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Fri, 15 Nov 2024 01:15:33 GMT Received: from hu-sibis-blr.qualcomm.com (10.80.80.8) by nalasex01a.na.qualcomm.com (10.47.209.196) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.2.1544.9; Thu, 14 Nov 2024 17:15:29 -0800 From: Sibi Sankar To: , , , CC: , , , , , , Subject: [PATCH V5 0/2] arm_scmi: vendors: Qualcomm Generic Vendor Extensions Date: Fri, 15 Nov 2024 06:45:13 +0530 Message-ID: <20241115011515.1313447-1-quic_sibis@quicinc.com> X-Mailer: git-send-email 2.34.1 MIME-Version: 1.0 X-Originating-IP: [10.80.80.8] X-ClientProxiedBy: nasanex01b.na.qualcomm.com (10.46.141.250) To nalasex01a.na.qualcomm.com (10.47.209.196) X-QCInternal: smtphost X-Proofpoint-Virus-Version: vendor=nai engine=6200 definitions=5800 signatures=585085 X-Proofpoint-ORIG-GUID: zjtL2fq0-uBsnsOb6Yi41aMzSpjcu7mt X-Proofpoint-GUID: zjtL2fq0-uBsnsOb6Yi41aMzSpjcu7mt X-Proofpoint-Virus-Version: vendor=baseguard engine=ICAP:2.0.293,Aquarius:18.0.1039,Hydra:6.0.680,FMLib:17.12.60.29 definitions=2024-09-06_09,2024-09-06_01,2024-09-02_01 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 spamscore=0 lowpriorityscore=0 impostorscore=0 adultscore=0 bulkscore=0 clxscore=1015 mlxlogscore=959 priorityscore=1501 phishscore=0 malwarescore=0 suspectscore=0 mlxscore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.19.0-2409260000 definitions=main-2411150009 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20241114_171542_060682_76402F03 X-CRM114-Status: GOOD ( 17.78 ) X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org The QCOM SCMI vendor protocol provides a generic way of exposing a number of Qualcomm SoC specific features (like memory bus scaling) through a mixture of pre-determined algorithm strings and param_id pairs hosted on the SCMI controller. Introduce a client driver that uses the memlat algorithm string hosted on QCOM SCMI Vendor Protocol to detect memory latency workloads and control frequency/level of the various memory buses (DDR/LLCC/DDR_QOS). QCOM SCMI Generic Vendor protocol background: It was found that a lot of the vendor protocol used internally was for debug/internal development purposes that would either be super SoC specific or had to be disabled because of some features being fused out during production. This lead to a large number of vendor protocol numbers being quickly consumed and were never released either. Using a generic vendor protocol with functionality abstracted behind algorithm strings gave us the flexibility of allowing such functionality exist during initial development/debugging while still being able to expose functionality like memlat once they have matured enough. The param-ids are certainly expected to act as ABI for algorithms strings like MEMLAT. Thanks in advance for taking time to review the series. V4: * Splitting the series into vendor protocol and memlat client. Also the move the memlat client implementation back to RFC due to multiple opens. * Use common xfer helper to avoid code duplication [Dmitry] * Update enum documentation without duplicate enum info [Dmitry] * Update the protol attributes doc with more information. [Cristian] V3: * Restructure the bindings to mimic IMX [Christian] * Add documentation for the qcom generic vendor protocol [Christian/Sudeep] * Pick up Rb tag and fixup/re-order elements of the vendor ops [Christian] * Follow naming convention and folder structure used by IMX * Add missing enum in the vendor protocol and fix documentation [Konrad] * Add missing enum in the scmi memlat driver and fix documentation [Konrad] * Add checks for max memory and monitor [Shivnandan] * Fix typo from START_TIMER -> STOP_TIMER [Shivnandan] * Make populate_physical_mask func to void [Shivnandan] * Remove unecessary zero set [Shivnandan] * Use __free(device node) in init_cpufreq-memfreqmap [Christian/Konrad] * Use sdev->dev.of_node directly [Christian] * use return dev_err_probe in multiple places [Christian] V2: * Drop container dvfs memlat container node. [Rob] * Move scmi-memlat.yaml to protocol level given that a lot of vendors might end up * using the same protocol number. [Rob] * Replace qcom,cpulist with the standard "cpus" property. [Rob] * Fix up compute-type/ipm-ceil required. [Rob] * Make driver changes to the accommodate bindings changes. [Rob] * Minor fixups in subjects/coverletter. * Minor style fixes in dts. V1: * Add missing bindings for the protocol. [Konrad/Dmitry] * Use alternate bindings. [Dmitry/Konrad] * Rebase on top of Cristian's "SCMI multiple vendor protocol support" series. [Cristian] * Add more documentation wherever possible. [Sudeep] * Replace pr_err/info with it's dev equivalents. * Mixed tabs and initialization cleanups in the memlat driver. [Konrad] * Commit message update for the memlat driver. [Dmitry] * Cleanups/Fixes suggested for the client driver. [Dmitry/Konrad/Cristian] * Use opp-tables instead of memfreq-tbl. [Dmitry/Konrad] * Detect physical cpu to deal with variants with reduced cpu count. * Add support for DDR_QOS mem_type. Sibi Sankar (2): firmware: arm_scmi: Add QCOM Generic Vendor Protocol documentation firmware: arm_scmi: vendors: Add QCOM SCMI Generic Extensions drivers/firmware/arm_scmi/Kconfig | 1 + drivers/firmware/arm_scmi/Makefile | 1 + .../firmware/arm_scmi/vendors/qcom/Kconfig | 15 ++ .../firmware/arm_scmi/vendors/qcom/Makefile | 2 + .../arm_scmi/vendors/qcom/qcom-generic-ext.c | 139 ++++++++++++ .../arm_scmi/vendors/qcom/qcom_generic.rst | 211 ++++++++++++++++++ include/linux/scmi_qcom_protocol.h | 37 +++ 7 files changed, 406 insertions(+) create mode 100644 drivers/firmware/arm_scmi/vendors/qcom/Kconfig create mode 100644 drivers/firmware/arm_scmi/vendors/qcom/Makefile create mode 100644 drivers/firmware/arm_scmi/vendors/qcom/qcom-generic-ext.c create mode 100644 drivers/firmware/arm_scmi/vendors/qcom/qcom_generic.rst create mode 100644 include/linux/scmi_qcom_protocol.h