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Date: Thu, 21 Jul 2016 13:37:42 +0100
From: Andrew Turner <andrew@fubar.geek.nz>
To: Michal Meloun <mmel@FreeBSD.org>
Cc: Nathan Whitehorn <nwhitehorn@freebsd.org>, Svatopluk Kraus
 <skra@FreeBSD.org>, src-committers@FreeBSD.org, svn-src-all@FreeBSD.org,
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Subject: Re: svn commit: r301453 - in head/sys: arm/arm arm64/arm64 dev/fdt
 dev/gpio dev/iicbus dev/ofw dev/pci dev/vnic kern mips/mips sys
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On Wed, 20 Jul 2016 13:28:53 +0200
Michal Meloun <mmel@FreeBSD.org> wrote:
> Dne 19.07.2016 v 17:06 Nathan Whitehorn napsal(a):
> > 2. It partially duplicates the functionality of OFW_BUS_MAP_INTR(),
> > but is both problematically more general and less flexible (it has
> > requirements on timing of PIC attachment vs. driver resource
> > allocation)  
> OFW_BUS_MAP_INTR()  can parse only OFW  based data and expect that
> parsed data are magicaly stored within the call.
> The new method, bus_map_intr(),  can parse data from multiple sources 
> (OFW, UEFI / ACPI, synthetic[gpio device + pin number]).  It also
> returns parsed data back to caller.
> And no, it  doesn't  add any additional timing requirements .

I've been looking at ACPI on arm64. So far I have not found the need
for this with ACPI as we don't need to send the data to the interrupt
controller driver to be parsed in the way OFW/FDT needs to.

Andrew