145 lines
4.4 KiB
C
145 lines
4.4 KiB
C
/*-
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* Copyright (c) 1997 Berkeley Software Design, Inc. All rights reserved.
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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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* 3. Berkeley Software Design Inc's name may not be used to endorse or
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* promote products derived from this software without specific prior
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* written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY BERKELEY SOFTWARE DESIGN INC ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL BERKELEY SOFTWARE DESIGN INC BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*
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* from: BSDI: pmap.v9.h,v 1.10.2.6 1999/08/23 22:18:44 cp Exp
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* $FreeBSD$
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*/
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#ifndef _MACHINE_TTE_H_
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#define _MACHINE_TTE_H_
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#include <machine/atomic.h>
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#define TTE_SHIFT 4
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#define STTE_SHIFT 5
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#define TT_CTX_SHIFT (48)
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#define TT_VA_SHIFT (22)
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#define TT_VPN_SHIFT (9)
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#define TT_CTX_SIZE (13)
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#define TT_VA_SIZE (42)
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#define TT_CTX_MASK ((1L << TT_CTX_SIZE) - 1)
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#define TT_VA_MASK ((1L << TT_VA_SIZE) - 1)
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#define TT_G (1L << 63)
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#define TT_CTX(ctx) (((u_long)(ctx) & TT_CTX_MASK) << TT_CTX_SHIFT)
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#define TT_VA(va) ((u_long)(va) >> TT_VA_SHIFT)
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#define TD_SIZE_SHIFT (61)
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#define TD_SOFT2_SHIFT (50)
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#define TD_DIAG_SHIFT (41)
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#define TD_PA_SHIFT (13)
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#define TD_SOFT_SHIFT (7)
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#define TD_SIZE_SIZE (2)
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#define TD_SOFT2_SIZE (9)
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#define TD_DIAG_SIZE (9)
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#define TD_PA_SIZE (28)
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#define TD_SOFT_SIZE (6)
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#define TD_SIZE_MASK (((1L << TD_SIZE_SIZE) - 1) << TD_SIZE_SHIFT)
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#define TD_SOFT2_MASK (((1L << TD_SOFT2_SIZE) - 1) << TD_SOFT2_SHIFT)
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#define TD_DIAG_MASK (((1L << TD_DIAG_SIZE) - 1) << TD_DIAG_SHIFT)
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#define TD_PA_MASK (((1L << TD_PA_SIZE) - 1) << TD_PA_SHIFT)
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#define TD_SOFT_MASK (((1L << TD_SOFT_SIZE) - 1) << TD_SOFT_SHIFT)
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#define TD_VA_LOW_SHIFT TD_SOFT2_SHIFT
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#define TD_VA_LOW_MASK TD_SOFT2_MASK
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#define TS_EXEC (1L << 4)
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#define TS_INIT (1L << 3)
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#define TS_MNG (1L << 2)
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#define TS_REF (1L << 1)
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#define TS_W (1L << 0)
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#define TD_V (1L << 63)
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#define TD_8K (0L << TD_SIZE_SHIFT)
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#define TD_64K (1L << TD_SIZE_SHIFT)
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#define TD_512K (2L << TD_SIZE_SHIFT)
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#define TD_4M (3L << TD_SIZE_SHIFT)
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#define TD_NFO (1L << 60)
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#define TD_IE (1L << 59)
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#define TD_VPN_LOW(vpn) ((vpn << TD_SOFT2_SHIFT) & TD_SOFT2_MASK)
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#define TD_VA_LOW(va) (TD_VPN_LOW((va) >> PAGE_SHIFT))
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#define TD_PA(pa) ((pa) & TD_PA_MASK)
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#define TD_EXEC (TS_EXEC << TD_SOFT_SHIFT)
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#define TD_INIT (TS_INIT << TD_SOFT_SHIFT)
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#define TD_MNG (TS_MNG << TD_SOFT_SHIFT)
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#define TD_REF (TS_REF << TD_SOFT_SHIFT)
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#define TD_SW (TS_W << TD_SOFT_SHIFT)
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#define TD_L (1L << 6)
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#define TD_CP (1L << 5)
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#define TD_CV (1L << 4)
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#define TD_E (1L << 3)
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#define TD_P (1L << 2)
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#define TD_W (1L << 1)
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#define TD_G (1L << 0)
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#define TT_GET_CTX(tag) (((tag) >> TT_CTX_SHIFT) & TT_CTX_MASK)
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struct tte {
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u_long tte_tag;
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u_long tte_data;
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};
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struct stte {
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struct tte st_tte;
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vm_offset_t st_next;
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vm_offset_t st_prev;
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};
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static __inline vm_offset_t
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tte_get_vpn(struct tte tte)
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{
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return (((tte.tte_tag & TT_VA_MASK) << TT_VPN_SHIFT) |
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((tte.tte_data & TD_VA_LOW_MASK) >> TD_VA_LOW_SHIFT));
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}
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static __inline vm_offset_t
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tte_get_va(struct tte tte)
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{
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return (tte_get_vpn(tte) << PAGE_SHIFT);
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}
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static __inline void
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tte_invalidate(struct tte *tp)
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{
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atomic_clear_long(&tp->tte_data, TD_V);
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}
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static __inline int
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tte_match(struct tte tte, vm_offset_t va)
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{
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return ((tte.tte_data & TD_V) != 0 &&
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((tte.tte_tag ^ TT_VA(va)) & TT_VA_MASK) == 0 &&
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((tte.tte_data ^ TD_VA_LOW(va)) & TD_VA_LOW_MASK) == 0);
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}
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#endif /* !_MACHINE_TTE_H_ */
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