On 08/09/16 15:08, Jon Hunter wrote: > > On 06/09/16 19:42, Nicolin Chen wrote: >> ADMA supports non-flow controlled Memory-to-Memory direction >> transactions. So this patch just adds an initial support for >> that. It passed a simple dmatest: >> echo dma1chan0 > /sys/module/dmatest/parameters/channel >> echo 1024 > /sys/module/dmatest/parameters/iterations >> echo 0 > /sys/module/dmatest/parameters/dmatest >> echo 1 > /sys/module/dmatest/parameters/run >> dmesg | grep dmatest >> Started 1 threads using dma1chan0 >> dma1chan0-copy0: summary 1024 tests, 0 failures 2054 iops 16520 KB/s (0) > > What board and kernel did you try this on? > > I have tried this on a tegra210-jetson-tx1 and I get : > > [ 202.569204] dmatest: Started 1 threads using dma1chan0 > [ 205.620318] dmatest: dma1chan0-copy0: result #1: 'test timed out' with src_off=0x86c dst_off=0xc80 len=0x307c (0) > [ 208.692315] dmatest: dma1chan0-copy0: result #2: 'test timed out' with src_off=0x3288 dst_off=0x2720 len=0xa1c (0) > [ 211.764323] dmatest: dma1chan0-copy0: result #3: 'test timed out' with src_off=0x2f44 dst_off=0x3164 len=0x3a4 (0) > [ 214.836309] dmatest: dma1chan0-copy0: result #4: 'test timed out' with src_off=0x17d0 dst_off=0x2b10 len=0xe2c (0) > [ 217.908305] dmatest: dma1chan0-copy0: result #5: 'test timed out' with src_off=0x23d8 dst_off=0xe90 len=0xb7c (0) > ... > > I also tried a tegra210-smaug and I get: > > [ 167.508828] dmatest: Started 1 threads using dma1chan0 > [ 167.508870] dmatest: dma1chan0-copy0: dstbuf[0x0] not copied! Expected db, got 09 > [ 167.508873] dmatest: dma1chan0-copy0: dstbuf[0x1] not copied! Expected da, got 05 > [ 167.508875] dmatest: dma1chan0-copy0: dstbuf[0x2] not copied! Expected d9, got 26 > [ 167.508876] dmatest: dma1chan0-copy0: dstbuf[0x3] not copied! Expected d8, got 16 > ... I tried this again on my audio testing branch for tegra210 and it worked ... [ 36.427210] dmatest: Started 1 threads using dma1chan0 [ 37.036948] dmatest: dma1chan0-copy0: summary 1024 tests, 0 failures 2410 iops 19419 KB/s (0) Do you have other patches in your branch? If so it would be good to understand the dependency. May be we are missing a clock somewhere? Cheers Jon -- nvpublic -- To unsubscribe from this list: send the line "unsubscribe linux-tegra" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
