Re: [RFC][DOC] writing IDE driver guidelines

From: Jeff Garzik
Date: Sat May 15 2004 - 12:36:19 EST

On Sat, May 15, 2004 at 07:23:50PM +0200, Bartlomiej Zolnierkiewicz wrote:
> - do not believe in popular myth that driver code
> can be of less quality than core kernel code

chuckle :)

> - don't copy without thinking ugly and bogus code
> (there is still lot of such in IDE)

Agreed, but I think most driver authors will not know what is ugly
and bogus code, otherwise they would probably not copy it... (I hope!)

> - host drivers should request/release IO resource
> themelves and set hwif->mmio to 2

Don't you mean, hwif->mmio==2 for MMIO hardware?

> - ide_init_hwif_ports() is obsolete and dying,
> define IDE_ARCH_NO_OBSOLETE_INIT in <asm/ide.h>

hmmmm. Please consider reversing this:

Make ide_init_hwif_ports() present _only_ if IDE_ARCH_OBSOLETE_INIT
is defined.

Then add that define for all arches that still use ide_init_hwif_ports().

> - define ide_default_irq(), ide_init_default_irq()
> and ide_default_io_base() to (0)

Maybe provide generic definitions, so that new arches don't even
have to care about this?


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