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iwlwifi: Document 4965 rate_n_flags bits
Document 4965 rate_n_flags bits Signed-off-by: Ben Cahill <ben.m.cahill@intel.com> Signed-off-by: Zhu Yi <yi.zhu@intel.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
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Ben Cahill
David S. Miller
parent
bc47279f55
commit
abceddb407
@ -141,7 +141,8 @@ enum {
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/******************************************************************************
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* (0)
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* Header
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* Commonly used structures and definitions:
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* Command header, rate_n_flags
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*
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*****************************************************************************/
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@ -167,6 +168,89 @@ struct iwl4965_cmd_header {
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u8 data[0];
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} __attribute__ ((packed));
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/**
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* 4965 rate_n_flags bit fields
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*
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* rate_n_flags format is used in following 4965 commands:
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* REPLY_4965_RX (response only)
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* REPLY_TX (both command and response)
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* REPLY_TX_LINK_QUALITY_CMD
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*
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* High-throughput (HT) rate format for bits 7:0 (bit 8 must be "1"):
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* 2-0: 0) 6 Mbps
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* 1) 12 Mbps
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* 2) 18 Mbps
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* 3) 24 Mbps
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* 4) 36 Mbps
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* 5) 48 Mbps
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* 6) 54 Mbps
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* 7) 60 Mbps
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*
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* 3: 0) Single stream (SISO)
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* 1) Dual stream (MIMO)
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*
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* 5: Value of 0x20 in bits 7:0 indicates 6 Mbps FAT duplicate data
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*
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* Legacy OFDM rate format for bits 7:0 (bit 8 must be "0", bit 9 "0"):
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* 3-0: 0xD) 6 Mbps
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* 0xF) 9 Mbps
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* 0x5) 12 Mbps
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* 0x7) 18 Mbps
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* 0x9) 24 Mbps
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* 0xB) 36 Mbps
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* 0x1) 48 Mbps
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* 0x3) 54 Mbps
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*
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* Legacy CCK rate format for bits 7:0 (bit 8 must be "0", bit 9 "1"):
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* 3-0: 10) 1 Mbps
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* 20) 2 Mbps
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* 55) 5.5 Mbps
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* 110) 11 Mbps
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*/
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#define RATE_MCS_CODE_MSK 0x7
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#define RATE_MCS_MIMO_POS 3
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#define RATE_MCS_MIMO_MSK 0x8
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#define RATE_MCS_HT_DUP_POS 5
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#define RATE_MCS_HT_DUP_MSK 0x20
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/* (1) HT format, (0) legacy format in bits 7:0 */
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#define RATE_MCS_FLAGS_POS 8
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#define RATE_MCS_HT_POS 8
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#define RATE_MCS_HT_MSK 0x100
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/* (1) CCK, (0) OFDM. HT (bit 8) must be "0" for this bit to be valid */
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#define RATE_MCS_CCK_POS 9
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#define RATE_MCS_CCK_MSK 0x200
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/* (1) Use Green Field preamble */
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#define RATE_MCS_GF_POS 10
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#define RATE_MCS_GF_MSK 0x400
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/* (1) Use 40Mhz FAT channel width, (0) use 20 MHz legacy channel width */
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#define RATE_MCS_FAT_POS 11
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#define RATE_MCS_FAT_MSK 0x800
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/* (1) Duplicate data on both 20MHz channels. FAT (bit 11) must be set. */
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#define RATE_MCS_DUP_POS 12
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#define RATE_MCS_DUP_MSK 0x1000
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/* (1) Short guard interval (0.4 usec), (0) normal GI (0.8 usec) */
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#define RATE_MCS_SGI_POS 13
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#define RATE_MCS_SGI_MSK 0x2000
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/**
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* rate_n_flags Tx antenna masks (4965 has 2 transmitters):
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* bit14:15 01 B inactive, A active
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* 10 B active, A inactive
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* 11 Both active
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*/
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#define RATE_MCS_ANT_A_POS 14
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#define RATE_MCS_ANT_B_POS 15
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#define RATE_MCS_ANT_A_MSK 0x4000
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#define RATE_MCS_ANT_B_MSK 0x8000
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#define RATE_MCS_ANT_AB_MSK 0xc000
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/******************************************************************************
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* (0a)
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* Alive and Error Commands & Responses:
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@ -452,18 +536,6 @@ struct iwl4965_qosparam_cmd {
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#define STA_MODIFY_DELBA_TID_MSK 0x10
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#define BUILD_RAxTID(sta_id, tid) (((sta_id) << 4) + (tid))
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/*
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* Antenna masks:
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* bit14:15 01 B inactive, A active
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* 10 B active, A inactive
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* 11 Both active
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*/
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#define RATE_MCS_ANT_A_POS 14
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#define RATE_MCS_ANT_B_POS 15
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#define RATE_MCS_ANT_A_MSK 0x4000
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#define RATE_MCS_ANT_B_MSK 0x8000
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#define RATE_MCS_ANT_AB_MSK 0xc000
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struct iwl4965_keyinfo {
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__le16 key_flags;
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u8 tkip_rx_tsc_byte2; /* TSC[2] for key mix ph1 detection */
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@ -883,6 +883,11 @@ struct iwl4965_traffic_load {
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};
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#ifdef CONFIG_IWL4965_HT_AGG
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/**
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* struct iwl4965_agg_control
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* @requested_ba: bit map of tids requesting aggregation/block-ack
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* @granted_ba: bit map of tids granted aggregation/block-ack
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*/
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struct iwl4965_agg_control {
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unsigned long next_retry;
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u32 wait_for_agg_status;
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@ -1054,29 +1059,8 @@ struct iwl4965_chain_noise_data {
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u8 radio_write;
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};
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/* IWL4965 */
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#define RATE_MCS_CODE_MSK 0x7
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#define RATE_MCS_MIMO_POS 3
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#define RATE_MCS_MIMO_MSK 0x8
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#define RATE_MCS_HT_DUP_POS 5
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#define RATE_MCS_HT_DUP_MSK 0x20
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#define RATE_MCS_FLAGS_POS 8
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#define RATE_MCS_HT_POS 8
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#define RATE_MCS_HT_MSK 0x100
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#define RATE_MCS_CCK_POS 9
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#define RATE_MCS_CCK_MSK 0x200
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#define RATE_MCS_GF_POS 10
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#define RATE_MCS_GF_MSK 0x400
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#define RATE_MCS_FAT_POS 11
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#define RATE_MCS_FAT_MSK 0x800
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#define RATE_MCS_DUP_POS 12
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#define RATE_MCS_DUP_MSK 0x1000
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#define RATE_MCS_SGI_POS 13
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#define RATE_MCS_SGI_MSK 0x2000
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#define EEPROM_SEM_TIMEOUT 10
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#define EEPROM_SEM_RETRY_LIMIT 1000
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#define EEPROM_SEM_TIMEOUT 10 /* milliseconds */
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#define EEPROM_SEM_RETRY_LIMIT 1000 /* number of attempts (not time) */
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#ifdef CONFIG_IWL4965_SPECTRUM_MEASUREMENT
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