On Sun, Dec 20, 2015 at 8:49 PM, Måns Rullgård <mans@xxxxxxxxx> wrote: > Julian Margetson <runaway@xxxxxxxx> writes: >> On 12/20/2015 1:11 PM, Måns Rullgård wrote: >>> Julian Margetson <runaway@xxxxxxxx> writes: >> [ 48.769671] ata3.00: failed command: READ FPDMA QUEUED > > Well, that didn't help. I still think it's part of the problem, but > something else must be wrong as well. The various Master Select fields > look like a good place to start. Master number (which is here would be either 1 or 0) should not affect as long as they are connected to the same AHB bus (I would be surprised if they are not). > Also, the manual says the LLP_SRC_EN > and LLP_DST_EN flags should be cleared on the last in a chain of blocks. > The old sata_dwc driver does this whereas dw_dma does not. Easy to fix, however I can't get how it might affect. > It might be worthwhile to try reverting drivers/ata/sata_dwc_460ex.c to > v4.0 (leaving the rest at 4.4-rc5) just to make sure that's a good > reference. I've verified that this builds. It would be nice. 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. -- With Best Regards, Andy Shevchenko -- To unsubscribe from this list: send the line "unsubscribe linux-ide" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
