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_ISPENDR 0x0200 19 #define GICD_ICPENDR 0x0280 20 #define GICD_ISACTIVER 0x0300 21 #define GICD_ICACTIVER 0x0380 22 #define GICD_IPRIORITYR 0x0400 23 #define GICD_ITARGETSR 0x0800 24 #define GICD_SGIR 0x0f00 25 #define GICD_ICPIDR2 0x0fe8 26 27 #define GICD_TYPER_IRQS(typer) ((((typer) & 0x1f) + 1) * 32) 28 #define GICD_INT_EN_SET_SGI 0x0000ffff 29 #define GICD_INT_DEF_PRI_X4 0xa0a0a0a0 30 31 /* CPU interface registers */ 32 #define GICC_CTLR 0x0000 33 #define GICC_PMR 0x0004 34 #define GICC_IAR 0x000c 35 #define GICC_EOIR 0x0010 36 37 #define GICC_INT_PRI_THRESHOLD 0xf0 38 #define GICC_INT_SPURIOUS 0x3ff 39 40 #include <asm/gic-v2.h> 41 #include <asm/gic-v3.h> 42 43 #define PPI(irq) ((irq) + 16) 44 45 #ifndef __ASSEMBLY__ 46 #include <asm/cpumask.h> 47 48 /* 49 * gic_init will try to find all known gics, and then 50 * initialize the gic data for the one found. 51 * returns 52 * 0 : no gic was found 53 * > 0 : the gic version of the gic found 54 */ 55 extern int gic_init(void); 56 57 /* 58 * gic_enable_defaults enables the gic with basic but useful 59 * settings. gic_enable_defaults will call gic_init if it has 60 * not yet been invoked. 61 */ 62 extern void gic_enable_defaults(void); 63 64 /* 65 * After enabling the gic with gic_enable_defaults the functions 66 * below will work with any supported gic version. 67 */ 68 extern int gic_version(void); 69 extern u32 gic_read_iar(void); 70 extern u32 gic_iar_irqnr(u32 iar); 71 extern void gic_write_eoir(u32 irqstat); 72 extern void gic_ipi_send_single(int irq, int cpu); 73 extern void gic_ipi_send_mask(int irq, const cpumask_t *dest); 74 75 #endif /* !__ASSEMBLY__ */ 76 #endif /* _ASMARM_GIC_H_ */ 77