cachepc-linux

Fork of AMDESE/linux with modifications for CachePC side-channel attack
git clone https://git.sinitax.com/sinitax/cachepc-linux
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smp-ops.h (2517B)

      1/*
      2 * This file is subject to the terms and conditions of the GNU General
      3 * Public License.  See the file "COPYING" in the main directory of this
      4 * archive for more details.
      5 *
      6 * Copyright (C) 2000 - 2001 by Kanoj Sarcar (kanoj@sgi.com)
      7 * Copyright (C) 2000 - 2001 by Silicon Graphics, Inc.
      8 * Copyright (C) 2000, 2001, 2002 Ralf Baechle
      9 * Copyright (C) 2000, 2001 Broadcom Corporation
     10 */
     11#ifndef __ASM_SMP_OPS_H
     12#define __ASM_SMP_OPS_H
     13
     14#include <linux/errno.h>
     15
     16#include <asm/mips-cps.h>
     17
     18#ifdef CONFIG_SMP
     19
     20#include <linux/cpumask.h>
     21
     22struct task_struct;
     23
     24struct plat_smp_ops {
     25	void (*send_ipi_single)(int cpu, unsigned int action);
     26	void (*send_ipi_mask)(const struct cpumask *mask, unsigned int action);
     27	void (*init_secondary)(void);
     28	void (*smp_finish)(void);
     29	int (*boot_secondary)(int cpu, struct task_struct *idle);
     30	void (*smp_setup)(void);
     31	void (*prepare_cpus)(unsigned int max_cpus);
     32	void (*prepare_boot_cpu)(void);
     33#ifdef CONFIG_HOTPLUG_CPU
     34	int (*cpu_disable)(void);
     35	void (*cpu_die)(unsigned int cpu);
     36#endif
     37#ifdef CONFIG_KEXEC
     38	void (*kexec_nonboot_cpu)(void);
     39#endif
     40};
     41
     42extern void register_smp_ops(const struct plat_smp_ops *ops);
     43
     44static inline void plat_smp_setup(void)
     45{
     46	extern const struct plat_smp_ops *mp_ops;	/* private */
     47
     48	mp_ops->smp_setup();
     49}
     50
     51extern void mips_smp_send_ipi_single(int cpu, unsigned int action);
     52extern void mips_smp_send_ipi_mask(const struct cpumask *mask,
     53				      unsigned int action);
     54
     55#else /* !CONFIG_SMP */
     56
     57struct plat_smp_ops;
     58
     59static inline void plat_smp_setup(void)
     60{
     61	/* UP, nothing to do ...  */
     62}
     63
     64static inline void register_smp_ops(const struct plat_smp_ops *ops)
     65{
     66}
     67
     68#endif /* !CONFIG_SMP */
     69
     70static inline int register_up_smp_ops(void)
     71{
     72#ifdef CONFIG_SMP_UP
     73	extern const struct plat_smp_ops up_smp_ops;
     74
     75	register_smp_ops(&up_smp_ops);
     76
     77	return 0;
     78#else
     79	return -ENODEV;
     80#endif
     81}
     82
     83static inline int register_cmp_smp_ops(void)
     84{
     85#ifdef CONFIG_MIPS_CMP
     86	extern const struct plat_smp_ops cmp_smp_ops;
     87
     88	if (!mips_cm_present())
     89		return -ENODEV;
     90
     91	register_smp_ops(&cmp_smp_ops);
     92
     93	return 0;
     94#else
     95	return -ENODEV;
     96#endif
     97}
     98
     99static inline int register_vsmp_smp_ops(void)
    100{
    101#ifdef CONFIG_MIPS_MT_SMP
    102	extern const struct plat_smp_ops vsmp_smp_ops;
    103
    104	if (!cpu_has_mipsmt)
    105		return -ENODEV;
    106
    107	register_smp_ops(&vsmp_smp_ops);
    108
    109	return 0;
    110#else
    111	return -ENODEV;
    112#endif
    113}
    114
    115#ifdef CONFIG_MIPS_CPS
    116extern int register_cps_smp_ops(void);
    117#else
    118static inline int register_cps_smp_ops(void)
    119{
    120	return -ENODEV;
    121}
    122#endif
    123
    124#endif /* __ASM_SMP_OPS_H */