LXR linux/arch/s390/include/asm/schid.h

   1#ifndef ASM_SCHID_H
   2#define ASM_SCHID_H
   3
   4#include <linux/types.h>
   5
   6struct subchannel_id {
   7        __u32 cssid : 8;
   8        __u32 : 4;
   9        __u32 m : 1;
  10        __u32 ssid : 2;
  11        __u32 one : 1;
  12        __u32 sch_no : 16;
  13} __attribute__ ((packed, aligned(4)));
  14
  15#ifdef __KERNEL__
  16#include <linux/string.h>
  17
  18/* Helper function for sane state of pre-allocated subchannel_id. */
  19static inline void
  20init_subchannel_id(struct subchannel_id *schid)
  21{
  22        memset(schid, 0, sizeof(struct subchannel_id));
  23        schid->one = 1;
  24}
  25
  26static inline int
  27schid_equal(struct subchannel_id *schid1, struct subchannel_id *schid2)
  28{
  29        return !memcmp(schid1, schid2, sizeof(struct subchannel_id));
  30}
  31
  32#endif /* __KERNEL__ */
  33
  34#endif /* ASM_SCHID_H */
  35