Hi,
I am using EP405 board which has the ibm405gp processor. I am using
kernel version 2.4.23-pre5. I used the PC/104 on the EP405 to connect to a
PCI adapter. Then I plug in a USB card in the PCI slot, but I can't seems
to get the kernel to get the interrupt from USB card. But when booting up
the log shows that the PCI and the USB gets the IRQ. I have all the
necessary driver compile in the kernel.
host/usb-ohci.c: USB OHCI at membase 0xc3007000, IRQ 25
host/usb-ohci.c: usb-00:0a.0, NEC Corporation USB
usb.c: new USB bus registered, assigned bus number 1
I have modified the arch/ppc/platform/ep405.c file's ep405_devtable
structure to make the kernel get the irq for the pci. But after I plug in
the USB device into the USB card, the following error appear.
usb_control/bulk_msg: timeout
host/usb-ohci.c: unlink URB timeout
usb.c: USB device not accepting new address=2 (error=-110)
>From the FAQ in Linux-USB it says that it is something wrong with the BIOS.
But since it is an Embedded System, I check with the Board Register for the
EP405 board. But I can't seem to get the right register.
Can anyone help me?
Thank you !
Shih-Ying Chou
The following is the /proc/pci
PCI devices found:
Bus 0, device 10, function 0:
USB Controller: NEC Corporation USB (rev 65).
IRQ 25
Master Capable. Latency=128. Min Gnt=1.Max Lat=42.
Non-prefetchable 32 bit memory at 0xbffff000 [0xbfffffff].
Bus 0, device 10, function 1:
USB Controller: NEC Corporation USB (#2) (rev 65).
IRQ 25
Master Capable. Latency=128. Min Gnt=1.Max Lat=42.
Non-prefetchable 32 bit memory at 0xbfffe000 [0xbfffefff].
Bus 0, device 10, function 2:
USB Controller: NEC Corporation USB 2.0 (rev 2).
IRQ 25
Master Capable. Latency=128. Min Gnt=16.Max Lat=34.
Non-prefetchable 32 bit memory at 0xbfffdf00 [0xbfffdfff].
The following is the /proc/interrupt
CPU0
0: 263 IBM UIC Level serial
9: 0 IBM UIC Level OCP EMAC Wakeup
10: 0 IBM UIC Level MAL SERR
11: 915 IBM UIC Level MAL TX EOB
12: 1891 IBM UIC Level MAL RX EOB
13: 0 IBM UIC Level MAL TX DE
14: 0 IBM UIC Level MAL RX DE
15: 0 IBM UIC Level OCP EMAC MAC
25: 0 IBM UIC Level usb-ohci, usb-ohci
BAD: 0
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