124 lines
3.9 KiB
C
124 lines
3.9 KiB
C
/*
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* Copyright(c) 2017 Intel Corporation.
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*
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* This file is provided under a dual BSD/GPLv2 license. When using or
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* redistributing this file, you may do so under either license.
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*
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* GPL LICENSE SUMMARY
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of version 2 of the GNU General Public License as
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* published by the Free Software Foundation.
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*
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* This program is distributed in the hope that it will be useful, but
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* WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* General Public License for more details.
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*
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* 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
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* are met:
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*
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* - Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* - Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in
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* the documentation and/or other materials provided with the
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* distribution.
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* - Neither the name of Intel Corporation nor the names of its
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* contributors may be used to endorse or promote products derived
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* from this software without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
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* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
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* OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
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* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*
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*/
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#include "exp_rcv.h"
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#include "trace.h"
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/**
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* exp_tid_group_init - initialize exp_tid_set
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* @set - the set
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*/
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static void hfi1_exp_tid_set_init(struct exp_tid_set *set)
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{
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INIT_LIST_HEAD(&set->list);
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set->count = 0;
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}
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/**
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* hfi1_exp_tid_group_init - initialize rcd expected receive
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* @rcd - the rcd
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*/
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void hfi1_exp_tid_group_init(struct hfi1_ctxtdata *rcd)
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{
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hfi1_exp_tid_set_init(&rcd->tid_group_list);
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hfi1_exp_tid_set_init(&rcd->tid_used_list);
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hfi1_exp_tid_set_init(&rcd->tid_full_list);
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}
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/**
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* alloc_ctxt_rcv_groups - initialize expected receive groups
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* @rcd - the context to add the groupings to
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*/
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int hfi1_alloc_ctxt_rcv_groups(struct hfi1_ctxtdata *rcd)
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{
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struct hfi1_devdata *dd = rcd->dd;
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u32 tidbase;
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struct tid_group *grp;
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int i;
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u32 ngroups;
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ngroups = rcd->expected_count / dd->rcv_entries.group_size;
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rcd->groups =
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kcalloc_node(ngroups, sizeof(*rcd->groups),
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GFP_KERNEL, rcd->numa_id);
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if (!rcd->groups)
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return -ENOMEM;
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tidbase = rcd->expected_base;
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for (i = 0; i < ngroups; i++) {
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grp = &rcd->groups[i];
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grp->size = dd->rcv_entries.group_size;
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grp->base = tidbase;
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tid_group_add_tail(grp, &rcd->tid_group_list);
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tidbase += dd->rcv_entries.group_size;
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}
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return 0;
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}
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/**
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* free_ctxt_rcv_groups - free expected receive groups
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* @rcd - the context to free
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*
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* The routine dismantles the expect receive linked
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* list and clears any tids associated with the receive
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* context.
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*
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* This should only be called for kernel contexts and the
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* a base user context.
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*/
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void hfi1_free_ctxt_rcv_groups(struct hfi1_ctxtdata *rcd)
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{
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WARN_ON(!EXP_TID_SET_EMPTY(rcd->tid_full_list));
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WARN_ON(!EXP_TID_SET_EMPTY(rcd->tid_used_list));
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kfree(rcd->groups);
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rcd->groups = NULL;
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hfi1_exp_tid_group_init(rcd);
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hfi1_clear_tids(rcd);
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}
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