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/*
* SPDX-License-Identifier: BSD-2-Clause
*
* Copyright (c) 2019 Western Digital Corporation or its affiliates.
*
* Authors:
* Anup Patel <anup.patel@wdc.com>
*/
#ifndef __SBI_ECALL_H__
#define __SBI_ECALL_H__
#include <sbi/sbi_types.h>
#include <sbi/sbi_list.h>
struct sbi_trap_regs;
struct sbi_trap_info;
struct sbi_scratch;
struct sbi_ecall_extension {
struct sbi_dlist head;
unsigned long extid_start;
unsigned long extid_end;
int (* probe)(struct sbi_scratch *scratch,
unsigned long extid, unsigned long *out_val);
int (* handle)(struct sbi_scratch *scratch,
unsigned long extid, unsigned long funcid,
unsigned long *args, unsigned long *out_val,
struct sbi_trap_info *out_trap);
};
extern struct sbi_ecall_extension ecall_legacy;
extern struct sbi_ecall_extension ecall_time;
extern struct sbi_ecall_extension ecall_rfence;
extern struct sbi_ecall_extension ecall_ipi;
extern struct sbi_ecall_extension ecall_vendor;
u16 sbi_ecall_version_major(void);
u16 sbi_ecall_version_minor(void);
struct sbi_ecall_extension *sbi_ecall_find_extension(unsigned long extid);
int sbi_ecall_register_extension(struct sbi_ecall_extension *ext);
void sbi_ecall_unregister_extension(struct sbi_ecall_extension *ext);
int sbi_ecall_handler(u32 hartid, ulong mcause, struct sbi_trap_regs *regs,
struct sbi_scratch *scratch);
int sbi_ecall_init(void);
#endif
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