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/*-
* Copyright (c) 1997 Berkeley Software Design, Inc. 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.
* 3. Berkeley Software Design Inc's name may not be used to endorse or
* promote products derived from this software without specific prior
* written permission.
*
* THIS SOFTWARE IS PROVIDED BY BERKELEY SOFTWARE DESIGN INC ``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 BERKELEY SOFTWARE DESIGN INC 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.
*
* from: BSDI: pmap.v9.h,v 1.10.2.6 1999/08/23 22:18:44 cp Exp
* $FreeBSD$
*/
#ifndef _MACHINE_TTE_H_
#define _MACHINE_TTE_H_
#include <machine/atomic.h>
#define TTE_SHIFT 4
#define STTE_SHIFT 5
#define TT_CTX_SHIFT (48)
#define TT_VA_SHIFT (22)
#define TT_VPN_SHIFT (9)
#define TT_CTX_SIZE (13)
#define TT_VA_SIZE (42)
#define TT_CTX_MASK ((1L << TT_CTX_SIZE) - 1)
#define TT_VA_MASK ((1L << TT_VA_SIZE) - 1)
#define TT_G (1L << 63)
#define TT_CTX(ctx) (((u_long)(ctx) & TT_CTX_MASK) << TT_CTX_SHIFT)
#define TT_VA(va) ((u_long)(va) >> TT_VA_SHIFT)
#define TD_SIZE_SHIFT (61)
#define TD_SOFT2_SHIFT (50)
#define TD_DIAG_SHIFT (41)
#define TD_PA_SHIFT (13)
#define TD_SOFT_SHIFT (7)
#define TD_SIZE_SIZE (2)
#define TD_SOFT2_SIZE (9)
#define TD_DIAG_SIZE (9)
#define TD_PA_SIZE (28)
#define TD_SOFT_SIZE (6)
#define TD_SIZE_MASK (((1L << TD_SIZE_SIZE) - 1) << TD_SIZE_SHIFT)
#define TD_SOFT2_MASK (((1L << TD_SOFT2_SIZE) - 1) << TD_SOFT2_SHIFT)
#define TD_DIAG_MASK (((1L << TD_DIAG_SIZE) - 1) << TD_DIAG_SHIFT)
#define TD_PA_MASK (((1L << TD_PA_SIZE) - 1) << TD_PA_SHIFT)
#define TD_SOFT_MASK (((1L << TD_SOFT_SIZE) - 1) << TD_SOFT_SHIFT)
#define TD_VA_LOW_SHIFT TD_SOFT2_SHIFT
#define TD_VA_LOW_MASK TD_SOFT2_MASK
#define TS_EXEC (1L << 4)
#define TS_INIT (1L << 3)
#define TS_MNG (1L << 2)
#define TS_REF (1L << 1)
#define TS_W (1L << 0)
#define TD_V (1L << 63)
#define TD_8K (0L << TD_SIZE_SHIFT)
#define TD_64K (1L << TD_SIZE_SHIFT)
#define TD_512K (2L << TD_SIZE_SHIFT)
#define TD_4M (3L << TD_SIZE_SHIFT)
#define TD_NFO (1L << 60)
#define TD_IE (1L << 59)
#define TD_VPN_LOW(vpn) ((vpn << TD_SOFT2_SHIFT) & TD_SOFT2_MASK)
#define TD_VA_LOW(va) (TD_VPN_LOW((va) >> PAGE_SHIFT))
#define TD_PA(pa) ((pa) & TD_PA_MASK)
#define TD_EXEC (TS_EXEC << TD_SOFT_SHIFT)
#define TD_INIT (TS_INIT << TD_SOFT_SHIFT)
#define TD_MNG (TS_MNG << TD_SOFT_SHIFT)
#define TD_REF (TS_REF << TD_SOFT_SHIFT)
#define TD_SW (TS_W << TD_SOFT_SHIFT)
#define TD_L (1L << 6)
#define TD_CP (1L << 5)
#define TD_CV (1L << 4)
#define TD_E (1L << 3)
#define TD_P (1L << 2)
#define TD_W (1L << 1)
#define TD_G (1L << 0)
struct tte {
u_long tte_tag;
u_long tte_data;
};
struct stte {
struct tte st_tte;
vm_offset_t st_next;
vm_offset_t st_prev;
};
static __inline u_int
tte_get_ctx(struct tte tte)
{
return ((tte.tte_tag >> TT_CTX_SHIFT) & TT_CTX_MASK);
}
static __inline vm_offset_t
tte_get_vpn(struct tte tte)
{
return (((tte.tte_tag & TT_VA_MASK) << TT_VPN_SHIFT) |
((tte.tte_data & TD_VA_LOW_MASK) >> TD_VA_LOW_SHIFT));
}
static __inline vm_offset_t
tte_get_va(struct tte tte)
{
return (tte_get_vpn(tte) << PAGE_SHIFT);
}
static __inline void
tte_invalidate(struct tte *tp)
{
atomic_clear_long(&tp->tte_data, TD_V);
}
static __inline int
tte_match(struct tte tte, vm_offset_t va)
{
return ((tte.tte_data & TD_V) != 0 &&
((tte.tte_tag ^ TT_VA(va)) & TT_VA_MASK) == 0 &&
((tte.tte_data ^ TD_VA_LOW(va)) & TD_VA_LOW_MASK) == 0);
}
#endif /* !_MACHINE_TTE_H_ */
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