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_ARM64_PSEUDO_NMI
8 #include <asm/arch_gicv3.h>
9
10 struct arm_cpuidle_irq_context {
11 unsigned long pmr;
12 unsigned long daif_bits;
13 };
14
15 #define arm_cpuidle_save_irq_context(__c) \
16 do { \
17 struct arm_cpuidle_irq_context *c = __c; \
18 if (system_uses_irq_prio_masking()) { \
19 c->daif_bits = read_sysreg(daif); \
20 write_sysreg(c->daif_bits | PSR_I_BIT | PSR_F_BIT, \
21 daif); \
22 c->pmr = gic_read_pmr(); \
23 gic_write_pmr(GIC_PRIO_IRQON | GIC_PRIO_PSR_I_SET); \
24 } \
25 } while (0)
26
27 #define arm_cpuidle_restore_irq_context(__c) \
28 do { \
29 struct arm_cpuidle_irq_context *c = __c; \
30 if (system_uses_irq_prio_masking()) { \
31 gic_write_pmr(c->pmr); \
32 write_sysreg(c->daif_bits, daif); \
33 } \
34 } while (0)
35 #else
36 struct arm_cpuidle_irq_context { };
37
38 #define arm_cpuidle_save_irq_context(c) (void)c
39 #define arm_cpuidle_restore_irq_context(c) (void)c
40 #endif
41 #endif
42
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