0e3d1b3853
thus may basically use the entire 64-bit kernel address space reduce VM_KMEM_SIZE_SCALE to 1 allowing kernel to use more memory.
96 lines
3.2 KiB
C
96 lines
3.2 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_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 (1 << TSB_BSHIFT)
|
|
#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)
|
|
|
|
#ifndef LOCORE
|
|
|
|
#define TSB_SIZE (TSB_BSIZE / sizeof(struct tte))
|
|
|
|
extern struct tte *tsb_kernel;
|
|
extern vm_size_t tsb_kernel_mask;
|
|
extern vm_size_t tsb_kernel_size;
|
|
extern vm_paddr_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 /* !LOCORE */
|
|
|
|
#endif /* !_MACHINE_TSB_H_ */
|