[dpdk-dev] vf init issue with patch igb_uio: issue FLR during open and release of device file
Shijith Thotton
shijith.thotton at caviumnetworks.com
Wed Sep 13 12:48:41 CEST 2017
On Wed, Sep 13, 2017 at 07:51:30AM +0000, Yang, Qiming wrote:
> Hi, Shijith
>
>
>
> VF init error will happen after apply your patch, error log as below. If
> revert your commit, all things work well. And this issue is not only occur
> in i40 VF but also ixgbe.
>
> Could you help to check it soon?
>
>
>
> [root at localhost app]# ./testpmd -c 7 -n 4 -- -i
>
> EAL: Detected 10 lcore(s)
>
> EAL: No free hugepages reported in hugepages-1048576kB
>
> EAL: Probing VFIO support...
>
> EAL: WARNING: cpu flags constant_tsc=yes nonstop_tsc=no -> using
> unreliable clock cycles !
>
> EAL: PCI device 0000:00:03.0 on NUMA socket -1
>
> EAL: Invalid NUMA socket, default to 0
>
> EAL: probe driver: 8086:154c net_i40e_vf
>
> i40evf_init_vf(): init_adminq failed: -53
>
> i40evf_dev_init(): Init vf failed
>
> EAL: Requested device 0000:00:03.0 cannot be used
>
>
>
> commit b58eedfc7dd57eef6d12e2c654a52c834f36084a
> Author: Shijith Thotton <shijith.thotton at caviumnetworks.com>
> Date: Fri Jul 7 16:43:51 2017 +0530
>
> igb_uio: issue FLR during open and release of device file
>
> Set UIO info device file operations open and release. Call pci reset
> function inside open and release to clear device state at start and end.
> Copied this behaviour from vfio_pci kernel module code. With this patch,
> it is not mandatory to issue FLR by PMD's during init and close.
>
> Bus master enable and disable are added in open and release respectively
> to take care of device DMA.
>
> Signed-off-by: Shijith Thotton <shijith.thotton at caviumnetworks.com>
> Reviewed-by: Jianfeng Tan <jianfeng.tan at intel.com>
> Acked-by: Ferruh Yigit <ferruh.yigit at intel.com>
> Acked-by: Gregory Etelson <gregory at weka.io>
>
>
>
> Best Regard,
>
> Yang Qiming
>
>
Hi Yang Qiming,
We didn't face this issue while preparing patch. I think, Gregory tested
it for Intel NICs. Adding more people to the loop for help.
Shijith
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