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iwlwifi: fix bugs in beacon configuration
[deliverable/linux.git] / drivers / net / wireless / iwlwifi / iwl-power.c
CommitLineData
5da4b55f
MA		 1/******************************************************************************
2 *
01f8162a 3 * Copyright(c) 2007 - 2009 Intel Corporation. All rights reserved.
5da4b55f
MA		 4 *
5 * Portions of this file are derived from the ipw3945 project, as well
6 * as portions of the ieee80211 subsystem header files.
7 *
8 * This program is free software; you can redistribute it and/or modify it
9 * under the terms of version 2 of the GNU General Public License as
10 * published by the Free Software Foundation.
11 *
12 * This program is distributed in the hope that it will be useful, but WITHOUT
13 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
14 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
15 * more details.
16 *
17 * You should have received a copy of the GNU General Public License along with
18 * this program; if not, write to the Free Software Foundation, Inc.,
19 * 51 Franklin Street, Fifth Floor, Boston, MA 02110, USA
20 *
21 * The full GNU General Public License is included in this distribution in the
22 * file called LICENSE.
23 *
24 * Contact Information:
759ef89f 25 * Intel Linux Wireless <ilw@linux.intel.com>
5da4b55f
MA		 26 * Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497
27 *****************************************************************************/
28
29
30#include <linux/kernel.h>
31#include <linux/module.h>
5da4b55f
MA		 32#include <linux/init.h>
33
34#include <net/mac80211.h>
35
36#include "iwl-eeprom.h"
3e0d4cb1 37#include "iwl-dev.h"
5da4b55f 38#include "iwl-core.h"
39b73fb1 39#include "iwl-io.h"
5a36ba0e 40#include "iwl-commands.h"
5da4b55f
MA		 41#include "iwl-debug.h"
42#include "iwl-power.h"
5da4b55f
MA		 43
44/*
e312c24c 45 * Setting power level allows the card to go to sleep when not busy.
5da4b55f 46 *
e312c24c
JB		 47 * We calculate a sleep command based on the required latency, which
48 * we get from mac80211. In order to handle thermal throttling, we can
49 * also use pre-defined power levels.
5da4b55f
MA		 50 */
51
e312c24c
JB		 52/*
53 * For now, keep using power level 1 instead of automatically
54 * adjusting ...
55 */
56bool no_sleep_autoadjust = true;
57module_param(no_sleep_autoadjust, bool, S_IRUGO);
58MODULE_PARM_DESC(no_sleep_autoadjust,
59 "don't automatically adjust sleep level "
60 "according to maximum network latency");
5da4b55f 61
e312c24c
JB		 62/*
63 * This defines the old power levels. They are still used by default
64 * (level 1) and for thermal throttle (levels 3 through 5)
65 */
66
67struct iwl_power_vec_entry {
68 struct iwl_powertable_cmd cmd;
4ad177b5 69 u8 no_dtim; /* number of skip dtim */
e312c24c
JB		 70};
71
72#define IWL_DTIM_RANGE_0_MAX 2
73#define IWL_DTIM_RANGE_1_MAX 10
5da4b55f 74
7af2c460
JB		 75#define NOSLP cpu_to_le16(0), 0, 0
76#define SLP IWL_POWER_DRIVER_ALLOW_SLEEP_MSK, 0, 0
77#define TU_TO_USEC 1024
78#define SLP_TOUT(T) cpu_to_le32((T) * TU_TO_USEC)
79#define SLP_VEC(X0, X1, X2, X3, X4) {cpu_to_le32(X0), \
80 cpu_to_le32(X1), \
81 cpu_to_le32(X2), \
82 cpu_to_le32(X3), \
83 cpu_to_le32(X4)}
5da4b55f 84/* default power management (not Tx power) table values */
e312c24c 85/* for DTIM period 0 through IWL_DTIM_RANGE_0_MAX */
4ad177b5 86/* DTIM 0 - 2 */
7af2c460 87static const struct iwl_power_vec_entry range_0[IWL_POWER_NUM] = {
4ad177b5 88 {{SLP, SLP_TOUT(200), SLP_TOUT(500), SLP_VEC(1, 1, 2, 2, 0xFF)}, 0},
5da4b55f
MA		 89 {{SLP, SLP_TOUT(200), SLP_TOUT(300), SLP_VEC(1, 2, 2, 2, 0xFF)}, 0},
90 {{SLP, SLP_TOUT(50), SLP_TOUT(100), SLP_VEC(2, 2, 2, 2, 0xFF)}, 0},
91 {{SLP, SLP_TOUT(50), SLP_TOUT(25), SLP_VEC(2, 2, 4, 4, 0xFF)}, 1},
92 {{SLP, SLP_TOUT(25), SLP_TOUT(25), SLP_VEC(2, 2, 4, 6, 0xFF)}, 2}
93};
94
95
e312c24c 96/* for DTIM period IWL_DTIM_RANGE_0_MAX + 1 through IWL_DTIM_RANGE_1_MAX */
4ad177b5 97/* DTIM 3 - 10 */
7af2c460 98static const struct iwl_power_vec_entry range_1[IWL_POWER_NUM] = {
5da4b55f
MA		 99 {{SLP, SLP_TOUT(200), SLP_TOUT(500), SLP_VEC(1, 2, 3, 4, 4)}, 0},
100 {{SLP, SLP_TOUT(200), SLP_TOUT(300), SLP_VEC(1, 2, 3, 4, 7)}, 0},
101 {{SLP, SLP_TOUT(50), SLP_TOUT(100), SLP_VEC(2, 4, 6, 7, 9)}, 0},
102 {{SLP, SLP_TOUT(50), SLP_TOUT(25), SLP_VEC(2, 4, 6, 9, 10)}, 1},
4ad177b5 103 {{SLP, SLP_TOUT(25), SLP_TOUT(25), SLP_VEC(2, 4, 6, 10, 10)}, 2}
5da4b55f
MA		 104};
105
e312c24c 106/* for DTIM period > IWL_DTIM_RANGE_1_MAX */
4ad177b5 107/* DTIM 11 - */
7af2c460 108static const struct iwl_power_vec_entry range_2[IWL_POWER_NUM] = {
5da4b55f
MA		 109 {{SLP, SLP_TOUT(200), SLP_TOUT(500), SLP_VEC(1, 2, 3, 4, 0xFF)}, 0},
110 {{SLP, SLP_TOUT(200), SLP_TOUT(300), SLP_VEC(2, 4, 6, 7, 0xFF)}, 0},
111 {{SLP, SLP_TOUT(50), SLP_TOUT(100), SLP_VEC(2, 7, 9, 9, 0xFF)}, 0},
112 {{SLP, SLP_TOUT(50), SLP_TOUT(25), SLP_VEC(2, 7, 9, 9, 0xFF)}, 0},
113 {{SLP, SLP_TOUT(25), SLP_TOUT(25), SLP_VEC(4, 7, 10, 10, 0xFF)}, 0}
114};
115
e312c24c
JB		 116static void iwl_static_sleep_cmd(struct iwl_priv *priv,
117 struct iwl_powertable_cmd *cmd,
118 enum iwl_power_level lvl, int period)
119{
120 const struct iwl_power_vec_entry *table;
4ad177b5
WYG		 121 int max_sleep[IWL_POWER_VEC_SIZE] = { 0 };
122 int i;
123 u8 skip;
124 u32 slp_itrvl;
e312c24c
JB		 125
126 table = range_2;
4ad177b5 127 if (period <= IWL_DTIM_RANGE_1_MAX)
e312c24c 128 table = range_1;
4ad177b5 129 if (period <= IWL_DTIM_RANGE_0_MAX)
e312c24c
JB		 130 table = range_0;
131
132 BUG_ON(lvl < 0 || lvl >= IWL_POWER_NUM);
133
134 *cmd = table[lvl].cmd;
135
136 if (period == 0) {
4ad177b5 137 skip = 0;
e312c24c 138 period = 1;
4ad177b5
WYG		 139 for (i = 0; i < IWL_POWER_VEC_SIZE; i++)
140 max_sleep[i] = 1;
141
e312c24c 142 } else {
4ad177b5
WYG		 143 skip = table[lvl].no_dtim;
144 for (i = 0; i < IWL_POWER_VEC_SIZE; i++)
145 max_sleep[i] = le32_to_cpu(cmd->sleep_interval[i]);
146 max_sleep[IWL_POWER_VEC_SIZE - 1] = skip + 1;
e312c24c
JB		 147 }
148
4ad177b5
WYG		 149 slp_itrvl = le32_to_cpu(cmd->sleep_interval[IWL_POWER_VEC_SIZE - 1]);
150 /* figure out the listen interval based on dtim period and skip */
151 if (slp_itrvl == 0xFF)
152 cmd->sleep_interval[IWL_POWER_VEC_SIZE - 1] =
153 cpu_to_le32(period * (skip + 1));
154
155 slp_itrvl = le32_to_cpu(cmd->sleep_interval[IWL_POWER_VEC_SIZE - 1]);
156 if (slp_itrvl > period)
157 cmd->sleep_interval[IWL_POWER_VEC_SIZE - 1] =
158 cpu_to_le32((slp_itrvl / period) * period);
159
160 if (skip)
e312c24c 161 cmd->flags |= IWL_POWER_SLEEP_OVER_DTIM_MSK;
4ad177b5 162 else
e312c24c 163 cmd->flags &= ~IWL_POWER_SLEEP_OVER_DTIM_MSK;
e312c24c 164
4ad177b5 165 slp_itrvl = le32_to_cpu(cmd->sleep_interval[IWL_POWER_VEC_SIZE - 1]);
570af86e 166 if (slp_itrvl > IWL_CONN_MAX_LISTEN_INTERVAL)
4ad177b5 167 cmd->sleep_interval[IWL_POWER_VEC_SIZE - 1] =
570af86e 168 cpu_to_le32(IWL_CONN_MAX_LISTEN_INTERVAL);
4ad177b5
WYG		 169
170 /* enforce max sleep interval */
171 for (i = IWL_POWER_VEC_SIZE - 1; i >= 0 ; i--) {
172 if (le32_to_cpu(cmd->sleep_interval[i]) >
173 (max_sleep[i] * period))
174 cmd->sleep_interval[i] =
175 cpu_to_le32(max_sleep[i] * period);
176 if (i != (IWL_POWER_VEC_SIZE - 1)) {
177 if (le32_to_cpu(cmd->sleep_interval[i]) >
178 le32_to_cpu(cmd->sleep_interval[i+1]))
179 cmd->sleep_interval[i] =
180 cmd->sleep_interval[i+1];
181 }
182 }
e312c24c
JB		 183
184 if (priv->power_data.pci_pm)
185 cmd->flags |= IWL_POWER_PCI_PM_MSK;
186 else
187 cmd->flags &= ~IWL_POWER_PCI_PM_MSK;
188
4ad177b5
WYG		 189 IWL_DEBUG_POWER(priv, "numSkipDtim = %u, dtimPeriod = %d\n",
190 skip, period);
e312c24c
JB		 191 IWL_DEBUG_POWER(priv, "Sleep command for index %d\n", lvl + 1);
192}
193
46f9381a
WYG		 194/* default Thermal Throttling transaction table
195 * Current state | Throttling Down | Throttling Up
196 *=============================================================================
197 * Condition Nxt State Condition Nxt State Condition Nxt State
198 *-----------------------------------------------------------------------------
7812b167
WYG		 199 * IWL_TI_0 T >= 114 CT_KILL 114>T>=105 TI_1 N/A N/A
200 * IWL_TI_1 T >= 114 CT_KILL 114>T>=110 TI_2 T<=95 TI_0
201 * IWL_TI_2 T >= 114 CT_KILL T<=100 TI_1
46f9381a
WYG		 202 * IWL_CT_KILL N/A N/A N/A N/A T<=95 TI_0
203 *=============================================================================
204 */
205static const struct iwl_tt_trans tt_range_0[IWL_TI_STATE_MAX - 1] = {
206 {IWL_TI_0, IWL_ABSOLUTE_ZERO, 104},
7812b167
WYG		 207 {IWL_TI_1, 105, CT_KILL_THRESHOLD - 1},
208 {IWL_TI_CT_KILL, CT_KILL_THRESHOLD, IWL_ABSOLUTE_MAX}
46f9381a
WYG		 209};
210static const struct iwl_tt_trans tt_range_1[IWL_TI_STATE_MAX - 1] = {
211 {IWL_TI_0, IWL_ABSOLUTE_ZERO, 95},
7812b167
WYG		 212 {IWL_TI_2, 110, CT_KILL_THRESHOLD - 1},
213 {IWL_TI_CT_KILL, CT_KILL_THRESHOLD, IWL_ABSOLUTE_MAX}
46f9381a
WYG		 214};
215static const struct iwl_tt_trans tt_range_2[IWL_TI_STATE_MAX - 1] = {
216 {IWL_TI_1, IWL_ABSOLUTE_ZERO, 100},
7812b167
WYG		 217 {IWL_TI_CT_KILL, CT_KILL_THRESHOLD, IWL_ABSOLUTE_MAX},
218 {IWL_TI_CT_KILL, CT_KILL_THRESHOLD, IWL_ABSOLUTE_MAX}
46f9381a
WYG		 219};
220static const struct iwl_tt_trans tt_range_3[IWL_TI_STATE_MAX - 1] = {
221 {IWL_TI_0, IWL_ABSOLUTE_ZERO, CT_KILL_EXIT_THRESHOLD},
222 {IWL_TI_CT_KILL, CT_KILL_EXIT_THRESHOLD + 1, IWL_ABSOLUTE_MAX},
223 {IWL_TI_CT_KILL, CT_KILL_EXIT_THRESHOLD + 1, IWL_ABSOLUTE_MAX}
224};
225
226/* Advance Thermal Throttling default restriction table */
227static const struct iwl_tt_restriction restriction_range[IWL_TI_STATE_MAX] = {
3ad3b92a
JB		 228 {IWL_ANT_OK_MULTI, IWL_ANT_OK_MULTI, true },
229 {IWL_ANT_OK_SINGLE, IWL_ANT_OK_MULTI, true },
230 {IWL_ANT_OK_SINGLE, IWL_ANT_OK_SINGLE, false },
231 {IWL_ANT_OK_NONE, IWL_ANT_OK_NONE, false }
46f9381a 232};
d25aabb0 233
5da4b55f 234
e312c24c
JB		 235static void iwl_power_sleep_cam_cmd(struct iwl_priv *priv,
236 struct iwl_powertable_cmd *cmd)
5da4b55f 237{
e312c24c 238 memset(cmd, 0, sizeof(*cmd));
5da4b55f 239
e312c24c
JB		 240 if (priv->power_data.pci_pm)
241 cmd->flags |= IWL_POWER_PCI_PM_MSK;
5da4b55f 242
e312c24c 243 IWL_DEBUG_POWER(priv, "Sleep command for CAM\n");
5da4b55f
MA		 244}
245
e312c24c
JB		 246static void iwl_power_fill_sleep_cmd(struct iwl_priv *priv,
247 struct iwl_powertable_cmd *cmd,
248 int dynps_ms, int wakeup_period)
5da4b55f 249{
4c561a02
JB		 250 /*
251 * These are the original power level 3 sleep successions. The
252 * device may behave better with such succession and was also
253 * only tested with that. Just like the original sleep commands,
254 * also adjust the succession here to the wakeup_period below.
255 * The ranges are the same as for the sleep commands, 0-2, 3-9
256 * and >10, which is selected based on the DTIM interval for
257 * the sleep index but here we use the wakeup period since that
258 * is what we need to do for the latency requirements.
259 */
260 static const u8 slp_succ_r0[IWL_POWER_VEC_SIZE] = { 2, 2, 2, 2, 2 };
261 static const u8 slp_succ_r1[IWL_POWER_VEC_SIZE] = { 2, 4, 6, 7, 9 };
262 static const u8 slp_succ_r2[IWL_POWER_VEC_SIZE] = { 2, 7, 9, 9, 0xFF };
263 const u8 *slp_succ = slp_succ_r0;
5cd19c5f 264 int i;
5da4b55f 265
4c561a02
JB		 266 if (wakeup_period > IWL_DTIM_RANGE_0_MAX)
267 slp_succ = slp_succ_r1;
268 if (wakeup_period > IWL_DTIM_RANGE_1_MAX)
269 slp_succ = slp_succ_r2;
270
e312c24c 271 memset(cmd, 0, sizeof(*cmd));
5cd19c5f 272
e312c24c
JB		 273 cmd->flags = IWL_POWER_DRIVER_ALLOW_SLEEP_MSK |
274 IWL_POWER_FAST_PD; /* no use seeing frames for others */
5da4b55f 275
e312c24c
JB		 276 if (priv->power_data.pci_pm)
277 cmd->flags |= IWL_POWER_PCI_PM_MSK;
5da4b55f 278
e312c24c
JB		 279 cmd->rx_data_timeout = cpu_to_le32(1000 * dynps_ms);
280 cmd->tx_data_timeout = cpu_to_le32(1000 * dynps_ms);
5da4b55f 281
5cd19c5f 282 for (i = 0; i < IWL_POWER_VEC_SIZE; i++)
4c561a02
JB		 283 cmd->sleep_interval[i] =
284 cpu_to_le32(min_t(int, slp_succ[i], wakeup_period));
e312c24c
JB		 285
286 IWL_DEBUG_POWER(priv, "Automatic sleep command\n");
287}
5da4b55f 288
e312c24c
JB		 289static int iwl_set_power(struct iwl_priv *priv, struct iwl_powertable_cmd *cmd)
290{
291 IWL_DEBUG_POWER(priv, "Sending power/sleep command\n");
e1623446
TW		 292 IWL_DEBUG_POWER(priv, "Flags value = 0x%08X\n", cmd->flags);
293 IWL_DEBUG_POWER(priv, "Tx timeout = %u\n", le32_to_cpu(cmd->tx_data_timeout));
294 IWL_DEBUG_POWER(priv, "Rx timeout = %u\n", le32_to_cpu(cmd->rx_data_timeout));
295 IWL_DEBUG_POWER(priv, "Sleep interval vector = { %d , %d , %d , %d , %d }\n",
5da4b55f
MA		 296 le32_to_cpu(cmd->sleep_interval[0]),
297 le32_to_cpu(cmd->sleep_interval[1]),
298 le32_to_cpu(cmd->sleep_interval[2]),
299 le32_to_cpu(cmd->sleep_interval[3]),
300 le32_to_cpu(cmd->sleep_interval[4]));
301
e312c24c
JB		 302 return iwl_send_cmd_pdu(priv, POWER_TABLE_CMD,
303 sizeof(struct iwl_powertable_cmd), cmd);
5da4b55f
MA		 304}
305
306
04816448 307int iwl_power_update_mode(struct iwl_priv *priv, bool force)
5da4b55f 308{
5da4b55f 309 int ret = 0;
3ad3b92a 310 struct iwl_tt_mgmt *tt = &priv->thermal_throttle;
e312c24c
JB		 311 bool enabled = (priv->iw_mode == NL80211_IFTYPE_STATION) &&
312 (priv->hw->conf.flags & IEEE80211_CONF_PS);
a71c8f62 313 bool update_chains;
e312c24c
JB		 314 struct iwl_powertable_cmd cmd;
315 int dtimper;
5da4b55f 316
04816448 317 /* Don't update the RX chain when chain noise calibration is running */
a71c8f62
WT		 318 update_chains = priv->chain_noise_data.state == IWL_CHAIN_NOISE_DONE ||
319 priv->chain_noise_data.state == IWL_CHAIN_NOISE_ALIVE;
04816448 320
e312c24c
JB		 321 if (priv->vif)
322 dtimper = priv->vif->bss_conf.dtim_period;
323 else
324 dtimper = 1;
325
559a4741
JB		 326 if (priv->cfg->broken_powersave)
327 iwl_power_sleep_cam_cmd(priv, &cmd);
78f5fb7f
JB		 328 else if (priv->cfg->supports_idle &&
329 priv->hw->conf.flags & IEEE80211_CONF_IDLE)
330 iwl_static_sleep_cmd(priv, &cmd, IWL_POWER_INDEX_5, 20);
559a4741 331 else if (tt->state >= IWL_TI_1)
e312c24c
JB		 332 iwl_static_sleep_cmd(priv, &cmd, tt->tt_power_mode, dtimper);
333 else if (!enabled)
334 iwl_power_sleep_cam_cmd(priv, &cmd);
335 else if (priv->power_data.debug_sleep_level_override >= 0)
336 iwl_static_sleep_cmd(priv, &cmd,
337 priv->power_data.debug_sleep_level_override,
338 dtimper);
339 else if (no_sleep_autoadjust)
340 iwl_static_sleep_cmd(priv, &cmd, IWL_POWER_INDEX_1, dtimper);
341 else
342 iwl_power_fill_sleep_cmd(priv, &cmd,
343 priv->hw->conf.dynamic_ps_timeout,
344 priv->hw->conf.max_sleep_period);
5da4b55f 345
7af2c460 346 if (iwl_is_ready_rf(priv) &&
e312c24c
JB		 347 (memcmp(&priv->power_data.sleep_cmd, &cmd, sizeof(cmd)) || force)) {
348 if (cmd.flags & IWL_POWER_DRIVER_ALLOW_SLEEP_MSK)
5da4b55f
MA		 349 set_bit(STATUS_POWER_PMI, &priv->status);
350
ca579617 351 ret = iwl_set_power(priv, &cmd);
3a780d25 352 if (!ret) {
e312c24c 353 if (!(cmd.flags & IWL_POWER_DRIVER_ALLOW_SLEEP_MSK))
3a780d25
WYG		 354 clear_bit(STATUS_POWER_PMI, &priv->status);
355
356 if (priv->cfg->ops->lib->update_chain_flags &&
357 update_chains)
358 priv->cfg->ops->lib->update_chain_flags(priv);
b57d46aa 359 else if (priv->cfg->ops->lib->update_chain_flags)
3a780d25
WYG		 360 IWL_DEBUG_POWER(priv,
361 "Cannot update the power, chain noise "
a71c8f62
WT		 362 "calibration running: %d\n",
363 priv->chain_noise_data.state);
e312c24c 364 memcpy(&priv->power_data.sleep_cmd, &cmd, sizeof(cmd));
3a780d25
WYG		 365 } else
366 IWL_ERR(priv, "set power fail, ret = %d", ret);
5da4b55f
MA		 367 }
368
369 return ret;
370}
371EXPORT_SYMBOL(iwl_power_update_mode);
372
46f9381a
WYG		 373bool iwl_ht_enabled(struct iwl_priv *priv)
374{
3ad3b92a 375 struct iwl_tt_mgmt *tt = &priv->thermal_throttle;
46f9381a
WYG		 376 struct iwl_tt_restriction *restriction;
377
3ad3b92a 378 if (!priv->thermal_throttle.advanced_tt)
46f9381a
WYG		 379 return true;
380 restriction = tt->restriction + tt->state;
381 return restriction->is_ht;
382}
383EXPORT_SYMBOL(iwl_ht_enabled);
384
7812b167
WYG		 385bool iwl_within_ct_kill_margin(struct iwl_priv *priv)
386{
387 s32 temp = priv->temperature; /* degrees CELSIUS except 4965 */
388 bool within_margin = false;
389
390 if ((priv->hw_rev & CSR_HW_REV_TYPE_MSK) == CSR_HW_REV_TYPE_4965)
391 temp = KELVIN_TO_CELSIUS(priv->temperature);
392
393 if (!priv->thermal_throttle.advanced_tt)
394 within_margin = ((temp + IWL_TT_CT_KILL_MARGIN) >=
395 CT_KILL_THRESHOLD_LEGACY) ? true : false;
396 else
397 within_margin = ((temp + IWL_TT_CT_KILL_MARGIN) >=
398 CT_KILL_THRESHOLD) ? true : false;
399 return within_margin;
400}
401
3ad3b92a 402enum iwl_antenna_ok iwl_tx_ant_restriction(struct iwl_priv *priv)
46f9381a 403{
3ad3b92a 404 struct iwl_tt_mgmt *tt = &priv->thermal_throttle;
46f9381a
WYG		 405 struct iwl_tt_restriction *restriction;
406
3ad3b92a
JB		 407 if (!priv->thermal_throttle.advanced_tt)
408 return IWL_ANT_OK_MULTI;
46f9381a
WYG		 409 restriction = tt->restriction + tt->state;
410 return restriction->tx_stream;
411}
412EXPORT_SYMBOL(iwl_tx_ant_restriction);
413
3ad3b92a 414enum iwl_antenna_ok iwl_rx_ant_restriction(struct iwl_priv *priv)
46f9381a 415{
3ad3b92a 416 struct iwl_tt_mgmt *tt = &priv->thermal_throttle;
46f9381a
WYG		 417 struct iwl_tt_restriction *restriction;
418
3ad3b92a
JB		 419 if (!priv->thermal_throttle.advanced_tt)
420 return IWL_ANT_OK_MULTI;
46f9381a
WYG		 421 restriction = tt->restriction + tt->state;
422 return restriction->rx_stream;
423}
46f9381a 424
39b73fb1 425#define CT_KILL_EXIT_DURATION (5) /* 5 seconds duration */
7812b167 426#define CT_KILL_WAITING_DURATION (300) /* 300ms duration */
39b73fb1
WYG		 427
428/*
429 * toggle the bit to wake up uCode and check the temperature
430 * if the temperature is below CT, uCode will stay awake and send card
431 * state notification with CT_KILL bit clear to inform Thermal Throttling
432 * Management to change state. Otherwise, uCode will go back to sleep
433 * without doing anything, driver should continue the 5 seconds timer
434 * to wake up uCode for temperature check until temperature drop below CT
435 */
436static void iwl_tt_check_exit_ct_kill(unsigned long data)
437{
438 struct iwl_priv *priv = (struct iwl_priv *)data;
3ad3b92a 439 struct iwl_tt_mgmt *tt = &priv->thermal_throttle;
39b73fb1
WYG		 440 unsigned long flags;
441
442 if (test_bit(STATUS_EXIT_PENDING, &priv->status))
443 return;
444
445 if (tt->state == IWL_TI_CT_KILL) {
3ad3b92a 446 if (priv->thermal_throttle.ct_kill_toggle) {
39b73fb1
WYG		 447 iwl_write32(priv, CSR_UCODE_DRV_GP1_CLR,
448 CSR_UCODE_DRV_GP1_REG_BIT_CT_KILL_EXIT);
3ad3b92a 449 priv->thermal_throttle.ct_kill_toggle = false;
39b73fb1
WYG		 450 } else {
451 iwl_write32(priv, CSR_UCODE_DRV_GP1_SET,
452 CSR_UCODE_DRV_GP1_REG_BIT_CT_KILL_EXIT);
3ad3b92a 453 priv->thermal_throttle.ct_kill_toggle = true;
39b73fb1
WYG		 454 }
455 iwl_read32(priv, CSR_UCODE_DRV_GP1);
456 spin_lock_irqsave(&priv->reg_lock, flags);
457 if (!iwl_grab_nic_access(priv))
458 iwl_release_nic_access(priv);
459 spin_unlock_irqrestore(&priv->reg_lock, flags);
460
461 /* Reschedule the ct_kill timer to occur in
462 * CT_KILL_EXIT_DURATION seconds to ensure we get a
463 * thermal update */
7812b167 464 IWL_DEBUG_POWER(priv, "schedule ct_kill exit timer\n");
3ad3b92a 465 mod_timer(&priv->thermal_throttle.ct_kill_exit_tm, jiffies +
39b73fb1
WYG		 466 CT_KILL_EXIT_DURATION * HZ);
467 }
468}
469
470static void iwl_perform_ct_kill_task(struct iwl_priv *priv,
471 bool stop)
472{
473 if (stop) {
474 IWL_DEBUG_POWER(priv, "Stop all queues\n");
475 if (priv->mac80211_registered)
476 ieee80211_stop_queues(priv->hw);
477 IWL_DEBUG_POWER(priv,
478 "Schedule 5 seconds CT_KILL Timer\n");
3ad3b92a 479 mod_timer(&priv->thermal_throttle.ct_kill_exit_tm, jiffies +
39b73fb1
WYG		 480 CT_KILL_EXIT_DURATION * HZ);
481 } else {
482 IWL_DEBUG_POWER(priv, "Wake all queues\n");
483 if (priv->mac80211_registered)
484 ieee80211_wake_queues(priv->hw);
485 }
486}
487
7812b167
WYG		 488static void iwl_tt_ready_for_ct_kill(unsigned long data)
489{
490 struct iwl_priv *priv = (struct iwl_priv *)data;
491 struct iwl_tt_mgmt *tt = &priv->thermal_throttle;
492
493 if (test_bit(STATUS_EXIT_PENDING, &priv->status))
494 return;
495
496 /* temperature timer expired, ready to go into CT_KILL state */
497 if (tt->state != IWL_TI_CT_KILL) {
498 IWL_DEBUG_POWER(priv, "entering CT_KILL state when temperature timer expired\n");
499 tt->state = IWL_TI_CT_KILL;
500 set_bit(STATUS_CT_KILL, &priv->status);
501 iwl_perform_ct_kill_task(priv, true);
502 }
503}
504
505static void iwl_prepare_ct_kill_task(struct iwl_priv *priv)
506{
507 IWL_DEBUG_POWER(priv, "Prepare to enter IWL_TI_CT_KILL\n");
508 /* make request to retrieve statistics information */
ef8d5529 509 iwl_send_statistics_request(priv, CMD_SYNC, false);
7812b167
WYG		 510 /* Reschedule the ct_kill wait timer */
511 mod_timer(&priv->thermal_throttle.ct_kill_waiting_tm,
512 jiffies + msecs_to_jiffies(CT_KILL_WAITING_DURATION));
513}
514
39b73fb1
WYG		 515#define IWL_MINIMAL_POWER_THRESHOLD (CT_KILL_THRESHOLD_LEGACY)
516#define IWL_REDUCED_PERFORMANCE_THRESHOLD_2 (100)
517#define IWL_REDUCED_PERFORMANCE_THRESHOLD_1 (90)
518
519/*
520 * Legacy thermal throttling
521 * 1) Avoid NIC destruction due to high temperatures
522 * Chip will identify dangerously high temperatures that can
523 * harm the device and will power down
524 * 2) Avoid the NIC power down due to high temperature
525 * Throttle early enough to lower the power consumption before
526 * drastic steps are needed
527 */
7812b167 528static void iwl_legacy_tt_handler(struct iwl_priv *priv, s32 temp, bool force)
39b73fb1 529{
3ad3b92a 530 struct iwl_tt_mgmt *tt = &priv->thermal_throttle;
ee9f2989 531 enum iwl_tt_state old_state;
39b73fb1
WYG		 532
533#ifdef CONFIG_IWLWIFI_DEBUG
534 if ((tt->tt_previous_temp) &&
535 (temp > tt->tt_previous_temp) &&
536 ((temp - tt->tt_previous_temp) >
537 IWL_TT_INCREASE_MARGIN)) {
538 IWL_DEBUG_POWER(priv,
539 "Temperature increase %d degree Celsius\n",
540 (temp - tt->tt_previous_temp));
541 }
542#endif
ee9f2989 543 old_state = tt->state;
39b73fb1
WYG		 544 /* in Celsius */
545 if (temp >= IWL_MINIMAL_POWER_THRESHOLD)
ee9f2989 546 tt->state = IWL_TI_CT_KILL;
39b73fb1 547 else if (temp >= IWL_REDUCED_PERFORMANCE_THRESHOLD_2)
ee9f2989 548 tt->state = IWL_TI_2;
39b73fb1 549 else if (temp >= IWL_REDUCED_PERFORMANCE_THRESHOLD_1)
ee9f2989 550 tt->state = IWL_TI_1;
39b73fb1 551 else
ee9f2989 552 tt->state = IWL_TI_0;
39b73fb1
WYG		 553
554#ifdef CONFIG_IWLWIFI_DEBUG
555 tt->tt_previous_temp = temp;
556#endif
7812b167
WYG		 557 /* stop ct_kill_waiting_tm timer */
558 del_timer_sync(&priv->thermal_throttle.ct_kill_waiting_tm);
ee9f2989 559 if (tt->state != old_state) {
ee9f2989 560 switch (tt->state) {
39b73fb1 561 case IWL_TI_0:
e312c24c
JB		 562 /*
563 * When the system is ready to go back to IWL_TI_0
564 * we only have to call iwl_power_update_mode() to
565 * do so.
39b73fb1 566 */
39b73fb1
WYG		 567 break;
568 case IWL_TI_1:
569 tt->tt_power_mode = IWL_POWER_INDEX_3;
570 break;
571 case IWL_TI_2:
572 tt->tt_power_mode = IWL_POWER_INDEX_4;
573 break;
574 default:
575 tt->tt_power_mode = IWL_POWER_INDEX_5;
576 break;
577 }
a28027cd 578 mutex_lock(&priv->mutex);
7812b167
WYG		 579 if (old_state == IWL_TI_CT_KILL)
580 clear_bit(STATUS_CT_KILL, &priv->status);
581 if (tt->state != IWL_TI_CT_KILL &&
582 iwl_power_update_mode(priv, true)) {
39b73fb1
WYG		 583 /* TT state not updated
584 * try again during next temperature read
585 */
7812b167
WYG		 586 if (old_state == IWL_TI_CT_KILL)
587 set_bit(STATUS_CT_KILL, &priv->status);
ee9f2989 588 tt->state = old_state;
39b73fb1
WYG		 589 IWL_ERR(priv, "Cannot update power mode, "
590 "TT state not updated\n");
591 } else {
7812b167
WYG		 592 if (tt->state == IWL_TI_CT_KILL) {
593 if (force) {
594 set_bit(STATUS_CT_KILL, &priv->status);
595 iwl_perform_ct_kill_task(priv, true);
596 } else {
597 iwl_prepare_ct_kill_task(priv);
598 tt->state = old_state;
599 }
600 } else if (old_state == IWL_TI_CT_KILL &&
ee9f2989 601 tt->state != IWL_TI_CT_KILL)
39b73fb1 602 iwl_perform_ct_kill_task(priv, false);
39b73fb1
WYG		 603 IWL_DEBUG_POWER(priv, "Temperature state changed %u\n",
604 tt->state);
605 IWL_DEBUG_POWER(priv, "Power Index change to %u\n",
606 tt->tt_power_mode);
607 }
a28027cd 608 mutex_unlock(&priv->mutex);
39b73fb1
WYG		 609 }
610}
611
46f9381a
WYG		 612/*
613 * Advance thermal throttling
614 * 1) Avoid NIC destruction due to high temperatures
615 * Chip will identify dangerously high temperatures that can
616 * harm the device and will power down
617 * 2) Avoid the NIC power down due to high temperature
618 * Throttle early enough to lower the power consumption before
619 * drastic steps are needed
620 * Actions include relaxing the power down sleep thresholds and
621 * decreasing the number of TX streams
622 * 3) Avoid throughput performance impact as much as possible
623 *
624 *=============================================================================
625 * Condition Nxt State Condition Nxt State Condition Nxt State
626 *-----------------------------------------------------------------------------
7812b167
WYG		 627 * IWL_TI_0 T >= 114 CT_KILL 114>T>=105 TI_1 N/A N/A
628 * IWL_TI_1 T >= 114 CT_KILL 114>T>=110 TI_2 T<=95 TI_0
629 * IWL_TI_2 T >= 114 CT_KILL T<=100 TI_1
46f9381a
WYG		 630 * IWL_CT_KILL N/A N/A N/A N/A T<=95 TI_0
631 *=============================================================================
632 */
7812b167 633static void iwl_advance_tt_handler(struct iwl_priv *priv, s32 temp, bool force)
46f9381a 634{
3ad3b92a 635 struct iwl_tt_mgmt *tt = &priv->thermal_throttle;
46f9381a
WYG		 636 int i;
637 bool changed = false;
638 enum iwl_tt_state old_state;
639 struct iwl_tt_trans *transaction;
640
641 old_state = tt->state;
642 for (i = 0; i < IWL_TI_STATE_MAX - 1; i++) {
643 /* based on the current TT state,
644 * find the curresponding transaction table
645 * each table has (IWL_TI_STATE_MAX - 1) entries
646 * tt->transaction + ((old_state * (IWL_TI_STATE_MAX - 1))
647 * will advance to the correct table.
648 * then based on the current temperature
649 * find the next state need to transaction to
650 * go through all the possible (IWL_TI_STATE_MAX - 1) entries
651 * in the current table to see if transaction is needed
652 */
653 transaction = tt->transaction +
654 ((old_state * (IWL_TI_STATE_MAX - 1)) + i);
655 if (temp >= transaction->tt_low &&
656 temp <= transaction->tt_high) {
657#ifdef CONFIG_IWLWIFI_DEBUG
658 if ((tt->tt_previous_temp) &&
659 (temp > tt->tt_previous_temp) &&
660 ((temp - tt->tt_previous_temp) >
661 IWL_TT_INCREASE_MARGIN)) {
662 IWL_DEBUG_POWER(priv,
663 "Temperature increase %d "
664 "degree Celsius\n",
665 (temp - tt->tt_previous_temp));
666 }
667 tt->tt_previous_temp = temp;
668#endif
669 if (old_state !=
670 transaction->next_state) {
671 changed = true;
672 tt->state =
673 transaction->next_state;
674 }
675 break;
676 }
677 }
7812b167
WYG		 678 /* stop ct_kill_waiting_tm timer */
679 del_timer_sync(&priv->thermal_throttle.ct_kill_waiting_tm);
46f9381a
WYG		 680 if (changed) {
681 struct iwl_rxon_cmd *rxon = &priv->staging_rxon;
46f9381a
WYG		 682
683 if (tt->state >= IWL_TI_1) {
46f9381a
WYG		 684 /* force PI = IWL_POWER_INDEX_5 in the case of TI > 0 */
685 tt->tt_power_mode = IWL_POWER_INDEX_5;
686 if (!iwl_ht_enabled(priv))
687 /* disable HT */
688 rxon->flags &= ~(RXON_FLG_CHANNEL_MODE_MSK |
689 RXON_FLG_CTRL_CHANNEL_LOC_HI_MSK |
7aafef1c 690 RXON_FLG_HT40_PROT_MSK |
46f9381a
WYG		 691 RXON_FLG_HT_PROT_MSK);
692 else {
693 /* check HT capability and set
694 * according to the system HT capability
695 * in case get disabled before */
696 iwl_set_rxon_ht(priv, &priv->current_ht_config);
697 }
698
699 } else {
e312c24c
JB		 700 /*
701 * restore system power setting -- it will be
702 * recalculated automatically.
46f9381a 703 */
e312c24c 704
46f9381a
WYG		 705 /* check HT capability and set
706 * according to the system HT capability
707 * in case get disabled before */
708 iwl_set_rxon_ht(priv, &priv->current_ht_config);
709 }
a28027cd 710 mutex_lock(&priv->mutex);
7812b167
WYG		 711 if (old_state == IWL_TI_CT_KILL)
712 clear_bit(STATUS_CT_KILL, &priv->status);
713 if (tt->state != IWL_TI_CT_KILL &&
714 iwl_power_update_mode(priv, true)) {
46f9381a
WYG		 715 /* TT state not updated
716 * try again during next temperature read
717 */
718 IWL_ERR(priv, "Cannot update power mode, "
719 "TT state not updated\n");
7812b167
WYG		 720 if (old_state == IWL_TI_CT_KILL)
721 set_bit(STATUS_CT_KILL, &priv->status);
46f9381a
WYG		 722 tt->state = old_state;
723 } else {
724 IWL_DEBUG_POWER(priv,
725 "Thermal Throttling to new state: %u\n",
726 tt->state);
727 if (old_state != IWL_TI_CT_KILL &&
728 tt->state == IWL_TI_CT_KILL) {
7812b167
WYG		 729 if (force) {
730 IWL_DEBUG_POWER(priv,
731 "Enter IWL_TI_CT_KILL\n");
732 set_bit(STATUS_CT_KILL, &priv->status);
733 iwl_perform_ct_kill_task(priv, true);
734 } else {
735 iwl_prepare_ct_kill_task(priv);
736 tt->state = old_state;
737 }
46f9381a
WYG		 738 } else if (old_state == IWL_TI_CT_KILL &&
739 tt->state != IWL_TI_CT_KILL) {
740 IWL_DEBUG_POWER(priv, "Exit IWL_TI_CT_KILL\n");
741 iwl_perform_ct_kill_task(priv, false);
742 }
743 }
a28027cd 744 mutex_unlock(&priv->mutex);
46f9381a
WYG		 745 }
746}
747
39b73fb1
WYG		 748/* Card State Notification indicated reach critical temperature
749 * if PSP not enable, no Thermal Throttling function will be performed
750 * just set the GP1 bit to acknowledge the event
751 * otherwise, go into IWL_TI_CT_KILL state
752 * since Card State Notification will not provide any temperature reading
46f9381a 753 * for Legacy mode
39b73fb1 754 * so just pass the CT_KILL temperature to iwl_legacy_tt_handler()
46f9381a
WYG		 755 * for advance mode
756 * pass CT_KILL_THRESHOLD+1 to make sure move into IWL_TI_CT_KILL state
39b73fb1 757 */
a28027cd 758static void iwl_bg_ct_enter(struct work_struct *work)
39b73fb1 759{
a28027cd 760 struct iwl_priv *priv = container_of(work, struct iwl_priv, ct_enter);
3ad3b92a 761 struct iwl_tt_mgmt *tt = &priv->thermal_throttle;
39b73fb1
WYG		 762
763 if (test_bit(STATUS_EXIT_PENDING, &priv->status))
764 return;
765
a28027cd
WYG		 766 if (!iwl_is_ready(priv))
767 return;
768
39b73fb1
WYG		 769 if (tt->state != IWL_TI_CT_KILL) {
770 IWL_ERR(priv, "Device reached critical temperature "
771 "- ucode going to sleep!\n");
3ad3b92a 772 if (!priv->thermal_throttle.advanced_tt)
46f9381a 773 iwl_legacy_tt_handler(priv,
7812b167
WYG		 774 IWL_MINIMAL_POWER_THRESHOLD,
775 true);
46f9381a
WYG		 776 else
777 iwl_advance_tt_handler(priv,
7812b167 778 CT_KILL_THRESHOLD + 1, true);
39b73fb1
WYG		 779 }
780}
39b73fb1
WYG		 781
782/* Card State Notification indicated out of critical temperature
783 * since Card State Notification will not provide any temperature reading
784 * so pass the IWL_REDUCED_PERFORMANCE_THRESHOLD_2 temperature
785 * to iwl_legacy_tt_handler() to get out of IWL_CT_KILL state
786 */
a28027cd 787static void iwl_bg_ct_exit(struct work_struct *work)
39b73fb1 788{
a28027cd 789 struct iwl_priv *priv = container_of(work, struct iwl_priv, ct_exit);
3ad3b92a 790 struct iwl_tt_mgmt *tt = &priv->thermal_throttle;
39b73fb1
WYG		 791
792 if (test_bit(STATUS_EXIT_PENDING, &priv->status))
793 return;
794
a28027cd
WYG		 795 if (!iwl_is_ready(priv))
796 return;
797
39b73fb1 798 /* stop ct_kill_exit_tm timer */
3ad3b92a 799 del_timer_sync(&priv->thermal_throttle.ct_kill_exit_tm);
39b73fb1
WYG		 800
801 if (tt->state == IWL_TI_CT_KILL) {
802 IWL_ERR(priv,
803 "Device temperature below critical"
804 "- ucode awake!\n");
7812b167
WYG		 805 /*
806 * exit from CT_KILL state
807 * reset the current temperature reading
808 */
809 priv->temperature = 0;
3ad3b92a 810 if (!priv->thermal_throttle.advanced_tt)
46f9381a 811 iwl_legacy_tt_handler(priv,
7812b167
WYG		 812 IWL_REDUCED_PERFORMANCE_THRESHOLD_2,
813 true);
46f9381a 814 else
7812b167
WYG		 815 iwl_advance_tt_handler(priv, CT_KILL_EXIT_THRESHOLD,
816 true);
39b73fb1
WYG		 817 }
818}
a28027cd
WYG		 819
820void iwl_tt_enter_ct_kill(struct iwl_priv *priv)
821{
822 if (test_bit(STATUS_EXIT_PENDING, &priv->status))
823 return;
824
825 IWL_DEBUG_POWER(priv, "Queueing critical temperature enter.\n");
826 queue_work(priv->workqueue, &priv->ct_enter);
827}
828EXPORT_SYMBOL(iwl_tt_enter_ct_kill);
829
830void iwl_tt_exit_ct_kill(struct iwl_priv *priv)
831{
832 if (test_bit(STATUS_EXIT_PENDING, &priv->status))
833 return;
834
835 IWL_DEBUG_POWER(priv, "Queueing critical temperature exit.\n");
836 queue_work(priv->workqueue, &priv->ct_exit);
837}
39b73fb1
WYG		 838EXPORT_SYMBOL(iwl_tt_exit_ct_kill);
839
a28027cd 840static void iwl_bg_tt_work(struct work_struct *work)
39b73fb1 841{
a28027cd 842 struct iwl_priv *priv = container_of(work, struct iwl_priv, tt_work);
39b73fb1
WYG		 843 s32 temp = priv->temperature; /* degrees CELSIUS except 4965 */
844
845 if (test_bit(STATUS_EXIT_PENDING, &priv->status))
846 return;
847
848 if ((priv->hw_rev & CSR_HW_REV_TYPE_MSK) == CSR_HW_REV_TYPE_4965)
849 temp = KELVIN_TO_CELSIUS(priv->temperature);
850
3ad3b92a 851 if (!priv->thermal_throttle.advanced_tt)
7812b167 852 iwl_legacy_tt_handler(priv, temp, false);
46f9381a 853 else
7812b167 854 iwl_advance_tt_handler(priv, temp, false);
39b73fb1 855}
a28027cd
WYG		 856
857void iwl_tt_handler(struct iwl_priv *priv)
858{
859 if (test_bit(STATUS_EXIT_PENDING, &priv->status))
860 return;
861
862 IWL_DEBUG_POWER(priv, "Queueing thermal throttling work.\n");
863 queue_work(priv->workqueue, &priv->tt_work);
864}
39b73fb1
WYG		 865EXPORT_SYMBOL(iwl_tt_handler);
866
867/* Thermal throttling initialization
46f9381a
WYG		 868 * For advance thermal throttling:
869 * Initialize Thermal Index and temperature threshold table
870 * Initialize thermal throttling restriction table
39b73fb1
WYG		 871 */
872void iwl_tt_initialize(struct iwl_priv *priv)
873{
3ad3b92a 874 struct iwl_tt_mgmt *tt = &priv->thermal_throttle;
46f9381a
WYG		 875 int size = sizeof(struct iwl_tt_trans) * (IWL_TI_STATE_MAX - 1);
876 struct iwl_tt_trans *transaction;
39b73fb1
WYG		 877
878 IWL_DEBUG_POWER(priv, "Initialize Thermal Throttling \n");
879
880 memset(tt, 0, sizeof(struct iwl_tt_mgmt));
881
882 tt->state = IWL_TI_0;
3ad3b92a
JB		 883 init_timer(&priv->thermal_throttle.ct_kill_exit_tm);
884 priv->thermal_throttle.ct_kill_exit_tm.data = (unsigned long)priv;
7812b167
WYG		 885 priv->thermal_throttle.ct_kill_exit_tm.function =
886 iwl_tt_check_exit_ct_kill;
887 init_timer(&priv->thermal_throttle.ct_kill_waiting_tm);
888 priv->thermal_throttle.ct_kill_waiting_tm.data = (unsigned long)priv;
889 priv->thermal_throttle.ct_kill_waiting_tm.function =
890 iwl_tt_ready_for_ct_kill;
a28027cd
WYG		 891 /* setup deferred ct kill work */
892 INIT_WORK(&priv->tt_work, iwl_bg_tt_work);
893 INIT_WORK(&priv->ct_enter, iwl_bg_ct_enter);
894 INIT_WORK(&priv->ct_exit, iwl_bg_ct_exit);
895
6047b4f9 896 if (priv->cfg->adv_thermal_throttle) {
46f9381a
WYG		 897 IWL_DEBUG_POWER(priv, "Advanced Thermal Throttling\n");
898 tt->restriction = kzalloc(sizeof(struct iwl_tt_restriction) *
899 IWL_TI_STATE_MAX, GFP_KERNEL);
900 tt->transaction = kzalloc(sizeof(struct iwl_tt_trans) *
901 IWL_TI_STATE_MAX * (IWL_TI_STATE_MAX - 1),
902 GFP_KERNEL);
903 if (!tt->restriction || !tt->transaction) {
904 IWL_ERR(priv, "Fallback to Legacy Throttling\n");
3ad3b92a 905 priv->thermal_throttle.advanced_tt = false;
46f9381a
WYG		 906 kfree(tt->restriction);
907 tt->restriction = NULL;
908 kfree(tt->transaction);
909 tt->transaction = NULL;
910 } else {
911 transaction = tt->transaction +
912 (IWL_TI_0 * (IWL_TI_STATE_MAX - 1));
913 memcpy(transaction, &tt_range_0[0], size);
914 transaction = tt->transaction +
915 (IWL_TI_1 * (IWL_TI_STATE_MAX - 1));
916 memcpy(transaction, &tt_range_1[0], size);
917 transaction = tt->transaction +
918 (IWL_TI_2 * (IWL_TI_STATE_MAX - 1));
919 memcpy(transaction, &tt_range_2[0], size);
920 transaction = tt->transaction +
921 (IWL_TI_CT_KILL * (IWL_TI_STATE_MAX - 1));
922 memcpy(transaction, &tt_range_3[0], size);
923 size = sizeof(struct iwl_tt_restriction) *
924 IWL_TI_STATE_MAX;
925 memcpy(tt->restriction,
926 &restriction_range[0], size);
3ad3b92a 927 priv->thermal_throttle.advanced_tt = true;
46f9381a 928 }
6047b4f9 929 } else {
46f9381a 930 IWL_DEBUG_POWER(priv, "Legacy Thermal Throttling\n");
3ad3b92a 931 priv->thermal_throttle.advanced_tt = false;
46f9381a 932 }
39b73fb1
WYG		 933}
934EXPORT_SYMBOL(iwl_tt_initialize);
935
936/* cleanup thermal throttling management related memory and timer */
937void iwl_tt_exit(struct iwl_priv *priv)
938{
3ad3b92a 939 struct iwl_tt_mgmt *tt = &priv->thermal_throttle;
46f9381a 940
39b73fb1 941 /* stop ct_kill_exit_tm timer if activated */
3ad3b92a 942 del_timer_sync(&priv->thermal_throttle.ct_kill_exit_tm);
7812b167
WYG		 943 /* stop ct_kill_waiting_tm timer if activated */
944 del_timer_sync(&priv->thermal_throttle.ct_kill_waiting_tm);
a28027cd
WYG		 945 cancel_work_sync(&priv->tt_work);
946 cancel_work_sync(&priv->ct_enter);
947 cancel_work_sync(&priv->ct_exit);
46f9381a 948
3ad3b92a 949 if (priv->thermal_throttle.advanced_tt) {
46f9381a
WYG		 950 /* free advance thermal throttling memory */
951 kfree(tt->restriction);
952 tt->restriction = NULL;
953 kfree(tt->transaction);
954 tt->transaction = NULL;
955 }
39b73fb1
WYG		 956}
957EXPORT_SYMBOL(iwl_tt_exit);
958
a96a27f9 959/* initialize to default */
5da4b55f
MA		 960void iwl_power_initialize(struct iwl_priv *priv)
961{
e312c24c
JB		 962 u16 lctl = iwl_pcie_link_ctl(priv);
963
964 priv->power_data.pci_pm = !(lctl & PCI_CFG_LINK_CTRL_VAL_L0S_EN);
965
966 priv->power_data.debug_sleep_level_override = -1;
967
968 memset(&priv->power_data.sleep_cmd, 0,
969 sizeof(priv->power_data.sleep_cmd));
5da4b55f
MA		 970}
971EXPORT_SYMBOL(iwl_power_initialize);
Linux kernel - Deliverables
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