diff options
Diffstat (limited to 'freebsd/sys/dev/rtwn/rtl8192c/r92c_rx.c')
| -rw-r--r-- | freebsd/sys/dev/rtwn/rtl8192c/r92c_rx.c | 104 |
1 files changed, 104 insertions, 0 deletions
diff --git a/freebsd/sys/dev/rtwn/rtl8192c/r92c_rx.c b/freebsd/sys/dev/rtwn/rtl8192c/r92c_rx.c new file mode 100644 index 00000000..b77c76f6 --- /dev/null +++ b/freebsd/sys/dev/rtwn/rtl8192c/r92c_rx.c @@ -0,0 +1,104 @@ +#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 <rtems/bsd/sys/param.h> +#include <rtems/bsd/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); +} |