include/asm-s390/types.h

   1 /*
   2  *  include/asm-s390/types.h
   3  *
   4  *  S390 version
   5  *
   6  *  Derived from "include/asm-i386/types.h"
   7  */
   8
   9 #ifndef _S390_TYPES_H
  10 #define _S390_TYPES_H
  11
  12 #ifndef __s390x__
  13 # include <asm-generic/int-ll64.h>
  14 #else
  15 # include <asm-generic/int-l64.h>
  16 #endif
  17
  18 #ifndef __ASSEMBLY__
  19
  20 typedef unsigned short umode_t;
  21
  22 /* A address type so that arithmetic can be done on it & it can be upgraded to
  23    64 bit when necessary
  24 */
  25 typedef unsigned long addr_t;
  26 typedef __signed__ long saddr_t;
  27
  28 #endif /* __ASSEMBLY__ */
  29
  30 /*
  31  * These aren't exported outside the kernel to avoid name space clashes
  32  */
  33 #ifdef __KERNEL__
  34
  35 #ifndef __s390x__
  36 #define BITS_PER_LONG 32
  37 #else
  38 #define BITS_PER_LONG 64
  39 #endif
  40
  41 #ifndef __ASSEMBLY__
  42
  43 typedef u64 dma64_addr_t;
  44 #ifdef __s390x__
  45 /* DMA addresses come in 32-bit and 64-bit flavours. */
  46 typedef u64 dma_addr_t;
  47 #else
  48 typedef u32 dma_addr_t;
  49 #endif
  50
  51 #ifndef __s390x__
  52 typedef union {
  53         unsigned long long pair;
  54         struct {
  55                 unsigned long even;
  56                 unsigned long odd;
  57         } subreg;
  58 } register_pair;
  59
  60 #endif /* ! __s390x__   */
  61 #endif /* __ASSEMBLY__  */
  62 #endif /* __KERNEL__    */
  63 #endif /* _S390_TYPES_H */