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