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wl12xx: use freezable workqueue for netstack_work
[linux-2.6/linux-acpi-2.6/ibm-acpi-2.6.git] / drivers / net / wireless / wl12xx / main.c
blobab3aa45db07b993f6b49a9b87a68f17e770c3d54
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 .dwell_time_dfs = 150,
315 .num_probe_reqs = 2,
316 .rssi_threshold = -90,
317 .snr_threshold = 0,
318 },
319 .rf = {
320 .tx_per_channel_power_compensation_2 = {
321 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
322 },
323 .tx_per_channel_power_compensation_5 = {
324 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
325 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
326 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
327 },
328 },
329 .ht = {
330 .tx_ba_win_size = 64,
331 .inactivity_timeout = 10000,
332 },
333 .mem_wl127x = {
334 .num_stations = 1,
335 .ssid_profiles = 1,
336 .rx_block_num = 70,
337 .tx_min_block_num = 40,
338 .dynamic_memory = 1,
339 .min_req_tx_blocks = 100,
340 .min_req_rx_blocks = 22,
341 .tx_min = 27,
342 },
343 .mem_wl128x = {
344 .num_stations = 1,
345 .ssid_profiles = 1,
346 .rx_block_num = 40,
347 .tx_min_block_num = 40,
348 .dynamic_memory = 1,
349 .min_req_tx_blocks = 45,
350 .min_req_rx_blocks = 22,
351 .tx_min = 27,
352 },
353 .fm_coex = {
354 .enable = true,
355 .swallow_period = 5,
356 .n_divider_fref_set_1 = 0xff, /* default */
357 .n_divider_fref_set_2 = 12,
358 .m_divider_fref_set_1 = 148,
359 .m_divider_fref_set_2 = 0xffff, /* default */
360 .coex_pll_stabilization_time = 0xffffffff, /* default */
361 .ldo_stabilization_time = 0xffff, /* default */
362 .fm_disturbed_band_margin = 0xff, /* default */
363 .swallow_clk_diff = 0xff, /* default */
364 },
365 .rx_streaming = {
366 .duration = 150,
367 .queues = 0x1,
368 .interval = 20,
369 .always = 0,
370 },
371 .hci_io_ds = HCI_IO_DS_6MA,
372 };
373
374 static void __wl1271_op_remove_interface(struct wl1271 *wl,
375 bool reset_tx_queues);
376 static void wl1271_free_ap_keys(struct wl1271 *wl);
377
378
379 static void wl1271_device_release(struct device *dev)
380 {
381
382 }
383
384 static struct platform_device wl1271_device = {
385 .name = "wl1271",
386 .id = -1,
387
388 /* device model insists to have a release function */
389 .dev = {
390 .release = wl1271_device_release,
391 },
392 };
393
394 static DEFINE_MUTEX(wl_list_mutex);
395 static LIST_HEAD(wl_list);
396
397 static int wl1271_check_operstate(struct wl1271 *wl, unsigned char operstate)
398 {
399 int ret;
400 if (operstate != IF_OPER_UP)
401 return 0;
402
403 if (test_and_set_bit(WL1271_FLAG_STA_STATE_SENT, &wl->flags))
404 return 0;
405
406 ret = wl1271_cmd_set_sta_state(wl);
407 if (ret < 0)
408 return ret;
409
410 wl1271_info("Association completed.");
411 return 0;
412 }
413 static int wl1271_dev_notify(struct notifier_block *me, unsigned long what,
414 void *arg)
415 {
416 struct net_device *dev = arg;
417 struct wireless_dev *wdev;
418 struct wiphy *wiphy;
419 struct ieee80211_hw *hw;
420 struct wl1271 *wl;
421 struct wl1271 *wl_temp;
422 int ret = 0;
423
424 /* Check that this notification is for us. */
425 if (what != NETDEV_CHANGE)
426 return NOTIFY_DONE;
427
428 wdev = dev->ieee80211_ptr;
429 if (wdev == NULL)
430 return NOTIFY_DONE;
431
432 wiphy = wdev->wiphy;
433 if (wiphy == NULL)
434 return NOTIFY_DONE;
435
436 hw = wiphy_priv(wiphy);
437 if (hw == NULL)
438 return NOTIFY_DONE;
439
440 wl_temp = hw->priv;
441 mutex_lock(&wl_list_mutex);
442 list_for_each_entry(wl, &wl_list, list) {
443 if (wl == wl_temp)
444 break;
445 }
446 mutex_unlock(&wl_list_mutex);
447 if (wl != wl_temp)
448 return NOTIFY_DONE;
449
450 mutex_lock(&wl->mutex);
451
452 if (wl->state == WL1271_STATE_OFF)
453 goto out;
454
455 if (!test_bit(WL1271_FLAG_STA_ASSOCIATED, &wl->flags))
456 goto out;
457
458 ret = wl1271_ps_elp_wakeup(wl);
459 if (ret < 0)
460 goto out;
461
462 wl1271_check_operstate(wl, dev->operstate);
463
464 wl1271_ps_elp_sleep(wl);
465
466 out:
467 mutex_unlock(&wl->mutex);
468
469 return NOTIFY_OK;
470 }
471
472 static int wl1271_reg_notify(struct wiphy *wiphy,
473 struct regulatory_request *request)
474 {
475 struct ieee80211_supported_band *band;
476 struct ieee80211_channel *ch;
477 int i;
478
479 band = wiphy->bands[IEEE80211_BAND_5GHZ];
480 for (i = 0; i < band->n_channels; i++) {
481 ch = &band->channels[i];
482 if (ch->flags & IEEE80211_CHAN_DISABLED)
483 continue;
484
485 if (ch->flags & IEEE80211_CHAN_RADAR)
486 ch->flags |= IEEE80211_CHAN_NO_IBSS |
487 IEEE80211_CHAN_PASSIVE_SCAN;
488
489 }
490
491 return 0;
492 }
493
494 static int wl1271_set_rx_streaming(struct wl1271 *wl, bool enable)
495 {
496 int ret = 0;
497
498 /* we should hold wl->mutex */
499 ret = wl1271_acx_ps_rx_streaming(wl, enable);
500 if (ret < 0)
501 goto out;
502
503 if (enable)
504 set_bit(WL1271_FLAG_RX_STREAMING_STARTED, &wl->flags);
505 else
506 clear_bit(WL1271_FLAG_RX_STREAMING_STARTED, &wl->flags);
507 out:
508 return ret;
509 }
510
511 /*
512 * this function is being called when the rx_streaming interval
513 * has beed changed or rx_streaming should be disabled
514 */
515 int wl1271_recalc_rx_streaming(struct wl1271 *wl)
516 {
517 int ret = 0;
518 int period = wl->conf.rx_streaming.interval;
519
520 /* don't reconfigure if rx_streaming is disabled */
521 if (!test_bit(WL1271_FLAG_RX_STREAMING_STARTED, &wl->flags))
522 goto out;
523
524 /* reconfigure/disable according to new streaming_period */
525 if (period &&
526 test_bit(WL1271_FLAG_STA_ASSOCIATED, &wl->flags) &&
527 (wl->conf.rx_streaming.always ||
528 test_bit(WL1271_FLAG_SOFT_GEMINI, &wl->flags)))
529 ret = wl1271_set_rx_streaming(wl, true);
530 else {
531 ret = wl1271_set_rx_streaming(wl, false);
532 /* don't cancel_work_sync since we might deadlock */
533 del_timer_sync(&wl->rx_streaming_timer);
534 }
535 out:
536 return ret;
537 }
538
539 static void wl1271_rx_streaming_enable_work(struct work_struct *work)
540 {
541 int ret;
542 struct wl1271 *wl =
543 container_of(work, struct wl1271, rx_streaming_enable_work);
544
545 mutex_lock(&wl->mutex);
546
547 if (test_bit(WL1271_FLAG_RX_STREAMING_STARTED, &wl->flags) ||
548 !test_bit(WL1271_FLAG_STA_ASSOCIATED, &wl->flags) ||
549 (!wl->conf.rx_streaming.always &&
550 !test_bit(WL1271_FLAG_SOFT_GEMINI, &wl->flags)))
551 goto out;
552
553 if (!wl->conf.rx_streaming.interval)
554 goto out;
555
556 ret = wl1271_ps_elp_wakeup(wl);
557 if (ret < 0)
558 goto out;
559
560 ret = wl1271_set_rx_streaming(wl, true);
561 if (ret < 0)
562 goto out_sleep;
563
564 /* stop it after some time of inactivity */
565 mod_timer(&wl->rx_streaming_timer,
566 jiffies + msecs_to_jiffies(wl->conf.rx_streaming.duration));
567
568 out_sleep:
569 wl1271_ps_elp_sleep(wl);
570 out:
571 mutex_unlock(&wl->mutex);
572 }
573
574 static void wl1271_rx_streaming_disable_work(struct work_struct *work)
575 {
576 int ret;
577 struct wl1271 *wl =
578 container_of(work, struct wl1271, rx_streaming_disable_work);
579
580 mutex_lock(&wl->mutex);
581
582 if (!test_bit(WL1271_FLAG_RX_STREAMING_STARTED, &wl->flags))
583 goto out;
584
585 ret = wl1271_ps_elp_wakeup(wl);
586 if (ret < 0)
587 goto out;
588
589 ret = wl1271_set_rx_streaming(wl, false);
590 if (ret)
591 goto out_sleep;
592
593 out_sleep:
594 wl1271_ps_elp_sleep(wl);
595 out:
596 mutex_unlock(&wl->mutex);
597 }
598
599 static void wl1271_rx_streaming_timer(unsigned long data)
600 {
601 struct wl1271 *wl = (struct wl1271 *)data;
602 ieee80211_queue_work(wl->hw, &wl->rx_streaming_disable_work);
603 }
604
605 static void wl1271_conf_init(struct wl1271 *wl)
606 {
607
608 /*
609 * This function applies the default configuration to the driver. This
610 * function is invoked upon driver load (spi probe.)
611 *
612 * The configuration is stored in a run-time structure in order to
613 * facilitate for run-time adjustment of any of the parameters. Making
614 * changes to the configuration structure will apply the new values on
615 * the next interface up (wl1271_op_start.)
616 */
617
618 /* apply driver default configuration */
619 memcpy(&wl->conf, &default_conf, sizeof(default_conf));
620 }
621
622
623 static int wl1271_plt_init(struct wl1271 *wl)
624 {
625 struct conf_tx_ac_category *conf_ac;
626 struct conf_tx_tid *conf_tid;
627 int ret, i;
628
629 if (wl->chip.id == CHIP_ID_1283_PG20)
630 ret = wl128x_cmd_general_parms(wl);
631 else
632 ret = wl1271_cmd_general_parms(wl);
633 if (ret < 0)
634 return ret;
635
636 if (wl->chip.id == CHIP_ID_1283_PG20)
637 ret = wl128x_cmd_radio_parms(wl);
638 else
639 ret = wl1271_cmd_radio_parms(wl);
640 if (ret < 0)
641 return ret;
642
643 if (wl->chip.id != CHIP_ID_1283_PG20) {
644 ret = wl1271_cmd_ext_radio_parms(wl);
645 if (ret < 0)
646 return ret;
647 }
648 if (ret < 0)
649 return ret;
650
651 /* Chip-specific initializations */
652 ret = wl1271_chip_specific_init(wl);
653 if (ret < 0)
654 return ret;
655
656 ret = wl1271_sta_init_templates_config(wl);
657 if (ret < 0)
658 return ret;
659
660 ret = wl1271_acx_init_mem_config(wl);
661 if (ret < 0)
662 return ret;
663
664 /* PHY layer config */
665 ret = wl1271_init_phy_config(wl);
666 if (ret < 0)
667 goto out_free_memmap;
668
669 ret = wl1271_acx_dco_itrim_params(wl);
670 if (ret < 0)
671 goto out_free_memmap;
672
673 /* Initialize connection monitoring thresholds */
674 ret = wl1271_acx_conn_monit_params(wl, false);
675 if (ret < 0)
676 goto out_free_memmap;
677
678 /* Bluetooth WLAN coexistence */
679 ret = wl1271_init_pta(wl);
680 if (ret < 0)
681 goto out_free_memmap;
682
683 /* FM WLAN coexistence */
684 ret = wl1271_acx_fm_coex(wl);
685 if (ret < 0)
686 goto out_free_memmap;
687
688 /* Energy detection */
689 ret = wl1271_init_energy_detection(wl);
690 if (ret < 0)
691 goto out_free_memmap;
692
693 ret = wl1271_acx_sta_mem_cfg(wl);
694 if (ret < 0)
695 goto out_free_memmap;
696
697 /* Default fragmentation threshold */
698 ret = wl1271_acx_frag_threshold(wl, wl->conf.tx.frag_threshold);
699 if (ret < 0)
700 goto out_free_memmap;
701
702 /* Default TID/AC configuration */
703 BUG_ON(wl->conf.tx.tid_conf_count != wl->conf.tx.ac_conf_count);
704 for (i = 0; i < wl->conf.tx.tid_conf_count; i++) {
705 conf_ac = &wl->conf.tx.ac_conf[i];
706 ret = wl1271_acx_ac_cfg(wl, conf_ac->ac, conf_ac->cw_min,
707 conf_ac->cw_max, conf_ac->aifsn,
708 conf_ac->tx_op_limit);
709 if (ret < 0)
710 goto out_free_memmap;
711
712 conf_tid = &wl->conf.tx.tid_conf[i];
713 ret = wl1271_acx_tid_cfg(wl, conf_tid->queue_id,
714 conf_tid->channel_type,
715 conf_tid->tsid,
716 conf_tid->ps_scheme,
717 conf_tid->ack_policy,
718 conf_tid->apsd_conf[0],
719 conf_tid->apsd_conf[1]);
720 if (ret < 0)
721 goto out_free_memmap;
722 }
723
724 /* Enable data path */
725 ret = wl1271_cmd_data_path(wl, 1);
726 if (ret < 0)
727 goto out_free_memmap;
728
729 /* Configure for CAM power saving (ie. always active) */
730 ret = wl1271_acx_sleep_auth(wl, WL1271_PSM_CAM);
731 if (ret < 0)
732 goto out_free_memmap;
733
734 /* configure PM */
735 ret = wl1271_acx_pm_config(wl);
736 if (ret < 0)
737 goto out_free_memmap;
738
739 return 0;
740
741 out_free_memmap:
742 kfree(wl->target_mem_map);
743 wl->target_mem_map = NULL;
744
745 return ret;
746 }
747
748 static void wl1271_irq_ps_regulate_link(struct wl1271 *wl, u8 hlid, u8 tx_blks)
749 {
750 bool fw_ps;
751
752 /* only regulate station links */
753 if (hlid < WL1271_AP_STA_HLID_START)
754 return;
755
756 fw_ps = test_bit(hlid, (unsigned long *)&wl->ap_fw_ps_map);
757
758 /*
759 * Wake up from high level PS if the STA is asleep with too little
760 * blocks in FW or if the STA is awake.
761 */
762 if (!fw_ps || tx_blks < WL1271_PS_STA_MAX_BLOCKS)
763 wl1271_ps_link_end(wl, hlid);
764
765 /* Start high-level PS if the STA is asleep with enough blocks in FW */
766 else if (fw_ps && tx_blks >= WL1271_PS_STA_MAX_BLOCKS)
767 wl1271_ps_link_start(wl, hlid, true);
768 }
769
770 static void wl1271_irq_update_links_status(struct wl1271 *wl,
771 struct wl1271_fw_ap_status *status)
772 {
773 u32 cur_fw_ps_map;
774 u8 hlid;
775
776 cur_fw_ps_map = le32_to_cpu(status->link_ps_bitmap);
777 if (wl->ap_fw_ps_map != cur_fw_ps_map) {
778 wl1271_debug(DEBUG_PSM,
779 "link ps prev 0x%x cur 0x%x changed 0x%x",
780 wl->ap_fw_ps_map, cur_fw_ps_map,
781 wl->ap_fw_ps_map ^ cur_fw_ps_map);
782
783 wl->ap_fw_ps_map = cur_fw_ps_map;
784 }
785
786 for (hlid = WL1271_AP_STA_HLID_START; hlid < AP_MAX_LINKS; hlid++) {
787 u8 cnt = status->tx_lnk_free_blks[hlid] -
788 wl->links[hlid].prev_freed_blks;
789
790 wl->links[hlid].prev_freed_blks =
791 status->tx_lnk_free_blks[hlid];
792 wl->links[hlid].allocated_blks -= cnt;
793
794 wl1271_irq_ps_regulate_link(wl, hlid,
795 wl->links[hlid].allocated_blks);
796 }
797 }
798
799 static void wl1271_fw_status(struct wl1271 *wl,
800 struct wl1271_fw_full_status *full_status)
801 {
802 struct wl1271_fw_common_status *status = &full_status->common;
803 struct timespec ts;
804 u32 old_tx_blk_count = wl->tx_blocks_available;
805 u32 freed_blocks = 0;
806 int i;
807
808 if (wl->bss_type == BSS_TYPE_AP_BSS) {
809 wl1271_raw_read(wl, FW_STATUS_ADDR, status,
810 sizeof(struct wl1271_fw_ap_status), false);
811 } else {
812 wl1271_raw_read(wl, FW_STATUS_ADDR, status,
813 sizeof(struct wl1271_fw_sta_status), false);
814 }
815
816 wl1271_debug(DEBUG_IRQ, "intr: 0x%x (fw_rx_counter = %d, "
817 "drv_rx_counter = %d, tx_results_counter = %d)",
818 status->intr,
819 status->fw_rx_counter,
820 status->drv_rx_counter,
821 status->tx_results_counter);
822
823 /* update number of available TX blocks */
824 for (i = 0; i < NUM_TX_QUEUES; i++) {
825 freed_blocks += le32_to_cpu(status->tx_released_blks[i]) -
826 wl->tx_blocks_freed[i];
827
828 wl->tx_blocks_freed[i] =
829 le32_to_cpu(status->tx_released_blks[i]);
830 }
831
832 wl->tx_allocated_blocks -= freed_blocks;
833
834 if (wl->bss_type == BSS_TYPE_AP_BSS) {
835 /* Update num of allocated TX blocks per link and ps status */
836 wl1271_irq_update_links_status(wl, &full_status->ap);
837 wl->tx_blocks_available += freed_blocks;
838 } else {
839 int avail = full_status->sta.tx_total - wl->tx_allocated_blocks;
840
841 /*
842 * The FW might change the total number of TX memblocks before
843 * we get a notification about blocks being released. Thus, the
844 * available blocks calculation might yield a temporary result
845 * which is lower than the actual available blocks. Keeping in
846 * mind that only blocks that were allocated can be moved from
847 * TX to RX, tx_blocks_available should never decrease here.
848 */
849 wl->tx_blocks_available = max((int)wl->tx_blocks_available,
850 avail);
851 }
852
853 /* if more blocks are available now, tx work can be scheduled */
854 if (wl->tx_blocks_available > old_tx_blk_count)
855 clear_bit(WL1271_FLAG_FW_TX_BUSY, &wl->flags);
856
857 /* update the host-chipset time offset */
858 getnstimeofday(&ts);
859 wl->time_offset = (timespec_to_ns(&ts) >> 10) -
860 (s64)le32_to_cpu(status->fw_localtime);
861 }
862
863 static void wl1271_flush_deferred_work(struct wl1271 *wl)
864 {
865 struct sk_buff *skb;
866
867 /* Pass all received frames to the network stack */
868 while ((skb = skb_dequeue(&wl->deferred_rx_queue)))
869 ieee80211_rx_ni(wl->hw, skb);
870
871 /* Return sent skbs to the network stack */
872 while ((skb = skb_dequeue(&wl->deferred_tx_queue)))
873 ieee80211_tx_status_ni(wl->hw, skb);
874 }
875
876 static void wl1271_netstack_work(struct work_struct *work)
877 {
878 struct wl1271 *wl =
879 container_of(work, struct wl1271, netstack_work);
880
881 do {
882 wl1271_flush_deferred_work(wl);
883 } while (skb_queue_len(&wl->deferred_rx_queue));
884 }
885
886 #define WL1271_IRQ_MAX_LOOPS 256
887
888 irqreturn_t wl1271_irq(int irq, void *cookie)
889 {
890 int ret;
891 u32 intr;
892 int loopcount = WL1271_IRQ_MAX_LOOPS;
893 struct wl1271 *wl = (struct wl1271 *)cookie;
894 bool done = false;
895 unsigned int defer_count;
896 unsigned long flags;
897
898 /* TX might be handled here, avoid redundant work */
899 set_bit(WL1271_FLAG_TX_PENDING, &wl->flags);
900 cancel_work_sync(&wl->tx_work);
901
902 /*
903 * In case edge triggered interrupt must be used, we cannot iterate
904 * more than once without introducing race conditions with the hardirq.
905 */
906 if (wl->platform_quirks & WL12XX_PLATFORM_QUIRK_EDGE_IRQ)
907 loopcount = 1;
908
909 mutex_lock(&wl->mutex);
910
911 wl1271_debug(DEBUG_IRQ, "IRQ work");
912
913 if (unlikely(wl->state == WL1271_STATE_OFF))
914 goto out;
915
916 ret = wl1271_ps_elp_wakeup(wl);
917 if (ret < 0)
918 goto out;
919
920 while (!done && loopcount--) {
921 /*
922 * In order to avoid a race with the hardirq, clear the flag
923 * before acknowledging the chip. Since the mutex is held,
924 * wl1271_ps_elp_wakeup cannot be called concurrently.
925 */
926 clear_bit(WL1271_FLAG_IRQ_RUNNING, &wl->flags);
927 smp_mb__after_clear_bit();
928
929 wl1271_fw_status(wl, wl->fw_status);
930 intr = le32_to_cpu(wl->fw_status->common.intr);
931 intr &= WL1271_INTR_MASK;
932 if (!intr) {
933 done = true;
934 continue;
935 }
936
937 if (unlikely(intr & WL1271_ACX_INTR_WATCHDOG)) {
938 wl1271_error("watchdog interrupt received! "
939 "starting recovery.");
940 ieee80211_queue_work(wl->hw, &wl->recovery_work);
941
942 /* restarting the chip. ignore any other interrupt. */
943 goto out;
944 }
945
946 if (likely(intr & WL1271_ACX_INTR_DATA)) {
947 wl1271_debug(DEBUG_IRQ, "WL1271_ACX_INTR_DATA");
948
949 wl1271_rx(wl, &wl->fw_status->common);
950
951 /* Check if any tx blocks were freed */
952 spin_lock_irqsave(&wl->wl_lock, flags);
953 if (!test_bit(WL1271_FLAG_FW_TX_BUSY, &wl->flags) &&
954 wl->tx_queue_count) {
955 spin_unlock_irqrestore(&wl->wl_lock, flags);
956 /*
957 * In order to avoid starvation of the TX path,
958 * call the work function directly.
959 */
960 wl1271_tx_work_locked(wl);
961 } else {
962 spin_unlock_irqrestore(&wl->wl_lock, flags);
963 }
964
965 /* check for tx results */
966 if (wl->fw_status->common.tx_results_counter !=
967 (wl->tx_results_count & 0xff))
968 wl1271_tx_complete(wl);
969
970 /* Make sure the deferred queues don't get too long */
971 defer_count = skb_queue_len(&wl->deferred_tx_queue) +
972 skb_queue_len(&wl->deferred_rx_queue);
973 if (defer_count > WL1271_DEFERRED_QUEUE_LIMIT)
974 wl1271_flush_deferred_work(wl);
975 }
976
977 if (intr & WL1271_ACX_INTR_EVENT_A) {
978 wl1271_debug(DEBUG_IRQ, "WL1271_ACX_INTR_EVENT_A");
979 wl1271_event_handle(wl, 0);
980 }
981
982 if (intr & WL1271_ACX_INTR_EVENT_B) {
983 wl1271_debug(DEBUG_IRQ, "WL1271_ACX_INTR_EVENT_B");
984 wl1271_event_handle(wl, 1);
985 }
986
987 if (intr & WL1271_ACX_INTR_INIT_COMPLETE)
988 wl1271_debug(DEBUG_IRQ,
989 "WL1271_ACX_INTR_INIT_COMPLETE");
990
991 if (intr & WL1271_ACX_INTR_HW_AVAILABLE)
992 wl1271_debug(DEBUG_IRQ, "WL1271_ACX_INTR_HW_AVAILABLE");
993 }
994
995 wl1271_ps_elp_sleep(wl);
996
997 out:
998 spin_lock_irqsave(&wl->wl_lock, flags);
999 /* In case TX was not handled here, queue TX work */
1000 clear_bit(WL1271_FLAG_TX_PENDING, &wl->flags);
1001 if (!test_bit(WL1271_FLAG_FW_TX_BUSY, &wl->flags) &&
1002 wl->tx_queue_count)
1003 ieee80211_queue_work(wl->hw, &wl->tx_work);
1004 spin_unlock_irqrestore(&wl->wl_lock, flags);
1005
1006 mutex_unlock(&wl->mutex);
1007
1008 return IRQ_HANDLED;
1009 }
1010 EXPORT_SYMBOL_GPL(wl1271_irq);
1011
1012 static int wl1271_fetch_firmware(struct wl1271 *wl)
1013 {
1014 const struct firmware *fw;
1015 const char *fw_name;
1016 int ret;
1017
1018 switch (wl->bss_type) {
1019 case BSS_TYPE_AP_BSS:
1020 if (wl->chip.id == CHIP_ID_1283_PG20)
1021 fw_name = WL128X_AP_FW_NAME;
1022 else
1023 fw_name = WL127X_AP_FW_NAME;
1024 break;
1025 case BSS_TYPE_IBSS:
1026 case BSS_TYPE_STA_BSS:
1027 if (wl->chip.id == CHIP_ID_1283_PG20)
1028 fw_name = WL128X_FW_NAME;
1029 else
1030 fw_name = WL1271_FW_NAME;
1031 break;
1032 default:
1033 wl1271_error("no compatible firmware for bss_type %d",
1034 wl->bss_type);
1035 return -EINVAL;
1036 }
1037
1038 wl1271_debug(DEBUG_BOOT, "booting firmware %s", fw_name);
1039
1040 ret = request_firmware(&fw, fw_name, wl1271_wl_to_dev(wl));
1041
1042 if (ret < 0) {
1043 wl1271_error("could not get firmware: %d", ret);
1044 return ret;
1045 }
1046
1047 if (fw->size % 4) {
1048 wl1271_error("firmware size is not multiple of 32 bits: %zu",
1049 fw->size);
1050 ret = -EILSEQ;
1051 goto out;
1052 }
1053
1054 vfree(wl->fw);
1055 wl->fw_len = fw->size;
1056 wl->fw = vmalloc(wl->fw_len);
1057
1058 if (!wl->fw) {
1059 wl1271_error("could not allocate memory for the firmware");
1060 ret = -ENOMEM;
1061 goto out;
1062 }
1063
1064 memcpy(wl->fw, fw->data, wl->fw_len);
1065 wl->fw_bss_type = wl->bss_type;
1066 ret = 0;
1067
1068 out:
1069 release_firmware(fw);
1070
1071 return ret;
1072 }
1073
1074 static int wl1271_fetch_nvs(struct wl1271 *wl)
1075 {
1076 const struct firmware *fw;
1077 int ret;
1078
1079 ret = request_firmware(&fw, WL12XX_NVS_NAME, wl1271_wl_to_dev(wl));
1080
1081 if (ret < 0) {
1082 wl1271_error("could not get nvs file: %d", ret);
1083 return ret;
1084 }
1085
1086 wl->nvs = kmemdup(fw->data, fw->size, GFP_KERNEL);
1087
1088 if (!wl->nvs) {
1089 wl1271_error("could not allocate memory for the nvs file");
1090 ret = -ENOMEM;
1091 goto out;
1092 }
1093
1094 wl->nvs_len = fw->size;
1095
1096 out:
1097 release_firmware(fw);
1098
1099 return ret;
1100 }
1101
1102 static void wl1271_recovery_work(struct work_struct *work)
1103 {
1104 struct wl1271 *wl =
1105 container_of(work, struct wl1271, recovery_work);
1106
1107 mutex_lock(&wl->mutex);
1108
1109 if (wl->state != WL1271_STATE_ON)
1110 goto out;
1111
1112 wl1271_info("Hardware recovery in progress. FW ver: %s pc: 0x%x",
1113 wl->chip.fw_ver_str, wl1271_read32(wl, SCR_PAD4));
1114
1115 if (test_bit(WL1271_FLAG_STA_ASSOCIATED, &wl->flags))
1116 ieee80211_connection_loss(wl->vif);
1117
1118 /* Prevent spurious TX during FW restart */
1119 ieee80211_stop_queues(wl->hw);
1120
1121 if (wl->sched_scanning) {
1122 ieee80211_sched_scan_stopped(wl->hw);
1123 wl->sched_scanning = false;
1124 }
1125
1126 /* reboot the chipset */
1127 __wl1271_op_remove_interface(wl, false);
1128 ieee80211_restart_hw(wl->hw);
1129
1130 /*
1131 * Its safe to enable TX now - the queues are stopped after a request
1132 * to restart the HW.
1133 */
1134 ieee80211_wake_queues(wl->hw);
1135
1136 out:
1137 mutex_unlock(&wl->mutex);
1138 }
1139
1140 static void wl1271_fw_wakeup(struct wl1271 *wl)
1141 {
1142 u32 elp_reg;
1143
1144 elp_reg = ELPCTRL_WAKE_UP;
1145 wl1271_raw_write32(wl, HW_ACCESS_ELP_CTRL_REG_ADDR, elp_reg);
1146 }
1147
1148 static int wl1271_setup(struct wl1271 *wl)
1149 {
1150 wl->fw_status = kmalloc(sizeof(*wl->fw_status), GFP_KERNEL);
1151 if (!wl->fw_status)
1152 return -ENOMEM;
1153
1154 wl->tx_res_if = kmalloc(sizeof(*wl->tx_res_if), GFP_KERNEL);
1155 if (!wl->tx_res_if) {
1156 kfree(wl->fw_status);
1157 return -ENOMEM;
1158 }
1159
1160 return 0;
1161 }
1162
1163 static int wl1271_chip_wakeup(struct wl1271 *wl)
1164 {
1165 struct wl1271_partition_set partition;
1166 int ret = 0;
1167
1168 msleep(WL1271_PRE_POWER_ON_SLEEP);
1169 ret = wl1271_power_on(wl);
1170 if (ret < 0)
1171 goto out;
1172 msleep(WL1271_POWER_ON_SLEEP);
1173 wl1271_io_reset(wl);
1174 wl1271_io_init(wl);
1175
1176 /* We don't need a real memory partition here, because we only want
1177 * to use the registers at this point. */
1178 memset(&partition, 0, sizeof(partition));
1179 partition.reg.start = REGISTERS_BASE;
1180 partition.reg.size = REGISTERS_DOWN_SIZE;
1181 wl1271_set_partition(wl, &partition);
1182
1183 /* ELP module wake up */
1184 wl1271_fw_wakeup(wl);
1185
1186 /* whal_FwCtrl_BootSm() */
1187
1188 /* 0. read chip id from CHIP_ID */
1189 wl->chip.id = wl1271_read32(wl, CHIP_ID_B);
1190
1191 /* 1. check if chip id is valid */
1192
1193 switch (wl->chip.id) {
1194 case CHIP_ID_1271_PG10:
1195 wl1271_warning("chip id 0x%x (1271 PG10) support is obsolete",
1196 wl->chip.id);
1197
1198 ret = wl1271_setup(wl);
1199 if (ret < 0)
1200 goto out;
1201 break;
1202 case CHIP_ID_1271_PG20:
1203 wl1271_debug(DEBUG_BOOT, "chip id 0x%x (1271 PG20)",
1204 wl->chip.id);
1205
1206 /*
1207 * 'end-of-transaction flag' and 'LPD mode flag'
1208 * should be set in wl127x AP mode only
1209 */
1210 if (wl->bss_type == BSS_TYPE_AP_BSS)
1211 wl->quirks |= (WL12XX_QUIRK_END_OF_TRANSACTION |
1212 WL12XX_QUIRK_LPD_MODE);
1213
1214 ret = wl1271_setup(wl);
1215 if (ret < 0)
1216 goto out;
1217 break;
1218 case CHIP_ID_1283_PG20:
1219 wl1271_debug(DEBUG_BOOT, "chip id 0x%x (1283 PG20)",
1220 wl->chip.id);
1221
1222 ret = wl1271_setup(wl);
1223 if (ret < 0)
1224 goto out;
1225
1226 if (wl1271_set_block_size(wl))
1227 wl->quirks |= WL12XX_QUIRK_BLOCKSIZE_ALIGNMENT;
1228 break;
1229 case CHIP_ID_1283_PG10:
1230 default:
1231 wl1271_warning("unsupported chip id: 0x%x", wl->chip.id);
1232 ret = -ENODEV;
1233 goto out;
1234 }
1235
1236 /* Make sure the firmware type matches the BSS type */
1237 if (wl->fw == NULL || wl->fw_bss_type != wl->bss_type) {
1238 ret = wl1271_fetch_firmware(wl);
1239 if (ret < 0)
1240 goto out;
1241 }
1242
1243 /* No NVS from netlink, try to get it from the filesystem */
1244 if (wl->nvs == NULL) {
1245 ret = wl1271_fetch_nvs(wl);
1246 if (ret < 0)
1247 goto out;
1248 }
1249
1250 out:
1251 return ret;
1252 }
1253
1254 static unsigned int wl1271_get_fw_ver_quirks(struct wl1271 *wl)
1255 {
1256 unsigned int quirks = 0;
1257 unsigned int *fw_ver = wl->chip.fw_ver;
1258
1259 /* Only for wl127x */
1260 if ((fw_ver[FW_VER_CHIP] == FW_VER_CHIP_WL127X) &&
1261 /* Check STA version */
1262 (((fw_ver[FW_VER_IF_TYPE] == FW_VER_IF_TYPE_STA) &&
1263 (fw_ver[FW_VER_MINOR] < FW_VER_MINOR_1_SPARE_STA_MIN)) ||
1264 /* Check AP version */
1265 ((fw_ver[FW_VER_IF_TYPE] == FW_VER_IF_TYPE_AP) &&
1266 (fw_ver[FW_VER_MINOR] < FW_VER_MINOR_1_SPARE_AP_MIN))))
1267 quirks |= WL12XX_QUIRK_USE_2_SPARE_BLOCKS;
1268
1269 return quirks;
1270 }
1271
1272 int wl1271_plt_start(struct wl1271 *wl)
1273 {
1274 int retries = WL1271_BOOT_RETRIES;
1275 int ret;
1276
1277 mutex_lock(&wl->mutex);
1278
1279 wl1271_notice("power up");
1280
1281 if (wl->state != WL1271_STATE_OFF) {
1282 wl1271_error("cannot go into PLT state because not "
1283 "in off state: %d", wl->state);
1284 ret = -EBUSY;
1285 goto out;
1286 }
1287
1288 wl->bss_type = BSS_TYPE_STA_BSS;
1289
1290 while (retries) {
1291 retries--;
1292 ret = wl1271_chip_wakeup(wl);
1293 if (ret < 0)
1294 goto power_off;
1295
1296 ret = wl1271_boot(wl);
1297 if (ret < 0)
1298 goto power_off;
1299
1300 ret = wl1271_plt_init(wl);
1301 if (ret < 0)
1302 goto irq_disable;
1303
1304 wl->state = WL1271_STATE_PLT;
1305 wl1271_notice("firmware booted in PLT mode (%s)",
1306 wl->chip.fw_ver_str);
1307
1308 /* Check if any quirks are needed with older fw versions */
1309 wl->quirks |= wl1271_get_fw_ver_quirks(wl);
1310 goto out;
1311
1312 irq_disable:
1313 mutex_unlock(&wl->mutex);
1314 /* Unlocking the mutex in the middle of handling is
1315 inherently unsafe. In this case we deem it safe to do,
1316 because we need to let any possibly pending IRQ out of
1317 the system (and while we are WL1271_STATE_OFF the IRQ
1318 work function will not do anything.) Also, any other
1319 possible concurrent operations will fail due to the
1320 current state, hence the wl1271 struct should be safe. */
1321 wl1271_disable_interrupts(wl);
1322 wl1271_flush_deferred_work(wl);
1323 cancel_work_sync(&wl->netstack_work);
1324 mutex_lock(&wl->mutex);
1325 power_off:
1326 wl1271_power_off(wl);
1327 }
1328
1329 wl1271_error("firmware boot in PLT mode failed despite %d retries",
1330 WL1271_BOOT_RETRIES);
1331 out:
1332 mutex_unlock(&wl->mutex);
1333
1334 return ret;
1335 }
1336
1337 static int __wl1271_plt_stop(struct wl1271 *wl)
1338 {
1339 int ret = 0;
1340
1341 wl1271_notice("power down");
1342
1343 if (wl->state != WL1271_STATE_PLT) {
1344 wl1271_error("cannot power down because not in PLT "
1345 "state: %d", wl->state);
1346 ret = -EBUSY;
1347 goto out;
1348 }
1349
1350 wl1271_power_off(wl);
1351
1352 wl->state = WL1271_STATE_OFF;
1353 wl->rx_counter = 0;
1354
1355 mutex_unlock(&wl->mutex);
1356 wl1271_disable_interrupts(wl);
1357 wl1271_flush_deferred_work(wl);
1358 cancel_work_sync(&wl->netstack_work);
1359 cancel_work_sync(&wl->recovery_work);
1360 mutex_lock(&wl->mutex);
1361 out:
1362 return ret;
1363 }
1364
1365 int wl1271_plt_stop(struct wl1271 *wl)
1366 {
1367 int ret;
1368
1369 mutex_lock(&wl->mutex);
1370 ret = __wl1271_plt_stop(wl);
1371 mutex_unlock(&wl->mutex);
1372 return ret;
1373 }
1374
1375 static void wl1271_op_tx(struct ieee80211_hw *hw, struct sk_buff *skb)
1376 {
1377 struct wl1271 *wl = hw->priv;
1378 unsigned long flags;
1379 int q;
1380 u8 hlid = 0;
1381
1382 q = wl1271_tx_get_queue(skb_get_queue_mapping(skb));
1383
1384 if (wl->bss_type == BSS_TYPE_AP_BSS)
1385 hlid = wl1271_tx_get_hlid(skb);
1386
1387 spin_lock_irqsave(&wl->wl_lock, flags);
1388
1389 wl->tx_queue_count++;
1390
1391 /*
1392 * The workqueue is slow to process the tx_queue and we need stop
1393 * the queue here, otherwise the queue will get too long.
1394 */
1395 if (wl->tx_queue_count >= WL1271_TX_QUEUE_HIGH_WATERMARK) {
1396 wl1271_debug(DEBUG_TX, "op_tx: stopping queues");
1397 ieee80211_stop_queues(wl->hw);
1398 set_bit(WL1271_FLAG_TX_QUEUE_STOPPED, &wl->flags);
1399 }
1400
1401 /* queue the packet */
1402 if (wl->bss_type == BSS_TYPE_AP_BSS) {
1403 wl1271_debug(DEBUG_TX, "queue skb hlid %d q %d", hlid, q);
1404 skb_queue_tail(&wl->links[hlid].tx_queue[q], skb);
1405 } else {
1406 skb_queue_tail(&wl->tx_queue[q], skb);
1407 }
1408
1409 /*
1410 * The chip specific setup must run before the first TX packet -
1411 * before that, the tx_work will not be initialized!
1412 */
1413
1414 if (!test_bit(WL1271_FLAG_FW_TX_BUSY, &wl->flags) &&
1415 !test_bit(WL1271_FLAG_TX_PENDING, &wl->flags))
1416 ieee80211_queue_work(wl->hw, &wl->tx_work);
1417
1418 spin_unlock_irqrestore(&wl->wl_lock, flags);
1419 }
1420
1421 int wl1271_tx_dummy_packet(struct wl1271 *wl)
1422 {
1423 unsigned long flags;
1424
1425 spin_lock_irqsave(&wl->wl_lock, flags);
1426 set_bit(WL1271_FLAG_DUMMY_PACKET_PENDING, &wl->flags);
1427 wl->tx_queue_count++;
1428 spin_unlock_irqrestore(&wl->wl_lock, flags);
1429
1430 /* The FW is low on RX memory blocks, so send the dummy packet asap */
1431 if (!test_bit(WL1271_FLAG_FW_TX_BUSY, &wl->flags))
1432 wl1271_tx_work_locked(wl);
1433
1434 /*
1435 * If the FW TX is busy, TX work will be scheduled by the threaded
1436 * interrupt handler function
1437 */
1438 return 0;
1439 }
1440
1441 /*
1442 * The size of the dummy packet should be at least 1400 bytes. However, in
1443 * order to minimize the number of bus transactions, aligning it to 512 bytes
1444 * boundaries could be beneficial, performance wise
1445 */
1446 #define TOTAL_TX_DUMMY_PACKET_SIZE (ALIGN(1400, 512))
1447
1448 static struct sk_buff *wl12xx_alloc_dummy_packet(struct wl1271 *wl)
1449 {
1450 struct sk_buff *skb;
1451 struct ieee80211_hdr_3addr *hdr;
1452 unsigned int dummy_packet_size;
1453
1454 dummy_packet_size = TOTAL_TX_DUMMY_PACKET_SIZE -
1455 sizeof(struct wl1271_tx_hw_descr) - sizeof(*hdr);
1456
1457 skb = dev_alloc_skb(TOTAL_TX_DUMMY_PACKET_SIZE);
1458 if (!skb) {
1459 wl1271_warning("Failed to allocate a dummy packet skb");
1460 return NULL;
1461 }
1462
1463 skb_reserve(skb, sizeof(struct wl1271_tx_hw_descr));
1464
1465 hdr = (struct ieee80211_hdr_3addr *) skb_put(skb, sizeof(*hdr));
1466 memset(hdr, 0, sizeof(*hdr));
1467 hdr->frame_control = cpu_to_le16(IEEE80211_FTYPE_DATA |
1468 IEEE80211_STYPE_NULLFUNC |
1469 IEEE80211_FCTL_TODS);
1470
1471 memset(skb_put(skb, dummy_packet_size), 0, dummy_packet_size);
1472
1473 /* Dummy packets require the TID to be management */
1474 skb->priority = WL1271_TID_MGMT;
1475
1476 /* Initialize all fields that might be used */
1477 skb_set_queue_mapping(skb, 0);
1478 memset(IEEE80211_SKB_CB(skb), 0, sizeof(struct ieee80211_tx_info));
1479
1480 return skb;
1481 }
1482
1483
1484 static struct notifier_block wl1271_dev_notifier = {
1485 .notifier_call = wl1271_dev_notify,
1486 };
1487
1488 #ifdef CONFIG_PM
1489 static int wl1271_configure_suspend_sta(struct wl1271 *wl)
1490 {
1491 int ret;
1492
1493 mutex_lock(&wl->mutex);
1494
1495 ret = wl1271_ps_elp_wakeup(wl);
1496 if (ret < 0)
1497 goto out_unlock;
1498
1499 /* enter psm if needed*/
1500 if (!test_bit(WL1271_FLAG_PSM, &wl->flags)) {
1501 DECLARE_COMPLETION_ONSTACK(compl);
1502
1503 wl->ps_compl = &compl;
1504 ret = wl1271_ps_set_mode(wl, STATION_POWER_SAVE_MODE,
1505 wl->basic_rate, true);
1506 if (ret < 0)
1507 goto out_sleep;
1508
1509 /* we must unlock here so we will be able to get events */
1510 wl1271_ps_elp_sleep(wl);
1511 mutex_unlock(&wl->mutex);
1512
1513 ret = wait_for_completion_timeout(
1514 &compl, msecs_to_jiffies(WL1271_PS_COMPLETE_TIMEOUT));
1515 if (ret <= 0) {
1516 wl1271_warning("couldn't enter ps mode!");
1517 ret = -EBUSY;
1518 goto out;
1519 }
1520
1521 /* take mutex again, and wakeup */
1522 mutex_lock(&wl->mutex);
1523
1524 ret = wl1271_ps_elp_wakeup(wl);
1525 if (ret < 0)
1526 goto out_unlock;
1527 }
1528 out_sleep:
1529 wl1271_ps_elp_sleep(wl);
1530 out_unlock:
1531 mutex_unlock(&wl->mutex);
1532 out:
1533 return ret;
1534
1535 }
1536
1537 static int wl1271_configure_suspend_ap(struct wl1271 *wl)
1538 {
1539 int ret;
1540
1541 mutex_lock(&wl->mutex);
1542
1543 ret = wl1271_ps_elp_wakeup(wl);
1544 if (ret < 0)
1545 goto out_unlock;
1546
1547 ret = wl1271_acx_set_ap_beacon_filter(wl, true);
1548
1549 wl1271_ps_elp_sleep(wl);
1550 out_unlock:
1551 mutex_unlock(&wl->mutex);
1552 return ret;
1553
1554 }
1555
1556 static int wl1271_configure_suspend(struct wl1271 *wl)
1557 {
1558 if (wl->bss_type == BSS_TYPE_STA_BSS)
1559 return wl1271_configure_suspend_sta(wl);
1560 if (wl->bss_type == BSS_TYPE_AP_BSS)
1561 return wl1271_configure_suspend_ap(wl);
1562 return 0;
1563 }
1564
1565 static void wl1271_configure_resume(struct wl1271 *wl)
1566 {
1567 int ret;
1568 bool is_sta = wl->bss_type == BSS_TYPE_STA_BSS;
1569 bool is_ap = wl->bss_type == BSS_TYPE_AP_BSS;
1570
1571 if (!is_sta && !is_ap)
1572 return;
1573
1574 mutex_lock(&wl->mutex);
1575 ret = wl1271_ps_elp_wakeup(wl);
1576 if (ret < 0)
1577 goto out;
1578
1579 if (is_sta) {
1580 /* exit psm if it wasn't configured */
1581 if (!test_bit(WL1271_FLAG_PSM_REQUESTED, &wl->flags))
1582 wl1271_ps_set_mode(wl, STATION_ACTIVE_MODE,
1583 wl->basic_rate, true);
1584 } else if (is_ap) {
1585 wl1271_acx_set_ap_beacon_filter(wl, false);
1586 }
1587
1588 wl1271_ps_elp_sleep(wl);
1589 out:
1590 mutex_unlock(&wl->mutex);
1591 }
1592
1593 static int wl1271_op_suspend(struct ieee80211_hw *hw,
1594 struct cfg80211_wowlan *wow)
1595 {
1596 struct wl1271 *wl = hw->priv;
1597 int ret;
1598
1599 wl1271_debug(DEBUG_MAC80211, "mac80211 suspend wow=%d", !!wow);
1600 WARN_ON(!wow || !wow->any);
1601
1602 wl->wow_enabled = true;
1603 ret = wl1271_configure_suspend(wl);
1604 if (ret < 0) {
1605 wl1271_warning("couldn't prepare device to suspend");
1606 return ret;
1607 }
1608 /* flush any remaining work */
1609 wl1271_debug(DEBUG_MAC80211, "flushing remaining works");
1610 flush_delayed_work(&wl->scan_complete_work);
1611
1612 /*
1613 * disable and re-enable interrupts in order to flush
1614 * the threaded_irq
1615 */
1616 wl1271_disable_interrupts(wl);
1617
1618 /*
1619 * set suspended flag to avoid triggering a new threaded_irq
1620 * work. no need for spinlock as interrupts are disabled.
1621 */
1622 set_bit(WL1271_FLAG_SUSPENDED, &wl->flags);
1623
1624 wl1271_enable_interrupts(wl);
1625 flush_work(&wl->tx_work);
1626 flush_delayed_work(&wl->pspoll_work);
1627 flush_delayed_work(&wl->elp_work);
1628
1629 return 0;
1630 }
1631
1632 static int wl1271_op_resume(struct ieee80211_hw *hw)
1633 {
1634 struct wl1271 *wl = hw->priv;
1635 unsigned long flags;
1636 bool run_irq_work = false;
1637
1638 wl1271_debug(DEBUG_MAC80211, "mac80211 resume wow=%d",
1639 wl->wow_enabled);
1640 WARN_ON(!wl->wow_enabled);
1641
1642 /*
1643 * re-enable irq_work enqueuing, and call irq_work directly if
1644 * there is a pending work.
1645 */
1646 spin_lock_irqsave(&wl->wl_lock, flags);
1647 clear_bit(WL1271_FLAG_SUSPENDED, &wl->flags);
1648 if (test_and_clear_bit(WL1271_FLAG_PENDING_WORK, &wl->flags))
1649 run_irq_work = true;
1650 spin_unlock_irqrestore(&wl->wl_lock, flags);
1651
1652 if (run_irq_work) {
1653 wl1271_debug(DEBUG_MAC80211,
1654 "run postponed irq_work directly");
1655 wl1271_irq(0, wl);
1656 wl1271_enable_interrupts(wl);
1657 }
1658 wl1271_configure_resume(wl);
1659 wl->wow_enabled = false;
1660
1661 return 0;
1662 }
1663 #endif
1664
1665 static int wl1271_op_start(struct ieee80211_hw *hw)
1666 {
1667 wl1271_debug(DEBUG_MAC80211, "mac80211 start");
1668
1669 /*
1670 * We have to delay the booting of the hardware because
1671 * we need to know the local MAC address before downloading and
1672 * initializing the firmware. The MAC address cannot be changed
1673 * after boot, and without the proper MAC address, the firmware
1674 * will not function properly.
1675 *
1676 * The MAC address is first known when the corresponding interface
1677 * is added. That is where we will initialize the hardware.
1678 *
1679 * In addition, we currently have different firmwares for AP and managed
1680 * operation. We will know which to boot according to interface type.
1681 */
1682
1683 return 0;
1684 }
1685
1686 static void wl1271_op_stop(struct ieee80211_hw *hw)
1687 {
1688 wl1271_debug(DEBUG_MAC80211, "mac80211 stop");
1689 }
1690
1691 static int wl1271_op_add_interface(struct ieee80211_hw *hw,
1692 struct ieee80211_vif *vif)
1693 {
1694 struct wl1271 *wl = hw->priv;
1695 struct wiphy *wiphy = hw->wiphy;
1696 int retries = WL1271_BOOT_RETRIES;
1697 int ret = 0;
1698 bool booted = false;
1699
1700 wl1271_debug(DEBUG_MAC80211, "mac80211 add interface type %d mac %pM",
1701 vif->type, vif->addr);
1702
1703 mutex_lock(&wl->mutex);
1704 if (wl->vif) {
1705 wl1271_debug(DEBUG_MAC80211,
1706 "multiple vifs are not supported yet");
1707 ret = -EBUSY;
1708 goto out;
1709 }
1710
1711 /*
1712 * in some very corner case HW recovery scenarios its possible to
1713 * get here before __wl1271_op_remove_interface is complete, so
1714 * opt out if that is the case.
1715 */
1716 if (test_bit(WL1271_FLAG_IF_INITIALIZED, &wl->flags)) {
1717 ret = -EBUSY;
1718 goto out;
1719 }
1720
1721 switch (vif->type) {
1722 case NL80211_IFTYPE_STATION:
1723 wl->bss_type = BSS_TYPE_STA_BSS;
1724 wl->set_bss_type = BSS_TYPE_STA_BSS;
1725 break;
1726 case NL80211_IFTYPE_ADHOC:
1727 wl->bss_type = BSS_TYPE_IBSS;
1728 wl->set_bss_type = BSS_TYPE_STA_BSS;
1729 break;
1730 case NL80211_IFTYPE_AP:
1731 wl->bss_type = BSS_TYPE_AP_BSS;
1732 break;
1733 default:
1734 ret = -EOPNOTSUPP;
1735 goto out;
1736 }
1737
1738 memcpy(wl->mac_addr, vif->addr, ETH_ALEN);
1739
1740 if (wl->state != WL1271_STATE_OFF) {
1741 wl1271_error("cannot start because not in off state: %d",
1742 wl->state);
1743 ret = -EBUSY;
1744 goto out;
1745 }
1746
1747 while (retries) {
1748 retries--;
1749 ret = wl1271_chip_wakeup(wl);
1750 if (ret < 0)
1751 goto power_off;
1752
1753 ret = wl1271_boot(wl);
1754 if (ret < 0)
1755 goto power_off;
1756
1757 ret = wl1271_hw_init(wl);
1758 if (ret < 0)
1759 goto irq_disable;
1760
1761 booted = true;
1762 break;
1763
1764 irq_disable:
1765 mutex_unlock(&wl->mutex);
1766 /* Unlocking the mutex in the middle of handling is
1767 inherently unsafe. In this case we deem it safe to do,
1768 because we need to let any possibly pending IRQ out of
1769 the system (and while we are WL1271_STATE_OFF the IRQ
1770 work function will not do anything.) Also, any other
1771 possible concurrent operations will fail due to the
1772 current state, hence the wl1271 struct should be safe. */
1773 wl1271_disable_interrupts(wl);
1774 wl1271_flush_deferred_work(wl);
1775 cancel_work_sync(&wl->netstack_work);
1776 mutex_lock(&wl->mutex);
1777 power_off:
1778 wl1271_power_off(wl);
1779 }
1780
1781 if (!booted) {
1782 wl1271_error("firmware boot failed despite %d retries",
1783 WL1271_BOOT_RETRIES);
1784 goto out;
1785 }
1786
1787 wl->vif = vif;
1788 wl->state = WL1271_STATE_ON;
1789 set_bit(WL1271_FLAG_IF_INITIALIZED, &wl->flags);
1790 wl1271_info("firmware booted (%s)", wl->chip.fw_ver_str);
1791
1792 /* update hw/fw version info in wiphy struct */
1793 wiphy->hw_version = wl->chip.id;
1794 strncpy(wiphy->fw_version, wl->chip.fw_ver_str,
1795 sizeof(wiphy->fw_version));
1796
1797 /* Check if any quirks are needed with older fw versions */
1798 wl->quirks |= wl1271_get_fw_ver_quirks(wl);
1799
1800 /*
1801 * Now we know if 11a is supported (info from the NVS), so disable
1802 * 11a channels if not supported
1803 */
1804 if (!wl->enable_11a)
1805 wiphy->bands[IEEE80211_BAND_5GHZ]->n_channels = 0;
1806
1807 wl1271_debug(DEBUG_MAC80211, "11a is %ssupported",
1808 wl->enable_11a ? "" : "not ");
1809
1810 out:
1811 mutex_unlock(&wl->mutex);
1812
1813 mutex_lock(&wl_list_mutex);
1814 if (!ret)
1815 list_add(&wl->list, &wl_list);
1816 mutex_unlock(&wl_list_mutex);
1817
1818 return ret;
1819 }
1820
1821 static void __wl1271_op_remove_interface(struct wl1271 *wl,
1822 bool reset_tx_queues)
1823 {
1824 int i;
1825
1826 wl1271_debug(DEBUG_MAC80211, "mac80211 remove interface");
1827
1828 /* because of hardware recovery, we may get here twice */
1829 if (wl->state != WL1271_STATE_ON)
1830 return;
1831
1832 wl1271_info("down");
1833
1834 mutex_lock(&wl_list_mutex);
1835 list_del(&wl->list);
1836 mutex_unlock(&wl_list_mutex);
1837
1838 /* enable dyn ps just in case (if left on due to fw crash etc) */
1839 if (wl->bss_type == BSS_TYPE_STA_BSS)
1840 ieee80211_enable_dyn_ps(wl->vif);
1841
1842 if (wl->scan.state != WL1271_SCAN_STATE_IDLE) {
1843 wl->scan.state = WL1271_SCAN_STATE_IDLE;
1844 memset(wl->scan.scanned_ch, 0, sizeof(wl->scan.scanned_ch));
1845 wl->scan.req = NULL;
1846 ieee80211_scan_completed(wl->hw, true);
1847 }
1848
1849 /*
1850 * this must be before the cancel_work calls below, so that the work
1851 * functions don't perform further work.
1852 */
1853 wl->state = WL1271_STATE_OFF;
1854
1855 mutex_unlock(&wl->mutex);
1856
1857 wl1271_disable_interrupts(wl);
1858 wl1271_flush_deferred_work(wl);
1859 cancel_delayed_work_sync(&wl->scan_complete_work);
1860 cancel_work_sync(&wl->netstack_work);
1861 cancel_work_sync(&wl->tx_work);
1862 del_timer_sync(&wl->rx_streaming_timer);
1863 cancel_work_sync(&wl->rx_streaming_enable_work);
1864 cancel_work_sync(&wl->rx_streaming_disable_work);
1865 cancel_delayed_work_sync(&wl->pspoll_work);
1866 cancel_delayed_work_sync(&wl->elp_work);
1867
1868 mutex_lock(&wl->mutex);
1869
1870 /* let's notify MAC80211 about the remaining pending TX frames */
1871 wl1271_tx_reset(wl, reset_tx_queues);
1872 wl1271_power_off(wl);
1873
1874 memset(wl->bssid, 0, ETH_ALEN);
1875 memset(wl->ssid, 0, IW_ESSID_MAX_SIZE + 1);
1876 wl->ssid_len = 0;
1877 wl->bss_type = MAX_BSS_TYPE;
1878 wl->set_bss_type = MAX_BSS_TYPE;
1879 wl->band = IEEE80211_BAND_2GHZ;
1880
1881 wl->rx_counter = 0;
1882 wl->psm_entry_retry = 0;
1883 wl->power_level = WL1271_DEFAULT_POWER_LEVEL;
1884 wl->tx_blocks_available = 0;
1885 wl->tx_allocated_blocks = 0;
1886 wl->tx_results_count = 0;
1887 wl->tx_packets_count = 0;
1888 wl->tx_security_last_seq = 0;
1889 wl->tx_security_seq = 0;
1890 wl->time_offset = 0;
1891 wl->session_counter = 0;
1892 wl->rate_set = CONF_TX_RATE_MASK_BASIC;
1893 wl->vif = NULL;
1894 wl->filters = 0;
1895 wl1271_free_ap_keys(wl);
1896 memset(wl->ap_hlid_map, 0, sizeof(wl->ap_hlid_map));
1897 wl->ap_fw_ps_map = 0;
1898 wl->ap_ps_map = 0;
1899 wl->sched_scanning = false;
1900
1901 /*
1902 * this is performed after the cancel_work calls and the associated
1903 * mutex_lock, so that wl1271_op_add_interface does not accidentally
1904 * get executed before all these vars have been reset.
1905 */
1906 wl->flags = 0;
1907
1908 for (i = 0; i < NUM_TX_QUEUES; i++)
1909 wl->tx_blocks_freed[i] = 0;
1910
1911 wl1271_debugfs_reset(wl);
1912
1913 kfree(wl->fw_status);
1914 wl->fw_status = NULL;
1915 kfree(wl->tx_res_if);
1916 wl->tx_res_if = NULL;
1917 kfree(wl->target_mem_map);
1918 wl->target_mem_map = NULL;
1919 }
1920
1921 static void wl1271_op_remove_interface(struct ieee80211_hw *hw,
1922 struct ieee80211_vif *vif)
1923 {
1924 struct wl1271 *wl = hw->priv;
1925
1926 mutex_lock(&wl->mutex);
1927 /*
1928 * wl->vif can be null here if someone shuts down the interface
1929 * just when hardware recovery has been started.
1930 */
1931 if (wl->vif) {
1932 WARN_ON(wl->vif != vif);
1933 __wl1271_op_remove_interface(wl, true);
1934 }
1935
1936 mutex_unlock(&wl->mutex);
1937 cancel_work_sync(&wl->recovery_work);
1938 }
1939
1940 void wl1271_configure_filters(struct wl1271 *wl, unsigned int filters)
1941 {
1942 wl1271_set_default_filters(wl);
1943
1944 /* combine requested filters with current filter config */
1945 filters = wl->filters | filters;
1946
1947 wl1271_debug(DEBUG_FILTERS, "RX filters set: ");
1948
1949 if (filters & FIF_PROMISC_IN_BSS) {
1950 wl1271_debug(DEBUG_FILTERS, " - FIF_PROMISC_IN_BSS");
1951 wl->rx_config &= ~CFG_UNI_FILTER_EN;
1952 wl->rx_config |= CFG_BSSID_FILTER_EN;
1953 }
1954 if (filters & FIF_BCN_PRBRESP_PROMISC) {
1955 wl1271_debug(DEBUG_FILTERS, " - FIF_BCN_PRBRESP_PROMISC");
1956 wl->rx_config &= ~CFG_BSSID_FILTER_EN;
1957 wl->rx_config &= ~CFG_SSID_FILTER_EN;
1958 }
1959 if (filters & FIF_OTHER_BSS) {
1960 wl1271_debug(DEBUG_FILTERS, " - FIF_OTHER_BSS");
1961 wl->rx_config &= ~CFG_BSSID_FILTER_EN;
1962 }
1963 if (filters & FIF_CONTROL) {
1964 wl1271_debug(DEBUG_FILTERS, " - FIF_CONTROL");
1965 wl->rx_filter |= CFG_RX_CTL_EN;
1966 }
1967 if (filters & FIF_FCSFAIL) {
1968 wl1271_debug(DEBUG_FILTERS, " - FIF_FCSFAIL");
1969 wl->rx_filter |= CFG_RX_FCS_ERROR;
1970 }
1971 }
1972
1973 static int wl1271_dummy_join(struct wl1271 *wl)
1974 {
1975 int ret = 0;
1976 /* we need to use a dummy BSSID for now */
1977 static const u8 dummy_bssid[ETH_ALEN] = { 0x0b, 0xad, 0xde,
1978 0xad, 0xbe, 0xef };
1979
1980 memcpy(wl->bssid, dummy_bssid, ETH_ALEN);
1981
1982 /* pass through frames from all BSS */
1983 wl1271_configure_filters(wl, FIF_OTHER_BSS);
1984
1985 ret = wl1271_cmd_join(wl, wl->set_bss_type);
1986 if (ret < 0)
1987 goto out;
1988
1989 set_bit(WL1271_FLAG_JOINED, &wl->flags);
1990
1991 out:
1992 return ret;
1993 }
1994
1995 static int wl1271_join(struct wl1271 *wl, bool set_assoc)
1996 {
1997 int ret;
1998
1999 /*
2000 * One of the side effects of the JOIN command is that is clears
2001 * WPA/WPA2 keys from the chipset. Performing a JOIN while associated
2002 * to a WPA/WPA2 access point will therefore kill the data-path.
2003 * Currently the only valid scenario for JOIN during association
2004 * is on roaming, in which case we will also be given new keys.
2005 * Keep the below message for now, unless it starts bothering
2006 * users who really like to roam a lot :)
2007 */
2008 if (test_bit(WL1271_FLAG_STA_ASSOCIATED, &wl->flags))
2009 wl1271_info("JOIN while associated.");
2010
2011 if (set_assoc)
2012 set_bit(WL1271_FLAG_STA_ASSOCIATED, &wl->flags);
2013
2014 ret = wl1271_cmd_join(wl, wl->set_bss_type);
2015 if (ret < 0)
2016 goto out;
2017
2018 set_bit(WL1271_FLAG_JOINED, &wl->flags);
2019
2020 if (!test_bit(WL1271_FLAG_STA_ASSOCIATED, &wl->flags))
2021 goto out;
2022
2023 /*
2024 * The join command disable the keep-alive mode, shut down its process,
2025 * and also clear the template config, so we need to reset it all after
2026 * the join. The acx_aid starts the keep-alive process, and the order
2027 * of the commands below is relevant.
2028 */
2029 ret = wl1271_acx_keep_alive_mode(wl, true);
2030 if (ret < 0)
2031 goto out;
2032
2033 ret = wl1271_acx_aid(wl, wl->aid);
2034 if (ret < 0)
2035 goto out;
2036
2037 ret = wl1271_cmd_build_klv_null_data(wl);
2038 if (ret < 0)
2039 goto out;
2040
2041 ret = wl1271_acx_keep_alive_config(wl, CMD_TEMPL_KLV_IDX_NULL_DATA,
2042 ACX_KEEP_ALIVE_TPL_VALID);
2043 if (ret < 0)
2044 goto out;
2045
2046 out:
2047 return ret;
2048 }
2049
2050 static int wl1271_unjoin(struct wl1271 *wl)
2051 {
2052 int ret;
2053
2054 /* to stop listening to a channel, we disconnect */
2055 ret = wl1271_cmd_disconnect(wl);
2056 if (ret < 0)
2057 goto out;
2058
2059 clear_bit(WL1271_FLAG_JOINED, &wl->flags);
2060 memset(wl->bssid, 0, ETH_ALEN);
2061
2062 /* stop filtering packets based on bssid */
2063 wl1271_configure_filters(wl, FIF_OTHER_BSS);
2064
2065 out:
2066 return ret;
2067 }
2068
2069 static void wl1271_set_band_rate(struct wl1271 *wl)
2070 {
2071 if (wl->band == IEEE80211_BAND_2GHZ)
2072 wl->basic_rate_set = wl->conf.tx.basic_rate;
2073 else
2074 wl->basic_rate_set = wl->conf.tx.basic_rate_5;
2075 }
2076
2077 static int wl1271_sta_handle_idle(struct wl1271 *wl, bool idle)
2078 {
2079 int ret;
2080
2081 if (idle) {
2082 if (test_bit(WL1271_FLAG_JOINED, &wl->flags)) {
2083 ret = wl1271_unjoin(wl);
2084 if (ret < 0)
2085 goto out;
2086 }
2087 wl->rate_set = wl1271_tx_min_rate_get(wl);
2088 ret = wl1271_acx_sta_rate_policies(wl);
2089 if (ret < 0)
2090 goto out;
2091 ret = wl1271_acx_keep_alive_config(
2092 wl, CMD_TEMPL_KLV_IDX_NULL_DATA,
2093 ACX_KEEP_ALIVE_TPL_INVALID);
2094 if (ret < 0)
2095 goto out;
2096 set_bit(WL1271_FLAG_IDLE, &wl->flags);
2097 } else {
2098 /* increment the session counter */
2099 wl->session_counter++;
2100 if (wl->session_counter >= SESSION_COUNTER_MAX)
2101 wl->session_counter = 0;
2102
2103 /* The current firmware only supports sched_scan in idle */
2104 if (wl->sched_scanning) {
2105 wl1271_scan_sched_scan_stop(wl);
2106 ieee80211_sched_scan_stopped(wl->hw);
2107 }
2108
2109 ret = wl1271_dummy_join(wl);
2110 if (ret < 0)
2111 goto out;
2112 clear_bit(WL1271_FLAG_IDLE, &wl->flags);
2113 }
2114
2115 out:
2116 return ret;
2117 }
2118
2119 static int wl1271_op_config(struct ieee80211_hw *hw, u32 changed)
2120 {
2121 struct wl1271 *wl = hw->priv;
2122 struct ieee80211_conf *conf = &hw->conf;
2123 int channel, ret = 0;
2124 bool is_ap;
2125
2126 channel = ieee80211_frequency_to_channel(conf->channel->center_freq);
2127
2128 wl1271_debug(DEBUG_MAC80211, "mac80211 config ch %d psm %s power %d %s"
2129 " changed 0x%x",
2130 channel,
2131 conf->flags & IEEE80211_CONF_PS ? "on" : "off",
2132 conf->power_level,
2133 conf->flags & IEEE80211_CONF_IDLE ? "idle" : "in use",
2134 changed);
2135
2136 /*
2137 * mac80211 will go to idle nearly immediately after transmitting some
2138 * frames, such as the deauth. To make sure those frames reach the air,
2139 * wait here until the TX queue is fully flushed.
2140 */
2141 if ((changed & IEEE80211_CONF_CHANGE_IDLE) &&
2142 (conf->flags & IEEE80211_CONF_IDLE))
2143 wl1271_tx_flush(wl);
2144
2145 mutex_lock(&wl->mutex);
2146
2147 if (unlikely(wl->state == WL1271_STATE_OFF)) {
2148 /* we support configuring the channel and band while off */
2149 if ((changed & IEEE80211_CONF_CHANGE_CHANNEL)) {
2150 wl->band = conf->channel->band;
2151 wl->channel = channel;
2152 }
2153
2154 goto out;
2155 }
2156
2157 is_ap = (wl->bss_type == BSS_TYPE_AP_BSS);
2158
2159 ret = wl1271_ps_elp_wakeup(wl);
2160 if (ret < 0)
2161 goto out;
2162
2163 /* if the channel changes while joined, join again */
2164 if (changed & IEEE80211_CONF_CHANGE_CHANNEL &&
2165 ((wl->band != conf->channel->band) ||
2166 (wl->channel != channel))) {
2167 wl->band = conf->channel->band;
2168 wl->channel = channel;
2169
2170 if (!is_ap) {
2171 /*
2172 * FIXME: the mac80211 should really provide a fixed
2173 * rate to use here. for now, just use the smallest
2174 * possible rate for the band as a fixed rate for
2175 * association frames and other control messages.
2176 */
2177 if (!test_bit(WL1271_FLAG_STA_ASSOCIATED, &wl->flags))
2178 wl1271_set_band_rate(wl);
2179
2180 wl->basic_rate = wl1271_tx_min_rate_get(wl);
2181 ret = wl1271_acx_sta_rate_policies(wl);
2182 if (ret < 0)
2183 wl1271_warning("rate policy for channel "
2184 "failed %d", ret);
2185
2186 if (test_bit(WL1271_FLAG_JOINED, &wl->flags)) {
2187 ret = wl1271_join(wl, false);
2188 if (ret < 0)
2189 wl1271_warning("cmd join on channel "
2190 "failed %d", ret);
2191 }
2192 }
2193 }
2194
2195 if (changed & IEEE80211_CONF_CHANGE_IDLE && !is_ap) {
2196 ret = wl1271_sta_handle_idle(wl,
2197 conf->flags & IEEE80211_CONF_IDLE);
2198 if (ret < 0)
2199 wl1271_warning("idle mode change failed %d", ret);
2200 }
2201
2202 /*
2203 * if mac80211 changes the PSM mode, make sure the mode is not
2204 * incorrectly changed after the pspoll failure active window.
2205 */
2206 if (changed & IEEE80211_CONF_CHANGE_PS)
2207 clear_bit(WL1271_FLAG_PSPOLL_FAILURE, &wl->flags);
2208
2209 if (conf->flags & IEEE80211_CONF_PS &&
2210 !test_bit(WL1271_FLAG_PSM_REQUESTED, &wl->flags)) {
2211 set_bit(WL1271_FLAG_PSM_REQUESTED, &wl->flags);
2212
2213 /*
2214 * We enter PSM only if we're already associated.
2215 * If we're not, we'll enter it when joining an SSID,
2216 * through the bss_info_changed() hook.
2217 */
2218 if (test_bit(WL1271_FLAG_STA_ASSOCIATED, &wl->flags)) {
2219 wl1271_debug(DEBUG_PSM, "psm enabled");
2220 ret = wl1271_ps_set_mode(wl, STATION_POWER_SAVE_MODE,
2221 wl->basic_rate, true);
2222 }
2223 } else if (!(conf->flags & IEEE80211_CONF_PS) &&
2224 test_bit(WL1271_FLAG_PSM_REQUESTED, &wl->flags)) {
2225 wl1271_debug(DEBUG_PSM, "psm disabled");
2226
2227 clear_bit(WL1271_FLAG_PSM_REQUESTED, &wl->flags);
2228
2229 if (test_bit(WL1271_FLAG_PSM, &wl->flags))
2230 ret = wl1271_ps_set_mode(wl, STATION_ACTIVE_MODE,
2231 wl->basic_rate, true);
2232 }
2233
2234 if (conf->power_level != wl->power_level) {
2235 ret = wl1271_acx_tx_power(wl, conf->power_level);
2236 if (ret < 0)
2237 goto out_sleep;
2238
2239 wl->power_level = conf->power_level;
2240 }
2241
2242 out_sleep:
2243 wl1271_ps_elp_sleep(wl);
2244
2245 out:
2246 mutex_unlock(&wl->mutex);
2247
2248 return ret;
2249 }
2250
2251 struct wl1271_filter_params {
2252 bool enabled;
2253 int mc_list_length;
2254 u8 mc_list[ACX_MC_ADDRESS_GROUP_MAX][ETH_ALEN];
2255 };
2256
2257 static u64 wl1271_op_prepare_multicast(struct ieee80211_hw *hw,
2258 struct netdev_hw_addr_list *mc_list)
2259 {
2260 struct wl1271_filter_params *fp;
2261 struct netdev_hw_addr *ha;
2262 struct wl1271 *wl = hw->priv;
2263
2264 if (unlikely(wl->state == WL1271_STATE_OFF))
2265 return 0;
2266
2267 fp = kzalloc(sizeof(*fp), GFP_ATOMIC);
2268 if (!fp) {
2269 wl1271_error("Out of memory setting filters.");
2270 return 0;
2271 }
2272
2273 /* update multicast filtering parameters */
2274 fp->mc_list_length = 0;
2275 if (netdev_hw_addr_list_count(mc_list) > ACX_MC_ADDRESS_GROUP_MAX) {
2276 fp->enabled = false;
2277 } else {
2278 fp->enabled = true;
2279 netdev_hw_addr_list_for_each(ha, mc_list) {
2280 memcpy(fp->mc_list[fp->mc_list_length],
2281 ha->addr, ETH_ALEN);
2282 fp->mc_list_length++;
2283 }
2284 }
2285
2286 return (u64)(unsigned long)fp;
2287 }
2288
2289 #define WL1271_SUPPORTED_FILTERS (FIF_PROMISC_IN_BSS | \
2290 FIF_ALLMULTI | \
2291 FIF_FCSFAIL | \
2292 FIF_BCN_PRBRESP_PROMISC | \
2293 FIF_CONTROL | \
2294 FIF_OTHER_BSS)
2295
2296 static void wl1271_op_configure_filter(struct ieee80211_hw *hw,
2297 unsigned int changed,
2298 unsigned int *total, u64 multicast)
2299 {
2300 struct wl1271_filter_params *fp = (void *)(unsigned long)multicast;
2301 struct wl1271 *wl = hw->priv;
2302 int ret;
2303
2304 wl1271_debug(DEBUG_MAC80211, "mac80211 configure filter changed %x"
2305 " total %x", changed, *total);
2306
2307 mutex_lock(&wl->mutex);
2308
2309 *total &= WL1271_SUPPORTED_FILTERS;
2310 changed &= WL1271_SUPPORTED_FILTERS;
2311
2312 if (unlikely(wl->state == WL1271_STATE_OFF))
2313 goto out;
2314
2315 ret = wl1271_ps_elp_wakeup(wl);
2316 if (ret < 0)
2317 goto out;
2318
2319 if (wl->bss_type != BSS_TYPE_AP_BSS) {
2320 if (*total & FIF_ALLMULTI)
2321 ret = wl1271_acx_group_address_tbl(wl, false, NULL, 0);
2322 else if (fp)
2323 ret = wl1271_acx_group_address_tbl(wl, fp->enabled,
2324 fp->mc_list,
2325 fp->mc_list_length);
2326 if (ret < 0)
2327 goto out_sleep;
2328 }
2329
2330 /* determine, whether supported filter values have changed */
2331 if (changed == 0)
2332 goto out_sleep;
2333
2334 /* configure filters */
2335 wl->filters = *total;
2336 wl1271_configure_filters(wl, 0);
2337
2338 /* apply configured filters */
2339 ret = wl1271_acx_rx_config(wl, wl->rx_config, wl->rx_filter);
2340 if (ret < 0)
2341 goto out_sleep;
2342
2343 out_sleep:
2344 wl1271_ps_elp_sleep(wl);
2345
2346 out:
2347 mutex_unlock(&wl->mutex);
2348 kfree(fp);
2349 }
2350
2351 static int wl1271_record_ap_key(struct wl1271 *wl, u8 id, u8 key_type,
2352 u8 key_size, const u8 *key, u8 hlid, u32 tx_seq_32,
2353 u16 tx_seq_16)
2354 {
2355 struct wl1271_ap_key *ap_key;
2356 int i;
2357
2358 wl1271_debug(DEBUG_CRYPT, "record ap key id %d", (int)id);
2359
2360 if (key_size > MAX_KEY_SIZE)
2361 return -EINVAL;
2362
2363 /*
2364 * Find next free entry in ap_keys. Also check we are not replacing
2365 * an existing key.
2366 */
2367 for (i = 0; i < MAX_NUM_KEYS; i++) {
2368 if (wl->recorded_ap_keys[i] == NULL)
2369 break;
2370
2371 if (wl->recorded_ap_keys[i]->id == id) {
2372 wl1271_warning("trying to record key replacement");
2373 return -EINVAL;
2374 }
2375 }
2376
2377 if (i == MAX_NUM_KEYS)
2378 return -EBUSY;
2379
2380 ap_key = kzalloc(sizeof(*ap_key), GFP_KERNEL);
2381 if (!ap_key)
2382 return -ENOMEM;
2383
2384 ap_key->id = id;
2385 ap_key->key_type = key_type;
2386 ap_key->key_size = key_size;
2387 memcpy(ap_key->key, key, key_size);
2388 ap_key->hlid = hlid;
2389 ap_key->tx_seq_32 = tx_seq_32;
2390 ap_key->tx_seq_16 = tx_seq_16;
2391
2392 wl->recorded_ap_keys[i] = ap_key;
2393 return 0;
2394 }
2395
2396 static void wl1271_free_ap_keys(struct wl1271 *wl)
2397 {
2398 int i;
2399
2400 for (i = 0; i < MAX_NUM_KEYS; i++) {
2401 kfree(wl->recorded_ap_keys[i]);
2402 wl->recorded_ap_keys[i] = NULL;
2403 }
2404 }
2405
2406 static int wl1271_ap_init_hwenc(struct wl1271 *wl)
2407 {
2408 int i, ret = 0;
2409 struct wl1271_ap_key *key;
2410 bool wep_key_added = false;
2411
2412 for (i = 0; i < MAX_NUM_KEYS; i++) {
2413 if (wl->recorded_ap_keys[i] == NULL)
2414 break;
2415
2416 key = wl->recorded_ap_keys[i];
2417 ret = wl1271_cmd_set_ap_key(wl, KEY_ADD_OR_REPLACE,
2418 key->id, key->key_type,
2419 key->key_size, key->key,
2420 key->hlid, key->tx_seq_32,
2421 key->tx_seq_16);
2422 if (ret < 0)
2423 goto out;
2424
2425 if (key->key_type == KEY_WEP)
2426 wep_key_added = true;
2427 }
2428
2429 if (wep_key_added) {
2430 ret = wl1271_cmd_set_ap_default_wep_key(wl, wl->default_key);
2431 if (ret < 0)
2432 goto out;
2433 }
2434
2435 out:
2436 wl1271_free_ap_keys(wl);
2437 return ret;
2438 }
2439
2440 static int wl1271_set_key(struct wl1271 *wl, u16 action, u8 id, u8 key_type,
2441 u8 key_size, const u8 *key, u32 tx_seq_32,
2442 u16 tx_seq_16, struct ieee80211_sta *sta)
2443 {
2444 int ret;
2445 bool is_ap = (wl->bss_type == BSS_TYPE_AP_BSS);
2446
2447 if (is_ap) {
2448 struct wl1271_station *wl_sta;
2449 u8 hlid;
2450
2451 if (sta) {
2452 wl_sta = (struct wl1271_station *)sta->drv_priv;
2453 hlid = wl_sta->hlid;
2454 } else {
2455 hlid = WL1271_AP_BROADCAST_HLID;
2456 }
2457
2458 if (!test_bit(WL1271_FLAG_AP_STARTED, &wl->flags)) {
2459 /*
2460 * We do not support removing keys after AP shutdown.
2461 * Pretend we do to make mac80211 happy.
2462 */
2463 if (action != KEY_ADD_OR_REPLACE)
2464 return 0;
2465
2466 ret = wl1271_record_ap_key(wl, id,
2467 key_type, key_size,
2468 key, hlid, tx_seq_32,
2469 tx_seq_16);
2470 } else {
2471 ret = wl1271_cmd_set_ap_key(wl, action,
2472 id, key_type, key_size,
2473 key, hlid, tx_seq_32,
2474 tx_seq_16);
2475 }
2476
2477 if (ret < 0)
2478 return ret;
2479 } else {
2480 const u8 *addr;
2481 static const u8 bcast_addr[ETH_ALEN] = {
2482 0xff, 0xff, 0xff, 0xff, 0xff, 0xff
2483 };
2484
2485 addr = sta ? sta->addr : bcast_addr;
2486
2487 if (is_zero_ether_addr(addr)) {
2488 /* We dont support TX only encryption */
2489 return -EOPNOTSUPP;
2490 }
2491
2492 /* The wl1271 does not allow to remove unicast keys - they
2493 will be cleared automatically on next CMD_JOIN. Ignore the
2494 request silently, as we dont want the mac80211 to emit
2495 an error message. */
2496 if (action == KEY_REMOVE && !is_broadcast_ether_addr(addr))
2497 return 0;
2498
2499 ret = wl1271_cmd_set_sta_key(wl, action,
2500 id, key_type, key_size,
2501 key, addr, tx_seq_32,
2502 tx_seq_16);
2503 if (ret < 0)
2504 return ret;
2505
2506 /* the default WEP key needs to be configured at least once */
2507 if (key_type == KEY_WEP) {
2508 ret = wl1271_cmd_set_sta_default_wep_key(wl,
2509 wl->default_key);
2510 if (ret < 0)
2511 return ret;
2512 }
2513 }
2514
2515 return 0;
2516 }
2517
2518 static int wl1271_op_set_key(struct ieee80211_hw *hw, enum set_key_cmd cmd,
2519 struct ieee80211_vif *vif,
2520 struct ieee80211_sta *sta,
2521 struct ieee80211_key_conf *key_conf)
2522 {
2523 struct wl1271 *wl = hw->priv;
2524 int ret;
2525 u32 tx_seq_32 = 0;
2526 u16 tx_seq_16 = 0;
2527 u8 key_type;
2528
2529 wl1271_debug(DEBUG_MAC80211, "mac80211 set key");
2530
2531 wl1271_debug(DEBUG_CRYPT, "CMD: 0x%x sta: %p", cmd, sta);
2532 wl1271_debug(DEBUG_CRYPT, "Key: algo:0x%x, id:%d, len:%d flags 0x%x",
2533 key_conf->cipher, key_conf->keyidx,
2534 key_conf->keylen, key_conf->flags);
2535 wl1271_dump(DEBUG_CRYPT, "KEY: ", key_conf->key, key_conf->keylen);
2536
2537 mutex_lock(&wl->mutex);
2538
2539 if (unlikely(wl->state == WL1271_STATE_OFF)) {
2540 ret = -EAGAIN;
2541 goto out_unlock;
2542 }
2543
2544 ret = wl1271_ps_elp_wakeup(wl);
2545 if (ret < 0)
2546 goto out_unlock;
2547
2548 switch (key_conf->cipher) {
2549 case WLAN_CIPHER_SUITE_WEP40:
2550 case WLAN_CIPHER_SUITE_WEP104:
2551 key_type = KEY_WEP;
2552
2553 key_conf->hw_key_idx = key_conf->keyidx;
2554 break;
2555 case WLAN_CIPHER_SUITE_TKIP:
2556 key_type = KEY_TKIP;
2557
2558 key_conf->hw_key_idx = key_conf->keyidx;
2559 tx_seq_32 = WL1271_TX_SECURITY_HI32(wl->tx_security_seq);
2560 tx_seq_16 = WL1271_TX_SECURITY_LO16(wl->tx_security_seq);
2561 break;
2562 case WLAN_CIPHER_SUITE_CCMP:
2563 key_type = KEY_AES;
2564
2565 key_conf->flags |= IEEE80211_KEY_FLAG_GENERATE_IV;
2566 tx_seq_32 = WL1271_TX_SECURITY_HI32(wl->tx_security_seq);
2567 tx_seq_16 = WL1271_TX_SECURITY_LO16(wl->tx_security_seq);
2568 break;
2569 case WL1271_CIPHER_SUITE_GEM:
2570 key_type = KEY_GEM;
2571 tx_seq_32 = WL1271_TX_SECURITY_HI32(wl->tx_security_seq);
2572 tx_seq_16 = WL1271_TX_SECURITY_LO16(wl->tx_security_seq);
2573 break;
2574 default:
2575 wl1271_error("Unknown key algo 0x%x", key_conf->cipher);
2576
2577 ret = -EOPNOTSUPP;
2578 goto out_sleep;
2579 }
2580
2581 switch (cmd) {
2582 case SET_KEY:
2583 ret = wl1271_set_key(wl, KEY_ADD_OR_REPLACE,
2584 key_conf->keyidx, key_type,
2585 key_conf->keylen, key_conf->key,
2586 tx_seq_32, tx_seq_16, sta);
2587 if (ret < 0) {
2588 wl1271_error("Could not add or replace key");
2589 goto out_sleep;
2590 }
2591 break;
2592
2593 case DISABLE_KEY:
2594 ret = wl1271_set_key(wl, KEY_REMOVE,
2595 key_conf->keyidx, key_type,
2596 key_conf->keylen, key_conf->key,
2597 0, 0, sta);
2598 if (ret < 0) {
2599 wl1271_error("Could not remove key");
2600 goto out_sleep;
2601 }
2602 break;
2603
2604 default:
2605 wl1271_error("Unsupported key cmd 0x%x", cmd);
2606 ret = -EOPNOTSUPP;
2607 break;
2608 }
2609
2610 out_sleep:
2611 wl1271_ps_elp_sleep(wl);
2612
2613 out_unlock:
2614 mutex_unlock(&wl->mutex);
2615
2616 return ret;
2617 }
2618
2619 static int wl1271_op_hw_scan(struct ieee80211_hw *hw,
2620 struct ieee80211_vif *vif,
2621 struct cfg80211_scan_request *req)
2622 {
2623 struct wl1271 *wl = hw->priv;
2624 int ret;
2625 u8 *ssid = NULL;
2626 size_t len = 0;
2627
2628 wl1271_debug(DEBUG_MAC80211, "mac80211 hw scan");
2629
2630 if (req->n_ssids) {
2631 ssid = req->ssids[0].ssid;
2632 len = req->ssids[0].ssid_len;
2633 }
2634
2635 mutex_lock(&wl->mutex);
2636
2637 if (wl->state == WL1271_STATE_OFF) {
2638 /*
2639 * We cannot return -EBUSY here because cfg80211 will expect
2640 * a call to ieee80211_scan_completed if we do - in this case
2641 * there won't be any call.
2642 */
2643 ret = -EAGAIN;
2644 goto out;
2645 }
2646
2647 ret = wl1271_ps_elp_wakeup(wl);
2648 if (ret < 0)
2649 goto out;
2650
2651 ret = wl1271_scan(hw->priv, ssid, len, req);
2652
2653 wl1271_ps_elp_sleep(wl);
2654
2655 out:
2656 mutex_unlock(&wl->mutex);
2657
2658 return ret;
2659 }
2660
2661 static int wl1271_op_sched_scan_start(struct ieee80211_hw *hw,
2662 struct ieee80211_vif *vif,
2663 struct cfg80211_sched_scan_request *req,
2664 struct ieee80211_sched_scan_ies *ies)
2665 {
2666 struct wl1271 *wl = hw->priv;
2667 int ret;
2668
2669 wl1271_debug(DEBUG_MAC80211, "wl1271_op_sched_scan_start");
2670
2671 mutex_lock(&wl->mutex);
2672
2673 ret = wl1271_ps_elp_wakeup(wl);
2674 if (ret < 0)
2675 goto out;
2676
2677 ret = wl1271_scan_sched_scan_config(wl, req, ies);
2678 if (ret < 0)
2679 goto out_sleep;
2680
2681 ret = wl1271_scan_sched_scan_start(wl);
2682 if (ret < 0)
2683 goto out_sleep;
2684
2685 wl->sched_scanning = true;
2686
2687 out_sleep:
2688 wl1271_ps_elp_sleep(wl);
2689 out:
2690 mutex_unlock(&wl->mutex);
2691 return ret;
2692 }
2693
2694 static void wl1271_op_sched_scan_stop(struct ieee80211_hw *hw,
2695 struct ieee80211_vif *vif)
2696 {
2697 struct wl1271 *wl = hw->priv;
2698 int ret;
2699
2700 wl1271_debug(DEBUG_MAC80211, "wl1271_op_sched_scan_stop");
2701
2702 mutex_lock(&wl->mutex);
2703
2704 ret = wl1271_ps_elp_wakeup(wl);
2705 if (ret < 0)
2706 goto out;
2707
2708 wl1271_scan_sched_scan_stop(wl);
2709
2710 wl1271_ps_elp_sleep(wl);
2711 out:
2712 mutex_unlock(&wl->mutex);
2713 }
2714
2715 static int wl1271_op_set_frag_threshold(struct ieee80211_hw *hw, u32 value)
2716 {
2717 struct wl1271 *wl = hw->priv;
2718 int ret = 0;
2719
2720 mutex_lock(&wl->mutex);
2721
2722 if (unlikely(wl->state == WL1271_STATE_OFF)) {
2723 ret = -EAGAIN;
2724 goto out;
2725 }
2726
2727 ret = wl1271_ps_elp_wakeup(wl);
2728 if (ret < 0)
2729 goto out;
2730
2731 ret = wl1271_acx_frag_threshold(wl, value);
2732 if (ret < 0)
2733 wl1271_warning("wl1271_op_set_frag_threshold failed: %d", ret);
2734
2735 wl1271_ps_elp_sleep(wl);
2736
2737 out:
2738 mutex_unlock(&wl->mutex);
2739
2740 return ret;
2741 }
2742
2743 static int wl1271_op_set_rts_threshold(struct ieee80211_hw *hw, u32 value)
2744 {
2745 struct wl1271 *wl = hw->priv;
2746 int ret = 0;
2747
2748 mutex_lock(&wl->mutex);
2749
2750 if (unlikely(wl->state == WL1271_STATE_OFF)) {
2751 ret = -EAGAIN;
2752 goto out;
2753 }
2754
2755 ret = wl1271_ps_elp_wakeup(wl);
2756 if (ret < 0)
2757 goto out;
2758
2759 ret = wl1271_acx_rts_threshold(wl, value);
2760 if (ret < 0)
2761 wl1271_warning("wl1271_op_set_rts_threshold failed: %d", ret);
2762
2763 wl1271_ps_elp_sleep(wl);
2764
2765 out:
2766 mutex_unlock(&wl->mutex);
2767
2768 return ret;
2769 }
2770
2771 static int wl1271_ssid_set(struct wl1271 *wl, struct sk_buff *skb,
2772 int offset)
2773 {
2774 u8 ssid_len;
2775 const u8 *ptr = cfg80211_find_ie(WLAN_EID_SSID, skb->data + offset,
2776 skb->len - offset);
2777
2778 if (!ptr) {
2779 wl1271_error("No SSID in IEs!");
2780 return -ENOENT;
2781 }
2782
2783 ssid_len = ptr[1];
2784 if (ssid_len > IEEE80211_MAX_SSID_LEN) {
2785 wl1271_error("SSID is too long!");
2786 return -EINVAL;
2787 }
2788
2789 wl->ssid_len = ssid_len;
2790 memcpy(wl->ssid, ptr+2, ssid_len);
2791 return 0;
2792 }
2793
2794 static int wl1271_bss_erp_info_changed(struct wl1271 *wl,
2795 struct ieee80211_bss_conf *bss_conf,
2796 u32 changed)
2797 {
2798 int ret = 0;
2799
2800 if (changed & BSS_CHANGED_ERP_SLOT) {
2801 if (bss_conf->use_short_slot)
2802 ret = wl1271_acx_slot(wl, SLOT_TIME_SHORT);
2803 else
2804 ret = wl1271_acx_slot(wl, SLOT_TIME_LONG);
2805 if (ret < 0) {
2806 wl1271_warning("Set slot time failed %d", ret);
2807 goto out;
2808 }
2809 }
2810
2811 if (changed & BSS_CHANGED_ERP_PREAMBLE) {
2812 if (bss_conf->use_short_preamble)
2813 wl1271_acx_set_preamble(wl, ACX_PREAMBLE_SHORT);
2814 else
2815 wl1271_acx_set_preamble(wl, ACX_PREAMBLE_LONG);
2816 }
2817
2818 if (changed & BSS_CHANGED_ERP_CTS_PROT) {
2819 if (bss_conf->use_cts_prot)
2820 ret = wl1271_acx_cts_protect(wl, CTSPROTECT_ENABLE);
2821 else
2822 ret = wl1271_acx_cts_protect(wl, CTSPROTECT_DISABLE);
2823 if (ret < 0) {
2824 wl1271_warning("Set ctsprotect failed %d", ret);
2825 goto out;
2826 }
2827 }
2828
2829 out:
2830 return ret;
2831 }
2832
2833 static int wl1271_bss_beacon_info_changed(struct wl1271 *wl,
2834 struct ieee80211_vif *vif,
2835 struct ieee80211_bss_conf *bss_conf,
2836 u32 changed)
2837 {
2838 bool is_ap = (wl->bss_type == BSS_TYPE_AP_BSS);
2839 int ret = 0;
2840
2841 if ((changed & BSS_CHANGED_BEACON_INT)) {
2842 wl1271_debug(DEBUG_MASTER, "beacon interval updated: %d",
2843 bss_conf->beacon_int);
2844
2845 wl->beacon_int = bss_conf->beacon_int;
2846 }
2847
2848 if ((changed & BSS_CHANGED_BEACON)) {
2849 struct ieee80211_hdr *hdr;
2850 int ieoffset = offsetof(struct ieee80211_mgmt,
2851 u.beacon.variable);
2852 struct sk_buff *beacon = ieee80211_beacon_get(wl->hw, vif);
2853 u16 tmpl_id;
2854
2855 if (!beacon)
2856 goto out;
2857
2858 wl1271_debug(DEBUG_MASTER, "beacon updated");
2859
2860 ret = wl1271_ssid_set(wl, beacon, ieoffset);
2861 if (ret < 0) {
2862 dev_kfree_skb(beacon);
2863 goto out;
2864 }
2865 tmpl_id = is_ap ? CMD_TEMPL_AP_BEACON :
2866 CMD_TEMPL_BEACON;
2867 ret = wl1271_cmd_template_set(wl, tmpl_id,
2868 beacon->data,
2869 beacon->len, 0,
2870 wl1271_tx_min_rate_get(wl));
2871 if (ret < 0) {
2872 dev_kfree_skb(beacon);
2873 goto out;
2874 }
2875
2876 hdr = (struct ieee80211_hdr *) beacon->data;
2877 hdr->frame_control = cpu_to_le16(IEEE80211_FTYPE_MGMT |
2878 IEEE80211_STYPE_PROBE_RESP);
2879
2880 tmpl_id = is_ap ? CMD_TEMPL_AP_PROBE_RESPONSE :
2881 CMD_TEMPL_PROBE_RESPONSE;
2882 ret = wl1271_cmd_template_set(wl,
2883 tmpl_id,
2884 beacon->data,
2885 beacon->len, 0,
2886 wl1271_tx_min_rate_get(wl));
2887 dev_kfree_skb(beacon);
2888 if (ret < 0)
2889 goto out;
2890 }
2891
2892 out:
2893 return ret;
2894 }
2895
2896 /* AP mode changes */
2897 static void wl1271_bss_info_changed_ap(struct wl1271 *wl,
2898 struct ieee80211_vif *vif,
2899 struct ieee80211_bss_conf *bss_conf,
2900 u32 changed)
2901 {
2902 int ret = 0;
2903
2904 if ((changed & BSS_CHANGED_BASIC_RATES)) {
2905 u32 rates = bss_conf->basic_rates;
2906
2907 wl->basic_rate_set = wl1271_tx_enabled_rates_get(wl, rates);
2908 wl->basic_rate = wl1271_tx_min_rate_get(wl);
2909
2910 ret = wl1271_init_ap_rates(wl);
2911 if (ret < 0) {
2912 wl1271_error("AP rate policy change failed %d", ret);
2913 goto out;
2914 }
2915
2916 ret = wl1271_ap_init_templates(wl);
2917 if (ret < 0)
2918 goto out;
2919 }
2920
2921 ret = wl1271_bss_beacon_info_changed(wl, vif, bss_conf, changed);
2922 if (ret < 0)
2923 goto out;
2924
2925 if ((changed & BSS_CHANGED_BEACON_ENABLED)) {
2926 if (bss_conf->enable_beacon) {
2927 if (!test_bit(WL1271_FLAG_AP_STARTED, &wl->flags)) {
2928 ret = wl1271_cmd_start_bss(wl);
2929 if (ret < 0)
2930 goto out;
2931
2932 set_bit(WL1271_FLAG_AP_STARTED, &wl->flags);
2933 wl1271_debug(DEBUG_AP, "started AP");
2934
2935 ret = wl1271_ap_init_hwenc(wl);
2936 if (ret < 0)
2937 goto out;
2938 }
2939 } else {
2940 if (test_bit(WL1271_FLAG_AP_STARTED, &wl->flags)) {
2941 ret = wl1271_cmd_stop_bss(wl);
2942 if (ret < 0)
2943 goto out;
2944
2945 clear_bit(WL1271_FLAG_AP_STARTED, &wl->flags);
2946 wl1271_debug(DEBUG_AP, "stopped AP");
2947 }
2948 }
2949 }
2950
2951 ret = wl1271_bss_erp_info_changed(wl, bss_conf, changed);
2952 if (ret < 0)
2953 goto out;
2954 out:
2955 return;
2956 }
2957
2958 /* STA/IBSS mode changes */
2959 static void wl1271_bss_info_changed_sta(struct wl1271 *wl,
2960 struct ieee80211_vif *vif,
2961 struct ieee80211_bss_conf *bss_conf,
2962 u32 changed)
2963 {
2964 bool do_join = false, set_assoc = false;
2965 bool is_ibss = (wl->bss_type == BSS_TYPE_IBSS);
2966 u32 sta_rate_set = 0;
2967 int ret;
2968 struct ieee80211_sta *sta;
2969 bool sta_exists = false;
2970 struct ieee80211_sta_ht_cap sta_ht_cap;
2971
2972 if (is_ibss) {
2973 ret = wl1271_bss_beacon_info_changed(wl, vif, bss_conf,
2974 changed);
2975 if (ret < 0)
2976 goto out;
2977 }
2978
2979 if ((changed & BSS_CHANGED_BEACON_INT) && is_ibss)
2980 do_join = true;
2981
2982 /* Need to update the SSID (for filtering etc) */
2983 if ((changed & BSS_CHANGED_BEACON) && is_ibss)
2984 do_join = true;
2985
2986 if ((changed & BSS_CHANGED_BEACON_ENABLED) && is_ibss) {
2987 wl1271_debug(DEBUG_ADHOC, "ad-hoc beaconing: %s",
2988 bss_conf->enable_beacon ? "enabled" : "disabled");
2989
2990 if (bss_conf->enable_beacon)
2991 wl->set_bss_type = BSS_TYPE_IBSS;
2992 else
2993 wl->set_bss_type = BSS_TYPE_STA_BSS;
2994 do_join = true;
2995 }
2996
2997 if ((changed & BSS_CHANGED_CQM)) {
2998 bool enable = false;
2999 if (bss_conf->cqm_rssi_thold)
3000 enable = true;
3001 ret = wl1271_acx_rssi_snr_trigger(wl, enable,
3002 bss_conf->cqm_rssi_thold,
3003 bss_conf->cqm_rssi_hyst);
3004 if (ret < 0)
3005 goto out;
3006 wl->rssi_thold = bss_conf->cqm_rssi_thold;
3007 }
3008
3009 if ((changed & BSS_CHANGED_BSSID) &&
3010 /*
3011 * Now we know the correct bssid, so we send a new join command
3012 * and enable the BSSID filter
3013 */
3014 memcmp(wl->bssid, bss_conf->bssid, ETH_ALEN)) {
3015 memcpy(wl->bssid, bss_conf->bssid, ETH_ALEN);
3016
3017 if (!is_zero_ether_addr(wl->bssid)) {
3018 ret = wl1271_cmd_build_null_data(wl);
3019 if (ret < 0)
3020 goto out;
3021
3022 ret = wl1271_build_qos_null_data(wl);
3023 if (ret < 0)
3024 goto out;
3025
3026 /* filter out all packets not from this BSSID */
3027 wl1271_configure_filters(wl, 0);
3028
3029 /* Need to update the BSSID (for filtering etc) */
3030 do_join = true;
3031 }
3032 }
3033
3034 rcu_read_lock();
3035 sta = ieee80211_find_sta(vif, bss_conf->bssid);
3036 if (sta) {
3037 /* save the supp_rates of the ap */
3038 sta_rate_set = sta->supp_rates[wl->hw->conf.channel->band];
3039 if (sta->ht_cap.ht_supported)
3040 sta_rate_set |=
3041 (sta->ht_cap.mcs.rx_mask[0] << HW_HT_RATES_OFFSET);
3042 sta_ht_cap = sta->ht_cap;
3043 sta_exists = true;
3044 }
3045 rcu_read_unlock();
3046
3047 if (sta_exists) {
3048 /* handle new association with HT and HT information change */
3049 if ((changed & BSS_CHANGED_HT) &&
3050 (bss_conf->channel_type != NL80211_CHAN_NO_HT)) {
3051 ret = wl1271_acx_set_ht_capabilities(wl, &sta_ht_cap,
3052 true);
3053 if (ret < 0) {
3054 wl1271_warning("Set ht cap true failed %d",
3055 ret);
3056 goto out;
3057 }
3058 ret = wl1271_acx_set_ht_information(wl,
3059 bss_conf->ht_operation_mode);
3060 if (ret < 0) {
3061 wl1271_warning("Set ht information failed %d",
3062 ret);
3063 goto out;
3064 }
3065 }
3066 /* handle new association without HT and disassociation */
3067 else if (changed & BSS_CHANGED_ASSOC) {
3068 ret = wl1271_acx_set_ht_capabilities(wl, &sta_ht_cap,
3069 false);
3070 if (ret < 0) {
3071 wl1271_warning("Set ht cap false failed %d",
3072 ret);
3073 goto out;
3074 }
3075 }
3076 }
3077
3078 if ((changed & BSS_CHANGED_ASSOC)) {
3079 if (bss_conf->assoc) {
3080 u32 rates;
3081 int ieoffset;
3082 wl->aid = bss_conf->aid;
3083 set_assoc = true;
3084
3085 wl->ps_poll_failures = 0;
3086
3087 /*
3088 * use basic rates from AP, and determine lowest rate
3089 * to use with control frames.
3090 */
3091 rates = bss_conf->basic_rates;
3092 wl->basic_rate_set = wl1271_tx_enabled_rates_get(wl,
3093 rates);
3094 wl->basic_rate = wl1271_tx_min_rate_get(wl);
3095 if (sta_rate_set)
3096 wl->rate_set = wl1271_tx_enabled_rates_get(wl,
3097 sta_rate_set);
3098 ret = wl1271_acx_sta_rate_policies(wl);
3099 if (ret < 0)
3100 goto out;
3101
3102 /*
3103 * with wl1271, we don't need to update the
3104 * beacon_int and dtim_period, because the firmware
3105 * updates it by itself when the first beacon is
3106 * received after a join.
3107 */
3108 ret = wl1271_cmd_build_ps_poll(wl, wl->aid);
3109 if (ret < 0)
3110 goto out;
3111
3112 /*
3113 * Get a template for hardware connection maintenance
3114 */
3115 dev_kfree_skb(wl->probereq);
3116 wl->probereq = wl1271_cmd_build_ap_probe_req(wl, NULL);
3117 ieoffset = offsetof(struct ieee80211_mgmt,
3118 u.probe_req.variable);
3119 wl1271_ssid_set(wl, wl->probereq, ieoffset);
3120
3121 /* enable the connection monitoring feature */
3122 ret = wl1271_acx_conn_monit_params(wl, true);
3123 if (ret < 0)
3124 goto out;
3125
3126 /* If we want to go in PSM but we're not there yet */
3127 if (test_bit(WL1271_FLAG_PSM_REQUESTED, &wl->flags) &&
3128 !test_bit(WL1271_FLAG_PSM, &wl->flags)) {
3129 enum wl1271_cmd_ps_mode mode;
3130
3131 mode = STATION_POWER_SAVE_MODE;
3132 ret = wl1271_ps_set_mode(wl, mode,
3133 wl->basic_rate,
3134 true);
3135 if (ret < 0)
3136 goto out;
3137 }
3138 } else {
3139 /* use defaults when not associated */
3140 bool was_assoc =
3141 !!test_and_clear_bit(WL1271_FLAG_STA_ASSOCIATED,
3142 &wl->flags);
3143 clear_bit(WL1271_FLAG_STA_STATE_SENT, &wl->flags);
3144 wl->aid = 0;
3145
3146 /* free probe-request template */
3147 dev_kfree_skb(wl->probereq);
3148 wl->probereq = NULL;
3149
3150 /* re-enable dynamic ps - just in case */
3151 ieee80211_enable_dyn_ps(wl->vif);
3152
3153 /* revert back to minimum rates for the current band */
3154 wl1271_set_band_rate(wl);
3155 wl->basic_rate = wl1271_tx_min_rate_get(wl);
3156 ret = wl1271_acx_sta_rate_policies(wl);
3157 if (ret < 0)
3158 goto out;
3159
3160 /* disable connection monitor features */
3161 ret = wl1271_acx_conn_monit_params(wl, false);
3162
3163 /* Disable the keep-alive feature */
3164 ret = wl1271_acx_keep_alive_mode(wl, false);
3165 if (ret < 0)
3166 goto out;
3167
3168 /* restore the bssid filter and go to dummy bssid */
3169 if (was_assoc) {
3170 wl1271_unjoin(wl);
3171 wl1271_dummy_join(wl);
3172 }
3173 }
3174 }
3175
3176 if (changed & BSS_CHANGED_IBSS) {
3177 wl1271_debug(DEBUG_ADHOC, "ibss_joined: %d",
3178 bss_conf->ibss_joined);
3179
3180 if (bss_conf->ibss_joined) {
3181 u32 rates = bss_conf->basic_rates;
3182 wl->basic_rate_set = wl1271_tx_enabled_rates_get(wl,
3183 rates);
3184 wl->basic_rate = wl1271_tx_min_rate_get(wl);
3185
3186 /* by default, use 11b rates */
3187 wl->rate_set = CONF_TX_IBSS_DEFAULT_RATES;
3188 ret = wl1271_acx_sta_rate_policies(wl);
3189 if (ret < 0)
3190 goto out;
3191 }
3192 }
3193
3194 ret = wl1271_bss_erp_info_changed(wl, bss_conf, changed);
3195 if (ret < 0)
3196 goto out;
3197
3198 if (changed & BSS_CHANGED_ARP_FILTER) {
3199 __be32 addr = bss_conf->arp_addr_list[0];
3200 WARN_ON(wl->bss_type != BSS_TYPE_STA_BSS);
3201
3202 if (bss_conf->arp_addr_cnt == 1 &&
3203 bss_conf->arp_filter_enabled) {
3204 /*
3205 * The template should have been configured only upon
3206 * association. however, it seems that the correct ip
3207 * isn't being set (when sending), so we have to
3208 * reconfigure the template upon every ip change.
3209 */
3210 ret = wl1271_cmd_build_arp_rsp(wl, addr);
3211 if (ret < 0) {
3212 wl1271_warning("build arp rsp failed: %d", ret);
3213 goto out;
3214 }
3215
3216 ret = wl1271_acx_arp_ip_filter(wl,
3217 ACX_ARP_FILTER_ARP_FILTERING,
3218 addr);
3219 } else
3220 ret = wl1271_acx_arp_ip_filter(wl, 0, addr);
3221
3222 if (ret < 0)
3223 goto out;
3224 }
3225
3226 if (do_join) {
3227 ret = wl1271_join(wl, set_assoc);
3228 if (ret < 0) {
3229 wl1271_warning("cmd join failed %d", ret);
3230 goto out;
3231 }
3232 wl1271_check_operstate(wl, ieee80211_get_operstate(vif));
3233 }
3234
3235 out:
3236 return;
3237 }
3238
3239 static void wl1271_op_bss_info_changed(struct ieee80211_hw *hw,
3240 struct ieee80211_vif *vif,
3241 struct ieee80211_bss_conf *bss_conf,
3242 u32 changed)
3243 {
3244 struct wl1271 *wl = hw->priv;
3245 bool is_ap = (wl->bss_type == BSS_TYPE_AP_BSS);
3246 int ret;
3247
3248 wl1271_debug(DEBUG_MAC80211, "mac80211 bss info changed 0x%x",
3249 (int)changed);
3250
3251 mutex_lock(&wl->mutex);
3252
3253 if (unlikely(wl->state == WL1271_STATE_OFF))
3254 goto out;
3255
3256 ret = wl1271_ps_elp_wakeup(wl);
3257 if (ret < 0)
3258 goto out;
3259
3260 if (is_ap)
3261 wl1271_bss_info_changed_ap(wl, vif, bss_conf, changed);
3262 else
3263 wl1271_bss_info_changed_sta(wl, vif, bss_conf, changed);
3264
3265 wl1271_ps_elp_sleep(wl);
3266
3267 out:
3268 mutex_unlock(&wl->mutex);
3269 }
3270
3271 static int wl1271_op_conf_tx(struct ieee80211_hw *hw, u16 queue,
3272 const struct ieee80211_tx_queue_params *params)
3273 {
3274 struct wl1271 *wl = hw->priv;
3275 u8 ps_scheme;
3276 int ret = 0;
3277
3278 mutex_lock(&wl->mutex);
3279
3280 wl1271_debug(DEBUG_MAC80211, "mac80211 conf tx %d", queue);
3281
3282 if (params->uapsd)
3283 ps_scheme = CONF_PS_SCHEME_UPSD_TRIGGER;
3284 else
3285 ps_scheme = CONF_PS_SCHEME_LEGACY;
3286
3287 if (wl->state == WL1271_STATE_OFF) {
3288 /*
3289 * If the state is off, the parameters will be recorded and
3290 * configured on init. This happens in AP-mode.
3291 */
3292 struct conf_tx_ac_category *conf_ac =
3293 &wl->conf.tx.ac_conf[wl1271_tx_get_queue(queue)];
3294 struct conf_tx_tid *conf_tid =
3295 &wl->conf.tx.tid_conf[wl1271_tx_get_queue(queue)];
3296
3297 conf_ac->ac = wl1271_tx_get_queue(queue);
3298 conf_ac->cw_min = (u8)params->cw_min;
3299 conf_ac->cw_max = params->cw_max;
3300 conf_ac->aifsn = params->aifs;
3301 conf_ac->tx_op_limit = params->txop << 5;
3302
3303 conf_tid->queue_id = wl1271_tx_get_queue(queue);
3304 conf_tid->channel_type = CONF_CHANNEL_TYPE_EDCF;
3305 conf_tid->tsid = wl1271_tx_get_queue(queue);
3306 conf_tid->ps_scheme = ps_scheme;
3307 conf_tid->ack_policy = CONF_ACK_POLICY_LEGACY;
3308 conf_tid->apsd_conf[0] = 0;
3309 conf_tid->apsd_conf[1] = 0;
3310 goto out;
3311 }
3312
3313 ret = wl1271_ps_elp_wakeup(wl);
3314 if (ret < 0)
3315 goto out;
3316
3317 /*
3318 * the txop is confed in units of 32us by the mac80211,
3319 * we need us
3320 */
3321 ret = wl1271_acx_ac_cfg(wl, wl1271_tx_get_queue(queue),
3322 params->cw_min, params->cw_max,
3323 params->aifs, params->txop << 5);
3324 if (ret < 0)
3325 goto out_sleep;
3326
3327 ret = wl1271_acx_tid_cfg(wl, wl1271_tx_get_queue(queue),
3328 CONF_CHANNEL_TYPE_EDCF,
3329 wl1271_tx_get_queue(queue),
3330 ps_scheme, CONF_ACK_POLICY_LEGACY,
3331 0, 0);
3332
3333 out_sleep:
3334 wl1271_ps_elp_sleep(wl);
3335
3336 out:
3337 mutex_unlock(&wl->mutex);
3338
3339 return ret;
3340 }
3341
3342 static u64 wl1271_op_get_tsf(struct ieee80211_hw *hw)
3343 {
3344
3345 struct wl1271 *wl = hw->priv;
3346 u64 mactime = ULLONG_MAX;
3347 int ret;
3348
3349 wl1271_debug(DEBUG_MAC80211, "mac80211 get tsf");
3350
3351 mutex_lock(&wl->mutex);
3352
3353 if (unlikely(wl->state == WL1271_STATE_OFF))
3354 goto out;
3355
3356 ret = wl1271_ps_elp_wakeup(wl);
3357 if (ret < 0)
3358 goto out;
3359
3360 ret = wl1271_acx_tsf_info(wl, &mactime);
3361 if (ret < 0)
3362 goto out_sleep;
3363
3364 out_sleep:
3365 wl1271_ps_elp_sleep(wl);
3366
3367 out:
3368 mutex_unlock(&wl->mutex);
3369 return mactime;
3370 }
3371
3372 static int wl1271_op_get_survey(struct ieee80211_hw *hw, int idx,
3373 struct survey_info *survey)
3374 {
3375 struct wl1271 *wl = hw->priv;
3376 struct ieee80211_conf *conf = &hw->conf;
3377
3378 if (idx != 0)
3379 return -ENOENT;
3380
3381 survey->channel = conf->channel;
3382 survey->filled = SURVEY_INFO_NOISE_DBM;
3383 survey->noise = wl->noise;
3384
3385 return 0;
3386 }
3387
3388 static int wl1271_allocate_sta(struct wl1271 *wl,
3389 struct ieee80211_sta *sta,
3390 u8 *hlid)
3391 {
3392 struct wl1271_station *wl_sta;
3393 int id;
3394
3395 id = find_first_zero_bit(wl->ap_hlid_map, AP_MAX_STATIONS);
3396 if (id >= AP_MAX_STATIONS) {
3397 wl1271_warning("could not allocate HLID - too much stations");
3398 return -EBUSY;
3399 }
3400
3401 wl_sta = (struct wl1271_station *)sta->drv_priv;
3402 __set_bit(id, wl->ap_hlid_map);
3403 wl_sta->hlid = WL1271_AP_STA_HLID_START + id;
3404 *hlid = wl_sta->hlid;
3405 memcpy(wl->links[wl_sta->hlid].addr, sta->addr, ETH_ALEN);
3406 return 0;
3407 }
3408
3409 static void wl1271_free_sta(struct wl1271 *wl, u8 hlid)
3410 {
3411 int id = hlid - WL1271_AP_STA_HLID_START;
3412
3413 if (WARN_ON(!test_bit(id, wl->ap_hlid_map)))
3414 return;
3415
3416 __clear_bit(id, wl->ap_hlid_map);
3417 memset(wl->links[hlid].addr, 0, ETH_ALEN);
3418 wl1271_tx_reset_link_queues(wl, hlid);
3419 __clear_bit(hlid, &wl->ap_ps_map);
3420 __clear_bit(hlid, (unsigned long *)&wl->ap_fw_ps_map);
3421 }
3422
3423 static int wl1271_op_sta_add(struct ieee80211_hw *hw,
3424 struct ieee80211_vif *vif,
3425 struct ieee80211_sta *sta)
3426 {
3427 struct wl1271 *wl = hw->priv;
3428 int ret = 0;
3429 u8 hlid;
3430
3431 mutex_lock(&wl->mutex);
3432
3433 if (unlikely(wl->state == WL1271_STATE_OFF))
3434 goto out;
3435
3436 if (wl->bss_type != BSS_TYPE_AP_BSS)
3437 goto out;
3438
3439 wl1271_debug(DEBUG_MAC80211, "mac80211 add sta %d", (int)sta->aid);
3440
3441 ret = wl1271_allocate_sta(wl, sta, &hlid);
3442 if (ret < 0)
3443 goto out;
3444
3445 ret = wl1271_ps_elp_wakeup(wl);
3446 if (ret < 0)
3447 goto out_free_sta;
3448
3449 ret = wl1271_cmd_add_sta(wl, sta, hlid);
3450 if (ret < 0)
3451 goto out_sleep;
3452
3453 out_sleep:
3454 wl1271_ps_elp_sleep(wl);
3455
3456 out_free_sta:
3457 if (ret < 0)
3458 wl1271_free_sta(wl, hlid);
3459
3460 out:
3461 mutex_unlock(&wl->mutex);
3462 return ret;
3463 }
3464
3465 static int wl1271_op_sta_remove(struct ieee80211_hw *hw,
3466 struct ieee80211_vif *vif,
3467 struct ieee80211_sta *sta)
3468 {
3469 struct wl1271 *wl = hw->priv;
3470 struct wl1271_station *wl_sta;
3471 int ret = 0, id;
3472
3473 mutex_lock(&wl->mutex);
3474
3475 if (unlikely(wl->state == WL1271_STATE_OFF))
3476 goto out;
3477
3478 if (wl->bss_type != BSS_TYPE_AP_BSS)
3479 goto out;
3480
3481 wl1271_debug(DEBUG_MAC80211, "mac80211 remove sta %d", (int)sta->aid);
3482
3483 wl_sta = (struct wl1271_station *)sta->drv_priv;
3484 id = wl_sta->hlid - WL1271_AP_STA_HLID_START;
3485 if (WARN_ON(!test_bit(id, wl->ap_hlid_map)))
3486 goto out;
3487
3488 ret = wl1271_ps_elp_wakeup(wl);
3489 if (ret < 0)
3490 goto out;
3491
3492 ret = wl1271_cmd_remove_sta(wl, wl_sta->hlid);
3493 if (ret < 0)
3494 goto out_sleep;
3495
3496 wl1271_free_sta(wl, wl_sta->hlid);
3497
3498 out_sleep:
3499 wl1271_ps_elp_sleep(wl);
3500
3501 out:
3502 mutex_unlock(&wl->mutex);
3503 return ret;
3504 }
3505
3506 static int wl1271_op_ampdu_action(struct ieee80211_hw *hw,
3507 struct ieee80211_vif *vif,
3508 enum ieee80211_ampdu_mlme_action action,
3509 struct ieee80211_sta *sta, u16 tid, u16 *ssn,
3510 u8 buf_size)
3511 {
3512 struct wl1271 *wl = hw->priv;
3513 int ret;
3514
3515 mutex_lock(&wl->mutex);
3516
3517 if (unlikely(wl->state == WL1271_STATE_OFF)) {
3518 ret = -EAGAIN;
3519 goto out;
3520 }
3521
3522 ret = wl1271_ps_elp_wakeup(wl);
3523 if (ret < 0)
3524 goto out;
3525
3526 wl1271_debug(DEBUG_MAC80211, "mac80211 ampdu: Rx tid %d action %d",
3527 tid, action);
3528
3529 switch (action) {
3530 case IEEE80211_AMPDU_RX_START:
3531 if ((wl->ba_support) && (wl->ba_allowed)) {
3532 ret = wl1271_acx_set_ba_receiver_session(wl, tid, *ssn,
3533 true);
3534 if (!ret)
3535 wl->ba_rx_bitmap |= BIT(tid);
3536 } else {
3537 ret = -ENOTSUPP;
3538 }
3539 break;
3540
3541 case IEEE80211_AMPDU_RX_STOP:
3542 ret = wl1271_acx_set_ba_receiver_session(wl, tid, 0, false);
3543 if (!ret)
3544 wl->ba_rx_bitmap &= ~BIT(tid);
3545 break;
3546
3547 /*
3548 * The BA initiator session management in FW independently.
3549 * Falling break here on purpose for all TX APDU commands.
3550 */
3551 case IEEE80211_AMPDU_TX_START:
3552 case IEEE80211_AMPDU_TX_STOP:
3553 case IEEE80211_AMPDU_TX_OPERATIONAL:
3554 ret = -EINVAL;
3555 break;
3556
3557 default:
3558 wl1271_error("Incorrect ampdu action id=%x\n", action);
3559 ret = -EINVAL;
3560 }
3561
3562 wl1271_ps_elp_sleep(wl);
3563
3564 out:
3565 mutex_unlock(&wl->mutex);
3566
3567 return ret;
3568 }
3569
3570 static bool wl1271_tx_frames_pending(struct ieee80211_hw *hw)
3571 {
3572 struct wl1271 *wl = hw->priv;
3573 bool ret = false;
3574
3575 mutex_lock(&wl->mutex);
3576
3577 if (unlikely(wl->state == WL1271_STATE_OFF))
3578 goto out;
3579
3580 /* packets are considered pending if in the TX queue or the FW */
3581 ret = (wl->tx_queue_count > 0) || (wl->tx_frames_cnt > 0);
3582
3583 /* the above is appropriate for STA mode for PS purposes */
3584 WARN_ON(wl->bss_type != BSS_TYPE_STA_BSS);
3585
3586 out:
3587 mutex_unlock(&wl->mutex);
3588
3589 return ret;
3590 }
3591
3592 /* can't be const, mac80211 writes to this */
3593 static struct ieee80211_rate wl1271_rates[] = {
3594 { .bitrate = 10,
3595 .hw_value = CONF_HW_BIT_RATE_1MBPS,
3596 .hw_value_short = CONF_HW_BIT_RATE_1MBPS, },
3597 { .bitrate = 20,
3598 .hw_value = CONF_HW_BIT_RATE_2MBPS,
3599 .hw_value_short = CONF_HW_BIT_RATE_2MBPS,
3600 .flags = IEEE80211_RATE_SHORT_PREAMBLE },
3601 { .bitrate = 55,
3602 .hw_value = CONF_HW_BIT_RATE_5_5MBPS,
3603 .hw_value_short = CONF_HW_BIT_RATE_5_5MBPS,
3604 .flags = IEEE80211_RATE_SHORT_PREAMBLE },
3605 { .bitrate = 110,
3606 .hw_value = CONF_HW_BIT_RATE_11MBPS,
3607 .hw_value_short = CONF_HW_BIT_RATE_11MBPS,
3608 .flags = IEEE80211_RATE_SHORT_PREAMBLE },
3609 { .bitrate = 60,
3610 .hw_value = CONF_HW_BIT_RATE_6MBPS,
3611 .hw_value_short = CONF_HW_BIT_RATE_6MBPS, },
3612 { .bitrate = 90,
3613 .hw_value = CONF_HW_BIT_RATE_9MBPS,
3614 .hw_value_short = CONF_HW_BIT_RATE_9MBPS, },
3615 { .bitrate = 120,
3616 .hw_value = CONF_HW_BIT_RATE_12MBPS,
3617 .hw_value_short = CONF_HW_BIT_RATE_12MBPS, },
3618 { .bitrate = 180,
3619 .hw_value = CONF_HW_BIT_RATE_18MBPS,
3620 .hw_value_short = CONF_HW_BIT_RATE_18MBPS, },
3621 { .bitrate = 240,
3622 .hw_value = CONF_HW_BIT_RATE_24MBPS,
3623 .hw_value_short = CONF_HW_BIT_RATE_24MBPS, },
3624 { .bitrate = 360,
3625 .hw_value = CONF_HW_BIT_RATE_36MBPS,
3626 .hw_value_short = CONF_HW_BIT_RATE_36MBPS, },
3627 { .bitrate = 480,
3628 .hw_value = CONF_HW_BIT_RATE_48MBPS,
3629 .hw_value_short = CONF_HW_BIT_RATE_48MBPS, },
3630 { .bitrate = 540,
3631 .hw_value = CONF_HW_BIT_RATE_54MBPS,
3632 .hw_value_short = CONF_HW_BIT_RATE_54MBPS, },
3633 };
3634
3635 /* can't be const, mac80211 writes to this */
3636 static struct ieee80211_channel wl1271_channels[] = {
3637 { .hw_value = 1, .center_freq = 2412, .max_power = 25 },
3638 { .hw_value = 2, .center_freq = 2417, .max_power = 25 },
3639 { .hw_value = 3, .center_freq = 2422, .max_power = 25 },
3640 { .hw_value = 4, .center_freq = 2427, .max_power = 25 },
3641 { .hw_value = 5, .center_freq = 2432, .max_power = 25 },
3642 { .hw_value = 6, .center_freq = 2437, .max_power = 25 },
3643 { .hw_value = 7, .center_freq = 2442, .max_power = 25 },
3644 { .hw_value = 8, .center_freq = 2447, .max_power = 25 },
3645 { .hw_value = 9, .center_freq = 2452, .max_power = 25 },
3646 { .hw_value = 10, .center_freq = 2457, .max_power = 25 },
3647 { .hw_value = 11, .center_freq = 2462, .max_power = 25 },
3648 { .hw_value = 12, .center_freq = 2467, .max_power = 25 },
3649 { .hw_value = 13, .center_freq = 2472, .max_power = 25 },
3650 { .hw_value = 14, .center_freq = 2484, .max_power = 25 },
3651 };
3652
3653 /* mapping to indexes for wl1271_rates */
3654 static const u8 wl1271_rate_to_idx_2ghz[] = {
3655 /* MCS rates are used only with 11n */
3656 7, /* CONF_HW_RXTX_RATE_MCS7 */
3657 6, /* CONF_HW_RXTX_RATE_MCS6 */
3658 5, /* CONF_HW_RXTX_RATE_MCS5 */
3659 4, /* CONF_HW_RXTX_RATE_MCS4 */
3660 3, /* CONF_HW_RXTX_RATE_MCS3 */
3661 2, /* CONF_HW_RXTX_RATE_MCS2 */
3662 1, /* CONF_HW_RXTX_RATE_MCS1 */
3663 0, /* CONF_HW_RXTX_RATE_MCS0 */
3664
3665 11, /* CONF_HW_RXTX_RATE_54 */
3666 10, /* CONF_HW_RXTX_RATE_48 */
3667 9, /* CONF_HW_RXTX_RATE_36 */
3668 8, /* CONF_HW_RXTX_RATE_24 */
3669
3670 /* TI-specific rate */
3671 CONF_HW_RXTX_RATE_UNSUPPORTED, /* CONF_HW_RXTX_RATE_22 */
3672
3673 7, /* CONF_HW_RXTX_RATE_18 */
3674 6, /* CONF_HW_RXTX_RATE_12 */
3675 3, /* CONF_HW_RXTX_RATE_11 */
3676 5, /* CONF_HW_RXTX_RATE_9 */
3677 4, /* CONF_HW_RXTX_RATE_6 */
3678 2, /* CONF_HW_RXTX_RATE_5_5 */
3679 1, /* CONF_HW_RXTX_RATE_2 */
3680 0 /* CONF_HW_RXTX_RATE_1 */
3681 };
3682
3683 /* 11n STA capabilities */
3684 #define HW_RX_HIGHEST_RATE 72
3685
3686 #ifdef CONFIG_WL12XX_HT
3687 #define WL12XX_HT_CAP { \
3688 .cap = IEEE80211_HT_CAP_GRN_FLD | IEEE80211_HT_CAP_SGI_20 | \
3689 (1 << IEEE80211_HT_CAP_RX_STBC_SHIFT), \
3690 .ht_supported = true, \
3691 .ampdu_factor = IEEE80211_HT_MAX_AMPDU_8K, \
3692 .ampdu_density = IEEE80211_HT_MPDU_DENSITY_8, \
3693 .mcs = { \
3694 .rx_mask = { 0xff, 0, 0, 0, 0, 0, 0, 0, 0, 0, }, \
3695 .rx_highest = cpu_to_le16(HW_RX_HIGHEST_RATE), \
3696 .tx_params = IEEE80211_HT_MCS_TX_DEFINED, \
3697 }, \
3698 }
3699 #else
3700 #define WL12XX_HT_CAP { \
3701 .ht_supported = false, \
3702 }
3703 #endif
3704
3705 /* can't be const, mac80211 writes to this */
3706 static struct ieee80211_supported_band wl1271_band_2ghz = {
3707 .channels = wl1271_channels,
3708 .n_channels = ARRAY_SIZE(wl1271_channels),
3709 .bitrates = wl1271_rates,
3710 .n_bitrates = ARRAY_SIZE(wl1271_rates),
3711 .ht_cap = WL12XX_HT_CAP,
3712 };
3713
3714 /* 5 GHz data rates for WL1273 */
3715 static struct ieee80211_rate wl1271_rates_5ghz[] = {
3716 { .bitrate = 60,
3717 .hw_value = CONF_HW_BIT_RATE_6MBPS,
3718 .hw_value_short = CONF_HW_BIT_RATE_6MBPS, },
3719 { .bitrate = 90,
3720 .hw_value = CONF_HW_BIT_RATE_9MBPS,
3721 .hw_value_short = CONF_HW_BIT_RATE_9MBPS, },
3722 { .bitrate = 120,
3723 .hw_value = CONF_HW_BIT_RATE_12MBPS,
3724 .hw_value_short = CONF_HW_BIT_RATE_12MBPS, },
3725 { .bitrate = 180,
3726 .hw_value = CONF_HW_BIT_RATE_18MBPS,
3727 .hw_value_short = CONF_HW_BIT_RATE_18MBPS, },
3728 { .bitrate = 240,
3729 .hw_value = CONF_HW_BIT_RATE_24MBPS,
3730 .hw_value_short = CONF_HW_BIT_RATE_24MBPS, },
3731 { .bitrate = 360,
3732 .hw_value = CONF_HW_BIT_RATE_36MBPS,
3733 .hw_value_short = CONF_HW_BIT_RATE_36MBPS, },
3734 { .bitrate = 480,
3735 .hw_value = CONF_HW_BIT_RATE_48MBPS,
3736 .hw_value_short = CONF_HW_BIT_RATE_48MBPS, },
3737 { .bitrate = 540,
3738 .hw_value = CONF_HW_BIT_RATE_54MBPS,
3739 .hw_value_short = CONF_HW_BIT_RATE_54MBPS, },
3740 };
3741
3742 /* 5 GHz band channels for WL1273 */
3743 static struct ieee80211_channel wl1271_channels_5ghz[] = {
3744 { .hw_value = 7, .center_freq = 5035},
3745 { .hw_value = 8, .center_freq = 5040},
3746 { .hw_value = 9, .center_freq = 5045},
3747 { .hw_value = 11, .center_freq = 5055},
3748 { .hw_value = 12, .center_freq = 5060},
3749 { .hw_value = 16, .center_freq = 5080},
3750 { .hw_value = 34, .center_freq = 5170},
3751 { .hw_value = 36, .center_freq = 5180},
3752 { .hw_value = 38, .center_freq = 5190},
3753 { .hw_value = 40, .center_freq = 5200},
3754 { .hw_value = 42, .center_freq = 5210},
3755 { .hw_value = 44, .center_freq = 5220},
3756 { .hw_value = 46, .center_freq = 5230},
3757 { .hw_value = 48, .center_freq = 5240},
3758 { .hw_value = 52, .center_freq = 5260},
3759 { .hw_value = 56, .center_freq = 5280},
3760 { .hw_value = 60, .center_freq = 5300},
3761 { .hw_value = 64, .center_freq = 5320},
3762 { .hw_value = 100, .center_freq = 5500},
3763 { .hw_value = 104, .center_freq = 5520},
3764 { .hw_value = 108, .center_freq = 5540},
3765 { .hw_value = 112, .center_freq = 5560},
3766 { .hw_value = 116, .center_freq = 5580},
3767 { .hw_value = 120, .center_freq = 5600},
3768 { .hw_value = 124, .center_freq = 5620},
3769 { .hw_value = 128, .center_freq = 5640},
3770 { .hw_value = 132, .center_freq = 5660},
3771 { .hw_value = 136, .center_freq = 5680},
3772 { .hw_value = 140, .center_freq = 5700},
3773 { .hw_value = 149, .center_freq = 5745},
3774 { .hw_value = 153, .center_freq = 5765},
3775 { .hw_value = 157, .center_freq = 5785},
3776 { .hw_value = 161, .center_freq = 5805},
3777 { .hw_value = 165, .center_freq = 5825},
3778 };
3779
3780 /* mapping to indexes for wl1271_rates_5ghz */
3781 static const u8 wl1271_rate_to_idx_5ghz[] = {
3782 /* MCS rates are used only with 11n */
3783 7, /* CONF_HW_RXTX_RATE_MCS7 */
3784 6, /* CONF_HW_RXTX_RATE_MCS6 */
3785 5, /* CONF_HW_RXTX_RATE_MCS5 */
3786 4, /* CONF_HW_RXTX_RATE_MCS4 */
3787 3, /* CONF_HW_RXTX_RATE_MCS3 */
3788 2, /* CONF_HW_RXTX_RATE_MCS2 */
3789 1, /* CONF_HW_RXTX_RATE_MCS1 */
3790 0, /* CONF_HW_RXTX_RATE_MCS0 */
3791
3792 7, /* CONF_HW_RXTX_RATE_54 */
3793 6, /* CONF_HW_RXTX_RATE_48 */
3794 5, /* CONF_HW_RXTX_RATE_36 */
3795 4, /* CONF_HW_RXTX_RATE_24 */
3796
3797 /* TI-specific rate */
3798 CONF_HW_RXTX_RATE_UNSUPPORTED, /* CONF_HW_RXTX_RATE_22 */
3799
3800 3, /* CONF_HW_RXTX_RATE_18 */
3801 2, /* CONF_HW_RXTX_RATE_12 */
3802 CONF_HW_RXTX_RATE_UNSUPPORTED, /* CONF_HW_RXTX_RATE_11 */
3803 1, /* CONF_HW_RXTX_RATE_9 */
3804 0, /* CONF_HW_RXTX_RATE_6 */
3805 CONF_HW_RXTX_RATE_UNSUPPORTED, /* CONF_HW_RXTX_RATE_5_5 */
3806 CONF_HW_RXTX_RATE_UNSUPPORTED, /* CONF_HW_RXTX_RATE_2 */
3807 CONF_HW_RXTX_RATE_UNSUPPORTED /* CONF_HW_RXTX_RATE_1 */
3808 };
3809
3810 static struct ieee80211_supported_band wl1271_band_5ghz = {
3811 .channels = wl1271_channels_5ghz,
3812 .n_channels = ARRAY_SIZE(wl1271_channels_5ghz),
3813 .bitrates = wl1271_rates_5ghz,
3814 .n_bitrates = ARRAY_SIZE(wl1271_rates_5ghz),
3815 .ht_cap = WL12XX_HT_CAP,
3816 };
3817
3818 static const u8 *wl1271_band_rate_to_idx[] = {
3819 [IEEE80211_BAND_2GHZ] = wl1271_rate_to_idx_2ghz,
3820 [IEEE80211_BAND_5GHZ] = wl1271_rate_to_idx_5ghz
3821 };
3822
3823 static const struct ieee80211_ops wl1271_ops = {
3824 .start = wl1271_op_start,
3825 .stop = wl1271_op_stop,
3826 .add_interface = wl1271_op_add_interface,
3827 .remove_interface = wl1271_op_remove_interface,
3828 #ifdef CONFIG_PM
3829 .suspend = wl1271_op_suspend,
3830 .resume = wl1271_op_resume,
3831 #endif
3832 .config = wl1271_op_config,
3833 .prepare_multicast = wl1271_op_prepare_multicast,
3834 .configure_filter = wl1271_op_configure_filter,
3835 .tx = wl1271_op_tx,
3836 .set_key = wl1271_op_set_key,
3837 .hw_scan = wl1271_op_hw_scan,
3838 .sched_scan_start = wl1271_op_sched_scan_start,
3839 .sched_scan_stop = wl1271_op_sched_scan_stop,
3840 .bss_info_changed = wl1271_op_bss_info_changed,
3841 .set_frag_threshold = wl1271_op_set_frag_threshold,
3842 .set_rts_threshold = wl1271_op_set_rts_threshold,
3843 .conf_tx = wl1271_op_conf_tx,
3844 .get_tsf = wl1271_op_get_tsf,
3845 .get_survey = wl1271_op_get_survey,
3846 .sta_add = wl1271_op_sta_add,
3847 .sta_remove = wl1271_op_sta_remove,
3848 .ampdu_action = wl1271_op_ampdu_action,
3849 .tx_frames_pending = wl1271_tx_frames_pending,
3850 CFG80211_TESTMODE_CMD(wl1271_tm_cmd)
3851 };
3852
3853
3854 u8 wl1271_rate_to_idx(int rate, enum ieee80211_band band)
3855 {
3856 u8 idx;
3857
3858 BUG_ON(band >= sizeof(wl1271_band_rate_to_idx)/sizeof(u8 *));
3859
3860 if (unlikely(rate >= CONF_HW_RXTX_RATE_MAX)) {
3861 wl1271_error("Illegal RX rate from HW: %d", rate);
3862 return 0;
3863 }
3864
3865 idx = wl1271_band_rate_to_idx[band][rate];
3866 if (unlikely(idx == CONF_HW_RXTX_RATE_UNSUPPORTED)) {
3867 wl1271_error("Unsupported RX rate from HW: %d", rate);
3868 return 0;
3869 }
3870
3871 return idx;
3872 }
3873
3874 static ssize_t wl1271_sysfs_show_bt_coex_state(struct device *dev,
3875 struct device_attribute *attr,
3876 char *buf)
3877 {
3878 struct wl1271 *wl = dev_get_drvdata(dev);
3879 ssize_t len;
3880
3881 len = PAGE_SIZE;
3882
3883 mutex_lock(&wl->mutex);
3884 len = snprintf(buf, len, "%d\n\n0 - off\n1 - on\n",
3885 wl->sg_enabled);
3886 mutex_unlock(&wl->mutex);
3887
3888 return len;
3889
3890 }
3891
3892 static ssize_t wl1271_sysfs_store_bt_coex_state(struct device *dev,
3893 struct device_attribute *attr,
3894 const char *buf, size_t count)
3895 {
3896 struct wl1271 *wl = dev_get_drvdata(dev);
3897 unsigned long res;
3898 int ret;
3899
3900 ret = kstrtoul(buf, 10, &res);
3901 if (ret < 0) {
3902 wl1271_warning("incorrect value written to bt_coex_mode");
3903 return count;
3904 }
3905
3906 mutex_lock(&wl->mutex);
3907
3908 res = !!res;
3909
3910 if (res == wl->sg_enabled)
3911 goto out;
3912
3913 wl->sg_enabled = res;
3914
3915 if (wl->state == WL1271_STATE_OFF)
3916 goto out;
3917
3918 ret = wl1271_ps_elp_wakeup(wl);
3919 if (ret < 0)
3920 goto out;
3921
3922 wl1271_acx_sg_enable(wl, wl->sg_enabled);
3923 wl1271_ps_elp_sleep(wl);
3924
3925 out:
3926 mutex_unlock(&wl->mutex);
3927 return count;
3928 }
3929
3930 static DEVICE_ATTR(bt_coex_state, S_IRUGO | S_IWUSR,
3931 wl1271_sysfs_show_bt_coex_state,
3932 wl1271_sysfs_store_bt_coex_state);
3933
3934 static ssize_t wl1271_sysfs_show_hw_pg_ver(struct device *dev,
3935 struct device_attribute *attr,
3936 char *buf)
3937 {
3938 struct wl1271 *wl = dev_get_drvdata(dev);
3939 ssize_t len;
3940
3941 len = PAGE_SIZE;
3942
3943 mutex_lock(&wl->mutex);
3944 if (wl->hw_pg_ver >= 0)
3945 len = snprintf(buf, len, "%d\n", wl->hw_pg_ver);
3946 else
3947 len = snprintf(buf, len, "n/a\n");
3948 mutex_unlock(&wl->mutex);
3949
3950 return len;
3951 }
3952
3953 static DEVICE_ATTR(hw_pg_ver, S_IRUGO | S_IWUSR,
3954 wl1271_sysfs_show_hw_pg_ver, NULL);
3955
3956 int wl1271_register_hw(struct wl1271 *wl)
3957 {
3958 int ret;
3959
3960 if (wl->mac80211_registered)
3961 return 0;
3962
3963 ret = wl1271_fetch_nvs(wl);
3964 if (ret == 0) {
3965 /* NOTE: The wl->nvs->nvs element must be first, in
3966 * order to simplify the casting, we assume it is at
3967 * the beginning of the wl->nvs structure.
3968 */
3969 u8 *nvs_ptr = (u8 *)wl->nvs;
3970
3971 wl->mac_addr[0] = nvs_ptr[11];
3972 wl->mac_addr[1] = nvs_ptr[10];
3973 wl->mac_addr[2] = nvs_ptr[6];
3974 wl->mac_addr[3] = nvs_ptr[5];
3975 wl->mac_addr[4] = nvs_ptr[4];
3976 wl->mac_addr[5] = nvs_ptr[3];
3977 }
3978
3979 SET_IEEE80211_PERM_ADDR(wl->hw, wl->mac_addr);
3980
3981 ret = ieee80211_register_hw(wl->hw);
3982 if (ret < 0) {
3983 wl1271_error("unable to register mac80211 hw: %d", ret);
3984 return ret;
3985 }
3986
3987 wl->mac80211_registered = true;
3988
3989 wl1271_debugfs_init(wl);
3990
3991 register_netdevice_notifier(&wl1271_dev_notifier);
3992
3993 wl1271_notice("loaded");
3994
3995 return 0;
3996 }
3997 EXPORT_SYMBOL_GPL(wl1271_register_hw);
3998
3999 void wl1271_unregister_hw(struct wl1271 *wl)
4000 {
4001 if (wl->state == WL1271_STATE_PLT)
4002 __wl1271_plt_stop(wl);
4003
4004 unregister_netdevice_notifier(&wl1271_dev_notifier);
4005 ieee80211_unregister_hw(wl->hw);
4006 wl->mac80211_registered = false;
4007
4008 }
4009 EXPORT_SYMBOL_GPL(wl1271_unregister_hw);
4010
4011 int wl1271_init_ieee80211(struct wl1271 *wl)
4012 {
4013 static const u32 cipher_suites[] = {
4014 WLAN_CIPHER_SUITE_WEP40,
4015 WLAN_CIPHER_SUITE_WEP104,
4016 WLAN_CIPHER_SUITE_TKIP,
4017 WLAN_CIPHER_SUITE_CCMP,
4018 WL1271_CIPHER_SUITE_GEM,
4019 };
4020
4021 /* The tx descriptor buffer and the TKIP space. */
4022 wl->hw->extra_tx_headroom = WL1271_TKIP_IV_SPACE +
4023 sizeof(struct wl1271_tx_hw_descr);
4024
4025 /* unit us */
4026 /* FIXME: find a proper value */
4027 wl->hw->channel_change_time = 10000;
4028 wl->hw->max_listen_interval = wl->conf.conn.max_listen_interval;
4029
4030 wl->hw->flags = IEEE80211_HW_SIGNAL_DBM |
4031 IEEE80211_HW_BEACON_FILTER |
4032 IEEE80211_HW_SUPPORTS_PS |
4033 IEEE80211_HW_SUPPORTS_UAPSD |
4034 IEEE80211_HW_HAS_RATE_CONTROL |
4035 IEEE80211_HW_CONNECTION_MONITOR |
4036 IEEE80211_HW_SUPPORTS_CQM_RSSI |
4037 IEEE80211_HW_REPORTS_TX_ACK_STATUS |
4038 IEEE80211_HW_SPECTRUM_MGMT |
4039 IEEE80211_HW_AP_LINK_PS;
4040
4041 wl->hw->wiphy->cipher_suites = cipher_suites;
4042 wl->hw->wiphy->n_cipher_suites = ARRAY_SIZE(cipher_suites);
4043
4044 wl->hw->wiphy->interface_modes = BIT(NL80211_IFTYPE_STATION) |
4045 BIT(NL80211_IFTYPE_ADHOC) | BIT(NL80211_IFTYPE_AP);
4046 wl->hw->wiphy->max_scan_ssids = 1;
4047 /*
4048 * Maximum length of elements in scanning probe request templates
4049 * should be the maximum length possible for a template, without
4050 * the IEEE80211 header of the template
4051 */
4052 wl->hw->wiphy->max_scan_ie_len = WL1271_CMD_TEMPL_MAX_SIZE -
4053 sizeof(struct ieee80211_header);
4054
4055 /* make sure all our channels fit in the scanned_ch bitmask */
4056 BUILD_BUG_ON(ARRAY_SIZE(wl1271_channels) +
4057 ARRAY_SIZE(wl1271_channels_5ghz) >
4058 WL1271_MAX_CHANNELS);
4059 /*
4060 * We keep local copies of the band structs because we need to
4061 * modify them on a per-device basis.
4062 */
4063 memcpy(&wl->bands[IEEE80211_BAND_2GHZ], &wl1271_band_2ghz,
4064 sizeof(wl1271_band_2ghz));
4065 memcpy(&wl->bands[IEEE80211_BAND_5GHZ], &wl1271_band_5ghz,
4066 sizeof(wl1271_band_5ghz));
4067
4068 wl->hw->wiphy->bands[IEEE80211_BAND_2GHZ] =
4069 &wl->bands[IEEE80211_BAND_2GHZ];
4070 wl->hw->wiphy->bands[IEEE80211_BAND_5GHZ] =
4071 &wl->bands[IEEE80211_BAND_5GHZ];
4072
4073 wl->hw->queues = 4;
4074 wl->hw->max_rates = 1;
4075
4076 wl->hw->wiphy->reg_notifier = wl1271_reg_notify;
4077
4078 SET_IEEE80211_DEV(wl->hw, wl1271_wl_to_dev(wl));
4079
4080 wl->hw->sta_data_size = sizeof(struct wl1271_station);
4081
4082 wl->hw->max_rx_aggregation_subframes = 8;
4083
4084 return 0;
4085 }
4086 EXPORT_SYMBOL_GPL(wl1271_init_ieee80211);
4087
4088 #define WL1271_DEFAULT_CHANNEL 0
4089
4090 struct ieee80211_hw *wl1271_alloc_hw(void)
4091 {
4092 struct ieee80211_hw *hw;
4093 struct platform_device *plat_dev = NULL;
4094 struct wl1271 *wl;
4095 int i, j, ret;
4096 unsigned int order;
4097
4098 hw = ieee80211_alloc_hw(sizeof(*wl), &wl1271_ops);
4099 if (!hw) {
4100 wl1271_error("could not alloc ieee80211_hw");
4101 ret = -ENOMEM;
4102 goto err_hw_alloc;
4103 }
4104
4105 plat_dev = kmemdup(&wl1271_device, sizeof(wl1271_device), GFP_KERNEL);
4106 if (!plat_dev) {
4107 wl1271_error("could not allocate platform_device");
4108 ret = -ENOMEM;
4109 goto err_plat_alloc;
4110 }
4111
4112 wl = hw->priv;
4113 memset(wl, 0, sizeof(*wl));
4114
4115 INIT_LIST_HEAD(&wl->list);
4116
4117 wl->hw = hw;
4118 wl->plat_dev = plat_dev;
4119
4120 for (i = 0; i < NUM_TX_QUEUES; i++)
4121 skb_queue_head_init(&wl->tx_queue[i]);
4122
4123 for (i = 0; i < NUM_TX_QUEUES; i++)
4124 for (j = 0; j < AP_MAX_LINKS; j++)
4125 skb_queue_head_init(&wl->links[j].tx_queue[i]);
4126
4127 skb_queue_head_init(&wl->deferred_rx_queue);
4128 skb_queue_head_init(&wl->deferred_tx_queue);
4129
4130 INIT_DELAYED_WORK(&wl->elp_work, wl1271_elp_work);
4131 INIT_DELAYED_WORK(&wl->pspoll_work, wl1271_pspoll_work);
4132 INIT_WORK(&wl->netstack_work, wl1271_netstack_work);
4133 INIT_WORK(&wl->tx_work, wl1271_tx_work);
4134 INIT_WORK(&wl->recovery_work, wl1271_recovery_work);
4135 INIT_DELAYED_WORK(&wl->scan_complete_work, wl1271_scan_complete_work);
4136 INIT_WORK(&wl->rx_streaming_enable_work,
4137 wl1271_rx_streaming_enable_work);
4138 INIT_WORK(&wl->rx_streaming_disable_work,
4139 wl1271_rx_streaming_disable_work);
4140
4141 wl->freezable_wq = create_freezable_workqueue("wl12xx_wq");
4142 if (!wl->freezable_wq) {
4143 ret = -ENOMEM;
4144 goto err_hw;
4145 }
4146
4147 wl->channel = WL1271_DEFAULT_CHANNEL;
4148 wl->beacon_int = WL1271_DEFAULT_BEACON_INT;
4149 wl->default_key = 0;
4150 wl->rx_counter = 0;
4151 wl->rx_config = WL1271_DEFAULT_STA_RX_CONFIG;
4152 wl->rx_filter = WL1271_DEFAULT_STA_RX_FILTER;
4153 wl->psm_entry_retry = 0;
4154 wl->power_level = WL1271_DEFAULT_POWER_LEVEL;
4155 wl->basic_rate_set = CONF_TX_RATE_MASK_BASIC;
4156 wl->basic_rate = CONF_TX_RATE_MASK_BASIC;
4157 wl->rate_set = CONF_TX_RATE_MASK_BASIC;
4158 wl->band = IEEE80211_BAND_2GHZ;
4159 wl->vif = NULL;
4160 wl->flags = 0;
4161 wl->sg_enabled = true;
4162 wl->hw_pg_ver = -1;
4163 wl->bss_type = MAX_BSS_TYPE;
4164 wl->set_bss_type = MAX_BSS_TYPE;
4165 wl->fw_bss_type = MAX_BSS_TYPE;
4166 wl->last_tx_hlid = 0;
4167 wl->ap_ps_map = 0;
4168 wl->ap_fw_ps_map = 0;
4169 wl->quirks = 0;
4170 wl->platform_quirks = 0;
4171 wl->sched_scanning = false;
4172 setup_timer(&wl->rx_streaming_timer, wl1271_rx_streaming_timer,
4173 (unsigned long) wl);
4174
4175 memset(wl->tx_frames_map, 0, sizeof(wl->tx_frames_map));
4176 for (i = 0; i < ACX_TX_DESCRIPTORS; i++)
4177 wl->tx_frames[i] = NULL;
4178
4179 spin_lock_init(&wl->wl_lock);
4180
4181 wl->state = WL1271_STATE_OFF;
4182 mutex_init(&wl->mutex);
4183
4184 /* Apply default driver configuration. */
4185 wl1271_conf_init(wl);
4186
4187 order = get_order(WL1271_AGGR_BUFFER_SIZE);
4188 wl->aggr_buf = (u8 *)__get_free_pages(GFP_KERNEL, order);
4189 if (!wl->aggr_buf) {
4190 ret = -ENOMEM;
4191 goto err_wq;
4192 }
4193
4194 wl->dummy_packet = wl12xx_alloc_dummy_packet(wl);
4195 if (!wl->dummy_packet) {
4196 ret = -ENOMEM;
4197 goto err_aggr;
4198 }
4199
4200 /* Register platform device */
4201 ret = platform_device_register(wl->plat_dev);
4202 if (ret) {
4203 wl1271_error("couldn't register platform device");
4204 goto err_dummy_packet;
4205 }
4206 dev_set_drvdata(&wl->plat_dev->dev, wl);
4207
4208 /* Create sysfs file to control bt coex state */
4209 ret = device_create_file(&wl->plat_dev->dev, &dev_attr_bt_coex_state);
4210 if (ret < 0) {
4211 wl1271_error("failed to create sysfs file bt_coex_state");
4212 goto err_platform;
4213 }
4214
4215 /* Create sysfs file to get HW PG version */
4216 ret = device_create_file(&wl->plat_dev->dev, &dev_attr_hw_pg_ver);
4217 if (ret < 0) {
4218 wl1271_error("failed to create sysfs file hw_pg_ver");
4219 goto err_bt_coex_state;
4220 }
4221
4222 return hw;
4223
4224 err_bt_coex_state:
4225 device_remove_file(&wl->plat_dev->dev, &dev_attr_bt_coex_state);
4226
4227 err_platform:
4228 platform_device_unregister(wl->plat_dev);
4229
4230 err_dummy_packet:
4231 dev_kfree_skb(wl->dummy_packet);
4232
4233 err_aggr:
4234 free_pages((unsigned long)wl->aggr_buf, order);
4235
4236 err_wq:
4237 destroy_workqueue(wl->freezable_wq);
4238
4239 err_hw:
4240 wl1271_debugfs_exit(wl);
4241 kfree(plat_dev);
4242
4243 err_plat_alloc:
4244 ieee80211_free_hw(hw);
4245
4246 err_hw_alloc:
4247
4248 return ERR_PTR(ret);
4249 }
4250 EXPORT_SYMBOL_GPL(wl1271_alloc_hw);
4251
4252 int wl1271_free_hw(struct wl1271 *wl)
4253 {
4254 platform_device_unregister(wl->plat_dev);
4255 dev_kfree_skb(wl->dummy_packet);
4256 free_pages((unsigned long)wl->aggr_buf,
4257 get_order(WL1271_AGGR_BUFFER_SIZE));
4258 kfree(wl->plat_dev);
4259
4260 wl1271_debugfs_exit(wl);
4261
4262 vfree(wl->fw);
4263 wl->fw = NULL;
4264 kfree(wl->nvs);
4265 wl->nvs = NULL;
4266
4267 kfree(wl->fw_status);
4268 kfree(wl->tx_res_if);
4269 destroy_workqueue(wl->freezable_wq);
4270
4271 ieee80211_free_hw(wl->hw);
4272
4273 return 0;
4274 }
4275 EXPORT_SYMBOL_GPL(wl1271_free_hw);
4276
4277 u32 wl12xx_debug_level = DEBUG_NONE;
4278 EXPORT_SYMBOL_GPL(wl12xx_debug_level);
4279 module_param_named(debug_level, wl12xx_debug_level, uint, S_IRUSR | S_IWUSR);
4280 MODULE_PARM_DESC(debug_level, "wl12xx debugging level");
4281
4282 MODULE_LICENSE("GPL");
4283 MODULE_AUTHOR("Luciano Coelho <coelho@ti.com>");
4284 MODULE_AUTHOR("Juuso Oikarinen <juuso.oikarinen@nokia.com>");
Linux 2.6 ibm-acpi/thinkpad-acpi driver git tree