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iwlwifi: don't clear CTL_AMPDU on frame status
[deliverable/linux.git] / drivers / net / wireless / iwlwifi / dvm / lib.c
CommitLineData
e04ed0a5
WYG		 1/******************************************************************************
2 *
3 * GPL LICENSE SUMMARY
4 *
fb4961db 5 * Copyright(c) 2008 - 2012 Intel Corporation. All rights reserved.
e04ed0a5
WYG		 6 *
7 * This program is free software; you can redistribute it and/or modify
8 * it under the terms of version 2 of the GNU General Public License as
9 * published by the Free Software Foundation.
10 *
11 * This program is distributed in the hope that it will be useful, but
12 * WITHOUT ANY WARRANTY; without even the implied warranty of
13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
14 * General Public License for more details.
15 *
16 * You should have received a copy of the GNU General Public License
17 * along with this program; if not, write to the Free Software
18 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110,
19 * USA
20 *
21 * The full GNU General Public License is included in this distribution
22 * in the file called LICENSE.GPL.
23 *
24 * Contact Information:
25 * Intel Linux Wireless <ilw@linux.intel.com>
26 * Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497
27 *
28 *****************************************************************************/
8d801080 29#include <linux/etherdevice.h>
e04ed0a5
WYG		 30#include <linux/kernel.h>
31#include <linux/module.h>
32#include <linux/init.h>
33#include <linux/sched.h>
dd551ab7 34#include <net/mac80211.h>
e04ed0a5 35
e04ed0a5 36#include "iwl-io.h"
e04ed0a5 37#include "iwl-agn-hw.h"
bdfbf092 38#include "iwl-trans.h"
65de7e84 39#include "iwl-modparams.h"
e04ed0a5 40
1023fdc4
JB		 41#include "dev.h"
42#include "agn.h"
43
e04ed0a5
WYG		 44int iwlagn_hw_valid_rtc_data_addr(u32 addr)
45{
46 return (addr >= IWLAGN_RTC_DATA_LOWER_BOUND) &&
47 (addr < IWLAGN_RTC_DATA_UPPER_BOUND);
48}
49
50int iwlagn_send_tx_power(struct iwl_priv *priv)
51{
ab63c68a 52 struct iwlagn_tx_power_dbm_cmd tx_power_cmd;
e04ed0a5
WYG		 53 u8 tx_ant_cfg_cmd;
54
83626404 55 if (WARN_ONCE(test_bit(STATUS_SCAN_HW, &priv->status),
4beeba7d
SG		 56 "TX Power requested while scanning!\n"))
57 return -EAGAIN;
58
e04ed0a5
WYG		 59 /* half dBm need to multiply */
60 tx_power_cmd.global_lmt = (s8)(2 * priv->tx_power_user_lmt);
61
26a7ca9a 62 if (tx_power_cmd.global_lmt > priv->eeprom_data->max_tx_pwr_half_dbm) {
e04ed0a5
WYG		 63 /*
64 * For the newer devices which using enhanced/extend tx power
65 * table in EEPROM, the format is in half dBm. driver need to
66 * convert to dBm format before report to mac80211.
67 * By doing so, there is a possibility of 1/2 dBm resolution
68 * lost. driver will perform "round-up" operation before
69 * reporting, but it will cause 1/2 dBm tx power over the
70 * regulatory limit. Perform the checking here, if the
71 * "tx_power_user_lmt" is higher than EEPROM value (in
72 * half-dBm format), lower the tx power based on EEPROM
73 */
26a7ca9a
JB		 74 tx_power_cmd.global_lmt =
75 priv->eeprom_data->max_tx_pwr_half_dbm;
e04ed0a5 76 }
ab63c68a
WYG		 77 tx_power_cmd.flags = IWLAGN_TX_POWER_NO_CLOSED;
78 tx_power_cmd.srv_chan_lmt = IWLAGN_TX_POWER_AUTO;
e04ed0a5 79
0692fe41 80 if (IWL_UCODE_API(priv->fw->ucode_ver) == 1)
e04ed0a5
WYG		 81 tx_ant_cfg_cmd = REPLY_TX_POWER_DBM_CMD_V1;
82 else
83 tx_ant_cfg_cmd = REPLY_TX_POWER_DBM_CMD;
84
e10a0533 85 return iwl_dvm_send_cmd_pdu(priv, tx_ant_cfg_cmd, CMD_SYNC,
e419d62d 86 sizeof(tx_power_cmd), &tx_power_cmd);
e04ed0a5
WYG		 87}
88
89void iwlagn_temperature(struct iwl_priv *priv)
90{
4ff70fcd
JB		 91 lockdep_assert_held(&priv->statistics.lock);
92
f8f79a5d 93 /* store temperature from correct statistics (in Celsius) */
0da0e5bf 94 priv->temperature = le32_to_cpu(priv->statistics.common.temperature);
e04ed0a5
WYG		 95 iwl_tt_handler(priv);
96}
97
8d801080
WYG		 98int iwlagn_hwrate_to_mac80211_idx(u32 rate_n_flags, enum ieee80211_band band)
99{
100 int idx = 0;
101 int band_offset = 0;
102
103 /* HT rate format: mac80211 wants an MCS number, which is just LSB */
104 if (rate_n_flags & RATE_MCS_HT_MSK) {
105 idx = (rate_n_flags & 0xff);
106 return idx;
107 /* Legacy rate format, search for match in table */
108 } else {
109 if (band == IEEE80211_BAND_5GHZ)
110 band_offset = IWL_FIRST_OFDM_RATE;
111 for (idx = band_offset; idx < IWL_RATE_COUNT_LEGACY; idx++)
112 if (iwl_rates[idx].plcp == (rate_n_flags & 0xFF))
113 return idx - band_offset;
114 }
115
116 return -1;
117}
118
1fa61b2e
JB		 119int iwlagn_manage_ibss_station(struct iwl_priv *priv,
120 struct ieee80211_vif *vif, bool add)
121{
fd1af15d
JB		 122 struct iwl_vif_priv *vif_priv = (void *)vif->drv_priv;
123
1fa61b2e 124 if (add)
a30e3112
JB		 125 return iwlagn_add_bssid_station(priv, vif_priv->ctx,
126 vif->bss_conf.bssid,
127 &vif_priv->ibss_bssid_sta_id);
fd1af15d
JB		 128 return iwl_remove_station(priv, vif_priv->ibss_bssid_sta_id,
129 vif->bss_conf.bssid);
1fa61b2e 130}
1ff504e0 131
716c74b0
WYG		 132/**
133 * iwlagn_txfifo_flush: send REPLY_TXFIFO_FLUSH command to uCode
134 *
135 * pre-requirements:
136 * 1. acquire mutex before calling
137 * 2. make sure rf is on and not in exit state
138 */
139int iwlagn_txfifo_flush(struct iwl_priv *priv, u16 flush_control)
140{
141 struct iwl_txfifo_flush_cmd flush_cmd;
142 struct iwl_host_cmd cmd = {
143 .id = REPLY_TXFIFO_FLUSH,
3fa50738 144 .len = { sizeof(struct iwl_txfifo_flush_cmd), },
716c74b0 145 .flags = CMD_SYNC,
3fa50738 146 .data = { &flush_cmd, },
716c74b0
WYG		 147 };
148
149 might_sleep();
150
151 memset(&flush_cmd, 0, sizeof(flush_cmd));
ecdbe86e 152 if (flush_control & BIT(IWL_RXON_CTX_BSS))
37c477dc 153 flush_cmd.queue_control = IWL_SCD_VO_MSK | IWL_SCD_VI_MSK |
f88e0ecc
WYG		 154 IWL_SCD_BE_MSK | IWL_SCD_BK_MSK |
155 IWL_SCD_MGMT_MSK;
ecdbe86e 156 if ((flush_control & BIT(IWL_RXON_CTX_PAN)) &&
a18f61bc 157 (priv->valid_contexts != BIT(IWL_RXON_CTX_BSS)))
37c477dc 158 flush_cmd.queue_control |= IWL_PAN_SCD_VO_MSK |
f88e0ecc
WYG		 159 IWL_PAN_SCD_VI_MSK | IWL_PAN_SCD_BE_MSK |
160 IWL_PAN_SCD_BK_MSK | IWL_PAN_SCD_MGMT_MSK |
161 IWL_PAN_SCD_MULTICAST_MSK;
162
8d40f4ee 163 if (priv->eeprom_data->sku & EEPROM_SKU_CAP_11N_ENABLE)
37c477dc 164 flush_cmd.queue_control |= IWL_AGG_TX_QUEUE_MSK;
716c74b0 165
37c477dc
JB		 166 IWL_DEBUG_INFO(priv, "queue control: 0x%x\n",
167 flush_cmd.queue_control);
716c74b0
WYG		 168 flush_cmd.flush_control = cpu_to_le16(flush_control);
169
e10a0533 170 return iwl_dvm_send_cmd(priv, &cmd);
716c74b0 171}
65550636
WYG		 172
173void iwlagn_dev_txfifo_flush(struct iwl_priv *priv, u16 flush_control)
174{
b1eea297 175 mutex_lock(&priv->mutex);
65550636 176 ieee80211_stop_queues(priv->hw);
c68744fb 177 if (iwlagn_txfifo_flush(priv, IWL_DROP_ALL)) {
65550636
WYG		 178 IWL_ERR(priv, "flush request fail\n");
179 goto done;
180 }
181 IWL_DEBUG_INFO(priv, "wait transmit/flush all frames\n");
68e8dfda 182 iwl_trans_wait_tx_queue_empty(priv->trans);
65550636
WYG		 183done:
184 ieee80211_wake_queues(priv->hw);
b1eea297 185 mutex_unlock(&priv->mutex);
65550636 186}
b6e116e8
WYG		 187
188/*
189 * BT coex
190 */
4d5ba61c
WYG		 191/* Notmal TDM */
192static const __le32 iwlagn_def_3w_lookup[IWLAGN_BT_DECISION_LUT_SIZE] = {
b6e116e8
WYG		 193 cpu_to_le32(0xaaaaaaaa),
194 cpu_to_le32(0xaaaaaaaa),
195 cpu_to_le32(0xaeaaaaaa),
196 cpu_to_le32(0xaaaaaaaa),
197 cpu_to_le32(0xcc00ff28),
198 cpu_to_le32(0x0000aaaa),
199 cpu_to_le32(0xcc00aaaa),
200 cpu_to_le32(0x0000aaaa),
201 cpu_to_le32(0xc0004000),
202 cpu_to_le32(0x00004000),
203 cpu_to_le32(0xf0005000),
9a67d761 204 cpu_to_le32(0xf0005000),
b6e116e8
WYG		 205};
206
4d5ba61c
WYG		 207
208/* Loose Coex */
209static const __le32 iwlagn_loose_lookup[IWLAGN_BT_DECISION_LUT_SIZE] = {
210 cpu_to_le32(0xaaaaaaaa),
211 cpu_to_le32(0xaaaaaaaa),
212 cpu_to_le32(0xaeaaaaaa),
213 cpu_to_le32(0xaaaaaaaa),
214 cpu_to_le32(0xcc00ff28),
215 cpu_to_le32(0x0000aaaa),
216 cpu_to_le32(0xcc00aaaa),
217 cpu_to_le32(0x0000aaaa),
218 cpu_to_le32(0x00000000),
219 cpu_to_le32(0x00000000),
220 cpu_to_le32(0xf0005000),
221 cpu_to_le32(0xf0005000),
222};
223
224/* Full concurrency */
225static const __le32 iwlagn_concurrent_lookup[IWLAGN_BT_DECISION_LUT_SIZE] = {
b6e116e8
WYG		 226 cpu_to_le32(0xaaaaaaaa),
227 cpu_to_le32(0xaaaaaaaa),
228 cpu_to_le32(0xaaaaaaaa),
229 cpu_to_le32(0xaaaaaaaa),
230 cpu_to_le32(0xaaaaaaaa),
231 cpu_to_le32(0xaaaaaaaa),
232 cpu_to_le32(0xaaaaaaaa),
233 cpu_to_le32(0xaaaaaaaa),
234 cpu_to_le32(0x00000000),
235 cpu_to_le32(0x00000000),
236 cpu_to_le32(0x00000000),
237 cpu_to_le32(0x00000000),
238};
239
240void iwlagn_send_advance_bt_config(struct iwl_priv *priv)
241{
6013270a 242 struct iwl_basic_bt_cmd basic = {
b6e116e8
WYG		 243 .max_kill = IWLAGN_BT_MAX_KILL_DEFAULT,
244 .bt3_timer_t7_value = IWLAGN_BT3_T7_DEFAULT,
245 .bt3_prio_sample_time = IWLAGN_BT3_PRIO_SAMPLE_DEFAULT,
246 .bt3_timer_t2_value = IWLAGN_BT3_T2_DEFAULT,
247 };
8347deb3
WYG		 248 struct iwl_bt_cmd_v1 bt_cmd_v1;
249 struct iwl_bt_cmd_v2 bt_cmd_v2;
6013270a 250 int ret;
b6e116e8
WYG		 251
252 BUILD_BUG_ON(sizeof(iwlagn_def_3w_lookup) !=
6013270a
WYG		 253 sizeof(basic.bt3_lookup_table));
254
2152268f 255 if (priv->cfg->bt_params) {
8347deb3
WYG		 256 /*
257 * newer generation of devices (2000 series and newer)
258 * use the version 2 of the bt command
259 * we need to make sure sending the host command
260 * with correct data structure to avoid uCode assert
261 */
2152268f 262 if (priv->cfg->bt_params->bt_session_2) {
8347deb3 263 bt_cmd_v2.prio_boost = cpu_to_le32(
2152268f 264 priv->cfg->bt_params->bt_prio_boost);
8347deb3
WYG		 265 bt_cmd_v2.tx_prio_boost = 0;
266 bt_cmd_v2.rx_prio_boost = 0;
6013270a 267 } else {
e911ede7
WYG		 268 /* older version only has 8 bits */
269 WARN_ON(priv->cfg->bt_params->bt_prio_boost & ~0xFF);
8347deb3 270 bt_cmd_v1.prio_boost =
2152268f 271 priv->cfg->bt_params->bt_prio_boost;
8347deb3
WYG		 272 bt_cmd_v1.tx_prio_boost = 0;
273 bt_cmd_v1.rx_prio_boost = 0;
6013270a
WYG		 274 }
275 } else {
276 IWL_ERR(priv, "failed to construct BT Coex Config\n");
277 return;
278 }
506aa156 279
83ce21de
WYG		 280 /*
281 * Possible situations when BT needs to take over for receive,
282 * at the same time where STA needs to response to AP's frame(s),
283 * reduce the tx power of the required response frames, by that,
284 * allow the concurrent BT receive & WiFi transmit
285 * (BT - ANT A, WiFi -ANT B), without interference to one another
286 *
287 * Reduced tx power apply to control frames only (ACK/Back/CTS)
288 * when indicated by the BT config command
289 */
6013270a
WYG		 290 basic.kill_ack_mask = priv->kill_ack_mask;
291 basic.kill_cts_mask = priv->kill_cts_mask;
83ce21de
WYG		 292 if (priv->reduced_txpower)
293 basic.reduce_txpower = IWLAGN_BT_REDUCED_TX_PWR;
6013270a 294 basic.valid = priv->bt_valid;
b6e116e8
WYG		 295
296 /*
297 * Configure BT coex mode to "no coexistence" when the
298 * user disabled BT coexistence, we have no interface
299 * (might be in monitor mode), or the interface is in
300 * IBSS mode (no proper uCode support for coex then).
301 */
65de7e84 302 if (!iwlwifi_mod_params.bt_coex_active ||
b60eec9b 303 priv->iw_mode == NL80211_IFTYPE_ADHOC) {
6013270a 304 basic.flags = IWLAGN_BT_FLAG_COEX_MODE_DISABLED;
b6e116e8 305 } else {
6013270a 306 basic.flags = IWLAGN_BT_FLAG_COEX_MODE_3W <<
b6e116e8 307 IWLAGN_BT_FLAG_COEX_MODE_SHIFT;
207ecc5e
MV		 308
309 if (!priv->bt_enable_pspoll)
6013270a 310 basic.flags |= IWLAGN_BT_FLAG_SYNC_2_BT_DISABLE;
207ecc5e
MV		 311 else
312 basic.flags &= ~IWLAGN_BT_FLAG_SYNC_2_BT_DISABLE;
e366176e 313
b6e116e8 314 if (priv->bt_ch_announce)
6013270a 315 basic.flags |= IWLAGN_BT_FLAG_CHANNEL_INHIBITION;
fa7f1413 316 IWL_DEBUG_COEX(priv, "BT coex flag: 0X%x\n", basic.flags);
b6e116e8 317 }
6013270a 318 priv->bt_enable_flag = basic.flags;
b6e116e8 319 if (priv->bt_full_concurrent)
6013270a 320 memcpy(basic.bt3_lookup_table, iwlagn_concurrent_lookup,
b6e116e8
WYG		 321 sizeof(iwlagn_concurrent_lookup));
322 else
6013270a 323 memcpy(basic.bt3_lookup_table, iwlagn_def_3w_lookup,
b6e116e8
WYG		 324 sizeof(iwlagn_def_3w_lookup));
325
fa7f1413 326 IWL_DEBUG_COEX(priv, "BT coex %s in %s mode\n",
6013270a 327 basic.flags ? "active" : "disabled",
b6e116e8
WYG		 328 priv->bt_full_concurrent ?
329 "full concurrency" : "3-wire");
330
2152268f 331 if (priv->cfg->bt_params->bt_session_2) {
8347deb3 332 memcpy(&bt_cmd_v2.basic, &basic,
6013270a 333 sizeof(basic));
e10a0533 334 ret = iwl_dvm_send_cmd_pdu(priv, REPLY_BT_CONFIG,
8347deb3 335 CMD_SYNC, sizeof(bt_cmd_v2), &bt_cmd_v2);
6013270a 336 } else {
8347deb3 337 memcpy(&bt_cmd_v1.basic, &basic,
6013270a 338 sizeof(basic));
e10a0533 339 ret = iwl_dvm_send_cmd_pdu(priv, REPLY_BT_CONFIG,
8347deb3 340 CMD_SYNC, sizeof(bt_cmd_v1), &bt_cmd_v1);
6013270a
WYG		 341 }
342 if (ret)
b6e116e8
WYG		 343 IWL_ERR(priv, "failed to send BT Coex Config\n");
344
b6e116e8
WYG		 345}
346
207ecc5e
MV		 347void iwlagn_bt_adjust_rssi_monitor(struct iwl_priv *priv, bool rssi_ena)
348{
349 struct iwl_rxon_context *ctx, *found_ctx = NULL;
350 bool found_ap = false;
351
b1eea297 352 lockdep_assert_held(&priv->mutex);
207ecc5e
MV		 353
354 /* Check whether AP or GO mode is active. */
355 if (rssi_ena) {
356 for_each_context(priv, ctx) {
357 if (ctx->vif && ctx->vif->type == NL80211_IFTYPE_AP &&
358 iwl_is_associated_ctx(ctx)) {
359 found_ap = true;
360 break;
361 }
362 }
363 }
364
365 /*
366 * If disable was received or If GO/AP mode, disable RSSI
367 * measurements.
368 */
369 if (!rssi_ena || found_ap) {
370 if (priv->cur_rssi_ctx) {
371 ctx = priv->cur_rssi_ctx;
372 ieee80211_disable_rssi_reports(ctx->vif);
373 priv->cur_rssi_ctx = NULL;
374 }
375 return;
376 }
377
378 /*
379 * If rssi measurements need to be enabled, consider all cases now.
380 * Figure out how many contexts are active.
381 */
382 for_each_context(priv, ctx) {
383 if (ctx->vif && ctx->vif->type == NL80211_IFTYPE_STATION &&
384 iwl_is_associated_ctx(ctx)) {
385 found_ctx = ctx;
386 break;
387 }
388 }
389
390 /*
391 * rssi monitor already enabled for the correct interface...nothing
392 * to do.
393 */
394 if (found_ctx == priv->cur_rssi_ctx)
395 return;
396
397 /*
398 * Figure out if rssi monitor is currently enabled, and needs
399 * to be changed. If rssi monitor is already enabled, disable
400 * it first else just enable rssi measurements on the
401 * interface found above.
402 */
403 if (priv->cur_rssi_ctx) {
404 ctx = priv->cur_rssi_ctx;
405 if (ctx->vif)
406 ieee80211_disable_rssi_reports(ctx->vif);
407 }
408
409 priv->cur_rssi_ctx = found_ctx;
410
411 if (!found_ctx)
412 return;
413
414 ieee80211_enable_rssi_reports(found_ctx->vif,
415 IWLAGN_BT_PSP_MIN_RSSI_THRESHOLD,
416 IWLAGN_BT_PSP_MAX_RSSI_THRESHOLD);
417}
418
419static bool iwlagn_bt_traffic_is_sco(struct iwl_bt_uart_msg *uart_msg)
420{
421 return BT_UART_MSG_FRAME3SCOESCO_MSK & uart_msg->frame3 >>
422 BT_UART_MSG_FRAME3SCOESCO_POS;
423}
424
b6e116e8
WYG		 425static void iwlagn_bt_traffic_change_work(struct work_struct *work)
426{
427 struct iwl_priv *priv =
428 container_of(work, struct iwl_priv, bt_traffic_change_work);
8bd413e6 429 struct iwl_rxon_context *ctx;
b6e116e8
WYG		 430 int smps_request = -1;
431
c4197c62
WYG		 432 if (priv->bt_enable_flag == IWLAGN_BT_FLAG_COEX_MODE_DISABLED) {
433 /* bt coex disabled */
434 return;
435 }
436
5eda74a4
SG		 437 /*
438 * Note: bt_traffic_load can be overridden by scan complete and
439 * coex profile notifications. Ignore that since only bad consequence
440 * can be not matching debug print with actual state.
441 */
fa7f1413 442 IWL_DEBUG_COEX(priv, "BT traffic load changes: %d\n",
b6e116e8
WYG		 443 priv->bt_traffic_load);
444
445 switch (priv->bt_traffic_load) {
446 case IWL_BT_COEX_TRAFFIC_LOAD_NONE:
f5682c01
WYG		 447 if (priv->bt_status)
448 smps_request = IEEE80211_SMPS_DYNAMIC;
449 else
450 smps_request = IEEE80211_SMPS_AUTOMATIC;
b6e116e8
WYG		 451 break;
452 case IWL_BT_COEX_TRAFFIC_LOAD_LOW:
453 smps_request = IEEE80211_SMPS_DYNAMIC;
454 break;
455 case IWL_BT_COEX_TRAFFIC_LOAD_HIGH:
456 case IWL_BT_COEX_TRAFFIC_LOAD_CONTINUOUS:
457 smps_request = IEEE80211_SMPS_STATIC;
458 break;
459 default:
460 IWL_ERR(priv, "Invalid BT traffic load: %d\n",
461 priv->bt_traffic_load);
462 break;
463 }
464
b1eea297 465 mutex_lock(&priv->mutex);
b6e116e8 466
5eda74a4
SG		 467 /*
468 * We can not send command to firmware while scanning. When the scan
469 * complete we will schedule this work again. We do check with mutex
470 * locked to prevent new scan request to arrive. We do not check
471 * STATUS_SCANNING to avoid race when queue_work two times from
472 * different notifications, but quit and not perform any work at all.
473 */
83626404 474 if (test_bit(STATUS_SCAN_HW, &priv->status))
5eda74a4
SG		 475 goto out;
476
6b6db91c 477 iwl_update_chain_flags(priv);
b6e116e8 478
8bd413e6 479 if (smps_request != -1) {
88e9ba76 480 priv->current_ht_config.smps = smps_request;
8bd413e6
JB		 481 for_each_context(priv, ctx) {
482 if (ctx->vif && ctx->vif->type == NL80211_IFTYPE_STATION)
483 ieee80211_request_smps(ctx->vif, smps_request);
484 }
485 }
207ecc5e
MV		 486
487 /*
488 * Dynamic PS poll related functionality. Adjust RSSI measurements if
489 * necessary.
490 */
491 iwlagn_bt_coex_rssi_monitor(priv);
5eda74a4 492out:
b1eea297 493 mutex_unlock(&priv->mutex);
b6e116e8
WYG		 494}
495
207ecc5e
MV		 496/*
497 * If BT sco traffic, and RSSI monitor is enabled, move measurements to the
498 * correct interface or disable it if this is the last interface to be
499 * removed.
500 */
501void iwlagn_bt_coex_rssi_monitor(struct iwl_priv *priv)
502{
503 if (priv->bt_is_sco &&
504 priv->bt_traffic_load == IWL_BT_COEX_TRAFFIC_LOAD_CONTINUOUS)
505 iwlagn_bt_adjust_rssi_monitor(priv, true);
506 else
507 iwlagn_bt_adjust_rssi_monitor(priv, false);
508}
509
b6e116e8
WYG		 510static void iwlagn_print_uartmsg(struct iwl_priv *priv,
511 struct iwl_bt_uart_msg *uart_msg)
512{
fa7f1413 513 IWL_DEBUG_COEX(priv, "Message Type = 0x%X, SSN = 0x%X, "
0ca24daf 514 "Update Req = 0x%X\n",
b6e116e8
WYG		 515 (BT_UART_MSG_FRAME1MSGTYPE_MSK & uart_msg->frame1) >>
516 BT_UART_MSG_FRAME1MSGTYPE_POS,
517 (BT_UART_MSG_FRAME1SSN_MSK & uart_msg->frame1) >>
518 BT_UART_MSG_FRAME1SSN_POS,
519 (BT_UART_MSG_FRAME1UPDATEREQ_MSK & uart_msg->frame1) >>
520 BT_UART_MSG_FRAME1UPDATEREQ_POS);
521
fa7f1413 522 IWL_DEBUG_COEX(priv, "Open connections = 0x%X, Traffic load = 0x%X, "
0ca24daf 523 "Chl_SeqN = 0x%X, In band = 0x%X\n",
b6e116e8
WYG		 524 (BT_UART_MSG_FRAME2OPENCONNECTIONS_MSK & uart_msg->frame2) >>
525 BT_UART_MSG_FRAME2OPENCONNECTIONS_POS,
526 (BT_UART_MSG_FRAME2TRAFFICLOAD_MSK & uart_msg->frame2) >>
527 BT_UART_MSG_FRAME2TRAFFICLOAD_POS,
528 (BT_UART_MSG_FRAME2CHLSEQN_MSK & uart_msg->frame2) >>
529 BT_UART_MSG_FRAME2CHLSEQN_POS,
530 (BT_UART_MSG_FRAME2INBAND_MSK & uart_msg->frame2) >>
531 BT_UART_MSG_FRAME2INBAND_POS);
532
fa7f1413 533 IWL_DEBUG_COEX(priv, "SCO/eSCO = 0x%X, Sniff = 0x%X, A2DP = 0x%X, "
0ca24daf 534 "ACL = 0x%X, Master = 0x%X, OBEX = 0x%X\n",
b6e116e8
WYG		 535 (BT_UART_MSG_FRAME3SCOESCO_MSK & uart_msg->frame3) >>
536 BT_UART_MSG_FRAME3SCOESCO_POS,
537 (BT_UART_MSG_FRAME3SNIFF_MSK & uart_msg->frame3) >>
538 BT_UART_MSG_FRAME3SNIFF_POS,
539 (BT_UART_MSG_FRAME3A2DP_MSK & uart_msg->frame3) >>
540 BT_UART_MSG_FRAME3A2DP_POS,
541 (BT_UART_MSG_FRAME3ACL_MSK & uart_msg->frame3) >>
542 BT_UART_MSG_FRAME3ACL_POS,
543 (BT_UART_MSG_FRAME3MASTER_MSK & uart_msg->frame3) >>
544 BT_UART_MSG_FRAME3MASTER_POS,
545 (BT_UART_MSG_FRAME3OBEX_MSK & uart_msg->frame3) >>
546 BT_UART_MSG_FRAME3OBEX_POS);
547
0ca24daf 548 IWL_DEBUG_COEX(priv, "Idle duration = 0x%X\n",
b6e116e8
WYG		 549 (BT_UART_MSG_FRAME4IDLEDURATION_MSK & uart_msg->frame4) >>
550 BT_UART_MSG_FRAME4IDLEDURATION_POS);
551
fa7f1413 552 IWL_DEBUG_COEX(priv, "Tx Activity = 0x%X, Rx Activity = 0x%X, "
0ca24daf 553 "eSCO Retransmissions = 0x%X\n",
b6e116e8
WYG		 554 (BT_UART_MSG_FRAME5TXACTIVITY_MSK & uart_msg->frame5) >>
555 BT_UART_MSG_FRAME5TXACTIVITY_POS,
556 (BT_UART_MSG_FRAME5RXACTIVITY_MSK & uart_msg->frame5) >>
557 BT_UART_MSG_FRAME5RXACTIVITY_POS,
558 (BT_UART_MSG_FRAME5ESCORETRANSMIT_MSK & uart_msg->frame5) >>
559 BT_UART_MSG_FRAME5ESCORETRANSMIT_POS);
560
0ca24daf 561 IWL_DEBUG_COEX(priv, "Sniff Interval = 0x%X, Discoverable = 0x%X\n",
b6e116e8
WYG		 562 (BT_UART_MSG_FRAME6SNIFFINTERVAL_MSK & uart_msg->frame6) >>
563 BT_UART_MSG_FRAME6SNIFFINTERVAL_POS,
564 (BT_UART_MSG_FRAME6DISCOVERABLE_MSK & uart_msg->frame6) >>
565 BT_UART_MSG_FRAME6DISCOVERABLE_POS);
566
fa7f1413 567 IWL_DEBUG_COEX(priv, "Sniff Activity = 0x%X, Page = "
0ca24daf 568 "0x%X, Inquiry = 0x%X, Connectable = 0x%X\n",
b6e116e8
WYG		 569 (BT_UART_MSG_FRAME7SNIFFACTIVITY_MSK & uart_msg->frame7) >>
570 BT_UART_MSG_FRAME7SNIFFACTIVITY_POS,
399f66fd
WYG		 571 (BT_UART_MSG_FRAME7PAGE_MSK & uart_msg->frame7) >>
572 BT_UART_MSG_FRAME7PAGE_POS,
573 (BT_UART_MSG_FRAME7INQUIRY_MSK & uart_msg->frame7) >>
574 BT_UART_MSG_FRAME7INQUIRY_POS,
b6e116e8
WYG		 575 (BT_UART_MSG_FRAME7CONNECTABLE_MSK & uart_msg->frame7) >>
576 BT_UART_MSG_FRAME7CONNECTABLE_POS);
577}
578
354ce4a4 579static bool iwlagn_set_kill_msk(struct iwl_priv *priv,
506aa156 580 struct iwl_bt_uart_msg *uart_msg)
b6e116e8 581{
354ce4a4 582 bool need_update = false;
9dc4ca92
WYG		 583 u8 kill_msk = IWL_BT_KILL_REDUCE;
584 static const __le32 bt_kill_ack_msg[3] = {
506aa156 585 IWLAGN_BT_KILL_ACK_MASK_DEFAULT,
9dc4ca92
WYG		 586 IWLAGN_BT_KILL_ACK_CTS_MASK_SCO,
587 IWLAGN_BT_KILL_ACK_CTS_MASK_REDUCE};
588 static const __le32 bt_kill_cts_msg[3] = {
506aa156 589 IWLAGN_BT_KILL_CTS_MASK_DEFAULT,
9dc4ca92
WYG		 590 IWLAGN_BT_KILL_ACK_CTS_MASK_SCO,
591 IWLAGN_BT_KILL_ACK_CTS_MASK_REDUCE};
506aa156 592
9dc4ca92
WYG		 593 if (!priv->reduced_txpower)
594 kill_msk = (BT_UART_MSG_FRAME3SCOESCO_MSK & uart_msg->frame3)
595 ? IWL_BT_KILL_OVERRIDE : IWL_BT_KILL_DEFAULT;
506aa156
WYG		 596 if (priv->kill_ack_mask != bt_kill_ack_msg[kill_msk] ||
597 priv->kill_cts_mask != bt_kill_cts_msg[kill_msk]) {
b6e116e8 598 priv->bt_valid |= IWLAGN_BT_VALID_KILL_ACK_MASK;
506aa156
WYG		 599 priv->kill_ack_mask = bt_kill_ack_msg[kill_msk];
600 priv->bt_valid |= IWLAGN_BT_VALID_KILL_CTS_MASK;
601 priv->kill_cts_mask = bt_kill_cts_msg[kill_msk];
354ce4a4
WYG		 602 need_update = true;
603 }
604 return need_update;
605}
506aa156 606
83ce21de
WYG		 607/*
608 * Upon RSSI changes, sends a bt config command with following changes
609 * 1. enable/disable "reduced control frames tx power
610 * 2. update the "kill)ack_mask" and "kill_cts_mask"
611 *
612 * If "reduced tx power" is enabled, uCode shall
613 * 1. ACK/Back/CTS rate shall reduced to 6Mbps
614 * 2. not use duplciate 20/40MHz mode
615 */
354ce4a4
WYG		 616static bool iwlagn_fill_txpower_mode(struct iwl_priv *priv,
617 struct iwl_bt_uart_msg *uart_msg)
618{
619 bool need_update = false;
dd551ab7
WYG		 620 struct iwl_rxon_context *ctx = &priv->contexts[IWL_RXON_CTX_BSS];
621 int ave_rssi;
622
e19ebcab
IP		 623 if (!ctx->vif || (ctx->vif->type != NL80211_IFTYPE_STATION)) {
624 IWL_DEBUG_INFO(priv, "BSS ctx not active or not in sta mode\n");
625 return false;
626 }
627
dd551ab7
WYG		 628 ave_rssi = ieee80211_ave_rssi(ctx->vif);
629 if (!ave_rssi) {
630 /* no rssi data, no changes to reduce tx power */
631 IWL_DEBUG_COEX(priv, "no rssi data available\n");
632 return need_update;
633 }
354ce4a4
WYG		 634 if (!priv->reduced_txpower &&
635 !iwl_is_associated(priv, IWL_RXON_CTX_PAN) &&
dd551ab7 636 (ave_rssi > BT_ENABLE_REDUCED_TXPOWER_THRESHOLD) &&
354ce4a4
WYG		 637 (uart_msg->frame3 & (BT_UART_MSG_FRAME3ACL_MSK |
638 BT_UART_MSG_FRAME3OBEX_MSK)) &&
639 !(uart_msg->frame3 & (BT_UART_MSG_FRAME3SCOESCO_MSK |
640 BT_UART_MSG_FRAME3SNIFF_MSK | BT_UART_MSG_FRAME3A2DP_MSK))) {
641 /* enabling reduced tx power */
642 priv->reduced_txpower = true;
643 priv->bt_valid |= IWLAGN_BT_VALID_REDUCED_TX_PWR;
644 need_update = true;
645 } else if (priv->reduced_txpower &&
646 (iwl_is_associated(priv, IWL_RXON_CTX_PAN) ||
dd551ab7 647 (ave_rssi < BT_DISABLE_REDUCED_TXPOWER_THRESHOLD) ||
354ce4a4
WYG		 648 (uart_msg->frame3 & (BT_UART_MSG_FRAME3SCOESCO_MSK |
649 BT_UART_MSG_FRAME3SNIFF_MSK | BT_UART_MSG_FRAME3A2DP_MSK)) ||
650 !(uart_msg->frame3 & (BT_UART_MSG_FRAME3ACL_MSK |
651 BT_UART_MSG_FRAME3OBEX_MSK)))) {
652 /* disable reduced tx power */
653 priv->reduced_txpower = false;
f6be8b78 654 priv->bt_valid |= IWLAGN_BT_VALID_REDUCED_TX_PWR;
354ce4a4 655 need_update = true;
b6e116e8 656 }
354ce4a4
WYG		 657
658 return need_update;
b6e116e8
WYG		 659}
660
247c61d6 661int iwlagn_bt_coex_profile_notif(struct iwl_priv *priv,
48a2d66f 662 struct iwl_rx_cmd_buffer *rxb,
247c61d6 663 struct iwl_device_cmd *cmd)
b6e116e8 664{
b6e116e8 665 struct iwl_rx_packet *pkt = rxb_addr(rxb);
f8d7c1a1 666 struct iwl_bt_coex_profile_notif *coex = (void *)pkt->data;
b6e116e8 667 struct iwl_bt_uart_msg *uart_msg = &coex->last_bt_uart_msg;
b6e116e8 668
c4197c62
WYG		 669 if (priv->bt_enable_flag == IWLAGN_BT_FLAG_COEX_MODE_DISABLED) {
670 /* bt coex disabled */
247c61d6 671 return 0;
c4197c62
WYG		 672 }
673
fa7f1413
WYG		 674 IWL_DEBUG_COEX(priv, "BT Coex notification:\n");
675 IWL_DEBUG_COEX(priv, " status: %d\n", coex->bt_status);
676 IWL_DEBUG_COEX(priv, " traffic load: %d\n", coex->bt_traffic_load);
677 IWL_DEBUG_COEX(priv, " CI compliance: %d\n",
b6e116e8
WYG		 678 coex->bt_ci_compliance);
679 iwlagn_print_uartmsg(priv, uart_msg);
680
66e863a5 681 priv->last_bt_traffic_load = priv->bt_traffic_load;
207ecc5e
MV		 682 priv->bt_is_sco = iwlagn_bt_traffic_is_sco(uart_msg);
683
b6e116e8
WYG		 684 if (priv->iw_mode != NL80211_IFTYPE_ADHOC) {
685 if (priv->bt_status != coex->bt_status ||
66e863a5 686 priv->last_bt_traffic_load != coex->bt_traffic_load) {
b6e116e8
WYG		 687 if (coex->bt_status) {
688 /* BT on */
689 if (!priv->bt_ch_announce)
690 priv->bt_traffic_load =
691 IWL_BT_COEX_TRAFFIC_LOAD_HIGH;
692 else
693 priv->bt_traffic_load =
694 coex->bt_traffic_load;
695 } else {
696 /* BT off */
697 priv->bt_traffic_load =
698 IWL_BT_COEX_TRAFFIC_LOAD_NONE;
699 }
700 priv->bt_status = coex->bt_status;
1ee158d8 701 queue_work(priv->workqueue,
b6e116e8
WYG		 702 &priv->bt_traffic_change_work);
703 }
b6e116e8
WYG		 704 }
705
354ce4a4 706 /* schedule to send runtime bt_config */
9dc4ca92
WYG		 707 /* check reduce power before change ack/cts kill mask */
708 if (iwlagn_fill_txpower_mode(priv, uart_msg) ||
709 iwlagn_set_kill_msk(priv, uart_msg))
354ce4a4
WYG		 710 queue_work(priv->workqueue, &priv->bt_runtime_config);
711
b6e116e8
WYG		 712
713 /* FIXME: based on notification, adjust the prio_boost */
714
b6e116e8 715 priv->bt_ci_compliance = coex->bt_ci_compliance;
247c61d6 716 return 0;
b6e116e8
WYG		 717}
718
719void iwlagn_bt_rx_handler_setup(struct iwl_priv *priv)
720{
b6e116e8
WYG		 721 priv->rx_handlers[REPLY_BT_COEX_PROFILE_NOTIF] =
722 iwlagn_bt_coex_profile_notif;
723}
724
725void iwlagn_bt_setup_deferred_work(struct iwl_priv *priv)
726{
b6e116e8
WYG		 727 INIT_WORK(&priv->bt_traffic_change_work,
728 iwlagn_bt_traffic_change_work);
729}
730
731void iwlagn_bt_cancel_deferred_work(struct iwl_priv *priv)
732{
733 cancel_work_sync(&priv->bt_traffic_change_work);
734}
5de33068
JB		 735
736static bool is_single_rx_stream(struct iwl_priv *priv)
737{
738 return priv->current_ht_config.smps == IEEE80211_SMPS_STATIC ||
739 priv->current_ht_config.single_chain_sufficient;
740}
741
742#define IWL_NUM_RX_CHAINS_MULTIPLE 3
743#define IWL_NUM_RX_CHAINS_SINGLE 2
744#define IWL_NUM_IDLE_CHAINS_DUAL 2
745#define IWL_NUM_IDLE_CHAINS_SINGLE 1
746
747/*
748 * Determine how many receiver/antenna chains to use.
749 *
750 * More provides better reception via diversity. Fewer saves power
751 * at the expense of throughput, but only when not in powersave to
752 * start with.
753 *
754 * MIMO (dual stream) requires at least 2, but works better with 3.
755 * This does not determine *which* chains to use, just how many.
756 */
757static int iwl_get_active_rx_chain_count(struct iwl_priv *priv)
758{
2152268f
EG		 759 if (priv->cfg->bt_params &&
760 priv->cfg->bt_params->advanced_bt_coexist &&
5de33068
JB		 761 (priv->bt_full_concurrent ||
762 priv->bt_traffic_load >= IWL_BT_COEX_TRAFFIC_LOAD_HIGH)) {
763 /*
764 * only use chain 'A' in bt high traffic load or
765 * full concurrency mode
766 */
767 return IWL_NUM_RX_CHAINS_SINGLE;
768 }
769 /* # of Rx chains to use when expecting MIMO. */
770 if (is_single_rx_stream(priv))
771 return IWL_NUM_RX_CHAINS_SINGLE;
772 else
773 return IWL_NUM_RX_CHAINS_MULTIPLE;
774}
775
776/*
777 * When we are in power saving mode, unless device support spatial
778 * multiplexing power save, use the active count for rx chain count.
779 */
780static int iwl_get_idle_rx_chain_count(struct iwl_priv *priv, int active_cnt)
781{
782 /* # Rx chains when idling, depending on SMPS mode */
783 switch (priv->current_ht_config.smps) {
784 case IEEE80211_SMPS_STATIC:
785 case IEEE80211_SMPS_DYNAMIC:
786 return IWL_NUM_IDLE_CHAINS_SINGLE;
b2ccccdc 787 case IEEE80211_SMPS_AUTOMATIC:
5de33068
JB		 788 case IEEE80211_SMPS_OFF:
789 return active_cnt;
790 default:
791 WARN(1, "invalid SMPS mode %d",
792 priv->current_ht_config.smps);
793 return active_cnt;
794 }
795}
796
797/* up to 4 chains */
798static u8 iwl_count_chain_bitmap(u32 chain_bitmap)
799{
800 u8 res;
801 res = (chain_bitmap & BIT(0)) >> 0;
802 res += (chain_bitmap & BIT(1)) >> 1;
803 res += (chain_bitmap & BIT(2)) >> 2;
804 res += (chain_bitmap & BIT(3)) >> 3;
805 return res;
806}
807
808/**
809 * iwlagn_set_rxon_chain - Set up Rx chain usage in "staging" RXON image
810 *
811 * Selects how many and which Rx receivers/antennas/chains to use.
812 * This should not be used for scan command ... it puts data in wrong place.
813 */
814void iwlagn_set_rxon_chain(struct iwl_priv *priv, struct iwl_rxon_context *ctx)
815{
816 bool is_single = is_single_rx_stream(priv);
47107e84 817 bool is_cam = !test_bit(STATUS_POWER_PMI, &priv->status);
5de33068
JB		 818 u8 idle_rx_cnt, active_rx_cnt, valid_rx_cnt;
819 u32 active_chains;
820 u16 rx_chain;
821
822 /* Tell uCode which antennas are actually connected.
823 * Before first association, we assume all antennas are connected.
824 * Just after first association, iwl_chain_noise_calibration()
825 * checks which antennas actually *are* connected. */
826 if (priv->chain_noise_data.active_chains)
827 active_chains = priv->chain_noise_data.active_chains;
828 else
26a7ca9a 829 active_chains = priv->eeprom_data->valid_rx_ant;
5de33068 830
2152268f
EG		 831 if (priv->cfg->bt_params &&
832 priv->cfg->bt_params->advanced_bt_coexist &&
5de33068
JB		 833 (priv->bt_full_concurrent ||
834 priv->bt_traffic_load >= IWL_BT_COEX_TRAFFIC_LOAD_HIGH)) {
835 /*
836 * only use chain 'A' in bt high traffic load or
837 * full concurrency mode
838 */
839 active_chains = first_antenna(active_chains);
840 }
841
842 rx_chain = active_chains << RXON_RX_CHAIN_VALID_POS;
843
844 /* How many receivers should we use? */
845 active_rx_cnt = iwl_get_active_rx_chain_count(priv);
846 idle_rx_cnt = iwl_get_idle_rx_chain_count(priv, active_rx_cnt);
847
848
849 /* correct rx chain count according hw settings
850 * and chain noise calibration
851 */
852 valid_rx_cnt = iwl_count_chain_bitmap(active_chains);
853 if (valid_rx_cnt < active_rx_cnt)
854 active_rx_cnt = valid_rx_cnt;
855
856 if (valid_rx_cnt < idle_rx_cnt)
857 idle_rx_cnt = valid_rx_cnt;
858
859 rx_chain |= active_rx_cnt << RXON_RX_CHAIN_MIMO_CNT_POS;
860 rx_chain |= idle_rx_cnt << RXON_RX_CHAIN_CNT_POS;
861
862 ctx->staging.rx_chain = cpu_to_le16(rx_chain);
863
864 if (!is_single && (active_rx_cnt >= IWL_NUM_RX_CHAINS_SINGLE) && is_cam)
865 ctx->staging.rx_chain |= RXON_RX_CHAIN_MIMO_FORCE_MSK;
866 else
867 ctx->staging.rx_chain &= ~RXON_RX_CHAIN_MIMO_FORCE_MSK;
868
869 IWL_DEBUG_ASSOC(priv, "rx_chain=0x%X active=%d idle=%d\n",
870 ctx->staging.rx_chain,
871 active_rx_cnt, idle_rx_cnt);
872
873 WARN_ON(active_rx_cnt == 0 || idle_rx_cnt == 0 ||
874 active_rx_cnt < idle_rx_cnt);
875}
facd982e
JB		 876
877u8 iwl_toggle_tx_ant(struct iwl_priv *priv, u8 ant, u8 valid)
878{
879 int i;
880 u8 ind = ant;
881
882 if (priv->band == IEEE80211_BAND_2GHZ &&
883 priv->bt_traffic_load >= IWL_BT_COEX_TRAFFIC_LOAD_HIGH)
884 return 0;
885
886 for (i = 0; i < RATE_ANT_NUM - 1; i++) {
887 ind = (ind + 1) < RATE_ANT_NUM ? ind + 1 : 0;
888 if (valid & BIT(ind))
889 return ind;
890 }
891 return ant;
892}
fed73292 893
023ca58f
WYG		 894#ifdef CONFIG_PM_SLEEP
895static void iwlagn_convert_p1k(u16 *p1k, __le16 *out)
896{
897 int i;
898
899 for (i = 0; i < IWLAGN_P1K_SIZE; i++)
900 out[i] = cpu_to_le16(p1k[i]);
901}
902
903struct wowlan_key_data {
904 struct iwl_rxon_context *ctx;
905 struct iwlagn_wowlan_rsc_tsc_params_cmd *rsc_tsc;
906 struct iwlagn_wowlan_tkip_params_cmd *tkip;
907 const u8 *bssid;
908 bool error, use_rsc_tsc, use_tkip;
909};
910
911
912static void iwlagn_wowlan_program_keys(struct ieee80211_hw *hw,
913 struct ieee80211_vif *vif,
914 struct ieee80211_sta *sta,
915 struct ieee80211_key_conf *key,
916 void *_data)
917{
d0f76d68 918 struct iwl_priv *priv = IWL_MAC80211_GET_DVM(hw);
023ca58f
WYG		 919 struct wowlan_key_data *data = _data;
920 struct iwl_rxon_context *ctx = data->ctx;
921 struct aes_sc *aes_sc, *aes_tx_sc = NULL;
922 struct tkip_sc *tkip_sc, *tkip_tx_sc = NULL;
923 struct iwlagn_p1k_cache *rx_p1ks;
924 u8 *rx_mic_key;
925 struct ieee80211_key_seq seq;
926 u32 cur_rx_iv32 = 0;
927 u16 p1k[IWLAGN_P1K_SIZE];
928 int ret, i;
929
b1eea297 930 mutex_lock(&priv->mutex);
023ca58f
WYG		 931
932 if ((key->cipher == WLAN_CIPHER_SUITE_WEP40 ||
933 key->cipher == WLAN_CIPHER_SUITE_WEP104) &&
934 !sta && !ctx->key_mapping_keys)
935 ret = iwl_set_default_wep_key(priv, ctx, key);
936 else
937 ret = iwl_set_dynamic_key(priv, ctx, key, sta);
938
939 if (ret) {
940 IWL_ERR(priv, "Error setting key during suspend!\n");
941 data->error = true;
942 }
943
944 switch (key->cipher) {
945 case WLAN_CIPHER_SUITE_TKIP:
946 if (sta) {
947 tkip_sc = data->rsc_tsc->all_tsc_rsc.tkip.unicast_rsc;
948 tkip_tx_sc = &data->rsc_tsc->all_tsc_rsc.tkip.tsc;
949
950 rx_p1ks = data->tkip->rx_uni;
951
952 ieee80211_get_key_tx_seq(key, &seq);
953 tkip_tx_sc->iv16 = cpu_to_le16(seq.tkip.iv16);
954 tkip_tx_sc->iv32 = cpu_to_le32(seq.tkip.iv32);
955
956 ieee80211_get_tkip_p1k_iv(key, seq.tkip.iv32, p1k);
957 iwlagn_convert_p1k(p1k, data->tkip->tx.p1k);
958
959 memcpy(data->tkip->mic_keys.tx,
960 &key->key[NL80211_TKIP_DATA_OFFSET_TX_MIC_KEY],
961 IWLAGN_MIC_KEY_SIZE);
962
963 rx_mic_key = data->tkip->mic_keys.rx_unicast;
964 } else {
965 tkip_sc =
966 data->rsc_tsc->all_tsc_rsc.tkip.multicast_rsc;
967 rx_p1ks = data->tkip->rx_multi;
968 rx_mic_key = data->tkip->mic_keys.rx_mcast;
969 }
970
971 /*
972 * For non-QoS this relies on the fact that both the uCode and
973 * mac80211 use TID 0 (as they need to to avoid replay attacks)
974 * for checking the IV in the frames.
975 */
976 for (i = 0; i < IWLAGN_NUM_RSC; i++) {
977 ieee80211_get_key_rx_seq(key, i, &seq);
978 tkip_sc[i].iv16 = cpu_to_le16(seq.tkip.iv16);
979 tkip_sc[i].iv32 = cpu_to_le32(seq.tkip.iv32);
980 /* wrapping isn't allowed, AP must rekey */
981 if (seq.tkip.iv32 > cur_rx_iv32)
982 cur_rx_iv32 = seq.tkip.iv32;
983 }
984
985 ieee80211_get_tkip_rx_p1k(key, data->bssid, cur_rx_iv32, p1k);
986 iwlagn_convert_p1k(p1k, rx_p1ks[0].p1k);
987 ieee80211_get_tkip_rx_p1k(key, data->bssid,
988 cur_rx_iv32 + 1, p1k);
989 iwlagn_convert_p1k(p1k, rx_p1ks[1].p1k);
990
991 memcpy(rx_mic_key,
992 &key->key[NL80211_TKIP_DATA_OFFSET_RX_MIC_KEY],
993 IWLAGN_MIC_KEY_SIZE);
994
995 data->use_tkip = true;
996 data->use_rsc_tsc = true;
997 break;
998 case WLAN_CIPHER_SUITE_CCMP:
999 if (sta) {
1000 u8 *pn = seq.ccmp.pn;
1001
1002 aes_sc = data->rsc_tsc->all_tsc_rsc.aes.unicast_rsc;
1003 aes_tx_sc = &data->rsc_tsc->all_tsc_rsc.aes.tsc;
1004
1005 ieee80211_get_key_tx_seq(key, &seq);
1006 aes_tx_sc->pn = cpu_to_le64(
1007 (u64)pn[5] |
1008 ((u64)pn[4] << 8) |
1009 ((u64)pn[3] << 16) |
1010 ((u64)pn[2] << 24) |
1011 ((u64)pn[1] << 32) |
1012 ((u64)pn[0] << 40));
1013 } else
1014 aes_sc = data->rsc_tsc->all_tsc_rsc.aes.multicast_rsc;
1015
1016 /*
1017 * For non-QoS this relies on the fact that both the uCode and
1018 * mac80211 use TID 0 for checking the IV in the frames.
1019 */
1020 for (i = 0; i < IWLAGN_NUM_RSC; i++) {
1021 u8 *pn = seq.ccmp.pn;
1022
1023 ieee80211_get_key_rx_seq(key, i, &seq);
1024 aes_sc->pn = cpu_to_le64(
1025 (u64)pn[5] |
1026 ((u64)pn[4] << 8) |
1027 ((u64)pn[3] << 16) |
1028 ((u64)pn[2] << 24) |
1029 ((u64)pn[1] << 32) |
1030 ((u64)pn[0] << 40));
1031 }
1032 data->use_rsc_tsc = true;
1033 break;
1034 }
1035
b1eea297 1036 mutex_unlock(&priv->mutex);
023ca58f
WYG		 1037}
1038
1039int iwlagn_send_patterns(struct iwl_priv *priv,
1040 struct cfg80211_wowlan *wowlan)
1041{
1042 struct iwlagn_wowlan_patterns_cmd *pattern_cmd;
1043 struct iwl_host_cmd cmd = {
1044 .id = REPLY_WOWLAN_PATTERNS,
1045 .dataflags[0] = IWL_HCMD_DFL_NOCOPY,
1046 .flags = CMD_SYNC,
1047 };
1048 int i, err;
1049
1050 if (!wowlan->n_patterns)
1051 return 0;
1052
1053 cmd.len[0] = sizeof(*pattern_cmd) +
1054 wowlan->n_patterns * sizeof(struct iwlagn_wowlan_pattern);
1055
1056 pattern_cmd = kmalloc(cmd.len[0], GFP_KERNEL);
1057 if (!pattern_cmd)
1058 return -ENOMEM;
1059
1060 pattern_cmd->n_patterns = cpu_to_le32(wowlan->n_patterns);
1061
1062 for (i = 0; i < wowlan->n_patterns; i++) {
1063 int mask_len = DIV_ROUND_UP(wowlan->patterns[i].pattern_len, 8);
1064
1065 memcpy(&pattern_cmd->patterns[i].mask,
1066 wowlan->patterns[i].mask, mask_len);
1067 memcpy(&pattern_cmd->patterns[i].pattern,
1068 wowlan->patterns[i].pattern,
1069 wowlan->patterns[i].pattern_len);
1070 pattern_cmd->patterns[i].mask_size = mask_len;
1071 pattern_cmd->patterns[i].pattern_size =
1072 wowlan->patterns[i].pattern_len;
1073 }
1074
1075 cmd.data[0] = pattern_cmd;
e10a0533 1076 err = iwl_dvm_send_cmd(priv, &cmd);
023ca58f
WYG		 1077 kfree(pattern_cmd);
1078 return err;
1079}
1080
ea886a60 1081int iwlagn_suspend(struct iwl_priv *priv, struct cfg80211_wowlan *wowlan)
023ca58f
WYG		 1082{
1083 struct iwlagn_wowlan_wakeup_filter_cmd wakeup_filter_cmd;
1084 struct iwl_rxon_cmd rxon;
1085 struct iwl_rxon_context *ctx = &priv->contexts[IWL_RXON_CTX_BSS];
1086 struct iwlagn_wowlan_kek_kck_material_cmd kek_kck_cmd;
1087 struct iwlagn_wowlan_tkip_params_cmd tkip_cmd = {};
1088 struct iwlagn_d3_config_cmd d3_cfg_cmd = {};
1089 struct wowlan_key_data key_data = {
1090 .ctx = ctx,
1091 .bssid = ctx->active.bssid_addr,
1092 .use_rsc_tsc = false,
1093 .tkip = &tkip_cmd,
1094 .use_tkip = false,
1095 };
1096 int ret, i;
1097 u16 seq;
1098
1099 key_data.rsc_tsc = kzalloc(sizeof(*key_data.rsc_tsc), GFP_KERNEL);
1100 if (!key_data.rsc_tsc)
1101 return -ENOMEM;
1102
1103 memset(&wakeup_filter_cmd, 0, sizeof(wakeup_filter_cmd));
1104
1105 /*
1106 * We know the last used seqno, and the uCode expects to know that
1107 * one, it will increment before TX.
1108 */
1109 seq = le16_to_cpu(priv->last_seq_ctl) & IEEE80211_SCTL_SEQ;
1110 wakeup_filter_cmd.non_qos_seq = cpu_to_le16(seq);
1111
1112 /*
1113 * For QoS counters, we store the one to use next, so subtract 0x10
1114 * since the uCode will add 0x10 before using the value.
1115 */
e0467a30 1116 for (i = 0; i < IWL_MAX_TID_COUNT; i++) {
04cf6824 1117 seq = priv->tid_data[IWL_AP_ID][i].seq_number;
023ca58f
WYG		 1118 seq -= 0x10;
1119 wakeup_filter_cmd.qos_seq[i] = cpu_to_le16(seq);
1120 }
1121
1122 if (wowlan->disconnect)
1123 wakeup_filter_cmd.enabled |=
1124 cpu_to_le32(IWLAGN_WOWLAN_WAKEUP_BEACON_MISS |
1125 IWLAGN_WOWLAN_WAKEUP_LINK_CHANGE);
1126 if (wowlan->magic_pkt)
1127 wakeup_filter_cmd.enabled |=
1128 cpu_to_le32(IWLAGN_WOWLAN_WAKEUP_MAGIC_PACKET);
1129 if (wowlan->gtk_rekey_failure)
1130 wakeup_filter_cmd.enabled |=
1131 cpu_to_le32(IWLAGN_WOWLAN_WAKEUP_GTK_REKEY_FAIL);
1132 if (wowlan->eap_identity_req)
1133 wakeup_filter_cmd.enabled |=
1134 cpu_to_le32(IWLAGN_WOWLAN_WAKEUP_EAP_IDENT_REQ);
1135 if (wowlan->four_way_handshake)
1136 wakeup_filter_cmd.enabled |=
1137 cpu_to_le32(IWLAGN_WOWLAN_WAKEUP_4WAY_HANDSHAKE);
1138 if (wowlan->n_patterns)
1139 wakeup_filter_cmd.enabled |=
1140 cpu_to_le32(IWLAGN_WOWLAN_WAKEUP_PATTERN_MATCH);
1141
1142 if (wowlan->rfkill_release)
1143 d3_cfg_cmd.wakeup_flags |=
1144 cpu_to_le32(IWLAGN_D3_WAKEUP_RFKILL);
1145
1146 iwl_scan_cancel_timeout(priv, 200);
1147
1148 memcpy(&rxon, &ctx->active, sizeof(rxon));
1149
8f7ffbe2 1150 priv->ucode_loaded = false;
68e8dfda 1151 iwl_trans_stop_device(priv->trans);
023ca58f 1152
15b86bff 1153 priv->wowlan = true;
023ca58f 1154
e1991885 1155 ret = iwl_load_ucode_wait_alive(priv, IWL_UCODE_WOWLAN);
023ca58f
WYG		 1156 if (ret)
1157 goto out;
1158
1159 /* now configure WoWLAN ucode */
1160 ret = iwl_alive_start(priv);
1161 if (ret)
1162 goto out;
1163
1164 memcpy(&ctx->staging, &rxon, sizeof(rxon));
1165 ret = iwlagn_commit_rxon(priv, ctx);
1166 if (ret)
1167 goto out;
1168
1169 ret = iwl_power_update_mode(priv, true);
1170 if (ret)
1171 goto out;
1172
65de7e84 1173 if (!iwlwifi_mod_params.sw_crypto) {
023ca58f
WYG		 1174 /* mark all keys clear */
1175 priv->ucode_key_table = 0;
1176 ctx->key_mapping_keys = 0;
1177
1178 /*
1179 * This needs to be unlocked due to lock ordering
1180 * constraints. Since we're in the suspend path
1181 * that isn't really a problem though.
1182 */
b1eea297 1183 mutex_unlock(&priv->mutex);
023ca58f
WYG		 1184 ieee80211_iter_keys(priv->hw, ctx->vif,
1185 iwlagn_wowlan_program_keys,
1186 &key_data);
b1eea297 1187 mutex_lock(&priv->mutex);
023ca58f
WYG		 1188 if (key_data.error) {
1189 ret = -EIO;
1190 goto out;
1191 }
1192
1193 if (key_data.use_rsc_tsc) {
1194 struct iwl_host_cmd rsc_tsc_cmd = {
1195 .id = REPLY_WOWLAN_TSC_RSC_PARAMS,
1196 .flags = CMD_SYNC,
1197 .data[0] = key_data.rsc_tsc,
1198 .dataflags[0] = IWL_HCMD_DFL_NOCOPY,
182ada1c 1199 .len[0] = sizeof(*key_data.rsc_tsc),
023ca58f
WYG		 1200 };
1201
e10a0533 1202 ret = iwl_dvm_send_cmd(priv, &rsc_tsc_cmd);
023ca58f
WYG		 1203 if (ret)
1204 goto out;
1205 }
1206
1207 if (key_data.use_tkip) {
e10a0533 1208 ret = iwl_dvm_send_cmd_pdu(priv,
023ca58f
WYG		 1209 REPLY_WOWLAN_TKIP_PARAMS,
1210 CMD_SYNC, sizeof(tkip_cmd),
1211 &tkip_cmd);
1212 if (ret)
1213 goto out;
1214 }
1215
1216 if (priv->have_rekey_data) {
1217 memset(&kek_kck_cmd, 0, sizeof(kek_kck_cmd));
1218 memcpy(kek_kck_cmd.kck, priv->kck, NL80211_KCK_LEN);
1219 kek_kck_cmd.kck_len = cpu_to_le16(NL80211_KCK_LEN);
1220 memcpy(kek_kck_cmd.kek, priv->kek, NL80211_KEK_LEN);
1221 kek_kck_cmd.kek_len = cpu_to_le16(NL80211_KEK_LEN);
1222 kek_kck_cmd.replay_ctr = priv->replay_ctr;
1223
e10a0533 1224 ret = iwl_dvm_send_cmd_pdu(priv,
023ca58f
WYG		 1225 REPLY_WOWLAN_KEK_KCK_MATERIAL,
1226 CMD_SYNC, sizeof(kek_kck_cmd),
1227 &kek_kck_cmd);
1228 if (ret)
1229 goto out;
1230 }
1231 }
1232
e10a0533 1233 ret = iwl_dvm_send_cmd_pdu(priv, REPLY_D3_CONFIG, CMD_SYNC,
023ca58f
WYG		 1234 sizeof(d3_cfg_cmd), &d3_cfg_cmd);
1235 if (ret)
1236 goto out;
1237
e10a0533 1238 ret = iwl_dvm_send_cmd_pdu(priv, REPLY_WOWLAN_WAKEUP_FILTER,
023ca58f
WYG		 1239 CMD_SYNC, sizeof(wakeup_filter_cmd),
1240 &wakeup_filter_cmd);
1241 if (ret)
1242 goto out;
1243
1244 ret = iwlagn_send_patterns(priv, wowlan);
1245 out:
1246 kfree(key_data.rsc_tsc);
1247 return ret;
1248}
1249#endif
e10a0533
JB		 1250
1251int iwl_dvm_send_cmd(struct iwl_priv *priv, struct iwl_host_cmd *cmd)
1252{
83626404 1253 if (iwl_is_rfkill(priv) || iwl_is_ctkill(priv)) {
721c32f7 1254 IWL_WARN(priv, "Not sending command - %s KILL\n",
83626404 1255 iwl_is_rfkill(priv) ? "RF" : "CT");
721c32f7
JB		 1256 return -EIO;
1257 }
1258
17acd0b6
DF		 1259 if (test_bit(STATUS_FW_ERROR, &priv->status)) {
1260 IWL_ERR(priv, "Command %s failed: FW Error\n",
d9fb6465 1261 iwl_dvm_get_cmd_string(cmd->id));
17acd0b6
DF		 1262 return -EIO;
1263 }
1264
2cc39c94
JB		 1265 /*
1266 * Synchronous commands from this op-mode must hold
1267 * the mutex, this ensures we don't try to send two
1268 * (or more) synchronous commands at a time.
1269 */
f609607c 1270 if (!(cmd->flags & CMD_ASYNC))
b1eea297 1271 lockdep_assert_held(&priv->mutex);
2cc39c94 1272
947a9407
JB		 1273 if (priv->ucode_owner == IWL_OWNERSHIP_TM &&
1274 !(cmd->flags & CMD_ON_DEMAND)) {
1275 IWL_DEBUG_HC(priv, "tm own the uCode, no regular hcmd send\n");
1276 return -EIO;
1277 }
1278
68e8dfda 1279 return iwl_trans_send_cmd(priv->trans, cmd);
e10a0533
JB		 1280}
1281
1282int iwl_dvm_send_cmd_pdu(struct iwl_priv *priv, u8 id,
1283 u32 flags, u16 len, const void *data)
1284{
1285 struct iwl_host_cmd cmd = {
1286 .id = id,
1287 .len = { len, },
1288 .data = { data, },
1289 .flags = flags,
1290 };
1291
1292 return iwl_dvm_send_cmd(priv, &cmd);
1293}
Linux kernel - Deliverables
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