164 lines
5.9 KiB
C
164 lines
5.9 KiB
C
#ifndef _QP_H
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#define _QP_H
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/*
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* Copyright(c) 2015 - 2018 Intel Corporation.
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*
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* This file is provided under a dual BSD/GPLv2 license. When using or
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* redistributing this file, you may do so under either license.
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*
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* GPL LICENSE SUMMARY
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of version 2 of the GNU General Public License as
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* published by the Free Software Foundation.
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*
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* This program is distributed in the hope that it will be useful, but
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* WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* General Public License for more details.
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*
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* BSD LICENSE
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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*
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* - Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* - Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in
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* the documentation and/or other materials provided with the
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* distribution.
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* - Neither the name of Intel Corporation nor the names of its
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* contributors may be used to endorse or promote products derived
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* from this software without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
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* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
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* OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
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* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*
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*/
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#include <linux/hash.h>
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#include <rdma/rdmavt_qp.h>
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#include "verbs.h"
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#include "sdma.h"
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#include "verbs_txreq.h"
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extern unsigned int hfi1_qp_table_size;
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extern const struct rvt_operation_params hfi1_post_parms[];
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/*
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* Driver specific s_flags starting at bit 31 down to HFI1_S_MIN_BIT_MASK
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*
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* HFI1_S_AHG_VALID - ahg header valid on chip
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* HFI1_S_AHG_CLEAR - have send engine clear ahg state
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* HFI1_S_WAIT_PIO_DRAIN - qp waiting for PIOs to drain
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* HFI1_S_WAIT_TID_SPACE - a QP is waiting for TID resource
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* HFI1_S_WAIT_TID_RESP - waiting for a TID RDMA WRITE response
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* HFI1_S_WAIT_HALT - halt the first leg send engine
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* HFI1_S_MIN_BIT_MASK - the lowest bit that can be used by hfi1
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*/
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#define HFI1_S_AHG_VALID 0x80000000
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#define HFI1_S_AHG_CLEAR 0x40000000
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#define HFI1_S_WAIT_PIO_DRAIN 0x20000000
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#define HFI1_S_WAIT_TID_SPACE 0x10000000
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#define HFI1_S_WAIT_TID_RESP 0x08000000
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#define HFI1_S_WAIT_HALT 0x04000000
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#define HFI1_S_MIN_BIT_MASK 0x01000000
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/*
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* overload wait defines
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*/
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#define HFI1_S_ANY_WAIT_IO (RVT_S_ANY_WAIT_IO | HFI1_S_WAIT_PIO_DRAIN)
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#define HFI1_S_ANY_WAIT (HFI1_S_ANY_WAIT_IO | RVT_S_ANY_WAIT_SEND)
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#define HFI1_S_ANY_TID_WAIT_SEND (RVT_S_WAIT_SSN_CREDIT | RVT_S_WAIT_DMA)
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/*
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* Send if not busy or waiting for I/O and either
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* a RC response is pending or we can process send work requests.
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*/
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static inline int hfi1_send_ok(struct rvt_qp *qp)
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{
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struct hfi1_qp_priv *priv = qp->priv;
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return !(qp->s_flags & (RVT_S_BUSY | HFI1_S_ANY_WAIT_IO)) &&
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(verbs_txreq_queued(iowait_get_ib_work(&priv->s_iowait)) ||
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(qp->s_flags & RVT_S_RESP_PENDING) ||
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!(qp->s_flags & RVT_S_ANY_WAIT_SEND));
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}
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/*
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* free_ahg - clear ahg from QP
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*/
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static inline void clear_ahg(struct rvt_qp *qp)
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{
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struct hfi1_qp_priv *priv = qp->priv;
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priv->s_ahg->ahgcount = 0;
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qp->s_flags &= ~(HFI1_S_AHG_VALID | HFI1_S_AHG_CLEAR);
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if (priv->s_sde && qp->s_ahgidx >= 0)
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sdma_ahg_free(priv->s_sde, qp->s_ahgidx);
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qp->s_ahgidx = -1;
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}
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/**
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* hfi1_create_qp - create a queue pair for a device
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* @ibpd: the protection domain who's device we create the queue pair for
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* @init_attr: the attributes of the queue pair
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* @udata: user data for libibverbs.so
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*
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* Returns the queue pair on success, otherwise returns an errno.
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*
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* Called by the ib_create_qp() core verbs function.
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*/
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struct ib_qp *hfi1_create_qp(struct ib_pd *ibpd,
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struct ib_qp_init_attr *init_attr,
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struct ib_udata *udata);
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/**
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* hfi1_qp_wakeup - wake up on the indicated event
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* @qp: the QP
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* @flag: flag the qp on which the qp is stalled
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*/
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void hfi1_qp_wakeup(struct rvt_qp *qp, u32 flag);
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struct sdma_engine *qp_to_sdma_engine(struct rvt_qp *qp, u8 sc5);
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struct send_context *qp_to_send_context(struct rvt_qp *qp, u8 sc5);
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void qp_iter_print(struct seq_file *s, struct rvt_qp_iter *iter);
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bool _hfi1_schedule_send(struct rvt_qp *qp);
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bool hfi1_schedule_send(struct rvt_qp *qp);
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void hfi1_migrate_qp(struct rvt_qp *qp);
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/*
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* Functions provided by hfi1 driver for rdmavt to use
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*/
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void *qp_priv_alloc(struct rvt_dev_info *rdi, struct rvt_qp *qp);
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void qp_priv_free(struct rvt_dev_info *rdi, struct rvt_qp *qp);
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unsigned free_all_qps(struct rvt_dev_info *rdi);
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void notify_qp_reset(struct rvt_qp *qp);
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int get_pmtu_from_attr(struct rvt_dev_info *rdi, struct rvt_qp *qp,
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struct ib_qp_attr *attr);
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void flush_qp_waiters(struct rvt_qp *qp);
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void notify_error_qp(struct rvt_qp *qp);
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void stop_send_queue(struct rvt_qp *qp);
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void quiesce_qp(struct rvt_qp *qp);
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u32 mtu_from_qp(struct rvt_dev_info *rdi, struct rvt_qp *qp, u32 pmtu);
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int mtu_to_path_mtu(u32 mtu);
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void hfi1_error_port_qps(struct hfi1_ibport *ibp, u8 sl);
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void hfi1_qp_unbusy(struct rvt_qp *qp, struct iowait_work *wait);
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#endif /* _QP_H */
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