OvmfPkg/Include/IndustryStandard/Xen/memory.h

   1 /******************************************************************************
   2  * memory.h
   3  *
   4  * Memory reservation and information.
   5  *
   6  * Permission is hereby granted, free of charge, to any person obtaining a copy
   7  * of this software and associated documentation files (the "Software"), to
   8  * deal in the Software without restriction, including without limitation the
   9  * rights to use, copy, modify, merge, publish, distribute, sublicense, and/or
  10  * sell copies of the Software, and to permit persons to whom the Software is
  11  * furnished to do so, subject to the following conditions:
  12  *
  13  * The above copyright notice and this permission notice shall be included in
  14  * all copies or substantial portions of the Software.
  15  *
  16  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
  17  * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
  18  * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
  19  * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
  20  * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
  21  * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
  22  * DEALINGS IN THE SOFTWARE.
  23  *
  24  * Copyright (c) 2005, Keir Fraser <keir@xensource.com>
  25  */
  26
  27 #ifndef __XEN_PUBLIC_MEMORY_H__
  28 #define __XEN_PUBLIC_MEMORY_H__
  29
  30 #include "xen.h"
  31
  32 /* Source mapping space. */
  33 /* ` enum phys_map_space { */
  34 #define XENMAPSPACE_shared_info  0 /* shared info page */
  35 #define XENMAPSPACE_grant_table  1 /* grant table page */
  36 #define XENMAPSPACE_gmfn         2 /* GMFN */
  37 #define XENMAPSPACE_gmfn_range   3 /* GMFN range, XENMEM_add_to_physmap only. */
  38 #define XENMAPSPACE_gmfn_foreign 4 /* GMFN from another dom,
  39                                     * XENMEM_add_to_physmap_batch only. */
  40 /* ` } */
  41
  42 /*
  43  * Sets the GPFN at which a particular page appears in the specified guest's
  44  * pseudophysical address space.
  45  * arg == addr of xen_add_to_physmap_t.
  46  */
  47 #define XENMEM_add_to_physmap      7
  48 struct xen_add_to_physmap {
  49     /* Which domain to change the mapping for. */
  50     domid_t domid;
  51
  52     /* Number of pages to go through for gmfn_range */
  53     UINT16    size;
  54
  55     UINT32 space; /* => enum phys_map_space */
  56
  57 #define XENMAPIDX_grant_table_status 0x80000000
  58
  59     /* Index into space being mapped. */
  60     xen_ulong_t idx;
  61
  62     /* GPFN in domid where the source mapping page should appear. */
  63     xen_pfn_t     gpfn;
  64 };
  65 typedef struct xen_add_to_physmap xen_add_to_physmap_t;
  66 DEFINE_XEN_GUEST_HANDLE(xen_add_to_physmap_t);
  67
  68 /*
  69  * Unmaps the page appearing at a particular GPFN from the specified guest's
  70  * pseudophysical address space.
  71  * arg == addr of xen_remove_from_physmap_t.
  72  */
  73 #define XENMEM_remove_from_physmap      15
  74 struct xen_remove_from_physmap {
  75     /* Which domain to change the mapping for. */
  76     domid_t domid;
  77
  78     /* GPFN of the current mapping of the page. */
  79     xen_pfn_t     gpfn;
  80 };
  81 typedef struct xen_remove_from_physmap xen_remove_from_physmap_t;
  82 DEFINE_XEN_GUEST_HANDLE(xen_remove_from_physmap_t);
  83
  84 #endif /* __XEN_PUBLIC_MEMORY_H__ */
  85
  86 /*
  87  * Local variables:
  88  * mode: C
  89  * c-file-style: "BSD"
  90  * c-basic-offset: 4
  91  * tab-width: 4
  92  * indent-tabs-mode: nil
  93  * End:
  94  */