Commit | Line | Data |
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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 */ |