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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 *
8 * Copyright(c) 2012 - 2014 Intel Corporation. All rights reserved.
9 * Copyright(c) 2013 - 2014 Intel Mobile Communications GmbH
10 * Copyright(c) 2017 Intel Deutschland GmbH
11 * Copyright(c) 2018 Intel Corporation
12 *
13 * This program is free software; you can redistribute it and/or modify
14 * it under the terms of version 2 of the GNU General Public License as
15 * published by the Free Software Foundation.
16 *
17 * This program is distributed in the hope that it will be useful, but
18 * WITHOUT ANY WARRANTY; without even the implied warranty of
19 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
20 * General Public License for more details.
21 *
22 * The full GNU General Public License is included in this distribution
23 * in the file called COPYING.
24 *
25 * Contact Information:
26 * Intel Linux Wireless <linuxwifi@intel.com>
27 * Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497
28 *
29 * BSD LICENSE
30 *
31 * Copyright(c) 2012 - 2014 Intel Corporation. All rights reserved.
32 * Copyright(c) 2013 - 2014 Intel Mobile Communications GmbH
33 * Copyright(c) 2018 Intel Corporation
34 * All rights reserved.
35 *
36 * Redistribution and use in source and binary forms, with or without
37 * modification, are permitted provided that the following conditions
38 * are met:
39 *
40 * * Redistributions of source code must retain the above copyright
41 * notice, this list of conditions and the following disclaimer.
42 * * Redistributions in binary form must reproduce the above copyright
43 * notice, this list of conditions and the following disclaimer in
44 * the documentation and/or other materials provided with the
45 * distribution.
46 * * Neither the name Intel Corporation nor the names of its
47 * contributors may be used to endorse or promote products derived
48 * from this software without specific prior written permission.
49 *
50 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
51 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
52 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
53 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
54 * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
55 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
56 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
57 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
58 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
59 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
60 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
61 *
62 *****************************************************************************/
63
64#include <net/mac80211.h>
65#include "fw-api.h"
66#include "mvm.h"
67
68/* Maps the driver specific channel width definition to the fw values */
69u8 iwl_mvm_get_channel_width(struct cfg80211_chan_def *chandef)
70{
71 switch (chandef->width) {
72 case NL80211_CHAN_WIDTH_20_NOHT:
73 case NL80211_CHAN_WIDTH_20:
74 return PHY_VHT_CHANNEL_MODE20;
75 case NL80211_CHAN_WIDTH_40:
76 return PHY_VHT_CHANNEL_MODE40;
77 case NL80211_CHAN_WIDTH_80:
78 return PHY_VHT_CHANNEL_MODE80;
79 case NL80211_CHAN_WIDTH_160:
80 return PHY_VHT_CHANNEL_MODE160;
81 default:
82 WARN(1, "Invalid channel width=%u", chandef->width);
83 return PHY_VHT_CHANNEL_MODE20;
84 }
85}
86
87/*
88 * Maps the driver specific control channel position (relative to the center
89 * freq) definitions to the the fw values
90 */
91u8 iwl_mvm_get_ctrl_pos(struct cfg80211_chan_def *chandef)
92{
93 switch (chandef->chan->center_freq - chandef->center_freq1) {
94 case -70:
95 return PHY_VHT_CTRL_POS_4_BELOW;
96 case -50:
97 return PHY_VHT_CTRL_POS_3_BELOW;
98 case -30:
99 return PHY_VHT_CTRL_POS_2_BELOW;
100 case -10:
101 return PHY_VHT_CTRL_POS_1_BELOW;
102 case 10:
103 return PHY_VHT_CTRL_POS_1_ABOVE;
104 case 30:
105 return PHY_VHT_CTRL_POS_2_ABOVE;
106 case 50:
107 return PHY_VHT_CTRL_POS_3_ABOVE;
108 case 70:
109 return PHY_VHT_CTRL_POS_4_ABOVE;
110 default:
111 WARN(1, "Invalid channel definition");
112 case 0:
113 /*
114 * The FW is expected to check the control channel position only
115 * when in HT/VHT and the channel width is not 20MHz. Return
116 * this value as the default one.
117 */
118 return PHY_VHT_CTRL_POS_1_BELOW;
119 }
120}
121
122/*
123 * Construct the generic fields of the PHY context command
124 */
125static void iwl_mvm_phy_ctxt_cmd_hdr(struct iwl_mvm_phy_ctxt *ctxt,
126 struct iwl_phy_context_cmd *cmd,
127 u32 action, u32 apply_time)
128{
129 memset(cmd, 0, sizeof(struct iwl_phy_context_cmd));
130
131 cmd->id_and_color = cpu_to_le32(FW_CMD_ID_AND_COLOR(ctxt->id,
132 ctxt->color));
133 cmd->action = cpu_to_le32(action);
134 cmd->apply_time = cpu_to_le32(apply_time);
135}
136
137/*
138 * Add the phy configuration to the PHY context command
139 */
140static void iwl_mvm_phy_ctxt_cmd_data(struct iwl_mvm *mvm,
141 struct iwl_phy_context_cmd *cmd,
142 struct cfg80211_chan_def *chandef,
143 u8 chains_static, u8 chains_dynamic)
144{
145 u8 active_cnt, idle_cnt;
146
147 /* Set the channel info data */
148 cmd->ci.band = (chandef->chan->band == NL80211_BAND_2GHZ ?
149 PHY_BAND_24 : PHY_BAND_5);
150
151 cmd->ci.channel = chandef->chan->hw_value;
152 cmd->ci.width = iwl_mvm_get_channel_width(chandef);
153 cmd->ci.ctrl_pos = iwl_mvm_get_ctrl_pos(chandef);
154
155 /* Set rx the chains */
156 idle_cnt = chains_static;
157 active_cnt = chains_dynamic;
158
159 /* In scenarios where we only ever use a single-stream rates,
160 * i.e. legacy 11b/g/a associations, single-stream APs or even
161 * static SMPS, enable both chains to get diversity, improving
162 * the case where we're far enough from the AP that attenuation
163 * between the two antennas is sufficiently different to impact
164 * performance.
165 */
166 if (active_cnt == 1 && iwl_mvm_rx_diversity_allowed(mvm)) {
167 idle_cnt = 2;
168 active_cnt = 2;
169 }
170
171 cmd->rxchain_info = cpu_to_le32(iwl_mvm_get_valid_rx_ant(mvm) <<
172 PHY_RX_CHAIN_VALID_POS);
173 cmd->rxchain_info |= cpu_to_le32(idle_cnt << PHY_RX_CHAIN_CNT_POS);
174 cmd->rxchain_info |= cpu_to_le32(active_cnt <<
175 PHY_RX_CHAIN_MIMO_CNT_POS);
176#ifdef CONFIG_IWLWIFI_DEBUGFS
177 if (unlikely(mvm->dbgfs_rx_phyinfo))
178 cmd->rxchain_info = cpu_to_le32(mvm->dbgfs_rx_phyinfo);
179#endif
180
181 cmd->txchain_info = cpu_to_le32(iwl_mvm_get_valid_tx_ant(mvm));
182}
183
184/*
185 * Send a command to apply the current phy configuration. The command is send
186 * only if something in the configuration changed: in case that this is the
187 * first time that the phy configuration is applied or in case that the phy
188 * configuration changed from the previous apply.
189 */
190static int iwl_mvm_phy_ctxt_apply(struct iwl_mvm *mvm,
191 struct iwl_mvm_phy_ctxt *ctxt,
192 struct cfg80211_chan_def *chandef,
193 u8 chains_static, u8 chains_dynamic,
194 u32 action, u32 apply_time)
195{
196 struct iwl_phy_context_cmd cmd;
197 int ret;
198
199 /* Set the command header fields */
200 iwl_mvm_phy_ctxt_cmd_hdr(ctxt, &cmd, action, apply_time);
201
202 /* Set the command data */
203 iwl_mvm_phy_ctxt_cmd_data(mvm, &cmd, chandef,
204 chains_static, chains_dynamic);
205
206 ret = iwl_mvm_send_cmd_pdu(mvm, PHY_CONTEXT_CMD, 0,
207 sizeof(struct iwl_phy_context_cmd),
208 &cmd);
209 if (ret)
210 IWL_ERR(mvm, "PHY ctxt cmd error. ret=%d\n", ret);
211 return ret;
212}
213
214/*
215 * Send a command to add a PHY context based on the current HW configuration.
216 */
217int iwl_mvm_phy_ctxt_add(struct iwl_mvm *mvm, struct iwl_mvm_phy_ctxt *ctxt,
218 struct cfg80211_chan_def *chandef,
219 u8 chains_static, u8 chains_dynamic)
220{
221 WARN_ON(!test_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status) &&
222 ctxt->ref);
223 lockdep_assert_held(&mvm->mutex);
224
225 ctxt->channel = chandef->chan;
226
227 return iwl_mvm_phy_ctxt_apply(mvm, ctxt, chandef,
228 chains_static, chains_dynamic,
229 FW_CTXT_ACTION_ADD, 0);
230}
231
232/*
233 * Update the number of references to the given PHY context. This is valid only
234 * in case the PHY context was already created, i.e., its reference count > 0.
235 */
236void iwl_mvm_phy_ctxt_ref(struct iwl_mvm *mvm, struct iwl_mvm_phy_ctxt *ctxt)
237{
238 lockdep_assert_held(&mvm->mutex);
239 ctxt->ref++;
240}
241
242/*
243 * Send a command to modify the PHY context based on the current HW
244 * configuration. Note that the function does not check that the configuration
245 * changed.
246 */
247int iwl_mvm_phy_ctxt_changed(struct iwl_mvm *mvm, struct iwl_mvm_phy_ctxt *ctxt,
248 struct cfg80211_chan_def *chandef,
249 u8 chains_static, u8 chains_dynamic)
250{
251 enum iwl_ctxt_action action = FW_CTXT_ACTION_MODIFY;
252
253 lockdep_assert_held(&mvm->mutex);
254
255 if (fw_has_capa(&mvm->fw->ucode_capa,
256 IWL_UCODE_TLV_CAPA_BINDING_CDB_SUPPORT) &&
257 ctxt->channel->band != chandef->chan->band) {
258 int ret;
259
260 /* ... remove it here ...*/
261 ret = iwl_mvm_phy_ctxt_apply(mvm, ctxt, chandef,
262 chains_static, chains_dynamic,
263 FW_CTXT_ACTION_REMOVE, 0);
264 if (ret)
265 return ret;
266
267 /* ... and proceed to add it again */
268 action = FW_CTXT_ACTION_ADD;
269 }
270
271 ctxt->channel = chandef->chan;
272 ctxt->width = chandef->width;
273 return iwl_mvm_phy_ctxt_apply(mvm, ctxt, chandef,
274 chains_static, chains_dynamic,
275 action, 0);
276}
277
278void iwl_mvm_phy_ctxt_unref(struct iwl_mvm *mvm, struct iwl_mvm_phy_ctxt *ctxt)
279{
280 lockdep_assert_held(&mvm->mutex);
281
282 if (WARN_ON_ONCE(!ctxt))
283 return;
284
285 ctxt->ref--;
286
287 /*
288 * Move unused phy's to a default channel. When the phy is moved the,
289 * fw will cleanup immediate quiet bit if it was previously set,
290 * otherwise we might not be able to reuse this phy.
291 */
292 if (ctxt->ref == 0) {
293 struct ieee80211_channel *chan;
294 struct cfg80211_chan_def chandef;
295
296 chan = &mvm->hw->wiphy->bands[NL80211_BAND_2GHZ]->channels[0];
297 cfg80211_chandef_create(&chandef, chan, NL80211_CHAN_NO_HT);
298 iwl_mvm_phy_ctxt_changed(mvm, ctxt, &chandef, 1, 1);
299 }
300}
301
302static void iwl_mvm_binding_iterator(void *_data, u8 *mac,
303 struct ieee80211_vif *vif)
304{
305 unsigned long *data = _data;
306 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
307
308 if (!mvmvif->phy_ctxt)
309 return;
310
311 if (vif->type == NL80211_IFTYPE_STATION ||
312 vif->type == NL80211_IFTYPE_AP)
313 __set_bit(mvmvif->phy_ctxt->id, data);
314}
315
316int iwl_mvm_phy_ctx_count(struct iwl_mvm *mvm)
317{
318 unsigned long phy_ctxt_counter = 0;
319
320 ieee80211_iterate_active_interfaces_atomic(mvm->hw,
321 IEEE80211_IFACE_ITER_NORMAL,
322 iwl_mvm_binding_iterator,
323 &phy_ctxt_counter);
324
325 return hweight8(phy_ctxt_counter);
326}
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 *
8 * Copyright(c) 2012 - 2014 Intel Corporation. All rights reserved.
9 * Copyright(c) 2013 - 2014 Intel Mobile Communications GmbH
10 *
11 * This program is free software; you can redistribute it and/or modify
12 * it under the terms of version 2 of the GNU General Public License as
13 * published by the Free Software Foundation.
14 *
15 * This program is distributed in the hope that it will be useful, but
16 * WITHOUT ANY WARRANTY; without even the implied warranty of
17 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
18 * General Public License for more details.
19 *
20 * You should have received a copy of the GNU General Public License
21 * along with this program; if not, write to the Free Software
22 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110,
23 * USA
24 *
25 * The full GNU General Public License is included in this distribution
26 * in the file called COPYING.
27 *
28 * Contact Information:
29 * Intel Linux Wireless <linuxwifi@intel.com>
30 * Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497
31 *
32 * BSD LICENSE
33 *
34 * Copyright(c) 2012 - 2014 Intel Corporation. All rights reserved.
35 * Copyright(c) 2013 - 2014 Intel Mobile Communications GmbH
36 * All rights reserved.
37 *
38 * Redistribution and use in source and binary forms, with or without
39 * modification, are permitted provided that the following conditions
40 * are met:
41 *
42 * * Redistributions of source code must retain the above copyright
43 * notice, this list of conditions and the following disclaimer.
44 * * Redistributions in binary form must reproduce the above copyright
45 * notice, this list of conditions and the following disclaimer in
46 * the documentation and/or other materials provided with the
47 * distribution.
48 * * Neither the name Intel Corporation nor the names of its
49 * contributors may be used to endorse or promote products derived
50 * from this software without specific prior written permission.
51 *
52 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
53 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
54 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
55 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
56 * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
57 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
58 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
59 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
60 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
61 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
62 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
63 *
64 *****************************************************************************/
65
66#include <net/mac80211.h>
67#include "fw-api.h"
68#include "mvm.h"
69
70/* Maps the driver specific channel width definition to the fw values */
71u8 iwl_mvm_get_channel_width(struct cfg80211_chan_def *chandef)
72{
73 switch (chandef->width) {
74 case NL80211_CHAN_WIDTH_20_NOHT:
75 case NL80211_CHAN_WIDTH_20:
76 return PHY_VHT_CHANNEL_MODE20;
77 case NL80211_CHAN_WIDTH_40:
78 return PHY_VHT_CHANNEL_MODE40;
79 case NL80211_CHAN_WIDTH_80:
80 return PHY_VHT_CHANNEL_MODE80;
81 case NL80211_CHAN_WIDTH_160:
82 return PHY_VHT_CHANNEL_MODE160;
83 default:
84 WARN(1, "Invalid channel width=%u", chandef->width);
85 return PHY_VHT_CHANNEL_MODE20;
86 }
87}
88
89/*
90 * Maps the driver specific control channel position (relative to the center
91 * freq) definitions to the the fw values
92 */
93u8 iwl_mvm_get_ctrl_pos(struct cfg80211_chan_def *chandef)
94{
95 switch (chandef->chan->center_freq - chandef->center_freq1) {
96 case -70:
97 return PHY_VHT_CTRL_POS_4_BELOW;
98 case -50:
99 return PHY_VHT_CTRL_POS_3_BELOW;
100 case -30:
101 return PHY_VHT_CTRL_POS_2_BELOW;
102 case -10:
103 return PHY_VHT_CTRL_POS_1_BELOW;
104 case 10:
105 return PHY_VHT_CTRL_POS_1_ABOVE;
106 case 30:
107 return PHY_VHT_CTRL_POS_2_ABOVE;
108 case 50:
109 return PHY_VHT_CTRL_POS_3_ABOVE;
110 case 70:
111 return PHY_VHT_CTRL_POS_4_ABOVE;
112 default:
113 WARN(1, "Invalid channel definition");
114 case 0:
115 /*
116 * The FW is expected to check the control channel position only
117 * when in HT/VHT and the channel width is not 20MHz. Return
118 * this value as the default one.
119 */
120 return PHY_VHT_CTRL_POS_1_BELOW;
121 }
122}
123
124/*
125 * Construct the generic fields of the PHY context command
126 */
127static void iwl_mvm_phy_ctxt_cmd_hdr(struct iwl_mvm_phy_ctxt *ctxt,
128 struct iwl_phy_context_cmd *cmd,
129 u32 action, u32 apply_time)
130{
131 memset(cmd, 0, sizeof(struct iwl_phy_context_cmd));
132
133 cmd->id_and_color = cpu_to_le32(FW_CMD_ID_AND_COLOR(ctxt->id,
134 ctxt->color));
135 cmd->action = cpu_to_le32(action);
136 cmd->apply_time = cpu_to_le32(apply_time);
137}
138
139/*
140 * Add the phy configuration to the PHY context command
141 */
142static void iwl_mvm_phy_ctxt_cmd_data(struct iwl_mvm *mvm,
143 struct iwl_phy_context_cmd *cmd,
144 struct cfg80211_chan_def *chandef,
145 u8 chains_static, u8 chains_dynamic)
146{
147 u8 active_cnt, idle_cnt;
148
149 /* Set the channel info data */
150 cmd->ci.band = (chandef->chan->band == NL80211_BAND_2GHZ ?
151 PHY_BAND_24 : PHY_BAND_5);
152
153 cmd->ci.channel = chandef->chan->hw_value;
154 cmd->ci.width = iwl_mvm_get_channel_width(chandef);
155 cmd->ci.ctrl_pos = iwl_mvm_get_ctrl_pos(chandef);
156
157 /* Set rx the chains */
158 idle_cnt = chains_static;
159 active_cnt = chains_dynamic;
160
161 /* In scenarios where we only ever use a single-stream rates,
162 * i.e. legacy 11b/g/a associations, single-stream APs or even
163 * static SMPS, enable both chains to get diversity, improving
164 * the case where we're far enough from the AP that attenuation
165 * between the two antennas is sufficiently different to impact
166 * performance.
167 */
168 if (active_cnt == 1 && iwl_mvm_rx_diversity_allowed(mvm)) {
169 idle_cnt = 2;
170 active_cnt = 2;
171 }
172
173 cmd->rxchain_info = cpu_to_le32(iwl_mvm_get_valid_rx_ant(mvm) <<
174 PHY_RX_CHAIN_VALID_POS);
175 cmd->rxchain_info |= cpu_to_le32(idle_cnt << PHY_RX_CHAIN_CNT_POS);
176 cmd->rxchain_info |= cpu_to_le32(active_cnt <<
177 PHY_RX_CHAIN_MIMO_CNT_POS);
178#ifdef CONFIG_IWLWIFI_DEBUGFS
179 if (unlikely(mvm->dbgfs_rx_phyinfo))
180 cmd->rxchain_info = cpu_to_le32(mvm->dbgfs_rx_phyinfo);
181#endif
182
183 cmd->txchain_info = cpu_to_le32(iwl_mvm_get_valid_tx_ant(mvm));
184}
185
186/*
187 * Send a command to apply the current phy configuration. The command is send
188 * only if something in the configuration changed: in case that this is the
189 * first time that the phy configuration is applied or in case that the phy
190 * configuration changed from the previous apply.
191 */
192static int iwl_mvm_phy_ctxt_apply(struct iwl_mvm *mvm,
193 struct iwl_mvm_phy_ctxt *ctxt,
194 struct cfg80211_chan_def *chandef,
195 u8 chains_static, u8 chains_dynamic,
196 u32 action, u32 apply_time)
197{
198 struct iwl_phy_context_cmd cmd;
199 int ret;
200
201 /* Set the command header fields */
202 iwl_mvm_phy_ctxt_cmd_hdr(ctxt, &cmd, action, apply_time);
203
204 /* Set the command data */
205 iwl_mvm_phy_ctxt_cmd_data(mvm, &cmd, chandef,
206 chains_static, chains_dynamic);
207
208 ret = iwl_mvm_send_cmd_pdu(mvm, PHY_CONTEXT_CMD, 0,
209 sizeof(struct iwl_phy_context_cmd),
210 &cmd);
211 if (ret)
212 IWL_ERR(mvm, "PHY ctxt cmd error. ret=%d\n", ret);
213 return ret;
214}
215
216/*
217 * Send a command to add a PHY context based on the current HW configuration.
218 */
219int iwl_mvm_phy_ctxt_add(struct iwl_mvm *mvm, struct iwl_mvm_phy_ctxt *ctxt,
220 struct cfg80211_chan_def *chandef,
221 u8 chains_static, u8 chains_dynamic)
222{
223 WARN_ON(!test_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status) &&
224 ctxt->ref);
225 lockdep_assert_held(&mvm->mutex);
226
227 ctxt->channel = chandef->chan;
228
229 return iwl_mvm_phy_ctxt_apply(mvm, ctxt, chandef,
230 chains_static, chains_dynamic,
231 FW_CTXT_ACTION_ADD, 0);
232}
233
234/*
235 * Update the number of references to the given PHY context. This is valid only
236 * in case the PHY context was already created, i.e., its reference count > 0.
237 */
238void iwl_mvm_phy_ctxt_ref(struct iwl_mvm *mvm, struct iwl_mvm_phy_ctxt *ctxt)
239{
240 lockdep_assert_held(&mvm->mutex);
241 ctxt->ref++;
242}
243
244/*
245 * Send a command to modify the PHY context based on the current HW
246 * configuration. Note that the function does not check that the configuration
247 * changed.
248 */
249int iwl_mvm_phy_ctxt_changed(struct iwl_mvm *mvm, struct iwl_mvm_phy_ctxt *ctxt,
250 struct cfg80211_chan_def *chandef,
251 u8 chains_static, u8 chains_dynamic)
252{
253 lockdep_assert_held(&mvm->mutex);
254
255 ctxt->channel = chandef->chan;
256 return iwl_mvm_phy_ctxt_apply(mvm, ctxt, chandef,
257 chains_static, chains_dynamic,
258 FW_CTXT_ACTION_MODIFY, 0);
259}
260
261void iwl_mvm_phy_ctxt_unref(struct iwl_mvm *mvm, struct iwl_mvm_phy_ctxt *ctxt)
262{
263 lockdep_assert_held(&mvm->mutex);
264
265 if (WARN_ON_ONCE(!ctxt))
266 return;
267
268 ctxt->ref--;
269}
270
271static void iwl_mvm_binding_iterator(void *_data, u8 *mac,
272 struct ieee80211_vif *vif)
273{
274 unsigned long *data = _data;
275 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
276
277 if (!mvmvif->phy_ctxt)
278 return;
279
280 if (vif->type == NL80211_IFTYPE_STATION ||
281 vif->type == NL80211_IFTYPE_AP)
282 __set_bit(mvmvif->phy_ctxt->id, data);
283}
284
285int iwl_mvm_phy_ctx_count(struct iwl_mvm *mvm)
286{
287 unsigned long phy_ctxt_counter = 0;
288
289 ieee80211_iterate_active_interfaces_atomic(mvm->hw,
290 IEEE80211_IFACE_ITER_NORMAL,
291 iwl_mvm_binding_iterator,
292 &phy_ctxt_counter);
293
294 return hweight8(phy_ctxt_counter);
295}