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/* SPDX-License-Identifier: GPL-2.0-only */
/*
* Copyright (C) 2012 Regents of the University of California
* Copyright (C) 2017 SiFive
*/
#ifndef _ASM_RISCV_IRQ_H
#define _ASM_RISCV_IRQ_H
#include <linux/interrupt.h>
#include <linux/linkage.h>
#include <asm-generic/irq.h>
#define INVALID_CONTEXT UINT_MAX
void riscv_set_intc_hwnode_fn(struct fwnode_handle *(*fn)(void));
struct fwnode_handle *riscv_get_intc_hwnode(void);
#ifdef CONFIG_ACPI
enum riscv_irqchip_type {
ACPI_RISCV_IRQCHIP_INTC = 0x00,
ACPI_RISCV_IRQCHIP_IMSIC = 0x01,
ACPI_RISCV_IRQCHIP_PLIC = 0x02,
ACPI_RISCV_IRQCHIP_APLIC = 0x03,
};
int riscv_acpi_get_gsi_info(struct fwnode_handle *fwnode, u32 *gsi_base,
u32 *id, u32 *nr_irqs, u32 *nr_idcs);
struct fwnode_handle *riscv_acpi_get_gsi_domain_id(u32 gsi);
unsigned long acpi_rintc_index_to_hartid(u32 index);
unsigned long acpi_rintc_ext_parent_to_hartid(unsigned int plic_id, unsigned int ctxt_idx);
unsigned int acpi_rintc_get_plic_nr_contexts(unsigned int plic_id);
unsigned int acpi_rintc_get_plic_context(unsigned int plic_id, unsigned int ctxt_idx);
int __init acpi_rintc_get_imsic_mmio_info(u32 index, struct resource *res);
#else
static inline int riscv_acpi_get_gsi_info(struct fwnode_handle *fwnode, u32 *gsi_base,
u32 *id, u32 *nr_irqs, u32 *nr_idcs)
{
return 0;
}
static inline unsigned long acpi_rintc_index_to_hartid(u32 index)
{
return INVALID_HARTID;
}
static inline unsigned long acpi_rintc_ext_parent_to_hartid(unsigned int plic_id,
unsigned int ctxt_idx)
{
return INVALID_HARTID;
}
static inline unsigned int acpi_rintc_get_plic_nr_contexts(unsigned int plic_id)
{
return INVALID_CONTEXT;
}
static inline unsigned int acpi_rintc_get_plic_context(unsigned int plic_id, unsigned int ctxt_idx)
{
return INVALID_CONTEXT;
}
static inline int __init acpi_rintc_get_imsic_mmio_info(u32 index, struct resource *res)
{
return 0;
}
#endif /* CONFIG_ACPI */
#endif /* _ASM_RISCV_IRQ_H */
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