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 /* Define a way to iterate across irqs. */ 22 #define for_each_irq(i) \ 23 for ((i) = 0; (i) < NR_IRQS; ++(i)) 24 25 extern atomic_t ppc_n_lost_interrupts; 26 27 /* This number is used when no interrupt has been assigned */ 28 #define NO_IRQ (0) 29 30 /* Total number of virq in the platform */ 31 #define NR_IRQS CONFIG_NR_IRQS 32 33 /* Same thing, used by the generic IRQ code */ 34 #define NR_IRQS_LEGACY NUM_ISA_INTERRUPTS 35 36 extern irq_hw_number_t virq_to_hw(unsigned int virq); 37 38 /** 39 * irq_early_init - Init irq remapping subsystem 40 */ 41 extern void irq_early_init(void); 42 43 static __inline__ int irq_canonicalize(int irq) 44 { 45 return irq; 46 } 47 48 extern int distribute_irqs; 49 50 struct irqaction; 51 struct pt_regs; 52 53 #define __ARCH_HAS_DO_SOFTIRQ 54 55 #if defined(CONFIG_BOOKE) || defined(CONFIG_40x) 56 /* 57 * Per-cpu stacks for handling critical, debug and machine check 58 * level interrupts. 59 */ 60 extern struct thread_info *critirq_ctx[NR_CPUS]; 61 extern struct thread_info *dbgirq_ctx[NR_CPUS]; 62 extern struct thread_info *mcheckirq_ctx[NR_CPUS]; 63 extern void exc_lvl_ctx_init(void); 64 #else 65 #define exc_lvl_ctx_init() 66 #endif 67 68 /* 69 * Per-cpu stacks for handling hard and soft interrupts. 70 */ 71 extern struct thread_info *hardirq_ctx[NR_CPUS]; 72 extern struct thread_info *softirq_ctx[NR_CPUS]; 73 74 extern void irq_ctx_init(void); 75 extern void call_do_softirq(struct thread_info *tp); 76 extern int call_handle_irq(int irq, void *p1, 77 struct thread_info *tp, void *func); 78 extern void do_IRQ(struct pt_regs *regs); 79 80 int irq_choose_cpu(const struct cpumask *mask); 81 82 #endif /* _ASM_IRQ_H */ 83 #endif /* __KERNEL__ */ 84