^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) 2006 Atmark Techno, Inc.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6) #ifndef _ASM_MICROBLAZE_IRQFLAGS_H
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 7) #define _ASM_MICROBLAZE_IRQFLAGS_H
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 8)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 9) #include <linux/types.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 10) #include <asm/registers.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 11)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 12) #if CONFIG_XILINX_MICROBLAZE0_USE_MSR_INSTR
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 13)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 14) static inline notrace unsigned long arch_local_irq_save(void)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 15) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 16) unsigned long flags;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 17) asm volatile(" msrclr %0, %1 \n"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 18) " nop \n"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 19) : "=r"(flags)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 20) : "i"(MSR_IE)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 21) : "memory");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 22) return flags;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 23) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 24)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 25) static inline notrace void arch_local_irq_disable(void)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 26) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 27) /* this uses r0 without declaring it - is that correct? */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 28) asm volatile(" msrclr r0, %0 \n"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 29) " nop \n"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 30) :
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 31) : "i"(MSR_IE)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 32) : "memory");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 33) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 34)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 35) static inline notrace void arch_local_irq_enable(void)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 36) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 37) /* this uses r0 without declaring it - is that correct? */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 38) asm volatile(" msrset r0, %0 \n"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 39) " nop \n"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 40) :
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 41) : "i"(MSR_IE)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 42) : "memory");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 43) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 44)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 45) #else /* !CONFIG_XILINX_MICROBLAZE0_USE_MSR_INSTR */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 46)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 47) static inline notrace unsigned long arch_local_irq_save(void)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 48) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 49) unsigned long flags, tmp;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 50) asm volatile (" mfs %0, rmsr \n"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 51) " nop \n"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 52) " andi %1, %0, %2 \n"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 53) " mts rmsr, %1 \n"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 54) " nop \n"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 55) : "=r"(flags), "=r"(tmp)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 56) : "i"(~MSR_IE)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 57) : "memory");
^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 notrace void arch_local_irq_disable(void)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 62) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 63) unsigned long tmp;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 64) asm volatile(" mfs %0, rmsr \n"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 65) " nop \n"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 66) " andi %0, %0, %1 \n"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 67) " mts rmsr, %0 \n"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 68) " nop \n"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 69) : "=r"(tmp)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 70) : "i"(~MSR_IE)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 71) : "memory");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 72) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 73)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 74) static inline notrace void arch_local_irq_enable(void)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 75) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 76) unsigned long tmp;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 77) asm volatile(" mfs %0, rmsr \n"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 78) " nop \n"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 79) " ori %0, %0, %1 \n"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 80) " mts rmsr, %0 \n"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 81) " nop \n"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 82) : "=r"(tmp)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 83) : "i"(MSR_IE)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 84) : "memory");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 85) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 86)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 87) #endif /* CONFIG_XILINX_MICROBLAZE0_USE_MSR_INSTR */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 88)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 89) static inline notrace unsigned long arch_local_save_flags(void)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 90) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 91) unsigned long flags;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 92) asm volatile(" mfs %0, rmsr \n"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 93) " nop \n"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 94) : "=r"(flags)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 95) :
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 96) : "memory");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 97) return flags;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 98) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 99)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 100) static inline notrace void arch_local_irq_restore(unsigned long flags)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 101) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 102) asm volatile(" mts rmsr, %0 \n"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 103) " nop \n"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 104) :
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 105) : "r"(flags)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 106) : "memory");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 107) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 108)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 109) static inline notrace bool arch_irqs_disabled_flags(unsigned long flags)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 110) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 111) return (flags & MSR_IE) == 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 112) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 113)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 114) static inline notrace bool arch_irqs_disabled(void)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 115) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 116) return arch_irqs_disabled_flags(arch_local_save_flags());
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 117) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 118)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 119) #endif /* _ASM_MICROBLAZE_IRQFLAGS_H */
Orange Pi5 kernel
Deprecated Linux kernel 5.10.110 for OrangePi 5/5B/5+ boards
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