2024-09-09 08:52:07 +00:00
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/*
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2024-09-09 08:57:42 +00:00
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* Copyright IBM Corp. 2007, 2012
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2024-09-09 08:52:07 +00:00
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* Author(s): Peter Oberparleiter <peter.oberparleiter@de.ibm.com>
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*/
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#ifndef _ASM_S390_CHPID_H
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#define _ASM_S390_CHPID_H
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2024-09-09 08:57:42 +00:00
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#include <uapi/asm/chpid.h>
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2024-09-09 08:52:07 +00:00
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#include <asm/cio.h>
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2024-09-09 08:57:42 +00:00
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struct channel_path_desc {
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u8 flags;
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u8 lsn;
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u8 desc;
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u8 chpid;
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u8 swla;
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u8 zeroes;
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u8 chla;
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u8 chpp;
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} __packed;
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2024-09-09 08:52:07 +00:00
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static inline void chp_id_init(struct chp_id *chpid)
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{
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memset(chpid, 0, sizeof(struct chp_id));
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}
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static inline int chp_id_is_equal(struct chp_id *a, struct chp_id *b)
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{
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return (a->id == b->id) && (a->cssid == b->cssid);
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}
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static inline void chp_id_next(struct chp_id *chpid)
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{
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if (chpid->id < __MAX_CHPID)
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chpid->id++;
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else {
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chpid->id = 0;
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chpid->cssid++;
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}
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}
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static inline int chp_id_is_valid(struct chp_id *chpid)
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{
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return (chpid->cssid <= __MAX_CSSID);
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}
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#define chp_id_for_each(c) \
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for (chp_id_init(c); chp_id_is_valid(c); chp_id_next(c))
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#endif /* _ASM_S390_CHPID_H */
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