /* the above is appropriate for STA mode for PS purposes */
3409 WARN_ON(wl->bss_type != BSS_TYPE_STA_BSS);
3410
3411 out:
3412 mutex_unlock(&wl->mutex);
3413
3414 return ret;
3415 }
3416
3417 /* can't be const, mac80211 writes to this */
3418 static struct ieee80211_rate wl1271_rates[] = {
3419 { .bitrate = 10,
3420 .hw_value = CONF_HW_BIT_RATE_1MBPS,
3421 .hw_value_short = CONF_HW_BIT_RATE_1MBPS, },
3422 { .bitrate = 20,
3423 .hw_value = CONF_HW_BIT_RATE_2MBPS,
3424 .hw_value_short = CONF_HW_BIT_RATE_2MBPS,
3425 .flags = IEEE80211_RATE_SHORT_PREAMBLE },
3426 { .bitrate = 55,
3427 .hw_value = CONF_HW_BIT_RATE_5_5MBPS,
3428 .hw_value_short = CONF_HW_BIT_RATE_5_5MBPS,
3429 .flags = IEEE80211_RATE_SHORT_PREAMBLE },
3430 { .bitrate = 110,
3431 .hw_value = CONF_HW_BIT_RATE_11MBPS,
3432 .hw_value_short = CONF_HW_BIT_RATE_11MBPS,
3433 .flags = IEEE80211_RATE_SHORT_PREAMBLE },
3434 { .bitrate = 60,
3435 .hw_value = CONF_HW_BIT_RATE_6MBPS,
3436 .hw_value_short = CONF_HW_BIT_RATE_6MBPS, },
3437 { .bitrate = 90,
3438 .hw_value = CONF_HW_BIT_RATE_9MBPS,
3439 .hw_value_short = CONF_HW_BIT_RATE_9MBPS, },
3440 { .bitrate = 120,
3441 .hw_value = CONF_HW_BIT_RATE_12MBPS,
3442 .hw_value_short = CONF_HW_BIT_RATE_12MBPS, },
3443 { .bitrate = 180,
3444 .hw_value = CONF_HW_BIT_RATE_18MBPS,
3445 .hw_value_short = CONF_HW_BIT_RATE_18MBPS, },
3446 { .bitrate = 240,
3447 .hw_value = CONF_HW_BIT_RATE_24MBPS,
3448 .hw_value_short = CONF_HW_BIT_RATE_24MBPS, },
3449 { .bitrate = 360,
3450 .hw_value = CONF_HW_BIT_RATE_36MBPS,
3451 .hw_value_short = CONF_HW_BIT_RATE_36MBPS, },
3452 { .bitrate = 480,
3453 .hw_value = CONF_HW_BIT_RATE_48MBPS,
3454 .hw_value_short = CONF_HW_BIT_RATE_48MBPS, },
3455 { .bitrate = 540,
3456 .hw_value = CONF_HW_BIT_RATE_54MBPS,
3457 .hw_value_short = CONF_HW_BIT_RATE_54MBPS, },
3458 };
3459
3460 /* can't be const, mac80211 writes to this */
3461 static struct ieee80211_channel wl1271_channels[] = {
3462 { .hw_value = 1, .center_freq = 2412, .max_power = 25 },
3463 { .hw_value = 2, .center_freq = 2417, .max_power = 25 },
3464 { .hw_value = 3, .center_freq = 2422, .max_power = 25 },
3465 { .hw_value = 4, .center_freq = 2427, .max_power = 25 },
3466 { .hw_value = 5, .center_freq = 2432, .max_power = 25 },
3467 { .hw_value = 6, .center_freq = 2437, .max_power = 25 },
3468 { .hw_value = 7, .center_freq = 2442, .max_power = 25 },
3469 { .hw_value = 8, .center_freq = 2447, .max_power = 25 },
3470 { .hw_value = 9, .center_freq = 2452, .max_power = 25 },
3471 { .hw_value = 10, .center_freq = 2457, .max_power = 25 },
3472 { .hw_value = 11, .center_freq = 2462, .max_power = 25 },
3473 { .hw_value = 12, .center_freq = 2467, .max_power = 25 },
3474 { .hw_value = 13, .center_freq = 2472, .max_power = 25 },
3475 { .hw_value = 14, .center_freq = 2484, .max_power = 25 },
3476 };
3477
3478 /* mapping to indexes for wl1271_rates */
3479 static const u8 wl1271_rate_to_idx_2ghz[] = {
3480 /* MCS rates are used only with 11n */
3481 7, /* CONF_HW_RXTX_RATE_MCS7 */
3482 6, /* CONF_HW_RXTX_RATE_MCS6 */
3483 5, /* CONF_HW_RXTX_RATE_MCS5 */
3484 4, /* CONF_HW_RXTX_RATE_MCS4 */
3485 3, /* CONF_HW_RXTX_RATE_MCS3 */
3486 2, /* CONF_HW_RXTX_RATE_MCS2 */
3487 1, /* CONF_HW_RXTX_RATE_MCS1 */
3488 0, /* CONF_HW_RXTX_RATE_MCS0 */
3489
3490 11, /* CONF_HW_RXTX_RATE_54 */
3491 10, /* CONF_HW_RXTX_RATE_48 */
3492 9, /* CONF_HW_RXTX_RATE_36 */
3493 8, /* CONF_HW_RXTX_RATE_24 */
3494
3495 /* TI-specific rate */
3496 CONF_HW_RXTX_RATE_UNSUPPORTED, /* CONF_HW_RXTX_RATE_22 */
3497
3498 7, /* CONF_HW_RXTX_RATE_18 */
3499 6, /* CONF_HW_RXTX_RATE_12 */
3500 3, /* CONF_HW_RXTX_RATE_11 */
3501 5, /* CONF_HW_RXTX_RATE_9 */
3502 4, /* CONF_HW_RXTX_RATE_6 */
3503 2, /* CONF_HW_RXTX_RATE_5_5 */
3504 1, /* CONF_HW_RXTX_RATE_2 */
3505 0 /* CONF_HW_RXTX_RATE_1 */
3506 };
3507
3508 /* 11n STA capabilities */
3509 #define HW_RX_HIGHEST_RATE 72
3510
3511 #ifdef CONFIG_WL12XX_HT
3512 #define WL12XX_HT_CAP { \
3513 .cap = IEEE80211_HT_CAP_GRN_FLD | IEEE80211_HT_CAP_SGI_20 | \
3514 (1 << IEEE80211_HT_CAP_RX_STBC_SHIFT), \
3515 .ht_supported = true, \
3516 .ampdu_factor = IEEE80211_HT_MAX_AMPDU_8K, \
3517 .ampdu_density = IEEE80211_HT_MPDU_DENSITY_8, \
3518 .mcs = { \
3519 .rx_mask = { 0xff, 0, 0, 0, 0, 0, 0, 0, 0, 0, }, \
3520 .rx_highest = cpu_to_le16(HW_RX_HIGHEST_RATE), \
3521 .tx_params = IEEE80211_HT_MCS_TX_DEFINED, \
3522 }, \
3523 }
3524 #else
3525 #define WL12XX_HT_CAP { \
3526 .ht_supported = false, \
3527 }
3528 #endif
3529
3530 /* can't be const, mac80211 writes to this */
3531 static struct ieee80211_supported_band wl1271_band_2ghz = {
3532 .channels = wl1271_channels,
3533 .n_channels = ARRAY_SIZE(wl1271_channels),
3534 .bitrates = wl1271_rates,
3535 .n_bitrates = ARRAY_SIZE(wl1271_rates),
3536 .ht_cap = WL12XX_HT_CAP,
3537 };
3538
3539 /* 5 GHz data rates for WL1273 */
3540 static struct ieee80211_rate wl1271_rates_5ghz[] = {
3541 { .bitrate = 60,
3542 .hw_value = CONF_HW_BIT_RATE_6MBPS,
3543 .hw_value_short = CONF_HW_BIT_RATE_6MBPS, },
3544 { .bitrate = 90,
3545 .hw_value = CONF_HW_BIT_RATE_9MBPS,
3546 .hw_value_short = CONF_HW_BIT_RATE_9MBPS, },
3547 { .bitrate = 120,
3548 .hw_value = CONF_HW_BIT_RATE_12MBPS,
3549 .hw_value_short = CONF_HW_BIT_RATE_12MBPS, },
3550 { .bitrate = 180,
3551 .hw_value = CONF_HW_BIT_RATE_18MBPS,
3552 .hw_value_short = CONF_HW_BIT_RATE_18MBPS, },
3553 { .bitrate = 240,
3554 .hw_value = CONF_HW_BIT_RATE_24MBPS,
3555 .hw_value_short = CONF_HW_BIT_RATE_24MBPS, },
3556 { .bitrate = 360,
3557 .hw_value = CONF_HW_BIT_RATE_36MBPS,
3558 .hw_value_short = CONF_HW_BIT_RATE_36MBPS, },
3559 { .bitrate = 480,
3560 .hw_value = CONF_HW_BIT_RATE_48MBPS,
3561 .hw_value_short = CONF_HW_BIT_RATE_48MBPS, },
3562 { .bitrate = 540,
3563 .hw_value = CONF_HW_BIT_RATE_54MBPS,
3564 .hw_value_short = CONF_HW_BIT_RATE_54MBPS, },
3565 };
3566
3567 /* 5 GHz band channels for WL1273 */
3568 static struct ieee80211_channel wl1271_channels_5ghz[] = {
3569 { .hw_value = 7, .center_freq = 5035},
3570 { .hw_value = 8, .center_freq = 5040},
3571 { .hw_value = 9, .center_freq = 5045},
3572 { .hw_value = 11, .center_freq = 5055},
3573 { .hw_value = 12, .center_freq = 5060},
3574 { .hw_value = 16, .center_freq = 5080},
3575 { .hw_value = 34, .center_freq = 5170},
3576 { .hw_value = 36, .center_freq = 5180},
3577 { .hw_value = 38, .center_freq = 5190},
3578 { .hw_value = 40, .center_freq = 5200},
3579 { .hw_value = 42, .center_freq = 5210},
3580 { .hw_value = 44, .center_freq = 5220},
3581 { .hw_value = 46, .center_freq = 5230},
3582 { .hw_value = 48, .center_freq = 5240},
3583 { .hw_value = 52, .center_freq = 5260},
3584 { .hw_value = 56, .center_freq = 5280},
3585 { .hw_value = 60, .center_freq = 5300},
3586 { .hw_value = 64, .center_freq = 5320},
3587 { .hw_value = 100, .center_freq = 5500},
3588 { .hw_value = 104, .center_freq = 5520},
3589 { .hw_value = 108, .center_freq = 5540},
3590 { .hw_value = 112, .center_freq = 5560},
3591 { .hw_value = 116, .center_freq = 5580},
3592 { .hw_value = 120, .center_freq = 5600},
3593 { .hw_value = 124, .center_freq = 5620},
3594 { .hw_value = 128, .center_freq = 5640},
3595 { .hw_value = 132, .center_freq = 5660},
3596 { .hw_value = 136, .center_freq = 5680},
3597 { .hw_value = 140, .center_freq = 5700},
3598 { .hw_value = 149, .center_freq = 5745},
3599 { .hw_value = 153, .center_freq = 5765},
3600 { .hw_value = 157, .center_freq = 5785},
3601 { .hw_value = 161, .center_freq = 5805},
3602 { .hw_value = 165, .center_freq = 5825},
3603 };
3604
3605 /* mapping to indexes for wl1271_rates_5ghz */
3606 static const u8 wl1271_rate_to_idx_5ghz[] = {
3607 /* MCS rates are used only with 11n */
3608 7, /* CONF_HW_RXTX_RATE_MCS7 */
3609 6, /* CONF_HW_RXTX_RATE_MCS6 */
3610 5, /* CONF_HW_RXTX_RATE_MCS5 */
3611 4, /* CONF_HW_RXTX_RATE_MCS4 */
3612 3, /* CONF_HW_RXTX_RATE_MCS3 */
3613 2, /* CONF_HW_RXTX_RATE_MCS2 */
3614 1, /* CONF_HW_RXTX_RATE_MCS1 */
3615 0, /* CONF_HW_RXTX_RATE_MCS0 */
3616
3617 7, /* CONF_HW_RXTX_RATE_54 */
3618 6, /* CONF_HW_RXTX_RATE_48 */
3619 5, /* CONF_HW_RXTX_RATE_36 */
3620 4, /* CONF_HW_RXTX_RATE_24 */
3621
3622 /* TI-specific rate */
3623 CONF_HW_RXTX_RATE_UNSUPPORTED, /* CONF_HW_RXTX_RATE_22 */
3624
3625 3, /* CONF_HW_RXTX_RATE_18 */
3626 2, /* CONF_HW_RXTX_RATE_12 */
3627 CONF_HW_RXTX_RATE_UNSUPPORTED, /* CONF_HW_RXTX_RATE_11 */
3628 1, /* CONF_HW_RXTX_RATE_9 */
3629 0, /* CONF_HW_RXTX_RATE_6 */
3630 CONF_HW_RXTX_RATE_UNSUPPORTED, /* CONF_HW_RXTX_RATE_5_5 */
3631 CONF_HW_RXTX_RATE_UNSUPPORTED, /* CONF_HW_RXTX_RATE_2 */
3632 CONF_HW_RXTX_RATE_UNSUPPORTED /* CONF_HW_RXTX_RATE_1 */
3633 };
3634
3635 static struct ieee80211_supported_band wl1271_band_5ghz = {
3636 .channels = wl1271_channels_5ghz,
3637 .n_channels = ARRAY_SIZE(wl1271_channels_5ghz),
3638 .bitrates = wl1271_rates_5ghz,
3639 .n_bitrates = ARRAY_SIZE(wl1271_rates_5ghz),
3640 .ht_cap = WL12XX_HT_CAP,
3641 };
3642
3643 static const u8 *wl1271_band_rate_to_idx[] = {
3644 [IEEE80211_BAND_2GHZ] = wl1271_rate_to_idx_2ghz,
3645 [IEEE80211_BAND_5GHZ] = wl1271_rate_to_idx_5ghz
3646 };
3647
3648 static const struct ieee80211_ops wl1271_ops = {
3649 .start = wl1271_op_start,
3650 .stop = wl1271_op_stop,
3651 .add_interface = wl1271_op_add_interface,
3652 .remove_interface = wl1271_op_remove_interface,
3653 .suspend = wl1271_op_suspend,
3654 .resume = wl1271_op_resume,
3655 .config = wl1271_op_config,
3656 .prepare_multicast = wl1271_op_prepare_multicast,
3657 .configure_filter = wl1271_op_configure_filter,
3658 .tx = wl1271_op_tx,
3659 .set_key = wl1271_op_set_key,
3660 .hw_scan = wl1271_op_hw_scan,
3661 .sched_scan_start = wl1271_op_sched_scan_start,
3662 .sched_scan_stop = wl1271_op_sched_scan_stop,
3663 .bss_info_changed = wl1271_op_bss_info_changed,
3664 .set_frag_threshold = wl1271_op_set_frag_threshold,
3665 .set_rts_threshold = wl1271_op_set_rts_threshold,
3666 .conf_tx = wl1271_op_conf_tx,
3667 .get_tsf = wl1271_op_get_tsf,
3668 .get_survey = wl1271_op_get_survey,
3669 .sta_add = wl1271_op_sta_add,
3670 .sta_remove = wl1271_op_sta_remove,
3671 .ampdu_action = wl1271_op_ampdu_action,
3672 .tx_frames_pending = wl1271_tx_frames_pending,
3673 CFG80211_TESTMODE_CMD(wl1271_tm_cmd)
3674 };
3675
3676
3677 u8 wl1271_rate_to_idx(int rate, enum ieee80211_band band)
3678 {
3679 u8 idx;
3680
3681 BUG_ON(band >= sizeof(wl1271_band_rate_to_idx)/sizeof(u8 *));
3682
3683 if (unlikely(rate >= CONF_HW_RXTX_RATE_MAX)) {
3684 wl1271_error("Illegal RX rate from HW: %d", rate);
3685 return 0;
3686 }
3687
3688 idx = wl1271_band_rate_to_idx[band][rate];
3689 if (unlikely(idx == CONF_HW_RXTX_RATE_UNSUPPORTED)) {
3690 wl1271_error("Unsupported RX rate from HW: %d", rate);
3691 return 0;
3692 }
3693
3694 return idx;
3695 }
3696
3697 static ssize_t wl1271_sysfs_show_bt_coex_state(struct device *dev,
3698 struct device_attribute *attr,
3699 char *buf)
3700 {
3701 struct wl1271 *wl = dev_get_drvdata(dev);
3702 ssize_t len;
3703
3704 len = PAGE_SIZE;
3705
3706 mutex_lock(&wl->mutex);
3707 len = snprintf(buf, len, "%d\n\n0 - off\n1 - on\n",
3708 wl->sg_enabled);
3709 mutex_unlock(&wl->mutex);
3710
3711 return len;
3712
3713 }
3714
3715 static ssize_t wl1271_sysfs_store_bt_coex_state(struct device *dev,
3716 struct device_attribute *attr,
3717 const char *buf, size_t count)
3718 {
3719 struct wl1271 *wl = dev_get_drvdata(dev);
3720 unsigned long res;
3721 int ret;
3722
3723 ret = kstrtoul(buf, 10, &res);
3724 if (ret < 0) {
3725 wl1271_warning("incorrect value written to bt_coex_mode");
3726 return count;
3727 }
3728
3729 mutex_lock(&wl->mutex);
3730
3731 res = !!res;
3732
3733 if (res == wl->sg_enabled)
3734 goto out;
3735
3736 wl->sg_enabled = res;
3737
3738 if (wl->state == WL1271_STATE_OFF)
3739 goto out;
3740
3741 ret = wl1271_ps_elp_wakeup(wl);
3742 if (ret < 0)
3743 goto out;
3744
3745 wl1271_acx_sg_enable(wl, wl->sg_enabled);
3746 wl1271_ps_elp_sleep(wl);
3747
3748 out:
3749 mutex_unlock(&wl->mutex);
3750 return count;
3751 }
3752
3753 static DEVICE_ATTR(bt_coex_state, S_IRUGO | S_IWUSR,
3754 wl1271_sysfs_show_bt_coex_state,
3755 wl1271_sysfs_store_bt_coex_state);
3756
3757 static ssize_t wl1271_sysfs_show_hw_pg_ver(struct device *dev,
3758 struct device_attribute *attr,
3759 char *buf)
3760 {
3761 struct wl1271 *wl = dev_get_drvdata(dev);
3762 ssize_t len;
3763
3764 len = PAGE_SIZE;
3765
3766 mutex_lock(&wl->mutex);
3767 if (wl->hw_pg_ver >= 0)
3768 len = snprintf(buf, len, "%d\n", wl->hw_pg_ver);
3769 else
3770 len = snprintf(buf, len, "n/a\n");
3771 mutex_unlock(&wl->mutex);
3772
3773 return len;
3774 }
3775
3776 static DEVICE_ATTR(hw_pg_ver, S_IRUGO | S_IWUSR,
3777 wl1271_sysfs_show_hw_pg_ver, NULL);
3778
3779 int wl1271_register_hw(struct wl1271 *wl)
3780 {
3781 int ret;
3782
3783 if (wl->mac80211_registered)
3784 return 0;
3785
3786 ret = wl1271_fetch_nvs(wl);
3787 if (ret == 0) {
3788 /* NOTE: The wl->nvs->nvs element must be first, in
3789 * order to simplify the casting, we assume it is at
3790 * the beginning of the wl->nvs structure.
3791 */
3792 u8 *nvs_ptr = (u8 *)wl->nvs;
3793
3794 wl->mac_addr[0] = nvs_ptr[11];
3795 wl->mac_addr[1] = nvs_ptr[10];
3796 wl->mac_addr[2] = nvs_ptr[6];
3797 wl->mac_addr[3] = nvs_ptr[5];
3798 wl->mac_addr[4] = nvs_ptr[4];
3799 wl->mac_addr[5] = nvs_ptr[3];
3800 }
3801
3802 SET_IEEE80211_PERM_ADDR(wl->hw, wl->mac_addr);
3803
3804 ret = ieee80211_register_hw(wl->hw);
3805 if (ret < 0) {
3806 wl1271_error("unable to register mac80211 hw: %d", ret);
3807 return ret;
3808 }
3809
3810 wl->mac80211_registered = true;
3811
3812 wl1271_debugfs_init(wl);
3813
3814 register_netdevice_notifier(&wl1271_dev_notifier);
3815
3816 wl1271_notice("loaded");
3817
3818 return 0;
3819 }
3820 EXPORT_SYMBOL_GPL(wl1271_register_hw);
3821
3822 void wl1271_unregister_hw(struct wl1271 *wl)
3823 {
3824 if (wl->state == WL1271_STATE_PLT)
3825 __wl1271_plt_stop(wl);
3826
3827 unregister_netdevice_notifier(&wl1271_dev_notifier);
3828 ieee80211_unregister_hw(wl->hw);
3829 wl->mac80211_registered = false;
3830
3831 }
3832 EXPORT_SYMBOL_GPL(wl1271_unregister_hw);
3833
3834 int wl1271_init_ieee80211(struct wl1271 *wl)
3835 {
3836 static const u32 cipher_suites[] = {
3837 WLAN_CIPHER_SUITE_WEP40,
3838 WLAN_CIPHER_SUITE_WEP104,
3839 WLAN_CIPHER_SUITE_TKIP,
3840 WLAN_CIPHER_SUITE_CCMP,
3841 WL1271_CIPHER_SUITE_GEM,
3842 };
3843
3844 /* The tx descriptor buffer and the TKIP space. */
3845 wl->hw->extra_tx_headroom = WL1271_TKIP_IV_SPACE +
3846 sizeof(struct wl1271_tx_hw_descr);
3847
3848 /* unit us */
3849 /* FIXME: find a proper value */
3850 wl->hw->channel_change_time = 10000;
3851 wl->hw->max_listen_interval = wl->conf.conn.max_listen_interval;
3852
3853 wl->hw->flags = IEEE80211_HW_SIGNAL_DBM |
3854 IEEE80211_HW_BEACON_FILTER |
3855 IEEE80211_HW_SUPPORTS_PS |
3856 IEEE80211_HW_SUPPORTS_UAPSD |
3857 IEEE80211_HW_HAS_RATE_CONTROL |
3858 IEEE80211_HW_CONNECTION_MONITOR |
3859 IEEE80211_HW_SUPPORTS_CQM_RSSI |
3860 IEEE80211_HW_REPORTS_TX_ACK_STATUS |
3861 IEEE80211_HW_SPECTRUM_MGMT |
3862 IEEE80211_HW_AP_LINK_PS;
3863
3864 wl->hw->wiphy->cipher_suites = cipher_suites;
3865 wl->hw->wiphy->n_cipher_suites = ARRAY_SIZE(cipher_suites);
3866
3867 wl->hw->wiphy->interface_modes = BIT(NL80211_IFTYPE_STATION) |
3868 BIT(NL80211_IFTYPE_ADHOC) | BIT(NL80211_IFTYPE_AP);
3869 wl->hw->wiphy->max_scan_ssids = 1;
3870 /*
3871 * Maximum length of elements in scanning probe request templates
3872 * should be the maximum length possible for a template, without
3873 * the IEEE80211 header of the template
3874 */
3875 wl->hw->wiphy->max_scan_ie_len = WL1271_CMD_TEMPL_MAX_SIZE -
3876 sizeof(struct ieee80211_header);
3877
3878 /* make sure all our channels fit in the scanned_ch bitmask */
3879 BUILD_BUG_ON(ARRAY_SIZE(wl1271_channels) +
3880 ARRAY_SIZE(wl1271_channels_5ghz) >
3881 WL1271_MAX_CHANNELS);
3882 /*
3883 * We keep local copies of the band structs because we need to
3884 * modify them on a per-device basis.
3885 */
3886 memcpy(&wl->bands[IEEE80211_BAND_2GHZ], &wl1271_band_2ghz,
3887 sizeof(wl1271_band_2ghz));
3888 memcpy(&wl->bands[IEEE80211_BAND_5GHZ], &wl1271_band_5ghz,
3889 sizeof(wl1271_band_5ghz));
3890
3891 wl->hw->wiphy->bands[IEEE80211_BAND_2GHZ] =
3892 &wl->bands[IEEE80211_BAND_2GHZ];
3893 wl->hw->wiphy->bands[IEEE80211_BAND_5GHZ] =
3894 &wl->bands[IEEE80211_BAND_5GHZ];
3895
3896 wl->hw->queues = 4;
3897 wl->hw->max_rates = 1;
3898
3899 wl->hw->wiphy->reg_notifier = wl1271_reg_notify;
3900
3901 SET_IEEE80211_DEV(wl->hw, wl1271_wl_to_dev(wl));
3902
3903 wl->hw->sta_data_size = sizeof(struct wl1271_station);
3904
3905 wl->hw->max_rx_aggregation_subframes = 8;
3906
3907 return 0;
3908 }
3909 EXPORT_SYMBOL_GPL(wl1271_init_ieee80211);
3910
3911 #define WL1271_DEFAULT_CHANNEL 0
3912
3913 struct ieee80211_hw *wl1271_alloc_hw(void)
3914 {
3915 struct ieee80211_hw *hw;
3916 struct platform_device *plat_dev = NULL;
3917 struct wl1271 *wl;
3918 int i, j, ret;
3919 unsigned int order;
3920
3921 hw = ieee80211_alloc_hw(sizeof(*wl), &wl1271_ops);
3922 if (!hw) {
3923 wl1271_error("could not alloc ieee80211_hw");
3924 ret = -ENOMEM;
3925 goto err_hw_alloc;
3926 }
3927
3928 plat_dev = kmemdup(&wl1271_device, sizeof(wl1271_device), GFP_KERNEL);
3929 if (!plat_dev) {
3930 wl1271_error("could not allocate platform_device");
3931 ret = -ENOMEM;
3932 goto err_plat_alloc;
3933 }
3934
3935 wl = hw->priv;
3936 memset(wl, 0, sizeof(*wl));
3937
3938 INIT_LIST_HEAD(&wl->list);
3939
3940 wl->hw = hw;
3941 wl->plat_dev = plat_dev;
3942
3943 for (i = 0; i < NUM_TX_QUEUES; i++)
3944 skb_queue_head_init(&wl->tx_queue[i]);
3945
3946 for (i = 0; i < NUM_TX_QUEUES; i++)
3947 for (j = 0; j < AP_MAX_LINKS; j++)
3948 skb_queue_head_init(&wl->links[j].tx_queue[i]);
3949
3950 skb_queue_head_init(&wl->deferred_rx_queue);
3951 skb_queue_head_init(&wl->deferred_tx_queue);
3952
3953 INIT_DELAYED_WORK(&wl->elp_work, wl1271_elp_work);
3954 INIT_DELAYED_WORK(&wl->pspoll_work, wl1271_pspoll_work);
3955 INIT_WORK(&wl->netstack_work, wl1271_netstack_work);
3956 INIT_WORK(&wl->tx_work, wl1271_tx_work);
3957 INIT_WORK(&wl->recovery_work, wl1271_recovery_work);
3958 INIT_DELAYED_WORK(&wl->scan_complete_work, wl1271_scan_complete_work);
3959 wl->channel = WL1271_DEFAULT_CHANNEL;
3960 wl->beacon_int = WL1271_DEFAULT_BEACON_INT;
3961 wl->default_key = 0;
3962 wl->rx_counter = 0;
3963 wl->rx_config = WL1271_DEFAULT_STA_RX_CONFIG;
3964 wl->rx_filter = WL1271_DEFAULT_STA_RX_FILTER;
3965 wl->psm_entry_retry = 0;
3966 wl->power_level = WL1271_DEFAULT_POWER_LEVEL;
3967 wl->basic_rate_set = CONF_TX_RATE_MASK_BASIC;
3968 wl->basic_rate = CONF_TX_RATE_MASK_BASIC;
3969 wl->rate_set = CONF_TX_RATE_MASK_BASIC;
3970 wl->band = IEEE80211_BAND_2GHZ;
3971 wl->vif = NULL;
3972 wl->flags = 0;
3973 wl->sg_enabled = true;
3974 wl->hw_pg_ver = -1;
3975 wl->bss_type = MAX_BSS_TYPE;
3976 wl->set_bss_type = MAX_BSS_TYPE;
3977 wl->fw_bss_type = MAX_BSS_TYPE;
3978 wl->last_tx_hlid = 0;
3979 wl->ap_ps_map = 0;
3980 wl->ap_fw_ps_map = 0;
3981 wl->quirks = 0;
3982 wl->platform_quirks = 0;
3983 wl->sched_scanning = false;
3984
3985 memset(wl->tx_frames_map, 0, sizeof(wl->tx_frames_map));
3986 for (i = 0; i < ACX_TX_DESCRIPTORS; i++)
3987 wl->tx_frames[i] = NULL;
3988
3989 spin_lock_init(&wl->wl_lock);
3990
3991 wl->state = WL1271_STATE_OFF;
3992 mutex_init(&wl->mutex);
3993
3994 /* Apply default driver configuration. */
3995 wl1271_conf_init(wl);
3996
3997 order = get_order(WL1271_AGGR_BUFFER_SIZE);
3998 wl->aggr_buf = (u8 *)__get_free_pages(GFP_KERNEL, order);
3999 if (!wl->aggr_buf) {
4000 ret = -ENOMEM;
4001 goto err_hw;
4002 }
4003
4004 wl->dummy_packet = wl12xx_alloc_dummy_packet(wl);
4005 if (!wl->dummy_packet) {
4006 ret = -ENOMEM;
4007 goto err_aggr;
4008 }
4009
4010 /* Register platform device */
4011 ret = platform_device_register(wl->plat_dev);
4012 if (ret) {
4013 wl1271_error("couldn't register platform device");
4014 goto err_dummy_packet;
4015 }
4016 dev_set_drvdata(&wl->plat_dev->dev, wl);
4017
4018 /* Create sysfs file to control bt coex state */
4019 ret = device_create_file(&wl->plat_dev->dev, &dev_attr_bt_coex_state);
4020 if (ret < 0) {
4021 wl1271_error("failed to create sysfs file bt_coex_state");
4022 goto err_platform;
4023 }
4024
4025 /* Create sysfs file to get HW PG version */
4026 ret = device_create_file(&wl->plat_dev->dev, &dev_attr_hw_pg_ver);
4027 if (ret < 0) {
4028 wl1271_error("failed to create sysfs file hw_pg_ver");
4029 goto err_bt_coex_state;
4030 }
4031
4032 return hw;
4033
4034 err_bt_coex_state:
4035 device_remove_file(&wl->plat_dev->dev, &dev_attr_bt_coex_state);
4036
4037 err_platform:
4038 platform_device_unregister(wl->plat_dev);
4039
4040 err_dummy_packet:
4041 dev_kfree_skb(wl->dummy_packet);
4042
4043 err_aggr:
4044 free_pages((unsigned long)wl->aggr_buf, order);
4045
4046 err_hw:
4047 wl1271_debugfs_exit(wl);
4048 kfree(plat_dev);
4049
4050 err_plat_alloc:
4051 ieee80211_free_hw(hw);
4052
4053 err_hw_alloc:
4054
4055 return ERR_PTR(ret);
4056 }
4057 EXPORT_SYMBOL_GPL(wl1271_alloc_hw);
4058
4059 int wl1271_free_hw(struct wl1271 *wl)
4060 {
4061 platform_device_unregister(wl->plat_dev);
4062 dev_kfree_skb(wl->dummy_packet);
4063 free_pages((unsigned long)wl->aggr_buf,
4064 get_order(WL1271_AGGR_BUFFER_SIZE));
4065 kfree(wl->plat_dev);
4066
4067 wl1271_debugfs_exit(wl);
4068
4069 vfree(wl->fw);
4070 wl->fw = NULL;
4071 kfree(wl->nvs);
4072 wl->nvs = NULL;
4073
4074 kfree(wl->fw_status);
4075 kfree(wl->tx_res_if);
4076
4077 ieee80211_free_hw(wl->hw);
4078
4079 return 0;
4080 }
4081 EXPORT_SYMBOL_GPL(wl1271_free_hw);
4082
4083 u32 wl12xx_debug_level = DEBUG_NONE;
4084 EXPORT_SYMBOL_GPL(wl12xx_debug_level);
4085 module_param_named(debug_level, wl12xx_debug_level, uint, S_IRUSR | S_IWUSR);
4086 MODULE_PARM_DESC(debug_level, "wl12xx debugging level");
4087
4088 MODULE_LICENSE("GPL");
4089 MODULE_AUTHOR("Luciano Coelho <coelho@ti.com>");
4090 MODULE_AUTHOR("Juuso Oikarinen <juuso.oikarinen@nokia.com>");