The error message might be due to the wrong/improper configuration of
interrupt and its attributes like whether it is level/edge sensitive.
G.Muruganandam
Hello,
I'm bringing up the Compact Flash interface on a custom board and am
almost there, but not quite. I've seen many messages in the past
about
the 'lost interrupt' message, but I couldn't find anything
corresponding
closely to my situation. Can anyone shed some light?
Here's a snippet of Linux booting:
*******************************
## Booting image at 00200000 ...
Image Name: Linux-2.6.17
Created: 2006-11-29 19:38:51 UTC
Image Type: PowerPC Linux Kernel Image (gzip compressed)
Data Size: 1103335 Bytes = 1.1 MB
Load Address: 00000000
Entry Point: 00000000
Verifying Checksum ... OK
Uncompressing Kernel Image ... OK
Using MPC834x SYS machine description
<snip>
Uniform Multi-Platform E-IDE driver Revision: 7.00alpha2
ide: Assuming 50MHz system bus speed for PIO modes; override with
idebus=xx
hda: TOSHIBA THNCF512MDG, ATA DISK drive
ide0 at 0xd1064000-0xd1064007,0xd106600d on irq 20
hda: max request size: 128KiB
hda: 1000944 sectors (512 MB) w/2KiB Cache, CHS=993/16/63
hda:<4>hda: lost interrupt
hda: lost interrupt
hda: lost interrupt
hda: lost interrupt
hda: lost interrupt
hda1
<snip>
prism login:
*******************************
As you can see, the device is found and eventually the IDE driver
assigns it ID hda1, but something's amiss.
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of a
400MHz MPC8349 processor. I've set the UPM timing according to the
Toshiba app note that's floating around, and the interrupt is tied to
IRQ4 (Interrupt #20). The fact that the driver probe can read
information about the drive tells me that the memory bus is at least
marginally functional. Interrupts are firing:
~ # cat /proc/interrupts
CPU0
9: 127 IPIC Level serial
14: 0 IPIC Level i2c-mpc
15: 0 IPIC Level i2c-mpc
16: 0 IPIC Level mpc83xx_spi
20: 12 IPIC Edge ide0
21: 547 IPIC Edge eth2
BAD: 0
I'm using a driver supplied by Kumar Gala called 'cfide.c'. I've
tried
a couple of quite different CF cards, with the same result on both.
Here's a portion of the kernel .config file:
#
# ATA/ATAPI/MFM/RLL support
#
CONFIG_IDE=y
CONFIG_BLK_DEV_IDE=y
#
# Please see Documentation/ide.txt for help/info on IDE drives
#
# CONFIG_BLK_DEV_IDE_SATA is not set
CONFIG_BLK_DEV_IDEDISK=y
# CONFIG_IDEDISK_MULTI_MODE is not set
# CONFIG_BLK_DEV_IDECD is not set
# CONFIG_BLK_DEV_IDETAPE is not set
# CONFIG_BLK_DEV_IDEFLOPPY is not set
# CONFIG_IDE_TASK_IOCTL is not set
#
# IDE chipset support/bugfixes
#
CONFIG_IDE_GENERIC=y
# CONFIG_IDE_ARM is not set
CONFIG_BLK_DEV_CFIDE=y
# CONFIG_BLK_DEV_IDEDMA is not set
# CONFIG_IDEDMA_AUTO is not set
# CONFIG_BLK_DEV_HD is not set
thanks,
Ben
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1 more quoted lines
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