b8e29e065d
It turns out that these will clash very annoyingly with the linux macros in the linuxkpi layer, so let the wookie^Wlinux win. The only user that I can find is ath(4), so fix it there too.
1019 lines
29 KiB
C
1019 lines
29 KiB
C
/*-
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* Copyright (c) 2013 Adrian Chadd <adrian@FreeBSD.org>
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer,
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* without modification.
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* 2. Redistributions in binary form must reproduce at minimum a disclaimer
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* similar to the "NO WARRANTY" disclaimer below ("Disclaimer") and any
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* redistribution must be conditioned upon including a substantially
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* similar Disclaimer requirement for further binary redistribution.
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*
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* NO WARRANTY
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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* ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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* LIMITED TO, THE IMPLIED WARRANTIES OF NONINFRINGEMENT, MERCHANTIBILITY
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* AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL
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* THE COPYRIGHT HOLDERS OR CONTRIBUTORS BE LIABLE FOR SPECIAL, EXEMPLARY,
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* OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER
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* IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF
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* THE POSSIBILITY OF SUCH DAMAGES.
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*
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* $FreeBSD$
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*/
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#include <sys/cdefs.h>
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__FBSDID("$FreeBSD$");
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/*
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* This module handles LNA diversity for those chips which implement LNA
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* mixing (AR9285/AR9485.)
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*/
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#include "opt_ath.h"
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#include "opt_inet.h"
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#include "opt_wlan.h"
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#include <sys/param.h>
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#include <sys/systm.h>
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#include <sys/sysctl.h>
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#include <sys/kernel.h>
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#include <sys/lock.h>
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#include <sys/malloc.h>
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#include <sys/mutex.h>
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#include <sys/errno.h>
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#include <machine/bus.h>
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#include <machine/resource.h>
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#include <sys/bus.h>
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#include <sys/socket.h>
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#include <net/if.h>
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#include <net/if_var.h>
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#include <net/if_media.h>
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#include <net/if_arp.h>
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#include <net/ethernet.h> /* XXX for ether_sprintf */
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#include <net80211/ieee80211_var.h>
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#include <net/bpf.h>
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#ifdef INET
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#include <netinet/in.h>
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#include <netinet/if_ether.h>
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#endif
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#include <dev/ath/if_athvar.h>
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#include <dev/ath/if_ath_debug.h>
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#include <dev/ath/if_ath_lna_div.h>
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/* Linux compability macros */
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/*
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* XXX these don't handle rounding, underflow, overflow, wrapping!
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*/
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#define msecs_to_jiffies(a) ( (a) * hz / 1000 )
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/*
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* Methods which are required
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*/
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/*
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* Attach the LNA diversity to the given interface
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*/
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int
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ath_lna_div_attach(struct ath_softc *sc)
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{
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struct if_ath_ant_comb_state *ss;
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HAL_ANT_COMB_CONFIG div_ant_conf;
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/* Only do this if diversity is enabled */
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if (! ath_hal_hasdivantcomb(sc->sc_ah))
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return (0);
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ss = malloc(sizeof(struct if_ath_ant_comb_state),
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M_TEMP, M_WAITOK | M_ZERO);
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if (ss == NULL) {
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device_printf(sc->sc_dev, "%s: failed to allocate\n",
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__func__);
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/* Don't fail at this point */
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return (0);
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}
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/* Fetch the hardware configuration */
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OS_MEMZERO(&div_ant_conf, sizeof(div_ant_conf));
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ath_hal_div_comb_conf_get(sc->sc_ah, &div_ant_conf);
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/* Figure out what the hardware specific bits should be */
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if ((div_ant_conf.antdiv_configgroup == HAL_ANTDIV_CONFIG_GROUP_1) ||
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(div_ant_conf.antdiv_configgroup == HAL_ANTDIV_CONFIG_GROUP_2)) {
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ss->lna1_lna2_delta = -9;
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} else {
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ss->lna1_lna2_delta = -3;
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}
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/* Let's flip this on */
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sc->sc_lna_div = ss;
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sc->sc_dolnadiv = 1;
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return (0);
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}
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/*
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* Detach the LNA diversity state from the given interface
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*/
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int
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ath_lna_div_detach(struct ath_softc *sc)
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{
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if (sc->sc_lna_div != NULL) {
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free(sc->sc_lna_div, M_TEMP);
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sc->sc_lna_div = NULL;
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}
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sc->sc_dolnadiv = 0;
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return (0);
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}
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/*
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* Enable LNA diversity on the current channel if it's required.
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*/
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int
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ath_lna_div_enable(struct ath_softc *sc, const struct ieee80211_channel *chan)
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{
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return (0);
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}
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/*
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* Handle ioctl requests from the diagnostic interface.
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*
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* The initial part of this code resembles ath_ioctl_diag();
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* it's likely a good idea to reduce duplication between
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* these two routines.
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*/
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int
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ath_lna_div_ioctl(struct ath_softc *sc, struct ath_diag *ad)
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{
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unsigned int id = ad->ad_id & ATH_DIAG_ID;
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void *indata = NULL;
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void *outdata = NULL;
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u_int32_t insize = ad->ad_in_size;
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u_int32_t outsize = ad->ad_out_size;
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int error = 0;
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// int val;
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if (ad->ad_id & ATH_DIAG_IN) {
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/*
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* Copy in data.
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*/
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indata = malloc(insize, M_TEMP, M_NOWAIT);
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if (indata == NULL) {
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error = ENOMEM;
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goto bad;
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}
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error = copyin(ad->ad_in_data, indata, insize);
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if (error)
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goto bad;
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}
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if (ad->ad_id & ATH_DIAG_DYN) {
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/*
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* Allocate a buffer for the results (otherwise the HAL
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* returns a pointer to a buffer where we can read the
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* results). Note that we depend on the HAL leaving this
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* pointer for us to use below in reclaiming the buffer;
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* may want to be more defensive.
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*/
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outdata = malloc(outsize, M_TEMP, M_NOWAIT);
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if (outdata == NULL) {
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error = ENOMEM;
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goto bad;
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}
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}
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switch (id) {
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default:
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error = EINVAL;
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}
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if (outsize < ad->ad_out_size)
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ad->ad_out_size = outsize;
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if (outdata && copyout(outdata, ad->ad_out_data, ad->ad_out_size))
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error = EFAULT;
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bad:
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if ((ad->ad_id & ATH_DIAG_IN) && indata != NULL)
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free(indata, M_TEMP);
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if ((ad->ad_id & ATH_DIAG_DYN) && outdata != NULL)
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free(outdata, M_TEMP);
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return (error);
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}
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/*
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* XXX need to low_rssi_thresh config from ath9k, to support CUS198
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* antenna diversity correctly.
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*/
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static HAL_BOOL
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ath_is_alt_ant_ratio_better(int alt_ratio, int maxdelta, int mindelta,
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int main_rssi_avg, int alt_rssi_avg, int pkt_count)
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{
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return (((alt_ratio >= ATH_ANT_DIV_COMB_ALT_ANT_RATIO2) &&
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(alt_rssi_avg > main_rssi_avg + maxdelta)) ||
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(alt_rssi_avg > main_rssi_avg + mindelta)) && (pkt_count > 50);
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}
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static void
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ath_lnaconf_alt_good_scan(struct if_ath_ant_comb_state *antcomb,
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HAL_ANT_COMB_CONFIG *ant_conf, int main_rssi_avg)
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{
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antcomb->quick_scan_cnt = 0;
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if (ant_conf->main_lna_conf == HAL_ANT_DIV_COMB_LNA2)
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antcomb->rssi_lna2 = main_rssi_avg;
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else if (ant_conf->main_lna_conf == HAL_ANT_DIV_COMB_LNA1)
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antcomb->rssi_lna1 = main_rssi_avg;
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switch ((ant_conf->main_lna_conf << 4) | ant_conf->alt_lna_conf) {
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case (0x10): /* LNA2 A-B */
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antcomb->main_conf = HAL_ANT_DIV_COMB_LNA1_MINUS_LNA2;
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antcomb->first_quick_scan_conf =
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HAL_ANT_DIV_COMB_LNA1_PLUS_LNA2;
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antcomb->second_quick_scan_conf = HAL_ANT_DIV_COMB_LNA1;
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break;
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case (0x20): /* LNA1 A-B */
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antcomb->main_conf = HAL_ANT_DIV_COMB_LNA1_MINUS_LNA2;
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antcomb->first_quick_scan_conf =
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HAL_ANT_DIV_COMB_LNA1_PLUS_LNA2;
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antcomb->second_quick_scan_conf = HAL_ANT_DIV_COMB_LNA2;
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break;
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case (0x21): /* LNA1 LNA2 */
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antcomb->main_conf = HAL_ANT_DIV_COMB_LNA2;
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antcomb->first_quick_scan_conf =
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HAL_ANT_DIV_COMB_LNA1_MINUS_LNA2;
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antcomb->second_quick_scan_conf =
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HAL_ANT_DIV_COMB_LNA1_PLUS_LNA2;
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break;
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case (0x12): /* LNA2 LNA1 */
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antcomb->main_conf = HAL_ANT_DIV_COMB_LNA1;
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antcomb->first_quick_scan_conf =
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HAL_ANT_DIV_COMB_LNA1_MINUS_LNA2;
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antcomb->second_quick_scan_conf =
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HAL_ANT_DIV_COMB_LNA1_PLUS_LNA2;
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break;
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case (0x13): /* LNA2 A+B */
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antcomb->main_conf = HAL_ANT_DIV_COMB_LNA1_PLUS_LNA2;
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antcomb->first_quick_scan_conf =
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HAL_ANT_DIV_COMB_LNA1_MINUS_LNA2;
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antcomb->second_quick_scan_conf = HAL_ANT_DIV_COMB_LNA1;
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break;
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case (0x23): /* LNA1 A+B */
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antcomb->main_conf = HAL_ANT_DIV_COMB_LNA1_PLUS_LNA2;
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antcomb->first_quick_scan_conf =
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HAL_ANT_DIV_COMB_LNA1_MINUS_LNA2;
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antcomb->second_quick_scan_conf = HAL_ANT_DIV_COMB_LNA2;
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break;
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default:
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break;
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}
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}
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static void
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ath_select_ant_div_from_quick_scan(struct if_ath_ant_comb_state *antcomb,
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HAL_ANT_COMB_CONFIG *div_ant_conf, int main_rssi_avg,
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int alt_rssi_avg, int alt_ratio)
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{
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/* alt_good */
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switch (antcomb->quick_scan_cnt) {
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case 0:
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/* set alt to main, and alt to first conf */
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div_ant_conf->main_lna_conf = antcomb->main_conf;
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div_ant_conf->alt_lna_conf = antcomb->first_quick_scan_conf;
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break;
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case 1:
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/* set alt to main, and alt to first conf */
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div_ant_conf->main_lna_conf = antcomb->main_conf;
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div_ant_conf->alt_lna_conf = antcomb->second_quick_scan_conf;
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antcomb->rssi_first = main_rssi_avg;
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antcomb->rssi_second = alt_rssi_avg;
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if (antcomb->main_conf == HAL_ANT_DIV_COMB_LNA1) {
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/* main is LNA1 */
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if (ath_is_alt_ant_ratio_better(alt_ratio,
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ATH_ANT_DIV_COMB_LNA1_DELTA_HI,
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ATH_ANT_DIV_COMB_LNA1_DELTA_LOW,
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main_rssi_avg, alt_rssi_avg,
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antcomb->total_pkt_count))
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antcomb->first_ratio = AH_TRUE;
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else
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antcomb->first_ratio = AH_FALSE;
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} else if (antcomb->main_conf == HAL_ANT_DIV_COMB_LNA2) {
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if (ath_is_alt_ant_ratio_better(alt_ratio,
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ATH_ANT_DIV_COMB_LNA1_DELTA_MID,
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ATH_ANT_DIV_COMB_LNA1_DELTA_LOW,
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main_rssi_avg, alt_rssi_avg,
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antcomb->total_pkt_count))
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antcomb->first_ratio = AH_TRUE;
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else
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antcomb->first_ratio = AH_FALSE;
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} else {
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if ((((alt_ratio >= ATH_ANT_DIV_COMB_ALT_ANT_RATIO2) &&
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(alt_rssi_avg > main_rssi_avg +
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ATH_ANT_DIV_COMB_LNA1_DELTA_HI)) ||
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(alt_rssi_avg > main_rssi_avg)) &&
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(antcomb->total_pkt_count > 50))
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antcomb->first_ratio = AH_TRUE;
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else
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antcomb->first_ratio = AH_FALSE;
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}
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break;
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case 2:
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antcomb->alt_good = AH_FALSE;
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antcomb->scan_not_start = AH_FALSE;
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antcomb->scan = AH_FALSE;
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antcomb->rssi_first = main_rssi_avg;
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antcomb->rssi_third = alt_rssi_avg;
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if (antcomb->second_quick_scan_conf == HAL_ANT_DIV_COMB_LNA1)
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antcomb->rssi_lna1 = alt_rssi_avg;
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else if (antcomb->second_quick_scan_conf ==
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HAL_ANT_DIV_COMB_LNA2)
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antcomb->rssi_lna2 = alt_rssi_avg;
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else if (antcomb->second_quick_scan_conf ==
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HAL_ANT_DIV_COMB_LNA1_PLUS_LNA2) {
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if (antcomb->main_conf == HAL_ANT_DIV_COMB_LNA2)
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antcomb->rssi_lna2 = main_rssi_avg;
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else if (antcomb->main_conf == HAL_ANT_DIV_COMB_LNA1)
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antcomb->rssi_lna1 = main_rssi_avg;
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}
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if (antcomb->rssi_lna2 > antcomb->rssi_lna1 +
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ATH_ANT_DIV_COMB_LNA1_LNA2_SWITCH_DELTA)
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div_ant_conf->main_lna_conf = HAL_ANT_DIV_COMB_LNA2;
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else
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div_ant_conf->main_lna_conf = HAL_ANT_DIV_COMB_LNA1;
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if (antcomb->main_conf == HAL_ANT_DIV_COMB_LNA1) {
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if (ath_is_alt_ant_ratio_better(alt_ratio,
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ATH_ANT_DIV_COMB_LNA1_DELTA_HI,
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ATH_ANT_DIV_COMB_LNA1_DELTA_LOW,
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main_rssi_avg, alt_rssi_avg,
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antcomb->total_pkt_count))
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antcomb->second_ratio = AH_TRUE;
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else
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antcomb->second_ratio = AH_FALSE;
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} else if (antcomb->main_conf == HAL_ANT_DIV_COMB_LNA2) {
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if (ath_is_alt_ant_ratio_better(alt_ratio,
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ATH_ANT_DIV_COMB_LNA1_DELTA_MID,
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ATH_ANT_DIV_COMB_LNA1_DELTA_LOW,
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main_rssi_avg, alt_rssi_avg,
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antcomb->total_pkt_count))
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antcomb->second_ratio = AH_TRUE;
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else
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antcomb->second_ratio = AH_FALSE;
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} else {
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if ((((alt_ratio >= ATH_ANT_DIV_COMB_ALT_ANT_RATIO2) &&
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(alt_rssi_avg > main_rssi_avg +
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ATH_ANT_DIV_COMB_LNA1_DELTA_HI)) ||
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(alt_rssi_avg > main_rssi_avg)) &&
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(antcomb->total_pkt_count > 50))
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antcomb->second_ratio = AH_TRUE;
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else
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antcomb->second_ratio = AH_FALSE;
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}
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/* set alt to the conf with maximun ratio */
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if (antcomb->first_ratio && antcomb->second_ratio) {
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if (antcomb->rssi_second > antcomb->rssi_third) {
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/* first alt*/
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if ((antcomb->first_quick_scan_conf ==
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HAL_ANT_DIV_COMB_LNA1) ||
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(antcomb->first_quick_scan_conf ==
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HAL_ANT_DIV_COMB_LNA2))
|
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/* Set alt LNA1 or LNA2*/
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if (div_ant_conf->main_lna_conf ==
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HAL_ANT_DIV_COMB_LNA2)
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div_ant_conf->alt_lna_conf =
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HAL_ANT_DIV_COMB_LNA1;
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else
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div_ant_conf->alt_lna_conf =
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HAL_ANT_DIV_COMB_LNA2;
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else
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/* Set alt to A+B or A-B */
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div_ant_conf->alt_lna_conf =
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antcomb->first_quick_scan_conf;
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} else if ((antcomb->second_quick_scan_conf ==
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HAL_ANT_DIV_COMB_LNA1) ||
|
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(antcomb->second_quick_scan_conf ==
|
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HAL_ANT_DIV_COMB_LNA2)) {
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/* Set alt LNA1 or LNA2 */
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if (div_ant_conf->main_lna_conf ==
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HAL_ANT_DIV_COMB_LNA2)
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div_ant_conf->alt_lna_conf =
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HAL_ANT_DIV_COMB_LNA1;
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else
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div_ant_conf->alt_lna_conf =
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HAL_ANT_DIV_COMB_LNA2;
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} else {
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/* Set alt to A+B or A-B */
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div_ant_conf->alt_lna_conf =
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antcomb->second_quick_scan_conf;
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}
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} else if (antcomb->first_ratio) {
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/* first alt */
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if ((antcomb->first_quick_scan_conf ==
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HAL_ANT_DIV_COMB_LNA1) ||
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(antcomb->first_quick_scan_conf ==
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HAL_ANT_DIV_COMB_LNA2))
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/* Set alt LNA1 or LNA2 */
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if (div_ant_conf->main_lna_conf ==
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HAL_ANT_DIV_COMB_LNA2)
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div_ant_conf->alt_lna_conf =
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HAL_ANT_DIV_COMB_LNA1;
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else
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div_ant_conf->alt_lna_conf =
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HAL_ANT_DIV_COMB_LNA2;
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else
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/* Set alt to A+B or A-B */
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div_ant_conf->alt_lna_conf =
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antcomb->first_quick_scan_conf;
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} else if (antcomb->second_ratio) {
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/* second alt */
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if ((antcomb->second_quick_scan_conf ==
|
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HAL_ANT_DIV_COMB_LNA1) ||
|
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(antcomb->second_quick_scan_conf ==
|
|
HAL_ANT_DIV_COMB_LNA2))
|
|
/* Set alt LNA1 or LNA2 */
|
|
if (div_ant_conf->main_lna_conf ==
|
|
HAL_ANT_DIV_COMB_LNA2)
|
|
div_ant_conf->alt_lna_conf =
|
|
HAL_ANT_DIV_COMB_LNA1;
|
|
else
|
|
div_ant_conf->alt_lna_conf =
|
|
HAL_ANT_DIV_COMB_LNA2;
|
|
else
|
|
/* Set alt to A+B or A-B */
|
|
div_ant_conf->alt_lna_conf =
|
|
antcomb->second_quick_scan_conf;
|
|
} else {
|
|
/* main is largest */
|
|
if ((antcomb->main_conf == HAL_ANT_DIV_COMB_LNA1) ||
|
|
(antcomb->main_conf == HAL_ANT_DIV_COMB_LNA2))
|
|
/* Set alt LNA1 or LNA2 */
|
|
if (div_ant_conf->main_lna_conf ==
|
|
HAL_ANT_DIV_COMB_LNA2)
|
|
div_ant_conf->alt_lna_conf =
|
|
HAL_ANT_DIV_COMB_LNA1;
|
|
else
|
|
div_ant_conf->alt_lna_conf =
|
|
HAL_ANT_DIV_COMB_LNA2;
|
|
else
|
|
/* Set alt to A+B or A-B */
|
|
div_ant_conf->alt_lna_conf = antcomb->main_conf;
|
|
}
|
|
break;
|
|
default:
|
|
break;
|
|
}
|
|
}
|
|
|
|
static void
|
|
ath_ant_adjust_fast_divbias(struct if_ath_ant_comb_state *antcomb,
|
|
int alt_ratio, int alt_ant_ratio_th, u_int config_group,
|
|
HAL_ANT_COMB_CONFIG *pdiv_ant_conf)
|
|
{
|
|
|
|
if (config_group == HAL_ANTDIV_CONFIG_GROUP_1) {
|
|
switch ((pdiv_ant_conf->main_lna_conf << 4)
|
|
| pdiv_ant_conf->alt_lna_conf) {
|
|
case (0x01): //A-B LNA2
|
|
pdiv_ant_conf->fast_div_bias = 0x1;
|
|
pdiv_ant_conf->main_gaintb = 0;
|
|
pdiv_ant_conf->alt_gaintb = 0;
|
|
break;
|
|
case (0x02): //A-B LNA1
|
|
pdiv_ant_conf->fast_div_bias = 0x1;
|
|
pdiv_ant_conf->main_gaintb = 0;
|
|
pdiv_ant_conf->alt_gaintb = 0;
|
|
break;
|
|
case (0x03): //A-B A+B
|
|
pdiv_ant_conf->fast_div_bias = 0x1;
|
|
pdiv_ant_conf->main_gaintb = 0;
|
|
pdiv_ant_conf->alt_gaintb = 0;
|
|
break;
|
|
case (0x10): //LNA2 A-B
|
|
if ((antcomb->scan == 0)
|
|
&& (alt_ratio > ATH_ANT_DIV_COMB_ALT_ANT_RATIO)) {
|
|
pdiv_ant_conf->fast_div_bias = 0x3f;
|
|
} else {
|
|
pdiv_ant_conf->fast_div_bias = 0x1;
|
|
}
|
|
pdiv_ant_conf->main_gaintb = 0;
|
|
pdiv_ant_conf->alt_gaintb = 0;
|
|
break;
|
|
case (0x12): //LNA2 LNA1
|
|
pdiv_ant_conf->fast_div_bias = 0x1;
|
|
pdiv_ant_conf->main_gaintb = 0;
|
|
pdiv_ant_conf->alt_gaintb = 0;
|
|
break;
|
|
case (0x13): //LNA2 A+B
|
|
if ((antcomb->scan == 0)
|
|
&& (alt_ratio > ATH_ANT_DIV_COMB_ALT_ANT_RATIO)) {
|
|
pdiv_ant_conf->fast_div_bias = 0x3f;
|
|
} else {
|
|
pdiv_ant_conf->fast_div_bias = 0x1;
|
|
}
|
|
pdiv_ant_conf->main_gaintb = 0;
|
|
pdiv_ant_conf->alt_gaintb = 0;
|
|
break;
|
|
case (0x20): //LNA1 A-B
|
|
if ((antcomb->scan == 0)
|
|
&& (alt_ratio > ATH_ANT_DIV_COMB_ALT_ANT_RATIO)) {
|
|
pdiv_ant_conf->fast_div_bias = 0x3f;
|
|
} else {
|
|
pdiv_ant_conf->fast_div_bias = 0x1;
|
|
}
|
|
pdiv_ant_conf->main_gaintb = 0;
|
|
pdiv_ant_conf->alt_gaintb = 0;
|
|
break;
|
|
case (0x21): //LNA1 LNA2
|
|
pdiv_ant_conf->fast_div_bias = 0x1;
|
|
pdiv_ant_conf->main_gaintb = 0;
|
|
pdiv_ant_conf->alt_gaintb = 0;
|
|
break;
|
|
case (0x23): //LNA1 A+B
|
|
if ((antcomb->scan == 0)
|
|
&& (alt_ratio > ATH_ANT_DIV_COMB_ALT_ANT_RATIO)) {
|
|
pdiv_ant_conf->fast_div_bias = 0x3f;
|
|
} else {
|
|
pdiv_ant_conf->fast_div_bias = 0x1;
|
|
}
|
|
pdiv_ant_conf->main_gaintb = 0;
|
|
pdiv_ant_conf->alt_gaintb = 0;
|
|
break;
|
|
case (0x30): //A+B A-B
|
|
pdiv_ant_conf->fast_div_bias = 0x1;
|
|
pdiv_ant_conf->main_gaintb = 0;
|
|
pdiv_ant_conf->alt_gaintb = 0;
|
|
break;
|
|
case (0x31): //A+B LNA2
|
|
pdiv_ant_conf->fast_div_bias = 0x1;
|
|
pdiv_ant_conf->main_gaintb = 0;
|
|
pdiv_ant_conf->alt_gaintb = 0;
|
|
break;
|
|
case (0x32): //A+B LNA1
|
|
pdiv_ant_conf->fast_div_bias = 0x1;
|
|
pdiv_ant_conf->main_gaintb = 0;
|
|
pdiv_ant_conf->alt_gaintb = 0;
|
|
break;
|
|
default:
|
|
break;
|
|
}
|
|
} else if (config_group == HAL_ANTDIV_CONFIG_GROUP_2) {
|
|
switch ((pdiv_ant_conf->main_lna_conf << 4)
|
|
| pdiv_ant_conf->alt_lna_conf) {
|
|
case (0x01): //A-B LNA2
|
|
pdiv_ant_conf->fast_div_bias = 0x1;
|
|
pdiv_ant_conf->main_gaintb = 0;
|
|
pdiv_ant_conf->alt_gaintb = 0;
|
|
break;
|
|
case (0x02): //A-B LNA1
|
|
pdiv_ant_conf->fast_div_bias = 0x1;
|
|
pdiv_ant_conf->main_gaintb = 0;
|
|
pdiv_ant_conf->alt_gaintb = 0;
|
|
break;
|
|
case (0x03): //A-B A+B
|
|
pdiv_ant_conf->fast_div_bias = 0x1;
|
|
pdiv_ant_conf->main_gaintb = 0;
|
|
pdiv_ant_conf->alt_gaintb = 0;
|
|
break;
|
|
case (0x10): //LNA2 A-B
|
|
if ((antcomb->scan == 0)
|
|
&& (alt_ratio > alt_ant_ratio_th)) {
|
|
pdiv_ant_conf->fast_div_bias = 0x1;
|
|
} else {
|
|
pdiv_ant_conf->fast_div_bias = 0x2;
|
|
}
|
|
pdiv_ant_conf->main_gaintb = 0;
|
|
pdiv_ant_conf->alt_gaintb = 0;
|
|
break;
|
|
case (0x12): //LNA2 LNA1
|
|
pdiv_ant_conf->fast_div_bias = 0x1;
|
|
pdiv_ant_conf->main_gaintb = 0;
|
|
pdiv_ant_conf->alt_gaintb = 0;
|
|
break;
|
|
case (0x13): //LNA2 A+B
|
|
if ((antcomb->scan == 0)
|
|
&& (alt_ratio > alt_ant_ratio_th)) {
|
|
pdiv_ant_conf->fast_div_bias = 0x1;
|
|
} else {
|
|
pdiv_ant_conf->fast_div_bias = 0x2;
|
|
}
|
|
pdiv_ant_conf->main_gaintb = 0;
|
|
pdiv_ant_conf->alt_gaintb = 0;
|
|
break;
|
|
case (0x20): //LNA1 A-B
|
|
if ((antcomb->scan == 0)
|
|
&& (alt_ratio > alt_ant_ratio_th)) {
|
|
pdiv_ant_conf->fast_div_bias = 0x1;
|
|
} else {
|
|
pdiv_ant_conf->fast_div_bias = 0x2;
|
|
}
|
|
pdiv_ant_conf->main_gaintb = 0;
|
|
pdiv_ant_conf->alt_gaintb = 0;
|
|
break;
|
|
case (0x21): //LNA1 LNA2
|
|
pdiv_ant_conf->fast_div_bias = 0x1;
|
|
pdiv_ant_conf->main_gaintb = 0;
|
|
pdiv_ant_conf->alt_gaintb = 0;
|
|
break;
|
|
case (0x23): //LNA1 A+B
|
|
if ((antcomb->scan == 0)
|
|
&& (alt_ratio > alt_ant_ratio_th)) {
|
|
pdiv_ant_conf->fast_div_bias = 0x1;
|
|
} else {
|
|
pdiv_ant_conf->fast_div_bias = 0x2;
|
|
}
|
|
pdiv_ant_conf->main_gaintb = 0;
|
|
pdiv_ant_conf->alt_gaintb = 0;
|
|
break;
|
|
case (0x30): //A+B A-B
|
|
pdiv_ant_conf->fast_div_bias = 0x1;
|
|
pdiv_ant_conf->main_gaintb = 0;
|
|
pdiv_ant_conf->alt_gaintb = 0;
|
|
break;
|
|
case (0x31): //A+B LNA2
|
|
pdiv_ant_conf->fast_div_bias = 0x1;
|
|
pdiv_ant_conf->main_gaintb = 0;
|
|
pdiv_ant_conf->alt_gaintb = 0;
|
|
break;
|
|
case (0x32): //A+B LNA1
|
|
pdiv_ant_conf->fast_div_bias = 0x1;
|
|
pdiv_ant_conf->main_gaintb = 0;
|
|
pdiv_ant_conf->alt_gaintb = 0;
|
|
break;
|
|
default:
|
|
break;
|
|
}
|
|
} else { /* DEFAULT_ANTDIV_CONFIG_GROUP */
|
|
switch ((pdiv_ant_conf->main_lna_conf << 4) | pdiv_ant_conf->alt_lna_conf) {
|
|
case (0x01): //A-B LNA2
|
|
pdiv_ant_conf->fast_div_bias = 0x3b;
|
|
break;
|
|
case (0x02): //A-B LNA1
|
|
pdiv_ant_conf->fast_div_bias = 0x3d;
|
|
break;
|
|
case (0x03): //A-B A+B
|
|
pdiv_ant_conf->fast_div_bias = 0x1;
|
|
break;
|
|
case (0x10): //LNA2 A-B
|
|
pdiv_ant_conf->fast_div_bias = 0x7;
|
|
break;
|
|
case (0x12): //LNA2 LNA1
|
|
pdiv_ant_conf->fast_div_bias = 0x2;
|
|
break;
|
|
case (0x13): //LNA2 A+B
|
|
pdiv_ant_conf->fast_div_bias = 0x7;
|
|
break;
|
|
case (0x20): //LNA1 A-B
|
|
pdiv_ant_conf->fast_div_bias = 0x6;
|
|
break;
|
|
case (0x21): //LNA1 LNA2
|
|
pdiv_ant_conf->fast_div_bias = 0x0;
|
|
break;
|
|
case (0x23): //LNA1 A+B
|
|
pdiv_ant_conf->fast_div_bias = 0x6;
|
|
break;
|
|
case (0x30): //A+B A-B
|
|
pdiv_ant_conf->fast_div_bias = 0x1;
|
|
break;
|
|
case (0x31): //A+B LNA2
|
|
pdiv_ant_conf->fast_div_bias = 0x3b;
|
|
break;
|
|
case (0x32): //A+B LNA1
|
|
pdiv_ant_conf->fast_div_bias = 0x3d;
|
|
break;
|
|
default:
|
|
break;
|
|
}
|
|
}
|
|
}
|
|
|
|
/*
|
|
* AR9485/AR933x TODO:
|
|
* + Select a ratio based on whether RSSI is low or not; but I need
|
|
* to figure out what "low_rssi_th" is sourced from.
|
|
* + What's ath_ant_div_comb_alt_check() in the reference driver do?
|
|
* + .. and there's likely a bunch of other things to include in this.
|
|
*/
|
|
|
|
/* Antenna diversity and combining */
|
|
void
|
|
ath_lna_rx_comb_scan(struct ath_softc *sc, struct ath_rx_status *rs,
|
|
unsigned long ticks, int hz)
|
|
{
|
|
HAL_ANT_COMB_CONFIG div_ant_conf;
|
|
struct if_ath_ant_comb_state *antcomb = sc->sc_lna_div;
|
|
int alt_ratio = 0, alt_rssi_avg = 0, main_rssi_avg = 0, curr_alt_set;
|
|
int curr_main_set, curr_bias;
|
|
int main_rssi = rs->rs_rssi_ctl[0];
|
|
int alt_rssi = rs->rs_rssi_ctl[1];
|
|
int rx_ant_conf, main_ant_conf, alt_ant_conf;
|
|
HAL_BOOL short_scan = AH_FALSE;
|
|
|
|
rx_ant_conf = (rs->rs_rssi_ctl[2] >> 4) & ATH_ANT_RX_MASK;
|
|
main_ant_conf = (rs->rs_rssi_ctl[2] >> 2) & ATH_ANT_RX_MASK;
|
|
alt_ant_conf = (rs->rs_rssi_ctl[2] >> 0) & ATH_ANT_RX_MASK;
|
|
|
|
#if 0
|
|
DPRINTF(sc, ATH_DEBUG_DIVERSITY,
|
|
"%s: RSSI %d/%d, conf %x/%x, rxconf %x, LNA: %d; ANT: %d; "
|
|
"FastDiv: %d\n",
|
|
__func__,
|
|
main_rssi,
|
|
alt_rssi,
|
|
main_ant_conf,
|
|
alt_ant_conf,
|
|
rx_ant_conf,
|
|
!!(rs->rs_rssi_ctl[2] & 0x80),
|
|
!!(rs->rs_rssi_ctl[2] & 0x40),
|
|
!!(rs->rs_rssi_ext[2] & 0x40));
|
|
#endif
|
|
|
|
/*
|
|
* If LNA diversity combining isn't enabled, don't run this.
|
|
*/
|
|
if (! sc->sc_dolnadiv)
|
|
return;
|
|
|
|
/*
|
|
* XXX this is ugly, but the HAL code attaches the
|
|
* LNA diversity to the TX antenna settings.
|
|
* I don't know why.
|
|
*/
|
|
if (sc->sc_txantenna != HAL_ANT_VARIABLE)
|
|
return;
|
|
|
|
/* Record packet only when alt_rssi is positive */
|
|
if (main_rssi > 0 && alt_rssi > 0) {
|
|
antcomb->total_pkt_count++;
|
|
antcomb->main_total_rssi += main_rssi;
|
|
antcomb->alt_total_rssi += alt_rssi;
|
|
if (main_ant_conf == rx_ant_conf)
|
|
antcomb->main_recv_cnt++;
|
|
else
|
|
antcomb->alt_recv_cnt++;
|
|
}
|
|
|
|
/* Short scan check */
|
|
if (antcomb->scan && antcomb->alt_good) {
|
|
if (ieee80211_time_after(ticks, antcomb->scan_start_time +
|
|
msecs_to_jiffies(ATH_ANT_DIV_COMB_SHORT_SCAN_INTR)))
|
|
short_scan = AH_TRUE;
|
|
else
|
|
if (antcomb->total_pkt_count ==
|
|
ATH_ANT_DIV_COMB_SHORT_SCAN_PKTCOUNT) {
|
|
alt_ratio = ((antcomb->alt_recv_cnt * 100) /
|
|
antcomb->total_pkt_count);
|
|
if (alt_ratio < ATH_ANT_DIV_COMB_ALT_ANT_RATIO)
|
|
short_scan = AH_TRUE;
|
|
}
|
|
}
|
|
|
|
#if 0
|
|
DPRINTF(sc, ATH_DEBUG_DIVERSITY,
|
|
"%s: total pkt=%d, aggr=%d, short_scan=%d\n",
|
|
__func__,
|
|
antcomb->total_pkt_count,
|
|
!! (rs->rs_moreaggr),
|
|
!! (short_scan));
|
|
#endif
|
|
|
|
if (((antcomb->total_pkt_count < ATH_ANT_DIV_COMB_MAX_PKTCOUNT) ||
|
|
rs->rs_moreaggr) && !short_scan)
|
|
return;
|
|
|
|
if (antcomb->total_pkt_count) {
|
|
alt_ratio = ((antcomb->alt_recv_cnt * 100) /
|
|
antcomb->total_pkt_count);
|
|
main_rssi_avg = (antcomb->main_total_rssi /
|
|
antcomb->total_pkt_count);
|
|
alt_rssi_avg = (antcomb->alt_total_rssi /
|
|
antcomb->total_pkt_count);
|
|
}
|
|
|
|
OS_MEMZERO(&div_ant_conf, sizeof(div_ant_conf));
|
|
|
|
ath_hal_div_comb_conf_get(sc->sc_ah, &div_ant_conf);
|
|
curr_alt_set = div_ant_conf.alt_lna_conf;
|
|
curr_main_set = div_ant_conf.main_lna_conf;
|
|
curr_bias = div_ant_conf.fast_div_bias;
|
|
|
|
antcomb->count++;
|
|
|
|
if (antcomb->count == ATH_ANT_DIV_COMB_MAX_COUNT) {
|
|
if (alt_ratio > ATH_ANT_DIV_COMB_ALT_ANT_RATIO) {
|
|
ath_lnaconf_alt_good_scan(antcomb, &div_ant_conf,
|
|
main_rssi_avg);
|
|
antcomb->alt_good = AH_TRUE;
|
|
} else {
|
|
antcomb->alt_good = AH_FALSE;
|
|
}
|
|
|
|
antcomb->count = 0;
|
|
antcomb->scan = AH_TRUE;
|
|
antcomb->scan_not_start = AH_TRUE;
|
|
}
|
|
|
|
if (!antcomb->scan) {
|
|
if (alt_ratio > ATH_ANT_DIV_COMB_ALT_ANT_RATIO) {
|
|
if (curr_alt_set == HAL_ANT_DIV_COMB_LNA2) {
|
|
/* Switch main and alt LNA */
|
|
div_ant_conf.main_lna_conf =
|
|
HAL_ANT_DIV_COMB_LNA2;
|
|
div_ant_conf.alt_lna_conf =
|
|
HAL_ANT_DIV_COMB_LNA1;
|
|
} else if (curr_alt_set == HAL_ANT_DIV_COMB_LNA1) {
|
|
div_ant_conf.main_lna_conf =
|
|
HAL_ANT_DIV_COMB_LNA1;
|
|
div_ant_conf.alt_lna_conf =
|
|
HAL_ANT_DIV_COMB_LNA2;
|
|
}
|
|
|
|
goto div_comb_done;
|
|
} else if ((curr_alt_set != HAL_ANT_DIV_COMB_LNA1) &&
|
|
(curr_alt_set != HAL_ANT_DIV_COMB_LNA2)) {
|
|
/* Set alt to another LNA */
|
|
if (curr_main_set == HAL_ANT_DIV_COMB_LNA2)
|
|
div_ant_conf.alt_lna_conf =
|
|
HAL_ANT_DIV_COMB_LNA1;
|
|
else if (curr_main_set == HAL_ANT_DIV_COMB_LNA1)
|
|
div_ant_conf.alt_lna_conf =
|
|
HAL_ANT_DIV_COMB_LNA2;
|
|
|
|
goto div_comb_done;
|
|
}
|
|
|
|
if ((alt_rssi_avg < (main_rssi_avg +
|
|
antcomb->lna1_lna2_delta)))
|
|
goto div_comb_done;
|
|
}
|
|
|
|
if (!antcomb->scan_not_start) {
|
|
switch (curr_alt_set) {
|
|
case HAL_ANT_DIV_COMB_LNA2:
|
|
antcomb->rssi_lna2 = alt_rssi_avg;
|
|
antcomb->rssi_lna1 = main_rssi_avg;
|
|
antcomb->scan = AH_TRUE;
|
|
/* set to A+B */
|
|
div_ant_conf.main_lna_conf =
|
|
HAL_ANT_DIV_COMB_LNA1;
|
|
div_ant_conf.alt_lna_conf =
|
|
HAL_ANT_DIV_COMB_LNA1_PLUS_LNA2;
|
|
break;
|
|
case HAL_ANT_DIV_COMB_LNA1:
|
|
antcomb->rssi_lna1 = alt_rssi_avg;
|
|
antcomb->rssi_lna2 = main_rssi_avg;
|
|
antcomb->scan = AH_TRUE;
|
|
/* set to A+B */
|
|
div_ant_conf.main_lna_conf = HAL_ANT_DIV_COMB_LNA2;
|
|
div_ant_conf.alt_lna_conf =
|
|
HAL_ANT_DIV_COMB_LNA1_PLUS_LNA2;
|
|
break;
|
|
case HAL_ANT_DIV_COMB_LNA1_PLUS_LNA2:
|
|
antcomb->rssi_add = alt_rssi_avg;
|
|
antcomb->scan = AH_TRUE;
|
|
/* set to A-B */
|
|
div_ant_conf.alt_lna_conf =
|
|
HAL_ANT_DIV_COMB_LNA1_MINUS_LNA2;
|
|
break;
|
|
case HAL_ANT_DIV_COMB_LNA1_MINUS_LNA2:
|
|
antcomb->rssi_sub = alt_rssi_avg;
|
|
antcomb->scan = AH_FALSE;
|
|
if (antcomb->rssi_lna2 >
|
|
(antcomb->rssi_lna1 +
|
|
ATH_ANT_DIV_COMB_LNA1_LNA2_SWITCH_DELTA)) {
|
|
/* use LNA2 as main LNA */
|
|
if ((antcomb->rssi_add > antcomb->rssi_lna1) &&
|
|
(antcomb->rssi_add > antcomb->rssi_sub)) {
|
|
/* set to A+B */
|
|
div_ant_conf.main_lna_conf =
|
|
HAL_ANT_DIV_COMB_LNA2;
|
|
div_ant_conf.alt_lna_conf =
|
|
HAL_ANT_DIV_COMB_LNA1_PLUS_LNA2;
|
|
} else if (antcomb->rssi_sub >
|
|
antcomb->rssi_lna1) {
|
|
/* set to A-B */
|
|
div_ant_conf.main_lna_conf =
|
|
HAL_ANT_DIV_COMB_LNA2;
|
|
div_ant_conf.alt_lna_conf =
|
|
HAL_ANT_DIV_COMB_LNA1_MINUS_LNA2;
|
|
} else {
|
|
/* set to LNA1 */
|
|
div_ant_conf.main_lna_conf =
|
|
HAL_ANT_DIV_COMB_LNA2;
|
|
div_ant_conf.alt_lna_conf =
|
|
HAL_ANT_DIV_COMB_LNA1;
|
|
}
|
|
} else {
|
|
/* use LNA1 as main LNA */
|
|
if ((antcomb->rssi_add > antcomb->rssi_lna2) &&
|
|
(antcomb->rssi_add > antcomb->rssi_sub)) {
|
|
/* set to A+B */
|
|
div_ant_conf.main_lna_conf =
|
|
HAL_ANT_DIV_COMB_LNA1;
|
|
div_ant_conf.alt_lna_conf =
|
|
HAL_ANT_DIV_COMB_LNA1_PLUS_LNA2;
|
|
} else if (antcomb->rssi_sub >
|
|
antcomb->rssi_lna1) {
|
|
/* set to A-B */
|
|
div_ant_conf.main_lna_conf =
|
|
HAL_ANT_DIV_COMB_LNA1;
|
|
div_ant_conf.alt_lna_conf =
|
|
HAL_ANT_DIV_COMB_LNA1_MINUS_LNA2;
|
|
} else {
|
|
/* set to LNA2 */
|
|
div_ant_conf.main_lna_conf =
|
|
HAL_ANT_DIV_COMB_LNA1;
|
|
div_ant_conf.alt_lna_conf =
|
|
HAL_ANT_DIV_COMB_LNA2;
|
|
}
|
|
}
|
|
break;
|
|
default:
|
|
break;
|
|
}
|
|
} else {
|
|
if (!antcomb->alt_good) {
|
|
antcomb->scan_not_start = AH_FALSE;
|
|
/* Set alt to another LNA */
|
|
if (curr_main_set == HAL_ANT_DIV_COMB_LNA2) {
|
|
div_ant_conf.main_lna_conf =
|
|
HAL_ANT_DIV_COMB_LNA2;
|
|
div_ant_conf.alt_lna_conf =
|
|
HAL_ANT_DIV_COMB_LNA1;
|
|
} else if (curr_main_set == HAL_ANT_DIV_COMB_LNA1) {
|
|
div_ant_conf.main_lna_conf =
|
|
HAL_ANT_DIV_COMB_LNA1;
|
|
div_ant_conf.alt_lna_conf =
|
|
HAL_ANT_DIV_COMB_LNA2;
|
|
}
|
|
goto div_comb_done;
|
|
}
|
|
}
|
|
|
|
ath_select_ant_div_from_quick_scan(antcomb, &div_ant_conf,
|
|
main_rssi_avg, alt_rssi_avg,
|
|
alt_ratio);
|
|
|
|
antcomb->quick_scan_cnt++;
|
|
|
|
div_comb_done:
|
|
#if 0
|
|
ath_ant_div_conf_fast_divbias(&div_ant_conf);
|
|
#endif
|
|
|
|
ath_ant_adjust_fast_divbias(antcomb,
|
|
alt_ratio,
|
|
ATH_ANT_DIV_COMB_ALT_ANT_RATIO,
|
|
div_ant_conf.antdiv_configgroup,
|
|
&div_ant_conf);
|
|
|
|
ath_hal_div_comb_conf_set(sc->sc_ah, &div_ant_conf);
|
|
|
|
DPRINTF(sc, ATH_DEBUG_DIVERSITY, "%s: total_pkt_count=%d\n",
|
|
__func__, antcomb->total_pkt_count);
|
|
|
|
DPRINTF(sc, ATH_DEBUG_DIVERSITY, "%s: main_total_rssi=%d\n",
|
|
__func__, antcomb->main_total_rssi);
|
|
DPRINTF(sc, ATH_DEBUG_DIVERSITY, "%s: alt_total_rssi=%d\n",
|
|
__func__, antcomb->alt_total_rssi);
|
|
|
|
DPRINTF(sc, ATH_DEBUG_DIVERSITY, "%s: main_rssi_avg=%d\n",
|
|
__func__, main_rssi_avg);
|
|
DPRINTF(sc, ATH_DEBUG_DIVERSITY, "%s: alt_alt_rssi_avg=%d\n",
|
|
__func__, alt_rssi_avg);
|
|
|
|
DPRINTF(sc, ATH_DEBUG_DIVERSITY, "%s: main_recv_cnt=%d\n",
|
|
__func__, antcomb->main_recv_cnt);
|
|
DPRINTF(sc, ATH_DEBUG_DIVERSITY, "%s: alt_recv_cnt=%d\n",
|
|
__func__, antcomb->alt_recv_cnt);
|
|
|
|
// if (curr_alt_set != div_ant_conf.alt_lna_conf)
|
|
DPRINTF(sc, ATH_DEBUG_DIVERSITY, "%s: lna_conf: %x -> %x\n",
|
|
__func__, curr_alt_set, div_ant_conf.alt_lna_conf);
|
|
// if (curr_main_set != div_ant_conf.main_lna_conf)
|
|
DPRINTF(sc, ATH_DEBUG_DIVERSITY, "%s: main_lna_conf: %x -> %x\n",
|
|
__func__, curr_main_set, div_ant_conf.main_lna_conf);
|
|
// if (curr_bias != div_ant_conf.fast_div_bias)
|
|
DPRINTF(sc, ATH_DEBUG_DIVERSITY, "%s: fast_div_bias: %x -> %x\n",
|
|
__func__, curr_bias, div_ant_conf.fast_div_bias);
|
|
|
|
antcomb->scan_start_time = ticks;
|
|
antcomb->total_pkt_count = 0;
|
|
antcomb->main_total_rssi = 0;
|
|
antcomb->alt_total_rssi = 0;
|
|
antcomb->main_recv_cnt = 0;
|
|
antcomb->alt_recv_cnt = 0;
|
|
}
|
|
|