1 /* 2 * CDDL HEADER START 3 * 4 * The contents of this file are subject to the terms of the 5 * Common Development and Distribution License (the "License"). 6 * You may not use this file except in compliance with the License. 7 * 8 * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE 9 * or http://www.opensolaris.org/os/licensing. 10 * See the License for the specific language governing permissions 11 * and limitations under the License. 12 * 13 * When distributing Covered Code, include this CDDL HEADER in each 14 * file and include the License file at usr/src/OPENSOLARIS.LICENSE. 15 * If applicable, add the following below this CDDL HEADER, with the 16 * fields enclosed by brackets "[]" replaced with your own identifying 17 * information: Portions Copyright [yyyy] [name of copyright owner] 18 * 19 * CDDL HEADER END 20 */ 21 /* 22 * Copyright 2007 Sun Microsystems, Inc. All rights reserved. 23 * Use is subject to license terms. 24 */ 25 26 #ifndef _SYS_XEN_MMU_H 27 #define _SYS_XEN_MMU_H 28 29 #pragma ident "%Z%%M% %I% %E% SMI" 30 31 #ifdef __cplusplus 32 extern "C" { 33 #endif 34 35 /* 36 * Platform-dependent MMU routines and types for the hypervisor. 37 * 38 * WARNING: this header file is used by both dboot and i86pc, so don't go using 39 * normal kernel headers. 40 */ 41 42 #if (defined(_BOOT) && defined(_BOOT_TARGET_amd64)) || \ 43 (!defined(_BOOT) && defined(__amd64)) 44 #define __target_amd64 45 #endif 46 47 #ifdef __target_amd64 48 49 #define IN_HYPERVISOR_VA(va) \ 50 ((va) >= HYPERVISOR_VIRT_START && (va) < HYPERVISOR_VIRT_END) 51 52 #else 53 54 #define IN_HYPERVISOR_VA(va) ((va) >= xen_virt_start) 55 56 /* 57 * Do this to help catch any uses. 58 */ 59 #undef HYPERVISOR_VIRT_START 60 #undef machine_to_phys_mapping 61 62 #endif 63 64 #undef __target_amd64 65 66 typedef uint64_t maddr_t; 67 68 paddr_t ma_to_pa(maddr_t); 69 maddr_t pa_to_ma(paddr_t); 70 #define mfn_to_ma(mfn) ((maddr_t)(mfn) << MMU_PAGESHIFT) 71 72 extern uintptr_t xen_virt_start; 73 extern pfn_t *mfn_to_pfn_mapping; 74 75 #ifndef _BOOT 76 77 /* 78 * On the hypervisor we need: 79 * - a way to map a machine address (ie, not pseudo-physical). 80 * - to relocate initial hypervisor data structures into kernel VA range. 81 * - a way to translate between physical addresses and machine addresses. 82 * - a way to change the machine address behind a physical address. 83 */ 84 typedef ulong_t mfn_t; 85 86 extern mfn_t *mfn_list; 87 extern mfn_t *mfn_list_pages; 88 extern mfn_t *mfn_list_pages_page; 89 extern ulong_t mfn_count; 90 extern mfn_t cached_max_mfn; 91 92 /* 93 * locks for mfn_list[] and machine_to_phys_mapping[] when migration / suspend 94 * events happen 95 */ 96 extern void xen_block_migrate(void); 97 extern void xen_allow_migrate(void); 98 extern void xen_start_migrate(void); 99 extern void xen_end_migrate(void); 100 101 /* 102 * Conversion between machine (hardware) addresses and pseudo-physical 103 * addresses. 104 */ 105 pfn_t mfn_to_pfn(mfn_t); 106 mfn_t pfn_to_mfn(pfn_t); 107 108 struct page; 109 110 void xen_relocate_start_info(void); 111 112 /* 113 * interfaces to create/destroy pfn_t values for devices or foreign memory 114 * 115 * xen_assign_pfn() creates (or looks up) a local pfn value to use for things 116 * like a foreign domain memory mfn or a device mfn. 117 * 118 * xen_release_pfn() destroys the association between a pfn and foreign mfn. 119 */ 120 pfn_t xen_assign_pfn(mfn_t mfn); 121 void xen_release_pfn(pfn_t); 122 uint_t pfn_is_foreign(pfn_t); 123 void reassign_pfn(pfn_t pfn, mfn_t mfn); 124 125 #define MFN_INVALID (-(mfn_t)1) 126 127 #endif /* !_BOOT */ 128 129 #ifdef __cplusplus 130 } 131 #endif 132 133 #endif /* _SYS_XEN_MMU_H */ 134