From nobody Mon Apr 13 20:17:57 2026 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id 3FA29C433FE for ; Wed, 16 Nov 2022 10:17:20 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S232798AbiKPKRT (ORCPT ); Wed, 16 Nov 2022 05:17:19 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:52918 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S232877AbiKPKQ7 (ORCPT ); Wed, 16 Nov 2022 05:16:59 -0500 Received: from mail-wr1-x42e.google.com (mail-wr1-x42e.google.com [IPv6:2a00:1450:4864:20::42e]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id C2D9FBF47 for ; Wed, 16 Nov 2022 02:16:57 -0800 (PST) Received: by mail-wr1-x42e.google.com with SMTP id cl5so29093062wrb.9 for ; Wed, 16 Nov 2022 02:16:57 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linaro.org; s=google; h=cc:to:in-reply-to:references:message-id:content-transfer-encoding :mime-version:subject:date:from:from:to:cc:subject:date:message-id :reply-to; bh=Pu7n9N+0O5BDIzgboei0EVzrkBbQ6PttgZW+WxRWsp0=; b=G7Z5/x6S57rt6bfL4e5y1ndNXKgn6SQ2r47XxAXklpogTiYtUVc4LvU9HBUhUJIqGW CK/RD7IJL+hmfAug62nieUT/iNNNbFxjBjG54g3DznfPOnDpToG1tWBl4fE/I4oVSyCO 4jEnCBQaDRAweOJsgDP1ODET/dfz5n8L5XZklazjKgl8+BIae0F87+KL+D9X0+XZwIT4 QsUF30r9TEYrHr1ijeJgDRUSdBdISVqwZplQOwRi2+nivnzQ3td5bKYB3Geca08WoPET egj5FJHXUum+8qtFXc8ivx36sR65ZqtkN7iFMkqqdE/T2j7mbOW9ia4E7/WwmzHAHsN6 SVfQ== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20210112; h=cc:to:in-reply-to:references:message-id:content-transfer-encoding :mime-version:subject:date:from:x-gm-message-state:from:to:cc :subject:date:message-id:reply-to; bh=Pu7n9N+0O5BDIzgboei0EVzrkBbQ6PttgZW+WxRWsp0=; b=m32N/nZ7tHx2QvIt9pVkgq24V6myb5HMf09SXsVWBqHO75L9E7FDscgWLFnYS5D0nI rZsP5xyIi+yRvFRSLc0EBnard5qKSfudhYqpLY1hhDqqLqv+sIIPBJ6chvfQULaXW4Ym wTuTf4HywbmJfAp2x3Sr4bLcjOsm+0ZGty3RytvjpMg+l43frYH83MUipEV6T2Ps+HSK W4S7iba7JHGc53Cvk85hzdDvtYPe7kGpeHYekpboX3GJNGT3Y4yxFABUViW0P5Yovc0P kS75k4wuHRcTgEueOkBSZWklnklJ5iqJXm6m8vLYUu+bAgPk7C8vu0Ks78lWmRK2kcZ2 0EHw== X-Gm-Message-State: ANoB5pmaMYuO89NFz3kXQ3ADbAgh9JSb+myYxnBgSYpZ5Xcl6DsjGk7A TVvxlHtdCiZb2+pxm44SmlDxJg== X-Google-Smtp-Source: AA0mqf4X4UyzMTmZMBThnmCPMnmHPtKL9J94nSju8yGwDuhBd/kFgRwxYZCzqG7VteZ2tgaIvhR50A== X-Received: by 2002:a5d:43d0:0:b0:236:4e3c:7720 with SMTP id v16-20020a5d43d0000000b002364e3c7720mr13509880wrr.674.1668593816360; Wed, 16 Nov 2022 02:16:56 -0800 (PST) Received: from arrakeen.starnux.net ([2a01:e0a:982:cbb0:52eb:f6ff:feb3:451a]) by smtp.gmail.com with ESMTPSA id c4-20020a5d4f04000000b0023672104c24sm15081007wru.74.2022.11.16.02.16.55 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Wed, 16 Nov 2022 02:16:56 -0800 (PST) From: Neil Armstrong Date: Wed, 16 Nov 2022 11:16:52 +0100 Subject: [PATCH 1/2] dt-bindings: reserved-memory: document Qualcomm MPSS DSM memory MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: quoted-printable Message-Id: <20221114-narmstrong-sm8550-upstream-mpss_dsm-v1-1-158dc2bb6e96@linaro.org> References: <20221114-narmstrong-sm8550-upstream-mpss_dsm-v1-0-158dc2bb6e96@linaro.org> In-Reply-To: <20221114-narmstrong-sm8550-upstream-mpss_dsm-v1-0-158dc2bb6e96@linaro.org> To: Konrad Dybcio , Bjorn Andersson , Krzysztof Kozlowski , Rob Herring , Andy Gross , Frank Rowand Cc: linux-kernel@vger.kernel.org, linux-arm-msm@vger.kernel.org, Neil Armstrong , devicetree@vger.kernel.org X-Mailer: b4 0.10.1 Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org This documents the Qualcomm Modem Processing SubSystem DSM shared memory. Signed-off-by: Neil Armstrong --- .../reserved-memory/qcom,mpss-dsm-mem.yaml | 37 ++++++++++++++++++= ++++ 1 file changed, 37 insertions(+) diff --git a/Documentation/devicetree/bindings/reserved-memory/qcom,mpss-ds= m-mem.yaml b/Documentation/devicetree/bindings/reserved-memory/qcom,mpss-ds= m-mem.yaml new file mode 100644 index 000000000000..65f37e1356d4 --- /dev/null +++ b/Documentation/devicetree/bindings/reserved-memory/qcom,mpss-dsm-mem.y= aml @@ -0,0 +1,37 @@ +# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause) +%YAML 1.2 +--- +$id: "http://devicetree.org/schemas/reserved-memory/qcom,mpss-dsm-mem.yaml= #" +$schema: "http://devicetree.org/meta-schemas/core.yaml#" + +title: Qualcomm Modem Processing SubSystem DSM Memory + +description: | + This binding describes the Qualcomm Modem Processing SubSystem DSM, whic= h serves the + purpose of describing the shared memory region used for MPSS remote proc= essors. + +maintainers: + - Bjorn Andersson + +allOf: + - $ref: "reserved-memory.yaml" + +properties: + compatible: + const: qcom,mpss-dsm-mem + +unevaluatedProperties: false + +examples: + - | + reserved-memory { + #address-cells =3D <1>; + #size-cells =3D <1>; + ranges; + + mpss-dsm@86700000 { + compatible =3D "qcom,mpss-dsm-mem"; + reg =3D <0x86700000 0xe0000>; + no-map; + }; + }; --=20 b4 0.10.1 From nobody Mon Apr 13 20:17:57 2026 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id D2DBEC433FE for ; Wed, 16 Nov 2022 10:17:24 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S232982AbiKPKRW (ORCPT ); Wed, 16 Nov 2022 05:17:22 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:52938 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S233033AbiKPKRA (ORCPT ); Wed, 16 Nov 2022 05:17:00 -0500 Received: from mail-wm1-x329.google.com (mail-wm1-x329.google.com [IPv6:2a00:1450:4864:20::329]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id A51BE13EB8 for ; Wed, 16 Nov 2022 02:16:58 -0800 (PST) Received: by mail-wm1-x329.google.com with SMTP id v7so11555870wmn.0 for ; Wed, 16 Nov 2022 02:16:58 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linaro.org; s=google; h=cc:to:in-reply-to:references:message-id:content-transfer-encoding :mime-version:subject:date:from:from:to:cc:subject:date:message-id :reply-to; bh=Fw5QT1NVHfKKpmW7+khEKT2Vh+eUJ/stlclYXIud4p4=; b=AH4KC2hil4/jmyYmqRsMSX5cx0eNktRhCSImGrZTarg8ROS+AJJymBA3cJiCkvF+ae 4Tqwi8a+tmYCgrGaQxj6gwPXqdnT3URn+L54FPs4KIFgNWGaAByu7HcQfyxN3k+FKJGy bVhTW72QmTu6fluMBvGxfriYQJJny49DtROFfAf+GlRHi0dOUMGZtPSIQUMdYD/dgr7Q BR5o+Q6SLuR83UoSZB684bEuF47FkxYjJbOAvr6K48UDxcPFGijbgsVHaNpIdkdxr/v6 7r3fXC32gdItRwkBT/1NJTwU3tyX2yVq66TueF65YAv5jG2SQ9eUZNaGLF0Ejf2Mczwt kB1w== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20210112; h=cc:to:in-reply-to:references:message-id:content-transfer-encoding :mime-version:subject:date:from:x-gm-message-state:from:to:cc :subject:date:message-id:reply-to; bh=Fw5QT1NVHfKKpmW7+khEKT2Vh+eUJ/stlclYXIud4p4=; b=LLwUHLH8BuskrQPwtoPZjba+L3NBGYIovXVN7IEA3txhAz0va67jIrCA58sl7sKrVD TCT3bDsvqVWFkQ8F2kynI+2u8S04ZnntKkhtfJOvfiGGnapy93oZP58s6ujjE5vZJlUW PVx/EbTq5jd16sqIges0rI/yM3LCH4LS447aUsfre+RglfHAGtl6dpTQZGrQ6mljoH6q pjbibpwH4L/0ddiai9yn0JkGsAjnL56ALcLPY+SzKCVULo3ldNZ+REVnzh4uVoScJNIk 82p+7iiXfBfFSrPSU5utHfhcLLW41x+ygv5oe9UnjfHaxV68K6PD/o/QimmsOxpBDAdC PZGQ== X-Gm-Message-State: ANoB5pnXpUlevyqc5hIQYrWz3FndTDlpxU/SQe0nfVAdhGtu86BLOfle DsqRlIC7bnmokFKpnsFsJ2vSZg== X-Google-Smtp-Source: AA0mqf7CvEEYHTZX+DjpHNUnItyw0lzgLSIuFLXmUgxgw5w+UlHIQmqgEDe1/rjx0joZYYCPxP79iw== X-Received: by 2002:a05:600c:a14:b0:3c7:a5:6113 with SMTP id z20-20020a05600c0a1400b003c700a56113mr1632321wmp.129.1668593817181; Wed, 16 Nov 2022 02:16:57 -0800 (PST) Received: from arrakeen.starnux.net ([2a01:e0a:982:cbb0:52eb:f6ff:feb3:451a]) by smtp.gmail.com with ESMTPSA id c4-20020a5d4f04000000b0023672104c24sm15081007wru.74.2022.11.16.02.16.56 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Wed, 16 Nov 2022 02:16:56 -0800 (PST) From: Neil Armstrong Date: Wed, 16 Nov 2022 11:16:53 +0100 Subject: [PATCH 2/2] soc: qcom: add MDSS DSM memory driver MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: quoted-printable Message-Id: <20221114-narmstrong-sm8550-upstream-mpss_dsm-v1-2-158dc2bb6e96@linaro.org> References: <20221114-narmstrong-sm8550-upstream-mpss_dsm-v1-0-158dc2bb6e96@linaro.org> In-Reply-To: <20221114-narmstrong-sm8550-upstream-mpss_dsm-v1-0-158dc2bb6e96@linaro.org> To: Konrad Dybcio , Bjorn Andersson , Krzysztof Kozlowski , Rob Herring , Andy Gross , Frank Rowand Cc: linux-kernel@vger.kernel.org, linux-arm-msm@vger.kernel.org, Neil Armstrong , devicetree@vger.kernel.org X-Mailer: b4 0.10.1 Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org This adds a driver for the Qualcomm Modem Processing SubSystem DSM memory used to assign such regions of memory with remote MPSS processors. Signed-off-by: Neil Armstrong --- drivers/of/platform.c | 1 + drivers/soc/qcom/Kconfig | 10 +++++ drivers/soc/qcom/Makefile | 1 + drivers/soc/qcom/mpss_dsm_mem.c | 95 +++++++++++++++++++++++++++++++++++++= ++++ 4 files changed, 107 insertions(+) diff --git a/drivers/of/platform.c b/drivers/of/platform.c index 81c8c227ab6b..d5a9962641f4 100644 --- a/drivers/of/platform.c +++ b/drivers/of/platform.c @@ -504,6 +504,7 @@ EXPORT_SYMBOL_GPL(of_platform_default_populate); =20 static const struct of_device_id reserved_mem_matches[] =3D { { .compatible =3D "phram" }, + { .compatible =3D "qcom,mpss-dsm-mem" }, { .compatible =3D "qcom,rmtfs-mem" }, { .compatible =3D "qcom,cmd-db" }, { .compatible =3D "qcom,smem" }, diff --git a/drivers/soc/qcom/Kconfig b/drivers/soc/qcom/Kconfig index 024e420f1bb7..7624a8af56bf 100644 --- a/drivers/soc/qcom/Kconfig +++ b/drivers/soc/qcom/Kconfig @@ -95,6 +95,16 @@ config QCOM_QMI_HELPERS tristate depends on NET =20 +config QCOM_MPSS_DSM_MEM + tristate "Qualcomm Modem Processing SubSystem DSM memory driver" + depends on ARCH_QCOM + select QCOM_SCM + help + The Qualcomm Modem Processing SubSystem DSM memory driver is used to + assign regions of DSM memory with remote MPSS processors. + + Say y here if you intend to boot the modem remoteproc. + config QCOM_RMTFS_MEM tristate "Qualcomm Remote Filesystem memory driver" depends on ARCH_QCOM diff --git a/drivers/soc/qcom/Makefile b/drivers/soc/qcom/Makefile index d66604aff2b0..0d0e850f1a18 100644 --- a/drivers/soc/qcom/Makefile +++ b/drivers/soc/qcom/Makefile @@ -16,6 +16,7 @@ qcom_rpmh-y +=3D rpmh-rsc.o qcom_rpmh-y +=3D rpmh.o obj-$(CONFIG_QCOM_SMD_RPM) +=3D smd-rpm.o obj-$(CONFIG_QCOM_SMEM) +=3D smem.o +obj-$(CONFIG_QCOM_MPSS_DSM_MEM) +=3D mpss_dsm_mem.o obj-$(CONFIG_QCOM_SMEM_STATE) +=3D smem_state.o obj-$(CONFIG_QCOM_SMP2P) +=3D smp2p.o obj-$(CONFIG_QCOM_SMSM) +=3D smsm.o diff --git a/drivers/soc/qcom/mpss_dsm_mem.c b/drivers/soc/qcom/mpss_dsm_me= m.c new file mode 100644 index 000000000000..5584bd101aee --- /dev/null +++ b/drivers/soc/qcom/mpss_dsm_mem.c @@ -0,0 +1,95 @@ +// SPDX-License-Identifier: GPL-2.0-only +/* + * Copyright (c) 2022 Linaro Ltd. + */ + +#include +#include +#include +#include +#include +#include +#include +#include + +struct qcom_mpss_dsm_mem { + phys_addr_t addr; + phys_addr_t size; + + unsigned int perms; +}; + +static int qcom_mpss_dsm_mem_probe(struct platform_device *pdev) +{ + struct device_node *node =3D pdev->dev.of_node; + struct qcom_scm_vmperm perm; + struct reserved_mem *rmem; + struct qcom_mpss_dsm_mem *mpss_dsm_mem; + int ret; + + if (!qcom_scm_is_available()) + return -EPROBE_DEFER; + + rmem =3D of_reserved_mem_lookup(node); + if (!rmem) { + dev_err(&pdev->dev, "failed to acquire memory region\n"); + return -EINVAL; + } + + mpss_dsm_mem =3D kzalloc(sizeof(*mpss_dsm_mem), GFP_KERNEL); + if (!mpss_dsm_mem) + return -ENOMEM; + + mpss_dsm_mem->addr =3D rmem->base; + mpss_dsm_mem->size =3D rmem->size; + + perm.vmid =3D QCOM_SCM_VMID_MSS_MSA; + perm.perm =3D QCOM_SCM_PERM_RW; + + mpss_dsm_mem->perms =3D BIT(QCOM_SCM_VMID_HLOS); + ret =3D qcom_scm_assign_mem(mpss_dsm_mem->addr, mpss_dsm_mem->size, + &mpss_dsm_mem->perms, &perm, 1); + if (ret < 0) { + dev_err(&pdev->dev, "assign memory failed\n"); + return ret; + } + + dev_set_drvdata(&pdev->dev, mpss_dsm_mem); + + return 0; +} + +static int qcom_mpss_dsm_mem_remove(struct platform_device *pdev) +{ + struct qcom_mpss_dsm_mem *mpss_dsm_mem =3D dev_get_drvdata(&pdev->dev); + struct qcom_scm_vmperm perm; + + perm.vmid =3D QCOM_SCM_VMID_HLOS; + perm.perm =3D QCOM_SCM_PERM_RW; + + qcom_scm_assign_mem(mpss_dsm_mem->addr, mpss_dsm_mem->size, + &mpss_dsm_mem->perms, &perm, 1); + + return 0; +} + +static const struct of_device_id qcom_mpss_dsm_mem_of_match[] =3D { + { .compatible =3D "qcom,mpss-dsm-mem" }, + {} +}; +MODULE_DEVICE_TABLE(of, qcom_mpss_dsm_mem_of_match); + +static struct platform_driver qcom_mpss_dsm_mem_driver =3D { + .probe =3D qcom_mpss_dsm_mem_probe, + .remove =3D qcom_mpss_dsm_mem_remove, + .driver =3D { + .name =3D "qcom_mpss_dsm_mem", + .of_match_table =3D qcom_mpss_dsm_mem_of_match, + }, +}; + +module_platform_driver(qcom_mpss_dsm_mem_driver); + +MODULE_AUTHOR("Linaro Ltd"); +MODULE_DESCRIPTION("Qualcomm DSM memory driver"); +MODULE_LICENSE("GPL"); --=20 b4 0.10.1