/*      $OpenBSD: m88100.h,v 1.9 2014/05/31 11:19:06 miod Exp $ */
/*
 * Mach Operating System
 * Copyright (c) 1993-1992 Carnegie Mellon University
 * All Rights Reserved.
 *
 * Permission to use, copy, modify and distribute this software and its
 * documentation is hereby granted, provided that both the copyright
 * notice and this permission notice appear in all copies of the
 * software, derivative works or modified versions, and any portions
 * thereof, and that both notices appear in supporting documentation.
 *
 * CARNEGIE MELLON ALLOWS FREE USE OF THIS SOFTWARE IN ITS "AS IS"
 * CONDITION.  CARNEGIE MELLON DISCLAIMS ANY LIABILITY OF ANY KIND FOR
 * ANY DAMAGES WHATSOEVER RESULTING FROM THE USE OF THIS SOFTWARE.
 *
 * Carnegie Mellon requests users of this software to return to
 *
 *  Software Distribution Coordinator  or  Software.Distribution@CS.CMU.EDU
 *  School of Computer Science
 *  Carnegie Mellon University
 *  Pittsburgh PA 15213-3890
 *
 * any improvements or extensions that they make and grant Carnegie Mellon
 * the rights to redistribute these changes.
 */

#ifndef _M88K_M88100_H_
#define _M88K_M88100_H_

/*
 *      88100 RISC definitions
 */

/*
 * DMT0, DMT1, DMT2 layout
 */
#define DMT_BO          0x00008000      /* Byte-Ordering */
#define DMT_DAS         0x00004000      /* Data Access Space */
#define DMT_DOUB1       0x00002000      /* Double Word */
#define DMT_LOCKBAR     0x00001000      /* Bud Lock */
#define DMT_DREG        0x00000F80      /* Destination Registers 5bits */
#define DMT_SIGNED      0x00000040      /* Sign-Extended Bit */
#define DMT_EN          0x0000003C      /* Byte Enable Bit */
#define DMT_WRITE       0x00000002      /* Read/Write Transaction Bit */
#define DMT_VALID       0x00000001      /* Valid Transaction Bit */

#define DMT_DREGSHIFT   7
#define DMT_ENSHIFT     2

#define DMT_DREGBITS(x) (((x) & DMT_DREG) >> DMT_DREGSHIFT)
#define DMT_ENBITS(x)   (((x) & DMT_EN) >> DMT_ENSHIFT)

#if defined(_KERNEL) && !defined(_LOCORE)

void    dae_print(u_int *);
void    data_access_emulation(u_int *);

u_int32_t do_load_word(vaddr_t, int);
u_int32_t do_load_half(vaddr_t, int);
u_int32_t do_load_byte(vaddr_t, int);
void      do_store_word(vaddr_t, u_int32_t, int);
void      do_store_half(vaddr_t, u_int16_t, int);
void      do_store_byte(vaddr_t, u_int8_t, int);
u_int32_t do_xmem_word(vaddr_t, u_int32_t, int);
u_int8_t  do_xmem_byte(vaddr_t, u_int8_t, int);

void    m88100_apply_patches(void);
void    m88100_smp_setup(struct cpu_info *);

/* rewind one instruction */
static __inline__ void
m88100_rewind_insn(struct reg *regs)
{
        regs->sfip = regs->snip;
        regs->snip = regs->sxip;
}

#endif

#endif /* _M88K_M88100_H_ */