include/linux/irqchip/arm-gic-v3.h - kernel/msm-4.9 - Gitiles

 /*
  * Copyright (C) 2013, 2014 ARM Limited, All Rights Reserved.
  * Author: Marc Zyngier <marc.zyngier@arm.com>
  *
  *
  * This program is free software; you can redistribute it and/or modify
  * it under the terms of the GNU General Public License version 2 as
  * published by the Free Software Foundation.
  *
  * This program is distributed in the hope that it will be useful,
  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  * GNU General Public License for more details.
  *
  * You should have received a copy of the GNU General Public License
  * along with this program.  If not, see <http://www.gnu.org/licenses/>.
  */
 #ifndef __LINUX_IRQCHIP_ARM_GIC_V3_H
 #define __LINUX_IRQCHIP_ARM_GIC_V3_H

 #include <asm/sysreg.h>

 /*
  * Distributor registers. We assume we're running non-secure, with ARE
  * being set. Secure-only and non-ARE registers are not described.
  */
 #define GICD_CTLR			0x0000
 #define GICD_TYPER			0x0004
 #define GICD_IIDR			0x0008
 #define GICD_STATUSR			0x0010
 #define GICD_SETSPI_NSR			0x0040
 #define GICD_CLRSPI_NSR			0x0048
 #define GICD_SETSPI_SR			0x0050
 #define GICD_CLRSPI_SR			0x0058
 #define GICD_SEIR			0x0068
 #define GICD_IGROUPR			0x0080
 #define GICD_ISENABLER			0x0100
 #define GICD_ICENABLER			0x0180
 #define GICD_ISPENDR			0x0200
 #define GICD_ICPENDR			0x0280
 #define GICD_ISACTIVER			0x0300
 #define GICD_ICACTIVER			0x0380
 #define GICD_IPRIORITYR			0x0400
 #define GICD_ICFGR			0x0C00
 #define GICD_IGRPMODR			0x0D00
 #define GICD_NSACR			0x0E00
 #define GICD_IROUTER			0x6000
 #define GICD_IDREGS			0xFFD0
 #define GICD_PIDR2			0xFFE8

 /*
  * Those registers are actually from GICv2, but the spec demands that they
  * are implemented as RES0 if ARE is 1 (which we do in KVM's emulated GICv3).
  */
 #define GICD_ITARGETSR			0x0800
 #define GICD_SGIR			0x0F00
 #define GICD_CPENDSGIR			0x0F10
 #define GICD_SPENDSGIR			0x0F20

 #define GICD_CTLR_RWP			(1U << 31)
 #define GICD_CTLR_DS			(1U << 6)
 #define GICD_CTLR_ARE_NS		(1U << 4)
 #define GICD_CTLR_ENABLE_G1A		(1U << 1)
 #define GICD_CTLR_ENABLE_G1		(1U << 0)

 /*
  * In systems with a single security state (what we emulate in KVM)
  * the meaning of the interrupt group enable bits is slightly different
  */
 #define GICD_CTLR_ENABLE_SS_G1		(1U << 1)
 #define GICD_CTLR_ENABLE_SS_G0		(1U << 0)

 #define GICD_TYPER_LPIS			(1U << 17)
 #define GICD_TYPER_MBIS			(1U << 16)

 #define GICD_TYPER_ID_BITS(typer)	((((typer) >> 19) & 0x1f) + 1)
 #define GICD_TYPER_IRQS(typer)		((((typer) & 0x1f) + 1) * 32)
 #define GICD_TYPER_LPIS			(1U << 17)

 #define GICD_IROUTER_SPI_MODE_ONE	(0U << 31)
 #define GICD_IROUTER_SPI_MODE_ANY	(1U << 31)

 #define GIC_PIDR2_ARCH_MASK		0xf0
 #define GIC_PIDR2_ARCH_GICv3		0x30
 #define GIC_PIDR2_ARCH_GICv4		0x40

 #define GIC_V3_DIST_SIZE		0x10000

 /*
  * Re-Distributor registers, offsets from RD_base
  */
 #define GICR_CTLR			GICD_CTLR
 #define GICR_IIDR			0x0004
 #define GICR_TYPER			0x0008
 #define GICR_STATUSR			GICD_STATUSR
 #define GICR_WAKER			0x0014
 #define GICR_SETLPIR			0x0040
 #define GICR_CLRLPIR			0x0048
 #define GICR_SEIR			GICD_SEIR
 #define GICR_PROPBASER			0x0070
 #define GICR_PENDBASER			0x0078
 #define GICR_INVLPIR			0x00A0
 #define GICR_INVALLR			0x00B0
 #define GICR_SYNCR			0x00C0
 #define GICR_MOVLPIR			0x0100
 #define GICR_MOVALLR			0x0110
 #define GICR_ISACTIVER			GICD_ISACTIVER
 #define GICR_ICACTIVER			GICD_ICACTIVER
 #define GICR_IDREGS			GICD_IDREGS
 #define GICR_PIDR2			GICD_PIDR2

 #define GICR_CTLR_ENABLE_LPIS		(1UL << 0)

 #define GICR_TYPER_CPU_NUMBER(r)	(((r) >> 8) & 0xffff)

 #define GICR_WAKER_ProcessorSleep	(1U << 1)
 #define GICR_WAKER_ChildrenAsleep	(1U << 2)

 #define GICR_PROPBASER_NonShareable	(0U << 10)
 #define GICR_PROPBASER_InnerShareable	(1U << 10)
 #define GICR_PROPBASER_OuterShareable	(2U << 10)
 #define GICR_PROPBASER_SHAREABILITY_MASK (3UL << 10)
 #define GICR_PROPBASER_nCnB		(0U << 7)
 #define GICR_PROPBASER_nC		(1U << 7)
 #define GICR_PROPBASER_RaWt		(2U << 7)
 #define GICR_PROPBASER_RaWb		(3U << 7)
 #define GICR_PROPBASER_WaWt		(4U << 7)
 #define GICR_PROPBASER_WaWb		(5U << 7)
 #define GICR_PROPBASER_RaWaWt		(6U << 7)
 #define GICR_PROPBASER_RaWaWb		(7U << 7)
 #define GICR_PROPBASER_CACHEABILITY_MASK (7U << 7)
 #define GICR_PROPBASER_IDBITS_MASK	(0x1f)

 #define GICR_PENDBASER_NonShareable	(0U << 10)
 #define GICR_PENDBASER_InnerShareable	(1U << 10)
 #define GICR_PENDBASER_OuterShareable	(2U << 10)
 #define GICR_PENDBASER_SHAREABILITY_MASK (3UL << 10)
 #define GICR_PENDBASER_nCnB		(0U << 7)
 #define GICR_PENDBASER_nC		(1U << 7)
 #define GICR_PENDBASER_RaWt		(2U << 7)
 #define GICR_PENDBASER_RaWb		(3U << 7)
 #define GICR_PENDBASER_WaWt		(4U << 7)
 #define GICR_PENDBASER_WaWb		(5U << 7)
 #define GICR_PENDBASER_RaWaWt		(6U << 7)
 #define GICR_PENDBASER_RaWaWb		(7U << 7)
 #define GICR_PENDBASER_CACHEABILITY_MASK (7U << 7)

 /*
  * Re-Distributor registers, offsets from SGI_base
  */
 #define GICR_IGROUPR0			GICD_IGROUPR
 #define GICR_ISENABLER0			GICD_ISENABLER
 #define GICR_ICENABLER0			GICD_ICENABLER
 #define GICR_ISPENDR0			GICD_ISPENDR
 #define GICR_ICPENDR0			GICD_ICPENDR
 #define GICR_ISACTIVER0			GICD_ISACTIVER
 #define GICR_ICACTIVER0			GICD_ICACTIVER
 #define GICR_IPRIORITYR0		GICD_IPRIORITYR
 #define GICR_ICFGR0			GICD_ICFGR
 #define GICR_IGRPMODR0			GICD_IGRPMODR
 #define GICR_NSACR			GICD_NSACR

 #define GICR_TYPER_PLPIS		(1U << 0)
 #define GICR_TYPER_VLPIS		(1U << 1)
 #define GICR_TYPER_LAST			(1U << 4)

 #define GIC_V3_REDIST_SIZE		0x20000

 #define LPI_PROP_GROUP1			(1 << 1)
 #define LPI_PROP_ENABLED		(1 << 0)

 /*
  * ITS registers, offsets from ITS_base
  */
 #define GITS_CTLR			0x0000
 #define GITS_IIDR			0x0004
 #define GITS_TYPER			0x0008
 #define GITS_CBASER			0x0080
 #define GITS_CWRITER			0x0088
 #define GITS_CREADR			0x0090
 #define GITS_BASER			0x0100
 #define GITS_PIDR2			GICR_PIDR2

 #define GITS_TRANSLATER			0x10040

 #define GITS_CTLR_ENABLE		(1U << 0)
 #define GITS_CTLR_QUIESCENT		(1U << 31)

 #define GITS_TYPER_DEVBITS_SHIFT	13
 #define GITS_TYPER_DEVBITS(r)		((((r) >> GITS_TYPER_DEVBITS_SHIFT) & 0x1f) + 1)
 #define GITS_TYPER_PTA			(1UL << 19)

 #define GITS_CBASER_VALID		(1UL << 63)
 #define GITS_CBASER_nCnB		(0UL << 59)
 #define GITS_CBASER_nC			(1UL << 59)
 #define GITS_CBASER_RaWt		(2UL << 59)
 #define GITS_CBASER_RaWb		(3UL << 59)
 #define GITS_CBASER_WaWt		(4UL << 59)
 #define GITS_CBASER_WaWb		(5UL << 59)
 #define GITS_CBASER_RaWaWt		(6UL << 59)
 #define GITS_CBASER_RaWaWb		(7UL << 59)
 #define GITS_CBASER_CACHEABILITY_MASK	(7UL << 59)
 #define GITS_CBASER_NonShareable	(0UL << 10)
 #define GITS_CBASER_InnerShareable	(1UL << 10)
 #define GITS_CBASER_OuterShareable	(2UL << 10)
 #define GITS_CBASER_SHAREABILITY_MASK	(3UL << 10)

 #define GITS_BASER_NR_REGS		8

 #define GITS_BASER_VALID		(1UL << 63)
 #define GITS_BASER_nCnB			(0UL << 59)
 #define GITS_BASER_nC			(1UL << 59)
 #define GITS_BASER_RaWt			(2UL << 59)
 #define GITS_BASER_RaWb			(3UL << 59)
 #define GITS_BASER_WaWt			(4UL << 59)
 #define GITS_BASER_WaWb			(5UL << 59)
 #define GITS_BASER_RaWaWt		(6UL << 59)
 #define GITS_BASER_RaWaWb		(7UL << 59)
 #define GITS_BASER_CACHEABILITY_MASK	(7UL << 59)
 #define GITS_BASER_TYPE_SHIFT		(56)
 #define GITS_BASER_TYPE(r)		(((r) >> GITS_BASER_TYPE_SHIFT) & 7)
 #define GITS_BASER_ENTRY_SIZE_SHIFT	(48)
 #define GITS_BASER_ENTRY_SIZE(r)	((((r) >> GITS_BASER_ENTRY_SIZE_SHIFT) & 0xff) + 1)
 #define GITS_BASER_NonShareable		(0UL << 10)
 #define GITS_BASER_InnerShareable	(1UL << 10)
 #define GITS_BASER_OuterShareable	(2UL << 10)
 #define GITS_BASER_SHAREABILITY_SHIFT	(10)
 #define GITS_BASER_SHAREABILITY_MASK	(3UL << GITS_BASER_SHAREABILITY_SHIFT)
 #define GITS_BASER_PAGE_SIZE_SHIFT	(8)
 #define GITS_BASER_PAGE_SIZE_4K		(0UL << GITS_BASER_PAGE_SIZE_SHIFT)
 #define GITS_BASER_PAGE_SIZE_16K	(1UL << GITS_BASER_PAGE_SIZE_SHIFT)
 #define GITS_BASER_PAGE_SIZE_64K	(2UL << GITS_BASER_PAGE_SIZE_SHIFT)
 #define GITS_BASER_PAGE_SIZE_MASK	(3UL << GITS_BASER_PAGE_SIZE_SHIFT)

 #define GITS_BASER_TYPE_NONE		0
 #define GITS_BASER_TYPE_DEVICE		1
 #define GITS_BASER_TYPE_VCPU		2
 #define GITS_BASER_TYPE_CPU		3
 #define GITS_BASER_TYPE_COLLECTION	4
 #define GITS_BASER_TYPE_RESERVED5	5
 #define GITS_BASER_TYPE_RESERVED6	6
 #define GITS_BASER_TYPE_RESERVED7	7

 /*
  * ITS commands
  */
 #define GITS_CMD_MAPD			0x08
 #define GITS_CMD_MAPC			0x09
 #define GITS_CMD_MAPVI			0x0a
 #define GITS_CMD_MOVI			0x01
 #define GITS_CMD_DISCARD		0x0f
 #define GITS_CMD_INV			0x0c
 #define GITS_CMD_MOVALL			0x0e
 #define GITS_CMD_INVALL			0x0d
 #define GITS_CMD_INT			0x03
 #define GITS_CMD_CLEAR			0x04
 #define GITS_CMD_SYNC			0x05

 /*
  * CPU interface registers
  */
 #define ICC_CTLR_EL1_EOImode_drop_dir	(0U << 1)
 #define ICC_CTLR_EL1_EOImode_drop	(1U << 1)
 #define ICC_SRE_EL1_SRE			(1U << 0)

 /*
  * Hypervisor interface registers (SRE only)
  */
 #define ICH_LR_VIRTUAL_ID_MASK		((1UL << 32) - 1)

 #define ICH_LR_EOI			(1UL << 41)
 #define ICH_LR_GROUP			(1UL << 60)
 #define ICH_LR_HW			(1UL << 61)
 #define ICH_LR_STATE			(3UL << 62)
 #define ICH_LR_PENDING_BIT		(1UL << 62)
 #define ICH_LR_ACTIVE_BIT		(1UL << 63)
 #define ICH_LR_PHYS_ID_SHIFT		32
 #define ICH_LR_PHYS_ID_MASK		(0x3ffUL << ICH_LR_PHYS_ID_SHIFT)

 #define ICH_MISR_EOI			(1 << 0)
 #define ICH_MISR_U			(1 << 1)

 #define ICH_HCR_EN			(1 << 0)
 #define ICH_HCR_UIE			(1 << 1)

 #define ICH_VMCR_CTLR_SHIFT		0
 #define ICH_VMCR_CTLR_MASK		(0x21f << ICH_VMCR_CTLR_SHIFT)
 #define ICH_VMCR_BPR1_SHIFT		18
 #define ICH_VMCR_BPR1_MASK		(7 << ICH_VMCR_BPR1_SHIFT)
 #define ICH_VMCR_BPR0_SHIFT		21
 #define ICH_VMCR_BPR0_MASK		(7 << ICH_VMCR_BPR0_SHIFT)
 #define ICH_VMCR_PMR_SHIFT		24
 #define ICH_VMCR_PMR_MASK		(0xffUL << ICH_VMCR_PMR_SHIFT)

 #define ICC_EOIR1_EL1			sys_reg(3, 0, 12, 12, 1)
 #define ICC_DIR_EL1			sys_reg(3, 0, 12, 11, 1)
 #define ICC_IAR1_EL1			sys_reg(3, 0, 12, 12, 0)
 #define ICC_SGI1R_EL1			sys_reg(3, 0, 12, 11, 5)
 #define ICC_PMR_EL1			sys_reg(3, 0, 4, 6, 0)
 #define ICC_CTLR_EL1			sys_reg(3, 0, 12, 12, 4)
 #define ICC_SRE_EL1			sys_reg(3, 0, 12, 12, 5)
 #define ICC_GRPEN1_EL1			sys_reg(3, 0, 12, 12, 7)

 #define ICC_IAR1_EL1_SPURIOUS		0x3ff

 #define ICC_SRE_EL2			sys_reg(3, 4, 12, 9, 5)

 #define ICC_SRE_EL2_SRE			(1 << 0)
 #define ICC_SRE_EL2_ENABLE		(1 << 3)

 #define ICC_SGI1R_TARGET_LIST_SHIFT	0
 #define ICC_SGI1R_TARGET_LIST_MASK	(0xffff << ICC_SGI1R_TARGET_LIST_SHIFT)
 #define ICC_SGI1R_AFFINITY_1_SHIFT	16
 #define ICC_SGI1R_AFFINITY_1_MASK	(0xff << ICC_SGI1R_AFFINITY_1_SHIFT)
 #define ICC_SGI1R_SGI_ID_SHIFT		24
 #define ICC_SGI1R_SGI_ID_MASK		(0xff << ICC_SGI1R_SGI_ID_SHIFT)
 #define ICC_SGI1R_AFFINITY_2_SHIFT	32
 #define ICC_SGI1R_AFFINITY_2_MASK	(0xffULL << ICC_SGI1R_AFFINITY_1_SHIFT)
 #define ICC_SGI1R_IRQ_ROUTING_MODE_BIT	40
 #define ICC_SGI1R_AFFINITY_3_SHIFT	48
 #define ICC_SGI1R_AFFINITY_3_MASK	(0xffULL << ICC_SGI1R_AFFINITY_1_SHIFT)

 /*
  * System register definitions
  */
 #define ICH_VSEIR_EL2			sys_reg(3, 4, 12, 9, 4)
 #define ICH_HCR_EL2			sys_reg(3, 4, 12, 11, 0)
 #define ICH_VTR_EL2			sys_reg(3, 4, 12, 11, 1)
 #define ICH_MISR_EL2			sys_reg(3, 4, 12, 11, 2)
 #define ICH_EISR_EL2			sys_reg(3, 4, 12, 11, 3)
 #define ICH_ELSR_EL2			sys_reg(3, 4, 12, 11, 5)
 #define ICH_VMCR_EL2			sys_reg(3, 4, 12, 11, 7)

 #define __LR0_EL2(x)			sys_reg(3, 4, 12, 12, x)
 #define __LR8_EL2(x)			sys_reg(3, 4, 12, 13, x)

 #define ICH_LR0_EL2			__LR0_EL2(0)
 #define ICH_LR1_EL2			__LR0_EL2(1)
 #define ICH_LR2_EL2			__LR0_EL2(2)
 #define ICH_LR3_EL2			__LR0_EL2(3)
 #define ICH_LR4_EL2			__LR0_EL2(4)
 #define ICH_LR5_EL2			__LR0_EL2(5)
 #define ICH_LR6_EL2			__LR0_EL2(6)
 #define ICH_LR7_EL2			__LR0_EL2(7)
 #define ICH_LR8_EL2			__LR8_EL2(0)
 #define ICH_LR9_EL2			__LR8_EL2(1)
 #define ICH_LR10_EL2			__LR8_EL2(2)
 #define ICH_LR11_EL2			__LR8_EL2(3)
 #define ICH_LR12_EL2			__LR8_EL2(4)
 #define ICH_LR13_EL2			__LR8_EL2(5)
 #define ICH_LR14_EL2			__LR8_EL2(6)
 #define ICH_LR15_EL2			__LR8_EL2(7)

 #define __AP0Rx_EL2(x)			sys_reg(3, 4, 12, 8, x)
 #define ICH_AP0R0_EL2			__AP0Rx_EL2(0)
 #define ICH_AP0R1_EL2			__AP0Rx_EL2(1)
 #define ICH_AP0R2_EL2			__AP0Rx_EL2(2)
 #define ICH_AP0R3_EL2			__AP0Rx_EL2(3)

 #define __AP1Rx_EL2(x)			sys_reg(3, 4, 12, 9, x)
 #define ICH_AP1R0_EL2			__AP1Rx_EL2(0)
 #define ICH_AP1R1_EL2			__AP1Rx_EL2(1)
 #define ICH_AP1R2_EL2			__AP1Rx_EL2(2)
 #define ICH_AP1R3_EL2			__AP1Rx_EL2(3)

 #ifndef __ASSEMBLY__

 #include <linux/stringify.h>
 #include <asm/msi.h>

 /*
  * We need a value to serve as a irq-type for LPIs. Choose one that will
  * hopefully pique the interest of the reviewer.
  */
 #define GIC_IRQ_TYPE_LPI		0xa110c8ed

 struct rdists {
 	struct {
 		void __iomem	*rd_base;
 		struct page	*pend_page;
 		phys_addr_t	phys_base;
 	} __percpu		*rdist;
 	struct page		*prop_page;
 	int			id_bits;
 	u64			flags;
 };

 static inline void gic_write_eoir(u64 irq)
 {
 	asm volatile("msr_s " __stringify(ICC_EOIR1_EL1) ", %0" : : "r" (irq));
 	isb();
 }

 static inline void gic_write_dir(u64 irq)
 {
 	asm volatile("msr_s " __stringify(ICC_DIR_EL1) ", %0" : : "r" (irq));
 	isb();
 }

 struct irq_domain;
 int its_cpu_init(void);
 int its_init(struct device_node *node, struct rdists *rdists,
 	     struct irq_domain *domain);

 #endif

 #endif
	/*
	* Copyright (C) 2013, 2014 ARM Limited, All Rights Reserved.
	* Author: Marc Zyngier <marc.zyngier@arm.com>
	*
	*
	* This program is free software; you can redistribute it and/or modify
	* it under the terms of the GNU General Public License version 2 as
	* published by the Free Software Foundation.
	*
	* This program is distributed in the hope that it will be useful,
	* but WITHOUT ANY WARRANTY; without even the implied warranty of
	* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
	* GNU General Public License for more details.
	*
	* You should have received a copy of the GNU General Public License
	* along with this program. If not, see <http://www.gnu.org/licenses/>.
	*/
	#ifndef __LINUX_IRQCHIP_ARM_GIC_V3_H
	#define __LINUX_IRQCHIP_ARM_GIC_V3_H

	#include <asm/sysreg.h>

	/*
	* Distributor registers. We assume we're running non-secure, with ARE
	* being set. Secure-only and non-ARE registers are not described.
	*/
	#define GICD_CTLR 0x0000
	#define GICD_TYPER 0x0004
	#define GICD_IIDR 0x0008
	#define GICD_STATUSR 0x0010
	#define GICD_SETSPI_NSR 0x0040
	#define GICD_CLRSPI_NSR 0x0048
	#define GICD_SETSPI_SR 0x0050
	#define GICD_CLRSPI_SR 0x0058
	#define GICD_SEIR 0x0068
	#define GICD_IGROUPR 0x0080
	#define GICD_ISENABLER 0x0100
	#define GICD_ICENABLER 0x0180
	#define GICD_ISPENDR 0x0200
	#define GICD_ICPENDR 0x0280
	#define GICD_ISACTIVER 0x0300
	#define GICD_ICACTIVER 0x0380
	#define GICD_IPRIORITYR 0x0400
	#define GICD_ICFGR 0x0C00
	#define GICD_IGRPMODR 0x0D00
	#define GICD_NSACR 0x0E00
	#define GICD_IROUTER 0x6000
	#define GICD_IDREGS 0xFFD0
	#define GICD_PIDR2 0xFFE8

	/*
	* Those registers are actually from GICv2, but the spec demands that they
	* are implemented as RES0 if ARE is 1 (which we do in KVM's emulated GICv3).
	*/
	#define GICD_ITARGETSR 0x0800
	#define GICD_SGIR 0x0F00
	#define GICD_CPENDSGIR 0x0F10
	#define GICD_SPENDSGIR 0x0F20

	#define GICD_CTLR_RWP (1U << 31)
	#define GICD_CTLR_DS (1U << 6)
	#define GICD_CTLR_ARE_NS (1U << 4)
	#define GICD_CTLR_ENABLE_G1A (1U << 1)
	#define GICD_CTLR_ENABLE_G1 (1U << 0)

	/*
	* In systems with a single security state (what we emulate in KVM)
	* the meaning of the interrupt group enable bits is slightly different
	*/
	#define GICD_CTLR_ENABLE_SS_G1 (1U << 1)
	#define GICD_CTLR_ENABLE_SS_G0 (1U << 0)

	#define GICD_TYPER_LPIS (1U << 17)
	#define GICD_TYPER_MBIS (1U << 16)

	#define GICD_TYPER_ID_BITS(typer) ((((typer) >> 19) & 0x1f) + 1)
	#define GICD_TYPER_IRQS(typer) ((((typer) & 0x1f) + 1) * 32)
	#define GICD_TYPER_LPIS (1U << 17)

	#define GICD_IROUTER_SPI_MODE_ONE (0U << 31)
	#define GICD_IROUTER_SPI_MODE_ANY (1U << 31)

	#define GIC_PIDR2_ARCH_MASK 0xf0
	#define GIC_PIDR2_ARCH_GICv3 0x30
	#define GIC_PIDR2_ARCH_GICv4 0x40

	#define GIC_V3_DIST_SIZE 0x10000

	/*
	* Re-Distributor registers, offsets from RD_base
	*/
	#define GICR_CTLR GICD_CTLR
	#define GICR_IIDR 0x0004
	#define GICR_TYPER 0x0008
	#define GICR_STATUSR GICD_STATUSR
	#define GICR_WAKER 0x0014
	#define GICR_SETLPIR 0x0040
	#define GICR_CLRLPIR 0x0048
	#define GICR_SEIR GICD_SEIR
	#define GICR_PROPBASER 0x0070
	#define GICR_PENDBASER 0x0078
	#define GICR_INVLPIR 0x00A0
	#define GICR_INVALLR 0x00B0
	#define GICR_SYNCR 0x00C0
	#define GICR_MOVLPIR 0x0100
	#define GICR_MOVALLR 0x0110
	#define GICR_ISACTIVER GICD_ISACTIVER
	#define GICR_ICACTIVER GICD_ICACTIVER
	#define GICR_IDREGS GICD_IDREGS
	#define GICR_PIDR2 GICD_PIDR2

	#define GICR_CTLR_ENABLE_LPIS (1UL << 0)

	#define GICR_TYPER_CPU_NUMBER(r) (((r) >> 8) & 0xffff)

	#define GICR_WAKER_ProcessorSleep (1U << 1)
	#define GICR_WAKER_ChildrenAsleep (1U << 2)

	#define GICR_PROPBASER_NonShareable (0U << 10)
	#define GICR_PROPBASER_InnerShareable (1U << 10)
	#define GICR_PROPBASER_OuterShareable (2U << 10)
	#define GICR_PROPBASER_SHAREABILITY_MASK (3UL << 10)
	#define GICR_PROPBASER_nCnB (0U << 7)
	#define GICR_PROPBASER_nC (1U << 7)
	#define GICR_PROPBASER_RaWt (2U << 7)
	#define GICR_PROPBASER_RaWb (3U << 7)
	#define GICR_PROPBASER_WaWt (4U << 7)
	#define GICR_PROPBASER_WaWb (5U << 7)
	#define GICR_PROPBASER_RaWaWt (6U << 7)
	#define GICR_PROPBASER_RaWaWb (7U << 7)
	#define GICR_PROPBASER_CACHEABILITY_MASK (7U << 7)
	#define GICR_PROPBASER_IDBITS_MASK (0x1f)

	#define GICR_PENDBASER_NonShareable (0U << 10)
	#define GICR_PENDBASER_InnerShareable (1U << 10)
	#define GICR_PENDBASER_OuterShareable (2U << 10)
	#define GICR_PENDBASER_SHAREABILITY_MASK (3UL << 10)
	#define GICR_PENDBASER_nCnB (0U << 7)
	#define GICR_PENDBASER_nC (1U << 7)
	#define GICR_PENDBASER_RaWt (2U << 7)
	#define GICR_PENDBASER_RaWb (3U << 7)
	#define GICR_PENDBASER_WaWt (4U << 7)
	#define GICR_PENDBASER_WaWb (5U << 7)
	#define GICR_PENDBASER_RaWaWt (6U << 7)
	#define GICR_PENDBASER_RaWaWb (7U << 7)
	#define GICR_PENDBASER_CACHEABILITY_MASK (7U << 7)

	/*
	* Re-Distributor registers, offsets from SGI_base
	*/
	#define GICR_IGROUPR0 GICD_IGROUPR
	#define GICR_ISENABLER0 GICD_ISENABLER
	#define GICR_ICENABLER0 GICD_ICENABLER
	#define GICR_ISPENDR0 GICD_ISPENDR
	#define GICR_ICPENDR0 GICD_ICPENDR
	#define GICR_ISACTIVER0 GICD_ISACTIVER
	#define GICR_ICACTIVER0 GICD_ICACTIVER
	#define GICR_IPRIORITYR0 GICD_IPRIORITYR
	#define GICR_ICFGR0 GICD_ICFGR
	#define GICR_IGRPMODR0 GICD_IGRPMODR
	#define GICR_NSACR GICD_NSACR

	#define GICR_TYPER_PLPIS (1U << 0)
	#define GICR_TYPER_VLPIS (1U << 1)
	#define GICR_TYPER_LAST (1U << 4)

	#define GIC_V3_REDIST_SIZE 0x20000

	#define LPI_PROP_GROUP1 (1 << 1)
	#define LPI_PROP_ENABLED (1 << 0)

	/*
	* ITS registers, offsets from ITS_base
	*/
	#define GITS_CTLR 0x0000
	#define GITS_IIDR 0x0004
	#define GITS_TYPER 0x0008
	#define GITS_CBASER 0x0080
	#define GITS_CWRITER 0x0088
	#define GITS_CREADR 0x0090
	#define GITS_BASER 0x0100
	#define GITS_PIDR2 GICR_PIDR2

	#define GITS_TRANSLATER 0x10040

	#define GITS_CTLR_ENABLE (1U << 0)
	#define GITS_CTLR_QUIESCENT (1U << 31)

	#define GITS_TYPER_DEVBITS_SHIFT 13
	#define GITS_TYPER_DEVBITS(r) ((((r) >> GITS_TYPER_DEVBITS_SHIFT) & 0x1f) + 1)
	#define GITS_TYPER_PTA (1UL << 19)

	#define GITS_CBASER_VALID (1UL << 63)
	#define GITS_CBASER_nCnB (0UL << 59)
	#define GITS_CBASER_nC (1UL << 59)
	#define GITS_CBASER_RaWt (2UL << 59)
	#define GITS_CBASER_RaWb (3UL << 59)
	#define GITS_CBASER_WaWt (4UL << 59)
	#define GITS_CBASER_WaWb (5UL << 59)
	#define GITS_CBASER_RaWaWt (6UL << 59)
	#define GITS_CBASER_RaWaWb (7UL << 59)
	#define GITS_CBASER_CACHEABILITY_MASK (7UL << 59)
	#define GITS_CBASER_NonShareable (0UL << 10)
	#define GITS_CBASER_InnerShareable (1UL << 10)
	#define GITS_CBASER_OuterShareable (2UL << 10)
	#define GITS_CBASER_SHAREABILITY_MASK (3UL << 10)

	#define GITS_BASER_NR_REGS 8

	#define GITS_BASER_VALID (1UL << 63)
	#define GITS_BASER_nCnB (0UL << 59)
	#define GITS_BASER_nC (1UL << 59)
	#define GITS_BASER_RaWt (2UL << 59)
	#define GITS_BASER_RaWb (3UL << 59)
	#define GITS_BASER_WaWt (4UL << 59)
	#define GITS_BASER_WaWb (5UL << 59)
	#define GITS_BASER_RaWaWt (6UL << 59)
	#define GITS_BASER_RaWaWb (7UL << 59)
	#define GITS_BASER_CACHEABILITY_MASK (7UL << 59)
	#define GITS_BASER_TYPE_SHIFT (56)
	#define GITS_BASER_TYPE(r) (((r) >> GITS_BASER_TYPE_SHIFT) & 7)
	#define GITS_BASER_ENTRY_SIZE_SHIFT (48)
	#define GITS_BASER_ENTRY_SIZE(r) ((((r) >> GITS_BASER_ENTRY_SIZE_SHIFT) & 0xff) + 1)
	#define GITS_BASER_NonShareable (0UL << 10)
	#define GITS_BASER_InnerShareable (1UL << 10)
	#define GITS_BASER_OuterShareable (2UL << 10)
	#define GITS_BASER_SHAREABILITY_SHIFT (10)
	#define GITS_BASER_SHAREABILITY_MASK (3UL << GITS_BASER_SHAREABILITY_SHIFT)
	#define GITS_BASER_PAGE_SIZE_SHIFT (8)
	#define GITS_BASER_PAGE_SIZE_4K (0UL << GITS_BASER_PAGE_SIZE_SHIFT)
	#define GITS_BASER_PAGE_SIZE_16K (1UL << GITS_BASER_PAGE_SIZE_SHIFT)
	#define GITS_BASER_PAGE_SIZE_64K (2UL << GITS_BASER_PAGE_SIZE_SHIFT)
	#define GITS_BASER_PAGE_SIZE_MASK (3UL << GITS_BASER_PAGE_SIZE_SHIFT)

	#define GITS_BASER_TYPE_NONE 0
	#define GITS_BASER_TYPE_DEVICE 1
	#define GITS_BASER_TYPE_VCPU 2
	#define GITS_BASER_TYPE_CPU 3
	#define GITS_BASER_TYPE_COLLECTION 4
	#define GITS_BASER_TYPE_RESERVED5 5
	#define GITS_BASER_TYPE_RESERVED6 6
	#define GITS_BASER_TYPE_RESERVED7 7

	/*
	* ITS commands
	*/
	#define GITS_CMD_MAPD 0x08
	#define GITS_CMD_MAPC 0x09
	#define GITS_CMD_MAPVI 0x0a
	#define GITS_CMD_MOVI 0x01
	#define GITS_CMD_DISCARD 0x0f
	#define GITS_CMD_INV 0x0c
	#define GITS_CMD_MOVALL 0x0e
	#define GITS_CMD_INVALL 0x0d
	#define GITS_CMD_INT 0x03
	#define GITS_CMD_CLEAR 0x04
	#define GITS_CMD_SYNC 0x05

	/*
	* CPU interface registers
	*/
	#define ICC_CTLR_EL1_EOImode_drop_dir (0U << 1)
	#define ICC_CTLR_EL1_EOImode_drop (1U << 1)
	#define ICC_SRE_EL1_SRE (1U << 0)

	/*
	* Hypervisor interface registers (SRE only)
	*/
	#define ICH_LR_VIRTUAL_ID_MASK ((1UL << 32) - 1)

	#define ICH_LR_EOI (1UL << 41)
	#define ICH_LR_GROUP (1UL << 60)
	#define ICH_LR_HW (1UL << 61)
	#define ICH_LR_STATE (3UL << 62)
	#define ICH_LR_PENDING_BIT (1UL << 62)
	#define ICH_LR_ACTIVE_BIT (1UL << 63)
	#define ICH_LR_PHYS_ID_SHIFT 32
	#define ICH_LR_PHYS_ID_MASK (0x3ffUL << ICH_LR_PHYS_ID_SHIFT)

	#define ICH_MISR_EOI (1 << 0)
	#define ICH_MISR_U (1 << 1)

	#define ICH_HCR_EN (1 << 0)
	#define ICH_HCR_UIE (1 << 1)

	#define ICH_VMCR_CTLR_SHIFT 0
	#define ICH_VMCR_CTLR_MASK (0x21f << ICH_VMCR_CTLR_SHIFT)
	#define ICH_VMCR_BPR1_SHIFT 18
	#define ICH_VMCR_BPR1_MASK (7 << ICH_VMCR_BPR1_SHIFT)
	#define ICH_VMCR_BPR0_SHIFT 21
	#define ICH_VMCR_BPR0_MASK (7 << ICH_VMCR_BPR0_SHIFT)
	#define ICH_VMCR_PMR_SHIFT 24
	#define ICH_VMCR_PMR_MASK (0xffUL << ICH_VMCR_PMR_SHIFT)

	#define ICC_EOIR1_EL1 sys_reg(3, 0, 12, 12, 1)
	#define ICC_DIR_EL1 sys_reg(3, 0, 12, 11, 1)
	#define ICC_IAR1_EL1 sys_reg(3, 0, 12, 12, 0)
	#define ICC_SGI1R_EL1 sys_reg(3, 0, 12, 11, 5)
	#define ICC_PMR_EL1 sys_reg(3, 0, 4, 6, 0)
	#define ICC_CTLR_EL1 sys_reg(3, 0, 12, 12, 4)
	#define ICC_SRE_EL1 sys_reg(3, 0, 12, 12, 5)
	#define ICC_GRPEN1_EL1 sys_reg(3, 0, 12, 12, 7)

	#define ICC_IAR1_EL1_SPURIOUS 0x3ff

	#define ICC_SRE_EL2 sys_reg(3, 4, 12, 9, 5)

	#define ICC_SRE_EL2_SRE (1 << 0)
	#define ICC_SRE_EL2_ENABLE (1 << 3)

	#define ICC_SGI1R_TARGET_LIST_SHIFT 0
	#define ICC_SGI1R_TARGET_LIST_MASK (0xffff << ICC_SGI1R_TARGET_LIST_SHIFT)
	#define ICC_SGI1R_AFFINITY_1_SHIFT 16
	#define ICC_SGI1R_AFFINITY_1_MASK (0xff << ICC_SGI1R_AFFINITY_1_SHIFT)
	#define ICC_SGI1R_SGI_ID_SHIFT 24
	#define ICC_SGI1R_SGI_ID_MASK (0xff << ICC_SGI1R_SGI_ID_SHIFT)
	#define ICC_SGI1R_AFFINITY_2_SHIFT 32
	#define ICC_SGI1R_AFFINITY_2_MASK (0xffULL << ICC_SGI1R_AFFINITY_1_SHIFT)
	#define ICC_SGI1R_IRQ_ROUTING_MODE_BIT 40
	#define ICC_SGI1R_AFFINITY_3_SHIFT 48
	#define ICC_SGI1R_AFFINITY_3_MASK (0xffULL << ICC_SGI1R_AFFINITY_1_SHIFT)

	/*
	* System register definitions
	*/
	#define ICH_VSEIR_EL2 sys_reg(3, 4, 12, 9, 4)
	#define ICH_HCR_EL2 sys_reg(3, 4, 12, 11, 0)
	#define ICH_VTR_EL2 sys_reg(3, 4, 12, 11, 1)
	#define ICH_MISR_EL2 sys_reg(3, 4, 12, 11, 2)
	#define ICH_EISR_EL2 sys_reg(3, 4, 12, 11, 3)
	#define ICH_ELSR_EL2 sys_reg(3, 4, 12, 11, 5)
	#define ICH_VMCR_EL2 sys_reg(3, 4, 12, 11, 7)

	#define __LR0_EL2(x) sys_reg(3, 4, 12, 12, x)
	#define __LR8_EL2(x) sys_reg(3, 4, 12, 13, x)

	#define ICH_LR0_EL2 __LR0_EL2(0)
	#define ICH_LR1_EL2 __LR0_EL2(1)
	#define ICH_LR2_EL2 __LR0_EL2(2)
	#define ICH_LR3_EL2 __LR0_EL2(3)
	#define ICH_LR4_EL2 __LR0_EL2(4)
	#define ICH_LR5_EL2 __LR0_EL2(5)
	#define ICH_LR6_EL2 __LR0_EL2(6)
	#define ICH_LR7_EL2 __LR0_EL2(7)
	#define ICH_LR8_EL2 __LR8_EL2(0)
	#define ICH_LR9_EL2 __LR8_EL2(1)
	#define ICH_LR10_EL2 __LR8_EL2(2)
	#define ICH_LR11_EL2 __LR8_EL2(3)
	#define ICH_LR12_EL2 __LR8_EL2(4)
	#define ICH_LR13_EL2 __LR8_EL2(5)
	#define ICH_LR14_EL2 __LR8_EL2(6)
	#define ICH_LR15_EL2 __LR8_EL2(7)

	#define __AP0Rx_EL2(x) sys_reg(3, 4, 12, 8, x)
	#define ICH_AP0R0_EL2 __AP0Rx_EL2(0)
	#define ICH_AP0R1_EL2 __AP0Rx_EL2(1)
	#define ICH_AP0R2_EL2 __AP0Rx_EL2(2)
	#define ICH_AP0R3_EL2 __AP0Rx_EL2(3)

	#define __AP1Rx_EL2(x) sys_reg(3, 4, 12, 9, x)
	#define ICH_AP1R0_EL2 __AP1Rx_EL2(0)
	#define ICH_AP1R1_EL2 __AP1Rx_EL2(1)
	#define ICH_AP1R2_EL2 __AP1Rx_EL2(2)
	#define ICH_AP1R3_EL2 __AP1Rx_EL2(3)

	#ifndef __ASSEMBLY__

	#include <linux/stringify.h>
	#include <asm/msi.h>

	/*
	* We need a value to serve as a irq-type for LPIs. Choose one that will
	* hopefully pique the interest of the reviewer.
	*/
	#define GIC_IRQ_TYPE_LPI 0xa110c8ed

	struct rdists {
	struct {
	void __iomem *rd_base;
	struct page *pend_page;
	phys_addr_t phys_base;
	} __percpu *rdist;
	struct page *prop_page;
	int id_bits;
	u64 flags;
	};

	static inline void gic_write_eoir(u64 irq)
	{
	asm volatile("msr_s " __stringify(ICC_EOIR1_EL1) ", %0" : : "r" (irq));
	isb();
	}

	static inline void gic_write_dir(u64 irq)
	{
	asm volatile("msr_s " __stringify(ICC_DIR_EL1) ", %0" : : "r" (irq));
	isb();
	}

	struct irq_domain;
	int its_cpu_init(void);
	int its_init(struct device_node node, struct rdists rdists,
	struct irq_domain *domain);

	#endif

	#endif