sys/arch/xen/include/xenpmap.h

   1 /*      $NetBSD: xenpmap.h,v 1.23 2009/07/29 12:02:06 cegger 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_ */