[IWLWIFI]: add iwlwifi wireless drivers

This patch adds the mac80211 based wireless drivers for the Intel
PRO/Wireless 3945ABG/BG Network Connection and Intel Wireless WiFi
Link AGN (4965) adapters.

[ Move driver into it's own directory -DaveM ]

Signed-off-by: Zhu Yi <yi.zhu@intel.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

1 files changed, 341 insertions, 0 deletions

diff --git a/drivers/net/wireless/iwlwifi/iwl-4965.h b/drivers/net/wireless/iwlwifi/iwl-4965.h
new file mode 100644
index 000000000000..4c700812b45b
--- /dev/null
+++ b/drivers/net/wireless/iwlwifi/iwl-4965.h
@@ -0,0 +1,341 @@
+/******************************************************************************
+ *
+ * Copyright(c) 2003 - 2007 Intel Corporation. All rights reserved.
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms of version 2 of the GNU General Public License as
+ * published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope that it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for
+ * more details.
+ *
+ * You should have received a copy of the GNU General Public License along with
+ * this program; if not, write to the Free Software Foundation, Inc.,
+ * 51 Franklin Street, Fifth Floor, Boston, MA 02110, USA
+ *
+ * The full GNU General Public License is included in this distribution in the
+ * file called LICENSE.
+ *
+ * Contact Information:
+ * James P. Ketrenos <ipw2100-admin@linux.intel.com>
+ * Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497
+ *
+ *****************************************************************************/
+#ifndef __iwl_4965_h__
+#define __iwl_4965_h__
+
+struct iwl_priv;
+struct sta_ht_info;
+
+/*
+ * Forward declare iwl-4965.c functions for iwl-base.c
+ */
+extern int iwl_eeprom_aqcuire_semaphore(struct iwl_priv *priv);
+extern void iwl_eeprom_release_semaphore(struct iwl_priv *priv);
+
+extern int iwl4965_tx_queue_update_wr_ptr(struct iwl_priv *priv,
+                                          struct iwl_tx_queue *txq,
+                                          u16 byte_cnt);
+extern void iwl4965_add_station(struct iwl_priv *priv, const u8 *addr,
+                                int is_ap);
+extern void iwl4965_set_rxon_ht(struct iwl_priv *priv,
+                                struct sta_ht_info *ht_info);
+
+extern void iwl4965_set_rxon_chain(struct iwl_priv *priv);
+extern int iwl4965_tx_cmd(struct iwl_priv *priv, struct iwl_cmd *out_cmd,
+                          u8 sta_id, dma_addr_t txcmd_phys,
+                          struct ieee80211_hdr *hdr, u8 hdr_len,
+                          struct ieee80211_tx_control *ctrl, void *sta_in);
+extern int iwl4965_init_hw_rates(struct iwl_priv *priv,
+                                 struct ieee80211_rate *rates);
+extern int iwl4965_alive_notify(struct iwl_priv *priv);
+extern void iwl4965_update_rate_scaling(struct iwl_priv *priv, u8 mode);
+extern void iwl4965_set_ht_add_station(struct iwl_priv *priv, u8 index);
+
+extern void iwl4965_chain_noise_reset(struct iwl_priv *priv);
+extern void iwl4965_init_sensitivity(struct iwl_priv *priv, u8 flags,
+                                     u8 force);
+extern int iwl4965_set_fat_chan_info(struct iwl_priv *priv, int phymode,
+                                u16 channel,
+                                const struct iwl_eeprom_channel *eeprom_ch,
+                                u8 fat_extension_channel);
+extern void iwl4965_rf_kill_ct_config(struct iwl_priv *priv);
+
+#ifdef CONFIG_IWLWIFI_HT
+#ifdef CONFIG_IWLWIFI_HT_AGG
+extern int iwl_mac_ht_tx_agg_start(struct ieee80211_hw *hw, u8 *da,
+                                   u16 tid, u16 *start_seq_num);
+extern int iwl_mac_ht_rx_agg_start(struct ieee80211_hw *hw, u8 *da,
+                                   u16 tid, u16 start_seq_num);
+extern int iwl_mac_ht_rx_agg_stop(struct ieee80211_hw *hw, u8 *da,
+                                  u16 tid, int generator);
+extern int iwl_mac_ht_tx_agg_stop(struct ieee80211_hw *hw, u8 *da,
+                                  u16 tid, int generator);
+extern void iwl4965_turn_off_agg(struct iwl_priv *priv, u8 tid);
+#endif /* CONFIG_IWLWIFI_HT_AGG */
+#endif /*CONFIG_IWLWIFI_HT */
+/* Structures, enum, and defines specific to the 4965 */
+
+#define IWL4965_KW_SIZE 0x1000  /*4k */
+
+struct iwl_kw {
+        dma_addr_t dma_addr;
+        void *v_addr;
+        size_t size;
+};
+
+#define TID_QUEUE_CELL_SPACING 50       /*mS */
+#define TID_QUEUE_MAX_SIZE     20
+#define TID_ROUND_VALUE        5        /* mS */
+#define TID_MAX_LOAD_COUNT     8
+
+#define TID_MAX_TIME_DIFF ((TID_QUEUE_MAX_SIZE - 1) * TID_QUEUE_CELL_SPACING)
+#define TIME_WRAP_AROUND(x, y) (((y) > (x)) ? (y) - (x) : (0-(x)) + (y))
+
+#define TID_ALL_ENABLED         0x7f
+#define TID_ALL_SPECIFIED       0xff
+#define TID_AGG_TPT_THREHOLD    0x0
+
+#define IWL_CHANNEL_WIDTH_20MHZ   0
+#define IWL_CHANNEL_WIDTH_40MHZ   1
+
+#define IWL_MIMO_PS_STATIC        0
+#define IWL_MIMO_PS_NONE          3
+#define IWL_MIMO_PS_DYNAMIC       1
+#define IWL_MIMO_PS_INVALID       2
+
+#define IWL_OPERATION_MODE_AUTO     0
+#define IWL_OPERATION_MODE_HT_ONLY  1
+#define IWL_OPERATION_MODE_MIXED    2
+#define IWL_OPERATION_MODE_20MHZ    3
+
+#define IWL_EXT_CHANNEL_OFFSET_AUTO   0
+#define IWL_EXT_CHANNEL_OFFSET_ABOVE  1
+#define IWL_EXT_CHANNEL_OFFSET_       2
+#define IWL_EXT_CHANNEL_OFFSET_BELOW  3
+#define IWL_EXT_CHANNEL_OFFSET_MAX    4
+
+#define NRG_NUM_PREV_STAT_L     20
+#define NUM_RX_CHAINS           (3)
+
+#define TX_POWER_IWL_ILLEGAL_VDET    -100000
+#define TX_POWER_IWL_ILLEGAL_VOLTAGE -10000
+#define TX_POWER_IWL_CLOSED_LOOP_MIN_POWER 18
+#define TX_POWER_IWL_CLOSED_LOOP_MAX_POWER 34
+#define TX_POWER_IWL_VDET_SLOPE_BELOW_NOMINAL 17
+#define TX_POWER_IWL_VDET_SLOPE_ABOVE_NOMINAL 20
+#define TX_POWER_IWL_NOMINAL_POWER            26
+#define TX_POWER_IWL_CLOSED_LOOP_ITERATION_LIMIT 1
+#define TX_POWER_IWL_VOLTAGE_CODES_PER_03V       7
+#define TX_POWER_IWL_DEGREES_PER_VDET_CODE       11
+#define IWL_TX_POWER_MAX_NUM_PA_MEASUREMENTS 1
+#define IWL_TX_POWER_CCK_COMPENSATION_B_STEP (9)
+#define IWL_TX_POWER_CCK_COMPENSATION_C_STEP (5)
+
+struct iwl_traffic_load {
+        unsigned long time_stamp;
+        u32 packet_count[TID_QUEUE_MAX_SIZE];
+        u8 queue_count;
+        u8 head;
+        u32 total;
+};
+
+#ifdef CONFIG_IWLWIFI_HT_AGG
+struct iwl_agg_control {
+        unsigned long next_retry;
+        u32 wait_for_agg_status;
+        u32 tid_retry;
+        u32 requested_ba;
+        u32 granted_ba;
+        u8 auto_agg;
+        u32 tid_traffic_load_threshold;
+        u32 ba_timeout;
+        struct iwl_traffic_load traffic_load[TID_MAX_LOAD_COUNT];
+};
+#endif                          /*CONFIG_IWLWIFI_HT_AGG */
+
+struct iwl_lq_mngr {
+#ifdef CONFIG_IWLWIFI_HT_AGG
+        struct iwl_agg_control agg_ctrl;
+#endif
+        spinlock_t lock;
+        s32 max_window_size;
+        s32 *expected_tpt;
+        u8 *next_higher_rate;
+        u8 *next_lower_rate;
+        unsigned long stamp;
+        unsigned long stamp_last;
+        u32 flush_time;
+        u32 tx_packets;
+        u8 lq_ready;
+};
+
+
+/* Sensitivity and chain noise calibration */
+#define INTERFERENCE_DATA_AVAILABLE     __constant_cpu_to_le32(1)
+#define INITIALIZATION_VALUE            0xFFFF
+#define CAL_NUM_OF_BEACONS              20
+#define MAXIMUM_ALLOWED_PATHLOSS        15
+
+/* Param table within SENSITIVITY_CMD */
+#define HD_MIN_ENERGY_CCK_DET_INDEX                 (0)
+#define HD_MIN_ENERGY_OFDM_DET_INDEX                (1)
+#define HD_AUTO_CORR32_X1_TH_ADD_MIN_INDEX          (2)
+#define HD_AUTO_CORR32_X1_TH_ADD_MIN_MRC_INDEX      (3)
+#define HD_AUTO_CORR40_X4_TH_ADD_MIN_MRC_INDEX      (4)
+#define HD_AUTO_CORR32_X4_TH_ADD_MIN_INDEX          (5)
+#define HD_AUTO_CORR32_X4_TH_ADD_MIN_MRC_INDEX      (6)
+#define HD_BARKER_CORR_TH_ADD_MIN_INDEX             (7)
+#define HD_BARKER_CORR_TH_ADD_MIN_MRC_INDEX         (8)
+#define HD_AUTO_CORR40_X4_TH_ADD_MIN_INDEX          (9)
+#define HD_OFDM_ENERGY_TH_IN_INDEX                  (10)
+
+#define SENSITIVITY_CMD_CONTROL_DEFAULT_TABLE   __constant_cpu_to_le16(0)
+#define SENSITIVITY_CMD_CONTROL_WORK_TABLE      __constant_cpu_to_le16(1)
+
+#define CHAIN_NOISE_MAX_DELTA_GAIN_CODE 3
+
+#define MAX_FA_OFDM  50
+#define MIN_FA_OFDM  5
+#define MAX_FA_CCK   50
+#define MIN_FA_CCK   5
+
+#define NRG_MIN_CCK  97
+#define NRG_MAX_CCK  0
+
+#define AUTO_CORR_MIN_OFDM        85
+#define AUTO_CORR_MIN_OFDM_MRC    170
+#define AUTO_CORR_MIN_OFDM_X1     105
+#define AUTO_CORR_MIN_OFDM_MRC_X1 220
+#define AUTO_CORR_MAX_OFDM        120
+#define AUTO_CORR_MAX_OFDM_MRC    210
+#define AUTO_CORR_MAX_OFDM_X1     140
+#define AUTO_CORR_MAX_OFDM_MRC_X1 270
+#define AUTO_CORR_STEP_OFDM       1
+
+#define AUTO_CORR_MIN_CCK      (125)
+#define AUTO_CORR_MAX_CCK      (200)
+#define AUTO_CORR_MIN_CCK_MRC  200
+#define AUTO_CORR_MAX_CCK_MRC  400
+#define AUTO_CORR_STEP_CCK     3
+#define AUTO_CORR_MAX_TH_CCK   160
+
+#define NRG_ALG                0
+#define AUTO_CORR_ALG          1
+#define NRG_DIFF               2
+#define NRG_STEP_CCK           2
+#define NRG_MARGIN             8
+#define MAX_NUMBER_CCK_NO_FA 100
+
+#define AUTO_CORR_CCK_MIN_VAL_DEF    (125)
+
+#define CHAIN_A             0
+#define CHAIN_B             1
+#define CHAIN_C             2
+#define CHAIN_NOISE_DELTA_GAIN_INIT_VAL 4
+#define ALL_BAND_FILTER                 0xFF00
+#define IN_BAND_FILTER                  0xFF
+#define MIN_AVERAGE_NOISE_MAX_VALUE     0xFFFFFFFF
+
+enum iwl_false_alarm_state {
+        IWL_FA_TOO_MANY = 0,
+        IWL_FA_TOO_FEW = 1,
+        IWL_FA_GOOD_RANGE = 2,
+};
+
+enum iwl_chain_noise_state {
+        IWL_CHAIN_NOISE_ALIVE = 0,  /* must be 0 */
+        IWL_CHAIN_NOISE_ACCUMULATE = 1,
+        IWL_CHAIN_NOISE_CALIBRATED = 2,
+};
+
+enum iwl_sensitivity_state {
+        IWL_SENS_CALIB_ALLOWED = 0,
+        IWL_SENS_CALIB_NEED_REINIT = 1,
+};
+
+enum iwl_calib_enabled_state {
+        IWL_CALIB_DISABLED = 0,  /* must be 0 */
+        IWL_CALIB_ENABLED = 1,
+};
+
+struct statistics_general_data {
+        u32 beacon_silence_rssi_a;
+        u32 beacon_silence_rssi_b;
+        u32 beacon_silence_rssi_c;
+        u32 beacon_energy_a;
+        u32 beacon_energy_b;
+        u32 beacon_energy_c;
+};
+
+/* Sensitivity calib data */
+struct iwl_sensitivity_data {
+        u32 auto_corr_ofdm;
+        u32 auto_corr_ofdm_mrc;
+        u32 auto_corr_ofdm_x1;
+        u32 auto_corr_ofdm_mrc_x1;
+        u32 auto_corr_cck;
+        u32 auto_corr_cck_mrc;
+
+        u32 last_bad_plcp_cnt_ofdm;
+        u32 last_fa_cnt_ofdm;
+        u32 last_bad_plcp_cnt_cck;
+        u32 last_fa_cnt_cck;
+
+        u32 nrg_curr_state;
+        u32 nrg_prev_state;
+        u32 nrg_value[10];
+        u8  nrg_silence_rssi[NRG_NUM_PREV_STAT_L];
+        u32 nrg_silence_ref;
+        u32 nrg_energy_idx;
+        u32 nrg_silence_idx;
+        u32 nrg_th_cck;
+        s32 nrg_auto_corr_silence_diff;
+        u32 num_in_cck_no_fa;
+        u32 nrg_th_ofdm;
+
+        u8 state;
+};
+
+/* Chain noise (differential Rx gain) calib data */
+struct iwl_chain_noise_data {
+        u8 state;
+        u16 beacon_count;
+        u32 chain_noise_a;
+        u32 chain_noise_b;
+        u32 chain_noise_c;
+        u32 chain_signal_a;
+        u32 chain_signal_b;
+        u32 chain_signal_c;
+        u8 disconn_array[NUM_RX_CHAINS];
+        u8 delta_gain_code[NUM_RX_CHAINS];
+        u8 radio_write;
+};
+
+/* IWL4965 */
+#define RATE_MCS_CODE_MSK 0x7
+#define RATE_MCS_MIMO_POS 3
+#define RATE_MCS_MIMO_MSK 0x8
+#define RATE_MCS_HT_DUP_POS 5
+#define RATE_MCS_HT_DUP_MSK 0x20
+#define RATE_MCS_FLAGS_POS 8
+#define RATE_MCS_HT_POS 8
+#define RATE_MCS_HT_MSK 0x100
+#define RATE_MCS_CCK_POS 9
+#define RATE_MCS_CCK_MSK 0x200
+#define RATE_MCS_GF_POS 10
+#define RATE_MCS_GF_MSK 0x400
+
+#define RATE_MCS_FAT_POS 11
+#define RATE_MCS_FAT_MSK 0x800
+#define RATE_MCS_DUP_POS 12
+#define RATE_MCS_DUP_MSK 0x1000
+#define RATE_MCS_SGI_POS 13
+#define RATE_MCS_SGI_MSK 0x2000
+
+#define EEPROM_SEM_TIMEOUT 10
+#define EEPROM_SEM_RETRY_LIMIT 1000
+
+#endif                          /* __iwl_4965_h__ */