1/* 2 * drivers/s390/cio/chpid.h 3 * 4 * Copyright IBM Corp. 2007 5 * Author(s): Peter Oberparleiter <peter.oberparleiter@de.ibm.com> 6 */ 7 8#ifndef _ASM_S390_CHPID_H 9#define _ASM_S390_CHPID_H _ASM_S390_CHPID_H 10 11#include <linux/string.h> 12#include <asm/types.h> 13#include <asm/cio.h> 14 15#define __MAX_CHPID 255 16 17struct chp_id { 18 u8 reserved1; 19 u8 cssid; 20 u8 reserved2; 21 u8 id; 22} __attribute__((packed)); 23 24static inline void chp_id_init(struct chp_id *chpid) 25{ 26 memset(chpid, 0, sizeof(struct chp_id)); 27} 28 29static inline int chp_id_is_equal(struct chp_id *a, struct chp_id *b) 30{ 31 return (a->id == b->id) && (a->cssid == b->cssid); 32} 33 34static inline void chp_id_next(struct chp_id *chpid) 35{ 36 if (chpid->id < __MAX_CHPID) 37 chpid->id++; 38 else { 39 chpid->id = 0; 40 chpid->cssid++; 41 } 42} 43 44static inline int chp_id_is_valid(struct chp_id *chpid) 45{ 46 return (chpid->cssid <= __MAX_CSSID); 47} 48 49 50#define chp_id_for_each(c) \ 51 for (chp_id_init(c); chp_id_is_valid(c); chp_id_next(c)) 52 53#endif /* _ASM_S390_CHPID_H */ 54