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Date: Fri, 2 Oct 2015 17:49:20 +0800 From: Shawn Lin <shawn.lin@...k-chips.com> To: Jaehoon Chung <jh80.chung@...sung.com>, ulf.hansson@...aro.org Cc: shawn.lin@...k-chips.com, Vineet.Gupta1@...opsys.com, Wei Xu <xuwei5@...ilicon.com>, Joachim Eastwood <manabian@...il.com>, Alexey Brodkin <abrodkin@...opsys.com>, Kukjin Kim <kgene@...nel.org>, Krzysztof Kozlowski <k.kozlowski@...sung.com>, Russell King <linux@....linux.org.uk>, Jun Nie <jun.nie@...aro.org>, Ralf Baechle <ralf@...ux-mips.org>, Govindraj Raja <govindraj.raja@...tec.com>, Arnd Bergmann <arnd@...db.de>, heiko@...ech.de, dianders@...omium.org, linux-samsung-soc@...r.kernel.org, linux-mips@...ux-mips.org, linux-mmc@...r.kernel.org, linux-kernel@...r.kernel.org, linux-rockchip@...ts.infradead.org, devicetree@...r.kernel.org, linux-arm-kernel@...ts.infradead.org, CPGS <cpgs@...sung.com> Subject: Re: [RFC PATCH v8 0/10] Add external dma support for Synopsys MSHC On 2015/10/1 17:14, Jaehoon Chung wrote: > Dear, All. > > I will apply patch 01-03 at my repository on today. > But i don't know better how i do about other patches relevant to config file. > Thanks, Jaehoon. :) I guess it would be acceptable to pick the config changes, already they were acked by the soc maintainers, via dw_mmc tree when ulf merge dw_mmc tree into his mmc-tree. > Best Regards, > Jaehoon Chung > > On 09/16/2015 03:40 PM, Shawn Lin wrote: >> Synopsys DesignWare mobile storage host controller supports three >> types of transfer mode: pio, internal dma and external dma. However, >> dw_mmc can only supports pio and internal dma now. Thus some platforms >> using dw-mshc integrated with generic dma can't work in dma mode. So we >> submit this patch to achieve it. >> >> And the config option, CONFIG_MMC_DW_IDMAC, was added by Will Newton >> (commit:f95f3850) for the first version of dw_mmc and never be touched since >> then. At that time dt-bindings hadn't been introduced into dw_mmc yet means >> we should select CONFIG_MMC_DW_IDMAC to enable internal dma mode at compile >> time. Nowadays, device-tree helps us to support a variety of boards with one >> kernel. That's why we need to remove it and decide the transfer mode by reading >> dw_mmc's HCON reg at runtime. >> >> This RFC patch needs lots of ACKs. I know it's hard, but it does need someone >> to make the running. >> >> Patch does the following things: >> - remove CONFIG_MMC_DW_IDMAC config option >> - add bindings for edmac used by synopsys-dw-mshc >> at runtime >> - add edmac support for synopsys-dw-mshc >> >> Patch is based on next of git://git.linaro.org/people/ulf.hansson/mmc >> >> Test emmc throughput on my platform with edmac support and without edmac support(pio only) >> iozone -L64 -S32 -azecwI -+n -r4k -r64k -r128k -s1g -i0 -i1 -i2 -f datafile -Rb out.xls > /mnt/result.txt >> (light cpu loading, Direct IO, fixed line size, all pattern recycle, 1GB data in total) >> ___________________________________________________________ >> | external dma mode | >> |-----------------------------------------------------------| >> |blksz | Random Read | Random Write | Seq Read | Seq Write| >> |-----------------------------------------------------------| >> |4kB | 13953kB/s | 8602kB/s | 13672kB/s | 9785kB/s| >> |-----------------------------------------------------------| >> |64kB | 46058kB/s | 24794kB/s | 48058kB/s | 25418kB/s| >> |-----------------------------------------------------------| >> |128kB | 57026kB/s | 35117kB/s | 57375kB/s | 35183kB/s| >> |-----------------------------------------------------------| >> VS >> ___________________________________________________________ >> | pio mode | >> |-----------------------------------------------------------| >> |blksz | Random Read | Random Write | Seq Read | Seq Write| >> |-----------------------------------------------------------| >> |4kB | 11720kB/s | 8644kB/s | 11549kB/s | 9624kB/s| >> |-----------------------------------------------------------| >> |64kB | 21869kB/s | 24414kB/s | 22031kB/s | 27986kB/s| >> |-----------------------------------------------------------| >> |128kB | 23718kB/s | 34495kB/s | 24698kB/s | 34637kB/s| >> |-----------------------------------------------------------| >> >> >> Changes in v8: >> - remove trans_mode variable >> - remove unnecessary dma_ops check >> - remove unnecessary comment >> - fix coding style based on latest ulf's next >> - add Acked-by: Jaehoon Chung <jh80.chung@...sung.com> >> for HCON's changes >> >> Changes in v7: >> - rebased on Ulf's next >> - combine condition state >> - elaborate more about DMA_INTERFACE >> - define some macro for DMA_INERFACE value >> - spilt HCON ops' changes into another patch >> >> Changes in v6: >> - add trans_mode condition for IDMAC initialization >> suggested by Heiko >> - re-test my patch on rk3188 platform and update commit msg >> - update performance of pio vs edmac in cover letter >> >> Changes in v5: >> - add the title of cover letter >> - fix typo of comment >> - add macro for reading HCON register >> - add "Acked-by: Krzysztof Kozlowski <k.kozlowski@...sung.com>" for exynos_defconfig patch >> - add "Acked-by: Vineet Gupta <vgupta@...opsys.com>" for axs10x_defconfig patch >> - add "Acked-by: Govindraj Raja <govindraj.raja@...tec.com>" and >> "Acked-by: Ralf Baechle <ralf@...ux-mips.org>" for pistachio_defconfig patch >> - add "Acked-by: Joachim Eastwood <manabian@...il.com>" for lpc18xx_defconfig patch >> - add "Acked-by: Wei Xu <xuwei5@...ilicon.com>" for hisi_defconfig patch >> - rebase on "https://github.com/jh80chung/dw-mmc.git tags/dw-mmc-for-ulf-v4.2" for merging easily >> >> Changes in v4: >> - remove "host->trans_mode" and use "host->use_dma" to indicate >> transfer mode. >> - remove all bt-bindings' changes since we don't need new properities. >> - check transfer mode at runtime by reading HCON reg >> - spilt defconfig changes for each sub-architecture >> - fix the title of cover letter >> - reuse some code for reducing code size >> >> Changes in v3: >> - choose transfer mode at runtime >> - remove all CONFIG_MMC_DW_IDMAC config option >> - add supports-idmac property for some platforms >> >> Changes in v2: >> - Fix typo of dev_info msg >> - remove unused dmach from declaration of dw_mci_dma_slave >> >> Shawn Lin (10): >> mmc: dw_mmc: Add external dma interface support >> mmc: dw_mmc: use macro for HCON register operations >> Documentation: synopsys-dw-mshc: add bindings for idmac and edmac >> mips: pistachio_defconfig: remove CONFIG_MMC_DW_IDMAC >> arc: axs10x_defconfig: remove CONFIG_MMC_DW_IDMAC >> arm: exynos_defconfig: remove CONFIG_MMC_DW_IDMAC >> arm: hisi_defconfig: remove CONFIG_MMC_DW_IDMAC >> arm: lpc18xx_defconfig: remove CONFIG_MMC_DW_IDMAC >> arm: multi_v7_defconfig: remove CONFIG_MMC_DW_IDMAC >> arm: zx_defconfig: remove CONFIG_MMC_DW_IDMAC >> >> .../devicetree/bindings/mmc/synopsys-dw-mshc.txt | 25 ++ >> arch/arc/configs/axs101_defconfig | 1 - >> arch/arc/configs/axs103_defconfig | 1 - >> arch/arc/configs/axs103_smp_defconfig | 1 - >> arch/arm/configs/exynos_defconfig | 1 - >> arch/arm/configs/hisi_defconfig | 1 - >> arch/arm/configs/lpc18xx_defconfig | 1 - >> arch/arm/configs/multi_v7_defconfig | 1 - >> arch/arm/configs/zx_defconfig | 1 - >> arch/mips/configs/pistachio_defconfig | 1 - >> drivers/mmc/host/Kconfig | 11 +- >> drivers/mmc/host/dw_mmc-pltfm.c | 2 + >> drivers/mmc/host/dw_mmc.c | 272 +++++++++++++++++---- >> drivers/mmc/host/dw_mmc.h | 9 + >> include/linux/mmc/dw_mmc.h | 23 +- >> 15 files changed, 276 insertions(+), 75 deletions(-) >> > > > > -- Best Regards Shawn Lin -- 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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