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/*
 2 *  drivers/s390/cio/chpid.h
 3 *
 4 *    Copyright IBM Corp. 2007
 5 *    Author(s): Peter Oberparleiter <peter.oberparleiter@de.ibm.com>
 6 */
 7
 8#ifndef _ASM_S390_CHPID_H
 9#define _ASM_S390_CHPID_H _ASM_S390_CHPID_H
10
11#include <linux/string.h>
12#include <linux/types.h>
13
14#define __MAX_CHPID 255
15
16struct chp_id {
17	u8 reserved1;
18	u8 cssid;
19	u8 reserved2;
20	u8 id;
21} __attribute__((packed));
22
23#ifdef __KERNEL__
24#include <asm/cio.h>
 
25
26static inline void chp_id_init(struct chp_id *chpid)
27{
28	memset(chpid, 0, sizeof(struct chp_id));
29}
30
31static 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
36static 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
46static 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))
54#endif /* __KERNEL */
55
56#endif /* _ASM_S390_CHPID_H */