linux-kernel - [RFC V6 0/2] firmware: arm

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: <20250226024338.3994701-1-quic_sibis@quicinc.com>
Date: Wed, 26 Feb 2025 08:13:36 +0530
From: Sibi Sankar <quic_sibis@...cinc.com>
To: <sudeep.holla@....com>, <cristian.marussi@....com>, <johan@...nel.org>,
        <dmitry.baryshkov@...aro.org>, <maz@...nel.org>
CC: <linux-kernel@...r.kernel.org>, <arm-scmi@...r.kernel.org>,
        <linux-arm-kernel@...ts.infradead.org>,
        <linux-arm-msm@...r.kernel.org>, <quic_sibis@...cinc.com>,
        <konradybcio@...nel.org>
Subject: [RFC V6 0/2] firmware: arm_scmi: Misc Fixes

The series addresses the kernel warnings reported by Johan at [1] and are
are required to X1E cpufreq device tree changes to land. It also proposes
addition of quirks to bypass a fw bug on X1E devices.

[1] - https://lore.kernel.org/lkml/ZoQjAWse2YxwyRJv@hovoldconsulting.com/

Duplicate levels:
arm-scmi arm-scmi.0.auto: Level 2976000 Power 218062 Latency 30us Ifreq 2976000 Index 10
arm-scmi arm-scmi.0.auto: Level 3206400 Power 264356 Latency 30us Ifreq 3206400 Index 11
arm-scmi arm-scmi.0.auto: Level 3417600 Power 314966 Latency 30us Ifreq 3417600 Index 12
arm-scmi arm-scmi.0.auto: Failed to add opps_by_lvl at 3417600 for NCC - ret:-16
arm-scmi arm-scmi.0.auto: Failed to add opps_by_lvl at 3417600 for NCC - ret:-16
arm-scmi arm-scmi.0.auto: Level 4012800 Power 528848 Latency 30us Ifreq 4012800 Index 15

^^ exist because SCP reports duplicate values for the highest sustainable
freq for perf domains 1 and 2. These are the only freqs that appear as
duplicates and will be fixed with a firmware update. FWIW the warnings
that we are addressing in this series will also get fixed by a firmware
update but they still have to land for devices already out in the wild.

V5:
* Drop all the patches that have already landed upstream and mark the
  series as RFC to get feedback on adding quirk support for the perf
  protocol.

V4:
* Rework debugfs node creation patch [Ulf/Dmitry]
* Reduce report level to dev_info and tag it with FW_BUG [Johan/Dmitry]
* Add cc stable and err logs to patch 1 commit message [Johan]

V3:
* Pick up R-b, T-b from the list.
* Pick up the updated patch from Cristian for skipping opps.
* Update device names only when a name collision occurs [Dmitry/Ulf]
* Drop Johan's T-b from "fix debugfs node creation failure"
* Move scmi_protocol_msg_check to the top [Sudeep]

V2:
* Include the fix for do_xfer timeout
* Include the fix debugfs node creation failure
* Include Cristian's fix for skipping opp duplication

V1:
* add missing MSG_SUPPORTS_FASTCHANNEL definition.

base: next-20250225

Sibi Sankar (2):
  firmware: arm_scmi: Ensure that the message-id supports fastchannel
  firmware: arm_scmi: Add quirk to bypass SCP fw bug

 drivers/firmware/arm_scmi/driver.c    | 75 +++++++++++++++------------
 drivers/firmware/arm_scmi/perf.c      | 30 ++++++++---
 drivers/firmware/arm_scmi/powercap.c  |  8 +--
 drivers/firmware/arm_scmi/protocols.h |  4 +-
 4 files changed, 72 insertions(+), 45 deletions(-)

-- 
2.34.1