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freebsd-nq/sys/ia64/include/pte.h

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Factor out PTE and related definitions from pmap.h - they are useful in the loader.
2001-09-24 19:27:38 +00:00
/*-
* Copyright (c) 2001 Doug Rabson
* 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.
*
* 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_
Redefine a PTE as a 64-bit integral type instead of a struct of bit-fields. Unify the PTE defines accordingly and update all uses.
2004-09-23 00:05:20 +00:00
#define PTE_PRESENT 0x0000000000000001
#define PTE__RV1_ 0x0000000000000002
#define PTE_MA_MASK 0x000000000000001C
#define PTE_MA_WB 0x0000000000000000
#define PTE_MA_UC 0x0000000000000010
#define PTE_MA_UCE 0x0000000000000014
#define PTE_MA_WC 0x0000000000000018
#define PTE_MA_NATPAGE 0x000000000000001C
#define PTE_ACCESSED 0x0000000000000020
#define PTE_DIRTY 0x0000000000000040
#define PTE_PL_MASK 0x0000000000000180
#define PTE_PL_KERN 0x0000000000000000
#define PTE_PL_USER 0x0000000000000180
#define PTE_AR_MASK 0x0000000000000E00
#define PTE_AR_R 0x0000000000000000
#define PTE_AR_RX 0x0000000000000200
#define PTE_AR_RW 0x0000000000000400
#define PTE_AR_RWX 0x0000000000000600
#define PTE_AR_R_RW 0x0000000000000800
#define PTE_AR_RX_RWX 0x0000000000000A00
#define PTE_AR_RWX_RW 0x0000000000000C00
#define PTE_AR_X_RX 0x0000000000000E00
#define PTE_PPN_MASK 0x0003FFFFFFFFF000
#define PTE__RV2_ 0x000C000000000000
#define PTE_ED 0x0010000000000000
#define PTE_IG_MASK 0xFFE0000000000000
#define PTE_WIRED 0x0020000000000000
#define PTE_MANAGED 0x0040000000000000
#define PTE_PROT_MASK 0x0700000000000000
Remove struct ia64_itir and use a plain old uint64_t instead.
2004-11-21 21:40:08 +00:00
#define ITIR__RV1_ 0x0000000000000003
#define ITIR_PS_MASK 0x00000000000000FC
#define ITIR_KEY_MASK 0x00000000FFFFFF00
#define ITIR__RV2_ 0xFFFFFFFF00000000
Redefine a PTE as a 64-bit integral type instead of a struct of bit-fields. Unify the PTE defines accordingly and update all uses.
2004-09-23 00:05:20 +00:00
#ifndef LOCORE
typedef uint64_t pt_entry_t;
static __inline pt_entry_t
pte_atomic_clear(pt_entry_t *ptep, uint64_t val)
{
return (atomic_clear_64(ptep, val));
}
static __inline pt_entry_t
pte_atomic_set(pt_entry_t *ptep, uint64_t val)
{
return (atomic_set_64(ptep, val));
}
Factor out PTE and related definitions from pmap.h - they are useful in the loader.
2001-09-24 19:27:38 +00:00
/*
* A long-format VHPT entry.
*/
struct ia64_lpte {
Redefine a PTE as a 64-bit integral type instead of a struct of bit-fields. Unify the PTE defines accordingly and update all uses.
2004-09-23 00:05:20 +00:00
pt_entry_t pte;
Remove struct ia64_itir and use a plain old uint64_t instead.
2004-11-21 21:40:08 +00:00
uint64_t itir;
Redefine a PTE as a 64-bit integral type instead of a struct of bit-fields. Unify the PTE defines accordingly and update all uses.
2004-09-23 00:05:20 +00:00
uint64_t tag; /* includes ti */
uint64_t chain; /* pa of collision chain */
Factor out PTE and related definitions from pmap.h - they are useful in the loader.
2001-09-24 19:27:38 +00:00
};
/*
* Layout of rr[x].
*/
struct ia64_rr {
Better preserve the original protection for the mappings we maintain. The hardware always gives read access for privilege level 0, which means that we cannot use the hardware access rights and privilege level in the PTE to test whether there's a change in protection. So, we save the original vm_prot_t in the PTE as well. Add pmap_pte_prot() to set the proper access rights and privilege level on the PTE given a pmap and the requested protection. The above allows us to compare the protection in pmap_extract_and_hold() which was missing. While in pmap_extract_and_hold(), add pmap locking. While here, clean up most (i.e. all but one) PTE macros we inherited from alpha. They were either unused, used inconsistently, badly named or simply weren't beneficial. We save the wired and managed state of the PTE in distinct (bit) fields. While in pte.h, s/u_int64_t/uint64_t/g pmap locking obtained from: alc@ feedback & review by: alc@
2004-08-09 20:44:41 +00:00
uint64_t rr_ve :1; /* bit 0 */
uint64_t __rv1__ :1; /* bit 1 */
uint64_t rr_ps :6; /* bits 2..7 */
uint64_t rr_rid :24; /* bits 8..31 */
uint64_t __rv2__ :32; /* bits 32..63 */
Factor out PTE and related definitions from pmap.h - they are useful in the loader.
2001-09-24 19:27:38 +00:00
};
#endif /* !LOCORE */
#endif /* !_MACHINE_PTE_H_ */
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