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Diffstat (limited to 'drivers/net/wireless/iwlwifi/dvm/lib.c')
-rw-r--r--drivers/net/wireless/iwlwifi/dvm/lib.c1291
1 files changed, 1291 insertions, 0 deletions
diff --git a/drivers/net/wireless/iwlwifi/dvm/lib.c b/drivers/net/wireless/iwlwifi/dvm/lib.c
new file mode 100644
index 000000000000..cb1ca7a25dd5
--- /dev/null
+++ b/drivers/net/wireless/iwlwifi/dvm/lib.c
@@ -0,0 +1,1291 @@
1/******************************************************************************
2 *
3 * GPL LICENSE SUMMARY
4 *
5 * Copyright(c) 2008 - 2012 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 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 *****************************************************************************/
29#include <linux/etherdevice.h>
30#include <linux/kernel.h>
31#include <linux/module.h>
32#include <linux/init.h>
33#include <linux/sched.h>
34#include <net/mac80211.h>
35
36#include "iwl-io.h"
37#include "iwl-agn-hw.h"
38#include "iwl-trans.h"
39#include "iwl-modparams.h"
40
41#include "dev.h"
42#include "agn.h"
43
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{
52 struct iwlagn_tx_power_dbm_cmd tx_power_cmd;
53 u8 tx_ant_cfg_cmd;
54
55 if (WARN_ONCE(test_bit(STATUS_SCAN_HW, &priv->status),
56 "TX Power requested while scanning!\n"))
57 return -EAGAIN;
58
59 /* half dBm need to multiply */
60 tx_power_cmd.global_lmt = (s8)(2 * priv->tx_power_user_lmt);
61
62 if (tx_power_cmd.global_lmt > priv->eeprom_data->max_tx_pwr_half_dbm) {
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 */
74 tx_power_cmd.global_lmt =
75 priv->eeprom_data->max_tx_pwr_half_dbm;
76 }
77 tx_power_cmd.flags = IWLAGN_TX_POWER_NO_CLOSED;
78 tx_power_cmd.srv_chan_lmt = IWLAGN_TX_POWER_AUTO;
79
80 if (IWL_UCODE_API(priv->fw->ucode_ver) == 1)
81 tx_ant_cfg_cmd = REPLY_TX_POWER_DBM_CMD_V1;
82 else
83 tx_ant_cfg_cmd = REPLY_TX_POWER_DBM_CMD;
84
85 return iwl_dvm_send_cmd_pdu(priv, tx_ant_cfg_cmd, CMD_SYNC,
86 sizeof(tx_power_cmd), &tx_power_cmd);
87}
88
89void iwlagn_temperature(struct iwl_priv *priv)
90{
91 lockdep_assert_held(&priv->statistics.lock);
92
93 /* store temperature from correct statistics (in Celsius) */
94 priv->temperature = le32_to_cpu(priv->statistics.common.temperature);
95 iwl_tt_handler(priv);
96}
97
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
119int iwlagn_manage_ibss_station(struct iwl_priv *priv,
120 struct ieee80211_vif *vif, bool add)
121{
122 struct iwl_vif_priv *vif_priv = (void *)vif->drv_priv;
123
124 if (add)
125 return iwlagn_add_bssid_station(priv, vif_priv->ctx,
126 vif->bss_conf.bssid,
127 &vif_priv->ibss_bssid_sta_id);
128 return iwl_remove_station(priv, vif_priv->ibss_bssid_sta_id,
129 vif->bss_conf.bssid);
130}
131
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,
144 .len = { sizeof(struct iwl_txfifo_flush_cmd), },
145 .flags = CMD_SYNC,
146 .data = { &flush_cmd, },
147 };
148
149 might_sleep();
150
151 memset(&flush_cmd, 0, sizeof(flush_cmd));
152 if (flush_control & BIT(IWL_RXON_CTX_BSS))
153 flush_cmd.fifo_control = IWL_SCD_VO_MSK | IWL_SCD_VI_MSK |
154 IWL_SCD_BE_MSK | IWL_SCD_BK_MSK |
155 IWL_SCD_MGMT_MSK;
156 if ((flush_control & BIT(IWL_RXON_CTX_PAN)) &&
157 (priv->valid_contexts != BIT(IWL_RXON_CTX_BSS)))
158 flush_cmd.fifo_control |= IWL_PAN_SCD_VO_MSK |
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
163 if (priv->hw_params.sku & EEPROM_SKU_CAP_11N_ENABLE)
164 flush_cmd.fifo_control |= IWL_AGG_TX_QUEUE_MSK;
165
166 IWL_DEBUG_INFO(priv, "fifo queue control: 0X%x\n",
167 flush_cmd.fifo_control);
168 flush_cmd.flush_control = cpu_to_le16(flush_control);
169
170 return iwl_dvm_send_cmd(priv, &cmd);
171}
172
173void iwlagn_dev_txfifo_flush(struct iwl_priv *priv, u16 flush_control)
174{
175 mutex_lock(&priv->mutex);
176 ieee80211_stop_queues(priv->hw);
177 if (iwlagn_txfifo_flush(priv, IWL_DROP_ALL)) {
178 IWL_ERR(priv, "flush request fail\n");
179 goto done;
180 }
181 IWL_DEBUG_INFO(priv, "wait transmit/flush all frames\n");
182 iwl_trans_wait_tx_queue_empty(priv->trans);
183done:
184 ieee80211_wake_queues(priv->hw);
185 mutex_unlock(&priv->mutex);
186}
187
188/*
189 * BT coex
190 */
191/* Notmal TDM */
192static const __le32 iwlagn_def_3w_lookup[IWLAGN_BT_DECISION_LUT_SIZE] = {
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),
204 cpu_to_le32(0xf0005000),
205};
206
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] = {
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{
242 struct iwl_basic_bt_cmd basic = {
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 };
248 struct iwl_bt_cmd_v1 bt_cmd_v1;
249 struct iwl_bt_cmd_v2 bt_cmd_v2;
250 int ret;
251
252 BUILD_BUG_ON(sizeof(iwlagn_def_3w_lookup) !=
253 sizeof(basic.bt3_lookup_table));
254
255 if (priv->cfg->bt_params) {
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 */
262 if (priv->cfg->bt_params->bt_session_2) {
263 bt_cmd_v2.prio_boost = cpu_to_le32(
264 priv->cfg->bt_params->bt_prio_boost);
265 bt_cmd_v2.tx_prio_boost = 0;
266 bt_cmd_v2.rx_prio_boost = 0;
267 } else {
268 bt_cmd_v1.prio_boost =
269 priv->cfg->bt_params->bt_prio_boost;
270 bt_cmd_v1.tx_prio_boost = 0;
271 bt_cmd_v1.rx_prio_boost = 0;
272 }
273 } else {
274 IWL_ERR(priv, "failed to construct BT Coex Config\n");
275 return;
276 }
277
278 /*
279 * Possible situations when BT needs to take over for receive,
280 * at the same time where STA needs to response to AP's frame(s),
281 * reduce the tx power of the required response frames, by that,
282 * allow the concurrent BT receive & WiFi transmit
283 * (BT - ANT A, WiFi -ANT B), without interference to one another
284 *
285 * Reduced tx power apply to control frames only (ACK/Back/CTS)
286 * when indicated by the BT config command
287 */
288 basic.kill_ack_mask = priv->kill_ack_mask;
289 basic.kill_cts_mask = priv->kill_cts_mask;
290 if (priv->reduced_txpower)
291 basic.reduce_txpower = IWLAGN_BT_REDUCED_TX_PWR;
292 basic.valid = priv->bt_valid;
293
294 /*
295 * Configure BT coex mode to "no coexistence" when the
296 * user disabled BT coexistence, we have no interface
297 * (might be in monitor mode), or the interface is in
298 * IBSS mode (no proper uCode support for coex then).
299 */
300 if (!iwlwifi_mod_params.bt_coex_active ||
301 priv->iw_mode == NL80211_IFTYPE_ADHOC) {
302 basic.flags = IWLAGN_BT_FLAG_COEX_MODE_DISABLED;
303 } else {
304 basic.flags = IWLAGN_BT_FLAG_COEX_MODE_3W <<
305 IWLAGN_BT_FLAG_COEX_MODE_SHIFT;
306
307 if (!priv->bt_enable_pspoll)
308 basic.flags |= IWLAGN_BT_FLAG_SYNC_2_BT_DISABLE;
309 else
310 basic.flags &= ~IWLAGN_BT_FLAG_SYNC_2_BT_DISABLE;
311
312 if (priv->bt_ch_announce)
313 basic.flags |= IWLAGN_BT_FLAG_CHANNEL_INHIBITION;
314 IWL_DEBUG_COEX(priv, "BT coex flag: 0X%x\n", basic.flags);
315 }
316 priv->bt_enable_flag = basic.flags;
317 if (priv->bt_full_concurrent)
318 memcpy(basic.bt3_lookup_table, iwlagn_concurrent_lookup,
319 sizeof(iwlagn_concurrent_lookup));
320 else
321 memcpy(basic.bt3_lookup_table, iwlagn_def_3w_lookup,
322 sizeof(iwlagn_def_3w_lookup));
323
324 IWL_DEBUG_COEX(priv, "BT coex %s in %s mode\n",
325 basic.flags ? "active" : "disabled",
326 priv->bt_full_concurrent ?
327 "full concurrency" : "3-wire");
328
329 if (priv->cfg->bt_params->bt_session_2) {
330 memcpy(&bt_cmd_v2.basic, &basic,
331 sizeof(basic));
332 ret = iwl_dvm_send_cmd_pdu(priv, REPLY_BT_CONFIG,
333 CMD_SYNC, sizeof(bt_cmd_v2), &bt_cmd_v2);
334 } else {
335 memcpy(&bt_cmd_v1.basic, &basic,
336 sizeof(basic));
337 ret = iwl_dvm_send_cmd_pdu(priv, REPLY_BT_CONFIG,
338 CMD_SYNC, sizeof(bt_cmd_v1), &bt_cmd_v1);
339 }
340 if (ret)
341 IWL_ERR(priv, "failed to send BT Coex Config\n");
342
343}
344
345void iwlagn_bt_adjust_rssi_monitor(struct iwl_priv *priv, bool rssi_ena)
346{
347 struct iwl_rxon_context *ctx, *found_ctx = NULL;
348 bool found_ap = false;
349
350 lockdep_assert_held(&priv->mutex);
351
352 /* Check whether AP or GO mode is active. */
353 if (rssi_ena) {
354 for_each_context(priv, ctx) {
355 if (ctx->vif && ctx->vif->type == NL80211_IFTYPE_AP &&
356 iwl_is_associated_ctx(ctx)) {
357 found_ap = true;
358 break;
359 }
360 }
361 }
362
363 /*
364 * If disable was received or If GO/AP mode, disable RSSI
365 * measurements.
366 */
367 if (!rssi_ena || found_ap) {
368 if (priv->cur_rssi_ctx) {
369 ctx = priv->cur_rssi_ctx;
370 ieee80211_disable_rssi_reports(ctx->vif);
371 priv->cur_rssi_ctx = NULL;
372 }
373 return;
374 }
375
376 /*
377 * If rssi measurements need to be enabled, consider all cases now.
378 * Figure out how many contexts are active.
379 */
380 for_each_context(priv, ctx) {
381 if (ctx->vif && ctx->vif->type == NL80211_IFTYPE_STATION &&
382 iwl_is_associated_ctx(ctx)) {
383 found_ctx = ctx;
384 break;
385 }
386 }
387
388 /*
389 * rssi monitor already enabled for the correct interface...nothing
390 * to do.
391 */
392 if (found_ctx == priv->cur_rssi_ctx)
393 return;
394
395 /*
396 * Figure out if rssi monitor is currently enabled, and needs
397 * to be changed. If rssi monitor is already enabled, disable
398 * it first else just enable rssi measurements on the
399 * interface found above.
400 */
401 if (priv->cur_rssi_ctx) {
402 ctx = priv->cur_rssi_ctx;
403 if (ctx->vif)
404 ieee80211_disable_rssi_reports(ctx->vif);
405 }
406
407 priv->cur_rssi_ctx = found_ctx;
408
409 if (!found_ctx)
410 return;
411
412 ieee80211_enable_rssi_reports(found_ctx->vif,
413 IWLAGN_BT_PSP_MIN_RSSI_THRESHOLD,
414 IWLAGN_BT_PSP_MAX_RSSI_THRESHOLD);
415}
416
417static bool iwlagn_bt_traffic_is_sco(struct iwl_bt_uart_msg *uart_msg)
418{
419 return BT_UART_MSG_FRAME3SCOESCO_MSK & uart_msg->frame3 >>
420 BT_UART_MSG_FRAME3SCOESCO_POS;
421}
422
423static void iwlagn_bt_traffic_change_work(struct work_struct *work)
424{
425 struct iwl_priv *priv =
426 container_of(work, struct iwl_priv, bt_traffic_change_work);
427 struct iwl_rxon_context *ctx;
428 int smps_request = -1;
429
430 if (priv->bt_enable_flag == IWLAGN_BT_FLAG_COEX_MODE_DISABLED) {
431 /* bt coex disabled */
432 return;
433 }
434
435 /*
436 * Note: bt_traffic_load can be overridden by scan complete and
437 * coex profile notifications. Ignore that since only bad consequence
438 * can be not matching debug print with actual state.
439 */
440 IWL_DEBUG_COEX(priv, "BT traffic load changes: %d\n",
441 priv->bt_traffic_load);
442
443 switch (priv->bt_traffic_load) {
444 case IWL_BT_COEX_TRAFFIC_LOAD_NONE:
445 if (priv->bt_status)
446 smps_request = IEEE80211_SMPS_DYNAMIC;
447 else
448 smps_request = IEEE80211_SMPS_AUTOMATIC;
449 break;
450 case IWL_BT_COEX_TRAFFIC_LOAD_LOW:
451 smps_request = IEEE80211_SMPS_DYNAMIC;
452 break;
453 case IWL_BT_COEX_TRAFFIC_LOAD_HIGH:
454 case IWL_BT_COEX_TRAFFIC_LOAD_CONTINUOUS:
455 smps_request = IEEE80211_SMPS_STATIC;
456 break;
457 default:
458 IWL_ERR(priv, "Invalid BT traffic load: %d\n",
459 priv->bt_traffic_load);
460 break;
461 }
462
463 mutex_lock(&priv->mutex);
464
465 /*
466 * We can not send command to firmware while scanning. When the scan
467 * complete we will schedule this work again. We do check with mutex
468 * locked to prevent new scan request to arrive. We do not check
469 * STATUS_SCANNING to avoid race when queue_work two times from
470 * different notifications, but quit and not perform any work at all.
471 */
472 if (test_bit(STATUS_SCAN_HW, &priv->status))
473 goto out;
474
475 iwl_update_chain_flags(priv);
476
477 if (smps_request != -1) {
478 priv->current_ht_config.smps = smps_request;
479 for_each_context(priv, ctx) {
480 if (ctx->vif && ctx->vif->type == NL80211_IFTYPE_STATION)
481 ieee80211_request_smps(ctx->vif, smps_request);
482 }
483 }
484
485 /*
486 * Dynamic PS poll related functionality. Adjust RSSI measurements if
487 * necessary.
488 */
489 iwlagn_bt_coex_rssi_monitor(priv);
490out:
491 mutex_unlock(&priv->mutex);
492}
493
494/*
495 * If BT sco traffic, and RSSI monitor is enabled, move measurements to the
496 * correct interface or disable it if this is the last interface to be
497 * removed.
498 */
499void iwlagn_bt_coex_rssi_monitor(struct iwl_priv *priv)
500{
501 if (priv->bt_is_sco &&
502 priv->bt_traffic_load == IWL_BT_COEX_TRAFFIC_LOAD_CONTINUOUS)
503 iwlagn_bt_adjust_rssi_monitor(priv, true);
504 else
505 iwlagn_bt_adjust_rssi_monitor(priv, false);
506}
507
508static void iwlagn_print_uartmsg(struct iwl_priv *priv,
509 struct iwl_bt_uart_msg *uart_msg)
510{
511 IWL_DEBUG_COEX(priv, "Message Type = 0x%X, SSN = 0x%X, "
512 "Update Req = 0x%X\n",
513 (BT_UART_MSG_FRAME1MSGTYPE_MSK & uart_msg->frame1) >>
514 BT_UART_MSG_FRAME1MSGTYPE_POS,
515 (BT_UART_MSG_FRAME1SSN_MSK & uart_msg->frame1) >>
516 BT_UART_MSG_FRAME1SSN_POS,
517 (BT_UART_MSG_FRAME1UPDATEREQ_MSK & uart_msg->frame1) >>
518 BT_UART_MSG_FRAME1UPDATEREQ_POS);
519
520 IWL_DEBUG_COEX(priv, "Open connections = 0x%X, Traffic load = 0x%X, "
521 "Chl_SeqN = 0x%X, In band = 0x%X\n",
522 (BT_UART_MSG_FRAME2OPENCONNECTIONS_MSK & uart_msg->frame2) >>
523 BT_UART_MSG_FRAME2OPENCONNECTIONS_POS,
524 (BT_UART_MSG_FRAME2TRAFFICLOAD_MSK & uart_msg->frame2) >>
525 BT_UART_MSG_FRAME2TRAFFICLOAD_POS,
526 (BT_UART_MSG_FRAME2CHLSEQN_MSK & uart_msg->frame2) >>
527 BT_UART_MSG_FRAME2CHLSEQN_POS,
528 (BT_UART_MSG_FRAME2INBAND_MSK & uart_msg->frame2) >>
529 BT_UART_MSG_FRAME2INBAND_POS);
530
531 IWL_DEBUG_COEX(priv, "SCO/eSCO = 0x%X, Sniff = 0x%X, A2DP = 0x%X, "
532 "ACL = 0x%X, Master = 0x%X, OBEX = 0x%X\n",
533 (BT_UART_MSG_FRAME3SCOESCO_MSK & uart_msg->frame3) >>
534 BT_UART_MSG_FRAME3SCOESCO_POS,
535 (BT_UART_MSG_FRAME3SNIFF_MSK & uart_msg->frame3) >>
536 BT_UART_MSG_FRAME3SNIFF_POS,
537 (BT_UART_MSG_FRAME3A2DP_MSK & uart_msg->frame3) >>
538 BT_UART_MSG_FRAME3A2DP_POS,
539 (BT_UART_MSG_FRAME3ACL_MSK & uart_msg->frame3) >>
540 BT_UART_MSG_FRAME3ACL_POS,
541 (BT_UART_MSG_FRAME3MASTER_MSK & uart_msg->frame3) >>
542 BT_UART_MSG_FRAME3MASTER_POS,
543 (BT_UART_MSG_FRAME3OBEX_MSK & uart_msg->frame3) >>
544 BT_UART_MSG_FRAME3OBEX_POS);
545
546 IWL_DEBUG_COEX(priv, "Idle duration = 0x%X\n",
547 (BT_UART_MSG_FRAME4IDLEDURATION_MSK & uart_msg->frame4) >>
548 BT_UART_MSG_FRAME4IDLEDURATION_POS);
549
550 IWL_DEBUG_COEX(priv, "Tx Activity = 0x%X, Rx Activity = 0x%X, "
551 "eSCO Retransmissions = 0x%X\n",
552 (BT_UART_MSG_FRAME5TXACTIVITY_MSK & uart_msg->frame5) >>
553 BT_UART_MSG_FRAME5TXACTIVITY_POS,
554 (BT_UART_MSG_FRAME5RXACTIVITY_MSK & uart_msg->frame5) >>
555 BT_UART_MSG_FRAME5RXACTIVITY_POS,
556 (BT_UART_MSG_FRAME5ESCORETRANSMIT_MSK & uart_msg->frame5) >>
557 BT_UART_MSG_FRAME5ESCORETRANSMIT_POS);
558
559 IWL_DEBUG_COEX(priv, "Sniff Interval = 0x%X, Discoverable = 0x%X\n",
560 (BT_UART_MSG_FRAME6SNIFFINTERVAL_MSK & uart_msg->frame6) >>
561 BT_UART_MSG_FRAME6SNIFFINTERVAL_POS,
562 (BT_UART_MSG_FRAME6DISCOVERABLE_MSK & uart_msg->frame6) >>
563 BT_UART_MSG_FRAME6DISCOVERABLE_POS);
564
565 IWL_DEBUG_COEX(priv, "Sniff Activity = 0x%X, Page = "
566 "0x%X, Inquiry = 0x%X, Connectable = 0x%X\n",
567 (BT_UART_MSG_FRAME7SNIFFACTIVITY_MSK & uart_msg->frame7) >>
568 BT_UART_MSG_FRAME7SNIFFACTIVITY_POS,
569 (BT_UART_MSG_FRAME7PAGE_MSK & uart_msg->frame7) >>
570 BT_UART_MSG_FRAME7PAGE_POS,
571 (BT_UART_MSG_FRAME7INQUIRY_MSK & uart_msg->frame7) >>
572 BT_UART_MSG_FRAME7INQUIRY_POS,
573 (BT_UART_MSG_FRAME7CONNECTABLE_MSK & uart_msg->frame7) >>
574 BT_UART_MSG_FRAME7CONNECTABLE_POS);
575}
576
577static bool iwlagn_set_kill_msk(struct iwl_priv *priv,
578 struct iwl_bt_uart_msg *uart_msg)
579{
580 bool need_update = false;
581 u8 kill_msk = IWL_BT_KILL_REDUCE;
582 static const __le32 bt_kill_ack_msg[3] = {
583 IWLAGN_BT_KILL_ACK_MASK_DEFAULT,
584 IWLAGN_BT_KILL_ACK_CTS_MASK_SCO,
585 IWLAGN_BT_KILL_ACK_CTS_MASK_REDUCE};
586 static const __le32 bt_kill_cts_msg[3] = {
587 IWLAGN_BT_KILL_CTS_MASK_DEFAULT,
588 IWLAGN_BT_KILL_ACK_CTS_MASK_SCO,
589 IWLAGN_BT_KILL_ACK_CTS_MASK_REDUCE};
590
591 if (!priv->reduced_txpower)
592 kill_msk = (BT_UART_MSG_FRAME3SCOESCO_MSK & uart_msg->frame3)
593 ? IWL_BT_KILL_OVERRIDE : IWL_BT_KILL_DEFAULT;
594 if (priv->kill_ack_mask != bt_kill_ack_msg[kill_msk] ||
595 priv->kill_cts_mask != bt_kill_cts_msg[kill_msk]) {
596 priv->bt_valid |= IWLAGN_BT_VALID_KILL_ACK_MASK;
597 priv->kill_ack_mask = bt_kill_ack_msg[kill_msk];
598 priv->bt_valid |= IWLAGN_BT_VALID_KILL_CTS_MASK;
599 priv->kill_cts_mask = bt_kill_cts_msg[kill_msk];
600 need_update = true;
601 }
602 return need_update;
603}
604
605/*
606 * Upon RSSI changes, sends a bt config command with following changes
607 * 1. enable/disable "reduced control frames tx power
608 * 2. update the "kill)ack_mask" and "kill_cts_mask"
609 *
610 * If "reduced tx power" is enabled, uCode shall
611 * 1. ACK/Back/CTS rate shall reduced to 6Mbps
612 * 2. not use duplciate 20/40MHz mode
613 */
614static bool iwlagn_fill_txpower_mode(struct iwl_priv *priv,
615 struct iwl_bt_uart_msg *uart_msg)
616{
617 bool need_update = false;
618 struct iwl_rxon_context *ctx = &priv->contexts[IWL_RXON_CTX_BSS];
619 int ave_rssi;
620
621 if (!ctx->vif || (ctx->vif->type != NL80211_IFTYPE_STATION)) {
622 IWL_DEBUG_INFO(priv, "BSS ctx not active or not in sta mode\n");
623 return false;
624 }
625
626 ave_rssi = ieee80211_ave_rssi(ctx->vif);
627 if (!ave_rssi) {
628 /* no rssi data, no changes to reduce tx power */
629 IWL_DEBUG_COEX(priv, "no rssi data available\n");
630 return need_update;
631 }
632 if (!priv->reduced_txpower &&
633 !iwl_is_associated(priv, IWL_RXON_CTX_PAN) &&
634 (ave_rssi > BT_ENABLE_REDUCED_TXPOWER_THRESHOLD) &&
635 (uart_msg->frame3 & (BT_UART_MSG_FRAME3ACL_MSK |
636 BT_UART_MSG_FRAME3OBEX_MSK)) &&
637 !(uart_msg->frame3 & (BT_UART_MSG_FRAME3SCOESCO_MSK |
638 BT_UART_MSG_FRAME3SNIFF_MSK | BT_UART_MSG_FRAME3A2DP_MSK))) {
639 /* enabling reduced tx power */
640 priv->reduced_txpower = true;
641 priv->bt_valid |= IWLAGN_BT_VALID_REDUCED_TX_PWR;
642 need_update = true;
643 } else if (priv->reduced_txpower &&
644 (iwl_is_associated(priv, IWL_RXON_CTX_PAN) ||
645 (ave_rssi < BT_DISABLE_REDUCED_TXPOWER_THRESHOLD) ||
646 (uart_msg->frame3 & (BT_UART_MSG_FRAME3SCOESCO_MSK |
647 BT_UART_MSG_FRAME3SNIFF_MSK | BT_UART_MSG_FRAME3A2DP_MSK)) ||
648 !(uart_msg->frame3 & (BT_UART_MSG_FRAME3ACL_MSK |
649 BT_UART_MSG_FRAME3OBEX_MSK)))) {
650 /* disable reduced tx power */
651 priv->reduced_txpower = false;
652 priv->bt_valid |= IWLAGN_BT_VALID_REDUCED_TX_PWR;
653 need_update = true;
654 }
655
656 return need_update;
657}
658
659int iwlagn_bt_coex_profile_notif(struct iwl_priv *priv,
660 struct iwl_rx_cmd_buffer *rxb,
661 struct iwl_device_cmd *cmd)
662{
663 struct iwl_rx_packet *pkt = rxb_addr(rxb);
664 struct iwl_bt_coex_profile_notif *coex = (void *)pkt->data;
665 struct iwl_bt_uart_msg *uart_msg = &coex->last_bt_uart_msg;
666
667 if (priv->bt_enable_flag == IWLAGN_BT_FLAG_COEX_MODE_DISABLED) {
668 /* bt coex disabled */
669 return 0;
670 }
671
672 IWL_DEBUG_COEX(priv, "BT Coex notification:\n");
673 IWL_DEBUG_COEX(priv, " status: %d\n", coex->bt_status);
674 IWL_DEBUG_COEX(priv, " traffic load: %d\n", coex->bt_traffic_load);
675 IWL_DEBUG_COEX(priv, " CI compliance: %d\n",
676 coex->bt_ci_compliance);
677 iwlagn_print_uartmsg(priv, uart_msg);
678
679 priv->last_bt_traffic_load = priv->bt_traffic_load;
680 priv->bt_is_sco = iwlagn_bt_traffic_is_sco(uart_msg);
681
682 if (priv->iw_mode != NL80211_IFTYPE_ADHOC) {
683 if (priv->bt_status != coex->bt_status ||
684 priv->last_bt_traffic_load != coex->bt_traffic_load) {
685 if (coex->bt_status) {
686 /* BT on */
687 if (!priv->bt_ch_announce)
688 priv->bt_traffic_load =
689 IWL_BT_COEX_TRAFFIC_LOAD_HIGH;
690 else
691 priv->bt_traffic_load =
692 coex->bt_traffic_load;
693 } else {
694 /* BT off */
695 priv->bt_traffic_load =
696 IWL_BT_COEX_TRAFFIC_LOAD_NONE;
697 }
698 priv->bt_status = coex->bt_status;
699 queue_work(priv->workqueue,
700 &priv->bt_traffic_change_work);
701 }
702 }
703
704 /* schedule to send runtime bt_config */
705 /* check reduce power before change ack/cts kill mask */
706 if (iwlagn_fill_txpower_mode(priv, uart_msg) ||
707 iwlagn_set_kill_msk(priv, uart_msg))
708 queue_work(priv->workqueue, &priv->bt_runtime_config);
709
710
711 /* FIXME: based on notification, adjust the prio_boost */
712
713 priv->bt_ci_compliance = coex->bt_ci_compliance;
714 return 0;
715}
716
717void iwlagn_bt_rx_handler_setup(struct iwl_priv *priv)
718{
719 priv->rx_handlers[REPLY_BT_COEX_PROFILE_NOTIF] =
720 iwlagn_bt_coex_profile_notif;
721}
722
723void iwlagn_bt_setup_deferred_work(struct iwl_priv *priv)
724{
725 INIT_WORK(&priv->bt_traffic_change_work,
726 iwlagn_bt_traffic_change_work);
727}
728
729void iwlagn_bt_cancel_deferred_work(struct iwl_priv *priv)
730{
731 cancel_work_sync(&priv->bt_traffic_change_work);
732}
733
734static bool is_single_rx_stream(struct iwl_priv *priv)
735{
736 return priv->current_ht_config.smps == IEEE80211_SMPS_STATIC ||
737 priv->current_ht_config.single_chain_sufficient;
738}
739
740#define IWL_NUM_RX_CHAINS_MULTIPLE 3
741#define IWL_NUM_RX_CHAINS_SINGLE 2
742#define IWL_NUM_IDLE_CHAINS_DUAL 2
743#define IWL_NUM_IDLE_CHAINS_SINGLE 1
744
745/*
746 * Determine how many receiver/antenna chains to use.
747 *
748 * More provides better reception via diversity. Fewer saves power
749 * at the expense of throughput, but only when not in powersave to
750 * start with.
751 *
752 * MIMO (dual stream) requires at least 2, but works better with 3.
753 * This does not determine *which* chains to use, just how many.
754 */
755static int iwl_get_active_rx_chain_count(struct iwl_priv *priv)
756{
757 if (priv->cfg->bt_params &&
758 priv->cfg->bt_params->advanced_bt_coexist &&
759 (priv->bt_full_concurrent ||
760 priv->bt_traffic_load >= IWL_BT_COEX_TRAFFIC_LOAD_HIGH)) {
761 /*
762 * only use chain 'A' in bt high traffic load or
763 * full concurrency mode
764 */
765 return IWL_NUM_RX_CHAINS_SINGLE;
766 }
767 /* # of Rx chains to use when expecting MIMO. */
768 if (is_single_rx_stream(priv))
769 return IWL_NUM_RX_CHAINS_SINGLE;
770 else
771 return IWL_NUM_RX_CHAINS_MULTIPLE;
772}
773
774/*
775 * When we are in power saving mode, unless device support spatial
776 * multiplexing power save, use the active count for rx chain count.
777 */
778static int iwl_get_idle_rx_chain_count(struct iwl_priv *priv, int active_cnt)
779{
780 /* # Rx chains when idling, depending on SMPS mode */
781 switch (priv->current_ht_config.smps) {
782 case IEEE80211_SMPS_STATIC:
783 case IEEE80211_SMPS_DYNAMIC:
784 return IWL_NUM_IDLE_CHAINS_SINGLE;
785 case IEEE80211_SMPS_AUTOMATIC:
786 case IEEE80211_SMPS_OFF:
787 return active_cnt;
788 default:
789 WARN(1, "invalid SMPS mode %d",
790 priv->current_ht_config.smps);
791 return active_cnt;
792 }
793}
794
795/* up to 4 chains */
796static u8 iwl_count_chain_bitmap(u32 chain_bitmap)
797{
798 u8 res;
799 res = (chain_bitmap & BIT(0)) >> 0;
800 res += (chain_bitmap & BIT(1)) >> 1;
801 res += (chain_bitmap & BIT(2)) >> 2;
802 res += (chain_bitmap & BIT(3)) >> 3;
803 return res;
804}
805
806/**
807 * iwlagn_set_rxon_chain - Set up Rx chain usage in "staging" RXON image
808 *
809 * Selects how many and which Rx receivers/antennas/chains to use.
810 * This should not be used for scan command ... it puts data in wrong place.
811 */
812void iwlagn_set_rxon_chain(struct iwl_priv *priv, struct iwl_rxon_context *ctx)
813{
814 bool is_single = is_single_rx_stream(priv);
815 bool is_cam = !test_bit(STATUS_POWER_PMI, &priv->status);
816 u8 idle_rx_cnt, active_rx_cnt, valid_rx_cnt;
817 u32 active_chains;
818 u16 rx_chain;
819
820 /* Tell uCode which antennas are actually connected.
821 * Before first association, we assume all antennas are connected.
822 * Just after first association, iwl_chain_noise_calibration()
823 * checks which antennas actually *are* connected. */
824 if (priv->chain_noise_data.active_chains)
825 active_chains = priv->chain_noise_data.active_chains;
826 else
827 active_chains = priv->eeprom_data->valid_rx_ant;
828
829 if (priv->cfg->bt_params &&
830 priv->cfg->bt_params->advanced_bt_coexist &&
831 (priv->bt_full_concurrent ||
832 priv->bt_traffic_load >= IWL_BT_COEX_TRAFFIC_LOAD_HIGH)) {
833 /*
834 * only use chain 'A' in bt high traffic load or
835 * full concurrency mode
836 */
837 active_chains = first_antenna(active_chains);
838 }
839
840 rx_chain = active_chains << RXON_RX_CHAIN_VALID_POS;
841
842 /* How many receivers should we use? */
843 active_rx_cnt = iwl_get_active_rx_chain_count(priv);
844 idle_rx_cnt = iwl_get_idle_rx_chain_count(priv, active_rx_cnt);
845
846
847 /* correct rx chain count according hw settings
848 * and chain noise calibration
849 */
850 valid_rx_cnt = iwl_count_chain_bitmap(active_chains);
851 if (valid_rx_cnt < active_rx_cnt)
852 active_rx_cnt = valid_rx_cnt;
853
854 if (valid_rx_cnt < idle_rx_cnt)
855 idle_rx_cnt = valid_rx_cnt;
856
857 rx_chain |= active_rx_cnt << RXON_RX_CHAIN_MIMO_CNT_POS;
858 rx_chain |= idle_rx_cnt << RXON_RX_CHAIN_CNT_POS;
859
860 ctx->staging.rx_chain = cpu_to_le16(rx_chain);
861
862 if (!is_single && (active_rx_cnt >= IWL_NUM_RX_CHAINS_SINGLE) && is_cam)
863 ctx->staging.rx_chain |= RXON_RX_CHAIN_MIMO_FORCE_MSK;
864 else
865 ctx->staging.rx_chain &= ~RXON_RX_CHAIN_MIMO_FORCE_MSK;
866
867 IWL_DEBUG_ASSOC(priv, "rx_chain=0x%X active=%d idle=%d\n",
868 ctx->staging.rx_chain,
869 active_rx_cnt, idle_rx_cnt);
870
871 WARN_ON(active_rx_cnt == 0 || idle_rx_cnt == 0 ||
872 active_rx_cnt < idle_rx_cnt);
873}
874
875u8 iwl_toggle_tx_ant(struct iwl_priv *priv, u8 ant, u8 valid)
876{
877 int i;
878 u8 ind = ant;
879
880 if (priv->band == IEEE80211_BAND_2GHZ &&
881 priv->bt_traffic_load >= IWL_BT_COEX_TRAFFIC_LOAD_HIGH)
882 return 0;
883
884 for (i = 0; i < RATE_ANT_NUM - 1; i++) {
885 ind = (ind + 1) < RATE_ANT_NUM ? ind + 1 : 0;
886 if (valid & BIT(ind))
887 return ind;
888 }
889 return ant;
890}
891
892#ifdef CONFIG_PM_SLEEP
893static void iwlagn_convert_p1k(u16 *p1k, __le16 *out)
894{
895 int i;
896
897 for (i = 0; i < IWLAGN_P1K_SIZE; i++)
898 out[i] = cpu_to_le16(p1k[i]);
899}
900
901struct wowlan_key_data {
902 struct iwl_rxon_context *ctx;
903 struct iwlagn_wowlan_rsc_tsc_params_cmd *rsc_tsc;
904 struct iwlagn_wowlan_tkip_params_cmd *tkip;
905 const u8 *bssid;
906 bool error, use_rsc_tsc, use_tkip;
907};
908
909
910static void iwlagn_wowlan_program_keys(struct ieee80211_hw *hw,
911 struct ieee80211_vif *vif,
912 struct ieee80211_sta *sta,
913 struct ieee80211_key_conf *key,
914 void *_data)
915{
916 struct iwl_priv *priv = IWL_MAC80211_GET_DVM(hw);
917 struct wowlan_key_data *data = _data;
918 struct iwl_rxon_context *ctx = data->ctx;
919 struct aes_sc *aes_sc, *aes_tx_sc = NULL;
920 struct tkip_sc *tkip_sc, *tkip_tx_sc = NULL;
921 struct iwlagn_p1k_cache *rx_p1ks;
922 u8 *rx_mic_key;
923 struct ieee80211_key_seq seq;
924 u32 cur_rx_iv32 = 0;
925 u16 p1k[IWLAGN_P1K_SIZE];
926 int ret, i;
927
928 mutex_lock(&priv->mutex);
929
930 if ((key->cipher == WLAN_CIPHER_SUITE_WEP40 ||
931 key->cipher == WLAN_CIPHER_SUITE_WEP104) &&
932 !sta && !ctx->key_mapping_keys)
933 ret = iwl_set_default_wep_key(priv, ctx, key);
934 else
935 ret = iwl_set_dynamic_key(priv, ctx, key, sta);
936
937 if (ret) {
938 IWL_ERR(priv, "Error setting key during suspend!\n");
939 data->error = true;
940 }
941
942 switch (key->cipher) {
943 case WLAN_CIPHER_SUITE_TKIP:
944 if (sta) {
945 tkip_sc = data->rsc_tsc->all_tsc_rsc.tkip.unicast_rsc;
946 tkip_tx_sc = &data->rsc_tsc->all_tsc_rsc.tkip.tsc;
947
948 rx_p1ks = data->tkip->rx_uni;
949
950 ieee80211_get_key_tx_seq(key, &seq);
951 tkip_tx_sc->iv16 = cpu_to_le16(seq.tkip.iv16);
952 tkip_tx_sc->iv32 = cpu_to_le32(seq.tkip.iv32);
953
954 ieee80211_get_tkip_p1k_iv(key, seq.tkip.iv32, p1k);
955 iwlagn_convert_p1k(p1k, data->tkip->tx.p1k);
956
957 memcpy(data->tkip->mic_keys.tx,
958 &key->key[NL80211_TKIP_DATA_OFFSET_TX_MIC_KEY],
959 IWLAGN_MIC_KEY_SIZE);
960
961 rx_mic_key = data->tkip->mic_keys.rx_unicast;
962 } else {
963 tkip_sc =
964 data->rsc_tsc->all_tsc_rsc.tkip.multicast_rsc;
965 rx_p1ks = data->tkip->rx_multi;
966 rx_mic_key = data->tkip->mic_keys.rx_mcast;
967 }
968
969 /*
970 * For non-QoS this relies on the fact that both the uCode and
971 * mac80211 use TID 0 (as they need to to avoid replay attacks)
972 * for checking the IV in the frames.
973 */
974 for (i = 0; i < IWLAGN_NUM_RSC; i++) {
975 ieee80211_get_key_rx_seq(key, i, &seq);
976 tkip_sc[i].iv16 = cpu_to_le16(seq.tkip.iv16);
977 tkip_sc[i].iv32 = cpu_to_le32(seq.tkip.iv32);
978 /* wrapping isn't allowed, AP must rekey */
979 if (seq.tkip.iv32 > cur_rx_iv32)
980 cur_rx_iv32 = seq.tkip.iv32;
981 }
982
983 ieee80211_get_tkip_rx_p1k(key, data->bssid, cur_rx_iv32, p1k);
984 iwlagn_convert_p1k(p1k, rx_p1ks[0].p1k);
985 ieee80211_get_tkip_rx_p1k(key, data->bssid,
986 cur_rx_iv32 + 1, p1k);
987 iwlagn_convert_p1k(p1k, rx_p1ks[1].p1k);
988
989 memcpy(rx_mic_key,
990 &key->key[NL80211_TKIP_DATA_OFFSET_RX_MIC_KEY],
991 IWLAGN_MIC_KEY_SIZE);
992
993 data->use_tkip = true;
994 data->use_rsc_tsc = true;
995 break;
996 case WLAN_CIPHER_SUITE_CCMP:
997 if (sta) {
998 u8 *pn = seq.ccmp.pn;
999
1000 aes_sc = data->rsc_tsc->all_tsc_rsc.aes.unicast_rsc;
1001 aes_tx_sc = &data->rsc_tsc->all_tsc_rsc.aes.tsc;
1002
1003 ieee80211_get_key_tx_seq(key, &seq);
1004 aes_tx_sc->pn = cpu_to_le64(
1005 (u64)pn[5] |
1006 ((u64)pn[4] << 8) |
1007 ((u64)pn[3] << 16) |
1008 ((u64)pn[2] << 24) |
1009 ((u64)pn[1] << 32) |
1010 ((u64)pn[0] << 40));
1011 } else
1012 aes_sc = data->rsc_tsc->all_tsc_rsc.aes.multicast_rsc;
1013
1014 /*
1015 * For non-QoS this relies on the fact that both the uCode and
1016 * mac80211 use TID 0 for checking the IV in the frames.
1017 */
1018 for (i = 0; i < IWLAGN_NUM_RSC; i++) {
1019 u8 *pn = seq.ccmp.pn;
1020
1021 ieee80211_get_key_rx_seq(key, i, &seq);
1022 aes_sc->pn = cpu_to_le64(
1023 (u64)pn[5] |
1024 ((u64)pn[4] << 8) |
1025 ((u64)pn[3] << 16) |
1026 ((u64)pn[2] << 24) |
1027 ((u64)pn[1] << 32) |
1028 ((u64)pn[0] << 40));
1029 }
1030 data->use_rsc_tsc = true;
1031 break;
1032 }
1033
1034 mutex_unlock(&priv->mutex);
1035}
1036
1037int iwlagn_send_patterns(struct iwl_priv *priv,
1038 struct cfg80211_wowlan *wowlan)
1039{
1040 struct iwlagn_wowlan_patterns_cmd *pattern_cmd;
1041 struct iwl_host_cmd cmd = {
1042 .id = REPLY_WOWLAN_PATTERNS,
1043 .dataflags[0] = IWL_HCMD_DFL_NOCOPY,
1044 .flags = CMD_SYNC,
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
1079int 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 struct wowlan_key_data key_data = {
1088 .ctx = ctx,
1089 .bssid = ctx->active.bssid_addr,
1090 .use_rsc_tsc = false,
1091 .tkip = &tkip_cmd,
1092 .use_tkip = false,
1093 };
1094 int ret, i;
1095 u16 seq;
1096
1097 key_data.rsc_tsc = kzalloc(sizeof(*key_data.rsc_tsc), GFP_KERNEL);
1098 if (!key_data.rsc_tsc)
1099 return -ENOMEM;
1100
1101 memset(&wakeup_filter_cmd, 0, sizeof(wakeup_filter_cmd));
1102
1103 /*
1104 * We know the last used seqno, and the uCode expects to know that
1105 * one, it will increment before TX.
1106 */
1107 seq = le16_to_cpu(priv->last_seq_ctl) & IEEE80211_SCTL_SEQ;
1108 wakeup_filter_cmd.non_qos_seq = cpu_to_le16(seq);
1109
1110 /*
1111 * For QoS counters, we store the one to use next, so subtract 0x10
1112 * since the uCode will add 0x10 before using the value.
1113 */
1114 for (i = 0; i < IWL_MAX_TID_COUNT; i++) {
1115 seq = priv->tid_data[IWL_AP_ID][i].seq_number;
1116 seq -= 0x10;
1117 wakeup_filter_cmd.qos_seq[i] = cpu_to_le16(seq);
1118 }
1119
1120 if (wowlan->disconnect)
1121 wakeup_filter_cmd.enabled |=
1122 cpu_to_le32(IWLAGN_WOWLAN_WAKEUP_BEACON_MISS |
1123 IWLAGN_WOWLAN_WAKEUP_LINK_CHANGE);
1124 if (wowlan->magic_pkt)
1125 wakeup_filter_cmd.enabled |=
1126 cpu_to_le32(IWLAGN_WOWLAN_WAKEUP_MAGIC_PACKET);
1127 if (wowlan->gtk_rekey_failure)
1128 wakeup_filter_cmd.enabled |=
1129 cpu_to_le32(IWLAGN_WOWLAN_WAKEUP_GTK_REKEY_FAIL);
1130 if (wowlan->eap_identity_req)
1131 wakeup_filter_cmd.enabled |=
1132 cpu_to_le32(IWLAGN_WOWLAN_WAKEUP_EAP_IDENT_REQ);
1133 if (wowlan->four_way_handshake)
1134 wakeup_filter_cmd.enabled |=
1135 cpu_to_le32(IWLAGN_WOWLAN_WAKEUP_4WAY_HANDSHAKE);
1136 if (wowlan->n_patterns)
1137 wakeup_filter_cmd.enabled |=
1138 cpu_to_le32(IWLAGN_WOWLAN_WAKEUP_PATTERN_MATCH);
1139
1140 if (wowlan->rfkill_release)
1141 d3_cfg_cmd.wakeup_flags |=
1142 cpu_to_le32(IWLAGN_D3_WAKEUP_RFKILL);
1143
1144 iwl_scan_cancel_timeout(priv, 200);
1145
1146 memcpy(&rxon, &ctx->active, sizeof(rxon));
1147
1148 priv->ucode_loaded = false;
1149 iwl_trans_stop_device(priv->trans);
1150
1151 priv->wowlan = true;
1152
1153 ret = iwl_load_ucode_wait_alive(priv, IWL_UCODE_WOWLAN);
1154 if (ret)
1155 goto out;
1156
1157 /* now configure WoWLAN ucode */
1158 ret = iwl_alive_start(priv);
1159 if (ret)
1160 goto out;
1161
1162 memcpy(&ctx->staging, &rxon, sizeof(rxon));
1163 ret = iwlagn_commit_rxon(priv, ctx);
1164 if (ret)
1165 goto out;
1166
1167 ret = iwl_power_update_mode(priv, true);
1168 if (ret)
1169 goto out;
1170
1171 if (!iwlwifi_mod_params.sw_crypto) {
1172 /* mark all keys clear */
1173 priv->ucode_key_table = 0;
1174 ctx->key_mapping_keys = 0;
1175
1176 /*
1177 * This needs to be unlocked due to lock ordering
1178 * constraints. Since we're in the suspend path
1179 * that isn't really a problem though.
1180 */
1181 mutex_unlock(&priv->mutex);
1182 ieee80211_iter_keys(priv->hw, ctx->vif,
1183 iwlagn_wowlan_program_keys,
1184 &key_data);
1185 mutex_lock(&priv->mutex);
1186 if (key_data.error) {
1187 ret = -EIO;
1188 goto out;
1189 }
1190
1191 if (key_data.use_rsc_tsc) {
1192 struct iwl_host_cmd rsc_tsc_cmd = {
1193 .id = REPLY_WOWLAN_TSC_RSC_PARAMS,
1194 .flags = CMD_SYNC,
1195 .data[0] = key_data.rsc_tsc,
1196 .dataflags[0] = IWL_HCMD_DFL_NOCOPY,
1197 .len[0] = sizeof(*key_data.rsc_tsc),
1198 };
1199
1200 ret = iwl_dvm_send_cmd(priv, &rsc_tsc_cmd);
1201 if (ret)
1202 goto out;
1203 }
1204
1205 if (key_data.use_tkip) {
1206 ret = iwl_dvm_send_cmd_pdu(priv,
1207 REPLY_WOWLAN_TKIP_PARAMS,
1208 CMD_SYNC, sizeof(tkip_cmd),
1209 &tkip_cmd);
1210 if (ret)
1211 goto out;
1212 }
1213
1214 if (priv->have_rekey_data) {
1215 memset(&kek_kck_cmd, 0, sizeof(kek_kck_cmd));
1216 memcpy(kek_kck_cmd.kck, priv->kck, NL80211_KCK_LEN);
1217 kek_kck_cmd.kck_len = cpu_to_le16(NL80211_KCK_LEN);
1218 memcpy(kek_kck_cmd.kek, priv->kek, NL80211_KEK_LEN);
1219 kek_kck_cmd.kek_len = cpu_to_le16(NL80211_KEK_LEN);
1220 kek_kck_cmd.replay_ctr = priv->replay_ctr;
1221
1222 ret = iwl_dvm_send_cmd_pdu(priv,
1223 REPLY_WOWLAN_KEK_KCK_MATERIAL,
1224 CMD_SYNC, sizeof(kek_kck_cmd),
1225 &kek_kck_cmd);
1226 if (ret)
1227 goto out;
1228 }
1229 }
1230
1231 ret = iwl_dvm_send_cmd_pdu(priv, REPLY_D3_CONFIG, CMD_SYNC,
1232 sizeof(d3_cfg_cmd), &d3_cfg_cmd);
1233 if (ret)
1234 goto out;
1235
1236 ret = iwl_dvm_send_cmd_pdu(priv, REPLY_WOWLAN_WAKEUP_FILTER,
1237 CMD_SYNC, sizeof(wakeup_filter_cmd),
1238 &wakeup_filter_cmd);
1239 if (ret)
1240 goto out;
1241
1242 ret = iwlagn_send_patterns(priv, wowlan);
1243 out:
1244 kfree(key_data.rsc_tsc);
1245 return ret;
1246}
1247#endif
1248
1249int iwl_dvm_send_cmd(struct iwl_priv *priv, struct iwl_host_cmd *cmd)
1250{
1251 if (iwl_is_rfkill(priv) || iwl_is_ctkill(priv)) {
1252 IWL_WARN(priv, "Not sending command - %s KILL\n",
1253 iwl_is_rfkill(priv) ? "RF" : "CT");
1254 return -EIO;
1255 }
1256
1257 if (test_bit(STATUS_FW_ERROR, &priv->status)) {
1258 IWL_ERR(priv, "Command %s failed: FW Error\n",
1259 iwl_dvm_get_cmd_string(cmd->id));
1260 return -EIO;
1261 }
1262
1263 /*
1264 * Synchronous commands from this op-mode must hold
1265 * the mutex, this ensures we don't try to send two
1266 * (or more) synchronous commands at a time.
1267 */
1268 if (cmd->flags & CMD_SYNC)
1269 lockdep_assert_held(&priv->mutex);
1270
1271 if (priv->ucode_owner == IWL_OWNERSHIP_TM &&
1272 !(cmd->flags & CMD_ON_DEMAND)) {
1273 IWL_DEBUG_HC(priv, "tm own the uCode, no regular hcmd send\n");
1274 return -EIO;
1275 }
1276
1277 return iwl_trans_send_cmd(priv->trans, cmd);
1278}
1279
1280int iwl_dvm_send_cmd_pdu(struct iwl_priv *priv, u8 id,
1281 u32 flags, u16 len, const void *data)
1282{
1283 struct iwl_host_cmd cmd = {
1284 .id = id,
1285 .len = { len, },
1286 .data = { data, },
1287 .flags = flags,
1288 };
1289
1290 return iwl_dvm_send_cmd(priv, &cmd);
1291}
generated by cgit v1.2.2 (git 2.25.0) at 2025-01-30 12:13:16 -0500