Linux kernel mirror (for testing)
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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/config.h>
16#include <linux/irq.h>
17
18#define OPENPIC_SIZE 0x40000
19
20/*
21 * Non-offset'ed vector numbers
22 */
23
24#define OPENPIC_VEC_TIMER 110 /* and up */
25#define OPENPIC_VEC_IPI 118 /* and up */
26#define OPENPIC_VEC_SPURIOUS 255
27
28/* OpenPIC IRQ controller structure */
29extern struct hw_interrupt_type open_pic;
30
31/* OpenPIC IPI controller structure */
32#ifdef CONFIG_SMP
33extern struct hw_interrupt_type open_pic_ipi;
34#endif /* CONFIG_SMP */
35
36extern u_int OpenPIC_NumInitSenses;
37extern u_char *OpenPIC_InitSenses;
38extern void __iomem * OpenPIC_Addr;
39extern int epic_serial_mode;
40
41/* Exported functions */
42extern void openpic_set_sources(int first_irq, int num_irqs, void __iomem *isr);
43extern void openpic_init(int linux_irq_offset);
44extern void openpic_init_nmi_irq(u_int irq);
45extern void openpic_hookup_cascade(u_int irq, char *name,
46 int (*cascade_fn)(struct pt_regs *));
47extern u_int openpic_irq(void);
48extern void openpic_eoi(void);
49extern void openpic_request_IPIs(void);
50extern void do_openpic_setup_cpu(void);
51extern int openpic_get_irq(struct pt_regs *regs);
52extern void openpic_reset_processor_phys(u_int cpumask);
53extern void openpic_setup_ISU(int isu_num, unsigned long addr);
54extern void openpic_cause_IPI(u_int ipi, cpumask_t cpumask);
55extern void smp_openpic_message_pass(int target, int msg, unsigned long data,
56 int wait);
57extern void openpic_set_k2_cascade(int irq);
58extern void openpic_set_priority(u_int pri);
59extern u_int openpic_get_priority(void);
60
61extern inline int openpic_to_irq(int irq)
62{
63 /* IRQ 0 usually means 'disabled'.. don't mess with it
64 * exceptions to this (sandpoint maybe?)
65 * shouldn't use openpic_to_irq
66 */
67 if (irq != 0){
68 return irq += NUM_8259_INTERRUPTS;
69 } else {
70 return 0;
71 }
72}
73/* Support for second openpic on G5 macs */
74
75// FIXME: To be replaced by sane cascaded controller management */
76
77#define PMAC_OPENPIC2_OFFSET 128
78
79#define OPENPIC2_VEC_TIMER 110 /* and up */
80#define OPENPIC2_VEC_IPI 118 /* and up */
81#define OPENPIC2_VEC_SPURIOUS 127
82
83
84extern void* OpenPIC2_Addr;
85
86/* Exported functions */
87extern void openpic2_set_sources(int first_irq, int num_irqs, void *isr);
88extern void openpic2_init(int linux_irq_offset);
89extern void openpic2_init_nmi_irq(u_int irq);
90extern u_int openpic2_irq(void);
91extern void openpic2_eoi(void);
92extern int openpic2_get_irq(struct pt_regs *regs);
93extern void openpic2_setup_ISU(int isu_num, unsigned long addr);
94#endif /* _PPC_KERNEL_OPEN_PIC_H */