forked from Mirrors/opensbi
98ee15ca3a
Currently, the tlb range flush threshold is fixed and set to 4k for all platforms. However, it should be platform specific as it completely depends upon how platform actually implements sfence instruction. Define a platform feature that allows every individual platform to set different values. If a platform doesn't define it, just use a page size as the threshold. Signed-off-by: Atish Patra <atish.patra@wdc.com> Reviewed-by: Bin Meng <bmeng.cn@gmail.com> Reviewed-by: Anup Patel <anup.patel@wdc.com>
52 lines
1016 B
C
52 lines
1016 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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* Atish Patra <atish.patra@wdc.com>
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* Anup Patel <anup.patel@wdc.com>
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*/
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#ifndef __SBI_TLB_H__
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#define __SBI_TLB_H__
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#include <sbi/sbi_types.h>
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/* clang-format off */
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#define SBI_TLB_FLUSH_ALL ((unsigned long)-1)
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/* clang-format on */
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#define SBI_TLB_FIFO_NUM_ENTRIES 8
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enum sbi_tlb_info_types {
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SBI_TLB_FLUSH_VMA,
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SBI_TLB_FLUSH_VMA_ASID,
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SBI_TLB_FLUSH_VMA_VMID,
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SBI_ITLB_FLUSH
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};
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struct sbi_scratch;
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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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unsigned long type;
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unsigned long shart_mask;
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};
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#define SBI_TLB_INFO_SIZE sizeof(struct sbi_tlb_info)
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int sbi_tlb_fifo_update(struct sbi_scratch *scratch, u32 hartid, void *data);
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void sbi_tlb_fifo_process(struct sbi_scratch *scratch);
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int sbi_tlb_fifo_init(struct sbi_scratch *scratch, bool cold_boot);
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void sbi_tlb_fifo_sync(struct sbi_scratch *scratch);
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#endif
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