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/*-
* Copyright (c) 2014 Andrew Turner
* Copyright (c) 2014-2015 The FreeBSD Foundation
* All rights reserved.
*
* This software was developed by Andrew Turner under
* sponsorship from the FreeBSD Foundation.
*
* 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.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR 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 AUTHOR 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.
*
* $FreeBSD$
*/
#ifndef _MACHINE_PTE_H_
#define _MACHINE_PTE_H_
#ifndef LOCORE
typedef uint64_t pd_entry_t; /* page directory entry */
typedef uint64_t pt_entry_t; /* page table entry */
#endif
/* Block and Page attributes */
/* TODO: Add the upper attributes */
#define ATTR_MASK_H UINT64_C(0xfff0000000000000)
#define ATTR_MASK_L UINT64_C(0x0000000000000fff)
#define ATTR_MASK (ATTR_MASK_H | ATTR_MASK_L)
/* Bits 58:55 are reserved for software */
#define ATTR_SW_MANAGED (1UL << 56)
#define ATTR_SW_WIRED (1UL << 55)
#define ATTR_nG (1 << 11)
#define ATTR_AF (1 << 10)
#define ATTR_SH(x) ((x) << 8)
#define ATTR_SH_MASK ATTR_SH(3)
#define ATTR_SH_NS 0 /* Non-shareable */
#define ATTR_SH_OS 2 /* Outer-shareable */
#define ATTR_SH_IS 3 /* Inner-shareable */
#define ATTR_AP_RW_BIT (1 << 7)
#define ATTR_AP(x) ((x) << 6)
#define ATTR_AP_MASK ATTR_AP(3)
#define ATTR_AP_RW (0 << 1)
#define ATTR_AP_RO (1 << 1)
#define ATTR_AP_USER (1 << 0)
#define ATTR_NS (1 << 5)
#define ATTR_IDX(x) ((x) << 2)
#define ATTR_IDX_MASK (7 << 2)
#ifdef SMP
#define ATTR_DEFAULT (ATTR_AF | ATTR_SH(ATTR_SH_IS))
#else
#define ATTR_DEFAULT (ATTR_AF)
#endif
#define ATTR_DESCR_MASK 3
/* Level 0 table, 512GiB per entry */
#define L0_SHIFT 39
#define L0_INVAL 0x0 /* An invalid address */
#define L0_BLOCK 0x1 /* A block */
/* 0x2 also marks an invalid address */
#define L0_TABLE 0x3 /* A next-level table */
/* Level 1 table, 1GiB per entry */
#define L1_SHIFT 30
#define L1_SIZE (1 << L1_SHIFT)
#define L1_OFFSET (L1_SIZE - 1)
#define L1_INVAL L0_INVAL
#define L1_BLOCK L0_BLOCK
#define L1_TABLE L0_TABLE
/* Level 2 table, 2MiB per entry */
#define L2_SHIFT 21
#define L2_SIZE (1 << L2_SHIFT)
#define L2_OFFSET (L2_SIZE - 1)
#define L2_INVAL L0_INVAL
#define L2_BLOCK L0_BLOCK
#define L2_TABLE L0_TABLE
#define L2_BLOCK_MASK UINT64_C(0xffffffe00000)
/* Level 3 table, 4KiB per entry */
#define L3_SHIFT 12
#define L3_SIZE (1 << L3_SHIFT)
#define L3_OFFSET (L3_SIZE - 1)
#define L3_SHIFT 12
#define L3_INVAL 0x0
/* 0x1 is reserved */
/* 0x2 also marks an invalid address */
#define L3_PAGE 0x3
#define Ln_ENTRIES (1 << 9)
#define Ln_ADDR_MASK (Ln_ENTRIES - 1)
#define Ln_TABLE_MASK ((1 << 12) - 1)
#endif /* !_MACHINE_PTE_H_ */
/* End of pte.h */
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