diff options
Diffstat (limited to 'arch/riscv/kernel/cacheinfo.c')
| -rw-r--r-- | arch/riscv/kernel/cacheinfo.c | 32 |
1 files changed, 31 insertions, 1 deletions
diff --git a/arch/riscv/kernel/cacheinfo.c b/arch/riscv/kernel/cacheinfo.c index 291d7d8f748b..de59dd457b41 100644 --- a/arch/riscv/kernel/cacheinfo.c +++ b/arch/riscv/kernel/cacheinfo.c @@ -3,7 +3,6 @@ * Copyright (C) 2017 SiFive */ -#include <linux/cacheinfo.h> #include <linux/cpu.h> #include <linux/of.h> #include <linux/of_device.h> @@ -25,6 +24,37 @@ cache_get_priv_group(struct cacheinfo *this_leaf) return NULL; } +static struct cacheinfo *get_cacheinfo(u32 level, enum cache_type type) +{ + struct cpu_cacheinfo *this_cpu_ci = get_cpu_cacheinfo(smp_processor_id()); + struct cacheinfo *this_leaf; + int index; + + for (index = 0; index < this_cpu_ci->num_leaves; index++) { + this_leaf = this_cpu_ci->info_list + index; + if (this_leaf->level == level && this_leaf->type == type) + return this_leaf; + } + + return NULL; +} + +uintptr_t get_cache_size(u32 level, enum cache_type type) +{ + struct cacheinfo *this_leaf = get_cacheinfo(level, type); + + return this_leaf ? this_leaf->size : 0; +} + +uintptr_t get_cache_geometry(u32 level, enum cache_type type) +{ + struct cacheinfo *this_leaf = get_cacheinfo(level, type); + + return this_leaf ? (this_leaf->ways_of_associativity << 16 | + this_leaf->coherency_line_size) : + 0; +} + static void ci_leaf_init(struct cacheinfo *this_leaf, enum cache_type type, unsigned int level, unsigned int size, unsigned int sets, unsigned int line_size) |