From patchwork Fri Oct 13 11:48:40 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Bartosz Golaszewski X-Patchwork-Id: 13420773 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 9A226CDB482 for ; Fri, 13 Oct 2023 11:49:38 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S231641AbjJMLth (ORCPT ); Fri, 13 Oct 2023 07:49:37 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:40608 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S231590AbjJMLtT (ORCPT ); Fri, 13 Oct 2023 07:49:19 -0400 Received: from mail-wm1-x334.google.com (mail-wm1-x334.google.com [IPv6:2a00:1450:4864:20::334]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 2F861106 for ; Fri, 13 Oct 2023 04:49:07 -0700 (PDT) Received: by mail-wm1-x334.google.com with SMTP id 5b1f17b1804b1-40535597f01so20534705e9.3 for ; Fri, 13 Oct 2023 04:49:07 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=bgdev-pl.20230601.gappssmtp.com; s=20230601; t=1697197745; x=1697802545; 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=AGMo0XfPtT2eoS0TClJYKLLiBxw0PNFjU9Xb0WM0Oqk=; b=qNm9zAkbBPZhVbbY+7nTBnQcoLTa/cwAGiZxGsgQ2hkTfSNyEJHTUbupX4doSrNq1w yNycH5tKvQt6iAB3eGSSPWhNJJsF8RGwLm2D6aIR5ZAeYG3VYELuesz6+JAjQJqXMTvj u5wtmBVgC5grAsG5/ux4A2A0G63IKDgbc1S2vGezMoG54khejdL7bv65hXNtFRObWCfB niuLekQM+7hEoxeXw7CmAFiSE+9/D/MxUvq7nonRn4Yv251zvJWRCo7TUXB7LrIihveH 3x7iRXL+/c9Y+IozENScRa8jcVqi6TBEJws6XLXV6Fw3dCT8/ruyV9IKizMxRWv/j289 B3Xw== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1697197745; x=1697802545; 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=AGMo0XfPtT2eoS0TClJYKLLiBxw0PNFjU9Xb0WM0Oqk=; b=W2g2n8G6QBExo3I7f3S5C7X7mjkY5LETpicrFPtKy3E74+BEo/yzUXKMtx51tr+r92 hqD1nZLG4r9BTqldYq6AkDNdKvVZomHcPgbOa4nTJxTSyAtgD1AtNSO/LY4MGnfZ44DK cTm9ceAE34U2CutxiYTFPrSBaarecdgH9r3L+8nQ5MG4Kn1ahya+dClfJ1ZAj7XAe4dq JzpZOwFQe0fUO/Dp54F+vMBqeanYDiGywhpCkkf4woz66dPj1eGvfDdsHy1cIptHViW2 AJ3r0NLwRXqpcS6UcS3xlL3GvAgL2pMSdnUff4Q4nWJNY+eTawFJiJ93K1f93uE6xcul vJYg== X-Gm-Message-State: AOJu0Yxbpb2lMnA+X5ZwqaSrYUpURQynMyhFfJagcBT2b/AhE3qVJI4T rkqiKP5fneTmYxDj+ONn/rql5A== X-Google-Smtp-Source: AGHT+IHL+JnqG9VRTnC2qee6NXKNNw4sjMUhEXf9wZ+4bLiyAwulp1PRme4XW3GsjZXweellxZf2mg== X-Received: by 2002:a05:600c:2146:b0:401:daf2:2735 with SMTP id v6-20020a05600c214600b00401daf22735mr22506011wml.31.1697197745234; Fri, 13 Oct 2023 04:49:05 -0700 (PDT) Received: from brgl-uxlite.home ([2a01:cb1d:334:ac00:4209:13a:988d:80be]) by smtp.gmail.com with ESMTPSA id j23-20020a05600c1c1700b00407754b998dsm974509wms.27.2023.10.13.04.49.04 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Fri, 13 Oct 2023 04:49:04 -0700 (PDT) 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: [PATCH v4 12/15] firmware: qcom: scm: add support for SHM bridge operations Date: Fri, 13 Oct 2023 13:48:40 +0200 Message-Id: <20231013114843.63205-13-brgl@bgdev.pl> X-Mailer: git-send-email 2.39.2 In-Reply-To: <20231013114843.63205-1-brgl@bgdev.pl> References: <20231013114843.63205-1-brgl@bgdev.pl> MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: linux-arm-msm@vger.kernel.org From: Bartosz Golaszewski Add low-level primitives for enabling SHM bridge support as well as creating and destroying SHM bridge pools to qcom-scm. Signed-off-by: Bartosz Golaszewski Acked-by: Andrew Halaney --- drivers/firmware/qcom/qcom_scm.c | 60 ++++++++++++++++++++++++++ drivers/firmware/qcom/qcom_scm.h | 3 ++ include/linux/firmware/qcom/qcom_scm.h | 6 +++ 3 files changed, 69 insertions(+) diff --git a/drivers/firmware/qcom/qcom_scm.c b/drivers/firmware/qcom/qcom_scm.c index 318d7d398e5f..839773270a21 100644 --- a/drivers/firmware/qcom/qcom_scm.c +++ b/drivers/firmware/qcom/qcom_scm.c @@ -1323,6 +1323,66 @@ bool qcom_scm_lmh_dcvsh_available(void) } EXPORT_SYMBOL_GPL(qcom_scm_lmh_dcvsh_available); +int qcom_scm_shm_bridge_enable(void) +{ + struct qcom_scm_desc desc = { + .svc = QCOM_SCM_SVC_MP, + .cmd = QCOM_SCM_MP_SHM_BRIDGE_ENABLE, + .owner = ARM_SMCCC_OWNER_SIP + }; + + struct qcom_scm_res res; + + if (!__qcom_scm_is_call_available(__scm->dev, QCOM_SCM_SVC_MP, + QCOM_SCM_MP_SHM_BRIDGE_ENABLE)) + return -EOPNOTSUPP; + + return qcom_scm_call(__scm->dev, &desc, &res) ?: res.result[0]; +} +EXPORT_SYMBOL_GPL(qcom_scm_shm_bridge_enable); + +int qcom_scm_shm_bridge_create(struct device *dev, u64 pfn_and_ns_perm_flags, + u64 ipfn_and_s_perm_flags, u64 size_and_flags, + u64 ns_vmids, u64 *handle) +{ + struct qcom_scm_desc desc = { + .svc = QCOM_SCM_SVC_MP, + .cmd = QCOM_SCM_MP_SHM_BRIDGE_CREATE, + .owner = ARM_SMCCC_OWNER_SIP, + .args[0] = pfn_and_ns_perm_flags, + .args[1] = ipfn_and_s_perm_flags, + .args[2] = size_and_flags, + .args[3] = ns_vmids, + .arginfo = QCOM_SCM_ARGS(4, QCOM_SCM_VAL, QCOM_SCM_VAL, + QCOM_SCM_VAL, QCOM_SCM_VAL), + }; + + struct qcom_scm_res res; + int ret; + + ret = qcom_scm_call(__scm->dev, &desc, &res); + + if (handle && !ret) + *handle = res.result[1]; + + return ret ?: res.result[0]; +} +EXPORT_SYMBOL_GPL(qcom_scm_shm_bridge_create); + +int qcom_scm_shm_bridge_delete(struct device *dev, u64 handle) +{ + struct qcom_scm_desc desc = { + .svc = QCOM_SCM_SVC_MP, + .cmd = QCOM_SCM_MP_SHM_BRIDGE_DELETE, + .owner = ARM_SMCCC_OWNER_SIP, + .args[0] = handle, + .arginfo = QCOM_SCM_ARGS(1, QCOM_SCM_VAL), + }; + + return qcom_scm_call(__scm->dev, &desc, NULL); +} +EXPORT_SYMBOL_GPL(qcom_scm_shm_bridge_delete); + int qcom_scm_lmh_profile_change(u32 profile_id) { struct qcom_scm_desc desc = { diff --git a/drivers/firmware/qcom/qcom_scm.h b/drivers/firmware/qcom/qcom_scm.h index aa7d06939f8e..cb7273aa0a5e 100644 --- a/drivers/firmware/qcom/qcom_scm.h +++ b/drivers/firmware/qcom/qcom_scm.h @@ -116,6 +116,9 @@ struct qcom_tzmem_pool *qcom_scm_get_tzmem_pool(void); #define QCOM_SCM_MP_IOMMU_SET_CP_POOL_SIZE 0x05 #define QCOM_SCM_MP_VIDEO_VAR 0x08 #define QCOM_SCM_MP_ASSIGN 0x16 +#define QCOM_SCM_MP_SHM_BRIDGE_ENABLE 0x1c +#define QCOM_SCM_MP_SHM_BRIDGE_DELETE 0x1d +#define QCOM_SCM_MP_SHM_BRIDGE_CREATE 0x1e #define QCOM_SCM_SVC_OCMEM 0x0f #define QCOM_SCM_OCMEM_LOCK_CMD 0x01 diff --git a/include/linux/firmware/qcom/qcom_scm.h b/include/linux/firmware/qcom/qcom_scm.h index ccaf28846054..9b6054813f59 100644 --- a/include/linux/firmware/qcom/qcom_scm.h +++ b/include/linux/firmware/qcom/qcom_scm.h @@ -115,6 +115,12 @@ int qcom_scm_lmh_dcvsh(u32 payload_fn, u32 payload_reg, u32 payload_val, int qcom_scm_lmh_profile_change(u32 profile_id); bool qcom_scm_lmh_dcvsh_available(void); +int qcom_scm_shm_bridge_enable(void); +int qcom_scm_shm_bridge_create(struct device *dev, u64 pfn_and_ns_perm_flags, + u64 ipfn_and_s_perm_flags, u64 size_and_flags, + u64 ns_vmids, u64 *handle); +int qcom_scm_shm_bridge_delete(struct device *dev, u64 handle); + #ifdef CONFIG_QCOM_QSEECOM int qcom_scm_qseecom_app_get_id(const char *app_name, u32 *app_id);