843e19887f64dde75055cf8842fc4db2171eff45johnlev/******************************************************************************
843e19887f64dde75055cf8842fc4db2171eff45johnlev * Memory reservation and information.
843e19887f64dde75055cf8842fc4db2171eff45johnlev * Permission is hereby granted, free of charge, to any person obtaining a copy
843e19887f64dde75055cf8842fc4db2171eff45johnlev * of this software and associated documentation files (the "Software"), to
843e19887f64dde75055cf8842fc4db2171eff45johnlev * deal in the Software without restriction, including without limitation the
843e19887f64dde75055cf8842fc4db2171eff45johnlev * rights to use, copy, modify, merge, publish, distribute, sublicense, and/or
843e19887f64dde75055cf8842fc4db2171eff45johnlev * sell copies of the Software, and to permit persons to whom the Software is
843e19887f64dde75055cf8842fc4db2171eff45johnlev * furnished to do so, subject to the following conditions:
843e19887f64dde75055cf8842fc4db2171eff45johnlev * The above copyright notice and this permission notice shall be included in
843e19887f64dde75055cf8842fc4db2171eff45johnlev * all copies or substantial portions of the Software.
843e19887f64dde75055cf8842fc4db2171eff45johnlev * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
843e19887f64dde75055cf8842fc4db2171eff45johnlev * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
843e19887f64dde75055cf8842fc4db2171eff45johnlev * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
843e19887f64dde75055cf8842fc4db2171eff45johnlev * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
843e19887f64dde75055cf8842fc4db2171eff45johnlev * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
843e19887f64dde75055cf8842fc4db2171eff45johnlev * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
843e19887f64dde75055cf8842fc4db2171eff45johnlev * DEALINGS IN THE SOFTWARE.
843e19887f64dde75055cf8842fc4db2171eff45johnlev * Copyright (c) 2005, Keir Fraser <keir@xensource.com>
843e19887f64dde75055cf8842fc4db2171eff45johnlev * Increase or decrease the specified domain's memory reservation. Returns the
843e19887f64dde75055cf8842fc4db2171eff45johnlev * number of extents successfully allocated or freed.
843e19887f64dde75055cf8842fc4db2171eff45johnlev * arg == addr of struct xen_memory_reservation.
349b53dd4e695e3d833b5380540385145b2d3ae8Stuart Maybee * Maximum # bits addressable by the user of the allocated region (e.g., I/O
349b53dd4e695e3d833b5380540385145b2d3ae8Stuart Maybee * devices often have a 32-bit limitation even in 64-bit systems). If zero
349b53dd4e695e3d833b5380540385145b2d3ae8Stuart Maybee * then the user has no addressing restriction. This field is not used by
349b53dd4e695e3d833b5380540385145b2d3ae8Stuart Maybee * XENMEM_decrease_reservation.
349b53dd4e695e3d833b5380540385145b2d3ae8Stuart Maybee#define XENMEMF_get_address_bits(x) ((x) & 0xffu)
349b53dd4e695e3d833b5380540385145b2d3ae8Stuart Maybee/* NUMA node to allocate from. */
349b53dd4e695e3d833b5380540385145b2d3ae8Stuart Maybee#define XENMEMF_get_node(x) ((((x) >> 8) - 1) & 0xffu)
ad09f8b827db90c9a0093f0b6382803fa64a5fd1Mark Johnson/* Flag to populate physmap with populate-on-demand entries */
843e19887f64dde75055cf8842fc4db2171eff45johnlev * XENMEM_increase_reservation:
843e19887f64dde75055cf8842fc4db2171eff45johnlev * OUT: MFN (*not* GMFN) bases of extents that were allocated
843e19887f64dde75055cf8842fc4db2171eff45johnlev * XENMEM_decrease_reservation:
843e19887f64dde75055cf8842fc4db2171eff45johnlev * IN: GMFN bases of extents to free
843e19887f64dde75055cf8842fc4db2171eff45johnlev * XENMEM_populate_physmap:
843e19887f64dde75055cf8842fc4db2171eff45johnlev * IN: GPFN bases of extents to populate with memory
843e19887f64dde75055cf8842fc4db2171eff45johnlev * OUT: GMFN bases of extents that were allocated
843e19887f64dde75055cf8842fc4db2171eff45johnlev * (NB. This command also updates the mach_to_phys translation table)
843e19887f64dde75055cf8842fc4db2171eff45johnlev /* Number of extents, and size/alignment of each (2^extent_order pages). */
349b53dd4e695e3d833b5380540385145b2d3ae8Stuart Maybee /* XENMEMF flags. */
843e19887f64dde75055cf8842fc4db2171eff45johnlev * Domain whose reservation is being changed.
843e19887f64dde75055cf8842fc4db2171eff45johnlev * Unprivileged domains can specify only DOMID_SELF.
843e19887f64dde75055cf8842fc4db2171eff45johnlevtypedef struct xen_memory_reservation xen_memory_reservation_t;
843e19887f64dde75055cf8842fc4db2171eff45johnlev * An atomic exchange of memory pages. If return code is zero then
843e19887f64dde75055cf8842fc4db2171eff45johnlev * @out.extent_list provides GMFNs of the newly-allocated memory.
843e19887f64dde75055cf8842fc4db2171eff45johnlev * Returns zero on complete success, otherwise a negative error code.
843e19887f64dde75055cf8842fc4db2171eff45johnlev * On complete success then always @nr_exchanged == @in.nr_extents.
843e19887f64dde75055cf8842fc4db2171eff45johnlev * On partial success @nr_exchanged indicates how much work was done.
843e19887f64dde75055cf8842fc4db2171eff45johnlev * [IN] Details of memory extents to be exchanged (GMFN bases).
843e19887f64dde75055cf8842fc4db2171eff45johnlev * Note that @in.address_bits is ignored and unused.
843e19887f64dde75055cf8842fc4db2171eff45johnlev * [IN/OUT] Details of new memory extents.
843e19887f64dde75055cf8842fc4db2171eff45johnlev * We require that:
843e19887f64dde75055cf8842fc4db2171eff45johnlev * 1. @in.domid == @out.domid
843e19887f64dde75055cf8842fc4db2171eff45johnlev * 2. @in.nr_extents << @in.extent_order ==
843e19887f64dde75055cf8842fc4db2171eff45johnlev * @out.nr_extents << @out.extent_order
843e19887f64dde75055cf8842fc4db2171eff45johnlev * 3. @in.extent_start and @out.extent_start lists must not overlap
843e19887f64dde75055cf8842fc4db2171eff45johnlev * 4. @out.extent_start lists GPFN bases to be populated
843e19887f64dde75055cf8842fc4db2171eff45johnlev * 5. @out.extent_start is overwritten with allocated GMFN bases
843e19887f64dde75055cf8842fc4db2171eff45johnlev * [OUT] Number of input extents that were successfully exchanged:
843e19887f64dde75055cf8842fc4db2171eff45johnlev * 1. The first @nr_exchanged input extents were successfully
843e19887f64dde75055cf8842fc4db2171eff45johnlev * deallocated.
843e19887f64dde75055cf8842fc4db2171eff45johnlev * 2. The corresponding first entries in the output extent list correctly
843e19887f64dde75055cf8842fc4db2171eff45johnlev * indicate the GMFNs that were successfully exchanged.
843e19887f64dde75055cf8842fc4db2171eff45johnlev * 3. All other input and output extents are untouched.
843e19887f64dde75055cf8842fc4db2171eff45johnlev * 4. If not all input exents are exchanged then the return code of this
843e19887f64dde75055cf8842fc4db2171eff45johnlev * command will be non-zero.
843e19887f64dde75055cf8842fc4db2171eff45johnlev * 5. THIS FIELD MUST BE INITIALISED TO ZERO BY THE CALLER!
843e19887f64dde75055cf8842fc4db2171eff45johnlevtypedef struct xen_memory_exchange xen_memory_exchange_t;
843e19887f64dde75055cf8842fc4db2171eff45johnlev * Returns the maximum machine frame number of mapped RAM in this system.
843e19887f64dde75055cf8842fc4db2171eff45johnlev * This command always succeeds (it never returns an error code).
843e19887f64dde75055cf8842fc4db2171eff45johnlev * arg == NULL.
843e19887f64dde75055cf8842fc4db2171eff45johnlev * Returns the current or maximum memory reservation, in pages, of the
843e19887f64dde75055cf8842fc4db2171eff45johnlev * specified domain (may be DOMID_SELF). Returns -ve errcode on failure.
843e19887f64dde75055cf8842fc4db2171eff45johnlev * arg == addr of domid_t.
a576ab5b6e08c47732b3dedca9eaa8a8cbb85720rab * Returns the maximum GPFN in use by the guest, or -ve errcode on failure.
843e19887f64dde75055cf8842fc4db2171eff45johnlev * Returns a list of MFN bases of 2MB extents comprising the machine_to_phys
843e19887f64dde75055cf8842fc4db2171eff45johnlev * mapping table. Architectures which do not have a m2p table do not implement
843e19887f64dde75055cf8842fc4db2171eff45johnlev * this command.
843e19887f64dde75055cf8842fc4db2171eff45johnlev * arg == addr of xen_machphys_mfn_list_t.
843e19887f64dde75055cf8842fc4db2171eff45johnlev * Size of the 'extent_start' array. Fewer entries will be filled if the
843e19887f64dde75055cf8842fc4db2171eff45johnlev * machphys table is smaller than max_extents * 2MB.
843e19887f64dde75055cf8842fc4db2171eff45johnlev * Pointer to buffer to fill with list of extent starts. If there are
843e19887f64dde75055cf8842fc4db2171eff45johnlev * any large discontiguities in the machine address space, 2MB gaps in
843e19887f64dde75055cf8842fc4db2171eff45johnlev * the machphys table will be represented by an MFN base of zero.
843e19887f64dde75055cf8842fc4db2171eff45johnlev * Number of extents written to the above array. This will be smaller
843e19887f64dde75055cf8842fc4db2171eff45johnlev * than 'max_extents' if the machphys table is smaller than max_e * 2MB.
843e19887f64dde75055cf8842fc4db2171eff45johnlevtypedef struct xen_machphys_mfn_list xen_machphys_mfn_list_t;
843e19887f64dde75055cf8842fc4db2171eff45johnlev * Returns the location in virtual address space of the machine_to_phys
843e19887f64dde75055cf8842fc4db2171eff45johnlev * mapping table. Architectures which do not have a m2p table, or which do not
843e19887f64dde75055cf8842fc4db2171eff45johnlev * map it by default into guest address space, do not implement this command.
843e19887f64dde75055cf8842fc4db2171eff45johnlev * arg == addr of xen_machphys_mapping_t.
843e19887f64dde75055cf8842fc4db2171eff45johnlev xen_ulong_t v_start, v_end; /* Start and end virtual addresses. */
843e19887f64dde75055cf8842fc4db2171eff45johnlev xen_ulong_t max_mfn; /* Maximum MFN that can be looked up. */
843e19887f64dde75055cf8842fc4db2171eff45johnlevtypedef struct xen_machphys_mapping xen_machphys_mapping_t;
843e19887f64dde75055cf8842fc4db2171eff45johnlev * Sets the GPFN at which a particular page appears in the specified guest's
843e19887f64dde75055cf8842fc4db2171eff45johnlev * pseudophysical address space.
843e19887f64dde75055cf8842fc4db2171eff45johnlev * arg == addr of xen_add_to_physmap_t.
843e19887f64dde75055cf8842fc4db2171eff45johnlev /* Which domain to change the mapping for. */
843e19887f64dde75055cf8842fc4db2171eff45johnlev /* Source mapping space. */
843e19887f64dde75055cf8842fc4db2171eff45johnlev#define XENMAPSPACE_shared_info 0 /* shared info page */
843e19887f64dde75055cf8842fc4db2171eff45johnlev#define XENMAPSPACE_grant_table 1 /* grant table page */
843e19887f64dde75055cf8842fc4db2171eff45johnlev /* Index into source mapping space. */
843e19887f64dde75055cf8842fc4db2171eff45johnlev /* GPFN where the source mapping page should appear. */
843e19887f64dde75055cf8842fc4db2171eff45johnlevtypedef struct xen_add_to_physmap xen_add_to_physmap_t;
ad09f8b827db90c9a0093f0b6382803fa64a5fd1Mark Johnson/*** REMOVED ***/
ad09f8b827db90c9a0093f0b6382803fa64a5fd1Mark Johnson/*#define XENMEM_translate_gpfn_list 8*/
843e19887f64dde75055cf8842fc4db2171eff45johnlev * Returns the pseudo-physical memory map as it was when the domain
843e19887f64dde75055cf8842fc4db2171eff45johnlev * was started (specified by XENMEM_set_memory_map).
843e19887f64dde75055cf8842fc4db2171eff45johnlev * arg == addr of xen_memory_map_t.
843e19887f64dde75055cf8842fc4db2171eff45johnlev * On call the number of entries which can be stored in buffer. On
843e19887f64dde75055cf8842fc4db2171eff45johnlev * return the number of entries which have been stored in
843e19887f64dde75055cf8842fc4db2171eff45johnlev * Entries in the buffer are in the same format as returned by the
843e19887f64dde75055cf8842fc4db2171eff45johnlev * BIOS INT 0x15 EAX=0xE820 call.
843e19887f64dde75055cf8842fc4db2171eff45johnlev * Returns the real physical memory map. Passes the same structure as
843e19887f64dde75055cf8842fc4db2171eff45johnlev * XENMEM_memory_map.
843e19887f64dde75055cf8842fc4db2171eff45johnlev * arg == addr of xen_memory_map_t.
843e19887f64dde75055cf8842fc4db2171eff45johnlev * Set the pseudo-physical memory map of a domain, as returned by
843e19887f64dde75055cf8842fc4db2171eff45johnlev * XENMEM_memory_map.
843e19887f64dde75055cf8842fc4db2171eff45johnlev * arg == addr of xen_foreign_memory_map_t.
843e19887f64dde75055cf8842fc4db2171eff45johnlevtypedef struct xen_foreign_memory_map xen_foreign_memory_map_t;
843e19887f64dde75055cf8842fc4db2171eff45johnlev#endif /* __XEN_PUBLIC_MEMORY_H__ */
843e19887f64dde75055cf8842fc4db2171eff45johnlev * Local variables:
843e19887f64dde75055cf8842fc4db2171eff45johnlev * c-set-style: "BSD"
843e19887f64dde75055cf8842fc4db2171eff45johnlev * c-basic-offset: 4
843e19887f64dde75055cf8842fc4db2171eff45johnlev * tab-width: 4
843e19887f64dde75055cf8842fc4db2171eff45johnlev * indent-tabs-mode: nil