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Some NVDIMMs, in addition to providing an indication of whether the previous shutdown was clean, also provide a running count of lifetime dirty-shutdown events for the device. In anticipation of this functionality appearing on more devices arrange for the nfit driver to retrieve / cache this data at DIMM discovery time, and export it via sysfs. Reviewed-by: Keith Busch <keith.busch@intel.com> Signed-off-by: Dan Williams <dan.j.williams@intel.com>
38 lines
777 B
C
38 lines
777 B
C
// SPDX-License-Identifier: GPL-2.0
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/*
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* Copyright(c) 2018 Intel Corporation. All rights reserved.
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* Intel specific definitions for NVDIMM Firmware Interface Table - NFIT
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*/
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#ifndef _NFIT_INTEL_H_
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#define _NFIT_INTEL_H_
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#define ND_INTEL_SMART 1
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#define ND_INTEL_SMART_SHUTDOWN_COUNT_VALID (1 << 5)
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#define ND_INTEL_SMART_SHUTDOWN_VALID (1 << 10)
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struct nd_intel_smart {
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u32 status;
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union {
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struct {
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u32 flags;
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u8 reserved0[4];
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u8 health;
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u8 spares;
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u8 life_used;
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u8 alarm_flags;
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u16 media_temperature;
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u16 ctrl_temperature;
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u32 shutdown_count;
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u8 ait_status;
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u16 pmic_temperature;
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u8 reserved1[8];
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u8 shutdown_state;
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u32 vendor_size;
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u8 vendor_data[92];
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} __packed;
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u8 data[128];
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};
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} __packed;
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#endif
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