一個(gè)中斷的panic

star316

整個(gè)系統(tǒng)包括USB suspend 后， 通過(guò)信號(hào)喚醒系統(tǒng)， 但是到USB resume 的時(shí)候出現(xiàn)下面的PANIC是什么原因引起的？？ 請(qǐng)幫看看，謝謝！

irq 76: nobody cared (try booting with the "irqpoll" option)
[  126.889007] [<c03d7ee8>] (dump_stack+0x0/0x14) from [<c00a3014>] (__report_bad_irq+0x38/0x94)
[  126.898712] [<c00a2fdc>] (__report_bad_irq+0x0/0x94) from [<c00a31c0>] (note_interrupt+0x150/0x1d8)
[  126.908905]  r5:0000004c r4:c05034c8
[  126.913085] [<c00a3070>] (note_interrupt+0x0/0x1d8) from [<c00a3c88>] (handle_level_irq+0xf8/0x170)
[  126.923309] [<c00a3b90>] (handle_level_irq+0x0/0x170) from [<c003c054>] (__exception_text_start+0x54/0x6c)
[  126.934143]  r7:00000103 r6:cec50000 r5:cec51e80 r4:0000004c
[  126.940826] [<c003c000>] (__exception_text_start+0x0/0x6c) from [<c003ca04>] (__irq_svc+0x44/0xa4)
[  126.950805] Exception stack(0xcec51dd8 to 0xcec51e20)
[  126.956359] 1dc0:                                                       00001000 00000001
[  126.966491] 1de0: cec51e20 00000102 00000000 00000002 cec50000 c0574960 00000000 00000000
[  126.976715] 1e00: 0000000a cec51e54 cec51e58 cec51e20 c00758f8 c00757fc 20000113 ffffffff
[  126.986938]  r5:d8200000 r4:ffffffff
[  126.991119] [<c00757b4>] (__do_softirq+0x0/0xf8) from [<c00758f8>] (irq_exit+0x4c/0xac)
[  127.000244] [<c00758ac>] (irq_exit+0x0/0xac) from [<c003c058>] (__exception_text_start+0x58/0x6c)
[  127.010253] [<c003c000>] (__exception_text_start+0x0/0x6c) from [<c003ca04>] (__irq_svc+0x44/0xa4)
[  127.020263] Exception stack(0xcec51e80 to 0xcec51ec8)
[  127.025817] 1e80: cdbf8e08 00000000 c0512888 c0512a6c 00000000 00000000 00000003 00000000
[  127.036071] 1ea0: c05017f0 00000000 c05017ec cec51ed4 cec51ed8 cec51ec8 c0099cb4 c0099a30
[  127.046173] 1ec0: 60000013 ffffffff                                                      
[  127.056427]  r5:d8200000 r4:ffffffff
[  127.060607] [<c0099a20>] (arch_suspend_enable_irqs+0x0/0x14) from [<c0099cb4>] (suspend_devices_and_enter+0xf0/0x16c)
[  127.072479] [<c0099bc4>] (suspend_devices_and_enter+0x0/0x16c) from [<c0099e6c>] (pm_suspend+0xd0/0x12c)
[  127.083129]  r7:00000000 r6:c05017c8 r5:00000003 r4:c057886c
[  127.089904] [<c0099d9c>] (pm_suspend+0x0/0x12c) from [<c009aa14>] (suspend+0x68/0x12c)
[  127.098815]  r5:c05017c8 r4:00000077
[  127.102996] [<c009a9ac>] (suspend+0x0/0x12c) from [<c0081904>] (run_workqueue+0xe0/0x19c)
[  127.112152]  r6:c009a9ac r5:cec50000 r4:cec01fa0
[  127.117706] [<c0081824>] (run_workqueue+0x0/0x19c) from [<c0082114>] (worker_thread+0x104/0x118)
[  127.127624] [<c0082010>] (worker_thread+0x0/0x118) from [<c0085db8>] (kthread+0x5c/0x98)
[  127.136718]  r7:00000000 r6:cec01fa0 r5:c0082010 r4:cec50000
[  127.143493] [<c0085d5c>] (kthread+0x0/0x98) from [<c00735e0>] (do_exit+0x0/0x784)
[  127.151947]  r7:00000000 r6:00000000 r5:00000000 r4:00000000
[  127.158721] handlers:
[  127.161254] [<c0269210>] (usb_hcd_irq+0x0/0x98)
[  127.166442] Disabling IRQ #76
[  127.297821] Clock usbhost_48m_fck didn't enable in 100000 tries
[  127.304290] Unhandled fault: external abort on non-linefetch (0x1028) at 0xd8064404
[  127.312622] Internal error: : 1028 [#1] PREEMPT
[  127.317504] Modules linked in:
[  127.321136] CPU: 0    Tainted: G        W   (2.6.29-omap1 #1)
[  127.327331] PC is at ohci_omap_resume+0x7c/0x18c
[  127.332427] LR is at release_console_sem+0x1b8/0x218
[  127.337799] pc : [<c027b92c>]    lr : [<c0070758>]    psr: 40000013
[  127.337799] sp : cec51e40  ip : cec51ce8  fp : cec51e5c
[  127.350250] r10: 00000003  r9 : cec51ea0  r8 : c04fa808
[  127.355865] r7 : c04fa830  r6 : cc7e8cd8  r5 : c0512a6c  r4 : cc7e8c00
[  127.362976] r3 : d8064400  r2 : 00000006  r1 : 60000093  r0 : 00000000
[  127.370086] Flags: nZcv  IRQs on  FIQs on  Mode SVC_32  ISA ARM  Segment kernel
[  127.377899] Control: 10c5387d  Table: 8df14019  DAC: 00000017

[[i] 本帖最后由 dreamice 于 2010-1-25 18:08 編輯 [/i]]

ljysyn

是不是這里的錯(cuò)誤？
[  127.161254] [<c0269210>] usb_hcd_irq+0x0/0x9
[  127.166442] Disabling IRQ #76
[  127.297821] Clock usbhost_48m_fck didn't enable in 100000 tries
[  127.304290] Unhandled fault: external abort on non-linefetch (0x102 at 0xd8064404
[  127.312622] Internal error: : 1028 [#1] PREEMPT

star316

這個(gè)內(nèi)容是因?yàn)閔id irq 收到無(wú)法識(shí)別的中斷， 導(dǎo)致了DISABLE IRQ 的情況， 但是不知道為什么會(huì)導(dǎo)致48M時(shí)鐘打不開(kāi)的情況

emmoblin

[  127.166442] Disabling IRQ #76
[  127.297821] Clock usbhost_48m_fck didn't enable in 100000 tries
[  127.304290] Unhandled fault: external abort on non-linefetch (0x102 at 0xd8064404
[  127.312622] Internal error: : 1028 [#1] PREEMPT

這幾句很可疑

star316

是的， 這個(gè)是USB REMOTE WAKEUP 引起的PANIC， 我在SUSPEND 的時(shí)候關(guān)閉了這個(gè)中斷，RESUME 的時(shí)候打開(kāi)，采用別的方式喚醒，這個(gè)問(wèn)題可以繞過(guò)， 但是還是有其它的PANIC， 關(guān)鍵是PANIC 的LOG 打印不出來(lái)，整個(gè)控制臺(tái)的輸出都關(guān)閉了， 一點(diǎn)信息都查不到。

llzzccc

原帖由 star316 于 2010-1-20 17:26 發(fā)表
是的， 這個(gè)是USB REMOTE WAKEUP 引起的PANIC， 我在SUSPEND 的時(shí)候關(guān)閉了這個(gè)中斷，RESUME 的時(shí)候打開(kāi)，采用別的方式喚醒，這個(gè)問(wèn)題可以繞過(guò)， 但是還是有其它的PANIC， 關(guān)鍵是PANIC 的LOG 打印不出來(lái)，整個(gè)控 ...

一個(gè)疑問(wèn)，你在suspend的時(shí)候，關(guān)閉了這個(gè)中斷，是什么意思？是不是說(shuō)系統(tǒng)對(duì)這個(gè)中斷不響應(yīng)了？那在resume的時(shí)候，系統(tǒng)如何判斷這個(gè)中斷呢？
這個(gè)resume是什么時(shí)候調(diào)用的？
我也是很疑惑suspend和resume的問(wèn)題。

star316

我用的是OMAP 的CPU，外部連接了個(gè)PHY ，SUSPEND 時(shí)候利用的是一個(gè)IODASIY 的方式喚醒系統(tǒng)，然后自己調(diào)用涵數(shù)喚醒USB 總線，所以可以關(guān)閉HCD 的中斷

T-Bagwell

[  127.321136] CPU: 0    Tainted: G        W   (2.6.29-omap1 #1)
[  127.327331] PC is at ohci_omap_resume+0x7c/0x18c
[  127.332427] LR is at release_console_sem+0x1b8/0x218
[  127.337799] pc : [<c027b92c>]    lr : [<c0070758>]    psr: 40000013
[  127.337799] sp : cec51e40  ip : cec51ce8  fp : cec51e5c
[  127.350250] r10: 00000003  r9 : cec51ea0  r8 : c04fa808
[  127.355865] r7 : c04fa830  r6 : cc7e8cd8  r5 : c0512a6c  r4 : cc7e8c00
[  127.362976] r3 : d8064400  r2 : 00000006  r1 : 60000093  r0 : 00000000
[  127.370086] Flags: nZcv  IRQs on  FIQs on  Mode SVC_32  ISA ARM  Segment kernel
[  127.377899] Control: 10c5387d  Table: 8df14019  DAC: 00000017
ohci_omap_resume  相對(duì)0x7c行
release_console_sem  相對(duì)1b8行
兩個(gè)接口,反匯編一下,然后對(duì)應(yīng)上,然后看看是不是和r0有關(guān)系

angelawushuang

我用的也是OMAP,我有個(gè)3G模塊通過(guò)USB口和OMAP相連，無(wú)法識(shí)別該USB設(shè)備。具體情況如下：
1 內(nèi)核中沒(méi)加入EHCI驅(qū)動(dòng)時(shí)，

插入模塊后，自動(dòng)報(bào)錯(cuò)，如下：
[MiniBoard]# usb 1-1: reset high speed USB device using musb_hdrc and address 2
usb 1-1.3: new high speed USB device using musb_hdrc and address 6
usb 1-1.3: device not accepting address 6, error -71
usb 1-1.3: new high speed USB device using musb_hdrc and address 7
usb 1-1.3: device not accepting address 7, error -71
usb 1-1.3: new high speed USB device using musb_hdrc and address 8
hub 1-1:1.0: unable to enumerate USB device on port 3

[MiniBoard]# dmesg
usb usb1: usb resume
hub 1-0:1.0: hub_resume
hub 1-0:1.0: port 1: status 0503 change 0004
hub 1-0:1.0: state 7 ports 1 chg 0002 evt 0000
usb 1-1: usb wakeup-resume
usb 1-1: finish resume
usb 1-1: retry with reset-resume
usb 1-1: reset high speed USB device using musb_hdrc and address 2
hub 1-1:1.0: hub_reset_resume
hub 1-1:1.0: enabling power on all ports
hub 1-1:1.0: port 3: status 0101 change 0001
hub 1-0:1.0: resume on port 1, status 0
hub 1-0:1.0: port 1, status 0503, change 0004, 480 Mb/s
hub 1-0:1.0: state 7 ports 1 chg 0000 evt 0002
hub 1-0:1.0: port 1 enable change, status 00000503
hub 1-1:1.0: state 7 ports 4 chg 0008 evt 0000
hub 1-1:1.0: port 3, status 0101, change 0000, 12 Mb/s
usb 1-1.3: new high speed USB device using musb_hdrc and address 6
usb 1-1.3: device not accepting address 6, error -71
usb 1-1.3: new high speed USB device using musb_hdrc and address 7
usb 1-1.3: device not accepting address 7, error -71
usb 1-1.3: new high speed USB device using musb_hdrc and address 8
hub 1-1:1.0: unable to enumerate USB device on port 3
hub 1-1:1.0: state 7 ports 4 chg 0000 evt 0008
hub 1-1:1.0: port 3, status 0100, change 0001, 12 Mb/s
hub 1-1:1.0: debounce: port 3: total 100ms stable 100ms status 0x100
hub 1-1:1.0: hub_suspend
usb 1-1: usb auto-suspend
hub 1-0:1.0: hub_suspend
usb usb1: bus auto-suspend

[MiniBoard]# tail /var/log/messages
Jan 1 00:00:02 $HOSTNAME syslog.info syslogd started: BusyBox v1.12.2
Jan 1 00:08:21 $HOSTNAME syslog.info syslogd exiting
Jan 1 00:08:47 $HOSTNAME syslog.info syslogd started: BusyBox v1.12.2
Jan 1 00:00:01 $HOSTNAME syslog.info syslogd started: BusyBox v1.12.2
Jan 1 00:00:33 $HOSTNAME syslog.info syslogd exiting
Jan 1 00:00:59 $HOSTNAME syslog.info syslogd started: BusyBox v1.12.2
Jan 1 00:19:25 $HOSTNAME syslog.info syslogd exiting
Jan 1 00:19:48 $HOSTNAME syslog.info syslogd started: BusyBox v1.12.2
Jan 1 00:24:40 $HOSTNAME syslog.info syslogd started: BusyBox v1.12.2
Jan 1 00:00:02 $HOSTNAME syslog.info syslogd started: BusyBox v1.12.2



2 加入EHCI驅(qū)動(dòng)后，都不會(huì)自動(dòng)報(bào)錯(cuò)，查看dmesg都沒(méi)有任何可顯示的信息。
而且上次通過(guò)USB View查看到此設(shè)備是full speed，掛在UHCI下。

請(qǐng)問(wèn)怎么回事？？

star316

如果是FULL SPEED 的設(shè)備的話，OMAP 用的是PORT3， 你需要自己做一些寄存器的初始化。