diff options
Diffstat (limited to 'drivers/net/wireless/iwlwifi/iwl-3945-hw.h')
| -rw-r--r-- | drivers/net/wireless/iwlwifi/iwl-3945-hw.h | 94 |
1 files changed, 81 insertions, 13 deletions
diff --git a/drivers/net/wireless/iwlwifi/iwl-3945-hw.h b/drivers/net/wireless/iwlwifi/iwl-3945-hw.h index 8bbaa16442a5..2c9f884be032 100644 --- a/drivers/net/wireless/iwlwifi/iwl-3945-hw.h +++ b/drivers/net/wireless/iwlwifi/iwl-3945-hw.h @@ -85,24 +85,48 @@ #define IWL_RSSI_OFFSET 95 /* - * This file defines EEPROM related constants, enums, and inline functions. - * + * EEPROM related constants, enums, and structures. */ +/* + * EEPROM access time values: + * + * Driver initiates EEPROM read by writing byte address << 1 to CSR_EEPROM_REG, + * then clearing (with subsequent read/modify/write) CSR_EEPROM_REG bit + * CSR_EEPROM_REG_BIT_CMD (0x2). + * Driver then polls CSR_EEPROM_REG for CSR_EEPROM_REG_READ_VALID_MSK (0x1). + * When polling, wait 10 uSec between polling loops, up to a maximum 5000 uSec. + * Driver reads 16-bit value from bits 31-16 of CSR_EEPROM_REG. + */ #define IWL_EEPROM_ACCESS_TIMEOUT 5000 /* uSec */ #define IWL_EEPROM_ACCESS_DELAY 10 /* uSec */ + /* EEPROM field values */ #define ANTENNA_SWITCH_NORMAL 0 #define ANTENNA_SWITCH_INVERSE 1 +/* + * Regulatory channel usage flags in EEPROM struct iwl_eeprom_channel.flags. + * + * IBSS and/or AP operation is allowed *only* on those channels with + * (VALID && IBSS && ACTIVE && !RADAR). This restriction is in place because + * RADAR detection is not supported by the 3945 driver, but is a + * requirement for establishing a new network for legal operation on channels + * requiring RADAR detection or restricting ACTIVE scanning. + * + * NOTE: "WIDE" flag indicates that 20 MHz channel is supported; + * 3945 does not support FAT 40 MHz-wide channels. + * + * NOTE: Using a channel inappropriately will result in a uCode error! + */ enum { EEPROM_CHANNEL_VALID = (1 << 0), /* usable for this SKU/geo */ - EEPROM_CHANNEL_IBSS = (1 << 1), /* usable as an IBSS channel */ + EEPROM_CHANNEL_IBSS = (1 << 1), /* usable as an IBSS channel */ /* Bit 2 Reserved */ EEPROM_CHANNEL_ACTIVE = (1 << 3), /* active scanning allowed */ EEPROM_CHANNEL_RADAR = (1 << 4), /* radar detection required */ - EEPROM_CHANNEL_WIDE = (1 << 5), - EEPROM_CHANNEL_NARROW = (1 << 6), + EEPROM_CHANNEL_WIDE = (1 << 5), /* 20 MHz channel okay */ + EEPROM_CHANNEL_NARROW = (1 << 6), /* 10 MHz channel, not used */ EEPROM_CHANNEL_DFS = (1 << 7), /* dynamic freq selection candidate */ }; @@ -147,6 +171,7 @@ struct iwl3945_eeprom_channel { * long packets in normal operation to provide feedback as to proper output * level. * Data copied from EEPROM. + * DO NOT ALTER THIS STRUCTURE!!! */ struct iwl3945_eeprom_txpower_sample { u8 gain_index; /* index into power (gain) setup table ... */ @@ -163,11 +188,11 @@ struct iwl3945_eeprom_txpower_sample { * DO NOT ALTER THIS STRUCTURE!!! */ struct iwl3945_eeprom_txpower_group { - struct iwl3945_eeprom_txpower_sample samples[5]; /* 5 power levels */ + struct iwl3945_eeprom_txpower_sample samples[5]; /* 5 power levels */ s32 a, b, c, d, e; /* coefficients for voltage->power * formula (signed) */ s32 Fa, Fb, Fc, Fd, Fe; /* these modify coeffs based on - * frequency (signed) */ + * frequency (signed) */ s8 saturation_power; /* highest power possible by h/w in this * band */ u8 group_channel; /* "representative" channel # in this band */ @@ -189,6 +214,9 @@ struct iwl3945_eeprom_temperature_corr { u32 Te; } __attribute__ ((packed)); +/* + * EEPROM map + */ struct iwl3945_eeprom { u8 reserved0[16]; #define EEPROM_DEVICE_ID (2*0x08) /* 2 bytes */ @@ -229,29 +257,67 @@ struct iwl3945_eeprom { u8 reserved6[42]; #define EEPROM_REGULATORY_SKU_ID (2*0x60) /* 4 bytes */ u8 sku_id[4]; /* abs.ofs: 192 */ + +/* + * Per-channel regulatory data. + * + * Each channel that *might* be supported by 3945 or 4965 has a fixed location + * in EEPROM containing EEPROM_CHANNEL_* usage flags (LSB) and max regulatory + * txpower (MSB). + * + * Entries immediately below are for 20 MHz channel width. FAT (40 MHz) + * channels (only for 4965, not supported by 3945) appear later in the EEPROM. + * + * 2.4 GHz channels 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14 + */ #define EEPROM_REGULATORY_BAND_1 (2*0x62) /* 2 bytes */ u16 band_1_count; /* abs.ofs: 196 */ #define EEPROM_REGULATORY_BAND_1_CHANNELS (2*0x63) /* 28 bytes */ - struct iwl3945_eeprom_channel band_1_channels[14]; /* abs.ofs: 196 */ + struct iwl3945_eeprom_channel band_1_channels[14]; /* abs.ofs: 196 */ + +/* + * 4.9 GHz channels 183, 184, 185, 187, 188, 189, 192, 196, + * 5.0 GHz channels 7, 8, 11, 12, 16 + * (4915-5080MHz) (none of these is ever supported) + */ #define EEPROM_REGULATORY_BAND_2 (2*0x71) /* 2 bytes */ u16 band_2_count; /* abs.ofs: 226 */ #define EEPROM_REGULATORY_BAND_2_CHANNELS (2*0x72) /* 26 bytes */ - struct iwl3945_eeprom_channel band_2_channels[13]; /* abs.ofs: 228 */ + struct iwl3945_eeprom_channel band_2_channels[13]; /* abs.ofs: 228 */ + +/* + * 5.2 GHz channels 34, 36, 38, 40, 42, 44, 46, 48, 52, 56, 60, 64 + * (5170-5320MHz) + */ #define EEPROM_REGULATORY_BAND_3 (2*0x7F) /* 2 bytes */ u16 band_3_count; /* abs.ofs: 254 */ #define EEPROM_REGULATORY_BAND_3_CHANNELS (2*0x80) /* 24 bytes */ - struct iwl3945_eeprom_channel band_3_channels[12]; /* abs.ofs: 256 */ + struct iwl3945_eeprom_channel band_3_channels[12]; /* abs.ofs: 256 */ + +/* + * 5.5 GHz channels 100, 104, 108, 112, 116, 120, 124, 128, 132, 136, 140 + * (5500-5700MHz) + */ #define EEPROM_REGULATORY_BAND_4 (2*0x8C) /* 2 bytes */ u16 band_4_count; /* abs.ofs: 280 */ #define EEPROM_REGULATORY_BAND_4_CHANNELS (2*0x8D) /* 22 bytes */ - struct iwl3945_eeprom_channel band_4_channels[11]; /* abs.ofs: 282 */ + struct iwl3945_eeprom_channel band_4_channels[11]; /* abs.ofs: 282 */ + +/* + * 5.7 GHz channels 145, 149, 153, 157, 161, 165 + * (5725-5825MHz) + */ #define EEPROM_REGULATORY_BAND_5 (2*0x98) /* 2 bytes */ u16 band_5_count; /* abs.ofs: 304 */ #define EEPROM_REGULATORY_BAND_5_CHANNELS (2*0x99) /* 12 bytes */ - struct iwl3945_eeprom_channel band_5_channels[6]; /* abs.ofs: 306 */ + struct iwl3945_eeprom_channel band_5_channels[6]; /* abs.ofs: 306 */ u8 reserved9[194]; + +/* + * 3945 Txpower calibration data. + */ #define EEPROM_TXPOWER_CALIB_GROUP0 0x200 #define EEPROM_TXPOWER_CALIB_GROUP1 0x240 #define EEPROM_TXPOWER_CALIB_GROUP2 0x280 @@ -261,12 +327,14 @@ struct iwl3945_eeprom { struct iwl3945_eeprom_txpower_group groups[IWL_NUM_TX_CALIB_GROUPS]; /* abs.ofs: 512 */ #define EEPROM_CALIB_TEMPERATURE_CORRECT 0x340 - struct iwl3945_eeprom_temperature_corr corrections; /* abs.ofs: 832 */ + struct iwl3945_eeprom_temperature_corr corrections; /* abs.ofs: 832 */ u8 reserved16[172]; /* fill out to full 1024 byte block */ } __attribute__ ((packed)); #define IWL_EEPROM_IMAGE_SIZE 1024 +/* End of EEPROM */ + #include "iwl-3945-commands.h" |
