hw/idt/ntb_hw_idt.c

533 	/* It's useless to have this driver loaded if there is no any peer */
535 		dev_warn(&ndev->ntb.pdev->dev, "No active peer found\n");
556  * idt_ntb_peer_port_count() - get the number of peer ports
559  * Return the count of detected peer NT-functions.
561  * Return: number of peer ports
571  * idt_ntb_peer_port_number() - get peer port by given index
575  * Return: peer port or negative error
589  * idt_ntb_peer_port_idx() - get peer port index by given port number
596  * Return: peer NT-function port index or negative error
610  *    There is no any ready-to-use method to have peer ports notified if NTB
617  * state changes of peer ports.
630  * NOTE Since it's not possible to determine when all the NTB peer drivers are
823  * idt_ntb_peer_link_is_up() - test whether peer NTB link is up
849 	/* Check whether bus mastering is enabled on the peer port */
854 	/* Check if Completion TLPs translation is enabled on the peer port */
859 	/* Read Mapping table entry corresponding to the peer partition */
874  * Get the bitfield of NTB link states for all peer ports
900 	/* Collect all the peer ports link states into the bitfield */
1122  * Scan BAR setup registers of local and peer ports to determine the
1129 	struct idt_ntb_peer *peer;
1140 	/* Scan memory windows of the peer ports */
1142 		peer = &ndev->peers[pidx];
1143 		peer->mws = idt_scan_mws(ndev, peer->port, &peer->mw_cnt);
1144 		if (IS_ERR(peer->mws)) {
1146 				"Failed to scan mws of port %hhu", peer->port);
1147 			return PTR_ERR(peer->mws);
1162  * @pidx:	Port index of peer device.
1164  * The value is returned for the specified peer, so generally speaking it can
1183  * @pidx:	Port index of peer device.
1189  * The peer memory window parameters have already been determined, so just
1200 	struct idt_ntb_peer *peer;
1205 	peer = &ndev->peers[pidx];
1207 	if (widx < 0 || peer->mw_cnt <= widx)
1211 		*addr_align = peer->mws[widx].addr_align;
1214 		*size_align = peer->mws[widx].size_align;
1217 		*size_max = peer->mws[widx].size_max;
1276  * @pidx:	Port index of peer device the translation address received from.
1349  * @pidx:	Port index of peer device.
1406  * It can lead to situations when client driver sets some peer doorbell bits
1550  * idt_ntb_peer_db_set() - set bits in the peer doorbell register
1555  * IDT PCIe-switches exposes local outbound doorbell register to change peer
1576  * even more than one peer inbound message registers by setting global
1669  * incoming data and failures in case if peer message register isn't freed.
1744  * @pidx:	OUT - Port index of peer device a message retrieved from
1778  * @pidx:	Port index of peer device a message being sent to
1782  * Just try to send data to a peer. Message status register should be
2425 			"Inbound Memory Windows for peer %hhu (Port %hhu):\n",
2483 			"\t%hhu. 0x%08x from peer %d (Port %hhu)\n",