1// SPDX-License-Identifier: GPL-2.0 OR BSD-3-Clause
2/*
3 * Copyright(c) 2017 Intel Corporation.
4 */
5
6#include "exp_rcv.h"
7#include "trace.h"
8
9/**
10 * hfi1_exp_tid_set_init - initialize exp_tid_set
11 * @set: the set
12 */
13static void hfi1_exp_tid_set_init(struct exp_tid_set *set)
14{
15	INIT_LIST_HEAD(&set->list);
16	set->count = 0;
17}
18
19/**
20 * hfi1_exp_tid_group_init - initialize rcd expected receive
21 * @rcd: the rcd
22 */
23void hfi1_exp_tid_group_init(struct hfi1_ctxtdata *rcd)
24{
25	hfi1_exp_tid_set_init(&rcd->tid_group_list);
26	hfi1_exp_tid_set_init(&rcd->tid_used_list);
27	hfi1_exp_tid_set_init(&rcd->tid_full_list);
28}
29
30/**
31 * hfi1_alloc_ctxt_rcv_groups - initialize expected receive groups
32 * @rcd: the context to add the groupings to
33 */
34int hfi1_alloc_ctxt_rcv_groups(struct hfi1_ctxtdata *rcd)
35{
36	struct hfi1_devdata *dd = rcd->dd;
37	u32 tidbase;
38	struct tid_group *grp;
39	int i;
40	u32 ngroups;
41
42	ngroups = rcd->expected_count / dd->rcv_entries.group_size;
43	rcd->groups =
44		kcalloc_node(ngroups, sizeof(*rcd->groups),
45			     GFP_KERNEL, rcd->numa_id);
46	if (!rcd->groups)
47		return -ENOMEM;
48	tidbase = rcd->expected_base;
49	for (i = 0; i < ngroups; i++) {
50		grp = &rcd->groups[i];
51		grp->size = dd->rcv_entries.group_size;
52		grp->base = tidbase;
53		tid_group_add_tail(grp, &rcd->tid_group_list);
54		tidbase += dd->rcv_entries.group_size;
55	}
56
57	return 0;
58}
59
60/**
61 * hfi1_free_ctxt_rcv_groups - free  expected receive groups
62 * @rcd: the context to free
63 *
64 * The routine dismantles the expect receive linked
65 * list and clears any tids associated with the receive
66 * context.
67 *
68 * This should only be called for kernel contexts and the
69 * a base user context.
70 */
71void hfi1_free_ctxt_rcv_groups(struct hfi1_ctxtdata *rcd)
72{
73	kfree(rcd->groups);
74	rcd->groups = NULL;
75	hfi1_exp_tid_group_init(rcd);
76
77	hfi1_clear_tids(rcd);
78}
79