blob: a3e21f1ee315f77b717c3a282cd4f6cedc91b96d [file] [log] [blame]
Johannes Berg8ca151b2013-01-24 14:25:36 +01001/******************************************************************************
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 *
Emmanuel Grumbach51368bf2013-12-30 13:15:54 +02008 * Copyright(c) 2012 - 2014 Intel Corporation. All rights reserved.
Johannes Berg8ca151b2013-01-24 14:25:36 +01009 *
10 * This program is free software; you can redistribute it and/or modify
11 * it under the terms of version 2 of the GNU General Public License as
12 * published by the Free Software Foundation.
13 *
14 * This program is distributed in the hope that it will be useful, but
15 * WITHOUT ANY WARRANTY; without even the implied warranty of
16 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
17 * General Public License for more details.
18 *
19 * You should have received a copy of the GNU General Public License
20 * along with this program; if not, write to the Free Software
21 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110,
22 * USA
23 *
24 * The full GNU General Public License is included in this distribution
Emmanuel Grumbach410dc5a2013-02-18 09:22:28 +020025 * in the file called COPYING.
Johannes Berg8ca151b2013-01-24 14:25:36 +010026 *
27 * Contact Information:
28 * Intel Linux Wireless <ilw@linux.intel.com>
29 * Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497
30 *
31 * BSD LICENSE
32 *
Emmanuel Grumbach51368bf2013-12-30 13:15:54 +020033 * Copyright(c) 2012 - 2014 Intel Corporation. All rights reserved.
Johannes Berg8ca151b2013-01-24 14:25:36 +010034 * 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#include <linux/module.h>
64#include <net/mac80211.h>
65
66#include "iwl-notif-wait.h"
67#include "iwl-trans.h"
68#include "iwl-op-mode.h"
69#include "iwl-fw.h"
70#include "iwl-debug.h"
71#include "iwl-drv.h"
72#include "iwl-modparams.h"
73#include "mvm.h"
74#include "iwl-phy-db.h"
75#include "iwl-eeprom-parse.h"
76#include "iwl-csr.h"
77#include "iwl-io.h"
78#include "iwl-prph.h"
79#include "rs.h"
80#include "fw-api-scan.h"
81#include "time-event.h"
82
83/*
84 * module name, copyright, version, etc.
85 */
86#define DRV_DESCRIPTION "The new Intel(R) wireless AGN driver for Linux"
87
88#define DRV_VERSION IWLWIFI_VERSION
89
90MODULE_DESCRIPTION(DRV_DESCRIPTION);
91MODULE_VERSION(DRV_VERSION);
92MODULE_AUTHOR(DRV_COPYRIGHT " " DRV_AUTHOR);
93MODULE_LICENSE("GPL");
94
95static const struct iwl_op_mode_ops iwl_mvm_ops;
96
97struct iwl_mvm_mod_params iwlmvm_mod_params = {
98 .power_scheme = IWL_POWER_SCHEME_BPS,
99 /* rest of fields are 0 by default */
100};
101
102module_param_named(init_dbg, iwlmvm_mod_params.init_dbg, bool, S_IRUGO);
103MODULE_PARM_DESC(init_dbg,
104 "set to true to debug an ASSERT in INIT fw (default: false");
105module_param_named(power_scheme, iwlmvm_mod_params.power_scheme, int, S_IRUGO);
106MODULE_PARM_DESC(power_scheme,
107 "power management scheme: 1-active, 2-balanced, 3-low power, default: 2");
108
109/*
110 * module init and exit functions
111 */
112static int __init iwl_mvm_init(void)
113{
114 int ret;
115
116 ret = iwl_mvm_rate_control_register();
117 if (ret) {
118 pr_err("Unable to register rate control algorithm: %d\n", ret);
119 return ret;
120 }
121
122 ret = iwl_opmode_register("iwlmvm", &iwl_mvm_ops);
123
124 if (ret) {
125 pr_err("Unable to register MVM op_mode: %d\n", ret);
126 iwl_mvm_rate_control_unregister();
127 }
128
129 return ret;
130}
131module_init(iwl_mvm_init);
132
133static void __exit iwl_mvm_exit(void)
134{
135 iwl_opmode_deregister("iwlmvm");
136 iwl_mvm_rate_control_unregister();
137}
138module_exit(iwl_mvm_exit);
139
140static void iwl_mvm_nic_config(struct iwl_op_mode *op_mode)
141{
142 struct iwl_mvm *mvm = IWL_OP_MODE_GET_MVM(op_mode);
143 u8 radio_cfg_type, radio_cfg_step, radio_cfg_dash;
144 u32 reg_val = 0;
145
Emmanuel Grumbachd110cb52013-03-07 17:27:40 +0200146 radio_cfg_type = (mvm->fw->phy_config & FW_PHY_CFG_RADIO_TYPE) >>
147 FW_PHY_CFG_RADIO_TYPE_POS;
148 radio_cfg_step = (mvm->fw->phy_config & FW_PHY_CFG_RADIO_STEP) >>
149 FW_PHY_CFG_RADIO_STEP_POS;
150 radio_cfg_dash = (mvm->fw->phy_config & FW_PHY_CFG_RADIO_DASH) >>
151 FW_PHY_CFG_RADIO_DASH_POS;
Johannes Berg8ca151b2013-01-24 14:25:36 +0100152
153 /* SKU control */
154 reg_val |= CSR_HW_REV_STEP(mvm->trans->hw_rev) <<
155 CSR_HW_IF_CONFIG_REG_POS_MAC_STEP;
156 reg_val |= CSR_HW_REV_DASH(mvm->trans->hw_rev) <<
157 CSR_HW_IF_CONFIG_REG_POS_MAC_DASH;
158
159 /* radio configuration */
160 reg_val |= radio_cfg_type << CSR_HW_IF_CONFIG_REG_POS_PHY_TYPE;
161 reg_val |= radio_cfg_step << CSR_HW_IF_CONFIG_REG_POS_PHY_STEP;
162 reg_val |= radio_cfg_dash << CSR_HW_IF_CONFIG_REG_POS_PHY_DASH;
163
164 WARN_ON((radio_cfg_type << CSR_HW_IF_CONFIG_REG_POS_PHY_TYPE) &
165 ~CSR_HW_IF_CONFIG_REG_MSK_PHY_TYPE);
166
167 /* silicon bits */
168 reg_val |= CSR_HW_IF_CONFIG_REG_BIT_RADIO_SI;
Johannes Berg8ca151b2013-01-24 14:25:36 +0100169
Lilach Edelsteine139dc42013-01-13 13:31:10 +0200170 iwl_trans_set_bits_mask(mvm->trans, CSR_HW_IF_CONFIG_REG,
171 CSR_HW_IF_CONFIG_REG_MSK_MAC_DASH |
172 CSR_HW_IF_CONFIG_REG_MSK_MAC_STEP |
173 CSR_HW_IF_CONFIG_REG_MSK_PHY_TYPE |
174 CSR_HW_IF_CONFIG_REG_MSK_PHY_STEP |
175 CSR_HW_IF_CONFIG_REG_MSK_PHY_DASH |
176 CSR_HW_IF_CONFIG_REG_BIT_RADIO_SI |
177 CSR_HW_IF_CONFIG_REG_BIT_MAC_SI,
178 reg_val);
Johannes Berg8ca151b2013-01-24 14:25:36 +0100179
180 IWL_DEBUG_INFO(mvm, "Radio type=0x%x-0x%x-0x%x\n", radio_cfg_type,
181 radio_cfg_step, radio_cfg_dash);
182
183 /*
184 * W/A : NIC is stuck in a reset state after Early PCIe power off
185 * (PCIe power is lost before PERST# is asserted), causing ME FW
186 * to lose ownership and not being able to obtain it back.
187 */
Eran Harary3073d8c2013-12-29 14:09:59 +0200188 if (mvm->trans->cfg->device_family != IWL_DEVICE_FAMILY_8000)
189 iwl_set_bits_mask_prph(mvm->trans, APMG_PS_CTRL_REG,
190 APMG_PS_CTRL_EARLY_PWR_OFF_RESET_DIS,
191 ~APMG_PS_CTRL_EARLY_PWR_OFF_RESET_DIS);
Johannes Berg8ca151b2013-01-24 14:25:36 +0100192}
193
194struct iwl_rx_handlers {
195 u8 cmd_id;
196 bool async;
197 int (*fn)(struct iwl_mvm *mvm, struct iwl_rx_cmd_buffer *rxb,
198 struct iwl_device_cmd *cmd);
199};
200
201#define RX_HANDLER(_cmd_id, _fn, _async) \
202 { .cmd_id = _cmd_id , .fn = _fn , .async = _async }
203
204/*
205 * Handlers for fw notifications
206 * Convention: RX_HANDLER(CMD_NAME, iwl_mvm_rx_CMD_NAME
207 * This list should be in order of frequency for performance purposes.
208 *
209 * The handler can be SYNC - this means that it will be called in the Rx path
210 * which can't acquire mvm->mutex. If the handler needs to hold mvm->mutex (and
211 * only in this case!), it should be set as ASYNC. In that case, it will be
212 * called from a worker with mvm->mutex held.
213 */
214static const struct iwl_rx_handlers iwl_mvm_rx_handlers[] = {
215 RX_HANDLER(REPLY_RX_MPDU_CMD, iwl_mvm_rx_rx_mpdu, false),
216 RX_HANDLER(REPLY_RX_PHY_CMD, iwl_mvm_rx_rx_phy_cmd, false),
217 RX_HANDLER(TX_CMD, iwl_mvm_rx_tx_cmd, false),
218 RX_HANDLER(BA_NOTIF, iwl_mvm_rx_ba_notif, false),
Johannes Berg8ca151b2013-01-24 14:25:36 +0100219
Emmanuel Grumbachf421f9c2013-01-17 14:20:29 +0200220 RX_HANDLER(BT_PROFILE_NOTIFICATION, iwl_mvm_rx_bt_coex_notif, true),
Ilan Peer571765c2013-03-05 15:26:03 +0200221 RX_HANDLER(BEACON_NOTIFICATION, iwl_mvm_rx_beacon_notif, false),
Eytan Lifshitz9ee718a2013-05-19 19:14:41 +0300222 RX_HANDLER(STATISTICS_NOTIFICATION, iwl_mvm_rx_statistics, true),
Emmanuel Grumbachb9fae2d2014-02-17 11:24:10 +0200223 RX_HANDLER(ANTENNA_COUPLING_NOTIFICATION,
224 iwl_mvm_rx_ant_coupling_notif, true),
Emmanuel Grumbachf421f9c2013-01-17 14:20:29 +0200225
Emmanuel Grumbach497b49d2013-06-02 20:54:48 +0300226 RX_HANDLER(TIME_EVENT_NOTIFICATION, iwl_mvm_rx_time_event_notif, false),
227
Johannes Berg3e56ead2013-02-15 22:23:18 +0100228 RX_HANDLER(EOSP_NOTIFICATION, iwl_mvm_rx_eosp_notif, false),
229
Emmanuel Grumbach497b49d2013-06-02 20:54:48 +0300230 RX_HANDLER(SCAN_REQUEST_CMD, iwl_mvm_rx_scan_response, false),
Arik Nemtsov91b80252014-02-10 12:49:39 +0200231 RX_HANDLER(SCAN_COMPLETE_NOTIFICATION, iwl_mvm_rx_scan_complete, true),
David Spinadel35a000b2013-08-28 09:29:43 +0300232 RX_HANDLER(SCAN_OFFLOAD_COMPLETE,
Johannes Berga6623e82014-01-27 15:40:53 +0100233 iwl_mvm_rx_scan_offload_complete_notif, true),
David Spinadel35a000b2013-08-28 09:29:43 +0300234 RX_HANDLER(MATCH_FOUND_NOTIFICATION, iwl_mvm_rx_sched_scan_results,
235 false),
Emmanuel Grumbach497b49d2013-06-02 20:54:48 +0300236
Johannes Berg8ca151b2013-01-24 14:25:36 +0100237 RX_HANDLER(RADIO_VERSION_NOTIFICATION, iwl_mvm_rx_radio_ver, false),
238 RX_HANDLER(CARD_STATE_NOTIFICATION, iwl_mvm_rx_card_state_notif, false),
239
Hila Gonend64048e2013-03-13 18:00:03 +0200240 RX_HANDLER(MISSED_BEACONS_NOTIFICATION, iwl_mvm_rx_missed_beacons_notif,
241 false),
242
Johannes Berg8ca151b2013-01-24 14:25:36 +0100243 RX_HANDLER(REPLY_ERROR, iwl_mvm_rx_fw_error, false),
Alexander Bondar175a70b2013-04-14 20:59:37 +0300244 RX_HANDLER(PSM_UAPSD_AP_MISBEHAVING_NOTIFICATION,
245 iwl_mvm_power_uapsd_misbehaving_ap_notif, false),
Johannes Berg8ca151b2013-01-24 14:25:36 +0100246};
247#undef RX_HANDLER
248#define CMD(x) [x] = #x
249
Johannes Berge5209262014-01-20 23:38:59 +0100250static const char *const iwl_mvm_cmd_strings[REPLY_MAX] = {
Johannes Berg8ca151b2013-01-24 14:25:36 +0100251 CMD(MVM_ALIVE),
252 CMD(REPLY_ERROR),
253 CMD(INIT_COMPLETE_NOTIF),
254 CMD(PHY_CONTEXT_CMD),
255 CMD(MGMT_MCAST_KEY),
256 CMD(TX_CMD),
257 CMD(TXPATH_FLUSH),
258 CMD(MAC_CONTEXT_CMD),
259 CMD(TIME_EVENT_CMD),
260 CMD(TIME_EVENT_NOTIFICATION),
261 CMD(BINDING_CONTEXT_CMD),
262 CMD(TIME_QUOTA_CMD),
Johannes Berg4ac6cb52013-08-08 09:30:13 +0200263 CMD(NON_QOS_TX_COUNTER_CMD),
Johannes Berg8ca151b2013-01-24 14:25:36 +0100264 CMD(RADIO_VERSION_NOTIFICATION),
265 CMD(SCAN_REQUEST_CMD),
266 CMD(SCAN_ABORT_CMD),
267 CMD(SCAN_START_NOTIFICATION),
268 CMD(SCAN_RESULTS_NOTIFICATION),
269 CMD(SCAN_COMPLETE_NOTIFICATION),
270 CMD(NVM_ACCESS_CMD),
271 CMD(PHY_CONFIGURATION_CMD),
272 CMD(CALIB_RES_NOTIF_PHY_DB),
273 CMD(SET_CALIB_DEFAULT_CMD),
274 CMD(CALIBRATION_COMPLETE_NOTIFICATION),
Max Stepanov5a258aa2013-04-07 09:11:21 +0300275 CMD(ADD_STA_KEY),
Johannes Berg8ca151b2013-01-24 14:25:36 +0100276 CMD(ADD_STA),
277 CMD(REMOVE_STA),
278 CMD(LQ_CMD),
279 CMD(SCAN_OFFLOAD_CONFIG_CMD),
David Spinadel35a000b2013-08-28 09:29:43 +0300280 CMD(MATCH_FOUND_NOTIFICATION),
Johannes Berg8ca151b2013-01-24 14:25:36 +0100281 CMD(SCAN_OFFLOAD_REQUEST_CMD),
282 CMD(SCAN_OFFLOAD_ABORT_CMD),
283 CMD(SCAN_OFFLOAD_COMPLETE),
284 CMD(SCAN_OFFLOAD_UPDATE_PROFILES_CMD),
285 CMD(POWER_TABLE_CMD),
286 CMD(WEP_KEY),
287 CMD(REPLY_RX_PHY_CMD),
288 CMD(REPLY_RX_MPDU_CMD),
Ilan Peer571765c2013-03-05 15:26:03 +0200289 CMD(BEACON_NOTIFICATION),
Johannes Berg8ca151b2013-01-24 14:25:36 +0100290 CMD(BEACON_TEMPLATE_CMD),
291 CMD(STATISTICS_NOTIFICATION),
Johannes Berg3e56ead2013-02-15 22:23:18 +0100292 CMD(EOSP_NOTIFICATION),
Matti Gottlieb88f2fd72013-07-09 15:25:46 +0300293 CMD(REDUCE_TX_POWER_CMD),
Johannes Berg8ca151b2013-01-24 14:25:36 +0100294 CMD(TX_ANT_CONFIGURATION_CMD),
295 CMD(D3_CONFIG_CMD),
Arik Nemtsov98ee7782013-10-02 16:58:09 +0300296 CMD(D0I3_END_CMD),
Johannes Berg8ca151b2013-01-24 14:25:36 +0100297 CMD(PROT_OFFLOAD_CONFIG_CMD),
298 CMD(OFFLOADS_QUERY_CMD),
299 CMD(REMOTE_WAKE_CONFIG_CMD),
300 CMD(WOWLAN_PATTERNS),
301 CMD(WOWLAN_CONFIGURATION),
302 CMD(WOWLAN_TSC_RSC_PARAM),
303 CMD(WOWLAN_TKIP_PARAM),
304 CMD(WOWLAN_KEK_KCK_MATERIAL),
305 CMD(WOWLAN_GET_STATUSES),
306 CMD(WOWLAN_TX_POWER_PER_DB),
307 CMD(NET_DETECT_CONFIG_CMD),
308 CMD(NET_DETECT_PROFILES_QUERY_CMD),
309 CMD(NET_DETECT_PROFILES_CMD),
310 CMD(NET_DETECT_HOTSPOTS_CMD),
311 CMD(NET_DETECT_HOTSPOTS_QUERY_CMD),
Emmanuel Grumbach3b4612f2013-03-03 09:14:51 +0200312 CMD(CARD_STATE_NOTIFICATION),
Hila Gonend64048e2013-03-13 18:00:03 +0200313 CMD(MISSED_BEACONS_NOTIFICATION),
Emmanuel Grumbachfb3ceb82013-01-14 15:04:01 +0200314 CMD(BT_COEX_PRIO_TABLE),
315 CMD(BT_COEX_PROT_ENV),
316 CMD(BT_PROFILE_NOTIFICATION),
317 CMD(BT_CONFIG),
Emmanuel Grumbach51b6b9e2013-05-02 15:01:24 +0300318 CMD(MCAST_FILTER_CMD),
Eliad Pellerc87163b2014-01-08 10:11:11 +0200319 CMD(BCAST_FILTER_CMD),
David Spinadel7a06a382014-01-09 09:55:38 +0200320 CMD(REPLY_SF_CFG_CMD),
Hila Gonen7df15b12012-12-12 11:16:19 +0200321 CMD(REPLY_BEACON_FILTERING_CMD),
Eytan Lifshitz9ee718a2013-05-19 19:14:41 +0300322 CMD(REPLY_THERMAL_MNG_BACKOFF),
Alexander Bondare811ada2013-03-10 15:29:44 +0200323 CMD(MAC_PM_POWER_TABLE),
Emmanuel Grumbachdac94da2013-06-18 07:35:27 +0300324 CMD(BT_COEX_CI),
Alexander Bondar175a70b2013-04-14 20:59:37 +0300325 CMD(PSM_UAPSD_AP_MISBEHAVING_NOTIFICATION),
Emmanuel Grumbachb9fae2d2014-02-17 11:24:10 +0200326 CMD(ANTENNA_COUPLING_NOTIFICATION),
Johannes Berg8ca151b2013-01-24 14:25:36 +0100327};
328#undef CMD
329
330/* this forward declaration can avoid to export the function */
331static void iwl_mvm_async_handlers_wk(struct work_struct *wk);
Eliad Peller37577fe2013-12-05 17:19:39 +0200332static void iwl_mvm_d0i3_exit_work(struct work_struct *wk);
Johannes Berg8ca151b2013-01-24 14:25:36 +0100333
Ido Yariv0c0e2c72014-01-16 21:12:02 -0500334static u32 calc_min_backoff(struct iwl_trans *trans, const struct iwl_cfg *cfg)
335{
336 const struct iwl_pwr_tx_backoff *pwr_tx_backoff = cfg->pwr_tx_backoffs;
337
338 if (!pwr_tx_backoff)
339 return 0;
340
341 while (pwr_tx_backoff->pwr) {
342 if (trans->dflt_pwr_limit >= pwr_tx_backoff->pwr)
343 return pwr_tx_backoff->backoff;
344
345 pwr_tx_backoff++;
346 }
347
348 return 0;
349}
350
Johannes Berg8ca151b2013-01-24 14:25:36 +0100351static struct iwl_op_mode *
352iwl_op_mode_mvm_start(struct iwl_trans *trans, const struct iwl_cfg *cfg,
353 const struct iwl_fw *fw, struct dentry *dbgfs_dir)
354{
355 struct ieee80211_hw *hw;
356 struct iwl_op_mode *op_mode;
357 struct iwl_mvm *mvm;
358 struct iwl_trans_config trans_cfg = {};
359 static const u8 no_reclaim_cmds[] = {
360 TX_CMD,
361 };
362 int err, scan_size;
Ido Yariv0c0e2c72014-01-16 21:12:02 -0500363 u32 min_backoff;
Johannes Berg8ca151b2013-01-24 14:25:36 +0100364
Emmanuel Grumbachc4d83272014-01-14 08:45:26 +0200365 /*
366 * We use IWL_MVM_STATION_COUNT to check the validity of the station
367 * index all over the driver - check that its value corresponds to the
368 * array size.
369 */
370 BUILD_BUG_ON(ARRAY_SIZE(mvm->fw_id_to_mac_id) != IWL_MVM_STATION_COUNT);
371
Johannes Berg8ca151b2013-01-24 14:25:36 +0100372 /********************************
373 * 1. Allocating and configuring HW data
374 ********************************/
375 hw = ieee80211_alloc_hw(sizeof(struct iwl_op_mode) +
376 sizeof(struct iwl_mvm),
377 &iwl_mvm_hw_ops);
378 if (!hw)
379 return NULL;
380
381 op_mode = hw->priv;
382 op_mode->ops = &iwl_mvm_ops;
Johannes Berg8ca151b2013-01-24 14:25:36 +0100383
384 mvm = IWL_OP_MODE_GET_MVM(op_mode);
385 mvm->dev = trans->dev;
386 mvm->trans = trans;
387 mvm->cfg = cfg;
388 mvm->fw = fw;
389 mvm->hw = hw;
390
Eran Harary291aa7c2013-07-03 11:00:06 +0300391 mvm->restart_fw = iwlwifi_mod_params.restart_fw ? -1 : 0;
392
Eytan Lifshitz19e737c2013-09-09 13:30:15 +0200393 mvm->aux_queue = 15;
394 mvm->first_agg_queue = 16;
395 mvm->last_agg_queue = mvm->cfg->base_params->num_of_queues - 1;
396 if (mvm->cfg->base_params->num_of_queues == 16) {
397 mvm->aux_queue = 11;
398 mvm->first_agg_queue = 12;
399 }
Lilach Edelstein1f3b0ff2013-10-06 13:03:32 +0200400 mvm->sf_state = SF_UNINIT;
Eytan Lifshitz19e737c2013-09-09 13:30:15 +0200401
Johannes Berg8ca151b2013-01-24 14:25:36 +0100402 mutex_init(&mvm->mutex);
403 spin_lock_init(&mvm->async_handlers_lock);
404 INIT_LIST_HEAD(&mvm->time_event_list);
405 INIT_LIST_HEAD(&mvm->async_handlers_list);
406 spin_lock_init(&mvm->time_event_lock);
407
408 INIT_WORK(&mvm->async_handlers_wk, iwl_mvm_async_handlers_wk);
409 INIT_WORK(&mvm->roc_done_wk, iwl_mvm_roc_done_wk);
410 INIT_WORK(&mvm->sta_drained_wk, iwl_mvm_sta_drained_wk);
Eliad Peller37577fe2013-12-05 17:19:39 +0200411 INIT_WORK(&mvm->d0i3_exit_work, iwl_mvm_d0i3_exit_work);
Johannes Berg8ca151b2013-01-24 14:25:36 +0100412
Arik Nemtsovb2492502014-03-13 12:21:50 +0200413 spin_lock_init(&mvm->d0i3_tx_lock);
414 skb_queue_head_init(&mvm->d0i3_tx);
415 init_waitqueue_head(&mvm->d0i3_exit_waitq);
416
Johannes Berg8ca151b2013-01-24 14:25:36 +0100417 SET_IEEE80211_DEV(mvm->hw, mvm->trans->dev);
418
419 /*
420 * Populate the state variables that the transport layer needs
421 * to know about.
422 */
423 trans_cfg.op_mode = op_mode;
424 trans_cfg.no_reclaim_cmds = no_reclaim_cmds;
425 trans_cfg.n_no_reclaim_cmds = ARRAY_SIZE(no_reclaim_cmds);
426 trans_cfg.rx_buf_size_8k = iwlwifi_mod_params.amsdu_size_8K;
427
Emmanuel Grumbach25b9ea52013-03-06 11:53:38 +0200428 if (mvm->fw->ucode_capa.flags & IWL_UCODE_TLV_FLAGS_DW_BC_TABLE)
Johannes Berg8ca151b2013-01-24 14:25:36 +0100429 trans_cfg.bc_table_dword = true;
430
431 if (!iwlwifi_mod_params.wd_disable)
432 trans_cfg.queue_watchdog_timeout = cfg->base_params->wd_timeout;
433 else
434 trans_cfg.queue_watchdog_timeout = IWL_WATCHDOG_DISABLED;
435
436 trans_cfg.command_names = iwl_mvm_cmd_strings;
437
438 trans_cfg.cmd_queue = IWL_MVM_CMD_QUEUE;
439 trans_cfg.cmd_fifo = IWL_MVM_CMD_FIFO;
440
441 snprintf(mvm->hw->wiphy->fw_version,
442 sizeof(mvm->hw->wiphy->fw_version),
443 "%s", fw->fw_version);
444
445 /* Configure transport layer */
446 iwl_trans_configure(mvm->trans, &trans_cfg);
447
448 trans->rx_mpdu_cmd = REPLY_RX_MPDU_CMD;
449 trans->rx_mpdu_cmd_hdr_size = sizeof(struct iwl_rx_mpdu_res_start);
450
451 /* set up notification wait support */
452 iwl_notification_wait_init(&mvm->notif_wait);
453
454 /* Init phy db */
455 mvm->phy_db = iwl_phy_db_init(trans);
456 if (!mvm->phy_db) {
457 IWL_ERR(mvm, "Cannot init phy_db\n");
458 goto out_free;
459 }
460
461 IWL_INFO(mvm, "Detected %s, REV=0x%X\n",
462 mvm->cfg->name, mvm->trans->hw_rev);
463
Ido Yariv0c0e2c72014-01-16 21:12:02 -0500464 min_backoff = calc_min_backoff(trans, cfg);
465 iwl_mvm_tt_initialize(mvm, min_backoff);
Eytan Lifshitz9ee718a2013-05-19 19:14:41 +0300466
Eytan Lifshitz81a67e32013-09-11 12:39:18 +0200467 /*
468 * If the NVM exists in an external file,
469 * there is no need to unnecessarily power up the NIC at driver load
470 */
471 if (iwlwifi_mod_params.nvm_file) {
Eliad Peller8c678ed2013-12-09 13:15:02 +0200472 err = iwl_nvm_init(mvm);
473 if (err)
474 goto out_free;
Eytan Lifshitz81a67e32013-09-11 12:39:18 +0200475 } else {
476 err = iwl_trans_start_hw(mvm->trans);
477 if (err)
478 goto out_free;
Johannes Berg8ca151b2013-01-24 14:25:36 +0100479
Eytan Lifshitz81a67e32013-09-11 12:39:18 +0200480 mutex_lock(&mvm->mutex);
481 err = iwl_run_init_mvm_ucode(mvm, true);
Arik Nemtsova4082842013-11-24 19:10:46 +0200482 iwl_trans_stop_device(trans);
Eytan Lifshitz81a67e32013-09-11 12:39:18 +0200483 mutex_unlock(&mvm->mutex);
484 /* returns 0 if successful, 1 if success but in rfkill */
485 if (err < 0 && !iwlmvm_mod_params.init_dbg) {
486 IWL_ERR(mvm, "Failed to run INIT ucode: %d\n", err);
487 goto out_free;
488 }
Eytan Lifshitz81a67e32013-09-11 12:39:18 +0200489 }
Johannes Berg8ca151b2013-01-24 14:25:36 +0100490
491 scan_size = sizeof(struct iwl_scan_cmd) +
492 mvm->fw->ucode_capa.max_probe_length +
493 (MAX_NUM_SCAN_CHANNELS * sizeof(struct iwl_scan_channel));
494 mvm->scan_cmd = kmalloc(scan_size, GFP_KERNEL);
495 if (!mvm->scan_cmd)
496 goto out_free;
497
498 err = iwl_mvm_mac_setup_register(mvm);
499 if (err)
500 goto out_free;
501
502 err = iwl_mvm_dbgfs_register(mvm, dbgfs_dir);
503 if (err)
504 goto out_unregister;
505
Matti Gottlieb3848ab62013-07-30 15:29:37 +0300506 memset(&mvm->rx_stats, 0, sizeof(struct mvm_statistics_rx));
507
Eliad Peller7498cf42014-01-16 17:10:44 +0200508 /* rpm starts with a taken ref. only set the appropriate bit here. */
509 set_bit(IWL_MVM_REF_UCODE_DOWN, mvm->ref_bitmap);
510
Johannes Berg8ca151b2013-01-24 14:25:36 +0100511 return op_mode;
512
513 out_unregister:
514 ieee80211_unregister_hw(mvm->hw);
Eliad Peller91b0d112014-01-05 12:41:12 +0200515 iwl_mvm_leds_exit(mvm);
Johannes Berg8ca151b2013-01-24 14:25:36 +0100516 out_free:
517 iwl_phy_db_free(mvm->phy_db);
518 kfree(mvm->scan_cmd);
Eytan Lifshitz81a67e32013-09-11 12:39:18 +0200519 if (!iwlwifi_mod_params.nvm_file)
Arik Nemtsova4082842013-11-24 19:10:46 +0200520 iwl_trans_op_mode_leave(trans);
Johannes Berg8ca151b2013-01-24 14:25:36 +0100521 ieee80211_free_hw(mvm->hw);
522 return NULL;
523}
524
525static void iwl_op_mode_mvm_stop(struct iwl_op_mode *op_mode)
526{
527 struct iwl_mvm *mvm = IWL_OP_MODE_GET_MVM(op_mode);
528 int i;
529
530 iwl_mvm_leds_exit(mvm);
531
Eytan Lifshitz9ee718a2013-05-19 19:14:41 +0300532 iwl_mvm_tt_exit(mvm);
533
Johannes Berg8ca151b2013-01-24 14:25:36 +0100534 ieee80211_unregister_hw(mvm->hw);
535
536 kfree(mvm->scan_cmd);
Eliad Pellere59647e2013-11-28 14:08:50 +0200537 kfree(mvm->mcast_filter_cmd);
538 mvm->mcast_filter_cmd = NULL;
Johannes Berg8ca151b2013-01-24 14:25:36 +0100539
Johannes Bergafc66bb2013-05-03 11:44:16 +0200540#if defined(CONFIG_PM_SLEEP) && defined(CONFIG_IWLWIFI_DEBUGFS)
541 kfree(mvm->d3_resume_sram);
542#endif
543
Arik Nemtsova4082842013-11-24 19:10:46 +0200544 iwl_trans_op_mode_leave(mvm->trans);
Johannes Berg8ca151b2013-01-24 14:25:36 +0100545
546 iwl_phy_db_free(mvm->phy_db);
547 mvm->phy_db = NULL;
548
Johannes Berg8ca151b2013-01-24 14:25:36 +0100549 iwl_free_nvm_data(mvm->nvm_data);
Eran Hararyae2b21b2014-01-09 08:08:24 +0200550 for (i = 0; i < NVM_MAX_NUM_SECTIONS; i++)
Johannes Berg8ca151b2013-01-24 14:25:36 +0100551 kfree(mvm->nvm_sections[i].data);
552
553 ieee80211_free_hw(mvm->hw);
554}
555
556struct iwl_async_handler_entry {
557 struct list_head list;
558 struct iwl_rx_cmd_buffer rxb;
559 int (*fn)(struct iwl_mvm *mvm, struct iwl_rx_cmd_buffer *rxb,
560 struct iwl_device_cmd *cmd);
561};
562
563void iwl_mvm_async_handlers_purge(struct iwl_mvm *mvm)
564{
565 struct iwl_async_handler_entry *entry, *tmp;
566
567 spin_lock_bh(&mvm->async_handlers_lock);
568 list_for_each_entry_safe(entry, tmp, &mvm->async_handlers_list, list) {
569 iwl_free_rxb(&entry->rxb);
570 list_del(&entry->list);
571 kfree(entry);
572 }
573 spin_unlock_bh(&mvm->async_handlers_lock);
574}
575
576static void iwl_mvm_async_handlers_wk(struct work_struct *wk)
577{
578 struct iwl_mvm *mvm =
579 container_of(wk, struct iwl_mvm, async_handlers_wk);
580 struct iwl_async_handler_entry *entry, *tmp;
581 struct list_head local_list;
582
583 INIT_LIST_HEAD(&local_list);
584
585 /* Ensure that we are not in stop flow (check iwl_mvm_mac_stop) */
586 mutex_lock(&mvm->mutex);
587
588 /*
589 * Sync with Rx path with a lock. Remove all the entries from this list,
590 * add them to a local one (lock free), and then handle them.
591 */
592 spin_lock_bh(&mvm->async_handlers_lock);
593 list_splice_init(&mvm->async_handlers_list, &local_list);
594 spin_unlock_bh(&mvm->async_handlers_lock);
595
596 list_for_each_entry_safe(entry, tmp, &local_list, list) {
597 if (entry->fn(mvm, &entry->rxb, NULL))
598 IWL_WARN(mvm,
599 "returned value from ASYNC handlers are ignored\n");
600 iwl_free_rxb(&entry->rxb);
601 list_del(&entry->list);
602 kfree(entry);
603 }
604 mutex_unlock(&mvm->mutex);
605}
606
607static int iwl_mvm_rx_dispatch(struct iwl_op_mode *op_mode,
608 struct iwl_rx_cmd_buffer *rxb,
609 struct iwl_device_cmd *cmd)
610{
611 struct iwl_rx_packet *pkt = rxb_addr(rxb);
612 struct iwl_mvm *mvm = IWL_OP_MODE_GET_MVM(op_mode);
613 u8 i;
614
615 /*
616 * Do the notification wait before RX handlers so
617 * even if the RX handler consumes the RXB we have
618 * access to it in the notification wait entry.
619 */
620 iwl_notification_wait_notify(&mvm->notif_wait, pkt);
621
622 for (i = 0; i < ARRAY_SIZE(iwl_mvm_rx_handlers); i++) {
623 const struct iwl_rx_handlers *rx_h = &iwl_mvm_rx_handlers[i];
Emmanuel Grumbach36eed562013-02-10 13:25:25 +0200624 struct iwl_async_handler_entry *entry;
Johannes Berg8ca151b2013-01-24 14:25:36 +0100625
Emmanuel Grumbach36eed562013-02-10 13:25:25 +0200626 if (rx_h->cmd_id != pkt->hdr.cmd)
627 continue;
Johannes Berg8ca151b2013-01-24 14:25:36 +0100628
Emmanuel Grumbach36eed562013-02-10 13:25:25 +0200629 if (!rx_h->async)
630 return rx_h->fn(mvm, rxb, cmd);
631
632 entry = kzalloc(sizeof(*entry), GFP_ATOMIC);
633 /* we can't do much... */
634 if (!entry)
635 return 0;
636
637 entry->rxb._page = rxb_steal_page(rxb);
638 entry->rxb._offset = rxb->_offset;
639 entry->rxb._rx_page_order = rxb->_rx_page_order;
640 entry->fn = rx_h->fn;
641 spin_lock(&mvm->async_handlers_lock);
642 list_add_tail(&entry->list, &mvm->async_handlers_list);
643 spin_unlock(&mvm->async_handlers_lock);
644 schedule_work(&mvm->async_handlers_wk);
645 break;
Johannes Berg8ca151b2013-01-24 14:25:36 +0100646 }
647
648 return 0;
649}
650
651static void iwl_mvm_stop_sw_queue(struct iwl_op_mode *op_mode, int queue)
652{
653 struct iwl_mvm *mvm = IWL_OP_MODE_GET_MVM(op_mode);
654 int mq = mvm->queue_to_mac80211[queue];
655
656 if (WARN_ON_ONCE(mq == IWL_INVALID_MAC80211_QUEUE))
657 return;
658
659 if (atomic_inc_return(&mvm->queue_stop_count[mq]) > 1) {
660 IWL_DEBUG_TX_QUEUES(mvm,
661 "queue %d (mac80211 %d) already stopped\n",
662 queue, mq);
663 return;
664 }
665
666 set_bit(mq, &mvm->transport_queue_stop);
667 ieee80211_stop_queue(mvm->hw, mq);
668}
669
670static void iwl_mvm_wake_sw_queue(struct iwl_op_mode *op_mode, int queue)
671{
672 struct iwl_mvm *mvm = IWL_OP_MODE_GET_MVM(op_mode);
673 int mq = mvm->queue_to_mac80211[queue];
674
675 if (WARN_ON_ONCE(mq == IWL_INVALID_MAC80211_QUEUE))
676 return;
677
678 if (atomic_dec_return(&mvm->queue_stop_count[mq]) > 0) {
679 IWL_DEBUG_TX_QUEUES(mvm,
680 "queue %d (mac80211 %d) already awake\n",
681 queue, mq);
682 return;
683 }
684
685 clear_bit(mq, &mvm->transport_queue_stop);
686
687 ieee80211_wake_queue(mvm->hw, mq);
688}
689
Eytan Lifshitz9ee718a2013-05-19 19:14:41 +0300690void iwl_mvm_set_hw_ctkill_state(struct iwl_mvm *mvm, bool state)
691{
692 if (state)
693 set_bit(IWL_MVM_STATUS_HW_CTKILL, &mvm->status);
694 else
695 clear_bit(IWL_MVM_STATUS_HW_CTKILL, &mvm->status);
696
697 wiphy_rfkill_set_hw_state(mvm->hw->wiphy, iwl_mvm_is_radio_killed(mvm));
698}
699
Johannes Berg14cfca72014-02-25 20:50:53 +0100700static bool iwl_mvm_set_hw_rfkill_state(struct iwl_op_mode *op_mode, bool state)
Johannes Berg8ca151b2013-01-24 14:25:36 +0100701{
702 struct iwl_mvm *mvm = IWL_OP_MODE_GET_MVM(op_mode);
703
704 if (state)
705 set_bit(IWL_MVM_STATUS_HW_RFKILL, &mvm->status);
706 else
707 clear_bit(IWL_MVM_STATUS_HW_RFKILL, &mvm->status);
708
Eytan Lifshitz9ee718a2013-05-19 19:14:41 +0300709 wiphy_rfkill_set_hw_state(mvm->hw->wiphy, iwl_mvm_is_radio_killed(mvm));
Johannes Berg14cfca72014-02-25 20:50:53 +0100710
711 return state && mvm->cur_ucode != IWL_UCODE_INIT;
Johannes Berg8ca151b2013-01-24 14:25:36 +0100712}
713
714static void iwl_mvm_free_skb(struct iwl_op_mode *op_mode, struct sk_buff *skb)
715{
716 struct iwl_mvm *mvm = IWL_OP_MODE_GET_MVM(op_mode);
717 struct ieee80211_tx_info *info;
718
719 info = IEEE80211_SKB_CB(skb);
720 iwl_trans_free_tx_cmd(mvm->trans, info->driver_data[1]);
721 ieee80211_free_txskb(mvm->hw, skb);
722}
723
Johannes Bergac1ed412013-07-04 15:25:25 +0200724struct iwl_mvm_reprobe {
725 struct device *dev;
726 struct work_struct work;
727};
728
729static void iwl_mvm_reprobe_wk(struct work_struct *wk)
730{
731 struct iwl_mvm_reprobe *reprobe;
732
733 reprobe = container_of(wk, struct iwl_mvm_reprobe, work);
734 if (device_reprobe(reprobe->dev))
735 dev_err(reprobe->dev, "reprobe failed!\n");
736 kfree(reprobe);
737 module_put(THIS_MODULE);
738}
739
Emmanuel Grumbach715c9982013-02-28 08:57:31 +0200740static void iwl_mvm_nic_restart(struct iwl_mvm *mvm)
Johannes Berg8ca151b2013-01-24 14:25:36 +0100741{
Johannes Berg8ca151b2013-01-24 14:25:36 +0100742 iwl_abort_notification_waits(&mvm->notif_wait);
743
744 /*
David Spinadel992f81f2014-01-09 14:22:55 +0200745 * This is a bit racy, but worst case we tell mac80211 about
746 * a stopped/aborted scan when that was already done which
747 * is not a problem. It is necessary to abort any os scan
748 * here because mac80211 requires having the scan cleared
749 * before restarting.
750 * We'll reset the scan_status to NONE in restart cleanup in
751 * the next start() call from mac80211. If restart isn't called
752 * (no fw restart) scan status will stay busy.
753 */
754 switch (mvm->scan_status) {
755 case IWL_MVM_SCAN_NONE:
756 break;
757 case IWL_MVM_SCAN_OS:
758 ieee80211_scan_completed(mvm->hw, true);
759 break;
760 case IWL_MVM_SCAN_SCHED:
761 /* Sched scan will be restarted by mac80211 in restart_hw. */
762 if (!mvm->restart_fw)
763 ieee80211_sched_scan_stopped(mvm->hw);
764 break;
765 }
766
767 /*
Johannes Berg8ca151b2013-01-24 14:25:36 +0100768 * If we're restarting already, don't cycle restarts.
769 * If INIT fw asserted, it will likely fail again.
770 * If WoWLAN fw asserted, don't restart either, mac80211
771 * can't recover this since we're already half suspended.
772 */
773 if (test_and_set_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status)) {
Johannes Bergac1ed412013-07-04 15:25:25 +0200774 struct iwl_mvm_reprobe *reprobe;
775
776 IWL_ERR(mvm,
777 "Firmware error during reconfiguration - reprobe!\n");
778
779 /*
780 * get a module reference to avoid doing this while unloading
781 * anyway and to avoid scheduling a work with code that's
782 * being removed.
783 */
784 if (!try_module_get(THIS_MODULE)) {
785 IWL_ERR(mvm, "Module is being unloaded - abort\n");
786 return;
787 }
788
789 reprobe = kzalloc(sizeof(*reprobe), GFP_ATOMIC);
790 if (!reprobe) {
791 module_put(THIS_MODULE);
792 return;
793 }
794 reprobe->dev = mvm->trans->dev;
795 INIT_WORK(&reprobe->work, iwl_mvm_reprobe_wk);
796 schedule_work(&reprobe->work);
Eran Harary291aa7c2013-07-03 11:00:06 +0300797 } else if (mvm->cur_ucode == IWL_UCODE_REGULAR && mvm->restart_fw) {
Eliad Peller7498cf42014-01-16 17:10:44 +0200798 /* don't let the transport/FW power down */
799 iwl_mvm_ref(mvm, IWL_MVM_REF_UCODE_DOWN);
800
Eran Harary291aa7c2013-07-03 11:00:06 +0300801 if (mvm->restart_fw > 0)
802 mvm->restart_fw--;
Johannes Berg8ca151b2013-01-24 14:25:36 +0100803 ieee80211_restart_hw(mvm->hw);
804 }
805}
806
Emmanuel Grumbach715c9982013-02-28 08:57:31 +0200807static void iwl_mvm_nic_error(struct iwl_op_mode *op_mode)
808{
809 struct iwl_mvm *mvm = IWL_OP_MODE_GET_MVM(op_mode);
810
811 iwl_mvm_dump_nic_error_log(mvm);
Eran Harary291aa7c2013-07-03 11:00:06 +0300812 if (!mvm->restart_fw)
Matti Gottlieb0c393d42013-07-04 14:47:30 +0300813 iwl_mvm_dump_sram(mvm);
Emmanuel Grumbach715c9982013-02-28 08:57:31 +0200814
815 iwl_mvm_nic_restart(mvm);
816}
817
Johannes Berg8ca151b2013-01-24 14:25:36 +0100818static void iwl_mvm_cmd_queue_full(struct iwl_op_mode *op_mode)
819{
Emmanuel Grumbach715c9982013-02-28 08:57:31 +0200820 struct iwl_mvm *mvm = IWL_OP_MODE_GET_MVM(op_mode);
821
Johannes Berg8ca151b2013-01-24 14:25:36 +0100822 WARN_ON(1);
Emmanuel Grumbach715c9982013-02-28 08:57:31 +0200823 iwl_mvm_nic_restart(mvm);
Johannes Berg8ca151b2013-01-24 14:25:36 +0100824}
825
Eliad Peller37577fe2013-12-05 17:19:39 +0200826struct iwl_d0i3_iter_data {
827 struct iwl_mvm *mvm;
828 u8 ap_sta_id;
829 u8 vif_count;
Arik Nemtsovb2492502014-03-13 12:21:50 +0200830 u8 offloading_tid;
831 bool disable_offloading;
Eliad Peller37577fe2013-12-05 17:19:39 +0200832};
833
Arik Nemtsovb2492502014-03-13 12:21:50 +0200834static bool iwl_mvm_disallow_offloading(struct iwl_mvm *mvm,
835 struct ieee80211_vif *vif,
836 struct iwl_d0i3_iter_data *iter_data)
837{
838 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
839 struct ieee80211_sta *ap_sta;
840 struct iwl_mvm_sta *mvmsta;
841 u32 available_tids = 0;
842 u8 tid;
843
844 if (WARN_ON(vif->type != NL80211_IFTYPE_STATION ||
845 mvmvif->ap_sta_id == IWL_MVM_STATION_COUNT))
846 return false;
847
848 ap_sta = rcu_dereference(mvm->fw_id_to_mac_id[mvmvif->ap_sta_id]);
849 if (IS_ERR_OR_NULL(ap_sta))
850 return false;
851
852 mvmsta = iwl_mvm_sta_from_mac80211(ap_sta);
853 spin_lock_bh(&mvmsta->lock);
854 for (tid = 0; tid < IWL_MAX_TID_COUNT; tid++) {
855 struct iwl_mvm_tid_data *tid_data = &mvmsta->tid_data[tid];
856
857 /*
858 * in case of pending tx packets, don't use this tid
859 * for offloading in order to prevent reuse of the same
860 * qos seq counters.
861 */
862 if (iwl_mvm_tid_queued(tid_data))
863 continue;
864
865 if (tid_data->state != IWL_AGG_OFF)
866 continue;
867
868 available_tids |= BIT(tid);
869 }
870 spin_unlock_bh(&mvmsta->lock);
871
872 /*
873 * disallow protocol offloading if we have no available tid
874 * (with no pending frames and no active aggregation,
875 * as we don't handle "holes" properly - the scheduler needs the
876 * frame's seq number and TFD index to match)
877 */
878 if (!available_tids)
879 return true;
880
881 /* for simplicity, just use the first available tid */
882 iter_data->offloading_tid = ffs(available_tids) - 1;
883 return false;
884}
885
Eliad Pellerd6230972013-11-03 20:09:08 +0200886static void iwl_mvm_enter_d0i3_iterator(void *_data, u8 *mac,
887 struct ieee80211_vif *vif)
888{
Eliad Peller37577fe2013-12-05 17:19:39 +0200889 struct iwl_d0i3_iter_data *data = _data;
890 struct iwl_mvm *mvm = data->mvm;
891 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
Eliad Pellerd6230972013-11-03 20:09:08 +0200892 u32 flags = CMD_ASYNC | CMD_HIGH_PRIO | CMD_SEND_IN_IDLE;
893
894 IWL_DEBUG_RPM(mvm, "entering D0i3 - vif %pM\n", vif->addr);
895 if (vif->type != NL80211_IFTYPE_STATION ||
896 !vif->bss_conf.assoc)
897 return;
898
Arik Nemtsovb2492502014-03-13 12:21:50 +0200899 /*
900 * in case of pending tx packets or active aggregations,
901 * avoid offloading features in order to prevent reuse of
902 * the same qos seq counters.
903 */
904 if (iwl_mvm_disallow_offloading(mvm, vif, data))
905 data->disable_offloading = true;
906
Eliad Pellerd6230972013-11-03 20:09:08 +0200907 iwl_mvm_update_d0i3_power_mode(mvm, vif, true, flags);
908
909 /*
910 * on init/association, mvm already configures POWER_TABLE_CMD
911 * and REPLY_MCAST_FILTER_CMD, so currently don't
912 * reconfigure them (we might want to use different
913 * params later on, though).
914 */
Eliad Peller37577fe2013-12-05 17:19:39 +0200915 data->ap_sta_id = mvmvif->ap_sta_id;
916 data->vif_count++;
Eliad Pellerd6230972013-11-03 20:09:08 +0200917}
918
Eliad Peller1a95c8d2013-11-21 19:19:52 +0200919static void iwl_mvm_set_wowlan_data(struct iwl_mvm *mvm,
920 struct iwl_wowlan_config_cmd_v3 *cmd,
921 struct iwl_d0i3_iter_data *iter_data)
922{
923 struct ieee80211_sta *ap_sta;
924 struct iwl_mvm_sta *mvm_ap_sta;
925
926 if (iter_data->ap_sta_id == IWL_MVM_STATION_COUNT)
927 return;
928
929 rcu_read_lock();
930
931 ap_sta = rcu_dereference(mvm->fw_id_to_mac_id[iter_data->ap_sta_id]);
932 if (IS_ERR_OR_NULL(ap_sta))
933 goto out;
934
935 mvm_ap_sta = iwl_mvm_sta_from_mac80211(ap_sta);
936 cmd->common.is_11n_connection = ap_sta->ht_cap.ht_supported;
Arik Nemtsovb2492502014-03-13 12:21:50 +0200937 cmd->offloading_tid = iter_data->offloading_tid;
Eliad Peller1a95c8d2013-11-21 19:19:52 +0200938
939 /*
940 * The d0i3 uCode takes care of the nonqos counters,
941 * so configure only the qos seq ones.
942 */
943 iwl_mvm_set_wowlan_qos_seq(mvm_ap_sta, &cmd->common);
944out:
945 rcu_read_unlock();
946}
Eliad Pellerb3370d42013-11-25 15:20:16 +0200947static int iwl_mvm_enter_d0i3(struct iwl_op_mode *op_mode)
948{
949 struct iwl_mvm *mvm = IWL_OP_MODE_GET_MVM(op_mode);
Arik Nemtsov98ee7782013-10-02 16:58:09 +0300950 u32 flags = CMD_ASYNC | CMD_HIGH_PRIO | CMD_SEND_IN_IDLE;
Eliad Pellerb77f06d2013-11-06 10:49:32 +0200951 int ret;
Eliad Peller37577fe2013-12-05 17:19:39 +0200952 struct iwl_d0i3_iter_data d0i3_iter_data = {
953 .mvm = mvm,
954 };
Eliad Peller1a95c8d2013-11-21 19:19:52 +0200955 struct iwl_wowlan_config_cmd_v3 wowlan_config_cmd = {
956 .common = {
957 .wakeup_filter =
958 cpu_to_le32(IWL_WOWLAN_WAKEUP_RX_FRAME |
959 IWL_WOWLAN_WAKEUP_BEACON_MISS |
960 IWL_WOWLAN_WAKEUP_LINK_CHANGE |
961 IWL_WOWLAN_WAKEUP_BCN_FILTERING),
962 },
Eliad Pellerb77f06d2013-11-06 10:49:32 +0200963 };
Arik Nemtsov98ee7782013-10-02 16:58:09 +0300964 struct iwl_d3_manager_config d3_cfg_cmd = {
965 .min_sleep_time = cpu_to_le32(1000),
966 };
Eliad Pellerb3370d42013-11-25 15:20:16 +0200967
968 IWL_DEBUG_RPM(mvm, "MVM entering D0i3\n");
Arik Nemtsov98ee7782013-10-02 16:58:09 +0300969
Arik Nemtsovb2492502014-03-13 12:21:50 +0200970 /* make sure we have no running tx while configuring the qos */
971 set_bit(IWL_MVM_STATUS_IN_D0I3, &mvm->status);
972 synchronize_net();
973
Eliad Pellerd6230972013-11-03 20:09:08 +0200974 ieee80211_iterate_active_interfaces_atomic(mvm->hw,
975 IEEE80211_IFACE_ITER_NORMAL,
976 iwl_mvm_enter_d0i3_iterator,
Eliad Peller37577fe2013-12-05 17:19:39 +0200977 &d0i3_iter_data);
978 if (d0i3_iter_data.vif_count == 1) {
979 mvm->d0i3_ap_sta_id = d0i3_iter_data.ap_sta_id;
Arik Nemtsovb2492502014-03-13 12:21:50 +0200980 mvm->d0i3_offloading = !d0i3_iter_data.disable_offloading;
Eliad Peller37577fe2013-12-05 17:19:39 +0200981 } else {
982 WARN_ON_ONCE(d0i3_iter_data.vif_count > 1);
983 mvm->d0i3_ap_sta_id = IWL_MVM_STATION_COUNT;
Arik Nemtsovb2492502014-03-13 12:21:50 +0200984 mvm->d0i3_offloading = false;
Eliad Peller37577fe2013-12-05 17:19:39 +0200985 }
Eliad Pellerd6230972013-11-03 20:09:08 +0200986
Eliad Peller1a95c8d2013-11-21 19:19:52 +0200987 iwl_mvm_set_wowlan_data(mvm, &wowlan_config_cmd, &d0i3_iter_data);
Eliad Pellerb77f06d2013-11-06 10:49:32 +0200988 ret = iwl_mvm_send_cmd_pdu(mvm, WOWLAN_CONFIGURATION, flags,
989 sizeof(wowlan_config_cmd),
990 &wowlan_config_cmd);
991 if (ret)
992 return ret;
993
Arik Nemtsov98ee7782013-10-02 16:58:09 +0300994 return iwl_mvm_send_cmd_pdu(mvm, D3_CONFIG_CMD,
995 flags | CMD_MAKE_TRANS_IDLE,
996 sizeof(d3_cfg_cmd), &d3_cfg_cmd);
Eliad Pellerb3370d42013-11-25 15:20:16 +0200997}
998
Eliad Pellerd6230972013-11-03 20:09:08 +0200999static void iwl_mvm_exit_d0i3_iterator(void *_data, u8 *mac,
1000 struct ieee80211_vif *vif)
1001{
1002 struct iwl_mvm *mvm = _data;
1003 u32 flags = CMD_ASYNC | CMD_HIGH_PRIO;
1004
1005 IWL_DEBUG_RPM(mvm, "exiting D0i3 - vif %pM\n", vif->addr);
1006 if (vif->type != NL80211_IFTYPE_STATION ||
1007 !vif->bss_conf.assoc)
1008 return;
1009
1010 iwl_mvm_update_d0i3_power_mode(mvm, vif, false, flags);
1011}
1012
Eliad Peller37577fe2013-12-05 17:19:39 +02001013static void iwl_mvm_d0i3_disconnect_iter(void *data, u8 *mac,
1014 struct ieee80211_vif *vif)
1015{
1016 struct iwl_mvm *mvm = data;
1017 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
1018
1019 if (vif->type == NL80211_IFTYPE_STATION && vif->bss_conf.assoc &&
1020 mvm->d0i3_ap_sta_id == mvmvif->ap_sta_id)
1021 ieee80211_connection_loss(vif);
1022}
1023
Arik Nemtsovb2492502014-03-13 12:21:50 +02001024void iwl_mvm_d0i3_enable_tx(struct iwl_mvm *mvm, __le16 *qos_seq)
1025{
1026 struct ieee80211_sta *sta = NULL;
1027 struct iwl_mvm_sta *mvm_ap_sta;
1028 int i;
1029 bool wake_queues = false;
1030
1031 lockdep_assert_held(&mvm->mutex);
1032
1033 spin_lock_bh(&mvm->d0i3_tx_lock);
1034
1035 if (mvm->d0i3_ap_sta_id == IWL_MVM_STATION_COUNT)
1036 goto out;
1037
1038 IWL_DEBUG_RPM(mvm, "re-enqueue packets\n");
1039
1040 /* get the sta in order to update seq numbers and re-enqueue skbs */
1041 sta = rcu_dereference_protected(
1042 mvm->fw_id_to_mac_id[mvm->d0i3_ap_sta_id],
1043 lockdep_is_held(&mvm->mutex));
1044
1045 if (IS_ERR_OR_NULL(sta)) {
1046 sta = NULL;
1047 goto out;
1048 }
1049
1050 if (mvm->d0i3_offloading && qos_seq) {
1051 /* update qos seq numbers if offloading was enabled */
1052 mvm_ap_sta = (struct iwl_mvm_sta *)sta->drv_priv;
1053 for (i = 0; i < IWL_MAX_TID_COUNT; i++) {
1054 u16 seq = le16_to_cpu(qos_seq[i]);
1055 /* firmware stores last-used one, we store next one */
1056 seq += 0x10;
1057 mvm_ap_sta->tid_data[i].seq_number = seq;
1058 }
1059 }
1060out:
1061 /* re-enqueue (or drop) all packets */
1062 while (!skb_queue_empty(&mvm->d0i3_tx)) {
1063 struct sk_buff *skb = __skb_dequeue(&mvm->d0i3_tx);
1064
1065 if (!sta || iwl_mvm_tx_skb(mvm, skb, sta))
1066 ieee80211_free_txskb(mvm->hw, skb);
1067
1068 /* if the skb_queue is not empty, we need to wake queues */
1069 wake_queues = true;
1070 }
1071 clear_bit(IWL_MVM_STATUS_IN_D0I3, &mvm->status);
1072 wake_up(&mvm->d0i3_exit_waitq);
1073 mvm->d0i3_ap_sta_id = IWL_MVM_STATION_COUNT;
1074 if (wake_queues)
1075 ieee80211_wake_queues(mvm->hw);
1076
1077 spin_unlock_bh(&mvm->d0i3_tx_lock);
1078}
1079
Eliad Peller37577fe2013-12-05 17:19:39 +02001080static void iwl_mvm_d0i3_exit_work(struct work_struct *wk)
1081{
1082 struct iwl_mvm *mvm = container_of(wk, struct iwl_mvm, d0i3_exit_work);
1083 struct iwl_host_cmd get_status_cmd = {
1084 .id = WOWLAN_GET_STATUSES,
1085 .flags = CMD_SYNC | CMD_HIGH_PRIO | CMD_WANT_SKB,
1086 };
1087 struct iwl_wowlan_status_v6 *status;
1088 int ret;
1089 u32 disconnection_reasons, wakeup_reasons;
Arik Nemtsovb2492502014-03-13 12:21:50 +02001090 __le16 *qos_seq = NULL;
Eliad Peller37577fe2013-12-05 17:19:39 +02001091
1092 mutex_lock(&mvm->mutex);
1093 ret = iwl_mvm_send_cmd(mvm, &get_status_cmd);
1094 if (ret)
1095 goto out;
1096
1097 if (!get_status_cmd.resp_pkt)
1098 goto out;
1099
1100 status = (void *)get_status_cmd.resp_pkt->data;
1101 wakeup_reasons = le32_to_cpu(status->wakeup_reasons);
Arik Nemtsovb2492502014-03-13 12:21:50 +02001102 qos_seq = status->qos_seq_ctr;
Eliad Peller37577fe2013-12-05 17:19:39 +02001103
1104 IWL_DEBUG_RPM(mvm, "wakeup reasons: 0x%x\n", wakeup_reasons);
1105
1106 disconnection_reasons =
1107 IWL_WOWLAN_WAKEUP_BY_DISCONNECTION_ON_MISSED_BEACON |
1108 IWL_WOWLAN_WAKEUP_BY_DISCONNECTION_ON_DEAUTH;
1109 if (wakeup_reasons & disconnection_reasons)
1110 ieee80211_iterate_active_interfaces(
1111 mvm->hw, IEEE80211_IFACE_ITER_NORMAL,
1112 iwl_mvm_d0i3_disconnect_iter, mvm);
1113
1114 iwl_free_resp(&get_status_cmd);
1115out:
Arik Nemtsovb2492502014-03-13 12:21:50 +02001116 iwl_mvm_d0i3_enable_tx(mvm, qos_seq);
Eliad Peller37577fe2013-12-05 17:19:39 +02001117 mutex_unlock(&mvm->mutex);
1118}
1119
Eliad Pellerb3370d42013-11-25 15:20:16 +02001120static int iwl_mvm_exit_d0i3(struct iwl_op_mode *op_mode)
1121{
1122 struct iwl_mvm *mvm = IWL_OP_MODE_GET_MVM(op_mode);
Arik Nemtsov98ee7782013-10-02 16:58:09 +03001123 u32 flags = CMD_ASYNC | CMD_HIGH_PRIO | CMD_SEND_IN_IDLE |
1124 CMD_WAKE_UP_TRANS;
Eliad Pellerd6230972013-11-03 20:09:08 +02001125 int ret;
Eliad Pellerb3370d42013-11-25 15:20:16 +02001126
1127 IWL_DEBUG_RPM(mvm, "MVM exiting D0i3\n");
Arik Nemtsov98ee7782013-10-02 16:58:09 +03001128
Eliad Pellerd6230972013-11-03 20:09:08 +02001129 ret = iwl_mvm_send_cmd_pdu(mvm, D0I3_END_CMD, flags, 0, NULL);
1130 if (ret)
Eliad Peller37577fe2013-12-05 17:19:39 +02001131 goto out;
Eliad Pellerd6230972013-11-03 20:09:08 +02001132
1133 ieee80211_iterate_active_interfaces_atomic(mvm->hw,
1134 IEEE80211_IFACE_ITER_NORMAL,
1135 iwl_mvm_exit_d0i3_iterator,
1136 mvm);
Eliad Peller37577fe2013-12-05 17:19:39 +02001137out:
1138 schedule_work(&mvm->d0i3_exit_work);
1139 return ret;
Eliad Pellerb3370d42013-11-25 15:20:16 +02001140}
1141
Johannes Berg8ca151b2013-01-24 14:25:36 +01001142static const struct iwl_op_mode_ops iwl_mvm_ops = {
1143 .start = iwl_op_mode_mvm_start,
1144 .stop = iwl_op_mode_mvm_stop,
1145 .rx = iwl_mvm_rx_dispatch,
1146 .queue_full = iwl_mvm_stop_sw_queue,
1147 .queue_not_full = iwl_mvm_wake_sw_queue,
1148 .hw_rf_kill = iwl_mvm_set_hw_rfkill_state,
1149 .free_skb = iwl_mvm_free_skb,
1150 .nic_error = iwl_mvm_nic_error,
1151 .cmd_queue_full = iwl_mvm_cmd_queue_full,
1152 .nic_config = iwl_mvm_nic_config,
Eliad Pellerb3370d42013-11-25 15:20:16 +02001153 .enter_d0i3 = iwl_mvm_enter_d0i3,
1154 .exit_d0i3 = iwl_mvm_exit_d0i3,
Johannes Berg8ca151b2013-01-24 14:25:36 +01001155};