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pte.h revision 1.1 
      1 /*-
      2  * Copyright (c) 2010 The NetBSD Foundation, Inc.
      3  * All rights reserved.
      4  *
      5  * This code is derived from software contributed to The NetBSD Foundation
      6  * by Matt Thomas of 3am Software Foundry.
      7  *
      8  * Redistribution and use in source and binary forms, with or without
      9  * modification, are permitted provided that the following conditions
     10  * are met:
     11  * 1. Redistributions of source code must retain the above copyright
     12  *    notice, this list of conditions and the following disclaimer.
     13  * 2. Redistributions in binary form must reproduce the above copyright
     14  *    notice, this list of conditions and the following disclaimer in the
     15  *    documentation and/or other materials provided with the distribution.
     16  *
     17  * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
     18  * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
     19  * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
     20  * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
     21  * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
     22  * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
     23  * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
     24  * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
     25  * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
     26  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
     27  * POSSIBILITY OF SUCH DAMAGE.
     28  */
     29 
     30 #ifndef _POWERPC_BOOKE_PTE_H_
     31 #define _POWERPC_BOOKE_PTE_H_
     32 
     33 #ifndef _LOCORE
     34 typedef __uint32_t pt_entry_t;
     35 #endif
     36 
     37 /*
     38  * The PTE format is software and must be translated into the various portions
     39  * X W R are separted by single bits so that they can map to the MAS2 bits
     40  * UX/UW/UR or SX/SW/SR by a mask and a shift.
     41  */
     42 #define	PTE_MAS3_MASK	(MAS3_RPN|MAS3_U2)
     43 #define	PTE_MAS2_MASK	(MAS2_WIMGE)
     44 #define	PTE_RPN_MASK	MAS3_RPN		/* MAS3[RPN] */
     45 #define	PTE_RWX_MASK	(PTE_xX|PTE_xW|PTE_xR)
     46 #define	PTE_WIRED	(MAS3_U0 << 2)		/* page is wired (PTE only) */
     47 #define	PTE_xX		(MAS3_U0 << 1)		/* MAS2[UX] | MAS2[SX] */
     48 #define	PTE_UNSYNCED	MAS3_U0			/* page needs isync */
     49 #define	PTE_xW		MAS3_U1			/* MAS2[UW] | MAS2[SW] */
     50 #define	PTE_UNMODIFIED	MAS3_U2			/* page is unmodified */
     51 #define	PTE_xR		MAS3_U3			/* MAS2[UR] | MAS2[SR] */
     52 #define PTE_RWX_SHIFT	5
     53 #define	PTE_WIMGE_MASK	MAS2_WIMGE
     54 #define	PTE_W		MAS2_W			/* Write-through */
     55 #define	PTE_I		MAS2_I			/* cache-Inhibited */
     56 #define	PTE_M		MAS2_M			/* Memory coherence */
     57 #define	PTE_G		MAS2_G			/* Guarded */
     58 #define	PTE_E		MAS2_E			/* [Little] Endian */
     59 
     60 #endif /* !_POWERPC_BOOKE_PTE_H_ */
     61