f206c90cda
MMU will ignore the attribute there, howeverit simplifies to code to alwas set it. Obtained from: ABT Systems Ltd Sponsored by: The FreeBSD Foundation
116 lines
3.7 KiB
C
116 lines
3.7 KiB
C
/*-
|
|
* 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 */
|