drivers/net/wireless/iwlwifi/iwl-shared.h

   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) 2007 - 2012 Intel Corporation. All rights reserved.
   9  *
  10  * This program is free software; you can redistribute it and/or modify
  11  * it under the terms of version 2 of the GNU General Public License as
  12  * published by the Free Software Foundation.
  13  *
  14  * This program is distributed in the hope that it will be useful, but
  15  * WITHOUT ANY WARRANTY; without even the implied warranty of
  16  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  17  * General Public License for more details.
  18  *
  19  * You should have received a copy of the GNU General Public License
  20  * along with this program; if not, write to the Free Software
  21  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110,
  22  * USA
  23  *
  24  * The full GNU General Public License is included in this distribution
  25  * in the file called LICENSE.GPL.
  26  *
  27  * Contact Information:
  28  *  Intel Linux Wireless <ilw@linux.intel.com>
  29  * Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497
  30  *
  31  * BSD LICENSE
  32  *
  33  * Copyright(c) 2005 - 2012 Intel Corporation. All rights reserved.
  34  * All rights reserved.
  35  *
  36  * Redistribution and use in source and binary forms, with or without
  37  * modification, are permitted provided that the following conditions
  38  * are met:
  39  *
  40  *  * Redistributions of source code must retain the above copyright
  41  *    notice, this list of conditions and the following disclaimer.
  42  *  * Redistributions in binary form must reproduce the above copyright
  43  *    notice, this list of conditions and the following disclaimer in
  44  *    the documentation and/or other materials provided with the
  45  *    distribution.
  46  *  * Neither the name Intel Corporation nor the names of its
  47  *    contributors may be used to endorse or promote products derived
  48  *    from this software without specific prior written permission.
  49  *
  50  * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
  51  * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
  52  * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
  53  * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
  54  * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
  55  * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
  56  * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
  57  * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
  58  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
  59  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
  60  * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  61  *
  62  *****************************************************************************/
  63 #ifndef __iwl_shared_h__
  64 #define __iwl_shared_h__
  65
  66 #include <linux/types.h>
  67 #include <linux/spinlock.h>
  68 #include <linux/gfp.h>
  69 #include <net/mac80211.h>
  70
  71 #include "iwl-commands.h"
  72 #include "iwl-fw.h"
  73
  74 /**
  75  * DOC: shared area - role and goal
  76  *
  77  * The shared area contains all the data exported by the upper layer to the
  78  * other layers. Since the bus and transport layer shouldn't dereference
  79  * iwl_priv, all the data needed by the upper layer and the transport / bus
  80  * layer must be here.
  81  * The shared area also holds pointer to all the other layers. This allows a
  82  * layer to call a function from another layer.
  83  *
  84  * NOTE: All the layers hold a pointer to the shared area which must be shrd.
  85  *      A few macros assume that (_m)->shrd points to the shared area no matter
  86  *      what _m is.
  87  *
  88  * gets notifications about enumeration, suspend, resume.
  89  * For the moment, the bus layer is not a linux kernel module as itself, and
  90  * the module_init function of the driver must call the bus specific
  91  * registration functions. These functions are listed at the end of this file.
  92  * For the moment, there is only one implementation of this interface: PCI-e.
  93  * This implementation is iwl-pci.c
  94  */
  95
  96 struct iwl_priv;
  97 struct iwl_trans;
  98 struct iwl_sensitivity_ranges;
  99 struct iwl_trans_ops;
 100
 101 #define DRV_NAME        "iwlwifi"
 102 #define IWLWIFI_VERSION "in-tree:"
 103 #define DRV_COPYRIGHT   "Copyright(c) 2003-2012 Intel Corporation"
 104 #define DRV_AUTHOR     "<ilw@linux.intel.com>"
 105
 106 extern struct iwl_mod_params iwlagn_mod_params;
 107
 108 #define IWL_DISABLE_HT_ALL      BIT(0)
 109 #define IWL_DISABLE_HT_TXAGG    BIT(1)
 110 #define IWL_DISABLE_HT_RXAGG    BIT(2)
 111
 112 /**
 113  * struct iwl_mod_params
 114  *
 115  * Holds the module parameters
 116  *
 117  * @sw_crypto: using hardware encryption, default = 0
 118  * @disable_11n: disable 11n capabilities, default = 0,
 119  *      use IWL_DISABLE_HT_* constants
 120  * @amsdu_size_8K: enable 8K amsdu size, default = 1
 121  * @antenna: both antennas (use diversity), default = 0
 122  * @restart_fw: restart firmware, default = 1
 123  * @plcp_check: enable plcp health check, default = true
 124  * @ack_check: disable ack health check, default = false
 125  * @wd_disable: enable stuck queue check, default = 0
 126  * @bt_coex_active: enable bt coex, default = true
 127  * @led_mode: system default, default = 0
 128  * @no_sleep_autoadjust: disable autoadjust, default = true
 129  * @power_save: disable power save, default = false
 130  * @power_level: power level, default = 1
 131  * @debug_level: levels are IWL_DL_*
 132  * @ant_coupling: antenna coupling in dB, default = 0
 133  * @bt_ch_announce: BT channel inhibition, default = enable
 134  * @wanted_ucode_alternative: ucode alternative to use, default = 1
 135  * @auto_agg: enable agg. without check, default = true
 136  */
 137 struct iwl_mod_params {
 138         int sw_crypto;
 139         unsigned int disable_11n;
 140         int amsdu_size_8K;
 141         int antenna;
 142         int restart_fw;
 143         bool plcp_check;
 144         bool ack_check;
 145         int  wd_disable;
 146         bool bt_coex_active;
 147         int led_mode;
 148         bool no_sleep_autoadjust;
 149         bool power_save;
 150         int power_level;
 151         u32 debug_level;
 152         int ant_coupling;
 153         bool bt_ch_announce;
 154         int wanted_ucode_alternative;
 155         bool auto_agg;
 156 };
 157
 158 /**
 159  * struct iwl_hw_params
 160  *
 161  * Holds the module parameters
 162  *
 163  * @max_txq_num: Max # Tx queues supported
 164  * @num_ampdu_queues: num of ampdu queues
 165  * @tx_chains_num: Number of TX chains
 166  * @rx_chains_num: Number of RX chains
 167  * @valid_tx_ant: usable antennas for TX
 168  * @valid_rx_ant: usable antennas for RX
 169  * @ht40_channel: is 40MHz width possible: BIT(IEEE80211_BAND_XXX)
 170  * @sku: sku read from EEPROM
 171  * @rx_page_order: Rx buffer page order
 172  * @ct_kill_threshold: temperature threshold - in hw dependent unit
 173  * @ct_kill_exit_threshold: when to reeable the device - in hw dependent unit
 174  *      relevant for 1000, 6000 and up
 175  * @wd_timeout: TX queues watchdog timeout
 176  * @struct iwl_sensitivity_ranges: range of sensitivity values
 177  */
 178 struct iwl_hw_params {
 179         u8  max_txq_num;
 180         u8  num_ampdu_queues;
 181         u8  tx_chains_num;
 182         u8  rx_chains_num;
 183         u8  valid_tx_ant;
 184         u8  valid_rx_ant;
 185         u8  ht40_channel;
 186         u16 sku;
 187         u32 rx_page_order;
 188         u32 ct_kill_threshold;
 189         u32 ct_kill_exit_threshold;
 190         unsigned int wd_timeout;
 191
 192         const struct iwl_sensitivity_ranges *sens;
 193 };
 194
 195 /**
 196  * enum iwl_ucode_type
 197  *
 198  * The type of ucode currently loaded on the hardware.
 199  *
 200  * @IWL_UCODE_NONE: No ucode loaded
 201  * @IWL_UCODE_REGULAR: Normal runtime ucode
 202  * @IWL_UCODE_INIT: Initial ucode
 203  * @IWL_UCODE_WOWLAN: Wake on Wireless enabled ucode
 204  */
 205 enum iwl_ucode_type {
 206         IWL_UCODE_NONE,
 207         IWL_UCODE_REGULAR,
 208         IWL_UCODE_INIT,
 209         IWL_UCODE_WOWLAN,
 210 };
 211
 212 /**
 213  * struct iwl_notification_wait - notification wait entry
 214  * @list: list head for global list
 215  * @fn: function called with the notification
 216  * @cmd: command ID
 217  *
 218  * This structure is not used directly, to wait for a
 219  * notification declare it on the stack, and call
 220  * iwlagn_init_notification_wait() with appropriate
 221  * parameters. Then do whatever will cause the ucode
 222  * to notify the driver, and to wait for that then
 223  * call iwlagn_wait_notification().
 224  *
 225  * Each notification is one-shot. If at some point we
 226  * need to support multi-shot notifications (which
 227  * can't be allocated on the stack) we need to modify
 228  * the code for them.
 229  */
 230 struct iwl_notification_wait {
 231         struct list_head list;
 232
 233         void (*fn)(struct iwl_priv *priv, struct iwl_rx_packet *pkt,
 234                    void *data);
 235         void *fn_data;
 236
 237         u8 cmd;
 238         bool triggered, aborted;
 239 };
 240
 241 /**
 242  * enum iwl_pa_type - Power Amplifier type
 243  * @IWL_PA_SYSTEM:  based on uCode configuration
 244  * @IWL_PA_INTERNAL: use Internal only
 245  */
 246 enum iwl_pa_type {
 247         IWL_PA_SYSTEM = 0,
 248         IWL_PA_INTERNAL = 1,
 249 };
 250
 251 /*
 252  * LED mode
 253  *    IWL_LED_DEFAULT:  use device default
 254  *    IWL_LED_RF_STATE: turn LED on/off based on RF state
 255  *                      LED ON  = RF ON
 256  *                      LED OFF = RF OFF
 257  *    IWL_LED_BLINK:    adjust led blink rate based on blink table
 258  *    IWL_LED_DISABLE:  led disabled
 259  */
 260 enum iwl_led_mode {
 261         IWL_LED_DEFAULT,
 262         IWL_LED_RF_STATE,
 263         IWL_LED_BLINK,
 264         IWL_LED_DISABLE,
 265 };
 266
 267 /*
 268  * @max_ll_items: max number of OTP blocks
 269  * @shadow_ram_support: shadow support for OTP memory
 270  * @led_compensation: compensate on the led on/off time per HW according
 271  *      to the deviation to achieve the desired led frequency.
 272  *      The detail algorithm is described in iwl-led.c
 273  * @chain_noise_num_beacons: number of beacons used to compute chain noise
 274  * @adv_thermal_throttle: support advance thermal throttle
 275  * @support_ct_kill_exit: support ct kill exit condition
 276  * @support_wimax_coexist: support wimax/wifi co-exist
 277  * @plcp_delta_threshold: plcp error rate threshold used to trigger
 278  *      radio tuning when there is a high receiving plcp error rate
 279  * @chain_noise_scale: default chain noise scale used for gain computation
 280  * @wd_timeout: TX queues watchdog timeout
 281  * @max_event_log_size: size of event log buffer size for ucode event logging
 282  * @shadow_reg_enable: HW shadhow register bit
 283  * @hd_v2: v2 of enhanced sensitivity value, used for 2000 series and up
 284  * @no_idle_support: do not support idle mode
 285  * wd_disable: disable watchdog timer
 286  */
 287 struct iwl_base_params {
 288         int eeprom_size;
 289         int num_of_queues;      /* def: HW dependent */
 290         int num_of_ampdu_queues;/* def: HW dependent */
 291         /* for iwl_apm_init() */
 292         u32 pll_cfg_val;
 293
 294         const u16 max_ll_items;
 295         const bool shadow_ram_support;
 296         u16 led_compensation;
 297         bool adv_thermal_throttle;
 298         bool support_ct_kill_exit;
 299         const bool support_wimax_coexist;
 300         u8 plcp_delta_threshold;
 301         s32 chain_noise_scale;
 302         unsigned int wd_timeout;
 303         u32 max_event_log_size;
 304         const bool shadow_reg_enable;
 305         const bool hd_v2;
 306         const bool no_idle_support;
 307         const bool wd_disable;
 308 };
 309
 310 /**
 311  * struct iwl_cfg
 312  * @name: Offical name of the device
 313  * @fw_name_pre: Firmware filename prefix. The api version and extension
 314  *      (.ucode) will be added to filename before loading from disk. The
 315  *      filename is constructed as fw_name_pre<api>.ucode.
 316  * @ucode_api_max: Highest version of uCode API supported by driver.
 317  * @ucode_api_ok: oldest version of the uCode API that is OK to load
 318  *      without a warning, for use in transitions
 319  * @ucode_api_min: Lowest version of uCode API supported by driver.
 320  * @max_inst_size: The maximal length of the fw inst section
 321  * @max_data_size: The maximal length of the fw data section
 322  * @valid_tx_ant: valid transmit antenna
 323  * @valid_rx_ant: valid receive antenna
 324  * @eeprom_ver: EEPROM version
 325  * @eeprom_calib_ver: EEPROM calibration version
 326  * @lib: pointer to the lib ops
 327  * @additional_nic_config: additional nic configuration
 328  * @base_params: pointer to basic parameters
 329  * @ht_params: point to ht patameters
 330  * @bt_params: pointer to bt parameters
 331  * @pa_type: used by 6000 series only to identify the type of Power Amplifier
 332  * @need_temp_offset_calib: need to perform temperature offset calibration
 333  * @no_xtal_calib: some devices do not need crystal calibration data,
 334  *      don't send it to those
 335  * @scan_rx_antennas: available antenna for scan operation
 336  * @led_mode: 0=blinking, 1=On(RF On)/Off(RF Off)
 337  * @adv_pm: advance power management
 338  * @rx_with_siso_diversity: 1x1 device with rx antenna diversity
 339  * @internal_wimax_coex: internal wifi/wimax combo device
 340  * @iq_invert: I/Q inversion
 341  * @temp_offset_v2: support v2 of temperature offset calibration
 342  *
 343  * We enable the driver to be backward compatible wrt API version. The
 344  * driver specifies which APIs it supports (with @ucode_api_max being the
 345  * highest and @ucode_api_min the lowest). Firmware will only be loaded if
 346  * it has a supported API version.
 347  *
 348  * The ideal usage of this infrastructure is to treat a new ucode API
 349  * release as a new hardware revision.
 350  */
 351 struct iwl_cfg {
 352         /* params specific to an individual device within a device family */
 353         const char *name;
 354         const char *fw_name_pre;
 355         const unsigned int ucode_api_max;
 356         const unsigned int ucode_api_ok;
 357         const unsigned int ucode_api_min;
 358         const u32 max_data_size;
 359         const u32 max_inst_size;
 360         u8   valid_tx_ant;
 361         u8   valid_rx_ant;
 362         u16  eeprom_ver;
 363         u16  eeprom_calib_ver;
 364         const struct iwl_lib_ops *lib;
 365         void (*additional_nic_config)(struct iwl_priv *priv);
 366         /* params not likely to change within a device family */
 367         struct iwl_base_params *base_params;
 368         /* params likely to change within a device family */
 369         struct iwl_ht_params *ht_params;
 370         struct iwl_bt_params *bt_params;
 371         enum iwl_pa_type pa_type;         /* if used set to IWL_PA_SYSTEM */
 372         const bool need_temp_offset_calib; /* if used set to true */
 373         const bool no_xtal_calib;
 374         u8 scan_rx_antennas[IEEE80211_NUM_BANDS];
 375         enum iwl_led_mode led_mode;
 376         const bool adv_pm;
 377         const bool rx_with_siso_diversity;
 378         const bool internal_wimax_coex;
 379         const bool iq_invert;
 380         const bool temp_offset_v2;
 381 };
 382
 383 /**
 384  * struct iwl_shared - shared fields for all the layers of the driver
 385  *
 386  * @ucode_owner: IWL_OWNERSHIP_*
 387  * @cmd_queue: command queue number
 388  * @status: STATUS_*
 389  * @wowlan: are we running wowlan uCode
 390  * @valid_contexts: microcode/device supports multiple contexts
 391  * @bus: pointer to the bus layer data
 392  * @cfg: see struct iwl_cfg
 393  * @priv: pointer to the upper layer data
 394  * @trans: pointer to the transport layer data
 395  * @nic: pointer to the nic data
 396  * @hw_params: see struct iwl_hw_params
 397  * @lock: protect general shared data
 398  * @wait_command_queue: the wait_queue for SYNC host command nad uCode load
 399  * @eeprom: pointer to the eeprom/OTP image
 400  * @ucode_type: indicator of loaded ucode image
 401  * @notif_waits: things waiting for notification
 402  * @notif_wait_lock: lock protecting notification
 403  * @notif_waitq: head of notification wait queue
 404  * @device_pointers: pointers to ucode event tables
 405  */
 406 struct iwl_shared {
 407 #define IWL_OWNERSHIP_DRIVER    0
 408 #define IWL_OWNERSHIP_TM        1
 409         u8 ucode_owner;
 410         u8 cmd_queue;
 411         unsigned long status;
 412         u8 valid_contexts;
 413
 414         const struct iwl_cfg *cfg;
 415         struct iwl_priv *priv;
 416         struct iwl_trans *trans;
 417         void *drv;
 418         struct iwl_hw_params hw_params;
 419         const struct iwl_fw *fw;
 420
 421         wait_queue_head_t wait_command_queue;
 422
 423         /* eeprom -- this is in the card's little endian byte order */
 424         u8 *eeprom;
 425
 426         /* ucode related variables */
 427         enum iwl_ucode_type ucode_type;
 428
 429         /* notification wait support */
 430         struct list_head notif_waits;
 431         spinlock_t notif_wait_lock;
 432         wait_queue_head_t notif_waitq;
 433
 434         struct {
 435                 u32 error_event_table;
 436                 u32 log_event_table;
 437         } device_pointers;
 438
 439 };
 440
 441 /*Whatever _m is (iwl_trans, iwl_priv, these macros will work */
 442 #define priv(_m)        ((_m)->shrd->priv)
 443 #define cfg(_m)         ((_m)->shrd->cfg)
 444 #define trans(_m)       ((_m)->shrd->trans)
 445 #define hw_params(_m)   ((_m)->shrd->hw_params)
 446
 447 static inline bool iwl_have_debug_level(u32 level)
 448 {
 449         return iwlagn_mod_params.debug_level & level;
 450 }
 451
 452 enum iwl_rxon_context_id {
 453         IWL_RXON_CTX_BSS,
 454         IWL_RXON_CTX_PAN,
 455
 456         NUM_IWL_RXON_CTX
 457 };
 458
 459 int iwlagn_hw_valid_rtc_data_addr(u32 addr);
 460 void iwl_nic_config(struct iwl_priv *priv);
 461 const char *get_cmd_string(u8 cmd);
 462
 463 /* notification wait support */
 464 void iwl_abort_notification_waits(struct iwl_shared *shrd);
 465 void __acquires(wait_entry)
 466 iwl_init_notification_wait(struct iwl_shared *shrd,
 467                            struct iwl_notification_wait *wait_entry,
 468                            u8 cmd,
 469                            void (*fn)(struct iwl_priv *priv,
 470                                       struct iwl_rx_packet *pkt,
 471                                       void *data),
 472                            void *fn_data);
 473 int __must_check __releases(wait_entry)
 474 iwl_wait_notification(struct iwl_shared *shrd,
 475                          struct iwl_notification_wait *wait_entry,
 476                          unsigned long timeout);
 477 void __releases(wait_entry)
 478 iwl_remove_notification(struct iwl_shared *shrd,
 479                            struct iwl_notification_wait *wait_entry);
 480
 481 #define IWL_CMD(x) case x: return #x
 482
 483 /*****************************************************
 484 * DRIVER STATUS FUNCTIONS
 485 ******************************************************/
 486 #define STATUS_HCMD_ACTIVE      0       /* host command in progress */
 487 /* 1 is unused (used to be STATUS_HCMD_SYNC_ACTIVE) */
 488 #define STATUS_INT_ENABLED      2
 489 #define STATUS_RF_KILL_HW       3
 490 #define STATUS_CT_KILL          4
 491 #define STATUS_INIT             5
 492 #define STATUS_ALIVE            6
 493 #define STATUS_READY            7
 494 #define STATUS_TEMPERATURE      8
 495 #define STATUS_GEO_CONFIGURED   9
 496 #define STATUS_EXIT_PENDING     10
 497 #define STATUS_STATISTICS       12
 498 #define STATUS_SCANNING         13
 499 #define STATUS_SCAN_ABORTING    14
 500 #define STATUS_SCAN_HW          15
 501 #define STATUS_POWER_PMI        16
 502 #define STATUS_FW_ERROR         17
 503 #define STATUS_DEVICE_ENABLED   18
 504 #define STATUS_CHANNEL_SWITCH_PENDING 19
 505 #define STATUS_SCAN_COMPLETE    20
 506
 507 #endif /* #__iwl_shared_h__ */