1 /*
2 * CDDL HEADER START
3 *
4 * The contents of this file are subject to the terms of the
5 * Common Development and Distribution License, Version 1.0 only
6 * (the "License"). You may not use this file except in compliance
7 * with the License.
8 *
9 * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
10 * or http://www.opensolaris.org/os/licensing.
11 * See the License for the specific language governing permissions
12 * and limitations under the License.
13 *
14 * When distributing Covered Code, include this CDDL HEADER in each
15 * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
16 * If applicable, add the following below this CDDL HEADER, with the
17 * fields enclosed by brackets "[]" replaced with your own identifying
18 * information: Portions Copyright [yyyy] [name of copyright owner]
19 *
20 * CDDL HEADER END
21 */
22 /*
23 * Copyright 2005 Sun Microsystems, Inc. All rights reserved.
24 * Use is subject to license terms.
25 */
26
27 #include <sys/types.h>
28 #include <sys/saio.h>
29 #include <sys/sysmacros.h>
30 #include <sys/promif.h>
31 #include <sys/bootconf.h>
32 #include <sys/salib.h>
33
34 #ifdef DEBUG
35 static int resalloc_debug = 1;
36 #else /* DEBUG */
37 static int resalloc_debug = 0;
38 #endif /* DEBUG */
39 #define dprintf if (resalloc_debug) printf
40
41 extern caddr_t resalloc(enum RESOURCES type,
42 size_t bytes, caddr_t virthint, int align);
43 extern void resfree(enum RESOURCES type,
44 caddr_t virtaddr, size_t bytes);
45
46 extern int pagesize;
47
48 /*
49 * This routine should be called get_a_page().
50 * It allocates from the appropriate entity one or
51 * more pages and maps them in.
52 */
53
54 caddr_t
kern_resalloc(caddr_t virthint,size_t size,int align)55 kern_resalloc(caddr_t virthint, size_t size, int align)
56 {
57 if (virthint != 0)
58 return (resalloc(RES_CHILDVIRT, size, virthint, align));
59 else {
60 return (resalloc(RES_BOOTSCRATCH, size, NULL, NULL));
61 }
62 }
63
64 /*
65 * This is called only on sparcv9 for freeing scratch memory.
66 * The standalone allocator cannot free other types of memory.
67 */
68 void
kern_resfree(caddr_t virtaddr,size_t size)69 kern_resfree(caddr_t virtaddr, size_t size)
70 {
71 resfree(RES_BOOTSCRATCH, virtaddr, size);
72 }
73
74 int
get_progmemory(caddr_t vaddr,size_t size,int align)75 get_progmemory(caddr_t vaddr, size_t size, int align)
76 {
77 uintptr_t n;
78
79 /*
80 * if the vaddr given is not a mult of PAGESIZE,
81 * then we rounddown to a page, but keep the same
82 * ending addr.
83 */
84 n = (uintptr_t)vaddr & (pagesize - 1);
85 if (n) {
86 vaddr -= n;
87 size += n;
88 }
89
90 dprintf("get_progmemory: requesting %lx bytes at %p\n", size,
91 (void *)vaddr);
92 if (resalloc(RES_CHILDVIRT, size, vaddr, align) != vaddr)
93 return (-1);
94 return (0);
95 }
96