| /* |
| * Copyright (c) 2004 Sam Leffler, Errno Consulting |
| * Copyright (c) 2004 Video54 Technologies, Inc. |
| * Copyright (c) 2008-2011 Atheros Communications Inc. |
| * |
| * Permission to use, copy, modify, and/or distribute this software for any |
| * purpose with or without fee is hereby granted, provided that the above |
| * copyright notice and this permission notice appear in all copies. |
| * |
| * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES |
| * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF |
| * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR |
| * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES |
| * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN |
| * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF |
| * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. |
| */ |
| |
| #ifndef RC_H |
| #define RC_H |
| |
| #include "hw.h" |
| |
| struct ath_softc; |
| |
| #define ATH_RATE_MAX 30 |
| #define RATE_TABLE_SIZE 72 |
| #define MAX_TX_RATE_PHY 48 |
| |
| |
| #define RC_INVALID 0x0000 |
| #define RC_LEGACY 0x0001 |
| #define RC_SS 0x0002 |
| #define RC_DS 0x0004 |
| #define RC_TS 0x0008 |
| #define RC_HT_20 0x0010 |
| #define RC_HT_40 0x0020 |
| |
| #define RC_STREAM_MASK 0xe |
| #define RC_DS_OR_LATER(f) ((((f) & RC_STREAM_MASK) == RC_DS) || \ |
| (((f) & RC_STREAM_MASK) == (RC_DS | RC_TS))) |
| #define RC_TS_ONLY(f) (((f) & RC_STREAM_MASK) == RC_TS) |
| #define RC_SS_OR_LEGACY(f) ((f) & (RC_SS | RC_LEGACY)) |
| |
| #define RC_HT_2040 (RC_HT_20 | RC_HT_40) |
| #define RC_ALL_STREAM (RC_SS | RC_DS | RC_TS) |
| #define RC_L_SD (RC_LEGACY | RC_SS | RC_DS) |
| #define RC_L_SDT (RC_LEGACY | RC_SS | RC_DS | RC_TS) |
| #define RC_HT_S_20 (RC_HT_20 | RC_SS) |
| #define RC_HT_D_20 (RC_HT_20 | RC_DS) |
| #define RC_HT_T_20 (RC_HT_20 | RC_TS) |
| #define RC_HT_S_40 (RC_HT_40 | RC_SS) |
| #define RC_HT_D_40 (RC_HT_40 | RC_DS) |
| #define RC_HT_T_40 (RC_HT_40 | RC_TS) |
| |
| #define RC_HT_SD_20 (RC_HT_20 | RC_SS | RC_DS) |
| #define RC_HT_DT_20 (RC_HT_20 | RC_DS | RC_TS) |
| #define RC_HT_SD_40 (RC_HT_40 | RC_SS | RC_DS) |
| #define RC_HT_DT_40 (RC_HT_40 | RC_DS | RC_TS) |
| |
| #define RC_HT_SD_2040 (RC_HT_2040 | RC_SS | RC_DS) |
| #define RC_HT_SDT_2040 (RC_HT_2040 | RC_SS | RC_DS | RC_TS) |
| |
| #define RC_HT_SDT_20 (RC_HT_20 | RC_SS | RC_DS | RC_TS) |
| #define RC_HT_SDT_40 (RC_HT_40 | RC_SS | RC_DS | RC_TS) |
| |
| #define RC_ALL (RC_LEGACY | RC_HT_2040 | RC_ALL_STREAM) |
| |
| enum { |
| WLAN_RC_PHY_OFDM, |
| WLAN_RC_PHY_CCK, |
| WLAN_RC_PHY_HT_20_SS, |
| WLAN_RC_PHY_HT_20_DS, |
| WLAN_RC_PHY_HT_20_TS, |
| WLAN_RC_PHY_HT_40_SS, |
| WLAN_RC_PHY_HT_40_DS, |
| WLAN_RC_PHY_HT_40_TS, |
| WLAN_RC_PHY_HT_20_SS_HGI, |
| WLAN_RC_PHY_HT_20_DS_HGI, |
| WLAN_RC_PHY_HT_20_TS_HGI, |
| WLAN_RC_PHY_HT_40_SS_HGI, |
| WLAN_RC_PHY_HT_40_DS_HGI, |
| WLAN_RC_PHY_HT_40_TS_HGI, |
| WLAN_RC_PHY_MAX |
| }; |
| |
| #define WLAN_RC_PHY_DS(_phy) ((_phy == WLAN_RC_PHY_HT_20_DS) \ |
| || (_phy == WLAN_RC_PHY_HT_40_DS) \ |
| || (_phy == WLAN_RC_PHY_HT_20_DS_HGI) \ |
| || (_phy == WLAN_RC_PHY_HT_40_DS_HGI)) |
| #define WLAN_RC_PHY_TS(_phy) ((_phy == WLAN_RC_PHY_HT_20_TS) \ |
| || (_phy == WLAN_RC_PHY_HT_40_TS) \ |
| || (_phy == WLAN_RC_PHY_HT_20_TS_HGI) \ |
| || (_phy == WLAN_RC_PHY_HT_40_TS_HGI)) |
| #define WLAN_RC_PHY_20(_phy) ((_phy == WLAN_RC_PHY_HT_20_SS) \ |
| || (_phy == WLAN_RC_PHY_HT_20_DS) \ |
| || (_phy == WLAN_RC_PHY_HT_20_TS) \ |
| || (_phy == WLAN_RC_PHY_HT_20_SS_HGI) \ |
| || (_phy == WLAN_RC_PHY_HT_20_DS_HGI) \ |
| || (_phy == WLAN_RC_PHY_HT_20_TS_HGI)) |
| #define WLAN_RC_PHY_40(_phy) ((_phy == WLAN_RC_PHY_HT_40_SS) \ |
| || (_phy == WLAN_RC_PHY_HT_40_DS) \ |
| || (_phy == WLAN_RC_PHY_HT_40_TS) \ |
| || (_phy == WLAN_RC_PHY_HT_40_SS_HGI) \ |
| || (_phy == WLAN_RC_PHY_HT_40_DS_HGI) \ |
| || (_phy == WLAN_RC_PHY_HT_40_TS_HGI)) |
| #define WLAN_RC_PHY_SGI(_phy) ((_phy == WLAN_RC_PHY_HT_20_SS_HGI) \ |
| || (_phy == WLAN_RC_PHY_HT_20_DS_HGI) \ |
| || (_phy == WLAN_RC_PHY_HT_20_TS_HGI) \ |
| || (_phy == WLAN_RC_PHY_HT_40_SS_HGI) \ |
| || (_phy == WLAN_RC_PHY_HT_40_DS_HGI) \ |
| || (_phy == WLAN_RC_PHY_HT_40_TS_HGI)) |
| |
| #define WLAN_RC_PHY_HT(_phy) (_phy >= WLAN_RC_PHY_HT_20_SS) |
| |
| #define WLAN_RC_CAP_MODE(capflag) (((capflag & WLAN_RC_HT_FLAG) ? \ |
| ((capflag & WLAN_RC_40_FLAG) ? RC_HT_40 : RC_HT_20) : RC_LEGACY)) |
| |
| #define WLAN_RC_CAP_STREAM(capflag) (((capflag & WLAN_RC_TS_FLAG) ? \ |
| (RC_TS) : ((capflag & WLAN_RC_DS_FLAG) ? RC_DS : RC_SS))) |
| |
| /* Return TRUE if flag supports HT20 && client supports HT20 or |
| * return TRUE if flag supports HT40 && client supports HT40. |
| * This is used becos some rates overlap between HT20/HT40. |
| */ |
| #define WLAN_RC_PHY_HT_VALID(flag, capflag) \ |
| (((flag & RC_HT_20) && !(capflag & WLAN_RC_40_FLAG)) || \ |
| ((flag & RC_HT_40) && (capflag & WLAN_RC_40_FLAG))) |
| |
| #define WLAN_RC_DS_FLAG (0x01) |
| #define WLAN_RC_TS_FLAG (0x02) |
| #define WLAN_RC_40_FLAG (0x04) |
| #define WLAN_RC_SGI_FLAG (0x08) |
| #define WLAN_RC_HT_FLAG (0x10) |
| |
| /** |
| * struct ath_rate_table - Rate Control table |
| * @rate_cnt: total number of rates for the given wireless mode |
| * @mcs_start: MCS rate index offset |
| * @rate_flags: Rate Control flags |
| * @phy: CCK/OFDM/HT20/HT40 |
| * @ratekbps: rate in Kbits per second |
| * @user_ratekbps: user rate in Kbits per second |
| * @ratecode: rate that goes into HW descriptors |
| * @dot11rate: value that goes into supported |
| * rates info element of MLME |
| * @ctrl_rate: Index of next lower basic rate, used for duration computation |
| * @cw40index: Index of rates having 40MHz channel width |
| * @sgi_index: Index of rates having Short Guard Interval |
| * @ht_index: high throughput rates having 40MHz channel width and |
| * Short Guard Interval |
| * @probe_interval: interval for rate control to probe for other rates |
| * @initial_ratemax: initial ratemax value |
| */ |
| struct ath_rate_table { |
| int rate_cnt; |
| int mcs_start; |
| struct { |
| u16 rate_flags; |
| u8 phy; |
| u32 ratekbps; |
| u32 user_ratekbps; |
| u8 ratecode; |
| u8 dot11rate; |
| u8 ctrl_rate; |
| u8 cw40index; |
| u8 sgi_index; |
| u8 ht_index; |
| } info[RATE_TABLE_SIZE]; |
| u32 probe_interval; |
| u8 initial_ratemax; |
| }; |
| |
| struct ath_rateset { |
| u8 rs_nrates; |
| u8 rs_rates[ATH_RATE_MAX]; |
| }; |
| |
| struct ath_rc_stats { |
| u32 success; |
| u32 retries; |
| u32 xretries; |
| u8 per; |
| }; |
| |
| /** |
| * struct ath_rate_priv - Rate Control priv data |
| * @state: RC state |
| * @probe_rate: rate we are probing at |
| * @probe_time: msec timestamp for last probe |
| * @hw_maxretry_pktcnt: num of packets since we got HW max retry error |
| * @max_valid_rate: maximum number of valid rate |
| * @per_down_time: msec timestamp for last PER down step |
| * @valid_phy_ratecnt: valid rate count |
| * @rate_max_phy: phy index for the max rate |
| * @per: PER for every valid rate in % |
| * @probe_interval: interval for ratectrl to probe for other rates |
| * @ht_cap: HT capabilities |
| * @neg_rates: Negotatied rates |
| * @neg_ht_rates: Negotiated HT rates |
| */ |
| struct ath_rate_priv { |
| u8 rate_table_size; |
| u8 probe_rate; |
| u8 hw_maxretry_pktcnt; |
| u8 max_valid_rate; |
| u8 valid_rate_index[RATE_TABLE_SIZE]; |
| u8 ht_cap; |
| u8 valid_phy_ratecnt[WLAN_RC_PHY_MAX]; |
| u8 valid_phy_rateidx[WLAN_RC_PHY_MAX][RATE_TABLE_SIZE]; |
| u8 rate_max_phy; |
| u8 per[RATE_TABLE_SIZE]; |
| u32 probe_time; |
| u32 per_down_time; |
| u32 probe_interval; |
| struct ath_rateset neg_rates; |
| struct ath_rateset neg_ht_rates; |
| const struct ath_rate_table *rate_table; |
| |
| struct dentry *debugfs_rcstats; |
| struct ath_rc_stats rcstats[RATE_TABLE_SIZE]; |
| }; |
| |
| #ifdef CONFIG_ATH9K_RATE_CONTROL |
| int ath_rate_control_register(void); |
| void ath_rate_control_unregister(void); |
| #else |
| static inline int ath_rate_control_register(void) |
| { |
| return 0; |
| } |
| |
| static inline void ath_rate_control_unregister(void) |
| { |
| } |
| #endif |
| |
| #endif /* RC_H */ |
