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Diffstat (limited to 'include/drivers/arm/gic_common.h')
| -rw-r--r-- | include/drivers/arm/gic_common.h | 99 |
1 files changed, 99 insertions, 0 deletions
diff --git a/include/drivers/arm/gic_common.h b/include/drivers/arm/gic_common.h new file mode 100644 index 0000000..dc23721 --- /dev/null +++ b/include/drivers/arm/gic_common.h @@ -0,0 +1,99 @@ +/* + * Copyright (c) 2015-2020, ARM Limited and Contributors. All rights reserved. + * + * SPDX-License-Identifier: BSD-3-Clause + */ + +#ifndef GIC_COMMON_H +#define GIC_COMMON_H + +#include <lib/utils_def.h> + +/******************************************************************************* + * GIC Distributor interface general definitions + ******************************************************************************/ +/* Constants to categorise interrupts */ +#define MIN_SGI_ID U(0) +#define MIN_SEC_SGI_ID U(8) +#define MIN_PPI_ID U(16) +#define MIN_SPI_ID U(32) +#define MAX_SPI_ID U(1019) + +#define TOTAL_SPI_INTR_NUM (MAX_SPI_ID - MIN_SPI_ID + U(1)) +#define TOTAL_PCPU_INTR_NUM (MIN_SPI_ID - MIN_SGI_ID) + +/* Mask for the priority field common to all GIC interfaces */ +#define GIC_PRI_MASK U(0xff) + +/* Mask for the configuration field common to all GIC interfaces */ +#define GIC_CFG_MASK U(0x3) + +/* Constant to indicate a spurious interrupt in all GIC versions */ +#define GIC_SPURIOUS_INTERRUPT U(1023) + +/* Interrupt configurations: 2-bit fields with LSB reserved */ +#define GIC_INTR_CFG_LEVEL (0 << 1) +#define GIC_INTR_CFG_EDGE (1 << 1) + +/* Highest possible interrupt priorities */ +#define GIC_HIGHEST_SEC_PRIORITY U(0x00) +#define GIC_HIGHEST_NS_PRIORITY U(0x80) + +/******************************************************************************* + * Common GIC Distributor interface register offsets + ******************************************************************************/ +#define GICD_CTLR U(0x0) +#define GICD_TYPER U(0x4) +#define GICD_IIDR U(0x8) +#define GICD_IGROUPR U(0x80) +#define GICD_ISENABLER U(0x100) +#define GICD_ICENABLER U(0x180) +#define GICD_ISPENDR U(0x200) +#define GICD_ICPENDR U(0x280) +#define GICD_ISACTIVER U(0x300) +#define GICD_ICACTIVER U(0x380) +#define GICD_IPRIORITYR U(0x400) +#define GICD_ICFGR U(0xc00) +#define GICD_NSACR U(0xe00) + +/* GICD_CTLR bit definitions */ +#define CTLR_ENABLE_G0_SHIFT 0 +#define CTLR_ENABLE_G0_MASK U(0x1) +#define CTLR_ENABLE_G0_BIT BIT_32(CTLR_ENABLE_G0_SHIFT) + +/******************************************************************************* + * Common GIC Distributor interface register constants + ******************************************************************************/ +#define PIDR2_ARCH_REV_SHIFT 4 +#define PIDR2_ARCH_REV_MASK U(0xf) + +/* GIC revision as reported by PIDR2.ArchRev register field */ +#define ARCH_REV_GICV1 U(0x1) +#define ARCH_REV_GICV2 U(0x2) +#define ARCH_REV_GICV3 U(0x3) +#define ARCH_REV_GICV4 U(0x4) + +#define IGROUPR_SHIFT 5 +#define ISENABLER_SHIFT 5 +#define ICENABLER_SHIFT ISENABLER_SHIFT +#define ISPENDR_SHIFT 5 +#define ICPENDR_SHIFT ISPENDR_SHIFT +#define ISACTIVER_SHIFT 5 +#define ICACTIVER_SHIFT ISACTIVER_SHIFT +#define IPRIORITYR_SHIFT 2 +#define ITARGETSR_SHIFT 2 +#define ICFGR_SHIFT 4 +#define NSACR_SHIFT 4 + +/* GICD_TYPER shifts and masks */ +#define TYPER_IT_LINES_NO_SHIFT U(0) +#define TYPER_IT_LINES_NO_MASK U(0x1f) + +/* Value used to initialize Normal world interrupt priorities four at a time */ +#define GICD_IPRIORITYR_DEF_VAL \ + (GIC_HIGHEST_NS_PRIORITY | \ + (GIC_HIGHEST_NS_PRIORITY << 8) | \ + (GIC_HIGHEST_NS_PRIORITY << 16) | \ + (GIC_HIGHEST_NS_PRIORITY << 24)) + +#endif /* GIC_COMMON_H */ |