tools/testing/selftests/kvm/include/arm64/gic.h

Source file repositories/reference/linux-study-clean/tools/testing/selftests/kvm/include/arm64/gic.h

File Facts

System
Linux kernel
Corpus path
tools/testing/selftests/kvm/include/arm64/gic.h
Extension
.h
Size
2122 bytes
Lines
66
Domain
Support Tooling And Documentation
Bucket
tools
Inferred role
Support Tooling And Documentation: implementation source
Status
source implementation candidate

Why This File Exists

Repository support layer: documentation, build tooling, samples, user-space helper tools, generated initramfs support, licenses, and validation utilities.

Dependency Surface

Detected Declarations

Annotated Snippet

#ifndef SELFTEST_KVM_GIC_H
#define SELFTEST_KVM_GIC_H

#include <asm/kvm.h>

enum gic_type {
	GIC_V3,
	GIC_TYPE_MAX,
};

/*
 * Note that the redistributor frames are at the end, as the range scales
 * with the number of vCPUs in the VM.
 */
#define GITS_BASE_GPA		0x8000000ULL
#define GICD_BASE_GPA		(GITS_BASE_GPA + KVM_VGIC_V3_ITS_SIZE)
#define GICR_BASE_GPA		(GICD_BASE_GPA + KVM_VGIC_V3_DIST_SIZE)

/* The GIC is identity-mapped into the guest at the time of setup. */
#define GITS_BASE_GVA		((volatile void *)GITS_BASE_GPA)
#define GICD_BASE_GVA		((volatile void *)GICD_BASE_GPA)
#define GICR_BASE_GVA		((volatile void *)GICR_BASE_GPA)

#define MIN_SGI			0
#define MIN_PPI			16
#define MIN_SPI			32
#define MAX_SPI			1019
#define IAR_SPURIOUS		1023

#define INTID_IS_SGI(intid)	(0       <= (intid) && (intid) < MIN_PPI)
#define INTID_IS_PPI(intid)	(MIN_PPI <= (intid) && (intid) < MIN_SPI)
#define INTID_IS_SPI(intid)	(MIN_SPI <= (intid) && (intid) <= MAX_SPI)

void gic_init(enum gic_type type, unsigned int nr_cpus);
void gic_irq_enable(unsigned int intid);
void gic_irq_disable(unsigned int intid);
unsigned int gic_get_and_ack_irq(void);
void gic_set_eoi(unsigned int intid);
void gic_set_dir(unsigned int intid);

/*
 * Sets the EOI mode. When split is false, EOI just drops the priority. When
 * split is true, EOI drops the priority and deactivates the interrupt.
 */
void gic_set_eoi_split(bool split);
void gic_set_priority_mask(u64 mask);
void gic_set_priority(u32 intid, u32 prio);
void gic_irq_set_active(unsigned int intid);
void gic_irq_clear_active(unsigned int intid);
bool gic_irq_get_active(unsigned int intid);
void gic_irq_set_pending(unsigned int intid);
void gic_irq_clear_pending(unsigned int intid);
bool gic_irq_get_pending(unsigned int intid);
void gic_irq_set_config(unsigned int intid, bool is_edge);
void gic_irq_set_group(unsigned int intid, bool group);

void gic_rdist_enable_lpis(gpa_t cfg_table, size_t cfg_table_size,
			   gpa_t pend_table);

#endif /* SELFTEST_KVM_GIC_H */

Annotation

Implementation Notes