OpenPIC Specification

OpenPIC Specification

[ZHANG,HAI-TAO (A-China,ex1)]

Hi,

Where can I find the Open Programmable Interrupt Controller (PIC)
Specification? Does anybody know the URL that I can get it? It seems that
the openpci@amd.com does not work now.

thanks in advance,
Haitao


** Sent via the linuxppc-embedded mail list. See http://lists.linuxppc.org/

Re: openpic specification

[Geert Uytterhoeven]

On Fri, 30 May 2003, invictus rm wrote:
> i am unable to download openpic specification from the AMD website due to
> the lack of availability
>
> It would be great if someone can share a copy of openpic specification
> .....Or give a pointer for the same

I've just sent you a copy by personal email.

Gr{oetje,eeting}s,

						Geert

--
Geert Uytterhoeven -- There's lots of Linux beyond ia32 -- geert@linux-m68k.org

In personal conversations with technical people, I call myself a hacker. But
when I'm talking to journalists I just say "programmer" or something like that.
							    -- Linus Torvalds


** Sent via the linuxppc-dev mail list. See http://lists.linuxppc.org/

OpenPIC specification

[James Molloy]

Hi,

I'm a hobbyist OS developer (on my own project, not on linux) and
would like to support interrupt controllers conforming to the OpenPIC
specification. However I can't find the document online - the amd.com
link is dead and a URL mentioned in the LKML archives (on printk.net)
is also 404'd.

I noticed in the LKML archives that the document seems to get passed
around via private emails - would it be at all possible for someone to
kindly email me the spec?

Thank you very much in advance,

James Molloy.


(I'm not subscribed to LKML by the way - I read the archives online
but don't particularly need 300+ messages a day in my inbox so if any
replies/comments could be CC'd to the sending address I'd much
appreciate it.)

Re: OpenPIC specification

[Arnd Bergmann]

On Wednesday 10 September 2008, James Molloy wrote:
> I noticed in the LKML archives that the document seems to get passed
> around via private emails - would it be at all possible for someone to
> kindly email me the spec?
> 

I don't have specs that I can send you, but I can suggest that you
take a look at the arch/powerpc/sysdev/mpic.[ch] code, which implements
it for powerpc. mpic is the most common (only?) implementation of openpic.

	Arnd <><

Re: OpenPIC specification

[Geert Uytterhoeven]

On Wed, 10 Sep 2008, Arnd Bergmann wrote:
> it for powerpc. mpic is the most common (only?) implementation of openpic.

FWIW, the Apply `Hydra' Mac I/O chip also contained an OpenPIC.

Gr{oetje,eeting}s,

						Geert

--
Geert Uytterhoeven -- There's lots of Linux beyond ia32 -- geert@linux-m68k.org

In personal conversations with technical people, I call myself a hacker. But
when I'm talking to journalists I just say "programmer" or something like that.
							    -- Linus Torvalds

Re: openpic specification

[Kumar Gala]

On Jan 16, 2010, at 4:00 AM, gshan wrote:

> I ever searched openpic specification on google for several times, but =
unfortunately nothing found.
> Could anybody point me where I can get the openpic specification?
>=20
> The source code seems being from IBM: arch/powerpc/sysdev/mpic.c

While not the openpic spec if you grab any of the Freescale RM for =
MPC85xx chips there will be a chapter on the PIC that is an "openPIC" =
based interrupt controller.

- k=

openpic specification

[gshan]

I ever searched openpic specification on google for several times, but 
unfortunately nothing found.
Could anybody point me where I can get the openpic specification?

The source code seems being from IBM: arch/powerpc/sysdev/mpic.c

Thanks in advance,
Gavin

RE: openpic specification

[SHAN Gavin]

[-- Attachment #1: Type: text/plain, Size: 995 bytes --]



> I ever searched openpic specification on google for several times, but unfortunately nothing found.
> Could anybody point me where I can get the openpic specification?
> 
> The source code seems being from IBM: arch/powerpc/sysdev/mpic.c

While not the openpic spec if you grab any of the Freescale RM for MPC85xx chips there will be a chapter on the PIC that is an "openPIC" based interrupt controller.

Thanks, Kumar. Actually, I'm facing a wired issue on my system: some times, the interrupt
from external devices can't be seen from CPU. That means the CPU was never disturbed by
extern interrupts at some point. I don't know why, it seems the PIC just ignored the
external interrupts.

We're using Pasemi 1682M part, which integrated a openpic compatible PIC. But the CPU part has 2
cores. There're 3 kinds of interrupts:

several internal interrupts - priority 8
one external interrupt      - priority 8
IPI                         - priority 10

Thanks,
Gavin


[-- Attachment #2: Type: text/html, Size: 1625 bytes --]