3c997c536c
virtual page number in a much more convenient way; all in one piece. This greatly simplifies the comparison for a matching tte, and allows the fault handlers to be much simpler due to not having to load wierd masks. Rewrite the tlb fault handlers to account for the new format. These are also written to allow faults on the user tsb inside of the fault handlers; the kernel fault handler must be aware of this and not clobber the other's registers. The faults do not yet occur due to other support that is needed (and still under my desk). Bug fixes from: tmm
107 lines
3.6 KiB
C
107 lines
3.6 KiB
C
/*-
|
|
* 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_
|
|
|
|
#define TTE_SHIFT (4)
|
|
|
|
#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 (((1UL << TD_SIZE_SIZE) - 1) << TD_SIZE_SHIFT)
|
|
#define TD_SOFT2_MASK (((1UL << TD_SOFT2_SIZE) - 1) << TD_SOFT2_SHIFT)
|
|
#define TD_DIAG_MASK (((1UL << TD_DIAG_SIZE) - 1) << TD_DIAG_SHIFT)
|
|
#define TD_PA_MASK (((1UL << TD_PA_SIZE) - 1) << TD_PA_SHIFT)
|
|
#define TD_SOFT_MASK (((1UL << TD_SOFT_SIZE) - 1) << TD_SOFT_SHIFT)
|
|
|
|
#define TS_EXEC (1UL << 4)
|
|
#define TS_REF (1UL << 3)
|
|
#define TS_PV (1UL << 2)
|
|
#define TS_W (1UL << 1)
|
|
#define TS_WIRED (1UL << 0)
|
|
|
|
#define TD_V (1UL << 63)
|
|
#define TD_8K (0UL << TD_SIZE_SHIFT)
|
|
#define TD_64K (1UL << TD_SIZE_SHIFT)
|
|
#define TD_512K (2UL << TD_SIZE_SHIFT)
|
|
#define TD_4M (3UL << TD_SIZE_SHIFT)
|
|
#define TD_NFO (1UL << 60)
|
|
#define TD_IE (1UL << 59)
|
|
#define TD_PA(pa) ((pa) & TD_PA_MASK)
|
|
#define TD_EXEC (TS_EXEC << TD_SOFT_SHIFT)
|
|
#define TD_REF (TS_REF << TD_SOFT_SHIFT)
|
|
#define TD_PV (TS_PV << TD_SOFT_SHIFT)
|
|
#define TD_SW (TS_W << TD_SOFT_SHIFT)
|
|
#define TD_WIRED (TS_WIRED << TD_SOFT_SHIFT)
|
|
#define TD_L (1UL << 6)
|
|
#define TD_CP (1UL << 5)
|
|
#define TD_CV (1UL << 4)
|
|
#define TD_E (1UL << 3)
|
|
#define TD_P (1UL << 2)
|
|
#define TD_W (1UL << 1)
|
|
#define TD_G (1UL << 0)
|
|
|
|
#define TV_VPN(va) ((va) >> PAGE_SHIFT)
|
|
|
|
#define TD_GET_SIZE(d) (((d) >> TD_SIZE_SHIFT) & 3)
|
|
#define TD_GET_PA(d) ((d) & TD_PA_MASK)
|
|
#define TD_GET_TLB(d) (((d) & TD_EXEC) ? (TLB_DTLB | TLB_ITLB) : TLB_DTLB)
|
|
#define TV_GET_VA(vpn) ((vpn) << PAGE_SHIFT)
|
|
|
|
struct tte {
|
|
u_long tte_vpn;
|
|
u_long tte_data;
|
|
};
|
|
|
|
static __inline int
|
|
tte_match_vpn(struct tte tte, vm_offset_t vpn)
|
|
{
|
|
return ((tte.tte_data & TD_V) != 0 && tte.tte_vpn == vpn);
|
|
}
|
|
|
|
static __inline int
|
|
tte_match(struct tte tte, vm_offset_t va)
|
|
{
|
|
return (tte_match_vpn(tte, va >> PAGE_SHIFT));
|
|
}
|
|
|
|
#endif /* !_MACHINE_TTE_H_ */
|