1 /* SPDX-License-Identifier: Apache-2.0 */ 2 /* 3 * Copyright (c) 2023 EPAM Systems 4 */ 5 6 #include <zephyr/kernel.h> 7 #include <zephyr/xen/public/memory.h> 8 #include <zephyr/xen/public/xen.h> 9 10 /** 11 * Add mapping for specified page frame in Xen domain physmap. 12 * 13 * @param domid domain id, where mapping will be added. For unprivileged should 14 * be DOMID_SELF. 15 * @param idx index into space being mapped. 16 * @param space XENMAPSPACE_* mapping space identifier. 17 * @param gpfn page frame where the source mapping page should appear. 18 * @return zero on success, negative errno on error. 19 */ 20 int xendom_add_to_physmap(int domid, unsigned long idx, unsigned int space, 21 xen_pfn_t gpfn); 22 23 /** 24 * Add mapping for specified set of page frames to Xen domain physmap. 25 * 26 * @param domid domain id, where mapping will be added. For unprivileged 27 * should be DOMID_SELF. 28 * @param foreign_domid for gmfn_foreign - domain id, whose pages being mapped, 29 * 0 for other. 30 * @param space XENMAPSPACE_* mapping space identifier. 31 * @param size number of page frames being mapped. 32 * @param idxs array of indexes into space being mapped. 33 * @param gpfns array of page frames where the mapping should appear. 34 * @param errs array of per-index error codes. 35 * @return zero on success, negative errno on error. 36 */ 37 int xendom_add_to_physmap_batch(int domid, int foreign_domid, 38 unsigned int space, unsigned int size, 39 xen_ulong_t *idxs, xen_pfn_t *gpfns, int *errs); 40 41 /** 42 * Removes page frame from Xen domain physmap. 43 * 44 * @param domid domain id, whose page is going to be removed. For unprivileged 45 * should be DOMID_SELF. 46 * @param gpfn page frame number, that needs to be removed 47 * @return zero on success, negative errno on error. 48 */ 49 int xendom_remove_from_physmap(int domid, xen_pfn_t gpfn); 50 51 /** 52 * Populate specified Xen domain page frames with memory. 53 * 54 * @param domid domain id, where mapping will be added. For unprivileged 55 * should be DOMID_SELF. 56 * @param extent_order size/alignment of each extent (size is 2^extent_order), 57 * e.g. 0 for 4K extents, 9 for 2M etc. 58 * @param nr_extents number of page frames being populated. 59 * @param mem_flags N/A, should be 0 for Arm. 60 * @param extent_start page frame bases of extents to populate with memory. 61 * @return number of populated frames success, negative errno on 62 * error. 63 */ 64 int xendom_populate_physmap(int domid, unsigned int extent_order, 65 unsigned int nr_extents, unsigned int mem_flags, 66 xen_pfn_t *extent_start); 67
