include/asm-x86_64/dmi.h

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