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gerrit-public.fairphone.software / kernel / msm-4.9 / addad45494cb4f9c03470a4e5155f442791b0d7f / . / include / asm-ppc / open_pic.h
blob: 778d5726212cdbb061751f7ba3d2545be022d361 [file] [log] [blame]
Linus Torvalds1da177e2005-04-16 15:20:36 -0700[diff] [blame]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
Linus Torvalds1da177e2005-04-16 15:20:36 -0700[diff] [blame]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
Benjamin Herrenschmidte4ee69c2005-06-27 14:36:32 -0700[diff] [blame]27/* Priorities */
28#define OPENPIC_PRIORITY_IPI_BASE 10
29#define OPENPIC_PRIORITY_DEFAULT 4
30#define OPENPIC_PRIORITY_NMI 9
31
Linus Torvalds1da177e2005-04-16 15:20:36 -0700[diff] [blame]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);
Benjamin Herrenschmidte4ee69c2005-06-27 14:36:32 -0700[diff] [blame]49extern void openpic_set_irq_priority(u_int irq, u_int pri);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700[diff] [blame]50extern void openpic_hookup_cascade(u_int irq, char *name,
Olaf Hering40a5f7c2006-10-06 23:06:48 +0200[diff] [blame]51 int (*cascade_fn)(void));
Linus Torvalds1da177e2005-04-16 15:20:36 -0700[diff] [blame]52extern u_int openpic_irq(void);
53extern void openpic_eoi(void);
54extern void openpic_request_IPIs(void);
55extern void do_openpic_setup_cpu(void);
Olaf Hering40a5f7c2006-10-06 23:06:48 +0200[diff] [blame]56extern int openpic_get_irq(void);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700[diff] [blame]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);
Paul Mackerras17a63922005-10-20 21:10:09 +1000[diff] [blame]60extern void smp_openpic_message_pass(int target, int msg);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700[diff] [blame]61extern void openpic_set_k2_cascade(int irq);
62extern void openpic_set_priority(u_int pri);
Benjamin Herrenschmidt7a648b92005-04-16 15:24:18 -0700[diff] [blame]63extern u_int openpic_get_priority(void);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700[diff] [blame]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// FIXME: To be replaced by sane cascaded controller management */
80
81#define PMAC_OPENPIC2_OFFSET 128
82
83#define OPENPIC2_VEC_TIMER 110 /* and up */
84#define OPENPIC2_VEC_IPI 118 /* and up */
85#define OPENPIC2_VEC_SPURIOUS 127
86
87
88extern void* OpenPIC2_Addr;
89
90/* Exported functions */
91extern void openpic2_set_sources(int first_irq, int num_irqs, void *isr);
92extern void openpic2_init(int linux_irq_offset);
93extern void openpic2_init_nmi_irq(u_int irq);
94extern u_int openpic2_irq(void);
95extern void openpic2_eoi(void);
Olaf Hering40a5f7c2006-10-06 23:06:48 +0200[diff] [blame]96extern int openpic2_get_irq(void);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700[diff] [blame]97extern void openpic2_setup_ISU(int isu_num, unsigned long addr);
98#endif /* _PPC_KERNEL_OPEN_PIC_H */