66 lines
1.8 KiB
C
66 lines
1.8 KiB
C
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/* SPDX-License-Identifier: GPL-2.0 */
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/*
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* tsunami.h: Module specific definitions for Tsunami V8 Sparcs
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*
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* Copyright (C) 1995 David S. Miller (davem@caip.rutgers.edu)
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*/
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#ifndef _SPARC_TSUNAMI_H
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#define _SPARC_TSUNAMI_H
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#include <asm/asi.h>
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/* The MMU control register on the Tsunami:
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*
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* -----------------------------------------------------------------------
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* | implvers |SW|AV|DV|MV| RSV |PC|ITD|ALC| RSV |PE| RC |IE|DE|RSV|NF|ME|
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* -----------------------------------------------------------------------
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* 31 24 23 22 21 20 19-18 17 16 14 13-12 11 10-9 8 7 6-2 1 0
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*
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* SW: Enable Software Table Walks 0=off 1=on
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* AV: Address View bit
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* DV: Data View bit
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* MV: Memory View bit
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* PC: Parity Control
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* ITD: ITBR disable
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* ALC: Alternate Cacheable
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* PE: Parity Enable 0=off 1=on
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* RC: Refresh Control
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* IE: Instruction cache Enable 0=off 1=on
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* DE: Data cache Enable 0=off 1=on
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* NF: No Fault, same as all other SRMMUs
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* ME: MMU Enable, same as all other SRMMUs
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*/
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#define TSUNAMI_SW 0x00800000
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#define TSUNAMI_AV 0x00400000
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#define TSUNAMI_DV 0x00200000
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#define TSUNAMI_MV 0x00100000
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#define TSUNAMI_PC 0x00020000
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#define TSUNAMI_ITD 0x00010000
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#define TSUNAMI_ALC 0x00008000
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#define TSUNAMI_PE 0x00001000
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#define TSUNAMI_RCMASK 0x00000C00
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#define TSUNAMI_IENAB 0x00000200
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#define TSUNAMI_DENAB 0x00000100
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#define TSUNAMI_NF 0x00000002
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#define TSUNAMI_ME 0x00000001
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static inline void tsunami_flush_icache(void)
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{
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__asm__ __volatile__("sta %%g0, [%%g0] %0\n\t"
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: /* no outputs */
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: "i" (ASI_M_IC_FLCLEAR)
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: "memory");
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}
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static inline void tsunami_flush_dcache(void)
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{
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__asm__ __volatile__("sta %%g0, [%%g0] %0\n\t"
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: /* no outputs */
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: "i" (ASI_M_DC_FLCLEAR)
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: "memory");
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}
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#endif /* !(_SPARC_TSUNAMI_H) */
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