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 */
89

source code of linux/drivers/infiniband/hw/hfi1/affinity.h