* Re: [MIPS] Import updates from i386's i8259.c
[not found] <S20037871AbWLFUPw/20061206201552Z+14601@ftp.linux-mips.org>
@ 2006-12-07 9:46 ` Christoph Hellwig
2006-12-07 12:33 ` Ralf Baechle
0 siblings, 1 reply; 2+ messages in thread
From: Christoph Hellwig @ 2006-12-07 9:46 UTC (permalink / raw)
To: linux-mips, linux-kernel, mingo
On Wed, Dec 06, 2006 at 08:15:47PM +0000, linux-mips@linux-mips.org wrote:
> Author: Atsushi Nemoto <anemo@mba.ocn.ne.jp> Thu Dec 7 02:04:17 2006 +0900
> Comitter: Ralf Baechle <ralf@linux-mips.org> Wed Dec 6 20:10:54 2006 +0000
> Commit: bf8cfe1360932f191a3ea8d47c773c008ec32cd7
> Gitweb: http://www.linux-mips.org/g/linux/bf8cfe13
> Branch: master
>
> Import many updates from i386's i8259.c, especially genirq transitions.
Shouldn't we try to share i8259.c over the various architectures that
use this controller? With the generic hardirq framework that should be
possible.
^ permalink raw reply [flat|nested] 2+ messages in thread* Re: [MIPS] Import updates from i386's i8259.c
2006-12-07 9:46 ` [MIPS] Import updates from i386's i8259.c Christoph Hellwig
@ 2006-12-07 12:33 ` Ralf Baechle
0 siblings, 0 replies; 2+ messages in thread
From: Ralf Baechle @ 2006-12-07 12:33 UTC (permalink / raw)
To: Christoph Hellwig; +Cc: linux-mips, linux-kernel, mingo
On Thu, Dec 07, 2006 at 10:46:39AM +0100, Christoph Hellwig wrote:
> On Wed, Dec 06, 2006 at 08:15:47PM +0000, linux-mips@linux-mips.org wrote:
> > Author: Atsushi Nemoto <anemo@mba.ocn.ne.jp> Thu Dec 7 02:04:17 2006 +0900
> > Comitter: Ralf Baechle <ralf@linux-mips.org> Wed Dec 6 20:10:54 2006 +0000
> > Commit: bf8cfe1360932f191a3ea8d47c773c008ec32cd7
> > Gitweb: http://www.linux-mips.org/g/linux/bf8cfe13
> > Branch: master
> >
> > Import many updates from i386's i8259.c, especially genirq transitions.
>
> Shouldn't we try to share i8259.c over the various architectures that
> use this controller? With the generic hardirq framework that should be
> possible.
See http://www.linux-mips.org/cgi-bin/mesg.cgi?a=linux-mips&i=20061206203259.GA10170%40linux-mips.org ;-)
The MIPS version of i8259 is already sharable that is all the code that
doesn't immediately deal with the i8259 PIC has been removed. A few
small things will need still need attention. i386 uses this silly
optimization in cached_master_mask / cached_slave_mask that depends on
little endian byte order. i386 programs ICW2 with 0x20 while MIPS uses
I8259A_IRQ_BASE. And the i386 version has various stuff such as the FPU
interrupt handler which are not immediately i8259A-related in i8259.c.
Ralf
^ permalink raw reply [flat|nested] 2+ messages in thread
end of thread, other threads:[~2006-12-07 12:33 UTC | newest]
Thread overview: 2+ messages (download: mbox.gz / follow: Atom feed)
-- links below jump to the message on this page --
[not found] <S20037871AbWLFUPw/20061206201552Z+14601@ftp.linux-mips.org>
2006-12-07 9:46 ` [MIPS] Import updates from i386's i8259.c Christoph Hellwig
2006-12-07 12:33 ` Ralf Baechle
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox
all inboxes | Powered by JetHome®