Re: [ECOS] Block device IO

[Gary Thomas <gary at mlbassoc dot com>]

On Tue, 2003-08-19 at 08:09, Savin Zlobec wrote:
> Hello,
> 
> I've just finished writting the basic block device IO stuff.
> It consists of 3 layers:
> 
> 1. layer just reads and writtes blocks through cyg_io_bread/write (len 
> and pos being in blocks)
> 
> 2. layer does the block caching on top of first one - access is also 
> trough  cyg_io_bread/write (len and pos being in blocks)
> 
> 3. layer does byte access trough cyg_io_bread/write (len and pos being 
> in bytes,
>     block number set/get is done trough cyg_io_set/get_config - you only 
> need
>     to set block numbers if you get over the 32 bit boundary since the 
> block number
>     is adjusted according to the position)
> 
> the layering method used is the same as the one used in serial - tty - 
> termios drivers, so
> they can also be used separatly.
> 
> There are probably some bugs and holes around the code, but if anyone is
> interested in finding bugs, extending or commenting I can post it on
> discuss or better on devel list.
> 

Absolutely, please send it to ecos-devel.  That way, we can all look at
it, see what you're up to, provide feedback, etc.

Thanks.
 
-- 
Gary Thomas <gary@mlbassoc.com>
MLB Associates


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