1/* $NetBSD: xenpmap.h,v 1.38 2014/05/06 04:26:24 cherry 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 *
17 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
18 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
19 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
20 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
21 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
22 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
23 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
24 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
25 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
26 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
27 */
28
29
30#ifndef _XEN_XENPMAP_H_
31#define _XEN_XENPMAP_H_
32
33#ifdef _KERNEL_OPT
34#include "opt_xen.h"
35#endif
36
37#include <sys/types.h>
38#include <sys/kcpuset.h>
39
40#define INVALID_P2M_ENTRY (~0UL)
41
42void xpq_queue_machphys_update(paddr_t, paddr_t);
43void xpq_queue_invlpg(vaddr_t);
44void xpq_queue_pte_update(paddr_t, pt_entry_t);
45void xpq_queue_pt_switch(paddr_t);
46void xpq_flush_queue(void);
47void xpq_queue_set_ldt(vaddr_t, uint32_t);
48void xpq_queue_tlb_flush(void);
49void xpq_queue_pin_table(paddr_t, int);
50void xpq_queue_unpin_table(paddr_t);
51int xpq_update_foreign(paddr_t, pt_entry_t, int);
52void xen_vcpu_mcast_invlpg(vaddr_t, vaddr_t, kcpuset_t *);
53void xen_vcpu_bcast_invlpg(vaddr_t, vaddr_t);
54void xen_mcast_tlbflush(kcpuset_t *);
55void xen_bcast_tlbflush(void);
56void xen_mcast_invlpg(vaddr_t, kcpuset_t *);
57void xen_bcast_invlpg(vaddr_t);
58void xen_copy_page(paddr_t, paddr_t);
59void xen_pagezero(paddr_t);
60
61void pmap_xen_resume(void);
62void pmap_xen_suspend(void);
63void pmap_map_recursive_entries(void);
64void pmap_unmap_recursive_entries(void);
65
66#if defined(PAE) || defined(__x86_64__)
67void xen_kpm_sync(struct pmap *, int);
68#endif /* PAE || __x86_64__ */
69
70#define xpq_queue_pin_l1_table(pa) \
71 xpq_queue_pin_table(pa, MMUEXT_PIN_L1_TABLE)
72#define xpq_queue_pin_l2_table(pa) \
73 xpq_queue_pin_table(pa, MMUEXT_PIN_L2_TABLE)
74#define xpq_queue_pin_l3_table(pa) \
75 xpq_queue_pin_table(pa, MMUEXT_PIN_L3_TABLE)
76#define xpq_queue_pin_l4_table(pa) \
77 xpq_queue_pin_table(pa, MMUEXT_PIN_L4_TABLE)
78
79extern unsigned long *xpmap_phys_to_machine_mapping;
80
81static __inline paddr_t
82xpmap_mtop_masked(paddr_t mpa)
83{
84 return (
85 (paddr_t)machine_to_phys_mapping[mpa >> PAGE_SHIFT] << PAGE_SHIFT);
86}
87
88static __inline paddr_t
89xpmap_mtop(paddr_t mpa)
90{
91 return (xpmap_mtop_masked(mpa) | (mpa & ~PG_FRAME));
92}
93
94static __inline paddr_t
95xpmap_ptom_masked(paddr_t ppa)
96{
97 return (
98 (paddr_t)xpmap_phys_to_machine_mapping[ppa >> PAGE_SHIFT]
99 << PAGE_SHIFT);
100}
101
102static __inline paddr_t
103xpmap_ptom(paddr_t ppa)
104{
105 return (xpmap_ptom_masked(ppa) | (ppa & ~PG_FRAME));
106}
107
108static __inline void
109xpmap_ptom_map(paddr_t ppa, paddr_t mpa)
110{
111 xpmap_phys_to_machine_mapping[ppa >> PAGE_SHIFT] = mpa >> PAGE_SHIFT;
112}
113
114static __inline void
115xpmap_ptom_unmap(paddr_t ppa)
116{
117 xpmap_phys_to_machine_mapping[ppa >> PAGE_SHIFT] = INVALID_P2M_ENTRY;
118}
119
120static __inline bool
121xpmap_ptom_isvalid(paddr_t ppa)
122{
123 return (
124 xpmap_phys_to_machine_mapping[ppa >> PAGE_SHIFT]
125 != INVALID_P2M_ENTRY);
126}
127
128static inline void
129MULTI_update_va_mapping(
130 multicall_entry_t *mcl, vaddr_t va,
131 pt_entry_t new_val, unsigned long flags)
132{
133 mcl->op = __HYPERVISOR_update_va_mapping;
134 mcl->args[0] = va;
135#if defined(__x86_64__)
136 mcl->args[1] = new_val;
137 mcl->args[2] = flags;
138#else
139 mcl->args[1] = (new_val & 0xffffffff);
140#ifdef PAE
141 mcl->args[2] = (new_val >> 32);
142#else
143 mcl->args[2] = 0;
144#endif
145 mcl->args[3] = flags;
146#endif
147}
148
149static inline void
150MULTI_update_va_mapping_otherdomain(
151 multicall_entry_t *mcl, vaddr_t va,
152 pt_entry_t new_val, unsigned long flags, domid_t domid)
153{
154 mcl->op = __HYPERVISOR_update_va_mapping_otherdomain;
155 mcl->args[0] = va;
156#if defined(__x86_64__)
157 mcl->args[1] = new_val;
158 mcl->args[2] = flags;
159 mcl->args[3] = domid;
160#else
161 mcl->args[1] = (new_val & 0xffffffff);
162#ifdef PAE
163 mcl->args[2] = (new_val >> 32);
164#else
165 mcl->args[2] = 0;
166#endif
167 mcl->args[3] = flags;
168 mcl->args[4] = domid;
169#endif
170}
171#if defined(__x86_64__)
172#define MULTI_UVMFLAGS_INDEX 2
173#define MULTI_UVMDOMID_INDEX 3
174#else
175#define MULTI_UVMFLAGS_INDEX 3
176#define MULTI_UVMDOMID_INDEX 4
177#endif
178
179#if defined(__x86_64__)
180void xen_set_user_pgd(paddr_t);
181#endif
182
183#endif /* _XEN_XENPMAP_H_ */
184