sgi_if.c
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上传日期:2013-02-24
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- /* $Id$
- *
- * This file is subject to the terms and conditions of the GNU General Public
- * License. See the file "COPYING" in the main directory of this archive
- * for more details.
- *
- * Copyright (C) 1992 - 1997, 2000 Silicon Graphics, Inc.
- * Copyright (C) 2000 by Colin Ngam
- */
- #include <linux/types.h>
- #include <linux/ctype.h>
- #include <linux/mm.h>
- #include <linux/slab.h>
- #include <asm/sn/sgi.h>
- #include <asm/sn/invent.h>
- #include <asm/sn/hcl.h>
- #include <asm/sn/labelcl.h>
- #include <asm/sn/pci/bridge.h>
- #include <asm/sn/ioerror_handling.h>
- #include <asm/sn/pci/pciio.h>
- #include <asm/sn/slotnum.h>
- void *
- kmem_zalloc(size_t size, int flag)
- {
- void *ptr = kmalloc(size, GFP_KERNEL);
- BZERO(ptr, size);
- return ptr;
- }
- #define xtod(c) ((c) <= '9' ? '0' - (c) : 'a' - (c) - 10)
- long
- atoi(register char *p)
- {
- register long n;
- register int c, neg = 0;
- if (p == NULL)
- return 0;
- if (!isdigit(c = *p)) {
- while (isspace(c))
- c = *++p;
- switch (c) {
- case '-':
- neg++;
- case '+': /* fall-through */
- c = *++p;
- }
- if (!isdigit(c))
- return (0);
- }
- if (c == '0' && *(p + 1) == 'x') {
- p += 2;
- c = *p;
- n = xtod(c);
- while ((c = *++p) && isxdigit(c)) {
- n *= 16; /* two steps to avoid unnecessary overflow */
- n += xtod(c); /* accum neg to avoid surprises at MAX */
- }
- } else {
- n = '0' - c;
- while ((c = *++p) && isdigit(c)) {
- n *= 10; /* two steps to avoid unnecessary overflow */
- n += '0' - c; /* accum neg to avoid surprises at MAX */
- }
- }
- return (neg ? n : -n);
- }