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Message-ID: <Z5h0vvL0B5ktd3sM@infradead.org>
Date: Mon, 27 Jan 2025 22:10:06 -0800
From: Christoph Hellwig <hch@...radead.org>
To: Jean-Michel Hautbois <jeanmichel.hautbois@...eli.org>
Cc: Geert Uytterhoeven <geert@...ux-m68k.org>,
Greg Ungerer <gerg@...ux-m68k.org>, linux-m68k@...ts.linux-m68k.org,
linux-kernel@...r.kernel.org
Subject: Re: [PATCH 2/2] arch: m68k: Add DMA mapping operations for Coldfire
M5441x
On Tue, Jan 21, 2025 at 11:54:14AM +0100, Jean-Michel Hautbois wrote:
> Introduce `dma_ops` for the Coldfire M5441x platform, enabling both
> coherent and streaming DMA operations. This addition should fill the gap
> for DMA support integrates with the existing kernel DMA framework.
Arch dma code should not implement DMA OPS, but use the generic
dma-direct code with the right helpes for handling coherency. This
variant looks like it should be using the DMA_COHERENT_POOL allocator
for dma coherent memory.
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