projects / mirror_ubuntu-bionic-kernel.git / blame
| Commit | Line | Data |
|---|---|---|
| b2441318 | 1 | /* SPDX-License-Identifier: GPL-2.0 */ |
| f86635fa | 2 | /* |
| 4dcc2a4d | 3 | * Copyright IBM Corp. 2007, 2012 |
| f86635fa PO |
4 | * Author(s): Peter Oberparleiter <peter.oberparleiter@de.ibm.com> |
| 5 | */ | |
| e5854a58 | 6 | #ifndef _ASM_S390_CHPID_H |
| 87d2f5e3 | 7 | #define _ASM_S390_CHPID_H |
| f86635fa | 8 | |
| 9807f759 | 9 | #include <uapi/asm/chpid.h> |
| 626f3117 AB |
10 | #include <asm/cio.h> |
| 11 | ||
| 2bf29df7 SO |
12 | struct channel_path_desc { |
| 13 | u8 flags; | |
| 14 | u8 lsn; | |
| 15 | u8 desc; | |
| 16 | u8 chpid; | |
| 17 | u8 swla; | |
| 18 | u8 zeroes; | |
| 19 | u8 chla; | |
| 20 | u8 chpp; | |
| 21 | } __packed; | |
| 22 | ||
| f86635fa PO |
23 | static inline void chp_id_init(struct chp_id *chpid) |
| 24 | { | |
| 25 | memset(chpid, 0, sizeof(struct chp_id)); | |
| 26 | } | |
| 27 | ||
| 28 | static inline int chp_id_is_equal(struct chp_id *a, struct chp_id *b) | |
| 29 | { | |
| 30 | return (a->id == b->id) && (a->cssid == b->cssid); | |
| 31 | } | |
| 32 | ||
| 33 | static inline void chp_id_next(struct chp_id *chpid) | |
| 34 | { | |
| 35 | if (chpid->id < __MAX_CHPID) | |
| 36 | chpid->id++; | |
| 37 | else { | |
| 38 | chpid->id = 0; | |
| 39 | chpid->cssid++; | |
| 40 | } | |
| 41 | } | |
| 42 | ||
| 43 | static inline int chp_id_is_valid(struct chp_id *chpid) | |
| 44 | { | |
| 45 | return (chpid->cssid <= __MAX_CSSID); | |
| 46 | } | |
| 47 | ||
| 48 | ||
| 49 | #define chp_id_for_each(c) \ | |
| 50 | for (chp_id_init(c); chp_id_is_valid(c); chp_id_next(c)) | |
| e5854a58 | 51 | #endif /* _ASM_S390_CHPID_H */ |