arch/s390/include/asm/chpid.h

   1 /*
   2  *    Copyright IBM Corp. 2007, 2012
   3  *    Author(s): Peter Oberparleiter <peter.oberparleiter@de.ibm.com>
   4  */
   5 #ifndef _ASM_S390_CHPID_H
   6 #define _ASM_S390_CHPID_H
   7
   8 #include <uapi/asm/chpid.h>
   9 #include <asm/cio.h>
  10
  11 static inline void chp_id_init(struct chp_id *chpid)
  12 {
  13         memset(chpid, 0, sizeof(struct chp_id));
  14 }
  15
  16 static inline int chp_id_is_equal(struct chp_id *a, struct chp_id *b)
  17 {
  18         return (a->id == b->id) && (a->cssid == b->cssid);
  19 }
  20
  21 static inline void chp_id_next(struct chp_id *chpid)
  22 {
  23         if (chpid->id < __MAX_CHPID)
  24                 chpid->id++;
  25         else {
  26                 chpid->id = 0;
  27                 chpid->cssid++;
  28         }
  29 }
  30
  31 static inline int chp_id_is_valid(struct chp_id *chpid)
  32 {
  33         return (chpid->cssid <= __MAX_CSSID);
  34 }
  35
  36
  37 #define chp_id_for_each(c) \
  38         for (chp_id_init(c); chp_id_is_valid(c); chp_id_next(c))
  39 #endif /* _ASM_S390_CHPID_H */