1 - GICv2其他定义

/*******************************************************************************

GICv2 miscellaneous definitions
******************************************************************************/

/* Interrupt group definitions */
#define GICV2_INTR_GROUP0 U(0)
#define GICV2_INTR_GROUP1 U(1)

/* Interrupt IDs reported by the HPPIR and IAR registers */
#define PENDING_G1_INTID U(1022)

/* GICv2 can only target up to 8 PEs */
#define GICV2_MAX_TARGET_PE U(8)

2 - GICv2特定的分发器接口寄存器偏移量和常量。

/*******************************************************************************

GICv2 specific Distributor interface register offsets and constants.
******************************************************************************/
#define GICD_ITARGETSR U(0x800)
#define GICD_SGIR U(0xF00)
#define GICD_CPENDSGIR U(0xF10)
#define GICD_SPENDSGIR U(0xF20)

1 - 一些GICv2实现不用刻意遵循了规范，并将此寄存器置于不同的地址。允许在platform_def.h中重写它作为解决方法。

Some GICv2 implementations violate the specification and have this register
at a different address. Allow overriding it in platform_def.h as workaround.
*/
#ifndef GICD_PIDR2_GICV2
#define GICD_PIDR2_GICV2 U(0xFE8)
#endif

#define ITARGETSR_SHIFT 2
#define GIC_TARGET_CPU_MASK U(0xff)

#define CPENDSGIR_SHIFT 2
#define SPENDSGIR_SHIFT CPENDSGIR_SHIFT

#define SGIR_TGTLSTFLT_SHIFT 24
#define SGIR_TGTLSTFLT_MASK U(0x3)
#define SGIR_TGTLST_SHIFT 16
#define SGIR_TGTLST_MASK U(0xff)
#define SGIR_INTID_MASK ULL(0xf)

#define SGIR_TGT_SPECIFIC U(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))

3 - GICv2特定的CPU接口寄存器偏移量和常数。

/*******************************************************************************

GICv2 specific CPU interface register offsets and constants.
*****************************************************************************/
/ Physical CPU Interface registers */
#define GICC_CTLR U(0x0)
#define GICC_PMR U(0x4)
#define GICC_BPR U(0x8)
#define GICC_IAR U(0xC)
#define GICC_EOIR U(0x10)
#define GICC_RPR U(0x14)
#define GICC_HPPIR U(0x18)
#define GICC_AHPPIR U(0x28)
#define GICC_IIDR U(0xFC)
#define GICC_DIR U(0x1000)
#define GICC_PRIODROP GICC_EOIR

/* GICC_CTLR bit definitions */
#define EOI_MODE_NS BIT_32(10)
#define EOI_MODE_S BIT_32(9)
#define IRQ_BYP_DIS_GRP1 BIT_32(8)
#define FIQ_BYP_DIS_GRP1 BIT_32(7)
#define IRQ_BYP_DIS_GRP0 BIT_32(6)
#define FIQ_BYP_DIS_GRP0 BIT_32(5)
#define CBPR BIT_32(4)
#define FIQ_EN_SHIFT 3
#define FIQ_EN_BIT BIT_32(FIQ_EN_SHIFT)
#define ACK_CTL BIT_32(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 U(0xfff)
#define GICC_IIDR_ARCH_MASK U(0xf)
#define GICC_IIDR_REV_MASK U(0xf)
#define GICC_IIDR_IMP_MASK U(0xfff)

/* HYP view virtual CPU Interface registers */
#define GICH_CTL U(0x0)
#define GICH_VTR U(0x4)
#define GICH_ELRSR0 U(0x30)
#define GICH_ELRSR1 U(0x34)
#define GICH_APR0 U(0xF0)
#define GICH_LR_BASE U(0x100)

/* Virtual CPU Interface registers */
#define GICV_CTL U(0x0)
#define GICV_PRIMASK U(0x4)
#define GICV_BP U(0x8)
#define GICV_INTACK U(0xC)
#define GICV_EOI U(0x10)
#define GICV_RUNNINGPRI U(0x14)
#define GICV_HIGHESTPEND U(0x18)
#define GICV_DEACTIVATE U(0x1000)

/* GICD_CTLR bit definitions */
#define CTLR_ENABLE_G1_SHIFT 1
#define CTLR_ENABLE_G1_MASK U(0x1)
#define CTLR_ENABLE_G1_BIT BIT_32(CTLR_ENABLE_G1_SHIFT)

/* Interrupt ID mask for HPPIR, AHPPIR, IAR and AIAR CPU Interface registers */
#define INT_ID_MASK U(0x3ff)

#ifndef ASSEMBLER

#include <cdefs.h>
#include <stdint.h>

4 - common/interrupt_props.h

#include <common/interrupt_props.h>

*此结构描述了*GICv2 IP的一些实现定义属性。平台端口使用它来指定这些属性，以便初始化GICv2驱动程序。属性描述如下。
*
*“gicd_base”字段包含分发器接口程序员视图的基地址。
*
*“gicc_base”字段包含CPU接口程序员视图的基地址。
*
*“target_mask”是指向包含“target_masks_num”元素的数组的指针。GIC驱动程序将使用每个PE目标掩码填充阵列，以便在确定中断目标时使用。
*
*“interrupt_props”字段是指向枚举安全中断及其财产的数组的指针。如果此字段不为NULL，将忽略“g0_trupt_array”和“g1s_interrupt_aArray”字段。
*
*“interrupt_props_num”字段包含“interrupt _props”数组中的条目数。如果此字段为非零，则忽略“g0_crupt_num”。

/*******************************************************************************

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 ‘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;
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);
void gicv2_interrupt_set_cfg(unsigned int id, unsigned int cfg);

#endif /* ASSEMBLER /
#endif / GICV2_H */

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ATF：Gicv源码文件系列-gicv2.h

1 - GICv2其他定义

2 - GICv2特定的分发器接口寄存器偏移量和常量。

1 - 一些GICv2实现不用刻意遵循了规范，并将此寄存器置于不同的地址。允许在platform_def.h中重写它作为解决方法。

3 - GICv2特定的CPU接口寄存器偏移量和常数。

4 - common/interrupt_props.h

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