Re: use generic DMA mapping code in powerpc V4

[Christian Zigotzky]

Next step: 240d7ecd7f6fa62e074e8a835e620047954f0b28 (powerpc/dma: use 
the dma-direct allocator for coherent platforms)

git clone git://git.infradead.org/users/hch/misc.git -b powerpc-dma.6 a

git checkout 240d7ecd7f6fa62e074e8a835e620047954f0b28

Link to the Git: 
http://git.infradead.org/users/hch/misc.git/shortlog/refs/heads/powerpc-dma.6

env LANG=C make CROSS_COMPILE=powerpc-linux-gnu- ARCH=powerpc zImage

Error message:

arch/powerpc/kernel/dma.o:(.data.rel.ro+0x0): undefined reference to 
`__dma_nommu_alloc_coherent'
arch/powerpc/kernel/dma.o:(.data.rel.ro+0x8): undefined reference to 
`__dma_nommu_free_coherent'
Makefile:1027: recipe for target 'vmlinux' failed
make: *** [vmlinux] Error 1

-- Christian


On 12 January 2019 at 7:14PM, Christian Zigotzky wrote:
> Next step: 4558b6e1ddf3dcf5a86d6a5d16c2ac1600c7df39 (swiotlb: remove 
> swiotlb_dma_supported)
>
> git clone git://git.infradead.org/users/hch/misc.git -b powerpc-dma.6 a
>
> git checkout 4558b6e1ddf3dcf5a86d6a5d16c2ac1600c7df39
>
> Output:
>
> You are in 'detached HEAD' state. You can look around, make experimental
> changes and commit them, and you can discard any commits you make in this
> state without impacting any branches by performing another checkout.
>
> If you want to create a new branch to retain commits you create, you may
> do so (now or later) by using -b with the checkout command again. 
> Example:
>
> Â git checkout -b <new-branch-name>
>
> HEAD is now at 4558b6e... swiotlb: remove swiotlb_dma_supported
>
> ----
>
> Link to the Git: 
> http://git.infradead.org/users/hch/misc.git/shortlog/refs/heads/powerpc-dma.6
>
> Results: PASEMI onboard ethernet (X1000) works and the X5000 (P5020 
> board) boots. I also successfully tested sound, hardware 3D 
> acceleration, Bluetooth, network, booting with a label etc. The 
> uImages work also in a virtual e5500 quad-core QEMU machine.
>
> -- Christian
>
>
> On 11 January 2019 at 03:10AM, Christian Zigotzky wrote:
> > Next step: 891dcc1072f1fa27a83da920d88daff6ca08fc02 (powerpc/dma: 
> > remove dma_nommu_dma_supported)
> >
> > git clone git://git.infradead.org/users/hch/misc.git -b powerpc-dma.6 a
> >
> > git checkout 891dcc1072f1fa27a83da920d88daff6ca08fc02
> >
> > Output:
> >
> > Note: checking out '891dcc1072f1fa27a83da920d88daff6ca08fc02'.
> >
> > You are in 'detached HEAD' state. You can look around, make experimental
> > changes and commit them, and you can discard any commits you make in 
> > this
> > state without impacting any branches by performing another checkout.
> >
> > If you want to create a new branch to retain commits you create, you may
> > do so (now or later) by using -b with the checkout command again. 
> > Example:
> >
> > git checkout -b <new-branch-name>
> >
> > HEAD is now at 891dcc1... powerpc/dma: remove dma_nommu_dma_supported
> >
> > ---
> >
> > Link to the Git: 
> > http://git.infradead.org/users/hch/misc.git/shortlog/refs/heads/powerpc-dma.6
> >
> > Results: PASEMI onboard ethernet works and the X5000 (P5020 board) 
> > boots. I also successfully tested sound, hardware 3D acceleration, 
> > Bluetooth, network, booting with a label etc. The uImages work also 
> > in a virtual e5500 quad-core QEMU machine.
> >
> > -- Christian
> >
> >
> > On 09 January 2019 at 10:31AM, Christian Zigotzky wrote:
> > > Next step: a64e18ba191ba9102fb174f27d707485ffd9389c (powerpc/dma: 
> > > remove dma_nommu_get_required_mask)
> > >
> > > git clone git://git.infradead.org/users/hch/misc.git -b powerpc-dma.6 a
> > >
> > > git checkout a64e18ba191ba9102fb174f27d707485ffd9389c
> > >
> > > Link to the Git: 
> > > http://git.infradead.org/users/hch/misc.git/shortlog/refs/heads/powerpc-dma.6
> > >
> > > Results: PASEMI onboard ethernet works and the X5000 (P5020 board) 
> > > boots. I also successfully tested sound, hardware 3D acceleration, 
> > > Bluetooth, network, booting with a label etc. The uImages work also 
> > > in a virtual e5500 quad-core QEMU machine.
> > >
> > > -- Christian
> > >
> > >
> > > On 05 January 2019 at 5:03PM, Christian Zigotzky wrote:
> > > > Next step: c446404b041130fbd9d1772d184f24715cf2362f (powerpc/dma: 
> > > > remove dma_nommu_mmap_coherent)
> > > >
> > > > git clone git://git.infradead.org/users/hch/misc.git -b 
> > > > powerpc-dma.6 a
> > > >
> > > > git checkout c446404b041130fbd9d1772d184f24715cf2362f
> > > >
> > > > Output:
> > > >
> > > > Note: checking out 'c446404b041130fbd9d1772d184f24715cf2362f'.
> > > >
> > > > You are in 'detached HEAD' state. You can look around, make 
> > > > experimental
> > > > changes and commit them, and you can discard any commits you make 
> > > > in this
> > > > state without impacting any branches by performing another checkout.
> > > >
> > > > If you want to create a new branch to retain commits you create, 
> > > > you may
> > > > do so (now or later) by using -b with the checkout command again. 
> > > > Example:
> > > >
> > > > Â git checkout -b <new-branch-name>
> > > >
> > > > HEAD is now at c446404... powerpc/dma: remove dma_nommu_mmap_coherent
> > > >
> > > > -----
> > > >
> > > > Link to the Git: 
> > > > http://git.infradead.org/users/hch/misc.git/shortlog/refs/heads/powerpc-dma.6
> > > >
> > > > Result: PASEMI onboard ethernet works and the X5000 (P5020 board) 
> > > > boots.
> > > >
> > > > -- Christian