1/* 2 * include/asm-ppc/open_pic.h -- OpenPIC Interrupt Handling 3 * 4 * Copyright (C) 1997 Geert Uytterhoeven 5 * 6 * This file is subject to the terms and conditions of the GNU General Public 7 * License. See the file COPYING in the main directory of this archive 8 * for more details. 9 * 10 */ 11 12#ifndef _PPC_KERNEL_OPEN_PIC_H 13#define _PPC_KERNEL_OPEN_PIC_H 14 15#include <linux/irq.h> 16 17#define OPENPIC_SIZE 0x40000 18 19/* 20 * Non-offset'ed vector numbers 21 */ 22 23#define OPENPIC_VEC_TIMER 110 /* and up */ 24#define OPENPIC_VEC_IPI 118 /* and up */ 25#define OPENPIC_VEC_SPURIOUS 255 26 27/* Priorities */ 28#define OPENPIC_PRIORITY_IPI_BASE 10 29#define OPENPIC_PRIORITY_DEFAULT 4 30#define OPENPIC_PRIORITY_NMI 9 31 32/* OpenPIC IRQ controller structure */ 33extern struct hw_interrupt_type open_pic; 34 35/* OpenPIC IPI controller structure */ 36#ifdef CONFIG_SMP 37extern struct hw_interrupt_type open_pic_ipi; 38#endif /* CONFIG_SMP */ 39 40extern u_int OpenPIC_NumInitSenses; 41extern u_char *OpenPIC_InitSenses; 42extern void __iomem * OpenPIC_Addr; 43extern int epic_serial_mode; 44 45/* Exported functions */ 46extern void openpic_set_sources(int first_irq, int num_irqs, void __iomem *isr); 47extern void openpic_init(int linux_irq_offset); 48extern void openpic_init_nmi_irq(u_int irq); 49extern void openpic_set_irq_priority(u_int irq, u_int pri); 50extern void openpic_hookup_cascade(u_int irq, char *name, 51 int (*cascade_fn)(void)); 52extern u_int openpic_irq(void); 53extern void openpic_eoi(void); 54extern void openpic_request_IPIs(void); 55extern void do_openpic_setup_cpu(void); 56extern int openpic_get_irq(void); 57extern void openpic_reset_processor_phys(u_int cpumask); 58extern void openpic_setup_ISU(int isu_num, unsigned long addr); 59extern void openpic_cause_IPI(u_int ipi, cpumask_t cpumask); 60extern void smp_openpic_message_pass(int target, int msg); 61extern void openpic_set_k2_cascade(int irq); 62extern void openpic_set_priority(u_int pri); 63extern u_int openpic_get_priority(void); 64 65extern inline int openpic_to_irq(int irq) 66{ 67 /* IRQ 0 usually means 'disabled'.. don't mess with it 68 * exceptions to this (sandpoint maybe?) 69 * shouldn't use openpic_to_irq 70 */ 71 if (irq != 0){ 72 return irq += NUM_8259_INTERRUPTS; 73 } else { 74 return 0; 75 } 76} 77/* Support for second openpic on G5 macs */ 78 79 80#define PMAC_OPENPIC2_OFFSET 128 81 82#define OPENPIC2_VEC_TIMER 110 /* and up */ 83#define OPENPIC2_VEC_IPI 118 /* and up */ 84#define OPENPIC2_VEC_SPURIOUS 127 85 86 87extern void* OpenPIC2_Addr; 88 89/* Exported functions */ 90extern void openpic2_set_sources(int first_irq, int num_irqs, void *isr); 91extern void openpic2_init(int linux_irq_offset); 92extern void openpic2_init_nmi_irq(u_int irq); 93extern u_int openpic2_irq(void); 94extern void openpic2_eoi(void); 95extern int openpic2_get_irq(void); 96extern void openpic2_setup_ISU(int isu_num, unsigned long addr); 97#endif /* _PPC_KERNEL_OPEN_PIC_H */ 98