1 /******************************************************************************
5 * Copyright(c) 2008 - 2011 Intel Corporation. All rights reserved.
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.
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.
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,
21 * The full GNU General Public License is included in this distribution
22 * in the file called LICENSE.GPL.
24 * Contact Information:
25 * Intel Linux Wireless <ilw@linux.intel.com>
26 * Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497
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>
38 #include "iwl-helpers.h"
39 #include "iwl-agn-hw.h"
42 #include "iwl-trans.h"
43 #include "iwl-shared.h"
45 int iwlagn_hw_valid_rtc_data_addr(u32 addr)
47 return (addr >= IWLAGN_RTC_DATA_LOWER_BOUND) &&
48 (addr < IWLAGN_RTC_DATA_UPPER_BOUND);
51 int iwlagn_send_tx_power(struct iwl_priv *priv)
53 struct iwlagn_tx_power_dbm_cmd tx_power_cmd;
56 if (WARN_ONCE(test_bit(STATUS_SCAN_HW, &priv->shrd->status),
57 "TX Power requested while scanning!\n"))
60 /* half dBm need to multiply */
61 tx_power_cmd.global_lmt = (s8)(2 * priv->tx_power_user_lmt);
63 if (priv->tx_power_lmt_in_half_dbm &&
64 priv->tx_power_lmt_in_half_dbm < tx_power_cmd.global_lmt) {
66 * For the newer devices which using enhanced/extend tx power
67 * table in EEPROM, the format is in half dBm. driver need to
68 * convert to dBm format before report to mac80211.
69 * By doing so, there is a possibility of 1/2 dBm resolution
70 * lost. driver will perform "round-up" operation before
71 * reporting, but it will cause 1/2 dBm tx power over the
72 * regulatory limit. Perform the checking here, if the
73 * "tx_power_user_lmt" is higher than EEPROM value (in
74 * half-dBm format), lower the tx power based on EEPROM
76 tx_power_cmd.global_lmt = priv->tx_power_lmt_in_half_dbm;
78 tx_power_cmd.flags = IWLAGN_TX_POWER_NO_CLOSED;
79 tx_power_cmd.srv_chan_lmt = IWLAGN_TX_POWER_AUTO;
81 if (IWL_UCODE_API(priv->ucode_ver) == 1)
82 tx_ant_cfg_cmd = REPLY_TX_POWER_DBM_CMD_V1;
84 tx_ant_cfg_cmd = REPLY_TX_POWER_DBM_CMD;
86 return iwl_trans_send_cmd_pdu(trans(priv), tx_ant_cfg_cmd, CMD_SYNC,
87 sizeof(tx_power_cmd), &tx_power_cmd);
90 void iwlagn_temperature(struct iwl_priv *priv)
92 /* store temperature from correct statistics (in Celsius) */
93 priv->temperature = le32_to_cpu(priv->statistics.common.temperature);
97 u16 iwlagn_eeprom_calib_version(struct iwl_priv *priv)
99 struct iwl_eeprom_calib_hdr *hdr;
101 hdr = (struct iwl_eeprom_calib_hdr *)iwl_eeprom_query_addr(priv,
110 static u32 eeprom_indirect_address(const struct iwl_priv *priv, u32 address)
114 if ((address & INDIRECT_ADDRESS) == 0)
117 switch (address & INDIRECT_TYPE_MSK) {
119 offset = iwl_eeprom_query16(priv, EEPROM_LINK_HOST);
121 case INDIRECT_GENERAL:
122 offset = iwl_eeprom_query16(priv, EEPROM_LINK_GENERAL);
124 case INDIRECT_REGULATORY:
125 offset = iwl_eeprom_query16(priv, EEPROM_LINK_REGULATORY);
127 case INDIRECT_TXP_LIMIT:
128 offset = iwl_eeprom_query16(priv, EEPROM_LINK_TXP_LIMIT);
130 case INDIRECT_TXP_LIMIT_SIZE:
131 offset = iwl_eeprom_query16(priv, EEPROM_LINK_TXP_LIMIT_SIZE);
133 case INDIRECT_CALIBRATION:
134 offset = iwl_eeprom_query16(priv, EEPROM_LINK_CALIBRATION);
136 case INDIRECT_PROCESS_ADJST:
137 offset = iwl_eeprom_query16(priv, EEPROM_LINK_PROCESS_ADJST);
139 case INDIRECT_OTHERS:
140 offset = iwl_eeprom_query16(priv, EEPROM_LINK_OTHERS);
143 IWL_ERR(priv, "illegal indirect type: 0x%X\n",
144 address & INDIRECT_TYPE_MSK);
148 /* translate the offset from words to byte */
149 return (address & ADDRESS_MSK) + (offset << 1);
152 const u8 *iwl_eeprom_query_addr(const struct iwl_priv *priv, size_t offset)
154 u32 address = eeprom_indirect_address(priv, offset);
155 BUG_ON(address >= priv->cfg->base_params->eeprom_size);
156 return &priv->eeprom[address];
159 struct iwl_mod_params iwlagn_mod_params = {
163 .bt_coex_active = true,
164 .no_sleep_autoadjust = true,
165 .power_level = IWL_POWER_INDEX_1,
166 .bt_ch_announce = true,
167 .wanted_ucode_alternative = 1,
169 /* the rest are 0 by default */
172 int iwlagn_hwrate_to_mac80211_idx(u32 rate_n_flags, enum ieee80211_band band)
177 /* HT rate format: mac80211 wants an MCS number, which is just LSB */
178 if (rate_n_flags & RATE_MCS_HT_MSK) {
179 idx = (rate_n_flags & 0xff);
181 /* Legacy rate format, search for match in table */
183 if (band == IEEE80211_BAND_5GHZ)
184 band_offset = IWL_FIRST_OFDM_RATE;
185 for (idx = band_offset; idx < IWL_RATE_COUNT_LEGACY; idx++)
186 if (iwl_rates[idx].plcp == (rate_n_flags & 0xFF))
187 return idx - band_offset;
193 int iwlagn_manage_ibss_station(struct iwl_priv *priv,
194 struct ieee80211_vif *vif, bool add)
196 struct iwl_vif_priv *vif_priv = (void *)vif->drv_priv;
199 return iwlagn_add_bssid_station(priv, vif_priv->ctx,
201 &vif_priv->ibss_bssid_sta_id);
202 return iwl_remove_station(priv, vif_priv->ibss_bssid_sta_id,
203 vif->bss_conf.bssid);
207 * iwlagn_txfifo_flush: send REPLY_TXFIFO_FLUSH command to uCode
210 * 1. acquire mutex before calling
211 * 2. make sure rf is on and not in exit state
213 int iwlagn_txfifo_flush(struct iwl_priv *priv, u16 flush_control)
215 struct iwl_txfifo_flush_cmd flush_cmd;
216 struct iwl_host_cmd cmd = {
217 .id = REPLY_TXFIFO_FLUSH,
218 .len = { sizeof(struct iwl_txfifo_flush_cmd), },
220 .data = { &flush_cmd, },
225 memset(&flush_cmd, 0, sizeof(flush_cmd));
226 if (flush_control & BIT(IWL_RXON_CTX_BSS))
227 flush_cmd.fifo_control = IWL_SCD_VO_MSK | IWL_SCD_VI_MSK |
228 IWL_SCD_BE_MSK | IWL_SCD_BK_MSK |
230 if ((flush_control & BIT(IWL_RXON_CTX_PAN)) &&
231 (priv->shrd->valid_contexts != BIT(IWL_RXON_CTX_BSS)))
232 flush_cmd.fifo_control |= IWL_PAN_SCD_VO_MSK |
233 IWL_PAN_SCD_VI_MSK | IWL_PAN_SCD_BE_MSK |
234 IWL_PAN_SCD_BK_MSK | IWL_PAN_SCD_MGMT_MSK |
235 IWL_PAN_SCD_MULTICAST_MSK;
237 if (priv->cfg->sku & EEPROM_SKU_CAP_11N_ENABLE)
238 flush_cmd.fifo_control |= IWL_AGG_TX_QUEUE_MSK;
240 IWL_DEBUG_INFO(priv, "fifo queue control: 0X%x\n",
241 flush_cmd.fifo_control);
242 flush_cmd.flush_control = cpu_to_le16(flush_control);
244 return iwl_trans_send_cmd(trans(priv), &cmd);
247 void iwlagn_dev_txfifo_flush(struct iwl_priv *priv, u16 flush_control)
249 mutex_lock(&priv->shrd->mutex);
250 ieee80211_stop_queues(priv->hw);
251 if (iwlagn_txfifo_flush(priv, IWL_DROP_ALL)) {
252 IWL_ERR(priv, "flush request fail\n");
255 IWL_DEBUG_INFO(priv, "wait transmit/flush all frames\n");
256 iwl_trans_wait_tx_queue_empty(trans(priv));
258 ieee80211_wake_queues(priv->hw);
259 mutex_unlock(&priv->shrd->mutex);
266 * Macros to access the lookup table.
268 * The lookup table has 7 inputs: bt3_prio, bt3_txrx, bt_rf_act, wifi_req,
269 * wifi_prio, wifi_txrx and wifi_sh_ant_req.
271 * It has three outputs: WLAN_ACTIVE, WLAN_KILL and ANT_SWITCH
273 * The format is that "registers" 8 through 11 contain the WLAN_ACTIVE bits
274 * one after another in 32-bit registers, and "registers" 0 through 7 contain
275 * the WLAN_KILL and ANT_SWITCH bits interleaved (in that order).
277 * These macros encode that format.
279 #define LUT_VALUE(bt3_prio, bt3_txrx, bt_rf_act, wifi_req, wifi_prio, \
280 wifi_txrx, wifi_sh_ant_req) \
281 (bt3_prio | (bt3_txrx << 1) | (bt_rf_act << 2) | (wifi_req << 3) | \
282 (wifi_prio << 4) | (wifi_txrx << 5) | (wifi_sh_ant_req << 6))
284 #define LUT_PTA_WLAN_ACTIVE_OP(lut, op, val) \
285 lut[8 + ((val) >> 5)] op (cpu_to_le32(BIT((val) & 0x1f)))
286 #define LUT_TEST_PTA_WLAN_ACTIVE(lut, bt3_prio, bt3_txrx, bt_rf_act, wifi_req, \
287 wifi_prio, wifi_txrx, wifi_sh_ant_req) \
288 (!!(LUT_PTA_WLAN_ACTIVE_OP(lut, &, LUT_VALUE(bt3_prio, bt3_txrx, \
289 bt_rf_act, wifi_req, wifi_prio, wifi_txrx, \
291 #define LUT_SET_PTA_WLAN_ACTIVE(lut, bt3_prio, bt3_txrx, bt_rf_act, wifi_req, \
292 wifi_prio, wifi_txrx, wifi_sh_ant_req) \
293 LUT_PTA_WLAN_ACTIVE_OP(lut, |=, LUT_VALUE(bt3_prio, bt3_txrx, \
294 bt_rf_act, wifi_req, wifi_prio, wifi_txrx, \
296 #define LUT_CLEAR_PTA_WLAN_ACTIVE(lut, bt3_prio, bt3_txrx, bt_rf_act, \
297 wifi_req, wifi_prio, wifi_txrx, \
299 LUT_PTA_WLAN_ACTIVE_OP(lut, &= ~, LUT_VALUE(bt3_prio, bt3_txrx, \
300 bt_rf_act, wifi_req, wifi_prio, wifi_txrx, \
303 #define LUT_WLAN_KILL_OP(lut, op, val) \
304 lut[(val) >> 4] op (cpu_to_le32(BIT(((val) << 1) & 0x1e)))
305 #define LUT_TEST_WLAN_KILL(lut, bt3_prio, bt3_txrx, bt_rf_act, wifi_req, \
306 wifi_prio, wifi_txrx, wifi_sh_ant_req) \
307 (!!(LUT_WLAN_KILL_OP(lut, &, LUT_VALUE(bt3_prio, bt3_txrx, bt_rf_act, \
308 wifi_req, wifi_prio, wifi_txrx, wifi_sh_ant_req))))
309 #define LUT_SET_WLAN_KILL(lut, bt3_prio, bt3_txrx, bt_rf_act, wifi_req, \
310 wifi_prio, wifi_txrx, wifi_sh_ant_req) \
311 LUT_WLAN_KILL_OP(lut, |=, LUT_VALUE(bt3_prio, bt3_txrx, bt_rf_act, \
312 wifi_req, wifi_prio, wifi_txrx, wifi_sh_ant_req))
313 #define LUT_CLEAR_WLAN_KILL(lut, bt3_prio, bt3_txrx, bt_rf_act, wifi_req, \
314 wifi_prio, wifi_txrx, wifi_sh_ant_req) \
315 LUT_WLAN_KILL_OP(lut, &= ~, LUT_VALUE(bt3_prio, bt3_txrx, bt_rf_act, \
316 wifi_req, wifi_prio, wifi_txrx, wifi_sh_ant_req))
318 #define LUT_ANT_SWITCH_OP(lut, op, val) \
319 lut[(val) >> 4] op (cpu_to_le32(BIT((((val) << 1) & 0x1e) + 1)))
320 #define LUT_TEST_ANT_SWITCH(lut, bt3_prio, bt3_txrx, bt_rf_act, wifi_req, \
321 wifi_prio, wifi_txrx, wifi_sh_ant_req) \
322 (!!(LUT_ANT_SWITCH_OP(lut, &, LUT_VALUE(bt3_prio, bt3_txrx, bt_rf_act, \
323 wifi_req, wifi_prio, wifi_txrx, \
325 #define LUT_SET_ANT_SWITCH(lut, bt3_prio, bt3_txrx, bt_rf_act, wifi_req, \
326 wifi_prio, wifi_txrx, wifi_sh_ant_req) \
327 LUT_ANT_SWITCH_OP(lut, |=, LUT_VALUE(bt3_prio, bt3_txrx, bt_rf_act, \
328 wifi_req, wifi_prio, wifi_txrx, wifi_sh_ant_req))
329 #define LUT_CLEAR_ANT_SWITCH(lut, bt3_prio, bt3_txrx, bt_rf_act, wifi_req, \
330 wifi_prio, wifi_txrx, wifi_sh_ant_req) \
331 LUT_ANT_SWITCH_OP(lut, &= ~, LUT_VALUE(bt3_prio, bt3_txrx, bt_rf_act, \
332 wifi_req, wifi_prio, wifi_txrx, wifi_sh_ant_req))
334 static const __le32 iwlagn_def_3w_lookup[12] = {
335 cpu_to_le32(0xaaaaaaaa),
336 cpu_to_le32(0xaaaaaaaa),
337 cpu_to_le32(0xaeaaaaaa),
338 cpu_to_le32(0xaaaaaaaa),
339 cpu_to_le32(0xcc00ff28),
340 cpu_to_le32(0x0000aaaa),
341 cpu_to_le32(0xcc00aaaa),
342 cpu_to_le32(0x0000aaaa),
343 cpu_to_le32(0xc0004000),
344 cpu_to_le32(0x00004000),
345 cpu_to_le32(0xf0005000),
346 cpu_to_le32(0xf0005000),
349 static const __le32 iwlagn_concurrent_lookup[12] = {
350 cpu_to_le32(0xaaaaaaaa),
351 cpu_to_le32(0xaaaaaaaa),
352 cpu_to_le32(0xaaaaaaaa),
353 cpu_to_le32(0xaaaaaaaa),
354 cpu_to_le32(0xaaaaaaaa),
355 cpu_to_le32(0xaaaaaaaa),
356 cpu_to_le32(0xaaaaaaaa),
357 cpu_to_le32(0xaaaaaaaa),
358 cpu_to_le32(0x00000000),
359 cpu_to_le32(0x00000000),
360 cpu_to_le32(0x00000000),
361 cpu_to_le32(0x00000000),
364 void iwlagn_send_advance_bt_config(struct iwl_priv *priv)
366 struct iwl_basic_bt_cmd basic = {
367 .max_kill = IWLAGN_BT_MAX_KILL_DEFAULT,
368 .bt3_timer_t7_value = IWLAGN_BT3_T7_DEFAULT,
369 .bt3_prio_sample_time = IWLAGN_BT3_PRIO_SAMPLE_DEFAULT,
370 .bt3_timer_t2_value = IWLAGN_BT3_T2_DEFAULT,
372 struct iwl6000_bt_cmd bt_cmd_6000;
373 struct iwl2000_bt_cmd bt_cmd_2000;
376 BUILD_BUG_ON(sizeof(iwlagn_def_3w_lookup) !=
377 sizeof(basic.bt3_lookup_table));
379 if (priv->cfg->bt_params) {
380 if (priv->cfg->bt_params->bt_session_2) {
381 bt_cmd_2000.prio_boost = cpu_to_le32(
382 priv->cfg->bt_params->bt_prio_boost);
383 bt_cmd_2000.tx_prio_boost = 0;
384 bt_cmd_2000.rx_prio_boost = 0;
386 bt_cmd_6000.prio_boost =
387 priv->cfg->bt_params->bt_prio_boost;
388 bt_cmd_6000.tx_prio_boost = 0;
389 bt_cmd_6000.rx_prio_boost = 0;
392 IWL_ERR(priv, "failed to construct BT Coex Config\n");
396 basic.kill_ack_mask = priv->kill_ack_mask;
397 basic.kill_cts_mask = priv->kill_cts_mask;
398 basic.valid = priv->bt_valid;
401 * Configure BT coex mode to "no coexistence" when the
402 * user disabled BT coexistence, we have no interface
403 * (might be in monitor mode), or the interface is in
404 * IBSS mode (no proper uCode support for coex then).
406 if (!iwlagn_mod_params.bt_coex_active ||
407 priv->iw_mode == NL80211_IFTYPE_ADHOC) {
408 basic.flags = IWLAGN_BT_FLAG_COEX_MODE_DISABLED;
410 basic.flags = IWLAGN_BT_FLAG_COEX_MODE_3W <<
411 IWLAGN_BT_FLAG_COEX_MODE_SHIFT;
413 if (!priv->bt_enable_pspoll)
414 basic.flags |= IWLAGN_BT_FLAG_SYNC_2_BT_DISABLE;
416 basic.flags &= ~IWLAGN_BT_FLAG_SYNC_2_BT_DISABLE;
418 if (priv->bt_ch_announce)
419 basic.flags |= IWLAGN_BT_FLAG_CHANNEL_INHIBITION;
420 IWL_DEBUG_COEX(priv, "BT coex flag: 0X%x\n", basic.flags);
422 priv->bt_enable_flag = basic.flags;
423 if (priv->bt_full_concurrent)
424 memcpy(basic.bt3_lookup_table, iwlagn_concurrent_lookup,
425 sizeof(iwlagn_concurrent_lookup));
427 memcpy(basic.bt3_lookup_table, iwlagn_def_3w_lookup,
428 sizeof(iwlagn_def_3w_lookup));
430 IWL_DEBUG_COEX(priv, "BT coex %s in %s mode\n",
431 basic.flags ? "active" : "disabled",
432 priv->bt_full_concurrent ?
433 "full concurrency" : "3-wire");
435 if (priv->cfg->bt_params->bt_session_2) {
436 memcpy(&bt_cmd_2000.basic, &basic,
438 ret = iwl_trans_send_cmd_pdu(trans(priv), REPLY_BT_CONFIG,
439 CMD_SYNC, sizeof(bt_cmd_2000), &bt_cmd_2000);
441 memcpy(&bt_cmd_6000.basic, &basic,
443 ret = iwl_trans_send_cmd_pdu(trans(priv), REPLY_BT_CONFIG,
444 CMD_SYNC, sizeof(bt_cmd_6000), &bt_cmd_6000);
447 IWL_ERR(priv, "failed to send BT Coex Config\n");
451 void iwlagn_bt_adjust_rssi_monitor(struct iwl_priv *priv, bool rssi_ena)
453 struct iwl_rxon_context *ctx, *found_ctx = NULL;
454 bool found_ap = false;
456 lockdep_assert_held(&priv->shrd->mutex);
458 /* Check whether AP or GO mode is active. */
460 for_each_context(priv, ctx) {
461 if (ctx->vif && ctx->vif->type == NL80211_IFTYPE_AP &&
462 iwl_is_associated_ctx(ctx)) {
470 * If disable was received or If GO/AP mode, disable RSSI
473 if (!rssi_ena || found_ap) {
474 if (priv->cur_rssi_ctx) {
475 ctx = priv->cur_rssi_ctx;
476 ieee80211_disable_rssi_reports(ctx->vif);
477 priv->cur_rssi_ctx = NULL;
483 * If rssi measurements need to be enabled, consider all cases now.
484 * Figure out how many contexts are active.
486 for_each_context(priv, ctx) {
487 if (ctx->vif && ctx->vif->type == NL80211_IFTYPE_STATION &&
488 iwl_is_associated_ctx(ctx)) {
495 * rssi monitor already enabled for the correct interface...nothing
498 if (found_ctx == priv->cur_rssi_ctx)
502 * Figure out if rssi monitor is currently enabled, and needs
503 * to be changed. If rssi monitor is already enabled, disable
504 * it first else just enable rssi measurements on the
505 * interface found above.
507 if (priv->cur_rssi_ctx) {
508 ctx = priv->cur_rssi_ctx;
510 ieee80211_disable_rssi_reports(ctx->vif);
513 priv->cur_rssi_ctx = found_ctx;
518 ieee80211_enable_rssi_reports(found_ctx->vif,
519 IWLAGN_BT_PSP_MIN_RSSI_THRESHOLD,
520 IWLAGN_BT_PSP_MAX_RSSI_THRESHOLD);
523 static bool iwlagn_bt_traffic_is_sco(struct iwl_bt_uart_msg *uart_msg)
525 return BT_UART_MSG_FRAME3SCOESCO_MSK & uart_msg->frame3 >>
526 BT_UART_MSG_FRAME3SCOESCO_POS;
529 static void iwlagn_bt_traffic_change_work(struct work_struct *work)
531 struct iwl_priv *priv =
532 container_of(work, struct iwl_priv, bt_traffic_change_work);
533 struct iwl_rxon_context *ctx;
534 int smps_request = -1;
536 if (priv->bt_enable_flag == IWLAGN_BT_FLAG_COEX_MODE_DISABLED) {
537 /* bt coex disabled */
542 * Note: bt_traffic_load can be overridden by scan complete and
543 * coex profile notifications. Ignore that since only bad consequence
544 * can be not matching debug print with actual state.
546 IWL_DEBUG_COEX(priv, "BT traffic load changes: %d\n",
547 priv->bt_traffic_load);
549 switch (priv->bt_traffic_load) {
550 case IWL_BT_COEX_TRAFFIC_LOAD_NONE:
552 smps_request = IEEE80211_SMPS_DYNAMIC;
554 smps_request = IEEE80211_SMPS_AUTOMATIC;
556 case IWL_BT_COEX_TRAFFIC_LOAD_LOW:
557 smps_request = IEEE80211_SMPS_DYNAMIC;
559 case IWL_BT_COEX_TRAFFIC_LOAD_HIGH:
560 case IWL_BT_COEX_TRAFFIC_LOAD_CONTINUOUS:
561 smps_request = IEEE80211_SMPS_STATIC;
564 IWL_ERR(priv, "Invalid BT traffic load: %d\n",
565 priv->bt_traffic_load);
569 mutex_lock(&priv->shrd->mutex);
572 * We can not send command to firmware while scanning. When the scan
573 * complete we will schedule this work again. We do check with mutex
574 * locked to prevent new scan request to arrive. We do not check
575 * STATUS_SCANNING to avoid race when queue_work two times from
576 * different notifications, but quit and not perform any work at all.
578 if (test_bit(STATUS_SCAN_HW, &priv->shrd->status))
581 iwl_update_chain_flags(priv);
583 if (smps_request != -1) {
584 priv->current_ht_config.smps = smps_request;
585 for_each_context(priv, ctx) {
586 if (ctx->vif && ctx->vif->type == NL80211_IFTYPE_STATION)
587 ieee80211_request_smps(ctx->vif, smps_request);
592 * Dynamic PS poll related functionality. Adjust RSSI measurements if
595 iwlagn_bt_coex_rssi_monitor(priv);
597 mutex_unlock(&priv->shrd->mutex);
601 * If BT sco traffic, and RSSI monitor is enabled, move measurements to the
602 * correct interface or disable it if this is the last interface to be
605 void iwlagn_bt_coex_rssi_monitor(struct iwl_priv *priv)
607 if (priv->bt_is_sco &&
608 priv->bt_traffic_load == IWL_BT_COEX_TRAFFIC_LOAD_CONTINUOUS)
609 iwlagn_bt_adjust_rssi_monitor(priv, true);
611 iwlagn_bt_adjust_rssi_monitor(priv, false);
614 static void iwlagn_print_uartmsg(struct iwl_priv *priv,
615 struct iwl_bt_uart_msg *uart_msg)
617 IWL_DEBUG_COEX(priv, "Message Type = 0x%X, SSN = 0x%X, "
619 (BT_UART_MSG_FRAME1MSGTYPE_MSK & uart_msg->frame1) >>
620 BT_UART_MSG_FRAME1MSGTYPE_POS,
621 (BT_UART_MSG_FRAME1SSN_MSK & uart_msg->frame1) >>
622 BT_UART_MSG_FRAME1SSN_POS,
623 (BT_UART_MSG_FRAME1UPDATEREQ_MSK & uart_msg->frame1) >>
624 BT_UART_MSG_FRAME1UPDATEREQ_POS);
626 IWL_DEBUG_COEX(priv, "Open connections = 0x%X, Traffic load = 0x%X, "
627 "Chl_SeqN = 0x%X, In band = 0x%X",
628 (BT_UART_MSG_FRAME2OPENCONNECTIONS_MSK & uart_msg->frame2) >>
629 BT_UART_MSG_FRAME2OPENCONNECTIONS_POS,
630 (BT_UART_MSG_FRAME2TRAFFICLOAD_MSK & uart_msg->frame2) >>
631 BT_UART_MSG_FRAME2TRAFFICLOAD_POS,
632 (BT_UART_MSG_FRAME2CHLSEQN_MSK & uart_msg->frame2) >>
633 BT_UART_MSG_FRAME2CHLSEQN_POS,
634 (BT_UART_MSG_FRAME2INBAND_MSK & uart_msg->frame2) >>
635 BT_UART_MSG_FRAME2INBAND_POS);
637 IWL_DEBUG_COEX(priv, "SCO/eSCO = 0x%X, Sniff = 0x%X, A2DP = 0x%X, "
638 "ACL = 0x%X, Master = 0x%X, OBEX = 0x%X",
639 (BT_UART_MSG_FRAME3SCOESCO_MSK & uart_msg->frame3) >>
640 BT_UART_MSG_FRAME3SCOESCO_POS,
641 (BT_UART_MSG_FRAME3SNIFF_MSK & uart_msg->frame3) >>
642 BT_UART_MSG_FRAME3SNIFF_POS,
643 (BT_UART_MSG_FRAME3A2DP_MSK & uart_msg->frame3) >>
644 BT_UART_MSG_FRAME3A2DP_POS,
645 (BT_UART_MSG_FRAME3ACL_MSK & uart_msg->frame3) >>
646 BT_UART_MSG_FRAME3ACL_POS,
647 (BT_UART_MSG_FRAME3MASTER_MSK & uart_msg->frame3) >>
648 BT_UART_MSG_FRAME3MASTER_POS,
649 (BT_UART_MSG_FRAME3OBEX_MSK & uart_msg->frame3) >>
650 BT_UART_MSG_FRAME3OBEX_POS);
652 IWL_DEBUG_COEX(priv, "Idle duration = 0x%X",
653 (BT_UART_MSG_FRAME4IDLEDURATION_MSK & uart_msg->frame4) >>
654 BT_UART_MSG_FRAME4IDLEDURATION_POS);
656 IWL_DEBUG_COEX(priv, "Tx Activity = 0x%X, Rx Activity = 0x%X, "
657 "eSCO Retransmissions = 0x%X",
658 (BT_UART_MSG_FRAME5TXACTIVITY_MSK & uart_msg->frame5) >>
659 BT_UART_MSG_FRAME5TXACTIVITY_POS,
660 (BT_UART_MSG_FRAME5RXACTIVITY_MSK & uart_msg->frame5) >>
661 BT_UART_MSG_FRAME5RXACTIVITY_POS,
662 (BT_UART_MSG_FRAME5ESCORETRANSMIT_MSK & uart_msg->frame5) >>
663 BT_UART_MSG_FRAME5ESCORETRANSMIT_POS);
665 IWL_DEBUG_COEX(priv, "Sniff Interval = 0x%X, Discoverable = 0x%X",
666 (BT_UART_MSG_FRAME6SNIFFINTERVAL_MSK & uart_msg->frame6) >>
667 BT_UART_MSG_FRAME6SNIFFINTERVAL_POS,
668 (BT_UART_MSG_FRAME6DISCOVERABLE_MSK & uart_msg->frame6) >>
669 BT_UART_MSG_FRAME6DISCOVERABLE_POS);
671 IWL_DEBUG_COEX(priv, "Sniff Activity = 0x%X, Page = "
672 "0x%X, Inquiry = 0x%X, Connectable = 0x%X",
673 (BT_UART_MSG_FRAME7SNIFFACTIVITY_MSK & uart_msg->frame7) >>
674 BT_UART_MSG_FRAME7SNIFFACTIVITY_POS,
675 (BT_UART_MSG_FRAME7PAGE_MSK & uart_msg->frame7) >>
676 BT_UART_MSG_FRAME7PAGE_POS,
677 (BT_UART_MSG_FRAME7INQUIRY_MSK & uart_msg->frame7) >>
678 BT_UART_MSG_FRAME7INQUIRY_POS,
679 (BT_UART_MSG_FRAME7CONNECTABLE_MSK & uart_msg->frame7) >>
680 BT_UART_MSG_FRAME7CONNECTABLE_POS);
683 static void iwlagn_set_kill_msk(struct iwl_priv *priv,
684 struct iwl_bt_uart_msg *uart_msg)
687 static const __le32 bt_kill_ack_msg[2] = {
688 IWLAGN_BT_KILL_ACK_MASK_DEFAULT,
689 IWLAGN_BT_KILL_ACK_CTS_MASK_SCO };
690 static const __le32 bt_kill_cts_msg[2] = {
691 IWLAGN_BT_KILL_CTS_MASK_DEFAULT,
692 IWLAGN_BT_KILL_ACK_CTS_MASK_SCO };
694 kill_msk = (BT_UART_MSG_FRAME3SCOESCO_MSK & uart_msg->frame3)
696 if (priv->kill_ack_mask != bt_kill_ack_msg[kill_msk] ||
697 priv->kill_cts_mask != bt_kill_cts_msg[kill_msk]) {
698 priv->bt_valid |= IWLAGN_BT_VALID_KILL_ACK_MASK;
699 priv->kill_ack_mask = bt_kill_ack_msg[kill_msk];
700 priv->bt_valid |= IWLAGN_BT_VALID_KILL_CTS_MASK;
701 priv->kill_cts_mask = bt_kill_cts_msg[kill_msk];
703 /* schedule to send runtime bt_config */
704 queue_work(priv->shrd->workqueue, &priv->bt_runtime_config);
708 void iwlagn_bt_coex_profile_notif(struct iwl_priv *priv,
709 struct iwl_rx_mem_buffer *rxb)
712 struct iwl_rx_packet *pkt = rxb_addr(rxb);
713 struct iwl_bt_coex_profile_notif *coex = &pkt->u.bt_coex_profile_notif;
714 struct iwl_bt_uart_msg *uart_msg = &coex->last_bt_uart_msg;
716 if (priv->bt_enable_flag == IWLAGN_BT_FLAG_COEX_MODE_DISABLED) {
717 /* bt coex disabled */
721 IWL_DEBUG_COEX(priv, "BT Coex notification:\n");
722 IWL_DEBUG_COEX(priv, " status: %d\n", coex->bt_status);
723 IWL_DEBUG_COEX(priv, " traffic load: %d\n", coex->bt_traffic_load);
724 IWL_DEBUG_COEX(priv, " CI compliance: %d\n",
725 coex->bt_ci_compliance);
726 iwlagn_print_uartmsg(priv, uart_msg);
728 priv->last_bt_traffic_load = priv->bt_traffic_load;
729 priv->bt_is_sco = iwlagn_bt_traffic_is_sco(uart_msg);
731 if (priv->iw_mode != NL80211_IFTYPE_ADHOC) {
732 if (priv->bt_status != coex->bt_status ||
733 priv->last_bt_traffic_load != coex->bt_traffic_load) {
734 if (coex->bt_status) {
736 if (!priv->bt_ch_announce)
737 priv->bt_traffic_load =
738 IWL_BT_COEX_TRAFFIC_LOAD_HIGH;
740 priv->bt_traffic_load =
741 coex->bt_traffic_load;
744 priv->bt_traffic_load =
745 IWL_BT_COEX_TRAFFIC_LOAD_NONE;
747 priv->bt_status = coex->bt_status;
748 queue_work(priv->shrd->workqueue,
749 &priv->bt_traffic_change_work);
753 iwlagn_set_kill_msk(priv, uart_msg);
755 /* FIXME: based on notification, adjust the prio_boost */
757 spin_lock_irqsave(&priv->shrd->lock, flags);
758 priv->bt_ci_compliance = coex->bt_ci_compliance;
759 spin_unlock_irqrestore(&priv->shrd->lock, flags);
762 void iwlagn_bt_rx_handler_setup(struct iwl_priv *priv)
764 priv->rx_handlers[REPLY_BT_COEX_PROFILE_NOTIF] =
765 iwlagn_bt_coex_profile_notif;
768 void iwlagn_bt_setup_deferred_work(struct iwl_priv *priv)
770 INIT_WORK(&priv->bt_traffic_change_work,
771 iwlagn_bt_traffic_change_work);
774 void iwlagn_bt_cancel_deferred_work(struct iwl_priv *priv)
776 cancel_work_sync(&priv->bt_traffic_change_work);
779 static bool is_single_rx_stream(struct iwl_priv *priv)
781 return priv->current_ht_config.smps == IEEE80211_SMPS_STATIC ||
782 priv->current_ht_config.single_chain_sufficient;
785 #define IWL_NUM_RX_CHAINS_MULTIPLE 3
786 #define IWL_NUM_RX_CHAINS_SINGLE 2
787 #define IWL_NUM_IDLE_CHAINS_DUAL 2
788 #define IWL_NUM_IDLE_CHAINS_SINGLE 1
791 * Determine how many receiver/antenna chains to use.
793 * More provides better reception via diversity. Fewer saves power
794 * at the expense of throughput, but only when not in powersave to
797 * MIMO (dual stream) requires at least 2, but works better with 3.
798 * This does not determine *which* chains to use, just how many.
800 static int iwl_get_active_rx_chain_count(struct iwl_priv *priv)
802 if (priv->cfg->bt_params &&
803 priv->cfg->bt_params->advanced_bt_coexist &&
804 (priv->bt_full_concurrent ||
805 priv->bt_traffic_load >= IWL_BT_COEX_TRAFFIC_LOAD_HIGH)) {
807 * only use chain 'A' in bt high traffic load or
808 * full concurrency mode
810 return IWL_NUM_RX_CHAINS_SINGLE;
812 /* # of Rx chains to use when expecting MIMO. */
813 if (is_single_rx_stream(priv))
814 return IWL_NUM_RX_CHAINS_SINGLE;
816 return IWL_NUM_RX_CHAINS_MULTIPLE;
820 * When we are in power saving mode, unless device support spatial
821 * multiplexing power save, use the active count for rx chain count.
823 static int iwl_get_idle_rx_chain_count(struct iwl_priv *priv, int active_cnt)
825 /* # Rx chains when idling, depending on SMPS mode */
826 switch (priv->current_ht_config.smps) {
827 case IEEE80211_SMPS_STATIC:
828 case IEEE80211_SMPS_DYNAMIC:
829 return IWL_NUM_IDLE_CHAINS_SINGLE;
830 case IEEE80211_SMPS_OFF:
833 WARN(1, "invalid SMPS mode %d",
834 priv->current_ht_config.smps);
840 static u8 iwl_count_chain_bitmap(u32 chain_bitmap)
843 res = (chain_bitmap & BIT(0)) >> 0;
844 res += (chain_bitmap & BIT(1)) >> 1;
845 res += (chain_bitmap & BIT(2)) >> 2;
846 res += (chain_bitmap & BIT(3)) >> 3;
851 * iwlagn_set_rxon_chain - Set up Rx chain usage in "staging" RXON image
853 * Selects how many and which Rx receivers/antennas/chains to use.
854 * This should not be used for scan command ... it puts data in wrong place.
856 void iwlagn_set_rxon_chain(struct iwl_priv *priv, struct iwl_rxon_context *ctx)
858 bool is_single = is_single_rx_stream(priv);
859 bool is_cam = !test_bit(STATUS_POWER_PMI, &priv->shrd->status);
860 u8 idle_rx_cnt, active_rx_cnt, valid_rx_cnt;
864 /* Tell uCode which antennas are actually connected.
865 * Before first association, we assume all antennas are connected.
866 * Just after first association, iwl_chain_noise_calibration()
867 * checks which antennas actually *are* connected. */
868 if (priv->chain_noise_data.active_chains)
869 active_chains = priv->chain_noise_data.active_chains;
871 active_chains = hw_params(priv).valid_rx_ant;
873 if (priv->cfg->bt_params &&
874 priv->cfg->bt_params->advanced_bt_coexist &&
875 (priv->bt_full_concurrent ||
876 priv->bt_traffic_load >= IWL_BT_COEX_TRAFFIC_LOAD_HIGH)) {
878 * only use chain 'A' in bt high traffic load or
879 * full concurrency mode
881 active_chains = first_antenna(active_chains);
884 rx_chain = active_chains << RXON_RX_CHAIN_VALID_POS;
886 /* How many receivers should we use? */
887 active_rx_cnt = iwl_get_active_rx_chain_count(priv);
888 idle_rx_cnt = iwl_get_idle_rx_chain_count(priv, active_rx_cnt);
891 /* correct rx chain count according hw settings
892 * and chain noise calibration
894 valid_rx_cnt = iwl_count_chain_bitmap(active_chains);
895 if (valid_rx_cnt < active_rx_cnt)
896 active_rx_cnt = valid_rx_cnt;
898 if (valid_rx_cnt < idle_rx_cnt)
899 idle_rx_cnt = valid_rx_cnt;
901 rx_chain |= active_rx_cnt << RXON_RX_CHAIN_MIMO_CNT_POS;
902 rx_chain |= idle_rx_cnt << RXON_RX_CHAIN_CNT_POS;
904 ctx->staging.rx_chain = cpu_to_le16(rx_chain);
906 if (!is_single && (active_rx_cnt >= IWL_NUM_RX_CHAINS_SINGLE) && is_cam)
907 ctx->staging.rx_chain |= RXON_RX_CHAIN_MIMO_FORCE_MSK;
909 ctx->staging.rx_chain &= ~RXON_RX_CHAIN_MIMO_FORCE_MSK;
911 IWL_DEBUG_ASSOC(priv, "rx_chain=0x%X active=%d idle=%d\n",
912 ctx->staging.rx_chain,
913 active_rx_cnt, idle_rx_cnt);
915 WARN_ON(active_rx_cnt == 0 || idle_rx_cnt == 0 ||
916 active_rx_cnt < idle_rx_cnt);
919 u8 iwl_toggle_tx_ant(struct iwl_priv *priv, u8 ant, u8 valid)
924 if (priv->band == IEEE80211_BAND_2GHZ &&
925 priv->bt_traffic_load >= IWL_BT_COEX_TRAFFIC_LOAD_HIGH)
928 for (i = 0; i < RATE_ANT_NUM - 1; i++) {
929 ind = (ind + 1) < RATE_ANT_NUM ? ind + 1 : 0;
930 if (valid & BIT(ind))
936 /* notification wait support */
937 void iwlagn_init_notification_wait(struct iwl_priv *priv,
938 struct iwl_notification_wait *wait_entry,
940 void (*fn)(struct iwl_priv *priv,
941 struct iwl_rx_packet *pkt,
946 wait_entry->fn_data = fn_data;
947 wait_entry->cmd = cmd;
948 wait_entry->triggered = false;
949 wait_entry->aborted = false;
951 spin_lock_bh(&priv->notif_wait_lock);
952 list_add(&wait_entry->list, &priv->notif_waits);
953 spin_unlock_bh(&priv->notif_wait_lock);
956 int iwlagn_wait_notification(struct iwl_priv *priv,
957 struct iwl_notification_wait *wait_entry,
958 unsigned long timeout)
962 ret = wait_event_timeout(priv->notif_waitq,
963 wait_entry->triggered || wait_entry->aborted,
966 spin_lock_bh(&priv->notif_wait_lock);
967 list_del(&wait_entry->list);
968 spin_unlock_bh(&priv->notif_wait_lock);
970 if (wait_entry->aborted)
973 /* return value is always >= 0 */
979 void iwlagn_remove_notification(struct iwl_priv *priv,
980 struct iwl_notification_wait *wait_entry)
982 spin_lock_bh(&priv->notif_wait_lock);
983 list_del(&wait_entry->list);
984 spin_unlock_bh(&priv->notif_wait_lock);