19ef1edd7f
Adds the stubs which will handle the query and modify device functions. At this time the only intention is to support changing the node desc and the guid via these calls. 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>
133 lines
4.0 KiB
C
133 lines
4.0 KiB
C
/*
|
|
* 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 <linux/module.h>
|
|
#include <linux/kernel.h>
|
|
#include "vt.h"
|
|
|
|
MODULE_LICENSE("Dual BSD/GPL");
|
|
MODULE_DESCRIPTION("RDMA Verbs Transport Library");
|
|
|
|
static int rvt_init(void)
|
|
{
|
|
/* Do any work needed prior to drivers calling for registration*/
|
|
return 0;
|
|
}
|
|
module_init(rvt_init);
|
|
|
|
static void rvt_cleanup(void)
|
|
{
|
|
}
|
|
module_exit(rvt_cleanup);
|
|
|
|
static int rvt_query_device(struct ib_device *ibdev,
|
|
struct ib_device_attr *props,
|
|
struct ib_udata *uhw)
|
|
{
|
|
/*
|
|
* Return rvt_dev_info.props contents
|
|
*/
|
|
return -EOPNOTSUPP;
|
|
}
|
|
|
|
static int rvt_modify_device(struct ib_device *device,
|
|
int device_modify_mask,
|
|
struct ib_device_modify *device_modify)
|
|
{
|
|
/*
|
|
* Change dev props. Planned support is for node desc change and sys
|
|
* guid change only. This matches hfi1 and qib behavior. Other drivers
|
|
* that support existing modifications will need to add their support.
|
|
*/
|
|
|
|
/*
|
|
* VT-DRIVER-API: node_desc_change()
|
|
* VT-DRIVER-API: sys_guid_change()
|
|
*/
|
|
return -EOPNOTSUPP;
|
|
}
|
|
|
|
/*
|
|
* Check driver override. If driver passes a value use it, otherwise we use our
|
|
* own value.
|
|
*/
|
|
#define CHECK_DRIVER_OVERRIDE(rdi, x) \
|
|
rdi->ibdev.x = rdi->ibdev.x ? : rvt_ ##x
|
|
|
|
int rvt_register_device(struct rvt_dev_info *rdi)
|
|
{
|
|
if (!rdi)
|
|
return -EINVAL;
|
|
|
|
/* Dev Ops */
|
|
CHECK_DRIVER_OVERRIDE(rdi, query_device);
|
|
CHECK_DRIVER_OVERRIDE(rdi, modify_device);
|
|
|
|
/* DMA Operations */
|
|
rdi->ibdev.dma_ops =
|
|
rdi->ibdev.dma_ops ? : &rvt_default_dma_mapping_ops;
|
|
|
|
/* Protection Domain */
|
|
CHECK_DRIVER_OVERRIDE(rdi, alloc_pd);
|
|
CHECK_DRIVER_OVERRIDE(rdi, dealloc_pd);
|
|
spin_lock_init(&rdi->n_pds_lock);
|
|
rdi->n_pds_allocated = 0;
|
|
|
|
/* We are now good to announce we exist */
|
|
return ib_register_device(&rdi->ibdev, rdi->port_callback);
|
|
}
|
|
EXPORT_SYMBOL(rvt_register_device);
|
|
|
|
void rvt_unregister_device(struct rvt_dev_info *rdi)
|
|
{
|
|
if (!rdi)
|
|
return;
|
|
|
|
ib_unregister_device(&rdi->ibdev);
|
|
}
|
|
EXPORT_SYMBOL(rvt_unregister_device);
|