Messages in this thread | | | 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 |
| |
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.
| |