Re: use generic DMA mapping code in powerpc V4

[Christian Zigotzky]

On 13 December 2018 at 2:34PM, Christian Zigotzky wrote:
> On 13 December 2018 at 12:25PM, Christoph Hellwig wrote:
> > On Thu, Dec 13, 2018 at 12:19:26PM +0100, Christian Zigotzky wrote:
> > > I tried it again but I get the following error message:
> > >
> > > MODPOST vmlinux.o
> > > arch/powerpc/kernel/dma-iommu.o: In function 
> > > `.dma_iommu_get_required_mask':
> > > (.text+0x274): undefined reference to `.dma_direct_get_required_mask'
> > > make: *** [vmlinux] Error 1
> > Sorry, you need this one liner before all the patches posted last time:
> >
> > diff --git a/arch/powerpc/Kconfig b/arch/powerpc/Kconfig
> > index d8819e3a1eb1..7e78c2798f2f 100644
> > --- a/arch/powerpc/Kconfig
> > +++ b/arch/powerpc/Kconfig
> > @@ -154,6 +154,7 @@ config PPC
> > ÂÂÂÂÂ select CLONE_BACKWARDS
> > ÂÂÂÂÂ select DCACHE_WORD_ACCESSÂÂÂÂÂÂÂ if PPC64 && CPU_LITTLE_ENDIAN
> > ÂÂÂÂÂ select DYNAMIC_FTRACEÂÂÂÂÂÂÂÂÂÂÂ if FUNCTION_TRACER
> > +ÂÂÂ select DMA_DIRECT_OPS
> > ÂÂÂÂÂ select EDAC_ATOMIC_SCRUB
> > ÂÂÂÂÂ select EDAC_SUPPORT
> > ÂÂÂÂÂ select GENERIC_ATOMIC64ÂÂÂÂÂÂÂÂÂÂÂ if PPC32
> Thanks. Result: PASEMI onboard ethernet works and the X5000 (P5020 
> board) boots with the patch '0001-get_required_mask.patch'.
>
> -- Christian
Next patch: '0002-swiotlb-dma_supported.patch' for the last good commit 
(977706f9755d2d697aa6f45b4f9f0e07516efeda).

The PASEMI onboard ethernet works and the X5000 (P5020 board) boots.

-- Christian