Re: wlwifi - Microcode SW error detected.

From: Steven Noonan
Date: Tue Aug 12 2014 - 15:05:24 EST

I'm seeing this on linus/master right now...

$ uname -r
3.16.0-ec2-10567-gc7a19c7

$ dmesg
[...]
[ 32.450641] ieee80211 phy0: Hardware restart was requested
[ 32.451124] iwlwifi 0000:04:00.0: L1 Enabled; Disabling L0S
[ 32.451457] iwlwifi 0000:04:00.0: L1 Enabled; Disabling L0S
[ 32.726567] iwlwifi 0000:04:00.0: Microcode SW error detected. Restarting 0x2000000.
[ 32.726572] iwlwifi 0000:04:00.0: CSR values:
[ 32.726574] iwlwifi 0000:04:00.0: (2nd byte of CSR_INT_COALESCING is CSR_INT_PERIODIC_REG)
[ 32.726586] iwlwifi 0000:04:00.0: CSR_HW_IF_CONFIG_REG: 0X40489204
[ 32.726597] iwlwifi 0000:04:00.0: CSR_INT_COALESCING: 0X80000040
[ 32.726608] iwlwifi 0000:04:00.0: CSR_INT: 0X00000000
[ 32.726618] iwlwifi 0000:04:00.0: CSR_INT_MASK: 0X00000000
[ 32.726629] iwlwifi 0000:04:00.0: CSR_FH_INT_STATUS: 0X00000000
[ 32.726639] iwlwifi 0000:04:00.0: CSR_GPIO_IN: 0X00000000
[ 32.726650] iwlwifi 0000:04:00.0: CSR_RESET: 0X00000000
[ 32.726661] iwlwifi 0000:04:00.0: CSR_GP_CNTRL: 0X080403c5
[ 32.726671] iwlwifi 0000:04:00.0: CSR_HW_REV: 0X00000144
[ 32.726682] iwlwifi 0000:04:00.0: CSR_EEPROM_REG: 0X00000000
[ 32.726692] iwlwifi 0000:04:00.0: CSR_EEPROM_GP: 0X80000000
[ 32.726703] iwlwifi 0000:04:00.0: CSR_OTP_GP_REG: 0X803a0000
[ 32.726713] iwlwifi 0000:04:00.0: CSR_GIO_REG: 0X00080042
[ 32.726724] iwlwifi 0000:04:00.0: CSR_GP_UCODE_REG: 0X00000000
[ 32.726734] iwlwifi 0000:04:00.0: CSR_GP_DRIVER_REG: 0X00000000
[ 32.726745] iwlwifi 0000:04:00.0: CSR_UCODE_DRV_GP1: 0X00000000
[ 32.726755] iwlwifi 0000:04:00.0: CSR_UCODE_DRV_GP2: 0X00000000
[ 32.726766] iwlwifi 0000:04:00.0: CSR_LED_REG: 0X00000060
[ 32.726777] iwlwifi 0000:04:00.0: CSR_DRAM_INT_TBL_REG: 0X880d2aef
[ 32.726787] iwlwifi 0000:04:00.0: CSR_GIO_CHICKEN_BITS: 0X27800200
[ 32.726798] iwlwifi 0000:04:00.0: CSR_ANA_PLL_CFG: 0Xd55555d5
[ 32.726808] iwlwifi 0000:04:00.0: CSR_MONITOR_STATUS_REG: 0X3c08019d
[ 32.726819] iwlwifi 0000:04:00.0: CSR_HW_REV_WA_REG: 0X0001001a
[ 32.726830] iwlwifi 0000:04:00.0: CSR_DBG_HPET_MEM_REG: 0Xffff0000
[ 32.726831] iwlwifi 0000:04:00.0: FH register values:
[ 32.726851] iwlwifi 0000:04:00.0: FH_RSCSR_CHNL0_STTS_WPTR_REG: 0X2135fa00
[ 32.726863] iwlwifi 0000:04:00.0: FH_RSCSR_CHNL0_RBDCB_BASE_REG: 0X02135fb0
[ 32.726875] iwlwifi 0000:04:00.0: FH_RSCSR_CHNL0_WPTR: 0X00000020
[ 32.726886] iwlwifi 0000:04:00.0: FH_MEM_RCSR_CHNL0_CONFIG_REG: 0X80801114
[ 32.726898] iwlwifi 0000:04:00.0: FH_MEM_RSSR_SHARED_CTRL_REG: 0X000000fc
[ 32.726909] iwlwifi 0000:04:00.0: FH_MEM_RSSR_RX_STATUS_REG: 0X07030000
[ 32.726921] iwlwifi 0000:04:00.0: FH_MEM_RSSR_RX_ENABLE_ERR_IRQ2DRV: 0X00000000
[ 32.726933] iwlwifi 0000:04:00.0: FH_TSSR_TX_STATUS_REG: 0X07ff0001
[ 32.726945] iwlwifi 0000:04:00.0: FH_TSSR_TX_ERROR_REG: 0X00000000
[ 32.727049] iwlwifi 0000:04:00.0: Start IWL Error Log Dump:
[ 32.727051] iwlwifi 0000:04:00.0: Status: 0x00000000, count: 6
[ 32.727053] iwlwifi 0000:04:00.0: Loaded firmware version: 23.214.9.0
[ 32.727055] iwlwifi 0000:04:00.0: 0x0000277B | ADVANCED_SYSASSERT
[ 32.727056] iwlwifi 0000:04:00.0: 0x00A002B0 | uPc
[ 32.727058] iwlwifi 0000:04:00.0: 0x00000000 | branchlink1
[ 32.727059] iwlwifi 0000:04:00.0: 0x00000BA4 | branchlink2
[ 32.727061] iwlwifi 0000:04:00.0: 0x000166A4 | interruptlink1
[ 32.727062] iwlwifi 0000:04:00.0: 0x00173B03 | interruptlink2
[ 32.727064] iwlwifi 0000:04:00.0: 0x00000024 | data1
[ 32.727065] iwlwifi 0000:04:00.0: 0x00000018 | data2
[ 32.727066] iwlwifi 0000:04:00.0: 0xDEADBEEF | data3
[ 32.727068] iwlwifi 0000:04:00.0: 0x003BE59F | beacon time
[ 32.727069] iwlwifi 0000:04:00.0: 0x00041A80 | tsf low
[ 32.727070] iwlwifi 0000:04:00.0: 0x00000000 | tsf hi
[ 32.727072] iwlwifi 0000:04:00.0: 0x00000000 | time gp1
[ 32.727073] iwlwifi 0000:04:00.0: 0x00041A80 | time gp2
[ 32.727075] iwlwifi 0000:04:00.0: 0x00000000 | time gp3
[ 32.727076] iwlwifi 0000:04:00.0: 0x000417D6 | uCode version
[ 32.727077] iwlwifi 0000:04:00.0: 0x00000144 | hw version
[ 32.727079] iwlwifi 0000:04:00.0: 0x40489204 | board version
[ 32.727080] iwlwifi 0000:04:00.0: 0x0000001C | hcmd
[ 32.727081] iwlwifi 0000:04:00.0: 0x00022000 | isr0
[ 32.727083] iwlwifi 0000:04:00.0: 0x01000000 | isr1
[ 32.727084] iwlwifi 0000:04:00.0: 0x00000002 | isr2
[ 32.727085] iwlwifi 0000:04:00.0: 0x004040C0 | isr3
[ 32.727087] iwlwifi 0000:04:00.0: 0x00000000 | isr4
[ 32.727088] iwlwifi 0000:04:00.0: 0x00000110 | isr_pref
[ 32.727090] iwlwifi 0000:04:00.0: 0x00000000 | wait_event
[ 32.727091] iwlwifi 0000:04:00.0: 0x00000080 | l2p_control
[ 32.727092] iwlwifi 0000:04:00.0: 0x00010000 | l2p_duration
[ 32.727094] iwlwifi 0000:04:00.0: 0x0000003F | l2p_mhvalid
[ 32.727095] iwlwifi 0000:04:00.0: 0x00000080 | l2p_addr_match
[ 32.727097] iwlwifi 0000:04:00.0: 0x00000005 | lmpm_pmg_sel
[ 32.727098] iwlwifi 0000:04:00.0: 0x18051651 | timestamp
[ 32.727099] iwlwifi 0000:04:00.0: 0x00002030 | flow_handler
[ 32.727102] ieee80211 phy0: Hardware restart was requested
[ 32.727583] iwlwifi 0000:04:00.0: L1 Enabled; Disabling L0S
[ 32.727910] iwlwifi 0000:04:00.0: L1 Enabled; Disabling L0S
[...]

On Mon, Feb 10, 2014 at 4:54 AM, Michal Hocko <mhocko@xxxxxxx> wrote:
> On Sun 09-02-14 06:46:20, Grumbach, Emmanuel wrote:
> [...]
>> Is this a regression?
>
> No idea. I haven't tried to reproduce it.
>
>> To me, it looks like a pure firmware issue.
>
> The message points at FW but I have no idea what it actually tries to
> tell, except that something went really wrong.
> --
> Michal Hocko
> SUSE Labs
> --
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