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/* SPDX-License-Identifier: GPL-2.0 */
/*
* Copyright IBM Corp. 2007, 2012
* Author(s): Peter Oberparleiter <peter.oberparleiter@de.ibm.com>
*/
#ifndef _ASM_S390_CHPID_H
#define _ASM_S390_CHPID_H
#include <uapi/asm/chpid.h>
#include <asm/cio.h>
struct channel_path_desc_fmt0 {
u8 flags;
u8 lsn;
u8 desc;
u8 chpid;
u8 swla;
u8 zeroes;
u8 chla;
u8 chpp;
} __packed;
static inline void chp_id_init(struct chp_id *chpid)
{
memset(chpid, 0, sizeof(struct chp_id));
}
static inline int chp_id_is_equal(struct chp_id *a, struct chp_id *b)
{
return (a->id == b->id) && (a->cssid == b->cssid);
}
static inline void chp_id_next(struct chp_id *chpid)
{
if (chpid->id < __MAX_CHPID)
chpid->id++;
else {
chpid->id = 0;
chpid->cssid++;
}
}
static inline int chp_id_is_valid(struct chp_id *chpid)
{
return (chpid->cssid <= __MAX_CSSID);
}
#define chp_id_for_each(c) \
for (chp_id_init(c); chp_id_is_valid(c); chp_id_next(c))
#endif /* _ASM_S390_CHPID_H */