1 /* $NetBSD: pmap_coldfire.h,v 1.3 2020/08/07 07:19:45 skrll Exp $ */ 2 /*- 3 * Copyright (c) 2013 The NetBSD Foundation, Inc. 4 * All rights reserved. 5 * 6 * This code is derived from software contributed to The NetBSD Foundation 7 * by Matt Thomas of 3am Software Foundry. 8 * 9 * Redistribution and use in source and binary forms, with or without 10 * modification, are permitted provided that the following conditions 11 * are met: 12 * 1. Redistributions of source code must retain the above copyright 13 * notice, this list of conditions and the following disclaimer. 14 * 2. Redistributions in binary form must reproduce the above copyright 15 * notice, this list of conditions and the following disclaimer in the 16 * documentation and/or other materials provided with the distribution. 17 * 18 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS 19 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 20 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 21 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS 22 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 23 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 24 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 25 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 26 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 27 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 28 * POSSIBILITY OF SUCH DAMAGE. 29 */ 30 31 #ifndef _M68K_PMAP_COLDFIRE_H_ 32 #define M68K_PMAP_COLDFIRE_H_ 33 34 #ifdef _LOCORE 35 #error use assym.h instead 36 #endif 37 38 #if defined(_MODULE) 39 #error this file should not be included by loadable kernel modules 40 #endif 41 42 #ifdef _KERNEL_OPT 43 #include "opt_pmap.h" 44 #endif 45 46 #include <sys/cpu.h> 47 #include <sys/kcore.h> 48 #include <uvm/uvm_page.h> 49 #ifdef __PMAP_PRIVATE 50 #include <powerpc/booke/cpuvar.h> 51 #include <powerpc/cpuset.h> 52 #endif 53 54 #define PMAP_NEED_PROCWR 55 56 #include <uvm/pmap/vmpagemd.h> 57 58 #include <m68k/pte_coldfire.h> 59 60 #define NBSEG (NBPG*NPTEPG) 61 #define SEGSHIFT (PGSHIFT + PGSHIFT - 2) 62 #define SEGOFSET ((1 << SEGSHIFT) - 1) 63 #define PMAP_SEGTABSIZE (1 << (32 - SEGSHIFT)) 64 #define NPTEPG (NBPG >> 2) 65 66 #define KERNEL_PID 0 67 68 #define PMAP_TLB_MAX 1 69 #define PMAP_TLB_NUM_PIDS 256 70 #define PMAP_INVALID_SEGTAB_ADDRESS ((pmap_segtab_t *)0xfeeddead) 71 72 #define pmap_phys_address(x) (x) 73 74 void pmap_procwr(struct proc *, vaddr_t, size_t); 75 #define PMAP_NEED_PROCWR 76 77 #ifdef __PMAP_PRIVATE 78 struct vm_page * 79 pmap_md_alloc_poolpage(int flags); 80 vaddr_t pmap_md_map_poolpage(paddr_t, vsize_t); 81 void pmap_md_unmap_poolpage(vaddr_t, vsize_t); 82 bool pmap_md_direct_mapped_vaddr_p(vaddr_t); 83 bool pmap_md_io_vaddr_p(vaddr_t); 84 paddr_t pmap_md_direct_mapped_vaddr_to_paddr(vaddr_t); 85 vaddr_t pmap_md_direct_map_paddr(paddr_t); 86 void pmap_md_init(void); 87 88 bool pmap_md_tlb_check_entry(void *, vaddr_t, tlb_asid_t, pt_entry_t); 89 90 #ifdef PMAP_MINIMALTLB 91 vaddr_t pmap_kvptefill(vaddr_t, vaddr_t, pt_entry_t); 92 #endif 93 #endif 94 95 void pmap_md_page_syncicache(struct vm_page *, const kcpuset_t *); 96 vaddr_t pmap_bootstrap(vaddr_t, vaddr_t, phys_ram_seg_t *, size_t); 97 bool pmap_extract(struct pmap *, vaddr_t, paddr_t *); 98 99 static inline paddr_t vtophys(vaddr_t); 100 101 static inline paddr_t 102 vtophys(vaddr_t va) 103 { 104 paddr_t pa; 105 106 if (pmap_extract(pmap_kernel(), va, &pa)) 107 return pa; 108 KASSERT(0); 109 return (paddr_t) -1; 110 } 111 112 #ifdef __PMAP_PRIVATE 113 /* 114 * Virtual Cache Alias helper routines. Not a problem for Booke CPUs. 115 */ 116 static inline bool 117 pmap_md_vca_add(struct vm_page *pg, vaddr_t va, pt_entry_t *nptep) 118 { 119 return false; 120 } 121 122 static inline void 123 pmap_md_vca_remove(struct vm_page *pg, vaddr_t va) 124 { 125 126 } 127 128 static inline void 129 pmap_md_vca_clean(struct vm_page *pg, vaddr_t va, int op) 130 { 131 } 132 133 static inline size_t 134 pmap_md_tlb_asid_max(void) 135 { 136 return PMAP_TLB_NUM_PIDS - 1; 137 } 138 139 static inline void 140 pmap_md_xtab_activate(struct pmap *pm, struct lwp *l) 141 { 142 143 /* nothing */ 144 } 145 146 static inline void 147 pmap_md_xtab_deactivate(struct pmap *pm) 148 { 149 150 /* nothing */ 151 } 152 #endif 153 154 #define POOL_VTOPHYS(va) ((paddr_t)(vaddr_t)(va)) 155 #define POOL_PHYSTOV(pa) ((vaddr_t)(paddr_t)(pa)) 156 157 #include <uvm/pmap/pmap.h> 158 159 #endif /* !_M68K_PMAP_COLDFIRE_H_ */ 160