3d8f5129e4
- when fault, untag from address before passing to uvm/pmap functions - pmap_extract() checks more strictly and consider the address tag
145 lines
5.6 KiB
C
145 lines
5.6 KiB
C
/* $NetBSD: pte.h,v 1.12 2020/02/29 21:34:37 ryo Exp $ */
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/*-
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* Copyright (c) 2014 The NetBSD Foundation, Inc.
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* All rights reserved.
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*
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* This code is derived from software contributed to The NetBSD Foundation
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* by Matt Thomas of 3am Software Foundry.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
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* ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
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* TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
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* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
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* BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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* POSSIBILITY OF SUCH DAMAGE.
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*/
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#ifndef _AARCH64_PTE_H_
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#define _AARCH64_PTE_H_
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#ifdef __aarch64__
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#ifndef _LOCORE
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typedef uint64_t pd_entry_t; /* L0(512G) / L1(1G) / L2(2M) table entry */
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#ifndef __BSD_PTENTRY_T__
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#define __BSD_PTENTRY_T__
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typedef uint64_t pt_entry_t; /* L3(4k) table entry */
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#define PRIxPTE PRIx64
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#endif /* __BSD_PTENTRY_T__ */
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#endif /* _LOCORE */
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/*
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* translation table, block, and page descriptors
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*/
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#define LX_TBL_NSTABLE __BIT(63) /* inherited next level */
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#define LX_TBL_APTABLE __BITS(62,61) /* inherited next level */
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#define LX_TBL_APTABLE_NOEFFECT __SHIFTIN(0,LX_TBL_APTABLE)
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#define LX_TBL_APTABLE_EL0_NOACCESS __SHIFTIN(1,LX_TBL_APTABLE)
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#define LX_TBL_APTABLE_RO __SHIFTIN(2,LX_TBL_APTABLE)
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#define LX_TBL_APTABLE_RO_EL0_NOREAD __SHIFTIN(3,LX_TBL_APTABLE)
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#define LX_TBL_UXNTABLE __BIT(60) /* inherited next level */
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#define LX_TBL_PXNTABLE __BIT(59) /* inherited next level */
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#define LX_BLKPAG_OS __BITS(58, 55)
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#define LX_BLKPAG_OS_0 __SHIFTIN(1,LX_BLKPAG_OS)
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#define LX_BLKPAG_OS_1 __SHIFTIN(2,LX_BLKPAG_OS)
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#define LX_BLKPAG_OS_2 __SHIFTIN(4,LX_BLKPAG_OS)
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#define LX_BLKPAG_OS_3 __SHIFTIN(8,LX_BLKPAG_OS)
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#define LX_BLKPAG_UXN __BIT(54) /* Unprivileged Execute Never */
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#define LX_BLKPAG_PXN __BIT(53) /* Privileged Execute Never */
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#define LX_BLKPAG_CONTIG __BIT(52) /* Hint of TLB cache */
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#define LX_BLKPAG_DBM __BIT(51) /* Dirty Bit Modifier (V8.1) */
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#define LX_BLKPAG_GP __BIT(50) /* Guarded Page (V8.5) */
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#define LX_TBL_PA __BITS(47, 12)
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#define LX_BLKPAG_OA __BITS(47, 12)
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#define LX_BLKPAG_NG __BIT(11) /* Not Global */
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#define LX_BLKPAG_AF __BIT(10) /* Access Flag */
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#define LX_BLKPAG_SH __BITS(9,8) /* Shareability */
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#define LX_BLKPAG_SH_NS __SHIFTIN(0,LX_BLKPAG_SH) /* Non Shareable */
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#define LX_BLKPAG_SH_OS __SHIFTIN(2,LX_BLKPAG_SH) /* Outer Shareable */
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#define LX_BLKPAG_SH_IS __SHIFTIN(3,LX_BLKPAG_SH) /* Inner Shareable */
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#define LX_BLKPAG_AP __BIT(7)
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#define LX_BLKPAG_AP_RW __SHIFTIN(0,LX_BLKPAG_AP) /* RW */
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#define LX_BLKPAG_AP_RO __SHIFTIN(1,LX_BLKPAG_AP) /* RO */
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#define LX_BLKPAG_APUSER __BIT(6)
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#define LX_BLKPAG_NS __BIT(5)
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#define LX_BLKPAG_ATTR_INDX __BITS(4,2) /* refer MAIR_EL1 attr<n> */
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#define LX_BLKPAG_ATTR_INDX_0 __SHIFTIN(0,LX_BLKPAG_ATTR_INDX)
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#define LX_BLKPAG_ATTR_INDX_1 __SHIFTIN(1,LX_BLKPAG_ATTR_INDX)
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#define LX_BLKPAG_ATTR_INDX_2 __SHIFTIN(2,LX_BLKPAG_ATTR_INDX)
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#define LX_BLKPAG_ATTR_INDX_3 __SHIFTIN(3,LX_BLKPAG_ATTR_INDX)
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#define LX_TYPE __BIT(1)
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#define LX_TYPE_BLK __SHIFTIN(0, LX_TYPE)
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#define LX_TYPE_TBL __SHIFTIN(1, LX_TYPE)
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#define L3_TYPE_PAG __SHIFTIN(1, LX_TYPE)
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#define LX_VALID __BIT(0)
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#define L1_BLK_OA __BITS(47, 30) /* 1GB */
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#define L2_BLK_OA __BITS(47, 21) /* 2MB */
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#define L3_PAG_OA __BITS(47, 12) /* 4KB */
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/* L0 table, 512GB/entry * 512 */
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#define L0_SHIFT 39
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#define L0_ADDR_BITS __BITS(47,39)
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#define L0_SIZE (1UL << L0_SHIFT)
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#define L0_OFFSET (L0_SIZE - 1UL)
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#define L0_FRAME (~L0_OFFSET)
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/* L0_BLOCK Level 0 doesn't support block translation */
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#define L0_TABLE (LX_TYPE_TBL | LX_VALID)
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/* L1 table, 1GB/entry * 512 */
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#define L1_SHIFT 30
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#define L1_ADDR_BITS __BITS(38,30)
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#define L1_SIZE (1UL << L1_SHIFT)
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#define L1_OFFSET (L1_SIZE - 1UL)
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#define L1_FRAME (~L1_OFFSET)
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#define L1_BLOCK (LX_BLKPAG_NG | LX_TYPE_BLK | LX_VALID)
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#define L1_TABLE (LX_TYPE_TBL | LX_VALID)
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/* L2 table, 2MB/entry * 512 */
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#define L2_SHIFT 21
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#define L2_ADDR_BITS __BITS(29,21)
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#define L2_SIZE (1UL << L2_SHIFT)
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#define L2_OFFSET (L2_SIZE - 1UL)
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#define L2_FRAME (~L2_OFFSET)
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#define L2_BLOCK (LX_BLKPAG_NG | LX_TYPE_BLK | LX_VALID)
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#define L2_TABLE (LX_TYPE_TBL | LX_VALID)
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#define L2_BLOCK_MASK __BITS(47,21)
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/* L3 table, 4KB/entry * 512 */
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#define L3_SHIFT 12
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#define L3_ADDR_BITS __BITS(20,12)
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#define L3_SIZE (1UL << L3_SHIFT)
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#define L3_OFFSET (L3_SIZE - 1UL)
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#define L3_FRAME (~L3_OFFSET)
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#define L3_PAGE (LX_BLKPAG_NG | L3_TYPE_PAG | LX_VALID)
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#define Ln_ENTRIES_SHIFT 9
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#define Ln_ENTRIES (1 << Ln_ENTRIES_SHIFT)
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#define Ln_TABLE_SIZE (8 << Ln_ENTRIES_SHIFT)
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#elif defined(__arm__)
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#include <arm/pte.h>
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#endif /* __aarch64__/__arm__ */
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#endif /* _AARCH64_PTE_H_ */
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