On SoC SATA controller driver implementation!!!

On SoC SATA controller driver implementation!!!

[Murali N]

Hi All,

I am implementing  a SATA driver for my SATA controller which is part of SoC.
I had seen a generic AHCI controller driver in .35 (ahci_platform.c)
which is used by SATA controllers part of the SoC and interacting to
local bus.

My doubts is:
1. Can i make use of above framework to implement my own controller
driver? I know that i have to take care of the "init", "exit" and
power management routines specific to my controller. Will this work?
OR do i need to take care of any other additional considerations while
implementing?

I would like to see a reference drivers code which uses the platform
AHCI controller driver(ahci_platform.c). Can anyone point me to the
sources.
My aim is to leverage already existing code as much as possible to
make my controller works better.

Please provide me any suggestions.

--
Regards,
Murali N

Re: On SoC SATA controller driver implementation!!!

[Jeff Garzik]

On 09/17/2010 05:54 AM, Murali N wrote:
> Hi All,
>
> I am implementing  a SATA driver for my SATA controller which is part of SoC.
> I had seen a generic AHCI controller driver in .35 (ahci_platform.c)
> which is used by SATA controllers part of the SoC and interacting to
> local bus.
>
> My doubts is:
> 1. Can i make use of above framework to implement my own controller
> driver? I know that i have to take care of the "init", "exit" and
> power management routines specific to my controller. Will this work?
> OR do i need to take care of any other additional considerations while
> implementing?

ahci_platform is not a framework, it is an AHCI driver, which uses the 
libata and libahci frameworks.

"will it work?" depends entirely on your controller's programming interface.


> I would like to see a reference drivers code which uses the platform
> AHCI controller driver(ahci_platform.c). Can anyone point me to the
> sources.
> My aim is to leverage already existing code as much as possible to
> make my controller works better.

ahci_platform.c and ahci.c use libahci.c framework.

Both use libata framework.

	Jeff