| /* |
| * Copyright (C) 1999 Cort Dougan <cort@cs.nmt.edu> |
| */ |
| #ifndef _ASM_POWERPC_HW_IRQ_H |
| #define _ASM_POWERPC_HW_IRQ_H |
| |
| #ifdef __KERNEL__ |
| |
| #include <linux/errno.h> |
| #include <linux/compiler.h> |
| #include <asm/ptrace.h> |
| #include <asm/processor.h> |
| |
| extern void timer_interrupt(struct pt_regs *); |
| |
| #ifdef CONFIG_PPC64 |
| #include <asm/paca.h> |
| |
| static inline unsigned long local_get_flags(void) |
| { |
| return get_paca()->soft_enabled; |
| } |
| |
| static inline unsigned long local_irq_disable(void) |
| { |
| unsigned long flag = get_paca()->soft_enabled; |
| get_paca()->soft_enabled = 0; |
| barrier(); |
| return flag; |
| } |
| |
| extern void local_irq_restore(unsigned long); |
| extern void iseries_handle_interrupts(void); |
| |
| #define local_irq_enable() local_irq_restore(1) |
| #define local_save_flags(flags) ((flags) = local_get_flags()) |
| #define local_irq_save(flags) ((flags) = local_irq_disable()) |
| |
| #define irqs_disabled() (local_get_flags() == 0) |
| |
| #define hard_irq_enable() __mtmsrd(mfmsr() | MSR_EE, 1) |
| #define hard_irq_disable() __mtmsrd(mfmsr() & ~MSR_EE, 1) |
| |
| #else |
| |
| #if defined(CONFIG_BOOKE) |
| #define SET_MSR_EE(x) mtmsr(x) |
| #define local_irq_restore(flags) __asm__ __volatile__("wrtee %0" : : "r" (flags) : "memory") |
| #else |
| #define SET_MSR_EE(x) mtmsr(x) |
| #define local_irq_restore(flags) mtmsr(flags) |
| #endif |
| |
| static inline void local_irq_disable(void) |
| { |
| #ifdef CONFIG_BOOKE |
| __asm__ __volatile__("wrteei 0": : :"memory"); |
| #else |
| unsigned long msr; |
| __asm__ __volatile__("": : :"memory"); |
| msr = mfmsr(); |
| SET_MSR_EE(msr & ~MSR_EE); |
| #endif |
| } |
| |
| static inline void local_irq_enable(void) |
| { |
| #ifdef CONFIG_BOOKE |
| __asm__ __volatile__("wrteei 1": : :"memory"); |
| #else |
| unsigned long msr; |
| __asm__ __volatile__("": : :"memory"); |
| msr = mfmsr(); |
| SET_MSR_EE(msr | MSR_EE); |
| #endif |
| } |
| |
| static inline void local_irq_save_ptr(unsigned long *flags) |
| { |
| unsigned long msr; |
| msr = mfmsr(); |
| *flags = msr; |
| #ifdef CONFIG_BOOKE |
| __asm__ __volatile__("wrteei 0": : :"memory"); |
| #else |
| SET_MSR_EE(msr & ~MSR_EE); |
| #endif |
| __asm__ __volatile__("": : :"memory"); |
| } |
| |
| #define local_save_flags(flags) ((flags) = mfmsr()) |
| #define local_irq_save(flags) local_irq_save_ptr(&flags) |
| #define irqs_disabled() ((mfmsr() & MSR_EE) == 0) |
| |
| #endif /* CONFIG_PPC64 */ |
| |
| #define mask_irq(irq) \ |
| ({ \ |
| irq_desc_t *desc = get_irq_desc(irq); \ |
| if (desc->chip && desc->chip->disable) \ |
| desc->chip->disable(irq); \ |
| }) |
| #define unmask_irq(irq) \ |
| ({ \ |
| irq_desc_t *desc = get_irq_desc(irq); \ |
| if (desc->chip && desc->chip->enable) \ |
| desc->chip->enable(irq); \ |
| }) |
| #define ack_irq(irq) \ |
| ({ \ |
| irq_desc_t *desc = get_irq_desc(irq); \ |
| if (desc->chip && desc->chip->ack) \ |
| desc->chip->ack(irq); \ |
| }) |
| |
| /* |
| * interrupt-retrigger: should we handle this via lost interrupts and IPIs |
| * or should we not care like we do now ? --BenH. |
| */ |
| struct hw_interrupt_type; |
| |
| #endif /* __KERNEL__ */ |
| #endif /* _ASM_POWERPC_HW_IRQ_H */ |