pmap.h revision 1.1.18.2
1 1.1.18.2 jdolecek /* $NetBSD: pmap.h,v 1.1.18.2 2017/12/03 11:36:39 jdolecek Exp $ */ 2 1.1.18.2 jdolecek 3 1.1.18.2 jdolecek /*- 4 1.1.18.2 jdolecek * Copyright (c) 2014 The NetBSD Foundation, Inc. 5 1.1.18.2 jdolecek * All rights reserved. 6 1.1.18.2 jdolecek * 7 1.1.18.2 jdolecek * This code is derived from software contributed to The NetBSD Foundation 8 1.1.18.2 jdolecek * by Matt Thomas of 3am Software Foundry. 9 1.1.18.2 jdolecek * 10 1.1.18.2 jdolecek * Redistribution and use in source and binary forms, with or without 11 1.1.18.2 jdolecek * modification, are permitted provided that the following conditions 12 1.1.18.2 jdolecek * are met: 13 1.1.18.2 jdolecek * 1. Redistributions of source code must retain the above copyright 14 1.1.18.2 jdolecek * notice, this list of conditions and the following disclaimer. 15 1.1.18.2 jdolecek * 2. Redistributions in binary form must reproduce the above copyright 16 1.1.18.2 jdolecek * notice, this list of conditions and the following disclaimer in the 17 1.1.18.2 jdolecek * documentation and/or other materials provided with the distribution. 18 1.1.18.2 jdolecek * 19 1.1.18.2 jdolecek * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS 20 1.1.18.2 jdolecek * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 21 1.1.18.2 jdolecek * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 22 1.1.18.2 jdolecek * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS 23 1.1.18.2 jdolecek * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 24 1.1.18.2 jdolecek * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 25 1.1.18.2 jdolecek * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 26 1.1.18.2 jdolecek * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 27 1.1.18.2 jdolecek * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 28 1.1.18.2 jdolecek * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 29 1.1.18.2 jdolecek * POSSIBILITY OF SUCH DAMAGE. 30 1.1.18.2 jdolecek */ 31 1.1.18.2 jdolecek 32 1.1.18.2 jdolecek #ifndef _RISCV_PMAP_H_ 33 1.1.18.2 jdolecek #define _RISCV_PMAP_H_ 34 1.1.18.2 jdolecek 35 1.1.18.2 jdolecek #ifdef _KERNEL_OPT 36 1.1.18.2 jdolecek #include "opt_modular.h" 37 1.1.18.2 jdolecek #endif 38 1.1.18.2 jdolecek 39 1.1.18.2 jdolecek #if !defined(_MODULE) 40 1.1.18.2 jdolecek 41 1.1.18.2 jdolecek #include <sys/types.h> 42 1.1.18.2 jdolecek #include <sys/pool.h> 43 1.1.18.2 jdolecek #include <sys/evcnt.h> 44 1.1.18.2 jdolecek 45 1.1.18.2 jdolecek #include <uvm/pmap/vmpagemd.h> 46 1.1.18.2 jdolecek 47 1.1.18.2 jdolecek #include <riscv/pte.h> 48 1.1.18.2 jdolecek 49 1.1.18.2 jdolecek #define PMAP_SEGTABSIZE (__SHIFTOUT(PTE_PPN0, PTE_PPN0) + 1) 50 1.1.18.2 jdolecek #define PMAP_PDETABSIZE (__SHIFTOUT(PTE_PPN0, PTE_PPN0) + 1) 51 1.1.18.2 jdolecek 52 1.1.18.2 jdolecek #define NBSEG (NBPG*NPTEPG) 53 1.1.18.2 jdolecek #ifdef _LP64 54 1.1.18.2 jdolecek #define NBXSEG (NBSEG*NSEGPG) 55 1.1.18.2 jdolecek #define XSEGSHIFT (SEGSHIFT + PGSHIFT - 3) 56 1.1.18.2 jdolecek #define XSEGOFSET (PTE_PPN1|SEGOFSET) 57 1.1.18.2 jdolecek #define SEGSHIFT (PGSHIFT + PGSHIFT - 3) 58 1.1.18.2 jdolecek #else 59 1.1.18.2 jdolecek #define SEGSHIFT (PGSHIFT + PGSHIFT - 2) 60 1.1.18.2 jdolecek #endif 61 1.1.18.2 jdolecek #define SEGOFSET (PTE_PPN0|PAGE_MASK) 62 1.1.18.2 jdolecek 63 1.1.18.2 jdolecek #define KERNEL_PID 0 64 1.1.18.2 jdolecek 65 1.1.18.2 jdolecek #define PMAP_HWPAGEWALKER 1 66 1.1.18.2 jdolecek #define PMAP_TLB_NUM_PIDS 256 67 1.1.18.2 jdolecek #define PMAP_TLB_MAX 1 68 1.1.18.2 jdolecek #ifdef _LP64 69 1.1.18.2 jdolecek #define PMAP_INVALID_PDETAB_ADDRESS ((pmap_pdetab_t *)(VM_MIN_KERNEL_ADDRESS - PAGE_SIZE)) 70 1.1.18.2 jdolecek #define PMAP_INVALID_SEGTAB_ADDRESS ((pmap_segtab_t *)(VM_MIN_KERNEL_ADDRESS - PAGE_SIZE)) 71 1.1.18.2 jdolecek #else 72 1.1.18.2 jdolecek #define PMAP_INVALID_PDETAB_ADDRESS ((pmap_pdetab_t *)0xdeadbeef) 73 1.1.18.2 jdolecek #define PMAP_INVALID_SEGTAB_ADDRESS ((pmap_segtab_t *)0xdeadbeef) 74 1.1.18.2 jdolecek #endif 75 1.1.18.2 jdolecek #define PMAP_TLB_FLUSH_ASID_ON_RESET false 76 1.1.18.2 jdolecek 77 1.1.18.2 jdolecek #define pmap_phys_address(x) (x) 78 1.1.18.2 jdolecek 79 1.1.18.2 jdolecek #define PMAP_NEED_PROCWR 80 1.1.18.2 jdolecek static inline void 81 1.1.18.2 jdolecek pmap_procwr(struct proc *p, vaddr_t va, vsize_t len) 82 1.1.18.2 jdolecek { 83 1.1.18.2 jdolecek __asm __volatile("fence\trw,rw; fence.i"); 84 1.1.18.2 jdolecek } 85 1.1.18.2 jdolecek 86 1.1.18.2 jdolecek 87 1.1.18.2 jdolecek #include <uvm/pmap/tlb.h> 88 1.1.18.2 jdolecek 89 1.1.18.2 jdolecek #include <uvm/pmap/pmap_tlb.h> 90 1.1.18.2 jdolecek 91 1.1.18.2 jdolecek #define PMAP_GROWKERNEL 92 1.1.18.2 jdolecek #define PMAP_STEAL_MEMORY 93 1.1.18.2 jdolecek 94 1.1.18.2 jdolecek #ifdef _KERNEL 95 1.1.18.2 jdolecek 96 1.1.18.2 jdolecek #define __HAVE_PMAP_MD 97 1.1.18.2 jdolecek struct pmap_md { 98 1.1.18.2 jdolecek paddr_t md_ptbr; 99 1.1.18.2 jdolecek }; 100 1.1.18.2 jdolecek 101 1.1.18.2 jdolecek struct vm_page * 102 1.1.18.2 jdolecek pmap_md_alloc_poolpage(int flags); 103 1.1.18.2 jdolecek vaddr_t pmap_md_map_poolpage(paddr_t, vsize_t); 104 1.1.18.2 jdolecek void pmap_md_unmap_poolpage(vaddr_t, vsize_t); 105 1.1.18.2 jdolecek bool pmap_md_direct_mapped_vaddr_p(vaddr_t); 106 1.1.18.2 jdolecek bool pmap_md_io_vaddr_p(vaddr_t); 107 1.1.18.2 jdolecek paddr_t pmap_md_direct_mapped_vaddr_to_paddr(vaddr_t); 108 1.1.18.2 jdolecek vaddr_t pmap_md_direct_map_paddr(paddr_t); 109 1.1.18.2 jdolecek void pmap_md_init(void); 110 1.1.18.2 jdolecek bool pmap_md_tlb_check_entry(void *, vaddr_t, tlb_asid_t, pt_entry_t); 111 1.1.18.2 jdolecek //void pmap_md_page_syncicache(struct vm_page *, const kcpuset_t *); 112 1.1.18.2 jdolecek 113 1.1.18.2 jdolecek void pmap_md_pdetab_activate(struct pmap *); 114 1.1.18.2 jdolecek void pmap_md_pdetab_init(struct pmap *); 115 1.1.18.2 jdolecek 116 1.1.18.2 jdolecek #ifdef __PMAP_PRIVATE 117 1.1.18.2 jdolecek static inline void 118 1.1.18.2 jdolecek pmap_md_page_syncicache(struct vm_page *pg, const kcpuset_t *kc) 119 1.1.18.2 jdolecek { 120 1.1.18.2 jdolecek __asm __volatile("fence\trw,rw; fence.i"); 121 1.1.18.2 jdolecek } 122 1.1.18.2 jdolecek 123 1.1.18.2 jdolecek /* 124 1.1.18.2 jdolecek * Virtual Cache Alias helper routines. Not a problem for RISCV CPUs. 125 1.1.18.2 jdolecek */ 126 1.1.18.2 jdolecek static inline bool 127 1.1.18.2 jdolecek pmap_md_vca_add(struct vm_page *pg, vaddr_t va, pt_entry_t *nptep) 128 1.1.18.2 jdolecek { 129 1.1.18.2 jdolecek return false; 130 1.1.18.2 jdolecek } 131 1.1.18.2 jdolecek 132 1.1.18.2 jdolecek static inline void 133 1.1.18.2 jdolecek pmap_md_vca_remove(struct vm_page *pg, vaddr_t va) 134 1.1.18.2 jdolecek { 135 1.1.18.2 jdolecek 136 1.1.18.2 jdolecek } 137 1.1.18.2 jdolecek 138 1.1.18.2 jdolecek static inline void 139 1.1.18.2 jdolecek pmap_md_vca_clean(struct vm_page *pg, vaddr_t va, int op) 140 1.1.18.2 jdolecek { 141 1.1.18.2 jdolecek } 142 1.1.18.2 jdolecek 143 1.1.18.2 jdolecek static inline size_t 144 1.1.18.2 jdolecek pmap_md_tlb_asid_max(void) 145 1.1.18.2 jdolecek { 146 1.1.18.2 jdolecek return PMAP_TLB_NUM_PIDS - 1; 147 1.1.18.2 jdolecek } 148 1.1.18.2 jdolecek #endif /* __PMAP_PRIVATE */ 149 1.1.18.2 jdolecek #endif /* _KERNEL */ 150 1.1.18.2 jdolecek 151 1.1.18.2 jdolecek #define POOL_VTOPHYS(va) ((paddr_t)((vaddr_t)(va)-VM_MAX_KERNEL_ADDRESS)) 152 1.1.18.2 jdolecek #define POOL_PHYSTOV(pa) ((vaddr_t)(paddr_t)(pa)+VM_MAX_KERNEL_ADDRESS) 153 1.1.18.2 jdolecek 154 1.1.18.2 jdolecek #include <uvm/pmap/pmap.h> 155 1.1.18.2 jdolecek 156 1.1.18.2 jdolecek #endif /* !_MODULE */ 157 1.1.18.2 jdolecek 158 1.1.18.2 jdolecek #if defined(MODULAR) || defined(_MODULE) 159 1.1.18.2 jdolecek /* 160 1.1.18.2 jdolecek * Define a compatible vm_page_md so that struct vm_page is the same size 161 1.1.18.2 jdolecek * whether we are using modules or not. 162 1.1.18.2 jdolecek */ 163 1.1.18.2 jdolecek #ifndef __HAVE_VM_PAGE_MD 164 1.1.18.2 jdolecek #define __HAVE_VM_PAGE_MD 165 1.1.18.2 jdolecek 166 1.1.18.2 jdolecek struct vm_page_md { 167 1.1.18.2 jdolecek uintptr_t mdpg_dummy[3]; 168 1.1.18.2 jdolecek }; 169 1.1.18.2 jdolecek #endif /* !__HVE_VM_PAGE_MD */ 170 1.1.18.2 jdolecek 171 1.1.18.2 jdolecek __CTASSERT(sizeof(struct vm_page_md) == sizeof(uintptr_t)*3); 172 1.1.18.2 jdolecek 173 1.1.18.2 jdolecek #endif /* MODULAR || _MODULE */ 174 1.1.18.2 jdolecek 175 1.1.18.2 jdolecek #endif /* !_RISCV_PMAP_H_ */ 176
Indexes created Thu Oct 23 22:10:10 GMT 2025