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linux/arch/riscv/kernel/cacheinfo.c

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treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 286 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>
2019-05-29 17:18:00 +03:00
// SPDX-License-Identifier: GPL-2.0-only
RISC-V: Init and Halt Code This contains the various __init C functions, the initial assembly kernel entry point, and the code to reset the system. When a file was init-related this patch contains the entire file. Signed-off-by: Palmer Dabbelt <palmer@dabbelt.com>
2017-07-11 04:00:26 +03:00
/*
* Copyright (C) 2017 SiFive
*/
#include <linux/cacheinfo.h>
#include <linux/cpu.h>
#include <linux/of.h>
#include <linux/of_device.h>
static void ci_leaf_init(struct cacheinfo *this_leaf,
struct device_node *node,
enum cache_type type, unsigned int level)
{
this_leaf->level = level;
this_leaf->type = type;
}
static int __init_cache_level(unsigned int cpu)
{
struct cpu_cacheinfo *this_cpu_ci = get_cpu_cacheinfo(cpu);
struct device_node *np = of_cpu_device_node_get(cpu);
RISC-V: Fix of_node_* refcount Fix of_node* refcount at various places by using of_node_put. Signed-off-by: Atish Patra <atish.patra@wdc.com> Signed-off-by: Palmer Dabbelt <palmer@sifive.com>
2018-11-21 02:07:50 +03:00
struct device_node *prev = NULL;
RISC-V: Init and Halt Code This contains the various __init C functions, the initial assembly kernel entry point, and the code to reset the system. When a file was init-related this patch contains the entire file. Signed-off-by: Palmer Dabbelt <palmer@dabbelt.com>
2017-07-11 04:00:26 +03:00
int levels = 0, leaves = 0, level;
if (of_property_read_bool(np, "cache-size"))
++leaves;
if (of_property_read_bool(np, "i-cache-size"))
++leaves;
if (of_property_read_bool(np, "d-cache-size"))
++leaves;
if (leaves > 0)
levels = 1;
RISC-V: Fix of_node_* refcount Fix of_node* refcount at various places by using of_node_put. Signed-off-by: Atish Patra <atish.patra@wdc.com> Signed-off-by: Palmer Dabbelt <palmer@sifive.com>
2018-11-21 02:07:50 +03:00
prev = np;
RISC-V: Init and Halt Code This contains the various __init C functions, the initial assembly kernel entry point, and the code to reset the system. When a file was init-related this patch contains the entire file. Signed-off-by: Palmer Dabbelt <palmer@dabbelt.com>
2017-07-11 04:00:26 +03:00
while ((np = of_find_next_cache_node(np))) {
RISC-V: Fix of_node_* refcount Fix of_node* refcount at various places by using of_node_put. Signed-off-by: Atish Patra <atish.patra@wdc.com> Signed-off-by: Palmer Dabbelt <palmer@sifive.com>
2018-11-21 02:07:50 +03:00
of_node_put(prev);
prev = np;
RISC-V: Init and Halt Code This contains the various __init C functions, the initial assembly kernel entry point, and the code to reset the system. When a file was init-related this patch contains the entire file. Signed-off-by: Palmer Dabbelt <palmer@dabbelt.com>
2017-07-11 04:00:26 +03:00
if (!of_device_is_compatible(np, "cache"))
break;
if (of_property_read_u32(np, "cache-level", &level))
break;
if (level <= levels)
break;
if (of_property_read_bool(np, "cache-size"))
++leaves;
if (of_property_read_bool(np, "i-cache-size"))
++leaves;
if (of_property_read_bool(np, "d-cache-size"))
++leaves;
levels = level;
}
RISC-V: Fix of_node_* refcount Fix of_node* refcount at various places by using of_node_put. Signed-off-by: Atish Patra <atish.patra@wdc.com> Signed-off-by: Palmer Dabbelt <palmer@sifive.com>
2018-11-21 02:07:50 +03:00
of_node_put(np);
RISC-V: Init and Halt Code This contains the various __init C functions, the initial assembly kernel entry point, and the code to reset the system. When a file was init-related this patch contains the entire file. Signed-off-by: Palmer Dabbelt <palmer@dabbelt.com>
2017-07-11 04:00:26 +03:00
this_cpu_ci->num_levels = levels;
this_cpu_ci->num_leaves = leaves;
RISC-V: Fix of_node_* refcount Fix of_node* refcount at various places by using of_node_put. Signed-off-by: Atish Patra <atish.patra@wdc.com> Signed-off-by: Palmer Dabbelt <palmer@sifive.com>
2018-11-21 02:07:50 +03:00
RISC-V: Init and Halt Code This contains the various __init C functions, the initial assembly kernel entry point, and the code to reset the system. When a file was init-related this patch contains the entire file. Signed-off-by: Palmer Dabbelt <palmer@dabbelt.com>
2017-07-11 04:00:26 +03:00
return 0;
}
static int __populate_cache_leaves(unsigned int cpu)
{
struct cpu_cacheinfo *this_cpu_ci = get_cpu_cacheinfo(cpu);
struct cacheinfo *this_leaf = this_cpu_ci->info_list;
struct device_node *np = of_cpu_device_node_get(cpu);
RISC-V: Fix of_node_* refcount Fix of_node* refcount at various places by using of_node_put. Signed-off-by: Atish Patra <atish.patra@wdc.com> Signed-off-by: Palmer Dabbelt <palmer@sifive.com>
2018-11-21 02:07:50 +03:00
struct device_node *prev = NULL;
RISC-V: Init and Halt Code This contains the various __init C functions, the initial assembly kernel entry point, and the code to reset the system. When a file was init-related this patch contains the entire file. Signed-off-by: Palmer Dabbelt <palmer@dabbelt.com>
2017-07-11 04:00:26 +03:00
int levels = 1, level = 1;
if (of_property_read_bool(np, "cache-size"))
ci_leaf_init(this_leaf++, np, CACHE_TYPE_UNIFIED, level);
if (of_property_read_bool(np, "i-cache-size"))
ci_leaf_init(this_leaf++, np, CACHE_TYPE_INST, level);
if (of_property_read_bool(np, "d-cache-size"))
ci_leaf_init(this_leaf++, np, CACHE_TYPE_DATA, level);
RISC-V: Fix of_node_* refcount Fix of_node* refcount at various places by using of_node_put. Signed-off-by: Atish Patra <atish.patra@wdc.com> Signed-off-by: Palmer Dabbelt <palmer@sifive.com>
2018-11-21 02:07:50 +03:00
prev = np;
RISC-V: Init and Halt Code This contains the various __init C functions, the initial assembly kernel entry point, and the code to reset the system. When a file was init-related this patch contains the entire file. Signed-off-by: Palmer Dabbelt <palmer@dabbelt.com>
2017-07-11 04:00:26 +03:00
while ((np = of_find_next_cache_node(np))) {
RISC-V: Fix of_node_* refcount Fix of_node* refcount at various places by using of_node_put. Signed-off-by: Atish Patra <atish.patra@wdc.com> Signed-off-by: Palmer Dabbelt <palmer@sifive.com>
2018-11-21 02:07:50 +03:00
of_node_put(prev);
prev = np;
RISC-V: Init and Halt Code This contains the various __init C functions, the initial assembly kernel entry point, and the code to reset the system. When a file was init-related this patch contains the entire file. Signed-off-by: Palmer Dabbelt <palmer@dabbelt.com>
2017-07-11 04:00:26 +03:00
if (!of_device_is_compatible(np, "cache"))
break;
if (of_property_read_u32(np, "cache-level", &level))
break;
if (level <= levels)
break;
if (of_property_read_bool(np, "cache-size"))
ci_leaf_init(this_leaf++, np, CACHE_TYPE_UNIFIED, level);
if (of_property_read_bool(np, "i-cache-size"))
ci_leaf_init(this_leaf++, np, CACHE_TYPE_INST, level);
if (of_property_read_bool(np, "d-cache-size"))
ci_leaf_init(this_leaf++, np, CACHE_TYPE_DATA, level);
levels = level;
}
RISC-V: Fix of_node_* refcount Fix of_node* refcount at various places by using of_node_put. Signed-off-by: Atish Patra <atish.patra@wdc.com> Signed-off-by: Palmer Dabbelt <palmer@sifive.com>
2018-11-21 02:07:50 +03:00
of_node_put(np);
RISC-V: Init and Halt Code This contains the various __init C functions, the initial assembly kernel entry point, and the code to reset the system. When a file was init-related this patch contains the entire file. Signed-off-by: Palmer Dabbelt <palmer@dabbelt.com>
2017-07-11 04:00:26 +03:00
return 0;
}
DEFINE_SMP_CALL_CACHE_FUNCTION(init_cache_level)
DEFINE_SMP_CALL_CACHE_FUNCTION(populate_cache_leaves)
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