text: /*-
   * Copyright (c) 1999 The NetBSD Foundation, Inc.
   * All rights reserved.
   *
   * This code is derived from software contributed to The NetBSD Foundation
   * by Jason R. Thorpe.
   *
   * Redistribution and use in source and binary forms, with or without
   * modification, are permitted provided that the following conditions
   * are met:
   * 1. Redistributions of source code must retain the above copyright
   *    notice, this list of conditions and the following disclaimer.
   * 2. Redistributions in binary form must reproduce the above copyright
   *    notice, this list of conditions and the following disclaimer in the
   *    documentation and/or other materials provided with the distribution.
   * 3. All advertising materials mentioning features or use of this software
   *    must display the following acknowledgement:
   *	This product includes software developed by the NetBSD
   *	Foundation, Inc. and its contributors.
   * 4. Neither the name of The NetBSD Foundation nor the names of its
   *    contributors may be used to endorse or promote products derived
   *    from this software without specific prior written permission.
   *
   * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
   * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
   * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
   * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
   * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
   * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
   * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
   * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
   * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
   * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
   * POSSIBILITY OF SUCH DAMAGE.
   */
  
  /*
   * Copyright (C) 1995, 1996 Wolfgang Solfrank.
   * Copyright (C) 1995, 1996 TooLs GmbH.
   * All rights reserved.
   *
   * Redistribution and use in source and binary forms, with or without
   * modification, are permitted provided that the following conditions
   * are met:
   * 1. Redistributions of source code must retain the above copyright
   *    notice, this list of conditions and the following disclaimer.
   * 2. Redistributions in binary form must reproduce the above copyright
   *    notice, this list of conditions and the following disclaimer in the
   *    documentation and/or other materials provided with the distribution.
   * 3. All advertising materials mentioning features or use of this software
   *    must display the following acknowledgement:
   *	This product includes software developed by TooLs GmbH.
   * 4. The name of TooLs GmbH may not be used to endorse or promote products
   *    derived from this software without specific prior written permission.
   *
   * THIS SOFTWARE IS PROVIDED BY TOOLS GMBH ``AS IS'' AND ANY EXPRESS OR
   * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
   * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
   * IN NO EVENT SHALL TOOLS GMBH BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
   * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
   * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
   * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
   * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
   * OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
   * ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
   *
   *	$NetBSD: bat.h,v 1.2 1999/12/18 01:36:06 thorpej Exp $
   * $FreeBSD: src/sys/powerpc/include/bat.h,v 1.1 2001/06/10 02:39:28 benno Exp $
   */
  
  #ifndef	_MACHINE_BAT_H_
  #define	_MACHINE_BAT_H_
  
  struct bat {
  	u_int32_t batu;
  	u_int32_t batl;
  };
  
  /* Lower BAT bits (all but PowerPC 601): */
  #define	BAT_PBS		0xfffe0000	/* physical block start */
  #define	BAT_W		0x00000040	/* 1 = write-through, 0 = write-back */
  #define	BAT_I		0x00000020	/* cache inhibit */
  #define	BAT_M		0x00000010	/* memory coherency enable */
  #define	BAT_G		0x00000008	/* guarded region */
  
  #define	BAT_PP_NONE	0x00000000	/* no access permission */
  #define	BAT_PP_RO_S	0x00000001	/* read-only (soft) */
  #define	BAT_PP_RW	0x00000002	/* read/write */
  #define	BAT_PP_RO	0x00000003	/* read-only */
  
  /* Upper BAT bits (all but PowerPC 601): */
  #define	BAT_EBS		0xfffe0000	/* effective block start */
  #define	BAT_BL		0x00001ffc	/* block length */
  #define	BAT_Vs		0x00000002	/* valid in supervisor mode */
  #define	BAT_Vu		0x00000001	/* valid in user mode */
  
  #define	BAT_V		(BAT_Vs|BAT_Vu)
  
  /* Block Length encoding (all but PowerPC 601): */
  #define	BAT_BL_128K	0x00000000
  #define	BAT_BL_256K	0x00000004
  #define	BAT_BL_512K	0x0000000c
  #define	BAT_BL_1M	0x0000001c
  #define	BAT_BL_2M	0x0000003c
  #define	BAT_BL_4M	0x0000007c
  #define	BAT_BL_8M	0x000000fc
  #define	BAT_BL_16M	0x000001fc
  #define	BAT_BL_32M	0x000003fc
  #define	BAT_BL_64M	0x000007fc
  #define	BAT_BL_128M	0x00000ffc
  #define	BAT_BL_256M	0x00001ffc
  
  #define	BATU(va, len, v)						\
  	(((va) & BAT_EBS) | ((len) & BAT_BL) | ((v) & BAT_V))
  
  #define	BATL(pa, wimg, pp)						\
  	(((pa) & BAT_PBS) | (wimg) | (pp))
  
  
  /* Lower BAT bits (PowerPC 601): */
  #define	BAT601_PBN	0xfffe0000	/* physical block number */
  #define	BAT601_V	0x00000040	/* valid */
  #define	BAT601_BSM	0x0000003f	/* block size mask */
  
  /* Upper BAT bits (PowerPC 601): */
  #define	BAT601_BLPI	0xfffe0000	/* block logical page index */
  #define	BAT601_W	0x00000040	/* 1 = write-through, 0 = write-back */
  #define	BAT601_I	0x00000020	/* cache inhibit */
  #define	BAT601_M	0x00000010	/* memory coherency enable */
  #define	BAT601_Ks	0x00000008	/* key-supervisor */
  #define	BAT601_Ku	0x00000004	/* key-user */
  
  /*
   * Permission bits on the PowerPC 601 are modified by the appropriate
   * Key bit:
   *
   *	Key	PP	Access
   *	0	NONE	read/write
   *	0	RO_S	read/write
   *	0	RW	read/write
   *	0	RO	read-only
   *
   *	1	NONE	none
   *	1	RO_S	read-only
   *	1	RW	read/write
   *	1	RO	read-only
   */
  #define	BAT601_PP_NONE	0x00000000	/* no access permission */
  #define	BAT601_PP_RO_S	0x00000001	/* read-only (soft) */
  #define	BAT601_PP_RW	0x00000002	/* read/write */
  #define	BAT601_PP_RO	0x00000003	/* read-only */
  
  /* Block Size Mask encoding (PowerPC 601): */
  #define	BAT601_BSM_128K	0x00000000
  #define	BAT601_BSM_256K	0x00000001
  #define	BAT601_BSM_512K	0x00000003
  #define	BAT601_BSM_1M	0x00000007
  #define	BAT601_BSM_2M	0x0000000f
  #define	BAT601_BSM_4M	0x0000001f
  #define	BAT601_BSM_8M	0x0000003f
  
  #define	BATU601(va, wim, key, pp)					\
  	(((va) & BAT601_BLPI) | (wim) | (key) | (pp))
  
  #define	BATL601(pa, size, v)						\
  	(((pa) & BAT601_PBN) | (v) | (size))
  
  #ifdef _KERNEL
  extern struct bat battable[16];
  #endif
  
  #endif	/* _MACHINE_BAT_H_ */
  