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path: root/drivers/net/wireless/wl12xx/main.c
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-rw-r--r--drivers/net/wireless/wl12xx/main.c4095
1 files changed, 4095 insertions, 0 deletions
diff --git a/drivers/net/wireless/wl12xx/main.c b/drivers/net/wireless/wl12xx/main.c
new file mode 100644
index 000000000000..e6497dc669df
--- /dev/null
+++ b/drivers/net/wireless/wl12xx/main.c
@@ -0,0 +1,4095 @@
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
52static 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 .hci_io_ds = HCI_IO_DS_6MA,
366};
367
368static void __wl1271_op_remove_interface(struct wl1271 *wl,
369 bool reset_tx_queues);
370static void wl1271_free_ap_keys(struct wl1271 *wl);
371
372
373static void wl1271_device_release(struct device *dev)
374{
375
376}
377
378static struct platform_device wl1271_device = {
379 .name = "wl1271",
380 .id = -1,
381
382 /* device model insists to have a release function */
383 .dev = {
384 .release = wl1271_device_release,
385 },
386};
387
388static DEFINE_MUTEX(wl_list_mutex);
389static LIST_HEAD(wl_list);
390
391static int wl1271_dev_notify(struct notifier_block *me, unsigned long what,
392 void *arg)
393{
394 struct net_device *dev = arg;
395 struct wireless_dev *wdev;
396 struct wiphy *wiphy;
397 struct ieee80211_hw *hw;
398 struct wl1271 *wl;
399 struct wl1271 *wl_temp;
400 int ret = 0;
401
402 /* Check that this notification is for us. */
403 if (what != NETDEV_CHANGE)
404 return NOTIFY_DONE;
405
406 wdev = dev->ieee80211_ptr;
407 if (wdev == NULL)
408 return NOTIFY_DONE;
409
410 wiphy = wdev->wiphy;
411 if (wiphy == NULL)
412 return NOTIFY_DONE;
413
414 hw = wiphy_priv(wiphy);
415 if (hw == NULL)
416 return NOTIFY_DONE;
417
418 wl_temp = hw->priv;
419 mutex_lock(&wl_list_mutex);
420 list_for_each_entry(wl, &wl_list, list) {
421 if (wl == wl_temp)
422 break;
423 }
424 mutex_unlock(&wl_list_mutex);
425 if (wl != wl_temp)
426 return NOTIFY_DONE;
427
428 mutex_lock(&wl->mutex);
429
430 if (wl->state == WL1271_STATE_OFF)
431 goto out;
432
433 if (!test_bit(WL1271_FLAG_STA_ASSOCIATED, &wl->flags))
434 goto out;
435
436 ret = wl1271_ps_elp_wakeup(wl);
437 if (ret < 0)
438 goto out;
439
440 if ((dev->operstate == IF_OPER_UP) &&
441 !test_and_set_bit(WL1271_FLAG_STA_STATE_SENT, &wl->flags)) {
442 wl1271_cmd_set_sta_state(wl);
443 wl1271_info("Association completed.");
444 }
445
446 wl1271_ps_elp_sleep(wl);
447
448out:
449 mutex_unlock(&wl->mutex);
450
451 return NOTIFY_OK;
452}
453
454static int wl1271_reg_notify(struct wiphy *wiphy,
455 struct regulatory_request *request)
456{
457 struct ieee80211_supported_band *band;
458 struct ieee80211_channel *ch;
459 int i;
460
461 band = wiphy->bands[IEEE80211_BAND_5GHZ];
462 for (i = 0; i < band->n_channels; i++) {
463 ch = &band->channels[i];
464 if (ch->flags & IEEE80211_CHAN_DISABLED)
465 continue;
466
467 if (ch->flags & IEEE80211_CHAN_RADAR)
468 ch->flags |= IEEE80211_CHAN_NO_IBSS |
469 IEEE80211_CHAN_PASSIVE_SCAN;
470
471 }
472
473 return 0;
474}
475
476static void wl1271_conf_init(struct wl1271 *wl)
477{
478
479 /*
480 * This function applies the default configuration to the driver. This
481 * function is invoked upon driver load (spi probe.)
482 *
483 * The configuration is stored in a run-time structure in order to
484 * facilitate for run-time adjustment of any of the parameters. Making
485 * changes to the configuration structure will apply the new values on
486 * the next interface up (wl1271_op_start.)
487 */
488
489 /* apply driver default configuration */
490 memcpy(&wl->conf, &default_conf, sizeof(default_conf));
491}
492
493
494static int wl1271_plt_init(struct wl1271 *wl)
495{
496 struct conf_tx_ac_category *conf_ac;
497 struct conf_tx_tid *conf_tid;
498 int ret, i;
499
500 if (wl->chip.id == CHIP_ID_1283_PG20)
501 ret = wl128x_cmd_general_parms(wl);
502 else
503 ret = wl1271_cmd_general_parms(wl);
504 if (ret < 0)
505 return ret;
506
507 if (wl->chip.id == CHIP_ID_1283_PG20)
508 ret = wl128x_cmd_radio_parms(wl);
509 else
510 ret = wl1271_cmd_radio_parms(wl);
511 if (ret < 0)
512 return ret;
513
514 if (wl->chip.id != CHIP_ID_1283_PG20) {
515 ret = wl1271_cmd_ext_radio_parms(wl);
516 if (ret < 0)
517 return ret;
518 }
519 if (ret < 0)
520 return ret;
521
522 /* Chip-specific initializations */
523 ret = wl1271_chip_specific_init(wl);
524 if (ret < 0)
525 return ret;
526
527 ret = wl1271_sta_init_templates_config(wl);
528 if (ret < 0)
529 return ret;
530
531 ret = wl1271_acx_init_mem_config(wl);
532 if (ret < 0)
533 return ret;
534
535 /* PHY layer config */
536 ret = wl1271_init_phy_config(wl);
537 if (ret < 0)
538 goto out_free_memmap;
539
540 ret = wl1271_acx_dco_itrim_params(wl);
541 if (ret < 0)
542 goto out_free_memmap;
543
544 /* Initialize connection monitoring thresholds */
545 ret = wl1271_acx_conn_monit_params(wl, false);
546 if (ret < 0)
547 goto out_free_memmap;
548
549 /* Bluetooth WLAN coexistence */
550 ret = wl1271_init_pta(wl);
551 if (ret < 0)
552 goto out_free_memmap;
553
554 /* FM WLAN coexistence */
555 ret = wl1271_acx_fm_coex(wl);
556 if (ret < 0)
557 goto out_free_memmap;
558
559 /* Energy detection */
560 ret = wl1271_init_energy_detection(wl);
561 if (ret < 0)
562 goto out_free_memmap;
563
564 ret = wl1271_acx_sta_mem_cfg(wl);
565 if (ret < 0)
566 goto out_free_memmap;
567
568 /* Default fragmentation threshold */
569 ret = wl1271_acx_frag_threshold(wl, wl->conf.tx.frag_threshold);
570 if (ret < 0)
571 goto out_free_memmap;
572
573 /* Default TID/AC configuration */
574 BUG_ON(wl->conf.tx.tid_conf_count != wl->conf.tx.ac_conf_count);
575 for (i = 0; i < wl->conf.tx.tid_conf_count; i++) {
576 conf_ac = &wl->conf.tx.ac_conf[i];
577 ret = wl1271_acx_ac_cfg(wl, conf_ac->ac, conf_ac->cw_min,
578 conf_ac->cw_max, conf_ac->aifsn,
579 conf_ac->tx_op_limit);
580 if (ret < 0)
581 goto out_free_memmap;
582
583 conf_tid = &wl->conf.tx.tid_conf[i];
584 ret = wl1271_acx_tid_cfg(wl, conf_tid->queue_id,
585 conf_tid->channel_type,
586 conf_tid->tsid,
587 conf_tid->ps_scheme,
588 conf_tid->ack_policy,
589 conf_tid->apsd_conf[0],
590 conf_tid->apsd_conf[1]);
591 if (ret < 0)
592 goto out_free_memmap;
593 }
594
595 /* Enable data path */
596 ret = wl1271_cmd_data_path(wl, 1);
597 if (ret < 0)
598 goto out_free_memmap;
599
600 /* Configure for CAM power saving (ie. always active) */
601 ret = wl1271_acx_sleep_auth(wl, WL1271_PSM_CAM);
602 if (ret < 0)
603 goto out_free_memmap;
604
605 /* configure PM */
606 ret = wl1271_acx_pm_config(wl);
607 if (ret < 0)
608 goto out_free_memmap;
609
610 return 0;
611
612 out_free_memmap:
613 kfree(wl->target_mem_map);
614 wl->target_mem_map = NULL;
615
616 return ret;
617}
618
619static void wl1271_irq_ps_regulate_link(struct wl1271 *wl, u8 hlid, u8 tx_blks)
620{
621 bool fw_ps;
622
623 /* only regulate station links */
624 if (hlid < WL1271_AP_STA_HLID_START)
625 return;
626
627 fw_ps = test_bit(hlid, (unsigned long *)&wl->ap_fw_ps_map);
628
629 /*
630 * Wake up from high level PS if the STA is asleep with too little
631 * blocks in FW or if the STA is awake.
632 */
633 if (!fw_ps || tx_blks < WL1271_PS_STA_MAX_BLOCKS)
634 wl1271_ps_link_end(wl, hlid);
635
636 /* Start high-level PS if the STA is asleep with enough blocks in FW */
637 else if (fw_ps && tx_blks >= WL1271_PS_STA_MAX_BLOCKS)
638 wl1271_ps_link_start(wl, hlid, true);
639}
640
641static void wl1271_irq_update_links_status(struct wl1271 *wl,
642 struct wl1271_fw_ap_status *status)
643{
644 u32 cur_fw_ps_map;
645 u8 hlid;
646
647 cur_fw_ps_map = le32_to_cpu(status->link_ps_bitmap);
648 if (wl->ap_fw_ps_map != cur_fw_ps_map) {
649 wl1271_debug(DEBUG_PSM,
650 "link ps prev 0x%x cur 0x%x changed 0x%x",
651 wl->ap_fw_ps_map, cur_fw_ps_map,
652 wl->ap_fw_ps_map ^ cur_fw_ps_map);
653
654 wl->ap_fw_ps_map = cur_fw_ps_map;
655 }
656
657 for (hlid = WL1271_AP_STA_HLID_START; hlid < AP_MAX_LINKS; hlid++) {
658 u8 cnt = status->tx_lnk_free_blks[hlid] -
659 wl->links[hlid].prev_freed_blks;
660
661 wl->links[hlid].prev_freed_blks =
662 status->tx_lnk_free_blks[hlid];
663 wl->links[hlid].allocated_blks -= cnt;
664
665 wl1271_irq_ps_regulate_link(wl, hlid,
666 wl->links[hlid].allocated_blks);
667 }
668}
669
670static void wl1271_fw_status(struct wl1271 *wl,
671 struct wl1271_fw_full_status *full_status)
672{
673 struct wl1271_fw_common_status *status = &full_status->common;
674 struct timespec ts;
675 u32 old_tx_blk_count = wl->tx_blocks_available;
676 u32 freed_blocks = 0;
677 int i;
678
679 if (wl->bss_type == BSS_TYPE_AP_BSS) {
680 wl1271_raw_read(wl, FW_STATUS_ADDR, status,
681 sizeof(struct wl1271_fw_ap_status), false);
682 } else {
683 wl1271_raw_read(wl, FW_STATUS_ADDR, status,
684 sizeof(struct wl1271_fw_sta_status), false);
685 }
686
687 wl1271_debug(DEBUG_IRQ, "intr: 0x%x (fw_rx_counter = %d, "
688 "drv_rx_counter = %d, tx_results_counter = %d)",
689 status->intr,
690 status->fw_rx_counter,
691 status->drv_rx_counter,
692 status->tx_results_counter);
693
694 /* update number of available TX blocks */
695 for (i = 0; i < NUM_TX_QUEUES; i++) {
696 freed_blocks += le32_to_cpu(status->tx_released_blks[i]) -
697 wl->tx_blocks_freed[i];
698
699 wl->tx_blocks_freed[i] =
700 le32_to_cpu(status->tx_released_blks[i]);
701 }
702
703 wl->tx_allocated_blocks -= freed_blocks;
704
705 if (wl->bss_type == BSS_TYPE_AP_BSS) {
706 /* Update num of allocated TX blocks per link and ps status */
707 wl1271_irq_update_links_status(wl, &full_status->ap);
708 wl->tx_blocks_available += freed_blocks;
709 } else {
710 int avail = full_status->sta.tx_total - wl->tx_allocated_blocks;
711
712 /*
713 * The FW might change the total number of TX memblocks before
714 * we get a notification about blocks being released. Thus, the
715 * available blocks calculation might yield a temporary result
716 * which is lower than the actual available blocks. Keeping in
717 * mind that only blocks that were allocated can be moved from
718 * TX to RX, tx_blocks_available should never decrease here.
719 */
720 wl->tx_blocks_available = max((int)wl->tx_blocks_available,
721 avail);
722 }
723
724 /* if more blocks are available now, tx work can be scheduled */
725 if (wl->tx_blocks_available > old_tx_blk_count)
726 clear_bit(WL1271_FLAG_FW_TX_BUSY, &wl->flags);
727
728 /* update the host-chipset time offset */
729 getnstimeofday(&ts);
730 wl->time_offset = (timespec_to_ns(&ts) >> 10) -
731 (s64)le32_to_cpu(status->fw_localtime);
732}
733
734static void wl1271_flush_deferred_work(struct wl1271 *wl)
735{
736 struct sk_buff *skb;
737
738 /* Pass all received frames to the network stack */
739 while ((skb = skb_dequeue(&wl->deferred_rx_queue)))
740 ieee80211_rx_ni(wl->hw, skb);
741
742 /* Return sent skbs to the network stack */
743 while ((skb = skb_dequeue(&wl->deferred_tx_queue)))
744 ieee80211_tx_status(wl->hw, skb);
745}
746
747static void wl1271_netstack_work(struct work_struct *work)
748{
749 struct wl1271 *wl =
750 container_of(work, struct wl1271, netstack_work);
751
752 do {
753 wl1271_flush_deferred_work(wl);
754 } while (skb_queue_len(&wl->deferred_rx_queue));
755}
756
757#define WL1271_IRQ_MAX_LOOPS 256
758
759irqreturn_t wl1271_irq(int irq, void *cookie)
760{
761 int ret;
762 u32 intr;
763 int loopcount = WL1271_IRQ_MAX_LOOPS;
764 struct wl1271 *wl = (struct wl1271 *)cookie;
765 bool done = false;
766 unsigned int defer_count;
767 unsigned long flags;
768
769 /* TX might be handled here, avoid redundant work */
770 set_bit(WL1271_FLAG_TX_PENDING, &wl->flags);
771 cancel_work_sync(&wl->tx_work);
772
773 /*
774 * In case edge triggered interrupt must be used, we cannot iterate
775 * more than once without introducing race conditions with the hardirq.
776 */
777 if (wl->platform_quirks & WL12XX_PLATFORM_QUIRK_EDGE_IRQ)
778 loopcount = 1;
779
780 mutex_lock(&wl->mutex);
781
782 wl1271_debug(DEBUG_IRQ, "IRQ work");
783
784 if (unlikely(wl->state == WL1271_STATE_OFF))
785 goto out;
786
787 ret = wl1271_ps_elp_wakeup(wl);
788 if (ret < 0)
789 goto out;
790
791 while (!done && loopcount--) {
792 /*
793 * In order to avoid a race with the hardirq, clear the flag
794 * before acknowledging the chip. Since the mutex is held,
795 * wl1271_ps_elp_wakeup cannot be called concurrently.
796 */
797 clear_bit(WL1271_FLAG_IRQ_RUNNING, &wl->flags);
798 smp_mb__after_clear_bit();
799
800 wl1271_fw_status(wl, wl->fw_status);
801 intr = le32_to_cpu(wl->fw_status->common.intr);
802 intr &= WL1271_INTR_MASK;
803 if (!intr) {
804 done = true;
805 continue;
806 }
807
808 if (unlikely(intr & WL1271_ACX_INTR_WATCHDOG)) {
809 wl1271_error("watchdog interrupt received! "
810 "starting recovery.");
811 ieee80211_queue_work(wl->hw, &wl->recovery_work);
812
813 /* restarting the chip. ignore any other interrupt. */
814 goto out;
815 }
816
817 if (likely(intr & WL1271_ACX_INTR_DATA)) {
818 wl1271_debug(DEBUG_IRQ, "WL1271_ACX_INTR_DATA");
819
820 wl1271_rx(wl, &wl->fw_status->common);
821
822 /* Check if any tx blocks were freed */
823 spin_lock_irqsave(&wl->wl_lock, flags);
824 if (!test_bit(WL1271_FLAG_FW_TX_BUSY, &wl->flags) &&
825 wl->tx_queue_count) {
826 spin_unlock_irqrestore(&wl->wl_lock, flags);
827 /*
828 * In order to avoid starvation of the TX path,
829 * call the work function directly.
830 */
831 wl1271_tx_work_locked(wl);
832 } else {
833 spin_unlock_irqrestore(&wl->wl_lock, flags);
834 }
835
836 /* check for tx results */
837 if (wl->fw_status->common.tx_results_counter !=
838 (wl->tx_results_count & 0xff))
839 wl1271_tx_complete(wl);
840
841 /* Make sure the deferred queues don't get too long */
842 defer_count = skb_queue_len(&wl->deferred_tx_queue) +
843 skb_queue_len(&wl->deferred_rx_queue);
844 if (defer_count > WL1271_DEFERRED_QUEUE_LIMIT)
845 wl1271_flush_deferred_work(wl);
846 }
847
848 if (intr & WL1271_ACX_INTR_EVENT_A) {
849 wl1271_debug(DEBUG_IRQ, "WL1271_ACX_INTR_EVENT_A");
850 wl1271_event_handle(wl, 0);
851 }
852
853 if (intr & WL1271_ACX_INTR_EVENT_B) {
854 wl1271_debug(DEBUG_IRQ, "WL1271_ACX_INTR_EVENT_B");
855 wl1271_event_handle(wl, 1);
856 }
857
858 if (intr & WL1271_ACX_INTR_INIT_COMPLETE)
859 wl1271_debug(DEBUG_IRQ,
860 "WL1271_ACX_INTR_INIT_COMPLETE");
861
862 if (intr & WL1271_ACX_INTR_HW_AVAILABLE)
863 wl1271_debug(DEBUG_IRQ, "WL1271_ACX_INTR_HW_AVAILABLE");
864 }
865
866 wl1271_ps_elp_sleep(wl);
867
868out:
869 spin_lock_irqsave(&wl->wl_lock, flags);
870 /* In case TX was not handled here, queue TX work */
871 clear_bit(WL1271_FLAG_TX_PENDING, &wl->flags);
872 if (!test_bit(WL1271_FLAG_FW_TX_BUSY, &wl->flags) &&
873 wl->tx_queue_count)
874 ieee80211_queue_work(wl->hw, &wl->tx_work);
875 spin_unlock_irqrestore(&wl->wl_lock, flags);
876
877 mutex_unlock(&wl->mutex);
878
879 return IRQ_HANDLED;
880}
881EXPORT_SYMBOL_GPL(wl1271_irq);
882
883static int wl1271_fetch_firmware(struct wl1271 *wl)
884{
885 const struct firmware *fw;
886 const char *fw_name;
887 int ret;
888
889 switch (wl->bss_type) {
890 case BSS_TYPE_AP_BSS:
891 if (wl->chip.id == CHIP_ID_1283_PG20)
892 fw_name = WL128X_AP_FW_NAME;
893 else
894 fw_name = WL127X_AP_FW_NAME;
895 break;
896 case BSS_TYPE_IBSS:
897 case BSS_TYPE_STA_BSS:
898 if (wl->chip.id == CHIP_ID_1283_PG20)
899 fw_name = WL128X_FW_NAME;
900 else
901 fw_name = WL1271_FW_NAME;
902 break;
903 default:
904 wl1271_error("no compatible firmware for bss_type %d",
905 wl->bss_type);
906 return -EINVAL;
907 }
908
909 wl1271_debug(DEBUG_BOOT, "booting firmware %s", fw_name);
910
911 ret = request_firmware(&fw, fw_name, wl1271_wl_to_dev(wl));
912
913 if (ret < 0) {
914 wl1271_error("could not get firmware: %d", ret);
915 return ret;
916 }
917
918 if (fw->size % 4) {
919 wl1271_error("firmware size is not multiple of 32 bits: %zu",
920 fw->size);
921 ret = -EILSEQ;
922 goto out;
923 }
924
925 vfree(wl->fw);
926 wl->fw_len = fw->size;
927 wl->fw = vmalloc(wl->fw_len);
928
929 if (!wl->fw) {
930 wl1271_error("could not allocate memory for the firmware");
931 ret = -ENOMEM;
932 goto out;
933 }
934
935 memcpy(wl->fw, fw->data, wl->fw_len);
936 wl->fw_bss_type = wl->bss_type;
937 ret = 0;
938
939out:
940 release_firmware(fw);
941
942 return ret;
943}
944
945static int wl1271_fetch_nvs(struct wl1271 *wl)
946{
947 const struct firmware *fw;
948 int ret;
949
950 ret = request_firmware(&fw, WL12XX_NVS_NAME, wl1271_wl_to_dev(wl));
951
952 if (ret < 0) {
953 wl1271_error("could not get nvs file: %d", ret);
954 return ret;
955 }
956
957 wl->nvs = kmemdup(fw->data, fw->size, GFP_KERNEL);
958
959 if (!wl->nvs) {
960 wl1271_error("could not allocate memory for the nvs file");
961 ret = -ENOMEM;
962 goto out;
963 }
964
965 wl->nvs_len = fw->size;
966
967out:
968 release_firmware(fw);
969
970 return ret;
971}
972
973static void wl1271_recovery_work(struct work_struct *work)
974{
975 struct wl1271 *wl =
976 container_of(work, struct wl1271, recovery_work);
977
978 mutex_lock(&wl->mutex);
979
980 if (wl->state != WL1271_STATE_ON)
981 goto out;
982
983 wl1271_info("Hardware recovery in progress. FW ver: %s pc: 0x%x",
984 wl->chip.fw_ver_str, wl1271_read32(wl, SCR_PAD4));
985
986 if (test_bit(WL1271_FLAG_STA_ASSOCIATED, &wl->flags))
987 ieee80211_connection_loss(wl->vif);
988
989 /* Prevent spurious TX during FW restart */
990 ieee80211_stop_queues(wl->hw);
991
992 if (wl->sched_scanning) {
993 ieee80211_sched_scan_stopped(wl->hw);
994 wl->sched_scanning = false;
995 }
996
997 /* reboot the chipset */
998 __wl1271_op_remove_interface(wl, false);
999 ieee80211_restart_hw(wl->hw);
1000
1001 /*
1002 * Its safe to enable TX now - the queues are stopped after a request
1003 * to restart the HW.
1004 */
1005 ieee80211_wake_queues(wl->hw);
1006
1007out:
1008 mutex_unlock(&wl->mutex);
1009}
1010
1011static void wl1271_fw_wakeup(struct wl1271 *wl)
1012{
1013 u32 elp_reg;
1014
1015 elp_reg = ELPCTRL_WAKE_UP;
1016 wl1271_raw_write32(wl, HW_ACCESS_ELP_CTRL_REG_ADDR, elp_reg);
1017}
1018
1019static int wl1271_setup(struct wl1271 *wl)
1020{
1021 wl->fw_status = kmalloc(sizeof(*wl->fw_status), GFP_KERNEL);
1022 if (!wl->fw_status)
1023 return -ENOMEM;
1024
1025 wl->tx_res_if = kmalloc(sizeof(*wl->tx_res_if), GFP_KERNEL);
1026 if (!wl->tx_res_if) {
1027 kfree(wl->fw_status);
1028 return -ENOMEM;
1029 }
1030
1031 return 0;
1032}
1033
1034static int wl1271_chip_wakeup(struct wl1271 *wl)
1035{
1036 struct wl1271_partition_set partition;
1037 int ret = 0;
1038
1039 msleep(WL1271_PRE_POWER_ON_SLEEP);
1040 ret = wl1271_power_on(wl);
1041 if (ret < 0)
1042 goto out;
1043 msleep(WL1271_POWER_ON_SLEEP);
1044 wl1271_io_reset(wl);
1045 wl1271_io_init(wl);
1046
1047 /* We don't need a real memory partition here, because we only want
1048 * to use the registers at this point. */
1049 memset(&partition, 0, sizeof(partition));
1050 partition.reg.start = REGISTERS_BASE;
1051 partition.reg.size = REGISTERS_DOWN_SIZE;
1052 wl1271_set_partition(wl, &partition);
1053
1054 /* ELP module wake up */
1055 wl1271_fw_wakeup(wl);
1056
1057 /* whal_FwCtrl_BootSm() */
1058
1059 /* 0. read chip id from CHIP_ID */
1060 wl->chip.id = wl1271_read32(wl, CHIP_ID_B);
1061
1062 /* 1. check if chip id is valid */
1063
1064 switch (wl->chip.id) {
1065 case CHIP_ID_1271_PG10:
1066 wl1271_warning("chip id 0x%x (1271 PG10) support is obsolete",
1067 wl->chip.id);
1068
1069 ret = wl1271_setup(wl);
1070 if (ret < 0)
1071 goto out;
1072 break;
1073 case CHIP_ID_1271_PG20:
1074 wl1271_debug(DEBUG_BOOT, "chip id 0x%x (1271 PG20)",
1075 wl->chip.id);
1076
1077 /* end-of-transaction flag should be set in wl127x AP mode */
1078 if (wl->bss_type == BSS_TYPE_AP_BSS)
1079 wl->quirks |= WL12XX_QUIRK_END_OF_TRANSACTION;
1080
1081 ret = wl1271_setup(wl);
1082 if (ret < 0)
1083 goto out;
1084 break;
1085 case CHIP_ID_1283_PG20:
1086 wl1271_debug(DEBUG_BOOT, "chip id 0x%x (1283 PG20)",
1087 wl->chip.id);
1088
1089 ret = wl1271_setup(wl);
1090 if (ret < 0)
1091 goto out;
1092 if (wl1271_set_block_size(wl))
1093 wl->quirks |= WL12XX_QUIRK_BLOCKSIZE_ALIGNMENT;
1094 break;
1095 case CHIP_ID_1283_PG10:
1096 default:
1097 wl1271_warning("unsupported chip id: 0x%x", wl->chip.id);
1098 ret = -ENODEV;
1099 goto out;
1100 }
1101
1102 /* Make sure the firmware type matches the BSS type */
1103 if (wl->fw == NULL || wl->fw_bss_type != wl->bss_type) {
1104 ret = wl1271_fetch_firmware(wl);
1105 if (ret < 0)
1106 goto out;
1107 }
1108
1109 /* No NVS from netlink, try to get it from the filesystem */
1110 if (wl->nvs == NULL) {
1111 ret = wl1271_fetch_nvs(wl);
1112 if (ret < 0)
1113 goto out;
1114 }
1115
1116out:
1117 return ret;
1118}
1119
1120static unsigned int wl1271_get_fw_ver_quirks(struct wl1271 *wl)
1121{
1122 unsigned int quirks = 0;
1123 unsigned int *fw_ver = wl->chip.fw_ver;
1124
1125 /* Only for wl127x */
1126 if ((fw_ver[FW_VER_CHIP] == FW_VER_CHIP_WL127X) &&
1127 /* Check STA version */
1128 (((fw_ver[FW_VER_IF_TYPE] == FW_VER_IF_TYPE_STA) &&
1129 (fw_ver[FW_VER_MINOR] < FW_VER_MINOR_1_SPARE_STA_MIN)) ||
1130 /* Check AP version */
1131 ((fw_ver[FW_VER_IF_TYPE] == FW_VER_IF_TYPE_AP) &&
1132 (fw_ver[FW_VER_MINOR] < FW_VER_MINOR_1_SPARE_AP_MIN))))
1133 quirks |= WL12XX_QUIRK_USE_2_SPARE_BLOCKS;
1134
1135 return quirks;
1136}
1137
1138int wl1271_plt_start(struct wl1271 *wl)
1139{
1140 int retries = WL1271_BOOT_RETRIES;
1141 int ret;
1142
1143 mutex_lock(&wl->mutex);
1144
1145 wl1271_notice("power up");
1146
1147 if (wl->state != WL1271_STATE_OFF) {
1148 wl1271_error("cannot go into PLT state because not "
1149 "in off state: %d", wl->state);
1150 ret = -EBUSY;
1151 goto out;
1152 }
1153
1154 wl->bss_type = BSS_TYPE_STA_BSS;
1155
1156 while (retries) {
1157 retries--;
1158 ret = wl1271_chip_wakeup(wl);
1159 if (ret < 0)
1160 goto power_off;
1161
1162 ret = wl1271_boot(wl);
1163 if (ret < 0)
1164 goto power_off;
1165
1166 ret = wl1271_plt_init(wl);
1167 if (ret < 0)
1168 goto irq_disable;
1169
1170 wl->state = WL1271_STATE_PLT;
1171 wl1271_notice("firmware booted in PLT mode (%s)",
1172 wl->chip.fw_ver_str);
1173
1174 /* Check if any quirks are needed with older fw versions */
1175 wl->quirks |= wl1271_get_fw_ver_quirks(wl);
1176 goto out;
1177
1178irq_disable:
1179 mutex_unlock(&wl->mutex);
1180 /* Unlocking the mutex in the middle of handling is
1181 inherently unsafe. In this case we deem it safe to do,
1182 because we need to let any possibly pending IRQ out of
1183 the system (and while we are WL1271_STATE_OFF the IRQ
1184 work function will not do anything.) Also, any other
1185 possible concurrent operations will fail due to the
1186 current state, hence the wl1271 struct should be safe. */
1187 wl1271_disable_interrupts(wl);
1188 wl1271_flush_deferred_work(wl);
1189 cancel_work_sync(&wl->netstack_work);
1190 mutex_lock(&wl->mutex);
1191power_off:
1192 wl1271_power_off(wl);
1193 }
1194
1195 wl1271_error("firmware boot in PLT mode failed despite %d retries",
1196 WL1271_BOOT_RETRIES);
1197out:
1198 mutex_unlock(&wl->mutex);
1199
1200 return ret;
1201}
1202
1203static int __wl1271_plt_stop(struct wl1271 *wl)
1204{
1205 int ret = 0;
1206
1207 wl1271_notice("power down");
1208
1209 if (wl->state != WL1271_STATE_PLT) {
1210 wl1271_error("cannot power down because not in PLT "
1211 "state: %d", wl->state);
1212 ret = -EBUSY;
1213 goto out;
1214 }
1215
1216 wl1271_power_off(wl);
1217
1218 wl->state = WL1271_STATE_OFF;
1219 wl->rx_counter = 0;
1220
1221 mutex_unlock(&wl->mutex);
1222 wl1271_disable_interrupts(wl);
1223 wl1271_flush_deferred_work(wl);
1224 cancel_work_sync(&wl->netstack_work);
1225 cancel_work_sync(&wl->recovery_work);
1226 mutex_lock(&wl->mutex);
1227out:
1228 return ret;
1229}
1230
1231int wl1271_plt_stop(struct wl1271 *wl)
1232{
1233 int ret;
1234
1235 mutex_lock(&wl->mutex);
1236 ret = __wl1271_plt_stop(wl);
1237 mutex_unlock(&wl->mutex);
1238 return ret;
1239}
1240
1241static void wl1271_op_tx(struct ieee80211_hw *hw, struct sk_buff *skb)
1242{
1243 struct wl1271 *wl = hw->priv;
1244 unsigned long flags;
1245 int q;
1246 u8 hlid = 0;
1247
1248 q = wl1271_tx_get_queue(skb_get_queue_mapping(skb));
1249
1250 if (wl->bss_type == BSS_TYPE_AP_BSS)
1251 hlid = wl1271_tx_get_hlid(skb);
1252
1253 spin_lock_irqsave(&wl->wl_lock, flags);
1254
1255 wl->tx_queue_count++;
1256
1257 /*
1258 * The workqueue is slow to process the tx_queue and we need stop
1259 * the queue here, otherwise the queue will get too long.
1260 */
1261 if (wl->tx_queue_count >= WL1271_TX_QUEUE_HIGH_WATERMARK) {
1262 wl1271_debug(DEBUG_TX, "op_tx: stopping queues");
1263 ieee80211_stop_queues(wl->hw);
1264 set_bit(WL1271_FLAG_TX_QUEUE_STOPPED, &wl->flags);
1265 }
1266
1267 /* queue the packet */
1268 if (wl->bss_type == BSS_TYPE_AP_BSS) {
1269 wl1271_debug(DEBUG_TX, "queue skb hlid %d q %d", hlid, q);
1270 skb_queue_tail(&wl->links[hlid].tx_queue[q], skb);
1271 } else {
1272 skb_queue_tail(&wl->tx_queue[q], skb);
1273 }
1274
1275 /*
1276 * The chip specific setup must run before the first TX packet -
1277 * before that, the tx_work will not be initialized!
1278 */
1279
1280 if (!test_bit(WL1271_FLAG_FW_TX_BUSY, &wl->flags) &&
1281 !test_bit(WL1271_FLAG_TX_PENDING, &wl->flags))
1282 ieee80211_queue_work(wl->hw, &wl->tx_work);
1283
1284 spin_unlock_irqrestore(&wl->wl_lock, flags);
1285}
1286
1287int wl1271_tx_dummy_packet(struct wl1271 *wl)
1288{
1289 unsigned long flags;
1290
1291 spin_lock_irqsave(&wl->wl_lock, flags);
1292 set_bit(WL1271_FLAG_DUMMY_PACKET_PENDING, &wl->flags);
1293 wl->tx_queue_count++;
1294 spin_unlock_irqrestore(&wl->wl_lock, flags);
1295
1296 /* The FW is low on RX memory blocks, so send the dummy packet asap */
1297 if (!test_bit(WL1271_FLAG_FW_TX_BUSY, &wl->flags))
1298 wl1271_tx_work_locked(wl);
1299
1300 /*
1301 * If the FW TX is busy, TX work will be scheduled by the threaded
1302 * interrupt handler function
1303 */
1304 return 0;
1305}
1306
1307/*
1308 * The size of the dummy packet should be at least 1400 bytes. However, in
1309 * order to minimize the number of bus transactions, aligning it to 512 bytes
1310 * boundaries could be beneficial, performance wise
1311 */
1312#define TOTAL_TX_DUMMY_PACKET_SIZE (ALIGN(1400, 512))
1313
1314static struct sk_buff *wl12xx_alloc_dummy_packet(struct wl1271 *wl)
1315{
1316 struct sk_buff *skb;
1317 struct ieee80211_hdr_3addr *hdr;
1318 unsigned int dummy_packet_size;
1319
1320 dummy_packet_size = TOTAL_TX_DUMMY_PACKET_SIZE -
1321 sizeof(struct wl1271_tx_hw_descr) - sizeof(*hdr);
1322
1323 skb = dev_alloc_skb(TOTAL_TX_DUMMY_PACKET_SIZE);
1324 if (!skb) {
1325 wl1271_warning("Failed to allocate a dummy packet skb");
1326 return NULL;
1327 }
1328
1329 skb_reserve(skb, sizeof(struct wl1271_tx_hw_descr));
1330
1331 hdr = (struct ieee80211_hdr_3addr *) skb_put(skb, sizeof(*hdr));
1332 memset(hdr, 0, sizeof(*hdr));
1333 hdr->frame_control = cpu_to_le16(IEEE80211_FTYPE_DATA |
1334 IEEE80211_STYPE_NULLFUNC |
1335 IEEE80211_FCTL_TODS);
1336
1337 memset(skb_put(skb, dummy_packet_size), 0, dummy_packet_size);
1338
1339 /* Dummy packets require the TID to be management */
1340 skb->priority = WL1271_TID_MGMT;
1341
1342 /* Initialize all fields that might be used */
1343 skb_set_queue_mapping(skb, 0);
1344 memset(IEEE80211_SKB_CB(skb), 0, sizeof(struct ieee80211_tx_info));
1345
1346 return skb;
1347}
1348
1349
1350static struct notifier_block wl1271_dev_notifier = {
1351 .notifier_call = wl1271_dev_notify,
1352};
1353
1354#ifdef CONFIG_PM
1355static int wl1271_configure_suspend(struct wl1271 *wl)
1356{
1357 int ret;
1358
1359 if (wl->bss_type != BSS_TYPE_STA_BSS)
1360 return 0;
1361
1362 mutex_lock(&wl->mutex);
1363
1364 ret = wl1271_ps_elp_wakeup(wl);
1365 if (ret < 0)
1366 goto out_unlock;
1367
1368 /* enter psm if needed*/
1369 if (!test_bit(WL1271_FLAG_PSM, &wl->flags)) {
1370 DECLARE_COMPLETION_ONSTACK(compl);
1371
1372 wl->ps_compl = &compl;
1373 ret = wl1271_ps_set_mode(wl, STATION_POWER_SAVE_MODE,
1374 wl->basic_rate, true);
1375 if (ret < 0)
1376 goto out_sleep;
1377
1378 /* we must unlock here so we will be able to get events */
1379 wl1271_ps_elp_sleep(wl);
1380 mutex_unlock(&wl->mutex);
1381
1382 ret = wait_for_completion_timeout(
1383 &compl, msecs_to_jiffies(WL1271_PS_COMPLETE_TIMEOUT));
1384 if (ret <= 0) {
1385 wl1271_warning("couldn't enter ps mode!");
1386 ret = -EBUSY;
1387 goto out;
1388 }
1389
1390 /* take mutex again, and wakeup */
1391 mutex_lock(&wl->mutex);
1392
1393 ret = wl1271_ps_elp_wakeup(wl);
1394 if (ret < 0)
1395 goto out_unlock;
1396 }
1397out_sleep:
1398 wl1271_ps_elp_sleep(wl);
1399out_unlock:
1400 mutex_unlock(&wl->mutex);
1401out:
1402 return ret;
1403
1404}
1405
1406static void wl1271_configure_resume(struct wl1271 *wl)
1407{
1408 int ret;
1409
1410 if (wl->bss_type != BSS_TYPE_STA_BSS)
1411 return;
1412
1413 mutex_lock(&wl->mutex);
1414 ret = wl1271_ps_elp_wakeup(wl);
1415 if (ret < 0)
1416 goto out;
1417
1418 /* exit psm if it wasn't configured */
1419 if (!test_bit(WL1271_FLAG_PSM_REQUESTED, &wl->flags))
1420 wl1271_ps_set_mode(wl, STATION_ACTIVE_MODE,
1421 wl->basic_rate, true);
1422
1423 wl1271_ps_elp_sleep(wl);
1424out:
1425 mutex_unlock(&wl->mutex);
1426}
1427
1428static int wl1271_op_suspend(struct ieee80211_hw *hw,
1429 struct cfg80211_wowlan *wow)
1430{
1431 struct wl1271 *wl = hw->priv;
1432 wl1271_debug(DEBUG_MAC80211, "mac80211 suspend wow=%d", !!wow);
1433 wl->wow_enabled = !!wow;
1434 if (wl->wow_enabled) {
1435 int ret;
1436 ret = wl1271_configure_suspend(wl);
1437 if (ret < 0) {
1438 wl1271_warning("couldn't prepare device to suspend");
1439 return ret;
1440 }
1441 /* flush any remaining work */
1442 wl1271_debug(DEBUG_MAC80211, "flushing remaining works");
1443 flush_delayed_work(&wl->scan_complete_work);
1444
1445 /*
1446 * disable and re-enable interrupts in order to flush
1447 * the threaded_irq
1448 */
1449 wl1271_disable_interrupts(wl);
1450
1451 /*
1452 * set suspended flag to avoid triggering a new threaded_irq
1453 * work. no need for spinlock as interrupts are disabled.
1454 */
1455 set_bit(WL1271_FLAG_SUSPENDED, &wl->flags);
1456
1457 wl1271_enable_interrupts(wl);
1458 flush_work(&wl->tx_work);
1459 flush_delayed_work(&wl->pspoll_work);
1460 flush_delayed_work(&wl->elp_work);
1461 }
1462 return 0;
1463}
1464
1465static int wl1271_op_resume(struct ieee80211_hw *hw)
1466{
1467 struct wl1271 *wl = hw->priv;
1468 wl1271_debug(DEBUG_MAC80211, "mac80211 resume wow=%d",
1469 wl->wow_enabled);
1470
1471 /*
1472 * re-enable irq_work enqueuing, and call irq_work directly if
1473 * there is a pending work.
1474 */
1475 if (wl->wow_enabled) {
1476 struct wl1271 *wl = hw->priv;
1477 unsigned long flags;
1478 bool run_irq_work = false;
1479
1480 spin_lock_irqsave(&wl->wl_lock, flags);
1481 clear_bit(WL1271_FLAG_SUSPENDED, &wl->flags);
1482 if (test_and_clear_bit(WL1271_FLAG_PENDING_WORK, &wl->flags))
1483 run_irq_work = true;
1484 spin_unlock_irqrestore(&wl->wl_lock, flags);
1485
1486 if (run_irq_work) {
1487 wl1271_debug(DEBUG_MAC80211,
1488 "run postponed irq_work directly");
1489 wl1271_irq(0, wl);
1490 wl1271_enable_interrupts(wl);
1491 }
1492
1493 wl1271_configure_resume(wl);
1494 }
1495
1496 return 0;
1497}
1498#endif
1499
1500static int wl1271_op_start(struct ieee80211_hw *hw)
1501{
1502 wl1271_debug(DEBUG_MAC80211, "mac80211 start");
1503
1504 /*
1505 * We have to delay the booting of the hardware because
1506 * we need to know the local MAC address before downloading and
1507 * initializing the firmware. The MAC address cannot be changed
1508 * after boot, and without the proper MAC address, the firmware
1509 * will not function properly.
1510 *
1511 * The MAC address is first known when the corresponding interface
1512 * is added. That is where we will initialize the hardware.
1513 *
1514 * In addition, we currently have different firmwares for AP and managed
1515 * operation. We will know which to boot according to interface type.
1516 */
1517
1518 return 0;
1519}
1520
1521static void wl1271_op_stop(struct ieee80211_hw *hw)
1522{
1523 wl1271_debug(DEBUG_MAC80211, "mac80211 stop");
1524}
1525
1526static int wl1271_op_add_interface(struct ieee80211_hw *hw,
1527 struct ieee80211_vif *vif)
1528{
1529 struct wl1271 *wl = hw->priv;
1530 struct wiphy *wiphy = hw->wiphy;
1531 int retries = WL1271_BOOT_RETRIES;
1532 int ret = 0;
1533 bool booted = false;
1534
1535 wl1271_debug(DEBUG_MAC80211, "mac80211 add interface type %d mac %pM",
1536 vif->type, vif->addr);
1537
1538 mutex_lock(&wl->mutex);
1539 if (wl->vif) {
1540 wl1271_debug(DEBUG_MAC80211,
1541 "multiple vifs are not supported yet");
1542 ret = -EBUSY;
1543 goto out;
1544 }
1545
1546 /*
1547 * in some very corner case HW recovery scenarios its possible to
1548 * get here before __wl1271_op_remove_interface is complete, so
1549 * opt out if that is the case.
1550 */
1551 if (test_bit(WL1271_FLAG_IF_INITIALIZED, &wl->flags)) {
1552 ret = -EBUSY;
1553 goto out;
1554 }
1555
1556 switch (vif->type) {
1557 case NL80211_IFTYPE_STATION:
1558 wl->bss_type = BSS_TYPE_STA_BSS;
1559 wl->set_bss_type = BSS_TYPE_STA_BSS;
1560 break;
1561 case NL80211_IFTYPE_ADHOC:
1562 wl->bss_type = BSS_TYPE_IBSS;
1563 wl->set_bss_type = BSS_TYPE_STA_BSS;
1564 break;
1565 case NL80211_IFTYPE_AP:
1566 wl->bss_type = BSS_TYPE_AP_BSS;
1567 break;
1568 default:
1569 ret = -EOPNOTSUPP;
1570 goto out;
1571 }
1572
1573 memcpy(wl->mac_addr, vif->addr, ETH_ALEN);
1574
1575 if (wl->state != WL1271_STATE_OFF) {
1576 wl1271_error("cannot start because not in off state: %d",
1577 wl->state);
1578 ret = -EBUSY;
1579 goto out;
1580 }
1581
1582 while (retries) {
1583 retries--;
1584 ret = wl1271_chip_wakeup(wl);
1585 if (ret < 0)
1586 goto power_off;
1587
1588 ret = wl1271_boot(wl);
1589 if (ret < 0)
1590 goto power_off;
1591
1592 ret = wl1271_hw_init(wl);
1593 if (ret < 0)
1594 goto irq_disable;
1595
1596 booted = true;
1597 break;
1598
1599irq_disable:
1600 mutex_unlock(&wl->mutex);
1601 /* Unlocking the mutex in the middle of handling is
1602 inherently unsafe. In this case we deem it safe to do,
1603 because we need to let any possibly pending IRQ out of
1604 the system (and while we are WL1271_STATE_OFF the IRQ
1605 work function will not do anything.) Also, any other
1606 possible concurrent operations will fail due to the
1607 current state, hence the wl1271 struct should be safe. */
1608 wl1271_disable_interrupts(wl);
1609 wl1271_flush_deferred_work(wl);
1610 cancel_work_sync(&wl->netstack_work);
1611 mutex_lock(&wl->mutex);
1612power_off:
1613 wl1271_power_off(wl);
1614 }
1615
1616 if (!booted) {
1617 wl1271_error("firmware boot failed despite %d retries",
1618 WL1271_BOOT_RETRIES);
1619 goto out;
1620 }
1621
1622 wl->vif = vif;
1623 wl->state = WL1271_STATE_ON;
1624 set_bit(WL1271_FLAG_IF_INITIALIZED, &wl->flags);
1625 wl1271_info("firmware booted (%s)", wl->chip.fw_ver_str);
1626
1627 /* update hw/fw version info in wiphy struct */
1628 wiphy->hw_version = wl->chip.id;
1629 strncpy(wiphy->fw_version, wl->chip.fw_ver_str,
1630 sizeof(wiphy->fw_version));
1631
1632 /* Check if any quirks are needed with older fw versions */
1633 wl->quirks |= wl1271_get_fw_ver_quirks(wl);
1634
1635 /*
1636 * Now we know if 11a is supported (info from the NVS), so disable
1637 * 11a channels if not supported
1638 */
1639 if (!wl->enable_11a)
1640 wiphy->bands[IEEE80211_BAND_5GHZ]->n_channels = 0;
1641
1642 wl1271_debug(DEBUG_MAC80211, "11a is %ssupported",
1643 wl->enable_11a ? "" : "not ");
1644
1645out:
1646 mutex_unlock(&wl->mutex);
1647
1648 mutex_lock(&wl_list_mutex);
1649 if (!ret)
1650 list_add(&wl->list, &wl_list);
1651 mutex_unlock(&wl_list_mutex);
1652
1653 return ret;
1654}
1655
1656static void __wl1271_op_remove_interface(struct wl1271 *wl,
1657 bool reset_tx_queues)
1658{
1659 int i;
1660
1661 wl1271_debug(DEBUG_MAC80211, "mac80211 remove interface");
1662
1663 /* because of hardware recovery, we may get here twice */
1664 if (wl->state != WL1271_STATE_ON)
1665 return;
1666
1667 wl1271_info("down");
1668
1669 mutex_lock(&wl_list_mutex);
1670 list_del(&wl->list);
1671 mutex_unlock(&wl_list_mutex);
1672
1673 /* enable dyn ps just in case (if left on due to fw crash etc) */
1674 if (wl->bss_type == BSS_TYPE_STA_BSS)
1675 ieee80211_enable_dyn_ps(wl->vif);
1676
1677 if (wl->scan.state != WL1271_SCAN_STATE_IDLE) {
1678 wl->scan.state = WL1271_SCAN_STATE_IDLE;
1679 memset(wl->scan.scanned_ch, 0, sizeof(wl->scan.scanned_ch));
1680 wl->scan.req = NULL;
1681 ieee80211_scan_completed(wl->hw, true);
1682 }
1683
1684 /*
1685 * this must be before the cancel_work calls below, so that the work
1686 * functions don't perform further work.
1687 */
1688 wl->state = WL1271_STATE_OFF;
1689
1690 mutex_unlock(&wl->mutex);
1691
1692 wl1271_disable_interrupts(wl);
1693 wl1271_flush_deferred_work(wl);
1694 cancel_delayed_work_sync(&wl->scan_complete_work);
1695 cancel_work_sync(&wl->netstack_work);
1696 cancel_work_sync(&wl->tx_work);
1697 cancel_delayed_work_sync(&wl->pspoll_work);
1698 cancel_delayed_work_sync(&wl->elp_work);
1699
1700 mutex_lock(&wl->mutex);
1701
1702 /* let's notify MAC80211 about the remaining pending TX frames */
1703 wl1271_tx_reset(wl, reset_tx_queues);
1704 wl1271_power_off(wl);
1705
1706 memset(wl->bssid, 0, ETH_ALEN);
1707 memset(wl->ssid, 0, IW_ESSID_MAX_SIZE + 1);
1708 wl->ssid_len = 0;
1709 wl->bss_type = MAX_BSS_TYPE;
1710 wl->set_bss_type = MAX_BSS_TYPE;
1711 wl->band = IEEE80211_BAND_2GHZ;
1712
1713 wl->rx_counter = 0;
1714 wl->psm_entry_retry = 0;
1715 wl->power_level = WL1271_DEFAULT_POWER_LEVEL;
1716 wl->tx_blocks_available = 0;
1717 wl->tx_allocated_blocks = 0;
1718 wl->tx_results_count = 0;
1719 wl->tx_packets_count = 0;
1720 wl->tx_security_last_seq = 0;
1721 wl->tx_security_seq = 0;
1722 wl->time_offset = 0;
1723 wl->session_counter = 0;
1724 wl->rate_set = CONF_TX_RATE_MASK_BASIC;
1725 wl->vif = NULL;
1726 wl->filters = 0;
1727 wl1271_free_ap_keys(wl);
1728 memset(wl->ap_hlid_map, 0, sizeof(wl->ap_hlid_map));
1729 wl->ap_fw_ps_map = 0;
1730 wl->ap_ps_map = 0;
1731 wl->sched_scanning = false;
1732
1733 /*
1734 * this is performed after the cancel_work calls and the associated
1735 * mutex_lock, so that wl1271_op_add_interface does not accidentally
1736 * get executed before all these vars have been reset.
1737 */
1738 wl->flags = 0;
1739
1740 for (i = 0; i < NUM_TX_QUEUES; i++)
1741 wl->tx_blocks_freed[i] = 0;
1742
1743 wl1271_debugfs_reset(wl);
1744
1745 kfree(wl->fw_status);
1746 wl->fw_status = NULL;
1747 kfree(wl->tx_res_if);
1748 wl->tx_res_if = NULL;
1749 kfree(wl->target_mem_map);
1750 wl->target_mem_map = NULL;
1751}
1752
1753static void wl1271_op_remove_interface(struct ieee80211_hw *hw,
1754 struct ieee80211_vif *vif)
1755{
1756 struct wl1271 *wl = hw->priv;
1757
1758 mutex_lock(&wl->mutex);
1759 /*
1760 * wl->vif can be null here if someone shuts down the interface
1761 * just when hardware recovery has been started.
1762 */
1763 if (wl->vif) {
1764 WARN_ON(wl->vif != vif);
1765 __wl1271_op_remove_interface(wl, true);
1766 }
1767
1768 mutex_unlock(&wl->mutex);
1769 cancel_work_sync(&wl->recovery_work);
1770}
1771
1772void wl1271_configure_filters(struct wl1271 *wl, unsigned int filters)
1773{
1774 wl1271_set_default_filters(wl);
1775
1776 /* combine requested filters with current filter config */
1777 filters = wl->filters | filters;
1778
1779 wl1271_debug(DEBUG_FILTERS, "RX filters set: ");
1780
1781 if (filters & FIF_PROMISC_IN_BSS) {
1782 wl1271_debug(DEBUG_FILTERS, " - FIF_PROMISC_IN_BSS");
1783 wl->rx_config &= ~CFG_UNI_FILTER_EN;
1784 wl->rx_config |= CFG_BSSID_FILTER_EN;
1785 }
1786 if (filters & FIF_BCN_PRBRESP_PROMISC) {
1787 wl1271_debug(DEBUG_FILTERS, " - FIF_BCN_PRBRESP_PROMISC");
1788 wl->rx_config &= ~CFG_BSSID_FILTER_EN;
1789 wl->rx_config &= ~CFG_SSID_FILTER_EN;
1790 }
1791 if (filters & FIF_OTHER_BSS) {
1792 wl1271_debug(DEBUG_FILTERS, " - FIF_OTHER_BSS");
1793 wl->rx_config &= ~CFG_BSSID_FILTER_EN;
1794 }
1795 if (filters & FIF_CONTROL) {
1796 wl1271_debug(DEBUG_FILTERS, " - FIF_CONTROL");
1797 wl->rx_filter |= CFG_RX_CTL_EN;
1798 }
1799 if (filters & FIF_FCSFAIL) {
1800 wl1271_debug(DEBUG_FILTERS, " - FIF_FCSFAIL");
1801 wl->rx_filter |= CFG_RX_FCS_ERROR;
1802 }
1803}
1804
1805static int wl1271_dummy_join(struct wl1271 *wl)
1806{
1807 int ret = 0;
1808 /* we need to use a dummy BSSID for now */
1809 static const u8 dummy_bssid[ETH_ALEN] = { 0x0b, 0xad, 0xde,
1810 0xad, 0xbe, 0xef };
1811
1812 memcpy(wl->bssid, dummy_bssid, ETH_ALEN);
1813
1814 /* pass through frames from all BSS */
1815 wl1271_configure_filters(wl, FIF_OTHER_BSS);
1816
1817 ret = wl1271_cmd_join(wl, wl->set_bss_type);
1818 if (ret < 0)
1819 goto out;
1820
1821 set_bit(WL1271_FLAG_JOINED, &wl->flags);
1822
1823out:
1824 return ret;
1825}
1826
1827static int wl1271_join(struct wl1271 *wl, bool set_assoc)
1828{
1829 int ret;
1830
1831 /*
1832 * One of the side effects of the JOIN command is that is clears
1833 * WPA/WPA2 keys from the chipset. Performing a JOIN while associated
1834 * to a WPA/WPA2 access point will therefore kill the data-path.
1835 * Currently the only valid scenario for JOIN during association
1836 * is on roaming, in which case we will also be given new keys.
1837 * Keep the below message for now, unless it starts bothering
1838 * users who really like to roam a lot :)
1839 */
1840 if (test_bit(WL1271_FLAG_STA_ASSOCIATED, &wl->flags))
1841 wl1271_info("JOIN while associated.");
1842
1843 if (set_assoc)
1844 set_bit(WL1271_FLAG_STA_ASSOCIATED, &wl->flags);
1845
1846 ret = wl1271_cmd_join(wl, wl->set_bss_type);
1847 if (ret < 0)
1848 goto out;
1849
1850 set_bit(WL1271_FLAG_JOINED, &wl->flags);
1851
1852 if (!test_bit(WL1271_FLAG_STA_ASSOCIATED, &wl->flags))
1853 goto out;
1854
1855 /*
1856 * The join command disable the keep-alive mode, shut down its process,
1857 * and also clear the template config, so we need to reset it all after
1858 * the join. The acx_aid starts the keep-alive process, and the order
1859 * of the commands below is relevant.
1860 */
1861 ret = wl1271_acx_keep_alive_mode(wl, true);
1862 if (ret < 0)
1863 goto out;
1864
1865 ret = wl1271_acx_aid(wl, wl->aid);
1866 if (ret < 0)
1867 goto out;
1868
1869 ret = wl1271_cmd_build_klv_null_data(wl);
1870 if (ret < 0)
1871 goto out;
1872
1873 ret = wl1271_acx_keep_alive_config(wl, CMD_TEMPL_KLV_IDX_NULL_DATA,
1874 ACX_KEEP_ALIVE_TPL_VALID);
1875 if (ret < 0)
1876 goto out;
1877
1878out:
1879 return ret;
1880}
1881
1882static int wl1271_unjoin(struct wl1271 *wl)
1883{
1884 int ret;
1885
1886 /* to stop listening to a channel, we disconnect */
1887 ret = wl1271_cmd_disconnect(wl);
1888 if (ret < 0)
1889 goto out;
1890
1891 clear_bit(WL1271_FLAG_JOINED, &wl->flags);
1892 memset(wl->bssid, 0, ETH_ALEN);
1893
1894 /* stop filtering packets based on bssid */
1895 wl1271_configure_filters(wl, FIF_OTHER_BSS);
1896
1897out:
1898 return ret;
1899}
1900
1901static void wl1271_set_band_rate(struct wl1271 *wl)
1902{
1903 if (wl->band == IEEE80211_BAND_2GHZ)
1904 wl->basic_rate_set = wl->conf.tx.basic_rate;
1905 else
1906 wl->basic_rate_set = wl->conf.tx.basic_rate_5;
1907}
1908
1909static int wl1271_sta_handle_idle(struct wl1271 *wl, bool idle)
1910{
1911 int ret;
1912
1913 if (idle) {
1914 if (test_bit(WL1271_FLAG_JOINED, &wl->flags)) {
1915 ret = wl1271_unjoin(wl);
1916 if (ret < 0)
1917 goto out;
1918 }
1919 wl->rate_set = wl1271_tx_min_rate_get(wl);
1920 ret = wl1271_acx_sta_rate_policies(wl);
1921 if (ret < 0)
1922 goto out;
1923 ret = wl1271_acx_keep_alive_config(
1924 wl, CMD_TEMPL_KLV_IDX_NULL_DATA,
1925 ACX_KEEP_ALIVE_TPL_INVALID);
1926 if (ret < 0)
1927 goto out;
1928 set_bit(WL1271_FLAG_IDLE, &wl->flags);
1929 } else {
1930 /* increment the session counter */
1931 wl->session_counter++;
1932 if (wl->session_counter >= SESSION_COUNTER_MAX)
1933 wl->session_counter = 0;
1934
1935 /* The current firmware only supports sched_scan in idle */
1936 if (wl->sched_scanning) {
1937 wl1271_scan_sched_scan_stop(wl);
1938 ieee80211_sched_scan_stopped(wl->hw);
1939 }
1940
1941 ret = wl1271_dummy_join(wl);
1942 if (ret < 0)
1943 goto out;
1944 clear_bit(WL1271_FLAG_IDLE, &wl->flags);
1945 }
1946
1947out:
1948 return ret;
1949}
1950
1951static int wl1271_op_config(struct ieee80211_hw *hw, u32 changed)
1952{
1953 struct wl1271 *wl = hw->priv;
1954 struct ieee80211_conf *conf = &hw->conf;
1955 int channel, ret = 0;
1956 bool is_ap;
1957
1958 channel = ieee80211_frequency_to_channel(conf->channel->center_freq);
1959
1960 wl1271_debug(DEBUG_MAC80211, "mac80211 config ch %d psm %s power %d %s"
1961 " changed 0x%x",
1962 channel,
1963 conf->flags & IEEE80211_CONF_PS ? "on" : "off",
1964 conf->power_level,
1965 conf->flags & IEEE80211_CONF_IDLE ? "idle" : "in use",
1966 changed);
1967
1968 /*
1969 * mac80211 will go to idle nearly immediately after transmitting some
1970 * frames, such as the deauth. To make sure those frames reach the air,
1971 * wait here until the TX queue is fully flushed.
1972 */
1973 if ((changed & IEEE80211_CONF_CHANGE_IDLE) &&
1974 (conf->flags & IEEE80211_CONF_IDLE))
1975 wl1271_tx_flush(wl);
1976
1977 mutex_lock(&wl->mutex);
1978
1979 if (unlikely(wl->state == WL1271_STATE_OFF)) {
1980 /* we support configuring the channel and band while off */
1981 if ((changed & IEEE80211_CONF_CHANGE_CHANNEL)) {
1982 wl->band = conf->channel->band;
1983 wl->channel = channel;
1984 }
1985
1986 goto out;
1987 }
1988
1989 is_ap = (wl->bss_type == BSS_TYPE_AP_BSS);
1990
1991 ret = wl1271_ps_elp_wakeup(wl);
1992 if (ret < 0)
1993 goto out;
1994
1995 /* if the channel changes while joined, join again */
1996 if (changed & IEEE80211_CONF_CHANGE_CHANNEL &&
1997 ((wl->band != conf->channel->band) ||
1998 (wl->channel != channel))) {
1999 wl->band = conf->channel->band;
2000 wl->channel = channel;
2001
2002 if (!is_ap) {
2003 /*
2004 * FIXME: the mac80211 should really provide a fixed
2005 * rate to use here. for now, just use the smallest
2006 * possible rate for the band as a fixed rate for
2007 * association frames and other control messages.
2008 */
2009 if (!test_bit(WL1271_FLAG_STA_ASSOCIATED, &wl->flags))
2010 wl1271_set_band_rate(wl);
2011
2012 wl->basic_rate = wl1271_tx_min_rate_get(wl);
2013 ret = wl1271_acx_sta_rate_policies(wl);
2014 if (ret < 0)
2015 wl1271_warning("rate policy for channel "
2016 "failed %d", ret);
2017
2018 if (test_bit(WL1271_FLAG_JOINED, &wl->flags)) {
2019 ret = wl1271_join(wl, false);
2020 if (ret < 0)
2021 wl1271_warning("cmd join on channel "
2022 "failed %d", ret);
2023 }
2024 }
2025 }
2026
2027 if (changed & IEEE80211_CONF_CHANGE_IDLE && !is_ap) {
2028 ret = wl1271_sta_handle_idle(wl,
2029 conf->flags & IEEE80211_CONF_IDLE);
2030 if (ret < 0)
2031 wl1271_warning("idle mode change failed %d", ret);
2032 }
2033
2034 /*
2035 * if mac80211 changes the PSM mode, make sure the mode is not
2036 * incorrectly changed after the pspoll failure active window.
2037 */
2038 if (changed & IEEE80211_CONF_CHANGE_PS)
2039 clear_bit(WL1271_FLAG_PSPOLL_FAILURE, &wl->flags);
2040
2041 if (conf->flags & IEEE80211_CONF_PS &&
2042 !test_bit(WL1271_FLAG_PSM_REQUESTED, &wl->flags)) {
2043 set_bit(WL1271_FLAG_PSM_REQUESTED, &wl->flags);
2044
2045 /*
2046 * We enter PSM only if we're already associated.
2047 * If we're not, we'll enter it when joining an SSID,
2048 * through the bss_info_changed() hook.
2049 */
2050 if (test_bit(WL1271_FLAG_STA_ASSOCIATED, &wl->flags)) {
2051 wl1271_debug(DEBUG_PSM, "psm enabled");
2052 ret = wl1271_ps_set_mode(wl, STATION_POWER_SAVE_MODE,
2053 wl->basic_rate, true);
2054 }
2055 } else if (!(conf->flags & IEEE80211_CONF_PS) &&
2056 test_bit(WL1271_FLAG_PSM_REQUESTED, &wl->flags)) {
2057 wl1271_debug(DEBUG_PSM, "psm disabled");
2058
2059 clear_bit(WL1271_FLAG_PSM_REQUESTED, &wl->flags);
2060
2061 if (test_bit(WL1271_FLAG_PSM, &wl->flags))
2062 ret = wl1271_ps_set_mode(wl, STATION_ACTIVE_MODE,
2063 wl->basic_rate, true);
2064 }
2065
2066 if (conf->power_level != wl->power_level) {
2067 ret = wl1271_acx_tx_power(wl, conf->power_level);
2068 if (ret < 0)
2069 goto out_sleep;
2070
2071 wl->power_level = conf->power_level;
2072 }
2073
2074out_sleep:
2075 wl1271_ps_elp_sleep(wl);
2076
2077out:
2078 mutex_unlock(&wl->mutex);
2079
2080 return ret;
2081}
2082
2083struct wl1271_filter_params {
2084 bool enabled;
2085 int mc_list_length;
2086 u8 mc_list[ACX_MC_ADDRESS_GROUP_MAX][ETH_ALEN];
2087};
2088
2089static u64 wl1271_op_prepare_multicast(struct ieee80211_hw *hw,
2090 struct netdev_hw_addr_list *mc_list)
2091{
2092 struct wl1271_filter_params *fp;
2093 struct netdev_hw_addr *ha;
2094 struct wl1271 *wl = hw->priv;
2095
2096 if (unlikely(wl->state == WL1271_STATE_OFF))
2097 return 0;
2098
2099 fp = kzalloc(sizeof(*fp), GFP_ATOMIC);
2100 if (!fp) {
2101 wl1271_error("Out of memory setting filters.");
2102 return 0;
2103 }
2104
2105 /* update multicast filtering parameters */
2106 fp->mc_list_length = 0;
2107 if (netdev_hw_addr_list_count(mc_list) > ACX_MC_ADDRESS_GROUP_MAX) {
2108 fp->enabled = false;
2109 } else {
2110 fp->enabled = true;
2111 netdev_hw_addr_list_for_each(ha, mc_list) {
2112 memcpy(fp->mc_list[fp->mc_list_length],
2113 ha->addr, ETH_ALEN);
2114 fp->mc_list_length++;
2115 }
2116 }
2117
2118 return (u64)(unsigned long)fp;
2119}
2120
2121#define WL1271_SUPPORTED_FILTERS (FIF_PROMISC_IN_BSS | \
2122 FIF_ALLMULTI | \
2123 FIF_FCSFAIL | \
2124 FIF_BCN_PRBRESP_PROMISC | \
2125 FIF_CONTROL | \
2126 FIF_OTHER_BSS)
2127
2128static void wl1271_op_configure_filter(struct ieee80211_hw *hw,
2129 unsigned int changed,
2130 unsigned int *total, u64 multicast)
2131{
2132 struct wl1271_filter_params *fp = (void *)(unsigned long)multicast;
2133 struct wl1271 *wl = hw->priv;
2134 int ret;
2135
2136 wl1271_debug(DEBUG_MAC80211, "mac80211 configure filter changed %x"
2137 " total %x", changed, *total);
2138
2139 mutex_lock(&wl->mutex);
2140
2141 *total &= WL1271_SUPPORTED_FILTERS;
2142 changed &= WL1271_SUPPORTED_FILTERS;
2143
2144 if (unlikely(wl->state == WL1271_STATE_OFF))
2145 goto out;
2146
2147 ret = wl1271_ps_elp_wakeup(wl);
2148 if (ret < 0)
2149 goto out;
2150
2151 if (wl->bss_type != BSS_TYPE_AP_BSS) {
2152 if (*total & FIF_ALLMULTI)
2153 ret = wl1271_acx_group_address_tbl(wl, false, NULL, 0);
2154 else if (fp)
2155 ret = wl1271_acx_group_address_tbl(wl, fp->enabled,
2156 fp->mc_list,
2157 fp->mc_list_length);
2158 if (ret < 0)
2159 goto out_sleep;
2160 }
2161
2162 /* determine, whether supported filter values have changed */
2163 if (changed == 0)
2164 goto out_sleep;
2165
2166 /* configure filters */
2167 wl->filters = *total;
2168 wl1271_configure_filters(wl, 0);
2169
2170 /* apply configured filters */
2171 ret = wl1271_acx_rx_config(wl, wl->rx_config, wl->rx_filter);
2172 if (ret < 0)
2173 goto out_sleep;
2174
2175out_sleep:
2176 wl1271_ps_elp_sleep(wl);
2177
2178out:
2179 mutex_unlock(&wl->mutex);
2180 kfree(fp);
2181}
2182
2183static int wl1271_record_ap_key(struct wl1271 *wl, u8 id, u8 key_type,
2184 u8 key_size, const u8 *key, u8 hlid, u32 tx_seq_32,
2185 u16 tx_seq_16)
2186{
2187 struct wl1271_ap_key *ap_key;
2188 int i;
2189
2190 wl1271_debug(DEBUG_CRYPT, "record ap key id %d", (int)id);
2191
2192 if (key_size > MAX_KEY_SIZE)
2193 return -EINVAL;
2194
2195 /*
2196 * Find next free entry in ap_keys. Also check we are not replacing
2197 * an existing key.
2198 */
2199 for (i = 0; i < MAX_NUM_KEYS; i++) {
2200 if (wl->recorded_ap_keys[i] == NULL)
2201 break;
2202
2203 if (wl->recorded_ap_keys[i]->id == id) {
2204 wl1271_warning("trying to record key replacement");
2205 return -EINVAL;
2206 }
2207 }
2208
2209 if (i == MAX_NUM_KEYS)
2210 return -EBUSY;
2211
2212 ap_key = kzalloc(sizeof(*ap_key), GFP_KERNEL);
2213 if (!ap_key)
2214 return -ENOMEM;
2215
2216 ap_key->id = id;
2217 ap_key->key_type = key_type;
2218 ap_key->key_size = key_size;
2219 memcpy(ap_key->key, key, key_size);
2220 ap_key->hlid = hlid;
2221 ap_key->tx_seq_32 = tx_seq_32;
2222 ap_key->tx_seq_16 = tx_seq_16;
2223
2224 wl->recorded_ap_keys[i] = ap_key;
2225 return 0;
2226}
2227
2228static void wl1271_free_ap_keys(struct wl1271 *wl)
2229{
2230 int i;
2231
2232 for (i = 0; i < MAX_NUM_KEYS; i++) {
2233 kfree(wl->recorded_ap_keys[i]);
2234 wl->recorded_ap_keys[i] = NULL;
2235 }
2236}
2237
2238static int wl1271_ap_init_hwenc(struct wl1271 *wl)
2239{
2240 int i, ret = 0;
2241 struct wl1271_ap_key *key;
2242 bool wep_key_added = false;
2243
2244 for (i = 0; i < MAX_NUM_KEYS; i++) {
2245 if (wl->recorded_ap_keys[i] == NULL)
2246 break;
2247
2248 key = wl->recorded_ap_keys[i];
2249 ret = wl1271_cmd_set_ap_key(wl, KEY_ADD_OR_REPLACE,
2250 key->id, key->key_type,
2251 key->key_size, key->key,
2252 key->hlid, key->tx_seq_32,
2253 key->tx_seq_16);
2254 if (ret < 0)
2255 goto out;
2256
2257 if (key->key_type == KEY_WEP)
2258 wep_key_added = true;
2259 }
2260
2261 if (wep_key_added) {
2262 ret = wl1271_cmd_set_ap_default_wep_key(wl, wl->default_key);
2263 if (ret < 0)
2264 goto out;
2265 }
2266
2267out:
2268 wl1271_free_ap_keys(wl);
2269 return ret;
2270}
2271
2272static int wl1271_set_key(struct wl1271 *wl, u16 action, u8 id, u8 key_type,
2273 u8 key_size, const u8 *key, u32 tx_seq_32,
2274 u16 tx_seq_16, struct ieee80211_sta *sta)
2275{
2276 int ret;
2277 bool is_ap = (wl->bss_type == BSS_TYPE_AP_BSS);
2278
2279 if (is_ap) {
2280 struct wl1271_station *wl_sta;
2281 u8 hlid;
2282
2283 if (sta) {
2284 wl_sta = (struct wl1271_station *)sta->drv_priv;
2285 hlid = wl_sta->hlid;
2286 } else {
2287 hlid = WL1271_AP_BROADCAST_HLID;
2288 }
2289
2290 if (!test_bit(WL1271_FLAG_AP_STARTED, &wl->flags)) {
2291 /*
2292 * We do not support removing keys after AP shutdown.
2293 * Pretend we do to make mac80211 happy.
2294 */
2295 if (action != KEY_ADD_OR_REPLACE)
2296 return 0;
2297
2298 ret = wl1271_record_ap_key(wl, id,
2299 key_type, key_size,
2300 key, hlid, tx_seq_32,
2301 tx_seq_16);
2302 } else {
2303 ret = wl1271_cmd_set_ap_key(wl, action,
2304 id, key_type, key_size,
2305 key, hlid, tx_seq_32,
2306 tx_seq_16);
2307 }
2308
2309 if (ret < 0)
2310 return ret;
2311 } else {
2312 const u8 *addr;
2313 static const u8 bcast_addr[ETH_ALEN] = {
2314 0xff, 0xff, 0xff, 0xff, 0xff, 0xff
2315 };
2316
2317 addr = sta ? sta->addr : bcast_addr;
2318
2319 if (is_zero_ether_addr(addr)) {
2320 /* We dont support TX only encryption */
2321 return -EOPNOTSUPP;
2322 }
2323
2324 /* The wl1271 does not allow to remove unicast keys - they
2325 will be cleared automatically on next CMD_JOIN. Ignore the
2326 request silently, as we dont want the mac80211 to emit
2327 an error message. */
2328 if (action == KEY_REMOVE && !is_broadcast_ether_addr(addr))
2329 return 0;
2330
2331 ret = wl1271_cmd_set_sta_key(wl, action,
2332 id, key_type, key_size,
2333 key, addr, tx_seq_32,
2334 tx_seq_16);
2335 if (ret < 0)
2336 return ret;
2337
2338 /* the default WEP key needs to be configured at least once */
2339 if (key_type == KEY_WEP) {
2340 ret = wl1271_cmd_set_sta_default_wep_key(wl,
2341 wl->default_key);
2342 if (ret < 0)
2343 return ret;
2344 }
2345 }
2346
2347 return 0;
2348}
2349
2350static int wl1271_op_set_key(struct ieee80211_hw *hw, enum set_key_cmd cmd,
2351 struct ieee80211_vif *vif,
2352 struct ieee80211_sta *sta,
2353 struct ieee80211_key_conf *key_conf)
2354{
2355 struct wl1271 *wl = hw->priv;
2356 int ret;
2357 u32 tx_seq_32 = 0;
2358 u16 tx_seq_16 = 0;
2359 u8 key_type;
2360
2361 wl1271_debug(DEBUG_MAC80211, "mac80211 set key");
2362
2363 wl1271_debug(DEBUG_CRYPT, "CMD: 0x%x sta: %p", cmd, sta);
2364 wl1271_debug(DEBUG_CRYPT, "Key: algo:0x%x, id:%d, len:%d flags 0x%x",
2365 key_conf->cipher, key_conf->keyidx,
2366 key_conf->keylen, key_conf->flags);
2367 wl1271_dump(DEBUG_CRYPT, "KEY: ", key_conf->key, key_conf->keylen);
2368
2369 mutex_lock(&wl->mutex);
2370
2371 if (unlikely(wl->state == WL1271_STATE_OFF)) {
2372 ret = -EAGAIN;
2373 goto out_unlock;
2374 }
2375
2376 ret = wl1271_ps_elp_wakeup(wl);
2377 if (ret < 0)
2378 goto out_unlock;
2379
2380 switch (key_conf->cipher) {
2381 case WLAN_CIPHER_SUITE_WEP40:
2382 case WLAN_CIPHER_SUITE_WEP104:
2383 key_type = KEY_WEP;
2384
2385 key_conf->hw_key_idx = key_conf->keyidx;
2386 break;
2387 case WLAN_CIPHER_SUITE_TKIP:
2388 key_type = KEY_TKIP;
2389
2390 key_conf->hw_key_idx = key_conf->keyidx;
2391 tx_seq_32 = WL1271_TX_SECURITY_HI32(wl->tx_security_seq);
2392 tx_seq_16 = WL1271_TX_SECURITY_LO16(wl->tx_security_seq);
2393 break;
2394 case WLAN_CIPHER_SUITE_CCMP:
2395 key_type = KEY_AES;
2396
2397 key_conf->flags |= IEEE80211_KEY_FLAG_GENERATE_IV;
2398 tx_seq_32 = WL1271_TX_SECURITY_HI32(wl->tx_security_seq);
2399 tx_seq_16 = WL1271_TX_SECURITY_LO16(wl->tx_security_seq);
2400 break;
2401 case WL1271_CIPHER_SUITE_GEM:
2402 key_type = KEY_GEM;
2403 tx_seq_32 = WL1271_TX_SECURITY_HI32(wl->tx_security_seq);
2404 tx_seq_16 = WL1271_TX_SECURITY_LO16(wl->tx_security_seq);
2405 break;
2406 default:
2407 wl1271_error("Unknown key algo 0x%x", key_conf->cipher);
2408
2409 ret = -EOPNOTSUPP;
2410 goto out_sleep;
2411 }
2412
2413 switch (cmd) {
2414 case SET_KEY:
2415 ret = wl1271_set_key(wl, KEY_ADD_OR_REPLACE,
2416 key_conf->keyidx, key_type,
2417 key_conf->keylen, key_conf->key,
2418 tx_seq_32, tx_seq_16, sta);
2419 if (ret < 0) {
2420 wl1271_error("Could not add or replace key");
2421 goto out_sleep;
2422 }
2423 break;
2424
2425 case DISABLE_KEY:
2426 ret = wl1271_set_key(wl, KEY_REMOVE,
2427 key_conf->keyidx, key_type,
2428 key_conf->keylen, key_conf->key,
2429 0, 0, sta);
2430 if (ret < 0) {
2431 wl1271_error("Could not remove key");
2432 goto out_sleep;
2433 }
2434 break;
2435
2436 default:
2437 wl1271_error("Unsupported key cmd 0x%x", cmd);
2438 ret = -EOPNOTSUPP;
2439 break;
2440 }
2441
2442out_sleep:
2443 wl1271_ps_elp_sleep(wl);
2444
2445out_unlock:
2446 mutex_unlock(&wl->mutex);
2447
2448 return ret;
2449}
2450
2451static int wl1271_op_hw_scan(struct ieee80211_hw *hw,
2452 struct ieee80211_vif *vif,
2453 struct cfg80211_scan_request *req)
2454{
2455 struct wl1271 *wl = hw->priv;
2456 int ret;
2457 u8 *ssid = NULL;
2458 size_t len = 0;
2459
2460 wl1271_debug(DEBUG_MAC80211, "mac80211 hw scan");
2461
2462 if (req->n_ssids) {
2463 ssid = req->ssids[0].ssid;
2464 len = req->ssids[0].ssid_len;
2465 }
2466
2467 mutex_lock(&wl->mutex);
2468
2469 if (wl->state == WL1271_STATE_OFF) {
2470 /*
2471 * We cannot return -EBUSY here because cfg80211 will expect
2472 * a call to ieee80211_scan_completed if we do - in this case
2473 * there won't be any call.
2474 */
2475 ret = -EAGAIN;
2476 goto out;
2477 }
2478
2479 ret = wl1271_ps_elp_wakeup(wl);
2480 if (ret < 0)
2481 goto out;
2482
2483 ret = wl1271_scan(hw->priv, ssid, len, req);
2484
2485 wl1271_ps_elp_sleep(wl);
2486
2487out:
2488 mutex_unlock(&wl->mutex);
2489
2490 return ret;
2491}
2492
2493static int wl1271_op_sched_scan_start(struct ieee80211_hw *hw,
2494 struct ieee80211_vif *vif,
2495 struct cfg80211_sched_scan_request *req,
2496 struct ieee80211_sched_scan_ies *ies)
2497{
2498 struct wl1271 *wl = hw->priv;
2499 int ret;
2500
2501 wl1271_debug(DEBUG_MAC80211, "wl1271_op_sched_scan_start");
2502
2503 mutex_lock(&wl->mutex);
2504
2505 ret = wl1271_ps_elp_wakeup(wl);
2506 if (ret < 0)
2507 goto out;
2508
2509 ret = wl1271_scan_sched_scan_config(wl, req, ies);
2510 if (ret < 0)
2511 goto out_sleep;
2512
2513 ret = wl1271_scan_sched_scan_start(wl);
2514 if (ret < 0)
2515 goto out_sleep;
2516
2517 wl->sched_scanning = true;
2518
2519out_sleep:
2520 wl1271_ps_elp_sleep(wl);
2521out:
2522 mutex_unlock(&wl->mutex);
2523 return ret;
2524}
2525
2526static void wl1271_op_sched_scan_stop(struct ieee80211_hw *hw,
2527 struct ieee80211_vif *vif)
2528{
2529 struct wl1271 *wl = hw->priv;
2530 int ret;
2531
2532 wl1271_debug(DEBUG_MAC80211, "wl1271_op_sched_scan_stop");
2533
2534 mutex_lock(&wl->mutex);
2535
2536 ret = wl1271_ps_elp_wakeup(wl);
2537 if (ret < 0)
2538 goto out;
2539
2540 wl1271_scan_sched_scan_stop(wl);
2541
2542 wl1271_ps_elp_sleep(wl);
2543out:
2544 mutex_unlock(&wl->mutex);
2545}
2546
2547static int wl1271_op_set_frag_threshold(struct ieee80211_hw *hw, u32 value)
2548{
2549 struct wl1271 *wl = hw->priv;
2550 int ret = 0;
2551
2552 mutex_lock(&wl->mutex);
2553
2554 if (unlikely(wl->state == WL1271_STATE_OFF)) {
2555 ret = -EAGAIN;
2556 goto out;
2557 }
2558
2559 ret = wl1271_ps_elp_wakeup(wl);
2560 if (ret < 0)
2561 goto out;
2562
2563 ret = wl1271_acx_frag_threshold(wl, value);
2564 if (ret < 0)
2565 wl1271_warning("wl1271_op_set_frag_threshold failed: %d", ret);
2566
2567 wl1271_ps_elp_sleep(wl);
2568
2569out:
2570 mutex_unlock(&wl->mutex);
2571
2572 return ret;
2573}
2574
2575static int wl1271_op_set_rts_threshold(struct ieee80211_hw *hw, u32 value)
2576{
2577 struct wl1271 *wl = hw->priv;
2578 int ret = 0;
2579
2580 mutex_lock(&wl->mutex);
2581
2582 if (unlikely(wl->state == WL1271_STATE_OFF)) {
2583 ret = -EAGAIN;
2584 goto out;
2585 }
2586
2587 ret = wl1271_ps_elp_wakeup(wl);
2588 if (ret < 0)
2589 goto out;
2590
2591 ret = wl1271_acx_rts_threshold(wl, value);
2592 if (ret < 0)
2593 wl1271_warning("wl1271_op_set_rts_threshold failed: %d", ret);
2594
2595 wl1271_ps_elp_sleep(wl);
2596
2597out:
2598 mutex_unlock(&wl->mutex);
2599
2600 return ret;
2601}
2602
2603static int wl1271_ssid_set(struct wl1271 *wl, struct sk_buff *skb,
2604 int offset)
2605{
2606 u8 ssid_len;
2607 const u8 *ptr = cfg80211_find_ie(WLAN_EID_SSID, skb->data + offset,
2608 skb->len - offset);
2609
2610 if (!ptr) {
2611 wl1271_error("No SSID in IEs!");
2612 return -ENOENT;
2613 }
2614
2615 ssid_len = ptr[1];
2616 if (ssid_len > IEEE80211_MAX_SSID_LEN) {
2617 wl1271_error("SSID is too long!");
2618 return -EINVAL;
2619 }
2620
2621 wl->ssid_len = ssid_len;
2622 memcpy(wl->ssid, ptr+2, ssid_len);
2623 return 0;
2624}
2625
2626static int wl1271_bss_erp_info_changed(struct wl1271 *wl,
2627 struct ieee80211_bss_conf *bss_conf,
2628 u32 changed)
2629{
2630 int ret = 0;
2631
2632 if (changed & BSS_CHANGED_ERP_SLOT) {
2633 if (bss_conf->use_short_slot)
2634 ret = wl1271_acx_slot(wl, SLOT_TIME_SHORT);
2635 else
2636 ret = wl1271_acx_slot(wl, SLOT_TIME_LONG);
2637 if (ret < 0) {
2638 wl1271_warning("Set slot time failed %d", ret);
2639 goto out;
2640 }
2641 }
2642
2643 if (changed & BSS_CHANGED_ERP_PREAMBLE) {
2644 if (bss_conf->use_short_preamble)
2645 wl1271_acx_set_preamble(wl, ACX_PREAMBLE_SHORT);
2646 else
2647 wl1271_acx_set_preamble(wl, ACX_PREAMBLE_LONG);
2648 }
2649
2650 if (changed & BSS_CHANGED_ERP_CTS_PROT) {
2651 if (bss_conf->use_cts_prot)
2652 ret = wl1271_acx_cts_protect(wl, CTSPROTECT_ENABLE);
2653 else
2654 ret = wl1271_acx_cts_protect(wl, CTSPROTECT_DISABLE);
2655 if (ret < 0) {
2656 wl1271_warning("Set ctsprotect failed %d", ret);
2657 goto out;
2658 }
2659 }
2660
2661out:
2662 return ret;
2663}
2664
2665static int wl1271_bss_beacon_info_changed(struct wl1271 *wl,
2666 struct ieee80211_vif *vif,
2667 struct ieee80211_bss_conf *bss_conf,
2668 u32 changed)
2669{
2670 bool is_ap = (wl->bss_type == BSS_TYPE_AP_BSS);
2671 int ret = 0;
2672
2673 if ((changed & BSS_CHANGED_BEACON_INT)) {
2674 wl1271_debug(DEBUG_MASTER, "beacon interval updated: %d",
2675 bss_conf->beacon_int);
2676
2677 wl->beacon_int = bss_conf->beacon_int;
2678 }
2679
2680 if ((changed & BSS_CHANGED_BEACON)) {
2681 struct ieee80211_hdr *hdr;
2682 int ieoffset = offsetof(struct ieee80211_mgmt,
2683 u.beacon.variable);
2684 struct sk_buff *beacon = ieee80211_beacon_get(wl->hw, vif);
2685 u16 tmpl_id;
2686
2687 if (!beacon)
2688 goto out;
2689
2690 wl1271_debug(DEBUG_MASTER, "beacon updated");
2691
2692 ret = wl1271_ssid_set(wl, beacon, ieoffset);
2693 if (ret < 0) {
2694 dev_kfree_skb(beacon);
2695 goto out;
2696 }
2697 tmpl_id = is_ap ? CMD_TEMPL_AP_BEACON :
2698 CMD_TEMPL_BEACON;
2699 ret = wl1271_cmd_template_set(wl, tmpl_id,
2700 beacon->data,
2701 beacon->len, 0,
2702 wl1271_tx_min_rate_get(wl));
2703 if (ret < 0) {
2704 dev_kfree_skb(beacon);
2705 goto out;
2706 }
2707
2708 hdr = (struct ieee80211_hdr *) beacon->data;
2709 hdr->frame_control = cpu_to_le16(IEEE80211_FTYPE_MGMT |
2710 IEEE80211_STYPE_PROBE_RESP);
2711
2712 tmpl_id = is_ap ? CMD_TEMPL_AP_PROBE_RESPONSE :
2713 CMD_TEMPL_PROBE_RESPONSE;
2714 ret = wl1271_cmd_template_set(wl,
2715 tmpl_id,
2716 beacon->data,
2717 beacon->len, 0,
2718 wl1271_tx_min_rate_get(wl));
2719 dev_kfree_skb(beacon);
2720 if (ret < 0)
2721 goto out;
2722 }
2723
2724out:
2725 return ret;
2726}
2727
2728/* AP mode changes */
2729static void wl1271_bss_info_changed_ap(struct wl1271 *wl,
2730 struct ieee80211_vif *vif,
2731 struct ieee80211_bss_conf *bss_conf,
2732 u32 changed)
2733{
2734 int ret = 0;
2735
2736 if ((changed & BSS_CHANGED_BASIC_RATES)) {
2737 u32 rates = bss_conf->basic_rates;
2738
2739 wl->basic_rate_set = wl1271_tx_enabled_rates_get(wl, rates);
2740 wl->basic_rate = wl1271_tx_min_rate_get(wl);
2741
2742 ret = wl1271_init_ap_rates(wl);
2743 if (ret < 0) {
2744 wl1271_error("AP rate policy change failed %d", ret);
2745 goto out;
2746 }
2747
2748 ret = wl1271_ap_init_templates(wl);
2749 if (ret < 0)
2750 goto out;
2751 }
2752
2753 ret = wl1271_bss_beacon_info_changed(wl, vif, bss_conf, changed);
2754 if (ret < 0)
2755 goto out;
2756
2757 if ((changed & BSS_CHANGED_BEACON_ENABLED)) {
2758 if (bss_conf->enable_beacon) {
2759 if (!test_bit(WL1271_FLAG_AP_STARTED, &wl->flags)) {
2760 ret = wl1271_cmd_start_bss(wl);
2761 if (ret < 0)
2762 goto out;
2763
2764 set_bit(WL1271_FLAG_AP_STARTED, &wl->flags);
2765 wl1271_debug(DEBUG_AP, "started AP");
2766
2767 ret = wl1271_ap_init_hwenc(wl);
2768 if (ret < 0)
2769 goto out;
2770 }
2771 } else {
2772 if (test_bit(WL1271_FLAG_AP_STARTED, &wl->flags)) {
2773 ret = wl1271_cmd_stop_bss(wl);
2774 if (ret < 0)
2775 goto out;
2776
2777 clear_bit(WL1271_FLAG_AP_STARTED, &wl->flags);
2778 wl1271_debug(DEBUG_AP, "stopped AP");
2779 }
2780 }
2781 }
2782
2783 if (changed & BSS_CHANGED_IBSS) {
2784 wl1271_debug(DEBUG_ADHOC, "ibss_joined: %d",
2785 bss_conf->ibss_joined);
2786
2787 if (bss_conf->ibss_joined) {
2788 u32 rates = bss_conf->basic_rates;
2789 wl->basic_rate_set = wl1271_tx_enabled_rates_get(wl,
2790 rates);
2791 wl->basic_rate = wl1271_tx_min_rate_get(wl);
2792
2793 /* by default, use 11b rates */
2794 wl->rate_set = CONF_TX_IBSS_DEFAULT_RATES;
2795 ret = wl1271_acx_sta_rate_policies(wl);
2796 if (ret < 0)
2797 goto out;
2798 }
2799 }
2800
2801 ret = wl1271_bss_erp_info_changed(wl, bss_conf, changed);
2802 if (ret < 0)
2803 goto out;
2804out:
2805 return;
2806}
2807
2808/* STA/IBSS mode changes */
2809static void wl1271_bss_info_changed_sta(struct wl1271 *wl,
2810 struct ieee80211_vif *vif,
2811 struct ieee80211_bss_conf *bss_conf,
2812 u32 changed)
2813{
2814 bool do_join = false, set_assoc = false;
2815 bool is_ibss = (wl->bss_type == BSS_TYPE_IBSS);
2816 u32 sta_rate_set = 0;
2817 int ret;
2818 struct ieee80211_sta *sta;
2819 bool sta_exists = false;
2820 struct ieee80211_sta_ht_cap sta_ht_cap;
2821
2822 if (is_ibss) {
2823 ret = wl1271_bss_beacon_info_changed(wl, vif, bss_conf,
2824 changed);
2825 if (ret < 0)
2826 goto out;
2827 }
2828
2829 if ((changed & BSS_CHANGED_BEACON_INT) && is_ibss)
2830 do_join = true;
2831
2832 /* Need to update the SSID (for filtering etc) */
2833 if ((changed & BSS_CHANGED_BEACON) && is_ibss)
2834 do_join = true;
2835
2836 if ((changed & BSS_CHANGED_BEACON_ENABLED) && is_ibss) {
2837 wl1271_debug(DEBUG_ADHOC, "ad-hoc beaconing: %s",
2838 bss_conf->enable_beacon ? "enabled" : "disabled");
2839
2840 if (bss_conf->enable_beacon)
2841 wl->set_bss_type = BSS_TYPE_IBSS;
2842 else
2843 wl->set_bss_type = BSS_TYPE_STA_BSS;
2844 do_join = true;
2845 }
2846
2847 if ((changed & BSS_CHANGED_CQM)) {
2848 bool enable = false;
2849 if (bss_conf->cqm_rssi_thold)
2850 enable = true;
2851 ret = wl1271_acx_rssi_snr_trigger(wl, enable,
2852 bss_conf->cqm_rssi_thold,
2853 bss_conf->cqm_rssi_hyst);
2854 if (ret < 0)
2855 goto out;
2856 wl->rssi_thold = bss_conf->cqm_rssi_thold;
2857 }
2858
2859 if ((changed & BSS_CHANGED_BSSID) &&
2860 /*
2861 * Now we know the correct bssid, so we send a new join command
2862 * and enable the BSSID filter
2863 */
2864 memcmp(wl->bssid, bss_conf->bssid, ETH_ALEN)) {
2865 memcpy(wl->bssid, bss_conf->bssid, ETH_ALEN);
2866
2867 if (!is_zero_ether_addr(wl->bssid)) {
2868 ret = wl1271_cmd_build_null_data(wl);
2869 if (ret < 0)
2870 goto out;
2871
2872 ret = wl1271_build_qos_null_data(wl);
2873 if (ret < 0)
2874 goto out;
2875
2876 /* filter out all packets not from this BSSID */
2877 wl1271_configure_filters(wl, 0);
2878
2879 /* Need to update the BSSID (for filtering etc) */
2880 do_join = true;
2881 }
2882 }
2883
2884 rcu_read_lock();
2885 sta = ieee80211_find_sta(vif, bss_conf->bssid);
2886 if (sta) {
2887 /* save the supp_rates of the ap */
2888 sta_rate_set = sta->supp_rates[wl->hw->conf.channel->band];
2889 if (sta->ht_cap.ht_supported)
2890 sta_rate_set |=
2891 (sta->ht_cap.mcs.rx_mask[0] << HW_HT_RATES_OFFSET);
2892 sta_ht_cap = sta->ht_cap;
2893 sta_exists = true;
2894 }
2895 rcu_read_unlock();
2896
2897 if (sta_exists) {
2898 /* handle new association with HT and HT information change */
2899 if ((changed & BSS_CHANGED_HT) &&
2900 (bss_conf->channel_type != NL80211_CHAN_NO_HT)) {
2901 ret = wl1271_acx_set_ht_capabilities(wl, &sta_ht_cap,
2902 true);
2903 if (ret < 0) {
2904 wl1271_warning("Set ht cap true failed %d",
2905 ret);
2906 goto out;
2907 }
2908 ret = wl1271_acx_set_ht_information(wl,
2909 bss_conf->ht_operation_mode);
2910 if (ret < 0) {
2911 wl1271_warning("Set ht information failed %d",
2912 ret);
2913 goto out;
2914 }
2915 }
2916 /* handle new association without HT and disassociation */
2917 else if (changed & BSS_CHANGED_ASSOC) {
2918 ret = wl1271_acx_set_ht_capabilities(wl, &sta_ht_cap,
2919 false);
2920 if (ret < 0) {
2921 wl1271_warning("Set ht cap false failed %d",
2922 ret);
2923 goto out;
2924 }
2925 }
2926 }
2927
2928 if ((changed & BSS_CHANGED_ASSOC)) {
2929 if (bss_conf->assoc) {
2930 u32 rates;
2931 int ieoffset;
2932 wl->aid = bss_conf->aid;
2933 set_assoc = true;
2934
2935 wl->ps_poll_failures = 0;
2936
2937 /*
2938 * use basic rates from AP, and determine lowest rate
2939 * to use with control frames.
2940 */
2941 rates = bss_conf->basic_rates;
2942 wl->basic_rate_set = wl1271_tx_enabled_rates_get(wl,
2943 rates);
2944 wl->basic_rate = wl1271_tx_min_rate_get(wl);
2945 if (sta_rate_set)
2946 wl->rate_set = wl1271_tx_enabled_rates_get(wl,
2947 sta_rate_set);
2948 ret = wl1271_acx_sta_rate_policies(wl);
2949 if (ret < 0)
2950 goto out;
2951
2952 /*
2953 * with wl1271, we don't need to update the
2954 * beacon_int and dtim_period, because the firmware
2955 * updates it by itself when the first beacon is
2956 * received after a join.
2957 */
2958 ret = wl1271_cmd_build_ps_poll(wl, wl->aid);
2959 if (ret < 0)
2960 goto out;
2961
2962 /*
2963 * Get a template for hardware connection maintenance
2964 */
2965 dev_kfree_skb(wl->probereq);
2966 wl->probereq = wl1271_cmd_build_ap_probe_req(wl, NULL);
2967 ieoffset = offsetof(struct ieee80211_mgmt,
2968 u.probe_req.variable);
2969 wl1271_ssid_set(wl, wl->probereq, ieoffset);
2970
2971 /* enable the connection monitoring feature */
2972 ret = wl1271_acx_conn_monit_params(wl, true);
2973 if (ret < 0)
2974 goto out;
2975
2976 /* If we want to go in PSM but we're not there yet */
2977 if (test_bit(WL1271_FLAG_PSM_REQUESTED, &wl->flags) &&
2978 !test_bit(WL1271_FLAG_PSM, &wl->flags)) {
2979 enum wl1271_cmd_ps_mode mode;
2980
2981 mode = STATION_POWER_SAVE_MODE;
2982 ret = wl1271_ps_set_mode(wl, mode,
2983 wl->basic_rate,
2984 true);
2985 if (ret < 0)
2986 goto out;
2987 }
2988 } else {
2989 /* use defaults when not associated */
2990 bool was_assoc =
2991 !!test_and_clear_bit(WL1271_FLAG_STA_ASSOCIATED,
2992 &wl->flags);
2993 clear_bit(WL1271_FLAG_STA_STATE_SENT, &wl->flags);
2994 wl->aid = 0;
2995
2996 /* free probe-request template */
2997 dev_kfree_skb(wl->probereq);
2998 wl->probereq = NULL;
2999
3000 /* re-enable dynamic ps - just in case */
3001 ieee80211_enable_dyn_ps(wl->vif);
3002
3003 /* revert back to minimum rates for the current band */
3004 wl1271_set_band_rate(wl);
3005 wl->basic_rate = wl1271_tx_min_rate_get(wl);
3006 ret = wl1271_acx_sta_rate_policies(wl);
3007 if (ret < 0)
3008 goto out;
3009
3010 /* disable connection monitor features */
3011 ret = wl1271_acx_conn_monit_params(wl, false);
3012
3013 /* Disable the keep-alive feature */
3014 ret = wl1271_acx_keep_alive_mode(wl, false);
3015 if (ret < 0)
3016 goto out;
3017
3018 /* restore the bssid filter and go to dummy bssid */
3019 if (was_assoc) {
3020 wl1271_unjoin(wl);
3021 wl1271_dummy_join(wl);
3022 }
3023 }
3024 }
3025
3026 ret = wl1271_bss_erp_info_changed(wl, bss_conf, changed);
3027 if (ret < 0)
3028 goto out;
3029
3030 if (changed & BSS_CHANGED_ARP_FILTER) {
3031 __be32 addr = bss_conf->arp_addr_list[0];
3032 WARN_ON(wl->bss_type != BSS_TYPE_STA_BSS);
3033
3034 if (bss_conf->arp_addr_cnt == 1 &&
3035 bss_conf->arp_filter_enabled) {
3036 /*
3037 * The template should have been configured only upon
3038 * association. however, it seems that the correct ip
3039 * isn't being set (when sending), so we have to
3040 * reconfigure the template upon every ip change.
3041 */
3042 ret = wl1271_cmd_build_arp_rsp(wl, addr);
3043 if (ret < 0) {
3044 wl1271_warning("build arp rsp failed: %d", ret);
3045 goto out;
3046 }
3047
3048 ret = wl1271_acx_arp_ip_filter(wl,
3049 ACX_ARP_FILTER_ARP_FILTERING,
3050 addr);
3051 } else
3052 ret = wl1271_acx_arp_ip_filter(wl, 0, addr);
3053
3054 if (ret < 0)
3055 goto out;
3056 }
3057
3058 if (do_join) {
3059 ret = wl1271_join(wl, set_assoc);
3060 if (ret < 0) {
3061 wl1271_warning("cmd join failed %d", ret);
3062 goto out;
3063 }
3064 }
3065
3066out:
3067 return;
3068}
3069
3070static void wl1271_op_bss_info_changed(struct ieee80211_hw *hw,
3071 struct ieee80211_vif *vif,
3072 struct ieee80211_bss_conf *bss_conf,
3073 u32 changed)
3074{
3075 struct wl1271 *wl = hw->priv;
3076 bool is_ap = (wl->bss_type == BSS_TYPE_AP_BSS);
3077 int ret;
3078
3079 wl1271_debug(DEBUG_MAC80211, "mac80211 bss info changed 0x%x",
3080 (int)changed);
3081
3082 mutex_lock(&wl->mutex);
3083
3084 if (unlikely(wl->state == WL1271_STATE_OFF))
3085 goto out;
3086
3087 ret = wl1271_ps_elp_wakeup(wl);
3088 if (ret < 0)
3089 goto out;
3090
3091 if (is_ap)
3092 wl1271_bss_info_changed_ap(wl, vif, bss_conf, changed);
3093 else
3094 wl1271_bss_info_changed_sta(wl, vif, bss_conf, changed);
3095
3096 wl1271_ps_elp_sleep(wl);
3097
3098out:
3099 mutex_unlock(&wl->mutex);
3100}
3101
3102static int wl1271_op_conf_tx(struct ieee80211_hw *hw, u16 queue,
3103 const struct ieee80211_tx_queue_params *params)
3104{
3105 struct wl1271 *wl = hw->priv;
3106 u8 ps_scheme;
3107 int ret = 0;
3108
3109 mutex_lock(&wl->mutex);
3110
3111 wl1271_debug(DEBUG_MAC80211, "mac80211 conf tx %d", queue);
3112
3113 if (params->uapsd)
3114 ps_scheme = CONF_PS_SCHEME_UPSD_TRIGGER;
3115 else
3116 ps_scheme = CONF_PS_SCHEME_LEGACY;
3117
3118 if (wl->state == WL1271_STATE_OFF) {
3119 /*
3120 * If the state is off, the parameters will be recorded and
3121 * configured on init. This happens in AP-mode.
3122 */
3123 struct conf_tx_ac_category *conf_ac =
3124 &wl->conf.tx.ac_conf[wl1271_tx_get_queue(queue)];
3125 struct conf_tx_tid *conf_tid =
3126 &wl->conf.tx.tid_conf[wl1271_tx_get_queue(queue)];
3127
3128 conf_ac->ac = wl1271_tx_get_queue(queue);
3129 conf_ac->cw_min = (u8)params->cw_min;
3130 conf_ac->cw_max = params->cw_max;
3131 conf_ac->aifsn = params->aifs;
3132 conf_ac->tx_op_limit = params->txop << 5;
3133
3134 conf_tid->queue_id = wl1271_tx_get_queue(queue);
3135 conf_tid->channel_type = CONF_CHANNEL_TYPE_EDCF;
3136 conf_tid->tsid = wl1271_tx_get_queue(queue);
3137 conf_tid->ps_scheme = ps_scheme;
3138 conf_tid->ack_policy = CONF_ACK_POLICY_LEGACY;
3139 conf_tid->apsd_conf[0] = 0;
3140 conf_tid->apsd_conf[1] = 0;
3141 goto out;
3142 }
3143
3144 ret = wl1271_ps_elp_wakeup(wl);
3145 if (ret < 0)
3146 goto out;
3147
3148 /*
3149 * the txop is confed in units of 32us by the mac80211,
3150 * we need us
3151 */
3152 ret = wl1271_acx_ac_cfg(wl, wl1271_tx_get_queue(queue),
3153 params->cw_min, params->cw_max,
3154 params->aifs, params->txop << 5);
3155 if (ret < 0)
3156 goto out_sleep;
3157
3158 ret = wl1271_acx_tid_cfg(wl, wl1271_tx_get_queue(queue),
3159 CONF_CHANNEL_TYPE_EDCF,
3160 wl1271_tx_get_queue(queue),
3161 ps_scheme, CONF_ACK_POLICY_LEGACY,
3162 0, 0);
3163
3164out_sleep:
3165 wl1271_ps_elp_sleep(wl);
3166
3167out:
3168 mutex_unlock(&wl->mutex);
3169
3170 return ret;
3171}
3172
3173static u64 wl1271_op_get_tsf(struct ieee80211_hw *hw)
3174{
3175
3176 struct wl1271 *wl = hw->priv;
3177 u64 mactime = ULLONG_MAX;
3178 int ret;
3179
3180 wl1271_debug(DEBUG_MAC80211, "mac80211 get tsf");
3181
3182 mutex_lock(&wl->mutex);
3183
3184 if (unlikely(wl->state == WL1271_STATE_OFF))
3185 goto out;
3186
3187 ret = wl1271_ps_elp_wakeup(wl);
3188 if (ret < 0)
3189 goto out;
3190
3191 ret = wl1271_acx_tsf_info(wl, &mactime);
3192 if (ret < 0)
3193 goto out_sleep;
3194
3195out_sleep:
3196 wl1271_ps_elp_sleep(wl);
3197
3198out:
3199 mutex_unlock(&wl->mutex);
3200 return mactime;
3201}
3202
3203static int wl1271_op_get_survey(struct ieee80211_hw *hw, int idx,
3204 struct survey_info *survey)
3205{
3206 struct wl1271 *wl = hw->priv;
3207 struct ieee80211_conf *conf = &hw->conf;
3208
3209 if (idx != 0)
3210 return -ENOENT;
3211
3212 survey->channel = conf->channel;
3213 survey->filled = SURVEY_INFO_NOISE_DBM;
3214 survey->noise = wl->noise;
3215
3216 return 0;
3217}
3218
3219static int wl1271_allocate_sta(struct wl1271 *wl,
3220 struct ieee80211_sta *sta,
3221 u8 *hlid)
3222{
3223 struct wl1271_station *wl_sta;
3224 int id;
3225
3226 id = find_first_zero_bit(wl->ap_hlid_map, AP_MAX_STATIONS);
3227 if (id >= AP_MAX_STATIONS) {
3228 wl1271_warning("could not allocate HLID - too much stations");
3229 return -EBUSY;
3230 }
3231
3232 wl_sta = (struct wl1271_station *)sta->drv_priv;
3233 __set_bit(id, wl->ap_hlid_map);
3234 wl_sta->hlid = WL1271_AP_STA_HLID_START + id;
3235 *hlid = wl_sta->hlid;
3236 memcpy(wl->links[wl_sta->hlid].addr, sta->addr, ETH_ALEN);
3237 return 0;
3238}
3239
3240static void wl1271_free_sta(struct wl1271 *wl, u8 hlid)
3241{
3242 int id = hlid - WL1271_AP_STA_HLID_START;
3243
3244 if (WARN_ON(!test_bit(id, wl->ap_hlid_map)))
3245 return;
3246
3247 __clear_bit(id, wl->ap_hlid_map);
3248 memset(wl->links[hlid].addr, 0, ETH_ALEN);
3249 wl1271_tx_reset_link_queues(wl, hlid);
3250 __clear_bit(hlid, &wl->ap_ps_map);
3251 __clear_bit(hlid, (unsigned long *)&wl->ap_fw_ps_map);
3252}
3253
3254static int wl1271_op_sta_add(struct ieee80211_hw *hw,
3255 struct ieee80211_vif *vif,
3256 struct ieee80211_sta *sta)
3257{
3258 struct wl1271 *wl = hw->priv;
3259 int ret = 0;
3260 u8 hlid;
3261
3262 mutex_lock(&wl->mutex);
3263
3264 if (unlikely(wl->state == WL1271_STATE_OFF))
3265 goto out;
3266
3267 if (wl->bss_type != BSS_TYPE_AP_BSS)
3268 goto out;
3269
3270 wl1271_debug(DEBUG_MAC80211, "mac80211 add sta %d", (int)sta->aid);
3271
3272 ret = wl1271_allocate_sta(wl, sta, &hlid);
3273 if (ret < 0)
3274 goto out;
3275
3276 ret = wl1271_ps_elp_wakeup(wl);
3277 if (ret < 0)
3278 goto out_free_sta;
3279
3280 ret = wl1271_cmd_add_sta(wl, sta, hlid);
3281 if (ret < 0)
3282 goto out_sleep;
3283
3284out_sleep:
3285 wl1271_ps_elp_sleep(wl);
3286
3287out_free_sta:
3288 if (ret < 0)
3289 wl1271_free_sta(wl, hlid);
3290
3291out:
3292 mutex_unlock(&wl->mutex);
3293 return ret;
3294}
3295
3296static int wl1271_op_sta_remove(struct ieee80211_hw *hw,
3297 struct ieee80211_vif *vif,
3298 struct ieee80211_sta *sta)
3299{
3300 struct wl1271 *wl = hw->priv;
3301 struct wl1271_station *wl_sta;
3302 int ret = 0, id;
3303
3304 mutex_lock(&wl->mutex);
3305
3306 if (unlikely(wl->state == WL1271_STATE_OFF))
3307 goto out;
3308
3309 if (wl->bss_type != BSS_TYPE_AP_BSS)
3310 goto out;
3311
3312 wl1271_debug(DEBUG_MAC80211, "mac80211 remove sta %d", (int)sta->aid);
3313
3314 wl_sta = (struct wl1271_station *)sta->drv_priv;
3315 id = wl_sta->hlid - WL1271_AP_STA_HLID_START;
3316 if (WARN_ON(!test_bit(id, wl->ap_hlid_map)))
3317 goto out;
3318
3319 ret = wl1271_ps_elp_wakeup(wl);
3320 if (ret < 0)
3321 goto out;
3322
3323 ret = wl1271_cmd_remove_sta(wl, wl_sta->hlid);
3324 if (ret < 0)
3325 goto out_sleep;
3326
3327 wl1271_free_sta(wl, wl_sta->hlid);
3328
3329out_sleep:
3330 wl1271_ps_elp_sleep(wl);
3331
3332out:
3333 mutex_unlock(&wl->mutex);
3334 return ret;
3335}
3336
3337static int wl1271_op_ampdu_action(struct ieee80211_hw *hw,
3338 struct ieee80211_vif *vif,
3339 enum ieee80211_ampdu_mlme_action action,
3340 struct ieee80211_sta *sta, u16 tid, u16 *ssn,
3341 u8 buf_size)
3342{
3343 struct wl1271 *wl = hw->priv;
3344 int ret;
3345
3346 mutex_lock(&wl->mutex);
3347
3348 if (unlikely(wl->state == WL1271_STATE_OFF)) {
3349 ret = -EAGAIN;
3350 goto out;
3351 }
3352
3353 ret = wl1271_ps_elp_wakeup(wl);
3354 if (ret < 0)
3355 goto out;
3356
3357 switch (action) {
3358 case IEEE80211_AMPDU_RX_START:
3359 if (wl->ba_support) {
3360 ret = wl1271_acx_set_ba_receiver_session(wl, tid, *ssn,
3361 true);
3362 if (!ret)
3363 wl->ba_rx_bitmap |= BIT(tid);
3364 } else {
3365 ret = -ENOTSUPP;
3366 }
3367 break;
3368
3369 case IEEE80211_AMPDU_RX_STOP:
3370 ret = wl1271_acx_set_ba_receiver_session(wl, tid, 0, false);
3371 if (!ret)
3372 wl->ba_rx_bitmap &= ~BIT(tid);
3373 break;
3374
3375 /*
3376 * The BA initiator session management in FW independently.
3377 * Falling break here on purpose for all TX APDU commands.
3378 */
3379 case IEEE80211_AMPDU_TX_START:
3380 case IEEE80211_AMPDU_TX_STOP:
3381 case IEEE80211_AMPDU_TX_OPERATIONAL:
3382 ret = -EINVAL;
3383 break;
3384
3385 default:
3386 wl1271_error("Incorrect ampdu action id=%x\n", action);
3387 ret = -EINVAL;
3388 }
3389
3390 wl1271_ps_elp_sleep(wl);
3391
3392out:
3393 mutex_unlock(&wl->mutex);
3394
3395 return ret;
3396}
3397
3398static bool wl1271_tx_frames_pending(struct ieee80211_hw *hw)
3399{
3400 struct wl1271 *wl = hw->priv;
3401 bool ret = false;
3402
3403 mutex_lock(&wl->mutex);
3404
3405 if (unlikely(wl->state == WL1271_STATE_OFF))
3406 goto out;
3407
3408 /* packets are considered pending if in the TX queue or the FW */
3409 ret = (wl->tx_queue_count > 0) || (wl->tx_frames_cnt > 0);
3410
3411 /* the above is appropriate for STA mode for PS purposes */
3412 WARN_ON(wl->bss_type != BSS_TYPE_STA_BSS);
3413
3414out:
3415 mutex_unlock(&wl->mutex);
3416
3417 return ret;
3418}
3419
3420/* can't be const, mac80211 writes to this */
3421static struct ieee80211_rate wl1271_rates[] = {
3422 { .bitrate = 10,
3423 .hw_value = CONF_HW_BIT_RATE_1MBPS,
3424 .hw_value_short = CONF_HW_BIT_RATE_1MBPS, },
3425 { .bitrate = 20,
3426 .hw_value = CONF_HW_BIT_RATE_2MBPS,
3427 .hw_value_short = CONF_HW_BIT_RATE_2MBPS,
3428 .flags = IEEE80211_RATE_SHORT_PREAMBLE },
3429 { .bitrate = 55,
3430 .hw_value = CONF_HW_BIT_RATE_5_5MBPS,
3431 .hw_value_short = CONF_HW_BIT_RATE_5_5MBPS,
3432 .flags = IEEE80211_RATE_SHORT_PREAMBLE },
3433 { .bitrate = 110,
3434 .hw_value = CONF_HW_BIT_RATE_11MBPS,
3435 .hw_value_short = CONF_HW_BIT_RATE_11MBPS,
3436 .flags = IEEE80211_RATE_SHORT_PREAMBLE },
3437 { .bitrate = 60,
3438 .hw_value = CONF_HW_BIT_RATE_6MBPS,
3439 .hw_value_short = CONF_HW_BIT_RATE_6MBPS, },
3440 { .bitrate = 90,
3441 .hw_value = CONF_HW_BIT_RATE_9MBPS,
3442 .hw_value_short = CONF_HW_BIT_RATE_9MBPS, },
3443 { .bitrate = 120,
3444 .hw_value = CONF_HW_BIT_RATE_12MBPS,
3445 .hw_value_short = CONF_HW_BIT_RATE_12MBPS, },
3446 { .bitrate = 180,
3447 .hw_value = CONF_HW_BIT_RATE_18MBPS,
3448 .hw_value_short = CONF_HW_BIT_RATE_18MBPS, },
3449 { .bitrate = 240,
3450 .hw_value = CONF_HW_BIT_RATE_24MBPS,
3451 .hw_value_short = CONF_HW_BIT_RATE_24MBPS, },
3452 { .bitrate = 360,
3453 .hw_value = CONF_HW_BIT_RATE_36MBPS,
3454 .hw_value_short = CONF_HW_BIT_RATE_36MBPS, },
3455 { .bitrate = 480,
3456 .hw_value = CONF_HW_BIT_RATE_48MBPS,
3457 .hw_value_short = CONF_HW_BIT_RATE_48MBPS, },
3458 { .bitrate = 540,
3459 .hw_value = CONF_HW_BIT_RATE_54MBPS,
3460 .hw_value_short = CONF_HW_BIT_RATE_54MBPS, },
3461};
3462
3463/* can't be const, mac80211 writes to this */
3464static struct ieee80211_channel wl1271_channels[] = {
3465 { .hw_value = 1, .center_freq = 2412, .max_power = 25 },
3466 { .hw_value = 2, .center_freq = 2417, .max_power = 25 },
3467 { .hw_value = 3, .center_freq = 2422, .max_power = 25 },
3468 { .hw_value = 4, .center_freq = 2427, .max_power = 25 },
3469 { .hw_value = 5, .center_freq = 2432, .max_power = 25 },
3470 { .hw_value = 6, .center_freq = 2437, .max_power = 25 },
3471 { .hw_value = 7, .center_freq = 2442, .max_power = 25 },
3472 { .hw_value = 8, .center_freq = 2447, .max_power = 25 },
3473 { .hw_value = 9, .center_freq = 2452, .max_power = 25 },
3474 { .hw_value = 10, .center_freq = 2457, .max_power = 25 },
3475 { .hw_value = 11, .center_freq = 2462, .max_power = 25 },
3476 { .hw_value = 12, .center_freq = 2467, .max_power = 25 },
3477 { .hw_value = 13, .center_freq = 2472, .max_power = 25 },
3478 { .hw_value = 14, .center_freq = 2484, .max_power = 25 },
3479};
3480
3481/* mapping to indexes for wl1271_rates */
3482static const u8 wl1271_rate_to_idx_2ghz[] = {
3483 /* MCS rates are used only with 11n */
3484 7, /* CONF_HW_RXTX_RATE_MCS7 */
3485 6, /* CONF_HW_RXTX_RATE_MCS6 */
3486 5, /* CONF_HW_RXTX_RATE_MCS5 */
3487 4, /* CONF_HW_RXTX_RATE_MCS4 */
3488 3, /* CONF_HW_RXTX_RATE_MCS3 */
3489 2, /* CONF_HW_RXTX_RATE_MCS2 */
3490 1, /* CONF_HW_RXTX_RATE_MCS1 */
3491 0, /* CONF_HW_RXTX_RATE_MCS0 */
3492
3493 11, /* CONF_HW_RXTX_RATE_54 */
3494 10, /* CONF_HW_RXTX_RATE_48 */
3495 9, /* CONF_HW_RXTX_RATE_36 */
3496 8, /* CONF_HW_RXTX_RATE_24 */
3497
3498 /* TI-specific rate */
3499 CONF_HW_RXTX_RATE_UNSUPPORTED, /* CONF_HW_RXTX_RATE_22 */
3500
3501 7, /* CONF_HW_RXTX_RATE_18 */
3502 6, /* CONF_HW_RXTX_RATE_12 */
3503 3, /* CONF_HW_RXTX_RATE_11 */
3504 5, /* CONF_HW_RXTX_RATE_9 */
3505 4, /* CONF_HW_RXTX_RATE_6 */
3506 2, /* CONF_HW_RXTX_RATE_5_5 */
3507 1, /* CONF_HW_RXTX_RATE_2 */
3508 0 /* CONF_HW_RXTX_RATE_1 */
3509};
3510
3511/* 11n STA capabilities */
3512#define HW_RX_HIGHEST_RATE 72
3513
3514#ifdef CONFIG_WL12XX_HT
3515#define WL12XX_HT_CAP { \
3516 .cap = IEEE80211_HT_CAP_GRN_FLD | IEEE80211_HT_CAP_SGI_20 | \
3517 (1 << IEEE80211_HT_CAP_RX_STBC_SHIFT), \
3518 .ht_supported = true, \
3519 .ampdu_factor = IEEE80211_HT_MAX_AMPDU_8K, \
3520 .ampdu_density = IEEE80211_HT_MPDU_DENSITY_8, \
3521 .mcs = { \
3522 .rx_mask = { 0xff, 0, 0, 0, 0, 0, 0, 0, 0, 0, }, \
3523 .rx_highest = cpu_to_le16(HW_RX_HIGHEST_RATE), \
3524 .tx_params = IEEE80211_HT_MCS_TX_DEFINED, \
3525 }, \
3526}
3527#else
3528#define WL12XX_HT_CAP { \
3529 .ht_supported = false, \
3530}
3531#endif
3532
3533/* can't be const, mac80211 writes to this */
3534static struct ieee80211_supported_band wl1271_band_2ghz = {
3535 .channels = wl1271_channels,
3536 .n_channels = ARRAY_SIZE(wl1271_channels),
3537 .bitrates = wl1271_rates,
3538 .n_bitrates = ARRAY_SIZE(wl1271_rates),
3539 .ht_cap = WL12XX_HT_CAP,
3540};
3541
3542/* 5 GHz data rates for WL1273 */
3543static struct ieee80211_rate wl1271_rates_5ghz[] = {
3544 { .bitrate = 60,
3545 .hw_value = CONF_HW_BIT_RATE_6MBPS,
3546 .hw_value_short = CONF_HW_BIT_RATE_6MBPS, },
3547 { .bitrate = 90,
3548 .hw_value = CONF_HW_BIT_RATE_9MBPS,
3549 .hw_value_short = CONF_HW_BIT_RATE_9MBPS, },
3550 { .bitrate = 120,
3551 .hw_value = CONF_HW_BIT_RATE_12MBPS,
3552 .hw_value_short = CONF_HW_BIT_RATE_12MBPS, },
3553 { .bitrate = 180,
3554 .hw_value = CONF_HW_BIT_RATE_18MBPS,
3555 .hw_value_short = CONF_HW_BIT_RATE_18MBPS, },
3556 { .bitrate = 240,
3557 .hw_value = CONF_HW_BIT_RATE_24MBPS,
3558 .hw_value_short = CONF_HW_BIT_RATE_24MBPS, },
3559 { .bitrate = 360,
3560 .hw_value = CONF_HW_BIT_RATE_36MBPS,
3561 .hw_value_short = CONF_HW_BIT_RATE_36MBPS, },
3562 { .bitrate = 480,
3563 .hw_value = CONF_HW_BIT_RATE_48MBPS,
3564 .hw_value_short = CONF_HW_BIT_RATE_48MBPS, },
3565 { .bitrate = 540,
3566 .hw_value = CONF_HW_BIT_RATE_54MBPS,
3567 .hw_value_short = CONF_HW_BIT_RATE_54MBPS, },
3568};
3569
3570/* 5 GHz band channels for WL1273 */
3571static struct ieee80211_channel wl1271_channels_5ghz[] = {
3572 { .hw_value = 7, .center_freq = 5035},
3573 { .hw_value = 8, .center_freq = 5040},
3574 { .hw_value = 9, .center_freq = 5045},
3575 { .hw_value = 11, .center_freq = 5055},
3576 { .hw_value = 12, .center_freq = 5060},
3577 { .hw_value = 16, .center_freq = 5080},
3578 { .hw_value = 34, .center_freq = 5170},
3579 { .hw_value = 36, .center_freq = 5180},
3580 { .hw_value = 38, .center_freq = 5190},
3581 { .hw_value = 40, .center_freq = 5200},
3582 { .hw_value = 42, .center_freq = 5210},
3583 { .hw_value = 44, .center_freq = 5220},
3584 { .hw_value = 46, .center_freq = 5230},
3585 { .hw_value = 48, .center_freq = 5240},
3586 { .hw_value = 52, .center_freq = 5260},
3587 { .hw_value = 56, .center_freq = 5280},
3588 { .hw_value = 60, .center_freq = 5300},
3589 { .hw_value = 64, .center_freq = 5320},
3590 { .hw_value = 100, .center_freq = 5500},
3591 { .hw_value = 104, .center_freq = 5520},
3592 { .hw_value = 108, .center_freq = 5540},
3593 { .hw_value = 112, .center_freq = 5560},
3594 { .hw_value = 116, .center_freq = 5580},
3595 { .hw_value = 120, .center_freq = 5600},
3596 { .hw_value = 124, .center_freq = 5620},
3597 { .hw_value = 128, .center_freq = 5640},
3598 { .hw_value = 132, .center_freq = 5660},
3599 { .hw_value = 136, .center_freq = 5680},
3600 { .hw_value = 140, .center_freq = 5700},
3601 { .hw_value = 149, .center_freq = 5745},
3602 { .hw_value = 153, .center_freq = 5765},
3603 { .hw_value = 157, .center_freq = 5785},
3604 { .hw_value = 161, .center_freq = 5805},
3605 { .hw_value = 165, .center_freq = 5825},
3606};
3607
3608/* mapping to indexes for wl1271_rates_5ghz */
3609static const u8 wl1271_rate_to_idx_5ghz[] = {
3610 /* MCS rates are used only with 11n */
3611 7, /* CONF_HW_RXTX_RATE_MCS7 */
3612 6, /* CONF_HW_RXTX_RATE_MCS6 */
3613 5, /* CONF_HW_RXTX_RATE_MCS5 */
3614 4, /* CONF_HW_RXTX_RATE_MCS4 */
3615 3, /* CONF_HW_RXTX_RATE_MCS3 */
3616 2, /* CONF_HW_RXTX_RATE_MCS2 */
3617 1, /* CONF_HW_RXTX_RATE_MCS1 */
3618 0, /* CONF_HW_RXTX_RATE_MCS0 */
3619
3620 7, /* CONF_HW_RXTX_RATE_54 */
3621 6, /* CONF_HW_RXTX_RATE_48 */
3622 5, /* CONF_HW_RXTX_RATE_36 */
3623 4, /* CONF_HW_RXTX_RATE_24 */
3624
3625 /* TI-specific rate */
3626 CONF_HW_RXTX_RATE_UNSUPPORTED, /* CONF_HW_RXTX_RATE_22 */
3627
3628 3, /* CONF_HW_RXTX_RATE_18 */
3629 2, /* CONF_HW_RXTX_RATE_12 */
3630 CONF_HW_RXTX_RATE_UNSUPPORTED, /* CONF_HW_RXTX_RATE_11 */
3631 1, /* CONF_HW_RXTX_RATE_9 */
3632 0, /* CONF_HW_RXTX_RATE_6 */
3633 CONF_HW_RXTX_RATE_UNSUPPORTED, /* CONF_HW_RXTX_RATE_5_5 */
3634 CONF_HW_RXTX_RATE_UNSUPPORTED, /* CONF_HW_RXTX_RATE_2 */
3635 CONF_HW_RXTX_RATE_UNSUPPORTED /* CONF_HW_RXTX_RATE_1 */
3636};
3637
3638static struct ieee80211_supported_band wl1271_band_5ghz = {
3639 .channels = wl1271_channels_5ghz,
3640 .n_channels = ARRAY_SIZE(wl1271_channels_5ghz),
3641 .bitrates = wl1271_rates_5ghz,
3642 .n_bitrates = ARRAY_SIZE(wl1271_rates_5ghz),
3643 .ht_cap = WL12XX_HT_CAP,
3644};
3645
3646static const u8 *wl1271_band_rate_to_idx[] = {
3647 [IEEE80211_BAND_2GHZ] = wl1271_rate_to_idx_2ghz,
3648 [IEEE80211_BAND_5GHZ] = wl1271_rate_to_idx_5ghz
3649};
3650
3651static const struct ieee80211_ops wl1271_ops = {
3652 .start = wl1271_op_start,
3653 .stop = wl1271_op_stop,
3654 .add_interface = wl1271_op_add_interface,
3655 .remove_interface = wl1271_op_remove_interface,
3656#ifdef CONFIG_PM
3657 .suspend = wl1271_op_suspend,
3658 .resume = wl1271_op_resume,
3659#endif
3660 .config = wl1271_op_config,
3661 .prepare_multicast = wl1271_op_prepare_multicast,
3662 .configure_filter = wl1271_op_configure_filter,
3663 .tx = wl1271_op_tx,
3664 .set_key = wl1271_op_set_key,
3665 .hw_scan = wl1271_op_hw_scan,
3666 .sched_scan_start = wl1271_op_sched_scan_start,
3667 .sched_scan_stop = wl1271_op_sched_scan_stop,
3668 .bss_info_changed = wl1271_op_bss_info_changed,
3669 .set_frag_threshold = wl1271_op_set_frag_threshold,
3670 .set_rts_threshold = wl1271_op_set_rts_threshold,
3671 .conf_tx = wl1271_op_conf_tx,
3672 .get_tsf = wl1271_op_get_tsf,
3673 .get_survey = wl1271_op_get_survey,
3674 .sta_add = wl1271_op_sta_add,
3675 .sta_remove = wl1271_op_sta_remove,
3676 .ampdu_action = wl1271_op_ampdu_action,
3677 .tx_frames_pending = wl1271_tx_frames_pending,
3678 CFG80211_TESTMODE_CMD(wl1271_tm_cmd)
3679};
3680
3681
3682u8 wl1271_rate_to_idx(int rate, enum ieee80211_band band)
3683{
3684 u8 idx;
3685
3686 BUG_ON(band >= sizeof(wl1271_band_rate_to_idx)/sizeof(u8 *));
3687
3688 if (unlikely(rate >= CONF_HW_RXTX_RATE_MAX)) {
3689 wl1271_error("Illegal RX rate from HW: %d", rate);
3690 return 0;
3691 }
3692
3693 idx = wl1271_band_rate_to_idx[band][rate];
3694 if (unlikely(idx == CONF_HW_RXTX_RATE_UNSUPPORTED)) {
3695 wl1271_error("Unsupported RX rate from HW: %d", rate);
3696 return 0;
3697 }
3698
3699 return idx;
3700}
3701
3702static ssize_t wl1271_sysfs_show_bt_coex_state(struct device *dev,
3703 struct device_attribute *attr,
3704 char *buf)
3705{
3706 struct wl1271 *wl = dev_get_drvdata(dev);
3707 ssize_t len;
3708
3709 len = PAGE_SIZE;
3710
3711 mutex_lock(&wl->mutex);
3712 len = snprintf(buf, len, "%d\n\n0 - off\n1 - on\n",
3713 wl->sg_enabled);
3714 mutex_unlock(&wl->mutex);
3715
3716 return len;
3717
3718}
3719
3720static ssize_t wl1271_sysfs_store_bt_coex_state(struct device *dev,
3721 struct device_attribute *attr,
3722 const char *buf, size_t count)
3723{
3724 struct wl1271 *wl = dev_get_drvdata(dev);
3725 unsigned long res;
3726 int ret;
3727
3728 ret = kstrtoul(buf, 10, &res);
3729 if (ret < 0) {
3730 wl1271_warning("incorrect value written to bt_coex_mode");
3731 return count;
3732 }
3733
3734 mutex_lock(&wl->mutex);
3735
3736 res = !!res;
3737
3738 if (res == wl->sg_enabled)
3739 goto out;
3740
3741 wl->sg_enabled = res;
3742
3743 if (wl->state == WL1271_STATE_OFF)
3744 goto out;
3745
3746 ret = wl1271_ps_elp_wakeup(wl);
3747 if (ret < 0)
3748 goto out;
3749
3750 wl1271_acx_sg_enable(wl, wl->sg_enabled);
3751 wl1271_ps_elp_sleep(wl);
3752
3753 out:
3754 mutex_unlock(&wl->mutex);
3755 return count;
3756}
3757
3758static DEVICE_ATTR(bt_coex_state, S_IRUGO | S_IWUSR,
3759 wl1271_sysfs_show_bt_coex_state,
3760 wl1271_sysfs_store_bt_coex_state);
3761
3762static ssize_t wl1271_sysfs_show_hw_pg_ver(struct device *dev,
3763 struct device_attribute *attr,
3764 char *buf)
3765{
3766 struct wl1271 *wl = dev_get_drvdata(dev);
3767 ssize_t len;
3768
3769 len = PAGE_SIZE;
3770
3771 mutex_lock(&wl->mutex);
3772 if (wl->hw_pg_ver >= 0)
3773 len = snprintf(buf, len, "%d\n", wl->hw_pg_ver);
3774 else
3775 len = snprintf(buf, len, "n/a\n");
3776 mutex_unlock(&wl->mutex);
3777
3778 return len;
3779}
3780
3781static DEVICE_ATTR(hw_pg_ver, S_IRUGO | S_IWUSR,
3782 wl1271_sysfs_show_hw_pg_ver, NULL);
3783
3784int wl1271_register_hw(struct wl1271 *wl)
3785{
3786 int ret;
3787
3788 if (wl->mac80211_registered)
3789 return 0;
3790
3791 ret = wl1271_fetch_nvs(wl);
3792 if (ret == 0) {
3793 /* NOTE: The wl->nvs->nvs element must be first, in
3794 * order to simplify the casting, we assume it is at
3795 * the beginning of the wl->nvs structure.
3796 */
3797 u8 *nvs_ptr = (u8 *)wl->nvs;
3798
3799 wl->mac_addr[0] = nvs_ptr[11];
3800 wl->mac_addr[1] = nvs_ptr[10];
3801 wl->mac_addr[2] = nvs_ptr[6];
3802 wl->mac_addr[3] = nvs_ptr[5];
3803 wl->mac_addr[4] = nvs_ptr[4];
3804 wl->mac_addr[5] = nvs_ptr[3];
3805 }
3806
3807 SET_IEEE80211_PERM_ADDR(wl->hw, wl->mac_addr);
3808
3809 ret = ieee80211_register_hw(wl->hw);
3810 if (ret < 0) {
3811 wl1271_error("unable to register mac80211 hw: %d", ret);
3812 return ret;
3813 }
3814
3815 wl->mac80211_registered = true;
3816
3817 wl1271_debugfs_init(wl);
3818
3819 register_netdevice_notifier(&wl1271_dev_notifier);
3820
3821 wl1271_notice("loaded");
3822
3823 return 0;
3824}
3825EXPORT_SYMBOL_GPL(wl1271_register_hw);
3826
3827void wl1271_unregister_hw(struct wl1271 *wl)
3828{
3829 if (wl->state == WL1271_STATE_PLT)
3830 __wl1271_plt_stop(wl);
3831
3832 unregister_netdevice_notifier(&wl1271_dev_notifier);
3833 ieee80211_unregister_hw(wl->hw);
3834 wl->mac80211_registered = false;
3835
3836}
3837EXPORT_SYMBOL_GPL(wl1271_unregister_hw);
3838
3839int wl1271_init_ieee80211(struct wl1271 *wl)
3840{
3841 static const u32 cipher_suites[] = {
3842 WLAN_CIPHER_SUITE_WEP40,
3843 WLAN_CIPHER_SUITE_WEP104,
3844 WLAN_CIPHER_SUITE_TKIP,
3845 WLAN_CIPHER_SUITE_CCMP,
3846 WL1271_CIPHER_SUITE_GEM,
3847 };
3848
3849 /* The tx descriptor buffer and the TKIP space. */
3850 wl->hw->extra_tx_headroom = WL1271_TKIP_IV_SPACE +
3851 sizeof(struct wl1271_tx_hw_descr);
3852
3853 /* unit us */
3854 /* FIXME: find a proper value */
3855 wl->hw->channel_change_time = 10000;
3856 wl->hw->max_listen_interval = wl->conf.conn.max_listen_interval;
3857
3858 wl->hw->flags = IEEE80211_HW_SIGNAL_DBM |
3859 IEEE80211_HW_BEACON_FILTER |
3860 IEEE80211_HW_SUPPORTS_PS |
3861 IEEE80211_HW_SUPPORTS_UAPSD |
3862 IEEE80211_HW_HAS_RATE_CONTROL |
3863 IEEE80211_HW_CONNECTION_MONITOR |
3864 IEEE80211_HW_SUPPORTS_CQM_RSSI |
3865 IEEE80211_HW_REPORTS_TX_ACK_STATUS |
3866 IEEE80211_HW_SPECTRUM_MGMT |
3867 IEEE80211_HW_AP_LINK_PS;
3868
3869 wl->hw->wiphy->cipher_suites = cipher_suites;
3870 wl->hw->wiphy->n_cipher_suites = ARRAY_SIZE(cipher_suites);
3871
3872 wl->hw->wiphy->interface_modes = BIT(NL80211_IFTYPE_STATION) |
3873 BIT(NL80211_IFTYPE_ADHOC) | BIT(NL80211_IFTYPE_AP);
3874 wl->hw->wiphy->max_scan_ssids = 1;
3875 /*
3876 * Maximum length of elements in scanning probe request templates
3877 * should be the maximum length possible for a template, without
3878 * the IEEE80211 header of the template
3879 */
3880 wl->hw->wiphy->max_scan_ie_len = WL1271_CMD_TEMPL_MAX_SIZE -
3881 sizeof(struct ieee80211_header);
3882
3883 /* make sure all our channels fit in the scanned_ch bitmask */
3884 BUILD_BUG_ON(ARRAY_SIZE(wl1271_channels) +
3885 ARRAY_SIZE(wl1271_channels_5ghz) >
3886 WL1271_MAX_CHANNELS);
3887 /*
3888 * We keep local copies of the band structs because we need to
3889 * modify them on a per-device basis.
3890 */
3891 memcpy(&wl->bands[IEEE80211_BAND_2GHZ], &wl1271_band_2ghz,
3892 sizeof(wl1271_band_2ghz));
3893 memcpy(&wl->bands[IEEE80211_BAND_5GHZ], &wl1271_band_5ghz,
3894 sizeof(wl1271_band_5ghz));
3895
3896 wl->hw->wiphy->bands[IEEE80211_BAND_2GHZ] =
3897 &wl->bands[IEEE80211_BAND_2GHZ];
3898 wl->hw->wiphy->bands[IEEE80211_BAND_5GHZ] =
3899 &wl->bands[IEEE80211_BAND_5GHZ];
3900
3901 wl->hw->queues = 4;
3902 wl->hw->max_rates = 1;
3903
3904 wl->hw->wiphy->reg_notifier = wl1271_reg_notify;
3905
3906 SET_IEEE80211_DEV(wl->hw, wl1271_wl_to_dev(wl));
3907
3908 wl->hw->sta_data_size = sizeof(struct wl1271_station);
3909
3910 wl->hw->max_rx_aggregation_subframes = 8;
3911
3912 return 0;
3913}
3914EXPORT_SYMBOL_GPL(wl1271_init_ieee80211);
3915
3916#define WL1271_DEFAULT_CHANNEL 0
3917
3918struct ieee80211_hw *wl1271_alloc_hw(void)
3919{
3920 struct ieee80211_hw *hw;
3921 struct platform_device *plat_dev = NULL;
3922 struct wl1271 *wl;
3923 int i, j, ret;
3924 unsigned int order;
3925
3926 hw = ieee80211_alloc_hw(sizeof(*wl), &wl1271_ops);
3927 if (!hw) {
3928 wl1271_error("could not alloc ieee80211_hw");
3929 ret = -ENOMEM;
3930 goto err_hw_alloc;
3931 }
3932
3933 plat_dev = kmemdup(&wl1271_device, sizeof(wl1271_device), GFP_KERNEL);
3934 if (!plat_dev) {
3935 wl1271_error("could not allocate platform_device");
3936 ret = -ENOMEM;
3937 goto err_plat_alloc;
3938 }
3939
3940 wl = hw->priv;
3941 memset(wl, 0, sizeof(*wl));
3942
3943 INIT_LIST_HEAD(&wl->list);
3944
3945 wl->hw = hw;
3946 wl->plat_dev = plat_dev;
3947
3948 for (i = 0; i < NUM_TX_QUEUES; i++)
3949 skb_queue_head_init(&wl->tx_queue[i]);
3950
3951 for (i = 0; i < NUM_TX_QUEUES; i++)
3952 for (j = 0; j < AP_MAX_LINKS; j++)
3953 skb_queue_head_init(&wl->links[j].tx_queue[i]);
3954
3955 skb_queue_head_init(&wl->deferred_rx_queue);
3956 skb_queue_head_init(&wl->deferred_tx_queue);
3957
3958 INIT_DELAYED_WORK(&wl->elp_work, wl1271_elp_work);
3959 INIT_DELAYED_WORK(&wl->pspoll_work, wl1271_pspoll_work);
3960 INIT_WORK(&wl->netstack_work, wl1271_netstack_work);
3961 INIT_WORK(&wl->tx_work, wl1271_tx_work);
3962 INIT_WORK(&wl->recovery_work, wl1271_recovery_work);
3963 INIT_DELAYED_WORK(&wl->scan_complete_work, wl1271_scan_complete_work);
3964 wl->channel = WL1271_DEFAULT_CHANNEL;
3965 wl->beacon_int = WL1271_DEFAULT_BEACON_INT;
3966 wl->default_key = 0;
3967 wl->rx_counter = 0;
3968 wl->rx_config = WL1271_DEFAULT_STA_RX_CONFIG;
3969 wl->rx_filter = WL1271_DEFAULT_STA_RX_FILTER;
3970 wl->psm_entry_retry = 0;
3971 wl->power_level = WL1271_DEFAULT_POWER_LEVEL;
3972 wl->basic_rate_set = CONF_TX_RATE_MASK_BASIC;
3973 wl->basic_rate = CONF_TX_RATE_MASK_BASIC;
3974 wl->rate_set = CONF_TX_RATE_MASK_BASIC;
3975 wl->band = IEEE80211_BAND_2GHZ;
3976 wl->vif = NULL;
3977 wl->flags = 0;
3978 wl->sg_enabled = true;
3979 wl->hw_pg_ver = -1;
3980 wl->bss_type = MAX_BSS_TYPE;
3981 wl->set_bss_type = MAX_BSS_TYPE;
3982 wl->fw_bss_type = MAX_BSS_TYPE;
3983 wl->last_tx_hlid = 0;
3984 wl->ap_ps_map = 0;
3985 wl->ap_fw_ps_map = 0;
3986 wl->quirks = 0;
3987 wl->platform_quirks = 0;
3988 wl->sched_scanning = false;
3989
3990 memset(wl->tx_frames_map, 0, sizeof(wl->tx_frames_map));
3991 for (i = 0; i < ACX_TX_DESCRIPTORS; i++)
3992 wl->tx_frames[i] = NULL;
3993
3994 spin_lock_init(&wl->wl_lock);
3995
3996 wl->state = WL1271_STATE_OFF;
3997 mutex_init(&wl->mutex);
3998
3999 /* Apply default driver configuration. */
4000 wl1271_conf_init(wl);
4001
4002 order = get_order(WL1271_AGGR_BUFFER_SIZE);
4003 wl->aggr_buf = (u8 *)__get_free_pages(GFP_KERNEL, order);
4004 if (!wl->aggr_buf) {
4005 ret = -ENOMEM;
4006 goto err_hw;
4007 }
4008
4009 wl->dummy_packet = wl12xx_alloc_dummy_packet(wl);
4010 if (!wl->dummy_packet) {
4011 ret = -ENOMEM;
4012 goto err_aggr;
4013 }
4014
4015 /* Register platform device */
4016 ret = platform_device_register(wl->plat_dev);
4017 if (ret) {
4018 wl1271_error("couldn't register platform device");
4019 goto err_dummy_packet;
4020 }
4021 dev_set_drvdata(&wl->plat_dev->dev, wl);
4022
4023 /* Create sysfs file to control bt coex state */
4024 ret = device_create_file(&wl->plat_dev->dev, &dev_attr_bt_coex_state);
4025 if (ret < 0) {
4026 wl1271_error("failed to create sysfs file bt_coex_state");
4027 goto err_platform;
4028 }
4029
4030 /* Create sysfs file to get HW PG version */
4031 ret = device_create_file(&wl->plat_dev->dev, &dev_attr_hw_pg_ver);
4032 if (ret < 0) {
4033 wl1271_error("failed to create sysfs file hw_pg_ver");
4034 goto err_bt_coex_state;
4035 }
4036
4037 return hw;
4038
4039err_bt_coex_state:
4040 device_remove_file(&wl->plat_dev->dev, &dev_attr_bt_coex_state);
4041
4042err_platform:
4043 platform_device_unregister(wl->plat_dev);
4044
4045err_dummy_packet:
4046 dev_kfree_skb(wl->dummy_packet);
4047
4048err_aggr:
4049 free_pages((unsigned long)wl->aggr_buf, order);
4050
4051err_hw:
4052 wl1271_debugfs_exit(wl);
4053 kfree(plat_dev);
4054
4055err_plat_alloc:
4056 ieee80211_free_hw(hw);
4057
4058err_hw_alloc:
4059
4060 return ERR_PTR(ret);
4061}
4062EXPORT_SYMBOL_GPL(wl1271_alloc_hw);
4063
4064int wl1271_free_hw(struct wl1271 *wl)
4065{
4066 platform_device_unregister(wl->plat_dev);
4067 dev_kfree_skb(wl->dummy_packet);
4068 free_pages((unsigned long)wl->aggr_buf,
4069 get_order(WL1271_AGGR_BUFFER_SIZE));
4070 kfree(wl->plat_dev);
4071
4072 wl1271_debugfs_exit(wl);
4073
4074 vfree(wl->fw);
4075 wl->fw = NULL;
4076 kfree(wl->nvs);
4077 wl->nvs = NULL;
4078
4079 kfree(wl->fw_status);
4080 kfree(wl->tx_res_if);
4081
4082 ieee80211_free_hw(wl->hw);
4083
4084 return 0;
4085}
4086EXPORT_SYMBOL_GPL(wl1271_free_hw);
4087
4088u32 wl12xx_debug_level = DEBUG_NONE;
4089EXPORT_SYMBOL_GPL(wl12xx_debug_level);
4090module_param_named(debug_level, wl12xx_debug_level, uint, S_IRUSR | S_IWUSR);
4091MODULE_PARM_DESC(debug_level, "wl12xx debugging level");
4092
4093MODULE_LICENSE("GPL");
4094MODULE_AUTHOR("Luciano Coelho <coelho@ti.com>");
4095MODULE_AUTHOR("Juuso Oikarinen <juuso.oikarinen@nokia.com>");
generated by cgit v1.2.2 (git 2.25.0) at 2025-04-09 12:29:11 -0400