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Re: [PATCH 0/3] MIPS: Extend plat_* abstractions, cache support

To: Kevin Cernekee <>
Subject: Re: [PATCH 0/3] MIPS: Extend plat_* abstractions, cache support
From: Ralf Baechle <>
Date: Fri, 24 Apr 2009 06:23:10 +0200
In-reply-to: <0483452db22e72f57289e63fcf097120d94c2a37.1240533480.git@localhost>
Original-recipient: rfc822;
References: <0483452db22e72f57289e63fcf097120d94c2a37.1240533480.git@localhost>
User-agent: Mutt/1.5.18 (2008-05-17)
On Thu, Apr 23, 2009 at 05:03:43PM -0700, Kevin Cernekee wrote:

> I am upgrading an SoC to the kernel from an earlier version,
> and in the process I am switching over the old board support
> customizations to use the newer, cleaner plat_* functions.  I found two
> cases where the plat_* functions did not provide enough information,
> so I had to modify the API:
> plat_unmap_dma_mem() - Our handler needs to know the size and direction
> of the DMA mapping.  This information is not encoded in the DMA address,
> so it needed to be passed in explicitly.
> plat_dma_addr_to_phys() - The bus<->physical address mappings differ
> based on which bus is being used.  It is not always possible to infer
> which bus is being used from the bus address alone, so I added a
> "struct device" to the function definition.
> Also, our MIPS core uses 64-byte D$ lines, so I needed to generate the
> corresponding blast* functions.
> These patches apply against the GIT tree.

Queued for 2.6.31.  Thanks Kevin!

Which SoC port are you working on btw?


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