Messages in this thread | ![/](/images/icornerl.gif) | | Subject | Re: [PATCH 1/3] ata: sata_dwc_460ex: use "dmas" DT property to find dma channel | From | Julian Margetson <> | Date | Mon, 21 Dec 2015 13:20:27 -0400 |
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On 12/21/2015 12:48 PM, Andy Shevchenko wrote: > On Sun, 2015-12-20 at 22:55 +0200, Andy Shevchenko wrote: >> On Sun, Dec 20, 2015 at 10:17 PM, Andy Shevchenko >> <andy.shevchenko@gmail.com> wrote: >>> On Sun, Dec 20, 2015 at 8:49 PM, Måns Rullgård <mans@mansr.com> >>> wrote: >>> I noticed thanks to DWC_PARAMS that burst size is hardcoded to 32 >>> items on this board, however registers for SATA program it to 64. I >>> remember that I got no interrupt when I programmed transfer width >>> wrongly (64 bits against 32 bits) when I ported dw_dmac to be used >>> on >>> Intel SoCs. >> One more thing, I have a patch to monitor DMA IO, we may check what >> exactly the values are written / read in DMA. I can share it >> tomorrow. > As promised the patch I have to debug IO of DW DMA. Didn't check though > if it applies cleanly on top of recent vanilla kernel. > patch -p1 -R <../0001-dw_dmac-debug-dma-controller-IO.patch patching file drivers/dma/dw/core.c Hunk #1 succeeded at 543 (offset -27 lines). Hunk #2 FAILED at 1571. Hunk #3 FAILED at 1717. 2 out of 3 hunks FAILED -- saving rejects to file drivers/dma/dw/core.c.rej patching file drivers/dma/dw/regs.h Hunk #1 succeeded at 114 (offset -16 lines). Hunk #2 succeeded at 262 (offset -39 lines). Hunk #3 succeeded at 293 (offset -40 lines). root@julian-VirtualBox:/usr/src/linux-test# patch -p1 <../0001-dw_dmac-debug-dma-controller-IO.patch patching file drivers/dma/dw/core.c Hunk #1 succeeded at 543 (offset -27 lines). Hunk #2 FAILED at 1572. Hunk #3 FAILED at 1716. 2 out of 3 hunks FAILED -- saving rejects to file drivers/dma/dw/core.c.rej patching file drivers/dma/dw/regs.h Hunk #1 succeeded at 114 (offset -16 lines). Hunk #2 succeeded at 264 (offset -39 lines). Hunk #3 succeeded at 307 (offset -40 lines).
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