Lines Matching full:qp
120 struct ntb_transport_qp *qp; member
142 u8 qp_num; /* Only 64 QP's are allowed. 0-63 */
148 void (*tx_handler)(struct ntb_transport_qp *qp, void *qp_data,
160 void (*rx_handler)(struct ntb_transport_qp *qp, void *qp_data,
272 #define QP_TO_MW(nt, qp) ((qp) % nt->mw_count) argument
279 static int ntb_async_tx_submit(struct ntb_transport_qp *qp,
468 struct ntb_transport_qp *qp; in debugfs_read() local
472 qp = filp->private_data; in debugfs_read()
474 if (!qp || !qp->link_is_up) in debugfs_read()
485 "\nNTB QP stats:\n\n"); in debugfs_read()
487 "rx_bytes - \t%llu\n", qp->rx_bytes); in debugfs_read()
489 "rx_pkts - \t%llu\n", qp->rx_pkts); in debugfs_read()
491 "rx_memcpy - \t%llu\n", qp->rx_memcpy); in debugfs_read()
493 "rx_async - \t%llu\n", qp->rx_async); in debugfs_read()
495 "rx_ring_empty - %llu\n", qp->rx_ring_empty); in debugfs_read()
497 "rx_err_no_buf - %llu\n", qp->rx_err_no_buf); in debugfs_read()
499 "rx_err_oflow - \t%llu\n", qp->rx_err_oflow); in debugfs_read()
501 "rx_err_ver - \t%llu\n", qp->rx_err_ver); in debugfs_read()
503 "rx_buff - \t0x%p\n", qp->rx_buff); in debugfs_read()
505 "rx_index - \t%u\n", qp->rx_index); in debugfs_read()
507 "rx_max_entry - \t%u\n", qp->rx_max_entry); in debugfs_read()
509 "rx_alloc_entry - \t%u\n\n", qp->rx_alloc_entry); in debugfs_read()
512 "tx_bytes - \t%llu\n", qp->tx_bytes); in debugfs_read()
514 "tx_pkts - \t%llu\n", qp->tx_pkts); in debugfs_read()
516 "tx_memcpy - \t%llu\n", qp->tx_memcpy); in debugfs_read()
518 "tx_async - \t%llu\n", qp->tx_async); in debugfs_read()
520 "tx_ring_full - \t%llu\n", qp->tx_ring_full); in debugfs_read()
522 "tx_err_no_buf - %llu\n", qp->tx_err_no_buf); in debugfs_read()
524 "tx_mw - \t0x%p\n", qp->tx_mw); in debugfs_read()
526 "tx_index (H) - \t%u\n", qp->tx_index); in debugfs_read()
529 qp->remote_rx_info->entry); in debugfs_read()
531 "tx_max_entry - \t%u\n", qp->tx_max_entry); in debugfs_read()
534 ntb_transport_tx_free_entry(qp)); in debugfs_read()
540 qp->tx_dma_chan ? "Yes" : "No"); in debugfs_read()
543 qp->rx_dma_chan ? "Yes" : "No"); in debugfs_read()
545 "QP Link - \t%s\n", in debugfs_read()
546 qp->link_is_up ? "Up" : "Down"); in debugfs_read()
618 struct ntb_transport_qp *qp = &nt->qp_vec[qp_num]; in ntb_transport_setup_qp_mw() local
642 qp->rx_buff = mw->virt_addr + rx_size * (qp_num / mw_count); in ntb_transport_setup_qp_mw()
645 qp->remote_rx_info = qp->rx_buff + rx_size; in ntb_transport_setup_qp_mw()
648 qp->rx_max_frame = min(transport_mtu, rx_size / 2); in ntb_transport_setup_qp_mw()
649 qp->rx_max_entry = rx_size / qp->rx_max_frame; in ntb_transport_setup_qp_mw()
650 qp->rx_index = 0; in ntb_transport_setup_qp_mw()
658 for (i = qp->rx_alloc_entry; i < qp->rx_max_entry; i++) { in ntb_transport_setup_qp_mw()
663 entry->qp = qp; in ntb_transport_setup_qp_mw()
664 ntb_list_add(&qp->ntb_rx_q_lock, &entry->entry, in ntb_transport_setup_qp_mw()
665 &qp->rx_free_q); in ntb_transport_setup_qp_mw()
666 qp->rx_alloc_entry++; in ntb_transport_setup_qp_mw()
669 qp->remote_rx_info->entry = qp->rx_max_entry - 1; in ntb_transport_setup_qp_mw()
672 for (i = 0; i < qp->rx_max_entry; i++) { in ntb_transport_setup_qp_mw()
673 void *offset = (qp->rx_buff + qp->rx_max_frame * (i + 1) - in ntb_transport_setup_qp_mw()
678 qp->rx_pkts = 0; in ntb_transport_setup_qp_mw()
679 qp->tx_pkts = 0; in ntb_transport_setup_qp_mw()
680 qp->tx_index = 0; in ntb_transport_setup_qp_mw()
687 struct ntb_transport_qp *qp = dev; in ntb_transport_isr() local
689 tasklet_schedule(&qp->rxc_db_work); in ntb_transport_isr()
697 struct ntb_transport_qp *qp = &nt->qp_vec[qp_num]; in ntb_transport_setup_qp_peer_msi() local
706 qp->peer_msi_desc.addr_offset = in ntb_transport_setup_qp_peer_msi()
707 ntb_peer_spad_read(qp->ndev, PIDX, spad); in ntb_transport_setup_qp_peer_msi()
708 qp->peer_msi_desc.data = in ntb_transport_setup_qp_peer_msi()
709 ntb_peer_spad_read(qp->ndev, PIDX, spad + 1); in ntb_transport_setup_qp_peer_msi()
711 dev_dbg(&qp->ndev->pdev->dev, "QP%d Peer MSI addr=%x data=%x\n", in ntb_transport_setup_qp_peer_msi()
712 qp_num, qp->peer_msi_desc.addr_offset, qp->peer_msi_desc.data); in ntb_transport_setup_qp_peer_msi()
714 if (qp->peer_msi_desc.addr_offset) { in ntb_transport_setup_qp_peer_msi()
715 qp->use_msi = true; in ntb_transport_setup_qp_peer_msi()
716 dev_info(&qp->ndev->pdev->dev, in ntb_transport_setup_qp_peer_msi()
717 "Using MSI interrupts for QP%d\n", qp_num); in ntb_transport_setup_qp_peer_msi()
724 struct ntb_transport_qp *qp = &nt->qp_vec[qp_num]; in ntb_transport_setup_qp_msi() local
732 dev_warn_once(&qp->ndev->pdev->dev, in ntb_transport_setup_qp_msi()
737 ntb_spad_write(qp->ndev, spad, 0); in ntb_transport_setup_qp_msi()
738 ntb_spad_write(qp->ndev, spad + 1, 0); in ntb_transport_setup_qp_msi()
740 if (!qp->msi_irq) { in ntb_transport_setup_qp_msi()
741 qp->msi_irq = ntbm_msi_request_irq(qp->ndev, ntb_transport_isr, in ntb_transport_setup_qp_msi()
742 KBUILD_MODNAME, qp, in ntb_transport_setup_qp_msi()
743 &qp->msi_desc); in ntb_transport_setup_qp_msi()
744 if (qp->msi_irq < 0) { in ntb_transport_setup_qp_msi()
745 dev_warn(&qp->ndev->pdev->dev, in ntb_transport_setup_qp_msi()
746 "Unable to allocate MSI interrupt for qp%d\n", in ntb_transport_setup_qp_msi()
752 rc = ntb_spad_write(qp->ndev, spad, qp->msi_desc.addr_offset); in ntb_transport_setup_qp_msi()
756 rc = ntb_spad_write(qp->ndev, spad + 1, qp->msi_desc.data); in ntb_transport_setup_qp_msi()
760 dev_dbg(&qp->ndev->pdev->dev, "QP%d MSI %d addr=%x data=%x\n", in ntb_transport_setup_qp_msi()
761 qp_num, qp->msi_irq, qp->msi_desc.addr_offset, in ntb_transport_setup_qp_msi()
762 qp->msi_desc.data); in ntb_transport_setup_qp_msi()
767 devm_free_irq(&nt->ndev->dev, qp->msi_irq, qp); in ntb_transport_setup_qp_msi()
927 static void ntb_qp_link_context_reset(struct ntb_transport_qp *qp) in ntb_qp_link_context_reset() argument
929 qp->link_is_up = false; in ntb_qp_link_context_reset()
930 qp->active = false; in ntb_qp_link_context_reset()
932 qp->tx_index = 0; in ntb_qp_link_context_reset()
933 qp->rx_index = 0; in ntb_qp_link_context_reset()
934 qp->rx_bytes = 0; in ntb_qp_link_context_reset()
935 qp->rx_pkts = 0; in ntb_qp_link_context_reset()
936 qp->rx_ring_empty = 0; in ntb_qp_link_context_reset()
937 qp->rx_err_no_buf = 0; in ntb_qp_link_context_reset()
938 qp->rx_err_oflow = 0; in ntb_qp_link_context_reset()
939 qp->rx_err_ver = 0; in ntb_qp_link_context_reset()
940 qp->rx_memcpy = 0; in ntb_qp_link_context_reset()
941 qp->rx_async = 0; in ntb_qp_link_context_reset()
942 qp->tx_bytes = 0; in ntb_qp_link_context_reset()
943 qp->tx_pkts = 0; in ntb_qp_link_context_reset()
944 qp->tx_ring_full = 0; in ntb_qp_link_context_reset()
945 qp->tx_err_no_buf = 0; in ntb_qp_link_context_reset()
946 qp->tx_memcpy = 0; in ntb_qp_link_context_reset()
947 qp->tx_async = 0; in ntb_qp_link_context_reset()
950 static void ntb_qp_link_down_reset(struct ntb_transport_qp *qp) in ntb_qp_link_down_reset() argument
952 ntb_qp_link_context_reset(qp); in ntb_qp_link_down_reset()
953 if (qp->remote_rx_info) in ntb_qp_link_down_reset()
954 qp->remote_rx_info->entry = qp->rx_max_entry - 1; in ntb_qp_link_down_reset()
957 static void ntb_qp_link_cleanup(struct ntb_transport_qp *qp) in ntb_qp_link_cleanup() argument
959 struct ntb_transport_ctx *nt = qp->transport; in ntb_qp_link_cleanup()
962 dev_info(&pdev->dev, "qp %d: Link Cleanup\n", qp->qp_num); in ntb_qp_link_cleanup()
964 cancel_delayed_work_sync(&qp->link_work); in ntb_qp_link_cleanup()
965 ntb_qp_link_down_reset(qp); in ntb_qp_link_cleanup()
967 if (qp->event_handler) in ntb_qp_link_cleanup()
968 qp->event_handler(qp->cb_data, qp->link_is_up); in ntb_qp_link_cleanup()
973 struct ntb_transport_qp *qp = container_of(work, in ntb_qp_link_cleanup_work() local
976 struct ntb_transport_ctx *nt = qp->transport; in ntb_qp_link_cleanup_work()
978 ntb_qp_link_cleanup(qp); in ntb_qp_link_cleanup_work()
981 schedule_delayed_work(&qp->link_work, in ntb_qp_link_cleanup_work()
985 static void ntb_qp_link_down(struct ntb_transport_qp *qp) in ntb_qp_link_down() argument
987 schedule_work(&qp->link_cleanup); in ntb_qp_link_down()
992 struct ntb_transport_qp *qp; in ntb_transport_link_cleanup() local
1001 qp = &nt->qp_vec[i]; in ntb_transport_link_cleanup()
1002 ntb_qp_link_cleanup(qp); in ntb_transport_link_cleanup()
1003 cancel_work_sync(&qp->link_cleanup); in ntb_transport_link_cleanup()
1004 cancel_delayed_work_sync(&qp->link_work); in ntb_transport_link_cleanup()
1119 struct ntb_transport_qp *qp = &nt->qp_vec[i]; in ntb_transport_link_work() local
1124 if (qp->client_ready) in ntb_transport_link_work()
1125 schedule_delayed_work(&qp->link_work, 0); in ntb_transport_link_work()
1146 struct ntb_transport_qp *qp = container_of(work, in ntb_qp_link_work() local
1149 struct pci_dev *pdev = qp->ndev->pdev; in ntb_qp_link_work()
1150 struct ntb_transport_ctx *nt = qp->transport; in ntb_qp_link_work()
1157 ntb_peer_spad_write(nt->ndev, PIDX, QP_LINKS, val | BIT(qp->qp_num)); in ntb_qp_link_work()
1159 /* query remote spad for qp ready bits */ in ntb_qp_link_work()
1160 dev_dbg_ratelimited(&pdev->dev, "Remote QP link status = %x\n", val); in ntb_qp_link_work()
1163 if (val & BIT(qp->qp_num)) { in ntb_qp_link_work()
1164 dev_info(&pdev->dev, "qp %d: Link Up\n", qp->qp_num); in ntb_qp_link_work()
1165 qp->link_is_up = true; in ntb_qp_link_work()
1166 qp->active = true; in ntb_qp_link_work()
1168 if (qp->event_handler) in ntb_qp_link_work()
1169 qp->event_handler(qp->cb_data, qp->link_is_up); in ntb_qp_link_work()
1171 if (qp->active) in ntb_qp_link_work()
1172 tasklet_schedule(&qp->rxc_db_work); in ntb_qp_link_work()
1174 schedule_delayed_work(&qp->link_work, in ntb_qp_link_work()
1181 struct ntb_transport_qp *qp; in ntb_transport_init_queue() local
1193 qp = &nt->qp_vec[qp_num]; in ntb_transport_init_queue()
1194 qp->qp_num = qp_num; in ntb_transport_init_queue()
1195 qp->transport = nt; in ntb_transport_init_queue()
1196 qp->ndev = nt->ndev; in ntb_transport_init_queue()
1197 qp->client_ready = false; in ntb_transport_init_queue()
1198 qp->event_handler = NULL; in ntb_transport_init_queue()
1199 ntb_qp_link_context_reset(qp); in ntb_transport_init_queue()
1215 qp->tx_mw_size = tx_size; in ntb_transport_init_queue()
1216 qp->tx_mw = nt->mw_vec[mw_num].vbase + qp_offset; in ntb_transport_init_queue()
1217 if (!qp->tx_mw) in ntb_transport_init_queue()
1220 qp->tx_mw_phys = mw_base + qp_offset; in ntb_transport_init_queue()
1221 if (!qp->tx_mw_phys) in ntb_transport_init_queue()
1225 qp->rx_info = qp->tx_mw + tx_size; in ntb_transport_init_queue()
1228 qp->tx_max_frame = min(transport_mtu, tx_size / 2); in ntb_transport_init_queue()
1229 qp->tx_max_entry = tx_size / qp->tx_max_frame; in ntb_transport_init_queue()
1234 snprintf(debugfs_name, 4, "qp%d", qp_num); in ntb_transport_init_queue()
1235 qp->debugfs_dir = debugfs_create_dir(debugfs_name, in ntb_transport_init_queue()
1238 qp->debugfs_stats = debugfs_create_file("stats", S_IRUSR, in ntb_transport_init_queue()
1239 qp->debugfs_dir, qp, in ntb_transport_init_queue()
1242 qp->debugfs_dir = NULL; in ntb_transport_init_queue()
1243 qp->debugfs_stats = NULL; in ntb_transport_init_queue()
1246 INIT_DELAYED_WORK(&qp->link_work, ntb_qp_link_work); in ntb_transport_init_queue()
1247 INIT_WORK(&qp->link_cleanup, ntb_qp_link_cleanup_work); in ntb_transport_init_queue()
1249 spin_lock_init(&qp->ntb_rx_q_lock); in ntb_transport_init_queue()
1250 spin_lock_init(&qp->ntb_tx_free_q_lock); in ntb_transport_init_queue()
1252 INIT_LIST_HEAD(&qp->rx_post_q); in ntb_transport_init_queue()
1253 INIT_LIST_HEAD(&qp->rx_pend_q); in ntb_transport_init_queue()
1254 INIT_LIST_HEAD(&qp->rx_free_q); in ntb_transport_init_queue()
1255 INIT_LIST_HEAD(&qp->tx_free_q); in ntb_transport_init_queue()
1257 tasklet_init(&qp->rxc_db_work, ntb_transport_rxc_db, in ntb_transport_init_queue()
1258 (unsigned long)qp); in ntb_transport_init_queue()
1426 struct ntb_transport_qp *qp; in ntb_transport_free() local
1436 /* verify that all the qp's are freed */ in ntb_transport_free()
1438 qp = &nt->qp_vec[i]; in ntb_transport_free()
1440 ntb_transport_free_queue(qp); in ntb_transport_free()
1441 debugfs_remove_recursive(qp->debugfs_dir); in ntb_transport_free()
1459 static void ntb_complete_rxc(struct ntb_transport_qp *qp) in ntb_complete_rxc() argument
1466 spin_lock_irqsave(&qp->ntb_rx_q_lock, irqflags); in ntb_complete_rxc()
1468 while (!list_empty(&qp->rx_post_q)) { in ntb_complete_rxc()
1469 entry = list_first_entry(&qp->rx_post_q, in ntb_complete_rxc()
1475 iowrite32(entry->rx_index, &qp->rx_info->entry); in ntb_complete_rxc()
1480 list_move_tail(&entry->entry, &qp->rx_free_q); in ntb_complete_rxc()
1482 spin_unlock_irqrestore(&qp->ntb_rx_q_lock, irqflags); in ntb_complete_rxc()
1484 if (qp->rx_handler && qp->client_ready) in ntb_complete_rxc()
1485 qp->rx_handler(qp, qp->cb_data, cb_data, len); in ntb_complete_rxc()
1487 spin_lock_irqsave(&qp->ntb_rx_q_lock, irqflags); in ntb_complete_rxc()
1490 spin_unlock_irqrestore(&qp->ntb_rx_q_lock, irqflags); in ntb_complete_rxc()
1509 struct ntb_transport_qp *qp = entry->qp; in ntb_rx_copy_callback() local
1510 void *offset = qp->rx_buff + qp->rx_max_frame * in ntb_rx_copy_callback()
1511 qp->rx_index; in ntb_rx_copy_callback()
1514 qp->rx_memcpy++; in ntb_rx_copy_callback()
1526 ntb_complete_rxc(entry->qp); in ntb_rx_copy_callback()
1545 struct ntb_transport_qp *qp = entry->qp; in ntb_async_rx_submit() local
1546 struct dma_chan *chan = qp->rx_dma_chan; in ntb_async_rx_submit()
1596 qp->last_cookie = cookie; in ntb_async_rx_submit()
1598 qp->rx_async++; in ntb_async_rx_submit()
1612 struct ntb_transport_qp *qp = entry->qp; in ntb_async_rx() local
1613 struct dma_chan *chan = qp->rx_dma_chan; in ntb_async_rx()
1627 qp->rx_async++; in ntb_async_rx()
1633 qp->rx_memcpy++; in ntb_async_rx()
1636 static int ntb_process_rxc(struct ntb_transport_qp *qp) in ntb_process_rxc() argument
1642 offset = qp->rx_buff + qp->rx_max_frame * qp->rx_index; in ntb_process_rxc()
1643 hdr = offset + qp->rx_max_frame - sizeof(struct ntb_payload_header); in ntb_process_rxc()
1645 dev_dbg(&qp->ndev->pdev->dev, "qp %d: RX ver %u len %d flags %x\n", in ntb_process_rxc()
1646 qp->qp_num, hdr->ver, hdr->len, hdr->flags); in ntb_process_rxc()
1649 dev_dbg(&qp->ndev->pdev->dev, "done flag not set\n"); in ntb_process_rxc()
1650 qp->rx_ring_empty++; in ntb_process_rxc()
1655 dev_dbg(&qp->ndev->pdev->dev, "link down flag set\n"); in ntb_process_rxc()
1656 ntb_qp_link_down(qp); in ntb_process_rxc()
1661 if (hdr->ver != (u32)qp->rx_pkts) { in ntb_process_rxc()
1662 dev_dbg(&qp->ndev->pdev->dev, in ntb_process_rxc()
1664 qp->rx_pkts, hdr->ver); in ntb_process_rxc()
1665 qp->rx_err_ver++; in ntb_process_rxc()
1669 entry = ntb_list_mv(&qp->ntb_rx_q_lock, &qp->rx_pend_q, &qp->rx_post_q); in ntb_process_rxc()
1671 dev_dbg(&qp->ndev->pdev->dev, "no receive buffer\n"); in ntb_process_rxc()
1672 qp->rx_err_no_buf++; in ntb_process_rxc()
1677 entry->rx_index = qp->rx_index; in ntb_process_rxc()
1680 dev_dbg(&qp->ndev->pdev->dev, in ntb_process_rxc()
1683 qp->rx_err_oflow++; in ntb_process_rxc()
1688 ntb_complete_rxc(qp); in ntb_process_rxc()
1690 dev_dbg(&qp->ndev->pdev->dev, in ntb_process_rxc()
1692 qp->rx_index, hdr->ver, hdr->len, entry->len); in ntb_process_rxc()
1694 qp->rx_bytes += hdr->len; in ntb_process_rxc()
1695 qp->rx_pkts++; in ntb_process_rxc()
1702 qp->rx_index++; in ntb_process_rxc()
1703 qp->rx_index %= qp->rx_max_entry; in ntb_process_rxc()
1710 struct ntb_transport_qp *qp = (void *)data; in ntb_transport_rxc_db() local
1713 dev_dbg(&qp->ndev->pdev->dev, "%s: doorbell %d received\n", in ntb_transport_rxc_db()
1714 __func__, qp->qp_num); in ntb_transport_rxc_db()
1719 for (i = 0; i < qp->rx_max_entry; i++) { in ntb_transport_rxc_db()
1720 rc = ntb_process_rxc(qp); in ntb_transport_rxc_db()
1725 if (i && qp->rx_dma_chan) in ntb_transport_rxc_db()
1726 dma_async_issue_pending(qp->rx_dma_chan); in ntb_transport_rxc_db()
1728 if (i == qp->rx_max_entry) { in ntb_transport_rxc_db()
1730 if (qp->active) in ntb_transport_rxc_db()
1731 tasklet_schedule(&qp->rxc_db_work); in ntb_transport_rxc_db()
1732 } else if (ntb_db_read(qp->ndev) & BIT_ULL(qp->qp_num)) { in ntb_transport_rxc_db()
1734 ntb_db_clear(qp->ndev, BIT_ULL(qp->qp_num)); in ntb_transport_rxc_db()
1736 ntb_db_read(qp->ndev); in ntb_transport_rxc_db()
1742 if (qp->active) in ntb_transport_rxc_db()
1743 tasklet_schedule(&qp->rxc_db_work); in ntb_transport_rxc_db()
1751 struct ntb_transport_qp *qp = entry->qp; in ntb_tx_copy_callback() local
1766 qp->tx_mw + qp->tx_max_frame * in ntb_tx_copy_callback()
1771 qp->tx_memcpy++; in ntb_tx_copy_callback()
1783 if (qp->use_msi) in ntb_tx_copy_callback()
1784 ntb_msi_peer_trigger(qp->ndev, PIDX, &qp->peer_msi_desc); in ntb_tx_copy_callback()
1786 ntb_peer_db_set(qp->ndev, BIT_ULL(qp->qp_num)); in ntb_tx_copy_callback()
1793 qp->tx_bytes += entry->len; in ntb_tx_copy_callback()
1795 if (qp->tx_handler) in ntb_tx_copy_callback()
1796 qp->tx_handler(qp, qp->cb_data, entry->cb_data, in ntb_tx_copy_callback()
1800 ntb_list_add(&qp->ntb_tx_free_q_lock, &entry->entry, &qp->tx_free_q); in ntb_tx_copy_callback()
1821 static int ntb_async_tx_submit(struct ntb_transport_qp *qp, in ntb_async_tx_submit() argument
1825 struct dma_chan *chan = qp->tx_dma_chan; in ntb_async_tx_submit()
1835 dest = qp->tx_mw_dma_addr + qp->tx_max_frame * entry->tx_index; in ntb_async_tx_submit()
1880 static void ntb_async_tx(struct ntb_transport_qp *qp, in ntb_async_tx() argument
1884 struct dma_chan *chan = qp->tx_dma_chan; in ntb_async_tx()
1888 entry->tx_index = qp->tx_index; in ntb_async_tx()
1889 offset = qp->tx_mw + qp->tx_max_frame * entry->tx_index; in ntb_async_tx()
1890 hdr = offset + qp->tx_max_frame - sizeof(struct ntb_payload_header); in ntb_async_tx()
1894 iowrite32((u32)qp->tx_pkts, &hdr->ver); in ntb_async_tx()
1902 res = ntb_async_tx_submit(qp, entry); in ntb_async_tx()
1907 qp->tx_async++; in ntb_async_tx()
1913 qp->tx_memcpy++; in ntb_async_tx()
1916 static int ntb_process_tx(struct ntb_transport_qp *qp, in ntb_process_tx() argument
1919 if (!ntb_transport_tx_free_entry(qp)) { in ntb_process_tx()
1920 qp->tx_ring_full++; in ntb_process_tx()
1924 if (entry->len > qp->tx_max_frame - sizeof(struct ntb_payload_header)) { in ntb_process_tx()
1925 if (qp->tx_handler) in ntb_process_tx()
1926 qp->tx_handler(qp, qp->cb_data, NULL, -EIO); in ntb_process_tx()
1928 ntb_list_add(&qp->ntb_tx_free_q_lock, &entry->entry, in ntb_process_tx()
1929 &qp->tx_free_q); in ntb_process_tx()
1933 ntb_async_tx(qp, entry); in ntb_process_tx()
1935 qp->tx_index++; in ntb_process_tx()
1936 qp->tx_index %= qp->tx_max_entry; in ntb_process_tx()
1938 qp->tx_pkts++; in ntb_process_tx()
1943 static void ntb_send_link_down(struct ntb_transport_qp *qp) in ntb_send_link_down() argument
1945 struct pci_dev *pdev = qp->ndev->pdev; in ntb_send_link_down()
1949 if (!qp->link_is_up) in ntb_send_link_down()
1952 dev_info(&pdev->dev, "qp %d: Send Link Down\n", qp->qp_num); in ntb_send_link_down()
1955 entry = ntb_list_rm(&qp->ntb_tx_free_q_lock, &qp->tx_free_q); in ntb_send_link_down()
1969 rc = ntb_process_tx(qp, entry); in ntb_send_link_down()
1971 dev_err(&pdev->dev, "ntb: QP%d unable to send linkdown msg\n", in ntb_send_link_down()
1972 qp->qp_num); in ntb_send_link_down()
1974 ntb_qp_link_down_reset(qp); in ntb_send_link_down()
2004 struct ntb_transport_qp *qp; in ntb_transport_create_queue() local
2024 qp = &nt->qp_vec[free_queue]; in ntb_transport_create_queue()
2025 qp_bit = BIT_ULL(qp->qp_num); in ntb_transport_create_queue()
2029 qp->cb_data = data; in ntb_transport_create_queue()
2030 qp->rx_handler = handlers->rx_handler; in ntb_transport_create_queue()
2031 qp->tx_handler = handlers->tx_handler; in ntb_transport_create_queue()
2032 qp->event_handler = handlers->event_handler; in ntb_transport_create_queue()
2038 qp->tx_dma_chan = in ntb_transport_create_queue()
2041 if (!qp->tx_dma_chan) in ntb_transport_create_queue()
2044 qp->rx_dma_chan = in ntb_transport_create_queue()
2047 if (!qp->rx_dma_chan) in ntb_transport_create_queue()
2050 qp->tx_dma_chan = NULL; in ntb_transport_create_queue()
2051 qp->rx_dma_chan = NULL; in ntb_transport_create_queue()
2054 qp->tx_mw_dma_addr = 0; in ntb_transport_create_queue()
2055 if (qp->tx_dma_chan) { in ntb_transport_create_queue()
2056 qp->tx_mw_dma_addr = in ntb_transport_create_queue()
2057 dma_map_resource(qp->tx_dma_chan->device->dev, in ntb_transport_create_queue()
2058 qp->tx_mw_phys, qp->tx_mw_size, in ntb_transport_create_queue()
2060 if (dma_mapping_error(qp->tx_dma_chan->device->dev, in ntb_transport_create_queue()
2061 qp->tx_mw_dma_addr)) { in ntb_transport_create_queue()
2062 qp->tx_mw_dma_addr = 0; in ntb_transport_create_queue()
2068 qp->tx_dma_chan ? "DMA" : "CPU"); in ntb_transport_create_queue()
2071 qp->rx_dma_chan ? "DMA" : "CPU"); in ntb_transport_create_queue()
2078 entry->qp = qp; in ntb_transport_create_queue()
2079 ntb_list_add(&qp->ntb_rx_q_lock, &entry->entry, in ntb_transport_create_queue()
2080 &qp->rx_free_q); in ntb_transport_create_queue()
2082 qp->rx_alloc_entry = NTB_QP_DEF_NUM_ENTRIES; in ntb_transport_create_queue()
2084 for (i = 0; i < qp->tx_max_entry; i++) { in ntb_transport_create_queue()
2089 entry->qp = qp; in ntb_transport_create_queue()
2090 ntb_list_add(&qp->ntb_tx_free_q_lock, &entry->entry, in ntb_transport_create_queue()
2091 &qp->tx_free_q); in ntb_transport_create_queue()
2094 ntb_db_clear(qp->ndev, qp_bit); in ntb_transport_create_queue()
2095 ntb_db_clear_mask(qp->ndev, qp_bit); in ntb_transport_create_queue()
2097 dev_info(&pdev->dev, "NTB Transport QP %d created\n", qp->qp_num); in ntb_transport_create_queue()
2099 return qp; in ntb_transport_create_queue()
2102 while ((entry = ntb_list_rm(&qp->ntb_tx_free_q_lock, &qp->tx_free_q))) in ntb_transport_create_queue()
2105 qp->rx_alloc_entry = 0; in ntb_transport_create_queue()
2106 while ((entry = ntb_list_rm(&qp->ntb_rx_q_lock, &qp->rx_free_q))) in ntb_transport_create_queue()
2108 if (qp->tx_mw_dma_addr) in ntb_transport_create_queue()
2109 dma_unmap_resource(qp->tx_dma_chan->device->dev, in ntb_transport_create_queue()
2110 qp->tx_mw_dma_addr, qp->tx_mw_size, in ntb_transport_create_queue()
2112 if (qp->tx_dma_chan) in ntb_transport_create_queue()
2113 dma_release_channel(qp->tx_dma_chan); in ntb_transport_create_queue()
2114 if (qp->rx_dma_chan) in ntb_transport_create_queue()
2115 dma_release_channel(qp->rx_dma_chan); in ntb_transport_create_queue()
2124 * @qp: NTB queue to be freed
2128 void ntb_transport_free_queue(struct ntb_transport_qp *qp) in ntb_transport_free_queue() argument
2134 if (!qp) in ntb_transport_free_queue()
2137 pdev = qp->ndev->pdev; in ntb_transport_free_queue()
2139 qp->active = false; in ntb_transport_free_queue()
2141 if (qp->tx_dma_chan) { in ntb_transport_free_queue()
2142 struct dma_chan *chan = qp->tx_dma_chan; in ntb_transport_free_queue()
2146 qp->tx_dma_chan = NULL; in ntb_transport_free_queue()
2151 dma_sync_wait(chan, qp->last_cookie); in ntb_transport_free_queue()
2155 qp->tx_mw_dma_addr, qp->tx_mw_size, in ntb_transport_free_queue()
2161 if (qp->rx_dma_chan) { in ntb_transport_free_queue()
2162 struct dma_chan *chan = qp->rx_dma_chan; in ntb_transport_free_queue()
2166 qp->rx_dma_chan = NULL; in ntb_transport_free_queue()
2171 dma_sync_wait(chan, qp->last_cookie); in ntb_transport_free_queue()
2176 qp_bit = BIT_ULL(qp->qp_num); in ntb_transport_free_queue()
2178 ntb_db_set_mask(qp->ndev, qp_bit); in ntb_transport_free_queue()
2179 tasklet_kill(&qp->rxc_db_work); in ntb_transport_free_queue()
2181 cancel_delayed_work_sync(&qp->link_work); in ntb_transport_free_queue()
2183 qp->cb_data = NULL; in ntb_transport_free_queue()
2184 qp->rx_handler = NULL; in ntb_transport_free_queue()
2185 qp->tx_handler = NULL; in ntb_transport_free_queue()
2186 qp->event_handler = NULL; in ntb_transport_free_queue()
2188 while ((entry = ntb_list_rm(&qp->ntb_rx_q_lock, &qp->rx_free_q))) in ntb_transport_free_queue()
2191 while ((entry = ntb_list_rm(&qp->ntb_rx_q_lock, &qp->rx_pend_q))) { in ntb_transport_free_queue()
2196 while ((entry = ntb_list_rm(&qp->ntb_rx_q_lock, &qp->rx_post_q))) { in ntb_transport_free_queue()
2201 while ((entry = ntb_list_rm(&qp->ntb_tx_free_q_lock, &qp->tx_free_q))) in ntb_transport_free_queue()
2204 qp->transport->qp_bitmap_free |= qp_bit; in ntb_transport_free_queue()
2206 dev_info(&pdev->dev, "NTB Transport QP %d freed\n", qp->qp_num); in ntb_transport_free_queue()
2212 * @qp: NTB queue to be freed
2216 * shutdown of qp.
2220 void *ntb_transport_rx_remove(struct ntb_transport_qp *qp, unsigned int *len) in ntb_transport_rx_remove() argument
2225 if (!qp || qp->client_ready) in ntb_transport_rx_remove()
2228 entry = ntb_list_rm(&qp->ntb_rx_q_lock, &qp->rx_pend_q); in ntb_transport_rx_remove()
2235 ntb_list_add(&qp->ntb_rx_q_lock, &entry->entry, &qp->rx_free_q); in ntb_transport_rx_remove()
2243 * @qp: NTB transport layer queue the entry is to be enqueued on
2253 int ntb_transport_rx_enqueue(struct ntb_transport_qp *qp, void *cb, void *data, in ntb_transport_rx_enqueue() argument
2258 if (!qp) in ntb_transport_rx_enqueue()
2261 entry = ntb_list_rm(&qp->ntb_rx_q_lock, &qp->rx_free_q); in ntb_transport_rx_enqueue()
2273 ntb_list_add(&qp->ntb_rx_q_lock, &entry->entry, &qp->rx_pend_q); in ntb_transport_rx_enqueue()
2275 if (qp->active) in ntb_transport_rx_enqueue()
2276 tasklet_schedule(&qp->rxc_db_work); in ntb_transport_rx_enqueue()
2284 * @qp: NTB transport layer queue the entry is to be enqueued on
2291 * serialize access to the qp.
2295 int ntb_transport_tx_enqueue(struct ntb_transport_qp *qp, void *cb, void *data, in ntb_transport_tx_enqueue() argument
2301 if (!qp || !len) in ntb_transport_tx_enqueue()
2304 /* If the qp link is down already, just ignore. */ in ntb_transport_tx_enqueue()
2305 if (!qp->link_is_up) in ntb_transport_tx_enqueue()
2308 entry = ntb_list_rm(&qp->ntb_tx_free_q_lock, &qp->tx_free_q); in ntb_transport_tx_enqueue()
2310 qp->tx_err_no_buf++; in ntb_transport_tx_enqueue()
2322 rc = ntb_process_tx(qp, entry); in ntb_transport_tx_enqueue()
2324 ntb_list_add(&qp->ntb_tx_free_q_lock, &entry->entry, in ntb_transport_tx_enqueue()
2325 &qp->tx_free_q); in ntb_transport_tx_enqueue()
2333 * @qp: NTB transport layer queue to be enabled
2337 void ntb_transport_link_up(struct ntb_transport_qp *qp) in ntb_transport_link_up() argument
2339 if (!qp) in ntb_transport_link_up()
2342 qp->client_ready = true; in ntb_transport_link_up()
2344 if (qp->transport->link_is_up) in ntb_transport_link_up()
2345 schedule_delayed_work(&qp->link_work, 0); in ntb_transport_link_up()
2351 * @qp: NTB transport layer queue to be disabled
2357 void ntb_transport_link_down(struct ntb_transport_qp *qp) in ntb_transport_link_down() argument
2361 if (!qp) in ntb_transport_link_down()
2364 qp->client_ready = false; in ntb_transport_link_down()
2366 val = ntb_spad_read(qp->ndev, QP_LINKS); in ntb_transport_link_down()
2368 ntb_peer_spad_write(qp->ndev, PIDX, QP_LINKS, val & ~BIT(qp->qp_num)); in ntb_transport_link_down()
2370 if (qp->link_is_up) in ntb_transport_link_down()
2371 ntb_send_link_down(qp); in ntb_transport_link_down()
2373 cancel_delayed_work_sync(&qp->link_work); in ntb_transport_link_down()
2379 * @qp: NTB transport layer queue to be queried
2385 bool ntb_transport_link_query(struct ntb_transport_qp *qp) in ntb_transport_link_query() argument
2387 if (!qp) in ntb_transport_link_query()
2390 return qp->link_is_up; in ntb_transport_link_query()
2395 * ntb_transport_qp_num - Query the qp number
2396 * @qp: NTB transport layer queue to be queried
2398 * Query qp number of the NTB transport queue
2400 * RETURNS: a zero based number specifying the qp number
2402 unsigned char ntb_transport_qp_num(struct ntb_transport_qp *qp) in ntb_transport_qp_num() argument
2404 if (!qp) in ntb_transport_qp_num()
2407 return qp->qp_num; in ntb_transport_qp_num()
2412 * ntb_transport_max_size - Query the max payload size of a qp
2413 * @qp: NTB transport layer queue to be queried
2415 * Query the maximum payload size permissible on the given qp
2417 * RETURNS: the max payload size of a qp
2419 unsigned int ntb_transport_max_size(struct ntb_transport_qp *qp) in ntb_transport_max_size() argument
2425 if (!qp) in ntb_transport_max_size()
2428 rx_chan = qp->rx_dma_chan; in ntb_transport_max_size()
2429 tx_chan = qp->tx_dma_chan; in ntb_transport_max_size()
2435 max_size = qp->tx_max_frame - sizeof(struct ntb_payload_header); in ntb_transport_max_size()
2442 unsigned int ntb_transport_tx_free_entry(struct ntb_transport_qp *qp) in ntb_transport_tx_free_entry() argument
2444 unsigned int head = qp->tx_index; in ntb_transport_tx_free_entry()
2445 unsigned int tail = qp->remote_rx_info->entry; in ntb_transport_tx_free_entry()
2447 return tail >= head ? tail - head : qp->tx_max_entry + tail - head; in ntb_transport_tx_free_entry()
2454 struct ntb_transport_qp *qp; in ntb_transport_doorbell_callback() local
2468 qp = &nt->qp_vec[qp_num]; in ntb_transport_doorbell_callback()
2470 if (qp->active) in ntb_transport_doorbell_callback()
2471 tasklet_schedule(&qp->rxc_db_work); in ntb_transport_doorbell_callback()