static int pp_check_ntb(struct ntb_dev *ntb) { u64 pmask; if (ntb_db_is_unsafe(ntb)) { dev_dbg(&ntb->dev, "Doorbell is unsafe\n"); if (!unsafe) return -EINVAL; } if (ntb_spad_is_unsafe(ntb)) { dev_dbg(&ntb->dev, "Scratchpad is unsafe\n"); if (!unsafe) return -EINVAL; } pmask = GENMASK_ULL(ntb_peer_port_count(ntb), 0); if ((ntb_db_valid_mask(ntb) & pmask) != pmask) { dev_err(&ntb->dev, "Unsupported DB configuration\n"); return -EINVAL; } if (ntb_spad_count(ntb) < 1 && ntb_msg_count(ntb) < 1) { dev_err(&ntb->dev, "Scratchpads and messages unsupported\n"); return -EINVAL; } else if (ntb_spad_count(ntb) < 1) { dev_dbg(&ntb->dev, "Scratchpads unsupported\n"); } else if (ntb_msg_count(ntb) < 1) { dev_dbg(&ntb->dev, "Messages unsupported\n"); } return 0; }
static int pp_mask_events(struct pp_ctx *pp) { u64 db_mask, msg_mask; int ret; db_mask = ntb_db_valid_mask(pp->ntb); ret = ntb_db_set_mask(pp->ntb, db_mask); if (ret) return ret; /* Skip message events masking if unsupported */ if (ntb_msg_count(pp->ntb) < 1) return 0; msg_mask = ntb_msg_outbits(pp->ntb) | ntb_msg_inbits(pp->ntb); return ntb_msg_set_mask(pp->ntb, msg_mask); }
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); }