drivers/net/wireless/iwlwifi/mvm/mvm.h

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   8  * Copyright(c) 2012 - 2013 Intel Corporation. All rights reserved.
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  28  *  Intel Linux Wireless <ilw@linux.intel.com>
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  63
  64 #ifndef __IWL_MVM_H__
  65 #define __IWL_MVM_H__
  66
  67 #include <linux/list.h>
  68 #include <linux/spinlock.h>
  69 #include <linux/leds.h>
  70 #include <linux/in6.h>
  71
  72 #include "iwl-op-mode.h"
  73 #include "iwl-trans.h"
  74 #include "iwl-notif-wait.h"
  75 #include "iwl-eeprom-parse.h"
  76 #include "iwl-test.h"
  77 #include "iwl-trans.h"
  78 #include "sta.h"
  79 #include "fw-api.h"
  80
  81 #define IWL_INVALID_MAC80211_QUEUE      0xff
  82 #define IWL_MVM_MAX_ADDRESSES           5
  83 /* RSSI offset for WkP */
  84 #define IWL_RSSI_OFFSET 50
  85
  86 enum iwl_mvm_tx_fifo {
  87         IWL_MVM_TX_FIFO_BK = 0,
  88         IWL_MVM_TX_FIFO_BE,
  89         IWL_MVM_TX_FIFO_VI,
  90         IWL_MVM_TX_FIFO_VO,
  91 };
  92
  93 extern struct ieee80211_ops iwl_mvm_hw_ops;
  94 /**
  95  * struct iwl_mvm_mod_params - module parameters for iwlmvm
  96  * @init_dbg: if true, then the NIC won't be stopped if the INIT fw asserted.
  97  *      We will register to mac80211 to have testmode working. The NIC must not
  98  *      be up'ed after the INIT fw asserted. This is useful to be able to use
  99  *      proprietary tools over testmode to debug the INIT fw.
 100  * @power_scheme: CAM(Continuous Active Mode)-1, BPS(Balanced Power
 101  *      Save)-2(default), LP(Low Power)-3
 102  */
 103 struct iwl_mvm_mod_params {
 104         bool init_dbg;
 105         int power_scheme;
 106 };
 107 extern struct iwl_mvm_mod_params iwlmvm_mod_params;
 108
 109 struct iwl_mvm_phy_ctxt {
 110         u16 id;
 111         u16 color;
 112
 113         /*
 114          * TODO: This should probably be removed. Currently here only for rate
 115          * scaling algorithm
 116          */
 117         struct ieee80211_channel *channel;
 118 };
 119
 120 struct iwl_mvm_time_event_data {
 121         struct ieee80211_vif *vif;
 122         struct list_head list;
 123         unsigned long end_jiffies;
 124         u32 duration;
 125         bool running;
 126         u32 uid;
 127
 128         /*
 129          * The access to the 'id' field must be done when the
 130          * mvm->time_event_lock is held, as it value is used to indicate
 131          * if the te is in the time event list or not (when id == TE_MAX)
 132          */
 133         u32 id;
 134 };
 135
 136  /* Power management */
 137
 138 /**
 139  * enum iwl_power_scheme
 140  * @IWL_POWER_LEVEL_CAM - Continuously Active Mode
 141  * @IWL_POWER_LEVEL_BPS - Balanced Power Save (default)
 142  * @IWL_POWER_LEVEL_LP  - Low Power
 143  */
 144 enum iwl_power_scheme {
 145         IWL_POWER_SCHEME_CAM = 1,
 146         IWL_POWER_SCHEME_BPS,
 147         IWL_POWER_SCHEME_LP
 148 };
 149
 150 #define IWL_CONN_MAX_LISTEN_INTERVAL    70
 151
 152 /**
 153  * struct iwl_mvm_vif - data per Virtual Interface, it is a MAC context
 154  * @id: between 0 and 3
 155  * @color: to solve races upon MAC addition and removal
 156  * @ap_sta_id: the sta_id of the AP - valid only if VIF type is STA
 157  * @uploaded: indicates the MAC context has been added to the device
 158  * @ap_active: indicates that ap context is configured, and that the interface
 159  *  should get quota etc.
 160  * @monitor_active: indicates that monitor context is configured, and that the
 161  * interface should get quota etc.
 162  * @queue_params: QoS params for this MAC
 163  * @bcast_sta: station used for broadcast packets. Used by the following
 164  *  vifs: P2P_DEVICE, GO and AP.
 165  * @beacon_skb: the skb used to hold the AP/GO beacon template
 166  */
 167 struct iwl_mvm_vif {
 168         u16 id;
 169         u16 color;
 170         u8 ap_sta_id;
 171
 172         bool uploaded;
 173         bool ap_active;
 174         bool monitor_active;
 175
 176         u32 ap_beacon_time;
 177
 178         enum iwl_tsf_id tsf_id;
 179
 180         /*
 181          * QoS data from mac80211, need to store this here
 182          * as mac80211 has a separate callback but we need
 183          * to have the data for the MAC context
 184          */
 185         struct ieee80211_tx_queue_params queue_params[IEEE80211_NUM_ACS];
 186         struct iwl_mvm_time_event_data time_event_data;
 187
 188         struct iwl_mvm_int_sta bcast_sta;
 189
 190         /*
 191          * Assigned while mac80211 has the interface in a channel context,
 192          * or, for P2P Device, while it exists.
 193          */
 194         struct iwl_mvm_phy_ctxt *phy_ctxt;
 195
 196 #ifdef CONFIG_PM_SLEEP
 197         /* WoWLAN GTK rekey data */
 198         struct {
 199                 u8 kck[NL80211_KCK_LEN], kek[NL80211_KEK_LEN];
 200                 __le64 replay_ctr;
 201                 bool valid;
 202         } rekey_data;
 203
 204         int tx_key_idx;
 205
 206 #if IS_ENABLED(CONFIG_IPV6)
 207         /* IPv6 addresses for WoWLAN */
 208         struct in6_addr target_ipv6_addrs[IWL_PROTO_OFFLOAD_NUM_IPV6_ADDRS];
 209         int num_target_ipv6_addrs;
 210 #endif
 211 #endif
 212
 213 #ifdef CONFIG_IWLWIFI_DEBUGFS
 214         struct dentry *dbgfs_dir;
 215         struct dentry *dbgfs_slink;
 216         void *dbgfs_data;
 217 #endif
 218 };
 219
 220 static inline struct iwl_mvm_vif *
 221 iwl_mvm_vif_from_mac80211(struct ieee80211_vif *vif)
 222 {
 223         return (void *)vif->drv_priv;
 224 }
 225
 226 enum iwl_mvm_status {
 227         IWL_MVM_STATUS_HW_RFKILL,
 228         IWL_MVM_STATUS_ROC_RUNNING,
 229         IWL_MVM_STATUS_IN_HW_RESTART,
 230 };
 231
 232 enum iwl_scan_status {
 233         IWL_MVM_SCAN_NONE,
 234         IWL_MVM_SCAN_OS,
 235 };
 236
 237 /**
 238  * struct iwl_nvm_section - describes an NVM section in memory.
 239  *
 240  * This struct holds an NVM section read from the NIC using NVM_ACCESS_CMD,
 241  * and saved for later use by the driver. Not all NVM sections are saved
 242  * this way, only the needed ones.
 243  */
 244 struct iwl_nvm_section {
 245         u16 length;
 246         const u8 *data;
 247 };
 248
 249 struct iwl_mvm {
 250         /* for logger access */
 251         struct device *dev;
 252
 253         struct iwl_trans *trans;
 254         const struct iwl_fw *fw;
 255         const struct iwl_cfg *cfg;
 256         struct iwl_phy_db *phy_db;
 257         struct ieee80211_hw *hw;
 258
 259         /* for protecting access to iwl_mvm */
 260         struct mutex mutex;
 261         struct list_head async_handlers_list;
 262         spinlock_t async_handlers_lock;
 263         struct work_struct async_handlers_wk;
 264
 265         struct work_struct roc_done_wk;
 266
 267         unsigned long status;
 268
 269         enum iwl_ucode_type cur_ucode;
 270         bool ucode_loaded;
 271         bool init_ucode_run;
 272         u32 error_event_table;
 273         u32 log_event_table;
 274
 275         u32 ampdu_ref;
 276
 277         struct iwl_notif_wait_data notif_wait;
 278
 279         unsigned long transport_queue_stop;
 280         u8 queue_to_mac80211[IWL_MAX_HW_QUEUES];
 281         atomic_t queue_stop_count[IWL_MAX_HW_QUEUES];
 282
 283         struct iwl_nvm_data *nvm_data;
 284         /* NVM sections */
 285         struct iwl_nvm_section nvm_sections[NVM_NUM_OF_SECTIONS];
 286
 287         /* EEPROM MAC addresses */
 288         struct mac_address addresses[IWL_MVM_MAX_ADDRESSES];
 289
 290         /* data related to data path */
 291         struct iwl_rx_phy_info last_phy_info;
 292         struct ieee80211_sta __rcu *fw_id_to_mac_id[IWL_MVM_STATION_COUNT];
 293         struct work_struct sta_drained_wk;
 294         unsigned long sta_drained[BITS_TO_LONGS(IWL_MVM_STATION_COUNT)];
 295
 296         /* configured by mac80211 */
 297         u32 rts_threshold;
 298
 299         /* Scan status, cmd (pre-allocated) and auxiliary station */
 300         enum iwl_scan_status scan_status;
 301         struct iwl_scan_cmd *scan_cmd;
 302
 303         /* Internal station */
 304         struct iwl_mvm_int_sta aux_sta;
 305
 306         u8 scan_last_antenna_idx; /* to toggle TX between antennas */
 307         u8 mgmt_last_antenna_idx;
 308
 309 #ifdef CONFIG_IWLWIFI_DEBUGFS
 310         struct dentry *debugfs_dir;
 311         u32 dbgfs_sram_offset, dbgfs_sram_len;
 312         bool prevent_power_down_d3;
 313 #endif
 314
 315         struct iwl_mvm_phy_ctxt phy_ctxt_roc;
 316
 317         struct list_head time_event_list;
 318         spinlock_t time_event_lock;
 319
 320         /*
 321          * A bitmap indicating the index of the key in use. The firmware
 322          * can hold 16 keys at most. Reflect this fact.
 323          */
 324         unsigned long fw_key_table[BITS_TO_LONGS(STA_KEY_MAX_NUM)];
 325
 326         /*
 327          * This counter of created interfaces is referenced only in conjunction
 328          * with FW limitation related to power management. Currently PM is
 329          * supported only on a single interface.
 330          * IMPORTANT: this variable counts all interfaces except P2P device.
 331          */
 332         u8 vif_count;
 333
 334         struct led_classdev led;
 335
 336         struct ieee80211_vif *p2p_device_vif;
 337
 338 #ifdef CONFIG_PM_SLEEP
 339         int gtk_ivlen, gtk_icvlen, ptk_ivlen, ptk_icvlen;
 340 #endif
 341
 342         /* BT-Coex */
 343         u8 bt_kill_msk;
 344         struct iwl_bt_coex_profile_notif last_bt_notif;
 345 };
 346
 347 /* Extract MVM priv from op_mode and _hw */
 348 #define IWL_OP_MODE_GET_MVM(_iwl_op_mode)               \
 349         ((struct iwl_mvm *)(_iwl_op_mode)->op_mode_specific)
 350
 351 #define IWL_MAC80211_GET_MVM(_hw)                       \
 352         IWL_OP_MODE_GET_MVM((struct iwl_op_mode *)((_hw)->priv))
 353
 354 extern const u8 iwl_mvm_ac_to_tx_fifo[];
 355
 356 struct iwl_rate_info {
 357         u8 plcp;        /* uCode API:  IWL_RATE_6M_PLCP, etc. */
 358         u8 plcp_siso;   /* uCode API:  IWL_RATE_SISO_6M_PLCP, etc. */
 359         u8 plcp_mimo2;  /* uCode API:  IWL_RATE_MIMO2_6M_PLCP, etc. */
 360         u8 plcp_mimo3;  /* uCode API:  IWL_RATE_MIMO3_6M_PLCP, etc. */
 361         u8 ieee;        /* MAC header:  IWL_RATE_6M_IEEE, etc. */
 362 };
 363
 364 /******************
 365  * MVM Methods
 366  ******************/
 367 /* uCode */
 368 int iwl_run_init_mvm_ucode(struct iwl_mvm *mvm, bool read_nvm);
 369
 370 /* Utils */
 371 int iwl_mvm_legacy_rate_to_mac80211_idx(u32 rate_n_flags,
 372                                         enum ieee80211_band band);
 373 u8 iwl_mvm_mac80211_idx_to_hwrate(int rate_idx);
 374 void iwl_mvm_dump_nic_error_log(struct iwl_mvm *mvm);
 375 u8 first_antenna(u8 mask);
 376 u8 iwl_mvm_next_antenna(struct iwl_mvm *mvm, u8 valid, u8 last_idx);
 377
 378 /* Tx / Host Commands */
 379 int __must_check iwl_mvm_send_cmd(struct iwl_mvm *mvm,
 380                                   struct iwl_host_cmd *cmd);
 381 int __must_check iwl_mvm_send_cmd_pdu(struct iwl_mvm *mvm, u8 id,
 382                                       u32 flags, u16 len, const void *data);
 383 int __must_check iwl_mvm_send_cmd_status(struct iwl_mvm *mvm,
 384                                          struct iwl_host_cmd *cmd,
 385                                          u32 *status);
 386 int __must_check iwl_mvm_send_cmd_pdu_status(struct iwl_mvm *mvm, u8 id,
 387                                              u16 len, const void *data,
 388                                              u32 *status);
 389 int iwl_mvm_tx_skb(struct iwl_mvm *mvm, struct sk_buff *skb,
 390                    struct ieee80211_sta *sta);
 391 int iwl_mvm_tx_skb_non_sta(struct iwl_mvm *mvm, struct sk_buff *skb);
 392 #ifdef CONFIG_IWLWIFI_DEBUG
 393 const char *iwl_mvm_get_tx_fail_reason(u32 status);
 394 #else
 395 static inline const char *iwl_mvm_get_tx_fail_reason(u32 status) { return ""; }
 396 #endif
 397 int iwl_mvm_flush_tx_path(struct iwl_mvm *mvm, u32 tfd_msk, bool sync);
 398 void iwl_mvm_async_handlers_purge(struct iwl_mvm *mvm);
 399
 400 /* Statistics */
 401 int iwl_mvm_rx_reply_statistics(struct iwl_mvm *mvm,
 402                                 struct iwl_rx_cmd_buffer *rxb,
 403                                 struct iwl_device_cmd *cmd);
 404 int iwl_mvm_rx_statistics(struct iwl_mvm *mvm,
 405                           struct iwl_rx_cmd_buffer *rxb,
 406                           struct iwl_device_cmd *cmd);
 407
 408 /* NVM */
 409 int iwl_nvm_init(struct iwl_mvm *mvm);
 410
 411 int iwl_mvm_up(struct iwl_mvm *mvm);
 412 int iwl_mvm_load_d3_fw(struct iwl_mvm *mvm);
 413
 414 int iwl_mvm_mac_setup_register(struct iwl_mvm *mvm);
 415
 416 /*
 417  * FW notifications / CMD responses handlers
 418  * Convention: iwl_mvm_rx_<NAME OF THE CMD>
 419  */
 420 int iwl_mvm_rx_rx_phy_cmd(struct iwl_mvm *mvm, struct iwl_rx_cmd_buffer *rxb,
 421                           struct iwl_device_cmd *cmd);
 422 int iwl_mvm_rx_rx_mpdu(struct iwl_mvm *mvm, struct iwl_rx_cmd_buffer *rxb,
 423                        struct iwl_device_cmd *cmd);
 424 int iwl_mvm_rx_tx_cmd(struct iwl_mvm *mvm, struct iwl_rx_cmd_buffer *rxb,
 425                       struct iwl_device_cmd *cmd);
 426 int iwl_mvm_rx_ba_notif(struct iwl_mvm *mvm, struct iwl_rx_cmd_buffer *rxb,
 427                         struct iwl_device_cmd *cmd);
 428 int iwl_mvm_rx_radio_ver(struct iwl_mvm *mvm, struct iwl_rx_cmd_buffer *rxb,
 429                          struct iwl_device_cmd *cmd);
 430 int iwl_mvm_rx_fw_error(struct iwl_mvm *mvm, struct iwl_rx_cmd_buffer *rxb,
 431                           struct iwl_device_cmd *cmd);
 432 int iwl_mvm_rx_card_state_notif(struct iwl_mvm *mvm,
 433                                 struct iwl_rx_cmd_buffer *rxb,
 434                                 struct iwl_device_cmd *cmd);
 435 int iwl_mvm_rx_radio_ver(struct iwl_mvm *mvm, struct iwl_rx_cmd_buffer *rxb,
 436                          struct iwl_device_cmd *cmd);
 437
 438 /* MVM PHY */
 439 int iwl_mvm_phy_ctxt_add(struct iwl_mvm *mvm, struct iwl_mvm_phy_ctxt *ctxt,
 440                          struct cfg80211_chan_def *chandef,
 441                          u8 chains_static, u8 chains_dynamic);
 442 int iwl_mvm_phy_ctxt_changed(struct iwl_mvm *mvm, struct iwl_mvm_phy_ctxt *ctxt,
 443                              struct cfg80211_chan_def *chandef,
 444                              u8 chains_static, u8 chains_dynamic);
 445 void iwl_mvm_phy_ctxt_remove(struct iwl_mvm *mvm,
 446                              struct iwl_mvm_phy_ctxt *ctxt);
 447
 448 /* MAC (virtual interface) programming */
 449 int iwl_mvm_mac_ctxt_init(struct iwl_mvm *mvm, struct ieee80211_vif *vif);
 450 void iwl_mvm_mac_ctxt_release(struct iwl_mvm *mvm, struct ieee80211_vif *vif);
 451 int iwl_mvm_mac_ctxt_add(struct iwl_mvm *mvm, struct ieee80211_vif *vif);
 452 int iwl_mvm_mac_ctxt_changed(struct iwl_mvm *mvm, struct ieee80211_vif *vif);
 453 int iwl_mvm_mac_ctxt_remove(struct iwl_mvm *mvm, struct ieee80211_vif *vif);
 454 u32 iwl_mvm_mac_get_queues_mask(struct iwl_mvm *mvm,
 455                                 struct ieee80211_vif *vif);
 456 int iwl_mvm_mac_ctxt_beacon_changed(struct iwl_mvm *mvm,
 457                                     struct ieee80211_vif *vif);
 458 int iwl_mvm_rx_beacon_notif(struct iwl_mvm *mvm,
 459                             struct iwl_rx_cmd_buffer *rxb,
 460                             struct iwl_device_cmd *cmd);
 461
 462 /* Bindings */
 463 int iwl_mvm_binding_add_vif(struct iwl_mvm *mvm, struct ieee80211_vif *vif);
 464 int iwl_mvm_binding_remove_vif(struct iwl_mvm *mvm, struct ieee80211_vif *vif);
 465
 466 /* Quota management */
 467 int iwl_mvm_update_quotas(struct iwl_mvm *mvm, struct ieee80211_vif *newvif);
 468
 469 /* Scanning */
 470 int iwl_mvm_scan_request(struct iwl_mvm *mvm,
 471                          struct ieee80211_vif *vif,
 472                          struct cfg80211_scan_request *req);
 473 int iwl_mvm_rx_scan_response(struct iwl_mvm *mvm, struct iwl_rx_cmd_buffer *rxb,
 474                              struct iwl_device_cmd *cmd);
 475 int iwl_mvm_rx_scan_complete(struct iwl_mvm *mvm, struct iwl_rx_cmd_buffer *rxb,
 476                              struct iwl_device_cmd *cmd);
 477 void iwl_mvm_cancel_scan(struct iwl_mvm *mvm);
 478
 479 /* MVM debugfs */
 480 #ifdef CONFIG_IWLWIFI_DEBUGFS
 481 int iwl_mvm_dbgfs_register(struct iwl_mvm *mvm, struct dentry *dbgfs_dir);
 482 void iwl_mvm_vif_dbgfs_register(struct iwl_mvm *mvm, struct ieee80211_vif *vif);
 483 void iwl_mvm_vif_dbgfs_clean(struct iwl_mvm *mvm, struct ieee80211_vif *vif);
 484 #else
 485 static inline int iwl_mvm_dbgfs_register(struct iwl_mvm *mvm,
 486                                          struct dentry *dbgfs_dir)
 487 {
 488         return 0;
 489 }
 490 static inline void
 491 iwl_mvm_vif_dbgfs_register(struct iwl_mvm *mvm, struct ieee80211_vif *vif)
 492 {
 493 }
 494 static inline void
 495 iwl_mvm_vif_dbgfs_clean(struct iwl_mvm *mvm, struct ieee80211_vif *vif)
 496 {
 497 }
 498 #endif /* CONFIG_IWLWIFI_DEBUGFS */
 499
 500 /* rate scaling */
 501 int iwl_mvm_send_lq_cmd(struct iwl_mvm *mvm, struct iwl_lq_cmd *lq,
 502                         u8 flags, bool init);
 503
 504 /* power managment */
 505 int iwl_mvm_power_update_mode(struct iwl_mvm *mvm, struct ieee80211_vif *vif);
 506 int iwl_mvm_power_disable(struct iwl_mvm *mvm, struct ieee80211_vif *vif);
 507 void iwl_mvm_power_build_cmd(struct iwl_mvm *mvm, struct ieee80211_vif *vif,
 508                              struct iwl_powertable_cmd *cmd);
 509
 510 int iwl_mvm_leds_init(struct iwl_mvm *mvm);
 511 void iwl_mvm_leds_exit(struct iwl_mvm *mvm);
 512
 513 /* D3 (WoWLAN, NetDetect) */
 514 int iwl_mvm_suspend(struct ieee80211_hw *hw, struct cfg80211_wowlan *wowlan);
 515 int iwl_mvm_resume(struct ieee80211_hw *hw);
 516 void iwl_mvm_set_wakeup(struct ieee80211_hw *hw, bool enabled);
 517 void iwl_mvm_set_rekey_data(struct ieee80211_hw *hw,
 518                             struct ieee80211_vif *vif,
 519                             struct cfg80211_gtk_rekey_data *data);
 520 void iwl_mvm_ipv6_addr_change(struct ieee80211_hw *hw,
 521                               struct ieee80211_vif *vif,
 522                               struct inet6_dev *idev);
 523 void iwl_mvm_set_default_unicast_key(struct ieee80211_hw *hw,
 524                                      struct ieee80211_vif *vif, int idx);
 525
 526 /* BT Coex */
 527 int iwl_send_bt_prio_tbl(struct iwl_mvm *mvm);
 528 int iwl_send_bt_init_conf(struct iwl_mvm *mvm);
 529 int iwl_mvm_rx_bt_coex_notif(struct iwl_mvm *mvm,
 530                              struct iwl_rx_cmd_buffer *rxb,
 531                              struct iwl_device_cmd *cmd);
 532 void iwl_mvm_bt_rssi_event(struct iwl_mvm *mvm, struct ieee80211_vif *vif,
 533                            enum ieee80211_rssi_event rssi_event);
 534 void iwl_mvm_bt_coex_vif_assoc(struct iwl_mvm *mvm, struct ieee80211_vif *vif);
 535
 536 #endif /* __IWL_MVM_H__ */