[mirror_ubuntu-bionic-kernel.git] / drivers / net / wireless / intel / iwlwifi / mvm / phy-ctxt.c

/******************************************************************************
 *
 * 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) 2012 - 2014 Intel Corporation. All rights reserved.
 * Copyright(c) 2013 - 2014 Intel Mobile Communications GmbH
 * Copyright(c) 2017           Intel Deutschland GmbH
 *
 * 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 <linuxwifi@intel.com>
 * Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497
 *
 * BSD LICENSE
 *
 * Copyright(c) 2012 - 2014 Intel Corporation. All rights reserved.
 * Copyright(c) 2013 - 2014 Intel Mobile Communications GmbH
 * 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 <net/mac80211.h>
#include "fw-api.h"
#include "mvm.h"

/* Maps the driver specific channel width definition to the fw values */
u8 iwl_mvm_get_channel_width(struct cfg80211_chan_def *chandef)
{
	switch (chandef->width) {
	case NL80211_CHAN_WIDTH_20_NOHT:
	case NL80211_CHAN_WIDTH_20:
		return PHY_VHT_CHANNEL_MODE20;
	case NL80211_CHAN_WIDTH_40:
		return PHY_VHT_CHANNEL_MODE40;
	case NL80211_CHAN_WIDTH_80:
		return PHY_VHT_CHANNEL_MODE80;
	case NL80211_CHAN_WIDTH_160:
		return PHY_VHT_CHANNEL_MODE160;
	default:
		WARN(1, "Invalid channel width=%u", chandef->width);
		return PHY_VHT_CHANNEL_MODE20;
	}
}

/*
 * Maps the driver specific control channel position (relative to the center
 * freq) definitions to the the fw values
 */
u8 iwl_mvm_get_ctrl_pos(struct cfg80211_chan_def *chandef)
{
	switch (chandef->chan->center_freq - chandef->center_freq1) {
	case -70:
		return PHY_VHT_CTRL_POS_4_BELOW;
	case -50:
		return PHY_VHT_CTRL_POS_3_BELOW;
	case -30:
		return PHY_VHT_CTRL_POS_2_BELOW;
	case -10:
		return PHY_VHT_CTRL_POS_1_BELOW;
	case  10:
		return PHY_VHT_CTRL_POS_1_ABOVE;
	case  30:
		return PHY_VHT_CTRL_POS_2_ABOVE;
	case  50:
		return PHY_VHT_CTRL_POS_3_ABOVE;
	case  70:
		return PHY_VHT_CTRL_POS_4_ABOVE;
	default:
		WARN(1, "Invalid channel definition");
	case 0:
		/*
		 * The FW is expected to check the control channel position only
		 * when in HT/VHT and the channel width is not 20MHz. Return
		 * this value as the default one.
		 */
		return PHY_VHT_CTRL_POS_1_BELOW;
	}
}

/*
 * Construct the generic fields of the PHY context command
 */
static void iwl_mvm_phy_ctxt_cmd_hdr(struct iwl_mvm_phy_ctxt *ctxt,
				     struct iwl_phy_context_cmd *cmd,
				     u32 action, u32 apply_time)
{
	memset(cmd, 0, sizeof(struct iwl_phy_context_cmd));

	cmd->id_and_color = cpu_to_le32(FW_CMD_ID_AND_COLOR(ctxt->id,
							    ctxt->color));
	cmd->action = cpu_to_le32(action);
	cmd->apply_time = cpu_to_le32(apply_time);
}

/*
 * Add the phy configuration to the PHY context command
 */
static void iwl_mvm_phy_ctxt_cmd_data(struct iwl_mvm *mvm,
				      struct iwl_phy_context_cmd *cmd,
				      struct cfg80211_chan_def *chandef,
				      u8 chains_static, u8 chains_dynamic)
{
	u8 active_cnt, idle_cnt;

	/* Set the channel info data */
	cmd->ci.band = (chandef->chan->band == NL80211_BAND_2GHZ ?
	      PHY_BAND_24 : PHY_BAND_5);

	cmd->ci.channel = chandef->chan->hw_value;
	cmd->ci.width = iwl_mvm_get_channel_width(chandef);
	cmd->ci.ctrl_pos = iwl_mvm_get_ctrl_pos(chandef);

	/* Set rx the chains */
	idle_cnt = chains_static;
	active_cnt = chains_dynamic;

	/* In scenarios where we only ever use a single-stream rates,
	 * i.e. legacy 11b/g/a associations, single-stream APs or even
	 * static SMPS, enable both chains to get diversity, improving
	 * the case where we're far enough from the AP that attenuation
	 * between the two antennas is sufficiently different to impact
	 * performance.
	 */
	if (active_cnt == 1 && iwl_mvm_rx_diversity_allowed(mvm)) {
		idle_cnt = 2;
		active_cnt = 2;
	}

	cmd->rxchain_info = cpu_to_le32(iwl_mvm_get_valid_rx_ant(mvm) <<
					PHY_RX_CHAIN_VALID_POS);
	cmd->rxchain_info |= cpu_to_le32(idle_cnt << PHY_RX_CHAIN_CNT_POS);
	cmd->rxchain_info |= cpu_to_le32(active_cnt <<
					 PHY_RX_CHAIN_MIMO_CNT_POS);
#ifdef CONFIG_IWLWIFI_DEBUGFS
	if (unlikely(mvm->dbgfs_rx_phyinfo))
		cmd->rxchain_info = cpu_to_le32(mvm->dbgfs_rx_phyinfo);
#endif

	cmd->txchain_info = cpu_to_le32(iwl_mvm_get_valid_tx_ant(mvm));
}

/*
 * Send a command to apply the current phy configuration. The command is send
 * only if something in the configuration changed: in case that this is the
 * first time that the phy configuration is applied or in case that the phy
 * configuration changed from the previous apply.
 */
static int iwl_mvm_phy_ctxt_apply(struct iwl_mvm *mvm,
				  struct iwl_mvm_phy_ctxt *ctxt,
				  struct cfg80211_chan_def *chandef,
				  u8 chains_static, u8 chains_dynamic,
				  u32 action, u32 apply_time)
{
	struct iwl_phy_context_cmd cmd;
	int ret;

	/* Set the command header fields */
	iwl_mvm_phy_ctxt_cmd_hdr(ctxt, &cmd, action, apply_time);

	/* Set the command data */
	iwl_mvm_phy_ctxt_cmd_data(mvm, &cmd, chandef,
				  chains_static, chains_dynamic);

	ret = iwl_mvm_send_cmd_pdu(mvm, PHY_CONTEXT_CMD, 0,
				   sizeof(struct iwl_phy_context_cmd),
				   &cmd);
	if (ret)
		IWL_ERR(mvm, "PHY ctxt cmd error. ret=%d\n", ret);
	return ret;
}

/*
 * Send a command to add a PHY context based on the current HW configuration.
 */
int iwl_mvm_phy_ctxt_add(struct iwl_mvm *mvm, struct iwl_mvm_phy_ctxt *ctxt,
			 struct cfg80211_chan_def *chandef,
			 u8 chains_static, u8 chains_dynamic)
{
	WARN_ON(!test_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status) &&
		ctxt->ref);
	lockdep_assert_held(&mvm->mutex);

	ctxt->channel = chandef->chan;

	return iwl_mvm_phy_ctxt_apply(mvm, ctxt, chandef,
				      chains_static, chains_dynamic,
				      FW_CTXT_ACTION_ADD, 0);
}

/*
 * Update the number of references to the given PHY context. This is valid only
 * in case the PHY context was already created, i.e., its reference count > 0.
 */
void iwl_mvm_phy_ctxt_ref(struct iwl_mvm *mvm, struct iwl_mvm_phy_ctxt *ctxt)
{
	lockdep_assert_held(&mvm->mutex);
	ctxt->ref++;
}

/*
 * Send a command to modify the PHY context based on the current HW
 * configuration. Note that the function does not check that the configuration
 * changed.
 */
int iwl_mvm_phy_ctxt_changed(struct iwl_mvm *mvm, struct iwl_mvm_phy_ctxt *ctxt,
			     struct cfg80211_chan_def *chandef,
			     u8 chains_static, u8 chains_dynamic)
{
	enum iwl_phy_ctxt_action action = FW_CTXT_ACTION_MODIFY;

	lockdep_assert_held(&mvm->mutex);

	if (fw_has_capa(&mvm->fw->ucode_capa,
			IWL_UCODE_TLV_CAPA_BINDING_CDB_SUPPORT) &&
	    ctxt->channel->band != chandef->chan->band) {
		int ret;

		/* ... remove it here ...*/
		ret = iwl_mvm_phy_ctxt_apply(mvm, ctxt, chandef,
					     chains_static, chains_dynamic,
					     FW_CTXT_ACTION_REMOVE, 0);
		if (ret)
			return ret;

		/* ... and proceed to add it again */
		action = FW_CTXT_ACTION_ADD;
	}

	ctxt->channel = chandef->chan;
	return iwl_mvm_phy_ctxt_apply(mvm, ctxt, chandef,
				      chains_static, chains_dynamic,
				      action, 0);
}

void iwl_mvm_phy_ctxt_unref(struct iwl_mvm *mvm, struct iwl_mvm_phy_ctxt *ctxt)
{
	lockdep_assert_held(&mvm->mutex);

	if (WARN_ON_ONCE(!ctxt))
		return;

	ctxt->ref--;
}

static void iwl_mvm_binding_iterator(void *_data, u8 *mac,
				     struct ieee80211_vif *vif)
{
	unsigned long *data = _data;
	struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);

	if (!mvmvif->phy_ctxt)
		return;

	if (vif->type == NL80211_IFTYPE_STATION ||
	    vif->type == NL80211_IFTYPE_AP)
		__set_bit(mvmvif->phy_ctxt->id, data);
}

int iwl_mvm_phy_ctx_count(struct iwl_mvm *mvm)
{
	unsigned long phy_ctxt_counter = 0;

	ieee80211_iterate_active_interfaces_atomic(mvm->hw,
						   IEEE80211_IFACE_ITER_NORMAL,
						   iwl_mvm_binding_iterator,
						   &phy_ctxt_counter);

	return hweight8(phy_ctxt_counter);
}
Commit	Line	Data
8ca151b5 JB	1	/******************************************************************************
	2	*
	3	* This file is provided under a dual BSD/GPLv2 license. When using or
	4	* redistributing this file, you may do so under either license.
	5	*
	6	* GPL LICENSE SUMMARY
	7	*
51368bf7	8	* Copyright(c) 2012 - 2014 Intel Corporation. All rights reserved.
8b4139dc	9	* Copyright(c) 2013 - 2014 Intel Mobile Communications GmbH
730a1891	10	* Copyright(c) 2017 Intel Deutschland GmbH
8ca151b5 JB	11	*
	12	* This program is free software; you can redistribute it and/or modify
	13	* it under the terms of version 2 of the GNU General Public License as
	14	* published by the Free Software Foundation.
	15	*
	16	* This program is distributed in the hope that it will be useful, but
	17	* WITHOUT ANY WARRANTY; without even the implied warranty of
	18	* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
	19	* General Public License for more details.
	20	*
	21	* You should have received a copy of the GNU General Public License
	22	* along with this program; if not, write to the Free Software
	23	* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110,
	24	* USA
	25	*
	26	* The full GNU General Public License is included in this distribution
410dc5aa	27	* in the file called COPYING.
8ca151b5 JB	28	*
8ca151b5 JB	29	* Contact Information:
cb2f8277	30	* Intel Linux Wireless <linuxwifi@intel.com>
8ca151b5 JB	31	* Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497
	32	*
	33	* BSD LICENSE
	34	*
51368bf7	35	* Copyright(c) 2012 - 2014 Intel Corporation. All rights reserved.
8b4139dc	36	* Copyright(c) 2013 - 2014 Intel Mobile Communications GmbH
8ca151b5 JB	37	* All rights reserved.
	38	*
	39	* Redistribution and use in source and binary forms, with or without
	40	* modification, are permitted provided that the following conditions
	41	* are met:
	42	*
	43	* * Redistributions of source code must retain the above copyright
	44	* notice, this list of conditions and the following disclaimer.
	45	* * Redistributions in binary form must reproduce the above copyright
	46	* notice, this list of conditions and the following disclaimer in
	47	* the documentation and/or other materials provided with the
	48	* distribution.
	49	* * Neither the name Intel Corporation nor the names of its
	50	* contributors may be used to endorse or promote products derived
	51	* from this software without specific prior written permission.
	52	*
	53	* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
	54	* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
	55	* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
	56	* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
	57	* OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
	58	* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
	59	* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
	60	* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
	61	* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
	62	* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
	63	* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
	64	*
	65	*****************************************************************************/
	66
	67	#include <net/mac80211.h>
	68	#include "fw-api.h"
	69	#include "mvm.h"
	70
0d365ae5	71	/* Maps the driver specific channel width definition to the fw values */
6ce73e65	72	u8 iwl_mvm_get_channel_width(struct cfg80211_chan_def *chandef)
8ca151b5 JB	73	{
	74	switch (chandef->width) {
	75	case NL80211_CHAN_WIDTH_20_NOHT:
	76	case NL80211_CHAN_WIDTH_20:
	77	return PHY_VHT_CHANNEL_MODE20;
	78	case NL80211_CHAN_WIDTH_40:
	79	return PHY_VHT_CHANNEL_MODE40;
	80	case NL80211_CHAN_WIDTH_80:
	81	return PHY_VHT_CHANNEL_MODE80;
	82	case NL80211_CHAN_WIDTH_160:
	83	return PHY_VHT_CHANNEL_MODE160;
	84	default:
	85	WARN(1, "Invalid channel width=%u", chandef->width);
	86	return PHY_VHT_CHANNEL_MODE20;
	87	}
	88	}
	89
	90	/*
	91	* Maps the driver specific control channel position (relative to the center
	92	* freq) definitions to the the fw values
	93	*/
6ce73e65	94	u8 iwl_mvm_get_ctrl_pos(struct cfg80211_chan_def *chandef)
8ca151b5 JB	95	{
	96	switch (chandef->chan->center_freq - chandef->center_freq1) {
	97	case -70:
	98	return PHY_VHT_CTRL_POS_4_BELOW;
	99	case -50:
	100	return PHY_VHT_CTRL_POS_3_BELOW;
	101	case -30:
	102	return PHY_VHT_CTRL_POS_2_BELOW;
	103	case -10:
	104	return PHY_VHT_CTRL_POS_1_BELOW;
	105	case 10:
	106	return PHY_VHT_CTRL_POS_1_ABOVE;
	107	case 30:
	108	return PHY_VHT_CTRL_POS_2_ABOVE;
	109	case 50:
	110	return PHY_VHT_CTRL_POS_3_ABOVE;
	111	case 70:
	112	return PHY_VHT_CTRL_POS_4_ABOVE;
	113	default:
	114	WARN(1, "Invalid channel definition");
	115	case 0:
	116	/*
	117	* The FW is expected to check the control channel position only
	118	* when in HT/VHT and the channel width is not 20MHz. Return
	119	* this value as the default one.
	120	*/
	121	return PHY_VHT_CTRL_POS_1_BELOW;
	122	}
	123	}
	124
	125	/*
	126	* Construct the generic fields of the PHY context command
	127	*/
	128	static void iwl_mvm_phy_ctxt_cmd_hdr(struct iwl_mvm_phy_ctxt *ctxt,
	129	struct iwl_phy_context_cmd *cmd,
	130	u32 action, u32 apply_time)
	131	{
	132	memset(cmd, 0, sizeof(struct iwl_phy_context_cmd));
	133
	134	cmd->id_and_color = cpu_to_le32(FW_CMD_ID_AND_COLOR(ctxt->id,
	135	ctxt->color));
	136	cmd->action = cpu_to_le32(action);
	137	cmd->apply_time = cpu_to_le32(apply_time);
	138	}
	139
	140	/*
	141	* Add the phy configuration to the PHY context command
	142	*/
	143	static void iwl_mvm_phy_ctxt_cmd_data(struct iwl_mvm *mvm,
	144	struct iwl_phy_context_cmd *cmd,
	145	struct cfg80211_chan_def *chandef,
	146	u8 chains_static, u8 chains_dynamic)
	147	{
33223542	148	u8 active_cnt, idle_cnt;
8ca151b5 JB	149
8ca151b5 JB	150	/* Set the channel info data */
57fbcce3	151	cmd->ci.band = (chandef->chan->band == NL80211_BAND_2GHZ ?
8ca151b5 JB	152	PHY_BAND_24 : PHY_BAND_5);
	153
	154	cmd->ci.channel = chandef->chan->hw_value;
	155	cmd->ci.width = iwl_mvm_get_channel_width(chandef);
	156	cmd->ci.ctrl_pos = iwl_mvm_get_ctrl_pos(chandef);
	157
	158	/* Set rx the chains */
8ca151b5 JB	159	idle_cnt = chains_static;
	160	active_cnt = chains_dynamic;
	161
1a095d30 JB	162	/* In scenarios where we only ever use a single-stream rates,
	163	* i.e. legacy 11b/g/a associations, single-stream APs or even
	164	* static SMPS, enable both chains to get diversity, improving
	165	* the case where we're far enough from the AP that attenuation
	166	* between the two antennas is sufficiently different to impact
	167	* performance.
	168	*/
5c904224	169	if (active_cnt == 1 && iwl_mvm_rx_diversity_allowed(mvm)) {
1a095d30 JB	170	idle_cnt = 2;
	171	active_cnt = 2;
	172	}
	173
0b83795a	174	cmd->rxchain_info = cpu_to_le32(iwl_mvm_get_valid_rx_ant(mvm) <<
8ca151b5 JB	175	PHY_RX_CHAIN_VALID_POS);
	176	cmd->rxchain_info \|= cpu_to_le32(idle_cnt << PHY_RX_CHAIN_CNT_POS);
	177	cmd->rxchain_info \|= cpu_to_le32(active_cnt <<
	178	PHY_RX_CHAIN_MIMO_CNT_POS);
aa5e1832	179	#ifdef CONFIG_IWLWIFI_DEBUGFS
ddf89ab1 EG	180	if (unlikely(mvm->dbgfs_rx_phyinfo))
ddf89ab1 EG	181	cmd->rxchain_info = cpu_to_le32(mvm->dbgfs_rx_phyinfo);
aa5e1832	182	#endif
8ca151b5	183
a0544272	184	cmd->txchain_info = cpu_to_le32(iwl_mvm_get_valid_tx_ant(mvm));
8ca151b5 JB	185	}
	186
	187	/*
	188	* Send a command to apply the current phy configuration. The command is send
	189	* only if something in the configuration changed: in case that this is the
	190	* first time that the phy configuration is applied or in case that the phy
	191	* configuration changed from the previous apply.
	192	*/
	193	static int iwl_mvm_phy_ctxt_apply(struct iwl_mvm *mvm,
	194	struct iwl_mvm_phy_ctxt *ctxt,
	195	struct cfg80211_chan_def *chandef,
	196	u8 chains_static, u8 chains_dynamic,
	197	u32 action, u32 apply_time)
	198	{
	199	struct iwl_phy_context_cmd cmd;
	200	int ret;
	201
	202	/* Set the command header fields */
	203	iwl_mvm_phy_ctxt_cmd_hdr(ctxt, &cmd, action, apply_time);
	204
	205	/* Set the command data */
	206	iwl_mvm_phy_ctxt_cmd_data(mvm, &cmd, chandef,
	207	chains_static, chains_dynamic);
	208
a1022927	209	ret = iwl_mvm_send_cmd_pdu(mvm, PHY_CONTEXT_CMD, 0,
8ca151b5 JB	210	sizeof(struct iwl_phy_context_cmd),
	211	&cmd);
	212	if (ret)
	213	IWL_ERR(mvm, "PHY ctxt cmd error. ret=%d\n", ret);
	214	return ret;
	215	}
	216
8ca151b5 JB	217	/*
	218	* Send a command to add a PHY context based on the current HW configuration.
	219	*/
	220	int iwl_mvm_phy_ctxt_add(struct iwl_mvm mvm, struct iwl_mvm_phy_ctxt ctxt,
	221	struct cfg80211_chan_def *chandef,
	222	u8 chains_static, u8 chains_dynamic)
	223	{
debff618 JB	224	WARN_ON(!test_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status) &&
debff618 JB	225	ctxt->ref);
8ca151b5	226	lockdep_assert_held(&mvm->mutex);
8ca151b5	227
fe0f2de3	228	ctxt->channel = chandef->chan;
8ca151b5	229
7a531741 JB	230	return iwl_mvm_phy_ctxt_apply(mvm, ctxt, chandef,
	231	chains_static, chains_dynamic,
	232	FW_CTXT_ACTION_ADD, 0);
fe0f2de3	233	}
8ca151b5	234
fe0f2de3 IP	235	/*
	236	* Update the number of references to the given PHY context. This is valid only
	237	* in case the PHY context was already created, i.e., its reference count > 0.
	238	*/
	239	void iwl_mvm_phy_ctxt_ref(struct iwl_mvm mvm, struct iwl_mvm_phy_ctxt ctxt)
	240	{
fe0f2de3	241	lockdep_assert_held(&mvm->mutex);
fe0f2de3	242	ctxt->ref++;
8ca151b5 JB	243	}
	244
	245	/*
	246	* Send a command to modify the PHY context based on the current HW
	247	* configuration. Note that the function does not check that the configuration
	248	* changed.
	249	*/
	250	int iwl_mvm_phy_ctxt_changed(struct iwl_mvm mvm, struct iwl_mvm_phy_ctxt ctxt,
	251	struct cfg80211_chan_def *chandef,
	252	u8 chains_static, u8 chains_dynamic)
	253	{
730a1891 SS	254	enum iwl_phy_ctxt_action action = FW_CTXT_ACTION_MODIFY;
730a1891 SS	255
8ca151b5 JB	256	lockdep_assert_held(&mvm->mutex);
8ca151b5 JB	257
91109f42 JB	258	if (fw_has_capa(&mvm->fw->ucode_capa,
91109f42 JB	259	IWL_UCODE_TLV_CAPA_BINDING_CDB_SUPPORT) &&
730a1891 SS	260	ctxt->channel->band != chandef->chan->band) {
	261	int ret;
	262
	263	/* ... remove it here ...*/
	264	ret = iwl_mvm_phy_ctxt_apply(mvm, ctxt, chandef,
	265	chains_static, chains_dynamic,
	266	FW_CTXT_ACTION_REMOVE, 0);
	267	if (ret)
	268	return ret;
	269
	270	/* ... and proceed to add it again */
	271	action = FW_CTXT_ACTION_ADD;
	272	}
	273
8ca151b5 JB	274	ctxt->channel = chandef->chan;
	275	return iwl_mvm_phy_ctxt_apply(mvm, ctxt, chandef,
	276	chains_static, chains_dynamic,
730a1891	277	action, 0);
8ca151b5 JB	278	}
8ca151b5 JB	279
fe0f2de3 IP	280	void iwl_mvm_phy_ctxt_unref(struct iwl_mvm mvm, struct iwl_mvm_phy_ctxt ctxt)
	281	{
	282	lockdep_assert_held(&mvm->mutex);
e2821011 JB	283
	284	if (WARN_ON_ONCE(!ctxt))
	285	return;
	286
fe0f2de3	287	ctxt->ref--;
fe0f2de3	288	}
cf7b491d AN	289
	290	static void iwl_mvm_binding_iterator(void _data, u8 mac,
	291	struct ieee80211_vif *vif)
	292	{
	293	unsigned long *data = _data;
	294	struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
	295
	296	if (!mvmvif->phy_ctxt)
	297	return;
	298
	299	if (vif->type == NL80211_IFTYPE_STATION \|\|
	300	vif->type == NL80211_IFTYPE_AP)
	301	__set_bit(mvmvif->phy_ctxt->id, data);
	302	}
	303
	304	int iwl_mvm_phy_ctx_count(struct iwl_mvm *mvm)
	305	{
	306	unsigned long phy_ctxt_counter = 0;
	307
	308	ieee80211_iterate_active_interfaces_atomic(mvm->hw,
	309	IEEE80211_IFACE_ITER_NORMAL,
	310	iwl_mvm_binding_iterator,
	311	&phy_ctxt_counter);
	312
	313	return hweight8(phy_ctxt_counter);
	314	}