On Thu, 2019-11-21 at 08:31 +0100, Christoph Hellwig wrote:
> On Tue, Nov 19, 2019 at 05:17:03PM +, Robin Murphy wrote:
> > TBH I can't see it being a massive problem even if the DMA patch, driver
> > and DTS patch went entirely separately via the respective DMA, PCI, and
> > arm-soc trees in
On Tue, Nov 19, 2019 at 05:17:03PM +, Robin Murphy wrote:
> TBH I can't see it being a massive problem even if the DMA patch, driver
> and DTS patch went entirely separately via the respective DMA, PCI, and
> arm-soc trees in the same cycle. Bisecting over a merge window is a big
> enough pa
On 19/11/2019 5:00 pm, Christoph Hellwig wrote:
On Tue, Nov 19, 2019 at 01:57:43PM +0100, Nicolas Saenz Julienne wrote:
Hi Rob & Christoph,
do you mind if I append v2 of this into my upcoming v3 RPi4 PCIe support
series, I didn't do it initially as I thought this was going to be a
contentious pa
On Tue, Nov 19, 2019 at 01:57:43PM +0100, Nicolas Saenz Julienne wrote:
> Hi Rob & Christoph,
> do you mind if I append v2 of this into my upcoming v3 RPi4 PCIe support
> series, I didn't do it initially as I thought this was going to be a
> contentious patch. But as it turned out better than expe
On Wed, 2019-11-13 at 17:13 +0100, Nicolas Saenz Julienne wrote:
> Using a mask to represent bus DMA constraints has a set of limitations.
> The biggest one being it can only hold a power of two (minus one). The
> DMA mapping code is already aware of this and treats dev->bus_dma_mask
> as a limit.
On Wed, 2019-11-13 at 20:34 +, Robin Murphy wrote:
> On 13/11/2019 4:13 pm, Nicolas Saenz Julienne wrote:
> > Using a mask to represent bus DMA constraints has a set of limitations.
> > The biggest one being it can only hold a power of two (minus one). The
> > DMA mapping code is already aware
On Wed, Nov 13, 2019 at 05:13:39PM +0100, Nicolas Saenz Julienne wrote:
> Using a mask to represent bus DMA constraints has a set of limitations.
> The biggest one being it can only hold a power of two (minus one). The
> DMA mapping code is already aware of this and treats dev->bus_dma_mask
> as a
On 2019-11-13 8:41 pm, Florian Fainelli wrote:
On 11/13/19 12:34 PM, Robin Murphy wrote:
On 13/11/2019 4:13 pm, Nicolas Saenz Julienne wrote:
Using a mask to represent bus DMA constraints has a set of limitations.
The biggest one being it can only hold a power of two (minus one). The
DMA mappin
On 11/13/19 12:34 PM, Robin Murphy wrote:
> On 13/11/2019 4:13 pm, Nicolas Saenz Julienne wrote:
>> Using a mask to represent bus DMA constraints has a set of limitations.
>> The biggest one being it can only hold a power of two (minus one). The
>> DMA mapping code is already aware of this and trea
On 13/11/2019 4:13 pm, Nicolas Saenz Julienne wrote:
Using a mask to represent bus DMA constraints has a set of limitations.
The biggest one being it can only hold a power of two (minus one). The
DMA mapping code is already aware of this and treats dev->bus_dma_mask
as a limit. This quirk is alre
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