Return-path: Received: from mail-by2nam03on0046.outbound.protection.outlook.com ([104.47.42.46]:59712 "EHLO NAM03-BY2-obe.outbound.protection.outlook.com" rhost-flags-OK-OK-OK-FAIL) by vger.kernel.org with ESMTP id S1752278AbcLJOk6 (ORCPT ); Sat, 10 Dec 2016 09:40:58 -0500 From: Bharat Kumar Gogada To: Tobias Klausmann , Kalle Valo CC: Bjorn Helgaas , "linux-kernel@vger.kernel.org" , "linux-pci@vger.kernel.org" , Marc Zyngier , "Janusz.Dziedzic@tieto.com" , "rmanohar@qti.qualcomm.com" , "ath9k-devel@qca.qualcomm.com" , "linux-wireless@vger.kernel.org" Subject: RE: ATH9 driver issues on ARM64 Date: Sat, 10 Dec 2016 14:40:48 +0000 Message-ID: <8520D5D51A55D047800579B094147198263A8EF9@XAP-PVEXMBX02.xlnx.xilinx.com> (sfid-20161210_154128_526275_BE00B824) 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> <8b348550-d909-cd98-4c04-dcf37b41f1ee@mni.thm.de> In-Reply-To: <8b348550-d909-cd98-4c04-dcf37b41f1ee@mni.thm.de> Content-Type: text/plain; charset="us-ascii" MIME-Version: 1.0 Sender: linux-wireless-owner@vger.kernel.org List-ID: Hi, After taking some more lecroy traces, we see that after 2nd ASSERT from EP = on ARM64 we see continuous data movement of 32 dwords or 12 dwords and neve= r sign of DEASSERT. Comparatively on working traces (x86) after 2nd assert there are only BAR r= egister reads and writes and then DEASSERT, for almost most of the interrup= ts and we haven't seen 12 or 32 dwords data movement on this trace. I did not work on EP wifi/network drivers, any help why EP needs those many= number of data at scan time ? Regards, Bharat =20 > Hello there, >=20 > as this is a thread about ath9k and ARM64, i'm not sure if i should answe= r here > or not, but i have similar "stalls" with ath9k on x86_64 (starting with 4= .9rc), stack > trace is posted down below where the original ARM64 stall traces are. >=20 > Greetings, >=20 > Tobias >=20 >=20 > On 08.12.2016 18:36, Kalle Valo wrote: > > Bharat Kumar Gogada writes: > > > >> > [+cc Kalle, ath9k list] > > Thanks, but please also CC linux-wireless. Full thread below for the > > folks there. > > > >>> 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 happenin= g > 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 r= esult. > >> > >> 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 0= x00000002 > >> [ 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 0= x00000002 > >> ** 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(0xffffffc87b07= f870 > to 0xffffffc87b07f990) > >> [ 545.526306] f860: 000000000000973= 2 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_interrup= ts > 793 > >> [ 545.532890] ath9k_hw_enable_interrupts 821 >=20 > [ 81.876902] INFO: rcu_preempt detected stalls on CPUs/tasks: > [ 81.876912] Tasks blocked on level-0 rcu_node (CPUs 0-7): P0 > [ 81.876932] (detected by 4, t=3D60002 jiffies, g=3D1873, c=3D1872,= q=3D4967) > [ 81.876936] swapper/4 R running task 0 0 1 > 0x00000000 > [ 81.876941] 0000000000000001 ffffffff810725f6 ffff88017edbc240 > ffffffff81a3dc40 > [ 81.876945] ffffffff81101e46 ffff88025ef173c0 ffffffff81a3dc40 > ffffffff81a3dc40 > [ 81.876948] 00000000ffffffff ffffffff810a7333 ffff88017ecee698 > ffff88017edbc240 > [ 81.876951] Call Trace: > [ 81.876970] > [ 81.876979] [] ? sched_show_task+0xd6/0x140 > [ 81.876983] [] ? > rcu_print_detail_task_stall_rnp+0x40/0x61 > [ 81.876989] [] ? rcu_check_callbacks+0x6b3/0x8c0 > [ 81.876993] [] ? tick_sched_handle.isra.14+0x40/0x4= 0 > [ 81.876996] [] ? update_process_times+0x23/0x50 > [ 81.876999] [] ? tick_sched_timer+0x33/0x60 > [ 81.877002] [] ? __hrtimer_run_queues+0xb9/0x150 > [ 81.877004] [] ? hrtimer_interrupt+0x98/0x1a0 > [ 81.877008] [] ? > smp_trace_apic_timer_interrupt+0x5e/0x90 > [ 81.877012] [] ? apic_timer_interrupt+0x7f/0x90 > [ 81.877013] > [ 81.877017] [] ? cpuidle_enter_state+0x13d/0x1f0 > [ 81.877019] [] ? cpuidle_enter_state+0x139/0x1f0 > [ 81.877021] [] ? cpu_startup_entry+0x139/0x210 > [ 81.877027] [] ? start_secondary+0x13e/0x170 > [ 81.877029] swapper/4 R running task 0 0 1 > 0x00000000 > [ 81.877032] 0000000000000001 ffffffff810725f6 ffff88017edbc240 > ffffffff81a3dc40 > [ 81.877035] ffffffff81101e46 ffff88025ef173c0 ffffffff81a3dc40 > ffffffff81a3dc40 > [ 81.877038] 00000000ffffffff ffffffff810a7368 ffff88017ecee698 > ffff88017edbc240 > [ 81.877041] Call Trace: > [ 81.877045] > [ 81.877049] [] ? sched_show_task+0xd6/0x140 > [ 81.877051] [] ? > rcu_print_detail_task_stall_rnp+0x40/0x61 > [ 81.877055] [] ? rcu_check_callbacks+0x6e8/0x8c0 > [ 81.877058] [] ? tick_sched_handle.isra.14+0x40/0x4= 0 > [ 81.877060] [] ? update_process_times+0x23/0x50 > [ 81.877063] [] ? tick_sched_timer+0x33/0x60 > [ 81.877065] [] ? __hrtimer_run_queues+0xb9/0x150 > [ 81.877068] [] ? hrtimer_interrupt+0x98/0x1a0 > [ 81.877070] [] ? > smp_trace_apic_timer_interrupt+0x5e/0x90 > [ 81.877073] [] ? apic_timer_interrupt+0x7f/0x90 > [ 81.877074] > [ 81.877076] [] ? cpuidle_enter_state+0x13d/0x1f0 > [ 81.877078] [] ? cpuidle_enter_state+0x139/0x1f0 > [ 81.877080] [] ? cpu_startup_entry+0x139/0x210 > [ 81.877084] [] ? start_secondary+0x13e/0x170 > [ 91.132787] INFO: rcu_preempt detected expedited stalls on > CPUs/tasks: { P0 } 63785 jiffies s: 505 root: 0x0/T > [ 91.132796] blocking rcu_node structures: >=20 > >> > >> > >> 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=3D= 11) > >> [ 75.982485] Task dump for CPU 0: > >> [ 75.985696] ksoftirqd/0 R running task 0 3 2 0= x00000002 > >> [ 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= =3D11) > >> [ 139.078489] Task dump for CPU 0: > >> [ 139.081700] ksoftirqd/0 R running task 0 3 2 0= x00000002 > >> [ 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