xenvar.h revision 189614 
1/*
2 * Copyright (c) 2008 Kip Macy
3 * All rights reserved.
4 *
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
7 * are met:
8 *
9 * 1. Redistributions of source code must retain the above copyright
10 *    notice, this list of conditions and the following disclaimer.
11 *
12 * 2. Redistributions in binary form must reproduce the above copyright
13 *    notice, this list of conditions and the following disclaimer in the
14 *    documentation and/or other materials provided with the distribution.
15 *
16 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
17 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
18 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
19 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
20 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
21 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
22 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
23 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
24 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
25 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
26 *
27 *
28 * $FreeBSD: user/dfr/xenhvm/7/sys/amd64/include/xen/xenvar.h 189614 2009-03-10 10:59:30Z dfr $
29 */
30#ifndef XENVAR_H_
31#define XENVAR_H_
32#define XBOOTUP 0x1
33#define XPMAP   0x2
34extern int xendebug_flags;
35#ifndef NOXENDEBUG
36#define XENPRINTF printk
37#else
38#define XENPRINTF printf
39#endif
40#include <xen/features.h>
41
42#if 0
43#define TRACE_ENTER XENPRINTF("(file=%s, line=%d) entered %s\n", __FILE__, __LINE__, __FUNCTION__)
44#define TRACE_EXIT XENPRINTF("(file=%s, line=%d) exiting %s\n", __FILE__, __LINE__, __FUNCTION__)
45#define TRACE_DEBUG(argflags, _f, _a...) \
46if (xendebug_flags & argflags) XENPRINTF("(file=%s, line=%d) " _f "\n", __FILE__, __LINE__, ## _a);
47#else
48#define TRACE_ENTER
49#define TRACE_EXIT
50#define TRACE_DEBUG(argflags, _f, _a...)
51#endif
52
53#ifdef XENHVM
54
55static inline vm_paddr_t
56phystomach(vm_paddr_t pa)
57{
58
59	return (pa);
60}
61
62static inline vm_paddr_t
63machtophys(vm_paddr_t ma)
64{
65
66	return (ma);
67}
68
69#define vtomach(va)	pmap_kextract((vm_offset_t) (va))
70#define PFNTOMFN(pa)	(pa)
71#define MFNTOPFN(ma)	(ma)
72
73#define set_phys_to_machine(pfn, mfn)	((void)0)
74#define PT_UPDATES_FLUSH()		((void)0)
75
76#else
77
78extern	xen_pfn_t *xen_phys_machine;
79
80
81extern xen_pfn_t *xen_machine_phys;
82/* Xen starts physical pages after the 4MB ISA hole -
83 * FreeBSD doesn't
84 */
85
86
87#undef ADD_ISA_HOLE /* XXX */
88
89#ifdef ADD_ISA_HOLE
90#define ISA_INDEX_OFFSET 1024
91#define ISA_PDR_OFFSET 1
92#else
93#define ISA_INDEX_OFFSET 0
94#define ISA_PDR_OFFSET 0
95#endif
96
97
98#define PFNTOMFN(i) (xen_phys_machine[(i)])
99#define MFNTOPFN(i) ((vm_paddr_t)xen_machine_phys[(i)])
100
101#define VTOP(x) ((((uintptr_t)(x))) - KERNBASE)
102#define PTOV(x) (((uintptr_t)(x)) + KERNBASE)
103
104#define VTOPFN(x) (VTOP(x) >> PAGE_SHIFT)
105#define PFNTOV(x) PTOV((vm_paddr_t)(x)  << PAGE_SHIFT)
106
107#define VTOMFN(va) (vtomach(va) >> PAGE_SHIFT)
108#define PFN_UP(x)    (((x) + PAGE_SIZE-1) >> PAGE_SHIFT)
109
110#define phystomach(pa) (((vm_paddr_t)(PFNTOMFN((pa) >> PAGE_SHIFT))) << PAGE_SHIFT)
111#define machtophys(ma) (((vm_paddr_t)(MFNTOPFN((ma) >> PAGE_SHIFT))) << PAGE_SHIFT)
112
113#endif
114
115void xpq_init(void);
116
117int  xen_create_contiguous_region(vm_page_t pages, int npages);
118
119void  xen_destroy_contiguous_region(void * addr, int npages);
120
121#endif
122