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

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Message-ID: <3877989d0702080117j6ee666aahbb89ca0098ca38a5@mail.gmail.com>
Date:	Thu, 8 Feb 2007 17:17:40 +0800
From:	"Luming Yu" <luming.yu@...il.com>
To:	"Zhang, Yanmin" <yanmin_zhang@...ux.intel.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

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)
>
>
> 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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>
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