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);
}
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);
}