1 /*- 2 * SPDX-License-Identifier: BSD-2-Clause 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 28 #ifndef _POWERPC_AIM_MMU_OEA64_H 29 #define _POWERPC_AIM_MMU_OEA64_H 30 31 #include "opt_pmap.h" 32 33 #include <vm/vm_extern.h> 34 #include <machine/mmuvar.h> 35 36 struct dump_context { 37 u_long ptex; 38 u_long ptex_end; 39 size_t blksz; 40 }; 41 42 extern const struct mmu_kobj oea64_mmu; 43 44 /* 45 * Helper routines 46 */ 47 48 /* Allocate physical memory for use in moea64_bootstrap. */ 49 vm_offset_t moea64_bootstrap_alloc(vm_size_t size, vm_size_t align); 50 /* Set an LPTE structure to match the contents of a PVO */ 51 void moea64_pte_from_pvo(const struct pvo_entry *pvo, struct lpte *lpte); 52 53 /* 54 * Flags 55 */ 56 57 #define MOEA64_PTE_PROT_UPDATE 1 58 #define MOEA64_PTE_INVALIDATE 2 59 60 /* 61 * Bootstrap subroutines 62 * 63 * An MMU_BOOTSTRAP() implementation looks like this: 64 * moea64_early_bootstrap(); 65 * Allocate Page Table 66 * moea64_mid_bootstrap(); 67 * Add mappings for MMU resources 68 * moea64_late_bootstrap(); 69 */ 70 71 void moea64_early_bootstrap(vm_offset_t kernelstart, 72 vm_offset_t kernelend); 73 void moea64_mid_bootstrap(vm_offset_t kernelstart, 74 vm_offset_t kernelend); 75 void moea64_late_bootstrap(vm_offset_t kernelstart, 76 vm_offset_t kernelend); 77 78 /* "base" install method for initializing moea64 pmap ifuncs */ 79 void moea64_install(void); 80 81 int64_t moea64_pte_replace(struct pvo_entry *, int); 82 int64_t moea64_pte_insert(struct pvo_entry *); 83 int64_t moea64_pte_unset(struct pvo_entry *); 84 int64_t moea64_pte_clear(struct pvo_entry *, uint64_t); 85 int64_t moea64_pte_synch(struct pvo_entry *); 86 int64_t moea64_pte_insert_sp(struct pvo_entry *); 87 int64_t moea64_pte_unset_sp(struct pvo_entry *); 88 int64_t moea64_pte_replace_sp(struct pvo_entry *); 89 90 typedef int64_t (*moea64_pte_replace_t)(struct pvo_entry *, int); 91 typedef int64_t (*moea64_pte_insert_t)(struct pvo_entry *); 92 typedef int64_t (*moea64_pte_unset_t)(struct pvo_entry *); 93 typedef int64_t (*moea64_pte_clear_t)(struct pvo_entry *, uint64_t); 94 typedef int64_t (*moea64_pte_synch_t)(struct pvo_entry *); 95 typedef int64_t (*moea64_pte_insert_sp_t)(struct pvo_entry *); 96 typedef int64_t (*moea64_pte_unset_sp_t)(struct pvo_entry *); 97 typedef int64_t (*moea64_pte_replace_sp_t)(struct pvo_entry *); 98 99 struct moea64_funcs { 100 moea64_pte_replace_t pte_replace; 101 moea64_pte_insert_t pte_insert; 102 moea64_pte_unset_t pte_unset; 103 moea64_pte_clear_t pte_clear; 104 moea64_pte_synch_t pte_synch; 105 moea64_pte_insert_sp_t pte_insert_sp; 106 moea64_pte_unset_sp_t pte_unset_sp; 107 moea64_pte_replace_sp_t pte_replace_sp; 108 }; 109 110 extern struct moea64_funcs *moea64_ops; 111 112 static inline uint64_t 113 moea64_pte_vpn_from_pvo_vpn(const struct pvo_entry *pvo) 114 { 115 return ((pvo->pvo_vpn >> (ADDR_API_SHFT64 - ADDR_PIDX_SHFT)) & 116 LPTE_AVPN_MASK); 117 } 118 119 /* 120 * Statistics 121 */ 122 123 #ifdef MOEA64_STATS 124 extern u_int moea64_pte_valid; 125 extern u_int moea64_pte_overflow; 126 #define STAT_MOEA64(x) x 127 #else 128 #define STAT_MOEA64(x) ((void)0) 129 #endif 130 131 /* 132 * State variables 133 */ 134 135 extern int moea64_large_page_shift; 136 extern uint64_t moea64_large_page_size; 137 extern uint64_t moea64_large_page_mask; 138 extern u_long moea64_pteg_count; 139 extern u_long moea64_pteg_mask; 140 extern int n_slbs; 141 extern bool moea64_has_lp_4k_16m; 142 143 #endif /* _POWERPC_AIM_MMU_OEA64_H */ 144