Modular ata chipsets data

[Søren Schmidt]

On 8Oct, 2008, at 23:43 , John Baldwin wrote:

> On Saturday 04 October 2008 02:31:35 pm Søren Schmidt wrote:
>> I found the devel tree with a modulerized ATA subsystem in it, and
>> just upgraded it to the latest greatest from -current.
>> It can be found on http://deepcore.dk/pub/ATA as two files, ata-
>> modules-diff that contains a diff for /sys/conf/files and ata-
>> modules.tgz that is a replacement for /sys/dev/ata.
>> This turns the chipset parts into a module for each vendor, and they
>> are all compiled in as is, however they can be left out on a pr  
>> vendor
>> basis (there are a few interdependencies though).
>> I havn't written all the /sys/modules/ata/*/Makefiles that it would
>> take to make it into loadable modules, but thats trivial todo.
>>
>> Now what I'd like to find good generic solutions to is:
>>
>> How to select the proper modules at config/compile time without
>> drowning in "option ATA_BLA_BLA" in the config.
>
> What happens with mii is that you have a choice, you can either use  
> 'device
> miibus' in which case you get all of the various drivers and the
> infrastructure, or you can use 'dvice mii', 'device rlphy', etc. if  
> you wish
> to take a more fine-grained approach.  Similarly, there is a  
> miibus.ko that
> just depends on all the sub-drivers so you can still do 'kldload  
> miibus.ko'
> to load all of them.  I think this is probably a fine model as it  
> will still
> load everything by default, but people who care about the space  
> savings can
> trim things down as desired.

Yep, I thought about that one too and I like the idea. I'm close to  
having it all sorted out and ready to commit, just need to polish  
things up a bit. I should make no functional changes just restructure  
chipset code into seperate files.

-Søren