2 * include/asm-ppc/open_pic.h -- OpenPIC Interrupt Handling
4 * Copyright (C) 1997 Geert Uytterhoeven
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
12 #ifndef _PPC_KERNEL_OPEN_PIC_H
13 #define _PPC_KERNEL_OPEN_PIC_H
15 #include <linux/config.h>
16 #include <linux/irq.h>
18 #define OPENPIC_SIZE 0x40000
21 * Non-offset'ed vector numbers
24 #define OPENPIC_VEC_TIMER 64 /* and up */
25 #define OPENPIC_VEC_IPI 72 /* and up */
26 #define OPENPIC_VEC_SPURIOUS 127
28 /* OpenPIC IRQ controller structure */
29 extern struct hw_interrupt_type open_pic;
31 /* OpenPIC IPI controller structure */
33 extern struct hw_interrupt_type open_pic_ipi;
34 #endif /* CONFIG_SMP */
36 extern u_int OpenPIC_NumInitSenses;
37 extern u_char *OpenPIC_InitSenses;
38 extern void* OpenPIC_Addr;
40 /* Exported functions */
41 extern void openpic_set_sources(int first_irq, int num_irqs, void *isr);
42 extern void openpic_init(int linux_irq_offset);
43 extern void openpic_init_nmi_irq(u_int irq);
44 extern void openpic_hookup_cascade(u_int irq, char *name,
45 int (*cascade_fn)(struct pt_regs *));
46 extern u_int openpic_irq(void);
47 extern void openpic_eoi(void);
48 extern void openpic_request_IPIs(void);
49 extern void do_openpic_setup_cpu(void);
50 extern int openpic_get_irq(struct pt_regs *regs);
51 extern void openpic_reset_processor_phys(u_int cpumask);
52 extern void openpic_setup_ISU(int isu_num, unsigned long addr);
53 extern void openpic_cause_IPI(u_int ipi, u_int cpumask);
54 extern void smp_openpic_message_pass(int target, int msg, unsigned long data,
57 extern inline int openpic_to_irq(int irq)
59 /* IRQ 0 usually means 'disabled'.. don't mess with it
60 * exceptions to this (sandpoint maybe?)
61 * shouldn't use openpic_to_irq
65 //return irq += NUM_8259_INTERRUPTS;
71 /*extern int open_pic_irq_offset;*/
72 #endif /* _PPC_KERNEL_OPEN_PIC_H */