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>
52 lines
1.2 KiB
C
52 lines
1.2 KiB
C
/*
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* SPDX-License-Identifier: BSD-2-Clause
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*
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* Copyright (c) 2020 Western Digital Corporation or its affiliates.
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*
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* Authors:
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* Atish Patra <atish.patra@wdc.com>
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*/
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#include <sbi/sbi_ecall.h>
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#include <sbi/sbi_ecall_interface.h>
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#include <sbi/sbi_error.h>
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#include <sbi/sbi_version.h>
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#include <sbi/sbi_hsm.h>
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#include <sbi/sbi_scratch.h>
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#include <sbi/riscv_asm.h>
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static int sbi_ecall_hsm_handler(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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int ret = 0, hstate;
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struct sbi_scratch *scratch = sbi_scratch_thishart_ptr();
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switch (funcid) {
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case SBI_EXT_HSM_HART_START:
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ret = sbi_hsm_hart_start(scratch, args[0], args[1], args[2]);
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break;
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case SBI_EXT_HSM_HART_STOP:
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ret = sbi_hsm_hart_stop(scratch, TRUE);
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break;
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case SBI_EXT_HSM_HART_GET_STATUS:
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hstate = sbi_hsm_hart_get_state(args[0]);
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ret = sbi_hsm_hart_state_to_status(hstate);
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break;
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default:
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ret = SBI_ENOTSUPP;
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};
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if (ret >= 0) {
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*out_val = ret;
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ret = 0;
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}
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return ret;
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}
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struct sbi_ecall_extension ecall_hsm = {
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.extid_start = SBI_EXT_HSM,
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.extid_end = SBI_EXT_HSM,
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.handle = sbi_ecall_hsm_handler,
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};
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