xref: /rk3399_ARM-atf/include/drivers/arm/gic_common.h (revision 36a8f8fd471ae7c6dc8a810aaa8ff8734706234e)
1 /*
2  * Copyright (c) 2015-2017, ARM Limited and Contributors. All rights reserved.
3  *
4  * SPDX-License-Identifier: BSD-3-Clause
5  */
6 
7 #ifndef __GIC_COMMON_H__
8 #define __GIC_COMMON_H__
9 
10 /*******************************************************************************
11  * GIC Distributor interface general definitions
12  ******************************************************************************/
13 /* Constants to categorise interrupts */
14 #define MIN_SGI_ID		0
15 #define MIN_PPI_ID		16
16 #define MIN_SPI_ID		32
17 #define MAX_SPI_ID		1019
18 
19 #define TOTAL_SPI_INTR_NUM	(MAX_SPI_ID - MIN_SPI_ID + 1)
20 #define TOTAL_PCPU_INTR_NUM	(MIN_SPI_ID - MIN_SGI_ID)
21 
22 /* Mask for the priority field common to all GIC interfaces */
23 #define GIC_PRI_MASK			0xff
24 
25 /* Constant to indicate a spurious interrupt in all GIC versions */
26 #define GIC_SPURIOUS_INTERRUPT		1023
27 
28 /* Constants to categorise priorities */
29 #define GIC_HIGHEST_SEC_PRIORITY	0
30 #define GIC_LOWEST_SEC_PRIORITY		127
31 #define GIC_HIGHEST_NS_PRIORITY		128
32 #define GIC_LOWEST_NS_PRIORITY		254 /* 255 would disable an interrupt */
33 
34 /*******************************************************************************
35  * GIC Distributor interface register offsets that are common to GICv3 & GICv2
36  ******************************************************************************/
37 #define GICD_CTLR		0x0
38 #define GICD_TYPER		0x4
39 #define GICD_IIDR		0x8
40 #define GICD_IGROUPR		0x80
41 #define GICD_ISENABLER		0x100
42 #define GICD_ICENABLER		0x180
43 #define GICD_ISPENDR		0x200
44 #define GICD_ICPENDR		0x280
45 #define GICD_ISACTIVER		0x300
46 #define GICD_ICACTIVER		0x380
47 #define GICD_IPRIORITYR		0x400
48 #define GICD_ICFGR		0xc00
49 #define GICD_NSACR		0xe00
50 
51 /* GICD_CTLR bit definitions */
52 #define CTLR_ENABLE_G0_SHIFT		0
53 #define CTLR_ENABLE_G0_MASK		0x1
54 #define CTLR_ENABLE_G0_BIT		(1 << CTLR_ENABLE_G0_SHIFT)
55 
56 
57 /*******************************************************************************
58  * GIC Distributor interface register constants that are common to GICv3 & GICv2
59  ******************************************************************************/
60 #define PIDR2_ARCH_REV_SHIFT	4
61 #define PIDR2_ARCH_REV_MASK	0xf
62 
63 /* GICv3 revision as reported by the PIDR2 register */
64 #define ARCH_REV_GICV3		0x3
65 /* GICv2 revision as reported by the PIDR2 register */
66 #define ARCH_REV_GICV2		0x2
67 
68 #define IGROUPR_SHIFT		5
69 #define ISENABLER_SHIFT		5
70 #define ICENABLER_SHIFT		ISENABLER_SHIFT
71 #define ISPENDR_SHIFT		5
72 #define ICPENDR_SHIFT		ISPENDR_SHIFT
73 #define ISACTIVER_SHIFT		5
74 #define ICACTIVER_SHIFT		ISACTIVER_SHIFT
75 #define IPRIORITYR_SHIFT	2
76 #define ICFGR_SHIFT		4
77 #define NSACR_SHIFT		4
78 
79 /* GICD_TYPER shifts and masks */
80 #define TYPER_IT_LINES_NO_SHIFT	0
81 #define TYPER_IT_LINES_NO_MASK	0x1f
82 
83 /* Value used to initialize Normal world interrupt priorities four at a time */
84 #define GICD_IPRIORITYR_DEF_VAL			\
85 	(GIC_HIGHEST_NS_PRIORITY	|	\
86 	(GIC_HIGHEST_NS_PRIORITY << 8)	|	\
87 	(GIC_HIGHEST_NS_PRIORITY << 16)	|	\
88 	(GIC_HIGHEST_NS_PRIORITY << 24))
89 
90 #endif /* __GIC_COMMON_H__ */
91