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 */ 95