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

   1 /******************************************************************************
   2  *
   3  * This file is provided under a dual BSD/GPLv2 license.  When using or
   4  * redistributing this file, you may do so under either license.
   5  *
   6  * GPL LICENSE SUMMARY
   7  *
   8  * Copyright(c) 2008 - 2009 Intel Corporation. All rights reserved.
   9  *
  10  * This program is free software; you can redistribute it and/or modify
  11  * it under the terms of version 2 of the GNU General Public License as
  12  * published by the Free Software Foundation.
  13  *
  14  * This program is distributed in the hope that it will be useful, but
  15  * WITHOUT ANY WARRANTY; without even the implied warranty of
  16  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  17  * General Public License for more details.
  18  *
  19  * You should have received a copy of the GNU General Public License
  20  * along with this program; if not, write to the Free Software
  21  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110,
  22  * USA
  23  *
  24  * The full GNU General Public License is included in this distribution
  25  * in the file called LICENSE.GPL.
  26  *
  27  * Contact Information:
  28  *  Intel Linux Wireless <ilw@linux.intel.com>
  29  * Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497
  30  *
  31  * BSD LICENSE
  32  *
  33  * Copyright(c) 2005 - 2009 Intel Corporation. All rights reserved.
  34  * All rights reserved.
  35  *
  36  * Redistribution and use in source and binary forms, with or without
  37  * modification, are permitted provided that the following conditions
  38  * are met:
  39  *
  40  *  * Redistributions of source code must retain the above copyright
  41  *    notice, this list of conditions and the following disclaimer.
  42  *  * Redistributions in binary form must reproduce the above copyright
  43  *    notice, this list of conditions and the following disclaimer in
  44  *    the documentation and/or other materials provided with the
  45  *    distribution.
  46  *  * Neither the name Intel Corporation nor the names of its
  47  *    contributors may be used to endorse or promote products derived
  48  *    from this software without specific prior written permission.
  49  *
  50  * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
  51  * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
  52  * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
  53  * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
  54  * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
  55  * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
  56  * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
  57  * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
  58  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
  59  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
  60  * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  61  *****************************************************************************/
  62
  63 #ifndef __iwl_core_h__
  64 #define __iwl_core_h__
  65
  66 /************************
  67  * forward declarations *
  68  ************************/
  69 struct iwl_host_cmd;
  70 struct iwl_cmd;
  71
  72
  73 #define IWLWIFI_VERSION "1.3.27k"
  74 #define DRV_COPYRIGHT   "Copyright(c) 2003-2009 Intel Corporation"
  75 #define DRV_AUTHOR     "<ilw@linux.intel.com>"
  76
  77 #define IWL_PCI_DEVICE(dev, subdev, cfg) \
  78         .vendor = PCI_VENDOR_ID_INTEL,  .device = (dev), \
  79         .subvendor = PCI_ANY_ID, .subdevice = (subdev), \
  80         .driver_data = (kernel_ulong_t)&(cfg)
  81
  82 #define IWL_SKU_G       0x1
  83 #define IWL_SKU_A       0x2
  84 #define IWL_SKU_N       0x8
  85
  86 struct iwl_hcmd_ops {
  87         int (*rxon_assoc)(struct iwl_priv *priv);
  88 };
  89 struct iwl_hcmd_utils_ops {
  90         u16 (*get_hcmd_size)(u8 cmd_id, u16 len);
  91         u16 (*build_addsta_hcmd)(const struct iwl_addsta_cmd *cmd, u8 *data);
  92         void (*gain_computation)(struct iwl_priv *priv,
  93                         u32 *average_noise,
  94                         u16 min_average_noise_antennat_i,
  95                         u32 min_average_noise);
  96         void (*chain_noise_reset)(struct iwl_priv *priv);
  97         void (*rts_tx_cmd_flag)(struct ieee80211_tx_info *info,
  98                         __le32 *tx_flags);
  99         int  (*calc_rssi)(struct iwl_priv *priv,
 100                           struct iwl_rx_phy_res *rx_resp);
 101 };
 102
 103 struct iwl_lib_ops {
 104         /* set hw dependent parameters */
 105         int (*set_hw_params)(struct iwl_priv *priv);
 106         /* Handling TX */
 107         void (*txq_update_byte_cnt_tbl)(struct iwl_priv *priv,
 108                                         struct iwl_tx_queue *txq,
 109                                         u16 byte_cnt);
 110         void (*txq_inval_byte_cnt_tbl)(struct iwl_priv *priv,
 111                                        struct iwl_tx_queue *txq);
 112         void (*txq_set_sched)(struct iwl_priv *priv, u32 mask);
 113         int (*txq_attach_buf_to_tfd)(struct iwl_priv *priv,
 114                                      struct iwl_tx_queue *txq,
 115                                      dma_addr_t addr,
 116                                      u16 len, u8 reset, u8 pad);
 117         void (*txq_free_tfd)(struct iwl_priv *priv,
 118                              struct iwl_tx_queue *txq);
 119         /* aggregations */
 120         int (*txq_agg_enable)(struct iwl_priv *priv, int txq_id, int tx_fifo,
 121                               int sta_id, int tid, u16 ssn_idx);
 122         int (*txq_agg_disable)(struct iwl_priv *priv, u16 txq_id, u16 ssn_idx,
 123                                u8 tx_fifo);
 124         /* setup Rx handler */
 125         void (*rx_handler_setup)(struct iwl_priv *priv);
 126         /* setup deferred work */
 127         void (*setup_deferred_work)(struct iwl_priv *priv);
 128         /* cancel deferred work */
 129         void (*cancel_deferred_work)(struct iwl_priv *priv);
 130         /* alive notification after init uCode load */
 131         void (*init_alive_start)(struct iwl_priv *priv);
 132         /* alive notification */
 133         int (*alive_notify)(struct iwl_priv *priv);
 134         /* check validity of rtc data address */
 135         int (*is_valid_rtc_data_addr)(u32 addr);
 136         /* 1st ucode load */
 137         int (*load_ucode)(struct iwl_priv *priv);
 138          /* power management */
 139         struct {
 140                 int (*init)(struct iwl_priv *priv);
 141                 int (*reset)(struct iwl_priv *priv);
 142                 void (*stop)(struct iwl_priv *priv);
 143                 void (*config)(struct iwl_priv *priv);
 144                 int (*set_pwr_src)(struct iwl_priv *priv, enum iwl_pwr_src src);
 145         } apm_ops;
 146         /* power */
 147         int (*send_tx_power) (struct iwl_priv *priv);
 148         void (*update_chain_flags)(struct iwl_priv *priv);
 149         void (*temperature) (struct iwl_priv *priv);
 150         /* eeprom operations (as defined in iwl-eeprom.h) */
 151         struct iwl_eeprom_ops eeprom_ops;
 152 };
 153
 154 struct iwl_ops {
 155         const struct iwl_lib_ops *lib;
 156         const struct iwl_hcmd_ops *hcmd;
 157         const struct iwl_hcmd_utils_ops *utils;
 158 };
 159
 160 struct iwl_mod_params {
 161         int disable;            /* def: 0 = enable radio */
 162         int sw_crypto;          /* def: 0 = using hardware encryption */
 163         u32 debug;              /* def: 0 = minimal debug log messages */
 164         int disable_hw_scan;    /* def: 0 = use h/w scan */
 165         int num_of_queues;      /* def: HW dependent */
 166         int num_of_ampdu_queues;/* def: HW dependent */
 167         int disable_11n;        /* def: 0 = disable 11n capabilities */
 168         int amsdu_size_8K;      /* def: 1 = enable 8K amsdu size */
 169         int antenna;            /* def: 0 = both antennas (use diversity) */
 170         int restart_fw;         /* def: 1 = restart firmware */
 171 };
 172
 173 /**
 174  * struct iwl_cfg
 175  * @fw_name_pre: Firmware filename prefix. The api version and extension
 176  *      (.ucode) will be added to filename before loading from disk. The
 177  *      filename is constructed as fw_name_pre<api>.ucode.
 178  * @ucode_api_max: Highest version of uCode API supported by driver.
 179  * @ucode_api_min: Lowest version of uCode API supported by driver.
 180  *
 181  * We enable the driver to be backward compatible wrt API version. The
 182  * driver specifies which APIs it supports (with @ucode_api_max being the
 183  * highest and @ucode_api_min the lowest). Firmware will only be loaded if
 184  * it has a supported API version. The firmware's API version will be
 185  * stored in @iwl_priv, enabling the driver to make runtime changes based
 186  * on firmware version used.
 187  *
 188  * For example,
 189  * if (IWL_UCODE_API(priv->ucode_ver) >= 2) {
 190  *      Driver interacts with Firmware API version >= 2.
 191  * } else {
 192  *      Driver interacts with Firmware API version 1.
 193  * }
 194  *
 195  * The ideal usage of this infrastructure is to treat a new ucode API
 196  * release as a new hardware revision. That is, through utilizing the
 197  * iwl_hcmd_utils_ops etc. we accommodate different command structures
 198  * and flows between hardware versions (4965/5000) as well as their API
 199  * versions.
 200  */
 201 struct iwl_cfg {
 202         const char *name;
 203         const char *fw_name_pre;
 204         const unsigned int ucode_api_max;
 205         const unsigned int ucode_api_min;
 206         unsigned int sku;
 207         int eeprom_size;
 208         u16  eeprom_ver;
 209         u16  eeprom_calib_ver;
 210         const struct iwl_ops *ops;
 211         const struct iwl_mod_params *mod_params;
 212 };
 213
 214 /***************************
 215  *   L i b                 *
 216  ***************************/
 217
 218 struct ieee80211_hw *iwl_alloc_all(struct iwl_cfg *cfg,
 219                 struct ieee80211_ops *hw_ops);
 220 void iwl_hw_detect(struct iwl_priv *priv);
 221 void iwl_reset_qos(struct iwl_priv *priv);
 222 void iwl_set_rxon_chain(struct iwl_priv *priv);
 223 int iwl_set_rxon_channel(struct iwl_priv *priv, struct ieee80211_channel *ch);
 224 void iwl_set_rxon_ht(struct iwl_priv *priv, struct iwl_ht_info *ht_info);
 225 u8 iwl_is_fat_tx_allowed(struct iwl_priv *priv,
 226                          struct ieee80211_sta_ht_cap *sta_ht_inf);
 227 int iwl_hw_nic_init(struct iwl_priv *priv);
 228 int iwl_setup_mac(struct iwl_priv *priv);
 229 int iwl_set_hw_params(struct iwl_priv *priv);
 230 int iwl_init_drv(struct iwl_priv *priv);
 231 void iwl_uninit_drv(struct iwl_priv *priv);
 232
 233 /*****************************************************
 234 * RX
 235 ******************************************************/
 236 void iwl_rx_queue_free(struct iwl_priv *priv, struct iwl_rx_queue *rxq);
 237 int iwl_rx_queue_alloc(struct iwl_priv *priv);
 238 void iwl_rx_handle(struct iwl_priv *priv);
 239 int iwl_rx_queue_update_write_ptr(struct iwl_priv *priv,
 240                                   struct iwl_rx_queue *q);
 241 void iwl_rx_queue_reset(struct iwl_priv *priv, struct iwl_rx_queue *rxq);
 242 void iwl_rx_replenish(struct iwl_priv *priv);
 243 int iwl_rx_init(struct iwl_priv *priv, struct iwl_rx_queue *rxq);
 244 int iwl_rx_queue_restock(struct iwl_priv *priv);
 245 int iwl_rx_queue_space(const struct iwl_rx_queue *q);
 246 void iwl_rx_allocate(struct iwl_priv *priv);
 247 void iwl_tx_cmd_complete(struct iwl_priv *priv, struct iwl_rx_mem_buffer *rxb);
 248 int iwl_tx_queue_reclaim(struct iwl_priv *priv, int txq_id, int index);
 249 /* Handlers */
 250 void iwl_rx_missed_beacon_notif(struct iwl_priv *priv,
 251                                struct iwl_rx_mem_buffer *rxb);
 252 void iwl_rx_statistics(struct iwl_priv *priv,
 253                               struct iwl_rx_mem_buffer *rxb);
 254
 255 /* TX helpers */
 256
 257 /*****************************************************
 258 * TX
 259 ******************************************************/
 260 int iwl_txq_ctx_reset(struct iwl_priv *priv);
 261 void iwl_hw_txq_free_tfd(struct iwl_priv *priv, struct iwl_tx_queue *txq);
 262 int iwl_hw_txq_attach_buf_to_tfd(struct iwl_priv *priv,
 263                                  struct iwl_tx_queue *txq,
 264                                  dma_addr_t addr, u16 len, u8 reset, u8 pad);
 265 int iwl_tx_skb(struct iwl_priv *priv, struct sk_buff *skb);
 266 void iwl_hw_txq_ctx_free(struct iwl_priv *priv);
 267 int iwl_txq_update_write_ptr(struct iwl_priv *priv, struct iwl_tx_queue *txq);
 268 int iwl_tx_agg_start(struct iwl_priv *priv, const u8 *ra, u16 tid, u16 *ssn);
 269 int iwl_tx_agg_stop(struct iwl_priv *priv , const u8 *ra, u16 tid);
 270 int iwl_txq_check_empty(struct iwl_priv *priv, int sta_id, u8 tid, int txq_id);
 271 /*****************************************************
 272  * TX power
 273  ****************************************************/
 274 int iwl_set_tx_power(struct iwl_priv *priv, s8 tx_power, bool force);
 275
 276 /*****************************************************
 277  * RF -Kill - here and not in iwl-rfkill.h to be available when
 278  * RF-kill subsystem is not compiled.
 279  ****************************************************/
 280 void iwl_bg_rf_kill(struct work_struct *work);
 281 void iwl_radio_kill_sw_disable_radio(struct iwl_priv *priv);
 282 int iwl_radio_kill_sw_enable_radio(struct iwl_priv *priv);
 283
 284 /*******************************************************************************
 285  * Rate
 286  ******************************************************************************/
 287
 288 void iwl_hwrate_to_tx_control(struct iwl_priv *priv, u32 rate_n_flags,
 289                               struct ieee80211_tx_info *info);
 290 int iwl_hwrate_to_plcp_idx(u32 rate_n_flags);
 291
 292 u8 iwl_toggle_tx_ant(struct iwl_priv *priv, u8 ant_idx);
 293
 294 static inline u32 iwl_ant_idx_to_flags(u8 ant_idx)
 295 {
 296         return BIT(ant_idx) << RATE_MCS_ANT_POS;
 297 }
 298
 299 static inline u8 iwl_hw_get_rate(__le32 rate_n_flags)
 300 {
 301         return le32_to_cpu(rate_n_flags) & 0xFF;
 302 }
 303 static inline u32 iwl_hw_get_rate_n_flags(__le32 rate_n_flags)
 304 {
 305         return le32_to_cpu(rate_n_flags) & 0x1FFFF;
 306 }
 307 static inline __le32 iwl_hw_set_rate_n_flags(u8 rate, u32 flags)
 308 {
 309         return cpu_to_le32(flags|(u32)rate);
 310 }
 311
 312 /*******************************************************************************
 313  * Scanning
 314  ******************************************************************************/
 315 void iwl_init_scan_params(struct iwl_priv *priv);
 316 int iwl_scan_cancel(struct iwl_priv *priv);
 317 int iwl_scan_cancel_timeout(struct iwl_priv *priv, unsigned long ms);
 318 int iwl_scan_initiate(struct iwl_priv *priv);
 319 void iwl_setup_rx_scan_handlers(struct iwl_priv *priv);
 320 void iwl_setup_scan_deferred_work(struct iwl_priv *priv);
 321
 322 /*******************************************************************************
 323  * Calibrations - implemented in iwl-calib.c
 324  ******************************************************************************/
 325 int iwl_send_calib_results(struct iwl_priv *priv);
 326 int iwl_calib_set(struct iwl_calib_result *res, const u8 *buf, int len);
 327 void iwl_calib_free_results(struct iwl_priv *priv);
 328
 329 /*******************************************************************************
 330  * Spectrum Measureemtns in  iwl-spectrum.c
 331  ******************************************************************************/
 332 #ifdef CONFIG_IWLAGN_SPECTRUM_MEASUREMENT
 333 void iwl_setup_spectrum_handlers(struct iwl_priv *priv);
 334 #else
 335 static inline void iwl_setup_spectrum_handlers(struct iwl_priv *priv) {}
 336 #endif
 337 /*****************************************************
 338  *   S e n d i n g     H o s t     C o m m a n d s   *
 339  *****************************************************/
 340
 341 const char *get_cmd_string(u8 cmd);
 342 int __must_check iwl_send_cmd_sync(struct iwl_priv *priv,
 343                                    struct iwl_host_cmd *cmd);
 344 int iwl_send_cmd(struct iwl_priv *priv, struct iwl_host_cmd *cmd);
 345 int __must_check iwl_send_cmd_pdu(struct iwl_priv *priv, u8 id,
 346                                   u16 len, const void *data);
 347 int iwl_send_cmd_pdu_async(struct iwl_priv *priv, u8 id, u16 len,
 348                            const void *data,
 349                            int (*callback)(struct iwl_priv *priv,
 350                                            struct iwl_cmd *cmd,
 351                                            struct sk_buff *skb));
 352
 353 int iwl_enqueue_hcmd(struct iwl_priv *priv, struct iwl_host_cmd *cmd);
 354
 355 int iwl_send_card_state(struct iwl_priv *priv, u32 flags,
 356                         u8 meta_flag);
 357
 358 /*****************************************************
 359  * PCI                                               *
 360  *****************************************************/
 361 void iwl_disable_interrupts(struct iwl_priv *priv);
 362 void iwl_enable_interrupts(struct iwl_priv *priv);
 363
 364 /*****************************************************
 365 *  Error Handling Debugging
 366 ******************************************************/
 367 void iwl_dump_nic_error_log(struct iwl_priv *priv);
 368 void iwl_dump_nic_event_log(struct iwl_priv *priv);
 369
 370
 371 /*************** DRIVER STATUS FUNCTIONS   *****/
 372
 373 #define STATUS_HCMD_ACTIVE      0       /* host command in progress */
 374 #define STATUS_HCMD_SYNC_ACTIVE 1       /* sync host command in progress */
 375 #define STATUS_INT_ENABLED      2
 376 #define STATUS_RF_KILL_HW       3
 377 #define STATUS_RF_KILL_SW       4
 378 #define STATUS_INIT             5
 379 #define STATUS_ALIVE            6
 380 #define STATUS_READY            7
 381 #define STATUS_TEMPERATURE      8
 382 #define STATUS_GEO_CONFIGURED   9
 383 #define STATUS_EXIT_PENDING     10
 384 #define STATUS_IN_SUSPEND       11
 385 #define STATUS_STATISTICS       12
 386 #define STATUS_SCANNING         13
 387 #define STATUS_SCAN_ABORTING    14
 388 #define STATUS_SCAN_HW          15
 389 #define STATUS_POWER_PMI        16
 390 #define STATUS_FW_ERROR         17
 391 #define STATUS_MODE_PENDING     18
 392
 393
 394 static inline int iwl_is_ready(struct iwl_priv *priv)
 395 {
 396         /* The adapter is 'ready' if READY and GEO_CONFIGURED bits are
 397          * set but EXIT_PENDING is not */
 398         return test_bit(STATUS_READY, &priv->status) &&
 399                test_bit(STATUS_GEO_CONFIGURED, &priv->status) &&
 400                !test_bit(STATUS_EXIT_PENDING, &priv->status);
 401 }
 402
 403 static inline int iwl_is_alive(struct iwl_priv *priv)
 404 {
 405         return test_bit(STATUS_ALIVE, &priv->status);
 406 }
 407
 408 static inline int iwl_is_init(struct iwl_priv *priv)
 409 {
 410         return test_bit(STATUS_INIT, &priv->status);
 411 }
 412
 413 static inline int iwl_is_rfkill_sw(struct iwl_priv *priv)
 414 {
 415         return test_bit(STATUS_RF_KILL_SW, &priv->status);
 416 }
 417
 418 static inline int iwl_is_rfkill_hw(struct iwl_priv *priv)
 419 {
 420         return test_bit(STATUS_RF_KILL_HW, &priv->status);
 421 }
 422
 423 static inline int iwl_is_rfkill(struct iwl_priv *priv)
 424 {
 425         return iwl_is_rfkill_hw(priv) || iwl_is_rfkill_sw(priv);
 426 }
 427
 428 static inline int iwl_is_ready_rf(struct iwl_priv *priv)
 429 {
 430
 431         if (iwl_is_rfkill(priv))
 432                 return 0;
 433
 434         return iwl_is_ready(priv);
 435 }
 436
 437 extern void iwl_rf_kill_ct_config(struct iwl_priv *priv);
 438 extern int iwl_send_statistics_request(struct iwl_priv *priv, u8 flags);
 439 extern int iwl_verify_ucode(struct iwl_priv *priv);
 440 extern int iwl_send_lq_cmd(struct iwl_priv *priv,
 441                 struct iwl_link_quality_cmd *lq, u8 flags);
 442 extern void iwl_rx_reply_rx(struct iwl_priv *priv,
 443                 struct iwl_rx_mem_buffer *rxb);
 444 extern void iwl_rx_reply_rx_phy(struct iwl_priv *priv,
 445                                     struct iwl_rx_mem_buffer *rxb);
 446 void iwl_rx_reply_compressed_ba(struct iwl_priv *priv,
 447                                            struct iwl_rx_mem_buffer *rxb);
 448
 449 static inline int iwl_send_rxon_assoc(struct iwl_priv *priv)
 450 {
 451         return priv->cfg->ops->hcmd->rxon_assoc(priv);
 452 }
 453
 454 static inline const struct ieee80211_supported_band *iwl_get_hw_mode(
 455                         struct iwl_priv *priv, enum ieee80211_band band)
 456 {
 457         return priv->hw->wiphy->bands[band];
 458 }
 459
 460 #endif /* __iwl_core_h__ */