include/asm-mips/mmzone.h

   1 /*
   2  * Written by Kanoj Sarcar (kanoj@sgi.com) Aug 99
   3  * Rewritten for Linux 2.6 by Christoph Hellwig (hch@lst.de) Jan 2004
   4  */
   5 #ifndef _ASM_MMZONE_H_
   6 #define _ASM_MMZONE_H_
   7
   8 #include <linux/config.h>
   9 #include <asm/page.h>
  10 #include <mmzone.h>
  11
  12 #ifdef CONFIG_DISCONTIGMEM
  13
  14 #define kvaddr_to_nid(kvaddr)   pa_to_nid(__pa(kvaddr))
  15 #define pfn_to_nid(pfn)         pa_to_nid((pfn) << PAGE_SHIFT)
  16
  17 #define pfn_valid(pfn)                                          \
  18 ({                                                              \
  19         unsigned long __pfn = (pfn);                            \
  20         int __n = pfn_to_nid(__pfn);                            \
  21         ((__n >= 0) ? (__pfn < NODE_DATA(__n)->node_start_pfn + \
  22                        NODE_DATA(__n)->node_spanned_pages) : 0);\
  23 })
  24
  25 /* XXX: FIXME -- wli */
  26 #define kern_addr_valid(addr)   (0)
  27
  28 #endif /* CONFIG_DISCONTIGMEM */
  29
  30 #endif /* _ASM_MMZONE_H_ */