summaryrefslogtreecommitdiffstats
path: root/include/linux/irqchip/arm-gic.h
blob: dc30f3d057eb0801e9ae8d22fc3ce11943d188d1 (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
/*
 *  include/linux/irqchip/arm-gic.h
 *
 *  Copyright (C) 2002 ARM Limited, All Rights Reserved.
 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License version 2 as
 * published by the Free Software Foundation.
 */
#ifndef __LINUX_IRQCHIP_ARM_GIC_H
#define __LINUX_IRQCHIP_ARM_GIC_H

#define GIC_CPU_CTRL			0x00
#define GIC_CPU_PRIMASK			0x04
#define GIC_CPU_BINPOINT		0x08
#define GIC_CPU_INTACK			0x0c
#define GIC_CPU_EOI			0x10
#define GIC_CPU_RUNNINGPRI		0x14
#define GIC_CPU_HIGHPRI			0x18
#define GIC_CPU_ALIAS_BINPOINT		0x1c
#define GIC_CPU_ACTIVEPRIO		0xd0
#define GIC_CPU_IDENT			0xfc
#define GIC_CPU_DEACTIVATE		0x1000

#define GICC_ENABLE			0x1
#define GICC_INT_PRI_THRESHOLD		0xf0

#define GIC_CPU_CTRL_EOImodeNS		(1 << 9)

#define GICC_IAR_INT_ID_MASK		0x3ff
#define GICC_INT_SPURIOUS		1023
#define GICC_DIS_BYPASS_MASK		0x1e0

#define GIC_DIST_CTRL			0x000
#define GIC_DIST_CTR			0x004
#define GIC_DIST_IIDR			0x008
#define GIC_DIST_IGROUP			0x080
#define GIC_DIST_ENABLE_SET		0x100
#define GIC_DIST_ENABLE_CLEAR		0x180
#define GIC_DIST_PENDING_SET		0x200
#define GIC_DIST_PENDING_CLEAR		0x280
#define GIC_DIST_ACTIVE_SET		0x300
#define GIC_DIST_ACTIVE_CLEAR		0x380
#define GIC_DIST_PRI			0x400
#define GIC_DIST_TARGET			0x800
#define GIC_DIST_CONFIG			0xc00
#define GIC_DIST_SOFTINT		0xf00
#define GIC_DIST_SGI_PENDING_CLEAR	0xf10
#define GIC_DIST_SGI_PENDING_SET	0xf20

#define GICD_ENABLE			0x1
#define GICD_DISABLE			0x0
#define GICD_INT_ACTLOW_LVLTRIG		0x0
#define GICD_INT_EN_CLR_X32		0xffffffff
#define GICD_INT_EN_SET_SGI		0x0000ffff
#define GICD_INT_EN_CLR_PPI		0xffff0000
#define GICD_INT_DEF_PRI		0xa0
#define GICD_INT_DEF_PRI_X4		((GICD_INT_DEF_PRI << 24) |\
					(GICD_INT_DEF_PRI << 16) |\
					(GICD_INT_DEF_PRI << 8) |\
					GICD_INT_DEF_PRI)

#define GICH_HCR			0x0
#define GICH_VTR			0x4
#define GICH_VMCR			0x8
#define GICH_MISR			0x10
#define GICH_EISR0 			0x20
#define GICH_EISR1 			0x24
#define GICH_ELRSR0 			0x30
#define GICH_ELRSR1 			0x34
#define GICH_APR			0xf0
#define GICH_LR0			0x100

#define GICH_HCR_EN			(1 << 0)
#define GICH_HCR_UIE			(1 << 1)

#define GICH_LR_VIRTUALID		(0x3ff << 0)
#define GICH_LR_PHYSID_CPUID_SHIFT	(10)
#define GICH_LR_PHYSID_CPUID		(0x3ff << GICH_LR_PHYSID_CPUID_SHIFT)
#define GICH_LR_PRIORITY_SHIFT		23
#define GICH_LR_STATE			(3 << 28)
#define GICH_LR_PENDING_BIT		(1 << 28)
#define GICH_LR_ACTIVE_BIT		(1 << 29)
#define GICH_LR_EOI			(1 << 19)
#define GICH_LR_HW			(1 << 31)

#define GICH_VMCR_CTRL_SHIFT		0
#define GICH_VMCR_CTRL_MASK		(0x21f << GICH_VMCR_CTRL_SHIFT)
#define GICH_VMCR_PRIMASK_SHIFT		27
#define GICH_VMCR_PRIMASK_MASK		(0x1f << GICH_VMCR_PRIMASK_SHIFT)
#define GICH_VMCR_BINPOINT_SHIFT	21
#define GICH_VMCR_BINPOINT_MASK		(0x7 << GICH_VMCR_BINPOINT_SHIFT)
#define GICH_VMCR_ALIAS_BINPOINT_SHIFT	18
#define GICH_VMCR_ALIAS_BINPOINT_MASK	(0x7 << GICH_VMCR_ALIAS_BINPOINT_SHIFT)

#define GICH_MISR_EOI			(1 << 0)
#define GICH_MISR_U			(1 << 1)

#define GICV_PMR_PRIORITY_SHIFT		3
#define GICV_PMR_PRIORITY_MASK		(0x1f << GICV_PMR_PRIORITY_SHIFT)

#ifndef __ASSEMBLY__

#include <linux/irqdomain.h>

struct device_node;
struct gic_chip_data;

void gic_cascade_irq(unsigned int gic_nr, unsigned int irq);
int gic_cpu_if_down(unsigned int gic_nr);
void gic_cpu_save(struct gic_chip_data *gic);
void gic_cpu_restore(struct gic_chip_data *gic);
void gic_dist_save(struct gic_chip_data *gic);
void gic_dist_restore(struct gic_chip_data *gic);

/*
 * Subdrivers that need some preparatory work can initialize their
 * chips and call this to register their GICs.
 */
int gic_of_init(struct device_node *node, struct device_node *parent);

/*
 * Initialises and registers a non-root or child GIC chip. Memory for
 * the gic_chip_data structure is dynamically allocated.
 */
int gic_of_init_child(struct device *dev, struct gic_chip_data **gic, int irq);

/*
 * Legacy platforms not converted to DT yet must use this to init
 * their GIC
 */
void gic_init(unsigned int nr, int start,
	      void __iomem *dist , void __iomem *cpu);

int gicv2m_init(struct fwnode_handle *parent_handle,
		struct irq_domain *parent);

void gic_send_sgi(unsigned int cpu_id, unsigned int irq);
int gic_get_cpu_id(unsigned int cpu);
void gic_migrate_target(unsigned int new_cpu_id);
unsigned long gic_get_sgir_physaddr(void);

#endif /* __ASSEMBLY */
#endif
OpenPOWER on IntegriCloud