1 /* $OpenBSD: if_urtwn.c,v 1.16 2011/02/10 17:26:40 jakemsr Exp $ */
4 * Copyright (c) 2010 Damien Bergamini <damien.bergamini@free.fr>
5 * Copyright (c) 2014 Kevin Lo <kevlo@FreeBSD.org>
6 * Copyright (c) 2015-2016 Andriy Voskoboinyk <avos@FreeBSD.org>
8 * Permission to use, copy, modify, and distribute this software for any
9 * purpose with or without fee is hereby granted, provided that the above
10 * copyright notice and this permission notice appear in all copies.
12 * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
13 * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
14 * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
15 * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
16 * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
17 * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
18 * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
21 #include <sys/cdefs.h>
22 __FBSDID("$FreeBSD$");
26 #include <sys/param.h>
28 #include <sys/mutex.h>
30 #include <sys/kernel.h>
31 #include <sys/socket.h>
32 #include <sys/systm.h>
33 #include <sys/malloc.h>
34 #include <sys/queue.h>
35 #include <sys/taskqueue.h>
37 #include <sys/endian.h>
38 #include <sys/linker.h>
41 #include <net/ethernet.h>
42 #include <net/if_media.h>
44 #include <net80211/ieee80211_var.h>
45 #include <net80211/ieee80211_radiotap.h>
47 #include <dev/rtwn/if_rtwnreg.h>
48 #include <dev/rtwn/if_rtwnvar.h>
50 #include <dev/rtwn/if_rtwn_debug.h>
51 #include <dev/rtwn/if_rtwn_ridx.h>
53 #include <dev/rtwn/rtl8192c/r92c_var.h>
55 #include <dev/rtwn/rtl8188e/r88e.h>
56 #include <dev/rtwn/rtl8188e/r88e_priv.h>
57 #include <dev/rtwn/rtl8188e/r88e_reg.h>
61 r88e_get_power_group(struct rtwn_softc *sc, struct ieee80211_channel *c)
66 chan = rtwn_chan2centieee(c);
67 if (IEEE80211_IS_CHAN_2GHZ(c)) {
68 if (chan <= 2) group = 0;
69 else if (chan <= 5) group = 1;
70 else if (chan <= 8) group = 2;
71 else if (chan <= 11) group = 3;
72 else if (chan <= 13) group = 4;
73 else if (chan <= 14) group = 5;
75 KASSERT(0, ("wrong 2GHz channel %d!\n", chan));
79 KASSERT(0, ("wrong channel band (flags %08X)\n", c->ic_flags));
87 r88e_get_txpower(struct rtwn_softc *sc, int chain,
88 struct ieee80211_channel *c, uint8_t power[RTWN_RIDX_COUNT])
90 struct r92c_softc *rs = sc->sc_priv;
91 const struct rtwn_r88e_txpwr *rt = rs->rs_txpwr;
92 uint8_t cckpow, ofdmpow, bw20pow, htpow = 0;
93 int max_mcs, ridx, group;
95 /* Determine channel group. */
96 group = r88e_get_power_group(sc, c);
97 if (group == -1) { /* shouldn't happen */
98 device_printf(sc->sc_dev, "%s: incorrect channel\n", __func__);
102 /* XXX net80211 regulatory */
104 max_mcs = RTWN_RIDX_HT_MCS(sc->ntxchains * 8 - 1);
105 KASSERT(max_mcs <= RTWN_RIDX_COUNT, ("increase ridx limit\n"));
107 /* Compute per-CCK rate Tx power. */
108 cckpow = rt->cck_tx_pwr[group];
109 for (ridx = RTWN_RIDX_CCK1; ridx <= RTWN_RIDX_CCK11; ridx++) {
110 power[ridx] = (ridx == RTWN_RIDX_CCK2) ? cckpow - 9 : cckpow;
114 htpow = rt->ht40_tx_pwr[group];
116 /* Compute per-OFDM rate Tx power. */
117 ofdmpow = htpow + rt->ofdm_tx_pwr_diff;
118 for (ridx = RTWN_RIDX_OFDM6; ridx <= RTWN_RIDX_OFDM54; ridx++)
119 power[ridx] = ofdmpow;
121 bw20pow = htpow + rt->bw20_tx_pwr_diff;
122 for (ridx = RTWN_RIDX_HT_MCS(0); ridx <= max_mcs; ridx++)
123 power[ridx] = bw20pow;
125 /* Apply max limit. */
126 for (ridx = RTWN_RIDX_CCK1; ridx <= max_mcs; ridx++) {
127 if (power[ridx] > R92C_MAX_TX_PWR)
128 power[ridx] = R92C_MAX_TX_PWR;
133 r88e_set_bw20(struct rtwn_softc *sc, uint8_t chan)
135 struct r92c_softc *rs = sc->sc_priv;
137 rtwn_setbits_1(sc, R92C_BWOPMODE, 0, R92C_BWOPMODE_20MHZ);
139 rtwn_bb_setbits(sc, R92C_FPGA0_RFMOD, R92C_RFMOD_40MHZ, 0);
140 rtwn_bb_setbits(sc, R92C_FPGA1_RFMOD, R92C_RFMOD_40MHZ, 0);
142 /* Select 20MHz bandwidth. */
143 rtwn_rf_write(sc, 0, R92C_RF_CHNLBW,
144 (rs->rf_chnlbw[0] & ~0xfff) | chan | R88E_RF_CHNLBW_BW20);
148 r88e_set_gain(struct rtwn_softc *sc, uint8_t gain)
151 rtwn_bb_setbits(sc, R92C_OFDM0_AGCCORE1(0),
152 R92C_OFDM0_AGCCORE1_GAIN_M, gain);