xenvar.h revision 185181 
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/i386/include/xen/xenvar.h 183906 2008-10-15 05:44:08Z kmacy $
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
42extern	xen_pfn_t *xen_phys_machine;
43
44#if 0
45#define TRACE_ENTER XENPRINTF("(file=%s, line=%d) entered %s\n", __FILE__, __LINE__, __FUNCTION__)
46#define TRACE_EXIT XENPRINTF("(file=%s, line=%d) exiting %s\n", __FILE__, __LINE__, __FUNCTION__)
47#define TRACE_DEBUG(argflags, _f, _a...) \
48if (xendebug_flags & argflags) XENPRINTF("(file=%s, line=%d) " _f "\n", __FILE__, __LINE__, ## _a);
49#else
50#define TRACE_ENTER
51#define TRACE_EXIT
52#define TRACE_DEBUG(argflags, _f, _a...)
53#endif
54
55extern xen_pfn_t *xen_machine_phys;
56/* Xen starts physical pages after the 4MB ISA hole -
57 * FreeBSD doesn't
58 */
59
60
61#undef ADD_ISA_HOLE /* XXX */
62
63#ifdef ADD_ISA_HOLE
64#define ISA_INDEX_OFFSET 1024
65#define ISA_PDR_OFFSET 1
66#else
67#define ISA_INDEX_OFFSET 0
68#define ISA_PDR_OFFSET 0
69#endif
70
71
72#define PFNTOMFN(i) (xen_phys_machine[(i)])
73#define MFNTOPFN(i) ((vm_paddr_t)xen_machine_phys[(i)])
74
75#define VTOP(x) ((((uintptr_t)(x))) - KERNBASE)
76#define PTOV(x) (((uintptr_t)(x)) + KERNBASE)
77
78#define VTOPFN(x) (VTOP(x) >> PAGE_SHIFT)
79#define PFNTOV(x) PTOV((vm_paddr_t)(x)  << PAGE_SHIFT)
80
81#define VTOMFN(va) (vtomach(va) >> PAGE_SHIFT)
82#define PFN_UP(x)    (((x) + PAGE_SIZE-1) >> PAGE_SHIFT)
83
84#define phystomach(pa) (((vm_paddr_t)(PFNTOMFN((pa) >> PAGE_SHIFT))) << PAGE_SHIFT)
85#define machtophys(ma) (((vm_paddr_t)(MFNTOPFN((ma) >> PAGE_SHIFT))) << PAGE_SHIFT)
86
87
88void xpq_init(void);
89
90#define BITS_PER_LONG 32
91#define NR_CPUS      MAX_VIRT_CPUS
92
93#define BITS_TO_LONGS(bits) \
94	(((bits)+BITS_PER_LONG-1)/BITS_PER_LONG)
95#define DECLARE_BITMAP(name,bits) \
96	unsigned long name[BITS_TO_LONGS(bits)]
97typedef struct { DECLARE_BITMAP(bits, NR_CPUS); } xen_cpumask_t;
98
99int  xen_create_contiguous_region(vm_page_t pages, int npages);
100
101void  xen_destroy_contiguous_region(void * addr, int npages);
102
103#endif
104