Messages in this thread |  | | Subject | Re: 2.5 IDE Whitepaper? | From | Alan Cox <> | Date | 22 Aug 2002 00:51:52 +0100 |
| |
On Thu, 2002-08-22 at 00:32, Jeff Garzik wrote: > PAUL BENNETT wrote: > > I am looking for documentation regarding the 2.5 IDE rewrite. For example: > > What are the goals for 2.5. What is the implementation plan? What were the > > problems in 2.4, and how will they be fixed in 2.5, etc? > > <chuckle> I wish :) > > I imagine it will happen like most things happen, Linus describes his > ideas and goals and wishes in a few lkml posts, and eventually something > like it happens :)
I can try, my working list approximates this (ignoring the 2.5 porting/block I/O stuff which is a chapter in itself)
Phase #1 (mostly complete) Merge Andre's current code [DONE] Remove all the bogus code from the PCI drivers [90% DONE] Move all the drivers seperate from the core code [DONE] Migrate the PCI drivers to a registration API and allow insmod Fix bugs arising from the first bits of phase 1
Phase #2 Deal with insmod of a device currently running as legacy Fix up the locking ready to allow rmmod of a pci driver Allow rmmod and hotplug at the controller level
Phase #3 Complete splitting setup-pci functions into smaller bits of code and replace deep magic and callbacks with functions called from each driver. Get all the if device==foo out of the PCI code paths
Phase #4 Do something about the ide_register/unregister end of the world and legacy chipset stuff. The PPC folks may tackle this in advance Get us to the point we can foo = ide_attach(); ide_remove(foo) for arbitary interfaces
And then (when the setup is turned the right way out and not before) begin looking at turning the actual block I/O engine the right way out. (That is driver calls helpers not midlayer and magic)
That should allow us to keep solid stable IDE along the way.
- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
|  |