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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. |
8b4139dc | 9 | * Copyright(c) 2013 - 2014 Intel Mobile Communications GmbH |
8ca151b5 JB |
10 | * |
11 | * This program is free software; you can redistribute it and/or modify | |
12 | * it under the terms of version 2 of the GNU General Public License as | |
13 | * published by the Free Software Foundation. | |
14 | * | |
15 | * This program is distributed in the hope that it will be useful, but | |
16 | * WITHOUT ANY WARRANTY; without even the implied warranty of | |
17 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
18 | * General Public License for more details. | |
19 | * | |
20 | * You should have received a copy of the GNU General Public License | |
21 | * along with this program; if not, write to the Free Software | |
22 | * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110, | |
23 | * USA | |
24 | * | |
25 | * The full GNU General Public License is included in this distribution | |
410dc5aa | 26 | * in the file called COPYING. |
8ca151b5 JB |
27 | * |
28 | * Contact Information: | |
29 | * Intel Linux Wireless <ilw@linux.intel.com> | |
30 | * Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497 | |
31 | * | |
32 | * BSD LICENSE | |
33 | * | |
51368bf7 | 34 | * Copyright(c) 2012 - 2014 Intel Corporation. All rights reserved. |
8b4139dc | 35 | * Copyright(c) 2013 - 2014 Intel Mobile Communications GmbH |
8ca151b5 JB |
36 | * All rights reserved. |
37 | * | |
38 | * Redistribution and use in source and binary forms, with or without | |
39 | * modification, are permitted provided that the following conditions | |
40 | * are met: | |
41 | * | |
42 | * * Redistributions of source code must retain the above copyright | |
43 | * notice, this list of conditions and the following disclaimer. | |
44 | * * Redistributions in binary form must reproduce the above copyright | |
45 | * notice, this list of conditions and the following disclaimer in | |
46 | * the documentation and/or other materials provided with the | |
47 | * distribution. | |
48 | * * Neither the name Intel Corporation nor the names of its | |
49 | * contributors may be used to endorse or promote products derived | |
50 | * from this software without specific prior written permission. | |
51 | * | |
52 | * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS | |
53 | * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT | |
54 | * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR | |
55 | * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT | |
56 | * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, | |
57 | * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT | |
58 | * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, | |
59 | * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY | |
60 | * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT | |
61 | * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE | |
62 | * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. | |
63 | * | |
64 | *****************************************************************************/ | |
65 | #include <linux/module.h> | |
1bd3cbc1 | 66 | #include <linux/vmalloc.h> |
8ca151b5 JB |
67 | #include <net/mac80211.h> |
68 | ||
69 | #include "iwl-notif-wait.h" | |
70 | #include "iwl-trans.h" | |
71 | #include "iwl-op-mode.h" | |
72 | #include "iwl-fw.h" | |
73 | #include "iwl-debug.h" | |
74 | #include "iwl-drv.h" | |
75 | #include "iwl-modparams.h" | |
76 | #include "mvm.h" | |
77 | #include "iwl-phy-db.h" | |
78 | #include "iwl-eeprom-parse.h" | |
79 | #include "iwl-csr.h" | |
80 | #include "iwl-io.h" | |
81 | #include "iwl-prph.h" | |
82 | #include "rs.h" | |
83 | #include "fw-api-scan.h" | |
84 | #include "time-event.h" | |
4d075007 | 85 | #include "iwl-fw-error-dump.h" |
8ca151b5 JB |
86 | |
87 | /* | |
88 | * module name, copyright, version, etc. | |
89 | */ | |
90 | #define DRV_DESCRIPTION "The new Intel(R) wireless AGN driver for Linux" | |
91 | ||
92 | #define DRV_VERSION IWLWIFI_VERSION | |
93 | ||
94 | MODULE_DESCRIPTION(DRV_DESCRIPTION); | |
95 | MODULE_VERSION(DRV_VERSION); | |
96 | MODULE_AUTHOR(DRV_COPYRIGHT " " DRV_AUTHOR); | |
97 | MODULE_LICENSE("GPL"); | |
98 | ||
99 | static const struct iwl_op_mode_ops iwl_mvm_ops; | |
100 | ||
101 | struct iwl_mvm_mod_params iwlmvm_mod_params = { | |
102 | .power_scheme = IWL_POWER_SCHEME_BPS, | |
103 | /* rest of fields are 0 by default */ | |
104 | }; | |
105 | ||
106 | module_param_named(init_dbg, iwlmvm_mod_params.init_dbg, bool, S_IRUGO); | |
107 | MODULE_PARM_DESC(init_dbg, | |
108 | "set to true to debug an ASSERT in INIT fw (default: false"); | |
109 | module_param_named(power_scheme, iwlmvm_mod_params.power_scheme, int, S_IRUGO); | |
110 | MODULE_PARM_DESC(power_scheme, | |
111 | "power management scheme: 1-active, 2-balanced, 3-low power, default: 2"); | |
112 | ||
113 | /* | |
114 | * module init and exit functions | |
115 | */ | |
116 | static int __init iwl_mvm_init(void) | |
117 | { | |
118 | int ret; | |
119 | ||
120 | ret = iwl_mvm_rate_control_register(); | |
121 | if (ret) { | |
122 | pr_err("Unable to register rate control algorithm: %d\n", ret); | |
123 | return ret; | |
124 | } | |
125 | ||
126 | ret = iwl_opmode_register("iwlmvm", &iwl_mvm_ops); | |
127 | ||
128 | if (ret) { | |
129 | pr_err("Unable to register MVM op_mode: %d\n", ret); | |
130 | iwl_mvm_rate_control_unregister(); | |
131 | } | |
132 | ||
133 | return ret; | |
134 | } | |
135 | module_init(iwl_mvm_init); | |
136 | ||
137 | static void __exit iwl_mvm_exit(void) | |
138 | { | |
139 | iwl_opmode_deregister("iwlmvm"); | |
140 | iwl_mvm_rate_control_unregister(); | |
141 | } | |
142 | module_exit(iwl_mvm_exit); | |
143 | ||
144 | static void iwl_mvm_nic_config(struct iwl_op_mode *op_mode) | |
145 | { | |
146 | struct iwl_mvm *mvm = IWL_OP_MODE_GET_MVM(op_mode); | |
147 | u8 radio_cfg_type, radio_cfg_step, radio_cfg_dash; | |
148 | u32 reg_val = 0; | |
149 | ||
d110cb51 EG |
150 | radio_cfg_type = (mvm->fw->phy_config & FW_PHY_CFG_RADIO_TYPE) >> |
151 | FW_PHY_CFG_RADIO_TYPE_POS; | |
152 | radio_cfg_step = (mvm->fw->phy_config & FW_PHY_CFG_RADIO_STEP) >> | |
153 | FW_PHY_CFG_RADIO_STEP_POS; | |
154 | radio_cfg_dash = (mvm->fw->phy_config & FW_PHY_CFG_RADIO_DASH) >> | |
155 | FW_PHY_CFG_RADIO_DASH_POS; | |
8ca151b5 JB |
156 | |
157 | /* SKU control */ | |
158 | reg_val |= CSR_HW_REV_STEP(mvm->trans->hw_rev) << | |
159 | CSR_HW_IF_CONFIG_REG_POS_MAC_STEP; | |
160 | reg_val |= CSR_HW_REV_DASH(mvm->trans->hw_rev) << | |
161 | CSR_HW_IF_CONFIG_REG_POS_MAC_DASH; | |
162 | ||
163 | /* radio configuration */ | |
164 | reg_val |= radio_cfg_type << CSR_HW_IF_CONFIG_REG_POS_PHY_TYPE; | |
165 | reg_val |= radio_cfg_step << CSR_HW_IF_CONFIG_REG_POS_PHY_STEP; | |
166 | reg_val |= radio_cfg_dash << CSR_HW_IF_CONFIG_REG_POS_PHY_DASH; | |
167 | ||
168 | WARN_ON((radio_cfg_type << CSR_HW_IF_CONFIG_REG_POS_PHY_TYPE) & | |
169 | ~CSR_HW_IF_CONFIG_REG_MSK_PHY_TYPE); | |
170 | ||
9b1fcc11 LK |
171 | /* |
172 | * TODO: Bits 7-8 of CSR in 8000 HW family set the ADC sampling, and | |
173 | * shouldn't be set to any non-zero value. The same is supposed to be | |
174 | * true of the other HW, but unsetting them (such as the 7260) causes | |
175 | * automatic tests to fail on seemingly unrelated errors. Need to | |
176 | * further investigate this, but for now we'll separate cases. | |
177 | */ | |
178 | if (mvm->trans->cfg->device_family != IWL_DEVICE_FAMILY_8000) | |
179 | reg_val |= CSR_HW_IF_CONFIG_REG_BIT_RADIO_SI; | |
8ca151b5 | 180 | |
e139dc4a LE |
181 | iwl_trans_set_bits_mask(mvm->trans, CSR_HW_IF_CONFIG_REG, |
182 | CSR_HW_IF_CONFIG_REG_MSK_MAC_DASH | | |
183 | CSR_HW_IF_CONFIG_REG_MSK_MAC_STEP | | |
184 | CSR_HW_IF_CONFIG_REG_MSK_PHY_TYPE | | |
185 | CSR_HW_IF_CONFIG_REG_MSK_PHY_STEP | | |
186 | CSR_HW_IF_CONFIG_REG_MSK_PHY_DASH | | |
187 | CSR_HW_IF_CONFIG_REG_BIT_RADIO_SI | | |
188 | CSR_HW_IF_CONFIG_REG_BIT_MAC_SI, | |
189 | reg_val); | |
8ca151b5 JB |
190 | |
191 | IWL_DEBUG_INFO(mvm, "Radio type=0x%x-0x%x-0x%x\n", radio_cfg_type, | |
192 | radio_cfg_step, radio_cfg_dash); | |
193 | ||
194 | /* | |
195 | * W/A : NIC is stuck in a reset state after Early PCIe power off | |
196 | * (PCIe power is lost before PERST# is asserted), causing ME FW | |
197 | * to lose ownership and not being able to obtain it back. | |
198 | */ | |
3073d8c0 EH |
199 | if (mvm->trans->cfg->device_family != IWL_DEVICE_FAMILY_8000) |
200 | iwl_set_bits_mask_prph(mvm->trans, APMG_PS_CTRL_REG, | |
201 | APMG_PS_CTRL_EARLY_PWR_OFF_RESET_DIS, | |
202 | ~APMG_PS_CTRL_EARLY_PWR_OFF_RESET_DIS); | |
8ca151b5 JB |
203 | } |
204 | ||
205 | struct iwl_rx_handlers { | |
206 | u8 cmd_id; | |
207 | bool async; | |
208 | int (*fn)(struct iwl_mvm *mvm, struct iwl_rx_cmd_buffer *rxb, | |
209 | struct iwl_device_cmd *cmd); | |
210 | }; | |
211 | ||
212 | #define RX_HANDLER(_cmd_id, _fn, _async) \ | |
213 | { .cmd_id = _cmd_id , .fn = _fn , .async = _async } | |
214 | ||
215 | /* | |
216 | * Handlers for fw notifications | |
217 | * Convention: RX_HANDLER(CMD_NAME, iwl_mvm_rx_CMD_NAME | |
218 | * This list should be in order of frequency for performance purposes. | |
219 | * | |
220 | * The handler can be SYNC - this means that it will be called in the Rx path | |
221 | * which can't acquire mvm->mutex. If the handler needs to hold mvm->mutex (and | |
222 | * only in this case!), it should be set as ASYNC. In that case, it will be | |
223 | * called from a worker with mvm->mutex held. | |
224 | */ | |
225 | static const struct iwl_rx_handlers iwl_mvm_rx_handlers[] = { | |
226 | RX_HANDLER(REPLY_RX_MPDU_CMD, iwl_mvm_rx_rx_mpdu, false), | |
227 | RX_HANDLER(REPLY_RX_PHY_CMD, iwl_mvm_rx_rx_phy_cmd, false), | |
228 | RX_HANDLER(TX_CMD, iwl_mvm_rx_tx_cmd, false), | |
229 | RX_HANDLER(BA_NOTIF, iwl_mvm_rx_ba_notif, false), | |
8ca151b5 | 230 | |
f421f9c3 | 231 | RX_HANDLER(BT_PROFILE_NOTIFICATION, iwl_mvm_rx_bt_coex_notif, true), |
bd3398e2 | 232 | RX_HANDLER(BEACON_NOTIFICATION, iwl_mvm_rx_beacon_notif, true), |
9ee718aa | 233 | RX_HANDLER(STATISTICS_NOTIFICATION, iwl_mvm_rx_statistics, true), |
b9fae2d5 EG |
234 | RX_HANDLER(ANTENNA_COUPLING_NOTIFICATION, |
235 | iwl_mvm_rx_ant_coupling_notif, true), | |
f421f9c3 | 236 | |
497b49d2 EG |
237 | RX_HANDLER(TIME_EVENT_NOTIFICATION, iwl_mvm_rx_time_event_notif, false), |
238 | ||
3e56eadf JB |
239 | RX_HANDLER(EOSP_NOTIFICATION, iwl_mvm_rx_eosp_notif, false), |
240 | ||
497b49d2 | 241 | RX_HANDLER(SCAN_REQUEST_CMD, iwl_mvm_rx_scan_response, false), |
91b80256 | 242 | RX_HANDLER(SCAN_COMPLETE_NOTIFICATION, iwl_mvm_rx_scan_complete, true), |
35a000b7 | 243 | RX_HANDLER(SCAN_OFFLOAD_COMPLETE, |
a6623e84 | 244 | iwl_mvm_rx_scan_offload_complete_notif, true), |
fb98be5e | 245 | RX_HANDLER(MATCH_FOUND_NOTIFICATION, iwl_mvm_rx_scan_offload_results, |
35a000b7 | 246 | false), |
497b49d2 | 247 | |
8ca151b5 JB |
248 | RX_HANDLER(RADIO_VERSION_NOTIFICATION, iwl_mvm_rx_radio_ver, false), |
249 | RX_HANDLER(CARD_STATE_NOTIFICATION, iwl_mvm_rx_card_state_notif, false), | |
250 | ||
d64048ed HG |
251 | RX_HANDLER(MISSED_BEACONS_NOTIFICATION, iwl_mvm_rx_missed_beacons_notif, |
252 | false), | |
253 | ||
8ca151b5 | 254 | RX_HANDLER(REPLY_ERROR, iwl_mvm_rx_fw_error, false), |
175a70b7 AB |
255 | RX_HANDLER(PSM_UAPSD_AP_MISBEHAVING_NOTIFICATION, |
256 | iwl_mvm_power_uapsd_misbehaving_ap_notif, false), | |
8ca151b5 JB |
257 | }; |
258 | #undef RX_HANDLER | |
259 | #define CMD(x) [x] = #x | |
260 | ||
e5209263 | 261 | static const char *const iwl_mvm_cmd_strings[REPLY_MAX] = { |
8ca151b5 JB |
262 | CMD(MVM_ALIVE), |
263 | CMD(REPLY_ERROR), | |
264 | CMD(INIT_COMPLETE_NOTIF), | |
265 | CMD(PHY_CONTEXT_CMD), | |
266 | CMD(MGMT_MCAST_KEY), | |
267 | CMD(TX_CMD), | |
268 | CMD(TXPATH_FLUSH), | |
269 | CMD(MAC_CONTEXT_CMD), | |
270 | CMD(TIME_EVENT_CMD), | |
271 | CMD(TIME_EVENT_NOTIFICATION), | |
272 | CMD(BINDING_CONTEXT_CMD), | |
273 | CMD(TIME_QUOTA_CMD), | |
4ac6cb59 | 274 | CMD(NON_QOS_TX_COUNTER_CMD), |
8ca151b5 JB |
275 | CMD(RADIO_VERSION_NOTIFICATION), |
276 | CMD(SCAN_REQUEST_CMD), | |
277 | CMD(SCAN_ABORT_CMD), | |
278 | CMD(SCAN_START_NOTIFICATION), | |
279 | CMD(SCAN_RESULTS_NOTIFICATION), | |
280 | CMD(SCAN_COMPLETE_NOTIFICATION), | |
281 | CMD(NVM_ACCESS_CMD), | |
282 | CMD(PHY_CONFIGURATION_CMD), | |
283 | CMD(CALIB_RES_NOTIF_PHY_DB), | |
284 | CMD(SET_CALIB_DEFAULT_CMD), | |
285 | CMD(CALIBRATION_COMPLETE_NOTIFICATION), | |
5a258aae | 286 | CMD(ADD_STA_KEY), |
8ca151b5 JB |
287 | CMD(ADD_STA), |
288 | CMD(REMOVE_STA), | |
289 | CMD(LQ_CMD), | |
290 | CMD(SCAN_OFFLOAD_CONFIG_CMD), | |
35a000b7 | 291 | CMD(MATCH_FOUND_NOTIFICATION), |
8ca151b5 JB |
292 | CMD(SCAN_OFFLOAD_REQUEST_CMD), |
293 | CMD(SCAN_OFFLOAD_ABORT_CMD), | |
b112889c | 294 | CMD(HOT_SPOT_CMD), |
8ca151b5 JB |
295 | CMD(SCAN_OFFLOAD_COMPLETE), |
296 | CMD(SCAN_OFFLOAD_UPDATE_PROFILES_CMD), | |
fb98be5e | 297 | CMD(SCAN_ITERATION_COMPLETE), |
8ca151b5 JB |
298 | CMD(POWER_TABLE_CMD), |
299 | CMD(WEP_KEY), | |
300 | CMD(REPLY_RX_PHY_CMD), | |
301 | CMD(REPLY_RX_MPDU_CMD), | |
571765c8 | 302 | CMD(BEACON_NOTIFICATION), |
8ca151b5 JB |
303 | CMD(BEACON_TEMPLATE_CMD), |
304 | CMD(STATISTICS_NOTIFICATION), | |
3e56eadf | 305 | CMD(EOSP_NOTIFICATION), |
88f2fd73 | 306 | CMD(REDUCE_TX_POWER_CMD), |
8ca151b5 JB |
307 | CMD(TX_ANT_CONFIGURATION_CMD), |
308 | CMD(D3_CONFIG_CMD), | |
98ee7783 | 309 | CMD(D0I3_END_CMD), |
8ca151b5 JB |
310 | CMD(PROT_OFFLOAD_CONFIG_CMD), |
311 | CMD(OFFLOADS_QUERY_CMD), | |
312 | CMD(REMOTE_WAKE_CONFIG_CMD), | |
313 | CMD(WOWLAN_PATTERNS), | |
314 | CMD(WOWLAN_CONFIGURATION), | |
315 | CMD(WOWLAN_TSC_RSC_PARAM), | |
316 | CMD(WOWLAN_TKIP_PARAM), | |
317 | CMD(WOWLAN_KEK_KCK_MATERIAL), | |
318 | CMD(WOWLAN_GET_STATUSES), | |
319 | CMD(WOWLAN_TX_POWER_PER_DB), | |
320 | CMD(NET_DETECT_CONFIG_CMD), | |
321 | CMD(NET_DETECT_PROFILES_QUERY_CMD), | |
322 | CMD(NET_DETECT_PROFILES_CMD), | |
323 | CMD(NET_DETECT_HOTSPOTS_CMD), | |
324 | CMD(NET_DETECT_HOTSPOTS_QUERY_CMD), | |
3b4612fb | 325 | CMD(CARD_STATE_NOTIFICATION), |
d64048ed | 326 | CMD(MISSED_BEACONS_NOTIFICATION), |
fb3ceb81 EG |
327 | CMD(BT_COEX_PRIO_TABLE), |
328 | CMD(BT_COEX_PROT_ENV), | |
329 | CMD(BT_PROFILE_NOTIFICATION), | |
330 | CMD(BT_CONFIG), | |
51b6b9e0 | 331 | CMD(MCAST_FILTER_CMD), |
c87163b9 | 332 | CMD(BCAST_FILTER_CMD), |
7a06a38a | 333 | CMD(REPLY_SF_CFG_CMD), |
7df15b1e | 334 | CMD(REPLY_BEACON_FILTERING_CMD), |
a0a09243 LC |
335 | CMD(CMD_DTS_MEASUREMENT_TRIGGER), |
336 | CMD(DTS_MEASUREMENT_NOTIFICATION), | |
9ee718aa | 337 | CMD(REPLY_THERMAL_MNG_BACKOFF), |
e811ada7 | 338 | CMD(MAC_PM_POWER_TABLE), |
9180ac50 | 339 | CMD(LTR_CONFIG), |
dac94da8 | 340 | CMD(BT_COEX_CI), |
430a3bba EG |
341 | CMD(BT_COEX_UPDATE_SW_BOOST), |
342 | CMD(BT_COEX_UPDATE_CORUN_LUT), | |
343 | CMD(BT_COEX_UPDATE_REDUCED_TXP), | |
175a70b7 | 344 | CMD(PSM_UAPSD_AP_MISBEHAVING_NOTIFICATION), |
b9fae2d5 | 345 | CMD(ANTENNA_COUPLING_NOTIFICATION), |
3edf8ff6 | 346 | CMD(SCD_QUEUE_CFG), |
8ca151b5 JB |
347 | }; |
348 | #undef CMD | |
349 | ||
350 | /* this forward declaration can avoid to export the function */ | |
351 | static void iwl_mvm_async_handlers_wk(struct work_struct *wk); | |
37577fe2 | 352 | static void iwl_mvm_d0i3_exit_work(struct work_struct *wk); |
8ca151b5 | 353 | |
0c0e2c71 IY |
354 | static u32 calc_min_backoff(struct iwl_trans *trans, const struct iwl_cfg *cfg) |
355 | { | |
356 | const struct iwl_pwr_tx_backoff *pwr_tx_backoff = cfg->pwr_tx_backoffs; | |
357 | ||
358 | if (!pwr_tx_backoff) | |
359 | return 0; | |
360 | ||
361 | while (pwr_tx_backoff->pwr) { | |
362 | if (trans->dflt_pwr_limit >= pwr_tx_backoff->pwr) | |
363 | return pwr_tx_backoff->backoff; | |
364 | ||
365 | pwr_tx_backoff++; | |
366 | } | |
367 | ||
368 | return 0; | |
369 | } | |
370 | ||
4bfa47f3 EG |
371 | static void iwl_mvm_fw_error_dump_wk(struct work_struct *work); |
372 | ||
8ca151b5 JB |
373 | static struct iwl_op_mode * |
374 | iwl_op_mode_mvm_start(struct iwl_trans *trans, const struct iwl_cfg *cfg, | |
375 | const struct iwl_fw *fw, struct dentry *dbgfs_dir) | |
376 | { | |
377 | struct ieee80211_hw *hw; | |
378 | struct iwl_op_mode *op_mode; | |
379 | struct iwl_mvm *mvm; | |
380 | struct iwl_trans_config trans_cfg = {}; | |
381 | static const u8 no_reclaim_cmds[] = { | |
382 | TX_CMD, | |
383 | }; | |
384 | int err, scan_size; | |
0c0e2c71 | 385 | u32 min_backoff; |
8ca151b5 | 386 | |
c4d83271 EG |
387 | /* |
388 | * We use IWL_MVM_STATION_COUNT to check the validity of the station | |
389 | * index all over the driver - check that its value corresponds to the | |
390 | * array size. | |
391 | */ | |
392 | BUILD_BUG_ON(ARRAY_SIZE(mvm->fw_id_to_mac_id) != IWL_MVM_STATION_COUNT); | |
393 | ||
8ca151b5 JB |
394 | /******************************** |
395 | * 1. Allocating and configuring HW data | |
396 | ********************************/ | |
397 | hw = ieee80211_alloc_hw(sizeof(struct iwl_op_mode) + | |
398 | sizeof(struct iwl_mvm), | |
399 | &iwl_mvm_hw_ops); | |
400 | if (!hw) | |
401 | return NULL; | |
402 | ||
745160ee OG |
403 | if (cfg->max_rx_agg_size) |
404 | hw->max_rx_aggregation_subframes = cfg->max_rx_agg_size; | |
405 | ||
77d96730 GG |
406 | if (cfg->max_tx_agg_size) |
407 | hw->max_tx_aggregation_subframes = cfg->max_tx_agg_size; | |
408 | ||
8ca151b5 JB |
409 | op_mode = hw->priv; |
410 | op_mode->ops = &iwl_mvm_ops; | |
8ca151b5 JB |
411 | |
412 | mvm = IWL_OP_MODE_GET_MVM(op_mode); | |
413 | mvm->dev = trans->dev; | |
414 | mvm->trans = trans; | |
415 | mvm->cfg = cfg; | |
416 | mvm->fw = fw; | |
417 | mvm->hw = hw; | |
418 | ||
291aa7c4 EH |
419 | mvm->restart_fw = iwlwifi_mod_params.restart_fw ? -1 : 0; |
420 | ||
19e737c9 EL |
421 | mvm->aux_queue = 15; |
422 | mvm->first_agg_queue = 16; | |
423 | mvm->last_agg_queue = mvm->cfg->base_params->num_of_queues - 1; | |
424 | if (mvm->cfg->base_params->num_of_queues == 16) { | |
425 | mvm->aux_queue = 11; | |
426 | mvm->first_agg_queue = 12; | |
427 | } | |
1f3b0ff8 | 428 | mvm->sf_state = SF_UNINIT; |
ddfc1593 | 429 | mvm->low_latency_agg_frame_limit = 6; |
19e737c9 | 430 | |
8ca151b5 | 431 | mutex_init(&mvm->mutex); |
d15a747f | 432 | mutex_init(&mvm->d0i3_suspend_mutex); |
8ca151b5 JB |
433 | spin_lock_init(&mvm->async_handlers_lock); |
434 | INIT_LIST_HEAD(&mvm->time_event_list); | |
b112889c | 435 | INIT_LIST_HEAD(&mvm->aux_roc_te_list); |
8ca151b5 JB |
436 | INIT_LIST_HEAD(&mvm->async_handlers_list); |
437 | spin_lock_init(&mvm->time_event_lock); | |
438 | ||
439 | INIT_WORK(&mvm->async_handlers_wk, iwl_mvm_async_handlers_wk); | |
440 | INIT_WORK(&mvm->roc_done_wk, iwl_mvm_roc_done_wk); | |
441 | INIT_WORK(&mvm->sta_drained_wk, iwl_mvm_sta_drained_wk); | |
37577fe2 | 442 | INIT_WORK(&mvm->d0i3_exit_work, iwl_mvm_d0i3_exit_work); |
4bfa47f3 | 443 | INIT_WORK(&mvm->fw_error_dump_wk, iwl_mvm_fw_error_dump_wk); |
8ca151b5 | 444 | |
b2492501 | 445 | spin_lock_init(&mvm->d0i3_tx_lock); |
576eeee9 | 446 | spin_lock_init(&mvm->refs_lock); |
b2492501 AN |
447 | skb_queue_head_init(&mvm->d0i3_tx); |
448 | init_waitqueue_head(&mvm->d0i3_exit_waitq); | |
449 | ||
8ca151b5 JB |
450 | SET_IEEE80211_DEV(mvm->hw, mvm->trans->dev); |
451 | ||
452 | /* | |
453 | * Populate the state variables that the transport layer needs | |
454 | * to know about. | |
455 | */ | |
456 | trans_cfg.op_mode = op_mode; | |
457 | trans_cfg.no_reclaim_cmds = no_reclaim_cmds; | |
458 | trans_cfg.n_no_reclaim_cmds = ARRAY_SIZE(no_reclaim_cmds); | |
459 | trans_cfg.rx_buf_size_8k = iwlwifi_mod_params.amsdu_size_8K; | |
460 | ||
25b9ea5c | 461 | if (mvm->fw->ucode_capa.flags & IWL_UCODE_TLV_FLAGS_DW_BC_TABLE) |
8ca151b5 JB |
462 | trans_cfg.bc_table_dword = true; |
463 | ||
464 | if (!iwlwifi_mod_params.wd_disable) | |
465 | trans_cfg.queue_watchdog_timeout = cfg->base_params->wd_timeout; | |
466 | else | |
467 | trans_cfg.queue_watchdog_timeout = IWL_WATCHDOG_DISABLED; | |
468 | ||
469 | trans_cfg.command_names = iwl_mvm_cmd_strings; | |
470 | ||
471 | trans_cfg.cmd_queue = IWL_MVM_CMD_QUEUE; | |
b2d81db7 | 472 | trans_cfg.cmd_fifo = IWL_MVM_TX_FIFO_CMD; |
3a736bcb | 473 | trans_cfg.scd_set_active = true; |
8ca151b5 JB |
474 | |
475 | snprintf(mvm->hw->wiphy->fw_version, | |
476 | sizeof(mvm->hw->wiphy->fw_version), | |
477 | "%s", fw->fw_version); | |
478 | ||
479 | /* Configure transport layer */ | |
480 | iwl_trans_configure(mvm->trans, &trans_cfg); | |
481 | ||
482 | trans->rx_mpdu_cmd = REPLY_RX_MPDU_CMD; | |
483 | trans->rx_mpdu_cmd_hdr_size = sizeof(struct iwl_rx_mpdu_res_start); | |
484 | ||
485 | /* set up notification wait support */ | |
486 | iwl_notification_wait_init(&mvm->notif_wait); | |
487 | ||
488 | /* Init phy db */ | |
489 | mvm->phy_db = iwl_phy_db_init(trans); | |
490 | if (!mvm->phy_db) { | |
491 | IWL_ERR(mvm, "Cannot init phy_db\n"); | |
492 | goto out_free; | |
493 | } | |
494 | ||
495 | IWL_INFO(mvm, "Detected %s, REV=0x%X\n", | |
496 | mvm->cfg->name, mvm->trans->hw_rev); | |
497 | ||
0c0e2c71 IY |
498 | min_backoff = calc_min_backoff(trans, cfg); |
499 | iwl_mvm_tt_initialize(mvm, min_backoff); | |
e02a9d60 EH |
500 | /* set the nvm_file_name according to priority */ |
501 | if (iwlwifi_mod_params.nvm_file) | |
502 | mvm->nvm_file_name = iwlwifi_mod_params.nvm_file; | |
503 | else | |
504 | mvm->nvm_file_name = mvm->cfg->default_nvm_file; | |
9ee718aa | 505 | |
e02a9d60 | 506 | if (WARN(cfg->no_power_up_nic_in_init && !mvm->nvm_file_name, |
14b485f0 EH |
507 | "not allowing power-up and not having nvm_file\n")) |
508 | goto out_free; | |
509 | ||
81a67e32 | 510 | /* |
0ade579c | 511 | * Even if nvm exists in the nvm_file driver should read again the nvm |
14b485f0 EH |
512 | * from the nic because there might be entries that exist in the OTP |
513 | * and not in the file. | |
514 | * for nics with no_power_up_nic_in_init: rely completley on nvm_file | |
81a67e32 | 515 | */ |
e02a9d60 | 516 | if (cfg->no_power_up_nic_in_init && mvm->nvm_file_name) { |
14b485f0 | 517 | err = iwl_nvm_init(mvm, false); |
8c678ed4 EP |
518 | if (err) |
519 | goto out_free; | |
81a67e32 EL |
520 | } else { |
521 | err = iwl_trans_start_hw(mvm->trans); | |
522 | if (err) | |
523 | goto out_free; | |
524 | ||
525 | mutex_lock(&mvm->mutex); | |
526 | err = iwl_run_init_mvm_ucode(mvm, true); | |
a4082843 | 527 | iwl_trans_stop_device(trans); |
81a67e32 EL |
528 | mutex_unlock(&mvm->mutex); |
529 | /* returns 0 if successful, 1 if success but in rfkill */ | |
530 | if (err < 0 && !iwlmvm_mod_params.init_dbg) { | |
531 | IWL_ERR(mvm, "Failed to run INIT ucode: %d\n", err); | |
532 | goto out_free; | |
533 | } | |
8ca151b5 JB |
534 | } |
535 | ||
fb98be5e DS |
536 | if (mvm->fw->ucode_capa.api[0] & IWL_UCODE_TLV_API_LMAC_SCAN) |
537 | scan_size = sizeof(struct iwl_scan_req_unified_lmac) + | |
538 | sizeof(struct iwl_scan_channel_cfg_lmac) * | |
539 | mvm->fw->ucode_capa.n_scan_channels + | |
540 | sizeof(struct iwl_scan_probe_req); | |
541 | else | |
542 | scan_size = sizeof(struct iwl_scan_cmd) + | |
543 | mvm->fw->ucode_capa.max_probe_length + | |
544 | mvm->fw->ucode_capa.n_scan_channels * | |
545 | sizeof(struct iwl_scan_channel); | |
546 | ||
8ca151b5 JB |
547 | mvm->scan_cmd = kmalloc(scan_size, GFP_KERNEL); |
548 | if (!mvm->scan_cmd) | |
549 | goto out_free; | |
550 | ||
551 | err = iwl_mvm_mac_setup_register(mvm); | |
552 | if (err) | |
553 | goto out_free; | |
554 | ||
555 | err = iwl_mvm_dbgfs_register(mvm, dbgfs_dir); | |
556 | if (err) | |
557 | goto out_unregister; | |
558 | ||
3848ab66 MG |
559 | memset(&mvm->rx_stats, 0, sizeof(struct mvm_statistics_rx)); |
560 | ||
7498cf4c | 561 | /* rpm starts with a taken ref. only set the appropriate bit here. */ |
576eeee9 | 562 | mvm->refs[IWL_MVM_REF_UCODE_DOWN] = 1; |
7498cf4c | 563 | |
8ca151b5 JB |
564 | return op_mode; |
565 | ||
566 | out_unregister: | |
567 | ieee80211_unregister_hw(mvm->hw); | |
91b0d119 | 568 | iwl_mvm_leds_exit(mvm); |
8ca151b5 JB |
569 | out_free: |
570 | iwl_phy_db_free(mvm->phy_db); | |
571 | kfree(mvm->scan_cmd); | |
e02a9d60 | 572 | if (!cfg->no_power_up_nic_in_init || !mvm->nvm_file_name) |
a4082843 | 573 | iwl_trans_op_mode_leave(trans); |
8ca151b5 JB |
574 | ieee80211_free_hw(mvm->hw); |
575 | return NULL; | |
576 | } | |
577 | ||
578 | static void iwl_op_mode_mvm_stop(struct iwl_op_mode *op_mode) | |
579 | { | |
580 | struct iwl_mvm *mvm = IWL_OP_MODE_GET_MVM(op_mode); | |
581 | int i; | |
582 | ||
583 | iwl_mvm_leds_exit(mvm); | |
584 | ||
9ee718aa EL |
585 | iwl_mvm_tt_exit(mvm); |
586 | ||
8ca151b5 JB |
587 | ieee80211_unregister_hw(mvm->hw); |
588 | ||
589 | kfree(mvm->scan_cmd); | |
48eb7b34 EG |
590 | if (mvm->fw_error_dump) { |
591 | vfree(mvm->fw_error_dump->op_mode_ptr); | |
592 | vfree(mvm->fw_error_dump->trans_ptr); | |
593 | kfree(mvm->fw_error_dump); | |
594 | } | |
e59647ea EP |
595 | kfree(mvm->mcast_filter_cmd); |
596 | mvm->mcast_filter_cmd = NULL; | |
8ca151b5 | 597 | |
afc66bb7 JB |
598 | #if defined(CONFIG_PM_SLEEP) && defined(CONFIG_IWLWIFI_DEBUGFS) |
599 | kfree(mvm->d3_resume_sram); | |
3c2f3b20 LC |
600 | if (mvm->nd_config) { |
601 | kfree(mvm->nd_config->match_sets); | |
602 | kfree(mvm->nd_config); | |
603 | mvm->nd_config = NULL; | |
604 | kfree(mvm->nd_ies); | |
605 | mvm->nd_ies = NULL; | |
606 | } | |
afc66bb7 JB |
607 | #endif |
608 | ||
a4082843 | 609 | iwl_trans_op_mode_leave(mvm->trans); |
8ca151b5 JB |
610 | |
611 | iwl_phy_db_free(mvm->phy_db); | |
612 | mvm->phy_db = NULL; | |
613 | ||
8ca151b5 | 614 | iwl_free_nvm_data(mvm->nvm_data); |
ae2b21b0 | 615 | for (i = 0; i < NVM_MAX_NUM_SECTIONS; i++) |
8ca151b5 JB |
616 | kfree(mvm->nvm_sections[i].data); |
617 | ||
618 | ieee80211_free_hw(mvm->hw); | |
619 | } | |
620 | ||
621 | struct iwl_async_handler_entry { | |
622 | struct list_head list; | |
623 | struct iwl_rx_cmd_buffer rxb; | |
624 | int (*fn)(struct iwl_mvm *mvm, struct iwl_rx_cmd_buffer *rxb, | |
625 | struct iwl_device_cmd *cmd); | |
626 | }; | |
627 | ||
628 | void iwl_mvm_async_handlers_purge(struct iwl_mvm *mvm) | |
629 | { | |
630 | struct iwl_async_handler_entry *entry, *tmp; | |
631 | ||
632 | spin_lock_bh(&mvm->async_handlers_lock); | |
633 | list_for_each_entry_safe(entry, tmp, &mvm->async_handlers_list, list) { | |
634 | iwl_free_rxb(&entry->rxb); | |
635 | list_del(&entry->list); | |
636 | kfree(entry); | |
637 | } | |
638 | spin_unlock_bh(&mvm->async_handlers_lock); | |
639 | } | |
640 | ||
641 | static void iwl_mvm_async_handlers_wk(struct work_struct *wk) | |
642 | { | |
643 | struct iwl_mvm *mvm = | |
644 | container_of(wk, struct iwl_mvm, async_handlers_wk); | |
645 | struct iwl_async_handler_entry *entry, *tmp; | |
646 | struct list_head local_list; | |
647 | ||
648 | INIT_LIST_HEAD(&local_list); | |
649 | ||
650 | /* Ensure that we are not in stop flow (check iwl_mvm_mac_stop) */ | |
651 | mutex_lock(&mvm->mutex); | |
652 | ||
653 | /* | |
654 | * Sync with Rx path with a lock. Remove all the entries from this list, | |
655 | * add them to a local one (lock free), and then handle them. | |
656 | */ | |
657 | spin_lock_bh(&mvm->async_handlers_lock); | |
658 | list_splice_init(&mvm->async_handlers_list, &local_list); | |
659 | spin_unlock_bh(&mvm->async_handlers_lock); | |
660 | ||
661 | list_for_each_entry_safe(entry, tmp, &local_list, list) { | |
662 | if (entry->fn(mvm, &entry->rxb, NULL)) | |
663 | IWL_WARN(mvm, | |
664 | "returned value from ASYNC handlers are ignored\n"); | |
665 | iwl_free_rxb(&entry->rxb); | |
666 | list_del(&entry->list); | |
667 | kfree(entry); | |
668 | } | |
669 | mutex_unlock(&mvm->mutex); | |
670 | } | |
671 | ||
672 | static int iwl_mvm_rx_dispatch(struct iwl_op_mode *op_mode, | |
673 | struct iwl_rx_cmd_buffer *rxb, | |
674 | struct iwl_device_cmd *cmd) | |
675 | { | |
676 | struct iwl_rx_packet *pkt = rxb_addr(rxb); | |
677 | struct iwl_mvm *mvm = IWL_OP_MODE_GET_MVM(op_mode); | |
678 | u8 i; | |
679 | ||
680 | /* | |
681 | * Do the notification wait before RX handlers so | |
682 | * even if the RX handler consumes the RXB we have | |
683 | * access to it in the notification wait entry. | |
684 | */ | |
685 | iwl_notification_wait_notify(&mvm->notif_wait, pkt); | |
686 | ||
687 | for (i = 0; i < ARRAY_SIZE(iwl_mvm_rx_handlers); i++) { | |
688 | const struct iwl_rx_handlers *rx_h = &iwl_mvm_rx_handlers[i]; | |
36eed56a EG |
689 | struct iwl_async_handler_entry *entry; |
690 | ||
691 | if (rx_h->cmd_id != pkt->hdr.cmd) | |
692 | continue; | |
693 | ||
694 | if (!rx_h->async) | |
695 | return rx_h->fn(mvm, rxb, cmd); | |
696 | ||
697 | entry = kzalloc(sizeof(*entry), GFP_ATOMIC); | |
698 | /* we can't do much... */ | |
699 | if (!entry) | |
700 | return 0; | |
701 | ||
702 | entry->rxb._page = rxb_steal_page(rxb); | |
703 | entry->rxb._offset = rxb->_offset; | |
704 | entry->rxb._rx_page_order = rxb->_rx_page_order; | |
705 | entry->fn = rx_h->fn; | |
706 | spin_lock(&mvm->async_handlers_lock); | |
707 | list_add_tail(&entry->list, &mvm->async_handlers_list); | |
708 | spin_unlock(&mvm->async_handlers_lock); | |
709 | schedule_work(&mvm->async_handlers_wk); | |
710 | break; | |
8ca151b5 JB |
711 | } |
712 | ||
713 | return 0; | |
714 | } | |
715 | ||
716 | static void iwl_mvm_stop_sw_queue(struct iwl_op_mode *op_mode, int queue) | |
717 | { | |
718 | struct iwl_mvm *mvm = IWL_OP_MODE_GET_MVM(op_mode); | |
719 | int mq = mvm->queue_to_mac80211[queue]; | |
720 | ||
721 | if (WARN_ON_ONCE(mq == IWL_INVALID_MAC80211_QUEUE)) | |
722 | return; | |
723 | ||
df197c00 | 724 | if (atomic_inc_return(&mvm->mac80211_queue_stop_count[mq]) > 1) { |
8ca151b5 JB |
725 | IWL_DEBUG_TX_QUEUES(mvm, |
726 | "queue %d (mac80211 %d) already stopped\n", | |
727 | queue, mq); | |
728 | return; | |
729 | } | |
730 | ||
8ca151b5 JB |
731 | ieee80211_stop_queue(mvm->hw, mq); |
732 | } | |
733 | ||
734 | static void iwl_mvm_wake_sw_queue(struct iwl_op_mode *op_mode, int queue) | |
735 | { | |
736 | struct iwl_mvm *mvm = IWL_OP_MODE_GET_MVM(op_mode); | |
737 | int mq = mvm->queue_to_mac80211[queue]; | |
738 | ||
739 | if (WARN_ON_ONCE(mq == IWL_INVALID_MAC80211_QUEUE)) | |
740 | return; | |
741 | ||
df197c00 | 742 | if (atomic_dec_return(&mvm->mac80211_queue_stop_count[mq]) > 0) { |
8ca151b5 | 743 | IWL_DEBUG_TX_QUEUES(mvm, |
df197c00 | 744 | "queue %d (mac80211 %d) still stopped\n", |
8ca151b5 JB |
745 | queue, mq); |
746 | return; | |
747 | } | |
748 | ||
8ca151b5 JB |
749 | ieee80211_wake_queue(mvm->hw, mq); |
750 | } | |
751 | ||
9ee718aa EL |
752 | void iwl_mvm_set_hw_ctkill_state(struct iwl_mvm *mvm, bool state) |
753 | { | |
754 | if (state) | |
755 | set_bit(IWL_MVM_STATUS_HW_CTKILL, &mvm->status); | |
756 | else | |
757 | clear_bit(IWL_MVM_STATUS_HW_CTKILL, &mvm->status); | |
758 | ||
759 | wiphy_rfkill_set_hw_state(mvm->hw->wiphy, iwl_mvm_is_radio_killed(mvm)); | |
760 | } | |
761 | ||
14cfca71 | 762 | static bool iwl_mvm_set_hw_rfkill_state(struct iwl_op_mode *op_mode, bool state) |
8ca151b5 JB |
763 | { |
764 | struct iwl_mvm *mvm = IWL_OP_MODE_GET_MVM(op_mode); | |
765 | ||
766 | if (state) | |
767 | set_bit(IWL_MVM_STATUS_HW_RFKILL, &mvm->status); | |
768 | else | |
769 | clear_bit(IWL_MVM_STATUS_HW_RFKILL, &mvm->status); | |
770 | ||
9ee718aa | 771 | wiphy_rfkill_set_hw_state(mvm->hw->wiphy, iwl_mvm_is_radio_killed(mvm)); |
14cfca71 JB |
772 | |
773 | return state && mvm->cur_ucode != IWL_UCODE_INIT; | |
8ca151b5 JB |
774 | } |
775 | ||
776 | static void iwl_mvm_free_skb(struct iwl_op_mode *op_mode, struct sk_buff *skb) | |
777 | { | |
778 | struct iwl_mvm *mvm = IWL_OP_MODE_GET_MVM(op_mode); | |
779 | struct ieee80211_tx_info *info; | |
780 | ||
781 | info = IEEE80211_SKB_CB(skb); | |
782 | iwl_trans_free_tx_cmd(mvm->trans, info->driver_data[1]); | |
783 | ieee80211_free_txskb(mvm->hw, skb); | |
784 | } | |
785 | ||
ac1ed416 JB |
786 | struct iwl_mvm_reprobe { |
787 | struct device *dev; | |
788 | struct work_struct work; | |
789 | }; | |
790 | ||
791 | static void iwl_mvm_reprobe_wk(struct work_struct *wk) | |
792 | { | |
793 | struct iwl_mvm_reprobe *reprobe; | |
794 | ||
795 | reprobe = container_of(wk, struct iwl_mvm_reprobe, work); | |
796 | if (device_reprobe(reprobe->dev)) | |
797 | dev_err(reprobe->dev, "reprobe failed!\n"); | |
798 | kfree(reprobe); | |
799 | module_put(THIS_MODULE); | |
800 | } | |
801 | ||
4bfa47f3 EG |
802 | static void iwl_mvm_fw_error_dump_wk(struct work_struct *work) |
803 | { | |
804 | struct iwl_mvm *mvm = | |
805 | container_of(work, struct iwl_mvm, fw_error_dump_wk); | |
806 | ||
807 | mutex_lock(&mvm->mutex); | |
808 | iwl_mvm_fw_error_dump(mvm); | |
809 | mutex_unlock(&mvm->mutex); | |
810 | } | |
811 | ||
b08c1d97 | 812 | void iwl_mvm_nic_restart(struct iwl_mvm *mvm, bool fw_error) |
8ca151b5 | 813 | { |
8ca151b5 JB |
814 | iwl_abort_notification_waits(&mvm->notif_wait); |
815 | ||
992f81fc DS |
816 | /* |
817 | * This is a bit racy, but worst case we tell mac80211 about | |
818 | * a stopped/aborted scan when that was already done which | |
819 | * is not a problem. It is necessary to abort any os scan | |
820 | * here because mac80211 requires having the scan cleared | |
821 | * before restarting. | |
822 | * We'll reset the scan_status to NONE in restart cleanup in | |
823 | * the next start() call from mac80211. If restart isn't called | |
824 | * (no fw restart) scan status will stay busy. | |
825 | */ | |
826 | switch (mvm->scan_status) { | |
827 | case IWL_MVM_SCAN_NONE: | |
828 | break; | |
829 | case IWL_MVM_SCAN_OS: | |
830 | ieee80211_scan_completed(mvm->hw, true); | |
831 | break; | |
832 | case IWL_MVM_SCAN_SCHED: | |
833 | /* Sched scan will be restarted by mac80211 in restart_hw. */ | |
834 | if (!mvm->restart_fw) | |
835 | ieee80211_sched_scan_stopped(mvm->hw); | |
836 | break; | |
837 | } | |
838 | ||
8ca151b5 JB |
839 | /* |
840 | * If we're restarting already, don't cycle restarts. | |
841 | * If INIT fw asserted, it will likely fail again. | |
842 | * If WoWLAN fw asserted, don't restart either, mac80211 | |
843 | * can't recover this since we're already half suspended. | |
844 | */ | |
845 | if (test_and_set_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status)) { | |
ac1ed416 JB |
846 | struct iwl_mvm_reprobe *reprobe; |
847 | ||
848 | IWL_ERR(mvm, | |
849 | "Firmware error during reconfiguration - reprobe!\n"); | |
850 | ||
851 | /* | |
852 | * get a module reference to avoid doing this while unloading | |
853 | * anyway and to avoid scheduling a work with code that's | |
854 | * being removed. | |
855 | */ | |
856 | if (!try_module_get(THIS_MODULE)) { | |
857 | IWL_ERR(mvm, "Module is being unloaded - abort\n"); | |
858 | return; | |
859 | } | |
860 | ||
861 | reprobe = kzalloc(sizeof(*reprobe), GFP_ATOMIC); | |
862 | if (!reprobe) { | |
863 | module_put(THIS_MODULE); | |
864 | return; | |
865 | } | |
866 | reprobe->dev = mvm->trans->dev; | |
867 | INIT_WORK(&reprobe->work, iwl_mvm_reprobe_wk); | |
868 | schedule_work(&reprobe->work); | |
b08c1d97 LC |
869 | } else if (mvm->cur_ucode == IWL_UCODE_REGULAR && |
870 | (!fw_error || mvm->restart_fw)) { | |
7498cf4c EP |
871 | /* don't let the transport/FW power down */ |
872 | iwl_mvm_ref(mvm, IWL_MVM_REF_UCODE_DOWN); | |
873 | ||
b08c1d97 | 874 | if (fw_error && mvm->restart_fw > 0) |
291aa7c4 | 875 | mvm->restart_fw--; |
8ca151b5 | 876 | ieee80211_restart_hw(mvm->hw); |
4bfa47f3 EG |
877 | } else if (fw_error) { |
878 | schedule_work(&mvm->fw_error_dump_wk); | |
8ca151b5 JB |
879 | } |
880 | } | |
881 | ||
715c998f EG |
882 | static void iwl_mvm_nic_error(struct iwl_op_mode *op_mode) |
883 | { | |
884 | struct iwl_mvm *mvm = IWL_OP_MODE_GET_MVM(op_mode); | |
885 | ||
886 | iwl_mvm_dump_nic_error_log(mvm); | |
1bd3cbc1 | 887 | |
b08c1d97 | 888 | iwl_mvm_nic_restart(mvm, true); |
715c998f EG |
889 | } |
890 | ||
8ca151b5 JB |
891 | static void iwl_mvm_cmd_queue_full(struct iwl_op_mode *op_mode) |
892 | { | |
715c998f EG |
893 | struct iwl_mvm *mvm = IWL_OP_MODE_GET_MVM(op_mode); |
894 | ||
8ca151b5 | 895 | WARN_ON(1); |
b08c1d97 | 896 | iwl_mvm_nic_restart(mvm, true); |
8ca151b5 JB |
897 | } |
898 | ||
37577fe2 EP |
899 | struct iwl_d0i3_iter_data { |
900 | struct iwl_mvm *mvm; | |
901 | u8 ap_sta_id; | |
902 | u8 vif_count; | |
b2492501 AN |
903 | u8 offloading_tid; |
904 | bool disable_offloading; | |
37577fe2 EP |
905 | }; |
906 | ||
b2492501 AN |
907 | static bool iwl_mvm_disallow_offloading(struct iwl_mvm *mvm, |
908 | struct ieee80211_vif *vif, | |
909 | struct iwl_d0i3_iter_data *iter_data) | |
910 | { | |
911 | struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); | |
912 | struct ieee80211_sta *ap_sta; | |
913 | struct iwl_mvm_sta *mvmsta; | |
914 | u32 available_tids = 0; | |
915 | u8 tid; | |
916 | ||
917 | if (WARN_ON(vif->type != NL80211_IFTYPE_STATION || | |
918 | mvmvif->ap_sta_id == IWL_MVM_STATION_COUNT)) | |
919 | return false; | |
920 | ||
921 | ap_sta = rcu_dereference(mvm->fw_id_to_mac_id[mvmvif->ap_sta_id]); | |
922 | if (IS_ERR_OR_NULL(ap_sta)) | |
923 | return false; | |
924 | ||
925 | mvmsta = iwl_mvm_sta_from_mac80211(ap_sta); | |
926 | spin_lock_bh(&mvmsta->lock); | |
927 | for (tid = 0; tid < IWL_MAX_TID_COUNT; tid++) { | |
928 | struct iwl_mvm_tid_data *tid_data = &mvmsta->tid_data[tid]; | |
929 | ||
930 | /* | |
931 | * in case of pending tx packets, don't use this tid | |
932 | * for offloading in order to prevent reuse of the same | |
933 | * qos seq counters. | |
934 | */ | |
935 | if (iwl_mvm_tid_queued(tid_data)) | |
936 | continue; | |
937 | ||
938 | if (tid_data->state != IWL_AGG_OFF) | |
939 | continue; | |
940 | ||
941 | available_tids |= BIT(tid); | |
942 | } | |
943 | spin_unlock_bh(&mvmsta->lock); | |
944 | ||
945 | /* | |
946 | * disallow protocol offloading if we have no available tid | |
947 | * (with no pending frames and no active aggregation, | |
948 | * as we don't handle "holes" properly - the scheduler needs the | |
949 | * frame's seq number and TFD index to match) | |
950 | */ | |
951 | if (!available_tids) | |
952 | return true; | |
953 | ||
954 | /* for simplicity, just use the first available tid */ | |
955 | iter_data->offloading_tid = ffs(available_tids) - 1; | |
956 | return false; | |
957 | } | |
958 | ||
d6230972 EP |
959 | static void iwl_mvm_enter_d0i3_iterator(void *_data, u8 *mac, |
960 | struct ieee80211_vif *vif) | |
961 | { | |
37577fe2 EP |
962 | struct iwl_d0i3_iter_data *data = _data; |
963 | struct iwl_mvm *mvm = data->mvm; | |
964 | struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); | |
d6230972 EP |
965 | u32 flags = CMD_ASYNC | CMD_HIGH_PRIO | CMD_SEND_IN_IDLE; |
966 | ||
967 | IWL_DEBUG_RPM(mvm, "entering D0i3 - vif %pM\n", vif->addr); | |
968 | if (vif->type != NL80211_IFTYPE_STATION || | |
969 | !vif->bss_conf.assoc) | |
970 | return; | |
971 | ||
b2492501 AN |
972 | /* |
973 | * in case of pending tx packets or active aggregations, | |
974 | * avoid offloading features in order to prevent reuse of | |
975 | * the same qos seq counters. | |
976 | */ | |
977 | if (iwl_mvm_disallow_offloading(mvm, vif, data)) | |
978 | data->disable_offloading = true; | |
979 | ||
d6230972 | 980 | iwl_mvm_update_d0i3_power_mode(mvm, vif, true, flags); |
8bd22e7b | 981 | iwl_mvm_send_proto_offload(mvm, vif, data->disable_offloading, flags); |
d6230972 EP |
982 | |
983 | /* | |
984 | * on init/association, mvm already configures POWER_TABLE_CMD | |
985 | * and REPLY_MCAST_FILTER_CMD, so currently don't | |
986 | * reconfigure them (we might want to use different | |
987 | * params later on, though). | |
988 | */ | |
37577fe2 EP |
989 | data->ap_sta_id = mvmvif->ap_sta_id; |
990 | data->vif_count++; | |
d6230972 EP |
991 | } |
992 | ||
1a95c8df EP |
993 | static void iwl_mvm_set_wowlan_data(struct iwl_mvm *mvm, |
994 | struct iwl_wowlan_config_cmd_v3 *cmd, | |
995 | struct iwl_d0i3_iter_data *iter_data) | |
996 | { | |
997 | struct ieee80211_sta *ap_sta; | |
998 | struct iwl_mvm_sta *mvm_ap_sta; | |
999 | ||
1000 | if (iter_data->ap_sta_id == IWL_MVM_STATION_COUNT) | |
1001 | return; | |
1002 | ||
1003 | rcu_read_lock(); | |
1004 | ||
1005 | ap_sta = rcu_dereference(mvm->fw_id_to_mac_id[iter_data->ap_sta_id]); | |
1006 | if (IS_ERR_OR_NULL(ap_sta)) | |
1007 | goto out; | |
1008 | ||
1009 | mvm_ap_sta = iwl_mvm_sta_from_mac80211(ap_sta); | |
1010 | cmd->common.is_11n_connection = ap_sta->ht_cap.ht_supported; | |
b2492501 | 1011 | cmd->offloading_tid = iter_data->offloading_tid; |
1a95c8df EP |
1012 | |
1013 | /* | |
1014 | * The d0i3 uCode takes care of the nonqos counters, | |
1015 | * so configure only the qos seq ones. | |
1016 | */ | |
1017 | iwl_mvm_set_wowlan_qos_seq(mvm_ap_sta, &cmd->common); | |
1018 | out: | |
1019 | rcu_read_unlock(); | |
1020 | } | |
b3370d47 EP |
1021 | static int iwl_mvm_enter_d0i3(struct iwl_op_mode *op_mode) |
1022 | { | |
1023 | struct iwl_mvm *mvm = IWL_OP_MODE_GET_MVM(op_mode); | |
98ee7783 | 1024 | u32 flags = CMD_ASYNC | CMD_HIGH_PRIO | CMD_SEND_IN_IDLE; |
b77f06d9 | 1025 | int ret; |
37577fe2 EP |
1026 | struct iwl_d0i3_iter_data d0i3_iter_data = { |
1027 | .mvm = mvm, | |
1028 | }; | |
1a95c8df EP |
1029 | struct iwl_wowlan_config_cmd_v3 wowlan_config_cmd = { |
1030 | .common = { | |
1031 | .wakeup_filter = | |
1032 | cpu_to_le32(IWL_WOWLAN_WAKEUP_RX_FRAME | | |
1033 | IWL_WOWLAN_WAKEUP_BEACON_MISS | | |
1034 | IWL_WOWLAN_WAKEUP_LINK_CHANGE | | |
1035 | IWL_WOWLAN_WAKEUP_BCN_FILTERING), | |
1036 | }, | |
b77f06d9 | 1037 | }; |
98ee7783 AN |
1038 | struct iwl_d3_manager_config d3_cfg_cmd = { |
1039 | .min_sleep_time = cpu_to_le32(1000), | |
1040 | }; | |
b3370d47 EP |
1041 | |
1042 | IWL_DEBUG_RPM(mvm, "MVM entering D0i3\n"); | |
98ee7783 | 1043 | |
b2492501 AN |
1044 | /* make sure we have no running tx while configuring the qos */ |
1045 | set_bit(IWL_MVM_STATUS_IN_D0I3, &mvm->status); | |
1046 | synchronize_net(); | |
1047 | ||
d6230972 EP |
1048 | ieee80211_iterate_active_interfaces_atomic(mvm->hw, |
1049 | IEEE80211_IFACE_ITER_NORMAL, | |
1050 | iwl_mvm_enter_d0i3_iterator, | |
37577fe2 EP |
1051 | &d0i3_iter_data); |
1052 | if (d0i3_iter_data.vif_count == 1) { | |
1053 | mvm->d0i3_ap_sta_id = d0i3_iter_data.ap_sta_id; | |
b2492501 | 1054 | mvm->d0i3_offloading = !d0i3_iter_data.disable_offloading; |
37577fe2 EP |
1055 | } else { |
1056 | WARN_ON_ONCE(d0i3_iter_data.vif_count > 1); | |
1057 | mvm->d0i3_ap_sta_id = IWL_MVM_STATION_COUNT; | |
b2492501 | 1058 | mvm->d0i3_offloading = false; |
37577fe2 | 1059 | } |
d6230972 | 1060 | |
1a95c8df | 1061 | iwl_mvm_set_wowlan_data(mvm, &wowlan_config_cmd, &d0i3_iter_data); |
b77f06d9 EP |
1062 | ret = iwl_mvm_send_cmd_pdu(mvm, WOWLAN_CONFIGURATION, flags, |
1063 | sizeof(wowlan_config_cmd), | |
1064 | &wowlan_config_cmd); | |
1065 | if (ret) | |
1066 | return ret; | |
1067 | ||
98ee7783 AN |
1068 | return iwl_mvm_send_cmd_pdu(mvm, D3_CONFIG_CMD, |
1069 | flags | CMD_MAKE_TRANS_IDLE, | |
1070 | sizeof(d3_cfg_cmd), &d3_cfg_cmd); | |
b3370d47 EP |
1071 | } |
1072 | ||
d6230972 EP |
1073 | static void iwl_mvm_exit_d0i3_iterator(void *_data, u8 *mac, |
1074 | struct ieee80211_vif *vif) | |
1075 | { | |
1076 | struct iwl_mvm *mvm = _data; | |
1077 | u32 flags = CMD_ASYNC | CMD_HIGH_PRIO; | |
1078 | ||
1079 | IWL_DEBUG_RPM(mvm, "exiting D0i3 - vif %pM\n", vif->addr); | |
1080 | if (vif->type != NL80211_IFTYPE_STATION || | |
1081 | !vif->bss_conf.assoc) | |
1082 | return; | |
1083 | ||
1084 | iwl_mvm_update_d0i3_power_mode(mvm, vif, false, flags); | |
1085 | } | |
1086 | ||
37577fe2 EP |
1087 | static void iwl_mvm_d0i3_disconnect_iter(void *data, u8 *mac, |
1088 | struct ieee80211_vif *vif) | |
1089 | { | |
1090 | struct iwl_mvm *mvm = data; | |
1091 | struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); | |
1092 | ||
1093 | if (vif->type == NL80211_IFTYPE_STATION && vif->bss_conf.assoc && | |
1094 | mvm->d0i3_ap_sta_id == mvmvif->ap_sta_id) | |
1095 | ieee80211_connection_loss(vif); | |
1096 | } | |
1097 | ||
b2492501 AN |
1098 | void iwl_mvm_d0i3_enable_tx(struct iwl_mvm *mvm, __le16 *qos_seq) |
1099 | { | |
1100 | struct ieee80211_sta *sta = NULL; | |
1101 | struct iwl_mvm_sta *mvm_ap_sta; | |
1102 | int i; | |
1103 | bool wake_queues = false; | |
1104 | ||
1105 | lockdep_assert_held(&mvm->mutex); | |
1106 | ||
1107 | spin_lock_bh(&mvm->d0i3_tx_lock); | |
1108 | ||
1109 | if (mvm->d0i3_ap_sta_id == IWL_MVM_STATION_COUNT) | |
1110 | goto out; | |
1111 | ||
1112 | IWL_DEBUG_RPM(mvm, "re-enqueue packets\n"); | |
1113 | ||
1114 | /* get the sta in order to update seq numbers and re-enqueue skbs */ | |
1115 | sta = rcu_dereference_protected( | |
1116 | mvm->fw_id_to_mac_id[mvm->d0i3_ap_sta_id], | |
1117 | lockdep_is_held(&mvm->mutex)); | |
1118 | ||
1119 | if (IS_ERR_OR_NULL(sta)) { | |
1120 | sta = NULL; | |
1121 | goto out; | |
1122 | } | |
1123 | ||
1124 | if (mvm->d0i3_offloading && qos_seq) { | |
1125 | /* update qos seq numbers if offloading was enabled */ | |
1126 | mvm_ap_sta = (struct iwl_mvm_sta *)sta->drv_priv; | |
1127 | for (i = 0; i < IWL_MAX_TID_COUNT; i++) { | |
1128 | u16 seq = le16_to_cpu(qos_seq[i]); | |
1129 | /* firmware stores last-used one, we store next one */ | |
1130 | seq += 0x10; | |
1131 | mvm_ap_sta->tid_data[i].seq_number = seq; | |
1132 | } | |
1133 | } | |
1134 | out: | |
1135 | /* re-enqueue (or drop) all packets */ | |
1136 | while (!skb_queue_empty(&mvm->d0i3_tx)) { | |
1137 | struct sk_buff *skb = __skb_dequeue(&mvm->d0i3_tx); | |
1138 | ||
1139 | if (!sta || iwl_mvm_tx_skb(mvm, skb, sta)) | |
1140 | ieee80211_free_txskb(mvm->hw, skb); | |
1141 | ||
1142 | /* if the skb_queue is not empty, we need to wake queues */ | |
1143 | wake_queues = true; | |
1144 | } | |
1145 | clear_bit(IWL_MVM_STATUS_IN_D0I3, &mvm->status); | |
1146 | wake_up(&mvm->d0i3_exit_waitq); | |
1147 | mvm->d0i3_ap_sta_id = IWL_MVM_STATION_COUNT; | |
1148 | if (wake_queues) | |
1149 | ieee80211_wake_queues(mvm->hw); | |
1150 | ||
1151 | spin_unlock_bh(&mvm->d0i3_tx_lock); | |
1152 | } | |
1153 | ||
37577fe2 EP |
1154 | static void iwl_mvm_d0i3_exit_work(struct work_struct *wk) |
1155 | { | |
1156 | struct iwl_mvm *mvm = container_of(wk, struct iwl_mvm, d0i3_exit_work); | |
1157 | struct iwl_host_cmd get_status_cmd = { | |
1158 | .id = WOWLAN_GET_STATUSES, | |
a1022927 | 1159 | .flags = CMD_HIGH_PRIO | CMD_WANT_SKB, |
37577fe2 | 1160 | }; |
3afec639 | 1161 | struct iwl_wowlan_status *status; |
37577fe2 EP |
1162 | int ret; |
1163 | u32 disconnection_reasons, wakeup_reasons; | |
b2492501 | 1164 | __le16 *qos_seq = NULL; |
37577fe2 EP |
1165 | |
1166 | mutex_lock(&mvm->mutex); | |
1167 | ret = iwl_mvm_send_cmd(mvm, &get_status_cmd); | |
1168 | if (ret) | |
1169 | goto out; | |
1170 | ||
1171 | if (!get_status_cmd.resp_pkt) | |
1172 | goto out; | |
1173 | ||
1174 | status = (void *)get_status_cmd.resp_pkt->data; | |
1175 | wakeup_reasons = le32_to_cpu(status->wakeup_reasons); | |
b2492501 | 1176 | qos_seq = status->qos_seq_ctr; |
37577fe2 EP |
1177 | |
1178 | IWL_DEBUG_RPM(mvm, "wakeup reasons: 0x%x\n", wakeup_reasons); | |
1179 | ||
1180 | disconnection_reasons = | |
1181 | IWL_WOWLAN_WAKEUP_BY_DISCONNECTION_ON_MISSED_BEACON | | |
1182 | IWL_WOWLAN_WAKEUP_BY_DISCONNECTION_ON_DEAUTH; | |
1183 | if (wakeup_reasons & disconnection_reasons) | |
1184 | ieee80211_iterate_active_interfaces( | |
1185 | mvm->hw, IEEE80211_IFACE_ITER_NORMAL, | |
1186 | iwl_mvm_d0i3_disconnect_iter, mvm); | |
1187 | ||
1188 | iwl_free_resp(&get_status_cmd); | |
1189 | out: | |
b2492501 | 1190 | iwl_mvm_d0i3_enable_tx(mvm, qos_seq); |
d15a747f | 1191 | iwl_mvm_unref(mvm, IWL_MVM_REF_EXIT_WORK); |
37577fe2 EP |
1192 | mutex_unlock(&mvm->mutex); |
1193 | } | |
1194 | ||
d15a747f | 1195 | int _iwl_mvm_exit_d0i3(struct iwl_mvm *mvm) |
b3370d47 | 1196 | { |
98ee7783 AN |
1197 | u32 flags = CMD_ASYNC | CMD_HIGH_PRIO | CMD_SEND_IN_IDLE | |
1198 | CMD_WAKE_UP_TRANS; | |
d6230972 | 1199 | int ret; |
b3370d47 EP |
1200 | |
1201 | IWL_DEBUG_RPM(mvm, "MVM exiting D0i3\n"); | |
98ee7783 | 1202 | |
d15a747f EP |
1203 | mutex_lock(&mvm->d0i3_suspend_mutex); |
1204 | if (test_bit(D0I3_DEFER_WAKEUP, &mvm->d0i3_suspend_flags)) { | |
1205 | IWL_DEBUG_RPM(mvm, "Deferring d0i3 exit until resume\n"); | |
1206 | __set_bit(D0I3_PENDING_WAKEUP, &mvm->d0i3_suspend_flags); | |
1207 | mutex_unlock(&mvm->d0i3_suspend_mutex); | |
1208 | return 0; | |
1209 | } | |
1210 | mutex_unlock(&mvm->d0i3_suspend_mutex); | |
1211 | ||
d6230972 EP |
1212 | ret = iwl_mvm_send_cmd_pdu(mvm, D0I3_END_CMD, flags, 0, NULL); |
1213 | if (ret) | |
37577fe2 | 1214 | goto out; |
d6230972 EP |
1215 | |
1216 | ieee80211_iterate_active_interfaces_atomic(mvm->hw, | |
1217 | IEEE80211_IFACE_ITER_NORMAL, | |
1218 | iwl_mvm_exit_d0i3_iterator, | |
1219 | mvm); | |
37577fe2 EP |
1220 | out: |
1221 | schedule_work(&mvm->d0i3_exit_work); | |
1222 | return ret; | |
b3370d47 EP |
1223 | } |
1224 | ||
d15a747f EP |
1225 | static int iwl_mvm_exit_d0i3(struct iwl_op_mode *op_mode) |
1226 | { | |
1227 | struct iwl_mvm *mvm = IWL_OP_MODE_GET_MVM(op_mode); | |
1228 | ||
1229 | iwl_mvm_ref(mvm, IWL_MVM_REF_EXIT_WORK); | |
1230 | return _iwl_mvm_exit_d0i3(mvm); | |
1231 | } | |
1232 | ||
f14d6b39 JB |
1233 | static void iwl_mvm_napi_add(struct iwl_op_mode *op_mode, |
1234 | struct napi_struct *napi, | |
1235 | struct net_device *napi_dev, | |
1236 | int (*poll)(struct napi_struct *, int), | |
1237 | int weight) | |
1238 | { | |
1239 | struct iwl_mvm *mvm = IWL_OP_MODE_GET_MVM(op_mode); | |
1240 | ||
1241 | ieee80211_napi_add(mvm->hw, napi, napi_dev, poll, weight); | |
1242 | } | |
1243 | ||
8ca151b5 JB |
1244 | static const struct iwl_op_mode_ops iwl_mvm_ops = { |
1245 | .start = iwl_op_mode_mvm_start, | |
1246 | .stop = iwl_op_mode_mvm_stop, | |
1247 | .rx = iwl_mvm_rx_dispatch, | |
1248 | .queue_full = iwl_mvm_stop_sw_queue, | |
1249 | .queue_not_full = iwl_mvm_wake_sw_queue, | |
1250 | .hw_rf_kill = iwl_mvm_set_hw_rfkill_state, | |
1251 | .free_skb = iwl_mvm_free_skb, | |
1252 | .nic_error = iwl_mvm_nic_error, | |
1253 | .cmd_queue_full = iwl_mvm_cmd_queue_full, | |
1254 | .nic_config = iwl_mvm_nic_config, | |
b3370d47 EP |
1255 | .enter_d0i3 = iwl_mvm_enter_d0i3, |
1256 | .exit_d0i3 = iwl_mvm_exit_d0i3, | |
f14d6b39 | 1257 | .napi_add = iwl_mvm_napi_add, |
8ca151b5 | 1258 | }; |