1 /* $NetBSD: pmap.h,v 1.2 2011/01/18 01:02:54 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 #include <sys/cpu.h> 44 #include <sys/kcore.h> 45 #include <uvm/uvm_page.h> 46 #include <powerpc/booke/cpuvar.h> 47 48 #define PMAP_MD_NOCACHE 0x01000000 49 50 #include <powerpc/booke/pte.h> 51 52 #define NBSEG (NBPG*NPTEPG) 53 #define SEGSHIFT (PGSHIFT + PGSHIFT - 2) 54 #define SEGOFSET ((1 << SEGSHIFT) - 1) 55 #define PMAP_SEGTABSIZE (1 << (32 - SEGSHIFT)) 56 #define NPTEPG (NBPG >> 2) 57 58 #define KERNEL_PID 0 59 60 #define PMAP_TLB_NUM_PIDS 256 61 #define PMAP_INVALID_SEGTAB_ADDRESS ((struct pmap_segtab *)0xfeeddead) 62 63 #ifndef _LOCORE 64 #define pmap_phys_address(x) (x) 65 66 void pmap_procwr(struct proc *, vaddr_t, size_t); 67 #define PMAP_NEED_PROCWR 68 69 struct vm_page * 70 pmap_md_alloc_poolpage(int flags); 71 vaddr_t pmap_md_map_poolpage(paddr_t); 72 bool pmap_md_direct_mapped_vaddr_p(vaddr_t); 73 bool pmap_md_io_vaddr_p(vaddr_t); 74 paddr_t pmap_md_direct_mapped_vaddr_to_paddr(vaddr_t); 75 vaddr_t pmap_md_direct_map_paddr(paddr_t); 76 void pmap_md_init(void); 77 78 void pmap_md_page_syncicache(struct vm_page *); 79 void pmap_bootstrap(vaddr_t, vaddr_t, const phys_ram_seg_t *, size_t); 80 bool pmap_extract(struct pmap *, vaddr_t, paddr_t *); 81 82 static inline paddr_t vtophys(vaddr_t); 83 84 static inline paddr_t 85 vtophys(vaddr_t va) 86 { 87 paddr_t pa; 88 89 if (pmap_extract(pmap_kernel(), va, &pa)) 90 return pa; 91 KASSERT(0); 92 return (paddr_t) -1; 93 } 94 95 /* 96 * Virtual Cache Alias helper routines. Not a problem for Booke CPUs. 97 */ 98 static inline bool 99 pmap_md_vca_add(struct vm_page *pg, vaddr_t va, pt_entry_t *nptep) 100 { 101 return false; 102 } 103 104 static inline void 105 pmap_md_vca_remove(struct vm_page *pg, vaddr_t va) 106 { 107 108 } 109 110 static inline void 111 pmap_md_vca_clean(struct vm_page *pg, vaddr_t va, int op) 112 { 113 } 114 115 #define POOL_VTOPHYS(va) ((paddr_t)(vaddr_t)(va)) 116 #define POOL_PHYSTOV(pa) ((vaddr_t)(paddr_t)(pa)) 117 118 #include <common/pmap/tlb/pmap.h> 119 #endif /* _LOCORE */ 120 121 #endif /* !_POWERPC_BOOKE_PMAP_H_ */ 122