copy.c revision 164010 
1/*-
2 * Copyright (c) 2006 Marcel Moolenaar
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 * 2. Redistributions in binary form must reproduce the above copyright
12 *    notice, this list of conditions and the following disclaimer in the
13 *    documentation and/or other materials provided with the distribution.
14 *
15 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
16 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
17 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
18 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
19 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
20 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
21 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
22 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
23 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
24 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
25 */
26
27#include <sys/cdefs.h>
28__FBSDID("$FreeBSD: head/sys/boot/ia64/common/copy.c 164010 2006-11-05 22:03:04Z marcel $");
29
30#include <stand.h>
31#include <ia64/include/vmparam.h>
32
33#include "libia64.h"
34
35#define	LDR_LOG2_PGSZ	20
36
37uint64_t *ia64_pgtbl;
38uint32_t ia64_pgtblsz;
39
40static void *
41va2pa(vm_offset_t va, size_t *len)
42{
43	uint64_t pa;
44
45	if (va >= IA64_RR_BASE(7)) {
46		pa = IA64_RR_MASK(va);
47		return ((void *)pa);
48	}
49
50	printf("\n%s: va=%lx, *len=%lx\n", __func__, va, *len);
51	*len = 0;
52	return (NULL);
53}
54
55ssize_t
56ia64_copyin(const void *src, vm_offset_t va, size_t len)
57{
58	void *pa;
59	ssize_t res;
60	size_t sz;
61
62	res = 0;
63	while (len > 0) {
64		sz = len;
65		pa = va2pa(va, &sz);
66		if (sz == 0)
67			break;
68		bcopy(src, pa, sz);
69		len -= sz;
70		res += sz;
71		va += sz;
72	}
73	return (res);
74}
75
76ssize_t
77ia64_copyout(vm_offset_t va, void *dst, size_t len)
78{
79	void *pa;
80	ssize_t res;
81	size_t sz;
82
83	res = 0;
84	while (len > 0) {
85		sz = len;
86		pa = va2pa(va, &sz);
87		if (sz == 0)
88			break;
89		bcopy(pa, dst, sz);
90		len -= sz;
91		res += sz;
92		va += sz;
93	}
94	return (res);
95}
96
97ssize_t
98ia64_readin(int fd, vm_offset_t va, size_t len)
99{
100	void *pa;
101	ssize_t res, s;
102	size_t sz;
103
104	res = 0;
105	while (len > 0) {
106		sz = len;
107		pa = va2pa(va, &sz);
108		if (sz == 0)
109			break;
110		s = read(fd, pa, sz);
111		if (s <= 0)
112			break;
113		len -= s;
114		res += s;
115		va += s;
116	}
117	return (res);
118}
119