diff options
Diffstat (limited to 'arch/frv/include/asm/irqflags.h')
| -rw-r--r-- | arch/frv/include/asm/irqflags.h | 158 |
1 files changed, 0 insertions, 158 deletions
diff --git a/arch/frv/include/asm/irqflags.h b/arch/frv/include/asm/irqflags.h deleted file mode 100644 index 82f0b5363f42..000000000000 --- a/arch/frv/include/asm/irqflags.h +++ /dev/null @@ -1,158 +0,0 @@ -/* FR-V interrupt handling - * - * Copyright (C) 2010 Red Hat, Inc. All Rights Reserved. - * Written by David Howells (dhowells@redhat.com) - * - * This program is free software; you can redistribute it and/or - * modify it under the terms of the GNU General Public Licence - * as published by the Free Software Foundation; either version - * 2 of the Licence, or (at your option) any later version. - */ - -#ifndef _ASM_IRQFLAGS_H -#define _ASM_IRQFLAGS_H - -/* - * interrupt flag manipulation - * - use virtual interrupt management since touching the PSR is slow - * - ICC2.Z: T if interrupts virtually disabled - * - ICC2.C: F if interrupts really disabled - * - if Z==1 upon interrupt: - * - C is set to 0 - * - interrupts are really disabled - * - entry.S returns immediately - * - uses TIHI (TRAP if Z==0 && C==0) #2 to really reenable interrupts - * - if taken, the trap: - * - sets ICC2.C - * - enables interrupts - */ -static inline void arch_local_irq_disable(void) -{ - /* set Z flag, but don't change the C flag */ - asm volatile(" andcc gr0,gr0,gr0,icc2 \n" - : - : - : "memory", "icc2" - ); -} - -static inline void arch_local_irq_enable(void) -{ - /* clear Z flag and then test the C flag */ - asm volatile(" oricc gr0,#1,gr0,icc2 \n" - " tihi icc2,gr0,#2 \n" - : - : - : "memory", "icc2" - ); -} - -static inline unsigned long arch_local_save_flags(void) -{ - unsigned long flags; - - asm volatile("movsg ccr,%0" - : "=r"(flags) - : - : "memory"); - - /* shift ICC2.Z to bit 0 */ - flags >>= 26; - - /* make flags 1 if interrupts disabled, 0 otherwise */ - return flags & 1UL; - -} - -static inline unsigned long arch_local_irq_save(void) -{ - unsigned long flags = arch_local_save_flags(); - arch_local_irq_disable(); - return flags; -} - -static inline void arch_local_irq_restore(unsigned long flags) -{ - /* load the Z flag by turning 1 if disabled into 0 if disabled - * and thus setting the Z flag but not the C flag */ - asm volatile(" xoricc %0,#1,gr0,icc2 \n" - /* then trap if Z=0 and C=0 */ - " tihi icc2,gr0,#2 \n" - : - : "r"(flags) - : "memory", "icc2" - ); - -} - -static inline bool arch_irqs_disabled_flags(unsigned long flags) -{ - return flags; -} - -static inline bool arch_irqs_disabled(void) -{ - return arch_irqs_disabled_flags(arch_local_save_flags()); -} - -/* - * real interrupt flag manipulation - */ -#define __arch_local_irq_disable() \ -do { \ - unsigned long psr; \ - asm volatile(" movsg psr,%0 \n" \ - " andi %0,%2,%0 \n" \ - " ori %0,%1,%0 \n" \ - " movgs %0,psr \n" \ - : "=r"(psr) \ - : "i" (PSR_PIL_14), "i" (~PSR_PIL) \ - : "memory"); \ -} while (0) - -#define __arch_local_irq_enable() \ -do { \ - unsigned long psr; \ - asm volatile(" movsg psr,%0 \n" \ - " andi %0,%1,%0 \n" \ - " movgs %0,psr \n" \ - : "=r"(psr) \ - : "i" (~PSR_PIL) \ - : "memory"); \ -} while (0) - -#define __arch_local_save_flags(flags) \ -do { \ - typecheck(unsigned long, flags); \ - asm("movsg psr,%0" \ - : "=r"(flags) \ - : \ - : "memory"); \ -} while (0) - -#define __arch_local_irq_save(flags) \ -do { \ - unsigned long npsr; \ - typecheck(unsigned long, flags); \ - asm volatile(" movsg psr,%0 \n" \ - " andi %0,%3,%1 \n" \ - " ori %1,%2,%1 \n" \ - " movgs %1,psr \n" \ - : "=r"(flags), "=r"(npsr) \ - : "i" (PSR_PIL_14), "i" (~PSR_PIL) \ - : "memory"); \ -} while (0) - -#define __arch_local_irq_restore(flags) \ -do { \ - typecheck(unsigned long, flags); \ - asm volatile(" movgs %0,psr \n" \ - : \ - : "r" (flags) \ - : "memory"); \ -} while (0) - -#define __arch_irqs_disabled() \ - ((__get_PSR() & PSR_PIL) >= PSR_PIL_14) - -#endif /* _ASM_IRQFLAGS_H */ |