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#include <machine/rtems-bsd-kernel-space.h>
/* $OpenBSD: if_urtwn.c,v 1.16 2011/02/10 17:26:40 jakemsr Exp $ */
/*-
* Copyright (c) 2010 Damien Bergamini <damien.bergamini@free.fr>
* Copyright (c) 2014 Kevin Lo <kevlo@FreeBSD.org>
* Copyright (c) 2015-2016 Andriy Voskoboinyk <avos@FreeBSD.org>
*
* Permission to use, copy, modify, and 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.
*/
#include <sys/cdefs.h>
__FBSDID("$FreeBSD$");
#include <rtems/bsd/local/opt_wlan.h>
#include <sys/param.h>
#include <sys/lock.h>
#include <sys/mutex.h>
#include <sys/mbuf.h>
#include <sys/kernel.h>
#include <sys/socket.h>
#include <sys/systm.h>
#include <sys/malloc.h>
#include <sys/queue.h>
#include <sys/taskqueue.h>
#include <sys/bus.h>
#include <sys/endian.h>
#include <sys/linker.h>
#include <net/if.h>
#include <net/ethernet.h>
#include <net/if_media.h>
#include <net80211/ieee80211_var.h>
#include <net80211/ieee80211_radiotap.h>
#include <dev/rtwn/if_rtwnreg.h>
#include <dev/rtwn/if_rtwnvar.h>
#include <dev/rtwn/if_rtwn_ridx.h>
#include <dev/rtwn/rtl8192c/r92c.h>
#include <dev/rtwn/rtl8192c/r92c_rx_desc.h>
int8_t
r92c_get_rssi_cck(struct rtwn_softc *sc, void *physt)
{
static const int8_t cckoff[] = { 16, -12, -26, -46 };
struct r92c_rx_cck *cck = (struct r92c_rx_cck *)physt;
uint8_t rpt;
int8_t rssi;
if (sc->sc_flags & RTWN_FLAG_CCK_HIPWR) {
rpt = (cck->agc_rpt >> 5) & 0x03;
rssi = (cck->agc_rpt & 0x1f) << 1;
} else {
rpt = (cck->agc_rpt >> 6) & 0x03;
rssi = cck->agc_rpt & 0x3e;
}
rssi = cckoff[rpt] - rssi;
return (rssi);
}
int8_t
r92c_get_rssi_ofdm(struct rtwn_softc *sc, void *physt)
{
struct r92c_rx_phystat *phy = (struct r92c_rx_phystat *)physt;
int rssi;
/* Get average RSSI. */
rssi = ((phy->pwdb_all >> 1) & 0x7f) - 110;
return (rssi);
}
uint8_t
r92c_rx_radiotap_flags(const void *buf)
{
const struct r92c_rx_stat *stat = buf;
uint8_t flags, rate;
if (!(stat->rxdw3 & htole32(R92C_RXDW3_SPLCP)))
return (0);
rate = MS(le32toh(stat->rxdw3), R92C_RXDW3_RATE);
if (RTWN_RATE_IS_CCK(rate))
flags = IEEE80211_RADIOTAP_F_SHORTPRE;
else
flags = IEEE80211_RADIOTAP_F_SHORTGI;
return (flags);
}
void
r92c_get_rx_stats(struct rtwn_softc *sc, struct ieee80211_rx_stats *rxs,
const void *desc, const void *physt_ptr)
{
const struct r92c_rx_stat *stat = desc;
uint32_t rxdw1, rxdw3;
uint8_t rate;
rxdw1 = le32toh(stat->rxdw1);
rxdw3 = le32toh(stat->rxdw3);
rate = MS(rxdw3, R92C_RXDW3_RATE);
if (rxdw1 & R92C_RXDW1_AMPDU)
rxs->c_pktflags |= IEEE80211_RX_F_AMPDU;
else if (rxdw1 & R92C_RXDW1_AMPDU_MORE)
rxs->c_pktflags |= IEEE80211_RX_F_AMPDU_MORE;
if ((rxdw3 & R92C_RXDW3_SPLCP) && rate >= RTWN_RIDX_MCS(0))
rxs->c_pktflags |= IEEE80211_RX_F_SHORTGI;
if (rxdw3 & R92C_RXDW3_HT40)
rxs->c_width = IEEE80211_RX_FW_40MHZ;
else
rxs->c_width = IEEE80211_RX_FW_20MHZ;
if (RTWN_RATE_IS_CCK(rate))
rxs->c_phytype = IEEE80211_RX_FP_11B;
else if (rate < RTWN_RIDX_MCS(0))
rxs->c_phytype = IEEE80211_RX_FP_11G;
else
rxs->c_phytype = IEEE80211_RX_FP_11NG;
/* Map HW rate index to 802.11 rate. */
if (rate < RTWN_RIDX_MCS(0)) {
rxs->c_rate = ridx2rate[rate];
if (RTWN_RATE_IS_CCK(rate))
rxs->c_pktflags |= IEEE80211_RX_F_CCK;
else
rxs->c_pktflags |= IEEE80211_RX_F_OFDM;
} else { /* MCS0~15. */
rxs->c_rate = IEEE80211_RATE_MCS | (rate - 12);
rxs->c_pktflags |= IEEE80211_RX_F_HT;
}
}
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