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https://github.com/riscv-software-src/opensbi.git
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a6395acd6c
The unpriv load/store instruction from M-mode can cause page/access fault to M-mode if S-mode page table did not have mappings OR it did not have PMP access permission. To tackle this, we redirect trap back to S-mode if unpriv load/store instruction traps in M-mode. Signed-off-by: Anup Patel <anup.patel@wdc.com> Reviewed-by: Atish Patra <atish.patra@wdc.com>
42 lines
885 B
C
42 lines
885 B
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_IPI_H__
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#define __SBI_IPI_H__
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#include <sbi/riscv_unpriv.h>
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#include <sbi/sbi_types.h>
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/* clang-format off */
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#define SBI_IPI_EVENT_SOFT 0x1
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#define SBI_IPI_EVENT_FENCE_I 0x2
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#define SBI_IPI_EVENT_SFENCE_VMA 0x4
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#define SBI_IPI_EVENT_SFENCE_VMA_ASID 0x8
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#define SBI_IPI_EVENT_HALT 0x10
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/* clang-format on */
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struct sbi_scratch;
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struct sbi_ipi_data {
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unsigned long ipi_type;
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};
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int sbi_ipi_send_many(struct sbi_scratch *scratch, struct unpriv_trap *uptrap,
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ulong *pmask, u32 event, void *data);
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void sbi_ipi_clear_smode(struct sbi_scratch *scratch);
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void sbi_ipi_process(struct sbi_scratch *scratch);
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int sbi_ipi_init(struct sbi_scratch *scratch, bool cold_boot);
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#endif
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