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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cpuidle.h (1330B)

      1/* SPDX-License-Identifier: GPL-2.0 */
      2#ifndef __ASM_CPUIDLE_H
      3#define __ASM_CPUIDLE_H
      4
      5#include <asm/proc-fns.h>
      6
      7#ifdef CONFIG_CPU_IDLE
      8extern int arm_cpuidle_init(unsigned int cpu);
      9extern int arm_cpuidle_suspend(int index);
     10#else
     11static inline int arm_cpuidle_init(unsigned int cpu)
     12{
     13	return -EOPNOTSUPP;
     14}
     15
     16static inline int arm_cpuidle_suspend(int index)
     17{
     18	return -EOPNOTSUPP;
     19}
     20#endif
     21
     22#ifdef CONFIG_ARM64_PSEUDO_NMI
     23#include <asm/arch_gicv3.h>
     24
     25struct arm_cpuidle_irq_context {
     26	unsigned long pmr;
     27	unsigned long daif_bits;
     28};
     29
     30#define arm_cpuidle_save_irq_context(__c)				\
     31	do {								\
     32		struct arm_cpuidle_irq_context *c = __c;		\
     33		if (system_uses_irq_prio_masking()) {			\
     34			c->daif_bits = read_sysreg(daif);		\
     35			write_sysreg(c->daif_bits | PSR_I_BIT | PSR_F_BIT, \
     36				     daif);				\
     37			c->pmr = gic_read_pmr();			\
     38			gic_write_pmr(GIC_PRIO_IRQON | GIC_PRIO_PSR_I_SET); \
     39		}							\
     40	} while (0)
     41
     42#define arm_cpuidle_restore_irq_context(__c)				\
     43	do {								\
     44		struct arm_cpuidle_irq_context *c = __c;		\
     45		if (system_uses_irq_prio_masking()) {			\
     46			gic_write_pmr(c->pmr);				\
     47			write_sysreg(c->daif_bits, daif);		\
     48		}							\
     49	} while (0)
     50#else
     51struct arm_cpuidle_irq_context { };
     52
     53#define arm_cpuidle_save_irq_context(c)		(void)c
     54#define arm_cpuidle_restore_irq_context(c)	(void)c
     55#endif
     56#endif