forked from Mirrors/opensbi
12394a269b
Currently, we have fixed TLB flush types supported by the remote TLB library. This approach is not flexible and does not allow custom local TLB flush function. For example, after updating PMP entries on a set of HARTs at runtime, we have to flush TLB on these HARTs as well. To support custom local TLB flush function, we replace the "type" field of "struct sbi_tlb_info" with a local TLB flush function pointer. We also provide definitions of standard TLB flush operations (such as fence_i, sfence.vma, hfence.vvma, hfence.gvma, etc). Signed-off-by: Anup Patel <anup.patel@wdc.com> Reviewed-by: Atish Patra <atish.patra@wdc.com>
61 lines
1.5 KiB
C
61 lines
1.5 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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* 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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#include <sbi/sbi_hartmask.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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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 vmid;
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void (*local_fn)(struct sbi_tlb_info *tinfo);
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struct sbi_hartmask smask;
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};
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void sbi_tlb_local_hfence_vvma(struct sbi_tlb_info *tinfo);
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void sbi_tlb_local_hfence_gvma(struct sbi_tlb_info *tinfo);
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void sbi_tlb_local_sfence_vma(struct sbi_tlb_info *tinfo);
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void sbi_tlb_local_hfence_vvma_asid(struct sbi_tlb_info *tinfo);
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void sbi_tlb_local_hfence_gvma_vmid(struct sbi_tlb_info *tinfo);
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void sbi_tlb_local_sfence_vma_asid(struct sbi_tlb_info *tinfo);
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void sbi_tlb_local_fence_i(struct sbi_tlb_info *tinfo);
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#define SBI_TLB_INFO_INIT(__p, __start, __size, __asid, __vmid, __lfn, __src) \
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do { \
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(__p)->start = (__start); \
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(__p)->size = (__size); \
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(__p)->asid = (__asid); \
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(__p)->vmid = (__vmid); \
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(__p)->local_fn = (__lfn); \
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SBI_HARTMASK_INIT_EXCEPT(&(__p)->smask, (__src)); \
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} while (0)
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#define SBI_TLB_INFO_SIZE sizeof(struct sbi_tlb_info)
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int sbi_tlb_request(ulong hmask, ulong hbase, struct sbi_tlb_info *tinfo);
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int sbi_tlb_init(struct sbi_scratch *scratch, bool cold_boot);
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#endif
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