diff options
Diffstat (limited to 'arch/sparc/include/asm/tsunami.h')
| -rw-r--r-- | arch/sparc/include/asm/tsunami.h | 65 |
1 files changed, 65 insertions, 0 deletions
diff --git a/arch/sparc/include/asm/tsunami.h b/arch/sparc/include/asm/tsunami.h new file mode 100644 index 0000000000..acaf014eff --- /dev/null +++ b/arch/sparc/include/asm/tsunami.h @@ -0,0 +1,65 @@ +/* SPDX-License-Identifier: GPL-2.0 */ +/* + * tsunami.h: Module specific definitions for Tsunami V8 Sparcs + * + * Copyright (C) 1995 David S. Miller (davem@caip.rutgers.edu) + */ + +#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) */ |