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 dependant perameters */
 104         int (*set_hw_params)(struct iwl_priv *priv);
 105         /* ucode shared memory */
 106         int (*alloc_shared_mem)(struct iwl_priv *priv);
 107         void (*free_shared_mem)(struct iwl_priv *priv);
 108         int (*shared_mem_rx_idx)(struct iwl_priv *priv);
 109         /* Handling TX */
 110         void (*txq_update_byte_cnt_tbl)(struct iwl_priv *priv,
 111                                         struct iwl_tx_queue *txq,
 112                                         u16 byte_cnt);
 113         void (*txq_inval_byte_cnt_tbl)(struct iwl_priv *priv,
 114                                        struct iwl_tx_queue *txq);
 115         void (*txq_set_sched)(struct iwl_priv *priv, u32 mask);
 116         /* aggregations */
 117         int (*txq_agg_enable)(struct iwl_priv *priv, int txq_id, int tx_fifo,
 118                               int sta_id, int tid, u16 ssn_idx);
 119         int (*txq_agg_disable)(struct iwl_priv *priv, u16 txq_id, u16 ssn_idx,
 120                                u8 tx_fifo);
 121         /* setup Rx handler */
 122         void (*rx_handler_setup)(struct iwl_priv *priv);
 123         /* setup deferred work */
 124         void (*setup_deferred_work)(struct iwl_priv *priv);
 125         /* cancel deferred work */
 126         void (*cancel_deferred_work)(struct iwl_priv *priv);
 127         /* alive notification after init uCode load */
 128         void (*init_alive_start)(struct iwl_priv *priv);
 129         /* alive notification */
 130         int (*alive_notify)(struct iwl_priv *priv);
 131         /* check validity of rtc data address */
 132         int (*is_valid_rtc_data_addr)(u32 addr);
 133         /* 1st ucode load */
 134         int (*load_ucode)(struct iwl_priv *priv);
 135          /* power management */
 136         struct {
 137                 int (*init)(struct iwl_priv *priv);
 138                 int (*reset)(struct iwl_priv *priv);
 139                 void (*stop)(struct iwl_priv *priv);
 140                 void (*config)(struct iwl_priv *priv);
 141                 int (*set_pwr_src)(struct iwl_priv *priv, enum iwl_pwr_src src);
 142         } apm_ops;
 143         /* power */
 144         int (*send_tx_power) (struct iwl_priv *priv);
 145         void (*update_chain_flags)(struct iwl_priv *priv);
 146         void (*temperature) (struct iwl_priv *priv);
 147         /* eeprom operations (as defined in iwl-eeprom.h) */
 148         struct iwl_eeprom_ops eeprom_ops;
 149 };
 150
 151 struct iwl_ops {
 152         const struct iwl_lib_ops *lib;
 153         const struct iwl_hcmd_ops *hcmd;
 154         const struct iwl_hcmd_utils_ops *utils;
 155 };
 156
 157 struct iwl_mod_params {
 158         int disable;            /* def: 0 = enable radio */
 159         int sw_crypto;          /* def: 0 = using hardware encryption */
 160         int debug;              /* def: 0 = minimal debug log messages */
 161         int disable_hw_scan;    /* def: 0 = use h/w scan */
 162         int num_of_queues;      /* def: HW dependent */
 163         int num_of_ampdu_queues;/* def: HW dependent */
 164         int enable_qos;         /* def: 1 = use quality of service */
 165         int disable_11n;        /* def: 0 = disable 11n capabilities */
 166         int amsdu_size_8K;      /* def: 1 = enable 8K amsdu size */
 167         int antenna;            /* def: 0 = both antennas (use diversity) */
 168         int restart_fw;         /* def: 1 = restart firmware */
 169 };
 170
 171 struct iwl_cfg {
 172         const char *name;
 173         const char *fw_name;
 174         unsigned int sku;
 175         int eeprom_size;
 176         const struct iwl_ops *ops;
 177         const struct iwl_mod_params *mod_params;
 178 };
 179
 180 /***************************
 181  *   L i b                 *
 182  ***************************/
 183
 184 struct ieee80211_hw *iwl_alloc_all(struct iwl_cfg *cfg,
 185                 struct ieee80211_ops *hw_ops);
 186 void iwl_hw_detect(struct iwl_priv *priv);
 187
 188 void iwl_clear_stations_table(struct iwl_priv *priv);
 189 void iwl_reset_qos(struct iwl_priv *priv);
 190 void iwl_set_rxon_chain(struct iwl_priv *priv);
 191 int iwl_set_rxon_channel(struct iwl_priv *priv, struct ieee80211_channel *ch);
 192 void iwl_set_rxon_ht(struct iwl_priv *priv, struct iwl_ht_info *ht_info);
 193 u8 iwl_is_fat_tx_allowed(struct iwl_priv *priv,
 194                          struct ieee80211_ht_info *sta_ht_inf);
 195 int iwl_hw_nic_init(struct iwl_priv *priv);
 196 int iwl_setup_mac(struct iwl_priv *priv);
 197 int iwl_set_hw_params(struct iwl_priv *priv);
 198 int iwl_init_drv(struct iwl_priv *priv);
 199 void iwl_uninit_drv(struct iwl_priv *priv);
 200 /* "keep warm" functions */
 201 int iwl_kw_init(struct iwl_priv *priv);
 202 int iwl_kw_alloc(struct iwl_priv *priv);
 203 void iwl_kw_free(struct iwl_priv *priv);
 204
 205 /*****************************************************
 206 * RX
 207 ******************************************************/
 208 void iwl_rx_queue_free(struct iwl_priv *priv, struct iwl_rx_queue *rxq);
 209 int iwl_rx_queue_alloc(struct iwl_priv *priv);
 210 void iwl_rx_handle(struct iwl_priv *priv);
 211 int iwl_rx_queue_update_write_ptr(struct iwl_priv *priv,
 212                                   struct iwl_rx_queue *q);
 213 void iwl_rx_queue_reset(struct iwl_priv *priv, struct iwl_rx_queue *rxq);
 214 void iwl_rx_replenish(struct iwl_priv *priv);
 215 int iwl_rx_init(struct iwl_priv *priv, struct iwl_rx_queue *rxq);
 216 int iwl_rx_agg_start(struct iwl_priv *priv, const u8 *addr, int tid, u16 ssn);
 217 int iwl_rx_agg_stop(struct iwl_priv *priv, const u8 *addr, int tid);
 218 /* FIXME: remove when TX is moved to iwl core */
 219 int iwl_rx_queue_restock(struct iwl_priv *priv);
 220 int iwl_rx_queue_space(const struct iwl_rx_queue *q);
 221 void iwl_rx_allocate(struct iwl_priv *priv);
 222 void iwl_tx_cmd_complete(struct iwl_priv *priv, struct iwl_rx_mem_buffer *rxb);
 223 int iwl_tx_queue_reclaim(struct iwl_priv *priv, int txq_id, int index);
 224 /* Handlers */
 225 void iwl_rx_missed_beacon_notif(struct iwl_priv *priv,
 226                                struct iwl_rx_mem_buffer *rxb);
 227 void iwl_rx_statistics(struct iwl_priv *priv,
 228                               struct iwl_rx_mem_buffer *rxb);
 229
 230 /* TX helpers */
 231
 232 /*****************************************************
 233 * TX
 234 ******************************************************/
 235 int iwl_txq_ctx_reset(struct iwl_priv *priv);
 236 int iwl_tx_skb(struct iwl_priv *priv, struct sk_buff *skb);
 237 /* FIXME: remove when free Tx is fully merged into iwlcore */
 238 int iwl_hw_txq_free_tfd(struct iwl_priv *priv, struct iwl_tx_queue *txq);
 239 void iwl_hw_txq_ctx_free(struct iwl_priv *priv);
 240 int iwl_hw_txq_attach_buf_to_tfd(struct iwl_priv *priv, void *tfd,
 241                                         dma_addr_t addr, u16 len);
 242 int iwl_txq_update_write_ptr(struct iwl_priv *priv, struct iwl_tx_queue *txq);
 243 int iwl_tx_agg_start(struct iwl_priv *priv, const u8 *ra, u16 tid, u16 *ssn);
 244 int iwl_tx_agg_stop(struct iwl_priv *priv , const u8 *ra, u16 tid);
 245 int iwl_txq_check_empty(struct iwl_priv *priv, int sta_id, u8 tid, int txq_id);
 246
 247 /*****************************************************
 248  * TX power
 249  ****************************************************/
 250 int iwl_set_tx_power(struct iwl_priv *priv, s8 tx_power, bool force);
 251
 252 /*****************************************************
 253  * RF -Kill - here and not in iwl-rfkill.h to be available when
 254  * RF-kill subsystem is not compiled.
 255  ****************************************************/
 256 void iwl_radio_kill_sw_disable_radio(struct iwl_priv *priv);
 257 int iwl_radio_kill_sw_enable_radio(struct iwl_priv *priv);
 258
 259 /*******************************************************************************
 260  * Rate
 261  ******************************************************************************/
 262
 263 void iwl_hwrate_to_tx_control(struct iwl_priv *priv, u32 rate_n_flags,
 264                               struct ieee80211_tx_info *info);
 265 int iwl_hwrate_to_plcp_idx(u32 rate_n_flags);
 266
 267 static inline u8 iwl_hw_get_rate(__le32 rate_n_flags)
 268 {
 269         return le32_to_cpu(rate_n_flags) & 0xFF;
 270 }
 271 static inline u32 iwl_hw_get_rate_n_flags(__le32 rate_n_flags)
 272 {
 273         return le32_to_cpu(rate_n_flags) & 0x1FFFF;
 274 }
 275 static inline __le32 iwl_hw_set_rate_n_flags(u8 rate, u32 flags)
 276 {
 277         return cpu_to_le32(flags|(u32)rate);
 278 }
 279
 280 /*******************************************************************************
 281  * Scanning
 282  ******************************************************************************/
 283 void iwl_init_scan_params(struct iwl_priv *priv);
 284 int iwl_scan_cancel(struct iwl_priv *priv);
 285 int iwl_scan_cancel_timeout(struct iwl_priv *priv, unsigned long ms);
 286 const char *iwl_escape_essid(const char *essid, u8 essid_len);
 287 int iwl_scan_initiate(struct iwl_priv *priv);
 288 void iwl_setup_rx_scan_handlers(struct iwl_priv *priv);
 289 void iwl_setup_scan_deferred_work(struct iwl_priv *priv);
 290
 291 /*******************************************************************************
 292  * Calibrations - implemented in iwl-calib.c
 293  ******************************************************************************/
 294 int iwl_send_calib_results(struct iwl_priv *priv);
 295 int iwl_calib_set(struct iwl_calib_result *res, const u8 *buf, int len);
 296 void iwl_calib_free_results(struct iwl_priv *priv);
 297
 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_print_event_log(struct iwl_priv *priv, u32 start_idx,
 320                          u32 num_events, u32 mode);
 321 void iwl_dump_nic_error_log(struct iwl_priv *priv);
 322 void iwl_dump_nic_event_log(struct iwl_priv *priv);
 323
 324 /*************** DRIVER STATUS FUNCTIONS   *****/
 325
 326 #define STATUS_HCMD_ACTIVE      0       /* host command in progress */
 327 #define STATUS_HCMD_SYNC_ACTIVE 1       /* sync host command in progress */
 328 #define STATUS_INT_ENABLED      2
 329 #define STATUS_RF_KILL_HW       3
 330 #define STATUS_RF_KILL_SW       4
 331 #define STATUS_INIT             5
 332 #define STATUS_ALIVE            6
 333 #define STATUS_READY            7
 334 #define STATUS_TEMPERATURE      8
 335 #define STATUS_GEO_CONFIGURED   9
 336 #define STATUS_EXIT_PENDING     10
 337 #define STATUS_IN_SUSPEND       11
 338 #define STATUS_STATISTICS       12
 339 #define STATUS_SCANNING         13
 340 #define STATUS_SCAN_ABORTING    14
 341 #define STATUS_SCAN_HW          15
 342 #define STATUS_POWER_PMI        16
 343 #define STATUS_FW_ERROR         17
 344 #define STATUS_CONF_PENDING     18
 345 #define STATUS_MODE_PENDING     19
 346
 347
 348 static inline int iwl_is_ready(struct iwl_priv *priv)
 349 {
 350         /* The adapter is 'ready' if READY and GEO_CONFIGURED bits are
 351          * set but EXIT_PENDING is not */
 352         return test_bit(STATUS_READY, &priv->status) &&
 353                test_bit(STATUS_GEO_CONFIGURED, &priv->status) &&
 354                !test_bit(STATUS_EXIT_PENDING, &priv->status);
 355 }
 356
 357 static inline int iwl_is_alive(struct iwl_priv *priv)
 358 {
 359         return test_bit(STATUS_ALIVE, &priv->status);
 360 }
 361
 362 static inline int iwl_is_init(struct iwl_priv *priv)
 363 {
 364         return test_bit(STATUS_INIT, &priv->status);
 365 }
 366
 367 static inline int iwl_is_rfkill_sw(struct iwl_priv *priv)
 368 {
 369         return test_bit(STATUS_RF_KILL_SW, &priv->status);
 370 }
 371
 372 static inline int iwl_is_rfkill_hw(struct iwl_priv *priv)
 373 {
 374         return test_bit(STATUS_RF_KILL_HW, &priv->status);
 375 }
 376
 377 static inline int iwl_is_rfkill(struct iwl_priv *priv)
 378 {
 379         return iwl_is_rfkill_hw(priv) || iwl_is_rfkill_sw(priv);
 380 }
 381
 382 static inline int iwl_is_ready_rf(struct iwl_priv *priv)
 383 {
 384
 385         if (iwl_is_rfkill(priv))
 386                 return 0;
 387
 388         return iwl_is_ready(priv);
 389 }
 390
 391 extern void iwl_rf_kill_ct_config(struct iwl_priv *priv);
 392 extern int iwl_send_statistics_request(struct iwl_priv *priv, u8 flags);
 393 extern int iwl_verify_ucode(struct iwl_priv *priv);
 394 extern int iwl_send_lq_cmd(struct iwl_priv *priv,
 395                 struct iwl_link_quality_cmd *lq, u8 flags);
 396 extern void iwl_rx_reply_rx(struct iwl_priv *priv,
 397                 struct iwl_rx_mem_buffer *rxb);
 398 extern void iwl_rx_reply_rx_phy(struct iwl_priv *priv,
 399                                     struct iwl_rx_mem_buffer *rxb);
 400 void iwl_rx_reply_compressed_ba(struct iwl_priv *priv,
 401                                            struct iwl_rx_mem_buffer *rxb);
 402
 403 static inline int iwl_send_rxon_assoc(struct iwl_priv *priv)
 404 {
 405         return priv->cfg->ops->hcmd->rxon_assoc(priv);
 406 }
 407
 408 static inline const struct ieee80211_supported_band *iwl_get_hw_mode(
 409                         struct iwl_priv *priv, enum ieee80211_band band)
 410 {
 411         return priv->hw->wiphy->bands[band];
 412 }
 413
 414 #endif /* __iwl_core_h__ */