/*-
 * Copyright (c) 2012 Adrian Chadd <adrian@FreeBSD.org>
 * 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>
__FBSDID("$FreeBSD$");

/*
 * 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"
/*
 * This is needed for register operations which are performed
 * by the driver - eg, calls to ath_hal_gettsf32().
 *
 * It's also required for any AH_DEBUG checks in here, eg the
 * module dependencies.
 */
#include "opt_ah.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 <sys/module.h>
#include <sys/ktr.h>
#include <sys/smp.h>	/* for mp_ncpus */

#include <machine/bus.h>

#include <net/if.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_misc.h>
#include <dev/ath/if_ath_tsf.h>
#include <dev/ath/if_ath_tx.h>
#include <dev/ath/if_ath_sysctl.h>
#include <dev/ath/if_ath_led.h>
#include <dev/ath/if_ath_keycache.h>
#include <dev/ath/if_ath_rx.h>
#include <dev/ath/if_ath_beacon.h>
#include <dev/ath/if_athdfs.h>

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

#include <dev/ath/if_ath_rx_edma.h>

static void
ath_edma_stoprecv(struct ath_softc *sc, int dodelay)
{
	struct ath_hal *ah = sc->sc_ah;

	ath_hal_stoppcurecv(ah);
	ath_hal_setrxfilter(ah, 0);
	ath_hal_stopdmarecv(ah);

	DELAY(3000);

	if (sc->sc_rxpending != NULL) {
		m_freem(sc->sc_rxpending);
		sc->sc_rxpending = NULL;
	}

	sc->sc_rxlink = NULL;
}

static int
ath_edma_startrecv(struct ath_softc *sc)
{
	struct ath_hal *ah = sc->sc_ah;

	sc->sc_rxlink = NULL;
	sc->sc_rxpending = NULL;

	/* XXX setup HP RX queue FIFO pointer */
	/* XXX setup LP RX queue FIFO pointer */
	/* XXX ath_hal_rxena() */
	ath_mode_init(sc);
	ath_hal_startpcurecv(ah);
	return (0);
}

static void
ath_edma_recv_flush(struct ath_softc *sc)
{

	device_printf(sc->sc_dev, "%s: called\n", __func__);
}

static void
ath_edma_recv_tasklet(void *arg, int npending)
{
	struct ath_softc *sc = (struct ath_softc *) arg;

	device_printf(sc->sc_dev, "%s: called; npending=%d\n",
	    __func__,
	    npending);
	/* XXX TODO */
}

static int
ath_edma_rxbuf_init(struct ath_softc *sc, struct ath_buf *bf)
{

	device_printf(sc->sc_dev, "%s: called; bf=%p\n", __func__, bf);
	return (EIO);
}

void
ath_recv_setup_edma(struct ath_softc *sc)
{

	device_printf(sc->sc_dev, "DMA setup: EDMA\n");

	sc->sc_rx.recv_stop = ath_edma_stoprecv;
	sc->sc_rx.recv_start = ath_edma_startrecv;
	sc->sc_rx.recv_flush = ath_edma_recv_flush;
	sc->sc_rx.recv_tasklet = ath_edma_recv_tasklet;
	sc->sc_rx.recv_rxbuf_init = ath_edma_rxbuf_init;
}