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Altera_Forum's avatar
Altera_Forum
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12 years ago

Driver trouble on CentOS 6.5

I'm trying to set up a node for OpenCL on FPGA development. I accidentally had my CentOS 6.4 update to 6.5 with 2.6.32-431.5.1.el6.x86_64 and the driver does not seem to work. When I run ./user in /hld/linux64/driver I get the following message:

using /dev/de40

couldn't open the device. did you load the driver?

The driver is loaded (I think? I checked using lsmod), but ./user keeps giving me that message. I also checked and /dev/de40 exists when I try to query the FPGA.

dmesg gives me the following when I manually unload/load the driver: 

aclpci_drv: module license 'unspecified' taints kernel.
Disabling lock debugging due to kernel taint
aclpci_init (666): 
----------------------------
aclpci_init (667): 
Driver version: 13.1.3.
aclpci_init (682): 
pci_register_driver
aclpci_init (688): 
success

I'm using a terasic DE5-NET board. Any help in solving this would be appreciated. Thanks!

5 Replies

  • Altera_Forum's avatar
    Altera_Forum
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    12 years ago

    This is very strange, I'm getting an errno=6 (no such device or address) when I try to open /dev/de40, but I clearly see it. Am I missing something here?

  • Altera_Forum's avatar
    Altera_Forum
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    12 years ago

    Can you see your board as a PCIe device with /sbin/lspci? Maybe the board did not come up properly or has no FPGA image.

  • Altera_Forum's avatar
    Altera_Forum
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    12 years ago

    Can you confirm the exact version of the SDK you're using? 13.1? Which build?

    Have you tried removing the driver and reinstalling it?
  • Altera_Forum's avatar
    Altera_Forum
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    12 years ago

    I was trying to use 13.1.3.178. Did a fresh install of 13.1.3.162 and everything is working perfectly now. Must have botched the patch somehow :/

    Thanks for all of your help!
  • Altera_Forum's avatar
    Altera_Forum
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    12 years ago

    That's great news. Also good to hear the driver works with CentOS 6.5. If you have any further issues please feel free to comment/post on the forum here so that others may benefit. Thanks.