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 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  * Tomas Winkler <tomas.winkler@intel.com>
  29  * Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497
  30  *
  31  * BSD LICENSE
  32  *
  33  * Copyright(c) 2005 - 2008 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) 2003-2008 Intel Corporation"
  75
  76 #define IWL_PCI_DEVICE(dev, subdev, cfg) \
  77         .vendor = PCI_VENDOR_ID_INTEL,  .device = (dev), \
  78         .subvendor = PCI_ANY_ID, .subdevice = (subdev), \
  79         .driver_data = (kernel_ulong_t)&(cfg)
  80
  81 #define IWL_SKU_G       0x1
  82 #define IWL_SKU_A       0x2
  83 #define IWL_SKU_N       0x8
  84
  85 struct iwl_hcmd_ops {
  86         int (*rxon_assoc)(struct iwl_priv *priv);
  87 };
  88 struct iwl_hcmd_utils_ops {
  89         u16 (*get_hcmd_size)(u8 cmd_id, u16 len);
  90         u16 (*build_addsta_hcmd)(const struct iwl_addsta_cmd *cmd, u8 *data);
  91         void (*gain_computation)(struct iwl_priv *priv,
  92                         u32 *average_noise,
  93                         u16 min_average_noise_antennat_i,
  94                         u32 min_average_noise);
  95         void (*chain_noise_reset)(struct iwl_priv *priv);
  96         void (*rts_tx_cmd_flag)(struct ieee80211_tx_info *info,
  97                         __le32 *tx_flags);
  98         int  (*calc_rssi)(struct iwl_priv *priv,
  99                           struct iwl_rx_phy_res *rx_resp);
 100 };
 101
 102 struct iwl_lib_ops {
 103         /* set hw dependent parameters */
 104         int (*set_hw_params)(struct iwl_priv *priv);
 105         /* Handling TX */
 106         void (*txq_update_byte_cnt_tbl)(struct iwl_priv *priv,
 107                                         struct iwl_tx_queue *txq,
 108                                         u16 byte_cnt);
 109         void (*txq_inval_byte_cnt_tbl)(struct iwl_priv *priv,
 110                                        struct iwl_tx_queue *txq);
 111         void (*txq_set_sched)(struct iwl_priv *priv, u32 mask);
 112         /* aggregations */
 113         int (*txq_agg_enable)(struct iwl_priv *priv, int txq_id, int tx_fifo,
 114                               int sta_id, int tid, u16 ssn_idx);
 115         int (*txq_agg_disable)(struct iwl_priv *priv, u16 txq_id, u16 ssn_idx,
 116                                u8 tx_fifo);
 117         /* setup Rx handler */
 118         void (*rx_handler_setup)(struct iwl_priv *priv);
 119         /* setup deferred work */
 120         void (*setup_deferred_work)(struct iwl_priv *priv);
 121         /* cancel deferred work */
 122         void (*cancel_deferred_work)(struct iwl_priv *priv);
 123         /* alive notification after init uCode load */
 124         void (*init_alive_start)(struct iwl_priv *priv);
 125         /* alive notification */
 126         int (*alive_notify)(struct iwl_priv *priv);
 127         /* check validity of rtc data address */
 128         int (*is_valid_rtc_data_addr)(u32 addr);
 129         /* 1st ucode load */
 130         int (*load_ucode)(struct iwl_priv *priv);
 131          /* power management */
 132         struct {
 133                 int (*init)(struct iwl_priv *priv);
 134                 int (*reset)(struct iwl_priv *priv);
 135                 void (*stop)(struct iwl_priv *priv);
 136                 void (*config)(struct iwl_priv *priv);
 137                 int (*set_pwr_src)(struct iwl_priv *priv, enum iwl_pwr_src src);
 138         } apm_ops;
 139         /* power */
 140         int (*send_tx_power) (struct iwl_priv *priv);
 141         void (*update_chain_flags)(struct iwl_priv *priv);
 142         void (*temperature) (struct iwl_priv *priv);
 143         /* eeprom operations (as defined in iwl-eeprom.h) */
 144         struct iwl_eeprom_ops eeprom_ops;
 145 };
 146
 147 struct iwl_ops {
 148         const struct iwl_lib_ops *lib;
 149         const struct iwl_hcmd_ops *hcmd;
 150         const struct iwl_hcmd_utils_ops *utils;
 151 };
 152
 153 struct iwl_mod_params {
 154         int disable;            /* def: 0 = enable radio */
 155         int sw_crypto;          /* def: 0 = using hardware encryption */
 156         int debug;              /* def: 0 = minimal debug log messages */
 157         int disable_hw_scan;    /* def: 0 = use h/w scan */
 158         int num_of_queues;      /* def: HW dependent */
 159         int num_of_ampdu_queues;/* def: HW dependent */
 160         int enable_qos;         /* def: 1 = use quality of service */
 161         int disable_11n;        /* def: 0 = disable 11n capabilities */
 162         int amsdu_size_8K;      /* def: 1 = enable 8K amsdu size */
 163         int antenna;            /* def: 0 = both antennas (use diversity) */
 164         int restart_fw;         /* def: 1 = restart firmware */
 165 };
 166
 167 struct iwl_cfg {
 168         const char *name;
 169         const char *fw_name;
 170         unsigned int sku;
 171         int eeprom_size;
 172         u16  eeprom_ver;
 173         u16  eeprom_calib_ver;
 174         const struct iwl_ops *ops;
 175         const struct iwl_mod_params *mod_params;
 176 };
 177
 178 /***************************
 179  *   L i b                 *
 180  ***************************/
 181
 182 struct ieee80211_hw *iwl_alloc_all(struct iwl_cfg *cfg,
 183                 struct ieee80211_ops *hw_ops);
 184 void iwl_hw_detect(struct iwl_priv *priv);
 185 void iwl_clear_stations_table(struct iwl_priv *priv);
 186 void iwl_reset_qos(struct iwl_priv *priv);
 187 void iwl_set_rxon_chain(struct iwl_priv *priv);
 188 int iwl_set_rxon_channel(struct iwl_priv *priv, struct ieee80211_channel *ch);
 189 void iwl_set_rxon_ht(struct iwl_priv *priv, struct iwl_ht_info *ht_info);
 190 u8 iwl_is_fat_tx_allowed(struct iwl_priv *priv,
 191                          struct ieee80211_sta_ht_cap *sta_ht_inf);
 192 int iwl_hw_nic_init(struct iwl_priv *priv);
 193 int iwl_setup_mac(struct iwl_priv *priv);
 194 int iwl_set_hw_params(struct iwl_priv *priv);
 195 int iwl_init_drv(struct iwl_priv *priv);
 196 void iwl_uninit_drv(struct iwl_priv *priv);
 197
 198 /*****************************************************
 199 * RX
 200 ******************************************************/
 201 void iwl_rx_queue_free(struct iwl_priv *priv, struct iwl_rx_queue *rxq);
 202 int iwl_rx_queue_alloc(struct iwl_priv *priv);
 203 void iwl_rx_handle(struct iwl_priv *priv);
 204 int iwl_rx_queue_update_write_ptr(struct iwl_priv *priv,
 205                                   struct iwl_rx_queue *q);
 206 void iwl_rx_queue_reset(struct iwl_priv *priv, struct iwl_rx_queue *rxq);
 207 void iwl_rx_replenish(struct iwl_priv *priv);
 208 int iwl_rx_init(struct iwl_priv *priv, struct iwl_rx_queue *rxq);
 209 int iwl_rx_queue_restock(struct iwl_priv *priv);
 210 int iwl_rx_queue_space(const struct iwl_rx_queue *q);
 211 void iwl_rx_allocate(struct iwl_priv *priv);
 212 void iwl_tx_cmd_complete(struct iwl_priv *priv, struct iwl_rx_mem_buffer *rxb);
 213 int iwl_tx_queue_reclaim(struct iwl_priv *priv, int txq_id, int index);
 214 /* Handlers */
 215 void iwl_rx_missed_beacon_notif(struct iwl_priv *priv,
 216                                struct iwl_rx_mem_buffer *rxb);
 217 void iwl_rx_statistics(struct iwl_priv *priv,
 218                               struct iwl_rx_mem_buffer *rxb);
 219
 220 /* TX helpers */
 221
 222 /*****************************************************
 223 * TX
 224 ******************************************************/
 225 int iwl_txq_ctx_reset(struct iwl_priv *priv);
 226 int iwl_tx_skb(struct iwl_priv *priv, struct sk_buff *skb);
 227 void iwl_hw_txq_ctx_free(struct iwl_priv *priv);
 228 int iwl_txq_update_write_ptr(struct iwl_priv *priv, struct iwl_tx_queue *txq);
 229 int iwl_tx_agg_start(struct iwl_priv *priv, const u8 *ra, u16 tid, u16 *ssn);
 230 int iwl_tx_agg_stop(struct iwl_priv *priv , const u8 *ra, u16 tid);
 231 int iwl_txq_check_empty(struct iwl_priv *priv, int sta_id, u8 tid, int txq_id);
 232 /*****************************************************
 233  * TX power
 234  ****************************************************/
 235 int iwl_set_tx_power(struct iwl_priv *priv, s8 tx_power, bool force);
 236
 237 /*****************************************************
 238  * RF -Kill - here and not in iwl-rfkill.h to be available when
 239  * RF-kill subsystem is not compiled.
 240  ****************************************************/
 241 void iwl_rf_kill(struct iwl_priv *priv);
 242 void iwl_radio_kill_sw_disable_radio(struct iwl_priv *priv);
 243 int iwl_radio_kill_sw_enable_radio(struct iwl_priv *priv);
 244
 245 /*******************************************************************************
 246  * Rate
 247  ******************************************************************************/
 248
 249 void iwl_hwrate_to_tx_control(struct iwl_priv *priv, u32 rate_n_flags,
 250                               struct ieee80211_tx_info *info);
 251 int iwl_hwrate_to_plcp_idx(u32 rate_n_flags);
 252
 253 u8 iwl_toggle_tx_ant(struct iwl_priv *priv, u8 ant_idx);
 254
 255 static inline u32 iwl_ant_idx_to_flags(u8 ant_idx)
 256 {
 257         return BIT(ant_idx) << RATE_MCS_ANT_POS;
 258 }
 259
 260 static inline u8 iwl_hw_get_rate(__le32 rate_n_flags)
 261 {
 262         return le32_to_cpu(rate_n_flags) & 0xFF;
 263 }
 264 static inline u32 iwl_hw_get_rate_n_flags(__le32 rate_n_flags)
 265 {
 266         return le32_to_cpu(rate_n_flags) & 0x1FFFF;
 267 }
 268 static inline __le32 iwl_hw_set_rate_n_flags(u8 rate, u32 flags)
 269 {
 270         return cpu_to_le32(flags|(u32)rate);
 271 }
 272
 273 /*******************************************************************************
 274  * Scanning
 275  ******************************************************************************/
 276 void iwl_init_scan_params(struct iwl_priv *priv);
 277 int iwl_scan_cancel(struct iwl_priv *priv);
 278 int iwl_scan_cancel_timeout(struct iwl_priv *priv, unsigned long ms);
 279 int iwl_scan_initiate(struct iwl_priv *priv);
 280 void iwl_setup_rx_scan_handlers(struct iwl_priv *priv);
 281 void iwl_setup_scan_deferred_work(struct iwl_priv *priv);
 282
 283 /*******************************************************************************
 284  * Calibrations - implemented in iwl-calib.c
 285  ******************************************************************************/
 286 int iwl_send_calib_results(struct iwl_priv *priv);
 287 int iwl_calib_set(struct iwl_calib_result *res, const u8 *buf, int len);
 288 void iwl_calib_free_results(struct iwl_priv *priv);
 289
 290 /*******************************************************************************
 291  * Spectrum Measureemtns in  iwl-spectrum.c
 292  ******************************************************************************/
 293 #ifdef CONFIG_IWLAGN_SPECTRUM_MEASUREMENT
 294 void iwl_setup_spectrum_handlers(struct iwl_priv *priv);
 295 #else
 296 static inline void iwl_setup_spectrum_handlers(struct iwl_priv *priv) {}
 297 #endif
 298 /*****************************************************
 299  *   S e n d i n g     H o s t     C o m m a n d s   *
 300  *****************************************************/
 301
 302 const char *get_cmd_string(u8 cmd);
 303 int __must_check iwl_send_cmd_sync(struct iwl_priv *priv,
 304                                    struct iwl_host_cmd *cmd);
 305 int iwl_send_cmd(struct iwl_priv *priv, struct iwl_host_cmd *cmd);
 306 int __must_check iwl_send_cmd_pdu(struct iwl_priv *priv, u8 id,
 307                                   u16 len, const void *data);
 308 int iwl_send_cmd_pdu_async(struct iwl_priv *priv, u8 id, u16 len,
 309                            const void *data,
 310                            int (*callback)(struct iwl_priv *priv,
 311                                            struct iwl_cmd *cmd,
 312                                            struct sk_buff *skb));
 313
 314 int iwl_enqueue_hcmd(struct iwl_priv *priv, struct iwl_host_cmd *cmd);
 315
 316 /*****************************************************
 317 *  Error Handling Debugging
 318 ******************************************************/
 319 void iwl_dump_nic_error_log(struct iwl_priv *priv);
 320 void iwl_dump_nic_event_log(struct iwl_priv *priv);
 321
 322
 323 /*************** DRIVER STATUS FUNCTIONS   *****/
 324
 325 #define STATUS_HCMD_ACTIVE      0       /* host command in progress */
 326 #define STATUS_HCMD_SYNC_ACTIVE 1       /* sync host command in progress */
 327 #define STATUS_INT_ENABLED      2
 328 #define STATUS_RF_KILL_HW       3
 329 #define STATUS_RF_KILL_SW       4
 330 #define STATUS_INIT             5
 331 #define STATUS_ALIVE            6
 332 #define STATUS_READY            7
 333 #define STATUS_TEMPERATURE      8
 334 #define STATUS_GEO_CONFIGURED   9
 335 #define STATUS_EXIT_PENDING     10
 336 #define STATUS_IN_SUSPEND       11
 337 #define STATUS_STATISTICS       12
 338 #define STATUS_SCANNING         13
 339 #define STATUS_SCAN_ABORTING    14
 340 #define STATUS_SCAN_HW          15
 341 #define STATUS_POWER_PMI        16
 342 #define STATUS_FW_ERROR         17
 343 #define STATUS_MODE_PENDING     18
 344
 345
 346 static inline int iwl_is_ready(struct iwl_priv *priv)
 347 {
 348         /* The adapter is 'ready' if READY and GEO_CONFIGURED bits are
 349          * set but EXIT_PENDING is not */
 350         return test_bit(STATUS_READY, &priv->status) &&
 351                test_bit(STATUS_GEO_CONFIGURED, &priv->status) &&
 352                !test_bit(STATUS_EXIT_PENDING, &priv->status);
 353 }
 354
 355 static inline int iwl_is_alive(struct iwl_priv *priv)
 356 {
 357         return test_bit(STATUS_ALIVE, &priv->status);
 358 }
 359
 360 static inline int iwl_is_init(struct iwl_priv *priv)
 361 {
 362         return test_bit(STATUS_INIT, &priv->status);
 363 }
 364
 365 static inline int iwl_is_rfkill_sw(struct iwl_priv *priv)
 366 {
 367         return test_bit(STATUS_RF_KILL_SW, &priv->status);
 368 }
 369
 370 static inline int iwl_is_rfkill_hw(struct iwl_priv *priv)
 371 {
 372         return test_bit(STATUS_RF_KILL_HW, &priv->status);
 373 }
 374
 375 static inline int iwl_is_rfkill(struct iwl_priv *priv)
 376 {
 377         return iwl_is_rfkill_hw(priv) || iwl_is_rfkill_sw(priv);
 378 }
 379
 380 static inline int iwl_is_ready_rf(struct iwl_priv *priv)
 381 {
 382
 383         if (iwl_is_rfkill(priv))
 384                 return 0;
 385
 386         return iwl_is_ready(priv);
 387 }
 388
 389 extern void iwl_rf_kill_ct_config(struct iwl_priv *priv);
 390 extern int iwl_send_statistics_request(struct iwl_priv *priv, u8 flags);
 391 extern int iwl_verify_ucode(struct iwl_priv *priv);
 392 extern int iwl_send_lq_cmd(struct iwl_priv *priv,
 393                 struct iwl_link_quality_cmd *lq, u8 flags);
 394 extern void iwl_rx_reply_rx(struct iwl_priv *priv,
 395                 struct iwl_rx_mem_buffer *rxb);
 396 extern void iwl_rx_reply_rx_phy(struct iwl_priv *priv,
 397                                     struct iwl_rx_mem_buffer *rxb);
 398 void iwl_rx_reply_compressed_ba(struct iwl_priv *priv,
 399                                            struct iwl_rx_mem_buffer *rxb);
 400
 401 static inline int iwl_send_rxon_assoc(struct iwl_priv *priv)
 402 {
 403         return priv->cfg->ops->hcmd->rxon_assoc(priv);
 404 }
 405
 406 static inline const struct ieee80211_supported_band *iwl_get_hw_mode(
 407                         struct iwl_priv *priv, enum ieee80211_band band)
 408 {
 409         return priv->hw->wiphy->bands[band];
 410 }
 411
 412 #endif /* __iwl_core_h__ */