1988d1fa1a
The queue map for flush completion circumvention is only used for kernel space queue pairs. This patch skips the allocation of the queue maps in case the QP is created for userspace. In addition, this patch does not iomap the galpas for kernel usage if the queue pair is only used in userspace. These changes will improve the performance of creation of userspace queue pairs. Signed-off-by: Stefan Roscher <stefan.roscher@de.ibm.com> Signed-off-by: Roland Dreier <rolandd@cisco.com>
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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int hcall_map_page(u64 physaddr, u64 *mapaddr)
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{
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*mapaddr = (u64)(ioremap(physaddr, EHCA_PAGESIZE));
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return 0;
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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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int ret = hcall_map_page(paddr_kernel, &galpas->kernel.fw_handle);
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if (ret)
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return ret;
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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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