1 /*
2 * Copyright(c) 2015 - 2018 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
52 enum irq_type {
53 IRQ_SDMA,
54 IRQ_RCVCTXT,
55 IRQ_GENERAL,
56 IRQ_OTHER
57 };
58
59 /* Can be used for both memory and cpu */
60 enum affinity_flags {
61 AFF_AUTO,
62 AFF_NUMA_LOCAL,
63 AFF_DEV_LOCAL,
64 AFF_IRQ_LOCAL
65 };
66
67 struct cpu_mask_set {
68 struct cpumask mask;
69 struct cpumask used;
70 uint gen;
71 };
72
73 struct hfi1_msix_entry;
74
75 /* Initialize non-HT cpu cores mask */
76 void init_real_cpu_mask(void);
77 /* Initialize driver affinity data */
78 int hfi1_dev_affinity_init(struct hfi1_devdata *dd);
79 /*
80 * Set IRQ affinity to a CPU. The function will determine the
81 * CPU and set the affinity to it.
82 */
83 int hfi1_get_irq_affinity(struct hfi1_devdata *dd,
84 struct hfi1_msix_entry *msix);
85 /*
86 * Remove the IRQ's CPU affinity. This function also updates
87 * any internal CPU tracking data
88 */
89 void hfi1_put_irq_affinity(struct hfi1_devdata *dd,
90 struct hfi1_msix_entry *msix);
91 /*
92 * Determine a CPU affinity for a user process, if the process does not
93 * have an affinity set yet.
94 */
95 int hfi1_get_proc_affinity(int node);
96 /* Release a CPU used by a user process. */
97 void hfi1_put_proc_affinity(int cpu);
98
99 struct hfi1_affinity_node {
100 int node;
101 u16 __percpu *comp_vect_affinity;
102 struct cpu_mask_set def_intr;
103 struct cpu_mask_set rcv_intr;
104 struct cpumask general_intr_mask;
105 struct cpumask comp_vect_mask;
106 struct list_head list;
107 };
108
109 struct hfi1_affinity_node_list {
110 struct list_head list;
111 struct cpumask real_cpu_mask;
112 struct cpu_mask_set proc;
113 int num_core_siblings;
114 int num_possible_nodes;
115 int num_online_nodes;
116 int num_online_cpus;
117 struct mutex lock; /* protects affinity nodes */
118 };
119
120 int node_affinity_init(void);
121 void node_affinity_destroy_all(void);
122 extern struct hfi1_affinity_node_list node_affinity;
123 void hfi1_dev_affinity_clean_up(struct hfi1_devdata *dd);
124 int hfi1_comp_vect_mappings_lookup(struct rvt_dev_info *rdi, int comp_vect);
125 int hfi1_comp_vectors_set_up(struct hfi1_devdata *dd);
126 void hfi1_comp_vectors_clean_up(struct hfi1_devdata *dd);
127
128 #endif /* _HFI1_AFFINITY_H */