1 /* $NetBSD: xenpmap.h,v 1.24 2009/10/23 02:32:33 snj Exp $ */ 2 3 /* 4 * 5 * Copyright (c) 2004 Christian Limpach. 6 * All rights reserved. 7 * 8 * Redistribution and use in source and binary forms, with or without 9 * modification, are permitted provided that the following conditions 10 * are met: 11 * 1. Redistributions of source code must retain the above copyright 12 * notice, this list of conditions and the following disclaimer. 13 * 2. Redistributions in binary form must reproduce the above copyright 14 * notice, this list of conditions and the following disclaimer in the 15 * documentation and/or other materials provided with the distribution. 16 * 17 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR 18 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 19 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 20 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, 21 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 22 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 23 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 24 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 25 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF 26 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 27 */ 28 29 30 #ifndef _XEN_XENPMAP_H_ 31 #define _XEN_XENPMAP_H_ 32 #include "opt_xen.h" 33 34 #define INVALID_P2M_ENTRY (~0UL) 35 36 void xpq_queue_machphys_update(paddr_t, paddr_t); 37 void xpq_queue_invlpg(vaddr_t); 38 void xpq_queue_pte_update(paddr_t, pt_entry_t); 39 void xpq_queue_pt_switch(paddr_t); 40 void xpq_flush_queue(void); 41 void xpq_queue_set_ldt(vaddr_t, uint32_t); 42 void xpq_queue_tlb_flush(void); 43 void xpq_queue_pin_table(paddr_t); 44 void xpq_queue_unpin_table(paddr_t); 45 int xpq_update_foreign(paddr_t, pt_entry_t, int); 46 47 extern unsigned long *xpmap_phys_to_machine_mapping; 48 49 /* 50 * On Xen-2, the start of the day virtual memory starts at KERNTEXTOFF 51 * (0xc0100000). On Xen-3 for domain0 it starts at KERNBASE (0xc0000000). 52 * So the offset between physical and virtual address is different on 53 * Xen-2 and Xen-3 for domain0. 54 * starting with xen-3.0.2, we can add notes so that virtual memory starts 55 * at KERNBASE for domU as well. 56 */ 57 #if defined(DOM0OPS) || !defined(XEN_COMPAT_030001) 58 #define XPMAP_OFFSET 0 59 #else 60 #define XPMAP_OFFSET (KERNTEXTOFF - KERNBASE) 61 #endif 62 63 #define mfn_to_pfn(mfn) (machine_to_phys_mapping[(mfn)]) 64 #define pfn_to_mfn(pfn) (xpmap_phys_to_machine_mapping[(pfn)]) 65 66 static __inline paddr_t 67 xpmap_mtop(paddr_t mpa) 68 { 69 return ( 70 ((paddr_t)machine_to_phys_mapping[mpa >> PAGE_SHIFT] << PAGE_SHIFT) 71 + XPMAP_OFFSET) | (mpa & ~PG_FRAME); 72 } 73 74 static __inline paddr_t 75 xpmap_mtop_masked(paddr_t mpa) 76 { 77 return ( 78 ((paddr_t)machine_to_phys_mapping[mpa >> PAGE_SHIFT] << PAGE_SHIFT) 79 + XPMAP_OFFSET); 80 } 81 82 static __inline paddr_t 83 xpmap_ptom(paddr_t ppa) 84 { 85 return (((paddr_t)xpmap_phys_to_machine_mapping[(ppa - 86 XPMAP_OFFSET) >> PAGE_SHIFT]) << PAGE_SHIFT) 87 | (ppa & ~PG_FRAME); 88 } 89 90 static __inline paddr_t 91 xpmap_ptom_masked(paddr_t ppa) 92 { 93 return (((paddr_t)xpmap_phys_to_machine_mapping[(ppa - 94 XPMAP_OFFSET) >> PAGE_SHIFT]) << PAGE_SHIFT); 95 } 96 97 static inline void 98 MULTI_update_va_mapping( 99 multicall_entry_t *mcl, vaddr_t va, 100 pt_entry_t new_val, unsigned long flags) 101 { 102 mcl->op = __HYPERVISOR_update_va_mapping; 103 mcl->args[0] = va; 104 #if defined(__x86_64__) 105 mcl->args[1] = new_val; 106 mcl->args[2] = flags; 107 #else 108 mcl->args[1] = (new_val & 0xffffffff); 109 #ifdef PAE 110 mcl->args[2] = (new_val >> 32); 111 #else 112 mcl->args[2] = 0; 113 #endif 114 mcl->args[3] = flags; 115 #endif 116 } 117 118 static inline void 119 MULTI_update_va_mapping_otherdomain( 120 multicall_entry_t *mcl, vaddr_t va, 121 pt_entry_t new_val, unsigned long flags, domid_t domid) 122 { 123 mcl->op = __HYPERVISOR_update_va_mapping_otherdomain; 124 mcl->args[0] = va; 125 #if defined(__x86_64__) 126 mcl->args[1] = new_val; 127 mcl->args[2] = flags; 128 mcl->args[3] = domid; 129 #else 130 mcl->args[1] = (new_val & 0xffffffff); 131 #ifdef PAE 132 mcl->args[2] = (new_val >> 32); 133 #else 134 mcl->args[2] = 0; 135 #endif 136 mcl->args[3] = flags; 137 mcl->args[4] = domid; 138 #endif 139 } 140 #if defined(__x86_64__) 141 #define MULTI_UVMFLAGS_INDEX 2 142 #define MULTI_UVMDOMID_INDEX 3 143 #else 144 #define MULTI_UVMFLAGS_INDEX 3 145 #define MULTI_UVMDOMID_INDEX 4 146 #endif 147 148 #if defined(__x86_64__) 149 void xen_set_user_pgd(paddr_t); 150 #endif 151 152 #endif /* _XEN_XENPMAP_H_ */ 153