Exemple #1
0
void
vnet_stop(struct ifnet *ifp)
{
	struct vnet_softc *sc = ifp->if_softc;
	struct ldc_conn *lc = &sc->sc_lc;

	ifp->if_flags &= ~IFF_RUNNING;
	ifq_clr_oactive(&ifp->if_snd);
	ifp->if_timer = 0;

	cbus_intr_setenabled(sc->sc_bustag, sc->sc_tx_ino, INTR_DISABLED);
	cbus_intr_setenabled(sc->sc_bustag, sc->sc_rx_ino, INTR_DISABLED);

	intr_barrier(sc->sc_tx_ih);
	intr_barrier(sc->sc_rx_ih);

	hv_ldc_tx_qconf(lc->lc_id, 0, 0);
	hv_ldc_rx_qconf(lc->lc_id, 0, 0);
	lc->lc_tx_seqid = 0;
	lc->lc_state = 0;
	lc->lc_tx_state = lc->lc_rx_state = LDC_CHANNEL_DOWN;
	vnet_ldc_reset(lc);

	free(sc->sc_vsd, M_DEVBUF, VNET_NUM_SOFT_DESC * sizeof(*sc->sc_vsd));

	vnet_dring_free(sc->sc_dmatag, sc->sc_vd);

	hv_ldc_set_map_table(lc->lc_id, 0, 0);
	ldc_map_free(sc->sc_dmatag, sc->sc_lm);
}
int
vldcpopen(dev_t dev, int flag, int mode, struct proc *p)
{
	struct vldcp_softc *sc;
	struct ldc_conn *lc;
	uint64_t rx_head, rx_tail, rx_state;
	int err;

	sc = vldcp_lookup(dev);
	if (sc == NULL)
		return (ENXIO);
	lc = &sc->sc_lc;

	err = hv_ldc_tx_qconf(lc->lc_id,
	    lc->lc_txq->lq_map->dm_segs[0].ds_addr, lc->lc_txq->lq_nentries);
	if (err != H_EOK)
		printf("%s: hv_ldc_tx_qconf %d\n", __func__, err);

	err = hv_ldc_rx_qconf(lc->lc_id,
	    lc->lc_rxq->lq_map->dm_segs[0].ds_addr, lc->lc_rxq->lq_nentries);
	if (err != H_EOK)
		printf("%s: hv_ldc_rx_qconf %d\n", __func__, err);

	/* Clear a pending channel reset.  */
	err = hv_ldc_rx_get_state(lc->lc_id, &rx_head, &rx_tail, &rx_state);
	if (err != H_EOK)
		printf("%s: hv_ldc_rx_get_state %d\n", __func__, err);

	device_unref(&sc->sc_dv);
	return (0);
}
Exemple #3
0
void
ldc_reset(struct ldc_conn *lc)
{
	int err;
	vaddr_t va;
	paddr_t pa;

	DPRINTF(("Resetting connection\n"));

	mutex_enter(&lc->lc_txq->lq_mtx);

#if OPENBSD_BUSDMA
	err = hv_ldc_tx_qconf(lc->lc_id,
	    lc->lc_txq->lq_map->dm_segs[0].ds_addr, lc->lc_txq->lq_nentries);
#else
        va = lc->lc_txq->lq_va;
	pa = 0;
	if (pmap_extract(pmap_kernel(), va, &pa) == FALSE)
	  panic("pmap_extract failed %lx\n", va);
	err = hv_ldc_tx_qconf(lc->lc_id, pa, lc->lc_txq->lq_nentries);
#endif
	if (err != H_EOK)
		printf("%s: hv_ldc_tx_qconf %d\n", __func__, err);

#if OPENBSD_BUSDMA
	err = hv_ldc_rx_qconf(lc->lc_id,
	    lc->lc_rxq->lq_map->dm_segs[0].ds_addr, lc->lc_rxq->lq_nentries);
#else
        va = lc->lc_rxq->lq_va;
	pa = 0;
	if (pmap_extract(pmap_kernel(), va, &pa) == FALSE)
	  panic("pmap_extract failed %lx\n", va);
	err = hv_ldc_tx_qconf(lc->lc_id, pa, lc->lc_rxq->lq_nentries);
#endif
	if (err != H_EOK)
		printf("%s: hv_ldc_rx_qconf %d\n", __func__, err);

	lc->lc_tx_seqid = 0;
	lc->lc_state = 0;
	lc->lc_tx_state = lc->lc_rx_state = LDC_CHANNEL_DOWN;
	mutex_exit(&lc->lc_txq->lq_mtx);

	lc->lc_reset(lc);
}
Exemple #4
0
void
vnet_init(struct ifnet *ifp)
{
	struct vnet_softc *sc = ifp->if_softc;
	struct ldc_conn *lc = &sc->sc_lc;
	int err;

	sc->sc_lm = ldc_map_alloc(sc->sc_dmatag, 2048);
	if (sc->sc_lm == NULL)
		return;

	err = hv_ldc_set_map_table(lc->lc_id,
	    sc->sc_lm->lm_map->dm_segs[0].ds_addr, sc->sc_lm->lm_nentries);
	if (err != H_EOK) {
		printf("hv_ldc_set_map_table %d\n", err);
		return;
	}

	sc->sc_vd = vnet_dring_alloc(sc->sc_dmatag, VNET_NUM_SOFT_DESC);
	if (sc->sc_vd == NULL)
		return;
	sc->sc_vsd = malloc(VNET_NUM_SOFT_DESC * sizeof(*sc->sc_vsd), M_DEVBUF,
	    M_NOWAIT|M_ZERO);
	if (sc->sc_vsd == NULL)
		return;

	sc->sc_lm->lm_slot[0].entry = sc->sc_vd->vd_map->dm_segs[0].ds_addr;
	sc->sc_lm->lm_slot[0].entry &= LDC_MTE_RA_MASK;
	sc->sc_lm->lm_slot[0].entry |= LDC_MTE_CPR | LDC_MTE_CPW;
	sc->sc_lm->lm_next = 1;
	sc->sc_lm->lm_count = 1;

	err = hv_ldc_tx_qconf(lc->lc_id,
	    lc->lc_txq->lq_map->dm_segs[0].ds_addr, lc->lc_txq->lq_nentries);
	if (err != H_EOK)
		printf("hv_ldc_tx_qconf %d\n", err);

	err = hv_ldc_rx_qconf(lc->lc_id,
	    lc->lc_rxq->lq_map->dm_segs[0].ds_addr, lc->lc_rxq->lq_nentries);
	if (err != H_EOK)
		printf("hv_ldc_rx_qconf %d\n", err);

	cbus_intr_setenabled(sc->sc_bustag, sc->sc_tx_ino, INTR_ENABLED);
	cbus_intr_setenabled(sc->sc_bustag, sc->sc_rx_ino, INTR_ENABLED);

	ldc_send_vers(lc);

	ifp->if_flags |= IFF_RUNNING;
}
int
vldcpclose(dev_t dev, int flag, int mode, struct proc *p)
{
	struct vldcp_softc *sc;

	sc = vldcp_lookup(dev);
	if (sc == NULL)
		return (ENXIO);

	cbus_intr_setenabled(sc->sc_tx_sysino, INTR_DISABLED);
	cbus_intr_setenabled(sc->sc_rx_sysino, INTR_DISABLED);

	hv_ldc_tx_qconf(sc->sc_lc.lc_id, 0, 0);
	hv_ldc_rx_qconf(sc->sc_lc.lc_id, 0, 0);

	device_unref(&sc->sc_dv);
	return (0);
}
Exemple #6
0
void
vnet_stop(struct ifnet *ifp)
{
	struct vnet_softc *sc = ifp->if_softc;
	struct ldc_conn *lc = &sc->sc_lc;

	ifp->if_flags &= ~(IFF_RUNNING | IFF_OACTIVE);
	ifp->if_timer = 0;

	cbus_intr_setenabled(sc->sc_bustag, sc->sc_tx_ino, INTR_DISABLED);
	cbus_intr_setenabled(sc->sc_bustag, sc->sc_rx_ino, INTR_DISABLED);

	hv_ldc_tx_qconf(lc->lc_id, 0, 0);
	hv_ldc_rx_qconf(lc->lc_id, 0, 0);
	lc->lc_tx_seqid = 0;
	lc->lc_state = 0;
	lc->lc_tx_state = lc->lc_rx_state = LDC_CHANNEL_DOWN;
	vnet_ldc_reset(lc);

	vnet_dring_free(sc->sc_dmatag, sc->sc_vd);

	hv_ldc_set_map_table(lc->lc_id, 0, 0);
	ldc_map_free(sc->sc_dmatag, sc->sc_lm);
}
Exemple #7
0
void
vdsk_attach(struct device *parent, struct device *self, void *aux)
{
	struct vdsk_softc *sc = (struct vdsk_softc *)self;
	struct cbus_attach_args *ca = aux;
	struct scsibus_attach_args saa;
	struct ldc_conn *lc;
	uint64_t sysino[2];
	int err, s;
	int timeout;

	sc->sc_bustag = ca->ca_bustag;
	sc->sc_dmatag = ca->ca_dmatag;

	if (cbus_intr_map(ca->ca_node, ca->ca_tx_ino, &sysino[0]) ||
	    cbus_intr_map(ca->ca_node, ca->ca_rx_ino, &sysino[1])) {
		printf(": can't map interrupt\n");
		return;
	}
	printf(": ivec 0x%lx, 0x%lx", sysino[0], sysino[1]);

	/*
	 * Un-configure queues before registering interrupt handlers,
	 * such that we dont get any stale LDC packets or events.
	 */
	hv_ldc_tx_qconf(ca->ca_id, 0, 0);
	hv_ldc_rx_qconf(ca->ca_id, 0, 0);

	sc->sc_tx_ih = bus_intr_establish(ca->ca_bustag, sysino[0], IPL_BIO,
	    0, vdsk_tx_intr, sc, sc->sc_dv.dv_xname);
	sc->sc_rx_ih = bus_intr_establish(ca->ca_bustag, sysino[1], IPL_BIO,
	    0, vdsk_rx_intr, sc, sc->sc_dv.dv_xname);
	if (sc->sc_tx_ih == NULL || sc->sc_rx_ih == NULL) {
		printf(", can't establish interrupt\n");
		return;
	}

	lc = &sc->sc_lc;
	lc->lc_id = ca->ca_id;
	lc->lc_sc = sc;
	lc->lc_reset = vdsk_ldc_reset;
	lc->lc_start = vdsk_ldc_start;
	lc->lc_rx_data = vdsk_rx_data;

	lc->lc_txq = ldc_queue_alloc(sc->sc_dmatag, VDSK_TX_ENTRIES);
	if (lc->lc_txq == NULL) {
		printf(", can't allocate tx queue\n");
		return;
	}

	lc->lc_rxq = ldc_queue_alloc(sc->sc_dmatag, VDSK_RX_ENTRIES);
	if (lc->lc_rxq == NULL) {
		printf(", can't allocate rx queue\n");
		goto free_txqueue;
	}

	sc->sc_lm = ldc_map_alloc(sc->sc_dmatag, 2048);
	if (sc->sc_lm == NULL) {
		printf(", can't allocate LDC mapping table\n");
		goto free_rxqueue;
	}

	err = hv_ldc_set_map_table(lc->lc_id,
	    sc->sc_lm->lm_map->dm_segs[0].ds_addr, sc->sc_lm->lm_nentries);
	if (err != H_EOK) {
		printf("hv_ldc_set_map_table %d\n", err);
		goto free_map;
	}

	sc->sc_vd = vdsk_dring_alloc(sc->sc_dmatag, 32);
	if (sc->sc_vd == NULL) {
		printf(", can't allocate dring\n");
		goto free_map;
	}
	sc->sc_vsd = malloc(32 * sizeof(*sc->sc_vsd), M_DEVBUF, M_NOWAIT);
	if (sc->sc_vsd == NULL) {
		printf(", can't allocate software ring\n");
		goto free_dring;
	}

	sc->sc_lm->lm_slot[0].entry = sc->sc_vd->vd_map->dm_segs[0].ds_addr;
	sc->sc_lm->lm_slot[0].entry &= LDC_MTE_RA_MASK;
	sc->sc_lm->lm_slot[0].entry |= LDC_MTE_CPR | LDC_MTE_CPW;
	sc->sc_lm->lm_slot[0].entry |= LDC_MTE_R | LDC_MTE_W;
	sc->sc_lm->lm_next = 1;
	sc->sc_lm->lm_count = 1;

	err = hv_ldc_tx_qconf(lc->lc_id,
	    lc->lc_txq->lq_map->dm_segs[0].ds_addr, lc->lc_txq->lq_nentries);
	if (err != H_EOK)
		printf("hv_ldc_tx_qconf %d\n", err);

	err = hv_ldc_rx_qconf(lc->lc_id,
	    lc->lc_rxq->lq_map->dm_segs[0].ds_addr, lc->lc_rxq->lq_nentries);
	if (err != H_EOK)
		printf("hv_ldc_rx_qconf %d\n", err);

	cbus_intr_setenabled(sysino[0], INTR_ENABLED);
	cbus_intr_setenabled(sysino[1], INTR_ENABLED);

	ldc_send_vers(lc);

	printf("\n");

	/*
	 * Interrupts aren't enabled during autoconf, so poll for VIO
	 * peer-to-peer hanshake completion.
	 */
	s = splbio();
	timeout = 1000;
	do {
		if (vdsk_rx_intr(sc) && sc->sc_vio_state == VIO_ESTABLISHED)
			break;

		delay(1000);
	} while(--timeout > 0);
	splx(s);

	if (sc->sc_vio_state != VIO_ESTABLISHED)
		return;

	scsi_iopool_init(&sc->sc_iopool, sc, vdsk_io_get, vdsk_io_put);

	sc->sc_switch.scsi_cmd = vdsk_scsi_cmd;
	sc->sc_switch.scsi_minphys = scsi_minphys;
	sc->sc_switch.dev_probe = vdsk_dev_probe;
	sc->sc_switch.dev_free = vdsk_dev_free;

	sc->sc_link.adapter = &sc->sc_switch;
	sc->sc_link.adapter_softc = self;
	sc->sc_link.adapter_buswidth = 2;
	sc->sc_link.luns = 1; /* XXX slices should be presented as luns? */
	sc->sc_link.adapter_target = 2;
	sc->sc_link.openings = sc->sc_vd->vd_nentries - 1;
	sc->sc_link.pool = &sc->sc_iopool;

	bzero(&saa, sizeof(saa));
	saa.saa_sc_link = &sc->sc_link;
	config_found(self, &saa, scsiprint);

	return;

free_dring:
	vdsk_dring_free(sc->sc_dmatag, sc->sc_vd);
free_map:
	hv_ldc_set_map_table(lc->lc_id, 0, 0);
	ldc_map_free(sc->sc_dmatag, sc->sc_lm);
free_rxqueue:
	ldc_queue_free(sc->sc_dmatag, lc->lc_rxq);
free_txqueue:
	ldc_queue_free(sc->sc_dmatag, lc->lc_txq);
}
Exemple #8
0
void
vnet_attach(struct device *parent, struct device *self, void *aux)
{
	struct vnet_softc *sc = (struct vnet_softc *)self;
	struct cbus_attach_args *ca = aux;
	struct ldc_conn *lc;
	struct ifnet *ifp;

	sc->sc_bustag = ca->ca_bustag;
	sc->sc_dmatag = ca->ca_dmatag;
	sc->sc_tx_ino = ca->ca_tx_ino;
	sc->sc_rx_ino = ca->ca_rx_ino;

	printf(": ivec 0x%llx, 0x%llx", sc->sc_tx_ino, sc->sc_rx_ino);

	/*
	 * Un-configure queues before registering interrupt handlers,
	 * such that we dont get any stale LDC packets or events.
	 */
	hv_ldc_tx_qconf(ca->ca_id, 0, 0);
	hv_ldc_rx_qconf(ca->ca_id, 0, 0);

	sc->sc_tx_ih = bus_intr_establish(ca->ca_bustag, sc->sc_tx_ino,
	    IPL_NET, BUS_INTR_ESTABLISH_MPSAFE, vnet_tx_intr,
	    sc, sc->sc_dv.dv_xname);
	sc->sc_rx_ih = bus_intr_establish(ca->ca_bustag, sc->sc_rx_ino,
	    IPL_NET, BUS_INTR_ESTABLISH_MPSAFE, vnet_rx_intr,
	    sc, sc->sc_dv.dv_xname);
	if (sc->sc_tx_ih == NULL || sc->sc_rx_ih == NULL) {
		printf(", can't establish interrupt\n");
		return;
	}

	lc = &sc->sc_lc;
	lc->lc_id = ca->ca_id;
	lc->lc_sc = sc;
	lc->lc_reset = vnet_ldc_reset;
	lc->lc_start = vnet_ldc_start;
	lc->lc_rx_data = vio_rx_data;

	timeout_set(&sc->sc_handshake_to, vnet_handshake, sc);
	sc->sc_peer_state = VIO_DP_STOPPED;

	lc->lc_txq = ldc_queue_alloc(sc->sc_dmatag, VNET_TX_ENTRIES);
	if (lc->lc_txq == NULL) {
		printf(", can't allocate tx queue\n");
		return;
	}

	lc->lc_rxq = ldc_queue_alloc(sc->sc_dmatag, VNET_RX_ENTRIES);
	if (lc->lc_rxq == NULL) {
		printf(", can't allocate rx queue\n");
		goto free_txqueue;
	}

	if (OF_getprop(ca->ca_node, "local-mac-address",
	    sc->sc_ac.ac_enaddr, ETHER_ADDR_LEN) > 0)
		printf(", address %s", ether_sprintf(sc->sc_ac.ac_enaddr));

	/*
	 * Each interface gets its own pool.
	 */
	pool_init(&sc->sc_pool, 2048, 0, 0, 0, sc->sc_dv.dv_xname, NULL);
	pool_setipl(&sc->sc_pool, IPL_NET);

	ifp = &sc->sc_ac.ac_if;
	ifp->if_softc = sc;
	ifp->if_flags = IFF_BROADCAST | IFF_SIMPLEX | IFF_MULTICAST;
	ifp->if_link_state = LINK_STATE_DOWN;
	ifp->if_ioctl = vnet_ioctl;
	ifp->if_start = vnet_start;
	ifp->if_watchdog = vnet_watchdog;
	strlcpy(ifp->if_xname, sc->sc_dv.dv_xname, IFNAMSIZ);
	IFQ_SET_MAXLEN(&ifp->if_snd, 31); /* XXX */
	IFQ_SET_READY(&ifp->if_snd);

	ifmedia_init(&sc->sc_media, 0, vnet_media_change, vnet_media_status);
	ifmedia_add(&sc->sc_media, IFM_ETHER | IFM_AUTO, 0, NULL);
	ifmedia_set(&sc->sc_media, IFM_ETHER | IFM_AUTO);

	if_attach(ifp);
	ether_ifattach(ifp);

	printf("\n");
	return;

free_txqueue:
	ldc_queue_free(sc->sc_dmatag, lc->lc_txq);
}
Exemple #9
0
void
vdsp_attach(struct device *parent, struct device *self, void *aux)
{
	struct vdsp_softc *sc = (struct vdsp_softc *)self;
	struct cbus_attach_args *ca = aux;
	struct ldc_conn *lc;

	sc->sc_idx = ca->ca_idx;
	sc->sc_bustag = ca->ca_bustag;
	sc->sc_dmatag = ca->ca_dmatag;
	sc->sc_tx_ino = ca->ca_tx_ino;
	sc->sc_rx_ino = ca->ca_rx_ino;

	printf(": ivec 0x%llx, 0x%llx", sc->sc_tx_ino, sc->sc_rx_ino);

	mtx_init(&sc->sc_desc_mtx, IPL_BIO);

	/*
	 * Un-configure queues before registering interrupt handlers,
	 * such that we dont get any stale LDC packets or events.
	 */
	hv_ldc_tx_qconf(ca->ca_id, 0, 0);
	hv_ldc_rx_qconf(ca->ca_id, 0, 0);

	sc->sc_tx_ih = bus_intr_establish(ca->ca_bustag, sc->sc_tx_ino,
	    IPL_BIO, BUS_INTR_ESTABLISH_MPSAFE, vdsp_tx_intr, sc,
	    sc->sc_dv.dv_xname);
	sc->sc_rx_ih = bus_intr_establish(ca->ca_bustag, sc->sc_rx_ino,
	    IPL_BIO, BUS_INTR_ESTABLISH_MPSAFE, vdsp_rx_intr, sc,
	    sc->sc_dv.dv_xname);
	if (sc->sc_tx_ih == NULL || sc->sc_rx_ih == NULL) {
		printf(", can't establish interrupt\n");
		return;
	}

	lc = &sc->sc_lc;
	lc->lc_id = ca->ca_id;
	lc->lc_sc = sc;
	lc->lc_reset = vdsp_ldc_reset;
	lc->lc_start = vdsp_ldc_start;
	lc->lc_rx_data = vdsp_rx_data;

	lc->lc_txq = ldc_queue_alloc(sc->sc_dmatag, VDSK_TX_ENTRIES);
	if (lc->lc_txq == NULL) {
		printf(", can't allocate tx queue\n");
		return;
	}

	lc->lc_rxq = ldc_queue_alloc(sc->sc_dmatag, VDSK_RX_ENTRIES);
	if (lc->lc_rxq == NULL) {
		printf(", can't allocate rx queue\n");
		goto free_txqueue;
	}

	task_set(&sc->sc_open_task, vdsp_open, sc);
	task_set(&sc->sc_alloc_task, vdsp_alloc, sc);
	task_set(&sc->sc_close_task, vdsp_close, sc);
	task_set(&sc->sc_read_task, vdsp_read, sc);

	printf("\n");

	return;

#if 0
free_rxqueue:
	ldc_queue_free(sc->sc_dmatag, lc->lc_rxq);
#endif
free_txqueue:
	ldc_queue_free(sc->sc_dmatag, lc->lc_txq);
}
Exemple #10
0
void
vldcp_attach(struct device *parent, struct device *self, void *aux)
{
	struct vldcp_softc *sc = (struct vldcp_softc *)self;
	struct cbus_attach_args *ca = aux;
	struct vldc_svc *svc;
	struct ldc_conn *lc;

	sc->sc_bustag = ca->ca_bustag;
	sc->sc_dmatag = ca->ca_dmatag;

	if (cbus_intr_map(ca->ca_node, ca->ca_tx_ino, &sc->sc_tx_sysino) ||
	    cbus_intr_map(ca->ca_node, ca->ca_rx_ino, &sc->sc_rx_sysino)) {
		printf(": can't map interrupt\n");
		return;
	}
	printf(": ivec 0x%llx, 0x%llx", sc->sc_tx_sysino, sc->sc_rx_sysino);

	/*
	 * Un-configure queues before registering interrupt handlers,
	 * such that we dont get any stale LDC packets or events.
	 */
	hv_ldc_tx_qconf(ca->ca_id, 0, 0);
	hv_ldc_rx_qconf(ca->ca_id, 0, 0);

	sc->sc_tx_ih = bus_intr_establish(ca->ca_bustag, sc->sc_tx_sysino,
	    IPL_TTY, 0, vldcp_tx_intr, sc, sc->sc_dv.dv_xname);
	sc->sc_rx_ih = bus_intr_establish(ca->ca_bustag, sc->sc_rx_sysino,
	    IPL_TTY, 0, vldcp_rx_intr, sc, sc->sc_dv.dv_xname);
	if (sc->sc_tx_ih == NULL || sc->sc_rx_ih == NULL) {
		printf(", can't establish interrupt\n");
		return;
	}

	lc = &sc->sc_lc;
	lc->lc_id = ca->ca_id;
	lc->lc_sc = sc;

	lc->lc_txq = ldc_queue_alloc(sc->sc_dmatag, VLDCP_TX_ENTRIES);
	if (lc->lc_txq == NULL) {
		printf(", can't allocate tx queue\n");
		return;
	}

	lc->lc_rxq = ldc_queue_alloc(sc->sc_dmatag, VLDCP_RX_ENTRIES);
	if (lc->lc_rxq == NULL) {
		printf(", can't allocate rx queue\n");
		goto free_txqueue;
	}

	for (svc = vldc_svc; svc->vs_name != NULL; svc++) {
		if (strcmp(ca->ca_name, svc->vs_name) == 0) {
			svc->vs_sc = sc;
			break;
		}
	}

	if (strncmp(ca->ca_name, "ldom-", 5) == 0 &&
	    strcmp(ca->ca_name, "ldom-primary") != 0) {
		int minor = VLDC_LDOM_OFFSET + vldc_num_ldoms++;
		if (minor < nitems(vldc_svc))
			vldc_svc[minor].vs_sc = sc;
	}

	printf(" channel \"%s\"\n", ca->ca_name);
	return;

#if 0
free_rxqueue:
	ldc_queue_free(sc->sc_dmatag, lc->lc_rxq);
#endif
free_txqueue:
	ldc_queue_free(sc->sc_dmatag, lc->lc_txq);
}