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 "1.2.26k"
  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 };
  97
  98 struct iwl_lib_ops {
  99         /* set hw dependant perameters */
 100         int (*set_hw_params)(struct iwl_priv *priv);
 101         /* ucode shared memory */
 102         int (*alloc_shared_mem)(struct iwl_priv *priv);
 103         void (*free_shared_mem)(struct iwl_priv *priv);
 104         int (*shared_mem_rx_idx)(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         /* rfkill */
 132         int (*radio_kill_sw)(struct iwl_priv *priv, int disable_radio);
 133          /* power management */
 134         struct {
 135                 int (*init)(struct iwl_priv *priv);
 136                 int (*reset)(struct iwl_priv *priv);
 137                 void (*stop)(struct iwl_priv *priv);
 138                 void (*config)(struct iwl_priv *priv);
 139                 int (*set_pwr_src)(struct iwl_priv *priv, enum iwl_pwr_src src);
 140         } apm_ops;
 141         /* power */
 142         int (*set_power)(struct iwl_priv *priv, void *cmd);
 143         void (*update_chain_flags)(struct iwl_priv *priv);
 144         /* eeprom operations (as defined in iwl-eeprom.h) */
 145         struct iwl_eeprom_ops eeprom_ops;
 146 };
 147
 148 struct iwl_ops {
 149         const struct iwl_lib_ops *lib;
 150         const struct iwl_hcmd_ops *hcmd;
 151         const struct iwl_hcmd_utils_ops *utils;
 152 };
 153
 154 struct iwl_mod_params {
 155         int disable;            /* def: 0 = enable radio */
 156         int sw_crypto;          /* def: 0 = using hardware encryption */
 157         int debug;              /* def: 0 = minimal debug log messages */
 158         int disable_hw_scan;    /* def: 0 = use h/w scan */
 159         int num_of_queues;      /* def: HW dependent */
 160         int enable_qos;         /* def: 1 = use quality of service */
 161         int amsdu_size_8K;      /* def: 1 = enable 8K amsdu size */
 162         int antenna;            /* def: 0 = both antennas (use diversity) */
 163         int restart_fw;         /* def: 1 = restart firmware */
 164 };
 165
 166 struct iwl_cfg {
 167         const char *name;
 168         const char *fw_name;
 169         unsigned int sku;
 170         int eeprom_size;
 171         const struct iwl_ops *ops;
 172         const struct iwl_mod_params *mod_params;
 173 };
 174
 175 /***************************
 176  *   L i b                 *
 177  ***************************/
 178
 179 struct ieee80211_hw *iwl_alloc_all(struct iwl_cfg *cfg,
 180                 struct ieee80211_ops *hw_ops);
 181 void iwl_hw_detect(struct iwl_priv *priv);
 182
 183 void iwlcore_clear_stations_table(struct iwl_priv *priv);
 184 void iwl_free_calib_results(struct iwl_priv *priv);
 185 void iwl_reset_qos(struct iwl_priv *priv);
 186 void iwl_set_rxon_chain(struct iwl_priv *priv);
 187 int iwl_set_rxon_channel(struct iwl_priv *priv,
 188                                 enum ieee80211_band band,
 189                                 u16 channel);
 190 void iwl_set_rxon_ht(struct iwl_priv *priv, struct iwl_ht_info *ht_info);
 191 u8 iwl_is_fat_tx_allowed(struct iwl_priv *priv,
 192                          struct ieee80211_ht_info *sta_ht_inf);
 193 int iwl_hw_nic_init(struct iwl_priv *priv);
 194 int iwl_setup_mac(struct iwl_priv *priv);
 195 int iwl_init_drv(struct iwl_priv *priv);
 196 void iwl_uninit_drv(struct iwl_priv *priv);
 197 /* "keep warm" functions */
 198 int iwl_kw_init(struct iwl_priv *priv);
 199 int iwl_kw_alloc(struct iwl_priv *priv);
 200 void iwl_kw_free(struct iwl_priv *priv);
 201
 202 /*****************************************************
 203 * RX
 204 ******************************************************/
 205 void iwl_rx_queue_free(struct iwl_priv *priv, struct iwl_rx_queue *rxq);
 206 int iwl_rx_queue_alloc(struct iwl_priv *priv);
 207 void iwl_rx_handle(struct iwl_priv *priv);
 208 int iwl_rx_queue_update_write_ptr(struct iwl_priv *priv,
 209                                   struct iwl_rx_queue *q);
 210 void iwl_rx_queue_reset(struct iwl_priv *priv, struct iwl_rx_queue *rxq);
 211 void iwl_rx_replenish(struct iwl_priv *priv);
 212 int iwl_rx_init(struct iwl_priv *priv, struct iwl_rx_queue *rxq);
 213 /* FIXME: remove when TX is moved to iwl core */
 214 int iwl_rx_queue_restock(struct iwl_priv *priv);
 215 int iwl_rx_queue_space(const struct iwl_rx_queue *q);
 216 void iwl_rx_allocate(struct iwl_priv *priv);
 217 void iwl_tx_cmd_complete(struct iwl_priv *priv, struct iwl_rx_mem_buffer *rxb);
 218 int iwl_tx_queue_reclaim(struct iwl_priv *priv, int txq_id, int index);
 219 /* Handlers */
 220 void iwl_rx_missed_beacon_notif(struct iwl_priv *priv,
 221                                struct iwl_rx_mem_buffer *rxb);
 222
 223 /* TX helpers */
 224
 225 /*****************************************************
 226 * TX
 227 ******************************************************/
 228 int iwl_txq_ctx_reset(struct iwl_priv *priv);
 229 int iwl_tx_skb(struct iwl_priv *priv, struct sk_buff *skb);
 230 /* FIXME: remove when free Tx is fully merged into iwlcore */
 231 int iwl_hw_txq_free_tfd(struct iwl_priv *priv, struct iwl_tx_queue *txq);
 232 void iwl_hw_txq_ctx_free(struct iwl_priv *priv);
 233 int iwl_hw_txq_attach_buf_to_tfd(struct iwl_priv *priv, void *tfd,
 234                                         dma_addr_t addr, u16 len);
 235 int iwl_txq_update_write_ptr(struct iwl_priv *priv, struct iwl_tx_queue *txq);
 236 int iwl_tx_agg_start(struct iwl_priv *priv, const u8 *ra, u16 tid, u16 *ssn);
 237 int iwl_tx_agg_stop(struct iwl_priv *priv , const u8 *ra, u16 tid);
 238 int iwl_txq_check_empty(struct iwl_priv *priv, int sta_id, u8 tid, int txq_id);
 239
 240 /*****************************************************
 241  *   S e n d i n g     H o s t     C o m m a n d s   *
 242  *****************************************************/
 243
 244 const char *get_cmd_string(u8 cmd);
 245 int __must_check iwl_send_cmd_sync(struct iwl_priv *priv,
 246                                    struct iwl_host_cmd *cmd);
 247 int iwl_send_cmd(struct iwl_priv *priv, struct iwl_host_cmd *cmd);
 248 int __must_check iwl_send_cmd_pdu(struct iwl_priv *priv, u8 id,
 249                                   u16 len, const void *data);
 250 int iwl_send_cmd_pdu_async(struct iwl_priv *priv, u8 id, u16 len,
 251                            const void *data,
 252                            int (*callback)(struct iwl_priv *priv,
 253                                            struct iwl_cmd *cmd,
 254                                            struct sk_buff *skb));
 255
 256 int iwl_enqueue_hcmd(struct iwl_priv *priv, struct iwl_host_cmd *cmd);
 257
 258 /*****************************************************
 259 *  Error Handling Debugging
 260 ******************************************************/
 261 void iwl_print_event_log(struct iwl_priv *priv, u32 start_idx,
 262                          u32 num_events, u32 mode);
 263 void iwl_dump_nic_error_log(struct iwl_priv *priv);
 264 void iwl_dump_nic_event_log(struct iwl_priv *priv);
 265
 266 /*************** DRIVER STATUS FUNCTIONS   *****/
 267
 268 #define STATUS_HCMD_ACTIVE      0       /* host command in progress */
 269 #define STATUS_HCMD_SYNC_ACTIVE 1       /* sync host command in progress */
 270 #define STATUS_INT_ENABLED      2
 271 #define STATUS_RF_KILL_HW       3
 272 #define STATUS_RF_KILL_SW       4
 273 #define STATUS_INIT             5
 274 #define STATUS_ALIVE            6
 275 #define STATUS_READY            7
 276 #define STATUS_TEMPERATURE      8
 277 #define STATUS_GEO_CONFIGURED   9
 278 #define STATUS_EXIT_PENDING     10
 279 #define STATUS_IN_SUSPEND       11
 280 #define STATUS_STATISTICS       12
 281 #define STATUS_SCANNING         13
 282 #define STATUS_SCAN_ABORTING    14
 283 #define STATUS_SCAN_HW          15
 284 #define STATUS_POWER_PMI        16
 285 #define STATUS_FW_ERROR         17
 286 #define STATUS_CONF_PENDING     18
 287 #define STATUS_MODE_PENDING     19
 288
 289
 290 static inline int iwl_is_ready(struct iwl_priv *priv)
 291 {
 292         /* The adapter is 'ready' if READY and GEO_CONFIGURED bits are
 293          * set but EXIT_PENDING is not */
 294         return test_bit(STATUS_READY, &priv->status) &&
 295                test_bit(STATUS_GEO_CONFIGURED, &priv->status) &&
 296                !test_bit(STATUS_EXIT_PENDING, &priv->status);
 297 }
 298
 299 static inline int iwl_is_alive(struct iwl_priv *priv)
 300 {
 301         return test_bit(STATUS_ALIVE, &priv->status);
 302 }
 303
 304 static inline int iwl_is_init(struct iwl_priv *priv)
 305 {
 306         return test_bit(STATUS_INIT, &priv->status);
 307 }
 308
 309 static inline int iwl_is_rfkill(struct iwl_priv *priv)
 310 {
 311         return test_bit(STATUS_RF_KILL_HW, &priv->status) ||
 312                test_bit(STATUS_RF_KILL_SW, &priv->status);
 313 }
 314
 315 static inline int iwl_is_ready_rf(struct iwl_priv *priv)
 316 {
 317
 318         if (iwl_is_rfkill(priv))
 319                 return 0;
 320
 321         return iwl_is_ready(priv);
 322 }
 323
 324
 325 enum iwlcore_card_notify {
 326         IWLCORE_INIT_EVT = 0,
 327         IWLCORE_START_EVT = 1,
 328         IWLCORE_STOP_EVT = 2,
 329         IWLCORE_REMOVE_EVT = 3,
 330 };
 331
 332 int iwlcore_low_level_notify(struct iwl_priv *priv,
 333                              enum iwlcore_card_notify notify);
 334 extern int iwl_send_statistics_request(struct iwl_priv *priv, u8 flags);
 335 extern int iwl_verify_ucode(struct iwl_priv *priv);
 336 int iwl_send_lq_cmd(struct iwl_priv *priv,
 337                     struct iwl_link_quality_cmd *lq, u8 flags);
 338
 339 static inline int iwl_send_rxon_assoc(struct iwl_priv *priv)
 340 {
 341         return priv->cfg->ops->hcmd->rxon_assoc(priv);
 342 }
 343
 344 static inline const struct ieee80211_supported_band *iwl_get_hw_mode(
 345                         struct iwl_priv *priv, enum ieee80211_band band)
 346 {
 347         return priv->hw->wiphy->bands[band];
 348 }
 349
 350 #endif /* __iwl_core_h__ */