/* * MIPS cacheinfo support * * This program is free software; you can redistribute it and/or modify * it under the terms of the GNU General Public License version 2 as * published by the Free Software Foundation. * * This program is distributed "as is" WITHOUT ANY WARRANTY of any * kind, whether express or implied; without even the implied warranty * of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the * GNU General Public License for more details. * * You should have received a copy of the GNU General Public License * along with this program. If not, see <http://www.gnu.org/licenses/>. */ #include <linux/cacheinfo.h> /* Populates leaf and increments to next leaf */ #define populate_cache(cache, leaf, c_level, c_type) \ do { \ leaf->type = c_type; \ leaf->level = c_level; \ leaf->coherency_line_size = c->cache.linesz; \ leaf->number_of_sets = c->cache.sets; \ leaf->ways_of_associativity = c->cache.ways; \ leaf->size = c->cache.linesz * c->cache.sets * \ c->cache.ways; \ leaf++; \ } while (0) static int __init_cache_level(unsigned int cpu) { struct cpuinfo_mips *c = ¤t_cpu_data; struct cpu_cacheinfo *this_cpu_ci = get_cpu_cacheinfo(cpu); int levels = 0, leaves = 0; /* * If Dcache is not set, we assume the cache structures * are not properly initialized. */ if (c->dcache.waysize) levels += 1; else return -ENOENT; leaves += (c->icache.waysize) ? 2 : 1; if (c->scache.waysize) { levels++; leaves++; } if (c->tcache.waysize) { levels++; leaves++; } this_cpu_ci->num_levels = levels; this_cpu_ci->num_leaves = leaves; return 0; } static int __populate_cache_leaves(unsigned int cpu) { struct cpuinfo_mips *c = ¤t_cpu_data; struct cpu_cacheinfo *this_cpu_ci = get_cpu_cacheinfo(cpu); struct cacheinfo *this_leaf = this_cpu_ci->info_list; if (c->icache.waysize) { populate_cache(dcache, this_leaf, 1, CACHE_TYPE_DATA); populate_cache(icache, this_leaf, 1, CACHE_TYPE_INST); } else { populate_cache(dcache, this_leaf, 1, CACHE_TYPE_UNIFIED); } if (c->scache.waysize) populate_cache(scache, this_leaf, 2, CACHE_TYPE_UNIFIED); if (c->tcache.waysize) populate_cache(tcache, this_leaf, 3, CACHE_TYPE_UNIFIED); return 0; } DEFINE_SMP_CALL_CACHE_FUNCTION(init_cache_level) DEFINE_SMP_CALL_CACHE_FUNCTION(populate_cache_leaves)