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/*
* CDDL HEADER START
*
* The contents of this file are subject to the terms of the
* Common Development and Distribution License (the "License").
* You may not use this file except in compliance with the License.
*
* You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
* or http://www.opensolaris.org/os/licensing.
* See the License for the specific language governing permissions
* and limitations under the License.
*
* When distributing Covered Code, include this CDDL HEADER in each
* file and include the License file at usr/src/OPENSOLARIS.LICENSE.
* If applicable, add the following below this CDDL HEADER, with the
* fields enclosed by brackets "[]" replaced with your own identifying
* information: Portions Copyright [yyyy] [name of copyright owner]
*
* CDDL HEADER END
*/
/*
* Copyright 2009 Sun Microsystems, Inc. All rights reserved.
* Use is subject to license terms.
*/
#ifndef _SYS_XEN_MMU_H
#define _SYS_XEN_MMU_H
#ifdef __cplusplus
extern "C" {
#endif
/*
* Platform-dependent MMU routines and types for the hypervisor.
*
* WARNING: this header file is used by both dboot and i86pc, so don't go using
* normal kernel headers.
*/
#if (defined(_BOOT) && defined(_BOOT_TARGET_amd64)) || \
(!defined(_BOOT) && defined(__amd64))
#define __target_amd64
#endif
typedef uint64_t maddr_t;
#define mfn_to_ma(mfn) ((maddr_t)(mfn) << MMU_PAGESHIFT)
#ifdef __xpv
#ifdef __target_amd64
#define IN_HYPERVISOR_VA(va) \
((va) >= HYPERVISOR_VIRT_START && (va) < HYPERVISOR_VIRT_END)
#else /* __target_amd64 */
#define IN_HYPERVISOR_VA(va) ((va) >= xen_virt_start)
/*
* Do this to help catch any uses.
*/
#undef HYPERVISOR_VIRT_START
#undef machine_to_phys_mapping
#endif /* __target_amd64 */
#undef __target_amd64
paddr_t ma_to_pa(maddr_t);
maddr_t pa_to_ma(paddr_t);
#endif /* __xpv */
extern uintptr_t xen_virt_start;
extern pfn_t *mfn_to_pfn_mapping;
#ifndef _BOOT
/*
* On the hypervisor we need:
* - a way to map a machine address (ie, not pseudo-physical).
* - to relocate initial hypervisor data structures into kernel VA range.
* - a way to translate between physical addresses and machine addresses.
* - a way to change the machine address behind a physical address.
*/
typedef ulong_t mfn_t;
extern mfn_t *mfn_list;
extern mfn_t *mfn_list_pages;
extern mfn_t *mfn_list_pages_page;
extern ulong_t mfn_count;
extern mfn_t cached_max_mfn;
/*
* locks for mfn_list[] and machine_to_phys_mapping[] when migration / suspend
* events happen
*/
extern void xen_block_migrate(void);
extern void xen_allow_migrate(void);
extern void xen_start_migrate(void);
extern void xen_end_migrate(void);
/*
* Conversion between machine (hardware) addresses and pseudo-physical
* addresses.
*/
#ifdef __xpv
pfn_t mfn_to_pfn(mfn_t);
mfn_t pfn_to_mfn(pfn_t);
#endif
struct page;
void xen_relocate_start_info(void);
/*
* interfaces to create/destroy pfn_t values for devices or foreign memory
*
* xen_assign_pfn() creates (or looks up) a local pfn value to use for things
* like a foreign domain memory mfn or a device mfn.
*
* xen_release_pfn() destroys the association between a pfn and foreign mfn.
*/
pfn_t xen_assign_pfn(mfn_t mfn);
void xen_release_pfn(pfn_t);
uint_t pfn_is_foreign(pfn_t);
void reassign_pfn(pfn_t pfn, mfn_t mfn);
#define MFN_INVALID (-(mfn_t)1)
#endif /* !_BOOT */
#ifdef __cplusplus
}
#endif
#endif /* _SYS_XEN_MMU_H */
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