50acfb2b76
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 as published by the free software foundation version 2 this program is distributed in the hope that it will be useful but without any warranty without even the implied warranty of merchantability or fitness for a particular purpose see the gnu general public license for more details extracted by the scancode license scanner the SPDX license identifier GPL-2.0-only has been chosen to replace the boilerplate/reference in 97 file(s). Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Reviewed-by: Allison Randal <allison@lohutok.net> Reviewed-by: Alexios Zavras <alexios.zavras@intel.com> Cc: linux-spdx@vger.kernel.org Link: https://lkml.kernel.org/r/20190529141901.025053186@linutronix.de Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
101 lines
2.6 KiB
C
101 lines
2.6 KiB
C
// SPDX-License-Identifier: GPL-2.0-only
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/*
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* Copyright (C) 2017 SiFive
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*/
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#include <linux/cacheinfo.h>
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#include <linux/cpu.h>
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#include <linux/of.h>
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#include <linux/of_device.h>
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static void ci_leaf_init(struct cacheinfo *this_leaf,
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struct device_node *node,
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enum cache_type type, unsigned int level)
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{
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this_leaf->level = level;
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this_leaf->type = type;
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}
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static int __init_cache_level(unsigned int cpu)
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{
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struct cpu_cacheinfo *this_cpu_ci = get_cpu_cacheinfo(cpu);
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struct device_node *np = of_cpu_device_node_get(cpu);
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struct device_node *prev = NULL;
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int levels = 0, leaves = 0, level;
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if (of_property_read_bool(np, "cache-size"))
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++leaves;
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if (of_property_read_bool(np, "i-cache-size"))
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++leaves;
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if (of_property_read_bool(np, "d-cache-size"))
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++leaves;
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if (leaves > 0)
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levels = 1;
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prev = np;
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while ((np = of_find_next_cache_node(np))) {
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of_node_put(prev);
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prev = np;
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if (!of_device_is_compatible(np, "cache"))
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break;
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if (of_property_read_u32(np, "cache-level", &level))
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break;
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if (level <= levels)
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break;
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if (of_property_read_bool(np, "cache-size"))
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++leaves;
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if (of_property_read_bool(np, "i-cache-size"))
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++leaves;
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if (of_property_read_bool(np, "d-cache-size"))
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++leaves;
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levels = level;
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}
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of_node_put(np);
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this_cpu_ci->num_levels = levels;
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this_cpu_ci->num_leaves = leaves;
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return 0;
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}
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static int __populate_cache_leaves(unsigned int cpu)
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{
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struct cpu_cacheinfo *this_cpu_ci = get_cpu_cacheinfo(cpu);
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struct cacheinfo *this_leaf = this_cpu_ci->info_list;
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struct device_node *np = of_cpu_device_node_get(cpu);
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struct device_node *prev = NULL;
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int levels = 1, level = 1;
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if (of_property_read_bool(np, "cache-size"))
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ci_leaf_init(this_leaf++, np, CACHE_TYPE_UNIFIED, level);
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if (of_property_read_bool(np, "i-cache-size"))
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ci_leaf_init(this_leaf++, np, CACHE_TYPE_INST, level);
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if (of_property_read_bool(np, "d-cache-size"))
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ci_leaf_init(this_leaf++, np, CACHE_TYPE_DATA, level);
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prev = np;
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while ((np = of_find_next_cache_node(np))) {
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of_node_put(prev);
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prev = np;
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if (!of_device_is_compatible(np, "cache"))
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break;
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if (of_property_read_u32(np, "cache-level", &level))
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break;
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if (level <= levels)
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break;
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if (of_property_read_bool(np, "cache-size"))
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ci_leaf_init(this_leaf++, np, CACHE_TYPE_UNIFIED, level);
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if (of_property_read_bool(np, "i-cache-size"))
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ci_leaf_init(this_leaf++, np, CACHE_TYPE_INST, level);
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if (of_property_read_bool(np, "d-cache-size"))
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ci_leaf_init(this_leaf++, np, CACHE_TYPE_DATA, level);
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levels = level;
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}
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of_node_put(np);
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return 0;
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}
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DEFINE_SMP_CALL_CACHE_FUNCTION(init_cache_level)
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DEFINE_SMP_CALL_CACHE_FUNCTION(populate_cache_leaves)
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