/*
* Copyright (c) 2013-2014, ARM Limited and Contributors. All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are met:
*
* Redistributions of source code must retain the above copyright notice, this
* list of conditions and the following disclaimer.
*
* Redistributions in binary form must reproduce the above copyright notice,
* this list of conditions and the following disclaimer in the documentation
* and/or other materials provided with the distribution.
*
* Neither the name of ARM nor the names of its contributors may be used
* to endorse or promote products derived from this software without specific
* prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE
* LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
* POSSIBILITY OF SUCH DAMAGE.
*/
#ifndef __GIC_H__
#define __GIC_H__
#define MAX_SPIS 480
#define MAX_PPIS 14
#define MAX_SGIS 16
#define GRP0 0
#define GRP1 1
#define GIC_PRI_MASK 0xff
#define GIC_HIGHEST_SEC_PRIORITY 0
#define GIC_LOWEST_SEC_PRIORITY 127
#define GIC_HIGHEST_NS_PRIORITY 128
#define GIC_LOWEST_NS_PRIORITY 254 /* 255 would disable an interrupt */
#define ENABLE_GRP0 (1 << 0)
#define ENABLE_GRP1 (1 << 1)
/* Distributor interface definitions */
#define GICD_CTLR 0x0
#define GICD_TYPER 0x4
#define GICD_IGROUPR 0x80
#define GICD_ISENABLER 0x100
#define GICD_ICENABLER 0x180
#define GICD_ISPENDR 0x200
#define GICD_ICPENDR 0x280
#define GICD_ISACTIVER 0x300
#define GICD_ICACTIVER 0x380
#define GICD_IPRIORITYR 0x400
#define GICD_ITARGETSR 0x800
#define GICD_ICFGR 0xC00
#define GICD_SGIR 0xF00
#define GICD_CPENDSGIR 0xF10
#define GICD_SPENDSGIR 0xF20
#define IGROUPR_SHIFT 5
#define ISENABLER_SHIFT 5
#define ICENABLER_SHIFT ISENABLER_SHIFT
#define ISPENDR_SHIFT 5
#define ICPENDR_SHIFT ISPENDR_SHIFT
#define ISACTIVER_SHIFT 5
#define ICACTIVER_SHIFT ISACTIVER_SHIFT
#define IPRIORITYR_SHIFT 2
#define ITARGETSR_SHIFT 2
#define ICFGR_SHIFT 4
#define CPENDSGIR_SHIFT 2
#define SPENDSGIR_SHIFT CPENDSGIR_SHIFT
/* GICD_TYPER bit definitions */
#define IT_LINES_NO_MASK 0x1f
/* 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_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 (1 << 3)
#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
/* GICv3 Re-distributor interface registers & shifts */
#define GICR_PCPUBASE_SHIFT 0x11
#define GICR_TYPER 0x08
#define GICR_WAKER 0x14
/* GICR_WAKER bit definitions */
#define WAKER_CA (1UL << 2)
#define WAKER_PS (1UL << 1)
/* GICR_TYPER bit definitions */
#define GICR_TYPER_AFF_SHIFT 32
#define GICR_TYPER_AFF_MASK 0xffffffff
#define GICR_TYPER_LAST (1UL << 4)
/* GICv3 ICC_SRE register bit definitions*/
#define ICC_SRE_EN (1UL << 3)
#define ICC_SRE_SRE (1UL << 0)
#ifndef __ASSEMBLY__
#include <gic_v2.h>
#include <gic_v3.h>
/*******************************************************************************
* Function prototypes
******************************************************************************/
extern unsigned int gicd_read_igroupr(unsigned int, unsigned int);
extern unsigned int gicd_read_isenabler(unsigned int, unsigned int);
extern unsigned int gicd_read_icenabler(unsigned int, unsigned int);
extern unsigned int gicd_read_ispendr(unsigned int, unsigned int);
extern unsigned int gicd_read_icpendr(unsigned int, unsigned int);
extern unsigned int gicd_read_isactiver(unsigned int, unsigned int);
extern unsigned int gicd_read_icactiver(unsigned int, unsigned int);
extern unsigned int gicd_read_ipriorityr(unsigned int, unsigned int);
extern unsigned int gicd_read_itargetsr(unsigned int, unsigned int);
extern unsigned int gicd_read_icfgr(unsigned int, unsigned int);
extern unsigned int gicd_read_cpendsgir(unsigned int, unsigned int);
extern unsigned int gicd_read_spendsgir(unsigned int, unsigned int);
extern void gicd_write_igroupr(unsigned int, unsigned int, unsigned int);
extern void gicd_write_isenabler(unsigned int, unsigned int, unsigned int);
extern void gicd_write_icenabler(unsigned int, unsigned int, unsigned int);
extern void gicd_write_ispendr(unsigned int, unsigned int, unsigned int);
extern void gicd_write_icpendr(unsigned int, unsigned int, unsigned int);
extern void gicd_write_isactiver(unsigned int, unsigned int, unsigned int);
extern void gicd_write_icactiver(unsigned int, unsigned int, unsigned int);
extern void gicd_write_ipriorityr(unsigned int, unsigned int, unsigned int);
extern void gicd_write_itargetsr(unsigned int, unsigned int, unsigned int);
extern void gicd_write_icfgr(unsigned int, unsigned int, unsigned int);
extern void gicd_write_cpendsgir(unsigned int, unsigned int, unsigned int);
extern void gicd_write_spendsgir(unsigned int, unsigned int, unsigned int);
extern unsigned int gicd_get_igroupr(unsigned int, unsigned int);
extern void gicd_set_igroupr(unsigned int, unsigned int);
extern void gicd_clr_igroupr(unsigned int, unsigned int);
extern void gicd_set_isenabler(unsigned int, unsigned int);
extern void gicd_set_icenabler(unsigned int, unsigned int);
extern void gicd_set_ispendr(unsigned int, unsigned int);
extern void gicd_set_icpendr(unsigned int, unsigned int);
extern void gicd_set_isactiver(unsigned int, unsigned int);
extern void gicd_set_icactiver(unsigned int, unsigned int);
extern void gicd_set_ipriorityr(unsigned int, unsigned int, unsigned int);
extern void gicd_set_itargetsr(unsigned int, unsigned int, unsigned int);
/* GICv3 functions */
extern unsigned int read_icc_sre_el1(void);
extern unsigned int read_icc_sre_el2(void);
extern unsigned int read_icc_sre_el3(void);
extern void write_icc_sre_el1(unsigned int);
extern void write_icc_sre_el2(unsigned int);
extern void write_icc_sre_el3(unsigned int);
extern void write_icc_pmr_el1(unsigned int);
#endif /*__ASSEMBLY__*/
#endif /* __GIC_H__ */
