include/linux/irqchip/riscv-aplic.h

/* SPDX-License-Identifier: GPL-2.0-only */
/*
 * Copyright (C) 2021 Western Digital Corporation or its affiliates.
 * Copyright (C) 2022 Ventana Micro Systems Inc.
 */
#ifndef __LINUX_IRQCHIP_RISCV_APLIC_H
#define __LINUX_IRQCHIP_RISCV_APLIC_H

#include <linux/bitops.h>

#define APLIC_MAX_IDC			BIT(14)
#define APLIC_MAX_SOURCE		1024

#define APLIC_DOMAINCFG			0x0000
#define APLIC_DOMAINCFG_RDONLY		0x80000000
#define APLIC_DOMAINCFG_IE		BIT(8)
#define APLIC_DOMAINCFG_DM		BIT(2)
#define APLIC_DOMAINCFG_BE		BIT(0)

#define APLIC_SOURCECFG_BASE		0x0004
#define APLIC_SOURCECFG_D		BIT(10)
#define APLIC_SOURCECFG_CHILDIDX_MASK	0x000003ff
#define APLIC_SOURCECFG_SM_MASK	0x00000007
#define APLIC_SOURCECFG_SM_INACTIVE	0x0
#define APLIC_SOURCECFG_SM_DETACH	0x1
#define APLIC_SOURCECFG_SM_EDGE_RISE	0x4
#define APLIC_SOURCECFG_SM_EDGE_FALL	0x5
#define APLIC_SOURCECFG_SM_LEVEL_HIGH	0x6
#define APLIC_SOURCECFG_SM_LEVEL_LOW	0x7

#define APLIC_MMSICFGADDR		0x1bc0
#define APLIC_MMSICFGADDRH		0x1bc4
#define APLIC_SMSICFGADDR		0x1bc8
#define APLIC_SMSICFGADDRH		0x1bcc

#ifdef CONFIG_RISCV_M_MODE
#define APLIC_xMSICFGADDR		APLIC_MMSICFGADDR
#define APLIC_xMSICFGADDRH		APLIC_MMSICFGADDRH
#else
#define APLIC_xMSICFGADDR		APLIC_SMSICFGADDR
#define APLIC_xMSICFGADDRH		APLIC_SMSICFGADDRH
#endif

#define APLIC_xMSICFGADDRH_L		BIT(31)
#define APLIC_xMSICFGADDRH_HHXS_MASK	0x1f
#define APLIC_xMSICFGADDRH_HHXS_SHIFT	24
#define APLIC_xMSICFGADDRH_HHXS		(APLIC_xMSICFGADDRH_HHXS_MASK << \
					 APLIC_xMSICFGADDRH_HHXS_SHIFT)
#define APLIC_xMSICFGADDRH_LHXS_MASK	0x7
#define APLIC_xMSICFGADDRH_LHXS_SHIFT	20
#define APLIC_xMSICFGADDRH_LHXS		(APLIC_xMSICFGADDRH_LHXS_MASK << \
					 APLIC_xMSICFGADDRH_LHXS_SHIFT)
#define APLIC_xMSICFGADDRH_HHXW_MASK	0x7
#define APLIC_xMSICFGADDRH_HHXW_SHIFT	16
#define APLIC_xMSICFGADDRH_HHXW		(APLIC_xMSICFGADDRH_HHXW_MASK << \
					 APLIC_xMSICFGADDRH_HHXW_SHIFT)
#define APLIC_xMSICFGADDRH_LHXW_MASK	0xf
#define APLIC_xMSICFGADDRH_LHXW_SHIFT	12
#define APLIC_xMSICFGADDRH_LHXW		(APLIC_xMSICFGADDRH_LHXW_MASK << \
					 APLIC_xMSICFGADDRH_LHXW_SHIFT)
#define APLIC_xMSICFGADDRH_BAPPN_MASK	0xfff
#define APLIC_xMSICFGADDRH_BAPPN_SHIFT	0
#define APLIC_xMSICFGADDRH_BAPPN	(APLIC_xMSICFGADDRH_BAPPN_MASK << \
					 APLIC_xMSICFGADDRH_BAPPN_SHIFT)

#define APLIC_xMSICFGADDR_PPN_SHIFT	12

#define APLIC_xMSICFGADDR_PPN_HART(__lhxs) \
	(BIT(__lhxs) - 1)

#define APLIC_xMSICFGADDR_PPN_LHX_MASK(__lhxw) \
	(BIT(__lhxw) - 1)
#define APLIC_xMSICFGADDR_PPN_LHX_SHIFT(__lhxs) \
	((__lhxs))
#define APLIC_xMSICFGADDR_PPN_LHX(__lhxw, __lhxs) \
	(APLIC_xMSICFGADDR_PPN_LHX_MASK(__lhxw) << \
	 APLIC_xMSICFGADDR_PPN_LHX_SHIFT(__lhxs))

#define APLIC_xMSICFGADDR_PPN_HHX_MASK(__hhxw) \
	(BIT(__hhxw) - 1)
#define APLIC_xMSICFGADDR_PPN_HHX_SHIFT(__hhxs) \
	((__hhxs) + APLIC_xMSICFGADDR_PPN_SHIFT)
#define APLIC_xMSICFGADDR_PPN_HHX(__hhxw, __hhxs) \
	(APLIC_xMSICFGADDR_PPN_HHX_MASK(__hhxw) << \
	 APLIC_xMSICFGADDR_PPN_HHX_SHIFT(__hhxs))

#define APLIC_IRQBITS_PER_REG		32

#define APLIC_SETIP_BASE		0x1c00
#define APLIC_SETIPNUM			0x1cdc

#define APLIC_CLRIP_BASE		0x1d00
#define APLIC_CLRIPNUM			0x1ddc

#define APLIC_SETIE_BASE		0x1e00
#define APLIC_SETIENUM			0x1edc

#define APLIC_CLRIE_BASE		0x1f00
#define APLIC_CLRIENUM			0x1fdc

#define APLIC_SETIPNUM_LE		0x2000
#define APLIC_SETIPNUM_BE		0x2004

#define APLIC_GENMSI			0x3000

#define APLIC_TARGET_BASE		0x3004
#define APLIC_TARGET_HART_IDX_SHIFT	18
#define APLIC_TARGET_HART_IDX_MASK	0x3fff
#define APLIC_TARGET_HART_IDX		(APLIC_TARGET_HART_IDX_MASK << \
					 APLIC_TARGET_HART_IDX_SHIFT)
#define APLIC_TARGET_GUEST_IDX_SHIFT	12
#define APLIC_TARGET_GUEST_IDX_MASK	0x3f
#define APLIC_TARGET_GUEST_IDX		(APLIC_TARGET_GUEST_IDX_MASK << \
					 APLIC_TARGET_GUEST_IDX_SHIFT)
#define APLIC_TARGET_IPRIO_SHIFT	0
#define APLIC_TARGET_IPRIO_MASK		0xff
#define APLIC_TARGET_IPRIO		(APLIC_TARGET_IPRIO_MASK << \
					 APLIC_TARGET_IPRIO_SHIFT)
#define APLIC_TARGET_EIID_SHIFT		0
#define APLIC_TARGET_EIID_MASK		0x7ff
#define APLIC_TARGET_EIID		(APLIC_TARGET_EIID_MASK << \
					 APLIC_TARGET_EIID_SHIFT)

#define APLIC_IDC_BASE			0x4000
#define APLIC_IDC_SIZE			32

#define APLIC_IDC_IDELIVERY		0x00

#define APLIC_IDC_IFORCE		0x04

#define APLIC_IDC_ITHRESHOLD		0x08

#define APLIC_IDC_TOPI			0x18
#define APLIC_IDC_TOPI_ID_SHIFT		16
#define APLIC_IDC_TOPI_ID_MASK		0x3ff
#define APLIC_IDC_TOPI_ID		(APLIC_IDC_TOPI_ID_MASK << \
					 APLIC_IDC_TOPI_ID_SHIFT)
#define APLIC_IDC_TOPI_PRIO_SHIFT	0
#define APLIC_IDC_TOPI_PRIO_MASK	0xff
#define APLIC_IDC_TOPI_PRIO		(APLIC_IDC_TOPI_PRIO_MASK << \
					 APLIC_IDC_TOPI_PRIO_SHIFT)

#define APLIC_IDC_CLAIMI		0x1c

#endif