include/asm-x86/dmi.h

   1 #ifndef _ASM_X86_DMI_H
   2 #define _ASM_X86_DMI_H
   3
   4 #include <asm/io.h>
   5
   6 #ifdef CONFIG_X86_32
   7
   8 /* Use early IO mappings for DMI because it's initialized early */
   9 #define dmi_ioremap bt_ioremap
  10 #define dmi_iounmap bt_iounmap
  11 #define dmi_alloc alloc_bootmem
  12
  13 #else /* CONFIG_X86_32 */
  14
  15 #define DMI_MAX_DATA 2048
  16
  17 extern int dmi_alloc_index;
  18 extern char dmi_alloc_data[DMI_MAX_DATA];
  19
  20 /* This is so early that there is no good way to allocate dynamic memory.
  21    Allocate data in an BSS array. */
  22 static inline void *dmi_alloc(unsigned len)
  23 {
  24         int idx = dmi_alloc_index;
  25         if ((dmi_alloc_index += len) > DMI_MAX_DATA)
  26                 return NULL;
  27         return dmi_alloc_data + idx;
  28 }
  29
  30 #define dmi_ioremap early_ioremap
  31 #define dmi_iounmap early_iounmap
  32
  33 #endif
  34
  35 #endif