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2019-11-02dmaengine: fsl-qdma: Handle invalid qdma-queue0 IRQKrzysztof Kozlowski1-0/+3
platform_get_irq_byname() might return -errno which later would be cast to an unsigned int and used in IRQ handling code leading to usage of wrong ID and errors about wrong irq_base. Signed-off-by: Krzysztof Kozlowski <krzk@kernel.org> Reviewed-by: Peng Ma <peng.ma@nxp.com> Tested-by: Peng Ma <peng.ma@nxp.com> Link: https://lore.kernel.org/r/20191004150826.6656-1-krzk@kernel.org Signed-off-by: Vinod Koul <vkoul@kernel.org>
2019-10-23dmaengine: fsl-dpaa2-qdma: export the symbolsPeng Ma1-0/+12
The symbols were not exported leading to error: WARNING: modpost: missing MODULE_LICENSE() in drivers/dma/fsl-dpaa2-qdma/dpdmai.o see include/linux/module.h for more information GZIP arch/arm64/boot/Image.gz ERROR: "dpdmai_enable" [drivers/dma/fsl-dpaa2-qdma/dpaa2-qdma.ko] undefined! ERROR: "dpdmai_set_rx_queue" [drivers/dma/fsl-dpaa2-qdma/dpaa2-qdma.ko] undefined! ERROR: "dpdmai_get_tx_queue" [drivers/dma/fsl-dpaa2-qdma/dpaa2-qdma.ko] undefined! ERROR: "dpdmai_get_rx_queue" [drivers/dma/fsl-dpaa2-qdma/dpaa2-qdma.ko] undefined! ERROR: "dpdmai_get_attributes" [drivers/dma/fsl-dpaa2-qdma/dpaa2-qdma.ko] undefined! ERROR: "dpdmai_open" [drivers/dma/fsl-dpaa2-qdma/dpaa2-qdma.ko] undefined! ERROR: "dpdmai_close" [drivers/dma/fsl-dpaa2-qdma/dpaa2-qdma.ko] undefined! ERROR: "dpdmai_disable" [drivers/dma/fsl-dpaa2-qdma/dpaa2-qdma.ko] undefined! ERROR: "dpdmai_reset" [drivers/dma/fsl-dpaa2-qdma/dpaa2-qdma.ko] undefined! WARNING: "HYPERVISOR_platform_op" [vmlinux] is a static EXPORT_SYMBOL_GPL make[2]: *** [__modpost] Error 1 make[1]: *** [modules] Error 2 make[1]: *** Waiting for unfinished jobs.... make: *** [sub-make] Error 2 So export it. Signed-off-by: Peng Ma <peng.ma@nxp.com> Reported-by: Anders Roxell <anders.roxell@linaro.org> Link: https://lore.kernel.org/r/20191023045617.22764-1-peng.ma@nxp.com Signed-off-by: Vinod Koul <vkoul@kernel.org>
2019-10-20dmaengine: xilinx_dma: Clear desc_pendingcount in xilinx_dma_resetNicholas Graumann1-0/+1
Whenever we reset the channel, we need to clear desc_pendingcount along with desc_submitcount. Otherwise when a new transaction is submitted, the irq coalesce level could be programmed to an incorrect value in the axidma case. This behavior can be observed when terminating pending transactions with xilinx_dma_terminate_all() and then submitting new transactions without releasing and requesting the channel. Signed-off-by: Nicholas Graumann <nick.graumann@gmail.com> Signed-off-by: Radhey Shyam Pandey <radhey.shyam.pandey@xilinx.com> Link: https://lore.kernel.org/r/1571150904-3988-8-git-send-email-radhey.shyam.pandey@xilinx.com Signed-off-by: Vinod Koul <vkoul@kernel.org>
2019-10-20dmaengine: xilinx_dma: Print debug message when no free tx segmentsNicholas Graumann1-0/+3
The driver should not run out of tx segments in normal operation. But, if the user attempts to prepare a transaction with a large sg list, the driver may not have enough free segments to accommodate the request. Log a message at the debug level to inform the user in case they are experiencing issues. Signed-off-by: Nicholas Graumann <nick.graumann@gmail.com> Signed-off-by: Radhey Shyam Pandey <radhey.shyam.pandey@xilinx.com> Link: https://lore.kernel.org/r/1571150904-3988-7-git-send-email-radhey.shyam.pandey@xilinx.com Signed-off-by: Vinod Koul <vkoul@kernel.org>
2019-10-20dmaengine: xilinx_dma: Add callback_result supportNicholas Graumann1-1/+25
Take advantage of dmaengine_desc_get_callback_invoke which allows either a callback or callback_result to be specified. This can be useful when using the AXI DMA transfer unknown quantities of data where the residue contained in the result can be used to calculate the number of bytes transferred. Signed-off-by: Nicholas Graumann <nick.graumann@gmail.com> Signed-off-by: Radhey Shyam Pandey <radhey.shyam.pandey@xilinx.com> Link: https://lore.kernel.org/r/1571150904-3988-6-git-send-email-radhey.shyam.pandey@xilinx.com Signed-off-by: Vinod Koul <vkoul@kernel.org>
2019-10-20dmaengine: xilinx_dma: Introduce xilinx_dma_get_residueNicholas Graumann1-17/+54
Introduce a function that can calculate residues for IPs that support it: AXI DMA and CDMA. Signed-off-by: Nicholas Graumann <nick.graumann@gmail.com> Signed-off-by: Radhey Shyam Pandey <radhey.shyam.pandey@xilinx.com> Link: https://lore.kernel.org/r/1571150904-3988-5-git-send-email-radhey.shyam.pandey@xilinx.com Signed-off-by: Vinod Koul <vkoul@kernel.org>
2019-10-20dmaengine: xilinx_dma: Remove residue from channel dataRadhey Shyam Pandey1-4/+1
There is no use of storing channel data residue field. So clean it up. In tx_status simply pass calculated residue to dma_set_residue. Signed-off-by: Radhey Shyam Pandey <radhey.shyam.pandey@xilinx.com> Link: https://lore.kernel.org/r/1571150904-3988-4-git-send-email-radhey.shyam.pandey@xilinx.com Signed-off-by: Vinod Koul <vkoul@kernel.org>
2019-10-20dmaengine: xilinx_dma: Merge get_callback and _invokeNicholas Graumann1-4/+1
The dma api provides a single interface to get the appropriate callback and invoke it directly. Prefer using it. Signed-off-by: Nicholas Graumann <nick.graumann@gmail.com> Signed-off-by: Radhey Shyam Pandey <radhey.shyam.pandey@xilinx.com> Link: https://lore.kernel.org/r/1571150904-3988-3-git-send-email-radhey.shyam.pandey@xilinx.com Signed-off-by: Vinod Koul <vkoul@kernel.org>
2019-10-20dmaengine: xilinx_dma: Remove desc_callback_valid checkRadhey Shyam Pandey1-5/+3
In descriptor cleanup the call to desc_callback_valid can be safely removed as both callback pointers i.e callback_result and callback are anyway checked in invoke(). There is no much benefit in having redundant checks. Signed-off-by: Radhey Shyam Pandey <radhey.shyam.pandey@xilinx.com> Signed-off-by: Nicholas Graumann <nick.graumann@gmail.com> Reviewed-by: Appana Durga Kedareswara rao <appana.durga.rao@xilinx.com> Link: https://lore.kernel.org/r/1571150904-3988-2-git-send-email-radhey.shyam.pandey@xilinx.com Signed-off-by: Vinod Koul <vkoul@kernel.org>
2019-10-18dmaengine: milbeaut-xdmac: Add XDMAC driver for Milbeaut platformsJassi Brar3-0/+429
Driver for Socionext Milbeaut XDMAC controller. The controller only supports Mem-To-Mem transfers over upto 8 configurable channels. Signed-off-by: Jassi Brar <jaswinder.singh@linaro.org> Link: https://lore.kernel.org/r/20191015033219.14713-1-jassisinghbrar@gmail.com Signed-off-by: Vinod Koul <vkoul@kernel.org>