| /* 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 XENMEM_populate_physmap 6 |
| |
| 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) |
| * XENMEM_claim_pages: |
| * IN: must be zero |
| */ |
| 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); |
| |
| /* A batched version of add_to_physmap. */ |
| #define XENMEM_add_to_physmap_batch 23 |
| struct xen_add_to_physmap_batch { |
| /* IN */ |
| /* Which domain to change the mapping for. */ |
| domid_t domid; |
| uint16_t space; /* => enum phys_map_space */ |
| |
| /* Number of pages to go through */ |
| uint16_t size; |
| |
| #if __XEN_INTERFACE_VERSION__ < 0x00040700 |
| domid_t foreign_domid; /* IFF gmfn_foreign. Should be 0 for other spaces. */ |
| #else |
| union xen_add_to_physmap_batch_extra { |
| domid_t foreign_domid; /* gmfn_foreign */ |
| uint16_t res0; /* All the other spaces. Should be 0 */ |
| } u; |
| #endif |
| |
| /* Indexes into space being mapped. */ |
| XEN_GUEST_HANDLE(xen_ulong_t) idxs; |
| |
| /* GPFN in domid where the source mapping page should appear. */ |
| XEN_GUEST_HANDLE(xen_pfn_t) gpfns; |
| |
| /* OUT */ |
| /* Per index error code. */ |
| XEN_GUEST_HANDLE(int) errs; |
| }; |
| typedef struct xen_add_to_physmap_batch xen_add_to_physmap_batch_t; |
| DEFINE_XEN_GUEST_HANDLE(xen_add_to_physmap_batch_t); |
| |
| |
| #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); |
| |
| /* |
| * Unmaps the page appearing at a particular GPFN from the specified guest's |
| * physical address space (translated guests only). |
| * 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); |
| |
| #endif /* __XEN_PUBLIC_MEMORY_H__ */ |