1 /* $NetBSD: pmap.h,v 1.16 2016/07/11 16:06:52 matt Exp $ */ 2 /*- 3 * Copyright (c) 2010, 2011 The NetBSD Foundation, Inc. 4 * All rights reserved. 5 * 6 * This code is derived from software contributed to The NetBSD Foundation 7 * by Raytheon BBN Technologies Corp and Defense Advanced Research Projects 8 * Agency and which was developed by Matt Thomas of 3am Software Foundry. 9 * 10 * This material is based upon work supported by the Defense Advanced Research 11 * Projects Agency and Space and Naval Warfare Systems Center, Pacific, under 12 * Contract No. N66001-09-C-2073. 13 * Approved for Public Release, Distribution Unlimited 14 * 15 * Redistribution and use in source and binary forms, with or without 16 * modification, are permitted provided that the following conditions 17 * are met: 18 * 1. Redistributions of source code must retain the above copyright 19 * notice, this list of conditions and the following disclaimer. 20 * 2. Redistributions in binary form must reproduce the above copyright 21 * notice, this list of conditions and the following disclaimer in the 22 * documentation and/or other materials provided with the distribution. 23 * 24 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS 25 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 26 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 27 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS 28 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 29 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 30 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 31 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 32 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 33 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 34 * POSSIBILITY OF SUCH DAMAGE. 35 */ 36 #ifndef _POWERPC_BOOKE_PMAP_H_ 37 #define _POWERPC_BOOKE_PMAP_H_ 38 39 #ifdef _LOCORE 40 #error use assym.h instead 41 #endif 42 43 #if defined(_MODULE) 44 #error this file should not be included by loadable kernel modules 45 #endif 46 47 #ifdef _KERNEL_OPT 48 #include "opt_pmap.h" 49 #endif 50 51 #include <sys/cpu.h> 52 #include <sys/kcore.h> 53 #include <uvm/uvm_page.h> 54 #ifdef __PMAP_PRIVATE 55 #include <powerpc/booke/cpuvar.h> 56 #endif 57 58 #define PMAP_NEED_PROCWR 59 60 #include <uvm/pmap/vmpagemd.h> 61 62 #include <powerpc/booke/pte.h> 63 64 #define NBSEG (NBPG*NPTEPG) 65 #define SEGSHIFT (PGSHIFT + PGSHIFT - 2) 66 #define SEGOFSET ((1 << SEGSHIFT) - 1) 67 #define PMAP_SEGTABSIZE (1 << (32 - SEGSHIFT)) 68 #define NPTEPG (NBPG >> 2) 69 70 #define KERNEL_PID 0 71 72 #define PMAP_TLB_NUM_PIDS 256 73 #define PMAP_TLB_MAX 1 74 #define PMAP_INVALID_SEGTAB_ADDRESS ((pmap_segtab_t *)0xfeeddead) 75 #define PMAP_TLB_FLUSH_ASID_ON_RESET false 76 77 #define pmap_phys_address(x) (x) 78 79 void pmap_procwr(struct proc *, vaddr_t, size_t); 80 #define PMAP_NEED_PROCWR 81 82 #ifdef __PMAP_PRIVATE 83 struct vm_page * 84 pmap_md_alloc_poolpage(int flags); 85 vaddr_t pmap_md_map_poolpage(paddr_t, vsize_t); 86 void pmap_md_unmap_poolpage(vaddr_t, vsize_t); 87 bool pmap_md_direct_mapped_vaddr_p(vaddr_t); 88 bool pmap_md_io_vaddr_p(vaddr_t); 89 paddr_t pmap_md_direct_mapped_vaddr_to_paddr(vaddr_t); 90 vaddr_t pmap_md_direct_map_paddr(paddr_t); 91 void pmap_md_init(void); 92 93 bool pmap_md_tlb_check_entry(void *, vaddr_t, tlb_asid_t, pt_entry_t); 94 95 #ifdef MULTIPROCESSOR 96 #define PMAP_MD_NEED_TLB_MISS_LOCK 97 void pmap_md_tlb_miss_lock_enter(void); 98 void pmap_md_tlb_miss_lock_exit(void); 99 #endif /* MULTIPROCESSOR */ 100 101 #ifdef PMAP_MINIMALTLB 102 vaddr_t pmap_kvptefill(vaddr_t, vaddr_t, pt_entry_t); 103 #endif 104 #endif 105 106 void pmap_md_page_syncicache(struct vm_page *, const kcpuset_t *); 107 vaddr_t pmap_bootstrap(vaddr_t, vaddr_t, phys_ram_seg_t *, size_t); 108 bool pmap_extract(struct pmap *, vaddr_t, paddr_t *); 109 110 static inline paddr_t vtophys(vaddr_t); 111 112 static inline paddr_t 113 vtophys(vaddr_t va) 114 { 115 paddr_t pa; 116 117 if (pmap_extract(pmap_kernel(), va, &pa)) 118 return pa; 119 KASSERT(0); 120 return (paddr_t) -1; 121 } 122 123 #ifdef __PMAP_PRIVATE 124 /* 125 * Virtual Cache Alias helper routines. Not a problem for Booke CPUs. 126 */ 127 static inline bool 128 pmap_md_vca_add(struct vm_page *pg, vaddr_t va, pt_entry_t *nptep) 129 { 130 return false; 131 } 132 133 static inline void 134 pmap_md_vca_remove(struct vm_page *pg, vaddr_t va, bool dirty) 135 { 136 137 } 138 139 static inline void 140 pmap_md_vca_clean(struct vm_page *pg, vaddr_t va, int op) 141 { 142 } 143 #endif 144 145 #ifdef __PMAP_PRIVATE 146 static inline size_t 147 pmap_md_tlb_asid_max(void) 148 { 149 return PMAP_TLB_NUM_PIDS - 1; 150 } 151 152 struct vm_physseg; 153 static inline bool 154 pmap_md_ok_to_steal_p(const struct vm_physseg *seg, size_t npgs) 155 { 156 return true; 157 } 158 #endif 159 160 #define POOL_VTOPHYS(va) ((paddr_t)(vaddr_t)(va)) 161 #define POOL_PHYSTOV(pa) ((vaddr_t)(paddr_t)(pa)) 162 163 #include <uvm/pmap/pmap.h> 164 165 #endif /* !_POWERPC_BOOKE_PMAP_H_ */ 166