memory.h

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/* SPDX-License-Identifier: MIT */
 
/******************************************************************************
 * memory.h
 *
 * Memory reservation and information.
 *
 * Permission is hereby granted, free of charge, to any person obtaining a copy
 * of this software and associated documentation files (the "Software"), to
 * deal in the Software without restriction, including without limitation the
 * rights to use, copy, modify, merge, publish, distribute, sublicense, and/or
 * sell copies of the Software, and to permit persons to whom the Software is
 * furnished to do so, subject to the following conditions:
 *
 * The above copyright notice and this permission notice shall be included in
 * all copies or substantial portions of the Software.
 *
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
 * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
 * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
 * DEALINGS IN THE SOFTWARE.
 *
 * Copyright (c) 2005, Keir Fraser <keir@xensource.com>
 */
 
#ifndef __XEN_PUBLIC_MEMORY_H__
#define __XEN_PUBLIC_MEMORY_H__
 
#include "xen.h"
 
#define XENMAPSPACE_shared_info         0       /* shared info page */
#define XENMAPSPACE_grant_table         1       /* grant table page */
#define XENMAPSPACE_gmfn                2       /* GMFN */
 
/* GMFN range, XENMEM_add_to_physmap only.*/
#define XENMAPSPACE_gmfn_range          3
 
/* GMFN from another dom, XENMEM_add_to_physmap_batch only. */
#define XENMAPSPACE_gmfn_foreign        4
 
/*
 * Device mmio region ARM only; the region is mapped in Stage-2 using the
 * Normal Memory Inner/Outer Write-Back Cacheable memory attribute.
 */
#define XENMAPSPACE_dev_mmio            5
 
/*
 * Sets the GPFN at which a particular page appears in the specified guest's
 * physical address space (translated guests only).
 * arg == addr of xen_add_to_physmap_t.
 */
#define XENMEM_add_to_physmap           7
struct xen_add_to_physmap {
        /* Which domain to change the mapping for. */
        domid_t domid;
 
        /* Number of pages to go through for gmfn_range */
        uint16_t size;
 
        unsigned int space; /* => enum phys_map_space */
 
#define XENMAPIDX_grant_table_status 0x80000000
 
        /* Index into space being mapped. */
        xen_ulong_t idx;
 
        /* GPFN in domid where the source mapping page should appear. */
        xen_pfn_t gpfn;
};
typedef struct xen_add_to_physmap xen_add_to_physmap_t;
DEFINE_XEN_GUEST_HANDLE(xen_add_to_physmap_t);
 
#endif /* __XEN_PUBLIC_MEMORY_H__ */