1 /*- 2 * Copyright (c) 2002-2009 Sam Leffler, Errno Consulting 3 * All rights reserved. 4 * 5 * Redistribution and use in source and binary forms, with or without 6 * modification, are permitted provided that the following conditions 7 * are met: 8 * 1. Redistributions of source code must retain the above copyright 9 * notice, this list of conditions and the following disclaimer, 10 * without modification. 11 * 2. Redistributions in binary form must reproduce at minimum a disclaimer 12 * similar to the "NO WARRANTY" disclaimer below ("Disclaimer") and any 13 * redistribution must be conditioned upon including a substantially 14 * similar Disclaimer requirement for further binary redistribution. 15 * 16 * NO WARRANTY 17 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 18 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 19 * LIMITED TO, THE IMPLIED WARRANTIES OF NONINFRINGEMENT, MERCHANTIBILITY 20 * AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL 21 * THE COPYRIGHT HOLDERS OR CONTRIBUTORS BE LIABLE FOR SPECIAL, EXEMPLARY, 22 * OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 23 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 24 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER 25 * IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 26 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF 27 * THE POSSIBILITY OF SUCH DAMAGES. 28 * 29 * $FreeBSD$ 30 */ 31 #ifndef __IF_ATH_TX_H__ 32 #define __IF_ATH_TX_H__ 33 34 /* 35 * some general macros 36 */ 37 #define INCR(_l, _sz) (_l) ++; (_l) &= ((_sz) - 1) 38 /* 39 * return block-ack bitmap index given sequence and starting sequence 40 */ 41 #define ATH_BA_INDEX(_st, _seq) (((_seq) - (_st)) & (IEEE80211_SEQ_RANGE - 1)) 42 43 #define WME_BA_BMP_SIZE 64 44 #define WME_MAX_BA WME_BA_BMP_SIZE 45 46 /* 47 * How 'busy' to try and keep the hardware txq 48 */ 49 #define ATH_AGGR_MIN_QDEPTH 2 50 #define ATH_NONAGGR_MIN_QDEPTH 32 51 52 /* 53 * Watermark for scheduling TIDs in order to maximise aggregation. 54 * 55 * If hwq_depth is greater than this, don't schedule the TID 56 * for packet scheduling - the hardware is already busy servicing 57 * this TID. 58 * 59 * If hwq_depth is less than this, schedule the TID for packet 60 * scheduling in the completion handler. 61 */ 62 #define ATH_AGGR_SCHED_HIGH 4 63 #define ATH_AGGR_SCHED_LOW 2 64 65 /* 66 * return whether a bit at index _n in bitmap _bm is set 67 * _sz is the size of the bitmap 68 */ 69 #define ATH_BA_ISSET(_bm, _n) (((_n) < (WME_BA_BMP_SIZE)) && \ 70 ((_bm)[(_n) >> 5] & (1 << ((_n) & 31)))) 71 72 73 /* extracting the seqno from buffer seqno */ 74 #define SEQNO(_a) ((_a) >> IEEE80211_SEQ_SEQ_SHIFT) 75 76 /* 77 * Whether the current sequence number is within the 78 * BAW. 79 */ 80 #define BAW_WITHIN(_start, _bawsz, _seqno) \ 81 ((((_seqno) - (_start)) & 4095) < (_bawsz)) 82 83 /* 84 * Maximum aggregate size 85 */ 86 #define ATH_AGGR_MAXSIZE 65530 87 88 extern void ath_freetx(struct mbuf *m); 89 extern void ath_tx_node_flush(struct ath_softc *sc, struct ath_node *an); 90 extern void ath_tx_txq_drain(struct ath_softc *sc, struct ath_txq *txq); 91 extern void ath_txfrag_cleanup(struct ath_softc *sc, ath_bufhead *frags, 92 struct ieee80211_node *ni); 93 extern int ath_txfrag_setup(struct ath_softc *sc, ath_bufhead *frags, 94 struct mbuf *m0, struct ieee80211_node *ni); 95 extern int ath_tx_start(struct ath_softc *sc, struct ieee80211_node *ni, 96 struct ath_buf *bf, struct mbuf *m0); 97 extern int ath_raw_xmit(struct ieee80211_node *ni, struct mbuf *m, 98 const struct ieee80211_bpf_params *params); 99 100 /* software queue stuff */ 101 extern void ath_tx_swq(struct ath_softc *sc, struct ieee80211_node *ni, 102 struct ath_txq *txq, int queue_to_head, struct ath_buf *bf); 103 extern void ath_tx_tid_init(struct ath_softc *sc, struct ath_node *an); 104 extern void ath_tx_tid_hw_queue_aggr(struct ath_softc *sc, struct ath_node *an, 105 struct ath_tid *tid); 106 extern void ath_tx_tid_hw_queue_norm(struct ath_softc *sc, struct ath_node *an, 107 struct ath_tid *tid); 108 extern void ath_txq_sched(struct ath_softc *sc, struct ath_txq *txq); 109 extern void ath_tx_normal_comp(struct ath_softc *sc, struct ath_buf *bf, 110 int fail); 111 extern void ath_tx_aggr_comp(struct ath_softc *sc, struct ath_buf *bf, 112 int fail); 113 extern void ath_tx_addto_baw(struct ath_softc *sc, struct ath_node *an, 114 struct ath_tid *tid, struct ath_buf *bf); 115 extern struct ieee80211_tx_ampdu * ath_tx_get_tx_tid(struct ath_node *an, 116 int tid); 117 extern void ath_tx_tid_sched(struct ath_softc *sc, struct ath_tid *tid); 118 119 /* TX addba handling */ 120 extern int ath_addba_request(struct ieee80211_node *ni, 121 struct ieee80211_tx_ampdu *tap, int dialogtoken, 122 int baparamset, int batimeout); 123 extern int ath_addba_response(struct ieee80211_node *ni, 124 struct ieee80211_tx_ampdu *tap, int dialogtoken, 125 int code, int batimeout); 126 extern void ath_addba_stop(struct ieee80211_node *ni, 127 struct ieee80211_tx_ampdu *tap); 128 extern void ath_bar_response(struct ieee80211_node *ni, 129 struct ieee80211_tx_ampdu *tap, int status); 130 extern void ath_addba_response_timeout(struct ieee80211_node *ni, 131 struct ieee80211_tx_ampdu *tap); 132 133 /* 134 * AP mode power save handling (of stations) 135 */ 136 extern void ath_tx_node_sleep(struct ath_softc *sc, struct ath_node *an); 137 extern void ath_tx_node_wakeup(struct ath_softc *sc, struct ath_node *an); 138 extern int ath_tx_node_is_asleep(struct ath_softc *sc, struct ath_node *an); 139 extern void ath_tx_node_reassoc(struct ath_softc *sc, struct ath_node *an); 140 141 /* 142 * Hardware queue stuff 143 */ 144 extern void ath_tx_push_pending(struct ath_softc *sc, struct ath_txq *txq); 145 146 /* 147 * Misc debugging stuff 148 */ 149 #ifdef ATH_DEBUG_ALQ 150 extern void ath_tx_alq_post(struct ath_softc *sc, struct ath_buf *bf_first); 151 #endif /* ATH_DEBUG_ALQ */ 152 153 /* 154 * Setup path 155 */ 156 #define ath_txdma_setup(_sc) \ 157 (_sc)->sc_tx.xmit_setup(_sc) 158 #define ath_txdma_teardown(_sc) \ 159 (_sc)->sc_tx.xmit_teardown(_sc) 160 #define ath_txq_restart_dma(_sc, _txq) \ 161 (_sc)->sc_tx.xmit_dma_restart((_sc), (_txq)) 162 #define ath_tx_handoff(_sc, _txq, _bf) \ 163 (_sc)->sc_tx.xmit_handoff((_sc), (_txq), (_bf)) 164 #define ath_draintxq(_sc, _rtype) \ 165 (_sc)->sc_tx.xmit_drain((_sc), (_rtype)) 166 167 extern void ath_xmit_setup_legacy(struct ath_softc *sc); 168 169 #endif 170