1 /*- 2 * SPDX-License-Identifier: BSD-2-Clause-FreeBSD 3 * 4 * Copyright (c) 2004-2010 Juli Mallett <[email protected]> 5 * All rights reserved. 6 * 7 * Redistribution and use in source and binary forms, with or without 8 * modification, are permitted provided that the following conditions 9 * are met: 10 * 1. Redistributions of source code must retain the above copyright 11 * notice, this list of conditions and the following disclaimer. 12 * 2. Redistributions in binary form must reproduce the above copyright 13 * notice, this list of conditions and the following disclaimer in the 14 * documentation and/or other materials provided with the distribution. 15 * 16 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 17 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 18 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 19 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 20 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 21 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 22 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 23 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 24 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 25 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 26 * SUCH DAMAGE. 27 * 28 * $FreeBSD$ 29 */ 30 31 #ifndef _MACHINE_TLB_H_ 32 #define _MACHINE_TLB_H_ 33 34 /* 35 * The first TLB entry that write random hits. 36 * TLB entry 0 maps the kernel stack of the currently running thread 37 * TLB entry 1 maps the pcpu area of processor (only for SMP builds) 38 */ 39 #define KSTACK_TLB_ENTRY 0 40 #ifdef SMP 41 #define PCPU_TLB_ENTRY 1 42 #define VMWIRED_ENTRIES 2 43 #else 44 #define VMWIRED_ENTRIES 1 45 #endif /* SMP */ 46 47 /* 48 * The number of process id entries. 49 */ 50 #define VMNUM_PIDS 256 51 52 extern int num_tlbentries; 53 54 void tlb_insert_wired(unsigned, vm_offset_t, pt_entry_t, pt_entry_t); 55 void tlb_invalidate_address(struct pmap *, vm_offset_t); 56 void tlb_invalidate_all(void); 57 void tlb_invalidate_all_user(struct pmap *); 58 void tlb_invalidate_range(struct pmap *, vm_offset_t, vm_offset_t); 59 void tlb_save(void); 60 void tlb_update(struct pmap *, vm_offset_t, pt_entry_t); 61 62 #endif /* !_MACHINE_TLB_H_ */ 63