forked from Mirrors/opensbi
90cb4917b5
Currently, OpenSBI doesn't distinguish between sfence.vma and sfence.vm asid calls. Moreover, it ignores the page ranges and just flush entire TLB everytime. Fix the sfence implementation by keeping all the tlb flush info in scratch area. The relevant Linux kernel code was added by https://patchwork.kernel.org/project/linux-riscv/list/?series=89695 However, this patch is backward compatible with older version kernel that doesn't have the above patches as well. Fixes #87 Signed-off-by: Atish Patra <atish.patra@wdc.com>
43 lines
870 B
C
43 lines
870 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/sbi_types.h>
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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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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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struct sbi_tlb_info {
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unsigned long start;
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unsigned long size;
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unsigned long asid;
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};
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int sbi_ipi_send_many(struct sbi_scratch *scratch,
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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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