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- /* SPDX-License-Identifier: GPL-2.0 */
- /*
- * Copyright IBM Corp. 2007, 2012
- * Author(s): Peter Oberparleiter <[email protected]>
- */
- #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 */
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