Messages in this thread Patch in this message | | | Subject | Re: use generic DMA mapping code in powerpc V4 | From | Christian Zigotzky <> | Date | Tue, 15 Jan 2019 14:56:34 +0100 |
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On 15 January 2019 at 2:35PM, Christoph Hellwig wrote: > On Tue, Jan 15, 2019 at 11:55:25AM +0100, Christian Zigotzky wrote: >> Next step: 21074ef03c0816ae158721a78cabe9035938dddd (powerpc/dma: use the >> generic direct mapping bypass) >> >> git clone git://git.infradead.org/users/hch/misc.git -b powerpc-dma.6 a >> >> git checkout 21074ef03c0816ae158721a78cabe9035938dddd >> >> I was able to compile the kernel for the AmigaOne X1000 (Nemo board with PA >> Semi PA6T-1682M SoC). It boots but the PA Semi onboard ethernet doesn't >> work. > Thanks. But we are exactly missing the steps that are relevant. I've > pushed a fixed up powerpc-dma.6 tree, which will only change starting from > the first commit that didn't link. > > The first commit that changed from the old one is this one: > > http://git.infradead.org/users/hch/misc.git/commitdiff/257002094bc5935dd63207a380d9698ab81f0775 > > which was that one that your compile failed on first. > > Thanks again for all your work! > Thank you! I tried the commit 240d7ecd7f6fa62e074e8a835e620047954f0b28 (powerpc/dma: use the dma-direct allocator for coherent platforms) again.
git clone git://git.infradead.org/users/hch/misc.git -b powerpc-dma.6 a
git checkout 240d7ecd7f6fa62e074e8a835e620047954f0b28
I modified the 'dma.c' patch because of the undefined references to '__dma_nommu_free_coherent' and '__dma_nommu_alloc_coherent':
---
@@ -163,8 +99,13 @@ static inline void dma_nommu_sync_single(struct device *dev, #endif
const struct dma_map_ops dma_nommu_ops = { + .alloc = dma_direct_alloc, + .free = dma_direct_free, .map_sg = dma_nommu_map_sg, .unmap_sg = dma_nommu_unmap_sg, .dma_supported = dma_direct_supported,
--- The X1000 boots and the PASEMI onboard ethernet works! X5000 (P5020 board): U-Boot loads the kernel and the dtb file. Then the kernel starts but it doesn't find any hard disks (partitions).
-- Christian
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