copy.c revision 164412 
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 164412 2006-11-19 20:04:11Z marcel $");
29
30#include <stand.h>
31#include <ia64/include/vmparam.h>
32
33#include "libia64.h"
34
35static void *
36va2pa(vm_offset_t va, size_t *len)
37{
38	uint64_t pa;
39
40	if (va >= IA64_RR_BASE(7)) {
41		pa = IA64_RR_MASK(va);
42		return ((void *)pa);
43	}
44
45	printf("\n%s: va=%lx, *len=%lx\n", __func__, va, *len);
46	*len = 0;
47	return (NULL);
48}
49
50ssize_t
51ia64_copyin(const void *src, vm_offset_t va, size_t len)
52{
53	void *pa;
54	ssize_t res;
55	size_t sz;
56
57	res = 0;
58	while (len > 0) {
59		sz = len;
60		pa = va2pa(va, &sz);
61		if (sz == 0)
62			break;
63		bcopy(src, pa, sz);
64		len -= sz;
65		res += sz;
66		va += sz;
67	}
68	return (res);
69}
70
71ssize_t
72ia64_copyout(vm_offset_t va, void *dst, size_t len)
73{
74	void *pa;
75	ssize_t res;
76	size_t sz;
77
78	res = 0;
79	while (len > 0) {
80		sz = len;
81		pa = va2pa(va, &sz);
82		if (sz == 0)
83			break;
84		bcopy(pa, dst, sz);
85		len -= sz;
86		res += sz;
87		va += sz;
88	}
89	return (res);
90}
91
92ssize_t
93ia64_readin(int fd, vm_offset_t va, size_t len)
94{
95	void *pa;
96	ssize_t res, s;
97	size_t sz;
98
99	res = 0;
100	while (len > 0) {
101		sz = len;
102		pa = va2pa(va, &sz);
103		if (sz == 0)
104			break;
105		s = read(fd, pa, sz);
106		if (s <= 0)
107			break;
108		len -= s;
109		res += s;
110		va += s;
111	}
112	return (res);
113}
114