From mboxrd@z Thu Jan 1 00:00:00 1970 From: Ritesh Harjani Subject: [RFC 0/4] mmc: sdhci-msm: Add CQE support for sdhci-msm Date: Wed, 30 Aug 2017 18:34:07 +0530 Message-ID: <1504098251-27739-1-git-send-email-riteshh@codeaurora.org> Return-path: Sender: linux-kernel-owner@vger.kernel.org To: ulf.hansson@linaro.org, adrian.hunter@intel.com Cc: linux-mmc@vger.kernel.org, linux-kernel@vger.kernel.org, stummala@codeaurora.org, asutoshd@codeaurora.org, Ritesh Harjani List-Id: linux-mmc@vger.kernel.org Hi All, Please ignore the previous patch series from a wrong email address. Stupid gitconfig issue. Apologies for the spam. This is RFC patch series based on top of ulfh_mmc/cmdq branch which is based upon Adrian's CMDQ patch series. Below patch series enables CQE for sdhci-msm platform. This has been tested on internal 8996 MTP which has CMDQ support. Fixes w.r.t. CMDQ:- There are some patches identified which were required atleast on MSM platform. I am not sure if these are required for any other CQE platform or not. Patchset 1, 3 & 4 commit text describes the problems. Performance related:- I gave one small shot for performance and the numbers were not looking good. So, unless I have tested for performance completely, I should not discuss on performance numbers as of now with this patchset. I can try doing some more performance testing and post the results - though this may take some while. I used below test script for random read/write test. *randwrite-test-script* [global] bs=32k size=1g rw=randwrite direct=1 directory=/data/fiotest [file1] filename=singlefile1 *randread-test-script* [global] bs=32k size=1g rw=randread directory=/data/fiotest [file1] filename=singlefile1 @Adrian, Thanks a lot for pursuing and bringing CMDQ patch series to it's final stages :) Ritesh Harjani (4): mmc: cqhci: Move CQHCI_ENABLE before setting TDLBA/TDLBAU mmc: sdhci-msm: Add CQHCI support for sdhci-msm mmc: sdhci-msm: Change the desc_sz on cqe_enable/disable. mmc: sdhci-msm: Handle unexpected interrupt case on enabling legacy IRQs on CQE halt .../devicetree/bindings/mmc/sdhci-msm.txt | 1 + drivers/mmc/host/Kconfig | 1 + drivers/mmc/host/cqhci.c | 7 +- drivers/mmc/host/sdhci-msm.c | 121 ++++++++++++++++++++- 4 files changed, 125 insertions(+), 5 deletions(-) -- Qualcomm India Private Limited, on behalf of Qualcomm Innovation Center, Inc. Qualcomm Innovation Center, Inc. is a member of Code Aurora Forum, a Linux Foundation Collaborative Project.