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1/* SPDX-License-Identifier: GPL-2.0 OR BSD-3-Clause */
2/*
3 * Copyright(c) 2015 - 2020 Intel Corporation.
4 */
5
6#ifndef _HFI1_AFFINITY_H
7#define _HFI1_AFFINITY_H
8
9#include "hfi.h"
10
11enum irq_type {
12 IRQ_SDMA,
13 IRQ_RCVCTXT,
14 IRQ_NETDEVCTXT,
15 IRQ_GENERAL,
16 IRQ_OTHER
17};
18
19/* Can be used for both memory and cpu */
20enum affinity_flags {
21 AFF_AUTO,
22 AFF_NUMA_LOCAL,
23 AFF_DEV_LOCAL,
24 AFF_IRQ_LOCAL
25};
26
27struct cpu_mask_set {
28 struct cpumask mask;
29 struct cpumask used;
30 uint gen;
31};
32
33struct hfi1_msix_entry;
34
35/* Initialize non-HT cpu cores mask */
36void init_real_cpu_mask(void);
37/* Initialize driver affinity data */
38int hfi1_dev_affinity_init(struct hfi1_devdata *dd);
39/*
40 * Set IRQ affinity to a CPU. The function will determine the
41 * CPU and set the affinity to it.
42 */
43int hfi1_get_irq_affinity(struct hfi1_devdata *dd,
44 struct hfi1_msix_entry *msix);
45/*
46 * Remove the IRQ's CPU affinity. This function also updates
47 * any internal CPU tracking data
48 */
49void hfi1_put_irq_affinity(struct hfi1_devdata *dd,
50 struct hfi1_msix_entry *msix);
51/*
52 * Determine a CPU affinity for a user process, if the process does not
53 * have an affinity set yet.
54 */
55int hfi1_get_proc_affinity(int node);
56/* Release a CPU used by a user process. */
57void hfi1_put_proc_affinity(int cpu);
58
59struct hfi1_affinity_node {
60 int node;
61 u16 __percpu *comp_vect_affinity;
62 struct cpu_mask_set def_intr;
63 struct cpu_mask_set rcv_intr;
64 struct cpumask general_intr_mask;
65 struct cpumask comp_vect_mask;
66 struct list_head list;
67};
68
69struct hfi1_affinity_node_list {
70 struct list_head list;
71 struct cpumask real_cpu_mask;
72 struct cpu_mask_set proc;
73 int num_core_siblings;
74 int num_possible_nodes;
75 int num_online_nodes;
76 int num_online_cpus;
77 struct mutex lock; /* protects affinity nodes */
78};
79
80int node_affinity_init(void);
81void node_affinity_destroy_all(void);
82extern struct hfi1_affinity_node_list node_affinity;
83void hfi1_dev_affinity_clean_up(struct hfi1_devdata *dd);
84int hfi1_comp_vect_mappings_lookup(struct rvt_dev_info *rdi, int comp_vect);
85int hfi1_comp_vectors_set_up(struct hfi1_devdata *dd);
86void hfi1_comp_vectors_clean_up(struct hfi1_devdata *dd);
87
88#endif /* _HFI1_AFFINITY_H */
1/*
2 * Copyright(c) 2015 - 2020 Intel Corporation.
3 *
4 * This file is provided under a dual BSD/GPLv2 license. When using or
5 * redistributing this file, you may do so under either license.
6 *
7 * GPL LICENSE SUMMARY
8 *
9 * This program is free software; you can redistribute it and/or modify
10 * it under the terms of version 2 of the GNU General Public License as
11 * published by the Free Software Foundation.
12 *
13 * This program is distributed in the hope that it will be useful, but
14 * WITHOUT ANY WARRANTY; without even the implied warranty of
15 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
16 * General Public License for more details.
17 *
18 * BSD LICENSE
19 *
20 * Redistribution and use in source and binary forms, with or without
21 * modification, are permitted provided that the following conditions
22 * are met:
23 *
24 * - Redistributions of source code must retain the above copyright
25 * notice, this list of conditions and the following disclaimer.
26 * - Redistributions in binary form must reproduce the above copyright
27 * notice, this list of conditions and the following disclaimer in
28 * the documentation and/or other materials provided with the
29 * distribution.
30 * - Neither the name of Intel Corporation nor the names of its
31 * contributors may be used to endorse or promote products derived
32 * from this software without specific prior written permission.
33 *
34 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
35 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
36 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
37 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
38 * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
39 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
40 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
41 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
42 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
43 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
44 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
45 *
46 */
47#ifndef _HFI1_AFFINITY_H
48#define _HFI1_AFFINITY_H
49
50#include "hfi.h"
51
52enum irq_type {
53 IRQ_SDMA,
54 IRQ_RCVCTXT,
55 IRQ_NETDEVCTXT,
56 IRQ_GENERAL,
57 IRQ_OTHER
58};
59
60/* Can be used for both memory and cpu */
61enum affinity_flags {
62 AFF_AUTO,
63 AFF_NUMA_LOCAL,
64 AFF_DEV_LOCAL,
65 AFF_IRQ_LOCAL
66};
67
68struct cpu_mask_set {
69 struct cpumask mask;
70 struct cpumask used;
71 uint gen;
72};
73
74struct hfi1_msix_entry;
75
76/* Initialize non-HT cpu cores mask */
77void init_real_cpu_mask(void);
78/* Initialize driver affinity data */
79int hfi1_dev_affinity_init(struct hfi1_devdata *dd);
80/*
81 * Set IRQ affinity to a CPU. The function will determine the
82 * CPU and set the affinity to it.
83 */
84int hfi1_get_irq_affinity(struct hfi1_devdata *dd,
85 struct hfi1_msix_entry *msix);
86/*
87 * Remove the IRQ's CPU affinity. This function also updates
88 * any internal CPU tracking data
89 */
90void hfi1_put_irq_affinity(struct hfi1_devdata *dd,
91 struct hfi1_msix_entry *msix);
92/*
93 * Determine a CPU affinity for a user process, if the process does not
94 * have an affinity set yet.
95 */
96int hfi1_get_proc_affinity(int node);
97/* Release a CPU used by a user process. */
98void hfi1_put_proc_affinity(int cpu);
99
100struct hfi1_affinity_node {
101 int node;
102 u16 __percpu *comp_vect_affinity;
103 struct cpu_mask_set def_intr;
104 struct cpu_mask_set rcv_intr;
105 struct cpumask general_intr_mask;
106 struct cpumask comp_vect_mask;
107 struct list_head list;
108};
109
110struct hfi1_affinity_node_list {
111 struct list_head list;
112 struct cpumask real_cpu_mask;
113 struct cpu_mask_set proc;
114 int num_core_siblings;
115 int num_possible_nodes;
116 int num_online_nodes;
117 int num_online_cpus;
118 struct mutex lock; /* protects affinity nodes */
119};
120
121int node_affinity_init(void);
122void node_affinity_destroy_all(void);
123extern struct hfi1_affinity_node_list node_affinity;
124void hfi1_dev_affinity_clean_up(struct hfi1_devdata *dd);
125int hfi1_comp_vect_mappings_lookup(struct rvt_dev_info *rdi, int comp_vect);
126int hfi1_comp_vectors_set_up(struct hfi1_devdata *dd);
127void hfi1_comp_vectors_clean_up(struct hfi1_devdata *dd);
128
129#endif /* _HFI1_AFFINITY_H */