1235679Sadrian/*- 2235679Sadrian * Copyright (c) 2002-2009 Sam Leffler, Errno Consulting 3235679Sadrian * All rights reserved. 4235679Sadrian * 5235679Sadrian * Redistribution and use in source and binary forms, with or without 6235679Sadrian * modification, are permitted provided that the following conditions 7235679Sadrian * are met: 8235679Sadrian * 1. Redistributions of source code must retain the above copyright 9235679Sadrian * notice, this list of conditions and the following disclaimer, 10235679Sadrian * without modification. 11235679Sadrian * 2. Redistributions in binary form must reproduce at minimum a disclaimer 12235679Sadrian * similar to the "NO WARRANTY" disclaimer below ("Disclaimer") and any 13235679Sadrian * redistribution must be conditioned upon including a substantially 14235679Sadrian * similar Disclaimer requirement for further binary redistribution. 15235679Sadrian * 16235679Sadrian * NO WARRANTY 17235679Sadrian * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 18235679Sadrian * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 19235679Sadrian * LIMITED TO, THE IMPLIED WARRANTIES OF NONINFRINGEMENT, MERCHANTIBILITY 20235679Sadrian * AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL 21235679Sadrian * THE COPYRIGHT HOLDERS OR CONTRIBUTORS BE LIABLE FOR SPECIAL, EXEMPLARY, 22235679Sadrian * OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 23235679Sadrian * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 24235679Sadrian * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER 25235679Sadrian * IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 26235679Sadrian * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF 27235679Sadrian * THE POSSIBILITY OF SUCH DAMAGES. 28235679Sadrian * 29235679Sadrian * $FreeBSD$ 30235679Sadrian */ 31235679Sadrian#ifndef __IF_ATH_TDMA_H__ 32235679Sadrian#define __IF_ATH_TDMA_H__ 33235679Sadrian 34235679Sadrian#define TDMA_EP_MULTIPLIER (1<<10) /* pow2 to optimize out * and / */ 35235679Sadrian#define TDMA_LPF_LEN 6 36235679Sadrian#define TDMA_DUMMY_MARKER 0x127 37235679Sadrian#define TDMA_EP_MUL(x, mul) ((x) * (mul)) 38235679Sadrian#define TDMA_IN(x) (TDMA_EP_MUL((x), TDMA_EP_MULTIPLIER)) 39235679Sadrian#define TDMA_LPF(x, y, len) \ 40235679Sadrian ((x != TDMA_DUMMY_MARKER) ? (((x) * ((len)-1) + (y)) / (len)) : (y)) 41235679Sadrian#define TDMA_SAMPLE(x, y) do { \ 42235679Sadrian x = TDMA_LPF((x), TDMA_IN(y), TDMA_LPF_LEN); \ 43235679Sadrian} while (0) 44235679Sadrian#define TDMA_EP_RND(x,mul) \ 45235679Sadrian ((((x)%(mul)) >= ((mul)/2)) ? \ 46235679Sadrian ((x) + ((mul) - 1)) / (mul) : (x)/(mul)) 47235679Sadrian#define TDMA_AVG(x) TDMA_EP_RND(x, TDMA_EP_MULTIPLIER) 48235679Sadrian 49235679Sadrianextern void ath_tdma_config(struct ath_softc *sc, struct ieee80211vap *vap); 50235679Sadrianextern void ath_tdma_update(struct ieee80211_node *ni, 51235679Sadrian const struct ieee80211_tdma_param *tdma, int changed); 52235679Sadrianextern void ath_tdma_beacon_send(struct ath_softc *sc, 53235679Sadrian struct ieee80211vap *vap); 54235679Sadrian 55235679Sadrian#endif 56