[ixp1200] [Q] How do I request a command to another PCI device?

[Scott Karlin]

Yes, it is possible.  The approach depends on which device
is to be the bus master.

If the StrongARM is to be the bus master, it needs to know
the physical bus address of the target location.

If the other device (disk controller) is to be the bus master,
it needs to know the physical bus address of the target memory
on the StrongARM.

In either case, you will need to familiarize yourself with the
PCI bus, the mapping registers on the StrongARM, and the disk
controller device driver.  Unfortunately, there is no set of
functions or a simple recipe I can give for doing this.

Scott


On Thu, Jul 03, 2003 at 01:30:47PM +0900, Cho, joon-woo wrote:
> Hello.
> 
> I installed IXP1200EB on the Linux machine with vera driver.
> 
> And I want to send a command from IXP1200EB to another device.
> 
> (Especially, SCSI controller or IDE HDD for DMA data transfer from there to
> 
> IXP1200 SDRAM unti)
> 
> Is it possible? And if possible, please let me know how I can.
> 
> Thanks.
>