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path: root/drivers/misc/mic/scif/scif_nm.c
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Diffstat (limited to 'drivers/misc/mic/scif/scif_nm.c')
-rw-r--r--drivers/misc/mic/scif/scif_nm.c229
1 files changed, 0 insertions, 229 deletions
diff --git a/drivers/misc/mic/scif/scif_nm.c b/drivers/misc/mic/scif/scif_nm.c
deleted file mode 100644
index c4d9422082b7..000000000000
--- a/drivers/misc/mic/scif/scif_nm.c
+++ /dev/null
@@ -1,229 +0,0 @@
-// SPDX-License-Identifier: GPL-2.0-only
-/*
- * Intel MIC Platform Software Stack (MPSS)
- *
- * Copyright(c) 2014 Intel Corporation.
- *
- * Intel SCIF driver.
- */
-#include "scif_peer_bus.h"
-
-#include "scif_main.h"
-#include "scif_map.h"
-
-/**
- * scif_invalidate_ep() - Set state for all connected endpoints
- * to disconnected and wake up all send/recv waitqueues
- *
- * @node: Node to invalidate
- */
-static void scif_invalidate_ep(int node)
-{
- struct scif_endpt *ep;
- struct list_head *pos, *tmpq;
-
- flush_work(&scif_info.conn_work);
- mutex_lock(&scif_info.connlock);
- list_for_each_safe(pos, tmpq, &scif_info.disconnected) {
- ep = list_entry(pos, struct scif_endpt, list);
- if (ep->remote_dev->node == node) {
- scif_unmap_all_windows(ep);
- spin_lock(&ep->lock);
- scif_cleanup_ep_qp(ep);
- spin_unlock(&ep->lock);
- }
- }
- list_for_each_safe(pos, tmpq, &scif_info.connected) {
- ep = list_entry(pos, struct scif_endpt, list);
- if (ep->remote_dev->node == node) {
- list_del(pos);
- spin_lock(&ep->lock);
- ep->state = SCIFEP_DISCONNECTED;
- list_add_tail(&ep->list, &scif_info.disconnected);
- scif_cleanup_ep_qp(ep);
- wake_up_interruptible(&ep->sendwq);
- wake_up_interruptible(&ep->recvwq);
- spin_unlock(&ep->lock);
- scif_unmap_all_windows(ep);
- }
- }
- mutex_unlock(&scif_info.connlock);
-}
-
-void scif_free_qp(struct scif_dev *scifdev)
-{
- struct scif_qp *qp = scifdev->qpairs;
-
- if (!qp)
- return;
- scif_unmap_single(qp->local_buf, scifdev, qp->inbound_q.size);
- kfree(qp->inbound_q.rb_base);
- scif_unmap_single(qp->local_qp, scifdev, sizeof(struct scif_qp));
- kfree(scifdev->qpairs);
- scifdev->qpairs = NULL;
-}
-
-static void scif_cleanup_qp(struct scif_dev *dev)
-{
- struct scif_qp *qp = &dev->qpairs[0];
-
- if (!qp)
- return;
- scif_iounmap((void *)qp->remote_qp, sizeof(struct scif_qp), dev);
- scif_iounmap((void *)qp->outbound_q.rb_base,
- sizeof(struct scif_qp), dev);
- qp->remote_qp = NULL;
- qp->local_write = 0;
- qp->inbound_q.current_write_offset = 0;
- qp->inbound_q.current_read_offset = 0;
- if (scifdev_is_p2p(dev))
- scif_free_qp(dev);
-}
-
-void scif_send_acks(struct scif_dev *dev)
-{
- struct scifmsg msg;
-
- if (dev->node_remove_ack_pending) {
- msg.uop = SCIF_NODE_REMOVE_ACK;
- msg.src.node = scif_info.nodeid;
- msg.dst.node = SCIF_MGMT_NODE;
- msg.payload[0] = dev->node;
- scif_nodeqp_send(&scif_dev[SCIF_MGMT_NODE], &msg);
- dev->node_remove_ack_pending = false;
- }
- if (dev->exit_ack_pending) {
- msg.uop = SCIF_EXIT_ACK;
- msg.src.node = scif_info.nodeid;
- msg.dst.node = dev->node;
- scif_nodeqp_send(dev, &msg);
- dev->exit_ack_pending = false;
- }
-}
-
-/**
- * scif_cleanup_scifdev - Uninitialize SCIF data structures for remote
- * SCIF device.
- * @dev: Remote SCIF device.
- */
-void scif_cleanup_scifdev(struct scif_dev *dev)
-{
- struct scif_hw_dev *sdev = dev->sdev;
-
- if (!dev->sdev)
- return;
- if (scifdev_is_p2p(dev)) {
- if (dev->cookie) {
- sdev->hw_ops->free_irq(sdev, dev->cookie, dev);
- dev->cookie = NULL;
- }
- scif_destroy_intr_wq(dev);
- }
- flush_work(&scif_info.misc_work);
- scif_destroy_p2p(dev);
- scif_invalidate_ep(dev->node);
- scif_zap_mmaps(dev->node);
- scif_cleanup_rma_for_zombies(dev->node);
- flush_work(&scif_info.misc_work);
- scif_send_acks(dev);
- if (!dev->node && scif_info.card_initiated_exit) {
- /*
- * Send an SCIF_EXIT message which is the last message from MIC
- * to the Host and wait for a SCIF_EXIT_ACK
- */
- scif_send_exit(dev);
- scif_info.card_initiated_exit = false;
- }
- scif_cleanup_qp(dev);
-}
-
-/**
- * scif_remove_node
- *
- * @node: Node to remove
- */
-void scif_handle_remove_node(int node)
-{
- struct scif_dev *scifdev = &scif_dev[node];
-
- if (scif_peer_unregister_device(scifdev))
- scif_send_acks(scifdev);
-}
-
-static int scif_send_rmnode_msg(int node, int remove_node)
-{
- struct scifmsg notif_msg;
- struct scif_dev *dev = &scif_dev[node];
-
- notif_msg.uop = SCIF_NODE_REMOVE;
- notif_msg.src.node = scif_info.nodeid;
- notif_msg.dst.node = node;
- notif_msg.payload[0] = remove_node;
- return scif_nodeqp_send(dev, &notif_msg);
-}
-
-/**
- * scif_node_disconnect
- *
- * @node_id: source node id [in]
- * @mgmt_initiated: Disconnection initiated from the mgmt node
- *
- * Disconnect a node from the scif network.
- */
-void scif_disconnect_node(u32 node_id, bool mgmt_initiated)
-{
- int ret;
- int msg_cnt = 0;
- u32 i = 0;
- struct scif_dev *scifdev = &scif_dev[node_id];
-
- if (!node_id)
- return;
-
- atomic_set(&scifdev->disconn_rescnt, 0);
-
- /* Destroy p2p network */
- for (i = 1; i <= scif_info.maxid; i++) {
- if (i == node_id)
- continue;
- ret = scif_send_rmnode_msg(i, node_id);
- if (!ret)
- msg_cnt++;
- }
- /* Wait for the remote nodes to respond with SCIF_NODE_REMOVE_ACK */
- ret = wait_event_timeout(scifdev->disconn_wq,
- (atomic_read(&scifdev->disconn_rescnt)
- == msg_cnt), SCIF_NODE_ALIVE_TIMEOUT);
- /* Tell the card to clean up */
- if (mgmt_initiated && _scifdev_alive(scifdev))
- /*
- * Send an SCIF_EXIT message which is the last message from Host
- * to the MIC and wait for a SCIF_EXIT_ACK
- */
- scif_send_exit(scifdev);
- atomic_set(&scifdev->disconn_rescnt, 0);
- /* Tell the mgmt node to clean up */
- ret = scif_send_rmnode_msg(SCIF_MGMT_NODE, node_id);
- if (!ret)
- /* Wait for mgmt node to respond with SCIF_NODE_REMOVE_ACK */
- wait_event_timeout(scifdev->disconn_wq,
- (atomic_read(&scifdev->disconn_rescnt) == 1),
- SCIF_NODE_ALIVE_TIMEOUT);
-}
-
-void scif_get_node_info(void)
-{
- struct scifmsg msg;
- DECLARE_COMPLETION_ONSTACK(node_info);
-
- msg.uop = SCIF_GET_NODE_INFO;
- msg.src.node = scif_info.nodeid;
- msg.dst.node = SCIF_MGMT_NODE;
- msg.payload[3] = (u64)&node_info;
-
- if ((scif_nodeqp_send(&scif_dev[SCIF_MGMT_NODE], &msg)))
- return;
-
- /* Wait for a response with SCIF_GET_NODE_INFO */
- wait_for_completion(&node_info);
-}
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