/* * drivers/s390/cio/chpid.h * * Copyright IBM Corp. 2007 * Author(s): Peter Oberparleiter <peter.oberparleiter@de.ibm.com> */ #ifndef _ASM_S390_CHPID_H #define _ASM_S390_CHPID_H _ASM_S390_CHPID_H #include <linux/string.h> #include <asm/types.h> #define __MAX_CHPID 255 struct chp_id { u8 reserved1; u8 cssid; u8 reserved2; u8 id; } __attribute__((packed)); #ifdef __KERNEL__ #include <asm/cio.h> static inline void chp_id_init(struct chp_id *chpid) { memset(chpid, 0, sizeof(struct chp_id)); } static inline int chp_id_is_equal(struct chp_id *a, struct chp_id *b) { return (a->id == b->id) && (a->cssid == b->cssid); } static inline void chp_id_next(struct chp_id *chpid) { if (chpid->id < __MAX_CHPID) chpid->id++; else { chpid->id = 0; chpid->cssid++; } } static inline int chp_id_is_valid(struct chp_id *chpid) { return (chpid->cssid <= __MAX_CSSID); } #define chp_id_for_each(c) \ for (chp_id_init(c); chp_id_is_valid(c); chp_id_next(c)) #endif /* __KERNEL */ #endif /* _ASM_S390_CHPID_H */