3942e3ccff
Add wrapper functions for Xen memory managment hypercall. They can be used for unprivilaged Zephyr guest initialization and for domain management, when Zephyr is used as Xen Domain 0. Signed-off-by: Dmytro Firsov <dmytro_firsov@epam.com>
67 lines
2.4 KiB
C
67 lines
2.4 KiB
C
/* SPDX-License-Identifier: Apache-2.0 */
|
|
/*
|
|
* Copyright (c) 2023 EPAM Systems
|
|
*/
|
|
|
|
#include <zephyr/kernel.h>
|
|
#include <zephyr/xen/public/memory.h>
|
|
#include <zephyr/xen/public/xen.h>
|
|
|
|
/**
|
|
* Add mapping for specified page frame in Xen domain physmap.
|
|
*
|
|
* @param domid domain id, where mapping will be added. For unprivileged should
|
|
* be DOMID_SELF.
|
|
* @param idx index into space being mapped.
|
|
* @param space XENMAPSPACE_* mapping space identifier.
|
|
* @param gpfn page frame where the source mapping page should appear.
|
|
* @return zero on success, negative errno on error.
|
|
*/
|
|
int xendom_add_to_physmap(int domid, unsigned long idx, unsigned int space,
|
|
xen_pfn_t gpfn);
|
|
|
|
/**
|
|
* Add mapping for specified set of page frames to Xen domain physmap.
|
|
*
|
|
* @param domid domain id, where mapping will be added. For unprivileged
|
|
* should be DOMID_SELF.
|
|
* @param foreign_domid for gmfn_foreign - domain id, whose pages being mapped,
|
|
* 0 for other.
|
|
* @param space XENMAPSPACE_* mapping space identifier.
|
|
* @param size number of page frames being mapped.
|
|
* @param idxs array of indexes into space being mapped.
|
|
* @param gpfns array of page frames where the mapping should appear.
|
|
* @param errs array of per-index error codes.
|
|
* @return zero on success, negative errno on error.
|
|
*/
|
|
int xendom_add_to_physmap_batch(int domid, int foreign_domid,
|
|
unsigned int space, unsigned int size,
|
|
xen_ulong_t *idxs, xen_pfn_t *gpfns, int *errs);
|
|
|
|
/**
|
|
* Removes page frame from Xen domain physmap.
|
|
*
|
|
* @param domid domain id, whose page is going to be removed. For unprivileged
|
|
* should be DOMID_SELF.
|
|
* @param gpfn page frame number, that needs to be removed
|
|
* @return zero on success, negative errno on error.
|
|
*/
|
|
int xendom_remove_from_physmap(int domid, xen_pfn_t gpfn);
|
|
|
|
/**
|
|
* Populate specified Xen domain page frames with memory.
|
|
*
|
|
* @param domid domain id, where mapping will be added. For unprivileged
|
|
* should be DOMID_SELF.
|
|
* @param extent_order size/alignment of each extent (size is 2^extent_order),
|
|
* e.g. 0 for 4K extents, 9 for 2M etc.
|
|
* @param nr_extents number of page frames being populated.
|
|
* @param mem_flags N/A, should be 0 for Arm.
|
|
* @param extent_start page frame bases of extents to populate with memory.
|
|
* @return number of populated frames success, negative errno on
|
|
* error.
|
|
*/
|
|
int xendom_populate_physmap(int domid, unsigned int extent_order,
|
|
unsigned int nr_extents, unsigned int mem_flags,
|
|
xen_pfn_t *extent_start);
|