100cc96f0SAndrew Jones /* 200cc96f0SAndrew Jones * Copyright (C) 2016, Red Hat Inc, Andrew Jones <drjones@redhat.com> 300cc96f0SAndrew Jones * 400cc96f0SAndrew Jones * This work is licensed under the terms of the GNU LGPL, version 2. 500cc96f0SAndrew Jones */ 600cc96f0SAndrew Jones #ifndef _ASMARM_GIC_H_ 700cc96f0SAndrew Jones #define _ASMARM_GIC_H_ 800cc96f0SAndrew Jones 900cc96f0SAndrew Jones 1000cc96f0SAndrew Jones /* Distributor registers */ 1100cc96f0SAndrew Jones #define GICD_CTLR 0x0000 1200cc96f0SAndrew Jones #define GICD_TYPER 0x0004 1391a6c3ceSAndrew Jones #define GICD_IGROUPR 0x0080 1400cc96f0SAndrew Jones #define GICD_ISENABLER 0x0100 15*c152d8bcSChristoffer Dall #define GICD_ISACTIVER 0x0300 16*c152d8bcSChristoffer Dall #define GICD_ICACTIVER 0x0380 1700cc96f0SAndrew Jones #define GICD_IPRIORITYR 0x0400 18ac4a67b6SAndrew Jones #define GICD_SGIR 0x0f00 1900cc96f0SAndrew Jones 2000cc96f0SAndrew Jones #define GICD_TYPER_IRQS(typer) ((((typer) & 0x1f) + 1) * 32) 2100cc96f0SAndrew Jones #define GICD_INT_EN_SET_SGI 0x0000ffff 2200cc96f0SAndrew Jones #define GICD_INT_DEF_PRI_X4 0xa0a0a0a0 2300cc96f0SAndrew Jones 2400cc96f0SAndrew Jones /* CPU interface registers */ 2500cc96f0SAndrew Jones #define GICC_CTLR 0x0000 2600cc96f0SAndrew Jones #define GICC_PMR 0x0004 27ac4a67b6SAndrew Jones #define GICC_IAR 0x000c 28ac4a67b6SAndrew Jones #define GICC_EOIR 0x0010 2900cc96f0SAndrew Jones 3000cc96f0SAndrew Jones #define GICC_INT_PRI_THRESHOLD 0xf0 31ac4a67b6SAndrew Jones #define GICC_INT_SPURIOUS 0x3ff 3200cc96f0SAndrew Jones 3391a6c3ceSAndrew Jones #include <asm/gic-v2.h> 3491a6c3ceSAndrew Jones #include <asm/gic-v3.h> 3591a6c3ceSAndrew Jones 3600cc96f0SAndrew Jones #ifndef __ASSEMBLY__ 372e2d471dSAndrew Jones #include <asm/cpumask.h> 3800cc96f0SAndrew Jones 3900cc96f0SAndrew Jones /* 4000cc96f0SAndrew Jones * gic_init will try to find all known gics, and then 4100cc96f0SAndrew Jones * initialize the gic data for the one found. 4200cc96f0SAndrew Jones * returns 4300cc96f0SAndrew Jones * 0 : no gic was found 4400cc96f0SAndrew Jones * > 0 : the gic version of the gic found 4500cc96f0SAndrew Jones */ 4600cc96f0SAndrew Jones extern int gic_init(void); 4700cc96f0SAndrew Jones 482e2d471dSAndrew Jones /* 492e2d471dSAndrew Jones * gic_enable_defaults enables the gic with basic but useful 502e2d471dSAndrew Jones * settings. gic_enable_defaults will call gic_init if it has 512e2d471dSAndrew Jones * not yet been invoked. 522e2d471dSAndrew Jones */ 532e2d471dSAndrew Jones extern void gic_enable_defaults(void); 542e2d471dSAndrew Jones 552e2d471dSAndrew Jones /* 562e2d471dSAndrew Jones * After enabling the gic with gic_enable_defaults the functions 572e2d471dSAndrew Jones * below will work with any supported gic version. 582e2d471dSAndrew Jones */ 592e2d471dSAndrew Jones extern int gic_version(void); 602e2d471dSAndrew Jones extern u32 gic_read_iar(void); 612e2d471dSAndrew Jones extern u32 gic_iar_irqnr(u32 iar); 622e2d471dSAndrew Jones extern void gic_write_eoir(u32 irqstat); 632e2d471dSAndrew Jones extern void gic_ipi_send_single(int irq, int cpu); 642e2d471dSAndrew Jones extern void gic_ipi_send_mask(int irq, const cpumask_t *dest); 652e2d471dSAndrew Jones 6600cc96f0SAndrew Jones #endif /* !__ASSEMBLY__ */ 6700cc96f0SAndrew Jones #endif /* _ASMARM_GIC_H_ */ 68