Beispiel #1
0
static int
ntb_transport_init(struct ntb_softc *ntb)
{
	struct ntb_netdev *nt = &net_softc;
	int rc, i;

	nt->max_qps = max_num_clients;
	ntb_register_transport(ntb, nt);
	mtx_init(&nt->tx_lock, "ntb transport tx", NULL, MTX_DEF);
	mtx_init(&nt->rx_lock, "ntb transport rx", NULL, MTX_DEF);

	nt->qps = malloc(nt->max_qps * sizeof(struct ntb_transport_qp),
			  M_NTB_IF, M_WAITOK|M_ZERO);

	nt->qp_bitmap = ((uint64_t) 1 << nt->max_qps) - 1;

	for (i = 0; i < nt->max_qps; i++)
		ntb_transport_init_queue(nt, i);

	callout_init(&nt->link_work, 0);

	rc = ntb_register_event_callback(ntb,
					 ntb_transport_event_callback);
	if (rc != 0)
		goto err;

	if (ntb_query_link_status(ntb)) {
		if (bootverbose)
			device_printf(ntb_get_device(ntb), "link up\n");
		callout_reset(&nt->link_work, 0, ntb_transport_link_work, nt);
	}

	return (0);

err:
	free(nt->qps, M_NTB_IF);
	ntb_unregister_transport(ntb);
	return (rc);
}
Beispiel #2
0
static int
ntb_transport_probe(struct ntb_softc *ntb)
{
	struct ntb_transport_ctx *nt = &net_softc;
	struct ntb_transport_mw *mw;
	uint64_t qp_bitmap;
	int rc;
	unsigned i;

	nt->mw_count = ntb_mw_count(ntb);
	for (i = 0; i < nt->mw_count; i++) {
		mw = &nt->mw_vec[i];

		rc = ntb_mw_get_range(ntb, i, &mw->phys_addr, &mw->vbase,
		    &mw->phys_size, &mw->xlat_align, &mw->xlat_align_size,
		    &mw->addr_limit);
		if (rc != 0)
			goto err;

		mw->buff_size = 0;
		mw->xlat_size = 0;
		mw->virt_addr = NULL;
		mw->dma_addr = 0;
	}

	qp_bitmap = ntb_db_valid_mask(ntb);
	nt->qp_count = flsll(qp_bitmap);
	KASSERT(nt->qp_count != 0, ("bogus db bitmap"));
	nt->qp_count -= 1;

	if (max_num_clients != 0 && max_num_clients < nt->qp_count)
		nt->qp_count = max_num_clients;
	else if (nt->mw_count < nt->qp_count)
		nt->qp_count = nt->mw_count;
	KASSERT(nt->qp_count <= QP_SETSIZE, ("invalid qp_count"));

	mtx_init(&nt->tx_lock, "ntb transport tx", NULL, MTX_DEF);
	mtx_init(&nt->rx_lock, "ntb transport rx", NULL, MTX_DEF);

	nt->qp_vec = malloc(nt->qp_count * sizeof(*nt->qp_vec), M_NTB_IF,
	    M_WAITOK | M_ZERO);

	for (i = 0; i < nt->qp_count; i++) {
		set_bit(i, &nt->qp_bitmap);
		set_bit(i, &nt->qp_bitmap_free);
		ntb_transport_init_queue(nt, i);
	}

	callout_init(&nt->link_work, 0);
	callout_init(&nt->link_watchdog, 0);
	TASK_INIT(&nt->link_cleanup, 0, ntb_transport_link_cleanup_work, nt);

	rc = ntb_set_ctx(ntb, nt, &ntb_transport_ops);
	if (rc != 0)
		goto err;

	nt->link_is_up = false;
	ntb_link_enable(ntb, NTB_SPEED_AUTO, NTB_WIDTH_AUTO);
	ntb_link_event(ntb);

	callout_reset(&nt->link_work, 0, ntb_transport_link_work, nt);
	if (enable_xeon_watchdog != 0)
		callout_reset(&nt->link_watchdog, 0, xeon_link_watchdog_hb, nt);
	return (0);

err:
	free(nt->qp_vec, M_NTB_IF);
	nt->qp_vec = NULL;
	return (rc);
}