diff options
Diffstat (limited to 'drivers/net/wireless/iwlwifi/iwl-3945-commands.h')
| -rw-r--r-- | drivers/net/wireless/iwlwifi/iwl-3945-commands.h | 97 |
1 files changed, 80 insertions, 17 deletions
diff --git a/drivers/net/wireless/iwlwifi/iwl-3945-commands.h b/drivers/net/wireless/iwlwifi/iwl-3945-commands.h index 4a8fc68..4885971 100644 --- a/drivers/net/wireless/iwlwifi/iwl-3945-commands.h +++ b/drivers/net/wireless/iwlwifi/iwl-3945-commands.h @@ -445,6 +445,23 @@ struct iwl3945_csa_notification { * Quality-of-Service (QOS) Commands & Responses: * *****************************************************************************/ + +/** + * struct iwl_ac_qos -- QOS timing params for REPLY_QOS_PARAM + * One for each of 4 EDCA access categories in struct iwl_qosparam_cmd + * + * @cw_min: Contention window, start value in numbers of slots. + * Should be a power-of-2, minus 1. Device's default is 0x0f. + * @cw_max: Contention window, max value in numbers of slots. + * Should be a power-of-2, minus 1. Device's default is 0x3f. + * @aifsn: Number of slots in Arbitration Interframe Space (before + * performing random backoff timing prior to Tx). Device default 1. + * @edca_txop: Length of Tx opportunity, in uSecs. Device default is 0. + * + * Device will automatically increase contention window by (2*CW) + 1 for each + * transmission retry. Device uses cw_max as a bit mask, ANDed with new CW + * value, to cap the CW value. + */ struct iwl3945_ac_qos { __le16 cw_min; __le16 cw_max; @@ -458,14 +475,14 @@ struct iwl3945_ac_qos { #define QOS_PARAM_FLG_TGN_MSK __constant_cpu_to_le32(0x02) #define QOS_PARAM_FLG_TXOP_TYPE_MSK __constant_cpu_to_le32(0x10) -/* - * TXFIFO Queue number defines - */ -/* number of Access categories (AC) (EDCA), queues 0..3 */ +/* Number of Access Categories (AC) (EDCA), queues 0..3 */ #define AC_NUM 4 /* * REPLY_QOS_PARAM = 0x13 (command, has simple generic response) + * + * This command sets up timings for each of the 4 prioritized EDCA Tx FIFOs + * 0: Background, 1: Best Effort, 2: Video, 3: Voice. */ struct iwl3945_qosparam_cmd { __le32 qos_flags; @@ -480,22 +497,21 @@ struct iwl3945_qosparam_cmd { /* * Multi station support */ + +/* Special, dedicated locations within device's station table */ #define IWL_AP_ID 0 #define IWL_MULTICAST_ID 1 #define IWL_STA_ID 2 - #define IWL3945_BROADCAST_ID 24 #define IWL3945_STATION_COUNT 25 -#define IWL4965_BROADCAST_ID 31 -#define IWL4965_STATION_COUNT 32 - #define IWL_STATION_COUNT 32 /* MAX(3945,4965)*/ #define IWL_INVALID_STATION 255 #define STA_FLG_TX_RATE_MSK __constant_cpu_to_le32(1<<2); #define STA_FLG_PWR_SAVE_MSK __constant_cpu_to_le32(1<<8); +/* Use in mode field. 1: modify existing entry, 0: add new station entry */ #define STA_CONTROL_MODIFY_MSK 0x01 /* key flags __le16*/ @@ -508,13 +524,10 @@ struct iwl3945_qosparam_cmd { #define STA_KEY_FLG_KEYID_POS 8 #define STA_KEY_FLG_INVALID __constant_cpu_to_le16(0x0800) -/* modify flags */ +/* Flags indicate whether to modify vs. don't change various station params */ #define STA_MODIFY_KEY_MASK 0x01 #define STA_MODIFY_TID_DISABLE_TX 0x02 #define STA_MODIFY_TX_RATE_MSK 0x04 -#define STA_MODIFY_ADDBA_TID_MSK 0x08 -#define STA_MODIFY_DELBA_TID_MSK 0x10 -#define BUILD_RAxTID(sta_id, tid) (((sta_id) << 4) + (tid)) /* * Antenna masks: @@ -537,6 +550,18 @@ struct iwl3945_keyinfo { u8 key[16]; /* 16-byte unicast decryption key */ } __attribute__ ((packed)); +/** + * struct sta_id_modify + * @addr[ETH_ALEN]: station's MAC address + * @sta_id: index of station in uCode's station table + * @modify_mask: STA_MODIFY_*, 1: modify, 0: don't change + * + * Driver selects unused table index when adding new station, + * or the index to a pre-existing station entry when modifying that station. + * Some indexes have special purposes (IWL_AP_ID, index 0, is for AP). + * + * modify_mask flags select which parameters to modify vs. leave alone. + */ struct sta_id_modify { u8 addr[ETH_ALEN]; __le16 reserved1; @@ -547,29 +572,67 @@ struct sta_id_modify { /* * REPLY_ADD_STA = 0x18 (command) + * + * The device contains an internal table of per-station information, + * with info on security keys, aggregation parameters, and Tx rates for + * initial Tx attempt and any retries (4965 uses REPLY_TX_LINK_QUALITY_CMD, + * 3945 uses REPLY_RATE_SCALE to set up rate tables). + * + * REPLY_ADD_STA sets up the table entry for one station, either creating + * a new entry, or modifying a pre-existing one. + * + * NOTE: RXON command (without "associated" bit set) wipes the station table + * clean. Moving into RF_KILL state does this also. Driver must set up + * new station table before transmitting anything on the RXON channel + * (except active scans or active measurements; those commands carry + * their own txpower/rate setup data). + * + * When getting started on a new channel, driver must set up the + * IWL_BROADCAST_ID entry (last entry in the table). For a client + * station in a BSS, once an AP is selected, driver sets up the AP STA + * in the IWL_AP_ID entry (1st entry in the table). BROADCAST and AP + * are all that are needed for a BSS client station. If the device is + * used as AP, or in an IBSS network, driver must set up station table + * entries for all STAs in network, starting with index IWL_STA_ID. */ struct iwl3945_addsta_cmd { - u8 mode; + u8 mode; /* 1: modify existing, 0: add new station */ u8 reserved[3]; struct sta_id_modify sta; struct iwl3945_keyinfo key; - __le32 station_flags; - __le32 station_flags_msk; + __le32 station_flags; /* STA_FLG_* */ + __le32 station_flags_msk; /* STA_FLG_* */ + + /* bit field to disable (1) or enable (0) Tx for Traffic ID (TID) + * corresponding to bit (e.g. bit 5 controls TID 5). + * Set modify_mask bit STA_MODIFY_TID_DISABLE_TX to use this field. */ __le16 tid_disable_tx; + __le16 rate_n_flags; + + /* TID for which to add block-ack support. + * Set modify_mask bit STA_MODIFY_ADDBA_TID_MSK to use this field. */ u8 add_immediate_ba_tid; + + /* TID for which to remove block-ack support. + * Set modify_mask bit STA_MODIFY_DELBA_TID_MSK to use this field. */ u8 remove_immediate_ba_tid; + + /* Starting Sequence Number for added block-ack support. + * Set modify_mask bit STA_MODIFY_ADDBA_TID_MSK to use this field. */ __le16 add_immediate_ba_ssn; } __attribute__ ((packed)); +#define ADD_STA_SUCCESS_MSK 0x1 +#define ADD_STA_NO_ROOM_IN_TABLE 0x2 +#define ADD_STA_NO_BLOCK_ACK_RESOURCE 0x4 /* * REPLY_ADD_STA = 0x18 (response) */ struct iwl3945_add_sta_resp { - u8 status; + u8 status; /* ADD_STA_* */ } __attribute__ ((packed)); -#define ADD_STA_SUCCESS_MSK 0x1 /****************************************************************************** * (4) |