xref: /freebsd/lib/libkvm/kvm_aarch64.h (revision b3e76948)
1 /*-
2  * Copyright (c) 2015 John H. Baldwin <jhb@FreeBSD.org>
3  *
4  * Redistribution and use in source and binary forms, with or without
5  * modification, are permitted provided that the following conditions
6  * are met:
7  * 1. Redistributions of source code must retain the above copyright
8  *    notice, this list of conditions and the following disclaimer.
9  * 2. Redistributions in binary form must reproduce the above copyright
10  *    notice, this list of conditions and the following disclaimer in the
11  *    documentation and/or other materials provided with the distribution.
12  *
13  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
14  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
15  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
16  * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
17  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
18  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
19  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
20  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
21  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
22  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
23  * SUCH DAMAGE.
24  */
25 
26 #ifndef __KVM_AARCH64_H__
27 #define	__KVM_AARCH64_H__
28 
29 #ifdef __aarch64__
30 #include <machine/pte.h>
31 #endif
32 
33 typedef uint64_t	aarch64_physaddr_t;
34 typedef uint64_t	aarch64_pte_t;
35 
36 #define	AARCH64_PAGE_SHIFT_4K	12
37 #define	AARCH64_PAGE_SIZE_4K	(1 << AARCH64_PAGE_SHIFT_4K)
38 
39 #define	AARCH64_PAGE_SHIFT_16K	14
40 #define	AARCH64_PAGE_SIZE_16K	(1 << AARCH64_PAGE_SHIFT_16K)
41 
42 /* Source: arm64/include/pte.h */
43 #define	AARCH64_ATTR_MASK	0xfffc000000000fff
44 #define	AARCH64_ATTR_UXN	(1ULL << 54)
45 #define	AARCH64_ATTR_PXN	(1ULL << 53)
46 #define	AARCH64_ATTR_XN		(AARCH64_ATTR_PXN | AARCH64_ATTR_UXN)
47 #define	AARCH64_ATTR_AP(x)	((x) << 6)
48 #define	AARCH64_ATTR_AP_RO	(1 << 1)
49 
50 #define	AARCH64_ATTR_DESCR_MASK	3
51 
52 #define	AARCH64_L3_SHIFT_4K	12
53 #define	AARCH64_L3_SHIFT_16K	14
54 #define	AARCH64_L3_PAGE		0x3
55 
56 #ifdef __aarch64__
57 _Static_assert(ATTR_MASK == AARCH64_ATTR_MASK, "ATTR_MASK mismatch");
58 _Static_assert(ATTR_DESCR_MASK == AARCH64_ATTR_DESCR_MASK,
59     "ATTR_DESCR_MASK mismatch");
60 _Static_assert(L3_PAGE == AARCH64_L3_PAGE, "L3_PAGE mismatch");
61 #endif
62 
63 #endif /* !__KVM_AARCH64_H__ */
64