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/*
*
* Copyright (c) 2004 Christian Limpach.
* Copyright (c) 2004,2005 Kip Macy
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. All advertising materials mentioning features or use of this software
* must display the following acknowledgement:
* This product includes software developed by Christian Limpach.
* 4. The name of the author may not be used to endorse or promote products
* derived from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#ifndef _XEN_XENPMAP_H_
#define _XEN_XENPMAP_H_
#include <machine/xen/features.h>
void _xen_queue_pt_update(vm_paddr_t, vm_paddr_t, char *, int);
void xen_pt_switch(vm_paddr_t);
void xen_set_ldt(vm_paddr_t, unsigned long);
void xen_pgdpt_pin(vm_paddr_t);
void xen_pgd_pin(vm_paddr_t);
void xen_pgd_unpin(vm_paddr_t);
void xen_pt_pin(vm_paddr_t);
void xen_pt_unpin(vm_paddr_t);
void xen_flush_queue(void);
void xen_check_queue(void);
#if 0
void pmap_ref(pt_entry_t *pte, vm_paddr_t ma);
#endif
#ifdef INVARIANTS
#define xen_queue_pt_update(a, b) _xen_queue_pt_update((a), (b), __FILE__, __LINE__)
#else
#define xen_queue_pt_update(a, b) _xen_queue_pt_update((a), (b), NULL, 0)
#endif
#ifdef PMAP_DEBUG
#define PMAP_REF pmap_ref
#define PMAP_DEC_REF_PAGE pmap_dec_ref_page
#define PMAP_MARK_PRIV pmap_mark_privileged
#define PMAP_MARK_UNPRIV pmap_mark_unprivileged
#else
#define PMAP_MARK_PRIV(a)
#define PMAP_MARK_UNPRIV(a)
#define PMAP_REF(a, b)
#define PMAP_DEC_REF_PAGE(a)
#endif
#define ALWAYS_SYNC 0
#ifdef PT_DEBUG
#define PT_LOG() printk("WP PT_SET %s:%d\n", __FILE__, __LINE__)
#else
#define PT_LOG()
#endif
#define INVALID_P2M_ENTRY (~0UL)
#define pmap_valid_entry(E) ((E) & PG_V) /* is PDE or PTE valid? */
#define SH_PD_SET_VA 1
#define SH_PD_SET_VA_MA 2
#define SH_PD_SET_VA_CLEAR 3
struct pmap;
void pd_set(struct pmap *pmap, int ptepindex, vm_paddr_t val, int type);
#ifdef notyet
static vm_paddr_t
vptetomachpte(vm_paddr_t *pte)
{
vm_offset_t offset, ppte;
vm_paddr_t pgoffset, retval, *pdir_shadow_ptr;
int pgindex;
ppte = (vm_offset_t)pte;
pgoffset = (ppte & PAGE_MASK);
offset = ppte - (vm_offset_t)PTmap;
pgindex = ppte >> PDRSHIFT;
pdir_shadow_ptr = (vm_paddr_t *)PCPU_GET(pdir_shadow);
retval = (pdir_shadow_ptr[pgindex] & ~PAGE_MASK) + pgoffset;
return (retval);
}
#endif
#define PT_GET(_ptp) \
(pmap_valid_entry(*(_ptp)) ? xpmap_mtop(*(_ptp)) : (0))
#ifdef WRITABLE_PAGETABLES
#define PT_SET_VA(_ptp,_npte,sync) do { \
PMAP_REF((_ptp), xpmap_ptom(_npte)); \
PT_LOG(); \
*(_ptp) = xpmap_ptom((_npte)); \
} while (/*CONSTCOND*/0)
#define PT_SET_VA_MA(_ptp,_npte,sync) do { \
PMAP_REF((_ptp), (_npte)); \
PT_LOG(); \
*(_ptp) = (_npte); \
} while (/*CONSTCOND*/0)
#define PT_CLEAR_VA(_ptp, sync) do { \
PMAP_REF((pt_entry_t *)(_ptp), 0); \
PT_LOG(); \
*(_ptp) = 0; \
} while (/*CONSTCOND*/0)
#define PD_SET_VA(_pmap, _ptp, _npte, sync) do { \
PMAP_REF((_ptp), xpmap_ptom(_npte)); \
pd_set((_pmap),(_ptp),(_npte), SH_PD_SET_VA); \
if (sync || ALWAYS_SYNC) xen_flush_queue(); \
} while (/*CONSTCOND*/0)
#define PD_SET_VA_MA(_pmap, _ptp, _npte, sync) do { \
PMAP_REF((_ptp), (_npte)); \
pd_set((_pmap),(_ptp),(_npte), SH_PD_SET_VA_MA); \
if (sync || ALWAYS_SYNC) xen_flush_queue(); \
} while (/*CONSTCOND*/0)
#define PD_CLEAR_VA(_pmap, _ptp, sync) do { \
PMAP_REF((pt_entry_t *)(_ptp), 0); \
pd_set((_pmap),(_ptp), 0, SH_PD_SET_VA_CLEAR); \
if (sync || ALWAYS_SYNC) xen_flush_queue(); \
} while (/*CONSTCOND*/0)
#else /* !WRITABLE_PAGETABLES */
#define PT_SET_VA(_ptp,_npte,sync) do { \
PMAP_REF((_ptp), xpmap_ptom(_npte)); \
xen_queue_pt_update(vtomach(_ptp), \
xpmap_ptom(_npte)); \
if (sync || ALWAYS_SYNC) xen_flush_queue(); \
} while (/*CONSTCOND*/0)
#define PT_SET_VA_MA(_ptp,_npte,sync) do { \
PMAP_REF((_ptp), (_npte)); \
xen_queue_pt_update(vtomach(_ptp), _npte); \
if (sync || ALWAYS_SYNC) xen_flush_queue(); \
} while (/*CONSTCOND*/0)
#define PT_CLEAR_VA(_ptp, sync) do { \
PMAP_REF((pt_entry_t *)(_ptp), 0); \
xen_queue_pt_update(vtomach(_ptp), 0); \
if (sync || ALWAYS_SYNC) \
xen_flush_queue(); \
} while (/*CONSTCOND*/0)
#define PD_SET_VA(_pmap, _ptepindex,_npte,sync) do { \
PMAP_REF((_ptp), xpmap_ptom(_npte)); \
pd_set((_pmap),(_ptepindex),(_npte), SH_PD_SET_VA); \
if (sync || ALWAYS_SYNC) xen_flush_queue(); \
} while (/*CONSTCOND*/0)
#define PD_SET_VA_MA(_pmap, _ptepindex,_npte,sync) do { \
PMAP_REF((_ptp), (_npte)); \
pd_set((_pmap),(_ptepindex),(_npte), SH_PD_SET_VA_MA); \
if (sync || ALWAYS_SYNC) xen_flush_queue(); \
} while (/*CONSTCOND*/0)
#define PD_CLEAR_VA(_pmap, _ptepindex, sync) do { \
PMAP_REF((pt_entry_t *)(_ptp), 0); \
pd_set((_pmap),(_ptepindex), 0, SH_PD_SET_VA_CLEAR); \
if (sync || ALWAYS_SYNC) xen_flush_queue(); \
} while (/*CONSTCOND*/0)
#endif
#define PT_SET_MA(_va, _ma) \
do { \
PANIC_IF(HYPERVISOR_update_va_mapping(((unsigned long)(_va)),\
(_ma), \
UVMF_INVLPG| UVMF_ALL) < 0); \
} while (/*CONSTCOND*/0)
#define PT_UPDATES_FLUSH() do { \
xen_flush_queue(); \
} while (/*CONSTCOND*/0)
static __inline vm_paddr_t
xpmap_mtop(vm_paddr_t mpa)
{
vm_paddr_t tmp = (mpa & PG_FRAME);
return machtophys(tmp) | (mpa & ~PG_FRAME);
}
static __inline vm_paddr_t
xpmap_ptom(vm_paddr_t ppa)
{
vm_paddr_t tmp = (ppa & PG_FRAME);
return phystomach(tmp) | (ppa & ~PG_FRAME);
}
static __inline void
set_phys_to_machine(unsigned long pfn, unsigned long mfn)
{
#ifdef notyet
PANIC_IF(max_mapnr && pfn >= max_mapnr);
#endif
if (xen_feature(XENFEAT_auto_translated_physmap)) {
#ifdef notyet
PANIC_IF((pfn != mfn && mfn != INVALID_P2M_ENTRY));
#endif
return;
}
xen_phys_machine[pfn] = mfn;
}
#endif /* _XEN_XENPMAP_H_ */