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-rw-r--r--sys/xen/interface/memory.h312
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diff --git a/sys/xen/interface/memory.h b/sys/xen/interface/memory.h
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-/******************************************************************************
- * 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__
-
-/*
- * Increase or decrease the specified domain's memory reservation. Returns the
- * number of extents successfully allocated or freed.
- * arg == addr of struct xen_memory_reservation.
- */
-#define XENMEM_increase_reservation 0
-#define XENMEM_decrease_reservation 1
-#define XENMEM_populate_physmap 6
-
-#if __XEN_INTERFACE_VERSION__ >= 0x00030209
-/*
- * Maximum # bits addressable by the user of the allocated region (e.g., I/O
- * devices often have a 32-bit limitation even in 64-bit systems). If zero
- * then the user has no addressing restriction. This field is not used by
- * XENMEM_decrease_reservation.
- */
-#define XENMEMF_address_bits(x) (x)
-#define XENMEMF_get_address_bits(x) ((x) & 0xffu)
-/* NUMA node to allocate from. */
-#define XENMEMF_node(x) (((x) + 1) << 8)
-#define XENMEMF_get_node(x) ((((x) >> 8) - 1) & 0xffu)
-#endif
-
-struct xen_memory_reservation {
-
- /*
- * XENMEM_increase_reservation:
- * OUT: MFN (*not* GMFN) bases of extents that were allocated
- * XENMEM_decrease_reservation:
- * IN: GMFN bases of extents to free
- * XENMEM_populate_physmap:
- * IN: GPFN bases of extents to populate with memory
- * OUT: GMFN bases of extents that were allocated
- * (NB. This command also updates the mach_to_phys translation table)
- */
- XEN_GUEST_HANDLE(xen_pfn_t) extent_start;
-
- /* Number of extents, and size/alignment of each (2^extent_order pages). */
- xen_ulong_t nr_extents;
- unsigned int extent_order;
-
-#if __XEN_INTERFACE_VERSION__ >= 0x00030209
- /* XENMEMF flags. */
- unsigned int mem_flags;
-#else
- unsigned int address_bits;
-#endif
-
- /*
- * Domain whose reservation is being changed.
- * Unprivileged domains can specify only DOMID_SELF.
- */
- domid_t domid;
-};
-typedef struct xen_memory_reservation xen_memory_reservation_t;
-DEFINE_XEN_GUEST_HANDLE(xen_memory_reservation_t);
-
-/*
- * An atomic exchange of memory pages. If return code is zero then
- * @out.extent_list provides GMFNs of the newly-allocated memory.
- * Returns zero on complete success, otherwise a negative error code.
- * On complete success then always @nr_exchanged == @in.nr_extents.
- * On partial success @nr_exchanged indicates how much work was done.
- */
-#define XENMEM_exchange 11
-struct xen_memory_exchange {
- /*
- * [IN] Details of memory extents to be exchanged (GMFN bases).
- * Note that @in.address_bits is ignored and unused.
- */
- struct xen_memory_reservation in;
-
- /*
- * [IN/OUT] Details of new memory extents.
- * We require that:
- * 1. @in.domid == @out.domid
- * 2. @in.nr_extents << @in.extent_order ==
- * @out.nr_extents << @out.extent_order
- * 3. @in.extent_start and @out.extent_start lists must not overlap
- * 4. @out.extent_start lists GPFN bases to be populated
- * 5. @out.extent_start is overwritten with allocated GMFN bases
- */
- struct xen_memory_reservation out;
-
- /*
- * [OUT] Number of input extents that were successfully exchanged:
- * 1. The first @nr_exchanged input extents were successfully
- * deallocated.
- * 2. The corresponding first entries in the output extent list correctly
- * indicate the GMFNs that were successfully exchanged.
- * 3. All other input and output extents are untouched.
- * 4. If not all input exents are exchanged then the return code of this
- * command will be non-zero.
- * 5. THIS FIELD MUST BE INITIALISED TO ZERO BY THE CALLER!
- */
- xen_ulong_t nr_exchanged;
-};
-typedef struct xen_memory_exchange xen_memory_exchange_t;
-DEFINE_XEN_GUEST_HANDLE(xen_memory_exchange_t);
-
-/*
- * Returns the maximum machine frame number of mapped RAM in this system.
- * This command always succeeds (it never returns an error code).
- * arg == NULL.
- */
-#define XENMEM_maximum_ram_page 2
-
-/*
- * Returns the current or maximum memory reservation, in pages, of the
- * specified domain (may be DOMID_SELF). Returns -ve errcode on failure.
- * arg == addr of domid_t.
- */
-#define XENMEM_current_reservation 3
-#define XENMEM_maximum_reservation 4
-
-/*
- * Returns the maximum GPFN in use by the guest, or -ve errcode on failure.
- */
-#define XENMEM_maximum_gpfn 14
-
-/*
- * Returns a list of MFN bases of 2MB extents comprising the machine_to_phys
- * mapping table. Architectures which do not have a m2p table do not implement
- * this command.
- * arg == addr of xen_machphys_mfn_list_t.
- */
-#define XENMEM_machphys_mfn_list 5
-struct xen_machphys_mfn_list {
- /*
- * Size of the 'extent_start' array. Fewer entries will be filled if the
- * machphys table is smaller than max_extents * 2MB.
- */
- unsigned int max_extents;
-
- /*
- * Pointer to buffer to fill with list of extent starts. If there are
- * any large discontiguities in the machine address space, 2MB gaps in
- * the machphys table will be represented by an MFN base of zero.
- */
- XEN_GUEST_HANDLE(xen_pfn_t) extent_start;
-
- /*
- * Number of extents written to the above array. This will be smaller
- * than 'max_extents' if the machphys table is smaller than max_e * 2MB.
- */
- unsigned int nr_extents;
-};
-typedef struct xen_machphys_mfn_list xen_machphys_mfn_list_t;
-DEFINE_XEN_GUEST_HANDLE(xen_machphys_mfn_list_t);
-
-/*
- * Returns the location in virtual address space of the machine_to_phys
- * mapping table. Architectures which do not have a m2p table, or which do not
- * map it by default into guest address space, do not implement this command.
- * arg == addr of xen_machphys_mapping_t.
- */
-#define XENMEM_machphys_mapping 12
-struct xen_machphys_mapping {
- xen_ulong_t v_start, v_end; /* Start and end virtual addresses. */
- xen_ulong_t max_mfn; /* Maximum MFN that can be looked up. */
-};
-typedef struct xen_machphys_mapping xen_machphys_mapping_t;
-DEFINE_XEN_GUEST_HANDLE(xen_machphys_mapping_t);
-
-/*
- * Sets the GPFN at which a particular page appears in the specified guest's
- * pseudophysical address space.
- * 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;
-
- /* Source mapping space. */
-#define XENMAPSPACE_shared_info 0 /* shared info page */
-#define XENMAPSPACE_grant_table 1 /* grant table page */
-#define XENMAPSPACE_mfn 2 /* usual MFN */
- unsigned int space;
-
- /* Index into source mapping space. */
- xen_ulong_t idx;
-
- /* GPFN 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);
-
-/*
- * Unmaps the page appearing at a particular GPFN from the specified guest's
- * pseudophysical address space.
- * arg == addr of xen_remove_from_physmap_t.
- */
-#define XENMEM_remove_from_physmap 15
-struct xen_remove_from_physmap {
- /* Which domain to change the mapping for. */
- domid_t domid;
-
- /* GPFN of the current mapping of the page. */
- xen_pfn_t gpfn;
-};
-typedef struct xen_remove_from_physmap xen_remove_from_physmap_t;
-DEFINE_XEN_GUEST_HANDLE(xen_remove_from_physmap_t);
-
-/*
- * Translates a list of domain-specific GPFNs into MFNs. Returns a -ve error
- * code on failure. This call only works for auto-translated guests.
- */
-#define XENMEM_translate_gpfn_list 8
-struct xen_translate_gpfn_list {
- /* Which domain to translate for? */
- domid_t domid;
-
- /* Length of list. */
- xen_ulong_t nr_gpfns;
-
- /* List of GPFNs to translate. */
- XEN_GUEST_HANDLE(xen_pfn_t) gpfn_list;
-
- /*
- * Output list to contain MFN translations. May be the same as the input
- * list (in which case each input GPFN is overwritten with the output MFN).
- */
- XEN_GUEST_HANDLE(xen_pfn_t) mfn_list;
-};
-typedef struct xen_translate_gpfn_list xen_translate_gpfn_list_t;
-DEFINE_XEN_GUEST_HANDLE(xen_translate_gpfn_list_t);
-
-/*
- * Returns the pseudo-physical memory map as it was when the domain
- * was started (specified by XENMEM_set_memory_map).
- * arg == addr of xen_memory_map_t.
- */
-#define XENMEM_memory_map 9
-struct xen_memory_map {
- /*
- * On call the number of entries which can be stored in buffer. On
- * return the number of entries which have been stored in
- * buffer.
- */
- unsigned int nr_entries;
-
- /*
- * Entries in the buffer are in the same format as returned by the
- * BIOS INT 0x15 EAX=0xE820 call.
- */
- XEN_GUEST_HANDLE(void) buffer;
-};
-typedef struct xen_memory_map xen_memory_map_t;
-DEFINE_XEN_GUEST_HANDLE(xen_memory_map_t);
-
-/*
- * Returns the real physical memory map. Passes the same structure as
- * XENMEM_memory_map.
- * arg == addr of xen_memory_map_t.
- */
-#define XENMEM_machine_memory_map 10
-
-/*
- * Set the pseudo-physical memory map of a domain, as returned by
- * XENMEM_memory_map.
- * arg == addr of xen_foreign_memory_map_t.
- */
-#define XENMEM_set_memory_map 13
-struct xen_foreign_memory_map {
- domid_t domid;
- struct xen_memory_map map;
-};
-typedef struct xen_foreign_memory_map xen_foreign_memory_map_t;
-DEFINE_XEN_GUEST_HANDLE(xen_foreign_memory_map_t);
-
-#endif /* __XEN_PUBLIC_MEMORY_H__ */
-
-/*
- * Local variables:
- * mode: C
- * c-set-style: "BSD"
- * c-basic-offset: 4
- * tab-width: 4
- * indent-tabs-mode: nil
- * End:
- */
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