xenvar.h revision 185386 
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/6/sys/amd64/include/xen/xenvar.h 185386 2008-11-28 15:49:36Z 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 <machine/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
72#define set_phys_to_machine(pfn, mfn)	((void)0)
73#define PT_UPDATES_FLUSH()		((void)0)
74
75#else
76
77extern	xen_pfn_t *xen_phys_machine;
78
79
80extern xen_pfn_t *xen_machine_phys;
81/* Xen starts physical pages after the 4MB ISA hole -
82 * FreeBSD doesn't
83 */
84
85
86#undef ADD_ISA_HOLE /* XXX */
87
88#ifdef ADD_ISA_HOLE
89#define ISA_INDEX_OFFSET 1024
90#define ISA_PDR_OFFSET 1
91#else
92#define ISA_INDEX_OFFSET 0
93#define ISA_PDR_OFFSET 0
94#endif
95
96
97#define PFNTOMFN(i) (xen_phys_machine[(i)])
98#define MFNTOPFN(i) ((vm_paddr_t)xen_machine_phys[(i)])
99
100#define VTOP(x) ((((uintptr_t)(x))) - KERNBASE)
101#define PTOV(x) (((uintptr_t)(x)) + KERNBASE)
102
103#define VTOPFN(x) (VTOP(x) >> PAGE_SHIFT)
104#define PFNTOV(x) PTOV((vm_paddr_t)(x)  << PAGE_SHIFT)
105
106#define VTOMFN(va) (vtomach(va) >> PAGE_SHIFT)
107#define PFN_UP(x)    (((x) + PAGE_SIZE-1) >> PAGE_SHIFT)
108
109#define phystomach(pa) (((vm_paddr_t)(PFNTOMFN((pa) >> PAGE_SHIFT))) << PAGE_SHIFT)
110#define machtophys(ma) (((vm_paddr_t)(MFNTOPFN((ma) >> PAGE_SHIFT))) << PAGE_SHIFT)
111
112#endif
113
114
115void xpq_init(void);
116
117#define BITS_PER_LONG 32
118#define NR_CPUS      MAX_VIRT_CPUS
119
120#define BITS_TO_LONGS(bits) \
121	(((bits)+BITS_PER_LONG-1)/BITS_PER_LONG)
122#define DECLARE_BITMAP(name,bits) \
123	unsigned long name[BITS_TO_LONGS(bits)]
124typedef struct { DECLARE_BITMAP(bits, NR_CPUS); } xen_cpumask_t;
125
126int  xen_create_contiguous_region(vm_page_t pages, int npages);
127
128void  xen_destroy_contiguous_region(void * addr, int npages);
129
130#endif
131