Merge branch 'for-john' of git://git.kernel.org/pub/scm/linux/kernel/git/iwlwifi/iwlwifi-next

1 files changed, 347 insertions, 0 deletions

diff --git a/drivers/net/wireless/iwlwifi/mvm/bt-coex.c b/drivers/net/wireless/iwlwifi/mvm/bt-coex.c
new file mode 100644
index 000000000000..47954deb6493
--- /dev/null
+++ b/drivers/net/wireless/iwlwifi/mvm/bt-coex.c
@@ -0,0 +1,347 @@
+/******************************************************************************
+ *
+ * This file is provided under a dual BSD/GPLv2 license.  When using or
+ * redistributing this file, you may do so under either license.
+ *
+ * GPL LICENSE SUMMARY
+ *
+ * Copyright(c) 2013 Intel Corporation. All rights reserved.
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of version 2 of the GNU General Public License as
+ * published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope that it will be useful, but
+ * WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110,
+ * USA
+ *
+ * The full GNU General Public License is included in this distribution
+ * in the file called COPYING.
+ *
+ * Contact Information:
+ *  Intel Linux Wireless <ilw@linux.intel.com>
+ * Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497
+ *
+ * BSD LICENSE
+ *
+ * Copyright(c) 2013 Intel Corporation. All rights reserved.
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ *  * Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ *  * Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in
+ *    the documentation and/or other materials provided with the
+ *    distribution.
+ *  * Neither the name Intel Corporation nor the names of its
+ *    contributors may be used to endorse or promote products derived
+ *    from this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+ * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+ * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+ * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+ * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+ * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+ * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ *
+ *****************************************************************************/
+
+#include "fw-api-bt-coex.h"
+#include "iwl-modparams.h"
+#include "mvm.h"
+#include "iwl-debug.h"
+
+#define EVENT_PRIO_ANT(_evt, _prio, _shrd_ant)			\
+	[(_evt)] = (((_prio) << BT_COEX_PRIO_TBL_PRIO_POS) |	\
+		   ((_shrd_ant) << BT_COEX_PRIO_TBL_SHRD_ANT_POS))
+
+static const u8 iwl_bt_prio_tbl[BT_COEX_PRIO_TBL_EVT_MAX] = {
+	EVENT_PRIO_ANT(BT_COEX_PRIO_TBL_EVT_INIT_CALIB1,
+		       BT_COEX_PRIO_TBL_PRIO_BYPASS, 0),
+	EVENT_PRIO_ANT(BT_COEX_PRIO_TBL_EVT_INIT_CALIB2,
+		       BT_COEX_PRIO_TBL_PRIO_BYPASS, 1),
+	EVENT_PRIO_ANT(BT_COEX_PRIO_TBL_EVT_PERIODIC_CALIB_LOW1,
+		       BT_COEX_PRIO_TBL_PRIO_LOW, 0),
+	EVENT_PRIO_ANT(BT_COEX_PRIO_TBL_EVT_PERIODIC_CALIB_LOW2,
+		       BT_COEX_PRIO_TBL_PRIO_LOW, 1),
+	EVENT_PRIO_ANT(BT_COEX_PRIO_TBL_EVT_PERIODIC_CALIB_HIGH1,
+		       BT_COEX_PRIO_TBL_PRIO_HIGH, 0),
+	EVENT_PRIO_ANT(BT_COEX_PRIO_TBL_EVT_PERIODIC_CALIB_HIGH2,
+		       BT_COEX_PRIO_TBL_PRIO_HIGH, 1),
+	EVENT_PRIO_ANT(BT_COEX_PRIO_TBL_EVT_DTIM,
+		       BT_COEX_PRIO_TBL_DISABLED, 0),
+	EVENT_PRIO_ANT(BT_COEX_PRIO_TBL_EVT_SCAN52,
+		       BT_COEX_PRIO_TBL_PRIO_COEX_OFF, 0),
+	EVENT_PRIO_ANT(BT_COEX_PRIO_TBL_EVT_SCAN24,
+		       BT_COEX_PRIO_TBL_PRIO_COEX_ON, 0),
+	EVENT_PRIO_ANT(BT_COEX_PRIO_TBL_EVT_IDLE,
+		       BT_COEX_PRIO_TBL_PRIO_COEX_IDLE, 0),
+	0, 0, 0, 0, 0, 0,
+};
+
+#undef EVENT_PRIO_ANT
+
+int iwl_send_bt_prio_tbl(struct iwl_mvm *mvm)
+{
+	return iwl_mvm_send_cmd_pdu(mvm, BT_COEX_PRIO_TABLE, CMD_SYNC,
+				    sizeof(struct iwl_bt_coex_prio_tbl_cmd),
+				    &iwl_bt_prio_tbl);
+}
+
+static int iwl_send_bt_env(struct iwl_mvm *mvm, u8 action, u8 type)
+{
+	struct iwl_bt_coex_prot_env_cmd env_cmd;
+	int ret;
+
+	env_cmd.action = action;
+	env_cmd.type = type;
+	ret = iwl_mvm_send_cmd_pdu(mvm, BT_COEX_PROT_ENV, CMD_SYNC,
+				   sizeof(env_cmd), &env_cmd);
+	if (ret)
+		IWL_ERR(mvm, "failed to send BT env command\n");
+	return ret;
+}
+
+enum iwl_bt_kill_msk {
+	BT_KILL_MSK_DEFAULT,
+	BT_KILL_MSK_SCO_HID_A2DP,
+	BT_KILL_MSK_REDUCED_TXPOW,
+	BT_KILL_MSK_MAX,
+};
+
+static const u32 iwl_bt_ack_kill_msk[BT_KILL_MSK_MAX] = {
+	0xffffffff,
+	0xfffffc00,
+	0,
+};
+
+static const u32 iwl_bt_cts_kill_msk[BT_KILL_MSK_MAX] = {
+	0xffffffff,
+	0xfffffc00,
+	0,
+};
+
+#define IWL_BT_DEFAULT_BOOST (0xf0f0f0f0)
+
+/* Tight Coex */
+static const __le32 iwl_tight_lookup[BT_COEX_LUT_SIZE] = {
+	cpu_to_le32(0xaaaaaaaa),
+	cpu_to_le32(0xaaaaaaaa),
+	cpu_to_le32(0xaeaaaaaa),
+	cpu_to_le32(0xaaaaaaaa),
+	cpu_to_le32(0xcc00ff28),
+	cpu_to_le32(0x0000aaaa),
+	cpu_to_le32(0xcc00aaaa),
+	cpu_to_le32(0x0000aaaa),
+	cpu_to_le32(0xc0004000),
+	cpu_to_le32(0x00000000),
+	cpu_to_le32(0xf0005000),
+	cpu_to_le32(0xf0005000),
+};
+
+/* Loose Coex */
+static const __le32 iwl_loose_lookup[BT_COEX_LUT_SIZE] = {
+	cpu_to_le32(0xaaaaaaaa),
+	cpu_to_le32(0xaaaaaaaa),
+	cpu_to_le32(0xaeaaaaaa),
+	cpu_to_le32(0xaaaaaaaa),
+	cpu_to_le32(0xcc00ff28),
+	cpu_to_le32(0x0000aaaa),
+	cpu_to_le32(0xcc00aaaa),
+	cpu_to_le32(0x0000aaaa),
+	cpu_to_le32(0x00000000),
+	cpu_to_le32(0x00000000),
+	cpu_to_le32(0xf0005000),
+	cpu_to_le32(0xf0005000),
+};
+
+/* Full concurrency */
+static const __le32 iwl_concurrent_lookup[BT_COEX_LUT_SIZE] = {
+	cpu_to_le32(0xaaaaaaaa),
+	cpu_to_le32(0xaaaaaaaa),
+	cpu_to_le32(0xaaaaaaaa),
+	cpu_to_le32(0xaaaaaaaa),
+	cpu_to_le32(0xaaaaaaaa),
+	cpu_to_le32(0xaaaaaaaa),
+	cpu_to_le32(0xaaaaaaaa),
+	cpu_to_le32(0xaaaaaaaa),
+	cpu_to_le32(0x00000000),
+	cpu_to_le32(0x00000000),
+	cpu_to_le32(0x00000000),
+	cpu_to_le32(0x00000000),
+};
+
+/* BT Antenna Coupling Threshold (dB) */
+#define IWL_BT_ANTENNA_COUPLING_THRESHOLD	(35)
+
+int iwl_send_bt_init_conf(struct iwl_mvm *mvm)
+{
+	struct iwl_bt_coex_cmd cmd = {
+		.max_kill = 5,
+		.bt3_time_t7_value = 1,
+		.bt3_prio_sample_time = 2,
+		.bt3_timer_t2_value = 0xc,
+	};
+	int ret;
+
+	cmd.flags = iwlwifi_mod_params.bt_coex_active ?
+			BT_COEX_NW : BT_COEX_DISABLE;
+	cmd.flags |= iwlwifi_mod_params.bt_ch_announce ?
+			BT_CH_PRIMARY_EN | BT_CH_SECONDARY_EN : 0;
+	cmd.flags |= BT_SYNC_2_BT_DISABLE;
+
+	cmd.valid_bit_msk = cpu_to_le16(BT_VALID_ENABLE |
+					BT_VALID_BT_PRIO_BOOST |
+					BT_VALID_MAX_KILL |
+					BT_VALID_3W_TMRS |
+					BT_VALID_KILL_ACK |
+					BT_VALID_KILL_CTS |
+					BT_VALID_REDUCED_TX_POWER |
+					BT_VALID_LUT);
+
+	if (iwlwifi_mod_params.ant_coupling > IWL_BT_ANTENNA_COUPLING_THRESHOLD)
+		memcpy(&cmd.decision_lut, iwl_loose_lookup,
+		       sizeof(iwl_tight_lookup));
+	else
+		memcpy(&cmd.decision_lut, iwl_tight_lookup,
+		       sizeof(iwl_tight_lookup));
+
+	cmd.bt_prio_boost = cpu_to_le32(IWL_BT_DEFAULT_BOOST);
+	cmd.kill_ack_msk =
+		cpu_to_le32(iwl_bt_ack_kill_msk[BT_KILL_MSK_DEFAULT]);
+	cmd.kill_cts_msk =
+		cpu_to_le32(iwl_bt_cts_kill_msk[BT_KILL_MSK_DEFAULT]);
+
+	/* go to CALIB state in internal BT-Coex state machine */
+	ret = iwl_send_bt_env(mvm, BT_COEX_ENV_OPEN,
+			      BT_COEX_PRIO_TBL_EVT_INIT_CALIB2);
+	if (ret)
+		return ret;
+
+	ret  = iwl_send_bt_env(mvm, BT_COEX_ENV_CLOSE,
+			       BT_COEX_PRIO_TBL_EVT_INIT_CALIB2);
+	if (ret)
+		return ret;
+
+	return iwl_mvm_send_cmd_pdu(mvm, BT_CONFIG, CMD_SYNC,
+				    sizeof(cmd), &cmd);
+}
+
+struct iwl_bt_notif_iterator_data {
+	struct iwl_mvm *mvm;
+	struct iwl_bt_coex_profile_notif *notif;
+};
+
+static void iwl_mvm_bt_notif_iterator(void *_data, u8 *mac,
+				      struct ieee80211_vif *vif)
+{
+	struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
+	struct iwl_bt_notif_iterator_data *data = _data;
+	struct ieee80211_chanctx_conf *chanctx_conf;
+	enum ieee80211_smps_mode smps_mode;
+	enum ieee80211_band band;
+
+	if (vif->type != NL80211_IFTYPE_STATION)
+		return;
+
+	rcu_read_lock();
+	chanctx_conf = rcu_dereference(vif->chanctx_conf);
+	if (chanctx_conf && chanctx_conf->def.chan)
+		band = chanctx_conf->def.chan->band;
+	else
+		band = -1;
+	rcu_read_unlock();
+
+	if (band != IEEE80211_BAND_2GHZ)
+		return;
+
+	smps_mode = IEEE80211_SMPS_AUTOMATIC;
+
+	if (data->notif->bt_status)
+		smps_mode = IEEE80211_SMPS_DYNAMIC;
+
+	if (data->notif->bt_traffic_load)
+		smps_mode = IEEE80211_SMPS_STATIC;
+
+	IWL_DEBUG_COEX(data->mvm,
+		       "mac %d: bt_status %d traffic_load %d smps_req %d\n",
+		       mvmvif->id,  data->notif->bt_status,
+		       data->notif->bt_traffic_load, smps_mode);
+
+	ieee80211_request_smps(vif, smps_mode);
+}
+
+int iwl_mvm_rx_bt_coex_notif(struct iwl_mvm *mvm,
+			     struct iwl_rx_cmd_buffer *rxb,
+			     struct iwl_device_cmd *dev_cmd)
+{
+	struct iwl_rx_packet *pkt = rxb_addr(rxb);
+	struct iwl_bt_coex_profile_notif *notif = (void *)pkt->data;
+	struct iwl_bt_notif_iterator_data data = {
+		.mvm = mvm,
+		.notif = notif,
+	};
+	struct iwl_bt_coex_cmd cmd = {};
+	enum iwl_bt_kill_msk bt_kill_msk;
+
+	IWL_DEBUG_COEX(mvm, "BT Coex Notification received\n");
+	IWL_DEBUG_COEX(mvm, "\tBT %salive\n", notif->bt_status ? "" : "not ");
+	IWL_DEBUG_COEX(mvm, "\tBT open conn %d\n", notif->bt_open_conn);
+	IWL_DEBUG_COEX(mvm, "\tBT traffic load %d\n", notif->bt_traffic_load);
+	IWL_DEBUG_COEX(mvm, "\tBT agg traffic load %d\n",
+		       notif->bt_agg_traffic_load);
+	IWL_DEBUG_COEX(mvm, "\tBT ci compliance %d\n", notif->bt_ci_compliance);
+
+	/* remember this notification for future use: rssi fluctuations */
+	memcpy(&mvm->last_bt_notif, notif, sizeof(mvm->last_bt_notif));
+
+	ieee80211_iterate_active_interfaces_atomic(
+					mvm->hw, IEEE80211_IFACE_ITER_NORMAL,
+					iwl_mvm_bt_notif_iterator, &data);
+
+	/* Low latency BT profile is active: give higher prio to BT */
+	if (BT_MBOX_MSG(notif, 3, SCO_STATE)  ||
+	    BT_MBOX_MSG(notif, 3, A2DP_STATE) ||
+	    BT_MBOX_MSG(notif, 3, SNIFF_STATE))
+		bt_kill_msk = BT_KILL_MSK_SCO_HID_A2DP;
+	else
+		bt_kill_msk = BT_KILL_MSK_DEFAULT;
+
+	/* Don't send HCMD if there is no update */
+	if (bt_kill_msk == mvm->bt_kill_msk)
+		return 0;
+
+	IWL_DEBUG_COEX(mvm,
+		       "Udpate kill_msk: %d\n\t SCO %sactive A2DP %sactive SNIFF %sactive\n",
+		       bt_kill_msk,
+		       BT_MBOX_MSG(notif, 3, SCO_STATE) ? "" : "in",
+		       BT_MBOX_MSG(notif, 3, A2DP_STATE) ? "" : "in",
+		       BT_MBOX_MSG(notif, 3, SNIFF_STATE) ? "" : "in");
+
+	mvm->bt_kill_msk = bt_kill_msk;
+	cmd.kill_ack_msk = cpu_to_le32(iwl_bt_ack_kill_msk[bt_kill_msk]);
+	cmd.kill_cts_msk = cpu_to_le32(iwl_bt_cts_kill_msk[bt_kill_msk]);
+
+	cmd.valid_bit_msk = cpu_to_le16(BT_VALID_KILL_ACK | BT_VALID_KILL_CTS);
+
+	if (iwl_mvm_send_cmd_pdu(mvm, BT_CONFIG, CMD_SYNC, sizeof(cmd), &cmd))
+		IWL_ERR(mvm, "Failed to sent BT Coex CMD\n");
+
+	/* This handler is ASYNC */
+	return 0;
+}