1 /*- 2 * SPDX-License-Identifier: BSD-2-Clause-FreeBSD 3 * 4 * Copyright (C) 2010 Nathan Whitehorn 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 ``AS IS'' AND ANY EXPRESS OR 17 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 18 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 19 * IN NO EVENT SHALL TOOLS GMBH BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 20 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, 21 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; 22 * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, 23 * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR 24 * OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF 25 * ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 26 * 27 * $FreeBSD$ 28 */ 29 30 #ifndef _POWERPC_AIM_MMU_OEA64_H 31 #define _POWERPC_AIM_MMU_OEA64_H 32 33 #include "opt_pmap.h" 34 35 #include <vm/vm_extern.h> 36 #include <machine/mmuvar.h> 37 38 struct dump_context { 39 u_long ptex; 40 u_long ptex_end; 41 size_t blksz; 42 }; 43 44 extern const struct mmu_kobj oea64_mmu; 45 46 /* 47 * Helper routines 48 */ 49 50 /* Allocate physical memory for use in moea64_bootstrap. */ 51 vm_offset_t moea64_bootstrap_alloc(vm_size_t size, vm_size_t align); 52 /* Set an LPTE structure to match the contents of a PVO */ 53 void moea64_pte_from_pvo(const struct pvo_entry *pvo, struct lpte *lpte); 54 55 /* 56 * Flags 57 */ 58 59 #define MOEA64_PTE_PROT_UPDATE 1 60 #define MOEA64_PTE_INVALIDATE 2 61 62 /* 63 * Bootstrap subroutines 64 * 65 * An MMU_BOOTSTRAP() implementation looks like this: 66 * moea64_early_bootstrap(); 67 * Allocate Page Table 68 * moea64_mid_bootstrap(); 69 * Add mappings for MMU resources 70 * moea64_late_bootstrap(); 71 */ 72 73 void moea64_early_bootstrap(vm_offset_t kernelstart, 74 vm_offset_t kernelend); 75 void moea64_mid_bootstrap(vm_offset_t kernelstart, 76 vm_offset_t kernelend); 77 void moea64_late_bootstrap(vm_offset_t kernelstart, 78 vm_offset_t kernelend); 79 80 int64_t moea64_pte_replace(struct pvo_entry *, int); 81 int64_t moea64_pte_insert(struct pvo_entry *); 82 int64_t moea64_pte_unset(struct pvo_entry *); 83 int64_t moea64_pte_clear(struct pvo_entry *, uint64_t); 84 int64_t moea64_pte_synch(struct pvo_entry *); 85 86 typedef int64_t (*moea64_pte_replace_t)(struct pvo_entry *, int); 87 typedef int64_t (*moea64_pte_insert_t)(struct pvo_entry *); 88 typedef int64_t (*moea64_pte_unset_t)(struct pvo_entry *); 89 typedef int64_t (*moea64_pte_clear_t)(struct pvo_entry *, uint64_t); 90 typedef int64_t (*moea64_pte_synch_t)(struct pvo_entry *); 91 92 struct moea64_funcs { 93 moea64_pte_replace_t pte_replace; 94 moea64_pte_insert_t pte_insert; 95 moea64_pte_unset_t pte_unset; 96 moea64_pte_clear_t pte_clear; 97 moea64_pte_synch_t pte_synch; 98 }; 99 100 extern struct moea64_funcs *moea64_ops; 101 102 static inline uint64_t 103 moea64_pte_vpn_from_pvo_vpn(const struct pvo_entry *pvo) 104 { 105 return ((pvo->pvo_vpn >> (ADDR_API_SHFT64 - ADDR_PIDX_SHFT)) & 106 LPTE_AVPN_MASK); 107 } 108 109 /* 110 * Statistics 111 */ 112 113 #ifdef MOEA64_STATS 114 extern u_int moea64_pte_valid; 115 extern u_int moea64_pte_overflow; 116 #define STAT_MOEA64(x) x 117 #else 118 #define STAT_MOEA64(x) ((void)0) 119 #endif 120 121 /* 122 * State variables 123 */ 124 125 extern int moea64_large_page_shift; 126 extern uint64_t moea64_large_page_size; 127 extern uint64_t moea64_large_page_mask; 128 extern u_long moea64_pteg_count; 129 extern u_long moea64_pteg_mask; 130 extern int n_slbs; 131 132 #endif /* _POWERPC_AIM_MMU_OEA64_H */ 133