1 /* 2 * Copyright (C) 2016, Red Hat Inc, Andrew Jones <drjones@redhat.com> 3 * 4 * This work is licensed under the terms of the GNU LGPL, version 2. 5 */ 6 #ifndef _ASMARM_GIC_H_ 7 #define _ASMARM_GIC_H_ 8 9 #define GIC_NR_PRIVATE_IRQS 32 10 #define GIC_FIRST_SPI GIC_NR_PRIVATE_IRQS 11 12 /* Distributor registers */ 13 #define GICD_CTLR 0x0000 14 #define GICD_TYPER 0x0004 15 #define GICD_IIDR 0x0008 16 #define GICD_IGROUPR 0x0080 17 #define GICD_ISENABLER 0x0100 18 #define GICD_ICENABLER 0x0180 19 #define GICD_ISPENDR 0x0200 20 #define GICD_ICPENDR 0x0280 21 #define GICD_ISACTIVER 0x0300 22 #define GICD_ICACTIVER 0x0380 23 #define GICD_IPRIORITYR 0x0400 24 #define GICD_ITARGETSR 0x0800 25 #define GICD_SGIR 0x0f00 26 #define GICD_ICPIDR2 0x0fe8 27 28 #define GICD_TYPER_IRQS(typer) ((((typer) & 0x1f) + 1) * 32) 29 #define GICD_INT_EN_SET_SGI 0x0000ffff 30 #define GICD_INT_DEF_PRI_X4 0xa0a0a0a0 31 32 /* CPU interface registers */ 33 #define GICC_CTLR 0x0000 34 #define GICC_PMR 0x0004 35 #define GICC_IAR 0x000c 36 #define GICC_EOIR 0x0010 37 38 #define GICC_INT_PRI_THRESHOLD 0xf0 39 #define GICC_INT_SPURIOUS 0x3ff 40 41 #include <asm/gic-v2.h> 42 #include <asm/gic-v3.h> 43 44 #define PPI(irq) ((irq) + 16) 45 #define SPI(irq) ((irq) + GIC_FIRST_SPI) 46 47 #ifndef __ASSEMBLY__ 48 #include <asm/cpumask.h> 49 50 /* 51 * gic_init will try to find all known gics, and then 52 * initialize the gic data for the one found. 53 * returns 54 * 0 : no gic was found 55 * > 0 : the gic version of the gic found 56 */ 57 extern int gic_init(void); 58 59 /* 60 * gic_enable_defaults enables the gic with basic but useful 61 * settings. gic_enable_defaults will call gic_init if it has 62 * not yet been invoked. 63 */ 64 extern void gic_enable_defaults(void); 65 66 /* 67 * After enabling the gic with gic_enable_defaults the functions 68 * below will work with any supported gic version. 69 */ 70 extern int gic_version(void); 71 extern u32 gic_read_iar(void); 72 extern u32 gic_iar_irqnr(u32 iar); 73 extern void gic_write_eoir(u32 irqstat); 74 extern void gic_ipi_send_single(int irq, int cpu); 75 extern void gic_ipi_send_mask(int irq, const cpumask_t *dest); 76 77 #endif /* !__ASSEMBLY__ */ 78 #endif /* _ASMARM_GIC_H_ */ 79