include/linux/irqchip/arm-gic.h - linux - Git at Google

 /* SPDX-License-Identifier: GPL-2.0-only */
 /*
  *  include/linux/irqchip/arm-gic.h
  *
  *  Copyright (C) 2002 ARM Limited, All Rights Reserved.
  */
 #ifndef __LINUX_IRQCHIP_ARM_GIC_H
 #define __LINUX_IRQCHIP_ARM_GIC_H

 #define GIC_CPU_CTRL			0x00
 #define GIC_CPU_PRIMASK			0x04
 #define GIC_CPU_BINPOINT		0x08
 #define GIC_CPU_INTACK			0x0c
 #define GIC_CPU_EOI			0x10
 #define GIC_CPU_RUNNINGPRI		0x14
 #define GIC_CPU_HIGHPRI			0x18
 #define GIC_CPU_ALIAS_BINPOINT		0x1c
 #define GIC_CPU_ACTIVEPRIO		0xd0
 #define GIC_CPU_IDENT			0xfc
 #define GIC_CPU_DEACTIVATE		0x1000

 #define GICC_ENABLE			0x1
 #define GICC_INT_PRI_THRESHOLD		0xf0

 #define GIC_CPU_CTRL_EnableGrp0_SHIFT	0
 #define GIC_CPU_CTRL_EnableGrp0		(1 << GIC_CPU_CTRL_EnableGrp0_SHIFT)
 #define GIC_CPU_CTRL_EnableGrp1_SHIFT	1
 #define GIC_CPU_CTRL_EnableGrp1		(1 << GIC_CPU_CTRL_EnableGrp1_SHIFT)
 #define GIC_CPU_CTRL_AckCtl_SHIFT	2
 #define GIC_CPU_CTRL_AckCtl		(1 << GIC_CPU_CTRL_AckCtl_SHIFT)
 #define GIC_CPU_CTRL_FIQEn_SHIFT	3
 #define GIC_CPU_CTRL_FIQEn		(1 << GIC_CPU_CTRL_FIQEn_SHIFT)
 #define GIC_CPU_CTRL_CBPR_SHIFT		4
 #define GIC_CPU_CTRL_CBPR		(1 << GIC_CPU_CTRL_CBPR_SHIFT)
 #define GIC_CPU_CTRL_EOImodeNS_SHIFT	9
 #define GIC_CPU_CTRL_EOImodeNS		(1 << GIC_CPU_CTRL_EOImodeNS_SHIFT)

 #define GICC_IAR_INT_ID_MASK		0x3ff
 #define GICC_INT_SPURIOUS		1023
 #define GICC_DIS_BYPASS_MASK		0x1e0

 #define GIC_DIST_CTRL			0x000
 #define GIC_DIST_CTR			0x004
 #define GIC_DIST_IIDR			0x008
 #define GIC_DIST_IGROUP			0x080
 #define GIC_DIST_ENABLE_SET		0x100
 #define GIC_DIST_ENABLE_CLEAR		0x180
 #define GIC_DIST_PENDING_SET		0x200
 #define GIC_DIST_PENDING_CLEAR		0x280
 #define GIC_DIST_ACTIVE_SET		0x300
 #define GIC_DIST_ACTIVE_CLEAR		0x380
 #define GIC_DIST_PRI			0x400
 #define GIC_DIST_TARGET			0x800
 #define GIC_DIST_CONFIG			0xc00
 #define GIC_DIST_SOFTINT		0xf00
 #define GIC_DIST_SGI_PENDING_CLEAR	0xf10
 #define GIC_DIST_SGI_PENDING_SET	0xf20

 #define GICD_ENABLE			0x1
 #define GICD_DISABLE			0x0
 #define GICD_INT_ACTLOW_LVLTRIG		0x0
 #define GICD_INT_EN_CLR_X32		0xffffffff
 #define GICD_INT_EN_SET_SGI		0x0000ffff
 #define GICD_INT_EN_CLR_PPI		0xffff0000

 #define GICD_IIDR_IMPLEMENTER_SHIFT	0
 #define GICD_IIDR_IMPLEMENTER_MASK	(0xfff << GICD_IIDR_IMPLEMENTER_SHIFT)
 #define GICD_IIDR_REVISION_SHIFT	12
 #define GICD_IIDR_REVISION_MASK		(0xf << GICD_IIDR_REVISION_SHIFT)
 #define GICD_IIDR_VARIANT_SHIFT		16
 #define GICD_IIDR_VARIANT_MASK		(0xf << GICD_IIDR_VARIANT_SHIFT)
 #define GICD_IIDR_PRODUCT_ID_SHIFT	24
 #define GICD_IIDR_PRODUCT_ID_MASK	(0xff << GICD_IIDR_PRODUCT_ID_SHIFT)


 #define GICH_HCR			0x0
 #define GICH_VTR			0x4
 #define GICH_VMCR			0x8
 #define GICH_MISR			0x10
 #define GICH_EISR0 			0x20
 #define GICH_EISR1 			0x24
 #define GICH_ELRSR0 			0x30
 #define GICH_ELRSR1 			0x34
 #define GICH_APR			0xf0
 #define GICH_LR0			0x100

 #define GICH_HCR_EN			(1 << 0)
 #define GICH_HCR_UIE			(1 << 1)
 #define GICH_HCR_NPIE			(1 << 3)

 #define GICH_LR_VIRTUALID		(0x3ff << 0)
 #define GICH_LR_PHYSID_CPUID_SHIFT	(10)
 #define GICH_LR_PHYSID_CPUID		(0x3ff << GICH_LR_PHYSID_CPUID_SHIFT)
 #define GICH_LR_PRIORITY_SHIFT		23
 #define GICH_LR_STATE			(3 << 28)
 #define GICH_LR_PENDING_BIT		(1 << 28)
 #define GICH_LR_ACTIVE_BIT		(1 << 29)
 #define GICH_LR_EOI			(1 << 19)
 #define GICH_LR_GROUP1			(1 << 30)
 #define GICH_LR_HW			(1 << 31)

 #define GICH_VMCR_ENABLE_GRP0_SHIFT	0
 #define GICH_VMCR_ENABLE_GRP0_MASK	(1 << GICH_VMCR_ENABLE_GRP0_SHIFT)
 #define GICH_VMCR_ENABLE_GRP1_SHIFT	1
 #define GICH_VMCR_ENABLE_GRP1_MASK	(1 << GICH_VMCR_ENABLE_GRP1_SHIFT)
 #define GICH_VMCR_ACK_CTL_SHIFT		2
 #define GICH_VMCR_ACK_CTL_MASK		(1 << GICH_VMCR_ACK_CTL_SHIFT)
 #define GICH_VMCR_FIQ_EN_SHIFT		3
 #define GICH_VMCR_FIQ_EN_MASK		(1 << GICH_VMCR_FIQ_EN_SHIFT)
 #define GICH_VMCR_CBPR_SHIFT		4
 #define GICH_VMCR_CBPR_MASK		(1 << GICH_VMCR_CBPR_SHIFT)
 #define GICH_VMCR_EOI_MODE_SHIFT	9
 #define GICH_VMCR_EOI_MODE_MASK		(1 << GICH_VMCR_EOI_MODE_SHIFT)

 #define GICH_VMCR_PRIMASK_SHIFT		27
 #define GICH_VMCR_PRIMASK_MASK		(0x1f << GICH_VMCR_PRIMASK_SHIFT)
 #define GICH_VMCR_BINPOINT_SHIFT	21
 #define GICH_VMCR_BINPOINT_MASK		(0x7 << GICH_VMCR_BINPOINT_SHIFT)
 #define GICH_VMCR_ALIAS_BINPOINT_SHIFT	18
 #define GICH_VMCR_ALIAS_BINPOINT_MASK	(0x7 << GICH_VMCR_ALIAS_BINPOINT_SHIFT)

 #define GICH_MISR_EOI			(1 << 0)
 #define GICH_MISR_U			(1 << 1)

 #define GICV_PMR_PRIORITY_SHIFT		3
 #define GICV_PMR_PRIORITY_MASK		(0x1f << GICV_PMR_PRIORITY_SHIFT)

 #ifndef __ASSEMBLY__

 #include <linux/irqdomain.h>

 struct device_node;
 struct gic_chip_data;

 void gic_cascade_irq(unsigned int gic_nr, unsigned int irq);
 int gic_cpu_if_down(unsigned int gic_nr);
 void gic_cpu_save(struct gic_chip_data *gic);
 void gic_cpu_restore(struct gic_chip_data *gic);
 void gic_dist_save(struct gic_chip_data *gic);
 void gic_dist_restore(struct gic_chip_data *gic);

 /*
  * Subdrivers that need some preparatory work can initialize their
  * chips and call this to register their GICs.
  */
 int gic_of_init(struct device_node *node, struct device_node *parent);

 /*
  * Initialises and registers a non-root or child GIC chip. Memory for
  * the gic_chip_data structure is dynamically allocated.
  */
 int gic_of_init_child(struct device *dev, struct gic_chip_data **gic, int irq);

 /*
  * Legacy platforms not converted to DT yet must use this to init
  * their GIC
  */
 void gic_init(void __iomem *dist , void __iomem *cpu);

 void gic_send_sgi(unsigned int cpu_id, unsigned int irq);
 int gic_get_cpu_id(unsigned int cpu);
 void gic_migrate_target(unsigned int new_cpu_id);
 unsigned long gic_get_sgir_physaddr(void);

 #endif /* __ASSEMBLY */
 #endif
	/* SPDX-License-Identifier: GPL-2.0-only */
	/*
	* include/linux/irqchip/arm-gic.h
	*
	* Copyright (C) 2002 ARM Limited, All Rights Reserved.
	*/
	#ifndef __LINUX_IRQCHIP_ARM_GIC_H
	#define __LINUX_IRQCHIP_ARM_GIC_H

	#define GIC_CPU_CTRL 0x00
	#define GIC_CPU_PRIMASK 0x04
	#define GIC_CPU_BINPOINT 0x08
	#define GIC_CPU_INTACK 0x0c
	#define GIC_CPU_EOI 0x10
	#define GIC_CPU_RUNNINGPRI 0x14
	#define GIC_CPU_HIGHPRI 0x18
	#define GIC_CPU_ALIAS_BINPOINT 0x1c
	#define GIC_CPU_ACTIVEPRIO 0xd0
	#define GIC_CPU_IDENT 0xfc
	#define GIC_CPU_DEACTIVATE 0x1000

	#define GICC_ENABLE 0x1
	#define GICC_INT_PRI_THRESHOLD 0xf0

	#define GIC_CPU_CTRL_EnableGrp0_SHIFT 0
	#define GIC_CPU_CTRL_EnableGrp0 (1 << GIC_CPU_CTRL_EnableGrp0_SHIFT)
	#define GIC_CPU_CTRL_EnableGrp1_SHIFT 1
	#define GIC_CPU_CTRL_EnableGrp1 (1 << GIC_CPU_CTRL_EnableGrp1_SHIFT)
	#define GIC_CPU_CTRL_AckCtl_SHIFT 2
	#define GIC_CPU_CTRL_AckCtl (1 << GIC_CPU_CTRL_AckCtl_SHIFT)
	#define GIC_CPU_CTRL_FIQEn_SHIFT 3
	#define GIC_CPU_CTRL_FIQEn (1 << GIC_CPU_CTRL_FIQEn_SHIFT)
	#define GIC_CPU_CTRL_CBPR_SHIFT 4
	#define GIC_CPU_CTRL_CBPR (1 << GIC_CPU_CTRL_CBPR_SHIFT)
	#define GIC_CPU_CTRL_EOImodeNS_SHIFT 9
	#define GIC_CPU_CTRL_EOImodeNS (1 << GIC_CPU_CTRL_EOImodeNS_SHIFT)

	#define GICC_IAR_INT_ID_MASK 0x3ff
	#define GICC_INT_SPURIOUS 1023
	#define GICC_DIS_BYPASS_MASK 0x1e0

	#define GIC_DIST_CTRL 0x000
	#define GIC_DIST_CTR 0x004
	#define GIC_DIST_IIDR 0x008
	#define GIC_DIST_IGROUP 0x080
	#define GIC_DIST_ENABLE_SET 0x100
	#define GIC_DIST_ENABLE_CLEAR 0x180
	#define GIC_DIST_PENDING_SET 0x200
	#define GIC_DIST_PENDING_CLEAR 0x280
	#define GIC_DIST_ACTIVE_SET 0x300
	#define GIC_DIST_ACTIVE_CLEAR 0x380
	#define GIC_DIST_PRI 0x400
	#define GIC_DIST_TARGET 0x800
	#define GIC_DIST_CONFIG 0xc00
	#define GIC_DIST_SOFTINT 0xf00
	#define GIC_DIST_SGI_PENDING_CLEAR 0xf10
	#define GIC_DIST_SGI_PENDING_SET 0xf20

	#define GICD_ENABLE 0x1
	#define GICD_DISABLE 0x0
	#define GICD_INT_ACTLOW_LVLTRIG 0x0
	#define GICD_INT_EN_CLR_X32 0xffffffff
	#define GICD_INT_EN_SET_SGI 0x0000ffff
	#define GICD_INT_EN_CLR_PPI 0xffff0000

	#define GICD_IIDR_IMPLEMENTER_SHIFT 0
	#define GICD_IIDR_IMPLEMENTER_MASK (0xfff << GICD_IIDR_IMPLEMENTER_SHIFT)
	#define GICD_IIDR_REVISION_SHIFT 12
	#define GICD_IIDR_REVISION_MASK (0xf << GICD_IIDR_REVISION_SHIFT)
	#define GICD_IIDR_VARIANT_SHIFT 16
	#define GICD_IIDR_VARIANT_MASK (0xf << GICD_IIDR_VARIANT_SHIFT)
	#define GICD_IIDR_PRODUCT_ID_SHIFT 24
	#define GICD_IIDR_PRODUCT_ID_MASK (0xff << GICD_IIDR_PRODUCT_ID_SHIFT)


	#define GICH_HCR 0x0
	#define GICH_VTR 0x4
	#define GICH_VMCR 0x8
	#define GICH_MISR 0x10
	#define GICH_EISR0 0x20
	#define GICH_EISR1 0x24
	#define GICH_ELRSR0 0x30
	#define GICH_ELRSR1 0x34
	#define GICH_APR 0xf0
	#define GICH_LR0 0x100

	#define GICH_HCR_EN (1 << 0)
	#define GICH_HCR_UIE (1 << 1)
	#define GICH_HCR_NPIE (1 << 3)

	#define GICH_LR_VIRTUALID (0x3ff << 0)
	#define GICH_LR_PHYSID_CPUID_SHIFT (10)
	#define GICH_LR_PHYSID_CPUID (0x3ff << GICH_LR_PHYSID_CPUID_SHIFT)
	#define GICH_LR_PRIORITY_SHIFT 23
	#define GICH_LR_STATE (3 << 28)
	#define GICH_LR_PENDING_BIT (1 << 28)
	#define GICH_LR_ACTIVE_BIT (1 << 29)
	#define GICH_LR_EOI (1 << 19)
	#define GICH_LR_GROUP1 (1 << 30)
	#define GICH_LR_HW (1 << 31)

	#define GICH_VMCR_ENABLE_GRP0_SHIFT 0
	#define GICH_VMCR_ENABLE_GRP0_MASK (1 << GICH_VMCR_ENABLE_GRP0_SHIFT)
	#define GICH_VMCR_ENABLE_GRP1_SHIFT 1
	#define GICH_VMCR_ENABLE_GRP1_MASK (1 << GICH_VMCR_ENABLE_GRP1_SHIFT)
	#define GICH_VMCR_ACK_CTL_SHIFT 2
	#define GICH_VMCR_ACK_CTL_MASK (1 << GICH_VMCR_ACK_CTL_SHIFT)
	#define GICH_VMCR_FIQ_EN_SHIFT 3
	#define GICH_VMCR_FIQ_EN_MASK (1 << GICH_VMCR_FIQ_EN_SHIFT)
	#define GICH_VMCR_CBPR_SHIFT 4
	#define GICH_VMCR_CBPR_MASK (1 << GICH_VMCR_CBPR_SHIFT)
	#define GICH_VMCR_EOI_MODE_SHIFT 9
	#define GICH_VMCR_EOI_MODE_MASK (1 << GICH_VMCR_EOI_MODE_SHIFT)

	#define GICH_VMCR_PRIMASK_SHIFT 27
	#define GICH_VMCR_PRIMASK_MASK (0x1f << GICH_VMCR_PRIMASK_SHIFT)
	#define GICH_VMCR_BINPOINT_SHIFT 21
	#define GICH_VMCR_BINPOINT_MASK (0x7 << GICH_VMCR_BINPOINT_SHIFT)
	#define GICH_VMCR_ALIAS_BINPOINT_SHIFT 18
	#define GICH_VMCR_ALIAS_BINPOINT_MASK (0x7 << GICH_VMCR_ALIAS_BINPOINT_SHIFT)

	#define GICH_MISR_EOI (1 << 0)
	#define GICH_MISR_U (1 << 1)

	#define GICV_PMR_PRIORITY_SHIFT 3
	#define GICV_PMR_PRIORITY_MASK (0x1f << GICV_PMR_PRIORITY_SHIFT)

	#ifndef __ASSEMBLY__

	#include <linux/irqdomain.h>

	struct device_node;
	struct gic_chip_data;

	void gic_cascade_irq(unsigned int gic_nr, unsigned int irq);
	int gic_cpu_if_down(unsigned int gic_nr);
	void gic_cpu_save(struct gic_chip_data *gic);
	void gic_cpu_restore(struct gic_chip_data *gic);
	void gic_dist_save(struct gic_chip_data *gic);
	void gic_dist_restore(struct gic_chip_data *gic);

	/*
	* Subdrivers that need some preparatory work can initialize their
	* chips and call this to register their GICs.
	*/
	int gic_of_init(struct device_node node, struct device_node parent);

	/*
	* Initialises and registers a non-root or child GIC chip. Memory for
	* the gic_chip_data structure is dynamically allocated.
	*/
	int gic_of_init_child(struct device dev, struct gic_chip_data *gic, int irq);

	/*
	* Legacy platforms not converted to DT yet must use this to init
	* their GIC
	*/
	void gic_init(void __iomem dist , void __iomem cpu);

	void gic_send_sgi(unsigned int cpu_id, unsigned int irq);
	int gic_get_cpu_id(unsigned int cpu);
	void gic_migrate_target(unsigned int new_cpu_id);
	unsigned long gic_get_sgir_physaddr(void);

	#endif /* __ASSEMBLY */
	#endif