Hi,
Where you fund the communication between PF and VF is by writing its BAR?
http://lxr.free-electrons.com/source/drivers/net/ethernet/mellanox/mlx4/cmd.c#L1964
Best Regards,
Bob
On Fri, Aug 29, 2014 at 9:51 AM, Wei Yang weiy...@linux.vnet.ibm.com wrote:
On Thu, Aug 28, 2014 at 10:58:50PM +0530, Bob Biloxi wrote:
Hi All,
I really appreciate this wonderful community which has immensely
helped me broaden my knowledge and understanding.
I was going through the mlx4 sriov code, trying to understand the
communication between the VF driver and the PF driver.
I was having a few queries..hoping to get a better understanding.
As I understand, the commands are communicated between VF and PF
through a mechanism called communication channel. VF writes to
specific address in its BAR space, PF gets an event and then proceeds
ahead to read the command from its BAR space and then complete the
execution of it..
Now, my query is, lets say the VF driver is not yet present and only
the PF driver is there...
In this case, can we simulate a VF command write and get notified
through an event?
Hi,
I am not that familiar with mlx4 driver. As you mentioned in previous, VF
communicate with PF by writing some word in BAR and PF gets it. If this is
true, I believe it would works.
For eg. we write to some offset in the PF BAR space itself upon
completion of which, an event is generated because of the write? kind
of like loopback mechanism.
I searched through the code but couldn't find anywhere.
Can anyone please help me understand if this is possible? And if there
is any location in the code where i can find this?
Where you fund the communication between PF and VF is by writing its BAR?
Thanks a lot in advance!!
Best Regards,
Bob
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Richard Yang
Help you, Help me
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