> From: Simon Glass
> Date: Wed, 18 Jan 2023 12:42:19 -0700
>
> Hi Mark,
>
> On Tue, 17 Jan 2023 at 15:04, Mark Kettenis wrote:
> >
> > In order to support IOMMUs in non-bypass mode we need device ops
> > to map and unmap DMA memory. The map operation enters a mapping
> > for a region specifie
Hi Mark,
On Tue, 17 Jan 2023 at 15:04, Mark Kettenis wrote:
>
> In order to support IOMMUs in non-bypass mode we need device ops
> to map and unmap DMA memory. The map operation enters a mapping
> for a region specified by CPU address and size into the translation
> table of the IOMMU and return
In order to support IOMMUs in non-bypass mode we need device ops
to map and unmap DMA memory. The map operation enters a mapping
for a region specified by CPU address and size into the translation
table of the IOMMU and returns a DMA address suitable for
programming the device to do DMA. The unma
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