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