diff options
Diffstat (limited to 'arch/mn10300/include/asm/irqflags.h')
| -rw-r--r-- | arch/mn10300/include/asm/irqflags.h | 215 |
1 files changed, 0 insertions, 215 deletions
diff --git a/arch/mn10300/include/asm/irqflags.h b/arch/mn10300/include/asm/irqflags.h deleted file mode 100644 index 8730c0a3c37d..000000000000 --- a/arch/mn10300/include/asm/irqflags.h +++ /dev/null @@ -1,215 +0,0 @@ -/* MN10300 IRQ flag 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 - -#include <asm/cpu-regs.h> -/* linux/smp.h <- linux/irqflags.h needs asm/smp.h first */ -#include <asm/smp.h> - -/* - * interrupt control - * - "disabled": run in IM1/2 - * - level 0 - kernel debugger - * - level 1 - virtual serial DMA (if present) - * - level 5 - normal interrupt priority - * - level 6 - timer interrupt - * - "enabled": run in IM7 - */ -#define MN10300_CLI_LEVEL (CONFIG_LINUX_CLI_LEVEL << EPSW_IM_SHIFT) - -#ifndef __ASSEMBLY__ - -static inline unsigned long arch_local_save_flags(void) -{ - unsigned long flags; - - asm volatile("mov epsw,%0" : "=d"(flags)); - return flags; -} - -static inline void arch_local_irq_disable(void) -{ - asm volatile( - " and %0,epsw \n" - " or %1,epsw \n" - " nop \n" - " nop \n" - " nop \n" - : - : "i"(~EPSW_IM), "i"(EPSW_IE | MN10300_CLI_LEVEL) - : "memory"); -} - -static inline unsigned long arch_local_irq_save(void) -{ - unsigned long flags; - - flags = arch_local_save_flags(); - arch_local_irq_disable(); - return flags; -} - -/* - * we make sure arch_irq_enable() doesn't cause priority inversion - */ -extern unsigned long __mn10300_irq_enabled_epsw[]; - -static inline void arch_local_irq_enable(void) -{ - unsigned long tmp; - int cpu = raw_smp_processor_id(); - - asm volatile( - " mov epsw,%0 \n" - " and %1,%0 \n" - " or %2,%0 \n" - " mov %0,epsw \n" - : "=&d"(tmp) - : "i"(~EPSW_IM), "r"(__mn10300_irq_enabled_epsw[cpu]) - : "memory", "cc"); -} - -static inline void arch_local_irq_restore(unsigned long flags) -{ - asm volatile( - " mov %0,epsw \n" - " nop \n" - " nop \n" - " nop \n" - : - : "d"(flags) - : "memory", "cc"); -} - -static inline bool arch_irqs_disabled_flags(unsigned long flags) -{ - return (flags & (EPSW_IE | EPSW_IM)) != (EPSW_IE | EPSW_IM_7); -} - -static inline bool arch_irqs_disabled(void) -{ - return arch_irqs_disabled_flags(arch_local_save_flags()); -} - -/* - * Hook to save power by halting the CPU - * - called from the idle loop - * - must reenable interrupts (which takes three instruction cycles to complete) - */ -static inline void arch_safe_halt(void) -{ -#ifdef CONFIG_SMP - arch_local_irq_enable(); -#else - asm volatile( - " or %0,epsw \n" - " nop \n" - " nop \n" - " bset %2,(%1) \n" - : - : "i"(EPSW_IE|EPSW_IM), "n"(&CPUM), "i"(CPUM_SLEEP) - : "cc"); -#endif -} - -#define __sleep_cpu() \ -do { \ - asm volatile( \ - " bset %1,(%0)\n" \ - "1: btst %1,(%0)\n" \ - " bne 1b\n" \ - : \ - : "i"(&CPUM), "i"(CPUM_SLEEP) \ - : "cc" \ - ); \ -} while (0) - -static inline void arch_local_cli(void) -{ - asm volatile( - " and %0,epsw \n" - " nop \n" - " nop \n" - " nop \n" - : - : "i"(~EPSW_IE) - : "memory" - ); -} - -static inline unsigned long arch_local_cli_save(void) -{ - unsigned long flags = arch_local_save_flags(); - arch_local_cli(); - return flags; -} - -static inline void arch_local_sti(void) -{ - asm volatile( - " or %0,epsw \n" - : - : "i"(EPSW_IE) - : "memory"); -} - -static inline void arch_local_change_intr_mask_level(unsigned long level) -{ - asm volatile( - " and %0,epsw \n" - " or %1,epsw \n" - : - : "i"(~EPSW_IM), "i"(EPSW_IE | level) - : "cc", "memory"); -} - -#else /* !__ASSEMBLY__ */ - -#define LOCAL_SAVE_FLAGS(reg) \ - mov epsw,reg - -#define LOCAL_IRQ_DISABLE \ - and ~EPSW_IM,epsw; \ - or EPSW_IE|MN10300_CLI_LEVEL,epsw; \ - nop; \ - nop; \ - nop - -#define LOCAL_IRQ_ENABLE \ - or EPSW_IE|EPSW_IM_7,epsw - -#define LOCAL_IRQ_RESTORE(reg) \ - mov reg,epsw - -#define LOCAL_CLI_SAVE(reg) \ - mov epsw,reg; \ - and ~EPSW_IE,epsw; \ - nop; \ - nop; \ - nop - -#define LOCAL_CLI \ - and ~EPSW_IE,epsw; \ - nop; \ - nop; \ - nop - -#define LOCAL_STI \ - or EPSW_IE,epsw - -#define LOCAL_CHANGE_INTR_MASK_LEVEL(level) \ - and ~EPSW_IM,epsw; \ - or EPSW_IE|(level),epsw - -#endif /* __ASSEMBLY__ */ -#endif /* _ASM_IRQFLAGS_H */ |