libATA PATA status report, new patch

libATA PATA status report, new patch

[Alan Cox]

Main changes this time
- Initial driver code for PCMCIA
- Initial driver code for ISAPnP
- Legacy support including VLB driver bits (mostly to test non PCI
cases)
- Replace IRQ masking awareness in core with a ->data_xfer method
- Use ->data_xfer to move IRQ masking, VLB sync and other chip 
  whackiness back *outside* of the core libata code.
- Simplex DMA is now supported
- Remove PCI quirk junk for IDE stuff (its buggy in places and a mess)
- Teach core PCI code about the IDE legacy mess in the PCI spec
- Merge with other libata changes to 2.6.16-rc2
- ARTOP driver now knows how to init Macintosh cards
- Initial netcell driver bits
- CMD64x support (except 640)
- Initial incomplete Cypress Alpha IDE


With the exception of HPA and serialize support its now pretty close to
a straight replacement for drivers/ide on x86 systems (and boxes using
PCI devices only). There is other stuff that wants improving still like
error recovery on CRC, but its getting close.

Please remember that functionality equivalence, and much cleaner code
doesn't mean less bugs yet, there is a *lot* of testing and hammering on
the code needed before it is production ready for switching.

	http://zeniv.linux.org.uk/~alan/IDE

for 2.6.16-rc2 patches.

Alan

Re: libATA PATA status report, new patch

[Kyle Moffett]

On Feb 06, 2006, at 11:46, Alan Cox wrote:
> With the exception of HPA and serialize support its now pretty  
> close to a straight replacement for drivers/ide on x86 systems (and  
> boxes using PCI devices only). There is other stuff that wants  
> improving still like error recovery on CRC, but its getting close.
>
> Please remember that functionality equivalence, and much cleaner  
> code doesn't mean less bugs yet, there is a *lot* of testing and  
> hammering on the code needed before it is production ready for  
> switching.

 From looking at your status file, I can't tell if you've implemented  
the PowerMac IDE support yet (Based on your email's mention of x86- 
only, I'm guessing not).  If/when you do get that support done, I'd  
be more than happy to test it for you on my PPC boxen.  Overall this  
work looks very nice, thanks!

Cheers,
Kyle Moffett

--
There are two ways of constructing a software design. One way is to  
make it so simple that there are obviously no deficiencies. And the  
other way is to make it so complicated that there are no obvious  
deficiencies.  The first method is far more difficult.
   -- C.A.R. Hoare

Re: libATA PATA status report, new patch

[Wakko Warner]

Alan Cox wrote:
> With the exception of HPA and serialize support its now pretty close to
> a straight replacement for drivers/ide on x86 systems (and boxes using
> PCI devices only). There is other stuff that wants improving still like
> error recovery on CRC, but its getting close.
> 
> Please remember that functionality equivalence, and much cleaner code
> doesn't mean less bugs yet, there is a *lot* of testing and hammering on
> the code needed before it is production ready for switching.
> 
> 	http://zeniv.linux.org.uk/~alan/IDE
> 
> for 2.6.16-rc2 patches.

I wanted to try this today on 2.6.17 but there is no patch for that version
and the patch for 2.6.17-rc4 doesn't apply cleanly.  Do you have a newer
patch for this or do I just need to use the ole shoe horn?

-- 
 Lab tests show that use of micro$oft causes cancer in lab animals
 Got Gas???

Re: libATA PATA status report, new patch

[Alan Cox]

Ar Gwe, 2006-07-07 am 12:29 -0400, ysgrifennodd Wakko Warner:
> I wanted to try this today on 2.6.17 but there is no patch for that version
> and the patch for 2.6.17-rc4 doesn't apply cleanly.  Do you have a newer
> patch for this or do I just need to use the ole shoe horn?

There is a 2.6.17 patch on there. The -mm tree libata is currently more up to date

Alan