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IB/rdmavt: Add completion queue function stubs

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Create stubs for completion queue creation, polling,
resizing, calling for notification, and destroying.

Reviewed-by: Mike Marciniszyn <mike.marciniszyn@intel.com>
Reviewed-by: Ira Weiny <ira.weiny@intel.com>
Signed-off-by: Dennis Dalessandro <dennis.dalessandro@intel.com>
Signed-off-by: Doug Ledford <dledford@redhat.com>
This commit is contained in:
Dennis Dalessandro 2016-01-06 10:00:42 -08:00 committed by Doug Ledford
parent e6a8818a35
commit cf16335a0c
5 changed files with 184 additions and 1 deletions
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2
drivers/infiniband/sw/rdmavt/Makefile
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@ -7,4 +7,4 @@
#
obj-$(CONFIG_INFINIBAND_RDMAVT) += rdmavt.o
rdmavt-y := vt.o ah.o dma.o mad.o mcast.o mmap.o mr.o pd.o qp.o srq.o
rdmavt-y := vt.o ah.o cq.o dma.o mad.o mcast.o mmap.o mr.o pd.o qp.o srq.o

113
drivers/infiniband/sw/rdmavt/cq.c Normal file
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@ -0,0 +1,113 @@
/*
* Copyright(c) 2015 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.
*
*/
#include "cq.h"
/**
* rvt_create_cq - create a completion queue
* @ibdev: the device this completion queue is attached to
* @attr: creation attributes
* @context: unused by the QLogic_IB driver
* @udata: user data for libibverbs.so
*
* Returns a pointer to the completion queue or negative errno values
* for failure.
*
* Called by ib_create_cq() in the generic verbs code.
*/
struct ib_cq *rvt_create_cq(struct ib_device *ibdev,
const struct ib_cq_init_attr *attr,
struct ib_ucontext *context,
struct ib_udata *udata)
{
return ERR_PTR(-EOPNOTSUPP);
}
/**
* rvt_destroy_cq - destroy a completion queue
* @ibcq: the completion queue to destroy.
*
* Returns 0 for success.
*
* Called by ib_destroy_cq() in the generic verbs code.
*/
int rvt_destroy_cq(struct ib_cq *ibcq)
{
return -EOPNOTSUPP;
}
int rvt_req_notify_cq(struct ib_cq *ibcq, enum ib_cq_notify_flags notify_flags)
{
return -EOPNOTSUPP;
}
/**
* rvt_resize_cq - change the size of the CQ
* @ibcq: the completion queue
*
* Returns 0 for success.
*/
int rvt_resize_cq(struct ib_cq *ibcq, int cqe, struct ib_udata *udata)
{
return -EOPNOTSUPP;
}
/**
* rvt_poll_cq - poll for work completion entries
* @ibcq: the completion queue to poll
* @num_entries: the maximum number of entries to return
* @entry: pointer to array where work completions are placed
*
* Returns the number of completion entries polled.
*
* This may be called from interrupt context. Also called by ib_poll_cq()
* in the generic verbs code.
*/
int rvt_poll_cq(struct ib_cq *ibcq, int num_entries, struct ib_wc *entry)
{
return -EOPNOTSUPP;
}

62
drivers/infiniband/sw/rdmavt/cq.h Normal file
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@ -0,0 +1,62 @@
#ifndef DEF_RVTCQ_H
#define DEF_RVTCQ_H
/*
* Copyright(c) 2015 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.
*
*/
#include <rdma/rdma_vt.h>
struct ib_cq *rvt_create_cq(struct ib_device *ibdev,
const struct ib_cq_init_attr *attr,
struct ib_ucontext *context,
struct ib_udata *udata);
int rvt_destroy_cq(struct ib_cq *ibcq);
int rvt_req_notify_cq(struct ib_cq *ibcq, enum ib_cq_notify_flags notify_flags);
int rvt_resize_cq(struct ib_cq *ibcq, int cqe, struct ib_udata *udata);
int rvt_poll_cq(struct ib_cq *ibcq, int num_entries, struct ib_wc *entry);
#endif /* DEF_RVTCQ_H */

7
drivers/infiniband/sw/rdmavt/vt.c
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@ -260,6 +260,13 @@ int rvt_register_device(struct rvt_dev_info *rdi)
CHECK_DRIVER_OVERRIDE(rdi, dealloc_fmr);
CHECK_DRIVER_OVERRIDE(rdi, mmap);
/* Completion queues */
CHECK_DRIVER_OVERRIDE(rdi, create_cq);
CHECK_DRIVER_OVERRIDE(rdi, destroy_cq);
CHECK_DRIVER_OVERRIDE(rdi, poll_cq);
CHECK_DRIVER_OVERRIDE(rdi, req_notify_cq);
CHECK_DRIVER_OVERRIDE(rdi, resize_cq);
/* DMA Operations */
rdi->ibdev.dma_ops =
rdi->ibdev.dma_ops ? : &rvt_default_dma_mapping_ops;

1
drivers/infiniband/sw/rdmavt/vt.h
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@ -57,5 +57,6 @@
#include "srq.h"
#include "mcast.h"
#include "mmap.h"
#include "cq.h"
#endif /* DEF_RDMAVT_H */