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https://github.com/AuxXxilium/linux_dsm_epyc7002.git
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5bb7d9290c
Add support for MR pages larger than 4K on eHCA2. This reduces firmware memory consumption. If enabled via the mr_largepage module parameter, the MR page size will be determined based on the MR length and the hardware capabilities -- if the MR is >= 16M, 16M pages are used, for example. Signed-off-by: Joachim Fenkes <fenkes@de.ibm.com> Signed-off-by: Roland Dreier <rolandd@cisco.com>
122 lines
3.5 KiB
C
122 lines
3.5 KiB
C
/*
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* IBM eServer eHCA Infiniband device driver for Linux on POWER
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*
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* MR/MW declarations and inline functions
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*
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* Authors: Dietmar Decker <ddecker@de.ibm.com>
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* Christoph Raisch <raisch@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 _EHCA_MRMW_H_
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#define _EHCA_MRMW_H_
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int ehca_reg_mr(struct ehca_shca *shca,
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struct ehca_mr *e_mr,
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u64 *iova_start,
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u64 size,
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int acl,
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struct ehca_pd *e_pd,
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struct ehca_mr_pginfo *pginfo,
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u32 *lkey,
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u32 *rkey);
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int ehca_reg_mr_rpages(struct ehca_shca *shca,
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struct ehca_mr *e_mr,
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struct ehca_mr_pginfo *pginfo);
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int ehca_rereg_mr(struct ehca_shca *shca,
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struct ehca_mr *e_mr,
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u64 *iova_start,
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u64 size,
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int mr_access_flags,
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struct ehca_pd *e_pd,
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struct ehca_mr_pginfo *pginfo,
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u32 *lkey,
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u32 *rkey);
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int ehca_unmap_one_fmr(struct ehca_shca *shca,
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struct ehca_mr *e_fmr);
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int ehca_reg_smr(struct ehca_shca *shca,
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struct ehca_mr *e_origmr,
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struct ehca_mr *e_newmr,
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u64 *iova_start,
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int acl,
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struct ehca_pd *e_pd,
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u32 *lkey,
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u32 *rkey);
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int ehca_reg_internal_maxmr(struct ehca_shca *shca,
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struct ehca_pd *e_pd,
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struct ehca_mr **maxmr);
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int ehca_reg_maxmr(struct ehca_shca *shca,
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struct ehca_mr *e_newmr,
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u64 *iova_start,
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int acl,
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struct ehca_pd *e_pd,
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u32 *lkey,
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u32 *rkey);
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int ehca_dereg_internal_maxmr(struct ehca_shca *shca);
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int ehca_mr_chk_buf_and_calc_size(struct ib_phys_buf *phys_buf_array,
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int num_phys_buf,
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u64 *iova_start,
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u64 *size);
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int ehca_fmr_check_page_list(struct ehca_mr *e_fmr,
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u64 *page_list,
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int list_len);
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int ehca_set_pagebuf(struct ehca_mr_pginfo *pginfo,
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u32 number,
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u64 *kpage);
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int ehca_mr_is_maxmr(u64 size,
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u64 *iova_start);
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void ehca_mrmw_map_acl(int ib_acl,
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u32 *hipz_acl);
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void ehca_mrmw_set_pgsize_hipz_acl(u32 pgsize, u32 *hipz_acl);
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void ehca_mrmw_reverse_map_acl(const u32 *hipz_acl,
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int *ib_acl);
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void ehca_mr_deletenew(struct ehca_mr *mr);
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#endif /*_EHCA_MRMW_H_*/
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