I have started a new thread with a name that better describes the
failure I am seeing. This may or may not be the reason I was seeing root
file system mount hang on omap-2.6.31 (previous thread).
The SD card/MMC "Chip Detect" interrupt (activated when a SD card is
inserted or removed) can't be tested when the root file system is on the
SD card. So I rebuilt my 2.6.33 BeagleBoard system to mount the root
file system via NFS. Now the failure of Xenomai to handle twl4030
interrupts can be identified and isolated.
2.6.33 without the Adeos patch...
The Angstrom Distribution beagleboard ttyS2
Angstrom 2010.4-test-20100518 beagleboard ttyS2
beagleboard login: root
r...@beagleboard:~# cat /proc/interrupts
CPU0
7: 2 INTC TWL4030-PIH
12: 203 INTC DMA
37: 1219 INTC gp timer
56: 368 INTC i2c_omap
61: 0 INTC i2c_omap
74: 125 INTC serial
77: 10694 INTC ehci_hcd:usb2
83: 106 INTC mmc0
92: 1 INTC musb_hdrc
93: 0 INTC musb_hdrc
378: 2 twl4030 twl4030_usb
379: 0 twl4030 rtc0
384: 0 twl4030 mmc0
Err: 0
r...@beagleboard:~# ls /dev
block ram6 tty39
... snipped ...
mem tty2 tty58
mmcblk0 tty20 tty59
mmcblk0p1 tty21 tty6
mmcblk0p2 tty22 tty60
network_latency tty23 tty61
... snipped ...
r...@beagleboard:~# umount /dev/mmcblk0p1
r...@beagleboard:~# umount /dev/mmcblk0p2
****** I removed the SD card here ****************************
r...@beagleboard:~# [ 122.126495] mmc0: card 0007 removed
r...@beagleboard:~# ls /dev
block ram9 tty40
... snipped ...
mem tty21 tty59 <=== mmc entries are gone
network_latency tty22 tty6
... snipped ...
r...@beagleboard:~# cat /proc/interrupts
CPU0
7: 3 INTC TWL4030-PIH
12: 208 INTC DMA
37: 2477 INTC gp timer
56: 388 INTC i2c_omap
61: 0 INTC i2c_omap
74: 437 INTC serial
77: 12374 INTC ehci_hcd:usb2
83: 135 INTC mmc0
92: 1 INTC musb_hdrc
93: 0 INTC musb_hdrc
378: 2 twl4030 twl4030_usb
379: 0 twl4030 rtc0
384: 1 twl4030 mmc0 <===== notice the Chip Detect irpt
Err: 0
****** I reinserted the SD card here ****************************
r...@beagleboard:~# [ 270.691955] mmc0: new high speed SD card at
address 0007
[ 270.699981] mmcblk0: mmc0:0007 SD01G 972 MiB
[ 270.704742] mmcblk0: p1 p2
[ 271.448608] EXT2-fs (mmcblk0p2): warning: mounting ext3 filesystem as
ext2
[ 271.455749] EXT2-fs (mmcblk0p2): warning: mounting unchecked fs,
running e2fsck is recommended
r...@beagleboard:~# cat /proc/interrupts
CPU0
7: 4 INTC TWL4030-PIH
12: 358 INTC DMA
37: 3520 INTC gp timer
56: 416 INTC i2c_omap
61: 0 INTC i2c_omap
74: 625 INTC serial
77: 14021 INTC ehci_hcd:usb2
83: 247 INTC mmc0
92: 1 INTC musb_hdrc
93: 0 INTC musb_hdrc
378: 2 twl4030 twl4030_usb
379: 0 twl4030 rtc0
384: 2 twl4030 mmc0 <===== notice second Chip Detect irpt
Err: 0
2.6.33 with the Adeos patch and Xenomai enabled...
The Angstrom Distribution beagleboard ttyS2
Angstrom 2010.4-test-20100518 beagleboard ttyS2
beagleboard login: root
r...@beagleboard:~# cat /proc/interrupts
CPU0
7: 161656 INTC TWL4030-PIH
12: 176 INTC DMA
37: 2642 INTC gp timer
56: 585760 INTC i2c_omap
61: 0 INTC i2c_omap
74: 85 INTC serial
77: 11018 INTC ehci_hcd:usb2
83: 144 INTC mmc0
92: 1 INTC musb_hdrc
93: 0 INTC musb_hdrc
378: 0 twl4030 twl4030_usb
379: 0 twl4030 rtc0
384: 0 twl4030 mmc0
Err: 0
r...@beagleboard:~# ls /dev
block rtp11 tty29
... snipped ...
mem rtp30 tty48
mmcblk0 rtp31 tty49
mmcblk0p1 rtp4 tty5
mmcblk0p2 rtp5 tty50
network_latency rtp6 tty51
... snipped ...
r...@beagleboard:~# umount /dev/mmcblk0p1
r...@beagleboard:~# umount /dev/mmcblk0p2
****** I removed the SD card here, no removal msg *****************
r...@beagleboard:~# ls /dev
block rtp11 tty29
... snipped ...
mem rtp30 tty48
mmcblk0 rtp31 tty49
mmcblk0p1 rtp4 tty5
mmcblk0p2 rtp5 tty50
network_latency rtp6 tty51
... snipped ...
r...@beagleboard:~# cat /proc/interrupts
CPU0
7: 1106318 INTC TWL4030-PIH
12: 180 INTC DMA
37: 13933 INTC gp timer
56: 4029606 INTC i2c_omap
61: 0 INTC i2c_omap
74: 440 INTC serial
77: 12416 INTC ehci_hcd:usb2
83: 364 INTC mmc0
92: 1 INTC musb_hdrc
93: 0 INTC musb_hdrc
378: 0 twl4030 twl4030_usb <=== also 0, but not sure if
its meaningful
379: 0 twl4030 rtc0
384: 0 twl4030 mmc0 <===== no Chip Detect irpt
Err: 0
Reinserting the SD card did not result in a message. The SD card file
systems seemed to be in a half mounted state.
I suspect that this bug effects all interrupts received via twl4030
family devices.
Regards,
Bob Feretich
On 7/22/2010 3:14 PM, Gilles Chanteperdrix wrote:
... snipped ...
As I said, the absence of IRQ 378 in 2.6.33 looks like a regression,
which should be easy to find with git bisect. Then when you know the
commit which caused the regression, tell me, I will revert it on 2.6.33,
so that I can reproduce the bug you are facing on my board, and
hopefully what happens with the Adeos patch.
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