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Diffstat (limited to 'drivers/net/wireless/iwlwifi/mvm/phy-ctxt.c')
-rw-r--r--drivers/net/wireless/iwlwifi/mvm/phy-ctxt.c295
1 files changed, 0 insertions, 295 deletions
diff --git a/drivers/net/wireless/iwlwifi/mvm/phy-ctxt.c b/drivers/net/wireless/iwlwifi/mvm/phy-ctxt.c
deleted file mode 100644
index e68a475e3071..000000000000
--- a/drivers/net/wireless/iwlwifi/mvm/phy-ctxt.c
+++ /dev/null
@@ -1,295 +0,0 @@
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 <ilw@linux.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 == IEEE80211_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}
generated by cgit v1.2.2 (git 2.25.0) at 2025-02-20 22:26:39 -0500