/*- * 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) #define TSB_KERNEL_SIZE \ ((KVA_PAGES * PAGE_SIZE_4M) / sizeof(struct tte)) #define TSB_KERNEL_MASK (TSB_KERNEL_SIZE - 1) #define TSB_KERNEL_VA_MASK (TSB_KERNEL_MASK << TTE_SHIFT) extern struct tte *tsb_kernel; 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, vm_offset_t va) { return (tsb_vpntobucket(pm, va >> PAGE_SHIFT)); } 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 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_ */