mirror of
https://opendev.org/x/pyghmi
synced 2026-09-26 09:44:06 +00:00
Jarrod Johnson
990a526a8d
The change to handle lun in decoding broke construction of the acknowledgemennt in the PET path, fix to go back to previous PET handling. Change-Id: Ib20e67cd9462d846cb3d925a5c8989eef6140e8b
586 lines
22 KiB
Python
586 lines
22 KiB
Python
# Copyright 2016 Lenovo
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#
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# Licensed under the Apache License, Version 2.0 (the "License");
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# you may not use this file except in compliance with the License.
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# You may obtain a copy of the License at
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#
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# http://www.apache.org/licenses/LICENSE-2.0
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#
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# Unless required by applicable law or agreed to in writing, software
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# distributed under the License is distributed on an "AS IS" BASIS,
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# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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# See the License for the specific language governing permissions and
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# limitations under the License.
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import struct
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import time
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import pyghmi.constants as pygconst
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import pyghmi.exceptions as pygexc
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try:
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range = xrange
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except NameError:
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pass
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try:
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buffer
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except NameError:
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buffer = memoryview
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psucfg_errors = {
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0: 'Vendor mismatch',
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1: 'Revision mismatch',
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2: 'Processor missing', # e.g. pluggable CPU VRMs...
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3: 'Insufficient power',
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4: 'Voltage mismatch',
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}
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firmware_progress = {
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0: 'Unspecified',
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1: 'Memory initialization',
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2: 'Disk initialization',
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3: 'Non-primary Processor initialization',
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4: 'User authentication',
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5: 'In setup',
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6: 'USB initialization',
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7: 'PCI initialization',
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8: 'Option ROM initialization',
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9: 'Video initialization',
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0xa: 'Cache initialization',
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0xb: 'SMBus initialization',
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0xc: 'Keyboard initialization',
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0xd: 'Embedded controller initialization',
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0xe: 'Docking station attachment',
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0xf: 'Docking station enabled',
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0x10: 'Docking station ejection',
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0x11: 'Docking station disabled',
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0x12: 'Waking OS',
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0x13: 'Starting OS boot',
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0x14: 'Baseboard initialization',
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0x16: 'Floppy initialization',
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0x17: 'Keyboard test',
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0x18: 'Pointing device test',
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0x19: 'Primary processor initialization',
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}
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firmware_errors = {
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0: 'Unspecified',
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1: 'No memory installed',
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2: 'All memory failed',
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3: 'Unrecoverable disk failure',
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4: 'Unrecoverable board failure',
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5: 'Unrecoverable diskette failure',
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6: 'Unrecoverable storage controller failure',
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7: 'Unrecoverable keyboard failure', # Keyboard error, press
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# any key to continue..
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8: 'Removable boot media not found',
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9: 'Video adapter failure',
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0xa: 'No video device',
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0xb: 'Firmware corruption detected',
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0xc: 'CPU voltage mismatch',
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0xd: 'CPU speed mismatch',
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}
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auxlog_actions = {
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0: 'entry added',
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1: 'entry added (could not map to standard)',
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2: 'entry added with corresponding standard events',
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3: 'log cleared',
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4: 'log disabled',
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5: 'log enabled',
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}
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restart_causes = {
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0: 'Unknown',
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1: 'Remote request',
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2: 'Reset button',
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3: 'Power button',
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4: 'Watchdog',
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5: 'OEM',
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6: 'Power restored',
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7: 'Power restored',
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8: 'Reset due to event',
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9: 'Cycle due to event',
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0xa: 'OS reset',
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0xb: 'Timer wake',
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}
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slot_types = {
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0: 'PCI',
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1: 'Drive Array',
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2: 'External connector',
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3: 'Docking',
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4: 'Other',
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5: 'Entity ID',
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6: 'AdvancedTCA',
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7: 'Memory',
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8: 'Fan',
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9: 'PCIe',
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10: 'SCSI',
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11: 'SATA/SAS',
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12: 'USB',
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}
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power_states = {
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0: 'S0',
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1: 'S1',
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2: 'S2',
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3: 'S3',
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4: 'S4',
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5: 'S5',
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6: 'S4 or S5',
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7: 'G3',
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8: 'S1, S2, or S3',
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9: 'G1',
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0xa: 'S5',
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0xb: 'on',
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0xc: 'off',
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}
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watchdog_boot_phases = {
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1: 'Firmware',
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2: 'Firmware',
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3: 'OS Load',
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4: 'OS',
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5: 'OEM',
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}
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version_changes = {
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1: 'Device ID',
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2: 'Management controller firmware',
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3: 'Management controller revision',
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4: 'Management conroller manufacturer',
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5: 'IPMI version',
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6: 'Management controller firmware',
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7: 'Management controller boot block',
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8: 'Management controller firmware',
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9: 'System Firmware (UEFI/BIOS)',
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0xa: 'SMBIOS',
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0xb: 'OS',
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0xc: 'OS Loader',
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0xd: 'Diagnostics',
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0xe: 'Management agent',
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0xf: 'Management application',
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0x10: 'Management middleware',
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0x11: 'FPGA',
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0x12: 'FRU',
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0x13: 'FRU',
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0x14: 'Equivalent FRU',
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0x15: 'Updated FRU',
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0x16: 'Older FRU',
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0x17: 'Hardware (switch/jumper)',
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}
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fru_states = {
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0: 'Normal',
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1: 'Externally requested',
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2: 'Latch',
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3: 'Hot swap',
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4: 'Internal action',
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5: 'Lost communication',
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6: 'Lost communication',
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7: 'Unexpected removal',
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8: 'Operator',
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9: 'Unable to compute IPMB address',
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0xa: 'Unexpected deactivation',
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}
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def decode_eventdata(sensor_type, offset, eventdata, event_consts, sdr):
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"""Decode extra event data from an alert or log
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Provide a textual summary of eventdata per descriptions in
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Table 42-3 of the specification. This is for sensor specific
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offset events only.
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:param sensor_type: The sensor type number from the event
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:param offset: Sensor specific offset
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:param eventdata: The three bytes from the log or alert
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:param event_consts: event definition including severity.
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:param sdr: The sdr locator entry to help clarify how to parse data
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"""
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if sensor_type == 5 and offset == 4: # link loss, indicates which port
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return 'Port {0}'.format(eventdata[1])
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elif sensor_type == 8 and offset == 6: # PSU cfg error
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errtype = eventdata[2] & 0b1111
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return psucfg_errors.get(errtype, 'Unknown')
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elif sensor_type == 0xC6:
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return 'PSU Redundancy'
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elif sensor_type == 0xc and offset == 8: # Memory spare
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return 'Module {0}'.format(eventdata[2])
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elif sensor_type == 0xf:
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if offset == 0: # firmware error
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return firmware_errors.get(eventdata[1], 'Unknown')
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elif offset in (1, 2):
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return firmware_progress.get(eventdata[1], 'Unknown')
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elif sensor_type == 0x10:
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if offset == 0: # Correctable error logging on a specific memory part
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return 'Module {0}'.format(eventdata[1])
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elif offset == 1:
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return 'Reading type {0:02X}h, offset {1:02X}h'.format(
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eventdata[1], eventdata[2] & 0b1111)
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elif offset == 5:
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return '{0}%'.format(eventdata[2])
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elif offset == 6:
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return 'Processor {0}'.format(eventdata[1])
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elif sensor_type == 0x12:
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if offset == 3:
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action = (eventdata[1] & 0b1111000) >> 4
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return auxlog_actions.get(action, 'Unknown')
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elif offset == 4:
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sysactions = []
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if eventdata[1] & 0b1 << 5:
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sysactions.append('NMI')
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if eventdata[1] & 0b1 << 4:
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sysactions.append('OEM action')
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if eventdata[1] & 0b1 << 3:
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sysactions.append('Power Cycle')
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if eventdata[1] & 0b1 << 2:
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sysactions.append('Reset')
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if eventdata[1] & 0b1 << 1:
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sysactions.append('Power Down')
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if eventdata[1] & 0b1:
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sysactions.append('Alert')
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return ','.join(sysactions)
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elif offset == 5: # Clock change event, either before or after
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if eventdata[1] & 0b10000000:
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return 'After'
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else:
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return 'Before'
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elif sensor_type == 0x19 and offset == 0:
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return 'Requested {0} while {1}'.format(eventdata[1], eventdata[2])
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elif sensor_type == 0x1d and offset == 7:
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return restart_causes.get(eventdata[1], 'Unknown')
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elif sensor_type == 0x21:
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return '{0} {1}'.format(slot_types.get(eventdata[1], 'Unknown'),
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eventdata[2])
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elif sensor_type == 0x23:
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phase = eventdata[1] & 0b1111
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return watchdog_boot_phases.get(phase, 'Unknown')
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elif sensor_type == 0x28:
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if offset == 4:
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return 'Sensor {0}'.format(eventdata[1])
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elif offset == 5:
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islogical = (eventdata[1] & 0b10000000)
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if islogical:
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if eventdata[2] in sdr.fru:
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return sdr.fru[eventdata[2]].fru_name
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else:
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return 'FRU {0}'.format(eventdata[2])
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elif sensor_type == 0x2a and offset == 3:
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return 'User {0}'.format(eventdata[1])
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elif sensor_type == 0x2b:
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return version_changes.get(eventdata[1], 'Unknown')
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elif sensor_type == 0x2c:
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cause = (eventdata[1] & 0b11110000) >> 4
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cause = fru_states.get(cause, 'Unknown')
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oldstate = eventdata[1] & 0b1111
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if oldstate != offset:
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try:
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cause += '(change from {0})'.format(
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event_consts.sensor_type_offsets[0x2c][oldstate]['desc'])
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except KeyError:
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pass
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def _fix_sel_time(records, ipmicmd):
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timefetched = False
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rsp = None
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while not timefetched:
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try:
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rsp = ipmicmd.xraw_command(netfn=0xa, command=0x48)
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timefetched = True
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except pygexc.IpmiException as pi:
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if pi.ipmicode == 0x81:
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continue
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raise
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# The specification declares an epoch and all that, but we really don't
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# care. We instead just focus on differences from the 'present'
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nowtime = struct.unpack_from('<I', rsp['data'])[0]
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correctednowtime = nowtime
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if nowtime < 0x20000000:
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correctearly = True
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inpreinit = True
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else:
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correctearly = False
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inpreinit = False
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newtimestamp = 0
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lasttimestamp = None
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trimindexes = []
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correctionenabled = True
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for index in reversed(range(len(records))):
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record = records[index]
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if 'timecode' not in record or record['timecode'] == 0xffffffff:
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continue
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if ('event' in record and record['event'] == 'Clock time change'
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and record['event_data'] == 'After'):
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if (lasttimestamp is not None
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and record['timecode'] > lasttimestamp):
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# if the timestamp did something impossible, declare the rest
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# of history not meaningfully correctable
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correctionenabled = False
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newtimestamp = 0
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continue
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newtimestamp = record['timecode']
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trimindexes.append(index)
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elif ('event' in record and record['event'] == 'Clock time change'
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and record['event_data'] == 'Before'):
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if not correctionenabled:
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continue
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if newtimestamp:
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if record['timecode'] < 0x20000000:
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correctearly = True
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nowtime = correctednowtime
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# we want time that occurred before this point to get the delta
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# added to it to catch up
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correctednowtime += newtimestamp - record['timecode']
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newtimestamp = 0
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trimindexes.append(index)
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else:
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# clean up after potentially broken time sync pairs
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newtimestamp = 0
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if record['timecode'] < 0x20000000: # uptime timestamp
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if not correctearly or not correctionenabled:
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correctednowtime = nowtime
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continue
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if (lasttimestamp is not None
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and record['timecode'] > lasttimestamp):
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# Time has gone backwards in pre-init, no hope for
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# accurate time
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correctearly = False
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correctionenabled = False
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correctednowtime = nowtime
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continue
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inpreinit = True
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lasttimestamp = record['timecode']
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age = correctednowtime - record['timecode']
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record['timestamp'] = time.strftime(
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'%Y-%m-%dT%H:%M:%S', time.localtime(time.time() - age))
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else:
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# We are in 'normal' time, assume we cannot go to
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# pre-init time and do corrections unless time sync events
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# guide us in safely
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if (lasttimestamp is not None
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and record['timecode'] > lasttimestamp):
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# Time has gone backwards, without a clock sync
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# give up any attempt to correct from this point back...
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correctionenabled = False
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if inpreinit:
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inpreinit = False
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# We were in pre-init, now in real time, reset the
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# time correction factor to the last stored
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# 'wall clock' correction
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correctednowtime = nowtime
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correctearly = False
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lasttimestamp = record['timecode']
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if not correctionenabled or correctednowtime < 0x20000000:
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# We can't correct time when the correction factor is
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# rooted in a pre-init timestamp, just convert
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record['timestamp'] = time.strftime(
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'%Y-%m-%dT%H:%M:%S', time.localtime(
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record['timecode']))
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else:
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age = correctednowtime - record['timecode']
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record['timestamp'] = time.strftime(
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'%Y-%m-%dT%H:%M:%S', time.localtime(
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time.time() - age))
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for index in trimindexes:
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del records[index]
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class EventHandler(object):
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"""IPMI Event Processor
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This class provides facilities for processing alerts and event log
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data. This can be used to aid in pulling historical event data
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from a BMC or as part of a trap handler to translate the traps into
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manageable data.
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:param sdr: An SDR object (per pyghmi.ipmi.sdr) matching the target BMC SDR
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:param ipmicmd: An ipmi command object to fetch data live
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"""
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def __init__(self, sdr, ipmicmd):
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self._sdr = sdr
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self._ipmicmd = ipmicmd
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self.event_consts = ipmicmd.get_event_constants()
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def _populate_event(self, deassertion, event, event_data, event_type,
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sensor_type, sensorid):
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event['component_id'] = sensorid
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try:
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event['component'] = self._sdr.sensors[sensorid].name
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except KeyError:
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if sensorid == 0:
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event['component'] = None
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else:
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event['component'] = 'Sensor {0}'.format(sensorid)
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event['deassertion'] = deassertion
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event['event_data_bytes'] = event_data
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byte2type = (event_data[0] & 0b11000000) >> 6
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byte3type = (event_data[0] & 0b110000) >> 4
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if byte2type == 1:
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event['triggered_value'] = event_data[1]
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evtoffset = event_data[0] & 0b1111
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event['event_type_byte'] = event_type
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if event_type <= 0xc:
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event['component_type_id'] = sensor_type
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event['event_id'] = '{0}.{1}'.format(event_type, evtoffset)
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# use generic offset decode for event description
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event['component_type'] = self.event_consts.sensor_type_codes.get(
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sensor_type, '')
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evreading = self.event_consts.generic_type_offsets.get(
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event_type, {}).get(evtoffset, {})
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if event['deassertion']:
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event['event'] = evreading.get('deassertion_desc', '')
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event['severity'] = evreading.get(
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'deassertion_severity', pygconst.Health.Ok)
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else:
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event['event'] = evreading.get('desc', '')
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event['severity'] = evreading.get(
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'severity', pygconst.Health.Ok)
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elif event_type == 0x6f:
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event['component_type_id'] = sensor_type
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event['event_id'] = '{0}.{1}'.format(event_type, evtoffset)
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event['component_type'] = self.event_consts.sensor_type_codes.get(
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sensor_type, '')
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evreading = self.event_consts.sensor_type_offsets.get(
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sensor_type, {}).get(evtoffset, {})
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if event['deassertion']:
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event['event'] = evreading.get('deassertion_desc', '')
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event['severity'] = evreading.get(
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'deassertion_severity', pygconst.Health.Ok)
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else:
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event['event'] = evreading.get('desc', '')
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event['severity'] = evreading.get(
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'severity', pygconst.Health.Ok)
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if event_type == 1: # threshold
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if byte3type == 1:
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event['threshold_value'] = event_data[2]
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if 3 in (byte2type, byte3type) or event_type == 0x6f:
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# sensor specific decode, see sdr module...
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# 2 - 0xc: generic discrete, 0x6f, sensor specific
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additionaldata = decode_eventdata(
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sensor_type, evtoffset, event_data, self.event_consts,
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self._sdr)
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if additionaldata:
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event['event_data'] = additionaldata
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def decode_pet(self, specifictrap, petdata):
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if isinstance(specifictrap, int):
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specifictrap = struct.unpack('4B', struct.pack('>I', specifictrap))
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if len(specifictrap) != 4:
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raise pygexc.InvalidParameterValue(
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'specifictrap should be integer number or 4 byte array')
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specifictrap = bytearray(specifictrap)
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sensor_type = specifictrap[1]
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event_type = specifictrap[2]
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# Event Offset is in first event data byte, so no need to fetch it here
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# evtoffset = specifictrap[3] & 0b1111
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deassertion = (specifictrap[3] & 0b10000000) == 0b10000000
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# alertseverity = petdata[26]
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sensorid = '{0}.0'.format(petdata[28])
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event_data = petdata[31:34]
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event = {}
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seqnum = struct.unpack_from('>H', buffer(petdata[16:18]))[0]
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ltimestamp = struct.unpack_from('>I', buffer(petdata[18:22]))[0]
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|
petack = bytearray(struct.pack('<HIBBBBBB', seqnum, ltimestamp,
|
|
petdata[25], petdata[27], petdata[28],
|
|
*event_data))
|
|
try:
|
|
self._ipmicmd.xraw_command(netfn=4, command=0x17, data=petack)
|
|
except pygexc.IpmiException: # Ignore failure to ack for now
|
|
pass
|
|
self._populate_event(deassertion, event, event_data, event_type,
|
|
sensor_type, sensorid)
|
|
event['timecode'] = ltimestamp
|
|
_fix_sel_time((event,), self._ipmicmd)
|
|
return event
|
|
|
|
def _decode_standard_event(self, eventdata, event):
|
|
# Ignore the generator id for now..
|
|
if eventdata[2] not in (3, 4):
|
|
raise pygexc.PyghmiException(
|
|
'Unrecognized Event message version {0}'.format(eventdata[2]))
|
|
sensor_type = eventdata[3]
|
|
sensorid = '{0}.{1}.{2}'.format(
|
|
eventdata[0], eventdata[4], eventdata[1] & 0b11)
|
|
event_data = eventdata[6:]
|
|
deassertion = (eventdata[5] & 0b10000000 == 0b10000000)
|
|
event_type = eventdata[5] & 0b1111111
|
|
self._populate_event(deassertion, event, event_data, event_type,
|
|
sensor_type, sensorid)
|
|
|
|
def _sel_decode(self, origselentry):
|
|
selentry = bytearray(origselentry)
|
|
event = {}
|
|
event['record_id'] = struct.unpack_from('<H', origselentry[:2])[0]
|
|
if selentry[2] == 2 or (0xc0 <= selentry[2] <= 0xdf):
|
|
# Either standard, or at least the timestamp is standard
|
|
event['timecode'] = struct.unpack_from('<I', buffer(selentry[3:7])
|
|
)[0]
|
|
if selentry[2] == 2: # ipmi defined standard format
|
|
self._decode_standard_event(selentry[7:], event)
|
|
elif 0xc0 <= selentry[2] <= 0xdf:
|
|
event['oemid'] = selentry[7:10]
|
|
event['oemdata'] = selentry[10:]
|
|
elif selentry[2] >= 0xe0:
|
|
# In this class of OEM message, all bytes are OEM, interpretation
|
|
# is wholly left up to the OEM layer, using the OEM ID of the BMC
|
|
event['oemdata'] = selentry[3:]
|
|
self._ipmicmd._oem.process_event(event, self._ipmicmd, selentry)
|
|
if 'event_type_byte' in event:
|
|
del event['event_type_byte']
|
|
if 'event_data_bytes' in event:
|
|
del event['event_data_bytes']
|
|
return event
|
|
|
|
def _fetch_entries(self, ipmicmd, startat, targetlist, rsvid=0):
|
|
curr = startat
|
|
endat = curr
|
|
while curr != 0xffff:
|
|
endat = curr
|
|
reqdata = bytearray(struct.pack('<HHH', rsvid, curr, 0xff00))
|
|
try:
|
|
rsp = ipmicmd.xraw_command(
|
|
netfn=0xa, command=0x43, data=reqdata)
|
|
except pygexc.IpmiException as pi:
|
|
if pi.ipmicode == 203:
|
|
break
|
|
else:
|
|
raise
|
|
curr = struct.unpack_from('<H', buffer(rsp['data'][:2]))[0]
|
|
targetlist.append(self._sel_decode(rsp['data'][2:]))
|
|
return endat
|
|
|
|
def fetch_sel(self, ipmicmd, clear=False):
|
|
"""Fetch SEL entries
|
|
|
|
Return an iterable of SEL entries. If clearing is requested,
|
|
the fetch and clear will be done as an atomic operation, assuring
|
|
no entries are dropped.
|
|
|
|
:param ipmicmd: The Command object to use to interrogate
|
|
:param clear: Whether to clear the entries upon retrieval.
|
|
"""
|
|
records = []
|
|
# First we do a fetch all without reservation, reducing the risk
|
|
# of having a long lived reservation that gets canceled in the middle
|
|
endat = self._fetch_entries(ipmicmd, 0, records)
|
|
if clear and records: # don't bother clearing if there were no records
|
|
# To do clear, we make a reservation first...
|
|
rsp = ipmicmd.xraw_command(netfn=0xa, command=0x42)
|
|
rsvid = struct.unpack_from('<H', rsp['data'])[0]
|
|
# Then we refetch the tail with reservation (check for change)
|
|
del records[-1] # remove the record that's about to be duplicated
|
|
self._fetch_entries(ipmicmd, endat, records, rsvid)
|
|
# finally clear the SEL
|
|
# 0XAA means start initiate, 0x524c43 is 'RCL' or 'CLR' backwards
|
|
clrdata = bytearray(struct.pack('<HI', rsvid, 0xAA524C43))
|
|
ipmicmd.xraw_command(netfn=0xa, command=0x47, data=clrdata)
|
|
# Now to fixup the record timestamps... first we need to get the BMC
|
|
# opinion of current time
|
|
_fix_sel_time(records, ipmicmd)
|
|
return records
|