mirror of https://github.com/Qortal/Brooklyn
You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
126 lines
4.0 KiB
126 lines
4.0 KiB
/* |
|
* 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 */
|
|
|