Return-path: Received: from mail-by2nam03on0087.outbound.protection.outlook.com ([104.47.42.87]:51168 "EHLO NAM03-BY2-obe.outbound.protection.outlook.com" rhost-flags-OK-OK-OK-FAIL) by vger.kernel.org with ESMTP id S1752965AbcLIFco (ORCPT ); Fri, 9 Dec 2016 00:32:44 -0500 From: Bharat Kumar Gogada To: Kalle Valo CC: Bjorn Helgaas , "linux-kernel@vger.kernel.org" , "linux-pci@vger.kernel.org" , Marc Zyngier , "Janusz.Dziedzic@tieto.com" , "ath9k-devel@qca.qualcomm.com" , "linux-wireless@vger.kernel.org" , "rmanohar@qca.qualcomm.com" Subject: RE: ATH9 driver issues on ARM64 Date: Fri, 9 Dec 2016 05:00:23 +0000 Message-ID: <8520D5D51A55D047800579B094147198263A7A64@XAP-PVEXMBX02.xlnx.xilinx.com> (sfid-20161209_063249_038372_D26D1B7C) References: <8520D5D51A55D047800579B094147198263A7222@XAP-PVEXMBX02.xlnx.xilinx.com> <20161208145608.GA19822@bhelgaas-glaptop.roam.corp.google.com> <8520D5D51A55D047800579B094147198263A72F5@XAP-PVEXMBX02.xlnx.xilinx.com> <874m2emif9.fsf@purkki.adurom.net> In-Reply-To: <874m2emif9.fsf@purkki.adurom.net> Content-Type: text/plain; charset="us-ascii" MIME-Version: 1.0 Sender: linux-wireless-owner@vger.kernel.org List-ID: Hi, Can any one tell, when exactly the chip sends ASSERT & DEASSERT in driver. It might help us to debug issue further. Thanks & Regards, Bharat=20 > > > [+cc Kalle, ath9k list] >=20 > Thanks, but please also CC linux-wireless. Full thread below for the folk= s there. >=20 > >> On Thu, Dec 08, 2016 at 01:49:42PM +0000, Bharat Kumar Gogada wrote: > >> > Hi, > >> > > >> > Did anyone test Atheros ATH9 > >> > driver(drivers/net/wireless/ath/ath9k/) > >> > on ARM64. The end point is TP link wifi card with which supports > >> > only legacy interrupts. > >> > >> If it works on other arches and the arm64 PCI enumeration works, my > >> first guess would be an INTx issue, e.g., maybe the driver is waiting > >> for an interrupt that never arrives. > > We are not sure for now. > >> > >> > We are trying to test it on ARM64 with > >> > (drivers/pci/host/pcie-xilinx-nwl.c) as root port. > >> > > >> > EP is getting enumerated and able to link up. > >> > > >> > But when we start scan system gets hanged. > >> > >> When you say the system hangs when you start a scan, I assume you > >> mean a wifi scan, not the PCI enumeration. A problem with a wifi > >> scan might cause a *process* to hang, but it shouldn't hang the > >> entire system. > >> > > Yes wifi scan. > >> > When we took trace we see that after we start scan assert message > >> > is sent but there is no de assert from end point. > >> > >> Are you talking about a trace from a PCIe analyzer? Do you see an > >> Assert_INTx PCIe message on the link? > >> > > Yes lecroy trace, yes we do see Assert_INTx and Deassert_INTx happening > when we do interface link up. > > When we have less debug prints in Atheros driver, and do wifi scan we > > see Assert_INTx but never Deassert_INTx, > >> > What might cause end point not sending de assert ? > >> > >> If the endpoint doesn't send a Deassert_INTx message, I expect that > >> would mean the driver didn't service the interrupt and remove the > >> condition that caused the device to assert the interrupt in the first > >> place. > >> > >> If the driver didn't receive the interrupt, it couldn't service it, > >> of course. You could add a printk in the ath9k interrupt service > >> routine to see if you ever get there. > >> > > The interrupt behavior is changing w.r.t amount of debug prints we > > add. (I kept many prints to aid debug) root@Xilinx-ZCU102-2016_3:~# iw = dev > wlan0 scan > > [ 83.064675] ath9k: ath9k_iowrite32 ffffff800a400024 > > [ 83.069486] ath9k: ath9k_ioread32 ffffff800a400024 > > [ 83.074257] ath9k_hw_kill_interrupts 793 > > [ 83.078260] ath9k: ath9k_iowrite32 ffffff800a400024 > > [ 83.083107] ath9k: ath9k_ioread32 ffffff800a400024 > > [ 83.087882] ath9k_hw_kill_interrupts 793 > > [ 83.095450] ath9k_hw_enable_interrupts 821 > > [ 83.099557] ath9k_hw_enable_interrupts 825 > > [ 83.103721] ath9k_hw_enable_interrupts 832 > > [ 83.107887] ath9k: ath9k_iowrite32 ffffff800a400024 > > [ 83.112748] AR_SREV_9100 0 > > [ 83.115438] ath9k_hw_enable_interrupts 848 > > [ 83.119607] ath9k: ath9k_ioread32 ffffff800a400024 > > [ 83.124389] ath9k_hw_intrpend 762 > > [ 83.127761] (AR_SREV_9340(ah) val 0 > > [ 83.131234] ath9k_hw_intrpend 767 > > [ 83.134628] ath_isr 603 > > [ 83.137134] ath9k: ath9k_iowrite32 ffffff800a400024 > > [ 83.141995] ath9k: ath9k_ioread32 ffffff800a400024 > > [ 83.146771] ath9k_hw_kill_interrupts 793 > > [ 83.150864] ath9k_hw_enable_interrupts 821 > > [ 83.154971] ath9k_hw_enable_interrupts 825 > > [ 83.159135] ath9k_hw_enable_interrupts 832 > > [ 83.163300] ath9k: ath9k_iowrite32 ffffff800a400024 > > [ 83.168161] AR_SREV_9100 0 > > [ 83.170852] ath9k_hw_enable_interrupts 848 > > [ 83.170855] ath9k_hw_intrpend 762 > > [ 83.178398] (AR_SREV_9340(ah) val 0 > > [ 83.181873] ath9k_hw_intrpend 767 > > [ 83.185265] ath_isr 603 > > [ 83.187773] ath9k: ath9k_iowrite32 ffffff800a400024 > > [ 83.192635] ath9k: ath9k_ioread32 ffffff800a400024 > > [ 83.197411] ath9k_hw_kill_interrupts 793 > > [ 83.201414] ath9k: ath9k_ioread32 ffffff800a400024 > > [ 83.206258] ath9k_hw_enable_interrupts 821 > > [ 83.210368] ath9k_hw_enable_interrupts 825 > > [ 83.214531] ath9k_hw_enable_interrupts 832 > > [ 83.218698] ath9k: ath9k_iowrite32 ffffff800a400024 > > [ 83.223558] AR_SREV_9100 0 > > [ 83.226243] ath9k_hw_enable_interrupts 848 > > [ 83.226246] ath9k_hw_intrpend 762 > > [ 83.233794] (AR_SREV_9340(ah) val 0 > > [ 83.237268] ath9k_hw_intrpend 767 > > [ 83.240661] ath_isr 603 > > [ 83.243169] ath9k: ath9k_iowrite32 ffffff800a400024 > > [ 83.248030] ath9k: ath9k_ioread32 ffffff800a400024 > > [ 83.252806] ath9k_hw_kill_interrupts 793 > > [ 83.256811] ath9k: ath9k_ioread32 ffffff800a400024 > > [ 83.261651] ath9k_hw_enable_interrupts 821 > > [ 83.265753] ath9k_hw_enable_interrupts 825 > > [ 83.269919] ath9k_hw_enable_interrupts 832 > > [ 83.274083] ath9k: ath9k_iowrite32 ffffff800a400024 > > [ 83.278945] AR_SREV_9100 0 > > [ 83.281630] ath9k_hw_enable_interrupts 848 > > [ 83.281633] ath9k_hw_intrpend 762 > > [ 83.281634] (AR_SREV_9340(ah) val 0 > > [ 83.281637] ath9k_hw_intrpend 767 > > [ 83.281648] ath_isr 603 > > [ 83.281649] ath9k: ath9k_iowrite32 ffffff800a400024 > > [ 83.281651] ath9k: ath9k_ioread32 ffffff800a400024 > > [ 83.281654] ath9k_hw_kill_interrupts 793 > > [ 83.312192] ath9k: ath9k_ioread32 ffffff800a400024 > > [ 83.317030] ath9k_hw_enable_interrupts 821 > > [ 83.321132] ath9k_hw_enable_interrupts 825 > > [ 83.325297] ath9k_hw_enable_interrupts 832 > > [ 83.329463] ath9k: ath9k_iowrite32 ffffff800a400024 > > [ 83.334324] AR_SREV_9100 0 > > [ 83.337014] ath9k_hw_enable_interrupts 848 > > .. > > .. > > This log continues until I turn off board without obtaining scanning re= sult. > > > > In between I get following cpu stall outputs : > > 230.457179] INFO: rcu_sched self-detected stall on CPU > > [ 230.457185] 2-...: (31314 ticks this GP) > idle=3D2d1/140000000000001/0 softirq=3D1400/1400 fqs=3D36713 > > [ 230.457189] (t=3D36756 jiffies g=3D161 c=3D160 q=3D16169) > > [ 230.457191] Task dump for CPU 2: > > [ 230.457196] kworker/u8:4 R running task 0 1342 2 0x= 00000002 > > [ 230.457207] Workqueue: phy0 ieee80211_scan_work [ 230.457208] Call > > trace: > > [ 230.457214] [] dump_backtrace+0x0/0x198 [ > > 230.457219] [] show_stack+0x14/0x20 [ 230.457224] > > [] sched_show_task+0x98/0xf8 [ 230.457228] > > [] dump_cpu_task+0x40/0x50 [ 230.457233] > > [] rcu_dump_cpu_stacks+0xa0/0xf0 [ 230.457239] > > [] rcu_check_callbacks+0x468/0x748 [ 230.457243] > > [] update_process_times+0x3c/0x68 [ 230.457249] > > [] tick_sched_handle.isra.5+0x3c/0x50 > > [ 230.457253] [] tick_sched_timer+0x44/0x90 [ > > 230.457257] [] __hrtimer_run_queues+0xf0/0x178 > > ** 10 printk messages dropped ** [ 230.457302] f8c0: 0000000000000000 > > 0000000005f5e0ff 000000000001379a 3866666666666620 [ 230.457306] > > f8e0: ffffff800a1b4065 0000000000000006 ffffff800a129000 > > ffffffc87b8010a8 [ 230.457310] f900: ffffff808a1b4057 > > ffffff800a1c3000 ffffff800a1b3000 ffffff800a13b000 [ 230.457314] > > f920: 0000000000000140 0000000000000006 ffffff800a1b3b10 > > ffffff800a1c39e8 [ 230.457318] f940: 000000000000002f > > ffffff800a1b8a98 ffffff800a1b3ae8 ffffffc87b07f990 [ 230.457322] > > f960: ffffff80080d6230 ffffffc87b07f990 ffffff80080d6234 > > 0000000060000145 > > ** 1 printk messages dropped ** [ 230.457329] [] > > el1_irq+0xa0/0x100 > > ** 9 printk messages dropped ** [ 230.457373] [] > > ieee80211_hw_config+0x50/0x290 [ 230.457377] [] > > ieee80211_scan_work+0x1f8/0x480 [ 230.457383] [] > > process_one_work+0x120/0x378 [ 230.457386] [] > > worker_thread+0x48/0x4b0 [ 230.457391] [] > > kthread+0xd0/0xe8 [ 230.457395] [] > ret_from_fork+0x10/0x40 > > [ 230.480389] ath9k_hw_intrpend 762 > > > > > > [ 545.487987] ath9k: ath9k_ioread32 ffffff800a400024 [ 545.526189] > > INFO: rcu_sched self-detected stall on CPU > > [ 545.526195] 2-...: (97636 ticks this GP) > idle=3D2d1/140000000000001/0 softirq=3D1400/1400 fqs=3D115374 > > [ 545.526199] (t=3D115523 jiffies g=3D161 c=3D160 q=3D51066) > > [ 545.526201] Task dump for CPU 2: > > [ 545.526206] kworker/u8:4 R running task 0 1342 2 0x= 00000002 > > ** 3 printk messages dropped ** [ 545.526231] [] > > show_stack+0x14/0x20 > > ** 9 printk messages dropped ** [ 545.526280] [] > > arch_timer_handler_phys+0x30/0x40 [ 545.526284] [] > > handle_percpu_devid_irq+0x78/0xa0 [ 545.526291] [] > > generic_handle_irq+0x24/0x38 [ 545.526296] [] > > __handle_domain_irq+0x5c/0xb8 [ 545.526299] [] > > gic_handle_irq+0x64/0xc0 [ 545.526302] Exception stack(0xffffffc87b07f= 870 > to 0xffffffc87b07f990) > > [ 545.526306] f860: 0000000000009732= ffffff800a1eaaa8 > > ** 8 printk messages dropped ** [ 545.526341] f980: ffffff800a1c39e8 > > 0000000000000036 [ 545.526345] [] > > el1_irq+0xa0/0x100 [ 545.526349] [] > > console_unlock+0x384/0x5b0 [ 545.526353] [] > > vprintk_emit+0x2dc/0x4b0 [ 545.526357] [] > > vprintk_default+0x38/0x40 [ 545.526362] [] > > printk+0x58/0x60 [ 545.526366] [] > > ath9k_iowrite32+0x9c/0xa8 [ 545.526372] [] > > ath9k_hw_kill_interrupts+0x28/0xf0 > > [ 545.526376] [] ath_reset+0x24/0x68 > > ** 2 printk messages dropped ** [ 545.526391] [] > ieee80211_hw_config+0x50/0x290 > > ** 11 printk messages dropped ** [ 545.532834] ath9k_hw_kill_interrupt= s > 793 > > [ 545.532890] ath9k_hw_enable_interrupts 821 > > > > > > But if we have less debug prints it does not reach EP handler > > sometimes, due to following Condition in "kernel/irq/chip.c" in > > function handle_simple_irq > > > > if (unlikely(!desc->action || irqd_irq_disabled(&desc->irq_data))) { > > desc->istate |=3D IRQS_PENDING; > > goto out_unlock; > > } > > Here irqd_irq_disabled is being set to 1. > > > > With lesser debug prints it stops after following prints: > > root@Xilinx-ZCU102-2016_3:~# iw dev wlan0 scan > > [ 54.781045] ath9k_hw_kill_interrupts 793 > > [ 54.785007] ath9k_hw_kill_interrupts 793 > > [ 54.792535] ath9k_hw_enable_interrupts 821 > > [ 54.796642] ath9k_hw_enable_interrupts 825 > > [ 54.800807] ath9k_hw_enable_interrupts 832 > > [ 54.804973] AR_SREV_9100 0 > > [ 54.807663] ath9k_hw_enable_interrupts 848 > > [ 54.811843] ath9k_hw_intrpend 762 > > [ 54.815211] (AR_SREV_9340(ah) val 0 > > [ 54.818684] ath9k_hw_intrpend 767 > > [ 54.822078] ath_isr 603 > > [ 54.824587] ath9k_hw_kill_interrupts 793 > > [ 54.828601] ath9k_hw_enable_interrupts 821 > > [ 54.832750] ath9k_hw_enable_interrupts 825 > > [ 54.836916] ath9k_hw_enable_interrupts 832 > > [ 54.841082] AR_SREV_9100 0 > > [ 54.843772] ath9k_hw_enable_interrupts 848 > > [ 54.843775] ath9k_hw_intrpend 762 > > [ 54.851319] (AR_SREV_9340(ah) val 0 > > [ 54.854793] ath9k_hw_intrpend 767 > > [ 54.858185] ath_isr 603 > > [ 54.860696] ath9k_hw_kill_interrupts 793 > > [ 54.864776] ath9k_hw_enable_interrupts 821 > > [ 54.867061] ath9k_hw_kill_interrupts 793 > > [ 54.872870] ath9k_hw_enable_interrupts 825 > > [ 54.877036] ath9k_hw_enable_interrupts 832 > > [ 54.881202] AR_SREV_9100 0 > > [ 54.883892] ath9k_hw_enable_interrupts 848 > > [ 75.963129] INFO: rcu_sched detected stalls on CPUs/tasks: > > [ 75.968602] 0-...: (2 GPs behind) idle=3D9d5/140000000000001/0 > softirq=3D1103/1109 fqs=3D519 > > [ 75.976675] (detected by 2, t=3D5274 jiffies, g=3D64, c=3D63, q=3D1= 1) > > [ 75.982485] Task dump for CPU 0: > > [ 75.985696] ksoftirqd/0 R running task 0 3 2 0x= 00000002 > > [ 75.992726] Call trace: > > [ 75.995165] [] __switch_to+0xc4/0xd0 > > [ 76.000281] [] 0xffffffc87b830500 > > [ 139.059027] INFO: rcu_sched detected stalls on CPUs/tasks: > > [ 139.064430] 0-...: (2 GPs behind) idle=3D9d5/140000000000001/0 > softirq=3D1103/1109 fqs=3D2097 > > [ 139.072593] (detected by 2, t=3D21049 jiffies, g=3D64, c=3D63, q=3D= 11) > > [ 139.078489] Task dump for CPU 0: > > [ 139.081700] ksoftirqd/0 R running task 0 3 2 0x= 00000002 > > [ 139.088731] Call trace: > > [ 139.091165] [] __switch_to+0xc4/0xd0 [ > > 139.096285] [] 0xffffffc87b830500 > > > > > >> > We are not seeing any issues on 32-bit ARM platform and X86 > >> > platform. > >> > >> Can you collect a dmesg log (or, if the system hang means you can't > >> collect that, a console log with "ignore_loglevel"), and "lspci -vv" > >> output as root? That should have clues about whether the INTx got > >> routed correctly. /proc/interrupts should also show whether we're > >> receiving interrupts from the device. > > > > Here is the lspci output: > > 00:00.0 PCI bridge: Xilinx Corporation Device d022 (prog-if 00 [Normal > decode]) > > Control: I/O- Mem+ BusMaster+ SpecCycle- MemWINV- VGASnoop- > ParErr- Stepping- SERR- FastB2B- DisINTx- > > Status: Cap+ 66MHz- UDF- FastB2B- ParErr- DEVSEL=3Dfast >TAbort- > SERR- > Latency: 0 > > Interrupt: pin A routed to IRQ 224 > > Bus: primary=3D00, secondary=3D01, subordinate=3D0c, sec-latency=3D0 > > I/O behind bridge: 00000000-00000fff > > Memory behind bridge: e0000000-e00fffff > > Prefetchable memory behind bridge: 00000000fff00000- > 00000000000fffff > > Secondary status: 66MHz- FastB2B- ParErr- DEVSEL=3Dfast >TAbort- > > BridgeCtl: Parity- SERR- NoISA- VGA- MAbort- >Reset- FastB2B- > > PriDiscTmr- SecDiscTmr- DiscTmrStat- DiscTmrSERREn- > > Capabilities: [40] Power Management version 3 > > Flags: PMEClk- DSI- D1- D2- AuxCurrent=3D0mA > PME(D0+,D1+,D2+,D3hot+,D3cold-) > > Status: D0 NoSoftRst+ PME-Enable- DSel=3D0 DScale=3D0 PME- > > Capabilities: [60] Express (v2) Root Port (Slot-), MSI 00 > > DevCap: MaxPayload 256 bytes, PhantFunc 0 > > ExtTag- RBE+ > > DevCtl: Report errors: Correctable- Non-Fatal- Fatal- > Unsupported- > > RlxdOrd+ ExtTag- PhantFunc- AuxPwr- NoSnoop+ > > MaxPayload 128 bytes, MaxReadReq 512 bytes > > DevSta: CorrErr- UncorrErr- FatalErr- UnsuppReq- AuxPwr- > TransPend+ > > LnkCap: Port #0, Speed 5GT/s, Width x2, ASPM not supported, > Exit Latency L0s unlimited, L1 unlimited > > ClockPM- Surprise- LLActRep- BwNot+ ASPMOptComp+ > > LnkCtl: ASPM Disabled; RCB 64 bytes Disabled- CommClk- > > ExtSynch- ClockPM- AutWidDis- BWInt- AutBWInt- > > LnkSta: Speed 2.5GT/s, Width x1, TrErr- Train- SlotClk+ > DLActive- BWMgmt- ABWMgmt- > > RootCtl: ErrCorrectable- ErrNon-Fatal- ErrFatal- PMEIntEna- > CRSVisible+ > > RootCap: CRSVisible+ > > RootSta: PME ReqID 0000, PMEStatus- PMEPending- > > DevCap2: Completion Timeout: Range B, TimeoutDis+, LTR-, > OBFF Not Supported ARIFwd- > > DevCtl2: Completion Timeout: 50us to 50ms, TimeoutDis-, LTR-, > OBFF Disabled ARIFwd- > > LnkCtl2: Target Link Speed: 5GT/s, EnterCompliance- SpeedDis- > > Transmit Margin: Normal Operating Range, > EnterModifiedCompliance- ComplianceSOS- > > Compliance De-emphasis: -6dB > > LnkSta2: Current De-emphasis Level: -3.5dB, > EqualizationComplete-, EqualizationPhase1- > > EqualizationPhase2-, EqualizationPhase3-, > LinkEqualizationRequest- > > Capabilities: [100 v1] Device Serial Number 00-00-00-00-00-00-00-00 > > Capabilities: [10c v1] Virtual Channel > > Caps: LPEVC=3D0 RefClk=3D100ns PATEntryBits=3D1 > > Arb: Fixed- WRR32- WRR64- WRR128- > > Ctrl: ArbSelect=3DFixed > > Status: InProgress- > > VC0: Caps: PATOffset=3D00 MaxTimeSlots=3D1 RejSnoopTrans- > > Arb: Fixed- WRR32- WRR64- WRR128- TWRR128- > WRR256- > > Ctrl: Enable+ ID=3D0 ArbSelect=3DFixed TC/VC=3Dff > > Status: NegoPending- InProgress- > > Capabilities: [128 v1] Vendor Specific Information: ID=3D1234 Rev=3D1 > > Len=3D018 > > > > 01:00.0 Network controller: Qualcomm Atheros AR93xx Wireless Network > Adapter (rev 01) > > Subsystem: Qualcomm Atheros Device 3112 > > Control: I/O- Mem+ BusMaster+ SpecCycle- MemWINV- VGASnoop- > ParErr- Stepping- SERR- FastB2B- DisINTx- > > Status: Cap+ 66MHz- UDF- FastB2B- ParErr- DEVSEL=3Dfast >TAbort- > SERR- > Latency: 0, Cache Line Size: 128 bytes > > Interrupt: pin A routed to IRQ 224 > > Region 0: Memory at e0000000 (64-bit, non-prefetchable) [size=3D128K] > > [virtual] Expansion ROM at e0020000 [disabled] [size=3D64K] > > Capabilities: [40] Power Management version 3 > > Flags: PMEClk- DSI- D1+ D2- AuxCurrent=3D375mA > PME(D0+,D1+,D2-,D3hot+,D3cold-) > > Status: D0 NoSoftRst- PME-Enable- DSel=3D0 DScale=3D0 PME- > > Capabilities: [50] MSI: Enable- Count=3D1/4 Maskable+ 64bit+ > > Address: 0000000000000000 Data: 0000 > > Masking: 00000000 Pending: 00000000 > > Capabilities: [70] Express (v2) Endpoint, MSI 00 > > DevCap: MaxPayload 128 bytes, PhantFunc 0, Latency > L0s <1us, L1 <8us > > ExtTag- AttnBtn- AttnInd- PwrInd- RBE+ FLReset- > SlotPowerLimit 0.000W > > DevCtl: Report errors: Correctable- Non-Fatal- Fatal- > Unsupported- > > RlxdOrd+ ExtTag- PhantFunc- AuxPwr- NoSnoop- > > MaxPayload 128 bytes, MaxReadReq 512 bytes > > DevSta: CorrErr- UncorrErr- FatalErr- UnsuppReq- AuxPwr- > TransPend- > > LnkCap: Port #0, Speed 2.5GT/s, Width x1, ASPM L0s L1, Exit > Latency L0s <2us, L1 <64us > > ClockPM- Surprise- LLActRep- BwNot- ASPMOptComp- > > LnkCtl: ASPM Disabled; RCB 64 bytes Disabled- CommClk- > > ExtSynch- ClockPM- AutWidDis- BWInt- AutBWInt- > > LnkSta: Speed 2.5GT/s, Width x1, TrErr- Train- SlotClk+ > DLActive- BWMgmt- ABWMgmt- > > DevCap2: Completion Timeout: Not Supported, TimeoutDis+, > LTR-, OBFF Not Supported > > DevCtl2: Completion Timeout: 50us to 50ms, TimeoutDis-, LTR-, > OBFF Disabled > > LnkCtl2: Target Link Speed: 2.5GT/s, EnterCompliance- > SpeedDis- > > Transmit Margin: Normal Operating Range, > EnterModifiedCompliance- ComplianceSOS- > > Compliance De-emphasis: -6dB > > LnkSta2: Current De-emphasis Level: -6dB, > EqualizationComplete-, EqualizationPhase1- > > EqualizationPhase2-, EqualizationPhase3-, > LinkEqualizationRequest- > > Capabilities: [100 v1] Advanced Error Reporting > > UESta: DLP- SDES- TLP- FCP- CmpltTO- CmpltAbrt- UnxCmplt- > RxOF- MalfTLP- ECRC- UnsupReq- ACSViol- > > UEMsk: DLP- SDES- TLP- FCP- CmpltTO- CmpltAbrt- UnxCmplt- > RxOF- MalfTLP- ECRC- UnsupReq- ACSViol- > > UESvrt: DLP+ SDES+ TLP- FCP+ CmpltTO- CmpltAbrt- UnxCmplt- > RxOF+ MalfTLP+ ECRC- UnsupReq- ACSViol- > > CESta: RxErr- BadTLP- BadDLLP- Rollover- Timeout- > NonFatalErr- > > CEMsk: RxErr- BadTLP- BadDLLP- Rollover- Timeout- > NonFatalErr+ > > AERCap: First Error Pointer: 00, GenCap- CGenEn- > ChkCap- ChkEn- > > Capabilities: [140 v1] Virtual Channel > > Caps: LPEVC=3D0 RefClk=3D100ns PATEntryBits=3D1 > > Arb: Fixed- WRR32- WRR64- WRR128- > > Ctrl: ArbSelect=3DFixed > > Status: InProgress- > > VC0: Caps: PATOffset=3D00 MaxTimeSlots=3D1 RejSnoopTrans- > > Arb: Fixed- WRR32- WRR64- WRR128- TWRR128- > WRR256- > > Ctrl: Enable+ ID=3D0 ArbSelect=3DFixed TC/VC=3Dff > > Status: NegoPending- InProgress- > > Capabilities: [300 v1] Device Serial Number 00-00-00-00-00-00-00-00 > > Kernel driver in use: ath9k > > > > Here is the cat /proc/interrupts (after we do interface up): > > > > root@:~# ifconfig wlan0 up > > [ 1548.926601] IPv6: ADDRCONF(NETDEV_UP): wlan0: link is not ready > > root@Xilinx-ZCU102-2016_3:~# cat /proc/interrupts > > CPU0 CPU1 CPU2 CPU3 > > 1: 0 0 0 0 GICv2 29 Edge = arch_timer > > 2: 19873 20058 19089 17435 GICv2 30 Edge = arch_timer > > 12: 0 0 0 0 GICv2 156 Level = zynqmp-dma > > 13: 0 0 0 0 GICv2 157 Level = zynqmp-dma > > 14: 0 0 0 0 GICv2 158 Level = zynqmp-dma > > 15: 0 0 0 0 GICv2 159 Level = zynqmp-dma > > 16: 0 0 0 0 GICv2 160 Level = zynqmp-dma > > 17: 0 0 0 0 GICv2 161 Level = zynqmp-dma > > 18: 0 0 0 0 GICv2 162 Level = zynqmp-dma > > 19: 0 0 0 0 GICv2 163 Level = zynqmp-dma > > 20: 0 0 0 0 GICv2 164 Level = Mali_GP_MMU, Mali_GP, > Mali_PP0_MMU, Mali_PP0, Mali_PP1_MMU, Mali_PP1 > > 30: 0 0 0 0 GICv2 95 Level = eth0, eth0 > > 206: 314 0 0 0 GICv2 49 Level = cdns-i2c > > 207: 40 0 0 0 GICv2 50 Level = cdns-i2c > > 209: 0 0 0 0 GICv2 150 Level = nwl_pcie:misc > > 214: 12 0 0 0 GICv2 47 Level = ff0f0000.spi > > 215: 0 0 0 0 GICv2 58 Level = ffa60000.rtc > > 216: 0 0 0 0 GICv2 59 Level = ffa60000.rtc > > 217: 0 0 0 0 GICv2 165 Level = ahci-ceva[fd0c0000.ahci] > > 218: 61 0 0 0 GICv2 81 Level = mmc0 > > 219: 0 0 0 0 GICv2 187 Level = arm-smmu global fault > > 220: 471 0 0 0 GICv2 53 Level = xuartps > > 223: 0 0 0 0 GICv2 154 Level = fd4c0000.dma > > 224: 3 0 0 0 dummy 1 Edge = ath9k > > 225: 0 0 0 0 GICv2 97 Level = xhci-hcd:usb1 > > > > Regards, > > Bharat >=20 > -- > Kalle Valo