From nobody Thu Dec 18 18:03:43 2025 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 A2591C197A0 for ; Mon, 20 Nov 2023 13:21:34 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S232674AbjKTNVf (ORCPT ); Mon, 20 Nov 2023 08:21:35 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:34274 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S232369AbjKTNVb (ORCPT ); Mon, 20 Nov 2023 08:21:31 -0500 Received: from mail-lj1-x22f.google.com (mail-lj1-x22f.google.com [IPv6:2a00:1450:4864:20::22f]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id D07BE139 for ; Mon, 20 Nov 2023 05:21:27 -0800 (PST) Received: by mail-lj1-x22f.google.com with SMTP id 38308e7fff4ca-2c6b30acacdso55077301fa.2 for ; Mon, 20 Nov 2023 05:21:27 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=bgdev-pl.20230601.gappssmtp.com; s=20230601; t=1700486486; x=1701091286; darn=vger.kernel.org; h=content-transfer-encoding:mime-version:references:in-reply-to :message-id:date:subject:cc:to:from:from:to:cc:subject:date :message-id:reply-to; bh=dkEfLIdUazWHVoS/f6N40pGJ+r4HD9QT8ToB//6WjKI=; b=Zyfj7ofZwS7iS1mWlAnlUqhothV7z3UOni/InFGgsOrPAHLPr7P/YdlwaFkoejAu9X 5P6fMbpBmmYU+lFxzfFZbvoDxt1jcAYSmbjEGM3YPpF2GMUQCbyDvIIut0/erxQVO9PA fL9MUYSAgRvpN3LSRvKEPNgisi46bi5DEJsO6RnF+/59aLzkFaeTarVNYrdDUbJMmRAZ nalhVqx35UEcSJPZP/lfDX9dTwfQsTqJOE+xAu9EJw6ia5O8gl0Da8L2dEvpL/tHLJgv +yZVWBJoKX2nB2f2TKTQub55f9G2r6NnXZLbOM3ivcES8H4nG+pZA3a9QgKDK0qt2ASa bC2g== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1700486486; x=1701091286; h=content-transfer-encoding:mime-version:references:in-reply-to :message-id:date:subject:cc:to:from:x-gm-message-state:from:to:cc :subject:date:message-id:reply-to; bh=dkEfLIdUazWHVoS/f6N40pGJ+r4HD9QT8ToB//6WjKI=; b=iYR7oyc8TdtQwjCUgzsxPyPMydNRrRhq/hBbq01FS9mKn0QfjT9l0tdExt6doQArn9 w4up7nBLvwfLujVVkdFoTQEI4OKc0jqj+Bg8URkRuiABHuJ/xB8uyhoxtGMgZk0HqPTH vbgB7uTIo6sGzRQ0Rs7uyaMLNR6saywbsSNnLKHivg1LxAiNO/QdICD5yl3Wqe+7tJcl NrXK/BZXG99ZSgWCS64YYin1du9PbkhPUi8goiYWdsxRlcg63RsOmq5GaisxdDdNuyDZ Nl0jYY2UQBJkQfco/Q7jIR9iHBWyOZ9BOtrU53giH6kcbdh+7Go7Wj0K0eiOJby4jrQh Yrmg== X-Gm-Message-State: AOJu0YxF6mnA/ujiit3xi2EXuJY88Afiwuw3sjv1uEReQfIweBGfGBYT rV0JJIWABEywZRBUI7JNAs204Q== X-Google-Smtp-Source: AGHT+IEBg0sWYKhteHNNiZo3z7mEwGggZ0vD5AkS67yo3o29/vLlWBE1OhJiPSA9zC2rfiAr5nuNjA== X-Received: by 2002:a2e:9008:0:b0:2c8:7176:1727 with SMTP id h8-20020a2e9008000000b002c871761727mr4806408ljg.5.1700486486135; Mon, 20 Nov 2023 05:21:26 -0800 (PST) Received: from brgl-uxlite.home ([2a01:cb1d:334:ac00:c590:a7ce:883:eba3]) by smtp.gmail.com with ESMTPSA id k18-20020a05600c0b5200b004065e235417sm17329192wmr.21.2023.11.20.05.21.25 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Mon, 20 Nov 2023 05:21:25 -0800 (PST) From: Bartosz Golaszewski To: Andy Gross , Bjorn Andersson , Konrad Dybcio , Elliot Berman , Krzysztof Kozlowski , Guru Das Srinagesh , Andrew Halaney , Maximilian Luz , Alex Elder , Srini Kandagatla Cc: linux-arm-msm@vger.kernel.org, linux-kernel@vger.kernel.org, linux-arm-kernel@lists.infradead.org, kernel@quicinc.com, Bartosz Golaszewski Subject: [RESEND PATCH v5 02/12] firmware: qcom: scm: enable the TZ mem allocator Date: Mon, 20 Nov 2023 14:21:08 +0100 Message-Id: <20231120132118.30473-3-brgl@bgdev.pl> X-Mailer: git-send-email 2.40.1 In-Reply-To: <20231120132118.30473-1-brgl@bgdev.pl> References: <20231120132118.30473-1-brgl@bgdev.pl> MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Type: text/plain; charset="utf-8" From: Bartosz Golaszewski Select the TrustZone memory allocator in Kconfig and create a pool of memory shareable with the TrustZone when probing the SCM driver. This will allow a gradual conversion of all relevant SCM calls to using the dedicated allocator. Signed-off-by: Bartosz Golaszewski Reviewed-by: Andrew Halaney Tested-by: Andrew Halaney # sc8280xp-lenovo-thinkpad-= x13s --- drivers/firmware/qcom/Kconfig | 1 + drivers/firmware/qcom/qcom_scm.c | 16 ++++++++++++++++ 2 files changed, 17 insertions(+) diff --git a/drivers/firmware/qcom/Kconfig b/drivers/firmware/qcom/Kconfig index b80269a28224..237da40de832 100644 --- a/drivers/firmware/qcom/Kconfig +++ b/drivers/firmware/qcom/Kconfig @@ -7,6 +7,7 @@ menu "Qualcomm firmware drivers" =20 config QCOM_SCM + select QCOM_TZMEM tristate =20 config QCOM_TZMEM diff --git a/drivers/firmware/qcom/qcom_scm.c b/drivers/firmware/qcom/qcom_= scm.c index 520de9b5633a..0d4c028be0c1 100644 --- a/drivers/firmware/qcom/qcom_scm.c +++ b/drivers/firmware/qcom/qcom_scm.c @@ -8,8 +8,10 @@ #include #include #include +#include #include #include +#include #include #include #include @@ -20,9 +22,11 @@ #include #include #include +#include #include =20 #include "qcom_scm.h" +#include "qcom_tzmem.h" =20 static bool download_mode =3D IS_ENABLED(CONFIG_QCOM_SCM_DOWNLOAD_MODE_DEF= AULT); module_param(download_mode, bool, 0); @@ -41,6 +45,8 @@ struct qcom_scm { int scm_vote_count; =20 u64 dload_mode_addr; + + struct qcom_tzmem_pool *mempool; }; =20 struct qcom_scm_current_perm_info { @@ -1887,6 +1893,16 @@ static int qcom_scm_probe(struct platform_device *pd= ev) if (of_property_read_bool(pdev->dev.of_node, "qcom,sdi-enabled")) qcom_scm_disable_sdi(); =20 + ret =3D qcom_tzmem_enable(__scm->dev); + if (ret) + return dev_err_probe(__scm->dev, ret, + "Failed to enable the TrustZone memory allocator\n"); + + __scm->mempool =3D devm_qcom_tzmem_pool_new(__scm->dev, SZ_256K); + if (IS_ERR(__scm->mempool)) + return dev_err_probe(__scm->dev, PTR_ERR(__scm->mempool), + "Failed to create the SCM memory pool\n"); + /* * Initialize the QSEECOM interface. * --=20 2.40.1