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8ca151b5 JB |
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 | * | |
51368bf7 | 8 | * Copyright(c) 2012 - 2014 Intel Corporation. All rights reserved. |
8ca151b5 JB |
9 | * |
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 | |
410dc5aa | 25 | * in the file called COPYING. |
8ca151b5 JB |
26 | * |
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 | * | |
51368bf7 | 33 | * Copyright(c) 2012 - 2014 Intel Corporation. All rights reserved. |
8ca151b5 JB |
34 | * All rights reserved. |
35 | * | |
36 | * Redistribution and use in source and binary forms, with or without | |
37 | * modification, are permitted provided that the following conditions | |
38 | * are met: | |
39 | * | |
40 | * * Redistributions of source code must retain the above copyright | |
41 | * notice, this list of conditions and the following disclaimer. | |
42 | * * Redistributions in binary form must reproduce the above copyright | |
43 | * notice, this list of conditions and the following disclaimer in | |
44 | * the documentation and/or other materials provided with the | |
45 | * distribution. | |
46 | * * Neither the name Intel Corporation nor the names of its | |
47 | * contributors may be used to endorse or promote products derived | |
48 | * from this software without specific prior written permission. | |
49 | * | |
50 | * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS | |
51 | * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT | |
52 | * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR | |
53 | * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT | |
54 | * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, | |
55 | * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT | |
56 | * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, | |
57 | * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY | |
58 | * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT | |
59 | * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE | |
60 | * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. | |
61 | * | |
62 | *****************************************************************************/ | |
63 | #include <linux/module.h> | |
1bd3cbc1 | 64 | #include <linux/vmalloc.h> |
8ca151b5 JB |
65 | #include <net/mac80211.h> |
66 | ||
67 | #include "iwl-notif-wait.h" | |
68 | #include "iwl-trans.h" | |
69 | #include "iwl-op-mode.h" | |
70 | #include "iwl-fw.h" | |
71 | #include "iwl-debug.h" | |
72 | #include "iwl-drv.h" | |
73 | #include "iwl-modparams.h" | |
74 | #include "mvm.h" | |
75 | #include "iwl-phy-db.h" | |
76 | #include "iwl-eeprom-parse.h" | |
77 | #include "iwl-csr.h" | |
78 | #include "iwl-io.h" | |
79 | #include "iwl-prph.h" | |
80 | #include "rs.h" | |
81 | #include "fw-api-scan.h" | |
82 | #include "time-event.h" | |
4d075007 | 83 | #include "iwl-fw-error-dump.h" |
8ca151b5 JB |
84 | |
85 | /* | |
86 | * module name, copyright, version, etc. | |
87 | */ | |
88 | #define DRV_DESCRIPTION "The new Intel(R) wireless AGN driver for Linux" | |
89 | ||
90 | #define DRV_VERSION IWLWIFI_VERSION | |
91 | ||
92 | MODULE_DESCRIPTION(DRV_DESCRIPTION); | |
93 | MODULE_VERSION(DRV_VERSION); | |
94 | MODULE_AUTHOR(DRV_COPYRIGHT " " DRV_AUTHOR); | |
95 | MODULE_LICENSE("GPL"); | |
96 | ||
97 | static const struct iwl_op_mode_ops iwl_mvm_ops; | |
98 | ||
99 | struct iwl_mvm_mod_params iwlmvm_mod_params = { | |
100 | .power_scheme = IWL_POWER_SCHEME_BPS, | |
101 | /* rest of fields are 0 by default */ | |
102 | }; | |
103 | ||
104 | module_param_named(init_dbg, iwlmvm_mod_params.init_dbg, bool, S_IRUGO); | |
105 | MODULE_PARM_DESC(init_dbg, | |
106 | "set to true to debug an ASSERT in INIT fw (default: false"); | |
107 | module_param_named(power_scheme, iwlmvm_mod_params.power_scheme, int, S_IRUGO); | |
108 | MODULE_PARM_DESC(power_scheme, | |
109 | "power management scheme: 1-active, 2-balanced, 3-low power, default: 2"); | |
110 | ||
111 | /* | |
112 | * module init and exit functions | |
113 | */ | |
114 | static int __init iwl_mvm_init(void) | |
115 | { | |
116 | int ret; | |
117 | ||
118 | ret = iwl_mvm_rate_control_register(); | |
119 | if (ret) { | |
120 | pr_err("Unable to register rate control algorithm: %d\n", ret); | |
121 | return ret; | |
122 | } | |
123 | ||
124 | ret = iwl_opmode_register("iwlmvm", &iwl_mvm_ops); | |
125 | ||
126 | if (ret) { | |
127 | pr_err("Unable to register MVM op_mode: %d\n", ret); | |
128 | iwl_mvm_rate_control_unregister(); | |
129 | } | |
130 | ||
131 | return ret; | |
132 | } | |
133 | module_init(iwl_mvm_init); | |
134 | ||
135 | static void __exit iwl_mvm_exit(void) | |
136 | { | |
137 | iwl_opmode_deregister("iwlmvm"); | |
138 | iwl_mvm_rate_control_unregister(); | |
139 | } | |
140 | module_exit(iwl_mvm_exit); | |
141 | ||
142 | static void iwl_mvm_nic_config(struct iwl_op_mode *op_mode) | |
143 | { | |
144 | struct iwl_mvm *mvm = IWL_OP_MODE_GET_MVM(op_mode); | |
145 | u8 radio_cfg_type, radio_cfg_step, radio_cfg_dash; | |
146 | u32 reg_val = 0; | |
147 | ||
d110cb51 EG |
148 | radio_cfg_type = (mvm->fw->phy_config & FW_PHY_CFG_RADIO_TYPE) >> |
149 | FW_PHY_CFG_RADIO_TYPE_POS; | |
150 | radio_cfg_step = (mvm->fw->phy_config & FW_PHY_CFG_RADIO_STEP) >> | |
151 | FW_PHY_CFG_RADIO_STEP_POS; | |
152 | radio_cfg_dash = (mvm->fw->phy_config & FW_PHY_CFG_RADIO_DASH) >> | |
153 | FW_PHY_CFG_RADIO_DASH_POS; | |
8ca151b5 JB |
154 | |
155 | /* SKU control */ | |
156 | reg_val |= CSR_HW_REV_STEP(mvm->trans->hw_rev) << | |
157 | CSR_HW_IF_CONFIG_REG_POS_MAC_STEP; | |
158 | reg_val |= CSR_HW_REV_DASH(mvm->trans->hw_rev) << | |
159 | CSR_HW_IF_CONFIG_REG_POS_MAC_DASH; | |
160 | ||
161 | /* radio configuration */ | |
162 | reg_val |= radio_cfg_type << CSR_HW_IF_CONFIG_REG_POS_PHY_TYPE; | |
163 | reg_val |= radio_cfg_step << CSR_HW_IF_CONFIG_REG_POS_PHY_STEP; | |
164 | reg_val |= radio_cfg_dash << CSR_HW_IF_CONFIG_REG_POS_PHY_DASH; | |
165 | ||
166 | WARN_ON((radio_cfg_type << CSR_HW_IF_CONFIG_REG_POS_PHY_TYPE) & | |
167 | ~CSR_HW_IF_CONFIG_REG_MSK_PHY_TYPE); | |
168 | ||
169 | /* silicon bits */ | |
170 | reg_val |= CSR_HW_IF_CONFIG_REG_BIT_RADIO_SI; | |
8ca151b5 | 171 | |
e139dc4a LE |
172 | iwl_trans_set_bits_mask(mvm->trans, CSR_HW_IF_CONFIG_REG, |
173 | CSR_HW_IF_CONFIG_REG_MSK_MAC_DASH | | |
174 | CSR_HW_IF_CONFIG_REG_MSK_MAC_STEP | | |
175 | CSR_HW_IF_CONFIG_REG_MSK_PHY_TYPE | | |
176 | CSR_HW_IF_CONFIG_REG_MSK_PHY_STEP | | |
177 | CSR_HW_IF_CONFIG_REG_MSK_PHY_DASH | | |
178 | CSR_HW_IF_CONFIG_REG_BIT_RADIO_SI | | |
179 | CSR_HW_IF_CONFIG_REG_BIT_MAC_SI, | |
180 | reg_val); | |
8ca151b5 JB |
181 | |
182 | IWL_DEBUG_INFO(mvm, "Radio type=0x%x-0x%x-0x%x\n", radio_cfg_type, | |
183 | radio_cfg_step, radio_cfg_dash); | |
184 | ||
185 | /* | |
186 | * W/A : NIC is stuck in a reset state after Early PCIe power off | |
187 | * (PCIe power is lost before PERST# is asserted), causing ME FW | |
188 | * to lose ownership and not being able to obtain it back. | |
189 | */ | |
3073d8c0 EH |
190 | if (mvm->trans->cfg->device_family != IWL_DEVICE_FAMILY_8000) |
191 | iwl_set_bits_mask_prph(mvm->trans, APMG_PS_CTRL_REG, | |
192 | APMG_PS_CTRL_EARLY_PWR_OFF_RESET_DIS, | |
193 | ~APMG_PS_CTRL_EARLY_PWR_OFF_RESET_DIS); | |
8ca151b5 JB |
194 | } |
195 | ||
196 | struct iwl_rx_handlers { | |
197 | u8 cmd_id; | |
198 | bool async; | |
199 | int (*fn)(struct iwl_mvm *mvm, struct iwl_rx_cmd_buffer *rxb, | |
200 | struct iwl_device_cmd *cmd); | |
201 | }; | |
202 | ||
203 | #define RX_HANDLER(_cmd_id, _fn, _async) \ | |
204 | { .cmd_id = _cmd_id , .fn = _fn , .async = _async } | |
205 | ||
206 | /* | |
207 | * Handlers for fw notifications | |
208 | * Convention: RX_HANDLER(CMD_NAME, iwl_mvm_rx_CMD_NAME | |
209 | * This list should be in order of frequency for performance purposes. | |
210 | * | |
211 | * The handler can be SYNC - this means that it will be called in the Rx path | |
212 | * which can't acquire mvm->mutex. If the handler needs to hold mvm->mutex (and | |
213 | * only in this case!), it should be set as ASYNC. In that case, it will be | |
214 | * called from a worker with mvm->mutex held. | |
215 | */ | |
216 | static const struct iwl_rx_handlers iwl_mvm_rx_handlers[] = { | |
217 | RX_HANDLER(REPLY_RX_MPDU_CMD, iwl_mvm_rx_rx_mpdu, false), | |
218 | RX_HANDLER(REPLY_RX_PHY_CMD, iwl_mvm_rx_rx_phy_cmd, false), | |
219 | RX_HANDLER(TX_CMD, iwl_mvm_rx_tx_cmd, false), | |
220 | RX_HANDLER(BA_NOTIF, iwl_mvm_rx_ba_notif, false), | |
8ca151b5 | 221 | |
f421f9c3 | 222 | RX_HANDLER(BT_PROFILE_NOTIFICATION, iwl_mvm_rx_bt_coex_notif, true), |
bd3398e2 | 223 | RX_HANDLER(BEACON_NOTIFICATION, iwl_mvm_rx_beacon_notif, true), |
9ee718aa | 224 | RX_HANDLER(STATISTICS_NOTIFICATION, iwl_mvm_rx_statistics, true), |
b9fae2d5 EG |
225 | RX_HANDLER(ANTENNA_COUPLING_NOTIFICATION, |
226 | iwl_mvm_rx_ant_coupling_notif, true), | |
f421f9c3 | 227 | |
497b49d2 EG |
228 | RX_HANDLER(TIME_EVENT_NOTIFICATION, iwl_mvm_rx_time_event_notif, false), |
229 | ||
3e56eadf JB |
230 | RX_HANDLER(EOSP_NOTIFICATION, iwl_mvm_rx_eosp_notif, false), |
231 | ||
497b49d2 | 232 | RX_HANDLER(SCAN_REQUEST_CMD, iwl_mvm_rx_scan_response, false), |
91b80256 | 233 | RX_HANDLER(SCAN_COMPLETE_NOTIFICATION, iwl_mvm_rx_scan_complete, true), |
35a000b7 | 234 | RX_HANDLER(SCAN_OFFLOAD_COMPLETE, |
a6623e84 | 235 | iwl_mvm_rx_scan_offload_complete_notif, true), |
fb98be5e | 236 | RX_HANDLER(MATCH_FOUND_NOTIFICATION, iwl_mvm_rx_scan_offload_results, |
35a000b7 | 237 | false), |
497b49d2 | 238 | |
8ca151b5 JB |
239 | RX_HANDLER(RADIO_VERSION_NOTIFICATION, iwl_mvm_rx_radio_ver, false), |
240 | RX_HANDLER(CARD_STATE_NOTIFICATION, iwl_mvm_rx_card_state_notif, false), | |
241 | ||
d64048ed HG |
242 | RX_HANDLER(MISSED_BEACONS_NOTIFICATION, iwl_mvm_rx_missed_beacons_notif, |
243 | false), | |
244 | ||
8ca151b5 | 245 | RX_HANDLER(REPLY_ERROR, iwl_mvm_rx_fw_error, false), |
175a70b7 AB |
246 | RX_HANDLER(PSM_UAPSD_AP_MISBEHAVING_NOTIFICATION, |
247 | iwl_mvm_power_uapsd_misbehaving_ap_notif, false), | |
8ca151b5 JB |
248 | }; |
249 | #undef RX_HANDLER | |
250 | #define CMD(x) [x] = #x | |
251 | ||
e5209263 | 252 | static const char *const iwl_mvm_cmd_strings[REPLY_MAX] = { |
8ca151b5 JB |
253 | CMD(MVM_ALIVE), |
254 | CMD(REPLY_ERROR), | |
255 | CMD(INIT_COMPLETE_NOTIF), | |
256 | CMD(PHY_CONTEXT_CMD), | |
257 | CMD(MGMT_MCAST_KEY), | |
258 | CMD(TX_CMD), | |
259 | CMD(TXPATH_FLUSH), | |
260 | CMD(MAC_CONTEXT_CMD), | |
261 | CMD(TIME_EVENT_CMD), | |
262 | CMD(TIME_EVENT_NOTIFICATION), | |
263 | CMD(BINDING_CONTEXT_CMD), | |
264 | CMD(TIME_QUOTA_CMD), | |
4ac6cb59 | 265 | CMD(NON_QOS_TX_COUNTER_CMD), |
8ca151b5 JB |
266 | CMD(RADIO_VERSION_NOTIFICATION), |
267 | CMD(SCAN_REQUEST_CMD), | |
268 | CMD(SCAN_ABORT_CMD), | |
269 | CMD(SCAN_START_NOTIFICATION), | |
270 | CMD(SCAN_RESULTS_NOTIFICATION), | |
271 | CMD(SCAN_COMPLETE_NOTIFICATION), | |
272 | CMD(NVM_ACCESS_CMD), | |
273 | CMD(PHY_CONFIGURATION_CMD), | |
274 | CMD(CALIB_RES_NOTIF_PHY_DB), | |
275 | CMD(SET_CALIB_DEFAULT_CMD), | |
276 | CMD(CALIBRATION_COMPLETE_NOTIFICATION), | |
5a258aae | 277 | CMD(ADD_STA_KEY), |
8ca151b5 JB |
278 | CMD(ADD_STA), |
279 | CMD(REMOVE_STA), | |
280 | CMD(LQ_CMD), | |
281 | CMD(SCAN_OFFLOAD_CONFIG_CMD), | |
35a000b7 | 282 | CMD(MATCH_FOUND_NOTIFICATION), |
8ca151b5 JB |
283 | CMD(SCAN_OFFLOAD_REQUEST_CMD), |
284 | CMD(SCAN_OFFLOAD_ABORT_CMD), | |
285 | CMD(SCAN_OFFLOAD_COMPLETE), | |
286 | CMD(SCAN_OFFLOAD_UPDATE_PROFILES_CMD), | |
fb98be5e | 287 | CMD(SCAN_ITERATION_COMPLETE), |
8ca151b5 JB |
288 | CMD(POWER_TABLE_CMD), |
289 | CMD(WEP_KEY), | |
290 | CMD(REPLY_RX_PHY_CMD), | |
291 | CMD(REPLY_RX_MPDU_CMD), | |
571765c8 | 292 | CMD(BEACON_NOTIFICATION), |
8ca151b5 JB |
293 | CMD(BEACON_TEMPLATE_CMD), |
294 | CMD(STATISTICS_NOTIFICATION), | |
3e56eadf | 295 | CMD(EOSP_NOTIFICATION), |
88f2fd73 | 296 | CMD(REDUCE_TX_POWER_CMD), |
8ca151b5 JB |
297 | CMD(TX_ANT_CONFIGURATION_CMD), |
298 | CMD(D3_CONFIG_CMD), | |
98ee7783 | 299 | CMD(D0I3_END_CMD), |
8ca151b5 JB |
300 | CMD(PROT_OFFLOAD_CONFIG_CMD), |
301 | CMD(OFFLOADS_QUERY_CMD), | |
302 | CMD(REMOTE_WAKE_CONFIG_CMD), | |
303 | CMD(WOWLAN_PATTERNS), | |
304 | CMD(WOWLAN_CONFIGURATION), | |
305 | CMD(WOWLAN_TSC_RSC_PARAM), | |
306 | CMD(WOWLAN_TKIP_PARAM), | |
307 | CMD(WOWLAN_KEK_KCK_MATERIAL), | |
308 | CMD(WOWLAN_GET_STATUSES), | |
309 | CMD(WOWLAN_TX_POWER_PER_DB), | |
310 | CMD(NET_DETECT_CONFIG_CMD), | |
311 | CMD(NET_DETECT_PROFILES_QUERY_CMD), | |
312 | CMD(NET_DETECT_PROFILES_CMD), | |
313 | CMD(NET_DETECT_HOTSPOTS_CMD), | |
314 | CMD(NET_DETECT_HOTSPOTS_QUERY_CMD), | |
3b4612fb | 315 | CMD(CARD_STATE_NOTIFICATION), |
d64048ed | 316 | CMD(MISSED_BEACONS_NOTIFICATION), |
fb3ceb81 EG |
317 | CMD(BT_COEX_PRIO_TABLE), |
318 | CMD(BT_COEX_PROT_ENV), | |
319 | CMD(BT_PROFILE_NOTIFICATION), | |
320 | CMD(BT_CONFIG), | |
51b6b9e0 | 321 | CMD(MCAST_FILTER_CMD), |
c87163b9 | 322 | CMD(BCAST_FILTER_CMD), |
7a06a38a | 323 | CMD(REPLY_SF_CFG_CMD), |
7df15b1e | 324 | CMD(REPLY_BEACON_FILTERING_CMD), |
9ee718aa | 325 | CMD(REPLY_THERMAL_MNG_BACKOFF), |
e811ada7 | 326 | CMD(MAC_PM_POWER_TABLE), |
dac94da8 | 327 | CMD(BT_COEX_CI), |
430a3bba EG |
328 | CMD(BT_COEX_UPDATE_SW_BOOST), |
329 | CMD(BT_COEX_UPDATE_CORUN_LUT), | |
330 | CMD(BT_COEX_UPDATE_REDUCED_TXP), | |
175a70b7 | 331 | CMD(PSM_UAPSD_AP_MISBEHAVING_NOTIFICATION), |
b9fae2d5 | 332 | CMD(ANTENNA_COUPLING_NOTIFICATION), |
8ca151b5 JB |
333 | }; |
334 | #undef CMD | |
335 | ||
336 | /* this forward declaration can avoid to export the function */ | |
337 | static void iwl_mvm_async_handlers_wk(struct work_struct *wk); | |
37577fe2 | 338 | static void iwl_mvm_d0i3_exit_work(struct work_struct *wk); |
8ca151b5 | 339 | |
0c0e2c71 IY |
340 | static u32 calc_min_backoff(struct iwl_trans *trans, const struct iwl_cfg *cfg) |
341 | { | |
342 | const struct iwl_pwr_tx_backoff *pwr_tx_backoff = cfg->pwr_tx_backoffs; | |
343 | ||
344 | if (!pwr_tx_backoff) | |
345 | return 0; | |
346 | ||
347 | while (pwr_tx_backoff->pwr) { | |
348 | if (trans->dflt_pwr_limit >= pwr_tx_backoff->pwr) | |
349 | return pwr_tx_backoff->backoff; | |
350 | ||
351 | pwr_tx_backoff++; | |
352 | } | |
353 | ||
354 | return 0; | |
355 | } | |
356 | ||
8ca151b5 JB |
357 | static struct iwl_op_mode * |
358 | iwl_op_mode_mvm_start(struct iwl_trans *trans, const struct iwl_cfg *cfg, | |
359 | const struct iwl_fw *fw, struct dentry *dbgfs_dir) | |
360 | { | |
361 | struct ieee80211_hw *hw; | |
362 | struct iwl_op_mode *op_mode; | |
363 | struct iwl_mvm *mvm; | |
364 | struct iwl_trans_config trans_cfg = {}; | |
365 | static const u8 no_reclaim_cmds[] = { | |
366 | TX_CMD, | |
367 | }; | |
368 | int err, scan_size; | |
0c0e2c71 | 369 | u32 min_backoff; |
8ca151b5 | 370 | |
c4d83271 EG |
371 | /* |
372 | * We use IWL_MVM_STATION_COUNT to check the validity of the station | |
373 | * index all over the driver - check that its value corresponds to the | |
374 | * array size. | |
375 | */ | |
376 | BUILD_BUG_ON(ARRAY_SIZE(mvm->fw_id_to_mac_id) != IWL_MVM_STATION_COUNT); | |
377 | ||
8ca151b5 JB |
378 | /******************************** |
379 | * 1. Allocating and configuring HW data | |
380 | ********************************/ | |
381 | hw = ieee80211_alloc_hw(sizeof(struct iwl_op_mode) + | |
382 | sizeof(struct iwl_mvm), | |
383 | &iwl_mvm_hw_ops); | |
384 | if (!hw) | |
385 | return NULL; | |
386 | ||
387 | op_mode = hw->priv; | |
388 | op_mode->ops = &iwl_mvm_ops; | |
8ca151b5 JB |
389 | |
390 | mvm = IWL_OP_MODE_GET_MVM(op_mode); | |
391 | mvm->dev = trans->dev; | |
392 | mvm->trans = trans; | |
393 | mvm->cfg = cfg; | |
394 | mvm->fw = fw; | |
395 | mvm->hw = hw; | |
396 | ||
291aa7c4 EH |
397 | mvm->restart_fw = iwlwifi_mod_params.restart_fw ? -1 : 0; |
398 | ||
19e737c9 EL |
399 | mvm->aux_queue = 15; |
400 | mvm->first_agg_queue = 16; | |
401 | mvm->last_agg_queue = mvm->cfg->base_params->num_of_queues - 1; | |
402 | if (mvm->cfg->base_params->num_of_queues == 16) { | |
403 | mvm->aux_queue = 11; | |
404 | mvm->first_agg_queue = 12; | |
405 | } | |
1f3b0ff8 | 406 | mvm->sf_state = SF_UNINIT; |
19e737c9 | 407 | |
8ca151b5 | 408 | mutex_init(&mvm->mutex); |
d15a747f | 409 | mutex_init(&mvm->d0i3_suspend_mutex); |
8ca151b5 JB |
410 | spin_lock_init(&mvm->async_handlers_lock); |
411 | INIT_LIST_HEAD(&mvm->time_event_list); | |
412 | INIT_LIST_HEAD(&mvm->async_handlers_list); | |
413 | spin_lock_init(&mvm->time_event_lock); | |
414 | ||
415 | INIT_WORK(&mvm->async_handlers_wk, iwl_mvm_async_handlers_wk); | |
416 | INIT_WORK(&mvm->roc_done_wk, iwl_mvm_roc_done_wk); | |
417 | INIT_WORK(&mvm->sta_drained_wk, iwl_mvm_sta_drained_wk); | |
37577fe2 | 418 | INIT_WORK(&mvm->d0i3_exit_work, iwl_mvm_d0i3_exit_work); |
8ca151b5 | 419 | |
b2492501 AN |
420 | spin_lock_init(&mvm->d0i3_tx_lock); |
421 | skb_queue_head_init(&mvm->d0i3_tx); | |
422 | init_waitqueue_head(&mvm->d0i3_exit_waitq); | |
423 | ||
8ca151b5 JB |
424 | SET_IEEE80211_DEV(mvm->hw, mvm->trans->dev); |
425 | ||
426 | /* | |
427 | * Populate the state variables that the transport layer needs | |
428 | * to know about. | |
429 | */ | |
430 | trans_cfg.op_mode = op_mode; | |
431 | trans_cfg.no_reclaim_cmds = no_reclaim_cmds; | |
432 | trans_cfg.n_no_reclaim_cmds = ARRAY_SIZE(no_reclaim_cmds); | |
433 | trans_cfg.rx_buf_size_8k = iwlwifi_mod_params.amsdu_size_8K; | |
434 | ||
25b9ea5c | 435 | if (mvm->fw->ucode_capa.flags & IWL_UCODE_TLV_FLAGS_DW_BC_TABLE) |
8ca151b5 JB |
436 | trans_cfg.bc_table_dword = true; |
437 | ||
438 | if (!iwlwifi_mod_params.wd_disable) | |
439 | trans_cfg.queue_watchdog_timeout = cfg->base_params->wd_timeout; | |
440 | else | |
441 | trans_cfg.queue_watchdog_timeout = IWL_WATCHDOG_DISABLED; | |
442 | ||
443 | trans_cfg.command_names = iwl_mvm_cmd_strings; | |
444 | ||
445 | trans_cfg.cmd_queue = IWL_MVM_CMD_QUEUE; | |
446 | trans_cfg.cmd_fifo = IWL_MVM_CMD_FIFO; | |
447 | ||
448 | snprintf(mvm->hw->wiphy->fw_version, | |
449 | sizeof(mvm->hw->wiphy->fw_version), | |
450 | "%s", fw->fw_version); | |
451 | ||
452 | /* Configure transport layer */ | |
453 | iwl_trans_configure(mvm->trans, &trans_cfg); | |
454 | ||
455 | trans->rx_mpdu_cmd = REPLY_RX_MPDU_CMD; | |
456 | trans->rx_mpdu_cmd_hdr_size = sizeof(struct iwl_rx_mpdu_res_start); | |
457 | ||
458 | /* set up notification wait support */ | |
459 | iwl_notification_wait_init(&mvm->notif_wait); | |
460 | ||
461 | /* Init phy db */ | |
462 | mvm->phy_db = iwl_phy_db_init(trans); | |
463 | if (!mvm->phy_db) { | |
464 | IWL_ERR(mvm, "Cannot init phy_db\n"); | |
465 | goto out_free; | |
466 | } | |
467 | ||
468 | IWL_INFO(mvm, "Detected %s, REV=0x%X\n", | |
469 | mvm->cfg->name, mvm->trans->hw_rev); | |
470 | ||
0c0e2c71 IY |
471 | min_backoff = calc_min_backoff(trans, cfg); |
472 | iwl_mvm_tt_initialize(mvm, min_backoff); | |
e02a9d60 EH |
473 | /* set the nvm_file_name according to priority */ |
474 | if (iwlwifi_mod_params.nvm_file) | |
475 | mvm->nvm_file_name = iwlwifi_mod_params.nvm_file; | |
476 | else | |
477 | mvm->nvm_file_name = mvm->cfg->default_nvm_file; | |
9ee718aa | 478 | |
e02a9d60 | 479 | if (WARN(cfg->no_power_up_nic_in_init && !mvm->nvm_file_name, |
14b485f0 EH |
480 | "not allowing power-up and not having nvm_file\n")) |
481 | goto out_free; | |
482 | ||
81a67e32 | 483 | /* |
14b485f0 EH |
484 | * Even if nvm exists in the nvm_file driver should read agin the nvm |
485 | * from the nic because there might be entries that exist in the OTP | |
486 | * and not in the file. | |
487 | * for nics with no_power_up_nic_in_init: rely completley on nvm_file | |
81a67e32 | 488 | */ |
e02a9d60 | 489 | if (cfg->no_power_up_nic_in_init && mvm->nvm_file_name) { |
14b485f0 | 490 | err = iwl_nvm_init(mvm, false); |
8c678ed4 EP |
491 | if (err) |
492 | goto out_free; | |
81a67e32 EL |
493 | } else { |
494 | err = iwl_trans_start_hw(mvm->trans); | |
495 | if (err) | |
496 | goto out_free; | |
497 | ||
498 | mutex_lock(&mvm->mutex); | |
499 | err = iwl_run_init_mvm_ucode(mvm, true); | |
a4082843 | 500 | iwl_trans_stop_device(trans); |
81a67e32 EL |
501 | mutex_unlock(&mvm->mutex); |
502 | /* returns 0 if successful, 1 if success but in rfkill */ | |
503 | if (err < 0 && !iwlmvm_mod_params.init_dbg) { | |
504 | IWL_ERR(mvm, "Failed to run INIT ucode: %d\n", err); | |
505 | goto out_free; | |
506 | } | |
8ca151b5 JB |
507 | } |
508 | ||
fb98be5e DS |
509 | if (mvm->fw->ucode_capa.api[0] & IWL_UCODE_TLV_API_LMAC_SCAN) |
510 | scan_size = sizeof(struct iwl_scan_req_unified_lmac) + | |
511 | sizeof(struct iwl_scan_channel_cfg_lmac) * | |
512 | mvm->fw->ucode_capa.n_scan_channels + | |
513 | sizeof(struct iwl_scan_probe_req); | |
514 | else | |
515 | scan_size = sizeof(struct iwl_scan_cmd) + | |
516 | mvm->fw->ucode_capa.max_probe_length + | |
517 | mvm->fw->ucode_capa.n_scan_channels * | |
518 | sizeof(struct iwl_scan_channel); | |
519 | ||
8ca151b5 JB |
520 | mvm->scan_cmd = kmalloc(scan_size, GFP_KERNEL); |
521 | if (!mvm->scan_cmd) | |
522 | goto out_free; | |
523 | ||
524 | err = iwl_mvm_mac_setup_register(mvm); | |
525 | if (err) | |
526 | goto out_free; | |
527 | ||
528 | err = iwl_mvm_dbgfs_register(mvm, dbgfs_dir); | |
529 | if (err) | |
530 | goto out_unregister; | |
531 | ||
3848ab66 MG |
532 | memset(&mvm->rx_stats, 0, sizeof(struct mvm_statistics_rx)); |
533 | ||
7498cf4c EP |
534 | /* rpm starts with a taken ref. only set the appropriate bit here. */ |
535 | set_bit(IWL_MVM_REF_UCODE_DOWN, mvm->ref_bitmap); | |
536 | ||
8ca151b5 JB |
537 | return op_mode; |
538 | ||
539 | out_unregister: | |
540 | ieee80211_unregister_hw(mvm->hw); | |
91b0d119 | 541 | iwl_mvm_leds_exit(mvm); |
8ca151b5 JB |
542 | out_free: |
543 | iwl_phy_db_free(mvm->phy_db); | |
544 | kfree(mvm->scan_cmd); | |
e02a9d60 | 545 | if (!cfg->no_power_up_nic_in_init || !mvm->nvm_file_name) |
a4082843 | 546 | iwl_trans_op_mode_leave(trans); |
8ca151b5 JB |
547 | ieee80211_free_hw(mvm->hw); |
548 | return NULL; | |
549 | } | |
550 | ||
551 | static void iwl_op_mode_mvm_stop(struct iwl_op_mode *op_mode) | |
552 | { | |
553 | struct iwl_mvm *mvm = IWL_OP_MODE_GET_MVM(op_mode); | |
554 | int i; | |
555 | ||
556 | iwl_mvm_leds_exit(mvm); | |
557 | ||
9ee718aa EL |
558 | iwl_mvm_tt_exit(mvm); |
559 | ||
8ca151b5 JB |
560 | ieee80211_unregister_hw(mvm->hw); |
561 | ||
562 | kfree(mvm->scan_cmd); | |
1bd3cbc1 | 563 | vfree(mvm->fw_error_dump); |
e59647ea EP |
564 | kfree(mvm->mcast_filter_cmd); |
565 | mvm->mcast_filter_cmd = NULL; | |
8ca151b5 | 566 | |
afc66bb7 JB |
567 | #if defined(CONFIG_PM_SLEEP) && defined(CONFIG_IWLWIFI_DEBUGFS) |
568 | kfree(mvm->d3_resume_sram); | |
569 | #endif | |
570 | ||
a4082843 | 571 | iwl_trans_op_mode_leave(mvm->trans); |
8ca151b5 JB |
572 | |
573 | iwl_phy_db_free(mvm->phy_db); | |
574 | mvm->phy_db = NULL; | |
575 | ||
8ca151b5 | 576 | iwl_free_nvm_data(mvm->nvm_data); |
ae2b21b0 | 577 | for (i = 0; i < NVM_MAX_NUM_SECTIONS; i++) |
8ca151b5 JB |
578 | kfree(mvm->nvm_sections[i].data); |
579 | ||
580 | ieee80211_free_hw(mvm->hw); | |
581 | } | |
582 | ||
583 | struct iwl_async_handler_entry { | |
584 | struct list_head list; | |
585 | struct iwl_rx_cmd_buffer rxb; | |
586 | int (*fn)(struct iwl_mvm *mvm, struct iwl_rx_cmd_buffer *rxb, | |
587 | struct iwl_device_cmd *cmd); | |
588 | }; | |
589 | ||
590 | void iwl_mvm_async_handlers_purge(struct iwl_mvm *mvm) | |
591 | { | |
592 | struct iwl_async_handler_entry *entry, *tmp; | |
593 | ||
594 | spin_lock_bh(&mvm->async_handlers_lock); | |
595 | list_for_each_entry_safe(entry, tmp, &mvm->async_handlers_list, list) { | |
596 | iwl_free_rxb(&entry->rxb); | |
597 | list_del(&entry->list); | |
598 | kfree(entry); | |
599 | } | |
600 | spin_unlock_bh(&mvm->async_handlers_lock); | |
601 | } | |
602 | ||
603 | static void iwl_mvm_async_handlers_wk(struct work_struct *wk) | |
604 | { | |
605 | struct iwl_mvm *mvm = | |
606 | container_of(wk, struct iwl_mvm, async_handlers_wk); | |
607 | struct iwl_async_handler_entry *entry, *tmp; | |
608 | struct list_head local_list; | |
609 | ||
610 | INIT_LIST_HEAD(&local_list); | |
611 | ||
612 | /* Ensure that we are not in stop flow (check iwl_mvm_mac_stop) */ | |
613 | mutex_lock(&mvm->mutex); | |
614 | ||
615 | /* | |
616 | * Sync with Rx path with a lock. Remove all the entries from this list, | |
617 | * add them to a local one (lock free), and then handle them. | |
618 | */ | |
619 | spin_lock_bh(&mvm->async_handlers_lock); | |
620 | list_splice_init(&mvm->async_handlers_list, &local_list); | |
621 | spin_unlock_bh(&mvm->async_handlers_lock); | |
622 | ||
623 | list_for_each_entry_safe(entry, tmp, &local_list, list) { | |
624 | if (entry->fn(mvm, &entry->rxb, NULL)) | |
625 | IWL_WARN(mvm, | |
626 | "returned value from ASYNC handlers are ignored\n"); | |
627 | iwl_free_rxb(&entry->rxb); | |
628 | list_del(&entry->list); | |
629 | kfree(entry); | |
630 | } | |
631 | mutex_unlock(&mvm->mutex); | |
632 | } | |
633 | ||
634 | static int iwl_mvm_rx_dispatch(struct iwl_op_mode *op_mode, | |
635 | struct iwl_rx_cmd_buffer *rxb, | |
636 | struct iwl_device_cmd *cmd) | |
637 | { | |
638 | struct iwl_rx_packet *pkt = rxb_addr(rxb); | |
639 | struct iwl_mvm *mvm = IWL_OP_MODE_GET_MVM(op_mode); | |
640 | u8 i; | |
641 | ||
642 | /* | |
643 | * Do the notification wait before RX handlers so | |
644 | * even if the RX handler consumes the RXB we have | |
645 | * access to it in the notification wait entry. | |
646 | */ | |
647 | iwl_notification_wait_notify(&mvm->notif_wait, pkt); | |
648 | ||
649 | for (i = 0; i < ARRAY_SIZE(iwl_mvm_rx_handlers); i++) { | |
650 | const struct iwl_rx_handlers *rx_h = &iwl_mvm_rx_handlers[i]; | |
36eed56a EG |
651 | struct iwl_async_handler_entry *entry; |
652 | ||
653 | if (rx_h->cmd_id != pkt->hdr.cmd) | |
654 | continue; | |
655 | ||
656 | if (!rx_h->async) | |
657 | return rx_h->fn(mvm, rxb, cmd); | |
658 | ||
659 | entry = kzalloc(sizeof(*entry), GFP_ATOMIC); | |
660 | /* we can't do much... */ | |
661 | if (!entry) | |
662 | return 0; | |
663 | ||
664 | entry->rxb._page = rxb_steal_page(rxb); | |
665 | entry->rxb._offset = rxb->_offset; | |
666 | entry->rxb._rx_page_order = rxb->_rx_page_order; | |
667 | entry->fn = rx_h->fn; | |
668 | spin_lock(&mvm->async_handlers_lock); | |
669 | list_add_tail(&entry->list, &mvm->async_handlers_list); | |
670 | spin_unlock(&mvm->async_handlers_lock); | |
671 | schedule_work(&mvm->async_handlers_wk); | |
672 | break; | |
8ca151b5 JB |
673 | } |
674 | ||
675 | return 0; | |
676 | } | |
677 | ||
678 | static void iwl_mvm_stop_sw_queue(struct iwl_op_mode *op_mode, int queue) | |
679 | { | |
680 | struct iwl_mvm *mvm = IWL_OP_MODE_GET_MVM(op_mode); | |
681 | int mq = mvm->queue_to_mac80211[queue]; | |
682 | ||
683 | if (WARN_ON_ONCE(mq == IWL_INVALID_MAC80211_QUEUE)) | |
684 | return; | |
685 | ||
686 | if (atomic_inc_return(&mvm->queue_stop_count[mq]) > 1) { | |
687 | IWL_DEBUG_TX_QUEUES(mvm, | |
688 | "queue %d (mac80211 %d) already stopped\n", | |
689 | queue, mq); | |
690 | return; | |
691 | } | |
692 | ||
693 | set_bit(mq, &mvm->transport_queue_stop); | |
694 | ieee80211_stop_queue(mvm->hw, mq); | |
695 | } | |
696 | ||
697 | static void iwl_mvm_wake_sw_queue(struct iwl_op_mode *op_mode, int queue) | |
698 | { | |
699 | struct iwl_mvm *mvm = IWL_OP_MODE_GET_MVM(op_mode); | |
700 | int mq = mvm->queue_to_mac80211[queue]; | |
701 | ||
702 | if (WARN_ON_ONCE(mq == IWL_INVALID_MAC80211_QUEUE)) | |
703 | return; | |
704 | ||
705 | if (atomic_dec_return(&mvm->queue_stop_count[mq]) > 0) { | |
706 | IWL_DEBUG_TX_QUEUES(mvm, | |
707 | "queue %d (mac80211 %d) already awake\n", | |
708 | queue, mq); | |
709 | return; | |
710 | } | |
711 | ||
712 | clear_bit(mq, &mvm->transport_queue_stop); | |
713 | ||
714 | ieee80211_wake_queue(mvm->hw, mq); | |
715 | } | |
716 | ||
9ee718aa EL |
717 | void iwl_mvm_set_hw_ctkill_state(struct iwl_mvm *mvm, bool state) |
718 | { | |
719 | if (state) | |
720 | set_bit(IWL_MVM_STATUS_HW_CTKILL, &mvm->status); | |
721 | else | |
722 | clear_bit(IWL_MVM_STATUS_HW_CTKILL, &mvm->status); | |
723 | ||
724 | wiphy_rfkill_set_hw_state(mvm->hw->wiphy, iwl_mvm_is_radio_killed(mvm)); | |
725 | } | |
726 | ||
14cfca71 | 727 | static bool iwl_mvm_set_hw_rfkill_state(struct iwl_op_mode *op_mode, bool state) |
8ca151b5 JB |
728 | { |
729 | struct iwl_mvm *mvm = IWL_OP_MODE_GET_MVM(op_mode); | |
730 | ||
731 | if (state) | |
732 | set_bit(IWL_MVM_STATUS_HW_RFKILL, &mvm->status); | |
733 | else | |
734 | clear_bit(IWL_MVM_STATUS_HW_RFKILL, &mvm->status); | |
735 | ||
9ee718aa | 736 | wiphy_rfkill_set_hw_state(mvm->hw->wiphy, iwl_mvm_is_radio_killed(mvm)); |
14cfca71 JB |
737 | |
738 | return state && mvm->cur_ucode != IWL_UCODE_INIT; | |
8ca151b5 JB |
739 | } |
740 | ||
741 | static void iwl_mvm_free_skb(struct iwl_op_mode *op_mode, struct sk_buff *skb) | |
742 | { | |
743 | struct iwl_mvm *mvm = IWL_OP_MODE_GET_MVM(op_mode); | |
744 | struct ieee80211_tx_info *info; | |
745 | ||
746 | info = IEEE80211_SKB_CB(skb); | |
747 | iwl_trans_free_tx_cmd(mvm->trans, info->driver_data[1]); | |
748 | ieee80211_free_txskb(mvm->hw, skb); | |
749 | } | |
750 | ||
ac1ed416 JB |
751 | struct iwl_mvm_reprobe { |
752 | struct device *dev; | |
753 | struct work_struct work; | |
754 | }; | |
755 | ||
756 | static void iwl_mvm_reprobe_wk(struct work_struct *wk) | |
757 | { | |
758 | struct iwl_mvm_reprobe *reprobe; | |
759 | ||
760 | reprobe = container_of(wk, struct iwl_mvm_reprobe, work); | |
761 | if (device_reprobe(reprobe->dev)) | |
762 | dev_err(reprobe->dev, "reprobe failed!\n"); | |
763 | kfree(reprobe); | |
764 | module_put(THIS_MODULE); | |
765 | } | |
766 | ||
b08c1d97 | 767 | void iwl_mvm_nic_restart(struct iwl_mvm *mvm, bool fw_error) |
8ca151b5 | 768 | { |
8ca151b5 JB |
769 | iwl_abort_notification_waits(&mvm->notif_wait); |
770 | ||
992f81fc DS |
771 | /* |
772 | * This is a bit racy, but worst case we tell mac80211 about | |
773 | * a stopped/aborted scan when that was already done which | |
774 | * is not a problem. It is necessary to abort any os scan | |
775 | * here because mac80211 requires having the scan cleared | |
776 | * before restarting. | |
777 | * We'll reset the scan_status to NONE in restart cleanup in | |
778 | * the next start() call from mac80211. If restart isn't called | |
779 | * (no fw restart) scan status will stay busy. | |
780 | */ | |
781 | switch (mvm->scan_status) { | |
782 | case IWL_MVM_SCAN_NONE: | |
783 | break; | |
784 | case IWL_MVM_SCAN_OS: | |
785 | ieee80211_scan_completed(mvm->hw, true); | |
786 | break; | |
787 | case IWL_MVM_SCAN_SCHED: | |
788 | /* Sched scan will be restarted by mac80211 in restart_hw. */ | |
789 | if (!mvm->restart_fw) | |
790 | ieee80211_sched_scan_stopped(mvm->hw); | |
791 | break; | |
792 | } | |
793 | ||
8ca151b5 JB |
794 | /* |
795 | * If we're restarting already, don't cycle restarts. | |
796 | * If INIT fw asserted, it will likely fail again. | |
797 | * If WoWLAN fw asserted, don't restart either, mac80211 | |
798 | * can't recover this since we're already half suspended. | |
799 | */ | |
800 | if (test_and_set_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status)) { | |
ac1ed416 JB |
801 | struct iwl_mvm_reprobe *reprobe; |
802 | ||
803 | IWL_ERR(mvm, | |
804 | "Firmware error during reconfiguration - reprobe!\n"); | |
805 | ||
806 | /* | |
807 | * get a module reference to avoid doing this while unloading | |
808 | * anyway and to avoid scheduling a work with code that's | |
809 | * being removed. | |
810 | */ | |
811 | if (!try_module_get(THIS_MODULE)) { | |
812 | IWL_ERR(mvm, "Module is being unloaded - abort\n"); | |
813 | return; | |
814 | } | |
815 | ||
816 | reprobe = kzalloc(sizeof(*reprobe), GFP_ATOMIC); | |
817 | if (!reprobe) { | |
818 | module_put(THIS_MODULE); | |
819 | return; | |
820 | } | |
821 | reprobe->dev = mvm->trans->dev; | |
822 | INIT_WORK(&reprobe->work, iwl_mvm_reprobe_wk); | |
823 | schedule_work(&reprobe->work); | |
b08c1d97 LC |
824 | } else if (mvm->cur_ucode == IWL_UCODE_REGULAR && |
825 | (!fw_error || mvm->restart_fw)) { | |
7498cf4c EP |
826 | /* don't let the transport/FW power down */ |
827 | iwl_mvm_ref(mvm, IWL_MVM_REF_UCODE_DOWN); | |
828 | ||
b08c1d97 | 829 | if (fw_error && mvm->restart_fw > 0) |
291aa7c4 | 830 | mvm->restart_fw--; |
8ca151b5 JB |
831 | ieee80211_restart_hw(mvm->hw); |
832 | } | |
833 | } | |
834 | ||
715c998f EG |
835 | static void iwl_mvm_nic_error(struct iwl_op_mode *op_mode) |
836 | { | |
837 | struct iwl_mvm *mvm = IWL_OP_MODE_GET_MVM(op_mode); | |
838 | ||
839 | iwl_mvm_dump_nic_error_log(mvm); | |
1bd3cbc1 | 840 | |
b08c1d97 | 841 | iwl_mvm_nic_restart(mvm, true); |
715c998f EG |
842 | } |
843 | ||
8ca151b5 JB |
844 | static void iwl_mvm_cmd_queue_full(struct iwl_op_mode *op_mode) |
845 | { | |
715c998f EG |
846 | struct iwl_mvm *mvm = IWL_OP_MODE_GET_MVM(op_mode); |
847 | ||
8ca151b5 | 848 | WARN_ON(1); |
b08c1d97 | 849 | iwl_mvm_nic_restart(mvm, true); |
8ca151b5 JB |
850 | } |
851 | ||
37577fe2 EP |
852 | struct iwl_d0i3_iter_data { |
853 | struct iwl_mvm *mvm; | |
854 | u8 ap_sta_id; | |
855 | u8 vif_count; | |
b2492501 AN |
856 | u8 offloading_tid; |
857 | bool disable_offloading; | |
37577fe2 EP |
858 | }; |
859 | ||
b2492501 AN |
860 | static bool iwl_mvm_disallow_offloading(struct iwl_mvm *mvm, |
861 | struct ieee80211_vif *vif, | |
862 | struct iwl_d0i3_iter_data *iter_data) | |
863 | { | |
864 | struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); | |
865 | struct ieee80211_sta *ap_sta; | |
866 | struct iwl_mvm_sta *mvmsta; | |
867 | u32 available_tids = 0; | |
868 | u8 tid; | |
869 | ||
870 | if (WARN_ON(vif->type != NL80211_IFTYPE_STATION || | |
871 | mvmvif->ap_sta_id == IWL_MVM_STATION_COUNT)) | |
872 | return false; | |
873 | ||
874 | ap_sta = rcu_dereference(mvm->fw_id_to_mac_id[mvmvif->ap_sta_id]); | |
875 | if (IS_ERR_OR_NULL(ap_sta)) | |
876 | return false; | |
877 | ||
878 | mvmsta = iwl_mvm_sta_from_mac80211(ap_sta); | |
879 | spin_lock_bh(&mvmsta->lock); | |
880 | for (tid = 0; tid < IWL_MAX_TID_COUNT; tid++) { | |
881 | struct iwl_mvm_tid_data *tid_data = &mvmsta->tid_data[tid]; | |
882 | ||
883 | /* | |
884 | * in case of pending tx packets, don't use this tid | |
885 | * for offloading in order to prevent reuse of the same | |
886 | * qos seq counters. | |
887 | */ | |
888 | if (iwl_mvm_tid_queued(tid_data)) | |
889 | continue; | |
890 | ||
891 | if (tid_data->state != IWL_AGG_OFF) | |
892 | continue; | |
893 | ||
894 | available_tids |= BIT(tid); | |
895 | } | |
896 | spin_unlock_bh(&mvmsta->lock); | |
897 | ||
898 | /* | |
899 | * disallow protocol offloading if we have no available tid | |
900 | * (with no pending frames and no active aggregation, | |
901 | * as we don't handle "holes" properly - the scheduler needs the | |
902 | * frame's seq number and TFD index to match) | |
903 | */ | |
904 | if (!available_tids) | |
905 | return true; | |
906 | ||
907 | /* for simplicity, just use the first available tid */ | |
908 | iter_data->offloading_tid = ffs(available_tids) - 1; | |
909 | return false; | |
910 | } | |
911 | ||
d6230972 EP |
912 | static void iwl_mvm_enter_d0i3_iterator(void *_data, u8 *mac, |
913 | struct ieee80211_vif *vif) | |
914 | { | |
37577fe2 EP |
915 | struct iwl_d0i3_iter_data *data = _data; |
916 | struct iwl_mvm *mvm = data->mvm; | |
917 | struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); | |
d6230972 EP |
918 | u32 flags = CMD_ASYNC | CMD_HIGH_PRIO | CMD_SEND_IN_IDLE; |
919 | ||
920 | IWL_DEBUG_RPM(mvm, "entering D0i3 - vif %pM\n", vif->addr); | |
921 | if (vif->type != NL80211_IFTYPE_STATION || | |
922 | !vif->bss_conf.assoc) | |
923 | return; | |
924 | ||
b2492501 AN |
925 | /* |
926 | * in case of pending tx packets or active aggregations, | |
927 | * avoid offloading features in order to prevent reuse of | |
928 | * the same qos seq counters. | |
929 | */ | |
930 | if (iwl_mvm_disallow_offloading(mvm, vif, data)) | |
931 | data->disable_offloading = true; | |
932 | ||
d6230972 | 933 | iwl_mvm_update_d0i3_power_mode(mvm, vif, true, flags); |
8bd22e7b | 934 | iwl_mvm_send_proto_offload(mvm, vif, data->disable_offloading, flags); |
d6230972 EP |
935 | |
936 | /* | |
937 | * on init/association, mvm already configures POWER_TABLE_CMD | |
938 | * and REPLY_MCAST_FILTER_CMD, so currently don't | |
939 | * reconfigure them (we might want to use different | |
940 | * params later on, though). | |
941 | */ | |
37577fe2 EP |
942 | data->ap_sta_id = mvmvif->ap_sta_id; |
943 | data->vif_count++; | |
d6230972 EP |
944 | } |
945 | ||
1a95c8df EP |
946 | static void iwl_mvm_set_wowlan_data(struct iwl_mvm *mvm, |
947 | struct iwl_wowlan_config_cmd_v3 *cmd, | |
948 | struct iwl_d0i3_iter_data *iter_data) | |
949 | { | |
950 | struct ieee80211_sta *ap_sta; | |
951 | struct iwl_mvm_sta *mvm_ap_sta; | |
952 | ||
953 | if (iter_data->ap_sta_id == IWL_MVM_STATION_COUNT) | |
954 | return; | |
955 | ||
956 | rcu_read_lock(); | |
957 | ||
958 | ap_sta = rcu_dereference(mvm->fw_id_to_mac_id[iter_data->ap_sta_id]); | |
959 | if (IS_ERR_OR_NULL(ap_sta)) | |
960 | goto out; | |
961 | ||
962 | mvm_ap_sta = iwl_mvm_sta_from_mac80211(ap_sta); | |
963 | cmd->common.is_11n_connection = ap_sta->ht_cap.ht_supported; | |
b2492501 | 964 | cmd->offloading_tid = iter_data->offloading_tid; |
1a95c8df EP |
965 | |
966 | /* | |
967 | * The d0i3 uCode takes care of the nonqos counters, | |
968 | * so configure only the qos seq ones. | |
969 | */ | |
970 | iwl_mvm_set_wowlan_qos_seq(mvm_ap_sta, &cmd->common); | |
971 | out: | |
972 | rcu_read_unlock(); | |
973 | } | |
b3370d47 EP |
974 | static int iwl_mvm_enter_d0i3(struct iwl_op_mode *op_mode) |
975 | { | |
976 | struct iwl_mvm *mvm = IWL_OP_MODE_GET_MVM(op_mode); | |
98ee7783 | 977 | u32 flags = CMD_ASYNC | CMD_HIGH_PRIO | CMD_SEND_IN_IDLE; |
b77f06d9 | 978 | int ret; |
37577fe2 EP |
979 | struct iwl_d0i3_iter_data d0i3_iter_data = { |
980 | .mvm = mvm, | |
981 | }; | |
1a95c8df EP |
982 | struct iwl_wowlan_config_cmd_v3 wowlan_config_cmd = { |
983 | .common = { | |
984 | .wakeup_filter = | |
985 | cpu_to_le32(IWL_WOWLAN_WAKEUP_RX_FRAME | | |
986 | IWL_WOWLAN_WAKEUP_BEACON_MISS | | |
987 | IWL_WOWLAN_WAKEUP_LINK_CHANGE | | |
988 | IWL_WOWLAN_WAKEUP_BCN_FILTERING), | |
989 | }, | |
b77f06d9 | 990 | }; |
98ee7783 AN |
991 | struct iwl_d3_manager_config d3_cfg_cmd = { |
992 | .min_sleep_time = cpu_to_le32(1000), | |
993 | }; | |
b3370d47 EP |
994 | |
995 | IWL_DEBUG_RPM(mvm, "MVM entering D0i3\n"); | |
98ee7783 | 996 | |
b2492501 AN |
997 | /* make sure we have no running tx while configuring the qos */ |
998 | set_bit(IWL_MVM_STATUS_IN_D0I3, &mvm->status); | |
999 | synchronize_net(); | |
1000 | ||
d6230972 EP |
1001 | ieee80211_iterate_active_interfaces_atomic(mvm->hw, |
1002 | IEEE80211_IFACE_ITER_NORMAL, | |
1003 | iwl_mvm_enter_d0i3_iterator, | |
37577fe2 EP |
1004 | &d0i3_iter_data); |
1005 | if (d0i3_iter_data.vif_count == 1) { | |
1006 | mvm->d0i3_ap_sta_id = d0i3_iter_data.ap_sta_id; | |
b2492501 | 1007 | mvm->d0i3_offloading = !d0i3_iter_data.disable_offloading; |
37577fe2 EP |
1008 | } else { |
1009 | WARN_ON_ONCE(d0i3_iter_data.vif_count > 1); | |
1010 | mvm->d0i3_ap_sta_id = IWL_MVM_STATION_COUNT; | |
b2492501 | 1011 | mvm->d0i3_offloading = false; |
37577fe2 | 1012 | } |
d6230972 | 1013 | |
1a95c8df | 1014 | iwl_mvm_set_wowlan_data(mvm, &wowlan_config_cmd, &d0i3_iter_data); |
b77f06d9 EP |
1015 | ret = iwl_mvm_send_cmd_pdu(mvm, WOWLAN_CONFIGURATION, flags, |
1016 | sizeof(wowlan_config_cmd), | |
1017 | &wowlan_config_cmd); | |
1018 | if (ret) | |
1019 | return ret; | |
1020 | ||
98ee7783 AN |
1021 | return iwl_mvm_send_cmd_pdu(mvm, D3_CONFIG_CMD, |
1022 | flags | CMD_MAKE_TRANS_IDLE, | |
1023 | sizeof(d3_cfg_cmd), &d3_cfg_cmd); | |
b3370d47 EP |
1024 | } |
1025 | ||
d6230972 EP |
1026 | static void iwl_mvm_exit_d0i3_iterator(void *_data, u8 *mac, |
1027 | struct ieee80211_vif *vif) | |
1028 | { | |
1029 | struct iwl_mvm *mvm = _data; | |
1030 | u32 flags = CMD_ASYNC | CMD_HIGH_PRIO; | |
1031 | ||
1032 | IWL_DEBUG_RPM(mvm, "exiting D0i3 - vif %pM\n", vif->addr); | |
1033 | if (vif->type != NL80211_IFTYPE_STATION || | |
1034 | !vif->bss_conf.assoc) | |
1035 | return; | |
1036 | ||
1037 | iwl_mvm_update_d0i3_power_mode(mvm, vif, false, flags); | |
1038 | } | |
1039 | ||
37577fe2 EP |
1040 | static void iwl_mvm_d0i3_disconnect_iter(void *data, u8 *mac, |
1041 | struct ieee80211_vif *vif) | |
1042 | { | |
1043 | struct iwl_mvm *mvm = data; | |
1044 | struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); | |
1045 | ||
1046 | if (vif->type == NL80211_IFTYPE_STATION && vif->bss_conf.assoc && | |
1047 | mvm->d0i3_ap_sta_id == mvmvif->ap_sta_id) | |
1048 | ieee80211_connection_loss(vif); | |
1049 | } | |
1050 | ||
b2492501 AN |
1051 | void iwl_mvm_d0i3_enable_tx(struct iwl_mvm *mvm, __le16 *qos_seq) |
1052 | { | |
1053 | struct ieee80211_sta *sta = NULL; | |
1054 | struct iwl_mvm_sta *mvm_ap_sta; | |
1055 | int i; | |
1056 | bool wake_queues = false; | |
1057 | ||
1058 | lockdep_assert_held(&mvm->mutex); | |
1059 | ||
1060 | spin_lock_bh(&mvm->d0i3_tx_lock); | |
1061 | ||
1062 | if (mvm->d0i3_ap_sta_id == IWL_MVM_STATION_COUNT) | |
1063 | goto out; | |
1064 | ||
1065 | IWL_DEBUG_RPM(mvm, "re-enqueue packets\n"); | |
1066 | ||
1067 | /* get the sta in order to update seq numbers and re-enqueue skbs */ | |
1068 | sta = rcu_dereference_protected( | |
1069 | mvm->fw_id_to_mac_id[mvm->d0i3_ap_sta_id], | |
1070 | lockdep_is_held(&mvm->mutex)); | |
1071 | ||
1072 | if (IS_ERR_OR_NULL(sta)) { | |
1073 | sta = NULL; | |
1074 | goto out; | |
1075 | } | |
1076 | ||
1077 | if (mvm->d0i3_offloading && qos_seq) { | |
1078 | /* update qos seq numbers if offloading was enabled */ | |
1079 | mvm_ap_sta = (struct iwl_mvm_sta *)sta->drv_priv; | |
1080 | for (i = 0; i < IWL_MAX_TID_COUNT; i++) { | |
1081 | u16 seq = le16_to_cpu(qos_seq[i]); | |
1082 | /* firmware stores last-used one, we store next one */ | |
1083 | seq += 0x10; | |
1084 | mvm_ap_sta->tid_data[i].seq_number = seq; | |
1085 | } | |
1086 | } | |
1087 | out: | |
1088 | /* re-enqueue (or drop) all packets */ | |
1089 | while (!skb_queue_empty(&mvm->d0i3_tx)) { | |
1090 | struct sk_buff *skb = __skb_dequeue(&mvm->d0i3_tx); | |
1091 | ||
1092 | if (!sta || iwl_mvm_tx_skb(mvm, skb, sta)) | |
1093 | ieee80211_free_txskb(mvm->hw, skb); | |
1094 | ||
1095 | /* if the skb_queue is not empty, we need to wake queues */ | |
1096 | wake_queues = true; | |
1097 | } | |
1098 | clear_bit(IWL_MVM_STATUS_IN_D0I3, &mvm->status); | |
1099 | wake_up(&mvm->d0i3_exit_waitq); | |
1100 | mvm->d0i3_ap_sta_id = IWL_MVM_STATION_COUNT; | |
1101 | if (wake_queues) | |
1102 | ieee80211_wake_queues(mvm->hw); | |
1103 | ||
1104 | spin_unlock_bh(&mvm->d0i3_tx_lock); | |
1105 | } | |
1106 | ||
37577fe2 EP |
1107 | static void iwl_mvm_d0i3_exit_work(struct work_struct *wk) |
1108 | { | |
1109 | struct iwl_mvm *mvm = container_of(wk, struct iwl_mvm, d0i3_exit_work); | |
1110 | struct iwl_host_cmd get_status_cmd = { | |
1111 | .id = WOWLAN_GET_STATUSES, | |
a1022927 | 1112 | .flags = CMD_HIGH_PRIO | CMD_WANT_SKB, |
37577fe2 | 1113 | }; |
3afec639 | 1114 | struct iwl_wowlan_status *status; |
37577fe2 EP |
1115 | int ret; |
1116 | u32 disconnection_reasons, wakeup_reasons; | |
b2492501 | 1117 | __le16 *qos_seq = NULL; |
37577fe2 EP |
1118 | |
1119 | mutex_lock(&mvm->mutex); | |
1120 | ret = iwl_mvm_send_cmd(mvm, &get_status_cmd); | |
1121 | if (ret) | |
1122 | goto out; | |
1123 | ||
1124 | if (!get_status_cmd.resp_pkt) | |
1125 | goto out; | |
1126 | ||
1127 | status = (void *)get_status_cmd.resp_pkt->data; | |
1128 | wakeup_reasons = le32_to_cpu(status->wakeup_reasons); | |
b2492501 | 1129 | qos_seq = status->qos_seq_ctr; |
37577fe2 EP |
1130 | |
1131 | IWL_DEBUG_RPM(mvm, "wakeup reasons: 0x%x\n", wakeup_reasons); | |
1132 | ||
1133 | disconnection_reasons = | |
1134 | IWL_WOWLAN_WAKEUP_BY_DISCONNECTION_ON_MISSED_BEACON | | |
1135 | IWL_WOWLAN_WAKEUP_BY_DISCONNECTION_ON_DEAUTH; | |
1136 | if (wakeup_reasons & disconnection_reasons) | |
1137 | ieee80211_iterate_active_interfaces( | |
1138 | mvm->hw, IEEE80211_IFACE_ITER_NORMAL, | |
1139 | iwl_mvm_d0i3_disconnect_iter, mvm); | |
1140 | ||
1141 | iwl_free_resp(&get_status_cmd); | |
1142 | out: | |
b2492501 | 1143 | iwl_mvm_d0i3_enable_tx(mvm, qos_seq); |
d15a747f | 1144 | iwl_mvm_unref(mvm, IWL_MVM_REF_EXIT_WORK); |
37577fe2 EP |
1145 | mutex_unlock(&mvm->mutex); |
1146 | } | |
1147 | ||
d15a747f | 1148 | int _iwl_mvm_exit_d0i3(struct iwl_mvm *mvm) |
b3370d47 | 1149 | { |
98ee7783 AN |
1150 | u32 flags = CMD_ASYNC | CMD_HIGH_PRIO | CMD_SEND_IN_IDLE | |
1151 | CMD_WAKE_UP_TRANS; | |
d6230972 | 1152 | int ret; |
b3370d47 EP |
1153 | |
1154 | IWL_DEBUG_RPM(mvm, "MVM exiting D0i3\n"); | |
98ee7783 | 1155 | |
d15a747f EP |
1156 | mutex_lock(&mvm->d0i3_suspend_mutex); |
1157 | if (test_bit(D0I3_DEFER_WAKEUP, &mvm->d0i3_suspend_flags)) { | |
1158 | IWL_DEBUG_RPM(mvm, "Deferring d0i3 exit until resume\n"); | |
1159 | __set_bit(D0I3_PENDING_WAKEUP, &mvm->d0i3_suspend_flags); | |
1160 | mutex_unlock(&mvm->d0i3_suspend_mutex); | |
1161 | return 0; | |
1162 | } | |
1163 | mutex_unlock(&mvm->d0i3_suspend_mutex); | |
1164 | ||
d6230972 EP |
1165 | ret = iwl_mvm_send_cmd_pdu(mvm, D0I3_END_CMD, flags, 0, NULL); |
1166 | if (ret) | |
37577fe2 | 1167 | goto out; |
d6230972 EP |
1168 | |
1169 | ieee80211_iterate_active_interfaces_atomic(mvm->hw, | |
1170 | IEEE80211_IFACE_ITER_NORMAL, | |
1171 | iwl_mvm_exit_d0i3_iterator, | |
1172 | mvm); | |
37577fe2 EP |
1173 | out: |
1174 | schedule_work(&mvm->d0i3_exit_work); | |
1175 | return ret; | |
b3370d47 EP |
1176 | } |
1177 | ||
d15a747f EP |
1178 | static int iwl_mvm_exit_d0i3(struct iwl_op_mode *op_mode) |
1179 | { | |
1180 | struct iwl_mvm *mvm = IWL_OP_MODE_GET_MVM(op_mode); | |
1181 | ||
1182 | iwl_mvm_ref(mvm, IWL_MVM_REF_EXIT_WORK); | |
1183 | return _iwl_mvm_exit_d0i3(mvm); | |
1184 | } | |
1185 | ||
f14d6b39 JB |
1186 | static void iwl_mvm_napi_add(struct iwl_op_mode *op_mode, |
1187 | struct napi_struct *napi, | |
1188 | struct net_device *napi_dev, | |
1189 | int (*poll)(struct napi_struct *, int), | |
1190 | int weight) | |
1191 | { | |
1192 | struct iwl_mvm *mvm = IWL_OP_MODE_GET_MVM(op_mode); | |
1193 | ||
1194 | ieee80211_napi_add(mvm->hw, napi, napi_dev, poll, weight); | |
1195 | } | |
1196 | ||
8ca151b5 JB |
1197 | static const struct iwl_op_mode_ops iwl_mvm_ops = { |
1198 | .start = iwl_op_mode_mvm_start, | |
1199 | .stop = iwl_op_mode_mvm_stop, | |
1200 | .rx = iwl_mvm_rx_dispatch, | |
1201 | .queue_full = iwl_mvm_stop_sw_queue, | |
1202 | .queue_not_full = iwl_mvm_wake_sw_queue, | |
1203 | .hw_rf_kill = iwl_mvm_set_hw_rfkill_state, | |
1204 | .free_skb = iwl_mvm_free_skb, | |
1205 | .nic_error = iwl_mvm_nic_error, | |
1206 | .cmd_queue_full = iwl_mvm_cmd_queue_full, | |
1207 | .nic_config = iwl_mvm_nic_config, | |
b3370d47 EP |
1208 | .enter_d0i3 = iwl_mvm_enter_d0i3, |
1209 | .exit_d0i3 = iwl_mvm_exit_d0i3, | |
f14d6b39 | 1210 | .napi_add = iwl_mvm_napi_add, |
8ca151b5 | 1211 | }; |