LXR linux/arch/x86/include/asm/dmi.h

   1#ifndef _ASM_X86_DMI_H
   2#define _ASM_X86_DMI_H
   3
   4#include <asm/io.h>
   5
   6#define DMI_MAX_DATA 2048
   7
   8extern int dmi_alloc_index;
   9extern char dmi_alloc_data[DMI_MAX_DATA];
  10
  11/* This is so early that there is no good way to allocate dynamic memory.
  12   Allocate data in an BSS array. */
  13static inline void *dmi_alloc(unsigned len)
  14{
  15        int idx = dmi_alloc_index;
  16        if ((dmi_alloc_index + len) > DMI_MAX_DATA)
  17                return NULL;
  18        dmi_alloc_index += len;
  19        return dmi_alloc_data + idx;
  20}
  21
  22/* Use early IO mappings for DMI because it's initialized early */
  23#define dmi_ioremap early_ioremap
  24#define dmi_iounmap early_iounmap
  25
  26#endif /* _ASM_X86_DMI_H */
  27