arch/s390/include/asm/schid.h

   1 #ifndef ASM_SCHID_H
   2 #define ASM_SCHID_H
   3
   4 struct subchannel_id {
   5         __u32 cssid : 8;
   6         __u32 : 4;
   7         __u32 m : 1;
   8         __u32 ssid : 2;
   9         __u32 one : 1;
  10         __u32 sch_no : 16;
  11 } __attribute__ ((packed, aligned(4)));
  12
  13 #ifdef __KERNEL__
  14 #include <linux/string.h>
  15
  16 /* Helper function for sane state of pre-allocated subchannel_id. */
  17 static inline void
  18 init_subchannel_id(struct subchannel_id *schid)
  19 {
  20         memset(schid, 0, sizeof(struct subchannel_id));
  21         schid->one = 1;
  22 }
  23
  24 static inline int
  25 schid_equal(struct subchannel_id *schid1, struct subchannel_id *schid2)
  26 {
  27         return !memcmp(schid1, schid2, sizeof(struct subchannel_id));
  28 }
  29
  30 #endif /* __KERNEL__ */
  31
  32 #endif /* ASM_SCHID_H */