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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), |
d2496221 DS |
247 | RX_HANDLER(SCAN_COMPLETE_UMAC, iwl_mvm_rx_umac_scan_complete_notif, |
248 | true), | |
497b49d2 | 249 | |
8ca151b5 JB |
250 | RX_HANDLER(RADIO_VERSION_NOTIFICATION, iwl_mvm_rx_radio_ver, false), |
251 | RX_HANDLER(CARD_STATE_NOTIFICATION, iwl_mvm_rx_card_state_notif, false), | |
252 | ||
d64048ed HG |
253 | RX_HANDLER(MISSED_BEACONS_NOTIFICATION, iwl_mvm_rx_missed_beacons_notif, |
254 | false), | |
255 | ||
8ca151b5 | 256 | RX_HANDLER(REPLY_ERROR, iwl_mvm_rx_fw_error, false), |
175a70b7 AB |
257 | RX_HANDLER(PSM_UAPSD_AP_MISBEHAVING_NOTIFICATION, |
258 | iwl_mvm_power_uapsd_misbehaving_ap_notif, false), | |
ea9af24d LC |
259 | RX_HANDLER(DTS_MEASUREMENT_NOTIFICATION, iwl_mvm_temp_notif, true), |
260 | ||
8ca151b5 JB |
261 | }; |
262 | #undef RX_HANDLER | |
263 | #define CMD(x) [x] = #x | |
264 | ||
e5209263 | 265 | static const char *const iwl_mvm_cmd_strings[REPLY_MAX] = { |
8ca151b5 JB |
266 | CMD(MVM_ALIVE), |
267 | CMD(REPLY_ERROR), | |
268 | CMD(INIT_COMPLETE_NOTIF), | |
269 | CMD(PHY_CONTEXT_CMD), | |
270 | CMD(MGMT_MCAST_KEY), | |
271 | CMD(TX_CMD), | |
272 | CMD(TXPATH_FLUSH), | |
273 | CMD(MAC_CONTEXT_CMD), | |
274 | CMD(TIME_EVENT_CMD), | |
275 | CMD(TIME_EVENT_NOTIFICATION), | |
276 | CMD(BINDING_CONTEXT_CMD), | |
277 | CMD(TIME_QUOTA_CMD), | |
4ac6cb59 | 278 | CMD(NON_QOS_TX_COUNTER_CMD), |
8ca151b5 JB |
279 | CMD(RADIO_VERSION_NOTIFICATION), |
280 | CMD(SCAN_REQUEST_CMD), | |
281 | CMD(SCAN_ABORT_CMD), | |
282 | CMD(SCAN_START_NOTIFICATION), | |
283 | CMD(SCAN_RESULTS_NOTIFICATION), | |
284 | CMD(SCAN_COMPLETE_NOTIFICATION), | |
285 | CMD(NVM_ACCESS_CMD), | |
286 | CMD(PHY_CONFIGURATION_CMD), | |
287 | CMD(CALIB_RES_NOTIF_PHY_DB), | |
288 | CMD(SET_CALIB_DEFAULT_CMD), | |
289 | CMD(CALIBRATION_COMPLETE_NOTIFICATION), | |
5a258aae | 290 | CMD(ADD_STA_KEY), |
8ca151b5 JB |
291 | CMD(ADD_STA), |
292 | CMD(REMOVE_STA), | |
293 | CMD(LQ_CMD), | |
294 | CMD(SCAN_OFFLOAD_CONFIG_CMD), | |
35a000b7 | 295 | CMD(MATCH_FOUND_NOTIFICATION), |
8ca151b5 JB |
296 | CMD(SCAN_OFFLOAD_REQUEST_CMD), |
297 | CMD(SCAN_OFFLOAD_ABORT_CMD), | |
b112889c | 298 | CMD(HOT_SPOT_CMD), |
8ca151b5 JB |
299 | CMD(SCAN_OFFLOAD_COMPLETE), |
300 | CMD(SCAN_OFFLOAD_UPDATE_PROFILES_CMD), | |
fb98be5e | 301 | CMD(SCAN_ITERATION_COMPLETE), |
8ca151b5 JB |
302 | CMD(POWER_TABLE_CMD), |
303 | CMD(WEP_KEY), | |
304 | CMD(REPLY_RX_PHY_CMD), | |
305 | CMD(REPLY_RX_MPDU_CMD), | |
571765c8 | 306 | CMD(BEACON_NOTIFICATION), |
8ca151b5 JB |
307 | CMD(BEACON_TEMPLATE_CMD), |
308 | CMD(STATISTICS_NOTIFICATION), | |
3e56eadf | 309 | CMD(EOSP_NOTIFICATION), |
88f2fd73 | 310 | CMD(REDUCE_TX_POWER_CMD), |
8ca151b5 JB |
311 | CMD(TX_ANT_CONFIGURATION_CMD), |
312 | CMD(D3_CONFIG_CMD), | |
98ee7783 | 313 | CMD(D0I3_END_CMD), |
8ca151b5 JB |
314 | CMD(PROT_OFFLOAD_CONFIG_CMD), |
315 | CMD(OFFLOADS_QUERY_CMD), | |
316 | CMD(REMOTE_WAKE_CONFIG_CMD), | |
317 | CMD(WOWLAN_PATTERNS), | |
318 | CMD(WOWLAN_CONFIGURATION), | |
319 | CMD(WOWLAN_TSC_RSC_PARAM), | |
320 | CMD(WOWLAN_TKIP_PARAM), | |
321 | CMD(WOWLAN_KEK_KCK_MATERIAL), | |
322 | CMD(WOWLAN_GET_STATUSES), | |
323 | CMD(WOWLAN_TX_POWER_PER_DB), | |
324 | CMD(NET_DETECT_CONFIG_CMD), | |
325 | CMD(NET_DETECT_PROFILES_QUERY_CMD), | |
326 | CMD(NET_DETECT_PROFILES_CMD), | |
327 | CMD(NET_DETECT_HOTSPOTS_CMD), | |
328 | CMD(NET_DETECT_HOTSPOTS_QUERY_CMD), | |
3b4612fb | 329 | CMD(CARD_STATE_NOTIFICATION), |
d64048ed | 330 | CMD(MISSED_BEACONS_NOTIFICATION), |
fb3ceb81 EG |
331 | CMD(BT_COEX_PRIO_TABLE), |
332 | CMD(BT_COEX_PROT_ENV), | |
333 | CMD(BT_PROFILE_NOTIFICATION), | |
334 | CMD(BT_CONFIG), | |
51b6b9e0 | 335 | CMD(MCAST_FILTER_CMD), |
c87163b9 | 336 | CMD(BCAST_FILTER_CMD), |
7a06a38a | 337 | CMD(REPLY_SF_CFG_CMD), |
7df15b1e | 338 | CMD(REPLY_BEACON_FILTERING_CMD), |
a0a09243 LC |
339 | CMD(CMD_DTS_MEASUREMENT_TRIGGER), |
340 | CMD(DTS_MEASUREMENT_NOTIFICATION), | |
9ee718aa | 341 | CMD(REPLY_THERMAL_MNG_BACKOFF), |
e811ada7 | 342 | CMD(MAC_PM_POWER_TABLE), |
9180ac50 | 343 | CMD(LTR_CONFIG), |
dac94da8 | 344 | CMD(BT_COEX_CI), |
430a3bba EG |
345 | CMD(BT_COEX_UPDATE_SW_BOOST), |
346 | CMD(BT_COEX_UPDATE_CORUN_LUT), | |
347 | CMD(BT_COEX_UPDATE_REDUCED_TXP), | |
175a70b7 | 348 | CMD(PSM_UAPSD_AP_MISBEHAVING_NOTIFICATION), |
b9fae2d5 | 349 | CMD(ANTENNA_COUPLING_NOTIFICATION), |
3edf8ff6 | 350 | CMD(SCD_QUEUE_CFG), |
d2496221 DS |
351 | CMD(SCAN_CFG_CMD), |
352 | CMD(SCAN_REQ_UMAC), | |
353 | CMD(SCAN_ABORT_UMAC), | |
354 | CMD(SCAN_COMPLETE_UMAC), | |
8ca151b5 JB |
355 | }; |
356 | #undef CMD | |
357 | ||
358 | /* this forward declaration can avoid to export the function */ | |
359 | static void iwl_mvm_async_handlers_wk(struct work_struct *wk); | |
37577fe2 | 360 | static void iwl_mvm_d0i3_exit_work(struct work_struct *wk); |
8ca151b5 | 361 | |
0c0e2c71 IY |
362 | static u32 calc_min_backoff(struct iwl_trans *trans, const struct iwl_cfg *cfg) |
363 | { | |
364 | const struct iwl_pwr_tx_backoff *pwr_tx_backoff = cfg->pwr_tx_backoffs; | |
365 | ||
366 | if (!pwr_tx_backoff) | |
367 | return 0; | |
368 | ||
369 | while (pwr_tx_backoff->pwr) { | |
370 | if (trans->dflt_pwr_limit >= pwr_tx_backoff->pwr) | |
371 | return pwr_tx_backoff->backoff; | |
372 | ||
373 | pwr_tx_backoff++; | |
374 | } | |
375 | ||
376 | return 0; | |
377 | } | |
378 | ||
4bfa47f3 EG |
379 | static void iwl_mvm_fw_error_dump_wk(struct work_struct *work); |
380 | ||
8ca151b5 JB |
381 | static struct iwl_op_mode * |
382 | iwl_op_mode_mvm_start(struct iwl_trans *trans, const struct iwl_cfg *cfg, | |
383 | const struct iwl_fw *fw, struct dentry *dbgfs_dir) | |
384 | { | |
385 | struct ieee80211_hw *hw; | |
386 | struct iwl_op_mode *op_mode; | |
387 | struct iwl_mvm *mvm; | |
388 | struct iwl_trans_config trans_cfg = {}; | |
389 | static const u8 no_reclaim_cmds[] = { | |
390 | TX_CMD, | |
391 | }; | |
392 | int err, scan_size; | |
0c0e2c71 | 393 | u32 min_backoff; |
8ca151b5 | 394 | |
c4d83271 EG |
395 | /* |
396 | * We use IWL_MVM_STATION_COUNT to check the validity of the station | |
397 | * index all over the driver - check that its value corresponds to the | |
398 | * array size. | |
399 | */ | |
400 | BUILD_BUG_ON(ARRAY_SIZE(mvm->fw_id_to_mac_id) != IWL_MVM_STATION_COUNT); | |
401 | ||
8ca151b5 JB |
402 | /******************************** |
403 | * 1. Allocating and configuring HW data | |
404 | ********************************/ | |
405 | hw = ieee80211_alloc_hw(sizeof(struct iwl_op_mode) + | |
406 | sizeof(struct iwl_mvm), | |
407 | &iwl_mvm_hw_ops); | |
408 | if (!hw) | |
409 | return NULL; | |
410 | ||
745160ee OG |
411 | if (cfg->max_rx_agg_size) |
412 | hw->max_rx_aggregation_subframes = cfg->max_rx_agg_size; | |
413 | ||
77d96730 GG |
414 | if (cfg->max_tx_agg_size) |
415 | hw->max_tx_aggregation_subframes = cfg->max_tx_agg_size; | |
416 | ||
8ca151b5 JB |
417 | op_mode = hw->priv; |
418 | op_mode->ops = &iwl_mvm_ops; | |
8ca151b5 JB |
419 | |
420 | mvm = IWL_OP_MODE_GET_MVM(op_mode); | |
421 | mvm->dev = trans->dev; | |
422 | mvm->trans = trans; | |
423 | mvm->cfg = cfg; | |
424 | mvm->fw = fw; | |
425 | mvm->hw = hw; | |
426 | ||
291aa7c4 EH |
427 | mvm->restart_fw = iwlwifi_mod_params.restart_fw ? -1 : 0; |
428 | ||
19e737c9 EL |
429 | mvm->aux_queue = 15; |
430 | mvm->first_agg_queue = 16; | |
431 | mvm->last_agg_queue = mvm->cfg->base_params->num_of_queues - 1; | |
432 | if (mvm->cfg->base_params->num_of_queues == 16) { | |
433 | mvm->aux_queue = 11; | |
434 | mvm->first_agg_queue = 12; | |
435 | } | |
1f3b0ff8 | 436 | mvm->sf_state = SF_UNINIT; |
ddfc1593 | 437 | mvm->low_latency_agg_frame_limit = 6; |
7b358f06 | 438 | mvm->cur_ucode = IWL_UCODE_INIT; |
19e737c9 | 439 | |
8ca151b5 | 440 | mutex_init(&mvm->mutex); |
d15a747f | 441 | mutex_init(&mvm->d0i3_suspend_mutex); |
8ca151b5 JB |
442 | spin_lock_init(&mvm->async_handlers_lock); |
443 | INIT_LIST_HEAD(&mvm->time_event_list); | |
b112889c | 444 | INIT_LIST_HEAD(&mvm->aux_roc_te_list); |
8ca151b5 JB |
445 | INIT_LIST_HEAD(&mvm->async_handlers_list); |
446 | spin_lock_init(&mvm->time_event_lock); | |
447 | ||
448 | INIT_WORK(&mvm->async_handlers_wk, iwl_mvm_async_handlers_wk); | |
449 | INIT_WORK(&mvm->roc_done_wk, iwl_mvm_roc_done_wk); | |
450 | INIT_WORK(&mvm->sta_drained_wk, iwl_mvm_sta_drained_wk); | |
37577fe2 | 451 | INIT_WORK(&mvm->d0i3_exit_work, iwl_mvm_d0i3_exit_work); |
4bfa47f3 | 452 | INIT_WORK(&mvm->fw_error_dump_wk, iwl_mvm_fw_error_dump_wk); |
8ca151b5 | 453 | |
b2492501 | 454 | spin_lock_init(&mvm->d0i3_tx_lock); |
576eeee9 | 455 | spin_lock_init(&mvm->refs_lock); |
b2492501 AN |
456 | skb_queue_head_init(&mvm->d0i3_tx); |
457 | init_waitqueue_head(&mvm->d0i3_exit_waitq); | |
458 | ||
8ca151b5 JB |
459 | SET_IEEE80211_DEV(mvm->hw, mvm->trans->dev); |
460 | ||
461 | /* | |
462 | * Populate the state variables that the transport layer needs | |
463 | * to know about. | |
464 | */ | |
465 | trans_cfg.op_mode = op_mode; | |
466 | trans_cfg.no_reclaim_cmds = no_reclaim_cmds; | |
467 | trans_cfg.n_no_reclaim_cmds = ARRAY_SIZE(no_reclaim_cmds); | |
468 | trans_cfg.rx_buf_size_8k = iwlwifi_mod_params.amsdu_size_8K; | |
469 | ||
25b9ea5c | 470 | if (mvm->fw->ucode_capa.flags & IWL_UCODE_TLV_FLAGS_DW_BC_TABLE) |
8ca151b5 JB |
471 | trans_cfg.bc_table_dword = true; |
472 | ||
473 | if (!iwlwifi_mod_params.wd_disable) | |
474 | trans_cfg.queue_watchdog_timeout = cfg->base_params->wd_timeout; | |
475 | else | |
476 | trans_cfg.queue_watchdog_timeout = IWL_WATCHDOG_DISABLED; | |
477 | ||
478 | trans_cfg.command_names = iwl_mvm_cmd_strings; | |
479 | ||
480 | trans_cfg.cmd_queue = IWL_MVM_CMD_QUEUE; | |
b2d81db7 | 481 | trans_cfg.cmd_fifo = IWL_MVM_TX_FIFO_CMD; |
3a736bcb | 482 | trans_cfg.scd_set_active = true; |
8ca151b5 JB |
483 | |
484 | snprintf(mvm->hw->wiphy->fw_version, | |
485 | sizeof(mvm->hw->wiphy->fw_version), | |
486 | "%s", fw->fw_version); | |
487 | ||
488 | /* Configure transport layer */ | |
489 | iwl_trans_configure(mvm->trans, &trans_cfg); | |
490 | ||
491 | trans->rx_mpdu_cmd = REPLY_RX_MPDU_CMD; | |
492 | trans->rx_mpdu_cmd_hdr_size = sizeof(struct iwl_rx_mpdu_res_start); | |
493 | ||
494 | /* set up notification wait support */ | |
495 | iwl_notification_wait_init(&mvm->notif_wait); | |
496 | ||
497 | /* Init phy db */ | |
498 | mvm->phy_db = iwl_phy_db_init(trans); | |
499 | if (!mvm->phy_db) { | |
500 | IWL_ERR(mvm, "Cannot init phy_db\n"); | |
501 | goto out_free; | |
502 | } | |
503 | ||
504 | IWL_INFO(mvm, "Detected %s, REV=0x%X\n", | |
505 | mvm->cfg->name, mvm->trans->hw_rev); | |
506 | ||
0c0e2c71 IY |
507 | min_backoff = calc_min_backoff(trans, cfg); |
508 | iwl_mvm_tt_initialize(mvm, min_backoff); | |
e02a9d60 EH |
509 | /* set the nvm_file_name according to priority */ |
510 | if (iwlwifi_mod_params.nvm_file) | |
511 | mvm->nvm_file_name = iwlwifi_mod_params.nvm_file; | |
512 | else | |
513 | mvm->nvm_file_name = mvm->cfg->default_nvm_file; | |
9ee718aa | 514 | |
e02a9d60 | 515 | if (WARN(cfg->no_power_up_nic_in_init && !mvm->nvm_file_name, |
14b485f0 EH |
516 | "not allowing power-up and not having nvm_file\n")) |
517 | goto out_free; | |
518 | ||
81a67e32 | 519 | /* |
0ade579c | 520 | * Even if nvm exists in the nvm_file driver should read again the nvm |
14b485f0 EH |
521 | * from the nic because there might be entries that exist in the OTP |
522 | * and not in the file. | |
523 | * for nics with no_power_up_nic_in_init: rely completley on nvm_file | |
81a67e32 | 524 | */ |
e02a9d60 | 525 | if (cfg->no_power_up_nic_in_init && mvm->nvm_file_name) { |
14b485f0 | 526 | err = iwl_nvm_init(mvm, false); |
8c678ed4 EP |
527 | if (err) |
528 | goto out_free; | |
81a67e32 EL |
529 | } else { |
530 | err = iwl_trans_start_hw(mvm->trans); | |
531 | if (err) | |
532 | goto out_free; | |
533 | ||
534 | mutex_lock(&mvm->mutex); | |
535 | err = iwl_run_init_mvm_ucode(mvm, true); | |
b93b1fe3 LK |
536 | if (!err || !iwlmvm_mod_params.init_dbg) |
537 | iwl_trans_stop_device(trans); | |
81a67e32 EL |
538 | mutex_unlock(&mvm->mutex); |
539 | /* returns 0 if successful, 1 if success but in rfkill */ | |
540 | if (err < 0 && !iwlmvm_mod_params.init_dbg) { | |
541 | IWL_ERR(mvm, "Failed to run INIT ucode: %d\n", err); | |
542 | goto out_free; | |
543 | } | |
8ca151b5 JB |
544 | } |
545 | ||
d2496221 | 546 | scan_size = iwl_mvm_scan_size(mvm); |
fb98be5e | 547 | |
8ca151b5 JB |
548 | mvm->scan_cmd = kmalloc(scan_size, GFP_KERNEL); |
549 | if (!mvm->scan_cmd) | |
550 | goto out_free; | |
551 | ||
552 | err = iwl_mvm_mac_setup_register(mvm); | |
553 | if (err) | |
554 | goto out_free; | |
555 | ||
556 | err = iwl_mvm_dbgfs_register(mvm, dbgfs_dir); | |
557 | if (err) | |
558 | goto out_unregister; | |
559 | ||
3848ab66 MG |
560 | memset(&mvm->rx_stats, 0, sizeof(struct mvm_statistics_rx)); |
561 | ||
7498cf4c | 562 | /* rpm starts with a taken ref. only set the appropriate bit here. */ |
576eeee9 | 563 | mvm->refs[IWL_MVM_REF_UCODE_DOWN] = 1; |
7498cf4c | 564 | |
8ca151b5 JB |
565 | return op_mode; |
566 | ||
567 | out_unregister: | |
568 | ieee80211_unregister_hw(mvm->hw); | |
91b0d119 | 569 | iwl_mvm_leds_exit(mvm); |
8ca151b5 JB |
570 | out_free: |
571 | iwl_phy_db_free(mvm->phy_db); | |
572 | kfree(mvm->scan_cmd); | |
e02a9d60 | 573 | if (!cfg->no_power_up_nic_in_init || !mvm->nvm_file_name) |
a4082843 | 574 | iwl_trans_op_mode_leave(trans); |
8ca151b5 JB |
575 | ieee80211_free_hw(mvm->hw); |
576 | return NULL; | |
577 | } | |
578 | ||
579 | static void iwl_op_mode_mvm_stop(struct iwl_op_mode *op_mode) | |
580 | { | |
581 | struct iwl_mvm *mvm = IWL_OP_MODE_GET_MVM(op_mode); | |
582 | int i; | |
583 | ||
584 | iwl_mvm_leds_exit(mvm); | |
585 | ||
9ee718aa EL |
586 | iwl_mvm_tt_exit(mvm); |
587 | ||
8ca151b5 JB |
588 | ieee80211_unregister_hw(mvm->hw); |
589 | ||
590 | kfree(mvm->scan_cmd); | |
e59647ea EP |
591 | kfree(mvm->mcast_filter_cmd); |
592 | mvm->mcast_filter_cmd = NULL; | |
8ca151b5 | 593 | |
afc66bb7 JB |
594 | #if defined(CONFIG_PM_SLEEP) && defined(CONFIG_IWLWIFI_DEBUGFS) |
595 | kfree(mvm->d3_resume_sram); | |
3c2f3b20 LC |
596 | if (mvm->nd_config) { |
597 | kfree(mvm->nd_config->match_sets); | |
598 | kfree(mvm->nd_config); | |
599 | mvm->nd_config = NULL; | |
3c2f3b20 | 600 | } |
afc66bb7 JB |
601 | #endif |
602 | ||
a4082843 | 603 | iwl_trans_op_mode_leave(mvm->trans); |
8ca151b5 JB |
604 | |
605 | iwl_phy_db_free(mvm->phy_db); | |
606 | mvm->phy_db = NULL; | |
607 | ||
8ca151b5 | 608 | iwl_free_nvm_data(mvm->nvm_data); |
ae2b21b0 | 609 | for (i = 0; i < NVM_MAX_NUM_SECTIONS; i++) |
8ca151b5 JB |
610 | kfree(mvm->nvm_sections[i].data); |
611 | ||
612 | ieee80211_free_hw(mvm->hw); | |
613 | } | |
614 | ||
615 | struct iwl_async_handler_entry { | |
616 | struct list_head list; | |
617 | struct iwl_rx_cmd_buffer rxb; | |
618 | int (*fn)(struct iwl_mvm *mvm, struct iwl_rx_cmd_buffer *rxb, | |
619 | struct iwl_device_cmd *cmd); | |
620 | }; | |
621 | ||
622 | void iwl_mvm_async_handlers_purge(struct iwl_mvm *mvm) | |
623 | { | |
624 | struct iwl_async_handler_entry *entry, *tmp; | |
625 | ||
626 | spin_lock_bh(&mvm->async_handlers_lock); | |
627 | list_for_each_entry_safe(entry, tmp, &mvm->async_handlers_list, list) { | |
628 | iwl_free_rxb(&entry->rxb); | |
629 | list_del(&entry->list); | |
630 | kfree(entry); | |
631 | } | |
632 | spin_unlock_bh(&mvm->async_handlers_lock); | |
633 | } | |
634 | ||
635 | static void iwl_mvm_async_handlers_wk(struct work_struct *wk) | |
636 | { | |
637 | struct iwl_mvm *mvm = | |
638 | container_of(wk, struct iwl_mvm, async_handlers_wk); | |
639 | struct iwl_async_handler_entry *entry, *tmp; | |
640 | struct list_head local_list; | |
641 | ||
642 | INIT_LIST_HEAD(&local_list); | |
643 | ||
644 | /* Ensure that we are not in stop flow (check iwl_mvm_mac_stop) */ | |
645 | mutex_lock(&mvm->mutex); | |
646 | ||
647 | /* | |
648 | * Sync with Rx path with a lock. Remove all the entries from this list, | |
649 | * add them to a local one (lock free), and then handle them. | |
650 | */ | |
651 | spin_lock_bh(&mvm->async_handlers_lock); | |
652 | list_splice_init(&mvm->async_handlers_list, &local_list); | |
653 | spin_unlock_bh(&mvm->async_handlers_lock); | |
654 | ||
655 | list_for_each_entry_safe(entry, tmp, &local_list, list) { | |
656 | if (entry->fn(mvm, &entry->rxb, NULL)) | |
657 | IWL_WARN(mvm, | |
658 | "returned value from ASYNC handlers are ignored\n"); | |
659 | iwl_free_rxb(&entry->rxb); | |
660 | list_del(&entry->list); | |
661 | kfree(entry); | |
662 | } | |
663 | mutex_unlock(&mvm->mutex); | |
664 | } | |
665 | ||
666 | static int iwl_mvm_rx_dispatch(struct iwl_op_mode *op_mode, | |
667 | struct iwl_rx_cmd_buffer *rxb, | |
668 | struct iwl_device_cmd *cmd) | |
669 | { | |
670 | struct iwl_rx_packet *pkt = rxb_addr(rxb); | |
671 | struct iwl_mvm *mvm = IWL_OP_MODE_GET_MVM(op_mode); | |
672 | u8 i; | |
673 | ||
674 | /* | |
675 | * Do the notification wait before RX handlers so | |
676 | * even if the RX handler consumes the RXB we have | |
677 | * access to it in the notification wait entry. | |
678 | */ | |
679 | iwl_notification_wait_notify(&mvm->notif_wait, pkt); | |
680 | ||
681 | for (i = 0; i < ARRAY_SIZE(iwl_mvm_rx_handlers); i++) { | |
682 | const struct iwl_rx_handlers *rx_h = &iwl_mvm_rx_handlers[i]; | |
36eed56a EG |
683 | struct iwl_async_handler_entry *entry; |
684 | ||
685 | if (rx_h->cmd_id != pkt->hdr.cmd) | |
686 | continue; | |
687 | ||
688 | if (!rx_h->async) | |
689 | return rx_h->fn(mvm, rxb, cmd); | |
690 | ||
691 | entry = kzalloc(sizeof(*entry), GFP_ATOMIC); | |
692 | /* we can't do much... */ | |
693 | if (!entry) | |
694 | return 0; | |
695 | ||
696 | entry->rxb._page = rxb_steal_page(rxb); | |
697 | entry->rxb._offset = rxb->_offset; | |
698 | entry->rxb._rx_page_order = rxb->_rx_page_order; | |
699 | entry->fn = rx_h->fn; | |
700 | spin_lock(&mvm->async_handlers_lock); | |
701 | list_add_tail(&entry->list, &mvm->async_handlers_list); | |
702 | spin_unlock(&mvm->async_handlers_lock); | |
703 | schedule_work(&mvm->async_handlers_wk); | |
704 | break; | |
8ca151b5 JB |
705 | } |
706 | ||
707 | return 0; | |
708 | } | |
709 | ||
710 | static void iwl_mvm_stop_sw_queue(struct iwl_op_mode *op_mode, int queue) | |
711 | { | |
712 | struct iwl_mvm *mvm = IWL_OP_MODE_GET_MVM(op_mode); | |
713 | int mq = mvm->queue_to_mac80211[queue]; | |
714 | ||
715 | if (WARN_ON_ONCE(mq == IWL_INVALID_MAC80211_QUEUE)) | |
716 | return; | |
717 | ||
df197c00 | 718 | if (atomic_inc_return(&mvm->mac80211_queue_stop_count[mq]) > 1) { |
8ca151b5 JB |
719 | IWL_DEBUG_TX_QUEUES(mvm, |
720 | "queue %d (mac80211 %d) already stopped\n", | |
721 | queue, mq); | |
722 | return; | |
723 | } | |
724 | ||
8ca151b5 JB |
725 | ieee80211_stop_queue(mvm->hw, mq); |
726 | } | |
727 | ||
728 | static void iwl_mvm_wake_sw_queue(struct iwl_op_mode *op_mode, int queue) | |
729 | { | |
730 | struct iwl_mvm *mvm = IWL_OP_MODE_GET_MVM(op_mode); | |
731 | int mq = mvm->queue_to_mac80211[queue]; | |
732 | ||
733 | if (WARN_ON_ONCE(mq == IWL_INVALID_MAC80211_QUEUE)) | |
734 | return; | |
735 | ||
df197c00 | 736 | if (atomic_dec_return(&mvm->mac80211_queue_stop_count[mq]) > 0) { |
8ca151b5 | 737 | IWL_DEBUG_TX_QUEUES(mvm, |
df197c00 | 738 | "queue %d (mac80211 %d) still stopped\n", |
8ca151b5 JB |
739 | queue, mq); |
740 | return; | |
741 | } | |
742 | ||
8ca151b5 JB |
743 | ieee80211_wake_queue(mvm->hw, mq); |
744 | } | |
745 | ||
9ee718aa EL |
746 | void iwl_mvm_set_hw_ctkill_state(struct iwl_mvm *mvm, bool state) |
747 | { | |
748 | if (state) | |
749 | set_bit(IWL_MVM_STATUS_HW_CTKILL, &mvm->status); | |
750 | else | |
751 | clear_bit(IWL_MVM_STATUS_HW_CTKILL, &mvm->status); | |
752 | ||
753 | wiphy_rfkill_set_hw_state(mvm->hw->wiphy, iwl_mvm_is_radio_killed(mvm)); | |
754 | } | |
755 | ||
14cfca71 | 756 | static bool iwl_mvm_set_hw_rfkill_state(struct iwl_op_mode *op_mode, bool state) |
8ca151b5 JB |
757 | { |
758 | struct iwl_mvm *mvm = IWL_OP_MODE_GET_MVM(op_mode); | |
31b8b343 | 759 | bool calibrating = ACCESS_ONCE(mvm->calibrating); |
8ca151b5 JB |
760 | |
761 | if (state) | |
762 | set_bit(IWL_MVM_STATUS_HW_RFKILL, &mvm->status); | |
763 | else | |
764 | clear_bit(IWL_MVM_STATUS_HW_RFKILL, &mvm->status); | |
765 | ||
9ee718aa | 766 | wiphy_rfkill_set_hw_state(mvm->hw->wiphy, iwl_mvm_is_radio_killed(mvm)); |
14cfca71 | 767 | |
31b8b343 EG |
768 | /* iwl_run_init_mvm_ucode is waiting for results, abort it */ |
769 | if (calibrating) | |
770 | iwl_abort_notification_waits(&mvm->notif_wait); | |
771 | ||
772 | /* | |
773 | * Stop the device if we run OPERATIONAL firmware or if we are in the | |
774 | * middle of the calibrations. | |
775 | */ | |
776 | return state && (mvm->cur_ucode != IWL_UCODE_INIT || calibrating); | |
8ca151b5 JB |
777 | } |
778 | ||
779 | static void iwl_mvm_free_skb(struct iwl_op_mode *op_mode, struct sk_buff *skb) | |
780 | { | |
781 | struct iwl_mvm *mvm = IWL_OP_MODE_GET_MVM(op_mode); | |
782 | struct ieee80211_tx_info *info; | |
783 | ||
784 | info = IEEE80211_SKB_CB(skb); | |
785 | iwl_trans_free_tx_cmd(mvm->trans, info->driver_data[1]); | |
786 | ieee80211_free_txskb(mvm->hw, skb); | |
787 | } | |
788 | ||
ac1ed416 JB |
789 | struct iwl_mvm_reprobe { |
790 | struct device *dev; | |
791 | struct work_struct work; | |
792 | }; | |
793 | ||
794 | static void iwl_mvm_reprobe_wk(struct work_struct *wk) | |
795 | { | |
796 | struct iwl_mvm_reprobe *reprobe; | |
797 | ||
798 | reprobe = container_of(wk, struct iwl_mvm_reprobe, work); | |
799 | if (device_reprobe(reprobe->dev)) | |
800 | dev_err(reprobe->dev, "reprobe failed!\n"); | |
801 | kfree(reprobe); | |
802 | module_put(THIS_MODULE); | |
803 | } | |
804 | ||
4bfa47f3 EG |
805 | static void iwl_mvm_fw_error_dump_wk(struct work_struct *work) |
806 | { | |
807 | struct iwl_mvm *mvm = | |
808 | container_of(work, struct iwl_mvm, fw_error_dump_wk); | |
809 | ||
810 | mutex_lock(&mvm->mutex); | |
811 | iwl_mvm_fw_error_dump(mvm); | |
812 | mutex_unlock(&mvm->mutex); | |
813 | } | |
814 | ||
b08c1d97 | 815 | void iwl_mvm_nic_restart(struct iwl_mvm *mvm, bool fw_error) |
8ca151b5 | 816 | { |
8ca151b5 JB |
817 | iwl_abort_notification_waits(&mvm->notif_wait); |
818 | ||
992f81fc DS |
819 | /* |
820 | * This is a bit racy, but worst case we tell mac80211 about | |
821 | * a stopped/aborted scan when that was already done which | |
822 | * is not a problem. It is necessary to abort any os scan | |
823 | * here because mac80211 requires having the scan cleared | |
824 | * before restarting. | |
825 | * We'll reset the scan_status to NONE in restart cleanup in | |
826 | * the next start() call from mac80211. If restart isn't called | |
827 | * (no fw restart) scan status will stay busy. | |
828 | */ | |
829 | switch (mvm->scan_status) { | |
830 | case IWL_MVM_SCAN_NONE: | |
831 | break; | |
832 | case IWL_MVM_SCAN_OS: | |
833 | ieee80211_scan_completed(mvm->hw, true); | |
834 | break; | |
835 | case IWL_MVM_SCAN_SCHED: | |
836 | /* Sched scan will be restarted by mac80211 in restart_hw. */ | |
837 | if (!mvm->restart_fw) | |
838 | ieee80211_sched_scan_stopped(mvm->hw); | |
839 | break; | |
840 | } | |
841 | ||
8ca151b5 JB |
842 | /* |
843 | * If we're restarting already, don't cycle restarts. | |
844 | * If INIT fw asserted, it will likely fail again. | |
845 | * If WoWLAN fw asserted, don't restart either, mac80211 | |
846 | * can't recover this since we're already half suspended. | |
847 | */ | |
848 | if (test_and_set_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status)) { | |
ac1ed416 JB |
849 | struct iwl_mvm_reprobe *reprobe; |
850 | ||
851 | IWL_ERR(mvm, | |
852 | "Firmware error during reconfiguration - reprobe!\n"); | |
853 | ||
854 | /* | |
855 | * get a module reference to avoid doing this while unloading | |
856 | * anyway and to avoid scheduling a work with code that's | |
857 | * being removed. | |
858 | */ | |
859 | if (!try_module_get(THIS_MODULE)) { | |
860 | IWL_ERR(mvm, "Module is being unloaded - abort\n"); | |
861 | return; | |
862 | } | |
863 | ||
864 | reprobe = kzalloc(sizeof(*reprobe), GFP_ATOMIC); | |
865 | if (!reprobe) { | |
866 | module_put(THIS_MODULE); | |
867 | return; | |
868 | } | |
869 | reprobe->dev = mvm->trans->dev; | |
870 | INIT_WORK(&reprobe->work, iwl_mvm_reprobe_wk); | |
871 | schedule_work(&reprobe->work); | |
b08c1d97 LC |
872 | } else if (mvm->cur_ucode == IWL_UCODE_REGULAR && |
873 | (!fw_error || mvm->restart_fw)) { | |
7498cf4c EP |
874 | /* don't let the transport/FW power down */ |
875 | iwl_mvm_ref(mvm, IWL_MVM_REF_UCODE_DOWN); | |
876 | ||
b08c1d97 | 877 | if (fw_error && mvm->restart_fw > 0) |
291aa7c4 | 878 | mvm->restart_fw--; |
8ca151b5 | 879 | ieee80211_restart_hw(mvm->hw); |
4bfa47f3 EG |
880 | } else if (fw_error) { |
881 | schedule_work(&mvm->fw_error_dump_wk); | |
8ca151b5 JB |
882 | } |
883 | } | |
884 | ||
715c998f EG |
885 | static void iwl_mvm_nic_error(struct iwl_op_mode *op_mode) |
886 | { | |
887 | struct iwl_mvm *mvm = IWL_OP_MODE_GET_MVM(op_mode); | |
888 | ||
889 | iwl_mvm_dump_nic_error_log(mvm); | |
1bd3cbc1 | 890 | |
b08c1d97 | 891 | iwl_mvm_nic_restart(mvm, true); |
715c998f EG |
892 | } |
893 | ||
8ca151b5 JB |
894 | static void iwl_mvm_cmd_queue_full(struct iwl_op_mode *op_mode) |
895 | { | |
715c998f EG |
896 | struct iwl_mvm *mvm = IWL_OP_MODE_GET_MVM(op_mode); |
897 | ||
8ca151b5 | 898 | WARN_ON(1); |
b08c1d97 | 899 | iwl_mvm_nic_restart(mvm, true); |
8ca151b5 JB |
900 | } |
901 | ||
37577fe2 EP |
902 | struct iwl_d0i3_iter_data { |
903 | struct iwl_mvm *mvm; | |
904 | u8 ap_sta_id; | |
905 | u8 vif_count; | |
b2492501 AN |
906 | u8 offloading_tid; |
907 | bool disable_offloading; | |
37577fe2 EP |
908 | }; |
909 | ||
b2492501 AN |
910 | static bool iwl_mvm_disallow_offloading(struct iwl_mvm *mvm, |
911 | struct ieee80211_vif *vif, | |
912 | struct iwl_d0i3_iter_data *iter_data) | |
913 | { | |
914 | struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); | |
915 | struct ieee80211_sta *ap_sta; | |
916 | struct iwl_mvm_sta *mvmsta; | |
917 | u32 available_tids = 0; | |
918 | u8 tid; | |
919 | ||
920 | if (WARN_ON(vif->type != NL80211_IFTYPE_STATION || | |
921 | mvmvif->ap_sta_id == IWL_MVM_STATION_COUNT)) | |
922 | return false; | |
923 | ||
924 | ap_sta = rcu_dereference(mvm->fw_id_to_mac_id[mvmvif->ap_sta_id]); | |
925 | if (IS_ERR_OR_NULL(ap_sta)) | |
926 | return false; | |
927 | ||
928 | mvmsta = iwl_mvm_sta_from_mac80211(ap_sta); | |
929 | spin_lock_bh(&mvmsta->lock); | |
930 | for (tid = 0; tid < IWL_MAX_TID_COUNT; tid++) { | |
931 | struct iwl_mvm_tid_data *tid_data = &mvmsta->tid_data[tid]; | |
932 | ||
933 | /* | |
934 | * in case of pending tx packets, don't use this tid | |
935 | * for offloading in order to prevent reuse of the same | |
936 | * qos seq counters. | |
937 | */ | |
938 | if (iwl_mvm_tid_queued(tid_data)) | |
939 | continue; | |
940 | ||
941 | if (tid_data->state != IWL_AGG_OFF) | |
942 | continue; | |
943 | ||
944 | available_tids |= BIT(tid); | |
945 | } | |
946 | spin_unlock_bh(&mvmsta->lock); | |
947 | ||
948 | /* | |
949 | * disallow protocol offloading if we have no available tid | |
950 | * (with no pending frames and no active aggregation, | |
951 | * as we don't handle "holes" properly - the scheduler needs the | |
952 | * frame's seq number and TFD index to match) | |
953 | */ | |
954 | if (!available_tids) | |
955 | return true; | |
956 | ||
957 | /* for simplicity, just use the first available tid */ | |
958 | iter_data->offloading_tid = ffs(available_tids) - 1; | |
959 | return false; | |
960 | } | |
961 | ||
d6230972 EP |
962 | static void iwl_mvm_enter_d0i3_iterator(void *_data, u8 *mac, |
963 | struct ieee80211_vif *vif) | |
964 | { | |
37577fe2 EP |
965 | struct iwl_d0i3_iter_data *data = _data; |
966 | struct iwl_mvm *mvm = data->mvm; | |
967 | struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); | |
d6230972 EP |
968 | u32 flags = CMD_ASYNC | CMD_HIGH_PRIO | CMD_SEND_IN_IDLE; |
969 | ||
970 | IWL_DEBUG_RPM(mvm, "entering D0i3 - vif %pM\n", vif->addr); | |
971 | if (vif->type != NL80211_IFTYPE_STATION || | |
972 | !vif->bss_conf.assoc) | |
973 | return; | |
974 | ||
b2492501 AN |
975 | /* |
976 | * in case of pending tx packets or active aggregations, | |
977 | * avoid offloading features in order to prevent reuse of | |
978 | * the same qos seq counters. | |
979 | */ | |
980 | if (iwl_mvm_disallow_offloading(mvm, vif, data)) | |
981 | data->disable_offloading = true; | |
982 | ||
d6230972 | 983 | iwl_mvm_update_d0i3_power_mode(mvm, vif, true, flags); |
8bd22e7b | 984 | iwl_mvm_send_proto_offload(mvm, vif, data->disable_offloading, flags); |
d6230972 EP |
985 | |
986 | /* | |
987 | * on init/association, mvm already configures POWER_TABLE_CMD | |
988 | * and REPLY_MCAST_FILTER_CMD, so currently don't | |
989 | * reconfigure them (we might want to use different | |
990 | * params later on, though). | |
991 | */ | |
37577fe2 EP |
992 | data->ap_sta_id = mvmvif->ap_sta_id; |
993 | data->vif_count++; | |
d6230972 EP |
994 | } |
995 | ||
1a95c8df EP |
996 | static void iwl_mvm_set_wowlan_data(struct iwl_mvm *mvm, |
997 | struct iwl_wowlan_config_cmd_v3 *cmd, | |
998 | struct iwl_d0i3_iter_data *iter_data) | |
999 | { | |
1000 | struct ieee80211_sta *ap_sta; | |
1001 | struct iwl_mvm_sta *mvm_ap_sta; | |
1002 | ||
1003 | if (iter_data->ap_sta_id == IWL_MVM_STATION_COUNT) | |
1004 | return; | |
1005 | ||
1006 | rcu_read_lock(); | |
1007 | ||
1008 | ap_sta = rcu_dereference(mvm->fw_id_to_mac_id[iter_data->ap_sta_id]); | |
1009 | if (IS_ERR_OR_NULL(ap_sta)) | |
1010 | goto out; | |
1011 | ||
1012 | mvm_ap_sta = iwl_mvm_sta_from_mac80211(ap_sta); | |
1013 | cmd->common.is_11n_connection = ap_sta->ht_cap.ht_supported; | |
b2492501 | 1014 | cmd->offloading_tid = iter_data->offloading_tid; |
1a95c8df EP |
1015 | |
1016 | /* | |
1017 | * The d0i3 uCode takes care of the nonqos counters, | |
1018 | * so configure only the qos seq ones. | |
1019 | */ | |
1020 | iwl_mvm_set_wowlan_qos_seq(mvm_ap_sta, &cmd->common); | |
1021 | out: | |
1022 | rcu_read_unlock(); | |
1023 | } | |
b3370d47 EP |
1024 | static int iwl_mvm_enter_d0i3(struct iwl_op_mode *op_mode) |
1025 | { | |
1026 | struct iwl_mvm *mvm = IWL_OP_MODE_GET_MVM(op_mode); | |
98ee7783 | 1027 | u32 flags = CMD_ASYNC | CMD_HIGH_PRIO | CMD_SEND_IN_IDLE; |
b77f06d9 | 1028 | int ret; |
37577fe2 EP |
1029 | struct iwl_d0i3_iter_data d0i3_iter_data = { |
1030 | .mvm = mvm, | |
1031 | }; | |
1a95c8df EP |
1032 | struct iwl_wowlan_config_cmd_v3 wowlan_config_cmd = { |
1033 | .common = { | |
1034 | .wakeup_filter = | |
1035 | cpu_to_le32(IWL_WOWLAN_WAKEUP_RX_FRAME | | |
1036 | IWL_WOWLAN_WAKEUP_BEACON_MISS | | |
1037 | IWL_WOWLAN_WAKEUP_LINK_CHANGE | | |
1038 | IWL_WOWLAN_WAKEUP_BCN_FILTERING), | |
1039 | }, | |
b77f06d9 | 1040 | }; |
98ee7783 AN |
1041 | struct iwl_d3_manager_config d3_cfg_cmd = { |
1042 | .min_sleep_time = cpu_to_le32(1000), | |
1043 | }; | |
b3370d47 EP |
1044 | |
1045 | IWL_DEBUG_RPM(mvm, "MVM entering D0i3\n"); | |
98ee7783 | 1046 | |
b2492501 AN |
1047 | /* make sure we have no running tx while configuring the qos */ |
1048 | set_bit(IWL_MVM_STATUS_IN_D0I3, &mvm->status); | |
1049 | synchronize_net(); | |
1050 | ||
f4cf8680 EP |
1051 | /* |
1052 | * iwl_mvm_ref_sync takes a reference before checking the flag. | |
1053 | * so by checking there is no held reference we prevent a state | |
1054 | * in which iwl_mvm_ref_sync continues successfully while we | |
1055 | * configure the firmware to enter d0i3 | |
1056 | */ | |
1057 | if (iwl_mvm_ref_taken(mvm)) { | |
1058 | IWL_DEBUG_RPM(mvm->trans, "abort d0i3 due to taken ref\n"); | |
1059 | clear_bit(IWL_MVM_STATUS_IN_D0I3, &mvm->status); | |
caf1578a | 1060 | wake_up(&mvm->d0i3_exit_waitq); |
f4cf8680 EP |
1061 | return 1; |
1062 | } | |
1063 | ||
d6230972 EP |
1064 | ieee80211_iterate_active_interfaces_atomic(mvm->hw, |
1065 | IEEE80211_IFACE_ITER_NORMAL, | |
1066 | iwl_mvm_enter_d0i3_iterator, | |
37577fe2 EP |
1067 | &d0i3_iter_data); |
1068 | if (d0i3_iter_data.vif_count == 1) { | |
1069 | mvm->d0i3_ap_sta_id = d0i3_iter_data.ap_sta_id; | |
b2492501 | 1070 | mvm->d0i3_offloading = !d0i3_iter_data.disable_offloading; |
37577fe2 EP |
1071 | } else { |
1072 | WARN_ON_ONCE(d0i3_iter_data.vif_count > 1); | |
1073 | mvm->d0i3_ap_sta_id = IWL_MVM_STATION_COUNT; | |
b2492501 | 1074 | mvm->d0i3_offloading = false; |
37577fe2 | 1075 | } |
d6230972 | 1076 | |
1a95c8df | 1077 | iwl_mvm_set_wowlan_data(mvm, &wowlan_config_cmd, &d0i3_iter_data); |
b77f06d9 EP |
1078 | ret = iwl_mvm_send_cmd_pdu(mvm, WOWLAN_CONFIGURATION, flags, |
1079 | sizeof(wowlan_config_cmd), | |
1080 | &wowlan_config_cmd); | |
1081 | if (ret) | |
1082 | return ret; | |
1083 | ||
98ee7783 AN |
1084 | return iwl_mvm_send_cmd_pdu(mvm, D3_CONFIG_CMD, |
1085 | flags | CMD_MAKE_TRANS_IDLE, | |
1086 | sizeof(d3_cfg_cmd), &d3_cfg_cmd); | |
b3370d47 EP |
1087 | } |
1088 | ||
d6230972 EP |
1089 | static void iwl_mvm_exit_d0i3_iterator(void *_data, u8 *mac, |
1090 | struct ieee80211_vif *vif) | |
1091 | { | |
1092 | struct iwl_mvm *mvm = _data; | |
1093 | u32 flags = CMD_ASYNC | CMD_HIGH_PRIO; | |
1094 | ||
1095 | IWL_DEBUG_RPM(mvm, "exiting D0i3 - vif %pM\n", vif->addr); | |
1096 | if (vif->type != NL80211_IFTYPE_STATION || | |
1097 | !vif->bss_conf.assoc) | |
1098 | return; | |
1099 | ||
1100 | iwl_mvm_update_d0i3_power_mode(mvm, vif, false, flags); | |
1101 | } | |
1102 | ||
37577fe2 EP |
1103 | static void iwl_mvm_d0i3_disconnect_iter(void *data, u8 *mac, |
1104 | struct ieee80211_vif *vif) | |
1105 | { | |
1106 | struct iwl_mvm *mvm = data; | |
1107 | struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); | |
1108 | ||
1109 | if (vif->type == NL80211_IFTYPE_STATION && vif->bss_conf.assoc && | |
1110 | mvm->d0i3_ap_sta_id == mvmvif->ap_sta_id) | |
1111 | ieee80211_connection_loss(vif); | |
1112 | } | |
1113 | ||
b2492501 AN |
1114 | void iwl_mvm_d0i3_enable_tx(struct iwl_mvm *mvm, __le16 *qos_seq) |
1115 | { | |
1116 | struct ieee80211_sta *sta = NULL; | |
1117 | struct iwl_mvm_sta *mvm_ap_sta; | |
1118 | int i; | |
1119 | bool wake_queues = false; | |
1120 | ||
1121 | lockdep_assert_held(&mvm->mutex); | |
1122 | ||
1123 | spin_lock_bh(&mvm->d0i3_tx_lock); | |
1124 | ||
1125 | if (mvm->d0i3_ap_sta_id == IWL_MVM_STATION_COUNT) | |
1126 | goto out; | |
1127 | ||
1128 | IWL_DEBUG_RPM(mvm, "re-enqueue packets\n"); | |
1129 | ||
1130 | /* get the sta in order to update seq numbers and re-enqueue skbs */ | |
1131 | sta = rcu_dereference_protected( | |
1132 | mvm->fw_id_to_mac_id[mvm->d0i3_ap_sta_id], | |
1133 | lockdep_is_held(&mvm->mutex)); | |
1134 | ||
1135 | if (IS_ERR_OR_NULL(sta)) { | |
1136 | sta = NULL; | |
1137 | goto out; | |
1138 | } | |
1139 | ||
1140 | if (mvm->d0i3_offloading && qos_seq) { | |
1141 | /* update qos seq numbers if offloading was enabled */ | |
1142 | mvm_ap_sta = (struct iwl_mvm_sta *)sta->drv_priv; | |
1143 | for (i = 0; i < IWL_MAX_TID_COUNT; i++) { | |
1144 | u16 seq = le16_to_cpu(qos_seq[i]); | |
1145 | /* firmware stores last-used one, we store next one */ | |
1146 | seq += 0x10; | |
1147 | mvm_ap_sta->tid_data[i].seq_number = seq; | |
1148 | } | |
1149 | } | |
1150 | out: | |
1151 | /* re-enqueue (or drop) all packets */ | |
1152 | while (!skb_queue_empty(&mvm->d0i3_tx)) { | |
1153 | struct sk_buff *skb = __skb_dequeue(&mvm->d0i3_tx); | |
1154 | ||
1155 | if (!sta || iwl_mvm_tx_skb(mvm, skb, sta)) | |
1156 | ieee80211_free_txskb(mvm->hw, skb); | |
1157 | ||
1158 | /* if the skb_queue is not empty, we need to wake queues */ | |
1159 | wake_queues = true; | |
1160 | } | |
1161 | clear_bit(IWL_MVM_STATUS_IN_D0I3, &mvm->status); | |
1162 | wake_up(&mvm->d0i3_exit_waitq); | |
1163 | mvm->d0i3_ap_sta_id = IWL_MVM_STATION_COUNT; | |
1164 | if (wake_queues) | |
1165 | ieee80211_wake_queues(mvm->hw); | |
1166 | ||
1167 | spin_unlock_bh(&mvm->d0i3_tx_lock); | |
1168 | } | |
1169 | ||
37577fe2 EP |
1170 | static void iwl_mvm_d0i3_exit_work(struct work_struct *wk) |
1171 | { | |
1172 | struct iwl_mvm *mvm = container_of(wk, struct iwl_mvm, d0i3_exit_work); | |
1173 | struct iwl_host_cmd get_status_cmd = { | |
1174 | .id = WOWLAN_GET_STATUSES, | |
a1022927 | 1175 | .flags = CMD_HIGH_PRIO | CMD_WANT_SKB, |
37577fe2 | 1176 | }; |
3afec639 | 1177 | struct iwl_wowlan_status *status; |
37577fe2 EP |
1178 | int ret; |
1179 | u32 disconnection_reasons, wakeup_reasons; | |
b2492501 | 1180 | __le16 *qos_seq = NULL; |
37577fe2 EP |
1181 | |
1182 | mutex_lock(&mvm->mutex); | |
1183 | ret = iwl_mvm_send_cmd(mvm, &get_status_cmd); | |
1184 | if (ret) | |
1185 | goto out; | |
1186 | ||
1187 | if (!get_status_cmd.resp_pkt) | |
1188 | goto out; | |
1189 | ||
1190 | status = (void *)get_status_cmd.resp_pkt->data; | |
1191 | wakeup_reasons = le32_to_cpu(status->wakeup_reasons); | |
b2492501 | 1192 | qos_seq = status->qos_seq_ctr; |
37577fe2 EP |
1193 | |
1194 | IWL_DEBUG_RPM(mvm, "wakeup reasons: 0x%x\n", wakeup_reasons); | |
1195 | ||
1196 | disconnection_reasons = | |
1197 | IWL_WOWLAN_WAKEUP_BY_DISCONNECTION_ON_MISSED_BEACON | | |
1198 | IWL_WOWLAN_WAKEUP_BY_DISCONNECTION_ON_DEAUTH; | |
1199 | if (wakeup_reasons & disconnection_reasons) | |
1200 | ieee80211_iterate_active_interfaces( | |
1201 | mvm->hw, IEEE80211_IFACE_ITER_NORMAL, | |
1202 | iwl_mvm_d0i3_disconnect_iter, mvm); | |
1203 | ||
1204 | iwl_free_resp(&get_status_cmd); | |
1205 | out: | |
b2492501 | 1206 | iwl_mvm_d0i3_enable_tx(mvm, qos_seq); |
d15a747f | 1207 | iwl_mvm_unref(mvm, IWL_MVM_REF_EXIT_WORK); |
37577fe2 EP |
1208 | mutex_unlock(&mvm->mutex); |
1209 | } | |
1210 | ||
d15a747f | 1211 | int _iwl_mvm_exit_d0i3(struct iwl_mvm *mvm) |
b3370d47 | 1212 | { |
98ee7783 AN |
1213 | u32 flags = CMD_ASYNC | CMD_HIGH_PRIO | CMD_SEND_IN_IDLE | |
1214 | CMD_WAKE_UP_TRANS; | |
d6230972 | 1215 | int ret; |
b3370d47 EP |
1216 | |
1217 | IWL_DEBUG_RPM(mvm, "MVM exiting D0i3\n"); | |
98ee7783 | 1218 | |
d15a747f EP |
1219 | mutex_lock(&mvm->d0i3_suspend_mutex); |
1220 | if (test_bit(D0I3_DEFER_WAKEUP, &mvm->d0i3_suspend_flags)) { | |
1221 | IWL_DEBUG_RPM(mvm, "Deferring d0i3 exit until resume\n"); | |
1222 | __set_bit(D0I3_PENDING_WAKEUP, &mvm->d0i3_suspend_flags); | |
1223 | mutex_unlock(&mvm->d0i3_suspend_mutex); | |
1224 | return 0; | |
1225 | } | |
1226 | mutex_unlock(&mvm->d0i3_suspend_mutex); | |
1227 | ||
d6230972 EP |
1228 | ret = iwl_mvm_send_cmd_pdu(mvm, D0I3_END_CMD, flags, 0, NULL); |
1229 | if (ret) | |
37577fe2 | 1230 | goto out; |
d6230972 EP |
1231 | |
1232 | ieee80211_iterate_active_interfaces_atomic(mvm->hw, | |
1233 | IEEE80211_IFACE_ITER_NORMAL, | |
1234 | iwl_mvm_exit_d0i3_iterator, | |
1235 | mvm); | |
37577fe2 EP |
1236 | out: |
1237 | schedule_work(&mvm->d0i3_exit_work); | |
1238 | return ret; | |
b3370d47 EP |
1239 | } |
1240 | ||
d15a747f EP |
1241 | static int iwl_mvm_exit_d0i3(struct iwl_op_mode *op_mode) |
1242 | { | |
1243 | struct iwl_mvm *mvm = IWL_OP_MODE_GET_MVM(op_mode); | |
1244 | ||
1245 | iwl_mvm_ref(mvm, IWL_MVM_REF_EXIT_WORK); | |
1246 | return _iwl_mvm_exit_d0i3(mvm); | |
1247 | } | |
1248 | ||
f14d6b39 JB |
1249 | static void iwl_mvm_napi_add(struct iwl_op_mode *op_mode, |
1250 | struct napi_struct *napi, | |
1251 | struct net_device *napi_dev, | |
1252 | int (*poll)(struct napi_struct *, int), | |
1253 | int weight) | |
1254 | { | |
1255 | struct iwl_mvm *mvm = IWL_OP_MODE_GET_MVM(op_mode); | |
1256 | ||
1257 | ieee80211_napi_add(mvm->hw, napi, napi_dev, poll, weight); | |
1258 | } | |
1259 | ||
8ca151b5 JB |
1260 | static const struct iwl_op_mode_ops iwl_mvm_ops = { |
1261 | .start = iwl_op_mode_mvm_start, | |
1262 | .stop = iwl_op_mode_mvm_stop, | |
1263 | .rx = iwl_mvm_rx_dispatch, | |
1264 | .queue_full = iwl_mvm_stop_sw_queue, | |
1265 | .queue_not_full = iwl_mvm_wake_sw_queue, | |
1266 | .hw_rf_kill = iwl_mvm_set_hw_rfkill_state, | |
1267 | .free_skb = iwl_mvm_free_skb, | |
1268 | .nic_error = iwl_mvm_nic_error, | |
1269 | .cmd_queue_full = iwl_mvm_cmd_queue_full, | |
1270 | .nic_config = iwl_mvm_nic_config, | |
b3370d47 EP |
1271 | .enter_d0i3 = iwl_mvm_enter_d0i3, |
1272 | .exit_d0i3 = iwl_mvm_exit_d0i3, | |
f14d6b39 | 1273 | .napi_add = iwl_mvm_napi_add, |
8ca151b5 | 1274 | }; |