drivers/net/wireless/iwlegacy/iwl-eeprom.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
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   8  * Copyright(c) 2008 - 2011 Intel Corporation. All rights reserved.
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  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.
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  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.
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  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  *  Intel Linux Wireless <ilw@linux.intel.com>
  29  * Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497
  30  *
  31  * BSD LICENSE
  32  *
  33  * Copyright(c) 2005 - 2011 Intel Corporation. All rights reserved.
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  41  *    notice, this list of conditions and the following disclaimer.
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  43  *    notice, this list of conditions and the following disclaimer in
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  45  *    distribution.
  46  *  * Neither the name Intel Corporation nor the names of its
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  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,
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  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_legacy_eeprom_h__
  64 #define __iwl_legacy_eeprom_h__
  65
  66 #include <net/mac80211.h>
  67
  68 struct iwl_priv;
  69
  70 /*
  71  * EEPROM access time values:
  72  *
  73  * Driver initiates EEPROM read by writing byte address << 1 to CSR_EEPROM_REG.
  74  * Driver then polls CSR_EEPROM_REG for CSR_EEPROM_REG_READ_VALID_MSK (0x1).
  75  * When polling, wait 10 uSec between polling loops, up to a maximum 5000 uSec.
  76  * Driver reads 16-bit value from bits 31-16 of CSR_EEPROM_REG.
  77  */
  78 #define IWL_EEPROM_ACCESS_TIMEOUT       5000 /* uSec */
  79
  80 #define IWL_EEPROM_SEM_TIMEOUT          10   /* microseconds */
  81 #define IWL_EEPROM_SEM_RETRY_LIMIT      1000 /* number of attempts (not time) */
  82
  83
  84 /*
  85  * Regulatory channel usage flags in EEPROM struct iwl4965_eeprom_channel.flags.
  86  *
  87  * IBSS and/or AP operation is allowed *only* on those channels with
  88  * (VALID && IBSS && ACTIVE && !RADAR).  This restriction is in place because
  89  * RADAR detection is not supported by the 4965 driver, but is a
  90  * requirement for establishing a new network for legal operation on channels
  91  * requiring RADAR detection or restricting ACTIVE scanning.
  92  *
  93  * NOTE:  "WIDE" flag does not indicate anything about "HT40" 40 MHz channels.
  94  *        It only indicates that 20 MHz channel use is supported; HT40 channel
  95  *        usage is indicated by a separate set of regulatory flags for each
  96  *        HT40 channel pair.
  97  *
  98  * NOTE:  Using a channel inappropriately will result in a uCode error!
  99  */
 100 #define IWL_NUM_TX_CALIB_GROUPS 5
 101 enum {
 102         EEPROM_CHANNEL_VALID = (1 << 0),        /* usable for this SKU/geo */
 103         EEPROM_CHANNEL_IBSS = (1 << 1),         /* usable as an IBSS channel */
 104         /* Bit 2 Reserved */
 105         EEPROM_CHANNEL_ACTIVE = (1 << 3),       /* active scanning allowed */
 106         EEPROM_CHANNEL_RADAR = (1 << 4),        /* radar detection required */
 107         EEPROM_CHANNEL_WIDE = (1 << 5),         /* 20 MHz channel okay */
 108         /* Bit 6 Reserved (was Narrow Channel) */
 109         EEPROM_CHANNEL_DFS = (1 << 7),  /* dynamic freq selection candidate */
 110 };
 111
 112 /* SKU Capabilities */
 113 /* 3945 only */
 114 #define EEPROM_SKU_CAP_SW_RF_KILL_ENABLE                (1 << 0)
 115 #define EEPROM_SKU_CAP_HW_RF_KILL_ENABLE                (1 << 1)
 116
 117 /* *regulatory* channel data format in eeprom, one for each channel.
 118  * There are separate entries for HT40 (40 MHz) vs. normal (20 MHz) channels. */
 119 struct iwl_eeprom_channel {
 120         u8 flags;               /* EEPROM_CHANNEL_* flags copied from EEPROM */
 121         s8 max_power_avg;       /* max power (dBm) on this chnl, limit 31 */
 122 } __packed;
 123
 124 /* 3945 Specific */
 125 #define EEPROM_3945_EEPROM_VERSION      (0x2f)
 126
 127 /* 4965 has two radio transmitters (and 3 radio receivers) */
 128 #define EEPROM_TX_POWER_TX_CHAINS      (2)
 129
 130 /* 4965 has room for up to 8 sets of txpower calibration data */
 131 #define EEPROM_TX_POWER_BANDS          (8)
 132
 133 /* 4965 factory calibration measures txpower gain settings for
 134  * each of 3 target output levels */
 135 #define EEPROM_TX_POWER_MEASUREMENTS   (3)
 136
 137 /* 4965 Specific */
 138 /* 4965 driver does not work with txpower calibration version < 5 */
 139 #define EEPROM_4965_TX_POWER_VERSION    (5)
 140 #define EEPROM_4965_EEPROM_VERSION      (0x2f)
 141 #define EEPROM_4965_CALIB_VERSION_OFFSET       (2*0xB6) /* 2 bytes */
 142 #define EEPROM_4965_CALIB_TXPOWER_OFFSET       (2*0xE8) /* 48  bytes */
 143 #define EEPROM_4965_BOARD_REVISION             (2*0x4F) /* 2 bytes */
 144 #define EEPROM_4965_BOARD_PBA                  (2*0x56+1) /* 9 bytes */
 145
 146 /* 2.4 GHz */
 147 extern const u8 iwlegacy_eeprom_band_1[14];
 148
 149 /*
 150  * factory calibration data for one txpower level, on one channel,
 151  * measured on one of the 2 tx chains (radio transmitter and associated
 152  * antenna).  EEPROM contains:
 153  *
 154  * 1)  Temperature (degrees Celsius) of device when measurement was made.
 155  *
 156  * 2)  Gain table index used to achieve the target measurement power.
 157  *     This refers to the "well-known" gain tables (see iwl-4965-hw.h).
 158  *
 159  * 3)  Actual measured output power, in half-dBm ("34" = 17 dBm).
 160  *
 161  * 4)  RF power amplifier detector level measurement (not used).
 162  */
 163 struct iwl_eeprom_calib_measure {
 164         u8 temperature;         /* Device temperature (Celsius) */
 165         u8 gain_idx;            /* Index into gain table */
 166         u8 actual_pow;          /* Measured RF output power, half-dBm */
 167         s8 pa_det;              /* Power amp detector level (not used) */
 168 } __packed;
 169
 170
 171 /*
 172  * measurement set for one channel.  EEPROM contains:
 173  *
 174  * 1)  Channel number measured
 175  *
 176  * 2)  Measurements for each of 3 power levels for each of 2 radio transmitters
 177  *     (a.k.a. "tx chains") (6 measurements altogether)
 178  */
 179 struct iwl_eeprom_calib_ch_info {
 180         u8 ch_num;
 181         struct iwl_eeprom_calib_measure
 182                 measurements[EEPROM_TX_POWER_TX_CHAINS]
 183                         [EEPROM_TX_POWER_MEASUREMENTS];
 184 } __packed;
 185
 186 /*
 187  * txpower subband info.
 188  *
 189  * For each frequency subband, EEPROM contains the following:
 190  *
 191  * 1)  First and last channels within range of the subband.  "0" values
 192  *     indicate that this sample set is not being used.
 193  *
 194  * 2)  Sample measurement sets for 2 channels close to the range endpoints.
 195  */
 196 struct iwl_eeprom_calib_subband_info {
 197         u8 ch_from;     /* channel number of lowest channel in subband */
 198         u8 ch_to;       /* channel number of highest channel in subband */
 199         struct iwl_eeprom_calib_ch_info ch1;
 200         struct iwl_eeprom_calib_ch_info ch2;
 201 } __packed;
 202
 203
 204 /*
 205  * txpower calibration info.  EEPROM contains:
 206  *
 207  * 1)  Factory-measured saturation power levels (maximum levels at which
 208  *     tx power amplifier can output a signal without too much distortion).
 209  *     There is one level for 2.4 GHz band and one for 5 GHz band.  These
 210  *     values apply to all channels within each of the bands.
 211  *
 212  * 2)  Factory-measured power supply voltage level.  This is assumed to be
 213  *     constant (i.e. same value applies to all channels/bands) while the
 214  *     factory measurements are being made.
 215  *
 216  * 3)  Up to 8 sets of factory-measured txpower calibration values.
 217  *     These are for different frequency ranges, since txpower gain
 218  *     characteristics of the analog radio circuitry vary with frequency.
 219  *
 220  *     Not all sets need to be filled with data;
 221  *     struct iwl_eeprom_calib_subband_info contains range of channels
 222  *     (0 if unused) for each set of data.
 223  */
 224 struct iwl_eeprom_calib_info {
 225         u8 saturation_power24;  /* half-dBm (e.g. "34" = 17 dBm) */
 226         u8 saturation_power52;  /* half-dBm */
 227         __le16 voltage;         /* signed */
 228         struct iwl_eeprom_calib_subband_info
 229                 band_info[EEPROM_TX_POWER_BANDS];
 230 } __packed;
 231
 232
 233 /* General */
 234 #define EEPROM_DEVICE_ID                    (2*0x08)    /* 2 bytes */
 235 #define EEPROM_MAC_ADDRESS                  (2*0x15)    /* 6  bytes */
 236 #define EEPROM_BOARD_REVISION               (2*0x35)    /* 2  bytes */
 237 #define EEPROM_BOARD_PBA_NUMBER             (2*0x3B+1)  /* 9  bytes */
 238 #define EEPROM_VERSION                      (2*0x44)    /* 2  bytes */
 239 #define EEPROM_SKU_CAP                      (2*0x45)    /* 2  bytes */
 240 #define EEPROM_OEM_MODE                     (2*0x46)    /* 2  bytes */
 241 #define EEPROM_WOWLAN_MODE                  (2*0x47)    /* 2  bytes */
 242 #define EEPROM_RADIO_CONFIG                 (2*0x48)    /* 2  bytes */
 243 #define EEPROM_NUM_MAC_ADDRESS              (2*0x4C)    /* 2  bytes */
 244
 245 /* The following masks are to be applied on EEPROM_RADIO_CONFIG */
 246 #define EEPROM_RF_CFG_TYPE_MSK(x)   (x & 0x3)         /* bits 0-1   */
 247 #define EEPROM_RF_CFG_STEP_MSK(x)   ((x >> 2)  & 0x3) /* bits 2-3   */
 248 #define EEPROM_RF_CFG_DASH_MSK(x)   ((x >> 4)  & 0x3) /* bits 4-5   */
 249 #define EEPROM_RF_CFG_PNUM_MSK(x)   ((x >> 6)  & 0x3) /* bits 6-7   */
 250 #define EEPROM_RF_CFG_TX_ANT_MSK(x) ((x >> 8)  & 0xF) /* bits 8-11  */
 251 #define EEPROM_RF_CFG_RX_ANT_MSK(x) ((x >> 12) & 0xF) /* bits 12-15 */
 252
 253 #define EEPROM_3945_RF_CFG_TYPE_MAX  0x0
 254 #define EEPROM_4965_RF_CFG_TYPE_MAX  0x1
 255
 256 /*
 257  * Per-channel regulatory data.
 258  *
 259  * Each channel that *might* be supported by iwl has a fixed location
 260  * in EEPROM containing EEPROM_CHANNEL_* usage flags (LSB) and max regulatory
 261  * txpower (MSB).
 262  *
 263  * Entries immediately below are for 20 MHz channel width.  HT40 (40 MHz)
 264  * channels (only for 4965, not supported by 3945) appear later in the EEPROM.
 265  *
 266  * 2.4 GHz channels 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14
 267  */
 268 #define EEPROM_REGULATORY_SKU_ID            (2*0x60)    /* 4  bytes */
 269 #define EEPROM_REGULATORY_BAND_1            (2*0x62)    /* 2  bytes */
 270 #define EEPROM_REGULATORY_BAND_1_CHANNELS   (2*0x63)    /* 28 bytes */
 271
 272 /*
 273  * 4.9 GHz channels 183, 184, 185, 187, 188, 189, 192, 196,
 274  * 5.0 GHz channels 7, 8, 11, 12, 16
 275  * (4915-5080MHz) (none of these is ever supported)
 276  */
 277 #define EEPROM_REGULATORY_BAND_2            (2*0x71)    /* 2  bytes */
 278 #define EEPROM_REGULATORY_BAND_2_CHANNELS   (2*0x72)    /* 26 bytes */
 279
 280 /*
 281  * 5.2 GHz channels 34, 36, 38, 40, 42, 44, 46, 48, 52, 56, 60, 64
 282  * (5170-5320MHz)
 283  */
 284 #define EEPROM_REGULATORY_BAND_3            (2*0x7F)    /* 2  bytes */
 285 #define EEPROM_REGULATORY_BAND_3_CHANNELS   (2*0x80)    /* 24 bytes */
 286
 287 /*
 288  * 5.5 GHz channels 100, 104, 108, 112, 116, 120, 124, 128, 132, 136, 140
 289  * (5500-5700MHz)
 290  */
 291 #define EEPROM_REGULATORY_BAND_4            (2*0x8C)    /* 2  bytes */
 292 #define EEPROM_REGULATORY_BAND_4_CHANNELS   (2*0x8D)    /* 22 bytes */
 293
 294 /*
 295  * 5.7 GHz channels 145, 149, 153, 157, 161, 165
 296  * (5725-5825MHz)
 297  */
 298 #define EEPROM_REGULATORY_BAND_5            (2*0x98)    /* 2  bytes */
 299 #define EEPROM_REGULATORY_BAND_5_CHANNELS   (2*0x99)    /* 12 bytes */
 300
 301 /*
 302  * 2.4 GHz HT40 channels 1 (5), 2 (6), 3 (7), 4 (8), 5 (9), 6 (10), 7 (11)
 303  *
 304  * The channel listed is the center of the lower 20 MHz half of the channel.
 305  * The overall center frequency is actually 2 channels (10 MHz) above that,
 306  * and the upper half of each HT40 channel is centered 4 channels (20 MHz) away
 307  * from the lower half; e.g. the upper half of HT40 channel 1 is channel 5,
 308  * and the overall HT40 channel width centers on channel 3.
 309  *
 310  * NOTE:  The RXON command uses 20 MHz channel numbers to specify the
 311  *        control channel to which to tune.  RXON also specifies whether the
 312  *        control channel is the upper or lower half of a HT40 channel.
 313  *
 314  * NOTE:  4965 does not support HT40 channels on 2.4 GHz.
 315  */
 316 #define EEPROM_4965_REGULATORY_BAND_24_HT40_CHANNELS (2*0xA0)   /* 14 bytes */
 317
 318 /*
 319  * 5.2 GHz HT40 channels 36 (40), 44 (48), 52 (56), 60 (64),
 320  * 100 (104), 108 (112), 116 (120), 124 (128), 132 (136), 149 (153), 157 (161)
 321  */
 322 #define EEPROM_4965_REGULATORY_BAND_52_HT40_CHANNELS (2*0xA8)   /* 22 bytes */
 323
 324 #define EEPROM_REGULATORY_BAND_NO_HT40                  (0)
 325
 326 struct iwl_eeprom_ops {
 327         const u32 regulatory_bands[7];
 328         int (*acquire_semaphore) (struct iwl_priv *priv);
 329         void (*release_semaphore) (struct iwl_priv *priv);
 330 };
 331
 332
 333 int iwl_legacy_eeprom_init(struct iwl_priv *priv);
 334 void iwl_legacy_eeprom_free(struct iwl_priv *priv);
 335 const u8 *iwl_legacy_eeprom_query_addr(const struct iwl_priv *priv,
 336                                         size_t offset);
 337 u16 iwl_legacy_eeprom_query16(const struct iwl_priv *priv, size_t offset);
 338 int iwl_legacy_init_channel_map(struct iwl_priv *priv);
 339 void iwl_legacy_free_channel_map(struct iwl_priv *priv);
 340 const struct iwl_channel_info *iwl_legacy_get_channel_info(
 341                 const struct iwl_priv *priv,
 342                 enum ieee80211_band band, u16 channel);
 343
 344 #endif  /* __iwl_legacy_eeprom_h__ */