/* * include/asm-ppc/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/irq.h> #define OPENPIC_SIZE 0x40000 /* * Non-offset'ed vector numbers */ #define OPENPIC_VEC_TIMER 110 /* and up */ #define OPENPIC_VEC_IPI 118 /* and up */ #define OPENPIC_VEC_SPURIOUS 255 /* Priorities */ #define OPENPIC_PRIORITY_IPI_BASE 10 #define OPENPIC_PRIORITY_DEFAULT 4 #define OPENPIC_PRIORITY_NMI 9 /* 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 __iomem * OpenPIC_Addr; extern int epic_serial_mode; /* Exported functions */ extern void openpic_set_sources(int first_irq, int num_irqs, void __iomem *isr); extern void openpic_init(int linux_irq_offset); extern void openpic_init_nmi_irq(u_int irq); extern void openpic_set_irq_priority(u_int irq, u_int pri); extern void openpic_hookup_cascade(u_int irq, char *name, int (*cascade_fn)(struct pt_regs *)); 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, cpumask_t cpumask); extern void smp_openpic_message_pass(int target, int msg); extern void openpic_set_k2_cascade(int irq); extern void openpic_set_priority(u_int pri); extern u_int openpic_get_priority(void); 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; } } /* Support for second openpic on G5 macs */ // FIXME: To be replaced by sane cascaded controller management */ #define PMAC_OPENPIC2_OFFSET 128 #define OPENPIC2_VEC_TIMER 110 /* and up */ #define OPENPIC2_VEC_IPI 118 /* and up */ #define OPENPIC2_VEC_SPURIOUS 127 extern void* OpenPIC2_Addr; /* Exported functions */ extern void openpic2_set_sources(int first_irq, int num_irqs, void *isr); extern void openpic2_init(int linux_irq_offset); extern void openpic2_init_nmi_irq(u_int irq); extern u_int openpic2_irq(void); extern void openpic2_eoi(void); extern int openpic2_get_irq(struct pt_regs *regs); extern void openpic2_setup_ISU(int isu_num, unsigned long addr); #endif /* _PPC_KERNEL_OPEN_PIC_H */