/*-
 * SPDX-License-Identifier: BSD-2-Clause
 *
 * Copyright (c) 2002-2009 Sam Leffler, Errno Consulting
 * All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 * 1. Redistributions of source code must retain the above copyright
 *    notice, this list of conditions and the following disclaimer,
 *    without modification.
 * 2. Redistributions in binary form must reproduce at minimum a disclaimer
 *    similar to the "NO WARRANTY" disclaimer below ("Disclaimer") and any
 *    redistribution must be conditioned upon including a substantially
 *    similar Disclaimer requirement for further binary redistribution.
 *
 * NO WARRANTY
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
 * LIMITED TO, THE IMPLIED WARRANTIES OF NONINFRINGEMENT, MERCHANTIBILITY
 * AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL
 * THE COPYRIGHT HOLDERS OR CONTRIBUTORS BE LIABLE FOR SPECIAL, EXEMPLARY,
 * OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER
 * IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF
 * THE POSSIBILITY OF SUCH DAMAGES.
 */

#include <sys/cdefs.h>
/*
 * Driver for the Atheros Wireless LAN controller.
 *
 * This software is derived from work of Atsushi Onoe; his contribution
 * is greatly appreciated.
 */

#include "opt_inet.h"
#include "opt_ath.h"
#include "opt_wlan.h"

#include <sys/param.h>
#include <sys/systm.h>
#include <sys/sysctl.h>
#include <sys/mbuf.h>
#include <sys/malloc.h>
#include <sys/lock.h>
#include <sys/mutex.h>
#include <sys/kernel.h>
#include <sys/socket.h>
#include <sys/sockio.h>
#include <sys/errno.h>
#include <sys/callout.h>
#include <sys/bus.h>
#include <sys/endian.h>
#include <sys/kthread.h>
#include <sys/taskqueue.h>
#include <sys/priv.h>

#include <machine/bus.h>

#include <net/if.h>
#include <net/if_var.h>
#include <net/if_dl.h>
#include <net/if_media.h>
#include <net/if_types.h>
#include <net/if_arp.h>
#include <net/ethernet.h>
#include <net/if_llc.h>

#include <net80211/ieee80211_var.h>
#include <net80211/ieee80211_regdomain.h>
#ifdef IEEE80211_SUPPORT_SUPERG
#include <net80211/ieee80211_superg.h>
#endif
#ifdef IEEE80211_SUPPORT_TDMA
#include <net80211/ieee80211_tdma.h>
#endif

#include <net/bpf.h>

#ifdef INET
#include <netinet/in.h>
#include <netinet/if_ether.h>
#endif

#include <dev/ath/if_athvar.h>
#include <dev/ath/ath_hal/ah_devid.h>           /* XXX for softled */
#include <dev/ath/ath_hal/ah_diagcodes.h>

#include <dev/ath/if_ath_debug.h>
#include <dev/ath/if_ath_led.h>
#include <dev/ath/if_ath_misc.h>
#include <dev/ath/if_ath_tx.h>
#include <dev/ath/if_ath_sysctl.h>

#ifdef ATH_TX99_DIAG
#include <dev/ath/ath_tx99/ath_tx99.h>
#endif

#ifdef  ATH_DEBUG_ALQ
#include <dev/ath/if_ath_alq.h>
#endif

static int
ath_sysctl_slottime(SYSCTL_HANDLER_ARGS)
{
        struct ath_softc *sc = arg1;
        u_int slottime;
        int error;

        ATH_LOCK(sc);
        ath_power_set_power_state(sc, HAL_PM_AWAKE);
        slottime = ath_hal_getslottime(sc->sc_ah);
        ATH_UNLOCK(sc);

        error = sysctl_handle_int(oidp, &slottime, 0, req);
        if (error || !req->newptr)
                goto finish;

        error = !ath_hal_setslottime(sc->sc_ah, slottime) ? EINVAL : 0;

finish:
        ATH_LOCK(sc);
        ath_power_restore_power_state(sc);
        ATH_UNLOCK(sc);

        return error;
}

static int
ath_sysctl_acktimeout(SYSCTL_HANDLER_ARGS)
{
        struct ath_softc *sc = arg1;
        u_int acktimeout;
        int error;

        ATH_LOCK(sc);
        ath_power_set_power_state(sc, HAL_PM_AWAKE);
        acktimeout = ath_hal_getacktimeout(sc->sc_ah);
        ATH_UNLOCK(sc);

        error = sysctl_handle_int(oidp, &acktimeout, 0, req);
        if (error || !req->newptr)
                goto finish;

        error = !ath_hal_setacktimeout(sc->sc_ah, acktimeout) ? EINVAL : 0;

finish:
        ATH_LOCK(sc);
        ath_power_restore_power_state(sc);
        ATH_UNLOCK(sc);

        return (error);
}

static int
ath_sysctl_ctstimeout(SYSCTL_HANDLER_ARGS)
{
        struct ath_softc *sc = arg1;
        u_int ctstimeout;
        int error;

        ATH_LOCK(sc);
        ath_power_set_power_state(sc, HAL_PM_AWAKE);
        ctstimeout = ath_hal_getctstimeout(sc->sc_ah);
        ATH_UNLOCK(sc);

        error = sysctl_handle_int(oidp, &ctstimeout, 0, req);
        if (error || !req->newptr)
                goto finish;

        error = !ath_hal_setctstimeout(sc->sc_ah, ctstimeout) ? EINVAL : 0;

finish:
        ATH_LOCK(sc);
        ath_power_restore_power_state(sc);
        ATH_UNLOCK(sc);

        return (error);
}

static int
ath_sysctl_softled(SYSCTL_HANDLER_ARGS)
{
        struct ath_softc *sc = arg1;
        int softled = sc->sc_softled;
        int error;

        error = sysctl_handle_int(oidp, &softled, 0, req);
        if (error || !req->newptr)
                return error;
        softled = (softled != 0);
        if (softled != sc->sc_softled) {
                if (softled) {
                        /* NB: handle any sc_ledpin change */
                        ath_led_config(sc);
                }
                sc->sc_softled = softled;
        }
        return 0;
}

static int
ath_sysctl_ledpin(SYSCTL_HANDLER_ARGS)
{
        struct ath_softc *sc = arg1;
        int ledpin = sc->sc_ledpin;
        int error;

        error = sysctl_handle_int(oidp, &ledpin, 0, req);
        if (error || !req->newptr)
                return error;
        if (ledpin != sc->sc_ledpin) {
                sc->sc_ledpin = ledpin;
                if (sc->sc_softled) {
                        ath_led_config(sc);
                }
        }
        return 0;
}

static int
ath_sysctl_hardled(SYSCTL_HANDLER_ARGS)
{
        struct ath_softc *sc = arg1;
        int hardled = sc->sc_hardled;
        int error;

        error = sysctl_handle_int(oidp, &hardled, 0, req);
        if (error || !req->newptr)
                return error;
        hardled = (hardled != 0);
        if (hardled != sc->sc_hardled) {
                if (hardled) {
                        /* NB: handle any sc_ledpin change */
                        ath_led_config(sc);
                }
                sc->sc_hardled = hardled;
        }
        return 0;
}

static int
ath_sysctl_txantenna(SYSCTL_HANDLER_ARGS)
{
        struct ath_softc *sc = arg1;
        u_int txantenna;
        int error;

        ATH_LOCK(sc);
        ath_power_set_power_state(sc, HAL_PM_AWAKE);
        ATH_UNLOCK(sc);

        txantenna = ath_hal_getantennaswitch(sc->sc_ah);

        error = sysctl_handle_int(oidp, &txantenna, 0, req);
        if (!error && req->newptr) {
                /* XXX assumes 2 antenna ports */
                if (txantenna < HAL_ANT_VARIABLE || txantenna > HAL_ANT_FIXED_B) {
                        error = EINVAL;
                        goto finish;
                }
                ath_hal_setantennaswitch(sc->sc_ah, txantenna);
                /*
                 * NB: with the switch locked this isn't meaningful,
                 *     but set it anyway so things like radiotap get
                 *     consistent info in their data.
                 */
                sc->sc_txantenna = txantenna;
        }

finish:
        ATH_LOCK(sc);
        ath_power_restore_power_state(sc);
        ATH_UNLOCK(sc);

        return (error);
}

static int
ath_sysctl_rxantenna(SYSCTL_HANDLER_ARGS)
{
        struct ath_softc *sc = arg1;
        u_int defantenna;
        int error;

        ATH_LOCK(sc);
        ath_power_set_power_state(sc, HAL_PM_AWAKE);
        defantenna = ath_hal_getdefantenna(sc->sc_ah);
        ATH_UNLOCK(sc);

        error = sysctl_handle_int(oidp, &defantenna, 0, req);
        if (!error && req->newptr)
                ath_hal_setdefantenna(sc->sc_ah, defantenna);

        ATH_LOCK(sc);
        ath_power_restore_power_state(sc);
        ATH_UNLOCK(sc);

        return (error);
}

static int
ath_sysctl_diversity(SYSCTL_HANDLER_ARGS)
{
        struct ath_softc *sc = arg1;
        u_int diversity;
        int error;

        ATH_LOCK(sc);
        ath_power_set_power_state(sc, HAL_PM_AWAKE);
        ATH_UNLOCK(sc);

        diversity = ath_hal_getdiversity(sc->sc_ah);

        error = sysctl_handle_int(oidp, &diversity, 0, req);
        if (error || !req->newptr)
                goto finish;
        if (!ath_hal_setdiversity(sc->sc_ah, diversity)) {
                error = EINVAL;
                goto finish;
        }
        sc->sc_diversity = diversity;
        error = 0;

finish:
        ATH_LOCK(sc);
        ath_power_restore_power_state(sc);
        ATH_UNLOCK(sc);

        return (error);
}

static int
ath_sysctl_diag(SYSCTL_HANDLER_ARGS)
{
        struct ath_softc *sc = arg1;
        u_int32_t diag;
        int error;

        ATH_LOCK(sc);
        ath_power_set_power_state(sc, HAL_PM_AWAKE);
        ATH_UNLOCK(sc);

        if (!ath_hal_getdiag(sc->sc_ah, &diag)) {
                error = EINVAL;
                goto finish;
        }

        error = sysctl_handle_int(oidp, &diag, 0, req);
        if (error || !req->newptr)
                goto finish;
        error = !ath_hal_setdiag(sc->sc_ah, diag) ? EINVAL : 0;

finish:
        ATH_LOCK(sc);
        ath_power_restore_power_state(sc);
        ATH_UNLOCK(sc);

        return (error);
}

static int
ath_sysctl_tpscale(SYSCTL_HANDLER_ARGS)
{
        struct ath_softc *sc = arg1;
        u_int32_t scale;
        int error;

        ATH_LOCK(sc);
        ath_power_set_power_state(sc, HAL_PM_AWAKE);
        ATH_UNLOCK(sc);

        (void) ath_hal_gettpscale(sc->sc_ah, &scale);
        error = sysctl_handle_int(oidp, &scale, 0, req);
        if (error || !req->newptr)
                goto finish;

        error = !ath_hal_settpscale(sc->sc_ah, scale) ? EINVAL :
            (sc->sc_running) ? ath_reset(sc, ATH_RESET_NOLOSS,
            HAL_RESET_NORMAL) : 0;

finish:
        ATH_LOCK(sc);
        ath_power_restore_power_state(sc);
        ATH_UNLOCK(sc);

        return (error);
}

static int
ath_sysctl_tpc(SYSCTL_HANDLER_ARGS)
{
        struct ath_softc *sc = arg1;
        u_int tpc;
        int error;

        ATH_LOCK(sc);
        ath_power_set_power_state(sc, HAL_PM_AWAKE);
        ATH_UNLOCK(sc);

        tpc = ath_hal_gettpc(sc->sc_ah);

        error = sysctl_handle_int(oidp, &tpc, 0, req);
        if (error || !req->newptr)
                goto finish;
        error = !ath_hal_settpc(sc->sc_ah, tpc) ? EINVAL : 0;

finish:
        ATH_LOCK(sc);
        ath_power_restore_power_state(sc);
        ATH_UNLOCK(sc);

        return (error);
}

static int
ath_sysctl_rfkill(SYSCTL_HANDLER_ARGS)
{
        struct ath_softc *sc = arg1;
        struct ath_hal *ah = sc->sc_ah;
        u_int rfkill;
        int error;

        ATH_LOCK(sc);
        ath_power_set_power_state(sc, HAL_PM_AWAKE);
        ATH_UNLOCK(sc);

        rfkill = ath_hal_getrfkill(ah);

        error = sysctl_handle_int(oidp, &rfkill, 0, req);
        if (error || !req->newptr)
                goto finish;
        if (rfkill == ath_hal_getrfkill(ah)) {  /* unchanged */
                error = 0;
                goto finish;
        }
        if (!ath_hal_setrfkill(ah, rfkill)) {
                error = EINVAL;
                goto finish;
        }
        error = sc->sc_running ? ath_reset(sc, ATH_RESET_FULL,
            HAL_RESET_NORMAL) : 0;

finish:
        ATH_LOCK(sc);
        ath_power_restore_power_state(sc);
        ATH_UNLOCK(sc);

        return (error);
}

static int
ath_sysctl_txagg(SYSCTL_HANDLER_ARGS)
{
        struct ath_softc *sc = arg1;
        int i, t, param = 0;
        int error;
        struct ath_buf *bf;

        error = sysctl_handle_int(oidp, &param, 0, req);
        if (error || !req->newptr)
                return error;

        if (param != 1)
                return 0;

        printf("no tx bufs (empty list): %d\n", sc->sc_stats.ast_tx_getnobuf);
        printf("no tx bufs (was busy): %d\n", sc->sc_stats.ast_tx_getbusybuf);

        printf("aggr single packet: %d\n",
            sc->sc_aggr_stats.aggr_single_pkt);
        printf("aggr single packet w/ BAW closed: %d\n",
            sc->sc_aggr_stats.aggr_baw_closed_single_pkt);
        printf("aggr non-baw packet: %d\n",
            sc->sc_aggr_stats.aggr_nonbaw_pkt);
        printf("aggr aggregate packet: %d\n",
            sc->sc_aggr_stats.aggr_aggr_pkt);
        printf("aggr single packet low hwq: %d\n",
            sc->sc_aggr_stats.aggr_low_hwq_single_pkt);
        printf("aggr single packet RTS aggr limited: %d\n",
            sc->sc_aggr_stats.aggr_rts_aggr_limited);
        printf("aggr sched, no work: %d\n",
            sc->sc_aggr_stats.aggr_sched_nopkt);
        for (i = 0; i < 64; i++) {
                printf("%2d: %10d ", i, sc->sc_aggr_stats.aggr_pkts[i]);
                if (i % 4 == 3)
                        printf("\n");
        }
        printf("\n");

        for (i = 0; i < HAL_NUM_TX_QUEUES; i++) {
                if (ATH_TXQ_SETUP(sc, i)) {
                        printf("HW TXQ %d: axq_depth=%d, axq_aggr_depth=%d, "
                            "axq_fifo_depth=%d, holdingbf=%p\n",
                            i,
                            sc->sc_txq[i].axq_depth,
                            sc->sc_txq[i].axq_aggr_depth,
                            sc->sc_txq[i].axq_fifo_depth,
                            sc->sc_txq[i].axq_holdingbf);
                }
        }

        i = t = 0;
        ATH_TXBUF_LOCK(sc);
        TAILQ_FOREACH(bf, &sc->sc_txbuf, bf_list) {
                if (bf->bf_flags & ATH_BUF_BUSY) {
                        printf("Busy: %d\n", t);
                        i++;
                }
                t++;
        }
        ATH_TXBUF_UNLOCK(sc);
        printf("Total TX buffers: %d; Total TX buffers busy: %d (%d)\n",
            t, i, sc->sc_txbuf_cnt);

        i = t = 0;
        ATH_TXBUF_LOCK(sc);
        TAILQ_FOREACH(bf, &sc->sc_txbuf_mgmt, bf_list) {
                if (bf->bf_flags & ATH_BUF_BUSY) {
                        printf("Busy: %d\n", t);
                        i++;
                }
                t++;
        }
        ATH_TXBUF_UNLOCK(sc);
        printf("Total mgmt TX buffers: %d; Total mgmt TX buffers busy: %d\n",
            t, i);

        ATH_RX_LOCK(sc);
        for (i = 0; i < 2; i++) {
                printf("%d: fifolen: %d/%d; head=%d; tail=%d; m_pending=%p, m_holdbf=%p\n",
                    i,
                    sc->sc_rxedma[i].m_fifo_depth,
                    sc->sc_rxedma[i].m_fifolen,
                    sc->sc_rxedma[i].m_fifo_head,
                    sc->sc_rxedma[i].m_fifo_tail,
                    sc->sc_rxedma[i].m_rxpending,
                    sc->sc_rxedma[i].m_holdbf);
        }
        i = 0;
        TAILQ_FOREACH(bf, &sc->sc_rxbuf, bf_list) {
                i++;
        }
        printf("Total RX buffers in free list: %d buffers\n",
            i);
        ATH_RX_UNLOCK(sc);

        return 0;
}

static int
ath_sysctl_rfsilent(SYSCTL_HANDLER_ARGS)
{
        struct ath_softc *sc = arg1;
        u_int rfsilent;
        int error;

        ATH_LOCK(sc);
        ath_power_set_power_state(sc, HAL_PM_AWAKE);
        ATH_UNLOCK(sc);

        (void) ath_hal_getrfsilent(sc->sc_ah, &rfsilent);
        error = sysctl_handle_int(oidp, &rfsilent, 0, req);
        if (error || !req->newptr)
                goto finish;
        if (!ath_hal_setrfsilent(sc->sc_ah, rfsilent)) {
                error = EINVAL;
                goto finish;
        }
        /*
         * Earlier chips (< AR5212) have up to 8 GPIO
         * pins exposed.
         *
         * AR5416 and later chips have many more GPIO
         * pins (up to 16) so the mask is expanded to
         * four bits.
         */
        sc->sc_rfsilentpin = rfsilent & 0x3c;
        sc->sc_rfsilentpol = (rfsilent & 0x2) != 0;
        error = 0;

finish:
        ATH_LOCK(sc);
        ath_power_restore_power_state(sc);
        ATH_UNLOCK(sc);

        return (error);
}

static int
ath_sysctl_tpack(SYSCTL_HANDLER_ARGS)
{
        struct ath_softc *sc = arg1;
        u_int32_t tpack;
        int error;

        ATH_LOCK(sc);
        ath_power_set_power_state(sc, HAL_PM_AWAKE);
        ATH_UNLOCK(sc);

        (void) ath_hal_gettpack(sc->sc_ah, &tpack);
        error = sysctl_handle_int(oidp, &tpack, 0, req);
        if (error || !req->newptr)
                goto finish;
        error = !ath_hal_settpack(sc->sc_ah, tpack) ? EINVAL : 0;

finish:
        ATH_LOCK(sc);
        ath_power_restore_power_state(sc);
        ATH_UNLOCK(sc);

        return (error);
}

static int
ath_sysctl_tpcts(SYSCTL_HANDLER_ARGS)
{
        struct ath_softc *sc = arg1;
        u_int32_t tpcts;
        int error;

        ATH_LOCK(sc);
        ath_power_set_power_state(sc, HAL_PM_AWAKE);
        ATH_UNLOCK(sc);

        (void) ath_hal_gettpcts(sc->sc_ah, &tpcts);
        error = sysctl_handle_int(oidp, &tpcts, 0, req);
        if (error || !req->newptr)
                goto finish;

        error = !ath_hal_settpcts(sc->sc_ah, tpcts) ? EINVAL : 0;

finish:
        ATH_LOCK(sc);
        ath_power_restore_power_state(sc);
        ATH_UNLOCK(sc);

        return (error);
}

static int
ath_sysctl_intmit(SYSCTL_HANDLER_ARGS)
{
        struct ath_softc *sc = arg1;
        int intmit, error;

        ATH_LOCK(sc);
        ath_power_set_power_state(sc, HAL_PM_AWAKE);
        ATH_UNLOCK(sc);

        intmit = ath_hal_getintmit(sc->sc_ah);
        error = sysctl_handle_int(oidp, &intmit, 0, req);
        if (error || !req->newptr)
                goto finish;

        /* reusing error; 1 here means "good"; 0 means "fail" */
        error = ath_hal_setintmit(sc->sc_ah, intmit);
        if (! error) {
                error = EINVAL;
                goto finish;
        }

        /*
         * Reset the hardware here - disabling ANI in the HAL
         * doesn't reset ANI related registers, so it'll leave
         * things in an inconsistent state.
         */
        if (sc->sc_running)
                ath_reset(sc, ATH_RESET_NOLOSS, HAL_RESET_NORMAL);

        error = 0;

finish:
        ATH_LOCK(sc);
        ath_power_restore_power_state(sc);
        ATH_UNLOCK(sc);

        return (error);
}

#ifdef IEEE80211_SUPPORT_TDMA
static int
ath_sysctl_setcca(SYSCTL_HANDLER_ARGS)
{
        struct ath_softc *sc = arg1;
        int setcca, error;

        setcca = sc->sc_setcca;
        error = sysctl_handle_int(oidp, &setcca, 0, req);
        if (error || !req->newptr)
                return error;
        sc->sc_setcca = (setcca != 0);
        return 0;
}
#endif /* IEEE80211_SUPPORT_TDMA */

static int
ath_sysctl_forcebstuck(SYSCTL_HANDLER_ARGS)
{
        struct ath_softc *sc = arg1;
        int val = 0;
        int error;

        error = sysctl_handle_int(oidp, &val, 0, req);
        if (error || !req->newptr)
                return error;
        if (val == 0)
                return 0;

        taskqueue_enqueue(sc->sc_tq, &sc->sc_bstucktask);
        val = 0;
        return 0;
}

static int
ath_sysctl_hangcheck(SYSCTL_HANDLER_ARGS)
{
        struct ath_softc *sc = arg1;
        int val = 0;
        int error;
        uint32_t mask = 0xffffffff;
        uint32_t *sp;
        uint32_t rsize;
        struct ath_hal *ah = sc->sc_ah;

        error = sysctl_handle_int(oidp, &val, 0, req);
        if (error || !req->newptr)
                return error;
        if (val == 0)
                return 0;

        ATH_LOCK(sc);
        ath_power_set_power_state(sc, HAL_PM_AWAKE);
        ATH_UNLOCK(sc);

        /* Do a hang check */
        if (!ath_hal_getdiagstate(ah, HAL_DIAG_CHECK_HANGS,
            &mask, sizeof(mask),
            (void *) &sp, &rsize)) {
                error = 0;
                goto finish;
        }

        device_printf(sc->sc_dev, "%s: sp=0x%08x\n", __func__, *sp);

        val = 0;
        error = 0;
finish:
        ATH_LOCK(sc);
        ath_power_restore_power_state(sc);
        ATH_UNLOCK(sc);

        return (error);
}

#ifdef ATH_DEBUG_ALQ
static int
ath_sysctl_alq_log(SYSCTL_HANDLER_ARGS)
{
        struct ath_softc *sc = arg1;
        int error, enable;

        enable = (sc->sc_alq.sc_alq_isactive);

        error = sysctl_handle_int(oidp, &enable, 0, req);
        if (error || !req->newptr)
                return (error);
        else if (enable)
                error = if_ath_alq_start(&sc->sc_alq);
        else
                error = if_ath_alq_stop(&sc->sc_alq);
        return (error);
}

/*
 * Attach the ALQ debugging if required.
 */
static void
ath_sysctl_alq_attach(struct ath_softc *sc)
{
        struct sysctl_oid *tree = device_get_sysctl_tree(sc->sc_dev);
        struct sysctl_ctx_list *ctx = device_get_sysctl_ctx(sc->sc_dev);
        struct sysctl_oid_list *child = SYSCTL_CHILDREN(tree);

        tree = SYSCTL_ADD_NODE(ctx, child, OID_AUTO, "alq",
            CTLFLAG_RD | CTLFLAG_MPSAFE, NULL,
            "Atheros ALQ logging parameters");
        child = SYSCTL_CHILDREN(tree);

        SYSCTL_ADD_STRING(ctx, child, OID_AUTO, "filename",
            CTLFLAG_RW, sc->sc_alq.sc_alq_filename, 0, "ALQ filename");

        SYSCTL_ADD_PROC(ctx, SYSCTL_CHILDREN(tree), OID_AUTO,
            "enable", CTLTYPE_INT | CTLFLAG_RW | CTLFLAG_NEEDGIANT, sc, 0,
            ath_sysctl_alq_log, "I", "");

        SYSCTL_ADD_UINT(ctx, SYSCTL_CHILDREN(tree), OID_AUTO,
                "debugmask", CTLFLAG_RW, &sc->sc_alq.sc_alq_debug, 0,
                "ALQ debug mask");

        SYSCTL_ADD_UINT(ctx, SYSCTL_CHILDREN(tree), OID_AUTO,
                "numlost", CTLFLAG_RW, &sc->sc_alq.sc_alq_numlost, 0,
                "number lost");
}
#endif /* ATH_DEBUG_ALQ */

void
ath_sysctlattach(struct ath_softc *sc)
{
        struct sysctl_ctx_list *ctx = device_get_sysctl_ctx(sc->sc_dev);
        struct sysctl_oid *tree = device_get_sysctl_tree(sc->sc_dev);
        struct ath_hal *ah = sc->sc_ah;

        SYSCTL_ADD_UINT(ctx, SYSCTL_CHILDREN(tree), OID_AUTO,
                "countrycode", CTLFLAG_RD, &sc->sc_eecc, 0,
                "EEPROM country code");
        SYSCTL_ADD_UINT(ctx, SYSCTL_CHILDREN(tree), OID_AUTO,
                "regdomain", CTLFLAG_RD, &sc->sc_eerd, 0,
                "EEPROM regdomain code");
#ifdef  ATH_DEBUG
        SYSCTL_ADD_QUAD(ctx, SYSCTL_CHILDREN(tree), OID_AUTO,
                "debug", CTLFLAG_RW, &sc->sc_debug,
                "control debugging printfs");
#endif
#ifdef  ATH_DEBUG_ALQ
        SYSCTL_ADD_QUAD(ctx, SYSCTL_CHILDREN(tree), OID_AUTO,
                "ktrdebug", CTLFLAG_RW, &sc->sc_ktrdebug,
                "control debugging KTR");
#endif /* ATH_DEBUG_ALQ */
        SYSCTL_ADD_PROC(ctx, SYSCTL_CHILDREN(tree), OID_AUTO,
            "slottime", CTLTYPE_INT | CTLFLAG_RW | CTLFLAG_NEEDGIANT, sc, 0,
            ath_sysctl_slottime, "I", "802.11 slot time (us)");
        SYSCTL_ADD_PROC(ctx, SYSCTL_CHILDREN(tree), OID_AUTO,
            "acktimeout", CTLTYPE_INT | CTLFLAG_RW | CTLFLAG_NEEDGIANT, sc, 0,
            ath_sysctl_acktimeout, "I", "802.11 ACK timeout (us)");
        SYSCTL_ADD_PROC(ctx, SYSCTL_CHILDREN(tree), OID_AUTO,
            "ctstimeout", CTLTYPE_INT | CTLFLAG_RW | CTLFLAG_NEEDGIANT, sc, 0,
            ath_sysctl_ctstimeout, "I", "802.11 CTS timeout (us)");

        SYSCTL_ADD_PROC(ctx, SYSCTL_CHILDREN(tree), OID_AUTO,
            "softled", CTLTYPE_INT | CTLFLAG_RW | CTLFLAG_NEEDGIANT, sc, 0,
            ath_sysctl_softled, "I", "enable/disable software LED support");
        SYSCTL_ADD_PROC(ctx, SYSCTL_CHILDREN(tree), OID_AUTO,
            "ledpin", CTLTYPE_INT | CTLFLAG_RW | CTLFLAG_NEEDGIANT, sc, 0,
            ath_sysctl_ledpin, "I", "GPIO pin connected to LED");
        SYSCTL_ADD_UINT(ctx, SYSCTL_CHILDREN(tree), OID_AUTO,
                "ledon", CTLFLAG_RW, &sc->sc_ledon, 0,
                "setting to turn LED on");
        SYSCTL_ADD_UINT(ctx, SYSCTL_CHILDREN(tree), OID_AUTO,
                "ledidle", CTLFLAG_RW, &sc->sc_ledidle, 0,
                "idle time for inactivity LED (ticks)");

        SYSCTL_ADD_PROC(ctx, SYSCTL_CHILDREN(tree), OID_AUTO,
            "hardled", CTLTYPE_INT | CTLFLAG_RW | CTLFLAG_NEEDGIANT, sc, 0,
            ath_sysctl_hardled, "I", "enable/disable hardware LED support");
        /* XXX Laziness - configure pins, then flip hardled off/on */
        SYSCTL_ADD_INT(ctx, SYSCTL_CHILDREN(tree), OID_AUTO,
                "led_net_pin", CTLFLAG_RW, &sc->sc_led_net_pin, 0,
                "MAC Network LED pin, or -1 to disable");
        SYSCTL_ADD_INT(ctx, SYSCTL_CHILDREN(tree), OID_AUTO,
                "led_pwr_pin", CTLFLAG_RW, &sc->sc_led_pwr_pin, 0,
                "MAC Power LED pin, or -1 to disable");

        SYSCTL_ADD_PROC(ctx, SYSCTL_CHILDREN(tree), OID_AUTO,
            "txantenna", CTLTYPE_INT | CTLFLAG_RW | CTLFLAG_NEEDGIANT, sc, 0,
            ath_sysctl_txantenna, "I", "antenna switch");
        SYSCTL_ADD_PROC(ctx, SYSCTL_CHILDREN(tree), OID_AUTO,
            "rxantenna", CTLTYPE_INT | CTLFLAG_RW | CTLFLAG_NEEDGIANT, sc, 0,
            ath_sysctl_rxantenna, "I", "default/rx antenna");
        if (ath_hal_hasdiversity(ah))
                SYSCTL_ADD_PROC(ctx, SYSCTL_CHILDREN(tree), OID_AUTO,
                    "diversity", CTLTYPE_INT | CTLFLAG_RW | CTLFLAG_NEEDGIANT,
                    sc, 0, ath_sysctl_diversity, "I", "antenna diversity");
        sc->sc_txintrperiod = ATH_TXINTR_PERIOD;
        SYSCTL_ADD_UINT(ctx, SYSCTL_CHILDREN(tree), OID_AUTO,
                "txintrperiod", CTLFLAG_RW, &sc->sc_txintrperiod, 0,
                "tx descriptor batching");
        SYSCTL_ADD_PROC(ctx, SYSCTL_CHILDREN(tree), OID_AUTO,
            "diag", CTLTYPE_INT | CTLFLAG_RW | CTLFLAG_NEEDGIANT, sc, 0,
            ath_sysctl_diag, "I", "h/w diagnostic control");
        SYSCTL_ADD_PROC(ctx, SYSCTL_CHILDREN(tree), OID_AUTO,
            "tpscale", CTLTYPE_INT | CTLFLAG_RW | CTLFLAG_NEEDGIANT, sc, 0,
            ath_sysctl_tpscale, "I", "tx power scaling");
        if (ath_hal_hastpc(ah)) {
                SYSCTL_ADD_PROC(ctx, SYSCTL_CHILDREN(tree), OID_AUTO,
                    "tpc", CTLTYPE_INT | CTLFLAG_RW | CTLFLAG_NEEDGIANT, sc, 0,
                    ath_sysctl_tpc, "I", "enable/disable per-packet TPC");
                SYSCTL_ADD_PROC(ctx, SYSCTL_CHILDREN(tree), OID_AUTO,
                    "tpack", CTLTYPE_INT | CTLFLAG_RW | CTLFLAG_NEEDGIANT, sc,
                    0, ath_sysctl_tpack, "I", "tx power for ack frames");
                SYSCTL_ADD_PROC(ctx, SYSCTL_CHILDREN(tree), OID_AUTO,
                    "tpcts", CTLTYPE_INT | CTLFLAG_RW | CTLFLAG_NEEDGIANT, sc,
                    0, ath_sysctl_tpcts, "I", "tx power for cts frames");
        }
        if (ath_hal_hasrfsilent(ah)) {
                SYSCTL_ADD_PROC(ctx, SYSCTL_CHILDREN(tree), OID_AUTO,
                    "rfsilent", CTLTYPE_INT | CTLFLAG_RW | CTLFLAG_NEEDGIANT,
                    sc, 0, ath_sysctl_rfsilent, "I", "h/w RF silent config");
                SYSCTL_ADD_PROC(ctx, SYSCTL_CHILDREN(tree), OID_AUTO,
                    "rfkill", CTLTYPE_INT | CTLFLAG_RW | CTLFLAG_NEEDGIANT, sc,
                    0, ath_sysctl_rfkill, "I", "enable/disable RF kill switch");
        }

        SYSCTL_ADD_PROC(ctx, SYSCTL_CHILDREN(tree), OID_AUTO,
            "txagg", CTLTYPE_INT | CTLFLAG_RW | CTLFLAG_NEEDGIANT, sc, 0,
            ath_sysctl_txagg, "I", "");

        SYSCTL_ADD_PROC(ctx, SYSCTL_CHILDREN(tree), OID_AUTO,
            "forcebstuck", CTLTYPE_INT | CTLFLAG_RW | CTLFLAG_NEEDGIANT, sc,
            0, ath_sysctl_forcebstuck, "I", "");

        SYSCTL_ADD_PROC(ctx, SYSCTL_CHILDREN(tree), OID_AUTO,
            "hangcheck", CTLTYPE_INT | CTLFLAG_RW | CTLFLAG_NEEDGIANT, sc, 0,
            ath_sysctl_hangcheck, "I", "");

        if (ath_hal_hasintmit(ah)) {
                SYSCTL_ADD_PROC(ctx, SYSCTL_CHILDREN(tree), OID_AUTO,
                    "intmit", CTLTYPE_INT | CTLFLAG_RW | CTLFLAG_NEEDGIANT, sc,
                    0, ath_sysctl_intmit, "I", "interference mitigation");
        }
        sc->sc_monpass = HAL_RXERR_DECRYPT | HAL_RXERR_MIC;
        SYSCTL_ADD_UINT(ctx, SYSCTL_CHILDREN(tree), OID_AUTO,
                "monpass", CTLFLAG_RW, &sc->sc_monpass, 0,
                "mask of error frames to pass when monitoring");

        SYSCTL_ADD_INT(ctx, SYSCTL_CHILDREN(tree), OID_AUTO,
                "hwq_limit_nonaggr", CTLFLAG_RW, &sc->sc_hwq_limit_nonaggr, 0,
                "Hardware non-AMPDU queue depth before software-queuing TX frames");
        SYSCTL_ADD_INT(ctx, SYSCTL_CHILDREN(tree), OID_AUTO,
                "hwq_limit_aggr", CTLFLAG_RW, &sc->sc_hwq_limit_aggr, 0,
                "Hardware AMPDU queue depth before software-queuing TX frames");
        SYSCTL_ADD_INT(ctx, SYSCTL_CHILDREN(tree), OID_AUTO,
                "tid_hwq_lo", CTLFLAG_RW, &sc->sc_tid_hwq_lo, 0,
                "");
        SYSCTL_ADD_INT(ctx, SYSCTL_CHILDREN(tree), OID_AUTO,
                "tid_hwq_hi", CTLFLAG_RW, &sc->sc_tid_hwq_hi, 0,
                "");

        /* Aggregate length twiddles */
        SYSCTL_ADD_INT(ctx, SYSCTL_CHILDREN(tree), OID_AUTO,
                "aggr_limit", CTLFLAG_RW, &sc->sc_aggr_limit, 0,
                "Maximum A-MPDU size, or 0 for 'default'");
        SYSCTL_ADD_INT(ctx, SYSCTL_CHILDREN(tree), OID_AUTO,
                "rts_aggr_limit", CTLFLAG_RW, &sc->sc_rts_aggr_limit, 0,
                "Maximum A-MPDU size for RTS-protected frames, or '0' "
                "for default");
        SYSCTL_ADD_INT(ctx, SYSCTL_CHILDREN(tree), OID_AUTO,
                "delim_min_pad", CTLFLAG_RW, &sc->sc_delim_min_pad, 0,
                "Enforce a minimum number of delimiters per A-MPDU "
                " sub-frame");

        SYSCTL_ADD_INT(ctx, SYSCTL_CHILDREN(tree), OID_AUTO,
                "txq_data_minfree", CTLFLAG_RW, &sc->sc_txq_data_minfree,
                0, "Minimum free buffers before adding a data frame"
                " to the TX queue");
        SYSCTL_ADD_INT(ctx, SYSCTL_CHILDREN(tree), OID_AUTO,
                "txq_mcastq_maxdepth", CTLFLAG_RW,
                &sc->sc_txq_mcastq_maxdepth, 0,
                "Maximum buffer depth for multicast/broadcast frames");
        SYSCTL_ADD_INT(ctx, SYSCTL_CHILDREN(tree), OID_AUTO,
                "txq_node_maxdepth", CTLFLAG_RW,
                &sc->sc_txq_node_maxdepth, 0,
                "Maximum buffer depth for a single node");

#if 0
        SYSCTL_ADD_INT(ctx, SYSCTL_CHILDREN(tree), OID_AUTO,
                "cabq_enable", CTLFLAG_RW,
                &sc->sc_cabq_enable, 0,
                "Whether to transmit on the CABQ or not");
#endif

#ifdef IEEE80211_SUPPORT_TDMA
        if (ath_hal_macversion(ah) > 0x78) {
                sc->sc_tdmadbaprep = 2;
                SYSCTL_ADD_UINT(ctx, SYSCTL_CHILDREN(tree), OID_AUTO,
                        "dbaprep", CTLFLAG_RW, &sc->sc_tdmadbaprep, 0,
                        "TDMA DBA preparation time");
                sc->sc_tdmaswbaprep = 10;
                SYSCTL_ADD_UINT(ctx, SYSCTL_CHILDREN(tree), OID_AUTO,
                        "swbaprep", CTLFLAG_RW, &sc->sc_tdmaswbaprep, 0,
                        "TDMA SWBA preparation time");
                SYSCTL_ADD_UINT(ctx, SYSCTL_CHILDREN(tree), OID_AUTO,
                        "guardtime", CTLFLAG_RW, &sc->sc_tdmaguard, 0,
                        "TDMA slot guard time");
                SYSCTL_ADD_UINT(ctx, SYSCTL_CHILDREN(tree), OID_AUTO,
                        "superframe", CTLFLAG_RD, &sc->sc_tdmabintval, 0,
                        "TDMA calculated super frame");
                SYSCTL_ADD_PROC(ctx, SYSCTL_CHILDREN(tree), OID_AUTO,
                    "setcca", CTLTYPE_INT | CTLFLAG_RW | CTLFLAG_NEEDGIANT,
                    sc, 0, ath_sysctl_setcca, "I", "enable CCA control");
        }
#endif

#ifdef  ATH_DEBUG_ALQ
        ath_sysctl_alq_attach(sc);
#endif
}

static int
ath_sysctl_clearstats(SYSCTL_HANDLER_ARGS)
{
        struct ath_softc *sc = arg1;
        int val = 0;
        int error;

        error = sysctl_handle_int(oidp, &val, 0, req);
        if (error || !req->newptr)
                return error;
        if (val == 0)
                return 0;       /* Not clearing the stats is still valid */
        memset(&sc->sc_stats, 0, sizeof(sc->sc_stats));
        memset(&sc->sc_aggr_stats, 0, sizeof(sc->sc_aggr_stats));
        memset(&sc->sc_intr_stats, 0, sizeof(sc->sc_intr_stats));

        val = 0;
        return 0;
}

static void
ath_sysctl_stats_attach_rxphyerr(struct ath_softc *sc, struct sysctl_oid_list *parent)
{
        struct sysctl_ctx_list *ctx = device_get_sysctl_ctx(sc->sc_dev);
        struct sysctl_oid *tree = device_get_sysctl_tree(sc->sc_dev);
        struct sysctl_oid_list *child = SYSCTL_CHILDREN(tree);
        int i;
        char sn[8];

        tree = SYSCTL_ADD_NODE(ctx, parent, OID_AUTO, "rx_phy_err",
            CTLFLAG_RD | CTLFLAG_MPSAFE, NULL, "Per-code RX PHY Errors");
        child = SYSCTL_CHILDREN(tree);
        for (i = 0; i < 64; i++) {
                snprintf(sn, sizeof(sn), "%d", i);
                SYSCTL_ADD_UINT(ctx, child, OID_AUTO, sn, CTLFLAG_RD, &sc->sc_stats.ast_rx_phy[i], 0, "");
        }
}

static void
ath_sysctl_stats_attach_intr(struct ath_softc *sc,
    struct sysctl_oid_list *parent)
{
        struct sysctl_ctx_list *ctx = device_get_sysctl_ctx(sc->sc_dev);
        struct sysctl_oid *tree = device_get_sysctl_tree(sc->sc_dev);
        struct sysctl_oid_list *child = SYSCTL_CHILDREN(tree);
        int i;
        char sn[8];

        tree = SYSCTL_ADD_NODE(ctx, parent, OID_AUTO, "sync_intr",
            CTLFLAG_RD | CTLFLAG_MPSAFE, NULL, "Sync interrupt statistics");
        child = SYSCTL_CHILDREN(tree);
        for (i = 0; i < 32; i++) {
                snprintf(sn, sizeof(sn), "%d", i);
                SYSCTL_ADD_UINT(ctx, child, OID_AUTO, sn, CTLFLAG_RD,
                    &sc->sc_intr_stats.sync_intr[i], 0, "");
        }
}

void
ath_sysctl_stats_attach(struct ath_softc *sc)
{
        struct sysctl_oid *tree = device_get_sysctl_tree(sc->sc_dev);
        struct sysctl_ctx_list *ctx = device_get_sysctl_ctx(sc->sc_dev);
        struct sysctl_oid_list *child = SYSCTL_CHILDREN(tree);

        /* Create "clear" node */
        SYSCTL_ADD_PROC(ctx, SYSCTL_CHILDREN(tree), OID_AUTO,
            "clear_stats", CTLTYPE_INT | CTLFLAG_RW | CTLFLAG_NEEDGIANT, sc,
            0, ath_sysctl_clearstats, "I", "clear stats");

        /* Create stats node */
        tree = SYSCTL_ADD_NODE(ctx, child, OID_AUTO, "stats",
            CTLFLAG_RD | CTLFLAG_MPSAFE, NULL, "Statistics");
        child = SYSCTL_CHILDREN(tree);

        /* This was generated from if_athioctl.h */

        SYSCTL_ADD_UINT(ctx, child, OID_AUTO, "ast_watchdog", CTLFLAG_RD,
            &sc->sc_stats.ast_watchdog, 0, "device reset by watchdog");
        SYSCTL_ADD_UINT(ctx, child, OID_AUTO, "ast_hardware", CTLFLAG_RD,
            &sc->sc_stats.ast_hardware, 0, "fatal hardware error interrupts");
        SYSCTL_ADD_UINT(ctx, child, OID_AUTO, "ast_bmiss", CTLFLAG_RD,
            &sc->sc_stats.ast_bmiss, 0, "beacon miss interrupts");
        SYSCTL_ADD_UINT(ctx, child, OID_AUTO, "ast_bmiss_phantom", CTLFLAG_RD,
            &sc->sc_stats.ast_bmiss_phantom, 0, "beacon miss interrupts");
        SYSCTL_ADD_UINT(ctx, child, OID_AUTO, "ast_bstuck", CTLFLAG_RD,
            &sc->sc_stats.ast_bstuck, 0, "beacon stuck interrupts");
        SYSCTL_ADD_UINT(ctx, child, OID_AUTO, "ast_rxorn", CTLFLAG_RD,
            &sc->sc_stats.ast_rxorn, 0, "rx overrun interrupts");
        SYSCTL_ADD_UINT(ctx, child, OID_AUTO, "ast_rxeol", CTLFLAG_RD,
            &sc->sc_stats.ast_rxeol, 0, "rx eol interrupts");
        SYSCTL_ADD_UINT(ctx, child, OID_AUTO, "ast_txurn", CTLFLAG_RD,
            &sc->sc_stats.ast_txurn, 0, "tx underrun interrupts");
        SYSCTL_ADD_UINT(ctx, child, OID_AUTO, "ast_mib", CTLFLAG_RD,
            &sc->sc_stats.ast_mib, 0, "mib interrupts");
        SYSCTL_ADD_UINT(ctx, child, OID_AUTO, "ast_intrcoal", CTLFLAG_RD,
            &sc->sc_stats.ast_intrcoal, 0, "interrupts coalesced");
        SYSCTL_ADD_UINT(ctx, child, OID_AUTO, "ast_tx_packets", CTLFLAG_RD,
            &sc->sc_stats.ast_tx_packets, 0, "packet sent on the interface");
        SYSCTL_ADD_UINT(ctx, child, OID_AUTO, "ast_tx_mgmt", CTLFLAG_RD,
            &sc->sc_stats.ast_tx_mgmt, 0, "management frames transmitted");
        SYSCTL_ADD_UINT(ctx, child, OID_AUTO, "ast_tx_discard", CTLFLAG_RD,
            &sc->sc_stats.ast_tx_discard, 0, "frames discarded prior to assoc");
        SYSCTL_ADD_UINT(ctx, child, OID_AUTO, "ast_tx_qstop", CTLFLAG_RD,
            &sc->sc_stats.ast_tx_qstop, 0, "output stopped 'cuz no buffer");
        SYSCTL_ADD_UINT(ctx, child, OID_AUTO, "ast_tx_encap", CTLFLAG_RD,
            &sc->sc_stats.ast_tx_encap, 0, "tx encapsulation failed");
        SYSCTL_ADD_UINT(ctx, child, OID_AUTO, "ast_tx_nonode", CTLFLAG_RD,
            &sc->sc_stats.ast_tx_nonode, 0, "tx failed 'cuz no node");
        SYSCTL_ADD_UINT(ctx, child, OID_AUTO, "ast_tx_nombuf", CTLFLAG_RD,
            &sc->sc_stats.ast_tx_nombuf, 0, "tx failed 'cuz no mbuf");
        SYSCTL_ADD_UINT(ctx, child, OID_AUTO, "ast_tx_nomcl", CTLFLAG_RD,
            &sc->sc_stats.ast_tx_nomcl, 0, "tx failed 'cuz no cluster");
        SYSCTL_ADD_UINT(ctx, child, OID_AUTO, "ast_tx_linear", CTLFLAG_RD,
            &sc->sc_stats.ast_tx_linear, 0, "tx linearized to cluster");
        SYSCTL_ADD_UINT(ctx, child, OID_AUTO, "ast_tx_nodata", CTLFLAG_RD,
            &sc->sc_stats.ast_tx_nodata, 0, "tx discarded empty frame");
        SYSCTL_ADD_UINT(ctx, child, OID_AUTO, "ast_tx_busdma", CTLFLAG_RD,
            &sc->sc_stats.ast_tx_busdma, 0, "tx failed for dma resrcs");
        SYSCTL_ADD_UINT(ctx, child, OID_AUTO, "ast_tx_xretries", CTLFLAG_RD,
            &sc->sc_stats.ast_tx_xretries, 0, "tx failed 'cuz too many retries");
        SYSCTL_ADD_UINT(ctx, child, OID_AUTO, "ast_tx_fifoerr", CTLFLAG_RD,
            &sc->sc_stats.ast_tx_fifoerr, 0, "tx failed 'cuz FIFO underrun");
        SYSCTL_ADD_UINT(ctx, child, OID_AUTO, "ast_tx_filtered", CTLFLAG_RD,
            &sc->sc_stats.ast_tx_filtered, 0, "tx failed 'cuz xmit filtered");
        SYSCTL_ADD_UINT(ctx, child, OID_AUTO, "ast_tx_shortretry", CTLFLAG_RD,
            &sc->sc_stats.ast_tx_shortretry, 0, "tx on-chip retries (short)");
        SYSCTL_ADD_UINT(ctx, child, OID_AUTO, "ast_tx_longretry", CTLFLAG_RD,
            &sc->sc_stats.ast_tx_longretry, 0, "tx on-chip retries (long)");
        SYSCTL_ADD_UINT(ctx, child, OID_AUTO, "ast_tx_badrate", CTLFLAG_RD,
            &sc->sc_stats.ast_tx_badrate, 0, "tx failed 'cuz bogus xmit rate");
        SYSCTL_ADD_UINT(ctx, child, OID_AUTO, "ast_tx_noack", CTLFLAG_RD,
            &sc->sc_stats.ast_tx_noack, 0, "tx frames with no ack marked");
        SYSCTL_ADD_UINT(ctx, child, OID_AUTO, "ast_tx_rts", CTLFLAG_RD,
            &sc->sc_stats.ast_tx_rts, 0, "tx frames with rts enabled");
        SYSCTL_ADD_UINT(ctx, child, OID_AUTO, "ast_tx_cts", CTLFLAG_RD,
            &sc->sc_stats.ast_tx_cts, 0, "tx frames with cts enabled");
        SYSCTL_ADD_UINT(ctx, child, OID_AUTO, "ast_tx_shortpre", CTLFLAG_RD,
            &sc->sc_stats.ast_tx_shortpre, 0, "tx frames with short preamble");
        SYSCTL_ADD_UINT(ctx, child, OID_AUTO, "ast_tx_altrate", CTLFLAG_RD,
            &sc->sc_stats.ast_tx_altrate, 0, "tx frames with alternate rate");
        SYSCTL_ADD_UINT(ctx, child, OID_AUTO, "ast_tx_protect", CTLFLAG_RD,
            &sc->sc_stats.ast_tx_protect, 0, "tx frames with protection");
        SYSCTL_ADD_UINT(ctx, child, OID_AUTO, "ast_tx_ctsburst", CTLFLAG_RD,
            &sc->sc_stats.ast_tx_ctsburst, 0, "tx frames with cts and bursting");
        SYSCTL_ADD_UINT(ctx, child, OID_AUTO, "ast_tx_ctsext", CTLFLAG_RD,
            &sc->sc_stats.ast_tx_ctsext, 0, "tx frames with cts extension");
        SYSCTL_ADD_UINT(ctx, child, OID_AUTO, "ast_rx_nombuf", CTLFLAG_RD,
            &sc->sc_stats.ast_rx_nombuf, 0, "rx setup failed 'cuz no mbuf");
        SYSCTL_ADD_UINT(ctx, child, OID_AUTO, "ast_rx_busdma", CTLFLAG_RD,
            &sc->sc_stats.ast_rx_busdma, 0, "rx setup failed for dma resrcs");
        SYSCTL_ADD_UINT(ctx, child, OID_AUTO, "ast_rx_orn", CTLFLAG_RD,
            &sc->sc_stats.ast_rx_orn, 0, "rx failed 'cuz of desc overrun");
        SYSCTL_ADD_UINT(ctx, child, OID_AUTO, "ast_rx_crcerr", CTLFLAG_RD,
            &sc->sc_stats.ast_rx_crcerr, 0, "rx failed 'cuz of bad CRC");
        SYSCTL_ADD_UINT(ctx, child, OID_AUTO, "ast_rx_fifoerr", CTLFLAG_RD,
            &sc->sc_stats.ast_rx_fifoerr, 0, "rx failed 'cuz of FIFO overrun");
        SYSCTL_ADD_UINT(ctx, child, OID_AUTO, "ast_rx_badcrypt", CTLFLAG_RD,
            &sc->sc_stats.ast_rx_badcrypt, 0, "rx failed 'cuz decryption");
        SYSCTL_ADD_UINT(ctx, child, OID_AUTO, "ast_rx_badmic", CTLFLAG_RD,
            &sc->sc_stats.ast_rx_badmic, 0, "rx failed 'cuz MIC failure");
        SYSCTL_ADD_UINT(ctx, child, OID_AUTO, "ast_rx_phyerr", CTLFLAG_RD,
            &sc->sc_stats.ast_rx_phyerr, 0, "rx failed 'cuz of PHY err");
        SYSCTL_ADD_UINT(ctx, child, OID_AUTO, "ast_rx_tooshort", CTLFLAG_RD,
            &sc->sc_stats.ast_rx_tooshort, 0, "rx discarded 'cuz frame too short");
        SYSCTL_ADD_UINT(ctx, child, OID_AUTO, "ast_rx_toobig", CTLFLAG_RD,
            &sc->sc_stats.ast_rx_toobig, 0, "rx discarded 'cuz frame too large");
        SYSCTL_ADD_UINT(ctx, child, OID_AUTO, "ast_rx_packets", CTLFLAG_RD,
            &sc->sc_stats.ast_rx_packets, 0, "packet recv on the interface");
        SYSCTL_ADD_UINT(ctx, child, OID_AUTO, "ast_rx_mgt", CTLFLAG_RD,
            &sc->sc_stats.ast_rx_mgt, 0, "management frames received");
        SYSCTL_ADD_UINT(ctx, child, OID_AUTO, "ast_rx_ctl", CTLFLAG_RD,
            &sc->sc_stats.ast_rx_ctl, 0, "rx discarded 'cuz ctl frame");
        SYSCTL_ADD_UINT(ctx, child, OID_AUTO, "ast_be_xmit", CTLFLAG_RD,
            &sc->sc_stats.ast_be_xmit, 0, "beacons transmitted");
        SYSCTL_ADD_UINT(ctx, child, OID_AUTO, "ast_be_nombuf", CTLFLAG_RD,
            &sc->sc_stats.ast_be_nombuf, 0, "beacon setup failed 'cuz no mbuf");
        SYSCTL_ADD_UINT(ctx, child, OID_AUTO, "ast_per_cal", CTLFLAG_RD,
            &sc->sc_stats.ast_per_cal, 0, "periodic calibration calls");
        SYSCTL_ADD_UINT(ctx, child, OID_AUTO, "ast_per_calfail", CTLFLAG_RD,
            &sc->sc_stats.ast_per_calfail, 0, "periodic calibration failed");
        SYSCTL_ADD_UINT(ctx, child, OID_AUTO, "ast_per_rfgain", CTLFLAG_RD,
            &sc->sc_stats.ast_per_rfgain, 0, "periodic calibration rfgain reset");
        SYSCTL_ADD_UINT(ctx, child, OID_AUTO, "ast_rate_calls", CTLFLAG_RD,
            &sc->sc_stats.ast_rate_calls, 0, "rate control checks");
        SYSCTL_ADD_UINT(ctx, child, OID_AUTO, "ast_rate_raise", CTLFLAG_RD,
            &sc->sc_stats.ast_rate_raise, 0, "rate control raised xmit rate");
        SYSCTL_ADD_UINT(ctx, child, OID_AUTO, "ast_rate_drop", CTLFLAG_RD,
            &sc->sc_stats.ast_rate_drop, 0, "rate control dropped xmit rate");
        SYSCTL_ADD_UINT(ctx, child, OID_AUTO, "ast_ant_defswitch", CTLFLAG_RD,
            &sc->sc_stats.ast_ant_defswitch, 0, "rx/default antenna switches");
        SYSCTL_ADD_UINT(ctx, child, OID_AUTO, "ast_ant_txswitch", CTLFLAG_RD,
            &sc->sc_stats.ast_ant_txswitch, 0, "tx antenna switches");
        SYSCTL_ADD_UINT(ctx, child, OID_AUTO, "ast_cabq_xmit", CTLFLAG_RD,
            &sc->sc_stats.ast_cabq_xmit, 0, "cabq frames transmitted");
        SYSCTL_ADD_UINT(ctx, child, OID_AUTO, "ast_cabq_busy", CTLFLAG_RD,
            &sc->sc_stats.ast_cabq_busy, 0, "cabq found busy");
        SYSCTL_ADD_UINT(ctx, child, OID_AUTO, "ast_tx_raw", CTLFLAG_RD,
            &sc->sc_stats.ast_tx_raw, 0, "tx frames through raw api");
        SYSCTL_ADD_UINT(ctx, child, OID_AUTO, "ast_ff_txok", CTLFLAG_RD,
            &sc->sc_stats.ast_ff_txok, 0, "fast frames tx'd successfully");
        SYSCTL_ADD_UINT(ctx, child, OID_AUTO, "ast_ff_txerr", CTLFLAG_RD,
            &sc->sc_stats.ast_ff_txerr, 0, "fast frames tx'd w/ error");
        SYSCTL_ADD_UINT(ctx, child, OID_AUTO, "ast_ff_rx", CTLFLAG_RD,
            &sc->sc_stats.ast_ff_rx, 0, "fast frames rx'd");
        SYSCTL_ADD_UINT(ctx, child, OID_AUTO, "ast_ff_flush", CTLFLAG_RD,
            &sc->sc_stats.ast_ff_flush, 0, "fast frames flushed from staging q");
        SYSCTL_ADD_UINT(ctx, child, OID_AUTO, "ast_tx_qfull", CTLFLAG_RD,
            &sc->sc_stats.ast_tx_qfull, 0, "tx dropped 'cuz of queue limit");
        SYSCTL_ADD_UINT(ctx, child, OID_AUTO, "ast_tx_nobuf", CTLFLAG_RD,
            &sc->sc_stats.ast_tx_nobuf, 0, "tx dropped 'cuz no ath buffer");
        SYSCTL_ADD_UINT(ctx, child, OID_AUTO, "ast_tdma_update", CTLFLAG_RD,
            &sc->sc_stats.ast_tdma_update, 0, "TDMA slot timing updates");
        SYSCTL_ADD_UINT(ctx, child, OID_AUTO, "ast_tdma_timers", CTLFLAG_RD,
            &sc->sc_stats.ast_tdma_timers, 0, "TDMA slot update set beacon timers");
        SYSCTL_ADD_UINT(ctx, child, OID_AUTO, "ast_tdma_tsf", CTLFLAG_RD,
            &sc->sc_stats.ast_tdma_tsf, 0, "TDMA slot update set TSF");
        SYSCTL_ADD_UINT(ctx, child, OID_AUTO, "ast_tdma_ack", CTLFLAG_RD,
            &sc->sc_stats.ast_tdma_ack, 0, "TDMA tx failed 'cuz ACK required");
        SYSCTL_ADD_UINT(ctx, child, OID_AUTO, "ast_tx_raw_fail", CTLFLAG_RD,
            &sc->sc_stats.ast_tx_raw_fail, 0, "raw tx failed 'cuz h/w down");
        SYSCTL_ADD_UINT(ctx, child, OID_AUTO, "ast_tx_nofrag", CTLFLAG_RD,
            &sc->sc_stats.ast_tx_nofrag, 0, "tx dropped 'cuz no ath frag buffer");
        SYSCTL_ADD_UINT(ctx, child, OID_AUTO, "ast_be_missed", CTLFLAG_RD,
            &sc->sc_stats.ast_be_missed, 0, "number of -missed- beacons");
        SYSCTL_ADD_UINT(ctx, child, OID_AUTO, "ast_ani_cal", CTLFLAG_RD,
            &sc->sc_stats.ast_ani_cal, 0, "number of ANI polls");
        SYSCTL_ADD_UINT(ctx, child, OID_AUTO, "ast_rx_agg", CTLFLAG_RD,
            &sc->sc_stats.ast_rx_agg, 0, "number of aggregate frames received");

        SYSCTL_ADD_UINT(ctx, child, OID_AUTO, "ast_rx_halfgi", CTLFLAG_RD,
            &sc->sc_stats.ast_rx_halfgi, 0, "number of frames received with half-GI");
        SYSCTL_ADD_UINT(ctx, child, OID_AUTO, "ast_rx_2040", CTLFLAG_RD,
            &sc->sc_stats.ast_rx_2040, 0, "number of HT/40 frames received");
        SYSCTL_ADD_UINT(ctx, child, OID_AUTO, "ast_rx_pre_crc_err", CTLFLAG_RD,
            &sc->sc_stats.ast_rx_pre_crc_err, 0, "number of delimiter-CRC errors detected");
        SYSCTL_ADD_UINT(ctx, child, OID_AUTO, "ast_rx_post_crc_err", CTLFLAG_RD,
            &sc->sc_stats.ast_rx_post_crc_err, 0, "number of post-delimiter CRC errors detected");
        SYSCTL_ADD_UINT(ctx, child, OID_AUTO, "ast_rx_decrypt_busy_err", CTLFLAG_RD,
            &sc->sc_stats.ast_rx_decrypt_busy_err, 0, "number of frames received w/ busy decrypt engine");
        SYSCTL_ADD_UINT(ctx, child, OID_AUTO, "ast_rx_hi_rx_chain", CTLFLAG_RD,
            &sc->sc_stats.ast_rx_hi_rx_chain, 0, "");
        SYSCTL_ADD_UINT(ctx, child, OID_AUTO, "ast_tx_htprotect", CTLFLAG_RD,
            &sc->sc_stats.ast_tx_htprotect, 0, "HT tx frames with protection");
        SYSCTL_ADD_UINT(ctx, child, OID_AUTO, "ast_rx_hitqueueend", CTLFLAG_RD,
            &sc->sc_stats.ast_rx_hitqueueend, 0, "RX hit queue end");
        SYSCTL_ADD_UINT(ctx, child, OID_AUTO, "ast_tx_timeout", CTLFLAG_RD,
            &sc->sc_stats.ast_tx_timeout, 0, "TX Global Timeout");
        SYSCTL_ADD_UINT(ctx, child, OID_AUTO, "ast_tx_cst", CTLFLAG_RD,
            &sc->sc_stats.ast_tx_cst, 0, "TX Carrier Sense Timeout");
        SYSCTL_ADD_UINT(ctx, child, OID_AUTO, "ast_tx_xtxop", CTLFLAG_RD,
            &sc->sc_stats.ast_tx_xtxop, 0, "TX exceeded TXOP");
        SYSCTL_ADD_UINT(ctx, child, OID_AUTO, "ast_tx_timerexpired", CTLFLAG_RD,
            &sc->sc_stats.ast_tx_timerexpired, 0, "TX exceeded TX_TIMER register");
        SYSCTL_ADD_UINT(ctx, child, OID_AUTO, "ast_tx_desccfgerr", CTLFLAG_RD,
            &sc->sc_stats.ast_tx_desccfgerr, 0, "TX Descriptor Cfg Error");
        SYSCTL_ADD_UINT(ctx, child, OID_AUTO, "ast_tx_swretries", CTLFLAG_RD,
            &sc->sc_stats.ast_tx_swretries, 0, "TX software retry count");
        SYSCTL_ADD_UINT(ctx, child, OID_AUTO, "ast_tx_swretrymax", CTLFLAG_RD,
            &sc->sc_stats.ast_tx_swretrymax, 0, "TX software retry max reached");

        SYSCTL_ADD_UINT(ctx, child, OID_AUTO, "ast_tx_data_underrun", CTLFLAG_RD,
            &sc->sc_stats.ast_tx_data_underrun, 0, "");
        SYSCTL_ADD_UINT(ctx, child, OID_AUTO, "ast_tx_delim_underrun", CTLFLAG_RD,
            &sc->sc_stats.ast_tx_delim_underrun, 0, "");
        SYSCTL_ADD_UINT(ctx, child, OID_AUTO, "ast_tx_aggr_failall", CTLFLAG_RD,
            &sc->sc_stats.ast_tx_aggr_failall, 0,
            "Number of aggregate TX failures (whole frame)");
        SYSCTL_ADD_UINT(ctx, child, OID_AUTO, "ast_tx_aggr_ok", CTLFLAG_RD,
            &sc->sc_stats.ast_tx_aggr_ok, 0,
            "Number of aggregate TX OK completions (subframe)");
        SYSCTL_ADD_UINT(ctx, child, OID_AUTO, "ast_tx_aggr_fail", CTLFLAG_RD,
            &sc->sc_stats.ast_tx_aggr_fail, 0,
            "Number of aggregate TX failures (subframe)");

        SYSCTL_ADD_UINT(ctx, child, OID_AUTO, "ast_rx_intr", CTLFLAG_RD,
            &sc->sc_stats.ast_rx_intr, 0, "RX interrupts");
        SYSCTL_ADD_UINT(ctx, child, OID_AUTO, "ast_tx_intr", CTLFLAG_RD,
            &sc->sc_stats.ast_tx_intr, 0, "TX interrupts");
        SYSCTL_ADD_UINT(ctx, child, OID_AUTO, "ast_tx_mcastq_overflow",
            CTLFLAG_RD, &sc->sc_stats.ast_tx_mcastq_overflow, 0,
            "Number of multicast frames exceeding maximum mcast queue depth");
        SYSCTL_ADD_UINT(ctx, child, OID_AUTO, "ast_rx_keymiss", CTLFLAG_RD,
            &sc->sc_stats.ast_rx_keymiss, 0, "");
        SYSCTL_ADD_UINT(ctx, child, OID_AUTO, "ast_tx_swfiltered", CTLFLAG_RD,
            &sc->sc_stats.ast_tx_swfiltered, 0, "");
        SYSCTL_ADD_UINT(ctx, child, OID_AUTO, "ast_tx_nodeq_overflow",
            CTLFLAG_RD, &sc->sc_stats.ast_tx_nodeq_overflow, 0,
            "tx dropped 'cuz nodeq overflow");
        SYSCTL_ADD_UINT(ctx, child, OID_AUTO, "ast_rx_stbc",
            CTLFLAG_RD, &sc->sc_stats.ast_rx_stbc, 0,
            "Number of STBC frames received");
        SYSCTL_ADD_UINT(ctx, child, OID_AUTO, "ast_tx_stbc",
            CTLFLAG_RD, &sc->sc_stats.ast_tx_stbc, 0,
            "Number of STBC frames transmitted");
        SYSCTL_ADD_UINT(ctx, child, OID_AUTO, "ast_tx_ldpc",
            CTLFLAG_RD, &sc->sc_stats.ast_tx_ldpc, 0,
            "Number of LDPC frames transmitted");

        SYSCTL_ADD_UINT(ctx, child, OID_AUTO, "ast_tsfoor",
            CTLFLAG_RD, &sc->sc_stats.ast_tsfoor, 0,
            "Number of TSF out of range interrupts/resets");

        /* Attach the RX phy error array */
        ath_sysctl_stats_attach_rxphyerr(sc, child);

        /* Attach the interrupt statistics array */
        ath_sysctl_stats_attach_intr(sc, child);
}

/*
 * This doesn't necessarily belong here (because it's HAL related, not
 * driver related).
 */
void
ath_sysctl_hal_attach(struct ath_softc *sc)
{
        struct sysctl_oid *tree = device_get_sysctl_tree(sc->sc_dev);
        struct sysctl_ctx_list *ctx = device_get_sysctl_ctx(sc->sc_dev);
        struct sysctl_oid_list *child = SYSCTL_CHILDREN(tree);

        tree = SYSCTL_ADD_NODE(ctx, child, OID_AUTO, "hal",
            CTLFLAG_RD | CTLFLAG_MPSAFE, NULL, "Atheros HAL parameters");
        child = SYSCTL_CHILDREN(tree);

        sc->sc_ah->ah_config.ah_debug = 0;
        SYSCTL_ADD_INT(ctx, child, OID_AUTO, "debug", CTLFLAG_RW,
            &sc->sc_ah->ah_config.ah_debug, 0, "Atheros HAL debugging printfs");

        sc->sc_ah->ah_config.ah_ar5416_biasadj = 0;
        SYSCTL_ADD_INT(ctx, child, OID_AUTO, "ar5416_biasadj", CTLFLAG_RW,
            &sc->sc_ah->ah_config.ah_ar5416_biasadj, 0,
            "Enable 2GHz AR5416 direction sensitivity bias adjust");

        sc->sc_ah->ah_config.ah_dma_beacon_response_time = 2;
        SYSCTL_ADD_INT(ctx, child, OID_AUTO, "dma_brt", CTLFLAG_RW,
            &sc->sc_ah->ah_config.ah_dma_beacon_response_time, 0,
            "Atheros HAL DMA beacon response time");

        sc->sc_ah->ah_config.ah_sw_beacon_response_time = 10;
        SYSCTL_ADD_INT(ctx, child, OID_AUTO, "sw_brt", CTLFLAG_RW,
            &sc->sc_ah->ah_config.ah_sw_beacon_response_time, 0,
            "Atheros HAL software beacon response time");

        sc->sc_ah->ah_config.ah_additional_swba_backoff = 0;
        SYSCTL_ADD_INT(ctx, child, OID_AUTO, "swba_backoff", CTLFLAG_RW,
            &sc->sc_ah->ah_config.ah_additional_swba_backoff, 0,
            "Atheros HAL additional SWBA backoff time");

        sc->sc_ah->ah_config.ah_force_full_reset = 0;
        SYSCTL_ADD_INT(ctx, child, OID_AUTO, "force_full_reset", CTLFLAG_RW,
            &sc->sc_ah->ah_config.ah_force_full_reset, 0,
            "Force full chip reset rather than a warm reset");

        /*
         * This is initialised by the driver.
         */
        SYSCTL_ADD_INT(ctx, child, OID_AUTO, "serialise_reg_war", CTLFLAG_RW,
            &sc->sc_ah->ah_config.ah_serialise_reg_war, 0,
            "Force register access serialisation");
}