Orange Pi5 kernel

^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  1) /* SPDX-License-Identifier: GPL-2.0 */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  2) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  3)  * Copyright (C) 1999 Cort Dougan <cort@cs.nmt.edu>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  4)  */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  5) #ifndef _ASM_POWERPC_RUNLATCH_H
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  6) #define _ASM_POWERPC_RUNLATCH_H
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  7) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  8) #ifdef CONFIG_PPC64
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  9) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 10) extern void __ppc64_runlatch_on(void);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 11) extern void __ppc64_runlatch_off(void);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 12) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 13) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 14)  * We manually hard enable-disable, this is called
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 15)  * in the idle loop and we don't want to mess up
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 16)  * with soft-disable/enable & interrupt replay.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 17)  */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 18) #define ppc64_runlatch_off()					\
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 19) 	do {							\
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 20) 		if (cpu_has_feature(CPU_FTR_CTRL) &&		\
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 21) 		    test_thread_local_flags(_TLF_RUNLATCH)) {	\
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 22) 			unsigned long msr = mfmsr();		\
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 23) 			__hard_irq_disable();			\
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 24) 			__ppc64_runlatch_off();			\
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 25) 			if (msr & MSR_EE)			\
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 26) 				__hard_irq_enable();		\
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 27) 		}      						\
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 28) 	} while (0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 29) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 30) #define ppc64_runlatch_on()					\
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 31) 	do {							\
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 32) 		if (cpu_has_feature(CPU_FTR_CTRL) &&		\
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 33) 		    !test_thread_local_flags(_TLF_RUNLATCH)) {	\
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 34) 			unsigned long msr = mfmsr();		\
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 35) 			__hard_irq_disable();			\
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 36) 			__ppc64_runlatch_on();			\
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 37) 			if (msr & MSR_EE)			\
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 38) 				__hard_irq_enable();		\
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 39) 		}      						\
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 40) 	} while (0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 41) #else
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 42) #define ppc64_runlatch_on()
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 43) #define ppc64_runlatch_off()
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 44) #endif /* CONFIG_PPC64 */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 45) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 46) #endif /* _ASM_POWERPC_RUNLATCH_H */