[RFC 0/4] mmc: sdhci-msm: Add CQE support for sdhci-msm

From	Ritesh Harjani <riteshh@codeaurora.org>
Newsgroups	linux.kernel
Subject	[RFC 0/4] mmc: sdhci-msm: Add CQE support for sdhci-msm
Date	2017-08-30 15:10 +0200
Message-ID	<ukaUN-i2-1@gated-at.bofh.it> (permalink)
Organization	linux.* mail to news gateway

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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.

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[RFC 0/4] mmc: sdhci-msm: Add CQE support for sdhci-msm Ritesh Harjani <riteshh@codeaurora.org> - 2017-08-30 15:10 +0200
  [RFC 2/4] mmc: sdhci-msm: Add CQHCI support for sdhci-msm Ritesh Harjani <riteshh@codeaurora.org> - 2017-08-30 15:10 +0200
    Re: [RFC 2/4] mmc: sdhci-msm: Add CQHCI support for sdhci-msm Adrian Hunter <adrian.hunter@intel.com> - 2017-08-31 09:40 +0200
      Re: [RFC 2/4] mmc: sdhci-msm: Add CQHCI support for sdhci-msm Ritesh Harjani <riteshh@codeaurora.org> - 2017-09-02 07:20 +0200
  [RFC 3/4] mmc: sdhci-msm: Change the desc_sz on cqe_enable/disable. Ritesh Harjani <riteshh@codeaurora.org> - 2017-08-30 15:10 +0200
    Re: [RFC 3/4] mmc: sdhci-msm: Change the desc_sz on  cqe_enable/disable. Adrian Hunter <adrian.hunter@intel.com> - 2017-08-31 08:50 +0200
      Re: [RFC 3/4] mmc: sdhci-msm: Change the desc_sz on  cqe_enable/disable. Ritesh Harjani <riteshh@codeaurora.org> - 2017-09-02 07:20 +0200
  [RFC 1/4] mmc: cqhci: Move CQHCI_ENABLE before setting TDLBA/TDLBAU Ritesh Harjani <riteshh@codeaurora.org> - 2017-08-30 15:10 +0200
    Re: [RFC 1/4] mmc: cqhci: Move CQHCI_ENABLE before setting  TDLBA/TDLBAU Adrian Hunter <adrian.hunter@intel.com> - 2017-08-31 08:20 +0200
      Re: [RFC 1/4] mmc: cqhci: Move CQHCI_ENABLE before setting  TDLBA/TDLBAU Ritesh Harjani <riteshh@codeaurora.org> - 2017-09-02 07:10 +0200
  [RFC 4/4] mmc: sdhci-msm: Handle unexpected interrupt case on enabling legacy IRQs on CQE halt Ritesh Harjani <riteshh@codeaurora.org> - 2017-08-30 15:10 +0200
    Re: [RFC 4/4] mmc: sdhci-msm: Handle unexpected interrupt case on  enabling legacy IRQs on CQE halt Adrian Hunter <adrian.hunter@intel.com> - 2017-08-31 09:50 +0200
      Re: [RFC 4/4] mmc: sdhci-msm: Handle unexpected interrupt case on  enabling legacy IRQs on CQE halt Ritesh Harjani <riteshh@codeaurora.org> - 2017-09-02 07:20 +0200
  Re: [RFC 0/4] mmc: sdhci-msm: Add CQE support for sdhci-msm Adrian Hunter <adrian.hunter@intel.com> - 2017-08-31 10:50 +0200
    Re: [RFC 0/4] mmc: sdhci-msm: Add CQE support for sdhci-msm Ritesh Harjani <riteshh@codeaurora.org> - 2017-09-02 07:20 +0200

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