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51 lines
979 B
51 lines
979 B
/* SPDX-License-Identifier: GPL-2.0 */ |
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/* |
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* Copyright IBM Corp. 2007, 2012 |
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* Author(s): Peter Oberparleiter <[email protected]> |
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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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#include <uapi/asm/chpid.h> |
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#include <asm/cio.h> |
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struct channel_path_desc_fmt0 { |
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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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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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