1/* SPDX-License-Identifier: GPL-2.0 */
 2/*
 3 *    Copyright IBM Corp. 2007, 2012
 4 *    Author(s): Peter Oberparleiter <peter.oberparleiter@de.ibm.com>
 5 */
 6#ifndef _ASM_S390_CHPID_H
 7#define _ASM_S390_CHPID_H
 8
 9#include <uapi/asm/chpid.h>
10#include <asm/cio.h>
11
12struct channel_path_desc_fmt0 {
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
23static inline void chp_id_init(struct chp_id *chpid)
24{
25	memset(chpid, 0, sizeof(struct chp_id));
26}
27
28static 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
33static 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
43static 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))
51#endif /* _ASM_S390_CHPID_H */

 1/* SPDX-License-Identifier: GPL-2.0 */
 2/*
 3 *    Copyright IBM Corp. 2007, 2012
 4 *    Author(s): Peter Oberparleiter <peter.oberparleiter@de.ibm.com>
 5 */
 6#ifndef _ASM_S390_CHPID_H
 7#define _ASM_S390_CHPID_H
 8
 9#include <uapi/asm/chpid.h>
10#include <asm/cio.h>
11
12struct channel_path_desc_fmt0 {
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
23static inline void chp_id_init(struct chp_id *chpid)
24{
25	memset(chpid, 0, sizeof(struct chp_id));
26}
27
28static 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
33static 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
43static 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))
51#endif /* _ASM_S390_CHPID_H */