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 * 1. Redistributions of source code must retain the above copyright
9 *    notice, this list of conditions and the following disclaimer.
10 * 2. Redistributions in binary form must reproduce the above copyright
11 *    notice, this list of conditions and the following disclaimer in the
12 *    documentation and/or other materials provided with the distribution.
13 *
14 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
15 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
16 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
17 * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
18 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
19 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
20 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
21 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
22 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
23 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
24 * SUCH DAMAGE.
25 *
26 * $FreeBSD$
27 */
28
29#ifndef XENVAR_H_
30#define XENVAR_H_
31
32#include <machine/xen/features.h>
33
34#if defined(XEN)
35
36#define XBOOTUP 0x1
37#define XPMAP   0x2
38extern int xendebug_flags;
39#ifndef NOXENDEBUG
40#define XENPRINTF printk
41#else
42#define XENPRINTF printf
43#endif
44
45extern	xen_pfn_t *xen_phys_machine;
46extern	xen_pfn_t *xen_pfn_to_mfn_frame_list[16];
47extern	xen_pfn_t *xen_pfn_to_mfn_frame_list_list;
48
49#if 0
50#define TRACE_ENTER XENPRINTF("(file=%s, line=%d) entered %s\n", __FILE__, __LINE__, __FUNCTION__)
51#define TRACE_EXIT XENPRINTF("(file=%s, line=%d) exiting %s\n", __FILE__, __LINE__, __FUNCTION__)
52#define TRACE_DEBUG(argflags, _f, _a...) \
53if (xendebug_flags & argflags) XENPRINTF("(file=%s, line=%d) " _f "\n", __FILE__, __LINE__, ## _a);
54#else
55#define TRACE_ENTER
56#define TRACE_EXIT
57#define TRACE_DEBUG(argflags, _f, _a...)
58#endif
59
60extern xen_pfn_t *xen_machine_phys;
61/* Xen starts physical pages after the 4MB ISA hole -
62 * FreeBSD doesn't
63 */
64
65
66#undef ADD_ISA_HOLE /* XXX */
67
68#ifdef ADD_ISA_HOLE
69#define ISA_INDEX_OFFSET 1024
70#define ISA_PDR_OFFSET 1
71#else
72#define ISA_INDEX_OFFSET 0
73#define ISA_PDR_OFFSET 0
74#endif
75
76
77#define PFNTOMFN(i) (xen_phys_machine[(i)])
78#define MFNTOPFN(i) ((vm_paddr_t)xen_machine_phys[(i)])
79
80#define VTOP(x) ((((uintptr_t)(x))) - KERNBASE)
81#define PTOV(x) (((uintptr_t)(x)) + KERNBASE)
82
83#define VTOPFN(x) (VTOP(x) >> PAGE_SHIFT)
84#define PFNTOV(x) PTOV((vm_paddr_t)(x)  << PAGE_SHIFT)
85
86#define VTOMFN(va) (vtomach(va) >> PAGE_SHIFT)
87#define PFN_UP(x)    (((x) + PAGE_SIZE-1) >> PAGE_SHIFT)
88
89#define phystomach(pa) (((vm_paddr_t)(PFNTOMFN((pa) >> PAGE_SHIFT))) << PAGE_SHIFT)
90#define machtophys(ma) (((vm_paddr_t)(MFNTOPFN((ma) >> PAGE_SHIFT))) << PAGE_SHIFT)
91
92
93void xpq_init(void);
94
95#define BITS_PER_LONG 32
96#define NR_CPUS      MAX_VIRT_CPUS
97
98#define BITS_TO_LONGS(bits) \
99	(((bits)+BITS_PER_LONG-1)/BITS_PER_LONG)
100#define DECLARE_BITMAP(name,bits) \
101	unsigned long name[BITS_TO_LONGS(bits)]
102
103int  xen_create_contiguous_region(vm_page_t pages, int npages);
104
105void  xen_destroy_contiguous_region(void * addr, int npages);
106
107#elif defined(XENHVM)
108
109#define	vtomach(va)	pmap_kextract((vm_offset_t) (va))
110#define	PFNTOMFN(pa)	(pa)
111#define	MFNTOPFN(ma)	(ma)
112
113#define	set_phys_to_machine(pfn, mfn)		((void)0)
114#define	phys_to_machine_mapping_valid(pfn)	(TRUE)
115
116#endif /* !XEN && !XENHVM */
117
118#endif
119