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/* $NetBSD: locore.h,v 1.2 1996/05/20 23:38:26 jonathan Exp $ */
/*
* Copyright 1996 The Board of Trustees of The Leland Stanford
* Junior University. All Rights Reserved.
*
* Permission to use, copy, modify, and distribute this
* software and its documentation for any purpose and without
* fee is hereby granted, provided that the above copyright
* notice appear in all copies. Stanford University
* makes no representations about the suitability of this
* software for any purpose. It is provided "as is" without
* express or implied warranty.
*/
/*
* Jump table for MIPS cpu locore functions that are implemented
* differently on different generations, or instruction-level
* archtecture (ISA) level, the Mips family.
* The following functions must be provided for each mips ISA level:
*
*
* MachConfigCache
* MachFlushCache
* MachFlushDCache
* MachFlushICache
* MachForceCacheUpdate
* MachSetPID
* MachTLBFlush
* MachTLBFlushAddr __P()
* MachTLBUpdate (u_int, (pt_entry_t?) u_int);
* MachTLBWriteIndexed
*
* We currently provide support for:
*
* r2000 and r3000 (mips ISA-I)
* r4000 and r4400 in 32-bit mode (mips ISA-III?)
*/
#ifndef _MIPS_LOCORE_H
#define _MIPS_LOCORE_H
/*
* locore functions used by vm_machdep.c.
* These are not yet CPU-model specific.
*/
struct user;
extern int copykstack __P((struct user *up));
extern void MachSaveCurFPState __P((struct proc *p));
extern int switch_exit __P((void)); /* XXX never really returns? */
/* MIPS-generic locore functions used by trap.c */
extern void MachFPTrap __P((u_int statusReg, u_int CauseReg, u_int pc));
/*
* locore service routine for exeception vectors. Used outside locore
* only to print them by name in stack tracebacks
*/
extern void mips_r2000_KernIntr __P(());
extern void mips_r2000_ConfigCache __P((void));
extern void mips_r2000_FlushCache __P((void));
extern void mips_r2000_FlushDCache __P((vm_offset_t addr, vm_offset_t len));
extern void mips_r2000_FlushICache __P((vm_offset_t addr, vm_offset_t len));
extern void mips_r2000_ForceCacheUpdate __P((void));
extern void mips_r2000_SetPID __P((int pid));
extern void mips_r2000_TLBFlush __P((void));
extern void mips_r2000_TLBFlushAddr __P( /* XXX Really pte highpart ? */
(vm_offset_t addr));
extern void mips_r2000_TLBUpdate __P((u_int, /*pt_entry_t*/ u_int));
extern void mips_r2000_TLBWriteIndexed __P((u_int index, u_int high,
u_int low));
extern void mips_r4000_ConfigCache __P((void));
extern void mips_r4000_FlushCache __P((void));
extern void mips_r4000_FlushDCache __P((vm_offset_t addr, vm_offset_t len));
extern void mips_r4000_FlushICache __P((vm_offset_t addr, vm_offset_t len));
extern void mips_r4000_ForceCacheUpdate __P((void));
extern void mips_r4000_SetPID __P((int pid));
extern void mips_r4000_TLBFlush __P((void));
extern void mips_r4000_TLBFlushAddr __P( /* XXX Really pte highpart ? */
(vm_offset_t addr));
extern void mips_r4000_TLBUpdate __P((u_int, /*pt_entry_t*/ u_int));
extern void mips_r4000_TLBWriteIndexed __P((u_int index, u_int high,
u_int low));
/*
* A vector with an entry for each mips-ISA-level dependent
* locore function, and macros which jump through it.
* XXX the macro names are chosen to be compatible with the old
* Sprite coding-convention names used in 4.4bsd/pmax.
*/
typedef struct {
void (*configCache) __P((void));
void (*flushCache) __P((void));
void (*flushDCache) __P((vm_offset_t addr, vm_offset_t len));
void (*flushICache) __P((vm_offset_t addr, vm_offset_t len));
void (*forceCacheUpdate) __P((void));
void (*setTLBpid) __P((int pid));
void (*tlbFlush) __P((void));
void (*tlbFlushAddr) __P((vm_offset_t)); /* XXX Really pte highpart ? */
void (*tlbUpdate) __P((u_int highreg, u_int lowreg));
void (*tlbWriteIndexed) __P((u_int, u_int, u_int));
} mips_locore_jumpvec_t;
/*
* The "active" locore-fuction vector, and
*/
extern mips_locore_jumpvec_t mips_locore_jumpvec;
extern mips_locore_jumpvec_t r2000_locore_vec;
extern mips_locore_jumpvec_t r4000_locore_vec;
#define MachConfigCache (*(mips_locore_jumpvec.configCache))
#define MachFlushCache (*(mips_locore_jumpvec.flushCache))
#define MachFlushDCache (*(mips_locore_jumpvec.flushDCache))
#define MachFlushICache (*(mips_locore_jumpvec.flushICache))
#define MachForceCacheUpdate (*(mips_locore_jumpvec.forceCacheUpdate))
#define MachSetPID (*(mips_locore_jumpvec.setTLBpid))
#define MachTLBFlush (*(mips_locore_jumpvec.tlbFlush))
#define MachTLBFlushAddr (*(mips_locore_jumpvec.tlbFlushAddr))
#define MachTLBUpdate (*(mips_locore_jumpvec.tlbUpdate))
#define MachTLBWriteIndexed (*(mips_locore_jumpvec.tlbWriteIndexed))
#endif /* _MIPS_LOCORE_H */
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