2 #ifndef _ASM_POWERPC_IRQ_H
3 #define _ASM_POWERPC_IRQ_H
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.
12 #include <linux/irqdomain.h>
13 #include <linux/threads.h>
14 #include <linux/list.h>
15 #include <linux/radix-tree.h>
17 #include <asm/types.h>
18 #include <linux/atomic.h>
21 /* Define a way to iterate across irqs. */
22 #define for_each_irq(i) \
23 for ((i) = 0; (i) < NR_IRQS; ++(i))
25 extern atomic_t ppc_n_lost_interrupts;
27 /* This number is used when no interrupt has been assigned */
30 /* Total number of virq in the platform */
31 #define NR_IRQS CONFIG_NR_IRQS
33 /* Same thing, used by the generic IRQ code */
34 #define NR_IRQS_LEGACY NUM_ISA_INTERRUPTS
37 extern irq_hw_number_t irqd_to_hwirq(struct irq_data *d);
38 extern irq_hw_number_t virq_to_hw(unsigned int virq);
41 * irq_early_init - Init irq remapping subsystem
43 extern void irq_early_init(void);
45 static __inline__ int irq_canonicalize(int irq)
50 extern int distribute_irqs;
55 #define __ARCH_HAS_DO_SOFTIRQ
57 #if defined(CONFIG_BOOKE) || defined(CONFIG_40x)
59 * Per-cpu stacks for handling critical, debug and machine check
62 extern struct thread_info *critirq_ctx[NR_CPUS];
63 extern struct thread_info *dbgirq_ctx[NR_CPUS];
64 extern struct thread_info *mcheckirq_ctx[NR_CPUS];
65 extern void exc_lvl_ctx_init(void);
67 #define exc_lvl_ctx_init()
71 * Per-cpu stacks for handling hard and soft interrupts.
73 extern struct thread_info *hardirq_ctx[NR_CPUS];
74 extern struct thread_info *softirq_ctx[NR_CPUS];
76 extern void irq_ctx_init(void);
77 extern void call_do_softirq(struct thread_info *tp);
78 extern int call_handle_irq(int irq, void *p1,
79 struct thread_info *tp, void *func);
80 extern void do_IRQ(struct pt_regs *regs);
82 int irq_choose_cpu(const struct cpumask *mask);
84 #endif /* _ASM_IRQ_H */
85 #endif /* __KERNEL__ */