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