tjh.dev
Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
kernel
os
linux
1/*
2 * include/linux/irqchip/arm-gic.h
3 *
4 * Copyright (C) 2002 ARM Limited, All Rights Reserved.
5 *
6 * This program is free software; you can redistribute it and/or modify
7 * it under the terms of the GNU General Public License version 2 as
8 * published by the Free Software Foundation.
9 */
10#ifndef __LINUX_IRQCHIP_ARM_GIC_H
11#define __LINUX_IRQCHIP_ARM_GIC_H
12
13#define GIC_CPU_CTRL 0x00
14#define GIC_CPU_PRIMASK 0x04
15#define GIC_CPU_BINPOINT 0x08
16#define GIC_CPU_INTACK 0x0c
17#define GIC_CPU_EOI 0x10
18#define GIC_CPU_RUNNINGPRI 0x14
19#define GIC_CPU_HIGHPRI 0x18
20#define GIC_CPU_ALIAS_BINPOINT 0x1c
21#define GIC_CPU_ACTIVEPRIO 0xd0
22#define GIC_CPU_IDENT 0xfc
23#define GIC_CPU_DEACTIVATE 0x1000
24
25#define GICC_ENABLE 0x1
26#define GICC_INT_PRI_THRESHOLD 0xf0
27
28#define GIC_CPU_CTRL_EOImodeNS (1 << 9)
29
30#define GICC_IAR_INT_ID_MASK 0x3ff
31#define GICC_INT_SPURIOUS 1023
32#define GICC_DIS_BYPASS_MASK 0x1e0
33
34#define GIC_DIST_CTRL 0x000
35#define GIC_DIST_CTR 0x004
36#define GIC_DIST_IIDR 0x008
37#define GIC_DIST_IGROUP 0x080
38#define GIC_DIST_ENABLE_SET 0x100
39#define GIC_DIST_ENABLE_CLEAR 0x180
40#define GIC_DIST_PENDING_SET 0x200
41#define GIC_DIST_PENDING_CLEAR 0x280
42#define GIC_DIST_ACTIVE_SET 0x300
43#define GIC_DIST_ACTIVE_CLEAR 0x380
44#define GIC_DIST_PRI 0x400
45#define GIC_DIST_TARGET 0x800
46#define GIC_DIST_CONFIG 0xc00
47#define GIC_DIST_SOFTINT 0xf00
48#define GIC_DIST_SGI_PENDING_CLEAR 0xf10
49#define GIC_DIST_SGI_PENDING_SET 0xf20
50
51#define GICD_ENABLE 0x1
52#define GICD_DISABLE 0x0
53#define GICD_INT_ACTLOW_LVLTRIG 0x0
54#define GICD_INT_EN_CLR_X32 0xffffffff
55#define GICD_INT_EN_SET_SGI 0x0000ffff
56#define GICD_INT_EN_CLR_PPI 0xffff0000
57#define GICD_INT_DEF_PRI 0xa0
58#define GICD_INT_DEF_PRI_X4 ((GICD_INT_DEF_PRI << 24) |\
59 (GICD_INT_DEF_PRI << 16) |\
60 (GICD_INT_DEF_PRI << 8) |\
61 GICD_INT_DEF_PRI)
62
63#define GICH_HCR 0x0
64#define GICH_VTR 0x4
65#define GICH_VMCR 0x8
66#define GICH_MISR 0x10
67#define GICH_EISR0 0x20
68#define GICH_EISR1 0x24
69#define GICH_ELRSR0 0x30
70#define GICH_ELRSR1 0x34
71#define GICH_APR 0xf0
72#define GICH_LR0 0x100
73
74#define GICH_HCR_EN (1 << 0)
75#define GICH_HCR_UIE (1 << 1)
76
77#define GICH_LR_VIRTUALID (0x3ff << 0)
78#define GICH_LR_PHYSID_CPUID_SHIFT (10)
79#define GICH_LR_PHYSID_CPUID (0x3ff << GICH_LR_PHYSID_CPUID_SHIFT)
80#define GICH_LR_PRIORITY_SHIFT 23
81#define GICH_LR_STATE (3 << 28)
82#define GICH_LR_PENDING_BIT (1 << 28)
83#define GICH_LR_ACTIVE_BIT (1 << 29)
84#define GICH_LR_EOI (1 << 19)
85#define GICH_LR_HW (1 << 31)
86
87#define GICH_VMCR_CTRL_SHIFT 0
88#define GICH_VMCR_CTRL_MASK (0x21f << GICH_VMCR_CTRL_SHIFT)
89#define GICH_VMCR_PRIMASK_SHIFT 27
90#define GICH_VMCR_PRIMASK_MASK (0x1f << GICH_VMCR_PRIMASK_SHIFT)
91#define GICH_VMCR_BINPOINT_SHIFT 21
92#define GICH_VMCR_BINPOINT_MASK (0x7 << GICH_VMCR_BINPOINT_SHIFT)
93#define GICH_VMCR_ALIAS_BINPOINT_SHIFT 18
94#define GICH_VMCR_ALIAS_BINPOINT_MASK (0x7 << GICH_VMCR_ALIAS_BINPOINT_SHIFT)
95
96#define GICH_MISR_EOI (1 << 0)
97#define GICH_MISR_U (1 << 1)
98
99#ifndef __ASSEMBLY__
100
101#include <linux/irqdomain.h>
102
103struct device_node;
104struct gic_chip_data;
105
106void gic_cascade_irq(unsigned int gic_nr, unsigned int irq);
107int gic_cpu_if_down(unsigned int gic_nr);
108void gic_cpu_save(struct gic_chip_data *gic);
109void gic_cpu_restore(struct gic_chip_data *gic);
110void gic_dist_save(struct gic_chip_data *gic);
111void gic_dist_restore(struct gic_chip_data *gic);
112
113/*
114 * Subdrivers that need some preparatory work can initialize their
115 * chips and call this to register their GICs.
116 */
117int gic_of_init(struct device_node *node, struct device_node *parent);
118
119/*
120 * Initialises and registers a non-root or child GIC chip. Memory for
121 * the gic_chip_data structure is dynamically allocated.
122 */
123int gic_of_init_child(struct device *dev, struct gic_chip_data **gic, int irq);
124
125/*
126 * Legacy platforms not converted to DT yet must use this to init
127 * their GIC
128 */
129void gic_init(unsigned int nr, int start,
130 void __iomem *dist , void __iomem *cpu);
131
132int gicv2m_init(struct fwnode_handle *parent_handle,
133 struct irq_domain *parent);
134
135void gic_send_sgi(unsigned int cpu_id, unsigned int irq);
136int gic_get_cpu_id(unsigned int cpu);
137void gic_migrate_target(unsigned int new_cpu_id);
138unsigned long gic_get_sgir_physaddr(void);
139
140#endif /* __ASSEMBLY */
141#endif