projects / mirror_ubuntu-bionic-kernel.git / blame
| Commit | Line | Data |
|---|---|---|
| f86635fa PO |
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 | ||
| e5854a58 PO |
8 | #ifndef _ASM_S390_CHPID_H |
| 9 | #define _ASM_S390_CHPID_H _ASM_S390_CHPID_H | |
| f86635fa PO |
10 | |
| 11 | #include <linux/string.h> | |
| 12 | #include <asm/types.h> | |
| e5854a58 PO |
13 | |
| 14 | #define __MAX_CHPID 255 | |
| f86635fa PO |
15 | |
| 16 | struct chp_id { | |
| 17 | u8 reserved1; | |
| 18 | u8 cssid; | |
| 19 | u8 reserved2; | |
| 20 | u8 id; | |
| 21 | } __attribute__((packed)); | |
| 22 | ||
| 626f3117 AB |
23 | #ifdef __KERNEL__ |
| 24 | #include <asm/cio.h> | |
| 25 | ||
| f86635fa PO |
26 | static inline void chp_id_init(struct chp_id *chpid) |
| 27 | { | |
| 28 | memset(chpid, 0, sizeof(struct chp_id)); | |
| 29 | } | |
| 30 | ||
| 31 | static inline int chp_id_is_equal(struct chp_id *a, struct chp_id *b) | |
| 32 | { | |
| 33 | return (a->id == b->id) && (a->cssid == b->cssid); | |
| 34 | } | |
| 35 | ||
| 36 | static inline void chp_id_next(struct chp_id *chpid) | |
| 37 | { | |
| 38 | if (chpid->id < __MAX_CHPID) | |
| 39 | chpid->id++; | |
| 40 | else { | |
| 41 | chpid->id = 0; | |
| 42 | chpid->cssid++; | |
| 43 | } | |
| 44 | } | |
| 45 | ||
| 46 | static inline int chp_id_is_valid(struct chp_id *chpid) | |
| 47 | { | |
| 48 | return (chpid->cssid <= __MAX_CSSID); | |
| 49 | } | |
| 50 | ||
| 51 | ||
| 52 | #define chp_id_for_each(c) \ | |
| 53 | for (chp_id_init(c); chp_id_is_valid(c); chp_id_next(c)) | |
| 9d92a7e1 | 54 | #endif /* __KERNEL */ |
| f86635fa | 55 | |
| e5854a58 | 56 | #endif /* _ASM_S390_CHPID_H */ |