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120 lines
3.8 KiB
120 lines
3.8 KiB
/* |
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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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* hfi1_exp_tid_set_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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* hfi1_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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* hfi1_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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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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