forked from Mirrors/opensbi
7487116b41
We remove mcause, scratch and hartid parameters from various functions for ecall handling because we can always get current HART id and current scratch pointer using just one CSR access. Signed-off-by: Anup Patel <anup.patel@wdc.com> Reviewed-by: Atish Patra <atish.patra@wdc.com>
56 lines
1.4 KiB
C
56 lines
1.4 KiB
C
/*
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* SPDX-License-Identifier: BSD-2-Clause
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*
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* Copyright (c) 2019 Western Digital Corporation or its affiliates.
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*
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* Authors:
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* Anup Patel <anup.patel@wdc.com>
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*/
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#ifndef __SBI_ECALL_H__
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#define __SBI_ECALL_H__
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#include <sbi/sbi_types.h>
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#include <sbi/sbi_list.h>
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#define SBI_ECALL_VERSION_MAJOR 0
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#define SBI_ECALL_VERSION_MINOR 2
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#define SBI_OPENSBI_IMPID 1
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struct sbi_trap_regs;
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struct sbi_trap_info;
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struct sbi_ecall_extension {
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struct sbi_dlist head;
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unsigned long extid_start;
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unsigned long extid_end;
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int (* probe)(unsigned long extid, unsigned long *out_val);
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int (* handle)(unsigned long extid, unsigned long funcid,
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unsigned long *args, unsigned long *out_val,
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struct sbi_trap_info *out_trap);
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};
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extern struct sbi_ecall_extension ecall_base;
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extern struct sbi_ecall_extension ecall_legacy;
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extern struct sbi_ecall_extension ecall_time;
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extern struct sbi_ecall_extension ecall_rfence;
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extern struct sbi_ecall_extension ecall_ipi;
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extern struct sbi_ecall_extension ecall_vendor;
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extern struct sbi_ecall_extension ecall_hsm;
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u16 sbi_ecall_version_major(void);
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u16 sbi_ecall_version_minor(void);
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struct sbi_ecall_extension *sbi_ecall_find_extension(unsigned long extid);
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int sbi_ecall_register_extension(struct sbi_ecall_extension *ext);
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void sbi_ecall_unregister_extension(struct sbi_ecall_extension *ext);
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int sbi_ecall_handler(struct sbi_trap_regs *regs);
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int sbi_ecall_init(void);
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#endif
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