On Wed, 2006-03-08 at 22:36 +, Adrian Cox wrote:
> On Mon, 2006-03-06 at 14:39 +1030, Phil Nitschke wrote:
> > How is a DMA controlled (from a device driver writer's perspective) when
> > a third-party (i.e. in the bridge) DMA controller needs to do the work
> > to get the data from a PCI Targe
> "BW" == Brian Waite writes:
>> I'm now looking seriously (and reluctantly!) at writing a DMA
>> Controller Driver to supplement these functions, and I've started
>> the process of getting an NDA from Marvell, so I can get their
>> User Manual (and errata!).
BW> You won't get very
On Mon, 2006-03-06 at 14:39 +1030, Phil Nitschke wrote:
> How is a DMA controlled (from a device driver writer's perspective) when
> a third-party (i.e. in the bridge) DMA controller needs to do the work
> to get the data from a PCI Target into main memory?
>
> What kernel API should be provided b
> "MAG" == Mark A Greer writes:
MAG> On Tue, Dec 20, 2005 at 10:49:58AM +1030, Phil Nitschke wrote:
>> ... if I wanted to suck the data into main memory using the mv64460
>> IDMA controller (assuming the device couldn't initiate its own
>> burst writes), is there a standard kernel in
> I'm now looking seriously (and reluctantly!) at writing a DMA Controller
> Driver to supplement these functions, and I've started the process of
> getting an NDA from Marvell, so I can get their User Manual (and errata!).
>
You won't get very far without the user manual, then I think you will fin
> "MAG" == Mark A Greer writes:
MAG> Hi Phil,
MAG> [Note: I'm cc'ing linuxppc-embedded for others to reference and to
MAG> add their thoughts.]
OK, I've just subscribed...
MAG> On Tue, Dec 20, 2005 at 10:49:58AM +1030, Phil Nitschke wrote:
>> Hi Mark,
>>
>> I'm developing a de
>Currently there is a 2M aperture on the device, but it is not being seen
>as "prefetchable", so when I try to get data from the device using
>repetitive reads, they are very slow. Hence my efforts to get DMA
>happening.
>Presumably the CPU/bridge discovers PCI device memory regions during bus
On Tue, Dec 20, 2005 at 09:27:35AM -0500, Brian Waite wrote:
> On Monday 19 December 2005 8:01 pm, Mark A. Greer wrote:
> > >
> > > up the mv64460. One source told me:
> > > > In order to do PCI bursts, you'll need to use a DMA engine. The
> > > > MV64460 does contain a DMA engine, but you'd
On Monday 19 December 2005 8:01 pm, Mark A. Greer wrote:
> >
> > up the mv64460. One source told me:
> > > In order to do PCI bursts, you'll need to use a DMA engine. The
> > > MV64460 does contain a DMA engine, but you'd need to write a driver
> > > to access it.
>
> That is not correct (a
Hi Phil,
[Note: I'm cc'ing linuxppc-embedded for others to reference and to
add their thoughts.]
---
On Tue, Dec 20, 2005 at 10:49:58AM +1030, Phil Nitschke wrote:
> Hi Mark,
>
> I'm developing a device driver to run in the 2.6.10 kernel. I want to
That's a pretty old kernel. Do you have the
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