lists.openwall.net   lists  /  announce  owl-users  owl-dev  john-users  john-dev  passwdqc-users  yescrypt  popa3d-users  /  oss-security  kernel-hardening  musl  sabotage  tlsify  passwords  /  crypt-dev  xvendor  /  Bugtraq  Full-Disclosure  linux-kernel  linux-netdev  linux-ext4  linux-hardening  linux-cve-announce  PHC 
Open Source and information security mailing list archives
 
Hash Suite: Windows password security audit tool. GUI, reports in PDF.
[<prev] [next>] [thread-next>] [day] [month] [year] [list]
Message-Id: <20210618180907.258149-1-angelogioacchino.delregno@somainline.org>
Date:   Fri, 18 Jun 2021 20:09:04 +0200
From:   AngeloGioacchino Del Regno 
        <angelogioacchino.delregno@...ainline.org>
To:     bjorn.andersson@...aro.org
Cc:     agross@...nel.org, daniel.lezcano@...aro.org, rjw@...ysocki.net,
        linux-kernel@...r.kernel.org, linux-pm@...r.kernel.org,
        linux-arm-msm@...r.kernel.org, phone-devel@...r.kernel.org,
        konrad.dybcio@...ainline.org, marijn.suijten@...ainline.org,
        martin.botka@...ainline.org, jeffrey.l.hugo@...il.com,
        jamipkettunen@...ainline.org,
        ~postmarketos/upstreaming@...ts.sr.ht,
        AngeloGioacchino Del Regno 
        <angelogioacchino.delregno@...ainline.org>
Subject: [RESEND PATCH v4 0/3] Implement SPM/SAW for MSM8998 and SDM6xx

Changes in v4:
- Huge patch series has been split for better reviewability,
  as suggested by Bjorn

Changes in v3:
- Rebased (no changes - was in previous series' v3)

Changes in v2:
- Fixed MSM8998 SAW parameters on SPM driver

Tested on the following smartphones:
- Sony Xperia XA2        (SDM630)
- Sony Xperia XA2 Ultra  (SDM630)
- Sony Xperia 10         (SDM630)
- Sony Xperia XZ Premium (MSM8998)
- F(x)Tec Pro 1          (MSM8998)

This is a component that we can find on very old
chips, like MSM8974; there, it has been used to actually do the
power scaling basically "on its own" - sending the cores in a specific
sleep mode to save power.
On the newer ones, including MSM8998, SDM630, 660 and others, it is still
present! Though, this time, it's being used for the cluster caches and it
has a different firmware (and maybe it's also slightly different HW),
implementing the SAWv4.1 set and getting controlled *not by the OS* but
by other controllers in the SoC (like the OSM).

Contrary from MSM8974 and the like, this new version of the SPM just
requires us to set the initial parameters for AVS and *nothing else*, as
its states will be totally managed internally.

AngeloGioacchino Del Regno (3):
  cpuidle: qcom_spm: Detach state machine from main SPM handling
  soc: qcom: spm: Implement support for SAWv4.1, SDM630/660 L2 AVS
  soc: qcom: spm: Add compatible for MSM8998 SAWv4.1 L2

 drivers/cpuidle/Kconfig.arm        |   1 +
 drivers/cpuidle/cpuidle-qcom-spm.c | 294 ++++++-----------------------
 drivers/soc/qcom/Kconfig           |   9 +
 drivers/soc/qcom/Makefile          |   1 +
 drivers/soc/qcom/spm.c             | 240 +++++++++++++++++++++++
 include/soc/qcom/spm.h             |  45 +++++
 6 files changed, 354 insertions(+), 236 deletions(-)
 create mode 100644 drivers/soc/qcom/spm.c
 create mode 100644 include/soc/qcom/spm.h

-- 
2.30.0

Powered by blists - more mailing lists

Powered by Openwall GNU/*/Linux Powered by OpenVZ