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>
90 lines
2.9 KiB
C
90 lines
2.9 KiB
C
/*
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* IBM eServer eHCA Infiniband device driver for Linux on POWER
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*
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* Firmware calls
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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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* Waleri Fomin <fomin@de.ibm.com>
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* Gerd Bayer <gerd.bayer@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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#ifndef __HCP_PHYP_H__
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#define __HCP_PHYP_H__
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/*
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* eHCA page (mapped into memory)
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* resource to access eHCA register pages in CPU address space
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*/
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struct h_galpa {
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u64 fw_handle;
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/* for pSeries this is a 64bit memory address where
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I/O memory is mapped into CPU address space (kv) */
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};
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/*
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* resource to access eHCA address space registers, all types
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*/
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struct h_galpas {
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u32 pid; /*PID of userspace galpa checking */
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struct h_galpa user; /* user space accessible resource,
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set to 0 if unused */
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struct h_galpa kernel; /* kernel space accessible resource,
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set to 0 if unused */
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};
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static inline u64 hipz_galpa_load(struct h_galpa galpa, u32 offset)
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{
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u64 addr = galpa.fw_handle + offset;
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return *(volatile u64 __force *)addr;
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}
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static inline void hipz_galpa_store(struct h_galpa galpa, u32 offset, u64 value)
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{
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u64 addr = galpa.fw_handle + offset;
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*(volatile u64 __force *)addr = value;
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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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int hcp_galpas_dtor(struct h_galpas *galpas);
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int hcall_map_page(u64 physaddr, u64 * mapaddr);
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int hcall_unmap_page(u64 mapaddr);
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#endif
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