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

   1 /******************************************************************************
   2  *
   3  * Copyright(c) 2003 - 2009 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  * Please use iwl-4965-hw.h for hardware-related definitions.
  30  */
  31
  32 #ifndef __iwl_dev_h__
  33 #define __iwl_dev_h__
  34
  35 #include <linux/pci.h> /* for struct pci_device_id */
  36 #include <linux/kernel.h>
  37 #include <net/ieee80211_radiotap.h>
  38
  39 #include "iwl-eeprom.h"
  40 #include "iwl-csr.h"
  41 #include "iwl-prph.h"
  42 #include "iwl-fh.h"
  43 #include "iwl-debug.h"
  44 #include "iwl-4965-hw.h"
  45 #include "iwl-3945-hw.h"
  46 #include "iwl-3945-led.h"
  47 #include "iwl-led.h"
  48 #include "iwl-power.h"
  49 #include "iwl-agn-rs.h"
  50
  51 /* configuration for the iwl4965 */
  52 extern struct iwl_cfg iwl4965_agn_cfg;
  53 extern struct iwl_cfg iwl5300_agn_cfg;
  54 extern struct iwl_cfg iwl5100_agn_cfg;
  55 extern struct iwl_cfg iwl5350_agn_cfg;
  56 extern struct iwl_cfg iwl5100_bg_cfg;
  57 extern struct iwl_cfg iwl5100_abg_cfg;
  58 extern struct iwl_cfg iwl5150_agn_cfg;
  59 extern struct iwl_cfg iwl6000_2ag_cfg;
  60 extern struct iwl_cfg iwl6000_2agn_cfg;
  61 extern struct iwl_cfg iwl6000_3agn_cfg;
  62 extern struct iwl_cfg iwl6050_2agn_cfg;
  63 extern struct iwl_cfg iwl6050_3agn_cfg;
  64 extern struct iwl_cfg iwl1000_bgn_cfg;
  65
  66 /* shared structures from iwl-5000.c */
  67 extern struct iwl_mod_params iwl50_mod_params;
  68 extern struct iwl_ops iwl5000_ops;
  69 extern struct iwl_lib_ops iwl5000_lib;
  70 extern struct iwl_hcmd_ops iwl5000_hcmd;
  71 extern struct iwl_hcmd_utils_ops iwl5000_hcmd_utils;
  72
  73 /* shared functions from iwl-5000.c */
  74 extern u16 iwl5000_get_hcmd_size(u8 cmd_id, u16 len);
  75 extern u16 iwl5000_build_addsta_hcmd(const struct iwl_addsta_cmd *cmd,
  76                                      u8 *data);
  77 extern void iwl5000_rts_tx_cmd_flag(struct ieee80211_tx_info *info,
  78                                     __le32 *tx_flags);
  79 extern int iwl5000_calc_rssi(struct iwl_priv *priv,
  80                              struct iwl_rx_phy_res *rx_resp);
  81
  82 /* CT-KILL constants */
  83 #define CT_KILL_THRESHOLD       110 /* in Celsius */
  84
  85 /* Default noise level to report when noise measurement is not available.
  86  *   This may be because we're:
  87  *   1)  Not associated (4965, no beacon statistics being sent to driver)
  88  *   2)  Scanning (noise measurement does not apply to associated channel)
  89  *   3)  Receiving CCK (3945 delivers noise info only for OFDM frames)
  90  * Use default noise value of -127 ... this is below the range of measurable
  91  *   Rx dBm for either 3945 or 4965, so it can indicate "unmeasurable" to user.
  92  *   Also, -127 works better than 0 when averaging frames with/without
  93  *   noise info (e.g. averaging might be done in app); measured dBm values are
  94  *   always negative ... using a negative value as the default keeps all
  95  *   averages within an s8's (used in some apps) range of negative values. */
  96 #define IWL_NOISE_MEAS_NOT_AVAILABLE (-127)
  97
  98 /*
  99  * RTS threshold here is total size [2347] minus 4 FCS bytes
 100  * Per spec:
 101  *   a value of 0 means RTS on all data/management packets
 102  *   a value > max MSDU size means no RTS
 103  * else RTS for data/management frames where MPDU is larger
 104  *   than RTS value.
 105  */
 106 #define DEFAULT_RTS_THRESHOLD     2347U
 107 #define MIN_RTS_THRESHOLD         0U
 108 #define MAX_RTS_THRESHOLD         2347U
 109 #define MAX_MSDU_SIZE             2304U
 110 #define MAX_MPDU_SIZE             2346U
 111 #define DEFAULT_BEACON_INTERVAL   100U
 112 #define DEFAULT_SHORT_RETRY_LIMIT 7U
 113 #define DEFAULT_LONG_RETRY_LIMIT  4U
 114
 115 struct iwl_rx_mem_buffer {
 116         dma_addr_t real_dma_addr;
 117         dma_addr_t aligned_dma_addr;
 118         struct sk_buff *skb;
 119         struct list_head list;
 120 };
 121
 122 /*
 123  * Generic queue structure
 124  *
 125  * Contains common data for Rx and Tx queues
 126  */
 127 struct iwl_queue {
 128         int n_bd;              /* number of BDs in this queue */
 129         int write_ptr;       /* 1-st empty entry (index) host_w*/
 130         int read_ptr;         /* last used entry (index) host_r*/
 131         dma_addr_t dma_addr;   /* physical addr for BD's */
 132         int n_window;          /* safe queue window */
 133         u32 id;
 134         int low_mark;          /* low watermark, resume queue if free
 135                                 * space more than this */
 136         int high_mark;         /* high watermark, stop queue if free
 137                                 * space less than this */
 138 } __attribute__ ((packed));
 139
 140 /* One for each TFD */
 141 struct iwl_tx_info {
 142         struct sk_buff *skb[IWL_NUM_OF_TBS - 1];
 143 };
 144
 145 /**
 146  * struct iwl_tx_queue - Tx Queue for DMA
 147  * @q: generic Rx/Tx queue descriptor
 148  * @bd: base of circular buffer of TFDs
 149  * @cmd: array of command/Tx buffers
 150  * @dma_addr_cmd: physical address of cmd/tx buffer array
 151  * @txb: array of per-TFD driver data
 152  * @need_update: indicates need to update read/write index
 153  * @sched_retry: indicates queue is high-throughput aggregation (HT AGG) enabled
 154  *
 155  * A Tx queue consists of circular buffer of BDs (a.k.a. TFDs, transmit frame
 156  * descriptors) and required locking structures.
 157  */
 158 #define TFD_TX_CMD_SLOTS 256
 159 #define TFD_CMD_SLOTS 32
 160
 161 struct iwl_tx_queue {
 162         struct iwl_queue q;
 163         void *tfds;
 164         struct iwl_cmd *cmd[TFD_TX_CMD_SLOTS];
 165         struct iwl_tx_info *txb;
 166         u8 need_update;
 167         u8 sched_retry;
 168         u8 active;
 169         u8 swq_id;
 170 };
 171
 172 #define IWL_NUM_SCAN_RATES         (2)
 173
 174 struct iwl4965_channel_tgd_info {
 175         u8 type;
 176         s8 max_power;
 177 };
 178
 179 struct iwl4965_channel_tgh_info {
 180         s64 last_radar_time;
 181 };
 182
 183 #define IWL4965_MAX_RATE (33)
 184
 185 struct iwl3945_clip_group {
 186         /* maximum power level to prevent clipping for each rate, derived by
 187          *   us from this band's saturation power in EEPROM */
 188         const s8 clip_powers[IWL_MAX_RATES];
 189 };
 190
 191 /* current Tx power values to use, one for each rate for each channel.
 192  * requested power is limited by:
 193  * -- regulatory EEPROM limits for this channel
 194  * -- hardware capabilities (clip-powers)
 195  * -- spectrum management
 196  * -- user preference (e.g. iwconfig)
 197  * when requested power is set, base power index must also be set. */
 198 struct iwl3945_channel_power_info {
 199         struct iwl3945_tx_power tpc;    /* actual radio and DSP gain settings */
 200         s8 power_table_index;   /* actual (compenst'd) index into gain table */
 201         s8 base_power_index;    /* gain index for power at factory temp. */
 202         s8 requested_power;     /* power (dBm) requested for this chnl/rate */
 203 };
 204
 205 /* current scan Tx power values to use, one for each scan rate for each
 206  * channel. */
 207 struct iwl3945_scan_power_info {
 208         struct iwl3945_tx_power tpc;    /* actual radio and DSP gain settings */
 209         s8 power_table_index;   /* actual (compenst'd) index into gain table */
 210         s8 requested_power;     /* scan pwr (dBm) requested for chnl/rate */
 211 };
 212
 213 /*
 214  * One for each channel, holds all channel setup data
 215  * Some of the fields (e.g. eeprom and flags/max_power_avg) are redundant
 216  *     with one another!
 217  */
 218 struct iwl_channel_info {
 219         struct iwl4965_channel_tgd_info tgd;
 220         struct iwl4965_channel_tgh_info tgh;
 221         struct iwl_eeprom_channel eeprom;       /* EEPROM regulatory limit */
 222         struct iwl_eeprom_channel fat_eeprom;   /* EEPROM regulatory limit for
 223                                                  * FAT channel */
 224
 225         u8 channel;       /* channel number */
 226         u8 flags;         /* flags copied from EEPROM */
 227         s8 max_power_avg; /* (dBm) regul. eeprom, normal Tx, any rate */
 228         s8 curr_txpow;    /* (dBm) regulatory/spectrum/user (not h/w) limit */
 229         s8 min_power;     /* always 0 */
 230         s8 scan_power;    /* (dBm) regul. eeprom, direct scans, any rate */
 231
 232         u8 group_index;   /* 0-4, maps channel to group1/2/3/4/5 */
 233         u8 band_index;    /* 0-4, maps channel to band1/2/3/4/5 */
 234         enum ieee80211_band band;
 235
 236         /* FAT channel info */
 237         s8 fat_max_power_avg;   /* (dBm) regul. eeprom, normal Tx, any rate */
 238         s8 fat_curr_txpow;      /* (dBm) regulatory/spectrum/user (not h/w) */
 239         s8 fat_min_power;       /* always 0 */
 240         s8 fat_scan_power;      /* (dBm) eeprom, direct scans, any rate */
 241         u8 fat_flags;           /* flags copied from EEPROM */
 242         u8 fat_extension_channel; /* HT_IE_EXT_CHANNEL_* */
 243
 244         /* Radio/DSP gain settings for each "normal" data Tx rate.
 245          * These include, in addition to RF and DSP gain, a few fields for
 246          *   remembering/modifying gain settings (indexes). */
 247         struct iwl3945_channel_power_info power_info[IWL4965_MAX_RATE];
 248
 249         /* Radio/DSP gain settings for each scan rate, for directed scans. */
 250         struct iwl3945_scan_power_info scan_pwr_info[IWL_NUM_SCAN_RATES];
 251 };
 252
 253 #define IWL_TX_FIFO_AC0 0
 254 #define IWL_TX_FIFO_AC1 1
 255 #define IWL_TX_FIFO_AC2 2
 256 #define IWL_TX_FIFO_AC3 3
 257 #define IWL_TX_FIFO_HCCA_1      5
 258 #define IWL_TX_FIFO_HCCA_2      6
 259 #define IWL_TX_FIFO_NONE        7
 260
 261 /* Minimum number of queues. MAX_NUM is defined in hw specific files */
 262 #define IWL_MIN_NUM_QUEUES      4
 263
 264 /* Power management (not Tx power) structures */
 265
 266 enum iwl_pwr_src {
 267         IWL_PWR_SRC_VMAIN,
 268         IWL_PWR_SRC_VAUX,
 269 };
 270
 271 #define IEEE80211_DATA_LEN              2304
 272 #define IEEE80211_4ADDR_LEN             30
 273 #define IEEE80211_HLEN                  (IEEE80211_4ADDR_LEN)
 274 #define IEEE80211_FRAME_LEN             (IEEE80211_DATA_LEN + IEEE80211_HLEN)
 275
 276 struct iwl_frame {
 277         union {
 278                 struct ieee80211_hdr frame;
 279                 struct iwl_tx_beacon_cmd beacon;
 280                 u8 raw[IEEE80211_FRAME_LEN];
 281                 u8 cmd[360];
 282         } u;
 283         struct list_head list;
 284 };
 285
 286 #define SEQ_TO_SN(seq) (((seq) & IEEE80211_SCTL_SEQ) >> 4)
 287 #define SN_TO_SEQ(ssn) (((ssn) << 4) & IEEE80211_SCTL_SEQ)
 288 #define MAX_SN ((IEEE80211_SCTL_SEQ) >> 4)
 289
 290 enum {
 291         CMD_SYNC = 0,
 292         CMD_SIZE_NORMAL = 0,
 293         CMD_NO_SKB = 0,
 294         CMD_SIZE_HUGE = (1 << 0),
 295         CMD_ASYNC = (1 << 1),
 296         CMD_WANT_SKB = (1 << 2),
 297 };
 298
 299 struct iwl_cmd;
 300 struct iwl_priv;
 301
 302 struct iwl_cmd_meta {
 303         struct iwl_cmd_meta *source;
 304         union {
 305                 struct sk_buff *skb;
 306                 int (*callback)(struct iwl_priv *priv,
 307                                 struct iwl_cmd *cmd, struct sk_buff *skb);
 308         } __attribute__ ((packed)) u;
 309
 310         /* The CMD_SIZE_HUGE flag bit indicates that the command
 311          * structure is stored at the end of the shared queue memory. */
 312         u32 flags;
 313         DECLARE_PCI_UNMAP_ADDR(mapping)
 314         DECLARE_PCI_UNMAP_LEN(len)
 315 } __attribute__ ((packed));
 316
 317 #define IWL_CMD_MAX_PAYLOAD 320
 318
 319 /**
 320  * struct iwl_cmd
 321  *
 322  * For allocation of the command and tx queues, this establishes the overall
 323  * size of the largest command we send to uCode, except for a scan command
 324  * (which is relatively huge; space is allocated separately).
 325  */
 326 struct iwl_cmd {
 327         struct iwl_cmd_meta meta;       /* driver data */
 328         struct iwl_cmd_header hdr;      /* uCode API */
 329         union {
 330                 u32 flags;
 331                 u8 val8;
 332                 u16 val16;
 333                 u32 val32;
 334                 struct iwl_tx_cmd tx;
 335                 u8 payload[IWL_CMD_MAX_PAYLOAD];
 336         } __attribute__ ((packed)) cmd;
 337 } __attribute__ ((packed));
 338
 339
 340 struct iwl_host_cmd {
 341         u8 id;
 342         u16 len;
 343         struct iwl_cmd_meta meta;
 344         const void *data;
 345 };
 346
 347 #define TFD_MAX_PAYLOAD_SIZE (sizeof(struct iwl_cmd) - \
 348                               sizeof(struct iwl_cmd_meta))
 349
 350 /*
 351  * RX related structures and functions
 352  */
 353 #define RX_FREE_BUFFERS 64
 354 #define RX_LOW_WATERMARK 8
 355
 356 #define SUP_RATE_11A_MAX_NUM_CHANNELS  8
 357 #define SUP_RATE_11B_MAX_NUM_CHANNELS  4
 358 #define SUP_RATE_11G_MAX_NUM_CHANNELS  12
 359
 360 /**
 361  * struct iwl_rx_queue - Rx queue
 362  * @bd: driver's pointer to buffer of receive buffer descriptors (rbd)
 363  * @dma_addr: bus address of buffer of receive buffer descriptors (rbd)
 364  * @read: Shared index to newest available Rx buffer
 365  * @write: Shared index to oldest written Rx packet
 366  * @free_count: Number of pre-allocated buffers in rx_free
 367  * @rx_free: list of free SKBs for use
 368  * @rx_used: List of Rx buffers with no SKB
 369  * @need_update: flag to indicate we need to update read/write index
 370  * @rb_stts: driver's pointer to receive buffer status
 371  * @rb_stts_dma: bus address of receive buffer status
 372  *
 373  * NOTE:  rx_free and rx_used are used as a FIFO for iwl_rx_mem_buffers
 374  */
 375 struct iwl_rx_queue {
 376         __le32 *bd;
 377         dma_addr_t dma_addr;
 378         struct iwl_rx_mem_buffer pool[RX_QUEUE_SIZE + RX_FREE_BUFFERS];
 379         struct iwl_rx_mem_buffer *queue[RX_QUEUE_SIZE];
 380         u32 read;
 381         u32 write;
 382         u32 free_count;
 383         u32 write_actual;
 384         struct list_head rx_free;
 385         struct list_head rx_used;
 386         int need_update;
 387         struct iwl_rb_status *rb_stts;
 388         dma_addr_t rb_stts_dma;
 389         spinlock_t lock;
 390 };
 391
 392 #define IWL_SUPPORTED_RATES_IE_LEN         8
 393
 394 #define MAX_TID_COUNT        9
 395
 396 #define IWL_INVALID_RATE     0xFF
 397 #define IWL_INVALID_VALUE    -1
 398
 399 /**
 400  * struct iwl_ht_agg -- aggregation status while waiting for block-ack
 401  * @txq_id: Tx queue used for Tx attempt
 402  * @frame_count: # frames attempted by Tx command
 403  * @wait_for_ba: Expect block-ack before next Tx reply
 404  * @start_idx: Index of 1st Transmit Frame Descriptor (TFD) in Tx window
 405  * @bitmap0: Low order bitmap, one bit for each frame pending ACK in Tx window
 406  * @bitmap1: High order, one bit for each frame pending ACK in Tx window
 407  * @rate_n_flags: Rate at which Tx was attempted
 408  *
 409  * If REPLY_TX indicates that aggregation was attempted, driver must wait
 410  * for block ack (REPLY_COMPRESSED_BA).  This struct stores tx reply info
 411  * until block ack arrives.
 412  */
 413 struct iwl_ht_agg {
 414         u16 txq_id;
 415         u16 frame_count;
 416         u16 wait_for_ba;
 417         u16 start_idx;
 418         u64 bitmap;
 419         u32 rate_n_flags;
 420 #define IWL_AGG_OFF 0
 421 #define IWL_AGG_ON 1
 422 #define IWL_EMPTYING_HW_QUEUE_ADDBA 2
 423 #define IWL_EMPTYING_HW_QUEUE_DELBA 3
 424         u8 state;
 425 };
 426
 427
 428 struct iwl_tid_data {
 429         u16 seq_number;
 430         u16 tfds_in_queue;
 431         struct iwl_ht_agg agg;
 432 };
 433
 434 struct iwl_hw_key {
 435         enum ieee80211_key_alg alg;
 436         int keylen;
 437         u8 keyidx;
 438         u8 key[32];
 439 };
 440
 441 union iwl_ht_rate_supp {
 442         u16 rates;
 443         struct {
 444                 u8 siso_rate;
 445                 u8 mimo_rate;
 446         };
 447 };
 448
 449 #define CFG_HT_RX_AMPDU_FACTOR_DEF  (0x3)
 450 #define CFG_HT_MPDU_DENSITY_2USEC   (0x5)
 451 #define CFG_HT_MPDU_DENSITY_DEF CFG_HT_MPDU_DENSITY_2USEC
 452
 453 struct iwl_ht_info {
 454         /* self configuration data */
 455         u8 is_ht;
 456         u8 supported_chan_width;
 457         u8 sm_ps;
 458         u8 is_green_field;
 459         u8 sgf;                 /* HT_SHORT_GI_* short guard interval */
 460         u8 max_amsdu_size;
 461         u8 ampdu_factor;
 462         u8 mpdu_density;
 463         struct ieee80211_mcs_info mcs;
 464         /* BSS related data */
 465         u8 extension_chan_offset;
 466         u8 tx_chan_width;
 467         u8 ht_protection;
 468         u8 non_GF_STA_present;
 469 };
 470
 471 union iwl_qos_capabity {
 472         struct {
 473                 u8 edca_count:4;        /* bit 0-3 */
 474                 u8 q_ack:1;             /* bit 4 */
 475                 u8 queue_request:1;     /* bit 5 */
 476                 u8 txop_request:1;      /* bit 6 */
 477                 u8 reserved:1;          /* bit 7 */
 478         } q_AP;
 479         struct {
 480                 u8 acvo_APSD:1;         /* bit 0 */
 481                 u8 acvi_APSD:1;         /* bit 1 */
 482                 u8 ac_bk_APSD:1;        /* bit 2 */
 483                 u8 ac_be_APSD:1;        /* bit 3 */
 484                 u8 q_ack:1;             /* bit 4 */
 485                 u8 max_len:2;           /* bit 5-6 */
 486                 u8 more_data_ack:1;     /* bit 7 */
 487         } q_STA;
 488         u8 val;
 489 };
 490
 491 /* QoS structures */
 492 struct iwl_qos_info {
 493         int qos_active;
 494         union iwl_qos_capabity qos_cap;
 495         struct iwl_qosparam_cmd def_qos_parm;
 496 };
 497
 498 #define STA_PS_STATUS_WAKE             0
 499 #define STA_PS_STATUS_SLEEP            1
 500
 501
 502 struct iwl3945_station_entry {
 503         struct iwl3945_addsta_cmd sta;
 504         struct iwl_tid_data tid[MAX_TID_COUNT];
 505         u8 used;
 506         u8 ps_status;
 507         struct iwl_hw_key keyinfo;
 508 };
 509
 510 struct iwl_station_entry {
 511         struct iwl_addsta_cmd sta;
 512         struct iwl_tid_data tid[MAX_TID_COUNT];
 513         u8 used;
 514         u8 ps_status;
 515         struct iwl_hw_key keyinfo;
 516 };
 517
 518 /* one for each uCode image (inst/data, boot/init/runtime) */
 519 struct fw_desc {
 520         void *v_addr;           /* access by driver */
 521         dma_addr_t p_addr;      /* access by card's busmaster DMA */
 522         u32 len;                /* bytes */
 523 };
 524
 525 /* uCode file layout */
 526 struct iwl_ucode {
 527         __le32 ver;             /* major/minor/API/serial */
 528         __le32 inst_size;       /* bytes of runtime instructions */
 529         __le32 data_size;       /* bytes of runtime data */
 530         __le32 init_size;       /* bytes of initialization instructions */
 531         __le32 init_data_size;  /* bytes of initialization data */
 532         __le32 boot_size;       /* bytes of bootstrap instructions */
 533         u8 data[0];             /* data in same order as "size" elements */
 534 };
 535
 536 struct iwl4965_ibss_seq {
 537         u8 mac[ETH_ALEN];
 538         u16 seq_num;
 539         u16 frag_num;
 540         unsigned long packet_time;
 541         struct list_head list;
 542 };
 543
 544 struct iwl_sensitivity_ranges {
 545         u16 min_nrg_cck;
 546         u16 max_nrg_cck;
 547
 548         u16 nrg_th_cck;
 549         u16 nrg_th_ofdm;
 550
 551         u16 auto_corr_min_ofdm;
 552         u16 auto_corr_min_ofdm_mrc;
 553         u16 auto_corr_min_ofdm_x1;
 554         u16 auto_corr_min_ofdm_mrc_x1;
 555
 556         u16 auto_corr_max_ofdm;
 557         u16 auto_corr_max_ofdm_mrc;
 558         u16 auto_corr_max_ofdm_x1;
 559         u16 auto_corr_max_ofdm_mrc_x1;
 560
 561         u16 auto_corr_max_cck;
 562         u16 auto_corr_max_cck_mrc;
 563         u16 auto_corr_min_cck;
 564         u16 auto_corr_min_cck_mrc;
 565 };
 566
 567
 568 #define KELVIN_TO_CELSIUS(x) ((x)-273)
 569 #define CELSIUS_TO_KELVIN(x) ((x)+273)
 570
 571
 572 /**
 573  * struct iwl_hw_params
 574  * @max_txq_num: Max # Tx queues supported
 575  * @dma_chnl_num: Number of Tx DMA/FIFO channels
 576  * @scd_bc_tbls_size: size of scheduler byte count tables
 577  * @tfd_size: TFD size
 578  * @tx/rx_chains_num: Number of TX/RX chains
 579  * @valid_tx/rx_ant: usable antennas
 580  * @max_rxq_size: Max # Rx frames in Rx queue (must be power-of-2)
 581  * @max_rxq_log: Log-base-2 of max_rxq_size
 582  * @rx_buf_size: Rx buffer size
 583  * @rx_wrt_ptr_reg: FH{39}_RSCSR_CHNL0_WPTR
 584  * @max_stations:
 585  * @bcast_sta_id:
 586  * @fat_channel: is 40MHz width possible in band 2.4
 587  * BIT(IEEE80211_BAND_5GHZ) BIT(IEEE80211_BAND_5GHZ)
 588  * @sw_crypto: 0 for hw, 1 for sw
 589  * @max_xxx_size: for ucode uses
 590  * @ct_kill_threshold: temperature threshold
 591  * @calib_init_cfg: setup initial calibrations for the hw
 592  * @struct iwl_sensitivity_ranges: range of sensitivity values
 593  */
 594 struct iwl_hw_params {
 595         u8 max_txq_num;
 596         u8 dma_chnl_num;
 597         u16 scd_bc_tbls_size;
 598         u32 tfd_size;
 599         u8  tx_chains_num;
 600         u8  rx_chains_num;
 601         u8  valid_tx_ant;
 602         u8  valid_rx_ant;
 603         u16 max_rxq_size;
 604         u16 max_rxq_log;
 605         u32 rx_buf_size;
 606         u32 rx_wrt_ptr_reg;
 607         u32 max_pkt_size;
 608         u8  max_stations;
 609         u8  bcast_sta_id;
 610         u8 fat_channel;
 611         u8  max_beacon_itrvl;   /* in 1024 ms */
 612         u32 max_inst_size;
 613         u32 max_data_size;
 614         u32 max_bsm_size;
 615         u32 ct_kill_threshold; /* value in hw-dependent units */
 616         u32 calib_init_cfg;
 617         const struct iwl_sensitivity_ranges *sens;
 618 };
 619
 620
 621 /******************************************************************************
 622  *
 623  * Functions implemented in core module which are forward declared here
 624  * for use by iwl-[4-5].c
 625  *
 626  * NOTE:  The implementation of these functions are not hardware specific
 627  * which is why they are in the core module files.
 628  *
 629  * Naming convention --
 630  * iwl_         <-- Is part of iwlwifi
 631  * iwlXXXX_     <-- Hardware specific (implemented in iwl-XXXX.c for XXXX)
 632  * iwl4965_bg_      <-- Called from work queue context
 633  * iwl4965_mac_     <-- mac80211 callback
 634  *
 635  ****************************************************************************/
 636 extern void iwl_update_chain_flags(struct iwl_priv *priv);
 637 extern int iwl_set_pwr_src(struct iwl_priv *priv, enum iwl_pwr_src src);
 638 extern const u8 iwl_bcast_addr[ETH_ALEN];
 639 extern int iwl_rxq_stop(struct iwl_priv *priv);
 640 extern void iwl_txq_ctx_stop(struct iwl_priv *priv);
 641 extern int iwl_queue_space(const struct iwl_queue *q);
 642 static inline int iwl_queue_used(const struct iwl_queue *q, int i)
 643 {
 644         return q->write_ptr > q->read_ptr ?
 645                 (i >= q->read_ptr && i < q->write_ptr) :
 646                 !(i < q->read_ptr && i >= q->write_ptr);
 647 }
 648
 649
 650 static inline u8 get_cmd_index(struct iwl_queue *q, u32 index, int is_huge)
 651 {
 652         /* This is for scan command, the big buffer at end of command array */
 653         if (is_huge)
 654                 return q->n_window;     /* must be power of 2 */
 655
 656         /* Otherwise, use normal size buffers */
 657         return index & (q->n_window - 1);
 658 }
 659
 660
 661 struct iwl_dma_ptr {
 662         dma_addr_t dma;
 663         void *addr;
 664         size_t size;
 665 };
 666
 667 #define HT_SHORT_GI_20MHZ       (1 << 0)
 668 #define HT_SHORT_GI_40MHZ       (1 << 1)
 669
 670 #define IWL_CHANNEL_WIDTH_20MHZ   0
 671 #define IWL_CHANNEL_WIDTH_40MHZ   1
 672
 673 #define IWL_OPERATION_MODE_AUTO     0
 674 #define IWL_OPERATION_MODE_HT_ONLY  1
 675 #define IWL_OPERATION_MODE_MIXED    2
 676 #define IWL_OPERATION_MODE_20MHZ    3
 677
 678 #define IWL_TX_CRC_SIZE 4
 679 #define IWL_TX_DELIMITER_SIZE 4
 680
 681 #define TX_POWER_IWL_ILLEGAL_VOLTAGE -10000
 682
 683 /* Sensitivity and chain noise calibration */
 684 #define INITIALIZATION_VALUE            0xFFFF
 685 #define CAL_NUM_OF_BEACONS              20
 686 #define MAXIMUM_ALLOWED_PATHLOSS        15
 687
 688 #define CHAIN_NOISE_MAX_DELTA_GAIN_CODE 3
 689
 690 #define MAX_FA_OFDM  50
 691 #define MIN_FA_OFDM  5
 692 #define MAX_FA_CCK   50
 693 #define MIN_FA_CCK   5
 694
 695 #define AUTO_CORR_STEP_OFDM       1
 696
 697 #define AUTO_CORR_STEP_CCK     3
 698 #define AUTO_CORR_MAX_TH_CCK   160
 699
 700 #define NRG_DIFF               2
 701 #define NRG_STEP_CCK           2
 702 #define NRG_MARGIN             8
 703 #define MAX_NUMBER_CCK_NO_FA 100
 704
 705 #define AUTO_CORR_CCK_MIN_VAL_DEF    (125)
 706
 707 #define CHAIN_A             0
 708 #define CHAIN_B             1
 709 #define CHAIN_C             2
 710 #define CHAIN_NOISE_DELTA_GAIN_INIT_VAL 4
 711 #define ALL_BAND_FILTER                 0xFF00
 712 #define IN_BAND_FILTER                  0xFF
 713 #define MIN_AVERAGE_NOISE_MAX_VALUE     0xFFFFFFFF
 714
 715 #define NRG_NUM_PREV_STAT_L     20
 716 #define NUM_RX_CHAINS           3
 717
 718 enum iwl4965_false_alarm_state {
 719         IWL_FA_TOO_MANY = 0,
 720         IWL_FA_TOO_FEW = 1,
 721         IWL_FA_GOOD_RANGE = 2,
 722 };
 723
 724 enum iwl4965_chain_noise_state {
 725         IWL_CHAIN_NOISE_ALIVE = 0,  /* must be 0 */
 726         IWL_CHAIN_NOISE_ACCUMULATE,
 727         IWL_CHAIN_NOISE_CALIBRATED,
 728         IWL_CHAIN_NOISE_DONE,
 729 };
 730
 731 enum iwl4965_calib_enabled_state {
 732         IWL_CALIB_DISABLED = 0,  /* must be 0 */
 733         IWL_CALIB_ENABLED = 1,
 734 };
 735
 736
 737 /*
 738  * enum iwl_calib
 739  * defines the order in which results of initial calibrations
 740  * should be sent to the runtime uCode
 741  */
 742 enum iwl_calib {
 743         IWL_CALIB_XTAL,
 744         IWL_CALIB_DC,
 745         IWL_CALIB_LO,
 746         IWL_CALIB_TX_IQ,
 747         IWL_CALIB_TX_IQ_PERD,
 748         IWL_CALIB_BASE_BAND,
 749         IWL_CALIB_MAX
 750 };
 751
 752 /* Opaque calibration results */
 753 struct iwl_calib_result {
 754         void *buf;
 755         size_t buf_len;
 756 };
 757
 758 enum ucode_type {
 759         UCODE_NONE = 0,
 760         UCODE_INIT,
 761         UCODE_RT
 762 };
 763
 764 /* Sensitivity calib data */
 765 struct iwl_sensitivity_data {
 766         u32 auto_corr_ofdm;
 767         u32 auto_corr_ofdm_mrc;
 768         u32 auto_corr_ofdm_x1;
 769         u32 auto_corr_ofdm_mrc_x1;
 770         u32 auto_corr_cck;
 771         u32 auto_corr_cck_mrc;
 772
 773         u32 last_bad_plcp_cnt_ofdm;
 774         u32 last_fa_cnt_ofdm;
 775         u32 last_bad_plcp_cnt_cck;
 776         u32 last_fa_cnt_cck;
 777
 778         u32 nrg_curr_state;
 779         u32 nrg_prev_state;
 780         u32 nrg_value[10];
 781         u8  nrg_silence_rssi[NRG_NUM_PREV_STAT_L];
 782         u32 nrg_silence_ref;
 783         u32 nrg_energy_idx;
 784         u32 nrg_silence_idx;
 785         u32 nrg_th_cck;
 786         s32 nrg_auto_corr_silence_diff;
 787         u32 num_in_cck_no_fa;
 788         u32 nrg_th_ofdm;
 789 };
 790
 791 /* Chain noise (differential Rx gain) calib data */
 792 struct iwl_chain_noise_data {
 793         u32 active_chains;
 794         u32 chain_noise_a;
 795         u32 chain_noise_b;
 796         u32 chain_noise_c;
 797         u32 chain_signal_a;
 798         u32 chain_signal_b;
 799         u32 chain_signal_c;
 800         u16 beacon_count;
 801         u8 disconn_array[NUM_RX_CHAINS];
 802         u8 delta_gain_code[NUM_RX_CHAINS];
 803         u8 radio_write;
 804         u8 state;
 805 };
 806
 807 #define EEPROM_SEM_TIMEOUT 10           /* milliseconds */
 808 #define EEPROM_SEM_RETRY_LIMIT 1000     /* number of attempts (not time) */
 809
 810
 811 enum {
 812         MEASUREMENT_READY = (1 << 0),
 813         MEASUREMENT_ACTIVE = (1 << 1),
 814 };
 815
 816 enum iwl_nvm_type {
 817         NVM_DEVICE_TYPE_EEPROM = 0,
 818         NVM_DEVICE_TYPE_OTP,
 819 };
 820
 821 /* interrupt statistics */
 822 struct isr_statistics {
 823         u32 hw;
 824         u32 sw;
 825         u32 sw_err;
 826         u32 sch;
 827         u32 alive;
 828         u32 rfkill;
 829         u32 ctkill;
 830         u32 wakeup;
 831         u32 rx;
 832         u32 rx_handlers[REPLY_MAX];
 833         u32 tx;
 834         u32 unhandled;
 835 };
 836
 837 #define IWL_MAX_NUM_QUEUES      20 /* FIXME: do dynamic allocation */
 838
 839 struct iwl_priv {
 840
 841         /* ieee device used by generic ieee processing code */
 842         struct ieee80211_hw *hw;
 843         struct ieee80211_channel *ieee_channels;
 844         struct ieee80211_rate *ieee_rates;
 845         struct iwl_cfg *cfg;
 846
 847         /* temporary frame storage list */
 848         struct list_head free_frames;
 849         int frames_count;
 850
 851         enum ieee80211_band band;
 852         int alloc_rxb_skb;
 853
 854         void (*rx_handlers[REPLY_MAX])(struct iwl_priv *priv,
 855                                        struct iwl_rx_mem_buffer *rxb);
 856
 857         struct ieee80211_supported_band bands[IEEE80211_NUM_BANDS];
 858
 859 #if defined(CONFIG_IWLWIFI_SPECTRUM_MEASUREMENT) || defined(CONFIG_IWL3945_SPECTRUM_MEASUREMENT)
 860         /* spectrum measurement report caching */
 861         struct iwl_spectrum_notification measure_report;
 862         u8 measurement_status;
 863 #endif
 864         /* ucode beacon time */
 865         u32 ucode_beacon_time;
 866
 867         /* we allocate array of iwl4965_channel_info for NIC's valid channels.
 868          *    Access via channel # using indirect index array */
 869         struct iwl_channel_info *channel_info;  /* channel info array */
 870         u8 channel_count;       /* # of channels */
 871
 872         /* each calibration channel group in the EEPROM has a derived
 873          * clip setting for each rate. 3945 only.*/
 874         const struct iwl3945_clip_group clip39_groups[5];
 875
 876         /* thermal calibration */
 877         s32 temperature;        /* degrees Kelvin */
 878         s32 last_temperature;
 879
 880         /* init calibration results */
 881         struct iwl_calib_result calib_results[IWL_CALIB_MAX];
 882
 883         /* Scan related variables */
 884         unsigned long last_scan_jiffies;
 885         unsigned long next_scan_jiffies;
 886         unsigned long scan_start;
 887         unsigned long scan_pass_start;
 888         unsigned long scan_start_tsf;
 889         void *scan;
 890         int scan_bands;
 891         struct cfg80211_scan_request *scan_request;
 892         u8 scan_tx_ant[IEEE80211_NUM_BANDS];
 893         u8 mgmt_tx_ant;
 894
 895         /* spinlock */
 896         spinlock_t lock;        /* protect general shared data */
 897         spinlock_t hcmd_lock;   /* protect hcmd */
 898         spinlock_t reg_lock;    /* protect hw register access */
 899         struct mutex mutex;
 900
 901         /* basic pci-network driver stuff */
 902         struct pci_dev *pci_dev;
 903
 904         /* pci hardware address support */
 905         void __iomem *hw_base;
 906         u32  hw_rev;
 907         u32  hw_wa_rev;
 908         u8   rev_id;
 909
 910         /* uCode images, save to reload in case of failure */
 911         u32 ucode_ver;                  /* version of ucode, copy of
 912                                            iwl_ucode.ver */
 913         struct fw_desc ucode_code;      /* runtime inst */
 914         struct fw_desc ucode_data;      /* runtime data original */
 915         struct fw_desc ucode_data_backup;       /* runtime data save/restore */
 916         struct fw_desc ucode_init;      /* initialization inst */
 917         struct fw_desc ucode_init_data; /* initialization data */
 918         struct fw_desc ucode_boot;      /* bootstrap inst */
 919         enum ucode_type ucode_type;
 920         u8 ucode_write_complete;        /* the image write is complete */
 921
 922
 923         struct iwl_rxon_time_cmd rxon_timing;
 924
 925         /* We declare this const so it can only be
 926          * changed via explicit cast within the
 927          * routines that actually update the physical
 928          * hardware */
 929         const struct iwl_rxon_cmd active_rxon;
 930         struct iwl_rxon_cmd staging_rxon;
 931
 932         struct iwl_rxon_cmd recovery_rxon;
 933
 934         /* 1st responses from initialize and runtime uCode images.
 935          * 4965's initialize alive response contains some calibration data. */
 936         struct iwl_init_alive_resp card_alive_init;
 937         struct iwl_alive_resp card_alive;
 938
 939 #ifdef CONFIG_IWLWIFI_LEDS
 940         unsigned long last_blink_time;
 941         u8 last_blink_rate;
 942         u8 allow_blinking;
 943         u64 led_tpt;
 944         struct iwl_led led[IWL_LED_TRG_MAX];
 945         unsigned int rxtxpackets;
 946 #endif
 947         u16 active_rate;
 948         u16 active_rate_basic;
 949
 950         u8 assoc_station_added;
 951         u8 start_calib;
 952         struct iwl_sensitivity_data sensitivity_data;
 953         struct iwl_chain_noise_data chain_noise_data;
 954         __le16 sensitivity_tbl[HD_TABLE_SIZE];
 955
 956         struct iwl_ht_info current_ht_config;
 957         u8 last_phy_res[100];
 958
 959         /* Rate scaling data */
 960         s8 data_retry_limit;
 961         u8 retry_rate;
 962
 963         wait_queue_head_t wait_command_queue;
 964
 965         int activity_timer_active;
 966
 967         /* Rx and Tx DMA processing queues */
 968         struct iwl_rx_queue rxq;
 969         struct iwl_tx_queue txq[IWL_MAX_NUM_QUEUES];
 970         unsigned long txq_ctx_active_msk;
 971         struct iwl_dma_ptr  kw; /* keep warm address */
 972         struct iwl_dma_ptr  scd_bc_tbls;
 973
 974         u32 scd_base_addr;      /* scheduler sram base address */
 975
 976         unsigned long status;
 977
 978         int last_rx_rssi;       /* From Rx packet statistics */
 979         int last_rx_noise;      /* From beacon statistics */
 980
 981         /* counts mgmt, ctl, and data packets */
 982         struct traffic_stats {
 983                 u32 cnt;
 984                 u64 bytes;
 985         } tx_stats[3], rx_stats[3];
 986
 987         /* counts interrupts */
 988         struct isr_statistics isr_stats;
 989
 990         struct iwl_power_mgr power_data;
 991
 992         struct iwl_notif_statistics statistics;
 993         unsigned long last_statistics_time;
 994
 995         /* context information */
 996         u16 rates_mask;
 997
 998         u32 power_mode;
 999         u8 bssid[ETH_ALEN];
1000         u16 rts_threshold;
1001         u8 mac_addr[ETH_ALEN];
1002
1003         /*station table variables */
1004         spinlock_t sta_lock;
1005         int num_stations;
1006         struct iwl_station_entry stations[IWL_STATION_COUNT];
1007         struct iwl_wep_key wep_keys[WEP_KEYS_MAX];
1008         u8 default_wep_key;
1009         u8 key_mapping_key;
1010         unsigned long ucode_key_table;
1011
1012         /* queue refcounts */
1013 #define IWL_MAX_HW_QUEUES       32
1014         unsigned long queue_stopped[BITS_TO_LONGS(IWL_MAX_HW_QUEUES)];
1015         /* for each AC */
1016         atomic_t queue_stop_count[4];
1017
1018         /* Indication if ieee80211_ops->open has been called */
1019         u8 is_open;
1020
1021         u8 mac80211_registered;
1022
1023         /* Rx'd packet timing information */
1024         u32 last_beacon_time;
1025         u64 last_tsf;
1026
1027         /* eeprom */
1028         u8 *eeprom;
1029         int    nvm_device_type;
1030         struct iwl_eeprom_calib_info *calib_info;
1031
1032         enum nl80211_iftype iw_mode;
1033
1034         struct sk_buff *ibss_beacon;
1035
1036         /* Last Rx'd beacon timestamp */
1037         u64 timestamp;
1038         u16 beacon_int;
1039         struct ieee80211_vif *vif;
1040
1041         /*Added for 3945 */
1042         void *shared_virt;
1043         dma_addr_t shared_phys;
1044         /*End*/
1045         struct iwl_hw_params hw_params;
1046
1047         /* INT ICT Table */
1048         u32 *ict_tbl;
1049         dma_addr_t ict_tbl_dma;
1050         dma_addr_t aligned_ict_tbl_dma;
1051         int ict_index;
1052         void *ict_tbl_vir;
1053         u32 inta;
1054         bool use_ict;
1055
1056         u32 inta_mask;
1057         /* Current association information needed to configure the
1058          * hardware */
1059         u16 assoc_id;
1060         u16 assoc_capability;
1061
1062         struct iwl_qos_info qos_data;
1063
1064         struct workqueue_struct *workqueue;
1065
1066         struct work_struct up;
1067         struct work_struct restart;
1068         struct work_struct calibrated_work;
1069         struct work_struct scan_completed;
1070         struct work_struct rx_replenish;
1071         struct work_struct abort_scan;
1072         struct work_struct update_link_led;
1073         struct work_struct auth_work;
1074         struct work_struct report_work;
1075         struct work_struct request_scan;
1076         struct work_struct beacon_update;
1077
1078         struct tasklet_struct irq_tasklet;
1079
1080         struct delayed_work init_alive_start;
1081         struct delayed_work alive_start;
1082         struct delayed_work scan_check;
1083
1084         /*For 3945 only*/
1085         struct delayed_work thermal_periodic;
1086         struct delayed_work rfkill_poll;
1087
1088         /* TX Power */
1089         s8 tx_power_user_lmt;
1090         s8 tx_power_channel_lmt;
1091
1092
1093 #ifdef CONFIG_IWLWIFI_DEBUG
1094         /* debugging info */
1095         u32 debug_level;
1096         u32 framecnt_to_us;
1097         atomic_t restrict_refcnt;
1098 #ifdef CONFIG_IWLWIFI_DEBUGFS
1099         /* debugfs */
1100         struct iwl_debugfs *dbgfs;
1101 #endif /* CONFIG_IWLWIFI_DEBUGFS */
1102 #endif /* CONFIG_IWLWIFI_DEBUG */
1103
1104         struct work_struct txpower_work;
1105         u32 disable_sens_cal;
1106         u32 disable_chain_noise_cal;
1107         u32 disable_tx_power_cal;
1108         struct work_struct run_time_calib_work;
1109         struct timer_list statistics_periodic;
1110         bool hw_ready;
1111         /*For 3945*/
1112 #define IWL_DEFAULT_TX_POWER 0x0F
1113
1114         struct iwl3945_notif_statistics statistics_39;
1115
1116         u32 sta_supp_rates;
1117 }; /*iwl_priv */
1118
1119 static inline void iwl_txq_ctx_activate(struct iwl_priv *priv, int txq_id)
1120 {
1121         set_bit(txq_id, &priv->txq_ctx_active_msk);
1122 }
1123
1124 static inline void iwl_txq_ctx_deactivate(struct iwl_priv *priv, int txq_id)
1125 {
1126         clear_bit(txq_id, &priv->txq_ctx_active_msk);
1127 }
1128
1129 #ifdef CONFIG_IWLWIFI_DEBUG
1130 const char *iwl_get_tx_fail_reason(u32 status);
1131 #else
1132 static inline const char *iwl_get_tx_fail_reason(u32 status) { return ""; }
1133 #endif
1134
1135
1136 static inline struct ieee80211_hdr *iwl_tx_queue_get_hdr(struct iwl_priv *priv,
1137                                                          int txq_id, int idx)
1138 {
1139         if (priv->txq[txq_id].txb[idx].skb[0])
1140                 return (struct ieee80211_hdr *)priv->txq[txq_id].
1141                                 txb[idx].skb[0]->data;
1142         return NULL;
1143 }
1144
1145
1146 static inline int iwl_is_associated(struct iwl_priv *priv)
1147 {
1148         return (priv->active_rxon.filter_flags & RXON_FILTER_ASSOC_MSK) ? 1 : 0;
1149 }
1150
1151 static inline int is_channel_valid(const struct iwl_channel_info *ch_info)
1152 {
1153         if (ch_info == NULL)
1154                 return 0;
1155         return (ch_info->flags & EEPROM_CHANNEL_VALID) ? 1 : 0;
1156 }
1157
1158 static inline int is_channel_radar(const struct iwl_channel_info *ch_info)
1159 {
1160         return (ch_info->flags & EEPROM_CHANNEL_RADAR) ? 1 : 0;
1161 }
1162
1163 static inline u8 is_channel_a_band(const struct iwl_channel_info *ch_info)
1164 {
1165         return ch_info->band == IEEE80211_BAND_5GHZ;
1166 }
1167
1168 static inline u8 is_channel_bg_band(const struct iwl_channel_info *ch_info)
1169 {
1170         return ch_info->band == IEEE80211_BAND_2GHZ;
1171 }
1172
1173 static inline int is_channel_passive(const struct iwl_channel_info *ch)
1174 {
1175         return (!(ch->flags & EEPROM_CHANNEL_ACTIVE)) ? 1 : 0;
1176 }
1177
1178 static inline int is_channel_ibss(const struct iwl_channel_info *ch)
1179 {
1180         return ((ch->flags & EEPROM_CHANNEL_IBSS)) ? 1 : 0;
1181 }
1182
1183 #endif                          /* __iwl_dev_h__ */