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Re: ZONE_DMA on MIPS

To: Atsushi Nemoto <anemo@mba.ocn.ne.jp>
Subject: Re: ZONE_DMA on MIPS
From: Sergei Shtylyov <sshtylyov@ru.mvista.com>
Date: Mon, 19 Mar 2007 18:32:33 +0300
Cc: linux-mips@linux-mips.org
In-reply-to: <20070320.000947.88474417.anemo@mba.ocn.ne.jp>
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Hello.

Atsushi Nemoto wrote:
Some ZONE_DMA patches were merged in 2.6.21.  On most MIPS, ZONE_DMA
is not needed, isn't it?

Currently JAZZ, MALTA, QEMU, IP22, SNI_RM, RBTX4938 defines
GENERIC_ISA_DMA so they may need ZONE_DMA (though I wonder QEMU or
RBTX4938 really need it...)

Erm, concertning the latter -- probably not, as I'm not seeing other FPCIB0 backplane support in the source.

Are there any other platforms requires special DMA zone?

Erm, RBHMA4[24]00 have 8259 on the backplane... And the NEC boards with the Rockhopper backplane as well...

---
Atsushi Nemoto

WBR, Sergei

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