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xenpmap.h revision 1.18 
      1 /*	$NetBSD: xenpmap.h,v 1.18 2008/01/11 20:00:42 bouyer Exp $	*/
      2 
      3 /*
      4  *
      5  * Copyright (c) 2004 Christian Limpach.
      6  * All rights reserved.
      7  *
      8  * Redistribution and use in source and binary forms, with or without
      9  * modification, are permitted provided that the following conditions
     10  * are met:
     11  * 1. Redistributions of source code must retain the above copyright
     12  *    notice, this list of conditions and the following disclaimer.
     13  * 2. Redistributions in binary form must reproduce the above copyright
     14  *    notice, this list of conditions and the following disclaimer in the
     15  *    documentation and/or other materials provided with the distribution.
     16  * 3. All advertising materials mentioning features or use of this software
     17  *    must display the following acknowledgement:
     18  *      This product includes software developed by Christian Limpach.
     19  * 4. The name of the author may not be used to endorse or promote products
     20  *    derived from this software without specific prior written permission.
     21  *
     22  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
     23  * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
     24  * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
     25  * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
     26  * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
     27  * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
     28  * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
     29  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
     30  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
     31  * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
     32  */
     33 
     34 
     35 #ifndef _XEN_XENPMAP_H_
     36 #define _XEN_XENPMAP_H_
     37 
     38 #define	INVALID_P2M_ENTRY	(~0UL)
     39 
     40 void xpq_queue_machphys_update(paddr_t, paddr_t);
     41 void xpq_queue_invlpg(vaddr_t);
     42 void xpq_queue_pde_update(pd_entry_t *, pd_entry_t);
     43 void xpq_queue_pte_update(pt_entry_t *, pt_entry_t);
     44 void xpq_queue_pt_switch(paddr_t);
     45 void xpq_flush_queue(void);
     46 void xpq_queue_set_ldt(vaddr_t, uint32_t);
     47 void xpq_queue_tlb_flush(void);
     48 void xpq_queue_pin_table(paddr_t);
     49 void xpq_queue_unpin_table(paddr_t);
     50 int  xpq_update_foreign(pt_entry_t *, pt_entry_t, int);
     51 
     52 extern paddr_t *xpmap_phys_to_machine_mapping;
     53 
     54 /*
     55  * On Xen-2, the start of the day virual memory starts at KERNTEXTOFF
     56  * (0xc0100000). On Xen-3 for domain0 it starts at KERNBASE (0xc0000000).
     57  * So the offset between physical and virtual address is different on
     58  * Xen-2 and Xen-3 for domain0.
     59  * starting with xen-3.0.2, we can add notes so that virual memory starts
     60  * at KERNBASE for domU as well.
     61  */
     62 #if defined(XEN3) && (defined(DOM0OPS) || !defined(XEN_COMPAT_030001))
     63 #define XPMAP_OFFSET	0
     64 #else
     65 #define	XPMAP_OFFSET	(KERNTEXTOFF - KERNBASE)
     66 #endif
     67 
     68 static __inline paddr_t
     69 xpmap_mtop(paddr_t mpa)
     70 {
     71 	return ((machine_to_phys_mapping[mpa >> PAGE_SHIFT] << PAGE_SHIFT) +
     72 	    XPMAP_OFFSET) | (mpa & ~PG_FRAME);
     73 }
     74 
     75 static __inline paddr_t
     76 xpmap_mtop_masked(paddr_t mpa)
     77 {
     78 	return ((machine_to_phys_mapping[mpa >> PAGE_SHIFT] << PAGE_SHIFT) +
     79 	    XPMAP_OFFSET);
     80 }
     81 
     82 static __inline paddr_t
     83 xpmap_ptom(paddr_t ppa)
     84 {
     85 	return (xpmap_phys_to_machine_mapping[(ppa -
     86 	    XPMAP_OFFSET) >> PAGE_SHIFT] << PAGE_SHIFT)
     87 		| (ppa & ~PG_FRAME);
     88 }
     89 
     90 static __inline paddr_t
     91 xpmap_ptom_masked(paddr_t ppa)
     92 {
     93 	return (xpmap_phys_to_machine_mapping[(ppa -
     94 	    XPMAP_OFFSET) >> PAGE_SHIFT] << PAGE_SHIFT);
     95 }
     96 
     97 #ifdef XEN3
     98 static inline void
     99 MULTI_update_va_mapping(
    100 	multicall_entry_t *mcl, vaddr_t va,
    101 	paddr_t new_val, unsigned long flags)
    102 {
    103 	mcl->op = __HYPERVISOR_update_va_mapping;
    104 	mcl->args[0] = va;
    105 #if defined(__x86_64__)
    106 	mcl->args[1] = new_val;
    107 	mcl->args[2] = flags;
    108 #else
    109 	mcl->args[1] = new_val;
    110 	mcl->args[2] = 0;
    111 	mcl->args[3] = flags;
    112 #endif
    113 }
    114 
    115 static inline void
    116 MULTI_update_va_mapping_otherdomain(
    117 	multicall_entry_t *mcl, vaddr_t va,
    118 	paddr_t new_val, unsigned long flags, domid_t domid)
    119 {
    120 	mcl->op = __HYPERVISOR_update_va_mapping_otherdomain;
    121 	mcl->args[0] = va;
    122 #if defined(__x86_64__)
    123 	mcl->args[1] = new_val;
    124 	mcl->args[2] = flags;
    125 	mcl->args[3] = domid;
    126 #else
    127 	mcl->args[1] = new_val;
    128 	mcl->args[2] = 0;
    129 	mcl->args[3] = flags;
    130 	mcl->args[4] = domid;
    131 #endif
    132 }
    133 #if defined(__x86_64__)
    134 #define MULTI_UVMFLAGS_INDEX 2
    135 #define MULTI_UVMDOMID_INDEX 3
    136 #else
    137 #define MULTI_UVMFLAGS_INDEX 3
    138 #define MULTI_UVMDOMID_INDEX 4
    139 #endif
    140 
    141 #if defined(__x86_64__)
    142 void xen_set_user_pgd(paddr_t);
    143 #endif
    144 
    145 #endif /* XEN3 */
    146 
    147 #endif /* _XEN_XENPMAP_H_ */
    148