On 2018-10-18 13:50, Gustavo Pimentel wrote: > On 18/10/2018 09:02, Peter Ujfalusi wrote: >> >> >> On 2018-10-17 14:42, Gustavo Pimentel wrote: >>> Hi all, >> >> Fixed up the email addresses.. >> >>> I'm implementing a new DMA driver for an IP and I've used /drivers/dma/dw/* >>> driver has reference. This driver uses DMA engine framework. >>> >>> Now I would like to start testing my new driver by using DMAtest tool, I've >>> follow the instructions written on [1], but I don't get any output from it. >>> I think DMAtest didn't even started... Can you help to track down this? >> >> Do you have support for DMA_MEM_TO_MEM and implementation for the >> device_prep_dma_memcpy callback? >> >> If yes, then add debug to your device_prep_dma_memcpy first to see if it >> goes well, then to your device_issue_pending and device_tx_status callbacks. > > Unfortunately I don't have it. I only have support for DMA_DEV_TO_MEM and > DMA_MEM_TO_DEV. dmatest can only test DMA_MEM_TO_MEM... > > I've activated CONFIG_DYNAMIC_DEBUG flag on kernel and executed the following > command after loading the driver. > > % echo 'file dmatest.c line 1- +pfl' > /sys/kernel/debug/dynamic_debug/control > > But no changes... > >> >>> These were the commands that I execute for the test. >>> >>> % uname -a >>> Linux axs101 4.19.0-rc1 #355 PREEMPT Mon Oct 15 11:56:03 CEST 2018 arc GNU/Linux >>> >>> % ls -1 /sys/class/dma/ >>> dma0chan0 >>> dma0chan1 >>> dma1chan0 >>> dma1chan1 >>> >>> % echo dma0chan0 > /sys/module/dmatest/parameters/channel >>> % echo 1 > /sys/module/dmatest/parameters/iterations >>> % echo 2000 > /sys/module/dmatest/parameters/timeout >>> % echo 1 > /sys/module/dmatest/parameters/verbose >>> % echo 1 > /sys/module/dmatest/parameters/run >>> >>> % cat /sys/module/dmatest/parameters/run >>> % N >>> >>> [1] https://urldefense.proofpoint.com/v2/url?u=https-3A__www.kernel.org_doc_html_v4.15_driver-2Dapi_dmaengine_dmatest.html&d=DwIDaQ&c=DPL6_X_6JkXFx7AXWqB0tg&r=bkWxpLoW-f-E3EdiDCCa0_h0PicsViasSlvIpzZvPxs&m=gwp-v4gqH7sPCj--CT8yfrLkYcQgh7AdlwbxgAGf1F8&s=LGI543wae-yExjwBECCxix-06AUuiHWHly60hBBnFbQ&e= >>> >>> Regards, >>> Gustavo >>> >> >> - Péter >> >> Texas Instruments Finland Oy, Porkkalankatu 22, 00180 Helsinki. >> Y-tunnus/Business ID: 0615521-4. Kotipaikka/Domicile: Helsinki >> > - Péter Texas Instruments Finland Oy, Porkkalankatu 22, 00180 Helsinki. Y-tunnus/Business ID: 0615521-4. Kotipaikka/Domicile: Helsinki
