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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/xenvar.h>
void xen_invlpg(vm_offset_t);
void xen_queue_pt_update(vm_paddr_t, vm_paddr_t);
void xen_pt_switch(uint32_t);
void xen_set_ldt(unsigned long, unsigned long);
void xen_tlb_flush(void);
void xen_pgd_pin(unsigned long);
void xen_pgd_unpin(unsigned long);
void xen_pt_pin(unsigned long);
void xen_pt_unpin(unsigned long);
void xen_flush_queue(void);
void pmap_ref(pt_entry_t *pte, unsigned long ma);
#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 WRITABLE_PAGETABLES
#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 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, vm_paddr_t *ptr, vm_paddr_t val, int type);
#define PT_GET(_ptp) \
(pmap_valid_entry(*(_ptp)) ? xpmap_mtop(*(_ptp)) : *(_ptp))
#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((pt_entry_t *)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((pt_entry_t *)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((pt_entry_t *)vtomach(_ptp), 0); \
if (sync || ALWAYS_SYNC) \
xen_flush_queue(); \
} 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)
#endif
#define PT_SET_MA(_va, _ma) \
HYPERVISOR_update_va_mapping(((unsigned long)_va), \
((unsigned long)_ma), \
UVMF_INVLPG| UVMF_LOCAL)\
#define PT_UPDATES_FLUSH() do { \
xen_flush_queue(); \
} while (/*CONSTCOND*/0)
static __inline uint32_t
xpmap_mtop(uint32_t mpa)
{
return (((xen_machine_phys[(mpa >> PAGE_SHIFT)]) << PAGE_SHIFT)
| (mpa & ~PG_FRAME));
}
static __inline vm_paddr_t
xpmap_ptom(uint32_t ppa)
{
return phystomach(ppa) | (ppa & ~PG_FRAME);
}
#endif /* _XEN_XENPMAP_H_ */
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