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Date: Wed, 21 Mar 2012 19:13:54 +0530 From: Vinod Koul <vinod.koul@...ux.intel.com> To: Alexandre Bounine <alexandre.bounine@....com> Cc: dan.j.williams@...el.com, linux@....linux.org.uk, linux-kernel@...r.kernel.org, jaswinder.singh@...aro.org, linus.walleij@...ricsson.com, leoli@...escale.com, zw@...kernel.org, STEricsson_nomadik_linux@...t.st.com, ben-linux@...ff.org, kgene.kim@...sung.com, mchehab@...radead.org, ludovic.desroches@...el.com, cjb@...top.org, g.liakhovetski@....de, ian@...menth.co.uk, dwmw2@...radead.org, grant.likely@...retlab.ca, alan@...ux.intel.com, balbi@...com, FlorianSchandinat@....de, perex@...ex.cz, tiwai@...e.de, viresh.kumar@...com, baohua.song@....com, srinidhi.kasagar@...ricsson.com Subject: Re: [PATCH 0/2 V2] dmaengine: add context parameter to prep_slave_sg and prep_dma_cyclic On Thu, 2012-03-08 at 15:35 -0500, Alexandre Bounine wrote: Can you rebase this series with Acks collected so that I can merge. The sequence fails to apply on current next, and SHA1 information in not enough for me to perform a merge :( > As we agreed during our discussion about adding DMA Engine support for RapidIO > subsystem [1], RapidIO and similar clients may benefit from adding an extra > context parameter to device_prep_slave_sg() and device_prep_dma_cyclic() interfaces. > > Adding the context parameter will allow to pass client/target specific > information associated with an individual data transfer request. > > In the case of RapidIO support this additional information consists of target > destination ID and its buffer address (which is not mapped into the local CPU > memory space). Because a single RapidIO-capable DMA channel may queue data > transfer requests to different target devices, the per-request configuration > is required. > > This set of patches presents changes to DMA_SLAVE and DMA_CYCLIC interfaces [2] > and corresponding changes to all affected current drivers/clients. > > V.2 of the patches is reworked to implement wrappers and use staged approach > as proposed by Russell King [3]. > > DMA Engine support for RapidIO and device-specific driver for Tsi721 PCIe-to-SRIO > bridge will follow as a separate set of patches. > > [1] https://lkml.org/lkml/2011/10/24/275 > [2] https://lkml.org/lkml/2012/1/30/624 > [3] https://lkml.org/lkml/2012/2/3/269 > > Alexandre Bounine (2): > dmaengine/dma_slave: introduce inline wrappers > dmaengine: add context parameter to prep_slave_sg and prep_dma_cyclic > > arch/arm/plat-nomadik/include/plat/ste_dma40.h | 3 +- > arch/arm/plat-samsung/dma-ops.c | 4 +- > drivers/dma/amba-pl08x.c | 2 +- > drivers/dma/at_hdmac.c | 7 ++++- > drivers/dma/coh901318.c | 2 +- > drivers/dma/dw_dmac.c | 2 +- > drivers/dma/ep93xx_dma.c | 6 +++- > drivers/dma/fsldma.c | 4 ++- > drivers/dma/imx-dma.c | 5 ++- > drivers/dma/imx-sdma.c | 5 ++- > drivers/dma/intel_mid_dma.c | 3 +- > drivers/dma/ipu/ipu_idmac.c | 3 +- > drivers/dma/mxs-dma.c | 5 ++- > drivers/dma/pch_dma.c | 3 +- > drivers/dma/pl330.c | 5 ++- > drivers/dma/shdma.c | 3 +- > drivers/dma/sirf-dma.c | 2 +- > drivers/dma/ste_dma40.c | 5 ++- > drivers/dma/timb_dma.c | 3 +- > drivers/dma/txx9dmac.c | 2 +- > drivers/media/video/mx3_camera.c | 2 +- > drivers/media/video/timblogiw.c | 2 +- > drivers/mmc/host/atmel-mci.c | 2 +- > drivers/mmc/host/mmci.c | 2 +- > drivers/mmc/host/mxcmmc.c | 2 +- > drivers/mmc/host/mxs-mmc.c | 2 +- > drivers/mmc/host/sh_mmcif.c | 4 +- > drivers/mmc/host/tmio_mmc_dma.c | 4 +- > drivers/mtd/nand/gpmi-nand/gpmi-lib.c | 25 ++++++++++------------- > drivers/net/ethernet/micrel/ks8842.c | 4 +- > drivers/spi/spi-dw-mid.c | 4 +- > drivers/spi/spi-ep93xx.c | 4 +- > drivers/spi/spi-pl022.c | 4 +- > drivers/spi/spi-topcliff-pch.c | 4 +- > drivers/tty/serial/amba-pl011.c | 6 +--- > drivers/tty/serial/pch_uart.c | 4 +- > drivers/tty/serial/sh-sci.c | 4 +- > drivers/usb/musb/ux500_dma.c | 3 +- > drivers/usb/renesas_usbhs/fifo.c | 5 +-- > drivers/video/mx3fb.c | 4 +- > include/linux/dmaengine.h | 24 ++++++++++++++++++++-- > sound/soc/ep93xx/ep93xx-pcm.c | 3 +- > sound/soc/imx/imx-pcm-dma-mx2.c | 2 +- > sound/soc/mxs/mxs-pcm.c | 2 +- > sound/soc/sh/siu_pcm.c | 4 +- > sound/soc/txx9/txx9aclc.c | 2 +- > 46 files changed, 114 insertions(+), 88 deletions(-) > -- ~Vinod -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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