[PATCH] Adding ADMA support for PPC460EX DMA engine.
sr at denx.de
Fri Jul 23 16:15:14 EST 2010
On Friday 23 July 2010 02:57:18 tmarri at amcc.com wrote:
> From: Tirumala Marri <tmarri at amcc.com>
> This patch will add ADMA support for DMA engine and HW offload for
> XOR/ADG (RAID-5/6) functionalities.
> 1. It supports memcpy, xor, GF(2) based RAID-6.
> 2. It supports interrupt based DMA completions.
> 3. Also supports memcpy in RAID-1 case.
> Kernel version: 2.6.35-rc5
> Created RAID-5/6 arrays usign mdadm.
> And ran raw IO and filesystem IO to the RAID array.
> Chunk size 4k,64k was tested.
> RAID rebuild , disk fail, resync tested.
> File names:
> This code is similar to ppc440spe . So I named the files as
> drivers/dma/ppc4xx/adma1.c and drivers/dma/ppc4xx/adma1.h
As you describe above, a lot of the code seems to be copied from
drivers/dma/ppc4xx/adma.c/h. Wouldn't it make more sense to factor out the
common code instead of duplicating it?
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