open_pic.h
上传用户:lgb322
上传日期:2013-02-24
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文件大小:2k
- /*
- * 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 */