mirror of
https://github.com/AuxXxilium/linux_dsm_epyc7002.git
synced 2024-12-28 11:18:45 +07:00
93 lines
2.3 KiB
C
93 lines
2.3 KiB
C
|
/*
|
||
|
|
* Intel MIC Platform Software Stack (MPSS)
|
||
|
|
*
|
||
|
|
* Copyright(c) 2014 Intel Corporation.
|
||
|
|
*
|
||
|
|
* This program is free software; you can redistribute it and/or modify
|
||
|
|
* it under the terms of the GNU General Public License, version 2, as
|
||
|
|
* published by the Free Software Foundation.
|
||
|
|
*
|
||
|
|
* This program is distributed in the hope that it will be useful, but
|
||
|
|
* WITHOUT ANY WARRANTY; without even the implied warranty of
|
||
|
|
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
|
||
|
|
* General Public License for more details.
|
||
|
|
*
|
||
|
|
* Intel SCIF driver.
|
||
|
|
*
|
||
|
|
*/
|
||
|
|
#include "scif_main.h"
|
||
|
|
#include "scif_map.h"
|
||
|
|
|
||
|
|
void scif_cleanup_ep_qp(struct scif_endpt *ep)
|
||
|
|
{
|
||
|
|
struct scif_qp *qp = ep->qp_info.qp;
|
||
|
|
|
||
|
|
if (qp->outbound_q.rb_base) {
|
||
|
|
scif_iounmap((void *)qp->outbound_q.rb_base,
|
||
|
|
qp->outbound_q.size, ep->remote_dev);
|
||
|
|
qp->outbound_q.rb_base = NULL;
|
||
|
|
}
|
||
|
|
if (qp->remote_qp) {
|
||
|
|
scif_iounmap((void *)qp->remote_qp,
|
||
|
|
sizeof(struct scif_qp), ep->remote_dev);
|
||
|
|
qp->remote_qp = NULL;
|
||
|
|
}
|
||
|
|
if (qp->local_qp) {
|
||
|
|
scif_unmap_single(qp->local_qp, ep->remote_dev,
|
||
|
|
sizeof(struct scif_qp));
|
||
|
|
qp->local_qp = 0x0;
|
||
|
|
}
|
||
|
|
if (qp->local_buf) {
|
||
|
|
scif_unmap_single(qp->local_buf, ep->remote_dev,
|
||
|
|
SCIF_ENDPT_QP_SIZE);
|
||
|
|
qp->local_buf = 0;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
void scif_teardown_ep(void *endpt)
|
||
|
|
{
|
||
|
|
struct scif_endpt *ep = endpt;
|
||
|
|
struct scif_qp *qp = ep->qp_info.qp;
|
||
|
|
|
||
|
|
if (qp) {
|
||
|
|
spin_lock(&ep->lock);
|
||
|
|
scif_cleanup_ep_qp(ep);
|
||
|
|
spin_unlock(&ep->lock);
|
||
|
|
kfree(qp->inbound_q.rb_base);
|
||
|
|
kfree(qp);
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
/*
|
||
|
|
* Enqueue the endpoint to the zombie list for cleanup.
|
||
|
|
* The endpoint should not be accessed once this API returns.
|
||
|
|
*/
|
||
|
|
void scif_add_epd_to_zombie_list(struct scif_endpt *ep, bool eplock_held)
|
||
|
|
{
|
||
|
|
if (!eplock_held)
|
||
|
|
spin_lock(&scif_info.eplock);
|
||
|
|
spin_lock(&ep->lock);
|
||
|
|
ep->state = SCIFEP_ZOMBIE;
|
||
|
|
spin_unlock(&ep->lock);
|
||
|
|
list_add_tail(&ep->list, &scif_info.zombie);
|
||
|
|
scif_info.nr_zombies++;
|
||
|
|
if (!eplock_held)
|
||
|
|
spin_unlock(&scif_info.eplock);
|
||
|
|
schedule_work(&scif_info.misc_work);
|
||
|
|
}
|
||
|
|
|
||
|
|
void scif_cleanup_zombie_epd(void)
|
||
|
|
{
|
||
|
|
struct list_head *pos, *tmpq;
|
||
|
|
struct scif_endpt *ep;
|
||
|
|
|
||
|
|
spin_lock(&scif_info.eplock);
|
||
|
|
list_for_each_safe(pos, tmpq, &scif_info.zombie) {
|
||
|
|
ep = list_entry(pos, struct scif_endpt, list);
|
||
|
|
list_del(pos);
|
||
|
|
scif_info.nr_zombies--;
|
||
|
|
kfree(ep);
|
||
|
|
}
|
||
|
|
spin_unlock(&scif_info.eplock);
|
||
|
|
}
|