mirror of
https://github.com/AuxXxilium/linux_dsm_epyc7002.git
synced 2024-12-15 13:06:41 +07:00
c9af7f315d
Based on 1 normalized pattern(s): 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 extracted by the scancode license scanner the SPDX license identifier GPL-2.0-only has been chosen to replace the boilerplate/reference in 2 file(s). Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Reviewed-by: Richard Fontana <rfontana@redhat.com> Reviewed-by: Alexios Zavras <alexios.zavras@intel.com> Reviewed-by: Allison Randal <allison@lohutok.net> Reviewed-by: Kate Stewart <kstewart@linuxfoundation.org> Cc: linux-spdx@vger.kernel.org Link: https://lkml.kernel.org/r/20190529141332.617181045@linutronix.de Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
77 lines
1.8 KiB
C
77 lines
1.8 KiB
C
// SPDX-License-Identifier: GPL-2.0-only
|
|
/*
|
|
* MIPS cacheinfo support
|
|
*/
|
|
#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)
|