^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) * IRQ flags defines.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5) * Copyright (C) 1998-2003 Hewlett-Packard Co
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6) * David Mosberger-Tang <davidm@hpl.hp.com>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 7) * Copyright (C) 1999 Asit Mallick <asit.k.mallick@intel.com>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 8) * Copyright (C) 1999 Don Dugger <don.dugger@intel.com>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 9) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 10)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 11) #ifndef _ASM_IA64_IRQFLAGS_H
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 12) #define _ASM_IA64_IRQFLAGS_H
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 13)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 14) #include <asm/pal.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 15) #include <asm/kregs.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 16)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 17) #ifdef CONFIG_IA64_DEBUG_IRQ
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 18) extern unsigned long last_cli_ip;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 19) static inline void arch_maybe_save_ip(unsigned long flags)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 20) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 21) if (flags & IA64_PSR_I)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 22) last_cli_ip = ia64_getreg(_IA64_REG_IP);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 23) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 24) #else
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 25) #define arch_maybe_save_ip(flags) do {} while (0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 26) #endif
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 27)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 28) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 29) * - clearing psr.i is implicitly serialized (visible by next insn)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 30) * - setting psr.i requires data serialization
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 31) * - we need a stop-bit before reading PSR because we sometimes
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 32) * write a floating-point register right before reading the PSR
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 33) * and that writes to PSR.mfl
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 34) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 35)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 36) static inline unsigned long arch_local_save_flags(void)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 37) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 38) ia64_stop();
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 39) return ia64_getreg(_IA64_REG_PSR);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 40) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 41)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 42) static inline unsigned long arch_local_irq_save(void)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 43) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 44) unsigned long flags = arch_local_save_flags();
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 45)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 46) ia64_stop();
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 47) ia64_rsm(IA64_PSR_I);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 48) arch_maybe_save_ip(flags);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 49) return flags;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 50) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 51)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 52) static inline void arch_local_irq_disable(void)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 53) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 54) #ifdef CONFIG_IA64_DEBUG_IRQ
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 55) arch_local_irq_save();
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 56) #else
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 57) ia64_stop();
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 58) ia64_rsm(IA64_PSR_I);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 59) #endif
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 60) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 61)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 62) static inline void arch_local_irq_enable(void)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 63) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 64) ia64_stop();
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 65) ia64_ssm(IA64_PSR_I);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 66) ia64_srlz_d();
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 67) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 68)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 69) static inline void arch_local_irq_restore(unsigned long flags)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 70) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 71) #ifdef CONFIG_IA64_DEBUG_IRQ
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 72) unsigned long old_psr = arch_local_save_flags();
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 73) #endif
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 74) ia64_intrin_local_irq_restore(flags & IA64_PSR_I);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 75) arch_maybe_save_ip(old_psr & ~flags);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 76) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 77)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 78) static inline bool arch_irqs_disabled_flags(unsigned long flags)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 79) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 80) return (flags & IA64_PSR_I) == 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 81) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 82)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 83) static inline bool arch_irqs_disabled(void)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 84) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 85) return arch_irqs_disabled_flags(arch_local_save_flags());
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 86) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 87)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 88) static inline void arch_safe_halt(void)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 89) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 90) arch_local_irq_enable();
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 91) ia64_pal_halt_light(); /* PAL_HALT_LIGHT */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 92) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 93)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 94)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 95) #endif /* _ASM_IA64_IRQFLAGS_H */
Orange Pi5 kernel
Deprecated Linux kernel 5.10.110 for OrangePi 5/5B/5+ boards
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