arch/sparc/include/asm/tsunami.h

   1 /* SPDX-License-Identifier: GPL-2.0 */
   2 /*
   3  * tsunami.h:  Module specific definitions for Tsunami V8 Sparcs
   4  *
   5  * Copyright (C) 1995 David S. Miller (davem@caip.rutgers.edu)
   6  */
   7
   8 #ifndef _SPARC_TSUNAMI_H
   9 #define _SPARC_TSUNAMI_H
  10
  11 #include <asm/asi.h>
  12
  13 /* The MMU control register on the Tsunami:
  14  *
  15  * -----------------------------------------------------------------------
  16  * | implvers |SW|AV|DV|MV| RSV |PC|ITD|ALC| RSV |PE| RC |IE|DE|RSV|NF|ME|
  17  * -----------------------------------------------------------------------
  18  *  31      24 23 22 21 20 19-18 17  16 14  13-12 11 10-9  8  7 6-2  1  0
  19  *
  20  * SW: Enable Software Table Walks  0=off 1=on
  21  * AV: Address View bit
  22  * DV: Data View bit
  23  * MV: Memory View bit
  24  * PC: Parity Control
  25  * ITD: ITBR disable
  26  * ALC: Alternate Cacheable
  27  * PE: Parity Enable   0=off 1=on
  28  * RC: Refresh Control
  29  * IE: Instruction cache Enable  0=off 1=on
  30  * DE: Data cache Enable  0=off 1=on
  31  * NF: No Fault, same as all other SRMMUs
  32  * ME: MMU Enable, same as all other SRMMUs
  33  */
  34
  35 #define TSUNAMI_SW        0x00800000
  36 #define TSUNAMI_AV        0x00400000
  37 #define TSUNAMI_DV        0x00200000
  38 #define TSUNAMI_MV        0x00100000
  39 #define TSUNAMI_PC        0x00020000
  40 #define TSUNAMI_ITD       0x00010000
  41 #define TSUNAMI_ALC       0x00008000
  42 #define TSUNAMI_PE        0x00001000
  43 #define TSUNAMI_RCMASK    0x00000C00
  44 #define TSUNAMI_IENAB     0x00000200
  45 #define TSUNAMI_DENAB     0x00000100
  46 #define TSUNAMI_NF        0x00000002
  47 #define TSUNAMI_ME        0x00000001
  48
  49 static inline void tsunami_flush_icache(void)
  50 {
  51         __asm__ __volatile__("sta %%g0, [%%g0] %0\n\t"
  52                              : /* no outputs */
  53                              : "i" (ASI_M_IC_FLCLEAR)
  54                              : "memory");
  55 }
  56
  57 static inline void tsunami_flush_dcache(void)
  58 {
  59         __asm__ __volatile__("sta %%g0, [%%g0] %0\n\t"
  60                              : /* no outputs */
  61                              : "i" (ASI_M_DC_FLCLEAR)
  62                              : "memory");
  63 }
  64
  65 #endif /* !(_SPARC_TSUNAMI_H) */