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/*
* BK Id: SCCS/s.open_pic.h 1.14 10/11/01 12:09:12 trini
*/
/*
* arch/ppc/kernel/open_pic.h -- OpenPIC Interrupt Handling
*
* Copyright (C) 1997 Geert Uytterhoeven
*
* This file is subject to the terms and conditions of the GNU General Public
* License. See the file COPYING in the main directory of this archive
* for more details.
*
*/
#ifndef _PPC_KERNEL_OPEN_PIC_H
#define _PPC_KERNEL_OPEN_PIC_H
#include <linux/config.h>
#define OPENPIC_SIZE 0x40000
/*
* Non-offset'ed vector numbers
*/
#define OPENPIC_VEC_TIMER 64 /* and up */
#define OPENPIC_VEC_IPI 72 /* and up */
#define OPENPIC_VEC_SPURIOUS 127
/* OpenPIC IRQ controller structure */
extern struct hw_interrupt_type open_pic;
/* OpenPIC IPI controller structure */
#ifdef CONFIG_SMP
extern struct hw_interrupt_type open_pic_ipi;
#endif /* CONFIG_SMP */
extern u_int OpenPIC_NumInitSenses;
extern u_char *OpenPIC_InitSenses;
extern void* OpenPIC_Addr;
/* Exported functions */
extern void openpic_init(int, int, unsigned char *, int);
extern u_int openpic_irq(void);
extern void openpic_eoi(void);
extern void openpic_request_IPIs(void);
extern void do_openpic_setup_cpu(void);
extern int openpic_get_irq(struct pt_regs *regs);
extern void openpic_reset_processor_phys(u_int cpumask);
extern void openpic_setup_ISU(int isu_num, unsigned long addr);
extern void openpic_cause_IPI(u_int ipi, u_int cpumask);
extern void smp_openpic_message_pass(int target, int msg, unsigned long data,
int wait);
extern inline int openpic_to_irq(int irq)
{
/* IRQ 0 usually means 'disabled'.. don't mess with it
* exceptions to this (sandpoint maybe?)
* shouldn't use openpic_to_irq
*/
if (irq != 0){
return irq += NUM_8259_INTERRUPTS;
} else {
return 0;
}
}
/*extern int open_pic_irq_offset;*/
#endif /* _PPC_KERNEL_OPEN_PIC_H */
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