IB/rdmavt: Add protection domain to rdmavt. (8afd32eb) · Commits · e / devices / android_kernel_fairphone_FP3

drivers/infiniband/sw/rdmavt/Makefile

+2 −1

Original line number	Diff line number	Diff line
		@@ -7,4 +7,5 @@
		#
		obj-$(CONFIG_INFINIBAND_RDMAVT) += rdmavt.o

		rdmavt-y := vt.o dma.o
		rdmavt-y := vt.o dma.o pd.o

drivers/infiniband/sw/rdmavt/pd.c

0 → 100644

+103 −0

Original line number	Diff line number	Diff line
		/*
		* 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/slab.h>
		#include "pd.h"

		struct ib_pd rvt_alloc_pd(struct ib_device ibdev,
		struct ib_ucontext *context,
		struct ib_udata *udata)
		{
		struct rvt_dev_info *dev = ib_to_rvt(ibdev);
		struct rvt_pd *pd;
		struct ib_pd *ret;

		pd = kmalloc(sizeof(*pd), GFP_KERNEL);
		if (!pd) {
		ret = ERR_PTR(-ENOMEM);
		goto bail;
		}
		/*
		* While we could continue allocating protecetion domains, being
		* constrained only by system resources. The IBTA spec defines that
		* there is a max_pd limit that can be set and we need to check for
		* that.
		*/

		spin_lock(&dev->n_pds_lock);
		if (dev->n_pds_allocated == dev->dparms.max_pds) {
		spin_unlock(&dev->n_pds_lock);
		kfree(pd);
		ret = ERR_PTR(-ENOMEM);
		goto bail;
		}

		dev->n_pds_allocated++;
		spin_unlock(&dev->n_pds_lock);

		/* ib_alloc_pd() will initialize pd->ibpd. */
		pd->user = udata ? 1 : 0;

		ret = &pd->ibpd;

		bail:
		return ret;
		}

		int rvt_dealloc_pd(struct ib_pd *ibpd)
		{
		struct rvt_pd *pd = ibpd_to_rvtpd(ibpd);
		struct rvt_dev_info *dev = ib_to_rvt(ibpd->device);

		spin_lock(&dev->n_pds_lock);
		dev->n_pds_allocated--;
		spin_unlock(&dev->n_pds_lock);

		kfree(pd);

		return 0;
		}

drivers/infiniband/sw/rdmavt/pd.h

0 → 100644

+58 −0

Original line number	Diff line number	Diff line
		#ifndef DEF_RDMAVTPD_H
		#define DEF_RDMAVTPD_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_pd rvt_alloc_pd(struct ib_device ibdev,
		struct ib_ucontext *context,
		struct ib_udata *udata);
		int rvt_dealloc_pd(struct ib_pd *ibpd);

		#endif /* DEF_RDMAVTPD_H */

drivers/infiniband/sw/rdmavt/vt.c

+12 −0

Original line number	Diff line number	Diff line
		@@ -76,9 +76,21 @@ int rvt_register_device(struct rvt_dev_info *rdi)
		* come up with a better mechanism that simplifies the code at some
		* point.
		*/

		/* DMA Operations */
		rdi->ibdev.dma_ops =
		rdi->ibdev.dma_ops ? : &rvt_default_dma_mapping_ops;

		/* Protection Domain */
		rdi->ibdev.alloc_pd =
		rdi->ibdev.alloc_pd ? : rvt_alloc_pd;
		rdi->ibdev.dealloc_pd =
		rdi->ibdev.dealloc_pd ? : rvt_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);

drivers/infiniband/sw/rdmavt/vt.h

+1 −0

Original line number	Diff line number	Diff line
		@@ -50,5 +50,6 @@

		#include <rdma/rdma_vt.h>
		#include "dma.h"
		#include "pd.h"

		#endif /* DEF_RDMAVT_H */