diff options
Diffstat (limited to 'freebsd/sys/dev/rtwn/if_rtwn_calib.c')
| -rw-r--r-- | freebsd/sys/dev/rtwn/if_rtwn_calib.c | 130 |
1 files changed, 130 insertions, 0 deletions
diff --git a/freebsd/sys/dev/rtwn/if_rtwn_calib.c b/freebsd/sys/dev/rtwn/if_rtwn_calib.c new file mode 100644 index 00000000..8943b557 --- /dev/null +++ b/freebsd/sys/dev/rtwn/if_rtwn_calib.c @@ -0,0 +1,130 @@ +#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 <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_rtwnvar.h> + +#include <dev/rtwn/if_rtwn_calib.h> +#include <dev/rtwn/if_rtwn_debug.h> +#include <dev/rtwn/if_rtwn_task.h> + + +static void +rtwn_temp_calib(struct rtwn_softc *sc) +{ + uint8_t temp; + + RTWN_ASSERT_LOCKED(sc); + + if (!(sc->sc_flags & RTWN_TEMP_MEASURED)) { + /* Start measuring temperature. */ + RTWN_DPRINTF(sc, RTWN_DEBUG_TEMP, + "%s: start measuring temperature\n", __func__); + rtwn_temp_measure(sc); + sc->sc_flags |= RTWN_TEMP_MEASURED; + return; + } + sc->sc_flags &= ~RTWN_TEMP_MEASURED; + + /* Read measured temperature. */ + temp = rtwn_temp_read(sc); + if (temp == 0) { /* Read failed, skip. */ + RTWN_DPRINTF(sc, RTWN_DEBUG_TEMP, + "%s: temperature read failed, skipping\n", __func__); + return; + } + + RTWN_DPRINTF(sc, RTWN_DEBUG_TEMP, + "temperature: previous %u, current %u\n", + sc->thcal_temp, temp); + + /* + * Redo LC/IQ calibration if temperature changed significantly since + * last calibration. + */ + if (sc->thcal_temp == 0xff) { + /* efuse value is absent; do LCK at initial status. */ + rtwn_lc_calib(sc); + + sc->thcal_temp = temp; + } else if (abs(temp - sc->thcal_temp) > sc->temp_delta) { + RTWN_DPRINTF(sc, RTWN_DEBUG_TEMP, + "%s: LC/IQ calib triggered by temp: %u -> %u\n", + __func__, sc->thcal_temp, temp); + + rtwn_lc_calib(sc); + rtwn_iq_calib(sc); + + /* Record temperature of last calibration. */ + sc->thcal_temp = temp; + } +} + +static void +rtwn_calib_cb(struct rtwn_softc *sc, union sec_param *data) +{ + /* Do temperature compensation. */ + rtwn_temp_calib(sc); + +#ifndef RTWN_WITHOUT_UCODE + if (sc->sc_ratectl == RTWN_RATECTL_FW) { + /* Refresh per-node RSSI. */ + rtwn_set_rssi(sc); + } +#endif + + if (sc->vaps_running > sc->monvaps_running) + callout_reset(&sc->sc_calib_to, 2*hz, rtwn_calib_to, sc); +} + +void +rtwn_calib_to(void *arg) +{ + struct rtwn_softc *sc = arg; + + /* Do it in a process context. */ + rtwn_cmd_sleepable(sc, NULL, 0, rtwn_calib_cb); +} |