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 978ad7e95SAndre Przywara #define GIC_NR_PRIVATE_IRQS 32 1078ad7e95SAndre Przywara #define GIC_FIRST_SPI GIC_NR_PRIVATE_IRQS 1100cc96f0SAndrew Jones 1200cc96f0SAndrew Jones /* Distributor registers */ 1300cc96f0SAndrew Jones #define GICD_CTLR 0x0000 1400cc96f0SAndrew Jones #define GICD_TYPER 0x0004 1578ad7e95SAndre Przywara #define GICD_IIDR 0x0008 1691a6c3ceSAndrew Jones #define GICD_IGROUPR 0x0080 1700cc96f0SAndrew Jones #define GICD_ISENABLER 0x0100 18f2f220deSAlexander Graf #define GICD_ISPENDR 0x0200 19f2f220deSAlexander Graf #define GICD_ICPENDR 0x0280 20c152d8bcSChristoffer Dall #define GICD_ISACTIVER 0x0300 21c152d8bcSChristoffer Dall #define GICD_ICACTIVER 0x0380 2200cc96f0SAndrew Jones #define GICD_IPRIORITYR 0x0400 23fe572a5eSAndre Przywara #define GICD_ITARGETSR 0x0800 24ac4a67b6SAndrew Jones #define GICD_SGIR 0x0f00 2578ad7e95SAndre Przywara #define GICD_ICPIDR2 0x0fe8 2600cc96f0SAndrew Jones 2700cc96f0SAndrew Jones #define GICD_TYPER_IRQS(typer) ((((typer) & 0x1f) + 1) * 32) 2800cc96f0SAndrew Jones #define GICD_INT_EN_SET_SGI 0x0000ffff 2900cc96f0SAndrew Jones #define GICD_INT_DEF_PRI_X4 0xa0a0a0a0 3000cc96f0SAndrew Jones 3100cc96f0SAndrew Jones /* CPU interface registers */ 3200cc96f0SAndrew Jones #define GICC_CTLR 0x0000 3300cc96f0SAndrew Jones #define GICC_PMR 0x0004 34ac4a67b6SAndrew Jones #define GICC_IAR 0x000c 35ac4a67b6SAndrew Jones #define GICC_EOIR 0x0010 3600cc96f0SAndrew Jones 3700cc96f0SAndrew Jones #define GICC_INT_PRI_THRESHOLD 0xf0 38ac4a67b6SAndrew Jones #define GICC_INT_SPURIOUS 0x3ff 3900cc96f0SAndrew Jones 4091a6c3ceSAndrew Jones #include <asm/gic-v2.h> 4191a6c3ceSAndrew Jones #include <asm/gic-v3.h> 4291a6c3ceSAndrew Jones 43f2f220deSAlexander Graf #define PPI(irq) ((irq) + 16) 44*00d7e265SAlexander Graf #define SPI(irq) ((irq) + GIC_FIRST_SPI) 45f2f220deSAlexander Graf 4600cc96f0SAndrew Jones #ifndef __ASSEMBLY__ 472e2d471dSAndrew Jones #include <asm/cpumask.h> 4800cc96f0SAndrew Jones 4900cc96f0SAndrew Jones /* 5000cc96f0SAndrew Jones * gic_init will try to find all known gics, and then 5100cc96f0SAndrew Jones * initialize the gic data for the one found. 5200cc96f0SAndrew Jones * returns 5300cc96f0SAndrew Jones * 0 : no gic was found 5400cc96f0SAndrew Jones * > 0 : the gic version of the gic found 5500cc96f0SAndrew Jones */ 5600cc96f0SAndrew Jones extern int gic_init(void); 5700cc96f0SAndrew Jones 582e2d471dSAndrew Jones /* 592e2d471dSAndrew Jones * gic_enable_defaults enables the gic with basic but useful 602e2d471dSAndrew Jones * settings. gic_enable_defaults will call gic_init if it has 612e2d471dSAndrew Jones * not yet been invoked. 622e2d471dSAndrew Jones */ 632e2d471dSAndrew Jones extern void gic_enable_defaults(void); 642e2d471dSAndrew Jones 652e2d471dSAndrew Jones /* 662e2d471dSAndrew Jones * After enabling the gic with gic_enable_defaults the functions 672e2d471dSAndrew Jones * below will work with any supported gic version. 682e2d471dSAndrew Jones */ 692e2d471dSAndrew Jones extern int gic_version(void); 702e2d471dSAndrew Jones extern u32 gic_read_iar(void); 712e2d471dSAndrew Jones extern u32 gic_iar_irqnr(u32 iar); 722e2d471dSAndrew Jones extern void gic_write_eoir(u32 irqstat); 732e2d471dSAndrew Jones extern void gic_ipi_send_single(int irq, int cpu); 742e2d471dSAndrew Jones extern void gic_ipi_send_mask(int irq, const cpumask_t *dest); 752e2d471dSAndrew Jones 7600cc96f0SAndrew Jones #endif /* !__ASSEMBLY__ */ 7700cc96f0SAndrew Jones #endif /* _ASMARM_GIC_H_ */ 78