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iwlwifi: comments cleanup
No code or function changes, just some cleanup work for out-of-date comments Signed-off-by: Wey-Yi Guy <wey-yi.w.guy@intel.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
This commit is contained in:
Wey-Yi Guy
John W. Linville
parent
5c673fbf19
commit
767d055d6a
@ -62,7 +62,7 @@
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*****************************************************************************/
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/*
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* Please use this file (iwl-commands.h) only for uCode API definitions.
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* Please use iwl-4965-hw.h for hardware-related definitions.
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* Please use iwl-xxxx-hw.h for hardware-related definitions.
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* Please use iwl-dev.h for driver implementation definitions.
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*/
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@ -1056,7 +1056,8 @@ struct sta_id_modify {
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*
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* The device contains an internal table of per-station information,
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* with info on security keys, aggregation parameters, and Tx rates for
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* initial Tx attempt and any retries (4965 uses REPLY_TX_LINK_QUALITY_CMD,
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* initial Tx attempt and any retries (agn devices uses
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* REPLY_TX_LINK_QUALITY_CMD,
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* 3945 uses REPLY_RATE_SCALE to set up rate tables).
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*
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* REPLY_ADD_STA sets up the table entry for one station, either creating
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@ -1427,12 +1428,12 @@ struct iwl_rx_mpdu_res_start {
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* uCode handles all timing and protocol related to control frames
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* (RTS/CTS/ACK), based on flags in the Tx command. uCode and Tx scheduler
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* handle reception of block-acks; uCode updates the host driver via
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* REPLY_COMPRESSED_BA (4965).
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* REPLY_COMPRESSED_BA.
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*
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* uCode handles retrying Tx when an ACK is expected but not received.
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* This includes trying lower data rates than the one requested in the Tx
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* command, as set up by the REPLY_RATE_SCALE (for 3945) or
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* REPLY_TX_LINK_QUALITY_CMD (4965).
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* REPLY_TX_LINK_QUALITY_CMD (agn).
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*
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* Driver sets up transmit power for various rates via REPLY_TX_PWR_TABLE_CMD.
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* This command must be executed after every RXON command, before Tx can occur.
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@ -1468,7 +1469,7 @@ struct iwl_rx_mpdu_res_start {
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* Set this for unicast frames, but not broadcast/multicast. */
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#define TX_CMD_FLG_ACK_MSK cpu_to_le32(1 << 3)
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/* For 4965:
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/* For agn devices:
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* 1: Use rate scale table (see REPLY_TX_LINK_QUALITY_CMD).
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* Tx command's initial_rate_index indicates first rate to try;
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* uCode walks through table for additional Tx attempts.
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@ -1487,7 +1488,7 @@ struct iwl_rx_mpdu_res_start {
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*/
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#define TX_CMD_FLG_FULL_TXOP_PROT_MSK cpu_to_le32(1 << 7)
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/* Tx antenna selection field; used only for 3945, reserved (0) for 4965.
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/* Tx antenna selection field; used only for 3945, reserved (0) for agn devices.
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* Set field to "0" to allow 3945 uCode to select antenna (normal usage). */
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#define TX_CMD_FLG_ANT_SEL_MSK cpu_to_le32(0xf00)
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#define TX_CMD_FLG_ANT_A_MSK cpu_to_le32(1 << 8)
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@ -1870,9 +1871,10 @@ enum {
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* frame in this new agg block failed in previous agg block(s).
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*
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* Note that, for aggregation, ACK (block-ack) status is not delivered here;
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* block-ack has not been received by the time the 4965 records this status.
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* block-ack has not been received by the time the agn device records
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* this status.
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* This status relates to reasons the tx might have been blocked or aborted
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* within the sending station (this 4965), rather than whether it was
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* within the sending station (this agn device), rather than whether it was
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* received successfully by the destination station.
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*/
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struct agg_tx_status {
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@ -2140,14 +2142,16 @@ struct iwl_link_qual_agg_params {
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/*
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* REPLY_TX_LINK_QUALITY_CMD = 0x4e (command, has simple generic response)
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*
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* For 4965 only; 3945 uses REPLY_RATE_SCALE.
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* For agn devices only; 3945 uses REPLY_RATE_SCALE.
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*
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* Each station in the 4965's internal station table has its own table of 16
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* Each station in the agn device's internal station table has its own table
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* of 16
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* Tx rates and modulation modes (e.g. legacy/SISO/MIMO) for retrying Tx when
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* an ACK is not received. This command replaces the entire table for
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* one station.
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*
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* NOTE: Station must already be in 4965's station table. Use REPLY_ADD_STA.
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* NOTE: Station must already be in agn device's station table.
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* Use REPLY_ADD_STA.
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*
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* The rate scaling procedures described below work well. Of course, other
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* procedures are possible, and may work better for particular environments.
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@ -2184,12 +2188,12 @@ struct iwl_link_qual_agg_params {
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*
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* ACCUMULATING HISTORY
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*
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* The rate scaling algorithm for 4965, as implemented in Linux driver, uses
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* two sets of frame Tx success history: One for the current/active modulation
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* mode, and one for a speculative/search mode that is being attempted. If the
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* speculative mode turns out to be more effective (i.e. actual transfer
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* rate is better), then the driver continues to use the speculative mode
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* as the new current active mode.
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* The rate scaling algorithm for agn devices, as implemented in Linux driver,
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* uses two sets of frame Tx success history: One for the current/active
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* modulation mode, and one for a speculative/search mode that is being
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* attempted. If the speculative mode turns out to be more effective (i.e.
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* actual transfer rate is better), then the driver continues to use the
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* speculative mode as the new current active mode.
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*
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* Each history set contains, separately for each possible rate, data for a
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* sliding window of the 62 most recent tx attempts at that rate. The data
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@ -2200,12 +2204,12 @@ struct iwl_link_qual_agg_params {
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* The driver uses the bit map to remove successes from the success sum, as
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* the oldest tx attempts fall out of the window.
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*
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* When the 4965 makes multiple tx attempts for a given frame, each attempt
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* might be at a different rate, and have different modulation characteristics
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* (e.g. antenna, fat channel, short guard interval), as set up in the rate
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* scaling table in the Link Quality command. The driver must determine
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* which rate table entry was used for each tx attempt, to determine which
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* rate-specific history to update, and record only those attempts that
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* When the agn device makes multiple tx attempts for a given frame, each
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* attempt might be at a different rate, and have different modulation
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* characteristics (e.g. antenna, fat channel, short guard interval), as set
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* up in the rate scaling table in the Link Quality command. The driver must
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* determine which rate table entry was used for each tx attempt, to determine
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* which rate-specific history to update, and record only those attempts that
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* match the modulation characteristics of the history set.
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*
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* When using block-ack (aggregation), all frames are transmitted at the same
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@ -2335,7 +2339,7 @@ struct iwl_link_quality_cmd {
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/*
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* Rate info; when using rate-scaling, Tx command's initial_rate_index
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* specifies 1st Tx rate attempted, via index into this table.
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* 4965 works its way through table when retrying Tx.
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* agn devices works its way through table when retrying Tx.
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*/
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struct {
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__le32 rate_n_flags; /* RATE_MCS_*, IWL_RATE_* */
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@ -2371,7 +2375,7 @@ struct iwl_link_quality_cmd {
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/*
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* REPLY_BT_CONFIG = 0x9b (command, has simple generic response)
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*
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* 3945 and 4965 support hardware handshake with Bluetooth device on
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* 3945 and agn devices support hardware handshake with Bluetooth device on
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* same platform. Bluetooth device alerts wireless device when it will Tx;
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* wireless device can delay or kill its own Tx to accommodate.
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*/
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@ -2572,7 +2576,7 @@ struct iwl_powertable_cmd {
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/*
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* PM_SLEEP_NOTIFICATION = 0x7A (notification only, not a command)
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* 3945 and 4965 identical.
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* all devices identical.
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*/
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struct iwl_sleep_notification {
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u8 pm_sleep_mode;
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@ -2583,7 +2587,7 @@ struct iwl_sleep_notification {
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__le32 bcon_timer;
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} __packed;
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/* Sleep states. 3945 and 4965 identical. */
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/* Sleep states. all devices identical. */
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enum {
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IWL_PM_NO_SLEEP = 0,
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IWL_PM_SLP_MAC = 1,
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@ -3270,7 +3274,7 @@ struct statistics_general_bt {
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/*
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* REPLY_STATISTICS_CMD = 0x9c,
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* 3945 and 4965 identical.
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* all devices identical.
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*
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* This command triggers an immediate response containing uCode statistics.
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* The response is in the same format as STATISTICS_NOTIFICATION 0x9d, below.
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@ -3608,7 +3612,7 @@ struct iwl_enhance_sensitivity_cmd {
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/**
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* REPLY_PHY_CALIBRATION_CMD = 0xb0 (command, has simple generic response)
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*
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* This command sets the relative gains of 4965's 3 radio receiver chains.
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* This command sets the relative gains of agn device's 3 radio receiver chains.
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*
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* After the first association, driver should accumulate signal and noise
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* statistics from the STATISTICS_NOTIFICATIONs that follow the first 20
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