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#ifndef XENVAR_H_
29#define XENVAR_H_
30#define XBOOTUP 0x1
31#define XPMAP   0x2
32extern int xendebug_flags;
33#ifndef NOXENDEBUG
34#define XENPRINTF printk
35#else
36#define XENPRINTF printf
37#endif
38#include <xen/features.h>
39
40#if 0
41#define TRACE_ENTER XENPRINTF("(file=%s, line=%d) entered %s\n", __FILE__, __LINE__, __FUNCTION__)
42#define TRACE_EXIT XENPRINTF("(file=%s, line=%d) exiting %s\n", __FILE__, __LINE__, __FUNCTION__)
43#define TRACE_DEBUG(argflags, _f, _a...) \
44if (xendebug_flags & argflags) XENPRINTF("(file=%s, line=%d) " _f "\n", __FILE__, __LINE__, ## _a);
45#else
46#define TRACE_ENTER
47#define TRACE_EXIT
48#define TRACE_DEBUG(argflags, _f, _a...)
49#endif
50
51#ifdef XENHVM
52
53static inline vm_paddr_t
54phystomach(vm_paddr_t pa)
55{
56
57	return (pa);
58}
59
60static inline vm_paddr_t
61machtophys(vm_paddr_t ma)
62{
63
64	return (ma);
65}
66
67#define vtomach(va)	pmap_kextract((vm_offset_t) (va))
68#define PFNTOMFN(pa)	(pa)
69#define MFNTOPFN(ma)	(ma)
70
71#define set_phys_to_machine(pfn, mfn)	((void)0)
72#define phys_to_machine_mapping_valid(pfn)	(TRUE)
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
114void xpq_init(void);
115
116int  xen_create_contiguous_region(vm_page_t pages, int npages);
117
118void  xen_destroy_contiguous_region(void * addr, int npages);
119
120#endif
121