From 1f3b0ff8eccefb0a22398bb044fa12f7e3f6f058 Mon Sep 17 00:00:00 2001 From: Lilach Edelstein Date: Sun, 6 Oct 2013 13:03:32 +0200 Subject: iwlwifi: mvm: Add Smart FIFO support Send firmware a Smart FIFO Configuration host command to allow interrupt coalescing. The smart FIFO is enabled when there is only one bound interface (other than p2p devices which are ignored) and it is of type station, and activated while the station is associated. Smart Fifo allows aggragations of DMA transactions and by that causes processor and memory controller to stay for a longer time on lower c-states, thus saving platform power. Firmware relies on driver to activate and disable it. Signed-off-by: Lilach Edelstein Signed-off-by: Emmanuel Grumbach --- drivers/net/wireless/iwlwifi/mvm/fw-api.h | 62 +++++++++++++++++++++++++++++++ 1 file changed, 62 insertions(+) (limited to 'drivers/net/wireless/iwlwifi/mvm/fw-api.h') diff --git a/drivers/net/wireless/iwlwifi/mvm/fw-api.h b/drivers/net/wireless/iwlwifi/mvm/fw-api.h index bad5a552dd8d..3af413386ad9 100644 --- a/drivers/net/wireless/iwlwifi/mvm/fw-api.h +++ b/drivers/net/wireless/iwlwifi/mvm/fw-api.h @@ -183,6 +183,7 @@ enum { BT_PROFILE_NOTIFICATION = 0xce, BT_COEX_CI = 0x5d, + REPLY_SF_CFG_CMD = 0xd1, REPLY_BEACON_FILTERING_CMD = 0xd2, REPLY_DEBUG_CMD = 0xf0, @@ -1363,4 +1364,65 @@ struct iwl_notif_statistics { /* STATISTICS_NTFY_API_S_VER_8 */ struct mvm_statistics_general general; } __packed; +/*********************************** + * Smart Fifo API + ***********************************/ +/* Smart Fifo state */ +enum iwl_sf_state { + SF_LONG_DELAY_ON = 0, /* should never be called by driver */ + SF_FULL_ON, + SF_UNINIT, + SF_INIT_OFF, + SF_HW_NUM_STATES +}; + +/* Smart Fifo possible scenario */ +enum iwl_sf_scenario { + SF_SCENARIO_SINGLE_UNICAST, + SF_SCENARIO_AGG_UNICAST, + SF_SCENARIO_MULTICAST, + SF_SCENARIO_BA_RESP, + SF_SCENARIO_TX_RESP, + SF_NUM_SCENARIO +}; + +#define SF_TRANSIENT_STATES_NUMBER 2 /* SF_LONG_DELAY_ON and SF_FULL_ON */ +#define SF_NUM_TIMEOUT_TYPES 2 /* Aging timer and Idle timer */ + +/* smart FIFO default values */ +#define SF_W_MARK_SISO 4096 +#define SF_W_MARK_MIMO2 8192 +#define SF_W_MARK_MIMO3 6144 +#define SF_W_MARK_LEGACY 4096 +#define SF_W_MARK_SCAN 4096 + +/* SF Scenarios timers for FULL_ON state (aligned to 32 uSec) */ +#define SF_SINGLE_UNICAST_IDLE_TIMER 320 /* 300 uSec */ +#define SF_SINGLE_UNICAST_AGING_TIMER 2016 /* 2 mSec */ +#define SF_AGG_UNICAST_IDLE_TIMER 320 /* 300 uSec */ +#define SF_AGG_UNICAST_AGING_TIMER 2016 /* 2 mSec */ +#define SF_MCAST_IDLE_TIMER 2016 /* 2 mSec */ +#define SF_MCAST_AGING_TIMER 10016 /* 10 mSec */ +#define SF_BA_IDLE_TIMER 320 /* 300 uSec */ +#define SF_BA_AGING_TIMER 2016 /* 2 mSec */ +#define SF_TX_RE_IDLE_TIMER 320 /* 300 uSec */ +#define SF_TX_RE_AGING_TIMER 2016 /* 2 mSec */ + +#define SF_LONG_DELAY_AGING_TIMER 1000000 /* 1 Sec */ + +/** + * Smart Fifo configuration command. + * @state: smart fifo state, types listed in iwl_sf_sate. + * @watermark: Minimum allowed availabe free space in RXF for transient state. + * @long_delay_timeouts: aging and idle timer values for each scenario + * in long delay state. + * @full_on_timeouts: timer values for each scenario in full on state. + */ +struct iwl_sf_cfg_cmd { + enum iwl_sf_state state; + __le32 watermark[SF_TRANSIENT_STATES_NUMBER]; + __le32 long_delay_timeouts[SF_NUM_SCENARIO][SF_NUM_TIMEOUT_TYPES]; + __le32 full_on_timeouts[SF_NUM_SCENARIO][SF_NUM_TIMEOUT_TYPES]; +} __packed; /* SF_CFG_API_S_VER_2 */ + #endif /* __fw_api_h__ */ -- cgit v1.2.3