include/asm-ia64/mmzone.h

   1 /*
   2  * This file is subject to the terms and conditions of the GNU General Public
   3  * License.  See the file "COPYING" in the main directory of this archive
   4  * for more details.
   5  *
   6  * Copyright (c) 2000,2003 Silicon Graphics, Inc.  All rights reserved.
   7  * Copyright (c) 2002 NEC Corp.
   8  * Copyright (c) 2002 Erich Focht <efocht@ess.nec.de>
   9  * Copyright (c) 2002 Kimio Suganuma <k-suganuma@da.jp.nec.com>
  10  */
  11 #ifndef _ASM_IA64_MMZONE_H
  12 #define _ASM_IA64_MMZONE_H
  13
  14 #include <linux/numa.h>
  15 #include <asm/page.h>
  16 #include <asm/meminit.h>
  17
  18 #ifdef CONFIG_NUMA
  19
  20 static inline int pfn_to_nid(unsigned long pfn)
  21 {
  22 #ifdef CONFIG_NUMA
  23         extern int paddr_to_nid(unsigned long);
  24         int nid = paddr_to_nid(pfn << PAGE_SHIFT);
  25         if (nid < 0)
  26                 return 0;
  27         else
  28                 return nid;
  29 #else
  30         return 0;
  31 #endif
  32 }
  33
  34 #ifdef CONFIG_HAVE_ARCH_EARLY_PFN_TO_NID
  35 extern int early_pfn_to_nid(unsigned long pfn);
  36 #endif
  37
  38 #ifdef CONFIG_IA64_DIG /* DIG systems are small */
  39 # define MAX_PHYSNODE_ID        8
  40 # define NR_NODE_MEMBLKS        (MAX_NUMNODES * 8)
  41 #else /* sn2 is the biggest case, so we use that if !DIG */
  42 # define MAX_PHYSNODE_ID        2048
  43 # define NR_NODE_MEMBLKS        (MAX_NUMNODES * 4)
  44 #endif
  45
  46 #else /* CONFIG_NUMA */
  47 # define NR_NODE_MEMBLKS        (MAX_NUMNODES * 4)
  48 #endif /* CONFIG_NUMA */
  49
  50 #endif /* _ASM_IA64_MMZONE_H */