[mirror_ubuntu-bionic-kernel.git] / arch / arm64 / include / asm / cpu_ops.h

/*
 * Copyright (C) 2013 ARM Ltd.
 *
 * 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 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.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program.  If not, see <http://www.gnu.org/licenses/>.
 */
#ifndef __ASM_CPU_OPS_H
#define __ASM_CPU_OPS_H

#include <linux/init.h>
#include <linux/threads.h>

struct device_node;

/**
 * struct cpu_operations - Callback operations for hotplugging CPUs.
 *
 * @name:	Name of the property as appears in a devicetree cpu node's
 *		enable-method property.
 * @cpu_init:	Reads any data necessary for a specific enable-method from the
 *		devicetree, for a given cpu node and proposed logical id.
 * @cpu_prepare: Early one-time preparation step for a cpu. If there is a
 *		mechanism for doing so, tests whether it is possible to boot
 *		the given CPU.
 * @cpu_boot:	Boots a cpu into the kernel.
 * @cpu_postboot: Optionally, perform any post-boot cleanup or necesary
 *		synchronisation. Called from the cpu being booted.
 */
struct cpu_operations {
	const char	*name;
	int		(*cpu_init)(struct device_node *, unsigned int);
	int		(*cpu_prepare)(unsigned int);
	int		(*cpu_boot)(unsigned int);
	void		(*cpu_postboot)(void);
};

extern const struct cpu_operations *cpu_ops[NR_CPUS];
extern int __init cpu_read_ops(struct device_node *dn, int cpu);
extern void __init cpu_read_bootcpu_ops(void);

#endif /* ifndef __ASM_CPU_OPS_H */
Commit	Line	Data
cd1aebf5 MR	1	/*
	2	* Copyright (C) 2013 ARM Ltd.
	3	*
	4	* This program is free software; you can redistribute it and/or modify
	5	* it under the terms of the GNU General Public License version 2 as
	6	* published by the Free Software Foundation.
	7	*
	8	* This program is distributed in the hope that it will be useful,
	9	* but WITHOUT ANY WARRANTY; without even the implied warranty of
	10	* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
	11	* GNU General Public License for more details.
	12	*
	13	* You should have received a copy of the GNU General Public License
	14	* along with this program. If not, see <http://www.gnu.org/licenses/>.
	15	*/
	16	#ifndef __ASM_CPU_OPS_H
	17	#define __ASM_CPU_OPS_H
	18
	19	#include <linux/init.h>
	20	#include <linux/threads.h>
	21
	22	struct device_node;
	23
652af899 MR	24	/**
	25	* struct cpu_operations - Callback operations for hotplugging CPUs.
	26	*
	27	* @name: Name of the property as appears in a devicetree cpu node's
	28	* enable-method property.
	29	* @cpu_init: Reads any data necessary for a specific enable-method from the
	30	* devicetree, for a given cpu node and proposed logical id.
	31	* @cpu_prepare: Early one-time preparation step for a cpu. If there is a
	32	* mechanism for doing so, tests whether it is possible to boot
	33	* the given CPU.
	34	* @cpu_boot: Boots a cpu into the kernel.
	35	* @cpu_postboot: Optionally, perform any post-boot cleanup or necesary
	36	* synchronisation. Called from the cpu being booted.
	37	*/
cd1aebf5 MR	38	struct cpu_operations {
	39	const char *name;
	40	int (cpu_init)(struct device_node , unsigned int);
	41	int (*cpu_prepare)(unsigned int);
652af899 MR	42	int (*cpu_boot)(unsigned int);
652af899 MR	43	void (*cpu_postboot)(void);
cd1aebf5 MR	44	};
	45
	46	extern const struct cpu_operations *cpu_ops[NR_CPUS];
e8765b26 MR	47	extern int __init cpu_read_ops(struct device_node *dn, int cpu);
e8765b26 MR	48	extern void __init cpu_read_bootcpu_ops(void);
cd1aebf5 MR	49
cd1aebf5 MR	50	#endif /* ifndef __ASM_CPU_OPS_H */