drivers/net/wireless/iwlwifi/iwl-3945.h

   1 /******************************************************************************
   2  *
   3  * Copyright(c) 2003 - 2010 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-3945.h) for driver implementation definitions.
  28  * Please use iwl-3945-commands.h for uCode API definitions.
  29  * Please use iwl-3945-hw.h for hardware-related definitions.
  30  */
  31
  32 #ifndef __iwl_3945_h__
  33 #define __iwl_3945_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 /* Hardware specific file defines the PCI IDs table for that hardware module */
  40 extern const struct pci_device_id iwl3945_hw_card_ids[];
  41
  42 #include "iwl-csr.h"
  43 #include "iwl-prph.h"
  44 #include "iwl-fh.h"
  45 #include "iwl-3945-hw.h"
  46 #include "iwl-debug.h"
  47 #include "iwl-power.h"
  48 #include "iwl-dev.h"
  49 #include "iwl-led.h"
  50
  51 /* Highest firmware API version supported */
  52 #define IWL3945_UCODE_API_MAX 2
  53
  54 /* Lowest firmware API version supported */
  55 #define IWL3945_UCODE_API_MIN 1
  56
  57 #define IWL3945_FW_PRE  "iwlwifi-3945-"
  58 #define _IWL3945_MODULE_FIRMWARE(api) IWL3945_FW_PRE #api ".ucode"
  59 #define IWL3945_MODULE_FIRMWARE(api) _IWL3945_MODULE_FIRMWARE(api)
  60
  61 /* Default noise level to report when noise measurement is not available.
  62  *   This may be because we're:
  63  *   1)  Not associated (4965, no beacon statistics being sent to driver)
  64  *   2)  Scanning (noise measurement does not apply to associated channel)
  65  *   3)  Receiving CCK (3945 delivers noise info only for OFDM frames)
  66  * Use default noise value of -127 ... this is below the range of measurable
  67  *   Rx dBm for either 3945 or 4965, so it can indicate "unmeasurable" to user.
  68  *   Also, -127 works better than 0 when averaging frames with/without
  69  *   noise info (e.g. averaging might be done in app); measured dBm values are
  70  *   always negative ... using a negative value as the default keeps all
  71  *   averages within an s8's (used in some apps) range of negative values. */
  72 #define IWL_NOISE_MEAS_NOT_AVAILABLE (-127)
  73
  74 /* Module parameters accessible from iwl-*.c */
  75 extern struct iwl_mod_params iwl3945_mod_params;
  76
  77 struct iwl3945_rate_scale_data {
  78         u64 data;
  79         s32 success_counter;
  80         s32 success_ratio;
  81         s32 counter;
  82         s32 average_tpt;
  83         unsigned long stamp;
  84 };
  85
  86 struct iwl3945_rs_sta {
  87         spinlock_t lock;
  88         struct iwl_priv *priv;
  89         s32 *expected_tpt;
  90         unsigned long last_partial_flush;
  91         unsigned long last_flush;
  92         u32 flush_time;
  93         u32 last_tx_packets;
  94         u32 tx_packets;
  95         u8 tgg;
  96         u8 flush_pending;
  97         u8 start_rate;
  98         struct timer_list rate_scale_flush;
  99         struct iwl3945_rate_scale_data win[IWL_RATE_COUNT_3945];
 100 #ifdef CONFIG_MAC80211_DEBUGFS
 101         struct dentry *rs_sta_dbgfs_stats_table_file;
 102 #endif
 103
 104         /* used to be in sta_info */
 105         int last_txrate_idx;
 106 };
 107
 108
 109 /*
 110  * The common struct MUST be first because it is shared between
 111  * 3945 and agn!
 112  */
 113 struct iwl3945_sta_priv {
 114         struct iwl_station_priv_common common;
 115         struct iwl3945_rs_sta rs_sta;
 116 };
 117
 118 enum iwl3945_antenna {
 119         IWL_ANTENNA_DIVERSITY,
 120         IWL_ANTENNA_MAIN,
 121         IWL_ANTENNA_AUX
 122 };
 123
 124 /*
 125  * RTS threshold here is total size [2347] minus 4 FCS bytes
 126  * Per spec:
 127  *   a value of 0 means RTS on all data/management packets
 128  *   a value > max MSDU size means no RTS
 129  * else RTS for data/management frames where MPDU is larger
 130  *   than RTS value.
 131  */
 132 #define DEFAULT_RTS_THRESHOLD     2347U
 133 #define MIN_RTS_THRESHOLD         0U
 134 #define MAX_RTS_THRESHOLD         2347U
 135 #define MAX_MSDU_SIZE             2304U
 136 #define MAX_MPDU_SIZE             2346U
 137 #define DEFAULT_BEACON_INTERVAL   100U
 138 #define DEFAULT_SHORT_RETRY_LIMIT 7U
 139 #define DEFAULT_LONG_RETRY_LIMIT  4U
 140
 141 #define IWL_TX_FIFO_AC0 0
 142 #define IWL_TX_FIFO_AC1 1
 143 #define IWL_TX_FIFO_AC2 2
 144 #define IWL_TX_FIFO_AC3 3
 145 #define IWL_TX_FIFO_HCCA_1      5
 146 #define IWL_TX_FIFO_HCCA_2      6
 147 #define IWL_TX_FIFO_NONE        7
 148
 149 #define IEEE80211_DATA_LEN              2304
 150 #define IEEE80211_4ADDR_LEN             30
 151 #define IEEE80211_HLEN                  (IEEE80211_4ADDR_LEN)
 152 #define IEEE80211_FRAME_LEN             (IEEE80211_DATA_LEN + IEEE80211_HLEN)
 153
 154 struct iwl3945_frame {
 155         union {
 156                 struct ieee80211_hdr frame;
 157                 struct iwl3945_tx_beacon_cmd beacon;
 158                 u8 raw[IEEE80211_FRAME_LEN];
 159                 u8 cmd[360];
 160         } u;
 161         struct list_head list;
 162 };
 163
 164 #define SEQ_TO_SN(seq) (((seq) & IEEE80211_SCTL_SEQ) >> 4)
 165 #define SN_TO_SEQ(ssn) (((ssn) << 4) & IEEE80211_SCTL_SEQ)
 166 #define MAX_SN ((IEEE80211_SCTL_SEQ) >> 4)
 167
 168 #define SUP_RATE_11A_MAX_NUM_CHANNELS  8
 169 #define SUP_RATE_11B_MAX_NUM_CHANNELS  4
 170 #define SUP_RATE_11G_MAX_NUM_CHANNELS  12
 171
 172 #define IWL_SUPPORTED_RATES_IE_LEN         8
 173
 174 #define SCAN_INTERVAL 100
 175
 176 #define MAX_TID_COUNT        9
 177
 178 #define IWL_INVALID_RATE     0xFF
 179 #define IWL_INVALID_VALUE    -1
 180
 181 #define STA_PS_STATUS_WAKE             0
 182 #define STA_PS_STATUS_SLEEP            1
 183
 184 struct iwl3945_ibss_seq {
 185         u8 mac[ETH_ALEN];
 186         u16 seq_num;
 187         u16 frag_num;
 188         unsigned long packet_time;
 189         struct list_head list;
 190 };
 191
 192 #define IWL_RX_HDR(x) ((struct iwl3945_rx_frame_hdr *)(\
 193                        x->u.rx_frame.stats.payload + \
 194                        x->u.rx_frame.stats.phy_count))
 195 #define IWL_RX_END(x) ((struct iwl3945_rx_frame_end *)(\
 196                        IWL_RX_HDR(x)->payload + \
 197                        le16_to_cpu(IWL_RX_HDR(x)->len)))
 198 #define IWL_RX_STATS(x) (&x->u.rx_frame.stats)
 199 #define IWL_RX_DATA(x) (IWL_RX_HDR(x)->payload)
 200
 201
 202 /******************************************************************************
 203  *
 204  * Functions implemented in iwl-base.c which are forward declared here
 205  * for use by iwl-*.c
 206  *
 207  *****************************************************************************/
 208 extern int iwl3945_calc_db_from_ratio(int sig_ratio);
 209 extern void iwl3945_rx_replenish(void *data);
 210 extern void iwl3945_rx_queue_reset(struct iwl_priv *priv, struct iwl_rx_queue *rxq);
 211 extern unsigned int iwl3945_fill_beacon_frame(struct iwl_priv *priv,
 212                                         struct ieee80211_hdr *hdr,int left);
 213 extern int iwl3945_dump_nic_event_log(struct iwl_priv *priv, bool full_log,
 214                                        char **buf, bool display);
 215 extern void iwl3945_dump_nic_error_log(struct iwl_priv *priv);
 216
 217 /******************************************************************************
 218  *
 219  * Functions implemented in iwl-[34]*.c which are forward declared here
 220  * for use by iwl-base.c
 221  *
 222  * NOTE:  The implementation of these functions are hardware specific
 223  * which is why they are in the hardware specific files (vs. iwl-base.c)
 224  *
 225  * Naming convention --
 226  * iwl3945_         <-- Its part of iwlwifi (should be changed to iwl3945_)
 227  * iwl3945_hw_      <-- Hardware specific (implemented in iwl-XXXX.c by all HW)
 228  * iwlXXXX_     <-- Hardware specific (implemented in iwl-XXXX.c for XXXX)
 229  * iwl3945_bg_      <-- Called from work queue context
 230  * iwl3945_mac_     <-- mac80211 callback
 231  *
 232  ****************************************************************************/
 233 extern void iwl3945_hw_rx_handler_setup(struct iwl_priv *priv);
 234 extern void iwl3945_hw_setup_deferred_work(struct iwl_priv *priv);
 235 extern void iwl3945_hw_cancel_deferred_work(struct iwl_priv *priv);
 236 extern int iwl3945_hw_rxq_stop(struct iwl_priv *priv);
 237 extern int iwl3945_hw_set_hw_params(struct iwl_priv *priv);
 238 extern int iwl3945_hw_nic_init(struct iwl_priv *priv);
 239 extern int iwl3945_hw_nic_stop_master(struct iwl_priv *priv);
 240 extern void iwl3945_hw_txq_ctx_free(struct iwl_priv *priv);
 241 extern void iwl3945_hw_txq_ctx_stop(struct iwl_priv *priv);
 242 extern int iwl3945_hw_nic_reset(struct iwl_priv *priv);
 243 extern int iwl3945_hw_txq_attach_buf_to_tfd(struct iwl_priv *priv,
 244                                             struct iwl_tx_queue *txq,
 245                                             dma_addr_t addr, u16 len,
 246                                             u8 reset, u8 pad);
 247 extern void iwl3945_hw_txq_free_tfd(struct iwl_priv *priv,
 248                                     struct iwl_tx_queue *txq);
 249 extern int iwl3945_hw_get_temperature(struct iwl_priv *priv);
 250 extern int iwl3945_hw_tx_queue_init(struct iwl_priv *priv,
 251                                 struct iwl_tx_queue *txq);
 252 extern unsigned int iwl3945_hw_get_beacon_cmd(struct iwl_priv *priv,
 253                                  struct iwl3945_frame *frame, u8 rate);
 254 void iwl3945_hw_build_tx_cmd_rate(struct iwl_priv *priv,
 255                                   struct iwl_device_cmd *cmd,
 256                                   struct ieee80211_tx_info *info,
 257                                   struct ieee80211_hdr *hdr,
 258                                   int sta_id, int tx_id);
 259 extern int iwl3945_hw_reg_send_txpower(struct iwl_priv *priv);
 260 extern int iwl3945_hw_reg_set_txpower(struct iwl_priv *priv, s8 power);
 261 extern void iwl3945_hw_rx_statistics(struct iwl_priv *priv,
 262                                  struct iwl_rx_mem_buffer *rxb);
 263 void iwl3945_reply_statistics(struct iwl_priv *priv,
 264                               struct iwl_rx_mem_buffer *rxb);
 265 extern void iwl3945_disable_events(struct iwl_priv *priv);
 266 extern int iwl4965_get_temperature(const struct iwl_priv *priv);
 267 extern void iwl3945_post_associate(struct iwl_priv *priv);
 268 extern void iwl3945_config_ap(struct iwl_priv *priv);
 269
 270 extern int iwl3945_commit_rxon(struct iwl_priv *priv,
 271                                struct iwl_rxon_context *ctx);
 272
 273 /**
 274  * iwl3945_hw_find_station - Find station id for a given BSSID
 275  * @bssid: MAC address of station ID to find
 276  *
 277  * NOTE:  This should not be hardware specific but the code has
 278  * not yet been merged into a single common layer for managing the
 279  * station tables.
 280  */
 281 extern u8 iwl3945_hw_find_station(struct iwl_priv *priv, const u8 *bssid);
 282
 283 extern struct ieee80211_ops iwl3945_hw_ops;
 284
 285 /*
 286  * Forward declare iwl-3945.c functions for iwl-base.c
 287  */
 288 extern __le32 iwl3945_get_antenna_flags(const struct iwl_priv *priv);
 289 extern int iwl3945_init_hw_rate_table(struct iwl_priv *priv);
 290 extern void iwl3945_reg_txpower_periodic(struct iwl_priv *priv);
 291 extern int iwl3945_txpower_set_from_eeprom(struct iwl_priv *priv);
 292
 293 extern const struct iwl_channel_info *iwl3945_get_channel_info(
 294         const struct iwl_priv *priv, enum ieee80211_band band, u16 channel);
 295
 296 extern int iwl3945_rs_next_rate(struct iwl_priv *priv, int rate);
 297
 298 /* scanning */
 299 int iwl3945_request_scan(struct iwl_priv *priv, struct ieee80211_vif *vif);
 300 void iwl3945_post_scan(struct iwl_priv *priv);
 301
 302 /* rates */
 303 extern const struct iwl3945_rate_info iwl3945_rates[IWL_RATE_COUNT_3945];
 304
 305 /* Requires full declaration of iwl_priv before including */
 306 #include "iwl-io.h"
 307
 308 #endif