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) #ifndef _M68K_IRQFLAGS_H
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  3) #define _M68K_IRQFLAGS_H
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  4) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  5) #include <linux/types.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  6) #include <linux/preempt.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  7) #include <asm/thread_info.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  8) #include <asm/entry.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  9) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 10) static inline unsigned long arch_local_save_flags(void)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 11) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 12) 	unsigned long flags;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 13) 	asm volatile ("movew %%sr,%0" : "=d" (flags) : : "memory");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 14) 	return flags;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 15) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 16) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 17) static inline void arch_local_irq_disable(void)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 18) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 19) #ifdef CONFIG_COLDFIRE
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 20) 	asm volatile (
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 21) 		"move	%/sr,%%d0	\n\t"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 22) 		"ori.l	#0x0700,%%d0	\n\t"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 23) 		"move	%%d0,%/sr	\n"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 24) 		: /* no outputs */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 25) 		:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 26) 		: "cc", "%d0", "memory");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 27) #else
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 28) 	asm volatile ("oriw  #0x0700,%%sr" : : : "memory");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 29) #endif
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 30) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 31) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 32) static inline void arch_local_irq_enable(void)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 33) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 34) #if defined(CONFIG_COLDFIRE)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 35) 	asm volatile (
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 36) 		"move	%/sr,%%d0	\n\t"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 37) 		"andi.l	#0xf8ff,%%d0	\n\t"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 38) 		"move	%%d0,%/sr	\n"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 39) 		: /* no outputs */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 40) 		:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 41) 		: "cc", "%d0", "memory");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 42) #else
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 43) # if defined(CONFIG_MMU)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 44) 	if (MACH_IS_Q40 || !hardirq_count())
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 45) # endif
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 46) 		asm volatile (
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 47) 			"andiw %0,%%sr"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 48) 			:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 49) 			: "i" (ALLOWINT)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 50) 			: "memory");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 51) #endif
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 52) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 53) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 54) static inline unsigned long arch_local_irq_save(void)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 55) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 56) 	unsigned long flags = arch_local_save_flags();
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 57) 	arch_local_irq_disable();
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 58) 	return flags;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 59) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 60) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 61) static inline void arch_local_irq_restore(unsigned long flags)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 62) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 63) 	asm volatile ("movew %0,%%sr" : : "d" (flags) : "memory");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 64) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 65) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 66) static inline bool arch_irqs_disabled_flags(unsigned long flags)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 67) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 68) 	if (MACH_IS_ATARI) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 69) 		/* Ignore HSYNC = ipl 2 on Atari */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 70) 		return (flags & ~(ALLOWINT | 0x200)) != 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 71) 	}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 72) 	return (flags & ~ALLOWINT) != 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 73) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 74) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 75) static inline bool arch_irqs_disabled(void)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 76) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 77) 	return arch_irqs_disabled_flags(arch_local_save_flags());
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 78) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 79) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 80) #endif /* _M68K_IRQFLAGS_H */