1 // SPDX-License-Identifier: GPL-2.0-only
3 * MIPS cacheinfo support
5 #include <linux/cacheinfo.h>
7 /* Populates leaf and increments to next leaf */
8 #define populate_cache(cache, leaf, c_level, c_type) \
10 leaf->type = c_type; \
11 leaf->level = c_level; \
12 leaf->coherency_line_size = c->cache.linesz; \
13 leaf->number_of_sets = c->cache.sets; \
14 leaf->ways_of_associativity = c->cache.ways; \
15 leaf->size = c->cache.linesz * c->cache.sets * \
20 static int __init_cache_level(unsigned int cpu)
22 struct cpuinfo_mips *c = ¤t_cpu_data;
23 struct cpu_cacheinfo *this_cpu_ci = get_cpu_cacheinfo(cpu);
24 int levels = 0, leaves = 0;
27 * If Dcache is not set, we assume the cache structures
28 * are not properly initialized.
30 if (c->dcache.waysize)
36 leaves += (c->icache.waysize) ? 2 : 1;
38 if (c->scache.waysize) {
43 if (c->tcache.waysize) {
48 this_cpu_ci->num_levels = levels;
49 this_cpu_ci->num_leaves = leaves;
53 static int __populate_cache_leaves(unsigned int cpu)
55 struct cpuinfo_mips *c = ¤t_cpu_data;
56 struct cpu_cacheinfo *this_cpu_ci = get_cpu_cacheinfo(cpu);
57 struct cacheinfo *this_leaf = this_cpu_ci->info_list;
59 if (c->icache.waysize) {
60 populate_cache(dcache, this_leaf, 1, CACHE_TYPE_DATA);
61 populate_cache(icache, this_leaf, 1, CACHE_TYPE_INST);
63 populate_cache(dcache, this_leaf, 1, CACHE_TYPE_UNIFIED);
66 if (c->scache.waysize)
67 populate_cache(scache, this_leaf, 2, CACHE_TYPE_UNIFIED);
69 if (c->tcache.waysize)
70 populate_cache(tcache, this_leaf, 3, CACHE_TYPE_UNIFIED);
75 DEFINE_SMP_CALL_CACHE_FUNCTION(init_cache_level)
76 DEFINE_SMP_CALL_CACHE_FUNCTION(populate_cache_leaves)