1 #ifdef __KERNEL__ 2 #ifndef _ASM_POWERPC_IRQ_H 3 #define _ASM_POWERPC_IRQ_H 4 5 /* 6 * This program is free software; you can redistribute it and/or 7 * modify it under the terms of the GNU General Public License 8 * as published by the Free Software Foundation; either version 9 * 2 of the License, or (at your option) any later version. 10 */ 11 12 #include <linux/irqdomain.h> 13 #include <linux/threads.h> 14 #include <linux/list.h> 15 #include <linux/radix-tree.h> 16 17 #include <asm/types.h> 18 #include <linux/atomic.h> 19 20 21 extern atomic_t ppc_n_lost_interrupts; 22 23 /* This number is used when no interrupt has been assigned */ 24 #define NO_IRQ (0) 25 26 /* Total number of virq in the platform */ 27 #define NR_IRQS CONFIG_NR_IRQS 28 29 /* Same thing, used by the generic IRQ code */ 30 #define NR_IRQS_LEGACY NUM_ISA_INTERRUPTS 31 32 extern irq_hw_number_t virq_to_hw(unsigned int virq); 33 34 static __inline__ int irq_canonicalize(int irq) 35 { 36 return irq; 37 } 38 39 extern int distribute_irqs; 40 41 struct irqaction; 42 struct pt_regs; 43 44 #define __ARCH_HAS_DO_SOFTIRQ 45 46 #if defined(CONFIG_BOOKE) || defined(CONFIG_40x) 47 /* 48 * Per-cpu stacks for handling critical, debug and machine check 49 * level interrupts. 50 */ 51 extern struct thread_info *critirq_ctx[NR_CPUS]; 52 extern struct thread_info *dbgirq_ctx[NR_CPUS]; 53 extern struct thread_info *mcheckirq_ctx[NR_CPUS]; 54 extern void exc_lvl_ctx_init(void); 55 #else 56 #define exc_lvl_ctx_init() 57 #endif 58 59 /* 60 * Per-cpu stacks for handling hard and soft interrupts. 61 */ 62 extern struct thread_info *hardirq_ctx[NR_CPUS]; 63 extern struct thread_info *softirq_ctx[NR_CPUS]; 64 65 extern void irq_ctx_init(void); 66 extern void call_do_softirq(struct thread_info *tp); 67 extern void call_do_irq(struct pt_regs *regs, struct thread_info *tp); 68 extern void do_IRQ(struct pt_regs *regs); 69 extern void __init init_IRQ(void); 70 extern void __do_irq(struct pt_regs *regs); 71 72 int irq_choose_cpu(const struct cpumask *mask); 73 74 #endif /* _ASM_IRQ_H */ 75 #endif /* __KERNEL__ */ 76