| /* |
| * 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 |
| |
| #include <linux/string.h> |
| #include <linux/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 */ |
