linux-kernel - RE: [PATCH 9/9] RapidIO: Add support for IDT CPS Gen2 switches

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Message-ID: <0CE8B6BE3C4AD74AB97D9D29BD24E552011D6074@CORPEXCH1.na.ads.idt.com>
Date:	Mon, 16 Aug 2010 11:30:39 -0700
From:	"Bounine, Alexandre" <Alexandre.Bounine@....com>
To:	"Micha Nelissen" <micha@...i.hopto.org>
Cc:	<akpm@...ux-foundation.org>, <linux-kernel@...r.kernel.org>,
	<linuxppc-dev@...abs.org>,
	"Bounine, Alexandre" <Alexandre.Bounine@....com>
Subject: RE: [PATCH 9/9] RapidIO: Add support for IDT CPS Gen2 switches

Micha Nelissen wrote:
> 
> Alexandre Bounine wrote:
> > +	rio_mport_write_config_32(mport, destid, hopcount,
> > +				  LOCAL_RTE_CONF_DESTID_SEL, table);
> > +
> > +	for (i = 0x80000000; i <= 0x800000ff;) {
> > +		rio_mport_write_config_32(mport, destid, hopcount,
> > +			RIO_STD_RTE_CONF_DESTID_SEL_CSR, i);
> 
> The 0x80000000 is that an autoincrement bit? If so, it only needs to
do
> this once I think? If so please call it like that, and loop the 'i'
> variable through the destination IDs.

No. This is EXTENDED_CONFIGURATION_ENABLE bit defined in Part 3 of RIO
spec (v.2.1, sect.3.5.4).
Anyway, I should add definition for this bit. Will do now.

Alex.
   
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