[Xenomai] interrupt on edge problem, unexpected IRQ trap

branislav.sasic at automatika.imp.bg.ac.rs branislav.sasic at automatika.imp.bg.ac.rs
Tue Feb 27 14:51:48 CET 2018


Thank you for your help Greg & Philippe!

I merged gpio-omap.c from 4.14 kernel to my 4.11 kernel, result is freezed
cpu after interrupt. Then, I compiled 4.14 latest ipipe-arm kernel from
git (nothing added, nothing removed), and similar thing happens. Only I
could see some time after, until complete freeze, are messages

[   62.463002] unexpected IRQ trap at vector 3f
[   63.643847] unexpected IRQ trap at vector 3f
[   63.648204] unexpected IRQ trap at vector 3f
[   65.605123] unexpected IRQ trap at vector 3f
[   66.418225] unexpected IRQ trap at vector 3f

Tested through sysfs gpio interface.


Branislav



> As Philippe mentioned, they are some missing pieces that need to be
> added to the ipipe.  The link Philippe provided will give you guidance
> on how to make those changes to your custom kernel.  The other option
> is you could use the ipipe-arm tree and the mainline kernel.  Also,
> unrelated, the gpios that are exposed in sysfs are not RTDM gpios.
> There currently isn't a RTDM driver for beaglebone gpio, but one can
> be added very easily.
>
>
> -Greg
>
> On Mon, Feb 26, 2018 at 1:05 PM,
> <branislav.sasic at automatika.imp.bg.ac.rs> wrote:
>> Xenomai 3.0.6, and ipipe-core-4.9.51-arm-3, patched on sunxi 4.11.2
>> kernel
>> (with BeagleBone patches applied too). Same situation with this kernel
>> ->
>> https://github.com/beagleboard/linux/tree/4.9-xenomai
>>
>>
>> Just as Giulio wrote, GPIO is configured with:
>>
>> echo 60 > /sys/class/gpio/export
>> echo both > /sys/class/gpio/gpio60/edge
>>
>> or in kernel module init routine with:
>>
>> gpio_request(gpio, "test");
>> gpio_direction_input(gpio);
>> irq = gpio_to_irq(gpio);
>> irq_set_irq_type(irq, IRQF_TRIGGER_FALLING | IRQF_TRIGGER_RISING);
>> rtdm_irq_request(&irq_handle, irq, test_isr, RTDM_IRQTYPE_EDGE,
>> DRIVER_NAME, NULL);
>> rtdm_irq_enable(&irq_handle);
>>
>>
>> Both reproduce the problem. In the second case, when requested with
>> rtdm_irq_request, IRQ is visible both in /proc/interrupts, and in
>> /proc/xenomai/irq
>>
>>
>> Thanks!
>>
>>
>> Branislav
>>
>>
>>> Can you provide what version of Xenomai you are using and what ipipe
>> patch you are using?  It also may be helpful if you could provide some
>> sort of sample code that reproduces the problem.
>>>
>>> -Greg
>>>
>>> On Mon, Feb 26, 2018 at 8:46 AM,
>>> <branislav.sasic at automatika.imp.bg.ac.rs> wrote:
>>>> Hello,
>>>> I have a problem with new I-pipe patch, which was not existing with
>>>> legacy
>>>> patch on 3.14 kernel, on BeagleBone platform.
>>>> When GPIO pin is configured as input with edge interrupt enable, on
>>>> IRQ
>> occurrence the following message appears:
>>>> [  303.331386] irq 88, desc: dc1be400, depth: 0, count: 0, unhandled:
>>>> 0
>> [  303.331401] ->handle_irq():  c01a810c,
>>>> [  303.331435] handle_edge_irq+0x0/0x194
>>>> [  303.331442] ->irq_data.chip(): dc097b50,
>>>> [  303.331454] 0xdc097b50
>>>> [  303.331461] ->action(): da097380
>>>> [  303.331467] ->action->handler(): c078dce4,
>>>> [  303.331483] gpio_sysfs_irq+0x0/0x24
>>>> [  303.331493]    IRQ_NOPROBE set
>>>> [  303.331503] unexpected IRQ trap at vector 58
>>>> [  303.335814] ------------[ cut here ]------------
>>>> [  303.335832] WARNING: CPU: 0 PID: 0 at kernel/irq/chip.c:883
>>>> __ipipe_ack_bad_irq+0x3c/0x48
>>>> [  303.335839] Modules linked in:
>>>> [  303.335863] CPU: 0 PID: 0 Comm: swapper/0 Not tainted 4.9.82 #2 [
>> 303.335871] Hardware name: Generic AM33XX (Flattened Device Tree) [
>> 303.335878] I-pipe domain: Linux
>>>> [  303.335918] [<c0113520>] (unwind_backtrace) from [<c010d320>]
>> (show_stack+0x20/0x24)
>>>> [  303.335946] [<c010d320>] (show_stack) from [<c073c99c>]
>>>> (dump_stack+0xbc/0xec)
>>>> [  303.335968] [<c073c99c>] (dump_stack) from [<c013dddc>]
>>>> (__warn+0xe4/0x110)
>>>> [  303.335984] [<c013dddc>] (__warn) from [<c013de38>]
>>>> (warn_slowpath_null+0x30/0x38)
>>>> [  303.335998] [<c013de38>] (warn_slowpath_null) from [<c01a74a0>]
>> (__ipipe_ack_bad_irq+0x3c/0x48)
>>>> [  303.336027] [<c01a74a0>] (__ipipe_ack_bad_irq) from [<c020ccdc>]
>> (__ipipe_dispatch_irq+0x80/0x1e4)
>>>> [  303.336048] [<c020ccdc>] (__ipipe_dispatch_irq) from [<c0790630>]
>> (omap_gpio_irq_handler+0x15c/0x1d0)
>>>> [  303.336066] [<c0790630>] (omap_gpio_irq_handler) from [<c01a3874>]
>> (__handle_irq_event_percpu+0x68/0x2bc)
>>>> [  303.336081] [<c01a3874>] (__handle_irq_event_percpu) from
>>>> [<c01a3af4>]
>>>> (handle_irq_event_percpu+0x2c/0x68)
>>>> [  303.336095] [<c01a3af4>] (handle_irq_event_percpu) from
>>>> [<c01a3b78>]
>> (handle_irq_event+0x48/0x6c)
>>>> [  303.336111] [<c01a3b78>] (handle_irq_event) from [<c01a8348>]
>> (handle_level_irq+0xa8/0xfc)
>>>> [  303.336127] [<c01a8348>] (handle_level_irq) from [<c01a2ea0>]
>> (generic_handle_irq+0x28/0x38)
>>>> [  303.336141] [<c01a2ea0>] (generic_handle_irq) from [<c01a3014>]
>> (__handle_domain_irq+0x8c/0x10c)
>>>> [  303.336164] [<c01a3014>] (__handle_domain_irq) from [<c0109c28>]
>> (handle_IRQ+0x2c/0x30)
>>>> [  303.336182] [<c0109c28>] (handle_IRQ) from [<c0117990>]
>>>> (__ipipe_do_IRQ+0x38/0x40)
>>>> [  303.336198] [<c0117990>] (__ipipe_do_IRQ) from [<c020c4b4>]
>>>> (__ipipe_do_sync_stage+0x268/0x278)
>>>> [  303.336214] [<c020c4b4>] (__ipipe_do_sync_stage) from [<c020c820>]
>> (ipipe_unstall_root+0x50/0x5c)
>>>> [  303.336244] [<c020c820>] (ipipe_unstall_root) from [<c0cbb4c8>]
>> (default_idle_call+0x54/0x7c)
>>>> [  303.336271] [<c0cbb4c8>] (default_idle_call) from [<c0187c4c>]
>> (cpu_startup_entry+0xd0/0x144)
>>>> [  303.336289] [<c0187c4c>] (cpu_startup_entry) from [<c0cb5c80>]
>> (rest_init+0x80/0x98)
>>>> [  303.336315] [<c0cb5c80>] (rest_init) from [<c1300d08>]
>>>> (start_kernel+0x370/0x3d8)
>>>> [  303.336327] ---[ end trace fd2436447809c122 ]---
>>>> [  303.336343] irq 88, desc: dc1be400, depth: 0, count: 0, unhandled:
>>>> 0
>> [  303.336349] ->handle_irq():  c01a810c,
>>>> [  303.336361] handle_edge_irq+0x0/0x194
>>>> [  303.336367] ->irq_data.chip(): dc097b50,
>>>> [  303.336376] 0xdc097b50
>>>> [  303.336382] ->action(): da097380
>>>> [  303.336389] ->action->handler(): c078dce4,
>>>> [  303.336399] gpio_sysfs_irq+0x0/0x24
>>>> [  303.336406]    IRQ_NOPROBE set
>>>> [  303.336413] unexpected IRQ trap at vector 58
>>>> [  306.761879] irq 88, desc: dc1be400, depth: 0, count: 1, unhandled:
>>>> 0
>> [  306.761893] ->handle_irq():  c01a810c,
>>>> [  306.761928] handle_edge_irq+0x0/0x194
>>>> [  306.761935] ->irq_data.chip(): dc097b50,
>>>> [  306.761947] 0xdc097b50
>>>> [  306.761954] ->action(): da097380
>>>> [  306.761960] ->action->handler(): c078dce4,
>>>> [  306.761976] gpio_sysfs_irq+0x0/0x24
>>>> [  306.761985]    IRQ_NOPROBE set
>>>> [  306.761995] unexpected IRQ trap at vector 58
>>>> [  306.766311] irq 88, desc: dc1be400, depth: 0, count: 1, unhandled:
>>>> 0
>> [  306.766318] ->handle_irq():  c01a810c,
>>>> [  306.766330] handle_edge_irq+0x0/0x194
>>>> [  306.766336] ->irq_data.chip(): dc097b50,
>>>> [  306.766344] 0xdc097b50
>>>> [  306.766351] ->action(): da097380
>>>> [  306.766357] ->action->handler(): c078dce4,
>>>> [  306.766366] gpio_sysfs_irq+0x0/0x24
>>>> [  306.766373]    IRQ_NOPROBE set
>>>> [  306.766380] unexpected IRQ trap at vector 58
>>>> [  306.892617] irq 88, desc: dc1be400, depth: 0, count: 2, unhandled:
>>>> 0
>> [  306.892634] ->handle_irq():  c01a810c,
>>>> [  306.892666] handle_edge_irq+0x0/0x194
>>>> [  306.892673] ->irq_data.chip(): dc097b50,
>>>> [  306.892683] 0xdc097b50
>>>> [  306.892690] ->action(): da097380
>>>> [  306.892697] ->action->handler(): c078dce4,
>>>> [  306.892712] gpio_sysfs_irq+0x0/0x24
>>>> [  306.892723]    IRQ_NOPROBE set
>>>> [  306.892732] unexpected IRQ trap at vector 58
>>>> [  306.897047] irq 88, desc: dc1be400, depth: 0, count: 2, unhandled:
>>>> 0
>> [  306.897054] ->handle_irq():  c01a810c,
>>>> [  306.897065] handle_edge_irq+0x0/0x194
>>>> [  306.897071] ->irq_data.chip(): dc097b50,
>>>> [  306.897079] 0xdc097b50
>>>> [  306.897086] ->action(): da097380
>>>> [  306.897092] ->action->handler(): c078dce4,
>>>> [  306.897101] gpio_sysfs_irq+0x0/0x24
>>>> [  306.897108]    IRQ_NOPROBE set
>>>> [  306.897115] unexpected IRQ trap at vector 58
>>>> Best regards,
>>>> Branislav
>>>> _______________________________________________
>>>> Xenomai mailing list
>>>> Xenomai at xenomai.org
>>>> https://xenomai.org/mailman/listinfo/xenomai
>>>
>>> _______________________________________________
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>>> Xenomai at xenomai.org
>>> https://xenomai.org/mailman/listinfo/xenomai
>>>
>>
>>
>>
>>
>





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