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 *
8 * Copyright(c) 2012 - 2014, 2018 - 2020 Intel Corporation. All rights reserved.
9 * Copyright(c) 2013 - 2015 Intel Mobile Communications GmbH
10 * Copyright(c) 2016 - 2017 Intel Deutschland GmbH
11 *
12 * This program is free software; you can redistribute it and/or modify
13 * it under the terms of version 2 of the GNU General Public License as
14 * published by the Free Software Foundation.
15 *
16 * This program is distributed in the hope that it will be useful, but
17 * WITHOUT ANY WARRANTY; without even the implied warranty of
18 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
19 * General Public License for more details.
20 *
21 * The full GNU General Public License is included in this distribution
22 * in the file called COPYING.
23 *
24 * Contact Information:
25 * Intel Linux Wireless <linuxwifi@intel.com>
26 * Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497
27 *
28 * BSD LICENSE
29 *
30 * Copyright(c) 2012 - 2014, 2018 - 2020 Intel Corporation. All rights reserved.
31 * Copyright(c) 2013 - 2015 Intel Mobile Communications GmbH
32 * Copyright(c) 2016 - 2017 Intel Deutschland GmbH
33 * All rights reserved.
34 *
35 * Redistribution and use in source and binary forms, with or without
36 * modification, are permitted provided that the following conditions
37 * are met:
38 *
39 * * Redistributions of source code must retain the above copyright
40 * notice, this list of conditions and the following disclaimer.
41 * * Redistributions in binary form must reproduce the above copyright
42 * notice, this list of conditions and the following disclaimer in
43 * the documentation and/or other materials provided with the
44 * distribution.
45 * * Neither the name Intel Corporation nor the names of its
46 * contributors may be used to endorse or promote products derived
47 * from this software without specific prior written permission.
48 *
49 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
50 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
51 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
52 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
53 * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
54 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
55 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
56 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
57 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
58 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
59 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
60 *
61 *****************************************************************************/
62 #include <linux/module.h>
63 #include <linux/vmalloc.h>
64 #include <net/mac80211.h>
65
66 #include "fw/notif-wait.h"
67 #include "iwl-trans.h"
68 #include "iwl-op-mode.h"
69 #include "fw/img.h"
70 #include "iwl-debug.h"
71 #include "iwl-drv.h"
72 #include "iwl-modparams.h"
73 #include "mvm.h"
74 #include "iwl-phy-db.h"
75 #include "iwl-eeprom-parse.h"
76 #include "iwl-csr.h"
77 #include "iwl-io.h"
78 #include "iwl-prph.h"
79 #include "rs.h"
80 #include "fw/api/scan.h"
81 #include "time-event.h"
82 #include "fw-api.h"
83 #include "fw/acpi.h"
84
85 #define DRV_DESCRIPTION "The new Intel(R) wireless AGN driver for Linux"
86 MODULE_DESCRIPTION(DRV_DESCRIPTION);
87 MODULE_AUTHOR(DRV_AUTHOR);
88 MODULE_LICENSE("GPL");
89
90 static const struct iwl_op_mode_ops iwl_mvm_ops;
91 static const struct iwl_op_mode_ops iwl_mvm_ops_mq;
92
93 struct iwl_mvm_mod_params iwlmvm_mod_params = {
94 .power_scheme = IWL_POWER_SCHEME_BPS,
95 /* rest of fields are 0 by default */
96 };
97
98 module_param_named(init_dbg, iwlmvm_mod_params.init_dbg, bool, 0444);
99 MODULE_PARM_DESC(init_dbg,
100 "set to true to debug an ASSERT in INIT fw (default: false");
101 module_param_named(power_scheme, iwlmvm_mod_params.power_scheme, int, 0444);
102 MODULE_PARM_DESC(power_scheme,
103 "power management scheme: 1-active, 2-balanced, 3-low power, default: 2");
104
105 /*
106 * module init and exit functions
107 */
iwl_mvm_init(void)108 static int __init iwl_mvm_init(void)
109 {
110 int ret;
111
112 ret = iwl_mvm_rate_control_register();
113 if (ret) {
114 pr_err("Unable to register rate control algorithm: %d\n", ret);
115 return ret;
116 }
117
118 ret = iwl_opmode_register("iwlmvm", &iwl_mvm_ops);
119 if (ret)
120 pr_err("Unable to register MVM op_mode: %d\n", ret);
121
122 return ret;
123 }
124 module_init(iwl_mvm_init);
125
iwl_mvm_exit(void)126 static void __exit iwl_mvm_exit(void)
127 {
128 iwl_opmode_deregister("iwlmvm");
129 iwl_mvm_rate_control_unregister();
130 }
131 module_exit(iwl_mvm_exit);
132
iwl_mvm_nic_config(struct iwl_op_mode * op_mode)133 static void iwl_mvm_nic_config(struct iwl_op_mode *op_mode)
134 {
135 struct iwl_mvm *mvm = IWL_OP_MODE_GET_MVM(op_mode);
136 struct iwl_trans_debug *dbg = &mvm->trans->dbg;
137 u8 radio_cfg_type, radio_cfg_step, radio_cfg_dash;
138 u32 reg_val = 0;
139 u32 phy_config = iwl_mvm_get_phy_config(mvm);
140
141 radio_cfg_type = (phy_config & FW_PHY_CFG_RADIO_TYPE) >>
142 FW_PHY_CFG_RADIO_TYPE_POS;
143 radio_cfg_step = (phy_config & FW_PHY_CFG_RADIO_STEP) >>
144 FW_PHY_CFG_RADIO_STEP_POS;
145 radio_cfg_dash = (phy_config & FW_PHY_CFG_RADIO_DASH) >>
146 FW_PHY_CFG_RADIO_DASH_POS;
147
148 /* SKU control */
149 reg_val |= CSR_HW_REV_STEP(mvm->trans->hw_rev) <<
150 CSR_HW_IF_CONFIG_REG_POS_MAC_STEP;
151 reg_val |= CSR_HW_REV_DASH(mvm->trans->hw_rev) <<
152 CSR_HW_IF_CONFIG_REG_POS_MAC_DASH;
153
154 /* radio configuration */
155 reg_val |= radio_cfg_type << CSR_HW_IF_CONFIG_REG_POS_PHY_TYPE;
156 reg_val |= radio_cfg_step << CSR_HW_IF_CONFIG_REG_POS_PHY_STEP;
157 reg_val |= radio_cfg_dash << CSR_HW_IF_CONFIG_REG_POS_PHY_DASH;
158
159 WARN_ON((radio_cfg_type << CSR_HW_IF_CONFIG_REG_POS_PHY_TYPE) &
160 ~CSR_HW_IF_CONFIG_REG_MSK_PHY_TYPE);
161
162 /*
163 * TODO: Bits 7-8 of CSR in 8000 HW family and higher set the ADC
164 * sampling, and shouldn't be set to any non-zero value.
165 * The same is supposed to be true of the other HW, but unsetting
166 * them (such as the 7260) causes automatic tests to fail on seemingly
167 * unrelated errors. Need to further investigate this, but for now
168 * we'll separate cases.
169 */
170 if (mvm->trans->trans_cfg->device_family < IWL_DEVICE_FAMILY_8000)
171 reg_val |= CSR_HW_IF_CONFIG_REG_BIT_RADIO_SI;
172
173 if (iwl_fw_dbg_is_d3_debug_enabled(&mvm->fwrt) ||
174 (iwl_trans_dbg_ini_valid(mvm->trans) &&
175 dbg->fw_mon_cfg[IWL_FW_INI_ALLOCATION_ID_INTERNAL].buf_location)
176 )
177 reg_val |= CSR_HW_IF_CONFIG_REG_D3_DEBUG;
178
179 iwl_trans_set_bits_mask(mvm->trans, CSR_HW_IF_CONFIG_REG,
180 CSR_HW_IF_CONFIG_REG_MSK_MAC_DASH |
181 CSR_HW_IF_CONFIG_REG_MSK_MAC_STEP |
182 CSR_HW_IF_CONFIG_REG_MSK_PHY_TYPE |
183 CSR_HW_IF_CONFIG_REG_MSK_PHY_STEP |
184 CSR_HW_IF_CONFIG_REG_MSK_PHY_DASH |
185 CSR_HW_IF_CONFIG_REG_BIT_RADIO_SI |
186 CSR_HW_IF_CONFIG_REG_BIT_MAC_SI |
187 CSR_HW_IF_CONFIG_REG_D3_DEBUG,
188 reg_val);
189
190 IWL_DEBUG_INFO(mvm, "Radio type=0x%x-0x%x-0x%x\n", radio_cfg_type,
191 radio_cfg_step, radio_cfg_dash);
192
193 /*
194 * W/A : NIC is stuck in a reset state after Early PCIe power off
195 * (PCIe power is lost before PERST# is asserted), causing ME FW
196 * to lose ownership and not being able to obtain it back.
197 */
198 if (!mvm->trans->cfg->apmg_not_supported)
199 iwl_set_bits_mask_prph(mvm->trans, APMG_PS_CTRL_REG,
200 APMG_PS_CTRL_EARLY_PWR_OFF_RESET_DIS,
201 ~APMG_PS_CTRL_EARLY_PWR_OFF_RESET_DIS);
202 }
203
204 /**
205 * enum iwl_rx_handler_context context for Rx handler
206 * @RX_HANDLER_SYNC : this means that it will be called in the Rx path
207 * which can't acquire mvm->mutex.
208 * @RX_HANDLER_ASYNC_LOCKED : If the handler needs to hold mvm->mutex
209 * (and only in this case!), it should be set as ASYNC. In that case,
210 * it will be called from a worker with mvm->mutex held.
211 * @RX_HANDLER_ASYNC_UNLOCKED : in case the handler needs to lock the
212 * mutex itself, it will be called from a worker without mvm->mutex held.
213 */
214 enum iwl_rx_handler_context {
215 RX_HANDLER_SYNC,
216 RX_HANDLER_ASYNC_LOCKED,
217 RX_HANDLER_ASYNC_UNLOCKED,
218 };
219
220 /**
221 * struct iwl_rx_handlers handler for FW notification
222 * @cmd_id: command id
223 * @context: see &iwl_rx_handler_context
224 * @fn: the function is called when notification is received
225 */
226 struct iwl_rx_handlers {
227 u16 cmd_id;
228 enum iwl_rx_handler_context context;
229 void (*fn)(struct iwl_mvm *mvm, struct iwl_rx_cmd_buffer *rxb);
230 };
231
232 #define RX_HANDLER(_cmd_id, _fn, _context) \
233 { .cmd_id = _cmd_id, .fn = _fn, .context = _context }
234 #define RX_HANDLER_GRP(_grp, _cmd, _fn, _context) \
235 { .cmd_id = WIDE_ID(_grp, _cmd), .fn = _fn, .context = _context }
236
237 /*
238 * Handlers for fw notifications
239 * Convention: RX_HANDLER(CMD_NAME, iwl_mvm_rx_CMD_NAME
240 * This list should be in order of frequency for performance purposes.
241 *
242 * The handler can be one from three contexts, see &iwl_rx_handler_context
243 */
244 static const struct iwl_rx_handlers iwl_mvm_rx_handlers[] = {
245 RX_HANDLER(TX_CMD, iwl_mvm_rx_tx_cmd, RX_HANDLER_SYNC),
246 RX_HANDLER(BA_NOTIF, iwl_mvm_rx_ba_notif, RX_HANDLER_SYNC),
247
248 RX_HANDLER_GRP(DATA_PATH_GROUP, TLC_MNG_UPDATE_NOTIF,
249 iwl_mvm_tlc_update_notif, RX_HANDLER_SYNC),
250
251 RX_HANDLER(BT_PROFILE_NOTIFICATION, iwl_mvm_rx_bt_coex_notif,
252 RX_HANDLER_ASYNC_LOCKED),
253 RX_HANDLER(BEACON_NOTIFICATION, iwl_mvm_rx_beacon_notif,
254 RX_HANDLER_ASYNC_LOCKED),
255 RX_HANDLER(STATISTICS_NOTIFICATION, iwl_mvm_rx_statistics,
256 RX_HANDLER_ASYNC_LOCKED),
257
258 RX_HANDLER(BA_WINDOW_STATUS_NOTIFICATION_ID,
259 iwl_mvm_window_status_notif, RX_HANDLER_SYNC),
260
261 RX_HANDLER(TIME_EVENT_NOTIFICATION, iwl_mvm_rx_time_event_notif,
262 RX_HANDLER_SYNC),
263 RX_HANDLER_GRP(MAC_CONF_GROUP, SESSION_PROTECTION_NOTIF,
264 iwl_mvm_rx_session_protect_notif, RX_HANDLER_SYNC),
265 RX_HANDLER(MCC_CHUB_UPDATE_CMD, iwl_mvm_rx_chub_update_mcc,
266 RX_HANDLER_ASYNC_LOCKED),
267
268 RX_HANDLER(EOSP_NOTIFICATION, iwl_mvm_rx_eosp_notif, RX_HANDLER_SYNC),
269
270 RX_HANDLER(SCAN_ITERATION_COMPLETE,
271 iwl_mvm_rx_lmac_scan_iter_complete_notif, RX_HANDLER_SYNC),
272 RX_HANDLER(SCAN_OFFLOAD_COMPLETE,
273 iwl_mvm_rx_lmac_scan_complete_notif,
274 RX_HANDLER_ASYNC_LOCKED),
275 RX_HANDLER(MATCH_FOUND_NOTIFICATION, iwl_mvm_rx_scan_match_found,
276 RX_HANDLER_SYNC),
277 RX_HANDLER(SCAN_COMPLETE_UMAC, iwl_mvm_rx_umac_scan_complete_notif,
278 RX_HANDLER_ASYNC_LOCKED),
279 RX_HANDLER(SCAN_ITERATION_COMPLETE_UMAC,
280 iwl_mvm_rx_umac_scan_iter_complete_notif, RX_HANDLER_SYNC),
281
282 RX_HANDLER(CARD_STATE_NOTIFICATION, iwl_mvm_rx_card_state_notif,
283 RX_HANDLER_SYNC),
284
285 RX_HANDLER(MISSED_BEACONS_NOTIFICATION, iwl_mvm_rx_missed_beacons_notif,
286 RX_HANDLER_SYNC),
287
288 RX_HANDLER(REPLY_ERROR, iwl_mvm_rx_fw_error, RX_HANDLER_SYNC),
289 RX_HANDLER(PSM_UAPSD_AP_MISBEHAVING_NOTIFICATION,
290 iwl_mvm_power_uapsd_misbehaving_ap_notif, RX_HANDLER_SYNC),
291 RX_HANDLER(DTS_MEASUREMENT_NOTIFICATION, iwl_mvm_temp_notif,
292 RX_HANDLER_ASYNC_LOCKED),
293 RX_HANDLER_GRP(PHY_OPS_GROUP, DTS_MEASUREMENT_NOTIF_WIDE,
294 iwl_mvm_temp_notif, RX_HANDLER_ASYNC_UNLOCKED),
295 RX_HANDLER_GRP(PHY_OPS_GROUP, CT_KILL_NOTIFICATION,
296 iwl_mvm_ct_kill_notif, RX_HANDLER_SYNC),
297
298 RX_HANDLER(TDLS_CHANNEL_SWITCH_NOTIFICATION, iwl_mvm_rx_tdls_notif,
299 RX_HANDLER_ASYNC_LOCKED),
300 RX_HANDLER(MFUART_LOAD_NOTIFICATION, iwl_mvm_rx_mfuart_notif,
301 RX_HANDLER_SYNC),
302 RX_HANDLER_GRP(LOCATION_GROUP, TOF_RESPONDER_STATS,
303 iwl_mvm_ftm_responder_stats, RX_HANDLER_ASYNC_LOCKED),
304
305 RX_HANDLER_GRP(LOCATION_GROUP, TOF_RANGE_RESPONSE_NOTIF,
306 iwl_mvm_ftm_range_resp, RX_HANDLER_ASYNC_LOCKED),
307 RX_HANDLER_GRP(LOCATION_GROUP, TOF_LC_NOTIF,
308 iwl_mvm_ftm_lc_notif, RX_HANDLER_ASYNC_LOCKED),
309
310 RX_HANDLER_GRP(DEBUG_GROUP, MFU_ASSERT_DUMP_NTF,
311 iwl_mvm_mfu_assert_dump_notif, RX_HANDLER_SYNC),
312 RX_HANDLER_GRP(PROT_OFFLOAD_GROUP, STORED_BEACON_NTF,
313 iwl_mvm_rx_stored_beacon_notif, RX_HANDLER_SYNC),
314 RX_HANDLER_GRP(DATA_PATH_GROUP, MU_GROUP_MGMT_NOTIF,
315 iwl_mvm_mu_mimo_grp_notif, RX_HANDLER_SYNC),
316 RX_HANDLER_GRP(DATA_PATH_GROUP, STA_PM_NOTIF,
317 iwl_mvm_sta_pm_notif, RX_HANDLER_SYNC),
318 RX_HANDLER_GRP(MAC_CONF_GROUP, PROBE_RESPONSE_DATA_NOTIF,
319 iwl_mvm_probe_resp_data_notif,
320 RX_HANDLER_ASYNC_LOCKED),
321 RX_HANDLER_GRP(MAC_CONF_GROUP, CHANNEL_SWITCH_NOA_NOTIF,
322 iwl_mvm_channel_switch_noa_notif,
323 RX_HANDLER_SYNC),
324 };
325 #undef RX_HANDLER
326 #undef RX_HANDLER_GRP
327
328 /* Please keep this array *SORTED* by hex value.
329 * Access is done through binary search
330 */
331 static const struct iwl_hcmd_names iwl_mvm_legacy_names[] = {
332 HCMD_NAME(UCODE_ALIVE_NTFY),
333 HCMD_NAME(REPLY_ERROR),
334 HCMD_NAME(ECHO_CMD),
335 HCMD_NAME(INIT_COMPLETE_NOTIF),
336 HCMD_NAME(PHY_CONTEXT_CMD),
337 HCMD_NAME(DBG_CFG),
338 HCMD_NAME(SCAN_CFG_CMD),
339 HCMD_NAME(SCAN_REQ_UMAC),
340 HCMD_NAME(SCAN_ABORT_UMAC),
341 HCMD_NAME(SCAN_COMPLETE_UMAC),
342 HCMD_NAME(BA_WINDOW_STATUS_NOTIFICATION_ID),
343 HCMD_NAME(ADD_STA_KEY),
344 HCMD_NAME(ADD_STA),
345 HCMD_NAME(REMOVE_STA),
346 HCMD_NAME(FW_GET_ITEM_CMD),
347 HCMD_NAME(TX_CMD),
348 HCMD_NAME(SCD_QUEUE_CFG),
349 HCMD_NAME(TXPATH_FLUSH),
350 HCMD_NAME(MGMT_MCAST_KEY),
351 HCMD_NAME(WEP_KEY),
352 HCMD_NAME(SHARED_MEM_CFG),
353 HCMD_NAME(TDLS_CHANNEL_SWITCH_CMD),
354 HCMD_NAME(MAC_CONTEXT_CMD),
355 HCMD_NAME(TIME_EVENT_CMD),
356 HCMD_NAME(TIME_EVENT_NOTIFICATION),
357 HCMD_NAME(BINDING_CONTEXT_CMD),
358 HCMD_NAME(TIME_QUOTA_CMD),
359 HCMD_NAME(NON_QOS_TX_COUNTER_CMD),
360 HCMD_NAME(LEDS_CMD),
361 HCMD_NAME(LQ_CMD),
362 HCMD_NAME(FW_PAGING_BLOCK_CMD),
363 HCMD_NAME(SCAN_OFFLOAD_REQUEST_CMD),
364 HCMD_NAME(SCAN_OFFLOAD_ABORT_CMD),
365 HCMD_NAME(HOT_SPOT_CMD),
366 HCMD_NAME(SCAN_OFFLOAD_PROFILES_QUERY_CMD),
367 HCMD_NAME(BT_COEX_UPDATE_REDUCED_TXP),
368 HCMD_NAME(BT_COEX_CI),
369 HCMD_NAME(PHY_CONFIGURATION_CMD),
370 HCMD_NAME(CALIB_RES_NOTIF_PHY_DB),
371 HCMD_NAME(PHY_DB_CMD),
372 HCMD_NAME(SCAN_OFFLOAD_COMPLETE),
373 HCMD_NAME(SCAN_OFFLOAD_UPDATE_PROFILES_CMD),
374 HCMD_NAME(POWER_TABLE_CMD),
375 HCMD_NAME(PSM_UAPSD_AP_MISBEHAVING_NOTIFICATION),
376 HCMD_NAME(REPLY_THERMAL_MNG_BACKOFF),
377 HCMD_NAME(DC2DC_CONFIG_CMD),
378 HCMD_NAME(NVM_ACCESS_CMD),
379 HCMD_NAME(BEACON_NOTIFICATION),
380 HCMD_NAME(BEACON_TEMPLATE_CMD),
381 HCMD_NAME(TX_ANT_CONFIGURATION_CMD),
382 HCMD_NAME(BT_CONFIG),
383 HCMD_NAME(STATISTICS_CMD),
384 HCMD_NAME(STATISTICS_NOTIFICATION),
385 HCMD_NAME(EOSP_NOTIFICATION),
386 HCMD_NAME(REDUCE_TX_POWER_CMD),
387 HCMD_NAME(CARD_STATE_NOTIFICATION),
388 HCMD_NAME(MISSED_BEACONS_NOTIFICATION),
389 HCMD_NAME(TDLS_CONFIG_CMD),
390 HCMD_NAME(MAC_PM_POWER_TABLE),
391 HCMD_NAME(TDLS_CHANNEL_SWITCH_NOTIFICATION),
392 HCMD_NAME(MFUART_LOAD_NOTIFICATION),
393 HCMD_NAME(RSS_CONFIG_CMD),
394 HCMD_NAME(SCAN_ITERATION_COMPLETE_UMAC),
395 HCMD_NAME(REPLY_RX_PHY_CMD),
396 HCMD_NAME(REPLY_RX_MPDU_CMD),
397 HCMD_NAME(BAR_FRAME_RELEASE),
398 HCMD_NAME(FRAME_RELEASE),
399 HCMD_NAME(BA_NOTIF),
400 HCMD_NAME(MCC_UPDATE_CMD),
401 HCMD_NAME(MCC_CHUB_UPDATE_CMD),
402 HCMD_NAME(MARKER_CMD),
403 HCMD_NAME(BT_PROFILE_NOTIFICATION),
404 HCMD_NAME(BCAST_FILTER_CMD),
405 HCMD_NAME(MCAST_FILTER_CMD),
406 HCMD_NAME(REPLY_SF_CFG_CMD),
407 HCMD_NAME(REPLY_BEACON_FILTERING_CMD),
408 HCMD_NAME(D3_CONFIG_CMD),
409 HCMD_NAME(PROT_OFFLOAD_CONFIG_CMD),
410 HCMD_NAME(OFFLOADS_QUERY_CMD),
411 HCMD_NAME(REMOTE_WAKE_CONFIG_CMD),
412 HCMD_NAME(MATCH_FOUND_NOTIFICATION),
413 HCMD_NAME(DTS_MEASUREMENT_NOTIFICATION),
414 HCMD_NAME(WOWLAN_PATTERNS),
415 HCMD_NAME(WOWLAN_CONFIGURATION),
416 HCMD_NAME(WOWLAN_TSC_RSC_PARAM),
417 HCMD_NAME(WOWLAN_TKIP_PARAM),
418 HCMD_NAME(WOWLAN_KEK_KCK_MATERIAL),
419 HCMD_NAME(WOWLAN_GET_STATUSES),
420 HCMD_NAME(SCAN_ITERATION_COMPLETE),
421 HCMD_NAME(D0I3_END_CMD),
422 HCMD_NAME(LTR_CONFIG),
423 HCMD_NAME(LDBG_CONFIG_CMD),
424 };
425
426 /* Please keep this array *SORTED* by hex value.
427 * Access is done through binary search
428 */
429 static const struct iwl_hcmd_names iwl_mvm_system_names[] = {
430 HCMD_NAME(SHARED_MEM_CFG_CMD),
431 HCMD_NAME(INIT_EXTENDED_CFG_CMD),
432 HCMD_NAME(FW_ERROR_RECOVERY_CMD),
433 };
434
435 /* Please keep this array *SORTED* by hex value.
436 * Access is done through binary search
437 */
438 static const struct iwl_hcmd_names iwl_mvm_mac_conf_names[] = {
439 HCMD_NAME(CHANNEL_SWITCH_TIME_EVENT_CMD),
440 HCMD_NAME(SESSION_PROTECTION_CMD),
441 HCMD_NAME(SESSION_PROTECTION_NOTIF),
442 HCMD_NAME(CHANNEL_SWITCH_NOA_NOTIF),
443 };
444
445 /* Please keep this array *SORTED* by hex value.
446 * Access is done through binary search
447 */
448 static const struct iwl_hcmd_names iwl_mvm_phy_names[] = {
449 HCMD_NAME(CMD_DTS_MEASUREMENT_TRIGGER_WIDE),
450 HCMD_NAME(CTDP_CONFIG_CMD),
451 HCMD_NAME(TEMP_REPORTING_THRESHOLDS_CMD),
452 HCMD_NAME(GEO_TX_POWER_LIMIT),
453 HCMD_NAME(CT_KILL_NOTIFICATION),
454 HCMD_NAME(DTS_MEASUREMENT_NOTIF_WIDE),
455 };
456
457 /* Please keep this array *SORTED* by hex value.
458 * Access is done through binary search
459 */
460 static const struct iwl_hcmd_names iwl_mvm_data_path_names[] = {
461 HCMD_NAME(DQA_ENABLE_CMD),
462 HCMD_NAME(UPDATE_MU_GROUPS_CMD),
463 HCMD_NAME(TRIGGER_RX_QUEUES_NOTIF_CMD),
464 HCMD_NAME(STA_HE_CTXT_CMD),
465 HCMD_NAME(RFH_QUEUE_CONFIG_CMD),
466 HCMD_NAME(TLC_MNG_CONFIG_CMD),
467 HCMD_NAME(CHEST_COLLECTOR_FILTER_CONFIG_CMD),
468 HCMD_NAME(STA_PM_NOTIF),
469 HCMD_NAME(MU_GROUP_MGMT_NOTIF),
470 HCMD_NAME(RX_QUEUES_NOTIFICATION),
471 };
472
473 /* Please keep this array *SORTED* by hex value.
474 * Access is done through binary search
475 */
476 static const struct iwl_hcmd_names iwl_mvm_location_names[] = {
477 HCMD_NAME(TOF_RANGE_REQ_CMD),
478 HCMD_NAME(TOF_CONFIG_CMD),
479 HCMD_NAME(TOF_RANGE_ABORT_CMD),
480 HCMD_NAME(TOF_RANGE_REQ_EXT_CMD),
481 HCMD_NAME(TOF_RESPONDER_CONFIG_CMD),
482 HCMD_NAME(TOF_RESPONDER_DYN_CONFIG_CMD),
483 HCMD_NAME(TOF_LC_NOTIF),
484 HCMD_NAME(TOF_RESPONDER_STATS),
485 HCMD_NAME(TOF_MCSI_DEBUG_NOTIF),
486 HCMD_NAME(TOF_RANGE_RESPONSE_NOTIF),
487 };
488
489 /* Please keep this array *SORTED* by hex value.
490 * Access is done through binary search
491 */
492 static const struct iwl_hcmd_names iwl_mvm_prot_offload_names[] = {
493 HCMD_NAME(STORED_BEACON_NTF),
494 };
495
496 /* Please keep this array *SORTED* by hex value.
497 * Access is done through binary search
498 */
499 static const struct iwl_hcmd_names iwl_mvm_regulatory_and_nvm_names[] = {
500 HCMD_NAME(NVM_ACCESS_COMPLETE),
501 HCMD_NAME(NVM_GET_INFO),
502 HCMD_NAME(TAS_CONFIG),
503 };
504
505 static const struct iwl_hcmd_arr iwl_mvm_groups[] = {
506 [LEGACY_GROUP] = HCMD_ARR(iwl_mvm_legacy_names),
507 [LONG_GROUP] = HCMD_ARR(iwl_mvm_legacy_names),
508 [SYSTEM_GROUP] = HCMD_ARR(iwl_mvm_system_names),
509 [MAC_CONF_GROUP] = HCMD_ARR(iwl_mvm_mac_conf_names),
510 [PHY_OPS_GROUP] = HCMD_ARR(iwl_mvm_phy_names),
511 [DATA_PATH_GROUP] = HCMD_ARR(iwl_mvm_data_path_names),
512 [LOCATION_GROUP] = HCMD_ARR(iwl_mvm_location_names),
513 [PROT_OFFLOAD_GROUP] = HCMD_ARR(iwl_mvm_prot_offload_names),
514 [REGULATORY_AND_NVM_GROUP] =
515 HCMD_ARR(iwl_mvm_regulatory_and_nvm_names),
516 };
517
518 /* this forward declaration can avoid to export the function */
519 static void iwl_mvm_async_handlers_wk(struct work_struct *wk);
520
iwl_mvm_min_backoff(struct iwl_mvm * mvm)521 static u32 iwl_mvm_min_backoff(struct iwl_mvm *mvm)
522 {
523 const struct iwl_pwr_tx_backoff *backoff = mvm->cfg->pwr_tx_backoffs;
524 u64 dflt_pwr_limit;
525
526 if (!backoff)
527 return 0;
528
529 dflt_pwr_limit = iwl_acpi_get_pwr_limit(mvm->dev);
530
531 while (backoff->pwr) {
532 if (dflt_pwr_limit >= backoff->pwr)
533 return backoff->backoff;
534
535 backoff++;
536 }
537
538 return 0;
539 }
540
iwl_mvm_tx_unblock_dwork(struct work_struct * work)541 static void iwl_mvm_tx_unblock_dwork(struct work_struct *work)
542 {
543 struct iwl_mvm *mvm =
544 container_of(work, struct iwl_mvm, cs_tx_unblock_dwork.work);
545 struct ieee80211_vif *tx_blocked_vif;
546 struct iwl_mvm_vif *mvmvif;
547
548 mutex_lock(&mvm->mutex);
549
550 tx_blocked_vif =
551 rcu_dereference_protected(mvm->csa_tx_blocked_vif,
552 lockdep_is_held(&mvm->mutex));
553
554 if (!tx_blocked_vif)
555 goto unlock;
556
557 mvmvif = iwl_mvm_vif_from_mac80211(tx_blocked_vif);
558 iwl_mvm_modify_all_sta_disable_tx(mvm, mvmvif, false);
559 RCU_INIT_POINTER(mvm->csa_tx_blocked_vif, NULL);
560 unlock:
561 mutex_unlock(&mvm->mutex);
562 }
563
iwl_mvm_fwrt_dump_start(void * ctx)564 static int iwl_mvm_fwrt_dump_start(void *ctx)
565 {
566 struct iwl_mvm *mvm = ctx;
567
568 mutex_lock(&mvm->mutex);
569
570 return 0;
571 }
572
iwl_mvm_fwrt_dump_end(void * ctx)573 static void iwl_mvm_fwrt_dump_end(void *ctx)
574 {
575 struct iwl_mvm *mvm = ctx;
576
577 mutex_unlock(&mvm->mutex);
578 }
579
iwl_mvm_fwrt_fw_running(void * ctx)580 static bool iwl_mvm_fwrt_fw_running(void *ctx)
581 {
582 return iwl_mvm_firmware_running(ctx);
583 }
584
iwl_mvm_fwrt_send_hcmd(void * ctx,struct iwl_host_cmd * host_cmd)585 static int iwl_mvm_fwrt_send_hcmd(void *ctx, struct iwl_host_cmd *host_cmd)
586 {
587 struct iwl_mvm *mvm = (struct iwl_mvm *)ctx;
588 int ret;
589
590 mutex_lock(&mvm->mutex);
591 ret = iwl_mvm_send_cmd(mvm, host_cmd);
592 mutex_unlock(&mvm->mutex);
593
594 return ret;
595 }
596
iwl_mvm_d3_debug_enable(void * ctx)597 static bool iwl_mvm_d3_debug_enable(void *ctx)
598 {
599 return IWL_MVM_D3_DEBUG;
600 }
601
602 static const struct iwl_fw_runtime_ops iwl_mvm_fwrt_ops = {
603 .dump_start = iwl_mvm_fwrt_dump_start,
604 .dump_end = iwl_mvm_fwrt_dump_end,
605 .fw_running = iwl_mvm_fwrt_fw_running,
606 .send_hcmd = iwl_mvm_fwrt_send_hcmd,
607 .d3_debug_enable = iwl_mvm_d3_debug_enable,
608 };
609
610 static struct iwl_op_mode *
iwl_op_mode_mvm_start(struct iwl_trans * trans,const struct iwl_cfg * cfg,const struct iwl_fw * fw,struct dentry * dbgfs_dir)611 iwl_op_mode_mvm_start(struct iwl_trans *trans, const struct iwl_cfg *cfg,
612 const struct iwl_fw *fw, struct dentry *dbgfs_dir)
613 {
614 struct ieee80211_hw *hw;
615 struct iwl_op_mode *op_mode;
616 struct iwl_mvm *mvm;
617 struct iwl_trans_config trans_cfg = {};
618 static const u8 no_reclaim_cmds[] = {
619 TX_CMD,
620 };
621 int err, scan_size;
622 u32 min_backoff;
623 enum iwl_amsdu_size rb_size_default;
624
625 /*
626 * We use IWL_MVM_STATION_COUNT_MAX to check the validity of the station
627 * index all over the driver - check that its value corresponds to the
628 * array size.
629 */
630 BUILD_BUG_ON(ARRAY_SIZE(mvm->fw_id_to_mac_id) !=
631 IWL_MVM_STATION_COUNT_MAX);
632
633 /********************************
634 * 1. Allocating and configuring HW data
635 ********************************/
636 hw = ieee80211_alloc_hw(sizeof(struct iwl_op_mode) +
637 sizeof(struct iwl_mvm),
638 &iwl_mvm_hw_ops);
639 if (!hw)
640 return NULL;
641
642 hw->max_rx_aggregation_subframes = IEEE80211_MAX_AMPDU_BUF;
643
644 if (cfg->max_tx_agg_size)
645 hw->max_tx_aggregation_subframes = cfg->max_tx_agg_size;
646 else
647 hw->max_tx_aggregation_subframes = IEEE80211_MAX_AMPDU_BUF;
648
649 op_mode = hw->priv;
650
651 mvm = IWL_OP_MODE_GET_MVM(op_mode);
652 mvm->dev = trans->dev;
653 mvm->trans = trans;
654 mvm->cfg = cfg;
655 mvm->fw = fw;
656 mvm->hw = hw;
657
658 iwl_fw_runtime_init(&mvm->fwrt, trans, fw, &iwl_mvm_fwrt_ops, mvm,
659 dbgfs_dir);
660
661 mvm->init_status = 0;
662
663 if (iwl_mvm_has_new_rx_api(mvm)) {
664 op_mode->ops = &iwl_mvm_ops_mq;
665 trans->rx_mpdu_cmd_hdr_size =
666 (trans->trans_cfg->device_family >=
667 IWL_DEVICE_FAMILY_AX210) ?
668 sizeof(struct iwl_rx_mpdu_desc) :
669 IWL_RX_DESC_SIZE_V1;
670 } else {
671 op_mode->ops = &iwl_mvm_ops;
672 trans->rx_mpdu_cmd_hdr_size =
673 sizeof(struct iwl_rx_mpdu_res_start);
674
675 if (WARN_ON(trans->num_rx_queues > 1))
676 goto out_free;
677 }
678
679 mvm->fw_restart = iwlwifi_mod_params.fw_restart ? -1 : 0;
680
681 if (iwl_mvm_has_new_tx_api(mvm)) {
682 /*
683 * If we have the new TX/queue allocation API initialize them
684 * all to invalid numbers. We'll rewrite the ones that we need
685 * later, but that doesn't happen for all of them all of the
686 * time (e.g. P2P Device is optional), and if a dynamic queue
687 * ends up getting number 2 (IWL_MVM_DQA_P2P_DEVICE_QUEUE) then
688 * iwl_mvm_is_static_queue() erroneously returns true, and we
689 * might have things getting stuck.
690 */
691 mvm->aux_queue = IWL_MVM_INVALID_QUEUE;
692 mvm->snif_queue = IWL_MVM_INVALID_QUEUE;
693 mvm->probe_queue = IWL_MVM_INVALID_QUEUE;
694 mvm->p2p_dev_queue = IWL_MVM_INVALID_QUEUE;
695 } else {
696 mvm->aux_queue = IWL_MVM_DQA_AUX_QUEUE;
697 mvm->snif_queue = IWL_MVM_DQA_INJECT_MONITOR_QUEUE;
698 mvm->probe_queue = IWL_MVM_DQA_AP_PROBE_RESP_QUEUE;
699 mvm->p2p_dev_queue = IWL_MVM_DQA_P2P_DEVICE_QUEUE;
700 }
701
702 mvm->sf_state = SF_UNINIT;
703 if (iwl_mvm_has_unified_ucode(mvm))
704 iwl_fw_set_current_image(&mvm->fwrt, IWL_UCODE_REGULAR);
705 else
706 iwl_fw_set_current_image(&mvm->fwrt, IWL_UCODE_INIT);
707 mvm->drop_bcn_ap_mode = true;
708
709 mutex_init(&mvm->mutex);
710 spin_lock_init(&mvm->async_handlers_lock);
711 INIT_LIST_HEAD(&mvm->time_event_list);
712 INIT_LIST_HEAD(&mvm->aux_roc_te_list);
713 INIT_LIST_HEAD(&mvm->async_handlers_list);
714 spin_lock_init(&mvm->time_event_lock);
715 INIT_LIST_HEAD(&mvm->ftm_initiator.loc_list);
716 INIT_LIST_HEAD(&mvm->ftm_initiator.pasn_list);
717 INIT_LIST_HEAD(&mvm->resp_pasn_list);
718
719 INIT_WORK(&mvm->async_handlers_wk, iwl_mvm_async_handlers_wk);
720 INIT_WORK(&mvm->roc_done_wk, iwl_mvm_roc_done_wk);
721 INIT_DELAYED_WORK(&mvm->tdls_cs.dwork, iwl_mvm_tdls_ch_switch_work);
722 INIT_DELAYED_WORK(&mvm->scan_timeout_dwork, iwl_mvm_scan_timeout_wk);
723 INIT_WORK(&mvm->add_stream_wk, iwl_mvm_add_new_dqa_stream_wk);
724 INIT_LIST_HEAD(&mvm->add_stream_txqs);
725
726 init_waitqueue_head(&mvm->rx_sync_waitq);
727
728 atomic_set(&mvm->queue_sync_counter, 0);
729
730 SET_IEEE80211_DEV(mvm->hw, mvm->trans->dev);
731
732 spin_lock_init(&mvm->tcm.lock);
733 INIT_DELAYED_WORK(&mvm->tcm.work, iwl_mvm_tcm_work);
734 mvm->tcm.ts = jiffies;
735 mvm->tcm.ll_ts = jiffies;
736 mvm->tcm.uapsd_nonagg_ts = jiffies;
737
738 INIT_DELAYED_WORK(&mvm->cs_tx_unblock_dwork, iwl_mvm_tx_unblock_dwork);
739
740 mvm->cmd_ver.d0i3_resp =
741 iwl_fw_lookup_notif_ver(mvm->fw, LEGACY_GROUP, D0I3_END_CMD,
742 0);
743 /* we only support version 1 */
744 if (WARN_ON_ONCE(mvm->cmd_ver.d0i3_resp > 1))
745 goto out_free;
746
747 mvm->cmd_ver.range_resp =
748 iwl_fw_lookup_notif_ver(mvm->fw, LOCATION_GROUP,
749 TOF_RANGE_RESPONSE_NOTIF, 5);
750 /* we only support up to version 8 */
751 if (WARN_ON_ONCE(mvm->cmd_ver.range_resp > 8))
752 goto out_free;
753
754 /*
755 * Populate the state variables that the transport layer needs
756 * to know about.
757 */
758 trans_cfg.op_mode = op_mode;
759 trans_cfg.no_reclaim_cmds = no_reclaim_cmds;
760 trans_cfg.n_no_reclaim_cmds = ARRAY_SIZE(no_reclaim_cmds);
761
762 if (mvm->trans->trans_cfg->device_family >= IWL_DEVICE_FAMILY_AX210)
763 rb_size_default = IWL_AMSDU_2K;
764 else
765 rb_size_default = IWL_AMSDU_4K;
766
767 switch (iwlwifi_mod_params.amsdu_size) {
768 case IWL_AMSDU_DEF:
769 trans_cfg.rx_buf_size = rb_size_default;
770 break;
771 case IWL_AMSDU_4K:
772 trans_cfg.rx_buf_size = IWL_AMSDU_4K;
773 break;
774 case IWL_AMSDU_8K:
775 trans_cfg.rx_buf_size = IWL_AMSDU_8K;
776 break;
777 case IWL_AMSDU_12K:
778 trans_cfg.rx_buf_size = IWL_AMSDU_12K;
779 break;
780 default:
781 pr_err("%s: Unsupported amsdu_size: %d\n", KBUILD_MODNAME,
782 iwlwifi_mod_params.amsdu_size);
783 trans_cfg.rx_buf_size = rb_size_default;
784 }
785
786 trans->wide_cmd_header = true;
787 trans_cfg.bc_table_dword =
788 mvm->trans->trans_cfg->device_family < IWL_DEVICE_FAMILY_AX210;
789
790 trans_cfg.command_groups = iwl_mvm_groups;
791 trans_cfg.command_groups_size = ARRAY_SIZE(iwl_mvm_groups);
792
793 trans_cfg.cmd_queue = IWL_MVM_DQA_CMD_QUEUE;
794 trans_cfg.cmd_fifo = IWL_MVM_TX_FIFO_CMD;
795 trans_cfg.scd_set_active = true;
796
797 trans_cfg.cb_data_offs = offsetof(struct ieee80211_tx_info,
798 driver_data[2]);
799
800 trans_cfg.sw_csum_tx = IWL_MVM_SW_TX_CSUM_OFFLOAD;
801
802 /* Set a short watchdog for the command queue */
803 trans_cfg.cmd_q_wdg_timeout =
804 iwl_mvm_get_wd_timeout(mvm, NULL, false, true);
805
806 snprintf(mvm->hw->wiphy->fw_version,
807 sizeof(mvm->hw->wiphy->fw_version),
808 "%s", fw->fw_version);
809
810 /* Configure transport layer */
811 iwl_trans_configure(mvm->trans, &trans_cfg);
812
813 trans->rx_mpdu_cmd = REPLY_RX_MPDU_CMD;
814 trans->dbg.dest_tlv = mvm->fw->dbg.dest_tlv;
815 trans->dbg.n_dest_reg = mvm->fw->dbg.n_dest_reg;
816 memcpy(trans->dbg.conf_tlv, mvm->fw->dbg.conf_tlv,
817 sizeof(trans->dbg.conf_tlv));
818 trans->dbg.trigger_tlv = mvm->fw->dbg.trigger_tlv;
819
820 trans->iml = mvm->fw->iml;
821 trans->iml_len = mvm->fw->iml_len;
822
823 /* set up notification wait support */
824 iwl_notification_wait_init(&mvm->notif_wait);
825
826 /* Init phy db */
827 mvm->phy_db = iwl_phy_db_init(trans);
828 if (!mvm->phy_db) {
829 IWL_ERR(mvm, "Cannot init phy_db\n");
830 goto out_free;
831 }
832
833 IWL_INFO(mvm, "Detected %s, REV=0x%X\n",
834 mvm->trans->name, mvm->trans->hw_rev);
835
836 if (iwlwifi_mod_params.nvm_file)
837 mvm->nvm_file_name = iwlwifi_mod_params.nvm_file;
838 else
839 IWL_DEBUG_EEPROM(mvm->trans->dev,
840 "working without external nvm file\n");
841
842 err = iwl_trans_start_hw(mvm->trans);
843 if (err)
844 goto out_free;
845
846 mutex_lock(&mvm->mutex);
847 err = iwl_run_init_mvm_ucode(mvm, true);
848 if (err && err != -ERFKILL)
849 iwl_fw_dbg_error_collect(&mvm->fwrt, FW_DBG_TRIGGER_DRIVER);
850 if (!iwlmvm_mod_params.init_dbg || !err)
851 iwl_mvm_stop_device(mvm);
852 mutex_unlock(&mvm->mutex);
853 if (err < 0) {
854 IWL_ERR(mvm, "Failed to run INIT ucode: %d\n", err);
855 goto out_free;
856 }
857
858 scan_size = iwl_mvm_scan_size(mvm);
859
860 mvm->scan_cmd = kmalloc(scan_size, GFP_KERNEL);
861 if (!mvm->scan_cmd)
862 goto out_free;
863
864 /* invalidate ids to prevent accidental removal of sta_id 0 */
865 mvm->aux_sta.sta_id = IWL_MVM_INVALID_STA;
866 mvm->snif_sta.sta_id = IWL_MVM_INVALID_STA;
867
868 /* Set EBS as successful as long as not stated otherwise by the FW. */
869 mvm->last_ebs_successful = true;
870
871 err = iwl_mvm_mac_setup_register(mvm);
872 if (err)
873 goto out_free;
874 mvm->hw_registered = true;
875
876 min_backoff = iwl_mvm_min_backoff(mvm);
877 iwl_mvm_thermal_initialize(mvm, min_backoff);
878
879 iwl_mvm_dbgfs_register(mvm, dbgfs_dir);
880
881 if (!iwl_mvm_has_new_rx_stats_api(mvm))
882 memset(&mvm->rx_stats_v3, 0,
883 sizeof(struct mvm_statistics_rx_v3));
884 else
885 memset(&mvm->rx_stats, 0, sizeof(struct mvm_statistics_rx));
886
887 iwl_mvm_toggle_tx_ant(mvm, &mvm->mgmt_last_antenna_idx);
888
889 return op_mode;
890
891 out_free:
892 iwl_fw_flush_dumps(&mvm->fwrt);
893 iwl_fw_runtime_free(&mvm->fwrt);
894
895 if (iwlmvm_mod_params.init_dbg)
896 return op_mode;
897 iwl_phy_db_free(mvm->phy_db);
898 kfree(mvm->scan_cmd);
899 iwl_trans_op_mode_leave(trans);
900
901 ieee80211_free_hw(mvm->hw);
902 return NULL;
903 }
904
iwl_op_mode_mvm_stop(struct iwl_op_mode * op_mode)905 static void iwl_op_mode_mvm_stop(struct iwl_op_mode *op_mode)
906 {
907 struct iwl_mvm *mvm = IWL_OP_MODE_GET_MVM(op_mode);
908 int i;
909
910 iwl_mvm_leds_exit(mvm);
911
912 iwl_mvm_thermal_exit(mvm);
913
914 ieee80211_unregister_hw(mvm->hw);
915
916 kfree(mvm->scan_cmd);
917 kfree(mvm->mcast_filter_cmd);
918 mvm->mcast_filter_cmd = NULL;
919
920 kfree(mvm->error_recovery_buf);
921 mvm->error_recovery_buf = NULL;
922
923 iwl_trans_op_mode_leave(mvm->trans);
924
925 iwl_phy_db_free(mvm->phy_db);
926 mvm->phy_db = NULL;
927
928 kfree(mvm->nvm_data);
929 for (i = 0; i < NVM_MAX_NUM_SECTIONS; i++)
930 kfree(mvm->nvm_sections[i].data);
931
932 cancel_delayed_work_sync(&mvm->tcm.work);
933
934 iwl_fw_runtime_free(&mvm->fwrt);
935 mutex_destroy(&mvm->mutex);
936
937 ieee80211_free_hw(mvm->hw);
938 }
939
940 struct iwl_async_handler_entry {
941 struct list_head list;
942 struct iwl_rx_cmd_buffer rxb;
943 enum iwl_rx_handler_context context;
944 void (*fn)(struct iwl_mvm *mvm, struct iwl_rx_cmd_buffer *rxb);
945 };
946
iwl_mvm_async_handlers_purge(struct iwl_mvm * mvm)947 void iwl_mvm_async_handlers_purge(struct iwl_mvm *mvm)
948 {
949 struct iwl_async_handler_entry *entry, *tmp;
950
951 spin_lock_bh(&mvm->async_handlers_lock);
952 list_for_each_entry_safe(entry, tmp, &mvm->async_handlers_list, list) {
953 iwl_free_rxb(&entry->rxb);
954 list_del(&entry->list);
955 kfree(entry);
956 }
957 spin_unlock_bh(&mvm->async_handlers_lock);
958 }
959
iwl_mvm_async_handlers_wk(struct work_struct * wk)960 static void iwl_mvm_async_handlers_wk(struct work_struct *wk)
961 {
962 struct iwl_mvm *mvm =
963 container_of(wk, struct iwl_mvm, async_handlers_wk);
964 struct iwl_async_handler_entry *entry, *tmp;
965 LIST_HEAD(local_list);
966
967 /* Ensure that we are not in stop flow (check iwl_mvm_mac_stop) */
968
969 /*
970 * Sync with Rx path with a lock. Remove all the entries from this list,
971 * add them to a local one (lock free), and then handle them.
972 */
973 spin_lock_bh(&mvm->async_handlers_lock);
974 list_splice_init(&mvm->async_handlers_list, &local_list);
975 spin_unlock_bh(&mvm->async_handlers_lock);
976
977 list_for_each_entry_safe(entry, tmp, &local_list, list) {
978 if (entry->context == RX_HANDLER_ASYNC_LOCKED)
979 mutex_lock(&mvm->mutex);
980 entry->fn(mvm, &entry->rxb);
981 iwl_free_rxb(&entry->rxb);
982 list_del(&entry->list);
983 if (entry->context == RX_HANDLER_ASYNC_LOCKED)
984 mutex_unlock(&mvm->mutex);
985 kfree(entry);
986 }
987 }
988
iwl_mvm_rx_check_trigger(struct iwl_mvm * mvm,struct iwl_rx_packet * pkt)989 static inline void iwl_mvm_rx_check_trigger(struct iwl_mvm *mvm,
990 struct iwl_rx_packet *pkt)
991 {
992 struct iwl_fw_dbg_trigger_tlv *trig;
993 struct iwl_fw_dbg_trigger_cmd *cmds_trig;
994 int i;
995
996 trig = iwl_fw_dbg_trigger_on(&mvm->fwrt, NULL,
997 FW_DBG_TRIGGER_FW_NOTIF);
998 if (!trig)
999 return;
1000
1001 cmds_trig = (void *)trig->data;
1002
1003 for (i = 0; i < ARRAY_SIZE(cmds_trig->cmds); i++) {
1004 /* don't collect on CMD 0 */
1005 if (!cmds_trig->cmds[i].cmd_id)
1006 break;
1007
1008 if (cmds_trig->cmds[i].cmd_id != pkt->hdr.cmd ||
1009 cmds_trig->cmds[i].group_id != pkt->hdr.group_id)
1010 continue;
1011
1012 iwl_fw_dbg_collect_trig(&mvm->fwrt, trig,
1013 "CMD 0x%02x.%02x received",
1014 pkt->hdr.group_id, pkt->hdr.cmd);
1015 break;
1016 }
1017 }
1018
iwl_mvm_rx_common(struct iwl_mvm * mvm,struct iwl_rx_cmd_buffer * rxb,struct iwl_rx_packet * pkt)1019 static void iwl_mvm_rx_common(struct iwl_mvm *mvm,
1020 struct iwl_rx_cmd_buffer *rxb,
1021 struct iwl_rx_packet *pkt)
1022 {
1023 int i;
1024 union iwl_dbg_tlv_tp_data tp_data = { .fw_pkt = pkt };
1025
1026 iwl_dbg_tlv_time_point(&mvm->fwrt,
1027 IWL_FW_INI_TIME_POINT_FW_RSP_OR_NOTIF, &tp_data);
1028 iwl_mvm_rx_check_trigger(mvm, pkt);
1029
1030 /*
1031 * Do the notification wait before RX handlers so
1032 * even if the RX handler consumes the RXB we have
1033 * access to it in the notification wait entry.
1034 */
1035 iwl_notification_wait_notify(&mvm->notif_wait, pkt);
1036
1037 for (i = 0; i < ARRAY_SIZE(iwl_mvm_rx_handlers); i++) {
1038 const struct iwl_rx_handlers *rx_h = &iwl_mvm_rx_handlers[i];
1039 struct iwl_async_handler_entry *entry;
1040
1041 if (rx_h->cmd_id != WIDE_ID(pkt->hdr.group_id, pkt->hdr.cmd))
1042 continue;
1043
1044 if (rx_h->context == RX_HANDLER_SYNC) {
1045 rx_h->fn(mvm, rxb);
1046 return;
1047 }
1048
1049 entry = kzalloc(sizeof(*entry), GFP_ATOMIC);
1050 /* we can't do much... */
1051 if (!entry)
1052 return;
1053
1054 entry->rxb._page = rxb_steal_page(rxb);
1055 entry->rxb._offset = rxb->_offset;
1056 entry->rxb._rx_page_order = rxb->_rx_page_order;
1057 entry->fn = rx_h->fn;
1058 entry->context = rx_h->context;
1059 spin_lock(&mvm->async_handlers_lock);
1060 list_add_tail(&entry->list, &mvm->async_handlers_list);
1061 spin_unlock(&mvm->async_handlers_lock);
1062 schedule_work(&mvm->async_handlers_wk);
1063 break;
1064 }
1065 }
1066
iwl_mvm_rx(struct iwl_op_mode * op_mode,struct napi_struct * napi,struct iwl_rx_cmd_buffer * rxb)1067 static void iwl_mvm_rx(struct iwl_op_mode *op_mode,
1068 struct napi_struct *napi,
1069 struct iwl_rx_cmd_buffer *rxb)
1070 {
1071 struct iwl_rx_packet *pkt = rxb_addr(rxb);
1072 struct iwl_mvm *mvm = IWL_OP_MODE_GET_MVM(op_mode);
1073 u16 cmd = WIDE_ID(pkt->hdr.group_id, pkt->hdr.cmd);
1074
1075 if (likely(cmd == WIDE_ID(LEGACY_GROUP, REPLY_RX_MPDU_CMD)))
1076 iwl_mvm_rx_rx_mpdu(mvm, napi, rxb);
1077 else if (cmd == WIDE_ID(LEGACY_GROUP, REPLY_RX_PHY_CMD))
1078 iwl_mvm_rx_rx_phy_cmd(mvm, rxb);
1079 else
1080 iwl_mvm_rx_common(mvm, rxb, pkt);
1081 }
1082
iwl_mvm_rx_mq(struct iwl_op_mode * op_mode,struct napi_struct * napi,struct iwl_rx_cmd_buffer * rxb)1083 static void iwl_mvm_rx_mq(struct iwl_op_mode *op_mode,
1084 struct napi_struct *napi,
1085 struct iwl_rx_cmd_buffer *rxb)
1086 {
1087 struct iwl_rx_packet *pkt = rxb_addr(rxb);
1088 struct iwl_mvm *mvm = IWL_OP_MODE_GET_MVM(op_mode);
1089 u16 cmd = WIDE_ID(pkt->hdr.group_id, pkt->hdr.cmd);
1090
1091 if (likely(cmd == WIDE_ID(LEGACY_GROUP, REPLY_RX_MPDU_CMD)))
1092 iwl_mvm_rx_mpdu_mq(mvm, napi, rxb, 0);
1093 else if (unlikely(cmd == WIDE_ID(DATA_PATH_GROUP,
1094 RX_QUEUES_NOTIFICATION)))
1095 iwl_mvm_rx_queue_notif(mvm, napi, rxb, 0);
1096 else if (cmd == WIDE_ID(LEGACY_GROUP, FRAME_RELEASE))
1097 iwl_mvm_rx_frame_release(mvm, napi, rxb, 0);
1098 else if (cmd == WIDE_ID(LEGACY_GROUP, BAR_FRAME_RELEASE))
1099 iwl_mvm_rx_bar_frame_release(mvm, napi, rxb, 0);
1100 else if (cmd == WIDE_ID(DATA_PATH_GROUP, RX_NO_DATA_NOTIF))
1101 iwl_mvm_rx_monitor_no_data(mvm, napi, rxb, 0);
1102 else
1103 iwl_mvm_rx_common(mvm, rxb, pkt);
1104 }
1105
iwl_mvm_async_cb(struct iwl_op_mode * op_mode,const struct iwl_device_cmd * cmd)1106 static void iwl_mvm_async_cb(struct iwl_op_mode *op_mode,
1107 const struct iwl_device_cmd *cmd)
1108 {
1109 struct iwl_mvm *mvm = IWL_OP_MODE_GET_MVM(op_mode);
1110
1111 /*
1112 * For now, we only set the CMD_WANT_ASYNC_CALLBACK for ADD_STA
1113 * commands that need to block the Tx queues.
1114 */
1115 iwl_trans_block_txq_ptrs(mvm->trans, false);
1116 }
1117
iwl_mvm_is_static_queue(struct iwl_mvm * mvm,int queue)1118 static int iwl_mvm_is_static_queue(struct iwl_mvm *mvm, int queue)
1119 {
1120 return queue == mvm->aux_queue || queue == mvm->probe_queue ||
1121 queue == mvm->p2p_dev_queue || queue == mvm->snif_queue;
1122 }
1123
iwl_mvm_queue_state_change(struct iwl_op_mode * op_mode,int hw_queue,bool start)1124 static void iwl_mvm_queue_state_change(struct iwl_op_mode *op_mode,
1125 int hw_queue, bool start)
1126 {
1127 struct iwl_mvm *mvm = IWL_OP_MODE_GET_MVM(op_mode);
1128 struct ieee80211_sta *sta;
1129 struct ieee80211_txq *txq;
1130 struct iwl_mvm_txq *mvmtxq;
1131 int i;
1132 unsigned long tid_bitmap;
1133 struct iwl_mvm_sta *mvmsta;
1134 u8 sta_id;
1135
1136 sta_id = iwl_mvm_has_new_tx_api(mvm) ?
1137 mvm->tvqm_info[hw_queue].sta_id :
1138 mvm->queue_info[hw_queue].ra_sta_id;
1139
1140 if (WARN_ON_ONCE(sta_id >= mvm->fw->ucode_capa.num_stations))
1141 return;
1142
1143 rcu_read_lock();
1144
1145 sta = rcu_dereference(mvm->fw_id_to_mac_id[sta_id]);
1146 if (IS_ERR_OR_NULL(sta))
1147 goto out;
1148 mvmsta = iwl_mvm_sta_from_mac80211(sta);
1149
1150 if (iwl_mvm_is_static_queue(mvm, hw_queue)) {
1151 if (!start)
1152 ieee80211_stop_queues(mvm->hw);
1153 else if (mvmsta->sta_state != IEEE80211_STA_NOTEXIST)
1154 ieee80211_wake_queues(mvm->hw);
1155
1156 goto out;
1157 }
1158
1159 if (iwl_mvm_has_new_tx_api(mvm)) {
1160 int tid = mvm->tvqm_info[hw_queue].txq_tid;
1161
1162 tid_bitmap = BIT(tid);
1163 } else {
1164 tid_bitmap = mvm->queue_info[hw_queue].tid_bitmap;
1165 }
1166
1167 for_each_set_bit(i, &tid_bitmap, IWL_MAX_TID_COUNT + 1) {
1168 int tid = i;
1169
1170 if (tid == IWL_MAX_TID_COUNT)
1171 tid = IEEE80211_NUM_TIDS;
1172
1173 txq = sta->txq[tid];
1174 mvmtxq = iwl_mvm_txq_from_mac80211(txq);
1175 mvmtxq->stopped = !start;
1176
1177 if (start && mvmsta->sta_state != IEEE80211_STA_NOTEXIST)
1178 iwl_mvm_mac_itxq_xmit(mvm->hw, txq);
1179 }
1180
1181 out:
1182 rcu_read_unlock();
1183 }
1184
iwl_mvm_stop_sw_queue(struct iwl_op_mode * op_mode,int hw_queue)1185 static void iwl_mvm_stop_sw_queue(struct iwl_op_mode *op_mode, int hw_queue)
1186 {
1187 iwl_mvm_queue_state_change(op_mode, hw_queue, false);
1188 }
1189
iwl_mvm_wake_sw_queue(struct iwl_op_mode * op_mode,int hw_queue)1190 static void iwl_mvm_wake_sw_queue(struct iwl_op_mode *op_mode, int hw_queue)
1191 {
1192 iwl_mvm_queue_state_change(op_mode, hw_queue, true);
1193 }
1194
iwl_mvm_set_rfkill_state(struct iwl_mvm * mvm)1195 static void iwl_mvm_set_rfkill_state(struct iwl_mvm *mvm)
1196 {
1197 bool state = iwl_mvm_is_radio_killed(mvm);
1198
1199 if (state)
1200 wake_up(&mvm->rx_sync_waitq);
1201
1202 wiphy_rfkill_set_hw_state(mvm->hw->wiphy, state);
1203 }
1204
iwl_mvm_set_hw_ctkill_state(struct iwl_mvm * mvm,bool state)1205 void iwl_mvm_set_hw_ctkill_state(struct iwl_mvm *mvm, bool state)
1206 {
1207 if (state)
1208 set_bit(IWL_MVM_STATUS_HW_CTKILL, &mvm->status);
1209 else
1210 clear_bit(IWL_MVM_STATUS_HW_CTKILL, &mvm->status);
1211
1212 iwl_mvm_set_rfkill_state(mvm);
1213 }
1214
iwl_mvm_set_hw_rfkill_state(struct iwl_op_mode * op_mode,bool state)1215 static bool iwl_mvm_set_hw_rfkill_state(struct iwl_op_mode *op_mode, bool state)
1216 {
1217 struct iwl_mvm *mvm = IWL_OP_MODE_GET_MVM(op_mode);
1218 bool rfkill_safe_init_done = READ_ONCE(mvm->rfkill_safe_init_done);
1219 bool unified = iwl_mvm_has_unified_ucode(mvm);
1220
1221 if (state)
1222 set_bit(IWL_MVM_STATUS_HW_RFKILL, &mvm->status);
1223 else
1224 clear_bit(IWL_MVM_STATUS_HW_RFKILL, &mvm->status);
1225
1226 iwl_mvm_set_rfkill_state(mvm);
1227
1228 /* iwl_run_init_mvm_ucode is waiting for results, abort it. */
1229 if (rfkill_safe_init_done)
1230 iwl_abort_notification_waits(&mvm->notif_wait);
1231
1232 /*
1233 * Don't ask the transport to stop the firmware. We'll do it
1234 * after cfg80211 takes us down.
1235 */
1236 if (unified)
1237 return false;
1238
1239 /*
1240 * Stop the device if we run OPERATIONAL firmware or if we are in the
1241 * middle of the calibrations.
1242 */
1243 return state && rfkill_safe_init_done;
1244 }
1245
iwl_mvm_free_skb(struct iwl_op_mode * op_mode,struct sk_buff * skb)1246 static void iwl_mvm_free_skb(struct iwl_op_mode *op_mode, struct sk_buff *skb)
1247 {
1248 struct iwl_mvm *mvm = IWL_OP_MODE_GET_MVM(op_mode);
1249 struct ieee80211_tx_info *info;
1250
1251 info = IEEE80211_SKB_CB(skb);
1252 iwl_trans_free_tx_cmd(mvm->trans, info->driver_data[1]);
1253 ieee80211_free_txskb(mvm->hw, skb);
1254 }
1255
1256 struct iwl_mvm_reprobe {
1257 struct device *dev;
1258 struct work_struct work;
1259 };
1260
iwl_mvm_reprobe_wk(struct work_struct * wk)1261 static void iwl_mvm_reprobe_wk(struct work_struct *wk)
1262 {
1263 struct iwl_mvm_reprobe *reprobe;
1264
1265 reprobe = container_of(wk, struct iwl_mvm_reprobe, work);
1266 if (device_reprobe(reprobe->dev))
1267 dev_err(reprobe->dev, "reprobe failed!\n");
1268 put_device(reprobe->dev);
1269 kfree(reprobe);
1270 module_put(THIS_MODULE);
1271 }
1272
iwl_mvm_nic_restart(struct iwl_mvm * mvm,bool fw_error)1273 void iwl_mvm_nic_restart(struct iwl_mvm *mvm, bool fw_error)
1274 {
1275 iwl_abort_notification_waits(&mvm->notif_wait);
1276 iwl_dbg_tlv_del_timers(mvm->trans);
1277
1278 /*
1279 * This is a bit racy, but worst case we tell mac80211 about
1280 * a stopped/aborted scan when that was already done which
1281 * is not a problem. It is necessary to abort any os scan
1282 * here because mac80211 requires having the scan cleared
1283 * before restarting.
1284 * We'll reset the scan_status to NONE in restart cleanup in
1285 * the next start() call from mac80211. If restart isn't called
1286 * (no fw restart) scan status will stay busy.
1287 */
1288 iwl_mvm_report_scan_aborted(mvm);
1289
1290 /*
1291 * If we're restarting already, don't cycle restarts.
1292 * If INIT fw asserted, it will likely fail again.
1293 * If WoWLAN fw asserted, don't restart either, mac80211
1294 * can't recover this since we're already half suspended.
1295 */
1296 if (!mvm->fw_restart && fw_error) {
1297 iwl_fw_error_collect(&mvm->fwrt);
1298 } else if (test_bit(IWL_MVM_STATUS_STARTING,
1299 &mvm->status)) {
1300 IWL_ERR(mvm, "Starting mac, retry will be triggered anyway\n");
1301 } else if (test_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status)) {
1302 struct iwl_mvm_reprobe *reprobe;
1303
1304 IWL_ERR(mvm,
1305 "Firmware error during reconfiguration - reprobe!\n");
1306
1307 /*
1308 * get a module reference to avoid doing this while unloading
1309 * anyway and to avoid scheduling a work with code that's
1310 * being removed.
1311 */
1312 if (!try_module_get(THIS_MODULE)) {
1313 IWL_ERR(mvm, "Module is being unloaded - abort\n");
1314 return;
1315 }
1316
1317 reprobe = kzalloc(sizeof(*reprobe), GFP_ATOMIC);
1318 if (!reprobe) {
1319 module_put(THIS_MODULE);
1320 return;
1321 }
1322 reprobe->dev = get_device(mvm->trans->dev);
1323 INIT_WORK(&reprobe->work, iwl_mvm_reprobe_wk);
1324 schedule_work(&reprobe->work);
1325 } else if (test_bit(IWL_MVM_STATUS_HW_RESTART_REQUESTED,
1326 &mvm->status)) {
1327 IWL_ERR(mvm, "HW restart already requested, but not started\n");
1328 } else if (mvm->fwrt.cur_fw_img == IWL_UCODE_REGULAR &&
1329 mvm->hw_registered &&
1330 !test_bit(STATUS_TRANS_DEAD, &mvm->trans->status)) {
1331 if (mvm->fw->ucode_capa.error_log_size) {
1332 u32 src_size = mvm->fw->ucode_capa.error_log_size;
1333 u32 src_addr = mvm->fw->ucode_capa.error_log_addr;
1334 u8 *recover_buf = kzalloc(src_size, GFP_ATOMIC);
1335
1336 if (recover_buf) {
1337 mvm->error_recovery_buf = recover_buf;
1338 iwl_trans_read_mem_bytes(mvm->trans,
1339 src_addr,
1340 recover_buf,
1341 src_size);
1342 }
1343 }
1344
1345 iwl_fw_error_collect(&mvm->fwrt);
1346
1347 if (fw_error && mvm->fw_restart > 0)
1348 mvm->fw_restart--;
1349 set_bit(IWL_MVM_STATUS_HW_RESTART_REQUESTED, &mvm->status);
1350 ieee80211_restart_hw(mvm->hw);
1351 }
1352 }
1353
iwl_mvm_nic_error(struct iwl_op_mode * op_mode)1354 static void iwl_mvm_nic_error(struct iwl_op_mode *op_mode)
1355 {
1356 struct iwl_mvm *mvm = IWL_OP_MODE_GET_MVM(op_mode);
1357
1358 if (!test_bit(STATUS_TRANS_DEAD, &mvm->trans->status))
1359 iwl_mvm_dump_nic_error_log(mvm);
1360
1361 iwl_mvm_nic_restart(mvm, true);
1362 }
1363
iwl_mvm_cmd_queue_full(struct iwl_op_mode * op_mode)1364 static void iwl_mvm_cmd_queue_full(struct iwl_op_mode *op_mode)
1365 {
1366 struct iwl_mvm *mvm = IWL_OP_MODE_GET_MVM(op_mode);
1367
1368 WARN_ON(1);
1369 iwl_mvm_nic_restart(mvm, true);
1370 }
1371
1372 #define IWL_MVM_COMMON_OPS \
1373 /* these could be differentiated */ \
1374 .async_cb = iwl_mvm_async_cb, \
1375 .queue_full = iwl_mvm_stop_sw_queue, \
1376 .queue_not_full = iwl_mvm_wake_sw_queue, \
1377 .hw_rf_kill = iwl_mvm_set_hw_rfkill_state, \
1378 .free_skb = iwl_mvm_free_skb, \
1379 .nic_error = iwl_mvm_nic_error, \
1380 .cmd_queue_full = iwl_mvm_cmd_queue_full, \
1381 .nic_config = iwl_mvm_nic_config, \
1382 /* as we only register one, these MUST be common! */ \
1383 .start = iwl_op_mode_mvm_start, \
1384 .stop = iwl_op_mode_mvm_stop
1385
1386 static const struct iwl_op_mode_ops iwl_mvm_ops = {
1387 IWL_MVM_COMMON_OPS,
1388 .rx = iwl_mvm_rx,
1389 };
1390
iwl_mvm_rx_mq_rss(struct iwl_op_mode * op_mode,struct napi_struct * napi,struct iwl_rx_cmd_buffer * rxb,unsigned int queue)1391 static void iwl_mvm_rx_mq_rss(struct iwl_op_mode *op_mode,
1392 struct napi_struct *napi,
1393 struct iwl_rx_cmd_buffer *rxb,
1394 unsigned int queue)
1395 {
1396 struct iwl_mvm *mvm = IWL_OP_MODE_GET_MVM(op_mode);
1397 struct iwl_rx_packet *pkt = rxb_addr(rxb);
1398 u16 cmd = WIDE_ID(pkt->hdr.group_id, pkt->hdr.cmd);
1399
1400 if (unlikely(cmd == WIDE_ID(LEGACY_GROUP, FRAME_RELEASE)))
1401 iwl_mvm_rx_frame_release(mvm, napi, rxb, queue);
1402 else if (unlikely(cmd == WIDE_ID(DATA_PATH_GROUP,
1403 RX_QUEUES_NOTIFICATION)))
1404 iwl_mvm_rx_queue_notif(mvm, napi, rxb, queue);
1405 else if (likely(cmd == WIDE_ID(LEGACY_GROUP, REPLY_RX_MPDU_CMD)))
1406 iwl_mvm_rx_mpdu_mq(mvm, napi, rxb, queue);
1407 }
1408
1409 static const struct iwl_op_mode_ops iwl_mvm_ops_mq = {
1410 IWL_MVM_COMMON_OPS,
1411 .rx = iwl_mvm_rx_mq,
1412 .rx_rss = iwl_mvm_rx_mq_rss,
1413 };
1414