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Diffstat (limited to 'include/drivers/arm/gicv2.h')
| -rw-r--r-- | include/drivers/arm/gicv2.h | 195 |
1 files changed, 195 insertions, 0 deletions
diff --git a/include/drivers/arm/gicv2.h b/include/drivers/arm/gicv2.h new file mode 100644 index 00000000..6e8322e1 --- /dev/null +++ b/include/drivers/arm/gicv2.h @@ -0,0 +1,195 @@ +/* + * Copyright (c) 2015-2017, ARM Limited and Contributors. All rights reserved. + * + * SPDX-License-Identifier: BSD-3-Clause + */ + +#ifndef __GICV2_H__ +#define __GICV2_H__ + +/******************************************************************************* + * GICv2 miscellaneous definitions + ******************************************************************************/ + +/* Interrupt group definitions */ +#define GICV2_INTR_GROUP0 0 +#define GICV2_INTR_GROUP1 1 + +/* Interrupt IDs reported by the HPPIR and IAR registers */ +#define PENDING_G1_INTID 1022 + +/* GICv2 can only target up to 8 PEs */ +#define GICV2_MAX_TARGET_PE 8 + +/******************************************************************************* + * GICv2 specific Distributor interface register offsets and constants. + ******************************************************************************/ +#define GICD_ITARGETSR 0x800 +#define GICD_SGIR 0xF00 +#define GICD_CPENDSGIR 0xF10 +#define GICD_SPENDSGIR 0xF20 +#define GICD_PIDR2_GICV2 0xFE8 + +#define ITARGETSR_SHIFT 2 +#define GIC_TARGET_CPU_MASK 0xff + +#define CPENDSGIR_SHIFT 2 +#define SPENDSGIR_SHIFT CPENDSGIR_SHIFT + +#define SGIR_TGTLSTFLT_SHIFT 24 +#define SGIR_TGTLSTFLT_MASK 0x3 +#define SGIR_TGTLST_SHIFT 16 +#define SGIR_TGTLST_MASK 0xff +#define SGIR_INTID_MASK 0xf + +#define SGIR_TGT_SPECIFIC 0 + +#define GICV2_SGIR_VALUE(tgt_lst_flt, tgt, intid) \ + ((((tgt_lst_flt) & SGIR_TGTLSTFLT_MASK) << SGIR_TGTLSTFLT_SHIFT) | \ + (((tgt) & SGIR_TGTLST_MASK) << SGIR_TGTLST_SHIFT) | \ + ((intid) & SGIR_INTID_MASK)) + +/******************************************************************************* + * GICv2 specific CPU interface register offsets and constants. + ******************************************************************************/ +/* Physical CPU Interface registers */ +#define GICC_CTLR 0x0 +#define GICC_PMR 0x4 +#define GICC_BPR 0x8 +#define GICC_IAR 0xC +#define GICC_EOIR 0x10 +#define GICC_RPR 0x14 +#define GICC_HPPIR 0x18 +#define GICC_AHPPIR 0x28 +#define GICC_IIDR 0xFC +#define GICC_DIR 0x1000 +#define GICC_PRIODROP GICC_EOIR + +/* GICC_CTLR bit definitions */ +#define EOI_MODE_NS (1 << 10) +#define EOI_MODE_S (1 << 9) +#define IRQ_BYP_DIS_GRP1 (1 << 8) +#define FIQ_BYP_DIS_GRP1 (1 << 7) +#define IRQ_BYP_DIS_GRP0 (1 << 6) +#define FIQ_BYP_DIS_GRP0 (1 << 5) +#define CBPR (1 << 4) +#define FIQ_EN_SHIFT 3 +#define FIQ_EN_BIT (1 << FIQ_EN_SHIFT) +#define ACK_CTL (1 << 2) + +/* GICC_IIDR bit masks and shifts */ +#define GICC_IIDR_PID_SHIFT 20 +#define GICC_IIDR_ARCH_SHIFT 16 +#define GICC_IIDR_REV_SHIFT 12 +#define GICC_IIDR_IMP_SHIFT 0 + +#define GICC_IIDR_PID_MASK 0xfff +#define GICC_IIDR_ARCH_MASK 0xf +#define GICC_IIDR_REV_MASK 0xf +#define GICC_IIDR_IMP_MASK 0xfff + +/* HYP view virtual CPU Interface registers */ +#define GICH_CTL 0x0 +#define GICH_VTR 0x4 +#define GICH_ELRSR0 0x30 +#define GICH_ELRSR1 0x34 +#define GICH_APR0 0xF0 +#define GICH_LR_BASE 0x100 + +/* Virtual CPU Interface registers */ +#define GICV_CTL 0x0 +#define GICV_PRIMASK 0x4 +#define GICV_BP 0x8 +#define GICV_INTACK 0xC +#define GICV_EOI 0x10 +#define GICV_RUNNINGPRI 0x14 +#define GICV_HIGHESTPEND 0x18 +#define GICV_DEACTIVATE 0x1000 + +/* GICD_CTLR bit definitions */ +#define CTLR_ENABLE_G1_SHIFT 1 +#define CTLR_ENABLE_G1_MASK 0x1 +#define CTLR_ENABLE_G1_BIT (1 << CTLR_ENABLE_G1_SHIFT) + +/* Interrupt ID mask for HPPIR, AHPPIR, IAR and AIAR CPU Interface registers */ +#define INT_ID_MASK 0x3ff + +#ifndef __ASSEMBLY__ + +#include <interrupt_props.h> +#include <stdint.h> + +/******************************************************************************* + * This structure describes some of the implementation defined attributes of + * the GICv2 IP. It is used by the platform port to specify these attributes + * in order to initialize the GICv2 driver. The attributes are described + * below. + * + * The 'gicd_base' field contains the base address of the Distributor interface + * programmer's view. + * + * The 'gicc_base' field contains the base address of the CPU Interface + * programmer's view. + * + * The 'g0_interrupt_array' field is a pointer to an array in which each entry + * corresponds to an ID of a Group 0 interrupt. This field is ignored when + * 'interrupt_props' field is used. This field is deprecated. + * + * The 'g0_interrupt_num' field contains the number of entries in the + * 'g0_interrupt_array'. This field is ignored when 'interrupt_props' field is + * used. This field is deprecated. + * + * The 'target_masks' is a pointer to an array containing 'target_masks_num' + * elements. The GIC driver will populate the array with per-PE target mask to + * use to when targeting interrupts. + * + * The 'interrupt_props' field is a pointer to an array that enumerates secure + * interrupts and their properties. If this field is not NULL, both + * 'g0_interrupt_array' and 'g1s_interrupt_array' fields are ignored. + * + * The 'interrupt_props_num' field contains the number of entries in the + * 'interrupt_props' array. If this field is non-zero, 'g0_interrupt_num' is + * ignored. + ******************************************************************************/ +typedef struct gicv2_driver_data { + uintptr_t gicd_base; + uintptr_t gicc_base; +#if !ERROR_DEPRECATED + unsigned int g0_interrupt_num; + const unsigned int *g0_interrupt_array; +#endif + unsigned int *target_masks; + unsigned int target_masks_num; + const interrupt_prop_t *interrupt_props; + unsigned int interrupt_props_num; +} gicv2_driver_data_t; + +/******************************************************************************* + * Function prototypes + ******************************************************************************/ +void gicv2_driver_init(const gicv2_driver_data_t *plat_driver_data); +void gicv2_distif_init(void); +void gicv2_pcpu_distif_init(void); +void gicv2_cpuif_enable(void); +void gicv2_cpuif_disable(void); +unsigned int gicv2_is_fiq_enabled(void); +unsigned int gicv2_get_pending_interrupt_type(void); +unsigned int gicv2_get_pending_interrupt_id(void); +unsigned int gicv2_acknowledge_interrupt(void); +void gicv2_end_of_interrupt(unsigned int id); +unsigned int gicv2_get_interrupt_group(unsigned int id); +unsigned int gicv2_get_running_priority(void); +void gicv2_set_pe_target_mask(unsigned int proc_num); +unsigned int gicv2_get_interrupt_active(unsigned int id); +void gicv2_enable_interrupt(unsigned int id); +void gicv2_disable_interrupt(unsigned int id); +void gicv2_set_interrupt_priority(unsigned int id, unsigned int priority); +void gicv2_set_interrupt_type(unsigned int id, unsigned int type); +void gicv2_raise_sgi(int sgi_num, int proc_num); +void gicv2_set_spi_routing(unsigned int id, int proc_num); +void gicv2_set_interrupt_pending(unsigned int id); +void gicv2_clear_interrupt_pending(unsigned int id); +unsigned int gicv2_set_pmr(unsigned int mask); + +#endif /* __ASSEMBLY__ */ +#endif /* __GICV2_H__ */ |