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

   1 /******************************************************************************
   2  *
   3  * Copyright(c) 2003 - 2011 Intel Corporation. All rights reserved.
   4  *
   5  * This program is free software; you can redistribute it and/or modify it
   6  * under the terms of version 2 of the GNU General Public License as
   7  * published by the Free Software Foundation.
   8  *
   9  * This program is distributed in the hope that it will be useful, but WITHOUT
  10  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
  11  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for
  12  * more details.
  13  *
  14  * You should have received a copy of the GNU General Public License along with
  15  * this program; if not, write to the Free Software Foundation, Inc.,
  16  * 51 Franklin Street, Fifth Floor, Boston, MA 02110, USA
  17  *
  18  * The full GNU General Public License is included in this distribution in the
  19  * file called LICENSE.
  20  *
  21  * Contact Information:
  22  *  Intel Linux Wireless <ilw@linux.intel.com>
  23  * Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497
  24  *
  25  *****************************************************************************/
  26 /*
  27  * Please use this file (iwl-dev.h) for driver implementation definitions.
  28  * Please use iwl-commands.h for uCode API definitions.
  29  */
  30
  31 #ifndef __iwl_dev_h__
  32 #define __iwl_dev_h__
  33
  34 #include <linux/pci.h> /* for struct pci_device_id */
  35 #include <linux/kernel.h>
  36 #include <linux/wait.h>
  37 #include <linux/leds.h>
  38 #include <net/ieee80211_radiotap.h>
  39
  40 #include "iwl-eeprom.h"
  41 #include "iwl-csr.h"
  42 #include "iwl-prph.h"
  43 #include "iwl-fh.h"
  44 #include "iwl-debug.h"
  45 #include "iwl-agn-hw.h"
  46 #include "iwl-led.h"
  47 #include "iwl-power.h"
  48 #include "iwl-agn-rs.h"
  49 #include "iwl-agn-tt.h"
  50
  51 #define U32_PAD(n)              ((4-(n))&0x3)
  52
  53 struct iwl_tx_queue;
  54
  55 /* CT-KILL constants */
  56 #define CT_KILL_THRESHOLD_LEGACY   110 /* in Celsius */
  57 #define CT_KILL_THRESHOLD          114 /* in Celsius */
  58 #define CT_KILL_EXIT_THRESHOLD     95  /* in Celsius */
  59
  60 /* Default noise level to report when noise measurement is not available.
  61  *   This may be because we're:
  62  *   1)  Not associated (4965, no beacon statistics being sent to driver)
  63  *   2)  Scanning (noise measurement does not apply to associated channel)
  64  *   3)  Receiving CCK (3945 delivers noise info only for OFDM frames)
  65  * Use default noise value of -127 ... this is below the range of measurable
  66  *   Rx dBm for either 3945 or 4965, so it can indicate "unmeasurable" to user.
  67  *   Also, -127 works better than 0 when averaging frames with/without
  68  *   noise info (e.g. averaging might be done in app); measured dBm values are
  69  *   always negative ... using a negative value as the default keeps all
  70  *   averages within an s8's (used in some apps) range of negative values. */
  71 #define IWL_NOISE_MEAS_NOT_AVAILABLE (-127)
  72
  73 /*
  74  * RTS threshold here is total size [2347] minus 4 FCS bytes
  75  * Per spec:
  76  *   a value of 0 means RTS on all data/management packets
  77  *   a value > max MSDU size means no RTS
  78  * else RTS for data/management frames where MPDU is larger
  79  *   than RTS value.
  80  */
  81 #define DEFAULT_RTS_THRESHOLD     2347U
  82 #define MIN_RTS_THRESHOLD         0U
  83 #define MAX_RTS_THRESHOLD         2347U
  84 #define MAX_MSDU_SIZE             2304U
  85 #define MAX_MPDU_SIZE             2346U
  86 #define DEFAULT_BEACON_INTERVAL   100U
  87 #define DEFAULT_SHORT_RETRY_LIMIT 7U
  88 #define DEFAULT_LONG_RETRY_LIMIT  4U
  89
  90 struct iwl_rx_mem_buffer {
  91         dma_addr_t page_dma;
  92         struct page *page;
  93         struct list_head list;
  94 };
  95
  96 #define rxb_addr(r) page_address(r->page)
  97
  98 /* defined below */
  99 struct iwl_device_cmd;
 100
 101 struct iwl_cmd_meta {
 102         /* only for SYNC commands, iff the reply skb is wanted */
 103         struct iwl_host_cmd *source;
 104         /*
 105          * only for ASYNC commands
 106          * (which is somewhat stupid -- look at iwl-sta.c for instance
 107          * which duplicates a bunch of code because the callback isn't
 108          * invoked for SYNC commands, if it were and its result passed
 109          * through it would be simpler...)
 110          */
 111         void (*callback)(struct iwl_priv *priv,
 112                          struct iwl_device_cmd *cmd,
 113                          struct iwl_rx_packet *pkt);
 114
 115         /* The CMD_SIZE_HUGE flag bit indicates that the command
 116          * structure is stored at the end of the shared queue memory. */
 117         u32 flags;
 118
 119         DEFINE_DMA_UNMAP_ADDR(mapping);
 120         DEFINE_DMA_UNMAP_LEN(len);
 121 };
 122
 123 /*
 124  * Generic queue structure
 125  *
 126  * Contains common data for Rx and Tx queues
 127  */
 128 struct iwl_queue {
 129         int n_bd;              /* number of BDs in this queue */
 130         int write_ptr;       /* 1-st empty entry (index) host_w*/
 131         int read_ptr;         /* last used entry (index) host_r*/
 132         /* use for monitoring and recovering the stuck queue */
 133         dma_addr_t dma_addr;   /* physical addr for BD's */
 134         int n_window;          /* safe queue window */
 135         u32 id;
 136         int low_mark;          /* low watermark, resume queue if free
 137                                 * space more than this */
 138         int high_mark;         /* high watermark, stop queue if free
 139                                 * space less than this */
 140 };
 141
 142 /* One for each TFD */
 143 struct iwl_tx_info {
 144         struct sk_buff *skb;
 145         struct iwl_rxon_context *ctx;
 146 };
 147
 148 /**
 149  * struct iwl_tx_queue - Tx Queue for DMA
 150  * @q: generic Rx/Tx queue descriptor
 151  * @bd: base of circular buffer of TFDs
 152  * @cmd: array of command/TX buffer pointers
 153  * @meta: array of meta data for each command/tx buffer
 154  * @dma_addr_cmd: physical address of cmd/tx buffer array
 155  * @txb: array of per-TFD driver data
 156  * @time_stamp: time (in jiffies) of last read_ptr change
 157  * @need_update: indicates need to update read/write index
 158  * @sched_retry: indicates queue is high-throughput aggregation (HT AGG) enabled
 159  *
 160  * A Tx queue consists of circular buffer of BDs (a.k.a. TFDs, transmit frame
 161  * descriptors) and required locking structures.
 162  */
 163 #define TFD_TX_CMD_SLOTS 256
 164 #define TFD_CMD_SLOTS 32
 165
 166 struct iwl_tx_queue {
 167         struct iwl_queue q;
 168         void *tfds;
 169         struct iwl_device_cmd **cmd;
 170         struct iwl_cmd_meta *meta;
 171         struct iwl_tx_info *txb;
 172         unsigned long time_stamp;
 173         u8 need_update;
 174         u8 sched_retry;
 175         u8 active;
 176         u8 swq_id;
 177 };
 178
 179 #define IWL_NUM_SCAN_RATES         (2)
 180
 181 /*
 182  * One for each channel, holds all channel setup data
 183  * Some of the fields (e.g. eeprom and flags/max_power_avg) are redundant
 184  *     with one another!
 185  */
 186 struct iwl_channel_info {
 187         struct iwl_eeprom_channel eeprom;       /* EEPROM regulatory limit */
 188         struct iwl_eeprom_channel ht40_eeprom;  /* EEPROM regulatory limit for
 189                                                  * HT40 channel */
 190
 191         u8 channel;       /* channel number */
 192         u8 flags;         /* flags copied from EEPROM */
 193         s8 max_power_avg; /* (dBm) regul. eeprom, normal Tx, any rate */
 194         s8 curr_txpow;    /* (dBm) regulatory/spectrum/user (not h/w) limit */
 195         s8 min_power;     /* always 0 */
 196         s8 scan_power;    /* (dBm) regul. eeprom, direct scans, any rate */
 197
 198         u8 group_index;   /* 0-4, maps channel to group1/2/3/4/5 */
 199         u8 band_index;    /* 0-4, maps channel to band1/2/3/4/5 */
 200         enum ieee80211_band band;
 201
 202         /* HT40 channel info */
 203         s8 ht40_max_power_avg;  /* (dBm) regul. eeprom, normal Tx, any rate */
 204         u8 ht40_flags;          /* flags copied from EEPROM */
 205         u8 ht40_extension_channel; /* HT_IE_EXT_CHANNEL_* */
 206 };
 207
 208 #define IWL_TX_FIFO_BK          0       /* shared */
 209 #define IWL_TX_FIFO_BE          1
 210 #define IWL_TX_FIFO_VI          2       /* shared */
 211 #define IWL_TX_FIFO_VO          3
 212 #define IWL_TX_FIFO_BK_IPAN     IWL_TX_FIFO_BK
 213 #define IWL_TX_FIFO_BE_IPAN     4
 214 #define IWL_TX_FIFO_VI_IPAN     IWL_TX_FIFO_VI
 215 #define IWL_TX_FIFO_VO_IPAN     5
 216 #define IWL_TX_FIFO_UNUSED      -1
 217
 218 /* Minimum number of queues. MAX_NUM is defined in hw specific files.
 219  * Set the minimum to accommodate the 4 standard TX queues, 1 command
 220  * queue, 2 (unused) HCCA queues, and 4 HT queues (one for each AC) */
 221 #define IWL_MIN_NUM_QUEUES      10
 222
 223 /*
 224  * Command queue depends on iPAN support.
 225  */
 226 #define IWL_DEFAULT_CMD_QUEUE_NUM       4
 227 #define IWL_IPAN_CMD_QUEUE_NUM          9
 228
 229 /*
 230  * This queue number is required for proper operation
 231  * because the ucode will stop/start the scheduler as
 232  * required.
 233  */
 234 #define IWL_IPAN_MCAST_QUEUE            8
 235
 236 #define IEEE80211_DATA_LEN              2304
 237 #define IEEE80211_4ADDR_LEN             30
 238 #define IEEE80211_HLEN                  (IEEE80211_4ADDR_LEN)
 239 #define IEEE80211_FRAME_LEN             (IEEE80211_DATA_LEN + IEEE80211_HLEN)
 240
 241 struct iwl_frame {
 242         union {
 243                 struct ieee80211_hdr frame;
 244                 struct iwl_tx_beacon_cmd beacon;
 245                 u8 raw[IEEE80211_FRAME_LEN];
 246                 u8 cmd[360];
 247         } u;
 248         struct list_head list;
 249 };
 250
 251 #define SEQ_TO_SN(seq) (((seq) & IEEE80211_SCTL_SEQ) >> 4)
 252 #define SN_TO_SEQ(ssn) (((ssn) << 4) & IEEE80211_SCTL_SEQ)
 253 #define MAX_SN ((IEEE80211_SCTL_SEQ) >> 4)
 254
 255 enum {
 256         CMD_SYNC = 0,
 257         CMD_SIZE_NORMAL = 0,
 258         CMD_NO_SKB = 0,
 259         CMD_SIZE_HUGE = (1 << 0),
 260         CMD_ASYNC = (1 << 1),
 261         CMD_WANT_SKB = (1 << 2),
 262         CMD_MAPPED = (1 << 3),
 263 };
 264
 265 #define DEF_CMD_PAYLOAD_SIZE 320
 266
 267 /**
 268  * struct iwl_device_cmd
 269  *
 270  * For allocation of the command and tx queues, this establishes the overall
 271  * size of the largest command we send to uCode, except for a scan command
 272  * (which is relatively huge; space is allocated separately).
 273  */
 274 struct iwl_device_cmd {
 275         struct iwl_cmd_header hdr;      /* uCode API */
 276         union {
 277                 u32 flags;
 278                 u8 val8;
 279                 u16 val16;
 280                 u32 val32;
 281                 struct iwl_tx_cmd tx;
 282                 struct iwl6000_channel_switch_cmd chswitch;
 283                 u8 payload[DEF_CMD_PAYLOAD_SIZE];
 284         } __packed cmd;
 285 } __packed;
 286
 287 #define TFD_MAX_PAYLOAD_SIZE (sizeof(struct iwl_device_cmd))
 288
 289
 290 struct iwl_host_cmd {
 291         const void *data;
 292         unsigned long reply_page;
 293         void (*callback)(struct iwl_priv *priv,
 294                          struct iwl_device_cmd *cmd,
 295                          struct iwl_rx_packet *pkt);
 296         u32 flags;
 297         u16 len;
 298         u8 id;
 299 };
 300
 301 #define SUP_RATE_11A_MAX_NUM_CHANNELS  8
 302 #define SUP_RATE_11B_MAX_NUM_CHANNELS  4
 303 #define SUP_RATE_11G_MAX_NUM_CHANNELS  12
 304
 305 /**
 306  * struct iwl_rx_queue - Rx queue
 307  * @bd: driver's pointer to buffer of receive buffer descriptors (rbd)
 308  * @bd_dma: bus address of buffer of receive buffer descriptors (rbd)
 309  * @read: Shared index to newest available Rx buffer
 310  * @write: Shared index to oldest written Rx packet
 311  * @free_count: Number of pre-allocated buffers in rx_free
 312  * @rx_free: list of free SKBs for use
 313  * @rx_used: List of Rx buffers with no SKB
 314  * @need_update: flag to indicate we need to update read/write index
 315  * @rb_stts: driver's pointer to receive buffer status
 316  * @rb_stts_dma: bus address of receive buffer status
 317  *
 318  * NOTE:  rx_free and rx_used are used as a FIFO for iwl_rx_mem_buffers
 319  */
 320 struct iwl_rx_queue {
 321         __le32 *bd;
 322         dma_addr_t bd_dma;
 323         struct iwl_rx_mem_buffer pool[RX_QUEUE_SIZE + RX_FREE_BUFFERS];
 324         struct iwl_rx_mem_buffer *queue[RX_QUEUE_SIZE];
 325         u32 read;
 326         u32 write;
 327         u32 free_count;
 328         u32 write_actual;
 329         struct list_head rx_free;
 330         struct list_head rx_used;
 331         int need_update;
 332         struct iwl_rb_status *rb_stts;
 333         dma_addr_t rb_stts_dma;
 334         spinlock_t lock;
 335 };
 336
 337 #define IWL_SUPPORTED_RATES_IE_LEN         8
 338
 339 #define MAX_TID_COUNT        9
 340
 341 #define IWL_INVALID_RATE     0xFF
 342 #define IWL_INVALID_VALUE    -1
 343
 344 /**
 345  * struct iwl_ht_agg -- aggregation status while waiting for block-ack
 346  * @txq_id: Tx queue used for Tx attempt
 347  * @frame_count: # frames attempted by Tx command
 348  * @wait_for_ba: Expect block-ack before next Tx reply
 349  * @start_idx: Index of 1st Transmit Frame Descriptor (TFD) in Tx window
 350  * @bitmap0: Low order bitmap, one bit for each frame pending ACK in Tx window
 351  * @bitmap1: High order, one bit for each frame pending ACK in Tx window
 352  * @rate_n_flags: Rate at which Tx was attempted
 353  *
 354  * If REPLY_TX indicates that aggregation was attempted, driver must wait
 355  * for block ack (REPLY_COMPRESSED_BA).  This struct stores tx reply info
 356  * until block ack arrives.
 357  */
 358 struct iwl_ht_agg {
 359         u16 txq_id;
 360         u16 frame_count;
 361         u16 wait_for_ba;
 362         u16 start_idx;
 363         u64 bitmap;
 364         u32 rate_n_flags;
 365 #define IWL_AGG_OFF 0
 366 #define IWL_AGG_ON 1
 367 #define IWL_EMPTYING_HW_QUEUE_ADDBA 2
 368 #define IWL_EMPTYING_HW_QUEUE_DELBA 3
 369         u8 state;
 370         u8 tx_fifo;
 371 };
 372
 373
 374 struct iwl_tid_data {
 375         u16 seq_number; /* agn only */
 376         u16 tfds_in_queue;
 377         struct iwl_ht_agg agg;
 378 };
 379
 380 struct iwl_hw_key {
 381         u32 cipher;
 382         int keylen;
 383         u8 keyidx;
 384         u8 key[32];
 385 };
 386
 387 union iwl_ht_rate_supp {
 388         u16 rates;
 389         struct {
 390                 u8 siso_rate;
 391                 u8 mimo_rate;
 392         };
 393 };
 394
 395 #define CFG_HT_RX_AMPDU_FACTOR_8K   (0x0)
 396 #define CFG_HT_RX_AMPDU_FACTOR_16K  (0x1)
 397 #define CFG_HT_RX_AMPDU_FACTOR_32K  (0x2)
 398 #define CFG_HT_RX_AMPDU_FACTOR_64K  (0x3)
 399 #define CFG_HT_RX_AMPDU_FACTOR_DEF  CFG_HT_RX_AMPDU_FACTOR_64K
 400 #define CFG_HT_RX_AMPDU_FACTOR_MAX  CFG_HT_RX_AMPDU_FACTOR_64K
 401 #define CFG_HT_RX_AMPDU_FACTOR_MIN  CFG_HT_RX_AMPDU_FACTOR_8K
 402
 403 /*
 404  * Maximal MPDU density for TX aggregation
 405  * 4 - 2us density
 406  * 5 - 4us density
 407  * 6 - 8us density
 408  * 7 - 16us density
 409  */
 410 #define CFG_HT_MPDU_DENSITY_2USEC   (0x4)
 411 #define CFG_HT_MPDU_DENSITY_4USEC   (0x5)
 412 #define CFG_HT_MPDU_DENSITY_8USEC   (0x6)
 413 #define CFG_HT_MPDU_DENSITY_16USEC  (0x7)
 414 #define CFG_HT_MPDU_DENSITY_DEF CFG_HT_MPDU_DENSITY_4USEC
 415 #define CFG_HT_MPDU_DENSITY_MAX CFG_HT_MPDU_DENSITY_16USEC
 416 #define CFG_HT_MPDU_DENSITY_MIN     (0x1)
 417
 418 struct iwl_ht_config {
 419         bool single_chain_sufficient;
 420         enum ieee80211_smps_mode smps; /* current smps mode */
 421 };
 422
 423 /* QoS structures */
 424 struct iwl_qos_info {
 425         int qos_active;
 426         struct iwl_qosparam_cmd def_qos_parm;
 427 };
 428
 429 /*
 430  * Structure should be accessed with sta_lock held. When station addition
 431  * is in progress (IWL_STA_UCODE_INPROGRESS) it is possible to access only
 432  * the commands (iwl_addsta_cmd and iwl_link_quality_cmd) without sta_lock
 433  * held.
 434  */
 435 struct iwl_station_entry {
 436         struct iwl_addsta_cmd sta;
 437         struct iwl_tid_data tid[MAX_TID_COUNT];
 438         u8 used, ctxid;
 439         struct iwl_hw_key keyinfo;
 440         struct iwl_link_quality_cmd *lq;
 441 };
 442
 443 struct iwl_station_priv_common {
 444         struct iwl_rxon_context *ctx;
 445         u8 sta_id;
 446 };
 447
 448 /*
 449  * iwl_station_priv: Driver's private station information
 450  *
 451  * When mac80211 creates a station it reserves some space (hw->sta_data_size)
 452  * in the structure for use by driver. This structure is places in that
 453  * space.
 454  */
 455 struct iwl_station_priv {
 456         struct iwl_station_priv_common common;
 457         struct iwl_lq_sta lq_sta;
 458         atomic_t pending_frames;
 459         bool client;
 460         bool asleep;
 461         u8 max_agg_bufsize;
 462 };
 463
 464 /**
 465  * struct iwl_vif_priv - driver's private per-interface information
 466  *
 467  * When mac80211 allocates a virtual interface, it can allocate
 468  * space for us to put data into.
 469  */
 470 struct iwl_vif_priv {
 471         struct iwl_rxon_context *ctx;
 472         u8 ibss_bssid_sta_id;
 473 };
 474
 475 /* one for each uCode image (inst/data, boot/init/runtime) */
 476 struct fw_desc {
 477         void *v_addr;           /* access by driver */
 478         dma_addr_t p_addr;      /* access by card's busmaster DMA */
 479         u32 len;                /* bytes */
 480 };
 481
 482 struct fw_img {
 483         struct fw_desc code, data;
 484 };
 485
 486 /* v1/v2 uCode file layout */
 487 struct iwl_ucode_header {
 488         __le32 ver;     /* major/minor/API/serial */
 489         union {
 490                 struct {
 491                         __le32 inst_size;       /* bytes of runtime code */
 492                         __le32 data_size;       /* bytes of runtime data */
 493                         __le32 init_size;       /* bytes of init code */
 494                         __le32 init_data_size;  /* bytes of init data */
 495                         __le32 boot_size;       /* bytes of bootstrap code */
 496                         u8 data[0];             /* in same order as sizes */
 497                 } v1;
 498                 struct {
 499                         __le32 build;           /* build number */
 500                         __le32 inst_size;       /* bytes of runtime code */
 501                         __le32 data_size;       /* bytes of runtime data */
 502                         __le32 init_size;       /* bytes of init code */
 503                         __le32 init_data_size;  /* bytes of init data */
 504                         __le32 boot_size;       /* bytes of bootstrap code */
 505                         u8 data[0];             /* in same order as sizes */
 506                 } v2;
 507         } u;
 508 };
 509
 510 /*
 511  * new TLV uCode file layout
 512  *
 513  * The new TLV file format contains TLVs, that each specify
 514  * some piece of data. To facilitate "groups", for example
 515  * different instruction image with different capabilities,
 516  * bundled with the same init image, an alternative mechanism
 517  * is provided:
 518  * When the alternative field is 0, that means that the item
 519  * is always valid. When it is non-zero, then it is only
 520  * valid in conjunction with items of the same alternative,
 521  * in which case the driver (user) selects one alternative
 522  * to use.
 523  */
 524
 525 enum iwl_ucode_tlv_type {
 526         IWL_UCODE_TLV_INVALID           = 0, /* unused */
 527         IWL_UCODE_TLV_INST              = 1,
 528         IWL_UCODE_TLV_DATA              = 2,
 529         IWL_UCODE_TLV_INIT              = 3,
 530         IWL_UCODE_TLV_INIT_DATA         = 4,
 531         IWL_UCODE_TLV_BOOT              = 5,
 532         IWL_UCODE_TLV_PROBE_MAX_LEN     = 6, /* a u32 value */
 533         IWL_UCODE_TLV_PAN               = 7,
 534         IWL_UCODE_TLV_RUNT_EVTLOG_PTR   = 8,
 535         IWL_UCODE_TLV_RUNT_EVTLOG_SIZE  = 9,
 536         IWL_UCODE_TLV_RUNT_ERRLOG_PTR   = 10,
 537         IWL_UCODE_TLV_INIT_EVTLOG_PTR   = 11,
 538         IWL_UCODE_TLV_INIT_EVTLOG_SIZE  = 12,
 539         IWL_UCODE_TLV_INIT_ERRLOG_PTR   = 13,
 540         IWL_UCODE_TLV_ENHANCE_SENS_TBL  = 14,
 541         IWL_UCODE_TLV_PHY_CALIBRATION_SIZE = 15,
 542         /* 16 and 17 reserved for future use */
 543         IWL_UCODE_TLV_FLAGS             = 18,
 544 };
 545
 546 /**
 547  * enum iwl_ucode_tlv_flag - ucode API flags
 548  * @IWL_UCODE_TLV_FLAGS_PAN: This is PAN capable microcode; this previously
 549  *      was a separate TLV but moved here to save space.
 550  * @IWL_UCODE_TLV_FLAGS_NEWSCAN: new uCode scan behaviour on hidden SSID,
 551  *      treats good CRC threshold as a boolean
 552  * @IWL_UCODE_TLV_FLAGS_MFP: This uCode image supports MFP (802.11w).
 553  */
 554 enum iwl_ucode_tlv_flag {
 555         IWL_UCODE_TLV_FLAGS_PAN         = BIT(0),
 556         IWL_UCODE_TLV_FLAGS_NEWSCAN     = BIT(1),
 557         IWL_UCODE_TLV_FLAGS_MFP         = BIT(2),
 558 };
 559
 560 struct iwl_ucode_tlv {
 561         __le16 type;            /* see above */
 562         __le16 alternative;     /* see comment */
 563         __le32 length;          /* not including type/length fields */
 564         u8 data[0];
 565 } __packed;
 566
 567 #define IWL_TLV_UCODE_MAGIC     0x0a4c5749
 568
 569 struct iwl_tlv_ucode_header {
 570         /*
 571          * The TLV style ucode header is distinguished from
 572          * the v1/v2 style header by first four bytes being
 573          * zero, as such is an invalid combination of
 574          * major/minor/API/serial versions.
 575          */
 576         __le32 zero;
 577         __le32 magic;
 578         u8 human_readable[64];
 579         __le32 ver;             /* major/minor/API/serial */
 580         __le32 build;
 581         __le64 alternatives;    /* bitmask of valid alternatives */
 582         /*
 583          * The data contained herein has a TLV layout,
 584          * see above for the TLV header and types.
 585          * Note that each TLV is padded to a length
 586          * that is a multiple of 4 for alignment.
 587          */
 588         u8 data[0];
 589 };
 590
 591 struct iwl_sensitivity_ranges {
 592         u16 min_nrg_cck;
 593         u16 max_nrg_cck;
 594
 595         u16 nrg_th_cck;
 596         u16 nrg_th_ofdm;
 597
 598         u16 auto_corr_min_ofdm;
 599         u16 auto_corr_min_ofdm_mrc;
 600         u16 auto_corr_min_ofdm_x1;
 601         u16 auto_corr_min_ofdm_mrc_x1;
 602
 603         u16 auto_corr_max_ofdm;
 604         u16 auto_corr_max_ofdm_mrc;
 605         u16 auto_corr_max_ofdm_x1;
 606         u16 auto_corr_max_ofdm_mrc_x1;
 607
 608         u16 auto_corr_max_cck;
 609         u16 auto_corr_max_cck_mrc;
 610         u16 auto_corr_min_cck;
 611         u16 auto_corr_min_cck_mrc;
 612
 613         u16 barker_corr_th_min;
 614         u16 barker_corr_th_min_mrc;
 615         u16 nrg_th_cca;
 616 };
 617
 618
 619 #define KELVIN_TO_CELSIUS(x) ((x)-273)
 620 #define CELSIUS_TO_KELVIN(x) ((x)+273)
 621
 622
 623 /**
 624  * struct iwl_hw_params
 625  * @max_txq_num: Max # Tx queues supported
 626  * @dma_chnl_num: Number of Tx DMA/FIFO channels
 627  * @scd_bc_tbls_size: size of scheduler byte count tables
 628  * @tfd_size: TFD size
 629  * @tx/rx_chains_num: Number of TX/RX chains
 630  * @valid_tx/rx_ant: usable antennas
 631  * @max_rxq_size: Max # Rx frames in Rx queue (must be power-of-2)
 632  * @max_rxq_log: Log-base-2 of max_rxq_size
 633  * @rx_page_order: Rx buffer page order
 634  * @rx_wrt_ptr_reg: FH{39}_RSCSR_CHNL0_WPTR
 635  * @max_stations:
 636  * @ht40_channel: is 40MHz width possible in band 2.4
 637  * BIT(IEEE80211_BAND_5GHZ) BIT(IEEE80211_BAND_5GHZ)
 638  * @sw_crypto: 0 for hw, 1 for sw
 639  * @max_xxx_size: for ucode uses
 640  * @ct_kill_threshold: temperature threshold
 641  * @beacon_time_tsf_bits: number of valid tsf bits for beacon time
 642  * @calib_init_cfg: setup initial calibrations for the hw
 643  * @calib_rt_cfg: setup runtime calibrations for the hw
 644  * @struct iwl_sensitivity_ranges: range of sensitivity values
 645  */
 646 struct iwl_hw_params {
 647         u8 max_txq_num;
 648         u8 dma_chnl_num;
 649         u16 scd_bc_tbls_size;
 650         u32 tfd_size;
 651         u8  tx_chains_num;
 652         u8  rx_chains_num;
 653         u8  valid_tx_ant;
 654         u8  valid_rx_ant;
 655         u16 max_rxq_size;
 656         u16 max_rxq_log;
 657         u32 rx_page_order;
 658         u32 rx_wrt_ptr_reg;
 659         u8  max_stations;
 660         u8  ht40_channel;
 661         u8  max_beacon_itrvl;   /* in 1024 ms */
 662         u32 max_inst_size;
 663         u32 max_data_size;
 664         u32 ct_kill_threshold; /* value in hw-dependent units */
 665         u32 ct_kill_exit_threshold; /* value in hw-dependent units */
 666                                     /* for 1000, 6000 series and up */
 667         u16 beacon_time_tsf_bits;
 668         u32 calib_init_cfg;
 669         u32 calib_rt_cfg;
 670         const struct iwl_sensitivity_ranges *sens;
 671 };
 672
 673
 674 /******************************************************************************
 675  *
 676  * Functions implemented in core module which are forward declared here
 677  * for use by iwl-[4-5].c
 678  *
 679  * NOTE:  The implementation of these functions are not hardware specific
 680  * which is why they are in the core module files.
 681  *
 682  * Naming convention --
 683  * iwl_         <-- Is part of iwlwifi
 684  * iwlXXXX_     <-- Hardware specific (implemented in iwl-XXXX.c for XXXX)
 685  *
 686  ****************************************************************************/
 687 extern void iwl_update_chain_flags(struct iwl_priv *priv);
 688 extern const u8 iwl_bcast_addr[ETH_ALEN];
 689 extern int iwl_rxq_stop(struct iwl_priv *priv);
 690 extern void iwl_txq_ctx_stop(struct iwl_priv *priv);
 691 extern int iwl_queue_space(const struct iwl_queue *q);
 692 static inline int iwl_queue_used(const struct iwl_queue *q, int i)
 693 {
 694         return q->write_ptr >= q->read_ptr ?
 695                 (i >= q->read_ptr && i < q->write_ptr) :
 696                 !(i < q->read_ptr && i >= q->write_ptr);
 697 }
 698
 699
 700 static inline u8 get_cmd_index(struct iwl_queue *q, u32 index, int is_huge)
 701 {
 702         /*
 703          * This is for init calibration result and scan command which
 704          * required buffer > TFD_MAX_PAYLOAD_SIZE,
 705          * the big buffer at end of command array
 706          */
 707         if (is_huge)
 708                 return q->n_window;     /* must be power of 2 */
 709
 710         /* Otherwise, use normal size buffers */
 711         return index & (q->n_window - 1);
 712 }
 713
 714
 715 struct iwl_dma_ptr {
 716         dma_addr_t dma;
 717         void *addr;
 718         size_t size;
 719 };
 720
 721 #define IWL_OPERATION_MODE_AUTO     0
 722 #define IWL_OPERATION_MODE_HT_ONLY  1
 723 #define IWL_OPERATION_MODE_MIXED    2
 724 #define IWL_OPERATION_MODE_20MHZ    3
 725
 726 #define IWL_TX_CRC_SIZE 4
 727 #define IWL_TX_DELIMITER_SIZE 4
 728
 729 #define TX_POWER_IWL_ILLEGAL_VOLTAGE -10000
 730
 731 /* Sensitivity and chain noise calibration */
 732 #define INITIALIZATION_VALUE            0xFFFF
 733 #define IWL_CAL_NUM_BEACONS             16
 734 #define MAXIMUM_ALLOWED_PATHLOSS        15
 735
 736 #define CHAIN_NOISE_MAX_DELTA_GAIN_CODE 3
 737
 738 #define MAX_FA_OFDM  50
 739 #define MIN_FA_OFDM  5
 740 #define MAX_FA_CCK   50
 741 #define MIN_FA_CCK   5
 742
 743 #define AUTO_CORR_STEP_OFDM       1
 744
 745 #define AUTO_CORR_STEP_CCK     3
 746 #define AUTO_CORR_MAX_TH_CCK   160
 747
 748 #define NRG_DIFF               2
 749 #define NRG_STEP_CCK           2
 750 #define NRG_MARGIN             8
 751 #define MAX_NUMBER_CCK_NO_FA 100
 752
 753 #define AUTO_CORR_CCK_MIN_VAL_DEF    (125)
 754
 755 #define CHAIN_A             0
 756 #define CHAIN_B             1
 757 #define CHAIN_C             2
 758 #define CHAIN_NOISE_DELTA_GAIN_INIT_VAL 4
 759 #define ALL_BAND_FILTER                 0xFF00
 760 #define IN_BAND_FILTER                  0xFF
 761 #define MIN_AVERAGE_NOISE_MAX_VALUE     0xFFFFFFFF
 762
 763 #define NRG_NUM_PREV_STAT_L     20
 764 #define NUM_RX_CHAINS           3
 765
 766 enum iwlagn_false_alarm_state {
 767         IWL_FA_TOO_MANY = 0,
 768         IWL_FA_TOO_FEW = 1,
 769         IWL_FA_GOOD_RANGE = 2,
 770 };
 771
 772 enum iwlagn_chain_noise_state {
 773         IWL_CHAIN_NOISE_ALIVE = 0,  /* must be 0 */
 774         IWL_CHAIN_NOISE_ACCUMULATE,
 775         IWL_CHAIN_NOISE_CALIBRATED,
 776         IWL_CHAIN_NOISE_DONE,
 777 };
 778
 779
 780 /*
 781  * enum iwl_calib
 782  * defines the order in which results of initial calibrations
 783  * should be sent to the runtime uCode
 784  */
 785 enum iwl_calib {
 786         IWL_CALIB_XTAL,
 787         IWL_CALIB_DC,
 788         IWL_CALIB_LO,
 789         IWL_CALIB_TX_IQ,
 790         IWL_CALIB_TX_IQ_PERD,
 791         IWL_CALIB_BASE_BAND,
 792         IWL_CALIB_TEMP_OFFSET,
 793         IWL_CALIB_MAX
 794 };
 795
 796 /* Opaque calibration results */
 797 struct iwl_calib_result {
 798         void *buf;
 799         size_t buf_len;
 800 };
 801
 802 /* Sensitivity calib data */
 803 struct iwl_sensitivity_data {
 804         u32 auto_corr_ofdm;
 805         u32 auto_corr_ofdm_mrc;
 806         u32 auto_corr_ofdm_x1;
 807         u32 auto_corr_ofdm_mrc_x1;
 808         u32 auto_corr_cck;
 809         u32 auto_corr_cck_mrc;
 810
 811         u32 last_bad_plcp_cnt_ofdm;
 812         u32 last_fa_cnt_ofdm;
 813         u32 last_bad_plcp_cnt_cck;
 814         u32 last_fa_cnt_cck;
 815
 816         u32 nrg_curr_state;
 817         u32 nrg_prev_state;
 818         u32 nrg_value[10];
 819         u8  nrg_silence_rssi[NRG_NUM_PREV_STAT_L];
 820         u32 nrg_silence_ref;
 821         u32 nrg_energy_idx;
 822         u32 nrg_silence_idx;
 823         u32 nrg_th_cck;
 824         s32 nrg_auto_corr_silence_diff;
 825         u32 num_in_cck_no_fa;
 826         u32 nrg_th_ofdm;
 827
 828         u16 barker_corr_th_min;
 829         u16 barker_corr_th_min_mrc;
 830         u16 nrg_th_cca;
 831 };
 832
 833 /* Chain noise (differential Rx gain) calib data */
 834 struct iwl_chain_noise_data {
 835         u32 active_chains;
 836         u32 chain_noise_a;
 837         u32 chain_noise_b;
 838         u32 chain_noise_c;
 839         u32 chain_signal_a;
 840         u32 chain_signal_b;
 841         u32 chain_signal_c;
 842         u16 beacon_count;
 843         u8 disconn_array[NUM_RX_CHAINS];
 844         u8 delta_gain_code[NUM_RX_CHAINS];
 845         u8 radio_write;
 846         u8 state;
 847 };
 848
 849 #define EEPROM_SEM_TIMEOUT 10           /* milliseconds */
 850 #define EEPROM_SEM_RETRY_LIMIT 1000     /* number of attempts (not time) */
 851
 852 #define IWL_TRAFFIC_ENTRIES     (256)
 853 #define IWL_TRAFFIC_ENTRY_SIZE  (64)
 854
 855 enum {
 856         MEASUREMENT_READY = (1 << 0),
 857         MEASUREMENT_ACTIVE = (1 << 1),
 858 };
 859
 860 enum iwl_nvm_type {
 861         NVM_DEVICE_TYPE_EEPROM = 0,
 862         NVM_DEVICE_TYPE_OTP,
 863 };
 864
 865 /*
 866  * Two types of OTP memory access modes
 867  *   IWL_OTP_ACCESS_ABSOLUTE - absolute address mode,
 868  *                              based on physical memory addressing
 869  *   IWL_OTP_ACCESS_RELATIVE - relative address mode,
 870  *                             based on logical memory addressing
 871  */
 872 enum iwl_access_mode {
 873         IWL_OTP_ACCESS_ABSOLUTE,
 874         IWL_OTP_ACCESS_RELATIVE,
 875 };
 876
 877 /**
 878  * enum iwl_pa_type - Power Amplifier type
 879  * @IWL_PA_SYSTEM:  based on uCode configuration
 880  * @IWL_PA_INTERNAL: use Internal only
 881  */
 882 enum iwl_pa_type {
 883         IWL_PA_SYSTEM = 0,
 884         IWL_PA_INTERNAL = 1,
 885 };
 886
 887 /* interrupt statistics */
 888 struct isr_statistics {
 889         u32 hw;
 890         u32 sw;
 891         u32 err_code;
 892         u32 sch;
 893         u32 alive;
 894         u32 rfkill;
 895         u32 ctkill;
 896         u32 wakeup;
 897         u32 rx;
 898         u32 rx_handlers[REPLY_MAX];
 899         u32 tx;
 900         u32 unhandled;
 901 };
 902
 903 /* reply_tx_statistics (for _agn devices) */
 904 struct reply_tx_error_statistics {
 905         u32 pp_delay;
 906         u32 pp_few_bytes;
 907         u32 pp_bt_prio;
 908         u32 pp_quiet_period;
 909         u32 pp_calc_ttak;
 910         u32 int_crossed_retry;
 911         u32 short_limit;
 912         u32 long_limit;
 913         u32 fifo_underrun;
 914         u32 drain_flow;
 915         u32 rfkill_flush;
 916         u32 life_expire;
 917         u32 dest_ps;
 918         u32 host_abort;
 919         u32 bt_retry;
 920         u32 sta_invalid;
 921         u32 frag_drop;
 922         u32 tid_disable;
 923         u32 fifo_flush;
 924         u32 insuff_cf_poll;
 925         u32 fail_hw_drop;
 926         u32 sta_color_mismatch;
 927         u32 unknown;
 928 };
 929
 930 /* reply_agg_tx_statistics (for _agn devices) */
 931 struct reply_agg_tx_error_statistics {
 932         u32 underrun;
 933         u32 bt_prio;
 934         u32 few_bytes;
 935         u32 abort;
 936         u32 last_sent_ttl;
 937         u32 last_sent_try;
 938         u32 last_sent_bt_kill;
 939         u32 scd_query;
 940         u32 bad_crc32;
 941         u32 response;
 942         u32 dump_tx;
 943         u32 delay_tx;
 944         u32 unknown;
 945 };
 946
 947 /* management statistics */
 948 enum iwl_mgmt_stats {
 949         MANAGEMENT_ASSOC_REQ = 0,
 950         MANAGEMENT_ASSOC_RESP,
 951         MANAGEMENT_REASSOC_REQ,
 952         MANAGEMENT_REASSOC_RESP,
 953         MANAGEMENT_PROBE_REQ,
 954         MANAGEMENT_PROBE_RESP,
 955         MANAGEMENT_BEACON,
 956         MANAGEMENT_ATIM,
 957         MANAGEMENT_DISASSOC,
 958         MANAGEMENT_AUTH,
 959         MANAGEMENT_DEAUTH,
 960         MANAGEMENT_ACTION,
 961         MANAGEMENT_MAX,
 962 };
 963 /* control statistics */
 964 enum iwl_ctrl_stats {
 965         CONTROL_BACK_REQ =  0,
 966         CONTROL_BACK,
 967         CONTROL_PSPOLL,
 968         CONTROL_RTS,
 969         CONTROL_CTS,
 970         CONTROL_ACK,
 971         CONTROL_CFEND,
 972         CONTROL_CFENDACK,
 973         CONTROL_MAX,
 974 };
 975
 976 struct traffic_stats {
 977 #ifdef CONFIG_IWLWIFI_DEBUGFS
 978         u32 mgmt[MANAGEMENT_MAX];
 979         u32 ctrl[CONTROL_MAX];
 980         u32 data_cnt;
 981         u64 data_bytes;
 982 #endif
 983 };
 984
 985 /*
 986  * iwl_switch_rxon: "channel switch" structure
 987  *
 988  * @ switch_in_progress: channel switch in progress
 989  * @ channel: new channel
 990  */
 991 struct iwl_switch_rxon {
 992         bool switch_in_progress;
 993         __le16 channel;
 994 };
 995
 996 /*
 997  * schedule the timer to wake up every UCODE_TRACE_PERIOD milliseconds
 998  * to perform continuous uCode event logging operation if enabled
 999  */
1000 #define UCODE_TRACE_PERIOD (100)
1001
1002 /*
1003  * iwl_event_log: current uCode event log position
1004  *
1005  * @ucode_trace: enable/disable ucode continuous trace timer
1006  * @num_wraps: how many times the event buffer wraps
1007  * @next_entry:  the entry just before the next one that uCode would fill
1008  * @non_wraps_count: counter for no wrap detected when dump ucode events
1009  * @wraps_once_count: counter for wrap once detected when dump ucode events
1010  * @wraps_more_count: counter for wrap more than once detected
1011  *                    when dump ucode events
1012  */
1013 struct iwl_event_log {
1014         bool ucode_trace;
1015         u32 num_wraps;
1016         u32 next_entry;
1017         int non_wraps_count;
1018         int wraps_once_count;
1019         int wraps_more_count;
1020 };
1021
1022 /*
1023  * host interrupt timeout value
1024  * used with setting interrupt coalescing timer
1025  * the CSR_INT_COALESCING is an 8 bit register in 32-usec unit
1026  *
1027  * default interrupt coalescing timer is 64 x 32 = 2048 usecs
1028  * default interrupt coalescing calibration timer is 16 x 32 = 512 usecs
1029  */
1030 #define IWL_HOST_INT_TIMEOUT_MAX        (0xFF)
1031 #define IWL_HOST_INT_TIMEOUT_DEF        (0x40)
1032 #define IWL_HOST_INT_TIMEOUT_MIN        (0x0)
1033 #define IWL_HOST_INT_CALIB_TIMEOUT_MAX  (0xFF)
1034 #define IWL_HOST_INT_CALIB_TIMEOUT_DEF  (0x10)
1035 #define IWL_HOST_INT_CALIB_TIMEOUT_MIN  (0x0)
1036
1037 /*
1038  * This is the threshold value of plcp error rate per 100mSecs.  It is
1039  * used to set and check for the validity of plcp_delta.
1040  */
1041 #define IWL_MAX_PLCP_ERR_THRESHOLD_MIN  (1)
1042 #define IWL_MAX_PLCP_ERR_THRESHOLD_DEF  (50)
1043 #define IWL_MAX_PLCP_ERR_LONG_THRESHOLD_DEF     (100)
1044 #define IWL_MAX_PLCP_ERR_EXT_LONG_THRESHOLD_DEF (200)
1045 #define IWL_MAX_PLCP_ERR_THRESHOLD_MAX  (255)
1046 #define IWL_MAX_PLCP_ERR_THRESHOLD_DISABLE      (0)
1047
1048 #define IWL_DELAY_NEXT_FORCE_RF_RESET  (HZ*3)
1049 #define IWL_DELAY_NEXT_FORCE_FW_RELOAD (HZ*5)
1050
1051 /* TX queue watchdog timeouts in mSecs */
1052 #define IWL_DEF_WD_TIMEOUT      (2000)
1053 #define IWL_LONG_WD_TIMEOUT     (10000)
1054 #define IWL_MAX_WD_TIMEOUT      (120000)
1055
1056 /* BT Antenna Coupling Threshold (dB) */
1057 #define IWL_BT_ANTENNA_COUPLING_THRESHOLD       (35)
1058
1059 /* Firmware reload counter and Timestamp */
1060 #define IWL_MIN_RELOAD_DURATION         1000 /* 1000 ms */
1061 #define IWL_MAX_CONTINUE_RELOAD_CNT     4
1062
1063
1064 enum iwl_reset {
1065         IWL_RF_RESET = 0,
1066         IWL_FW_RESET,
1067         IWL_MAX_FORCE_RESET,
1068 };
1069
1070 struct iwl_force_reset {
1071         int reset_request_count;
1072         int reset_success_count;
1073         int reset_reject_count;
1074         unsigned long reset_duration;
1075         unsigned long last_force_reset_jiffies;
1076 };
1077
1078 /* extend beacon time format bit shifting  */
1079 /*
1080  * for _agn devices
1081  * bits 31:22 - extended
1082  * bits 21:0  - interval
1083  */
1084 #define IWLAGN_EXT_BEACON_TIME_POS      22
1085
1086 /**
1087  * struct iwl_notification_wait - notification wait entry
1088  * @list: list head for global list
1089  * @fn: function called with the notification
1090  * @cmd: command ID
1091  *
1092  * This structure is not used directly, to wait for a
1093  * notification declare it on the stack, and call
1094  * iwlagn_init_notification_wait() with appropriate
1095  * parameters. Then do whatever will cause the ucode
1096  * to notify the driver, and to wait for that then
1097  * call iwlagn_wait_notification().
1098  *
1099  * Each notification is one-shot. If at some point we
1100  * need to support multi-shot notifications (which
1101  * can't be allocated on the stack) we need to modify
1102  * the code for them.
1103  */
1104 struct iwl_notification_wait {
1105         struct list_head list;
1106
1107         void (*fn)(struct iwl_priv *priv, struct iwl_rx_packet *pkt,
1108                    void *data);
1109         void *fn_data;
1110
1111         u8 cmd;
1112         bool triggered, aborted;
1113 };
1114
1115 enum iwl_rxon_context_id {
1116         IWL_RXON_CTX_BSS,
1117         IWL_RXON_CTX_PAN,
1118
1119         NUM_IWL_RXON_CTX
1120 };
1121
1122 struct iwl_rxon_context {
1123         struct ieee80211_vif *vif;
1124
1125         const u8 *ac_to_fifo;
1126         const u8 *ac_to_queue;
1127         u8 mcast_queue;
1128
1129         /*
1130          * We could use the vif to indicate active, but we
1131          * also need it to be active during disabling when
1132          * we already removed the vif for type setting.
1133          */
1134         bool always_active, is_active;
1135
1136         bool ht_need_multiple_chains;
1137
1138         enum iwl_rxon_context_id ctxid;
1139
1140         u32 interface_modes, exclusive_interface_modes;
1141         u8 unused_devtype, ap_devtype, ibss_devtype, station_devtype;
1142
1143         /*
1144          * We declare this const so it can only be
1145          * changed via explicit cast within the
1146          * routines that actually update the physical
1147          * hardware.
1148          */
1149         const struct iwl_rxon_cmd active;
1150         struct iwl_rxon_cmd staging;
1151
1152         struct iwl_rxon_time_cmd timing;
1153
1154         struct iwl_qos_info qos_data;
1155
1156         u8 bcast_sta_id, ap_sta_id;
1157
1158         u8 rxon_cmd, rxon_assoc_cmd, rxon_timing_cmd;
1159         u8 qos_cmd;
1160         u8 wep_key_cmd;
1161
1162         struct iwl_wep_key wep_keys[WEP_KEYS_MAX];
1163         u8 key_mapping_keys;
1164
1165         __le32 station_flags;
1166
1167         struct {
1168                 bool non_gf_sta_present;
1169                 u8 protection;
1170                 bool enabled, is_40mhz;
1171                 u8 extension_chan_offset;
1172         } ht;
1173
1174         bool last_tx_rejected;
1175 };
1176
1177 enum iwl_scan_type {
1178         IWL_SCAN_NORMAL,
1179         IWL_SCAN_RADIO_RESET,
1180         IWL_SCAN_OFFCH_TX,
1181 };
1182
1183 struct iwl_priv {
1184
1185         /* ieee device used by generic ieee processing code */
1186         struct ieee80211_hw *hw;
1187         struct ieee80211_channel *ieee_channels;
1188         struct ieee80211_rate *ieee_rates;
1189         struct iwl_cfg *cfg;
1190
1191         /* temporary frame storage list */
1192         struct list_head free_frames;
1193         int frames_count;
1194
1195         enum ieee80211_band band;
1196
1197         void (*rx_handlers[REPLY_MAX])(struct iwl_priv *priv,
1198                                        struct iwl_rx_mem_buffer *rxb);
1199
1200         struct ieee80211_supported_band bands[IEEE80211_NUM_BANDS];
1201
1202         /* spectrum measurement report caching */
1203         struct iwl_spectrum_notification measure_report;
1204         u8 measurement_status;
1205
1206         /* ucode beacon time */
1207         u32 ucode_beacon_time;
1208         int missed_beacon_threshold;
1209
1210         /* track IBSS manager (last beacon) status */
1211         u32 ibss_manager;
1212
1213         /* jiffies when last recovery from statistics was performed */
1214         unsigned long rx_statistics_jiffies;
1215
1216         /* force reset */
1217         struct iwl_force_reset force_reset[IWL_MAX_FORCE_RESET];
1218
1219         /* firmware reload counter and timestamp */
1220         unsigned long reload_jiffies;
1221         int reload_count;
1222
1223         /* we allocate array of iwl_channel_info for NIC's valid channels.
1224          *    Access via channel # using indirect index array */
1225         struct iwl_channel_info *channel_info;  /* channel info array */
1226         u8 channel_count;       /* # of channels */
1227
1228         /* thermal calibration */
1229         s32 temperature;        /* degrees Kelvin */
1230         s32 last_temperature;
1231
1232         /* init calibration results */
1233         struct iwl_calib_result calib_results[IWL_CALIB_MAX];
1234
1235         /* Scan related variables */
1236         unsigned long scan_start;
1237         unsigned long scan_start_tsf;
1238         void *scan_cmd;
1239         enum ieee80211_band scan_band;
1240         struct cfg80211_scan_request *scan_request;
1241         struct ieee80211_vif *scan_vif;
1242         enum iwl_scan_type scan_type;
1243         u8 scan_tx_ant[IEEE80211_NUM_BANDS];
1244         u8 mgmt_tx_ant;
1245
1246         /* spinlock */
1247         spinlock_t lock;        /* protect general shared data */
1248         spinlock_t hcmd_lock;   /* protect hcmd */
1249         spinlock_t reg_lock;    /* protect hw register access */
1250         struct mutex mutex;
1251
1252         /* basic pci-network driver stuff */
1253         struct pci_dev *pci_dev;
1254
1255         /* pci hardware address support */
1256         void __iomem *hw_base;
1257
1258         /* microcode/device supports multiple contexts */
1259         u8 valid_contexts;
1260
1261         /* command queue number */
1262         u8 cmd_queue;
1263
1264         /* max number of station keys */
1265         u8 sta_key_max_num;
1266
1267         bool new_scan_threshold_behaviour;
1268
1269         /* EEPROM MAC addresses */
1270         struct mac_address addresses[2];
1271
1272         /* uCode images, save to reload in case of failure */
1273         int fw_index;                   /* firmware we're trying to load */
1274         u32 ucode_ver;                  /* version of ucode, copy of
1275                                            iwl_ucode.ver */
1276         struct fw_img ucode_rt;
1277         struct fw_img ucode_init;
1278
1279         enum iwlagn_ucode_subtype ucode_type;
1280         u8 ucode_write_complete;        /* the image write is complete */
1281         char firmware_name[25];
1282
1283         struct iwl_rxon_context contexts[NUM_IWL_RXON_CTX];
1284
1285         struct iwl_switch_rxon switch_rxon;
1286
1287         struct {
1288                 u32 error_event_table;
1289                 u32 log_event_table;
1290         } device_pointers;
1291
1292         u16 active_rate;
1293
1294         u8 start_calib;
1295         struct iwl_sensitivity_data sensitivity_data;
1296         struct iwl_chain_noise_data chain_noise_data;
1297         bool enhance_sensitivity_table;
1298         __le16 sensitivity_tbl[HD_TABLE_SIZE];
1299         __le16 enhance_sensitivity_tbl[ENHANCE_HD_TABLE_ENTRIES];
1300
1301         struct iwl_ht_config current_ht_config;
1302
1303         /* Rate scaling data */
1304         u8 retry_rate;
1305
1306         wait_queue_head_t wait_command_queue;
1307
1308         int activity_timer_active;
1309
1310         /* Rx and Tx DMA processing queues */
1311         struct iwl_rx_queue rxq;
1312         struct iwl_tx_queue *txq;
1313         unsigned long txq_ctx_active_msk;
1314         struct iwl_dma_ptr  kw; /* keep warm address */
1315         struct iwl_dma_ptr  scd_bc_tbls;
1316
1317         u32 scd_base_addr;      /* scheduler sram base address */
1318
1319         unsigned long status;
1320
1321         /* counts mgmt, ctl, and data packets */
1322         struct traffic_stats tx_stats;
1323         struct traffic_stats rx_stats;
1324
1325         /* counts interrupts */
1326         struct isr_statistics isr_stats;
1327
1328         struct iwl_power_mgr power_data;
1329         struct iwl_tt_mgmt thermal_throttle;
1330
1331         /* station table variables */
1332
1333         /* Note: if lock and sta_lock are needed, lock must be acquired first */
1334         spinlock_t sta_lock;
1335         int num_stations;
1336         struct iwl_station_entry stations[IWLAGN_STATION_COUNT];
1337         unsigned long ucode_key_table;
1338
1339         /* queue refcounts */
1340 #define IWL_MAX_HW_QUEUES       32
1341         unsigned long queue_stopped[BITS_TO_LONGS(IWL_MAX_HW_QUEUES)];
1342         /* for each AC */
1343         atomic_t queue_stop_count[4];
1344
1345         /* Indication if ieee80211_ops->open has been called */
1346         u8 is_open;
1347
1348         u8 mac80211_registered;
1349
1350         /* eeprom -- this is in the card's little endian byte order */
1351         u8 *eeprom;
1352         int    nvm_device_type;
1353         struct iwl_eeprom_calib_info *calib_info;
1354
1355         enum nl80211_iftype iw_mode;
1356
1357         /* Last Rx'd beacon timestamp */
1358         u64 timestamp;
1359
1360         struct {
1361                 __le32 flag;
1362                 struct statistics_general_common common;
1363                 struct statistics_rx_non_phy rx_non_phy;
1364                 struct statistics_rx_phy rx_ofdm;
1365                 struct statistics_rx_ht_phy rx_ofdm_ht;
1366                 struct statistics_rx_phy rx_cck;
1367                 struct statistics_tx tx;
1368 #ifdef CONFIG_IWLWIFI_DEBUGFS
1369                 struct statistics_bt_activity bt_activity;
1370                 __le32 num_bt_kills, accum_num_bt_kills;
1371 #endif
1372         } statistics;
1373 #ifdef CONFIG_IWLWIFI_DEBUGFS
1374         struct {
1375                 struct statistics_general_common common;
1376                 struct statistics_rx_non_phy rx_non_phy;
1377                 struct statistics_rx_phy rx_ofdm;
1378                 struct statistics_rx_ht_phy rx_ofdm_ht;
1379                 struct statistics_rx_phy rx_cck;
1380                 struct statistics_tx tx;
1381                 struct statistics_bt_activity bt_activity;
1382         } accum_stats, delta_stats, max_delta_stats;
1383 #endif
1384
1385         struct {
1386                 /* INT ICT Table */
1387                 __le32 *ict_tbl;
1388                 void *ict_tbl_vir;
1389                 dma_addr_t ict_tbl_dma;
1390                 dma_addr_t aligned_ict_tbl_dma;
1391                 int ict_index;
1392                 u32 inta;
1393                 bool use_ict;
1394                 /*
1395                  * reporting the number of tids has AGG on. 0 means
1396                  * no AGGREGATION
1397                  */
1398                 u8 agg_tids_count;
1399
1400                 struct iwl_rx_phy_res last_phy_res;
1401                 bool last_phy_res_valid;
1402
1403                 struct completion firmware_loading_complete;
1404
1405                 u32 init_evtlog_ptr, init_evtlog_size, init_errlog_ptr;
1406                 u32 inst_evtlog_ptr, inst_evtlog_size, inst_errlog_ptr;
1407
1408                 /*
1409                  * chain noise reset and gain commands are the
1410                  * two extra calibration commands follows the standard
1411                  * phy calibration commands
1412                  */
1413                 u8 phy_calib_chain_noise_reset_cmd;
1414                 u8 phy_calib_chain_noise_gain_cmd;
1415
1416                 /* counts reply_tx error */
1417                 struct reply_tx_error_statistics reply_tx_stats;
1418                 struct reply_agg_tx_error_statistics reply_agg_tx_stats;
1419                 /* notification wait support */
1420                 struct list_head notif_waits;
1421                 spinlock_t notif_wait_lock;
1422                 wait_queue_head_t notif_waitq;
1423
1424                 /* remain-on-channel offload support */
1425                 struct ieee80211_channel *hw_roc_channel;
1426                 struct delayed_work hw_roc_work;
1427                 enum nl80211_channel_type hw_roc_chantype;
1428                 int hw_roc_duration;
1429                 bool hw_roc_setup;
1430
1431                 struct sk_buff *offchan_tx_skb;
1432                 int offchan_tx_timeout;
1433                 struct ieee80211_channel *offchan_tx_chan;
1434         } _agn;
1435
1436         /* bt coex */
1437         u8 bt_enable_flag;
1438         u8 bt_status;
1439         u8 bt_traffic_load, last_bt_traffic_load;
1440         bool bt_ch_announce;
1441         bool bt_full_concurrent;
1442         bool bt_ant_couple_ok;
1443         __le32 kill_ack_mask;
1444         __le32 kill_cts_mask;
1445         __le16 bt_valid;
1446         u16 bt_on_thresh;
1447         u16 bt_duration;
1448         u16 dynamic_frag_thresh;
1449         u8 bt_ci_compliance;
1450         struct work_struct bt_traffic_change_work;
1451
1452         struct iwl_hw_params hw_params;
1453
1454         u32 inta_mask;
1455
1456         struct workqueue_struct *workqueue;
1457
1458         struct work_struct restart;
1459         struct work_struct scan_completed;
1460         struct work_struct rx_replenish;
1461         struct work_struct abort_scan;
1462
1463         struct work_struct beacon_update;
1464         struct iwl_rxon_context *beacon_ctx;
1465         struct sk_buff *beacon_skb;
1466
1467         struct work_struct tt_work;
1468         struct work_struct ct_enter;
1469         struct work_struct ct_exit;
1470         struct work_struct start_internal_scan;
1471         struct work_struct tx_flush;
1472         struct work_struct bt_full_concurrency;
1473         struct work_struct bt_runtime_config;
1474
1475         struct tasklet_struct irq_tasklet;
1476
1477         struct delayed_work scan_check;
1478
1479         /* TX Power */
1480         s8 tx_power_user_lmt;
1481         s8 tx_power_device_lmt;
1482         s8 tx_power_lmt_in_half_dbm; /* max tx power in half-dBm format */
1483         s8 tx_power_next;
1484
1485
1486 #ifdef CONFIG_IWLWIFI_DEBUG
1487         /* debugging info */
1488         u32 debug_level; /* per device debugging will override global
1489                             iwl_debug_level if set */
1490 #endif /* CONFIG_IWLWIFI_DEBUG */
1491 #ifdef CONFIG_IWLWIFI_DEBUGFS
1492         /* debugfs */
1493         u16 tx_traffic_idx;
1494         u16 rx_traffic_idx;
1495         u8 *tx_traffic;
1496         u8 *rx_traffic;
1497         struct dentry *debugfs_dir;
1498         u32 dbgfs_sram_offset, dbgfs_sram_len;
1499         bool disable_ht40;
1500 #endif /* CONFIG_IWLWIFI_DEBUGFS */
1501
1502         struct work_struct txpower_work;
1503         u32 disable_sens_cal;
1504         u32 disable_chain_noise_cal;
1505         struct work_struct run_time_calib_work;
1506         struct timer_list statistics_periodic;
1507         struct timer_list ucode_trace;
1508         struct timer_list watchdog;
1509
1510         struct iwl_event_log event_log;
1511
1512         struct led_classdev led;
1513         unsigned long blink_on, blink_off;
1514         bool led_registered;
1515 }; /*iwl_priv */
1516
1517 static inline void iwl_txq_ctx_activate(struct iwl_priv *priv, int txq_id)
1518 {
1519         set_bit(txq_id, &priv->txq_ctx_active_msk);
1520 }
1521
1522 static inline void iwl_txq_ctx_deactivate(struct iwl_priv *priv, int txq_id)
1523 {
1524         clear_bit(txq_id, &priv->txq_ctx_active_msk);
1525 }
1526
1527 #ifdef CONFIG_IWLWIFI_DEBUG
1528 /*
1529  * iwl_get_debug_level: Return active debug level for device
1530  *
1531  * Using sysfs it is possible to set per device debug level. This debug
1532  * level will be used if set, otherwise the global debug level which can be
1533  * set via module parameter is used.
1534  */
1535 static inline u32 iwl_get_debug_level(struct iwl_priv *priv)
1536 {
1537         if (priv->debug_level)
1538                 return priv->debug_level;
1539         else
1540                 return iwl_debug_level;
1541 }
1542 #else
1543 static inline u32 iwl_get_debug_level(struct iwl_priv *priv)
1544 {
1545         return iwl_debug_level;
1546 }
1547 #endif
1548
1549
1550 static inline struct ieee80211_hdr *iwl_tx_queue_get_hdr(struct iwl_priv *priv,
1551                                                          int txq_id, int idx)
1552 {
1553         if (priv->txq[txq_id].txb[idx].skb)
1554                 return (struct ieee80211_hdr *)priv->txq[txq_id].
1555                                 txb[idx].skb->data;
1556         return NULL;
1557 }
1558
1559 static inline struct iwl_rxon_context *
1560 iwl_rxon_ctx_from_vif(struct ieee80211_vif *vif)
1561 {
1562         struct iwl_vif_priv *vif_priv = (void *)vif->drv_priv;
1563
1564         return vif_priv->ctx;
1565 }
1566
1567 #define for_each_context(priv, ctx)                             \
1568         for (ctx = &priv->contexts[IWL_RXON_CTX_BSS];           \
1569              ctx < &priv->contexts[NUM_IWL_RXON_CTX]; ctx++)    \
1570                 if (priv->valid_contexts & BIT(ctx->ctxid))
1571
1572 static inline int iwl_is_associated(struct iwl_priv *priv,
1573                                     enum iwl_rxon_context_id ctxid)
1574 {
1575         return (priv->contexts[ctxid].active.filter_flags &
1576                         RXON_FILTER_ASSOC_MSK) ? 1 : 0;
1577 }
1578
1579 static inline int iwl_is_any_associated(struct iwl_priv *priv)
1580 {
1581         return iwl_is_associated(priv, IWL_RXON_CTX_BSS);
1582 }
1583
1584 static inline int iwl_is_associated_ctx(struct iwl_rxon_context *ctx)
1585 {
1586         return (ctx->active.filter_flags & RXON_FILTER_ASSOC_MSK) ? 1 : 0;
1587 }
1588
1589 static inline int is_channel_valid(const struct iwl_channel_info *ch_info)
1590 {
1591         if (ch_info == NULL)
1592                 return 0;
1593         return (ch_info->flags & EEPROM_CHANNEL_VALID) ? 1 : 0;
1594 }
1595
1596 static inline int is_channel_radar(const struct iwl_channel_info *ch_info)
1597 {
1598         return (ch_info->flags & EEPROM_CHANNEL_RADAR) ? 1 : 0;
1599 }
1600
1601 static inline u8 is_channel_a_band(const struct iwl_channel_info *ch_info)
1602 {
1603         return ch_info->band == IEEE80211_BAND_5GHZ;
1604 }
1605
1606 static inline u8 is_channel_bg_band(const struct iwl_channel_info *ch_info)
1607 {
1608         return ch_info->band == IEEE80211_BAND_2GHZ;
1609 }
1610
1611 static inline int is_channel_passive(const struct iwl_channel_info *ch)
1612 {
1613         return (!(ch->flags & EEPROM_CHANNEL_ACTIVE)) ? 1 : 0;
1614 }
1615
1616 static inline int is_channel_ibss(const struct iwl_channel_info *ch)
1617 {
1618         return ((ch->flags & EEPROM_CHANNEL_IBSS)) ? 1 : 0;
1619 }
1620
1621 static inline void __iwl_free_pages(struct iwl_priv *priv, struct page *page)
1622 {
1623         __free_pages(page, priv->hw_params.rx_page_order);
1624 }
1625
1626 static inline void iwl_free_pages(struct iwl_priv *priv, unsigned long page)
1627 {
1628         free_pages(page, priv->hw_params.rx_page_order);
1629 }
1630 #endif                          /* __iwl_dev_h__ */