linux-kernel - Re: [PATCH] ATA convert GSI to irq on ia64

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Message-Id: <1170983248.15989.356.camel@ymzhang>
Date:	Fri, 09 Feb 2007 09:07:28 +0800
From:	"Zhang, Yanmin" <yanmin_zhang@...ux.intel.com>
To:	Luming Yu <luming.yu@...il.com>
Cc:	LKML <linux-kernel@...r.kernel.org>, linux-scsi@...r.kernel.org,
	linux-ide@...r.kernel.org, Jeff Garzik <jgarzik@...ox.com>
Subject: Re: [PATCH] ATA convert GSI to irq on ia64

On Thu, 2007-02-08 at 17:17 +0800, Luming Yu wrote:
> sorry, it should be
> #define ATA_PRIMARY_IRQ(dev)  ide_default_irq(0x1F0)
> 
> On 2/8/07, Luming Yu <luming.yu@...il.com> wrote:
> > if use ide_default_irq , then I guess the #if defined can be removed.
> > #define ATA_PRIMARY_IRQ(dev)   isa_irq_to_vector(0x1F0)
ata driver will replace old ide driver, so I don't use ide codes in
ata driver.

> >
> >
> > On 2/8/07, Zhang, Yanmin <yanmin_zhang@...ux.intel.com> wrote:
> > > If an ATA drive uses legacy mode, ata driver will choose 14 and 15 as the
> > > fixed irq number. On ia64 platform, such numbers are GSI and should be converted
> > > to irq vector.
> > >
> > > Below patch against kernel 2.6.20 fixes it.
> > >
> > > Signed-off-by: Zhang Yanmin <yanmin.zhang@...el.com>
> > >
> > > ---
> > >
> > > diff -Nraup linux-2.6.20/include/asm-generic/libata-portmap.h linux-2.6.20_fix/include/asm-generic/libata-portmap.h
> > > --- linux-2.6.20/include/asm-generic/libata-portmap.h   2007-02-08 15:13:44.000000000 +0800
> > > +++ linux-2.6.20_fix/include/asm-generic/libata-portmap.h       2007-02-08 15:20:13.000000000 +0800
> > > @@ -3,10 +3,20 @@
> > >
> > >  #define ATA_PRIMARY_CMD                0x1F0
> > >  #define ATA_PRIMARY_CTL                0x3F6
> > > +#if defined(__ia64__)
> > > +#define ATA_PRIMARY_IRQ(dev)   isa_irq_to_vector(14)
> > > +#else
> > >  #define ATA_PRIMARY_IRQ(dev)   14
> > > +#endif
> > > +
> > >
> > >  #define ATA_SECONDARY_CMD      0x170
> > >  #define ATA_SECONDARY_CTL      0x376
> > > +#if defined(__ia64__)
> > > +#define ATA_SECONDARY_IRQ(dev) isa_irq_to_vector(15)
> > > +#else
> > >  #define ATA_SECONDARY_IRQ(dev) 15
> > > +#endif
> > > +
> > >
> > >  #endif
-
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