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[karo-tx-linux.git] / drivers / net / wireless / iwlwifi / dvm / lib.c
1 /******************************************************************************
2  *
3  * GPL LICENSE SUMMARY
4  *
5  * Copyright(c) 2008 - 2014 Intel Corporation. All rights reserved.
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 COPYING.
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  *****************************************************************************/
29 #include <linux/etherdevice.h>
30 #include <linux/kernel.h>
31 #include <linux/module.h>
32 #include <linux/sched.h>
33 #include <net/mac80211.h>
34
35 #include "iwl-io.h"
36 #include "iwl-agn-hw.h"
37 #include "iwl-trans.h"
38 #include "iwl-modparams.h"
39
40 #include "dev.h"
41 #include "agn.h"
42
43 int iwlagn_hw_valid_rtc_data_addr(u32 addr)
44 {
45         return (addr >= IWLAGN_RTC_DATA_LOWER_BOUND) &&
46                 (addr < IWLAGN_RTC_DATA_UPPER_BOUND);
47 }
48
49 int iwlagn_send_tx_power(struct iwl_priv *priv)
50 {
51         struct iwlagn_tx_power_dbm_cmd tx_power_cmd;
52         u8 tx_ant_cfg_cmd;
53
54         if (WARN_ONCE(test_bit(STATUS_SCAN_HW, &priv->status),
55                       "TX Power requested while scanning!\n"))
56                 return -EAGAIN;
57
58         /* half dBm need to multiply */
59         tx_power_cmd.global_lmt = (s8)(2 * priv->tx_power_user_lmt);
60
61         if (tx_power_cmd.global_lmt > priv->nvm_data->max_tx_pwr_half_dbm) {
62                 /*
63                  * For the newer devices which using enhanced/extend tx power
64                  * table in EEPROM, the format is in half dBm. driver need to
65                  * convert to dBm format before report to mac80211.
66                  * By doing so, there is a possibility of 1/2 dBm resolution
67                  * lost. driver will perform "round-up" operation before
68                  * reporting, but it will cause 1/2 dBm tx power over the
69                  * regulatory limit. Perform the checking here, if the
70                  * "tx_power_user_lmt" is higher than EEPROM value (in
71                  * half-dBm format), lower the tx power based on EEPROM
72                  */
73                 tx_power_cmd.global_lmt =
74                         priv->nvm_data->max_tx_pwr_half_dbm;
75         }
76         tx_power_cmd.flags = IWLAGN_TX_POWER_NO_CLOSED;
77         tx_power_cmd.srv_chan_lmt = IWLAGN_TX_POWER_AUTO;
78
79         if (IWL_UCODE_API(priv->fw->ucode_ver) == 1)
80                 tx_ant_cfg_cmd = REPLY_TX_POWER_DBM_CMD_V1;
81         else
82                 tx_ant_cfg_cmd = REPLY_TX_POWER_DBM_CMD;
83
84         return iwl_dvm_send_cmd_pdu(priv, tx_ant_cfg_cmd, 0,
85                         sizeof(tx_power_cmd), &tx_power_cmd);
86 }
87
88 void iwlagn_temperature(struct iwl_priv *priv)
89 {
90         lockdep_assert_held(&priv->statistics.lock);
91
92         /* store temperature from correct statistics (in Celsius) */
93         priv->temperature = le32_to_cpu(priv->statistics.common.temperature);
94         iwl_tt_handler(priv);
95 }
96
97 int iwlagn_hwrate_to_mac80211_idx(u32 rate_n_flags, enum ieee80211_band band)
98 {
99         int idx = 0;
100         int band_offset = 0;
101
102         /* HT rate format: mac80211 wants an MCS number, which is just LSB */
103         if (rate_n_flags & RATE_MCS_HT_MSK) {
104                 idx = (rate_n_flags & 0xff);
105                 return idx;
106         /* Legacy rate format, search for match in table */
107         } else {
108                 if (band == IEEE80211_BAND_5GHZ)
109                         band_offset = IWL_FIRST_OFDM_RATE;
110                 for (idx = band_offset; idx < IWL_RATE_COUNT_LEGACY; idx++)
111                         if (iwl_rates[idx].plcp == (rate_n_flags & 0xFF))
112                                 return idx - band_offset;
113         }
114
115         return -1;
116 }
117
118 int iwlagn_manage_ibss_station(struct iwl_priv *priv,
119                                struct ieee80211_vif *vif, bool add)
120 {
121         struct iwl_vif_priv *vif_priv = (void *)vif->drv_priv;
122
123         if (add)
124                 return iwlagn_add_bssid_station(priv, vif_priv->ctx,
125                                                 vif->bss_conf.bssid,
126                                                 &vif_priv->ibss_bssid_sta_id);
127         return iwl_remove_station(priv, vif_priv->ibss_bssid_sta_id,
128                                   vif->bss_conf.bssid);
129 }
130
131 /**
132  * iwlagn_txfifo_flush: send REPLY_TXFIFO_FLUSH command to uCode
133  *
134  * pre-requirements:
135  *  1. acquire mutex before calling
136  *  2. make sure rf is on and not in exit state
137  */
138 int iwlagn_txfifo_flush(struct iwl_priv *priv, u32 scd_q_msk)
139 {
140         struct iwl_txfifo_flush_cmd_v3 flush_cmd_v3 = {
141                 .flush_control = cpu_to_le16(IWL_DROP_ALL),
142         };
143         struct iwl_txfifo_flush_cmd_v2 flush_cmd_v2 = {
144                 .flush_control = cpu_to_le16(IWL_DROP_ALL),
145         };
146
147         u32 queue_control = IWL_SCD_VO_MSK | IWL_SCD_VI_MSK |
148                             IWL_SCD_BE_MSK | IWL_SCD_BK_MSK | IWL_SCD_MGMT_MSK;
149
150         if ((priv->valid_contexts != BIT(IWL_RXON_CTX_BSS)))
151                 queue_control |= IWL_PAN_SCD_VO_MSK | IWL_PAN_SCD_VI_MSK |
152                                  IWL_PAN_SCD_BE_MSK | IWL_PAN_SCD_BK_MSK |
153                                  IWL_PAN_SCD_MGMT_MSK |
154                                  IWL_PAN_SCD_MULTICAST_MSK;
155
156         if (priv->nvm_data->sku_cap_11n_enable)
157                 queue_control |= IWL_AGG_TX_QUEUE_MSK;
158
159         if (scd_q_msk)
160                 queue_control = scd_q_msk;
161
162         IWL_DEBUG_INFO(priv, "queue control: 0x%x\n", queue_control);
163         flush_cmd_v3.queue_control = cpu_to_le32(queue_control);
164         flush_cmd_v2.queue_control = cpu_to_le16((u16)queue_control);
165
166         if (IWL_UCODE_API(priv->fw->ucode_ver) > 2)
167                 return iwl_dvm_send_cmd_pdu(priv, REPLY_TXFIFO_FLUSH, 0,
168                                             sizeof(flush_cmd_v3),
169                                             &flush_cmd_v3);
170         return iwl_dvm_send_cmd_pdu(priv, REPLY_TXFIFO_FLUSH, 0,
171                                     sizeof(flush_cmd_v2), &flush_cmd_v2);
172 }
173
174 void iwlagn_dev_txfifo_flush(struct iwl_priv *priv)
175 {
176         mutex_lock(&priv->mutex);
177         ieee80211_stop_queues(priv->hw);
178         if (iwlagn_txfifo_flush(priv, 0)) {
179                 IWL_ERR(priv, "flush request fail\n");
180                 goto done;
181         }
182         IWL_DEBUG_INFO(priv, "wait transmit/flush all frames\n");
183         iwl_trans_wait_tx_queue_empty(priv->trans, 0xffffffff);
184 done:
185         ieee80211_wake_queues(priv->hw);
186         mutex_unlock(&priv->mutex);
187 }
188
189 /*
190  * BT coex
191  */
192 /* Notmal TDM */
193 static const __le32 iwlagn_def_3w_lookup[IWLAGN_BT_DECISION_LUT_SIZE] = {
194         cpu_to_le32(0xaaaaaaaa),
195         cpu_to_le32(0xaaaaaaaa),
196         cpu_to_le32(0xaeaaaaaa),
197         cpu_to_le32(0xaaaaaaaa),
198         cpu_to_le32(0xcc00ff28),
199         cpu_to_le32(0x0000aaaa),
200         cpu_to_le32(0xcc00aaaa),
201         cpu_to_le32(0x0000aaaa),
202         cpu_to_le32(0xc0004000),
203         cpu_to_le32(0x00004000),
204         cpu_to_le32(0xf0005000),
205         cpu_to_le32(0xf0005000),
206 };
207
208
209 /* Loose Coex */
210 static const __le32 iwlagn_loose_lookup[IWLAGN_BT_DECISION_LUT_SIZE] = {
211         cpu_to_le32(0xaaaaaaaa),
212         cpu_to_le32(0xaaaaaaaa),
213         cpu_to_le32(0xaeaaaaaa),
214         cpu_to_le32(0xaaaaaaaa),
215         cpu_to_le32(0xcc00ff28),
216         cpu_to_le32(0x0000aaaa),
217         cpu_to_le32(0xcc00aaaa),
218         cpu_to_le32(0x0000aaaa),
219         cpu_to_le32(0x00000000),
220         cpu_to_le32(0x00000000),
221         cpu_to_le32(0xf0005000),
222         cpu_to_le32(0xf0005000),
223 };
224
225 /* Full concurrency */
226 static const __le32 iwlagn_concurrent_lookup[IWLAGN_BT_DECISION_LUT_SIZE] = {
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(0xaaaaaaaa),
235         cpu_to_le32(0x00000000),
236         cpu_to_le32(0x00000000),
237         cpu_to_le32(0x00000000),
238         cpu_to_le32(0x00000000),
239 };
240
241 void iwlagn_send_advance_bt_config(struct iwl_priv *priv)
242 {
243         struct iwl_basic_bt_cmd basic = {
244                 .max_kill = IWLAGN_BT_MAX_KILL_DEFAULT,
245                 .bt3_timer_t7_value = IWLAGN_BT3_T7_DEFAULT,
246                 .bt3_prio_sample_time = IWLAGN_BT3_PRIO_SAMPLE_DEFAULT,
247                 .bt3_timer_t2_value = IWLAGN_BT3_T2_DEFAULT,
248         };
249         struct iwl_bt_cmd_v1 bt_cmd_v1;
250         struct iwl_bt_cmd_v2 bt_cmd_v2;
251         int ret;
252
253         BUILD_BUG_ON(sizeof(iwlagn_def_3w_lookup) !=
254                         sizeof(basic.bt3_lookup_table));
255
256         if (priv->lib->bt_params) {
257                 /*
258                  * newer generation of devices (2000 series and newer)
259                  * use the version 2 of the bt command
260                  * we need to make sure sending the host command
261                  * with correct data structure to avoid uCode assert
262                  */
263                 if (priv->lib->bt_params->bt_session_2) {
264                         bt_cmd_v2.prio_boost = cpu_to_le32(
265                                 priv->lib->bt_params->bt_prio_boost);
266                         bt_cmd_v2.tx_prio_boost = 0;
267                         bt_cmd_v2.rx_prio_boost = 0;
268                 } else {
269                         /* older version only has 8 bits */
270                         WARN_ON(priv->lib->bt_params->bt_prio_boost & ~0xFF);
271                         bt_cmd_v1.prio_boost =
272                                 priv->lib->bt_params->bt_prio_boost;
273                         bt_cmd_v1.tx_prio_boost = 0;
274                         bt_cmd_v1.rx_prio_boost = 0;
275                 }
276         } else {
277                 IWL_ERR(priv, "failed to construct BT Coex Config\n");
278                 return;
279         }
280
281         /*
282          * Possible situations when BT needs to take over for receive,
283          * at the same time where STA needs to response to AP's frame(s),
284          * reduce the tx power of the required response frames, by that,
285          * allow the concurrent BT receive & WiFi transmit
286          * (BT - ANT A, WiFi -ANT B), without interference to one another
287          *
288          * Reduced tx power apply to control frames only (ACK/Back/CTS)
289          * when indicated by the BT config command
290          */
291         basic.kill_ack_mask = priv->kill_ack_mask;
292         basic.kill_cts_mask = priv->kill_cts_mask;
293         if (priv->reduced_txpower)
294                 basic.reduce_txpower = IWLAGN_BT_REDUCED_TX_PWR;
295         basic.valid = priv->bt_valid;
296
297         /*
298          * Configure BT coex mode to "no coexistence" when the
299          * user disabled BT coexistence, we have no interface
300          * (might be in monitor mode), or the interface is in
301          * IBSS mode (no proper uCode support for coex then).
302          */
303         if (!iwlwifi_mod_params.bt_coex_active ||
304             priv->iw_mode == NL80211_IFTYPE_ADHOC) {
305                 basic.flags = IWLAGN_BT_FLAG_COEX_MODE_DISABLED;
306         } else {
307                 basic.flags = IWLAGN_BT_FLAG_COEX_MODE_3W <<
308                                         IWLAGN_BT_FLAG_COEX_MODE_SHIFT;
309
310                 if (!priv->bt_enable_pspoll)
311                         basic.flags |= IWLAGN_BT_FLAG_SYNC_2_BT_DISABLE;
312                 else
313                         basic.flags &= ~IWLAGN_BT_FLAG_SYNC_2_BT_DISABLE;
314
315                 if (priv->bt_ch_announce)
316                         basic.flags |= IWLAGN_BT_FLAG_CHANNEL_INHIBITION;
317                 IWL_DEBUG_COEX(priv, "BT coex flag: 0X%x\n", basic.flags);
318         }
319         priv->bt_enable_flag = basic.flags;
320         if (priv->bt_full_concurrent)
321                 memcpy(basic.bt3_lookup_table, iwlagn_concurrent_lookup,
322                         sizeof(iwlagn_concurrent_lookup));
323         else
324                 memcpy(basic.bt3_lookup_table, iwlagn_def_3w_lookup,
325                         sizeof(iwlagn_def_3w_lookup));
326
327         IWL_DEBUG_COEX(priv, "BT coex %s in %s mode\n",
328                        basic.flags ? "active" : "disabled",
329                        priv->bt_full_concurrent ?
330                        "full concurrency" : "3-wire");
331
332         if (priv->lib->bt_params->bt_session_2) {
333                 memcpy(&bt_cmd_v2.basic, &basic,
334                         sizeof(basic));
335                 ret = iwl_dvm_send_cmd_pdu(priv, REPLY_BT_CONFIG,
336                         0, sizeof(bt_cmd_v2), &bt_cmd_v2);
337         } else {
338                 memcpy(&bt_cmd_v1.basic, &basic,
339                         sizeof(basic));
340                 ret = iwl_dvm_send_cmd_pdu(priv, REPLY_BT_CONFIG,
341                         0, sizeof(bt_cmd_v1), &bt_cmd_v1);
342         }
343         if (ret)
344                 IWL_ERR(priv, "failed to send BT Coex Config\n");
345
346 }
347
348 void iwlagn_bt_adjust_rssi_monitor(struct iwl_priv *priv, bool rssi_ena)
349 {
350         struct iwl_rxon_context *ctx, *found_ctx = NULL;
351         bool found_ap = false;
352
353         lockdep_assert_held(&priv->mutex);
354
355         /* Check whether AP or GO mode is active. */
356         if (rssi_ena) {
357                 for_each_context(priv, ctx) {
358                         if (ctx->vif && ctx->vif->type == NL80211_IFTYPE_AP &&
359                             iwl_is_associated_ctx(ctx)) {
360                                 found_ap = true;
361                                 break;
362                         }
363                 }
364         }
365
366         /*
367          * If disable was received or If GO/AP mode, disable RSSI
368          * measurements.
369          */
370         if (!rssi_ena || found_ap) {
371                 if (priv->cur_rssi_ctx) {
372                         ctx = priv->cur_rssi_ctx;
373                         ieee80211_disable_rssi_reports(ctx->vif);
374                         priv->cur_rssi_ctx = NULL;
375                 }
376                 return;
377         }
378
379         /*
380          * If rssi measurements need to be enabled, consider all cases now.
381          * Figure out how many contexts are active.
382          */
383         for_each_context(priv, ctx) {
384                 if (ctx->vif && ctx->vif->type == NL80211_IFTYPE_STATION &&
385                     iwl_is_associated_ctx(ctx)) {
386                         found_ctx = ctx;
387                         break;
388                 }
389         }
390
391         /*
392          * rssi monitor already enabled for the correct interface...nothing
393          * to do.
394          */
395         if (found_ctx == priv->cur_rssi_ctx)
396                 return;
397
398         /*
399          * Figure out if rssi monitor is currently enabled, and needs
400          * to be changed. If rssi monitor is already enabled, disable
401          * it first else just enable rssi measurements on the
402          * interface found above.
403          */
404         if (priv->cur_rssi_ctx) {
405                 ctx = priv->cur_rssi_ctx;
406                 if (ctx->vif)
407                         ieee80211_disable_rssi_reports(ctx->vif);
408         }
409
410         priv->cur_rssi_ctx = found_ctx;
411
412         if (!found_ctx)
413                 return;
414
415         ieee80211_enable_rssi_reports(found_ctx->vif,
416                         IWLAGN_BT_PSP_MIN_RSSI_THRESHOLD,
417                         IWLAGN_BT_PSP_MAX_RSSI_THRESHOLD);
418 }
419
420 static bool iwlagn_bt_traffic_is_sco(struct iwl_bt_uart_msg *uart_msg)
421 {
422         return (BT_UART_MSG_FRAME3SCOESCO_MSK & uart_msg->frame3) >>
423                 BT_UART_MSG_FRAME3SCOESCO_POS;
424 }
425
426 static void iwlagn_bt_traffic_change_work(struct work_struct *work)
427 {
428         struct iwl_priv *priv =
429                 container_of(work, struct iwl_priv, bt_traffic_change_work);
430         struct iwl_rxon_context *ctx;
431         int smps_request = -1;
432
433         if (priv->bt_enable_flag == IWLAGN_BT_FLAG_COEX_MODE_DISABLED) {
434                 /* bt coex disabled */
435                 return;
436         }
437
438         /*
439          * Note: bt_traffic_load can be overridden by scan complete and
440          * coex profile notifications. Ignore that since only bad consequence
441          * can be not matching debug print with actual state.
442          */
443         IWL_DEBUG_COEX(priv, "BT traffic load changes: %d\n",
444                        priv->bt_traffic_load);
445
446         switch (priv->bt_traffic_load) {
447         case IWL_BT_COEX_TRAFFIC_LOAD_NONE:
448                 if (priv->bt_status)
449                         smps_request = IEEE80211_SMPS_DYNAMIC;
450                 else
451                         smps_request = IEEE80211_SMPS_AUTOMATIC;
452                 break;
453         case IWL_BT_COEX_TRAFFIC_LOAD_LOW:
454                 smps_request = IEEE80211_SMPS_DYNAMIC;
455                 break;
456         case IWL_BT_COEX_TRAFFIC_LOAD_HIGH:
457         case IWL_BT_COEX_TRAFFIC_LOAD_CONTINUOUS:
458                 smps_request = IEEE80211_SMPS_STATIC;
459                 break;
460         default:
461                 IWL_ERR(priv, "Invalid BT traffic load: %d\n",
462                         priv->bt_traffic_load);
463                 break;
464         }
465
466         mutex_lock(&priv->mutex);
467
468         /*
469          * We can not send command to firmware while scanning. When the scan
470          * complete we will schedule this work again. We do check with mutex
471          * locked to prevent new scan request to arrive. We do not check
472          * STATUS_SCANNING to avoid race when queue_work two times from
473          * different notifications, but quit and not perform any work at all.
474          */
475         if (test_bit(STATUS_SCAN_HW, &priv->status))
476                 goto out;
477
478         iwl_update_chain_flags(priv);
479
480         if (smps_request != -1) {
481                 priv->current_ht_config.smps = smps_request;
482                 for_each_context(priv, ctx) {
483                         if (ctx->vif && ctx->vif->type == NL80211_IFTYPE_STATION)
484                                 ieee80211_request_smps(ctx->vif, smps_request);
485                 }
486         }
487
488         /*
489          * Dynamic PS poll related functionality. Adjust RSSI measurements if
490          * necessary.
491          */
492         iwlagn_bt_coex_rssi_monitor(priv);
493 out:
494         mutex_unlock(&priv->mutex);
495 }
496
497 /*
498  * If BT sco traffic, and RSSI monitor is enabled, move measurements to the
499  * correct interface or disable it if this is the last interface to be
500  * removed.
501  */
502 void iwlagn_bt_coex_rssi_monitor(struct iwl_priv *priv)
503 {
504         if (priv->bt_is_sco &&
505             priv->bt_traffic_load == IWL_BT_COEX_TRAFFIC_LOAD_CONTINUOUS)
506                 iwlagn_bt_adjust_rssi_monitor(priv, true);
507         else
508                 iwlagn_bt_adjust_rssi_monitor(priv, false);
509 }
510
511 static void iwlagn_print_uartmsg(struct iwl_priv *priv,
512                                 struct iwl_bt_uart_msg *uart_msg)
513 {
514         IWL_DEBUG_COEX(priv, "Message Type = 0x%X, SSN = 0x%X, "
515                         "Update Req = 0x%X\n",
516                 (BT_UART_MSG_FRAME1MSGTYPE_MSK & uart_msg->frame1) >>
517                         BT_UART_MSG_FRAME1MSGTYPE_POS,
518                 (BT_UART_MSG_FRAME1SSN_MSK & uart_msg->frame1) >>
519                         BT_UART_MSG_FRAME1SSN_POS,
520                 (BT_UART_MSG_FRAME1UPDATEREQ_MSK & uart_msg->frame1) >>
521                         BT_UART_MSG_FRAME1UPDATEREQ_POS);
522
523         IWL_DEBUG_COEX(priv, "Open connections = 0x%X, Traffic load = 0x%X, "
524                         "Chl_SeqN = 0x%X, In band = 0x%X\n",
525                 (BT_UART_MSG_FRAME2OPENCONNECTIONS_MSK & uart_msg->frame2) >>
526                         BT_UART_MSG_FRAME2OPENCONNECTIONS_POS,
527                 (BT_UART_MSG_FRAME2TRAFFICLOAD_MSK & uart_msg->frame2) >>
528                         BT_UART_MSG_FRAME2TRAFFICLOAD_POS,
529                 (BT_UART_MSG_FRAME2CHLSEQN_MSK & uart_msg->frame2) >>
530                         BT_UART_MSG_FRAME2CHLSEQN_POS,
531                 (BT_UART_MSG_FRAME2INBAND_MSK & uart_msg->frame2) >>
532                         BT_UART_MSG_FRAME2INBAND_POS);
533
534         IWL_DEBUG_COEX(priv, "SCO/eSCO = 0x%X, Sniff = 0x%X, A2DP = 0x%X, "
535                         "ACL = 0x%X, Master = 0x%X, OBEX = 0x%X\n",
536                 (BT_UART_MSG_FRAME3SCOESCO_MSK & uart_msg->frame3) >>
537                         BT_UART_MSG_FRAME3SCOESCO_POS,
538                 (BT_UART_MSG_FRAME3SNIFF_MSK & uart_msg->frame3) >>
539                         BT_UART_MSG_FRAME3SNIFF_POS,
540                 (BT_UART_MSG_FRAME3A2DP_MSK & uart_msg->frame3) >>
541                         BT_UART_MSG_FRAME3A2DP_POS,
542                 (BT_UART_MSG_FRAME3ACL_MSK & uart_msg->frame3) >>
543                         BT_UART_MSG_FRAME3ACL_POS,
544                 (BT_UART_MSG_FRAME3MASTER_MSK & uart_msg->frame3) >>
545                         BT_UART_MSG_FRAME3MASTER_POS,
546                 (BT_UART_MSG_FRAME3OBEX_MSK & uart_msg->frame3) >>
547                         BT_UART_MSG_FRAME3OBEX_POS);
548
549         IWL_DEBUG_COEX(priv, "Idle duration = 0x%X\n",
550                 (BT_UART_MSG_FRAME4IDLEDURATION_MSK & uart_msg->frame4) >>
551                         BT_UART_MSG_FRAME4IDLEDURATION_POS);
552
553         IWL_DEBUG_COEX(priv, "Tx Activity = 0x%X, Rx Activity = 0x%X, "
554                         "eSCO Retransmissions = 0x%X\n",
555                 (BT_UART_MSG_FRAME5TXACTIVITY_MSK & uart_msg->frame5) >>
556                         BT_UART_MSG_FRAME5TXACTIVITY_POS,
557                 (BT_UART_MSG_FRAME5RXACTIVITY_MSK & uart_msg->frame5) >>
558                         BT_UART_MSG_FRAME5RXACTIVITY_POS,
559                 (BT_UART_MSG_FRAME5ESCORETRANSMIT_MSK & uart_msg->frame5) >>
560                         BT_UART_MSG_FRAME5ESCORETRANSMIT_POS);
561
562         IWL_DEBUG_COEX(priv, "Sniff Interval = 0x%X, Discoverable = 0x%X\n",
563                 (BT_UART_MSG_FRAME6SNIFFINTERVAL_MSK & uart_msg->frame6) >>
564                         BT_UART_MSG_FRAME6SNIFFINTERVAL_POS,
565                 (BT_UART_MSG_FRAME6DISCOVERABLE_MSK & uart_msg->frame6) >>
566                         BT_UART_MSG_FRAME6DISCOVERABLE_POS);
567
568         IWL_DEBUG_COEX(priv, "Sniff Activity = 0x%X, Page = "
569                         "0x%X, Inquiry = 0x%X, Connectable = 0x%X\n",
570                 (BT_UART_MSG_FRAME7SNIFFACTIVITY_MSK & uart_msg->frame7) >>
571                         BT_UART_MSG_FRAME7SNIFFACTIVITY_POS,
572                 (BT_UART_MSG_FRAME7PAGE_MSK & uart_msg->frame7) >>
573                         BT_UART_MSG_FRAME7PAGE_POS,
574                 (BT_UART_MSG_FRAME7INQUIRY_MSK & uart_msg->frame7) >>
575                         BT_UART_MSG_FRAME7INQUIRY_POS,
576                 (BT_UART_MSG_FRAME7CONNECTABLE_MSK & uart_msg->frame7) >>
577                         BT_UART_MSG_FRAME7CONNECTABLE_POS);
578 }
579
580 static bool iwlagn_set_kill_msk(struct iwl_priv *priv,
581                                 struct iwl_bt_uart_msg *uart_msg)
582 {
583         bool need_update = false;
584         u8 kill_msk = IWL_BT_KILL_REDUCE;
585         static const __le32 bt_kill_ack_msg[3] = {
586                 IWLAGN_BT_KILL_ACK_MASK_DEFAULT,
587                 IWLAGN_BT_KILL_ACK_CTS_MASK_SCO,
588                 IWLAGN_BT_KILL_ACK_CTS_MASK_REDUCE};
589         static const __le32 bt_kill_cts_msg[3] = {
590                 IWLAGN_BT_KILL_CTS_MASK_DEFAULT,
591                 IWLAGN_BT_KILL_ACK_CTS_MASK_SCO,
592                 IWLAGN_BT_KILL_ACK_CTS_MASK_REDUCE};
593
594         if (!priv->reduced_txpower)
595                 kill_msk = (BT_UART_MSG_FRAME3SCOESCO_MSK & uart_msg->frame3)
596                         ? IWL_BT_KILL_OVERRIDE : IWL_BT_KILL_DEFAULT;
597         if (priv->kill_ack_mask != bt_kill_ack_msg[kill_msk] ||
598             priv->kill_cts_mask != bt_kill_cts_msg[kill_msk]) {
599                 priv->bt_valid |= IWLAGN_BT_VALID_KILL_ACK_MASK;
600                 priv->kill_ack_mask = bt_kill_ack_msg[kill_msk];
601                 priv->bt_valid |= IWLAGN_BT_VALID_KILL_CTS_MASK;
602                 priv->kill_cts_mask = bt_kill_cts_msg[kill_msk];
603                 need_update = true;
604         }
605         return need_update;
606 }
607
608 /*
609  * Upon RSSI changes, sends a bt config command with following changes
610  *  1. enable/disable "reduced control frames tx power
611  *  2. update the "kill)ack_mask" and "kill_cts_mask"
612  *
613  * If "reduced tx power" is enabled, uCode shall
614  *  1. ACK/Back/CTS rate shall reduced to 6Mbps
615  *  2. not use duplciate 20/40MHz mode
616  */
617 static bool iwlagn_fill_txpower_mode(struct iwl_priv *priv,
618                                 struct iwl_bt_uart_msg *uart_msg)
619 {
620         bool need_update = false;
621         struct iwl_rxon_context *ctx = &priv->contexts[IWL_RXON_CTX_BSS];
622         int ave_rssi;
623
624         if (!ctx->vif || (ctx->vif->type != NL80211_IFTYPE_STATION)) {
625                 IWL_DEBUG_INFO(priv, "BSS ctx not active or not in sta mode\n");
626                 return false;
627         }
628
629         ave_rssi = ieee80211_ave_rssi(ctx->vif);
630         if (!ave_rssi) {
631                 /* no rssi data, no changes to reduce tx power */
632                 IWL_DEBUG_COEX(priv, "no rssi data available\n");
633                 return need_update;
634         }
635         if (!priv->reduced_txpower &&
636             !iwl_is_associated(priv, IWL_RXON_CTX_PAN) &&
637             (ave_rssi > BT_ENABLE_REDUCED_TXPOWER_THRESHOLD) &&
638             (uart_msg->frame3 & (BT_UART_MSG_FRAME3ACL_MSK |
639             BT_UART_MSG_FRAME3OBEX_MSK)) &&
640             !(uart_msg->frame3 & (BT_UART_MSG_FRAME3SCOESCO_MSK |
641             BT_UART_MSG_FRAME3SNIFF_MSK | BT_UART_MSG_FRAME3A2DP_MSK))) {
642                 /* enabling reduced tx power */
643                 priv->reduced_txpower = true;
644                 priv->bt_valid |= IWLAGN_BT_VALID_REDUCED_TX_PWR;
645                 need_update = true;
646         } else if (priv->reduced_txpower &&
647                    (iwl_is_associated(priv, IWL_RXON_CTX_PAN) ||
648                    (ave_rssi < BT_DISABLE_REDUCED_TXPOWER_THRESHOLD) ||
649                    (uart_msg->frame3 & (BT_UART_MSG_FRAME3SCOESCO_MSK |
650                    BT_UART_MSG_FRAME3SNIFF_MSK | BT_UART_MSG_FRAME3A2DP_MSK)) ||
651                    !(uart_msg->frame3 & (BT_UART_MSG_FRAME3ACL_MSK |
652                    BT_UART_MSG_FRAME3OBEX_MSK)))) {
653                 /* disable reduced tx power */
654                 priv->reduced_txpower = false;
655                 priv->bt_valid |= IWLAGN_BT_VALID_REDUCED_TX_PWR;
656                 need_update = true;
657         }
658
659         return need_update;
660 }
661
662 static void iwlagn_bt_coex_profile_notif(struct iwl_priv *priv,
663                                          struct iwl_rx_cmd_buffer *rxb)
664 {
665         struct iwl_rx_packet *pkt = rxb_addr(rxb);
666         struct iwl_bt_coex_profile_notif *coex = (void *)pkt->data;
667         struct iwl_bt_uart_msg *uart_msg = &coex->last_bt_uart_msg;
668
669         if (priv->bt_enable_flag == IWLAGN_BT_FLAG_COEX_MODE_DISABLED) {
670                 /* bt coex disabled */
671                 return;
672         }
673
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",
678                         coex->bt_ci_compliance);
679         iwlagn_print_uartmsg(priv, uart_msg);
680
681         priv->last_bt_traffic_load = priv->bt_traffic_load;
682         priv->bt_is_sco = iwlagn_bt_traffic_is_sco(uart_msg);
683
684         if (priv->iw_mode != NL80211_IFTYPE_ADHOC) {
685                 if (priv->bt_status != coex->bt_status ||
686                     priv->last_bt_traffic_load != coex->bt_traffic_load) {
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;
701                         queue_work(priv->workqueue,
702                                    &priv->bt_traffic_change_work);
703                 }
704         }
705
706         /* schedule to send runtime bt_config */
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))
710                 queue_work(priv->workqueue, &priv->bt_runtime_config);
711
712
713         /* FIXME: based on notification, adjust the prio_boost */
714
715         priv->bt_ci_compliance = coex->bt_ci_compliance;
716 }
717
718 void iwlagn_bt_rx_handler_setup(struct iwl_priv *priv)
719 {
720         priv->rx_handlers[REPLY_BT_COEX_PROFILE_NOTIF] =
721                 iwlagn_bt_coex_profile_notif;
722 }
723
724 void iwlagn_bt_setup_deferred_work(struct iwl_priv *priv)
725 {
726         INIT_WORK(&priv->bt_traffic_change_work,
727                   iwlagn_bt_traffic_change_work);
728 }
729
730 void iwlagn_bt_cancel_deferred_work(struct iwl_priv *priv)
731 {
732         cancel_work_sync(&priv->bt_traffic_change_work);
733 }
734
735 static bool is_single_rx_stream(struct iwl_priv *priv)
736 {
737         return priv->current_ht_config.smps == IEEE80211_SMPS_STATIC ||
738                priv->current_ht_config.single_chain_sufficient;
739 }
740
741 #define IWL_NUM_RX_CHAINS_MULTIPLE      3
742 #define IWL_NUM_RX_CHAINS_SINGLE        2
743 #define IWL_NUM_IDLE_CHAINS_DUAL        2
744 #define IWL_NUM_IDLE_CHAINS_SINGLE      1
745
746 /*
747  * Determine how many receiver/antenna chains to use.
748  *
749  * More provides better reception via diversity.  Fewer saves power
750  * at the expense of throughput, but only when not in powersave to
751  * start with.
752  *
753  * MIMO (dual stream) requires at least 2, but works better with 3.
754  * This does not determine *which* chains to use, just how many.
755  */
756 static int iwl_get_active_rx_chain_count(struct iwl_priv *priv)
757 {
758         if (priv->lib->bt_params &&
759             priv->lib->bt_params->advanced_bt_coexist &&
760             (priv->bt_full_concurrent ||
761              priv->bt_traffic_load >= IWL_BT_COEX_TRAFFIC_LOAD_HIGH)) {
762                 /*
763                  * only use chain 'A' in bt high traffic load or
764                  * full concurrency mode
765                  */
766                 return IWL_NUM_RX_CHAINS_SINGLE;
767         }
768         /* # of Rx chains to use when expecting MIMO. */
769         if (is_single_rx_stream(priv))
770                 return IWL_NUM_RX_CHAINS_SINGLE;
771         else
772                 return IWL_NUM_RX_CHAINS_MULTIPLE;
773 }
774
775 /*
776  * When we are in power saving mode, unless device support spatial
777  * multiplexing power save, use the active count for rx chain count.
778  */
779 static int iwl_get_idle_rx_chain_count(struct iwl_priv *priv, int active_cnt)
780 {
781         /* # Rx chains when idling, depending on SMPS mode */
782         switch (priv->current_ht_config.smps) {
783         case IEEE80211_SMPS_STATIC:
784         case IEEE80211_SMPS_DYNAMIC:
785                 return IWL_NUM_IDLE_CHAINS_SINGLE;
786         case IEEE80211_SMPS_AUTOMATIC:
787         case IEEE80211_SMPS_OFF:
788                 return active_cnt;
789         default:
790                 WARN(1, "invalid SMPS mode %d",
791                      priv->current_ht_config.smps);
792                 return active_cnt;
793         }
794 }
795
796 /* up to 4 chains */
797 static u8 iwl_count_chain_bitmap(u32 chain_bitmap)
798 {
799         u8 res;
800         res = (chain_bitmap & BIT(0)) >> 0;
801         res += (chain_bitmap & BIT(1)) >> 1;
802         res += (chain_bitmap & BIT(2)) >> 2;
803         res += (chain_bitmap & BIT(3)) >> 3;
804         return res;
805 }
806
807 /**
808  * iwlagn_set_rxon_chain - Set up Rx chain usage in "staging" RXON image
809  *
810  * Selects how many and which Rx receivers/antennas/chains to use.
811  * This should not be used for scan command ... it puts data in wrong place.
812  */
813 void iwlagn_set_rxon_chain(struct iwl_priv *priv, struct iwl_rxon_context *ctx)
814 {
815         bool is_single = is_single_rx_stream(priv);
816         bool is_cam = !test_bit(STATUS_POWER_PMI, &priv->status);
817         u8 idle_rx_cnt, active_rx_cnt, valid_rx_cnt;
818         u32 active_chains;
819         u16 rx_chain;
820
821         /* Tell uCode which antennas are actually connected.
822          * Before first association, we assume all antennas are connected.
823          * Just after first association, iwl_chain_noise_calibration()
824          *    checks which antennas actually *are* connected. */
825         if (priv->chain_noise_data.active_chains)
826                 active_chains = priv->chain_noise_data.active_chains;
827         else
828                 active_chains = priv->nvm_data->valid_rx_ant;
829
830         if (priv->lib->bt_params &&
831             priv->lib->bt_params->advanced_bt_coexist &&
832             (priv->bt_full_concurrent ||
833              priv->bt_traffic_load >= IWL_BT_COEX_TRAFFIC_LOAD_HIGH)) {
834                 /*
835                  * only use chain 'A' in bt high traffic load or
836                  * full concurrency mode
837                  */
838                 active_chains = first_antenna(active_chains);
839         }
840
841         rx_chain = active_chains << RXON_RX_CHAIN_VALID_POS;
842
843         /* How many receivers should we use? */
844         active_rx_cnt = iwl_get_active_rx_chain_count(priv);
845         idle_rx_cnt = iwl_get_idle_rx_chain_count(priv, active_rx_cnt);
846
847
848         /* correct rx chain count according hw settings
849          * and chain noise calibration
850          */
851         valid_rx_cnt = iwl_count_chain_bitmap(active_chains);
852         if (valid_rx_cnt < active_rx_cnt)
853                 active_rx_cnt = valid_rx_cnt;
854
855         if (valid_rx_cnt < idle_rx_cnt)
856                 idle_rx_cnt = valid_rx_cnt;
857
858         rx_chain |= active_rx_cnt << RXON_RX_CHAIN_MIMO_CNT_POS;
859         rx_chain |= idle_rx_cnt  << RXON_RX_CHAIN_CNT_POS;
860
861         ctx->staging.rx_chain = cpu_to_le16(rx_chain);
862
863         if (!is_single && (active_rx_cnt >= IWL_NUM_RX_CHAINS_SINGLE) && is_cam)
864                 ctx->staging.rx_chain |= RXON_RX_CHAIN_MIMO_FORCE_MSK;
865         else
866                 ctx->staging.rx_chain &= ~RXON_RX_CHAIN_MIMO_FORCE_MSK;
867
868         IWL_DEBUG_ASSOC(priv, "rx_chain=0x%X active=%d idle=%d\n",
869                         ctx->staging.rx_chain,
870                         active_rx_cnt, idle_rx_cnt);
871
872         WARN_ON(active_rx_cnt == 0 || idle_rx_cnt == 0 ||
873                 active_rx_cnt < idle_rx_cnt);
874 }
875
876 u8 iwl_toggle_tx_ant(struct iwl_priv *priv, u8 ant, u8 valid)
877 {
878         int i;
879         u8 ind = ant;
880
881         if (priv->band == IEEE80211_BAND_2GHZ &&
882             priv->bt_traffic_load >= IWL_BT_COEX_TRAFFIC_LOAD_HIGH)
883                 return 0;
884
885         for (i = 0; i < RATE_ANT_NUM - 1; i++) {
886                 ind = (ind + 1) < RATE_ANT_NUM ?  ind + 1 : 0;
887                 if (valid & BIT(ind))
888                         return ind;
889         }
890         return ant;
891 }
892
893 #ifdef CONFIG_PM_SLEEP
894 static void iwlagn_convert_p1k(u16 *p1k, __le16 *out)
895 {
896         int i;
897
898         for (i = 0; i < IWLAGN_P1K_SIZE; i++)
899                 out[i] = cpu_to_le16(p1k[i]);
900 }
901
902 struct wowlan_key_data {
903         struct iwl_rxon_context *ctx;
904         struct iwlagn_wowlan_rsc_tsc_params_cmd *rsc_tsc;
905         struct iwlagn_wowlan_tkip_params_cmd *tkip;
906         const u8 *bssid;
907         bool error, use_rsc_tsc, use_tkip;
908 };
909
910
911 static void iwlagn_wowlan_program_keys(struct ieee80211_hw *hw,
912                                struct ieee80211_vif *vif,
913                                struct ieee80211_sta *sta,
914                                struct ieee80211_key_conf *key,
915                                void *_data)
916 {
917         struct iwl_priv *priv = IWL_MAC80211_GET_DVM(hw);
918         struct wowlan_key_data *data = _data;
919         struct iwl_rxon_context *ctx = data->ctx;
920         struct aes_sc *aes_sc, *aes_tx_sc = NULL;
921         struct tkip_sc *tkip_sc, *tkip_tx_sc = NULL;
922         struct iwlagn_p1k_cache *rx_p1ks;
923         u8 *rx_mic_key;
924         struct ieee80211_key_seq seq;
925         u32 cur_rx_iv32 = 0;
926         u16 p1k[IWLAGN_P1K_SIZE];
927         int ret, i;
928
929         mutex_lock(&priv->mutex);
930
931         if ((key->cipher == WLAN_CIPHER_SUITE_WEP40 ||
932              key->cipher == WLAN_CIPHER_SUITE_WEP104) &&
933              !sta && !ctx->key_mapping_keys)
934                 ret = iwl_set_default_wep_key(priv, ctx, key);
935         else
936                 ret = iwl_set_dynamic_key(priv, ctx, key, sta);
937
938         if (ret) {
939                 IWL_ERR(priv, "Error setting key during suspend!\n");
940                 data->error = true;
941         }
942
943         switch (key->cipher) {
944         case WLAN_CIPHER_SUITE_TKIP:
945                 if (sta) {
946                         tkip_sc = data->rsc_tsc->all_tsc_rsc.tkip.unicast_rsc;
947                         tkip_tx_sc = &data->rsc_tsc->all_tsc_rsc.tkip.tsc;
948
949                         rx_p1ks = data->tkip->rx_uni;
950
951                         ieee80211_get_key_tx_seq(key, &seq);
952                         tkip_tx_sc->iv16 = cpu_to_le16(seq.tkip.iv16);
953                         tkip_tx_sc->iv32 = cpu_to_le32(seq.tkip.iv32);
954
955                         ieee80211_get_tkip_p1k_iv(key, seq.tkip.iv32, p1k);
956                         iwlagn_convert_p1k(p1k, data->tkip->tx.p1k);
957
958                         memcpy(data->tkip->mic_keys.tx,
959                                &key->key[NL80211_TKIP_DATA_OFFSET_TX_MIC_KEY],
960                                IWLAGN_MIC_KEY_SIZE);
961
962                         rx_mic_key = data->tkip->mic_keys.rx_unicast;
963                 } else {
964                         tkip_sc =
965                                 data->rsc_tsc->all_tsc_rsc.tkip.multicast_rsc;
966                         rx_p1ks = data->tkip->rx_multi;
967                         rx_mic_key = data->tkip->mic_keys.rx_mcast;
968                 }
969
970                 /*
971                  * For non-QoS this relies on the fact that both the uCode and
972                  * mac80211 use TID 0 (as they need to to avoid replay attacks)
973                  * for checking the IV in the frames.
974                  */
975                 for (i = 0; i < IWLAGN_NUM_RSC; i++) {
976                         ieee80211_get_key_rx_seq(key, i, &seq);
977                         tkip_sc[i].iv16 = cpu_to_le16(seq.tkip.iv16);
978                         tkip_sc[i].iv32 = cpu_to_le32(seq.tkip.iv32);
979                         /* wrapping isn't allowed, AP must rekey */
980                         if (seq.tkip.iv32 > cur_rx_iv32)
981                                 cur_rx_iv32 = seq.tkip.iv32;
982                 }
983
984                 ieee80211_get_tkip_rx_p1k(key, data->bssid, cur_rx_iv32, p1k);
985                 iwlagn_convert_p1k(p1k, rx_p1ks[0].p1k);
986                 ieee80211_get_tkip_rx_p1k(key, data->bssid,
987                                           cur_rx_iv32 + 1, p1k);
988                 iwlagn_convert_p1k(p1k, rx_p1ks[1].p1k);
989
990                 memcpy(rx_mic_key,
991                        &key->key[NL80211_TKIP_DATA_OFFSET_RX_MIC_KEY],
992                        IWLAGN_MIC_KEY_SIZE);
993
994                 data->use_tkip = true;
995                 data->use_rsc_tsc = true;
996                 break;
997         case WLAN_CIPHER_SUITE_CCMP:
998                 if (sta) {
999                         u8 *pn = seq.ccmp.pn;
1000
1001                         aes_sc = data->rsc_tsc->all_tsc_rsc.aes.unicast_rsc;
1002                         aes_tx_sc = &data->rsc_tsc->all_tsc_rsc.aes.tsc;
1003
1004                         ieee80211_get_key_tx_seq(key, &seq);
1005                         aes_tx_sc->pn = cpu_to_le64(
1006                                         (u64)pn[5] |
1007                                         ((u64)pn[4] << 8) |
1008                                         ((u64)pn[3] << 16) |
1009                                         ((u64)pn[2] << 24) |
1010                                         ((u64)pn[1] << 32) |
1011                                         ((u64)pn[0] << 40));
1012                 } else
1013                         aes_sc = data->rsc_tsc->all_tsc_rsc.aes.multicast_rsc;
1014
1015                 /*
1016                  * For non-QoS this relies on the fact that both the uCode and
1017                  * mac80211 use TID 0 for checking the IV in the frames.
1018                  */
1019                 for (i = 0; i < IWLAGN_NUM_RSC; i++) {
1020                         u8 *pn = seq.ccmp.pn;
1021
1022                         ieee80211_get_key_rx_seq(key, i, &seq);
1023                         aes_sc->pn = cpu_to_le64(
1024                                         (u64)pn[5] |
1025                                         ((u64)pn[4] << 8) |
1026                                         ((u64)pn[3] << 16) |
1027                                         ((u64)pn[2] << 24) |
1028                                         ((u64)pn[1] << 32) |
1029                                         ((u64)pn[0] << 40));
1030                 }
1031                 data->use_rsc_tsc = true;
1032                 break;
1033         }
1034
1035         mutex_unlock(&priv->mutex);
1036 }
1037
1038 int iwlagn_send_patterns(struct iwl_priv *priv,
1039                         struct cfg80211_wowlan *wowlan)
1040 {
1041         struct iwlagn_wowlan_patterns_cmd *pattern_cmd;
1042         struct iwl_host_cmd cmd = {
1043                 .id = REPLY_WOWLAN_PATTERNS,
1044                 .dataflags[0] = IWL_HCMD_DFL_NOCOPY,
1045         };
1046         int i, err;
1047
1048         if (!wowlan->n_patterns)
1049                 return 0;
1050
1051         cmd.len[0] = sizeof(*pattern_cmd) +
1052                 wowlan->n_patterns * sizeof(struct iwlagn_wowlan_pattern);
1053
1054         pattern_cmd = kmalloc(cmd.len[0], GFP_KERNEL);
1055         if (!pattern_cmd)
1056                 return -ENOMEM;
1057
1058         pattern_cmd->n_patterns = cpu_to_le32(wowlan->n_patterns);
1059
1060         for (i = 0; i < wowlan->n_patterns; i++) {
1061                 int mask_len = DIV_ROUND_UP(wowlan->patterns[i].pattern_len, 8);
1062
1063                 memcpy(&pattern_cmd->patterns[i].mask,
1064                         wowlan->patterns[i].mask, mask_len);
1065                 memcpy(&pattern_cmd->patterns[i].pattern,
1066                         wowlan->patterns[i].pattern,
1067                         wowlan->patterns[i].pattern_len);
1068                 pattern_cmd->patterns[i].mask_size = mask_len;
1069                 pattern_cmd->patterns[i].pattern_size =
1070                         wowlan->patterns[i].pattern_len;
1071         }
1072
1073         cmd.data[0] = pattern_cmd;
1074         err = iwl_dvm_send_cmd(priv, &cmd);
1075         kfree(pattern_cmd);
1076         return err;
1077 }
1078
1079 int iwlagn_suspend(struct iwl_priv *priv, struct cfg80211_wowlan *wowlan)
1080 {
1081         struct iwlagn_wowlan_wakeup_filter_cmd wakeup_filter_cmd;
1082         struct iwl_rxon_cmd rxon;
1083         struct iwl_rxon_context *ctx = &priv->contexts[IWL_RXON_CTX_BSS];
1084         struct iwlagn_wowlan_kek_kck_material_cmd kek_kck_cmd;
1085         struct iwlagn_wowlan_tkip_params_cmd tkip_cmd = {};
1086         struct iwlagn_d3_config_cmd d3_cfg_cmd = {
1087                 /*
1088                  * Program the minimum sleep time to 10 seconds, as many
1089                  * platforms have issues processing a wakeup signal while
1090                  * still being in the process of suspending.
1091                  */
1092                 .min_sleep_time = cpu_to_le32(10 * 1000 * 1000),
1093         };
1094         struct wowlan_key_data key_data = {
1095                 .ctx = ctx,
1096                 .bssid = ctx->active.bssid_addr,
1097                 .use_rsc_tsc = false,
1098                 .tkip = &tkip_cmd,
1099                 .use_tkip = false,
1100         };
1101         int ret, i;
1102         u16 seq;
1103
1104         key_data.rsc_tsc = kzalloc(sizeof(*key_data.rsc_tsc), GFP_KERNEL);
1105         if (!key_data.rsc_tsc)
1106                 return -ENOMEM;
1107
1108         memset(&wakeup_filter_cmd, 0, sizeof(wakeup_filter_cmd));
1109
1110         /*
1111          * We know the last used seqno, and the uCode expects to know that
1112          * one, it will increment before TX.
1113          */
1114         seq = le16_to_cpu(priv->last_seq_ctl) & IEEE80211_SCTL_SEQ;
1115         wakeup_filter_cmd.non_qos_seq = cpu_to_le16(seq);
1116
1117         /*
1118          * For QoS counters, we store the one to use next, so subtract 0x10
1119          * since the uCode will add 0x10 before using the value.
1120          */
1121         for (i = 0; i < IWL_MAX_TID_COUNT; i++) {
1122                 seq = priv->tid_data[IWL_AP_ID][i].seq_number;
1123                 seq -= 0x10;
1124                 wakeup_filter_cmd.qos_seq[i] = cpu_to_le16(seq);
1125         }
1126
1127         if (wowlan->disconnect)
1128                 wakeup_filter_cmd.enabled |=
1129                         cpu_to_le32(IWLAGN_WOWLAN_WAKEUP_BEACON_MISS |
1130                                     IWLAGN_WOWLAN_WAKEUP_LINK_CHANGE);
1131         if (wowlan->magic_pkt)
1132                 wakeup_filter_cmd.enabled |=
1133                         cpu_to_le32(IWLAGN_WOWLAN_WAKEUP_MAGIC_PACKET);
1134         if (wowlan->gtk_rekey_failure)
1135                 wakeup_filter_cmd.enabled |=
1136                         cpu_to_le32(IWLAGN_WOWLAN_WAKEUP_GTK_REKEY_FAIL);
1137         if (wowlan->eap_identity_req)
1138                 wakeup_filter_cmd.enabled |=
1139                         cpu_to_le32(IWLAGN_WOWLAN_WAKEUP_EAP_IDENT_REQ);
1140         if (wowlan->four_way_handshake)
1141                 wakeup_filter_cmd.enabled |=
1142                         cpu_to_le32(IWLAGN_WOWLAN_WAKEUP_4WAY_HANDSHAKE);
1143         if (wowlan->n_patterns)
1144                 wakeup_filter_cmd.enabled |=
1145                         cpu_to_le32(IWLAGN_WOWLAN_WAKEUP_PATTERN_MATCH);
1146
1147         if (wowlan->rfkill_release)
1148                 d3_cfg_cmd.wakeup_flags |=
1149                         cpu_to_le32(IWLAGN_D3_WAKEUP_RFKILL);
1150
1151         iwl_scan_cancel_timeout(priv, 200);
1152
1153         memcpy(&rxon, &ctx->active, sizeof(rxon));
1154
1155         priv->ucode_loaded = false;
1156         iwl_trans_stop_device(priv->trans);
1157
1158         priv->wowlan = true;
1159
1160         ret = iwl_load_ucode_wait_alive(priv, IWL_UCODE_WOWLAN);
1161         if (ret)
1162                 goto out;
1163
1164         /* now configure WoWLAN ucode */
1165         ret = iwl_alive_start(priv);
1166         if (ret)
1167                 goto out;
1168
1169         memcpy(&ctx->staging, &rxon, sizeof(rxon));
1170         ret = iwlagn_commit_rxon(priv, ctx);
1171         if (ret)
1172                 goto out;
1173
1174         ret = iwl_power_update_mode(priv, true);
1175         if (ret)
1176                 goto out;
1177
1178         if (!iwlwifi_mod_params.sw_crypto) {
1179                 /* mark all keys clear */
1180                 priv->ucode_key_table = 0;
1181                 ctx->key_mapping_keys = 0;
1182
1183                 /*
1184                  * This needs to be unlocked due to lock ordering
1185                  * constraints. Since we're in the suspend path
1186                  * that isn't really a problem though.
1187                  */
1188                 mutex_unlock(&priv->mutex);
1189                 ieee80211_iter_keys(priv->hw, ctx->vif,
1190                                     iwlagn_wowlan_program_keys,
1191                                     &key_data);
1192                 mutex_lock(&priv->mutex);
1193                 if (key_data.error) {
1194                         ret = -EIO;
1195                         goto out;
1196                 }
1197
1198                 if (key_data.use_rsc_tsc) {
1199                         struct iwl_host_cmd rsc_tsc_cmd = {
1200                                 .id = REPLY_WOWLAN_TSC_RSC_PARAMS,
1201                                 .data[0] = key_data.rsc_tsc,
1202                                 .dataflags[0] = IWL_HCMD_DFL_NOCOPY,
1203                                 .len[0] = sizeof(*key_data.rsc_tsc),
1204                         };
1205
1206                         ret = iwl_dvm_send_cmd(priv, &rsc_tsc_cmd);
1207                         if (ret)
1208                                 goto out;
1209                 }
1210
1211                 if (key_data.use_tkip) {
1212                         ret = iwl_dvm_send_cmd_pdu(priv,
1213                                                  REPLY_WOWLAN_TKIP_PARAMS,
1214                                                  0, sizeof(tkip_cmd),
1215                                                  &tkip_cmd);
1216                         if (ret)
1217                                 goto out;
1218                 }
1219
1220                 if (priv->have_rekey_data) {
1221                         memset(&kek_kck_cmd, 0, sizeof(kek_kck_cmd));
1222                         memcpy(kek_kck_cmd.kck, priv->kck, NL80211_KCK_LEN);
1223                         kek_kck_cmd.kck_len = cpu_to_le16(NL80211_KCK_LEN);
1224                         memcpy(kek_kck_cmd.kek, priv->kek, NL80211_KEK_LEN);
1225                         kek_kck_cmd.kek_len = cpu_to_le16(NL80211_KEK_LEN);
1226                         kek_kck_cmd.replay_ctr = priv->replay_ctr;
1227
1228                         ret = iwl_dvm_send_cmd_pdu(priv,
1229                                                  REPLY_WOWLAN_KEK_KCK_MATERIAL,
1230                                                  0, sizeof(kek_kck_cmd),
1231                                                  &kek_kck_cmd);
1232                         if (ret)
1233                                 goto out;
1234                 }
1235         }
1236
1237         ret = iwl_dvm_send_cmd_pdu(priv, REPLY_D3_CONFIG, 0,
1238                                      sizeof(d3_cfg_cmd), &d3_cfg_cmd);
1239         if (ret)
1240                 goto out;
1241
1242         ret = iwl_dvm_send_cmd_pdu(priv, REPLY_WOWLAN_WAKEUP_FILTER,
1243                                  0, sizeof(wakeup_filter_cmd),
1244                                  &wakeup_filter_cmd);
1245         if (ret)
1246                 goto out;
1247
1248         ret = iwlagn_send_patterns(priv, wowlan);
1249  out:
1250         kfree(key_data.rsc_tsc);
1251         return ret;
1252 }
1253 #endif
1254
1255 int iwl_dvm_send_cmd(struct iwl_priv *priv, struct iwl_host_cmd *cmd)
1256 {
1257         if (iwl_is_rfkill(priv) || iwl_is_ctkill(priv)) {
1258                 IWL_WARN(priv, "Not sending command - %s KILL\n",
1259                          iwl_is_rfkill(priv) ? "RF" : "CT");
1260                 return -EIO;
1261         }
1262
1263         if (test_bit(STATUS_FW_ERROR, &priv->status)) {
1264                 IWL_ERR(priv, "Command %s failed: FW Error\n",
1265                         iwl_dvm_get_cmd_string(cmd->id));
1266                 return -EIO;
1267         }
1268
1269         /*
1270          * This can happen upon FW ASSERT: we clear the STATUS_FW_ERROR flag
1271          * in iwl_down but cancel the workers only later.
1272          */
1273         if (!priv->ucode_loaded) {
1274                 IWL_ERR(priv, "Fw not loaded - dropping CMD: %x\n", cmd->id);
1275                 return -EIO;
1276         }
1277
1278         /*
1279          * Synchronous commands from this op-mode must hold
1280          * the mutex, this ensures we don't try to send two
1281          * (or more) synchronous commands at a time.
1282          */
1283         if (!(cmd->flags & CMD_ASYNC))
1284                 lockdep_assert_held(&priv->mutex);
1285
1286         return iwl_trans_send_cmd(priv->trans, cmd);
1287 }
1288
1289 int iwl_dvm_send_cmd_pdu(struct iwl_priv *priv, u8 id,
1290                          u32 flags, u16 len, const void *data)
1291 {
1292         struct iwl_host_cmd cmd = {
1293                 .id = id,
1294                 .len = { len, },
1295                 .data = { data, },
1296                 .flags = flags,
1297         };
1298
1299         return iwl_dvm_send_cmd(priv, &cmd);
1300 }