Annotation of sys/arch/aviion/aviion/pmap_bootstrap.c, Revision 1.1.1.1
1.1 nbrk 1: /* $OpenBSD: pmap_bootstrap.c,v 1.1.1.1 2006/05/07 15:55:55 miod Exp $ */
2: /*
3: * Copyright (c) 2001-2004, Miodrag Vallat
4: * Copyright (c) 1998-2001 Steve Murphree, Jr.
5: * Copyright (c) 1996 Nivas Madhur
6: * All rights reserved.
7: *
8: * Redistribution and use in source and binary forms, with or without
9: * modification, are permitted provided that the following conditions
10: * are met:
11: * 1. Redistributions of source code must retain the above copyright
12: * notice, this list of conditions and the following disclaimer.
13: * 2. Redistributions in binary form must reproduce the above copyright
14: * notice, this list of conditions and the following disclaimer in the
15: * documentation and/or other materials provided with the distribution.
16: * 3. All advertising materials mentioning features or use of this software
17: * must display the following acknowledgement:
18: * This product includes software developed by Nivas Madhur.
19: * 4. The name of the author may not be used to endorse or promote products
20: * derived from this software without specific prior written permission
21: *
22: * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
23: * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
24: * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
25: * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
26: * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
27: * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
28: * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
29: * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
30: * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
31: * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
32: *
33: */
34: /*
35: * Mach Operating System
36: * Copyright (c) 1991 Carnegie Mellon University
37: * Copyright (c) 1991 OMRON Corporation
38: * All Rights Reserved.
39: *
40: * Permission to use, copy, modify and distribute this software and its
41: * documentation is hereby granted, provided that both the copyright
42: * notice and this permission notice appear in all copies of the
43: * software, derivative works or modified versions, and any portions
44: * thereof, and that both notices appear in supporting documentation.
45: *
46: */
47:
48: #include <sys/param.h>
49: #include <sys/systm.h>
50:
51: #include <uvm/uvm.h>
52:
53: extern vaddr_t pmap_map(vaddr_t, paddr_t, paddr_t, vm_prot_t, u_int);
54: extern vaddr_t avail_start;
55: extern vaddr_t virtual_avail;
56:
57: #define ETHERPAGES 16 /* 64 KB */
58: void *etherbuf = NULL;
59: size_t etherlen;
60:
61: vaddr_t
62: pmap_bootstrap_md(vaddr_t vaddr)
63: {
64: /*
65: * Get ethernet buffer - need ETHERPAGES pages physically contiguous
66: * below 16MB.
67: */
68: if (vaddr < 0x01000000 - ptoa(ETHERPAGES)) {
69: etherlen = ptoa(ETHERPAGES);
70: etherbuf = (void *)vaddr;
71:
72: vaddr = pmap_map(vaddr, avail_start, avail_start + etherlen,
73: UVM_PROT_RW, CACHE_INH);
74:
75: virtual_avail += etherlen;
76: avail_start += etherlen;
77: }
78:
79: return vaddr;
80: }
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