127 lines
4.0 KiB
C
127 lines
4.0 KiB
C
/*
|
|
* Copyright(c) 2016 - 2018 Intel Corporation.
|
|
*
|
|
* This file is provided under a dual BSD/GPLv2 license. When using or
|
|
* redistributing this file, you may do so under either license.
|
|
*
|
|
* GPL LICENSE SUMMARY
|
|
*
|
|
* This program is free software; you can redistribute it and/or modify
|
|
* it under the terms of version 2 of the GNU General Public License 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.
|
|
*
|
|
* BSD LICENSE
|
|
*
|
|
* Redistribution and use in source and binary forms, with or without
|
|
* modification, are permitted provided that the following conditions
|
|
* are met:
|
|
*
|
|
* - Redistributions of source code must retain the above copyright
|
|
* notice, this list of conditions and the following disclaimer.
|
|
* - Redistributions in binary form must reproduce the above copyright
|
|
* notice, this list of conditions and the following disclaimer in
|
|
* the documentation and/or other materials provided with the
|
|
* distribution.
|
|
* - Neither the name of Intel Corporation nor the names of its
|
|
* contributors may be used to endorse or promote products derived
|
|
* from this software without specific prior written permission.
|
|
*
|
|
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
|
|
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
|
|
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
|
|
* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
|
|
* OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
|
|
* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
|
|
* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
|
|
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
|
|
* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
|
|
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
|
|
* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
|
|
*
|
|
*/
|
|
|
|
#ifndef HFI1_VERBS_TXREQ_H
|
|
#define HFI1_VERBS_TXREQ_H
|
|
|
|
#include <linux/types.h>
|
|
#include <linux/slab.h>
|
|
|
|
#include "verbs.h"
|
|
#include "sdma_txreq.h"
|
|
#include "iowait.h"
|
|
|
|
struct verbs_txreq {
|
|
struct hfi1_sdma_header phdr;
|
|
struct sdma_txreq txreq;
|
|
struct rvt_qp *qp;
|
|
struct rvt_swqe *wqe;
|
|
struct rvt_mregion *mr;
|
|
struct rvt_sge_state *ss;
|
|
struct sdma_engine *sde;
|
|
struct send_context *psc;
|
|
u16 hdr_dwords;
|
|
u16 s_cur_size;
|
|
};
|
|
|
|
struct hfi1_ibdev;
|
|
struct verbs_txreq *__get_txreq(struct hfi1_ibdev *dev,
|
|
struct rvt_qp *qp);
|
|
|
|
#define VERBS_TXREQ_GFP (GFP_ATOMIC | __GFP_NOWARN)
|
|
static inline struct verbs_txreq *get_txreq(struct hfi1_ibdev *dev,
|
|
struct rvt_qp *qp)
|
|
__must_hold(&qp->slock)
|
|
{
|
|
struct verbs_txreq *tx;
|
|
struct hfi1_qp_priv *priv = qp->priv;
|
|
|
|
tx = kmem_cache_alloc(dev->verbs_txreq_cache, VERBS_TXREQ_GFP);
|
|
if (unlikely(!tx)) {
|
|
/* call slow path to get the lock */
|
|
tx = __get_txreq(dev, qp);
|
|
if (!tx)
|
|
return tx;
|
|
}
|
|
tx->qp = qp;
|
|
tx->mr = NULL;
|
|
tx->sde = priv->s_sde;
|
|
tx->psc = priv->s_sendcontext;
|
|
/* so that we can test if the sdma descriptors are there */
|
|
tx->txreq.num_desc = 0;
|
|
/* Set the header type */
|
|
tx->phdr.hdr.hdr_type = priv->hdr_type;
|
|
tx->txreq.flags = 0;
|
|
return tx;
|
|
}
|
|
|
|
static inline struct sdma_txreq *get_sdma_txreq(struct verbs_txreq *tx)
|
|
{
|
|
return &tx->txreq;
|
|
}
|
|
|
|
static inline struct verbs_txreq *get_waiting_verbs_txreq(struct iowait_work *w)
|
|
{
|
|
struct sdma_txreq *stx;
|
|
|
|
stx = iowait_get_txhead(w);
|
|
if (stx)
|
|
return container_of(stx, struct verbs_txreq, txreq);
|
|
return NULL;
|
|
}
|
|
|
|
static inline bool verbs_txreq_queued(struct iowait_work *w)
|
|
{
|
|
return iowait_packet_queued(w);
|
|
}
|
|
|
|
void hfi1_put_txreq(struct verbs_txreq *tx);
|
|
int verbs_txreq_init(struct hfi1_ibdev *dev);
|
|
void verbs_txreq_exit(struct hfi1_ibdev *dev);
|
|
|
|
#endif /* HFI1_VERBS_TXREQ_H */
|