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https://github.com/AuxXxilium/linux_dsm_epyc7002.git
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f988653a6b
Functions pvrdma_ah_attr_to_ib and ib_ah_attr_to_pvrdma have been renamed so they are in sync wit the rename of the ib_ah_attr structure Reviewed-by: Ira Weiny <ira.weiny@intel.com> Reviewed-by: Don Hiatt <don.hiatt@intel.com> Reviewed-by: Sean Hefty <sean.hefty@intel.com> Signed-off-by: Dasaratharaman Chandramouli <dasaratharaman.chandramouli@intel.com> Signed-off-by: Doug Ledford <dledford@redhat.com>
966 lines
26 KiB
C
966 lines
26 KiB
C
/*
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* Copyright (c) 2012-2016 VMware, Inc. All rights reserved.
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of EITHER the GNU General Public License
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* version 2 as published by the Free Software Foundation or the BSD
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* 2-Clause License. This program is distributed in the hope that it
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* will be useful, but WITHOUT ANY WARRANTY; WITHOUT EVEN THE IMPLIED
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* WARRANTY OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE.
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* See the GNU General Public License version 2 for more details at
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* http://www.gnu.org/licenses/old-licenses/gpl-2.0.en.html.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program available in the file COPYING in the main
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* directory of this source tree.
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*
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* The BSD 2-Clause License
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*
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* Redistribution and use in source and binary forms, with or
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* without modification, are permitted provided that the following
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* conditions are met:
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*
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* - Redistributions of source code must retain the above
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* copyright notice, this list of conditions and the following
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* disclaimer.
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*
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* - Redistributions in binary form must reproduce the above
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* copyright notice, this list of conditions and the following
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* disclaimer in the documentation and/or other materials
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* provided with the distribution.
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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
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* FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
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* COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT,
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* INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
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* (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
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* SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
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* STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
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* OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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#include <asm/page.h>
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#include <linux/io.h>
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#include <linux/wait.h>
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#include <rdma/ib_addr.h>
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#include <rdma/ib_smi.h>
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#include <rdma/ib_user_verbs.h>
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#include "pvrdma.h"
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static inline void get_cqs(struct pvrdma_qp *qp, struct pvrdma_cq **send_cq,
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struct pvrdma_cq **recv_cq)
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{
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*send_cq = to_vcq(qp->ibqp.send_cq);
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*recv_cq = to_vcq(qp->ibqp.recv_cq);
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}
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static void pvrdma_lock_cqs(struct pvrdma_cq *scq, struct pvrdma_cq *rcq,
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unsigned long *scq_flags,
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unsigned long *rcq_flags)
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__acquires(scq->cq_lock) __acquires(rcq->cq_lock)
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{
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if (scq == rcq) {
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spin_lock_irqsave(&scq->cq_lock, *scq_flags);
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__acquire(rcq->cq_lock);
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} else if (scq->cq_handle < rcq->cq_handle) {
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spin_lock_irqsave(&scq->cq_lock, *scq_flags);
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spin_lock_irqsave_nested(&rcq->cq_lock, *rcq_flags,
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SINGLE_DEPTH_NESTING);
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} else {
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spin_lock_irqsave(&rcq->cq_lock, *rcq_flags);
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spin_lock_irqsave_nested(&scq->cq_lock, *scq_flags,
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SINGLE_DEPTH_NESTING);
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}
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}
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static void pvrdma_unlock_cqs(struct pvrdma_cq *scq, struct pvrdma_cq *rcq,
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unsigned long *scq_flags,
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unsigned long *rcq_flags)
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__releases(scq->cq_lock) __releases(rcq->cq_lock)
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{
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if (scq == rcq) {
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__release(rcq->cq_lock);
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spin_unlock_irqrestore(&scq->cq_lock, *scq_flags);
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} else if (scq->cq_handle < rcq->cq_handle) {
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spin_unlock_irqrestore(&rcq->cq_lock, *rcq_flags);
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spin_unlock_irqrestore(&scq->cq_lock, *scq_flags);
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} else {
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spin_unlock_irqrestore(&scq->cq_lock, *scq_flags);
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spin_unlock_irqrestore(&rcq->cq_lock, *rcq_flags);
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}
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}
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static void pvrdma_reset_qp(struct pvrdma_qp *qp)
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{
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struct pvrdma_cq *scq, *rcq;
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unsigned long scq_flags, rcq_flags;
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/* Clean up cqes */
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get_cqs(qp, &scq, &rcq);
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pvrdma_lock_cqs(scq, rcq, &scq_flags, &rcq_flags);
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_pvrdma_flush_cqe(qp, scq);
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if (scq != rcq)
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_pvrdma_flush_cqe(qp, rcq);
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pvrdma_unlock_cqs(scq, rcq, &scq_flags, &rcq_flags);
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/*
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* Reset queuepair. The checks are because usermode queuepairs won't
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* have kernel ringstates.
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*/
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if (qp->rq.ring) {
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atomic_set(&qp->rq.ring->cons_head, 0);
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atomic_set(&qp->rq.ring->prod_tail, 0);
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}
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if (qp->sq.ring) {
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atomic_set(&qp->sq.ring->cons_head, 0);
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atomic_set(&qp->sq.ring->prod_tail, 0);
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}
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}
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static int pvrdma_set_rq_size(struct pvrdma_dev *dev,
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struct ib_qp_cap *req_cap,
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struct pvrdma_qp *qp)
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{
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if (req_cap->max_recv_wr > dev->dsr->caps.max_qp_wr ||
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req_cap->max_recv_sge > dev->dsr->caps.max_sge) {
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dev_warn(&dev->pdev->dev, "recv queue size invalid\n");
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return -EINVAL;
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}
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qp->rq.wqe_cnt = roundup_pow_of_two(max(1U, req_cap->max_recv_wr));
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qp->rq.max_sg = roundup_pow_of_two(max(1U, req_cap->max_recv_sge));
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/* Write back */
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req_cap->max_recv_wr = qp->rq.wqe_cnt;
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req_cap->max_recv_sge = qp->rq.max_sg;
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qp->rq.wqe_size = roundup_pow_of_two(sizeof(struct pvrdma_rq_wqe_hdr) +
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sizeof(struct pvrdma_sge) *
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qp->rq.max_sg);
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qp->npages_recv = (qp->rq.wqe_cnt * qp->rq.wqe_size + PAGE_SIZE - 1) /
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PAGE_SIZE;
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return 0;
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}
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static int pvrdma_set_sq_size(struct pvrdma_dev *dev, struct ib_qp_cap *req_cap,
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struct pvrdma_qp *qp)
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{
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if (req_cap->max_send_wr > dev->dsr->caps.max_qp_wr ||
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req_cap->max_send_sge > dev->dsr->caps.max_sge) {
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dev_warn(&dev->pdev->dev, "send queue size invalid\n");
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return -EINVAL;
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}
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qp->sq.wqe_cnt = roundup_pow_of_two(max(1U, req_cap->max_send_wr));
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qp->sq.max_sg = roundup_pow_of_two(max(1U, req_cap->max_send_sge));
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/* Write back */
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req_cap->max_send_wr = qp->sq.wqe_cnt;
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req_cap->max_send_sge = qp->sq.max_sg;
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qp->sq.wqe_size = roundup_pow_of_two(sizeof(struct pvrdma_sq_wqe_hdr) +
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sizeof(struct pvrdma_sge) *
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qp->sq.max_sg);
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/* Note: one extra page for the header. */
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qp->npages_send = PVRDMA_QP_NUM_HEADER_PAGES +
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(qp->sq.wqe_cnt * qp->sq.wqe_size + PAGE_SIZE - 1) /
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PAGE_SIZE;
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return 0;
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}
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/**
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* pvrdma_create_qp - create queue pair
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* @pd: protection domain
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* @init_attr: queue pair attributes
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* @udata: user data
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*
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* @return: the ib_qp pointer on success, otherwise returns an errno.
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*/
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struct ib_qp *pvrdma_create_qp(struct ib_pd *pd,
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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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struct pvrdma_qp *qp = NULL;
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struct pvrdma_dev *dev = to_vdev(pd->device);
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union pvrdma_cmd_req req;
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union pvrdma_cmd_resp rsp;
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struct pvrdma_cmd_create_qp *cmd = &req.create_qp;
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struct pvrdma_cmd_create_qp_resp *resp = &rsp.create_qp_resp;
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struct pvrdma_create_qp ucmd;
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unsigned long flags;
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int ret;
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if (init_attr->create_flags) {
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dev_warn(&dev->pdev->dev,
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"invalid create queuepair flags %#x\n",
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init_attr->create_flags);
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return ERR_PTR(-EINVAL);
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}
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if (init_attr->qp_type != IB_QPT_RC &&
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init_attr->qp_type != IB_QPT_UD &&
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init_attr->qp_type != IB_QPT_GSI) {
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dev_warn(&dev->pdev->dev, "queuepair type %d not supported\n",
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init_attr->qp_type);
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return ERR_PTR(-EINVAL);
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}
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if (!atomic_add_unless(&dev->num_qps, 1, dev->dsr->caps.max_qp))
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return ERR_PTR(-ENOMEM);
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switch (init_attr->qp_type) {
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case IB_QPT_GSI:
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if (init_attr->port_num == 0 ||
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init_attr->port_num > pd->device->phys_port_cnt ||
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udata) {
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dev_warn(&dev->pdev->dev, "invalid queuepair attrs\n");
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ret = -EINVAL;
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goto err_qp;
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}
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/* fall through */
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case IB_QPT_RC:
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case IB_QPT_UD:
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qp = kzalloc(sizeof(*qp), GFP_KERNEL);
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if (!qp) {
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ret = -ENOMEM;
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goto err_qp;
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}
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spin_lock_init(&qp->sq.lock);
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spin_lock_init(&qp->rq.lock);
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mutex_init(&qp->mutex);
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atomic_set(&qp->refcnt, 1);
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init_waitqueue_head(&qp->wait);
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qp->state = IB_QPS_RESET;
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if (pd->uobject && udata) {
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dev_dbg(&dev->pdev->dev,
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"create queuepair from user space\n");
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if (ib_copy_from_udata(&ucmd, udata, sizeof(ucmd))) {
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ret = -EFAULT;
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goto err_qp;
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}
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/* set qp->sq.wqe_cnt, shift, buf_size.. */
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qp->rumem = ib_umem_get(pd->uobject->context,
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ucmd.rbuf_addr,
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ucmd.rbuf_size, 0, 0);
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if (IS_ERR(qp->rumem)) {
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ret = PTR_ERR(qp->rumem);
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goto err_qp;
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}
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qp->sumem = ib_umem_get(pd->uobject->context,
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ucmd.sbuf_addr,
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ucmd.sbuf_size, 0, 0);
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if (IS_ERR(qp->sumem)) {
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ib_umem_release(qp->rumem);
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ret = PTR_ERR(qp->sumem);
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goto err_qp;
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}
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qp->npages_send = ib_umem_page_count(qp->sumem);
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qp->npages_recv = ib_umem_page_count(qp->rumem);
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qp->npages = qp->npages_send + qp->npages_recv;
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} else {
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qp->is_kernel = true;
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ret = pvrdma_set_sq_size(to_vdev(pd->device),
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&init_attr->cap, qp);
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if (ret)
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goto err_qp;
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ret = pvrdma_set_rq_size(to_vdev(pd->device),
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&init_attr->cap, qp);
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if (ret)
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goto err_qp;
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qp->npages = qp->npages_send + qp->npages_recv;
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/* Skip header page. */
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qp->sq.offset = PVRDMA_QP_NUM_HEADER_PAGES * PAGE_SIZE;
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/* Recv queue pages are after send pages. */
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qp->rq.offset = qp->npages_send * PAGE_SIZE;
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}
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if (qp->npages < 0 || qp->npages > PVRDMA_PAGE_DIR_MAX_PAGES) {
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dev_warn(&dev->pdev->dev,
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"overflow pages in queuepair\n");
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ret = -EINVAL;
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goto err_umem;
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}
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ret = pvrdma_page_dir_init(dev, &qp->pdir, qp->npages,
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qp->is_kernel);
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if (ret) {
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dev_warn(&dev->pdev->dev,
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"could not allocate page directory\n");
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goto err_umem;
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}
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if (!qp->is_kernel) {
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pvrdma_page_dir_insert_umem(&qp->pdir, qp->sumem, 0);
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pvrdma_page_dir_insert_umem(&qp->pdir, qp->rumem,
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qp->npages_send);
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} else {
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/* Ring state is always the first page. */
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qp->sq.ring = qp->pdir.pages[0];
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qp->rq.ring = &qp->sq.ring[1];
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}
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break;
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default:
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ret = -EINVAL;
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goto err_qp;
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}
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/* Not supported */
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init_attr->cap.max_inline_data = 0;
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memset(cmd, 0, sizeof(*cmd));
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cmd->hdr.cmd = PVRDMA_CMD_CREATE_QP;
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cmd->pd_handle = to_vpd(pd)->pd_handle;
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cmd->send_cq_handle = to_vcq(init_attr->send_cq)->cq_handle;
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cmd->recv_cq_handle = to_vcq(init_attr->recv_cq)->cq_handle;
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cmd->max_send_wr = init_attr->cap.max_send_wr;
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cmd->max_recv_wr = init_attr->cap.max_recv_wr;
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cmd->max_send_sge = init_attr->cap.max_send_sge;
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cmd->max_recv_sge = init_attr->cap.max_recv_sge;
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cmd->max_inline_data = init_attr->cap.max_inline_data;
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cmd->sq_sig_all = (init_attr->sq_sig_type == IB_SIGNAL_ALL_WR) ? 1 : 0;
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cmd->qp_type = ib_qp_type_to_pvrdma(init_attr->qp_type);
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cmd->access_flags = IB_ACCESS_LOCAL_WRITE;
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cmd->total_chunks = qp->npages;
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cmd->send_chunks = qp->npages_send - PVRDMA_QP_NUM_HEADER_PAGES;
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cmd->pdir_dma = qp->pdir.dir_dma;
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dev_dbg(&dev->pdev->dev, "create queuepair with %d, %d, %d, %d\n",
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cmd->max_send_wr, cmd->max_recv_wr, cmd->max_send_sge,
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cmd->max_recv_sge);
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ret = pvrdma_cmd_post(dev, &req, &rsp, PVRDMA_CMD_CREATE_QP_RESP);
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if (ret < 0) {
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dev_warn(&dev->pdev->dev,
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"could not create queuepair, error: %d\n", ret);
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goto err_pdir;
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}
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/* max_send_wr/_recv_wr/_send_sge/_recv_sge/_inline_data */
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qp->qp_handle = resp->qpn;
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qp->port = init_attr->port_num;
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qp->ibqp.qp_num = resp->qpn;
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spin_lock_irqsave(&dev->qp_tbl_lock, flags);
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dev->qp_tbl[qp->qp_handle % dev->dsr->caps.max_qp] = qp;
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spin_unlock_irqrestore(&dev->qp_tbl_lock, flags);
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return &qp->ibqp;
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|
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err_pdir:
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pvrdma_page_dir_cleanup(dev, &qp->pdir);
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err_umem:
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if (pd->uobject && udata) {
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if (qp->rumem)
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ib_umem_release(qp->rumem);
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if (qp->sumem)
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ib_umem_release(qp->sumem);
|
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}
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err_qp:
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kfree(qp);
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atomic_dec(&dev->num_qps);
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|
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return ERR_PTR(ret);
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}
|
|
|
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static void pvrdma_free_qp(struct pvrdma_qp *qp)
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{
|
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struct pvrdma_dev *dev = to_vdev(qp->ibqp.device);
|
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struct pvrdma_cq *scq;
|
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struct pvrdma_cq *rcq;
|
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unsigned long flags, scq_flags, rcq_flags;
|
|
|
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/* In case cq is polling */
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get_cqs(qp, &scq, &rcq);
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pvrdma_lock_cqs(scq, rcq, &scq_flags, &rcq_flags);
|
|
|
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_pvrdma_flush_cqe(qp, scq);
|
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if (scq != rcq)
|
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_pvrdma_flush_cqe(qp, rcq);
|
|
|
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spin_lock_irqsave(&dev->qp_tbl_lock, flags);
|
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dev->qp_tbl[qp->qp_handle] = NULL;
|
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spin_unlock_irqrestore(&dev->qp_tbl_lock, flags);
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|
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pvrdma_unlock_cqs(scq, rcq, &scq_flags, &rcq_flags);
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|
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atomic_dec(&qp->refcnt);
|
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wait_event(qp->wait, !atomic_read(&qp->refcnt));
|
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|
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pvrdma_page_dir_cleanup(dev, &qp->pdir);
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|
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kfree(qp);
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|
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atomic_dec(&dev->num_qps);
|
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}
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|
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/**
|
|
* pvrdma_destroy_qp - destroy a queue pair
|
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* @qp: the queue pair to destroy
|
|
*
|
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* @return: 0 on success.
|
|
*/
|
|
int pvrdma_destroy_qp(struct ib_qp *qp)
|
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{
|
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struct pvrdma_qp *vqp = to_vqp(qp);
|
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union pvrdma_cmd_req req;
|
|
struct pvrdma_cmd_destroy_qp *cmd = &req.destroy_qp;
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int ret;
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|
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memset(cmd, 0, sizeof(*cmd));
|
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cmd->hdr.cmd = PVRDMA_CMD_DESTROY_QP;
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cmd->qp_handle = vqp->qp_handle;
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|
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ret = pvrdma_cmd_post(to_vdev(qp->device), &req, NULL, 0);
|
|
if (ret < 0)
|
|
dev_warn(&to_vdev(qp->device)->pdev->dev,
|
|
"destroy queuepair failed, error: %d\n", ret);
|
|
|
|
pvrdma_free_qp(vqp);
|
|
|
|
return 0;
|
|
}
|
|
|
|
/**
|
|
* pvrdma_modify_qp - modify queue pair attributes
|
|
* @ibqp: the queue pair
|
|
* @attr: the new queue pair's attributes
|
|
* @attr_mask: attributes mask
|
|
* @udata: user data
|
|
*
|
|
* @returns 0 on success, otherwise returns an errno.
|
|
*/
|
|
int pvrdma_modify_qp(struct ib_qp *ibqp, struct ib_qp_attr *attr,
|
|
int attr_mask, struct ib_udata *udata)
|
|
{
|
|
struct pvrdma_dev *dev = to_vdev(ibqp->device);
|
|
struct pvrdma_qp *qp = to_vqp(ibqp);
|
|
union pvrdma_cmd_req req;
|
|
union pvrdma_cmd_resp rsp;
|
|
struct pvrdma_cmd_modify_qp *cmd = &req.modify_qp;
|
|
int cur_state, next_state;
|
|
int ret;
|
|
|
|
/* Sanity checking. Should need lock here */
|
|
mutex_lock(&qp->mutex);
|
|
cur_state = (attr_mask & IB_QP_CUR_STATE) ? attr->cur_qp_state :
|
|
qp->state;
|
|
next_state = (attr_mask & IB_QP_STATE) ? attr->qp_state : cur_state;
|
|
|
|
if (!ib_modify_qp_is_ok(cur_state, next_state, ibqp->qp_type,
|
|
attr_mask, IB_LINK_LAYER_ETHERNET)) {
|
|
ret = -EINVAL;
|
|
goto out;
|
|
}
|
|
|
|
if (attr_mask & IB_QP_PORT) {
|
|
if (attr->port_num == 0 ||
|
|
attr->port_num > ibqp->device->phys_port_cnt) {
|
|
ret = -EINVAL;
|
|
goto out;
|
|
}
|
|
}
|
|
|
|
if (attr_mask & IB_QP_MIN_RNR_TIMER) {
|
|
if (attr->min_rnr_timer > 31) {
|
|
ret = -EINVAL;
|
|
goto out;
|
|
}
|
|
}
|
|
|
|
if (attr_mask & IB_QP_PKEY_INDEX) {
|
|
if (attr->pkey_index >= dev->dsr->caps.max_pkeys) {
|
|
ret = -EINVAL;
|
|
goto out;
|
|
}
|
|
}
|
|
|
|
if (attr_mask & IB_QP_QKEY)
|
|
qp->qkey = attr->qkey;
|
|
|
|
if (cur_state == next_state && cur_state == IB_QPS_RESET) {
|
|
ret = 0;
|
|
goto out;
|
|
}
|
|
|
|
qp->state = next_state;
|
|
memset(cmd, 0, sizeof(*cmd));
|
|
cmd->hdr.cmd = PVRDMA_CMD_MODIFY_QP;
|
|
cmd->qp_handle = qp->qp_handle;
|
|
cmd->attr_mask = ib_qp_attr_mask_to_pvrdma(attr_mask);
|
|
cmd->attrs.qp_state = ib_qp_state_to_pvrdma(attr->qp_state);
|
|
cmd->attrs.cur_qp_state =
|
|
ib_qp_state_to_pvrdma(attr->cur_qp_state);
|
|
cmd->attrs.path_mtu = ib_mtu_to_pvrdma(attr->path_mtu);
|
|
cmd->attrs.path_mig_state =
|
|
ib_mig_state_to_pvrdma(attr->path_mig_state);
|
|
cmd->attrs.qkey = attr->qkey;
|
|
cmd->attrs.rq_psn = attr->rq_psn;
|
|
cmd->attrs.sq_psn = attr->sq_psn;
|
|
cmd->attrs.dest_qp_num = attr->dest_qp_num;
|
|
cmd->attrs.qp_access_flags =
|
|
ib_access_flags_to_pvrdma(attr->qp_access_flags);
|
|
cmd->attrs.pkey_index = attr->pkey_index;
|
|
cmd->attrs.alt_pkey_index = attr->alt_pkey_index;
|
|
cmd->attrs.en_sqd_async_notify = attr->en_sqd_async_notify;
|
|
cmd->attrs.sq_draining = attr->sq_draining;
|
|
cmd->attrs.max_rd_atomic = attr->max_rd_atomic;
|
|
cmd->attrs.max_dest_rd_atomic = attr->max_dest_rd_atomic;
|
|
cmd->attrs.min_rnr_timer = attr->min_rnr_timer;
|
|
cmd->attrs.port_num = attr->port_num;
|
|
cmd->attrs.timeout = attr->timeout;
|
|
cmd->attrs.retry_cnt = attr->retry_cnt;
|
|
cmd->attrs.rnr_retry = attr->rnr_retry;
|
|
cmd->attrs.alt_port_num = attr->alt_port_num;
|
|
cmd->attrs.alt_timeout = attr->alt_timeout;
|
|
ib_qp_cap_to_pvrdma(&cmd->attrs.cap, &attr->cap);
|
|
rdma_ah_attr_to_pvrdma(&cmd->attrs.ah_attr, &attr->ah_attr);
|
|
rdma_ah_attr_to_pvrdma(&cmd->attrs.alt_ah_attr, &attr->alt_ah_attr);
|
|
|
|
ret = pvrdma_cmd_post(dev, &req, &rsp, PVRDMA_CMD_MODIFY_QP_RESP);
|
|
if (ret < 0) {
|
|
dev_warn(&dev->pdev->dev,
|
|
"could not modify queuepair, error: %d\n", ret);
|
|
} else if (rsp.hdr.err > 0) {
|
|
dev_warn(&dev->pdev->dev,
|
|
"cannot modify queuepair, error: %d\n", rsp.hdr.err);
|
|
ret = -EINVAL;
|
|
}
|
|
|
|
if (ret == 0 && next_state == IB_QPS_RESET)
|
|
pvrdma_reset_qp(qp);
|
|
|
|
out:
|
|
mutex_unlock(&qp->mutex);
|
|
|
|
return ret;
|
|
}
|
|
|
|
static inline void *get_sq_wqe(struct pvrdma_qp *qp, unsigned int n)
|
|
{
|
|
return pvrdma_page_dir_get_ptr(&qp->pdir,
|
|
qp->sq.offset + n * qp->sq.wqe_size);
|
|
}
|
|
|
|
static inline void *get_rq_wqe(struct pvrdma_qp *qp, unsigned int n)
|
|
{
|
|
return pvrdma_page_dir_get_ptr(&qp->pdir,
|
|
qp->rq.offset + n * qp->rq.wqe_size);
|
|
}
|
|
|
|
static int set_reg_seg(struct pvrdma_sq_wqe_hdr *wqe_hdr, struct ib_reg_wr *wr)
|
|
{
|
|
struct pvrdma_user_mr *mr = to_vmr(wr->mr);
|
|
|
|
wqe_hdr->wr.fast_reg.iova_start = mr->ibmr.iova;
|
|
wqe_hdr->wr.fast_reg.pl_pdir_dma = mr->pdir.dir_dma;
|
|
wqe_hdr->wr.fast_reg.page_shift = mr->page_shift;
|
|
wqe_hdr->wr.fast_reg.page_list_len = mr->npages;
|
|
wqe_hdr->wr.fast_reg.length = mr->ibmr.length;
|
|
wqe_hdr->wr.fast_reg.access_flags = wr->access;
|
|
wqe_hdr->wr.fast_reg.rkey = wr->key;
|
|
|
|
return pvrdma_page_dir_insert_page_list(&mr->pdir, mr->pages,
|
|
mr->npages);
|
|
}
|
|
|
|
/**
|
|
* pvrdma_post_send - post send work request entries on a QP
|
|
* @ibqp: the QP
|
|
* @wr: work request list to post
|
|
* @bad_wr: the first bad WR returned
|
|
*
|
|
* @return: 0 on success, otherwise errno returned.
|
|
*/
|
|
int pvrdma_post_send(struct ib_qp *ibqp, struct ib_send_wr *wr,
|
|
struct ib_send_wr **bad_wr)
|
|
{
|
|
struct pvrdma_qp *qp = to_vqp(ibqp);
|
|
struct pvrdma_dev *dev = to_vdev(ibqp->device);
|
|
unsigned long flags;
|
|
struct pvrdma_sq_wqe_hdr *wqe_hdr;
|
|
struct pvrdma_sge *sge;
|
|
int i, ret;
|
|
|
|
/*
|
|
* In states lower than RTS, we can fail immediately. In other states,
|
|
* just post and let the device figure it out.
|
|
*/
|
|
if (qp->state < IB_QPS_RTS) {
|
|
*bad_wr = wr;
|
|
return -EINVAL;
|
|
}
|
|
|
|
spin_lock_irqsave(&qp->sq.lock, flags);
|
|
|
|
while (wr) {
|
|
unsigned int tail = 0;
|
|
|
|
if (unlikely(!pvrdma_idx_ring_has_space(
|
|
qp->sq.ring, qp->sq.wqe_cnt, &tail))) {
|
|
dev_warn_ratelimited(&dev->pdev->dev,
|
|
"send queue is full\n");
|
|
*bad_wr = wr;
|
|
ret = -ENOMEM;
|
|
goto out;
|
|
}
|
|
|
|
if (unlikely(wr->num_sge > qp->sq.max_sg || wr->num_sge < 0)) {
|
|
dev_warn_ratelimited(&dev->pdev->dev,
|
|
"send SGE overflow\n");
|
|
*bad_wr = wr;
|
|
ret = -EINVAL;
|
|
goto out;
|
|
}
|
|
|
|
if (unlikely(wr->opcode < 0)) {
|
|
dev_warn_ratelimited(&dev->pdev->dev,
|
|
"invalid send opcode\n");
|
|
*bad_wr = wr;
|
|
ret = -EINVAL;
|
|
goto out;
|
|
}
|
|
|
|
/*
|
|
* Only support UD, RC.
|
|
* Need to check opcode table for thorough checking.
|
|
* opcode _UD _UC _RC
|
|
* _SEND x x x
|
|
* _SEND_WITH_IMM x x x
|
|
* _RDMA_WRITE x x
|
|
* _RDMA_WRITE_WITH_IMM x x
|
|
* _LOCAL_INV x x
|
|
* _SEND_WITH_INV x x
|
|
* _RDMA_READ x
|
|
* _ATOMIC_CMP_AND_SWP x
|
|
* _ATOMIC_FETCH_AND_ADD x
|
|
* _MASK_ATOMIC_CMP_AND_SWP x
|
|
* _MASK_ATOMIC_FETCH_AND_ADD x
|
|
* _REG_MR x
|
|
*
|
|
*/
|
|
if (qp->ibqp.qp_type != IB_QPT_UD &&
|
|
qp->ibqp.qp_type != IB_QPT_RC &&
|
|
wr->opcode != IB_WR_SEND) {
|
|
dev_warn_ratelimited(&dev->pdev->dev,
|
|
"unsupported queuepair type\n");
|
|
*bad_wr = wr;
|
|
ret = -EINVAL;
|
|
goto out;
|
|
} else if (qp->ibqp.qp_type == IB_QPT_UD ||
|
|
qp->ibqp.qp_type == IB_QPT_GSI) {
|
|
if (wr->opcode != IB_WR_SEND &&
|
|
wr->opcode != IB_WR_SEND_WITH_IMM) {
|
|
dev_warn_ratelimited(&dev->pdev->dev,
|
|
"invalid send opcode\n");
|
|
*bad_wr = wr;
|
|
ret = -EINVAL;
|
|
goto out;
|
|
}
|
|
}
|
|
|
|
wqe_hdr = (struct pvrdma_sq_wqe_hdr *)get_sq_wqe(qp, tail);
|
|
memset(wqe_hdr, 0, sizeof(*wqe_hdr));
|
|
wqe_hdr->wr_id = wr->wr_id;
|
|
wqe_hdr->num_sge = wr->num_sge;
|
|
wqe_hdr->opcode = ib_wr_opcode_to_pvrdma(wr->opcode);
|
|
wqe_hdr->send_flags = ib_send_flags_to_pvrdma(wr->send_flags);
|
|
if (wr->opcode == IB_WR_SEND_WITH_IMM ||
|
|
wr->opcode == IB_WR_RDMA_WRITE_WITH_IMM)
|
|
wqe_hdr->ex.imm_data = wr->ex.imm_data;
|
|
|
|
switch (qp->ibqp.qp_type) {
|
|
case IB_QPT_GSI:
|
|
case IB_QPT_UD:
|
|
if (unlikely(!ud_wr(wr)->ah)) {
|
|
dev_warn_ratelimited(&dev->pdev->dev,
|
|
"invalid address handle\n");
|
|
*bad_wr = wr;
|
|
ret = -EINVAL;
|
|
goto out;
|
|
}
|
|
|
|
/*
|
|
* Use qkey from qp context if high order bit set,
|
|
* otherwise from work request.
|
|
*/
|
|
wqe_hdr->wr.ud.remote_qpn = ud_wr(wr)->remote_qpn;
|
|
wqe_hdr->wr.ud.remote_qkey =
|
|
ud_wr(wr)->remote_qkey & 0x80000000 ?
|
|
qp->qkey : ud_wr(wr)->remote_qkey;
|
|
wqe_hdr->wr.ud.av = to_vah(ud_wr(wr)->ah)->av;
|
|
|
|
break;
|
|
case IB_QPT_RC:
|
|
switch (wr->opcode) {
|
|
case IB_WR_RDMA_READ:
|
|
case IB_WR_RDMA_WRITE:
|
|
case IB_WR_RDMA_WRITE_WITH_IMM:
|
|
wqe_hdr->wr.rdma.remote_addr =
|
|
rdma_wr(wr)->remote_addr;
|
|
wqe_hdr->wr.rdma.rkey = rdma_wr(wr)->rkey;
|
|
break;
|
|
case IB_WR_LOCAL_INV:
|
|
case IB_WR_SEND_WITH_INV:
|
|
wqe_hdr->ex.invalidate_rkey =
|
|
wr->ex.invalidate_rkey;
|
|
break;
|
|
case IB_WR_ATOMIC_CMP_AND_SWP:
|
|
case IB_WR_ATOMIC_FETCH_AND_ADD:
|
|
wqe_hdr->wr.atomic.remote_addr =
|
|
atomic_wr(wr)->remote_addr;
|
|
wqe_hdr->wr.atomic.rkey = atomic_wr(wr)->rkey;
|
|
wqe_hdr->wr.atomic.compare_add =
|
|
atomic_wr(wr)->compare_add;
|
|
if (wr->opcode == IB_WR_ATOMIC_CMP_AND_SWP)
|
|
wqe_hdr->wr.atomic.swap =
|
|
atomic_wr(wr)->swap;
|
|
break;
|
|
case IB_WR_REG_MR:
|
|
ret = set_reg_seg(wqe_hdr, reg_wr(wr));
|
|
if (ret < 0) {
|
|
dev_warn_ratelimited(&dev->pdev->dev,
|
|
"Failed to set fast register work request\n");
|
|
*bad_wr = wr;
|
|
goto out;
|
|
}
|
|
break;
|
|
default:
|
|
break;
|
|
}
|
|
|
|
break;
|
|
default:
|
|
dev_warn_ratelimited(&dev->pdev->dev,
|
|
"invalid queuepair type\n");
|
|
ret = -EINVAL;
|
|
*bad_wr = wr;
|
|
goto out;
|
|
}
|
|
|
|
sge = (struct pvrdma_sge *)(wqe_hdr + 1);
|
|
for (i = 0; i < wr->num_sge; i++) {
|
|
/* Need to check wqe_size 0 or max size */
|
|
sge->addr = wr->sg_list[i].addr;
|
|
sge->length = wr->sg_list[i].length;
|
|
sge->lkey = wr->sg_list[i].lkey;
|
|
sge++;
|
|
}
|
|
|
|
/* Make sure wqe is written before index update */
|
|
smp_wmb();
|
|
|
|
/* Update shared sq ring */
|
|
pvrdma_idx_ring_inc(&qp->sq.ring->prod_tail,
|
|
qp->sq.wqe_cnt);
|
|
|
|
wr = wr->next;
|
|
}
|
|
|
|
ret = 0;
|
|
|
|
out:
|
|
spin_unlock_irqrestore(&qp->sq.lock, flags);
|
|
|
|
if (!ret)
|
|
pvrdma_write_uar_qp(dev, PVRDMA_UAR_QP_SEND | qp->qp_handle);
|
|
|
|
return ret;
|
|
}
|
|
|
|
/**
|
|
* pvrdma_post_receive - post receive work request entries on a QP
|
|
* @ibqp: the QP
|
|
* @wr: the work request list to post
|
|
* @bad_wr: the first bad WR returned
|
|
*
|
|
* @return: 0 on success, otherwise errno returned.
|
|
*/
|
|
int pvrdma_post_recv(struct ib_qp *ibqp, struct ib_recv_wr *wr,
|
|
struct ib_recv_wr **bad_wr)
|
|
{
|
|
struct pvrdma_dev *dev = to_vdev(ibqp->device);
|
|
unsigned long flags;
|
|
struct pvrdma_qp *qp = to_vqp(ibqp);
|
|
struct pvrdma_rq_wqe_hdr *wqe_hdr;
|
|
struct pvrdma_sge *sge;
|
|
int ret = 0;
|
|
int i;
|
|
|
|
/*
|
|
* In the RESET state, we can fail immediately. For other states,
|
|
* just post and let the device figure it out.
|
|
*/
|
|
if (qp->state == IB_QPS_RESET) {
|
|
*bad_wr = wr;
|
|
return -EINVAL;
|
|
}
|
|
|
|
spin_lock_irqsave(&qp->rq.lock, flags);
|
|
|
|
while (wr) {
|
|
unsigned int tail = 0;
|
|
|
|
if (unlikely(wr->num_sge > qp->rq.max_sg ||
|
|
wr->num_sge < 0)) {
|
|
ret = -EINVAL;
|
|
*bad_wr = wr;
|
|
dev_warn_ratelimited(&dev->pdev->dev,
|
|
"recv SGE overflow\n");
|
|
goto out;
|
|
}
|
|
|
|
if (unlikely(!pvrdma_idx_ring_has_space(
|
|
qp->rq.ring, qp->rq.wqe_cnt, &tail))) {
|
|
ret = -ENOMEM;
|
|
*bad_wr = wr;
|
|
dev_warn_ratelimited(&dev->pdev->dev,
|
|
"recv queue full\n");
|
|
goto out;
|
|
}
|
|
|
|
wqe_hdr = (struct pvrdma_rq_wqe_hdr *)get_rq_wqe(qp, tail);
|
|
wqe_hdr->wr_id = wr->wr_id;
|
|
wqe_hdr->num_sge = wr->num_sge;
|
|
wqe_hdr->total_len = 0;
|
|
|
|
sge = (struct pvrdma_sge *)(wqe_hdr + 1);
|
|
for (i = 0; i < wr->num_sge; i++) {
|
|
sge->addr = wr->sg_list[i].addr;
|
|
sge->length = wr->sg_list[i].length;
|
|
sge->lkey = wr->sg_list[i].lkey;
|
|
sge++;
|
|
}
|
|
|
|
/* Make sure wqe is written before index update */
|
|
smp_wmb();
|
|
|
|
/* Update shared rq ring */
|
|
pvrdma_idx_ring_inc(&qp->rq.ring->prod_tail,
|
|
qp->rq.wqe_cnt);
|
|
|
|
wr = wr->next;
|
|
}
|
|
|
|
spin_unlock_irqrestore(&qp->rq.lock, flags);
|
|
|
|
pvrdma_write_uar_qp(dev, PVRDMA_UAR_QP_RECV | qp->qp_handle);
|
|
|
|
return ret;
|
|
|
|
out:
|
|
spin_unlock_irqrestore(&qp->rq.lock, flags);
|
|
|
|
return ret;
|
|
}
|
|
|
|
/**
|
|
* pvrdma_query_qp - query a queue pair's attributes
|
|
* @ibqp: the queue pair to query
|
|
* @attr: the queue pair's attributes
|
|
* @attr_mask: attributes mask
|
|
* @init_attr: initial queue pair attributes
|
|
*
|
|
* @returns 0 on success, otherwise returns an errno.
|
|
*/
|
|
int pvrdma_query_qp(struct ib_qp *ibqp, struct ib_qp_attr *attr,
|
|
int attr_mask, struct ib_qp_init_attr *init_attr)
|
|
{
|
|
struct pvrdma_dev *dev = to_vdev(ibqp->device);
|
|
struct pvrdma_qp *qp = to_vqp(ibqp);
|
|
union pvrdma_cmd_req req;
|
|
union pvrdma_cmd_resp rsp;
|
|
struct pvrdma_cmd_query_qp *cmd = &req.query_qp;
|
|
struct pvrdma_cmd_query_qp_resp *resp = &rsp.query_qp_resp;
|
|
int ret = 0;
|
|
|
|
mutex_lock(&qp->mutex);
|
|
|
|
if (qp->state == IB_QPS_RESET) {
|
|
attr->qp_state = IB_QPS_RESET;
|
|
goto out;
|
|
}
|
|
|
|
memset(cmd, 0, sizeof(*cmd));
|
|
cmd->hdr.cmd = PVRDMA_CMD_QUERY_QP;
|
|
cmd->qp_handle = qp->qp_handle;
|
|
cmd->attr_mask = ib_qp_attr_mask_to_pvrdma(attr_mask);
|
|
|
|
ret = pvrdma_cmd_post(dev, &req, &rsp, PVRDMA_CMD_QUERY_QP_RESP);
|
|
if (ret < 0) {
|
|
dev_warn(&dev->pdev->dev,
|
|
"could not query queuepair, error: %d\n", ret);
|
|
goto out;
|
|
}
|
|
|
|
attr->qp_state = pvrdma_qp_state_to_ib(resp->attrs.qp_state);
|
|
attr->cur_qp_state =
|
|
pvrdma_qp_state_to_ib(resp->attrs.cur_qp_state);
|
|
attr->path_mtu = pvrdma_mtu_to_ib(resp->attrs.path_mtu);
|
|
attr->path_mig_state =
|
|
pvrdma_mig_state_to_ib(resp->attrs.path_mig_state);
|
|
attr->qkey = resp->attrs.qkey;
|
|
attr->rq_psn = resp->attrs.rq_psn;
|
|
attr->sq_psn = resp->attrs.sq_psn;
|
|
attr->dest_qp_num = resp->attrs.dest_qp_num;
|
|
attr->qp_access_flags =
|
|
pvrdma_access_flags_to_ib(resp->attrs.qp_access_flags);
|
|
attr->pkey_index = resp->attrs.pkey_index;
|
|
attr->alt_pkey_index = resp->attrs.alt_pkey_index;
|
|
attr->en_sqd_async_notify = resp->attrs.en_sqd_async_notify;
|
|
attr->sq_draining = resp->attrs.sq_draining;
|
|
attr->max_rd_atomic = resp->attrs.max_rd_atomic;
|
|
attr->max_dest_rd_atomic = resp->attrs.max_dest_rd_atomic;
|
|
attr->min_rnr_timer = resp->attrs.min_rnr_timer;
|
|
attr->port_num = resp->attrs.port_num;
|
|
attr->timeout = resp->attrs.timeout;
|
|
attr->retry_cnt = resp->attrs.retry_cnt;
|
|
attr->rnr_retry = resp->attrs.rnr_retry;
|
|
attr->alt_port_num = resp->attrs.alt_port_num;
|
|
attr->alt_timeout = resp->attrs.alt_timeout;
|
|
pvrdma_qp_cap_to_ib(&attr->cap, &resp->attrs.cap);
|
|
pvrdma_ah_attr_to_rdma(&attr->ah_attr, &resp->attrs.ah_attr);
|
|
pvrdma_ah_attr_to_rdma(&attr->alt_ah_attr, &resp->attrs.alt_ah_attr);
|
|
|
|
qp->state = attr->qp_state;
|
|
|
|
ret = 0;
|
|
|
|
out:
|
|
attr->cur_qp_state = attr->qp_state;
|
|
|
|
init_attr->event_handler = qp->ibqp.event_handler;
|
|
init_attr->qp_context = qp->ibqp.qp_context;
|
|
init_attr->send_cq = qp->ibqp.send_cq;
|
|
init_attr->recv_cq = qp->ibqp.recv_cq;
|
|
init_attr->srq = qp->ibqp.srq;
|
|
init_attr->xrcd = NULL;
|
|
init_attr->cap = attr->cap;
|
|
init_attr->sq_sig_type = 0;
|
|
init_attr->qp_type = qp->ibqp.qp_type;
|
|
init_attr->create_flags = 0;
|
|
init_attr->port_num = qp->port;
|
|
|
|
mutex_unlock(&qp->mutex);
|
|
return ret;
|
|
}
|