83 lines
2.5 KiB
C
83 lines
2.5 KiB
C
/*
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* IBM eServer eHCA Infiniband device driver for Linux on POWER
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*
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* load store abstraction for ehca register access with tracing
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*
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* Authors: Christoph Raisch <raisch@de.ibm.com>
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* Hoang-Nam Nguyen <hnguyen@de.ibm.com>
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*
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* Copyright (c) 2005 IBM Corporation
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*
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* All rights reserved.
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*
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* This source code is distributed under a dual license of GPL v2.0 and OpenIB
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* BSD.
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*
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* OpenIB 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 are met:
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*
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* Redistributions of source code must retain the above copyright notice, this
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* list of conditions and the following disclaimer.
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*
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* Redistributions in binary form must reproduce the above copyright notice,
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* this list of conditions and the following disclaimer in the documentation
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* 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 "AS IS"
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* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
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* LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR
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* BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER
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* IN CONTRACT, 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 OF THE
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* POSSIBILITY OF SUCH DAMAGE.
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*/
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#include "ehca_classes.h"
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#include "hipz_hw.h"
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u64 hcall_map_page(u64 physaddr)
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{
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return (u64)ioremap(physaddr, EHCA_PAGESIZE);
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}
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int hcall_unmap_page(u64 mapaddr)
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{
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iounmap((volatile void __iomem *) mapaddr);
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return 0;
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}
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int hcp_galpas_ctor(struct h_galpas *galpas, int is_user,
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u64 paddr_kernel, u64 paddr_user)
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{
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if (!is_user) {
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galpas->kernel.fw_handle = hcall_map_page(paddr_kernel);
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if (!galpas->kernel.fw_handle)
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return -ENOMEM;
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} else
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galpas->kernel.fw_handle = 0;
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galpas->user.fw_handle = paddr_user;
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return 0;
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}
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int hcp_galpas_dtor(struct h_galpas *galpas)
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{
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if (galpas->kernel.fw_handle) {
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int ret = hcall_unmap_page(galpas->kernel.fw_handle);
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if (ret)
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return ret;
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}
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galpas->user.fw_handle = galpas->kernel.fw_handle = 0;
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return 0;
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}
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