Re: Marvel 88SE6121 driver

[Sergei Shtylyov <sshtylyov@ru.mvista.com>]

Hello.

Mike Zheng wrote:

> From PCI config space, the VENDOR_ID and DEVICE_ID are correct for my
> driver. However the PCI_COMMAND register of 88SE6121 I got is 0x7,
> which is the same as default value. Based on the document,  it has to
> be 0x0207 to enable interrupt. However I always failed to do so, the

    Bit 10 (mask 0x0200) is fast back-to-back enable, what does it have to do 
with iterrupts.

> value remains 0x7 after it is re-assigned to the new value 0x0207. So

    This means that fast back-to-back is not supported

> that I have no interrupt from PCIe as INTA. Do you have any idea on
> this issue?

    There's also bit 11 (mask 0x0400) meaning INTx emulation *disable*.

> Thanks for your help,

> Mike Zheng

MBR, Sergei