Hi Christoph, Jim,
On Wed, Sep 16, 2020 at 8:30 AM Christoph Hellwig wrote:
> From: Jim Quinlan
>
> The new field 'dma_range_map' in struct device is used to facilitate the
> use of single or multiple offsets between mapping regions of cpu addrs and
> dma addrs. It subsumes the role of "dev->dm
On Wed, Sep 16, 2020 at 08:14:59AM +0200, Christoph Hellwig wrote:
> From: Jim Quinlan
>
> The new field 'dma_range_map' in struct device is used to facilitate the
> use of single or multiple offsets between mapping regions of cpu addrs and
> dma addrs. It subsumes the role of "dev->dma_pfn_offs
From: Jim Quinlan
The new field 'dma_range_map' in struct device is used to facilitate the
use of single or multiple offsets between mapping regions of cpu addrs and
dma addrs. It subsumes the role of "dev->dma_pfn_offset" which was only
capable of holding a single uniform offset and had no regi
On Tue, Sep 15, 2020 at 01:55:01PM -0600, Mathieu Poirier wrote:
> That did the trick - the stm32 platform driver's probe() function completes
> and
> the remote processor is operatinal.
>
> That being said the value returned by function dma_to_pfn()
> is 0x137fff in the original code and 0x
On Tue, Sep 15, 2020 at 07:41:22AM +0200, Christoph Hellwig wrote:
> On Mon, Sep 14, 2020 at 05:01:47PM -0600, Mathieu Poirier wrote:
>
> [700 lines of the fullquote deleted..]
>
> > > + for (r = map; r->size; r++)
> > > + num_ranges++;
> > > +
> > > + new_map = kmemdup(map, array_size(nu
On Mon, Sep 14, 2020 at 05:01:47PM -0600, Mathieu Poirier wrote:
[700 lines of the fullquote deleted..]
> > + for (r = map; r->size; r++)
> > + num_ranges++;
> > +
> > + new_map = kmemdup(map, array_size(num_ranges + 1, sizeof(*map)),
> > + GFP_KERNEL);
> > + i
Hi Christoph,
On Mon, Sep 14, 2020 at 09:33:43AM +0200, Christoph Hellwig wrote:
> From: Jim Quinlan
>
> The new field 'dma_range_map' in struct device is used to facilitate the
> use of single or multiple offsets between mapping regions of cpu addrs and
> dma addrs. It subsumes the role of "de
From: Jim Quinlan
The new field 'dma_range_map' in struct device is used to facilitate the
use of single or multiple offsets between mapping regions of cpu addrs and
dma addrs. It subsumes the role of "dev->dma_pfn_offset" which was only
capable of holding a single uniform offset and had no regi
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