[PATCH 2/2] powerpc: Add IPIC MSI support

[Li Tony]

Hi,

I think it is possible to make common code to support both IPIC and MPIC.
Currently, the MPIC has already implemented MSI which is different from IPIC and embedded into the mpic code body.
If want to unifiy MSI code, we need to remove the current MPIC MSI implementation.

Micheal, what is your opinion ??

Jin is working on 86xx msi now. 

Tony


> -----Original Message-----
> From: Kumar Gala [mailto:galak at kernel.crashing.org] 
> Sent: 2007年12月14日 13:45
> To: Li Tony
> Cc: Phillips Kim; michael at ellerman.id.au; linuxppc-dev
> Subject: Re: [PATCH 2/2] powerpc: Add IPIC MSI support
> 
> 
> On Dec 4, 2007, at 4:39 AM, Li Li wrote:
> 
> > Modified based on discussion on list.
> >
> > 1. Adopt virq_to_hw routine
> > 2. Correct a legacy bug
> >
> > Implements the IPIC MSI as two level interrupt controller.
> >
> > Signed-off-by: Tony Li <tony.li at freescale.com>
> 
> Tony, have you looked at the 85xx/86xx PCIe MSI mechanism?  
> The 2nd level PIC handling seems like its pretty similar 
> between IPIC and MPIC.  Would like to see if we could somehow 
> make the code common for to handle MSIs from both?
> 
> - k
>