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1// SPDX-License-Identifier: GPL-2.0-only
2/*
3 * Copyright (C) 2017 SiFive
4 */
5
6#include <linux/cacheinfo.h>
7#include <linux/cpu.h>
8#include <linux/of.h>
9#include <linux/of_device.h>
10
11static void ci_leaf_init(struct cacheinfo *this_leaf,
12 struct device_node *node,
13 enum cache_type type, unsigned int level)
14{
15 this_leaf->level = level;
16 this_leaf->type = type;
17}
18
19static int __init_cache_level(unsigned int cpu)
20{
21 struct cpu_cacheinfo *this_cpu_ci = get_cpu_cacheinfo(cpu);
22 struct device_node *np = of_cpu_device_node_get(cpu);
23 struct device_node *prev = NULL;
24 int levels = 0, leaves = 0, level;
25
26 if (of_property_read_bool(np, "cache-size"))
27 ++leaves;
28 if (of_property_read_bool(np, "i-cache-size"))
29 ++leaves;
30 if (of_property_read_bool(np, "d-cache-size"))
31 ++leaves;
32 if (leaves > 0)
33 levels = 1;
34
35 prev = np;
36 while ((np = of_find_next_cache_node(np))) {
37 of_node_put(prev);
38 prev = np;
39 if (!of_device_is_compatible(np, "cache"))
40 break;
41 if (of_property_read_u32(np, "cache-level", &level))
42 break;
43 if (level <= levels)
44 break;
45 if (of_property_read_bool(np, "cache-size"))
46 ++leaves;
47 if (of_property_read_bool(np, "i-cache-size"))
48 ++leaves;
49 if (of_property_read_bool(np, "d-cache-size"))
50 ++leaves;
51 levels = level;
52 }
53
54 of_node_put(np);
55 this_cpu_ci->num_levels = levels;
56 this_cpu_ci->num_leaves = leaves;
57
58 return 0;
59}
60
61static int __populate_cache_leaves(unsigned int cpu)
62{
63 struct cpu_cacheinfo *this_cpu_ci = get_cpu_cacheinfo(cpu);
64 struct cacheinfo *this_leaf = this_cpu_ci->info_list;
65 struct device_node *np = of_cpu_device_node_get(cpu);
66 struct device_node *prev = NULL;
67 int levels = 1, level = 1;
68
69 if (of_property_read_bool(np, "cache-size"))
70 ci_leaf_init(this_leaf++, np, CACHE_TYPE_UNIFIED, level);
71 if (of_property_read_bool(np, "i-cache-size"))
72 ci_leaf_init(this_leaf++, np, CACHE_TYPE_INST, level);
73 if (of_property_read_bool(np, "d-cache-size"))
74 ci_leaf_init(this_leaf++, np, CACHE_TYPE_DATA, level);
75
76 prev = np;
77 while ((np = of_find_next_cache_node(np))) {
78 of_node_put(prev);
79 prev = np;
80 if (!of_device_is_compatible(np, "cache"))
81 break;
82 if (of_property_read_u32(np, "cache-level", &level))
83 break;
84 if (level <= levels)
85 break;
86 if (of_property_read_bool(np, "cache-size"))
87 ci_leaf_init(this_leaf++, np, CACHE_TYPE_UNIFIED, level);
88 if (of_property_read_bool(np, "i-cache-size"))
89 ci_leaf_init(this_leaf++, np, CACHE_TYPE_INST, level);
90 if (of_property_read_bool(np, "d-cache-size"))
91 ci_leaf_init(this_leaf++, np, CACHE_TYPE_DATA, level);
92 levels = level;
93 }
94 of_node_put(np);
95
96 return 0;
97}
98
99DEFINE_SMP_CALL_CACHE_FUNCTION(init_cache_level)
100DEFINE_SMP_CALL_CACHE_FUNCTION(populate_cache_leaves)
1// SPDX-License-Identifier: GPL-2.0-only
2/*
3 * Copyright (C) 2017 SiFive
4 */
5
6#include <linux/cacheinfo.h>
7#include <linux/cpu.h>
8#include <linux/of.h>
9#include <linux/of_device.h>
10#include <asm/cacheinfo.h>
11
12static struct riscv_cacheinfo_ops *rv_cache_ops;
13
14void riscv_set_cacheinfo_ops(struct riscv_cacheinfo_ops *ops)
15{
16 rv_cache_ops = ops;
17}
18EXPORT_SYMBOL_GPL(riscv_set_cacheinfo_ops);
19
20const struct attribute_group *
21cache_get_priv_group(struct cacheinfo *this_leaf)
22{
23 if (rv_cache_ops && rv_cache_ops->get_priv_group)
24 return rv_cache_ops->get_priv_group(this_leaf);
25 return NULL;
26}
27
28static void ci_leaf_init(struct cacheinfo *this_leaf,
29 struct device_node *node,
30 enum cache_type type, unsigned int level)
31{
32 this_leaf->level = level;
33 this_leaf->type = type;
34}
35
36static int __init_cache_level(unsigned int cpu)
37{
38 struct cpu_cacheinfo *this_cpu_ci = get_cpu_cacheinfo(cpu);
39 struct device_node *np = of_cpu_device_node_get(cpu);
40 struct device_node *prev = NULL;
41 int levels = 0, leaves = 0, level;
42
43 if (of_property_read_bool(np, "cache-size"))
44 ++leaves;
45 if (of_property_read_bool(np, "i-cache-size"))
46 ++leaves;
47 if (of_property_read_bool(np, "d-cache-size"))
48 ++leaves;
49 if (leaves > 0)
50 levels = 1;
51
52 prev = np;
53 while ((np = of_find_next_cache_node(np))) {
54 of_node_put(prev);
55 prev = np;
56 if (!of_device_is_compatible(np, "cache"))
57 break;
58 if (of_property_read_u32(np, "cache-level", &level))
59 break;
60 if (level <= levels)
61 break;
62 if (of_property_read_bool(np, "cache-size"))
63 ++leaves;
64 if (of_property_read_bool(np, "i-cache-size"))
65 ++leaves;
66 if (of_property_read_bool(np, "d-cache-size"))
67 ++leaves;
68 levels = level;
69 }
70
71 of_node_put(np);
72 this_cpu_ci->num_levels = levels;
73 this_cpu_ci->num_leaves = leaves;
74
75 return 0;
76}
77
78static int __populate_cache_leaves(unsigned int cpu)
79{
80 struct cpu_cacheinfo *this_cpu_ci = get_cpu_cacheinfo(cpu);
81 struct cacheinfo *this_leaf = this_cpu_ci->info_list;
82 struct device_node *np = of_cpu_device_node_get(cpu);
83 struct device_node *prev = NULL;
84 int levels = 1, level = 1;
85
86 if (of_property_read_bool(np, "cache-size"))
87 ci_leaf_init(this_leaf++, np, CACHE_TYPE_UNIFIED, level);
88 if (of_property_read_bool(np, "i-cache-size"))
89 ci_leaf_init(this_leaf++, np, CACHE_TYPE_INST, level);
90 if (of_property_read_bool(np, "d-cache-size"))
91 ci_leaf_init(this_leaf++, np, CACHE_TYPE_DATA, level);
92
93 prev = np;
94 while ((np = of_find_next_cache_node(np))) {
95 of_node_put(prev);
96 prev = np;
97 if (!of_device_is_compatible(np, "cache"))
98 break;
99 if (of_property_read_u32(np, "cache-level", &level))
100 break;
101 if (level <= levels)
102 break;
103 if (of_property_read_bool(np, "cache-size"))
104 ci_leaf_init(this_leaf++, np, CACHE_TYPE_UNIFIED, level);
105 if (of_property_read_bool(np, "i-cache-size"))
106 ci_leaf_init(this_leaf++, np, CACHE_TYPE_INST, level);
107 if (of_property_read_bool(np, "d-cache-size"))
108 ci_leaf_init(this_leaf++, np, CACHE_TYPE_DATA, level);
109 levels = level;
110 }
111 of_node_put(np);
112
113 return 0;
114}
115
116DEFINE_SMP_CALL_CACHE_FUNCTION(init_cache_level)
117DEFINE_SMP_CALL_CACHE_FUNCTION(populate_cache_leaves)