diff options
Diffstat (limited to 'arch/arm64/include/asm/cpuidle.h')
| -rw-r--r-- | arch/arm64/include/asm/cpuidle.h | 42 |
1 files changed, 31 insertions, 11 deletions
diff --git a/arch/arm64/include/asm/cpuidle.h b/arch/arm64/include/asm/cpuidle.h index 3c5ddb429ea2..2047713e097d 100644 --- a/arch/arm64/include/asm/cpuidle.h +++ b/arch/arm64/include/asm/cpuidle.h @@ -4,18 +4,38 @@ #include <asm/proc-fns.h> -#ifdef CONFIG_CPU_IDLE -extern int arm_cpuidle_init(unsigned int cpu); -extern int arm_cpuidle_suspend(int index); +#ifdef CONFIG_ARM64_PSEUDO_NMI +#include <asm/arch_gicv3.h> + +struct arm_cpuidle_irq_context { + unsigned long pmr; + unsigned long daif_bits; +}; + +#define arm_cpuidle_save_irq_context(__c) \ + do { \ + struct arm_cpuidle_irq_context *c = __c; \ + if (system_uses_irq_prio_masking()) { \ + c->daif_bits = read_sysreg(daif); \ + write_sysreg(c->daif_bits | PSR_I_BIT | PSR_F_BIT, \ + daif); \ + c->pmr = gic_read_pmr(); \ + gic_write_pmr(GIC_PRIO_IRQON | GIC_PRIO_PSR_I_SET); \ + } \ + } while (0) + +#define arm_cpuidle_restore_irq_context(__c) \ + do { \ + struct arm_cpuidle_irq_context *c = __c; \ + if (system_uses_irq_prio_masking()) { \ + gic_write_pmr(c->pmr); \ + write_sysreg(c->daif_bits, daif); \ + } \ + } while (0) #else -static inline int arm_cpuidle_init(unsigned int cpu) -{ - return -EOPNOTSUPP; -} +struct arm_cpuidle_irq_context { }; -static inline int arm_cpuidle_suspend(int index) -{ - return -EOPNOTSUPP; -} +#define arm_cpuidle_save_irq_context(c) (void)c +#define arm_cpuidle_restore_irq_context(c) (void)c #endif #endif |