linux-kernel - iwlwifi: microcode SW error detected

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Date:   Sat, 17 Aug 2019 08:19:34 +0100
From:   Chris Clayton <chris2553@...glemail.com>
To:     LKML <linux-kernel@...r.kernel.org>
Subject: iwlwifi: microcode SW error detected

Hi.

I just found the following error in the output from dmesg.

[ 4023.460058] iwlwifi 0000:02:00.0: Microcode SW error detected. Restarting 0x0.
[ 4023.460178] iwlwifi 0000:02:00.0: Start IWL Error Log Dump:
[ 4023.460179] iwlwifi 0000:02:00.0: Status: 0x00000080, count: 6
[ 4023.460180] iwlwifi 0000:02:00.0: Loaded firmware version: 46.93e59cf4.0
[ 4023.460181] iwlwifi 0000:02:00.0: 0x000022CE | ADVANCED_SYSASSERT
[ 4023.460182] iwlwifi 0000:02:00.0: 0x0590A2F0 | trm_hw_status0
[ 4023.460182] iwlwifi 0000:02:00.0: 0x00000000 | trm_hw_status1
[ 4023.460183] iwlwifi 0000:02:00.0: 0x00488472 | branchlink2
[ 4023.460183] iwlwifi 0000:02:00.0: 0x00479392 | interruptlink1
[ 4023.460184] iwlwifi 0000:02:00.0: 0x00000000 | interruptlink2
[ 4023.460184] iwlwifi 0000:02:00.0: 0x0000012C | data1
[ 4023.460185] iwlwifi 0000:02:00.0: 0x00000000 | data2
[ 4023.460186] iwlwifi 0000:02:00.0: 0x04000000 | data3
[ 4023.460186] iwlwifi 0000:02:00.0: 0x42001A44 | beacon time
[ 4023.460187] iwlwifi 0000:02:00.0: 0x4E9F05CD | tsf low
[ 4023.460187] iwlwifi 0000:02:00.0: 0x000000D8 | tsf hi
[ 4023.460188] iwlwifi 0000:02:00.0: 0x00000000 | time gp1
[ 4023.460188] iwlwifi 0000:02:00.0: 0xEF55F6D0 | time gp2
[ 4023.460189] iwlwifi 0000:02:00.0: 0x00000001 | uCode revision type
[ 4023.460190] iwlwifi 0000:02:00.0: 0x0000002E | uCode version major
[ 4023.460190] iwlwifi 0000:02:00.0: 0x93E59CF4 | uCode version minor
[ 4023.460191] iwlwifi 0000:02:00.0: 0x00000321 | hw version
[ 4023.460191] iwlwifi 0000:02:00.0: 0x00C89004 | board version
[ 4023.460192] iwlwifi 0000:02:00.0: 0x0A05001C | hcmd
[ 4023.460192] iwlwifi 0000:02:00.0: 0xA2F93802 | isr0
[ 4023.460193] iwlwifi 0000:02:00.0: 0x00040000 | isr1
[ 4023.460193] iwlwifi 0000:02:00.0: 0x00001802 | isr2
[ 4023.460194] iwlwifi 0000:02:00.0: 0x40417DCD | isr3
[ 4023.460195] iwlwifi 0000:02:00.0: 0x00000000 | isr4
[ 4023.460195] iwlwifi 0000:02:00.0: 0x0A04001C | last cmd Id
[ 4023.460196] iwlwifi 0000:02:00.0: 0x00018802 | wait_event
[ 4023.460196] iwlwifi 0000:02:00.0: 0x00004A88 | l2p_control
[ 4023.460197] iwlwifi 0000:02:00.0: 0x00000020 | l2p_duration
[ 4023.460197] iwlwifi 0000:02:00.0: 0x000003BF | l2p_mhvalid
[ 4023.460198] iwlwifi 0000:02:00.0: 0x000000EF | l2p_addr_match
[ 4023.460198] iwlwifi 0000:02:00.0: 0x0000000D | lmpm_pmg_sel
[ 4023.460199] iwlwifi 0000:02:00.0: 0x19071250 | timestamp
[ 4023.460199] iwlwifi 0000:02:00.0: 0x14C0E8E8 | flow_handler
[ 4023.460257] iwlwifi 0000:02:00.0: 0x00000000 | ADVANCED_SYSASSERT
[ 4023.460257] iwlwifi 0000:02:00.0: 0x00000000 | umac branchlink1
[ 4023.460258] iwlwifi 0000:02:00.0: 0x00000000 | umac branchlink2
[ 4023.460258] iwlwifi 0000:02:00.0: 0x00000000 | umac interruptlink1
[ 4023.460259] iwlwifi 0000:02:00.0: 0x00000000 | umac interruptlink2
[ 4023.460260] iwlwifi 0000:02:00.0: 0x00000000 | umac data1
[ 4023.460260] iwlwifi 0000:02:00.0: 0x00000000 | umac data2
[ 4023.460261] iwlwifi 0000:02:00.0: 0x00000000 | umac data3
[ 4023.460261] iwlwifi 0000:02:00.0: 0x00000000 | umac major
[ 4023.460262] iwlwifi 0000:02:00.0: 0x00000000 | umac minor
[ 4023.460262] iwlwifi 0000:02:00.0: 0x00000000 | frame pointer
[ 4023.460263] iwlwifi 0000:02:00.0: 0x00000000 | stack pointer
[ 4023.460263] iwlwifi 0000:02:00.0: 0x00000000 | last host cmd
[ 4023.460264] iwlwifi 0000:02:00.0: 0x00000000 | isr status reg
[ 4023.460278] iwlwifi 0000:02:00.0: Fseq Registers:
[ 4023.460282] iwlwifi 0000:02:00.0: 0x0568FC22 | FSEQ_ERROR_CODE
[ 4023.460289] iwlwifi 0000:02:00.0: 0x00000000 | FSEQ_TOP_INIT_VERSION
[ 4023.460297] iwlwifi 0000:02:00.0: 0xDFFC324F | FSEQ_CNVIO_INIT_VERSION
[ 4023.460304] iwlwifi 0000:02:00.0: 0x0000A371 | FSEQ_OTP_VERSION
[ 4023.460312] iwlwifi 0000:02:00.0: 0xC338B29A | FSEQ_TOP_CONTENT_VERSION
[ 4023.460319] iwlwifi 0000:02:00.0: 0xD9E91E16 | FSEQ_ALIVE_TOKEN
[ 4023.460327] iwlwifi 0000:02:00.0: 0xAC99E6BF | FSEQ_CNVI_ID
[ 4023.460334] iwlwifi 0000:02:00.0: 0x07665623 | FSEQ_CNVR_ID
[ 4023.460342] iwlwifi 0000:02:00.0: 0x01000200 | CNVI_AUX_MISC_CHIP
[ 4023.460349] iwlwifi 0000:02:00.0: 0x01300202 | CNVR_AUX_MISC_CHIP
[ 4023.460357] iwlwifi 0000:02:00.0: 0x0000485B | CNVR_SCU_SD_REGS_SD_REG_DIG_DCDC_VTRIM
[ 4023.460413] iwlwifi 0000:02:00.0: 0x0BADCAFE | CNVR_SCU_SD_REGS_SD_REG_ACTIVE_VDIG_MIRROR
[ 4023.460421] iwlwifi 0000:02:00.0: Collecting data: trigger 2 fired.
[ 4023.460424] ieee80211 phy0: Hardware restart was requested
[ 4024.639366] iwlwifi 0000:02:00.0: Applying debug destination EXTERNAL_DRAM
[ 4024.753171] iwlwifi 0000:02:00.0: Applying debug destination EXTERNAL_DRAM
[ 4024.817999] iwlwifi 0000:02:00.0: FW already configured (0) - re-configuring
[ 4024.829374] iwlwifi 0000:02:00.0: BIOS contains WGDS but no WRDS

The output messages from the driver when the system starts are:

[    3.667365] iwlwifi 0000:02:00.0: enabling device (0000 -> 0002)
[    3.670357] iwlwifi 0000:02:00.0: Found debug destination: EXTERNAL_DRAM
[    3.670360] iwlwifi 0000:02:00.0: Found debug configuration: 0
[    3.670525] iwlwifi 0000:02:00.0: loaded firmware version 46.93e59cf4.0 op_mode iwlmvm
[    3.723845] iwlwifi 0000:02:00.0: Detected Intel(R) Wireless-AC 9260 160MHz, REV=0x324
[    3.735117] iwlwifi 0000:02:00.0: Applying debug destination EXTERNAL_DRAM
[    3.735250] iwlwifi 0000:02:00.0: Allocated 0x00400000 bytes for firmware monitor.
[    3.780700] iwlwifi 0000:02:00.0: base HW address: a4:c3:f0:6d:9f:7a
[    7.919068] iwlwifi 0000:02:00.0: Applying debug destination EXTERNAL_DRAM
[    8.037667] iwlwifi 0000:02:00.0: Applying debug destination EXTERNAL_DRAM
[    8.104305] iwlwifi 0000:02:00.0: FW already configured (0) - re-configuring
[    8.119477] iwlwifi 0000:02:00.0: BIOS contains WGDS but no WRDS


Happy to provide more diagnostics if necessary and to test any fixes, but please cc me as I'm not subscribed.

Chris