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6004a7029c
zpwr displays power readings of a partition and central processing complex (CPC) from power information block (pib). pib is retrieved by issuing diag324 ioctl to /dev/diag device. Reviewed-by: Jan Höppner <hoeppner@linux.ibm.com> Signed-off-by: Sumanth Korikkar <sumanthk@linux.ibm.com> Signed-off-by: Jan Höppner <hoeppner@linux.ibm.com>
47 lines
857 B
C
47 lines
857 B
C
/*
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* zpwr - display power readings of s390 computing environment.
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*
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* ioctls for diag324 and structures definitions.
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*
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* Copyright IBM Corp. 2025
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*
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* s390-tools is free software; you can redistribute it and/or modify
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* it under the terms of the MIT license. See LICENSE for details.
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*/
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#ifndef ZPWR_H
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#define ZPWR_H
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#include <linux/types.h>
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#define DIAG_MAGIC_STR 'D'
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struct pib {
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__u32 : 8;
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__u32 num : 8;
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__u32 len : 16;
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__u32 : 24;
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__u32 hlen : 8;
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__u64 : 64;
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__u64 intv;
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__u8 r[];
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} __packed;
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struct pib_prologue {
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__u64 format : 4;
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__u64 : 20;
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__u64 len : 8;
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__u64 : 32;
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};
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struct diag324_pib {
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__u64 address;
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__u64 sequence;
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};
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/* Diag ioctl definitions */
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#define DIAG324_GET_PIBBUF _IOWR(DIAG_MAGIC_STR, 0x77, struct diag324_pib)
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#define DIAG324_GET_PIBLEN _IOR(DIAG_MAGIC_STR, 0x78, size_t)
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#endif /* ZPWR_H */
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