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b61a40afca
Current cache probe and flush methods have some drawbacks: 1, Assume there are 3 cache levels and only 3 levels; 2, Assume L1 = I + D, L2 = V, L3 = S, V is exclusive, S is inclusive. However, the fact is I + D, I + D + V, I + D + S and I + D + V + S are all valid. So, refactor the cache probe and flush methods to adapt more types of cache hierarchy. Signed-off-by: Huacai Chen <chenhuacai@loongson.cn>
43 lines
1.5 KiB
C
43 lines
1.5 KiB
C
/* SPDX-License-Identifier: GPL-2.0 */
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/*
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* Cache operations for the cache instruction.
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*
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* Copyright (C) 2020-2022 Loongson Technology Corporation Limited
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*/
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#ifndef __ASM_CACHEOPS_H
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#define __ASM_CACHEOPS_H
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/*
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* Most cache ops are split into a 3 bit field identifying the cache, and a 2
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* bit field identifying the cache operation.
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*/
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#define CacheOp_Cache 0x07
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#define CacheOp_Op 0x18
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#define Cache_LEAF0 0x00
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#define Cache_LEAF1 0x01
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#define Cache_LEAF2 0x02
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#define Cache_LEAF3 0x03
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#define Cache_LEAF4 0x04
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#define Cache_LEAF5 0x05
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#define Index_Invalidate 0x08
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#define Index_Writeback_Inv 0x08
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#define Hit_Invalidate 0x10
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#define Hit_Writeback_Inv 0x10
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#define CacheOp_User_Defined 0x18
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#define Index_Writeback_Inv_LEAF0 (Cache_LEAF0 | Index_Writeback_Inv)
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#define Index_Writeback_Inv_LEAF1 (Cache_LEAF1 | Index_Writeback_Inv)
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#define Index_Writeback_Inv_LEAF2 (Cache_LEAF2 | Index_Writeback_Inv)
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#define Index_Writeback_Inv_LEAF3 (Cache_LEAF3 | Index_Writeback_Inv)
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#define Index_Writeback_Inv_LEAF4 (Cache_LEAF4 | Index_Writeback_Inv)
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#define Index_Writeback_Inv_LEAF5 (Cache_LEAF5 | Index_Writeback_Inv)
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#define Hit_Writeback_Inv_LEAF0 (Cache_LEAF0 | Hit_Writeback_Inv)
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#define Hit_Writeback_Inv_LEAF1 (Cache_LEAF1 | Hit_Writeback_Inv)
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#define Hit_Writeback_Inv_LEAF2 (Cache_LEAF2 | Hit_Writeback_Inv)
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#define Hit_Writeback_Inv_LEAF3 (Cache_LEAF3 | Hit_Writeback_Inv)
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#define Hit_Writeback_Inv_LEAF4 (Cache_LEAF4 | Hit_Writeback_Inv)
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#define Hit_Writeback_Inv_LEAF5 (Cache_LEAF5 | Hit_Writeback_Inv)
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#endif /* __ASM_CACHEOPS_H */
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