1 // SPDX-License-Identifier: GPL-2.0 OR BSD-3-Clause
2 /*
3 * Copyright (C) 2012-2014, 2018-2020 Intel Corporation
4 * Copyright (C) 2013-2015 Intel Mobile Communications GmbH
5 * Copyright (C) 2016-2017 Intel Deutschland GmbH
6 */
7 #include <linux/module.h>
8 #include <linux/vmalloc.h>
9 #include <net/mac80211.h>
10
11 #include "fw/notif-wait.h"
12 #include "iwl-trans.h"
13 #include "iwl-op-mode.h"
14 #include "fw/img.h"
15 #include "iwl-debug.h"
16 #include "iwl-drv.h"
17 #include "iwl-modparams.h"
18 #include "mvm.h"
19 #include "iwl-phy-db.h"
20 #include "iwl-eeprom-parse.h"
21 #include "iwl-csr.h"
22 #include "iwl-io.h"
23 #include "iwl-prph.h"
24 #include "rs.h"
25 #include "fw/api/scan.h"
26 #include "time-event.h"
27 #include "fw-api.h"
28 #include "fw/acpi.h"
29
30 #define DRV_DESCRIPTION "The new Intel(R) wireless AGN driver for Linux"
31 MODULE_DESCRIPTION(DRV_DESCRIPTION);
32 MODULE_LICENSE("GPL");
33
34 static const struct iwl_op_mode_ops iwl_mvm_ops;
35 static const struct iwl_op_mode_ops iwl_mvm_ops_mq;
36
37 struct iwl_mvm_mod_params iwlmvm_mod_params = {
38 .power_scheme = IWL_POWER_SCHEME_BPS,
39 /* rest of fields are 0 by default */
40 };
41
42 module_param_named(init_dbg, iwlmvm_mod_params.init_dbg, bool, 0444);
43 MODULE_PARM_DESC(init_dbg,
44 "set to true to debug an ASSERT in INIT fw (default: false");
45 module_param_named(power_scheme, iwlmvm_mod_params.power_scheme, int, 0444);
46 MODULE_PARM_DESC(power_scheme,
47 "power management scheme: 1-active, 2-balanced, 3-low power, default: 2");
48
49 /*
50 * module init and exit functions
51 */
iwl_mvm_init(void)52 static int __init iwl_mvm_init(void)
53 {
54 int ret;
55
56 ret = iwl_mvm_rate_control_register();
57 if (ret) {
58 pr_err("Unable to register rate control algorithm: %d\n", ret);
59 return ret;
60 }
61
62 ret = iwl_opmode_register("iwlmvm", &iwl_mvm_ops);
63 if (ret)
64 pr_err("Unable to register MVM op_mode: %d\n", ret);
65
66 return ret;
67 }
68 module_init(iwl_mvm_init);
69
iwl_mvm_exit(void)70 static void __exit iwl_mvm_exit(void)
71 {
72 iwl_opmode_deregister("iwlmvm");
73 iwl_mvm_rate_control_unregister();
74 }
75 module_exit(iwl_mvm_exit);
76
iwl_mvm_nic_config(struct iwl_op_mode * op_mode)77 static void iwl_mvm_nic_config(struct iwl_op_mode *op_mode)
78 {
79 struct iwl_mvm *mvm = IWL_OP_MODE_GET_MVM(op_mode);
80 u8 radio_cfg_type, radio_cfg_step, radio_cfg_dash;
81 u32 reg_val = 0;
82 u32 phy_config = iwl_mvm_get_phy_config(mvm);
83
84 radio_cfg_type = (phy_config & FW_PHY_CFG_RADIO_TYPE) >>
85 FW_PHY_CFG_RADIO_TYPE_POS;
86 radio_cfg_step = (phy_config & FW_PHY_CFG_RADIO_STEP) >>
87 FW_PHY_CFG_RADIO_STEP_POS;
88 radio_cfg_dash = (phy_config & FW_PHY_CFG_RADIO_DASH) >>
89 FW_PHY_CFG_RADIO_DASH_POS;
90
91 /* SKU control */
92 reg_val |= CSR_HW_REV_STEP(mvm->trans->hw_rev) <<
93 CSR_HW_IF_CONFIG_REG_POS_MAC_STEP;
94 reg_val |= CSR_HW_REV_DASH(mvm->trans->hw_rev) <<
95 CSR_HW_IF_CONFIG_REG_POS_MAC_DASH;
96
97 /* radio configuration */
98 reg_val |= radio_cfg_type << CSR_HW_IF_CONFIG_REG_POS_PHY_TYPE;
99 reg_val |= radio_cfg_step << CSR_HW_IF_CONFIG_REG_POS_PHY_STEP;
100 reg_val |= radio_cfg_dash << CSR_HW_IF_CONFIG_REG_POS_PHY_DASH;
101
102 WARN_ON((radio_cfg_type << CSR_HW_IF_CONFIG_REG_POS_PHY_TYPE) &
103 ~CSR_HW_IF_CONFIG_REG_MSK_PHY_TYPE);
104
105 /*
106 * TODO: Bits 7-8 of CSR in 8000 HW family and higher set the ADC
107 * sampling, and shouldn't be set to any non-zero value.
108 * The same is supposed to be true of the other HW, but unsetting
109 * them (such as the 7260) causes automatic tests to fail on seemingly
110 * unrelated errors. Need to further investigate this, but for now
111 * we'll separate cases.
112 */
113 if (mvm->trans->trans_cfg->device_family < IWL_DEVICE_FAMILY_8000)
114 reg_val |= CSR_HW_IF_CONFIG_REG_BIT_RADIO_SI;
115
116 if (iwl_fw_dbg_is_d3_debug_enabled(&mvm->fwrt))
117 reg_val |= CSR_HW_IF_CONFIG_REG_D3_DEBUG;
118
119 iwl_trans_set_bits_mask(mvm->trans, CSR_HW_IF_CONFIG_REG,
120 CSR_HW_IF_CONFIG_REG_MSK_MAC_DASH |
121 CSR_HW_IF_CONFIG_REG_MSK_MAC_STEP |
122 CSR_HW_IF_CONFIG_REG_MSK_PHY_TYPE |
123 CSR_HW_IF_CONFIG_REG_MSK_PHY_STEP |
124 CSR_HW_IF_CONFIG_REG_MSK_PHY_DASH |
125 CSR_HW_IF_CONFIG_REG_BIT_RADIO_SI |
126 CSR_HW_IF_CONFIG_REG_BIT_MAC_SI |
127 CSR_HW_IF_CONFIG_REG_D3_DEBUG,
128 reg_val);
129
130 IWL_DEBUG_INFO(mvm, "Radio type=0x%x-0x%x-0x%x\n", radio_cfg_type,
131 radio_cfg_step, radio_cfg_dash);
132
133 /*
134 * W/A : NIC is stuck in a reset state after Early PCIe power off
135 * (PCIe power is lost before PERST# is asserted), causing ME FW
136 * to lose ownership and not being able to obtain it back.
137 */
138 if (!mvm->trans->cfg->apmg_not_supported)
139 iwl_set_bits_mask_prph(mvm->trans, APMG_PS_CTRL_REG,
140 APMG_PS_CTRL_EARLY_PWR_OFF_RESET_DIS,
141 ~APMG_PS_CTRL_EARLY_PWR_OFF_RESET_DIS);
142 }
143
iwl_mvm_rx_monitor_notif(struct iwl_mvm * mvm,struct iwl_rx_cmd_buffer * rxb)144 static void iwl_mvm_rx_monitor_notif(struct iwl_mvm *mvm,
145 struct iwl_rx_cmd_buffer *rxb)
146 {
147 struct iwl_rx_packet *pkt = rxb_addr(rxb);
148 struct iwl_datapath_monitor_notif *notif = (void *)pkt->data;
149 struct ieee80211_supported_band *sband;
150 const struct ieee80211_sta_he_cap *he_cap;
151 struct ieee80211_vif *vif;
152
153 if (notif->type != cpu_to_le32(IWL_DP_MON_NOTIF_TYPE_EXT_CCA))
154 return;
155
156 vif = iwl_mvm_get_vif_by_macid(mvm, notif->mac_id);
157 if (!vif || vif->type != NL80211_IFTYPE_STATION)
158 return;
159
160 if (!vif->bss_conf.chandef.chan ||
161 vif->bss_conf.chandef.chan->band != NL80211_BAND_2GHZ ||
162 vif->bss_conf.chandef.width < NL80211_CHAN_WIDTH_40)
163 return;
164
165 if (!vif->bss_conf.assoc)
166 return;
167
168 /* this shouldn't happen *again*, ignore it */
169 if (mvm->cca_40mhz_workaround)
170 return;
171
172 /*
173 * We'll decrement this on disconnect - so set to 2 since we'll
174 * still have to disconnect from the current AP first.
175 */
176 mvm->cca_40mhz_workaround = 2;
177
178 /*
179 * This capability manipulation isn't really ideal, but it's the
180 * easiest choice - otherwise we'd have to do some major changes
181 * in mac80211 to support this, which isn't worth it. This does
182 * mean that userspace may have outdated information, but that's
183 * actually not an issue at all.
184 */
185 sband = mvm->hw->wiphy->bands[NL80211_BAND_2GHZ];
186
187 WARN_ON(!sband->ht_cap.ht_supported);
188 WARN_ON(!(sband->ht_cap.cap & IEEE80211_HT_CAP_SUP_WIDTH_20_40));
189 sband->ht_cap.cap &= ~IEEE80211_HT_CAP_SUP_WIDTH_20_40;
190
191 he_cap = ieee80211_get_he_iftype_cap(sband,
192 ieee80211_vif_type_p2p(vif));
193
194 if (he_cap) {
195 /* we know that ours is writable */
196 struct ieee80211_sta_he_cap *he = (void *)he_cap;
197
198 WARN_ON(!he->has_he);
199 WARN_ON(!(he->he_cap_elem.phy_cap_info[0] &
200 IEEE80211_HE_PHY_CAP0_CHANNEL_WIDTH_SET_40MHZ_IN_2G));
201 he->he_cap_elem.phy_cap_info[0] &=
202 ~IEEE80211_HE_PHY_CAP0_CHANNEL_WIDTH_SET_40MHZ_IN_2G;
203 }
204
205 ieee80211_disconnect(vif, true);
206 }
207
iwl_mvm_apply_fw_smps_request(struct ieee80211_vif * vif)208 void iwl_mvm_apply_fw_smps_request(struct ieee80211_vif *vif)
209 {
210 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
211 struct iwl_mvm *mvm = mvmvif->mvm;
212 enum ieee80211_smps_mode mode = IEEE80211_SMPS_AUTOMATIC;
213
214 if (mvm->fw_static_smps_request &&
215 vif->bss_conf.chandef.width == NL80211_CHAN_WIDTH_160 &&
216 vif->bss_conf.he_support)
217 mode = IEEE80211_SMPS_STATIC;
218
219 iwl_mvm_update_smps(mvm, vif, IWL_MVM_SMPS_REQ_FW, mode);
220 }
221
iwl_mvm_intf_dual_chain_req(void * data,u8 * mac,struct ieee80211_vif * vif)222 static void iwl_mvm_intf_dual_chain_req(void *data, u8 *mac,
223 struct ieee80211_vif *vif)
224 {
225 iwl_mvm_apply_fw_smps_request(vif);
226 }
227
iwl_mvm_rx_thermal_dual_chain_req(struct iwl_mvm * mvm,struct iwl_rx_cmd_buffer * rxb)228 static void iwl_mvm_rx_thermal_dual_chain_req(struct iwl_mvm *mvm,
229 struct iwl_rx_cmd_buffer *rxb)
230 {
231 struct iwl_rx_packet *pkt = rxb_addr(rxb);
232 struct iwl_thermal_dual_chain_request *req = (void *)pkt->data;
233
234 /*
235 * We could pass it to the iterator data, but also need to remember
236 * it for new interfaces that are added while in this state.
237 */
238 mvm->fw_static_smps_request =
239 req->event == cpu_to_le32(THERMAL_DUAL_CHAIN_REQ_DISABLE);
240 ieee80211_iterate_interfaces(mvm->hw, IEEE80211_IFACE_ITER_NORMAL,
241 iwl_mvm_intf_dual_chain_req, NULL);
242 }
243
244 /**
245 * enum iwl_rx_handler_context context for Rx handler
246 * @RX_HANDLER_SYNC : this means that it will be called in the Rx path
247 * which can't acquire mvm->mutex.
248 * @RX_HANDLER_ASYNC_LOCKED : If the handler needs to hold mvm->mutex
249 * (and only in this case!), it should be set as ASYNC. In that case,
250 * it will be called from a worker with mvm->mutex held.
251 * @RX_HANDLER_ASYNC_UNLOCKED : in case the handler needs to lock the
252 * mutex itself, it will be called from a worker without mvm->mutex held.
253 */
254 enum iwl_rx_handler_context {
255 RX_HANDLER_SYNC,
256 RX_HANDLER_ASYNC_LOCKED,
257 RX_HANDLER_ASYNC_UNLOCKED,
258 };
259
260 /**
261 * struct iwl_rx_handlers handler for FW notification
262 * @cmd_id: command id
263 * @context: see &iwl_rx_handler_context
264 * @fn: the function is called when notification is received
265 */
266 struct iwl_rx_handlers {
267 u16 cmd_id, min_size;
268 enum iwl_rx_handler_context context;
269 void (*fn)(struct iwl_mvm *mvm, struct iwl_rx_cmd_buffer *rxb);
270 };
271
272 #define RX_HANDLER_NO_SIZE(_cmd_id, _fn, _context) \
273 { .cmd_id = _cmd_id, .fn = _fn, .context = _context, }
274 #define RX_HANDLER_GRP_NO_SIZE(_grp, _cmd, _fn, _context) \
275 { .cmd_id = WIDE_ID(_grp, _cmd), .fn = _fn, .context = _context, }
276 #define RX_HANDLER(_cmd_id, _fn, _context, _struct) \
277 { .cmd_id = _cmd_id, .fn = _fn, \
278 .context = _context, .min_size = sizeof(_struct), }
279 #define RX_HANDLER_GRP(_grp, _cmd, _fn, _context, _struct) \
280 { .cmd_id = WIDE_ID(_grp, _cmd), .fn = _fn, \
281 .context = _context, .min_size = sizeof(_struct), }
282
283 /*
284 * Handlers for fw notifications
285 * Convention: RX_HANDLER(CMD_NAME, iwl_mvm_rx_CMD_NAME
286 * This list should be in order of frequency for performance purposes.
287 *
288 * The handler can be one from three contexts, see &iwl_rx_handler_context
289 */
290 static const struct iwl_rx_handlers iwl_mvm_rx_handlers[] = {
291 RX_HANDLER(TX_CMD, iwl_mvm_rx_tx_cmd, RX_HANDLER_SYNC,
292 struct iwl_mvm_tx_resp),
293 RX_HANDLER(BA_NOTIF, iwl_mvm_rx_ba_notif, RX_HANDLER_SYNC,
294 struct iwl_mvm_ba_notif),
295
296 RX_HANDLER_GRP(DATA_PATH_GROUP, TLC_MNG_UPDATE_NOTIF,
297 iwl_mvm_tlc_update_notif, RX_HANDLER_SYNC,
298 struct iwl_tlc_update_notif),
299
300 RX_HANDLER(BT_PROFILE_NOTIFICATION, iwl_mvm_rx_bt_coex_notif,
301 RX_HANDLER_ASYNC_LOCKED, struct iwl_bt_coex_profile_notif),
302 RX_HANDLER_NO_SIZE(BEACON_NOTIFICATION, iwl_mvm_rx_beacon_notif,
303 RX_HANDLER_ASYNC_LOCKED),
304 RX_HANDLER_NO_SIZE(STATISTICS_NOTIFICATION, iwl_mvm_rx_statistics,
305 RX_HANDLER_ASYNC_LOCKED),
306
307 RX_HANDLER(BA_WINDOW_STATUS_NOTIFICATION_ID,
308 iwl_mvm_window_status_notif, RX_HANDLER_SYNC,
309 struct iwl_ba_window_status_notif),
310
311 RX_HANDLER(TIME_EVENT_NOTIFICATION, iwl_mvm_rx_time_event_notif,
312 RX_HANDLER_SYNC, struct iwl_time_event_notif),
313 RX_HANDLER_GRP(MAC_CONF_GROUP, SESSION_PROTECTION_NOTIF,
314 iwl_mvm_rx_session_protect_notif, RX_HANDLER_SYNC,
315 struct iwl_mvm_session_prot_notif),
316 RX_HANDLER(MCC_CHUB_UPDATE_CMD, iwl_mvm_rx_chub_update_mcc,
317 RX_HANDLER_ASYNC_LOCKED, struct iwl_mcc_chub_notif),
318
319 RX_HANDLER(EOSP_NOTIFICATION, iwl_mvm_rx_eosp_notif, RX_HANDLER_SYNC,
320 struct iwl_mvm_eosp_notification),
321
322 RX_HANDLER(SCAN_ITERATION_COMPLETE,
323 iwl_mvm_rx_lmac_scan_iter_complete_notif, RX_HANDLER_SYNC,
324 struct iwl_lmac_scan_complete_notif),
325 RX_HANDLER(SCAN_OFFLOAD_COMPLETE,
326 iwl_mvm_rx_lmac_scan_complete_notif,
327 RX_HANDLER_ASYNC_LOCKED, struct iwl_periodic_scan_complete),
328 RX_HANDLER_NO_SIZE(MATCH_FOUND_NOTIFICATION,
329 iwl_mvm_rx_scan_match_found,
330 RX_HANDLER_SYNC),
331 RX_HANDLER(SCAN_COMPLETE_UMAC, iwl_mvm_rx_umac_scan_complete_notif,
332 RX_HANDLER_ASYNC_LOCKED, struct iwl_umac_scan_complete),
333 RX_HANDLER(SCAN_ITERATION_COMPLETE_UMAC,
334 iwl_mvm_rx_umac_scan_iter_complete_notif, RX_HANDLER_SYNC,
335 struct iwl_umac_scan_iter_complete_notif),
336
337 RX_HANDLER(CARD_STATE_NOTIFICATION, iwl_mvm_rx_card_state_notif,
338 RX_HANDLER_SYNC, struct iwl_card_state_notif),
339
340 RX_HANDLER(MISSED_BEACONS_NOTIFICATION, iwl_mvm_rx_missed_beacons_notif,
341 RX_HANDLER_SYNC, struct iwl_missed_beacons_notif),
342
343 RX_HANDLER(REPLY_ERROR, iwl_mvm_rx_fw_error, RX_HANDLER_SYNC,
344 struct iwl_error_resp),
345 RX_HANDLER(PSM_UAPSD_AP_MISBEHAVING_NOTIFICATION,
346 iwl_mvm_power_uapsd_misbehaving_ap_notif, RX_HANDLER_SYNC,
347 struct iwl_uapsd_misbehaving_ap_notif),
348 RX_HANDLER_NO_SIZE(DTS_MEASUREMENT_NOTIFICATION, iwl_mvm_temp_notif,
349 RX_HANDLER_ASYNC_LOCKED),
350 RX_HANDLER_GRP_NO_SIZE(PHY_OPS_GROUP, DTS_MEASUREMENT_NOTIF_WIDE,
351 iwl_mvm_temp_notif, RX_HANDLER_ASYNC_UNLOCKED),
352 RX_HANDLER_GRP(PHY_OPS_GROUP, CT_KILL_NOTIFICATION,
353 iwl_mvm_ct_kill_notif, RX_HANDLER_SYNC,
354 struct ct_kill_notif),
355
356 RX_HANDLER(TDLS_CHANNEL_SWITCH_NOTIFICATION, iwl_mvm_rx_tdls_notif,
357 RX_HANDLER_ASYNC_LOCKED,
358 struct iwl_tdls_channel_switch_notif),
359 RX_HANDLER(MFUART_LOAD_NOTIFICATION, iwl_mvm_rx_mfuart_notif,
360 RX_HANDLER_SYNC, struct iwl_mfuart_load_notif_v1),
361 RX_HANDLER_GRP(LOCATION_GROUP, TOF_RESPONDER_STATS,
362 iwl_mvm_ftm_responder_stats, RX_HANDLER_ASYNC_LOCKED,
363 struct iwl_ftm_responder_stats),
364
365 RX_HANDLER_GRP_NO_SIZE(LOCATION_GROUP, TOF_RANGE_RESPONSE_NOTIF,
366 iwl_mvm_ftm_range_resp, RX_HANDLER_ASYNC_LOCKED),
367 RX_HANDLER_GRP_NO_SIZE(LOCATION_GROUP, TOF_LC_NOTIF,
368 iwl_mvm_ftm_lc_notif, RX_HANDLER_ASYNC_LOCKED),
369
370 RX_HANDLER_GRP(DEBUG_GROUP, MFU_ASSERT_DUMP_NTF,
371 iwl_mvm_mfu_assert_dump_notif, RX_HANDLER_SYNC,
372 struct iwl_mfu_assert_dump_notif),
373 RX_HANDLER_GRP(PROT_OFFLOAD_GROUP, STORED_BEACON_NTF,
374 iwl_mvm_rx_stored_beacon_notif, RX_HANDLER_SYNC,
375 struct iwl_stored_beacon_notif_v2),
376 RX_HANDLER_GRP(DATA_PATH_GROUP, MU_GROUP_MGMT_NOTIF,
377 iwl_mvm_mu_mimo_grp_notif, RX_HANDLER_SYNC,
378 struct iwl_mu_group_mgmt_notif),
379 RX_HANDLER_GRP(DATA_PATH_GROUP, STA_PM_NOTIF,
380 iwl_mvm_sta_pm_notif, RX_HANDLER_SYNC,
381 struct iwl_mvm_pm_state_notification),
382 RX_HANDLER_GRP(MAC_CONF_GROUP, PROBE_RESPONSE_DATA_NOTIF,
383 iwl_mvm_probe_resp_data_notif,
384 RX_HANDLER_ASYNC_LOCKED,
385 struct iwl_probe_resp_data_notif),
386 RX_HANDLER_GRP(MAC_CONF_GROUP, CHANNEL_SWITCH_START_NOTIF,
387 iwl_mvm_channel_switch_start_notif,
388 RX_HANDLER_SYNC, struct iwl_channel_switch_start_notif),
389 RX_HANDLER_GRP(DATA_PATH_GROUP, MONITOR_NOTIF,
390 iwl_mvm_rx_monitor_notif, RX_HANDLER_ASYNC_LOCKED,
391 struct iwl_datapath_monitor_notif),
392
393 RX_HANDLER_GRP(DATA_PATH_GROUP, THERMAL_DUAL_CHAIN_REQUEST,
394 iwl_mvm_rx_thermal_dual_chain_req,
395 RX_HANDLER_ASYNC_LOCKED,
396 struct iwl_thermal_dual_chain_request),
397 };
398 #undef RX_HANDLER
399 #undef RX_HANDLER_GRP
400
401 /* Please keep this array *SORTED* by hex value.
402 * Access is done through binary search
403 */
404 static const struct iwl_hcmd_names iwl_mvm_legacy_names[] = {
405 HCMD_NAME(UCODE_ALIVE_NTFY),
406 HCMD_NAME(REPLY_ERROR),
407 HCMD_NAME(ECHO_CMD),
408 HCMD_NAME(INIT_COMPLETE_NOTIF),
409 HCMD_NAME(PHY_CONTEXT_CMD),
410 HCMD_NAME(DBG_CFG),
411 HCMD_NAME(SCAN_CFG_CMD),
412 HCMD_NAME(SCAN_REQ_UMAC),
413 HCMD_NAME(SCAN_ABORT_UMAC),
414 HCMD_NAME(SCAN_COMPLETE_UMAC),
415 HCMD_NAME(BA_WINDOW_STATUS_NOTIFICATION_ID),
416 HCMD_NAME(ADD_STA_KEY),
417 HCMD_NAME(ADD_STA),
418 HCMD_NAME(REMOVE_STA),
419 HCMD_NAME(FW_GET_ITEM_CMD),
420 HCMD_NAME(TX_CMD),
421 HCMD_NAME(SCD_QUEUE_CFG),
422 HCMD_NAME(TXPATH_FLUSH),
423 HCMD_NAME(MGMT_MCAST_KEY),
424 HCMD_NAME(WEP_KEY),
425 HCMD_NAME(SHARED_MEM_CFG),
426 HCMD_NAME(TDLS_CHANNEL_SWITCH_CMD),
427 HCMD_NAME(MAC_CONTEXT_CMD),
428 HCMD_NAME(TIME_EVENT_CMD),
429 HCMD_NAME(TIME_EVENT_NOTIFICATION),
430 HCMD_NAME(BINDING_CONTEXT_CMD),
431 HCMD_NAME(TIME_QUOTA_CMD),
432 HCMD_NAME(NON_QOS_TX_COUNTER_CMD),
433 HCMD_NAME(LEDS_CMD),
434 HCMD_NAME(LQ_CMD),
435 HCMD_NAME(FW_PAGING_BLOCK_CMD),
436 HCMD_NAME(SCAN_OFFLOAD_REQUEST_CMD),
437 HCMD_NAME(SCAN_OFFLOAD_ABORT_CMD),
438 HCMD_NAME(HOT_SPOT_CMD),
439 HCMD_NAME(SCAN_OFFLOAD_PROFILES_QUERY_CMD),
440 HCMD_NAME(BT_COEX_UPDATE_REDUCED_TXP),
441 HCMD_NAME(BT_COEX_CI),
442 HCMD_NAME(PHY_CONFIGURATION_CMD),
443 HCMD_NAME(CALIB_RES_NOTIF_PHY_DB),
444 HCMD_NAME(PHY_DB_CMD),
445 HCMD_NAME(SCAN_OFFLOAD_COMPLETE),
446 HCMD_NAME(SCAN_OFFLOAD_UPDATE_PROFILES_CMD),
447 HCMD_NAME(POWER_TABLE_CMD),
448 HCMD_NAME(PSM_UAPSD_AP_MISBEHAVING_NOTIFICATION),
449 HCMD_NAME(REPLY_THERMAL_MNG_BACKOFF),
450 HCMD_NAME(DC2DC_CONFIG_CMD),
451 HCMD_NAME(NVM_ACCESS_CMD),
452 HCMD_NAME(BEACON_NOTIFICATION),
453 HCMD_NAME(BEACON_TEMPLATE_CMD),
454 HCMD_NAME(TX_ANT_CONFIGURATION_CMD),
455 HCMD_NAME(BT_CONFIG),
456 HCMD_NAME(STATISTICS_CMD),
457 HCMD_NAME(STATISTICS_NOTIFICATION),
458 HCMD_NAME(EOSP_NOTIFICATION),
459 HCMD_NAME(REDUCE_TX_POWER_CMD),
460 HCMD_NAME(CARD_STATE_NOTIFICATION),
461 HCMD_NAME(MISSED_BEACONS_NOTIFICATION),
462 HCMD_NAME(TDLS_CONFIG_CMD),
463 HCMD_NAME(MAC_PM_POWER_TABLE),
464 HCMD_NAME(TDLS_CHANNEL_SWITCH_NOTIFICATION),
465 HCMD_NAME(MFUART_LOAD_NOTIFICATION),
466 HCMD_NAME(RSS_CONFIG_CMD),
467 HCMD_NAME(SCAN_ITERATION_COMPLETE_UMAC),
468 HCMD_NAME(REPLY_RX_PHY_CMD),
469 HCMD_NAME(REPLY_RX_MPDU_CMD),
470 HCMD_NAME(BAR_FRAME_RELEASE),
471 HCMD_NAME(FRAME_RELEASE),
472 HCMD_NAME(BA_NOTIF),
473 HCMD_NAME(MCC_UPDATE_CMD),
474 HCMD_NAME(MCC_CHUB_UPDATE_CMD),
475 HCMD_NAME(MARKER_CMD),
476 HCMD_NAME(BT_PROFILE_NOTIFICATION),
477 HCMD_NAME(BCAST_FILTER_CMD),
478 HCMD_NAME(MCAST_FILTER_CMD),
479 HCMD_NAME(REPLY_SF_CFG_CMD),
480 HCMD_NAME(REPLY_BEACON_FILTERING_CMD),
481 HCMD_NAME(D3_CONFIG_CMD),
482 HCMD_NAME(PROT_OFFLOAD_CONFIG_CMD),
483 HCMD_NAME(OFFLOADS_QUERY_CMD),
484 HCMD_NAME(MATCH_FOUND_NOTIFICATION),
485 HCMD_NAME(DTS_MEASUREMENT_NOTIFICATION),
486 HCMD_NAME(WOWLAN_PATTERNS),
487 HCMD_NAME(WOWLAN_CONFIGURATION),
488 HCMD_NAME(WOWLAN_TSC_RSC_PARAM),
489 HCMD_NAME(WOWLAN_TKIP_PARAM),
490 HCMD_NAME(WOWLAN_KEK_KCK_MATERIAL),
491 HCMD_NAME(WOWLAN_GET_STATUSES),
492 HCMD_NAME(SCAN_ITERATION_COMPLETE),
493 HCMD_NAME(D0I3_END_CMD),
494 HCMD_NAME(LTR_CONFIG),
495 HCMD_NAME(LDBG_CONFIG_CMD),
496 };
497
498 /* Please keep this array *SORTED* by hex value.
499 * Access is done through binary search
500 */
501 static const struct iwl_hcmd_names iwl_mvm_system_names[] = {
502 HCMD_NAME(SHARED_MEM_CFG_CMD),
503 HCMD_NAME(INIT_EXTENDED_CFG_CMD),
504 HCMD_NAME(FW_ERROR_RECOVERY_CMD),
505 };
506
507 /* Please keep this array *SORTED* by hex value.
508 * Access is done through binary search
509 */
510 static const struct iwl_hcmd_names iwl_mvm_mac_conf_names[] = {
511 HCMD_NAME(CHANNEL_SWITCH_TIME_EVENT_CMD),
512 HCMD_NAME(SESSION_PROTECTION_CMD),
513 HCMD_NAME(SESSION_PROTECTION_NOTIF),
514 HCMD_NAME(CHANNEL_SWITCH_START_NOTIF),
515 };
516
517 /* Please keep this array *SORTED* by hex value.
518 * Access is done through binary search
519 */
520 static const struct iwl_hcmd_names iwl_mvm_phy_names[] = {
521 HCMD_NAME(CMD_DTS_MEASUREMENT_TRIGGER_WIDE),
522 HCMD_NAME(CTDP_CONFIG_CMD),
523 HCMD_NAME(TEMP_REPORTING_THRESHOLDS_CMD),
524 HCMD_NAME(PER_CHAIN_LIMIT_OFFSET_CMD),
525 HCMD_NAME(CT_KILL_NOTIFICATION),
526 HCMD_NAME(DTS_MEASUREMENT_NOTIF_WIDE),
527 };
528
529 /* Please keep this array *SORTED* by hex value.
530 * Access is done through binary search
531 */
532 static const struct iwl_hcmd_names iwl_mvm_data_path_names[] = {
533 HCMD_NAME(DQA_ENABLE_CMD),
534 HCMD_NAME(UPDATE_MU_GROUPS_CMD),
535 HCMD_NAME(TRIGGER_RX_QUEUES_NOTIF_CMD),
536 HCMD_NAME(STA_HE_CTXT_CMD),
537 HCMD_NAME(RFH_QUEUE_CONFIG_CMD),
538 HCMD_NAME(TLC_MNG_CONFIG_CMD),
539 HCMD_NAME(CHEST_COLLECTOR_FILTER_CONFIG_CMD),
540 HCMD_NAME(MONITOR_NOTIF),
541 HCMD_NAME(THERMAL_DUAL_CHAIN_REQUEST),
542 HCMD_NAME(STA_PM_NOTIF),
543 HCMD_NAME(MU_GROUP_MGMT_NOTIF),
544 HCMD_NAME(RX_QUEUES_NOTIFICATION),
545 };
546
547 /* Please keep this array *SORTED* by hex value.
548 * Access is done through binary search
549 */
550 static const struct iwl_hcmd_names iwl_mvm_location_names[] = {
551 HCMD_NAME(TOF_RANGE_REQ_CMD),
552 HCMD_NAME(TOF_CONFIG_CMD),
553 HCMD_NAME(TOF_RANGE_ABORT_CMD),
554 HCMD_NAME(TOF_RANGE_REQ_EXT_CMD),
555 HCMD_NAME(TOF_RESPONDER_CONFIG_CMD),
556 HCMD_NAME(TOF_RESPONDER_DYN_CONFIG_CMD),
557 HCMD_NAME(TOF_LC_NOTIF),
558 HCMD_NAME(TOF_RESPONDER_STATS),
559 HCMD_NAME(TOF_MCSI_DEBUG_NOTIF),
560 HCMD_NAME(TOF_RANGE_RESPONSE_NOTIF),
561 };
562
563 /* Please keep this array *SORTED* by hex value.
564 * Access is done through binary search
565 */
566 static const struct iwl_hcmd_names iwl_mvm_prot_offload_names[] = {
567 HCMD_NAME(STORED_BEACON_NTF),
568 };
569
570 /* Please keep this array *SORTED* by hex value.
571 * Access is done through binary search
572 */
573 static const struct iwl_hcmd_names iwl_mvm_regulatory_and_nvm_names[] = {
574 HCMD_NAME(NVM_ACCESS_COMPLETE),
575 HCMD_NAME(NVM_GET_INFO),
576 HCMD_NAME(TAS_CONFIG),
577 };
578
579 static const struct iwl_hcmd_arr iwl_mvm_groups[] = {
580 [LEGACY_GROUP] = HCMD_ARR(iwl_mvm_legacy_names),
581 [LONG_GROUP] = HCMD_ARR(iwl_mvm_legacy_names),
582 [SYSTEM_GROUP] = HCMD_ARR(iwl_mvm_system_names),
583 [MAC_CONF_GROUP] = HCMD_ARR(iwl_mvm_mac_conf_names),
584 [PHY_OPS_GROUP] = HCMD_ARR(iwl_mvm_phy_names),
585 [DATA_PATH_GROUP] = HCMD_ARR(iwl_mvm_data_path_names),
586 [LOCATION_GROUP] = HCMD_ARR(iwl_mvm_location_names),
587 [PROT_OFFLOAD_GROUP] = HCMD_ARR(iwl_mvm_prot_offload_names),
588 [REGULATORY_AND_NVM_GROUP] =
589 HCMD_ARR(iwl_mvm_regulatory_and_nvm_names),
590 };
591
592 /* this forward declaration can avoid to export the function */
593 static void iwl_mvm_async_handlers_wk(struct work_struct *wk);
594
iwl_mvm_min_backoff(struct iwl_mvm * mvm)595 static u32 iwl_mvm_min_backoff(struct iwl_mvm *mvm)
596 {
597 const struct iwl_pwr_tx_backoff *backoff = mvm->cfg->pwr_tx_backoffs;
598 u64 dflt_pwr_limit;
599
600 if (!backoff)
601 return 0;
602
603 dflt_pwr_limit = iwl_acpi_get_pwr_limit(mvm->dev);
604
605 while (backoff->pwr) {
606 if (dflt_pwr_limit >= backoff->pwr)
607 return backoff->backoff;
608
609 backoff++;
610 }
611
612 return 0;
613 }
614
iwl_mvm_tx_unblock_dwork(struct work_struct * work)615 static void iwl_mvm_tx_unblock_dwork(struct work_struct *work)
616 {
617 struct iwl_mvm *mvm =
618 container_of(work, struct iwl_mvm, cs_tx_unblock_dwork.work);
619 struct ieee80211_vif *tx_blocked_vif;
620 struct iwl_mvm_vif *mvmvif;
621
622 mutex_lock(&mvm->mutex);
623
624 tx_blocked_vif =
625 rcu_dereference_protected(mvm->csa_tx_blocked_vif,
626 lockdep_is_held(&mvm->mutex));
627
628 if (!tx_blocked_vif)
629 goto unlock;
630
631 mvmvif = iwl_mvm_vif_from_mac80211(tx_blocked_vif);
632 iwl_mvm_modify_all_sta_disable_tx(mvm, mvmvif, false);
633 RCU_INIT_POINTER(mvm->csa_tx_blocked_vif, NULL);
634 unlock:
635 mutex_unlock(&mvm->mutex);
636 }
637
iwl_mvm_fwrt_dump_start(void * ctx)638 static int iwl_mvm_fwrt_dump_start(void *ctx)
639 {
640 struct iwl_mvm *mvm = ctx;
641
642 mutex_lock(&mvm->mutex);
643
644 return 0;
645 }
646
iwl_mvm_fwrt_dump_end(void * ctx)647 static void iwl_mvm_fwrt_dump_end(void *ctx)
648 {
649 struct iwl_mvm *mvm = ctx;
650
651 mutex_unlock(&mvm->mutex);
652 }
653
iwl_mvm_fwrt_fw_running(void * ctx)654 static bool iwl_mvm_fwrt_fw_running(void *ctx)
655 {
656 return iwl_mvm_firmware_running(ctx);
657 }
658
iwl_mvm_fwrt_send_hcmd(void * ctx,struct iwl_host_cmd * host_cmd)659 static int iwl_mvm_fwrt_send_hcmd(void *ctx, struct iwl_host_cmd *host_cmd)
660 {
661 struct iwl_mvm *mvm = (struct iwl_mvm *)ctx;
662 int ret;
663
664 mutex_lock(&mvm->mutex);
665 ret = iwl_mvm_send_cmd(mvm, host_cmd);
666 mutex_unlock(&mvm->mutex);
667
668 return ret;
669 }
670
iwl_mvm_d3_debug_enable(void * ctx)671 static bool iwl_mvm_d3_debug_enable(void *ctx)
672 {
673 return IWL_MVM_D3_DEBUG;
674 }
675
676 static const struct iwl_fw_runtime_ops iwl_mvm_fwrt_ops = {
677 .dump_start = iwl_mvm_fwrt_dump_start,
678 .dump_end = iwl_mvm_fwrt_dump_end,
679 .fw_running = iwl_mvm_fwrt_fw_running,
680 .send_hcmd = iwl_mvm_fwrt_send_hcmd,
681 .d3_debug_enable = iwl_mvm_d3_debug_enable,
682 };
683
iwl_mvm_start_get_nvm(struct iwl_mvm * mvm)684 static int iwl_mvm_start_get_nvm(struct iwl_mvm *mvm)
685 {
686 int ret;
687
688 rtnl_lock();
689 wiphy_lock(mvm->hw->wiphy);
690 mutex_lock(&mvm->mutex);
691
692 ret = iwl_run_init_mvm_ucode(mvm);
693
694 if (ret && ret != -ERFKILL)
695 iwl_fw_dbg_error_collect(&mvm->fwrt, FW_DBG_TRIGGER_DRIVER);
696 if (!ret && iwl_mvm_is_lar_supported(mvm)) {
697 mvm->hw->wiphy->regulatory_flags |= REGULATORY_WIPHY_SELF_MANAGED;
698 ret = iwl_mvm_init_mcc(mvm);
699 }
700
701 if (!iwlmvm_mod_params.init_dbg || !ret)
702 iwl_mvm_stop_device(mvm);
703
704 mutex_unlock(&mvm->mutex);
705 wiphy_unlock(mvm->hw->wiphy);
706 rtnl_unlock();
707
708 if (ret < 0)
709 IWL_ERR(mvm, "Failed to run INIT ucode: %d\n", ret);
710
711 return ret;
712 }
713
iwl_mvm_start_post_nvm(struct iwl_mvm * mvm)714 static int iwl_mvm_start_post_nvm(struct iwl_mvm *mvm)
715 {
716 int ret;
717
718 iwl_mvm_toggle_tx_ant(mvm, &mvm->mgmt_last_antenna_idx);
719
720 ret = iwl_mvm_mac_setup_register(mvm);
721 if (ret)
722 return ret;
723 mvm->hw_registered = true;
724
725 iwl_mvm_dbgfs_register(mvm);
726
727 return 0;
728 }
729
730 struct iwl_mvm_frob_txf_data {
731 u8 *buf;
732 size_t buflen;
733 };
734
iwl_mvm_frob_txf_key_iter(struct ieee80211_hw * hw,struct ieee80211_vif * vif,struct ieee80211_sta * sta,struct ieee80211_key_conf * key,void * data)735 static void iwl_mvm_frob_txf_key_iter(struct ieee80211_hw *hw,
736 struct ieee80211_vif *vif,
737 struct ieee80211_sta *sta,
738 struct ieee80211_key_conf *key,
739 void *data)
740 {
741 struct iwl_mvm_frob_txf_data *txf = data;
742 u8 keylen, match, matchend;
743 u8 *keydata;
744 size_t i;
745
746 switch (key->cipher) {
747 case WLAN_CIPHER_SUITE_CCMP:
748 keydata = key->key;
749 keylen = key->keylen;
750 break;
751 case WLAN_CIPHER_SUITE_WEP40:
752 case WLAN_CIPHER_SUITE_WEP104:
753 case WLAN_CIPHER_SUITE_TKIP:
754 /*
755 * WEP has short keys which might show up in the payload,
756 * and then you can deduce the key, so in this case just
757 * remove all FIFO data.
758 * For TKIP, we don't know the phase 2 keys here, so same.
759 */
760 memset(txf->buf, 0xBB, txf->buflen);
761 return;
762 default:
763 return;
764 }
765
766 /* scan for key material and clear it out */
767 match = 0;
768 for (i = 0; i < txf->buflen; i++) {
769 if (txf->buf[i] != keydata[match]) {
770 match = 0;
771 continue;
772 }
773 match++;
774 if (match == keylen) {
775 memset(txf->buf + i - keylen, 0xAA, keylen);
776 match = 0;
777 }
778 }
779
780 /* we're dealing with a FIFO, so check wrapped around data */
781 matchend = match;
782 for (i = 0; match && i < keylen - match; i++) {
783 if (txf->buf[i] != keydata[match])
784 break;
785 match++;
786 if (match == keylen) {
787 memset(txf->buf, 0xAA, i + 1);
788 memset(txf->buf + txf->buflen - matchend, 0xAA,
789 matchend);
790 break;
791 }
792 }
793 }
794
iwl_mvm_frob_txf(void * ctx,void * buf,size_t buflen)795 static void iwl_mvm_frob_txf(void *ctx, void *buf, size_t buflen)
796 {
797 struct iwl_mvm_frob_txf_data txf = {
798 .buf = buf,
799 .buflen = buflen,
800 };
801 struct iwl_mvm *mvm = ctx;
802
803 /* embedded key material exists only on old API */
804 if (iwl_mvm_has_new_tx_api(mvm))
805 return;
806
807 rcu_read_lock();
808 ieee80211_iter_keys_rcu(mvm->hw, NULL, iwl_mvm_frob_txf_key_iter, &txf);
809 rcu_read_unlock();
810 }
811
iwl_mvm_frob_hcmd(void * ctx,void * hcmd,size_t len)812 static void iwl_mvm_frob_hcmd(void *ctx, void *hcmd, size_t len)
813 {
814 /* we only use wide headers for commands */
815 struct iwl_cmd_header_wide *hdr = hcmd;
816 unsigned int frob_start = sizeof(*hdr), frob_end = 0;
817
818 if (len < sizeof(hdr))
819 return;
820
821 /* all the commands we care about are in LONG_GROUP */
822 if (hdr->group_id != LONG_GROUP)
823 return;
824
825 switch (hdr->cmd) {
826 case WEP_KEY:
827 case WOWLAN_TKIP_PARAM:
828 case WOWLAN_KEK_KCK_MATERIAL:
829 case ADD_STA_KEY:
830 /*
831 * blank out everything here, easier than dealing
832 * with the various versions of the command
833 */
834 frob_end = INT_MAX;
835 break;
836 case MGMT_MCAST_KEY:
837 frob_start = offsetof(struct iwl_mvm_mgmt_mcast_key_cmd, igtk);
838 BUILD_BUG_ON(offsetof(struct iwl_mvm_mgmt_mcast_key_cmd, igtk) !=
839 offsetof(struct iwl_mvm_mgmt_mcast_key_cmd_v1, igtk));
840
841 frob_end = offsetofend(struct iwl_mvm_mgmt_mcast_key_cmd, igtk);
842 BUILD_BUG_ON(offsetof(struct iwl_mvm_mgmt_mcast_key_cmd, igtk) <
843 offsetof(struct iwl_mvm_mgmt_mcast_key_cmd_v1, igtk));
844 break;
845 }
846
847 if (frob_start >= frob_end)
848 return;
849
850 if (frob_end > len)
851 frob_end = len;
852
853 memset((u8 *)hcmd + frob_start, 0xAA, frob_end - frob_start);
854 }
855
iwl_mvm_frob_mem(void * ctx,u32 mem_addr,void * mem,size_t buflen)856 static void iwl_mvm_frob_mem(void *ctx, u32 mem_addr, void *mem, size_t buflen)
857 {
858 const struct iwl_dump_exclude *excl;
859 struct iwl_mvm *mvm = ctx;
860 int i;
861
862 switch (mvm->fwrt.cur_fw_img) {
863 case IWL_UCODE_INIT:
864 default:
865 /* not relevant */
866 return;
867 case IWL_UCODE_REGULAR:
868 case IWL_UCODE_REGULAR_USNIFFER:
869 excl = mvm->fw->dump_excl;
870 break;
871 case IWL_UCODE_WOWLAN:
872 excl = mvm->fw->dump_excl_wowlan;
873 break;
874 }
875
876 BUILD_BUG_ON(sizeof(mvm->fw->dump_excl) !=
877 sizeof(mvm->fw->dump_excl_wowlan));
878
879 for (i = 0; i < ARRAY_SIZE(mvm->fw->dump_excl); i++) {
880 u32 start, end;
881
882 if (!excl[i].addr || !excl[i].size)
883 continue;
884
885 start = excl[i].addr;
886 end = start + excl[i].size;
887
888 if (end <= mem_addr || start >= mem_addr + buflen)
889 continue;
890
891 if (start < mem_addr)
892 start = mem_addr;
893
894 if (end > mem_addr + buflen)
895 end = mem_addr + buflen;
896
897 memset((u8 *)mem + start - mem_addr, 0xAA, end - start);
898 }
899 }
900
901 static const struct iwl_dump_sanitize_ops iwl_mvm_sanitize_ops = {
902 .frob_txf = iwl_mvm_frob_txf,
903 .frob_hcmd = iwl_mvm_frob_hcmd,
904 .frob_mem = iwl_mvm_frob_mem,
905 };
906
907 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)908 iwl_op_mode_mvm_start(struct iwl_trans *trans, const struct iwl_cfg *cfg,
909 const struct iwl_fw *fw, struct dentry *dbgfs_dir)
910 {
911 struct ieee80211_hw *hw;
912 struct iwl_op_mode *op_mode;
913 struct iwl_mvm *mvm;
914 struct iwl_trans_config trans_cfg = {};
915 static const u8 no_reclaim_cmds[] = {
916 TX_CMD,
917 };
918 int err, scan_size;
919 u32 min_backoff;
920 enum iwl_amsdu_size rb_size_default;
921
922 /*
923 * We use IWL_MVM_STATION_COUNT_MAX to check the validity of the station
924 * index all over the driver - check that its value corresponds to the
925 * array size.
926 */
927 BUILD_BUG_ON(ARRAY_SIZE(mvm->fw_id_to_mac_id) !=
928 IWL_MVM_STATION_COUNT_MAX);
929
930 /********************************
931 * 1. Allocating and configuring HW data
932 ********************************/
933 hw = ieee80211_alloc_hw(sizeof(struct iwl_op_mode) +
934 sizeof(struct iwl_mvm),
935 &iwl_mvm_hw_ops);
936 if (!hw)
937 return NULL;
938
939 hw->max_rx_aggregation_subframes = IEEE80211_MAX_AMPDU_BUF;
940
941 if (cfg->max_tx_agg_size)
942 hw->max_tx_aggregation_subframes = cfg->max_tx_agg_size;
943 else
944 hw->max_tx_aggregation_subframes = IEEE80211_MAX_AMPDU_BUF;
945
946 op_mode = hw->priv;
947
948 mvm = IWL_OP_MODE_GET_MVM(op_mode);
949 mvm->dev = trans->dev;
950 mvm->trans = trans;
951 mvm->cfg = cfg;
952 mvm->fw = fw;
953 mvm->hw = hw;
954
955 iwl_fw_runtime_init(&mvm->fwrt, trans, fw, &iwl_mvm_fwrt_ops, mvm,
956 &iwl_mvm_sanitize_ops, mvm, dbgfs_dir);
957
958 iwl_mvm_get_acpi_tables(mvm);
959
960 mvm->init_status = 0;
961
962 if (iwl_mvm_has_new_rx_api(mvm)) {
963 op_mode->ops = &iwl_mvm_ops_mq;
964 trans->rx_mpdu_cmd_hdr_size =
965 (trans->trans_cfg->device_family >=
966 IWL_DEVICE_FAMILY_AX210) ?
967 sizeof(struct iwl_rx_mpdu_desc) :
968 IWL_RX_DESC_SIZE_V1;
969 } else {
970 op_mode->ops = &iwl_mvm_ops;
971 trans->rx_mpdu_cmd_hdr_size =
972 sizeof(struct iwl_rx_mpdu_res_start);
973
974 if (WARN_ON(trans->num_rx_queues > 1))
975 goto out_free;
976 }
977
978 mvm->fw_restart = iwlwifi_mod_params.fw_restart ? -1 : 0;
979
980 if (iwl_mvm_has_new_tx_api(mvm)) {
981 /*
982 * If we have the new TX/queue allocation API initialize them
983 * all to invalid numbers. We'll rewrite the ones that we need
984 * later, but that doesn't happen for all of them all of the
985 * time (e.g. P2P Device is optional), and if a dynamic queue
986 * ends up getting number 2 (IWL_MVM_DQA_P2P_DEVICE_QUEUE) then
987 * iwl_mvm_is_static_queue() erroneously returns true, and we
988 * might have things getting stuck.
989 */
990 mvm->aux_queue = IWL_MVM_INVALID_QUEUE;
991 mvm->snif_queue = IWL_MVM_INVALID_QUEUE;
992 mvm->probe_queue = IWL_MVM_INVALID_QUEUE;
993 mvm->p2p_dev_queue = IWL_MVM_INVALID_QUEUE;
994 } else {
995 mvm->aux_queue = IWL_MVM_DQA_AUX_QUEUE;
996 mvm->snif_queue = IWL_MVM_DQA_INJECT_MONITOR_QUEUE;
997 mvm->probe_queue = IWL_MVM_DQA_AP_PROBE_RESP_QUEUE;
998 mvm->p2p_dev_queue = IWL_MVM_DQA_P2P_DEVICE_QUEUE;
999 }
1000
1001 mvm->sf_state = SF_UNINIT;
1002 if (iwl_mvm_has_unified_ucode(mvm))
1003 iwl_fw_set_current_image(&mvm->fwrt, IWL_UCODE_REGULAR);
1004 else
1005 iwl_fw_set_current_image(&mvm->fwrt, IWL_UCODE_INIT);
1006 mvm->drop_bcn_ap_mode = true;
1007
1008 mutex_init(&mvm->mutex);
1009 spin_lock_init(&mvm->async_handlers_lock);
1010 INIT_LIST_HEAD(&mvm->time_event_list);
1011 INIT_LIST_HEAD(&mvm->aux_roc_te_list);
1012 INIT_LIST_HEAD(&mvm->async_handlers_list);
1013 spin_lock_init(&mvm->time_event_lock);
1014 INIT_LIST_HEAD(&mvm->ftm_initiator.loc_list);
1015 INIT_LIST_HEAD(&mvm->ftm_initiator.pasn_list);
1016 INIT_LIST_HEAD(&mvm->resp_pasn_list);
1017
1018 INIT_WORK(&mvm->async_handlers_wk, iwl_mvm_async_handlers_wk);
1019 INIT_WORK(&mvm->roc_done_wk, iwl_mvm_roc_done_wk);
1020 INIT_DELAYED_WORK(&mvm->tdls_cs.dwork, iwl_mvm_tdls_ch_switch_work);
1021 INIT_DELAYED_WORK(&mvm->scan_timeout_dwork, iwl_mvm_scan_timeout_wk);
1022 INIT_WORK(&mvm->add_stream_wk, iwl_mvm_add_new_dqa_stream_wk);
1023 INIT_LIST_HEAD(&mvm->add_stream_txqs);
1024
1025 init_waitqueue_head(&mvm->rx_sync_waitq);
1026
1027 mvm->queue_sync_state = 0;
1028
1029 SET_IEEE80211_DEV(mvm->hw, mvm->trans->dev);
1030
1031 spin_lock_init(&mvm->tcm.lock);
1032 INIT_DELAYED_WORK(&mvm->tcm.work, iwl_mvm_tcm_work);
1033 mvm->tcm.ts = jiffies;
1034 mvm->tcm.ll_ts = jiffies;
1035 mvm->tcm.uapsd_nonagg_ts = jiffies;
1036
1037 INIT_DELAYED_WORK(&mvm->cs_tx_unblock_dwork, iwl_mvm_tx_unblock_dwork);
1038
1039 mvm->cmd_ver.d0i3_resp =
1040 iwl_fw_lookup_notif_ver(mvm->fw, LEGACY_GROUP, D0I3_END_CMD,
1041 0);
1042 /* we only support version 1 */
1043 if (WARN_ON_ONCE(mvm->cmd_ver.d0i3_resp > 1))
1044 goto out_free;
1045
1046 mvm->cmd_ver.range_resp =
1047 iwl_fw_lookup_notif_ver(mvm->fw, LOCATION_GROUP,
1048 TOF_RANGE_RESPONSE_NOTIF, 5);
1049 /* we only support up to version 9 */
1050 if (WARN_ON_ONCE(mvm->cmd_ver.range_resp > 9))
1051 goto out_free;
1052
1053 /*
1054 * Populate the state variables that the transport layer needs
1055 * to know about.
1056 */
1057 trans_cfg.op_mode = op_mode;
1058 trans_cfg.no_reclaim_cmds = no_reclaim_cmds;
1059 trans_cfg.n_no_reclaim_cmds = ARRAY_SIZE(no_reclaim_cmds);
1060
1061 if (mvm->trans->trans_cfg->device_family >= IWL_DEVICE_FAMILY_AX210)
1062 rb_size_default = IWL_AMSDU_2K;
1063 else
1064 rb_size_default = IWL_AMSDU_4K;
1065
1066 switch (iwlwifi_mod_params.amsdu_size) {
1067 case IWL_AMSDU_DEF:
1068 trans_cfg.rx_buf_size = rb_size_default;
1069 break;
1070 case IWL_AMSDU_4K:
1071 trans_cfg.rx_buf_size = IWL_AMSDU_4K;
1072 break;
1073 case IWL_AMSDU_8K:
1074 trans_cfg.rx_buf_size = IWL_AMSDU_8K;
1075 break;
1076 case IWL_AMSDU_12K:
1077 trans_cfg.rx_buf_size = IWL_AMSDU_12K;
1078 break;
1079 default:
1080 pr_err("%s: Unsupported amsdu_size: %d\n", KBUILD_MODNAME,
1081 iwlwifi_mod_params.amsdu_size);
1082 trans_cfg.rx_buf_size = rb_size_default;
1083 }
1084
1085 trans->wide_cmd_header = true;
1086 trans_cfg.bc_table_dword =
1087 mvm->trans->trans_cfg->device_family < IWL_DEVICE_FAMILY_AX210;
1088
1089 trans_cfg.command_groups = iwl_mvm_groups;
1090 trans_cfg.command_groups_size = ARRAY_SIZE(iwl_mvm_groups);
1091
1092 trans_cfg.cmd_queue = IWL_MVM_DQA_CMD_QUEUE;
1093 trans_cfg.cmd_fifo = IWL_MVM_TX_FIFO_CMD;
1094 trans_cfg.scd_set_active = true;
1095
1096 trans_cfg.cb_data_offs = offsetof(struct ieee80211_tx_info,
1097 driver_data[2]);
1098
1099 /* Set a short watchdog for the command queue */
1100 trans_cfg.cmd_q_wdg_timeout =
1101 iwl_mvm_get_wd_timeout(mvm, NULL, false, true);
1102
1103 snprintf(mvm->hw->wiphy->fw_version,
1104 sizeof(mvm->hw->wiphy->fw_version),
1105 "%s", fw->fw_version);
1106
1107 trans_cfg.fw_reset_handshake = fw_has_capa(&mvm->fw->ucode_capa,
1108 IWL_UCODE_TLV_CAPA_FW_RESET_HANDSHAKE);
1109
1110 /* Configure transport layer */
1111 iwl_trans_configure(mvm->trans, &trans_cfg);
1112
1113 trans->rx_mpdu_cmd = REPLY_RX_MPDU_CMD;
1114 trans->dbg.dest_tlv = mvm->fw->dbg.dest_tlv;
1115 trans->dbg.n_dest_reg = mvm->fw->dbg.n_dest_reg;
1116 memcpy(trans->dbg.conf_tlv, mvm->fw->dbg.conf_tlv,
1117 sizeof(trans->dbg.conf_tlv));
1118 trans->dbg.trigger_tlv = mvm->fw->dbg.trigger_tlv;
1119
1120 trans->iml = mvm->fw->iml;
1121 trans->iml_len = mvm->fw->iml_len;
1122
1123 /* set up notification wait support */
1124 iwl_notification_wait_init(&mvm->notif_wait);
1125
1126 /* Init phy db */
1127 mvm->phy_db = iwl_phy_db_init(trans);
1128 if (!mvm->phy_db) {
1129 IWL_ERR(mvm, "Cannot init phy_db\n");
1130 goto out_free;
1131 }
1132
1133 IWL_INFO(mvm, "Detected %s, REV=0x%X\n",
1134 mvm->trans->name, mvm->trans->hw_rev);
1135
1136 if (iwlwifi_mod_params.nvm_file)
1137 mvm->nvm_file_name = iwlwifi_mod_params.nvm_file;
1138 else
1139 IWL_DEBUG_EEPROM(mvm->trans->dev,
1140 "working without external nvm file\n");
1141
1142 err = iwl_trans_start_hw(mvm->trans);
1143 if (err)
1144 goto out_free;
1145
1146 scan_size = iwl_mvm_scan_size(mvm);
1147
1148 mvm->scan_cmd = kmalloc(scan_size, GFP_KERNEL);
1149 if (!mvm->scan_cmd)
1150 goto out_free;
1151
1152 /* invalidate ids to prevent accidental removal of sta_id 0 */
1153 mvm->aux_sta.sta_id = IWL_MVM_INVALID_STA;
1154 mvm->snif_sta.sta_id = IWL_MVM_INVALID_STA;
1155
1156 /* Set EBS as successful as long as not stated otherwise by the FW. */
1157 mvm->last_ebs_successful = true;
1158
1159 min_backoff = iwl_mvm_min_backoff(mvm);
1160 iwl_mvm_thermal_initialize(mvm, min_backoff);
1161
1162 if (!iwl_mvm_has_new_rx_stats_api(mvm))
1163 memset(&mvm->rx_stats_v3, 0,
1164 sizeof(struct mvm_statistics_rx_v3));
1165 else
1166 memset(&mvm->rx_stats, 0, sizeof(struct mvm_statistics_rx));
1167
1168 mvm->debugfs_dir = dbgfs_dir;
1169
1170 if (iwl_mvm_start_get_nvm(mvm))
1171 goto out_thermal_exit;
1172
1173 if (iwl_mvm_start_post_nvm(mvm))
1174 goto out_thermal_exit;
1175
1176 return op_mode;
1177
1178 out_thermal_exit:
1179 iwl_mvm_thermal_exit(mvm);
1180 out_free:
1181 iwl_fw_flush_dumps(&mvm->fwrt);
1182 iwl_fw_runtime_free(&mvm->fwrt);
1183
1184 if (iwlmvm_mod_params.init_dbg)
1185 return op_mode;
1186 iwl_phy_db_free(mvm->phy_db);
1187 kfree(mvm->scan_cmd);
1188 iwl_trans_op_mode_leave(trans);
1189
1190 ieee80211_free_hw(mvm->hw);
1191 return NULL;
1192 }
1193
iwl_mvm_stop_device(struct iwl_mvm * mvm)1194 void iwl_mvm_stop_device(struct iwl_mvm *mvm)
1195 {
1196 lockdep_assert_held(&mvm->mutex);
1197
1198 iwl_fw_cancel_timestamp(&mvm->fwrt);
1199
1200 clear_bit(IWL_MVM_STATUS_FIRMWARE_RUNNING, &mvm->status);
1201
1202 iwl_fw_dbg_stop_sync(&mvm->fwrt);
1203 iwl_trans_stop_device(mvm->trans);
1204 iwl_free_fw_paging(&mvm->fwrt);
1205 iwl_fw_dump_conf_clear(&mvm->fwrt);
1206 }
1207
iwl_op_mode_mvm_stop(struct iwl_op_mode * op_mode)1208 static void iwl_op_mode_mvm_stop(struct iwl_op_mode *op_mode)
1209 {
1210 struct iwl_mvm *mvm = IWL_OP_MODE_GET_MVM(op_mode);
1211 int i;
1212
1213 iwl_mvm_leds_exit(mvm);
1214
1215 iwl_mvm_thermal_exit(mvm);
1216
1217 ieee80211_unregister_hw(mvm->hw);
1218
1219 kfree(mvm->scan_cmd);
1220 kfree(mvm->mcast_filter_cmd);
1221 mvm->mcast_filter_cmd = NULL;
1222
1223 kfree(mvm->error_recovery_buf);
1224 mvm->error_recovery_buf = NULL;
1225
1226 iwl_trans_op_mode_leave(mvm->trans);
1227
1228 iwl_phy_db_free(mvm->phy_db);
1229 mvm->phy_db = NULL;
1230
1231 kfree(mvm->nvm_data);
1232 for (i = 0; i < NVM_MAX_NUM_SECTIONS; i++)
1233 kfree(mvm->nvm_sections[i].data);
1234
1235 cancel_delayed_work_sync(&mvm->tcm.work);
1236
1237 iwl_fw_runtime_free(&mvm->fwrt);
1238 mutex_destroy(&mvm->mutex);
1239
1240 ieee80211_free_hw(mvm->hw);
1241 }
1242
1243 struct iwl_async_handler_entry {
1244 struct list_head list;
1245 struct iwl_rx_cmd_buffer rxb;
1246 enum iwl_rx_handler_context context;
1247 void (*fn)(struct iwl_mvm *mvm, struct iwl_rx_cmd_buffer *rxb);
1248 };
1249
iwl_mvm_async_handlers_purge(struct iwl_mvm * mvm)1250 void iwl_mvm_async_handlers_purge(struct iwl_mvm *mvm)
1251 {
1252 struct iwl_async_handler_entry *entry, *tmp;
1253
1254 spin_lock_bh(&mvm->async_handlers_lock);
1255 list_for_each_entry_safe(entry, tmp, &mvm->async_handlers_list, list) {
1256 iwl_free_rxb(&entry->rxb);
1257 list_del(&entry->list);
1258 kfree(entry);
1259 }
1260 spin_unlock_bh(&mvm->async_handlers_lock);
1261 }
1262
iwl_mvm_async_handlers_wk(struct work_struct * wk)1263 static void iwl_mvm_async_handlers_wk(struct work_struct *wk)
1264 {
1265 struct iwl_mvm *mvm =
1266 container_of(wk, struct iwl_mvm, async_handlers_wk);
1267 struct iwl_async_handler_entry *entry, *tmp;
1268 LIST_HEAD(local_list);
1269
1270 /* Ensure that we are not in stop flow (check iwl_mvm_mac_stop) */
1271
1272 /*
1273 * Sync with Rx path with a lock. Remove all the entries from this list,
1274 * add them to a local one (lock free), and then handle them.
1275 */
1276 spin_lock_bh(&mvm->async_handlers_lock);
1277 list_splice_init(&mvm->async_handlers_list, &local_list);
1278 spin_unlock_bh(&mvm->async_handlers_lock);
1279
1280 list_for_each_entry_safe(entry, tmp, &local_list, list) {
1281 if (entry->context == RX_HANDLER_ASYNC_LOCKED)
1282 mutex_lock(&mvm->mutex);
1283 entry->fn(mvm, &entry->rxb);
1284 iwl_free_rxb(&entry->rxb);
1285 list_del(&entry->list);
1286 if (entry->context == RX_HANDLER_ASYNC_LOCKED)
1287 mutex_unlock(&mvm->mutex);
1288 kfree(entry);
1289 }
1290 }
1291
iwl_mvm_rx_check_trigger(struct iwl_mvm * mvm,struct iwl_rx_packet * pkt)1292 static inline void iwl_mvm_rx_check_trigger(struct iwl_mvm *mvm,
1293 struct iwl_rx_packet *pkt)
1294 {
1295 struct iwl_fw_dbg_trigger_tlv *trig;
1296 struct iwl_fw_dbg_trigger_cmd *cmds_trig;
1297 int i;
1298
1299 trig = iwl_fw_dbg_trigger_on(&mvm->fwrt, NULL,
1300 FW_DBG_TRIGGER_FW_NOTIF);
1301 if (!trig)
1302 return;
1303
1304 cmds_trig = (void *)trig->data;
1305
1306 for (i = 0; i < ARRAY_SIZE(cmds_trig->cmds); i++) {
1307 /* don't collect on CMD 0 */
1308 if (!cmds_trig->cmds[i].cmd_id)
1309 break;
1310
1311 if (cmds_trig->cmds[i].cmd_id != pkt->hdr.cmd ||
1312 cmds_trig->cmds[i].group_id != pkt->hdr.group_id)
1313 continue;
1314
1315 iwl_fw_dbg_collect_trig(&mvm->fwrt, trig,
1316 "CMD 0x%02x.%02x received",
1317 pkt->hdr.group_id, pkt->hdr.cmd);
1318 break;
1319 }
1320 }
1321
iwl_mvm_rx_common(struct iwl_mvm * mvm,struct iwl_rx_cmd_buffer * rxb,struct iwl_rx_packet * pkt)1322 static void iwl_mvm_rx_common(struct iwl_mvm *mvm,
1323 struct iwl_rx_cmd_buffer *rxb,
1324 struct iwl_rx_packet *pkt)
1325 {
1326 unsigned int pkt_len = iwl_rx_packet_payload_len(pkt);
1327 int i;
1328 union iwl_dbg_tlv_tp_data tp_data = { .fw_pkt = pkt };
1329
1330 iwl_dbg_tlv_time_point(&mvm->fwrt,
1331 IWL_FW_INI_TIME_POINT_FW_RSP_OR_NOTIF, &tp_data);
1332 iwl_mvm_rx_check_trigger(mvm, pkt);
1333
1334 /*
1335 * Do the notification wait before RX handlers so
1336 * even if the RX handler consumes the RXB we have
1337 * access to it in the notification wait entry.
1338 */
1339 iwl_notification_wait_notify(&mvm->notif_wait, pkt);
1340
1341 for (i = 0; i < ARRAY_SIZE(iwl_mvm_rx_handlers); i++) {
1342 const struct iwl_rx_handlers *rx_h = &iwl_mvm_rx_handlers[i];
1343 struct iwl_async_handler_entry *entry;
1344
1345 if (rx_h->cmd_id != WIDE_ID(pkt->hdr.group_id, pkt->hdr.cmd))
1346 continue;
1347
1348 if (unlikely(pkt_len < rx_h->min_size))
1349 return;
1350
1351 if (rx_h->context == RX_HANDLER_SYNC) {
1352 rx_h->fn(mvm, rxb);
1353 return;
1354 }
1355
1356 entry = kzalloc(sizeof(*entry), GFP_ATOMIC);
1357 /* we can't do much... */
1358 if (!entry)
1359 return;
1360
1361 entry->rxb._page = rxb_steal_page(rxb);
1362 entry->rxb._offset = rxb->_offset;
1363 entry->rxb._rx_page_order = rxb->_rx_page_order;
1364 entry->fn = rx_h->fn;
1365 entry->context = rx_h->context;
1366 spin_lock(&mvm->async_handlers_lock);
1367 list_add_tail(&entry->list, &mvm->async_handlers_list);
1368 spin_unlock(&mvm->async_handlers_lock);
1369 schedule_work(&mvm->async_handlers_wk);
1370 break;
1371 }
1372 }
1373
iwl_mvm_rx(struct iwl_op_mode * op_mode,struct napi_struct * napi,struct iwl_rx_cmd_buffer * rxb)1374 static void iwl_mvm_rx(struct iwl_op_mode *op_mode,
1375 struct napi_struct *napi,
1376 struct iwl_rx_cmd_buffer *rxb)
1377 {
1378 struct iwl_rx_packet *pkt = rxb_addr(rxb);
1379 struct iwl_mvm *mvm = IWL_OP_MODE_GET_MVM(op_mode);
1380 u16 cmd = WIDE_ID(pkt->hdr.group_id, pkt->hdr.cmd);
1381
1382 if (likely(cmd == WIDE_ID(LEGACY_GROUP, REPLY_RX_MPDU_CMD)))
1383 iwl_mvm_rx_rx_mpdu(mvm, napi, rxb);
1384 else if (cmd == WIDE_ID(LEGACY_GROUP, REPLY_RX_PHY_CMD))
1385 iwl_mvm_rx_rx_phy_cmd(mvm, rxb);
1386 else
1387 iwl_mvm_rx_common(mvm, rxb, pkt);
1388 }
1389
iwl_mvm_rx_mq(struct iwl_op_mode * op_mode,struct napi_struct * napi,struct iwl_rx_cmd_buffer * rxb)1390 void iwl_mvm_rx_mq(struct iwl_op_mode *op_mode,
1391 struct napi_struct *napi,
1392 struct iwl_rx_cmd_buffer *rxb)
1393 {
1394 struct iwl_rx_packet *pkt = rxb_addr(rxb);
1395 struct iwl_mvm *mvm = IWL_OP_MODE_GET_MVM(op_mode);
1396 u16 cmd = WIDE_ID(pkt->hdr.group_id, pkt->hdr.cmd);
1397
1398 if (likely(cmd == WIDE_ID(LEGACY_GROUP, REPLY_RX_MPDU_CMD)))
1399 iwl_mvm_rx_mpdu_mq(mvm, napi, rxb, 0);
1400 else if (unlikely(cmd == WIDE_ID(DATA_PATH_GROUP,
1401 RX_QUEUES_NOTIFICATION)))
1402 iwl_mvm_rx_queue_notif(mvm, napi, rxb, 0);
1403 else if (cmd == WIDE_ID(LEGACY_GROUP, FRAME_RELEASE))
1404 iwl_mvm_rx_frame_release(mvm, napi, rxb, 0);
1405 else if (cmd == WIDE_ID(LEGACY_GROUP, BAR_FRAME_RELEASE))
1406 iwl_mvm_rx_bar_frame_release(mvm, napi, rxb, 0);
1407 else if (cmd == WIDE_ID(DATA_PATH_GROUP, RX_NO_DATA_NOTIF))
1408 iwl_mvm_rx_monitor_no_data(mvm, napi, rxb, 0);
1409 else
1410 iwl_mvm_rx_common(mvm, rxb, pkt);
1411 }
1412
iwl_mvm_async_cb(struct iwl_op_mode * op_mode,const struct iwl_device_cmd * cmd)1413 static void iwl_mvm_async_cb(struct iwl_op_mode *op_mode,
1414 const struct iwl_device_cmd *cmd)
1415 {
1416 struct iwl_mvm *mvm = IWL_OP_MODE_GET_MVM(op_mode);
1417
1418 /*
1419 * For now, we only set the CMD_WANT_ASYNC_CALLBACK for ADD_STA
1420 * commands that need to block the Tx queues.
1421 */
1422 iwl_trans_block_txq_ptrs(mvm->trans, false);
1423 }
1424
iwl_mvm_is_static_queue(struct iwl_mvm * mvm,int queue)1425 static int iwl_mvm_is_static_queue(struct iwl_mvm *mvm, int queue)
1426 {
1427 return queue == mvm->aux_queue || queue == mvm->probe_queue ||
1428 queue == mvm->p2p_dev_queue || queue == mvm->snif_queue;
1429 }
1430
iwl_mvm_queue_state_change(struct iwl_op_mode * op_mode,int hw_queue,bool start)1431 static void iwl_mvm_queue_state_change(struct iwl_op_mode *op_mode,
1432 int hw_queue, bool start)
1433 {
1434 struct iwl_mvm *mvm = IWL_OP_MODE_GET_MVM(op_mode);
1435 struct ieee80211_sta *sta;
1436 struct ieee80211_txq *txq;
1437 struct iwl_mvm_txq *mvmtxq;
1438 int i;
1439 unsigned long tid_bitmap;
1440 struct iwl_mvm_sta *mvmsta;
1441 u8 sta_id;
1442
1443 sta_id = iwl_mvm_has_new_tx_api(mvm) ?
1444 mvm->tvqm_info[hw_queue].sta_id :
1445 mvm->queue_info[hw_queue].ra_sta_id;
1446
1447 if (WARN_ON_ONCE(sta_id >= mvm->fw->ucode_capa.num_stations))
1448 return;
1449
1450 rcu_read_lock();
1451
1452 sta = rcu_dereference(mvm->fw_id_to_mac_id[sta_id]);
1453 if (IS_ERR_OR_NULL(sta))
1454 goto out;
1455 mvmsta = iwl_mvm_sta_from_mac80211(sta);
1456
1457 if (iwl_mvm_is_static_queue(mvm, hw_queue)) {
1458 if (!start)
1459 ieee80211_stop_queues(mvm->hw);
1460 else if (mvmsta->sta_state != IEEE80211_STA_NOTEXIST)
1461 ieee80211_wake_queues(mvm->hw);
1462
1463 goto out;
1464 }
1465
1466 if (iwl_mvm_has_new_tx_api(mvm)) {
1467 int tid = mvm->tvqm_info[hw_queue].txq_tid;
1468
1469 tid_bitmap = BIT(tid);
1470 } else {
1471 tid_bitmap = mvm->queue_info[hw_queue].tid_bitmap;
1472 }
1473
1474 for_each_set_bit(i, &tid_bitmap, IWL_MAX_TID_COUNT + 1) {
1475 int tid = i;
1476
1477 if (tid == IWL_MAX_TID_COUNT)
1478 tid = IEEE80211_NUM_TIDS;
1479
1480 txq = sta->txq[tid];
1481 mvmtxq = iwl_mvm_txq_from_mac80211(txq);
1482 mvmtxq->stopped = !start;
1483
1484 if (start && mvmsta->sta_state != IEEE80211_STA_NOTEXIST)
1485 iwl_mvm_mac_itxq_xmit(mvm->hw, txq);
1486 }
1487
1488 out:
1489 rcu_read_unlock();
1490 }
1491
iwl_mvm_stop_sw_queue(struct iwl_op_mode * op_mode,int hw_queue)1492 static void iwl_mvm_stop_sw_queue(struct iwl_op_mode *op_mode, int hw_queue)
1493 {
1494 iwl_mvm_queue_state_change(op_mode, hw_queue, false);
1495 }
1496
iwl_mvm_wake_sw_queue(struct iwl_op_mode * op_mode,int hw_queue)1497 static void iwl_mvm_wake_sw_queue(struct iwl_op_mode *op_mode, int hw_queue)
1498 {
1499 iwl_mvm_queue_state_change(op_mode, hw_queue, true);
1500 }
1501
iwl_mvm_set_rfkill_state(struct iwl_mvm * mvm)1502 static void iwl_mvm_set_rfkill_state(struct iwl_mvm *mvm)
1503 {
1504 bool state = iwl_mvm_is_radio_killed(mvm);
1505
1506 if (state)
1507 wake_up(&mvm->rx_sync_waitq);
1508
1509 wiphy_rfkill_set_hw_state(mvm->hw->wiphy, state);
1510 }
1511
iwl_mvm_set_hw_ctkill_state(struct iwl_mvm * mvm,bool state)1512 void iwl_mvm_set_hw_ctkill_state(struct iwl_mvm *mvm, bool state)
1513 {
1514 if (state)
1515 set_bit(IWL_MVM_STATUS_HW_CTKILL, &mvm->status);
1516 else
1517 clear_bit(IWL_MVM_STATUS_HW_CTKILL, &mvm->status);
1518
1519 iwl_mvm_set_rfkill_state(mvm);
1520 }
1521
iwl_mvm_set_hw_rfkill_state(struct iwl_op_mode * op_mode,bool state)1522 static bool iwl_mvm_set_hw_rfkill_state(struct iwl_op_mode *op_mode, bool state)
1523 {
1524 struct iwl_mvm *mvm = IWL_OP_MODE_GET_MVM(op_mode);
1525 bool rfkill_safe_init_done = READ_ONCE(mvm->rfkill_safe_init_done);
1526 bool unified = iwl_mvm_has_unified_ucode(mvm);
1527
1528 if (state)
1529 set_bit(IWL_MVM_STATUS_HW_RFKILL, &mvm->status);
1530 else
1531 clear_bit(IWL_MVM_STATUS_HW_RFKILL, &mvm->status);
1532
1533 iwl_mvm_set_rfkill_state(mvm);
1534
1535 /* iwl_run_init_mvm_ucode is waiting for results, abort it. */
1536 if (rfkill_safe_init_done)
1537 iwl_abort_notification_waits(&mvm->notif_wait);
1538
1539 /*
1540 * Don't ask the transport to stop the firmware. We'll do it
1541 * after cfg80211 takes us down.
1542 */
1543 if (unified)
1544 return false;
1545
1546 /*
1547 * Stop the device if we run OPERATIONAL firmware or if we are in the
1548 * middle of the calibrations.
1549 */
1550 return state && rfkill_safe_init_done;
1551 }
1552
iwl_mvm_free_skb(struct iwl_op_mode * op_mode,struct sk_buff * skb)1553 static void iwl_mvm_free_skb(struct iwl_op_mode *op_mode, struct sk_buff *skb)
1554 {
1555 struct iwl_mvm *mvm = IWL_OP_MODE_GET_MVM(op_mode);
1556 struct ieee80211_tx_info *info;
1557
1558 info = IEEE80211_SKB_CB(skb);
1559 iwl_trans_free_tx_cmd(mvm->trans, info->driver_data[1]);
1560 ieee80211_free_txskb(mvm->hw, skb);
1561 }
1562
1563 struct iwl_mvm_reprobe {
1564 struct device *dev;
1565 struct work_struct work;
1566 };
1567
iwl_mvm_reprobe_wk(struct work_struct * wk)1568 static void iwl_mvm_reprobe_wk(struct work_struct *wk)
1569 {
1570 struct iwl_mvm_reprobe *reprobe;
1571
1572 reprobe = container_of(wk, struct iwl_mvm_reprobe, work);
1573 if (device_reprobe(reprobe->dev))
1574 dev_err(reprobe->dev, "reprobe failed!\n");
1575 put_device(reprobe->dev);
1576 kfree(reprobe);
1577 module_put(THIS_MODULE);
1578 }
1579
iwl_mvm_nic_restart(struct iwl_mvm * mvm,bool fw_error)1580 void iwl_mvm_nic_restart(struct iwl_mvm *mvm, bool fw_error)
1581 {
1582 iwl_abort_notification_waits(&mvm->notif_wait);
1583 iwl_dbg_tlv_del_timers(mvm->trans);
1584
1585 /*
1586 * This is a bit racy, but worst case we tell mac80211 about
1587 * a stopped/aborted scan when that was already done which
1588 * is not a problem. It is necessary to abort any os scan
1589 * here because mac80211 requires having the scan cleared
1590 * before restarting.
1591 * We'll reset the scan_status to NONE in restart cleanup in
1592 * the next start() call from mac80211. If restart isn't called
1593 * (no fw restart) scan status will stay busy.
1594 */
1595 iwl_mvm_report_scan_aborted(mvm);
1596
1597 /*
1598 * If we're restarting already, don't cycle restarts.
1599 * If INIT fw asserted, it will likely fail again.
1600 * If WoWLAN fw asserted, don't restart either, mac80211
1601 * can't recover this since we're already half suspended.
1602 */
1603 if (!mvm->fw_restart && fw_error) {
1604 iwl_fw_error_collect(&mvm->fwrt, false);
1605 } else if (test_bit(IWL_MVM_STATUS_STARTING,
1606 &mvm->status)) {
1607 IWL_ERR(mvm, "Starting mac, retry will be triggered anyway\n");
1608 } else if (test_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status)) {
1609 struct iwl_mvm_reprobe *reprobe;
1610
1611 IWL_ERR(mvm,
1612 "Firmware error during reconfiguration - reprobe!\n");
1613
1614 /*
1615 * get a module reference to avoid doing this while unloading
1616 * anyway and to avoid scheduling a work with code that's
1617 * being removed.
1618 */
1619 if (!try_module_get(THIS_MODULE)) {
1620 IWL_ERR(mvm, "Module is being unloaded - abort\n");
1621 return;
1622 }
1623
1624 reprobe = kzalloc(sizeof(*reprobe), GFP_ATOMIC);
1625 if (!reprobe) {
1626 module_put(THIS_MODULE);
1627 return;
1628 }
1629 reprobe->dev = get_device(mvm->trans->dev);
1630 INIT_WORK(&reprobe->work, iwl_mvm_reprobe_wk);
1631 schedule_work(&reprobe->work);
1632 } else if (test_bit(IWL_MVM_STATUS_HW_RESTART_REQUESTED,
1633 &mvm->status)) {
1634 IWL_ERR(mvm, "HW restart already requested, but not started\n");
1635 } else if (mvm->fwrt.cur_fw_img == IWL_UCODE_REGULAR &&
1636 mvm->hw_registered &&
1637 !test_bit(STATUS_TRANS_DEAD, &mvm->trans->status)) {
1638 /* This should be first thing before trying to collect any
1639 * data to avoid endless loops if any HW error happens while
1640 * collecting debug data.
1641 */
1642 set_bit(IWL_MVM_STATUS_HW_RESTART_REQUESTED, &mvm->status);
1643
1644 if (mvm->fw->ucode_capa.error_log_size) {
1645 u32 src_size = mvm->fw->ucode_capa.error_log_size;
1646 u32 src_addr = mvm->fw->ucode_capa.error_log_addr;
1647 u8 *recover_buf = kzalloc(src_size, GFP_ATOMIC);
1648
1649 if (recover_buf) {
1650 mvm->error_recovery_buf = recover_buf;
1651 iwl_trans_read_mem_bytes(mvm->trans,
1652 src_addr,
1653 recover_buf,
1654 src_size);
1655 }
1656 }
1657
1658 iwl_fw_error_collect(&mvm->fwrt, false);
1659
1660 if (fw_error && mvm->fw_restart > 0)
1661 mvm->fw_restart--;
1662 ieee80211_restart_hw(mvm->hw);
1663 }
1664 }
1665
iwl_mvm_nic_error(struct iwl_op_mode * op_mode,bool sync)1666 static void iwl_mvm_nic_error(struct iwl_op_mode *op_mode, bool sync)
1667 {
1668 struct iwl_mvm *mvm = IWL_OP_MODE_GET_MVM(op_mode);
1669
1670 if (!test_bit(STATUS_TRANS_DEAD, &mvm->trans->status))
1671 iwl_mvm_dump_nic_error_log(mvm);
1672
1673 if (sync) {
1674 iwl_fw_error_collect(&mvm->fwrt, true);
1675 /*
1676 * Currently, the only case for sync=true is during
1677 * shutdown, so just stop in this case. If/when that
1678 * changes, we need to be a bit smarter here.
1679 */
1680 return;
1681 }
1682
1683 /*
1684 * If the firmware crashes while we're already considering it
1685 * to be dead then don't ask for a restart, that cannot do
1686 * anything useful anyway.
1687 */
1688 if (!test_bit(IWL_MVM_STATUS_FIRMWARE_RUNNING, &mvm->status))
1689 return;
1690
1691 iwl_mvm_nic_restart(mvm, true);
1692 }
1693
iwl_mvm_cmd_queue_full(struct iwl_op_mode * op_mode)1694 static void iwl_mvm_cmd_queue_full(struct iwl_op_mode *op_mode)
1695 {
1696 struct iwl_mvm *mvm = IWL_OP_MODE_GET_MVM(op_mode);
1697
1698 WARN_ON(1);
1699 iwl_mvm_nic_restart(mvm, true);
1700 }
1701
iwl_op_mode_mvm_time_point(struct iwl_op_mode * op_mode,enum iwl_fw_ini_time_point tp_id,union iwl_dbg_tlv_tp_data * tp_data)1702 static void iwl_op_mode_mvm_time_point(struct iwl_op_mode *op_mode,
1703 enum iwl_fw_ini_time_point tp_id,
1704 union iwl_dbg_tlv_tp_data *tp_data)
1705 {
1706 struct iwl_mvm *mvm = IWL_OP_MODE_GET_MVM(op_mode);
1707
1708 iwl_dbg_tlv_time_point(&mvm->fwrt, tp_id, tp_data);
1709 }
1710
1711 #define IWL_MVM_COMMON_OPS \
1712 /* these could be differentiated */ \
1713 .async_cb = iwl_mvm_async_cb, \
1714 .queue_full = iwl_mvm_stop_sw_queue, \
1715 .queue_not_full = iwl_mvm_wake_sw_queue, \
1716 .hw_rf_kill = iwl_mvm_set_hw_rfkill_state, \
1717 .free_skb = iwl_mvm_free_skb, \
1718 .nic_error = iwl_mvm_nic_error, \
1719 .cmd_queue_full = iwl_mvm_cmd_queue_full, \
1720 .nic_config = iwl_mvm_nic_config, \
1721 /* as we only register one, these MUST be common! */ \
1722 .start = iwl_op_mode_mvm_start, \
1723 .stop = iwl_op_mode_mvm_stop, \
1724 .time_point = iwl_op_mode_mvm_time_point
1725
1726 static const struct iwl_op_mode_ops iwl_mvm_ops = {
1727 IWL_MVM_COMMON_OPS,
1728 .rx = iwl_mvm_rx,
1729 };
1730
iwl_mvm_rx_mq_rss(struct iwl_op_mode * op_mode,struct napi_struct * napi,struct iwl_rx_cmd_buffer * rxb,unsigned int queue)1731 static void iwl_mvm_rx_mq_rss(struct iwl_op_mode *op_mode,
1732 struct napi_struct *napi,
1733 struct iwl_rx_cmd_buffer *rxb,
1734 unsigned int queue)
1735 {
1736 struct iwl_mvm *mvm = IWL_OP_MODE_GET_MVM(op_mode);
1737 struct iwl_rx_packet *pkt = rxb_addr(rxb);
1738 u16 cmd = WIDE_ID(pkt->hdr.group_id, pkt->hdr.cmd);
1739
1740 if (unlikely(cmd == WIDE_ID(LEGACY_GROUP, FRAME_RELEASE)))
1741 iwl_mvm_rx_frame_release(mvm, napi, rxb, queue);
1742 else if (unlikely(cmd == WIDE_ID(DATA_PATH_GROUP,
1743 RX_QUEUES_NOTIFICATION)))
1744 iwl_mvm_rx_queue_notif(mvm, napi, rxb, queue);
1745 else if (likely(cmd == WIDE_ID(LEGACY_GROUP, REPLY_RX_MPDU_CMD)))
1746 iwl_mvm_rx_mpdu_mq(mvm, napi, rxb, queue);
1747 }
1748
1749 static const struct iwl_op_mode_ops iwl_mvm_ops_mq = {
1750 IWL_MVM_COMMON_OPS,
1751 .rx = iwl_mvm_rx_mq,
1752 .rx_rss = iwl_mvm_rx_mq_rss,
1753 };
1754