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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_TSB_H_
#define _MACHINE_TSB_H_
#define TSB_PAGES_SHIFT (4)
#define TSB_PAGES (1 << TSB_PAGES_SHIFT)
#define TSB_BSHIFT (TSB_PAGES_SHIFT + PAGE_SHIFT)
#define TSB_BSIZE (1UL << TSB_BSHIFT)
#define TSB_SIZE (TSB_BSIZE / sizeof(struct tte))
#define TSB_BUCKET_SHIFT (2)
#define TSB_BUCKET_SIZE (1 << TSB_BUCKET_SHIFT)
#define TSB_BUCKET_ADDRESS_BITS \
(TSB_BSHIFT - TSB_BUCKET_SHIFT - TTE_SHIFT)
#define TSB_BUCKET_MASK ((1 << TSB_BUCKET_ADDRESS_BITS) - 1)
extern struct tte *tsb_kernel;
extern vm_size_t tsb_kernel_mask;
extern vm_size_t tsb_kernel_size;
extern vm_offset_t tsb_kernel_phys;
static __inline struct tte *
tsb_vpntobucket(pmap_t pm, vm_offset_t vpn)
{
return (&pm->pm_tsb[(vpn & TSB_BUCKET_MASK) << TSB_BUCKET_SHIFT]);
}
static __inline struct tte *
tsb_vtobucket(pmap_t pm, u_long sz, vm_offset_t va)
{
return (tsb_vpntobucket(pm, va >> TTE_PAGE_SHIFT(sz)));
}
static __inline struct tte *
tsb_kvpntotte(vm_offset_t vpn)
{
return (&tsb_kernel[vpn & tsb_kernel_mask]);
}
static __inline struct tte *
tsb_kvtotte(vm_offset_t va)
{
return (tsb_kvpntotte(va >> PAGE_SHIFT));
}
typedef int (tsb_callback_t)(struct pmap *, struct pmap *, struct tte *,
vm_offset_t);
struct tte *tsb_tte_lookup(pmap_t pm, vm_offset_t va);
void tsb_tte_remove(struct tte *stp);
struct tte *tsb_tte_enter(pmap_t pm, vm_page_t m, vm_offset_t va, u_long sz,
u_long data);
void tsb_tte_local_remove(struct tte *tp);
void tsb_foreach(pmap_t pm1, pmap_t pm2, vm_offset_t start, vm_offset_t end,
tsb_callback_t *callback);
#endif /* !_MACHINE_TSB_H_ */
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