1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
|
/******************************************************************************
*
* 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 - 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) 2012 - 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 <linux/kernel.h>
#include <linux/module.h>
#include <linux/slab.h>
#include <linux/init.h>
#include <net/mac80211.h>
#include "iwl-debug.h"
#include "mvm.h"
#include "iwl-modparams.h"
#include "fw-api-power.h"
#define POWER_KEEP_ALIVE_PERIOD_SEC 25
static void iwl_mvm_power_log(struct iwl_mvm *mvm,
struct iwl_powertable_cmd *cmd)
{
IWL_DEBUG_POWER(mvm,
"Sending power table command for power level %d, flags = 0x%X\n",
iwlmvm_mod_params.power_scheme,
le16_to_cpu(cmd->flags));
IWL_DEBUG_POWER(mvm, "Keep alive = %u sec\n", cmd->keep_alive_seconds);
if (cmd->flags & cpu_to_le16(POWER_FLAGS_POWER_MANAGEMENT_ENA_MSK)) {
IWL_DEBUG_POWER(mvm, "Rx timeout = %u usec\n",
le32_to_cpu(cmd->rx_data_timeout));
IWL_DEBUG_POWER(mvm, "Tx timeout = %u usec\n",
le32_to_cpu(cmd->tx_data_timeout));
IWL_DEBUG_POWER(mvm, "LP RX RSSI threshold = %u\n",
cmd->lprx_rssi_threshold);
}
}
void iwl_mvm_power_build_cmd(struct iwl_mvm *mvm, struct ieee80211_vif *vif,
struct iwl_powertable_cmd *cmd)
{
struct ieee80211_hw *hw = mvm->hw;
struct ieee80211_chanctx_conf *chanctx_conf;
struct ieee80211_channel *chan;
int dtimper, dtimper_msec;
int keep_alive;
bool radar_detect = false;
/*
* Regardless of power management state the driver must set
* keep alive period. FW will use it for sending keep alive NDPs
* immediately after association.
*/
cmd->keep_alive_seconds = POWER_KEEP_ALIVE_PERIOD_SEC;
if ((iwlmvm_mod_params.power_scheme == IWL_POWER_SCHEME_CAM) ||
!iwlwifi_mod_params.power_save)
return;
cmd->flags |= cpu_to_le16(POWER_FLAGS_POWER_SAVE_ENA_MSK);
if (!vif->bss_conf.ps)
return;
cmd->flags |= cpu_to_le16(POWER_FLAGS_POWER_MANAGEMENT_ENA_MSK);
dtimper = hw->conf.ps_dtim_period ?: 1;
/* Check if radar detection is required on current channel */
rcu_read_lock();
chanctx_conf = rcu_dereference(vif->chanctx_conf);
WARN_ON(!chanctx_conf);
if (chanctx_conf) {
chan = chanctx_conf->def.chan;
radar_detect = chan->flags & IEEE80211_CHAN_RADAR;
}
rcu_read_unlock();
/* Check skip over DTIM conditions */
if (!radar_detect && (dtimper <= 10) &&
(iwlmvm_mod_params.power_scheme == IWL_POWER_SCHEME_LP))
cmd->flags |= cpu_to_le16(POWER_FLAGS_SKIP_OVER_DTIM_MSK);
/* Check that keep alive period is at least 3 * DTIM */
dtimper_msec = dtimper * vif->bss_conf.beacon_int;
keep_alive = max_t(int, 3 * dtimper_msec,
MSEC_PER_SEC * cmd->keep_alive_seconds);
keep_alive = DIV_ROUND_UP(keep_alive, MSEC_PER_SEC);
cmd->keep_alive_seconds = keep_alive;
if (iwlmvm_mod_params.power_scheme == IWL_POWER_SCHEME_LP) {
/* TODO: Also for D3 (device sleep / WoWLAN) */
cmd->rx_data_timeout = cpu_to_le32(10 * USEC_PER_MSEC);
cmd->tx_data_timeout = cpu_to_le32(10 * USEC_PER_MSEC);
} else {
cmd->rx_data_timeout = cpu_to_le32(100 * USEC_PER_MSEC);
cmd->tx_data_timeout = cpu_to_le32(100 * USEC_PER_MSEC);
}
}
int iwl_mvm_power_update_mode(struct iwl_mvm *mvm, struct ieee80211_vif *vif)
{
struct iwl_powertable_cmd cmd = {};
if (vif->type != NL80211_IFTYPE_STATION || vif->p2p)
return 0;
iwl_mvm_power_build_cmd(mvm, vif, &cmd);
iwl_mvm_power_log(mvm, &cmd);
return iwl_mvm_send_cmd_pdu(mvm, POWER_TABLE_CMD, CMD_SYNC,
sizeof(cmd), &cmd);
}
int iwl_mvm_power_disable(struct iwl_mvm *mvm, struct ieee80211_vif *vif)
{
struct iwl_powertable_cmd cmd = {};
if (vif->type != NL80211_IFTYPE_STATION || vif->p2p)
return 0;
if ((iwlmvm_mod_params.power_scheme != IWL_POWER_SCHEME_CAM) &&
iwlwifi_mod_params.power_save)
cmd.flags |= cpu_to_le16(POWER_FLAGS_POWER_SAVE_ENA_MSK);
iwl_mvm_power_log(mvm, &cmd);
return iwl_mvm_send_cmd_pdu(mvm, POWER_TABLE_CMD, CMD_ASYNC,
sizeof(cmd), &cmd);
}
|
