153 lines
4.2 KiB
C
153 lines
4.2 KiB
C
/* $OpenBSD: if_urtwn.c,v 1.16 2011/02/10 17:26:40 jakemsr Exp $ */
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/*-
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* Copyright (c) 2010 Damien Bergamini <damien.bergamini@free.fr>
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* Copyright (c) 2014 Kevin Lo <kevlo@FreeBSD.org>
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* Copyright (c) 2015-2016 Andriy Voskoboinyk <avos@FreeBSD.org>
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*
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* Permission to use, copy, modify, and distribute this software for any
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* purpose with or without fee is hereby granted, provided that the above
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* copyright notice and this permission notice appear in all copies.
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*
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* THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
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* WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
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* MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
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* ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
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* WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
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* ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
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* OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
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*/
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#include <sys/cdefs.h>
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__FBSDID("$FreeBSD$");
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#include "opt_wlan.h"
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#include <sys/param.h>
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#include <sys/lock.h>
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#include <sys/mutex.h>
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#include <sys/mbuf.h>
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#include <sys/kernel.h>
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#include <sys/socket.h>
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#include <sys/systm.h>
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#include <sys/malloc.h>
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#include <sys/queue.h>
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#include <sys/taskqueue.h>
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#include <sys/bus.h>
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#include <sys/endian.h>
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#include <sys/linker.h>
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#include <net/if.h>
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#include <net/ethernet.h>
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#include <net/if_media.h>
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#include <net80211/ieee80211_var.h>
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#include <net80211/ieee80211_radiotap.h>
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#include <dev/rtwn/if_rtwnreg.h>
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#include <dev/rtwn/if_rtwnvar.h>
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#include <dev/rtwn/if_rtwn_debug.h>
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#include <dev/rtwn/if_rtwn_ridx.h>
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#include <dev/rtwn/rtl8192c/r92c_var.h>
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#include <dev/rtwn/rtl8188e/r88e.h>
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#include <dev/rtwn/rtl8188e/r88e_priv.h>
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#include <dev/rtwn/rtl8188e/r88e_reg.h>
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static int
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r88e_get_power_group(struct rtwn_softc *sc, struct ieee80211_channel *c)
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{
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uint8_t chan;
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int group;
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chan = rtwn_chan2centieee(c);
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if (IEEE80211_IS_CHAN_2GHZ(c)) {
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if (chan <= 2) group = 0;
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else if (chan <= 5) group = 1;
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else if (chan <= 8) group = 2;
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else if (chan <= 11) group = 3;
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else if (chan <= 13) group = 4;
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else if (chan <= 14) group = 5;
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else {
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KASSERT(0, ("wrong 2GHz channel %d!\n", chan));
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return (-1);
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}
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} else {
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KASSERT(0, ("wrong channel band (flags %08X)\n", c->ic_flags));
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return (-1);
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}
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return (group);
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}
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void
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r88e_get_txpower(struct rtwn_softc *sc, int chain,
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struct ieee80211_channel *c, uint8_t power[RTWN_RIDX_COUNT])
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{
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struct r92c_softc *rs = sc->sc_priv;
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const struct rtwn_r88e_txpwr *rt = rs->rs_txpwr;
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uint8_t cckpow, ofdmpow, bw20pow, htpow = 0;
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int max_mcs, ridx, group;
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/* Determine channel group. */
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group = r88e_get_power_group(sc, c);
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if (group == -1) { /* shouldn't happen */
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device_printf(sc->sc_dev, "%s: incorrect channel\n", __func__);
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return;
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}
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/* XXX net80211 regulatory */
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max_mcs = RTWN_RIDX_HT_MCS(sc->ntxchains * 8 - 1);
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KASSERT(max_mcs <= RTWN_RIDX_COUNT, ("increase ridx limit\n"));
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/* Compute per-CCK rate Tx power. */
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cckpow = rt->cck_tx_pwr[group];
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for (ridx = RTWN_RIDX_CCK1; ridx <= RTWN_RIDX_CCK11; ridx++) {
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power[ridx] = (ridx == RTWN_RIDX_CCK2) ? cckpow - 9 : cckpow;
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}
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if (group < 5)
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htpow = rt->ht40_tx_pwr[group];
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/* Compute per-OFDM rate Tx power. */
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ofdmpow = htpow + rt->ofdm_tx_pwr_diff;
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for (ridx = RTWN_RIDX_OFDM6; ridx <= RTWN_RIDX_OFDM54; ridx++)
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power[ridx] = ofdmpow;
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bw20pow = htpow + rt->bw20_tx_pwr_diff;
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for (ridx = RTWN_RIDX_HT_MCS(0); ridx <= max_mcs; ridx++)
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power[ridx] = bw20pow;
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/* Apply max limit. */
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for (ridx = RTWN_RIDX_CCK1; ridx <= max_mcs; ridx++) {
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if (power[ridx] > R92C_MAX_TX_PWR)
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power[ridx] = R92C_MAX_TX_PWR;
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}
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}
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void
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r88e_set_bw20(struct rtwn_softc *sc, uint8_t chan)
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{
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struct r92c_softc *rs = sc->sc_priv;
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rtwn_setbits_1(sc, R92C_BWOPMODE, 0, R92C_BWOPMODE_20MHZ);
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rtwn_bb_setbits(sc, R92C_FPGA0_RFMOD, R92C_RFMOD_40MHZ, 0);
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rtwn_bb_setbits(sc, R92C_FPGA1_RFMOD, R92C_RFMOD_40MHZ, 0);
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/* Select 20MHz bandwidth. */
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rtwn_rf_write(sc, 0, R92C_RF_CHNLBW,
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(rs->rf_chnlbw[0] & ~0xfff) | chan | R88E_RF_CHNLBW_BW20);
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}
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void
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r88e_set_gain(struct rtwn_softc *sc, uint8_t gain)
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{
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rtwn_bb_setbits(sc, R92C_OFDM0_AGCCORE1(0),
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R92C_OFDM0_AGCCORE1_GAIN_M, gain);
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}
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